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Glenn Randers-Pehrson 2000-12-15 08:54:42 -06:00
parent f6b4f45c7e
commit 2ad31ae31f
48 changed files with 301 additions and 96 deletions
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3
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.0.9beta4 - December 1, 2000 Libpng 1.0.9beta5 - December 15, 2000
This is a public release of libpng, intended for use in production codes. This is a public release of libpng, intended for use in production codes.
@ -34,6 +34,7 @@ Changes since the last public release (1.0.8):
Added makefile.macosx and makefile.aix to scripts directory. Added makefile.macosx and makefile.aix to scripts directory.
Change png_chunk_warning to png_warning in png_check_keyword(). Change png_chunk_warning to png_warning in png_check_keyword().
Increased the first part of msg buffer from 16 to 18 in png_chunk_error(). Increased the first part of msg buffer from 16 to 18 in png_chunk_error().
Added support for filter method 64 (for PNG datastreams embedded in MNG)
Send comments/corrections/commendations to Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

2
CHANGES
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@ -855,6 +855,8 @@ version 1.0.9beta3 [November 23, 2000]
version 1.0.9beta4 [December 1, 2000] version 1.0.9beta4 [December 1, 2000]
Change png_chunk_warning to png_warning in png_check_keyword(). Change png_chunk_warning to png_warning in png_check_keyword().
Increased the first part of msg buffer from 16 to 18 in png_chunk_error(). Increased the first part of msg buffer from 16 to 18 in png_chunk_error().
version 1.0.9beta5 [December 15, 2000]
Added support for filter method 64 (for PNG datastreams embedded in MNG)
Send comments/corrections/commendations to Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

12
INSTALL
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@ -1,5 +1,5 @@
Installing libpng version 1.0.9beta4 - December 1, 2000 Installing libpng version 1.0.9beta5 - December 15, 2000
Before installing libpng, you must first install zlib. zlib Before installing libpng, you must first install zlib. zlib
can usually be found wherever you got libpng. zlib can be 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. version of zlib that's installed.
You can rename the directories that you downloaded (they You can rename the directories that you downloaded (they
might be called "libpng-1.0.9beta4" or "lpng109" and "zlib-1.1.3" might be called "libpng-1.0.9beta5" or "lpng109" and "zlib-1.1.3"
or "zlib113") so that you have directories called "zlib" and "libpng". or "zlib113") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this: Your directory structure should look like this:
@ -59,8 +59,8 @@ The files that are presently available in the scripts directory
include include
makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.9beta4) makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.9beta5)
makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.9beta4, makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.0.9beta5,
uses assembler code tuned for Intel MMX platform) uses assembler code tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with makefile.knr => Archaic UNIX Makefile that converts files with
@ -75,9 +75,9 @@ include
libpng.icc => Project file for IBM VisualAge/C++ version 4.0 or later libpng.icc => Project file for IBM VisualAge/C++ version 4.0 or later
makefile.macosx => MACOS X Makefile makefile.macosx => MACOS X Makefile
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib) makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.9beta4) makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.9beta5)
makefile.sunos => Sun makefile makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.9beta4) makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.9beta5)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile makefile.acorn => Acorn makefile

4
LICENSE
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@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following If you modify libpng you may insert additional notices immediately following
this sentence. this sentence.
libpng versions 1.0.7, July 1, 2000, through 1.0.9beta4, December 1, 2000, are libpng versions 1.0.7, July 1, 2000, through 1.0.9beta5, December 15, 2000, are
Copyright (c) 2000 Glenn Randers-Pehrson Copyright (c) 2000 Glenn Randers-Pehrson
and are distributed according to the same disclaimer and license as libpng-1.0.6 and are distributed according to the same disclaimer and license as libpng-1.0.6
with the following individuals added to the list of Contributing Authors with the following individuals added to the list of Contributing Authors
@ -99,4 +99,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson Glenn Randers-Pehrson
randeg@alum.rpi.edu randeg@alum.rpi.edu
December 1, 2000 December 15, 2000

10
README
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@ -1,4 +1,4 @@
README for libpng 1.0.9beta4 - December 1, 2000 (shared library 2.1) README for libpng 1.0.9beta5 - December 15, 2000 (shared library 2.1)
See the note about version numbers near the top of png.h See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng. See INSTALL for instructions on how to install libpng.
@ -182,9 +182,9 @@ Files in this distribution:
descrip.mms => VMS makefile for MMS or MMK descrip.mms => VMS makefile for MMS or MMK
makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.linux => Linux/ELF makefile makefile.linux => Linux/ELF makefile
(gcc, creates libpng.so.2.1.0.9beta4) (gcc, creates libpng.so.2.1.0.9beta5)
makefile.gcmmx => Linux/ELF makefile (gcc, creates makefile.gcmmx => Linux/ELF makefile (gcc, creates
libpng.so.2.1.0.9beta4, uses assembler code libpng.so.2.1.0.9beta5, uses assembler code
tuned for Intel MMX platform) tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with makefile.knr => Archaic UNIX Makefile that converts files with
@ -199,10 +199,10 @@ Files in this distribution:
libpng.icc => Project file, IBM VisualAge/C++ 4.0 or later libpng.icc => Project file, IBM VisualAge/C++ 4.0 or later
makefile.macosx => MACOS X Makefile makefile.macosx => MACOS X Makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib) makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.9beta4) makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.0.9beta5)
makefile.sunos => Sun makefile makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng.so.2.1.0.9beta4) (gcc, creates libpng.so.2.1.0.9beta5)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile makefile.acorn => Acorn makefile

4
Y2KINFO
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@ -1,13 +1,13 @@
Y2K compliance in libpng: Y2K compliance in libpng:
========================= =========================
December 1, 2000 December 15, 2000
Since the PNG Development group is an ad-hoc body, we can't make Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.0.9beta4 are Y2K compliant. It is my belief that earlier upward through 1.0.9beta5 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer Libpng only has three year fields. One is a 2-byte unsigned integer

2
configure vendored
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@ -1,5 +1,5 @@
echo " echo "
There is no \"configure\" script for Libpng-1.0.9beta4. Instead, please There is no \"configure\" script for Libpng-1.0.9beta5. Instead, please
copy the appropriate makefile for your system from the \"scripts\" copy the appropriate makefile for your system from the \"scripts\"
directory. Read the INSTALL file for more details. directory. Read the INSTALL file for more details.
" "

37
libpng.3
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@ -1,6 +1,6 @@
.TH LIBPNG 3 "December 1, 2000" .TH LIBPNG 3 "December 15, 2000"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta4 libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta5
.SH SYNOPSIS .SH SYNOPSIS
\fI\fB \fI\fB
@ -747,7 +747,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
.SH LIBPNG.TXT .SH LIBPNG.TXT
libpng.txt - A description on how to use and modify libpng libpng.txt - A description on how to use and modify libpng
libpng version 1.0.9beta4 - December 1, 2000 libpng version 1.0.9beta5 - December 15, 2000
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<randeg@alum.rpi.edu> <randeg@alum.rpi.edu>
Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
@ -3328,7 +3328,24 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
having level = 0 will be printed. There aren't any such statements in having level = 0 will be printed. There aren't any such statements in
this version of libpng, but if you insert some they will be printed. this version of libpng, but if you insert some they will be printed.
.SH VI. Changes to Libpng from version 0.88 .SH VI. MNG support
The MNG specification (available at http://www.libpng.org/pub/mng) allows
certain extensions to PNG for PNG images that are embedded in MNG datastreams.
Libpng can support some of these extensions. To enable them, use the
png_permit_mng_features() function:
feature_set = png_permit_mng_features(png_ptr, mask)
mask is a png_uint_32 containing the logical OR of the
features you want to enable. These include
PNG_FLAG_MNG_EMPTY_PLTE
PNG_FLAG_MNG_FILTER_64
PNG_ALL_MNG_FEATURES
feature_set is a png_32_uint that is the logical AND of
your mask with the set of MNG features that is
supported by the version of libpng that you are using.
.SH VII. Changes to Libpng from version 0.88
It should be noted that versions of libpng later than 0.96 are not It should be noted that versions of libpng later than 0.96 are not
distributed by the original libpng author, Guy Schalnat, nor by distributed by the original libpng author, Guy Schalnat, nor by
@ -3377,15 +3394,15 @@ application:
png_uint_32 application_vn = PNG_LIBPNG_VER; png_uint_32 application_vn = PNG_LIBPNG_VER;
.SH VII. Y2K Compliance in libpng .SH VIII. Y2K Compliance in libpng
December 1, 2000 December 15, 2000
Since the PNG Development group is an ad-hoc body, we can't make Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.0.9beta4 are Y2K compliant. It is my belief that earlier upward through 1.0.9beta5 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that Libpng only has three year fields. One is a 2-byte unsigned integer that
@ -3526,7 +3543,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation. Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.0.9beta4 - December 1, 2000: Libpng version 1.0.9beta5 - December 15, 2000:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc. Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu). Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
@ -3543,7 +3560,7 @@ included in the libpng distribution, the latter shall prevail.)
If you modify libpng you may insert additional notices immediately following If you modify libpng you may insert additional notices immediately following
this sentence. this sentence.
libpng versions 1.0.7, July 1, 2000, through 1.0.9beta4, December 1, 2000, are libpng versions 1.0.7, July 1, 2000, through 1.0.9beta5, December 15, 2000, are
Copyright (c) 2000 Glenn Randers-Pehrson, and are Copyright (c) 2000 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.0.6 distributed according to the same disclaimer and license as libpng-1.0.6
with the following individuals added to the list of Contributing Authors with the following individuals added to the list of Contributing Authors
@ -3634,7 +3651,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson Glenn Randers-Pehrson
randeg@alum.rpi.edu randeg@alum.rpi.edu
December 1, 2000 December 15, 2000
.\" end of man page .\" end of man page

27
libpng.txt
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@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng libpng.txt - A description on how to use and modify libpng
libpng version 1.0.9beta4 - December 1, 2000 libpng version 1.0.9beta5 - December 15, 2000
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<randeg@alum.rpi.edu> <randeg@alum.rpi.edu>
Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
@ -2581,7 +2581,24 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
having level = 0 will be printed. There aren't any such statements in having level = 0 will be printed. There aren't any such statements in
this version of libpng, but if you insert some they will be printed. this version of libpng, but if you insert some they will be printed.
VI. Changes to Libpng from version 0.88 VI. MNG support
The MNG specification (available at http://www.libpng.org/pub/mng) allows
certain extensions to PNG for PNG images that are embedded in MNG datastreams.
Libpng can support some of these extensions. To enable them, use the
png_permit_mng_features() function:
feature_set = png_permit_mng_features(png_ptr, mask)
mask is a png_uint_32 containing the logical OR of the
features you want to enable. These include
PNG_FLAG_MNG_EMPTY_PLTE
PNG_FLAG_MNG_FILTER_64
PNG_ALL_MNG_FEATURES
feature_set is a png_32_uint that is the logical AND of
your mask with the set of MNG features that is
supported by the version of libpng that you are using.
VII. Changes to Libpng from version 0.88
It should be noted that versions of libpng later than 0.96 are not It should be noted that versions of libpng later than 0.96 are not
distributed by the original libpng author, Guy Schalnat, nor by distributed by the original libpng author, Guy Schalnat, nor by
@ -2630,15 +2647,15 @@ application:
png_uint_32 application_vn = PNG_LIBPNG_VER; png_uint_32 application_vn = PNG_LIBPNG_VER;
VII. Y2K Compliance in libpng VIII. Y2K Compliance in libpng
December 1, 2000 December 15, 2000
Since the PNG Development group is an ad-hoc body, we can't make Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.0.9beta4 are Y2K compliant. It is my belief that earlier upward through 1.0.9beta5 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that Libpng only has three year fields. One is a 2-byte unsigned integer that

4
libpngpf.3
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@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "December 1, 2000" .TH LIBPNGPF 3 "December 15, 2000"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta4 libpng \- Portable Network Graphics (PNG) Reference Library 1.0.9beta5
(private functions) (private functions)
.SH SYNOPSIS .SH SYNOPSIS
\fB#include <png.h>\fP \fB#include <png.h>\fP

2
png.5
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@ -1,4 +1,4 @@
.TH PNG 5 "December 1, 2000" .TH PNG 5 "December 15, 2000"
.SH NAME .SH NAME
png \- Portable Network Graphics (PNG) format png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION .SH DESCRIPTION

12
png.c
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions /* png.c - location for general purpose libpng functions
* *
* libpng version 1.0.9beta4 - December 1, 2000 * libpng version 1.0.9beta5 - December 15, 2000
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -13,14 +13,14 @@
#include "png.h" #include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_0_9beta4 Your_png_h_is_not_version_1_0_9beta4; typedef version_1_0_9beta5 Your_png_h_is_not_version_1_0_9beta5;
/* Version information for C files. This had better match the version /* Version information for C files. This had better match the version
* string defined in png.h. */ * string defined in png.h. */
#ifdef PNG_USE_GLOBAL_ARRAYS #ifdef PNG_USE_GLOBAL_ARRAYS
/* png_libpng_ver was changed to a function in version 1.0.5c */ /* png_libpng_ver was changed to a function in version 1.0.5c */
const char png_libpng_ver[18] = "1.0.9beta4"; const char png_libpng_ver[18] = "1.0.9beta5";
/* png_sig was changed to a function in version 1.0.5c */ /* png_sig was changed to a function in version 1.0.5c */
/* Place to hold the signature string for a PNG file. */ /* Place to hold the signature string for a PNG file. */
@ -626,7 +626,7 @@ png_charp PNGAPI
png_get_copyright(png_structp png_ptr) png_get_copyright(png_structp png_ptr)
{ {
if (png_ptr != NULL || png_ptr == NULL) /* silence compiler warning */ if (png_ptr != NULL || png_ptr == NULL) /* silence compiler warning */
return ((png_charp) "\n libpng version 1.0.9beta4 - December 1, 2000\n\ return ((png_charp) "\n libpng version 1.0.9beta5 - December 15, 2000\n\
Copyright (c) 1998-2000 Glenn Randers-Pehrson\n\ Copyright (c) 1998-2000 Glenn Randers-Pehrson\n\
Copyright (c) 1996, 1997 Andreas Dilger\n\ Copyright (c) 1996, 1997 Andreas Dilger\n\
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n"); Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n");
@ -644,8 +644,8 @@ png_get_libpng_ver(png_structp png_ptr)
{ {
/* Version of *.c files used when building libpng */ /* Version of *.c files used when building libpng */
if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */ if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */
return((png_charp) "1.0.9beta4"); return((png_charp) "1.0.9beta5");
return((png_charp) "1.0.9beta4"); return((png_charp) "1.0.9beta5");
} }
png_charp PNGAPI png_charp PNGAPI

36
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.0.9beta4 - December 1, 2000 * libpng version 1.0.9beta5 - December 15, 2000
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -9,7 +9,7 @@
* Authors and maintainers: * Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * 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 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.0.9beta4 - December 1, 2000: Glenn * libpng versions 0.97, January 1998, through 1.0.9beta5 - December 15, 2000: Glenn
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
* *
* Note about libpng version numbers: * Note about libpng version numbers:
@ -58,7 +58,7 @@
* 1.0.8beta1-4 10008 2.1.0.8beta1-4 * 1.0.8beta1-4 10008 2.1.0.8beta1-4
* 1.0.8rc1 10008 2.1.0.8rc1 * 1.0.8rc1 10008 2.1.0.8rc1
* 1.0.8 10008 2.1.0.8 * 1.0.8 10008 2.1.0.8
* 1.0.9beta1-4 10009 2.1.0.9beta1-4 * 1.0.9beta1-5 10009 2.1.0.9beta1-5
* *
* Henceforth the source version will match the shared-library major * Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be * and minor numbers; the shared-library major version number will be
@ -85,7 +85,7 @@
* If you modify libpng you may insert additional notices immediately following * If you modify libpng you may insert additional notices immediately following
* this sentence. * this sentence.
* *
* libpng versions 1.0.7, July 1, 2000, through 1.0.9beta4, December 1, 2000, are * libpng versions 1.0.7, July 1, 2000, through 1.0.9beta5, December 15, 2000, are
* Copyright (c) 2000 Glenn Randers-Pehrson, and are * Copyright (c) 2000 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.0.6 * distributed according to the same disclaimer and license as libpng-1.0.6
* with the following individuals added to the list of Contributing Authors * with the following individuals added to the list of Contributing Authors
@ -190,13 +190,13 @@
* Y2K compliance in libpng: * Y2K compliance in libpng:
* ========================= * =========================
* *
* December 1, 2000 * December 15, 2000
* *
* Since the PNG Development group is an ad-hoc body, we can't make * Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration. * an official declaration.
* *
* This is your unofficial assurance that libpng from version 0.71 and * This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.0.9beta4 are Y2K compliant. It is my belief that earlier * upward through 1.0.9beta5 are Y2K compliant. It is my belief that earlier
* versions were also Y2K compliant. * versions were also Y2K compliant.
* *
* Libpng only has three year fields. One is a 2-byte unsigned integer * Libpng only has three year fields. One is a 2-byte unsigned integer
@ -252,7 +252,7 @@
*/ */
/* Version information for png.h - this should match the version in png.c */ /* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.0.9beta4" #define PNG_LIBPNG_VER_STRING "1.0.9beta5"
#define PNG_LIBPNG_VER_SONUM 2 #define PNG_LIBPNG_VER_SONUM 2
@ -263,7 +263,7 @@
/* This should match the numeric part of the final component of /* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */ * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
#define PNG_LIBPNG_VER_BUILD 4 #define PNG_LIBPNG_VER_BUILD 5
#define PNG_LIBPNG_BUILD_ALPHA 1 #define PNG_LIBPNG_BUILD_ALPHA 1
#define PNG_LIBPNG_BUILD_BETA 2 #define PNG_LIBPNG_BUILD_BETA 2
@ -703,6 +703,7 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
/* iCCP chunk data. */ /* iCCP chunk data. */
png_charp iccp_name; /* profile name */ png_charp iccp_name; /* profile name */
png_charp iccp_profile; /* International Color Consortium profile data */ png_charp iccp_profile; /* International Color Consortium profile data */
/* Note to maintainer: should be png_bytep */
png_uint_32 iccp_proflen; /* ICC profile data length */ png_uint_32 iccp_proflen; /* ICC profile data length */
png_byte iccp_compression; /* Always zero */ png_byte iccp_compression; /* Always zero */
#endif #endif
@ -783,6 +784,7 @@ typedef png_info FAR * FAR * png_infopp;
/* This is for filter type. PNG 1.0-1.2 only define the single type. */ /* This is for filter type. PNG 1.0-1.2 only define the single type. */
#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */ #define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */
#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */
#define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE #define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE
/* These are for the interlacing type. These values should NOT be changed. */ /* These are for the interlacing type. These values should NOT be changed. */
@ -1166,12 +1168,14 @@ struct png_struct_def
png_fixed_point int_gamma; png_fixed_point int_gamma;
#endif #endif
png_byte filter_type;
}; };
/* This prevents a compiler error in png_get_copyright() in png.c if png.c /* This prevents a compiler error in png_get_copyright() in png.c if png.c
and png.h are both at * version 1.0.9beta4 and png.h are both at * version 1.0.9beta5
*/ */
typedef png_structp version_1_0_9beta4; typedef png_structp version_1_0_9beta5;
typedef png_struct FAR * FAR * png_structpp; typedef png_struct FAR * FAR * png_structpp;
@ -2023,12 +2027,14 @@ extern PNG_EXPORT(void,png_set_sRGB_gAMA_and_cHRM) PNGARG((png_structp png_ptr,
extern PNG_EXPORT(png_uint_32,png_get_iCCP) PNGARG((png_structp png_ptr, extern PNG_EXPORT(png_uint_32,png_get_iCCP) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_charpp name, int *compression_type, png_infop info_ptr, png_charpp name, int *compression_type,
png_charpp profile, png_uint_32 *proflen)); png_charpp profile, png_uint_32 *proflen));
/* Note to maintainer: profile should be png_bytepp */
#endif #endif
#if defined(PNG_iCCP_SUPPORTED) #if defined(PNG_iCCP_SUPPORTED)
extern PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr, extern PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_charp name, int compression_type, png_infop info_ptr, png_charp name, int compression_type,
png_charp profile, png_uint_32 proflen)); png_charp profile, png_uint_32 proflen));
/* Note to maintainer: profile should be png_bytep */
#endif #endif
#if defined(PNG_READ_sPLT_SUPPORTED) #if defined(PNG_READ_sPLT_SUPPORTED)
@ -2210,7 +2216,7 @@ extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
#endif #endif
#define PNG_HEADER_VERSION_STRING \ #define PNG_HEADER_VERSION_STRING \
" libpng version 1.0.9beta4 - December 1, 2000 (header)\n" " libpng version 1.0.9beta5 - December 15, 2000 (header)\n"
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
/* With these routines we avoid an integer divide, which will be slower on /* With these routines we avoid an integer divide, which will be slower on
@ -2594,6 +2600,7 @@ PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr,
PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr, PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
png_charp name, int compression_type, png_charp name, int compression_type,
png_charp profile, int proflen)); png_charp profile, int proflen));
/* Note to maintainer: profile should be png_bytep */
#endif #endif
#if defined(PNG_WRITE_sPLT_SUPPORTED) #if defined(PNG_WRITE_sPLT_SUPPORTED)
@ -2996,6 +3003,13 @@ PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr,
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#ifdef PNG_MNG_FEATURES_SUPPORTED
PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info,
png_bytep row));
PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
png_bytep row));
#endif
#endif /* PNG_INTERNAL */ #endif /* PNG_INTERNAL */
#ifdef __cplusplus #ifdef __cplusplus

2
pngasmrd.h
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@ -1,6 +1,6 @@
/* pngasmrd.h - assembler version of utilities to read a PNG file /* pngasmrd.h - assembler version of utilities to read a PNG file
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1999, 2000 Glenn Randers-Pehrson
* *

2
pngconf.h
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@ -1,6 +1,6 @@
/* pngconf.h - machine configurable file for libpng /* pngconf.h - machine configurable file for libpng
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngerror.c
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@ -1,7 +1,7 @@
/* pngerror.c - stub functions for i/o and memory allocation /* pngerror.c - stub functions for i/o and memory allocation
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pnggccrd.c
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@ -6,7 +6,7 @@
* and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm * and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
* for Intel's performance analysis of the MMX vs. non-MMX code. * for Intel's performance analysis of the MMX vs. non-MMX code.
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation * Copyright (c) 1998, Intel Corporation

2
pngget.c
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@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct /* pngget.c - retrieval of values from info struct
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngmem.c
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@ -1,7 +1,7 @@
/* pngmem.c - stub functions for memory allocation /* pngmem.c - stub functions for memory allocation
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

2
pngpread.c
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@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode /* pngpread.c - read a png file in push mode
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

15
pngread.c
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@ -1,7 +1,7 @@
/* pngread.c - read a PNG file /* pngread.c - read a PNG file
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -647,6 +647,15 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
png_memcpy_check(png_ptr, png_ptr->prev_row, png_ptr->row_buf, png_memcpy_check(png_ptr, png_ptr->prev_row, png_ptr->row_buf,
png_ptr->rowbytes + 1); png_ptr->rowbytes + 1);
#if defined(PNG_MNG_FEATURES_SUPPORTED)
if((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
{
/* Intrapixel differencing */
png_do_read_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1);
}
#endif
if (png_ptr->transformations) if (png_ptr->transformations)
png_do_read_transformations(png_ptr); png_do_read_transformations(png_ptr);
@ -701,7 +710,7 @@ 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 * not called png_set_interlace_handling(), the display_row buffer will
* be ignored, so pass NULL to it. * be ignored, so pass NULL to it.
* *
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.9beta4 * [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.9beta5
*/ */
void PNGAPI void PNGAPI
@ -750,7 +759,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
* only call this function once. If you desire to have an image for * only call this function once. If you desire to have an image for
* each pass of a interlaced image, use png_read_rows() instead. * each pass of a interlaced image, use png_read_rows() instead.
* *
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.9beta4 * [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.9beta5
*/ */
void PNGAPI void PNGAPI
png_read_image(png_structp png_ptr, png_bytepp image) png_read_image(png_structp png_ptr, png_bytepp image)

2
pngrio.c
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@ -1,7 +1,7 @@
/* pngrio.c - functions for data input /* pngrio.c - functions for data input
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

62
pngrtran.c
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@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers /* pngrtran.c - transforms the data in a row for PNG readers
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -4053,3 +4053,63 @@ png_build_gamma_table(png_structp png_ptr)
/* To do: install integer version of png_build_gamma_table here */ /* To do: install integer version of png_build_gamma_table here */
#endif #endif
#if defined(PNG_MNG_FEATURES_SUPPORTED)
/* undoes intrapixel differencing */
void /* PRIVATE */
png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_read_intrapixel\n");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
int bytes_per_pixel;
png_uint_32 row_width = row_info->width;
if (row_info->bit_depth == 8)
{
png_bytep rp;
png_uint_32 i;
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 3;
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 4;
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
*(rp) = (png_byte)((256 + *rp + *(rp+1))&0xff);
*(rp+2) = (png_byte)((256 + *(rp+2) + *(rp+1))&0xff);
}
}
else if (row_info->bit_depth == 16)
{
png_bytep rp;
png_uint_32 i;
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 6;
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 8;
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
png_uint_32 s0=*(rp )<<8 | *(rp+1);
png_uint_32 s1=*(rp+2)<<8 | *(rp+3);
png_uint_32 s2=*(rp+4)<<8 | *(rp+5);
png_uint_32 red=(65536+s0+s1)&0xffff;
png_uint_32 blue=(65536+s2+s1)&0xffff;
*(rp ) = (png_byte)((red>>8)&0xff);
*(rp+1) = (png_byte)(red&0xff);
*(rp+4) = (png_byte)((blue>>8)&0xff);
*(rp+5) = (png_byte)(blue&0xff);
}
}
}
}
#endif /* PNG_MNG_FEATURES_SUPPORTED */

12
pngrutil.c
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@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file /* pngrutil.c - utilities to read a PNG file
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -353,7 +353,14 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (compression_type != PNG_COMPRESSION_TYPE_BASE) if (compression_type != PNG_COMPRESSION_TYPE_BASE)
png_error(png_ptr, "Unknown compression method in IHDR"); png_error(png_ptr, "Unknown compression method in IHDR");
if (filter_type != PNG_FILTER_TYPE_BASE) if(
#if defined(PNG_MNG_FEATURES_SUPPORTED)
!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
(color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA)) &&
#endif
filter_type != PNG_FILTER_TYPE_BASE)
png_error(png_ptr, "Unknown filter method in IHDR"); png_error(png_ptr, "Unknown filter method in IHDR");
/* set internal variables */ /* set internal variables */
@ -362,6 +369,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->bit_depth = (png_byte)bit_depth; png_ptr->bit_depth = (png_byte)bit_depth;
png_ptr->interlaced = (png_byte)interlace_type; png_ptr->interlaced = (png_byte)interlace_type;
png_ptr->color_type = (png_byte)color_type; png_ptr->color_type = (png_byte)color_type;
png_ptr->filter_type = (png_byte)filter_type;
/* find number of channels */ /* find number of channels */
switch (png_ptr->color_type) switch (png_ptr->color_type)

2
pngset.c
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@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct /* pngset.c - storage of image information into info struct
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

4
pngtest.c
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@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng /* pngtest.c - a simple test program to test libpng
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -1449,4 +1449,4 @@ main(int argc, char *argv[])
} }
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_0_9beta4 your_png_h_is_not_version_1_0_9beta4; typedef version_1_0_9beta5 your_png_h_is_not_version_1_0_9beta5;

3
pngtrans.c
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@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers) /* pngtrans.c - transforms the data in a row (used by both readers and writers)
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -606,3 +606,4 @@ png_get_user_transform_ptr(png_structp png_ptr)
return (NULL); return (NULL);
#endif #endif
} }

2
pngvcrd.c
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@ -2,7 +2,7 @@
* *
* For Intel x86 CPU and Microsoft Visual C++ compiler * For Intel x86 CPU and Microsoft Visual C++ compiler
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation * Copyright (c) 1998, Intel Corporation

2
pngwio.c
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@ -1,7 +1,7 @@
/* pngwio.c - functions for data output /* pngwio.c - functions for data output
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

11
pngwrite.c
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@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file /* pngwrite.c - general routines to write a PNG file
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -773,6 +773,15 @@ png_write_row(png_structp png_ptr, png_bytep row)
if (png_ptr->transformations) if (png_ptr->transformations)
png_do_write_transformations(png_ptr); png_do_write_transformations(png_ptr);
#if defined(PNG_MNG_FEATURES_SUPPORTED)
if((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
{
/* Intrapixel differencing */
png_do_write_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1);
}
#endif
/* Find a filter if necessary, filter the row and write it out. */ /* Find a filter if necessary, filter the row and write it out. */
png_write_find_filter(png_ptr, &(png_ptr->row_info)); png_write_find_filter(png_ptr, &(png_ptr->row_info));

63
pngwtran.c
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@ -1,7 +1,7 @@
/* pngwtran.c - transforms the data in a row for PNG writers /* pngwtran.c - transforms the data in a row for PNG writers
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -498,3 +498,64 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
} }
} }
#endif #endif
#if defined(PNG_MNG_FEATURES_SUPPORTED)
/* undoes intrapixel differencing */
void /* PRIVATE */
png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_write_intrapixel\n");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))
{
int bytes_per_pixel;
png_uint_32 row_width = row_info->width;
if (row_info->bit_depth == 8)
{
png_bytep rp;
png_uint_32 i;
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 3;
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 4;
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
*(rp) = (png_byte)((*rp - *(rp+1))&0xff);
*(rp+2) = (png_byte)((*(rp+2) - *(rp+1))&0xff);
}
}
else if (row_info->bit_depth == 16)
{
png_bytep rp;
png_uint_32 i;
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
bytes_per_pixel = 6;
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
bytes_per_pixel = 8;
else
return;
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
png_uint_32 s0=*(rp )<<8 | *(rp+1);
png_uint_32 s1=*(rp+2)<<8 | *(rp+3);
png_uint_32 s2=*(rp+4)<<8 | *(rp+5);
png_uint_32 red=(s0-s1)&0xffff;
png_uint_32 blue=(s2-s1)&0xffff;
*(rp ) = (png_byte)((red>>8)&0xff);
*(rp+1) = (png_byte)(red&0xff);
*(rp+4) = (png_byte)((blue>>8)&0xff);
*(rp+5) = (png_byte)(blue&0xff);
}
}
}
}
#endif /* PNG_MNG_FEATURES_SUPPORTED */

10
pngwutil.c
View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file /* pngwutil.c - utilities to write a PNG file
* *
* libpng 1.0.9beta4 - December 1, 2000 * libpng 1.0.9beta5 - December 15, 2000
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -419,7 +419,12 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
compression_type = PNG_COMPRESSION_TYPE_BASE; compression_type = PNG_COMPRESSION_TYPE_BASE;
} }
if (filter_type != PNG_FILTER_TYPE_BASE) if (
#if defined(PNG_MNG_FEATURES_SUPPORTED)
!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(filter_type == PNG_INTRAPIXEL_DIFFERENCING)) &&
#endif
filter_type != PNG_FILTER_TYPE_BASE)
{ {
png_warning(png_ptr, "Invalid filter type specified"); png_warning(png_ptr, "Invalid filter type specified");
filter_type = PNG_FILTER_TYPE_BASE; filter_type = PNG_FILTER_TYPE_BASE;
@ -440,6 +445,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
png_ptr->bit_depth = (png_byte)bit_depth; png_ptr->bit_depth = (png_byte)bit_depth;
png_ptr->color_type = (png_byte)color_type; png_ptr->color_type = (png_byte)color_type;
png_ptr->interlaced = (png_byte)interlace_type; png_ptr->interlaced = (png_byte)interlace_type;
png_ptr->filter_type = (png_byte)filter_type;
png_ptr->width = width; png_ptr->width = width;
png_ptr->height = height; png_ptr->height = height;

2
projects/msvc/README.txt
View File

@ -1,5 +1,5 @@
Microsoft Developer Studio Build File, Format Version 6.00 for Microsoft Developer Studio Build File, Format Version 6.00 for
libpng 1.0.9beta4 (December 1, 2000) and zlib libpng 1.0.9beta5 (December 15, 2000) and zlib
Copyright (C) 2000 Simon-Pierre Cadieux Copyright (C) 2000 Simon-Pierre Cadieux
For conditions of distribution and use, see copyright notice in png.h For conditions of distribution and use, see copyright notice in png.h

2
projects/msvc/png32ms.def
View File

@ -6,7 +6,7 @@ LIBRARY
DESCRIPTION "PNG image compression library for Windows" DESCRIPTION "PNG image compression library for Windows"
EXPORTS EXPORTS
;Version 1.0.9beta4 ;Version 1.0.9beta5
png_build_grayscale_palette @1 png_build_grayscale_palette @1
png_check_sig @2 png_check_sig @2
png_chunk_error @3 png_chunk_error @3

8
projects/wince/READMEE.WCE
View File

@ -8,9 +8,9 @@ libpng for WindowsCE Rel.1.0
Introduction Introduction
============ ============
This is libpng 1.0.9beta4 ported to WindowsCE 2.0 and 2.11. This is libpng 1.0.9beta5 ported to WindowsCE 2.0 and 2.11.
libpng 1.0.9beta4 is a PNG reference library. libpng 1.0.9beta5 is a PNG reference library.
See README, a document of original libpng 1.0.9beta4. See README, a document of original libpng 1.0.9beta5.
zlib for WindowsCE zlib for WindowsCE
================== ==================
@ -23,7 +23,7 @@ This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages warranty. In no event will the authors be held liable for any damages
arising from the use of this software. arising from the use of this software.
See README and LICENSE, documents of original libpng 1.0.9beta4, for conditions See README and LICENSE, documents of original libpng 1.0.9beta5, for conditions
of use and distribution. of use and distribution.
Files Files

2
projects/wince/READMEJ.WCE
View File

@ -24,7 +24,7 @@ libpng
になったいかなる被害についても、作者、配布者、その他利用者以外の人物、 になったいかなる被害についても、作者、配布者、その他利用者以外の人物、
団体に責任をとる義務はないものとします。 団体に責任をとる義務はないものとします。
その他、このソフトウェアの利用条件については、原版である libpng 1.0.9beta4に その他、このソフトウェアの利用条件については、原版である libpng 1.0.9beta5に
準拠するものとします。詳しくは、付属の README,LICENSE をお読みください。 準拠するものとします。詳しくは、付属の README,LICENSE をお読みください。
収録内容 収録内容

2
projects/wince/png32ce.def
View File

@ -5,7 +5,7 @@
LIBRARY lpngce LIBRARY lpngce
EXPORTS EXPORTS
;Version 1.0.9beta4 ;Version 1.0.9beta5
png_build_grayscale_palette @1 png_build_grayscale_palette @1
png_check_sig @2 png_check_sig @2
png_chunk_error @3 png_chunk_error @3

2
scripts/makefile.aix
View File

@ -18,7 +18,7 @@ RM = rm -f
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not # read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it. # have to change it.
PNGMAJ = 2 PNGMAJ = 2
PNGMIN = 1.0.9beta4 PNGMIN = 1.0.9beta5
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local prefix=/usr/local

2
scripts/makefile.beos
View File

@ -31,7 +31,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not # read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it. # have to change it.
PNGMAJ = 2 PNGMAJ = 2
PNGMIN = 1.0.9beta4 PNGMIN = 1.0.9beta5
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# where make install puts libpng.a, libpng.so*, and png.h # where make install puts libpng.a, libpng.so*, and png.h

2
scripts/makefile.cygwin
View File

@ -38,7 +38,7 @@ CFLAGS=-I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not # read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it. # have to change it.
PNGMAJ = 2 PNGMAJ = 2
PNGMIN = 1.0.9beta4 PNGMIN = 1.0.9beta5
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=cygpng$(PNGMAJ).dll SHAREDLIB=cygpng$(PNGMAJ).dll

2
scripts/makefile.dec
View File

@ -17,7 +17,7 @@ ZLIBINC=../zlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not # read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it. # have to change it.
PNGMAJ = 2 PNGMAJ = 2
PNGMIN = 1.0.9beta4 PNGMIN = 1.0.9beta5
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
CC=cc CC=cc

2
scripts/makefile.gcmmx
View File

@ -37,7 +37,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not # read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it. # have to change it.
PNGMAJ = 2 PNGMAJ = 2
PNGMIN = 1.0.9beta4 PNGMIN = 1.0.9beta5
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include INCPATH=$(prefix)/include

2
scripts/makefile.hpux
View File

@ -18,7 +18,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not # read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it. # have to change it.
PNGMAJ = 2 PNGMAJ = 2
PNGMIN = 1.0.9beta4 PNGMIN = 1.0.9beta5
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# where make install puts libpng.a and png.h # where make install puts libpng.a and png.h

2
scripts/makefile.linux
View File

@ -34,7 +34,7 @@ RANLIB=ranlib
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not # read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it. # have to change it.
PNGMAJ = 2 PNGMAJ = 2
PNGMIN = 1.0.9beta4 PNGMIN = 1.0.9beta5
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include INCPATH=$(prefix)/include

2
scripts/makefile.sco
View File

@ -25,7 +25,7 @@ RANLIB=echo
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not # read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it. # have to change it.
PNGMAJ = 2 PNGMAJ = 2
PNGMIN = 1.0.9beta4 PNGMIN = 1.0.9beta5
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include INCPATH=$(prefix)/include

4
scripts/makefile.sggcc
View File

@ -19,8 +19,8 @@ CFLAGS=-I$(ZLIBINC) -O2 $(WARNMORE) -fPIC -mabi=n32 # -g -DPNG_DEBUG=5
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=gcc -shared LDSHARED=gcc -shared
VER=1.0.9beta4 VER=1.0.9beta5
LIBS=libpng.so.1.0.9beta4 LIBS=libpng.so.1.0.9beta5
SHAREDLIB=libpng.so SHAREDLIB=libpng.so
libdir=$(prefix)/lib32 libdir=$(prefix)/lib32

2
scripts/makefile.solaris
View File

@ -31,7 +31,7 @@ RANLIB=echo
# read libpng.txt or png.h to see why PNGMAJ is 2. You should not # read libpng.txt or png.h to see why PNGMAJ is 2. You should not
# have to change it. # have to change it.
PNGMAJ = 2 PNGMAJ = 2
PNGMIN = 1.0.9beta4 PNGMIN = 1.0.9beta5
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include INCPATH=$(prefix)/include

2
scripts/pngdef.pas
View File

@ -5,7 +5,7 @@ unit pngdef;
interface interface
const const
PNG_LIBPNG_VER_STRING = '1.0.9beta4'; PNG_LIBPNG_VER_STRING = '1.0.9beta5';
PNG_LIBPNG_VER = 10009; PNG_LIBPNG_VER = 10009;
type type