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The Independent JPEG Group's JPEG software v6

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Thomas G. Lane 1995-08-02 00:00:00 +00:00 committed by DRC
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139
README
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@ -1,10 +1,10 @@
The Independent JPEG Group's JPEG software
==========================================
README for release 5b of 15-Mar-95
==================================
README for release 6 of 2-Aug-95
================================
This distribution contains the fifth public release of the Independent JPEG
This distribution contains the sixth public release of the Independent JPEG
Group's free JPEG software. You are welcome to redistribute this software and
to use it for any purpose, subject to the conditions under LEGAL ISSUES, below.
@ -14,10 +14,10 @@ our electronic mailing list. Mailing list members are notified of updates
and have a chance to participate in technical discussions, etc.
This software is the work of Tom Lane, Philip Gladstone, Luis Ortiz, Jim
Boucher, Lee Crocker, George Phillips, Davide Rossi, Ge' Weijers, and other
members of the Independent JPEG Group.
Boucher, Lee Crocker, Julian Minguillon, George Phillips, Davide Rossi,
Ge' Weijers, and other members of the Independent JPEG Group.
IJG is not associated with the official ISO JPEG standards committee.
IJG is not affiliated with the official ISO JPEG standards committee.
DOCUMENTATION ROADMAP
@ -37,8 +37,10 @@ Other documentation files in the distribution are:
User documentation:
install.doc How to configure and install the IJG software.
usage.doc Usage instructions for cjpeg, djpeg, rdjpgcom, wrjpgcom.
usage.doc Usage instructions for cjpeg, djpeg, jpegtran,
rdjpgcom, and wrjpgcom.
*.1 Unix-style man pages for programs (same info as usage.doc).
wizard.doc Advanced usage instructions for JPEG wizards only.
change.log Version-to-version change highlights.
Programmer and internal documentation:
libjpeg.doc How to use the JPEG library in your own programs.
@ -62,43 +64,43 @@ OVERVIEW
This package contains C software to implement JPEG image compression and
decompression. JPEG (pronounced "jay-peg") is a standardized compression
method for full-color and gray-scale images. JPEG is intended for compressing
"real-world" scenes; cartoons and other non-realistic images are not its
strong suit. JPEG is lossy, meaning that the output image is not necessarily
identical to the input image. Hence you must not use JPEG if you have to have
identical output bits. However, on typical images of real-world scenes, very
good compression levels can be obtained with no visible change, and amazingly
high compression levels are possible if you can tolerate a low-quality image.
For more details, see the references, or just experiment with various
compression settings.
"real-world" scenes; line drawings, cartoons and other non-realistic images
are not its strong suit. JPEG is lossy, meaning that the output image is not
exactly identical to the input image. Hence you must not use JPEG if you
have to have identical output bits. However, on typical photographic images,
very good compression levels can be obtained with no visible change, and
remarkably high compression levels are possible if you can tolerate a
low-quality image. For more details, see the references, or just experiment
with various compression settings.
This software implements JPEG baseline, extended-sequential, and progressive
compression processes. Provision is made for supporting all variants of these
processes, although some uncommon parameter settings aren't implemented yet.
For legal reasons, we are not distributing code for the arithmetic-coding
variants of JPEG; see LEGAL ISSUES. We have made no provision for supporting
the hierarchical or lossless processes defined in the standard.
We provide a set of library routines for reading and writing JPEG image files,
plus two simple applications "cjpeg" and "djpeg", which use the library to
plus two sample applications "cjpeg" and "djpeg", which use the library to
perform conversion between JPEG and some other popular image file formats.
The library is intended to be reused in other applications.
This software implements JPEG baseline and extended-sequential compression
processes. Provision is made for supporting all variants of these processes,
although some uncommon parameter settings aren't implemented yet. For legal
reasons, we are not distributing code for the arithmetic-coding process; see
LEGAL ISSUES. At present we have made no provision for supporting the
progressive, hierarchical, or lossless processes defined in the standard.
(Support for progressive mode will be offered in a future release.)
In order to support file conversion and viewing software, we have included
considerable functionality beyond the bare JPEG coding/decoding capability;
for example, the color quantization modules are not strictly part of JPEG
decoding, but they are essential for output to colormapped file formats or
colormapped displays. These extra functions can be compiled out of the
library if not required for a particular application. We have also included
two simple applications for inserting and extracting textual comments in
JFIF files.
"jpegtran", a utility for lossless transcoding between different JPEG
processes, and "rdjpgcom" and "wrjpgcom", two simple applications for
inserting and extracting textual comments in JFIF files.
The emphasis in designing this software has been on achieving portability and
flexibility, while also making it fast enough to be useful. In particular,
the software is not intended to be read as a tutorial on JPEG. (See the
REFERENCES section for introductory material.) While we hope that the entire
package will someday be industrial-strength code, much remains to be done in
performance tuning and in improving the capabilities of individual modules.
REFERENCES section for introductory material.) Rather, it is intended to
be reliable, portable, industrial-strength code. We do not claim to have
achieved that goal in every aspect of the software, but we strive for it.
We welcome the use of this software as a component of commercial products.
No royalty is required, but we do ask for an acknowledgement in product
@ -235,12 +237,13 @@ charging $95 for Part 1 and $47 for Part 2, plus 7% shipping/handling. The
standard is divided into two parts, Part 1 being the actual specification,
while Part 2 covers compliance testing methods. Part 1 is titled "Digital
Compression and Coding of Continuous-tone Still Images, Part 1: Requirements
and guidelines" and has document number ISO/IEC IS 10918-1. As of mid-1994,
Part 2 is still at Draft International Standard status. It is titled "Digital
Compression and Coding of Continuous-tone Still Images, Part 2: Compliance
testing" and has document number ISO/IEC DIS 10918-2. (The document number
will change to IS 10918-2 when final approval is obtained.) A Part 3,
covering extensions, is likely to appear in draft form in late 1994.
and guidelines" and has document number ISO/IEC IS 10918-1. Part 2 is titled
"Digital Compression and Coding of Continuous-tone Still Images, Part 2:
Compliance testing" and has document number ISO/IEC IS 10918-2.
Extensions to the original JPEG standard are defined in Part 3, a new ISO
document. Part 3 is undergoing ISO balloting and is expected to be approved
by the end of 1995. IJG currently does not support any Part 3 extensions.
The JPEG standard does not specify all details of an interchangeable file
format. For the omitted details we follow the "JFIF" conventions, revision
@ -257,12 +260,17 @@ to the server to obtain the JFIF document; send the message "help" if you have
trouble.
The TIFF 6.0 file format specification can be obtained by FTP from sgi.com
(192.48.153.1), file graphics/tiff/TIFF6.ps.Z; or you can order a printed copy
from Aldus Corp. at (206) 628-6593. It should be noted that the TIFF 6.0 spec
of 3-June-92 has a number of serious problems in its JPEG features. A
redesign effort is currently underway to correct these problems; it is
expected to result in a new, incompatible, spec. IJG intends to support the
corrected version of TIFF when the new spec is issued.
(192.48.153.1), file graphics/tiff/TIFF6.ps.Z; or you can order a printed
copy from Aldus Corp. at (206) 628-6593. The JPEG incorporation scheme
found in the TIFF 6.0 spec of 3-June-92 has a number of serious problems.
IJG does not recommend use of the TIFF 6.0 design (TIFF Compression tag 6).
Instead, we recommend the JPEG design proposed by TIFF Technical Note #2
(Compression tag 7). Copies of this Note can be obtained from sgi.com or
from ftp.uu.net:/graphics/jpeg/. It is expected that the next revision of
the TIFF spec will replace the 6.0 JPEG design with the Note's design.
Although IJG's own code does not support TIFF/JPEG, the free libtiff library
uses our library to implement TIFF/JPEG per the Note. libtiff is available
from sgi.com:/graphics/tiff/.
ARCHIVE LOCATIONS
@ -271,7 +279,7 @@ ARCHIVE LOCATIONS
The "official" archive site for this software is ftp.uu.net (Internet
address 192.48.96.9). The most recent released version can always be found
there in directory graphics/jpeg. This particular version will be archived
as graphics/jpeg/jpegsrc.v5b.tar.gz. If you are on the Internet, you
as graphics/jpeg/jpegsrc.v6.tar.gz. If you are on the Internet, you
can retrieve files from ftp.uu.net by standard anonymous FTP. If you don't
have FTP access, UUNET's archives are also available via UUCP; contact
help@uunet.uu.net for information on retrieving files that way.
@ -281,9 +289,10 @@ you can probably find a copy at any site that archives comp.sources.misc
submissions. However, only ftp.uu.net is guaranteed to have the latest
official version.
You can also obtain this software from CompuServe, in the GRAPHSUPPORT forum
(GO GRAPHSUP), library 12 "JPEG Tools". Again, CompuServe is not guaranteed
to have the very latest version.
You can also obtain this software in DOS-compatible "zip" archive format from
the SimTel archives (ftp.coast.net:/SimTel/msdos/graphics/), or on CompuServe
in the GRAPHSUPPORT forum (GO GRAPHSUP), library 12 "JPEG Tools". Again,
these versions may sometimes lag behind the ftp.uu.net release.
The JPEG FAQ (Frequently Asked Questions) article is a useful source of
general information about JPEG. It is updated constantly and therefore is
@ -319,8 +328,8 @@ A different free JPEG implementation, written by the PVRG group at Stanford,
is available from havefun.stanford.edu in directory pub/jpeg. This program
is designed for research and experimentation rather than production use;
it is slower, harder to use, and less portable than the IJG code, but it
implements a larger subset of the JPEG standard. In particular, it supports
lossless JPEG.
is easier to read and modify. Also, the PVRG code supports lossless JPEG,
which we do not.
FILE FORMAT WARS
@ -336,22 +345,38 @@ exchange compressed files.)
The file format we have adopted is called JFIF (see REFERENCES). This format
has been agreed to by a number of major commercial JPEG vendors, and it has
become the de facto standard. JFIF is a minimal or "low end" representation.
Work is also going forward to incorporate JPEG compression into the TIFF
standard, for use in "high end" applications that need to record a lot of
additional data about an image. We intend to support TIFF in the future.
We hope that these two formats will be sufficient and that other,
incompatible JPEG file formats will not proliferate.
We recommend the use of TIFF/JPEG (TIFF revision 6.0 as modified by TIFF
Technical Note #2) for "high end" applications that need to record a lot of
additional data about an image. TIFF/JPEG is fairly new and not yet widely
supported, unfortunately.
Indeed, part of the reason for developing and releasing this free software is
to help force rapid convergence to de facto standards for JPEG file formats.
SUPPORT STANDARD, NON-PROPRIETARY FORMATS: demand JFIF or TIFF/JPEG!
The upcoming JPEG Part 3 standard defines a file format called SPIFF.
SPIFF is interoperable with JFIF, in the sense that most JFIF decoders should
be able to read the most common variant of SPIFF. SPIFF has some technical
advantages over JFIF, but its major claim to fame is simply that it is an
official standard rather than an informal one. At this point it is unclear
whether SPIFF will supersede JFIF or whether JFIF will remain the de-facto
standard. IJG intends to support SPIFF once the standard is frozen, but we
have not decided whether it should become our default output format or not.
(In any case, our decoder will remain capable of reading JFIF indefinitely.)
Various proprietary file formats incorporating JPEG compression also exist.
We have little or no sympathy for the existence of these formats. Indeed,
one of the original reasons for developing this free software was to help
force convergence on common, open format standards for JPEG files. Don't
use a proprietary file format!
TO DO
=====
In future versions, we are considering supporting progressive JPEG
compression, the upcoming JPEG Part 3 extensions, and other improvements.
In future versions, we are considering supporting some of the upcoming JPEG
Part 3 extensions --- principally, variable quantization and the SPIFF file
format.
Tuning the software for better behavior at low quality/high compression
settings is also of interest. The current method for scaling the
quantization tables is known not to be very good at low Q values.
As always, speeding things up is high on our priority list.

32
ansi2knr.c
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@ -4,19 +4,27 @@
/* Convert ANSI function declarations to K&R syntax */
/*
ansi2knr is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
to anyone for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing. Refer
to the GNU General Public License for full details.
ansi2knr is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY. No author or distributor accepts responsibility to anyone for the
consequences of using it or for whether it serves any particular purpose or
works at all, unless he says so in writing. Refer to the GNU General Public
License (the "GPL") for full details.
Everyone is granted permission to copy, modify and redistribute
ansi2knr, but only under the conditions described in the GNU
General Public License. A copy of this license is supposed to have been
given to you along with ansi2knr so you can know your rights and
responsibilities. It should be in a file named COPYING. Among other
things, the copyright notice and this notice must be preserved on all
copies.
Everyone is granted permission to copy, modify and redistribute ansi2knr,
but only under the conditions described in the GPL. A copy of this license
is supposed to have been given to you along with ansi2knr so you can know
your rights and responsibilities. It should be in a file named COPYLEFT.
[In the IJG distribution, the GPL appears below, not in a separate file.]
Among other things, the copyright notice and this notice must be preserved
on all copies.
We explicitly state here what we believe is already implied by the GPL: if
the ansi2knr program is distributed as a separate set of sources and a
separate executable file which are aggregated on a storage medium together
with another program, this in itself does not bring the other program under
the GPL, nor does the mere fact that such a program or the procedures for
constructing it invoke the ansi2knr executable bring any other part of the
program under the GPL.
*/
/*

179
cdjpeg.c Normal file
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@ -0,0 +1,179 @@
/*
* cdjpeg.c
*
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains common support routines used by the IJG application
* programs (cjpeg, djpeg, jpegtran).
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include <ctype.h> /* to declare isupper(), tolower() */
#ifdef NEED_SIGNAL_CATCHER
#include <signal.h> /* to declare signal() */
#endif
#ifdef USE_SETMODE
#include <fcntl.h> /* to declare setmode()'s parameter macros */
/* If you have setmode() but not <io.h>, just delete this line: */
#include <io.h> /* to declare setmode() */
#endif
/*
* Signal catcher to ensure that temporary files are removed before aborting.
* NB: for Amiga Manx C this is actually a global routine named _abort();
* we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus...
*/
#ifdef NEED_SIGNAL_CATCHER
static j_common_ptr sig_cinfo;
GLOBAL void /* must be global for Manx C */
signal_catcher (int signum)
{
if (sig_cinfo != NULL) {
if (sig_cinfo->err != NULL) /* turn off trace output */
sig_cinfo->err->trace_level = 0;
jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */
}
exit(EXIT_FAILURE);
}
GLOBAL void
enable_signal_catcher (j_common_ptr cinfo)
{
sig_cinfo = cinfo;
signal(SIGINT, signal_catcher);
#ifdef SIGTERM /* not all systems have SIGTERM */
signal(SIGTERM, signal_catcher);
#endif
}
#endif
/*
* Optional progress monitor: display a percent-done figure on stderr.
*/
#ifdef PROGRESS_REPORT
METHODDEF void
progress_monitor (j_common_ptr cinfo)
{
cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress;
int total_passes = prog->pub.total_passes + prog->total_extra_passes;
int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
if (percent_done != prog->percent_done) {
prog->percent_done = percent_done;
if (total_passes > 1) {
fprintf(stderr, "\rPass %d/%d: %3d%% ",
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
} else {
fprintf(stderr, "\r %3d%% ", percent_done);
}
fflush(stderr);
}
}
GLOBAL void
start_progress_monitor (j_common_ptr cinfo, cd_progress_ptr progress)
{
/* Enable progress display, unless trace output is on */
if (cinfo->err->trace_level == 0) {
progress->pub.progress_monitor = progress_monitor;
progress->completed_extra_passes = 0;
progress->total_extra_passes = 0;
progress->percent_done = -1;
cinfo->progress = &progress->pub;
}
}
GLOBAL void
end_progress_monitor (j_common_ptr cinfo)
{
/* Clear away progress display */
if (cinfo->err->trace_level == 0) {
fprintf(stderr, "\r \r");
fflush(stderr);
}
}
#endif
/*
* Case-insensitive matching of possibly-abbreviated keyword switches.
* keyword is the constant keyword (must be lower case already),
* minchars is length of minimum legal abbreviation.
*/
GLOBAL boolean
keymatch (char * arg, const char * keyword, int minchars)
{
register int ca, ck;
register int nmatched = 0;
while ((ca = *arg++) != '\0') {
if ((ck = *keyword++) == '\0')
return FALSE; /* arg longer than keyword, no good */
if (isupper(ca)) /* force arg to lcase (assume ck is already) */
ca = tolower(ca);
if (ca != ck)
return FALSE; /* no good */
nmatched++; /* count matched characters */
}
/* reached end of argument; fail if it's too short for unique abbrev */
if (nmatched < minchars)
return FALSE;
return TRUE; /* A-OK */
}
/*
* Routines to establish binary I/O mode for stdin and stdout.
* Non-Unix systems often require some hacking to get out of text mode.
*/
GLOBAL FILE *
read_stdin (void)
{
FILE * input_file = stdin;
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdin), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
fprintf(stderr, "Cannot reopen stdin\n");
exit(EXIT_FAILURE);
}
#endif
return input_file;
}
GLOBAL FILE *
write_stdout (void)
{
FILE * output_file = stdout;
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdout), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
fprintf(stderr, "Cannot reopen stdout\n");
exit(EXIT_FAILURE);
}
#endif
return output_file;
}

59
cdjpeg.h
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@ -1,7 +1,7 @@
/*
* cdjpeg.h
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -102,7 +102,16 @@ typedef struct cdjpeg_progress_mgr * cd_progress_ptr;
#define jinit_write_rle jIWrRLE
#define jinit_read_targa jIRdTarga
#define jinit_write_targa jIWrTarga
#define read_quant_tables RdQTables
#define read_scan_script RdScnScript
#define set_quant_slots SetQSlots
#define set_sample_factors SetSFacts
#define read_color_map RdCMap
#define enable_signal_catcher EnSigCatcher
#define start_progress_monitor StProgMon
#define end_progress_monitor EnProgMon
#define read_stdin RdStdin
#define write_stdout WrStdout
#endif /* NEED_SHORT_EXTERNAL_NAMES */
/* Module selection routines for I/O modules. */
@ -119,6 +128,52 @@ EXTERN djpeg_dest_ptr jinit_write_rle JPP((j_decompress_ptr cinfo));
EXTERN cjpeg_source_ptr jinit_read_targa JPP((j_compress_ptr cinfo));
EXTERN djpeg_dest_ptr jinit_write_targa JPP((j_decompress_ptr cinfo));
/* Other global routines */
/* cjpeg support routines (in rdswitch.c) */
EXTERN boolean read_quant_tables JPP((j_compress_ptr cinfo, char * filename,
int scale_factor, boolean force_baseline));
EXTERN boolean read_scan_script JPP((j_compress_ptr cinfo, char * filename));
EXTERN boolean set_quant_slots JPP((j_compress_ptr cinfo, char *arg));
EXTERN boolean set_sample_factors JPP((j_compress_ptr cinfo, char *arg));
/* djpeg support routines (in rdcolmap.c) */
EXTERN void read_color_map JPP((j_decompress_ptr cinfo, FILE * infile));
/* common support routines (in cdjpeg.c) */
EXTERN void enable_signal_catcher JPP((j_common_ptr cinfo));
EXTERN void start_progress_monitor JPP((j_common_ptr cinfo,
cd_progress_ptr progress));
EXTERN void end_progress_monitor JPP((j_common_ptr cinfo));
EXTERN boolean keymatch JPP((char * arg, const char * keyword, int minchars));
EXTERN FILE * read_stdin JPP((void));
EXTERN FILE * write_stdout JPP((void));
/* miscellaneous useful macros */
#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
#define READ_BINARY "r"
#define WRITE_BINARY "w"
#else
#define READ_BINARY "rb"
#define WRITE_BINARY "wb"
#endif
#ifndef EXIT_FAILURE /* define exit() codes if not provided */
#define EXIT_FAILURE 1
#endif
#ifndef EXIT_SUCCESS
#ifdef VMS
#define EXIT_SUCCESS 1 /* VMS is very nonstandard */
#else
#define EXIT_SUCCESS 0
#endif
#endif
#ifndef EXIT_WARNING
#ifdef VMS
#define EXIT_WARNING 1 /* VMS is very nonstandard */
#else
#define EXIT_WARNING 2
#endif
#endif

28
change.log
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@ -1,6 +1,34 @@
CHANGE LOG for Independent JPEG Group's JPEG software
Version 6 2-Aug-95
-------------------
Progressive JPEG support: library can read and write full progressive JPEG
files. A "buffered image" mode supports incremental decoding for on-the-fly
display of progressive images. Simply recompiling an existing IJG-v5-based
decoder with v6 should allow it to read progressive files, though of course
without any special progressive display.
New "jpegtran" application performs lossless transcoding between different
JPEG formats; primarily, it can be used to convert baseline to progressive
JPEG and vice versa. In support of jpegtran, the library now allows lossless
reading and writing of JPEG files as DCT coefficient arrays. This ability
may be of use in other applications.
Notes for programmers:
* We changed jpeg_start_decompress() to be able to suspend; this makes all
decoding modes available to suspending-input applications. However,
existing applications that use suspending input will need to be changed
to check the return value from jpeg_start_decompress(). You don't need to
do anything if you don't use a suspending data source.
* We changed the interface to the virtual array routines: access_virt_array
routines now take a count of the number of rows to access this time. The
last parameter to request_virt_array routines is now interpreted as the
maximum number of rows that may be accessed at once, but not necessarily
the height of every access.
Version 5b 15-Mar-95
---------------------

60
cjpeg.1
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@ -1,4 +1,4 @@
.TH CJPEG 1 "12 December 1994"
.TH CJPEG 1 "15 June 1995"
.SH NAME
cjpeg \- compress an image file to a JPEG file
.SH SYNOPSIS
@ -59,6 +59,9 @@ runs somewhat slower and needs much more memory. Image quality and speed of
decompression are unaffected by
.BR \-optimize .
.TP
.B \-progressive
Create progressive JPEG file (see below).
.TP
.B \-targa
Input file is Targa format. Targa files that contain an "identification"
field will not be automatically recognized by
@ -84,7 +87,7 @@ often about right. If you see defects at
image. (The optimal setting will vary from one image to another.)
.PP
.B \-quality
100 will generate a quantization table of all 1's, eliminating loss in the
100 will generate a quantization table of all 1's, minimizing loss in the
quantization step (but there is still information loss in subsampling, as well
as roundoff error). This setting is mainly of interest for experimental
purposes. Quality values above about 95 are
@ -101,10 +104,23 @@ values below about 25 generate 2-byte quantization tables, which are
considered optional in the JPEG standard.
.B cjpeg
emits a warning message when you give such a quality value, because some
commercial JPEG programs may be unable to decode the resulting file. Use
other JPEG programs may be unable to decode the resulting file. Use
.B \-baseline
if you need to ensure compatibility at low quality values.)
.PP
The
.B \-progressive
switch creates a "progressive JPEG" file. In this type of JPEG file, the data
is stored in multiple scans of increasing quality. If the file is being
transmitted over a slow communications link, the decoder can use the first
scan to display a low-quality image very quickly, and can then improve the
display with each subsequent scan. The final image is exactly equivalent to a
standard JPEG file of the same quality setting, and the total file size is
about the same --- often a little smaller.
.B Caution:
progressive JPEG is not yet widely implemented, so many decoders will be
unable to view a progressive JPEG file at all.
.PP
Switches for advanced users:
.TP
.B \-dct int
@ -171,42 +187,25 @@ blur the image, however.
.PP
Switches for wizards:
.TP
.B \-arithmetic
Use arithmetic coding rather than Huffman coding. (Not currently
supported for legal reasons.)
.TP
.B \-baseline
Force a baseline JPEG file to be generated. This clamps quantization values
to 8 bits even at low quality settings.
.TP
.B \-nointerleave
Generate noninterleaved JPEG file (not yet supported).
.TP
.BI \-qtables " file"
Use the quantization tables given in the specified file. The file should
contain one to four tables (64 values each) as plain text. Comments preceded
by '#' may be included in the file. The tables are implicitly numbered
0,1,etc. If
.BI \-quality " N"
is also specified, the values in the file are scaled according to
.BR cjpeg 's
quality scaling curve.
Use the quantization tables given in the specified text file.
.TP
.BI \-qslots " N[,...]"
Select which quantization table to use for each color component. By default,
table 0 is used for luminance and table 1 for chrominance components.
Select which quantization table to use for each color component.
.TP
.BI \-sample " HxV[,...]"
Set JPEG sampling factors. If you specify fewer H/V pairs than there are
components, the remaining components are set to 1x1 sampling. The default
setting is equivalent to \fB\-sample 2x2\fR.
Set JPEG sampling factors for each color component.
.TP
.BI \-scans " file"
Use the scan script given in the specified text file.
.PP
The "wizard" switches are intended for experimentation with JPEG. If you
don't know what you are doing, \fBdon't use them\fR. You can easily produce
files with worse image quality and/or poorer compression than you'll get from
the default settings. Furthermore, these switches should not be used when
making files intended for general use, because not all JPEG implementations
will support unusual JPEG parameter settings.
don't know what you are doing, \fBdon't use them\fR. These switches are
documented further in the file wizard.doc.
.SH EXAMPLES
.LP
This example compresses the PPM file foo.ppm with a quality factor of
@ -243,7 +242,9 @@ option to
is worth using when you are making a "final" version for posting or archiving.
It's also a win when you are using low quality settings to make very small
JPEG files; the percentage improvement is often a lot more than it is on
larger files.
larger files. (At present,
.B \-optimize
mode is always selected when generating progressive JPEG files.)
.SH ENVIRONMENT
.TP
.B JPEGMEM
@ -257,6 +258,7 @@ itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR djpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br

398
cjpeg.c
View File

@ -1,7 +1,7 @@
/*
* cjpeg.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -26,16 +26,6 @@
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#include <ctype.h> /* to declare isupper(), tolower() */
#ifdef NEED_SIGNAL_CATCHER
#include <signal.h> /* to declare signal() */
#endif
#ifdef USE_SETMODE
#include <fcntl.h> /* to declare setmode()'s parameter macros */
/* If you have setmode() but not <io.h>, just delete this line: */
#include <io.h> /* to declare setmode() */
#endif
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
#include <SIOUX.h> /* Metrowerks declares it here */
@ -45,32 +35,6 @@
#endif
#endif
#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
#define READ_BINARY "r"
#define WRITE_BINARY "w"
#else
#define READ_BINARY "rb"
#define WRITE_BINARY "wb"
#endif
#ifndef EXIT_FAILURE /* define exit() codes if not provided */
#define EXIT_FAILURE 1
#endif
#ifndef EXIT_SUCCESS
#ifdef VMS
#define EXIT_SUCCESS 1 /* VMS is very nonstandard */
#else
#define EXIT_SUCCESS 0
#endif
#endif
#ifndef EXIT_WARNING
#ifdef VMS
#define EXIT_WARNING 1 /* VMS is very nonstandard */
#else
#define EXIT_WARNING 2
#endif
#endif
/* Create the add-on message string table. */
@ -159,59 +123,6 @@ select_file_type (j_compress_ptr cinfo, FILE * infile)
}
/*
* Signal catcher to ensure that temporary files are removed before aborting.
* NB: for Amiga Manx C this is actually a global routine named _abort();
* we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus...
*/
#ifdef NEED_SIGNAL_CATCHER
static j_common_ptr sig_cinfo;
GLOBAL void
signal_catcher (int signum)
{
if (sig_cinfo != NULL) {
if (sig_cinfo->err != NULL) /* turn off trace output */
sig_cinfo->err->trace_level = 0;
jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */
}
exit(EXIT_FAILURE);
}
#endif
/*
* Optional routine to display a percent-done figure on stderr.
*/
#ifdef PROGRESS_REPORT
METHODDEF void
progress_monitor (j_common_ptr cinfo)
{
cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress;
int total_passes = prog->pub.total_passes + prog->total_extra_passes;
int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
if (percent_done != prog->percent_done) {
prog->percent_done = percent_done;
if (total_passes > 1) {
fprintf(stderr, "\rPass %d/%d: %3d%% ",
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
} else {
fprintf(stderr, "\r %3d%% ", percent_done);
}
fflush(stderr);
}
}
#endif
/*
* Argument-parsing code.
* The switch parser is designed to be useful with DOS-style command line
@ -242,6 +153,9 @@ usage (void)
#ifdef ENTROPY_OPT_SUPPORTED
fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
#endif
#ifdef C_PROGRESSIVE_SUPPORTED
fprintf(stderr, " -progressive Create progressive JPEG file\n");
#endif
#ifdef TARGA_SUPPORTED
fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n");
#endif
@ -270,212 +184,16 @@ usage (void)
fprintf(stderr, " -arithmetic Use arithmetic coding\n");
#endif
fprintf(stderr, " -baseline Force baseline output\n");
#ifdef C_MULTISCAN_FILES_SUPPORTED
fprintf(stderr, " -nointerleave Create noninterleaved JPEG file\n");
#endif
fprintf(stderr, " -qtables file Use quantization tables given in file\n");
fprintf(stderr, " -qslots N[,...] Set component quantization tables\n");
fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n");
#ifdef C_MULTISCAN_FILES_SUPPORTED
fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n");
#endif
exit(EXIT_FAILURE);
}
LOCAL boolean
keymatch (char * arg, const char * keyword, int minchars)
/* Case-insensitive matching of (possibly abbreviated) keyword switches. */
/* keyword is the constant keyword (must be lower case already), */
/* minchars is length of minimum legal abbreviation. */
{
register int ca, ck;
register int nmatched = 0;
while ((ca = *arg++) != '\0') {
if ((ck = *keyword++) == '\0')
return FALSE; /* arg longer than keyword, no good */
if (isupper(ca)) /* force arg to lcase (assume ck is already) */
ca = tolower(ca);
if (ca != ck)
return FALSE; /* no good */
nmatched++; /* count matched characters */
}
/* reached end of argument; fail if it's too short for unique abbrev */
if (nmatched < minchars)
return FALSE;
return TRUE; /* A-OK */
}
LOCAL int
qt_getc (FILE * file)
/* Read next char, skipping over any comments (# to end of line) */
/* A comment/newline sequence is returned as a newline */
{
register int ch;
ch = getc(file);
if (ch == '#') {
do {
ch = getc(file);
} while (ch != '\n' && ch != EOF);
}
return ch;
}
LOCAL long
read_qt_integer (FILE * file)
/* Read an unsigned decimal integer from a quantization-table file */
/* Swallows one trailing character after the integer */
{
register int ch;
register long val;
/* Skip any leading whitespace, detect EOF */
do {
ch = qt_getc(file);
if (ch == EOF)
return EOF;
} while (isspace(ch));
if (! isdigit(ch)) {
fprintf(stderr, "%s: bogus data in quantization file\n", progname);
exit(EXIT_FAILURE);
}
val = ch - '0';
while (ch = qt_getc(file), isdigit(ch)) {
val *= 10;
val += ch - '0';
}
return val;
}
LOCAL void
read_quant_tables (j_compress_ptr cinfo, char * filename, int scale_factor,
boolean force_baseline)
/* Read a set of quantization tables from the specified file.
* The file is plain ASCII text: decimal numbers with whitespace between.
* Comments preceded by '#' may be included in the file.
* There may be one to NUM_QUANT_TBLS tables in the file, each of 64 values.
* The tables are implicitly numbered 0,1,etc.
* NOTE: does not affect the qslots mapping, which will default to selecting
* table 0 for luminance (or primary) components, 1 for chrominance components.
* You must use -qslots if you want a different component->table mapping.
*/
{
/* ZIG[i] is the zigzag-order position of the i'th element of a DCT block */
/* read in natural order (left to right, top to bottom). */
static const int ZIG[DCTSIZE2] = {
0, 1, 5, 6, 14, 15, 27, 28,
2, 4, 7, 13, 16, 26, 29, 42,
3, 8, 12, 17, 25, 30, 41, 43,
9, 11, 18, 24, 31, 40, 44, 53,
10, 19, 23, 32, 39, 45, 52, 54,
20, 22, 33, 38, 46, 51, 55, 60,
21, 34, 37, 47, 50, 56, 59, 61,
35, 36, 48, 49, 57, 58, 62, 63
};
FILE * fp;
int tblno, i;
long val;
unsigned int table[DCTSIZE2];
if ((fp = fopen(filename, "r")) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, filename);
exit(EXIT_FAILURE);
}
tblno = 0;
while ((val = read_qt_integer(fp)) != EOF) { /* read 1st element of table */
if (tblno >= NUM_QUANT_TBLS) {
fprintf(stderr, "%s: too many tables in file %s\n", progname, filename);
exit(EXIT_FAILURE);
}
table[0] = (unsigned int) val;
for (i = 1; i < DCTSIZE2; i++) {
if ((val = read_qt_integer(fp)) == EOF) {
fprintf(stderr, "%s: incomplete table in file %s\n", progname, filename);
exit(EXIT_FAILURE);
}
table[ZIG[i]] = (unsigned int) val;
}
jpeg_add_quant_table(cinfo, tblno, table, scale_factor, force_baseline);
tblno++;
}
fclose(fp);
}
LOCAL void
set_quant_slots (j_compress_ptr cinfo, char *arg)
/* Process a quantization-table-selectors parameter string, of the form
* N[,N,...]
* If there are more components than parameters, the last value is replicated.
*/
{
int val = 0; /* default table # */
int ci;
char ch;
for (ci = 0; ci < MAX_COMPONENTS; ci++) {
if (*arg) {
ch = ','; /* if not set by sscanf, will be ',' */
if (sscanf(arg, "%d%c", &val, &ch) < 1)
usage();
if (ch != ',')
usage(); /* syntax check */
if (val < 0 || val >= NUM_QUANT_TBLS) {
fprintf(stderr, "JPEG quantization tables are numbered 0..%d\n",
NUM_QUANT_TBLS-1);
exit(EXIT_FAILURE);
}
cinfo->comp_info[ci].quant_tbl_no = val;
while (*arg && *arg++ != ',') /* advance to next segment of arg string */
;
} else {
/* reached end of parameter, set remaining components to last table */
cinfo->comp_info[ci].quant_tbl_no = val;
}
}
}
LOCAL void
set_sample_factors (j_compress_ptr cinfo, char *arg)
/* Process a sample-factors parameter string, of the form
* HxV[,HxV,...]
* If there are more components than parameters, "1x1" is assumed.
*/
{
int ci, val1, val2;
char ch1, ch2;
for (ci = 0; ci < MAX_COMPONENTS; ci++) {
if (*arg) {
ch2 = ','; /* if not set by sscanf, will be ',' */
if (sscanf(arg, "%d%c%d%c", &val1, &ch1, &val2, &ch2) < 3)
usage();
if ((ch1 != 'x' && ch1 != 'X') || ch2 != ',')
usage(); /* syntax check */
if (val1 <= 0 || val1 > 4 || val2 <= 0 || val2 > 4) {
fprintf(stderr, "JPEG sampling factors must be 1..4\n");
exit(EXIT_FAILURE);
}
cinfo->comp_info[ci].h_samp_factor = val1;
cinfo->comp_info[ci].v_samp_factor = val2;
while (*arg && *arg++ != ',') /* advance to next segment of arg string */
;
} else {
/* reached end of parameter, set remaining components to 1x1 sampling */
cinfo->comp_info[ci].h_samp_factor = 1;
cinfo->comp_info[ci].v_samp_factor = 1;
}
}
}
LOCAL int
parse_switches (j_compress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
@ -493,9 +211,11 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
int quality; /* -quality parameter */
int q_scale_factor; /* scaling percentage for -qtables */
boolean force_baseline;
boolean simple_progressive;
char * qtablefile = NULL; /* saves -qtables filename if any */
char * qslotsarg = NULL; /* saves -qslots parm if any */
char * samplearg = NULL; /* saves -sample parm if any */
char * scansarg = NULL; /* saves -scans parm if any */
/* Set up default JPEG parameters. */
/* Note that default -quality level need not, and does not,
@ -504,6 +224,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
quality = 75; /* default -quality value */
q_scale_factor = 100; /* default to no scaling for -qtables */
force_baseline = FALSE; /* by default, allow 16-bit quantizers */
simple_progressive = FALSE;
is_targa = FALSE;
outfilename = NULL;
cinfo->err->trace_level = 0;
@ -578,16 +299,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
lval *= 1000L;
cinfo->mem->max_memory_to_use = lval * 1000L;
} else if (keymatch(arg, "nointerleave", 3)) {
/* Create noninterleaved file. */
#ifdef C_MULTISCAN_FILES_SUPPORTED
cinfo->interleave = FALSE;
#else
fprintf(stderr, "%s: sorry, multiple-scan support was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
/* Enable entropy parm optimization. */
#ifdef ENTROPY_OPT_SUPPORTED
@ -604,6 +315,17 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
usage();
outfilename = argv[argn]; /* save it away for later use */
} else if (keymatch(arg, "progressive", 1)) {
/* Select simple progressive mode. */
#ifdef C_PROGRESSIVE_SUPPORTED
simple_progressive = TRUE;
/* We must postpone execution until num_components is known. */
#else
fprintf(stderr, "%s: sorry, progressive output was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "quality", 1)) {
/* Quality factor (quantization table scaling factor). */
if (++argn >= argc) /* advance to next argument */
@ -659,6 +381,19 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
* default sampling factors.
*/
} else if (keymatch(arg, "scans", 2)) {
/* Set scan script. */
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (++argn >= argc) /* advance to next argument */
usage();
scansarg = argv[argn];
/* We must postpone reading the file in case -progressive appears. */
#else
fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "smooth", 2)) {
/* Set input smoothing factor. */
int val;
@ -689,14 +424,28 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
jpeg_set_quality(cinfo, quality, force_baseline);
if (qtablefile != NULL) /* process -qtables if it was present */
read_quant_tables(cinfo, qtablefile, q_scale_factor, force_baseline);
if (! read_quant_tables(cinfo, qtablefile,
q_scale_factor, force_baseline))
usage();
if (qslotsarg != NULL) /* process -qslots if it was present */
set_quant_slots(cinfo, qslotsarg);
if (! set_quant_slots(cinfo, qslotsarg))
usage();
if (samplearg != NULL) /* process -sample if it was present */
set_sample_factors(cinfo, samplearg);
if (! set_sample_factors(cinfo, samplearg))
usage();
#ifdef C_PROGRESSIVE_SUPPORTED
if (simple_progressive) /* process -progressive; -scans can override */
jpeg_simple_progression(cinfo);
#endif
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (scansarg != NULL) /* process -scans if it was present */
if (! read_scan_script(cinfo, scansarg))
usage();
#endif
}
return argn; /* return index of next arg (file name) */
@ -740,11 +489,7 @@ main (int argc, char **argv)
/* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
sig_cinfo = (j_common_ptr) &cinfo;
signal(SIGINT, signal_catcher);
#ifdef SIGTERM /* not all systems have SIGTERM */
signal(SIGTERM, signal_catcher);
#endif
enable_signal_catcher((j_common_ptr) &cinfo);
#endif
/* Initialize JPEG parameters.
@ -796,17 +541,7 @@ main (int argc, char **argv)
}
} else {
/* default input file is stdin */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdin), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open stdin\n", progname);
exit(EXIT_FAILURE);
}
#else
input_file = stdin;
#endif
input_file = read_stdin();
}
/* Open the output file. */
@ -817,28 +552,11 @@ main (int argc, char **argv)
}
} else {
/* default output file is stdout */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdout), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open stdout\n", progname);
exit(EXIT_FAILURE);
}
#else
output_file = stdout;
#endif
output_file = write_stdout();
}
#ifdef PROGRESS_REPORT
/* Enable progress display, unless trace output is on */
if (jerr.trace_level == 0) {
progress.pub.progress_monitor = progress_monitor;
progress.completed_extra_passes = 0;
progress.total_extra_passes = 0;
progress.percent_done = -1;
cinfo.progress = &progress.pub;
}
start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif
/* Figure out the input file format, and set up to read it. */
@ -878,11 +596,7 @@ main (int argc, char **argv)
fclose(output_file);
#ifdef PROGRESS_REPORT
/* Clear away progress display */
if (jerr.trace_level == 0) {
fprintf(stderr, "\r \r");
fflush(stderr);
}
end_progress_monitor((j_common_ptr) &cinfo);
#endif
/* All done. */

292
configure vendored
View File

@ -1,7 +1,7 @@
#!/bin/sh
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated automatically using autoconf version 2.1
# Generated automatically using autoconf version 2.4
# Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
#
# This configure script is free software; the Free Software Foundation
@ -220,7 +220,7 @@ EOF
verbose=yes ;;
-version | --version | --versio | --versi | --vers)
echo "configure generated by autoconf version 2.1"
echo "configure generated by autoconf version 2.4"
exit 0 ;;
-with-* | --with-*)
@ -294,19 +294,20 @@ if test -n "$ac_prev"; then
{ echo "configure: error: missing argument to --`echo $ac_prev | sed 's/_/-/g'`" 1>&2; exit 1; }
fi
trap 'rm -fr conftest* confdefs* core $ac_clean_files; exit 1' 1 2 15
trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15
# File descriptor usage:
# 0 unused; standard input
# 0 standard input
# 1 file creation
# 2 errors and warnings
# 3 unused; some systems may open it to /dev/tty
# 4 checking for... messages and results
# 3 some systems may open it to /dev/tty
# 4 used on the Kubota Titan
# 6 checking for... messages and results
# 5 compiler messages saved in config.log
if test "$silent" = yes; then
exec 4>/dev/null
exec 6>/dev/null
else
exec 4>&1
exec 6>&1
fi
exec 5>./config.log
@ -389,8 +390,8 @@ done
ac_ext=c
# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CPP $CPPFLAGS'
ac_compile='${CC-cc} $CFLAGS $CPPFLAGS conftest.$ac_ext -c 1>&5 2>&5'
ac_link='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext -o conftest $LIBS 1>&5 2>&5'
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5 2>&5'
ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5 2>&5'
if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
# Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
@ -408,9 +409,9 @@ fi
# Extract the first word of "gcc", so it can be a program name with args.
set dummy gcc; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_prog_CC'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
if test -n "$CC"; then
ac_cv_prog_CC="$CC" # Let the user override the test.
@ -429,15 +430,15 @@ fi
fi
CC="$ac_cv_prog_CC"
if test -n "$CC"; then
echo "$ac_t""$CC" 1>&4
echo "$ac_t""$CC" 1>&6
else
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
fi
echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_prog_gcc'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.c <<EOF
#ifdef __GNUC__
@ -450,16 +451,16 @@ else
ac_cv_prog_gcc=no
fi
fi
echo "$ac_t""$ac_cv_prog_gcc" 1>&4
echo "$ac_t""$ac_cv_prog_gcc" 1>&6
if test $ac_cv_prog_gcc = yes; then
GCC=yes
else
GCC=
fi
if test "${CFLAGS+set}" != set; then
echo $ac_n "checking whether ${CC-cc} accepts -O""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_prog_cc_o'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking whether ${CC-cc} accepts -O""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_prog_cc_o'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
echo 'int f(){ return 0; }' > conftest.c
if test -z "`${CC-cc} -O -c conftest.c 2>&1`"; then
@ -470,7 +471,7 @@ fi
rm -f conftest*
fi
echo "$ac_t""$ac_cv_prog_cc_o" 1>&4
echo "$ac_t""$ac_cv_prog_cc_o" 1>&6
if test $ac_cv_prog_cc_o = yes; then
CFLAGS="-O"
else
@ -478,14 +479,14 @@ fi
fi
fi
echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&4
echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
# On Suns, sometimes $CPP names a directory.
if test -n "$CPP" && test -d "$CPP"; then
CPP=
fi
if test -z "$CPP"; then
if eval "test \"`echo '${'ac_cv_prog_CPP'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
# This must be in double quotes, not single quotes, because CPP may get
# substituted into the Makefile and "${CC-cc}" will confuse make.
@ -493,7 +494,7 @@ else
# On the NeXT, cc -E runs the code through the compiler's parser,
# not just through cpp.
cat > conftest.$ac_ext <<EOF
#line 497 "configure"
#line 498 "configure"
#include "confdefs.h"
#include <assert.h>
Syntax Error
@ -507,7 +508,7 @@ else
rm -rf conftest*
CPP="${CC-cc} -E -traditional-cpp"
cat > conftest.$ac_ext <<EOF
#line 511 "configure"
#line 512 "configure"
#include "confdefs.h"
#include <assert.h>
Syntax Error
@ -526,20 +527,22 @@ fi
rm -f conftest*
ac_cv_prog_CPP="$CPP"
fi
CPP="$ac_cv_prog_CPP"
else
ac_cv_prog_CPP="$CPP"
fi
CPP="$ac_cv_prog_CPP"
echo "$ac_t""$CPP" 1>&4
echo "$ac_t""$CPP" 1>&6
# If we cannot run a trivial program, we must be cross compiling.
echo $ac_n "checking whether cross-compiling""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_c_cross'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking whether cross-compiling""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_c_cross'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
if test "$cross_compiling" = yes; then
ac_cv_cross=yes
ac_cv_c_cross=yes
else
cat > conftest.$ac_ext <<EOF
#line 543 "configure"
#line 546 "configure"
#include "confdefs.h"
main(){return(0);}
EOF
@ -553,14 +556,14 @@ fi
rm -fr conftest*
fi
cross_compiling=$ac_cv_c_cross
echo "$ac_t""$ac_cv_c_cross" 1>&4
echo "$ac_t""$ac_cv_c_cross" 1>&6
echo $ac_n "checking for function prototypes""... $ac_c" 1>&4
if eval "test \"`echo '${'ijg_cv_have_prototypes'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking for function prototypes""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ijg_cv_have_prototypes'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 564 "configure"
#line 567 "configure"
#include "confdefs.h"
int testfunction (int arg1, int * arg2); /* check prototypes */
@ -589,7 +592,7 @@ fi
rm -f conftest*
fi
echo "$ac_t""$ijg_cv_have_prototypes" 1>&4
echo "$ac_t""$ijg_cv_have_prototypes" 1>&6
if test $ijg_cv_have_prototypes = yes; then
cat >> confdefs.h <<\EOF
#define HAVE_PROTOTYPES
@ -603,12 +606,12 @@ else
echo where -switch is the proper switch.
fi
ac_safe=`echo "stddef.h" | tr './\055' '___'`
echo $ac_n "checking for stddef.h""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking for stddef.h""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 612 "configure"
#line 615 "configure"
#include "confdefs.h"
#include <stddef.h>
EOF
@ -625,22 +628,22 @@ fi
rm -f conftest*
fi
if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
cat >> confdefs.h <<\EOF
#define HAVE_STDDEF_H
EOF
else
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
fi
ac_safe=`echo "stdlib.h" | tr './\055' '___'`
echo $ac_n "checking for stdlib.h""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking for stdlib.h""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 644 "configure"
#line 647 "configure"
#include "confdefs.h"
#include <stdlib.h>
EOF
@ -657,22 +660,22 @@ fi
rm -f conftest*
fi
if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
cat >> confdefs.h <<\EOF
#define HAVE_STDLIB_H
EOF
else
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
fi
ac_safe=`echo "string.h" | tr './\055' '___'`
echo $ac_n "checking for string.h""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking for string.h""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 676 "configure"
#line 679 "configure"
#include "confdefs.h"
#include <string.h>
EOF
@ -689,19 +692,19 @@ fi
rm -f conftest*
fi
if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
:
else
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
cat >> confdefs.h <<\EOF
#define NEED_BSD_STRINGS
EOF
fi
echo $ac_n "checking for size_t""... $ac_c" 1>&4
echo $ac_n "checking for size_t""... $ac_c" 1>&6
cat > conftest.$ac_ext <<EOF
#line 705 "configure"
#line 708 "configure"
#include "confdefs.h"
#ifdef HAVE_STDDEF_H
@ -732,15 +735,15 @@ else
fi
rm -f conftest*
echo "$ac_t""$ijg_size_t_ok" 1>&4
echo "$ac_t""$ijg_size_t_ok" 1>&6
if test "$ijg_size_t_ok" != yes; then
ac_safe=`echo "sys/types.h" | tr './\055' '___'`
echo $ac_n "checking for sys/types.h""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking for sys/types.h""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 744 "configure"
#line 747 "configure"
#include "confdefs.h"
#include <sys/types.h>
EOF
@ -757,13 +760,13 @@ fi
rm -f conftest*
fi
if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
cat >> confdefs.h <<\EOF
#define NEED_SYS_TYPES_H
EOF
cat > conftest.$ac_ext <<EOF
#line 767 "configure"
#line 770 "configure"
#include "confdefs.h"
#include <sys/types.h>
EOF
@ -778,19 +781,19 @@ fi
rm -f conftest*
else
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
ijg_size_t_ok=no
fi
echo "$ac_t""$ijg_size_t_ok" 1>&4
echo "$ac_t""$ijg_size_t_ok" 1>&6
if test "$ijg_size_t_ok" = no; then
echo Type size_t is not defined in any of the usual places.
echo Try putting '"typedef unsigned int size_t;"' in jconfig.h.
fi
fi
echo $ac_n "checking for type unsigned char""... $ac_c" 1>&4
echo $ac_n "checking for type unsigned char""... $ac_c" 1>&6
cat > conftest.$ac_ext <<EOF
#line 794 "configure"
#line 797 "configure"
#include "confdefs.h"
int main() { return 0; }
@ -800,19 +803,19 @@ int t() {
EOF
if eval $ac_compile; then
rm -rf conftest*
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
cat >> confdefs.h <<\EOF
#define HAVE_UNSIGNED_CHAR
EOF
else
rm -rf conftest*
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
fi
rm -f conftest*
echo $ac_n "checking for type unsigned short""... $ac_c" 1>&4
echo $ac_n "checking for type unsigned short""... $ac_c" 1>&6
cat > conftest.$ac_ext <<EOF
#line 816 "configure"
#line 819 "configure"
#include "confdefs.h"
int main() { return 0; }
@ -822,19 +825,19 @@ int t() {
EOF
if eval $ac_compile; then
rm -rf conftest*
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
cat >> confdefs.h <<\EOF
#define HAVE_UNSIGNED_SHORT
EOF
else
rm -rf conftest*
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
fi
rm -f conftest*
echo $ac_n "checking for type void""... $ac_c" 1>&4
echo $ac_n "checking for type void""... $ac_c" 1>&6
cat > conftest.$ac_ext <<EOF
#line 838 "configure"
#line 841 "configure"
#include "confdefs.h"
/* Caution: a C++ compiler will insist on valid prototypes */
@ -865,22 +868,22 @@ int t() {
EOF
if eval $ac_compile; then
rm -rf conftest*
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
else
rm -rf conftest*
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
cat >> confdefs.h <<\EOF
#define void char
EOF
fi
rm -f conftest*
echo $ac_n "checking for working const""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_c_const'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking for working const""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 884 "configure"
#line 887 "configure"
#include "confdefs.h"
int main() { return 0; }
@ -893,7 +896,7 @@ char const *const *ccp;
char **p;
/* NEC SVR4.0.2 mips cc rejects this. */
struct point {int x, y;};
static struct point const zero;
static struct point const zero = {0,0};
/* AIX XL C 1.02.0.0 rejects this.
It does not let you subtract one const X* pointer from another in an arm
of an if-expression whose if-part is not a constant expression */
@ -940,7 +943,7 @@ fi
rm -f conftest*
fi
echo "$ac_t""$ac_cv_c_const" 1>&4
echo "$ac_t""$ac_cv_c_const" 1>&6
if test $ac_cv_c_const = no; then
cat >> confdefs.h <<\EOF
#define const
@ -948,10 +951,10 @@ EOF
fi
echo $ac_n "checking for inline""... $ac_c" 1>&4
echo $ac_n "checking for inline""... $ac_c" 1>&6
ijg_cv_inline=""
cat > conftest.$ac_ext <<EOF
#line 955 "configure"
#line 958 "configure"
#include "confdefs.h"
int main() { return 0; }
@ -966,7 +969,7 @@ if eval $ac_compile; then
else
rm -rf conftest*
cat > conftest.$ac_ext <<EOF
#line 970 "configure"
#line 973 "configure"
#include "confdefs.h"
int main() { return 0; }
@ -981,7 +984,7 @@ if eval $ac_compile; then
else
rm -rf conftest*
cat > conftest.$ac_ext <<EOF
#line 985 "configure"
#line 988 "configure"
#include "confdefs.h"
int main() { return 0; }
@ -1001,13 +1004,13 @@ rm -f conftest*
fi
rm -f conftest*
echo "$ac_t""$ijg_cv_inline" 1>&4
echo "$ac_t""$ijg_cv_inline" 1>&6
cat >> confdefs.h <<EOF
#define INLINE $ijg_cv_inline
EOF
echo $ac_n "checking for broken incomplete types""... $ac_c" 1>&4
echo $ac_n "checking for broken incomplete types""... $ac_c" 1>&6
cat > conftest.$ac_ext <<EOF
#line 1011 "configure"
#line 1014 "configure"
#include "confdefs.h"
typedef struct undefined_structure * undef_struct_ptr;
int main() { return 0; }
@ -1017,19 +1020,19 @@ int t() {
EOF
if eval $ac_compile; then
rm -rf conftest*
echo "$ac_t""ok" 1>&4
echo "$ac_t""ok" 1>&6
else
rm -rf conftest*
echo "$ac_t""broken" 1>&4
echo "$ac_t""broken" 1>&6
cat >> confdefs.h <<\EOF
#define INCOMPLETE_TYPES_BROKEN
EOF
fi
rm -f conftest*
echo $ac_n "checking for short external names""... $ac_c" 1>&4
echo $ac_n "checking for short external names""... $ac_c" 1>&6
cat > conftest.$ac_ext <<EOF
#line 1033 "configure"
#line 1036 "configure"
#include "confdefs.h"
int possibly_duplicate_function () { return 0; }
@ -1042,10 +1045,10 @@ int t() {
EOF
if eval $ac_link; then
rm -rf conftest*
echo "$ac_t""ok" 1>&4
echo "$ac_t""ok" 1>&6
else
rm -rf conftest*
echo "$ac_t""short" 1>&4
echo "$ac_t""short" 1>&6
cat >> confdefs.h <<\EOF
#define NEED_SHORT_EXTERNAL_NAMES
EOF
@ -1053,14 +1056,14 @@ EOF
fi
rm -f conftest*
echo $ac_n "checking to see if char is signed""... $ac_c" 1>&4
echo $ac_n "checking to see if char is signed""... $ac_c" 1>&6
if test "$cross_compiling" = yes; then
echo Assuming that char is signed on target machine.
echo If it is unsigned, this will be a little bit inefficient.
else
cat > conftest.$ac_ext <<EOF
#line 1064 "configure"
#line 1067 "configure"
#include "confdefs.h"
#ifdef HAVE_PROTOTYPES
@ -1086,22 +1089,22 @@ main() {
EOF
eval $ac_link
if test -s conftest && (./conftest; exit) 2>/dev/null; then
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
cat >> confdefs.h <<\EOF
#define CHAR_IS_UNSIGNED
EOF
else
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
fi
fi
rm -fr conftest*
echo $ac_n "checking to see if right shift is signed""... $ac_c" 1>&4
echo $ac_n "checking to see if right shift is signed""... $ac_c" 1>&6
if test "$cross_compiling" = yes; then
echo "$ac_t""Assuming that right shift is signed on target machine." 1>&4
echo "$ac_t""Assuming that right shift is signed on target machine." 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 1105 "configure"
#line 1108 "configure"
#include "confdefs.h"
#ifdef HAVE_PROTOTYPES
@ -1133,22 +1136,22 @@ main() {
EOF
eval $ac_link
if test -s conftest && (./conftest; exit) 2>/dev/null; then
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
cat >> confdefs.h <<\EOF
#define RIGHT_SHIFT_IS_UNSIGNED
EOF
else
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
fi
fi
rm -fr conftest*
echo $ac_n "checking to see if fopen accepts b spec""... $ac_c" 1>&4
echo $ac_n "checking to see if fopen accepts b spec""... $ac_c" 1>&6
if test "$cross_compiling" = yes; then
echo "$ac_t""Assuming that it does." 1>&4
echo "$ac_t""Assuming that it does." 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 1152 "configure"
#line 1155 "configure"
#include "confdefs.h"
#include <stdio.h>
@ -1160,9 +1163,9 @@ main() {
EOF
eval $ac_link
if test -s conftest && (./conftest; exit) 2>/dev/null; then
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
else
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
cat >> confdefs.h <<\EOF
#define DONT_USE_B_MODE
EOF
@ -1181,15 +1184,16 @@ rm -fr conftest*
# AFS /usr/afsws/bin/install, which mishandles nonexistent args
# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
# ./install, which can be erroneously created by make from ./install.sh.
echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&4
echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
if test -z "$INSTALL"; then
if eval "test \"`echo '${'ijg_cv_path_install'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
if eval "test \"`echo '$''{'ijg_cv_path_install'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
for ac_dir in $PATH; do
case "$ac_dir" in
''|.|/etc|/usr/sbin|/usr/etc|/sbin|/usr/afsws/bin|/usr/ucb) ;;
# Account for people who put trailing slashes in PATH elements.
case "$ac_dir/" in
/|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
*)
# OSF1 and SCO ODT 3.0 have their own names for install.
for ac_prog in ginstall installbsd scoinst install; do
@ -1214,25 +1218,25 @@ else
fi
INSTALL="$ijg_cv_path_install"
fi
echo "$ac_t""$INSTALL" 1>&4
echo "$ac_t""$INSTALL" 1>&6
# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
# It thinks the first close brace ends the variable substitution.
test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='$(INSTALL)'
test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
if test -z "$INSTALL_DATA"; then
if test "$INSTALL" = cp; then
INSTALL_DATA='$(INSTALL)'
INSTALL_DATA='${INSTALL}'
else
INSTALL_DATA='$(INSTALL) -m 644'
INSTALL_DATA='${INSTALL} -m 644'
fi
fi
# Extract the first word of "ranlib", so it can be a program name with args.
set dummy ranlib; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&4
if eval "test \"`echo '${'ac_cv_prog_RANLIB'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
if test -n "$RANLIB"; then
ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
@ -1251,9 +1255,9 @@ fi
fi
RANLIB="$ac_cv_prog_RANLIB"
if test -n "$RANLIB"; then
echo "$ac_t""$RANLIB" 1>&4
echo "$ac_t""$RANLIB" 1>&6
else
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
fi
MEMORYMGR="jmemnobs.o"
@ -1283,9 +1287,9 @@ cat >> confdefs.h <<EOF
#define DEFAULT_MAX_MEM ${DEFAULTMAXMEM}
EOF
echo $ac_n "checking for 'tmpfile()'""... $ac_c" 1>&4
echo $ac_n "checking for 'tmpfile()'""... $ac_c" 1>&6
cat > conftest.$ac_ext <<EOF
#line 1289 "configure"
#line 1293 "configure"
#include "confdefs.h"
#include <stdio.h>
int main() { return 0; }
@ -1295,18 +1299,18 @@ int t() {
EOF
if eval $ac_link; then
rm -rf conftest*
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
MEMORYMGR="jmemansi.o"
else
rm -rf conftest*
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
MEMORYMGR="jmemname.o"
cat >> confdefs.h <<\EOF
#define NEED_SIGNAL_CATCHER
EOF
echo $ac_n "checking for 'mktemp()'""... $ac_c" 1>&4
echo $ac_n "checking for 'mktemp()'""... $ac_c" 1>&6
cat > conftest.$ac_ext <<EOF
#line 1310 "configure"
#line 1314 "configure"
#include "confdefs.h"
int main() { return 0; }
@ -1316,10 +1320,10 @@ int t() {
EOF
if eval $ac_link; then
rm -rf conftest*
echo "$ac_t""yes" 1>&4
echo "$ac_t""yes" 1>&6
else
rm -rf conftest*
echo "$ac_t""no" 1>&4
echo "$ac_t""no" 1>&6
cat >> confdefs.h <<\EOF
#define NO_MKTEMP
EOF
@ -1354,7 +1358,7 @@ else
fi
trap '' 1 2 15
trap 'rm -fr conftest* confdefs* core $ac_clean_files; exit 1' 1 2 15
trap 'rm -fr conftest* confdefs* core core.* *.core $ac_clean_files; exit 1' 1 2 15
test "x$prefix" = xNONE && prefix=$ac_default_prefix
# Let make expand exec_prefix.
@ -1377,7 +1381,7 @@ DEFS=-DHAVE_CONFIG_H
echo creating $CONFIG_STATUS
rm -f $CONFIG_STATUS
cat > $CONFIG_STATUS <<EOF
#!/bin/sh
#! /bin/sh
# Generated automatically by configure.
# Run this file to recreate the current configuration.
# This directory was configured as follows,
@ -1396,7 +1400,7 @@ do
echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
-version | --version | --versio | --versi | --vers | --ver | --ve | --v)
echo "$CONFIG_STATUS generated by autoconf version 2.1"
echo "$CONFIG_STATUS generated by autoconf version 2.4"
exit 0 ;;
-help | --help | --hel | --he | --h)
echo "\$ac_cs_usage"; exit 0 ;;
@ -1406,7 +1410,7 @@ done
ac_given_srcdir=$srcdir
trap 'rm -fr Makefile:makefile.cfg jconfig.h:jconfig.cfg conftest*; exit 1' 1 2 15
trap 'rm -fr `echo "Makefile:makefile.cfg jconfig.h:jconfig.cfg" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15
# Protect against being on the right side of a sed subst in config.status.
sed 's/%@/@@/; s/@%/@@/; s/%g$/@g/; /@g$/s/[\\\\&%]/\\\\&/g;
@ -1456,7 +1460,7 @@ for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then
if test "$ac_dir" != "$ac_file" && test "$ac_dir" != .; then
# The file is in a subdirectory.
test ! -d "$ac_dir" && mkdir "$ac_dir"
ac_dir_suffix="/$ac_dir"
ac_dir_suffix="/`echo $ac_dir|sed 's%^\./%%'`"
# A "../" for each directory in $ac_dir_suffix.
ac_dots=`echo $ac_dir_suffix|sed 's%/[^/]*%../%g'`
else
@ -1590,5 +1594,5 @@ exit 0
EOF
chmod +x $CONFIG_STATUS
rm -fr confdefs* $ac_clean_files
test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS
test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1

3
djpeg.1
View File

@ -1,4 +1,4 @@
.TH DJPEG 1 "12 December 1994"
.TH DJPEG 1 "15 June 1995"
.SH NAME
djpeg \- decompress a JPEG file to an image file
.SH SYNOPSIS
@ -231,6 +231,7 @@ itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR cjpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br

165
djpeg.c
View File

@ -1,7 +1,7 @@
/*
* djpeg.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -26,15 +26,7 @@
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#include <ctype.h> /* to declare isupper(),tolower(),isprint() */
#ifdef NEED_SIGNAL_CATCHER
#include <signal.h> /* to declare signal() */
#endif
#ifdef USE_SETMODE
#include <fcntl.h> /* to declare setmode()'s parameter macros */
/* If you have setmode() but not <io.h>, just delete this line: */
#include <io.h> /* to declare setmode() */
#endif
#include <ctype.h> /* to declare isprint() */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
@ -45,32 +37,6 @@
#endif
#endif
#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
#define READ_BINARY "r"
#define WRITE_BINARY "w"
#else
#define READ_BINARY "rb"
#define WRITE_BINARY "wb"
#endif
#ifndef EXIT_FAILURE /* define exit() codes if not provided */
#define EXIT_FAILURE 1
#endif
#ifndef EXIT_SUCCESS
#ifdef VMS
#define EXIT_SUCCESS 1 /* VMS is very nonstandard */
#else
#define EXIT_SUCCESS 0
#endif
#endif
#ifndef EXIT_WARNING
#ifdef VMS
#define EXIT_WARNING 1 /* VMS is very nonstandard */
#else
#define EXIT_WARNING 2
#endif
#endif
/* Create the add-on message string table. */
@ -106,59 +72,6 @@ typedef enum {
static IMAGE_FORMATS requested_fmt;
/*
* Signal catcher to ensure that temporary files are removed before aborting.
* NB: for Amiga Manx C this is actually a global routine named _abort();
* we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus...
*/
#ifdef NEED_SIGNAL_CATCHER
static j_common_ptr sig_cinfo;
GLOBAL void
signal_catcher (int signum)
{
if (sig_cinfo != NULL) {
if (sig_cinfo->err != NULL) /* turn off trace output */
sig_cinfo->err->trace_level = 0;
jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */
}
exit(EXIT_FAILURE);
}
#endif
/*
* Optional routine to display a percent-done figure on stderr.
*/
#ifdef PROGRESS_REPORT
METHODDEF void
progress_monitor (j_common_ptr cinfo)
{
cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress;
int total_passes = prog->pub.total_passes + prog->total_extra_passes;
int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
if (percent_done != prog->percent_done) {
prog->percent_done = percent_done;
if (total_passes > 1) {
fprintf(stderr, "\rPass %d/%d: %3d%% ",
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
} else {
fprintf(stderr, "\r %3d%% ", percent_done);
}
fflush(stderr);
}
}
#endif
/*
* Argument-parsing code.
* The switch parser is designed to be useful with DOS-style command line
@ -244,31 +157,6 @@ usage (void)
}
LOCAL boolean
keymatch (char * arg, const char * keyword, int minchars)
/* Case-insensitive matching of (possibly abbreviated) keyword switches. */
/* keyword is the constant keyword (must be lower case already), */
/* minchars is length of minimum legal abbreviation. */
{
register int ca, ck;
register int nmatched = 0;
while ((ca = *arg++) != '\0') {
if ((ck = *keyword++) == '\0')
return FALSE; /* arg longer than keyword, no good */
if (isupper(ca)) /* force arg to lcase (assume ck is already) */
ca = tolower(ca);
if (ca != ck)
return FALSE; /* no good */
nmatched++; /* count matched characters */
}
/* reached end of argument; fail if it's too short for unique abbrev */
if (nmatched < minchars)
return FALSE;
return TRUE; /* A-OK */
}
LOCAL int
parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
@ -561,11 +449,7 @@ main (int argc, char **argv)
/* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
sig_cinfo = (j_common_ptr) &cinfo;
signal(SIGINT, signal_catcher);
#ifdef SIGTERM /* not all systems have SIGTERM */
signal(SIGTERM, signal_catcher);
#endif
enable_signal_catcher((j_common_ptr) &cinfo);
#endif
/* Scan command line to find file names. */
@ -610,17 +494,7 @@ main (int argc, char **argv)
}
} else {
/* default input file is stdin */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdin), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open stdin\n", progname);
exit(EXIT_FAILURE);
}
#else
input_file = stdin;
#endif
input_file = read_stdin();
}
/* Open the output file. */
@ -631,28 +505,11 @@ main (int argc, char **argv)
}
} else {
/* default output file is stdout */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdout), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open stdout\n", progname);
exit(EXIT_FAILURE);
}
#else
output_file = stdout;
#endif
output_file = write_stdout();
}
#ifdef PROGRESS_REPORT
/* Enable progress display, unless trace output is on */
if (jerr.trace_level == 0) {
progress.pub.progress_monitor = progress_monitor;
progress.completed_extra_passes = 0;
progress.total_extra_passes = 0;
progress.percent_done = -1;
cinfo.progress = &progress.pub;
}
start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif
/* Specify data source for decompression */
@ -703,7 +560,7 @@ main (int argc, char **argv)
dest_mgr->output_file = output_file;
/* Start decompressor */
jpeg_start_decompress(&cinfo);
(void) jpeg_start_decompress(&cinfo);
/* Write output file header */
(*dest_mgr->start_output) (&cinfo, dest_mgr);
@ -727,7 +584,7 @@ main (int argc, char **argv)
* of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
*/
(*dest_mgr->finish_output) (&cinfo, dest_mgr);
jpeg_finish_decompress(&cinfo);
(void) jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
/* Close files, if we opened them */
@ -737,11 +594,7 @@ main (int argc, char **argv)
fclose(output_file);
#ifdef PROGRESS_REPORT
/* Clear away progress display */
if (jerr.trace_level == 0) {
fprintf(stderr, "\r \r");
fflush(stderr);
}
end_progress_monitor((j_common_ptr) &cinfo);
#endif
/* All done. */

15
example.c
View File

@ -154,6 +154,10 @@ write_JPEG_file (char * filename, int quality)
row_stride = image_width * 3; /* JSAMPLEs per row in image_buffer */
while (cinfo.next_scanline < cinfo.image_height) {
/* jpeg_write_scanlines expects an array of pointers to scanlines.
* Here the array is only one element long, but you could pass
* more than one scanline at a time if that's more convenient.
*/
row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride];
(void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
}
@ -188,7 +192,7 @@ write_JPEG_file (char * filename, int quality)
* (If you don't know what that's for, you don't need it.)
*
* If the compressor requires full-image buffers (for entropy-coding
* optimization or a noninterleaved JPEG file), it will create temporary
* optimization or a multi-scan JPEG file), it will create temporary
* files for anything that doesn't fit within the maximum-memory setting.
* (Note that temp files are NOT needed if you use the default parameters.)
* On some systems you may need to set up a signal handler to ensure that
@ -342,7 +346,10 @@ read_JPEG_file (char * filename)
/* Step 5: Start decompressor */
jpeg_start_decompress(&cinfo);
(void) jpeg_start_decompress(&cinfo);
/* We can ignore the return value since suspension is not possible
* with the stdio data source.
*/
/* We may need to do some setup of our own at this point before reading
* the data. After jpeg_start_decompress() we have the correct scaled
@ -363,6 +370,10 @@ read_JPEG_file (char * filename)
* loop counter, so that we don't have to keep track ourselves.
*/
while (cinfo.output_scanline < cinfo.output_height) {
/* jpeg_read_scanlines expects an array of pointers to scanlines.
* Here the array is only one element long, but you could ask for
* more than one scanline at a time if that's more convenient.
*/
(void) jpeg_read_scanlines(&cinfo, buffer, 1);
/* Assume put_scanline_someplace wants a pointer and sample count. */
put_scanline_someplace(buffer[0], row_stride);

45
filelist.doc
View File

@ -1,6 +1,6 @@
IJG JPEG LIBRARY: FILE LIST
Copyright (C) 1994, Thomas G. Lane.
Copyright (C) 1994-1995, Thomas G. Lane.
This file is part of the Independent JPEG Group's software.
For conditions of distribution and use, see the accompanying README file.
@ -8,8 +8,10 @@ For conditions of distribution and use, see the accompanying README file.
Here is a road map to the files in the IJG JPEG distribution. The
distribution includes the JPEG library proper, plus two application
programs ("cjpeg" and "djpeg") which use the library to convert JPEG
files to and from some other popular image formats. There are also
two stand-alone applications, "rdjpgcom" and "wrjpgcom".
files to and from some other popular image formats. A third application
"jpegtran" uses the library to do lossless conversion between different
variants of JPEG. There are also two stand-alone applications,
"rdjpgcom" and "wrjpgcom".
THE JPEG LIBRARY
@ -23,8 +25,11 @@ jconfig.h Configuration declarations. Note: this file is not present
jmorecfg.h Additional configuration declarations; need not be changed
for a standard installation.
jerror.h Declares JPEG library's error and trace message codes.
jinclude.h Central include file used by library's .c files.
jinclude.h Central include file used by all IJG .c files to reference
system include files.
jpegint.h JPEG library's internal data structures.
jchuff.h Private declarations for Huffman encoder modules.
jdhuff.h Private declarations for Huffman decoder modules.
jdct.h Private declarations for forward & reverse DCT subsystems.
jmemsys.h Private declarations for memory management subsystem.
jversion.h Version information.
@ -33,7 +38,7 @@ Applications using the library should include jpeglib.h (which in turn
includes jconfig.h and jmorecfg.h). Optionally, jerror.h may be included
if the application needs to reference individual JPEG error codes. The
other include files are intended for internal use and would not normally
be included by an application program. (cjpeg/djpeg do use jinclude.h,
be included by an application program. (cjpeg/djpeg/etc do use jinclude.h,
since its function is to improve portability of the whole IJG distribution.
Most other applications will directly include the system include files they
want, and hence won't need jinclude.h.)
@ -44,15 +49,20 @@ C source code files:
These files contain most of the functions intended to be called directly by
an application program:
jcapi.c Application program interface routines for compression.
jdapi.c Application program interface routines for decompression.
jcapimin.c Application program interface: core routines for compression.
jcapistd.c Application program interface: standard compression.
jdapimin.c Application program interface: core routines for decompression.
jdapistd.c Application program interface: standard decompression.
jcomapi.c Application program interface routines common to compression
and decompression.
jcparam.c Compression parameter setting helper routines.
jctrans.c API and library routines for transcoding compression.
jdtrans.c API and library routines for transcoding decompression.
Compression side of the library:
jcmaster.c Master control: determines which other modules to use.
jcinit.c Initialization: determines which other modules to use.
jcmaster.c Master control: setup and inter-pass sequencing logic.
jcmainct.c Main buffer controller (preprocessor => JPEG compressor).
jcprepct.c Preprocessor buffer controller.
jccoefct.c Buffer controller for DCT coefficient buffer.
@ -62,18 +72,21 @@ jcdctmgr.c DCT manager (DCT implementation selection & control).
jfdctint.c Forward DCT using slow-but-accurate integer method.
jfdctfst.c Forward DCT using faster, less accurate integer method.
jfdctflt.c Forward DCT using floating-point arithmetic.
jchuff.c Huffman entropy coding.
jchuff.c Huffman entropy coding for sequential JPEG.
jcphuff.c Huffman entropy coding for progressive JPEG.
jcmarker.c JPEG marker writing.
jdatadst.c Data destination manager for stdio output.
Decompression side of the library:
jdmaster.c Master control: determines which other modules to use.
jdinput.c Input controller: controls input processing modules.
jdmainct.c Main buffer controller (JPEG decompressor => postprocessor).
jdcoefct.c Buffer controller for DCT coefficient buffer.
jdpostct.c Postprocessor buffer controller.
jdmarker.c JPEG marker reading.
jdhuff.c Huffman entropy decoding.
jdhuff.c Huffman entropy decoding for sequential JPEG.
jdphuff.c Huffman entropy decoding for progressive JPEG.
jddctmgr.c IDCT manager (IDCT implementation selection & control).
jidctint.c Inverse DCT using slow-but-accurate integer method.
jidctfst.c Inverse DCT using faster, less accurate integer method.
@ -115,8 +128,8 @@ jmemdosa.asm 80x86 assembly code support for jmemdos.c; used only in
MS-DOS-specific configurations of the JPEG library.
CJPEG/DJPEG
===========
CJPEG/DJPEG/JPEGTRAN
====================
Include files:
@ -127,7 +140,11 @@ C source code files:
cjpeg.c Main program for cjpeg.
djpeg.c Main program for djpeg.
rdcolmap.c Code to read a colormap file for djpeg's "-map" option.
jpegtran.c Main program for jpegtran.
cdjpeg.c Utility routines used by all three programs.
rdcolmap.c Code to read a colormap file for djpeg's "-map" switch.
rdswitch.c Code to process some of cjpeg's more complex switches.
Also used by jpegtran.
Image file reader modules for cjpeg:
@ -155,7 +172,7 @@ rdjpgcom.c Stand-alone rdjpgcom application.
wrjpgcom.c Stand-alone wrjpgcom application.
These programs do not depend on the IJG library. They do use
jconfig.h and jinclude.h, simply to improve portability.
jconfig.h and jinclude.h, only to improve portability.
ADDITIONAL FILES

162
install.doc
View File

@ -135,12 +135,13 @@ mak*jpeg.st jconfig.st Atari ST/STE/TT, Pure C or Turbo C
makefile.bcc jconfig.bcc MS-DOS or OS/2, Borland C
makefile.dj jconfig.dj MS-DOS, DJGPP (Delorie's port of GNU C)
makefile.mc6 jconfig.mc6 MS-DOS, Microsoft C version 6.x and up
makefile.wat jconfig.wat MS-DOS, OS/2, or Windows NT, Watcom C
makefile.mms jconfig.vms Digital VMS, with MMS software
makefile.vms jconfig.vms Digital VMS, without MMS software
Copy the proper jconfig file to jconfig.h and the makefile to Makefile
(or whatever your system uses as the standard makefile name). For the
Atari, we provide three project files; see the Atari hints below.
Atari, we provide four project files; see the Atari hints below.
Configuring the software by hand
@ -176,14 +177,14 @@ ckconfig.c to work, make sure the same switches are in CFLAGS.
If you are on a system that doesn't use makefiles, you'll need to set up
project files (or whatever you do use) to compile all the source files and
link them into executable files cjpeg, djpeg, rdjpgcom, and wrjpgcom. See
the file lists in any of the makefiles to find out which files go into each
program. Note that the provided makefiles all make a "library" file libjpeg
first, but you don't have to do that if you don't want to; the file lists
identify which source files are actually needed for compression,
link them into executable files cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom.
See the file lists in any of the makefiles to find out which files go into
each program. Note that the provided makefiles all make a "library" file
libjpeg first, but you don't have to do that if you don't want to; the file
lists identify which source files are actually needed for compression,
decompression, or both. As a last resort, you can make a batch script that
just compiles everything and links it all together; makefile.vms is an
example of this (it's for VMS systems that have no make-like utility).
just compiles everything and links it all together; makefile.vms is an example
of this (it's for VMS systems that have no make-like utility).
Here are comments about some specific configuration decisions you'll
need to make:
@ -191,7 +192,7 @@ need to make:
Command line style
------------------
cjpeg and djpeg can use a Unix-like command line style which supports
These programs can use a Unix-like command line style which supports
redirection and piping, like this:
cjpeg inputfile >outputfile
cjpeg <inputfile >outputfile
@ -301,17 +302,19 @@ several forms:
testimg.ppm The output of djpeg testorig.jpg
testimg.gif The output of djpeg -gif testorig.jpg
testimg.jpg The output of cjpeg testimg.ppm
(The two .jpg files aren't identical since JPEG is lossy.) If you can
generate duplicates of the testimg.* files then you probably have working
programs.
testprog.jpg Progressive-mode equivalent of testorig.jpg.
testimgp.jpg The output of cjpeg -progressive -optimize testimg.ppm
(The first- and second-generation .jpg files aren't identical since JPEG is
lossy.) If you can generate duplicates of the testimg* files then you
probably have working programs.
With most of the makefiles, "make test" will perform the necessary
comparisons.
If you're using a makefile that doesn't provide the test option, run djpeg
and cjpeg by hand to generate testout.ppm, testout.gif, and testout.jpg,
then compare these to testimg.* with whatever binary file comparison tool
you have. The files should be bit-for-bit identical.
and cjpeg by hand and compare the output files to testimg* with whatever
binary file comparison tool you have. The files should be bit-for-bit
identical.
If the programs complain "MAX_ALLOC_CHUNK is wrong, please fix", then you
need to reduce MAX_ALLOC_CHUNK to a value that fits in type size_t.
@ -329,9 +332,8 @@ it's a good idea to check that binary I/O through stdin/stdout actually
works. You should get the same results from "djpeg <testorig.jpg >out.ppm"
as from "djpeg -outfile out.ppm testorig.jpg". Note that the makefiles all
use the latter style and therefore do not exercise stdin/stdout! If this
check fails, try recompiling cjpeg.c and djpeg.c with USE_SETMODE or
USE_FDOPEN. If it still doesn't work, better use two-file style.
(rdjpgcom.c and wrjpgcom.c will also need to be recompiled.)
check fails, try recompiling with USE_SETMODE or USE_FDOPEN defined.
If it still doesn't work, better use two-file style.
If you chose a memory manager other than jmemnobs.c, you should test that
temporary-file usage works. Try "djpeg -gif -max 0 testorig.jpg" and make
@ -349,11 +351,12 @@ INSTALLING THE SOFTWARE
=======================
Once you're done with the above steps, you can install the software by
copying the executable files (cjpeg, djpeg, rdjpgcom, and wrjpgcom) to
wherever you normally install programs. On Unix systems, you'll also want
to put the man pages (cjpeg.1, djpeg.1, rdjpgcom.1, wrjpgcom.1) in the
man-page directory. The canned makefiles don't support this step since
there's such a wide variety of installation procedures on different systems.
copying the executable files (cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom)
to wherever you normally install programs. On Unix systems, you'll also want
to put the man pages (cjpeg.1, djpeg.1, jpegtran.1, rdjpgcom.1, wrjpgcom.1)
in the man-page directory. The canned makefiles don't support this step
since there's such a wide variety of installation procedures on different
systems.
If you generated a Makefile with the "configure" script, you can just say
make install
@ -365,7 +368,7 @@ the Makefile, particularly if your system's conventions for man page
filenames don't match what configure expects.
If you want to install the library file libjpeg.a and the include files j*.h
(for use in compiling other programs besides cjpeg/djpeg), then say
(for use in compiling other programs besides the IJG ones), then say
make install-lib
@ -375,9 +378,9 @@ OPTIONAL STUFF
Progress monitor:
If you like, you can #define PROGRESS_REPORT (in jconfig.h) to enable display
of percent-done progress reports. The routines provided in cjpeg.c/djpeg.c
merely print percentages to stderr, but you can customize them to do
something fancier.
of percent-done progress reports. The routine provided in cdjpeg.c merely
prints percentages to stderr, but you can customize it to do something
fancier.
Utah RLE file format support:
@ -478,9 +481,9 @@ defining SHORTxSHORT_32 is fairly likely to work. When experimenting with
alternate definitions, be sure to test not only whether the code still works
(use the self-test), but also whether it is actually faster --- on some
compilers, alternate definitions may compute the right answer, yet be slower
than the default. Timing cjpeg on a large PPM input file is the best way to
check this, as the DCT will be the largest fraction of the runtime in that
mode. (Note: some of the distributed compiler-specific jconfig files
than the default. Timing cjpeg on a large PGM (grayscale) input file is the
best way to check this, as the DCT will be the largest fraction of the runtime
in that mode. (Note: some of the distributed compiler-specific jconfig files
already contain #define switches to select appropriate MULTIPLYxxx
definitions.)
@ -559,14 +562,14 @@ manager, with temporary files being created on the device named by
Atari ST/STE/TT:
Copy the project files makcjpeg.st, makdjpeg.st, and makljpeg.st to cjpeg.prj,
djpeg.prj, and libjpeg.prj respectively. The project files should work as-is
with Pure C. For Turbo C, change library filenames "PC..." to "TC..." in
cjpeg.prj and djpeg.prj. Note that libjpeg.prj selects jmemansi.c as the
recommended memory manager. You'll probably want to adjust the
DEFAULT_MAX_MEM setting --- you want it to be a couple hundred K less than
your normal free memory. Put "#define DEFAULT_MAX_MEM nnnn" into jconfig.h
to do this.
Copy the project files makcjpeg.st, makdjpeg.st, maktjpeg.st, and makljpeg.st
to cjpeg.prj, djpeg.prj, jpegtran.prj, and libjpeg.prj respectively. The
project files should work as-is with Pure C. For Turbo C, change library
filenames "PC..." to "TC..." in each project file. Note that libjpeg.prj
selects jmemansi.c as the recommended memory manager. You'll probably want to
adjust the DEFAULT_MAX_MEM setting --- you want it to be a couple hundred K
less than your normal free memory. Put "#define DEFAULT_MAX_MEM nnnn" into
jconfig.h to do this.
To use the 68881/68882 coprocessor for the floating point DCT, add the
compiler option "-8" to the project files and replace PCFLTLIB.LIB with
@ -576,8 +579,8 @@ DCT_FLOAT_SUPPORTED in jmorecfg.h (since without a coprocessor, the float
code will be too slow to be useful). In that case, you can delete
PCFLTLIB.LIB from the project files.
Note that you must make libjpeg.lib before making cjpeg.ttp or djpeg.ttp.
You'll have to perform the self-test by hand.
Note that you must make libjpeg.lib before making cjpeg.ttp, djpeg.ttp,
or jpegtran.ttp. You'll have to perform the self-test by hand.
We haven't bothered to include project files for rdjpgcom and wrjpgcom.
Those source files should just be compiled by themselves; they don't
@ -587,9 +590,9 @@ There is a bug in some older versions of the Turbo C library which causes the
space used by temporary files created with "tmpfile()" not to be freed after
an abnormal program exit. If you check your disk afterwards, you will find
cluster chains that are allocated but not used by a file. This should not
happen in cjpeg or djpeg, since we enable a signal catcher to explicitly close
temp files before exiting. But if you use the JPEG library with your own
code, be sure to supply a signal catcher, or else use a different
happen in cjpeg/djpeg/jpegtran, since we enable a signal catcher to explicitly
close temp files before exiting. But if you use the JPEG library with your
own code, be sure to supply a signal catcher, or else use a different
system-dependent memory manager.
@ -697,7 +700,8 @@ The DOS-specific memory manager, jmemdos.c, should be used if possible.
It needs some assembly-code routines which are in jmemdosa.asm; make sure
your makefile assembles that file and includes it in the library. If you
don't have a suitable assembler, you can get pre-assembled object files for
jmemdosa by FTP from ftp.uu.net: graphics/jpeg/jdosaobj.zip.
jmemdosa by FTP from ftp.uu.net: graphics/jpeg/jdosaobj.zip. (DOS-oriented
distributions of the IJG source code often include these object files.)
When using jmemdos.c, jconfig.h must define USE_MSDOS_MEMMGR and must set
MAX_ALLOC_CHUNK to less than 64K (65520L is a typical value). If your
@ -742,13 +746,15 @@ See the last paragraph of the previous section.
MS-DOS, Borland C:
If you want one-file command line style, just undefine TWO_FILE_COMMANDLINE.
jconfig.bcc includes #define USE_SETMODE. (fdopen does not work correctly.)
Be sure to convert all the source files to DOS text format (CR/LF newlines).
Although Borland C will often work OK with unmodified Unix (LF newlines)
source files, sometimes it will give bogus compile errors.
"Illegal character '#'" is the most common such error.
"Illegal character '#'" is the most common such error. (This is true with
Borland C 3.1, but perhaps is fixed in newer releases.)
If you want one-file command line style, just undefine TWO_FILE_COMMANDLINE.
jconfig.bcc already includes #define USE_SETMODE to make this work.
(fdopen does not work correctly.)
MS-DOS, DJGPP:
@ -765,7 +771,8 @@ go32.exe to do "make standalone".
MS-DOS, Microsoft C:
If you want one-file command line style, just undefine TWO_FILE_COMMANDLINE.
jconfig.mc6 includes #define USE_SETMODE. (fdopen does not work correctly.)
jconfig.mc6 already includes #define USE_SETMODE to make this work.
(fdopen does not work correctly.)
Old versions of MS C fail with an "out of macro expansion space" error
because they can't cope with the macro TRACEMS8 (defined in jerror.h).
@ -781,6 +788,53 @@ MS C 8.0 reportedly fails to compile jquant1.c if optimization is turned off
(yes, off).
Microsoft Windows (all versions):
Some Windows system include files define typedef boolean as "unsigned char".
The IJG code also defines typedef boolean, but we make it "int" by default.
This doesn't affect the IJG programs because we don't import those Windows
include files. But if you use the JPEG library in your own program, and some
of your program's files import one definition of boolean while some import the
other, you can get all sorts of mysterious problems. A good preventive step
is to change jmorecfg.h to define boolean as unsigned char. We recommend
making that part of jmorecfg.h read like this:
#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */
typedef unsigned char boolean;
#endif
Many people want to convert the IJG library into a DLL. This is reasonably
straightforward, but watch out for the following:
1. Don't try to compile as a DLL in small or medium memory model; use
large model, or even better, 32-bit flat model. Many places in the IJG code
assume the address of a local variable is an ordinary (not FAR) pointer;
that isn't true in a medium-model DLL.
2. Microsoft C cannot pass file pointers between applications and DLLs.
(See Microsoft Knowledge Base, PSS ID Number Q50336.) So jdatasrc.c and
jdatadst.c don't work if you open a file in your application and then pass
the pointer to the DLL. One workaround is to make jdatasrc.c/jdatadst.c
part of your main application rather than part of the DLL.
The unmodified IJG library presents a very C-specific application interface,
so the resulting DLL is only usable from C or C++ applications. There has
been some talk of writing wrapper code that would present a simpler interface
usable from other languages, such as Visual Basic. This is on our to-do list
but hasn't been very high priority --- any volunteers out there?
Microsoft Windows, Borland C:
Borland C++ 4.5 fails with an internal compiler error when trying to compile
jdmerge.c. If enough people complain, perhaps Borland will fix it.
In the meantime, you can work around the problem by undefining
UPSAMPLE_MERGING_SUPPORTED in jmorecfg.h, at the price of losing most of the
speedup from the "-nosmooth" decompression option. Alternatively, I'm told
that replacing three or more uses of h2v1_merged_upsample()'s variable
"range_limit" with direct references to "cinfo->sample_range_limit" makes
the problem go away, though the routine is then a little slower than it
should be. Pretty bizarre, especially since the very similar routine
h2v2_merged_upsample doesn't trigger the bug.
SGI:
Set "AR2= ar -ts" rather than "AR2= ranlib" in the Makefile. If you are
@ -800,8 +854,8 @@ On an Alpha/VMS system with MMS, be sure to use the "/Marco=Alpha=1"
qualifier with MMS when building the JPEG package.
VAX/VMS v5.5-1 may have problems with the test step of the build procedure
reporting differences when it compares the original and test GIF and JPG
images. If the error points to the last block of the files, it is most
likely bogus and may be safely ignored. It seems to be because the files
are Stream_LF and Backup/Compare has difficulty with the (presumably) null
padded files. This problem was not observed on VAX/VMS v6.1 or AXP/VMS v6.1.
reporting differences when it compares the original and test images. If the
error points to the last block of the files, it is most likely bogus and may
be safely ignored. It seems to be because the files are Stream_LF and
Backup/Compare has difficulty with the (presumably) null padded files.
This problem was not observed on VAX/VMS v6.1 or AXP/VMS v6.1.

200
jcapi.c → jcapimin.c
View File

@ -1,15 +1,19 @@
/*
* jcapi.c
* jcapimin.c
*
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains application interface code for the compression half of
* the JPEG library. Most of the routines intended to be called directly by
* an application are in this file. But also see jcparam.c for
* parameter-setup helper routines, and jcomapi.c for routines shared by
* compression and decompression.
* This file contains application interface code for the compression half
* of the JPEG library. These are the "minimum" API routines that may be
* needed in either the normal full-compression case or the transcoding-only
* case.
*
* Most of the routines intended to be called directly by an application
* are in this file or in jcapistd.c. But also see jcparam.c for
* parameter-setup helper routines, jcomapi.c for routines shared by
* compression and decompression, and jctrans.c for the transcoding case.
*/
#define JPEG_INTERNALS
@ -72,6 +76,18 @@ jpeg_destroy_compress (j_compress_ptr cinfo)
}
/*
* Abort processing of a JPEG compression operation,
* but don't destroy the object itself.
*/
GLOBAL void
jpeg_abort_compress (j_compress_ptr cinfo)
{
jpeg_abort((j_common_ptr) cinfo); /* use common routine */
}
/*
* Forcibly suppress or un-suppress all quantization and Huffman tables.
* Marks all currently defined tables as already written (if suppress)
@ -105,148 +121,6 @@ jpeg_suppress_tables (j_compress_ptr cinfo, boolean suppress)
}
/*
* Compression initialization.
* Before calling this, all parameters and a data destination must be set up.
*
* We require a write_all_tables parameter as a failsafe check when writing
* multiple datastreams from the same compression object. Since prior runs
* will have left all the tables marked sent_table=TRUE, a subsequent run
* would emit an abbreviated stream (no tables) by default. This may be what
* is wanted, but for safety's sake it should not be the default behavior:
* programmers should have to make a deliberate choice to emit abbreviated
* images. Therefore the documentation and examples should encourage people
* to pass write_all_tables=TRUE; then it will take active thought to do the
* wrong thing.
*/
GLOBAL void
jpeg_start_compress (j_compress_ptr cinfo, boolean write_all_tables)
{
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (write_all_tables)
jpeg_suppress_tables(cinfo, FALSE); /* mark all tables to be written */
/* (Re)initialize error mgr and destination modules */
(*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
(*cinfo->dest->init_destination) (cinfo);
/* Perform master selection of active modules */
jinit_master_compress(cinfo);
/* Set up for the first pass */
(*cinfo->master->prepare_for_pass) (cinfo);
/* Ready for application to drive first pass through jpeg_write_scanlines
* or jpeg_write_raw_data.
*/
cinfo->next_scanline = 0;
cinfo->global_state = (cinfo->raw_data_in ? CSTATE_RAW_OK : CSTATE_SCANNING);
}
/*
* Write some scanlines of data to the JPEG compressor.
*
* The return value will be the number of lines actually written.
* This should be less than the supplied num_lines only in case that
* the data destination module has requested suspension of the compressor,
* or if more than image_height scanlines are passed in.
*
* Note: we warn about excess calls to jpeg_write_scanlines() since
* this likely signals an application programmer error. However,
* excess scanlines passed in the last valid call are *silently* ignored,
* so that the application need not adjust num_lines for end-of-image
* when using a multiple-scanline buffer.
*/
GLOBAL JDIMENSION
jpeg_write_scanlines (j_compress_ptr cinfo, JSAMPARRAY scanlines,
JDIMENSION num_lines)
{
JDIMENSION row_ctr, rows_left;
if (cinfo->global_state != CSTATE_SCANNING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->next_scanline >= cinfo->image_height)
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->next_scanline;
cinfo->progress->pass_limit = (long) cinfo->image_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Give master control module another chance if this is first call to
* jpeg_write_scanlines. This lets output of the frame/scan headers be
* delayed so that application can write COM, etc, markers between
* jpeg_start_compress and jpeg_write_scanlines.
*/
if (cinfo->master->call_pass_startup)
(*cinfo->master->pass_startup) (cinfo);
/* Ignore any extra scanlines at bottom of image. */
rows_left = cinfo->image_height - cinfo->next_scanline;
if (num_lines > rows_left)
num_lines = rows_left;
row_ctr = 0;
(*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, num_lines);
cinfo->next_scanline += row_ctr;
return row_ctr;
}
/*
* Alternate entry point to write raw data.
* Processes exactly one iMCU row per call, unless suspended.
*/
GLOBAL JDIMENSION
jpeg_write_raw_data (j_compress_ptr cinfo, JSAMPIMAGE data,
JDIMENSION num_lines)
{
JDIMENSION lines_per_iMCU_row;
if (cinfo->global_state != CSTATE_RAW_OK)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->next_scanline >= cinfo->image_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->next_scanline;
cinfo->progress->pass_limit = (long) cinfo->image_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Give master control module another chance if this is first call to
* jpeg_write_raw_data. This lets output of the frame/scan headers be
* delayed so that application can write COM, etc, markers between
* jpeg_start_compress and jpeg_write_raw_data.
*/
if (cinfo->master->call_pass_startup)
(*cinfo->master->pass_startup) (cinfo);
/* Verify that at least one iMCU row has been passed. */
lines_per_iMCU_row = cinfo->max_v_samp_factor * DCTSIZE;
if (num_lines < lines_per_iMCU_row)
ERREXIT(cinfo, JERR_BUFFER_SIZE);
/* Directly compress the row. */
if (! (*cinfo->coef->compress_data) (cinfo, data)) {
/* If compressor did not consume the whole row, suspend processing. */
return 0;
}
/* OK, we processed one iMCU row. */
cinfo->next_scanline += lines_per_iMCU_row;
return lines_per_iMCU_row;
}
/*
* Finish JPEG compression.
*
@ -259,13 +133,14 @@ jpeg_finish_compress (j_compress_ptr cinfo)
{
JDIMENSION iMCU_row;
if (cinfo->global_state != CSTATE_SCANNING &&
cinfo->global_state != CSTATE_RAW_OK)
if (cinfo->global_state == CSTATE_SCANNING ||
cinfo->global_state == CSTATE_RAW_OK) {
/* Terminate first pass */
if (cinfo->next_scanline < cinfo->image_height)
ERREXIT(cinfo, JERR_TOO_LITTLE_DATA);
(*cinfo->master->finish_pass) (cinfo);
} else if (cinfo->global_state != CSTATE_WRCOEFS)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->next_scanline < cinfo->image_height)
ERREXIT(cinfo, JERR_TOO_LITTLE_DATA);
/* Terminate first pass */
(*cinfo->master->finish_pass) (cinfo);
/* Perform any remaining passes */
while (! cinfo->master->is_last_pass) {
(*cinfo->master->prepare_for_pass) (cinfo);
@ -304,7 +179,8 @@ jpeg_write_marker (j_compress_ptr cinfo, int marker,
{
if (cinfo->next_scanline != 0 ||
(cinfo->global_state != CSTATE_SCANNING &&
cinfo->global_state != CSTATE_RAW_OK))
cinfo->global_state != CSTATE_RAW_OK &&
cinfo->global_state != CSTATE_WRCOEFS))
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
(*cinfo->marker->write_any_marker) (cinfo, marker, dataptr, datalen);
@ -347,18 +223,6 @@ jpeg_write_tables (j_compress_ptr cinfo)
(*cinfo->marker->write_tables_only) (cinfo);
/* And clean up. */
(*cinfo->dest->term_destination) (cinfo);
/* We can use jpeg_abort to release memory ... is this necessary? */
/* We can use jpeg_abort to release memory. */
jpeg_abort((j_common_ptr) cinfo);
}
/*
* Abort processing of a JPEG compression operation,
* but don't destroy the object itself.
*/
GLOBAL void
jpeg_abort_compress (j_compress_ptr cinfo)
{
jpeg_abort((j_common_ptr) cinfo); /* use common routine */
}

161
jcapistd.c Normal file
View File

@ -0,0 +1,161 @@
/*
* jcapistd.c
*
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains application interface code for the compression half
* of the JPEG library. These are the "standard" API routines that are
* used in the normal full-compression case. They are not used by a
* transcoding-only application. Note that if an application links in
* jpeg_start_compress, it will end up linking in the entire compressor.
* We thus must separate this file from jcapimin.c to avoid linking the
* whole compression library into a transcoder.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/*
* Compression initialization.
* Before calling this, all parameters and a data destination must be set up.
*
* We require a write_all_tables parameter as a failsafe check when writing
* multiple datastreams from the same compression object. Since prior runs
* will have left all the tables marked sent_table=TRUE, a subsequent run
* would emit an abbreviated stream (no tables) by default. This may be what
* is wanted, but for safety's sake it should not be the default behavior:
* programmers should have to make a deliberate choice to emit abbreviated
* images. Therefore the documentation and examples should encourage people
* to pass write_all_tables=TRUE; then it will take active thought to do the
* wrong thing.
*/
GLOBAL void
jpeg_start_compress (j_compress_ptr cinfo, boolean write_all_tables)
{
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (write_all_tables)
jpeg_suppress_tables(cinfo, FALSE); /* mark all tables to be written */
/* (Re)initialize error mgr and destination modules */
(*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
(*cinfo->dest->init_destination) (cinfo);
/* Perform master selection of active modules */
jinit_compress_master(cinfo);
/* Set up for the first pass */
(*cinfo->master->prepare_for_pass) (cinfo);
/* Ready for application to drive first pass through jpeg_write_scanlines
* or jpeg_write_raw_data.
*/
cinfo->next_scanline = 0;
cinfo->global_state = (cinfo->raw_data_in ? CSTATE_RAW_OK : CSTATE_SCANNING);
}
/*
* Write some scanlines of data to the JPEG compressor.
*
* The return value will be the number of lines actually written.
* This should be less than the supplied num_lines only in case that
* the data destination module has requested suspension of the compressor,
* or if more than image_height scanlines are passed in.
*
* Note: we warn about excess calls to jpeg_write_scanlines() since
* this likely signals an application programmer error. However,
* excess scanlines passed in the last valid call are *silently* ignored,
* so that the application need not adjust num_lines for end-of-image
* when using a multiple-scanline buffer.
*/
GLOBAL JDIMENSION
jpeg_write_scanlines (j_compress_ptr cinfo, JSAMPARRAY scanlines,
JDIMENSION num_lines)
{
JDIMENSION row_ctr, rows_left;
if (cinfo->global_state != CSTATE_SCANNING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->next_scanline >= cinfo->image_height)
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->next_scanline;
cinfo->progress->pass_limit = (long) cinfo->image_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Give master control module another chance if this is first call to
* jpeg_write_scanlines. This lets output of the frame/scan headers be
* delayed so that application can write COM, etc, markers between
* jpeg_start_compress and jpeg_write_scanlines.
*/
if (cinfo->master->call_pass_startup)
(*cinfo->master->pass_startup) (cinfo);
/* Ignore any extra scanlines at bottom of image. */
rows_left = cinfo->image_height - cinfo->next_scanline;
if (num_lines > rows_left)
num_lines = rows_left;
row_ctr = 0;
(*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, num_lines);
cinfo->next_scanline += row_ctr;
return row_ctr;
}
/*
* Alternate entry point to write raw data.
* Processes exactly one iMCU row per call, unless suspended.
*/
GLOBAL JDIMENSION
jpeg_write_raw_data (j_compress_ptr cinfo, JSAMPIMAGE data,
JDIMENSION num_lines)
{
JDIMENSION lines_per_iMCU_row;
if (cinfo->global_state != CSTATE_RAW_OK)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->next_scanline >= cinfo->image_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->next_scanline;
cinfo->progress->pass_limit = (long) cinfo->image_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Give master control module another chance if this is first call to
* jpeg_write_raw_data. This lets output of the frame/scan headers be
* delayed so that application can write COM, etc, markers between
* jpeg_start_compress and jpeg_write_raw_data.
*/
if (cinfo->master->call_pass_startup)
(*cinfo->master->pass_startup) (cinfo);
/* Verify that at least one iMCU row has been passed. */
lines_per_iMCU_row = cinfo->max_v_samp_factor * DCTSIZE;
if (num_lines < lines_per_iMCU_row)
ERREXIT(cinfo, JERR_BUFFER_SIZE);
/* Directly compress the row. */
if (! (*cinfo->coef->compress_data) (cinfo, data)) {
/* If compressor did not consume the whole row, suspend processing. */
return 0;
}
/* OK, we processed one iMCU row. */
cinfo->next_scanline += lines_per_iMCU_row;
return lines_per_iMCU_row;
}

29
jccoefct.c
View File

@ -41,14 +41,14 @@ typedef struct {
/* For single-pass compression, it's sufficient to buffer just one MCU
* (although this may prove a bit slow in practice). We allocate a
* workspace of MAX_BLOCKS_IN_MCU coefficient blocks, and reuse it for each
* workspace of C_MAX_BLOCKS_IN_MCU coefficient blocks, and reuse it for each
* MCU constructed and sent. (On 80x86, the workspace is FAR even though
* it's not really very big; this is to keep the module interfaces unchanged
* when a large coefficient buffer is necessary.)
* In multi-pass modes, this array points to the current MCU's blocks
* within the virtual arrays.
*/
JBLOCKROW MCU_buffer[MAX_BLOCKS_IN_MCU];
JBLOCKROW MCU_buffer[C_MAX_BLOCKS_IN_MCU];
/* In multi-pass modes, we need a virtual block array for each component. */
jvirt_barray_ptr whole_image[MAX_COMPONENTS];
@ -257,7 +257,8 @@ compress_first_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
/* Align the virtual buffer for this component. */
buffer = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[ci],
coef->iMCU_row_num * compptr->v_samp_factor, TRUE);
coef->iMCU_row_num * compptr->v_samp_factor,
(JDIMENSION) compptr->v_samp_factor, TRUE);
/* Count non-dummy DCT block rows in this iMCU row. */
if (coef->iMCU_row_num < last_iMCU_row)
block_rows = compptr->v_samp_factor;
@ -354,7 +355,8 @@ compress_output (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
compptr = cinfo->cur_comp_info[ci];
buffer[ci] = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],
coef->iMCU_row_num * compptr->v_samp_factor, FALSE);
coef->iMCU_row_num * compptr->v_samp_factor,
(JDIMENSION) compptr->v_samp_factor, FALSE);
}
/* Loop to process one whole iMCU row */
@ -402,9 +404,6 @@ GLOBAL void
jinit_c_coef_controller (j_compress_ptr cinfo, boolean need_full_buffer)
{
my_coef_ptr coef;
int ci, i;
jpeg_component_info *compptr;
JBLOCKROW buffer;
coef = (my_coef_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
@ -417,14 +416,17 @@ jinit_c_coef_controller (j_compress_ptr cinfo, boolean need_full_buffer)
#ifdef FULL_COEF_BUFFER_SUPPORTED
/* Allocate a full-image virtual array for each component, */
/* padded to a multiple of samp_factor DCT blocks in each direction. */
/* Note memmgr implicitly pads the vertical direction. */
int ci;
jpeg_component_info *compptr;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
coef->whole_image[ci] = (*cinfo->mem->request_virt_barray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
(JDIMENSION) jround_up((long) compptr->width_in_blocks,
(long) compptr->h_samp_factor),
compptr->height_in_blocks,
(JDIMENSION) jround_up((long) compptr->height_in_blocks,
(long) compptr->v_samp_factor),
(JDIMENSION) compptr->v_samp_factor);
}
#else
@ -432,10 +434,13 @@ jinit_c_coef_controller (j_compress_ptr cinfo, boolean need_full_buffer)
#endif
} else {
/* We only need a single-MCU buffer. */
JBLOCKROW buffer;
int i;
buffer = (JBLOCKROW)
(*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE,
MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
for (i = 0; i < MAX_BLOCKS_IN_MCU; i++) {
C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
for (i = 0; i < C_MAX_BLOCKS_IN_MCU; i++) {
coef->MCU_buffer[i] = buffer + i;
}
coef->whole_image[0] = NULL; /* flag for no virtual arrays */

64
jcdctmgr.c
View File

@ -1,7 +1,7 @@
/*
* jcdctmgr.c
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -27,7 +27,8 @@ typedef struct {
/* The actual post-DCT divisors --- not identical to the quant table
* entries, because of scaling (especially for an unnormalized DCT).
* Each table is given in zigzag order.
* Each table is given in normal array order; note that this must
* be converted from the zigzag order of the quantization tables.
*/
DCTELEM * divisors[NUM_QUANT_TBLS];
@ -41,20 +42,6 @@ typedef struct {
typedef my_fdct_controller * my_fdct_ptr;
/* ZAG[i] is the natural-order position of the i'th element of zigzag order. */
static const int ZAG[DCTSIZE2] = {
0, 1, 8, 16, 9, 2, 3, 10,
17, 24, 32, 25, 18, 11, 4, 5,
12, 19, 26, 33, 40, 48, 41, 34,
27, 20, 13, 6, 7, 14, 21, 28,
35, 42, 49, 56, 57, 50, 43, 36,
29, 22, 15, 23, 30, 37, 44, 51,
58, 59, 52, 45, 38, 31, 39, 46,
53, 60, 61, 54, 47, 55, 62, 63
};
/*
* Initialize for a processing pass.
* Verify that all referenced Q-tables are present, and set up
@ -96,7 +83,7 @@ start_pass_fdctmgr (j_compress_ptr cinfo)
}
dtbl = fdct->divisors[qtblno];
for (i = 0; i < DCTSIZE2; i++) {
dtbl[i] = ((DCTELEM) qtbl->quantval[i]) << 3;
dtbl[i] = ((DCTELEM) qtbl->quantval[jpeg_zigzag_order[i]]) << 3;
}
break;
#endif
@ -131,8 +118,8 @@ start_pass_fdctmgr (j_compress_ptr cinfo)
dtbl = fdct->divisors[qtblno];
for (i = 0; i < DCTSIZE2; i++) {
dtbl[i] = (DCTELEM)
DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[i],
(INT32) aanscales[ZAG[i]]),
DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[jpeg_zigzag_order[i]],
(INT32) aanscales[i]),
CONST_BITS-3);
}
}
@ -162,12 +149,14 @@ start_pass_fdctmgr (j_compress_ptr cinfo)
DCTSIZE2 * SIZEOF(FAST_FLOAT));
}
fdtbl = fdct->float_divisors[qtblno];
for (i = 0; i < DCTSIZE2; i++) {
row = ZAG[i] >> 3;
col = ZAG[i] & 7;
fdtbl[i] = (FAST_FLOAT)
(1.0 / (((double) qtbl->quantval[i] *
aanscalefactor[row] * aanscalefactor[col] * 8.0)));
i = 0;
for (row = 0; row < DCTSIZE; row++) {
for (col = 0; col < DCTSIZE; col++) {
fdtbl[i] = (FAST_FLOAT)
(1.0 / (((double) qtbl->quantval[jpeg_zigzag_order[i]] *
aanscalefactor[row] * aanscalefactor[col] * 8.0)));
i++;
}
}
}
break;
@ -185,7 +174,7 @@ start_pass_fdctmgr (j_compress_ptr cinfo)
*
* The input samples are taken from the sample_data[] array starting at
* position start_row/start_col, and moving to the right for any additional
* blocks. The quantized, zigzagged coefficients are returned in coef_blocks[].
* blocks. The quantized coefficients are returned in coef_blocks[].
*/
METHODDEF void
@ -242,7 +231,7 @@ forward_DCT (j_compress_ptr cinfo, jpeg_component_info * compptr,
for (i = 0; i < DCTSIZE2; i++) {
qval = divisors[i];
temp = workspace[ZAG[i]];
temp = workspace[i];
/* Divide the coefficient value by qval, ensuring proper rounding.
* Since C does not specify the direction of rounding for negative
* quotients, we have to force the dividend positive for portability.
@ -304,18 +293,19 @@ forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr,
for (elemr = 0; elemr < DCTSIZE; elemr++) {
elemptr = sample_data[elemr] + start_col;
#if DCTSIZE == 8 /* unroll the inner loop */
*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
#else
{ register int elemc;
for (elemc = DCTSIZE; elemc > 0; elemc--) {
*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
*workspaceptr++ = (FAST_FLOAT)
(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
}
}
#endif
@ -332,7 +322,7 @@ forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr,
for (i = 0; i < DCTSIZE2; i++) {
/* Apply the quantization and scaling factor */
temp = workspace[ZAG[i]] * divisors[i];
temp = workspace[i] * divisors[i];
/* Round to nearest integer.
* Since C does not specify the direction of rounding for negative
* quotients, we have to force the dividend positive for portability.

67
jchuff.c
View File

@ -1,7 +1,7 @@
/*
* jchuff.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -17,16 +17,9 @@
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
#include "jchuff.h" /* Declarations shared with jcphuff.c */
/* Derived data constructed for each Huffman table */
typedef struct {
unsigned int ehufco[256]; /* code for each symbol */
char ehufsi[256]; /* length of code for each symbol */
/* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */
} C_DERIVED_TBL;
/* Expanded entropy encoder object for Huffman encoding.
*
* The savable_state subrecord contains fields that change within an MCU,
@ -69,8 +62,8 @@ typedef struct {
int next_restart_num; /* next restart number to write (0-7) */
/* Pointers to derived tables (these workspaces have image lifespan) */
C_DERIVED_TBL * dc_derived_tbls[NUM_HUFF_TBLS];
C_DERIVED_TBL * ac_derived_tbls[NUM_HUFF_TBLS];
c_derived_tbl * dc_derived_tbls[NUM_HUFF_TBLS];
c_derived_tbl * ac_derived_tbls[NUM_HUFF_TBLS];
#ifdef ENTROPY_OPT_SUPPORTED /* Statistics tables for optimization */
long * dc_count_ptrs[NUM_HUFF_TBLS];
@ -101,8 +94,6 @@ METHODDEF boolean encode_mcu_gather JPP((j_compress_ptr cinfo,
JBLOCKROW *MCU_data));
METHODDEF void finish_pass_gather JPP((j_compress_ptr cinfo));
#endif
LOCAL void fix_huff_tbl JPP((j_compress_ptr cinfo, JHUFF_TBL * htbl,
C_DERIVED_TBL ** pdtbl));
/*
@ -145,7 +136,7 @@ start_pass_huff (j_compress_ptr cinfo, boolean gather_statistics)
if (gather_statistics) {
#ifdef ENTROPY_OPT_SUPPORTED
/* Allocate and zero the statistics tables */
/* Note that gen_huff_coding expects 257 entries in each table! */
/* Note that jpeg_gen_optimal_table expects 257 entries in each table! */
if (entropy->dc_count_ptrs[dctbl] == NULL)
entropy->dc_count_ptrs[dctbl] = (long *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
@ -160,10 +151,10 @@ start_pass_huff (j_compress_ptr cinfo, boolean gather_statistics)
} else {
/* Compute derived values for Huffman tables */
/* We may do this more than once for a table, but it's not expensive */
fix_huff_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[dctbl],
& entropy->dc_derived_tbls[dctbl]);
fix_huff_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[actbl],
& entropy->ac_derived_tbls[actbl]);
jpeg_make_c_derived_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[dctbl],
& entropy->dc_derived_tbls[dctbl]);
jpeg_make_c_derived_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[actbl],
& entropy->ac_derived_tbls[actbl]);
}
/* Initialize DC predictions to 0 */
entropy->saved.last_dc_val[ci] = 0;
@ -179,11 +170,16 @@ start_pass_huff (j_compress_ptr cinfo, boolean gather_statistics)
}
LOCAL void
fix_huff_tbl (j_compress_ptr cinfo, JHUFF_TBL * htbl, C_DERIVED_TBL ** pdtbl)
/* Compute the derived values for a Huffman table */
/*
* Compute the derived values for a Huffman table.
* Note this is also used by jcphuff.c.
*/
GLOBAL void
jpeg_make_c_derived_tbl (j_compress_ptr cinfo, JHUFF_TBL * htbl,
c_derived_tbl ** pdtbl)
{
C_DERIVED_TBL *dtbl;
c_derived_tbl *dtbl;
int p, i, l, lastp, si;
char huffsize[257];
unsigned int huffcode[257];
@ -191,9 +187,9 @@ fix_huff_tbl (j_compress_ptr cinfo, JHUFF_TBL * htbl, C_DERIVED_TBL ** pdtbl)
/* Allocate a workspace if we haven't already done so. */
if (*pdtbl == NULL)
*pdtbl = (C_DERIVED_TBL *)
*pdtbl = (c_derived_tbl *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(C_DERIVED_TBL));
SIZEOF(c_derived_tbl));
dtbl = *pdtbl;
/* Figure C.1: make table of Huffman code length for each symbol */
@ -324,7 +320,7 @@ flush_bits (working_state * state)
LOCAL boolean
encode_one_block (working_state * state, JCOEFPTR block, int last_dc_val,
C_DERIVED_TBL *dctbl, C_DERIVED_TBL *actbl)
c_derived_tbl *dctbl, c_derived_tbl *actbl)
{
register int temp, temp2;
register int nbits;
@ -363,7 +359,7 @@ encode_one_block (working_state * state, JCOEFPTR block, int last_dc_val,
r = 0; /* r = run length of zeros */
for (k = 1; k < DCTSIZE2; k++) {
if ((temp = block[k]) == 0) {
if ((temp = block[jpeg_natural_order[k]]) == 0) {
r++;
} else {
/* if run length > 15, must emit special run-length-16 codes (0xF0) */
@ -569,7 +565,7 @@ htest_one_block (JCOEFPTR block, int last_dc_val,
r = 0; /* r = run length of zeros */
for (k = 1; k < DCTSIZE2; k++) {
if ((temp = block[k]) == 0) {
if ((temp = block[jpeg_natural_order[k]]) == 0) {
r++;
} else {
/* if run length > 15, must emit special run-length-16 codes (0xF0) */
@ -637,10 +633,13 @@ encode_mcu_gather (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
}
/* Generate the optimal coding for the given counts, initialize htbl */
/*
* Generate the optimal coding for the given counts, fill htbl.
* Note this is also used by jcphuff.c.
*/
LOCAL void
gen_huff_coding (j_compress_ptr cinfo, JHUFF_TBL *htbl, long freq[])
GLOBAL void
jpeg_gen_optimal_table (j_compress_ptr cinfo, JHUFF_TBL * htbl, long freq[])
{
#define MAX_CLEN 32 /* assumed maximum initial code length */
UINT8 bits[MAX_CLEN+1]; /* bits[k] = # of symbols with code length k */
@ -790,8 +789,8 @@ finish_pass_gather (j_compress_ptr cinfo)
boolean did_dc[NUM_HUFF_TBLS];
boolean did_ac[NUM_HUFF_TBLS];
/* It's important not to apply gen_huff_coding more than once per table,
* because it clobbers the input frequency counts!
/* It's important not to apply jpeg_gen_optimal_table more than once
* per table, because it clobbers the input frequency counts!
*/
MEMZERO(did_dc, SIZEOF(did_dc));
MEMZERO(did_ac, SIZEOF(did_ac));
@ -804,14 +803,14 @@ finish_pass_gather (j_compress_ptr cinfo)
htblptr = & cinfo->dc_huff_tbl_ptrs[dctbl];
if (*htblptr == NULL)
*htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo);
gen_huff_coding(cinfo, *htblptr, entropy->dc_count_ptrs[dctbl]);
jpeg_gen_optimal_table(cinfo, *htblptr, entropy->dc_count_ptrs[dctbl]);
did_dc[dctbl] = TRUE;
}
if (! did_ac[actbl]) {
htblptr = & cinfo->ac_huff_tbl_ptrs[actbl];
if (*htblptr == NULL)
*htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo);
gen_huff_coding(cinfo, *htblptr, entropy->ac_count_ptrs[actbl]);
jpeg_gen_optimal_table(cinfo, *htblptr, entropy->ac_count_ptrs[actbl]);
did_ac[actbl] = TRUE;
}
}

34
jchuff.h Normal file
View File

@ -0,0 +1,34 @@
/*
* jchuff.h
*
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains declarations for Huffman entropy encoding routines
* that are shared between the sequential encoder (jchuff.c) and the
* progressive encoder (jcphuff.c). No other modules need to see these.
*/
/* Derived data constructed for each Huffman table */
typedef struct {
unsigned int ehufco[256]; /* code for each symbol */
char ehufsi[256]; /* length of code for each symbol */
/* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */
} c_derived_tbl;
/* Short forms of external names for systems with brain-damaged linkers. */
#ifdef NEED_SHORT_EXTERNAL_NAMES
#define jpeg_make_c_derived_tbl jMkCDerived
#define jpeg_gen_optimal_table jGenOptTbl
#endif /* NEED_SHORT_EXTERNAL_NAMES */
/* Expand a Huffman table definition into the derived format */
EXTERN void jpeg_make_c_derived_tbl JPP((j_compress_ptr cinfo,
JHUFF_TBL * htbl, c_derived_tbl ** pdtbl));
/* Generate an optimal table definition given the specified counts */
EXTERN void jpeg_gen_optimal_table JPP((j_compress_ptr cinfo,
JHUFF_TBL * htbl, long freq[]));

72
jcinit.c Normal file
View File

@ -0,0 +1,72 @@
/*
* jcinit.c
*
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains initialization logic for the JPEG compressor.
* This routine is in charge of selecting the modules to be executed and
* making an initialization call to each one.
*
* Logically, this code belongs in jcmaster.c. It's split out because
* linking this routine implies linking the entire compression library.
* For a transcoding-only application, we want to be able to use jcmaster.c
* without linking in the whole library.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/*
* Master selection of compression modules.
* This is done once at the start of processing an image. We determine
* which modules will be used and give them appropriate initialization calls.
*/
GLOBAL void
jinit_compress_master (j_compress_ptr cinfo)
{
/* Initialize master control (includes parameter checking/processing) */
jinit_c_master_control(cinfo, FALSE /* full compression */);
/* Preprocessing */
if (! cinfo->raw_data_in) {
jinit_color_converter(cinfo);
jinit_downsampler(cinfo);
jinit_c_prep_controller(cinfo, FALSE /* never need full buffer here */);
}
/* Forward DCT */
jinit_forward_dct(cinfo);
/* Entropy encoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code) {
ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
} else {
if (cinfo->progressive_mode) {
#ifdef C_PROGRESSIVE_SUPPORTED
jinit_phuff_encoder(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else
jinit_huff_encoder(cinfo);
}
/* Need a full-image coefficient buffer in any multi-pass mode. */
jinit_c_coef_controller(cinfo,
(cinfo->num_scans > 1 || cinfo->optimize_coding));
jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */);
jinit_marker_writer(cinfo);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
/* Write the datastream header (SOI) immediately.
* Frame and scan headers are postponed till later.
* This lets application insert special markers after the SOI.
*/
(*cinfo->marker->write_file_header) (cinfo);
}

10
jcmainct.c
View File

@ -182,7 +182,8 @@ process_data_buffer_main (j_compress_ptr cinfo,
ci++, compptr++) {
main->buffer[ci] = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, main->whole_image[ci],
main->cur_iMCU_row * (compptr->v_samp_factor * DCTSIZE), writing);
main->cur_iMCU_row * (compptr->v_samp_factor * DCTSIZE),
(JDIMENSION) (compptr->v_samp_factor * DCTSIZE), writing);
}
/* In a read pass, pretend we just read some source data. */
if (! writing) {
@ -263,13 +264,14 @@ jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer)
if (need_full_buffer) {
#ifdef FULL_MAIN_BUFFER_SUPPORTED
/* Allocate a full-image virtual array for each component */
/* Note we implicitly pad the bottom to a multiple of the iMCU height */
/* Note we pad the bottom to a multiple of the iMCU height */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
main->whole_image[ci] = (*cinfo->mem->request_virt_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
compptr->width_in_blocks * DCTSIZE,
compptr->height_in_blocks * DCTSIZE,
(JDIMENSION) jround_up((long) compptr->height_in_blocks,
(long) compptr->v_samp_factor) * DCTSIZE,
(JDIMENSION) (compptr->v_samp_factor * DCTSIZE));
}
#else

82
jcmarker.c
View File

@ -1,7 +1,7 @@
/*
* jcmarker.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -295,7 +295,7 @@ LOCAL void
emit_sos (j_compress_ptr cinfo)
/* Emit a SOS marker */
{
int i;
int i, td, ta;
jpeg_component_info *compptr;
emit_marker(cinfo, M_SOS);
@ -307,12 +307,28 @@ emit_sos (j_compress_ptr cinfo)
for (i = 0; i < cinfo->comps_in_scan; i++) {
compptr = cinfo->cur_comp_info[i];
emit_byte(cinfo, compptr->component_id);
emit_byte(cinfo, (compptr->dc_tbl_no << 4) + compptr->ac_tbl_no);
td = compptr->dc_tbl_no;
ta = compptr->ac_tbl_no;
if (cinfo->progressive_mode) {
/* Progressive mode: only DC or only AC tables are used in one scan;
* furthermore, Huffman coding of DC refinement uses no table at all.
* We emit 0 for unused field(s); this is recommended by the P&M text
* but does not seem to be specified in the standard.
*/
if (cinfo->Ss == 0) {
ta = 0; /* DC scan */
if (cinfo->Ah != 0 && !cinfo->arith_code)
td = 0; /* no DC table either */
} else {
td = 0; /* AC scan */
}
}
emit_byte(cinfo, (td << 4) + ta);
}
emit_byte(cinfo, 0); /* Spectral selection start */
emit_byte(cinfo, DCTSIZE2-1); /* Spectral selection end */
emit_byte(cinfo, 0); /* Successive approximation */
emit_byte(cinfo, cinfo->Ss);
emit_byte(cinfo, cinfo->Se);
emit_byte(cinfo, (cinfo->Ah << 4) + cinfo->Al);
}
@ -434,7 +450,7 @@ write_any_marker (j_compress_ptr cinfo, int marker,
* be used for any other JPEG colorspace. The Adobe marker is helpful
* to distinguish RGB, CMYK, and YCCK colorspaces.
* Note that an application can write additional header markers after
* jpeg_start_decompress returns.
* jpeg_start_compress returns.
*/
METHODDEF void
@ -477,27 +493,34 @@ write_frame_header (j_compress_ptr cinfo)
/* Check for a non-baseline specification.
* Note we assume that Huffman table numbers won't be changed later.
*/
is_baseline = TRUE;
if (cinfo->arith_code || (cinfo->data_precision != 8))
if (cinfo->arith_code || cinfo->progressive_mode ||
cinfo->data_precision != 8) {
is_baseline = FALSE;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
if (compptr->dc_tbl_no > 1 || compptr->ac_tbl_no > 1)
} else {
is_baseline = TRUE;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
if (compptr->dc_tbl_no > 1 || compptr->ac_tbl_no > 1)
is_baseline = FALSE;
}
if (prec && is_baseline) {
is_baseline = FALSE;
}
if (prec && is_baseline) {
is_baseline = FALSE;
/* If it's baseline except for quantizer size, warn the user */
TRACEMS(cinfo, 0, JTRC_16BIT_TABLES);
/* If it's baseline except for quantizer size, warn the user */
TRACEMS(cinfo, 0, JTRC_16BIT_TABLES);
}
}
/* Emit the proper SOF marker */
if (cinfo->arith_code)
if (cinfo->arith_code) {
emit_sof(cinfo, M_SOF9); /* SOF code for arithmetic coding */
else if (is_baseline)
emit_sof(cinfo, M_SOF0); /* SOF code for baseline implementation */
else
emit_sof(cinfo, M_SOF1); /* SOF code for non-baseline Huffman file */
} else {
if (cinfo->progressive_mode)
emit_sof(cinfo, M_SOF2); /* SOF code for progressive Huffman */
else if (is_baseline)
emit_sof(cinfo, M_SOF0); /* SOF code for baseline implementation */
else
emit_sof(cinfo, M_SOF1); /* SOF code for non-baseline Huffman file */
}
}
@ -525,8 +548,19 @@ write_scan_header (j_compress_ptr cinfo)
*/
for (i = 0; i < cinfo->comps_in_scan; i++) {
compptr = cinfo->cur_comp_info[i];
emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
if (cinfo->progressive_mode) {
/* Progressive mode: only DC or only AC tables are used in one scan */
if (cinfo->Ss == 0) {
if (cinfo->Ah == 0) /* DC needs no table for refinement scan */
emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
} else {
emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
}
} else {
/* Sequential mode: need both DC and AC tables */
emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
}
}
}

416
jcmaster.c
View File

@ -6,9 +6,9 @@
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains master control logic for the JPEG compressor.
* These routines are concerned with selecting the modules to be executed
* and with determining the number of passes and the work to be done in each
* pass.
* These routines are concerned with parameter validation, initial setup,
* and inter-pass control (determining the number of passes and the work
* to be done in each pass).
*/
#define JPEG_INTERNALS
@ -18,10 +18,21 @@
/* Private state */
typedef enum {
main_pass, /* input data, also do first output step */
huff_opt_pass, /* Huffman code optimization pass */
output_pass /* data output pass */
} c_pass_type;
typedef struct {
struct jpeg_comp_master pub; /* public fields */
int pass_number; /* eventually need more complex state... */
c_pass_type pass_type; /* the type of the current pass */
int pass_number; /* # of passes completed */
int total_passes; /* total # of passes needed */
int scan_number; /* current index in scan_info[] */
} my_comp_master;
typedef my_comp_master * my_master_ptr;
@ -82,6 +93,8 @@ initial_setup (j_compress_ptr cinfo)
/* Compute dimensions of components */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Fill in the correct component_index value; don't rely on application */
compptr->component_index = ci;
/* For compression, we never do DCT scaling. */
compptr->DCT_scaled_size = DCTSIZE;
/* Size in DCT blocks */
@ -111,6 +124,174 @@ initial_setup (j_compress_ptr cinfo)
}
#ifdef C_MULTISCAN_FILES_SUPPORTED
LOCAL void
validate_script (j_compress_ptr cinfo)
/* Verify that the scan script in cinfo->scan_info[] is valid; also
* determine whether it uses progressive JPEG, and set cinfo->progressive_mode.
*/
{
const jpeg_scan_info * scanptr;
int scanno, ncomps, ci, coefi, thisi;
int Ss, Se, Ah, Al;
boolean component_sent[MAX_COMPONENTS];
#ifdef C_PROGRESSIVE_SUPPORTED
int * last_bitpos_ptr;
int last_bitpos[MAX_COMPONENTS][DCTSIZE2];
/* -1 until that coefficient has been seen; then last Al for it */
#endif
if (cinfo->num_scans <= 0)
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, 0);
/* For sequential JPEG, all scans must have Ss=0, Se=DCTSIZE2-1;
* for progressive JPEG, no scan can have this.
*/
scanptr = cinfo->scan_info;
if (scanptr->Ss != 0 || scanptr->Se != DCTSIZE2-1) {
#ifdef C_PROGRESSIVE_SUPPORTED
cinfo->progressive_mode = TRUE;
last_bitpos_ptr = & last_bitpos[0][0];
for (ci = 0; ci < cinfo->num_components; ci++)
for (coefi = 0; coefi < DCTSIZE2; coefi++)
*last_bitpos_ptr++ = -1;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else {
cinfo->progressive_mode = FALSE;
for (ci = 0; ci < cinfo->num_components; ci++)
component_sent[ci] = FALSE;
}
for (scanno = 1; scanno <= cinfo->num_scans; scanptr++, scanno++) {
/* Validate component indexes */
ncomps = scanptr->comps_in_scan;
if (ncomps <= 0 || ncomps > MAX_COMPS_IN_SCAN)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, ncomps, MAX_COMPS_IN_SCAN);
for (ci = 0; ci < ncomps; ci++) {
thisi = scanptr->component_index[ci];
if (thisi < 0 || thisi >= cinfo->num_components)
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
/* Components must appear in SOF order within each scan */
if (ci > 0 && thisi <= scanptr->component_index[ci-1])
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
}
/* Validate progression parameters */
Ss = scanptr->Ss;
Se = scanptr->Se;
Ah = scanptr->Ah;
Al = scanptr->Al;
if (cinfo->progressive_mode) {
#ifdef C_PROGRESSIVE_SUPPORTED
if (Ss < 0 || Ss >= DCTSIZE2 || Se < Ss || Se >= DCTSIZE2 ||
Ah < 0 || Ah > 13 || Al < 0 || Al > 13)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
if (Ss == 0) {
if (Se != 0) /* DC and AC together not OK */
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
} else {
if (ncomps != 1) /* AC scans must be for only one component */
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
}
for (ci = 0; ci < ncomps; ci++) {
last_bitpos_ptr = & last_bitpos[scanptr->component_index[ci]][0];
if (Ss != 0 && last_bitpos_ptr[0] < 0) /* AC without prior DC scan */
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
for (coefi = Ss; coefi <= Se; coefi++) {
if (last_bitpos_ptr[coefi] < 0) {
/* first scan of this coefficient */
if (Ah != 0)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
} else {
/* not first scan */
if (Ah != last_bitpos_ptr[coefi] || Al != Ah-1)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
}
last_bitpos_ptr[coefi] = Al;
}
}
#endif
} else {
/* For sequential JPEG, all progression parameters must be these: */
if (Ss != 0 || Se != DCTSIZE2-1 || Ah != 0 || Al != 0)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
/* Make sure components are not sent twice */
for (ci = 0; ci < ncomps; ci++) {
thisi = scanptr->component_index[ci];
if (component_sent[thisi])
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
component_sent[thisi] = TRUE;
}
}
}
/* Now verify that everything got sent. */
if (cinfo->progressive_mode) {
#ifdef C_PROGRESSIVE_SUPPORTED
/* For progressive mode, we only check that at least some DC data
* got sent for each component; the spec does not require that all bits
* of all coefficients be transmitted. Would it be wiser to enforce
* transmission of all coefficient bits??
*/
for (ci = 0; ci < cinfo->num_components; ci++) {
if (last_bitpos[ci][0] < 0)
ERREXIT(cinfo, JERR_MISSING_DATA);
}
#endif
} else {
for (ci = 0; ci < cinfo->num_components; ci++) {
if (! component_sent[ci])
ERREXIT(cinfo, JERR_MISSING_DATA);
}
}
}
#endif /* C_MULTISCAN_FILES_SUPPORTED */
LOCAL void
select_scan_parameters (j_compress_ptr cinfo)
/* Set up the scan parameters for the current scan */
{
int ci;
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (cinfo->scan_info != NULL) {
/* Prepare for current scan --- the script is already validated */
my_master_ptr master = (my_master_ptr) cinfo->master;
const jpeg_scan_info * scanptr = cinfo->scan_info + master->scan_number;
cinfo->comps_in_scan = scanptr->comps_in_scan;
for (ci = 0; ci < scanptr->comps_in_scan; ci++) {
cinfo->cur_comp_info[ci] =
&cinfo->comp_info[scanptr->component_index[ci]];
}
cinfo->Ss = scanptr->Ss;
cinfo->Se = scanptr->Se;
cinfo->Ah = scanptr->Ah;
cinfo->Al = scanptr->Al;
}
else
#endif
{
/* Prepare for single sequential-JPEG scan containing all components */
if (cinfo->num_components > MAX_COMPS_IN_SCAN)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
MAX_COMPS_IN_SCAN);
cinfo->comps_in_scan = cinfo->num_components;
for (ci = 0; ci < cinfo->num_components; ci++) {
cinfo->cur_comp_info[ci] = &cinfo->comp_info[ci];
}
cinfo->Ss = 0;
cinfo->Se = DCTSIZE2-1;
cinfo->Ah = 0;
cinfo->Al = 0;
}
}
LOCAL void
per_scan_setup (j_compress_ptr cinfo)
/* Do computations that are needed before processing a JPEG scan */
@ -178,7 +359,7 @@ per_scan_setup (j_compress_ptr cinfo)
compptr->last_row_height = tmp;
/* Prepare array describing MCU composition */
mcublks = compptr->MCU_blocks;
if (cinfo->blocks_in_MCU + mcublks > MAX_BLOCKS_IN_MCU)
if (cinfo->blocks_in_MCU + mcublks > C_MAX_BLOCKS_IN_MCU)
ERREXIT(cinfo, JERR_BAD_MCU_SIZE);
while (mcublks-- > 0) {
cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;
@ -196,59 +377,6 @@ per_scan_setup (j_compress_ptr cinfo)
}
/*
* Master selection of compression modules.
* This is done once at the start of processing an image. We determine
* which modules will be used and give them appropriate initialization calls.
*/
LOCAL void
master_selection (j_compress_ptr cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
initial_setup(cinfo);
master->pass_number = 0;
/* There's not a lot of smarts here right now, but it'll get more
* complicated when we have multiple implementations available...
*/
/* Preprocessing */
if (! cinfo->raw_data_in) {
jinit_color_converter(cinfo);
jinit_downsampler(cinfo);
jinit_c_prep_controller(cinfo, FALSE /* never need full buffer here */);
}
/* Forward DCT */
jinit_forward_dct(cinfo);
/* Entropy encoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code) {
#ifdef C_ARITH_CODING_SUPPORTED
jinit_arith_encoder(cinfo);
#else
ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
#endif
} else
jinit_huff_encoder(cinfo);
/* For now, a full buffer is needed only for Huffman optimization. */
jinit_c_coef_controller(cinfo, cinfo->optimize_coding);
jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */);
jinit_marker_writer(cinfo);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
/* Write the datastream header (SOI) immediately.
* Frame and scan headers are postponed till later.
* This lets application insert special markers after the SOI.
*/
(*cinfo->marker->write_file_header) (cinfo);
}
/*
* Per-pass setup.
* This is called at the beginning of each pass. We determine which modules
@ -261,75 +389,77 @@ METHODDEF void
prepare_for_pass (j_compress_ptr cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
int ci;
int npasses;
/* ???? JUST A QUICK CROCK FOR NOW ??? */
/* For now, handle only single interleaved output scan; */
/* we support two passes for Huffman optimization. */
/* Prepare for single scan containing all components */
if (cinfo->num_components > MAX_COMPS_IN_SCAN)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
MAX_COMPS_IN_SCAN);
cinfo->comps_in_scan = cinfo->num_components;
for (ci = 0; ci < cinfo->num_components; ci++) {
cinfo->cur_comp_info[ci] = &cinfo->comp_info[ci];
}
per_scan_setup(cinfo);
if (! cinfo->optimize_coding) {
/* Standard single-pass case */
npasses = 1;
master->pub.call_pass_startup = TRUE;
master->pub.is_last_pass = TRUE;
switch (master->pass_type) {
case main_pass:
/* Initial pass: will collect input data, and do either Huffman
* optimization or data output for the first scan.
*/
select_scan_parameters(cinfo);
per_scan_setup(cinfo);
if (! cinfo->raw_data_in) {
(*cinfo->cconvert->start_pass) (cinfo);
(*cinfo->downsample->start_pass) (cinfo);
(*cinfo->prep->start_pass) (cinfo, JBUF_PASS_THRU);
}
(*cinfo->fdct->start_pass) (cinfo);
(*cinfo->entropy->start_pass) (cinfo, FALSE);
(*cinfo->coef->start_pass) (cinfo, JBUF_PASS_THRU);
(*cinfo->entropy->start_pass) (cinfo, cinfo->optimize_coding);
(*cinfo->coef->start_pass) (cinfo,
(master->total_passes > 1 ?
JBUF_SAVE_AND_PASS : JBUF_PASS_THRU));
(*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);
} else {
npasses = 2;
switch (master->pass_number) {
case 0:
/* Huffman optimization: run all modules, gather statistics */
if (cinfo->optimize_coding) {
/* No immediate data output; postpone writing frame/scan headers */
master->pub.call_pass_startup = FALSE;
master->pub.is_last_pass = FALSE;
if (! cinfo->raw_data_in) {
(*cinfo->cconvert->start_pass) (cinfo);
(*cinfo->downsample->start_pass) (cinfo);
(*cinfo->prep->start_pass) (cinfo, JBUF_PASS_THRU);
}
(*cinfo->fdct->start_pass) (cinfo);
} else {
/* Will write frame/scan headers at first jpeg_write_scanlines call */
master->pub.call_pass_startup = TRUE;
}
break;
#ifdef ENTROPY_OPT_SUPPORTED
case huff_opt_pass:
/* Do Huffman optimization for a scan after the first one. */
select_scan_parameters(cinfo);
per_scan_setup(cinfo);
if (cinfo->Ss != 0 || cinfo->Ah == 0 || cinfo->arith_code) {
(*cinfo->entropy->start_pass) (cinfo, TRUE);
(*cinfo->coef->start_pass) (cinfo, JBUF_SAVE_AND_PASS);
(*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);
break;
case 1:
/* Second pass: reread data from coefficient buffer */
master->pub.is_last_pass = TRUE;
(*cinfo->entropy->start_pass) (cinfo, FALSE);
(*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST);
/* We emit frame/scan headers now */
(*cinfo->marker->write_frame_header) (cinfo);
(*cinfo->marker->write_scan_header) (cinfo);
master->pub.call_pass_startup = FALSE;
break;
}
/* Special case: Huffman DC refinement scans need no Huffman table
* and therefore we can skip the optimization pass for them.
*/
master->pass_type = output_pass;
master->pass_number++;
/*FALLTHROUGH*/
#endif
case output_pass:
/* Do a data-output pass. */
/* We need not repeat per-scan setup if prior optimization pass did it. */
if (! cinfo->optimize_coding) {
select_scan_parameters(cinfo);
per_scan_setup(cinfo);
}
(*cinfo->entropy->start_pass) (cinfo, FALSE);
(*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST);
/* We emit frame/scan headers now */
if (master->scan_number == 0)
(*cinfo->marker->write_frame_header) (cinfo);
(*cinfo->marker->write_scan_header) (cinfo);
master->pub.call_pass_startup = FALSE;
break;
default:
ERREXIT(cinfo, JERR_NOT_COMPILED);
}
master->pub.is_last_pass = (master->pass_number == master->total_passes-1);
/* Set up progress monitor's pass info if present */
if (cinfo->progress != NULL) {
cinfo->progress->completed_passes = master->pass_number;
cinfo->progress->total_passes = npasses;
cinfo->progress->total_passes = master->total_passes;
}
master->pass_number++;
}
@ -360,23 +490,45 @@ pass_startup (j_compress_ptr cinfo)
METHODDEF void
finish_pass_master (j_compress_ptr cinfo)
{
/* More complex logic later ??? */
my_master_ptr master = (my_master_ptr) cinfo->master;
/* The entropy coder needs an end-of-pass call, either to analyze
* statistics or to flush its output buffer.
/* The entropy coder always needs an end-of-pass call,
* either to analyze statistics or to flush its output buffer.
*/
(*cinfo->entropy->finish_pass) (cinfo);
/* Update state for next pass */
switch (master->pass_type) {
case main_pass:
/* next pass is either output of scan 0 (after optimization)
* or output of scan 1 (if no optimization).
*/
master->pass_type = output_pass;
if (! cinfo->optimize_coding)
master->scan_number++;
break;
case huff_opt_pass:
/* next pass is always output of current scan */
master->pass_type = output_pass;
break;
case output_pass:
/* next pass is either optimization or output of next scan */
if (cinfo->optimize_coding)
master->pass_type = huff_opt_pass;
master->scan_number++;
break;
}
master->pass_number++;
}
/*
* Initialize master compression control.
* This creates my own subrecord and also performs the master selection phase,
* which causes other modules to create their subrecords.
*/
GLOBAL void
jinit_master_compress (j_compress_ptr cinfo)
jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only)
{
my_master_ptr master;
@ -387,6 +539,40 @@ jinit_master_compress (j_compress_ptr cinfo)
master->pub.prepare_for_pass = prepare_for_pass;
master->pub.pass_startup = pass_startup;
master->pub.finish_pass = finish_pass_master;
master->pub.is_last_pass = FALSE;
master_selection(cinfo);
/* Validate parameters, determine derived values */
initial_setup(cinfo);
if (cinfo->scan_info != NULL) {
#ifdef C_MULTISCAN_FILES_SUPPORTED
validate_script(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else {
cinfo->progressive_mode = FALSE;
cinfo->num_scans = 1;
}
if (cinfo->progressive_mode) /* TEMPORARY HACK ??? */
cinfo->optimize_coding = TRUE; /* assume default tables no good for progressive mode */
/* Initialize my private state */
if (transcode_only) {
/* no main pass in transcoding */
if (cinfo->optimize_coding)
master->pass_type = huff_opt_pass;
else
master->pass_type = output_pass;
} else {
/* for normal compression, first pass is always this type: */
master->pass_type = main_pass;
}
master->scan_number = 0;
master->pass_number = 0;
if (cinfo->optimize_coding)
master->total_passes = cinfo->num_scans * 2;
else
master->total_passes = cinfo->num_scans;
}

3
jconfig.st
View File

@ -32,6 +32,9 @@
#define TARGA_SUPPORTED /* Targa image file format */
#define TWO_FILE_COMMANDLINE /* optional -- undef if you like Unix style */
/* Note: if you undef TWO_FILE_COMMANDLINE, you may need to define
* USE_SETMODE. Some Atari compilers require it, some do not.
*/
#define NEED_SIGNAL_CATCHER /* needed if you use jmemname.c */
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */

38
jconfig.wat Normal file
View File

@ -0,0 +1,38 @@
/* jconfig.wat --- jconfig.h for Watcom C/C++ on MS-DOS or OS/2. */
/* see jconfig.doc for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#define CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS /* Watcom uses flat 32-bit addressing */
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#undef TWO_FILE_COMMANDLINE /* optional */
#define USE_SETMODE /* Needed to make one-file style work in Watcom */
#undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */

156
jcparam.c
View File

@ -1,7 +1,7 @@
/*
* jcparam.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -279,15 +279,16 @@ jpeg_set_defaults (j_compress_ptr cinfo)
cinfo->arith_ac_K[i] = 5;
}
/* Default is no multiple-scan output */
cinfo->scan_info = NULL;
cinfo->num_scans = 0;
/* Expect normal source image, not raw downsampled data */
cinfo->raw_data_in = FALSE;
/* Use Huffman coding, not arithmetic coding, by default */
cinfo->arith_code = FALSE;
/* Color images are interleaved by default */
cinfo->interleave = TRUE;
/* By default, don't do extra passes to optimize entropy coding */
cinfo->optimize_coding = FALSE;
/* The standard Huffman tables are only valid for 8-bit data precision.
@ -368,7 +369,6 @@ jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace)
#define SET_COMP(index,id,hsamp,vsamp,quant,dctbl,actbl) \
(compptr = &cinfo->comp_info[index], \
compptr->component_index = (index), \
compptr->component_id = (id), \
compptr->h_samp_factor = (hsamp), \
compptr->v_samp_factor = (vsamp), \
@ -399,9 +399,9 @@ jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace)
case JCS_RGB:
cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag RGB */
cinfo->num_components = 3;
SET_COMP(0, 'R', 1,1, 0, 0,0);
SET_COMP(1, 'G', 1,1, 0, 0,0);
SET_COMP(2, 'B', 1,1, 0, 0,0);
SET_COMP(0, 0x52 /* 'R' */, 1,1, 0, 0,0);
SET_COMP(1, 0x47 /* 'G' */, 1,1, 0, 0,0);
SET_COMP(2, 0x42 /* 'B' */, 1,1, 0, 0,0);
break;
case JCS_YCbCr:
cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */
@ -415,10 +415,10 @@ jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace)
case JCS_CMYK:
cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag CMYK */
cinfo->num_components = 4;
SET_COMP(0, 'C', 1,1, 0, 0,0);
SET_COMP(1, 'M', 1,1, 0, 0,0);
SET_COMP(2, 'Y', 1,1, 0, 0,0);
SET_COMP(3, 'K', 1,1, 0, 0,0);
SET_COMP(0, 0x43 /* 'C' */, 1,1, 0, 0,0);
SET_COMP(1, 0x4D /* 'M' */, 1,1, 0, 0,0);
SET_COMP(2, 0x59 /* 'Y' */, 1,1, 0, 0,0);
SET_COMP(3, 0x4B /* 'K' */, 1,1, 0, 0,0);
break;
case JCS_YCCK:
cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag YCCK */
@ -441,3 +441,135 @@ jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace)
ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
}
}
#ifdef C_PROGRESSIVE_SUPPORTED
LOCAL jpeg_scan_info *
fill_a_scan (jpeg_scan_info * scanptr, int ci,
int Ss, int Se, int Ah, int Al)
/* Support routine: generate one scan for specified component */
{
scanptr->comps_in_scan = 1;
scanptr->component_index[0] = ci;
scanptr->Ss = Ss;
scanptr->Se = Se;
scanptr->Ah = Ah;
scanptr->Al = Al;
scanptr++;
return scanptr;
}
LOCAL jpeg_scan_info *
fill_scans (jpeg_scan_info * scanptr, int ncomps,
int Ss, int Se, int Ah, int Al)
/* Support routine: generate one scan for each component */
{
int ci;
for (ci = 0; ci < ncomps; ci++) {
scanptr->comps_in_scan = 1;
scanptr->component_index[0] = ci;
scanptr->Ss = Ss;
scanptr->Se = Se;
scanptr->Ah = Ah;
scanptr->Al = Al;
scanptr++;
}
return scanptr;
}
LOCAL jpeg_scan_info *
fill_dc_scans (jpeg_scan_info * scanptr, int ncomps, int Ah, int Al)
/* Support routine: generate interleaved DC scan if possible, else N scans */
{
int ci;
if (ncomps <= MAX_COMPS_IN_SCAN) {
/* Single interleaved DC scan */
scanptr->comps_in_scan = ncomps;
for (ci = 0; ci < ncomps; ci++)
scanptr->component_index[ci] = ci;
scanptr->Ss = scanptr->Se = 0;
scanptr->Ah = Ah;
scanptr->Al = Al;
scanptr++;
} else {
/* Noninterleaved DC scan for each component */
scanptr = fill_scans(scanptr, ncomps, 0, 0, Ah, Al);
}
return scanptr;
}
/*
* Create a recommended progressive-JPEG script.
* cinfo->num_components and cinfo->jpeg_color_space must be correct.
*/
GLOBAL void
jpeg_simple_progression (j_compress_ptr cinfo)
{
int ncomps = cinfo->num_components;
int nscans;
jpeg_scan_info * scanptr;
/* Safety check to ensure start_compress not called yet. */
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Figure space needed for script. Calculation must match code below! */
if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
/* Custom script for YCbCr color images. */
nscans = 10;
} else {
/* All-purpose script for other color spaces. */
if (ncomps > MAX_COMPS_IN_SCAN)
nscans = 6 * ncomps; /* 2 DC + 4 AC scans per component */
else
nscans = 2 + 4 * ncomps; /* 2 DC scans; 4 AC scans per component */
}
/* Allocate space for script. */
/* We use permanent pool just in case application re-uses script. */
scanptr = (jpeg_scan_info *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
nscans * SIZEOF(jpeg_scan_info));
cinfo->scan_info = scanptr;
cinfo->num_scans = nscans;
if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
/* Custom script for YCbCr color images. */
/* Initial DC scan */
scanptr = fill_dc_scans(scanptr, ncomps, 0, 1);
/* Initial AC scan: get some luma data out in a hurry */
scanptr = fill_a_scan(scanptr, 0, 1, 5, 0, 2);
/* Chroma data is too small to be worth expending many scans on */
scanptr = fill_a_scan(scanptr, 2, 1, 63, 0, 1);
scanptr = fill_a_scan(scanptr, 1, 1, 63, 0, 1);
/* Complete spectral selection for luma AC */
scanptr = fill_a_scan(scanptr, 0, 6, 63, 0, 2);
/* Refine next bit of luma AC */
scanptr = fill_a_scan(scanptr, 0, 1, 63, 2, 1);
/* Finish DC successive approximation */
scanptr = fill_dc_scans(scanptr, ncomps, 1, 0);
/* Finish AC successive approximation */
scanptr = fill_a_scan(scanptr, 2, 1, 63, 1, 0);
scanptr = fill_a_scan(scanptr, 1, 1, 63, 1, 0);
/* Luma bottom bit comes last since it's usually largest scan */
scanptr = fill_a_scan(scanptr, 0, 1, 63, 1, 0);
} else {
/* All-purpose script for other color spaces. */
/* Successive approximation first pass */
scanptr = fill_dc_scans(scanptr, ncomps, 0, 1);
scanptr = fill_scans(scanptr, ncomps, 1, 5, 0, 2);
scanptr = fill_scans(scanptr, ncomps, 6, 63, 0, 2);
/* Successive approximation second pass */
scanptr = fill_scans(scanptr, ncomps, 1, 63, 2, 1);
/* Successive approximation final pass */
scanptr = fill_dc_scans(scanptr, ncomps, 1, 0);
scanptr = fill_scans(scanptr, ncomps, 1, 63, 1, 0);
}
}
#endif /* C_PROGRESSIVE_SUPPORTED */

829
jcphuff.c Normal file
View File

@ -0,0 +1,829 @@
/*
* jcphuff.c
*
* Copyright (C) 1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains Huffman entropy encoding routines for progressive JPEG.
*
* We do not support output suspension in this module, since the library
* currently does not allow multiple-scan files to be written with output
* suspension.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
#include "jchuff.h" /* Declarations shared with jchuff.c */
#ifdef C_PROGRESSIVE_SUPPORTED
/* Expanded entropy encoder object for progressive Huffman encoding. */
typedef struct {
struct jpeg_entropy_encoder pub; /* public fields */
/* Mode flag: TRUE for optimization, FALSE for actual data output */
boolean gather_statistics;
/* Bit-level coding status.
* next_output_byte/free_in_buffer are local copies of cinfo->dest fields.
*/
JOCTET * next_output_byte; /* => next byte to write in buffer */
size_t free_in_buffer; /* # of byte spaces remaining in buffer */
INT32 put_buffer; /* current bit-accumulation buffer */
int put_bits; /* # of bits now in it */
j_compress_ptr cinfo; /* link to cinfo (needed for dump_buffer) */
/* Coding status for DC components */
int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */
/* Coding status for AC components */
int ac_tbl_no; /* the table number of the single component */
unsigned int EOBRUN; /* run length of EOBs */
unsigned int BE; /* # of buffered correction bits before MCU */
char * bit_buffer; /* buffer for correction bits (1 per char) */
/* packing correction bits tightly would save some space but cost time... */
unsigned int restarts_to_go; /* MCUs left in this restart interval */
int next_restart_num; /* next restart number to write (0-7) */
/* Pointers to derived tables (these workspaces have image lifespan).
* Since any one scan codes only DC or only AC, we only need one set
* of tables, not one for DC and one for AC.
*/
c_derived_tbl * derived_tbls[NUM_HUFF_TBLS];
/* Statistics tables for optimization; again, one set is enough */
long * count_ptrs[NUM_HUFF_TBLS];
} phuff_entropy_encoder;
typedef phuff_entropy_encoder * phuff_entropy_ptr;
/* MAX_CORR_BITS is the number of bits the AC refinement correction-bit
* buffer can hold. Larger sizes may slightly improve compression, but
* 1000 is already well into the realm of overkill.
* The minimum safe size is 64 bits.
*/
#define MAX_CORR_BITS 1000 /* Max # of correction bits I can buffer */
/* IRIGHT_SHIFT is like RIGHT_SHIFT, but works on int rather than INT32.
* We assume that int right shift is unsigned if INT32 right shift is,
* which should be safe.
*/
#ifdef RIGHT_SHIFT_IS_UNSIGNED
#define ISHIFT_TEMPS int ishift_temp;
#define IRIGHT_SHIFT(x,shft) \
((ishift_temp = (x)) < 0 ? \
(ishift_temp >> (shft)) | ((~0) << (16-(shft))) : \
(ishift_temp >> (shft)))
#else
#define ISHIFT_TEMPS
#define IRIGHT_SHIFT(x,shft) ((x) >> (shft))
#endif
/* Forward declarations */
METHODDEF boolean encode_mcu_DC_first JPP((j_compress_ptr cinfo,
JBLOCKROW *MCU_data));
METHODDEF boolean encode_mcu_AC_first JPP((j_compress_ptr cinfo,
JBLOCKROW *MCU_data));
METHODDEF boolean encode_mcu_DC_refine JPP((j_compress_ptr cinfo,
JBLOCKROW *MCU_data));
METHODDEF boolean encode_mcu_AC_refine JPP((j_compress_ptr cinfo,
JBLOCKROW *MCU_data));
METHODDEF void finish_pass_phuff JPP((j_compress_ptr cinfo));
METHODDEF void finish_pass_gather_phuff JPP((j_compress_ptr cinfo));
/*
* Initialize for a Huffman-compressed scan using progressive JPEG.
*/
METHODDEF void
start_pass_phuff (j_compress_ptr cinfo, boolean gather_statistics)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
boolean is_DC_band;
int ci, tbl;
jpeg_component_info * compptr;
entropy->cinfo = cinfo;
entropy->gather_statistics = gather_statistics;
is_DC_band = (cinfo->Ss == 0);
/* We assume jcmaster.c already validated the scan parameters. */
/* Select execution routines */
if (cinfo->Ah == 0) {
if (is_DC_band)
entropy->pub.encode_mcu = encode_mcu_DC_first;
else
entropy->pub.encode_mcu = encode_mcu_AC_first;
} else {
if (is_DC_band)
entropy->pub.encode_mcu = encode_mcu_DC_refine;
else {
entropy->pub.encode_mcu = encode_mcu_AC_refine;
/* AC refinement needs a correction bit buffer */
if (entropy->bit_buffer == NULL)
entropy->bit_buffer = (char *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
MAX_CORR_BITS * SIZEOF(char));
}
}
if (gather_statistics)
entropy->pub.finish_pass = finish_pass_gather_phuff;
else
entropy->pub.finish_pass = finish_pass_phuff;
/* Only DC coefficients may be interleaved, so cinfo->comps_in_scan = 1
* for AC coefficients.
*/
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
/* Initialize DC predictions to 0 */
entropy->last_dc_val[ci] = 0;
/* Make sure requested tables are present */
/* (In gather mode, tables need not be allocated yet) */
if (is_DC_band) {
if (cinfo->Ah != 0) /* DC refinement needs no table */
continue;
tbl = compptr->dc_tbl_no;
if (tbl < 0 || tbl >= NUM_HUFF_TBLS ||
(cinfo->dc_huff_tbl_ptrs[tbl] == NULL && !gather_statistics))
ERREXIT1(cinfo,JERR_NO_HUFF_TABLE, tbl);
} else {
entropy->ac_tbl_no = tbl = compptr->ac_tbl_no;
if (tbl < 0 || tbl >= NUM_HUFF_TBLS ||
(cinfo->ac_huff_tbl_ptrs[tbl] == NULL && !gather_statistics))
ERREXIT1(cinfo,JERR_NO_HUFF_TABLE, tbl);
}
if (gather_statistics) {
/* Allocate and zero the statistics tables */
/* Note that jpeg_gen_optimal_table expects 257 entries in each table! */
if (entropy->count_ptrs[tbl] == NULL)
entropy->count_ptrs[tbl] = (long *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
257 * SIZEOF(long));
MEMZERO(entropy->count_ptrs[tbl], 257 * SIZEOF(long));
} else {
/* Compute derived values for Huffman tables */
/* We may do this more than once for a table, but it's not expensive */
if (is_DC_band)
jpeg_make_c_derived_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[tbl],
& entropy->derived_tbls[tbl]);
else
jpeg_make_c_derived_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[tbl],
& entropy->derived_tbls[tbl]);
}
}
/* Initialize AC stuff */
entropy->EOBRUN = 0;
entropy->BE = 0;
/* Initialize bit buffer to empty */
entropy->put_buffer = 0;
entropy->put_bits = 0;
/* Initialize restart stuff */
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num = 0;
}
/* Outputting bytes to the file.
* NB: these must be called only when actually outputting,
* that is, entropy->gather_statistics == FALSE.
*/
/* Emit a byte */
#define emit_byte(entropy,val) \
{ *(entropy)->next_output_byte++ = (JOCTET) (val); \
if (--(entropy)->free_in_buffer == 0) \
dump_buffer(entropy); }
LOCAL void
dump_buffer (phuff_entropy_ptr entropy)
/* Empty the output buffer; we do not support suspension in this module. */
{
struct jpeg_destination_mgr * dest = entropy->cinfo->dest;
if (! (*dest->empty_output_buffer) (entropy->cinfo))
ERREXIT(entropy->cinfo, JERR_CANT_SUSPEND);
/* After a successful buffer dump, must reset buffer pointers */
entropy->next_output_byte = dest->next_output_byte;
entropy->free_in_buffer = dest->free_in_buffer;
}
/* Outputting bits to the file */
/* Only the right 24 bits of put_buffer are used; the valid bits are
* left-justified in this part. At most 16 bits can be passed to emit_bits
* in one call, and we never retain more than 7 bits in put_buffer
* between calls, so 24 bits are sufficient.
*/
INLINE
LOCAL void
emit_bits (phuff_entropy_ptr entropy, unsigned int code, int size)
/* Emit some bits, unless we are in gather mode */
{
/* This routine is heavily used, so it's worth coding tightly. */
register INT32 put_buffer = (INT32) code;
register int put_bits = entropy->put_bits;
/* if size is 0, caller used an invalid Huffman table entry */
if (size == 0)
ERREXIT(entropy->cinfo, JERR_HUFF_MISSING_CODE);
if (entropy->gather_statistics)
return; /* do nothing if we're only getting stats */
put_buffer &= (((INT32) 1)<<size) - 1; /* mask off any extra bits in code */
put_bits += size; /* new number of bits in buffer */
put_buffer <<= 24 - put_bits; /* align incoming bits */
put_buffer |= entropy->put_buffer; /* and merge with old buffer contents */
while (put_bits >= 8) {
int c = (int) ((put_buffer >> 16) & 0xFF);
emit_byte(entropy, c);
if (c == 0xFF) { /* need to stuff a zero byte? */
emit_byte(entropy, 0);
}
put_buffer <<= 8;
put_bits -= 8;
}
entropy->put_buffer = put_buffer; /* update variables */
entropy->put_bits = put_bits;
}
LOCAL void
flush_bits (phuff_entropy_ptr entropy)
{
emit_bits(entropy, 0x7F, 7); /* fill any partial byte with ones */
entropy->put_buffer = 0; /* and reset bit-buffer to empty */
entropy->put_bits = 0;
}
/*
* Emit (or just count) a Huffman symbol.
*/
INLINE
LOCAL void
emit_symbol (phuff_entropy_ptr entropy, int tbl_no, int symbol)
{
if (entropy->gather_statistics)
entropy->count_ptrs[tbl_no][symbol]++;
else {
c_derived_tbl * tbl = entropy->derived_tbls[tbl_no];
emit_bits(entropy, tbl->ehufco[symbol], tbl->ehufsi[symbol]);
}
}
/*
* Emit bits from a correction bit buffer.
*/
LOCAL void
emit_buffered_bits (phuff_entropy_ptr entropy, char * bufstart,
unsigned int nbits)
{
if (entropy->gather_statistics)
return; /* no real work */
while (nbits > 0) {
emit_bits(entropy, (unsigned int) (*bufstart), 1);
bufstart++;
nbits--;
}
}
/*
* Emit any pending EOBRUN symbol.
*/
LOCAL void
emit_eobrun (phuff_entropy_ptr entropy)
{
register int temp, nbits;
if (entropy->EOBRUN > 0) { /* if there is any pending EOBRUN */
temp = entropy->EOBRUN;
nbits = 0;
while ((temp >>= 1))
nbits++;
emit_symbol(entropy, entropy->ac_tbl_no, nbits << 4);
if (nbits)
emit_bits(entropy, entropy->EOBRUN, nbits);
entropy->EOBRUN = 0;
/* Emit any buffered correction bits */
emit_buffered_bits(entropy, entropy->bit_buffer, entropy->BE);
entropy->BE = 0;
}
}
/*
* Emit a restart marker & resynchronize predictions.
*/
LOCAL void
emit_restart (phuff_entropy_ptr entropy, int restart_num)
{
int ci;
emit_eobrun(entropy);
if (! entropy->gather_statistics) {
flush_bits(entropy);
emit_byte(entropy, 0xFF);
emit_byte(entropy, JPEG_RST0 + restart_num);
}
if (entropy->cinfo->Ss == 0) {
/* Re-initialize DC predictions to 0 */
for (ci = 0; ci < entropy->cinfo->comps_in_scan; ci++)
entropy->last_dc_val[ci] = 0;
} else {
/* Re-initialize all AC-related fields to 0 */
entropy->EOBRUN = 0;
entropy->BE = 0;
}
}
/*
* MCU encoding for DC initial scan (either spectral selection,
* or first pass of successive approximation).
*/
METHODDEF boolean
encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
register int temp, temp2;
register int nbits;
int blkn, ci;
int Al = cinfo->Al;
JBLOCKROW block;
jpeg_component_info * compptr;
ISHIFT_TEMPS
entropy->next_output_byte = cinfo->dest->next_output_byte;
entropy->free_in_buffer = cinfo->dest->free_in_buffer;
/* Emit restart marker if needed */
if (cinfo->restart_interval)
if (entropy->restarts_to_go == 0)
emit_restart(entropy, entropy->next_restart_num);
/* Encode the MCU data blocks */
for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
block = MCU_data[blkn];
ci = cinfo->MCU_membership[blkn];
compptr = cinfo->cur_comp_info[ci];
/* Compute the DC value after the required point transform by Al.
* This is simply an arithmetic right shift.
*/
temp2 = IRIGHT_SHIFT((int) ((*block)[0]), Al);
/* DC differences are figured on the point-transformed values. */
temp = temp2 - entropy->last_dc_val[ci];
entropy->last_dc_val[ci] = temp2;
/* Encode the DC coefficient difference per section G.1.2.1 */
temp2 = temp;
if (temp < 0) {
temp = -temp; /* temp is abs value of input */
/* For a negative input, want temp2 = bitwise complement of abs(input) */
/* This code assumes we are on a two's complement machine */
temp2--;
}
/* Find the number of bits needed for the magnitude of the coefficient */
nbits = 0;
while (temp) {
nbits++;
temp >>= 1;
}
/* Count/emit the Huffman-coded symbol for the number of bits */
emit_symbol(entropy, compptr->dc_tbl_no, nbits);
/* Emit that number of bits of the value, if positive, */
/* or the complement of its magnitude, if negative. */
if (nbits) /* emit_bits rejects calls with size 0 */
emit_bits(entropy, (unsigned int) temp2, nbits);
}
cinfo->dest->next_output_byte = entropy->next_output_byte;
cinfo->dest->free_in_buffer = entropy->free_in_buffer;
/* Update restart-interval state too */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0) {
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num++;
entropy->next_restart_num &= 7;
}
entropy->restarts_to_go--;
}
return TRUE;
}
/*
* MCU encoding for AC initial scan (either spectral selection,
* or first pass of successive approximation).
*/
METHODDEF boolean
encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
register int temp, temp2;
register int nbits;
register int r, k;
int Se = cinfo->Se;
int Al = cinfo->Al;
JBLOCKROW block;
entropy->next_output_byte = cinfo->dest->next_output_byte;
entropy->free_in_buffer = cinfo->dest->free_in_buffer;
/* Emit restart marker if needed */
if (cinfo->restart_interval)
if (entropy->restarts_to_go == 0)
emit_restart(entropy, entropy->next_restart_num);
/* Encode the MCU data block */
block = MCU_data[0];
/* Encode the AC coefficients per section G.1.2.2, fig. G.3 */
r = 0; /* r = run length of zeros */
for (k = cinfo->Ss; k <= Se; k++) {
if ((temp = (*block)[jpeg_natural_order[k]]) == 0) {
r++;
continue;
}
/* We must apply the point transform by Al. For AC coefficients this
* is an integer division with rounding towards 0. To do this portably
* in C, we shift after obtaining the absolute value; so the code is
* interwoven with finding the abs value (temp) and output bits (temp2).
*/
if (temp < 0) {
temp = -temp; /* temp is abs value of input */
temp >>= Al; /* apply the point transform */
/* For a negative coef, want temp2 = bitwise complement of abs(coef) */
temp2 = ~temp;
} else {
temp >>= Al; /* apply the point transform */
temp2 = temp;
}
/* Watch out for case that nonzero coef is zero after point transform */
if (temp == 0) {
r++;
continue;
}
/* Emit any pending EOBRUN */
if (entropy->EOBRUN > 0)
emit_eobrun(entropy);
/* if run length > 15, must emit special run-length-16 codes (0xF0) */
while (r > 15) {
emit_symbol(entropy, entropy->ac_tbl_no, 0xF0);
r -= 16;
}
/* Find the number of bits needed for the magnitude of the coefficient */
nbits = 1; /* there must be at least one 1 bit */
while ((temp >>= 1))
nbits++;
/* Count/emit Huffman symbol for run length / number of bits */
emit_symbol(entropy, entropy->ac_tbl_no, (r << 4) + nbits);
/* Emit that number of bits of the value, if positive, */
/* or the complement of its magnitude, if negative. */
emit_bits(entropy, (unsigned int) temp2, nbits);
r = 0; /* reset zero run length */
}
if (r > 0) { /* If there are trailing zeroes, */
entropy->EOBRUN++; /* count an EOB */
if (entropy->EOBRUN == 0x7FFF)
emit_eobrun(entropy); /* force it out to avoid overflow */
}
cinfo->dest->next_output_byte = entropy->next_output_byte;
cinfo->dest->free_in_buffer = entropy->free_in_buffer;
/* Update restart-interval state too */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0) {
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num++;
entropy->next_restart_num &= 7;
}
entropy->restarts_to_go--;
}
return TRUE;
}
/*
* MCU encoding for DC successive approximation refinement scan.
* Note: we assume such scans can be multi-component, although the spec
* is not very clear on the point.
*/
METHODDEF boolean
encode_mcu_DC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
register int temp;
int blkn;
int Al = cinfo->Al;
JBLOCKROW block;
entropy->next_output_byte = cinfo->dest->next_output_byte;
entropy->free_in_buffer = cinfo->dest->free_in_buffer;
/* Emit restart marker if needed */
if (cinfo->restart_interval)
if (entropy->restarts_to_go == 0)
emit_restart(entropy, entropy->next_restart_num);
/* Encode the MCU data blocks */
for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
block = MCU_data[blkn];
/* We simply emit the Al'th bit of the DC coefficient value. */
temp = (*block)[0];
emit_bits(entropy, (unsigned int) (temp >> Al), 1);
}
cinfo->dest->next_output_byte = entropy->next_output_byte;
cinfo->dest->free_in_buffer = entropy->free_in_buffer;
/* Update restart-interval state too */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0) {
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num++;
entropy->next_restart_num &= 7;
}
entropy->restarts_to_go--;
}
return TRUE;
}
/*
* MCU encoding for AC successive approximation refinement scan.
*/
METHODDEF boolean
encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
register int temp;
register int r, k;
int EOB;
char *BR_buffer;
unsigned int BR;
int Se = cinfo->Se;
int Al = cinfo->Al;
JBLOCKROW block;
int absvalues[DCTSIZE2];
entropy->next_output_byte = cinfo->dest->next_output_byte;
entropy->free_in_buffer = cinfo->dest->free_in_buffer;
/* Emit restart marker if needed */
if (cinfo->restart_interval)
if (entropy->restarts_to_go == 0)
emit_restart(entropy, entropy->next_restart_num);
/* Encode the MCU data block */
block = MCU_data[0];
/* It is convenient to make a pre-pass to determine the transformed
* coefficients' absolute values and the EOB position.
*/
EOB = 0;
for (k = cinfo->Ss; k <= Se; k++) {
temp = (*block)[jpeg_natural_order[k]];
/* We must apply the point transform by Al. For AC coefficients this
* is an integer division with rounding towards 0. To do this portably
* in C, we shift after obtaining the absolute value.
*/
if (temp < 0)
temp = -temp; /* temp is abs value of input */
temp >>= Al; /* apply the point transform */
absvalues[k] = temp; /* save abs value for main pass */
if (temp == 1)
EOB = k; /* EOB = index of last newly-nonzero coef */
}
/* Encode the AC coefficients per section G.1.2.3, fig. G.7 */
r = 0; /* r = run length of zeros */
BR = 0; /* BR = count of buffered bits added now */
BR_buffer = entropy->bit_buffer + entropy->BE; /* Append bits to buffer */
for (k = cinfo->Ss; k <= Se; k++) {
if ((temp = absvalues[k]) == 0) {
r++;
continue;
}
/* Emit any required ZRLs, but not if they can be folded into EOB */
while (r > 15 && k <= EOB) {
/* emit any pending EOBRUN and the BE correction bits */
emit_eobrun(entropy);
/* Emit ZRL */
emit_symbol(entropy, entropy->ac_tbl_no, 0xF0);
r -= 16;
/* Emit buffered correction bits that must be associated with ZRL */
emit_buffered_bits(entropy, BR_buffer, BR);
BR_buffer = entropy->bit_buffer; /* BE bits are gone now */
BR = 0;
}
/* If the coef was previously nonzero, it only needs a correction bit.
* NOTE: a straight translation of the spec's figure G.7 would suggest
* that we also need to test r > 15. But if r > 15, we can only get here
* if k > EOB, which implies that this coefficient is not 1.
*/
if (temp > 1) {
/* The correction bit is the next bit of the absolute value. */
BR_buffer[BR++] = (char) (temp & 1);
continue;
}
/* Emit any pending EOBRUN and the BE correction bits */
emit_eobrun(entropy);
/* Count/emit Huffman symbol for run length / number of bits */
emit_symbol(entropy, entropy->ac_tbl_no, (r << 4) + 1);
/* Emit output bit for newly-nonzero coef */
temp = ((*block)[jpeg_natural_order[k]] < 0) ? 0 : 1;
emit_bits(entropy, (unsigned int) temp, 1);
/* Emit buffered correction bits that must be associated with this code */
emit_buffered_bits(entropy, BR_buffer, BR);
BR_buffer = entropy->bit_buffer; /* BE bits are gone now */
BR = 0;
r = 0; /* reset zero run length */
}
if (r > 0 || BR > 0) { /* If there are trailing zeroes, */
entropy->EOBRUN++; /* count an EOB */
entropy->BE += BR; /* concat my correction bits to older ones */
/* We force out the EOB if we risk either:
* 1. overflow of the EOB counter;
* 2. overflow of the correction bit buffer during the next MCU.
*/
if (entropy->EOBRUN == 0x7FFF || entropy->BE > (MAX_CORR_BITS-DCTSIZE2+1))
emit_eobrun(entropy);
}
cinfo->dest->next_output_byte = entropy->next_output_byte;
cinfo->dest->free_in_buffer = entropy->free_in_buffer;
/* Update restart-interval state too */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0) {
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num++;
entropy->next_restart_num &= 7;
}
entropy->restarts_to_go--;
}
return TRUE;
}
/*
* Finish up at the end of a Huffman-compressed progressive scan.
*/
METHODDEF void
finish_pass_phuff (j_compress_ptr cinfo)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
entropy->next_output_byte = cinfo->dest->next_output_byte;
entropy->free_in_buffer = cinfo->dest->free_in_buffer;
/* Flush out any buffered data */
emit_eobrun(entropy);
flush_bits(entropy);
cinfo->dest->next_output_byte = entropy->next_output_byte;
cinfo->dest->free_in_buffer = entropy->free_in_buffer;
}
/*
* Finish up a statistics-gathering pass and create the new Huffman tables.
*/
METHODDEF void
finish_pass_gather_phuff (j_compress_ptr cinfo)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
boolean is_DC_band;
int ci, tbl;
jpeg_component_info * compptr;
JHUFF_TBL **htblptr;
boolean did[NUM_HUFF_TBLS];
/* Flush out buffered data (all we care about is counting the EOB symbol) */
emit_eobrun(entropy);
is_DC_band = (cinfo->Ss == 0);
/* It's important not to apply jpeg_gen_optimal_table more than once
* per table, because it clobbers the input frequency counts!
*/
MEMZERO(did, SIZEOF(did));
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
if (is_DC_band) {
if (cinfo->Ah != 0) /* DC refinement needs no table */
continue;
tbl = compptr->dc_tbl_no;
} else {
tbl = compptr->ac_tbl_no;
}
if (! did[tbl]) {
if (is_DC_band)
htblptr = & cinfo->dc_huff_tbl_ptrs[tbl];
else
htblptr = & cinfo->ac_huff_tbl_ptrs[tbl];
if (*htblptr == NULL)
*htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo);
jpeg_gen_optimal_table(cinfo, *htblptr, entropy->count_ptrs[tbl]);
did[tbl] = TRUE;
}
}
}
/*
* Module initialization routine for progressive Huffman entropy encoding.
*/
GLOBAL void
jinit_phuff_encoder (j_compress_ptr cinfo)
{
phuff_entropy_ptr entropy;
int i;
entropy = (phuff_entropy_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(phuff_entropy_encoder));
cinfo->entropy = (struct jpeg_entropy_encoder *) entropy;
entropy->pub.start_pass = start_pass_phuff;
/* Mark tables unallocated */
for (i = 0; i < NUM_HUFF_TBLS; i++) {
entropy->derived_tbls[i] = NULL;
entropy->count_ptrs[i] = NULL;
}
entropy->bit_buffer = NULL; /* needed only in AC refinement scan */
}
#endif /* C_PROGRESSIVE_SUPPORTED */

371
jctrans.c Normal file
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@ -0,0 +1,371 @@
/*
* jctrans.c
*
* Copyright (C) 1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains library routines for transcoding compression,
* that is, writing raw DCT coefficient arrays to an output JPEG file.
* The routines in jcapimin.c will also be needed by a transcoder.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Forward declarations */
LOCAL void transencode_master_selection
JPP((j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays));
LOCAL void transencode_coef_controller
JPP((j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays));
/*
* Compression initialization for writing raw-coefficient data.
* Before calling this, all parameters and a data destination must be set up.
* Call jpeg_finish_compress() to actually write the data.
*
* The number of passed virtual arrays must match cinfo->num_components.
* Note that the virtual arrays need not be filled or even realized at
* the time write_coefficients is called; indeed, if the virtual arrays
* were requested from this compression object's memory manager, they
* typically will be realized during this routine and filled afterwards.
*/
GLOBAL void
jpeg_write_coefficients (j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays)
{
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Mark all tables to be written */
jpeg_suppress_tables(cinfo, FALSE);
/* (Re)initialize error mgr and destination modules */
(*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
(*cinfo->dest->init_destination) (cinfo);
/* Perform master selection of active modules */
transencode_master_selection(cinfo, coef_arrays);
/* Wait for jpeg_finish_compress() call */
cinfo->next_scanline = 0; /* so jpeg_write_marker works */
cinfo->global_state = CSTATE_WRCOEFS;
}
/*
* Initialize the compression object with default parameters,
* then copy from the source object all parameters needed for lossless
* transcoding. Parameters that can be varied without loss (such as
* scan script and Huffman optimization) are left in their default states.
*/
GLOBAL void
jpeg_copy_critical_parameters (j_decompress_ptr srcinfo,
j_compress_ptr dstinfo)
{
JQUANT_TBL ** qtblptr;
jpeg_component_info *incomp, *outcomp;
JQUANT_TBL *c_quant, *slot_quant;
int tblno, ci, coefi;
/* Safety check to ensure start_compress not called yet. */
if (dstinfo->global_state != CSTATE_START)
ERREXIT1(dstinfo, JERR_BAD_STATE, dstinfo->global_state);
/* Copy fundamental image dimensions */
dstinfo->image_width = srcinfo->image_width;
dstinfo->image_height = srcinfo->image_height;
dstinfo->input_components = srcinfo->num_components;
dstinfo->in_color_space = srcinfo->jpeg_color_space;
/* Initialize all parameters to default values */
jpeg_set_defaults(dstinfo);
/* jpeg_set_defaults may choose wrong colorspace, eg YCbCr if input is RGB.
* Fix it to get the right header markers for the image colorspace.
*/
jpeg_set_colorspace(dstinfo, srcinfo->jpeg_color_space);
dstinfo->data_precision = srcinfo->data_precision;
dstinfo->CCIR601_sampling = srcinfo->CCIR601_sampling;
/* Copy the source's quantization tables. */
for (tblno = 0; tblno < NUM_QUANT_TBLS; tblno++) {
if (srcinfo->quant_tbl_ptrs[tblno] != NULL) {
qtblptr = & dstinfo->quant_tbl_ptrs[tblno];
if (*qtblptr == NULL)
*qtblptr = jpeg_alloc_quant_table((j_common_ptr) dstinfo);
MEMCOPY((*qtblptr)->quantval,
srcinfo->quant_tbl_ptrs[tblno]->quantval,
SIZEOF((*qtblptr)->quantval));
(*qtblptr)->sent_table = FALSE;
}
}
/* Copy the source's per-component info.
* Note we assume jpeg_set_defaults has allocated the dest comp_info array.
*/
dstinfo->num_components = srcinfo->num_components;
if (dstinfo->num_components < 1 || dstinfo->num_components > MAX_COMPONENTS)
ERREXIT2(dstinfo, JERR_COMPONENT_COUNT, dstinfo->num_components,
MAX_COMPONENTS);
for (ci = 0, incomp = srcinfo->comp_info, outcomp = dstinfo->comp_info;
ci < dstinfo->num_components; ci++, incomp++, outcomp++) {
outcomp->component_id = incomp->component_id;
outcomp->h_samp_factor = incomp->h_samp_factor;
outcomp->v_samp_factor = incomp->v_samp_factor;
outcomp->quant_tbl_no = incomp->quant_tbl_no;
/* Make sure saved quantization table for component matches the qtable
* slot. If not, the input file re-used this qtable slot.
* IJG encoder currently cannot duplicate this.
*/
tblno = outcomp->quant_tbl_no;
if (tblno < 0 || tblno >= NUM_QUANT_TBLS ||
srcinfo->quant_tbl_ptrs[tblno] == NULL)
ERREXIT1(dstinfo, JERR_NO_QUANT_TABLE, tblno);
slot_quant = srcinfo->quant_tbl_ptrs[tblno];
c_quant = incomp->quant_table;
if (c_quant != NULL) {
for (coefi = 0; coefi < DCTSIZE2; coefi++) {
if (c_quant->quantval[coefi] != slot_quant->quantval[coefi])
ERREXIT1(dstinfo, JERR_MISMATCHED_QUANT_TABLE, tblno);
}
}
/* Note: we do not copy the source's Huffman table assignments;
* instead we rely on jpeg_set_colorspace to have made a suitable choice.
*/
}
}
/*
* Master selection of compression modules for transcoding.
* This substitutes for jcinit.c's initialization of the full compressor.
*/
LOCAL void
transencode_master_selection (j_compress_ptr cinfo,
jvirt_barray_ptr * coef_arrays)
{
/* Although we don't actually use input_components for transcoding,
* jcmaster.c's initial_setup will complain if input_components is 0.
*/
cinfo->input_components = 1;
/* Initialize master control (includes parameter checking/processing) */
jinit_c_master_control(cinfo, TRUE /* transcode only */);
/* Entropy encoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code) {
ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
} else {
if (cinfo->progressive_mode) {
#ifdef C_PROGRESSIVE_SUPPORTED
jinit_phuff_encoder(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else
jinit_huff_encoder(cinfo);
}
/* We need a special coefficient buffer controller. */
transencode_coef_controller(cinfo, coef_arrays);
jinit_marker_writer(cinfo);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
/* Write the datastream header (SOI) immediately.
* Frame and scan headers are postponed till later.
* This lets application insert special markers after the SOI.
*/
(*cinfo->marker->write_file_header) (cinfo);
}
/*
* The rest of this file is a special implementation of the coefficient
* buffer controller. This is similar to jccoefct.c, but it handles only
* output from presupplied virtual arrays. Furthermore, we generate any
* dummy padding blocks on-the-fly rather than expecting them to be present
* in the arrays.
*/
/* Private buffer controller object */
typedef struct {
struct jpeg_c_coef_controller pub; /* public fields */
JDIMENSION iMCU_row_num; /* iMCU row # within image */
JDIMENSION mcu_ctr; /* counts MCUs processed in current row */
int MCU_vert_offset; /* counts MCU rows within iMCU row */
int MCU_rows_per_iMCU_row; /* number of such rows needed */
/* Virtual block array for each component. */
jvirt_barray_ptr * whole_image;
/* Workspace for constructing dummy blocks at right/bottom edges. */
JBLOCKROW dummy_buffer[C_MAX_BLOCKS_IN_MCU];
} my_coef_controller;
typedef my_coef_controller * my_coef_ptr;
LOCAL void
start_iMCU_row (j_compress_ptr cinfo)
/* Reset within-iMCU-row counters for a new row */
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
/* In an interleaved scan, an MCU row is the same as an iMCU row.
* In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows.
* But at the bottom of the image, process only what's left.
*/
if (cinfo->comps_in_scan > 1) {
coef->MCU_rows_per_iMCU_row = 1;
} else {
if (coef->iMCU_row_num < (cinfo->total_iMCU_rows-1))
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;
else
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height;
}
coef->mcu_ctr = 0;
coef->MCU_vert_offset = 0;
}
/*
* Initialize for a processing pass.
*/
METHODDEF void
start_pass_coef (j_compress_ptr cinfo, J_BUF_MODE pass_mode)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
if (pass_mode != JBUF_CRANK_DEST)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
coef->iMCU_row_num = 0;
start_iMCU_row(cinfo);
}
/*
* Process some data.
* We process the equivalent of one fully interleaved MCU row ("iMCU" row)
* per call, ie, v_samp_factor block rows for each component in the scan.
* The data is obtained from the virtual arrays and fed to the entropy coder.
* Returns TRUE if the iMCU row is completed, FALSE if suspended.
*
* NB: input_buf is ignored; it is likely to be a NULL pointer.
*/
METHODDEF boolean
compress_output (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
JDIMENSION MCU_col_num; /* index of current MCU within row */
JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1;
JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
int blkn, ci, xindex, yindex, yoffset, blockcnt;
JDIMENSION start_col;
JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN];
JBLOCKROW MCU_buffer[C_MAX_BLOCKS_IN_MCU];
JBLOCKROW buffer_ptr;
jpeg_component_info *compptr;
/* Align the virtual buffers for the components used in this scan. */
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
buffer[ci] = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],
coef->iMCU_row_num * compptr->v_samp_factor,
(JDIMENSION) compptr->v_samp_factor, FALSE);
}
/* Loop to process one whole iMCU row */
for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;
yoffset++) {
for (MCU_col_num = coef->mcu_ctr; MCU_col_num < cinfo->MCUs_per_row;
MCU_col_num++) {
/* Construct list of pointers to DCT blocks belonging to this MCU */
blkn = 0; /* index of current DCT block within MCU */
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
start_col = MCU_col_num * compptr->MCU_width;
blockcnt = (MCU_col_num < last_MCU_col) ? compptr->MCU_width
: compptr->last_col_width;
for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
if (coef->iMCU_row_num < last_iMCU_row ||
yindex+yoffset < compptr->last_row_height) {
/* Fill in pointers to real blocks in this row */
buffer_ptr = buffer[ci][yindex+yoffset] + start_col;
for (xindex = 0; xindex < blockcnt; xindex++)
MCU_buffer[blkn++] = buffer_ptr++;
} else {
/* At bottom of image, need a whole row of dummy blocks */
xindex = 0;
}
/* Fill in any dummy blocks needed in this row.
* Dummy blocks are filled in the same way as in jccoefct.c:
* all zeroes in the AC entries, DC entries equal to previous
* block's DC value. The init routine has already zeroed the
* AC entries, so we need only set the DC entries correctly.
*/
for (; xindex < compptr->MCU_width; xindex++) {
MCU_buffer[blkn] = coef->dummy_buffer[blkn];
MCU_buffer[blkn][0][0] = MCU_buffer[blkn-1][0][0];
blkn++;
}
}
}
/* Try to write the MCU. */
if (! (*cinfo->entropy->encode_mcu) (cinfo, MCU_buffer)) {
/* Suspension forced; update state counters and exit */
coef->MCU_vert_offset = yoffset;
coef->mcu_ctr = MCU_col_num;
return FALSE;
}
}
/* Completed an MCU row, but perhaps not an iMCU row */
coef->mcu_ctr = 0;
}
/* Completed the iMCU row, advance counters for next one */
coef->iMCU_row_num++;
start_iMCU_row(cinfo);
return TRUE;
}
/*
* Initialize coefficient buffer controller.
*
* Each passed coefficient array must be the right size for that
* coefficient: width_in_blocks wide and height_in_blocks high,
* with unitheight at least v_samp_factor.
*/
LOCAL void
transencode_coef_controller (j_compress_ptr cinfo,
jvirt_barray_ptr * coef_arrays)
{
my_coef_ptr coef;
JBLOCKROW buffer;
int i;
coef = (my_coef_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_coef_controller));
cinfo->coef = (struct jpeg_c_coef_controller *) coef;
coef->pub.start_pass = start_pass_coef;
coef->pub.compress_data = compress_output;
/* Save pointer to virtual arrays */
coef->whole_image = coef_arrays;
/* Allocate and pre-zero space for dummy DCT blocks. */
buffer = (JBLOCKROW)
(*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE,
C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
jzero_far((void FAR *) buffer, C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
for (i = 0; i < C_MAX_BLOCKS_IN_MCU; i++) {
coef->dummy_buffer[i] = buffer + i;
}
}

294
jdapi.c → jdapimin.c
View File

@ -1,14 +1,19 @@
/*
* jdapi.c
* jdapimin.c
*
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains application interface code for the decompression half of
* the JPEG library. Most of the routines intended to be called directly by
* an application are in this file. But also see jcomapi.c for routines
* shared by compression and decompression.
* This file contains application interface code for the decompression half
* of the JPEG library. These are the "minimum" API routines that may be
* needed in either the normal full-decompression case or the
* transcoding-only case.
*
* Most of the routines intended to be called directly by an application
* are in this file or in jdapistd.c. But also see jcomapi.c for routines
* shared by compression and decompression, and jdtrans.c for the transcoding
* case.
*/
#define JPEG_INTERNALS
@ -51,14 +56,14 @@ jpeg_create_decompress (j_decompress_ptr cinfo)
cinfo->ac_huff_tbl_ptrs[i] = NULL;
}
cinfo->sample_range_limit = NULL;
/* Initialize marker processor so application can override methods
* for COM, APPn markers before calling jpeg_read_header.
*/
cinfo->marker = NULL;
jinit_marker_reader(cinfo);
/* And initialize the overall input controller. */
jinit_input_controller(cinfo);
/* OK, I'm ready */
cinfo->global_state = DSTATE_START;
}
@ -75,6 +80,18 @@ jpeg_destroy_decompress (j_decompress_ptr cinfo)
}
/*
* Abort processing of a JPEG decompression operation,
* but don't destroy the object itself.
*/
GLOBAL void
jpeg_abort_decompress (j_decompress_ptr cinfo)
{
jpeg_abort((j_common_ptr) cinfo); /* use common routine */
}
/*
* Install a special processing method for COM or APPn markers.
*/
@ -174,16 +191,25 @@ default_decompress_parms (j_decompress_ptr cinfo)
cinfo->scale_num = 1; /* 1:1 scaling */
cinfo->scale_denom = 1;
cinfo->output_gamma = 1.0;
cinfo->buffered_image = FALSE;
cinfo->raw_data_out = FALSE;
cinfo->quantize_colors = FALSE;
/* We set these in case application only sets quantize_colors. */
cinfo->two_pass_quantize = TRUE;
cinfo->dither_mode = JDITHER_FS;
cinfo->desired_number_of_colors = 256;
cinfo->colormap = NULL;
/* DCT algorithm preference */
cinfo->dct_method = JDCT_DEFAULT;
cinfo->do_fancy_upsampling = TRUE;
cinfo->do_block_smoothing = TRUE;
cinfo->quantize_colors = FALSE;
/* We set these in case application only sets quantize_colors. */
cinfo->dither_mode = JDITHER_FS;
#ifdef QUANT_2PASS_SUPPORTED
cinfo->two_pass_quantize = TRUE;
#else
cinfo->two_pass_quantize = FALSE;
#endif
cinfo->desired_number_of_colors = 256;
cinfo->colormap = NULL;
/* Initialize for no mode change in buffered-image mode. */
cinfo->enable_1pass_quant = FALSE;
cinfo->enable_external_quant = FALSE;
cinfo->enable_2pass_quant = FALSE;
}
@ -209,6 +235,9 @@ default_decompress_parms (j_decompress_ptr cinfo)
* processing.
* If a non-suspending data source is used and require_image is TRUE, then the
* return code need not be inspected since only JPEG_HEADER_OK is possible.
*
* This routine is now just a front end to jpeg_consume_input, with some
* extra error checking.
*/
GLOBAL int
@ -216,39 +245,27 @@ jpeg_read_header (j_decompress_ptr cinfo, boolean require_image)
{
int retcode;
if (cinfo->global_state == DSTATE_START) {
/* First-time actions: reset appropriate modules */
(*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
(*cinfo->marker->reset_marker_reader) (cinfo);
(*cinfo->src->init_source) (cinfo);
cinfo->global_state = DSTATE_INHEADER;
} else if (cinfo->global_state != DSTATE_INHEADER) {
if (cinfo->global_state != DSTATE_START &&
cinfo->global_state != DSTATE_INHEADER)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
}
retcode = (*cinfo->marker->read_markers) (cinfo);
retcode = jpeg_consume_input(cinfo);
switch (retcode) {
case JPEG_HEADER_OK: /* Found SOS, prepare to decompress */
/* Set up default parameters based on header data */
default_decompress_parms(cinfo);
/* Set global state: ready for start_decompress */
cinfo->global_state = DSTATE_READY;
case JPEG_REACHED_SOS:
retcode = JPEG_HEADER_OK;
break;
case JPEG_HEADER_TABLES_ONLY: /* Found EOI before any SOS */
if (cinfo->marker->saw_SOF)
ERREXIT(cinfo, JERR_SOF_NO_SOS);
if (require_image) /* Complain if application wants an image */
case JPEG_REACHED_EOI:
if (require_image) /* Complain if application wanted an image */
ERREXIT(cinfo, JERR_NO_IMAGE);
/* We need not do any cleanup since only permanent storage (for DQT, DHT)
* has been allocated.
/* Reset to start state; it would be safer to require the application to
* call jpeg_abort, but we can't change it now for compatibility reasons.
* A side effect is to free any temporary memory (there shouldn't be any).
*/
/* Set global state: ready for a new datastream */
cinfo->global_state = DSTATE_START;
jpeg_abort((j_common_ptr) cinfo); /* sets state = DSTATE_START */
retcode = JPEG_HEADER_TABLES_ONLY;
break;
case JPEG_SUSPENDED: /* Had to suspend before end of headers */
case JPEG_SUSPENDED:
/* no work */
break;
}
@ -258,128 +275,87 @@ jpeg_read_header (j_decompress_ptr cinfo, boolean require_image)
/*
* Decompression initialization.
* jpeg_read_header must be completed before calling this.
* Consume data in advance of what the decompressor requires.
* This can be called at any time once the decompressor object has
* been created and a data source has been set up.
*
* If a multipass operating mode was selected, this will do all but the
* last pass, and thus may take a great deal of time.
* This routine is essentially a state machine that handles a couple
* of critical state-transition actions, namely initial setup and
* transition from header scanning to ready-for-start_decompress.
* All the actual input is done via the input controller's consume_input
* method.
*/
GLOBAL void
jpeg_start_decompress (j_decompress_ptr cinfo)
GLOBAL int
jpeg_consume_input (j_decompress_ptr cinfo)
{
JDIMENSION chunk_ctr, last_chunk_ctr;
int retcode = JPEG_SUSPENDED;
if (cinfo->global_state != DSTATE_READY)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Perform master selection of active modules */
jinit_master_decompress(cinfo);
/* Do all but the final (output) pass, and set up for that one. */
for (;;) {
(*cinfo->master->prepare_for_pass) (cinfo);
if (cinfo->master->is_last_pass)
break;
chunk_ctr = 0;
while (chunk_ctr < cinfo->main->num_chunks) {
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) chunk_ctr;
cinfo->progress->pass_limit = (long) cinfo->main->num_chunks;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Process some data */
last_chunk_ctr = chunk_ctr;
(*cinfo->main->process_data) (cinfo, (JSAMPARRAY) NULL,
&chunk_ctr, (JDIMENSION) 0);
if (chunk_ctr == last_chunk_ctr) /* check for failure to make progress */
ERREXIT(cinfo, JERR_CANT_SUSPEND);
/* NB: every possible DSTATE value should be listed in this switch */
switch (cinfo->global_state) {
case DSTATE_START:
/* Start-of-datastream actions: reset appropriate modules */
(*cinfo->inputctl->reset_input_controller) (cinfo);
/* Initialize application's data source module */
(*cinfo->src->init_source) (cinfo);
cinfo->global_state = DSTATE_INHEADER;
/*FALLTHROUGH*/
case DSTATE_INHEADER:
retcode = (*cinfo->inputctl->consume_input) (cinfo);
if (retcode == JPEG_REACHED_SOS) { /* Found SOS, prepare to decompress */
/* Set up default parameters based on header data */
default_decompress_parms(cinfo);
/* Set global state: ready for start_decompress */
cinfo->global_state = DSTATE_READY;
}
(*cinfo->master->finish_pass) (cinfo);
break;
case DSTATE_READY:
/* Can't advance past first SOS until start_decompress is called */
retcode = JPEG_REACHED_SOS;
break;
case DSTATE_PRELOAD:
case DSTATE_PRESCAN:
case DSTATE_SCANNING:
case DSTATE_RAW_OK:
case DSTATE_BUFIMAGE:
case DSTATE_BUFPOST:
case DSTATE_STOPPING:
retcode = (*cinfo->inputctl->consume_input) (cinfo);
break;
default:
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
}
/* Ready for application to drive last pass through jpeg_read_scanlines
* or jpeg_read_raw_data.
*/
cinfo->output_scanline = 0;
cinfo->global_state = (cinfo->raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING);
return retcode;
}
/*
* Read some scanlines of data from the JPEG decompressor.
*
* The return value will be the number of lines actually read.
* This may be less than the number requested in several cases,
* including bottom of image, data source suspension, and operating
* modes that emit multiple scanlines at a time.
*
* Note: we warn about excess calls to jpeg_read_scanlines() since
* this likely signals an application programmer error. However,
* an oversize buffer (max_lines > scanlines remaining) is not an error.
* Have we finished reading the input file?
*/
GLOBAL JDIMENSION
jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines,
JDIMENSION max_lines)
GLOBAL boolean
jpeg_input_complete (j_decompress_ptr cinfo)
{
JDIMENSION row_ctr;
if (cinfo->global_state != DSTATE_SCANNING)
/* Check for valid jpeg object */
if (cinfo->global_state < DSTATE_START ||
cinfo->global_state > DSTATE_STOPPING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->output_scanline >= cinfo->output_height)
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Process some data */
row_ctr = 0;
(*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines);
cinfo->output_scanline += row_ctr;
return row_ctr;
return cinfo->inputctl->eoi_reached;
}
/*
* Alternate entry point to read raw data.
* Processes exactly one iMCU row per call, unless suspended.
* Is there more than one scan?
*/
GLOBAL JDIMENSION
jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data,
JDIMENSION max_lines)
GLOBAL boolean
jpeg_has_multiple_scans (j_decompress_ptr cinfo)
{
JDIMENSION lines_per_iMCU_row;
if (cinfo->global_state != DSTATE_RAW_OK)
/* Only valid after jpeg_read_header completes */
if (cinfo->global_state < DSTATE_READY ||
cinfo->global_state > DSTATE_STOPPING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->output_scanline >= cinfo->output_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Verify that at least one iMCU row can be returned. */
lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size;
if (max_lines < lines_per_iMCU_row)
ERREXIT(cinfo, JERR_BUFFER_SIZE);
/* Decompress directly into user's buffer. */
if (! (*cinfo->coef->decompress_data) (cinfo, data))
return 0; /* suspension forced, can do nothing more */
/* OK, we processed one iMCU row. */
cinfo->output_scanline += lines_per_iMCU_row;
return lines_per_iMCU_row;
return cinfo->inputctl->has_multiple_scans;
}
@ -395,28 +371,24 @@ jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data,
GLOBAL boolean
jpeg_finish_decompress (j_decompress_ptr cinfo)
{
if (cinfo->global_state == DSTATE_SCANNING ||
cinfo->global_state == DSTATE_RAW_OK) {
/* Terminate final pass */
if ((cinfo->global_state == DSTATE_SCANNING ||
cinfo->global_state == DSTATE_RAW_OK) && ! cinfo->buffered_image) {
/* Terminate final pass of non-buffered mode */
if (cinfo->output_scanline < cinfo->output_height)
ERREXIT(cinfo, JERR_TOO_LITTLE_DATA);
(*cinfo->master->finish_pass) (cinfo);
(*cinfo->master->finish_output_pass) (cinfo);
cinfo->global_state = DSTATE_STOPPING;
} else if (cinfo->global_state == DSTATE_BUFIMAGE) {
/* Finishing after a buffered-image operation */
cinfo->global_state = DSTATE_STOPPING;
} else if (cinfo->global_state != DSTATE_STOPPING) {
/* Repeat call after a suspension? */
/* STOPPING = repeat call after a suspension, anything else is error */
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
}
/* Check for EOI in source file, unless master control already read it */
if (! cinfo->master->eoi_processed) {
switch ((*cinfo->marker->read_markers) (cinfo)) {
case JPEG_HEADER_OK: /* Found SOS!? */
ERREXIT(cinfo, JERR_EOI_EXPECTED);
break;
case JPEG_HEADER_TABLES_ONLY: /* Found EOI, A-OK */
break;
case JPEG_SUSPENDED: /* Suspend, come back later */
return FALSE;
}
/* Read until EOI */
while (! cinfo->inputctl->eoi_reached) {
if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED)
return FALSE; /* Suspend, come back later */
}
/* Do final cleanup */
(*cinfo->src->term_source) (cinfo);
@ -424,15 +396,3 @@ jpeg_finish_decompress (j_decompress_ptr cinfo)
jpeg_abort((j_common_ptr) cinfo);
return TRUE;
}
/*
* Abort processing of a JPEG decompression operation,
* but don't destroy the object itself.
*/
GLOBAL void
jpeg_abort_decompress (j_decompress_ptr cinfo)
{
jpeg_abort((j_common_ptr) cinfo); /* use common routine */
}

275
jdapistd.c Normal file
View File

@ -0,0 +1,275 @@
/*
* jdapistd.c
*
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains application interface code for the decompression half
* of the JPEG library. These are the "standard" API routines that are
* used in the normal full-decompression case. They are not used by a
* transcoding-only application. Note that if an application links in
* jpeg_start_decompress, it will end up linking in the entire decompressor.
* We thus must separate this file from jdapimin.c to avoid linking the
* whole decompression library into a transcoder.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Forward declarations */
LOCAL boolean output_pass_setup JPP((j_decompress_ptr cinfo));
/*
* Decompression initialization.
* jpeg_read_header must be completed before calling this.
*
* If a multipass operating mode was selected, this will do all but the
* last pass, and thus may take a great deal of time.
*
* Returns FALSE if suspended. The return value need be inspected only if
* a suspending data source is used.
*/
GLOBAL boolean
jpeg_start_decompress (j_decompress_ptr cinfo)
{
if (cinfo->global_state == DSTATE_READY) {
/* First call: initialize master control, select active modules */
jinit_master_decompress(cinfo);
if (cinfo->buffered_image) {
/* No more work here; expecting jpeg_start_output next */
cinfo->global_state = DSTATE_BUFIMAGE;
return TRUE;
}
cinfo->global_state = DSTATE_PRELOAD;
}
if (cinfo->global_state == DSTATE_PRELOAD) {
/* If file has multiple scans, absorb them all into the coef buffer */
if (cinfo->inputctl->has_multiple_scans) {
#ifdef D_MULTISCAN_FILES_SUPPORTED
for (;;) {
int retcode;
/* Call progress monitor hook if present */
if (cinfo->progress != NULL)
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
/* Absorb some more input */
retcode = (*cinfo->inputctl->consume_input) (cinfo);
if (retcode == JPEG_SUSPENDED)
return FALSE;
if (retcode == JPEG_REACHED_EOI)
break;
/* Advance progress counter if appropriate */
if (cinfo->progress != NULL &&
(retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) {
if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {
/* jdmaster underestimated number of scans; ratchet up one scan */
cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows;
}
}
}
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif /* D_MULTISCAN_FILES_SUPPORTED */
}
cinfo->output_scan_number = cinfo->input_scan_number;
} else if (cinfo->global_state != DSTATE_PRESCAN)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Perform any dummy output passes, and set up for the final pass */
return output_pass_setup(cinfo);
}
/*
* Set up for an output pass, and perform any dummy pass(es) needed.
* Common subroutine for jpeg_start_decompress and jpeg_start_output.
* Entry: global_state = DSTATE_PRESCAN only if previously suspended.
* Exit: If done, returns TRUE and sets global_state for proper output mode.
* If suspended, returns FALSE and sets global_state = DSTATE_PRESCAN.
*/
LOCAL boolean
output_pass_setup (j_decompress_ptr cinfo)
{
if (cinfo->global_state != DSTATE_PRESCAN) {
/* First call: do pass setup */
(*cinfo->master->prepare_for_output_pass) (cinfo);
cinfo->output_scanline = 0;
cinfo->global_state = DSTATE_PRESCAN;
}
/* Loop over any required dummy passes */
while (cinfo->master->is_dummy_pass) {
#ifdef QUANT_2PASS_SUPPORTED
/* Crank through the dummy pass */
while (cinfo->output_scanline < cinfo->output_height) {
JDIMENSION last_scanline;
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Process some data */
last_scanline = cinfo->output_scanline;
(*cinfo->main->process_data) (cinfo, (JSAMPARRAY) NULL,
&cinfo->output_scanline, (JDIMENSION) 0);
if (cinfo->output_scanline == last_scanline)
return FALSE; /* No progress made, must suspend */
}
/* Finish up dummy pass, and set up for another one */
(*cinfo->master->finish_output_pass) (cinfo);
(*cinfo->master->prepare_for_output_pass) (cinfo);
cinfo->output_scanline = 0;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif /* QUANT_2PASS_SUPPORTED */
}
/* Ready for application to drive output pass through
* jpeg_read_scanlines or jpeg_read_raw_data.
*/
cinfo->global_state = cinfo->raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING;
return TRUE;
}
/*
* Read some scanlines of data from the JPEG decompressor.
*
* The return value will be the number of lines actually read.
* This may be less than the number requested in several cases,
* including bottom of image, data source suspension, and operating
* modes that emit multiple scanlines at a time.
*
* Note: we warn about excess calls to jpeg_read_scanlines() since
* this likely signals an application programmer error. However,
* an oversize buffer (max_lines > scanlines remaining) is not an error.
*/
GLOBAL JDIMENSION
jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines,
JDIMENSION max_lines)
{
JDIMENSION row_ctr;
if (cinfo->global_state != DSTATE_SCANNING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->output_scanline >= cinfo->output_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Process some data */
row_ctr = 0;
(*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines);
cinfo->output_scanline += row_ctr;
return row_ctr;
}
/*
* Alternate entry point to read raw data.
* Processes exactly one iMCU row per call, unless suspended.
*/
GLOBAL JDIMENSION
jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data,
JDIMENSION max_lines)
{
JDIMENSION lines_per_iMCU_row;
if (cinfo->global_state != DSTATE_RAW_OK)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->output_scanline >= cinfo->output_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Verify that at least one iMCU row can be returned. */
lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size;
if (max_lines < lines_per_iMCU_row)
ERREXIT(cinfo, JERR_BUFFER_SIZE);
/* Decompress directly into user's buffer. */
if (! (*cinfo->coef->decompress_data) (cinfo, data))
return 0; /* suspension forced, can do nothing more */
/* OK, we processed one iMCU row. */
cinfo->output_scanline += lines_per_iMCU_row;
return lines_per_iMCU_row;
}
/* Additional entry points for buffered-image mode. */
#ifdef D_MULTISCAN_FILES_SUPPORTED
/*
* Initialize for an output pass in buffered-image mode.
*/
GLOBAL boolean
jpeg_start_output (j_decompress_ptr cinfo, int scan_number)
{
if (cinfo->global_state != DSTATE_BUFIMAGE &&
cinfo->global_state != DSTATE_PRESCAN)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Limit scan number to valid range */
if (scan_number <= 0)
scan_number = 1;
if (cinfo->inputctl->eoi_reached &&
scan_number > cinfo->input_scan_number)
scan_number = cinfo->input_scan_number;
cinfo->output_scan_number = scan_number;
/* Perform any dummy output passes, and set up for the real pass */
return output_pass_setup(cinfo);
}
/*
* Finish up after an output pass in buffered-image mode.
*
* Returns FALSE if suspended. The return value need be inspected only if
* a suspending data source is used.
*/
GLOBAL boolean
jpeg_finish_output (j_decompress_ptr cinfo)
{
if ((cinfo->global_state == DSTATE_SCANNING ||
cinfo->global_state == DSTATE_RAW_OK) && cinfo->buffered_image) {
/* Terminate this pass. */
/* We do not require the whole pass to have been completed. */
(*cinfo->master->finish_output_pass) (cinfo);
cinfo->global_state = DSTATE_BUFPOST;
} else if (cinfo->global_state != DSTATE_BUFPOST) {
/* BUFPOST = repeat call after a suspension, anything else is error */
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
}
/* Read markers looking for SOS or EOI */
while (cinfo->input_scan_number <= cinfo->output_scan_number &&
! cinfo->inputctl->eoi_reached) {
if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED)
return FALSE; /* Suspend, come back later */
}
cinfo->global_state = DSTATE_BUFIMAGE;
return TRUE;
}
#endif /* D_MULTISCAN_FILES_SUPPORTED */

545
jdcoefct.c
View File

@ -8,56 +8,76 @@
* This file contains the coefficient buffer controller for decompression.
* This controller is the top level of the JPEG decompressor proper.
* The coefficient buffer lies between entropy decoding and inverse-DCT steps.
*
* In buffered-image mode, this controller is the interface between
* input-oriented processing and output-oriented processing.
* Also, the input side (only) is used when reading a file for transcoding.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Block smoothing is only applicable for progressive JPEG, so: */
#ifndef D_PROGRESSIVE_SUPPORTED
#undef BLOCK_SMOOTHING_SUPPORTED
#endif
/* Private buffer controller object */
typedef struct {
struct jpeg_d_coef_controller pub; /* public fields */
JDIMENSION iMCU_row_num; /* iMCU row # within image */
JDIMENSION mcu_ctr; /* counts MCUs processed in current row */
/* These variables keep track of the current location of the input side. */
/* cinfo->input_iMCU_row is also used for this. */
JDIMENSION MCU_ctr; /* counts MCUs processed in current row */
int MCU_vert_offset; /* counts MCU rows within iMCU row */
int MCU_rows_per_iMCU_row; /* number of such rows needed */
/* In single-pass modes without block smoothing, it's sufficient to buffer
* just one MCU (although this may prove a bit slow in practice).
* We allocate a workspace of MAX_BLOCKS_IN_MCU coefficient blocks,
/* The output side's location is represented by cinfo->output_iMCU_row. */
/* In single-pass modes, it's sufficient to buffer just one MCU.
* We allocate a workspace of D_MAX_BLOCKS_IN_MCU coefficient blocks,
* and let the entropy decoder write into that workspace each time.
* (On 80x86, the workspace is FAR even though it's not really very big;
* this is to keep the module interfaces unchanged when a large coefficient
* buffer is necessary.)
* In multi-pass modes, this array points to the current MCU's blocks
* within the virtual arrays.
* within the virtual arrays; it is used only by the input side.
*/
JBLOCKROW MCU_buffer[MAX_BLOCKS_IN_MCU];
JBLOCKROW MCU_buffer[D_MAX_BLOCKS_IN_MCU];
#ifdef D_MULTISCAN_FILES_SUPPORTED
/* In multi-pass modes, we need a virtual block array for each component. */
jvirt_barray_ptr whole_image[MAX_COMPONENTS];
#endif
#ifdef BLOCK_SMOOTHING_SUPPORTED
/* When doing block smoothing, we latch coefficient Al values here */
int * coef_bits_latch;
#define SAVED_COEFS 6 /* we save coef_bits[0..5] */
#endif
} my_coef_controller;
typedef my_coef_controller * my_coef_ptr;
/* Forward declarations */
METHODDEF boolean decompress_data
METHODDEF int decompress_onepass
JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf));
#ifdef D_MULTISCAN_FILES_SUPPORTED
METHODDEF boolean decompress_read
METHODDEF int decompress_data
JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf));
METHODDEF boolean decompress_output
#endif
#ifdef BLOCK_SMOOTHING_SUPPORTED
LOCAL boolean smoothing_ok JPP((j_decompress_ptr cinfo));
METHODDEF int decompress_smooth_data
JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf));
#endif
LOCAL void
start_iMCU_row (j_decompress_ptr cinfo)
/* Reset within-iMCU-row counters for a new row */
/* Reset within-iMCU-row counters for a new row (input side) */
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
@ -68,65 +88,63 @@ start_iMCU_row (j_decompress_ptr cinfo)
if (cinfo->comps_in_scan > 1) {
coef->MCU_rows_per_iMCU_row = 1;
} else {
if (coef->iMCU_row_num < (cinfo->total_iMCU_rows-1))
if (cinfo->input_iMCU_row < (cinfo->total_iMCU_rows-1))
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;
else
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height;
}
coef->mcu_ctr = 0;
coef->MCU_ctr = 0;
coef->MCU_vert_offset = 0;
}
/*
* Initialize for a processing pass.
* Initialize for an input processing pass.
*/
METHODDEF void
start_pass_coef (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)
start_input_pass (j_decompress_ptr cinfo)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
coef->iMCU_row_num = 0;
cinfo->input_iMCU_row = 0;
start_iMCU_row(cinfo);
switch (pass_mode) {
case JBUF_PASS_THRU:
if (coef->whole_image[0] != NULL)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
coef->pub.decompress_data = decompress_data;
break;
#ifdef D_MULTISCAN_FILES_SUPPORTED
case JBUF_SAVE_SOURCE:
if (coef->whole_image[0] == NULL)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
coef->pub.decompress_data = decompress_read;
break;
case JBUF_CRANK_DEST:
if (coef->whole_image[0] == NULL)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
coef->pub.decompress_data = decompress_output;
break;
#endif
default:
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
break;
}
}
/*
* Process some data in the single-pass case.
* Initialize for an output processing pass.
*/
METHODDEF void
start_output_pass (j_decompress_ptr cinfo)
{
#ifdef BLOCK_SMOOTHING_SUPPORTED
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
/* If multipass, check to see whether to use block smoothing on this pass */
if (coef->pub.coef_arrays != NULL) {
if (cinfo->do_block_smoothing && smoothing_ok(cinfo))
coef->pub.decompress_data = decompress_smooth_data;
else
coef->pub.decompress_data = decompress_data;
}
#endif
cinfo->output_iMCU_row = 0;
}
/*
* Decompress and return some data in the single-pass case.
* Always attempts to emit one fully interleaved MCU row ("iMCU" row).
* Returns TRUE if it completed a row, FALSE if not (suspension).
* Input and output must run in lockstep since we have only a one-MCU buffer.
* Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED.
*
* NB: output_buf contains a plane for each component in image.
* For single pass, this is the same as the components in the scan.
*/
METHODDEF boolean
decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
METHODDEF int
decompress_onepass (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
JDIMENSION MCU_col_num; /* index of current MCU within row */
@ -141,7 +159,7 @@ decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
/* Loop to process as much as one whole iMCU row */
for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;
yoffset++) {
for (MCU_col_num = coef->mcu_ctr; MCU_col_num <= last_MCU_col;
for (MCU_col_num = coef->MCU_ctr; MCU_col_num <= last_MCU_col;
MCU_col_num++) {
/* Try to fetch an MCU. Entropy decoder expects buffer to be zeroed. */
jzero_far((void FAR *) coef->MCU_buffer[0],
@ -149,8 +167,8 @@ decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
if (! (*cinfo->entropy->decode_mcu) (cinfo, coef->MCU_buffer)) {
/* Suspension forced; update state counters and exit */
coef->MCU_vert_offset = yoffset;
coef->mcu_ctr = MCU_col_num;
return FALSE;
coef->MCU_ctr = MCU_col_num;
return JPEG_SUSPENDED;
}
/* Determine where data should go in output_buf and do the IDCT thing.
* We skip dummy blocks at the right and bottom edges (but blkn gets
@ -171,7 +189,7 @@ decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
output_ptr = output_buf[ci] + yoffset * compptr->DCT_scaled_size;
start_col = MCU_col_num * compptr->MCU_sample_width;
for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
if (coef->iMCU_row_num < last_iMCU_row ||
if (cinfo->input_iMCU_row < last_iMCU_row ||
yoffset+yindex < compptr->last_row_height) {
output_col = start_col;
for (xindex = 0; xindex < useful_width; xindex++) {
@ -187,32 +205,47 @@ decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
}
}
/* Completed an MCU row, but perhaps not an iMCU row */
coef->mcu_ctr = 0;
coef->MCU_ctr = 0;
}
/* Completed the iMCU row, advance counters for next one */
coef->iMCU_row_num++;
start_iMCU_row(cinfo);
return TRUE;
cinfo->output_iMCU_row++;
if (++(cinfo->input_iMCU_row) < cinfo->total_iMCU_rows) {
start_iMCU_row(cinfo);
return JPEG_ROW_COMPLETED;
}
/* Completed the scan */
(*cinfo->inputctl->finish_input_pass) (cinfo);
return JPEG_SCAN_COMPLETED;
}
/*
* Dummy consume-input routine for single-pass operation.
*/
METHODDEF int
dummy_consume_data (j_decompress_ptr cinfo)
{
return JPEG_SUSPENDED; /* Always indicate nothing was done */
}
#ifdef D_MULTISCAN_FILES_SUPPORTED
/*
* Process some data: handle an input pass for a multiple-scan file.
* We read the equivalent of one fully interleaved MCU row ("iMCU" row)
* per call, ie, v_samp_factor block rows for each component in the scan.
* No data is returned; we just stash it in the virtual arrays.
* Returns TRUE if it completed a row, FALSE if not (suspension).
* Consume input data and store it in the full-image coefficient buffer.
* We read as much as one fully interleaved MCU row ("iMCU" row) per call,
* ie, v_samp_factor block rows for each component in the scan.
* Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED.
*/
METHODDEF boolean
decompress_read (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
METHODDEF int
consume_data (j_decompress_ptr cinfo)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
JDIMENSION MCU_col_num; /* index of current MCU within row */
int blkn, ci, xindex, yindex, yoffset;
JDIMENSION total_width, start_col;
JDIMENSION start_col;
JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN];
JBLOCKROW buffer_ptr;
jpeg_component_info *compptr;
@ -222,20 +255,18 @@ decompress_read (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
compptr = cinfo->cur_comp_info[ci];
buffer[ci] = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],
coef->iMCU_row_num * compptr->v_samp_factor, TRUE);
/* Entropy decoder expects buffer to be zeroed. */
total_width = (JDIMENSION) jround_up((long) compptr->width_in_blocks,
(long) compptr->h_samp_factor);
for (yindex = 0; yindex < compptr->v_samp_factor; yindex++) {
jzero_far((void FAR *) buffer[ci][yindex],
(size_t) (total_width * SIZEOF(JBLOCK)));
}
cinfo->input_iMCU_row * compptr->v_samp_factor,
(JDIMENSION) compptr->v_samp_factor, TRUE);
/* Note: entropy decoder expects buffer to be zeroed,
* but this is handled automatically by the memory manager
* because we requested a pre-zeroed array.
*/
}
/* Loop to process one whole iMCU row */
for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;
yoffset++) {
for (MCU_col_num = coef->mcu_ctr; MCU_col_num < cinfo->MCUs_per_row;
for (MCU_col_num = coef->MCU_ctr; MCU_col_num < cinfo->MCUs_per_row;
MCU_col_num++) {
/* Construct list of pointers to DCT blocks belonging to this MCU */
blkn = 0; /* index of current DCT block within MCU */
@ -253,30 +284,34 @@ decompress_read (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
if (! (*cinfo->entropy->decode_mcu) (cinfo, coef->MCU_buffer)) {
/* Suspension forced; update state counters and exit */
coef->MCU_vert_offset = yoffset;
coef->mcu_ctr = MCU_col_num;
return FALSE;
coef->MCU_ctr = MCU_col_num;
return JPEG_SUSPENDED;
}
}
/* Completed an MCU row, but perhaps not an iMCU row */
coef->mcu_ctr = 0;
coef->MCU_ctr = 0;
}
/* Completed the iMCU row, advance counters for next one */
coef->iMCU_row_num++;
start_iMCU_row(cinfo);
return TRUE;
if (++(cinfo->input_iMCU_row) < cinfo->total_iMCU_rows) {
start_iMCU_row(cinfo);
return JPEG_ROW_COMPLETED;
}
/* Completed the scan */
(*cinfo->inputctl->finish_input_pass) (cinfo);
return JPEG_SCAN_COMPLETED;
}
/*
* Process some data: output from the virtual arrays after reading is done.
* Always emits one fully interleaved MCU row ("iMCU" row).
* Always returns TRUE --- suspension is not possible.
* Decompress and return some data in the multi-pass case.
* Always attempts to emit one fully interleaved MCU row ("iMCU" row).
* Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED.
*
* NB: output_buf contains a plane for each component in image.
*/
METHODDEF boolean
decompress_output (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
METHODDEF int
decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
@ -289,6 +324,15 @@ decompress_output (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
jpeg_component_info *compptr;
inverse_DCT_method_ptr inverse_DCT;
/* Force some input to be done if we are getting ahead of the input. */
while (cinfo->input_scan_number < cinfo->output_scan_number ||
(cinfo->input_scan_number == cinfo->output_scan_number &&
cinfo->input_iMCU_row <= cinfo->output_iMCU_row)) {
if ((*cinfo->inputctl->consume_input)(cinfo) == JPEG_SUSPENDED)
return JPEG_SUSPENDED;
}
/* OK, output from the virtual arrays. */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Don't bother to IDCT an uninteresting component. */
@ -297,12 +341,13 @@ decompress_output (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
/* Align the virtual buffer for this component. */
buffer = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[ci],
coef->iMCU_row_num * compptr->v_samp_factor, FALSE);
cinfo->output_iMCU_row * compptr->v_samp_factor,
(JDIMENSION) compptr->v_samp_factor, FALSE);
/* Count non-dummy DCT block rows in this iMCU row. */
if (coef->iMCU_row_num < last_iMCU_row)
if (cinfo->output_iMCU_row < last_iMCU_row)
block_rows = compptr->v_samp_factor;
else {
/* NB: can't use last_row_height here, since may not be set! */
/* NB: can't use last_row_height here; it is input-side-dependent! */
block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
if (block_rows == 0) block_rows = compptr->v_samp_factor;
}
@ -322,13 +367,296 @@ decompress_output (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
}
}
coef->iMCU_row_num++;
return TRUE;
if (++(cinfo->output_iMCU_row) < cinfo->total_iMCU_rows)
return JPEG_ROW_COMPLETED;
return JPEG_SCAN_COMPLETED;
}
#endif /* D_MULTISCAN_FILES_SUPPORTED */
#ifdef BLOCK_SMOOTHING_SUPPORTED
/*
* This code applies interblock smoothing as described by section K.8
* of the JPEG standard: the first 5 AC coefficients are estimated from
* the DC values of a DCT block and its 8 neighboring blocks.
* We apply smoothing only for progressive JPEG decoding, and only if
* the coefficients it can estimate are not yet known to full precision.
*/
/*
* Determine whether block smoothing is applicable and safe.
* We also latch the current states of the coef_bits[] entries for the
* AC coefficients; otherwise, if the input side of the decompressor
* advances into a new scan, we might think the coefficients are known
* more accurately than they really are.
*/
LOCAL boolean
smoothing_ok (j_decompress_ptr cinfo)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
boolean smoothing_useful = FALSE;
int ci, coefi;
jpeg_component_info *compptr;
JQUANT_TBL * qtable;
int * coef_bits;
int * coef_bits_latch;
if (! cinfo->progressive_mode || cinfo->coef_bits == NULL)
return FALSE;
/* Allocate latch area if not already done */
if (coef->coef_bits_latch == NULL)
coef->coef_bits_latch = (int *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
cinfo->num_components *
(SAVED_COEFS * SIZEOF(int)));
coef_bits_latch = coef->coef_bits_latch;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* All components' quantization values must already be latched. */
if ((qtable = compptr->quant_table) == NULL)
return FALSE;
/* Verify DC & first 5 AC quantizers are nonzero to avoid zero-divide. */
for (coefi = 0; coefi <= 5; coefi++) {
if (qtable->quantval[coefi] == 0)
return FALSE;
}
/* DC values must be at least partly known for all components. */
coef_bits = cinfo->coef_bits[ci];
if (coef_bits[0] < 0)
return FALSE;
/* Block smoothing is helpful if some AC coefficients remain inaccurate. */
for (coefi = 1; coefi <= 5; coefi++) {
coef_bits_latch[coefi] = coef_bits[coefi];
if (coef_bits[coefi] != 0)
smoothing_useful = TRUE;
}
coef_bits_latch += SAVED_COEFS;
}
return smoothing_useful;
}
/*
* Variant of decompress_data for use when doing block smoothing.
*/
METHODDEF int
decompress_smooth_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
JDIMENSION block_num, last_block_column;
int ci, block_row, block_rows, access_rows;
JBLOCKARRAY buffer;
JBLOCKROW buffer_ptr, prev_block_row, next_block_row;
JSAMPARRAY output_ptr;
JDIMENSION output_col;
jpeg_component_info *compptr;
inverse_DCT_method_ptr inverse_DCT;
boolean first_row, last_row;
JBLOCK workspace;
int *coef_bits;
JQUANT_TBL *quanttbl;
INT32 Q00,Q01,Q02,Q10,Q11,Q20, num;
int DC1,DC2,DC3,DC4,DC5,DC6,DC7,DC8,DC9;
int Al, pred;
/* Force some input to be done if we are getting ahead of the input. */
while (cinfo->input_scan_number <= cinfo->output_scan_number &&
! cinfo->inputctl->eoi_reached) {
if (cinfo->input_scan_number == cinfo->output_scan_number) {
/* If input is working on current scan, we ordinarily want it to
* have completed the current row. But if input scan is DC,
* we want it to keep one row ahead so that next block row's DC
* values are up to date.
*/
JDIMENSION delta = (cinfo->Ss == 0) ? 1 : 0;
if (cinfo->input_iMCU_row > cinfo->output_iMCU_row+delta)
break;
}
if ((*cinfo->inputctl->consume_input)(cinfo) == JPEG_SUSPENDED)
return JPEG_SUSPENDED;
}
/* OK, output from the virtual arrays. */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Don't bother to IDCT an uninteresting component. */
if (! compptr->component_needed)
continue;
/* Count non-dummy DCT block rows in this iMCU row. */
if (cinfo->output_iMCU_row < last_iMCU_row) {
block_rows = compptr->v_samp_factor;
access_rows = block_rows * 2; /* this and next iMCU row */
last_row = FALSE;
} else {
/* NB: can't use last_row_height here; it is input-side-dependent! */
block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
if (block_rows == 0) block_rows = compptr->v_samp_factor;
access_rows = block_rows; /* this iMCU row only */
last_row = TRUE;
}
/* Align the virtual buffer for this component. */
if (cinfo->output_iMCU_row > 0) {
access_rows += compptr->v_samp_factor; /* prior iMCU row too */
buffer = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[ci],
(cinfo->output_iMCU_row - 1) * compptr->v_samp_factor,
(JDIMENSION) access_rows, FALSE);
buffer += compptr->v_samp_factor; /* point to current iMCU row */
first_row = FALSE;
} else {
buffer = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[ci],
(JDIMENSION) 0, (JDIMENSION) access_rows, FALSE);
first_row = TRUE;
}
/* Fetch component-dependent info */
coef_bits = coef->coef_bits_latch + (ci * SAVED_COEFS);
quanttbl = compptr->quant_table;
Q00 = quanttbl->quantval[0];
Q01 = quanttbl->quantval[1];
Q10 = quanttbl->quantval[2];
Q20 = quanttbl->quantval[3];
Q11 = quanttbl->quantval[4];
Q02 = quanttbl->quantval[5];
inverse_DCT = cinfo->idct->inverse_DCT[ci];
output_ptr = output_buf[ci];
/* Loop over all DCT blocks to be processed. */
for (block_row = 0; block_row < block_rows; block_row++) {
buffer_ptr = buffer[block_row];
if (first_row && block_row == 0)
prev_block_row = buffer_ptr;
else
prev_block_row = buffer[block_row-1];
if (last_row && block_row == block_rows-1)
next_block_row = buffer_ptr;
else
next_block_row = buffer[block_row+1];
/* We fetch the surrounding DC values using a sliding-register approach.
* Initialize all nine here so as to do the right thing on narrow pics.
*/
DC1 = DC2 = DC3 = (int) prev_block_row[0][0];
DC4 = DC5 = DC6 = (int) buffer_ptr[0][0];
DC7 = DC8 = DC9 = (int) next_block_row[0][0];
output_col = 0;
last_block_column = compptr->width_in_blocks - 1;
for (block_num = 0; block_num <= last_block_column; block_num++) {
/* Fetch current DCT block into workspace so we can modify it. */
jcopy_block_row(buffer_ptr, (JBLOCKROW) workspace, (JDIMENSION) 1);
/* Update DC values */
if (block_num < last_block_column) {
DC3 = (int) prev_block_row[1][0];
DC6 = (int) buffer_ptr[1][0];
DC9 = (int) next_block_row[1][0];
}
/* Compute coefficient estimates per K.8.
* An estimate is applied only if coefficient is still zero,
* and is not known to be fully accurate.
*/
/* AC01 */
if ((Al=coef_bits[1]) != 0 && workspace[1] == 0) {
num = 36 * Q00 * (DC4 - DC6);
if (num >= 0) {
pred = (int) (((Q01<<7) + num) / (Q01<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
} else {
pred = (int) (((Q01<<7) - num) / (Q01<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
pred = -pred;
}
workspace[1] = (JCOEF) pred;
}
/* AC10 */
if ((Al=coef_bits[2]) != 0 && workspace[8] == 0) {
num = 36 * Q00 * (DC2 - DC8);
if (num >= 0) {
pred = (int) (((Q10<<7) + num) / (Q10<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
} else {
pred = (int) (((Q10<<7) - num) / (Q10<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
pred = -pred;
}
workspace[8] = (JCOEF) pred;
}
/* AC20 */
if ((Al=coef_bits[3]) != 0 && workspace[16] == 0) {
num = 9 * Q00 * (DC2 + DC8 - 2*DC5);
if (num >= 0) {
pred = (int) (((Q20<<7) + num) / (Q20<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
} else {
pred = (int) (((Q20<<7) - num) / (Q20<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
pred = -pred;
}
workspace[16] = (JCOEF) pred;
}
/* AC11 */
if ((Al=coef_bits[4]) != 0 && workspace[9] == 0) {
num = 5 * Q00 * (DC1 - DC3 - DC7 + DC9);
if (num >= 0) {
pred = (int) (((Q11<<7) + num) / (Q11<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
} else {
pred = (int) (((Q11<<7) - num) / (Q11<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
pred = -pred;
}
workspace[9] = (JCOEF) pred;
}
/* AC02 */
if ((Al=coef_bits[5]) != 0 && workspace[2] == 0) {
num = 9 * Q00 * (DC4 + DC6 - 2*DC5);
if (num >= 0) {
pred = (int) (((Q02<<7) + num) / (Q02<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
} else {
pred = (int) (((Q02<<7) - num) / (Q02<<8));
if (Al > 0 && pred >= (1<<Al))
pred = (1<<Al)-1;
pred = -pred;
}
workspace[2] = (JCOEF) pred;
}
/* OK, do the IDCT */
(*inverse_DCT) (cinfo, compptr, (JCOEFPTR) workspace,
output_ptr, output_col);
/* Advance for next column */
DC1 = DC2; DC2 = DC3;
DC4 = DC5; DC5 = DC6;
DC7 = DC8; DC8 = DC9;
buffer_ptr++, prev_block_row++, next_block_row++;
output_col += compptr->DCT_scaled_size;
}
output_ptr += compptr->DCT_scaled_size;
}
}
if (++(cinfo->output_iMCU_row) < cinfo->total_iMCU_rows)
return JPEG_ROW_COMPLETED;
return JPEG_SCAN_COMPLETED;
}
#endif /* BLOCK_SMOOTHING_SUPPORTED */
/*
* Initialize coefficient buffer controller.
*/
@ -337,42 +665,61 @@ GLOBAL void
jinit_d_coef_controller (j_decompress_ptr cinfo, boolean need_full_buffer)
{
my_coef_ptr coef;
int ci, i;
jpeg_component_info *compptr;
JBLOCKROW buffer;
coef = (my_coef_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_coef_controller));
cinfo->coef = (struct jpeg_d_coef_controller *) coef;
coef->pub.start_pass = start_pass_coef;
coef->pub.start_input_pass = start_input_pass;
coef->pub.start_output_pass = start_output_pass;
#ifdef BLOCK_SMOOTHING_SUPPORTED
coef->coef_bits_latch = NULL;
#endif
/* Create the coefficient buffer. */
if (need_full_buffer) {
#ifdef D_MULTISCAN_FILES_SUPPORTED
/* Allocate a full-image virtual array for each component, */
/* padded to a multiple of samp_factor DCT blocks in each direction. */
/* Note memmgr implicitly pads the vertical direction. */
/* Note we ask for a pre-zeroed array. */
int ci, access_rows;
jpeg_component_info *compptr;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
access_rows = compptr->v_samp_factor;
#ifdef BLOCK_SMOOTHING_SUPPORTED
/* If block smoothing could be used, need a bigger window */
if (cinfo->progressive_mode)
access_rows *= 3;
#endif
coef->whole_image[ci] = (*cinfo->mem->request_virt_barray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, TRUE,
(JDIMENSION) jround_up((long) compptr->width_in_blocks,
(long) compptr->h_samp_factor),
compptr->height_in_blocks,
(JDIMENSION) compptr->v_samp_factor);
(JDIMENSION) jround_up((long) compptr->height_in_blocks,
(long) compptr->v_samp_factor),
(JDIMENSION) access_rows);
}
coef->pub.consume_data = consume_data;
coef->pub.decompress_data = decompress_data;
coef->pub.coef_arrays = coef->whole_image; /* link to virtual arrays */
#else
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else {
/* We only need a single-MCU buffer. */
JBLOCKROW buffer;
int i;
buffer = (JBLOCKROW)
(*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE,
MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
for (i = 0; i < MAX_BLOCKS_IN_MCU; i++) {
D_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
for (i = 0; i < D_MAX_BLOCKS_IN_MCU; i++) {
coef->MCU_buffer[i] = buffer + i;
}
coef->whole_image[0] = NULL; /* flag for no virtual arrays */
coef->pub.consume_data = dummy_consume_data;
coef->pub.decompress_data = decompress_onepass;
coef->pub.coef_arrays = NULL; /* flag for no virtual arrays */
}
}

24
jdcolor.c
View File

@ -1,7 +1,7 @@
/*
* jdcolor.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -63,14 +63,15 @@ typedef my_color_deconverter * my_cconvert_ptr;
/*
* Initialize for YCC->RGB colorspace conversion.
* Initialize tables for YCC->RGB colorspace conversion.
*/
METHODDEF void
ycc_rgb_start (j_decompress_ptr cinfo)
LOCAL void
build_ycc_rgb_table (j_decompress_ptr cinfo)
{
my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
INT32 i, x;
int i;
INT32 x;
SHIFT_TEMPS
cconvert->Cr_r_tab = (int *)
@ -171,7 +172,7 @@ null_convert (j_decompress_ptr cinfo,
{
register JSAMPROW inptr, outptr;
register JDIMENSION count;
register int num_components = cinfo->output_components;
register int num_components = cinfo->num_components;
JDIMENSION num_cols = cinfo->output_width;
int ci;
@ -210,7 +211,7 @@ grayscale_convert (j_decompress_ptr cinfo,
* Adobe-style YCCK->CMYK conversion.
* We convert YCbCr to R=1-C, G=1-M, and B=1-Y using the same
* conversion as above, while passing K (black) unchanged.
* We assume ycc_rgb_start has been called.
* We assume build_ycc_rgb_table has been called.
*/
METHODDEF void
@ -262,7 +263,7 @@ ycck_cmyk_convert (j_decompress_ptr cinfo,
*/
METHODDEF void
null_method (j_decompress_ptr cinfo)
start_pass_dcolor (j_decompress_ptr cinfo)
{
/* no work needed */
}
@ -282,8 +283,7 @@ jinit_color_deconverter (j_decompress_ptr cinfo)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_color_deconverter));
cinfo->cconvert = (struct jpeg_color_deconverter *) cconvert;
/* set start_pass to null method until we find out differently */
cconvert->pub.start_pass = null_method;
cconvert->pub.start_pass = start_pass_dcolor;
/* Make sure num_components agrees with jpeg_color_space */
switch (cinfo->jpeg_color_space) {
@ -331,8 +331,8 @@ jinit_color_deconverter (j_decompress_ptr cinfo)
case JCS_RGB:
cinfo->out_color_components = RGB_PIXELSIZE;
if (cinfo->jpeg_color_space == JCS_YCbCr) {
cconvert->pub.start_pass = ycc_rgb_start;
cconvert->pub.color_convert = ycc_rgb_convert;
build_ycc_rgb_table(cinfo);
} else if (cinfo->jpeg_color_space == JCS_RGB && RGB_PIXELSIZE == 3) {
cconvert->pub.color_convert = null_convert;
} else
@ -342,8 +342,8 @@ jinit_color_deconverter (j_decompress_ptr cinfo)
case JCS_CMYK:
cinfo->out_color_components = 4;
if (cinfo->jpeg_color_space == JCS_YCCK) {
cconvert->pub.start_pass = ycc_rgb_start;
cconvert->pub.color_convert = ycck_cmyk_convert;
build_ycc_rgb_table(cinfo);
} else if (cinfo->jpeg_color_space == JCS_CMYK) {
cconvert->pub.color_convert = null_convert;
} else

248
jddctmgr.c
View File

@ -1,14 +1,14 @@
/*
* jddctmgr.c
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains the inverse-DCT management logic.
* This code selects a particular IDCT implementation to be used,
* and it performs related housekeeping chores. No code in this file
* is executed per IDCT step, only during pass setup.
* is executed per IDCT step, only during output pass setup.
*
* Note that the IDCT routines are responsible for performing coefficient
* dequantization as well as the IDCT proper. This module sets up the
@ -21,30 +21,50 @@
#include "jdct.h" /* Private declarations for DCT subsystem */
/*
* The decompressor input side (jdinput.c) saves away the appropriate
* quantization table for each component at the start of the first scan
* involving that component. (This is necessary in order to correctly
* decode files that reuse Q-table slots.)
* When we are ready to make an output pass, the saved Q-table is converted
* to a multiplier table that will actually be used by the IDCT routine.
* The multiplier table contents are IDCT-method-dependent. To support
* application changes in IDCT method between scans, we can remake the
* multiplier tables if necessary.
* In buffered-image mode, the first output pass may occur before any data
* has been seen for some components, and thus before their Q-tables have
* been saved away. To handle this case, multiplier tables are preset
* to zeroes; the result of the IDCT will be a neutral gray level.
*/
/* Private subobject for this module */
typedef struct {
struct jpeg_inverse_dct pub; /* public fields */
/* Record the IDCT method type actually selected for each component */
J_DCT_METHOD real_method[MAX_COMPONENTS];
/* This array contains the IDCT method code that each multiplier table
* is currently set up for, or -1 if it's not yet set up.
* The actual multiplier tables are pointed to by dct_table in the
* per-component comp_info structures.
*/
int cur_method[MAX_COMPONENTS];
} my_idct_controller;
typedef my_idct_controller * my_idct_ptr;
/* ZIG[i] is the zigzag-order position of the i'th element of a DCT block */
/* read in natural order (left to right, top to bottom). */
static const int ZIG[DCTSIZE2] = {
0, 1, 5, 6, 14, 15, 27, 28,
2, 4, 7, 13, 16, 26, 29, 42,
3, 8, 12, 17, 25, 30, 41, 43,
9, 11, 18, 24, 31, 40, 44, 53,
10, 19, 23, 32, 39, 45, 52, 54,
20, 22, 33, 38, 46, 51, 55, 60,
21, 34, 37, 47, 50, 56, 59, 61,
35, 36, 48, 49, 57, 58, 62, 63
};
/* Allocated multiplier tables: big enough for any supported variant */
typedef union {
ISLOW_MULT_TYPE islow_array[DCTSIZE2];
#ifdef DCT_IFAST_SUPPORTED
IFAST_MULT_TYPE ifast_array[DCTSIZE2];
#endif
#ifdef DCT_FLOAT_SUPPORTED
FLOAT_MULT_TYPE float_array[DCTSIZE2];
#endif
} multiplier_table;
/* The current scaled-IDCT routines require ISLOW-style multiplier tables,
@ -60,51 +80,92 @@ static const int ZIG[DCTSIZE2] = {
/*
* Initialize for an input scan.
*
* Verify that all referenced Q-tables are present, and set up
* the multiplier table for each one.
* With a multiple-scan JPEG file, this is called during each input scan,
* NOT during the final output pass where the IDCT is actually done.
* The purpose is to save away the current Q-table contents just in case
* the encoder changes tables between scans. This decoder will dequantize
* any component using the Q-table which was current at the start of the
* first scan using that component.
* Prepare for an output pass.
* Here we select the proper IDCT routine for each component and build
* a matching multiplier table.
*/
METHODDEF void
start_input_pass (j_decompress_ptr cinfo)
start_pass (j_decompress_ptr cinfo)
{
my_idct_ptr idct = (my_idct_ptr) cinfo->idct;
int ci, qtblno, i;
int ci, i;
jpeg_component_info *compptr;
int method = 0;
inverse_DCT_method_ptr method_ptr = NULL;
JQUANT_TBL * qtbl;
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
qtblno = compptr->quant_tbl_no;
/* Make sure specified quantization table is present */
if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS ||
cinfo->quant_tbl_ptrs[qtblno] == NULL)
ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno);
qtbl = cinfo->quant_tbl_ptrs[qtblno];
/* Create multiplier table from quant table, unless we already did so. */
if (compptr->dct_table != NULL)
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Select the proper IDCT routine for this component's scaling */
switch (compptr->DCT_scaled_size) {
#ifdef IDCT_SCALING_SUPPORTED
case 1:
method_ptr = jpeg_idct_1x1;
method = JDCT_ISLOW; /* jidctred uses islow-style table */
break;
case 2:
method_ptr = jpeg_idct_2x2;
method = JDCT_ISLOW; /* jidctred uses islow-style table */
break;
case 4:
method_ptr = jpeg_idct_4x4;
method = JDCT_ISLOW; /* jidctred uses islow-style table */
break;
#endif
case DCTSIZE:
switch (cinfo->dct_method) {
#ifdef DCT_ISLOW_SUPPORTED
case JDCT_ISLOW:
method_ptr = jpeg_idct_islow;
method = JDCT_ISLOW;
break;
#endif
#ifdef DCT_IFAST_SUPPORTED
case JDCT_IFAST:
method_ptr = jpeg_idct_ifast;
method = JDCT_IFAST;
break;
#endif
#ifdef DCT_FLOAT_SUPPORTED
case JDCT_FLOAT:
method_ptr = jpeg_idct_float;
method = JDCT_FLOAT;
break;
#endif
default:
ERREXIT(cinfo, JERR_NOT_COMPILED);
break;
}
break;
default:
ERREXIT1(cinfo, JERR_BAD_DCTSIZE, compptr->DCT_scaled_size);
break;
}
idct->pub.inverse_DCT[ci] = method_ptr;
/* Create multiplier table from quant table.
* However, we can skip this if the component is uninteresting
* or if we already built the table. Also, if no quant table
* has yet been saved for the component, we leave the
* multiplier table all-zero; we'll be reading zeroes from the
* coefficient controller's buffer anyway.
*/
if (! compptr->component_needed || idct->cur_method[ci] == method)
continue;
switch (idct->real_method[compptr->component_index]) {
qtbl = compptr->quant_table;
if (qtbl == NULL) /* happens if no data yet for component */
continue;
idct->cur_method[ci] = method;
switch (method) {
#ifdef PROVIDE_ISLOW_TABLES
case JDCT_ISLOW:
{
/* For LL&M IDCT method, multipliers are equal to raw quantization
* coefficients, but are stored in natural order as ints.
*/
ISLOW_MULT_TYPE * ismtbl;
compptr->dct_table =
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
DCTSIZE2 * SIZEOF(ISLOW_MULT_TYPE));
ismtbl = (ISLOW_MULT_TYPE *) compptr->dct_table;
ISLOW_MULT_TYPE * ismtbl = (ISLOW_MULT_TYPE *) compptr->dct_table;
for (i = 0; i < DCTSIZE2; i++) {
ismtbl[i] = (ISLOW_MULT_TYPE) qtbl->quantval[ZIG[i]];
ismtbl[i] = (ISLOW_MULT_TYPE) qtbl->quantval[jpeg_zigzag_order[i]];
}
}
break;
@ -119,7 +180,7 @@ start_input_pass (j_decompress_ptr cinfo)
* For integer operation, the multiplier table is to be scaled by
* IFAST_SCALE_BITS. The multipliers are stored in natural order.
*/
IFAST_MULT_TYPE * ifmtbl;
IFAST_MULT_TYPE * ifmtbl = (IFAST_MULT_TYPE *) compptr->dct_table;
#define CONST_BITS 14
static const INT16 aanscales[DCTSIZE2] = {
/* precomputed values scaled up by 14 bits */
@ -134,13 +195,9 @@ start_input_pass (j_decompress_ptr cinfo)
};
SHIFT_TEMPS
compptr->dct_table =
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
DCTSIZE2 * SIZEOF(IFAST_MULT_TYPE));
ifmtbl = (IFAST_MULT_TYPE *) compptr->dct_table;
for (i = 0; i < DCTSIZE2; i++) {
ifmtbl[i] = (IFAST_MULT_TYPE)
DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[ZIG[i]],
DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[jpeg_zigzag_order[i]],
(INT32) aanscales[i]),
CONST_BITS-IFAST_SCALE_BITS);
}
@ -156,22 +213,18 @@ start_input_pass (j_decompress_ptr cinfo)
* scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7
* The multipliers are stored in natural order.
*/
FLOAT_MULT_TYPE * fmtbl;
FLOAT_MULT_TYPE * fmtbl = (FLOAT_MULT_TYPE *) compptr->dct_table;
int row, col;
static const double aanscalefactor[DCTSIZE] = {
1.0, 1.387039845, 1.306562965, 1.175875602,
1.0, 0.785694958, 0.541196100, 0.275899379
};
compptr->dct_table =
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
DCTSIZE2 * SIZEOF(FLOAT_MULT_TYPE));
fmtbl = (FLOAT_MULT_TYPE *) compptr->dct_table;
i = 0;
for (row = 0; row < DCTSIZE; row++) {
for (col = 0; col < DCTSIZE; col++) {
fmtbl[i] = (FLOAT_MULT_TYPE)
((double) qtbl->quantval[ZIG[i]] *
((double) qtbl->quantval[jpeg_zigzag_order[i]] *
aanscalefactor[row] * aanscalefactor[col]);
i++;
}
@ -187,32 +240,6 @@ start_input_pass (j_decompress_ptr cinfo)
}
/*
* Prepare for an output pass that will actually perform IDCTs.
*
* start_input_pass should already have been done for all components
* of interest; we need only verify that this is true.
* Note that uninteresting components are not required to have loaded tables.
* This allows the master controller to stop before reading the whole file
* if it has obtained the data for the interesting component(s).
*/
METHODDEF void
start_output_pass (j_decompress_ptr cinfo)
{
jpeg_component_info *compptr;
int ci;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
if (! compptr->component_needed)
continue;
if (compptr->dct_table == NULL)
ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, compptr->quant_tbl_no);
}
}
/*
* Initialize IDCT manager.
*/
@ -228,55 +255,16 @@ jinit_inverse_dct (j_decompress_ptr cinfo)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_idct_controller));
cinfo->idct = (struct jpeg_inverse_dct *) idct;
idct->pub.start_input_pass = start_input_pass;
idct->pub.start_output_pass = start_output_pass;
idct->pub.start_pass = start_pass;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
compptr->dct_table = NULL; /* initialize tables to "not prepared" */
switch (compptr->DCT_scaled_size) {
#ifdef IDCT_SCALING_SUPPORTED
case 1:
idct->pub.inverse_DCT[ci] = jpeg_idct_1x1;
idct->real_method[ci] = JDCT_ISLOW; /* jidctred uses islow-style table */
break;
case 2:
idct->pub.inverse_DCT[ci] = jpeg_idct_2x2;
idct->real_method[ci] = JDCT_ISLOW; /* jidctred uses islow-style table */
break;
case 4:
idct->pub.inverse_DCT[ci] = jpeg_idct_4x4;
idct->real_method[ci] = JDCT_ISLOW; /* jidctred uses islow-style table */
break;
#endif
case DCTSIZE:
switch (cinfo->dct_method) {
#ifdef DCT_ISLOW_SUPPORTED
case JDCT_ISLOW:
idct->pub.inverse_DCT[ci] = jpeg_idct_islow;
idct->real_method[ci] = JDCT_ISLOW;
break;
#endif
#ifdef DCT_IFAST_SUPPORTED
case JDCT_IFAST:
idct->pub.inverse_DCT[ci] = jpeg_idct_ifast;
idct->real_method[ci] = JDCT_IFAST;
break;
#endif
#ifdef DCT_FLOAT_SUPPORTED
case JDCT_FLOAT:
idct->pub.inverse_DCT[ci] = jpeg_idct_float;
idct->real_method[ci] = JDCT_FLOAT;
break;
#endif
default:
ERREXIT(cinfo, JERR_NOT_COMPILED);
break;
}
break;
default:
ERREXIT1(cinfo, JERR_BAD_DCTSIZE, compptr->DCT_scaled_size);
break;
}
/* Allocate and pre-zero a multiplier table for each component */
compptr->dct_table =
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(multiplier_table));
MEMZERO(compptr->dct_table, SIZEOF(multiplier_table));
/* Mark multiplier table not yet set up for any method */
idct->cur_method[ci] = -1;
}
}

334
jdhuff.c
View File

@ -1,7 +1,7 @@
/*
* jdhuff.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -10,47 +10,24 @@
* Much of the complexity here has to do with supporting input suspension.
* If the data source module demands suspension, we want to be able to back
* up to the start of the current MCU. To do this, we copy state variables
* into local working storage, and update them back to the permanent JPEG
* objects only upon successful completion of an MCU.
* into local working storage, and update them back to the permanent
* storage only upon successful completion of an MCU.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
#include "jdhuff.h" /* Declarations shared with jdphuff.c */
/* Derived data constructed for each Huffman table */
#define HUFF_LOOKAHEAD 8 /* # of bits of lookahead */
typedef struct {
/* Basic tables: (element [0] of each array is unused) */
INT32 mincode[17]; /* smallest code of length k */
INT32 maxcode[18]; /* largest code of length k (-1 if none) */
/* (maxcode[17] is a sentinel to ensure huff_DECODE terminates) */
int valptr[17]; /* huffval[] index of 1st symbol of length k */
/* Back link to public Huffman table (needed only in slow_DECODE) */
JHUFF_TBL *pub;
/* Lookahead tables: indexed by the next HUFF_LOOKAHEAD bits of
* the input data stream. If the next Huffman code is no more
* than HUFF_LOOKAHEAD bits long, we can obtain its length and
* the corresponding symbol directly from these tables.
*/
int look_nbits[1<<HUFF_LOOKAHEAD]; /* # bits, or 0 if too long */
UINT8 look_sym[1<<HUFF_LOOKAHEAD]; /* symbol, or unused */
} D_DERIVED_TBL;
/* Expanded entropy decoder object for Huffman decoding.
/*
* Expanded entropy decoder object for Huffman decoding.
*
* The savable_state subrecord contains fields that change within an MCU,
* but must not be updated permanently until we complete the MCU.
*/
typedef struct {
INT32 get_buffer; /* current bit-extraction buffer */
int bits_left; /* # of unused bits in it */
int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */
} savable_state;
@ -64,9 +41,7 @@ typedef struct {
#else
#if MAX_COMPS_IN_SCAN == 4
#define ASSIGN_STATE(dest,src) \
((dest).get_buffer = (src).get_buffer, \
(dest).bits_left = (src).bits_left, \
(dest).last_dc_val[0] = (src).last_dc_val[0], \
((dest).last_dc_val[0] = (src).last_dc_val[0], \
(dest).last_dc_val[1] = (src).last_dc_val[1], \
(dest).last_dc_val[2] = (src).last_dc_val[2], \
(dest).last_dc_val[3] = (src).last_dc_val[3])
@ -77,36 +52,22 @@ typedef struct {
typedef struct {
struct jpeg_entropy_decoder pub; /* public fields */
savable_state saved; /* Bit buffer & DC state at start of MCU */
/* These fields are loaded into local variables at start of each MCU.
* In case of suspension, we exit WITHOUT updating them.
*/
bitread_perm_state bitstate; /* Bit buffer at start of MCU */
savable_state saved; /* Other state at start of MCU */
/* These fields are NOT loaded into local working state. */
unsigned int restarts_to_go; /* MCUs left in this restart interval */
boolean printed_eod; /* flag to suppress extra end-of-data msgs */
/* Pointers to derived tables (these workspaces have image lifespan) */
D_DERIVED_TBL * dc_derived_tbls[NUM_HUFF_TBLS];
D_DERIVED_TBL * ac_derived_tbls[NUM_HUFF_TBLS];
d_derived_tbl * dc_derived_tbls[NUM_HUFF_TBLS];
d_derived_tbl * ac_derived_tbls[NUM_HUFF_TBLS];
} huff_entropy_decoder;
typedef huff_entropy_decoder * huff_entropy_ptr;
/* Working state while scanning an MCU.
* This struct contains all the fields that are needed by subroutines.
*/
typedef struct {
int unread_marker; /* nonzero if we have hit a marker */
const JOCTET * next_input_byte; /* => next byte to read from source */
size_t bytes_in_buffer; /* # of bytes remaining in source buffer */
savable_state cur; /* Current bit buffer & DC state */
j_decompress_ptr cinfo; /* fill_bit_buffer needs access to this */
} working_state;
/* Forward declarations */
LOCAL void fix_huff_tbl JPP((j_decompress_ptr cinfo, JHUFF_TBL * htbl,
D_DERIVED_TBL ** pdtbl));
/*
* Initialize for a Huffman-compressed scan.
@ -119,6 +80,14 @@ start_pass_huff_decoder (j_decompress_ptr cinfo)
int ci, dctbl, actbl;
jpeg_component_info * compptr;
/* Check that the scan parameters Ss, Se, Ah/Al are OK for sequential JPEG.
* This ought to be an error condition, but we make it a warning because
* there are some baseline files out there with all zeroes in these bytes.
*/
if (cinfo->Ss != 0 || cinfo->Se != DCTSIZE2-1 ||
cinfo->Ah != 0 || cinfo->Al != 0)
WARNMS(cinfo, JWRN_NOT_SEQUENTIAL);
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
dctbl = compptr->dc_tbl_no;
@ -132,29 +101,34 @@ start_pass_huff_decoder (j_decompress_ptr cinfo)
ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, actbl);
/* Compute derived values for Huffman tables */
/* We may do this more than once for a table, but it's not expensive */
fix_huff_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[dctbl],
& entropy->dc_derived_tbls[dctbl]);
fix_huff_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[actbl],
& entropy->ac_derived_tbls[actbl]);
jpeg_make_d_derived_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[dctbl],
& entropy->dc_derived_tbls[dctbl]);
jpeg_make_d_derived_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[actbl],
& entropy->ac_derived_tbls[actbl]);
/* Initialize DC predictions to 0 */
entropy->saved.last_dc_val[ci] = 0;
}
/* Initialize private state variables */
entropy->saved.bits_left = 0;
entropy->saved.get_buffer = 0; /* unnecessary, but keeps Purify quiet */
entropy->printed_eod = FALSE;
/* Initialize bitread state variables */
entropy->bitstate.bits_left = 0;
entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */
entropy->bitstate.printed_eod = FALSE;
/* Initialize restart counter */
entropy->restarts_to_go = cinfo->restart_interval;
}
LOCAL void
fix_huff_tbl (j_decompress_ptr cinfo, JHUFF_TBL * htbl, D_DERIVED_TBL ** pdtbl)
/* Compute the derived values for a Huffman table */
/*
* Compute the derived values for a Huffman table.
* Note this is also used by jdphuff.c.
*/
GLOBAL void
jpeg_make_d_derived_tbl (j_decompress_ptr cinfo, JHUFF_TBL * htbl,
d_derived_tbl ** pdtbl)
{
D_DERIVED_TBL *dtbl;
d_derived_tbl *dtbl;
int p, i, l, si;
int lookbits, ctr;
char huffsize[257];
@ -163,9 +137,9 @@ fix_huff_tbl (j_decompress_ptr cinfo, JHUFF_TBL * htbl, D_DERIVED_TBL ** pdtbl)
/* Allocate a workspace if we haven't already done so. */
if (*pdtbl == NULL)
*pdtbl = (D_DERIVED_TBL *)
*pdtbl = (d_derived_tbl *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(D_DERIVED_TBL));
SIZEOF(d_derived_tbl));
dtbl = *pdtbl;
dtbl->pub = htbl; /* fill in back link */
@ -207,7 +181,7 @@ fix_huff_tbl (j_decompress_ptr cinfo, JHUFF_TBL * htbl, D_DERIVED_TBL ** pdtbl)
dtbl->maxcode[l] = -1; /* -1 if no codes of this length */
}
}
dtbl->maxcode[17] = 0xFFFFFL; /* ensures huff_DECODE terminates */
dtbl->maxcode[17] = 0xFFFFFL; /* ensures jpeg_huff_decode terminates */
/* Compute lookahead tables to speed up decoding.
* First we set all the table entries to 0, indicating "too long";
@ -235,20 +209,10 @@ fix_huff_tbl (j_decompress_ptr cinfo, JHUFF_TBL * htbl, D_DERIVED_TBL ** pdtbl)
/*
* Code for extracting the next N bits from the input stream.
* (N never exceeds 15 for JPEG data.)
* This needs to go as fast as possible!
*
* We read source bytes into get_buffer and dole out bits as needed.
* If get_buffer already contains enough bits, they are fetched in-line
* by the macros check_bit_buffer and get_bits. When there aren't enough
* bits, fill_bit_buffer is called; it will attempt to fill get_buffer to
* the "high water mark" (not just to the number of bits needed; this reduces
* the function-call overhead cost of entering fill_bit_buffer).
* Note that fill_bit_buffer may return FALSE to indicate suspension.
* On TRUE return, fill_bit_buffer guarantees that get_buffer contains
* at least the requested number of bits --- dummy zeroes are inserted if
* necessary.
* Out-of-line code for bit fetching (shared with jdphuff.c).
* See jdhuff.h for info about usage.
* Note: current values of get_buffer and bits_left are passed as parameters,
* but are returned in the corresponding fields of the state struct.
*
* On most machines MIN_GET_BITS should be 25 to allow the full 32-bit width
* of get_buffer to be used. (On machines with wider words, an even larger
@ -256,25 +220,25 @@ fix_huff_tbl (j_decompress_ptr cinfo, JHUFF_TBL * htbl, D_DERIVED_TBL ** pdtbl)
* quite slow and take time proportional to the number of places shifted.
* (This is true with most PC compilers, for instance.) In this case it may
* be a win to set MIN_GET_BITS to the minimum value of 15. This reduces the
* average shift distance at the cost of more calls to fill_bit_buffer.
* average shift distance at the cost of more calls to jpeg_fill_bit_buffer.
*/
#ifdef SLOW_SHIFT_32
#define MIN_GET_BITS 15 /* minimum allowable value */
#else
#define MIN_GET_BITS 25 /* max value for 32-bit get_buffer */
#define MIN_GET_BITS (BIT_BUF_SIZE-7)
#endif
LOCAL boolean
fill_bit_buffer (working_state * state, int nbits)
GLOBAL boolean
jpeg_fill_bit_buffer (bitread_working_state * state,
register bit_buf_type get_buffer, register int bits_left,
int nbits)
/* Load up the bit buffer to a depth of at least nbits */
{
/* Copy heavily used state fields into locals (hopefully registers) */
register const JOCTET * next_input_byte = state->next_input_byte;
register size_t bytes_in_buffer = state->bytes_in_buffer;
register INT32 get_buffer = state->cur.get_buffer;
register int bits_left = state->cur.bits_left;
register int c;
/* Attempt to load at least MIN_GET_BITS bits into get_buffer. */
@ -322,14 +286,13 @@ fill_bit_buffer (working_state * state, int nbits)
break;
/* Uh-oh. Report corrupted data to user and stuff zeroes into
* the data stream, so that we can produce some kind of image.
* Note that this will be repeated for each byte demanded for the
* rest of the segment; this is slow but not unreasonably so.
* The main thing is to avoid getting a zillion warnings, hence
* we use a flag to ensure that only one warning appears.
* Note that this code will be repeated for each byte demanded
* for the rest of the segment. We use a nonvolatile flag to ensure
* that only one warning message appears.
*/
if (! ((huff_entropy_ptr) state->cinfo->entropy)->printed_eod) {
if (! *(state->printed_eod_ptr)) {
WARNMS(state->cinfo, JWRN_HIT_MARKER);
((huff_entropy_ptr) state->cinfo->entropy)->printed_eod = TRUE;
*(state->printed_eod_ptr) = TRUE;
}
c = 0; /* insert a zero byte into bit buffer */
}
@ -343,104 +306,46 @@ fill_bit_buffer (working_state * state, int nbits)
/* Unload the local registers */
state->next_input_byte = next_input_byte;
state->bytes_in_buffer = bytes_in_buffer;
state->cur.get_buffer = get_buffer;
state->cur.bits_left = bits_left;
state->get_buffer = get_buffer;
state->bits_left = bits_left;
return TRUE;
}
/*
* These macros provide the in-line portion of bit fetching.
* Use check_bit_buffer to ensure there are N bits in get_buffer
* before using get_bits, peek_bits, or drop_bits.
* check_bit_buffer(state,n,action);
* Ensure there are N bits in get_buffer; if suspend, take action.
* val = get_bits(state,n);
* Fetch next N bits.
* val = peek_bits(state,n);
* Fetch next N bits without removing them from the buffer.
* drop_bits(state,n);
* Discard next N bits.
* The value N should be a simple variable, not an expression, because it
* is evaluated multiple times.
* Out-of-line code for Huffman code decoding.
* See jdhuff.h for info about usage.
*/
#define check_bit_buffer(state,nbits,action) \
{ if ((state).cur.bits_left < (nbits)) \
if (! fill_bit_buffer(&(state), nbits)) \
{ action; } }
#define get_bits(state,nbits) \
(((int) ((state).cur.get_buffer >> ((state).cur.bits_left -= (nbits)))) & ((1<<(nbits))-1))
#define peek_bits(state,nbits) \
(((int) ((state).cur.get_buffer >> ((state).cur.bits_left - (nbits)))) & ((1<<(nbits))-1))
#define drop_bits(state,nbits) \
((state).cur.bits_left -= (nbits))
/*
* Code for extracting next Huffman-coded symbol from input bit stream.
* We use a lookahead table to process codes of up to HUFF_LOOKAHEAD bits
* without looping. Usually, more than 95% of the Huffman codes will be 8
* or fewer bits long. The few overlength codes are handled with a loop.
* The primary case is made a macro for speed reasons; the secondary
* routine slow_DECODE is rarely entered and need not be inline code.
*
* Notes about the huff_DECODE macro:
* 1. Near the end of the data segment, we may fail to get enough bits
* for a lookahead. In that case, we do it the hard way.
* 2. If the lookahead table contains no entry, the next code must be
* more than HUFF_LOOKAHEAD bits long.
* 3. slow_DECODE returns -1 if forced to suspend.
*/
#define huff_DECODE(result,state,htbl,donelabel) \
{ if (state.cur.bits_left < HUFF_LOOKAHEAD) { \
if (! fill_bit_buffer(&state, 0)) return FALSE; \
if (state.cur.bits_left < HUFF_LOOKAHEAD) { \
if ((result = slow_DECODE(&state, htbl, 1)) < 0) return FALSE; \
goto donelabel; \
} \
} \
{ register int nb, look; \
look = peek_bits(state, HUFF_LOOKAHEAD); \
if ((nb = htbl->look_nbits[look]) != 0) { \
drop_bits(state, nb); \
result = htbl->look_sym[look]; \
} else { \
if ((result = slow_DECODE(&state, htbl, HUFF_LOOKAHEAD+1)) < 0) \
return FALSE; \
} \
} \
donelabel:; \
}
LOCAL int
slow_DECODE (working_state * state, D_DERIVED_TBL * htbl, int min_bits)
GLOBAL int
jpeg_huff_decode (bitread_working_state * state,
register bit_buf_type get_buffer, register int bits_left,
d_derived_tbl * htbl, int min_bits)
{
register int l = min_bits;
register INT32 code;
/* huff_DECODE has determined that the code is at least min_bits */
/* HUFF_DECODE has determined that the code is at least min_bits */
/* bits long, so fetch that many bits in one swoop. */
check_bit_buffer(*state, l, return -1);
code = get_bits(*state, l);
CHECK_BIT_BUFFER(*state, l, return -1);
code = GET_BITS(l);
/* Collect the rest of the Huffman code one bit at a time. */
/* This is per Figure F.16 in the JPEG spec. */
while (code > htbl->maxcode[l]) {
code <<= 1;
check_bit_buffer(*state, 1, return -1);
code |= get_bits(*state, 1);
CHECK_BIT_BUFFER(*state, 1, return -1);
code |= GET_BITS(1);
l++;
}
/* Unload the local registers */
state->get_buffer = get_buffer;
state->bits_left = bits_left;
/* With garbage input we may reach the sentinel value l = 17. */
if (l > 16) {
@ -453,17 +358,18 @@ slow_DECODE (working_state * state, D_DERIVED_TBL * htbl, int min_bits)
}
/* Figure F.12: extend sign bit.
/*
* Figure F.12: extend sign bit.
* On some machines, a shift and add will be faster than a table lookup.
*/
#ifdef AVOID_TABLES
#define huff_EXTEND(x,s) ((x) < (1<<((s)-1)) ? (x) + (((-1)<<(s)) + 1) : (x))
#define HUFF_EXTEND(x,s) ((x) < (1<<((s)-1)) ? (x) + (((-1)<<(s)) + 1) : (x))
#else
#define huff_EXTEND(x,s) ((x) < extend_test[s] ? (x) + extend_offset[s] : (x))
#define HUFF_EXTEND(x,s) ((x) < extend_test[s] ? (x) + extend_offset[s] : (x))
static const int extend_test[16] = /* entry n is 2**(n-1) */
{ 0, 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
@ -491,8 +397,8 @@ process_restart (j_decompress_ptr cinfo)
/* Throw away any unused bits remaining in bit buffer; */
/* include any full bytes in next_marker's count of discarded bytes */
cinfo->marker->discarded_bytes += entropy->saved.bits_left / 8;
entropy->saved.bits_left = 0;
cinfo->marker->discarded_bytes += entropy->bitstate.bits_left / 8;
entropy->bitstate.bits_left = 0;
/* Advance past the RSTn marker */
if (! (*cinfo->marker->read_restart_marker) (cinfo))
@ -505,32 +411,13 @@ process_restart (j_decompress_ptr cinfo)
/* Reset restart counter */
entropy->restarts_to_go = cinfo->restart_interval;
entropy->printed_eod = FALSE; /* next segment can get another warning */
/* Next segment can get another out-of-data warning */
entropy->bitstate.printed_eod = FALSE;
return TRUE;
}
/* ZAG[i] is the natural-order position of the i'th element of zigzag order.
* If the incoming data is corrupted, decode_mcu could attempt to
* reference values beyond the end of the array. To avoid a wild store,
* we put some extra zeroes after the real entries.
*/
static const int ZAG[DCTSIZE2+16] = {
0, 1, 8, 16, 9, 2, 3, 10,
17, 24, 32, 25, 18, 11, 4, 5,
12, 19, 26, 33, 40, 48, 41, 34,
27, 20, 13, 6, 7, 14, 21, 28,
35, 42, 49, 56, 57, 50, 43, 36,
29, 22, 15, 23, 30, 37, 44, 51,
58, 59, 52, 45, 38, 31, 39, 46,
53, 60, 61, 54, 47, 55, 62, 63,
0, 0, 0, 0, 0, 0, 0, 0, /* extra entries in case k>63 below */
0, 0, 0, 0, 0, 0, 0, 0
};
/*
* Decode and return one MCU's worth of Huffman-compressed coefficients.
* The coefficients are reordered from zigzag order into natural array order,
@ -543,7 +430,7 @@ static const int ZAG[DCTSIZE2+16] = {
* Returns FALSE if data source requested suspension. In that case no
* changes have been made to permanent state. (Exception: some output
* coefficients may already have been assigned. This is harmless for
* this module, but would not work for decoding progressive JPEG.)
* this module, since we'll just re-assign them on the next call.)
*/
METHODDEF boolean
@ -553,9 +440,10 @@ decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
register int s, k, r;
int blkn, ci;
JBLOCKROW block;
working_state state;
D_DERIVED_TBL * dctbl;
D_DERIVED_TBL * actbl;
BITREAD_STATE_VARS;
savable_state state;
d_derived_tbl * dctbl;
d_derived_tbl * actbl;
jpeg_component_info * compptr;
/* Process restart marker if needed; may have to suspend */
@ -566,11 +454,8 @@ decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
}
/* Load up working state */
state.unread_marker = cinfo->unread_marker;
state.next_input_byte = cinfo->src->next_input_byte;
state.bytes_in_buffer = cinfo->src->bytes_in_buffer;
ASSIGN_STATE(state.cur, entropy->saved);
state.cinfo = cinfo;
BITREAD_LOAD_STATE(cinfo,entropy->bitstate);
ASSIGN_STATE(state, entropy->saved);
/* Outer loop handles each block in the MCU */
@ -584,11 +469,11 @@ decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
/* Decode a single block's worth of coefficients */
/* Section F.2.2.1: decode the DC coefficient difference */
huff_DECODE(s, state, dctbl, label1);
HUFF_DECODE(s, br_state, dctbl, return FALSE, label1);
if (s) {
check_bit_buffer(state, s, return FALSE);
r = get_bits(state, s);
s = huff_EXTEND(r, s);
CHECK_BIT_BUFFER(br_state, s, return FALSE);
r = GET_BITS(s);
s = HUFF_EXTEND(r, s);
}
/* Shortcut if component's values are not interesting */
@ -596,9 +481,9 @@ decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
goto skip_ACs;
/* Convert DC difference to actual value, update last_dc_val */
s += state.cur.last_dc_val[ci];
state.cur.last_dc_val[ci] = s;
/* Output the DC coefficient (assumes ZAG[0] = 0) */
s += state.last_dc_val[ci];
state.last_dc_val[ci] = s;
/* Output the DC coefficient (assumes jpeg_natural_order[0] = 0) */
(*block)[0] = (JCOEF) s;
/* Do we need to decode the AC coefficients for this component? */
@ -607,18 +492,21 @@ decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
/* Section F.2.2.2: decode the AC coefficients */
/* Since zeroes are skipped, output area must be cleared beforehand */
for (k = 1; k < DCTSIZE2; k++) {
huff_DECODE(s, state, actbl, label2);
HUFF_DECODE(s, br_state, actbl, return FALSE, label2);
r = s >> 4;
s &= 15;
if (s) {
k += r;
check_bit_buffer(state, s, return FALSE);
r = get_bits(state, s);
s = huff_EXTEND(r, s);
/* Output coefficient in natural (dezigzagged) order */
(*block)[ZAG[k]] = (JCOEF) s;
CHECK_BIT_BUFFER(br_state, s, return FALSE);
r = GET_BITS(s);
s = HUFF_EXTEND(r, s);
/* Output coefficient in natural (dezigzagged) order.
* Note: the extra entries in jpeg_natural_order[] will save us
* if k >= DCTSIZE2, which could happen if the data is corrupted.
*/
(*block)[jpeg_natural_order[k]] = (JCOEF) s;
} else {
if (r != 15)
break;
@ -632,15 +520,15 @@ skip_ACs:
/* Section F.2.2.2: decode the AC coefficients */
/* In this path we just discard the values */
for (k = 1; k < DCTSIZE2; k++) {
huff_DECODE(s, state, actbl, label3);
HUFF_DECODE(s, br_state, actbl, return FALSE, label3);
r = s >> 4;
s &= 15;
if (s) {
k += r;
check_bit_buffer(state, s, return FALSE);
drop_bits(state, s);
CHECK_BIT_BUFFER(br_state, s, return FALSE);
DROP_BITS(s);
} else {
if (r != 15)
break;
@ -652,10 +540,8 @@ skip_ACs:
}
/* Completed MCU, so update state */
cinfo->unread_marker = state.unread_marker;
cinfo->src->next_input_byte = state.next_input_byte;
cinfo->src->bytes_in_buffer = state.bytes_in_buffer;
ASSIGN_STATE(entropy->saved, state.cur);
BITREAD_SAVE_STATE(cinfo,entropy->bitstate);
ASSIGN_STATE(entropy->saved, state);
/* Account for restart interval (no-op if not using restarts) */
entropy->restarts_to_go--;

202
jdhuff.h Normal file
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@ -0,0 +1,202 @@
/*
* jdhuff.h
*
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains declarations for Huffman entropy decoding routines
* that are shared between the sequential decoder (jdhuff.c) and the
* progressive decoder (jdphuff.c). No other modules need to see these.
*/
/* Short forms of external names for systems with brain-damaged linkers. */
#ifdef NEED_SHORT_EXTERNAL_NAMES
#define jpeg_make_d_derived_tbl jMkDDerived
#define jpeg_fill_bit_buffer jFilBitBuf
#define jpeg_huff_decode jHufDecode
#endif /* NEED_SHORT_EXTERNAL_NAMES */
/* Derived data constructed for each Huffman table */
#define HUFF_LOOKAHEAD 8 /* # of bits of lookahead */
typedef struct {
/* Basic tables: (element [0] of each array is unused) */
INT32 mincode[17]; /* smallest code of length k */
INT32 maxcode[18]; /* largest code of length k (-1 if none) */
/* (maxcode[17] is a sentinel to ensure jpeg_huff_decode terminates) */
int valptr[17]; /* huffval[] index of 1st symbol of length k */
/* Link to public Huffman table (needed only in jpeg_huff_decode) */
JHUFF_TBL *pub;
/* Lookahead tables: indexed by the next HUFF_LOOKAHEAD bits of
* the input data stream. If the next Huffman code is no more
* than HUFF_LOOKAHEAD bits long, we can obtain its length and
* the corresponding symbol directly from these tables.
*/
int look_nbits[1<<HUFF_LOOKAHEAD]; /* # bits, or 0 if too long */
UINT8 look_sym[1<<HUFF_LOOKAHEAD]; /* symbol, or unused */
} d_derived_tbl;
/* Expand a Huffman table definition into the derived format */
EXTERN void jpeg_make_d_derived_tbl JPP((j_decompress_ptr cinfo,
JHUFF_TBL * htbl, d_derived_tbl ** pdtbl));
/*
* Fetching the next N bits from the input stream is a time-critical operation
* for the Huffman decoders. We implement it with a combination of inline
* macros and out-of-line subroutines. Note that N (the number of bits
* demanded at one time) never exceeds 15 for JPEG use.
*
* We read source bytes into get_buffer and dole out bits as needed.
* If get_buffer already contains enough bits, they are fetched in-line
* by the macros CHECK_BIT_BUFFER and GET_BITS. When there aren't enough
* bits, jpeg_fill_bit_buffer is called; it will attempt to fill get_buffer
* as full as possible (not just to the number of bits needed; this
* prefetching reduces the overhead cost of calling jpeg_fill_bit_buffer).
* Note that jpeg_fill_bit_buffer may return FALSE to indicate suspension.
* On TRUE return, jpeg_fill_bit_buffer guarantees that get_buffer contains
* at least the requested number of bits --- dummy zeroes are inserted if
* necessary.
*/
typedef INT32 bit_buf_type; /* type of bit-extraction buffer */
#define BIT_BUF_SIZE 32 /* size of buffer in bits */
/* If long is > 32 bits on your machine, and shifting/masking longs is
* reasonably fast, making bit_buf_type be long and setting BIT_BUF_SIZE
* appropriately should be a win. Unfortunately we can't do this with
* something like #define BIT_BUF_SIZE (sizeof(bit_buf_type)*8)
* because not all machines measure sizeof in 8-bit bytes.
*/
typedef struct { /* Bitreading state saved across MCUs */
bit_buf_type get_buffer; /* current bit-extraction buffer */
int bits_left; /* # of unused bits in it */
boolean printed_eod; /* flag to suppress multiple warning msgs */
} bitread_perm_state;
typedef struct { /* Bitreading working state within an MCU */
/* current data source state */
const JOCTET * next_input_byte; /* => next byte to read from source */
size_t bytes_in_buffer; /* # of bytes remaining in source buffer */
int unread_marker; /* nonzero if we have hit a marker */
/* bit input buffer --- note these values are kept in register variables,
* not in this struct, inside the inner loops.
*/
bit_buf_type get_buffer; /* current bit-extraction buffer */
int bits_left; /* # of unused bits in it */
/* pointers needed by jpeg_fill_bit_buffer */
j_decompress_ptr cinfo; /* back link to decompress master record */
boolean * printed_eod_ptr; /* => flag in permanent state */
} bitread_working_state;
/* Macros to declare and load/save bitread local variables. */
#define BITREAD_STATE_VARS \
register bit_buf_type get_buffer; \
register int bits_left; \
bitread_working_state br_state
#define BITREAD_LOAD_STATE(cinfop,permstate) \
br_state.cinfo = cinfop; \
br_state.next_input_byte = cinfop->src->next_input_byte; \
br_state.bytes_in_buffer = cinfop->src->bytes_in_buffer; \
br_state.unread_marker = cinfop->unread_marker; \
get_buffer = permstate.get_buffer; \
bits_left = permstate.bits_left; \
br_state.printed_eod_ptr = & permstate.printed_eod
#define BITREAD_SAVE_STATE(cinfop,permstate) \
cinfop->src->next_input_byte = br_state.next_input_byte; \
cinfop->src->bytes_in_buffer = br_state.bytes_in_buffer; \
cinfop->unread_marker = br_state.unread_marker; \
permstate.get_buffer = get_buffer; \
permstate.bits_left = bits_left
/*
* These macros provide the in-line portion of bit fetching.
* Use CHECK_BIT_BUFFER to ensure there are N bits in get_buffer
* before using GET_BITS, PEEK_BITS, or DROP_BITS.
* The variables get_buffer and bits_left are assumed to be locals,
* but the state struct might not be (jpeg_huff_decode needs this).
* CHECK_BIT_BUFFER(state,n,action);
* Ensure there are N bits in get_buffer; if suspend, take action.
* val = GET_BITS(n);
* Fetch next N bits.
* val = PEEK_BITS(n);
* Fetch next N bits without removing them from the buffer.
* DROP_BITS(n);
* Discard next N bits.
* The value N should be a simple variable, not an expression, because it
* is evaluated multiple times.
*/
#define CHECK_BIT_BUFFER(state,nbits,action) \
{ if (bits_left < (nbits)) { \
if (! jpeg_fill_bit_buffer(&(state),get_buffer,bits_left,nbits)) \
{ action; } \
get_buffer = (state).get_buffer; bits_left = (state).bits_left; } }
#define GET_BITS(nbits) \
(((int) (get_buffer >> (bits_left -= (nbits)))) & ((1<<(nbits))-1))
#define PEEK_BITS(nbits) \
(((int) (get_buffer >> (bits_left - (nbits)))) & ((1<<(nbits))-1))
#define DROP_BITS(nbits) \
(bits_left -= (nbits))
/* Load up the bit buffer to a depth of at least nbits */
EXTERN boolean jpeg_fill_bit_buffer JPP((bitread_working_state * state,
register bit_buf_type get_buffer, register int bits_left,
int nbits));
/*
* Code for extracting next Huffman-coded symbol from input bit stream.
* Again, this is time-critical and we make the main paths be macros.
*
* We use a lookahead table to process codes of up to HUFF_LOOKAHEAD bits
* without looping. Usually, more than 95% of the Huffman codes will be 8
* or fewer bits long. The few overlength codes are handled with a loop,
* which need not be inline code.
*
* Notes about the HUFF_DECODE macro:
* 1. Near the end of the data segment, we may fail to get enough bits
* for a lookahead. In that case, we do it the hard way.
* 2. If the lookahead table contains no entry, the next code must be
* more than HUFF_LOOKAHEAD bits long.
* 3. jpeg_huff_decode returns -1 if forced to suspend.
*/
#define HUFF_DECODE(result,state,htbl,failaction,slowlabel) \
{ register int nb, look; \
if (bits_left < HUFF_LOOKAHEAD) { \
if (! jpeg_fill_bit_buffer(&state,get_buffer,bits_left, 0)) {failaction;} \
get_buffer = state.get_buffer; bits_left = state.bits_left; \
if (bits_left < HUFF_LOOKAHEAD) { \
nb = 1; goto slowlabel; \
} \
} \
look = PEEK_BITS(HUFF_LOOKAHEAD); \
if ((nb = htbl->look_nbits[look]) != 0) { \
DROP_BITS(nb); \
result = htbl->look_sym[look]; \
} else { \
nb = HUFF_LOOKAHEAD+1; \
slowlabel: \
if ((result=jpeg_huff_decode(&state,get_buffer,bits_left,htbl,nb)) < 0) \
{ failaction; } \
get_buffer = state.get_buffer; bits_left = state.bits_left; \
} \
}
/* Out-of-line case for Huffman code fetching */
EXTERN int jpeg_huff_decode JPP((bitread_working_state * state,
register bit_buf_type get_buffer, register int bits_left,
d_derived_tbl * htbl, int min_bits));

381
jdinput.c Normal file
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@ -0,0 +1,381 @@
/*
* jdinput.c
*
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains input control logic for the JPEG decompressor.
* These routines are concerned with controlling the decompressor's input
* processing (marker reading and coefficient decoding). The actual input
* reading is done in jdmarker.c, jdhuff.c, and jdphuff.c.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Private state */
typedef struct {
struct jpeg_input_controller pub; /* public fields */
boolean inheaders; /* TRUE until first SOS is reached */
} my_input_controller;
typedef my_input_controller * my_inputctl_ptr;
/* Forward declarations */
METHODDEF int consume_markers JPP((j_decompress_ptr cinfo));
/*
* Routines to calculate various quantities related to the size of the image.
*/
LOCAL void
initial_setup (j_decompress_ptr cinfo)
/* Called once, when first SOS marker is reached */
{
int ci;
jpeg_component_info *compptr;
/* Make sure image isn't bigger than I can handle */
if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION ||
(long) cinfo->image_width > (long) JPEG_MAX_DIMENSION)
ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
/* For now, precision must match compiled-in value... */
if (cinfo->data_precision != BITS_IN_JSAMPLE)
ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
/* Check that number of components won't exceed internal array sizes */
if (cinfo->num_components > MAX_COMPONENTS)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
MAX_COMPONENTS);
/* Compute maximum sampling factors; check factor validity */
cinfo->max_h_samp_factor = 1;
cinfo->max_v_samp_factor = 1;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR ||
compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
ERREXIT(cinfo, JERR_BAD_SAMPLING);
cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,
compptr->h_samp_factor);
cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor,
compptr->v_samp_factor);
}
/* We initialize DCT_scaled_size and min_DCT_scaled_size to DCTSIZE.
* In the full decompressor, this will be overridden by jdmaster.c;
* but in the transcoder, jdmaster.c is not used, so we must do it here.
*/
cinfo->min_DCT_scaled_size = DCTSIZE;
/* Compute dimensions of components */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
compptr->DCT_scaled_size = DCTSIZE;
/* Size in DCT blocks */
compptr->width_in_blocks = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,
(long) (cinfo->max_h_samp_factor * DCTSIZE));
compptr->height_in_blocks = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
(long) (cinfo->max_v_samp_factor * DCTSIZE));
/* downsampled_width and downsampled_height will also be overridden by
* jdmaster.c if we are doing full decompression. The transcoder library
* doesn't use these values, but the calling application might.
*/
/* Size in samples */
compptr->downsampled_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,
(long) cinfo->max_h_samp_factor);
compptr->downsampled_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
(long) cinfo->max_v_samp_factor);
/* Mark component needed, until color conversion says otherwise */
compptr->component_needed = TRUE;
/* Mark no quantization table yet saved for component */
compptr->quant_table = NULL;
}
/* Compute number of fully interleaved MCU rows. */
cinfo->total_iMCU_rows = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height,
(long) (cinfo->max_v_samp_factor*DCTSIZE));
/* Decide whether file contains multiple scans */
if (cinfo->comps_in_scan < cinfo->num_components || cinfo->progressive_mode)
cinfo->inputctl->has_multiple_scans = TRUE;
else
cinfo->inputctl->has_multiple_scans = FALSE;
}
LOCAL void
per_scan_setup (j_decompress_ptr cinfo)
/* Do computations that are needed before processing a JPEG scan */
/* cinfo->comps_in_scan and cinfo->cur_comp_info[] were set from SOS marker */
{
int ci, mcublks, tmp;
jpeg_component_info *compptr;
if (cinfo->comps_in_scan == 1) {
/* Noninterleaved (single-component) scan */
compptr = cinfo->cur_comp_info[0];
/* Overall image size in MCUs */
cinfo->MCUs_per_row = compptr->width_in_blocks;
cinfo->MCU_rows_in_scan = compptr->height_in_blocks;
/* For noninterleaved scan, always one block per MCU */
compptr->MCU_width = 1;
compptr->MCU_height = 1;
compptr->MCU_blocks = 1;
compptr->MCU_sample_width = compptr->DCT_scaled_size;
compptr->last_col_width = 1;
/* For noninterleaved scans, it is convenient to define last_row_height
* as the number of block rows present in the last iMCU row.
*/
tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
if (tmp == 0) tmp = compptr->v_samp_factor;
compptr->last_row_height = tmp;
/* Prepare array describing MCU composition */
cinfo->blocks_in_MCU = 1;
cinfo->MCU_membership[0] = 0;
} else {
/* Interleaved (multi-component) scan */
if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan,
MAX_COMPS_IN_SCAN);
/* Overall image size in MCUs */
cinfo->MCUs_per_row = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width,
(long) (cinfo->max_h_samp_factor*DCTSIZE));
cinfo->MCU_rows_in_scan = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height,
(long) (cinfo->max_v_samp_factor*DCTSIZE));
cinfo->blocks_in_MCU = 0;
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
/* Sampling factors give # of blocks of component in each MCU */
compptr->MCU_width = compptr->h_samp_factor;
compptr->MCU_height = compptr->v_samp_factor;
compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height;
compptr->MCU_sample_width = compptr->MCU_width * compptr->DCT_scaled_size;
/* Figure number of non-dummy blocks in last MCU column & row */
tmp = (int) (compptr->width_in_blocks % compptr->MCU_width);
if (tmp == 0) tmp = compptr->MCU_width;
compptr->last_col_width = tmp;
tmp = (int) (compptr->height_in_blocks % compptr->MCU_height);
if (tmp == 0) tmp = compptr->MCU_height;
compptr->last_row_height = tmp;
/* Prepare array describing MCU composition */
mcublks = compptr->MCU_blocks;
if (cinfo->blocks_in_MCU + mcublks > D_MAX_BLOCKS_IN_MCU)
ERREXIT(cinfo, JERR_BAD_MCU_SIZE);
while (mcublks-- > 0) {
cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;
}
}
}
}
/*
* Save away a copy of the Q-table referenced by each component present
* in the current scan, unless already saved during a prior scan.
*
* In a multiple-scan JPEG file, the encoder could assign different components
* the same Q-table slot number, but change table definitions between scans
* so that each component uses a different Q-table. (The IJG encoder is not
* currently capable of doing this, but other encoders might.) Since we want
* to be able to dequantize all the components at the end of the file, this
* means that we have to save away the table actually used for each component.
* We do this by copying the table at the start of the first scan containing
* the component.
* The JPEG spec prohibits the encoder from changing the contents of a Q-table
* slot between scans of a component using that slot. If the encoder does so
* anyway, this decoder will simply use the Q-table values that were current
* at the start of the first scan for the component.
*
* The decompressor output side looks only at the saved quant tables,
* not at the current Q-table slots.
*/
LOCAL void
latch_quant_tables (j_decompress_ptr cinfo)
{
int ci, qtblno;
jpeg_component_info *compptr;
JQUANT_TBL * qtbl;
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
/* No work if we already saved Q-table for this component */
if (compptr->quant_table != NULL)
continue;
/* Make sure specified quantization table is present */
qtblno = compptr->quant_tbl_no;
if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS ||
cinfo->quant_tbl_ptrs[qtblno] == NULL)
ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno);
/* OK, save away the quantization table */
qtbl = (JQUANT_TBL *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(JQUANT_TBL));
MEMCOPY(qtbl, cinfo->quant_tbl_ptrs[qtblno], SIZEOF(JQUANT_TBL));
compptr->quant_table = qtbl;
}
}
/*
* Initialize the input modules to read a scan of compressed data.
* The first call to this is done by jdmaster.c after initializing
* the entire decompressor (during jpeg_start_decompress).
* Subsequent calls come from consume_markers, below.
*/
METHODDEF void
start_input_pass (j_decompress_ptr cinfo)
{
per_scan_setup(cinfo);
latch_quant_tables(cinfo);
(*cinfo->entropy->start_pass) (cinfo);
(*cinfo->coef->start_input_pass) (cinfo);
cinfo->inputctl->consume_input = cinfo->coef->consume_data;
}
/*
* Finish up after inputting a compressed-data scan.
* This is called by the coefficient controller after it's read all
* the expected data of the scan.
*/
METHODDEF void
finish_input_pass (j_decompress_ptr cinfo)
{
cinfo->inputctl->consume_input = consume_markers;
}
/*
* Read JPEG markers before, between, or after compressed-data scans.
* Change state as necessary when a new scan is reached.
* Return value is JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
*
* The consume_input method pointer points either here or to the
* coefficient controller's consume_data routine, depending on whether
* we are reading a compressed data segment or inter-segment markers.
*/
METHODDEF int
consume_markers (j_decompress_ptr cinfo)
{
my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl;
int val;
if (inputctl->pub.eoi_reached) /* After hitting EOI, read no further */
return JPEG_REACHED_EOI;
val = (*cinfo->marker->read_markers) (cinfo);
switch (val) {
case JPEG_REACHED_SOS: /* Found SOS */
if (inputctl->inheaders) { /* 1st SOS */
initial_setup(cinfo);
inputctl->inheaders = FALSE;
/* Note: start_input_pass must be called by jdmaster.c
* before any more input can be consumed. jdapi.c is
* responsible for enforcing this sequencing.
*/
} else { /* 2nd or later SOS marker */
if (! inputctl->pub.has_multiple_scans)
ERREXIT(cinfo, JERR_EOI_EXPECTED); /* Oops, I wasn't expecting this! */
start_input_pass(cinfo);
}
break;
case JPEG_REACHED_EOI: /* Found EOI */
inputctl->pub.eoi_reached = TRUE;
if (inputctl->inheaders) { /* Tables-only datastream, apparently */
if (cinfo->marker->saw_SOF)
ERREXIT(cinfo, JERR_SOF_NO_SOS);
} else {
/* Prevent infinite loop in coef ctlr's decompress_data routine
* if user set output_scan_number larger than number of scans.
*/
if (cinfo->output_scan_number > cinfo->input_scan_number)
cinfo->output_scan_number = cinfo->input_scan_number;
}
break;
case JPEG_SUSPENDED:
break;
}
return val;
}
/*
* Reset state to begin a fresh datastream.
*/
METHODDEF void
reset_input_controller (j_decompress_ptr cinfo)
{
my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl;
inputctl->pub.consume_input = consume_markers;
inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */
inputctl->pub.eoi_reached = FALSE;
inputctl->inheaders = TRUE;
/* Reset other modules */
(*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
(*cinfo->marker->reset_marker_reader) (cinfo);
/* Reset progression state -- would be cleaner if entropy decoder did this */
cinfo->coef_bits = NULL;
}
/*
* Initialize the input controller module.
* This is called only once, when the decompression object is created.
*/
GLOBAL void
jinit_input_controller (j_decompress_ptr cinfo)
{
my_inputctl_ptr inputctl;
/* Create subobject in permanent pool */
inputctl = (my_inputctl_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
SIZEOF(my_input_controller));
cinfo->inputctl = (struct jpeg_input_controller *) inputctl;
/* Initialize method pointers */
inputctl->pub.consume_input = consume_markers;
inputctl->pub.reset_input_controller = reset_input_controller;
inputctl->pub.start_input_pass = start_input_pass;
inputctl->pub.finish_input_pass = finish_input_pass;
/* Initialize state: can't use reset_input_controller since we don't
* want to try to reset other modules yet.
*/
inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */
inputctl->pub.eoi_reached = FALSE;
inputctl->inheaders = TRUE;
}

99
jdmainct.c
View File

@ -1,13 +1,16 @@
/*
* jdmainct.c
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains the main buffer controller for decompression.
* The main buffer lies between the JPEG decompressor proper and the
* post-processor; it holds downsampled data in the JPEG colorspace.
*
* Note that this code is bypassed in raw-data mode, since the application
* supplies the equivalent of the main buffer in that case.
*/
#define JPEG_INTERNALS
@ -143,11 +146,6 @@ METHODDEF void process_data_simple_main
METHODDEF void process_data_context_main
JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf,
JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail));
#ifdef D_MULTISCAN_FILES_SUPPORTED
METHODDEF void process_data_input_only
JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf,
JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail));
#endif
#ifdef QUANT_2PASS_SUPPORTED
METHODDEF void process_data_crank_post
JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf,
@ -156,17 +154,16 @@ METHODDEF void process_data_crank_post
LOCAL void
make_funny_pointers (j_decompress_ptr cinfo)
/* Create the funny pointer lists discussed in the comments above.
* The actual workspace is already allocated (in main->buffer),
* we just have to make the curiously ordered lists.
alloc_funny_pointers (j_decompress_ptr cinfo)
/* Allocate space for the funny pointer lists.
* This is done only once, not once per pass.
*/
{
my_main_ptr main = (my_main_ptr) cinfo->main;
int ci, i, rgroup;
int ci, rgroup;
int M = cinfo->min_DCT_scaled_size;
jpeg_component_info *compptr;
JSAMPARRAY buf, xbuf0, xbuf1;
JSAMPARRAY xbuf;
/* Get top-level space for component array pointers.
* We alloc both arrays with one call to save a few cycles.
@ -183,13 +180,38 @@ make_funny_pointers (j_decompress_ptr cinfo)
/* Get space for pointer lists --- M+4 row groups in each list.
* We alloc both pointer lists with one call to save a few cycles.
*/
xbuf0 = (JSAMPARRAY)
xbuf = (JSAMPARRAY)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
2 * (rgroup * (M + 4)) * SIZEOF(JSAMPROW));
xbuf0 += rgroup; /* want one row group at negative offsets */
main->xbuffer[0][ci] = xbuf0;
xbuf1 = xbuf0 + (rgroup * (M + 4));
main->xbuffer[1][ci] = xbuf1;
xbuf += rgroup; /* want one row group at negative offsets */
main->xbuffer[0][ci] = xbuf;
xbuf += rgroup * (M + 4);
main->xbuffer[1][ci] = xbuf;
}
}
LOCAL void
make_funny_pointers (j_decompress_ptr cinfo)
/* Create the funny pointer lists discussed in the comments above.
* The actual workspace is already allocated (in main->buffer),
* and the space for the pointer lists is allocated too.
* This routine just fills in the curiously ordered lists.
* This will be repeated at the beginning of each pass.
*/
{
my_main_ptr main = (my_main_ptr) cinfo->main;
int ci, i, rgroup;
int M = cinfo->min_DCT_scaled_size;
jpeg_component_info *compptr;
JSAMPARRAY buf, xbuf0, xbuf1;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) /
cinfo->min_DCT_scaled_size; /* height of a row group of component */
xbuf0 = main->xbuffer[0][ci];
xbuf1 = main->xbuffer[1][ci];
/* First copy the workspace pointers as-is */
buf = main->buffer[ci];
for (i = 0; i < rgroup * (M + 2); i++) {
@ -286,14 +308,8 @@ start_pass_main (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)
{
my_main_ptr main = (my_main_ptr) cinfo->main;
/* Processing chunks are output rows except in JBUF_CRANK_SOURCE mode. */
main->pub.num_chunks = cinfo->output_height;
switch (pass_mode) {
case JBUF_PASS_THRU:
/* Do nothing if raw-data mode. */
if (cinfo->raw_data_out)
return;
if (cinfo->upsample->need_context_rows) {
main->pub.process_data = process_data_context_main;
make_funny_pointers(cinfo); /* Create the xbuffer[] lists */
@ -307,14 +323,6 @@ start_pass_main (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)
main->buffer_full = FALSE; /* Mark buffer empty */
main->rowgroup_ctr = 0;
break;
#ifdef D_MULTISCAN_FILES_SUPPORTED
case JBUF_CRANK_SOURCE:
/* Reading a multi-scan file, just crank the decompressor */
main->pub.process_data = process_data_input_only;
/* decompressor needs to be called once for each (equivalent) iMCU row */
main->pub.num_chunks = cinfo->total_iMCU_rows;
break;
#endif
#ifdef QUANT_2PASS_SUPPORTED
case JBUF_CRANK_DEST:
/* For last pass of 2-pass quantization, just crank the postprocessor */
@ -439,27 +447,6 @@ process_data_context_main (j_decompress_ptr cinfo,
}
/*
* Process some data.
* Initial passes in a multiple-scan file: just call the decompressor,
* which will save data in its internal buffer, but return nothing.
*/
#ifdef D_MULTISCAN_FILES_SUPPORTED
METHODDEF void
process_data_input_only (j_decompress_ptr cinfo,
JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
JDIMENSION out_rows_avail)
{
if (! (*cinfo->coef->decompress_data) (cinfo, (JSAMPIMAGE) NULL))
return; /* suspension forced, can do nothing more */
*out_row_ctr += 1; /* OK, we did one iMCU row */
}
#endif /* D_MULTISCAN_FILES_SUPPORTED */
/*
* Process some data.
* Final pass of two-pass quantization: just call the postprocessor.
@ -501,19 +488,13 @@ jinit_d_main_controller (j_decompress_ptr cinfo, boolean need_full_buffer)
if (need_full_buffer) /* shouldn't happen */
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
/* In raw-data mode, we don't need a workspace. This module doesn't
* do anything useful in that mode, except pass calls through to the
* coef controller in CRANK_SOURCE mode (ie, reading a multiscan file).
*/
if (cinfo->raw_data_out)
return;
/* Allocate the workspace.
* ngroups is the number of row groups we need.
*/
if (cinfo->upsample->need_context_rows) {
if (cinfo->min_DCT_scaled_size < 2) /* unsupported, see comments above */
ERREXIT(cinfo, JERR_NOTIMPL);
alloc_funny_pointers(cinfo); /* Alloc space for xbuffer[] lists */
ngroups = cinfo->min_DCT_scaled_size + 2;
} else {
ngroups = cinfo->min_DCT_scaled_size;

108
jdmarker.c
View File

@ -1,7 +1,7 @@
/*
* jdmarker.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -201,7 +201,7 @@ get_soi (j_decompress_ptr cinfo)
LOCAL boolean
get_sof (j_decompress_ptr cinfo)
get_sof (j_decompress_ptr cinfo, boolean is_prog, boolean is_arith)
/* Process a SOFn marker */
{
INT32 length;
@ -209,6 +209,9 @@ get_sof (j_decompress_ptr cinfo)
jpeg_component_info * compptr;
INPUT_VARS(cinfo);
cinfo->progressive_mode = is_prog;
cinfo->arith_code = is_arith;
INPUT_2BYTES(cinfo, length, return FALSE);
INPUT_BYTE(cinfo, cinfo->data_precision, return FALSE);
@ -232,20 +235,6 @@ get_sof (j_decompress_ptr cinfo)
|| cinfo->num_components <= 0)
ERREXIT(cinfo, JERR_EMPTY_IMAGE);
/* Make sure image isn't bigger than I can handle */
if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION ||
(long) cinfo->image_width > (long) JPEG_MAX_DIMENSION)
ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
/* For now, precision must match compiled-in value... */
if (cinfo->data_precision != BITS_IN_JSAMPLE)
ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
/* Check that number of components won't exceed internal array sizes */
if (cinfo->num_components > MAX_COMPONENTS)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
MAX_COMPONENTS);
if (length != (cinfo->num_components * 3))
ERREXIT(cinfo, JERR_BAD_LENGTH);
@ -280,7 +269,7 @@ get_sos (j_decompress_ptr cinfo)
/* Process a SOS marker */
{
INT32 length;
int i, ci, n, c, cc, ccc;
int i, ci, n, c, cc;
jpeg_component_info * compptr;
INPUT_VARS(cinfo);
@ -322,21 +311,24 @@ get_sos (j_decompress_ptr cinfo)
compptr->dc_tbl_no, compptr->ac_tbl_no);
}
/* Collect the additional scan parameters Ss, Se, Ah/Al.
* Currently we just validate that they are right for sequential JPEG.
* This ought to be an error condition, but we make it a warning because
* there are some baseline files out there with all zeroes in these bytes.
* (Thank you, Logitech :-(.)
*/
/* Collect the additional scan parameters Ss, Se, Ah/Al. */
INPUT_BYTE(cinfo, c, return FALSE);
INPUT_BYTE(cinfo, cc, return FALSE);
INPUT_BYTE(cinfo, ccc, return FALSE);
if (c != 0 || cc != DCTSIZE2-1 || ccc != 0)
WARNMS(cinfo, JWRN_NOT_SEQUENTIAL);
cinfo->Ss = c;
INPUT_BYTE(cinfo, c, return FALSE);
cinfo->Se = c;
INPUT_BYTE(cinfo, c, return FALSE);
cinfo->Ah = (c >> 4) & 15;
cinfo->Al = (c ) & 15;
TRACEMS4(cinfo, 1, JTRC_SOS_PARAMS, cinfo->Ss, cinfo->Se,
cinfo->Ah, cinfo->Al);
/* Prepare to scan data & restart markers */
cinfo->marker->next_restart_num = 0;
/* Count another SOS marker */
cinfo->input_scan_number++;
INPUT_SYNC(cinfo);
return TRUE;
}
@ -364,11 +356,14 @@ get_app0 (j_decompress_ptr cinfo)
if (b[0]==0x4A && b[1]==0x46 && b[2]==0x49 && b[3]==0x46 && b[4]==0) {
/* Found JFIF APP0 marker: check version */
/* Major version must be 1 */
/* Major version must be 1, anything else signals an incompatible change.
* We used to treat this as an error, but now it's a nonfatal warning,
* because some bozo at Hijaak couldn't read the spec.
* Minor version should be 0..2, but process anyway if newer.
*/
if (b[5] != 1)
ERREXIT2(cinfo, JERR_JFIF_MAJOR, b[5], b[6]);
/* Minor version should be 0..2, but try to process anyway if newer */
if (b[6] > 2)
WARNMS2(cinfo, JWRN_JFIF_MAJOR, b[5], b[6]);
else if (b[6] > 2)
TRACEMS2(cinfo, 1, JTRC_JFIF_MINOR, b[5], b[6]);
/* Save info */
cinfo->saw_JFIF_marker = TRUE;
@ -724,9 +719,8 @@ first_marker (j_decompress_ptr cinfo)
/*
* Read markers until SOS or EOI.
*
* Returns same codes as are defined for jpeg_read_header,
* but HEADER_OK and HEADER_TABLES_ONLY merely indicate which marker type
* stopped the scan --- they do not necessarily mean the file is valid.
* Returns same codes as are defined for jpeg_consume_input:
* JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
*/
METHODDEF int
@ -757,25 +751,31 @@ read_markers (j_decompress_ptr cinfo)
case M_SOF0: /* Baseline */
case M_SOF1: /* Extended sequential, Huffman */
cinfo->arith_code = FALSE;
if (! get_sof(cinfo))
if (! get_sof(cinfo, FALSE, FALSE))
return JPEG_SUSPENDED;
break;
case M_SOF2: /* Progressive, Huffman */
if (! get_sof(cinfo, TRUE, FALSE))
return JPEG_SUSPENDED;
break;
case M_SOF9: /* Extended sequential, arithmetic */
cinfo->arith_code = TRUE;
if (! get_sof(cinfo))
if (! get_sof(cinfo, FALSE, TRUE))
return JPEG_SUSPENDED;
break;
case M_SOF10: /* Progressive, arithmetic */
if (! get_sof(cinfo, TRUE, TRUE))
return JPEG_SUSPENDED;
break;
/* Currently unsupported SOFn types */
case M_SOF2: /* Progressive, Huffman */
case M_SOF3: /* Lossless, Huffman */
case M_SOF5: /* Differential sequential, Huffman */
case M_SOF6: /* Differential progressive, Huffman */
case M_SOF7: /* Differential lossless, Huffman */
case M_JPG: /* Reserved for JPEG extensions */
case M_SOF10: /* Progressive, arithmetic */
case M_SOF11: /* Lossless, arithmetic */
case M_SOF13: /* Differential sequential, arithmetic */
case M_SOF14: /* Differential progressive, arithmetic */
@ -787,12 +787,12 @@ read_markers (j_decompress_ptr cinfo)
if (! get_sos(cinfo))
return JPEG_SUSPENDED;
cinfo->unread_marker = 0; /* processed the marker */
return JPEG_HEADER_OK; /* return value for SOS found */
return JPEG_REACHED_SOS;
case M_EOI:
TRACEMS(cinfo, 1, JTRC_EOI);
cinfo->unread_marker = 0; /* processed the marker */
return JPEG_HEADER_TABLES_ONLY; /* return value for EOI found */
return JPEG_REACHED_EOI;
case M_DAC:
if (! get_dac(cinfo))
@ -901,7 +901,8 @@ read_restart_marker (j_decompress_ptr cinfo)
} else {
/* Uh-oh, the restart markers have been messed up. */
/* Let the data source manager determine how to resync. */
if (! (*cinfo->src->resync_to_restart) (cinfo))
if (! (*cinfo->src->resync_to_restart) (cinfo,
cinfo->marker->next_restart_num))
return FALSE;
}
@ -923,7 +924,7 @@ read_restart_marker (j_decompress_ptr cinfo)
* the restart marker it was expecting. (This code is *not* used unless
* a nonzero restart interval has been declared.) cinfo->unread_marker is
* the marker code actually found (might be anything, except 0 or FF).
* The desired restart marker is indicated by cinfo->marker->next_restart_num.
* The desired restart marker number (0..7) is passed as a parameter.
* This routine is supposed to apply whatever error recovery strategy seems
* appropriate in order to position the input stream to the next data segment.
* Note that cinfo->unread_marker is treated as a marker appearing before
@ -962,10 +963,9 @@ read_restart_marker (j_decompress_ptr cinfo)
*/
GLOBAL boolean
jpeg_resync_to_restart (j_decompress_ptr cinfo)
jpeg_resync_to_restart (j_decompress_ptr cinfo, int desired)
{
int marker = cinfo->unread_marker;
int desired = cinfo->marker->next_restart_num;
int action = 1;
/* Always put up a warning. */
@ -1015,16 +1015,18 @@ jpeg_resync_to_restart (j_decompress_ptr cinfo)
METHODDEF void
reset_marker_reader (j_decompress_ptr cinfo)
{
cinfo->unread_marker = 0; /* no pending marker */
cinfo->marker->saw_SOI = FALSE; /* set internal state too */
cinfo->comp_info = NULL; /* until allocated by get_sof */
cinfo->input_scan_number = 0; /* no SOS seen yet */
cinfo->unread_marker = 0; /* no pending marker */
cinfo->marker->saw_SOI = FALSE; /* set internal state too */
cinfo->marker->saw_SOF = FALSE;
cinfo->marker->discarded_bytes = 0;
cinfo->comp_info = NULL; /* until allocated by get_sof */
}
/*
* Initialize the marker reader module.
* This is called only once, when the decompression object is created.
*/
GLOBAL void
@ -1033,11 +1035,9 @@ jinit_marker_reader (j_decompress_ptr cinfo)
int i;
/* Create subobject in permanent pool */
if (cinfo->marker == NULL) { /* first time for this JPEG object? */
cinfo->marker = (struct jpeg_marker_reader *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
SIZEOF(struct jpeg_marker_reader));
}
cinfo->marker = (struct jpeg_marker_reader *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
SIZEOF(struct jpeg_marker_reader));
/* Initialize method pointers */
cinfo->marker->reset_marker_reader = reset_marker_reader;
cinfo->marker->read_markers = read_markers;

508
jdmaster.c
View File

@ -18,24 +18,18 @@
/* Private state */
typedef enum {
main_pass, /* read and process a single-scan file */
preread_pass, /* read one scan of a multi-scan file */
output_pass, /* primary processing pass for multi-scan */
post_pass /* optional post-pass for 2-pass quant. */
} D_PASS_TYPE;
typedef struct {
struct jpeg_decomp_master pub; /* public fields */
int pass_number; /* # of passes completed */
boolean using_merged_upsample; /* TRUE if using merged upsample/cconvert */
D_PASS_TYPE pass_type; /* the type of the current pass */
int pass_number; /* # of passes completed */
int total_passes; /* estimated total # of passes needed */
boolean need_post_pass; /* are we using full two-pass quantization? */
/* Saved references to initialized quantizer modules,
* in case we need to switch modes.
*/
struct jpeg_color_quantizer * quantizer_1pass;
struct jpeg_color_quantizer * quantizer_2pass;
} my_decomp_master;
typedef my_decomp_master * my_master_ptr;
@ -72,8 +66,7 @@ use_merged_upsample (j_decompress_ptr cinfo)
cinfo->comp_info[2].DCT_scaled_size != cinfo->min_DCT_scaled_size)
return FALSE;
/* ??? also need to test for upsample-time rescaling, when & if supported */
/* by golly, it'll work... */
return TRUE;
return TRUE; /* by golly, it'll work... */
#else
return FALSE;
#endif
@ -81,10 +74,10 @@ use_merged_upsample (j_decompress_ptr cinfo)
/*
* Support routines that do various essential calculations.
*
* jpeg_calc_output_dimensions is exported for possible use by application.
* Compute output image dimensions and related values.
* NOTE: this is exported for possible use by application.
* Hence it mustn't do anything that can't be done twice.
* Also note that it may be called before the master module is initialized!
*/
GLOBAL void
@ -94,22 +87,13 @@ jpeg_calc_output_dimensions (j_decompress_ptr cinfo)
int ci;
jpeg_component_info *compptr;
/* Compute maximum sampling factors; check factor validity */
cinfo->max_h_samp_factor = 1;
cinfo->max_v_samp_factor = 1;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR ||
compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
ERREXIT(cinfo, JERR_BAD_SAMPLING);
cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,
compptr->h_samp_factor);
cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor,
compptr->v_samp_factor);
}
/* Prevent application from calling me at wrong times */
if (cinfo->global_state != DSTATE_READY)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
#ifdef IDCT_SCALING_SUPPORTED
/* Compute actual output image dimensions and DCT scaling choices. */
#ifdef IDCT_SCALING_SUPPORTED
if (cinfo->scale_num * 8 <= cinfo->scale_denom) {
/* Provide 1/8 scaling */
cinfo->output_width = (JDIMENSION)
@ -154,15 +138,32 @@ jpeg_calc_output_dimensions (j_decompress_ptr cinfo)
}
compptr->DCT_scaled_size = ssize;
}
/* Recompute downsampled dimensions of components;
* application needs to know these if using raw downsampled data.
*/
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Size in samples, after IDCT scaling */
compptr->downsampled_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width *
(long) (compptr->h_samp_factor * compptr->DCT_scaled_size),
(long) (cinfo->max_h_samp_factor * DCTSIZE));
compptr->downsampled_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height *
(long) (compptr->v_samp_factor * compptr->DCT_scaled_size),
(long) (cinfo->max_v_samp_factor * DCTSIZE));
}
#else /* !IDCT_SCALING_SUPPORTED */
/* Hardwire it to "no scaling" */
cinfo->output_width = cinfo->image_width;
cinfo->output_height = cinfo->image_height;
cinfo->min_DCT_scaled_size = DCTSIZE;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
compptr->DCT_scaled_size = DCTSIZE;
}
/* jdinput.c has already initialized DCT_scaled_size to DCTSIZE,
* and has computed unscaled downsampled_width and downsampled_height.
*/
#endif /* IDCT_SCALING_SUPPORTED */
/* Report number of components in selected colorspace. */
@ -195,119 +196,6 @@ jpeg_calc_output_dimensions (j_decompress_ptr cinfo)
cinfo->rec_outbuf_height = cinfo->max_v_samp_factor;
else
cinfo->rec_outbuf_height = 1;
/* Compute various sampling-related dimensions.
* Some of these are of interest to the application if it is dealing with
* "raw" (not upsampled) output, so we do the calculations here.
*/
/* Compute dimensions of components */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Size in DCT blocks */
compptr->width_in_blocks = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,
(long) (cinfo->max_h_samp_factor * DCTSIZE));
compptr->height_in_blocks = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
(long) (cinfo->max_v_samp_factor * DCTSIZE));
/* Size in samples, after IDCT scaling */
compptr->downsampled_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width *
(long) (compptr->h_samp_factor * compptr->DCT_scaled_size),
(long) (cinfo->max_h_samp_factor * DCTSIZE));
compptr->downsampled_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height *
(long) (compptr->v_samp_factor * compptr->DCT_scaled_size),
(long) (cinfo->max_v_samp_factor * DCTSIZE));
/* Mark component needed, until color conversion says otherwise */
compptr->component_needed = TRUE;
}
/* Compute number of fully interleaved MCU rows (number of times that
* main controller will call coefficient controller).
*/
cinfo->total_iMCU_rows = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height,
(long) (cinfo->max_v_samp_factor*DCTSIZE));
}
LOCAL void
per_scan_setup (j_decompress_ptr cinfo)
/* Do computations that are needed before processing a JPEG scan */
/* cinfo->comps_in_scan and cinfo->cur_comp_info[] were set from SOS marker */
{
int ci, mcublks, tmp;
jpeg_component_info *compptr;
if (cinfo->comps_in_scan == 1) {
/* Noninterleaved (single-component) scan */
compptr = cinfo->cur_comp_info[0];
/* Overall image size in MCUs */
cinfo->MCUs_per_row = compptr->width_in_blocks;
cinfo->MCU_rows_in_scan = compptr->height_in_blocks;
/* For noninterleaved scan, always one block per MCU */
compptr->MCU_width = 1;
compptr->MCU_height = 1;
compptr->MCU_blocks = 1;
compptr->MCU_sample_width = compptr->DCT_scaled_size;
compptr->last_col_width = 1;
/* For noninterleaved scans, it is convenient to define last_row_height
* as the number of block rows present in the last iMCU row.
*/
tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
if (tmp == 0) tmp = compptr->v_samp_factor;
compptr->last_row_height = tmp;
/* Prepare array describing MCU composition */
cinfo->blocks_in_MCU = 1;
cinfo->MCU_membership[0] = 0;
} else {
/* Interleaved (multi-component) scan */
if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan,
MAX_COMPS_IN_SCAN);
/* Overall image size in MCUs */
cinfo->MCUs_per_row = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width,
(long) (cinfo->max_h_samp_factor*DCTSIZE));
cinfo->MCU_rows_in_scan = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height,
(long) (cinfo->max_v_samp_factor*DCTSIZE));
cinfo->blocks_in_MCU = 0;
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
/* Sampling factors give # of blocks of component in each MCU */
compptr->MCU_width = compptr->h_samp_factor;
compptr->MCU_height = compptr->v_samp_factor;
compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height;
compptr->MCU_sample_width = compptr->MCU_width * compptr->DCT_scaled_size;
/* Figure number of non-dummy blocks in last MCU column & row */
tmp = (int) (compptr->width_in_blocks % compptr->MCU_width);
if (tmp == 0) tmp = compptr->MCU_width;
compptr->last_col_width = tmp;
tmp = (int) (compptr->height_in_blocks % compptr->MCU_height);
if (tmp == 0) tmp = compptr->MCU_height;
compptr->last_row_height = tmp;
/* Prepare array describing MCU composition */
mcublks = compptr->MCU_blocks;
if (cinfo->blocks_in_MCU + mcublks > MAX_BLOCKS_IN_MCU)
ERREXIT(cinfo, JERR_BAD_MCU_SIZE);
while (mcublks-- > 0) {
cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;
}
}
}
}
@ -385,17 +273,20 @@ prepare_range_limit_table (j_decompress_ptr cinfo)
/*
* Master selection of decompression modules.
* This is done once at the start of processing an image. We determine
* This is done once at jpeg_start_decompress time. We determine
* which modules will be used and give them appropriate initialization calls.
* We also initialize the decompressor input side to begin consuming data.
*
* Note that this is called only after jpeg_read_header has finished.
* We therefore know what is in the SOF and (first) SOS markers.
* Since jpeg_read_header has finished, we know what is in the SOF
* and (first) SOS markers. We also have all the application parameter
* settings.
*/
LOCAL void
master_selection (j_decompress_ptr cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
boolean use_c_buffer;
long samplesperrow;
JDIMENSION jd_samplesperrow;
@ -410,62 +301,56 @@ master_selection (j_decompress_ptr cinfo)
ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
/* Initialize my private state */
master->pub.eoi_processed = FALSE;
master->pass_number = 0;
master->need_post_pass = FALSE;
if (cinfo->comps_in_scan == cinfo->num_components) {
master->pass_type = main_pass;
master->total_passes = 1;
} else {
#ifdef D_MULTISCAN_FILES_SUPPORTED
master->pass_type = preread_pass;
/* Assume there is a separate scan for each component; */
/* if partially interleaved, we'll increment pass_number appropriately */
master->total_passes = cinfo->num_components + 1;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
}
master->using_merged_upsample = use_merged_upsample(cinfo);
/* There's not a lot of smarts here right now, but it'll get more
* complicated when we have multiple implementations available...
*/
/* Color quantizer selection */
master->quantizer_1pass = NULL;
master->quantizer_2pass = NULL;
/* No mode changes if not using buffered-image mode. */
if (! cinfo->quantize_colors || ! cinfo->buffered_image) {
cinfo->enable_1pass_quant = FALSE;
cinfo->enable_external_quant = FALSE;
cinfo->enable_2pass_quant = FALSE;
}
if (cinfo->quantize_colors) {
if (cinfo->raw_data_out)
ERREXIT(cinfo, JERR_NOTIMPL);
#ifdef QUANT_2PASS_SUPPORTED
/* 2-pass quantizer only works in 3-component color space.
* We use the "2-pass" code in a single pass if a colormap is given.
*/
if (cinfo->out_color_components != 3)
cinfo->two_pass_quantize = FALSE;
else if (cinfo->colormap != NULL)
cinfo->two_pass_quantize = TRUE;
#else
/* Force 1-pass quantize if we don't have 2-pass code compiled. */
cinfo->two_pass_quantize = FALSE;
#endif
if (cinfo->two_pass_quantize) {
#ifdef QUANT_2PASS_SUPPORTED
if (cinfo->colormap == NULL) {
master->need_post_pass = TRUE;
master->total_passes++;
}
jinit_2pass_quantizer(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
/* 2-pass quantizer only works in 3-component color space. */
if (cinfo->out_color_components != 3) {
cinfo->enable_1pass_quant = TRUE;
cinfo->enable_external_quant = FALSE;
cinfo->enable_2pass_quant = FALSE;
cinfo->colormap = NULL;
} else if (cinfo->colormap != NULL) {
cinfo->enable_external_quant = TRUE;
} else if (cinfo->two_pass_quantize) {
cinfo->enable_2pass_quant = TRUE;
} else {
cinfo->enable_1pass_quant = TRUE;
}
if (cinfo->enable_1pass_quant) {
#ifdef QUANT_1PASS_SUPPORTED
jinit_1pass_quantizer(cinfo);
master->quantizer_1pass = cinfo->cquantize;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
}
/* We use the 2-pass code to map to external colormaps. */
if (cinfo->enable_2pass_quant || cinfo->enable_external_quant) {
#ifdef QUANT_2PASS_SUPPORTED
jinit_2pass_quantizer(cinfo);
master->quantizer_2pass = cinfo->cquantize;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
}
/* If both quantizers are initialized, the 2-pass one is left active;
* this is necessary for starting with quantization to an external map.
*/
}
/* Post-processing: in particular, color conversion first */
@ -480,161 +365,176 @@ master_selection (j_decompress_ptr cinfo)
jinit_color_deconverter(cinfo);
jinit_upsampler(cinfo);
}
jinit_d_post_controller(cinfo, master->need_post_pass);
jinit_d_post_controller(cinfo, cinfo->enable_2pass_quant);
}
/* Inverse DCT */
jinit_inverse_dct(cinfo);
/* Entropy decoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code) {
#ifdef D_ARITH_CODING_SUPPORTED
jinit_arith_decoder(cinfo);
#else
ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
} else {
if (cinfo->progressive_mode) {
#ifdef D_PROGRESSIVE_SUPPORTED
jinit_phuff_decoder(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else
jinit_huff_decoder(cinfo);
} else
jinit_huff_decoder(cinfo);
}
jinit_d_coef_controller(cinfo, (master->pass_type == preread_pass));
jinit_d_main_controller(cinfo, FALSE /* never need full buffer here */);
/* Note that main controller is initialized even in raw-data mode. */
/* Initialize principal buffer controllers. */
use_c_buffer = cinfo->inputctl->has_multiple_scans || cinfo->buffered_image;
jinit_d_coef_controller(cinfo, use_c_buffer);
if (! cinfo->raw_data_out)
jinit_d_main_controller(cinfo, FALSE /* never need full buffer here */);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
/* Initialize input side of decompressor to consume first scan. */
(*cinfo->inputctl->start_input_pass) (cinfo);
#ifdef D_MULTISCAN_FILES_SUPPORTED
/* If jpeg_start_decompress will read the whole file, initialize
* progress monitoring appropriately. The input step is counted
* as one pass.
*/
if (cinfo->progress != NULL && ! cinfo->buffered_image &&
cinfo->inputctl->has_multiple_scans) {
int nscans;
/* Estimate number of scans to set pass_limit. */
if (cinfo->progressive_mode) {
/* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */
nscans = 2 + 3 * cinfo->num_components;
} else {
/* For a nonprogressive multiscan file, estimate 1 scan per component. */
nscans = cinfo->num_components;
}
cinfo->progress->pass_counter = 0L;
cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;
cinfo->progress->completed_passes = 0;
cinfo->progress->total_passes = (cinfo->enable_2pass_quant ? 3 : 2);
/* Count the input pass as done */
master->pass_number++;
}
#endif /* D_MULTISCAN_FILES_SUPPORTED */
}
/*
* Per-pass setup.
* This is called at the beginning of each pass. We determine which modules
* will be active during this pass and give them appropriate start_pass calls.
* We also set is_last_pass to indicate whether any more passes will be
* required.
* This is called at the beginning of each output pass. We determine which
* modules will be active during this pass and give them appropriate
* start_pass calls. We also set is_dummy_pass to indicate whether this
* is a "real" output pass or a dummy pass for color quantization.
* (In the latter case, jdapi.c will crank the pass to completion.)
*/
METHODDEF void
prepare_for_pass (j_decompress_ptr cinfo)
prepare_for_output_pass (j_decompress_ptr cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
switch (master->pass_type) {
case main_pass:
/* Set up to read and decompress single-scan file in one pass */
per_scan_setup(cinfo);
master->pub.is_last_pass = ! master->need_post_pass;
if (! cinfo->raw_data_out) {
if (! master->using_merged_upsample)
(*cinfo->cconvert->start_pass) (cinfo);
(*cinfo->upsample->start_pass) (cinfo);
if (cinfo->quantize_colors)
(*cinfo->cquantize->start_pass) (cinfo, master->need_post_pass);
(*cinfo->post->start_pass) (cinfo,
(master->need_post_pass ? JBUF_SAVE_AND_PASS : JBUF_PASS_THRU));
}
(*cinfo->idct->start_input_pass) (cinfo);
(*cinfo->idct->start_output_pass) (cinfo);
(*cinfo->entropy->start_pass) (cinfo);
(*cinfo->coef->start_pass) (cinfo, JBUF_PASS_THRU);
(*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);
break;
#ifdef D_MULTISCAN_FILES_SUPPORTED
case preread_pass:
/* Read (another) scan of a multi-scan file */
per_scan_setup(cinfo);
master->pub.is_last_pass = FALSE;
(*cinfo->idct->start_input_pass) (cinfo);
(*cinfo->entropy->start_pass) (cinfo);
(*cinfo->coef->start_pass) (cinfo, JBUF_SAVE_SOURCE);
(*cinfo->main->start_pass) (cinfo, JBUF_CRANK_SOURCE);
break;
case output_pass:
/* All scans read, now do the IDCT and subsequent processing */
master->pub.is_last_pass = ! master->need_post_pass;
if (! cinfo->raw_data_out) {
if (! master->using_merged_upsample)
(*cinfo->cconvert->start_pass) (cinfo);
(*cinfo->upsample->start_pass) (cinfo);
if (cinfo->quantize_colors)
(*cinfo->cquantize->start_pass) (cinfo, master->need_post_pass);
(*cinfo->post->start_pass) (cinfo,
(master->need_post_pass ? JBUF_SAVE_AND_PASS : JBUF_PASS_THRU));
}
(*cinfo->idct->start_output_pass) (cinfo);
(*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST);
(*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);
break;
#endif /* D_MULTISCAN_FILES_SUPPORTED */
if (master->pub.is_dummy_pass) {
#ifdef QUANT_2PASS_SUPPORTED
case post_pass:
/* Final pass of 2-pass quantization */
master->pub.is_last_pass = TRUE;
master->pub.is_dummy_pass = FALSE;
(*cinfo->cquantize->start_pass) (cinfo, FALSE);
(*cinfo->post->start_pass) (cinfo, JBUF_CRANK_DEST);
(*cinfo->main->start_pass) (cinfo, JBUF_CRANK_DEST);
break;
#endif /* QUANT_2PASS_SUPPORTED */
default:
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif /* QUANT_2PASS_SUPPORTED */
} else {
if (cinfo->quantize_colors && cinfo->colormap == NULL) {
/* Select new quantization method */
if (cinfo->two_pass_quantize && cinfo->enable_2pass_quant) {
cinfo->cquantize = master->quantizer_2pass;
master->pub.is_dummy_pass = TRUE;
} else if (cinfo->enable_1pass_quant) {
cinfo->cquantize = master->quantizer_1pass;
} else {
ERREXIT(cinfo, JERR_MODE_CHANGE);
}
}
(*cinfo->idct->start_pass) (cinfo);
(*cinfo->coef->start_output_pass) (cinfo);
if (! cinfo->raw_data_out) {
if (! master->using_merged_upsample)
(*cinfo->cconvert->start_pass) (cinfo);
(*cinfo->upsample->start_pass) (cinfo);
if (cinfo->quantize_colors)
(*cinfo->cquantize->start_pass) (cinfo, master->pub.is_dummy_pass);
(*cinfo->post->start_pass) (cinfo,
(master->pub.is_dummy_pass ? JBUF_SAVE_AND_PASS : JBUF_PASS_THRU));
(*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);
}
}
/* Set up progress monitor's pass info if present */
if (cinfo->progress != NULL) {
cinfo->progress->completed_passes = master->pass_number;
cinfo->progress->total_passes = master->total_passes;
cinfo->progress->total_passes = master->pass_number +
(master->pub.is_dummy_pass ? 2 : 1);
/* In buffered-image mode, we assume one more output pass if EOI not
* yet reached, but no more passes if EOI has been reached.
*/
if (cinfo->buffered_image && ! cinfo->inputctl->eoi_reached) {
cinfo->progress->total_passes += (cinfo->enable_2pass_quant ? 2 : 1);
}
}
}
/*
* Finish up at end of pass.
* In multi-scan mode, we must read next scan header and set the next
* pass_type correctly for prepare_for_pass.
* Finish up at end of an output pass.
*/
METHODDEF void
finish_pass_master (j_decompress_ptr cinfo)
finish_output_pass (j_decompress_ptr cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
switch (master->pass_type) {
case main_pass:
case output_pass:
if (cinfo->quantize_colors)
(*cinfo->cquantize->finish_pass) (cinfo);
master->pass_number++;
master->pass_type = post_pass; /* in case need_post_pass is true */
break;
#ifdef D_MULTISCAN_FILES_SUPPORTED
case preread_pass:
/* Count one pass done for each component in this scan */
master->pass_number += cinfo->comps_in_scan;
switch ((*cinfo->marker->read_markers) (cinfo)) {
case JPEG_HEADER_OK: /* Found SOS, do another preread pass */
break;
case JPEG_HEADER_TABLES_ONLY: /* Found EOI, no more preread passes */
master->pub.eoi_processed = TRUE;
master->pass_type = output_pass;
break;
case JPEG_SUSPENDED:
ERREXIT(cinfo, JERR_CANT_SUSPEND);
}
break;
#endif /* D_MULTISCAN_FILES_SUPPORTED */
#ifdef QUANT_2PASS_SUPPORTED
case post_pass:
if (cinfo->quantize_colors)
(*cinfo->cquantize->finish_pass) (cinfo);
/* there will be no more passes, don't bother to change state */
break;
#endif /* QUANT_2PASS_SUPPORTED */
default:
ERREXIT(cinfo, JERR_NOT_COMPILED);
}
master->pass_number++;
}
#ifdef D_MULTISCAN_FILES_SUPPORTED
/*
* Initialize master decompression control.
* This creates my own subrecord and also performs the master selection phase,
* which causes other modules to create their subrecords.
* Switch to a new external colormap between output passes.
*/
GLOBAL void
jpeg_new_colormap (j_decompress_ptr cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
/* Prevent application from calling me at wrong times */
if (cinfo->global_state != DSTATE_BUFIMAGE)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->quantize_colors && cinfo->enable_external_quant &&
cinfo->colormap != NULL) {
/* Select 2-pass quantizer for external colormap use */
cinfo->cquantize = master->quantizer_2pass;
/* Notify quantizer of colormap change */
(*cinfo->cquantize->new_color_map) (cinfo);
master->pub.is_dummy_pass = FALSE; /* just in case */
} else
ERREXIT(cinfo, JERR_MODE_CHANGE);
}
#endif /* D_MULTISCAN_FILES_SUPPORTED */
/*
* Initialize master decompression control and select active modules.
* This is performed at the start of jpeg_start_decompress.
*/
GLOBAL void
@ -646,8 +546,10 @@ jinit_master_decompress (j_decompress_ptr cinfo)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_decomp_master));
cinfo->master = (struct jpeg_decomp_master *) master;
master->pub.prepare_for_pass = prepare_for_pass;
master->pub.finish_pass = finish_pass_master;
master->pub.prepare_for_output_pass = prepare_for_output_pass;
master->pub.finish_output_pass = finish_output_pass;
master->pub.is_dummy_pass = FALSE;
master_selection(cinfo);
}

38
jdmerge.c
View File

@ -1,7 +1,7 @@
/*
* jdmerge.c
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -75,24 +75,18 @@ typedef my_upsampler * my_upsample_ptr;
/*
* Initialize for an upsampling pass.
* Initialize tables for YCC->RGB colorspace conversion.
* This is taken directly from jdcolor.c; see that file for more info.
*/
METHODDEF void
start_pass_merged_upsample (j_decompress_ptr cinfo)
LOCAL void
build_ycc_rgb_table (j_decompress_ptr cinfo)
{
my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
INT32 i, x;
int i;
INT32 x;
SHIFT_TEMPS
/* Mark the spare buffer empty */
upsample->spare_full = FALSE;
/* Initialize total-height counter for detecting bottom of image */
upsample->rows_to_go = cinfo->output_height;
/* Initialize the YCC=>RGB conversion tables.
* This is taken directly from jdcolor.c; see that file for more info.
*/
upsample->Cr_r_tab = (int *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
(MAXJSAMPLE+1) * SIZEOF(int));
@ -124,6 +118,22 @@ start_pass_merged_upsample (j_decompress_ptr cinfo)
}
/*
* Initialize for an upsampling pass.
*/
METHODDEF void
start_pass_merged_upsample (j_decompress_ptr cinfo)
{
my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
/* Mark the spare buffer empty */
upsample->spare_full = FALSE;
/* Initialize total-height counter for detecting bottom of image */
upsample->rows_to_go = cinfo->output_height;
}
/*
* Control routine to do upsampling (and color conversion).
*
@ -383,6 +393,8 @@ jinit_merged_upsampler (j_decompress_ptr cinfo)
/* No spare row needed */
upsample->spare_row = NULL;
}
build_ycc_rgb_table(cinfo);
}
#endif /* UPSAMPLE_MERGING_SUPPORTED */

642
jdphuff.c Normal file
View File

@ -0,0 +1,642 @@
/*
* jdphuff.c
*
* Copyright (C) 1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains Huffman entropy decoding routines for progressive JPEG.
*
* Much of the complexity here has to do with supporting input suspension.
* If the data source module demands suspension, we want to be able to back
* up to the start of the current MCU. To do this, we copy state variables
* into local working storage, and update them back to the permanent
* storage only upon successful completion of an MCU.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
#include "jdhuff.h" /* Declarations shared with jdhuff.c */
#ifdef D_PROGRESSIVE_SUPPORTED
/*
* Expanded entropy decoder object for progressive Huffman decoding.
*
* The savable_state subrecord contains fields that change within an MCU,
* but must not be updated permanently until we complete the MCU.
*/
typedef struct {
unsigned int EOBRUN; /* remaining EOBs in EOBRUN */
int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */
} savable_state;
/* This macro is to work around compilers with missing or broken
* structure assignment. You'll need to fix this code if you have
* such a compiler and you change MAX_COMPS_IN_SCAN.
*/
#ifndef NO_STRUCT_ASSIGN
#define ASSIGN_STATE(dest,src) ((dest) = (src))
#else
#if MAX_COMPS_IN_SCAN == 4
#define ASSIGN_STATE(dest,src) \
((dest).EOBRUN = (src).EOBRUN, \
(dest).last_dc_val[0] = (src).last_dc_val[0], \
(dest).last_dc_val[1] = (src).last_dc_val[1], \
(dest).last_dc_val[2] = (src).last_dc_val[2], \
(dest).last_dc_val[3] = (src).last_dc_val[3])
#endif
#endif
typedef struct {
struct jpeg_entropy_decoder pub; /* public fields */
/* These fields are loaded into local variables at start of each MCU.
* In case of suspension, we exit WITHOUT updating them.
*/
bitread_perm_state bitstate; /* Bit buffer at start of MCU */
savable_state saved; /* Other state at start of MCU */
/* These fields are NOT loaded into local working state. */
unsigned int restarts_to_go; /* MCUs left in this restart interval */
/* Pointers to derived tables (these workspaces have image lifespan) */
d_derived_tbl * derived_tbls[NUM_HUFF_TBLS];
d_derived_tbl * ac_derived_tbl; /* active table during an AC scan */
} phuff_entropy_decoder;
typedef phuff_entropy_decoder * phuff_entropy_ptr;
/* Forward declarations */
METHODDEF boolean decode_mcu_DC_first JPP((j_decompress_ptr cinfo,
JBLOCKROW *MCU_data));
METHODDEF boolean decode_mcu_AC_first JPP((j_decompress_ptr cinfo,
JBLOCKROW *MCU_data));
METHODDEF boolean decode_mcu_DC_refine JPP((j_decompress_ptr cinfo,
JBLOCKROW *MCU_data));
METHODDEF boolean decode_mcu_AC_refine JPP((j_decompress_ptr cinfo,
JBLOCKROW *MCU_data));
/*
* Initialize for a Huffman-compressed scan.
*/
METHODDEF void
start_pass_phuff_decoder (j_decompress_ptr cinfo)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
boolean is_DC_band, bad;
int ci, coefi, tbl;
int *coef_bit_ptr;
jpeg_component_info * compptr;
is_DC_band = (cinfo->Ss == 0);
/* Validate scan parameters */
bad = FALSE;
if (is_DC_band) {
if (cinfo->Se != 0)
bad = TRUE;
} else {
/* need not check Ss/Se < 0 since they came from unsigned bytes */
if (cinfo->Ss > cinfo->Se || cinfo->Se >= DCTSIZE2)
bad = TRUE;
/* AC scans may have only one component */
if (cinfo->comps_in_scan != 1)
bad = TRUE;
}
if (cinfo->Ah != 0) {
/* Successive approximation refinement scan: must have Al = Ah-1. */
if (cinfo->Al != cinfo->Ah-1)
bad = TRUE;
}
if (cinfo->Al > 13) /* need not check for < 0 */
bad = TRUE;
if (bad)
ERREXIT4(cinfo, JERR_BAD_PROGRESSION,
cinfo->Ss, cinfo->Se, cinfo->Ah, cinfo->Al);
/* Update progression status, and verify that scan order is legal.
* Note that inter-scan inconsistencies are treated as warnings
* not fatal errors ... not clear if this is right way to behave.
*/
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
int cindex = cinfo->cur_comp_info[ci]->component_index;
coef_bit_ptr = & cinfo->coef_bits[cindex][0];
if (!is_DC_band && coef_bit_ptr[0] < 0) /* AC without prior DC scan */
WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, 0);
for (coefi = cinfo->Ss; coefi <= cinfo->Se; coefi++) {
int expected = (coef_bit_ptr[coefi] < 0) ? 0 : coef_bit_ptr[coefi];
if (cinfo->Ah != expected)
WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, coefi);
coef_bit_ptr[coefi] = cinfo->Al;
}
}
/* Select MCU decoding routine */
if (cinfo->Ah == 0) {
if (is_DC_band)
entropy->pub.decode_mcu = decode_mcu_DC_first;
else
entropy->pub.decode_mcu = decode_mcu_AC_first;
} else {
if (is_DC_band)
entropy->pub.decode_mcu = decode_mcu_DC_refine;
else
entropy->pub.decode_mcu = decode_mcu_AC_refine;
}
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
/* Make sure requested tables are present, and compute derived tables.
* We may build same derived table more than once, but it's not expensive.
*/
if (is_DC_band) {
if (cinfo->Ah == 0) { /* DC refinement needs no table */
tbl = compptr->dc_tbl_no;
if (tbl < 0 || tbl >= NUM_HUFF_TBLS ||
cinfo->dc_huff_tbl_ptrs[tbl] == NULL)
ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tbl);
jpeg_make_d_derived_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[tbl],
& entropy->derived_tbls[tbl]);
}
} else {
tbl = compptr->ac_tbl_no;
if (tbl < 0 || tbl >= NUM_HUFF_TBLS ||
cinfo->ac_huff_tbl_ptrs[tbl] == NULL)
ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tbl);
jpeg_make_d_derived_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[tbl],
& entropy->derived_tbls[tbl]);
/* remember the single active table */
entropy->ac_derived_tbl = entropy->derived_tbls[tbl];
}
/* Initialize DC predictions to 0 */
entropy->saved.last_dc_val[ci] = 0;
}
/* Initialize bitread state variables */
entropy->bitstate.bits_left = 0;
entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */
entropy->bitstate.printed_eod = FALSE;
/* Initialize private state variables */
entropy->saved.EOBRUN = 0;
/* Initialize restart counter */
entropy->restarts_to_go = cinfo->restart_interval;
}
/*
* Figure F.12: extend sign bit.
* On some machines, a shift and add will be faster than a table lookup.
*/
#ifdef AVOID_TABLES
#define HUFF_EXTEND(x,s) ((x) < (1<<((s)-1)) ? (x) + (((-1)<<(s)) + 1) : (x))
#else
#define HUFF_EXTEND(x,s) ((x) < extend_test[s] ? (x) + extend_offset[s] : (x))
static const int extend_test[16] = /* entry n is 2**(n-1) */
{ 0, 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000 };
static const int extend_offset[16] = /* entry n is (-1 << n) + 1 */
{ 0, ((-1)<<1) + 1, ((-1)<<2) + 1, ((-1)<<3) + 1, ((-1)<<4) + 1,
((-1)<<5) + 1, ((-1)<<6) + 1, ((-1)<<7) + 1, ((-1)<<8) + 1,
((-1)<<9) + 1, ((-1)<<10) + 1, ((-1)<<11) + 1, ((-1)<<12) + 1,
((-1)<<13) + 1, ((-1)<<14) + 1, ((-1)<<15) + 1 };
#endif /* AVOID_TABLES */
/*
* Check for a restart marker & resynchronize decoder.
* Returns FALSE if must suspend.
*/
LOCAL boolean
process_restart (j_decompress_ptr cinfo)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
int ci;
/* Throw away any unused bits remaining in bit buffer; */
/* include any full bytes in next_marker's count of discarded bytes */
cinfo->marker->discarded_bytes += entropy->bitstate.bits_left / 8;
entropy->bitstate.bits_left = 0;
/* Advance past the RSTn marker */
if (! (*cinfo->marker->read_restart_marker) (cinfo))
return FALSE;
/* Re-initialize DC predictions to 0 */
for (ci = 0; ci < cinfo->comps_in_scan; ci++)
entropy->saved.last_dc_val[ci] = 0;
/* Re-init EOB run count, too */
entropy->saved.EOBRUN = 0;
/* Reset restart counter */
entropy->restarts_to_go = cinfo->restart_interval;
/* Next segment can get another out-of-data warning */
entropy->bitstate.printed_eod = FALSE;
return TRUE;
}
/*
* Huffman MCU decoding.
* Each of these routines decodes and returns one MCU's worth of
* Huffman-compressed coefficients.
* The coefficients are reordered from zigzag order into natural array order,
* but are not dequantized.
*
* The i'th block of the MCU is stored into the block pointed to by
* MCU_data[i]. WE ASSUME THIS AREA IS INITIALLY ZEROED BY THE CALLER.
*
* We return FALSE if data source requested suspension. In that case no
* changes have been made to permanent state. (Exception: some output
* coefficients may already have been assigned. This is harmless for
* spectral selection, since we'll just re-assign them on the next call.
* Successive approximation AC refinement has to be more careful, however.)
*/
/*
* MCU decoding for DC initial scan (either spectral selection,
* or first pass of successive approximation).
*/
METHODDEF boolean
decode_mcu_DC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
int Al = cinfo->Al;
register int s, r;
int blkn, ci;
JBLOCKROW block;
BITREAD_STATE_VARS;
savable_state state;
d_derived_tbl * tbl;
jpeg_component_info * compptr;
/* Process restart marker if needed; may have to suspend */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0)
if (! process_restart(cinfo))
return FALSE;
}
/* Load up working state */
BITREAD_LOAD_STATE(cinfo,entropy->bitstate);
ASSIGN_STATE(state, entropy->saved);
/* Outer loop handles each block in the MCU */
for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
block = MCU_data[blkn];
ci = cinfo->MCU_membership[blkn];
compptr = cinfo->cur_comp_info[ci];
tbl = entropy->derived_tbls[compptr->dc_tbl_no];
/* Decode a single block's worth of coefficients */
/* Section F.2.2.1: decode the DC coefficient difference */
HUFF_DECODE(s, br_state, tbl, return FALSE, label1);
if (s) {
CHECK_BIT_BUFFER(br_state, s, return FALSE);
r = GET_BITS(s);
s = HUFF_EXTEND(r, s);
}
/* Convert DC difference to actual value, update last_dc_val */
s += state.last_dc_val[ci];
state.last_dc_val[ci] = s;
/* Scale and output the DC coefficient (assumes jpeg_natural_order[0]=0) */
(*block)[0] = (JCOEF) (s << Al);
}
/* Completed MCU, so update state */
BITREAD_SAVE_STATE(cinfo,entropy->bitstate);
ASSIGN_STATE(entropy->saved, state);
/* Account for restart interval (no-op if not using restarts) */
entropy->restarts_to_go--;
return TRUE;
}
/*
* MCU decoding for AC initial scan (either spectral selection,
* or first pass of successive approximation).
*/
METHODDEF boolean
decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
int Se = cinfo->Se;
int Al = cinfo->Al;
register int s, k, r;
unsigned int EOBRUN;
JBLOCKROW block;
BITREAD_STATE_VARS;
d_derived_tbl * tbl;
/* Process restart marker if needed; may have to suspend */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0)
if (! process_restart(cinfo))
return FALSE;
}
/* Load up working state.
* We can avoid loading/saving bitread state if in an EOB run.
*/
EOBRUN = entropy->saved.EOBRUN; /* only part of saved state we care about */
/* There is always only one block per MCU */
if (EOBRUN > 0) /* if it's a band of zeroes... */
EOBRUN--; /* ...process it now (we do nothing) */
else {
BITREAD_LOAD_STATE(cinfo,entropy->bitstate);
block = MCU_data[0];
tbl = entropy->ac_derived_tbl;
for (k = cinfo->Ss; k <= Se; k++) {
HUFF_DECODE(s, br_state, tbl, return FALSE, label2);
r = s >> 4;
s &= 15;
if (s) {
k += r;
CHECK_BIT_BUFFER(br_state, s, return FALSE);
r = GET_BITS(s);
s = HUFF_EXTEND(r, s);
/* Scale and output coefficient in natural (dezigzagged) order */
(*block)[jpeg_natural_order[k]] = (JCOEF) (s << Al);
} else {
if (r == 15) { /* ZRL */
k += 15; /* skip 15 zeroes in band */
} else { /* EOBr, run length is 2^r + appended bits */
EOBRUN = 1 << r;
if (r) { /* EOBr, r > 0 */
CHECK_BIT_BUFFER(br_state, r, return FALSE);
r = GET_BITS(r);
EOBRUN += r;
}
EOBRUN--; /* this band is processed at this moment */
break; /* force end-of-band */
}
}
}
BITREAD_SAVE_STATE(cinfo,entropy->bitstate);
}
/* Completed MCU, so update state */
entropy->saved.EOBRUN = EOBRUN; /* only part of saved state we care about */
/* Account for restart interval (no-op if not using restarts) */
entropy->restarts_to_go--;
return TRUE;
}
/*
* MCU decoding for DC successive approximation refinement scan.
* Note: we assume such scans can be multi-component, although the spec
* is not very clear on the point.
*/
METHODDEF boolean
decode_mcu_DC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
int p1 = 1 << cinfo->Al; /* 1 in the bit position being coded */
int blkn;
JBLOCKROW block;
BITREAD_STATE_VARS;
/* Process restart marker if needed; may have to suspend */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0)
if (! process_restart(cinfo))
return FALSE;
}
/* Load up working state */
BITREAD_LOAD_STATE(cinfo,entropy->bitstate);
/* Outer loop handles each block in the MCU */
for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
block = MCU_data[blkn];
/* Encoded data is simply the next bit of the two's-complement DC value */
CHECK_BIT_BUFFER(br_state, 1, return FALSE);
if (GET_BITS(1))
(*block)[0] |= p1;
/* Note: since we use |=, repeating the assignment later is safe */
}
/* Completed MCU, so update state */
BITREAD_SAVE_STATE(cinfo,entropy->bitstate);
/* Account for restart interval (no-op if not using restarts) */
entropy->restarts_to_go--;
return TRUE;
}
/*
* MCU decoding for AC successive approximation refinement scan.
*/
METHODDEF boolean
decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
{
phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
int Se = cinfo->Se;
int p1 = 1 << cinfo->Al; /* 1 in the bit position being coded */
int m1 = (-1) << cinfo->Al; /* -1 in the bit position being coded */
register int s, k, r;
unsigned int EOBRUN;
JBLOCKROW block;
JCOEFPTR thiscoef;
BITREAD_STATE_VARS;
d_derived_tbl * tbl;
int num_newnz;
int newnz_pos[DCTSIZE2];
/* Process restart marker if needed; may have to suspend */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0)
if (! process_restart(cinfo))
return FALSE;
}
/* Load up working state */
BITREAD_LOAD_STATE(cinfo,entropy->bitstate);
EOBRUN = entropy->saved.EOBRUN; /* only part of saved state we care about */
/* There is always only one block per MCU */
block = MCU_data[0];
tbl = entropy->ac_derived_tbl;
/* If we are forced to suspend, we must undo the assignments to any newly
* nonzero coefficients in the block, because otherwise we'd get confused
* next time about which coefficients were already nonzero.
* But we need not undo addition of bits to already-nonzero coefficients;
* instead, we can test the current bit position to see if we already did it.
*/
num_newnz = 0;
/* initialize coefficient loop counter to start of band */
k = cinfo->Ss;
if (EOBRUN == 0) {
for (; k <= Se; k++) {
HUFF_DECODE(s, br_state, tbl, goto undoit, label3);
r = s >> 4;
s &= 15;
if (s) {
if (s != 1) /* size of new coef should always be 1 */
WARNMS(cinfo, JWRN_HUFF_BAD_CODE);
CHECK_BIT_BUFFER(br_state, 1, goto undoit);
if (GET_BITS(1))
s = p1; /* newly nonzero coef is positive */
else
s = m1; /* newly nonzero coef is negative */
} else {
if (r != 15) {
EOBRUN = 1 << r; /* EOBr, run length is 2^r + appended bits */
if (r) {
CHECK_BIT_BUFFER(br_state, r, goto undoit);
r = GET_BITS(r);
EOBRUN += r;
}
break; /* rest of block is handled by EOB logic */
}
/* note s = 0 for processing ZRL */
}
/* Advance over already-nonzero coefs and r still-zero coefs,
* appending correction bits to the nonzeroes. A correction bit is 1
* if the absolute value of the coefficient must be increased.
*/
do {
thiscoef = *block + jpeg_natural_order[k];
if (*thiscoef != 0) {
CHECK_BIT_BUFFER(br_state, 1, goto undoit);
if (GET_BITS(1)) {
if ((*thiscoef & p1) == 0) { /* do nothing if already changed it */
if (*thiscoef >= 0)
*thiscoef += p1;
else
*thiscoef += m1;
}
}
} else {
if (--r < 0)
break; /* reached target zero coefficient */
}
k++;
} while (k <= Se);
if (s) {
int pos = jpeg_natural_order[k];
/* Output newly nonzero coefficient */
(*block)[pos] = (JCOEF) s;
/* Remember its position in case we have to suspend */
newnz_pos[num_newnz++] = pos;
}
}
}
if (EOBRUN > 0) {
/* Scan any remaining coefficient positions after the end-of-band
* (the last newly nonzero coefficient, if any). Append a correction
* bit to each already-nonzero coefficient. A correction bit is 1
* if the absolute value of the coefficient must be increased.
*/
for (; k <= Se; k++) {
thiscoef = *block + jpeg_natural_order[k];
if (*thiscoef != 0) {
CHECK_BIT_BUFFER(br_state, 1, goto undoit);
if (GET_BITS(1)) {
if ((*thiscoef & p1) == 0) { /* do nothing if already changed it */
if (*thiscoef >= 0)
*thiscoef += p1;
else
*thiscoef += m1;
}
}
}
}
/* Count one block completed in EOB run */
EOBRUN--;
}
/* Completed MCU, so update state */
BITREAD_SAVE_STATE(cinfo,entropy->bitstate);
entropy->saved.EOBRUN = EOBRUN; /* only part of saved state we care about */
/* Account for restart interval (no-op if not using restarts) */
entropy->restarts_to_go--;
return TRUE;
undoit:
/* Re-zero any output coefficients that we made newly nonzero */
while (num_newnz > 0)
(*block)[newnz_pos[--num_newnz]] = 0;
return FALSE;
}
/*
* Module initialization routine for progressive Huffman entropy decoding.
*/
GLOBAL void
jinit_phuff_decoder (j_decompress_ptr cinfo)
{
phuff_entropy_ptr entropy;
int *coef_bit_ptr;
int ci, i;
entropy = (phuff_entropy_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(phuff_entropy_decoder));
cinfo->entropy = (struct jpeg_entropy_decoder *) entropy;
entropy->pub.start_pass = start_pass_phuff_decoder;
/* Mark derived tables unallocated */
for (i = 0; i < NUM_HUFF_TBLS; i++) {
entropy->derived_tbls[i] = NULL;
}
/* Create progression status table */
cinfo->coef_bits = (int (*)[DCTSIZE2])
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
cinfo->num_components*DCTSIZE2*SIZEOF(int));
coef_bit_ptr = & cinfo->coef_bits[0][0];
for (ci = 0; ci < cinfo->num_components; ci++)
for (i = 0; i < DCTSIZE2; i++)
*coef_bit_ptr++ = -1;
}
#endif /* D_PROGRESSIVE_SUPPORTED */

25
jdpostct.c
View File

@ -1,7 +1,7 @@
/*
* jdpostct.c
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -79,6 +79,15 @@ start_pass_dpost (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)
if (cinfo->quantize_colors) {
/* Single-pass processing with color quantization. */
post->pub.post_process_data = post_process_1pass;
/* We could be doing buffered-image output before starting a 2-pass
* color quantization; in that case, jinit_d_post_controller did not
* allocate a strip buffer. Use the virtual-array buffer as workspace.
*/
if (post->buffer == NULL) {
post->buffer = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, post->whole_image,
(JDIMENSION) 0, post->strip_height, TRUE);
}
} else {
/* For single-pass processing without color quantization,
* I have no work to do; just call the upsampler directly.
@ -158,7 +167,8 @@ post_process_prepass (j_decompress_ptr cinfo,
/* Reposition virtual buffer if at start of strip. */
if (post->next_row == 0) {
post->buffer = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, post->whole_image, post->starting_row, TRUE);
((j_common_ptr) cinfo, post->whole_image,
post->starting_row, post->strip_height, TRUE);
}
/* Upsample some data (up to a strip height's worth). */
@ -201,7 +211,8 @@ post_process_2pass (j_decompress_ptr cinfo,
/* Reposition virtual buffer if at start of strip. */
if (post->next_row == 0) {
post->buffer = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, post->whole_image, post->starting_row, FALSE);
((j_common_ptr) cinfo, post->whole_image,
post->starting_row, post->strip_height, FALSE);
}
/* Determine number of rows to emit. */
@ -246,6 +257,7 @@ jinit_d_post_controller (j_decompress_ptr cinfo, boolean need_full_buffer)
cinfo->post = (struct jpeg_d_post_controller *) post;
post->pub.start_pass = start_pass_dpost;
post->whole_image = NULL; /* flag for no virtual arrays */
post->buffer = NULL; /* flag for no strip buffer */
/* Create the quantization buffer, if needed */
if (cinfo->quantize_colors) {
@ -256,11 +268,14 @@ jinit_d_post_controller (j_decompress_ptr cinfo, boolean need_full_buffer)
post->strip_height = (JDIMENSION) cinfo->max_v_samp_factor;
if (need_full_buffer) {
/* Two-pass color quantization: need full-image storage. */
/* We round up the number of rows to a multiple of the strip height. */
#ifdef QUANT_2PASS_SUPPORTED
post->whole_image = (*cinfo->mem->request_virt_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
cinfo->output_width * cinfo->out_color_components,
cinfo->output_height, post->strip_height);
(JDIMENSION) jround_up((long) cinfo->output_height,
(long) post->strip_height),
post->strip_height);
#else
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
#endif /* QUANT_2PASS_SUPPORTED */

122
jdtrans.c Normal file
View File

@ -0,0 +1,122 @@
/*
* jdtrans.c
*
* Copyright (C) 1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains library routines for transcoding decompression,
* that is, reading raw DCT coefficient arrays from an input JPEG file.
* The routines in jdapimin.c will also be needed by a transcoder.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Forward declarations */
LOCAL void transdecode_master_selection JPP((j_decompress_ptr cinfo));
/*
* Read the coefficient arrays from a JPEG file.
* jpeg_read_header must be completed before calling this.
*
* The entire image is read into a set of virtual coefficient-block arrays,
* one per component. The return value is a pointer to the array of
* virtual-array descriptors. These can be manipulated directly via the
* JPEG memory manager, or handed off to jpeg_write_coefficients().
* To release the memory occupied by the virtual arrays, call
* jpeg_finish_decompress() when done with the data.
*
* Returns NULL if suspended. This case need be checked only if
* a suspending data source is used.
*/
GLOBAL jvirt_barray_ptr *
jpeg_read_coefficients (j_decompress_ptr cinfo)
{
if (cinfo->global_state == DSTATE_READY) {
/* First call: initialize active modules */
transdecode_master_selection(cinfo);
cinfo->global_state = DSTATE_RDCOEFS;
} else if (cinfo->global_state != DSTATE_RDCOEFS)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Absorb whole file into the coef buffer */
for (;;) {
int retcode;
/* Call progress monitor hook if present */
if (cinfo->progress != NULL)
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
/* Absorb some more input */
retcode = (*cinfo->inputctl->consume_input) (cinfo);
if (retcode == JPEG_SUSPENDED)
return NULL;
if (retcode == JPEG_REACHED_EOI)
break;
/* Advance progress counter if appropriate */
if (cinfo->progress != NULL &&
(retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) {
if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {
/* startup underestimated number of scans; ratchet up one scan */
cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows;
}
}
}
/* Set state so that jpeg_finish_decompress does the right thing */
cinfo->global_state = DSTATE_STOPPING;
return cinfo->coef->coef_arrays;
}
/*
* Master selection of decompression modules for transcoding.
* This substitutes for jdmaster.c's initialization of the full decompressor.
*/
LOCAL void
transdecode_master_selection (j_decompress_ptr cinfo)
{
/* Entropy decoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code) {
ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
} else {
if (cinfo->progressive_mode) {
#ifdef D_PROGRESSIVE_SUPPORTED
jinit_phuff_decoder(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else
jinit_huff_decoder(cinfo);
}
/* Always get a full-image coefficient buffer. */
jinit_d_coef_controller(cinfo, TRUE);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
/* Initialize input side of decompressor to consume first scan. */
(*cinfo->inputctl->start_input_pass) (cinfo);
/* Initialize progress monitoring. */
if (cinfo->progress != NULL) {
int nscans;
/* Estimate number of scans to set pass_limit. */
if (cinfo->progressive_mode) {
/* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */
nscans = 2 + 3 * cinfo->num_components;
} else if (cinfo->inputctl->has_multiple_scans) {
/* For a nonprogressive multiscan file, estimate 1 scan per component. */
nscans = cinfo->num_components;
} else {
nscans = 1;
}
cinfo->progress->pass_counter = 0L;
cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;
cinfo->progress->completed_passes = 0;
cinfo->progress->total_passes = 1;
}
}

18
jerror.h
View File

@ -1,7 +1,7 @@
/*
* jerror.h
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -52,7 +52,12 @@ JMESSAGE(JERR_BAD_LENGTH, "Bogus marker length")
JMESSAGE(JERR_BAD_MCU_SIZE, "Sampling factors too large for interleaved scan")
JMESSAGE(JERR_BAD_POOL_ID, "Invalid memory pool code %d")
JMESSAGE(JERR_BAD_PRECISION, "Unsupported JPEG data precision %d")
JMESSAGE(JERR_BAD_PROGRESSION,
"Invalid progressive parameters Ss=%d Se=%d Ah=%d Al=%d")
JMESSAGE(JERR_BAD_PROG_SCRIPT,
"Invalid progressive parameters at scan script entry %d")
JMESSAGE(JERR_BAD_SAMPLING, "Bogus sampling factors")
JMESSAGE(JERR_BAD_SCAN_SCRIPT, "Invalid scan script at entry %d")
JMESSAGE(JERR_BAD_STATE, "Improper call to JPEG library in state %d")
JMESSAGE(JERR_BAD_VIRTUAL_ACCESS, "Bogus virtual array access")
JMESSAGE(JERR_BUFFER_SIZE, "Buffer passed to JPEG library is too small")
@ -77,7 +82,10 @@ JMESSAGE(JERR_HUFF_MISSING_CODE, "Missing Huffman code table entry")
JMESSAGE(JERR_IMAGE_TOO_BIG, "Maximum supported image dimension is %u pixels")
JMESSAGE(JERR_INPUT_EMPTY, "Empty input file")
JMESSAGE(JERR_INPUT_EOF, "Premature end of input file")
JMESSAGE(JERR_JFIF_MAJOR, "Unsupported JFIF revision number %d.%02d")
JMESSAGE(JERR_MISMATCHED_QUANT_TABLE,
"Cannot transcode due to multiple use of quantization table %d")
JMESSAGE(JERR_MISSING_DATA, "Scan script does not transmit all data")
JMESSAGE(JERR_MODE_CHANGE, "Invalid color quantization mode change")
JMESSAGE(JERR_NOTIMPL, "Not implemented yet")
JMESSAGE(JERR_NOT_COMPILED, "Requested feature was omitted at compile time")
JMESSAGE(JERR_NO_BACKING_STORE, "Backing store not supported")
@ -125,7 +133,7 @@ JMESSAGE(JTRC_HUFFBITS, " %3d %3d %3d %3d %3d %3d %3d %3d")
JMESSAGE(JTRC_JFIF, "JFIF APP0 marker, density %dx%d %d")
JMESSAGE(JTRC_JFIF_BADTHUMBNAILSIZE,
"Warning: thumbnail image size does not match data length %u")
JMESSAGE(JTRC_JFIF_MINOR, "Warning: unknown JFIF revision number %d.%02d")
JMESSAGE(JTRC_JFIF_MINOR, "Unknown JFIF minor revision number %d.%02d")
JMESSAGE(JTRC_JFIF_THUMBNAIL, " with %d x %d thumbnail image")
JMESSAGE(JTRC_MISC_MARKER, "Skipping marker 0x%02x, length %u")
JMESSAGE(JTRC_PARMLESS_MARKER, "Unexpected marker 0x%02x")
@ -142,6 +150,7 @@ JMESSAGE(JTRC_SOF_COMPONENT, " Component %d: %dhx%dv q=%d")
JMESSAGE(JTRC_SOI, "Start of Image")
JMESSAGE(JTRC_SOS, "Start Of Scan: %d components")
JMESSAGE(JTRC_SOS_COMPONENT, " Component %d: dc=%d ac=%d")
JMESSAGE(JTRC_SOS_PARAMS, " Ss=%d, Se=%d, Ah=%d, Al=%d")
JMESSAGE(JTRC_TFILE_CLOSE, "Closed temporary file %s")
JMESSAGE(JTRC_TFILE_OPEN, "Opened temporary file %s")
JMESSAGE(JTRC_UNKNOWN_IDS,
@ -149,10 +158,13 @@ JMESSAGE(JTRC_UNKNOWN_IDS,
JMESSAGE(JTRC_XMS_CLOSE, "Freed XMS handle %u")
JMESSAGE(JTRC_XMS_OPEN, "Obtained XMS handle %u")
JMESSAGE(JWRN_ADOBE_XFORM, "Unknown Adobe color transform code %d")
JMESSAGE(JWRN_BOGUS_PROGRESSION,
"Inconsistent progression sequence for component %d coefficient %d")
JMESSAGE(JWRN_EXTRANEOUS_DATA,
"Corrupt JPEG data: %u extraneous bytes before marker 0x%02x")
JMESSAGE(JWRN_HIT_MARKER, "Corrupt JPEG data: premature end of data segment")
JMESSAGE(JWRN_HUFF_BAD_CODE, "Corrupt JPEG data: bad Huffman code")
JMESSAGE(JWRN_JFIF_MAJOR, "Warning: unknown JFIF revision number %d.%02d")
JMESSAGE(JWRN_JPEG_EOF, "Premature end of JPEG file")
JMESSAGE(JWRN_MUST_RESYNC,
"Corrupt JPEG data: found marker 0x%02x instead of RST%d")

13
jidctfst.c
View File

@ -1,7 +1,7 @@
/*
* jidctfst.c
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -139,10 +139,15 @@
#ifdef RIGHT_SHIFT_IS_UNSIGNED
#define ISHIFT_TEMPS DCTELEM ishift_temp;
#if BITS_IN_JSAMPLE == 8
#define DCTELEMBITS 16 /* DCTELEM may be 16 or 32 bits */
#else
#define DCTELEMBITS 32 /* DCTELEM must be 32 bits */
#endif
#define IRIGHT_SHIFT(x,shft) \
((ishift_temp = (x)) < 0 ? \
(ishift_temp >> (shft)) | ((~((DCTELEM) 0)) << (32-(shft))) : \
(ishift_temp >> (shft)))
((ishift_temp = (x)) < 0 ? \
(ishift_temp >> (shft)) | ((~((DCTELEM) 0)) << (DCTELEMBITS-(shft))) : \
(ishift_temp >> (shft)))
#else
#define ISHIFT_TEMPS
#define IRIGHT_SHIFT(x,shft) ((x) >> (shft))

237
jmemmgr.c
View File

@ -1,7 +1,7 @@
/*
* jmemmgr.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -151,10 +151,12 @@ struct jvirt_sarray_control {
JSAMPARRAY mem_buffer; /* => the in-memory buffer */
JDIMENSION rows_in_array; /* total virtual array height */
JDIMENSION samplesperrow; /* width of array (and of memory buffer) */
JDIMENSION unitheight; /* # of rows accessed by access_virt_sarray */
JDIMENSION maxaccess; /* max rows accessed by access_virt_sarray */
JDIMENSION rows_in_mem; /* height of memory buffer */
JDIMENSION rowsperchunk; /* allocation chunk size in mem_buffer */
JDIMENSION cur_start_row; /* first logical row # in the buffer */
JDIMENSION first_undef_row; /* row # of first uninitialized row */
boolean pre_zero; /* pre-zero mode requested? */
boolean dirty; /* do current buffer contents need written? */
boolean b_s_open; /* is backing-store data valid? */
jvirt_sarray_ptr next; /* link to next virtual sarray control block */
@ -165,10 +167,12 @@ struct jvirt_barray_control {
JBLOCKARRAY mem_buffer; /* => the in-memory buffer */
JDIMENSION rows_in_array; /* total virtual array height */
JDIMENSION blocksperrow; /* width of array (and of memory buffer) */
JDIMENSION unitheight; /* # of rows accessed by access_virt_barray */
JDIMENSION maxaccess; /* max rows accessed by access_virt_barray */
JDIMENSION rows_in_mem; /* height of memory buffer */
JDIMENSION rowsperchunk; /* allocation chunk size in mem_buffer */
JDIMENSION cur_start_row; /* first logical row # in the buffer */
JDIMENSION first_undef_row; /* row # of first uninitialized row */
boolean pre_zero; /* pre-zero mode requested? */
boolean dirty; /* do current buffer contents need written? */
boolean b_s_open; /* is backing-store data valid? */
jvirt_barray_ptr next; /* link to next virtual barray control block */
@ -481,21 +485,17 @@ alloc_barray (j_common_ptr cinfo, int pool_id,
/*
* About virtual array management:
*
* To allow machines with limited memory to handle large images, all
* processing in the JPEG system is done a few pixel or block rows at a time.
* The above "normal" array routines are only used to allocate strip buffers
* (as wide as the image, but just a few rows high).
* In some cases multiple passes must be made over the data. In these
* cases the virtual array routines are used. The array is still accessed
* a strip at a time, but the memory manager must save the whole array
* for repeated accesses. The intended implementation is that there is
* a strip buffer in memory (as high as is possible given the desired memory
* limit), plus a backing file that holds the rest of the array.
* (as wide as the image, but just a few rows high). Full-image-sized buffers
* are handled as "virtual" arrays. The array is still accessed a strip at a
* time, but the memory manager must save the whole array for repeated
* accesses. The intended implementation is that there is a strip buffer in
* memory (as high as is possible given the desired memory limit), plus a
* backing file that holds the rest of the array.
*
* The request_virt_array routines are told the total size of the image and
* the unit height, which is the number of rows that will be accessed at once;
* the in-memory buffer should be made a multiple of this height for best
* efficiency.
* the maximum number of rows that will be accessed at once. The in-memory
* buffer must be at least as large as the maxaccess value.
*
* The request routines create control blocks but not the in-memory buffers.
* That is postponed until realize_virt_arrays is called. At that time the
@ -506,30 +506,23 @@ alloc_barray (j_common_ptr cinfo, int pool_id,
* area accessible (after reading or writing the backing file, if necessary).
* Note that the access routines are told whether the caller intends to modify
* the accessed strip; during a read-only pass this saves having to rewrite
* data to disk.
* data to disk. The access routines are also responsible for pre-zeroing
* any newly accessed rows, if pre-zeroing was requested.
*
* The typical access pattern is one top-to-bottom pass to write the data,
* followed by one or more read-only top-to-bottom passes. However, other
* access patterns may occur while reading. For example, translation of image
* formats that use bottom-to-top scan order will require bottom-to-top read
* passes. The memory manager need not support multiple write passes nor
* funny write orders (meaning that rearranging rows must be handled while
* reading data out of the virtual array, not while putting it in). THIS WILL
* PROBABLY NEED TO CHANGE ... will need multiple write passes for progressive
* JPEG decoding.
*
* In current usage, the access requests are always for nonoverlapping strips;
* that is, successive access start_row numbers always differ by exactly the
* unitheight. This allows fairly simple buffer dump/reload logic if the
* in-memory buffer is made a multiple of the unitheight. The code below
* would work with overlapping access requests, but not very efficiently.
* In current usage, the access requests are usually for nonoverlapping
* strips; that is, successive access start_row numbers differ by exactly
* num_rows = maxaccess. This means we can get good performance with simple
* buffer dump/reload logic, by making the in-memory buffer be a multiple
* of the access height; then there will never be accesses across bufferload
* boundaries. The code will still work with overlapping access requests,
* but it doesn't handle bufferload overlaps very efficiently.
*/
METHODDEF jvirt_sarray_ptr
request_virt_sarray (j_common_ptr cinfo, int pool_id,
request_virt_sarray (j_common_ptr cinfo, int pool_id, boolean pre_zero,
JDIMENSION samplesperrow, JDIMENSION numrows,
JDIMENSION unitheight)
JDIMENSION maxaccess)
/* Request a virtual 2-D sample array */
{
my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
@ -539,9 +532,6 @@ request_virt_sarray (j_common_ptr cinfo, int pool_id,
if (pool_id != JPOOL_IMAGE)
ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
/* Round array size up to a multiple of unitheight */
numrows = (JDIMENSION) jround_up((long) numrows, (long) unitheight);
/* get control block */
result = (jvirt_sarray_ptr) alloc_small(cinfo, pool_id,
SIZEOF(struct jvirt_sarray_control));
@ -549,7 +539,8 @@ request_virt_sarray (j_common_ptr cinfo, int pool_id,
result->mem_buffer = NULL; /* marks array not yet realized */
result->rows_in_array = numrows;
result->samplesperrow = samplesperrow;
result->unitheight = unitheight;
result->maxaccess = maxaccess;
result->pre_zero = pre_zero;
result->b_s_open = FALSE; /* no associated backing-store object */
result->next = mem->virt_sarray_list; /* add to list of virtual arrays */
mem->virt_sarray_list = result;
@ -559,9 +550,9 @@ request_virt_sarray (j_common_ptr cinfo, int pool_id,
METHODDEF jvirt_barray_ptr
request_virt_barray (j_common_ptr cinfo, int pool_id,
request_virt_barray (j_common_ptr cinfo, int pool_id, boolean pre_zero,
JDIMENSION blocksperrow, JDIMENSION numrows,
JDIMENSION unitheight)
JDIMENSION maxaccess)
/* Request a virtual 2-D coefficient-block array */
{
my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
@ -571,9 +562,6 @@ request_virt_barray (j_common_ptr cinfo, int pool_id,
if (pool_id != JPOOL_IMAGE)
ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
/* Round array size up to a multiple of unitheight */
numrows = (JDIMENSION) jround_up((long) numrows, (long) unitheight);
/* get control block */
result = (jvirt_barray_ptr) alloc_small(cinfo, pool_id,
SIZEOF(struct jvirt_barray_control));
@ -581,7 +569,8 @@ request_virt_barray (j_common_ptr cinfo, int pool_id,
result->mem_buffer = NULL; /* marks array not yet realized */
result->rows_in_array = numrows;
result->blocksperrow = blocksperrow;
result->unitheight = unitheight;
result->maxaccess = maxaccess;
result->pre_zero = pre_zero;
result->b_s_open = FALSE; /* no associated backing-store object */
result->next = mem->virt_barray_list; /* add to list of virtual arrays */
mem->virt_barray_list = result;
@ -595,67 +584,67 @@ realize_virt_arrays (j_common_ptr cinfo)
/* Allocate the in-memory buffers for any unrealized virtual arrays */
{
my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
long space_per_unitheight, maximum_space, avail_mem;
long unitheights, max_unitheights;
long space_per_minheight, maximum_space, avail_mem;
long minheights, max_minheights;
jvirt_sarray_ptr sptr;
jvirt_barray_ptr bptr;
/* Compute the minimum space needed (unitheight rows in each buffer)
/* Compute the minimum space needed (maxaccess rows in each buffer)
* and the maximum space needed (full image height in each buffer).
* These may be of use to the system-dependent jpeg_mem_available routine.
*/
space_per_unitheight = 0;
space_per_minheight = 0;
maximum_space = 0;
for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
if (sptr->mem_buffer == NULL) { /* if not realized yet */
space_per_unitheight += (long) sptr->unitheight *
(long) sptr->samplesperrow * SIZEOF(JSAMPLE);
space_per_minheight += (long) sptr->maxaccess *
(long) sptr->samplesperrow * SIZEOF(JSAMPLE);
maximum_space += (long) sptr->rows_in_array *
(long) sptr->samplesperrow * SIZEOF(JSAMPLE);
}
}
for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
if (bptr->mem_buffer == NULL) { /* if not realized yet */
space_per_unitheight += (long) bptr->unitheight *
(long) bptr->blocksperrow * SIZEOF(JBLOCK);
space_per_minheight += (long) bptr->maxaccess *
(long) bptr->blocksperrow * SIZEOF(JBLOCK);
maximum_space += (long) bptr->rows_in_array *
(long) bptr->blocksperrow * SIZEOF(JBLOCK);
}
}
if (space_per_unitheight <= 0)
if (space_per_minheight <= 0)
return; /* no unrealized arrays, no work */
/* Determine amount of memory to actually use; this is system-dependent. */
avail_mem = jpeg_mem_available(cinfo, space_per_unitheight, maximum_space,
avail_mem = jpeg_mem_available(cinfo, space_per_minheight, maximum_space,
mem->total_space_allocated);
/* If the maximum space needed is available, make all the buffers full
* height; otherwise parcel it out with the same number of unitheights
* height; otherwise parcel it out with the same number of minheights
* in each buffer.
*/
if (avail_mem >= maximum_space)
max_unitheights = 1000000000L;
max_minheights = 1000000000L;
else {
max_unitheights = avail_mem / space_per_unitheight;
max_minheights = avail_mem / space_per_minheight;
/* If there doesn't seem to be enough space, try to get the minimum
* anyway. This allows a "stub" implementation of jpeg_mem_available().
*/
if (max_unitheights <= 0)
max_unitheights = 1;
if (max_minheights <= 0)
max_minheights = 1;
}
/* Allocate the in-memory buffers and initialize backing store as needed. */
for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
if (sptr->mem_buffer == NULL) { /* if not realized yet */
unitheights = ((long) sptr->rows_in_array - 1L) / sptr->unitheight + 1L;
if (unitheights <= max_unitheights) {
minheights = ((long) sptr->rows_in_array - 1L) / sptr->maxaccess + 1L;
if (minheights <= max_minheights) {
/* This buffer fits in memory */
sptr->rows_in_mem = sptr->rows_in_array;
} else {
/* It doesn't fit in memory, create backing store. */
sptr->rows_in_mem = (JDIMENSION) (max_unitheights * sptr->unitheight);
sptr->rows_in_mem = (JDIMENSION) (max_minheights * sptr->maxaccess);
jpeg_open_backing_store(cinfo, & sptr->b_s_info,
(long) sptr->rows_in_array *
(long) sptr->samplesperrow *
@ -666,19 +655,20 @@ realize_virt_arrays (j_common_ptr cinfo)
sptr->samplesperrow, sptr->rows_in_mem);
sptr->rowsperchunk = mem->last_rowsperchunk;
sptr->cur_start_row = 0;
sptr->first_undef_row = 0;
sptr->dirty = FALSE;
}
}
for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
if (bptr->mem_buffer == NULL) { /* if not realized yet */
unitheights = ((long) bptr->rows_in_array - 1L) / bptr->unitheight + 1L;
if (unitheights <= max_unitheights) {
minheights = ((long) bptr->rows_in_array - 1L) / bptr->maxaccess + 1L;
if (minheights <= max_minheights) {
/* This buffer fits in memory */
bptr->rows_in_mem = bptr->rows_in_array;
} else {
/* It doesn't fit in memory, create backing store. */
bptr->rows_in_mem = (JDIMENSION) (max_unitheights * bptr->unitheight);
bptr->rows_in_mem = (JDIMENSION) (max_minheights * bptr->maxaccess);
jpeg_open_backing_store(cinfo, & bptr->b_s_info,
(long) bptr->rows_in_array *
(long) bptr->blocksperrow *
@ -689,6 +679,7 @@ realize_virt_arrays (j_common_ptr cinfo)
bptr->blocksperrow, bptr->rows_in_mem);
bptr->rowsperchunk = mem->last_rowsperchunk;
bptr->cur_start_row = 0;
bptr->first_undef_row = 0;
bptr->dirty = FALSE;
}
}
@ -699,7 +690,7 @@ LOCAL void
do_sarray_io (j_common_ptr cinfo, jvirt_sarray_ptr ptr, boolean writing)
/* Do backing store read or write of a virtual sample array */
{
long bytesperrow, file_offset, byte_count, rows, i;
long bytesperrow, file_offset, byte_count, rows, thisrow, i;
bytesperrow = (long) ptr->samplesperrow * SIZEOF(JSAMPLE);
file_offset = ptr->cur_start_row * bytesperrow;
@ -707,9 +698,11 @@ do_sarray_io (j_common_ptr cinfo, jvirt_sarray_ptr ptr, boolean writing)
for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) {
/* One chunk, but check for short chunk at end of buffer */
rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i);
/* Transfer no more than is currently defined */
thisrow = (long) ptr->cur_start_row + i;
rows = MIN(rows, (long) ptr->first_undef_row - thisrow);
/* Transfer no more than fits in file */
rows = MIN(rows, (long) ptr->rows_in_array -
((long) ptr->cur_start_row + i));
rows = MIN(rows, (long) ptr->rows_in_array - thisrow);
if (rows <= 0) /* this chunk might be past end of file! */
break;
byte_count = rows * bytesperrow;
@ -730,7 +723,7 @@ LOCAL void
do_barray_io (j_common_ptr cinfo, jvirt_barray_ptr ptr, boolean writing)
/* Do backing store read or write of a virtual coefficient-block array */
{
long bytesperrow, file_offset, byte_count, rows, i;
long bytesperrow, file_offset, byte_count, rows, thisrow, i;
bytesperrow = (long) ptr->blocksperrow * SIZEOF(JBLOCK);
file_offset = ptr->cur_start_row * bytesperrow;
@ -738,9 +731,11 @@ do_barray_io (j_common_ptr cinfo, jvirt_barray_ptr ptr, boolean writing)
for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) {
/* One chunk, but check for short chunk at end of buffer */
rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i);
/* Transfer no more than is currently defined */
thisrow = (long) ptr->cur_start_row + i;
rows = MIN(rows, (long) ptr->first_undef_row - thisrow);
/* Transfer no more than fits in file */
rows = MIN(rows, (long) ptr->rows_in_array -
((long) ptr->cur_start_row + i));
rows = MIN(rows, (long) ptr->rows_in_array - thisrow);
if (rows <= 0) /* this chunk might be past end of file! */
break;
byte_count = rows * bytesperrow;
@ -759,18 +754,23 @@ do_barray_io (j_common_ptr cinfo, jvirt_barray_ptr ptr, boolean writing)
METHODDEF JSAMPARRAY
access_virt_sarray (j_common_ptr cinfo, jvirt_sarray_ptr ptr,
JDIMENSION start_row, boolean writable)
JDIMENSION start_row, JDIMENSION num_rows,
boolean writable)
/* Access the part of a virtual sample array starting at start_row */
/* and extending for ptr->unitheight rows. writable is true if */
/* and extending for num_rows rows. writable is true if */
/* caller intends to modify the accessed area. */
{
JDIMENSION end_row = start_row + num_rows;
JDIMENSION undef_row;
/* debugging check */
if (start_row >= ptr->rows_in_array || ptr->mem_buffer == NULL)
if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess ||
ptr->mem_buffer == NULL)
ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
/* Make the desired part of the virtual array accessible */
if (start_row < ptr->cur_start_row ||
start_row+ptr->unitheight > ptr->cur_start_row+ptr->rows_in_mem) {
end_row > ptr->cur_start_row+ptr->rows_in_mem) {
if (! ptr->b_s_open)
ERREXIT(cinfo, JERR_VIRTUAL_BUG);
/* Flush old buffer contents if necessary */
@ -791,18 +791,42 @@ access_virt_sarray (j_common_ptr cinfo, jvirt_sarray_ptr ptr,
/* use long arithmetic here to avoid overflow & unsigned problems */
long ltemp;
ltemp = (long) start_row + (long) ptr->unitheight -
(long) ptr->rows_in_mem;
ltemp = (long) end_row - (long) ptr->rows_in_mem;
if (ltemp < 0)
ltemp = 0; /* don't fall off front end of file */
ptr->cur_start_row = (JDIMENSION) ltemp;
}
/* If reading, read in the selected part of the array.
* If we are writing, we need not pre-read the selected portion,
* since the access sequence constraints ensure it would be garbage.
/* Read in the selected part of the array.
* During the initial write pass, we will do no actual read
* because the selected part is all undefined.
*/
if (! writable) {
do_sarray_io(cinfo, ptr, FALSE);
do_sarray_io(cinfo, ptr, FALSE);
}
/* Ensure the accessed part of the array is defined; prezero if needed.
* To improve locality of access, we only prezero the part of the array
* that the caller is about to access, not the entire in-memory array.
*/
if (ptr->first_undef_row < end_row) {
if (ptr->first_undef_row < start_row) {
if (writable) /* writer skipped over a section of array */
ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
undef_row = start_row; /* but reader is allowed to read ahead */
} else {
undef_row = ptr->first_undef_row;
}
if (writable)
ptr->first_undef_row = end_row;
if (ptr->pre_zero) {
size_t bytesperrow = (size_t) ptr->samplesperrow * SIZEOF(JSAMPLE);
undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */
end_row -= ptr->cur_start_row;
while (undef_row < end_row) {
jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
undef_row++;
}
} else {
if (! writable) /* reader looking at undefined data */
ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
}
}
/* Flag the buffer dirty if caller will write in it */
@ -815,18 +839,23 @@ access_virt_sarray (j_common_ptr cinfo, jvirt_sarray_ptr ptr,
METHODDEF JBLOCKARRAY
access_virt_barray (j_common_ptr cinfo, jvirt_barray_ptr ptr,
JDIMENSION start_row, boolean writable)
JDIMENSION start_row, JDIMENSION num_rows,
boolean writable)
/* Access the part of a virtual block array starting at start_row */
/* and extending for ptr->unitheight rows. writable is true if */
/* and extending for num_rows rows. writable is true if */
/* caller intends to modify the accessed area. */
{
JDIMENSION end_row = start_row + num_rows;
JDIMENSION undef_row;
/* debugging check */
if (start_row >= ptr->rows_in_array || ptr->mem_buffer == NULL)
if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess ||
ptr->mem_buffer == NULL)
ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
/* Make the desired part of the virtual array accessible */
if (start_row < ptr->cur_start_row ||
start_row+ptr->unitheight > ptr->cur_start_row+ptr->rows_in_mem) {
end_row > ptr->cur_start_row+ptr->rows_in_mem) {
if (! ptr->b_s_open)
ERREXIT(cinfo, JERR_VIRTUAL_BUG);
/* Flush old buffer contents if necessary */
@ -847,18 +876,42 @@ access_virt_barray (j_common_ptr cinfo, jvirt_barray_ptr ptr,
/* use long arithmetic here to avoid overflow & unsigned problems */
long ltemp;
ltemp = (long) start_row + (long) ptr->unitheight -
(long) ptr->rows_in_mem;
ltemp = (long) end_row - (long) ptr->rows_in_mem;
if (ltemp < 0)
ltemp = 0; /* don't fall off front end of file */
ptr->cur_start_row = (JDIMENSION) ltemp;
}
/* If reading, read in the selected part of the array.
* If we are writing, we need not pre-read the selected portion,
* since the access sequence constraints ensure it would be garbage.
/* Read in the selected part of the array.
* During the initial write pass, we will do no actual read
* because the selected part is all undefined.
*/
if (! writable) {
do_barray_io(cinfo, ptr, FALSE);
do_barray_io(cinfo, ptr, FALSE);
}
/* Ensure the accessed part of the array is defined; prezero if needed.
* To improve locality of access, we only prezero the part of the array
* that the caller is about to access, not the entire in-memory array.
*/
if (ptr->first_undef_row < end_row) {
if (ptr->first_undef_row < start_row) {
if (writable) /* writer skipped over a section of array */
ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
undef_row = start_row; /* but reader is allowed to read ahead */
} else {
undef_row = ptr->first_undef_row;
}
if (writable)
ptr->first_undef_row = end_row;
if (ptr->pre_zero) {
size_t bytesperrow = (size_t) ptr->blocksperrow * SIZEOF(JBLOCK);
undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */
end_row -= ptr->cur_start_row;
while (undef_row < end_row) {
jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
undef_row++;
}
} else {
if (! writable) /* reader looking at undefined data */
ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
}
}
/* Flag the buffer dirty if caller will write in it */

9
jmorecfg.h
View File

@ -1,7 +1,7 @@
/*
* jmorecfg.h
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -249,13 +249,16 @@ typedef int boolean;
/* Encoder capability options: */
#undef C_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */
#undef C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? (NYI) */
#define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */
#define C_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/
#define ENTROPY_OPT_SUPPORTED /* Optimization of entropy coding parms? */
/* Note: if you selected 12-bit data precision, it is dangerous to turn off
* ENTROPY_OPT_SUPPORTED. The standard Huffman tables are only good for 8-bit
* precision, so jchuff.c normally uses entropy optimization to compute
* usable tables for higher precision. If you don't want to do optimization,
* you'll have to supply different default Huffman tables.
* The exact same statements apply for progressive JPEG: the default tables
* don't work for progressive mode. (This may get fixed, however.)
*/
#define INPUT_SMOOTHING_SUPPORTED /* Input image smoothing option? */
@ -263,6 +266,8 @@ typedef int boolean;
#undef D_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */
#define D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */
#define D_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/
#define BLOCK_SMOOTHING_SUPPORTED /* Block smoothing? (Progressive only) */
#define IDCT_SCALING_SUPPORTED /* Output rescaling via IDCT? */
#undef UPSAMPLE_SCALING_SUPPORTED /* Output rescaling at upsample stage? */
#define UPSAMPLE_MERGING_SUPPORTED /* Fast path for sloppy upsampling? */

80
jpegint.h
View File

@ -15,23 +15,28 @@
typedef enum { /* Operating modes for buffer controllers */
JBUF_PASS_THRU, /* Plain stripwise operation */
JBUF_CRANK_SOURCE, /* Run source subobject, no output expected */
/* Remaining modes require a full-image buffer to have been created */
JBUF_SAVE_SOURCE, /* Run source subobject only, save output */
JBUF_CRANK_DEST, /* Run dest subobject only, using saved data */
JBUF_SAVE_AND_PASS /* Run both subobjects, save output */
} J_BUF_MODE;
/* Values of global_state field */
/* Values of global_state field (jdapi.c has some dependencies on ordering!) */
#define CSTATE_START 100 /* after create_compress */
#define CSTATE_SCANNING 101 /* start_compress done, write_scanlines OK */
#define CSTATE_RAW_OK 102 /* start_compress done, write_raw_data OK */
#define CSTATE_WRCOEFS 103 /* jpeg_write_coefficients done */
#define DSTATE_START 200 /* after create_decompress */
#define DSTATE_INHEADER 201 /* read_header initialized but not done */
#define DSTATE_READY 202 /* read_header done, found image */
#define DSTATE_SCANNING 203 /* start_decompress done, read_scanlines OK */
#define DSTATE_RAW_OK 204 /* start_decompress done, read_raw_data OK */
#define DSTATE_STOPPING 205 /* done reading data, looking for EOI */
#define DSTATE_INHEADER 201 /* reading header markers, no SOS yet */
#define DSTATE_READY 202 /* found SOS, ready for start_decompress */
#define DSTATE_PRELOAD 203 /* reading multiscan file in start_decompress*/
#define DSTATE_PRESCAN 204 /* performing dummy pass for 2-pass quant */
#define DSTATE_SCANNING 205 /* start_decompress done, read_scanlines OK */
#define DSTATE_RAW_OK 206 /* start_decompress done, read_raw_data OK */
#define DSTATE_BUFIMAGE 207 /* expecting jpeg_start_output */
#define DSTATE_BUFPOST 208 /* looking for SOS/EOI in jpeg_finish_output */
#define DSTATE_RDCOEFS 209 /* reading file in jpeg_read_coefficients */
#define DSTATE_STOPPING 210 /* looking for EOI in jpeg_finish_decompress */
/* Declarations for compression modules */
@ -129,12 +134,23 @@ struct jpeg_marker_writer {
/* Master control module */
struct jpeg_decomp_master {
JMETHOD(void, prepare_for_pass, (j_decompress_ptr cinfo));
JMETHOD(void, finish_pass, (j_decompress_ptr cinfo));
JMETHOD(void, prepare_for_output_pass, (j_decompress_ptr cinfo));
JMETHOD(void, finish_output_pass, (j_decompress_ptr cinfo));
/* State variables made visible to other modules */
boolean is_last_pass; /* True during last pass */
boolean eoi_processed; /* True if EOI marker already read */
boolean is_dummy_pass; /* True during 1st pass for 2-pass quant */
};
/* Input control module */
struct jpeg_input_controller {
JMETHOD(int, consume_input, (j_decompress_ptr cinfo));
JMETHOD(void, reset_input_controller, (j_decompress_ptr cinfo));
JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
JMETHOD(void, finish_input_pass, (j_decompress_ptr cinfo));
/* State variables made visible to other modules */
boolean has_multiple_scans; /* True if file has multiple scans */
boolean eoi_reached; /* True when EOI has been consumed */
};
/* Main buffer control (downsampled-data buffer) */
@ -143,17 +159,17 @@ struct jpeg_d_main_controller {
JMETHOD(void, process_data, (j_decompress_ptr cinfo,
JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
JDIMENSION out_rows_avail));
/* During input-only passes, output_buf and out_rows_avail are ignored.
* out_row_ctr is incremented towards the limit num_chunks.
*/
JDIMENSION num_chunks; /* number of chunks to be processed in pass */
};
/* Coefficient buffer control */
struct jpeg_d_coef_controller {
JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));
JMETHOD(boolean, decompress_data, (j_decompress_ptr cinfo,
JSAMPIMAGE output_buf));
JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
JMETHOD(int, consume_data, (j_decompress_ptr cinfo));
JMETHOD(void, start_output_pass, (j_decompress_ptr cinfo));
JMETHOD(int, decompress_data, (j_decompress_ptr cinfo,
JSAMPIMAGE output_buf));
/* Pointer to array of coefficient virtual arrays, or NULL if none */
jvirt_barray_ptr *coef_arrays;
};
/* Decompression postprocessing (color quantization buffer control) */
@ -172,9 +188,8 @@ struct jpeg_d_post_controller {
struct jpeg_marker_reader {
JMETHOD(void, reset_marker_reader, (j_decompress_ptr cinfo));
/* Read markers until SOS or EOI.
* Returns same codes as are defined for jpeg_read_header,
* but HEADER_OK and HEADER_TABLES_ONLY merely indicate which marker type
* stopped the scan --- further validation is needed to declare file OK.
* Returns same codes as are defined for jpeg_consume_input:
* JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
*/
JMETHOD(int, read_markers, (j_decompress_ptr cinfo));
/* Read a restart marker --- exported for use by entropy decoder only */
@ -206,8 +221,7 @@ typedef JMETHOD(void, inverse_DCT_method_ptr,
JSAMPARRAY output_buf, JDIMENSION output_col));
struct jpeg_inverse_dct {
JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
JMETHOD(void, start_output_pass, (j_decompress_ptr cinfo));
JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
/* It is useful to allow each component to have a separate IDCT method. */
inverse_DCT_method_ptr inverse_DCT[MAX_COMPONENTS];
};
@ -241,6 +255,7 @@ struct jpeg_color_quantizer {
JSAMPARRAY input_buf, JSAMPARRAY output_buf,
int num_rows));
JMETHOD(void, finish_pass, (j_decompress_ptr cinfo));
JMETHOD(void, new_color_map, (j_decompress_ptr cinfo));
};
@ -277,7 +292,8 @@ struct jpeg_color_quantizer {
/* Short forms of external names for systems with brain-damaged linkers. */
#ifdef NEED_SHORT_EXTERNAL_NAMES
#define jinit_master_compress jICMaster
#define jinit_compress_master jICompress
#define jinit_c_master_control jICMaster
#define jinit_c_main_controller jICMainC
#define jinit_c_prep_controller jICPrepC
#define jinit_c_coef_controller jICCoefC
@ -285,13 +301,16 @@ struct jpeg_color_quantizer {
#define jinit_downsampler jIDownsampler
#define jinit_forward_dct jIFDCT
#define jinit_huff_encoder jIHEncoder
#define jinit_phuff_encoder jIPHEncoder
#define jinit_marker_writer jIMWriter
#define jinit_master_decompress jIDMaster
#define jinit_d_main_controller jIDMainC
#define jinit_d_coef_controller jIDCoefC
#define jinit_d_post_controller jIDPostC
#define jinit_input_controller jIInCtlr
#define jinit_marker_reader jIMReader
#define jinit_huff_decoder jIHDecoder
#define jinit_phuff_decoder jIPHDecoder
#define jinit_inverse_dct jIIDCT
#define jinit_upsampler jIUpsampler
#define jinit_color_deconverter jIDColor
@ -304,11 +323,15 @@ struct jpeg_color_quantizer {
#define jcopy_sample_rows jCopySamples
#define jcopy_block_row jCopyBlocks
#define jzero_far jZeroFar
#define jpeg_zigzag_order jZIGTable
#define jpeg_natural_order jZAGTable
#endif /* NEED_SHORT_EXTERNAL_NAMES */
/* Compression module initialization routines */
EXTERN void jinit_master_compress JPP((j_compress_ptr cinfo));
EXTERN void jinit_compress_master JPP((j_compress_ptr cinfo));
EXTERN void jinit_c_master_control JPP((j_compress_ptr cinfo,
boolean transcode_only));
EXTERN void jinit_c_main_controller JPP((j_compress_ptr cinfo,
boolean need_full_buffer));
EXTERN void jinit_c_prep_controller JPP((j_compress_ptr cinfo,
@ -319,6 +342,7 @@ EXTERN void jinit_color_converter JPP((j_compress_ptr cinfo));
EXTERN void jinit_downsampler JPP((j_compress_ptr cinfo));
EXTERN void jinit_forward_dct JPP((j_compress_ptr cinfo));
EXTERN void jinit_huff_encoder JPP((j_compress_ptr cinfo));
EXTERN void jinit_phuff_encoder JPP((j_compress_ptr cinfo));
EXTERN void jinit_marker_writer JPP((j_compress_ptr cinfo));
/* Decompression module initialization routines */
EXTERN void jinit_master_decompress JPP((j_decompress_ptr cinfo));
@ -328,8 +352,10 @@ EXTERN void jinit_d_coef_controller JPP((j_decompress_ptr cinfo,
boolean need_full_buffer));
EXTERN void jinit_d_post_controller JPP((j_decompress_ptr cinfo,
boolean need_full_buffer));
EXTERN void jinit_input_controller JPP((j_decompress_ptr cinfo));
EXTERN void jinit_marker_reader JPP((j_decompress_ptr cinfo));
EXTERN void jinit_huff_decoder JPP((j_decompress_ptr cinfo));
EXTERN void jinit_phuff_decoder JPP((j_decompress_ptr cinfo));
EXTERN void jinit_inverse_dct JPP((j_decompress_ptr cinfo));
EXTERN void jinit_upsampler JPP((j_decompress_ptr cinfo));
EXTERN void jinit_color_deconverter JPP((j_decompress_ptr cinfo));
@ -348,7 +374,9 @@ EXTERN void jcopy_sample_rows JPP((JSAMPARRAY input_array, int source_row,
EXTERN void jcopy_block_row JPP((JBLOCKROW input_row, JBLOCKROW output_row,
JDIMENSION num_blocks));
EXTERN void jzero_far JPP((void FAR * target, size_t bytestozero));
/* Constant tables in jutils.c */
extern const int jpeg_zigzag_order[]; /* natural coef order to zigzag order */
extern const int jpeg_natural_order[]; /* zigzag coef order to natural order */
/* Suppress undefined-structure complaints if necessary. */

179
jpeglib.h
View File

@ -1,7 +1,7 @@
/*
* jpeglib.h
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -30,7 +30,7 @@
* Might be useful for tests like "#if JPEG_LIB_VERSION >= 60".
*/
#define JPEG_LIB_VERSION 51 /* Version 5a */
#define JPEG_LIB_VERSION 60 /* Version 6 */
/* Various constants determining the sizes of things.
@ -45,7 +45,17 @@
#define NUM_ARITH_TBLS 16 /* Arith-coding tables are numbered 0..15 */
#define MAX_COMPS_IN_SCAN 4 /* JPEG limit on # of components in one scan */
#define MAX_SAMP_FACTOR 4 /* JPEG limit on sampling factors */
#define MAX_BLOCKS_IN_MCU 10 /* JPEG limit on # of blocks in an MCU */
/* Unfortunately, some bozo at Adobe saw no reason to be bound by the standard;
* the PostScript DCT filter can emit files with many more than 10 blocks/MCU.
* If you happen to run across such a file, you can up D_MAX_BLOCKS_IN_MCU
* to handle it. We even let you do this from the jconfig.h file. However,
* we strongly discourage changing C_MAX_BLOCKS_IN_MCU; just because Adobe
* sometimes emits noncompliant files doesn't mean you should too.
*/
#define C_MAX_BLOCKS_IN_MCU 10 /* compressor's limit on blocks per MCU */
#ifndef D_MAX_BLOCKS_IN_MCU
#define D_MAX_BLOCKS_IN_MCU 10 /* decompressor's limit on blocks per MCU */
#endif
/* This macro is used to declare a "method", that is, a function pointer.
@ -126,6 +136,7 @@ typedef struct {
/* These values may vary between scans. */
/* For compression, they must be supplied by parameter setup; */
/* for decompression, they are read from the SOS marker. */
/* The decompressor output side may not use these variables. */
int dc_tbl_no; /* DC entropy table selector (0..3) */
int ac_tbl_no; /* AC entropy table selector (0..3) */
@ -159,7 +170,8 @@ typedef struct {
*/
boolean component_needed; /* do we need the value of this component? */
/* These values are computed before starting a scan of the component: */
/* These values are computed before starting a scan of the component. */
/* The decompressor output side may not use these variables. */
int MCU_width; /* number of blocks per MCU, horizontally */
int MCU_height; /* number of blocks per MCU, vertically */
int MCU_blocks; /* MCU_width * MCU_height */
@ -167,11 +179,27 @@ typedef struct {
int last_col_width; /* # of non-dummy blocks across in last MCU */
int last_row_height; /* # of non-dummy blocks down in last MCU */
/* Saved quantization table for component; NULL if none yet saved.
* See jdinput.c comments about the need for this information.
* This field is not currently used by the compressor.
*/
JQUANT_TBL * quant_table;
/* Private per-component storage for DCT or IDCT subsystem. */
void * dct_table;
} jpeg_component_info;
/* The script for encoding a multiple-scan file is an array of these: */
typedef struct {
int comps_in_scan; /* number of components encoded in this scan */
int component_index[MAX_COMPS_IN_SCAN]; /* their SOF/comp_info[] indexes */
int Ss, Se; /* progressive JPEG spectral selection parms */
int Ah, Al; /* progressive JPEG successive approx. parms */
} jpeg_scan_info;
/* Known color spaces. */
typedef enum {
@ -280,9 +308,15 @@ struct jpeg_compress_struct {
UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */
UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */
int num_scans; /* # of entries in scan_info array */
const jpeg_scan_info * scan_info; /* script for multi-scan file, or NULL */
/* The default value of scan_info is NULL, which causes a single-scan
* sequential JPEG file to be emitted. To create a multi-scan file,
* set num_scans and scan_info to point to an array of scan definitions.
*/
boolean raw_data_in; /* TRUE=caller supplies downsampled data */
boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */
boolean interleave; /* TRUE=interleaved output, FALSE=not */
boolean optimize_coding; /* TRUE=optimize entropy encoding parms */
boolean CCIR601_sampling; /* TRUE=first samples are cosited */
int smoothing_factor; /* 1..100, or 0 for no input smoothing */
@ -322,6 +356,7 @@ struct jpeg_compress_struct {
/*
* These fields are computed during compression startup
*/
boolean progressive_mode; /* TRUE if scan script uses progressive mode */
int max_h_samp_factor; /* largest h_samp_factor */
int max_v_samp_factor; /* largest v_samp_factor */
@ -344,10 +379,12 @@ struct jpeg_compress_struct {
JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */
int blocks_in_MCU; /* # of DCT blocks per MCU */
int MCU_membership[MAX_BLOCKS_IN_MCU];
int MCU_membership[C_MAX_BLOCKS_IN_MCU];
/* MCU_membership[i] is index in cur_comp_info of component owning */
/* i'th block in an MCU */
int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */
/*
* Links to compression subobjects (methods and private variables of modules)
*/
@ -390,16 +427,22 @@ struct jpeg_decompress_struct {
double output_gamma; /* image gamma wanted in output */
boolean buffered_image; /* TRUE=multiple output passes */
boolean raw_data_out; /* TRUE=downsampled data wanted */
J_DCT_METHOD dct_method; /* IDCT algorithm selector */
boolean do_fancy_upsampling; /* TRUE=apply fancy upsampling */
boolean do_block_smoothing; /* TRUE=apply interblock smoothing */
boolean quantize_colors; /* TRUE=colormapped output wanted */
/* the following are ignored if not quantize_colors: */
boolean two_pass_quantize; /* TRUE=use two-pass color quantization */
J_DITHER_MODE dither_mode; /* type of color dithering to use */
int desired_number_of_colors; /* max number of colors to use */
J_DCT_METHOD dct_method; /* DCT algorithm selector */
boolean do_fancy_upsampling; /* TRUE=apply fancy upsampling */
boolean two_pass_quantize; /* TRUE=use two-pass color quantization */
int desired_number_of_colors; /* max # colors to use in created colormap */
/* these are significant only in buffered-image mode: */
boolean enable_1pass_quant; /* enable future use of 1-pass quantizer */
boolean enable_external_quant;/* enable future use of external colormap */
boolean enable_2pass_quant; /* enable future use of 2-pass quantizer */
/* Description of actual output image that will be returned to application.
* These fields are computed by jpeg_start_decompress().
@ -423,21 +466,47 @@ struct jpeg_decompress_struct {
/* When quantizing colors, the output colormap is described by these fields.
* The application can supply a colormap by setting colormap non-NULL before
* calling jpeg_start_decompress; otherwise a colormap is created during
* jpeg_start_decompress.
* jpeg_start_decompress or jpeg_start_output.
* The map has out_color_components rows and actual_number_of_colors columns.
*/
int actual_number_of_colors; /* number of entries in use */
JSAMPARRAY colormap; /* The color map as a 2-D pixel array */
/* State variable: index of next scaled scanline to be read from
* jpeg_read_scanlines(). Application may use this to control its
* processing loop, e.g., "while (output_scanline < output_height)".
/* State variables: these variables indicate the progress of decompression.
* The application may examine these but must not modify them.
*/
/* Row index of next scanline to be read from jpeg_read_scanlines().
* Application may use this to control its processing loop, e.g.,
* "while (output_scanline < output_height)".
*/
JDIMENSION output_scanline; /* 0 .. output_height-1 */
/* Current input scan number and number of iMCU rows completed in scan.
* These indicate the progress of the decompressor input side.
*/
int input_scan_number; /* Number of SOS markers seen so far */
JDIMENSION input_iMCU_row; /* Number of iMCU rows completed */
/* The "output scan number" is the notional scan being displayed by the
* output side. The decompressor will not allow output scan/row number
* to get ahead of input scan/row, but it can fall arbitrarily far behind.
*/
int output_scan_number; /* Nominal scan number being displayed */
JDIMENSION output_iMCU_row; /* Number of iMCU rows read */
/* Current progression status. coef_bits[c][i] indicates the precision
* with which component c's DCT coefficient i (in zigzag order) is known.
* It is -1 when no data has yet been received, otherwise it is the point
* transform (shift) value for the most recent scan of the coefficient
* (thus, 0 at completion of the progression).
* This pointer is NULL when reading a non-progressive file.
*/
int (*coef_bits)[DCTSIZE2]; /* -1 or current Al value for each coef */
/* Internal JPEG parameters --- the application usually need not look at
* these fields.
* these fields. Note that the decompressor output side may not use
* any parameters that can change between scans.
*/
/* Quantization and Huffman tables are carried forward across input
@ -460,12 +529,13 @@ struct jpeg_decompress_struct {
jpeg_component_info * comp_info;
/* comp_info[i] describes component that appears i'th in SOF */
boolean progressive_mode; /* TRUE if SOFn specifies progressive mode */
boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */
UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */
UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */
UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */
boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */
unsigned int restart_interval; /* MCUs per restart interval, or 0 for no restart */
/* These fields record data obtained from optional markers recognized by
@ -493,11 +563,13 @@ struct jpeg_decompress_struct {
int min_DCT_scaled_size; /* smallest DCT_scaled_size of any component */
JDIMENSION total_iMCU_rows; /* # of iMCU rows to be output by coef ctlr */
/* The coefficient controller outputs data in units of MCU rows as defined
* for fully interleaved scans (whether the JPEG file is interleaved or not).
* There are v_samp_factor * DCT_scaled_size sample rows of each component
* in an "iMCU" (interleaved MCU) row.
JDIMENSION total_iMCU_rows; /* # of iMCU rows in image */
/* The coefficient controller's input and output progress is measured in
* units of "iMCU" (interleaved MCU) rows. These are the same as MCU rows
* in fully interleaved JPEG scans, but are used whether the scan is
* interleaved or not. We define an iMCU row as v_samp_factor DCT block
* rows of each component. Therefore, the IDCT output contains
* v_samp_factor*DCT_scaled_size sample rows of a component per iMCU row.
*/
JSAMPLE * sample_range_limit; /* table for fast range-limiting */
@ -505,6 +577,7 @@ struct jpeg_decompress_struct {
/*
* These fields are valid during any one scan.
* They describe the components and MCUs actually appearing in the scan.
* Note that the decompressor output side must not use these fields.
*/
int comps_in_scan; /* # of JPEG components in this scan */
jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN];
@ -514,10 +587,12 @@ struct jpeg_decompress_struct {
JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */
int blocks_in_MCU; /* # of DCT blocks per MCU */
int MCU_membership[MAX_BLOCKS_IN_MCU];
int MCU_membership[D_MAX_BLOCKS_IN_MCU];
/* MCU_membership[i] is index in cur_comp_info of component owning */
/* i'th block in an MCU */
int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */
/* This field is shared between entropy decoder and marker parser.
* It is either zero or the code of a JPEG marker that has been
* read from the data source, but has not yet been processed.
@ -531,6 +606,7 @@ struct jpeg_decompress_struct {
struct jpeg_d_main_controller * main;
struct jpeg_d_coef_controller * coef;
struct jpeg_d_post_controller * post;
struct jpeg_input_controller * inputctl;
struct jpeg_marker_reader * marker;
struct jpeg_entropy_decoder * entropy;
struct jpeg_inverse_dct * idct;
@ -639,7 +715,7 @@ struct jpeg_source_mgr {
JMETHOD(void, init_source, (j_decompress_ptr cinfo));
JMETHOD(boolean, fill_input_buffer, (j_decompress_ptr cinfo));
JMETHOD(void, skip_input_data, (j_decompress_ptr cinfo, long num_bytes));
JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo));
JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo, int desired));
JMETHOD(void, term_source, (j_decompress_ptr cinfo));
};
@ -677,22 +753,26 @@ struct jpeg_memory_mgr {
JDIMENSION numrows));
JMETHOD(jvirt_sarray_ptr, request_virt_sarray, (j_common_ptr cinfo,
int pool_id,
boolean pre_zero,
JDIMENSION samplesperrow,
JDIMENSION numrows,
JDIMENSION unitheight));
JDIMENSION maxaccess));
JMETHOD(jvirt_barray_ptr, request_virt_barray, (j_common_ptr cinfo,
int pool_id,
boolean pre_zero,
JDIMENSION blocksperrow,
JDIMENSION numrows,
JDIMENSION unitheight));
JDIMENSION maxaccess));
JMETHOD(void, realize_virt_arrays, (j_common_ptr cinfo));
JMETHOD(JSAMPARRAY, access_virt_sarray, (j_common_ptr cinfo,
jvirt_sarray_ptr ptr,
JDIMENSION start_row,
JDIMENSION num_rows,
boolean writable));
JMETHOD(JBLOCKARRAY, access_virt_barray, (j_common_ptr cinfo,
jvirt_barray_ptr ptr,
JDIMENSION start_row,
JDIMENSION num_rows,
boolean writable));
JMETHOD(void, free_pool, (j_common_ptr cinfo, int pool_id));
JMETHOD(void, self_destruct, (j_common_ptr cinfo));
@ -746,6 +826,7 @@ typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo));
#define jpeg_set_linear_quality jSetLQuality
#define jpeg_add_quant_table jAddQuantTable
#define jpeg_quality_scaling jQualityScaling
#define jpeg_simple_progression jSimProgress
#define jpeg_suppress_tables jSuppressTables
#define jpeg_alloc_quant_table jAlcQTable
#define jpeg_alloc_huff_table jAlcHTable
@ -760,8 +841,17 @@ typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo));
#define jpeg_read_scanlines jReadScanlines
#define jpeg_finish_decompress jFinDecompress
#define jpeg_read_raw_data jReadRawData
#define jpeg_has_multiple_scans jHasMultScn
#define jpeg_start_output jStrtOutput
#define jpeg_finish_output jFinOutput
#define jpeg_input_complete jInComplete
#define jpeg_new_colormap jNewCMap
#define jpeg_consume_input jConsumeInput
#define jpeg_calc_output_dimensions jCalcDimensions
#define jpeg_set_marker_processor jSetMarker
#define jpeg_read_coefficients jReadCoefs
#define jpeg_write_coefficients jWrtCoefs
#define jpeg_copy_critical_parameters jCopyCrit
#define jpeg_abort_compress jAbrtCompress
#define jpeg_abort_decompress jAbrtDecompress
#define jpeg_abort jAbort
@ -801,6 +891,7 @@ EXTERN void jpeg_add_quant_table JPP((j_compress_ptr cinfo, int which_tbl,
int scale_factor,
boolean force_baseline));
EXTERN int jpeg_quality_scaling JPP((int quality));
EXTERN void jpeg_simple_progression JPP((j_compress_ptr cinfo));
EXTERN void jpeg_suppress_tables JPP((j_compress_ptr cinfo,
boolean suppress));
EXTERN JQUANT_TBL * jpeg_alloc_quant_table JPP((j_common_ptr cinfo));
@ -830,9 +921,9 @@ EXTERN void jpeg_write_tables JPP((j_compress_ptr cinfo));
EXTERN int jpeg_read_header JPP((j_decompress_ptr cinfo,
boolean require_image));
/* Return value is one of: */
#define JPEG_HEADER_OK 0 /* Found valid image datastream */
#define JPEG_HEADER_TABLES_ONLY 1 /* Found valid table-specs-only datastream */
#define JPEG_SUSPENDED 2 /* Had to suspend before end of headers */
#define JPEG_SUSPENDED 0 /* Suspended due to lack of input data */
#define JPEG_HEADER_OK 1 /* Found valid image datastream */
#define JPEG_HEADER_TABLES_ONLY 2 /* Found valid table-specs-only datastream */
/* If you pass require_image = TRUE (normal case), you need not check for
* a TABLES_ONLY return code; an abbreviated file will cause an error exit.
* JPEG_SUSPENDED is only possible if you use a data source module that can
@ -840,7 +931,7 @@ EXTERN int jpeg_read_header JPP((j_decompress_ptr cinfo,
*/
/* Main entry points for decompression */
EXTERN void jpeg_start_decompress JPP((j_decompress_ptr cinfo));
EXTERN boolean jpeg_start_decompress JPP((j_decompress_ptr cinfo));
EXTERN JDIMENSION jpeg_read_scanlines JPP((j_decompress_ptr cinfo,
JSAMPARRAY scanlines,
JDIMENSION max_lines));
@ -851,6 +942,21 @@ EXTERN JDIMENSION jpeg_read_raw_data JPP((j_decompress_ptr cinfo,
JSAMPIMAGE data,
JDIMENSION max_lines));
/* Additional entry points for buffered-image mode. */
EXTERN boolean jpeg_has_multiple_scans JPP((j_decompress_ptr cinfo));
EXTERN boolean jpeg_start_output JPP((j_decompress_ptr cinfo,
int scan_number));
EXTERN boolean jpeg_finish_output JPP((j_decompress_ptr cinfo));
EXTERN boolean jpeg_input_complete JPP((j_decompress_ptr cinfo));
EXTERN void jpeg_new_colormap JPP((j_decompress_ptr cinfo));
EXTERN int jpeg_consume_input JPP((j_decompress_ptr cinfo));
/* Return value is one of: */
/* #define JPEG_SUSPENDED 0 Suspended due to lack of input data */
#define JPEG_REACHED_SOS 1 /* Reached start of new scan */
#define JPEG_REACHED_EOI 2 /* Reached end of image */
#define JPEG_ROW_COMPLETED 3 /* Completed one iMCU row */
#define JPEG_SCAN_COMPLETED 4 /* Completed last iMCU row of a scan */
/* Precalculate output dimensions for current decompression parameters. */
EXTERN void jpeg_calc_output_dimensions JPP((j_decompress_ptr cinfo));
@ -859,6 +965,13 @@ EXTERN void jpeg_set_marker_processor JPP((j_decompress_ptr cinfo,
int marker_code,
jpeg_marker_parser_method routine));
/* Read or write raw DCT coefficients --- useful for lossless transcoding. */
EXTERN jvirt_barray_ptr * jpeg_read_coefficients JPP((j_decompress_ptr cinfo));
EXTERN void jpeg_write_coefficients JPP((j_compress_ptr cinfo,
jvirt_barray_ptr * coef_arrays));
EXTERN void jpeg_copy_critical_parameters JPP((j_decompress_ptr srcinfo,
j_compress_ptr dstinfo));
/* If you choose to abort compression or decompression before completing
* jpeg_finish_(de)compress, then you need to clean up to release memory,
* temporary files, etc. You can just call jpeg_destroy_(de)compress
@ -875,7 +988,8 @@ EXTERN void jpeg_abort JPP((j_common_ptr cinfo));
EXTERN void jpeg_destroy JPP((j_common_ptr cinfo));
/* Default restart-marker-resync procedure for use by data source modules */
EXTERN boolean jpeg_resync_to_restart JPP((j_decompress_ptr cinfo));
EXTERN boolean jpeg_resync_to_restart JPP((j_decompress_ptr cinfo,
int desired));
/* These marker codes are exported since applications and data source modules
@ -910,6 +1024,7 @@ struct jpeg_decomp_master { long dummy; };
struct jpeg_d_main_controller { long dummy; };
struct jpeg_d_coef_controller { long dummy; };
struct jpeg_d_post_controller { long dummy; };
struct jpeg_input_controller { long dummy; };
struct jpeg_marker_reader { long dummy; };
struct jpeg_entropy_decoder { long dummy; };
struct jpeg_inverse_dct { long dummy; };

150
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@ -0,0 +1,150 @@
.TH JPEGTRAN 1 "15 June 1995"
.SH NAME
jpegtran \- lossless transcoding of JPEG files
.SH SYNOPSIS
.B jpegtran
[
.I options
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B jpegtran
translates JPEG files from one variant of JPEG to another, for example
from baseline JPEG to progressive JPEG. The transformation is lossless:
no image degradation occurs, which would not be true if you used
.B djpeg
followed by
.BR cjpeg .
However, you cannot alter the image quality, because that would not be
a lossless operation.
.B jpegtran
reads the named JPEG/JFIF file, or the standard input if no file is
named, and produces a JPEG/JFIF file on the standard output.
.SH OPTIONS
.B jpegtran
accepts a subset of the switches recognized by
.BR cjpeg .
If you specify no switches, you get a plain baseline JPEG output file.
.PP
All switch names may be abbreviated; for example,
.B \-optimize
may be written
.B \-opt
or
.BR \-o .
Upper and lower case are equivalent.
British spellings are also accepted (e.g.,
.BR \-optimise ),
though for brevity these are not mentioned below.
.PP
The basic switches are:
.TP
.B \-optimize
Perform optimization of entropy encoding parameters. Without this, default
encoding parameters are used.
.B \-optimize
usually makes the JPEG file a little smaller, but at the price of slower
compression. Note that
.B \-progressive
implies
.BR \-optimize .
.TP
.B \-progressive
Create progressive JPEG file (see below).
.PP
The
.B \-progressive
switch creates a "progressive JPEG" file. In this type of JPEG file, the data
is stored in multiple scans of increasing quality. If the file is being
transmitted over a slow communications link, the decoder can use the first
scan to display a low-quality image very quickly, and can then improve the
display with each subsequent scan. The final image is exactly equivalent to a
standard JPEG file of the same quality setting, and the total file size is
about the same --- often a little smaller.
.B Caution:
progressive JPEG is not yet widely implemented, so many decoders will be
unable to view a progressive JPEG file at all.
.PP
Switches for advanced users:
.TP
.BI \-restart " N"
Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is
attached to the number.
.B \-restart 0
(the default) means no restart markers.
.TP
.BI \-maxmemory " N"
Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
give more output. Also, version information is printed at startup.
.TP
.B \-debug
Same as
.BR \-verbose .
.PP
The
.B \-restart
option inserts extra markers that allow a JPEG decoder to resynchronize after
a transmission error. Without restart markers, any damage to a compressed
file will usually ruin the image from the point of the error to the end of the
image; with restart markers, the damage is usually confined to the portion of
the image up to the next restart marker. Of course, the restart markers
occupy extra space. We recommend
.B \-restart 1
for images that will be transmitted across unreliable networks such as Usenet.
.PP
Switches for wizards:
.TP
.BI \-scans " file"
Use the scan script given in the specified text file.
.PP
The "wizard" switches are intended for experimentation with JPEG. If you
don't know what you are doing, \fBdon't use them\fR. These switches are
documented further in the file wizard.doc.
.SH EXAMPLES
.LP
This example converts a baseline JPEG file to progressive form:
.IP
.B jpegtran \-progressive
.I foo.jpg
.B >
.I fooprog.jpg
.SH ENVIRONMENT
.TP
.B JPEGMEM
If this environment variable is set, its value is the default memory limit.
The value is specified as described for the
.B \-maxmemory
switch.
.B JPEGMEM
overrides the default value specified when the program was compiled, and
itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR cjpeg (1),
.BR djpeg (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.SH BUGS
Arithmetic coding is not supported for legal reasons.
.PP
Still not as fast as we'd like.

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@ -0,0 +1,370 @@
/*
* jpegtran.c
*
* Copyright (C) 1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains a command-line user interface for JPEG transcoding.
* It is very similar to cjpeg.c, but provides lossless transcoding between
* different JPEG file formats.
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
#include <SIOUX.h> /* Metrowerks declares it here */
#endif
#ifdef THINK_C
#include <console.h> /* Think declares it here */
#endif
#endif
/*
* Argument-parsing code.
* The switch parser is designed to be useful with DOS-style command line
* syntax, ie, intermixed switches and file names, where only the switches
* to the left of a given file name affect processing of that file.
* The main program in this file doesn't actually use this capability...
*/
static const char * progname; /* program name for error messages */
static char * outfilename; /* for -outfile switch */
LOCAL void
usage (void)
/* complain about bad command line */
{
fprintf(stderr, "usage: %s [switches] ", progname);
#ifdef TWO_FILE_COMMANDLINE
fprintf(stderr, "inputfile outputfile\n");
#else
fprintf(stderr, "[inputfile]\n");
#endif
fprintf(stderr, "Switches (names may be abbreviated):\n");
#ifdef ENTROPY_OPT_SUPPORTED
fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
#endif
#ifdef C_PROGRESSIVE_SUPPORTED
fprintf(stderr, " -progressive Create progressive JPEG file\n");
#endif
fprintf(stderr, "Switches for advanced users:\n");
fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n");
fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
fprintf(stderr, " -outfile name Specify name for output file\n");
fprintf(stderr, " -verbose or -debug Emit debug output\n");
fprintf(stderr, "Switches for wizards:\n");
#ifdef C_ARITH_CODING_SUPPORTED
fprintf(stderr, " -arithmetic Use arithmetic coding\n");
#endif
#ifdef C_MULTISCAN_FILES_SUPPORTED
fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n");
#endif
exit(EXIT_FAILURE);
}
LOCAL int
parse_switches (j_compress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
/* Parse optional switches.
* Returns argv[] index of first file-name argument (== argc if none).
* Any file names with indexes <= last_file_arg_seen are ignored;
* they have presumably been processed in a previous iteration.
* (Pass 0 for last_file_arg_seen on the first or only iteration.)
* for_real is FALSE on the first (dummy) pass; we may skip any expensive
* processing.
*/
{
int argn;
char * arg;
boolean simple_progressive;
char * scansarg = NULL; /* saves -scans parm if any */
/* Set up default JPEG parameters. */
simple_progressive = FALSE;
outfilename = NULL;
cinfo->err->trace_level = 0;
/* Scan command line options, adjust parameters */
for (argn = 1; argn < argc; argn++) {
arg = argv[argn];
if (*arg != '-') {
/* Not a switch, must be a file name argument */
if (argn <= last_file_arg_seen) {
outfilename = NULL; /* -outfile applies to just one input file */
continue; /* ignore this name if previously processed */
}
break; /* else done parsing switches */
}
arg++; /* advance past switch marker character */
if (keymatch(arg, "arithmetic", 1)) {
/* Use arithmetic coding. */
#ifdef C_ARITH_CODING_SUPPORTED
cinfo->arith_code = TRUE;
#else
fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
/* Enable debug printouts. */
/* On first -d, print version identification */
static boolean printed_version = FALSE;
if (! printed_version) {
fprintf(stderr, "Independent JPEG Group's JPEGTRAN, version %s\n%s\n",
JVERSION, JCOPYRIGHT);
printed_version = TRUE;
}
cinfo->err->trace_level++;
} else if (keymatch(arg, "maxmemory", 3)) {
/* Maximum memory in Kb (or Mb with 'm'). */
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
if (ch == 'm' || ch == 'M')
lval *= 1000L;
cinfo->mem->max_memory_to_use = lval * 1000L;
} else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
/* Enable entropy parm optimization. */
#ifdef ENTROPY_OPT_SUPPORTED
cinfo->optimize_coding = TRUE;
#else
fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "outfile", 4)) {
/* Set output file name. */
if (++argn >= argc) /* advance to next argument */
usage();
outfilename = argv[argn]; /* save it away for later use */
} else if (keymatch(arg, "progressive", 1)) {
/* Select simple progressive mode. */
#ifdef C_PROGRESSIVE_SUPPORTED
simple_progressive = TRUE;
/* We must postpone execution until num_components is known. */
#else
fprintf(stderr, "%s: sorry, progressive output was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "restart", 1)) {
/* Restart interval in MCU rows (or in MCUs with 'b'). */
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
if (lval < 0 || lval > 65535L)
usage();
if (ch == 'b' || ch == 'B') {
cinfo->restart_interval = (unsigned int) lval;
cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
} else {
cinfo->restart_in_rows = (int) lval;
/* restart_interval will be computed during startup */
}
} else if (keymatch(arg, "scans", 2)) {
/* Set scan script. */
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (++argn >= argc) /* advance to next argument */
usage();
scansarg = argv[argn];
/* We must postpone reading the file in case -progressive appears. */
#else
fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else {
usage(); /* bogus switch */
}
}
/* Post-switch-scanning cleanup */
if (for_real) {
#ifdef C_PROGRESSIVE_SUPPORTED
if (simple_progressive) /* process -progressive; -scans can override */
jpeg_simple_progression(cinfo);
#endif
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (scansarg != NULL) /* process -scans if it was present */
if (! read_scan_script(cinfo, scansarg))
usage();
#endif
}
return argn; /* return index of next arg (file name) */
}
/*
* The main program.
*/
GLOBAL int
main (int argc, char **argv)
{
struct jpeg_decompress_struct srcinfo;
struct jpeg_compress_struct dstinfo;
struct jpeg_error_mgr jsrcerr, jdsterr;
#ifdef PROGRESS_REPORT
struct cdjpeg_progress_mgr progress;
#endif
jvirt_barray_ptr * coef_arrays;
int file_index;
FILE * input_file;
FILE * output_file;
/* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
argc = ccommand(&argv);
#endif
progname = argv[0];
if (progname == NULL || progname[0] == 0)
progname = "jpegtran"; /* in case C library doesn't provide it */
/* Initialize the JPEG decompression object with default error handling. */
srcinfo.err = jpeg_std_error(&jsrcerr);
jpeg_create_decompress(&srcinfo);
/* Initialize the JPEG compression object with default error handling. */
dstinfo.err = jpeg_std_error(&jdsterr);
jpeg_create_compress(&dstinfo);
/* Now safe to enable signal catcher.
* Note: we assume only the decompression object will have virtual arrays.
*/
#ifdef NEED_SIGNAL_CATCHER
enable_signal_catcher((j_common_ptr) &srcinfo);
#endif
/* Scan command line to find file names.
* It is convenient to use just one switch-parsing routine, but the switch
* values read here are ignored; we will rescan the switches after opening
* the input file.
*/
file_index = parse_switches(&dstinfo, argc, argv, 0, FALSE);
jsrcerr.trace_level = jdsterr.trace_level;
#ifdef TWO_FILE_COMMANDLINE
/* Must have either -outfile switch or explicit output file name */
if (outfilename == NULL) {
if (file_index != argc-2) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
outfilename = argv[file_index+1];
} else {
if (file_index != argc-1) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
}
#else
/* Unix style: expect zero or one file name */
if (file_index < argc-1) {
fprintf(stderr, "%s: only one input file\n", progname);
usage();
}
#endif /* TWO_FILE_COMMANDLINE */
/* Open the input file. */
if (file_index < argc) {
if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
exit(EXIT_FAILURE);
}
} else {
/* default input file is stdin */
input_file = read_stdin();
}
/* Open the output file. */
if (outfilename != NULL) {
if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
exit(EXIT_FAILURE);
}
} else {
/* default output file is stdout */
output_file = write_stdout();
}
#ifdef PROGRESS_REPORT
start_progress_monitor((j_common_ptr) &dstinfo, &progress);
#endif
/* Specify data source for decompression */
jpeg_stdio_src(&srcinfo, input_file);
/* Read file header */
(void) jpeg_read_header(&srcinfo, TRUE);
/* Read source file as DCT coefficients */
coef_arrays = jpeg_read_coefficients(&srcinfo);
/* Initialize destination compression parameters from source values */
jpeg_copy_critical_parameters(&srcinfo, &dstinfo);
/* Adjust default compression parameters by re-parsing the options */
file_index = parse_switches(&dstinfo, argc, argv, 0, TRUE);
/* Specify data destination for compression */
jpeg_stdio_dest(&dstinfo, output_file);
/* Start compressor */
jpeg_write_coefficients(&dstinfo, coef_arrays);
/* ought to copy source comments here... */
/* Finish compression and release memory */
jpeg_finish_compress(&dstinfo);
jpeg_destroy_compress(&dstinfo);
(void) jpeg_finish_decompress(&srcinfo);
jpeg_destroy_decompress(&srcinfo);
/* Close files, if we opened them */
if (input_file != stdin)
fclose(input_file);
if (output_file != stdout)
fclose(output_file);
#ifdef PROGRESS_REPORT
end_progress_monitor((j_common_ptr) &dstinfo);
#endif
/* All done. */
exit(jsrcerr.num_warnings + jdsterr.num_warnings ?EXIT_WARNING:EXIT_SUCCESS);
return 0; /* suppress no-return-value warnings */
}

393
jquant1.c
View File

@ -142,11 +142,18 @@ typedef FSERROR FAR *FSERRPTR; /* pointer to error array (in FAR storage!) */
typedef struct {
struct jpeg_color_quantizer pub; /* public fields */
/* Initially allocated colormap is saved here */
JSAMPARRAY sv_colormap; /* The color map as a 2-D pixel array */
int sv_actual; /* number of entries in use */
JSAMPARRAY colorindex; /* Precomputed mapping for speed */
/* colorindex[i][j] = index of color closest to pixel value j in component i,
* premultiplied as described above. Since colormap indexes must fit into
* JSAMPLEs, the entries of this array will too.
*/
boolean is_padded; /* is the colorindex padded for odither? */
int Ncolors[MAX_Q_COMPS]; /* # of values alloced to each component */
/* Variables for ordered dithering */
int row_index; /* cur row's vertical index in dither matrix */
@ -161,9 +168,9 @@ typedef my_cquantizer * my_cquantize_ptr;
/*
* Policy-making subroutines for create_colormap: these routines determine
* the colormap to be used. The rest of the module only assumes that the
* colormap is orthogonal.
* Policy-making subroutines for create_colormap and create_colorindex.
* These routines determine the colormap to be used. The rest of the module
* only assumes that the colormap is orthogonal.
*
* * select_ncolors decides how to divvy up the available colors
* among the components.
@ -258,6 +265,128 @@ largest_input_value (j_decompress_ptr cinfo, int ci, int j, int maxj)
}
/*
* Create the colormap.
*/
LOCAL void
create_colormap (j_decompress_ptr cinfo)
{
my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
JSAMPARRAY colormap; /* Created colormap */
int total_colors; /* Number of distinct output colors */
int i,j,k, nci, blksize, blkdist, ptr, val;
/* Select number of colors for each component */
total_colors = select_ncolors(cinfo, cquantize->Ncolors);
/* Report selected color counts */
if (cinfo->out_color_components == 3)
TRACEMS4(cinfo, 1, JTRC_QUANT_3_NCOLORS,
total_colors, cquantize->Ncolors[0],
cquantize->Ncolors[1], cquantize->Ncolors[2]);
else
TRACEMS1(cinfo, 1, JTRC_QUANT_NCOLORS, total_colors);
/* Allocate and fill in the colormap. */
/* The colors are ordered in the map in standard row-major order, */
/* i.e. rightmost (highest-indexed) color changes most rapidly. */
colormap = (*cinfo->mem->alloc_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
(JDIMENSION) total_colors, (JDIMENSION) cinfo->out_color_components);
/* blksize is number of adjacent repeated entries for a component */
/* blkdist is distance between groups of identical entries for a component */
blkdist = total_colors;
for (i = 0; i < cinfo->out_color_components; i++) {
/* fill in colormap entries for i'th color component */
nci = cquantize->Ncolors[i]; /* # of distinct values for this color */
blksize = blkdist / nci;
for (j = 0; j < nci; j++) {
/* Compute j'th output value (out of nci) for component */
val = output_value(cinfo, i, j, nci-1);
/* Fill in all colormap entries that have this value of this component */
for (ptr = j * blksize; ptr < total_colors; ptr += blkdist) {
/* fill in blksize entries beginning at ptr */
for (k = 0; k < blksize; k++)
colormap[i][ptr+k] = (JSAMPLE) val;
}
}
blkdist = blksize; /* blksize of this color is blkdist of next */
}
/* Save the colormap in private storage,
* where it will survive color quantization mode changes.
*/
cquantize->sv_colormap = colormap;
cquantize->sv_actual = total_colors;
}
/*
* Create the color index table.
*/
LOCAL void
create_colorindex (j_decompress_ptr cinfo)
{
my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
JSAMPROW indexptr;
int i,j,k, nci, blksize, val, pad;
/* For ordered dither, we pad the color index tables by MAXJSAMPLE in
* each direction (input index values can be -MAXJSAMPLE .. 2*MAXJSAMPLE).
* This is not necessary in the other dithering modes. However, we
* flag whether it was done in case user changes dithering mode.
*/
if (cinfo->dither_mode == JDITHER_ORDERED) {
pad = MAXJSAMPLE*2;
cquantize->is_padded = TRUE;
} else {
pad = 0;
cquantize->is_padded = FALSE;
}
cquantize->colorindex = (*cinfo->mem->alloc_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
(JDIMENSION) (MAXJSAMPLE+1 + pad),
(JDIMENSION) cinfo->out_color_components);
/* blksize is number of adjacent repeated entries for a component */
blksize = cquantize->sv_actual;
for (i = 0; i < cinfo->out_color_components; i++) {
/* fill in colorindex entries for i'th color component */
nci = cquantize->Ncolors[i]; /* # of distinct values for this color */
blksize = blksize / nci;
/* adjust colorindex pointers to provide padding at negative indexes. */
if (pad)
cquantize->colorindex[i] += MAXJSAMPLE;
/* in loop, val = index of current output value, */
/* and k = largest j that maps to current val */
indexptr = cquantize->colorindex[i];
val = 0;
k = largest_input_value(cinfo, i, 0, nci-1);
for (j = 0; j <= MAXJSAMPLE; j++) {
while (j > k) /* advance val if past boundary */
k = largest_input_value(cinfo, i, ++val, nci-1);
/* premultiply so that no multiplication needed in main processing */
indexptr[j] = (JSAMPLE) (val * blksize);
}
/* Pad at both ends if necessary */
if (pad)
for (j = 1; j <= MAXJSAMPLE; j++) {
indexptr[-j] = indexptr[0];
indexptr[MAXJSAMPLE+j] = indexptr[MAXJSAMPLE];
}
}
}
/*
* Create an ordered-dither array for a component having ncolors
* distinct output values.
@ -294,114 +423,30 @@ make_odither_array (j_decompress_ptr cinfo, int ncolors)
/*
* Create the colormap and color index table.
* Also creates the ordered-dither tables, if required.
* Create the ordered-dither tables.
* Components having the same number of representative colors may
* share a dither table.
*/
LOCAL void
create_colormap (j_decompress_ptr cinfo)
create_odither_tables (j_decompress_ptr cinfo)
{
my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
JSAMPARRAY colormap; /* Created colormap */
JSAMPROW indexptr;
int total_colors; /* Number of distinct output colors */
int Ncolors[MAX_Q_COMPS]; /* # of values alloced to each component */
ODITHER_MATRIX_PTR odither;
int i,j,k, nci, blksize, blkdist, ptr, val, pad;
/* Select number of colors for each component */
total_colors = select_ncolors(cinfo, Ncolors);
/* Report selected color counts */
if (cinfo->out_color_components == 3)
TRACEMS4(cinfo, 1, JTRC_QUANT_3_NCOLORS,
total_colors, Ncolors[0], Ncolors[1], Ncolors[2]);
else
TRACEMS1(cinfo, 1, JTRC_QUANT_NCOLORS, total_colors);
/* For ordered dither, we pad the color index tables by MAXJSAMPLE in
* each direction (input index values can be -MAXJSAMPLE .. 2*MAXJSAMPLE).
* This is not necessary in the other dithering modes.
*/
pad = (cinfo->dither_mode == JDITHER_ORDERED) ? MAXJSAMPLE*2 : 0;
/* Allocate and fill in the colormap and color index. */
/* The colors are ordered in the map in standard row-major order, */
/* i.e. rightmost (highest-indexed) color changes most rapidly. */
colormap = (*cinfo->mem->alloc_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
(JDIMENSION) total_colors, (JDIMENSION) cinfo->out_color_components);
cquantize->colorindex = (*cinfo->mem->alloc_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
(JDIMENSION) (MAXJSAMPLE+1 + pad),
(JDIMENSION) cinfo->out_color_components);
/* blksize is number of adjacent repeated entries for a component */
/* blkdist is distance between groups of identical entries for a component */
blkdist = total_colors;
int i, j, nci;
for (i = 0; i < cinfo->out_color_components; i++) {
/* fill in colormap entries for i'th color component */
nci = Ncolors[i]; /* # of distinct values for this color */
blksize = blkdist / nci;
for (j = 0; j < nci; j++) {
/* Compute j'th output value (out of nci) for component */
val = output_value(cinfo, i, j, nci-1);
/* Fill in all colormap entries that have this value of this component */
for (ptr = j * blksize; ptr < total_colors; ptr += blkdist) {
/* fill in blksize entries beginning at ptr */
for (k = 0; k < blksize; k++)
colormap[i][ptr+k] = (JSAMPLE) val;
nci = cquantize->Ncolors[i]; /* # of distinct values for this color */
odither = NULL; /* search for matching prior component */
for (j = 0; j < i; j++) {
if (nci == cquantize->Ncolors[j]) {
odither = cquantize->odither[j];
break;
}
}
blkdist = blksize; /* blksize of this color is blkdist of next */
/* adjust colorindex pointers to provide padding at negative indexes. */
if (pad)
cquantize->colorindex[i] += MAXJSAMPLE;
/* fill in colorindex entries for i'th color component */
/* in loop, val = index of current output value, */
/* and k = largest j that maps to current val */
indexptr = cquantize->colorindex[i];
val = 0;
k = largest_input_value(cinfo, i, 0, nci-1);
for (j = 0; j <= MAXJSAMPLE; j++) {
while (j > k) /* advance val if past boundary */
k = largest_input_value(cinfo, i, ++val, nci-1);
/* premultiply so that no multiplication needed in main processing */
indexptr[j] = (JSAMPLE) (val * blksize);
}
/* Pad at both ends if necessary */
if (pad)
for (j = 1; j <= MAXJSAMPLE; j++) {
indexptr[-j] = indexptr[0];
indexptr[MAXJSAMPLE+j] = indexptr[MAXJSAMPLE];
}
}
/* Make the colormap available to the application. */
cinfo->colormap = colormap;
cinfo->actual_number_of_colors = total_colors;
if (cinfo->dither_mode == JDITHER_ORDERED) {
/* Allocate and fill in the ordered-dither tables. Components having
* the same number of representative colors may share a dither table.
*/
for (i = 0; i < cinfo->out_color_components; i++) {
nci = Ncolors[i]; /* # of distinct values for this color */
odither = NULL; /* search for matching prior component */
for (j = 0; j < i; j++) {
if (nci == Ncolors[j]) {
odither = cquantize->odither[j];
break;
}
}
if (odither == NULL) /* need a new table? */
odither = make_odither_array(cinfo, nci);
cquantize->odither[i] = odither;
}
if (odither == NULL) /* need a new table? */
odither = make_odither_array(cinfo, nci);
cquantize->odither[i] = odither;
}
}
@ -609,7 +654,7 @@ quantize_fs_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
errorptr = cquantize->fserrors[ci]; /* => entry before first column */
}
colorindex_ci = cquantize->colorindex[ci];
colormap_ci = cinfo->colormap[ci];
colormap_ci = cquantize->sv_colormap[ci];
/* Preset error values: no error propagated to first pixel from left */
cur = 0;
/* and no error propagated to row below yet */
@ -669,6 +714,25 @@ quantize_fs_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
}
/*
* Allocate workspace for Floyd-Steinberg errors.
*/
LOCAL void
alloc_fs_workspace (j_decompress_ptr cinfo)
{
my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
size_t arraysize;
int i;
arraysize = (size_t) ((cinfo->output_width + 2) * SIZEOF(FSERROR));
for (i = 0; i < cinfo->out_color_components; i++) {
cquantize->fserrors[i] = (FSERRPTR)
(*cinfo->mem->alloc_large)((j_common_ptr) cinfo, JPOOL_IMAGE, arraysize);
}
}
/*
* Initialize for one-pass color quantization.
*/
@ -676,45 +740,13 @@ quantize_fs_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
METHODDEF void
start_pass_1_quant (j_decompress_ptr cinfo, boolean is_pre_scan)
{
/* no work in 1-pass case */
}
/*
* Finish up at the end of the pass.
*/
METHODDEF void
finish_pass_1_quant (j_decompress_ptr cinfo)
{
/* no work in 1-pass case */
}
/*
* Module initialization routine for 1-pass color quantization.
*/
GLOBAL void
jinit_1pass_quantizer (j_decompress_ptr cinfo)
{
my_cquantize_ptr cquantize;
my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
size_t arraysize;
int i;
cquantize = (my_cquantize_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_cquantizer));
cinfo->cquantize = (struct jpeg_color_quantizer *) cquantize;
cquantize->pub.start_pass = start_pass_1_quant;
cquantize->pub.finish_pass = finish_pass_1_quant;
/* Make sure my internal arrays won't overflow */
if (cinfo->out_color_components > MAX_Q_COMPS)
ERREXIT1(cinfo, JERR_QUANT_COMPONENTS, MAX_Q_COMPS);
/* Make sure colormap indexes can be represented by JSAMPLEs */
if (cinfo->desired_number_of_colors > (MAXJSAMPLE+1))
ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, MAXJSAMPLE+1);
/* Install my colormap. */
cinfo->colormap = cquantize->sv_colormap;
cinfo->actual_number_of_colors = cquantize->sv_actual;
/* Initialize for desired dithering mode. */
switch (cinfo->dither_mode) {
@ -730,28 +762,95 @@ jinit_1pass_quantizer (j_decompress_ptr cinfo)
else
cquantize->pub.color_quantize = quantize_ord_dither;
cquantize->row_index = 0; /* initialize state for ordered dither */
/* If user changed to ordered dither from another mode,
* we must recreate the color index table with padding.
* This will cost extra space, but probably isn't very likely.
*/
if (! cquantize->is_padded)
create_colorindex(cinfo);
/* Create ordered-dither tables if we didn't already. */
if (cquantize->odither[0] == NULL)
create_odither_tables(cinfo);
break;
case JDITHER_FS:
cquantize->pub.color_quantize = quantize_fs_dither;
cquantize->on_odd_row = FALSE; /* initialize state for F-S dither */
/* Allocate Floyd-Steinberg workspace if necessary. */
/* We do this now since it is FAR storage and may affect the memory */
/* manager's space calculations. */
/* Allocate Floyd-Steinberg workspace if didn't already. */
if (cquantize->fserrors[0] == NULL)
alloc_fs_workspace(cinfo);
/* Initialize the propagated errors to zero. */
arraysize = (size_t) ((cinfo->output_width + 2) * SIZEOF(FSERROR));
for (i = 0; i < cinfo->out_color_components; i++) {
cquantize->fserrors[i] = (FSERRPTR) (*cinfo->mem->alloc_large)
((j_common_ptr) cinfo, JPOOL_IMAGE, arraysize);
/* Initialize the propagated errors to zero. */
for (i = 0; i < cinfo->out_color_components; i++)
jzero_far((void FAR *) cquantize->fserrors[i], arraysize);
}
break;
default:
ERREXIT(cinfo, JERR_NOT_COMPILED);
break;
}
}
/* Create the colormap. */
/*
* Finish up at the end of the pass.
*/
METHODDEF void
finish_pass_1_quant (j_decompress_ptr cinfo)
{
/* no work in 1-pass case */
}
/*
* Switch to a new external colormap between output passes.
* Shouldn't get to this module!
*/
METHODDEF void
new_color_map_1_quant (j_decompress_ptr cinfo)
{
ERREXIT(cinfo, JERR_MODE_CHANGE);
}
/*
* Module initialization routine for 1-pass color quantization.
*/
GLOBAL void
jinit_1pass_quantizer (j_decompress_ptr cinfo)
{
my_cquantize_ptr cquantize;
cquantize = (my_cquantize_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_cquantizer));
cinfo->cquantize = (struct jpeg_color_quantizer *) cquantize;
cquantize->pub.start_pass = start_pass_1_quant;
cquantize->pub.finish_pass = finish_pass_1_quant;
cquantize->pub.new_color_map = new_color_map_1_quant;
cquantize->fserrors[0] = NULL; /* Flag FS workspace not allocated */
cquantize->odither[0] = NULL; /* Also flag odither arrays not allocated */
/* Make sure my internal arrays won't overflow */
if (cinfo->out_color_components > MAX_Q_COMPS)
ERREXIT1(cinfo, JERR_QUANT_COMPONENTS, MAX_Q_COMPS);
/* Make sure colormap indexes can be represented by JSAMPLEs */
if (cinfo->desired_number_of_colors > (MAXJSAMPLE+1))
ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, MAXJSAMPLE+1);
/* Create the colormap and color index table. */
create_colormap(cinfo);
create_colorindex(cinfo);
/* Allocate Floyd-Steinberg workspace now if requested.
* We do this now since it is FAR storage and may affect the memory
* manager's space calculations. If the user changes to FS dither
* mode in a later pass, we will allocate the space then, and will
* possibly overrun the max_memory_to_use setting.
*/
if (cinfo->dither_mode == JDITHER_FS)
alloc_fs_workspace(cinfo);
}
#endif /* QUANT_1PASS_SUPPORTED */

139
jquant2.c
View File

@ -1,7 +1,7 @@
/*
* jquant2.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -193,9 +193,15 @@ typedef FSERROR FAR *FSERRPTR; /* pointer to error array (in FAR storage!) */
typedef struct {
struct jpeg_color_quantizer pub; /* public fields */
/* Space for the eventually created colormap is stashed here */
JSAMPARRAY sv_colormap; /* colormap allocated at init time */
int desired; /* desired # of colors = size of colormap */
/* Variables for accumulating image statistics */
hist3d histogram; /* pointer to the histogram */
boolean needs_zeroed; /* TRUE if next pass must zero histogram */
/* Variables for Floyd-Steinberg dithering */
FSERRPTR fserrors; /* accumulated errors */
boolean on_odd_row; /* flag to remember which row we are on */
@ -530,17 +536,16 @@ compute_color (j_decompress_ptr cinfo, boxptr boxp, int icolor)
LOCAL void
select_colors (j_decompress_ptr cinfo)
select_colors (j_decompress_ptr cinfo, int desired_colors)
/* Master routine for color selection */
{
boxptr boxlist;
int numboxes;
int desired = cinfo->desired_number_of_colors;
int i;
/* Allocate workspace for box list */
boxlist = (boxptr) (*cinfo->mem->alloc_small)
((j_common_ptr) cinfo, JPOOL_IMAGE, desired * SIZEOF(box));
((j_common_ptr) cinfo, JPOOL_IMAGE, desired_colors * SIZEOF(box));
/* Initialize one box containing whole space */
numboxes = 1;
boxlist[0].c0min = 0;
@ -552,7 +557,7 @@ select_colors (j_decompress_ptr cinfo)
/* Shrink it to actually-used volume and set its statistics */
update_box(cinfo, & boxlist[0]);
/* Perform median-cut to produce final box list */
numboxes = median_cut(cinfo, boxlist, numboxes, desired);
numboxes = median_cut(cinfo, boxlist, numboxes, desired_colors);
/* Compute the representative color for each box, fill colormap */
for (i = 0; i < numboxes; i++)
compute_color(cinfo, & boxlist[i], i);
@ -1137,8 +1142,13 @@ init_error_limit (j_decompress_ptr cinfo)
METHODDEF void
finish_pass1 (j_decompress_ptr cinfo)
{
my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
/* Select the representative colors and fill in cinfo->colormap */
select_colors(cinfo);
cinfo->colormap = cquantize->sv_colormap;
select_colors(cinfo, cquantize->desired);
/* Force next pass to zero the color index table */
cquantize->needs_zeroed = TRUE;
}
@ -1160,10 +1170,16 @@ start_pass_2_quant (j_decompress_ptr cinfo, boolean is_pre_scan)
hist3d histogram = cquantize->histogram;
int i;
/* Only F-S dithering or no dithering is supported. */
/* If user asks for ordered dither, give him F-S. */
if (cinfo->dither_mode != JDITHER_NONE)
cinfo->dither_mode = JDITHER_FS;
if (is_pre_scan) {
/* Set up method pointers */
cquantize->pub.color_quantize = prescan_quantize;
cquantize->pub.finish_pass = finish_pass1;
cquantize->needs_zeroed = TRUE; /* Always zero histogram */
} else {
/* Set up method pointers */
if (cinfo->dither_mode == JDITHER_FS)
@ -1171,15 +1187,55 @@ start_pass_2_quant (j_decompress_ptr cinfo, boolean is_pre_scan)
else
cquantize->pub.color_quantize = pass2_no_dither;
cquantize->pub.finish_pass = finish_pass2;
/* Make sure color count is acceptable */
i = cinfo->actual_number_of_colors;
if (i < 1)
ERREXIT1(cinfo, JERR_QUANT_FEW_COLORS, 1);
if (i > MAXNUMCOLORS)
ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, MAXNUMCOLORS);
if (cinfo->dither_mode == JDITHER_FS) {
size_t arraysize = (size_t) ((cinfo->output_width + 2) *
(3 * SIZEOF(FSERROR)));
/* Allocate Floyd-Steinberg workspace if we didn't already. */
if (cquantize->fserrors == NULL)
cquantize->fserrors = (FSERRPTR) (*cinfo->mem->alloc_large)
((j_common_ptr) cinfo, JPOOL_IMAGE, arraysize);
/* Initialize the propagated errors to zero. */
jzero_far((void FAR *) cquantize->fserrors, arraysize);
/* Make the error-limit table if we didn't already. */
if (cquantize->error_limiter == NULL)
init_error_limit(cinfo);
cquantize->on_odd_row = FALSE;
}
}
/* Zero the histogram or inverse color map */
for (i = 0; i < HIST_C0_ELEMS; i++) {
jzero_far((void FAR *) histogram[i],
HIST_C1_ELEMS*HIST_C2_ELEMS * SIZEOF(histcell));
/* Zero the histogram or inverse color map, if necessary */
if (cquantize->needs_zeroed) {
for (i = 0; i < HIST_C0_ELEMS; i++) {
jzero_far((void FAR *) histogram[i],
HIST_C1_ELEMS*HIST_C2_ELEMS * SIZEOF(histcell));
}
cquantize->needs_zeroed = FALSE;
}
}
/*
* Switch to a new external colormap between output passes.
*/
METHODDEF void
new_color_map_2_quant (j_decompress_ptr cinfo)
{
my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
/* Reset the inverse color map */
cquantize->needs_zeroed = TRUE;
}
/*
* Module initialization routine for 2-pass color quantization.
*/
@ -1195,26 +1251,14 @@ jinit_2pass_quantizer (j_decompress_ptr cinfo)
SIZEOF(my_cquantizer));
cinfo->cquantize = (struct jpeg_color_quantizer *) cquantize;
cquantize->pub.start_pass = start_pass_2_quant;
cquantize->pub.new_color_map = new_color_map_2_quant;
cquantize->fserrors = NULL; /* flag optional arrays not allocated */
cquantize->error_limiter = NULL;
/* Make sure jdmaster didn't give me a case I can't handle */
if (cinfo->out_color_components != 3)
ERREXIT(cinfo, JERR_NOTIMPL);
/* Only F-S dithering or no dithering is supported. */
/* If user asks for ordered dither, give him F-S. */
if (cinfo->dither_mode != JDITHER_NONE)
cinfo->dither_mode = JDITHER_FS;
/* Make sure color count is acceptable */
i = (cinfo->colormap != NULL) ? cinfo->actual_number_of_colors
: cinfo->desired_number_of_colors;
/* Lower bound on # of colors ... somewhat arbitrary as long as > 0 */
if (i < 8)
ERREXIT1(cinfo, JERR_QUANT_FEW_COLORS, 8);
/* Make sure colormap indexes can be represented by JSAMPLEs */
if (i > MAXNUMCOLORS)
ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, MAXNUMCOLORS);
/* Allocate the histogram/inverse colormap storage */
cquantize->histogram = (hist3d) (*cinfo->mem->alloc_small)
((j_common_ptr) cinfo, JPOOL_IMAGE, HIST_C0_ELEMS * SIZEOF(hist2d));
@ -1223,29 +1267,42 @@ jinit_2pass_quantizer (j_decompress_ptr cinfo)
((j_common_ptr) cinfo, JPOOL_IMAGE,
HIST_C1_ELEMS*HIST_C2_ELEMS * SIZEOF(histcell));
}
cquantize->needs_zeroed = TRUE; /* histogram is garbage now */
/* Allocate storage for the completed colormap,
* unless it has been supplied by the application.
/* Allocate storage for the completed colormap, if required.
* We do this now since it is FAR storage and may affect
* the memory manager's space calculations.
*/
if (cinfo->colormap == NULL) {
cinfo->colormap = (*cinfo->mem->alloc_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
(JDIMENSION) cinfo->desired_number_of_colors, (JDIMENSION) 3);
}
if (cinfo->enable_2pass_quant) {
/* Make sure color count is acceptable */
int desired = cinfo->desired_number_of_colors;
/* Lower bound on # of colors ... somewhat arbitrary as long as > 0 */
if (desired < 8)
ERREXIT1(cinfo, JERR_QUANT_FEW_COLORS, 8);
/* Make sure colormap indexes can be represented by JSAMPLEs */
if (desired > MAXNUMCOLORS)
ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, MAXNUMCOLORS);
cquantize->sv_colormap = (*cinfo->mem->alloc_sarray)
((j_common_ptr) cinfo,JPOOL_IMAGE, (JDIMENSION) desired, (JDIMENSION) 3);
cquantize->desired = desired;
} else
cquantize->sv_colormap = NULL;
/* Allocate Floyd-Steinberg workspace if necessary. */
/* This isn't needed until pass 2, but again it is FAR storage. */
/* Only F-S dithering or no dithering is supported. */
/* If user asks for ordered dither, give him F-S. */
if (cinfo->dither_mode != JDITHER_NONE)
cinfo->dither_mode = JDITHER_FS;
/* Allocate Floyd-Steinberg workspace if necessary.
* This isn't really needed until pass 2, but again it is FAR storage.
* Although we will cope with a later change in dither_mode,
* we do not promise to honor max_memory_to_use if dither_mode changes.
*/
if (cinfo->dither_mode == JDITHER_FS) {
size_t arraysize = (size_t) ((cinfo->output_width + 2) *
(3 * SIZEOF(FSERROR)));
cquantize->fserrors = (FSERRPTR) (*cinfo->mem->alloc_large)
((j_common_ptr) cinfo, JPOOL_IMAGE, arraysize);
/* Initialize the propagated errors to zero. */
jzero_far((void FAR *) cquantize->fserrors, arraysize);
cquantize->on_odd_row = FALSE;
((j_common_ptr) cinfo, JPOOL_IMAGE,
(size_t) ((cinfo->output_width + 2) * (3 * SIZEOF(FSERROR))));
/* Might as well create the error-limiting table too. */
init_error_limit(cinfo);
}
}

52
jutils.c
View File

@ -1,12 +1,12 @@
/*
* jutils.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains miscellaneous utility routines needed for both
* compression and decompression.
* This file contains tables and miscellaneous utility routines needed
* for both compression and decompression.
* Note we prefix all global names with "j" to minimize conflicts with
* a surrounding application.
*/
@ -16,6 +16,50 @@
#include "jpeglib.h"
/*
* jpeg_zigzag_order[i] is the zigzag-order position of the i'th element
* of a DCT block read in natural order (left to right, top to bottom).
*/
const int jpeg_zigzag_order[DCTSIZE2] = {
0, 1, 5, 6, 14, 15, 27, 28,
2, 4, 7, 13, 16, 26, 29, 42,
3, 8, 12, 17, 25, 30, 41, 43,
9, 11, 18, 24, 31, 40, 44, 53,
10, 19, 23, 32, 39, 45, 52, 54,
20, 22, 33, 38, 46, 51, 55, 60,
21, 34, 37, 47, 50, 56, 59, 61,
35, 36, 48, 49, 57, 58, 62, 63
};
/*
* jpeg_natural_order[i] is the natural-order position of the i'th element
* of zigzag order.
*
* When reading corrupted data, the Huffman decoders could attempt
* to reference an entry beyond the end of this array (if the decoded
* zero run length reaches past the end of the block). To prevent
* wild stores without adding an inner-loop test, we put some extra
* "63"s after the real entries. This will cause the extra coefficient
* to be stored in location 63 of the block, not somewhere random.
* The worst case would be a run-length of 15, which means we need 16
* fake entries.
*/
const int jpeg_natural_order[DCTSIZE2+16] = {
0, 1, 8, 16, 9, 2, 3, 10,
17, 24, 32, 25, 18, 11, 4, 5,
12, 19, 26, 33, 40, 48, 41, 34,
27, 20, 13, 6, 7, 14, 21, 28,
35, 42, 49, 56, 57, 50, 43, 36,
29, 22, 15, 23, 30, 37, 44, 51,
58, 59, 52, 45, 38, 31, 39, 46,
53, 60, 61, 54, 47, 55, 62, 63,
63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */
63, 63, 63, 63, 63, 63, 63, 63
};
/*
* Arithmetic utilities
*/
@ -116,7 +160,7 @@ jcopy_block_row (JBLOCKROW input_row, JBLOCKROW output_row,
GLOBAL void
jzero_far (void FAR * target, size_t bytestozero)
/* Zero out a chunk of FAR memory. */
/* This might be sample-array data, block-array data, or alloc_medium data. */
/* This might be sample-array data, block-array data, or alloc_large data. */
{
#ifdef FMEMZERO
FMEMZERO(target, bytestozero);

2
jversion.h
View File

@ -9,6 +9,6 @@
*/
#define JVERSION "5b 15-Mar-95"
#define JVERSION "6 2-Aug-95"
#define JCOPYRIGHT "Copyright (C) 1995, Thomas G. Lane"

799
libjpeg.doc
View File

File diff suppressed because it is too large Load Diff

2
makcjpeg.st
View File

@ -23,6 +23,8 @@ cjpeg.ttp
; * * * * List of modules * * * *
PCSTART.O
cjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h,jversion.h)
cdjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)
rdswitch.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)
rdppm.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)
rdgif.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)
rdtarga.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)

1
makdjpeg.st
View File

@ -23,6 +23,7 @@ djpeg.ttp
; * * * * List of modules * * * *
PCSTART.O
djpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h,jversion.h)
cdjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)
rdcolmap.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)
wrppm.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)
wrgif.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)

208
makefile.ansi
View File

@ -38,52 +38,61 @@ AR2= ranlib
# source files: JPEG library proper
LIBSOURCES= jcapi.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c jcmainct.c \
jcmarker.c jcmaster.c jcomapi.c jcparam.c jcprepct.c jcsample.c \
jdapi.c jdatasrc.c jdatadst.c jdcoefct.c jdcolor.c jddctmgr.c \
jdhuff.c jdmainct.c jdmarker.c jdmaster.c jdpostct.c jdsample.c \
jerror.c jutils.c jfdctfst.c jfdctflt.c jfdctint.c jidctfst.c \
jidctflt.c jidctint.c jidctred.c jquant1.c jquant2.c jdmerge.c \
jmemmgr.c jmemansi.c jmemname.c jmemnobs.c jmemdos.c
# source files: cjpeg/djpeg applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c rdcolmap.c rdppm.c wrppm.c rdgif.c wrgif.c \
rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c rdjpgcom.c \
wrjpgcom.c
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c \
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c \
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c \
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
jpeglib.h jversion.h cdjpeg.h cderror.h
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 rdjpgcom.1 wrjpgcom.1 \
example.c libjpeg.doc structure.doc coderules.doc filelist.doc \
change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.manx \
makefile.sas makcjpeg.st makdjpeg.st makljpeg.st makefile.bcc \
makefile.mc6 makefile.dj makefile.mms makefile.vms makvms.opt
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st \
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms \
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc \
jconfig.mc6 jconfig.dj jconfig.vms
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg \
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapi.o jcparam.o jdatadst.o jcmaster.o jcmarker.o jcmainct.o \
jcprepct.o jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o \
jfdctfst.o jfdctflt.o jfdctint.o
CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \
jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \
jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \
jfdctint.o
# decompression library object files
DLIBOBJECTS= jdapi.o jdatasrc.o jdmaster.o jdmarker.o jdmainct.o jdcoefct.o \
DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \
jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \
jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \
jdhuff.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
# These objectfiles are included in libjpeg.a
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for cjpeg and djpeg applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \
cdjpeg.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \
cdjpeg.o
TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o
all: libjpeg.a cjpeg djpeg rdjpgcom wrjpgcom
all: libjpeg.a cjpeg djpeg jpegtran rdjpgcom wrjpgcom
libjpeg.a: $(LIBOBJECTS)
$(RM) libjpeg.a
@ -96,6 +105,9 @@ cjpeg: $(COBJECTS) libjpeg.a
djpeg: $(DOBJECTS) libjpeg.a
$(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.a $(LDLIBS)
jpegtran: $(TROBJECTS) libjpeg.a
$(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.a $(LDLIBS)
rdjpgcom: rdjpgcom.o
$(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS)
@ -108,71 +120,89 @@ jconfig.h: jconfig.doc
exit 1
clean:
$(RM) *.o cjpeg djpeg libjpeg.a rdjpgcom wrjpgcom core testout.*
$(RM) *.o cjpeg djpeg jpegtran libjpeg.a rdjpgcom wrjpgcom
$(RM) core testout*
test: cjpeg djpeg
$(RM) testout.ppm testout.gif testout.jpg
test: cjpeg djpeg jpegtran
$(RM) testout*
./djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
./djpeg -dct int -gif -outfile testout.gif testorig.jpg
./cjpeg -dct int -outfile testout.jpg testimg.ppm
./djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
./cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
./jpegtran -outfile testoutt.jpg testprog.jpg
cmp testimg.ppm testout.ppm
cmp testimg.gif testout.gif
cmp testimg.jpg testout.jpg
cmp testimg.ppm testoutp.ppm
cmp testimgp.jpg testoutp.jpg
cmp testorig.jpg testoutt.jpg
jcapi.o : jcapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcprepct.o : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapi.o : jdapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatasrc.o : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatadst.o : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdpostct.o : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jutils.o : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jfdctfst.o : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctflt.o : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
rdcolmap.o : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdppm.o : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o : rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o : wrjpgcom.c jinclude.h jconfig.h
jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.o: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.o: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h
rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h

229
makefile.bcc
View File

@ -63,66 +63,75 @@ SYSDEPMEMLIB= +jmemnobs.obj
# source files: JPEG library proper
LIBSOURCES= jcapi.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c jcmainct.c \
jcmarker.c jcmaster.c jcomapi.c jcparam.c jcprepct.c jcsample.c \
jdapi.c jdatasrc.c jdatadst.c jdcoefct.c jdcolor.c jddctmgr.c \
jdhuff.c jdmainct.c jdmarker.c jdmaster.c jdpostct.c jdsample.c \
jerror.c jutils.c jfdctfst.c jfdctflt.c jfdctint.c jidctfst.c \
jidctflt.c jidctint.c jidctred.c jquant1.c jquant2.c jdmerge.c \
jmemmgr.c jmemansi.c jmemname.c jmemnobs.c jmemdos.c
# source files: cjpeg/djpeg applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c rdcolmap.c rdppm.c wrppm.c rdgif.c wrgif.c \
rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c rdjpgcom.c \
wrjpgcom.c
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c \
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c \
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c \
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
jpeglib.h jversion.h cdjpeg.h cderror.h
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 rdjpgcom.1 wrjpgcom.1 \
example.c libjpeg.doc structure.doc coderules.doc filelist.doc \
change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.manx \
makefile.sas makcjpeg.st makdjpeg.st makljpeg.st makefile.bcc \
makefile.mc6 makefile.dj makefile.mms makefile.vms makvms.opt
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st \
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms \
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc \
jconfig.mc6 jconfig.dj jconfig.vms
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg \
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapi.obj jcparam.obj jdatadst.obj jcmaster.obj jcmarker.obj \
jcmainct.obj jcprepct.obj jccoefct.obj jccolor.obj jcsample.obj \
jchuff.obj jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj
CLIBOBJECTS= jcapimin.obj jcapistd.obj jctrans.obj jcparam.obj jdatadst.obj \
jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj jcprepct.obj \
jccoefct.obj jccolor.obj jcsample.obj jchuff.obj jcphuff.obj \
jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj
# decompression library object files
DLIBOBJECTS= jdapi.obj jdatasrc.obj jdmaster.obj jdmarker.obj jdmainct.obj \
jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj jidctflt.obj \
jidctint.obj jidctred.obj jdhuff.obj jdsample.obj jdcolor.obj \
DLIBOBJECTS= jdapimin.obj jdapistd.obj jdtrans.obj jdatasrc.obj \
jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdphuff.obj \
jdmainct.obj jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj \
jidctflt.obj jidctint.obj jidctred.obj jdsample.obj jdcolor.obj \
jquant1.obj jquant2.obj jdmerge.obj
# These objectfiles are included in libjpeg.lib
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for cjpeg and djpeg applications (excluding library files)
COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \
rdswitch.obj cdjpeg.obj
DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \
rdcolmap.obj
rdcolmap.obj cdjpeg.obj
TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj
all: libjpeg.lib cjpeg.exe djpeg.exe rdjpgcom.exe wrjpgcom.exe
all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe
libjpeg.lib: $(LIBOBJECTS)
- del libjpeg.lib
tlib libjpeg.lib /E /C @&&|
+jcapi.obj +jcparam.obj +jdatadst.obj +jcmaster.obj +jcmarker.obj &
+jcmainct.obj +jcprepct.obj +jccoefct.obj +jccolor.obj +jcsample.obj &
+jchuff.obj +jcdctmgr.obj +jfdctfst.obj +jfdctflt.obj +jfdctint.obj &
+jdapi.obj +jdatasrc.obj +jdmaster.obj +jdmarker.obj +jdmainct.obj &
+jdcoefct.obj +jdpostct.obj +jddctmgr.obj +jidctfst.obj +jidctflt.obj &
+jidctint.obj +jidctred.obj +jdhuff.obj +jdsample.obj +jdcolor.obj &
+jquant1.obj +jquant2.obj +jdmerge.obj +jcomapi.obj +jutils.obj &
+jerror.obj +jmemmgr.obj &
+jcapimin.obj +jcapistd.obj +jctrans.obj +jcparam.obj +jdatadst.obj &
+jcinit.obj +jcmaster.obj +jcmarker.obj +jcmainct.obj +jcprepct.obj &
+jccoefct.obj +jccolor.obj +jcsample.obj +jchuff.obj +jcphuff.obj &
+jcdctmgr.obj +jfdctfst.obj +jfdctflt.obj +jfdctint.obj +jdapimin.obj &
+jdapistd.obj +jdtrans.obj +jdatasrc.obj +jdmaster.obj +jdinput.obj &
+jdmarker.obj +jdhuff.obj +jdphuff.obj +jdmainct.obj +jdcoefct.obj &
+jdpostct.obj +jddctmgr.obj +jidctfst.obj +jidctflt.obj +jidctint.obj &
+jidctred.obj +jdsample.obj +jdcolor.obj +jquant1.obj +jquant2.obj &
+jdmerge.obj +jcomapi.obj +jutils.obj +jerror.obj +jmemmgr.obj &
$(SYSDEPMEMLIB)
|
@ -132,6 +141,9 @@ cjpeg.exe: $(COBJECTS) libjpeg.lib
djpeg.exe: $(DOBJECTS) libjpeg.lib
$(CC) $(LDFLAGS) -edjpeg.exe $(DOBJECTS) libjpeg.lib
jpegtran.exe: $(TROBJECTS) libjpeg.lib
$(CC) $(LDFLAGS) -ejpegtran.exe $(TROBJECTS) libjpeg.lib
rdjpgcom.exe: rdjpgcom.c
!if $d(DOS)
$(CC) -ms -O rdjpgcom.c
@ -162,83 +174,104 @@ clean:
- del libjpeg.lib
- del cjpeg.exe
- del djpeg.exe
- del jpegtran.exe
- del rdjpgcom.exe
- del wrjpgcom.exe
- del testout.*
- del testout*.*
test: cjpeg.exe djpeg.exe
- del testout.*
test: cjpeg.exe djpeg.exe jpegtran.exe
- del testout*.*
djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
djpeg -dct int -gif -outfile testout.gif testorig.jpg
cjpeg -dct int -outfile testout.jpg testimg.ppm
djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
jpegtran -outfile testoutt.jpg testprog.jpg
!if $d(DOS)
fc /b testimg.ppm testout.ppm
fc /b testimg.gif testout.gif
fc /b testimg.jpg testout.jpg
fc /b testimg.ppm testoutp.ppm
fc /b testimgp.jpg testoutp.jpg
fc /b testorig.jpg testoutt.jpg
!else
echo n > n.tmp
comp testimg.ppm testout.ppm < n.tmp
comp testimg.gif testout.gif < n.tmp
comp testimg.jpg testout.jpg < n.tmp
comp testimg.ppm testoutp.ppm < n.tmp
comp testimgp.jpg testoutp.jpg < n.tmp
comp testorig.jpg testoutt.jpg < n.tmp
del n.tmp
!endif
jcapi.obj : jcapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.obj : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.obj : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.obj : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.obj : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.obj : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.obj : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.obj : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.obj : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.obj : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcprepct.obj : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.obj : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapi.obj : jdapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatasrc.obj : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatadst.obj : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.obj : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.obj : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.obj : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.obj : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.obj : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.obj : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.obj : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdpostct.obj : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.obj : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.obj : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jutils.obj : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jfdctfst.obj : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctflt.obj : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.obj : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.obj : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.obj : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.obj : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.obj : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.obj : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.obj : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.obj : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.obj : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.obj : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.obj : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.obj : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.obj : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.obj : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.obj : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
rdcolmap.obj : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdppm.obj : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.obj : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.obj : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.obj : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.obj : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.obj : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.obj : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.obj : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.obj : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.obj : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.obj : rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.obj : wrjpgcom.c jinclude.h jconfig.h
jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.obj: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.obj: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.obj: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.obj: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.obj: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.obj: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.obj: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.obj: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.obj: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.obj: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.obj: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.obj: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.obj: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.obj: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.obj: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.obj: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.obj: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.obj: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.obj: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.obj: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.obj: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.obj: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.obj: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.obj: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.obj: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.obj: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.obj: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.obj: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.obj: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.obj: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.obj: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.obj: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.obj: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.obj: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.obj: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.obj: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.obj: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.obj: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.obj: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.obj: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.h
rdppm.obj: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.obj: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.obj: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.obj: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.obj: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.obj: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.obj: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.obj: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.obj: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.obj: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
jmemdosa.obj : jmemdosa.asm
tasm /mx jmemdosa.asm

213
makefile.cfg
View File

@ -61,52 +61,61 @@ INSTALL_DATA= @INSTALL_DATA@
# source files: JPEG library proper
LIBSOURCES= jcapi.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c jcmainct.c \
jcmarker.c jcmaster.c jcomapi.c jcparam.c jcprepct.c jcsample.c \
jdapi.c jdatasrc.c jdatadst.c jdcoefct.c jdcolor.c jddctmgr.c \
jdhuff.c jdmainct.c jdmarker.c jdmaster.c jdpostct.c jdsample.c \
jerror.c jutils.c jfdctfst.c jfdctflt.c jfdctint.c jidctfst.c \
jidctflt.c jidctint.c jidctred.c jquant1.c jquant2.c jdmerge.c \
jmemmgr.c jmemansi.c jmemname.c jmemnobs.c jmemdos.c
# source files: cjpeg/djpeg applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c rdcolmap.c rdppm.c wrppm.c rdgif.c wrgif.c \
rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c rdjpgcom.c \
wrjpgcom.c
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c \
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c \
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c \
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
jpeglib.h jversion.h cdjpeg.h cderror.h
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 rdjpgcom.1 wrjpgcom.1 \
example.c libjpeg.doc structure.doc coderules.doc filelist.doc \
change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.manx \
makefile.sas makcjpeg.st makdjpeg.st makljpeg.st makefile.bcc \
makefile.mc6 makefile.dj makefile.mms makefile.vms makvms.opt
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st \
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms \
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc \
jconfig.mc6 jconfig.dj jconfig.vms
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg \
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapi.o jcparam.o jdatadst.o jcmaster.o jcmarker.o jcmainct.o \
jcprepct.o jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o \
jfdctfst.o jfdctflt.o jfdctint.o
CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \
jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \
jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \
jfdctint.o
# decompression library object files
DLIBOBJECTS= jdapi.o jdatasrc.o jdmaster.o jdmarker.o jdmainct.o jdcoefct.o \
DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \
jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \
jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \
jdhuff.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
# These objectfiles are included in libjpeg.a
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for cjpeg and djpeg applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \
cdjpeg.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \
cdjpeg.o
TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o
all: @ANSI2KNR@ libjpeg.a cjpeg djpeg rdjpgcom wrjpgcom
all: @ANSI2KNR@ libjpeg.a cjpeg djpeg jpegtran rdjpgcom wrjpgcom
# This rule causes ansi2knr to be invoked.
@ISANSICOM@.c.o:
@ -129,6 +138,9 @@ cjpeg: $(COBJECTS) libjpeg.a
djpeg: $(DOBJECTS) libjpeg.a
$(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.a $(LDLIBS)
jpegtran: $(TROBJECTS) libjpeg.a
$(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.a $(LDLIBS)
rdjpgcom: rdjpgcom.o
$(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS)
@ -140,13 +152,15 @@ jconfig.h: jconfig.doc
echo Please read the installation directions in install.doc.
exit 1
install: cjpeg djpeg rdjpgcom wrjpgcom
install: cjpeg djpeg jpegtran rdjpgcom wrjpgcom
$(INSTALL_PROGRAM) cjpeg $(bindir)/$(binprefix)cjpeg
$(INSTALL_PROGRAM) djpeg $(bindir)/$(binprefix)djpeg
$(INSTALL_PROGRAM) jpegtran $(bindir)/$(binprefix)jpegtran
$(INSTALL_PROGRAM) rdjpgcom $(bindir)/$(binprefix)rdjpgcom
$(INSTALL_PROGRAM) wrjpgcom $(bindir)/$(binprefix)wrjpgcom
$(INSTALL_DATA) $(srcdir)/cjpeg.1 $(mandir)/$(manprefix)cjpeg.$(manext)
$(INSTALL_DATA) $(srcdir)/djpeg.1 $(mandir)/$(manprefix)djpeg.$(manext)
$(INSTALL_DATA) $(srcdir)/jpegtran.1 $(mandir)/$(manprefix)jpegtran.$(manext)
$(INSTALL_DATA) $(srcdir)/rdjpgcom.1 $(mandir)/$(manprefix)rdjpgcom.$(manext)
$(INSTALL_DATA) $(srcdir)/wrjpgcom.1 $(mandir)/$(manprefix)wrjpgcom.$(manext)
@ -160,22 +174,28 @@ install-headers: jconfig.h
$(INSTALL_DATA) $(srcdir)/jerror.h $(includedir)/jerror.h
clean:
$(RM) *.o cjpeg djpeg libjpeg.a rdjpgcom wrjpgcom ansi2knr
$(RM) core testout.* config.log config.status
$(RM) *.o cjpeg djpeg jpegtran libjpeg.a rdjpgcom wrjpgcom
$(RM) ansi2knr core testout* config.log config.status
distribute:
$(RM) jpegsrc.tar*
tar cvf jpegsrc.tar $(DISTFILES)
compress -v jpegsrc.tar
test: cjpeg djpeg
$(RM) testout.ppm testout.gif testout.jpg
test: cjpeg djpeg jpegtran
$(RM) testout*
./djpeg -dct int -ppm -outfile testout.ppm $(srcdir)/testorig.jpg
./djpeg -dct int -gif -outfile testout.gif $(srcdir)/testorig.jpg
./cjpeg -dct int -outfile testout.jpg $(srcdir)/testimg.ppm
./djpeg -dct int -ppm -outfile testoutp.ppm $(srcdir)/testprog.jpg
./cjpeg -dct int -progressive -opt -outfile testoutp.jpg $(srcdir)/testimg.ppm
./jpegtran -outfile testoutt.jpg $(srcdir)/testprog.jpg
cmp $(srcdir)/testimg.ppm testout.ppm
cmp $(srcdir)/testimg.gif testout.gif
cmp $(srcdir)/testimg.jpg testout.jpg
cmp $(srcdir)/testimg.ppm testoutp.ppm
cmp $(srcdir)/testimgp.jpg testoutp.jpg
cmp $(srcdir)/testorig.jpg testoutt.jpg
check: test
@ -183,59 +203,70 @@ check: test
.PHONY: all install install-lib install-headers clean distribute test check
jcapi.o : jcapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcprepct.o : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapi.o : jdapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatasrc.o : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatadst.o : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdpostct.o : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jutils.o : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jfdctfst.o : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctflt.o : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
rdcolmap.o : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdppm.o : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o : rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o : wrjpgcom.c jinclude.h jconfig.h
jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.o: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.o: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h
rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h

216
makefile.dj
View File

@ -7,7 +7,7 @@
# Read installation instructions before saying "make" !!
# To do "make standalone", you'll need to be sure this points to go32.exe:
GO32= d:/djgpp/bin/go32.exe
GO32= c:/djgpp/bin/go32.exe
# The name of your C compiler:
CC= gcc
@ -42,52 +42,61 @@ AR2= ranlib
# source files: JPEG library proper
LIBSOURCES= jcapi.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c jcmainct.c \
jcmarker.c jcmaster.c jcomapi.c jcparam.c jcprepct.c jcsample.c \
jdapi.c jdatasrc.c jdatadst.c jdcoefct.c jdcolor.c jddctmgr.c \
jdhuff.c jdmainct.c jdmarker.c jdmaster.c jdpostct.c jdsample.c \
jerror.c jutils.c jfdctfst.c jfdctflt.c jfdctint.c jidctfst.c \
jidctflt.c jidctint.c jidctred.c jquant1.c jquant2.c jdmerge.c \
jmemmgr.c jmemansi.c jmemname.c jmemnobs.c jmemdos.c
# source files: cjpeg/djpeg applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c rdcolmap.c rdppm.c wrppm.c rdgif.c wrgif.c \
rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c rdjpgcom.c \
wrjpgcom.c
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c \
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c \
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c \
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
jpeglib.h jversion.h cdjpeg.h cderror.h
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 rdjpgcom.1 wrjpgcom.1 \
example.c libjpeg.doc structure.doc coderules.doc filelist.doc \
change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.manx \
makefile.sas makcjpeg.st makdjpeg.st makljpeg.st makefile.bcc \
makefile.mc6 makefile.dj makefile.mms makefile.vms makvms.opt
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st \
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms \
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc \
jconfig.mc6 jconfig.dj jconfig.vms
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg \
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapi.o jcparam.o jdatadst.o jcmaster.o jcmarker.o jcmainct.o \
jcprepct.o jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o \
jfdctfst.o jfdctflt.o jfdctint.o
CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \
jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \
jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \
jfdctint.o
# decompression library object files
DLIBOBJECTS= jdapi.o jdatasrc.o jdmaster.o jdmarker.o jdmainct.o jdcoefct.o \
DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \
jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \
jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \
jdhuff.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
# These objectfiles are included in libjpeg.a
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for cjpeg and djpeg applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \
cdjpeg.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \
cdjpeg.o
TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o
all: libjpeg.a cjpeg djpeg rdjpgcom wrjpgcom
all: libjpeg.a cjpeg djpeg jpegtran rdjpgcom wrjpgcom
libjpeg.a: $(LIBOBJECTS)
$(RM) libjpeg.a
@ -100,21 +109,26 @@ cjpeg: $(COBJECTS) libjpeg.a
djpeg: $(DOBJECTS) libjpeg.a
$(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.a $(LDLIBS)
jpegtran: $(TROBJECTS) libjpeg.a
$(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.a $(LDLIBS)
rdjpgcom: rdjpgcom.o
$(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS)
wrjpgcom: wrjpgcom.o
$(LN) $(LDFLAGS) -o wrjpgcom wrjpgcom.o $(LDLIBS)
exe: cjpeg djpeg rdjpgcom wrjpgcom
exe: cjpeg djpeg jpegtran rdjpgcom wrjpgcom
coff2exe cjpeg
coff2exe djpeg
coff2exe jpegtran
coff2exe rdjpgcom
coff2exe wrjpgcom
standalone: cjpeg djpeg rdjpgcom wrjpgcom
standalone: cjpeg djpeg jpegtran rdjpgcom wrjpgcom
coff2exe -s $(GO32) cjpeg
coff2exe -s $(GO32) djpeg
coff2exe -s $(GO32) jpegtran
coff2exe -s $(GO32) rdjpgcom
coff2exe -s $(GO32) wrjpgcom
@ -127,74 +141,92 @@ clean:
$(RM) *.o
$(RM) cjpeg
$(RM) djpeg
$(RM) jpegtran
$(RM) rdjpgcom
$(RM) wrjpgcom
$(RM) libjpeg.a
$(RM) testout.*
$(RM) testout*.*
test: cjpeg djpeg
$(RM) testout.*
test: cjpeg djpeg jpegtran
$(RM) testout*.*
go32 djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
go32 djpeg -dct int -gif -outfile testout.gif testorig.jpg
go32 cjpeg -dct int -outfile testout.jpg testimg.ppm
go32 djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
go32 cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
go32 jpegtran -outfile testoutt.jpg testprog.jpg
fc /b testimg.ppm testout.ppm
fc /b testimg.gif testout.gif
fc /b testimg.jpg testout.jpg
fc /b testimg.ppm testoutp.ppm
fc /b testimgp.jpg testoutp.jpg
fc /b testorig.jpg testoutt.jpg
jcapi.o : jcapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcprepct.o : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapi.o : jdapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatasrc.o : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatadst.o : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdpostct.o : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jutils.o : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jfdctfst.o : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctflt.o : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
rdcolmap.o : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdppm.o : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o : rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o : wrjpgcom.c jinclude.h jconfig.h
jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.o: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.o: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h
rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h

208
makefile.manx
View File

@ -39,52 +39,61 @@ AR= lb
# source files: JPEG library proper
LIBSOURCES= jcapi.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c jcmainct.c \
jcmarker.c jcmaster.c jcomapi.c jcparam.c jcprepct.c jcsample.c \
jdapi.c jdatasrc.c jdatadst.c jdcoefct.c jdcolor.c jddctmgr.c \
jdhuff.c jdmainct.c jdmarker.c jdmaster.c jdpostct.c jdsample.c \
jerror.c jutils.c jfdctfst.c jfdctflt.c jfdctint.c jidctfst.c \
jidctflt.c jidctint.c jidctred.c jquant1.c jquant2.c jdmerge.c \
jmemmgr.c jmemansi.c jmemname.c jmemnobs.c jmemdos.c
# source files: cjpeg/djpeg applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c rdcolmap.c rdppm.c wrppm.c rdgif.c wrgif.c \
rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c rdjpgcom.c \
wrjpgcom.c
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c \
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c \
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c \
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
jpeglib.h jversion.h cdjpeg.h cderror.h
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 rdjpgcom.1 wrjpgcom.1 \
example.c libjpeg.doc structure.doc coderules.doc filelist.doc \
change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.manx \
makefile.sas makcjpeg.st makdjpeg.st makljpeg.st makefile.bcc \
makefile.mc6 makefile.dj makefile.mms makefile.vms makvms.opt
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st \
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms \
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc \
jconfig.mc6 jconfig.dj jconfig.vms
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg \
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapi.o jcparam.o jdatadst.o jcmaster.o jcmarker.o jcmainct.o \
jcprepct.o jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o \
jfdctfst.o jfdctflt.o jfdctint.o
CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \
jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \
jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \
jfdctint.o
# decompression library object files
DLIBOBJECTS= jdapi.o jdatasrc.o jdmaster.o jdmarker.o jdmainct.o jdcoefct.o \
DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \
jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \
jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \
jdhuff.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
# These objectfiles are included in libjpeg.lib
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for cjpeg and djpeg applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \
cdjpeg.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \
cdjpeg.o
TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o
all: libjpeg.lib cjpeg djpeg rdjpgcom wrjpgcom
all: libjpeg.lib cjpeg djpeg jpegtran rdjpgcom wrjpgcom
libjpeg.lib: $(LIBOBJECTS)
-$(RM) libjpeg.lib
@ -96,6 +105,9 @@ cjpeg: $(COBJECTS) libjpeg.lib
djpeg: $(DOBJECTS) libjpeg.lib
$(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.lib $(LDLIBS)
jpegtran: $(TROBJECTS) libjpeg.lib
$(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.lib $(LDLIBS)
rdjpgcom: rdjpgcom.o
$(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS)
@ -108,71 +120,89 @@ jconfig.h: jconfig.doc
exit 1
clean:
-$(RM) *.o cjpeg djpeg libjpeg.lib rdjpgcom wrjpgcom core testout.*
-$(RM) *.o cjpeg djpeg jpegtran libjpeg.lib rdjpgcom wrjpgcom
-$(RM) core testout*.*
test: cjpeg djpeg
-$(RM) testout.ppm testout.gif testout.jpg
test: cjpeg djpeg jpegtran
-$(RM) testout*.*
djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
djpeg -dct int -gif -outfile testout.gif testorig.jpg
cjpeg -dct int -outfile testout.jpg testimg.ppm
djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
jpegtran -outfile testoutt.jpg testprog.jpg
cmp testimg.ppm testout.ppm
cmp testimg.gif testout.gif
cmp testimg.jpg testout.jpg
cmp testimg.ppm testoutp.ppm
cmp testimgp.jpg testoutp.jpg
cmp testorig.jpg testoutt.jpg
jcapi.o : jcapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcprepct.o : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapi.o : jdapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatasrc.o : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatadst.o : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdpostct.o : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jutils.o : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jfdctfst.o : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctflt.o : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
rdcolmap.o : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdppm.o : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o : rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o : wrjpgcom.c jinclude.h jconfig.h
jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.o: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.o: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h
rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h

239
makefile.mc6
View File

@ -25,57 +25,65 @@ SYSDEPMEM= jmemdos.obj jmemdosa.obj
# source files: JPEG library proper
LIBSOURCES= jcapi.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c jcmainct.c \
jcmarker.c jcmaster.c jcomapi.c jcparam.c jcprepct.c jcsample.c \
jdapi.c jdatasrc.c jdatadst.c jdcoefct.c jdcolor.c jddctmgr.c \
jdhuff.c jdmainct.c jdmarker.c jdmaster.c jdpostct.c jdsample.c \
jerror.c jutils.c jfdctfst.c jfdctflt.c jfdctint.c jidctfst.c \
jidctflt.c jidctint.c jidctred.c jquant1.c jquant2.c jdmerge.c \
jmemmgr.c jmemansi.c jmemname.c jmemnobs.c jmemdos.c
# source files: cjpeg/djpeg applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c rdcolmap.c rdppm.c wrppm.c rdgif.c wrgif.c \
rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c rdjpgcom.c \
wrjpgcom.c
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c \
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c \
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c \
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
jpeglib.h jversion.h cdjpeg.h cderror.h
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 rdjpgcom.1 wrjpgcom.1 \
example.c libjpeg.doc structure.doc coderules.doc filelist.doc \
change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.manx \
makefile.sas makcjpeg.st makdjpeg.st makljpeg.st makefile.bcc \
makefile.mc6 makefile.dj makefile.mms makefile.vms makvms.opt
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st \
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms \
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc \
jconfig.mc6 jconfig.dj jconfig.vms
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg \
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapi.obj jcparam.obj jdatadst.obj jcmaster.obj jcmarker.obj \
jcmainct.obj jcprepct.obj jccoefct.obj jccolor.obj jcsample.obj \
jchuff.obj jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj
CLIBOBJECTS= jcapimin.obj jcapistd.obj jctrans.obj jcparam.obj jdatadst.obj \
jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj jcprepct.obj \
jccoefct.obj jccolor.obj jcsample.obj jchuff.obj jcphuff.obj \
jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj
# decompression library object files
DLIBOBJECTS= jdapi.obj jdatasrc.obj jdmaster.obj jdmarker.obj jdmainct.obj \
jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj jidctflt.obj \
jidctint.obj jidctred.obj jdhuff.obj jdsample.obj jdcolor.obj \
DLIBOBJECTS= jdapimin.obj jdapistd.obj jdtrans.obj jdatasrc.obj \
jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdphuff.obj \
jdmainct.obj jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj \
jidctflt.obj jidctint.obj jidctred.obj jdsample.obj jdcolor.obj \
jquant1.obj jquant2.obj jdmerge.obj
# These objectfiles are included in libjpeg.lib
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for cjpeg and djpeg applications (excluding library files)
COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \
rdswitch.obj cdjpeg.obj
DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \
rdcolmap.obj
rdcolmap.obj cdjpeg.obj
TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj
# need linker response file because file list > 128 chars
RFILE = libjpeg.ans
all: libjpeg.lib cjpeg.exe djpeg.exe rdjpgcom.exe wrjpgcom.exe
all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe
libjpeg.lib: $(LIBOBJECTS) $(RFILE)
del libjpeg.lib
@ -87,23 +95,32 @@ $(RFILE) : Makefile
echo libjpeg.lib >$(RFILE)
# silly want-to-create-it prompt:
echo y >>$(RFILE)
echo +jcapi.obj +jcparam.obj +jdatadst.obj +jcmaster.obj & >>$(RFILE)
echo +jcmarker.obj +jcmainct.obj +jcprepct.obj & >>$(RFILE)
echo +jccoefct.obj +jccolor.obj +jcsample.obj +jchuff.obj & >>$(RFILE)
echo +jcapimin.obj +jcapistd.obj +jctrans.obj +jcparam.obj & >>$(RFILE)
echo +jdatadst.obj +jcinit.obj +jcmaster.obj +jcmarker.obj & >>$(RFILE)
echo +jcmainct.obj +jcprepct.obj +jccoefct.obj & >>$(RFILE)
echo +jccolor.obj +jcsample.obj +jchuff.obj +jcphuff.obj & >>$(RFILE)
echo +jcdctmgr.obj +jfdctfst.obj +jfdctflt.obj & >>$(RFILE)
echo +jfdctint.obj +jdapi.obj +jdatasrc.obj +jdmaster.obj & >>$(RFILE)
echo +jdmarker.obj +jdmainct.obj +jdcoefct.obj & >>$(RFILE)
echo +jdpostct.obj +jddctmgr.obj +jidctfst.obj & >>$(RFILE)
echo +jidctflt.obj +jidctint.obj +jidctred.obj +jdhuff.obj & >>$(RFILE)
echo +jdsample.obj +jdcolor.obj +jquant1.obj +jquant2.obj & >>$(RFILE)
echo +jdmerge.obj +jcomapi.obj +jutils.obj +jerror.obj & >>$(RFILE)
echo +jmemmgr.obj +jmemdos.obj +jmemdosa.obj >>$(RFILE)
echo +jfdctint.obj +jdapimin.obj +jdapistd.obj & >>$(RFILE)
echo +jdtrans.obj +jdatasrc.obj +jdmaster.obj +jdinput.obj & >>$(RFILE)
echo +jdmarker.obj +jdhuff.obj +jdphuff.obj +jdmainct.obj & >>$(RFILE)
echo +jdcoefct.obj +jdpostct.obj +jddctmgr.obj & >>$(RFILE)
echo +jidctfst.obj +jidctflt.obj +jidctint.obj & >>$(RFILE)
echo +jidctred.obj +jdsample.obj +jdcolor.obj +jquant1.obj & >>$(RFILE)
echo +jquant2.obj +jdmerge.obj +jcomapi.obj +jutils.obj & >>$(RFILE)
echo +jerror.obj +jmemmgr.obj +jmemdos.obj +jmemdosa.obj >>$(RFILE)
cjpeg.exe: $(COBJECTS) libjpeg.lib
link /STACK:4096 /EXEPACK $(COBJECTS), cjpeg.exe, , libjpeg.lib, ;
echo $(COBJECTS) >cjpeg.lst
link /STACK:4096 /EXEPACK @cjpeg.lst, cjpeg.exe, , libjpeg.lib, ;
del cjpeg.lst
djpeg.exe: $(DOBJECTS) libjpeg.lib
link /STACK:4096 /EXEPACK $(DOBJECTS), djpeg.exe, , libjpeg.lib, ;
echo $(DOBJECTS) >djpeg.lst
link /STACK:4096 /EXEPACK @djpeg.lst, djpeg.exe, , libjpeg.lib, ;
del djpeg.lst
jpegtran.exe: $(TROBJECTS) libjpeg.lib
link /STACK:4096 /EXEPACK $(TROBJECTS), jpegtran.exe, , libjpeg.lib, ;
rdjpgcom.exe: rdjpgcom.c
$(CC) -AS -O -W3 rdjpgcom.c
@ -122,75 +139,93 @@ clean:
del libjpeg.lib
del cjpeg.exe
del djpeg.exe
del jpegtran.exe
del rdjpgcom.exe
del wrjpgcom.exe
del testout.*
del testout*.*
test: cjpeg.exe djpeg.exe
del testout.*
test: cjpeg.exe djpeg.exe jpegtran.exe
del testout*.*
djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
djpeg -dct int -gif -outfile testout.gif testorig.jpg
cjpeg -dct int -outfile testout.jpg testimg.ppm
djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
jpegtran -outfile testoutt.jpg testprog.jpg
fc /b testimg.ppm testout.ppm
fc /b testimg.gif testout.gif
fc /b testimg.jpg testout.jpg
fc /b testimg.ppm testoutp.ppm
fc /b testimgp.jpg testoutp.jpg
fc /b testorig.jpg testoutt.jpg
jcapi.obj : jcapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.obj : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.obj : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.obj : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.obj : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.obj : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.obj : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.obj : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.obj : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.obj : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcprepct.obj : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.obj : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapi.obj : jdapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatasrc.obj : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatadst.obj : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.obj : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.obj : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.obj : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.obj : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.obj : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.obj : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.obj : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdpostct.obj : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.obj : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.obj : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jutils.obj : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jfdctfst.obj : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctflt.obj : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.obj : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.obj : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.obj : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.obj : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.obj : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.obj : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.obj : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.obj : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.obj : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.obj : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.obj : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.obj : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.obj : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.obj : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.obj : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
rdcolmap.obj : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdppm.obj : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.obj : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.obj : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.obj : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.obj : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.obj : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.obj : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.obj : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.obj : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.obj : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.obj : rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.obj : wrjpgcom.c jinclude.h jconfig.h
jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.obj: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.obj: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.obj: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.obj: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.obj: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.obj: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.obj: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.obj: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.obj: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.obj: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.obj: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.obj: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.obj: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.obj: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.obj: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.obj: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.obj: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.obj: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.obj: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.obj: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.obj: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.obj: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.obj: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.obj: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.obj: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.obj: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.obj: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.obj: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.obj: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.obj: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.obj: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.obj: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.obj: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.obj: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.obj: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.obj: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.obj: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.obj: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.obj: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.obj: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.h
rdppm.obj: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.obj: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.obj: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.obj: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.obj: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.obj: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.obj: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.obj: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.obj: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.obj: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
jmemdosa.obj : jmemdosa.asm
masm /mx $*;

227
makefile.mms
View File

@ -25,69 +25,80 @@ SYSDEPMEM= jmemnobs.obj
# source files: JPEG library proper
LIBSOURCES= jcapi.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c jcmainct.c \
jcmarker.c jcmaster.c jcomapi.c jcparam.c jcprepct.c jcsample.c \
jdapi.c jdatasrc.c jdatadst.c jdcoefct.c jdcolor.c jddctmgr.c \
jdhuff.c jdmainct.c jdmarker.c jdmaster.c jdpostct.c jdsample.c \
jerror.c jutils.c jfdctfst.c jfdctflt.c jfdctint.c jidctfst.c \
jidctflt.c jidctint.c jidctred.c jquant1.c jquant2.c jdmerge.c \
jmemmgr.c jmemansi.c jmemname.c jmemnobs.c jmemdos.c
# source files: cjpeg/djpeg applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c rdcolmap.c rdppm.c wrppm.c rdgif.c wrgif.c \
rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c rdjpgcom.c \
wrjpgcom.c
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c \
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c \
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c \
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
jpeglib.h jversion.h cdjpeg.h cderror.h
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 rdjpgcom.1 wrjpgcom.1 \
example.c libjpeg.doc structure.doc coderules.doc filelist.doc \
change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.manx \
makefile.sas makcjpeg.st makdjpeg.st makljpeg.st makefile.bcc \
makefile.mc6 makefile.dj makefile.mms makefile.vms makvms.opt
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st \
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms \
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc \
jconfig.mc6 jconfig.dj jconfig.vms
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg \
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapi.obj jcparam.obj jdatadst.obj jcmaster.obj jcmarker.obj \
jcmainct.obj jcprepct.obj jccoefct.obj jccolor.obj jcsample.obj \
jchuff.obj jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj
CLIBOBJECTS= jcapimin.obj jcapistd.obj jctrans.obj jcparam.obj jdatadst.obj \
jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj jcprepct.obj \
jccoefct.obj jccolor.obj jcsample.obj jchuff.obj jcphuff.obj \
jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj
# decompression library object files
DLIBOBJECTS= jdapi.obj jdatasrc.obj jdmaster.obj jdmarker.obj jdmainct.obj \
jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj jidctflt.obj \
jidctint.obj jidctred.obj jdhuff.obj jdsample.obj jdcolor.obj \
DLIBOBJECTS= jdapimin.obj jdapistd.obj jdtrans.obj jdatasrc.obj \
jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdphuff.obj \
jdmainct.obj jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj \
jidctflt.obj jidctint.obj jidctred.obj jdsample.obj jdcolor.obj \
jquant1.obj jquant2.obj jdmerge.obj
# These objectfiles are included in libjpeg.olb
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for cjpeg and djpeg applications (excluding library files)
COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \
rdswitch.obj cdjpeg.obj
DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \
rdcolmap.obj
rdcolmap.obj cdjpeg.obj
TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj
# objectfile lists with commas --- what a crock
COBJLIST= cjpeg.obj,rdppm.obj,rdgif.obj,rdtarga.obj,rdrle.obj,rdbmp.obj
COBJLIST= cjpeg.obj,rdppm.obj,rdgif.obj,rdtarga.obj,rdrle.obj,rdbmp.obj,\
rdswitch.obj,cdjpeg.obj
DOBJLIST= djpeg.obj,wrppm.obj,wrgif.obj,wrtarga.obj,wrrle.obj,wrbmp.obj,\
rdcolmap.obj
LIBOBJLIST= jcapi.obj,jcparam.obj,jdatadst.obj,jcmaster.obj,jcmarker.obj,\
jcmainct.obj,jcprepct.obj,jccoefct.obj,jccolor.obj,jcsample.obj,\
jchuff.obj,jcdctmgr.obj,jfdctfst.obj,jfdctflt.obj,jfdctint.obj,\
jdapi.obj,jdatasrc.obj,jdmaster.obj,jdmarker.obj,jdmainct.obj,\
jdcoefct.obj,jdpostct.obj,jddctmgr.obj,jidctfst.obj,jidctflt.obj,\
jidctint.obj,jidctred.obj,jdhuff.obj,jdsample.obj,jdcolor.obj,\
jquant1.obj,jquant2.obj,jdmerge.obj,jcomapi.obj,jutils.obj,\
jerror.obj,jmemmgr.obj,$(SYSDEPMEM)
rdcolmap.obj,cdjpeg.obj
TROBJLIST= jpegtran.obj,rdswitch.obj,cdjpeg.obj
LIBOBJLIST= jcapimin.obj,jcapistd.obj,jctrans.obj,jcparam.obj,jdatadst.obj,\
jcinit.obj,jcmaster.obj,jcmarker.obj,jcmainct.obj,jcprepct.obj,\
jccoefct.obj,jccolor.obj,jcsample.obj,jchuff.obj,jcphuff.obj,\
jcdctmgr.obj,jfdctfst.obj,jfdctflt.obj,jfdctint.obj,jdapimin.obj,\
jdapistd.obj,jdtrans.obj,jdatasrc.obj,jdmaster.obj,jdinput.obj,\
jdmarker.obj,jdhuff.obj,jdphuff.obj,jdmainct.obj,jdcoefct.obj,\
jdpostct.obj,jddctmgr.obj,jidctfst.obj,jidctflt.obj,jidctint.obj,\
jidctred.obj,jdsample.obj,jdcolor.obj,jquant1.obj,jquant2.obj,\
jdmerge.obj,jcomapi.obj,jutils.obj,jerror.obj,jmemmgr.obj,$(SYSDEPMEM)
.first
@- Define /NoLog Sys Sys$Library
ALL : libjpeg.olb cjpeg.exe djpeg.exe rdjpgcom.exe wrjpgcom.exe
ALL : libjpeg.olb cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe
@ Continue
libjpeg.olb : $(LIBOBJECTS)
@ -99,6 +110,9 @@ cjpeg.exe : $(COBJECTS) libjpeg.olb
djpeg.exe : $(DOBJECTS) libjpeg.olb
$(LINK) $(LFLAGS) /Executable = djpeg.exe $(DOBJLIST),libjpeg.olb/Library$(OPT)
jpegtran.exe : $(TROBJECTS) libjpeg.olb
$(LINK) $(LFLAGS) /Executable = jpegtran.exe $(TROBJLIST),libjpeg.olb/Library$(OPT)
rdjpgcom.exe : rdjpgcom.obj
$(LINK) $(LFLAGS) /Executable = rdjpgcom.exe rdjpgcom.obj$(OPT)
@ -114,68 +128,85 @@ clean :
- Purge /NoLog /NoConfirm *.*
- Delete /NoLog /NoConfirm *.OBJ;
test : cjpeg.exe djpeg.exe
test : cjpeg.exe djpeg.exe jpegtran.exe
mcr sys$disk:[]djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
mcr sys$disk:[]djpeg -dct int -gif -outfile testout.gif testorig.jpg
mcr sys$disk:[]cjpeg -dct int -outfile testout.jpg testimg.ppm
mcr sys$disk:[]djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
mcr sys$disk:[]cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
mcr sys$disk:[]jpegtran -outfile testoutt.jpg testprog.jpg
- Backup /Compare/Log testimg.ppm testout.ppm
- Backup /Compare/Log testimg.gif testout.gif
- Backup /Compare/Log testimg.jpg testout.jpg
- Backup /Compare/Log testimg.ppm testoutp.ppm
- Backup /Compare/Log testimgp.jpg testoutp.jpg
- Backup /Compare/Log testorig.jpg testoutt.jpg
jcapi.obj : jcapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.obj : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.obj : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.obj : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.obj : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.obj : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.obj : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.obj : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.obj : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.obj : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcprepct.obj : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.obj : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapi.obj : jdapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatasrc.obj : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatadst.obj : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.obj : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.obj : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.obj : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.obj : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.obj : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.obj : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.obj : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdpostct.obj : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.obj : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.obj : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jutils.obj : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jfdctfst.obj : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctflt.obj : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.obj : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.obj : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.obj : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.obj : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.obj : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.obj : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.obj : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.obj : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.obj : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.obj : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.obj : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.obj : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.obj : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.obj : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.obj : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
rdcolmap.obj : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdppm.obj : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.obj : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.obj : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.obj : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.obj : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.obj : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.obj : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.obj : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.obj : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.obj : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.obj : rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.obj : wrjpgcom.c jinclude.h jconfig.h
jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.obj: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.obj: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.obj: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.obj: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.obj: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.obj: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.obj: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.obj: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.obj: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.obj: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.obj: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.obj: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.obj: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.obj: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.obj: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.obj: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.obj: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.obj: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.obj: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.obj: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.obj: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.obj: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.obj: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.obj: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.obj: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.obj: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.obj: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.obj: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.obj: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.obj: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.obj: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.obj: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.obj: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.obj: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.obj: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.obj: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.obj: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.obj: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.obj: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.obj: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.h
rdppm.obj: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.obj: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.obj: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.obj: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.obj: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.obj: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.obj: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.obj: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.obj: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.obj: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h

213
makefile.sas
View File

@ -47,52 +47,61 @@ AR= oml
# source files: JPEG library proper
LIBSOURCES= jcapi.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c jcmainct.c \
jcmarker.c jcmaster.c jcomapi.c jcparam.c jcprepct.c jcsample.c \
jdapi.c jdatasrc.c jdatadst.c jdcoefct.c jdcolor.c jddctmgr.c \
jdhuff.c jdmainct.c jdmarker.c jdmaster.c jdpostct.c jdsample.c \
jerror.c jutils.c jfdctfst.c jfdctflt.c jfdctint.c jidctfst.c \
jidctflt.c jidctint.c jidctred.c jquant1.c jquant2.c jdmerge.c \
jmemmgr.c jmemansi.c jmemname.c jmemnobs.c jmemdos.c
# source files: cjpeg/djpeg applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c rdcolmap.c rdppm.c wrppm.c rdgif.c wrgif.c \
rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c rdjpgcom.c \
wrjpgcom.c
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c \
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c \
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c \
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
jpeglib.h jversion.h cdjpeg.h cderror.h
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 rdjpgcom.1 wrjpgcom.1 \
example.c libjpeg.doc structure.doc coderules.doc filelist.doc \
change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.manx \
makefile.sas makcjpeg.st makdjpeg.st makljpeg.st makefile.bcc \
makefile.mc6 makefile.dj makefile.mms makefile.vms makvms.opt
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st \
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms \
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc \
jconfig.mc6 jconfig.dj jconfig.vms
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg \
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapi.o jcparam.o jdatadst.o jcmaster.o jcmarker.o jcmainct.o \
jcprepct.o jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o \
jfdctfst.o jfdctflt.o jfdctint.o
CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \
jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \
jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \
jfdctint.o
# decompression library object files
DLIBOBJECTS= jdapi.o jdatasrc.o jdmaster.o jdmarker.o jdmainct.o jdcoefct.o \
DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \
jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \
jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \
jdhuff.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
# These objectfiles are included in libjpeg.lib
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for cjpeg and djpeg applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \
cdjpeg.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \
cdjpeg.o
TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o
all: libjpeg.lib cjpeg$(SUFFIX) djpeg$(SUFFIX) rdjpgcom$(SUFFIX) wrjpgcom$(SUFFIX)
all: libjpeg.lib cjpeg$(SUFFIX) djpeg$(SUFFIX) jpegtran$(SUFFIX) rdjpgcom$(SUFFIX) wrjpgcom$(SUFFIX)
libjpeg.lib: $(LIBOBJECTS)
-$(RM) libjpeg.lib
@ -114,6 +123,14 @@ FROM LIB:c.o $(DOBJECTS)
LIB libjpeg.lib $(LDLIBS)
<
jpegtran$(SUFFIX): $(TROBJECTS) libjpeg.lib
$(LN) <WITH <
$(LDFLAGS)
TO jpegtran$(SUFFIX)
FROM LIB:c.o $(TROBJECTS)
LIB libjpeg.lib $(LDLIBS)
<
rdjpgcom$(SUFFIX): rdjpgcom.o
$(LN) <WITH <
$(LDFLAGS)
@ -136,72 +153,90 @@ jconfig.h: jconfig.doc
exit 1
clean:
-$(RM) *.o cjpeg djpeg cjpeg.030 djpeg.030 libjpeg.lib core testout.*
-$(RM) *.o cjpeg djpeg jpegtran cjpeg.030 djpeg.030 jpegtran.030
-$(RM) rdjpgcom wrjpgcom rdjpgcom.030 wrjpgcom.030
-$(RM) libjpeg.lib core testout*.*
test: cjpeg djpeg
-$(RM) testout.ppm testout.gif testout.jpg
test: cjpeg djpeg jpegtran
-$(RM) testout*.*
djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
djpeg -dct int -gif -outfile testout.gif testorig.jpg
cjpeg -dct int -outfile testout.jpg testimg.ppm
djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
jpegtran -outfile testoutt.jpg testprog.jpg
cmp testimg.ppm testout.ppm
cmp testimg.gif testout.gif
cmp testimg.jpg testout.jpg
cmp testimg.ppm testoutp.ppm
cmp testimgp.jpg testoutp.jpg
cmp testorig.jpg testoutt.jpg
jcapi.o : jcapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcprepct.o : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapi.o : jdapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatasrc.o : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatadst.o : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdpostct.o : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jutils.o : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jfdctfst.o : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctflt.o : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
rdcolmap.o : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdppm.o : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o : rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o : wrjpgcom.c jinclude.h jconfig.h
jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.o: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.o: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h
rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h

208
makefile.unix
View File

@ -42,52 +42,61 @@ AR2= ranlib
# source files: JPEG library proper
LIBSOURCES= jcapi.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c jcmainct.c \
jcmarker.c jcmaster.c jcomapi.c jcparam.c jcprepct.c jcsample.c \
jdapi.c jdatasrc.c jdatadst.c jdcoefct.c jdcolor.c jddctmgr.c \
jdhuff.c jdmainct.c jdmarker.c jdmaster.c jdpostct.c jdsample.c \
jerror.c jutils.c jfdctfst.c jfdctflt.c jfdctint.c jidctfst.c \
jidctflt.c jidctint.c jidctred.c jquant1.c jquant2.c jdmerge.c \
jmemmgr.c jmemansi.c jmemname.c jmemnobs.c jmemdos.c
# source files: cjpeg/djpeg applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c rdcolmap.c rdppm.c wrppm.c rdgif.c wrgif.c \
rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c rdjpgcom.c \
wrjpgcom.c
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c \
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c \
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c \
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
jpeglib.h jversion.h cdjpeg.h cderror.h
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 rdjpgcom.1 wrjpgcom.1 \
example.c libjpeg.doc structure.doc coderules.doc filelist.doc \
change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.manx \
makefile.sas makcjpeg.st makdjpeg.st makljpeg.st makefile.bcc \
makefile.mc6 makefile.dj makefile.mms makefile.vms makvms.opt
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st \
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms \
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc \
jconfig.mc6 jconfig.dj jconfig.vms
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg \
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapi.o jcparam.o jdatadst.o jcmaster.o jcmarker.o jcmainct.o \
jcprepct.o jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o \
jfdctfst.o jfdctflt.o jfdctint.o
CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \
jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \
jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \
jfdctint.o
# decompression library object files
DLIBOBJECTS= jdapi.o jdatasrc.o jdmaster.o jdmarker.o jdmainct.o jdcoefct.o \
DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \
jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \
jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \
jdhuff.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o
# These objectfiles are included in libjpeg.a
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for cjpeg and djpeg applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \
cdjpeg.o
DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \
cdjpeg.o
TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o
all: ansi2knr libjpeg.a cjpeg djpeg rdjpgcom wrjpgcom
all: ansi2knr libjpeg.a cjpeg djpeg jpegtran rdjpgcom wrjpgcom
# This rule causes ansi2knr to be invoked.
.c.o:
@ -110,6 +119,9 @@ cjpeg: ansi2knr $(COBJECTS) libjpeg.a
djpeg: ansi2knr $(DOBJECTS) libjpeg.a
$(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.a $(LDLIBS)
jpegtran: ansi2knr $(TROBJECTS) libjpeg.a
$(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.a $(LDLIBS)
rdjpgcom: rdjpgcom.o
$(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS)
@ -122,71 +134,89 @@ jconfig.h: jconfig.doc
exit 1
clean:
$(RM) *.o cjpeg djpeg libjpeg.a rdjpgcom wrjpgcom ansi2knr core testout.*
$(RM) *.o cjpeg djpeg jpegtran libjpeg.a rdjpgcom wrjpgcom
$(RM) ansi2knr core testout*
test: cjpeg djpeg
$(RM) testout.ppm testout.gif testout.jpg
test: cjpeg djpeg jpegtran
$(RM) testout*
./djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
./djpeg -dct int -gif -outfile testout.gif testorig.jpg
./cjpeg -dct int -outfile testout.jpg testimg.ppm
./djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
./cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
./jpegtran -outfile testoutt.jpg testprog.jpg
cmp testimg.ppm testout.ppm
cmp testimg.gif testout.gif
cmp testimg.jpg testout.jpg
cmp testimg.ppm testoutp.ppm
cmp testimgp.jpg testoutp.jpg
cmp testorig.jpg testoutt.jpg
jcapi.o : jcapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcprepct.o : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapi.o : jdapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatasrc.o : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatadst.o : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdpostct.o : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jutils.o : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jfdctfst.o : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctflt.o : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
rdcolmap.o : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdppm.o : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o : rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o : wrjpgcom.c jinclude.h jconfig.h
jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.o: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.o: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.o: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h
rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h

51
makefile.vms
View File

@ -17,9 +17,12 @@ $ EndIf
$
$ DoCompile := CC /NoDebug /Optimize
$!
$ DoCompile jcapi.c
$ DoCompile jcapimin.c
$ DoCompile jcapistd.c
$ DoCompile jctrans.c
$ DoCompile jcparam.c
$ DoCompile jdatadst.c
$ DoCompile jcinit.c
$ DoCompile jcmaster.c
$ DoCompile jcmarker.c
$ DoCompile jcmainct.c
@ -28,14 +31,20 @@ $ DoCompile jccoefct.c
$ DoCompile jccolor.c
$ DoCompile jcsample.c
$ DoCompile jchuff.c
$ DoCompile jcphuff.c
$ DoCompile jcdctmgr.c
$ DoCompile jfdctfst.c
$ DoCompile jfdctflt.c
$ DoCompile jfdctint.c
$ DoCompile jdapi.c
$ DoCompile jdapimin.c
$ DoCompile jdapistd.c
$ DoCompile jdtrans.c
$ DoCompile jdatasrc.c
$ DoCompile jdmaster.c
$ DoCompile jdinput.c
$ DoCompile jdmarker.c
$ DoCompile jdhuff.c
$ DoCompile jdphuff.c
$ DoCompile jdmainct.c
$ DoCompile jdcoefct.c
$ DoCompile jdpostct.c
@ -44,7 +53,6 @@ $ DoCompile jidctfst.c
$ DoCompile jidctflt.c
$ DoCompile jidctint.c
$ DoCompile jidctred.c
$ DoCompile jdhuff.c
$ DoCompile jdsample.c
$ DoCompile jdcolor.c
$ DoCompile jquant1.c
@ -56,14 +64,16 @@ $ DoCompile jerror.c
$ DoCompile jmemmgr.c
$ DoCompile jmemnobs.c
$!
$ Library /Create libjpeg.olb jcapi.obj,jcparam.obj,jdatadst.obj, -
jcmaster.obj,jcmarker.obj,jcmainct.obj,jcprepct.obj,jccoefct.obj, -
jccolor.obj,jcsample.obj,jchuff.obj,jcdctmgr.obj,jfdctfst.obj, -
jfdctflt.obj,jfdctint.obj,jdapi.obj,jdatasrc.obj,jdmaster.obj, -
jdmarker.obj,jdmainct.obj,jdcoefct.obj,jdpostct.obj,jddctmgr.obj, -
jidctfst.obj,jidctflt.obj,jidctint.obj,jidctred.obj,jdhuff.obj, -
jdsample.obj,jdcolor.obj,jquant1.obj,jquant2.obj,jdmerge.obj, -
jcomapi.obj,jutils.obj,jerror.obj,jmemmgr.obj,jmemnobs.obj
$ Library /Create libjpeg.olb jcapimin.obj,jcapistd.obj,jctrans.obj, -
jcparam.obj,jdatadst.obj,jcinit.obj,jcmaster.obj,jcmarker.obj, -
jcmainct.obj,jcprepct.obj,jccoefct.obj,jccolor.obj,jcsample.obj, -
jchuff.obj,jcphuff.obj,jcdctmgr.obj,jfdctfst.obj,jfdctflt.obj, -
jfdctint.obj,jdapimin.obj,jdapistd.obj,jdtrans.obj,jdatasrc.obj, -
jdmaster.obj,jdinput.obj,jdmarker.obj,jdhuff.obj,jdphuff.obj, -
jdmainct.obj,jdcoefct.obj,jdpostct.obj,jddctmgr.obj,jidctfst.obj, -
jidctflt.obj,jidctint.obj,jidctred.obj,jdsample.obj,jdcolor.obj, -
jquant1.obj,jquant2.obj,jdmerge.obj,jcomapi.obj,jutils.obj, -
jerror.obj,jmemmgr.obj,jmemnobs.obj
$!
$ DoCompile cjpeg.c
$ DoCompile rdppm.c
@ -71,9 +81,11 @@ $ DoCompile rdgif.c
$ DoCompile rdtarga.c
$ DoCompile rdrle.c
$ DoCompile rdbmp.c
$ DoCompile rdswitch.c
$ DoCompile cdjpeg.c
$!
$ Link /Executable = cjpeg.exe cjpeg.obj,rdppm.obj,rdgif.obj,rdtarga.obj, -
rdrle.obj,rdbmp.obj,libjpeg.olb/Library'OPT'
rdrle.obj,rdbmp.obj,rdswitch.obj,cdjpeg.obj,libjpeg.olb/Library'OPT'
$!
$ DoCompile djpeg.c
$ DoCompile wrppm.c
@ -82,9 +94,16 @@ $ DoCompile wrtarga.c
$ DoCompile wrrle.c
$ DoCompile wrbmp.c
$ DoCompile rdcolmap.c
$ DoCompile cdjpeg.c
$!
$ Link /Executable = djpeg.exe djpeg.obj,wrppm.obj,wrgif.obj,wrtarga.obj, -
wrrle.obj,wrbmp.obj,rdcolmap.obj,libjpeg.olb/Library'OPT'
wrrle.obj,wrbmp.obj,rdcolmap.obj,cdjpeg.obj,libjpeg.olb/Library'OPT'
$!
$ DoCompile jpegtran.c
$ DoCompile rdswitch.c
$ DoCompile cdjpeg.c
$!
$ Link /Executable = jpegtran.exe jpegtran.obj,rdswitch.obj,cdjpeg.obj,libjpeg.olb/Library'OPT'
$!
$ DoCompile rdjpgcom.c
$ Link /Executable = rdjpgcom.exe rdjpgcom.obj'OPT'
@ -97,8 +116,14 @@ $!
$ mcr sys$disk:[]djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
$ mcr sys$disk:[]djpeg -dct int -gif -outfile testout.gif testorig.jpg
$ mcr sys$disk:[]cjpeg -dct int -outfile testout.jpg testimg.ppm
$ mcr sys$disk:[]djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
$ mcr sys$disk:[]cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
$ mcr sys$disk:[]jpegtran -outfile testoutt.jpg testprog.jpg
$ Backup /Compare/Log testimg.ppm testout.ppm
$ Backup /Compare/Log testimg.gif testout.gif
$ Backup /Compare/Log testimg.jpg testout.jpg
$ Backup /Compare/Log testimg.ppm testoutp.ppm
$ Backup /Compare/Log testimgp.jpg testoutp.jpg
$ Backup /Compare/Log testorig.jpg testoutt.jpg
$!
$ Exit

227
makefile.wat Normal file
View File

@ -0,0 +1,227 @@
# Makefile for Independent JPEG Group's software
# This makefile is suitable for Watcom C/C++ 10.0 on MS-DOS (using
# dos4g extender), OS/2, and Windows NT console mode.
# Thanks to Janos Haide, jhaide@btrvtech.com.
# Read installation instructions before saying "wmake" !!
# Uncomment line for desired system
SYSTEM=DOS
#SYSTEM=OS2
#SYSTEM=NT
# The name of your C compiler:
CC= wcl386
# You may need to adjust these cc options:
CFLAGS= -4r -ort -wx -zq -bt=$(SYSTEM)
# Caution: avoid -ol or -ox; these generate bad code with 10.0 or 10.0a.
# Generally, we recommend defining any configuration symbols in jconfig.h,
# NOT via -D switches here.
# Link-time cc options:
!ifeq SYSTEM DOS
LDFLAGS= -zq -l=dos4g
!else ifeq SYSTEM OS2
LDFLAGS= -zq -l=os2v2
!else ifeq SYSTEM NT
LDFLAGS= -zq -l=nt
!endif
# Put here the object file name for the correct system-dependent memory
# manager file. jmemnobs should work fine for dos4g or OS/2 environment.
SYSDEPMEM= jmemnobs.obj
# End of configurable options.
# source files: JPEG library proper
LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c &
jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c &
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c &
jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c &
jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c &
jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c &
jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c &
jquant2.c jutils.c jmemmgr.c jmemansi.c jmemname.c jmemnobs.c &
jmemdos.c
# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
APPSOURCES= cjpeg.c djpeg.c jpegtran.c cdjpeg.c rdcolmap.c rdswitch.c &
rdjpgcom.c wrjpgcom.c rdppm.c wrppm.c rdgif.c wrgif.c rdtarga.c &
wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
SOURCES= $(LIBSOURCES) $(APPSOURCES)
# files included by source files
INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h &
jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h
# documentation, test, and support files
DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 &
wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc &
coderules.doc filelist.doc change.log
MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc &
makefile.mc6 makefile.dj makefile.wat makcjpeg.st makdjpeg.st &
makljpeg.st maktjpeg.st makefile.manx makefile.sas makefile.mms &
makefile.vms makvms.opt
CONFIGFILES= jconfig.cfg jconfig.manx jconfig.sas jconfig.st jconfig.bcc &
jconfig.mc6 jconfig.dj jconfig.wat jconfig.vms
OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm
TESTFILES= testorig.jpg testimg.ppm testimg.gif testimg.jpg testprog.jpg &
testimgp.jpg
DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) &
$(OTHERFILES) $(TESTFILES)
# library object files common to compression and decompression
COMOBJECTS= jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM)
# compression library object files
CLIBOBJECTS= jcapimin.obj jcapistd.obj jctrans.obj jcparam.obj jdatadst.obj &
jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj jcprepct.obj &
jccoefct.obj jccolor.obj jcsample.obj jchuff.obj jcphuff.obj &
jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj
# decompression library object files
DLIBOBJECTS= jdapimin.obj jdapistd.obj jdtrans.obj jdatasrc.obj &
jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdphuff.obj &
jdmainct.obj jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj &
jidctflt.obj jidctint.obj jidctred.obj jdsample.obj jdcolor.obj &
jquant1.obj jquant2.obj jdmerge.obj
# These objectfiles are included in libjpeg.lib
LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS)
# object files for sample applications (excluding library files)
COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj &
rdswitch.obj cdjpeg.obj
DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj &
rdcolmap.obj cdjpeg.obj
TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj
all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe
libjpeg.lib: $(LIBOBJECTS)
- del libjpeg.lib
* wlib -n libjpeg.lib $(LIBOBJECTS)
cjpeg.exe: $(COBJECTS) libjpeg.lib
$(CC) $(LDFLAGS) $(COBJECTS) libjpeg.lib
djpeg.exe: $(DOBJECTS) libjpeg.lib
$(CC) $(LDFLAGS) $(DOBJECTS) libjpeg.lib
jpegtran.exe: $(TROBJECTS) libjpeg.lib
$(CC) $(LDFLAGS) $(TROBJECTS) libjpeg.lib
rdjpgcom.exe: rdjpgcom.c
$(CC) $(CFLAGS) $(LDFLAGS) rdjpgcom.c
wrjpgcom.exe: wrjpgcom.c
$(CC) $(CFLAGS) $(LDFLAGS) wrjpgcom.c
.c.obj:
$(CC) $(CFLAGS) -c $<
jconfig.h: jconfig.doc
echo You must prepare a system-dependent jconfig.h file.
echo Please read the installation directions in install.doc.
exit 1
clean: .SYMBOLIC
- del *.obj
- del libjpeg.lib
- del cjpeg.exe
- del djpeg.exe
- del jpegtran.exe
- del rdjpgcom.exe
- del wrjpgcom.exe
- del testout*.*
test: cjpeg.exe djpeg.exe jpegtran.exe .SYMBOLIC
- del testout*.*
djpeg -dct int -ppm -outfile testout.ppm testorig.jpg
djpeg -dct int -gif -outfile testout.gif testorig.jpg
cjpeg -dct int -outfile testout.jpg testimg.ppm
djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg
cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm
jpegtran -outfile testoutt.jpg testprog.jpg
!ifeq SYSTEM DOS
fc /b testimg.ppm testout.ppm
fc /b testimg.gif testout.gif
fc /b testimg.jpg testout.jpg
fc /b testimg.ppm testoutp.ppm
fc /b testimgp.jpg testoutp.jpg
fc /b testorig.jpg testoutt.jpg
!else
echo n > n.tmp
comp testimg.ppm testout.ppm < n.tmp
comp testimg.gif testout.gif < n.tmp
comp testimg.jpg testout.jpg < n.tmp
comp testimg.ppm testoutp.ppm < n.tmp
comp testimgp.jpg testoutp.jpg < n.tmp
comp testorig.jpg testoutt.jpg < n.tmp
del n.tmp
!endif
jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcphuff.obj: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h
jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapimin.obj: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdapistd.obj: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdatadst.obj: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdatasrc.obj: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h
jdcoefct.obj: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdcolor.obj: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jddctmgr.obj: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jdhuff.obj: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdinput.obj: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmainct.obj: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmarker.obj: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmaster.obj: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdmerge.obj: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdphuff.obj: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h
jdpostct.obj: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdsample.obj: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jdtrans.obj: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jerror.obj: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h
jfdctflt.obj: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctfst.obj: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jfdctint.obj: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctflt.obj: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctfst.obj: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctint.obj: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jidctred.obj: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h
jquant1.obj: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jquant2.obj: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jutils.obj: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h
jmemmgr.obj: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemansi.obj: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemname.obj: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemnobs.obj: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
jmemdos.obj: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h
cjpeg.obj: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
djpeg.obj: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
jpegtran.obj: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h
cdjpeg.obj: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdcolmap.obj: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdswitch.obj: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h
wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.h
rdppm.obj: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrppm.obj: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdgif.obj: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrgif.obj: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdtarga.obj: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrtarga.obj: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdbmp.obj: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrbmp.obj: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
rdrle.obj: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h
wrrle.obj: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h

26
makljpeg.st
View File

@ -21,41 +21,49 @@ libjpeg.lib
.L[-J] ; link new Obj-format (so we get a library)
=
; * * * * List of modules * * * *
jcapi.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcapimin.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcapistd.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jccoefct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jccolor.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcdctmgr.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jchuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jchuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jchuff.h)
jcinit.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcmainct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcmarker.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcmaster.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcomapi.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcparam.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcphuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jchuff.h)
jcprepct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jcsample.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdapi.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdatasrc.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h)
jctrans.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdapimin.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdapistd.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdatadst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h)
jdatasrc.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h)
jdcoefct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdcolor.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jddctmgr.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jdhuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdhuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdhuff.h)
jdinput.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdmainct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdmarker.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdmaster.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdmerge.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdphuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdhuff.h)
jdpostct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdsample.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdtrans.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jerror.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jversion.h,jerror.h)
jutils.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jfdctfst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jfdctflt.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jfdctfst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jfdctint.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jidctfst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jidctflt.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jidctfst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jidctint.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jidctred.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h)
jquant1.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jquant2.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jdmerge.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jutils.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h)
jmemmgr.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jmemsys.h)
jmemansi.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jmemsys.h)

30
maktjpeg.st Normal file
View File

@ -0,0 +1,30 @@
; Project file for Independent JPEG Group's software
;
; This project file is for Atari ST/STE/TT systems using Pure C or Turbo C.
; Thanks to Frank Moehle (Frank.Moehle@arbi.informatik.uni-oldenburg.de)
; and to Dr. B. Setzepfandt (bernd@gina.uni-muenster.de).
;
; To use this file, rename it to JPEGTRAN.PRJ.
; If you are using Turbo C, change filenames beginning with "PC..." to "TC..."
; Read installation instructions before trying to make the program!
;
;
; * * * Output file * * *
jpegtran.ttp
;
; * * * COMPILER OPTIONS * * *
.C[-P] ; absolute calls
.C[-M] ; and no string merging, folks
.C[-w-cln] ; no "constant is long" warnings
.C[-w-par] ; no "parameter xxxx unused"
.C[-w-rch] ; no "unreachable code"
.C[-wsig] ; warn if significant digits may be lost
=
; * * * * List of modules * * * *
PCSTART.O
jpegtran.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h,jversion.h)
cdjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)
rdswitch.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h)
LIBJPEG.LIB ; built by LIBJPEG.PRJ
PCSTDLIB.LIB ; standard library
PCEXTLIB.LIB ; extended library

13
rdbmp.c
View File

@ -1,7 +1,7 @@
/*
* rdbmp.c
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -129,7 +129,8 @@ get_8bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
/* Fetch next row from virtual array */
source->source_row--;
image_ptr = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->whole_image, source->source_row, FALSE);
((j_common_ptr) cinfo, source->whole_image,
source->source_row, (JDIMENSION) 1, FALSE);
/* Expand the colormap indexes to real data */
inptr = image_ptr[0];
@ -157,7 +158,8 @@ get_24bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
/* Fetch next row from virtual array */
source->source_row--;
image_ptr = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->whole_image, source->source_row, FALSE);
((j_common_ptr) cinfo, source->whole_image,
source->source_row, (JDIMENSION) 1, FALSE);
/* Transfer data. Note source values are in BGR order
* (even though Microsoft's own documents say the opposite).
@ -200,7 +202,8 @@ preload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
(*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
}
image_ptr = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->whole_image, row, TRUE);
((j_common_ptr) cinfo, source->whole_image,
row, (JDIMENSION) 1, TRUE);
out_ptr = image_ptr[0];
for (col = source->row_width; col > 0; col--) {
/* inline copy of read_byte() for speed */
@ -379,7 +382,7 @@ start_input_bmp (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
/* Allocate space for inversion array, prepare for preload pass */
source->whole_image = (*cinfo->mem->request_virt_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
row_width, (JDIMENSION) biHeight, (JDIMENSION) 1);
source->pub.get_pixel_rows = preload_image;
if (cinfo->progress != NULL) {

4
rdcolmap.c
View File

@ -1,7 +1,7 @@
/*
* rdcolmap.c
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -152,7 +152,7 @@ read_pbm_integer (j_decompress_ptr cinfo, FILE * infile)
} while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r');
if (ch < '0' || ch > '9')
ERREXIT(cinfo, JERR_PPM_NONNUMERIC);
ERREXIT(cinfo, JERR_BAD_CMAP_FILE);
val = ch - '0';
while ((ch = pbm_getc(infile)) >= '0' && ch <= '9') {

10
rdgif.c
View File

@ -1,7 +1,7 @@
/*
* rdgif.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -498,7 +498,7 @@ start_input_gif (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
* image is postponed until the first call to get_pixel_rows.
*/
source->interlaced_image = (*cinfo->mem->request_virt_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
(JDIMENSION) width, (JDIMENSION) height, (JDIMENSION) 1);
if (cinfo->progress != NULL) {
cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress;
@ -576,7 +576,8 @@ load_interlaced_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
(*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
}
image_ptr = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->interlaced_image, row, TRUE);
((j_common_ptr) cinfo, source->interlaced_image,
row, (JDIMENSION) 1, TRUE);
sptr = image_ptr[0];
for (col = cinfo->image_width; col > 0; col--) {
*sptr++ = (JSAMPLE) LZWReadByte(source);
@ -631,7 +632,8 @@ get_interlaced_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
break;
}
image_ptr = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->interlaced_image, irow, FALSE);
((j_common_ptr) cinfo, source->interlaced_image,
irow, (JDIMENSION) 1, FALSE);
/* Scan the row, expand colormap, and output */
sptr = image_ptr[0];
ptr = source->pub.buffer[0];

3
rdjpgcom.1
View File

@ -1,4 +1,4 @@
.TH RDJPGCOM 1 "8 July 1994"
.TH RDJPGCOM 1 "15 June 1995"
.SH NAME
rdjpgcom \- display text comments from a JPEG file
.SH SYNOPSIS
@ -39,6 +39,7 @@ header correctly.
.SH SEE ALSO
.BR cjpeg (1),
.BR djpeg (1),
.BR jpegtran (1),
.BR wrjpgcom (1)
.SH AUTHOR
Independent JPEG Group

2
rdjpgcom.c
View File

@ -100,7 +100,7 @@ read_2_bytes (void)
#define M_SOF0 0xC0 /* Start Of Frame N */
#define M_SOF1 0xC1 /* N indicates which compression process */
#define M_SOF2 0xC2 /* Only SOF0 and SOF1 are now in common use */
#define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */
#define M_SOF3 0xC3
#define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */
#define M_SOF6 0xC6

14
rdrle.c
View File

@ -1,7 +1,7 @@
/*
* rdrle.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -162,7 +162,7 @@ start_input_rle (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
/* request a virtual array to hold the image */
source->image = (*cinfo->mem->request_virt_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
(JDIMENSION) (width * source->header.ncolors),
(JDIMENSION) height, (JDIMENSION) 1);
@ -190,7 +190,7 @@ get_rle_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
source->row--;
source->pub.buffer = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->image, source->row, FALSE);
((j_common_ptr) cinfo, source->image, source->row, (JDIMENSION) 1, FALSE);
return 1;
}
@ -214,7 +214,7 @@ get_pseudocolor_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
dest_row = source->pub.buffer[0];
source->row--;
src_row = * (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->image, source->row, FALSE);
((j_common_ptr) cinfo, source->image, source->row, (JDIMENSION) 1, FALSE);
for (col = cinfo->image_width; col > 0; col--) {
val = GETJSAMPLE(*src_row++);
@ -273,7 +273,7 @@ load_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
case PSEUDOCOLOR:
for (row = 0; row < cinfo->image_height; row++) {
rle_row = (rle_pixel **) (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->image, row, TRUE);
((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE);
rle_getrow(&source->header, rle_row);
#ifdef PROGRESS_REPORT
if (progress != NULL) {
@ -288,7 +288,7 @@ load_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
case TRUECOLOR:
for (row = 0; row < cinfo->image_height; row++) {
scanline = * (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->image, row, TRUE);
((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE);
rle_row = source->rle_row;
rle_getrow(&source->header, rle_row);
@ -311,7 +311,7 @@ load_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
case DIRECTCOLOR:
for (row = 0; row < cinfo->image_height; row++) {
scanline = * (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->image, row, TRUE);
((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE);
rle_getrow(&source->header, rle_row);
red_ptr = rle_row[0];

342
rdswitch.c Normal file
View File

@ -0,0 +1,342 @@
/*
* rdswitch.c
*
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains routines to process some of cjpeg's more complicated
* command-line switches. Switches processed here are:
* -qtables file Read quantization tables from text file
* -scans file Read scan script from text file
* -qslots N[,N,...] Set component quantization table selectors
* -sample HxV[,HxV,...] Set component sampling factors
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include <ctype.h> /* to declare isdigit(), isspace() */
/* Hack: get access to jpeg_zigzag_order[] table in jutils.c.
* Since it's declared in jpegint.h, normally can't see it from an application.
*/
#ifdef NEED_SHORT_EXTERNAL_NAMES
#define jpeg_zigzag_order jZIGTable
#endif
extern const int jpeg_zigzag_order[];
LOCAL int
text_getc (FILE * file)
/* Read next char, skipping over any comments (# to end of line) */
/* A comment/newline sequence is returned as a newline */
{
register int ch;
ch = getc(file);
if (ch == '#') {
do {
ch = getc(file);
} while (ch != '\n' && ch != EOF);
}
return ch;
}
LOCAL boolean
read_text_integer (FILE * file, long * result, int * termchar)
/* Read an unsigned decimal integer from a file, store it in result */
/* Reads one trailing character after the integer; returns it in termchar */
{
register int ch;
register long val;
/* Skip any leading whitespace, detect EOF */
do {
ch = text_getc(file);
if (ch == EOF) {
*termchar = ch;
return FALSE;
}
} while (isspace(ch));
if (! isdigit(ch)) {
*termchar = ch;
return FALSE;
}
val = ch - '0';
while ((ch = text_getc(file)) != EOF) {
if (! isdigit(ch))
break;
val *= 10;
val += ch - '0';
}
*result = val;
*termchar = ch;
return TRUE;
}
GLOBAL boolean
read_quant_tables (j_compress_ptr cinfo, char * filename,
int scale_factor, boolean force_baseline)
/* Read a set of quantization tables from the specified file.
* The file is plain ASCII text: decimal numbers with whitespace between.
* Comments preceded by '#' may be included in the file.
* There may be one to NUM_QUANT_TBLS tables in the file, each of 64 values.
* The tables are implicitly numbered 0,1,etc.
* NOTE: does not affect the qslots mapping, which will default to selecting
* table 0 for luminance (or primary) components, 1 for chrominance components.
* You must use -qslots if you want a different component->table mapping.
*/
{
FILE * fp;
int tblno, i, termchar;
long val;
unsigned int table[DCTSIZE2];
if ((fp = fopen(filename, "r")) == NULL) {
fprintf(stderr, "Can't open table file %s\n", filename);
return FALSE;
}
tblno = 0;
while (read_text_integer(fp, &val, &termchar)) { /* read 1st element of table */
if (tblno >= NUM_QUANT_TBLS) {
fprintf(stderr, "Too many tables in file %s\n", filename);
fclose(fp);
return FALSE;
}
table[0] = (unsigned int) val;
for (i = 1; i < DCTSIZE2; i++) {
if (! read_text_integer(fp, &val, &termchar)) {
fprintf(stderr, "Invalid table data in file %s\n", filename);
fclose(fp);
return FALSE;
}
/* Convert from natural order in the file to zigzag table order. */
table[jpeg_zigzag_order[i]] = (unsigned int) val;
}
jpeg_add_quant_table(cinfo, tblno, table, scale_factor, force_baseline);
tblno++;
}
if (termchar != EOF) {
fprintf(stderr, "Non-numeric data in file %s\n", filename);
fclose(fp);
return FALSE;
}
fclose(fp);
return TRUE;
}
#ifdef C_MULTISCAN_FILES_SUPPORTED
LOCAL boolean
read_scan_integer (FILE * file, long * result, int * termchar)
/* Variant of read_text_integer that always looks for a non-space termchar;
* this simplifies parsing of punctuation in scan scripts.
*/
{
register int ch;
if (! read_text_integer(file, result, termchar))
return FALSE;
ch = *termchar;
while (ch != EOF && isspace(ch))
ch = text_getc(file);
if (isdigit(ch)) { /* oops, put it back */
if (ungetc(ch, file) == EOF)
return FALSE;
ch = ' ';
} else {
/* Any separators other than ';' and ':' are ignored;
* this allows user to insert commas, etc, if desired.
*/
if (ch != EOF && ch != ';' && ch != ':')
ch = ' ';
}
*termchar = ch;
return TRUE;
}
GLOBAL boolean
read_scan_script (j_compress_ptr cinfo, char * filename)
/* Read a scan script from the specified text file.
* Each entry in the file defines one scan to be emitted.
* Entries are separated by semicolons ';'.
* An entry contains one to four component indexes,
* optionally followed by a colon ':' and four progressive-JPEG parameters.
* The component indexes denote which component(s) are to be transmitted
* in the current scan. The first component has index 0.
* Sequential JPEG is used if the progressive-JPEG parameters are omitted.
* The file is free format text: any whitespace may appear between numbers
* and the ':' and ';' punctuation marks. Also, other punctuation (such
* as commas or dashes) can be placed between numbers if desired.
* Comments preceded by '#' may be included in the file.
* Note: we do very little validity checking here;
* jcmaster.c will validate the script parameters.
*/
{
FILE * fp;
int scanno, ncomps, termchar;
long val;
jpeg_scan_info * scanptr;
#define MAX_SCANS 100 /* quite arbitrary limit */
jpeg_scan_info scans[MAX_SCANS];
if ((fp = fopen(filename, "r")) == NULL) {
fprintf(stderr, "Can't open scan definition file %s\n", filename);
return FALSE;
}
scanptr = scans;
scanno = 0;
while (read_scan_integer(fp, &val, &termchar)) {
if (scanno >= MAX_SCANS) {
fprintf(stderr, "Too many scans defined in file %s\n", filename);
fclose(fp);
return FALSE;
}
scanptr->component_index[0] = (int) val;
ncomps = 1;
while (termchar == ' ') {
if (ncomps >= MAX_COMPS_IN_SCAN) {
fprintf(stderr, "Too many components in one scan in file %s\n",
filename);
fclose(fp);
return FALSE;
}
if (! read_scan_integer(fp, &val, &termchar))
goto bogus;
scanptr->component_index[ncomps] = (int) val;
ncomps++;
}
scanptr->comps_in_scan = ncomps;
if (termchar == ':') {
if (! read_scan_integer(fp, &val, &termchar) || termchar != ' ')
goto bogus;
scanptr->Ss = (int) val;
if (! read_scan_integer(fp, &val, &termchar) || termchar != ' ')
goto bogus;
scanptr->Se = (int) val;
if (! read_scan_integer(fp, &val, &termchar) || termchar != ' ')
goto bogus;
scanptr->Ah = (int) val;
if (! read_scan_integer(fp, &val, &termchar))
goto bogus;
scanptr->Al = (int) val;
} else {
/* set non-progressive parameters */
scanptr->Ss = 0;
scanptr->Se = DCTSIZE2-1;
scanptr->Ah = 0;
scanptr->Al = 0;
}
if (termchar != ';' && termchar != EOF) {
bogus:
fprintf(stderr, "Invalid scan entry format in file %s\n", filename);
fclose(fp);
return FALSE;
}
scanptr++, scanno++;
}
if (termchar != EOF) {
fprintf(stderr, "Non-numeric data in file %s\n", filename);
fclose(fp);
return FALSE;
}
if (scanno > 0) {
/* Stash completed scan list in cinfo structure.
* NOTE: for cjpeg's use, JPOOL_IMAGE is the right lifetime for this data,
* but if you want to compress multiple images you'd want JPOOL_PERMANENT.
*/
scanptr = (jpeg_scan_info *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
scanno * SIZEOF(jpeg_scan_info));
MEMCOPY(scanptr, scans, scanno * SIZEOF(jpeg_scan_info));
cinfo->scan_info = scanptr;
cinfo->num_scans = scanno;
}
fclose(fp);
return TRUE;
}
#endif /* C_MULTISCAN_FILES_SUPPORTED */
GLOBAL boolean
set_quant_slots (j_compress_ptr cinfo, char *arg)
/* Process a quantization-table-selectors parameter string, of the form
* N[,N,...]
* If there are more components than parameters, the last value is replicated.
*/
{
int val = 0; /* default table # */
int ci;
char ch;
for (ci = 0; ci < MAX_COMPONENTS; ci++) {
if (*arg) {
ch = ','; /* if not set by sscanf, will be ',' */
if (sscanf(arg, "%d%c", &val, &ch) < 1)
return FALSE;
if (ch != ',') /* syntax check */
return FALSE;
if (val < 0 || val >= NUM_QUANT_TBLS) {
fprintf(stderr, "JPEG quantization tables are numbered 0..%d\n",
NUM_QUANT_TBLS-1);
return FALSE;
}
cinfo->comp_info[ci].quant_tbl_no = val;
while (*arg && *arg++ != ',') /* advance to next segment of arg string */
;
} else {
/* reached end of parameter, set remaining components to last table */
cinfo->comp_info[ci].quant_tbl_no = val;
}
}
return TRUE;
}
GLOBAL boolean
set_sample_factors (j_compress_ptr cinfo, char *arg)
/* Process a sample-factors parameter string, of the form
* HxV[,HxV,...]
* If there are more components than parameters, "1x1" is assumed for the rest.
*/
{
int ci, val1, val2;
char ch1, ch2;
for (ci = 0; ci < MAX_COMPONENTS; ci++) {
if (*arg) {
ch2 = ','; /* if not set by sscanf, will be ',' */
if (sscanf(arg, "%d%c%d%c", &val1, &ch1, &val2, &ch2) < 3)
return FALSE;
if ((ch1 != 'x' && ch1 != 'X') || ch2 != ',') /* syntax check */
return FALSE;
if (val1 <= 0 || val1 > 4 || val2 <= 0 || val2 > 4) {
fprintf(stderr, "JPEG sampling factors must be 1..4\n");
return FALSE;
}
cinfo->comp_info[ci].h_samp_factor = val1;
cinfo->comp_info[ci].v_samp_factor = val2;
while (*arg && *arg++ != ',') /* advance to next segment of arg string */
;
} else {
/* reached end of parameter, set remaining components to 1x1 sampling */
cinfo->comp_info[ci].h_samp_factor = 1;
cinfo->comp_info[ci].v_samp_factor = 1;
}
}
return TRUE;
}

17
rdtarga.c
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@ -1,7 +1,7 @@
/*
* rdtarga.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -76,10 +76,10 @@ typedef struct _tga_source_struct {
/* For expanding 5-bit pixel values to 8-bit with best rounding */
static const UINT8 c5to8bits[32] = {
0, 8, 16, 24, 32, 41, 49, 57,
65, 74, 82, 90, 98, 106, 115, 123,
131, 139, 148, 156, 164, 172, 180, 189,
197, 205, 213, 222, 230, 238, 246, 255
0, 8, 16, 25, 33, 41, 49, 58,
66, 74, 82, 90, 99, 107, 115, 123,
132, 140, 148, 156, 165, 173, 181, 189,
197, 206, 214, 222, 230, 239, 247, 255
};
@ -282,7 +282,8 @@ get_memory_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
/* Fetch that row from virtual array */
source->pub.buffer = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->whole_image, source_row, FALSE);
((j_common_ptr) cinfo, source->whole_image,
source_row, (JDIMENSION) 1, FALSE);
source->current_row++;
return 1;
@ -310,7 +311,7 @@ preload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
(*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
}
source->pub.buffer = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, source->whole_image, row, TRUE);
((j_common_ptr) cinfo, source->whole_image, row, (JDIMENSION) 1, TRUE);
(*source->get_pixel_rows) (cinfo, sinfo);
}
if (progress != NULL)
@ -421,7 +422,7 @@ start_input_tga (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
if (is_bottom_up) {
/* Create a virtual array to buffer the upside-down image. */
source->whole_image = (*cinfo->mem->request_virt_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
(JDIMENSION) width * components, (JDIMENSION) height, (JDIMENSION) 1);
if (cinfo->progress != NULL) {
cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress;

147
structure.doc
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@ -36,16 +36,15 @@ otherwise result.)
The IJG distribution contains two parts:
* A subroutine library for JPEG compression and decompression.
* cjpeg/djpeg, two simple applications that use the library to transform
* cjpeg/djpeg, two sample applications that use the library to transform
JFIF JPEG files to and from several other image formats.
cjpeg/djpeg are of no great intellectual complexity: they merely add a simple
command-line user interface and I/O routines for several uncompressed image
formats. This document concentrates on the library itself.
We desire the library to be capable of supporting all JPEG baseline and
extended sequential DCT processes. Progressive processes are also allowed
for in the system architecture, although they are not likely to be
implemented very soon. Hierarchical processes are not supported.
We desire the library to be capable of supporting all JPEG baseline, extended
sequential, and progressive DCT processes. Hierarchical processes are not
supported.
The library does not support the lossless (spatial) JPEG process. Lossless
JPEG shares little or no code with lossy JPEG, and would normally be used
@ -67,9 +66,8 @@ extending the library to include it would be straightforward.
By itself, the library handles only interchange JPEG datastreams --- in
particular the widely used JFIF file format. The library can be used by
surrounding code to process interchange or abbreviated JPEG datastreams that
are embedded in more complex file formats. (For example, we anticipate that
Sam Leffler's TIFF library will use this code to support the revised TIFF
JPEG format.)
are embedded in more complex file formats. (For example, libtiff uses this
library to implement JPEG compression within the TIFF file format.)
The library includes a substantial amount of code that is not covered by the
JPEG standard but is necessary for typical applications of JPEG. These
@ -133,13 +131,12 @@ Looking more closely, the compressor library contains the following main
elements:
Preprocessing:
* Color space conversion (e.g., RGB to YCbCr). This step may also
provide gamma adjustment.
* Color space conversion (e.g., RGB to YCbCr).
* Edge expansion and downsampling. Optionally, this step can do simple
smoothing --- this is often helpful for low-quality source data.
JPEG proper:
* MCU assembly, DCT, quantization.
* Entropy coding (Huffman or arithmetic).
* Entropy coding (sequential or progressive, Huffman or arithmetic).
In addition to these modules we need overall control, marker generation,
and support code (memory management & error handling). There is also a
@ -150,16 +147,16 @@ do something else with the data.
The decompressor library contains the following main elements:
JPEG proper:
* Entropy decoding (Huffman or arithmetic).
* Entropy decoding (sequential or progressive, Huffman or arithmetic).
* Dequantization, inverse DCT, MCU disassembly.
Postprocessing:
* Upsampling. Optionally, this step may be able to do more general
rescaling of the image.
* Color space conversion (e.g., YCbCr to RGB). This step may also
provide gamma adjustment.
provide gamma adjustment [ currently it does not ].
* Optional color quantization (e.g., reduction to 256 colors).
* Optional color precision reduction (e.g., 24-bit to 15-bit color).
[Not implemented in v5.]
[This feature is not currently implemented.]
We also need overall control, marker parsing, and a data source module.
The support code (memory management & error handling) can be shared with
@ -186,9 +183,11 @@ additional dummy blocks may be used to fill out MCUs, but the MCU assembly and
disassembly logic will create or discard these blocks internally. (This is
advantageous for speed reasons, since we avoid DCTing the dummy blocks.
It also permits a small reduction in file size, because the compressor can
choose dummy block contents so as to minimize their size in compressed form.)
Applications that wish to deal directly with the downsampled data must provide
similar buffering and padding for odd-sized images.
choose dummy block contents so as to minimize their size in compressed form.
Finally, it makes the interface buffer specification independent of whether
the file is actually interleaved or not.) Applications that wish to deal
directly with the downsampled data must provide similar buffering and padding
for odd-sized images.
*** Poor man's object-oriented programming ***
@ -366,11 +365,17 @@ The objects shown above are:
one fully interleaved MCU row of subsampled data is processed per call,
even when the JPEG file is noninterleaved.
* Forward DCT and quantization: Perform DCT, quantize, and emit coefficients
in zigzag block order. Works on one or more DCT blocks at a time.
* Forward DCT and quantization: Perform DCT, quantize, and emit coefficients.
Works on one or more DCT blocks at a time. (Note: the coefficients are now
emitted in normal array order, which the entropy encoder is expected to
convert to zigzag order as necessary. Prior versions of the IJG code did
the conversion to zigzag order within the quantization step.)
* Entropy encoding: Perform Huffman or arithmetic entropy coding and emit the
coded data to the data destination module. Works on one MCU per call.
For progressive JPEG, the same DCT blocks are fed to the entropy coder
during each pass, and the coder must emit the appropriate subset of
coefficients.
In addition to the above objects, the compression library includes these
objects:
@ -444,6 +449,9 @@ shown are:
* Entropy decoding: Read coded data from the data source module and perform
Huffman or arithmetic entropy decoding. Works on one MCU per call.
For progressive JPEG decoding, the coefficient controller supplies the prior
coefficients of each MCU (initially all zeroes), which the entropy decoder
modifies in each scan.
* Dequantization and inverse DCT: like it says. Note that the coefficients
buffered by the coefficient controller have NOT been dequantized; we
@ -492,7 +500,9 @@ In addition to the above objects, the decompression library includes these
objects:
* Master control: determines the number of passes required, controls overall
and per-pass initialization of the other modules.
and per-pass initialization of the other modules. This is subdivided into
input and output control: jdinput.c controls only input-side processing,
while jdmaster.c handles overall initialization and output-side control.
* Marker reading: decodes JPEG markers (except for RSTn).
@ -511,6 +521,54 @@ As with compression, the data source manager, error handler, and progress
monitor are candidates for replacement by a surrounding application.
*** Decompression input and output separation ***
To support efficient incremental display of progressive JPEG files, the
decompressor is divided into two sections that can run independently:
1. Data input includes marker parsing, entropy decoding, and input into the
coefficient controller's DCT coefficient buffer. Note that this
processing is relatively cheap and fast.
2. Data output reads from the DCT coefficient buffer and performs the IDCT
and all postprocessing steps.
For a progressive JPEG file, the data input processing is allowed to get
arbitrarily far ahead of the data output processing. (This occurs only
if the application calls jpeg_consume_input(); otherwise input and output
run in lockstep, since the input section is called only when the output
section needs more data.) In this way the application can avoid making
extra display passes when data is arriving faster than the display pass
can run. Furthermore, it is possible to abort an output pass without
losing anything, since the coefficient buffer is read-only as far as the
output section is concerned. See libjpeg.doc for more detail.
A full-image coefficient array is only created if the JPEG file has multiple
scans (or if the application specifies buffered-image mode anyway). When
reading a single-scan file, the coefficient controller normally creates only
a one-MCU buffer, so input and output processing must run in lockstep in this
case. jpeg_consume_input() is effectively a no-op in this situation.
The main impact of dividing the decompressor in this fashion is that we must
be very careful with shared variables in the cinfo data structure. Each
variable that can change during the course of decompression must be
classified as belonging to data input or data output, and each section must
look only at its own variables. For example, the data output section may not
depend on any of the variables that describe the current scan in the JPEG
file, because these may change as the data input section advances into a new
scan.
The progress monitor is (somewhat arbitrarily) defined to treat input of the
file as one pass when buffered-image mode is not used, and to ignore data
input work completely when buffered-image mode is used. Note that the
library has no reliable way to predict the number of passes when dealing
with a progressive JPEG file, nor can it predict the number of output passes
in buffered-image mode. So the work estimate is inherently bogus anyway.
No comparable division is currently made in the compression library, because
there isn't any real need for it.
*** Data formats ***
Arrays of pixel sample values use the following data structure:
@ -618,11 +676,11 @@ empty or refill the buffer at arbitrary times. Instead the application would
like to have control return from the library at buffer overflow/underrun, and
then resume compression or decompression at a later time.
This scenario is supported for simple cases, namely, single-pass processing
of single-scan JPEG files. (For anything more complex, we recommend that the
application "bite the bullet" and develop real multitasking capability.) The
libjpeg.doc file goes into more detail about the usage and limitations of
this capability; here we address the implications for library structure.
This scenario is supported for simple cases. (For anything more complex, we
recommend that the application "bite the bullet" and develop real multitasking
capability.) The libjpeg.doc file goes into more detail about the usage and
limitations of this capability; here we address the implications for library
structure.
The essence of the problem is that the entropy codec (coder or decoder) must
be prepared to stop at arbitrary times. In turn, the controllers that call
@ -648,14 +706,17 @@ specified so as to make this possible. This also implies that the data buffer
must be large enough to hold a worst-case compressed MCU; a couple thousand
bytes should be enough.
This design would probably not work for an arithmetic codec, since its
In a successive-approximation AC refinement scan, the progressive Huffman
decoder has to be able to undo assignments of newly nonzero coefficients if it
suspends before the MCU is complete, since decoding requires distinguishing
previously-zero and previously-nonzero coefficients. This is a bit tedious
but probably won't have much effect on performance. Other variants of Huffman
decoding need not worry about this, since they will just store the same values
again if forced to repeat the MCU.
This approach would probably not work for an arithmetic codec, since its
modifiable state is quite large and couldn't be copied cheaply. Instead it
would have to suspend and resume exactly at the point of the buffer end.
Also, a progressive JPEG decoder would have some problems with having already
updated the output DCT coefficient buffer, since progressive decoding depends
on the prior state of the coefficient buffer. This case might also have to be
handled by exact restart. Currently I expect that IJG will just not support
suspendable operation in these cases (when and if we implement them at all).
The JPEG marker reader is designed to cope with suspension at an arbitrary
point. It does so by backing up to the start of the marker parameter segment,
@ -670,7 +731,7 @@ this is not necessary; it is much easier simply to require the application to
ensure there is enough buffer space before starting. (An empty 2K buffer is
more than sufficient for the header markers; and ensuring there are a dozen or
two bytes available before calling jpeg_finish_compress() will suffice for the
trailer.) Again, this would not work for writing multi-scan JPEG files, but
trailer.) This would not work for writing multi-scan JPEG files, but
we simply do not intend to support that capability with suspension.
@ -747,10 +808,10 @@ grounds that it isn't worth the trouble.)
To support all this, we establish the following protocol for doing business
with the memory manager:
1. Modules must request virtual arrays (which may have only image lifespan)
during the global selection phase, i.e., in their jinit_xxx routines.
during the initial setup phase, i.e., in their jinit_xxx routines.
2. All "large" objects (including JSAMPARRAYs and JBLOCKARRAYs) must also be
allocated at global selection time.
3. realize_virt_arrays will be called at the completion of global selection.
allocated during initial setup.
3. realize_virt_arrays will be called at the completion of initial setup.
The above conventions ensure that sufficient information is available
for it to choose a good size for virtual array buffers.
Small objects of any lifespan may be allocated at any time. We expect that
@ -762,6 +823,22 @@ infinite, thus causing realize_virt_arrays to decide that it can allocate all
the virtual arrays as full-size in-memory buffers. The overhead of the
virtual-array access protocol is very small when no swapping occurs.
A virtual array can be specified to be "pre-zeroed"; when this flag is set,
never-yet-written sections of the array are set to zero before being made
available to the caller. If this flag is not set, never-written sections
of the array contain garbage. (This feature exists primarily because the
equivalent logic would otherwise be needed in jdcoefct.c for progressive
JPEG mode; we may as well make it available for possible other uses.)
The first write pass on a virtual array is required to occur in top-to-bottom
order; read passes, as well as any write passes after the first one, may
access the array in any order. This restriction exists partly to simplify
the virtual array control logic, and partly because some file systems may not
support seeking beyond the current end-of-file in a temporary file. The main
implication of this restriction is that rearrangement of rows (such as
converting top-to-bottom data order to bottom-to-top) must be handled while
reading data out of the virtual array, not while putting it in.
*** Memory manager internal structure ***

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89
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@ -2,12 +2,12 @@ USAGE instructions for the Independent JPEG Group's JPEG software
=================================================================
This file describes usage of the JPEG conversion programs cjpeg and djpeg,
as well as the utility programs rdjpgcom and wrjpgcom. (See the other
documentation files if you wish to use the JPEG library within your own
programs.)
as well as the utility programs jpegtran, rdjpgcom and wrjpgcom. (See
the other documentation files if you wish to use the JPEG library within
your own programs.)
If you are on a Unix machine you may prefer to read the Unix-style manual
pages in files cjpeg.1, djpeg.1, rdjpgcom.1, wrjpgcom.1.
pages in files cjpeg.1, djpeg.1, jpegtran.1, rdjpgcom.1, wrjpgcom.1.
INTRODUCTION
@ -94,6 +94,8 @@ The basic command line switches for cjpeg are:
memory. Image quality and speed of decompression are
unaffected by -optimize.
-progressive Create progressive JPEG file (see below).
-targa Input file is Targa format. Targa files that contain
an "identification" field will not be automatically
recognized by cjpeg; for such files you must specify
@ -110,7 +112,7 @@ often about right. If you see defects at -quality 75, then go up 5 or 10
counts at a time until you are happy with the output image. (The optimal
setting will vary from one image to another.)
-quality 100 will generate a quantization table of all 1's, eliminating loss
-quality 100 will generate a quantization table of all 1's, minimizing loss
in the quantization step (but there is still information loss in subsampling,
as well as roundoff error). This setting is mainly of interest for
experimental purposes. Quality values above about 95 are NOT recommended for
@ -122,9 +124,19 @@ of low image quality. Settings around 5 to 10 might be useful in preparing an
index of a large image library, for example. Try -quality 2 (or so) for some
amusing Cubist effects. (Note: quality values below about 25 generate 2-byte
quantization tables, which are considered optional in the JPEG standard.
cjpeg emits a warning message when you give such a quality value, because
some commercial JPEG programs may be unable to decode the resulting file.
Use -baseline if you need to ensure compatibility at low quality values.)
cjpeg emits a warning message when you give such a quality value, because some
other JPEG programs may be unable to decode the resulting file. Use -baseline
if you need to ensure compatibility at low quality values.)
The -progressive switch creates a "progressive JPEG" file. In this type of
JPEG file, the data is stored in multiple scans of increasing quality. If the
file is being transmitted over a slow communications link, the decoder can use
the first scan to display a low-quality image very quickly, and can then
improve the display with each subsequent scan. The final image is exactly
equivalent to a standard JPEG file of the same quality setting, and the total
file size is about the same --- often a little smaller. CAUTION: progressive
JPEG is not yet widely implemented, so many decoders will be unable to view a
progressive JPEG file at all.
Switches for advanced users:
@ -172,38 +184,23 @@ will visibly blur the image, however.
Switches for wizards:
-arithmetic Use arithmetic coding rather than Huffman coding.
(Not currently supported for legal reasons.)
-baseline Force a baseline JPEG file to be generated. This
clamps quantization values to 8 bits even at low
quality settings.
-nointerleave Generate noninterleaved JPEG file (not yet supported).
-qtables file Use the quantization tables given in the specified
file. The file should contain one to four tables
(64 values each) as plain text. Comments preceded by
'#' may be included in the file. The tables are
implicitly numbered 0,1,etc. If -quality N is also
specified, the values in the file are scaled according
to cjpeg's quality scaling curve.
text file.
-qslots N[,...] Select which quantization table to use for each color
component. By default, table 0 is used for luminance
and table 1 for chrominance components.
component.
-sample HxV[,...] Set JPEG sampling factors. If you specify
fewer H/V pairs than there are components, the
remaining components are set to 1x1 sampling. The
default setting is equivalent to "-sample 2x2".
-sample HxV[,...] Set JPEG sampling factors for each color component.
-scans file Use the scan script given in the specified text file.
The "wizard" switches are intended for experimentation with JPEG. If you
don't know what you are doing, DON'T USE THEM. You can easily produce files
with worse image quality and/or poorer compression than you'll get from the
default settings. Furthermore, these switches should not be used when making
files intended for general use, because not all JPEG implementations will
support unusual JPEG parameter settings.
don't know what you are doing, DON'T USE THEM. These switches are documented
further in the file wizard.doc.
DJPEG DETAILS
@ -329,7 +326,8 @@ you are ready to file the image away.
The -optimize option to cjpeg is worth using when you are making a "final"
version for posting or archiving. It's also a win when you are using low
quality settings to make very small JPEG files; the percentage improvement
is often a lot more than it is on larger files.
is often a lot more than it is on larger files. (At present, -optimize
mode is always selected when generating progressive JPEG files.)
HINTS FOR DJPEG
@ -364,8 +362,8 @@ determined by -maxmemory), temporary files will be used. (MS-DOS versions
will try to get extended or expanded memory first.) The temporary files are
often rather large: in typical cases they occupy three bytes per pixel, for
example 3*800*600 = 1.44Mb for an 800x600 image. If you don't have enough
free disk space, leave out -optimize (for cjpeg) or specify -onepass (for
djpeg).
free disk space, leave out -progressive and -optimize (for cjpeg) or specify
-onepass (for djpeg).
On MS-DOS, the temporary files are created in the directory named by the TMP
or TEMP environment variable, or in the current directory if neither of those
@ -390,6 +388,31 @@ DOS-specific versions of this software do their own memory space estimation
and do not need you to specify -maxmemory.
JPEGTRAN
jpegtran translates JPEG files from one variant of JPEG to another, for
example from baseline JPEG to progressive JPEG or vice versa. The
transformation is lossless: no image degradation occurs, which would not
be true if you used djpeg followed by cjpeg. However, you cannot alter
the image quality, because that would not be a lossless operation.
jpegtran operates similarly to cjpeg, except that it reads a JPEG file
and writes another JPEG file.
jpegtran accepts a subset of the switches recognized by cjpeg:
-outfile filename
-optimize
-progressive
-restart N
-scans file
-maxmemory N
-verbose
-debug
See the previous discussion of cjpeg for details about these switches.
If you specify no switches, you get a plain baseline-JPEG output file.
THE COMMENT UTILITIES
The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file.

207
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@ -0,0 +1,207 @@
Advanced usage instructions for the Independent JPEG Group's JPEG software
==========================================================================
This file describes cjpeg's "switches for wizards".
The "wizard" switches are intended for experimentation with JPEG by persons
who are reasonably knowledgeable about the JPEG standard. If you don't know
what you are doing, DON'T USE THESE SWITCHES. You'll likely produce files
with worse image quality and/or poorer compression than you'd get from the
default settings. Furthermore, these switches must be used with caution
when making files intended for general use, because not all JPEG decoders
will support unusual JPEG parameter settings.
Quantization Table Adjustment
-----------------------------
Ordinarily, cjpeg starts with a default set of tables (the same ones given
as examples in the JPEG standard) and scales them up or down according to
the -quality setting. The details of the scaling algorithm can be found in
jcparam.c. At very low quality settings, some quantization table entries
can get scaled up to values exceeding 255. Although 2-byte quantization
values are supported by the IJG software, this feature is not in baseline
JPEG and is not supported by all implementations. If you need to ensure
wide compatibility of low-quality files, you can constrain the scaled
quantization values to no more than 255 by giving the -baseline switch.
Note that use of -baseline will result in poorer quality for the same file
size, since more bits than necessary are expended on higher AC coefficients.
You can substitute a different set of quantization values by using the
-qtables switch:
-qtables file Use the quantization tables given in the named file.
The specified file should be a text file containing decimal quantization
values. The file should contain one to four tables, each of 64 elements.
The tables are implicitly numbered 0,1,etc. in order of appearance. Table
entries appear in normal array order (NOT in the zigzag order in which they
will be stored in the JPEG file).
Quantization table files are free format, in that arbitrary whitespace can
appear between numbers. Also, comments can be included: a comment starts
with '#' and extends to the end of the line. Here is an example file that
duplicates the default quantization tables:
# Quantization tables given in JPEG spec, section K.1
# This is table 0 (the luminance table):
16 11 10 16 24 40 51 61
12 12 14 19 26 58 60 55
14 13 16 24 40 57 69 56
14 17 22 29 51 87 80 62
18 22 37 56 68 109 103 77
24 35 55 64 81 104 113 92
49 64 78 87 103 121 120 101
72 92 95 98 112 100 103 99
# This is table 1 (the chrominance table):
17 18 24 47 99 99 99 99
18 21 26 66 99 99 99 99
24 26 56 99 99 99 99 99
47 66 99 99 99 99 99 99
99 99 99 99 99 99 99 99
99 99 99 99 99 99 99 99
99 99 99 99 99 99 99 99
99 99 99 99 99 99 99 99
If the -qtables switch is used without -quality, then the specified tables
are used exactly as-is. If both -qtables and -quality are used, then the
tables taken from the file are scaled in the same fashion that the default
tables would be scaled for that quality setting. If -baseline appears, then
the quantization values are constrained to the range 1-255.
By default, cjpeg will use quantization table 0 for luminance components and
table 1 for chrominance components. To override this choice, use the -qslots
switch:
-qslots N[,...] Select which quantization table to use for
each color component.
The -qslots switch specifies a quantization table number for each color
component, in the order in which the components appear in the JPEG SOF marker.
For example, to create a separate table for each of Y,Cb,Cr, you could
provide a -qtables file that defines three quantization tables and say
"-qslots 0,1,2". If -qslots gives fewer table numbers than there are color
components, then the last table number is repeated as necessary.
Sampling Factor Adjustment
--------------------------
By default, cjpeg uses 2:1 horizontal and vertical downsampling when
compressing YCbCr data, and no downsampling for all other color spaces.
You can override this default with the -sample switch:
-sample HxV[,...] Set JPEG sampling factors for each color
component.
The -sample switch specifies the JPEG sampling factors for each color
component, in the order in which they appear in the JPEG SOF marker.
If you specify fewer HxV pairs than there are components, the remaining
components are set to 1x1 sampling. For example, the default YCbCr setting
is equivalent to "-sample 2x2,1x1,1x1", which can be abbreviated to
"-sample 2x2".
There are still some JPEG decoders in existence that support only 2x1
sampling (also called 4:2:2 sampling). Compatibility with such decoders can
be achieved by specifying "-sample 2x1". This is not recommended unless
really necessary, since it increases file size and encoding/decoding time
with very little quality gain.
Multiple Scan / Progression Control
-----------------------------------
By default, cjpeg emits a single-scan sequential JPEG file. The
-progressive switch generates a progressive JPEG file using a default series
of progression parameters. You can create multiple-scan sequential JPEG
files or progressive JPEG files with custom progression parameters by using
the -scans switch:
-scans file Use the scan sequence given in the named file.
The specified file should be a text file containing a "scan script".
The script specifies the contents and ordering of the scans to be emitted.
Each entry in the script defines one scan. A scan definition specifies
the components to be included in the scan, and for progressive JPEG it also
specifies the progression parameters Ss,Se,Ah,Al for the scan. Scan
definitions are separated by semicolons (';'). A semicolon after the last
scan definition is optional.
Each scan definition contains one to four component indexes, optionally
followed by a colon (':') and the four progressive-JPEG parameters. The
component indexes denote which color component(s) are to be transmitted in
the scan. Components are numbered in the order in which they appear in the
JPEG SOF marker, with the first component being numbered 0. (Note that these
indexes are not the "component ID" codes assigned to the components, just
positional indexes.)
If the progression parameters Ss,Se,Ah,Al are omitted, the values 0,63,0,0
are used, producing a sequential JPEG file. cjpeg automatically determines
whether the script represents a progressive or sequential file, by observing
whether Ss and Se values other than 0 and 63 appear. (The -progressive
switch is unnecessary and is ignored when -scans appears.) When specifying
progression parameters, the user must follow the JPEG restrictions on
progression parameters. (cjpeg checks that the spec's requirements are
obeyed.)
Scan script files are free format, in that arbitrary whitespace can appear
between numbers and around punctuation. Also, comments can be included: a
comment starts with '#' and extends to the end of the line. For additional
legibility, commas or dashes can be placed between values. (Actually, any
single punctuation character other than ':' or ';' can be inserted.) For
example, the following two scan definitions are equivalent:
0 1 2: 0 63 0 0;
0,1,2 : 0-63, 0,0 ;
Here is an example of a scan script that generates a partially interleaved
sequential JPEG file:
0; # Y only in first scan
1 2; # Cb and Cr in second scan
Here is an example of a progressive scan script using only spectral selection
(no successive approximation):
# Interleaved DC scan for Y,Cb,Cr:
0,1,2: 0-0, 0, 0 ;
# AC scans:
0: 1-2, 0, 0 ; # First two Y AC coefficients
0: 3-5, 0, 0 ; # Three more
1: 1-63, 0, 0 ; # All AC coefficients for Cb
2: 1-63, 0, 0 ; # All AC coefficients for Cr
0: 6-9, 0, 0 ; # More Y coefficients
0: 10-63, 0, 0 ; # Remaining Y coefficients
Here is an example of a successive-approximation script. This is equivalent
to the default script used by "cjpeg -progressive" for YCbCr images:
# Initial DC scan for Y,Cb,Cr (lowest bit not sent)
0,1,2: 0-0, 0, 1 ;
# First AC scan: send first 5 Y AC coefficients, minus 2 lowest bits:
0: 1-5, 0, 2 ;
# Send all Cr,Cb AC coefficients, minus lowest bit:
# (chroma data is usually too small to be worth subdividing further;
# but note we send Cr first since eye is least sensitive to Cb)
2: 1-63, 0, 1 ;
1: 1-63, 0, 1 ;
# Send remaining Y AC coefficients, minus 2 lowest bits:
0: 6-63, 0, 2 ;
# Send next-to-lowest bit of all Y AC coefficients:
0: 1-63, 2, 1 ;
# At this point we've sent all but the lowest bit of all coefficients.
# Send lowest bit of DC coefficients
0,1,2: 0-0, 1, 0 ;
# Send lowest bit of AC coefficients
2: 1-63, 1, 0 ;
1: 1-63, 1, 0 ;
# Y AC lowest bit scan is last; it's usually the largest scan
0: 1-63, 1, 0 ;
It may be worth pointing out that this script is tuned for quality settings
of around 50 to 75. For lower quality settings, you'd probably want to use
a script with fewer stages of successive approximation (otherwise the
initial scans will be really bad). For higher quality settings, you might
want to use more stages of successive approximation (so that the initial
scans are not too large).

12
wrbmp.c
View File

@ -1,7 +1,7 @@
/*
* wrbmp.c
*
* Copyright (C) 1994, Thomas G. Lane.
* Copyright (C) 1994-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -80,7 +80,8 @@ put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
/* Access next row in virtual array */
image_ptr = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, dest->whole_image, dest->cur_output_row, TRUE);
((j_common_ptr) cinfo, dest->whole_image,
dest->cur_output_row, (JDIMENSION) 1, TRUE);
dest->cur_output_row++;
/* Transfer data. Note destination values must be in BGR order
@ -114,7 +115,8 @@ put_gray_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
/* Access next row in virtual array */
image_ptr = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, dest->whole_image, dest->cur_output_row, TRUE);
((j_common_ptr) cinfo, dest->whole_image,
dest->cur_output_row, (JDIMENSION) 1, TRUE);
dest->cur_output_row++;
/* Transfer data. */
@ -363,7 +365,7 @@ finish_output_bmp (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)
(*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
}
image_ptr = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, dest->whole_image, row-1, FALSE);
((j_common_ptr) cinfo, dest->whole_image, row-1, (JDIMENSION) 1, FALSE);
data_ptr = image_ptr[0];
for (col = dest->row_width; col > 0; col--) {
putc(GETJSAMPLE(*data_ptr), outfile);
@ -421,7 +423,7 @@ jinit_write_bmp (j_decompress_ptr cinfo, boolean is_os2)
/* Allocate space for inversion array, prepare for write pass */
dest->whole_image = (*cinfo->mem->request_virt_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
row_width, cinfo->output_height, (JDIMENSION) 1);
dest->cur_output_row = 0;
if (cinfo->progress != NULL) {

3
wrjpgcom.1
View File

@ -1,4 +1,4 @@
.TH WRJPGCOM 1 "30 August 1994"
.TH WRJPGCOM 1 "15 June 1995"
.SH NAME
wrjpgcom \- insert text comments into a JPEG file
.SH SYNOPSIS
@ -97,6 +97,7 @@ or equivalently
.SH SEE ALSO
.BR cjpeg (1),
.BR djpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1)
.SH AUTHOR
Independent JPEG Group

2
wrjpgcom.c
View File

@ -150,7 +150,7 @@ copy_rest_of_file (void)
#define M_SOF0 0xC0 /* Start Of Frame N */
#define M_SOF1 0xC1 /* N indicates which compression process */
#define M_SOF2 0xC2 /* Only SOF0 and SOF1 are now in common use */
#define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */
#define M_SOF3 0xC3
#define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */
#define M_SOF6 0xC6

15
wrrle.c
View File

@ -1,7 +1,7 @@
/*
* wrrle.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@ -130,7 +130,7 @@ start_output_rle (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)
/* Set the output buffer to the first row */
dest->pub.buffer = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, dest->image, (JDIMENSION) 0, TRUE);
((j_common_ptr) cinfo, dest->image, (JDIMENSION) 0, (JDIMENSION) 1, TRUE);
dest->pub.buffer_height = 1;
dest->pub.put_pixel_rows = rle_put_pixel_rows;
@ -157,7 +157,8 @@ rle_put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
if (cinfo->output_scanline < cinfo->output_height) {
dest->pub.buffer = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, dest->image, cinfo->output_scanline, TRUE);
((j_common_ptr) cinfo, dest->image,
cinfo->output_scanline, (JDIMENSION) 1, TRUE);
}
}
@ -221,7 +222,8 @@ finish_output_rle (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)
if (cinfo->output_components == 1) {
for (row = cinfo->output_height-1; row >= 0; row--) {
rle_row = (rle_pixel **) (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, dest->image, (JDIMENSION) row, FALSE);
((j_common_ptr) cinfo, dest->image,
(JDIMENSION) row, (JDIMENSION) 1, FALSE);
rle_putrow(rle_row, (int) cinfo->output_width, &header);
#ifdef PROGRESS_REPORT
if (progress != NULL) {
@ -234,7 +236,8 @@ finish_output_rle (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)
for (row = cinfo->output_height-1; row >= 0; row--) {
rle_row = (rle_pixel **) dest->rle_row;
output_row = * (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, dest->image, (JDIMENSION) row, FALSE);
((j_common_ptr) cinfo, dest->image,
(JDIMENSION) row, (JDIMENSION) 1, FALSE);
red = rle_row[0];
green = rle_row[1];
blue = rle_row[2];
@ -292,7 +295,7 @@ jinit_write_rle (j_decompress_ptr cinfo)
/* Allocate a virtual array to hold the image. */
dest->image = (*cinfo->mem->request_virt_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
(JDIMENSION) (cinfo->output_width * cinfo->output_components),
cinfo->output_height, (JDIMENSION) 1);