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Imported from libpng-1.2.6rc1.tar

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Glenn Randers-Pehrson 2004-08-04 06:34:52 -05:00
parent 5fea36fb00
commit 272489dc69
73 changed files with 2230 additions and 2263 deletions
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19
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.2.6beta4 - July 28, 2004 Libpng 1.2.6rc1 - August 4, 2004
This is not intended to be a public release. It will be replaced 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. within a few weeks by a public version or by another test version.
@ -76,9 +76,24 @@ Changes since the last public release (1.2.5):
Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4. Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4.
Revised Borland portion of png_malloc() to return NULL or issue Revised Borland portion of png_malloc() to return NULL or issue
png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK. png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK.
Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove
sequential read support.
Added some "#if PNG_WRITE_SUPPORTED" blocks.
#ifdef'ed out some redundancy in png_malloc_default().
Use png_malloc instead of png_zalloc to allocate the pallete.
Rearranged order of processing of color types in png_handle_tRNS().
Added PNG_ROWBYTES macro to calculate rowbytes without integer overflow.
Updated makefile.darwin and removed makefile.macosx from scripts directory.
Imposed default one million column, one-million row limits on the image
dimensions, and added png_set_user_limits() function and
PNG_SET_USER_LIMITS_SUPPORTED macro to override them..
Fixed wrong cast of returns from png_get_user_width|height_max().
Fixed buffer overflow vulnerability in png_handle_tRNS()
Fixed integer arithmetic overflow vulnerability in png_read_png().
Fixed some harmless bugs in png_handle_sBIT, etc, that would cause
duplicate chunk types to go undetected.
Send comments/corrections/commendations to Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to glennrp@users.sourceforge.net png-implement@ccrc.wustl.edu or to glennrp@users.sourceforge.net
Glenn R-P Glenn R-P

25
CHANGES
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@ -1241,7 +1241,7 @@ version 1.2.6beta3 [July 18, 2004]
Updated contrib/visupng/VisualPng.dsp (Cosmin). Updated contrib/visupng/VisualPng.dsp (Cosmin).
Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin). Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin).
Added a separate distribution with "configure" and supporting files (Junichi). Added a separate distribution with "configure" and supporting files (Junichi).
version 1.2.6beta4 [July 28, 2004] version 1.2.6beta4 [August 4, 2004]
Added user ability to change png_size_t via a PNG_SIZE_T macro. Added user ability to change png_size_t via a PNG_SIZE_T macro.
Added png_sizeof() and png_convert_size() functions. Added png_sizeof() and png_convert_size() functions.
Added PNG_SIZE_MAX (maximum value of a png_size_t variable. Added PNG_SIZE_MAX (maximum value of a png_size_t variable.
@ -1256,6 +1256,7 @@ version 1.2.6beta4 [July 28, 2004]
overflow. overflow.
Turn on PNG_NO_ZALLOC_ZERO by default in version 1.2.x Turn on PNG_NO_ZALLOC_ZERO by default in version 1.2.x
Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4. Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4.
version 1.2.6beta4 [July 28, 2004]
Revised Borland portion of png_malloc() to return NULL or issue Revised Borland portion of png_malloc() to return NULL or issue
png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK. png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK.
Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove
@ -1263,7 +1264,27 @@ version 1.2.6beta4 [July 28, 2004]
Added some "#if PNG_WRITE_SUPPORTED" blocks. Added some "#if PNG_WRITE_SUPPORTED" blocks.
#ifdef'ed out some redundancy in png_malloc_default(). #ifdef'ed out some redundancy in png_malloc_default().
Use png_malloc instead of png_zalloc to allocate the pallete. Use png_malloc instead of png_zalloc to allocate the pallete.
version 1.2.6beta4d [July 28, 2004]
Fixed buffer overflow vulnerability in png_handle_tRNS()
Fixed integer arithmetic overflow vulnerability in png_read_png().
Fixed some harmless bugs in png_handle_sBIT, etc, that would cause
duplicate chunk types to go undetected.
Fixed some timestamps in the -config version
version 1.2.6beta4e [July 28, 2004]
Fixed some timestamps in the -config version
version 1.2.6beta4f [July 28, 2004]
Rearranged order of processing of color types in png_handle_tRNS().
version 1.2.6beta4g [July 31, 2004]
Added ROWBYTES macro to calculate rowbytes without integer overflow.
Updated makefile.darwin and removed makefile.macosx from scripts directory.
version 1.2.6beta4h [August 1, 2004]
Imposed default one million column, one-million row limits on the image
dimensions, and added png_set_user_limits() function to override them.
Revised use of PNG_SET_USER_LIMITS_SUPPORTED macro.
version 1.2.6beta4j [August 1, 2004]
Fixed wrong cast of returns from png_get_user_width|height_max().
version 1.2.6rc6 [August 4, 2004]
Changed some "keep the compiler happy" from empty statements to returns,
Send comments/corrections/commendations to Send comments/corrections/commendations to
png-implement@ccrc.wustl.edu or to glennrp@users.sourceforge.net png-implement@ccrc.wustl.edu or to glennrp@users.sourceforge.net

17
INSTALL
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@ -1,5 +1,5 @@
Installing libpng version 1.2.6beta4 - July 28, 2004 Installing libpng version 1.2.6rc1 - August 4, 2004
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-1.2.6beta4" or "lpng109" and "zlib-1.1.3" might be called "libpng-1.2.6rc1" 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:
@ -64,8 +64,8 @@ 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 libpng12.so.0.1.2.6beta4) makefile.linux => Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.6rc1)
makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.6beta4, makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.6rc1,
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
@ -73,7 +73,7 @@ include
ftp://ftp.cs.wisc.edu/ghost) ftp://ftp.cs.wisc.edu/ghost)
makefile.aix => AIX/gcc makefile makefile.aix => AIX/gcc makefile
makefile.cygwin => Cygwin/gcc makefile makefile.cygwin => Cygwin/gcc makefile
makefile.darwin => Darwin makefile makefile.darwin => Darwin makefile, can use on MacosX
makefile.dec => DEC Alpha UNIX makefile makefile.dec => DEC Alpha UNIX makefile
makefile.hpgcc => FreeBSD makefile makefile.hpgcc => FreeBSD makefile
makefile.hpgcc => HPUX makefile using gcc makefile.hpgcc => HPUX makefile using gcc
@ -81,15 +81,14 @@ include
makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static) makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
makefile.intel => Intel C/C++ version 4.0 and later makefile.intel => Intel C/C++ version 4.0 and later
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.netbsd => NetBSD/cc makefile, uses PNGGCCRD, makes libpng.so. makefile.netbsd => NetBSD/cc makefile, uses PNGGCCRD, makes libpng.so.
makefile.ne0bsd => NetBSD/cc makefile, uses PNGGCCRD, makes libpng0.so makefile.ne0bsd => NetBSD/cc makefile, uses PNGGCCRD, makes libpng0.so
makefile.openbsd => OpenBSD makefile makefile.openbsd => OpenBSD 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 libpng12.so.0.1.2.6beta4) makefile.sggcc => Silicon Graphics (gcc, creates libpng12.so.0.1.2.6rc1)
makefile.sunos => Sun makefile makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc, creates libpng12.so.0.1.2.6beta4) makefile.solaris => Solaris 2.X makefile (gcc, creates libpng12.so.0.1.2.6rc1)
makefile.so9 => Solaris 9 makefile (gcc, creates libpng12.so.0.1.2.6beta4) makefile.so9 => Solaris 9 makefile (gcc, creates libpng12.so.0.1.2.6rc1)
makefile.32sunu => Sun Ultra 32-bit makefile makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc 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 1.2.6beta4 Known bugs in libpng version 1.2.6rc1
1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when 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 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 If you modify libpng you may insert additional notices immediately following
this sentence. this sentence.
libpng version 1.2.6, July 28, 2004, is libpng version 1.2.6, August 4, 2004, is
Copyright (c) 2004 Glenn Randers-Pehrson, and is Copyright (c) 2004 Glenn Randers-Pehrson, and is
distributed according to the same disclaimer and license as libpng-1.2.5 distributed according to the same disclaimer and license as libpng-1.2.5
with the following individuals added to the list of Contributing Authors with the following individuals added to the list of Contributing Authors
@ -107,4 +107,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson Glenn Randers-Pehrson
glennrp@users.sourceforge.net glennrp@users.sourceforge.net
July 28, 2004 August 4, 2004

2
README
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@ -1,4 +1,4 @@
README for libpng version 1.2.6beta4 - July 28, 2004 (shared library 12.0) README for libpng version 1.2.6rc1 - August 4, 2004 (shared library 12.0)
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.

4
Y2KINFO
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@ -1,13 +1,13 @@
Y2K compliance in libpng: Y2K compliance in libpng:
========================= =========================
July 28, 2004 August 4, 2004
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 1.2.6beta4 are Y2K compliant. It is my belief that earlier upward through 1.2.6rc1 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

4
configure vendored
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@ -1,13 +1,13 @@
#!/bin/sh #!/bin/sh
echo " echo "
There is no \"configure\" script in this distribution of There is no \"configure\" script in this distribution of
libpng-1.2.6beta4. libpng-1.2.6rc1.
Instead, please copy the appropriate makefile for your system from the Instead, please copy the appropriate makefile for your system from the
\"scripts\" directory. Read the INSTALL file for more details. \"scripts\" directory. Read the INSTALL file for more details.
Update, July 2004: you can get a "configure" based distribution Update, July 2004: you can get a "configure" based distribution
from the libpng distribution sites. Download the file from the libpng distribution sites. Download the file
libpng-1.2.6beta4-config.tar.gz libpng-1.2.6rc1-config.tar.gz
" "

292
libpng.3
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@ -1,6 +1,6 @@
.TH LIBPNG 3 "July 28, 2004" .TH LIBPNG 3 "August 4, 2004"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.6beta4 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.6rc1
.SH SYNOPSIS .SH SYNOPSIS
\fI\fB \fI\fB
@ -266,10 +266,18 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.2.6beta4
\fI\fB \fI\fB
\fBpng_uint_32 png_get_user_height_max( png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
\fBpng_voidp png_get_user_transform_ptr (png_structp \fIpng_ptr\fP\fB);\fP \fBpng_voidp png_get_user_transform_ptr (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB \fI\fB
\fBpng_uint_32 png_get_user_width_max (png_structp \fIpng_ptr\fP\fB);\fP
\fI\fB
\fBpng_uint_32 png_get_valid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIflag\fP\fB);\fP \fBpng_uint_32 png_get_valid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIflag\fP\fB);\fP
\fI\fB \fI\fB
@ -650,6 +658,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.2.6beta4
\fI\fB \fI\fB
\fBvoid png_set_user_limits (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIuser_width_max\fP\fB, png_uint_32 \fIuser_height_max\fP\fB);\fP
\fI\fB
\fBvoid png_set_user_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_transform_ptr\fP\fB, int \fP\fIuser_transform_depth\fP\fB, int \fIuser_transform_channels\fP\fB);\fP \fBvoid png_set_user_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_transform_ptr\fP\fB, int \fP\fIuser_transform_depth\fP\fB, int \fIuser_transform_channels\fP\fB);\fP
\fI\fB \fI\fB
@ -761,7 +773,7 @@ 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 1.2.6beta4 - July 28, 2004 libpng version 1.2.6rc1 - August 4, 2004
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<glennrp@users.sourceforge.net> <glennrp@users.sourceforge.net>
Copyright (c) 1998-2004 Glenn Randers-Pehrson Copyright (c) 1998-2004 Glenn Randers-Pehrson
@ -1061,6 +1073,28 @@ To inform libpng about your function, use
png_set_read_status_fn(png_ptr, read_row_callback); png_set_read_status_fn(png_ptr, read_row_callback);
%-%.SS Width and height limits
%-%
%-%The PNG specification allows the width and height of an image to be as
%-%large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
%-%Since very few applications really need to process such large images,
%-%we have imposed an arbitrary 1-million limit on rows and columns.
%-%Larger images will be rejected immediately with a png_error() call. If
%-%you wish to override this limit, you can use
%-%
%-% png_set_user_limits(png_ptr, width_max, height_max);
%-%
%-%to set your own limits, or use width_max = height_max = 0x7fffffffL
%-%to allow all valid dimensions (libpng may reject some very large images
%-%anyway because of potential buffer overflow conditions).
%-%
%-%You should put this statement after you create the PNG structure and
%-%before calling png_read_info(), png_read_png(), or png_process_data().
%-%If you need to retrieve the limits that are being applied, use
%-%
%-% width_max = png_get_user_width_max(png_ptr);
%-% height_max = png_get_user_height_max(png_ptr);
%-%
.SS Unknown-chunk handling .SS Unknown-chunk handling
Now you get to set the way the library processes unknown chunks in the Now you get to set the way the library processes unknown chunks in the
@ -1069,7 +1103,7 @@ behavior is that known chunks will be parsed into information in
various info_ptr members; unknown chunks will be discarded. To change various info_ptr members; unknown chunks will be discarded. To change
this, you can call: this, you can call:
png_set_keep_unknown_chunks(png_ptr, info_ptr, keep, png_set_keep_unknown_chunks(png_ptr, keep,
chunk_list, num_chunks); chunk_list, num_chunks);
keep - 0: do not keep keep - 0: do not keep
1: keep only if safe-to-copy 1: keep only if safe-to-copy
@ -3420,125 +3454,125 @@ 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. Runtime optimization %-%.SH VI. Runtime optimization
%-%
A new feature in libpng 1.2.0 is the ability to dynamically switch between %-%A new feature in libpng 1.2.0 is the ability to dynamically switch between
standard and optimized versions of some routines. Currently these are %-%standard and optimized versions of some routines. Currently these are
limited to three computationally intensive tasks when reading PNG files: %-%limited to three computationally intensive tasks when reading PNG files:
decoding row filters, expanding interlacing, and combining interlaced or %-%decoding row filters, expanding interlacing, and combining interlaced or
transparent row data with previous row data. Currently the optimized %-%transparent row data with previous row data. Currently the optimized
versions are available only for x86 (Intel, AMD, etc.) platforms with %-%versions are available only for x86 (Intel, AMD, etc.) platforms with
MMX support, though this may change in future versions. (For example, %-%MMX support, though this may change in future versions. (For example,
the non-MMX assembler optimizations for zlib might become similarly %-%the non-MMX assembler optimizations for zlib might become similarly
runtime-selectable in future releases, in which case libpng could be %-%runtime-selectable in future releases, in which case libpng could be
extended to support them. Alternatively, the compile-time choice of %-%extended to support them. Alternatively, the compile-time choice of
floating-point versus integer routines for gamma correction might become %-%floating-point versus integer routines for gamma correction might become
runtime-selectable.) %-%runtime-selectable.)
%-%
Because such optimizations tend to be very platform- and compiler-dependent, %-%Because such optimizations tend to be very platform- and compiler-dependent,
both in how they are written and in how they perform, the new runtime code %-%both in how they are written and in how they perform, the new runtime code
in libpng has been written to allow programs to query, enable, and disable %-%in libpng has been written to allow programs to query, enable, and disable
either specific optimizations or all such optimizations. For example, to %-%either specific optimizations or all such optimizations. For example, to
enable all possible optimizations (bearing in mind that some "optimizations" %-%enable all possible optimizations (bearing in mind that some "optimizations"
may actually run more slowly in rare cases): %-%may actually run more slowly in rare cases):
%-%
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200) %-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
png_uint_32 mask, flags; %-% png_uint_32 mask, flags;
%-%
flags = png_get_asm_flags(png_ptr); %-% flags = png_get_asm_flags(png_ptr);
mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE); %-% mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
png_set_asm_flags(png_ptr, flags | mask); %-% png_set_asm_flags(png_ptr, flags | mask);
#endif %-% #endif
%-%
To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ %-%To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ
by itself when calling png_get_asm_flagmask(); similarly for optimizing %-%by itself when calling png_get_asm_flagmask(); similarly for optimizing
only writing. To disable all optimizations: %-%only writing. To disable all optimizations:
%-%
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200) %-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
flags = png_get_asm_flags(png_ptr); %-% flags = png_get_asm_flags(png_ptr);
mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE); %-% mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
png_set_asm_flags(png_ptr, flags & ~mask); %-% png_set_asm_flags(png_ptr, flags & ~mask);
#endif %-% #endif
%-%
To enable or disable only MMX-related features, use png_get_mmx_flagmask() %-%To enable or disable only MMX-related features, use png_get_mmx_flagmask()
in place of png_get_asm_flagmask(). The mmx version takes one additional %-%in place of png_get_asm_flagmask(). The mmx version takes one additional
parameter: %-%parameter:
%-%
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200) %-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
int selection = PNG_SELECT_READ | PNG_SELECT_WRITE; %-% int selection = PNG_SELECT_READ | PNG_SELECT_WRITE;
int compilerID; %-% int compilerID;
%-%
mask = png_get_mmx_flagmask(selection, &compilerID); %-% mask = png_get_mmx_flagmask(selection, &compilerID);
#endif %-% #endif
%-%
On return, compilerID will indicate which version of the MMX assembler %-%On return, compilerID will indicate which version of the MMX assembler
optimizations was compiled. Currently two flavors exist: Microsoft %-%optimizations was compiled. Currently two flavors exist: Microsoft
Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2). %-%Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2).
On non-x86 platforms or on systems compiled without MMX optimizations, a %-%On non-x86 platforms or on systems compiled without MMX optimizations, a
value of -1 is used. %-%value of -1 is used.
%-%
Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return %-%Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return
all valid, settable optimization bits for the version of the library that's %-%all valid, settable optimization bits for the version of the library that's
currently in use. In the case of shared (dynamically linked) libraries, %-%currently in use. In the case of shared (dynamically linked) libraries,
this may include optimizations that did not exist at the time the code was %-%this may include optimizations that did not exist at the time the code was
written and compiled. It is also possible, of course, to enable only known, %-%written and compiled. It is also possible, of course, to enable only known,
specific optimizations; for example: %-%specific optimizations; for example:
%-%
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200) %-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \ %-% flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
| PNG_ASM_FLAG_MMX_READ_INTERLACE \ %-% | PNG_ASM_FLAG_MMX_READ_INTERLACE \
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB \ %-% | PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
| PNG_ASM_FLAG_MMX_READ_FILTER_UP \ %-% | PNG_ASM_FLAG_MMX_READ_FILTER_UP \
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \ %-% | PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ; %-% | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
png_set_asm_flags(png_ptr, flags); %-% png_set_asm_flags(png_ptr, flags);
#endif %-% #endif
%-%
This method would enable only the MMX read-optimizations available at the %-%This method would enable only the MMX read-optimizations available at the
time of libpng 1.2.0's release, regardless of whether a later version of %-%time of libpng 1.2.0's release, regardless of whether a later version of
the DLL were actually being used. (Also note that these functions did not %-%the DLL were actually being used. (Also note that these functions did not
exist in versions older than 1.2.0, so any attempt to run a dynamically %-%exist in versions older than 1.2.0, so any attempt to run a dynamically
linked app on such an older version would fail.) %-%linked app on such an older version would fail.)
%-%
To determine whether the processor supports MMX instructions at all, use %-%To determine whether the processor supports MMX instructions at all, use
the png_mmx_support() function: %-%the png_mmx_support() function:
%-%
#if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200) %-% #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
mmxsupport = png_mmx_support(); %-% mmxsupport = png_mmx_support();
#endif %-% #endif
%-%
It returns -1 if MMX support is not compiled into libpng, 0 if MMX code %-%It returns -1 if MMX support is not compiled into libpng, 0 if MMX code
is compiled but MMX is not supported by the processor, or 1 if MMX support %-%is compiled but MMX is not supported by the processor, or 1 if MMX support
is fully available. Note that png_mmx_support(), png_get_mmx_flagmask(), %-%is fully available. Note that png_mmx_support(), png_get_mmx_flagmask(),
and png_get_asm_flagmask() all may be called without allocating and ini- %-%and png_get_asm_flagmask() all may be called without allocating and ini-
tializing any PNG structures (for example, as part of a usage screen or %-%tializing any PNG structures (for example, as part of a usage screen or
"about" box). %-%"about" box).
%-%
The following code can be used to prevent an application from using the %-%The following code can be used to prevent an application from using the
thread_unsafe features, even if libpng was built with PNG_THREAD_UNSAFE_OK %-%thread_unsafe features, even if libpng was built with PNG_THREAD_UNSAFE_OK
defined: %-%defined:
%-%
#if defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) \ %-%#if defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) \
&& defined(PNG_THREAD_UNSAFE_OK) %-% && defined(PNG_THREAD_UNSAFE_OK)
/* Disable thread-unsafe features of pnggccrd */ %-% /* Disable thread-unsafe features of pnggccrd */
if (png_access_version() >= 10200) %-% if (png_access_version() >= 10200)
{ %-% {
png_uint_32 mmx_disable_mask = 0; %-% png_uint_32 mmx_disable_mask = 0;
png_uint_32 asm_flags; %-% png_uint_32 asm_flags;
%-%
mmx_disable_mask |= ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \ %-% mmx_disable_mask |= ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB \ %-% | PNG_ASM_FLAG_MMX_READ_FILTER_SUB \
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG \ %-% | PNG_ASM_FLAG_MMX_READ_FILTER_AVG \
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ); %-% | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
asm_flags = png_get_asm_flags(png_ptr); %-% asm_flags = png_get_asm_flags(png_ptr);
png_set_asm_flags(png_ptr, asm_flags & ~mmx_disable_mask); %-% png_set_asm_flags(png_ptr, asm_flags & ~mmx_disable_mask);
} %-% }
#endif %-%#endif
%-%
For more extensive examples of runtime querying, enabling and disabling %-%For more extensive examples of runtime querying, enabling and disabling
of optimized features, see contrib/gregbook/readpng2.c in the libpng %-%of optimized features, see contrib/gregbook/readpng2.c in the libpng
source-code distribution. %-%source-code distribution.
%-%
.SH VI. MNG support .SH VI. MNG support
The MNG specification (available at http://www.libpng.org/pub/mng) allows The MNG specification (available at http://www.libpng.org/pub/mng) allows
@ -3615,13 +3649,13 @@ application:
.SH VII. Y2K Compliance in libpng .SH VII. Y2K Compliance in libpng
July 28, 2004 August 4, 2004
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 1.2.6beta4 are Y2K compliant. It is my belief that earlier upward through 1.2.6rc1 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
@ -3761,6 +3795,8 @@ the first widely used release:
1.0.15 10 10015 10.so.0.1.0.15 1.0.15 10 10015 10.so.0.1.0.15
1.2.5 13 10205 12.so.0.1.2.5 1.2.5 13 10205 12.so.0.1.2.5
1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4
1.0.16rc1-4 10 10016 10.so.0.1.0.16rc1-4
1.2.6rc1-4 13 10206 12.so.0.1.2.6rc1-4
Henceforth the source version will match the shared-library minor Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be and patch numbers; the shared-library major version number will be
@ -3818,7 +3854,7 @@ 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 1.2.6beta4 - July 28, 2004: Libpng version 1.2.6rc1 - August 4, 2004:
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 (glennrp@users.sourceforge.net). Currently maintained by Glenn Randers-Pehrson (glennrp@users.sourceforge.net).
@ -3835,7 +3871,7 @@ 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 version 1.2.6, July 28, 2004, is libpng version 1.2.6, August 4, 2004, is
Copyright (c) 2004 Glenn Randers-Pehrson, and is Copyright (c) 2004 Glenn Randers-Pehrson, and is
distributed according to the same disclaimer and license as libpng-1.2.5 distributed according to the same disclaimer and license as libpng-1.2.5
with the following individuals added to the list of Contributing Authors with the following individuals added to the list of Contributing Authors
@ -3935,7 +3971,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson Glenn Randers-Pehrson
glennrp@users.sourceforge.net glennrp@users.sourceforge.net
July 28, 2004 August 4, 2004
.\" end of man page .\" end of man page

30
libpng.txt
View File

@ -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 1.2.6beta4 - July 28, 2004 libpng version 1.2.6rc1 - August 4, 2004
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<glennrp@users.sourceforge.net> <glennrp@users.sourceforge.net>
Copyright (c) 1998-2004 Glenn Randers-Pehrson Copyright (c) 1998-2004 Glenn Randers-Pehrson
@ -300,6 +300,28 @@ To inform libpng about your function, use
png_set_read_status_fn(png_ptr, read_row_callback); png_set_read_status_fn(png_ptr, read_row_callback);
Width and height limits
The PNG specification allows the width and height of an image to be as
large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
Since very few applications really need to process such large images,
we have imposed an arbitrary 1-million limit on rows and columns.
Larger images will be rejected immediately with a png_error() call. If
you wish to override this limit, you can use
png_set_user_limits(png_ptr, width_max, height_max);
to set your own limits, or use width_max = height_max = 0x7fffffffL
to allow all valid dimensions (libpng may reject some very large images
anyway because of potential buffer overflow conditions).
You should put this statement after you create the PNG structure and
before calling png_read_info(), png_read_png(), or png_process_data().
If you need to retrieve the limits that are being applied, use
width_max = png_get_user_width_max(png_ptr);
height_max = png_get_user_height_max(png_ptr);
Unknown-chunk handling Unknown-chunk handling
Now you get to set the way the library processes unknown chunks in the Now you get to set the way the library processes unknown chunks in the
@ -308,7 +330,7 @@ behavior is that known chunks will be parsed into information in
various info_ptr members; unknown chunks will be discarded. To change various info_ptr members; unknown chunks will be discarded. To change
this, you can call: this, you can call:
png_set_keep_unknown_chunks(png_ptr, info_ptr, keep, png_set_keep_unknown_chunks(png_ptr, keep,
chunk_list, num_chunks); chunk_list, num_chunks);
keep - 0: do not keep keep - 0: do not keep
1: keep only if safe-to-copy 1: keep only if safe-to-copy
@ -2854,13 +2876,13 @@ application:
VII. Y2K Compliance in libpng VII. Y2K Compliance in libpng
July 28, 2004 August 4, 2004
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 1.2.6beta4 are Y2K compliant. It is my belief that earlier upward through 1.2.6rc1 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
View File

@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "July 28, 2004" .TH LIBPNGPF 3 "August 4, 2004"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.6beta4 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.6rc1
(private functions) (private functions)
.SH SYNOPSIS .SH SYNOPSIS
\fB\fB#include <png.h>\fP\fP \fB\fB#include <png.h>\fP\fP

2
png.5
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@ -1,4 +1,4 @@
.TH PNG 5 "July 28, 2004" .TH PNG 5 "August 4, 2004"
.SH NAME .SH NAME
png \- Portable Network Graphics (PNG) format png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION .SH DESCRIPTION

6
png.c
View File

@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions /* png.c - location for general purpose libpng functions
* *
* libpng version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -13,7 +13,7 @@
#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_2_6beta4 Your_png_h_is_not_version_1_2_6beta4; typedef version_1_2_6rc1 Your_png_h_is_not_version_1_2_6rc1;
/* 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. */
@ -678,7 +678,7 @@ png_charp PNGAPI
png_get_copyright(png_structp png_ptr) png_get_copyright(png_structp png_ptr)
{ {
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) "\n libpng version 1.2.6beta4 - July 28, 2004\n\ return ((png_charp) "\n libpng version 1.2.6rc1 - August 4, 2004\n\
Copyright (c) 1998-2004 Glenn Randers-Pehrson\n\ Copyright (c) 1998-2004 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");

47
png.h
View File

@ -1,6 +1,6 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* Copyright (c) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 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.)
@ -8,7 +8,7 @@
* 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 1.2.6beta4 - July 28, 2004: Glenn * libpng versions 0.97, January 1998, through 1.2.6rc1 - August 4, 2004: Glenn
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
* *
* Note about libpng version numbers: * Note about libpng version numbers:
@ -99,6 +99,8 @@
* 1.0.15 10 10015 10.so.0.1.0.15 * 1.0.15 10 10015 10.so.0.1.0.15
* 1.2.5 13 10205 12.so.0.1.2.5 * 1.2.5 13 10205 12.so.0.1.2.5
* 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4 * 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4
* 1.0.16rc1-4 10 10016 10.so.0.1.0.16rc1-4
* 1.2.6rc1-4 13 10206 12.so.0.1.2.6rc1-4
* *
* 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
@ -128,7 +130,7 @@
* 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 version 1.2.6, July 28, 2004, is * libpng version 1.2.6, August 4, 2004, is
* Copyright (c) 2004 Glenn Randers-Pehrson, and is * Copyright (c) 2004 Glenn Randers-Pehrson, and is
* distributed according to the same disclaimer and license as libpng-1.2.5 * distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individuals added to the list of Contributing Authors * with the following individuals added to the list of Contributing Authors
@ -241,13 +243,13 @@
* Y2K compliance in libpng: * Y2K compliance in libpng:
* ========================= * =========================
* *
* July 28, 2004 * August 4, 2004
* *
* 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 1.2.6beta4 are Y2K compliant. It is my belief that earlier * upward through 1.2.6rc1 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
@ -303,9 +305,9 @@
*/ */
/* 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 "1.2.6beta4" #define PNG_LIBPNG_VER_STRING "1.2.6rc1"
#define PNG_HEADER_VERSION_STRING \ #define PNG_HEADER_VERSION_STRING \
" libpng version 1.2.6beta4 - July 28, 2004 (header)\n" " libpng version 1.2.6rc1 - August 4, 2004 (header)\n"
#define PNG_LIBPNG_VER_SONUM 0 #define PNG_LIBPNG_VER_SONUM 0
#define PNG_LIBPNG_VER_DLLNUM %DLLNUM% #define PNG_LIBPNG_VER_DLLNUM %DLLNUM%
@ -317,7 +319,7 @@
/* 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 1
#define PNG_LIBPNG_BUILD_ALPHA 1 #define PNG_LIBPNG_BUILD_ALPHA 1
#define PNG_LIBPNG_BUILD_BETA 2 #define PNG_LIBPNG_BUILD_BETA 2
@ -325,7 +327,7 @@
#define PNG_LIBPNG_BUILD_STABLE 4 #define PNG_LIBPNG_BUILD_STABLE 4
#define PNG_LIBPNG_BUILD_TYPEMASK 7 #define PNG_LIBPNG_BUILD_TYPEMASK 7
#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with STABLE only */ #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. /* Careful here. At one time, Guy wanted to use 082, but that would be octal.
* We must not include leading zeros. * We must not include leading zeros.
@ -1294,16 +1296,22 @@ struct png_struct_def
png_bytep palette_to_index; /* which original index points to this */ png_bytep palette_to_index; /* which original index points to this */
/* palette color */ /* palette color */
#endif #endif
/* New member added in libpng-1.0.16 and 1.2.6 */
/* New members added in libpng-1.0.16 and 1.2.6 */
png_byte compression_type; png_byte compression_type;
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_uint_32 user_width_max;
png_uint_32 user_height_max;
#endif
}; };
/* This triggers a compiler error in png.c, if png.c and png.h /* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number. * do not agree upon the version number.
*/ */
typedef png_structp version_1_2_6beta4; typedef png_structp version_1_2_6rc1;
typedef png_struct FAR * FAR * png_structpp; typedef png_struct FAR * FAR * png_structpp;
@ -2453,8 +2461,19 @@ extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
png_ptr, png_uint_32 strip_mode)); png_ptr, png_uint_32 strip_mode));
#endif #endif
#endif /* PNG_1_0_X */ #endif /* PNG_1_0_X */
/* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
extern PNG_EXPORT(void,png_set_user_limits) PNGARG((png_structp
png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max));
extern PNG_EXPORT(png_uint_32,png_get_user_width_max) PNGARG((png_structp
png_ptr));
extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp
png_ptr));
#endif
/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */ /* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
@ -2598,6 +2617,12 @@ extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
PNG_FLAG_CRC_CRITICAL_MASK) PNG_FLAG_CRC_CRITICAL_MASK)
/* save typing and make code easier to understand */ /* save typing and make code easier to understand */
#define PNG_ROWBYTES(pixel_bits, width) \
((pixel_bits) >= 8 ? \
((width) * (((png_uint_32)(pixel_bits)) >> 3)) : \
(( ((width) * ((png_uint_32)(pixel_bits))) + 7) >> 3) )
#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \ #define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \
abs((int)((c1).green) - (int)((c2).green)) + \ abs((int)((c1).green) - (int)((c2).green)) + \
abs((int)((c1).blue) - (int)((c2).blue))) abs((int)((c1).blue) - (int)((c2).blue)))

2
pngasmrd.h
View File

@ -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 1.2.6beta4 - July 28, 2004 * libpng 1.2.6rc1 - August 4, 2004
* 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) 2002-2004 Glenn Randers-Pehrson * Copyright (c) 2002-2004 Glenn Randers-Pehrson
* *

25
pngconf.h
View File

@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng /* pngconf.h - machine configurable file for libpng
* *
* libpng version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -669,6 +669,25 @@
#endif #endif
#endif /* PNG_1_0_X */ #endif /* PNG_1_0_X */
/* Added at libpng-1.2.6 */
#if !defined(PNG_1_0_X)
#ifndef PNG_SET_USER_LIMITS_SUPPORTED
#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
# define PNG_SET_USER_LIMITS_SUPPORTED
#endif
#endif
#endif /* PNG_1_0_X */
/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
* how large, set these limits to 0x7fffffffL
*/
#ifndef PNG_USER_WIDTH_MAX
# define PNG_USER_WIDTH_MAX 1000000L
#endif
#ifndef PNG_USER_HEIGHT_MAX
# define PNG_USER_HEIGHT_MAX 1000000L
#endif
/* These are currently experimental features, define them if you want */ /* These are currently experimental features, define them if you want */
/* very little testing */ /* very little testing */
@ -683,11 +702,9 @@
/* This is only for PowerPC big-endian and 680x0 systems */ /* This is only for PowerPC big-endian and 680x0 systems */
/* some testing */ /* some testing */
/* /*
#ifdef PNG_READ_SUPPORTED #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
# ifndef PNG_PNG_READ_BIG_ENDIAN_SUPPORTED
# define PNG_READ_BIG_ENDIAN_SUPPORTED # define PNG_READ_BIG_ENDIAN_SUPPORTED
#endif #endif
#endif
*/ */
/* Buggy compilers (e.g., gcc 2.7.2.2) need this */ /* Buggy compilers (e.g., gcc 2.7.2.2) need this */

18
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 version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -35,9 +35,9 @@ png_error(png_structp png_ptr, png_const_charp error_message)
char msg[16]; char msg[16];
if (png_ptr->flags&(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) if (png_ptr->flags&(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
{ {
int offset = 0;
if (*error_message == '#') if (*error_message == '#')
{ {
int offset;
for (offset=1; offset<15; offset++) for (offset=1; offset<15; offset++)
if (*(error_message+offset) == ' ') if (*(error_message+offset) == ' ')
break; break;
@ -190,9 +190,6 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
else else
#endif #endif
fprintf(stderr, "libpng error: %s\n", error_message); fprintf(stderr, "libpng error: %s\n", error_message);
#else
if (error_message)
/* make compiler happy */ ;
#endif #endif
#ifdef PNG_SETJMP_SUPPORTED #ifdef PNG_SETJMP_SUPPORTED
@ -206,10 +203,15 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
longjmp(png_ptr->jmpbuf, 1); longjmp(png_ptr->jmpbuf, 1);
# endif # endif
#else #else
if (png_ptr)
/* make compiler happy */ ; /* make compiler happy */ ;
if (png_ptr)
PNG_ABORT(); PNG_ABORT();
#endif #endif
#ifdef PNG_NO_CONSOLE_IO
/* make compiler happy */ ;
if (&error_message != NULL)
return;
#endif
} }
/* This function is called when there is a warning, but the library thinks /* This function is called when there is a warning, but the library thinks
@ -245,9 +247,11 @@ png_default_warning(png_structp png_ptr, png_const_charp warning_message)
# endif # endif
fprintf(stderr, "libpng warning: %s\n", warning_message); fprintf(stderr, "libpng warning: %s\n", warning_message);
#else #else
/* make compiler happy */ ;
if (warning_message) if (warning_message)
/* appease compiler */ ; return;
#endif #endif
/* make compiler happy */ ;
if (png_ptr) if (png_ptr)
return; return;
} }

8
pnggccrd.c
View File

@ -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 version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation * Copyright (c) 1998, Intel Corporation
@ -428,7 +428,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
{ {
png_debug(2,"mask == 0xff: doing single png_memcpy()\n"); png_debug(2,"mask == 0xff: doing single png_memcpy()\n");
png_memcpy(row, png_ptr->row_buf + 1, png_memcpy(row, png_ptr->row_buf + 1,
(png_size_t)((png_ptr->width * png_ptr->row_info.pixel_depth + 7) >> 3)); (png_size_t)PNG_ROWBYTES(png_ptr->row_info.pixel_depth,png_ptr->width));
} }
else /* (png_combine_row() is never called with mask == 0) */ else /* (png_combine_row() is never called with mask == 0) */
{ {
@ -2733,8 +2733,8 @@ png_do_read_interlace(png_structp png_ptr)
} /* end switch (row_info->pixel_depth) */ } /* end switch (row_info->pixel_depth) */
row_info->width = final_width; row_info->width = final_width;
row_info->rowbytes = ((final_width *
(png_uint_32)row_info->pixel_depth + 7) >> 3); row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,final_width);
} }
} /* end png_do_read_interlace() */ } /* end png_do_read_interlace() */

43
pngget.c
View File

@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct /* pngget.c - retrieval of values from info struct
* *
* libpng 1.2.6beta4 - July 28, 2004 * libpng 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -540,9 +540,6 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
if (png_ptr != NULL && info_ptr != NULL && width != NULL && height != NULL && if (png_ptr != NULL && info_ptr != NULL && width != NULL && height != NULL &&
bit_depth != NULL && color_type != NULL) bit_depth != NULL && color_type != NULL)
{ {
int pixel_depth, channels;
png_uint_32 rowbytes_per_pixel;
png_debug1(1, "in %s retrieval function\n", "IHDR"); png_debug1(1, "in %s retrieval function\n", "IHDR");
*width = info_ptr->width; *width = info_ptr->width;
*height = info_ptr->height; *height = info_ptr->height;
@ -560,23 +557,18 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
*interlace_type = info_ptr->interlace_type; *interlace_type = info_ptr->interlace_type;
/* check for potential overflow of rowbytes */ /* check for potential overflow of rowbytes */
if (*color_type == PNG_COLOR_TYPE_PALETTE)
channels = 1;
else if (*color_type & PNG_COLOR_MASK_COLOR)
channels = 3;
else
channels = 1;
if (*color_type & PNG_COLOR_MASK_ALPHA)
channels++;
pixel_depth = *bit_depth * channels;
rowbytes_per_pixel = (pixel_depth + 7) >> 3;
if (width == 0 || *width > PNG_UINT_31_MAX) if (width == 0 || *width > PNG_UINT_31_MAX)
png_error(png_ptr, "Invalid image width"); png_error(png_ptr, "Invalid image width");
if (height == 0 || *height > PNG_UINT_31_MAX) if (height == 0 || *height > PNG_UINT_31_MAX)
png_error(png_ptr, "Invalid image height"); png_error(png_ptr, "Invalid image height");
if (*width > PNG_UINT_32_MAX/rowbytes_per_pixel - 64) if (info_ptr->width > (PNG_UINT_32_MAX
>> 3) /* 8-byte RGBA pixels */
- 64 /* bigrowbuf hack */
- 1 /* filter byte */
- 7*8 /* rounding of width to multiple of 8 pixels */
- 8) /* extra max_pixel_depth pad */
{ {
png_error(png_ptr, png_warning(png_ptr,
"Width too large for libpng to process image data."); "Width too large for libpng to process image data.");
} }
return (1); return (1);
@ -923,5 +915,20 @@ png_get_mmx_rowbytes_threshold (png_structp png_ptr)
{ {
return (png_uint_32)(png_ptr? png_ptr->mmx_rowbytes_threshold : 0L); return (png_uint_32)(png_ptr? png_ptr->mmx_rowbytes_threshold : 0L);
} }
#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */ #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
#endif /* PNG_1_0_X */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* these functions were added to libpng 1.2.6 */
png_uint_32 PNGAPI
png_get_user_width_max (png_structp png_ptr)
{
return (png_ptr? png_ptr->user_width_max : 0);
}
png_uint_32 PNGAPI
png_get_user_height_max (png_structp png_ptr)
{
return (png_ptr? png_ptr->user_height_max : 0);
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
#endif /* ?PNG_1_0_X */

7
pngmem.c
View File

@ -1,7 +1,7 @@
/* pngmem.c - stub functions for memory allocation /* pngmem.c - stub functions for memory allocation
* *
* libpng version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -423,10 +423,10 @@ png_malloc(png_structp png_ptr, png_uint_32 size)
{ {
png_voidp ret; png_voidp ret;
#ifdef PNG_USER_MEM_SUPPORTED
if (png_ptr == NULL || size == 0) if (png_ptr == NULL || size == 0)
return (NULL); return (NULL);
#ifdef PNG_USER_MEM_SUPPORTED
if(png_ptr->malloc_fn != NULL) if(png_ptr->malloc_fn != NULL)
ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size)); ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
else else
@ -442,6 +442,9 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
png_voidp ret; png_voidp ret;
#endif /* PNG_USER_MEM_SUPPORTED */ #endif /* PNG_USER_MEM_SUPPORTED */
if (png_ptr == NULL || size == 0)
return (NULL);
#ifdef PNG_MAX_MALLOC_64K #ifdef PNG_MAX_MALLOC_64K
if (size > (png_uint_32)65536L) if (size > (png_uint_32)65536L)
{ {

10
pngpread.c
View File

@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode /* pngpread.c - read a png file in push mode
* *
* libpng version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -782,8 +782,8 @@ png_push_process_row(png_structp png_ptr)
png_ptr->row_info.bit_depth = png_ptr->bit_depth; png_ptr->row_info.bit_depth = png_ptr->bit_depth;
png_ptr->row_info.pixel_depth = png_ptr->pixel_depth; png_ptr->row_info.pixel_depth = png_ptr->pixel_depth;
png_ptr->row_info.rowbytes = ((png_ptr->row_info.width * png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
(png_uint_32)png_ptr->row_info.pixel_depth + 7) >> 3); png_ptr->row_info.width);
png_read_filter_row(png_ptr, &(png_ptr->row_info), png_read_filter_row(png_ptr, &(png_ptr->row_info),
png_ptr->row_buf + 1, png_ptr->prev_row + 1, png_ptr->row_buf + 1, png_ptr->prev_row + 1,
@ -1008,8 +1008,8 @@ png_read_push_finish_row(png_structp png_ptr)
png_pass_start[png_ptr->pass]) / png_pass_start[png_ptr->pass]) /
png_pass_inc[png_ptr->pass]; png_pass_inc[png_ptr->pass];
png_ptr->irowbytes = ((png_ptr->iwidth * png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->pixel_depth + 7) >> 3) + 1; png_ptr->iwidth);
if (png_ptr->transformations & PNG_INTERLACE) if (png_ptr->transformations & PNG_INTERLACE)
break; break;

60
pngread.c
View File

@ -1,7 +1,7 @@
/* pngread.c - read a PNG file /* pngread.c - read a PNG file
* *
* libpng 1.2.6beta4 - July 28, 2004 * libpng 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -59,6 +59,12 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#endif #endif
#endif /* PNG_1_0_X */ #endif /* PNG_1_0_X */
/* added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
#endif
#ifdef PNG_SETJMP_SUPPORTED #ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD #ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf)) if (setjmp(jmpbuf))
@ -266,6 +272,12 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof (jmp_buf)); png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof (jmp_buf));
#endif #endif
/* added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
#endif
/* initialize zbuf - compression buffer */ /* initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE; png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
@ -712,8 +724,8 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
png_ptr->row_info.channels = png_ptr->channels; png_ptr->row_info.channels = png_ptr->channels;
png_ptr->row_info.bit_depth = png_ptr->bit_depth; png_ptr->row_info.bit_depth = png_ptr->bit_depth;
png_ptr->row_info.pixel_depth = png_ptr->pixel_depth; png_ptr->row_info.pixel_depth = png_ptr->pixel_depth;
png_ptr->row_info.rowbytes = ((png_ptr->row_info.width * png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
(png_uint_32)png_ptr->row_info.pixel_depth + 7) >> 3); png_ptr->row_info.width);
if(png_ptr->row_buf[0]) if(png_ptr->row_buf[0])
png_read_filter_row(png_ptr, &(png_ptr->row_info), png_read_filter_row(png_ptr, &(png_ptr->row_info),
@ -791,7 +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 * 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 1.2.6beta4 * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.6rc1
*/ */
void PNGAPI void PNGAPI
@ -841,7 +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 * 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 1.2.6beta4 * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.6rc1
*/ */
void PNGAPI void PNGAPI
png_read_image(png_structp png_ptr, png_bytepp image) png_read_image(png_structp png_ptr, png_bytepp image)
@ -1071,8 +1083,8 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
png_structp png_ptr = NULL; png_structp png_ptr = NULL;
png_infop info_ptr = NULL, end_info_ptr = NULL; png_infop info_ptr = NULL, end_info_ptr = NULL;
#ifdef PNG_USER_MEM_SUPPORTED #ifdef PNG_USER_MEM_SUPPORTED
png_free_ptr free_fn = NULL; png_free_ptr free_fn;
png_voidp mem_ptr = NULL; png_voidp mem_ptr;
#endif #endif
png_debug(1, "in png_destroy_read_struct\n"); png_debug(1, "in png_destroy_read_struct\n");
@ -1295,34 +1307,38 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
int row; int row;
#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) #if defined(PNG_READ_INVERT_ALPHA_SUPPORTED)
/* invert the alpha channel from opacity to transparency */ /* invert the alpha channel from opacity to transparency
*/
if (transforms & PNG_TRANSFORM_INVERT_ALPHA) if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
png_set_invert_alpha(png_ptr); png_set_invert_alpha(png_ptr);
#endif #endif
/* The call to png_read_info() gives us all of the information from the /* png_read_info() gives us all of the information from the
* PNG file before the first IDAT (image data chunk). * PNG file before the first IDAT (image data chunk).
*/ */
png_read_info(png_ptr, info_ptr); png_read_info(png_ptr, info_ptr);
if (info_ptr->height > PNG_UINT_32_MAX/png_sizeof(png_bytep))
png_error(png_ptr,"Image is too high to process with png_read_png()");
/* -------------- image transformations start here ------------------- */ /* -------------- image transformations start here ------------------- */
#if defined(PNG_READ_16_TO_8_SUPPORTED) #if defined(PNG_READ_16_TO_8_SUPPORTED)
/* tell libpng to strip 16 bit/color files down to 8 bits/color */ /* tell libpng to strip 16 bit/color files down to 8 bits per color
*/
if (transforms & PNG_TRANSFORM_STRIP_16) if (transforms & PNG_TRANSFORM_STRIP_16)
png_set_strip_16(png_ptr); png_set_strip_16(png_ptr);
#endif #endif
#if defined(PNG_READ_STRIP_ALPHA_SUPPORTED) #if defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
/* Strip alpha bytes from the input data without combining with the /* Strip alpha bytes from the input data without combining with
* background (not recommended). * the background (not recommended).
*/ */
if (transforms & PNG_TRANSFORM_STRIP_ALPHA) if (transforms & PNG_TRANSFORM_STRIP_ALPHA)
png_set_strip_alpha(png_ptr); png_set_strip_alpha(png_ptr);
#endif #endif
#if defined(PNG_READ_PACK_SUPPORTED) && !defined(PNG_READ_EXPAND_SUPPORTED) #if defined(PNG_READ_PACK_SUPPORTED) && !defined(PNG_READ_EXPAND_SUPPORTED)
/* Extract multiple pixels with bit depths of 1, 2, and 4 from a single /* Extract multiple pixels with bit depths of 1, 2, or 4 from a single
* byte into separate bytes (useful for paletted and grayscale images). * byte into separate bytes (useful for paletted and grayscale images).
*/ */
if (transforms & PNG_TRANSFORM_PACKING) if (transforms & PNG_TRANSFORM_PACKING)
@ -1331,7 +1347,8 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
#if defined(PNG_READ_PACKSWAP_SUPPORTED) #if defined(PNG_READ_PACKSWAP_SUPPORTED)
/* Change the order of packed pixels to least significant bit first /* Change the order of packed pixels to least significant bit first
* (not useful if you are using png_set_packing). */ * (not useful if you are using png_set_packing).
*/
if (transforms & PNG_TRANSFORM_PACKSWAP) if (transforms & PNG_TRANSFORM_PACKSWAP)
png_set_packswap(png_ptr); png_set_packswap(png_ptr);
#endif #endif
@ -1349,10 +1366,12 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
png_set_expand(png_ptr); png_set_expand(png_ptr);
#endif #endif
/* We don't handle background color or gamma transformation or dithering. */ /* We don't handle background color or gamma transformation or dithering.
*/
#if defined(PNG_READ_INVERT_SUPPORTED) #if defined(PNG_READ_INVERT_SUPPORTED)
/* invert monochrome files to have 0 as white and 1 as black */ /* invert monochrome files to have 0 as white and 1 as black
*/
if (transforms & PNG_TRANSFORM_INVERT_MONO) if (transforms & PNG_TRANSFORM_INVERT_MONO)
png_set_invert_mono(png_ptr); png_set_invert_mono(png_ptr);
#endif #endif
@ -1373,19 +1392,22 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
#endif #endif
#if defined(PNG_READ_BGR_SUPPORTED) #if defined(PNG_READ_BGR_SUPPORTED)
/* flip the RGB pixels to BGR (or RGBA to BGRA) */ /* flip the RGB pixels to BGR (or RGBA to BGRA)
*/
if (transforms & PNG_TRANSFORM_BGR) if (transforms & PNG_TRANSFORM_BGR)
png_set_bgr(png_ptr); png_set_bgr(png_ptr);
#endif #endif
#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) #if defined(PNG_READ_SWAP_ALPHA_SUPPORTED)
/* swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */ /* swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR)
*/
if (transforms & PNG_TRANSFORM_SWAP_ALPHA) if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
png_set_swap_alpha(png_ptr); png_set_swap_alpha(png_ptr);
#endif #endif
#if defined(PNG_READ_SWAP_SUPPORTED) #if defined(PNG_READ_SWAP_SUPPORTED)
/* swap bytes of 16 bit files to least significant byte first */ /* swap bytes of 16 bit files to least significant byte first
*/
if (transforms & PNG_TRANSFORM_SWAP_ENDIAN) if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
png_set_swap(png_ptr); png_set_swap(png_ptr);
#endif #endif

2
pngrio.c
View File

@ -1,7 +1,7 @@
/* pngrio.c - functions for data input /* pngrio.c - functions for data input
* *
* libpng 1.2.6beta4 - July 28, 2004 * libpng 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

31
pngrtran.c
View File

@ -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 version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -1151,7 +1151,8 @@ defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->pixel_depth = (png_byte)(info_ptr->channels *
info_ptr->bit_depth); info_ptr->bit_depth);
info_ptr->rowbytes = ((info_ptr->width * info_ptr->pixel_depth + 7) >> 3);
info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth,info_ptr->width);
#if !defined(PNG_READ_EXPAND_SUPPORTED) #if !defined(PNG_READ_EXPAND_SUPPORTED)
if(png_ptr) if(png_ptr)
@ -1382,8 +1383,8 @@ From Andreas Dilger e-mail to png-implement, 26 March 1998:
#endif #endif
png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth * png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth *
png_ptr->row_info.channels); png_ptr->row_info.channels);
png_ptr->row_info.rowbytes = (png_ptr->row_info.width * png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
png_ptr->row_info.pixel_depth+7)>>3; png_ptr->row_info.width);
} }
#endif #endif
@ -2089,8 +2090,7 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
row_info->color_type |= PNG_COLOR_MASK_COLOR; row_info->color_type |= PNG_COLOR_MASK_COLOR;
row_info->pixel_depth = (png_byte)(row_info->channels * row_info->pixel_depth = (png_byte)(row_info->channels *
row_info->bit_depth); row_info->bit_depth);
row_info->rowbytes = ((row_width * row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
row_info->pixel_depth + 7) >> 3);
} }
} }
#endif #endif
@ -2343,8 +2343,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
row_info->color_type &= ~PNG_COLOR_MASK_COLOR; row_info->color_type &= ~PNG_COLOR_MASK_COLOR;
row_info->pixel_depth = (png_byte)(row_info->channels * row_info->pixel_depth = (png_byte)(row_info->channels *
row_info->bit_depth); row_info->bit_depth);
row_info->rowbytes = ((row_width * row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
row_info->pixel_depth + 7) >> 3);
} }
return rgb_error; return rgb_error;
} }
@ -3262,8 +3261,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
row_info->channels--; row_info->channels--;
row_info->pixel_depth = (png_byte)(row_info->channels * row_info->pixel_depth = (png_byte)(row_info->channels *
row_info->bit_depth); row_info->bit_depth);
row_info->rowbytes = ((row_width * row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
row_info->pixel_depth + 7) >> 3);
} }
} }
} }
@ -3737,8 +3735,8 @@ png_do_expand(png_row_infop row_info, png_bytep row,
row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA; row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
row_info->channels = 2; row_info->channels = 2;
row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1); row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);
row_info->rowbytes = row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
((row_width * row_info->pixel_depth) >> 3); row_width);
} }
} }
else if (row_info->color_type == PNG_COLOR_TYPE_RGB && trans_value) else if (row_info->color_type == PNG_COLOR_TYPE_RGB && trans_value)
@ -3792,8 +3790,7 @@ png_do_expand(png_row_infop row_info, png_bytep row,
row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA; row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
row_info->channels = 4; row_info->channels = 4;
row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2); row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2);
row_info->rowbytes = row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
((row_width * row_info->pixel_depth) >> 3);
} }
} }
} }
@ -3846,8 +3843,7 @@ png_do_dither(png_row_infop row_info, png_bytep row,
row_info->color_type = PNG_COLOR_TYPE_PALETTE; row_info->color_type = PNG_COLOR_TYPE_PALETTE;
row_info->channels = 1; row_info->channels = 1;
row_info->pixel_depth = row_info->bit_depth; row_info->pixel_depth = row_info->bit_depth;
row_info->rowbytes = row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
((row_width * row_info->pixel_depth + 7) >> 3);
} }
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA && else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
palette_lookup != NULL && row_info->bit_depth == 8) palette_lookup != NULL && row_info->bit_depth == 8)
@ -3876,8 +3872,7 @@ png_do_dither(png_row_infop row_info, png_bytep row,
row_info->color_type = PNG_COLOR_TYPE_PALETTE; row_info->color_type = PNG_COLOR_TYPE_PALETTE;
row_info->channels = 1; row_info->channels = 1;
row_info->pixel_depth = row_info->bit_depth; row_info->pixel_depth = row_info->bit_depth;
row_info->rowbytes = row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
((row_width * row_info->pixel_depth + 7) >> 3);
} }
else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE && else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
dither_lookup && row_info->bit_depth == 8) dither_lookup && row_info->bit_depth == 8)

134
pngrutil.c
View File

@ -1,6 +1,6 @@
/* pngrutil.c - utilities to read a PNG file /* pngrutil.c - utilities to read a PNG file
* *
* libpng version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -394,8 +394,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* set up other useful info */ /* set up other useful info */
png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth * png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth *
png_ptr->channels); png_ptr->channels);
png_ptr->rowbytes = ((png_ptr->width * png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,png_ptr->width);
(png_uint_32)png_ptr->pixel_depth + 7) >> 3);
png_debug1(3,"bit_depth = %d\n", png_ptr->bit_depth); png_debug1(3,"bit_depth = %d\n", png_ptr->bit_depth);
png_debug1(3,"channels = %d\n", png_ptr->channels); png_debug1(3,"channels = %d\n", png_ptr->channels);
png_debug1(3,"rowbytes = %lu\n", png_ptr->rowbytes); png_debug1(3,"rowbytes = %lu\n", png_ptr->rowbytes);
@ -550,8 +549,6 @@ png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (!(png_ptr->mode & PNG_HAVE_IHDR) || !(png_ptr->mode & PNG_HAVE_IDAT)) if (!(png_ptr->mode & PNG_HAVE_IHDR) || !(png_ptr->mode & PNG_HAVE_IDAT))
{ {
png_error(png_ptr, "No image in file"); png_error(png_ptr, "No image in file");
info_ptr = info_ptr; /* quiet compiler warnings about unused info_ptr */
} }
png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND); png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND);
@ -561,6 +558,9 @@ png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_warning(png_ptr, "Incorrect IEND chunk length"); png_warning(png_ptr, "Incorrect IEND chunk length");
} }
png_crc_finish(png_ptr, length); png_crc_finish(png_ptr, length);
if (&info_ptr == NULL) /* quiet compiler warnings about unused info_ptr */
return;
} }
#if defined(PNG_READ_gAMA_SUPPORTED) #if defined(PNG_READ_gAMA_SUPPORTED)
@ -587,7 +587,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* Should be an error, but we can cope with it */ /* Should be an error, but we can cope with it */
png_warning(png_ptr, "Out of place gAMA chunk"); png_warning(png_ptr, "Out of place gAMA chunk");
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA) if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
#if defined(PNG_READ_sRGB_SUPPORTED) #if defined(PNG_READ_sRGB_SUPPORTED)
&& !(info_ptr->valid & PNG_INFO_sRGB) && !(info_ptr->valid & PNG_INFO_sRGB)
#endif #endif
@ -668,7 +668,7 @@ png_handle_sBIT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* Should be an error, but we can cope with it */ /* Should be an error, but we can cope with it */
png_warning(png_ptr, "Out of place sBIT chunk"); png_warning(png_ptr, "Out of place sBIT chunk");
} }
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)) if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT))
{ {
png_warning(png_ptr, "Duplicate sBIT chunk"); png_warning(png_ptr, "Duplicate sBIT chunk");
png_crc_finish(png_ptr, length); png_crc_finish(png_ptr, length);
@ -737,7 +737,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* Should be an error, but we can cope with it */ /* Should be an error, but we can cope with it */
png_warning(png_ptr, "Missing PLTE before cHRM"); png_warning(png_ptr, "Missing PLTE before cHRM");
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM) if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)
#if defined(PNG_READ_sRGB_SUPPORTED) #if defined(PNG_READ_sRGB_SUPPORTED)
&& !(info_ptr->valid & PNG_INFO_sRGB) && !(info_ptr->valid & PNG_INFO_sRGB)
#endif #endif
@ -899,7 +899,7 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* Should be an error, but we can cope with it */ /* Should be an error, but we can cope with it */
png_warning(png_ptr, "Out of place sRGB chunk"); png_warning(png_ptr, "Out of place sRGB chunk");
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)) if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB))
{ {
png_warning(png_ptr, "Duplicate sRGB chunk"); png_warning(png_ptr, "Duplicate sRGB chunk");
png_crc_finish(png_ptr, length); png_crc_finish(png_ptr, length);
@ -1002,7 +1002,7 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* Should be an error, but we can cope with it */ /* Should be an error, but we can cope with it */
png_warning(png_ptr, "Out of place iCCP chunk"); png_warning(png_ptr, "Out of place iCCP chunk");
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)) if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP))
{ {
png_warning(png_ptr, "Duplicate iCCP chunk"); png_warning(png_ptr, "Duplicate iCCP chunk");
png_crc_finish(png_ptr, length); png_crc_finish(png_ptr, length);
@ -1160,8 +1160,9 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
return; return;
} }
new_palette.nentries = data_length / entry_size; new_palette.nentries = (png_uint_32) (data_length / entry_size);
if (new_palette.nentries > PNG_SIZE_MAX / png_sizeof(png_sPLT_entry)) if ((png_uint_32) new_palette.nentries > (png_uint_32) (PNG_SIZE_MAX /
png_sizeof(png_sPLT_entry)))
{ {
png_warning(png_ptr, "sPLT chunk too long"); png_warning(png_ptr, "sPLT chunk too long");
return; return;
@ -1251,49 +1252,9 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
return; return;
} }
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
{ {
if (!(png_ptr->mode & PNG_HAVE_PLTE)) png_byte buf[2];
{
/* Should be an error, but we can cope with it */
png_warning(png_ptr, "Missing PLTE before tRNS");
}
else if (length > (png_uint_32)png_ptr->num_palette)
{
png_warning(png_ptr, "Incorrect tRNS chunk length");
png_crc_finish(png_ptr, length);
return;
}
if (length == 0)
{
png_warning(png_ptr, "Zero length tRNS chunk");
png_crc_finish(png_ptr, length);
return;
}
png_crc_read(png_ptr, readbuf, (png_size_t)length);
png_ptr->num_trans = (png_uint_16)length;
}
else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
{
png_byte buf[6];
if (length != 6)
{
png_warning(png_ptr, "Incorrect tRNS chunk length");
png_crc_finish(png_ptr, length);
return;
}
png_crc_read(png_ptr, buf, (png_size_t)length);
png_ptr->num_trans = 1;
png_ptr->trans_values.red = png_get_uint_16(buf);
png_ptr->trans_values.green = png_get_uint_16(buf + 2);
png_ptr->trans_values.blue = png_get_uint_16(buf + 4);
}
else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
{
png_byte buf[6];
if (length != 2) if (length != 2)
{ {
@ -1306,6 +1267,45 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->num_trans = 1; png_ptr->num_trans = 1;
png_ptr->trans_values.gray = png_get_uint_16(buf); png_ptr->trans_values.gray = png_get_uint_16(buf);
} }
else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
{
png_byte buf[6];
if (length != 6)
{
png_warning(png_ptr, "Incorrect tRNS chunk length");
png_crc_finish(png_ptr, length);
return;
}
png_crc_read(png_ptr, buf, (png_size_t)length);
png_ptr->num_trans = 1;
png_ptr->trans_values.red = png_get_uint_16(buf);
png_ptr->trans_values.green = png_get_uint_16(buf + 2);
png_ptr->trans_values.blue = png_get_uint_16(buf + 4);
}
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (!(png_ptr->mode & PNG_HAVE_PLTE))
{
/* Should be an error, but we can cope with it. */
png_warning(png_ptr, "Missing PLTE before tRNS");
}
if (length > (png_uint_32)png_ptr->num_palette ||
length > PNG_MAX_PALETTE_LENGTH)
{
png_warning(png_ptr, "Incorrect tRNS chunk length");
png_crc_finish(png_ptr, length);
return;
}
if (length == 0)
{
png_warning(png_ptr, "Zero length tRNS chunk");
png_crc_finish(png_ptr, length);
return;
}
png_crc_read(png_ptr, readbuf, (png_size_t)length);
png_ptr->num_trans = (png_uint_16)length;
}
else else
{ {
png_warning(png_ptr, "tRNS chunk not allowed with alpha channel"); png_warning(png_ptr, "tRNS chunk not allowed with alpha channel");
@ -1441,7 +1441,8 @@ png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
} }
num = length / 2 ; num = length / 2 ;
if (num != png_ptr->num_palette || num > PNG_MAX_PALETTE_LENGTH) if (num != (unsigned int) png_ptr->num_palette || num >
(unsigned int) PNG_MAX_PALETTE_LENGTH)
{ {
png_warning(png_ptr, "Incorrect hIST chunk length"); png_warning(png_ptr, "Incorrect hIST chunk length");
png_crc_finish(png_ptr, length); png_crc_finish(png_ptr, length);
@ -2213,7 +2214,8 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_crc_finish(png_ptr, skip); png_crc_finish(png_ptr, skip);
#if !defined(PNG_READ_USER_CHUNKS_SUPPORTED) #if !defined(PNG_READ_USER_CHUNKS_SUPPORTED)
info_ptr = info_ptr; /* quiet compiler warnings about unused info_ptr */ if (&info_ptr == NULL) /* quiet compiler warnings about unused info_ptr */
return;
#endif #endif
} }
@ -2254,8 +2256,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
if (mask == 0xff) if (mask == 0xff)
{ {
png_memcpy(row, png_ptr->row_buf + 1, png_memcpy(row, png_ptr->row_buf + 1,
(png_size_t)((png_ptr->width * PNG_ROWBYTES(png_ptr->row_info.pixel_depth, png_ptr->width));
png_ptr->row_info.pixel_depth + 7) >> 3));
} }
else else
{ {
@ -2670,11 +2671,11 @@ png_do_read_interlace(png_structp png_ptr)
} }
} }
row_info->width = final_width; row_info->width = final_width;
row_info->rowbytes = ((final_width * row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,final_width);
(png_uint_32)row_info->pixel_depth + 7) >> 3);
} }
#if !defined(PNG_READ_PACKSWAP_SUPPORTED) #if !defined(PNG_READ_PACKSWAP_SUPPORTED)
transformations = transformations; /* silence compiler warning */ if (&transformations == NULL) /* silence compiler warning */
return;
#endif #endif
} }
#endif /* !PNG_HAVE_ASSEMBLER_READ_INTERLACE */ #endif /* !PNG_HAVE_ASSEMBLER_READ_INTERLACE */
@ -2842,8 +2843,9 @@ png_read_finish_row(png_structp png_ptr)
png_pass_inc[png_ptr->pass] - 1 - png_pass_inc[png_ptr->pass] - 1 -
png_pass_start[png_ptr->pass]) / png_pass_start[png_ptr->pass]) /
png_pass_inc[png_ptr->pass]; png_pass_inc[png_ptr->pass];
png_ptr->irowbytes = ((png_ptr->iwidth *
(png_uint_32)png_ptr->pixel_depth + 7) >> 3) +1; png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1;
if (!(png_ptr->transformations & PNG_INTERLACE)) if (!(png_ptr->transformations & PNG_INTERLACE))
{ {
@ -2969,8 +2971,8 @@ png_read_start_row(png_structp png_ptr)
png_pass_start[png_ptr->pass]) / png_pass_start[png_ptr->pass]) /
png_pass_inc[png_ptr->pass]; png_pass_inc[png_ptr->pass];
row_bytes = ((png_ptr->iwidth * row_bytes = PNG_ROWBYTES(png_ptr->pixel_depth,png_ptr->iwidth) + 1;
(png_uint_32)png_ptr->pixel_depth + 7) >> 3) +1;
png_ptr->irowbytes = (png_size_t)row_bytes; png_ptr->irowbytes = (png_size_t)row_bytes;
if((png_uint_32)png_ptr->irowbytes != row_bytes) if((png_uint_32)png_ptr->irowbytes != row_bytes)
png_error(png_ptr, "Rowbytes overflow in png_read_start_row"); png_error(png_ptr, "Rowbytes overflow in png_read_start_row");
@ -3088,7 +3090,7 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7)); row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7));
/* calculate the maximum bytes needed, adding a byte and a pixel /* calculate the maximum bytes needed, adding a byte and a pixel
for safety's sake */ for safety's sake */
row_bytes = ((row_bytes * (png_uint_32)max_pixel_depth + 7) >> 3) + row_bytes = PNG_ROWBYTES(max_pixel_depth,row_bytes) +
1 + ((max_pixel_depth + 7) >> 3); 1 + ((max_pixel_depth + 7) >> 3);
#ifdef PNG_MAX_MALLOC_64K #ifdef PNG_MAX_MALLOC_64K
if (row_bytes > (png_uint_32)65536L) if (row_bytes > (png_uint_32)65536L)

49
pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct /* pngset.c - storage of image information into info struct
* *
* libpng 1.2.6beta4 - July 28, 2004 * libpng 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -247,7 +247,6 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
int color_type, int interlace_type, int compression_type, int color_type, int interlace_type, int compression_type,
int filter_type) int filter_type)
{ {
int rowbytes_per_pixel;
png_debug1(1, "in %s storage function\n", "IHDR"); png_debug1(1, "in %s storage function\n", "IHDR");
if (png_ptr == NULL || info_ptr == NULL) if (png_ptr == NULL || info_ptr == NULL)
return; return;
@ -255,8 +254,22 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
/* check for width and height valid values */ /* check for width and height valid values */
if (width == 0 || height == 0) if (width == 0 || height == 0)
png_error(png_ptr, "Image width or height is zero in IHDR"); png_error(png_ptr, "Image width or height is zero in IHDR");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (width > png_ptr->user_width_max || height > png_ptr->user_height_max)
png_error(png_ptr, "image size exceeds user limits in IHDR");
#else
if (width > PNG_USER_WIDTH_MAX || height > PNG_USER_HEIGHT_MAX)
png_error(png_ptr, "image size exceeds user limits in IHDR");
#endif
if (width > PNG_UINT_31_MAX || height > PNG_UINT_31_MAX) if (width > PNG_UINT_31_MAX || height > PNG_UINT_31_MAX)
png_error(png_ptr, "Invalid image size in IHDR"); png_error(png_ptr, "Invalid image size in IHDR");
if ( width > (PNG_UINT_32_MAX
>> 3) /* 8-byte RGBA pixels */
- 64 /* bigrowbuf hack */
- 1 /* filter byte */
- 7*8 /* rounding of width to multiple of 8 pixels */
- 8) /* extra max_pixel_depth pad */
png_warning(png_ptr, "Width is too large for libpng to process pixels");
/* check other values */ /* check other values */
if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
@ -324,16 +337,16 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
info_ptr->channels++; info_ptr->channels++;
info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth); info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
/* check for overflow */ /* check for potential overflow */
rowbytes_per_pixel = (info_ptr->pixel_depth + 7) >> 3; if ( width > (PNG_UINT_32_MAX
if ( width > PNG_UINT_32_MAX/rowbytes_per_pixel - 64) >> 3) /* 8-byte RGBA pixels */
{ - 64 /* bigrowbuf hack */
png_warning(png_ptr, - 1 /* filter byte */
"Width too large to process image data; rowbytes will overflow."); - 7*8 /* rounding of width to multiple of 8 pixels */
- 8) /* extra max_pixel_depth pad */
info_ptr->rowbytes = (png_size_t)0; info_ptr->rowbytes = (png_size_t)0;
}
else else
info_ptr->rowbytes = (info_ptr->width * info_ptr->pixel_depth + 7) >> 3; info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth,width);
} }
#if defined(PNG_oFFs_SUPPORTED) #if defined(PNG_oFFs_SUPPORTED)
@ -1187,4 +1200,20 @@ png_set_mmx_thresholds (png_structp png_ptr,
png_ptr->mmx_rowbytes_threshold = mmx_rowbytes_threshold; png_ptr->mmx_rowbytes_threshold = mmx_rowbytes_threshold;
} }
#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* this function was added to libpng 1.2.6 */
void PNGAPI
png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
png_uint_32 user_height_max)
{
/* Images with dimensions larger than these limits will be
* rejected by png_set_IHDR(). To accept any PNG datastream
* regardless of dimensions, set both limits to 0x7ffffffL.
*/
png_ptr->user_width_max = user_width_max;
png_ptr->user_height_max = user_height_max;
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
#endif /* ?PNG_1_0_X */ #endif /* ?PNG_1_0_X */

13
pngtest.c
View File

@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng /* pngtest.c - a simple test program to test libpng
* *
* libpng 1.2.6beta4 - July 28, 2004 * libpng 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -519,6 +519,12 @@ png_debug_malloc(png_structp png_ptr, png_uint_32 size)
if (current_allocation > maximum_allocation) if (current_allocation > maximum_allocation)
maximum_allocation = current_allocation; maximum_allocation = current_allocation;
pinfo->pointer = (png_voidp)png_malloc_default(png_ptr, size); pinfo->pointer = (png_voidp)png_malloc_default(png_ptr, size);
if (size != 0 && pinfo->pointer == NULL)
{
current_allocation -= size;
total_allocation -= size;
png_error(png_ptr,"out of memory in pngtest->png_malloc_default.\n");
}
pinfo->next = pinformation; pinfo->next = pinformation;
pinformation = pinfo; pinformation = pinfo;
/* Make sure the caller isn't assuming zeroed memory. */ /* Make sure the caller isn't assuming zeroed memory. */
@ -1308,9 +1314,6 @@ main(int argc, char *argv[])
PNG_HEADER_VERSION_STRING); PNG_HEADER_VERSION_STRING);
fprintf(STDERR," png_sizeof(png_struct)=%ld, png_sizeof(png_info)=%ld\n", fprintf(STDERR," png_sizeof(png_struct)=%ld, png_sizeof(png_info)=%ld\n",
(long)png_sizeof(png_struct), (long)png_sizeof(png_info)); (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
fprintf(STDERR," PNG_UINT_31_MAX=%lu, PNG_UINT_32_MAX=%lu\n",
PNG_UINT_31_MAX, PNG_UINT_32_MAX);
fprintf(STDERR," PNG_SIZE_MAX=%u\n",PNG_SIZE_MAX);
/* Do some consistency checking on the memory allocation settings, I'm /* Do some consistency checking on the memory allocation settings, I'm
not sure this matters, but it is nice to know, the first of these not sure this matters, but it is nice to know, the first of these
@ -1541,4 +1544,4 @@ 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_2_6beta4 your_png_h_is_not_version_1_2_6beta4; typedef version_1_2_6rc1 your_png_h_is_not_version_1_2_6rc1;

BIN
pngtest.png
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Binary file not shown.
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 8.4 KiB

After

Width:  |  Height:  |  Size: 8.4 KiB

2
pngtrans.c
View File

@ -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 1.2.6beta4 - July 28, 2004 * libpng 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

9
pngvcrd.c
View File

@ -2,7 +2,7 @@
* *
* For Intel x86 CPU and Microsoft Visual C++ compiler * For Intel x86 CPU and Microsoft Visual C++ compiler
* *
* libpng version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation * Copyright (c) 1998, Intel Corporation
@ -125,7 +125,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
if (mask == 0xff) if (mask == 0xff)
{ {
png_memcpy(row, png_ptr->row_buf + 1, png_memcpy(row, png_ptr->row_buf + 1,
(png_size_t)((png_ptr->width * png_ptr->row_info.pixel_depth + 7) >> 3)); (png_size_t)PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
png_ptr->width));
} }
/* GRR: add "else if (mask == 0)" case? /* GRR: add "else if (mask == 0)" case?
* or does png_combine_row() not even get called in that case? */ * or does png_combine_row() not even get called in that case? */
@ -1902,8 +1903,8 @@ loop4_pass4:
} /* end switch (row_info->pixel_depth) */ } /* end switch (row_info->pixel_depth) */
row_info->width = final_width; row_info->width = final_width;
row_info->rowbytes = ((final_width *
(png_uint_32)row_info->pixel_depth + 7) >> 3); row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,final_width);
} }
} }

2
pngwio.c
View File

@ -1,7 +1,7 @@
/* pngwio.c - functions for data output /* pngwio.c - functions for data output
* *
* libpng 1.2.6beta4 - July 28, 2004 * libpng 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

18
pngwrite.c
View File

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file /* pngwrite.c - general routines to write a PNG file
* *
* libpng 1.2.6beta4 - July 28, 2004 * libpng 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -458,6 +458,12 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#endif #endif
#endif /* PNG_1_0_X */ #endif /* PNG_1_0_X */
/* added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
#endif
#ifdef PNG_SETJMP_SUPPORTED #ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD #ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf)) if (setjmp(jmpbuf))
@ -641,6 +647,12 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
/* reset all variables to 0 */ /* reset all variables to 0 */
png_memset(png_ptr, 0, png_sizeof (png_struct)); png_memset(png_ptr, 0, png_sizeof (png_struct));
/* added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
#endif
#if !defined(PNG_1_0_X) #if !defined(PNG_1_0_X)
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED #ifdef PNG_ASSEMBLER_CODE_SUPPORTED
png_init_mmx_flags(png_ptr); /* 1.2.0 addition */ png_init_mmx_flags(png_ptr); /* 1.2.0 addition */
@ -829,8 +841,8 @@ png_write_row(png_structp png_ptr, png_bytep row)
png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth * png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth *
png_ptr->row_info.channels); png_ptr->row_info.channels);
png_ptr->row_info.rowbytes = ((png_ptr->row_info.width * png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
(png_uint_32)png_ptr->row_info.pixel_depth + 7) >> 3); png_ptr->row_info.width);
png_debug1(3, "row_info->color_type = %d\n", png_ptr->row_info.color_type); png_debug1(3, "row_info->color_type = %d\n", png_ptr->row_info.color_type);
png_debug1(3, "row_info->width = %lu\n", png_ptr->row_info.width); png_debug1(3, "row_info->width = %lu\n", png_ptr->row_info.width);

6
pngwtran.c
View File

@ -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 version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -195,8 +195,8 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
} }
row_info->bit_depth = (png_byte)bit_depth; row_info->bit_depth = (png_byte)bit_depth;
row_info->pixel_depth = (png_byte)(bit_depth * row_info->channels); row_info->pixel_depth = (png_byte)(bit_depth * row_info->channels);
row_info->rowbytes = row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
((row_info->width * row_info->pixel_depth + 7) >> 3); row_info->width);
} }
} }
#endif #endif

21
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 version 1.2.6beta4 - July 28, 2004 * libpng version 1.2.6rc1 - August 4, 2004
* 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) 1998-2004 Glenn Randers-Pehrson * Copyright (c) 1998-2004 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -473,7 +473,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
png_ptr->height = height; png_ptr->height = height;
png_ptr->pixel_depth = (png_byte)(bit_depth * png_ptr->channels); png_ptr->pixel_depth = (png_byte)(bit_depth * png_ptr->channels);
png_ptr->rowbytes = ((width * (png_size_t)png_ptr->pixel_depth + 7) >> 3); png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width);
/* set the usr info, so any transformations can modify it */ /* set the usr info, so any transformations can modify it */
png_ptr->usr_width = png_ptr->width; png_ptr->usr_width = png_ptr->width;
png_ptr->usr_bit_depth = png_ptr->bit_depth; png_ptr->usr_bit_depth = png_ptr->bit_depth;
@ -617,7 +617,7 @@ png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
png_ptr->height < 16384 && png_ptr->width < 16384) png_ptr->height < 16384 && png_ptr->width < 16384)
{ {
png_uint_32 uncompressed_idat_size = png_ptr->height * png_uint_32 uncompressed_idat_size = png_ptr->height *
((png_ptr->width * (PNG_ROWBYTES(png_ptr->channels*png_ptr->bit_depth,
png_ptr->channels * png_ptr->bit_depth + 15) >> 3); png_ptr->channels * png_ptr->bit_depth + 15) >> 3);
unsigned int z_cinfo = z_cmf >> 4; unsigned int z_cinfo = z_cmf >> 4;
unsigned int half_z_window_size = 1 << (z_cinfo + 7); unsigned int half_z_window_size = 1 << (z_cinfo + 7);
@ -1691,8 +1691,8 @@ png_write_start_row(png_structp png_ptr)
png_size_t buf_size; png_size_t buf_size;
png_debug(1, "in png_write_start_row\n"); png_debug(1, "in png_write_start_row\n");
buf_size = (png_size_t)(((png_ptr->width * png_ptr->usr_channels * buf_size = (png_size_t)(PNG_ROWBYTES(
png_ptr->usr_bit_depth + 7) >> 3) + 1); png_ptr->usr_channels*png_ptr->usr_bit_depth,png_ptr->width)+1);
/* set up row buffer */ /* set up row buffer */
png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, (png_uint_32)buf_size); png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, (png_uint_32)buf_size);
@ -1828,9 +1828,8 @@ png_write_finish_row(png_structp png_ptr)
{ {
if (png_ptr->prev_row != NULL) if (png_ptr->prev_row != NULL)
png_memset(png_ptr->prev_row, 0, png_memset(png_ptr->prev_row, 0,
(png_size_t) (((png_uint_32)png_ptr->usr_channels * (png_size_t)(PNG_ROWBYTES(png_ptr->usr_channels*
(png_uint_32)png_ptr->usr_bit_depth * png_ptr->usr_bit_depth,png_ptr->width))+1);
png_ptr->width + 7) >> 3) + 1);
return; return;
} }
} }
@ -2037,8 +2036,8 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
png_pass_inc[pass] - 1 - png_pass_inc[pass] - 1 -
png_pass_start[pass]) / png_pass_start[pass]) /
png_pass_inc[pass]; png_pass_inc[pass];
row_info->rowbytes = ((row_info->width * row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
row_info->pixel_depth + 7) >> 3); row_info->width);
} }
} }
#endif #endif
@ -2064,7 +2063,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
png_debug(1, "in png_write_find_filter\n"); png_debug(1, "in png_write_find_filter\n");
/* find out how many bytes offset each pixel is */ /* find out how many bytes offset each pixel is */
bpp = (row_info->pixel_depth + 7) / 8; bpp = (row_info->pixel_depth + 7) >> 3;
prev_row = png_ptr->prev_row; prev_row = png_ptr->prev_row;
best_row = row_buf = png_ptr->row_buf; best_row = row_buf = png_ptr->row_buf;

4
projects/netware.txt
View File

@ -1,6 +1,6 @@
A set of project files is available for Netware. Get A set of project files is available for Netware. Get
libpng-1.2.6beta4-project-netware.zip from a libpng distribution libpng-1.2.5-project-netware.zip from a libpng distribution
site such as http://libpng.sourceforge.net site such as http://libpng.sourceforge.net
Put the zip file in this directory (projects) and then run Put the zip file in this directory (projects) and then run
"unzip -a libpng-1.2.6beta4-project-netware.zip" "unzip -a libpng-1.2.5-project-netware.zip"

4
projects/wince.txt
View File

@ -1,6 +1,6 @@
A set of project files is available for WinCE. Get A set of project files is available for WinCE. Get
libpng-1.2.6beta4-project-wince.zip from a libpng distribution libpng-1.2.5-project-wince.zip from a libpng distribution
site such as http://libpng.sourceforge.net site such as http://libpng.sourceforge.net
Put the zip file in this directory (projects) and then run Put the zip file in this directory (projects) and then run
"unzip -a libpng-1.2.6beta4-project-wince.zip" "unzip -a libpng-1.2.5-project-wince.zip"

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

@ -8,7 +8,7 @@
# Modeled after libxml-config. # Modeled after libxml-config.
version=1.2.5 version=1.2.6rc1
prefix="" prefix=""
libdir="" libdir=""
libs="" libs=""

2
scripts/libpng.pc.in
View File

@ -6,6 +6,6 @@ includedir=${exec_prefix}/include
Name: libpng12 Name: libpng12
Description: Loads and saves PNG files Description: Loads and saves PNG files
Version: 1.2.5 Version: 1.2.6rc1
Libs: -L${libdir} -lpng12 -lz -lm Libs: -L${libdir} -lpng12 -lz -lm
Cflags: -I${includedir}/libpng12 Cflags: -I${includedir}/libpng12

2
scripts/makefile.32sunu
View File

@ -33,7 +33,7 @@ RANLIB=echo
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include INCPATH=$(prefix)/include

2
scripts/makefile.64sunu
View File

@ -33,7 +33,7 @@ RANLIB=echo
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
INCPATH=$(prefix)/include INCPATH=$(prefix)/include

2
scripts/makefile.aix
View File

@ -18,7 +18,7 @@ RM = rm -f
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local prefix=/usr/local

2
scripts/makefile.beos
View File

@ -12,7 +12,7 @@ ZLIBLIB=/usr/local/lib
ZLIBINC=/usr/local/include ZLIBINC=/usr/local/include
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
ALIGN= ALIGN=

2
scripts/makefile.cygwin
View File

@ -79,7 +79,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
CYGDLL = 12 CYGDLL = 12
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=cygpng$(CYGDLL).dll SHAREDLIB=cygpng$(CYGDLL).dll

16
scripts/makefile.darwin
View File

@ -1,5 +1,5 @@
# makefile for libpng on Darwin / Mac OS X # makefile for libpng on Darwin / Mac OS X
# Copyright (C) 2002 Glenn Randers-Pehrson # Copyright (C) 2002,2004 Glenn Randers-Pehrson
# Copyright (C) 2001 Christoph Pfisterer # Copyright (C) 2001 Christoph Pfisterer
# derived from makefile.linux: # derived from makefile.linux:
# Copyright (C) 1998, 1999 Greg Roelofs # Copyright (C) 1998, 1999 Greg Roelofs
@ -23,7 +23,7 @@ LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz
RANLIB=ranlib RANLIB=ranlib
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12
@ -85,18 +85,17 @@ $(LIBNAME).$(PNGMAJ).dylib: $(LIBNAME).$(PNGVER).dylib
$(LIBNAME).$(PNGVER).dylib: $(OBJSDLL) $(LIBNAME).$(PNGVER).dylib: $(OBJSDLL)
$(CC) -dynamiclib \ $(CC) -dynamiclib \
-install_name $(DL)/$(LIBNAME).$(PNGMAJ).dylib \ -install_name $(LIBPATH)/$(LIBNAME).$(PNGMAJ).dylib \
-flat_namespace -undefined suppress \ -current_version $(PNGVER) -compatibility_version $(PNGVER) \
-o $(LIBNAME).$(PNGVER).dylib \ -o $(LIBNAME).$(PNGVER).dylib \
$(OBJSDLL) $(OBJSDLL) -L$(ZLIBLIB) -lz
libpng.3.$(PNGMIN).dylib: $(OBJSDLL) libpng.3.$(PNGMIN).dylib: $(OBJSDLL)
$(CC) -dynamiclib \ $(CC) -dynamiclib \
-install_name $(DL)/libpng.3.dylib \ -install_name $(LIBPATH)/libpng.3.dylib \
-current_version 3 -compatibility_version 3 \ -current_version 3 -compatibility_version 3 \
-flat_namespace -undefined suppress \
-o libpng.3.$(PNGMIN).dylib \ -o libpng.3.$(PNGMIN).dylib \
$(OBJSDLL) $(OBJSDLL) -L$(ZLIBLIB) -lz
pngtest: pngtest.o $(LIBNAME).dylib pngtest: pngtest.o $(LIBNAME).dylib
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS) $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
@ -117,6 +116,7 @@ install-static: install-headers libpng.a
-@if [ ! -d $(DL) ]; then mkdir $(DL); fi -@if [ ! -d $(DL) ]; then mkdir $(DL); fi
cp libpng.a $(DL)/$(LIBNAME).a cp libpng.a $(DL)/$(LIBNAME).a
chmod 644 $(DL)/$(LIBNAME).a chmod 644 $(DL)/$(LIBNAME).a
$(RANLIB) $(DL)/$(LIBNAME).a
-@/bin/rm -f $(DL)/libpng.a -@/bin/rm -f $(DL)/libpng.a
(cd $(DL); ln -sf $(LIBNAME).a libpng.a) (cd $(DL); ln -sf $(LIBNAME).a libpng.a)

2
scripts/makefile.dec
View File

@ -32,7 +32,7 @@ ZLIBLIB=../zlib
ZLIBINC=../zlib ZLIBINC=../zlib
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

2
scripts/makefile.gcmmx
View File

@ -15,7 +15,7 @@
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
CC=gcc CC=gcc

2
scripts/makefile.hpgcc
View File

@ -41,7 +41,7 @@ RANLIB=ranlib
#RANLIB=echo #RANLIB=echo
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

2
scripts/makefile.hpux
View File

@ -24,7 +24,7 @@ LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
RANLIB=ranlib RANLIB=ranlib
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

2
scripts/makefile.linux
View File

@ -5,7 +5,7 @@
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
CC=gcc CC=gcc

197
scripts/makefile.macosx
View File

@ -1,197 +0,0 @@
# makefile for libpng, MACOS X
# Copyright (C) 2002 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
# Modified by Karin Kosina <kyrah@sim.no> 20011010:
# build shared library (*.dylib)
# For conditions of distribution and use, see copyright notice in png.h
# where make install puts libpng.a and png.h
prefix=/usr/local
# Where the zlib library and include files are located
#ZLIBLIB=/usr/local/lib
#ZLIBINC=/usr/local/include
ZLIBLIB=../zlib
ZLIBINC=../zlib
CC=cc
PNGMAJ = 0
PNGMIN = 1.2.5
PNGVER = $(PNGMAJ).$(PNGMIN)
CFLAGS=-fno-common -I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz
LIBNAME=libpng12
SHAREDLIB_POSTFIX=dylib
INCPATH=$(prefix)/include
LIBPATH=$(prefix)/lib
MANPATH=$(prefix)/man
BINPATH=$(prefix)/bin
# override DESTDIR= on the make install command line to easily support
# installing into a temporary location. Example:
#
# make install DESTDIR=/tmp/build/libpng
#
# If you're going to install into a temporary location
# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
# you execute make install.
DESTDIR=
DB=$(DESTDIR)$(BINPATH)
DI=$(DESTDIR)$(INCPATH)
DL=$(DESTDIR)$(LIBPATH)
DM=$(DESTDIR)$(MANPATH)
#RANLIB=echo
RANLIB=ranlib
OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
pngwtran.o pngmem.o pngerror.o pngpread.o
all: libpng.a pngtest shared libpng.pc libpng-config
shared: $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX)
libpng.pc:
cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! | \
sed -e s/-lm// > libpng.pc
libpng-config:
( cat scripts/libpng-config-head.in; \
echo prefix=\"$(prefix)\"; \
echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
echo L_opts=\"-L$(LIBPATH)\"; \
echo libs=\"-lpng12 -lz\"; \
cat scripts/libpng-config-body.in ) > libpng-config
chmod +x libpng-config
libpng.a: $(OBJS)
ar rc $@ $(OBJS)
$(RANLIB) $@
$(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX): $(OBJS)
cc -dynamiclib -flat_namespace -undefined suppress -o $@ $(OBJS)
libpng.3.$(PNGMIN).$(SHAREDLIB_POSTFIX): $(OBJS)
cc -dynamiclib -compatibility_version 3 -flat_namespace \
-undefined suppress -o $@ $(OBJS)
pngtest: pngtest.o libpng.a
$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
test: pngtest
./pngtest
install-headers: png.h pngconf.h
-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
cp png.h pngconf.h $(DI)/$(LIBNAME)
chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
-@/bin/rm -f $(DI)/libpng
(cd $(DI); ln -f -s $(LIBNAME) libpng; ln -f -s $(LIBNAME)/* .)
install-static: install-headers libpng.a
-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
cp libpng.a $(DL)/$(LIBNAME).a
chmod 644 $(DL)/$(LIBNAME).a
-@/bin/rm -f $(DL)/libpng.a
(cd $(DL); ln -f -s $(LIBNAME).a libpng.a)
install-shared: install-headers $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) \
libpng.pc libpng.3.$(PNGMIN).$(SHAREDLIB_POSTFIX)
-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
-@/bin/rm -f \
$(DL)/$(LIBNAME).$(PNGVER)*.$(SHAREDLIB_POSTFIX)
-@/bin/rm -f $(DL)/$(LIBNAME).$(SHAREDLIB_POSTFIX)
-@/bin/rm -f libpng.$(SHAREDLIB_POSTFIX)
-@/bin/rm -f libpng.3.$(SHAREDLIB_POSTFIX)
-@/bin/rm -f libpng.3.$(PNGMIN)*.$(SHAREDLIB_POSTFIX)
cp libpng.3.$(PNGMIN).$(SHAREDLIB_POSTFIX) $(DL)
cp $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) $(DL)
chmod 755 $(DL)/$(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX)
chmod 755 $(DL)/libpng.3.$(PNGMIN).$(SHAREDLIB_POSTFIX)
(cd $(DL); \
ln -f -s libpng.3.$(PNGMIN).$(SHAREDLIB_POSTFIX) \
libpng.3.$(SHAREDLIB_POSTFIX); \
ln -f -s libpng.3.$(SHAREDLIB_POSTFIX) libpng.$(SHAREDLIB_POSTFIX); \
ln -f -s $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) \
libpng.$(SHAREDLIB_POSTFIX); \
ln -f -s libpng.3.$(PNGMIN).$(SHAREDLIB_POSTFIX) \
libpng.3.$(SHAREDLIB_POSTFIX); \
ln -f -s $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) \
$(LIBNAME).$(PNGMAJ).$(SHAREDLIB_POSTFIX); \
ln -f -s $(LIBNAME).$(PNGMAJ).$(SHAREDLIB_POSTFIX) \
$(LIBNAME).$(SHAREDLIB_POSTFIX))
-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
(cd $(DL)/pkgconfig; ln -f -s $(LIBNAME).pc libpng.pc)
install-man: libpng.3 libpngpf.3 png.5
-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
-@/bin/rm -f $(DM)/man3/libpng.3
-@/bin/rm -f $(DM)/man3/libpngpf.3
cp libpng.3 $(DM)/man3
cp libpngpf.3 $(DM)/man3
-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
-@/bin/rm -f $(DM)/man5/png.5
cp png.5 $(DM)/man5
install-config: libpng-config
-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
-@/bin/rm -f $(DB)/libpng-config
-@/bin/rm -f $(DB)/$(LIBNAME)-config
cp libpng-config $(DB)/$(LIBNAME)-config
chmod 755 $(DB)/$(LIBNAME)-config
(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
install: install-static install-shared install-man install-config
# If you installed in $(DESTDIR), test-installed won't work until you
# move the library to its final location.
test-installed:
$(CC) $(CFLAGS) \
`$(BINPATH)/libpng12-config --cflags` pngtest.c \
-L$(ZLIBLIB) \
-o pngtesti `$(BINPATH)/libpng12-config --ldflags`
./pngtesti pngtest.png
clean:
rm -f *.o libpng.a pngtest pngout.png libpng-config \
$(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) \
$(LIBNAME).$(SHAREDLIB_POSTFIX) \
libpng.3.$(PNGMIN).$(SHAREDLIB_POSTFIX) \
libpng.pc
DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
writelock:
chmod a-w *.[ch35] $(DOCS) scripts/*
# DO NOT DELETE THIS LINE -- make depend depends on it.
png.o: png.h pngconf.h
pngerror.o: png.h pngconf.h
pngrio.o: png.h pngconf.h
pngwio.o: png.h pngconf.h
pngmem.o: png.h pngconf.h
pngset.o: png.h pngconf.h
pngget.o: png.h pngconf.h
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h

2
scripts/makefile.ne12bsd
View File

@ -13,7 +13,7 @@ INCSDIR=${LOCALBASE}/include/libpng12
LIB= png12 LIB= png12
SHLIB_MAJOR= 0 SHLIB_MAJOR= 0
SHLIB_MINOR= 1.2.5 SHLIB_MINOR= 1.2.6rc1
SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ 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 \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.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 LIB= png
SHLIB_MAJOR= 3 SHLIB_MAJOR= 3
SHLIB_MINOR= 1.2.5 SHLIB_MINOR= 1.2.6rc1
SRCS= pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ 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 \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.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 MANDIR= ${PREFIX}/man/cat
SHLIB_MAJOR= 0 SHLIB_MAJOR= 0
SHLIB_MINOR= 1.2.5 SHLIB_MINOR= 1.2.6rc1
LIB= png LIB= png
SRCS= png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \ 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 RANLIB=echo
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

2
scripts/makefile.sggcc
View File

@ -18,7 +18,7 @@ ZLIBINC=../zlib
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
CC=gcc CC=gcc

2
scripts/makefile.sgi
View File

@ -5,7 +5,7 @@
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Where make install puts libpng.a, libpng12.so, and libpng12/png.h # 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 RANLIB=echo
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

2
scripts/makefile.solaris
View File

@ -30,7 +30,7 @@ LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
RANLIB=echo RANLIB=echo
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.5 PNGMIN = 1.2.6rc1
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

23
scripts/pngos2.def
View File

@ -2,7 +2,7 @@
; PNG.LIB module definition file for OS/2 ; PNG.LIB module definition file for OS/2
;---------------------------------------- ;----------------------------------------
; Version 1.2.5 ; Version 1.2.6rc1
LIBRARY PNG LIBRARY PNG
DESCRIPTION "PNG image compression library for OS/2" DESCRIPTION "PNG image compression library for OS/2"
@ -184,27 +184,6 @@ EXPORTS
png_convert_to_rfc1123 png_convert_to_rfc1123
png_set_invalid png_set_invalid
; Added at version 1.2.0:
png_mmx_support
png_permit_empty_plte
png_permit_mng_features
png_get_mmx_flagmask
png_get_asm_flagmask
png_get_asm_flags
png_get_mmx_bitdepth_threshold
png_get_mmx_rowbytes_threshold
png_set_asm_flags
png_init_mmx_flags
; Added at version 1.2.2:
png_handle_as_unknown
; Added at version 1.2.2 and deleted from 1.2.3:
; png_zalloc
; png_zfree
; Added at version 1.2.4
png_malloc_warn
; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS ; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
png_libpng_ver png_libpng_ver

29
scripts/pngw32.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 1.2.5 ;Version 1.2.6rc1
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
@ -191,30 +191,3 @@ EXPORTS
png_write_init_3 @176 png_write_init_3 @176
png_info_init_3 @177 png_info_init_3 @177
png_destroy_struct @178 png_destroy_struct @178
; Added at version 1.2.0
; For use with PNG_USER_MEM_SUPPORTED
png_destroy_struct_2 @179
png_create_read_struct_2 @180
png_create_write_struct_2 @181
png_malloc_default @182
png_free_default @183
; MNG features
png_permit_mng_features @184
; MMX support
png_mmx_support @185
png_get_mmx_flagmask @186
png_get_asm_flagmask @187
png_get_asm_flags @188
png_get_mmx_bitdepth_threshold @189
png_get_mmx_rowbytes_threshold @190
png_set_asm_flags @191
png_init_mmx_flags @192
; Strip error numbers
png_set_strip_error_numbers @193
; Added at version 1.2.2
png_handle_as_unknown @194
; Added at version 1.2.2 and deleted from 1.2.3
; png_zalloc @195
; png_zfree @196
; Added at version 1.2.4
png_malloc_warn @195