The Independent JPEG Group's JPEG software v9b

Makefile.am

@@ -33,17 +33,17 @@ DOCS= README install.txt usage.txt wizard.txt example.c libjpeg.txt \
         structure.txt coderules.txt filelist.txt change.log
 
 # Makefiles for various systems
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 
 # Configuration files
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \

Makefile.in

@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# Makefile.in generated by automake 1.15 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+# Copyright (C) 1994-2014 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -23,7 +23,17 @@
 
 
 VPATH = @srcdir@
-am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
 am__make_running_with_option = \
   case $${target_option-} in \
       ?) ;; \
@@ -91,14 +101,12 @@ target_triplet = @target@
 bin_PROGRAMS = cjpeg$(EXEEXT) djpeg$(EXEEXT) jpegtran$(EXEEXT) \
 	rdjpgcom$(EXEEXT) wrjpgcom$(EXEEXT)
 subdir = .
-DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
-	$(top_srcdir)/configure $(am__configure_deps) \
-	$(srcdir)/jconfig.cfg depcomp $(include_HEADERS) \
-	$(noinst_HEADERS)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
+DIST_COMMON = $(srcdir)/Makefile.am $(top_srcdir)/configure \
+	$(am__configure_deps) $(include_HEADERS) $(noinst_HEADERS)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
  configure.lineno config.status.lineno
 mkinstalldirs = $(install_sh) -d
@@ -284,6 +292,7 @@ LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
 LTLIBOBJS = @LTLIBOBJS@
+LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@
 MAINT = @MAINT@
 MAKEINFO = @MAKEINFO@
 MANIFEST_TOOL = @MANIFEST_TOOL@
@@ -397,17 +406,17 @@ DOCS = README install.txt usage.txt wizard.txt example.c libjpeg.txt \
 
 
 # Makefiles for various systems
-MKFILES = configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES = configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 
 
 # Configuration files
@@ -491,7 +500,6 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__confi
 	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign Makefile'; \
 	$(am__cd) $(top_srcdir) && \
 	  $(AUTOMAKE) --foreign Makefile
-.PRECIOUS: Makefile
 Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	@case '$?' in \
 	  *config.status*) \
@@ -997,6 +1005,8 @@ uninstall-man: uninstall-man1
 	uninstall-libLTLIBRARIES uninstall-local uninstall-man \
 	uninstall-man1
 
+.PRECIOUS: Makefile
+
 
 # Install jconfig.h
 install-data-local:

README

@@ -1,7 +1,7 @@
 The Independent JPEG Group's JPEG software
 ==========================================
 
-README for release 9a of 19-Jan-2014
+README for release 9b of 17-Jan-2016
 ====================================
 
 This distribution contains the ninth public release of the Independent JPEG
@@ -60,7 +60,7 @@ OVERVIEW
 
 This package contains C software to implement JPEG image encoding, decoding,
 and transcoding.  JPEG (pronounced "jay-peg") is a standardized compression
-method for full-color and gray-scale images.
+method for full-color and grayscale images.
 
 This software implements JPEG baseline, extended-sequential, and progressive
 compression processes.  Provision is made for supporting all variants of these
@@ -115,7 +115,7 @@ with respect to this software, its quality, accuracy, merchantability, or
 fitness for a particular purpose.  This software is provided "AS IS", and you,
 its user, assume the entire risk as to its quality and accuracy.
 
-This software is copyright (C) 1991-2014, Thomas G. Lane, Guido Vollbeding.
+This software is copyright (C) 1991-2016, Thomas G. Lane, Guido Vollbeding.
 All Rights Reserved except as specified below.
 
 Permission is hereby granted to use, copy, modify, and distribute this
@@ -159,11 +159,6 @@ to produce "uncompressed GIFs".  This technique does not use the LZW
 algorithm; the resulting GIF files are larger than usual, but are readable
 by all standard GIF decoders.
 
-We are required to state that
-    "The Graphics Interchange Format(c) is the Copyright property of
-    CompuServe Incorporated.  GIF(sm) is a Service Mark property of
-    CompuServe Incorporated."
-
 
 REFERENCES
 ==========
@@ -176,8 +171,8 @@ The best short technical introduction to the JPEG compression algorithm is
 	Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44.
 (Adjacent articles in that issue discuss MPEG motion picture compression,
 applications of JPEG, and related topics.)  If you don't have the CACM issue
-handy, a PostScript file containing a revised version of Wallace's article is
+handy, a PDF file containing a revised version of Wallace's article is
-available at http://www.ijg.org/files/wallace.ps.gz.  The file (actually
+available at http://www.ijg.org/files/Wallace.JPEG.pdf.  The file (actually
 a preprint for an article that appeared in IEEE Trans. Consumer Electronics)
 omits the sample images that appeared in CACM, but it includes corrections
 and some added material.  Note: the Wallace article is copyright ACM and IEEE,
@@ -225,14 +220,13 @@ WG1 N 6080 with title "JPEG 9 Lossless Coding", June/July 2012, Paris,
 France.
 
 The JPEG standard does not specify all details of an interchangeable file
-format.  For the omitted details we follow the "JFIF" conventions, revision
+format.  For the omitted details we follow the "JFIF" conventions, version 2.
-1.02.  JFIF 1.02 has been adopted as an Ecma International Technical Report
+JFIF version 1 has been adopted as Recommendation ITU-T T.871 (05/2011) :
-and thus received a formal publication status.  It is available as a free
+Information technology - Digital compression and coding of continuous-tone
-download in PDF format from
+still images: JPEG File Interchange Format (JFIF).  It is available as a
-http://www.ecma-international.org/publications/techreports/E-TR-098.htm.
+free download in PDF file format from http://www.itu.int/rec/T-REC-T.871.
-A PostScript version of the JFIF document is available at
+A PDF file of the older JFIF document is available at
-http://www.ijg.org/files/jfif.ps.gz.  There is also a plain text version at
+http://www.w3.org/Graphics/JPEG/jfif3.pdf.
-http://www.ijg.org/files/jfif.txt.gz, but it is missing the figures.
 
 The TIFF 6.0 file format specification can be obtained by FTP from
 ftp://ftp.sgi.com/graphics/tiff/TIFF6.ps.gz.  The JPEG incorporation scheme
@@ -252,8 +246,8 @@ ARCHIVE LOCATIONS
 The "official" archive site for this software is www.ijg.org.
 The most recent released version can always be found there in
 directory "files".  This particular version will be archived as
-http://www.ijg.org/files/jpegsrc.v9a.tar.gz, and in Windows-compatible
+http://www.ijg.org/files/jpegsrc.v9b.tar.gz, and in Windows-compatible
-"zip" archive format as http://www.ijg.org/files/jpegsr9a.zip.
+"zip" archive format as http://www.ijg.org/files/jpegsr9b.zip.
 
 The JPEG FAQ (Frequently Asked Questions) article is a source of some
 general information about JPEG.

ar-lib

@@ -4,7 +4,7 @@
 me=ar-lib
 scriptversion=2012-03-01.08; # UTC
 
-# Copyright (C) 2010-2013 Free Software Foundation, Inc.
+# Copyright (C) 2010-2014 Free Software Foundation, Inc.
 # Written by Peter Rosin <peda@lysator.liu.se>.
 #
 # This program is free software; you can redistribute it and/or modify

change.log

@@ -1,6 +1,29 @@
 CHANGE LOG for Independent JPEG Group's JPEG software
 
 
+Version 9b  17-Jan-2016
+-----------------------
+
+Improvements and optimizations in DCT and color calculations.
+Normalize range limit array composition and access pattern.
+Thank to Sia Furler and Maddie Ziegler for inspiration.
+
+Use merged upsample with scaled DCT sizes larger than 8.
+Thank to Taylor Hatala for inspiration.
+
+Check for excessive comment lengths in argument parsing in wrjpgcom.c.
+Thank to Julian Cohen for hint.
+
+Add makefile.b32 for use with Borland C++ 32-bit (bcc32).
+Thank to Joe Slater for contribution.
+
+Document 'f' specifier for jpegtran -crop specification.
+Thank to Michele Martone for suggestion.
+
+Use defined value from header instead of hardwired number in rdswitch.c.
+Thank to Robert Sprowson for hint.
+
+
 Version 9a  19-Jan-2014
 -----------------------
 

cjpeg.1

@@ -1,4 +1,4 @@
-.TH CJPEG 1 "23 November 2013"
+.TH CJPEG 1 "26 July 2015"
 .SH NAME
 cjpeg \- compress an image file to a JPEG file
 .SH SYNOPSIS
@@ -16,7 +16,7 @@ cjpeg \- compress an image file to a JPEG file
 compresses the named image file, or the standard input if no file is
 named, and produces a JPEG/JFIF file on the standard output.
 The currently supported input file formats are: PPM (PBMPLUS color
-format), PGM (PBMPLUS gray-scale format), BMP, Targa, and RLE (Utah Raster
+format), PGM (PBMPLUS grayscale format), BMP, Targa, and RLE (Utah Raster
 Toolkit format).  (RLE is supported only if the URT library is available.)
 .SH OPTIONS
 All switch names may be abbreviated; for example,

compile

@@ -3,7 +3,7 @@
 
 scriptversion=2012-10-14.11; # UTC
 
-# Copyright (C) 1999-2013 Free Software Foundation, Inc.
+# Copyright (C) 1999-2014 Free Software Foundation, Inc.
 # Written by Tom Tromey <tromey@cygnus.com>.
 #
 # This program is free software; you can redistribute it and/or modify

config.guess

@@ -1,8 +1,8 @@
 #! /bin/sh
 # Attempt to guess a canonical system name.
-#   Copyright 1992-2013 Free Software Foundation, Inc.
+#   Copyright 1992-2014 Free Software Foundation, Inc.
 
-timestamp='2013-11-29'
+timestamp='2014-11-04'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -24,12 +24,12 @@ timestamp='2013-11-29'
 # program.  This Exception is an additional permission under section 7
 # of the GNU General Public License, version 3 ("GPLv3").
 #
-# Originally written by Per Bothner.
+# Originally written by Per Bothner; maintained since 2000 by Ben Elliston.
 #
 # You can get the latest version of this script from:
 # http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
 #
-# Please send patches with a ChangeLog entry to config-patches@gnu.org.
+# Please send patches to <config-patches@gnu.org>.
 
 
 me=`echo "$0" | sed -e 's,.*/,,'`
@@ -50,7 +50,7 @@ version="\
 GNU config.guess ($timestamp)
 
 Originally written by Per Bothner.
-Copyright 1992-2013 Free Software Foundation, Inc.
+Copyright 1992-2014 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -149,7 +149,7 @@ Linux|GNU|GNU/*)
 	LIBC=gnu
 	#endif
 	EOF
-	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'`
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`
 	;;
 esac
 
@@ -579,8 +579,9 @@ EOF
 	else
 		IBM_ARCH=powerpc
 	fi
-	if [ -x /usr/bin/oslevel ] ; then
+	if [ -x /usr/bin/lslpp ] ; then
-		IBM_REV=`/usr/bin/oslevel`
+		IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc |
+			   awk -F: '{ print $3 }' | sed s/[0-9]*$/0/`
 	else
 		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
 	fi
@@ -826,7 +827,7 @@ EOF
     *:MINGW*:*)
 	echo ${UNAME_MACHINE}-pc-mingw32
 	exit ;;
-    i*:MSYS*:*)
+    *:MSYS*:*)
 	echo ${UNAME_MACHINE}-pc-msys
 	exit ;;
     i*:windows32*:*)
@@ -969,10 +970,10 @@ EOF
 	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
 	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; }
 	;;
-    or1k:Linux:*:*)
+    openrisc*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	echo or1k-unknown-linux-${LIBC}
 	exit ;;
-    or32:Linux:*:*)
+    or32:Linux:*:* | or1k*:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     padre:Linux:*:*)
@@ -1371,154 +1372,6 @@ EOF
 	exit ;;
 esac
 
-eval $set_cc_for_build
-cat >$dummy.c <<EOF
-#ifdef _SEQUENT_
-# include <sys/types.h>
-# include <sys/utsname.h>
-#endif
-main ()
-{
-#if defined (sony)
-#if defined (MIPSEB)
-  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
-     I don't know....  */
-  printf ("mips-sony-bsd\n"); exit (0);
-#else
-#include <sys/param.h>
-  printf ("m68k-sony-newsos%s\n",
-#ifdef NEWSOS4
-	"4"
-#else
-	""
-#endif
-	); exit (0);
-#endif
-#endif
-
-#if defined (__arm) && defined (__acorn) && defined (__unix)
-  printf ("arm-acorn-riscix\n"); exit (0);
-#endif
-
-#if defined (hp300) && !defined (hpux)
-  printf ("m68k-hp-bsd\n"); exit (0);
-#endif
-
-#if defined (NeXT)
-#if !defined (__ARCHITECTURE__)
-#define __ARCHITECTURE__ "m68k"
-#endif
-  int version;
-  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
-  if (version < 4)
-    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
-  else
-    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
-  exit (0);
-#endif
-
-#if defined (MULTIMAX) || defined (n16)
-#if defined (UMAXV)
-  printf ("ns32k-encore-sysv\n"); exit (0);
-#else
-#if defined (CMU)
-  printf ("ns32k-encore-mach\n"); exit (0);
-#else
-  printf ("ns32k-encore-bsd\n"); exit (0);
-#endif
-#endif
-#endif
-
-#if defined (__386BSD__)
-  printf ("i386-pc-bsd\n"); exit (0);
-#endif
-
-#if defined (sequent)
-#if defined (i386)
-  printf ("i386-sequent-dynix\n"); exit (0);
-#endif
-#if defined (ns32000)
-  printf ("ns32k-sequent-dynix\n"); exit (0);
-#endif
-#endif
-
-#if defined (_SEQUENT_)
-    struct utsname un;
-
-    uname(&un);
-
-    if (strncmp(un.version, "V2", 2) == 0) {
-	printf ("i386-sequent-ptx2\n"); exit (0);
-    }
-    if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
-	printf ("i386-sequent-ptx1\n"); exit (0);
-    }
-    printf ("i386-sequent-ptx\n"); exit (0);
-
-#endif
-
-#if defined (vax)
-# if !defined (ultrix)
-#  include <sys/param.h>
-#  if defined (BSD)
-#   if BSD == 43
-      printf ("vax-dec-bsd4.3\n"); exit (0);
-#   else
-#    if BSD == 199006
-      printf ("vax-dec-bsd4.3reno\n"); exit (0);
-#    else
-      printf ("vax-dec-bsd\n"); exit (0);
-#    endif
-#   endif
-#  else
-    printf ("vax-dec-bsd\n"); exit (0);
-#  endif
-# else
-    printf ("vax-dec-ultrix\n"); exit (0);
-# endif
-#endif
-
-#if defined (alliant) && defined (i860)
-  printf ("i860-alliant-bsd\n"); exit (0);
-#endif
-
-  exit (1);
-}
-EOF
-
-$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` &&
-	{ echo "$SYSTEM_NAME"; exit; }
-
-# Apollos put the system type in the environment.
-
-test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; }
-
-# Convex versions that predate uname can use getsysinfo(1)
-
-if [ -x /usr/convex/getsysinfo ]
-then
-    case `getsysinfo -f cpu_type` in
-    c1*)
-	echo c1-convex-bsd
-	exit ;;
-    c2*)
-	if getsysinfo -f scalar_acc
-	then echo c32-convex-bsd
-	else echo c2-convex-bsd
-	fi
-	exit ;;
-    c34*)
-	echo c34-convex-bsd
-	exit ;;
-    c38*)
-	echo c38-convex-bsd
-	exit ;;
-    c4*)
-	echo c4-convex-bsd
-	exit ;;
-    esac
-fi
-
 cat >&2 <<EOF
 $0: unable to guess system type
 

config.sub

@@ -1,8 +1,8 @@
 #! /bin/sh
 # Configuration validation subroutine script.
-#   Copyright 1992-2013 Free Software Foundation, Inc.
+#   Copyright 1992-2014 Free Software Foundation, Inc.
 
-timestamp='2013-10-01'
+timestamp='2014-12-03'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -25,7 +25,7 @@ timestamp='2013-10-01'
 # of the GNU General Public License, version 3 ("GPLv3").
 
 
-# Please send patches with a ChangeLog entry to config-patches@gnu.org.
+# Please send patches to <config-patches@gnu.org>.
 #
 # Configuration subroutine to validate and canonicalize a configuration type.
 # Supply the specified configuration type as an argument.
@@ -68,7 +68,7 @@ Report bugs and patches to <config-patches@gnu.org>."
 version="\
 GNU config.sub ($timestamp)
 
-Copyright 1992-2013 Free Software Foundation, Inc.
+Copyright 1992-2014 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -283,8 +283,10 @@ case $basic_machine in
 	| mips64vr5900 | mips64vr5900el \
 	| mipsisa32 | mipsisa32el \
 	| mipsisa32r2 | mipsisa32r2el \
+	| mipsisa32r6 | mipsisa32r6el \
 	| mipsisa64 | mipsisa64el \
 	| mipsisa64r2 | mipsisa64r2el \
+	| mipsisa64r6 | mipsisa64r6el \
 	| mipsisa64sb1 | mipsisa64sb1el \
 	| mipsisa64sr71k | mipsisa64sr71kel \
 	| mipsr5900 | mipsr5900el \
@@ -296,11 +298,11 @@ case $basic_machine in
 	| nds32 | nds32le | nds32be \
 	| nios | nios2 | nios2eb | nios2el \
 	| ns16k | ns32k \
-	| open8 \
+	| open8 | or1k | or1knd | or32 \
-	| or1k | or32 \
 	| pdp10 | pdp11 | pj | pjl \
 	| powerpc | powerpc64 | powerpc64le | powerpcle \
 	| pyramid \
+	| riscv32 | riscv64 \
 	| rl78 | rx \
 	| score \
 	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
@@ -311,6 +313,7 @@ case $basic_machine in
 	| tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
 	| ubicom32 \
 	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
+	| visium \
 	| we32k \
 	| x86 | xc16x | xstormy16 | xtensa \
 	| z8k | z80)
@@ -325,6 +328,9 @@ case $basic_machine in
 	c6x)
 		basic_machine=tic6x-unknown
 		;;
+	leon|leon[3-9])
+		basic_machine=sparc-$basic_machine
+		;;
 	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip)
 		basic_machine=$basic_machine-unknown
 		os=-none
@@ -402,8 +408,10 @@ case $basic_machine in
 	| mips64vr5900-* | mips64vr5900el-* \
 	| mipsisa32-* | mipsisa32el-* \
 	| mipsisa32r2-* | mipsisa32r2el-* \
+	| mipsisa32r6-* | mipsisa32r6el-* \
 	| mipsisa64-* | mipsisa64el-* \
 	| mipsisa64r2-* | mipsisa64r2el-* \
+	| mipsisa64r6-* | mipsisa64r6el-* \
 	| mipsisa64sb1-* | mipsisa64sb1el-* \
 	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
 	| mipsr5900-* | mipsr5900el-* \
@@ -415,6 +423,7 @@ case $basic_machine in
 	| nios-* | nios2-* | nios2eb-* | nios2el-* \
 	| none-* | np1-* | ns16k-* | ns32k-* \
 	| open8-* \
+	| or1k*-* \
 	| orion-* \
 	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
 	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
@@ -432,6 +441,7 @@ case $basic_machine in
 	| ubicom32-* \
 	| v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \
 	| vax-* \
+	| visium-* \
 	| we32k-* \
 	| x86-* | x86_64-* | xc16x-* | xps100-* \
 	| xstormy16-* | xtensa*-* \
@@ -769,6 +779,9 @@ case $basic_machine in
 		basic_machine=m68k-isi
 		os=-sysv
 		;;
+	leon-*|leon[3-9]-*)
+		basic_machine=sparc-`echo $basic_machine | sed 's/-.*//'`
+		;;
 	m68knommu)
 		basic_machine=m68k-unknown
 		os=-linux
@@ -824,6 +837,10 @@ case $basic_machine in
 		basic_machine=powerpc-unknown
 		os=-morphos
 		;;
+	moxiebox)
+		basic_machine=moxie-unknown
+		os=-moxiebox
+		;;
 	msdos)
 		basic_machine=i386-pc
 		os=-msdos
@@ -1369,14 +1386,14 @@ case $os in
 	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
 	      | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
 	      | -linux-newlib* | -linux-musl* | -linux-uclibc* \
-	      | -uxpv* | -beos* | -mpeix* | -udk* \
+	      | -uxpv* | -beos* | -mpeix* | -udk* | -moxiebox* \
 	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
 	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
 	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
 	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
 	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
 	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
-	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es*)
+	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* | -tirtos*)
 	# Remember, each alternative MUST END IN *, to match a version number.
 		;;
 	-qnx*)
@@ -1594,9 +1611,6 @@ case $basic_machine in
 	mips*-*)
 		os=-elf
 		;;
-	or1k-*)
-		os=-elf
-		;;
 	or32-*)
 		os=-coff
 		;;

configure.ac

@@ -5,7 +5,7 @@
 # Configure script for IJG libjpeg
 #
 
-AC_INIT([libjpeg], [9.1.0])
+AC_INIT([libjpeg], [9.2.0])
 
 # Directory where autotools helper scripts lives.
 AC_CONFIG_AUX_DIR([.])

depcomp

@@ -3,7 +3,7 @@
 
 scriptversion=2013-05-30.07; # UTC
 
-# Copyright (C) 1999-2013 Free Software Foundation, Inc.
+# Copyright (C) 1999-2014 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

djpeg.1

@@ -1,4 +1,4 @@
-.TH DJPEG 1 "23 November 2013"
+.TH DJPEG 1 "26 July 2015"
 .SH NAME
 djpeg \- decompress a JPEG file to an image file
 .SH SYNOPSIS
@@ -55,11 +55,16 @@ default options are chosen for highest quality output.)  Currently, this is
 equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR.
 .TP
 .B \-grayscale
-Force gray-scale output even if JPEG file is color.  Useful for viewing on
+Force grayscale output even if JPEG file is color.
-monochrome displays; also,
+Useful for viewing on monochrome displays; also,
 .B djpeg
 runs noticeably faster in this mode.
 .TP
+.B \-rgb
+Force RGB output even if JPEG file is grayscale.
+This is provided to support applications that don't
+want to cope with grayscale as a separate case.
+.TP
 .BI \-scale " M/N"
 Scale the output image by a factor M/N.  Currently supported scale factors are
 M/N with all M from 1 to 16, where N is the source DCT size, which is 8 for
@@ -76,7 +81,7 @@ emitted if
 .B \-colors
 or
 .B \-grayscale
-is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color
+is specified, or if the JPEG file is grayscale; otherwise, 24-bit full-color
 format is emitted.
 .TP
 .B \-gif
@@ -90,12 +95,12 @@ emitted if
 .B \-colors
 or
 .B \-grayscale
-is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color
+is specified, or if the JPEG file is grayscale; otherwise, 24-bit full-color
 format is emitted.
 .TP
 .B \-pnm
 Select PBMPLUS (PPM/PGM) output format (this is the default format).
-PGM is emitted if the JPEG file is gray-scale or if
+PGM is emitted if the JPEG file is grayscale or if
 .B \-grayscale
 is specified; otherwise PPM is emitted.
 .TP
@@ -103,8 +108,8 @@ is specified; otherwise PPM is emitted.
 Select RLE output format.  (Requires URT library.)
 .TP
 .B \-targa
-Select Targa output format.  Gray-scale format is emitted if the JPEG file is
+Select Targa output format.  Grayscale format is emitted if the JPEG file is
-gray-scale or if
+grayscale or if
 .B \-grayscale
 is specified; otherwise, colormapped format is emitted if
 .B \-colors
@@ -162,7 +167,7 @@ faster and needs less memory, but it produces a lower-quality image.
 is ignored unless you also say
 .B \-colors
 .IR N .
-Also, the one-pass method is always used for gray-scale output (the two-pass
+Also, the one-pass method is always used for grayscale output (the two-pass
 method is no improvement then).
 .TP
 .BI \-maxmemory " N"

djpeg.c

@@ -2,7 +2,7 @@
  * djpeg.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2009-2013 by Guido Vollbeding.
+ * Modified 2009-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -102,6 +102,7 @@ usage (void)
   fprintf(stderr, "  -colors N      Reduce image to no more than N colors\n");
   fprintf(stderr, "  -fast          Fast, low-quality processing\n");
   fprintf(stderr, "  -grayscale     Force grayscale output\n");
+  fprintf(stderr, "  -rgb           Force RGB output\n");
 #ifdef IDCT_SCALING_SUPPORTED
   fprintf(stderr, "  -scale M/N     Scale output image by fraction M/N, eg, 1/8\n");
 #endif
@@ -264,6 +265,10 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
       /* Force monochrome output. */
       cinfo->out_color_space = JCS_GRAYSCALE;
 
+    } else if (keymatch(arg, "rgb", 3)) {
+      /* Force RGB output. */
+      cinfo->out_color_space = JCS_RGB;
+
     } else if (keymatch(arg, "map", 3)) {
       /* Quantize to a color map taken from an input file. */
       if (++argn >= argc)	/* advance to next argument */

install-sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-scriptversion=2011-11-20.07; # UTC
+scriptversion=2013-12-25.23; # UTC
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -41,19 +41,15 @@ scriptversion=2011-11-20.07; # UTC
 # This script is compatible with the BSD install script, but was written
 # from scratch.
 
+tab='	'
 nl='
 '
-IFS=" ""	$nl"
+IFS=" $tab$nl"
 
-# set DOITPROG to echo to test this script
+# Set DOITPROG to "echo" to test this script.
 
-# Don't use :- since 4.3BSD and earlier shells don't like it.
 doit=${DOITPROG-}
-if test -z "$doit"; then
+doit_exec=${doit:-exec}
-  doit_exec=exec
-else
-  doit_exec=$doit
-fi
 
 # Put in absolute file names if you don't have them in your path;
 # or use environment vars.
@@ -68,17 +64,6 @@ mvprog=${MVPROG-mv}
 rmprog=${RMPROG-rm}
 stripprog=${STRIPPROG-strip}
 
-posix_glob='?'
-initialize_posix_glob='
-  test "$posix_glob" != "?" || {
-    if (set -f) 2>/dev/null; then
-      posix_glob=
-    else
-      posix_glob=:
-    fi
-  }
-'
-
 posix_mkdir=
 
 # Desired mode of installed file.
@@ -97,7 +82,7 @@ dir_arg=
 dst_arg=
 
 copy_on_change=false
-no_target_directory=
+is_target_a_directory=possibly
 
 usage="\
 Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
@@ -137,46 +122,57 @@ while test $# -ne 0; do
     -d) dir_arg=true;;
 
     -g) chgrpcmd="$chgrpprog $2"
-	shift;;
+        shift;;
 
     --help) echo "$usage"; exit $?;;
 
     -m) mode=$2
-	case $mode in
+        case $mode in
-	  *' '* | *'	'* | *'
+          *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
-'*	  | *'*'* | *'?'* | *'['*)
+            echo "$0: invalid mode: $mode" >&2
-	    echo "$0: invalid mode: $mode" >&2
+            exit 1;;
-	    exit 1;;
+        esac
-	esac
+        shift;;
-	shift;;
 
     -o) chowncmd="$chownprog $2"
-	shift;;
+        shift;;
 
     -s) stripcmd=$stripprog;;
 
-    -t) dst_arg=$2
+    -t)
-	# Protect names problematic for 'test' and other utilities.
+        is_target_a_directory=always
-	case $dst_arg in
+        dst_arg=$2
-	  -* | [=\(\)!]) dst_arg=./$dst_arg;;
+        # Protect names problematic for 'test' and other utilities.
-	esac
+        case $dst_arg in
-	shift;;
+          -* | [=\(\)!]) dst_arg=./$dst_arg;;
+        esac
+        shift;;
 
-    -T) no_target_directory=true;;
+    -T) is_target_a_directory=never;;
 
     --version) echo "$0 $scriptversion"; exit $?;;
 
-    --)	shift
+    --) shift
-	break;;
+        break;;
 
-    -*)	echo "$0: invalid option: $1" >&2
+    -*) echo "$0: invalid option: $1" >&2
-	exit 1;;
+        exit 1;;
 
     *)  break;;
   esac
   shift
 done
 
+# We allow the use of options -d and -T together, by making -d
+# take the precedence; this is for compatibility with GNU install.
+
+if test -n "$dir_arg"; then
+  if test -n "$dst_arg"; then
+    echo "$0: target directory not allowed when installing a directory." >&2
+    exit 1
+  fi
+fi
+
 if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
   # When -d is used, all remaining arguments are directories to create.
   # When -t is used, the destination is already specified.
@@ -207,6 +203,15 @@ if test $# -eq 0; then
   exit 0
 fi
 
+if test -z "$dir_arg"; then
+  if test $# -gt 1 || test "$is_target_a_directory" = always; then
+    if test ! -d "$dst_arg"; then
+      echo "$0: $dst_arg: Is not a directory." >&2
+      exit 1
+    fi
+  fi
+fi
+
 if test -z "$dir_arg"; then
   do_exit='(exit $ret); exit $ret'
   trap "ret=129; $do_exit" 1
@@ -223,16 +228,16 @@ if test -z "$dir_arg"; then
 
     *[0-7])
       if test -z "$stripcmd"; then
-	u_plus_rw=
+        u_plus_rw=
       else
-	u_plus_rw='% 200'
+        u_plus_rw='% 200'
       fi
       cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
     *)
       if test -z "$stripcmd"; then
-	u_plus_rw=
+        u_plus_rw=
       else
-	u_plus_rw=,u+rw
+        u_plus_rw=,u+rw
       fi
       cp_umask=$mode$u_plus_rw;;
   esac
@@ -269,41 +274,15 @@ do
     # If destination is a directory, append the input filename; won't work
     # if double slashes aren't ignored.
     if test -d "$dst"; then
-      if test -n "$no_target_directory"; then
+      if test "$is_target_a_directory" = never; then
-	echo "$0: $dst_arg: Is a directory" >&2
+        echo "$0: $dst_arg: Is a directory" >&2
-	exit 1
+        exit 1
       fi
       dstdir=$dst
       dst=$dstdir/`basename "$src"`
       dstdir_status=0
     else
-      # Prefer dirname, but fall back on a substitute if dirname fails.
+      dstdir=`dirname "$dst"`
-      dstdir=`
-	(dirname "$dst") 2>/dev/null ||
-	expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	     X"$dst" : 'X\(//\)[^/]' \| \
-	     X"$dst" : 'X\(//\)$' \| \
-	     X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
-	echo X"$dst" |
-	    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
-		   s//\1/
-		   q
-		 }
-		 /^X\(\/\/\)[^/].*/{
-		   s//\1/
-		   q
-		 }
-		 /^X\(\/\/\)$/{
-		   s//\1/
-		   q
-		 }
-		 /^X\(\/\).*/{
-		   s//\1/
-		   q
-		 }
-		 s/.*/./; q'
-      `
-
       test -d "$dstdir"
       dstdir_status=$?
     fi
@@ -314,74 +293,74 @@ do
   if test $dstdir_status != 0; then
     case $posix_mkdir in
       '')
-	# Create intermediate dirs using mode 755 as modified by the umask.
+        # Create intermediate dirs using mode 755 as modified by the umask.
-	# This is like FreeBSD 'install' as of 1997-10-28.
+        # This is like FreeBSD 'install' as of 1997-10-28.
-	umask=`umask`
+        umask=`umask`
-	case $stripcmd.$umask in
+        case $stripcmd.$umask in
-	  # Optimize common cases.
+          # Optimize common cases.
-	  *[2367][2367]) mkdir_umask=$umask;;
+          *[2367][2367]) mkdir_umask=$umask;;
-	  .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
+          .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
 
-	  *[0-7])
+          *[0-7])
-	    mkdir_umask=`expr $umask + 22 \
+            mkdir_umask=`expr $umask + 22 \
-	      - $umask % 100 % 40 + $umask % 20 \
+              - $umask % 100 % 40 + $umask % 20 \
-	      - $umask % 10 % 4 + $umask % 2
+              - $umask % 10 % 4 + $umask % 2
-	    `;;
+            `;;
-	  *) mkdir_umask=$umask,go-w;;
+          *) mkdir_umask=$umask,go-w;;
-	esac
+        esac
 
-	# With -d, create the new directory with the user-specified mode.
+        # With -d, create the new directory with the user-specified mode.
-	# Otherwise, rely on $mkdir_umask.
+        # Otherwise, rely on $mkdir_umask.
-	if test -n "$dir_arg"; then
+        if test -n "$dir_arg"; then
-	  mkdir_mode=-m$mode
+          mkdir_mode=-m$mode
-	else
+        else
-	  mkdir_mode=
+          mkdir_mode=
-	fi
+        fi
 
-	posix_mkdir=false
+        posix_mkdir=false
-	case $umask in
+        case $umask in
-	  *[123567][0-7][0-7])
+          *[123567][0-7][0-7])
-	    # POSIX mkdir -p sets u+wx bits regardless of umask, which
+            # POSIX mkdir -p sets u+wx bits regardless of umask, which
-	    # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
+            # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
-	    ;;
+            ;;
-	  *)
+          *)
-	    tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+            tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
-	    trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
+            trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
 
-	    if (umask $mkdir_umask &&
+            if (umask $mkdir_umask &&
-		exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
+                exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
-	    then
+            then
-	      if test -z "$dir_arg" || {
+              if test -z "$dir_arg" || {
-		   # Check for POSIX incompatibilities with -m.
+                   # Check for POSIX incompatibilities with -m.
-		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+                   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
-		   # other-writable bit of parent directory when it shouldn't.
+                   # other-writable bit of parent directory when it shouldn't.
-		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+                   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
-		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
+                   ls_ld_tmpdir=`ls -ld "$tmpdir"`
-		   case $ls_ld_tmpdir in
+                   case $ls_ld_tmpdir in
-		     d????-?r-*) different_mode=700;;
+                     d????-?r-*) different_mode=700;;
-		     d????-?--*) different_mode=755;;
+                     d????-?--*) different_mode=755;;
-		     *) false;;
+                     *) false;;
-		   esac &&
+                   esac &&
-		   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
+                   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
-		     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
+                     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
-		     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+                     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
-		   }
+                   }
-		 }
+                 }
-	      then posix_mkdir=:
+              then posix_mkdir=:
-	      fi
+              fi
-	      rmdir "$tmpdir/d" "$tmpdir"
+              rmdir "$tmpdir/d" "$tmpdir"
-	    else
+            else
-	      # Remove any dirs left behind by ancient mkdir implementations.
+              # Remove any dirs left behind by ancient mkdir implementations.
-	      rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
+              rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
-	    fi
+            fi
-	    trap '' 0;;
+            trap '' 0;;
-	esac;;
+        esac;;
     esac
 
     if
       $posix_mkdir && (
-	umask $mkdir_umask &&
+        umask $mkdir_umask &&
-	$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+        $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
       )
     then :
     else
@@ -391,53 +370,51 @@ do
       # directory the slow way, step by step, checking for races as we go.
 
       case $dstdir in
-	/*) prefix='/';;
+        /*) prefix='/';;
-	[-=\(\)!]*) prefix='./';;
+        [-=\(\)!]*) prefix='./';;
-	*)  prefix='';;
+        *)  prefix='';;
       esac
 
-      eval "$initialize_posix_glob"
-
       oIFS=$IFS
       IFS=/
-      $posix_glob set -f
+      set -f
       set fnord $dstdir
       shift
-      $posix_glob set +f
+      set +f
       IFS=$oIFS
 
       prefixes=
 
       for d
       do
-	test X"$d" = X && continue
+        test X"$d" = X && continue
 
-	prefix=$prefix$d
+        prefix=$prefix$d
-	if test -d "$prefix"; then
+        if test -d "$prefix"; then
-	  prefixes=
+          prefixes=
-	else
+        else
-	  if $posix_mkdir; then
+          if $posix_mkdir; then
-	    (umask=$mkdir_umask &&
+            (umask=$mkdir_umask &&
-	     $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+             $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
-	    # Don't fail if two instances are running concurrently.
+            # Don't fail if two instances are running concurrently.
-	    test -d "$prefix" || exit 1
+            test -d "$prefix" || exit 1
-	  else
+          else
-	    case $prefix in
+            case $prefix in
-	      *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+              *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
-	      *) qprefix=$prefix;;
+              *) qprefix=$prefix;;
-	    esac
+            esac
-	    prefixes="$prefixes '$qprefix'"
+            prefixes="$prefixes '$qprefix'"
-	  fi
+          fi
-	fi
+        fi
-	prefix=$prefix/
+        prefix=$prefix/
       done
 
       if test -n "$prefixes"; then
-	# Don't fail if two instances are running concurrently.
+        # Don't fail if two instances are running concurrently.
-	(umask $mkdir_umask &&
+        (umask $mkdir_umask &&
-	 eval "\$doit_exec \$mkdirprog $prefixes") ||
+         eval "\$doit_exec \$mkdirprog $prefixes") ||
-	  test -d "$dstdir" || exit 1
+          test -d "$dstdir" || exit 1
-	obsolete_mkdir_used=true
+        obsolete_mkdir_used=true
       fi
     fi
   fi
@@ -472,15 +449,12 @@ do
 
     # If -C, don't bother to copy if it wouldn't change the file.
     if $copy_on_change &&
-       old=`LC_ALL=C ls -dlL "$dst"	2>/dev/null` &&
+       old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
-       new=`LC_ALL=C ls -dlL "$dsttmp"	2>/dev/null` &&
+       new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
-
+       set -f &&
-       eval "$initialize_posix_glob" &&
-       $posix_glob set -f &&
        set X $old && old=:$2:$4:$5:$6 &&
        set X $new && new=:$2:$4:$5:$6 &&
-       $posix_glob set +f &&
+       set +f &&
-
        test "$old" = "$new" &&
        $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
     then
@@ -493,24 +467,24 @@ do
       # to itself, or perhaps because mv is so ancient that it does not
       # support -f.
       {
-	# Now remove or move aside any old file at destination location.
+        # Now remove or move aside any old file at destination location.
-	# We try this two ways since rm can't unlink itself on some
+        # We try this two ways since rm can't unlink itself on some
-	# systems and the destination file might be busy for other
+        # systems and the destination file might be busy for other
-	# reasons.  In this case, the final cleanup might fail but the new
+        # reasons.  In this case, the final cleanup might fail but the new
-	# file should still install successfully.
+        # file should still install successfully.
-	{
+        {
-	  test ! -f "$dst" ||
+          test ! -f "$dst" ||
-	  $doit $rmcmd -f "$dst" 2>/dev/null ||
+          $doit $rmcmd -f "$dst" 2>/dev/null ||
-	  { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+          { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
-	    { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
+            { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
-	  } ||
+          } ||
-	  { echo "$0: cannot unlink or rename $dst" >&2
+          { echo "$0: cannot unlink or rename $dst" >&2
-	    (exit 1); exit 1
+            (exit 1); exit 1
-	  }
+          }
-	} &&
+        } &&
 
-	# Now rename the file to the real destination.
+        # Now rename the file to the real destination.
-	$doit $mvcmd "$dsttmp" "$dst"
+        $doit $mvcmd "$dsttmp" "$dst"
       }
     fi || exit 1
 

install.txt

@@ -1,6 +1,6 @@
 INSTALLATION INSTRUCTIONS for the Independent JPEG Group's JPEG software
 
-Copyright (C) 1991-2013, Thomas G. Lane, Guido Vollbeding.
+Copyright (C) 1991-2015, Thomas G. Lane, Guido Vollbeding.
 This file is part of the Independent JPEG Group's software.
 For conditions of distribution and use, see the accompanying README file.
 
@@ -147,9 +147,10 @@ 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 (16-bit only)
 makefile.wat	jconfig.wat	MS-DOS, OS/2, or Windows NT, Watcom C
-makefile.vc	jconfig.vc	Windows NT/95, MS Visual C++
+makefile.vc	jconfig.vc	Windows NT/9x, MS Visual C++
-make*.vc6	jconfig.vc	Windows NT/95, MS Visual C++ 6
+make*.vc6	jconfig.vc	Windows NT/9x, MS Visual C++ 6
-make*.v10	jconfig.vc	Windows NT/95, MS Visual C++ 2010 (v10)
+make*.v10	jconfig.vc	Windows NT/9x, MS Visual C++ 2010 (v10)
+makefile.b32	jconfig.vc	Windows NT/9x, Borland C++ 32-bit (bcc32)
 makefile.mms	jconfig.vms	Digital VMS, with MMS software
 makefile.vms	jconfig.vms	Digital VMS, without MMS software
 

jconfig.vc

@@ -1,4 +1,5 @@
-/* jconfig.vc --- jconfig.h for Microsoft Visual C++ on Windows 95 or NT. */
+/* jconfig.vc --- jconfig.h for Microsoft Visual C++ on Windows 9x or NT. */
+/* This file also works for Borland C++ 32-bit (bcc32) on Windows 9x or NT. */
 /* see jconfig.txt for explanations */
 
 #define HAVE_PROTOTYPES

jdarith.c

@@ -1,7 +1,7 @@
 /*
  * jdarith.c
  *
- * Developed 1997-2013 by Guido Vollbeding.
+ * Developed 1997-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -94,7 +94,7 @@ get_byte (j_decompress_ptr cinfo)
  * (instead of fixed) with the bit shift counter CT.
  * Thus, we also need only one (variable instead of
  * fixed size) shift for the LPS/MPS decision, and
- * we can get away with any renormalization update
+ * we can do away with any renormalization update
  * of C (except for new data insertion, of course).
  *
  * I've also introduced a new scheme for accessing

jdatasrc.c

@@ -2,7 +2,7 @@
  * jdatasrc.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
- * Modified 2009-2011 by Guido Vollbeding.
+ * Modified 2009-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -247,7 +247,7 @@ jpeg_stdio_src (j_decompress_ptr cinfo, FILE * infile)
 
 GLOBAL(void)
 jpeg_mem_src (j_decompress_ptr cinfo,
-	      unsigned char * inbuffer, unsigned long insize)
+	      const unsigned char * inbuffer, unsigned long insize)
 {
   struct jpeg_source_mgr * src;
 
@@ -271,5 +271,5 @@ jpeg_mem_src (j_decompress_ptr cinfo,
   src->resync_to_restart = jpeg_resync_to_restart; /* use default method */
   src->term_source = term_source;
   src->bytes_in_buffer = (size_t) insize;
-  src->next_input_byte = (JOCTET *) inbuffer;
+  src->next_input_byte = (const JOCTET *) inbuffer;
 }

jdcolor.c

@@ -2,7 +2,7 @@
  * jdcolor.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2011-2013 by Guido Vollbeding.
+ * Modified 2011-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -25,9 +25,6 @@ typedef struct {
   INT32 * Cr_g_tab;		/* => table for Cr to G conversion */
   INT32 * Cb_g_tab;		/* => table for Cb to G conversion */
 
-  JSAMPLE * range_limit; /* pointer to normal sample range limit table, */
-		     /* or extended sample range limit table for BG_YCC */
-
   /* Private state for RGB->Y conversion */
   INT32 * rgb_y_tab;		/* => table for RGB to Y conversion */
 } my_color_deconverter;
@@ -134,8 +131,6 @@ build_ycc_rgb_table (j_decompress_ptr cinfo)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				(MAXJSAMPLE+1) * SIZEOF(INT32));
 
-  cconvert->range_limit = cinfo->sample_range_limit;
-
   for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) {
     /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */
     /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */
@@ -176,10 +171,6 @@ build_bg_ycc_rgb_table (j_decompress_ptr cinfo)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				(MAXJSAMPLE+1) * SIZEOF(INT32));
 
-  cconvert->range_limit = (JSAMPLE *)
-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-				5 * (MAXJSAMPLE+1) * SIZEOF(JSAMPLE));
-
   for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) {
     /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */
     /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */
@@ -195,20 +186,6 @@ build_bg_ycc_rgb_table (j_decompress_ptr cinfo)
     /* We also add in ONE_HALF so that need not do it in inner loop */
     cconvert->Cb_g_tab[i] = (- FIX(0.688272572)) * x + ONE_HALF;
   }
-
-  /* Cb and Cr portions can extend to double range in wide gamut case,
-   * so we prepare an appropriate extended range limit table.
-   */
-
-  /* First segment of range limit table: limit[x] = 0 for x < 0 */
-  MEMZERO(cconvert->range_limit, 2 * (MAXJSAMPLE+1) * SIZEOF(JSAMPLE));
-  cconvert->range_limit += 2 * (MAXJSAMPLE+1);
-  /* Main part of range limit table: limit[x] = x */
-  for (i = 0; i <= MAXJSAMPLE; i++)
-    cconvert->range_limit[i] = (JSAMPLE) i;
-  /* End of range limit table: limit[x] = MAXJSAMPLE for x > MAXJSAMPLE */
-  for (; i < 3 * (MAXJSAMPLE+1); i++)
-    cconvert->range_limit[i] = MAXJSAMPLE;
 }
 
 
@@ -235,7 +212,7 @@ ycc_rgb_convert (j_decompress_ptr cinfo,
   register JDIMENSION col;
   JDIMENSION num_cols = cinfo->output_width;
   /* copy these pointers into registers if possible */
-  register JSAMPLE * range_limit = cconvert->range_limit;
+  register JSAMPLE * range_limit = cinfo->sample_range_limit;
   register int * Crrtab = cconvert->Cr_r_tab;
   register int * Cbbtab = cconvert->Cb_b_tab;
   register INT32 * Crgtab = cconvert->Cr_g_tab;

jdct.h

@@ -2,6 +2,7 @@
  * jdct.h
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
+ * Modified 2002-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -78,13 +79,16 @@ typedef FAST_FLOAT FLOAT_MULT_TYPE; /* preferred floating type */
  * converting them to unsigned form (0..MAXJSAMPLE).  The raw outputs could
  * be quite far out of range if the input data is corrupt, so a bulletproof
  * range-limiting step is required.  We use a mask-and-table-lookup method
- * to do the combined operations quickly.  See the comments with
+ * to do the combined operations quickly, assuming that MAXJSAMPLE+1
- * prepare_range_limit_table (in jdmaster.c) for more info.
+ * is a power of 2.  See the comments with prepare_range_limit_table
+ * (in jdmaster.c) for more info.
  */
 
-#define IDCT_range_limit(cinfo)  ((cinfo)->sample_range_limit + CENTERJSAMPLE)
-
 #define RANGE_MASK  (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */
+#define RANGE_CENTER  (MAXJSAMPLE * 2 + 2)
+#define RANGE_SUBSET  (RANGE_CENTER - CENTERJSAMPLE)
+
+#define IDCT_range_limit(cinfo)  ((cinfo)->sample_range_limit - RANGE_SUBSET)
 
 
 /* Short forms of external names for systems with brain-damaged linkers. */
@@ -391,3 +395,23 @@ EXTERN(void) jpeg_idct_1x2
 #ifndef MULTIPLY16V16		/* default definition */
 #define MULTIPLY16V16(var1,var2)  ((var1) * (var2))
 #endif
+
+/* Like RIGHT_SHIFT, but applies to a DCTELEM.
+ * We assume that int right shift is unsigned if INT32 right shift is.
+ */
+
+#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)) << (DCTELEMBITS-(shft))) : \
+     (ishift_temp >> (shft)))
+#else
+#define ISHIFT_TEMPS
+#define IRIGHT_SHIFT(x,shft)	((x) >> (shft))
+#endif

jdmaster.c

@@ -2,7 +2,7 @@
  * jdmaster.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2002-2013 by Guido Vollbeding.
+ * Modified 2002-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -45,11 +45,23 @@ LOCAL(boolean)
 use_merged_upsample (j_decompress_ptr cinfo)
 {
 #ifdef UPSAMPLE_MERGING_SUPPORTED
-  /* Merging is the equivalent of plain box-filter upsampling */
+  /* Merging is the equivalent of plain box-filter upsampling. */
-  if (cinfo->do_fancy_upsampling || cinfo->CCIR601_sampling)
+  /* The following condition is only needed if fancy shall select
+   * a different upsampling method.  In our current implementation
+   * fancy only affects the DCT scaling, thus we can use fancy
+   * upsampling and merged upsample simultaneously, in particular
+   * with scaled DCT sizes larger than the default DCTSIZE.
+   */
+#if 0
+  if (cinfo->do_fancy_upsampling)
+    return FALSE;
+#endif
+  if (cinfo->CCIR601_sampling)
     return FALSE;
   /* jdmerge.c only supports YCC=>RGB color conversion */
-  if (cinfo->jpeg_color_space != JCS_YCbCr || cinfo->num_components != 3 ||
+  if ((cinfo->jpeg_color_space != JCS_YCbCr &&
+       cinfo->jpeg_color_space != JCS_BG_YCC) ||
+      cinfo->num_components != 3 ||
       cinfo->out_color_space != JCS_RGB ||
       cinfo->out_color_components != RGB_PIXELSIZE ||
       cinfo->color_transform)
@@ -199,30 +211,20 @@ jpeg_calc_output_dimensions (j_decompress_ptr cinfo)
  * These processes all use a common table prepared by the routine below.
  *
  * For most steps we can mathematically guarantee that the initial value
- * of x is within MAXJSAMPLE+1 of the legal range, so a table running from
+ * of x is within 2*(MAXJSAMPLE+1) of the legal range, so a table running
- * -(MAXJSAMPLE+1) to 2*MAXJSAMPLE+1 is sufficient.  But for the initial
+ * from -2*(MAXJSAMPLE+1) to 3*MAXJSAMPLE+2 is sufficient.  But for the
- * limiting step (just after the IDCT), a wildly out-of-range value is 
+ * initial limiting step (just after the IDCT), a wildly out-of-range value
- * possible if the input data is corrupt.  To avoid any chance of indexing
+ * is possible if the input data is corrupt.  To avoid any chance of indexing
  * off the end of memory and getting a bad-pointer trap, we perform the
  * post-IDCT limiting thus:
- *		x = range_limit[x & MASK];
+ *		x = (sample_range_limit - SUBSET)[(x + CENTER) & MASK];
  * where MASK is 2 bits wider than legal sample data, ie 10 bits for 8-bit
  * samples.  Under normal circumstances this is more than enough range and
  * a correct output will be generated; with bogus input data the mask will
  * cause wraparound, and we will safely generate a bogus-but-in-range output.
  * For the post-IDCT step, we want to convert the data from signed to unsigned
  * representation by adding CENTERJSAMPLE at the same time that we limit it.
- * So the post-IDCT limiting table ends up looking like this:
+ * This is accomplished with SUBSET = CENTER - CENTERJSAMPLE.
- *   CENTERJSAMPLE,CENTERJSAMPLE+1,...,MAXJSAMPLE,
- *   MAXJSAMPLE (repeat 2*(MAXJSAMPLE+1)-CENTERJSAMPLE times),
- *   0          (repeat 2*(MAXJSAMPLE+1)-CENTERJSAMPLE times),
- *   0,1,...,CENTERJSAMPLE-1
- * Negative inputs select values from the upper half of the table after
- * masking.
- *
- * We can save some space by overlapping the start of the post-IDCT table
- * with the simpler range limiting table.  The post-IDCT table begins at
- * sample_range_limit + CENTERJSAMPLE.
  *
  * Note that the table is allocated in near data space on PCs; it's small
  * enough and used often enough to justify this.
@@ -237,23 +239,17 @@ prepare_range_limit_table (j_decompress_ptr cinfo)
 
   table = (JSAMPLE *)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-		(5 * (MAXJSAMPLE+1) + CENTERJSAMPLE) * SIZEOF(JSAMPLE));
+				5 * (MAXJSAMPLE+1) * SIZEOF(JSAMPLE));
-  table += (MAXJSAMPLE+1);	/* allow negative subscripts of simple table */
+  /* First segment of range limit table: limit[x] = 0 for x < 0 */
+  MEMZERO(table, 2 * (MAXJSAMPLE+1) * SIZEOF(JSAMPLE));
+  table += 2 * (MAXJSAMPLE+1);	/* allow negative subscripts of table */
   cinfo->sample_range_limit = table;
-  /* First segment of "simple" table: limit[x] = 0 for x < 0 */
+  /* Main part of range limit table: limit[x] = x */
-  MEMZERO(table - (MAXJSAMPLE+1), (MAXJSAMPLE+1) * SIZEOF(JSAMPLE));
-  /* Main part of "simple" table: limit[x] = x */
   for (i = 0; i <= MAXJSAMPLE; i++)
     table[i] = (JSAMPLE) i;
-  table += CENTERJSAMPLE;	/* Point to where post-IDCT table starts */
+  /* End of range limit table: limit[x] = MAXJSAMPLE for x > MAXJSAMPLE */
-  /* End of simple table, rest of first half of post-IDCT table */
+  for (; i < 3 * (MAXJSAMPLE+1); i++)
-  for (i = CENTERJSAMPLE; i < 2*(MAXJSAMPLE+1); i++)
     table[i] = MAXJSAMPLE;
-  /* Second half of post-IDCT table */
-  MEMZERO(table + (2 * (MAXJSAMPLE+1)),
-	  (2 * (MAXJSAMPLE+1) - CENTERJSAMPLE) * SIZEOF(JSAMPLE));
-  MEMCOPY(table + (4 * (MAXJSAMPLE+1) - CENTERJSAMPLE),
-	  cinfo->sample_range_limit, CENTERJSAMPLE * SIZEOF(JSAMPLE));
 }
 
 

jdmerge.c

@@ -2,7 +2,7 @@
  * jdmerge.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
- * Modified 2013 by Guido Vollbeding.
+ * Modified 2013-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -24,7 +24,7 @@
  * multiplications needed for color conversion.
  *
  * This file currently provides implementations for the following cases:
- *	YCbCr => RGB color conversion only.
+ *	YCC => RGB color conversion only (YCbCr or BG_YCC).
  *	Sampling ratios of 2h1v or 2h2v.
  *	No scaling needed at upsample time.
  *	Corner-aligned (non-CCIR601) sampling alignment.
@@ -76,12 +76,13 @@ typedef my_upsampler * my_upsample_ptr;
 
 
 /*
- * Initialize tables for YCC->RGB colorspace conversion.
+ * Initialize tables for YCbCr->RGB and BG_YCC->RGB colorspace conversion.
  * This is taken directly from jdcolor.c; see that file for more info.
  */
 
 LOCAL(void)
 build_ycc_rgb_table (j_decompress_ptr cinfo)
+/* Normal case, sYCC */
 {
   my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
   int i;
@@ -119,6 +120,46 @@ build_ycc_rgb_table (j_decompress_ptr cinfo)
 }
 
 
+LOCAL(void)
+build_bg_ycc_rgb_table (j_decompress_ptr cinfo)
+/* Wide gamut case, bg-sYCC */
+{
+  my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
+  int i;
+  INT32 x;
+  SHIFT_TEMPS
+
+  upsample->Cr_r_tab = (int *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(int));
+  upsample->Cb_b_tab = (int *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(int));
+  upsample->Cr_g_tab = (INT32 *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(INT32));
+  upsample->Cb_g_tab = (INT32 *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(INT32));
+
+  for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) {
+    /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */
+    /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */
+    /* Cr=>R value is nearest int to 2.804 * x */
+    upsample->Cr_r_tab[i] = (int)
+		    RIGHT_SHIFT(FIX(2.804) * x + ONE_HALF, SCALEBITS);
+    /* Cb=>B value is nearest int to 3.544 * x */
+    upsample->Cb_b_tab[i] = (int)
+		    RIGHT_SHIFT(FIX(3.544) * x + ONE_HALF, SCALEBITS);
+    /* Cr=>G value is scaled-up -1.428272572 * x */
+    upsample->Cr_g_tab[i] = (- FIX(1.428272572)) * x;
+    /* Cb=>G value is scaled-up -0.688272572 * x */
+    /* We also add in ONE_HALF so that need not do it in inner loop */
+    upsample->Cb_g_tab[i] = (- FIX(0.688272572)) * x + ONE_HALF;
+  }
+}
+
+
 /*
  * Initialize for an upsampling pass.
  */
@@ -251,32 +292,32 @@ h2v1_merged_upsample (j_decompress_ptr cinfo,
     /* Do the chroma part of the calculation */
     cb = GETJSAMPLE(*inptr1++);
     cr = GETJSAMPLE(*inptr2++);
-    cred = Crrtab[cr];
+    cred   = Crrtab[cr];
     cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
-    cblue = Cbbtab[cb];
+    cblue  = Cbbtab[cb];
     /* Fetch 2 Y values and emit 2 pixels */
     y  = GETJSAMPLE(*inptr0++);
-    outptr[RGB_RED] =   range_limit[y + cred];
+    outptr[RGB_RED]   = range_limit[y + cred];
     outptr[RGB_GREEN] = range_limit[y + cgreen];
-    outptr[RGB_BLUE] =  range_limit[y + cblue];
+    outptr[RGB_BLUE]  = range_limit[y + cblue];
     outptr += RGB_PIXELSIZE;
     y  = GETJSAMPLE(*inptr0++);
-    outptr[RGB_RED] =   range_limit[y + cred];
+    outptr[RGB_RED]   = range_limit[y + cred];
     outptr[RGB_GREEN] = range_limit[y + cgreen];
-    outptr[RGB_BLUE] =  range_limit[y + cblue];
+    outptr[RGB_BLUE]  = range_limit[y + cblue];
     outptr += RGB_PIXELSIZE;
   }
   /* If image width is odd, do the last output column separately */
   if (cinfo->output_width & 1) {
     cb = GETJSAMPLE(*inptr1);
     cr = GETJSAMPLE(*inptr2);
-    cred = Crrtab[cr];
+    cred   = Crrtab[cr];
     cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
-    cblue = Cbbtab[cb];
+    cblue  = Cbbtab[cb];
     y  = GETJSAMPLE(*inptr0);
-    outptr[RGB_RED] =   range_limit[y + cred];
+    outptr[RGB_RED]   = range_limit[y + cred];
     outptr[RGB_GREEN] = range_limit[y + cgreen];
-    outptr[RGB_BLUE] =  range_limit[y + cblue];
+    outptr[RGB_BLUE]  = range_limit[y + cblue];
   }
 }
 
@@ -315,46 +356,46 @@ h2v2_merged_upsample (j_decompress_ptr cinfo,
     /* Do the chroma part of the calculation */
     cb = GETJSAMPLE(*inptr1++);
     cr = GETJSAMPLE(*inptr2++);
-    cred = Crrtab[cr];
+    cred   = Crrtab[cr];
     cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
-    cblue = Cbbtab[cb];
+    cblue  = Cbbtab[cb];
     /* Fetch 4 Y values and emit 4 pixels */
     y  = GETJSAMPLE(*inptr00++);
-    outptr0[RGB_RED] =   range_limit[y + cred];
+    outptr0[RGB_RED]   = range_limit[y + cred];
     outptr0[RGB_GREEN] = range_limit[y + cgreen];
-    outptr0[RGB_BLUE] =  range_limit[y + cblue];
+    outptr0[RGB_BLUE]  = range_limit[y + cblue];
     outptr0 += RGB_PIXELSIZE;
     y  = GETJSAMPLE(*inptr00++);
-    outptr0[RGB_RED] =   range_limit[y + cred];
+    outptr0[RGB_RED]   = range_limit[y + cred];
     outptr0[RGB_GREEN] = range_limit[y + cgreen];
-    outptr0[RGB_BLUE] =  range_limit[y + cblue];
+    outptr0[RGB_BLUE]  = range_limit[y + cblue];
     outptr0 += RGB_PIXELSIZE;
     y  = GETJSAMPLE(*inptr01++);
-    outptr1[RGB_RED] =   range_limit[y + cred];
+    outptr1[RGB_RED]   = range_limit[y + cred];
     outptr1[RGB_GREEN] = range_limit[y + cgreen];
-    outptr1[RGB_BLUE] =  range_limit[y + cblue];
+    outptr1[RGB_BLUE]  = range_limit[y + cblue];
     outptr1 += RGB_PIXELSIZE;
     y  = GETJSAMPLE(*inptr01++);
-    outptr1[RGB_RED] =   range_limit[y + cred];
+    outptr1[RGB_RED]   = range_limit[y + cred];
     outptr1[RGB_GREEN] = range_limit[y + cgreen];
-    outptr1[RGB_BLUE] =  range_limit[y + cblue];
+    outptr1[RGB_BLUE]  = range_limit[y + cblue];
     outptr1 += RGB_PIXELSIZE;
   }
   /* If image width is odd, do the last output column separately */
   if (cinfo->output_width & 1) {
     cb = GETJSAMPLE(*inptr1);
     cr = GETJSAMPLE(*inptr2);
-    cred = Crrtab[cr];
+    cred   = Crrtab[cr];
     cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
-    cblue = Cbbtab[cb];
+    cblue  = Cbbtab[cb];
     y  = GETJSAMPLE(*inptr00);
-    outptr0[RGB_RED] =   range_limit[y + cred];
+    outptr0[RGB_RED]   = range_limit[y + cred];
     outptr0[RGB_GREEN] = range_limit[y + cgreen];
-    outptr0[RGB_BLUE] =  range_limit[y + cblue];
+    outptr0[RGB_BLUE]  = range_limit[y + cblue];
     y  = GETJSAMPLE(*inptr01);
-    outptr1[RGB_RED] =   range_limit[y + cred];
+    outptr1[RGB_RED]   = range_limit[y + cred];
     outptr1[RGB_GREEN] = range_limit[y + cgreen];
-    outptr1[RGB_BLUE] =  range_limit[y + cblue];
+    outptr1[RGB_BLUE]  = range_limit[y + cblue];
   }
 }
 
@@ -375,7 +416,7 @@ jinit_merged_upsampler (j_decompress_ptr cinfo)
   upsample = (my_upsample_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_upsampler));
-  cinfo->upsample = (struct jpeg_upsampler *) upsample;
+  cinfo->upsample = &upsample->pub;
   upsample->pub.start_pass = start_pass_merged_upsample;
   upsample->pub.need_context_rows = FALSE;
 
@@ -395,7 +436,10 @@ jinit_merged_upsampler (j_decompress_ptr cinfo)
     upsample->spare_row = NULL;
   }
 
-  build_ycc_rgb_table(cinfo);
+  if (cinfo->jpeg_color_space == JCS_BG_YCC)
+    build_bg_ycc_rgb_table(cinfo);
+  else
+    build_ycc_rgb_table(cinfo);
 }
 
 #endif /* UPSAMPLE_MERGING_SUPPORTED */

jdsample.c

@@ -2,7 +2,7 @@
  * jdsample.c
  *
  * Copyright (C) 1991-1996, Thomas G. Lane.
- * Modified 2002-2008 by Guido Vollbeding.
+ * Modified 2002-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -296,13 +296,12 @@ jinit_upsampler (j_decompress_ptr cinfo)
   my_upsample_ptr upsample;
   int ci;
   jpeg_component_info * compptr;
-  boolean need_buffer;
   int h_in_group, v_in_group, h_out_group, v_out_group;
 
   upsample = (my_upsample_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_upsampler));
-  cinfo->upsample = (struct jpeg_upsampler *) upsample;
+  cinfo->upsample = &upsample->pub;
   upsample->pub.start_pass = start_pass_upsample;
   upsample->pub.upsample = sep_upsample;
   upsample->pub.need_context_rows = FALSE; /* until we find out differently */
@@ -325,17 +324,17 @@ jinit_upsampler (j_decompress_ptr cinfo)
     h_out_group = cinfo->max_h_samp_factor;
     v_out_group = cinfo->max_v_samp_factor;
     upsample->rowgroup_height[ci] = v_in_group; /* save for use later */
-    need_buffer = TRUE;
     if (! compptr->component_needed) {
       /* Don't bother to upsample an uninteresting component. */
       upsample->methods[ci] = noop_upsample;
-      need_buffer = FALSE;
+      continue;		/* don't need to allocate buffer */
-    } else if (h_in_group == h_out_group && v_in_group == v_out_group) {
+    }
+    if (h_in_group == h_out_group && v_in_group == v_out_group) {
       /* Fullsize components can be processed without any work. */
       upsample->methods[ci] = fullsize_upsample;
-      need_buffer = FALSE;
+      continue;		/* don't need to allocate buffer */
-    } else if (h_in_group * 2 == h_out_group &&
+    }
-	       v_in_group == v_out_group) {
+    if (h_in_group * 2 == h_out_group && v_in_group == v_out_group) {
       /* Special case for 2h1v upsampling */
       upsample->methods[ci] = h2v1_upsample;
     } else if (h_in_group * 2 == h_out_group &&
@@ -350,12 +349,10 @@ jinit_upsampler (j_decompress_ptr cinfo)
       upsample->v_expand[ci] = (UINT8) (v_out_group / v_in_group);
     } else
       ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL);
-    if (need_buffer) {
+    upsample->color_buf[ci] = (*cinfo->mem->alloc_sarray)
-      upsample->color_buf[ci] = (*cinfo->mem->alloc_sarray)
+      ((j_common_ptr) cinfo, JPOOL_IMAGE,
-	((j_common_ptr) cinfo, JPOOL_IMAGE,
+       (JDIMENSION) jround_up((long) cinfo->output_width,
-	 (JDIMENSION) jround_up((long) cinfo->output_width,
+			      (long) cinfo->max_h_samp_factor),
-				(long) cinfo->max_h_samp_factor),
+       (JDIMENSION) cinfo->max_v_samp_factor);
-	 (JDIMENSION) cinfo->max_v_samp_factor);
-    }
   }
 }

jerror.c

@@ -2,7 +2,7 @@
  * jerror.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2012 by Guido Vollbeding.
+ * Modified 2012-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -19,16 +19,16 @@
  * These routines are used by both the compression and decompression code.
  */
 
+#ifdef USE_WINDOWS_MESSAGEBOX
+#include <windows.h>
+#endif
+
 /* this is not a core library module, so it doesn't define JPEG_INTERNALS */
 #include "jinclude.h"
 #include "jpeglib.h"
 #include "jversion.h"
 #include "jerror.h"
 
-#ifdef USE_WINDOWS_MESSAGEBOX
-#include <windows.h>
-#endif
-
 #ifndef EXIT_FAILURE		/* define exit() codes if not provided */
 #define EXIT_FAILURE  1
 #endif

jfdctflt.c

@@ -2,7 +2,7 @@
  * jfdctflt.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
- * Modified 2003-2009 by Guido Vollbeding.
+ * Modified 2003-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -54,6 +54,8 @@
 
 /*
  * Perform the forward DCT on one block of samples.
+ *
+ * cK represents cos(K*pi/16).
  */
 
 GLOBAL(void)
@@ -89,7 +91,7 @@ jpeg_fdct_float (FAST_FLOAT * data, JSAMPARRAY sample_data, JDIMENSION start_col
     tmp11 = tmp1 + tmp2;
     tmp12 = tmp1 - tmp2;
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = tmp10 + tmp11 - 8 * CENTERJSAMPLE; /* phase 3 */
     dataptr[4] = tmp10 - tmp11;
 

jfdctfst.c

@@ -2,7 +2,7 @@
  * jfdctfst.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
- * Modified 2003-2009 by Guido Vollbeding.
+ * Modified 2003-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -109,6 +109,8 @@
 
 /*
  * Perform the forward DCT on one block of samples.
+ *
+ * cK represents cos(K*pi/16).
  */
 
 GLOBAL(void)
@@ -145,7 +147,7 @@ jpeg_fdct_ifast (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp11 = tmp1 + tmp2;
     tmp12 = tmp1 - tmp2;
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = tmp10 + tmp11 - 8 * CENTERJSAMPLE; /* phase 3 */
     dataptr[4] = tmp10 - tmp11;
 

jfdctint.c

@@ -2,7 +2,7 @@
  * jfdctint.c
  *
  * Copyright (C) 1991-1996, Thomas G. Lane.
- * Modification developed 2003-2013 by Guido Vollbeding.
+ * Modification developed 2003-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -194,7 +194,7 @@ jpeg_fdct_islow (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[5]);
     tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[4]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 8 * CENTERJSAMPLE) << PASS1_BITS);
     dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS);
 
@@ -367,7 +367,7 @@ jpeg_fdct_7x7 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp12 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[4]);
 
     z1 = tmp0 + tmp2;
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((z1 + tmp1 + tmp3 - 7 * CENTERJSAMPLE) << PASS1_BITS);
     tmp3 += tmp3;
@@ -503,7 +503,7 @@ jpeg_fdct_6x6 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[4]);
     tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[3]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 - 6 * CENTERJSAMPLE) << PASS1_BITS);
     dataptr[2] = (DCTELEM)
@@ -618,7 +618,7 @@ jpeg_fdct_5x5 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[4]);
     tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[3]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp2 - 5 * CENTERJSAMPLE) << (PASS1_BITS+1));
     tmp11 = MULTIPLY(tmp11, FIX(0.790569415));          /* (c2+c4)/2 */
@@ -724,7 +724,7 @@ jpeg_fdct_4x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[3]);
     tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[2]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp0 + tmp1 - 4 * CENTERJSAMPLE) << (PASS1_BITS+2));
     dataptr[2] = (DCTELEM) ((tmp0 - tmp1) << (PASS1_BITS+2));
@@ -818,7 +818,7 @@ jpeg_fdct_3x3 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 
     tmp2 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[2]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp0 + tmp1 - 3 * CENTERJSAMPLE) << (PASS1_BITS+2));
     dataptr[2] = (DCTELEM)
@@ -876,7 +876,7 @@ jpeg_fdct_3x3 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 GLOBAL(void)
 jpeg_fdct_2x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 {
-  INT32 tmp0, tmp1, tmp2, tmp3;
+  DCTELEM tmp0, tmp1, tmp2, tmp3;
   JSAMPROW elemptr;
 
   /* Pre-zero output coefficient block. */
@@ -904,13 +904,13 @@ jpeg_fdct_2x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
    */
 
   /* Column 0 */
-  /* Apply unsigned->signed conversion */
+  /* Apply unsigned->signed conversion. */
-  data[DCTSIZE*0] = (DCTELEM) ((tmp0 + tmp2 - 4 * CENTERJSAMPLE) << 4);
+  data[DCTSIZE*0] = (tmp0 + tmp2 - 4 * CENTERJSAMPLE) << 4;
-  data[DCTSIZE*1] = (DCTELEM) ((tmp0 - tmp2) << 4);
+  data[DCTSIZE*1] = (tmp0 - tmp2) << 4;
 
   /* Column 1 */
-  data[DCTSIZE*0+1] = (DCTELEM) ((tmp1 + tmp3) << 4);
+  data[DCTSIZE*0+1] = (tmp1 + tmp3) << 4;
-  data[DCTSIZE*1+1] = (DCTELEM) ((tmp1 - tmp3) << 4);
+  data[DCTSIZE*1+1] = (tmp1 - tmp3) << 4;
 }
 
 
@@ -921,14 +921,17 @@ jpeg_fdct_2x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 GLOBAL(void)
 jpeg_fdct_1x1 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 {
+  DCTELEM dcval;
+
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
+  dcval = GETJSAMPLE(sample_data[0][start_col]);
+
   /* We leave the result scaled up by an overall factor of 8. */
   /* We must also scale the output by (8/1)**2 = 2**6. */
-  /* Apply unsigned->signed conversion */
+  /* Apply unsigned->signed conversion. */
-  data[0] = (DCTELEM)
+  data[0] = (dcval - CENTERJSAMPLE) << 6;
-    ((GETJSAMPLE(sample_data[0][start_col]) - CENTERJSAMPLE) << 6);
 }
 
 
@@ -976,7 +979,7 @@ jpeg_fdct_9x9 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 
     z1 = tmp0 + tmp2 + tmp3;
     z2 = tmp1 + tmp4;
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM) ((z1 + z2 - 9 * CENTERJSAMPLE) << 1);
     dataptr[6] = (DCTELEM)
       DESCALE(MULTIPLY(z1 - z2 - z2, FIX(0.707106781)),  /* c6 */
@@ -1130,7 +1133,7 @@ jpeg_fdct_10x10 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[6]);
     tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[5]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 + tmp12 - 10 * CENTERJSAMPLE) << 1);
     tmp12 += tmp12;
@@ -1291,7 +1294,7 @@ jpeg_fdct_11x11 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp13 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[7]);
     tmp14 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[6]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp0 + tmp1 + tmp2 + tmp3 + tmp4 + tmp5 - 11 * CENTERJSAMPLE) << 1);
     tmp5 += tmp5;
@@ -1480,7 +1483,7 @@ jpeg_fdct_12x12 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[7]);
     tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[6]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM) (tmp10 + tmp11 + tmp12 - 12 * CENTERJSAMPLE);
     dataptr[6] = (DCTELEM) (tmp13 - tmp14 - tmp15);
     dataptr[4] = (DCTELEM)
@@ -1641,7 +1644,7 @@ jpeg_fdct_13x13 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp14 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[8]);
     tmp15 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[7]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       (tmp0 + tmp1 + tmp2 + tmp3 + tmp4 + tmp5 + tmp6 - 13 * CENTERJSAMPLE);
     tmp6 += tmp6;
@@ -1848,7 +1851,7 @@ jpeg_fdct_14x14 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[8]);
     tmp6 = GETJSAMPLE(elemptr[6]) - GETJSAMPLE(elemptr[7]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       (tmp10 + tmp11 + tmp12 + tmp13 - 14 * CENTERJSAMPLE);
     tmp13 += tmp13;
@@ -2047,7 +2050,7 @@ jpeg_fdct_15x15 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     z1 = tmp0 + tmp4 + tmp5;
     z2 = tmp1 + tmp3 + tmp6;
     z3 = tmp2 + tmp7;
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM) (z1 + z2 + z3 - 15 * CENTERJSAMPLE);
     z3 += z3;
     dataptr[6] = (DCTELEM)
@@ -2234,7 +2237,7 @@ jpeg_fdct_16x16 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp6 = GETJSAMPLE(elemptr[6]) - GETJSAMPLE(elemptr[9]);
     tmp7 = GETJSAMPLE(elemptr[7]) - GETJSAMPLE(elemptr[8]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 + tmp12 + tmp13 - 16 * CENTERJSAMPLE) << PASS1_BITS);
     dataptr[4] = (DCTELEM)
@@ -2443,7 +2446,7 @@ jpeg_fdct_16x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp6 = GETJSAMPLE(elemptr[6]) - GETJSAMPLE(elemptr[9]);
     tmp7 = GETJSAMPLE(elemptr[7]) - GETJSAMPLE(elemptr[8]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 + tmp12 + tmp13 - 16 * CENTERJSAMPLE) << PASS1_BITS);
     dataptr[4] = (DCTELEM)
@@ -2624,7 +2627,7 @@ jpeg_fdct_14x7 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[8]);
     tmp6 = GETJSAMPLE(elemptr[6]) - GETJSAMPLE(elemptr[7]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 + tmp12 + tmp13 - 14 * CENTERJSAMPLE) << PASS1_BITS);
     tmp13 += tmp13;
@@ -2786,7 +2789,7 @@ jpeg_fdct_12x6 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[7]);
     tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[6]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 + tmp12 - 12 * CENTERJSAMPLE) << PASS1_BITS);
     dataptr[6] = (DCTELEM) ((tmp13 - tmp14 - tmp15) << PASS1_BITS);
@@ -2922,7 +2925,7 @@ jpeg_fdct_10x5 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[6]);
     tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[5]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 + tmp12 - 10 * CENTERJSAMPLE) << PASS1_BITS);
     tmp12 += tmp12;
@@ -3057,7 +3060,7 @@ jpeg_fdct_8x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[5]);
     tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[4]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 - 8 * CENTERJSAMPLE) << (PASS1_BITS+1));
     dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << (PASS1_BITS+1));
@@ -3192,7 +3195,7 @@ jpeg_fdct_6x3 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[4]);
     tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[3]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 - 6 * CENTERJSAMPLE) << (PASS1_BITS+1));
     dataptr[2] = (DCTELEM)
@@ -3288,7 +3291,7 @@ jpeg_fdct_4x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[3]);
     tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[2]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp0 + tmp1 - 4 * CENTERJSAMPLE) << (PASS1_BITS+3));
     dataptr[2] = (DCTELEM) ((tmp0 - tmp1) << (PASS1_BITS+3));
@@ -3342,7 +3345,7 @@ jpeg_fdct_4x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 GLOBAL(void)
 jpeg_fdct_2x1 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 {
-  INT32 tmp0, tmp1;
+  DCTELEM tmp0, tmp1;
   JSAMPROW elemptr;
 
   /* Pre-zero output coefficient block. */
@@ -3359,12 +3362,12 @@ jpeg_fdct_2x1 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 
   /* Even part */
 
-  /* Apply unsigned->signed conversion */
+  /* Apply unsigned->signed conversion. */
-  data[0] = (DCTELEM) ((tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 5);
+  data[0] = (tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 5;
 
   /* Odd part */
 
-  data[1] = (DCTELEM) ((tmp0 - tmp1) << 5);
+  data[1] = (tmp0 - tmp1) << 5;
 }
 
 
@@ -3417,7 +3420,7 @@ jpeg_fdct_8x16 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[5]);
     tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[4]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 8 * CENTERJSAMPLE) << PASS1_BITS);
     dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS);
 
@@ -3607,7 +3610,7 @@ jpeg_fdct_7x14 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp12 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[4]);
 
     z1 = tmp0 + tmp2;
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((z1 + tmp1 + tmp3 - 7 * CENTERJSAMPLE) << PASS1_BITS);
     tmp3 += tmp3;
@@ -3789,7 +3792,7 @@ jpeg_fdct_6x12 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[4]);
     tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[3]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp11 - 6 * CENTERJSAMPLE) << PASS1_BITS);
     dataptr[2] = (DCTELEM)
@@ -3938,7 +3941,7 @@ jpeg_fdct_5x10 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[4]);
     tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[3]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp10 + tmp2 - 5 * CENTERJSAMPLE) << PASS1_BITS);
     tmp11 = MULTIPLY(tmp11, FIX(0.790569415));          /* (c2+c4)/2 */
@@ -4081,7 +4084,7 @@ jpeg_fdct_4x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[3]);
     tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[2]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp0 + tmp1 - 4 * CENTERJSAMPLE) << (PASS1_BITS+1));
     dataptr[2] = (DCTELEM) ((tmp0 - tmp1) << (PASS1_BITS+1));
@@ -4220,7 +4223,7 @@ jpeg_fdct_3x6 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 
     tmp2 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[2]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM)
       ((tmp0 + tmp1 - 3 * CENTERJSAMPLE) << (PASS1_BITS+1));
     dataptr[2] = (DCTELEM)
@@ -4321,7 +4324,7 @@ jpeg_fdct_2x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     tmp0 = GETJSAMPLE(elemptr[0]);
     tmp1 = GETJSAMPLE(elemptr[1]);
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = (DCTELEM) ((tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 3);
 
     /* Odd part */
@@ -4377,7 +4380,7 @@ jpeg_fdct_2x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 GLOBAL(void)
 jpeg_fdct_1x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
 {
-  INT32 tmp0, tmp1;
+  DCTELEM tmp0, tmp1;
 
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
@@ -4394,12 +4397,12 @@ jpeg_fdct_1x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   tmp0 = GETJSAMPLE(sample_data[0][start_col]);
   tmp1 = GETJSAMPLE(sample_data[1][start_col]);
 
-  /* Apply unsigned->signed conversion */
+  /* Apply unsigned->signed conversion. */
-  data[DCTSIZE*0] = (DCTELEM) ((tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 5);
+  data[DCTSIZE*0] = (tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 5;
 
   /* Odd part */
 
-  data[DCTSIZE*1] = (DCTELEM) ((tmp0 - tmp1) << 5);
+  data[DCTSIZE*1] = (tmp0 - tmp1) << 5;
 }
 
 #endif /* DCT_SCALING_SUPPORTED */

jidctflt.c

@@ -2,7 +2,7 @@
  * jidctflt.c
  *
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * Modified 2010 by Guido Vollbeding.
+ * Modified 2010-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -63,6 +63,8 @@
 
 /*
  * Perform dequantization and inverse DCT on one block of coefficients.
+ *
+ * cK represents cos(K*pi/16).
  */
 
 GLOBAL(void)
@@ -77,7 +79,7 @@ jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   FLOAT_MULT_TYPE * quantptr;
   FAST_FLOAT * wsptr;
   JSAMPROW outptr;
-  JSAMPLE *range_limit = cinfo->sample_range_limit;
+  JSAMPLE *range_limit = IDCT_range_limit(cinfo);
   int ctr;
   FAST_FLOAT workspace[DCTSIZE2]; /* buffers data between passes */
 
@@ -95,14 +97,14 @@ jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
      * With typical images and quantization tables, half or more of the
      * column DCT calculations can be simplified this way.
      */
-    
+
     if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 &&
 	inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 &&
 	inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 &&
 	inptr[DCTSIZE*7] == 0) {
       /* AC terms all zero */
       FAST_FLOAT dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);
-      
+
       wsptr[DCTSIZE*0] = dcval;
       wsptr[DCTSIZE*1] = dcval;
       wsptr[DCTSIZE*2] = dcval;
@@ -111,13 +113,13 @@ jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
       wsptr[DCTSIZE*5] = dcval;
       wsptr[DCTSIZE*6] = dcval;
       wsptr[DCTSIZE*7] = dcval;
-      
+
       inptr++;			/* advance pointers to next column */
       quantptr++;
       wsptr++;
       continue;
     }
-    
+
     /* Even part */
 
     tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);
@@ -135,7 +137,7 @@ jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     tmp3 = tmp10 - tmp13;
     tmp1 = tmp11 + tmp12;
     tmp2 = tmp11 - tmp12;
-    
+
     /* Odd part */
 
     tmp4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]);
@@ -172,7 +174,7 @@ jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     quantptr++;
     wsptr++;
   }
-  
+
   /* Pass 2: process rows from work array, store into output array. */
 
   wsptr = workspace;
@@ -183,16 +185,17 @@ jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
      * the simplification applies less often (typically 5% to 10% of the time).
      * And testing floats for zero is relatively expensive, so we don't bother.
      */
-    
+
     /* Even part */
 
-    /* Apply signed->unsigned and prepare float->int conversion */
+    /* Prepare range-limit and float->int conversion */
-    z5 = wsptr[0] + ((FAST_FLOAT) CENTERJSAMPLE + (FAST_FLOAT) 0.5);
+    z5 = wsptr[0] + (((FAST_FLOAT) RANGE_CENTER) + ((FAST_FLOAT) 0.5));
     tmp10 = z5 + wsptr[4];
     tmp11 = z5 - wsptr[4];
 
     tmp13 = wsptr[2] + wsptr[6];
-    tmp12 = (wsptr[2] - wsptr[6]) * ((FAST_FLOAT) 1.414213562) - tmp13;
+    tmp12 = (wsptr[2] - wsptr[6]) *
+	      ((FAST_FLOAT) 1.414213562) - tmp13; /* 2*c4 */
 
     tmp0 = tmp10 + tmp13;
     tmp3 = tmp10 - tmp13;
@@ -206,28 +209,28 @@ jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     z11 = wsptr[1] + wsptr[7];
     z12 = wsptr[1] - wsptr[7];
 
-    tmp7 = z11 + z13;
+    tmp7 = z11 + z13;		/* phase 5 */
-    tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562);
+    tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562); /* 2*c4 */
 
     z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */
     tmp10 = z5 - z12 * ((FAST_FLOAT) 1.082392200); /* 2*(c2-c6) */
     tmp12 = z5 - z10 * ((FAST_FLOAT) 2.613125930); /* 2*(c2+c6) */
 
-    tmp6 = tmp12 - tmp7;
+    tmp6 = tmp12 - tmp7;	/* phase 2 */
     tmp5 = tmp11 - tmp6;
     tmp4 = tmp10 - tmp5;
 
     /* Final output stage: float->int conversion and range-limit */
 
-    outptr[0] = range_limit[((int) (tmp0 + tmp7)) & RANGE_MASK];
+    outptr[0] = range_limit[(int) (tmp0 + tmp7) & RANGE_MASK];
-    outptr[7] = range_limit[((int) (tmp0 - tmp7)) & RANGE_MASK];
+    outptr[7] = range_limit[(int) (tmp0 - tmp7) & RANGE_MASK];
-    outptr[1] = range_limit[((int) (tmp1 + tmp6)) & RANGE_MASK];
+    outptr[1] = range_limit[(int) (tmp1 + tmp6) & RANGE_MASK];
-    outptr[6] = range_limit[((int) (tmp1 - tmp6)) & RANGE_MASK];
+    outptr[6] = range_limit[(int) (tmp1 - tmp6) & RANGE_MASK];
-    outptr[2] = range_limit[((int) (tmp2 + tmp5)) & RANGE_MASK];
+    outptr[2] = range_limit[(int) (tmp2 + tmp5) & RANGE_MASK];
-    outptr[5] = range_limit[((int) (tmp2 - tmp5)) & RANGE_MASK];
+    outptr[5] = range_limit[(int) (tmp2 - tmp5) & RANGE_MASK];
-    outptr[3] = range_limit[((int) (tmp3 + tmp4)) & RANGE_MASK];
+    outptr[3] = range_limit[(int) (tmp3 + tmp4) & RANGE_MASK];
-    outptr[4] = range_limit[((int) (tmp3 - tmp4)) & RANGE_MASK];
+    outptr[4] = range_limit[(int) (tmp3 - tmp4) & RANGE_MASK];
-    
+
     wsptr += DCTSIZE;		/* advance pointer to next row */
   }
 }

jidctfst.c

@@ -2,6 +2,7 @@
  * jidctfst.c
  *
  * Copyright (C) 1994-1998, Thomas G. Lane.
+ * Modified 2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -133,35 +134,10 @@
 #endif
 
 
-/* Like DESCALE, but applies to a DCTELEM and produces an int.
- * We assume that int right shift is unsigned if INT32 right shift is.
- */
-
-#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)) << (DCTELEMBITS-(shft))) : \
-     (ishift_temp >> (shft)))
-#else
-#define ISHIFT_TEMPS
-#define IRIGHT_SHIFT(x,shft)	((x) >> (shft))
-#endif
-
-#ifdef USE_ACCURATE_ROUNDING
-#define IDESCALE(x,n)  ((int) IRIGHT_SHIFT((x) + (1 << ((n)-1)), n))
-#else
-#define IDESCALE(x,n)  ((int) IRIGHT_SHIFT(x, n))
-#endif
-
-
 /*
  * Perform dequantization and inverse DCT on one block of coefficients.
+ *
+ * cK represents cos(K*pi/16).
  */
 
 GLOBAL(void)
@@ -180,7 +156,7 @@ jpeg_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   int ctr;
   int workspace[DCTSIZE2];	/* buffers data between passes */
   SHIFT_TEMPS			/* for DESCALE */
-  ISHIFT_TEMPS			/* for IDESCALE */
+  ISHIFT_TEMPS			/* for IRIGHT_SHIFT */
 
   /* Pass 1: process columns from input, store into work array. */
 
@@ -253,12 +229,12 @@ jpeg_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562); /* 2*c4 */
 
     z5 = MULTIPLY(z10 + z12, FIX_1_847759065); /* 2*c2 */
-    tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5; /* 2*(c2-c6) */
+    tmp10 = z5 - MULTIPLY(z12, FIX_1_082392200); /* 2*(c2-c6) */
-    tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5; /* -2*(c2+c6) */
+    tmp12 = z5 - MULTIPLY(z10, FIX_2_613125930); /* 2*(c2+c6) */
 
     tmp6 = tmp12 - tmp7;	/* phase 2 */
     tmp5 = tmp11 - tmp6;
-    tmp4 = tmp10 + tmp5;
+    tmp4 = tmp10 - tmp5;
 
     wsptr[DCTSIZE*0] = (int) (tmp0 + tmp7);
     wsptr[DCTSIZE*7] = (int) (tmp0 - tmp7);
@@ -266,21 +242,28 @@ jpeg_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     wsptr[DCTSIZE*6] = (int) (tmp1 - tmp6);
     wsptr[DCTSIZE*2] = (int) (tmp2 + tmp5);
     wsptr[DCTSIZE*5] = (int) (tmp2 - tmp5);
-    wsptr[DCTSIZE*4] = (int) (tmp3 + tmp4);
+    wsptr[DCTSIZE*3] = (int) (tmp3 + tmp4);
-    wsptr[DCTSIZE*3] = (int) (tmp3 - tmp4);
+    wsptr[DCTSIZE*4] = (int) (tmp3 - tmp4);
 
     inptr++;			/* advance pointers to next column */
     quantptr++;
     wsptr++;
   }
   
-  /* Pass 2: process rows from work array, store into output array. */
+  /* Pass 2: process rows from work array, store into output array.
-  /* Note that we must descale the results by a factor of 8 == 2**3, */
+   * Note that we must descale the results by a factor of 8 == 2**3,
-  /* and also undo the PASS1_BITS scaling. */
+   * and also undo the PASS1_BITS scaling.
+   */
 
   wsptr = workspace;
   for (ctr = 0; ctr < DCTSIZE; ctr++) {
     outptr = output_buf[ctr] + output_col;
+
+    /* Add range center and fudge factor for final descale and range-limit. */
+    z5 = (DCTELEM) wsptr[0] +
+	   ((((DCTELEM) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (1 << (PASS1_BITS+2)));
+
     /* Rows of zeroes can be exploited in the same way as we did with columns.
      * However, the column calculation has created many nonzero AC terms, so
      * the simplification applies less often (typically 5% to 10% of the time).
@@ -293,7 +276,7 @@ jpeg_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     if (wsptr[1] == 0 && wsptr[2] == 0 && wsptr[3] == 0 && wsptr[4] == 0 &&
 	wsptr[5] == 0 && wsptr[6] == 0 && wsptr[7] == 0) {
       /* AC terms all zero */
-      JSAMPLE dcval = range_limit[IDESCALE(wsptr[0], PASS1_BITS+3)
+      JSAMPLE dcval = range_limit[(int) IRIGHT_SHIFT(z5, PASS1_BITS+3)
 				  & RANGE_MASK];
       
       outptr[0] = dcval;
@@ -312,12 +295,12 @@ jpeg_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     
     /* Even part */
 
-    tmp10 = ((DCTELEM) wsptr[0] + (DCTELEM) wsptr[4]);
+    tmp10 = z5 + (DCTELEM) wsptr[4];
-    tmp11 = ((DCTELEM) wsptr[0] - (DCTELEM) wsptr[4]);
+    tmp11 = z5 - (DCTELEM) wsptr[4];
 
-    tmp13 = ((DCTELEM) wsptr[2] + (DCTELEM) wsptr[6]);
+    tmp13 = (DCTELEM) wsptr[2] + (DCTELEM) wsptr[6];
-    tmp12 = MULTIPLY((DCTELEM) wsptr[2] - (DCTELEM) wsptr[6], FIX_1_414213562)
+    tmp12 = MULTIPLY((DCTELEM) wsptr[2] - (DCTELEM) wsptr[6],
-	    - tmp13;
+		     FIX_1_414213562) - tmp13; /* 2*c4 */
 
     tmp0 = tmp10 + tmp13;
     tmp3 = tmp10 - tmp13;
@@ -335,30 +318,30 @@ jpeg_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562); /* 2*c4 */
 
     z5 = MULTIPLY(z10 + z12, FIX_1_847759065); /* 2*c2 */
-    tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5; /* 2*(c2-c6) */
+    tmp10 = z5 - MULTIPLY(z12, FIX_1_082392200); /* 2*(c2-c6) */
-    tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5; /* -2*(c2+c6) */
+    tmp12 = z5 - MULTIPLY(z10, FIX_2_613125930); /* 2*(c2+c6) */
 
     tmp6 = tmp12 - tmp7;	/* phase 2 */
     tmp5 = tmp11 - tmp6;
-    tmp4 = tmp10 + tmp5;
+    tmp4 = tmp10 - tmp5;
 
     /* Final output stage: scale down by a factor of 8 and range-limit */
 
-    outptr[0] = range_limit[IDESCALE(tmp0 + tmp7, PASS1_BITS+3)
+    outptr[0] = range_limit[(int) IRIGHT_SHIFT(tmp0 + tmp7, PASS1_BITS+3)
 			    & RANGE_MASK];
-    outptr[7] = range_limit[IDESCALE(tmp0 - tmp7, PASS1_BITS+3)
+    outptr[7] = range_limit[(int) IRIGHT_SHIFT(tmp0 - tmp7, PASS1_BITS+3)
 			    & RANGE_MASK];
-    outptr[1] = range_limit[IDESCALE(tmp1 + tmp6, PASS1_BITS+3)
+    outptr[1] = range_limit[(int) IRIGHT_SHIFT(tmp1 + tmp6, PASS1_BITS+3)
 			    & RANGE_MASK];
-    outptr[6] = range_limit[IDESCALE(tmp1 - tmp6, PASS1_BITS+3)
+    outptr[6] = range_limit[(int) IRIGHT_SHIFT(tmp1 - tmp6, PASS1_BITS+3)
 			    & RANGE_MASK];
-    outptr[2] = range_limit[IDESCALE(tmp2 + tmp5, PASS1_BITS+3)
+    outptr[2] = range_limit[(int) IRIGHT_SHIFT(tmp2 + tmp5, PASS1_BITS+3)
 			    & RANGE_MASK];
-    outptr[5] = range_limit[IDESCALE(tmp2 - tmp5, PASS1_BITS+3)
+    outptr[5] = range_limit[(int) IRIGHT_SHIFT(tmp2 - tmp5, PASS1_BITS+3)
 			    & RANGE_MASK];
-    outptr[4] = range_limit[IDESCALE(tmp3 + tmp4, PASS1_BITS+3)
+    outptr[3] = range_limit[(int) IRIGHT_SHIFT(tmp3 + tmp4, PASS1_BITS+3)
 			    & RANGE_MASK];
-    outptr[3] = range_limit[IDESCALE(tmp3 - tmp4, PASS1_BITS+3)
+    outptr[4] = range_limit[(int) IRIGHT_SHIFT(tmp3 - tmp4, PASS1_BITS+3)
 			    & RANGE_MASK];
 
     wsptr += DCTSIZE;		/* advance pointer to next row */

jidctint.c

@@ -2,7 +2,7 @@
  * jidctint.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modification developed 2002-2013 by Guido Vollbeding.
+ * Modification developed 2002-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -230,13 +230,6 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
      * The rotator is c(-6).
      */
 
-    z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]);
-    z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]);
-
-    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);       /* c6 */
-    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
-    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
-
     z2 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);
     z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]);
     z2 <<= CONST_BITS;
@@ -247,6 +240,13 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     tmp0 = z2 + z3;
     tmp1 = z2 - z3;
 
+    z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]);
+    z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]);
+
+    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);       /* c6 */
+    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
+    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
+
     tmp10 = tmp0 + tmp2;
     tmp13 = tmp0 - tmp2;
     tmp11 = tmp1 + tmp3;
@@ -306,6 +306,12 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   wsptr = workspace;
   for (ctr = 0; ctr < DCTSIZE; ctr++) {
     outptr = output_buf[ctr] + output_col;
+
+    /* Add range center and fudge factor for final descale and range-limit. */
+    z2 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
+
     /* Rows of zeroes can be exploited in the same way as we did with columns.
      * However, the column calculation has created many nonzero AC terms, so
      * the simplification applies less often (typically 5% to 10% of the time).
@@ -318,7 +324,7 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     if (wsptr[1] == 0 && wsptr[2] == 0 && wsptr[3] == 0 && wsptr[4] == 0 &&
 	wsptr[5] == 0 && wsptr[6] == 0 && wsptr[7] == 0) {
       /* AC terms all zero */
-      JSAMPLE dcval = range_limit[(int) DESCALE((INT32) wsptr[0], PASS1_BITS+3)
+      JSAMPLE dcval = range_limit[(int) RIGHT_SHIFT(z2, PASS1_BITS+3)
 				  & RANGE_MASK];
 
       outptr[0] = dcval;
@@ -339,6 +345,11 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
      * The rotator is c(-6).
      */
 
+    z3 = (INT32) wsptr[4];
+
+    tmp0 = (z2 + z3) << CONST_BITS;
+    tmp1 = (z2 - z3) << CONST_BITS;
+
     z2 = (INT32) wsptr[2];
     z3 = (INT32) wsptr[6];
 
@@ -346,13 +357,6 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
     tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
 
-    /* Add fudge factor here for final descale. */
-    z2 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
-    z3 = (INT32) wsptr[4];
-
-    tmp0 = (z2 + z3) << CONST_BITS;
-    tmp1 = (z2 - z3) << CONST_BITS;
-
     tmp10 = tmp0 + tmp2;
     tmp13 = tmp0 - tmp2;
     tmp11 = tmp1 + tmp3;
@@ -508,8 +512,10 @@ jpeg_idct_7x7 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp13 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp13 = (INT32) wsptr[0] +
+	      ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	       (ONE << (PASS1_BITS+2)));
     tmp13 <<= CONST_BITS;
 
     z1 = (INT32) wsptr[2];
@@ -644,8 +650,10 @@ jpeg_idct_6x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp0 = (INT32) wsptr[0] +
+	     ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	      (ONE << (PASS1_BITS+2)));
     tmp0 <<= CONST_BITS;
     tmp2 = (INT32) wsptr[4];
     tmp10 = MULTIPLY(tmp2, FIX(0.707106781));   /* c4 */
@@ -763,8 +771,10 @@ jpeg_idct_5x5 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp12 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp12 = (INT32) wsptr[0] +
+	      ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	       (ONE << (PASS1_BITS+2)));
     tmp12 <<= CONST_BITS;
     tmp0 = (INT32) wsptr[2];
     tmp1 = (INT32) wsptr[4];
@@ -875,8 +885,10 @@ jpeg_idct_4x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp0 = (INT32) wsptr[0] +
+	     ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	      (ONE << (PASS1_BITS+2)));
     tmp2 = (INT32) wsptr[2];
 
     tmp10 = (tmp0 + tmp2) << CONST_BITS;
@@ -972,8 +984,10 @@ jpeg_idct_3x3 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp0 = (INT32) wsptr[0] +
+	     ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	      (ONE << (PASS1_BITS+2)));
     tmp0 <<= CONST_BITS;
     tmp2 = (INT32) wsptr[2];
     tmp12 = MULTIPLY(tmp2, FIX(0.707106781)); /* c2 */
@@ -1014,11 +1028,11 @@ jpeg_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 	       JCOEFPTR coef_block,
 	       JSAMPARRAY output_buf, JDIMENSION output_col)
 {
-  INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5;
+  DCTELEM tmp0, tmp1, tmp2, tmp3, tmp4, tmp5;
   ISLOW_MULT_TYPE * quantptr;
   JSAMPROW outptr;
   JSAMPLE *range_limit = IDCT_range_limit(cinfo);
-  SHIFT_TEMPS
+  ISHIFT_TEMPS
 
   /* Pass 1: process columns from input. */
 
@@ -1027,8 +1041,8 @@ jpeg_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Column 0 */
   tmp4 = DEQUANTIZE(coef_block[DCTSIZE*0], quantptr[DCTSIZE*0]);
   tmp5 = DEQUANTIZE(coef_block[DCTSIZE*1], quantptr[DCTSIZE*1]);
-  /* Add fudge factor here for final descale. */
+  /* Add range center and fudge factor for final descale and range-limit. */
-  tmp4 += ONE << 2;
+  tmp4 += (((DCTELEM) RANGE_CENTER) << 3) + (1 << 2);
 
   tmp0 = tmp4 + tmp5;
   tmp2 = tmp4 - tmp5;
@@ -1045,14 +1059,14 @@ jpeg_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Row 0 */
   outptr = output_buf[0] + output_col;
 
-  outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp0 + tmp1, 3) & RANGE_MASK];
+  outptr[0] = range_limit[(int) IRIGHT_SHIFT(tmp0 + tmp1, 3) & RANGE_MASK];
-  outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp0 - tmp1, 3) & RANGE_MASK];
+  outptr[1] = range_limit[(int) IRIGHT_SHIFT(tmp0 - tmp1, 3) & RANGE_MASK];
 
   /* Row 1 */
   outptr = output_buf[1] + output_col;
 
-  outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp2 + tmp3, 3) & RANGE_MASK];
+  outptr[0] = range_limit[(int) IRIGHT_SHIFT(tmp2 + tmp3, 3) & RANGE_MASK];
-  outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp2 - tmp3, 3) & RANGE_MASK];
+  outptr[1] = range_limit[(int) IRIGHT_SHIFT(tmp2 - tmp3, 3) & RANGE_MASK];
 }
 
 
@@ -1069,17 +1083,21 @@ jpeg_idct_1x1 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 	       JCOEFPTR coef_block,
 	       JSAMPARRAY output_buf, JDIMENSION output_col)
 {
-  int dcval;
+  DCTELEM dcval;
   ISLOW_MULT_TYPE * quantptr;
   JSAMPLE *range_limit = IDCT_range_limit(cinfo);
-  SHIFT_TEMPS
+  ISHIFT_TEMPS
 
   /* 1x1 is trivial: just take the DC coefficient divided by 8. */
-  quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
-  dcval = DEQUANTIZE(coef_block[0], quantptr[0]);
-  dcval = (int) DESCALE((INT32) dcval, 3);
 
-  output_buf[0][output_col] = range_limit[dcval & RANGE_MASK];
+  quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
+
+  dcval = DEQUANTIZE(coef_block[0], quantptr[0]);
+  /* Add range center and fudge factor for descale and range-limit. */
+  dcval += (((DCTELEM) RANGE_CENTER) << 3) + (1 << 2);
+
+  output_buf[0][output_col] =
+    range_limit[(int) IRIGHT_SHIFT(dcval, 3) & RANGE_MASK];
 }
 
 
@@ -1178,8 +1196,10 @@ jpeg_idct_9x9 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp0 = (INT32) wsptr[0] +
+	     ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	      (ONE << (PASS1_BITS+2)));
     tmp0 <<= CONST_BITS;
 
     z1 = (INT32) wsptr[2];
@@ -1361,8 +1381,10 @@ jpeg_idct_10x10 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    z3 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    z3 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
     z3 <<= CONST_BITS;
     z4 = (INT32) wsptr[4];
     z1 = MULTIPLY(z4, FIX(1.144122806));         /* c4 */
@@ -1554,8 +1576,10 @@ jpeg_idct_11x11 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp10 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp10 = (INT32) wsptr[0] +
+	      ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	       (ONE << (PASS1_BITS+2)));
     tmp10 <<= CONST_BITS;
 
     z1 = (INT32) wsptr[2];
@@ -1758,8 +1782,10 @@ jpeg_idct_12x12 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    z3 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    z3 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
     z3 <<= CONST_BITS;
 
     z4 = (INT32) wsptr[4];
@@ -1979,8 +2005,10 @@ jpeg_idct_13x13 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    z1 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    z1 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
     z1 <<= CONST_BITS;
 
     z2 = (INT32) wsptr[2];
@@ -2206,8 +2234,10 @@ jpeg_idct_14x14 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    z1 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    z1 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
     z1 <<= CONST_BITS;
     z4 = (INT32) wsptr[4];
     z2 = MULTIPLY(z4, FIX(1.274162392));         /* c4 */
@@ -2438,8 +2468,10 @@ jpeg_idct_15x15 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    z1 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    z1 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
     z1 <<= CONST_BITS;
 
     z2 = (INT32) wsptr[2];
@@ -2689,8 +2721,10 @@ jpeg_idct_16x16 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp0 = (INT32) wsptr[0] +
+	     ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	      (ONE << (PASS1_BITS+2)));
     tmp0 <<= CONST_BITS;
 
     z1 = (INT32) wsptr[4];
@@ -2964,8 +2998,10 @@ jpeg_idct_16x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp0 = (INT32) wsptr[0] +
+	     ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	      (ONE << (PASS1_BITS+2)));
     tmp0 <<= CONST_BITS;
 
     z1 = (INT32) wsptr[4];
@@ -3182,8 +3218,10 @@ jpeg_idct_14x7 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    z1 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    z1 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
     z1 <<= CONST_BITS;
     z4 = (INT32) wsptr[4];
     z2 = MULTIPLY(z4, FIX(1.274162392));         /* c4 */
@@ -3366,8 +3404,10 @@ jpeg_idct_12x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    z3 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    z3 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
     z3 <<= CONST_BITS;
 
     z4 = (INT32) wsptr[4];
@@ -3542,8 +3582,10 @@ jpeg_idct_10x5 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    z3 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    z3 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
     z3 <<= CONST_BITS;
     z4 = (INT32) wsptr[4];
     z1 = MULTIPLY(z4, FIX(1.144122806));         /* c4 */
@@ -3707,6 +3749,15 @@ jpeg_idct_8x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
      * The rotator is c(-6).
      */
 
+    /* Add range center and fudge factor for final descale and range-limit. */
+    z2 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
+    z3 = (INT32) wsptr[4];
+
+    tmp0 = (z2 + z3) << CONST_BITS;
+    tmp1 = (z2 - z3) << CONST_BITS;
+
     z2 = (INT32) wsptr[2];
     z3 = (INT32) wsptr[6];
 
@@ -3714,13 +3765,6 @@ jpeg_idct_8x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
     tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
 
-    /* Add fudge factor here for final descale. */
-    z2 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
-    z3 = (INT32) wsptr[4];
-
-    tmp0 = (z2 + z3) << CONST_BITS;
-    tmp1 = (z2 - z3) << CONST_BITS;
-
     tmp10 = tmp0 + tmp2;
     tmp13 = tmp0 - tmp2;
     tmp11 = tmp1 + tmp3;
@@ -3852,8 +3896,10 @@ jpeg_idct_6x3 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp0 = (INT32) wsptr[0] +
+	     ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	      (ONE << (PASS1_BITS+2)));
     tmp0 <<= CONST_BITS;
     tmp2 = (INT32) wsptr[4];
     tmp10 = MULTIPLY(tmp2, FIX(0.707106781));   /* c4 */
@@ -3954,8 +4000,8 @@ jpeg_idct_4x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = wsptr[0] + (ONE << 2);
+    tmp0 = wsptr[0] + ((((INT32) RANGE_CENTER) << 3) + (ONE << 2));
     tmp2 = wsptr[2];
 
     tmp10 = (tmp0 + tmp2) << CONST_BITS;
@@ -4003,11 +4049,11 @@ jpeg_idct_2x1 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 	       JCOEFPTR coef_block,
 	       JSAMPARRAY output_buf, JDIMENSION output_col)
 {
-  INT32 tmp0, tmp1;
+  DCTELEM tmp0, tmp1;
   ISLOW_MULT_TYPE * quantptr;
   JSAMPROW outptr;
   JSAMPLE *range_limit = IDCT_range_limit(cinfo);
-  SHIFT_TEMPS
+  ISHIFT_TEMPS
 
   /* Pass 1: empty. */
 
@@ -4019,8 +4065,8 @@ jpeg_idct_2x1 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Even part */
 
   tmp0 = DEQUANTIZE(coef_block[0], quantptr[0]);
-  /* Add fudge factor here for final descale. */
+  /* Add range center and fudge factor for final descale and range-limit. */
-  tmp0 += ONE << 2;
+  tmp0 += (((DCTELEM) RANGE_CENTER) << 3) + (1 << 2);
 
   /* Odd part */
 
@@ -4028,8 +4074,8 @@ jpeg_idct_2x1 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
   /* Final output stage */
 
-  outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp0 + tmp1, 3) & RANGE_MASK];
+  outptr[0] = range_limit[(int) IRIGHT_SHIFT(tmp0 + tmp1, 3) & RANGE_MASK];
-  outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp0 - tmp1, 3) & RANGE_MASK];
+  outptr[1] = range_limit[(int) IRIGHT_SHIFT(tmp0 - tmp1, 3) & RANGE_MASK];
 }
 
 
@@ -4174,6 +4220,15 @@ jpeg_idct_8x16 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
      * The rotator is c(-6).
      */
 
+    /* Add range center and fudge factor for final descale and range-limit. */
+    z2 = (INT32) wsptr[0] +
+	   ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	    (ONE << (PASS1_BITS+2)));
+    z3 = (INT32) wsptr[4];
+
+    tmp0 = (z2 + z3) << CONST_BITS;
+    tmp1 = (z2 - z3) << CONST_BITS;
+
     z2 = (INT32) wsptr[2];
     z3 = (INT32) wsptr[6];
 
@@ -4181,13 +4236,6 @@ jpeg_idct_8x16 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
     tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
 
-    /* Add fudge factor here for final descale. */
-    z2 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
-    z3 = (INT32) wsptr[4];
-
-    tmp0 = (z2 + z3) << CONST_BITS;
-    tmp1 = (z2 - z3) << CONST_BITS;
-
     tmp10 = tmp0 + tmp2;
     tmp13 = tmp0 - tmp2;
     tmp11 = tmp1 + tmp3;
@@ -4377,8 +4425,10 @@ jpeg_idct_7x14 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp23 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp23 = (INT32) wsptr[0] +
+	      ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	       (ONE << (PASS1_BITS+2)));
     tmp23 <<= CONST_BITS;
 
     z1 = (INT32) wsptr[2];
@@ -4558,8 +4608,10 @@ jpeg_idct_6x12 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp10 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp10 = (INT32) wsptr[0] +
+	      ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	       (ONE << (PASS1_BITS+2)));
     tmp10 <<= CONST_BITS;
     tmp12 = (INT32) wsptr[4];
     tmp20 = MULTIPLY(tmp12, FIX(0.707106781));   /* c4 */
@@ -4716,8 +4768,10 @@ jpeg_idct_5x10 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp12 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp12 = (INT32) wsptr[0] +
+	      ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	       (ONE << (PASS1_BITS+2)));
     tmp12 <<= CONST_BITS;
     tmp13 = (INT32) wsptr[2];
     tmp14 = (INT32) wsptr[4];
@@ -4908,8 +4962,10 @@ jpeg_idct_4x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp0 = (INT32) wsptr[0] +
+	     ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	      (ONE << (PASS1_BITS+2)));
     tmp2 = (INT32) wsptr[2];
 
     tmp10 = (tmp0 + tmp2) << CONST_BITS;
@@ -5021,8 +5077,10 @@ jpeg_idct_3x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
+    tmp0 = (INT32) wsptr[0] +
+	     ((((INT32) RANGE_CENTER) << (PASS1_BITS+3)) +
+	      (ONE << (PASS1_BITS+2)));
     tmp0 <<= CONST_BITS;
     tmp2 = (INT32) wsptr[2];
     tmp12 = MULTIPLY(tmp2, FIX(0.707106781)); /* c2 */
@@ -5117,8 +5175,10 @@ jpeg_idct_2x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
     /* Even part */
 
-    /* Add fudge factor here for final descale. */
+    /* Add range center and fudge factor for final descale and range-limit. */
-    tmp10 = wsptr[0] + (ONE << (CONST_BITS+2));
+    tmp10 = wsptr[0] +
+	      ((((INT32) RANGE_CENTER) << (CONST_BITS+3)) +
+	       (ONE << (CONST_BITS+2)));
 
     /* Odd part */
 
@@ -5148,20 +5208,20 @@ jpeg_idct_1x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 	       JCOEFPTR coef_block,
 	       JSAMPARRAY output_buf, JDIMENSION output_col)
 {
-  INT32 tmp0, tmp1;
+  DCTELEM tmp0, tmp1;
   ISLOW_MULT_TYPE * quantptr;
   JSAMPLE *range_limit = IDCT_range_limit(cinfo);
-  SHIFT_TEMPS
+  ISHIFT_TEMPS
 
   /* Process 1 column from input, store into output array. */
 
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
 
   /* Even part */
-    
+
   tmp0 = DEQUANTIZE(coef_block[DCTSIZE*0], quantptr[DCTSIZE*0]);
-  /* Add fudge factor here for final descale. */
+  /* Add range center and fudge factor for final descale and range-limit. */
-  tmp0 += ONE << 2;
+  tmp0 += (((DCTELEM) RANGE_CENTER) << 3) + (1 << 2);
 
   /* Odd part */
 
@@ -5169,10 +5229,10 @@ jpeg_idct_1x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
   /* Final output stage */
 
-  output_buf[0][output_col] = range_limit[(int) RIGHT_SHIFT(tmp0 + tmp1, 3)
+  output_buf[0][output_col] =
-					  & RANGE_MASK];
+    range_limit[(int) IRIGHT_SHIFT(tmp0 + tmp1, 3) & RANGE_MASK];
-  output_buf[1][output_col] = range_limit[(int) RIGHT_SHIFT(tmp0 - tmp1, 3)
+  output_buf[1][output_col] =
-					  & RANGE_MASK];
+    range_limit[(int) IRIGHT_SHIFT(tmp0 - tmp1, 3) & RANGE_MASK];
 }
 
 #endif /* IDCT_SCALING_SUPPORTED */

jpeglib.h

@@ -2,7 +2,7 @@
  * jpeglib.h
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2002-2013 by Guido Vollbeding.
+ * Modified 2002-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -39,7 +39,7 @@ extern "C" {
 
 #define JPEG_LIB_VERSION        90	/* Compatibility version 9.0 */
 #define JPEG_LIB_VERSION_MAJOR  9
-#define JPEG_LIB_VERSION_MINOR  1
+#define JPEG_LIB_VERSION_MINOR  2
 
 
 /* Various constants determining the sizes of things.
@@ -979,7 +979,7 @@ EXTERN(void) jpeg_mem_dest JPP((j_compress_ptr cinfo,
 			       unsigned char ** outbuffer,
 			       unsigned long * outsize));
 EXTERN(void) jpeg_mem_src JPP((j_decompress_ptr cinfo,
-			      unsigned char * inbuffer,
+			      const unsigned char * inbuffer,
 			      unsigned long insize));
 
 /* Default parameter setup for compression */

jpegtran.1

@@ -1,4 +1,4 @@
-.TH JPEGTRAN 1 "13 September 2013"
+.TH JPEGTRAN 1 "20 September 2015"
 .SH NAME
 jpegtran \- lossless transformation of JPEG files
 .SH SYNOPSIS
@@ -19,6 +19,10 @@ for example from baseline JPEG to progressive JPEG or vice versa.  It can also
 perform some rearrangements of the image data, for example turning an image
 from landscape to portrait format by rotation.
 .PP
+For EXIF files and JPEG files containing Exif data, you may prefer to use
+.B exiftran
+instead.
+.PP
 .B jpegtran
 works by rearranging the compressed data (DCT coefficients), without
 ever fully decoding the image.  Therefore, its transformations are lossless:
@@ -28,7 +32,11 @@ followed by
 .B cjpeg
 to accomplish the same conversion.  But by the same token,
 .B jpegtran
-cannot perform lossy operations such as changing the image quality.
+cannot perform lossy operations such as changing the image quality.  However,
+while the image data is losslessly transformed, metadata can be removed.  See
+the
+.B \-copy
+option for specifics.
 .PP
 .B jpegtran
 reads the named JPEG/JFIF file, or the standard input if no file is
@@ -159,7 +167,8 @@ this does not hold for the given crop parameters, we silently move the upper
 left corner up and/or left to make it so, simultaneously increasing the
 region dimensions to keep the lower right crop corner unchanged.  (Thus, the
 output image covers at least the requested region, but may cover more.)
-The adjustment of the region dimensions may be optionally disabled.
+The adjustment of the region dimensions may be optionally disabled by
+attaching an 'f' character ("force") to the width or height number.
 
 The image can be losslessly cropped by giving the switch:
 .TP
@@ -206,16 +215,17 @@ such as comment blocks:
 .TP
 .B \-copy none
 Copy no extra markers from source file.  This setting suppresses all
-comments and other excess baggage present in the source file.
+comments and other metadata in the source file.
 .TP
 .B \-copy comments
 Copy only comment markers.  This setting copies comments from the source file,
-but discards any other inessential (for image display) data.
+but discards any other metadata.
 .TP
 .B \-copy all
-Copy all extra markers.  This setting preserves miscellaneous markers
+Copy all extra markers.  This setting preserves metadata
 found in the source file, such as JFIF thumbnails, Exif data, and Photoshop
-settings.  In some files these extra markers can be sizable.
+settings.  In some files these extra markers can be sizable.  Note that this
+option will copy thumbnails as-is; they will not be transformed.
 .IP
 The default behavior is
 .BR "\-copy comments" .

jversion.h

@@ -1,7 +1,7 @@
 /*
  * jversion.h
  *
- * Copyright (C) 1991-2014, Thomas G. Lane, Guido Vollbeding.
+ * Copyright (C) 1991-2016, Thomas G. Lane, Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -9,6 +9,6 @@
  */
 
 
-#define JVERSION	"9a  19-Jan-2014"
+#define JVERSION	"9b  17-Jan-2016"
 
-#define JCOPYRIGHT	"Copyright (C) 2014, Thomas G. Lane, Guido Vollbeding"
+#define JCOPYRIGHT	"Copyright (C) 2016, Thomas G. Lane, Guido Vollbeding"

makefile.ansi

@@ -60,17 +60,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms

makefile.b32

@@ -0,0 +1,243 @@
+# Makefile for Independent JPEG Group's software
+
+# This makefile is suitable for Borland C on MS-DOS.
+# It works with Borland C++ 32-bit for DOS, revision 5.0 or later.
+# Thanks to Tom Wright and Ge' Weijers (original DOS) and
+# Joe Slater for adding 32-bit additions (needed for Borland
+# revision 5.5).
+
+# Read installation instructions before saying "make" !!
+
+# The name of your C compiler:
+CC= bcc32
+
+# You may need to adjust these cc options:
+CFLAGS= -O2 -w-par -w-stu -w-ccc -w-rch -w-aus
+# -w-par suppresses warnings about unused function parameters
+# -w-stu suppresses warnings about incomplete structures
+# -w-ccc suppresses warnings about compile-time-constant conditions
+# -w-rch suppresses warnings about unreachable code
+# Generally, we recommend defining any configuration symbols in jconfig.h,
+# NOT via -D switches here.
+
+# Link-time cc options:
+LDFLAGS=
+# -lc case-significant link
+
+# Put here the object file name for the correct system-dependent memory
+# manager file.
+# SYSDEPMEMLIB must list the same files with "+" signs for the librarian.
+SYSDEPMEM= jmemnobs.obj
+SYSDEPMEMLIB= +jmemnobs.obj
+
+# End of configurable options.
+
+
+# source files: JPEG library proper
+LIBSOURCES= jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \
+        jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \
+        jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \
+        jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \
+        jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \
+        jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \
+        jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \
+        jquant2.c jutils.c jmemmgr.c
+# memmgr back ends: compile only one of these into a working library
+SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c
+# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom
+APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \
+        rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \
+        rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c
+SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(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 transupp.h
+# documentation, test, and support files
+DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
+        wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
+        coderules.txt filelist.txt change.log
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
+        makefile.sas makefile.mms makefile.vms makvms.opt
+CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
+        jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
+        jconfig.vms
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
+TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
+        testimgp.jpg
+DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \
+        $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES)
+# library object files common to compression and decompression
+COMOBJECTS= jaricom.obj jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM)
+# compression library object files
+CLIBOBJECTS= jcapimin.obj jcapistd.obj jcarith.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 \
+        jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj
+# decompression library object files
+DLIBOBJECTS= jdapimin.obj jdapistd.obj jdarith.obj jdtrans.obj jdatasrc.obj \
+        jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdmainct.obj \
+        jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj jidctflt.obj \
+        jidctint.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 transupp.obj
+
+
+all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe
+
+libjpeg.lib: $(LIBOBJECTS)
+        - del libjpeg.lib
+        tlib libjpeg.lib /E /C @&&|
++jcapimin.obj +jcapistd.obj +jcarith.obj +jctrans.obj +jcparam.obj &
++jdatadst.obj +jcinit.obj +jcmaster.obj +jcmarker.obj +jcmainct.obj &
++jcprepct.obj +jccoefct.obj +jccolor.obj +jcsample.obj +jchuff.obj &
++jcdctmgr.obj +jfdctfst.obj +jfdctflt.obj +jfdctint.obj +jdapimin.obj &
++jdapistd.obj +jdarith.obj +jdtrans.obj +jdatasrc.obj +jdmaster.obj &
++jdinput.obj +jdmarker.obj +jdhuff.obj +jdmainct.obj +jdcoefct.obj &
++jdpostct.obj +jddctmgr.obj +jidctfst.obj +jidctflt.obj +jidctint.obj &
++jdsample.obj +jdcolor.obj +jquant1.obj +jquant2.obj +jdmerge.obj &
++jaricom.obj +jcomapi.obj +jutils.obj +jerror.obj +jmemmgr.obj &
+$(SYSDEPMEMLIB)
+|
+
+cjpeg.exe: $(COBJECTS) libjpeg.lib
+        $(CC) $(LDFLAGS) -ecjpeg.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
+        $(CC) $(CFLAGS) rdjpgcom.c
+
+wrjpgcom.exe: wrjpgcom.c
+        $(CC) $(CFLAGS) wrjpgcom.c
+
+# This "{}" syntax allows Borland Make to "batch" source files.
+# In this way, each run of the compiler can build many modules.
+.c.obj:
+        $(CC) $(CFLAGS) -c{ $<}
+
+jconfig.h: jconfig.txt
+        echo You must prepare a system-dependent jconfig.h file.
+        echo Please read the installation directions in install.txt.
+        exit 1
+
+clean:
+        - 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
+        - del testout*.*
+        djpeg -dct int -ppm -outfile testout.ppm  testorig.jpg
+        djpeg -dct int -bmp -colors 256 -outfile testout.bmp  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
+        echo n > n.tmp
+        comp testimg.ppm testout.ppm < n.tmp
+        comp testimg.bmp testout.bmp < 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
+
+
+jaricom.obj: jaricom.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.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
+jcarith.obj: jcarith.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
+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
+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
+jdarith.obj: jdarith.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
+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
+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
+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
+jmemmac.obj: jmemmac.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 transupp.h jversion.h
+rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h
+wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.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
+transupp.obj: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.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

makefile.bcc

@@ -87,17 +87,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms

makefile.dj

@@ -60,17 +60,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms

makefile.manx

@@ -61,17 +61,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms

makefile.mc6

@@ -58,17 +58,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms

makefile.mms

@@ -47,17 +47,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms

makefile.sas

@@ -69,17 +69,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms

makefile.unix

@@ -64,17 +64,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms

makefile.vc

@@ -57,17 +57,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 \
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 \
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 \
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 \
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 \
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 \
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac \
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx \
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms

makefile.wat

@@ -59,17 +59,17 @@ INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h &
 DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 &
         wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt &
         coderules.txt filelist.txt change.log
-MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc &
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 &
-        makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 &
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc &
-        makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 &
+        makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 &
-        makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 &
+        makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 &
-        maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 &
+        makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 &
-        makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 &
+        makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 &
-        makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 &
+        makejsln.v10 makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 &
-        makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 &
+        makecfil.v10 makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 &
-        makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st &
+        makervcx.v10 makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac &
-        makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas &
+        makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st makefile.manx &
-        makefile.mms makefile.vms makvms.opt
+        makefile.sas makefile.mms makefile.vms makvms.opt
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat &
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas &
         jconfig.vms

missing

@@ -3,7 +3,7 @@
 
 scriptversion=2013-10-28.13; # UTC
 
-# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+# Copyright (C) 1996-2014 Free Software Foundation, Inc.
 # Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # This program is free software; you can redistribute it and/or modify

rdswitch.c

@@ -2,6 +2,7 @@
  * rdswitch.c
  *
  * Copyright (C) 1991-1996, Thomas G. Lane.
+ * Modified 2003-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -347,8 +348,9 @@ set_sample_factors (j_compress_ptr cinfo, char *arg)
 	return FALSE;
       if ((ch1 != 'x' && ch1 != 'X') || ch2 != ',') /* syntax check */
 	return FALSE;
-      if (val1 <= 0 || val1 > 4 || val2 <= 0 || val2 > 4) {
+      if (val1 <= 0 || val1 > MAX_SAMP_FACTOR ||
-	fprintf(stderr, "JPEG sampling factors must be 1..4\n");
+	  val2 <= 0 || val2 > MAX_SAMP_FACTOR) {
+	fprintf(stderr, "JPEG sampling factors must be 1..%d\n", MAX_SAMP_FACTOR);
 	return FALSE;
       }
       cinfo->comp_info[ci].h_samp_factor = val1;

usage.txt

@@ -14,7 +14,7 @@ INTRODUCTION
 
 These programs implement JPEG image encoding, decoding, and transcoding.
 JPEG (pronounced "jay-peg") is a standardized compression method for
-full-color and gray-scale images.
+full-color and grayscale images.
 
 
 GENERAL USAGE
@@ -47,12 +47,13 @@ or
 This syntax works on all systems, so it is useful for scripts.
 
 The currently supported image file formats are: PPM (PBMPLUS color format),
-PGM (PBMPLUS gray-scale format), BMP, Targa, and RLE (Utah Raster Toolkit
+PGM (PBMPLUS grayscale format), BMP, Targa, and RLE (Utah Raster Toolkit
-format).  (RLE is supported only if the URT library is available.)
+format).  (RLE is supported only if the URT library is available, which it
-cjpeg recognizes the input image format automatically, with the exception
+isn't on most non-Unix systems.)  cjpeg recognizes the input image format
-of some Targa-format files.  You have to tell djpeg which format to generate.
+automatically, with the exception of some Targa-format files.  You have to
+tell djpeg which format to generate.
 
-JPEG files are in the defacto standard JFIF file format.  There are other,
+JPEG files are in the standard JFIF file format.  There are other,
 less widely used JPEG-based file formats, but we don't support them.
 
 All switch names may be abbreviated; for example, -grayscale may be written
@@ -292,10 +293,14 @@ The basic command line switches for djpeg are:
 			highest quality output.)  Currently, this is equivalent
 			to "-dct fast -nosmooth -onepass -dither ordered".
 
-	-grayscale	Force gray-scale output even if JPEG file is color.
+	-grayscale	Force grayscale output even if JPEG file is color.
 			Useful for viewing on monochrome displays; also,
 			djpeg runs noticeably faster in this mode.
 
+	-rgb		Force RGB output even if JPEG file is grayscale.
+			This is provided to support applications that don't
+			want to cope with grayscale as a separate case.
+
 	-scale M/N	Scale the output image by a factor M/N.  Currently
 			supported scale factors are M/N with all M from 1 to
 			16, where N is the source DCT size, which is 8 for
@@ -309,7 +314,7 @@ The basic command line switches for djpeg are:
 
 	-bmp		Select BMP output format (Windows flavor).  8-bit
 			colormapped format is emitted if -colors or -grayscale
-			is specified, or if the JPEG file is gray-scale;
+			is specified, or if the JPEG file is grayscale;
 			otherwise, 24-bit full-color format is emitted.
 
 	-gif		Select GIF output format.  Since GIF does not support
@@ -319,18 +324,18 @@ The basic command line switches for djpeg are:
 
 	-os2		Select BMP output format (OS/2 1.x flavor).  8-bit
 			colormapped format is emitted if -colors or -grayscale
-			is specified, or if the JPEG file is gray-scale;
+			is specified, or if the JPEG file is grayscale;
 			otherwise, 24-bit full-color format is emitted.
 
 	-pnm		Select PBMPLUS (PPM/PGM) output format (this is the
 			default format).  PGM is emitted if the JPEG file is
-			gray-scale or if -grayscale is specified; otherwise
+			grayscale or if -grayscale is specified; otherwise
 			PPM is emitted.
 
 	-rle		Select RLE output format.  (Requires URT library.)
 
-	-targa		Select Targa output format.  Gray-scale format is
+	-targa		Select Targa output format.  Grayscale format is
-			emitted if the JPEG file is gray-scale or if
+			emitted if the JPEG file is grayscale or if
 			-grayscale is specified; otherwise, colormapped format
 			is emitted if -colors is specified; otherwise, 24-bit
 			full-color format is emitted.
@@ -372,7 +377,7 @@ Switches for advanced users:
 			The one-pass method is faster and needs less memory,
 			but it produces a lower-quality image.  -onepass is
 			ignored unless you also say -colors N.  Also,
-			the one-pass method is always used for gray-scale
+			the one-pass method is always used for grayscale
 			output (the two-pass method is no improvement then).
 
 	-maxmemory N	Set limit for amount of memory to use in processing
@@ -479,14 +484,16 @@ jpegtran performs various useful transformations of JPEG files.
 It can translate the coded representation from one variant of JPEG to another,
 for example from baseline JPEG to progressive JPEG or vice versa.  It can also
 perform some rearrangements of the image data, for example turning an image
-from landscape to portrait format by rotation.
+from landscape to portrait format by rotation.  For EXIF files and JPEG files
+containing Exif data, you may prefer to use exiftran instead.
 
 jpegtran works by rearranging the compressed data (DCT coefficients), without
 ever fully decoding the image.  Therefore, its transformations are lossless:
 there is no image degradation at all, which would not be true if you used
 djpeg followed by cjpeg to accomplish the same conversion.  But by the same
 token, jpegtran cannot perform lossy operations such as changing the image
-quality.
+quality.  However, while the image data is losslessly transformed, metadata
+can be removed.  See the -copy option for specifics.
 
 jpegtran uses a command line syntax similar to cjpeg or djpeg.
 On Unix-like systems, you say:
@@ -557,7 +564,8 @@ this does not hold for the given crop parameters, we silently move the upper
 left corner up and/or left to make it so, simultaneously increasing the
 region dimensions to keep the lower right crop corner unchanged.  (Thus, the
 output image covers at least the requested region, but may cover more.)
-The adjustment of the region dimensions may be optionally disabled.
+The adjustment of the region dimensions may be optionally disabled by
+attaching an 'f' character ("force") to the width or height number.
 
 The image can be losslessly cropped by giving the switch:
 	-crop WxH+X+Y	Crop to a rectangular subarea of width W, height H
@@ -592,16 +600,18 @@ extended JPEG file at all.
 
 jpegtran also recognizes these switches that control what to do with "extra"
 markers, such as comment blocks:
-	-copy none	Copy no extra markers from source file.  This setting
+	-copy none	Copy no extra markers from source file.
-			suppresses all comments and other excess baggage
+			This setting suppresses all comments
-			present in the source file.
+			and other metadata in the source file.
-	-copy comments	Copy only comment markers.  This setting copies
+	-copy comments	Copy only comment markers.
-			comments from the source file, but discards
+			This setting copies comments from the source file,
-			any other inessential (for image display) data.
+			but discards any other metadata.
 	-copy all	Copy all extra markers.  This setting preserves
-			miscellaneous markers found in the source file, such
+			metadata found in the source file, such as JFIF
-			as JFIF thumbnails, Exif data, and Photoshop settings.
+			thumbnails, Exif data, and Photoshop settings.
 			In some files these extra markers can be sizable.
+			Note that this option will copy thumbnails as-is;
+			they will not be transformed.
 The default behavior is -copy comments.  (Note: in IJG releases v6 and v6a,
 jpegtran always did the equivalent of -copy none.)
 

wrgif.c

@@ -2,6 +2,7 @@
  * wrgif.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
+ * Modified 2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -218,7 +219,7 @@ put_3bytes (gif_dest_ptr dinfo, int val)
 LOCAL(void)
 emit_header (gif_dest_ptr dinfo, int num_colors, JSAMPARRAY colormap)
 /* Output the GIF file header, including color map */
-/* If colormap==NULL, synthesize a gray-scale colormap */
+/* If colormap==NULL, synthesize a grayscale colormap */
 {
   int BitsPerPixel, ColorMapSize, InitCodeSize, FlagByte;
   int cshift = dinfo->cinfo->data_precision - 8;
@@ -270,7 +271,7 @@ emit_header (gif_dest_ptr dinfo, int num_colors, JSAMPARRAY colormap)
 	  put_3bytes(dinfo, GETJSAMPLE(colormap[0][i]) >> cshift);
 	}
       } else {
-	/* Create a gray-scale map of num_colors values, range 0..255 */
+	/* Create a grayscale map of num_colors values, range 0..255 */
 	put_3bytes(dinfo, (i * 255 + (num_colors-1)/2) / (num_colors-1));
       }
     } else {
@@ -393,7 +394,7 @@ jinit_write_gif (j_decompress_ptr cinfo)
     ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->output_width, (JDIMENSION) 1);
   dest->pub.buffer_height = 1;
 
-  return (djpeg_dest_ptr) dest;
+  return &dest->pub;
 }
 
 #endif /* GIF_SUPPORTED */

wrjpgcom.c

@@ -2,6 +2,7 @@
  * wrjpgcom.c
  *
  * Copyright (C) 1994-1997, Thomas G. Lane.
+ * Modified 2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -453,6 +454,11 @@ main (int argc, char **argv)
 	comment_arg = (char *) malloc((size_t) MAX_COM_LENGTH);
 	if (comment_arg == NULL)
 	  ERREXIT("Insufficient memory");
+	if (strlen(argv[argn]+1) >= (size_t) MAX_COM_LENGTH) {
+	  fprintf(stderr, "Comment text may not exceed %u bytes\n",
+		  (unsigned int) MAX_COM_LENGTH);
+	  exit(EXIT_FAILURE);
+	}
 	strcpy(comment_arg, argv[argn]+1);
 	for (;;) {
 	  comment_length = (unsigned int) strlen(comment_arg);
@@ -462,9 +468,19 @@ main (int argc, char **argv)
 	  }
 	  if (++argn >= argc)
 	    ERREXIT("Missing ending quote mark");
+	  if (strlen(comment_arg) + 1 + strlen(argv[argn]) >=
+	      (size_t) MAX_COM_LENGTH) {
+	    fprintf(stderr, "Comment text may not exceed %u bytes\n",
+		    (unsigned int) MAX_COM_LENGTH);
+	    exit(EXIT_FAILURE);
+	  }
 	  strcat(comment_arg, " ");
 	  strcat(comment_arg, argv[argn]);
 	}
+      } else if (strlen(comment_arg) >= (size_t) MAX_COM_LENGTH) {
+	fprintf(stderr, "Comment text may not exceed %u bytes\n",
+		(unsigned int) MAX_COM_LENGTH);
+	exit(EXIT_FAILURE);
       }
       comment_length = (unsigned int) strlen(comment_arg);
     } else

wrtarga.c

@@ -2,6 +2,7 @@
  * wrtarga.c
  *
  * Copyright (C) 1991-1996, Thomas G. Lane.
+ * Modified 2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -73,7 +74,7 @@ write_header (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, int num_colors)
   targaheader[17] = 0x20;	/* Top-down, non-interlaced */
 
   if (cinfo->out_color_space == JCS_GRAYSCALE) {
-    targaheader[2] = 3;		/* image type = uncompressed gray-scale */
+    targaheader[2] = 3;		/* image type = uncompressed grayscale */
     targaheader[16] = 8;	/* bits per pixel */
   } else {			/* must be RGB */
     if (num_colors > 0) {
@@ -247,7 +248,7 @@ jinit_write_targa (j_decompress_ptr cinfo)
     ((j_common_ptr) cinfo, JPOOL_IMAGE, dest->buffer_width, (JDIMENSION) 1);
   dest->pub.buffer_height = 1;
 
-  return (djpeg_dest_ptr) dest;
+  return &dest->pub;
 }
 
 #endif /* TARGA_SUPPORTED */