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Imported from libpng-1.2.0rc1.tar

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This commit is contained in:
Glenn Randers-Pehrson 2001-08-25 06:46:06 -05:00
parent 1ea0ff34fa
commit 1b8e567237
53 changed files with 316 additions and 211 deletions
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10
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.2.0beta5 - August 8, 2001
Libpng 1.2.0rc1 - August 25, 2001
This is a public release of libpng, intended for use in production codes.
@ -12,19 +12,19 @@ Changes since the last public release (1.0.12):
Enabled user memory function by default.
Increased png_mng_features flag from png_byte to png_uint_32.
Bumped shared-library (so-number) and dll-number to 3.
Updated contrib/gregbook
Updated makefile.ibmc
Updated makefile.ibmc, makefile.gcmmx
Added some typecasts to eliminate gcc 3.0 warnings. Changed prototypes
of png_write_oFFS width and height from png_uint_32 to png_int_32.
Updated example.c
Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c
Revised makefile.gcmmx
Revised pnggccrd.c to conditionally compile some thread-unsafe code only
when PNG_THREAD_UNSAFE_OK is defined.
Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with
value exceeding 2^bit_depth-1
Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
Removed restriction that do_invert_mono only operate on 1-bit opaque files
Replaced calls to fprintf(stderr,...) with png_warning() or png_debug()
in pnggccrd.c
Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

3
CHANGES
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@ -977,6 +977,9 @@ version 1.2.0beta5 [August 8, 2001]
Revised makefile.sgi and makefile.sggcc
Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
Removed restriction that do_invert_mono only operate on 1-bit opaque files
version 1.2.0rc1 [August 25, 2001]
Changed a png_warning() to png_debug() in pnggccrd.c
Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

12
INSTALL
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@ -1,5 +1,5 @@
Installing libpng version 1.2.0beta5 - August 8, 2001
Installing libpng version 1.2.0rc1 - August 25, 2001
Before installing libpng, you must first install zlib. zlib
can usually be found wherever you got libpng. zlib can be
@ -10,7 +10,7 @@ zlib.h and zconf.h include files that correspond to the
version of zlib that's installed.
You can rename the directories that you downloaded (they
might be called "libpng-1.2.0beta5" or "lpng109" and "zlib-1.1.3"
might be called "libpng-1.2.0rc1" or "lpng109" and "zlib-1.1.3"
or "zlib113") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this:
@ -64,8 +64,8 @@ The files that are presently available in the scripts directory
include
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta5)
makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta5,
makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0rc1)
makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0rc1,
uses assembler code tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
@ -82,9 +82,9 @@ include
makefile.macosx => MACOS X Makefile
makefile.netbsd => NetBSD/cc makefile, uses PNGGCCRD
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta5)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.2.0rc1)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.0beta5)
makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.0rc1)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile

4
LICENSE
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@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following
this sentence.
libpng versions 1.0.7, July 1, 2000, through 1.2.0beta5, August 8, 2001, are
libpng versions 1.0.7, July 1, 2000, through 1.2.0rc1, August 25, 2001, are
Copyright (c) 2000 Glenn Randers-Pehrson
and are distributed according to the same disclaimer and license as libpng-1.0.6
with the following individuals added to the list of Contributing Authors
@ -99,4 +99,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
randeg@alum.rpi.edu
August 8, 2001
August 25, 2001

10
README
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@ -1,4 +1,4 @@
README for libpng 1.2.0beta5 - August 8, 2001 (shared library 2.1)
README for libpng 1.2.0rc1 - August 25, 2001 (shared library 2.1)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.
@ -187,9 +187,9 @@ Files in this distribution:
descrip.mms => VMS makefile for MMS or MMK
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.linux => Linux/ELF makefile
(gcc, creates libpng.so.2.1.2.0beta5)
(gcc, creates libpng.so.2.1.2.0rc1)
makefile.gcmmx => Linux/ELF makefile (gcc, creates
libpng.so.2.1.2.0beta5, uses assembler code
libpng.so.2.1.2.0rc1, uses assembler code
tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
@ -206,10 +206,10 @@ Files in this distribution:
makefile.macosx => MACOS X Makefile
makefile.netbsd => NetBSD/cc makefile, uses PNGGCCRD
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta5)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.2.0rc1)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng.so.2.1.2.0beta5)
(gcc, creates libpng.so.2.1.2.0rc1)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile

4
Y2KINFO
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@ -1,13 +1,13 @@
Y2K compliance in libpng:
=========================
August 8, 2001
August 25, 2001
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.0beta5 are Y2K compliant. It is my belief that earlier
upward through 1.2.0rc1 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer

2
configure vendored
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@ -1,5 +1,5 @@
echo "
There is no \"configure\" script for Libpng-1.2.0beta5. Instead, please
There is no \"configure\" script for Libpng-1.2.0rc1. Instead, please
copy the appropriate makefile for your system from the \"scripts\"
directory. Read the INSTALL file for more details.
"

6
contrib/gregbook/rpng-x.c
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@ -22,6 +22,7 @@
- 1.11: added extra set of parentheses to png_jmpbuf() macro; fixed
command-line parsing bug
- 1.12: fixed small X memory leak (thanks to Francois Petitjean)
- 1.13: fixed XFreeGC() crash bug
---------------------------------------------------------------------------
@ -52,7 +53,7 @@
#define PROGNAME "rpng-x"
#define LONGNAME "Simple PNG Viewer for X"
#define VERSION "1.12 of 28 May 2001"
#define VERSION "1.13 of 16 August 2001"
#include <stdio.h>
#include <stdlib.h>
@ -118,6 +119,7 @@ static Colormap colormap;
static int have_nondefault_visual = FALSE;
static int have_colormap = FALSE;
static int have_window = FALSE;
static int have_gc = FALSE;
/*
ulg numcolors=0, pixels[256];
ush reds[256], greens[256], blues[256];
@ -556,6 +558,7 @@ static int rpng_x_create_window(void)
XMapWindow(display, window);
gc = XCreateGC(display, window, 0, &gcvalues);
have_gc = TRUE;
/*---------------------------------------------------------------------------
Fill window with the specified background color.
@ -825,6 +828,7 @@ static void rpng_x_cleanup(void)
ximage = NULL;
}
if (have_gc)
XFreeGC(display, gc);
if (have_window)

6
contrib/gregbook/rpng2-x.c
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@ -27,6 +27,7 @@
- 1.12: added -pause option for demos and testing
- 1.20: added runtime MMX-enabling/disabling and new -mmx* options
- 1.21: fixed small X memory leak (thanks to Francois Petitjean)
- 1.22: fixed XFreeGC() crash bug
---------------------------------------------------------------------------
@ -57,7 +58,7 @@
#define PROGNAME "rpng2-x"
#define LONGNAME "Progressive PNG Viewer for X"
#define VERSION "1.21 of 30 May 2001"
#define VERSION "1.22 of 16 August 2001"
#include <stdio.h>
#include <stdlib.h>
@ -228,6 +229,7 @@ static Colormap colormap;
static int have_nondefault_visual = FALSE;
static int have_colormap = FALSE;
static int have_window = FALSE;
static int have_gc = FALSE;
@ -759,6 +761,7 @@ static int rpng2_x_create_window(void)
XMapWindow(display, window);
gc = XCreateGC(display, window, 0, &gcvalues);
have_gc = TRUE;
/*---------------------------------------------------------------------------
Allocate memory for the X- and display-specific version of the image.
@ -1374,6 +1377,7 @@ static void rpng2_x_cleanup(void)
ximage = NULL;
}
if (have_gc)
XFreeGC(display, gc);
if (have_window)

29
libpng.3
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@ -1,6 +1,6 @@
.TH LIBPNG 3 "August 8, 2001"
.TH LIBPNG 3 "August 25, 2001"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta5
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0rc1
.SH SYNOPSIS
\fI\fB
@ -787,7 +787,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
.SH LIBPNG.TXT
libpng.txt - A description on how to use and modify libpng
libpng version 1.2.0beta5 - August 8, 2001
libpng version 1.2.0rc1 - August 25, 2001
Updated and distributed by Glenn Randers-Pehrson
<randeg@alum.rpi.edu>
Copyright (c) 1998-2001 Glenn Randers-Pehrson
@ -1591,17 +1591,18 @@ changes the storage of the pixels to blue, green, red:
color_type == PNG_COLOR_TYPE_RGB_ALPHA)
png_set_bgr(png_ptr);
PNG files store RGB pixels packed into 3 bytes. This code expands them
into 4 bytes for windowing systems that need them in this format:
PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
into 4 or 8 bytes for windowing systems that need them in this format:
if (bit_depth == 8 && color_type ==
PNG_COLOR_TYPE_RGB) png_set_filler(png_ptr,
filler, PNG_FILLER_BEFORE);
if (color_type == PNG_COLOR_TYPE_RGB)
png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
where "filler" is the 8 or 16-bit number to fill with, and the location is
either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
you want the filler before the RGB or after. This transformation
does not affect images that already have full alpha channels.
does not affect images that already have full alpha channels. To add an
opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
will generate RGBA pixels.
If you are reading an image with an alpha channel, and you need the
data as ARGB instead of the normal PNG format RGBA:
@ -3613,13 +3614,13 @@ application:
.SH IX. Y2K Compliance in libpng
August 8, 2001
August 25, 2001
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.0beta5 are Y2K compliant. It is my belief that earlier
upward through 1.2.0rc1 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that
@ -3794,7 +3795,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.2.0beta5 - August 8, 2001:
Libpng version 1.2.0rc1 - August 25, 2001:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
@ -3811,7 +3812,7 @@ included in the libpng distribution, the latter shall prevail.)
If you modify libpng you may insert additional notices immediately following
this sentence.
libpng versions 1.0.7, July 1, 2000, through 1.2.0beta5, August 8, 2001, are
libpng versions 1.0.7, July 1, 2000, through 1.2.0rc1, August 25, 2001, are
Copyright (c) 2000-2001 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.0.6
with the following individuals added to the list of Contributing Authors
@ -3903,7 +3904,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
randeg@alum.rpi.edu
August 8, 2001
August 25, 2001
.\" end of man page

19
libpng.txt
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@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
libpng version 1.2.0beta5 - August 8, 2001
libpng version 1.2.0rc1 - August 25, 2001
Updated and distributed by Glenn Randers-Pehrson
<randeg@alum.rpi.edu>
Copyright (c) 1998-2001 Glenn Randers-Pehrson
@ -804,17 +804,18 @@ changes the storage of the pixels to blue, green, red:
color_type == PNG_COLOR_TYPE_RGB_ALPHA)
png_set_bgr(png_ptr);
PNG files store RGB pixels packed into 3 bytes. This code expands them
into 4 bytes for windowing systems that need them in this format:
PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
into 4 or 8 bytes for windowing systems that need them in this format:
if (bit_depth == 8 && color_type ==
PNG_COLOR_TYPE_RGB) png_set_filler(png_ptr,
filler, PNG_FILLER_BEFORE);
if (color_type == PNG_COLOR_TYPE_RGB)
png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
where "filler" is the 8 or 16-bit number to fill with, and the location is
either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
you want the filler before the RGB or after. This transformation
does not affect images that already have full alpha channels.
does not affect images that already have full alpha channels. To add an
opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
will generate RGBA pixels.
If you are reading an image with an alpha channel, and you need the
data as ARGB instead of the normal PNG format RGBA:
@ -2826,13 +2827,13 @@ application:
IX. Y2K Compliance in libpng
August 8, 2001
August 25, 2001
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.0beta5 are Y2K compliant. It is my belief that earlier
upward through 1.2.0rc1 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that

4
libpngpf.3
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@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "August 8, 2001"
.TH LIBPNGPF 3 "August 25, 2001"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta5
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0rc1
(private functions)
.SH SYNOPSIS
\fB#include <png.h>\fP

2
png.5
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@ -1,4 +1,4 @@
.TH PNG 5 "August 8, 2001"
.TH PNG 5 "August 25, 2001"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION

12
png.c
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* libpng version 1.2.0beta5 - August 8, 2001
* libpng version 1.2.0rc1 - August 25, 2001
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -13,14 +13,14 @@
#include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_0beta5 Your_png_h_is_not_version_1_2_0beta5;
typedef version_1_2_0rc1 Your_png_h_is_not_version_1_2_0rc1;
/* Version information for C files. This had better match the version
* string defined in png.h. */
#ifdef PNG_USE_GLOBAL_ARRAYS
/* png_libpng_ver was changed to a function in version 1.0.5c */
const char png_libpng_ver[18] = "1.2.0beta5";
const char png_libpng_ver[18] = "1.2.0rc1";
/* png_sig was changed to a function in version 1.0.5c */
/* Place to hold the signature string for a PNG file. */
@ -646,7 +646,7 @@ png_charp PNGAPI
png_get_copyright(png_structp png_ptr)
{
if (png_ptr != NULL || png_ptr == NULL) /* silence compiler warning */
return ((png_charp) "\n libpng version 1.2.0beta5 - August 8, 2001\n\
return ((png_charp) "\n libpng version 1.2.0rc1 - August 25, 2001\n\
Copyright (c) 1998-2001 Glenn Randers-Pehrson\n\
Copyright (c) 1996, 1997 Andreas Dilger\n\
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n");
@ -664,8 +664,8 @@ png_get_libpng_ver(png_structp png_ptr)
{
/* Version of *.c files used when building libpng */
if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */
return((png_charp) "1.2.0beta5");
return((png_charp) "1.2.0beta5");
return((png_charp) "1.2.0rc1");
return((png_charp) "1.2.0rc1");
}
png_charp PNGAPI

24
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.2.0beta5 - August 8, 2001
* libpng version 1.2.0rc1 - August 25, 2001
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -9,7 +9,7 @@
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.2.0beta5 - August 8, 2001: Glenn
* libpng versions 0.97, January 1998, through 1.2.0rc1 - August 25, 2001: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@ -105,7 +105,7 @@
* If you modify libpng you may insert additional notices immediately following
* this sentence.
*
* libpng versions 1.0.7, July 1, 2000, through 1.2.0beta5, August 8, 2001, are
* libpng versions 1.0.7, July 1, 2000, through 1.2.0rc1, August 25, 2001, are
* Copyright (c) 2000, 2001 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.0.6
* with the following individuals added to the list of Contributing Authors
@ -210,13 +210,13 @@
* Y2K compliance in libpng:
* =========================
*
* August 8, 2001
* August 25, 2001
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
*
* This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.2.0beta5 are Y2K compliant. It is my belief that earlier
* upward through 1.2.0rc1 are Y2K compliant. It is my belief that earlier
* versions were also Y2K compliant.
*
* Libpng only has three year fields. One is a 2-byte unsigned integer
@ -272,7 +272,7 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.2.0beta5"
#define PNG_LIBPNG_VER_STRING "1.2.0rc1"
#define PNG_LIBPNG_VER_SONUM 3
#define PNG_LIBPNG_VER_DLLNUM %DLLNUM%
@ -284,7 +284,7 @@
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */
#define PNG_LIBPNG_VER_BUILD 5
#define PNG_LIBPNG_VER_BUILD 1
#define PNG_LIBPNG_BUILD_ALPHA 1
#define PNG_LIBPNG_BUILD_BETA 2
@ -292,7 +292,7 @@
#define PNG_LIBPNG_BUILD_STABLE 4
#define PNG_LIBPNG_BUILD_TYPEMASK 7
#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with STABLE only */
#define PNG_LIBPNG_BUILD_TYPE 2
#define PNG_LIBPNG_BUILD_TYPE 3
/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
* We must not include leading zeros.
@ -1208,13 +1208,15 @@ struct png_struct_def
png_free_ptr free_fn; /* function for freeing memory */
#endif
png_bytep big_row_buf; /* buffer to save current (unfiltered) row */
};
/* This prevents a compiler error in png_get_copyright() in png.c if png.c
and png.h are both at version 1.2.0beta5
and png.h are both at version 1.2.0rc1
*/
typedef png_structp version_1_2_0beta5;
typedef png_structp version_1_2_0rc1;
typedef png_struct FAR * FAR * png_structpp;
@ -2331,7 +2333,7 @@ extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.2.0beta5 - August 8, 2001 (header)\n"
" libpng version 1.2.0rc1 - August 25, 2001 (header)\n"
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
/* With these routines we avoid an integer divide, which will be slower on

2
pngasmrd.h
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@ -1,6 +1,6 @@
/* pngasmrd.h - assembler version of utilities to read a PNG file
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 2001 Glenn Randers-Pehrson
*

2
pngconf.h
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@ -1,6 +1,6 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngerror.c
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@ -1,7 +1,7 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

279
pnggccrd.c
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@ -6,7 +6,7 @@
* and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
* for Intel's performance analysis of the MMX vs. non-MMX code.
*
* libpng version 1.2.0beta5 - August 8, 2001
* libpng version 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation
@ -2639,8 +2639,8 @@ png_do_read_interlace(png_structp png_ptr)
#ifdef PNG_DEBUG
if (dp < row || dp+3 > row+png_ptr->row_buf_size)
{
printf("dp out of bounds: row=%d, dp=%d, rp=%d\n",row, dp,
row+png_ptr->row_buf_size);
printf("dp out of bounds: row=%d, dp=%d, rp=%d\n",
row, dp, row+png_ptr->row_buf_size);
printf("row_buf=%d\n",png_ptr->row_buf_size);
}
#endif
@ -2849,53 +2849,76 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
"avg_3lp: \n\t"
"movq (%%edi,%%ecx,), %%mm0 \n\t" // load mm0 with Avg(x)
"movq %%mm5, %%mm3 \n\t"
"psrlq _ShiftRem, %%mm2 \n\t" // correct position Raw(x-bpp) data
"psrlq _ShiftRem, %%mm2 \n\t" // correct position Raw(x-bpp)
// data
"movq (%%esi,%%ecx,), %%mm1 \n\t" // load mm1 with Prior(x)
"movq %%mm7, %%mm6 \n\t"
"pand %%mm1, %%mm3 \n\t" // get lsb for each prev_row byte
"psrlq $1, %%mm1 \n\t" // divide prev_row bytes by 2
"pand %%mm4, %%mm1 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm0 \n\t" // add (Prev_row/2) to Avg for each byte
"pand %%mm4, %%mm1 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm0 \n\t" // add (Prev_row/2) to Avg for
// each byte
// add 1st active group (Raw(x-bpp)/2) to average with LBCarry
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte where both
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting
// LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte
// where both
// lsb's were == 1 (only valid for active group)
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 1 bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2)
// for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 1
// bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to
// Avg for each Active
// byte
// add 2nd active group (Raw(x-bpp)/2) to average with _LBCarry
"psllq _ShiftBpp, %%mm6 \n\t" // shift the mm6 mask to cover bytes 3-5
"psllq _ShiftBpp, %%mm6 \n\t" // shift the mm6 mask to cover
// bytes 3-5
"movq %%mm0, %%mm2 \n\t" // mov updated Raws to mm2
"psllq _ShiftBpp, %%mm2 \n\t" // shift data to pos. correctly
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte where both
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting
// LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte
// where both
// lsb's were == 1 (only valid for active group)
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2 bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2)
// for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2
// bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to
// Avg for each Active
// byte
// add 3rd active group (Raw(x-bpp)/2) to average with _LBCarry
"psllq _ShiftBpp, %%mm6 \n\t" // shift mm6 mask to cover last two
"psllq _ShiftBpp, %%mm6 \n\t" // shift mm6 mask to cover last
// two
// bytes
"movq %%mm0, %%mm2 \n\t" // mov updated Raws to mm2
"psllq _ShiftBpp, %%mm2 \n\t" // shift data to pos. correctly
// Data only needs to be shifted once here to
// get the correct x-bpp offset.
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte where both
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting
// LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte
// where both
// lsb's were == 1 (only valid for active group)
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2 bytes to add to Avg
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2)
// for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2
// bytes to add to Avg
"addl $8, %%ecx \n\t"
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to
// Avg for each Active
// byte
// now ready to write back to memory
"movq %%mm0, -8(%%edi,%%ecx,) \n\t"
@ -2933,7 +2956,8 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
"movq _HBClearMask, %%mm4 \n\t"
// re-init address pointers and offset
"movl _dif, %%ecx \n\t" // ecx: x = offset to alignment boundary
"movl _dif, %%ecx \n\t" // ecx: x = offset to
// alignment boundary
// load _ActiveMask and clear all bytes except for 1st active group
"movq _ActiveMask, %%mm7 \n\t"
@ -2942,7 +2966,8 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
// preload "movl prev_row, %%esi \n\t" // esi: Prior(x)
"movq %%mm7, %%mm6 \n\t"
"movq _LBCarryMask, %%mm5 \n\t"
"psllq _ShiftBpp, %%mm6 \n\t" // create mask for 2nd active group
"psllq _ShiftBpp, %%mm6 \n\t" // create mask for 2nd active
// group
// prime the pump: load the first Raw(x-bpp) data set
"movq -8(%%edi,%%ecx,), %%mm2 \n\t" // load previous aligned 8 bytes
@ -2955,30 +2980,44 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
"movq %%mm5, %%mm3 \n\t"
"pand %%mm1, %%mm3 \n\t" // get lsb for each prev_row byte
"psrlq $1, %%mm1 \n\t" // divide prev_row bytes by 2
"pand %%mm4, %%mm1 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm0 \n\t" // add (Prev_row/2) to Avg for each byte
"pand %%mm4, %%mm1 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm0 \n\t" // add (Prev_row/2) to Avg for
// each byte
// add 1st active group (Raw(x-bpp)/2) to average with _LBCarry
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte where both
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting
// LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte
// where both
// lsb's were == 1 (only valid for active group)
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
"pand %%mm7, %%mm2 \n\t" // leave only Active Group 1 bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2)
// for each byte
"pand %%mm7, %%mm2 \n\t" // leave only Active Group 1
// bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg
// for each Active
// byte
// add 2nd active group (Raw(x-bpp)/2) to average with _LBCarry
"movq %%mm0, %%mm2 \n\t" // mov updated Raws to mm2
"psllq _ShiftBpp, %%mm2 \n\t" // shift data to pos. correctly
"addl $8, %%ecx \n\t"
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte where both
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting
// LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte
// where both
// lsb's were == 1 (only valid for active group)
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2 bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg for each Active
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2)
// for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2
// bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to
// Avg for each Active
// byte
"cmpl _MMXLength, %%ecx \n\t"
// now ready to write back to memory
@ -3012,7 +3051,8 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
// load _ActiveMask
"movq _ActiveMask, %%mm7 \n\t"
// re-init address pointers and offset
"movl _dif, %%ecx \n\t" // ecx: x = offset to alignment boundary
"movl _dif, %%ecx \n\t" // ecx: x = offset to alignment
// boundary
"movq _LBCarryMask, %%mm5 \n\t"
// preload "movl row, %%edi \n\t" // edi: Avg(x)
"movq _HBClearMask, %%mm4 \n\t"
@ -3029,59 +3069,91 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
"movq %%mm5, %%mm3 \n\t"
"pand %%mm1, %%mm3 \n\t" // get lsb for each prev_row byte
"psrlq $1, %%mm1 \n\t" // divide prev_row bytes by 2
"pand %%mm4, %%mm1 \n\t" // clear invalid bit 7 of each byte
"pand %%mm4, %%mm1 \n\t" // clear invalid bit 7 of each
// byte
"movq %%mm7, %%mm6 \n\t"
"paddb %%mm1, %%mm0 \n\t" // add (Prev_row/2) to Avg for each byte
"paddb %%mm1, %%mm0 \n\t" // add (Prev_row/2) to Avg for
// each byte
// add 1st active group (Raw(x-bpp)/2) to average with _LBCarry
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte where both
// lsb's were == 1 (only valid for active group)
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting
// LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte
// where both
// lsb's were == 1 (only valid
// for active group)
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 1 bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg for each Active byte
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2)
// for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 1
// bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg
// for each Active byte
// add 2nd active group (Raw(x-bpp)/2) to average with _LBCarry
"psllq _ShiftBpp, %%mm6 \n\t" // shift the mm6 mask to cover bytes 2 & 3
"psllq _ShiftBpp, %%mm6 \n\t" // shift the mm6 mask to cover
// bytes 2 & 3
"movq %%mm0, %%mm2 \n\t" // mov updated Raws to mm2
"psllq _ShiftBpp, %%mm2 \n\t" // shift data to pos. correctly
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte where both
// lsb's were == 1 (only valid for active group)
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting
// LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte
// where both
// lsb's were == 1 (only valid
// for active group)
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2 bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg for each Active byte
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2)
// for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2
// bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to
// Avg for each Active byte
// add 3rd active group (Raw(x-bpp)/2) to average with _LBCarry
"psllq _ShiftBpp, %%mm6 \n\t" // shift the mm6 mask to cover bytes 4 & 5
"psllq _ShiftBpp, %%mm6 \n\t" // shift the mm6 mask to cover
// bytes 4 & 5
"movq %%mm0, %%mm2 \n\t" // mov updated Raws to mm2
"psllq _ShiftBpp, %%mm2 \n\t" // shift data to pos. correctly
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte where both
// lsb's were == 1 (only valid for active group)
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting
// LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte
// where both lsb's were == 1
// (only valid for active group)
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2 bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg for each Active byte
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2)
// for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2
// bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to
// Avg for each Active byte
// add 4th active group (Raw(x-bpp)/2) to average with _LBCarry
"psllq _ShiftBpp, %%mm6 \n\t" // shift the mm6 mask to cover bytes 6 & 7
"psllq _ShiftBpp, %%mm6 \n\t" // shift the mm6 mask to cover
// bytes 6 & 7
"movq %%mm0, %%mm2 \n\t" // mov updated Raws to mm2
"psllq _ShiftBpp, %%mm2 \n\t" // shift data to pos. correctly
"addl $8, %%ecx \n\t"
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte where both
// lsb's were == 1 (only valid for active group)
"movq %%mm3, %%mm1 \n\t" // now use mm1 for getting
// LBCarrys
"pand %%mm2, %%mm1 \n\t" // get LBCarrys for each byte
// where both
// lsb's were == 1 (only valid
// for active group)
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2) for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2 bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to Avg for each Active byte
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm2 \n\t" // add LBCarrys to (Raw(x-bpp)/2)
// for each byte
"pand %%mm6, %%mm2 \n\t" // leave only Active Group 2
// bytes to add to Avg
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) + LBCarrys to
// Avg for each Active byte
"cmpl _MMXLength, %%ecx \n\t"
// now ready to write back to memory
@ -3112,7 +3184,8 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
#ifdef __PIC__
"pushl %%ebx \n\t" // save Global Offset Table index
#endif
"movl _dif, %%ebx \n\t" // ebx: x = offset to alignment boundary
"movl _dif, %%ebx \n\t" // ebx: x = offset to alignment
// boundary
// preload "movl row, %%edi \n\t" // edi: Avg(x)
"cmpl _FullLength, %%ebx \n\t" // test if offset at end of array
"jnb avg_1end \n\t"
@ -3131,7 +3204,8 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
"addw %%cx, %%ax \n\t"
"incl %%ebx \n\t"
"shrw %%ax \n\t" // divide by 2
"addb -1(%%edi,%%ebx,), %%al \n\t" // add Avg(x); -1 to offset inc ebx
"addb -1(%%edi,%%ebx,), %%al \n\t" // add Avg(x); -1 to offset
// inc ebx
"cmpl _FullLength, %%ebx \n\t" // check if at end of array
"movb %%al, -1(%%edi,%%ebx,) \n\t" // write back Raw(x);
// mov does not affect flags; -1 to offset inc ebx
@ -3210,15 +3284,18 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
default: // bpp greater than 8 (!= 1,2,3,4,[5],6,[7],8)
{
#ifdef PNG_DEBUG
// GRR: PRINT ERROR HERE: SHOULD NEVER BE REACHED
png_warning(png_ptr,
"Internal logic error in pnggccrd (png_read_filter_row_mmx_avg())");
png_debug(1,
"Internal logic error in pnggccrd (png_read_filter_row_mmx_avg())\n");
#endif
#if 0
__asm__ __volatile__ (
"movq _LBCarryMask, %%mm5 \n\t"
// re-init address pointers and offset
"movl _dif, %%ebx \n\t" // ebx: x = offset to alignment boundary
"movl _dif, %%ebx \n\t" // ebx: x = offset to
// alignment boundary
"movl row, %%edi \n\t" // edi: Avg(x)
"movq _HBClearMask, %%mm4 \n\t"
"movl %%edi, %%edx \n\t"
@ -3231,15 +3308,20 @@ png_read_filter_row_mmx_avg(png_row_infop row_info, png_bytep row,
"pand %%mm1, %%mm3 \n\t" // get lsb for each prev_row byte
"movq (%%edx,%%ebx,), %%mm2 \n\t"
"psrlq $1, %%mm1 \n\t" // divide prev_row bytes by 2
"pand %%mm2, %%mm3 \n\t" // get LBCarrys for each byte where both
// lsb's were == 1
"pand %%mm2, %%mm3 \n\t" // get LBCarrys for each byte
// where both lsb's were == 1
"psrlq $1, %%mm2 \n\t" // divide raw bytes by 2
"pand %%mm4, %%mm1 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm3, %%mm0 \n\t" // add LBCarrys to Avg for each byte
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each byte
"paddb %%mm1, %%mm0 \n\t" // add (Prev_row/2) to Avg for each byte
"pand %%mm4, %%mm1 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm3, %%mm0 \n\t" // add LBCarrys to Avg for each
// byte
"pand %%mm4, %%mm2 \n\t" // clear invalid bit 7 of each
// byte
"paddb %%mm1, %%mm0 \n\t" // add (Prev_row/2) to Avg for
// each byte
"addl $8, %%ebx \n\t"
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) to Avg for each byte
"paddb %%mm2, %%mm0 \n\t" // add (Raw/2) to Avg for each
// byte
"cmpl _MMXLength, %%ebx \n\t"
"movq %%mm0, -8(%%edi,%%ebx,) \n\t"
"jb avg_Alp \n\t"
@ -3358,9 +3440,11 @@ png_read_filter_row_mmx_paeth(png_row_infop row_info, png_bytep row,
"movl %%edi, _dif \n\t" // take start of row
"addl %%ebx, _dif \n\t" // add bpp
"xorl %%ecx, %%ecx \n\t"
"addl $0xf, _dif \n\t" // add 7 + 8 to incr past alignment boundary
"addl $0xf, _dif \n\t" // add 7 + 8 to incr past alignment
// boundary
"andl $0xfffffff8, _dif \n\t" // mask to alignment boundary
"subl %%edi, _dif \n\t" // subtract from start ==> value ebx at alignment
"subl %%edi, _dif \n\t" // subtract from start ==> value ebx
// at alignment
"jz paeth_go \n\t"
// fix alignment
@ -3478,12 +3562,14 @@ png_read_filter_row_mmx_paeth(png_row_infop row_info, png_bytep row,
// prime the pump: load the first Raw(x-bpp) data set
"movq -8(%%edi,%%ecx,), %%mm1 \n\t"
"paeth_3lp: \n\t"
"psrlq _ShiftRem, %%mm1 \n\t" // shift last 3 bytes to 1st 3 bytes
"psrlq _ShiftRem, %%mm1 \n\t" // shift last 3 bytes to 1st
// 3 bytes
"movq (%%esi,%%ecx,), %%mm2 \n\t" // load b=Prior(x)
"punpcklbw %%mm0, %%mm1 \n\t" // unpack High bytes of a
"movq -8(%%esi,%%ecx,), %%mm3 \n\t" // prep c=Prior(x-bpp) bytes
"punpcklbw %%mm0, %%mm2 \n\t" // unpack High bytes of b
"psrlq _ShiftRem, %%mm3 \n\t" // shift last 3 bytes to 1st 3 bytes
"psrlq _ShiftRem, %%mm3 \n\t" // shift last 3 bytes to 1st
// 3 bytes
// pav = p - a = (a + b - c) - a = b - c
"movq %%mm2, %%mm4 \n\t"
"punpcklbw %%mm0, %%mm3 \n\t" // unpack High bytes of c
@ -3538,7 +3624,8 @@ png_read_filter_row_mmx_paeth(png_row_infop row_info, png_bytep row,
"paddb (%%edi,%%ecx,), %%mm7 \n\t" // add Paeth predictor with Raw(x)
"punpcklbw %%mm0, %%mm3 \n\t" // unpack High bytes of c
"movq %%mm7, (%%edi,%%ecx,) \n\t" // write back updated value
"movq %%mm7, %%mm1 \n\t" // now mm1 will be used as Raw(x-bpp)
"movq %%mm7, %%mm1 \n\t" // now mm1 will be used as
// Raw(x-bpp)
// now do Paeth for 2nd set of bytes (3-5)
"psrlq _ShiftBpp, %%mm2 \n\t" // load b=Prior(x) step 2
"punpcklbw %%mm0, %%mm1 \n\t" // unpack High bytes of a
@ -3595,7 +3682,8 @@ png_read_filter_row_mmx_paeth(png_row_infop row_info, png_bytep row,
"movq %%mm2, %%mm3 \n\t" // load c=Prior(x-bpp) step 1
"pand _ActiveMask, %%mm7 \n\t"
"punpckhbw %%mm0, %%mm2 \n\t" // unpack High bytes of b
"psllq _ShiftBpp, %%mm7 \n\t" // shift bytes to 2nd group of 3 bytes
"psllq _ShiftBpp, %%mm7 \n\t" // shift bytes to 2nd group of
// 3 bytes
// pav = p - a = (a + b - c) - a = b - c
"movq %%mm2, %%mm4 \n\t"
"paddb (%%edi,%%ecx,), %%mm7 \n\t" // add Paeth predictor with Raw(x)
@ -3655,7 +3743,8 @@ png_read_filter_row_mmx_paeth(png_row_infop row_info, png_bytep row,
// step ecx to next set of 8 bytes and repeat loop til done
"addl $8, %%ecx \n\t"
"pand _ActiveMaskEnd, %%mm1 \n\t"
"paddb -8(%%edi,%%ecx,), %%mm1 \n\t" // add Paeth predictor with Raw(x)
"paddb -8(%%edi,%%ecx,), %%mm1 \n\t" // add Paeth predictor with
// Raw(x)
"cmpl _MMXLength, %%ecx \n\t"
"pxor %%mm0, %%mm0 \n\t" // pxor does not affect flags

2
pngget.c
View File

@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngmem.c
View File

@ -1,7 +1,7 @@
/* pngmem.c - stub functions for memory allocation
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngpread.c
View File

@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

8
pngread.c
View File

@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -769,7 +769,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
* not called png_set_interlace_handling(), the display_row buffer will
* be ignored, so pass NULL to it.
*
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta5
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0rc1
*/
void PNGAPI
@ -818,7 +818,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
* only call this function once. If you desire to have an image for
* each pass of a interlaced image, use png_read_rows() instead.
*
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta5
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0rc1
*/
void PNGAPI
png_read_image(png_structp png_ptr, png_bytepp image)
@ -1133,7 +1133,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
png_info_destroy(png_ptr, end_info_ptr);
png_free(png_ptr, png_ptr->zbuf);
png_free(png_ptr, png_ptr->row_buf);
png_free(png_ptr, png_ptr->big_row_buf);
png_free(png_ptr, png_ptr->prev_row);
#if defined(PNG_READ_DITHER_SUPPORTED)
png_free(png_ptr, png_ptr->palette_lookup);

2
pngrio.c
View File

@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngrtran.c
View File

@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

5
pngrutil.c
View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -2975,7 +2975,8 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if (row_bytes > (png_uint_32)65536L)
png_error(png_ptr, "This image requires a row greater than 64KB");
#endif
png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, row_bytes);
png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes+64);
png_ptr->row_buf = png_ptr->big_row_buf+32;
#if defined(PNG_DEBUG) && defined(PNG_USE_PNGGCCRD)
png_ptr->row_buf_size = row_bytes;
#endif

2
pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

4
pngtest.c
View File

@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -1510,4 +1510,4 @@ main(int argc, char *argv[])
}
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_0beta5 your_png_h_is_not_version_1_2_0beta5;
typedef version_1_2_0rc1 your_png_h_is_not_version_1_2_0rc1;

2
pngtrans.c
View File

@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngvcrd.c
View File

@ -2,7 +2,7 @@
*
* For Intel x86 CPU and Microsoft Visual C++ compiler
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation

2
pngwio.c
View File

@ -1,7 +1,7 @@
/* pngwio.c - functions for data output
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngwrite.c
View File

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngwtran.c
View File

@ -1,7 +1,7 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngwutil.c
View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* libpng 1.2.0beta5 - August 8, 2001
* libpng 1.2.0rc1 - August 25, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
projects/msvc/README.txt
View File

@ -1,5 +1,5 @@
Microsoft Developer Studio Build File, Format Version 6.00 for
libpng 1.2.0beta5 (August 8, 2001) and zlib
libpng 1.2.0rc1 (August 25, 2001) and zlib
Copyright (C) 2000 Simon-Pierre Cadieux
For conditions of distribution and use, see copyright notice in png.h

2
projects/msvc/png32ms.def
View File

@ -6,7 +6,7 @@ LIBRARY
DESCRIPTION "PNG image compression library for Windows"
EXPORTS
;Version 1.2.0beta5
;Version 1.2.0rc1
png_build_grayscale_palette @1
png_check_sig @2
png_chunk_error @3

4
projects/netware.txt
View File

@ -1,6 +1,6 @@
A set of project files is available for Netware. Get
libpng-1.2.0beta5-project-netware.zip from a libpng distribution
libpng-1.2.0rc1-project-netware.zip from a libpng distribution
site such as http://libpng.sourceforge.net
Put the zip file in this directory (projects) and then run
"unzip -a libpng-1.2.0beta5-project-netware.zip"
"unzip -a libpng-1.2.0rc1-project-netware.zip"

4
projects/wince.txt
View File

@ -1,6 +1,6 @@
A set of project files is available for WinCE. Get
libpng-1.2.0beta5-project-wince.zip from a libpng distribution
libpng-1.2.0rc1-project-wince.zip from a libpng distribution
site such as http://libpng.sourceforge.net
Put the zip file in this directory (projects) and then run
"unzip -a libpng-1.2.0beta5-project-wince.zip"
"unzip -a libpng-1.2.0rc1-project-wince.zip"

2
scripts/makefile.aix
View File

@ -18,7 +18,7 @@ RM = rm -f
# read libpng.txt or png.h to see why PNGMAJ is 3. You should not
# have to change it.
PNGMAJ = 3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local

2
scripts/makefile.beos
View File

@ -13,7 +13,7 @@ ZLIBINC=/usr/local/include
# read libpng.txt or png.h to see why PNGMAJ is 3. You should not
# have to change it.
PNGMAJ = 3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
ALIGN=

2
scripts/makefile.cygwin
View File

@ -39,7 +39,7 @@ CFLAGS=-I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
# have to change it.
PNGMAJ = 3
#PNGDLL = $3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGMIN_BASE = 1.2.0
PNGVER = $(PNGMAJ).$(PNGMIN)

2
scripts/makefile.dec
View File

@ -17,7 +17,7 @@ ZLIBINC=../zlib
# read libpng.txt or png.h to see why PNGMAJ is 3. You should not
# have to change it.
PNGMAJ = 3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
CC=cc

2
scripts/makefile.gcmmx
View File

@ -55,7 +55,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 3. You should not
# have to change it.
PNGMAJ = 3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/makefile.hpgcc
View File

@ -34,7 +34,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 3. You should not
# have to change it.
PNGMAJ = 3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/makefile.hpux
View File

@ -19,7 +19,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 3. You should not
# have to change it.
PNGMAJ = 3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
# where make install puts libpng.a and png.h

2
scripts/makefile.linux
View File

@ -34,7 +34,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 3. You should not
# have to change it.
PNGMAJ = 3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/makefile.netbsd
View File

@ -11,7 +11,7 @@ INCSDIR=${LOCALBASE}/include
LIB=png
SHLIB_MAJOR= 3
SHLIB_MINOR= 1.2.0beta5
SHLIB_MINOR= 1.2.0rc1
SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.sco
View File

@ -25,7 +25,7 @@ RANLIB=echo
# read libpng.txt or png.h to see why PNGMAJ is 3. You should not
# have to change it.
PNGMAJ = 3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/makefile.sggcc
View File

@ -22,7 +22,7 @@ CFLAGS=$(ABI) -I$(ZLIBINC) -O2 $(WARNMORE) -fPIC -mabi=n32
LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=CC $(ABI) -shared
VER=1.2.0beta5
VER=1.2.0rc1
# See "man dso" for info about shared objects
SONUM=3
LIBS=libpng.so.$(SONUM).$(VER)

2
scripts/makefile.sgi
View File

@ -27,7 +27,7 @@ CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -DPNG_USE_PNGGCCRD -DPNG_NO_ASSEMBLER_
LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=cc $(ABI) -shared
VER=1.2.0beta5
VER=1.2.0rc1
# See "man dso" for info about shared objects
SONUM=3
SHAREDLIB=libpng.so

2
scripts/makefile.solaris
View File

@ -31,7 +31,7 @@ RANLIB=echo
# read libpng.txt or png.h to see why PNGMAJ is 3. You should not
# have to change it.
PNGMAJ = 3
PNGMIN = 1.2.0beta5
PNGMIN = 1.2.0rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/pngdef.pas
View File

@ -7,7 +7,7 @@ unit pngdef;
interface
const
PNG_LIBPNG_VER_STRING = '1.2.0beta5';
PNG_LIBPNG_VER_STRING = '1.2.0rc1';
PNG_LIBPNG_VER = 10200;
type

2
scripts/pngos2.def
View File

@ -2,7 +2,7 @@
; PNG.LIB module definition file for OS/2
;----------------------------------------
; Version 1.2.0beta5
; Version 1.2.0rc1
LIBRARY PNG
DESCRIPTION "PNG image compression library for OS/2"