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Imported from libpng-1.2.7rc1.tar

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This commit is contained in:
Glenn Randers-Pehrson 2004-09-04 13:25:08 -05:00
parent 67864af957
commit 5b77916ecd
55 changed files with 183 additions and 135 deletions
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6
ANNOUNCE
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@ -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

4
CHANGES
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@ -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

14
INSTALL
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@ -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

2
KNOWNBUG
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@ -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

4
LICENSE
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@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following
this sentence.
libpng 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

12
README
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@ -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

4
Y2KINFO
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@ -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

4
configure vendored
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@ -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
"

44
libpng.3
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@ -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

32
libpng.txt
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@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
libpng version 1.2.7beta2 - 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

4
libpngpf.3
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@ -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

2
png.5
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@ -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

6
png.c
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@ -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");

22
png.h
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@ -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;

2
pngconf.h
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@ -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)

2
pngerror.c
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@ -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)

2
pnggccrd.c
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@ -6,7 +6,7 @@
* and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
* for Intel's performance analysis of the MMX vs. non-MMX code.
*
* libpng version 1.2.7beta2 - 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

2
pngget.c
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@ -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)

2
pngmem.c
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@ -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)

2
pngpread.c
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@ -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)

6
pngread.c
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@ -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)

2
pngrio.c
View File

@ -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)

2
pngrtran.c
View File

@ -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)

2
pngrutil.c
View File

@ -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)

2
pngset.c
View File

@ -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)

4
pngtest.c
View File

@ -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;

20
pngtrans.c
View File

@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* libpng 1.2.7beta2 - 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
pngvcrd.c
View File

@ -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

2
pngwio.c
View File

@ -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)

2
pngwrite.c
View File

@ -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)

2
pngwtran.c
View File

@ -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)

52
pngwutil.c
View File

@ -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;
}
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;
}

2
scripts/libpng-config-head.in
View File

@ -8,7 +8,7 @@
# Modeled after libxml-config.
version=1.2.7beta2
version=1.2.7rc1
prefix=""
libdir=""
libs=""

2
scripts/libpng.pc.in
View File

@ -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

2
scripts/makefile.32sunu
View File

@ -33,7 +33,7 @@ RANLIB=echo
LIBNAME=libpng12
PNGMAJ = 0
PNGMIN = 1.2.7beta2
PNGMIN = 1.2.7rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/makefile.64sunu
View File

@ -33,7 +33,7 @@ RANLIB=echo
LIBNAME=libpng12
PNGMAJ = 0
PNGMIN = 1.2.7beta2
PNGMIN = 1.2.7rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include

2
scripts/makefile.aix
View File

@ -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

2
scripts/makefile.beos
View File

@ -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=

2
scripts/makefile.cygwin
View File

@ -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

2
scripts/makefile.darwin
View File

@ -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

2
scripts/makefile.dec
View File

@ -32,7 +32,7 @@ ZLIBLIB=../zlib
ZLIBINC=../zlib
PNGMAJ = 0
PNGMIN = 1.2.7beta2
PNGMIN = 1.2.7rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12

2
scripts/makefile.gcmmx
View File

@ -15,7 +15,7 @@
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.7beta2
PNGMIN = 1.2.7rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
CC=gcc

2
scripts/makefile.hpgcc
View File

@ -41,7 +41,7 @@ RANLIB=ranlib
#RANLIB=echo
PNGMAJ = 0
PNGMIN = 1.2.7beta2
PNGMIN = 1.2.7rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12

2
scripts/makefile.hpux
View File

@ -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

2
scripts/makefile.linux
View File

@ -5,7 +5,7 @@
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.7beta2
PNGMIN = 1.2.7rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
CC=gcc

2
scripts/makefile.ne12bsd
View File

@ -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

2
scripts/makefile.netbsd
View File

@ -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

2
scripts/makefile.openbsd
View File

@ -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 \

2
scripts/makefile.sco
View File

@ -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

2
scripts/makefile.sggcc
View File

@ -18,7 +18,7 @@ ZLIBINC=../zlib
LIBNAME=libpng12
PNGMAJ = 0
PNGMIN = 1.2.7beta2
PNGMIN = 1.2.7rc1
PNGVER = $(PNGMAJ).$(PNGMIN)
CC=gcc

2
scripts/makefile.sgi
View File

@ -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

2
scripts/makefile.so9
View File

@ -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

2
scripts/makefile.solaris
View File

@ -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

2
scripts/pngos2.def
View File

@ -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"

2
scripts/pngw32.def
View File

@ -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