diff options
55 files changed, 183 insertions, 135 deletions
@@ -1,5 +1,5 @@ -Libpng 1.2.7beta2 - August 29, 2004 +Libpng 1.2.7rc1 - September 4, 2004 This is not intended to be a public release. It will be replaced within a few weeks by a public version or by another test version. @@ -14,11 +14,13 @@ version 1.2.7beta1 [August 26, 2004] PNG Spec (second edition) and the PNG ISO/IEC Standard. Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR. Fixed bug with "optimized window size" in the IDAT datastream. -version 1.2.7beta1 [August 29, 2004] +version 1.2.7beta1 [August 28, 2004] Fixed bug with sCAL chunk and big-endian machines (David Munro). Undid new code added in 1.2.6rc2 to update the color_type in png_set_filler(). Added png_set_add_alpha() that updates color type. +version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004] + Revised png_set_strip_filler() to not remove alpha if color_type has alpha. Send comments/corrections/commendations to png-implement@ccrc.wustl.edu (subscription required; write to @@ -1353,11 +1353,13 @@ version 1.2.7beta1 [August 26, 2004] PNG Spec (second edition) and the PNG ISO/IEC Standard. Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR. Fixed bug with "optimized window size" in the IDAT datastream. -version 1.2.7beta2 [August 29, 2004] +version 1.2.7beta2 [August 28, 2004] Fixed bug with sCAL chunk and big-endian machines (David Munro). Undid new code added in 1.2.6rc2 to update the color_type in png_set_filler(). Added png_set_add_alpha() that updates color type. +version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004] + Revised png_set_strip_filler() to not remove alpha if color_type has alpha. Send comments/corrections/commendations to png-implement@ccrc.wustl.edu (subscription required; write to @@ -1,5 +1,5 @@ -Installing libpng version 1.2.7beta2 - August 29, 2004 +Installing libpng version 1.2.7rc1 - September 4, 2004 Before installing libpng, you must first install zlib. zlib can usually be found wherever you got libpng. zlib can be @@ -10,7 +10,7 @@ zlib.h and zconf.h include files that correspond to the version of zlib that's installed. You can rename the directories that you downloaded (they -might be called "libpng-1.2.7beta2" or "lpng109" and "zlib-1.2.1" +might be called "libpng-1.2.7rc1" or "lpng109" and "zlib-1.2.1" or "zlib121") so that you have directories called "zlib" and "libpng". Your directory structure should look like this: @@ -67,9 +67,9 @@ include makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.linux => Linux/ELF makefile - (gcc, creates libpng12.so.0.1.2.7beta2) + (gcc, creates libpng12.so.0.1.2.7rc1) makefile.gcmmx => Linux/ELF makefile - (gcc, creates libpng12.so.0.1.2.7beta2, + (gcc, creates libpng12.so.0.1.2.7rc1, uses assembler code tuned for Intel MMX platform) makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.knr => Archaic UNIX Makefile that converts files with @@ -91,12 +91,12 @@ include makefile.openbsd => OpenBSD makefile makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib) makefile.sggcc => Silicon Graphics (gcc, - creates libpng12.so.0.1.2.7beta2) + creates libpng12.so.0.1.2.7rc1) makefile.sunos => Sun makefile makefile.solaris => Solaris 2.X makefile (gcc, - creates libpng12.so.0.1.2.7beta2) + creates libpng12.so.0.1.2.7rc1) makefile.so9 => Solaris 9 makefile (gcc, - creates libpng12.so.0.1.2.7beta2) + creates libpng12.so.0.1.2.7rc1) makefile.32sunu => Sun Ultra 32-bit makefile makefile.64sunu => Sun Ultra 64-bit makefile makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc @@ -1,5 +1,5 @@ -Known bugs in libpng version 1.2.7beta2 +Known bugs in libpng version 1.2.7rc1 1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when reading interlaced PNG files, when assembler code is enabled but running @@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: If you modify libpng you may insert additional notices immediately following this sentence. -libpng version 1.2.6, August 29, 2004, is +libpng version 1.2.6, September 4, 2004, is Copyright (c) 2004 Glenn Randers-Pehrson, and is distributed according to the same disclaimer and license as libpng-1.2.5 with the following individual added to the list of Contributing Authors @@ -106,4 +106,4 @@ certification mark of the Open Source Initiative. Glenn Randers-Pehrson glennrp@users.sourceforge.net -August 29, 2004 +September 4, 2004 @@ -1,4 +1,4 @@ -README for libpng version 1.2.7beta2 - August 29, 2004 (shared library 12.0) +README for libpng version 1.2.7rc1 - September 4, 2004 (shared library 12.0) See the note about version numbers near the top of png.h See INSTALL for instructions on how to install libpng. @@ -187,9 +187,9 @@ Files in this distribution: descrip.mms => VMS makefile for MMS or MMK makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.linux => Linux/ELF makefile - (gcc, creates libpng12.so.0.1.2.7beta2) + (gcc, creates libpng12.so.0.1.2.7rc1) makefile.gcmmx => Linux/ELF makefile - (gcc, creates libpng12.so.0.1.2.7beta2, + (gcc, creates libpng12.so.0.1.2.7rc1, uses assembler code tuned for Intel MMX platform) makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.knr => Archaic UNIX Makefile that converts files with @@ -210,12 +210,12 @@ Files in this distribution: makefile.openbsd => OpenBSD makefile makefile.sgi => Silicon Graphics IRIX (cc, creates static lib) makefile.sggcc => Silicon Graphics - (gcc, creates libpng12.so.0.1.2.7beta2) + (gcc, creates libpng12.so.0.1.2.7rc1) makefile.sunos => Sun makefile makefile.solaris => Solaris 2.X makefile - (gcc, creates libpng12.so.0.1.2.7beta2) + (gcc, creates libpng12.so.0.1.2.7rc1) makefile.so9 => Solaris 9 makefile - (gcc, creates libpng12.so.0.1.2.7beta2) + (gcc, creates libpng12.so.0.1.2.7rc1) makefile.32sunu => Sun Ultra 32-bit makefile makefile.64sunu => Sun Ultra 64-bit makefile makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc @@ -1,13 +1,13 @@ Y2K compliance in libpng: ========================= - August 29, 2004 + September 4, 2004 Since the PNG Development group is an ad-hoc body, we can't make an official declaration. This is your unofficial assurance that libpng from version 0.71 and - upward through 1.2.7beta2 are Y2K compliant. It is my belief that earlier + upward through 1.2.7rc1 are Y2K compliant. It is my belief that earlier versions were also Y2K compliant. Libpng only has three year fields. One is a 2-byte unsigned integer @@ -1,13 +1,13 @@ #!/bin/sh echo " There is no \"configure\" script in this distribution of - libpng-1.2.7beta2. + libpng-1.2.7rc1. Instead, please copy the appropriate makefile for your system from the \"scripts\" directory. Read the INSTALL file for more details. Update, July 2004: you can get a "configure" based distribution from the libpng distribution sites. Download the file - libpng-1.2.7beta2-config.tar.gz + libpng-1.2.7rc1-config.tar.gz " @@ -1,6 +1,6 @@ -.TH LIBPNG 3 "August 29, 2004" +.TH LIBPNG 3 "September 4, 2004" .SH NAME -libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7beta2 +libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7rc1 .SH SYNOPSIS \fI\fB @@ -781,7 +781,7 @@ Following is a copy of the libpng.txt file that accompanies libpng. .SH LIBPNG.TXT libpng.txt - A description on how to use and modify libpng - libpng version 1.2.7beta2 - August 29, 2004 + libpng version 1.2.7rc1 - September 4, 2004 Updated and distributed by Glenn Randers-Pehrson <glennrp@users.sourceforge.net> Copyright (c) 1998-2004 Glenn Randers-Pehrson @@ -1548,14 +1548,14 @@ unless the library has been told to transform it into another format. For example, 4 bit/pixel paletted or grayscale data will be returned 2 pixels/byte with the leftmost pixel in the high-order bits of the byte, unless png_set_packing() is called. 8-bit RGB data will be stored -in RGB RGB RGB format unless png_set_filler() is called to insert filler -bytes, either before or after each RGB triplet. 16-bit RGB data will -be returned RRGGBB RRGGBB, with the most significant byte of the color -value first, unless png_set_strip_16() is called to transform it to -regular RGB RGB triplets, or png_set_filler() is called to insert -filler bytes, either before or after each RRGGBB triplet. Similarly, -8-bit or 16-bit grayscale data can be modified with png_set_filler() -or png_set_strip_16(). +in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha() +is called to insert filler bytes, either before or after each RGB triplet. +16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant +byte of the color value first, unless png_set_strip_16() is called to +transform it to regular RGB RGB triplets, or png_set_filler|add alpha() +is called to insert filler bytes, either before or after each RRGGBB +triplet. Similarly, 8-bit or 16-bit grayscale data can be modified with +png_set_filler(), png_set_add_alpha(), or png_set_strip_16(). The following code transforms grayscale images of less than 8 to 8 bits, changes paletted images to RGB, and adds a full alpha channel if there is @@ -1640,6 +1640,16 @@ does not affect images that already have full alpha channels. To add an opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which will generate RGBA pixels. +Note that png_set_filler() does not change the color type. If you want +to do that, you can add a true alpha channel with + + if (color_type == PNG_COLOR_TYPE_RGB || + color_type == PNG_COLOR_TYPE_GRAY) + png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER); + +where "filler" contains the alpha value to assign to each pixel. +This function became available in libpng-1.2.7. + If you are reading an image with an alpha channel, and you need the data as ARGB instead of the normal PNG format RGBA: @@ -3674,13 +3684,13 @@ application: .SH IX. Y2K Compliance in libpng -August 29, 2004 +September 4, 2004 Since the PNG Development group is an ad-hoc body, we can't make an official declaration. This is your unofficial assurance that libpng from version 0.71 and -upward through 1.2.7beta2 are Y2K compliant. It is my belief that earlier +upward through 1.2.7rc1 are Y2K compliant. It is my belief that earlier versions were also Y2K compliant. Libpng only has three year fields. One is a 2-byte unsigned integer that @@ -3824,6 +3834,8 @@ the first widely used release: 1.0.16 10 10016 10.so.0.1.0.16 1.2.6 13 10206 12.so.0.1.2.6 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2 + 1.0.17rc1 10 10017 12.so.0.1.0.17rc1 + 1.2.7rc1 13 10207 12.so.0.1.2.7rc1 Henceforth the source version will match the shared-library minor and patch numbers; the shared-library major version number will be @@ -3879,7 +3891,7 @@ possible without all of you. Thanks to Frank J. T. Wojcik for helping with the documentation. -Libpng version 1.2.7beta2 - August 29, 2004: +Libpng version 1.2.7rc1 - September 4, 2004: Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc. Currently maintained by Glenn Randers-Pehrson (glennrp@users.sourceforge.net). @@ -3897,7 +3909,7 @@ included in the libpng distribution, the latter shall prevail.) If you modify libpng you may insert additional notices immediately following this sentence. -libpng version 1.2.6, August 29, 2004, is +libpng version 1.2.6, September 4, 2004, is Copyright (c) 2004 Glenn Randers-Pehrson, and is distributed according to the same disclaimer and license as libpng-1.2.5 with the following individual added to the list of Contributing Authors @@ -3996,7 +4008,7 @@ certification mark of the Open Source Initiative. Glenn Randers-Pehrson glennrp@users.sourceforge.net -August 29, 2004 +September 4, 2004 .\" end of man page diff --git a/libpng.txt b/libpng.txt index 7f01daa7f..cbc121334 100644 --- a/libpng.txt +++ b/libpng.txt @@ -1,6 +1,6 @@ libpng.txt - A description on how to use and modify libpng - libpng version 1.2.7beta2 - August 29, 2004 + libpng version 1.2.7rc1 - September 4, 2004 Updated and distributed by Glenn Randers-Pehrson <glennrp@users.sourceforge.net> Copyright (c) 1998-2004 Glenn Randers-Pehrson @@ -767,14 +767,14 @@ unless the library has been told to transform it into another format. For example, 4 bit/pixel paletted or grayscale data will be returned 2 pixels/byte with the leftmost pixel in the high-order bits of the byte, unless png_set_packing() is called. 8-bit RGB data will be stored -in RGB RGB RGB format unless png_set_filler() is called to insert filler -bytes, either before or after each RGB triplet. 16-bit RGB data will -be returned RRGGBB RRGGBB, with the most significant byte of the color -value first, unless png_set_strip_16() is called to transform it to -regular RGB RGB triplets, or png_set_filler() is called to insert -filler bytes, either before or after each RRGGBB triplet. Similarly, -8-bit or 16-bit grayscale data can be modified with png_set_filler() -or png_set_strip_16(). +in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha() +is called to insert filler bytes, either before or after each RGB triplet. +16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant +byte of the color value first, unless png_set_strip_16() is called to +transform it to regular RGB RGB triplets, or png_set_filler|add alpha() +is called to insert filler bytes, either before or after each RRGGBB +triplet. Similarly, 8-bit or 16-bit grayscale data can be modified with +png_set_filler(), png_set_add_alpha(), or png_set_strip_16(). The following code transforms grayscale images of less than 8 to 8 bits, changes paletted images to RGB, and adds a full alpha channel if there is @@ -859,6 +859,16 @@ does not affect images that already have full alpha channels. To add an opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which will generate RGBA pixels. +Note that png_set_filler() does not change the color type. If you want +to do that, you can add a true alpha channel with + + if (color_type == PNG_COLOR_TYPE_RGB || + color_type == PNG_COLOR_TYPE_GRAY) + png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER); + +where "filler" contains the alpha value to assign to each pixel. +This function became available in libpng-1.2.7. + If you are reading an image with an alpha channel, and you need the data as ARGB instead of the normal PNG format RGBA: @@ -2893,13 +2903,13 @@ application: IX. Y2K Compliance in libpng -August 29, 2004 +September 4, 2004 Since the PNG Development group is an ad-hoc body, we can't make an official declaration. This is your unofficial assurance that libpng from version 0.71 and -upward through 1.2.7beta2 are Y2K compliant. It is my belief that earlier +upward through 1.2.7rc1 are Y2K compliant. It is my belief that earlier versions were also Y2K compliant. Libpng only has three year fields. One is a 2-byte unsigned integer that diff --git a/libpngpf.3 b/libpngpf.3 index c7cd4b951..73bb59488 100644 --- a/libpngpf.3 +++ b/libpngpf.3 @@ -1,6 +1,6 @@ -.TH LIBPNGPF 3 "August 29, 2004" +.TH LIBPNGPF 3 "September 4, 2004" .SH NAME -libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7beta2 +libpng \- Portable Network Graphics (PNG) Reference Library 1.2.7rc1 (private functions) .SH SYNOPSIS \fB\fB#include <png.h>\fP\fP @@ -1,4 +1,4 @@ -.TH PNG 5 "August 29, 2004" +.TH PNG 5 "September 4, 2004" .SH NAME png \- Portable Network Graphics (PNG) format .SH DESCRIPTION @@ -1,7 +1,7 @@ /* png.c - location for general purpose libpng functions * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) @@ -13,7 +13,7 @@ #include "png.h" /* Generate a compiler error if there is an old png.h in the search path. */ -typedef version_1_2_7beta2 Your_png_h_is_not_version_1_2_7beta2; +typedef version_1_2_7rc1 Your_png_h_is_not_version_1_2_7rc1; /* Version information for C files. This had better match the version * string defined in png.h. */ @@ -678,7 +678,7 @@ png_charp PNGAPI png_get_copyright(png_structp png_ptr) { if (&png_ptr != NULL) /* silence compiler warning about unused png_ptr */ - return ((png_charp) "\n libpng version 1.2.7beta2 - August 29, 2004\n\ + return ((png_charp) "\n libpng version 1.2.7rc1 - September 4, 2004\n\ Copyright (c) 1998-2004 Glenn Randers-Pehrson\n\ Copyright (c) 1996-1997 Andreas Dilger\n\ Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n"); @@ -1,6 +1,6 @@ /* png.h - header file for PNG reference library * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) @@ -8,7 +8,7 @@ * Authors and maintainers: * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger - * libpng versions 0.97, January 1998, through 1.2.7beta2 - August 29, 2004: Glenn + * libpng versions 0.97, January 1998, through 1.2.7rc1 - September 4, 2004: Glenn * See also "Contributing Authors", below. * * Note about libpng version numbers: @@ -102,6 +102,8 @@ * 1.0.16 10 10016 10.so.0.1.0.16 * 1.2.6 13 10206 12.so.0.1.2.6 * 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2 + * 1.0.17rc1 10 10017 12.so.0.1.0.17rc1 + * 1.2.7rc1 13 10207 12.so.0.1.2.7rc1 * * Henceforth the source version will match the shared-library major * and minor numbers; the shared-library major version number will be @@ -131,7 +133,7 @@ * If you modify libpng you may insert additional notices immediately following * this sentence. * - * libpng versions 1.2.6, August 15, 2004, through 1.2.7beta2, August 29, 2004, are + * libpng versions 1.2.6, August 15, 2004, through 1.2.7rc1, September 4, 2004, are * Copyright (c) 2004 Glenn Randers-Pehrson, and are * distributed according to the same disclaimer and license as libpng-1.2.5 * with the following individual added to the list of Contributing Authors: @@ -243,13 +245,13 @@ * Y2K compliance in libpng: * ========================= * - * August 29, 2004 + * September 4, 2004 * * Since the PNG Development group is an ad-hoc body, we can't make * an official declaration. * * This is your unofficial assurance that libpng from version 0.71 and - * upward through 1.2.7beta2 are Y2K compliant. It is my belief that earlier + * upward through 1.2.7rc1 are Y2K compliant. It is my belief that earlier * versions were also Y2K compliant. * * Libpng only has three year fields. One is a 2-byte unsigned integer @@ -305,9 +307,9 @@ */ /* Version information for png.h - this should match the version in png.c */ -#define PNG_LIBPNG_VER_STRING "1.2.7beta2" +#define PNG_LIBPNG_VER_STRING "1.2.7rc1" #define PNG_HEADER_VERSION_STRING \ - " libpng version 1.2.7beta2 - August 29, 2004 (header)\n" + " libpng version 1.2.7rc1 - September 4, 2004 (header)\n" #define PNG_LIBPNG_VER_SONUM 0 #define PNG_LIBPNG_VER_DLLNUM %DLLNUM% @@ -319,7 +321,7 @@ /* This should match the numeric part of the final component of * PNG_LIBPNG_VER_STRING, omitting any leading zero: */ -#define PNG_LIBPNG_VER_BUILD 2 +#define PNG_LIBPNG_VER_BUILD 1 #define PNG_LIBPNG_BUILD_ALPHA 1 #define PNG_LIBPNG_BUILD_BETA 2 @@ -327,7 +329,7 @@ #define PNG_LIBPNG_BUILD_STABLE 4 #define PNG_LIBPNG_BUILD_TYPEMASK 7 #define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with STABLE only */ -#define PNG_LIBPNG_BUILD_TYPE 2 +#define PNG_LIBPNG_BUILD_TYPE 3 /* Careful here. At one time, Guy wanted to use 082, but that would be octal. * We must not include leading zeros. @@ -1311,7 +1313,7 @@ struct png_struct_def /* This triggers a compiler error in png.c, if png.c and png.h * do not agree upon the version number. */ -typedef png_structp version_1_2_7beta2; +typedef png_structp version_1_2_7rc1; typedef png_struct FAR * FAR * png_structpp; @@ -1,7 +1,7 @@ /* pngconf.h - machine configurable file for libpng * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) diff --git a/pngerror.c b/pngerror.c index 0c0ee6e78..c2ce1ea50 100644 --- a/pngerror.c +++ b/pngerror.c @@ -1,7 +1,7 @@ /* pngerror.c - stub functions for i/o and memory allocation * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) diff --git a/pnggccrd.c b/pnggccrd.c index 24a7e3d4d..4ca5fd2c1 100644 --- a/pnggccrd.c +++ b/pnggccrd.c @@ -6,7 +6,7 @@ * and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm * for Intel's performance analysis of the MMX vs. non-MMX code. * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998, Intel Corporation @@ -1,7 +1,7 @@ /* pngget.c - retrieval of values from info struct * - * libpng 1.2.7beta2 - August 29, 2004 + * libpng 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) @@ -1,7 +1,7 @@ /* pngmem.c - stub functions for memory allocation * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) diff --git a/pngpread.c b/pngpread.c index 3c7730a6d..34ac68878 100644 --- a/pngpread.c +++ b/pngpread.c @@ -1,7 +1,7 @@ /* pngpread.c - read a png file in push mode * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) @@ -1,7 +1,7 @@ /* pngread.c - read a PNG file * - * libpng 1.2.7beta2 - August 29, 2004 + * libpng 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) @@ -803,7 +803,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) * not called png_set_interlace_handling(), the display_row buffer will * be ignored, so pass NULL to it. * - * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.7beta2 + * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.7rc1 */ void PNGAPI @@ -853,7 +853,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row, * only call this function once. If you desire to have an image for * each pass of a interlaced image, use png_read_rows() instead. * - * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.7beta2 + * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.7rc1 */ void PNGAPI png_read_image(png_structp png_ptr, png_bytepp image) @@ -1,7 +1,7 @@ /* pngrio.c - functions for data input * - * libpng 1.2.7beta2 - August 29, 2004 + * libpng 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) diff --git a/pngrtran.c b/pngrtran.c index f13b540a9..5fccd4d38 100644 --- a/pngrtran.c +++ b/pngrtran.c @@ -1,7 +1,7 @@ /* pngrtran.c - transforms the data in a row for PNG readers * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) diff --git a/pngrutil.c b/pngrutil.c index 7ca5e7276..dbeb03161 100644 --- a/pngrutil.c +++ b/pngrutil.c @@ -1,6 +1,6 @@ /* pngrutil.c - utilities to read a PNG file * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) @@ -1,7 +1,7 @@ /* pngset.c - storage of image information into info struct * - * libpng 1.2.7beta2 - August 29, 2004 + * libpng 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) @@ -1,7 +1,7 @@ /* pngtest.c - a simple test program to test libpng * - * libpng 1.2.7beta2 - August 29, 2004 + * libpng 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) @@ -1551,4 +1551,4 @@ main(int argc, char *argv[]) } /* Generate a compiler error if there is an old png.h in the search path. */ -typedef version_1_2_7beta2 your_png_h_is_not_version_1_2_7beta2; +typedef version_1_2_7rc1 your_png_h_is_not_version_1_2_7rc1; diff --git a/pngtrans.c b/pngtrans.c index 4256ae61b..14d7f9dd8 100644 --- a/pngtrans.c +++ b/pngtrans.c @@ -1,7 +1,7 @@ /* pngtrans.c - transforms the data in a row (used by both readers and writers) * - * libpng 1.2.7beta2 - August 29, 2004 + * libpng 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) @@ -100,7 +100,7 @@ png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc) else png_ptr->flags &= ~PNG_FLAG_FILLER_AFTER; - /* This should probably go in the "do_filler" routine. + /* This should probably go in the "do_read_filler" routine. * I attempted to do that in libpng-1.0.1a but that caused problems * so I restored it in libpng-1.0.2a */ @@ -387,16 +387,13 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags) if (row != NULL && row_info != NULL) #endif { -/* - if (row_info->color_type == PNG_COLOR_TYPE_RGB || - row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) -*/ png_bytep sp=row; png_bytep dp=row; png_uint_32 row_width=row_info->width; png_uint_32 i; - if (row_info->channels == 4) + if (row_info->color_type == PNG_COLOR_TYPE_RGB && + row_info->channels == 4) { if (row_info->bit_depth == 8) { @@ -473,13 +470,9 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags) row_info->rowbytes = row_width * 6; } row_info->channels = 3; - row_info->color_type &= ~PNG_COLOR_MASK_ALPHA; } -/* - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY || - row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) -*/ - else if (row_info->channels == 2) + else if (row_info->color_type == PNG_COLOR_TYPE_GRAY && + row_info->channels == 2) { if (row_info->bit_depth == 8) { @@ -531,7 +524,6 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags) row_info->rowbytes = row_width * 2; } row_info->channels = 1; - row_info->color_type &= ~PNG_COLOR_MASK_ALPHA; } } } @@ -2,7 +2,7 @@ * * For Intel x86 CPU and Microsoft Visual C++ compiler * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998, Intel Corporation @@ -1,7 +1,7 @@ /* pngwio.c - functions for data output * - * libpng 1.2.7beta2 - August 29, 2004 + * libpng 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) diff --git a/pngwrite.c b/pngwrite.c index fc6f12340..f606eed93 100644 --- a/pngwrite.c +++ b/pngwrite.c @@ -1,7 +1,7 @@ /* pngwrite.c - general routines to write a PNG file * - * libpng 1.2.7beta2 - August 29, 2004 + * libpng 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) diff --git a/pngwtran.c b/pngwtran.c index 91218efae..e17baf2e1 100644 --- a/pngwtran.c +++ b/pngwtran.c @@ -1,7 +1,7 @@ /* pngwtran.c - transforms the data in a row for PNG writers * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) diff --git a/pngwutil.c b/pngwutil.c index c2f371dfc..bf183b259 100644 --- a/pngwutil.c +++ b/pngwutil.c @@ -1,7 +1,7 @@ /* pngwutil.c - utilities to write a PNG file * - * libpng version 1.2.7beta2 - August 29, 2004 + * libpng version 1.2.7rc1 - September 4, 2004 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1998-2004 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) @@ -515,18 +515,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height, if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL)) png_ptr->zlib_mem_level = 8; if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS)) - { - if (png_ptr->rowbytes <= 16384 && png_ptr->height <= 16384) - { - png_uint_32 imagebytes = (png_ptr->rowbytes+1) * png_ptr->height; - png_uint_32 windowsize = 14; /* try for a smaller window */ - while ((1U << windowsize) >= imagebytes && windowsize > 7) - --windowsize; - png_ptr->zlib_window_bits = windowsize + 1; - } - else - png_ptr->zlib_window_bits = 15; - } + png_ptr->zlib_window_bits = 15; if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_METHOD)) png_ptr->zlib_method = 8; deflateInit2(&png_ptr->zstream, png_ptr->zlib_level, @@ -613,6 +602,45 @@ png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length) #endif png_debug(1, "in png_write_IDAT\n"); + /* Optimize the CMF field in the zlib stream. */ + /* This hack of the zlib stream is compliant to the stream specification. */ + if (!(png_ptr->mode & PNG_HAVE_IDAT) && + png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE) + { + unsigned int z_cmf = data[0]; /* zlib compression method and flags */ + if ((z_cmf & 0x0f) == 8 && (z_cmf & 0xf0) <= 0x70) + { + /* Avoid memory underflows and multiplication overflows. */ + /* The conditions below are practically always satisfied; + however, they still must be checked. */ + if (length >= 2 && + png_ptr->height < 16384 && png_ptr->width < 16384) + { + png_uint_32 uncompressed_idat_size = png_ptr->height * + ((png_ptr->width * + png_ptr->channels * png_ptr->bit_depth + 15) >> 3); + unsigned int z_cinfo = z_cmf >> 4; + unsigned int half_z_window_size = 1 << (z_cinfo + 7); + while (uncompressed_idat_size <= half_z_window_size && + half_z_window_size >= 256) + { + z_cinfo--; + half_z_window_size >>= 1; + } + z_cmf = (z_cmf & 0x0f) | (z_cinfo << 4); + if (data[0] != (png_byte)z_cmf) + { + data[0] = (png_byte)z_cmf; + data[1] &= 0xe0; + data[1] += (png_byte)(0x1f - ((z_cmf << 8) + data[1]) % 0x1f); + } + } + } + else + png_error(png_ptr, + "Invalid zlib compression method or flags in IDAT"); + } + png_write_chunk(png_ptr, (png_bytep)png_IDAT, data, length); png_ptr->mode |= PNG_HAVE_IDAT; } diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in index 72dce767b..0f434846d 100755 --- a/scripts/libpng-config-head.in +++ b/scripts/libpng-config-head.in @@ -8,7 +8,7 @@ # Modeled after libxml-config. -version=1.2.7beta2 +version=1.2.7rc1 prefix="" libdir="" libs="" diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in index 557f88819..cab96edad 100644 --- a/scripts/libpng.pc.in +++ b/scripts/libpng.pc.in @@ -6,6 +6,6 @@ includedir=${exec_prefix}/include Name: libpng12 Description: Loads and saves PNG files -Version: 1.2.7beta2 +Version: 1.2.7rc1 Libs: -L${libdir} -lpng12 -lz -lm Cflags: -I${includedir}/libpng12 diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu index b07beb656..db2583b99 100644 --- a/scripts/makefile.32sunu +++ b/scripts/makefile.32sunu @@ -33,7 +33,7 @@ RANLIB=echo LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) INCPATH=$(prefix)/include diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu index 476c4e555..6fb6a42f0 100644 --- a/scripts/makefile.64sunu +++ b/scripts/makefile.64sunu @@ -33,7 +33,7 @@ RANLIB=echo LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) INCPATH=$(prefix)/include diff --git a/scripts/makefile.aix b/scripts/makefile.aix index 3df945476..4a231ffb8 100644 --- a/scripts/makefile.aix +++ b/scripts/makefile.aix @@ -18,7 +18,7 @@ RM = rm -f LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) prefix=/usr/local diff --git a/scripts/makefile.beos b/scripts/makefile.beos index 441117744..cf8af7414 100644 --- a/scripts/makefile.beos +++ b/scripts/makefile.beos @@ -12,7 +12,7 @@ ZLIBLIB=/usr/local/lib ZLIBINC=/usr/local/include PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) ALIGN= diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin index 250e4fde1..caba01897 100644 --- a/scripts/makefile.cygwin +++ b/scripts/makefile.cygwin @@ -79,7 +79,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \ LIBNAME = libpng12 PNGMAJ = 0 CYGDLL = 12 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) SHAREDLIB=cygpng$(CYGDLL).dll diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin index 893320008..e251bf518 100644 --- a/scripts/makefile.darwin +++ b/scripts/makefile.darwin @@ -23,7 +23,7 @@ LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz RANLIB=ranlib PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) LIBNAME = libpng12 diff --git a/scripts/makefile.dec b/scripts/makefile.dec index a9b6d8e34..b4315a2d1 100644 --- a/scripts/makefile.dec +++ b/scripts/makefile.dec @@ -32,7 +32,7 @@ ZLIBLIB=../zlib ZLIBINC=../zlib PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) LIBNAME = libpng12 diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx index dd30dcbf7..d2c544bd7 100644 --- a/scripts/makefile.gcmmx +++ b/scripts/makefile.gcmmx @@ -15,7 +15,7 @@ LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) CC=gcc diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc index cd704a88b..b17d1c54e 100644 --- a/scripts/makefile.hpgcc +++ b/scripts/makefile.hpgcc @@ -41,7 +41,7 @@ RANLIB=ranlib #RANLIB=echo PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) LIBNAME = libpng12 diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux index dc339dc4c..28bc0739a 100644 --- a/scripts/makefile.hpux +++ b/scripts/makefile.hpux @@ -24,7 +24,7 @@ LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm RANLIB=ranlib PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) LIBNAME = libpng12 diff --git a/scripts/makefile.linux b/scripts/makefile.linux index 84944a9d3..970e0ef59 100644 --- a/scripts/makefile.linux +++ b/scripts/makefile.linux @@ -5,7 +5,7 @@ LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) CC=gcc diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd index 6946fcfdb..d9b1adb30 100644 --- a/scripts/makefile.ne12bsd +++ b/scripts/makefile.ne12bsd @@ -13,7 +13,7 @@ INCSDIR=${LOCALBASE}/include/libpng12 LIB= png12 SHLIB_MAJOR= 0 -SHLIB_MINOR= 1.2.7beta2 +SHLIB_MINOR= 1.2.7rc1 SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \ pngwtran.c pngmem.c pngerror.c pngpread.c diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd index a557ac7d8..35bb51a5b 100644 --- a/scripts/makefile.netbsd +++ b/scripts/makefile.netbsd @@ -13,7 +13,7 @@ INCSDIR=${LOCALBASE}/include/libpng LIB= png SHLIB_MAJOR= 3 -SHLIB_MINOR= 1.2.7beta2 +SHLIB_MINOR= 1.2.7rc1 SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \ pngwtran.c pngmem.c pngerror.c pngpread.c diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd index 010eb9a33..b634e302b 100644 --- a/scripts/makefile.openbsd +++ b/scripts/makefile.openbsd @@ -7,7 +7,7 @@ LIBDIR= ${PREFIX}/lib MANDIR= ${PREFIX}/man/cat SHLIB_MAJOR= 0 -SHLIB_MINOR= 1.2.7beta2 +SHLIB_MINOR= 1.2.7rc1 LIB= png SRCS= png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \ diff --git a/scripts/makefile.sco b/scripts/makefile.sco index bb0a55ee9..ef19163f7 100644 --- a/scripts/makefile.sco +++ b/scripts/makefile.sco @@ -24,7 +24,7 @@ LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm RANLIB=echo PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) LIBNAME = libpng12 diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc index 0778e7129..8ea95b282 100644 --- a/scripts/makefile.sggcc +++ b/scripts/makefile.sggcc @@ -18,7 +18,7 @@ ZLIBINC=../zlib LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) CC=gcc diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi index d0e73a9a7..4e7062141 100644 --- a/scripts/makefile.sgi +++ b/scripts/makefile.sgi @@ -5,7 +5,7 @@ LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) # Where make install puts libpng.a, libpng12.so, and libpng12/png.h diff --git a/scripts/makefile.so9 b/scripts/makefile.so9 index 2649eefcf..75b036699 100644 --- a/scripts/makefile.so9 +++ b/scripts/makefile.so9 @@ -34,7 +34,7 @@ LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm RANLIB=echo PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) LIBNAME = libpng12 diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris index 794db1cc3..05ce09315 100644 --- a/scripts/makefile.solaris +++ b/scripts/makefile.solaris @@ -30,7 +30,7 @@ LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm RANLIB=echo PNGMAJ = 0 -PNGMIN = 1.2.7beta2 +PNGMIN = 1.2.7rc1 PNGVER = $(PNGMAJ).$(PNGMIN) LIBNAME = libpng12 diff --git a/scripts/pngos2.def b/scripts/pngos2.def index 8590160a0..6e42788c0 100644 --- a/scripts/pngos2.def +++ b/scripts/pngos2.def @@ -2,7 +2,7 @@ ; PNG.LIB module definition file for OS/2 ;---------------------------------------- -; Version 1.2.7beta2 +; Version 1.2.7rc1 LIBRARY PNG DESCRIPTION "PNG image compression library for OS/2" diff --git a/scripts/pngw32.def b/scripts/pngw32.def index 40477f0a0..2dd3ada06 100644 --- a/scripts/pngw32.def +++ b/scripts/pngw32.def @@ -6,7 +6,7 @@ LIBRARY DESCRIPTION "PNG image compression library for Windows" EXPORTS -;Version 1.2.7beta2 +;Version 1.2.7rc1 png_build_grayscale_palette @1 png_check_sig @2 png_chunk_error @3 |