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[libpng10] Imported from libpng-1.0.51rc01.tar

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Glenn Randers-Pehrson 2009-11-18 09:55:59 -06:00
parent afbb32433c
commit 270a623b90
96 changed files with 3532 additions and 2442 deletions
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161
ANNOUNCE
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@ -1,54 +1,171 @@
Libpng 1.0.50 - September 10, 2009
Libpng 1.0.51rc01 - November 18, 2009
This is a public release of libpng, intended for use in production codes.
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.
Files available for download:
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
libpng-1.0.50.tar.xz (LZMA-compressed, recommended)
libpng-1.0.50.tar.gz
libpng-1.0.50.tar.bz2
libpng-1.0.51rc01.tar.xz (LZMA-compressed, recommended)
libpng-1.0.51rc01.tar.gz
libpng-1.0.51rc01.tar.bz2
Source files with LF line endings (for Unix/Linux) without the
"configure" script
libpng-1.0.50-no-config.tar.xz (LZMA-compressed, recommended)
libpng-1.0.50-no-config.tar.gz
libpng-1.0.50-no-config.tar.bz2
libpng-1.0.51rc01-no-config.tar.xz (LZMA-compressed, recommended)
libpng-1.0.51rc01-no-config.tar.gz
libpng-1.0.51rc01-no-config.tar.bz2
Source files with CRLF line endings (for Windows), without the
"configure" script
lpng1050.zip
lpng1050.7z
lpng1050.tar.bz2
lp1051r01.zip
lp1051r01.7z
lp1051r01.tar.bz2
Project files
libpng-1.0.50-project-netware.zip
libpng-1.0.50-project-wince.zip
libpng-1.0.51rc01-project-netware.zip
libpng-1.0.51rc01-project-wince.zip
Other information:
libpng-1.0.50-README.txt
libpng-1.0.50-KNOWNBUGS.txt
libpng-1.0.50-LICENSE.txt
libpng-1.0.50-Y2K-compliance.txt
libpng-1.0.51rc01-README.txt
libpng-1.0.51rc01-KNOWNBUGS.txt
libpng-1.0.51rc01-LICENSE.txt
libpng-1.0.51rc01-Y2K-compliance.txt
libpng-1.0.51rc01-[previous version]-diff.txt
Changes since the last public release (1.0.49):
Changes since the last public release (1.0.50):
version 1.0.50 [September 10, 2009]
version 1.2.41beta01 [September 25, 2009]
Moved redundant IHDR checking into new png_check_IHDR() in png.c
and report all errors found in the IHDR data.
Eliminated useless call to png_check_cHRM() from pngset.c
Expanded TAB characters in pngrtran.c
version 1.0.50 [September 10, 2009]
Removed some editing cruft from pngset.c and pngwutil.c.
version 1.2.41beta02 [September 30, 2009]
Revised png_check_IHDR().
version 1.2.41beta03 [October 1, 2009]
Revised png_check_IHDR() again, to check info_ptr members instead of
the contents of the returned parameters.
version 1.2.41beta04 [October 7, 2009]
Added "xcode" project similar one already in libpng-1.4.0beta (Alam Arias).
Ported some cosmetic changes from libpng-1.4.0beta86.
Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
version 1.2.41beta05 [October 17, 2009]
Revised pngconf.h to make it easier to enable iTXt support. From libpng
version 1.2.9 through 1.2.40, defining PNG_iTXt_SUPPORTED did not work
as expected.
Ported some cosmetic changes from libpng-1.4.0beta87, changing
many "#if defined(x)" to "#ifdef x".
version 1.2.41beta06 [October 18, 2009]
Restored PNG_USE_LOCAL_ARRAYS code in pngread.c that was inadvertently
deleted in libpng-1.2.41beta05.
Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
as in libpng-1.4.0beta78 and later.
version 1.2.41beta07 [October 21, 2009]
Ported some cosmetic changes from libpng-1.4.0rc01, changing
many "#if defined(x)" to "#ifdef x" in png.h and pngconf.h.
version 1.2.41beta08 [October 30, 2009]
Ported from libpng-1.4.0rc01: png_calloc(), png_get_io_chunk_name(),
png_get_io_state(), png_set_user_cache_max(), png_get_user_cache_max(),
png_set_premultiply_alpha, and png_do_read_premultiply_alpha().
Relocated png_do_chop() ahead of building gamma tables in pngrtran.c
This avoids building 16-bit gamma tables unnecessarily.
version 1.2.41beta09 [November 1, 2009]
Removed a harmless extra png_set_invert_alpha() from pngwrite.c
More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
Moved CMakeLists.txt from scripts into the main libpng directory.
Apply png_user_chunk_cache_max within png_decompress_chunk().
Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.
version 1.2.41beta10 [November 1, 2009]
Enabled iTXt support by default. To ensure binary compatibility with
previous versions, the "lang" and "lang_key" members will be assumed
to be omitted from previous versions unless the current libpng
version was built with PNG_iTXt_SUPPORTED (which is otherwise no
longer necessary to gain iTXt support), as a signal that the user has
been building previous versions with PNG_iTXt_SUPPORTED as well.
version 1.2.41beta11 [November 2, 2009]
Store user's user_png_ver in new png_ptr->user_png_ver element.
Revised iTXt support. To ensure binary compatibility with
previous versions, the "lang" and "lang_key" members will be assumed
to be omitted from versions prior to 1.2.41beta11 whenever there is a
library mismatch.
version 1.2.41beta12 [November 2, 2009]
Free png_ptr->user_png_ver when destroying png_ptr.
version 1.2.41beta13 [November 3, 2009]
Updated scripts/pngw32.def and projects/wince/png32ce.def
Copied projects/wince/png32ce.def to the scripts directory.
Added scripts/makefile.wce
Patched ltmain.sh for wince support.
Added PNG_CONVERT_tIME_SUPPORTED macro.
version 1.2.41beta14 [November 8, 2009]
versions 1.2.41beta05 through 1.2.41beta13 were abandoned.
Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
Reverted iTXt compatibility stuff from 1.2.41beta05, 1.2.41beta11, and
1.2.41beta12.
Reverted IOSTATE feature, user_cache_max, and premultiply_alpha features
from 1.2.41beta08.
Retained png_calloc() from 1.2.41beta08 but as a non-exported function,
and removed reference to png_calloc from scripts/*.def
version 1.2.41beta15 [November 8, 2009]
Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
PNG_ALLOCATED macros to detect deprecated direct access to the
png_struct or info_struct members and other deprecated usage in
applications (John Bowler).
Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
to prevent warnings about direct access to png structs by libpng
functions while building libpng. They need to be tested, especially
those using compilers other than gcc.
Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".
version 1.2.41beta16 [November 9, 2009]
Removed three direct references to read_info_ptr members in pngtest.c
that were detected by the new PNG_DEPSTRUCT macro.
Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.
version 1.2.41beta17 [November 10, 2009]
Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
Marked deprecated function prototypes with PNG_DEPRECATED.
Marked memory allocation function prototypes with PNG_ALLOCATED.
Changed png_check_sig() to !png_sig_cmp() in contrib programs.
Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
Added "-DPNG_CONFIGURE_LIBPNG" to the contrib/pngminum makefiles.
version 1.2.41beta18 [November 11, 2009]
Renamed scripts/makefile.wce to scripts/makefile.cegcc
Marked nonexported functions with PNG_PRIVATE macro.
version 1.2.41beta18 [November 11, 2009]
Revised scripts/*.def to reflect functions actually exported by libpng.
version 1.2.41rc01 and 1.0.51rc01 [November 18, 2009]
Revised scripts/*.def to reflect functions actually exported by libpng.
Updated the copyright year in scripts/pngw32.rc from 2004 to 2009.
Moved descriptions of makefiles and other scripts out of INSTALL into
scripts/README.txt
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement
to subscribe) or to glennrp at users.sourceforge.net

122
CHANGES
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@ -2455,12 +2455,132 @@ version 1.2.40beta01 [August 20, 2009]
version 1.2.40rc01 [September 2, 2009]
Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
version 1.2.40 and 1.0.49 [September 10, 2009]
version 1.2.40 and 1.0.49 [September 2, 2009]
No changes.
version 1.0.50 [September 10, 2009]
Removed some editing cruft from pngset.c and pngwutil.c.
version 1.2.41beta01 [September 25, 2009]
Moved redundant IHDR checking into new png_check_IHDR() in png.c
and report all errors found in the IHDR data.
Eliminated useless call to png_check_cHRM() from pngset.c
Expanded TAB characters in pngrtran.c
version 1.2.41beta02 [September 30, 2009]
Revised png_check_IHDR().
version 1.2.41beta03 [October 1, 2009]
Revised png_check_IHDR() again, to check info_ptr members instead of
the contents of the returned parameters.
version 1.2.41beta04 [October 7, 2009]
Added "xcode" project similar one already in libpng-1.4.0beta (Alam Arias).
Ported some cosmetic changes from libpng-1.4.0beta86.
Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
version 1.2.41beta05 [October 17, 2009]
Revised pngconf.h to make it easier to enable iTXt support. From libpng
version 1.2.9 through 1.2.40, defining PNG_iTXt_SUPPORTED did not work
as expected.
Ported some cosmetic changes from libpng-1.4.0beta87, changing
many "#if defined(x)" to "#ifdef x".
version 1.2.41beta06 [October 18, 2009]
Restored PNG_USE_LOCAL_ARRAYS code in pngread.c that was inadvertently
deleted in libpng-1.2.41beta05.
Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
as in libpng-1.4.0beta78 and later.
version 1.2.41beta07 [October 21, 2009]
Ported some cosmetic changes from libpng-1.4.0rc01, changing
many "#if defined(x)" to "#ifdef x" in png.h and pngconf.h.
version 1.2.41beta08 [October 30, 2009]
Ported from libpng-1.4.0rc01: png_calloc(), png_get_io_chunk_name(),
png_get_io_state(), png_set_user_cache_max(), png_get_user_cache_max(),
png_set_premultiply_alpha, and png_do_read_premultiply_alpha().
Relocated png_do_chop() ahead of building gamma tables in pngrtran.c
This avoids building 16-bit gamma tables unnecessarily.
version 1.2.41beta09 [November 1, 2009]
Removed a harmless extra png_set_invert_alpha() from pngwrite.c
More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
Moved CMakeLists.txt from scripts into the main libpng directory.
Apply png_user_chunk_cache_max within png_decompress_chunk().
Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.
version 1.2.41beta10 [November 1, 2009]
Enabled iTXt support by default. To ensure binary compatibility with
previous versions, the "lang" and "lang_key" members will be assumed
to be omitted from previous versions unless the current libpng
version was built with PNG_iTXt_SUPPORTED (which is otherwise no
longer necessary to gain iTXt support), as a signal that the user has
been building previous versions with PNG_iTXt_SUPPORTED as well.
version 1.2.41beta11 [November 2, 2009]
Store user's user_png_ver in new png_ptr->user_png_ver element.
Revised iTXt support. To ensure binary compatibility with
previous versions, the "lang" and "lang_key" members will be assumed
to be omitted from versions prior to 1.2.41beta11 whenever there is a
library mismatch.
version 1.2.41beta12 [November 2, 2009]
Free png_ptr->user_png_ver when destroying png_ptr.
version 1.2.41beta13 [November 3, 2009]
Updated scripts/pngw32.def and projects/wince/png32ce.def
Copied projects/wince/png32ce.def to the scripts directory.
Added scripts/makefile.wce
Patched ltmain.sh for wince support.
Added PNG_CONVERT_tIME_SUPPORTED macro.
version 1.2.41beta14 [November 8, 2009]
versions 1.2.41beta05 through 1.2.41beta13 were abandoned.
The 1.0.x/1.2.x series will only receive security updates from now on.
Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
Reverted iTXt compatibility stuff from 1.2.41beta05, 1.2.41beta11, and
1.2.41beta12.
Reverted IOSTATE feature, user_cache_max, and premultiply_alpha features
from 1.2.41beta08.
Retained png_calloc() from 1.2.41beta08 but as a non-exported function,
and removed reference to png_calloc from scripts/*.def
version 1.2.41beta15 [November 8, 2009]
Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
PNG_ALLOCATED macros to detect deprecated direct access to the
png_struct or info_struct members and other deprecated usage in
applications (John Bowler).
Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
to prevent warnings about direct access to png structs by libpng
functions while building libpng. They need to be tested, especially
those using compilers other than gcc.
Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".
version 1.2.41beta16 [November 9, 2009]
Removed three direct references to read_info_ptr members in pngtest.c
that were detected by the new PNG_DEPSTRUCT macro.
Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.
version 1.2.41beta17 [November 10, 2009]
Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
Marked deprecated function prototypes with PNG_DEPRECATED.
Marked memory allocation function prototypes with PNG_ALLOCATED.
Changed png_check_sig() to !png_sig_cmp() in contrib programs.
Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
Added "-DPNG_CONFIGURE_LIBPNG" to the contrib/pngminum makefiles.
version 1.2.41beta18 [November 11, 2009]
Renamed scripts/makefile.wce to scripts/makefile.cegcc
Marked nonexported functions with PNG_PRIVATE macro.
version 1.2.41rc01 and 1.0.51rc01 [November 18, 2009]
Revised scripts/*.def to reflect functions actually exported by libpng.
Updated the copyright year in scripts/pngw32.rc from 2004 to 2009.
Moved descriptions of makefiles and other scripts out of INSTALL into
scripts/README.txt
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement

116
INSTALL
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@ -1,5 +1,5 @@
Installing libpng version 1.0.50 - September 10, 2009
Installing libpng version 1.0.51rc01 - November 18, 2009
On Unix/Linux and similar systems, you can simply type
@ -25,27 +25,29 @@ Instead, you can use one of the custom-built makefiles in the
make test
make install
The files that are presently available in the scripts directory
are listed and described in scripts/README.txt.
Or you can use one of the "projects" in the "projects" directory.
If you want to use "cmake" (see www.cmake.org), copy CMakeLists.txt
from the "scripts" directory to this directory and type
cmake . [-DPNG_MMX=YES] -DCMAKE_INSTALL_PREFIX=/path
make
make install
Before installing libpng, you must first install zlib, if it
is not already on your system. zlib can usually be found
wherever you got libpng. zlib can be placed in another directory,
at the same level as libpng.
If you want to use "cmake" (see www.cmake.org), type
cmake . -DCMAKE_INSTALL_PREFIX=/path
make
make install
If your system already has a preinstalled zlib you will still need
to have access to the zlib.h and zconf.h include files that
correspond to the version of zlib that's installed.
You can rename the directories that you downloaded (they
might be called "libpng-1.0.50" or "lpng109" and "zlib-1.2.1"
or "zlib121") so that you have directories called "zlib" and "libpng".
might be called "libpng-1.0.51rc01" or "libpng10" and "zlib-1.2.3"
or "zlib123") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this:
@ -55,19 +57,28 @@ Your directory structure should look like this:
README
*.h
*.c
CMakeLists.txt => "cmake" script
configuration files:
configure.ac, configure, Makefile.am, Makefile.in,
%12-% autogen.sh, config.guess, ltmain.sh, missing,
%12-% aclocal.m4, config.h.in, config.sub,
%14+% autogen.sh, config.guess, ltmain.sh, missing, libpng-pc.in,
%14+% libpng-config.in, aclocal.m4, config.h.in, config.sub,
depcomp, install-sh, mkinstalldirs, test-pngtest.sh
contrib
gregbook
pngminim
pngminus
pngsuite
visupng
projects
beos
c5builder (Borland)
cbuilder5 (Borland)
visualc6 (msvc)
netware.txt
wince.txt
visualc71
xcode
scripts
makefile.*
*.def (module definition files)
pngtest.png
etc.
zlib
@ -82,80 +93,13 @@ distribution of libpng. It is available in both tar.gz (UNIX style line
endings) and zip (DOS style line endings) formats.
If you are building libpng with MSVC, you can enter the
libpng projects\visualc6 directory and follow the instructions in
projects\visualc6\README.txt.
libpng projects\visualc6 or visualc71 directory and follow the instructions
in README.txt.
You can build libpng for WindowsCE by downloading and installing
the projects\wince directory as instructed in the projects\wince.txt file, and
then following the instructions in the README* files. Similarly, you can
build libpng for Netware or Beos as instructed in projects\netware.txt
or projects\beos.
Else enter the zlib directory and follow the instructions in zlib/README,
Otherwise enter the zlib directory and follow the instructions in zlib/README,
then come back here and run "configure" or choose the appropriate
makefile.sys in the scripts directory.
The files that are presently available in the scripts directory
include
CMakeLists.txt => "cmake" script
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng10.so.0.1.0.50)
makefile.linux => Linux/ELF makefile
(gcc, creates libpng10.so.0.1.0.50)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
ftp://ftp.cs.wisc.edu/ghost)
makefile.aix => AIX/gcc makefile
makefile.cygwin => Cygwin/gcc makefile
makefile.darwin => Darwin makefile, can use on MacosX
makefile.dec => DEC Alpha UNIX makefile
makefile.freebsd => FreeBSD makefile
makefile.hpgcc => HPUX makefile using gcc
makefile.hpux => HPUX (10.20 and 11.00) makefile
makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64-bit
makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
makefile.intel => Intel C/C++ version 4.0 and later
libpng.icc => Project file for IBM VisualAge/C++ version 4.0 or later
makefile.netbsd => NetBSD/cc makefile, uses PNGGCCRD, makes libpng.so.
makefile.ne10bsd => NetBSD/cc makefile, uses PNGGCCRD,
makes libpng10.so
makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc,
creates libpng10.so.0.1.0.50)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc,
creates libpng10.so.0.1.0.50)
makefile.solaris-x86 => Solaris/intelMMX 2.X makefile (gcc,
creates libpng10.so.0.1.0.50)
makefile.so9 => Solaris 9 makefile (gcc,
creates libpng10.so.0.1.0.50)
makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile
makefile.amiga => Amiga makefile
smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
(Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
makefile.atari => Atari makefile
makefile.beos => BEOS makefile for X86
makefile.bor => Borland makefile (uses bcc)
makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
makefile.tc3 => Turbo C 3.0 makefile
makefile.dj2 => DJGPP 2 makefile
makefile.msc => Microsoft C makefile
makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and later
makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
pngos2.def => OS/2 module definition file used by makefile.os2
makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
makevms.com => VMS build script
descrip.mms => VMS makefile for MMS or MMK
SCOPTIONS.ppc => Used with smakefile.ppc
Copy the file (or files) that you need from the
scripts directory into this directory, for example
@ -185,9 +129,11 @@ run "make install".
If you encounter a compiler error message complaining about the
lines
__png.h__ already includes setjmp.h;
__dont__ include it again.;
This means you have compiled another module that includes setjmp.h,
this means you have compiled another module that includes setjmp.h,
which is hazardous because the two modules might not include exactly
the same setjmp.h. If you are sure that you know what you are doing
and that they are exactly the same, then you can comment out or

2
KNOWNBUG
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@ -1,5 +1,5 @@
Known bugs in libpng version 1.0.50
Known bugs in libpng version 1.0.51rc01
1. February 23, 2006: The custom makefiles don't build libpng with -lz.

4
LICENSE
View File

@ -10,7 +10,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.0.50, September 10, 2009, are
libpng versions 1.2.6, August 15, 2004, through 1.0.51rc01, November 18, 2009, are
Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
September 10, 2009
November 18, 2009

2
Makefile.am
View File

@ -86,7 +86,7 @@ EXTRA_DIST= \
${srcdir}/contrib/pngsuite/* \
${srcdir}/contrib/visupng/* \
$(TESTS) \
example.c libpng-1.0.50.txt pngvcrd.c
example.c libpng-1.0.51rc01.txt pngvcrd.c
CLEANFILES= pngout.png libpng10.pc libpng10-config libpng.vers \
libpng.sym

2
Makefile.in
View File

@ -352,7 +352,7 @@ EXTRA_DIST = \
${srcdir}/contrib/pngsuite/* \
${srcdir}/contrib/visupng/* \
$(TESTS) \
example.c libpng-1.0.50.txt pngvcrd.c
example.c libpng-1.0.51rc01.txt pngvcrd.c
CLEANFILES = pngout.png libpng10.pc libpng10-config libpng.vers \
libpng.sym

14
README
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@ -1,4 +1,4 @@
README for libpng version 1.0.50 - September 10, 2009 (shared library 10.0)
README for libpng version 1.0.51rc01 - November 18, 2009 (shared library 10.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.
@ -194,11 +194,11 @@ Files in this distribution:
descrip.mms => VMS makefile for MMS or MMK
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng10.so.0.1.0.50)
gcc, creates libpng10.so.0.1.0.51rc01)
makefile.linux => Linux/ELF makefile
(gcc, creates libpng10.so.0.1.0.50)
(gcc, creates libpng10.so.0.1.0.51rc01)
makefile.gcmmx => Linux/ELF makefile
(gcc, creates libpng10.so.0.1.0.50,
(gcc, creates libpng10.so.0.1.0.51rc01,
uses assembler code tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
@ -220,12 +220,12 @@ Files in this distribution:
makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics
(gcc, creates libpng10.so.0.1.0.50)
(gcc, creates libpng10.so.0.1.0.51rc01)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng10.so.0.1.0.50)
(gcc, creates libpng10.so.0.1.0.51rc01)
makefile.so9 => Solaris 9 makefile
(gcc, creates libpng10.so.0.1.0.50)
(gcc, creates libpng10.so.0.1.0.51rc01)
makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc

4
Y2KINFO
View File

@ -1,13 +1,13 @@
Y2K compliance in libpng:
=========================
September 10, 2009
November 18, 2009
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.0.50 are Y2K compliant. It is my belief that earlier
upward through 1.0.51rc01 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer

24
configure vendored
View File

@ -1,6 +1,6 @@
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.64 for libpng 1.0.50.
# Generated by GNU Autoconf 2.64 for libpng 1.0.51rc01.
#
# Report bugs to <png-mng-implement@lists.sourceforge.net>.
#
@ -698,8 +698,8 @@ MAKEFLAGS=
# Identity of this package.
PACKAGE_NAME='libpng'
PACKAGE_TARNAME='libpng'
PACKAGE_VERSION='1.0.50'
PACKAGE_STRING='libpng 1.0.50'
PACKAGE_VERSION='1.0.51rc01'
PACKAGE_STRING='libpng 1.0.51rc01'
PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
PACKAGE_URL=''
@ -1432,7 +1432,7 @@ if test "$ac_init_help" = "long"; then
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
\`configure' configures libpng 1.0.50 to adapt to many kinds of systems.
\`configure' configures libpng 1.0.51rc01 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
@ -1502,7 +1502,7 @@ fi
if test -n "$ac_init_help"; then
case $ac_init_help in
short | recursive ) echo "Configuration of libpng 1.0.50:";;
short | recursive ) echo "Configuration of libpng 1.0.51rc01:";;
esac
cat <<\_ACEOF
@ -1609,7 +1609,7 @@ fi
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
libpng configure 1.0.50
libpng configure 1.0.51rc01
generated by GNU Autoconf 2.64
Copyright (C) 2009 Free Software Foundation, Inc.
@ -2034,7 +2034,7 @@ cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
It was created by libpng $as_me 1.0.50, which was
It was created by libpng $as_me 1.0.51rc01, which was
generated by GNU Autoconf 2.64. Invocation command line was
$ $0 $@
@ -2842,7 +2842,7 @@ fi
# Define the identity of the package.
PACKAGE='libpng'
VERSION='1.0.50'
VERSION='1.0.51rc01'
cat >>confdefs.h <<_ACEOF
@ -2906,10 +2906,10 @@ fi
PNGLIB_VERSION=1.0.50
PNGLIB_VERSION=1.0.51rc01
PNGLIB_MAJOR=1
PNGLIB_MINOR=0
PNGLIB_RELEASE=50
PNGLIB_RELEASE=51
@ -12047,7 +12047,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
This file was extended by libpng $as_me 1.0.50, which was
This file was extended by libpng $as_me 1.0.51rc01, which was
generated by GNU Autoconf 2.64. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
@ -12111,7 +12111,7 @@ Report bugs to <png-mng-implement@lists.sourceforge.net>."
_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_version="\\
libpng config.status 1.0.50
libpng config.status 1.0.51rc01
configured by $0, generated by GNU Autoconf 2.64,
with options \\"`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"

6
configure.ac
View File

@ -18,15 +18,15 @@ AC_PREREQ(2.59)
dnl Version number stuff here:
AC_INIT([libpng], [1.0.50], [png-mng-implement@lists.sourceforge.net])
AC_INIT([libpng], [1.0.51rc01], [png-mng-implement@lists.sourceforge.net])
AM_INIT_AUTOMAKE
dnl stop configure from automagically running automake
AM_MAINTAINER_MODE
PNGLIB_VERSION=1.0.50
PNGLIB_VERSION=1.0.51rc01
PNGLIB_MAJOR=1
PNGLIB_MINOR=0
PNGLIB_RELEASE=50
PNGLIB_RELEASE=51
dnl End of version number stuff

2
contrib/gregbook/readpng.c
View File

@ -93,7 +93,7 @@ int readpng_init(FILE *infile, ulg *pWidth, ulg *pHeight)
* have used slightly more general png_sig_cmp() function instead */
fread(sig, 1, 8, infile);
if (!png_check_sig(sig, 8))
if (png_sig_cmp(sig, 0, 8))
return 1; /* bad signature */

9
contrib/gregbook/readpng2.c
View File

@ -159,7 +159,7 @@ void readpng2_version_info(void)
int readpng2_check_sig(uch *sig, int num)
{
return png_check_sig(sig, num);
return !png_sig_cmp(sig, 0, num);
}
@ -379,6 +379,7 @@ static void readpng2_info_callback(png_structp png_ptr, png_infop info_ptr)
{
mainprog_info *mainprog_ptr;
int color_type, bit_depth;
png_uint_32 width, height;
double gamma;
@ -414,8 +415,10 @@ static void readpng2_info_callback(png_structp png_ptr, png_infop info_ptr)
/* this is just like in the non-progressive case */
png_get_IHDR(png_ptr, info_ptr, &mainprog_ptr->width,
&mainprog_ptr->height, &bit_depth, &color_type, NULL, NULL, NULL);
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
NULL, NULL, NULL);
mainprog_ptr->width = (ulg)width;
mainprog_ptr->height = (ulg)height;
/* since we know we've read all of the PNG file's "header" (i.e., up

2
contrib/pngminus/png2pnm.c
View File

@ -211,7 +211,7 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL a
if (ret != 8)
return FALSE;
ret = png_check_sig (buf, 8);
ret = !png_sig_cmp (buf, 0, 8);
if (!ret)
return FALSE;

2
contrib/visupng/PngFile.c
View File

@ -126,7 +126,7 @@ BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
// first check the eight byte PNG signature
fread(pbSig, 1, 8, pfFile);
if (!png_check_sig(pbSig, 8))
if (png_sig_cmp(pbSig, 0, 8))
{
*ppbImageData = pbImageData = NULL;
return FALSE;

319
libpng-1.0.50.txt → libpng-1.0.51rc01.txt
View File

@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
libpng version 1.0.50 - September 10, 2009
libpng version 1.0.51rc01 - November 18, 2009
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -11,7 +11,7 @@ libpng.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.0.50 - September 10, 2009
libpng versions 0.97, January 1998, through 1.0.51rc01 - November 18, 2009
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -40,8 +40,8 @@ will need. We assume that libpng is already installed; see the
INSTALL file for instructions on how to install libpng.
For examples of libpng usage, see the files "example.c", "pngtest.c",
and the files in the "contrib" directory, all of which are included in the
libpng distribution.
and the files in the "contrib" directory, all of which are included in
the libpng distribution.
Libpng was written as a companion to the PNG specification, as a way
of reducing the amount of time and effort it takes to support the PNG
@ -388,6 +388,41 @@ callback function:
(int)sizeof(unused_chunks)/5);
#endif
User 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);
The PNG specification sets no limit on the number of ancillary chunks
allowed in a PNG datastream. You can impose a limit on the total number
of sPLT, tEXt, iTXt, zTXt, and unknown chunks that will be stored, with
png_set_chunk_cache_max(png_ptr, user_chunk_cache_max);
where 0x7fffffffL means unlimited. You can retrieve this limit with
chunk_cache_max = png_get_chunk_cache_max(png_ptr);
This limit also applies to the number of buffers that can be allocated
by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks.
The high-level read interface
At this point there are two ways to proceed; through the high-level
@ -415,14 +450,16 @@ you want to do are limited to the following set:
PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
to transparency
PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
PNG_TRANSFORM_GRAY_TO_RGB Expand grayscale samples
to RGB (or GA to RGBA)
(This excludes setting a background color, doing gamma transformation,
dithering, and setting filler.) If this is the case, simply do this:
png_read_png(png_ptr, info_ptr, png_transforms, NULL)
where png_transforms is an integer containing the bitwise OR of
some set of transformation flags. This call is equivalent to png_read_info(),
where png_transforms is an integer containing the bitwise OR of some
set of transformation flags. This call is equivalent to png_read_info(),
followed the set of transformations indicated by the transform mask,
then png_read_image(), and finally png_read_end().
@ -523,10 +560,33 @@ in until png_read_end() has read the chunk data following the image.
for PNG 1.0)
interlace_type - (PNG_INTERLACE_NONE or
PNG_INTERLACE_ADAM7)
Any or all of interlace_type, compression_type, of
Any or all of interlace_type, compression_type, or
filter_method can be NULL if you are
not interested in their values.
Note that png_get_IHDR() returns 32-bit data into
the application's width and height variables.
This is an unsafe situation if these are 16-bit
variables. In such situations, the
png_get_image_width() and png_get_image_height()
functions described below are safer.
width = png_get_image_width(png_ptr,
info_ptr);
height = png_get_image_height(png_ptr,
info_ptr);
bit_depth = png_get_bit_depth(png_ptr,
info_ptr);
color_type = png_get_color_type(png_ptr,
info_ptr);
filter_method = png_get_filter_type(png_ptr,
info_ptr);
compression_type = png_get_compression_type(png_ptr,
info_ptr);
interlace_type = png_get_interlace_type(png_ptr,
info_ptr);
channels = png_get_channels(png_ptr, info_ptr);
channels - number of channels of info for the
color type (valid values are 1 (GRAY,
@ -546,29 +606,12 @@ in until png_read_end() has read the chunk data following the image.
be in signature[4] through signature[7]
(see png_set_sig_bytes())).
width = png_get_image_width(png_ptr,
info_ptr);
height = png_get_image_height(png_ptr,
info_ptr);
bit_depth = png_get_bit_depth(png_ptr,
info_ptr);
color_type = png_get_color_type(png_ptr,
info_ptr);
filter_method = png_get_filter_type(png_ptr,
info_ptr);
compression_type = png_get_compression_type(png_ptr,
info_ptr);
interlace_type = png_get_interlace_type(png_ptr,
info_ptr);
These are also important, but their validity depends on whether the chunk
has been read. The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
data has been read, or zero if it is missing. The parameters to the
png_get_<chunk> are set directly if they are simple data types, or a pointer
into the info_ptr is returned for any complex types.
png_get_<chunk> are set directly if they are simple data types, or a
pointer into the info_ptr is returned for any complex types.
png_get_PLTE(png_ptr, info_ptr, &palette,
&num_palette);
@ -608,8 +651,8 @@ into the info_ptr is returned for any complex types.
png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans,
&trans_values);
trans - array of transparent entries for
palette (PNG_INFO_tRNS)
trans - array of transparent
entries for palette (PNG_INFO_tRNS)
trans_values - graylevel or color sample values of
the single transparent color for
non-paletted images (PNG_INFO_tRNS)
@ -652,6 +695,10 @@ into the info_ptr is returned for any complex types.
string for unknown).
text_ptr[i].lang_key - keyword in UTF-8
(empty string for unknown).
Note that the itxt_length, lang, and lang_key
members of the text_ptr structure only exist
when the library is built with iTXt chunk support.
num_text - number of comments (same as
num_comments; you can put NULL here
to avoid the duplication)
@ -828,6 +875,46 @@ in libpng version 1.0.4, with the function names expanded to improve code
readability. In some future version they may actually do different
things.
As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
added. It expands the sample depth without changing tRNS to alpha.
As of libpng version 1.0.51rc01, not all possible expansions are supported.
In the following table, the 01 means grayscale with depth<8, 31 means
indexed with depth<8, other numerals represent the color type, "T" means
the tRNS chunk is present, A means an alpha channel is present, and O
means tRNS or alpha is present but all pixels in the image are opaque.
FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O
TO
01 -
31 -
0 1 -
0T -
0O -
2 GX -
2T -
2O -
3 1 -
3T -
3O -
4A T -
4O -
6A GX TX TX -
6O GX TX -
Within the matrix,
"-" means the transformation is not supported.
"X" means the transformation is obtained by png_set_expand().
"1" means the transformation is obtained by
png_set_expand_gray_1_2_4_to_8
"G" means the transformation is obtained by
png_set_gray_to_rgb().
"P" means the transformation is obtained by
png_set_expand_palette_to_rgb().
"T" means the transformation is obtained by
png_set_tRNS_to_alpha().
PNG can have files with 16 bits per channel. If you only can handle
8 bits per channel, this will strip the pixels down to 8 bit.
@ -851,6 +938,15 @@ images) is fully transparent, with
png_set_invert_alpha(png_ptr);
The PNG format only supports pixels with postmultiplied alpha.
If you want to replace the pixels, after reading them, with pixels
that have premultiplied color samples, you can do this with
png_set_premultiply_alpha(png_ptr);
If you do this, any input with a tRNS chunk will be expanded to
have an alpha channel.
PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
they can, resulting in, for example, 8 pixels per byte for 1 bit
files. This code expands to 1 pixel per byte without changing the
@ -861,10 +957,10 @@ values of the pixels:
PNG files have possible bit depths of 1, 2, 4, 8, and 16. All pixels
stored in a PNG image have been "scaled" or "shifted" up to the next
higher possible bit depth (e.g. from 5 bits/sample in the range [0,31] to
8 bits/sample in the range [0, 255]). However, it is also possible to
convert the PNG pixel data back to the original bit depth of the image.
This call reduces the pixels back down to the original bit depth:
higher possible bit depth (e.g. from 5 bits/sample in the range [0,31]
to 8 bits/sample in the range [0, 255]). However, it is also possible
to convert the PNG pixel data back to the original bit depth of the
image. This call reduces the pixels back down to the original bit depth:
png_color_8p sig_bit;
@ -1302,12 +1398,11 @@ point to libpng-allocated storage with the following function:
This function may be safely called when the relevant storage has
already been freed, or has not yet been allocated, or was allocated
by the user and not by libpng, and will in those
cases do nothing. The "seq" parameter is ignored if only one item
of the selected data type, such as PLTE, is allowed. If "seq" is not
-1, and multiple items are allowed for the data type identified in
the mask, such as text or sPLT, only the n'th item in the structure
is freed, where n is "seq".
by the user and not by libpng, and will in those cases do nothing.
The "seq" parameter is ignored if only one item of the selected data
type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
are allowed for the data type identified in the mask, such as text or
sPLT, only the n'th item in the structure is freed, where n is "seq".
The default behavior is only to free data that was allocated internally
by libpng. This can be changed, so that libpng will not free the data,
@ -1346,8 +1441,8 @@ if you transfer responsibility for free'ing text_ptr from libpng to your
application, your application must not separately free those members.
The png_free_data() function will turn off the "valid" flag for anything
it frees. If you need to turn the flag off for a chunk that was freed by your
application instead of by libpng, you can use
it frees. If you need to turn the flag off for a chunk that was freed by
your application instead of by libpng, you can use
png_set_invalid(png_ptr, info_ptr, mask);
mask - identifies the chunks to be made invalid,
@ -1657,8 +1752,8 @@ the filter method, for which the only valid values are 0 (as of the
July 1999 PNG specification, version 1.2) or 64 (if you are writing
a PNG datastream that is to be embedded in a MNG datastream). The third
parameter is a flag that indicates which filter type(s) are to be tested
for each scanline. See the PNG specification for details on the specific filter
types.
for each scanline. See the PNG specification for details on the specific
filter types.
/* turn on or off filtering, and/or choose
@ -1826,8 +1921,8 @@ width, height, bit_depth, and color_type must be the same in each call.
png_set_tRNS(png_ptr, info_ptr, trans, num_trans,
trans_values);
trans - array of transparent entries for
palette (PNG_INFO_tRNS)
trans - array of transparent
entries for palette (PNG_INFO_tRNS)
trans_values - graylevel or color sample values
(in order red, green, blue) of the
single transparent color for
@ -1867,6 +1962,10 @@ width, height, bit_depth, and color_type must be the same in each call.
empty for unknown).
text_ptr[i].translated_keyword - keyword in UTF-8 (NULL
or empty for unknown).
Note that the itxt_length, lang, and lang_key
members of the text_ptr structure only exist
when the library is built with iTXt chunk support.
num_text - number of comments
png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
@ -2072,10 +2171,10 @@ this with a call to png_write_info().
Note that there is one transformation you may need to do before
png_write_info(). In PNG files, the alpha channel in an image is the
level of opacity. If your data is supplied as a level of
transparency, you can invert the alpha channel before you write it, so
that 0 is fully transparent and 255 (in 8-bit or paletted images) or
65535 (in 16-bit images) is fully opaque, with
level of opacity. If your data is supplied as a level of transparency,
you can invert the alpha channel before you write it, so that 0 is
fully transparent and 255 (in 8-bit or paletted images) or 65535
(in 16-bit images) is fully opaque, with
png_set_invert_alpha(png_ptr);
@ -2262,14 +2361,13 @@ a single row_pointer instead of an array of row_pointers:
png_write_row(png_ptr, row_pointer);
When the file is interlaced, things can get a good deal more
complicated. The only currently (as of the PNG Specification
version 1.2, dated July 1999) defined interlacing scheme for PNG files
is the "Adam7" interlace scheme, that breaks down an
image into seven smaller images of varying size. libpng will build
these images for you, or you can do them yourself. If you want to
build them yourself, see the PNG specification for details of which
pixels to write when.
When the file is interlaced, things can get a good deal more complicated.
The only currently (as of the PNG Specification version 1.2, dated July
1999) defined interlacing scheme for PNG files is the "Adam7" interlace
scheme, that breaks down an image into seven smaller images of varying
size. libpng will build these images for you, or you can do them
yourself. If you want to build them yourself, see the PNG specification
for details of which pixels to write when.
If you don't want libpng to handle the interlacing details, just
use png_set_interlace_handling() and call png_write_rows() the
@ -2281,17 +2379,17 @@ writing any rows:
number_of_passes =
png_set_interlace_handling(png_ptr);
This will return the number of passes needed. Currently, this
is seven, but may change if another interlace type is added.
This will return the number of passes needed. Currently, this is seven,
but may change if another interlace type is added.
Then write the complete image number_of_passes times.
png_write_rows(png_ptr, row_pointers,
number_of_rows);
As some of these rows are not used, and thus return immediately,
you may want to read about interlacing in the PNG specification,
and only update the rows that are actually used.
As some of these rows are not used, and thus return immediately, you may
want to read about interlacing in the PNG specification, and only update
the rows that are actually used.
Finishing a sequential write
@ -2324,15 +2422,14 @@ point to libpng-allocated storage with the following function:
This function may be safely called when the relevant storage has
already been freed, or has not yet been allocated, or was allocated
by the user and not by libpng, and will in those
cases do nothing. The "seq" parameter is ignored if only one item
of the selected data type, such as PLTE, is allowed. If "seq" is not
-1, and multiple items are allowed for the data type identified in
the mask, such as text or sPLT, only the n'th item in the structure
is freed, where n is "seq".
by the user and not by libpng, and will in those cases do nothing.
The "seq" parameter is ignored if only one item of the selected data
type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
are allowed for the data type identified in the mask, such as text or
sPLT, only the n'th item in the structure is freed, where n is "seq".
If you allocated data such as a palette that you passed
in to libpng with png_set_*, you must not free it until just before the call to
If you allocated data such as a palette that you passed in to libpng
with png_set_*, you must not free it until just before the call to
png_destroy_write_struct().
The default behavior is only to free data that was allocated internally
@ -2398,16 +2495,18 @@ goes through callbacks that are user-settable. The default routines are
in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change
these functions, call the appropriate png_set_*_fn() function.
Memory allocation is done through the functions png_malloc()
and png_free(). These currently just call the standard C functions. If
your pointers can't access more then 64K at a time, you will want to set
MAXSEG_64K in zlib.h. Since it is unlikely that the method of handling
memory allocation on a platform will change between applications, these
functions must be modified in the library at compile time. If you prefer
to use a different method of allocating and freeing data, you can use
png_create_read_struct_2() or png_create_write_struct_2() to register
your own functions as described above.
These functions also provide a void pointer that can be retrieved via
Memory allocation is done through the functions png_malloc(), png_calloc(),
and png_free(). These currently just call the standard C functions.
png_calloc() calls png_malloc() and then png_memset() to clear the newly
allocated memory to zero. If your pointers can't access more then 64K
at a time, you will want to set MAXSEG_64K in zlib.h. Since it is
unlikely that the method of handling memory allocation on a platform
will change between applications, these functions must be modified in
the library at compile time. If you prefer to use a different method
of allocating and freeing data, you can use png_create_read_struct_2() or
png_create_write_struct_2() to register your own functions as described
above. These functions also provide a void pointer that can be retrieved
via
mem_ptr=png_get_mem_ptr(png_ptr);
@ -2499,10 +2598,10 @@ The motivation behind using setjmp() and longjmp() is the C++ throw and
catch exception handling methods. This makes the code much easier to write,
as there is no need to check every return code of every function call.
However, there are some uncertainties about the status of local variables
after a longjmp, so the user may want to be careful about doing anything after
setjmp returns non-zero besides returning itself. Consult your compiler
documentation for more details. For an alternative approach, you may wish
to use the "cexcept" facility (see http://cexcept.sourceforge.net).
after a longjmp, so the user may want to be careful about doing anything
after setjmp returns non-zero besides returning itself. Consult your
compiler documentation for more details. For an alternative approach, you
may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net).
Custom chunks
@ -2514,15 +2613,14 @@ library code itself needs to know about interactions between your
chunk and existing `intrinsic' chunks.
If you need to write a new intrinsic chunk, first read the PNG
specification. Acquire a first level of
understanding of how it works. Pay particular attention to the
sections that describe chunk names, and look at how other chunks were
designed, so you can do things similarly. Second, check out the
sections of libpng that read and write chunks. Try to find a chunk
that is similar to yours and use it as a template. More details can
be found in the comments inside the code. It is best to handle unknown
chunks in a generic method, via callback functions, instead of by
modifying libpng functions.
specification. Acquire a first level of understanding of how it works.
Pay particular attention to the sections that describe chunk names,
and look at how other chunks were designed, so you can do things
similarly. Second, check out the sections of libpng that read and
write chunks. Try to find a chunk that is similar to yours and use
it as a template. More details can be found in the comments inside
the code. It is best to handle unknown chunks in a generic method,
via callback functions, instead of by modifying libpng functions.
If you wish to write your own transformation for the data, look through
the part of the code that does the transformations, and check out some of
@ -2699,14 +2797,14 @@ off en masse with compiler directives that define
PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
or all four,
along with directives to turn on any of the capabilities that you do
want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable
the extra transformations but still leave the library fully capable of reading
and writing PNG files with all known public chunks
Use of the PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive
produces a library that is incapable of reading or writing ancillary chunks.
If you are not using the progressive reading capability, you can
turn that off with PNG_NO_PROGRESSIVE_READ (don't confuse
this with the INTERLACING capability, which you'll still have).
want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra
transformations but still leave the library fully capable of reading
and writing PNG files with all known public chunks. Use of the
PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library
that is incapable of reading or writing ancillary chunks. If you are
not using the progressive reading capability, you can turn that off
with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING
capability, which you'll still have).
All the reading and writing specific code are in separate files, so the
linker should only grab the files it needs. However, if you want to
@ -2836,7 +2934,6 @@ application:
VIII. (Omitted).
IX. (Omitted)
X. Detecting libpng
The png_get_io_ptr() function has been present since libpng-0.88, has never
@ -2889,6 +2986,15 @@ We use 3-space indentation, except for continued statements which
are usually indented the same as the first line of the statement
plus four more spaces.
For macro definitions we use 2-space indentation, always leaving the "#"
in the first column.
#ifndef PNG_NO_FEATURE
# ifndef PNG_FEATURE_SUPPORTED
# define PNG_FEATURE_SUPPORTED
# endif
#endif
Comments appear with the leading "/*" at the same indentation as
the statement that follows the comment:
@ -2953,23 +3059,24 @@ cast, nor do we put one between a function name and the
left parenthesis that follows it:
for (i = 2; i > 0; --i)
x[i] = a(x) + (int)b;
y[i] = a(x) + (int)b;
We prefer #ifdef and #ifndef to #if defined() and if !defined()
when there is only one macro being tested.
Other rules can be inferred by inspecting the libpng
source.
We do not use the TAB character for indentation in the C sources.
Other rules can be inferred by inspecting the libpng source.
XIII. Y2K Compliance in libpng
September 10, 2009
November 18, 2009
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.0.50 are Y2K compliant. It is my belief that earlier
upward through 1.0.51rc01 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that

334
libpng.3
View File

@ -1,6 +1,6 @@
.TH LIBPNG 3 "September 10, 2009"
.TH LIBPNG 3 "November 18, 2009"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.50
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.51rc01
.SH SYNOPSIS
\fI\fB
@ -821,7 +821,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
.SH LIBPNG.TXT
libpng.txt - A description on how to use and modify libpng
libpng version 1.0.50 - September 10, 2009
libpng version 1.0.51rc01 - November 18, 2009
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -832,7 +832,7 @@ libpng.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.0.50 - September 10, 2009
libpng versions 0.97, January 1998, through 1.0.51rc01 - November 18, 2009
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -861,8 +861,8 @@ will need. We assume that libpng is already installed; see the
INSTALL file for instructions on how to install libpng.
For examples of libpng usage, see the files "example.c", "pngtest.c",
and the files in the "contrib" directory, all of which are included in the
libpng distribution.
and the files in the "contrib" directory, all of which are included in
the libpng distribution.
Libpng was written as a companion to the PNG specification, as a way
of reducing the amount of time and effort it takes to support the PNG
@ -1209,6 +1209,41 @@ callback function:
(int)sizeof(unused_chunks)/5);
#endif
.SS User 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);
The PNG specification sets no limit on the number of ancillary chunks
allowed in a PNG datastream. You can impose a limit on the total number
of sPLT, tEXt, iTXt, zTXt, and unknown chunks that will be stored, with
png_set_chunk_cache_max(png_ptr, user_chunk_cache_max);
where 0x7fffffffL means unlimited. You can retrieve this limit with
chunk_cache_max = png_get_chunk_cache_max(png_ptr);
This limit also applies to the number of buffers that can be allocated
by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks.
.SS The high-level read interface
At this point there are two ways to proceed; through the high-level
@ -1236,14 +1271,16 @@ you want to do are limited to the following set:
PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
to transparency
PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
PNG_TRANSFORM_GRAY_TO_RGB Expand grayscale samples
to RGB (or GA to RGBA)
(This excludes setting a background color, doing gamma transformation,
dithering, and setting filler.) If this is the case, simply do this:
png_read_png(png_ptr, info_ptr, png_transforms, NULL)
where png_transforms is an integer containing the bitwise OR of
some set of transformation flags. This call is equivalent to png_read_info(),
where png_transforms is an integer containing the bitwise OR of some
set of transformation flags. This call is equivalent to png_read_info(),
followed the set of transformations indicated by the transform mask,
then png_read_image(), and finally png_read_end().
@ -1344,10 +1381,33 @@ in until png_read_end() has read the chunk data following the image.
for PNG 1.0)
interlace_type - (PNG_INTERLACE_NONE or
PNG_INTERLACE_ADAM7)
Any or all of interlace_type, compression_type, of
Any or all of interlace_type, compression_type, or
filter_method can be NULL if you are
not interested in their values.
Note that png_get_IHDR() returns 32-bit data into
the application's width and height variables.
This is an unsafe situation if these are 16-bit
variables. In such situations, the
png_get_image_width() and png_get_image_height()
functions described below are safer.
width = png_get_image_width(png_ptr,
info_ptr);
height = png_get_image_height(png_ptr,
info_ptr);
bit_depth = png_get_bit_depth(png_ptr,
info_ptr);
color_type = png_get_color_type(png_ptr,
info_ptr);
filter_method = png_get_filter_type(png_ptr,
info_ptr);
compression_type = png_get_compression_type(png_ptr,
info_ptr);
interlace_type = png_get_interlace_type(png_ptr,
info_ptr);
channels = png_get_channels(png_ptr, info_ptr);
channels - number of channels of info for the
color type (valid values are 1 (GRAY,
@ -1367,29 +1427,12 @@ in until png_read_end() has read the chunk data following the image.
be in signature[4] through signature[7]
(see png_set_sig_bytes())).
width = png_get_image_width(png_ptr,
info_ptr);
height = png_get_image_height(png_ptr,
info_ptr);
bit_depth = png_get_bit_depth(png_ptr,
info_ptr);
color_type = png_get_color_type(png_ptr,
info_ptr);
filter_method = png_get_filter_type(png_ptr,
info_ptr);
compression_type = png_get_compression_type(png_ptr,
info_ptr);
interlace_type = png_get_interlace_type(png_ptr,
info_ptr);
These are also important, but their validity depends on whether the chunk
has been read. The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
data has been read, or zero if it is missing. The parameters to the
png_get_<chunk> are set directly if they are simple data types, or a pointer
into the info_ptr is returned for any complex types.
png_get_<chunk> are set directly if they are simple data types, or a
pointer into the info_ptr is returned for any complex types.
png_get_PLTE(png_ptr, info_ptr, &palette,
&num_palette);
@ -1429,8 +1472,8 @@ into the info_ptr is returned for any complex types.
png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans,
&trans_values);
trans - array of transparent entries for
palette (PNG_INFO_tRNS)
trans - array of transparent
entries for palette (PNG_INFO_tRNS)
trans_values - graylevel or color sample values of
the single transparent color for
non-paletted images (PNG_INFO_tRNS)
@ -1473,6 +1516,10 @@ into the info_ptr is returned for any complex types.
string for unknown).
text_ptr[i].lang_key - keyword in UTF-8
(empty string for unknown).
Note that the itxt_length, lang, and lang_key
members of the text_ptr structure only exist
when the library is built with iTXt chunk support.
num_text - number of comments (same as
num_comments; you can put NULL here
to avoid the duplication)
@ -1649,6 +1696,46 @@ in libpng version 1.0.4, with the function names expanded to improve code
readability. In some future version they may actually do different
things.
As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
added. It expands the sample depth without changing tRNS to alpha.
As of libpng version 1.0.51rc01, not all possible expansions are supported.
In the following table, the 01 means grayscale with depth<8, 31 means
indexed with depth<8, other numerals represent the color type, "T" means
the tRNS chunk is present, A means an alpha channel is present, and O
means tRNS or alpha is present but all pixels in the image are opaque.
FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O
TO
01 -
31 -
0 1 -
0T -
0O -
2 GX -
2T -
2O -
3 1 -
3T -
3O -
4A T -
4O -
6A GX TX TX -
6O GX TX -
Within the matrix,
"-" means the transformation is not supported.
"X" means the transformation is obtained by png_set_expand().
"1" means the transformation is obtained by
png_set_expand_gray_1_2_4_to_8
"G" means the transformation is obtained by
png_set_gray_to_rgb().
"P" means the transformation is obtained by
png_set_expand_palette_to_rgb().
"T" means the transformation is obtained by
png_set_tRNS_to_alpha().
PNG can have files with 16 bits per channel. If you only can handle
8 bits per channel, this will strip the pixels down to 8 bit.
@ -1672,6 +1759,15 @@ images) is fully transparent, with
png_set_invert_alpha(png_ptr);
The PNG format only supports pixels with postmultiplied alpha.
If you want to replace the pixels, after reading them, with pixels
that have premultiplied color samples, you can do this with
png_set_premultiply_alpha(png_ptr);
If you do this, any input with a tRNS chunk will be expanded to
have an alpha channel.
PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
they can, resulting in, for example, 8 pixels per byte for 1 bit
files. This code expands to 1 pixel per byte without changing the
@ -1682,10 +1778,10 @@ values of the pixels:
PNG files have possible bit depths of 1, 2, 4, 8, and 16. All pixels
stored in a PNG image have been "scaled" or "shifted" up to the next
higher possible bit depth (e.g. from 5 bits/sample in the range [0,31] to
8 bits/sample in the range [0, 255]). However, it is also possible to
convert the PNG pixel data back to the original bit depth of the image.
This call reduces the pixels back down to the original bit depth:
higher possible bit depth (e.g. from 5 bits/sample in the range [0,31]
to 8 bits/sample in the range [0, 255]). However, it is also possible
to convert the PNG pixel data back to the original bit depth of the
image. This call reduces the pixels back down to the original bit depth:
png_color_8p sig_bit;
@ -2123,12 +2219,11 @@ point to libpng-allocated storage with the following function:
This function may be safely called when the relevant storage has
already been freed, or has not yet been allocated, or was allocated
by the user and not by libpng, and will in those
cases do nothing. The "seq" parameter is ignored if only one item
of the selected data type, such as PLTE, is allowed. If "seq" is not
-1, and multiple items are allowed for the data type identified in
the mask, such as text or sPLT, only the n'th item in the structure
is freed, where n is "seq".
by the user and not by libpng, and will in those cases do nothing.
The "seq" parameter is ignored if only one item of the selected data
type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
are allowed for the data type identified in the mask, such as text or
sPLT, only the n'th item in the structure is freed, where n is "seq".
The default behavior is only to free data that was allocated internally
by libpng. This can be changed, so that libpng will not free the data,
@ -2167,8 +2262,8 @@ if you transfer responsibility for free'ing text_ptr from libpng to your
application, your application must not separately free those members.
The png_free_data() function will turn off the "valid" flag for anything
it frees. If you need to turn the flag off for a chunk that was freed by your
application instead of by libpng, you can use
it frees. If you need to turn the flag off for a chunk that was freed by
your application instead of by libpng, you can use
png_set_invalid(png_ptr, info_ptr, mask);
mask - identifies the chunks to be made invalid,
@ -2478,8 +2573,8 @@ the filter method, for which the only valid values are 0 (as of the
July 1999 PNG specification, version 1.2) or 64 (if you are writing
a PNG datastream that is to be embedded in a MNG datastream). The third
parameter is a flag that indicates which filter type(s) are to be tested
for each scanline. See the PNG specification for details on the specific filter
types.
for each scanline. See the PNG specification for details on the specific
filter types.
/* turn on or off filtering, and/or choose
@ -2647,8 +2742,8 @@ width, height, bit_depth, and color_type must be the same in each call.
png_set_tRNS(png_ptr, info_ptr, trans, num_trans,
trans_values);
trans - array of transparent entries for
palette (PNG_INFO_tRNS)
trans - array of transparent
entries for palette (PNG_INFO_tRNS)
trans_values - graylevel or color sample values
(in order red, green, blue) of the
single transparent color for
@ -2688,6 +2783,10 @@ width, height, bit_depth, and color_type must be the same in each call.
empty for unknown).
text_ptr[i].translated_keyword - keyword in UTF-8 (NULL
or empty for unknown).
Note that the itxt_length, lang, and lang_key
members of the text_ptr structure only exist
when the library is built with iTXt chunk support.
num_text - number of comments
png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
@ -2893,10 +2992,10 @@ this with a call to png_write_info().
Note that there is one transformation you may need to do before
png_write_info(). In PNG files, the alpha channel in an image is the
level of opacity. If your data is supplied as a level of
transparency, you can invert the alpha channel before you write it, so
that 0 is fully transparent and 255 (in 8-bit or paletted images) or
65535 (in 16-bit images) is fully opaque, with
level of opacity. If your data is supplied as a level of transparency,
you can invert the alpha channel before you write it, so that 0 is
fully transparent and 255 (in 8-bit or paletted images) or 65535
(in 16-bit images) is fully opaque, with
png_set_invert_alpha(png_ptr);
@ -3083,14 +3182,13 @@ a single row_pointer instead of an array of row_pointers:
png_write_row(png_ptr, row_pointer);
When the file is interlaced, things can get a good deal more
complicated. The only currently (as of the PNG Specification
version 1.2, dated July 1999) defined interlacing scheme for PNG files
is the "Adam7" interlace scheme, that breaks down an
image into seven smaller images of varying size. libpng will build
these images for you, or you can do them yourself. If you want to
build them yourself, see the PNG specification for details of which
pixels to write when.
When the file is interlaced, things can get a good deal more complicated.
The only currently (as of the PNG Specification version 1.2, dated July
1999) defined interlacing scheme for PNG files is the "Adam7" interlace
scheme, that breaks down an image into seven smaller images of varying
size. libpng will build these images for you, or you can do them
yourself. If you want to build them yourself, see the PNG specification
for details of which pixels to write when.
If you don't want libpng to handle the interlacing details, just
use png_set_interlace_handling() and call png_write_rows() the
@ -3102,17 +3200,17 @@ writing any rows:
number_of_passes =
png_set_interlace_handling(png_ptr);
This will return the number of passes needed. Currently, this
is seven, but may change if another interlace type is added.
This will return the number of passes needed. Currently, this is seven,
but may change if another interlace type is added.
Then write the complete image number_of_passes times.
png_write_rows(png_ptr, row_pointers,
number_of_rows);
As some of these rows are not used, and thus return immediately,
you may want to read about interlacing in the PNG specification,
and only update the rows that are actually used.
As some of these rows are not used, and thus return immediately, you may
want to read about interlacing in the PNG specification, and only update
the rows that are actually used.
.SS Finishing a sequential write
@ -3145,15 +3243,14 @@ point to libpng-allocated storage with the following function:
This function may be safely called when the relevant storage has
already been freed, or has not yet been allocated, or was allocated
by the user and not by libpng, and will in those
cases do nothing. The "seq" parameter is ignored if only one item
of the selected data type, such as PLTE, is allowed. If "seq" is not
-1, and multiple items are allowed for the data type identified in
the mask, such as text or sPLT, only the n'th item in the structure
is freed, where n is "seq".
by the user and not by libpng, and will in those cases do nothing.
The "seq" parameter is ignored if only one item of the selected data
type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
are allowed for the data type identified in the mask, such as text or
sPLT, only the n'th item in the structure is freed, where n is "seq".
If you allocated data such as a palette that you passed
in to libpng with png_set_*, you must not free it until just before the call to
If you allocated data such as a palette that you passed in to libpng
with png_set_*, you must not free it until just before the call to
png_destroy_write_struct().
The default behavior is only to free data that was allocated internally
@ -3219,16 +3316,18 @@ goes through callbacks that are user-settable. The default routines are
in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change
these functions, call the appropriate png_set_*_fn() function.
Memory allocation is done through the functions png_malloc()
and png_free(). These currently just call the standard C functions. If
your pointers can't access more then 64K at a time, you will want to set
MAXSEG_64K in zlib.h. Since it is unlikely that the method of handling
memory allocation on a platform will change between applications, these
functions must be modified in the library at compile time. If you prefer
to use a different method of allocating and freeing data, you can use
png_create_read_struct_2() or png_create_write_struct_2() to register
your own functions as described above.
These functions also provide a void pointer that can be retrieved via
Memory allocation is done through the functions png_malloc(), png_calloc(),
and png_free(). These currently just call the standard C functions.
png_calloc() calls png_malloc() and then png_memset() to clear the newly
allocated memory to zero. If your pointers can't access more then 64K
at a time, you will want to set MAXSEG_64K in zlib.h. Since it is
unlikely that the method of handling memory allocation on a platform
will change between applications, these functions must be modified in
the library at compile time. If you prefer to use a different method
of allocating and freeing data, you can use png_create_read_struct_2() or
png_create_write_struct_2() to register your own functions as described
above. These functions also provide a void pointer that can be retrieved
via
mem_ptr=png_get_mem_ptr(png_ptr);
@ -3320,10 +3419,10 @@ The motivation behind using setjmp() and longjmp() is the C++ throw and
catch exception handling methods. This makes the code much easier to write,
as there is no need to check every return code of every function call.
However, there are some uncertainties about the status of local variables
after a longjmp, so the user may want to be careful about doing anything after
setjmp returns non-zero besides returning itself. Consult your compiler
documentation for more details. For an alternative approach, you may wish
to use the "cexcept" facility (see http://cexcept.sourceforge.net).
after a longjmp, so the user may want to be careful about doing anything
after setjmp returns non-zero besides returning itself. Consult your
compiler documentation for more details. For an alternative approach, you
may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net).
.SS Custom chunks
@ -3335,15 +3434,14 @@ library code itself needs to know about interactions between your
chunk and existing `intrinsic' chunks.
If you need to write a new intrinsic chunk, first read the PNG
specification. Acquire a first level of
understanding of how it works. Pay particular attention to the
sections that describe chunk names, and look at how other chunks were
designed, so you can do things similarly. Second, check out the
sections of libpng that read and write chunks. Try to find a chunk
that is similar to yours and use it as a template. More details can
be found in the comments inside the code. It is best to handle unknown
chunks in a generic method, via callback functions, instead of by
modifying libpng functions.
specification. Acquire a first level of understanding of how it works.
Pay particular attention to the sections that describe chunk names,
and look at how other chunks were designed, so you can do things
similarly. Second, check out the sections of libpng that read and
write chunks. Try to find a chunk that is similar to yours and use
it as a template. More details can be found in the comments inside
the code. It is best to handle unknown chunks in a generic method,
via callback functions, instead of by modifying libpng functions.
If you wish to write your own transformation for the data, look through
the part of the code that does the transformations, and check out some of
@ -3520,14 +3618,14 @@ off en masse with compiler directives that define
PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
or all four,
along with directives to turn on any of the capabilities that you do
want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable
the extra transformations but still leave the library fully capable of reading
and writing PNG files with all known public chunks
Use of the PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive
produces a library that is incapable of reading or writing ancillary chunks.
If you are not using the progressive reading capability, you can
turn that off with PNG_NO_PROGRESSIVE_READ (don't confuse
this with the INTERLACING capability, which you'll still have).
want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra
transformations but still leave the library fully capable of reading
and writing PNG files with all known public chunks. Use of the
PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library
that is incapable of reading or writing ancillary chunks. If you are
not using the progressive reading capability, you can turn that off
with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING
capability, which you'll still have).
All the reading and writing specific code are in separate files, so the
linker should only grab the files it needs. However, if you want to
@ -3657,7 +3755,6 @@ application:
.SH VIII. (Omitted).
.SH IX. (Omitted)
.SH X. Detecting libpng
The png_get_io_ptr() function has been present since libpng-0.88, has never
@ -3710,6 +3807,15 @@ We use 3-space indentation, except for continued statements which
are usually indented the same as the first line of the statement
plus four more spaces.
For macro definitions we use 2-space indentation, always leaving the "#"
in the first column.
#ifndef PNG_NO_FEATURE
# ifndef PNG_FEATURE_SUPPORTED
# define PNG_FEATURE_SUPPORTED
# endif
#endif
Comments appear with the leading "/*" at the same indentation as
the statement that follows the comment:
@ -3774,23 +3880,24 @@ cast, nor do we put one between a function name and the
left parenthesis that follows it:
for (i = 2; i > 0; --i)
x[i] = a(x) + (int)b;
y[i] = a(x) + (int)b;
We prefer #ifdef and #ifndef to #if defined() and if !defined()
when there is only one macro being tested.
Other rules can be inferred by inspecting the libpng
source.
We do not use the TAB character for indentation in the C sources.
Other rules can be inferred by inspecting the libpng source.
.SH XIII. Y2K Compliance in libpng
September 10, 2009
November 18, 2009
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.0.50 are Y2K compliant. It is my belief that earlier
upward through 1.0.51rc01 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that
@ -4069,9 +4176,14 @@ the first widely used release:
1.2.39rc01 13 10239 12.so.0.39[.0]
1.0.48 10 10048 10.so.0.48[.0]
1.2.39 13 10239 12.so.0.39[.0]
1.2.40beta01 13 10240 12.so.0.40[.0]
1.2.40rc01 13 10240 12.so.0.40[.0]
1.0.49 10 10049 10.so.0.49[.0]
1.2.40 13 10240 12.so.0.40[.0]
1.0.50 10 10050 10.so.0.50[.0]
1.2.41beta01-18 13 10241 12.so.0.41[.0]
1.0.51rc01 10 10051 10.so.0.51[.0]
1.2.41rc01 13 10241 12.so.0.41[.0]
Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be
@ -4127,7 +4239,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.0.50 - September 10, 2009:
Libpng version 1.0.51rc01 - November 18, 2009:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -4150,7 +4262,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.0.50, September 10, 2009, are
libpng versions 1.2.6, August 15, 2004, through 1.0.51rc01, November 18, 2009, are
Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@ -4249,7 +4361,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
September 10, 2009
November 18, 2009
.\" end of man page

20
libpngpf.3
View File

@ -1,12 +1,16 @@
.TH LIBPNGPF 3 "September 10, 2009"
.TH LIBPNGPF 3 "November 18, 2009"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.50
libpng \- Portable Network Graphics (PNG) Reference Library 1.0.51rc01
(private functions)
.SH SYNOPSIS
\fB#include <png.h>\fP
\fI\fB
\fBvoid png_64bit_product (long \fP\fIv1\fP\fB, long \fP\fIv2\fP\fB, unsigned long \fI*hi_product,
\fBunsigned long \fI*lo_product\fP\fB);\fP
\fI\fB
\fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP
@ -27,6 +31,18 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.50
\fI\fB
\fBint png_check_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_fixed_point \fP\fIint_white_x\fP\fB, png_fixed_point \fP\fIint_white_y\fP\fB, png_fixed_point \fP\fIint_red_x\fP\fB, png_fixed_point \fP\fIint_red_y\fP\fB, png_fixed_point \fP\fIint_green_x\fP\fB, png_fixed_point \fP\fIint_green_y\fP\fB, png_fixed_point \fP\fIint_blue_x\fP\fB, png_fixed_point \fIint_blue_y\fP\fB);\fP
\fI\fB
\fI\fB
\fBvoid png_check_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP
\fI\fB
\fI\fB
\fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
\fI\fB

2
ltmain.sh
View File

@ -2560,7 +2560,7 @@ func_win32_libid ()
;;
*ar\ archive*) # could be an import, or static
if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null |
$EGREP 'file format pe-i386(.*architecture: i386)?' >/dev/null ; then
$EGREP 'file format (pe-i386(.*architecture: i386)?|pe-arm-wince)' >/dev/null ; then
win32_nmres=`eval $NM -f posix -A $1 |
$SED -n -e '
1,100{

2
png.5
View File

@ -1,4 +1,4 @@
.TH PNG 5 "September 10, 2009"
.TH PNG 5 "November 18, 2009"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION

230
png.c
View File

@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Last changed in libpng 1.2.39 [August 13, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -16,10 +16,11 @@
#include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_0_50 Your_png_h_is_not_version_1_0_50;
typedef version_1_0_51rc01 Your_png_h_is_not_version_1_0_51rc01;
/* Version information for C files. This had better match the version
* string defined in png.h. */
* string defined in png.h.
*/
#ifdef PNG_USE_GLOBAL_ARRAYS
/* png_libpng_ver was changed to a function in version 1.0.5c */
@ -95,9 +96,11 @@ PNG_CONST int FARDATA png_pass_dsp_mask[]
void PNGAPI
png_set_sig_bytes(png_structp png_ptr, int num_bytes)
{
png_debug(1, "in png_set_sig_bytes");
if (png_ptr == NULL)
return;
png_debug(1, "in png_set_sig_bytes");
if (num_bytes > 8)
png_error(png_ptr, "Too many bytes for PNG signature.");
@ -246,8 +249,10 @@ png_create_info_struct(png_structp png_ptr)
png_infop info_ptr;
png_debug(1, "in png_create_info_struct");
if (png_ptr == NULL)
return (NULL);
#ifdef PNG_USER_MEM_SUPPORTED
info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO,
png_ptr->malloc_fn, png_ptr->mem_ptr);
@ -269,10 +274,12 @@ void PNGAPI
png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
{
png_infop info_ptr = NULL;
png_debug(1, "in png_destroy_info_struct");
if (png_ptr == NULL)
return;
png_debug(1, "in png_destroy_info_struct");
if (info_ptr_ptr != NULL)
info_ptr = *info_ptr_ptr;
@ -309,11 +316,11 @@ png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
{
png_infop info_ptr = *ptr_ptr;
png_debug(1, "in png_info_init_3");
if (info_ptr == NULL)
return;
png_debug(1, "in png_info_init_3");
if (png_sizeof(png_info) > png_info_struct_size)
{
png_destroy_struct(info_ptr);
@ -331,8 +338,10 @@ png_data_freer(png_structp png_ptr, png_infop info_ptr,
int freer, png_uint_32 mask)
{
png_debug(1, "in png_data_freer");
if (png_ptr == NULL || info_ptr == NULL)
return;
if (freer == PNG_DESTROY_WILL_FREE_DATA)
info_ptr->free_me |= mask;
else if (freer == PNG_USER_WILL_FREE_DATA)
@ -348,10 +357,11 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
int num)
{
png_debug(1, "in png_free_data");
if (png_ptr == NULL || info_ptr == NULL)
return;
#if defined(PNG_TEXT_SUPPORTED)
#ifdef PNG_TEXT_SUPPORTED
/* Free text item num or (if num == -1) all text items */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
@ -379,7 +389,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
}
#endif
#if defined(PNG_tRNS_SUPPORTED)
#ifdef PNG_tRNS_SUPPORTED
/* Free any tRNS entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
@ -396,7 +406,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
}
#endif
#if defined(PNG_sCAL_SUPPORTED)
#ifdef PNG_sCAL_SUPPORTED
/* Free any sCAL entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
@ -414,7 +424,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
}
#endif
#if defined(PNG_pCAL_SUPPORTED)
#ifdef PNG_pCAL_SUPPORTED
/* Free any pCAL entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
@ -441,7 +451,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
}
#endif
#if defined(PNG_iCCP_SUPPORTED)
#ifdef PNG_iCCP_SUPPORTED
/* Free any iCCP entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
@ -457,7 +467,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
}
#endif
#if defined(PNG_sPLT_SUPPORTED)
#ifdef PNG_sPLT_SUPPORTED
/* Free a given sPLT entry, or (if num == -1) all sPLT entries */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
@ -492,7 +502,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
}
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
if (png_ptr->unknown_chunk.data)
{
png_free(png_ptr, png_ptr->unknown_chunk.data);
@ -530,7 +540,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
}
#endif
#if defined(PNG_hIST_SUPPORTED)
#ifdef PNG_hIST_SUPPORTED
/* Free any hIST entry */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_HIST) & info_ptr->free_me)
@ -563,7 +573,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
info_ptr->num_palette = 0;
}
#if defined(PNG_INFO_IMAGE_SUPPORTED)
#ifdef PNG_INFO_IMAGE_SUPPORTED
/* Free any image bits attached to the info structure */
#ifdef PNG_FREE_ME_SUPPORTED
if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
@ -605,7 +615,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
if (png_ptr->num_chunk_list)
{
png_free(png_ptr, png_ptr->chunk_list);
@ -631,7 +641,7 @@ png_get_io_ptr(png_structp png_ptr)
}
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#if !defined(PNG_NO_STDIO)
#ifdef PNG_STDIO_SUPPORTED
/* Initialize the default input/output functions for the PNG file. If you
* use your own read or write routines, you can call either png_set_read_fn()
* or png_set_write_fn() instead of png_init_io(). If you have defined
@ -642,13 +652,15 @@ void PNGAPI
png_init_io(png_structp png_ptr, png_FILE_p fp)
{
png_debug(1, "in png_init_io");
if (png_ptr == NULL)
return;
png_ptr->io_ptr = (png_voidp)fp;
}
#endif
#if defined(PNG_TIME_RFC1123_SUPPORTED)
#ifdef PNG_TIME_RFC1123_SUPPORTED
/* Convert the supplied time into an RFC 1123 string suitable for use in
* a "Creation Time" or other text-based time string.
*/
@ -667,7 +679,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
png_sizeof(char)));
}
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
{
wchar_t time_buf[29];
wsprintf(time_buf, TEXT("%d %S %d %02d:%02d:%02d +0000"),
@ -705,10 +717,23 @@ png_charp PNGAPI
png_get_copyright(png_structp png_ptr)
{
png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
return ((png_charp) "\n libpng version 1.0.50 - September 10, 2009\n\
Copyright (c) 1998-2009 Glenn Randers-Pehrson\n\
Copyright (c) 1996-1997 Andreas Dilger\n\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
#ifdef PNG_STRING_COPYRIGHT
return PNG_STRING_COPYRIGHT
#else
#ifdef __STDC__
return ((png_charp) PNG_STRING_NEWLINE \
"libpng version 1.0.51rc01 - November 18, 2009" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2009 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE);
#else
return ((png_charp) "libpng version 1.0.51rc01 - November 18, 2009\
Copyright (c) 1998-2009 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
#endif
#endif
}
/* The following return the library version as a short string in the
@ -740,11 +765,15 @@ png_get_header_version(png_structp png_ptr)
{
/* Returns longer string containing both version and date */
png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */
#ifdef __STDC__
return ((png_charp) PNG_HEADER_VERSION_STRING
#ifndef PNG_READ_SUPPORTED
" (NO READ SUPPORT)"
#endif
"\n");
PNG_STRING_NEWLINE);
#else
return ((png_charp) PNG_HEADER_VERSION_STRING);
#endif
}
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
@ -785,7 +814,7 @@ png_access_version_number(void)
#if defined(PNG_READ_SUPPORTED) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
#if !defined(PNG_1_0_X)
#ifndef PNG_1_0_X
/* This function was added to libpng 1.2.0 */
int PNGAPI
png_mmx_support(void)
@ -810,8 +839,8 @@ png_convert_size(size_t size)
#endif /* PNG_SIZE_T */
/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */
#if defined(PNG_cHRM_SUPPORTED)
#if !defined(PNG_NO_CHECK_cHRM)
#ifdef PNG_cHRM_SUPPORTED
#ifdef PNG_CHECK_cHRM_SUPPORTED
/*
* Multiply two 32-bit numbers, V1 and V2, using 32-bit
@ -863,6 +892,7 @@ png_check_cHRM_fixed(png_structp png_ptr,
unsigned long xy_hi,xy_lo,yx_hi,yx_lo;
png_debug(1, "in function png_check_cHRM_fixed");
if (png_ptr == NULL)
return 0;
@ -921,6 +951,148 @@ png_check_cHRM_fixed(png_structp png_ptr,
return ret;
}
#endif /* NO_PNG_CHECK_cHRM */
#endif /* PNG_CHECK_cHRM_SUPPORTED */
#endif /* PNG_cHRM_SUPPORTED */
void /* PRIVATE */
png_check_IHDR(png_structp png_ptr,
png_uint_32 width, png_uint_32 height, int bit_depth,
int color_type, int interlace_type, int compression_type,
int filter_type)
{
int error = 0;
/* Check for width and height valid values */
if (width == 0)
{
png_warning(png_ptr, "Image width is zero in IHDR");
error = 1;
}
if (height == 0)
{
png_warning(png_ptr, "Image height is zero in IHDR");
error = 1;
}
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (width > png_ptr->user_width_max || width > PNG_USER_WIDTH_MAX)
#else
if (width > PNG_USER_WIDTH_MAX)
#endif
{
png_warning(png_ptr, "Image width exceeds user limit in IHDR");
error = 1;
}
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (height > png_ptr->user_height_max || height > PNG_USER_HEIGHT_MAX)
#else
if (height > PNG_USER_HEIGHT_MAX)
#endif
{
png_warning(png_ptr, "Image height exceeds user limit in IHDR");
error = 1;
}
if (width > PNG_UINT_31_MAX)
{
png_warning(png_ptr, "Invalid image width in IHDR");
error = 1;
}
if ( height > PNG_UINT_31_MAX)
{
png_warning(png_ptr, "Invalid image height in IHDR");
error = 1;
}
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 */
if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
bit_depth != 8 && bit_depth != 16)
{
png_warning(png_ptr, "Invalid bit depth in IHDR");
error = 1;
}
if (color_type < 0 || color_type == 1 ||
color_type == 5 || color_type > 6)
{
png_warning(png_ptr, "Invalid color type in IHDR");
error = 1;
}
if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
((color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
{
png_warning(png_ptr, "Invalid color type/bit depth combination in IHDR");
error = 1;
}
if (interlace_type >= PNG_INTERLACE_LAST)
{
png_warning(png_ptr, "Unknown interlace method in IHDR");
error = 1;
}
if (compression_type != PNG_COMPRESSION_TYPE_BASE)
{
png_warning(png_ptr, "Unknown compression method in IHDR");
error = 1;
}
#ifdef PNG_MNG_FEATURES_SUPPORTED
/* Accept filter_method 64 (intrapixel differencing) only if
* 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
* 2. Libpng did not read a PNG signature (this filter_method is only
* used in PNG datastreams that are embedded in MNG datastreams) and
* 3. The application called png_permit_mng_features with a mask that
* included PNG_FLAG_MNG_FILTER_64 and
* 4. The filter_method is 64 and
* 5. The color_type is RGB or RGBA
*/
if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) &&
png_ptr->mng_features_permitted)
png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
if (filter_type != PNG_FILTER_TYPE_BASE)
{
if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) &&
(color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
{
png_warning(png_ptr, "Unknown filter method in IHDR");
error = 1;
}
if (png_ptr->mode & PNG_HAVE_PNG_SIGNATURE)
{
png_warning(png_ptr, "Invalid filter method in IHDR");
error = 1;
}
}
#else
if (filter_type != PNG_FILTER_TYPE_BASE)
{
png_warning(png_ptr, "Unknown filter method in IHDR");
error = 1;
}
#endif
if (error == 1)
png_error(png_ptr, "Invalid IHDR data");
}
#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */

1145
png.h
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File diff suppressed because it is too large Load Diff

264
pngconf.h
View File

@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng version 1.0.50 - September 10, 2009
* libpng version 1.0.51rc01 - November 18, 2009
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -34,6 +34,14 @@
#endif
#endif
#ifdef PNG_1_0_X
# ifndef PNG_iTXt_SUPPORTED
# ifndef PNG_NO_iTXt
# define PNG_NO_iTXt
# endif
# endif
#endif
/*
* Added at libpng-1.2.8
*
@ -109,8 +117,33 @@
# define PNG_WRITE_SUPPORTED
#endif
/* Enabled in 1.2.41. */
#ifdef PNG_ALLOW_BENIGN_ERRORS
# define png_benign_error png_warning
# define png_chunk_benign_error png_chunk_warning
#else
# ifndef PNG_BENIGN_ERRORS_SUPPORTED
# define png_benign_error png_error
# define png_chunk_benign_error png_chunk_error
# endif
#endif
/* Added in libpng-1.2.41 */
#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
# define PNG_WARNINGS_SUPPORTED
#endif
#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
# define PNG_ERROR_TEXT_SUPPORTED
#endif
#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
# define PNG_CHECK_cHRM_SUPPORTED
#endif
/* Enabled by default in 1.2.0. You can disable this if you don't need to
support PNGs that are embedded in MNG datastreams */
* support PNGs that are embedded in MNG datastreams
*/
#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
# ifndef PNG_MNG_FEATURES_SUPPORTED
# define PNG_MNG_FEATURES_SUPPORTED
@ -168,44 +201,44 @@
* PNG_BUILD_DLL and PNG_STATIC because those change some defaults
* such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
*/
#if defined(__CYGWIN__)
# if defined(ALL_STATIC)
# if defined(PNG_BUILD_DLL)
#ifdef __CYGWIN__
# ifdef ALL_STATIC
# ifdef PNG_BUILD_DLL
# undef PNG_BUILD_DLL
# endif
# if defined(PNG_USE_DLL)
# ifdef PNG_USE_DLL
# undef PNG_USE_DLL
# endif
# if defined(PNG_DLL)
# ifdef PNG_DLL
# undef PNG_DLL
# endif
# if !defined(PNG_STATIC)
# ifndef PNG_STATIC
# define PNG_STATIC
# endif
# else
# if defined (PNG_BUILD_DLL)
# if defined(PNG_STATIC)
# ifdef PNG_BUILD_DLL
# ifdef PNG_STATIC
# undef PNG_STATIC
# endif
# if defined(PNG_USE_DLL)
# ifdef PNG_USE_DLL
# undef PNG_USE_DLL
# endif
# if !defined(PNG_DLL)
# ifndef PNG_DLL
# define PNG_DLL
# endif
# else
# if defined(PNG_STATIC)
# if defined(PNG_USE_DLL)
# ifdef PNG_STATIC
# ifdef PNG_USE_DLL
# undef PNG_USE_DLL
# endif
# if defined(PNG_DLL)
# ifdef PNG_DLL
# undef PNG_DLL
# endif
# else
# if !defined(PNG_USE_DLL)
# ifndef PNG_USE_DLL
# define PNG_USE_DLL
# endif
# if !defined(PNG_DLL)
# ifndef PNG_DLL
# define PNG_DLL
# endif
# endif
@ -226,7 +259,11 @@
* #define PNG_NO_STDIO
*/
#if defined(_WIN32_WCE)
#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
# define PNG_STDIO_SUPPORTED
#endif
#ifdef _WIN32_WCE
# include <windows.h>
/* Console I/O functions are not supported on WindowsCE */
# define PNG_NO_CONSOLE_IO
@ -255,12 +292,16 @@
# endif
# endif
# else
# if !defined(_WIN32_WCE)
# ifndef _WIN32_WCE
/* "stdio.h" functions are not supported on WindowsCE */
# include <stdio.h>
# endif
# endif
#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
# define PNG_CONSOLE_IO_SUPPORTED
#endif
/* This macro protects us against machines that don't have function
* prototypes (ie K&R style headers). If your compiler does not handle
* function prototypes, define this macro and use the included ansi2knr.
@ -372,8 +413,8 @@
* them inside an appropriate ifdef/endif pair for portability.
*/
#if defined(PNG_FLOATING_POINT_SUPPORTED)
# if defined(MACOS)
#ifdef PNG_FLOATING_POINT_SUPPORTED
# ifdef MACOS
/* We need to check that <math.h> hasn't already been included earlier
* as it seems it doesn't agree with <fp.h>, yet we should really use
* <fp.h> if possible.
@ -583,18 +624,22 @@
# ifndef PNG_NO_READ_BACKGROUND
# define PNG_READ_BACKGROUND_SUPPORTED
# endif
#ifndef PNG_1_0_X
# ifndef PNG_NO_READ_16_TO_8
# define PNG_READ_16_TO_8_SUPPORTED
# endif
#endif
# ifndef PNG_NO_READ_FILLER
# define PNG_READ_FILLER_SUPPORTED
# endif
# ifndef PNG_NO_READ_GAMMA
# define PNG_READ_GAMMA_SUPPORTED
# endif
#ifndef PNG_1_0_X
# ifndef PNG_NO_READ_GRAY_TO_RGB
# define PNG_READ_GRAY_TO_RGB_SUPPORTED
# endif
#endif
# ifndef PNG_NO_READ_SWAP_ALPHA
# define PNG_READ_SWAP_ALPHA_SUPPORTED
# endif
@ -612,11 +657,20 @@
# endif
#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
#if !defined(PNG_NO_PROGRESSIVE_READ) && \
!defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive */
# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
#endif /* about interlacing capability! You'll */
/* still have interlacing unless you change the following line: */
!defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
#endif /* about interlacing capability! You'll */
/* still have interlacing unless you change the following define: */
#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
#if !defined(PNG_NO_SEQUENTIAL_READ) && \
!defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
!defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
# define PNG_SEQUENTIAL_READ_SUPPORTED
#endif
#define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
@ -668,9 +722,11 @@
# ifndef PNG_NO_WRITE_SWAP_ALPHA
# define PNG_WRITE_SWAP_ALPHA_SUPPORTED
# endif
#ifndef PNG_1_0_X
# ifndef PNG_NO_WRITE_INVERT_ALPHA
# define PNG_WRITE_INVERT_ALPHA_SUPPORTED
# endif
#endif
# ifndef PNG_NO_WRITE_USER_TRANSFORM
# define PNG_WRITE_USER_TRANSFORM_SUPPORTED
# endif
@ -702,6 +758,7 @@
#endif /* PNG_WRITE_SUPPORTED */
#define PNG_NO_ERROR_NUMBERS
#ifndef PNG_1_0_X
# ifndef PNG_NO_ERROR_NUMBERS
# define PNG_ERROR_NUMBERS_SUPPORTED
@ -762,7 +819,7 @@
# endif
# endif
# if defined(__APPLE__)
# ifdef __APPLE__
# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
# define PNG_NO_MMX_CODE
# endif
@ -781,19 +838,20 @@
#endif
/* end of obsolete code to be removed from libpng-1.4.0 */
#if !defined(PNG_1_0_X)
/* Added at libpng-1.2.0 */
#ifndef PNG_1_0_X
#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
# define PNG_USER_MEM_SUPPORTED
#endif
#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
#ifndef PNG_1_0_X
# ifndef PNG_SET_USER_LIMITS_SUPPORTED
# ifndef PNG_NO_SET_USER_LIMITS
# 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
@ -806,6 +864,27 @@
# define PNG_USER_HEIGHT_MAX 1000000L
#endif
#ifndef PNG_1_0_X
/* Added at libpng-1.2.41 */
#ifndef PNG_USER_CHUNK_CACHE_MAX
# define PNG_USER_CHUNK_CACHE_MAX 0x7fffffffL
#endif
#endif
#ifndef PNG_LITERAL_SHARP
# define PNG_LITERAL_SHARP 0x23
#endif
#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
#endif
#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
#endif
/* Added at libpng-1.2.34 */
#ifndef PNG_STRING_NEWLINE
#define PNG_STRING_NEWLINE "\n"
#endif
/* These are currently experimental features, define them if you want */
@ -831,6 +910,11 @@
#define PNG_NO_POINTER_INDEXING
*/
#if !defined(PNG_NO_POINTER_INDEXING) && \
!defined(PNG_POINTER_INDEXING_SUPPORTED)
# define PNG_POINTER_INDEXING_SUPPORTED
#endif
/* These functions are turned off by default, as they will be phased out. */
/*
#define PNG_USELESS_TESTS_SUPPORTED
@ -1089,8 +1173,23 @@
# endif
#endif
#ifdef PNG_WRITE_tIME_SUPPORTED
# ifndef PNG_NO_CONVERT_tIME
# ifndef _WIN32_WCE
/* The "tm" structure is not supported on WindowsCE */
# ifndef PNG_CONVERT_tIME_SUPPORTED
# define PNG_CONVERT_tIME_SUPPORTED
# endif
# endif
# endif
#endif
#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
#if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
# define PNG_WRITE_FILTER_SUPPORTED
#endif
#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
@ -1113,12 +1212,10 @@
# define PNG_INFO_IMAGE_SUPPORTED
#endif
/* need the time information for reading tIME chunks */
#if defined(PNG_tIME_SUPPORTED)
# if !defined(_WIN32_WCE)
/* Need the time information for converting tIME chunks */
#ifdef PNG_CONVERT_tIME_SUPPORTED
/* "time.h" functions are not supported on WindowsCE */
# include <time.h>
# endif
#endif
/* Some typedefs to get us started. These should be safe on most of the
@ -1187,8 +1284,8 @@ typedef unsigned char png_byte;
*/
/* MSC Medium model */
#if defined(FAR)
# if defined(M_I86MM)
#ifdef FAR
# ifdef M_I86MM
# define USE_FAR_KEYWORD
# define FARDATA FAR
# include <dos.h>
@ -1221,7 +1318,7 @@ typedef char FAR * png_charp;
typedef png_fixed_point FAR * png_fixed_point_p;
#ifndef PNG_NO_STDIO
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
typedef HANDLE png_FILE_p;
#else
typedef FILE * png_FILE_p;
@ -1285,17 +1382,17 @@ typedef z_stream FAR * png_zstreamp;
* When building a static lib, default to no GLOBAL ARRAYS, but allow
* command-line override
*/
#if defined(__CYGWIN__)
# if !defined(PNG_STATIC)
# if defined(PNG_USE_GLOBAL_ARRAYS)
#ifdef __CYGWIN__
# ifndef PNG_STATIC
# ifdef PNG_USE_GLOBAL_ARRAYS
# undef PNG_USE_GLOBAL_ARRAYS
# endif
# if !defined(PNG_USE_LOCAL_ARRAYS)
# ifndef PNG_USE_LOCAL_ARRAYS
# define PNG_USE_LOCAL_ARRAYS
# endif
# else
# if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
# if defined(PNG_USE_GLOBAL_ARRAYS)
# ifdef PNG_USE_GLOBAL_ARRAYS
# undef PNG_USE_GLOBAL_ARRAYS
# endif
# endif
@ -1318,7 +1415,7 @@ typedef z_stream FAR * png_zstreamp;
# endif
#endif
#if defined(__CYGWIN__)
#ifdef __CYGWIN__
# undef PNGAPI
# define PNGAPI __cdecl
# undef PNG_IMPEXP
@ -1359,7 +1456,7 @@ typedef z_stream FAR * png_zstreamp;
# define PNG_IMPEXP
# endif
# if !defined(PNG_IMPEXP)
# ifndef PNG_IMPEXP
# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
@ -1370,7 +1467,7 @@ typedef z_stream FAR * png_zstreamp;
# define PNG_EXPORT PNG_EXPORT_TYPE1
# else
# define PNG_EXPORT PNG_EXPORT_TYPE2
# if defined(PNG_BUILD_DLL)
# ifdef PNG_BUILD_DLL
# define PNG_IMPEXP __export
# else
# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
@ -1380,8 +1477,8 @@ typedef z_stream FAR * png_zstreamp;
# endif
# endif
# if !defined(PNG_IMPEXP)
# if defined(PNG_BUILD_DLL)
# ifndef PNG_IMPEXP
# ifdef PNG_BUILD_DLL
# define PNG_IMPEXP __declspec(dllexport)
# else
# define PNG_IMPEXP __declspec(dllimport)
@ -1427,6 +1524,64 @@ typedef z_stream FAR * png_zstreamp;
# endif
#endif
/* Support for compiler specific function attributes. These are used
* so that where compiler support is available incorrect use of API
* functions in png.h will generate compiler warnings. Added at libpng
* version 1.2.41.
*/
#ifdef __GNUC__
# ifndef PNG_USE_RESULT
# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
# endif
# ifndef PNG_NORETURN
# define PNG_NORETURN __attribute__((__noreturn__))
# endif
# ifndef PNG_ALLOCATED
# define PNG_ALLOCATED __attribute__((__malloc__))
# endif
# ifndef PNG_CONFIGURE_LIBPNG
/* This specifically protects structure members that should only be
* accessed from within the library, therefore should be empty during
* a library build.
*/
# ifndef PNG_DEPRECATED
# define PNG_DEPRECATED __attribute__((__deprecated__))
# endif
# ifndef PNG_DEPSTRUCT
# define PNG_DEPSTRUCT __attribute__((__deprecated__))
# endif
# ifndef PNG_PRIVATE
#if 0 /* Doesn't work so we use deprecated instead*/
# define PNG_PRIVATE \
__attribute__((warning("This function is not exported by libpng.")))
#else
# define PNG_PRIVATE \
__attribute__((__deprecated__))
#endif
# endif
# endif
#endif
#ifndef PNG_DEPRECATED
# define PNG_DEPRECATED /* Use of this function is deprecated */
#endif
#ifndef PNG_USE_RESULT
# define PNG_USE_RESULT /* The result of this function must be checked */
#endif
#ifndef PNG_NORETURN
# define PNG_NORETURN /* This function does not return */
#endif
#ifndef PNG_ALLOCATED
# define PNG_ALLOCATED /* The result of the function is new memory */
#endif
#ifndef PNG_DEPSTRUCT
# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
#endif
#ifndef PNG_PRIVATE
# define PNG_PRIVATE /* This is a private libpng function */
#endif
/* User may want to use these so they are not in PNG_INTERNAL. Any library
* functions that are passed far data must be model independent.
*/
@ -1442,8 +1597,8 @@ typedef z_stream FAR * png_zstreamp;
(LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
#endif
#if defined(USE_FAR_KEYWORD) /* memory model independent fns */
/* use this to make far-to-near assignments */
#ifdef USE_FAR_KEYWORD /* memory model independent fns */
/* Use this to make far-to-near assignments */
# define CHECK 1
# define NOCHECK 0
# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
@ -1453,7 +1608,7 @@ typedef z_stream FAR * png_zstreamp;
# define png_memcmp _fmemcmp /* SJT: added */
# define png_memcpy _fmemcpy
# define png_memset _fmemset
#else /* use the usual functions */
#else /* Use the usual functions */
# define CVT_PTR(ptr) (ptr)
# define CVT_PTR_NOCHECK(ptr) (ptr)
# ifndef PNG_NO_SNPRINTF
@ -1471,7 +1626,8 @@ typedef z_stream FAR * png_zstreamp;
* sprintf instead of snprintf exposes your application to accidental
* or malevolent buffer overflows. If you don't have snprintf()
* as a general rule you should provide one (you can get one from
* Portable OpenSSH). */
* Portable OpenSSH).
*/
# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \

73
pngerror.c
View File

@ -1,7 +1,7 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* Last changed in libpng 1.2.37 [June 4, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -22,19 +22,19 @@
static void /* PRIVATE */
png_default_error PNGARG((png_structp png_ptr,
png_const_charp error_message));
#ifndef PNG_NO_WARNINGS
png_const_charp error_message)) PNG_NORETURN;
#ifdef PNG_WARNINGS_SUPPORTED
static void /* PRIVATE */
png_default_warning PNGARG((png_structp png_ptr,
png_const_charp warning_message));
#endif /* PNG_NO_WARNINGS */
#endif /* PNG_WARNINGS_SUPPORTED */
/* This function is called whenever there is a fatal error. This function
* should not be changed. If there is a need to handle errors differently,
* you should supply a replacement error function and use png_set_error_fn()
* to replace the error function at run-time.
*/
#ifndef PNG_NO_ERROR_TEXT
#ifdef PNG_ERROR_TEXT_SUPPORTED
void PNGAPI
png_error(png_structp png_ptr, png_const_charp error_message)
{
@ -45,7 +45,7 @@ png_error(png_structp png_ptr, png_const_charp error_message)
if (png_ptr->flags&
(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
{
if (*error_message == '#')
if (*error_message == PNG_LITERAL_SHARP)
{
/* Strip "#nnnn " from beginning of error message. */
int offset;
@ -93,9 +93,9 @@ png_err(png_structp png_ptr)
use the default handler, which will not return. */
png_default_error(png_ptr, '\0');
}
#endif /* PNG_NO_ERROR_TEXT */
#endif /* PNG_ERROR_TEXT_SUPPORTED */
#ifndef PNG_NO_WARNINGS
#ifdef PNG_WARNINGS_SUPPORTED
/* This function is called whenever there is a non-fatal error. This function
* should not be changed. If there is a need to handle warnings differently,
* you should supply a replacement warning function and use
@ -112,7 +112,7 @@ png_warning(png_structp png_ptr, png_const_charp warning_message)
(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
#endif
{
if (*warning_message == '#')
if (*warning_message == PNG_LITERAL_SHARP)
{
for (offset = 1; offset < 15; offset++)
if (warning_message[offset] == ' ')
@ -125,8 +125,18 @@ png_warning(png_structp png_ptr, png_const_charp warning_message)
else
png_default_warning(png_ptr, warning_message + offset);
}
#endif /* PNG_NO_WARNINGS */
#endif /* PNG_WARNINGS_SUPPORTED */
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
void PNGAPI
png_benign_error(png_structp png_ptr, png_const_charp error_message)
{
if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
png_warning(png_ptr, error_message);
else
png_error(png_ptr, error_message);
}
#endif
/* These utilities are used internally to build an error message that relates
* to the current chunk. The chunk name comes from png_ptr->chunk_name,
@ -141,8 +151,7 @@ static PNG_CONST char png_digit[16] = {
};
#define PNG_MAX_ERROR_TEXT 64
#if !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT)
#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
static void /* PRIVATE */
png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
error_message)
@ -154,10 +163,10 @@ png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
int c = png_ptr->chunk_name[iin++];
if (isnonalpha(c))
{
buffer[iout++] = '[';
buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
buffer[iout++] = png_digit[(c & 0xf0) >> 4];
buffer[iout++] = png_digit[c & 0x0f];
buffer[iout++] = ']';
buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
}
else
{
@ -190,9 +199,9 @@ png_chunk_error(png_structp png_ptr, png_const_charp error_message)
}
}
#endif /* PNG_READ_SUPPORTED */
#endif /* !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT) */
#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
#ifndef PNG_NO_WARNINGS
#ifdef PNG_WARNINGS_SUPPORTED
void PNGAPI
png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
{
@ -205,8 +214,20 @@ png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
png_warning(png_ptr, msg);
}
}
#endif /* PNG_NO_WARNINGS */
#endif /* PNG_WARNINGS_SUPPORTED */
#ifdef PNG_READ_SUPPORTED
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
void PNGAPI
png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message)
{
if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
png_chunk_warning(png_ptr, error_message);
else
png_chunk_error(png_ptr, error_message);
}
#endif
#endif /* PNG_READ_SUPPORTED */
/* This is the default error handling function. Note that replacements for
* this function MUST NOT RETURN, or the program will likely crash. This
@ -216,9 +237,9 @@ png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
static void /* PRIVATE */
png_default_error(png_structp png_ptr, png_const_charp error_message)
{
#ifndef PNG_NO_CONSOLE_IO
#ifdef PNG_CONSOLE_IO_SUPPORTED
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
if (*error_message == '#')
if (*error_message == PNG_LITERAL_SHARP)
{
/* Strip "#nnnn " from beginning of error message. */
int offset;
@ -264,15 +285,15 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
longjmp(png_ptr->jmpbuf, 1);
# endif
}
#else
PNG_ABORT();
#endif
#ifdef PNG_NO_CONSOLE_IO
/* Here if not setjmp support or if png_ptr is null. */
PNG_ABORT();
#ifndef PNG_CONSOLE_IO_SUPPORTED
error_message = error_message; /* Make compiler happy */
#endif
}
#ifndef PNG_NO_WARNINGS
#ifdef PNG_WARNINGS_SUPPORTED
/* This function is called when there is a warning, but the library thinks
* it can continue anyway. Replacement functions don't have to do anything
* here if you don't want them to. In the default configuration, png_ptr is
@ -281,9 +302,9 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
static void /* PRIVATE */
png_default_warning(png_structp png_ptr, png_const_charp warning_message)
{
#ifndef PNG_NO_CONSOLE_IO
#ifdef PNG_CONSOLE_IO_SUPPORTED
# ifdef PNG_ERROR_NUMBERS_SUPPORTED
if (*warning_message == '#')
if (*warning_message == PNG_LITERAL_SHARP)
{
int offset;
char warning_number[16];
@ -318,7 +339,7 @@ png_default_warning(png_structp png_ptr, png_const_charp warning_message)
#endif
png_ptr = png_ptr; /* Make compiler happy */
}
#endif /* PNG_NO_WARNINGS */
#endif /* PNG_WARNINGS_SUPPORTED */
/* This function is called when the application wants to use another method
* of handling errors and warnings. Note that the error function MUST NOT

6
pnggccrd.c
View File

@ -17,9 +17,9 @@ int PNGAPI
png_dummy_mmx_support(void)
{
int result;
#if defined(PNG_MMX_CODE_SUPPORTED) // superfluous, but what the heck
#ifdef PNG_MMX_CODE_SUPPORTED // superfluous, but what the heck
__asm__ __volatile__ (
#if defined(__x86_64__)
#ifdef __x86_64__
"pushq %%rbx \n\t" // rbx gets clobbered by CPUID instruction
"pushq %%rcx \n\t" // so does rcx...
"pushq %%rdx \n\t" // ...and rdx (but rcx & rdx safe on Linux)
@ -71,7 +71,7 @@ png_dummy_mmx_support(void)
"0: \n\t" // .NOT_SUPPORTED: target label for jump instructions
"movl $0, %%eax \n\t" // set return value to 0
"1: \n\t" // .RETURN: target label for jump instructions
#if defined(__x86_64__)
#ifdef __x86_64__
"popq %%rdx \n\t" // restore rdx
"popq %%rcx \n\t" // restore rcx
"popq %%rbx \n\t" // restore rbx

163
pngget.c
View File

@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct
*
* Last changed in libpng 1.2.37 [June 4, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -36,7 +36,7 @@ png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
return(0);
}
#if defined(PNG_INFO_IMAGE_SUPPORTED)
#ifdef PNG_INFO_IMAGE_SUPPORTED
png_bytepp PNGAPI
png_get_rows(png_structp png_ptr, png_infop info_ptr)
{
@ -117,7 +117,7 @@ png_uint_32 PNGAPI
png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_pHYs_SUPPORTED)
#ifdef PNG_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter");
@ -138,7 +138,7 @@ png_uint_32 PNGAPI
png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_pHYs_SUPPORTED)
#ifdef PNG_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter");
@ -159,7 +159,7 @@ png_uint_32 PNGAPI
png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_pHYs_SUPPORTED)
#ifdef PNG_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
@ -182,13 +182,15 @@ float PNGAPI
png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_pHYs_SUPPORTED)
#ifdef PNG_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
if (info_ptr->x_pixels_per_unit == 0)
return ((float)0.0);
else
return ((float)((float)info_ptr->y_pixels_per_unit
/(float)info_ptr->x_pixels_per_unit));
@ -204,7 +206,7 @@ png_int_32 PNGAPI
png_get_x_offset_microns(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_oFFs_SUPPORTED)
#ifdef PNG_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
{
@ -227,7 +229,7 @@ png_get_y_offset_microns(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_oFFs_SUPPORTED)
#ifdef PNG_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
{
png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
@ -249,7 +251,7 @@ png_get_x_offset_pixels(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_oFFs_SUPPORTED)
#ifdef PNG_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
{
png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
@ -271,7 +273,7 @@ png_get_y_offset_pixels(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
#if defined(PNG_oFFs_SUPPORTED)
#ifdef PNG_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
{
png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
@ -324,7 +326,7 @@ png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr)
*.00003937);
}
#if defined(PNG_pHYs_SUPPORTED)
#ifdef PNG_pHYs_SUPPORTED
png_uint_32 PNGAPI
png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
@ -334,6 +336,7 @@ png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
{
png_debug1(1, "in %s retrieval function", "pHYs");
if (res_x != NULL)
{
*res_x = info_ptr->x_pixels_per_unit;
@ -382,7 +385,7 @@ png_get_signature(png_structp png_ptr, png_infop info_ptr)
return (NULL);
}
#if defined(PNG_bKGD_SUPPORTED)
#ifdef PNG_bKGD_SUPPORTED
png_uint_32 PNGAPI
png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
png_color_16p *background)
@ -391,6 +394,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
&& background != NULL)
{
png_debug1(1, "in %s retrieval function", "bKGD");
*background = &(info_ptr->background);
return (PNG_INFO_bKGD);
}
@ -398,7 +402,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_cHRM_SUPPORTED)
#ifdef PNG_cHRM_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
@ -408,6 +412,7 @@ png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
{
png_debug1(1, "in %s retrieval function", "cHRM");
if (white_x != NULL)
*white_x = (double)info_ptr->x_white;
if (white_y != NULL)
@ -436,9 +441,10 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
png_fixed_point *blue_x, png_fixed_point *blue_y)
{
png_debug1(1, "in %s retrieval function", "cHRM");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
{
png_debug1(1, "in %s retrieval function", "cHRM");
if (white_x != NULL)
*white_x = info_ptr->int_x_white;
if (white_y != NULL)
@ -462,15 +468,16 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
#endif
#endif
#if defined(PNG_gAMA_SUPPORTED)
#ifdef PNG_gAMA_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
{
png_debug1(1, "in %s retrieval function", "gAMA");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
&& file_gamma != NULL)
{
png_debug1(1, "in %s retrieval function", "gAMA");
*file_gamma = (double)info_ptr->gamma;
return (PNG_INFO_gAMA);
}
@ -482,10 +489,11 @@ png_uint_32 PNGAPI
png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
png_fixed_point *int_file_gamma)
{
png_debug1(1, "in %s retrieval function", "gAMA");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
&& int_file_gamma != NULL)
{
png_debug1(1, "in %s retrieval function", "gAMA");
*int_file_gamma = info_ptr->int_gamma;
return (PNG_INFO_gAMA);
}
@ -494,14 +502,15 @@ png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
#endif
#endif
#if defined(PNG_sRGB_SUPPORTED)
#ifdef PNG_sRGB_SUPPORTED
png_uint_32 PNGAPI
png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
{
png_debug1(1, "in %s retrieval function", "sRGB");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
&& file_srgb_intent != NULL)
{
png_debug1(1, "in %s retrieval function", "sRGB");
*file_srgb_intent = (int)info_ptr->srgb_intent;
return (PNG_INFO_sRGB);
}
@ -509,16 +518,17 @@ png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
}
#endif
#if defined(PNG_iCCP_SUPPORTED)
#ifdef PNG_iCCP_SUPPORTED
png_uint_32 PNGAPI
png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
png_charpp name, int *compression_type,
png_charpp profile, png_uint_32 *proflen)
{
png_debug1(1, "in %s retrieval function", "iCCP");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
&& name != NULL && profile != NULL && proflen != NULL)
{
png_debug1(1, "in %s retrieval function", "iCCP");
*name = info_ptr->iccp_name;
*profile = info_ptr->iccp_profile;
/* Compression_type is a dummy so the API won't have to change
@ -532,7 +542,7 @@ png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_sPLT_SUPPORTED)
#ifdef PNG_sPLT_SUPPORTED
png_uint_32 PNGAPI
png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
png_sPLT_tpp spalettes)
@ -546,14 +556,15 @@ png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_hIST_SUPPORTED)
#ifdef PNG_hIST_SUPPORTED
png_uint_32 PNGAPI
png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
{
png_debug1(1, "in %s retrieval function", "hIST");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
&& hist != NULL)
{
png_debug1(1, "in %s retrieval function", "hIST");
*hist = info_ptr->hist;
return (PNG_INFO_hIST);
}
@ -568,62 +579,48 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
int *filter_type)
{
if (png_ptr != NULL && info_ptr != NULL && width != NULL && height != NULL &&
bit_depth != NULL && color_type != NULL)
{
png_debug1(1, "in %s retrieval function", "IHDR");
*width = info_ptr->width;
*height = info_ptr->height;
*bit_depth = info_ptr->bit_depth;
if (info_ptr->bit_depth < 1 || info_ptr->bit_depth > 16)
png_error(png_ptr, "Invalid bit depth");
png_debug1(1, "in %s retrieval function", "IHDR");
*color_type = info_ptr->color_type;
if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
height == NULL || bit_depth == NULL || color_type == NULL)
return (0);
if (info_ptr->color_type > 6)
png_error(png_ptr, "Invalid color type");
*width = info_ptr->width;
*height = info_ptr->height;
*bit_depth = info_ptr->bit_depth;
*color_type = info_ptr->color_type;
if (compression_type != NULL)
*compression_type = info_ptr->compression_type;
if (compression_type != NULL)
*compression_type = info_ptr->compression_type;
if (filter_type != NULL)
*filter_type = info_ptr->filter_type;
if (filter_type != NULL)
*filter_type = info_ptr->filter_type;
if (interlace_type != NULL)
*interlace_type = info_ptr->interlace_type;
if (interlace_type != NULL)
*interlace_type = info_ptr->interlace_type;
/* Check for potential overflow of rowbytes */
if (*width == 0 || *width > PNG_UINT_31_MAX)
png_error(png_ptr, "Invalid image width");
/* This is redundant if we can be sure that the info_ptr values were all
* assigned in png_set_IHDR(). We do the check anyhow in case an
* application has ignored our advice not to mess with the members
* of info_ptr directly.
*/
png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
info_ptr->compression_type, info_ptr->filter_type);
if (*height == 0 || *height > PNG_UINT_31_MAX)
png_error(png_ptr, "Invalid image height");
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_warning(png_ptr,
"Width too large for libpng to process image data.");
}
return (1);
}
return (0);
return (1);
}
#if defined(PNG_oFFs_SUPPORTED)
#ifdef PNG_oFFs_SUPPORTED
png_uint_32 PNGAPI
png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
{
png_debug1(1, "in %s retrieval function", "oFFs");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
&& offset_x != NULL && offset_y != NULL && unit_type != NULL)
{
png_debug1(1, "in %s retrieval function", "oFFs");
*offset_x = info_ptr->x_offset;
*offset_y = info_ptr->y_offset;
*unit_type = (int)info_ptr->offset_unit_type;
@ -633,17 +630,18 @@ png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_pCAL_SUPPORTED)
#ifdef PNG_pCAL_SUPPORTED
png_uint_32 PNGAPI
png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
png_charp *units, png_charpp *params)
{
png_debug1(1, "in %s retrieval function", "pCAL");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
&& purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
nparams != NULL && units != NULL && params != NULL)
{
png_debug1(1, "in %s retrieval function", "pCAL");
*purpose = info_ptr->pcal_purpose;
*X0 = info_ptr->pcal_X0;
*X1 = info_ptr->pcal_X1;
@ -657,7 +655,7 @@ png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_sCAL_SUPPORTED)
#ifdef PNG_sCAL_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_sCAL(png_structp png_ptr, png_infop info_ptr,
@ -693,18 +691,18 @@ png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr,
#endif
#endif
#if defined(PNG_pHYs_SUPPORTED)
#ifdef PNG_pHYs_SUPPORTED
png_uint_32 PNGAPI
png_get_pHYs(png_structp png_ptr, png_infop info_ptr,
png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
{
png_uint_32 retval = 0;
png_debug1(1, "in %s retrieval function", "pHYs");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs))
{
png_debug1(1, "in %s retrieval function", "pHYs");
if (res_x != NULL)
{
*res_x = info_ptr->x_pixels_per_unit;
@ -731,10 +729,11 @@ png_uint_32 PNGAPI
png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
int *num_palette)
{
png_debug1(1, "in %s retrieval function", "PLTE");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
&& palette != NULL)
{
png_debug1(1, "in %s retrieval function", "PLTE");
*palette = info_ptr->palette;
*num_palette = info_ptr->num_palette;
png_debug1(3, "num_palette = %d", *num_palette);
@ -743,14 +742,15 @@ png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
return (0);
}
#if defined(PNG_sBIT_SUPPORTED)
#ifdef PNG_sBIT_SUPPORTED
png_uint_32 PNGAPI
png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
{
png_debug1(1, "in %s retrieval function", "sBIT");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
&& sig_bit != NULL)
{
png_debug1(1, "in %s retrieval function", "sBIT");
*sig_bit = &(info_ptr->sig_bit);
return (PNG_INFO_sBIT);
}
@ -758,7 +758,7 @@ png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
}
#endif
#if defined(PNG_TEXT_SUPPORTED)
#ifdef PNG_TEXT_SUPPORTED
png_uint_32 PNGAPI
png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
int *num_text)
@ -783,14 +783,15 @@ png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
}
#endif
#if defined(PNG_tIME_SUPPORTED)
#ifdef PNG_tIME_SUPPORTED
png_uint_32 PNGAPI
png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
{
png_debug1(1, "in %s retrieval function", "tIME");
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
&& mod_time != NULL)
{
png_debug1(1, "in %s retrieval function", "tIME");
*mod_time = &(info_ptr->mod_time);
return (PNG_INFO_tIME);
}
@ -798,7 +799,7 @@ png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
}
#endif
#if defined(PNG_tRNS_SUPPORTED)
#ifdef PNG_tRNS_SUPPORTED
png_uint_32 PNGAPI
png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
png_bytep *trans, int *num_trans, png_color_16p *trans_values)
@ -807,6 +808,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
{
png_debug1(1, "in %s retrieval function", "tRNS");
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (trans != NULL)
@ -839,7 +841,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
png_uint_32 PNGAPI
png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
png_unknown_chunkpp unknowns)
@ -853,7 +855,7 @@ png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
png_byte PNGAPI
png_get_rgb_to_gray_status (png_structp png_ptr)
{
@ -861,7 +863,7 @@ png_get_rgb_to_gray_status (png_structp png_ptr)
}
#endif
#if defined(PNG_USER_CHUNKS_SUPPORTED)
#ifdef PNG_USER_CHUNKS_SUPPORTED
png_voidp PNGAPI
png_get_user_chunk_ptr(png_structp png_ptr)
{
@ -939,5 +941,4 @@ png_get_user_height_max (png_structp png_ptr)
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

22
pngmem.c
View File

@ -114,6 +114,16 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
* result, we would be truncating potentially larger memory requests
* (which should cause a fatal error) and introducing major problems.
*/
png_voidp PNGAPI
png_calloc(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
ret = (png_malloc(png_ptr, size));
if (ret != NULL)
png_memset(ret,0,(png_size_t)size);
return (ret);
}
png_voidp PNGAPI
png_malloc(png_structp png_ptr, png_uint_32 size)
@ -431,6 +441,16 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
* have the ability to do that.
*/
png_voidp PNGAPI
png_calloc(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
ret = (png_malloc(png_ptr, size));
if (ret != NULL)
png_memset(ret,0,(png_size_t)size);
return (ret);
}
png_voidp PNGAPI
png_malloc(png_structp png_ptr, png_uint_32 size)
@ -538,7 +558,7 @@ png_free_default(png_structp png_ptr, png_voidp ptr)
#endif /* Not Borland DOS special memory handler */
#if defined(PNG_1_0_X)
#ifdef PNG_1_0_X
# define png_malloc_warn png_malloc
#else
/* This function was added at libpng version 1.2.3. The png_malloc_warn()

100
pngpread.c
View File

@ -70,7 +70,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
break;
}
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
case PNG_READ_tEXt_MODE:
{
png_push_read_tEXt(png_ptr, info_ptr);
@ -78,7 +78,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
case PNG_READ_zTXt_MODE:
{
png_push_read_zTXt(png_ptr, info_ptr);
@ -86,7 +86,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
case PNG_READ_iTXt_MODE:
{
png_push_read_iTXt(png_ptr, info_ptr);
@ -154,58 +154,59 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
PNG_CONST PNG_IDAT;
PNG_CONST PNG_IEND;
PNG_CONST PNG_PLTE;
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_CONST PNG_bKGD;
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_CONST PNG_cHRM;
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_CONST PNG_gAMA;
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
PNG_CONST PNG_hIST;
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
PNG_CONST PNG_iCCP;
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_CONST PNG_iTXt;
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_CONST PNG_oFFs;
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_CONST PNG_pCAL;
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_CONST PNG_pHYs;
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_CONST PNG_sBIT;
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_CONST PNG_sCAL;
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_CONST PNG_sRGB;
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
PNG_CONST PNG_sPLT;
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_CONST PNG_tEXt;
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
PNG_CONST PNG_tIME;
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_CONST PNG_tRNS;
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_CONST PNG_zTXt;
#endif
#endif /* PNG_USE_LOCAL_ARRAYS */
/* First we make sure we have enough data for the 4 byte chunk name
* and the 4 byte chunk length before proceeding with decoding the
* chunk data. To fully decode each of these chunks, we also make
@ -334,7 +335,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
return;
}
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_gAMA, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -347,7 +348,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_sBIT, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -360,7 +361,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_cHRM, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -373,7 +374,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_sRGB, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -386,7 +387,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_iCCP, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -399,7 +400,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_sPLT, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -412,7 +413,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_tRNS, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -425,7 +426,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_bKGD, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -438,7 +439,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_hIST, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -451,7 +452,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_pHYs, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -464,7 +465,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_oFFs, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -477,7 +478,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_pCAL, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -490,7 +491,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_sCAL, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -503,7 +504,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -516,7 +517,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -529,7 +530,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -542,7 +543,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -859,7 +860,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
if (!(png_ptr->zstream.avail_out))
{
if ((
#if defined(PNG_READ_INTERLACING_SUPPORTED)
#ifdef PNG_READ_INTERLACING_SUPPORTED
png_ptr->interlaced && png_ptr->pass > 6) ||
(!png_ptr->interlaced &&
#endif
@ -902,7 +903,7 @@ png_push_process_row(png_structp png_ptr)
if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
png_do_read_transformations(png_ptr);
#if defined(PNG_READ_INTERLACING_SUPPORTED)
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Blow up interlaced rows to full size */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
@ -1114,7 +1115,7 @@ png_read_push_finish_row(png_structp png_ptr)
if (png_ptr->row_number < png_ptr->num_rows)
return;
#if defined(PNG_READ_INTERLACING_SUPPORTED)
#ifdef PNG_READ_INTERLACING_SUPPORTED
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
@ -1155,7 +1156,7 @@ png_read_push_finish_row(png_structp png_ptr)
#endif /* PNG_READ_INTERLACING_SUPPORTED */
}
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
void /* PRIVATE */
png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
length)
@ -1218,7 +1219,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
png_push_crc_finish(png_ptr);
#if defined(PNG_MAX_MALLOC_64K)
#ifdef PNG_MAX_MALLOC_64K
if (png_ptr->skip_length)
return;
#endif
@ -1253,7 +1254,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
void /* PRIVATE */
png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
length)
@ -1454,7 +1455,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
void /* PRIVATE */
png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
length)
@ -1521,7 +1522,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
png_push_crc_finish(png_ptr);
#if defined(PNG_MAX_MALLOC_64K)
#ifdef PNG_MAX_MALLOC_64K
if (png_ptr->skip_length)
return;
#endif
@ -1587,10 +1588,10 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
if (!(png_ptr->chunk_name[0] & 0x20))
{
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
PNG_HANDLE_CHUNK_ALWAYS
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
&& png_ptr->read_user_chunk_fn == NULL
#endif
)
@ -1600,7 +1601,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
info_ptr = info_ptr; /* To quiet some compiler warnings */
}
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
{
#ifdef PNG_MAX_MALLOC_64K
@ -1629,7 +1630,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
}
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
if (png_ptr->read_user_chunk_fn != NULL)
{
/* Callback to user unknown chunk handler */
@ -1694,6 +1695,7 @@ png_progressive_combine_row (png_structp png_ptr,
PNG_CONST int FARDATA png_pass_dsp_mask[7] =
{0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
#endif
if (png_ptr == NULL)
return;

421
pngread.c
View File

@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* Last changed in libpng 1.2.37 [June 4, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -16,7 +16,8 @@
#define PNG_INTERNAL
#include "png.h"
#if defined(PNG_READ_SUPPORTED)
#ifdef PNG_READ_SUPPORTED
/* Create a PNG structure for reading, and allocate any memory needed. */
png_structp PNGAPI
@ -51,6 +52,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
int i;
png_debug(1, "in png_create_read_struct");
#ifdef PNG_USER_MEM_SUPPORTED
png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
(png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
@ -62,8 +64,8 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
/* 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;
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
#endif
#ifdef PNG_SETJMP_SUPPORTED
@ -86,7 +88,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#ifdef USE_FAR_KEYWORD
png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf));
#endif
#endif
#endif /* PNG_SETJMP_SUPPORTED */
#ifdef PNG_USER_MEM_SUPPORTED
png_set_mem_fn(png_ptr, mem_ptr, malloc_fn, free_fn);
@ -96,48 +98,48 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
if (user_png_ver)
{
i = 0;
do
{
if (user_png_ver[i] != png_libpng_ver[i])
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
} while (png_libpng_ver[i++]);
}
else
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
i = 0;
do
{
if (user_png_ver[i] != png_libpng_ver[i])
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
} while (png_libpng_ver[i++]);
}
else
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
{
/* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
* we must recompile any applications that use any older library version.
* For versions after libpng 1.0, we will be compatible, so we need
* only check the first digit.
*/
if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
(user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
(user_png_ver[0] == '0' && user_png_ver[2] < '9'))
{
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
char msg[80];
if (user_png_ver)
{
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
png_snprintf(msg, 80,
if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
{
/* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
* we must recompile any applications that use any older library version.
* For versions after libpng 1.0, we will be compatible, so we need
* only check the first digit.
*/
if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
(user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
(user_png_ver[0] == '0' && user_png_ver[2] < '9'))
{
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char msg[80];
if (user_png_ver)
{
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
png_snprintf(msg, 80,
"Application is running with png.c from libpng-%.20s",
png_libpng_ver);
png_warning(png_ptr, msg);
png_libpng_ver);
png_warning(png_ptr, msg);
#endif
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags = 0;
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"Incompatible libpng version in application and library");
}
png_error(png_ptr,
"Incompatible libpng version in application and library");
}
}
/* Initialize zbuf - compression buffer */
@ -148,14 +150,17 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_ptr->zstream.zfree = png_zfree;
png_ptr->zstream.opaque = (voidpf)png_ptr;
switch (inflateInit(&png_ptr->zstream))
{
case Z_OK: /* Do nothing */ break;
case Z_MEM_ERROR:
case Z_STREAM_ERROR: png_error(png_ptr, "zlib memory error"); break;
case Z_VERSION_ERROR: png_error(png_ptr, "zlib version error"); break;
default: png_error(png_ptr, "Unknown zlib error");
}
switch (inflateInit(&png_ptr->zstream))
{
case Z_OK: /* Do nothing */ break;
case Z_MEM_ERROR:
case Z_STREAM_ERROR: png_error(png_ptr, "zlib memory error");
break;
case Z_VERSION_ERROR: png_error(png_ptr, "zlib version error");
break;
default: png_error(png_ptr, "Unknown zlib error");
}
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
@ -163,25 +168,27 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_set_read_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL);
#ifdef PNG_SETJMP_SUPPORTED
/* Applications that neglect to set up their own setjmp() and then encounter
a png_error() will longjmp here. Since the jmpbuf is then meaningless we
abort instead of returning. */
/* Applications that neglect to set up their own setjmp() and then
encounter a png_error() will longjmp here. Since the jmpbuf is
then meaningless we abort instead of returning. */
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
PNG_ABORT();
PNG_ABORT();
png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf));
#else
if (setjmp(png_ptr->jmpbuf))
PNG_ABORT();
#endif
PNG_ABORT();
#endif
#endif /* PNG_SETJMP_SUPPORTED */
return (png_ptr);
}
#if defined(PNG_1_0_X) || defined(PNG_1_2_X)
/* Initialize PNG structure for reading, and allocate any memory needed.
This interface is deprecated in favour of the png_create_read_struct(),
and it will disappear as of libpng-1.3.0. */
* This interface is deprecated in favour of the png_create_read_struct(),
* and it will disappear as of libpng-1.3.0.
*/
#undef png_read_init
void PNGAPI
png_read_init(png_structp png_ptr)
@ -197,7 +204,7 @@ png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
/* We only come here via pre-1.0.12-compiled applications */
if (png_ptr == NULL)
return;
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
if (png_sizeof(png_struct) > png_struct_size ||
png_sizeof(png_info) > png_info_size)
{
@ -217,23 +224,23 @@ png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
}
#endif
if (png_sizeof(png_struct) > png_struct_size)
{
png_ptr->error_fn = NULL;
{
png_ptr->error_fn = NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags = 0;
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"The png struct allocated by the application for reading is too small.");
}
png_error(png_ptr,
"The png struct allocated by the application for reading is too small.");
}
if (png_sizeof(png_info) > png_info_size)
{
png_ptr->error_fn = NULL;
{
png_ptr->error_fn = NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags = 0;
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"The info struct allocated by application for reading is too small.");
}
png_error(png_ptr,
"The info struct allocated by application for reading is too small.");
}
png_read_init_3(&png_ptr, user_png_ver, png_struct_size);
}
#endif /* PNG_1_0_X || PNG_1_2_X */
@ -255,17 +262,17 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
do
{
if (user_png_ver[i] != png_libpng_ver[i])
{
if (user_png_ver[i] != png_libpng_ver[i])
{
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
#else
png_ptr->warning_fn = NULL;
png_warning(png_ptr,
"Application uses deprecated png_read_init() and should be recompiled.");
break;
png_ptr->warning_fn = NULL;
png_warning(png_ptr,
"Application uses deprecated png_read_init() and should be recompiled.");
break;
#endif
}
}
} while (png_libpng_ver[i++]);
png_debug(1, "in png_read_init_3");
@ -292,12 +299,13 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
/* 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;
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
#endif
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zstream.zalloc = png_zalloc;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
png_ptr->zstream.zalloc = png_zalloc;
@ -306,11 +314,10 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
switch (inflateInit(&png_ptr->zstream))
{
case Z_OK: /* Do nothing */ break;
case Z_MEM_ERROR:
case Z_STREAM_ERROR: png_error(png_ptr, "zlib memory"); break;
case Z_VERSION_ERROR: png_error(png_ptr, "zlib version"); break;
default: png_error(png_ptr, "Unknown zlib error");
case Z_OK: /* Do nothing */ break;
case Z_STREAM_ERROR: png_error(png_ptr, "zlib memory error"); break;
case Z_VERSION_ERROR: png_error(png_ptr, "zlib version error"); break;
default: png_error(png_ptr, "Unknown zlib error");
}
png_ptr->zstream.next_out = png_ptr->zbuf;
@ -319,7 +326,7 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
png_set_read_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL);
}
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read the information before the actual image data. This has been
* changed in v0.90 to allow reading a file that already has the magic
* bytes read from the stream. You can tell libpng how many bytes have
@ -331,9 +338,11 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
void PNGAPI
png_read_info(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_read_info");
if (png_ptr == NULL || info_ptr == NULL)
return;
png_debug(1, "in png_read_info");
/* If we haven't checked all of the PNG signature bytes, do so now. */
if (png_ptr->sig_bytes < 8)
{
@ -362,55 +371,55 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
PNG_CONST PNG_IDAT;
PNG_CONST PNG_IEND;
PNG_CONST PNG_PLTE;
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_CONST PNG_bKGD;
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_CONST PNG_cHRM;
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_CONST PNG_gAMA;
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
PNG_CONST PNG_hIST;
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
PNG_CONST PNG_iCCP;
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_CONST PNG_iTXt;
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_CONST PNG_oFFs;
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_CONST PNG_pCAL;
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_CONST PNG_pHYs;
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_CONST PNG_sBIT;
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_CONST PNG_sCAL;
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
PNG_CONST PNG_sPLT;
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_CONST PNG_sRGB;
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_CONST PNG_tEXt;
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
PNG_CONST PNG_tIME;
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_CONST PNG_tRNS;
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_CONST PNG_zTXt;
#endif
#endif /* PNG_USE_LOCAL_ARRAYS */
@ -461,71 +470,71 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
png_ptr->mode |= PNG_HAVE_IDAT;
break;
}
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
else if (!png_memcmp(chunk_name, png_bKGD, 4))
png_handle_bKGD(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
else if (!png_memcmp(chunk_name, png_cHRM, 4))
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
else if (!png_memcmp(chunk_name, png_gAMA, 4))
png_handle_gAMA(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
else if (!png_memcmp(chunk_name, png_hIST, 4))
png_handle_hIST(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
else if (!png_memcmp(chunk_name, png_oFFs, 4))
png_handle_oFFs(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
else if (!png_memcmp(chunk_name, png_pCAL, 4))
png_handle_pCAL(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
else if (!png_memcmp(chunk_name, png_sCAL, 4))
png_handle_sCAL(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
else if (!png_memcmp(chunk_name, png_pHYs, 4))
png_handle_pHYs(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
else if (!png_memcmp(chunk_name, png_sBIT, 4))
png_handle_sBIT(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
else if (!png_memcmp(chunk_name, png_sRGB, 4))
png_handle_sRGB(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
else if (!png_memcmp(chunk_name, png_iCCP, 4))
png_handle_iCCP(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
else if (!png_memcmp(chunk_name, png_sPLT, 4))
png_handle_sPLT(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_tEXt, 4))
png_handle_tEXt(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
else if (!png_memcmp(chunk_name, png_tIME, 4))
png_handle_tIME(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
else if (!png_memcmp(chunk_name, png_tRNS, 4))
png_handle_tRNS(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_zTXt, 4))
png_handle_zTXt(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_iTXt, 4))
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
@ -533,13 +542,14 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
png_handle_unknown(png_ptr, info_ptr, length);
}
}
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
/* Optional call to update the users info_ptr structure */
void PNGAPI
png_read_update_info(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_read_update_info");
if (png_ptr == NULL)
return;
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
@ -550,7 +560,7 @@ png_read_update_info(png_structp png_ptr, png_infop info_ptr)
png_read_transform_info(png_ptr, info_ptr);
}
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Initialize palette, background, etc, after transformations
* are set, but before any reading takes place. This allows
* the user to obtain a gamma-corrected palette, for example.
@ -560,28 +570,30 @@ void PNGAPI
png_start_read_image(png_structp png_ptr)
{
png_debug(1, "in png_start_read_image");
if (png_ptr == NULL)
return;
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
png_read_start_row(png_ptr);
}
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
void PNGAPI
png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_CONST PNG_IDAT;
PNG_CONST int png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55,
0xff};
PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
#endif
int ret;
if (png_ptr == NULL)
return;
png_debug2(1, "in png_read_row (row %lu, pass %d)",
png_ptr->row_number, png_ptr->pass);
if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
png_read_start_row(png_ptr);
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
@ -617,7 +629,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
#endif
}
#if defined(PNG_READ_INTERLACING_SUPPORTED)
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* If interlaced and we do not need a new row, combine row and return */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
@ -751,7 +763,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
png_memcpy_check(png_ptr, png_ptr->prev_row, png_ptr->row_buf,
png_ptr->rowbytes + 1);
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
{
@ -764,7 +776,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
png_do_read_transformations(png_ptr);
#if defined(PNG_READ_INTERLACING_SUPPORTED)
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Blow up interlaced rows to full size */
if (png_ptr->interlaced &&
(png_ptr->transformations & PNG_INTERLACE))
@ -796,9 +808,9 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
if (png_ptr->read_row_fn != NULL)
(*(png_ptr->read_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
}
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read one or more rows of image data. If the image is interlaced,
* and png_set_interlace_handling() has been called, the rows need to
* contain the contents of the rows from the previous pass. If the
@ -832,6 +844,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
png_bytepp dp;
png_debug(1, "in png_read_rows");
if (png_ptr == NULL)
return;
rp = row;
@ -859,9 +872,9 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
dp++;
}
}
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read the entire image. If the image has an alpha channel or a tRNS
* chunk, and you have called png_handle_alpha()[*], you will need to
* initialize the image to the current image that PNG will be overlaying.
@ -882,6 +895,7 @@ png_read_image(png_structp png_ptr, png_bytepp image)
png_bytepp rp;
png_debug(1, "in png_read_image");
if (png_ptr == NULL)
return;
@ -908,9 +922,9 @@ png_read_image(png_structp png_ptr, png_bytepp image)
}
}
}
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
/* Read the end of the PNG file. Will not read past the end of the
* file, will verify the end is accurate, and will read any comments
* or time information at the end of the file, if info is not NULL.
@ -919,6 +933,7 @@ void PNGAPI
png_read_end(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_read_end");
if (png_ptr == NULL)
return;
png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */
@ -930,55 +945,55 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
PNG_CONST PNG_IDAT;
PNG_CONST PNG_IEND;
PNG_CONST PNG_PLTE;
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
PNG_CONST PNG_bKGD;
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
PNG_CONST PNG_cHRM;
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
PNG_CONST PNG_gAMA;
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
PNG_CONST PNG_hIST;
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
PNG_CONST PNG_iCCP;
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
PNG_CONST PNG_iTXt;
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
PNG_CONST PNG_oFFs;
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
PNG_CONST PNG_pCAL;
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
PNG_CONST PNG_pHYs;
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
PNG_CONST PNG_sBIT;
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
PNG_CONST PNG_sCAL;
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
PNG_CONST PNG_sPLT;
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
PNG_CONST PNG_sRGB;
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
PNG_CONST PNG_tEXt;
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
PNG_CONST PNG_tIME;
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
PNG_CONST PNG_tRNS;
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_CONST PNG_zTXt;
#endif
#endif /* PNG_USE_LOCAL_ARRAYS */
@ -1013,71 +1028,71 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
}
else if (!png_memcmp(chunk_name, png_PLTE, 4))
png_handle_PLTE(png_ptr, info_ptr, length);
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
else if (!png_memcmp(chunk_name, png_bKGD, 4))
png_handle_bKGD(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
else if (!png_memcmp(chunk_name, png_cHRM, 4))
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
else if (!png_memcmp(chunk_name, png_gAMA, 4))
png_handle_gAMA(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
else if (!png_memcmp(chunk_name, png_hIST, 4))
png_handle_hIST(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
else if (!png_memcmp(chunk_name, png_oFFs, 4))
png_handle_oFFs(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
else if (!png_memcmp(chunk_name, png_pCAL, 4))
png_handle_pCAL(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
else if (!png_memcmp(chunk_name, png_sCAL, 4))
png_handle_sCAL(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
else if (!png_memcmp(chunk_name, png_pHYs, 4))
png_handle_pHYs(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
else if (!png_memcmp(chunk_name, png_sBIT, 4))
png_handle_sBIT(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
else if (!png_memcmp(chunk_name, png_sRGB, 4))
png_handle_sRGB(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
else if (!png_memcmp(chunk_name, png_iCCP, 4))
png_handle_iCCP(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
else if (!png_memcmp(chunk_name, png_sPLT, 4))
png_handle_sPLT(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_tEXt, 4))
png_handle_tEXt(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
else if (!png_memcmp(chunk_name, png_tIME, 4))
png_handle_tIME(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
else if (!png_memcmp(chunk_name, png_tRNS, 4))
png_handle_tRNS(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_zTXt, 4))
png_handle_zTXt(png_ptr, info_ptr, length);
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
else if (!png_memcmp(chunk_name, png_iTXt, 4))
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
@ -1085,7 +1100,7 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
png_handle_unknown(png_ptr, info_ptr, length);
} while (!(png_ptr->mode & PNG_HAVE_IEND));
}
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
/* Free all memory used by the read */
void PNGAPI
@ -1100,6 +1115,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
#endif
png_debug(1, "in png_destroy_read_struct");
if (png_ptr_ptr != NULL)
png_ptr = *png_ptr_ptr;
if (png_ptr == NULL)
@ -1120,7 +1136,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
if (info_ptr != NULL)
{
#if defined(PNG_TEXT_SUPPORTED)
#ifdef PNG_TEXT_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, -1);
#endif
@ -1135,7 +1151,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
if (end_info_ptr != NULL)
{
#if defined(PNG_READ_TEXT_SUPPORTED)
#ifdef PNG_READ_TEXT_SUPPORTED
png_free_data(png_ptr, end_info_ptr, PNG_FREE_TEXT, -1);
#endif
#ifdef PNG_USER_MEM_SUPPORTED
@ -1174,6 +1190,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
#endif
png_debug(1, "in png_read_destroy");
if (info_ptr != NULL)
png_info_destroy(png_ptr, info_ptr);
@ -1184,14 +1201,14 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
png_free(png_ptr, png_ptr->big_row_buf);
png_free(png_ptr, png_ptr->prev_row);
png_free(png_ptr, png_ptr->chunkdata);
#if defined(PNG_READ_DITHER_SUPPORTED)
#ifdef PNG_READ_DITHER_SUPPORTED
png_free(png_ptr, png_ptr->palette_lookup);
png_free(png_ptr, png_ptr->dither_index);
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED)
#ifdef PNG_READ_GAMMA_SUPPORTED
png_free(png_ptr, png_ptr->gamma_table);
#endif
#if defined(PNG_READ_BACKGROUND_SUPPORTED)
#ifdef PNG_READ_BACKGROUND_SUPPORTED
png_free(png_ptr, png_ptr->gamma_from_1);
png_free(png_ptr, png_ptr->gamma_to_1);
#endif
@ -1216,7 +1233,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
#endif
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
#ifdef PNG_FREE_ME_SUPPORTED
if (png_ptr->free_me & PNG_FREE_HIST)
png_free(png_ptr, png_ptr->hist);
@ -1227,7 +1244,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
#endif
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED)
#ifdef PNG_READ_GAMMA_SUPPORTED
if (png_ptr->gamma_16_table != NULL)
{
int i;
@ -1238,7 +1255,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
}
png_free(png_ptr, png_ptr->gamma_16_table);
}
#if defined(PNG_READ_BACKGROUND_SUPPORTED)
#ifdef PNG_READ_BACKGROUND_SUPPORTED
if (png_ptr->gamma_16_from_1 != NULL)
{
int i;
@ -1261,7 +1278,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
}
#endif
#endif
#if defined(PNG_TIME_RFC1123_SUPPORTED)
#ifdef PNG_TIME_RFC1123_SUPPORTED
png_free(png_ptr, png_ptr->time_buffer);
#endif
@ -1314,8 +1331,8 @@ png_set_read_status_fn(png_structp png_ptr, png_read_status_ptr read_row_fn)
}
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
#if defined(PNG_INFO_IMAGE_SUPPORTED)
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
#ifdef PNG_INFO_IMAGE_SUPPORTED
void PNGAPI
png_read_png(png_structp png_ptr, png_infop info_ptr,
int transforms,
@ -1325,7 +1342,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
if (png_ptr == NULL)
return;
#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED)
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
/* Invert the alpha channel from opacity to transparency
*/
if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
@ -1341,14 +1358,14 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
/* -------------- image transformations start here ------------------- */
#if defined(PNG_READ_16_TO_8_SUPPORTED)
#ifdef PNG_READ_16_TO_8_SUPPORTED
/* Tell libpng to strip 16 bit/color files down to 8 bits per color.
*/
if (transforms & PNG_TRANSFORM_STRIP_16)
png_set_strip_16(png_ptr);
#endif
#if defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
/* Strip alpha bytes from the input data without combining with
* the background (not recommended).
*/
@ -1364,7 +1381,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
png_set_packing(png_ptr);
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED)
#ifdef PNG_READ_PACKSWAP_SUPPORTED
/* Change the order of packed pixels to least significant bit first
* (not useful if you are using png_set_packing).
*/
@ -1372,7 +1389,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
png_set_packswap(png_ptr);
#endif
#if defined(PNG_READ_EXPAND_SUPPORTED)
#ifdef PNG_READ_EXPAND_SUPPORTED
/* Expand paletted colors into true RGB triplets
* Expand grayscale images to full 8 bits from 1, 2, or 4 bits/pixel
* Expand paletted or RGB images with transparency to full alpha
@ -1388,14 +1405,14 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
/* We don't handle background color or gamma transformation or dithering.
*/
#if defined(PNG_READ_INVERT_SUPPORTED)
#ifdef PNG_READ_INVERT_SUPPORTED
/* Invert monochrome files to have 0 as white and 1 as black
*/
if (transforms & PNG_TRANSFORM_INVERT_MONO)
png_set_invert_mono(png_ptr);
#endif
#if defined(PNG_READ_SHIFT_SUPPORTED)
#ifdef PNG_READ_SHIFT_SUPPORTED
/* If you want to shift the pixel values from the range [0,255] or
* [0,65535] to the original [0,7] or [0,31], or whatever range the
* colors were originally in:
@ -1410,27 +1427,43 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_READ_BGR_SUPPORTED)
#ifdef PNG_READ_BGR_SUPPORTED
/* Flip the RGB pixels to BGR (or RGBA to BGRA)
*/
if (transforms & PNG_TRANSFORM_BGR)
png_set_bgr(png_ptr);
#endif
#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED)
#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
/* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR)
*/
if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
png_set_swap_alpha(png_ptr);
#endif
#if defined(PNG_READ_SWAP_SUPPORTED)
#ifdef PNG_READ_SWAP_SUPPORTED
/* Swap bytes of 16 bit files to least significant byte first
*/
if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
png_set_swap(png_ptr);
#endif
/* Added at libpng-1.2.41 */
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
/* Invert the alpha channel from opacity to transparency
*/
if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
png_set_invert_alpha(png_ptr);
#endif
/* Added at libpng-1.2.41 */
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
/* Expand grayscale image to RGB
*/
if (transforms & PNG_TRANSFORM_GRAY_TO_RGB)
png_set_gray_to_rgb(png_ptr);
#endif
/* We don't handle adding filler bytes */
/* Optional call to gamma correct and add the background to the palette
@ -1450,9 +1483,11 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
info_ptr->height * png_sizeof(png_bytep));
png_memset(info_ptr->row_pointers, 0, info_ptr->height
* png_sizeof(png_bytep));
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_ROWS;
#endif
for (row = 0; row < (int)info_ptr->height; row++)
info_ptr->row_pointers[row] = (png_bytep)png_malloc(png_ptr,
png_get_rowbytes(png_ptr, info_ptr));
@ -1469,5 +1504,5 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
}
#endif /* PNG_INFO_IMAGE_SUPPORTED */
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
#endif /* PNG_READ_SUPPORTED */

17
pngrio.c
View File

@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
* Last changed in libpng 1.2.37 [June 4, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -20,7 +20,7 @@
#define PNG_INTERNAL
#include "png.h"
#if defined(PNG_READ_SUPPORTED)
#ifdef PNG_READ_SUPPORTED
/* Read the data from whatever input you are using. The default routine
* reads from a file pointer. Note that this routine sometimes gets called
@ -32,13 +32,14 @@ void /* PRIVATE */
png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_debug1(4, "reading %d bytes", (int)length);
if (png_ptr->read_data_fn != NULL)
(*(png_ptr->read_data_fn))(png_ptr, data, length);
else
png_error(png_ptr, "Call to NULL read function");
}
#if !defined(PNG_NO_STDIO)
#ifdef PNG_STDIO_SUPPORTED
/* This is the function that does the actual reading of data. If you are
* not reading from a standard C stream, you should create a replacement
* read_data function and use it at run time with png_set_read_fn(), rather
@ -55,7 +56,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
/* fread() returns 0 on error, so it is OK to store this in a png_size_t
* instead of an int, which is what fread() actually returns.
*/
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
check = 0;
#else
@ -89,7 +90,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
if ((png_bytep)n_data == data)
{
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
check = 0;
#else
@ -105,7 +106,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
do
{
read = MIN(NEAR_BUF_SIZE, remaining);
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
if ( !ReadFile((HANDLE)(io_ptr), buf, read, &err, NULL) )
err = 0;
#else
@ -151,7 +152,7 @@ png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
return;
png_ptr->io_ptr = io_ptr;
#if !defined(PNG_NO_STDIO)
#ifdef PNG_STDIO_SUPPORTED
if (read_data_fn != NULL)
png_ptr->read_data_fn = read_data_fn;
else
@ -170,7 +171,7 @@ png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
"same structure. Resetting write_data_fn to NULL.");
}
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
#ifdef PNG_WRITE_FLUSH_SUPPORTED
png_ptr->output_flush_fn = NULL;
#endif
}

332
pngrtran.c
View File

File diff suppressed because it is too large Load Diff

148
pngrutil.c
View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.2.38 [July 16, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -16,14 +16,14 @@
#define PNG_INTERNAL
#include "png.h"
#if defined(PNG_READ_SUPPORTED)
#ifdef PNG_READ_SUPPORTED
#if defined(_WIN32_WCE) && (_WIN32_WCE<0x500)
# define WIN32_WCE_OLD
#endif
#ifdef PNG_FLOATING_POINT_SUPPORTED
# if defined(WIN32_WCE_OLD)
# ifdef WIN32_WCE_OLD
/* The strtod() function is not supported on WindowsCE */
__inline double png_strtod(png_structp png_ptr, PNG_CONST char *nptr, char **endptr)
{
@ -228,7 +228,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_size_t chunklength,
png_size_t prefix_size, png_size_t *newlength)
{
static PNG_CONST char msg[] = "Error decoding compressed text";
static PNG_CONST char msg[] = "Error decoding compressed chunk";
png_charp text;
png_size_t text_size;
@ -302,9 +302,9 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_charp tmp;
tmp = text;
text = (png_charp)png_malloc_warn(png_ptr,
(png_uint_32)(text_size +
png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
text = (png_charp)png_malloc_warn(png_ptr,
(png_uint_32)(text_size +
png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
if (text == NULL)
{
png_free(png_ptr, tmp);
@ -331,7 +331,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
}
if (ret != Z_STREAM_END)
{
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char umsg[52];
if (ret == Z_BUF_ERROR)
@ -378,7 +378,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
}
else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
{
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char umsg[50];
png_snprintf(umsg, 50, "Unknown zTXt compression type %d", comp_type);
@ -430,7 +430,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->bit_depth = (png_byte)bit_depth;
png_ptr->interlaced = (png_byte)interlace_type;
png_ptr->color_type = (png_byte)color_type;
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
png_ptr->filter_type = (png_byte)filter_type;
#endif
png_ptr->compression_type = (png_byte)compression_type;
@ -473,7 +473,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_color palette[PNG_MAX_PALETTE_LENGTH];
int num, i;
#ifndef PNG_NO_POINTER_INDEXING
#ifdef PNG_POINTER_INDEXING_SUPPORTED
png_colorp pal_ptr;
#endif
@ -501,7 +501,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_crc_finish(png_ptr, length);
return;
}
#if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
#ifndef PNG_READ_OPT_PLTE_SUPPORTED
if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
{
png_crc_finish(png_ptr, length);
@ -526,7 +526,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
num = (int)length / 3;
#ifndef PNG_NO_POINTER_INDEXING
#ifdef PNG_POINTER_INDEXING_SUPPORTED
for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
{
png_byte buf[3];
@ -554,13 +554,13 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
* have an RGB image, the PLTE can be considered ancillary, so
* we will act as though it is.
*/
#if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
#ifndef PNG_READ_OPT_PLTE_SUPPORTED
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
#endif
{
png_crc_finish(png_ptr, 0);
}
#if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
#ifndef PNG_READ_OPT_PLTE_SUPPORTED
else if (png_crc_error(png_ptr)) /* Only if we have a CRC error */
{
/* If we don't want to use the data from an ancillary chunk,
@ -589,7 +589,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_set_PLTE(png_ptr, info_ptr, palette, num);
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
@ -631,7 +631,7 @@ png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
}
#if defined(PNG_READ_gAMA_SUPPORTED)
#ifdef PNG_READ_gAMA_SUPPORTED
void /* PRIVATE */
png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -656,7 +656,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_warning(png_ptr, "Out of place gAMA chunk");
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
&& !(info_ptr->valid & PNG_INFO_sRGB)
#endif
)
@ -686,13 +686,13 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
return;
}
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB))
if (PNG_OUT_OF_RANGE(igamma, 45500L, 500))
{
png_warning(png_ptr,
"Ignoring incorrect gAMA value when sRGB is also present");
#ifndef PNG_NO_CONSOLE_IO
#ifdef PNG_CONSOLE_IO_SUPPORTED
fprintf(stderr, "gamma = (%d/100000)", (int)igamma);
#endif
return;
@ -712,7 +712,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
#ifdef PNG_READ_sBIT_SUPPORTED
void /* PRIVATE */
png_handle_sBIT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -778,7 +778,7 @@ png_handle_sBIT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
#ifdef PNG_READ_cHRM_SUPPORTED
void /* PRIVATE */
png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -806,7 +806,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_warning(png_ptr, "Missing PLTE before cHRM");
if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
&& !(info_ptr->valid & PNG_INFO_sRGB)
#endif
)
@ -858,7 +858,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
blue_y = (float)int_y_blue / (float)100000.0;
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
if ((info_ptr != NULL) && (info_ptr->valid & PNG_INFO_sRGB))
{
if (PNG_OUT_OF_RANGE(int_x_white, 31270, 1000) ||
@ -872,7 +872,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_warning(png_ptr,
"Ignoring incorrect cHRM value when sRGB is also present");
#ifndef PNG_NO_CONSOLE_IO
#ifdef PNG_CONSOLE_IO_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
fprintf(stderr, "wx=%f, wy=%f, rx=%f, ry=%f\n",
white_x, white_y, red_x, red_y);
@ -884,7 +884,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
fprintf(stderr, "gx=%ld, gy=%ld, bx=%ld, by=%ld\n",
int_x_green, int_y_green, int_x_blue, int_y_blue);
#endif
#endif /* PNG_NO_CONSOLE_IO */
#endif /* PNG_CONSOLE_IO_SUPPORTED */
}
return;
}
@ -902,7 +902,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
#ifdef PNG_READ_sRGB_SUPPORTED
void /* PRIVATE */
png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -964,7 +964,7 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_warning(png_ptr,
"Ignoring incorrect gAMA value when sRGB is also present");
#ifndef PNG_NO_CONSOLE_IO
#ifdef PNG_CONSOLE_IO_SUPPORTED
# ifdef PNG_FIXED_POINT_SUPPORTED
fprintf(stderr, "incorrect gamma=(%d/100000)\n",
(int)png_ptr->int_gamma);
@ -1000,7 +1000,7 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif /* PNG_READ_sRGB_SUPPORTED */
#if defined(PNG_READ_iCCP_SUPPORTED)
#ifdef PNG_READ_iCCP_SUPPORTED
void /* PRIVATE */
png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* Note: this does not properly handle chunks that are > 64K under DOS */
@ -1120,14 +1120,14 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif /* PNG_READ_iCCP_SUPPORTED */
#if defined(PNG_READ_sPLT_SUPPORTED)
#ifdef PNG_READ_sPLT_SUPPORTED
void /* PRIVATE */
png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* Note: this does not properly handle chunks that are > 64K under DOS */
{
png_bytep entry_start;
png_sPLT_t new_palette;
#ifdef PNG_NO_POINTER_INDEXING
#ifdef PNG_POINTER_INDEXING_SUPPORTED
png_sPLT_entryp pp;
#endif
int data_length, entry_size, i;
@ -1136,7 +1136,6 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_sPLT");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before sPLT");
else if (png_ptr->mode & PNG_HAVE_IDAT)
@ -1210,10 +1209,10 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
return;
}
#ifndef PNG_NO_POINTER_INDEXING
#ifdef PNG_POINTER_INDEXING_SUPPORTED
for (i = 0; i < new_palette.nentries; i++)
{
png_sPLT_entryp pp = new_palette.entries + i;
pp = new_palette.entries + i;
if (new_palette.depth == 8)
{
@ -1265,7 +1264,7 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif /* PNG_READ_sPLT_SUPPORTED */
#if defined(PNG_READ_tRNS_SUPPORTED)
#ifdef PNG_READ_tRNS_SUPPORTED
void /* PRIVATE */
png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -1360,7 +1359,7 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_bKGD_SUPPORTED)
#ifdef PNG_READ_bKGD_SUPPORTED
void /* PRIVATE */
png_handle_bKGD(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -1449,7 +1448,7 @@ png_handle_bKGD(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
#ifdef PNG_READ_hIST_SUPPORTED
void /* PRIVATE */
png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -1503,7 +1502,7 @@ png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
#ifdef PNG_READ_pHYs_SUPPORTED
void /* PRIVATE */
png_handle_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -1546,7 +1545,7 @@ png_handle_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
#ifdef PNG_READ_oFFs_SUPPORTED
void /* PRIVATE */
png_handle_oFFs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -1589,7 +1588,7 @@ png_handle_oFFs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
#ifdef PNG_READ_pCAL_SUPPORTED
/* Read the pCAL chunk (described in the PNG Extensions document) */
void /* PRIVATE */
png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@ -1723,7 +1722,7 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
#ifdef PNG_READ_sCAL_SUPPORTED
/* Read the sCAL chunk */
void /* PRIVATE */
png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@ -1866,7 +1865,7 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
#ifdef PNG_READ_tIME_SUPPORTED
void /* PRIVATE */
png_handle_tIME(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@ -1909,7 +1908,7 @@ png_handle_tIME(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
#ifdef PNG_READ_tEXt_SUPPORTED
/* Note: this does not properly handle chunks that are > 64K under DOS */
void /* PRIVATE */
png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@ -1923,7 +1922,6 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_tEXt");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before tEXt");
@ -1996,7 +1994,7 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
#ifdef PNG_READ_zTXt_SUPPORTED
/* Note: this does not correctly handle chunks that are > 64K under DOS */
void /* PRIVATE */
png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@ -2009,7 +2007,6 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_zTXt");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before zTXt");
@ -2100,7 +2097,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
#ifdef PNG_READ_iTXt_SUPPORTED
/* Note: this does not correctly handle chunks that are > 64K under DOS */
void /* PRIVATE */
png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@ -2114,7 +2111,6 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_iTXt");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before iTXt");
@ -2242,7 +2238,6 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_unknown");
if (png_ptr->mode & PNG_HAVE_IDAT)
{
#ifdef PNG_USE_LOCAL_ARRAYS
@ -2254,10 +2249,10 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (!(png_ptr->chunk_name[0] & 0x20))
{
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
PNG_HANDLE_CHUNK_ALWAYS
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
&& png_ptr->read_user_chunk_fn == NULL
#endif
)
@ -2265,9 +2260,9 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_chunk_error(png_ptr, "unknown critical chunk");
}
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
if ((png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
|| (png_ptr->read_user_chunk_fn != NULL)
#endif
)
@ -2292,7 +2287,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
}
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
if (png_ptr->read_user_chunk_fn != NULL)
{
/* Callback to user unknown chunk handler */
@ -2304,7 +2299,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (ret == 0)
{
if (!(png_ptr->chunk_name[0] & 0x20))
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
PNG_HANDLE_CHUNK_ALWAYS)
#endif
@ -2325,7 +2320,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_crc_finish(png_ptr, skip);
#if !defined(PNG_READ_USER_CHUNKS_SUPPORTED)
#ifndef PNG_READ_USER_CHUNKS_SUPPORTED
info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
#endif
}
@ -2383,7 +2378,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_uint_32 i;
png_uint_32 row_width = png_ptr->width;
#if defined(PNG_READ_PACKSWAP_SUPPORTED)
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if (png_ptr->transformations & PNG_PACKSWAP)
{
s_start = 0;
@ -2438,7 +2433,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_uint_32 row_width = png_ptr->width;
int value;
#if defined(PNG_READ_PACKSWAP_SUPPORTED)
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if (png_ptr->transformations & PNG_PACKSWAP)
{
s_start = 0;
@ -2490,7 +2485,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
png_uint_32 row_width = png_ptr->width;
int value;
#if defined(PNG_READ_PACKSWAP_SUPPORTED)
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if (png_ptr->transformations & PNG_PACKSWAP)
{
s_start = 0;
@ -2573,11 +2568,9 @@ png_do_read_interlace(png_structp png_ptr)
png_bytep row = png_ptr->row_buf + 1;
int pass = png_ptr->pass;
png_uint_32 transformations = png_ptr->transformations;
#ifdef PNG_USE_LOCAL_ARRAYS
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Offset to next interlace block */
PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
#endif
png_debug(1, "in png_do_read_interlace");
if (row != NULL && row_info != NULL)
@ -2599,7 +2592,7 @@ png_do_read_interlace(png_structp png_ptr)
png_uint_32 i;
int j;
#if defined(PNG_READ_PACKSWAP_SUPPORTED)
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if (transformations & PNG_PACKSWAP)
{
sshift = (int)((row_info->width + 7) & 0x07);
@ -2652,7 +2645,7 @@ png_do_read_interlace(png_structp png_ptr)
int jstop = png_pass_inc[pass];
png_uint_32 i;
#if defined(PNG_READ_PACKSWAP_SUPPORTED)
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if (transformations & PNG_PACKSWAP)
{
sshift = (int)(((row_info->width + 3) & 0x03) << 1);
@ -2708,7 +2701,7 @@ png_do_read_interlace(png_structp png_ptr)
png_uint_32 i;
int jstop = png_pass_inc[pass];
#if defined(PNG_READ_PACKSWAP_SUPPORTED)
#ifdef PNG_READ_PACKSWAP_SUPPORTED
if (transformations & PNG_PACKSWAP)
{
sshift = (int)(((row_info->width + 1) & 0x01) << 2);
@ -2782,7 +2775,7 @@ png_do_read_interlace(png_structp png_ptr)
row_info->width = final_width;
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width);
}
#if !defined(PNG_READ_PACKSWAP_SUPPORTED)
#ifndef PNG_READ_PACKSWAP_SUPPORTED
transformations = transformations; /* Silence compiler warning */
#endif
}
@ -2911,11 +2904,10 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep row,
}
}
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
void /* PRIVATE */
png_read_finish_row(png_structp png_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
@ -2931,7 +2923,6 @@ png_read_finish_row(png_structp png_ptr)
/* Offset to next interlace block in the y direction */
PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif /* PNG_READ_INTERLACING_SUPPORTED */
#endif
png_debug(1, "in png_read_finish_row");
png_ptr->row_number++;
@ -3043,12 +3034,11 @@ png_read_finish_row(png_structp png_ptr)
png_ptr->mode |= PNG_AFTER_IDAT;
}
#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
void /* PRIVATE */
png_read_start_row(png_structp png_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
@ -3063,7 +3053,6 @@ png_read_start_row(png_structp png_ptr)
/* Offset to next interlace block in the y direction */
PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
#endif
int max_pixel_depth;
@ -3098,12 +3087,12 @@ png_read_start_row(png_structp png_ptr)
}
max_pixel_depth = png_ptr->pixel_depth;
#if defined(PNG_READ_PACK_SUPPORTED)
#ifdef PNG_READ_PACK_SUPPORTED
if ((png_ptr->transformations & PNG_PACK) && png_ptr->bit_depth < 8)
max_pixel_depth = 8;
#endif
#if defined(PNG_READ_EXPAND_SUPPORTED)
#ifdef PNG_READ_EXPAND_SUPPORTED
if (png_ptr->transformations & PNG_EXPAND)
{
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
@ -3131,7 +3120,7 @@ png_read_start_row(png_structp png_ptr)
}
#endif
#if defined(PNG_READ_FILLER_SUPPORTED)
#ifdef PNG_READ_FILLER_SUPPORTED
if (png_ptr->transformations & (PNG_FILLER))
{
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
@ -3153,14 +3142,14 @@ png_read_start_row(png_structp png_ptr)
}
#endif
#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
if (png_ptr->transformations & PNG_GRAY_TO_RGB)
{
if (
#if defined(PNG_READ_EXPAND_SUPPORTED)
#ifdef PNG_READ_EXPAND_SUPPORTED
(png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND)) ||
#endif
#if defined(PNG_READ_FILLER_SUPPORTED)
#ifdef PNG_READ_FILLER_SUPPORTED
(png_ptr->transformations & (PNG_FILLER)) ||
#endif
png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
@ -3215,9 +3204,10 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if (row_bytes + 64 > png_ptr->old_big_row_buf_size)
{
png_free(png_ptr, png_ptr->big_row_buf);
png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 64);
if (png_ptr->interlaced)
png_memset(png_ptr->big_row_buf, 0, row_bytes + 64);
png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr, row_bytes + 64);
else
png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 64);
png_ptr->row_buf = png_ptr->big_row_buf + 32;
png_ptr->old_big_row_buf_size = row_bytes + 64;
}

167
pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.2.40 [September 10, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -20,7 +20,7 @@
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#if defined(PNG_bKGD_SUPPORTED)
#ifdef PNG_bKGD_SUPPORTED
void PNGAPI
png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
{
@ -34,7 +34,7 @@ png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
}
#endif
#if defined(PNG_cHRM_SUPPORTED)
#ifdef PNG_cHRM_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
void PNGAPI
png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
@ -80,7 +80,7 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
if (png_ptr == NULL || info_ptr == NULL)
return;
#if !defined(PNG_NO_CHECK_cHRM)
#ifdef PNG_CHECK_cHRM_SUPPORTED
if (png_check_cHRM_fixed(png_ptr,
white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y))
#endif
@ -109,7 +109,7 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
#endif /* PNG_FIXED_POINT_SUPPORTED */
#endif /* PNG_cHRM_SUPPORTED */
#if defined(PNG_gAMA_SUPPORTED)
#ifdef PNG_gAMA_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
void PNGAPI
png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
@ -176,7 +176,7 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
}
#endif
#if defined(PNG_hIST_SUPPORTED)
#ifdef PNG_hIST_SUPPORTED
void PNGAPI
png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
{
@ -233,82 +233,18 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
if (png_ptr == NULL || info_ptr == NULL)
return;
/* Check for width and height valid values */
if (width == 0 || height == 0)
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)
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 */
if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
bit_depth != 8 && bit_depth != 16)
png_error(png_ptr, "Invalid bit depth in IHDR");
if (color_type < 0 || color_type == 1 ||
color_type == 5 || color_type > 6)
png_error(png_ptr, "Invalid color type in IHDR");
if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
((color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
png_error(png_ptr, "Invalid color type/bit depth combination in IHDR");
if (interlace_type >= PNG_INTERLACE_LAST)
png_error(png_ptr, "Unknown interlace method in IHDR");
if (compression_type != PNG_COMPRESSION_TYPE_BASE)
png_error(png_ptr, "Unknown compression method in IHDR");
#if defined(PNG_MNG_FEATURES_SUPPORTED)
/* Accept filter_method 64 (intrapixel differencing) only if
* 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
* 2. Libpng did not read a PNG signature (this filter_method is only
* used in PNG datastreams that are embedded in MNG datastreams) and
* 3. The application called png_permit_mng_features with a mask that
* included PNG_FLAG_MNG_FILTER_64 and
* 4. The filter_method is 64 and
* 5. The color_type is RGB or RGBA
*/
if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted)
png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
if (filter_type != PNG_FILTER_TYPE_BASE)
{
if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
(color_type == PNG_COLOR_TYPE_RGB ||
color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
png_error(png_ptr, "Unknown filter method in IHDR");
if (png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)
png_warning(png_ptr, "Invalid filter method in IHDR");
}
#else
if (filter_type != PNG_FILTER_TYPE_BASE)
png_error(png_ptr, "Unknown filter method in IHDR");
#endif
info_ptr->width = width;
info_ptr->height = height;
info_ptr->bit_depth = (png_byte)bit_depth;
info_ptr->color_type =(png_byte) color_type;
info_ptr->color_type = (png_byte)color_type;
info_ptr->compression_type = (png_byte)compression_type;
info_ptr->filter_type = (png_byte)filter_type;
info_ptr->interlace_type = (png_byte)interlace_type;
png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
info_ptr->compression_type, info_ptr->filter_type);
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
info_ptr->channels = 1;
else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
@ -331,7 +267,7 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
}
#if defined(PNG_oFFs_SUPPORTED)
#ifdef PNG_oFFs_SUPPORTED
void PNGAPI
png_set_oFFs(png_structp png_ptr, png_infop info_ptr,
png_int_32 offset_x, png_int_32 offset_y, int unit_type)
@ -348,7 +284,7 @@ png_set_oFFs(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_pCAL_SUPPORTED)
#ifdef PNG_pCAL_SUPPORTED
void PNGAPI
png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams,
@ -487,7 +423,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
#endif
#endif
#if defined(PNG_pHYs_SUPPORTED)
#ifdef PNG_pHYs_SUPPORTED
void PNGAPI
png_set_pHYs(png_structp png_ptr, png_infop info_ptr,
png_uint_32 res_x, png_uint_32 res_y, int unit_type)
@ -538,10 +474,8 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
* of num_palette entries, in case of an invalid PNG file that has
* too-large sample values.
*/
png_ptr->palette = (png_colorp)png_malloc(png_ptr,
png_ptr->palette = (png_colorp)png_calloc(png_ptr,
PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color));
png_memset(png_ptr->palette, 0, PNG_MAX_PALETTE_LENGTH *
png_sizeof(png_color));
png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color));
info_ptr->palette = png_ptr->palette;
info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
@ -555,7 +489,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
info_ptr->valid |= PNG_INFO_PLTE;
}
#if defined(PNG_sBIT_SUPPORTED)
#ifdef PNG_sBIT_SUPPORTED
void PNGAPI
png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
png_color_8p sig_bit)
@ -570,7 +504,7 @@ png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_sRGB_SUPPORTED)
#ifdef PNG_sRGB_SUPPORTED
void PNGAPI
png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent)
{
@ -587,7 +521,7 @@ void PNGAPI
png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
int intent)
{
#if defined(PNG_gAMA_SUPPORTED)
#ifdef PNG_gAMA_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
float file_gamma;
#endif
@ -595,7 +529,7 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
png_fixed_point int_file_gamma;
#endif
#endif
#if defined(PNG_cHRM_SUPPORTED)
#ifdef PNG_cHRM_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
#endif
@ -609,7 +543,7 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
png_set_sRGB(png_ptr, info_ptr, intent);
#if defined(PNG_gAMA_SUPPORTED)
#ifdef PNG_gAMA_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
file_gamma = (float).45455;
png_set_gAMA(png_ptr, info_ptr, file_gamma);
@ -620,7 +554,7 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
#endif
#endif
#if defined(PNG_cHRM_SUPPORTED)
#ifdef PNG_cHRM_SUPPORTED
int_white_x = 31270L;
int_white_y = 32900L;
int_red_x = 64000L;
@ -641,28 +575,21 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
blue_y = (float).06;
#endif
#if !defined(PNG_NO_CHECK_cHRM)
if (png_check_cHRM_fixed(png_ptr,
int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
int_green_y, int_blue_x, int_blue_y))
#endif
{
#ifdef PNG_FIXED_POINT_SUPPORTED
png_set_cHRM_fixed(png_ptr, info_ptr,
int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
int_green_y, int_blue_x, int_blue_y);
png_set_cHRM_fixed(png_ptr, info_ptr,
int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
int_green_y, int_blue_x, int_blue_y);
#endif
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_set_cHRM(png_ptr, info_ptr,
white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
png_set_cHRM(png_ptr, info_ptr,
white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
#endif
}
#endif /* cHRM */
}
#endif /* sRGB */
#if defined(PNG_iCCP_SUPPORTED)
#ifdef PNG_iCCP_SUPPORTED
void PNGAPI
png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
png_charp name, int compression_type,
@ -710,7 +637,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_TEXT_SUPPORTED)
#ifdef PNG_TEXT_SUPPORTED
void PNGAPI
png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
int num_text)
@ -789,10 +716,12 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
lang_len = 0;
lang_key_len = 0;
}
else
#ifdef PNG_iTXt_SUPPORTED
{
/* Set iTXt data */
if (text_ptr[i].lang != NULL)
lang_len = png_strlen(text_ptr[i].lang);
else
@ -802,7 +731,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
else
lang_key_len = 0;
}
#else
#else /* PNG_iTXt_SUPPORTED */
{
png_warning(png_ptr, "iTXt chunk not supported.");
continue;
@ -819,6 +748,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
#endif
textp->compression = PNG_TEXT_COMPRESSION_NONE;
}
else
{
text_length = png_strlen(text_ptr[i].text);
@ -870,6 +800,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
}
else
#endif
{
textp->text_length = text_length;
#ifdef PNG_iTXt_SUPPORTED
@ -883,7 +814,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
}
#endif
#if defined(PNG_tIME_SUPPORTED)
#ifdef PNG_tIME_SUPPORTED
void PNGAPI
png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
{
@ -898,7 +829,7 @@ png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
}
#endif
#if defined(PNG_tRNS_SUPPORTED)
#ifdef PNG_tRNS_SUPPORTED
void PNGAPI
png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
png_bytep trans, int num_trans, png_color_16p trans_values)
@ -910,8 +841,7 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
if (trans != NULL)
{
/*
* It may not actually be necessary to set png_ptr->trans here;
/* It may not actually be necessary to set png_ptr->trans here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*/
@ -957,7 +887,7 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
}
#endif
#if defined(PNG_sPLT_SUPPORTED)
#ifdef PNG_sPLT_SUPPORTED
void PNGAPI
png_set_sPLT(png_structp png_ptr,
png_infop info_ptr, png_sPLT_tp entries, int nentries)
@ -1121,7 +1051,7 @@ png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted)
#endif
#endif
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
png_uint_32 PNGAPI
png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
{
@ -1135,7 +1065,7 @@ png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
}
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
void PNGAPI
png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
chunk_list, int num_chunks)
@ -1182,7 +1112,7 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
}
#endif
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
void PNGAPI
png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr,
png_user_chunk_ptr read_user_chunk_fn)
@ -1197,7 +1127,7 @@ png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr,
}
#endif
#if defined(PNG_INFO_IMAGE_SUPPORTED)
#ifdef PNG_INFO_IMAGE_SUPPORTED
void PNGAPI
png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
{
@ -1281,5 +1211,18 @@ png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
void PNGAPI
png_set_benign_errors(png_structp png_ptr, int allowed)
{
png_debug(1, "in png_set_benign_errors");
if (allowed)
png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN;
else
png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN;
}
#endif /* PNG_BENIGN_ERRORS_SUPPORTED */
#endif /* ?PNG_1_0_X */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

132
pngtest.c
View File

@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng
*
* Last changed in libpng 1.2.37 [June 4, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -33,7 +33,7 @@
#include "png.h"
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
# if _WIN32_WCE < 211
__error__ (f|w)printf functions are not supported on old WindowsCE.;
# endif
@ -54,8 +54,8 @@
# define FCLOSE(file) fclose(file)
#endif
#if defined(PNG_NO_STDIO)
# if defined(_WIN32_WCE)
#ifndef PNG_STDIO_SUPPORTED
# ifdef _WIN32_WCE
typedef HANDLE png_FILE_p;
# else
typedef FILE * png_FILE_p;
@ -75,7 +75,7 @@
#define PNGTEST_TIMING
*/
#ifdef PNG_NO_FLOATING_POINT_SUPPORTED
#ifndef PNG_FLOATING_POINT_SUPPORTED
#undef PNGTEST_TIMING
#endif
@ -84,7 +84,7 @@ static float t_start, t_stop, t_decode, t_encode, t_misc;
#include <time.h>
#endif
#if defined(PNG_TIME_RFC1123_SUPPORTED)
#ifdef PNG_TIME_RFC1123_SUPPORTED
#define PNG_tIME_STRING_LENGTH 29
static int tIME_chunk_present = 0;
static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
@ -162,7 +162,7 @@ write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
}
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
/* Example of using user transform callback (we don't transform anything,
* but merely examine the row filters. We set this to 256 rather than
* 5 in case illegal filter values are present.)
@ -184,7 +184,7 @@ count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
}
#endif
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
/* Example of using user transform callback (we don't transform anything,
* but merely count the zero samples)
*/
@ -297,7 +297,7 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
static int wrote_question = 0;
#if defined(PNG_NO_STDIO)
#ifndef PNG_STDIO_SUPPORTED
/* START of code to validate stdio-free compilation */
/* These copies of the default read/write functions come from pngrio.c and
* pngwio.c. They allow "don't include stdio" testing of the library.
@ -371,7 +371,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
}
#endif /* USE_FAR_KEYWORD */
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
#ifdef PNG_WRITE_FLUSH_SUPPORTED
static void
pngtest_flush(png_structp png_ptr)
{
@ -474,7 +474,7 @@ pngtest_error(png_structp png_ptr, png_const_charp message)
* actually OK in this case.
*/
}
#endif /* PNG_NO_STDIO */
#endif /* !PNG_STDIO_SUPPORTED */
/* END of code to validate stdio-free compilation */
/* START of code to validate memory allocation and deallocation */
@ -607,7 +607,7 @@ png_debug_free(png_structp png_ptr, png_voidp ptr)
/* Demonstration of user chunk support of the sTER and vpAg chunks */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
/* (sTER is a public chunk not yet known by libpng. vpAg is a private
chunk used in ImageMagick to store "virtual page" size). */
@ -701,14 +701,14 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#endif
#endif
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
TCHAR path[MAX_PATH];
#endif
char inbuf[256], outbuf[256];
row_buf = NULL;
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
#else
@ -719,7 +719,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
return (1);
}
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
if ((fpout = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, NULL)) == INVALID_HANDLE_VALUE)
#else
@ -742,12 +742,12 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_create_read_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
png_error_ptr_NULL, png_error_ptr_NULL);
#endif
#if defined(PNG_NO_STDIO)
#ifndef PNG_STDIO_SUPPORTED
png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
pngtest_warning);
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
user_chunk_data[0] = 0;
user_chunk_data[1] = 0;
user_chunk_data[2] = 0;
@ -767,7 +767,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_create_write_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
png_error_ptr_NULL, png_error_ptr_NULL);
#endif
#if defined(PNG_NO_STDIO)
#ifndef PNG_STDIO_SUPPORTED
png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
pngtest_warning);
#endif
@ -829,7 +829,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#endif
png_debug(0, "Initializing input and output streams");
#if !defined(PNG_NO_STDIO)
#ifdef PNG_STDIO_SUPPORTED
png_init_io(read_ptr, fpin);
# ifdef PNG_WRITE_SUPPORTED
png_init_io(write_ptr, fpout);
@ -838,7 +838,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
# ifdef PNG_WRITE_SUPPORTED
png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
# if defined(PNG_WRITE_FLUSH_SUPPORTED)
# ifdef PNG_WRITE_FLUSH_SUPPORTED
pngtest_flush);
# else
NULL);
@ -860,7 +860,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_set_read_status_fn(read_ptr, png_read_status_ptr_NULL);
}
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
{
int i;
for (i = 0; i<256; i++)
@ -868,19 +868,19 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_set_read_user_transform_fn(read_ptr, count_filters);
}
#endif
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
zero_samples = 0;
png_set_write_user_transform_fn(write_ptr, count_zero_samples);
#endif
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
# ifndef PNG_HANDLE_CHUNK_ALWAYS
# define PNG_HANDLE_CHUNK_ALWAYS 3
# endif
png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
png_bytep_NULL, 0);
#endif
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
# ifndef PNG_HANDLE_CHUNK_IF_SAFE
# define PNG_HANDLE_CHUNK_IF_SAFE 2
# endif
@ -899,15 +899,15 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
&color_type, &interlace_type, &compression_type, &filter_type))
{
png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
color_type, interlace_type, compression_type, filter_type);
#else
color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
#endif
}
}
#if defined(PNG_FIXED_POINT_SUPPORTED)
#if defined(PNG_cHRM_SUPPORTED)
#ifdef PNG_FIXED_POINT_SUPPORTED
#ifdef PNG_cHRM_SUPPORTED
{
png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
blue_y;
@ -919,7 +919,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_gAMA_SUPPORTED)
#ifdef PNG_gAMA_SUPPORTED
{
png_fixed_point gamma;
@ -928,8 +928,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
#endif
#else /* Use floating point versions */
#if defined(PNG_FLOATING_POINT_SUPPORTED)
#if defined(PNG_cHRM_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
#ifdef PNG_cHRM_SUPPORTED
{
double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
blue_y;
@ -941,7 +941,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_gAMA_SUPPORTED)
#ifdef PNG_gAMA_SUPPORTED
{
double gamma;
@ -951,7 +951,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#endif
#endif /* Floating point */
#endif /* Fixed point */
#if defined(PNG_iCCP_SUPPORTED)
#ifdef PNG_iCCP_SUPPORTED
{
png_charp name;
png_charp profile;
@ -966,7 +966,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_sRGB_SUPPORTED)
#ifdef PNG_sRGB_SUPPORTED
{
int intent;
@ -981,7 +981,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
}
#if defined(PNG_bKGD_SUPPORTED)
#ifdef PNG_bKGD_SUPPORTED
{
png_color_16p background;
@ -991,7 +991,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_hIST_SUPPORTED)
#ifdef PNG_hIST_SUPPORTED
{
png_uint_16p hist;
@ -999,7 +999,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_set_hIST(write_ptr, write_info_ptr, hist);
}
#endif
#if defined(PNG_oFFs_SUPPORTED)
#ifdef PNG_oFFs_SUPPORTED
{
png_int_32 offset_x, offset_y;
int unit_type;
@ -1011,7 +1011,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_pCAL_SUPPORTED)
#ifdef PNG_pCAL_SUPPORTED
{
png_charp purpose, units;
png_charpp params;
@ -1026,7 +1026,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_pHYs_SUPPORTED)
#ifdef PNG_pHYs_SUPPORTED
{
png_uint_32 res_x, res_y;
int unit_type;
@ -1035,7 +1035,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
}
#endif
#if defined(PNG_sBIT_SUPPORTED)
#ifdef PNG_sBIT_SUPPORTED
{
png_color_8p sig_bit;
@ -1043,7 +1043,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
}
#endif
#if defined(PNG_sCAL_SUPPORTED)
#ifdef PNG_sCAL_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
{
int unit;
@ -1070,7 +1070,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#endif
#endif
#endif
#if defined(PNG_TEXT_SUPPORTED)
#ifdef PNG_TEXT_SUPPORTED
{
png_textp text_ptr;
int num_text;
@ -1082,14 +1082,14 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_tIME_SUPPORTED)
#ifdef PNG_tIME_SUPPORTED
{
png_timep mod_time;
if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
{
png_set_tIME(write_ptr, write_info_ptr, mod_time);
#if defined(PNG_TIME_RFC1123_SUPPORTED)
#ifdef PNG_TIME_RFC1123_SUPPORTED
/* We have to use png_memcpy instead of "=" because the string
* pointed to by png_convert_to_rfc1123() gets free'ed before
* we use it.
@ -1103,7 +1103,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_tRNS_SUPPORTED)
#ifdef PNG_tRNS_SUPPORTED
{
png_bytep trans;
int num_trans;
@ -1112,11 +1112,11 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
&trans_values))
{
int sample_max = (1 << read_info_ptr->bit_depth);
int sample_max = (1 << bit_depth);
/* libpng doesn't reject a tRNS chunk with out-of-range samples */
if (!((read_info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
if (!((color_type == PNG_COLOR_TYPE_GRAY &&
(int)trans_values->gray > sample_max) ||
(read_info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
(color_type == PNG_COLOR_TYPE_RGB &&
((int)trans_values->red > sample_max ||
(int)trans_values->green > sample_max ||
(int)trans_values->blue > sample_max))))
@ -1125,7 +1125,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
{
png_unknown_chunkp unknowns;
int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
@ -1154,7 +1154,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
*/
png_write_info(write_ptr, write_info_ptr);
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
if (user_chunk_data[0] != 0)
{
png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
@ -1248,17 +1248,17 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
#endif
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
#endif
png_debug(0, "Reading and writing end_info data");
png_read_end(read_ptr, end_info_ptr);
#if defined(PNG_TEXT_SUPPORTED)
#ifdef PNG_TEXT_SUPPORTED
{
png_textp text_ptr;
int num_text;
@ -1270,14 +1270,14 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_tIME_SUPPORTED)
#ifdef PNG_tIME_SUPPORTED
{
png_timep mod_time;
if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
{
png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
#if defined(PNG_TIME_RFC1123_SUPPORTED)
#ifdef PNG_TIME_RFC1123_SUPPORTED
/* We have to use png_memcpy instead of "=" because the string
pointed to by png_convert_to_rfc1123() gets free'ed before
we use it */
@ -1290,7 +1290,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
{
png_unknown_chunkp unknowns;
int num_unknowns;
@ -1346,7 +1346,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
FCLOSE(fpout);
png_debug(0, "Opening files for comparison");
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
#else
@ -1357,7 +1357,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
return (1);
}
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
if ((fpout = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
#else
@ -1527,7 +1527,7 @@ main(int argc, char *argv[])
#endif
for (i=2; i<argc; ++i)
{
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
int k;
#endif
int kerror;
@ -1535,19 +1535,19 @@ main(int argc, char *argv[])
kerror = test_one_file(argv[i], outname);
if (kerror == 0)
{
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
fprintf(STDERR, "\n PASS (%lu zero samples)\n",
(unsigned long)zero_samples);
#else
fprintf(STDERR, " PASS\n");
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
for (k = 0; k<256; k++)
if (filters_used[k])
fprintf(STDERR, " Filter %d was used %lu times\n",
k, (unsigned long)filters_used[k]);
#endif
#if defined(PNG_TIME_RFC1123_SUPPORTED)
#ifdef PNG_TIME_RFC1123_SUPPORTED
if (tIME_chunk_present != 0)
fprintf(STDERR, " tIME = %s\n", tIME_string);
tIME_chunk_present = 0;
@ -1607,23 +1607,23 @@ main(int argc, char *argv[])
{
if (verbose == 1 || i == 2)
{
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
int k;
#endif
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
fprintf(STDERR, "\n PASS (%lu zero samples)\n",
(unsigned long)zero_samples);
#else
fprintf(STDERR, " PASS\n");
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
for (k = 0; k<256; k++)
if (filters_used[k])
fprintf(STDERR, " Filter %d was used %lu times\n",
k,
(unsigned long)filters_used[k]);
#endif
#if defined(PNG_TIME_RFC1123_SUPPORTED)
#ifdef PNG_TIME_RFC1123_SUPPORTED
if (tIME_chunk_present != 0)
fprintf(STDERR, " tIME = %s\n", tIME_string);
#endif /* PNG_TIME_RFC1123_SUPPORTED */
@ -1689,4 +1689,4 @@ main(int argc, char *argv[])
}
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_0_50 your_png_h_is_not_version_1_0_50;
typedef version_1_0_51rc01 your_png_h_is_not_version_1_0_51rc01;

39
pngtrans.c
View File

@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* Last changed in libpng 1.2.36 [May 14, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -21,6 +21,7 @@ void PNGAPI
png_set_bgr(png_structp png_ptr)
{
png_debug(1, "in png_set_bgr");
if (png_ptr == NULL)
return;
png_ptr->transformations |= PNG_BGR;
@ -33,6 +34,7 @@ void PNGAPI
png_set_swap(png_structp png_ptr)
{
png_debug(1, "in png_set_swap");
if (png_ptr == NULL)
return;
if (png_ptr->bit_depth == 16)
@ -46,6 +48,7 @@ void PNGAPI
png_set_packing(png_structp png_ptr)
{
png_debug(1, "in png_set_packing");
if (png_ptr == NULL)
return;
if (png_ptr->bit_depth < 8)
@ -62,6 +65,7 @@ void PNGAPI
png_set_packswap(png_structp png_ptr)
{
png_debug(1, "in png_set_packswap");
if (png_ptr == NULL)
return;
if (png_ptr->bit_depth < 8)
@ -74,6 +78,7 @@ void PNGAPI
png_set_shift(png_structp png_ptr, png_color_8p true_bits)
{
png_debug(1, "in png_set_shift");
if (png_ptr == NULL)
return;
png_ptr->transformations |= PNG_SHIFT;
@ -87,6 +92,7 @@ int PNGAPI
png_set_interlace_handling(png_structp png_ptr)
{
png_debug(1, "in png_set_interlace handling");
if (png_ptr && png_ptr->interlaced)
{
png_ptr->transformations |= PNG_INTERLACE;
@ -107,10 +113,15 @@ void PNGAPI
png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
{
png_debug(1, "in png_set_filler");
if (png_ptr == NULL)
return;
png_ptr->transformations |= PNG_FILLER;
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->filler = (png_byte)filler;
#else
png_ptr->filler = (png_uint_16)filler;
#endif
if (filler_loc == PNG_FILLER_AFTER)
png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
else
@ -135,12 +146,13 @@ png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
}
}
#if !defined(PNG_1_0_X)
#ifndef PNG_1_0_X
/* Added to libpng-1.2.7 */
void PNGAPI
png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
{
png_debug(1, "in png_set_add_alpha");
if (png_ptr == NULL)
return;
png_set_filler(png_ptr, filler, filler_loc);
@ -156,6 +168,7 @@ void PNGAPI
png_set_swap_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_swap_alpha");
if (png_ptr == NULL)
return;
png_ptr->transformations |= PNG_SWAP_ALPHA;
@ -168,6 +181,7 @@ void PNGAPI
png_set_invert_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_invert_alpha");
if (png_ptr == NULL)
return;
png_ptr->transformations |= PNG_INVERT_ALPHA;
@ -179,6 +193,7 @@ void PNGAPI
png_set_invert_mono(png_structp png_ptr)
{
png_debug(1, "in png_set_invert_mono");
if (png_ptr == NULL)
return;
png_ptr->transformations |= PNG_INVERT_MONO;
@ -189,10 +204,11 @@ void /* PRIVATE */
png_do_invert(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_invert");
/* This test removed from libpng version 1.0.13 and 1.2.0:
* if (row_info->bit_depth == 1 &&
*/
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row == NULL || row_info == NULL)
return;
#endif
@ -244,8 +260,9 @@ void /* PRIVATE */
png_do_swap(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_swap");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
row_info->bit_depth == 16)
@ -375,8 +392,9 @@ void /* PRIVATE */
png_do_packswap(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_packswap");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
row_info->bit_depth < 8)
@ -407,7 +425,8 @@ void /* PRIVATE */
png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
{
png_debug(1, "in png_do_strip_filler");
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
@ -565,8 +584,9 @@ void /* PRIVATE */
png_do_bgr(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_bgr");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))
@ -644,9 +664,10 @@ png_set_user_transform_info(png_structp png_ptr, png_voidp
user_transform_ptr, int user_transform_depth, int user_transform_channels)
{
png_debug(1, "in png_set_user_transform_info");
if (png_ptr == NULL)
return;
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
png_ptr->user_transform_ptr = user_transform_ptr;
png_ptr->user_transform_depth = (png_byte)user_transform_depth;
png_ptr->user_transform_channels = (png_byte)user_transform_channels;
@ -668,7 +689,7 @@ png_get_user_transform_ptr(png_structp png_ptr)
{
if (png_ptr == NULL)
return (NULL);
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
return ((png_voidp)png_ptr->user_transform_ptr);
#else
return (NULL);

28
pngwio.c
View File

@ -1,7 +1,7 @@
/* pngwio.c - functions for data output
*
* Last changed in libpng 1.2.37 [June 4, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -38,7 +38,7 @@ png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
png_error(png_ptr, "Call to NULL write function");
}
#if !defined(PNG_NO_STDIO)
#ifdef PNG_STDIO_SUPPORTED
/* This is the function that does the actual writing of data. If you are
* not writing to a standard C stream, you should create a replacement
* write_data function and use it at run time with png_set_write_fn(), rather
@ -52,7 +52,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
if (png_ptr == NULL)
return;
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
if ( !WriteFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
check = 0;
#else
@ -84,7 +84,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
if ((png_bytep)near_data == data)
{
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
if ( !WriteFile(io_ptr, near_data, length, &check, NULL) )
check = 0;
#else
@ -101,7 +101,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
written = MIN(NEAR_BUF_SIZE, remaining);
png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
if ( !WriteFile(io_ptr, buf, written, &err, NULL) )
err = 0;
#else
@ -129,7 +129,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
* to disk). After png_flush is called, there should be no data pending
* writing in any buffers.
*/
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
#ifdef PNG_WRITE_FLUSH_SUPPORTED
void /* PRIVATE */
png_flush(png_structp png_ptr)
{
@ -137,16 +137,16 @@ png_flush(png_structp png_ptr)
(*(png_ptr->output_flush_fn))(png_ptr);
}
#if !defined(PNG_NO_STDIO)
#ifdef PNG_STDIO_SUPPORTED
void PNGAPI
png_default_flush(png_structp png_ptr)
{
#if !defined(_WIN32_WCE)
#ifndef _WIN32_WCE
png_FILE_p io_ptr;
#endif
if (png_ptr == NULL)
return;
#if !defined(_WIN32_WCE)
#ifndef _WIN32_WCE
io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));
fflush(io_ptr);
#endif
@ -192,7 +192,7 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
png_ptr->io_ptr = io_ptr;
#if !defined(PNG_NO_STDIO)
#ifdef PNG_STDIO_SUPPORTED
if (write_data_fn != NULL)
png_ptr->write_data_fn = write_data_fn;
@ -202,8 +202,8 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
png_ptr->write_data_fn = write_data_fn;
#endif
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
#if !defined(PNG_NO_STDIO)
#ifdef PNG_WRITE_FLUSH_SUPPORTED
#ifdef PNG_STDIO_SUPPORTED
if (output_flush_fn != NULL)
png_ptr->output_flush_fn = output_flush_fn;
@ -225,8 +225,8 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
}
}
#if defined(USE_FAR_KEYWORD)
#if defined(_MSC_VER)
#ifdef USE_FAR_KEYWORD
#ifdef _MSC_VER
void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
{
void *near_ptr;

367
pngwrite.c
View File

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* Last changed in libpng 1.2.37 [June 4, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -29,23 +29,25 @@ void PNGAPI
png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_write_info_before_PLTE");
if (png_ptr == NULL || info_ptr == NULL)
return;
if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
{
png_write_sig(png_ptr); /* Write PNG signature */
#if defined(PNG_MNG_FEATURES_SUPPORTED)
/* Write PNG signature */
png_write_sig(png_ptr);
#ifdef PNG_MNG_FEATURES_SUPPORTED
if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&(png_ptr->mng_features_permitted))
{
png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
png_ptr->mng_features_permitted=0;
png_ptr->mng_features_permitted = 0;
}
#endif
/* Write IHDR information. */
png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height,
info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type,
info_ptr->filter_type,
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
info_ptr->interlace_type);
#else
0);
@ -53,7 +55,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
/* The rest of these check to see if the valid field has the appropriate
* flag set, and if it does, writes the chunk.
*/
#if defined(PNG_WRITE_gAMA_SUPPORTED)
#ifdef PNG_WRITE_gAMA_SUPPORTED
if (info_ptr->valid & PNG_INFO_gAMA)
{
# ifdef PNG_FLOATING_POINT_SUPPORTED
@ -65,20 +67,20 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
#endif
}
#endif
#if defined(PNG_WRITE_sRGB_SUPPORTED)
#ifdef PNG_WRITE_sRGB_SUPPORTED
if (info_ptr->valid & PNG_INFO_sRGB)
png_write_sRGB(png_ptr, (int)info_ptr->srgb_intent);
#endif
#if defined(PNG_WRITE_iCCP_SUPPORTED)
#ifdef PNG_WRITE_iCCP_SUPPORTED
if (info_ptr->valid & PNG_INFO_iCCP)
png_write_iCCP(png_ptr, info_ptr->iccp_name, PNG_COMPRESSION_TYPE_BASE,
info_ptr->iccp_profile, (int)info_ptr->iccp_proflen);
#endif
#if defined(PNG_WRITE_sBIT_SUPPORTED)
#ifdef PNG_WRITE_sBIT_SUPPORTED
if (info_ptr->valid & PNG_INFO_sBIT)
png_write_sBIT(png_ptr, &(info_ptr->sig_bit), info_ptr->color_type);
#endif
#if defined(PNG_WRITE_cHRM_SUPPORTED)
#ifdef PNG_WRITE_cHRM_SUPPORTED
if (info_ptr->valid & PNG_INFO_cHRM)
{
#ifdef PNG_FLOATING_POINT_SUPPORTED
@ -98,7 +100,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
#endif
}
#endif
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
if (info_ptr->unknown_chunks_num)
{
png_unknown_chunk *up;
@ -109,7 +111,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
up++)
{
int keep=png_handle_as_unknown(png_ptr, up->name);
int keep = png_handle_as_unknown(png_ptr, up->name);
if (keep != PNG_HANDLE_CHUNK_NEVER &&
up->location && !(up->location & PNG_HAVE_PLTE) &&
!(up->location & PNG_HAVE_IDAT) &&
@ -147,16 +149,16 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_error(png_ptr, "Valid palette required for paletted images");
#if defined(PNG_WRITE_tRNS_SUPPORTED)
#ifdef PNG_WRITE_tRNS_SUPPORTED
if (info_ptr->valid & PNG_INFO_tRNS)
{
#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
/* Invert the alpha channel (in tRNS) */
if ((png_ptr->transformations & PNG_INVERT_ALPHA) &&
info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
int j;
for (j=0; j<(int)info_ptr->num_trans; j++)
for (j = 0; j<(int)info_ptr->num_trans; j++)
info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]);
}
#endif
@ -164,30 +166,30 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
info_ptr->num_trans, info_ptr->color_type);
}
#endif
#if defined(PNG_WRITE_bKGD_SUPPORTED)
#ifdef PNG_WRITE_bKGD_SUPPORTED
if (info_ptr->valid & PNG_INFO_bKGD)
png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type);
#endif
#if defined(PNG_WRITE_hIST_SUPPORTED)
#ifdef PNG_WRITE_hIST_SUPPORTED
if (info_ptr->valid & PNG_INFO_hIST)
png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette);
#endif
#if defined(PNG_WRITE_oFFs_SUPPORTED)
#ifdef PNG_WRITE_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
png_write_oFFs(png_ptr, info_ptr->x_offset, info_ptr->y_offset,
info_ptr->offset_unit_type);
#endif
#if defined(PNG_WRITE_pCAL_SUPPORTED)
#ifdef PNG_WRITE_pCAL_SUPPORTED
if (info_ptr->valid & PNG_INFO_pCAL)
png_write_pCAL(png_ptr, info_ptr->pcal_purpose, info_ptr->pcal_X0,
info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams,
info_ptr->pcal_units, info_ptr->pcal_params);
#endif
#if defined(PNG_sCAL_SUPPORTED)
#ifdef PNG_sCAL_SUPPORTED
if (info_ptr->valid & PNG_INFO_sCAL)
#if defined(PNG_WRITE_sCAL_SUPPORTED)
#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
#ifdef PNG_WRITE_sCAL_SUPPORTED
#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
png_write_sCAL(png_ptr, (int)info_ptr->scal_unit,
info_ptr->scal_pixel_width, info_ptr->scal_pixel_height);
#else /* !FLOATING_POINT */
@ -202,13 +204,13 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
#endif /* WRITE_sCAL */
#endif /* sCAL */
#if defined(PNG_WRITE_pHYs_SUPPORTED)
#ifdef PNG_WRITE_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
png_write_pHYs(png_ptr, info_ptr->x_pixels_per_unit,
info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type);
#endif /* pHYs */
#if defined(PNG_WRITE_tIME_SUPPORTED)
#ifdef PNG_WRITE_tIME_SUPPORTED
if (info_ptr->valid & PNG_INFO_tIME)
{
png_write_tIME(png_ptr, &(info_ptr->mod_time));
@ -216,13 +218,13 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
}
#endif /* tIME */
#if defined(PNG_WRITE_sPLT_SUPPORTED)
#ifdef PNG_WRITE_sPLT_SUPPORTED
if (info_ptr->valid & PNG_INFO_sPLT)
for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
png_write_sPLT(png_ptr, info_ptr->splt_palettes + i);
#endif /* sPLT */
#if defined(PNG_WRITE_TEXT_SUPPORTED)
#ifdef PNG_WRITE_TEXT_SUPPORTED
/* Check to see if we need to write text chunks */
for (i = 0; i < info_ptr->num_text; i++)
{
@ -231,7 +233,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
/* An internationalized chunk? */
if (info_ptr->text[i].compression > 0)
{
#if defined(PNG_WRITE_iTXt_SUPPORTED)
#ifdef PNG_WRITE_iTXt_SUPPORTED
/* Write international chunk */
png_write_iTXt(png_ptr,
info_ptr->text[i].compression,
@ -248,7 +250,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
/* If we want a compressed text chunk */
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt)
{
#if defined(PNG_WRITE_zTXt_SUPPORTED)
#ifdef PNG_WRITE_zTXt_SUPPORTED
/* Write compressed chunk */
png_write_zTXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text, 0,
@ -261,7 +263,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
}
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
{
#if defined(PNG_WRITE_tEXt_SUPPORTED)
#ifdef PNG_WRITE_tEXt_SUPPORTED
/* Write uncompressed chunk */
png_write_tEXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text,
@ -276,18 +278,18 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
}
#endif /* tEXt */
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
if (info_ptr->unknown_chunks_num)
{
png_unknown_chunk *up;
png_unknown_chunk *up;
png_debug(5, "writing extra chunks");
png_debug(5, "writing extra chunks");
for (up = info_ptr->unknown_chunks;
up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
up++)
{
int keep=png_handle_as_unknown(png_ptr, up->name);
for (up = info_ptr->unknown_chunks;
up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
up++)
{
int keep = png_handle_as_unknown(png_ptr, up->name);
if (keep != PNG_HANDLE_CHUNK_NEVER &&
up->location && (up->location & PNG_HAVE_PLTE) &&
!(up->location & PNG_HAVE_IDAT) &&
@ -296,7 +298,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
{
png_write_chunk(png_ptr, up->name, up->data, up->size);
}
}
}
}
#endif
}
@ -310,6 +312,7 @@ void PNGAPI
png_write_end(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_write_end");
if (png_ptr == NULL)
return;
if (!(png_ptr->mode & PNG_HAVE_IDAT))
@ -318,16 +321,16 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
/* See if user wants us to write information chunks */
if (info_ptr != NULL)
{
#if defined(PNG_WRITE_TEXT_SUPPORTED)
int i; /* Local index variable */
#ifdef PNG_WRITE_TEXT_SUPPORTED
int i; /* local index variable */
#endif
#if defined(PNG_WRITE_tIME_SUPPORTED)
#ifdef PNG_WRITE_tIME_SUPPORTED
/* Check to see if user has supplied a time chunk */
if ((info_ptr->valid & PNG_INFO_tIME) &&
!(png_ptr->mode & PNG_WROTE_tIME))
png_write_tIME(png_ptr, &(info_ptr->mod_time));
#endif
#if defined(PNG_WRITE_TEXT_SUPPORTED)
#ifdef PNG_WRITE_TEXT_SUPPORTED
/* Loop through comment chunks */
for (i = 0; i < info_ptr->num_text; i++)
{
@ -336,23 +339,23 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
/* An internationalized chunk? */
if (info_ptr->text[i].compression > 0)
{
#if defined(PNG_WRITE_iTXt_SUPPORTED)
/* Write international chunk */
png_write_iTXt(png_ptr,
info_ptr->text[i].compression,
info_ptr->text[i].key,
info_ptr->text[i].lang,
info_ptr->text[i].lang_key,
info_ptr->text[i].text);
#ifdef PNG_WRITE_iTXt_SUPPORTED
/* Write international chunk */
png_write_iTXt(png_ptr,
info_ptr->text[i].compression,
info_ptr->text[i].key,
info_ptr->text[i].lang,
info_ptr->text[i].lang_key,
info_ptr->text[i].text);
#else
png_warning(png_ptr, "Unable to write international text");
png_warning(png_ptr, "Unable to write international text");
#endif
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
/* Mark this chunk as written */
info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
}
else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt)
{
#if defined(PNG_WRITE_zTXt_SUPPORTED)
#ifdef PNG_WRITE_zTXt_SUPPORTED
/* Write compressed chunk */
png_write_zTXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text, 0,
@ -365,7 +368,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
}
else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
{
#if defined(PNG_WRITE_tEXt_SUPPORTED)
#ifdef PNG_WRITE_tEXt_SUPPORTED
/* Write uncompressed chunk */
png_write_tEXt(png_ptr, info_ptr->text[i].key,
info_ptr->text[i].text, 0);
@ -378,18 +381,18 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
}
}
#endif
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
if (info_ptr->unknown_chunks_num)
{
png_unknown_chunk *up;
png_unknown_chunk *up;
png_debug(5, "writing extra chunks");
png_debug(5, "writing extra chunks");
for (up = info_ptr->unknown_chunks;
up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
up++)
{
int keep=png_handle_as_unknown(png_ptr, up->name);
for (up = info_ptr->unknown_chunks;
up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
up++)
{
int keep = png_handle_as_unknown(png_ptr, up->name);
if (keep != PNG_HANDLE_CHUNK_NEVER &&
up->location && (up->location & PNG_AFTER_IDAT) &&
((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
@ -397,7 +400,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
{
png_write_chunk(png_ptr, up->name, up->data, up->size);
}
}
}
}
#endif
}
@ -420,13 +423,13 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
#endif
}
#if defined(PNG_WRITE_tIME_SUPPORTED)
#if !defined(_WIN32_WCE)
/* "time.h" functions are not supported on WindowsCE */
#ifdef PNG_CONVERT_tIME_SUPPORTED
/* "tm" structure is not supported on WindowsCE */
void PNGAPI
png_convert_from_struct_tm(png_timep ptime, struct tm FAR * ttime)
{
png_debug(1, "in png_convert_from_struct_tm");
ptime->year = (png_uint_16)(1900 + ttime->tm_year);
ptime->month = (png_byte)(ttime->tm_mon + 1);
ptime->day = (png_byte)ttime->tm_mday;
@ -441,11 +444,11 @@ png_convert_from_time_t(png_timep ptime, time_t ttime)
struct tm *tbuf;
png_debug(1, "in png_convert_from_time_t");
tbuf = gmtime(&ttime);
png_convert_from_struct_tm(ptime, tbuf);
}
#endif
#endif
/* Initialize png_ptr structure, and allocate any memory needed */
png_structp PNGAPI
@ -465,16 +468,18 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
{
#endif /* PNG_USER_MEM_SUPPORTED */
#ifdef PNG_SETJMP_SUPPORTED
volatile
volatile
#endif
png_structp png_ptr;
png_structp png_ptr;
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
jmp_buf jmpbuf;
#endif
#endif
int i;
png_debug(1, "in png_create_write_struct");
#ifdef PNG_USER_MEM_SUPPORTED
png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
(png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
@ -486,8 +491,8 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
/* 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;
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
#endif
#ifdef PNG_SETJMP_SUPPORTED
@ -498,8 +503,13 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#endif
{
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf=NULL;
png_destroy_struct(png_ptr);
png_ptr->zbuf = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)png_ptr,
(png_free_ptr)free_fn, (png_voidp)mem_ptr);
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
return (NULL);
}
#ifdef USE_FAR_KEYWORD
@ -514,12 +524,12 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
if (user_png_ver)
{
i=0;
do
{
if (user_png_ver[i] != png_libpng_ver[i])
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
} while (png_libpng_ver[i++]);
i = 0;
do
{
if (user_png_ver[i] != png_libpng_ver[i])
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
} while (png_libpng_ver[i++]);
}
if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
@ -533,14 +543,14 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
(user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
(user_png_ver[0] == '0' && user_png_ver[2] < '9'))
{
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char msg[80];
if (user_png_ver)
{
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
png_snprintf(msg, 80,
"Application is running with png.c from libpng-%.20s",
@ -548,7 +558,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_warning(png_ptr, msg);
#endif
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags=0;
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"Incompatible libpng version in application and library");
@ -558,20 +568,21 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
(png_uint_32)png_ptr->zbuf_size);
png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL,
png_flush_ptr_NULL);
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
1, png_doublep_NULL, png_doublep_NULL);
#endif
#ifdef PNG_SETJMP_SUPPORTED
/* Applications that neglect to set up their own setjmp() and then encounter
a png_error() will longjmp here. Since the jmpbuf is then meaningless we
abort instead of returning. */
/* Applications that neglect to set up their own setjmp() and then
* encounter a png_error() will longjmp here. Since the jmpbuf is
* then meaningless we abort instead of returning.
*/
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
PNG_ABORT();
@ -601,18 +612,18 @@ png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
{
/* We only come here via pre-1.0.12-compiled applications */
if (png_ptr == NULL) return;
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
if (png_sizeof(png_struct) > png_struct_size ||
png_sizeof(png_info) > png_info_size)
{
char msg[80];
png_ptr->warning_fn=NULL;
png_ptr->warning_fn = NULL;
if (user_png_ver)
{
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
png_snprintf(msg, 80,
"Application is running with png.c from libpng-%.20s",
@ -621,23 +632,23 @@ png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
}
#endif
if (png_sizeof(png_struct) > png_struct_size)
{
png_ptr->error_fn=NULL;
{
png_ptr->error_fn = NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags=0;
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"The png struct allocated by the application for writing is too small.");
}
png_error(png_ptr,
"The png struct allocated by the application for writing is too small.");
}
if (png_sizeof(png_info) > png_info_size)
{
png_ptr->error_fn=NULL;
{
png_ptr->error_fn = NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags=0;
png_ptr->flags = 0;
#endif
png_error(png_ptr,
"The info struct allocated by the application for writing is too small.");
}
png_error(png_ptr,
"The info struct allocated by the application for writing is too small.");
}
png_write_init_3(&png_ptr, user_png_ver, png_struct_size);
}
#endif /* PNG_1_0_X || PNG_1_2_X */
@ -647,9 +658,9 @@ void PNGAPI
png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
png_size_t png_struct_size)
{
png_structp png_ptr=*ptr_ptr;
png_structp png_ptr = *ptr_ptr;
#ifdef PNG_SETJMP_SUPPORTED
jmp_buf tmp_jmp; /* To save current jump buffer */
jmp_buf tmp_jmp; /* to save current jump buffer */
#endif
int i = 0;
@ -659,17 +670,16 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
do
{
if (user_png_ver[i] != png_libpng_ver[i])
{
if (user_png_ver[i] != png_libpng_ver[i])
{
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
#else
png_ptr->warning_fn=NULL;
png_warning(png_ptr,
png_ptr->warning_fn = NULL;
png_warning(png_ptr,
"Application uses deprecated png_write_init() and should be recompiled.");
break;
#endif
}
}
} while (png_libpng_ver[i++]);
png_debug(1, "in png_write_init_3");
@ -680,19 +690,19 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
#endif
if (png_sizeof(png_struct) > png_struct_size)
{
png_destroy_struct(png_ptr);
png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
*ptr_ptr = png_ptr;
}
{
png_destroy_struct(png_ptr);
png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
*ptr_ptr = png_ptr;
}
/* Reset all variables to 0 */
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;
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
#endif
#ifdef PNG_SETJMP_SUPPORTED
@ -706,9 +716,8 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
/* Initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
(png_uint_32)png_ptr->zbuf_size);
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
1, png_doublep_NULL, png_doublep_NULL);
#endif
@ -723,8 +732,8 @@ void PNGAPI
png_write_rows(png_structp png_ptr, png_bytepp row,
png_uint_32 num_rows)
{
png_uint_32 i; /* Row counter */
png_bytepp rp; /* Row pointer */
png_uint_32 i; /* row counter */
png_bytepp rp; /* row pointer */
png_debug(1, "in png_write_rows");
@ -744,15 +753,16 @@ png_write_rows(png_structp png_ptr, png_bytepp row,
void PNGAPI
png_write_image(png_structp png_ptr, png_bytepp image)
{
png_uint_32 i; /* Row index */
int pass, num_pass; /* Pass variables */
png_bytepp rp; /* Points to current row */
png_uint_32 i; /* row index */
int pass, num_pass; /* pass variables */
png_bytepp rp; /* points to current row */
if (png_ptr == NULL)
return;
png_debug(1, "in png_write_image");
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* Initialize interlace handling. If image is not interlaced,
* this will set pass to 1
*/
@ -777,6 +787,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
{
if (png_ptr == NULL)
return;
png_debug2(1, "in png_write_row (row %ld, pass %d)",
png_ptr->row_number, png_ptr->pass);
@ -821,7 +832,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
png_write_start_row(png_ptr);
}
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* If interlaced and not interested in row, return */
if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
{
@ -902,7 +913,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
png_memcpy_check(png_ptr, png_ptr->row_buf + 1, row,
png_ptr->row_info.rowbytes);
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* Handle interlacing */
if (png_ptr->interlaced && png_ptr->pass < 6 &&
(png_ptr->transformations & PNG_INTERLACE))
@ -922,7 +933,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
if (png_ptr->transformations)
png_do_write_transformations(png_ptr);
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
/* Write filter_method 64 (intrapixel differencing) only if
* 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
* 2. Libpng did not write a PNG signature (this filter_method is only
@ -947,12 +958,13 @@ png_write_row(png_structp png_ptr, png_bytep row)
(*(png_ptr->write_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
}
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
#ifdef PNG_WRITE_FLUSH_SUPPORTED
/* Set the automatic flush interval or 0 to turn flushing off */
void PNGAPI
png_set_flush(png_structp png_ptr, int nrows)
{
png_debug(1, "in png_set_flush");
if (png_ptr == NULL)
return;
png_ptr->flush_dist = (nrows < 0 ? 0 : nrows);
@ -965,6 +977,7 @@ png_write_flush(png_structp png_ptr)
int wrote_IDAT;
png_debug(1, "in png_write_flush");
if (png_ptr == NULL)
return;
/* We have already written out all of the data */
@ -1025,6 +1038,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
#endif
png_debug(1, "in png_destroy_write_struct");
if (png_ptr_ptr != NULL)
{
png_ptr = *png_ptr_ptr;
@ -1051,11 +1065,11 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
{
png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
if (png_ptr->num_chunk_list)
{
png_free(png_ptr, png_ptr->chunk_list);
png_ptr->chunk_list=NULL;
png_ptr->chunk_list = NULL;
png_ptr->num_chunk_list = 0;
}
#endif
@ -1099,13 +1113,14 @@ png_write_destroy(png_structp png_ptr)
#endif
png_debug(1, "in png_write_destroy");
/* Free any memory zlib uses */
deflateEnd(&png_ptr->zstream);
/* Free our memory. png_free checks NULL for us. */
png_free(png_ptr, png_ptr->zbuf);
png_free(png_ptr, png_ptr->row_buf);
#ifndef PNG_NO_WRITE_FILTER
#ifdef PNG_WRITE_FILTER_SUPPORTED
png_free(png_ptr, png_ptr->prev_row);
png_free(png_ptr, png_ptr->sub_row);
png_free(png_ptr, png_ptr->up_row);
@ -1113,11 +1128,11 @@ png_write_destroy(png_structp png_ptr)
png_free(png_ptr, png_ptr->paeth_row);
#endif
#if defined(PNG_TIME_RFC1123_SUPPORTED)
#ifdef PNG_TIME_RFC1123_SUPPORTED
png_free(png_ptr, png_ptr->time_buffer);
#endif
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
png_free(png_ptr, png_ptr->prev_filters);
png_free(png_ptr, png_ptr->filter_weights);
png_free(png_ptr, png_ptr->inv_filter_weights);
@ -1156,9 +1171,10 @@ void PNGAPI
png_set_filter(png_structp png_ptr, int method, int filters)
{
png_debug(1, "in png_set_filter");
if (png_ptr == NULL)
return;
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
(method == PNG_INTRAPIXEL_DIFFERENCING))
method = PNG_FILTER_TYPE_BASE;
@ -1167,26 +1183,26 @@ png_set_filter(png_structp png_ptr, int method, int filters)
{
switch (filters & (PNG_ALL_FILTERS | 0x07))
{
#ifndef PNG_NO_WRITE_FILTER
#ifdef PNG_WRITE_FILTER_SUPPORTED
case 5:
case 6:
case 7: png_warning(png_ptr, "Unknown row filter for method 0");
#endif /* PNG_NO_WRITE_FILTER */
#endif /* PNG_WRITE_FILTER_SUPPORTED */
case PNG_FILTER_VALUE_NONE:
png_ptr->do_filter=PNG_FILTER_NONE; break;
#ifndef PNG_NO_WRITE_FILTER
png_ptr->do_filter = PNG_FILTER_NONE; break;
#ifdef PNG_WRITE_FILTER_SUPPORTED
case PNG_FILTER_VALUE_SUB:
png_ptr->do_filter=PNG_FILTER_SUB; break;
png_ptr->do_filter = PNG_FILTER_SUB; break;
case PNG_FILTER_VALUE_UP:
png_ptr->do_filter=PNG_FILTER_UP; break;
png_ptr->do_filter = PNG_FILTER_UP; break;
case PNG_FILTER_VALUE_AVG:
png_ptr->do_filter=PNG_FILTER_AVG; break;
png_ptr->do_filter = PNG_FILTER_AVG; break;
case PNG_FILTER_VALUE_PAETH:
png_ptr->do_filter=PNG_FILTER_PAETH; break;
png_ptr->do_filter = PNG_FILTER_PAETH; break;
default: png_ptr->do_filter = (png_byte)filters; break;
#else
default: png_warning(png_ptr, "Unknown row filter for method 0");
#endif /* PNG_NO_WRITE_FILTER */
#endif /* PNG_WRITE_FILTER_SUPPORTED */
}
/* If we have allocated the row_buf, this means we have already started
@ -1200,7 +1216,7 @@ png_set_filter(png_structp png_ptr, int method, int filters)
*/
if (png_ptr->row_buf != NULL)
{
#ifndef PNG_NO_WRITE_FILTER
#ifdef PNG_WRITE_FILTER_SUPPORTED
if ((png_ptr->do_filter & PNG_FILTER_SUB) && png_ptr->sub_row == NULL)
{
png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
@ -1255,7 +1271,7 @@ png_set_filter(png_structp png_ptr, int method, int filters)
}
if (png_ptr->do_filter == PNG_NO_FILTERS)
#endif /* PNG_NO_WRITE_FILTER */
#endif /* PNG_WRITE_FILTER_SUPPORTED */
png_ptr->do_filter = PNG_FILTER_NONE;
}
}
@ -1270,7 +1286,7 @@ png_set_filter(png_structp png_ptr, int method, int filters)
* filtered data going to zlib more consistent, hopefully resulting in
* better compression.
*/
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED) /* GRR 970116 */
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* GRR 970116 */
void PNGAPI
png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
int num_weights, png_doublep filter_weights,
@ -1279,6 +1295,7 @@ png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
int i;
png_debug(1, "in png_set_filter_heuristics");
if (png_ptr == NULL)
return;
if (heuristic_method >= PNG_FILTER_HEURISTIC_LAST)
@ -1393,6 +1410,7 @@ void PNGAPI
png_set_compression_level(png_structp png_ptr, int level)
{
png_debug(1, "in png_set_compression_level");
if (png_ptr == NULL)
return;
png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_LEVEL;
@ -1403,6 +1421,7 @@ void PNGAPI
png_set_compression_mem_level(png_structp png_ptr, int mem_level)
{
png_debug(1, "in png_set_compression_mem_level");
if (png_ptr == NULL)
return;
png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL;
@ -1413,6 +1432,7 @@ void PNGAPI
png_set_compression_strategy(png_structp png_ptr, int strategy)
{
png_debug(1, "in png_set_compression_strategy");
if (png_ptr == NULL)
return;
png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_STRATEGY;
@ -1433,7 +1453,7 @@ png_set_compression_window_bits(png_structp png_ptr, int window_bits)
if (window_bits == 8)
{
png_warning(png_ptr, "Compression window is being reset to 512");
window_bits=9;
window_bits = 9;
}
#endif
png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS;
@ -1444,6 +1464,7 @@ void PNGAPI
png_set_compression_method(png_structp png_ptr, int method)
{
png_debug(1, "in png_set_compression_method");
if (png_ptr == NULL)
return;
if (method != 8)
@ -1460,12 +1481,13 @@ png_set_write_status_fn(png_structp png_ptr, png_write_status_ptr write_row_fn)
png_ptr->write_row_fn = write_row_fn;
}
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
void PNGAPI
png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
write_user_transform_fn)
{
png_debug(1, "in png_set_write_user_transform_fn");
if (png_ptr == NULL)
return;
png_ptr->transformations |= PNG_USER_TRANSFORM;
@ -1474,31 +1496,26 @@ png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
#endif
#if defined(PNG_INFO_IMAGE_SUPPORTED)
#ifdef PNG_INFO_IMAGE_SUPPORTED
void PNGAPI
png_write_png(png_structp png_ptr, png_infop info_ptr,
int transforms, voidp params)
{
if (png_ptr == NULL || info_ptr == NULL)
return;
#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
/* Invert the alpha channel from opacity to transparency */
if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
png_set_invert_alpha(png_ptr);
#endif
/* Write the file header information. */
png_write_info(png_ptr, info_ptr);
/* ------ these transformations don't touch the info structure ------- */
#if defined(PNG_WRITE_INVERT_SUPPORTED)
#ifdef PNG_WRITE_INVERT_SUPPORTED
/* Invert monochrome pixels */
if (transforms & PNG_TRANSFORM_INVERT_MONO)
png_set_invert_mono(png_ptr);
#endif
#if defined(PNG_WRITE_SHIFT_SUPPORTED)
#ifdef PNG_WRITE_SHIFT_SUPPORTED
/* Shift the pixels up to a legal bit depth and fill in
* as appropriate to correctly scale the image.
*/
@ -1507,19 +1524,19 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
png_set_shift(png_ptr, &info_ptr->sig_bit);
#endif
#if defined(PNG_WRITE_PACK_SUPPORTED)
#ifdef PNG_WRITE_PACK_SUPPORTED
/* Pack pixels into bytes */
if (transforms & PNG_TRANSFORM_PACKING)
png_set_packing(png_ptr);
#endif
#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
/* Swap location of alpha bytes from ARGB to RGBA */
if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
png_set_swap_alpha(png_ptr);
#endif
#if defined(PNG_WRITE_FILLER_SUPPORTED)
#ifdef PNG_WRITE_FILLER_SUPPORTED
/* Pack XRGB/RGBX/ARGB/RGBA into * RGB (4 channels -> 3 channels) */
if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER)
png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
@ -1527,24 +1544,30 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
#endif
#if defined(PNG_WRITE_BGR_SUPPORTED)
#ifdef PNG_WRITE_BGR_SUPPORTED
/* Flip BGR pixels to RGB */
if (transforms & PNG_TRANSFORM_BGR)
png_set_bgr(png_ptr);
#endif
#if defined(PNG_WRITE_SWAP_SUPPORTED)
#ifdef PNG_WRITE_SWAP_SUPPORTED
/* Swap bytes of 16-bit files to most significant byte first */
if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
png_set_swap(png_ptr);
#endif
#if defined(PNG_WRITE_PACKSWAP_SUPPORTED)
#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
/* Swap bits of 1, 2, 4 bit packed pixel formats */
if (transforms & PNG_TRANSFORM_PACKSWAP)
png_set_packswap(png_ptr);
#endif
#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
/* Invert the alpha channel from opacity to transparency */
if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
png_set_invert_alpha(png_ptr);
#endif
/* ----------------------- end of transformations ------------------- */
/* Write the bits */

47
pngwtran.c
View File

@ -1,7 +1,7 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* Last changed in libpng 1.2.37 [June 4, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -26,7 +26,7 @@ png_do_write_transformations(png_structp png_ptr)
if (png_ptr == NULL)
return;
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
if (png_ptr->transformations & PNG_USER_TRANSFORM)
if (png_ptr->write_user_transform_fn != NULL)
(*(png_ptr->write_user_transform_fn)) /* User write transform function */
@ -40,48 +40,48 @@ png_do_write_transformations(png_structp png_ptr)
/* png_byte pixel_depth; bits per pixel (depth*channels) */
png_ptr->row_buf + 1); /* start of pixel data for row */
#endif
#if defined(PNG_WRITE_FILLER_SUPPORTED)
#ifdef PNG_WRITE_FILLER_SUPPORTED
if (png_ptr->transformations & PNG_FILLER)
png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
png_ptr->flags);
#endif
#if defined(PNG_WRITE_PACKSWAP_SUPPORTED)
#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
if (png_ptr->transformations & PNG_PACKSWAP)
png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1);
#endif
#if defined(PNG_WRITE_PACK_SUPPORTED)
#ifdef PNG_WRITE_PACK_SUPPORTED
if (png_ptr->transformations & PNG_PACK)
png_do_pack(&(png_ptr->row_info), png_ptr->row_buf + 1,
(png_uint_32)png_ptr->bit_depth);
#endif
#if defined(PNG_WRITE_SWAP_SUPPORTED)
#ifdef PNG_WRITE_SWAP_SUPPORTED
if (png_ptr->transformations & PNG_SWAP_BYTES)
png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1);
#endif
#if defined(PNG_WRITE_SHIFT_SUPPORTED)
#ifdef PNG_WRITE_SHIFT_SUPPORTED
if (png_ptr->transformations & PNG_SHIFT)
png_do_shift(&(png_ptr->row_info), png_ptr->row_buf + 1,
&(png_ptr->shift));
#endif
#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
if (png_ptr->transformations & PNG_SWAP_ALPHA)
png_do_write_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
#endif
#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
if (png_ptr->transformations & PNG_INVERT_ALPHA)
png_do_write_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
#endif
#if defined(PNG_WRITE_BGR_SUPPORTED)
#ifdef PNG_WRITE_BGR_SUPPORTED
if (png_ptr->transformations & PNG_BGR)
png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1);
#endif
#if defined(PNG_WRITE_INVERT_SUPPORTED)
#ifdef PNG_WRITE_INVERT_SUPPORTED
if (png_ptr->transformations & PNG_INVERT_MONO)
png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1);
#endif
}
#if defined(PNG_WRITE_PACK_SUPPORTED)
#ifdef PNG_WRITE_PACK_SUPPORTED
/* Pack pixels into bytes. Pass the true bit depth in bit_depth. The
* row_info bit depth should be 8 (one pixel per byte). The channels
* should be 1 (this only happens on grayscale and paletted images).
@ -90,8 +90,9 @@ void /* PRIVATE */
png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
{
png_debug(1, "in png_do_pack");
if (row_info->bit_depth == 8 &&
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
row_info->channels == 1)
@ -204,7 +205,7 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
}
#endif
#if defined(PNG_WRITE_SHIFT_SUPPORTED)
#ifdef PNG_WRITE_SHIFT_SUPPORTED
/* Shift pixel values to take advantage of whole range. Pass the
* true number of bits in bit_depth. The row should be packed
* according to row_info->bit_depth. Thus, if you had a row of
@ -216,7 +217,8 @@ void /* PRIVATE */
png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
{
png_debug(1, "in png_do_shift");
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL &&
#else
if (
@ -335,12 +337,13 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
}
#endif
#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
void /* PRIVATE */
png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_write_swap_alpha");
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
@ -423,12 +426,13 @@ png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
}
#endif
#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
void /* PRIVATE */
png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_write_invert_alpha");
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL)
#endif
{
@ -512,14 +516,15 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
}
#endif
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
/* Undoes intrapixel differencing */
void /* PRIVATE */
png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_write_intrapixel");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
row != NULL && row_info != NULL &&
#endif
(row_info->color_type & PNG_COLOR_MASK_COLOR))

132
pngwutil.c
View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.2.40 [September 10, 2009]
* Last changed in libpng 1.2.41 [November 18, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -58,7 +58,7 @@ png_save_uint_16(png_bytep buf, unsigned int i)
* we should call png_set_sig_bytes() to tell libpng how many of the
* bytes have already been written.
*/
void /* PRIVATE */
void PNGAPI
png_write_sig(png_structp png_ptr)
{
png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
@ -106,6 +106,7 @@ png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name,
if (png_ptr == NULL)
return;
/* Write the length and the chunk name */
png_save_uint_32(buf, length);
png_memcpy(buf + 4, chunk_name, 4);
@ -192,7 +193,7 @@ png_text_compress(png_structp png_ptr,
if (compression >= PNG_TEXT_COMPRESSION_LAST)
{
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char msg[50];
png_snprintf(msg, 50, "Unknown compression type %d", compression);
png_warning(png_ptr, msg);
@ -459,7 +460,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
* 5. The color_type is RGB or RGBA
*/
if (
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
(color_type == PNG_COLOR_TYPE_RGB ||
@ -487,7 +488,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
png_ptr->bit_depth = (png_byte)bit_depth;
png_ptr->color_type = (png_byte)color_type;
png_ptr->interlaced = (png_byte)interlace_type;
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
png_ptr->filter_type = (png_byte)filter_type;
#endif
png_ptr->compression_type = (png_byte)compression_type;
@ -579,7 +580,7 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
png_debug(1, "in png_write_PLTE");
if ((
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
#endif
num_pal == 0) || num_pal > 256)
@ -607,7 +608,7 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
png_write_chunk_start(png_ptr, (png_bytep)png_PLTE,
(png_uint_32)(num_pal * 3));
#ifndef PNG_NO_POINTER_INDEXING
#ifdef PNG_POINTER_INDEXING_SUPPORTED
for (i = 0, pal_ptr = palette; i < num_pal; i++, pal_ptr++)
{
buf[0] = pal_ptr->red;
@ -700,7 +701,7 @@ png_write_IEND(png_structp png_ptr)
png_ptr->mode |= PNG_HAVE_IEND;
}
#if defined(PNG_WRITE_gAMA_SUPPORTED)
#ifdef PNG_WRITE_gAMA_SUPPORTED
/* Write a gAMA chunk */
#ifdef PNG_FLOATING_POINT_SUPPORTED
void /* PRIVATE */
@ -738,7 +739,7 @@ png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma)
#endif
#endif
#if defined(PNG_WRITE_sRGB_SUPPORTED)
#ifdef PNG_WRITE_sRGB_SUPPORTED
/* Write a sRGB chunk */
void /* PRIVATE */
png_write_sRGB(png_structp png_ptr, int srgb_intent)
@ -758,7 +759,7 @@ png_write_sRGB(png_structp png_ptr, int srgb_intent)
}
#endif
#if defined(PNG_WRITE_iCCP_SUPPORTED)
#ifdef PNG_WRITE_iCCP_SUPPORTED
/* Write an iCCP chunk */
void /* PRIVATE */
png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
@ -839,7 +840,7 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
}
#endif
#if defined(PNG_WRITE_sPLT_SUPPORTED)
#ifdef PNG_WRITE_sPLT_SUPPORTED
/* Write a sPLT chunk */
void /* PRIVATE */
png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
@ -853,7 +854,7 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
int entry_size = (spalette->depth == 8 ? 6 : 10);
int palette_size = entry_size * spalette->nentries;
png_sPLT_entryp ep;
#ifdef PNG_NO_POINTER_INDEXING
#ifndef PNG_POINTER_INDEXING_SUPPORTED
int i;
#endif
@ -870,7 +871,7 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
png_write_chunk_data(png_ptr, (png_bytep)&spalette->depth, (png_size_t)1);
/* Loop through each palette entry, writing appropriately */
#ifndef PNG_NO_POINTER_INDEXING
#ifdef PNG_POINTER_INDEXING_SUPPORTED
for (ep = spalette->entries; ep<spalette->entries + spalette->nentries; ep++)
{
if (spalette->depth == 8)
@ -920,7 +921,7 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
}
#endif
#if defined(PNG_WRITE_sBIT_SUPPORTED)
#ifdef PNG_WRITE_sBIT_SUPPORTED
/* Write the sBIT chunk */
void /* PRIVATE */
png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
@ -977,7 +978,7 @@ png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
}
#endif
#if defined(PNG_WRITE_cHRM_SUPPORTED)
#ifdef PNG_WRITE_cHRM_SUPPORTED
/* Write the cHRM chunk */
#ifdef PNG_FLOATING_POINT_SUPPORTED
void /* PRIVATE */
@ -1004,7 +1005,7 @@ png_write_cHRM(png_structp png_ptr, double white_x, double white_y,
int_blue_x = (png_uint_32)(blue_x * 100000.0 + 0.5);
int_blue_y = (png_uint_32)(blue_y * 100000.0 + 0.5);
#if !defined(PNG_NO_CHECK_cHRM)
#ifdef PNG_CHECK_cHRM_SUPPORTED
if (png_check_cHRM_fixed(png_ptr, int_white_x, int_white_y,
int_red_x, int_red_y, int_green_x, int_green_y, int_blue_x, int_blue_y))
#endif
@ -1042,7 +1043,7 @@ png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x,
png_debug(1, "in png_write_cHRM");
/* Each value is saved in 1/100,000ths */
#if !defined(PNG_NO_CHECK_cHRM)
#ifdef PNG_CHECK_cHRM_SUPPORTED
if (png_check_cHRM_fixed(png_ptr, white_x, white_y, red_x, red_y,
green_x, green_y, blue_x, blue_y))
#endif
@ -1065,7 +1066,7 @@ png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x,
#endif
#endif
#if defined(PNG_WRITE_tRNS_SUPPORTED)
#ifdef PNG_WRITE_tRNS_SUPPORTED
/* Write the tRNS chunk */
void /* PRIVATE */
png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
@ -1122,7 +1123,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
}
#endif
#if defined(PNG_WRITE_bKGD_SUPPORTED)
#ifdef PNG_WRITE_bKGD_SUPPORTED
/* Write the background chunk */
void /* PRIVATE */
png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
@ -1137,7 +1138,7 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
if (color_type == PNG_COLOR_TYPE_PALETTE)
{
if (
#if defined(PNG_MNG_FEATURES_SUPPORTED)
#ifdef PNG_MNG_FEATURES_SUPPORTED
(png_ptr->num_palette ||
(!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) &&
#endif
@ -1176,7 +1177,7 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
}
#endif
#if defined(PNG_WRITE_hIST_SUPPORTED)
#ifdef PNG_WRITE_hIST_SUPPORTED
/* Write the histogram */
void /* PRIVATE */
png_write_hIST(png_structp png_ptr, png_uint_16p hist, int num_hist)
@ -1253,7 +1254,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
if ((png_byte)*kp < 0x20 ||
((png_byte)*kp > 0x7E && (png_byte)*kp < 0xA1))
{
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
char msg[40];
png_snprintf(msg, 40,
@ -1340,7 +1341,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
}
#endif
#if defined(PNG_WRITE_tEXt_SUPPORTED)
#ifdef PNG_WRITE_tEXt_SUPPORTED
/* Write a tEXt chunk */
void /* PRIVATE */
png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
@ -1381,7 +1382,7 @@ png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
}
#endif
#if defined(PNG_WRITE_zTXt_SUPPORTED)
#ifdef PNG_WRITE_zTXt_SUPPORTED
/* Write a compressed text chunk */
void /* PRIVATE */
png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
@ -1441,7 +1442,7 @@ png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
}
#endif
#if defined(PNG_WRITE_iTXt_SUPPORTED)
#ifdef PNG_WRITE_iTXt_SUPPORTED
/* Write an iTXt chunk */
void /* PRIVATE */
png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
@ -1530,7 +1531,7 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
}
#endif
#if defined(PNG_WRITE_oFFs_SUPPORTED)
#ifdef PNG_WRITE_oFFs_SUPPORTED
/* Write the oFFs chunk */
void /* PRIVATE */
png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
@ -1553,7 +1554,7 @@ png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
png_write_chunk(png_ptr, (png_bytep)png_oFFs, buf, (png_size_t)9);
}
#endif
#if defined(PNG_WRITE_pCAL_SUPPORTED)
#ifdef PNG_WRITE_pCAL_SUPPORTED
/* Write the pCAL chunk (described in the PNG extensions document) */
void /* PRIVATE */
png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
@ -1616,9 +1617,9 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
}
#endif
#if defined(PNG_WRITE_sCAL_SUPPORTED)
#ifdef PNG_WRITE_sCAL_SUPPORTED
/* Write the sCAL chunk */
#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
void /* PRIVATE */
png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
{
@ -1631,7 +1632,7 @@ png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
png_debug(1, "in png_write_sCAL");
buf[0] = (char)unit;
#if defined(_WIN32_WCE)
#ifdef _WIN32_WCE
/* sprintf() function is not supported on WindowsCE */
{
wchar_t wc_buf[32];
@ -1690,7 +1691,7 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
#endif
#endif
#if defined(PNG_WRITE_pHYs_SUPPORTED)
#ifdef PNG_WRITE_pHYs_SUPPORTED
/* Write the pHYs chunk */
void /* PRIVATE */
png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit,
@ -1715,7 +1716,7 @@ png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit,
}
#endif
#if defined(PNG_WRITE_tIME_SUPPORTED)
#ifdef PNG_WRITE_tIME_SUPPORTED
/* Write the tIME chunk. Use either png_convert_from_struct_tm()
* or png_convert_from_time_t(), or fill in the structure yourself.
*/
@ -1753,7 +1754,6 @@ void /* PRIVATE */
png_write_start_row(png_structp png_ptr)
{
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
#ifdef PNG_USE_LOCAL_ARRAYS
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
@ -1767,7 +1767,6 @@ png_write_start_row(png_structp png_ptr)
/* Offset to next interlace block in the y direction */
int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
#endif
png_size_t buf_size;
@ -1782,7 +1781,7 @@ png_write_start_row(png_structp png_ptr)
(png_uint_32)buf_size);
png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;
#ifndef PNG_NO_WRITE_FILTER
#ifdef PNG_WRITE_FILTER_SUPPORTED
/* Set up filtering buffer, if using this filter */
if (png_ptr->do_filter & PNG_FILTER_SUB)
{
@ -1794,33 +1793,32 @@ png_write_start_row(png_structp png_ptr)
/* We only need to keep the previous row if we are using one of these. */
if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH))
{
/* Set up previous row buffer */
png_ptr->prev_row = (png_bytep)png_malloc(png_ptr,
(png_uint_32)buf_size);
png_memset(png_ptr->prev_row, 0, buf_size);
/* Set up previous row buffer */
png_ptr->prev_row = (png_bytep)png_calloc(png_ptr,
(png_uint_32)buf_size);
if (png_ptr->do_filter & PNG_FILTER_UP)
{
png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(png_ptr->rowbytes + 1));
(png_uint_32)(png_ptr->rowbytes + 1));
png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
}
if (png_ptr->do_filter & PNG_FILTER_AVG)
{
png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(png_ptr->rowbytes + 1));
(png_uint_32)(png_ptr->rowbytes + 1));
png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
}
if (png_ptr->do_filter & PNG_FILTER_PAETH)
{
png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(png_ptr->rowbytes + 1));
(png_uint_32)(png_ptr->rowbytes + 1));
png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
}
}
#endif /* PNG_NO_WRITE_FILTER */
#endif /* PNG_WRITE_FILTER_SUPPORTED */
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* If interlaced, we need to set up width and height of pass */
@ -1854,7 +1852,6 @@ void /* PRIVATE */
png_write_finish_row(png_structp png_ptr)
{
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
#ifdef PNG_USE_LOCAL_ARRAYS
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
@ -1868,7 +1865,6 @@ png_write_finish_row(png_structp png_ptr)
/* Offset to next interlace block in the y direction */
int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
#endif
#endif
int ret;
@ -1962,7 +1958,7 @@ png_write_finish_row(png_structp png_ptr)
png_ptr->zstream.data_type = Z_BINARY;
}
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
/* Pick out the correct pixels for the interlace pass.
* The basic idea here is to go through the row with a source
* pointer and a destination pointer (sp and dp), and copy the
@ -1973,7 +1969,6 @@ png_write_finish_row(png_structp png_ptr)
void /* PRIVATE */
png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
{
#ifdef PNG_USE_LOCAL_ARRAYS
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
@ -1981,12 +1976,11 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
/* Offset to next interlace block */
int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
#endif
png_debug(1, "in png_do_write_interlace");
/* We don't have to do anything on the last pass (6) */
#if defined(PNG_USELESS_TESTS_SUPPORTED)
#ifdef PNG_USELESS_TESTS_SUPPORTED
if (row != NULL && row_info != NULL && pass < 6)
#else
if (pass < 6)
@ -2146,7 +2140,7 @@ void /* PRIVATE */
png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
{
png_bytep best_row;
#ifndef PNG_NO_WRITE_FILTER
#ifdef PNG_WRITE_FILTER_SUPPORTED
png_bytep prev_row, row_buf;
png_uint_32 mins, bpp;
png_byte filter_to_do = png_ptr->do_filter;
@ -2157,13 +2151,21 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
png_debug(1, "in png_write_find_filter");
#ifndef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->row_number == 0 && filter_to_do == PNG_ALL_FILTERS)
{
/* These will never be selected so we need not test them. */
filter_to_do &= ~(PNG_FILTER_UP | PNG_FILTER_PAETH);
}
#endif
/* Find out how many bytes offset each pixel is */
bpp = (row_info->pixel_depth + 7) >> 3;
prev_row = png_ptr->prev_row;
#endif
best_row = png_ptr->row_buf;
#ifndef PNG_NO_WRITE_FILTER
#ifdef PNG_WRITE_FILTER_SUPPORTED
row_buf = best_row;
mins = PNG_MAXSUM;
@ -2206,7 +2208,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
sum += (v < 128) ? v : 256 - v;
}
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
png_uint_32 sumhi, sumlo;
@ -2270,7 +2272,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
png_uint_32 i;
int v;
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
/* We temporarily increase the "minimum sum" by the factor we
* would reduce the sum of this filter, so that we can do the
* early exit comparison without scaling the sum each time.
@ -2323,7 +2325,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
break;
}
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@ -2384,7 +2386,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
int v;
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@ -2426,7 +2428,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
break;
}
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@ -2489,7 +2491,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
png_uint_32 i;
int v;
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@ -2538,7 +2540,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
break;
}
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@ -2622,7 +2624,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
png_uint_32 i;
int v;
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@ -2703,7 +2705,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
break;
}
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
{
int j;
@ -2739,13 +2741,13 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
best_row = png_ptr->paeth_row;
}
}
#endif /* PNG_NO_WRITE_FILTER */
#endif /* PNG_WRITE_FILTER_SUPPORTED */
/* Do the actual writing of the filtered row data from the chosen filter. */
png_write_filtered_row(png_ptr, best_row);
#ifndef PNG_NO_WRITE_FILTER
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
#ifdef PNG_WRITE_FILTER_SUPPORTED
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
/* Save the type of filter we picked this time for future calculations */
if (png_ptr->num_prev_filters > 0)
{
@ -2757,7 +2759,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
png_ptr->prev_filters[j] = best_row[0];
}
#endif
#endif /* PNG_NO_WRITE_FILTER */
#endif /* PNG_WRITE_FILTER_SUPPORTED */
}
@ -2812,7 +2814,7 @@ png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row)
/* Finish row - updates counters and flushes zlib if last row */
png_write_finish_row(png_ptr);
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
#ifdef PNG_WRITE_FLUSH_SUPPORTED
png_ptr->flush_rows++;
if (png_ptr->flush_dist > 0 &&

36
projects/visualc6/libpng.dsp
View File

@ -56,8 +56,8 @@ MTL=midl.exe
# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
RSC=rc.exe
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG"
# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
@ -87,8 +87,8 @@ MTL=midl.exe
# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
RSC=rc.exe
# ADD BASE RSC /l 0x409 /d "_DEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "_DEBUG" /d PNG_DEBUG=1
# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG" /d PNG_DEBUG=1
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
@ -118,8 +118,8 @@ MTL=midl.exe
# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
RSC=rc.exe
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG" /d PNG_LIBPNG_SPECIALBUILD=""""Use MMX instructions""""
# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG" /d PNG_LIBPNG_SPECIALBUILD=""""Use MMX instructions""""
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
@ -149,8 +149,8 @@ MTL=midl.exe
# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
RSC=rc.exe
# ADD BASE RSC /l 0x409 /d "_DEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "_DEBUG" /d PNG_DEBUG=1 /d PNG_LIBPNG_SPECIALBUILD=""""Use MMX instructions""""
# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG" /d PNG_DEBUG=1 /d PNG_LIBPNG_SPECIALBUILD=""""Use MMX instructions""""
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
@ -180,8 +180,8 @@ MTL=midl.exe
# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
RSC=rc.exe
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG" /dPNG_LIBPNG_DLLFNAME_POSTFIX=""""VB"""" /dPNG_LIBPNG_SPECIALBUILD=""""__stdcall calling convention used for exported functions""""
# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG" /dPNG_LIBPNG_DLLFNAME_POSTFIX=""""VB"""" /dPNG_LIBPNG_SPECIALBUILD=""""__stdcall calling convention used for exported functions""""
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
@ -213,8 +213,8 @@ CPP=cl.exe
# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "PNG_NO_MMX_CODE" /D "WIN32" /D "NDEBUG" /D "_CRT_SECURE_NO_WARNINGS" /FD /c
# SUBTRACT CPP /YX /Yc /Yu
RSC=rc.exe
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG"
# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
@ -240,8 +240,8 @@ CPP=cl.exe
# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D "PNG_NO_MMX_CODE" /D PNG_DEBUG=1 /D "_CRT_SECURE_NO_WARNINGS" /FD /GZ /c
# SUBTRACT CPP /YX /Yc /Yu
RSC=rc.exe
# ADD BASE RSC /l 0x409 /d "_DEBUG"
# ADD RSC /l 0x409 /d "_DEBUG"
# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG"
# ADD RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
@ -267,8 +267,8 @@ CPP=cl.exe
# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_USE_PNGVCRD" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS" /FD /c
# SUBTRACT CPP /YX /Yc /Yu
RSC=rc.exe
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG"
# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
@ -294,8 +294,8 @@ CPP=cl.exe
# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /D "PNG_USE_PNGVCRD" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS" /FD /GZ /c
# SUBTRACT CPP /YX /Yc /Yu
RSC=rc.exe
# ADD BASE RSC /l 0x409 /d "_DEBUG"
# ADD RSC /l 0x409 /d "_DEBUG"
# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG"
# ADD RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo

6
projects/visualc71/libpng.vcproj
View File

@ -139,7 +139,7 @@
Name="VCPreLinkEventTool"/>
<Tool
Name="VCResourceCompilerTool"
AdditionalOptions="/d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;Use MMX instructions&quot;&quot;&quot;&quot;"
AdditionalOptions="/d PNG_CONFIGURE_LIBPNG /d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;Use MMX instructions&quot;&quot;&quot;&quot;"
PreprocessorDefinitions="NDEBUG;_CRT_SECURE_NO_WARNINGS"
Culture="1033"
AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
@ -188,7 +188,7 @@
Name="VCPreLinkEventTool"/>
<Tool
Name="VCResourceCompilerTool"
AdditionalOptions="/d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;Use MMX instructions&quot;&quot;&quot;&quot;"
AdditionalOptions="/d PNG_CONFIGURE_LIBPNG /d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;Use MMX instructions&quot;&quot;&quot;&quot;"
PreprocessorDefinitions="_DEBUG,PNG_DEBUG=1;_CRT_SECURE_NO_WARNINGS"
Culture="1033"
AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
@ -236,7 +236,7 @@
Name="VCPreLinkEventTool"/>
<Tool
Name="VCResourceCompilerTool"
AdditionalOptions="/d PNG_LIBPNG_DLLFNAME_POSTFIX=&quot;&quot;&quot;&quot;VB&quot;&quot;&quot;&quot; /d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;__stdcall calling convention used for exported functions&quot;&quot;&quot;&quot;"
AdditionalOptions="/d PNG_CONFIGURE_LIBPNG /d PNG_LIBPNG_DLLFNAME_POSTFIX=&quot;&quot;&quot;&quot;VB&quot;&quot;&quot;&quot; /d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;__stdcall calling convention used for exported functions&quot;&quot;&quot;&quot;"
PreprocessorDefinitions="NDEBUG;_CRT_SECURE_NO_WARNINGS"
Culture="1033"
AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>

6
projects/wince.txt
View File

@ -1,6 +1,6 @@
A set of project files is available for WinCE. Get
libpng-1.2.5-project-wince.zip from a libpng distribution
site such as http://libpng.sourceforge.net
libpng-1.0.51rc01-project-wince.zip from a libpng distribution
site such as http://libpng.sourceforge.net/index.html
Put the zip file in this directory (projects) and then run
"unzip -a libpng-1.2.5-project-wince.zip"
"unzip -a libpng-1.0.51rc01-project-wince.zip"

253
scripts/CMakeLists.txt
View File

@ -1,253 +0,0 @@
project(PNG C)
cmake_minimum_required(VERSION 2.4.3)
# Copyright (C) 2007 Glenn Randers-Pehrson
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 0)
set(PNGLIB_RELEASE 50)
set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
# needed packages
find_package(ZLIB REQUIRED)
include_directories(${ZLIB_INCLUDE_DIR})
if(NOT WIN32)
find_library(M_LIBRARY
NAMES m
PATHS /usr/lib /usr/local/lib
)
if(NOT M_LIBRARY)
message(STATUS
"math library 'libm' not found - floating point support disabled")
endif()
else()
# not needed on windows
set(M_LIBRARY "")
endif()
# COMMAND LINE OPTIONS
if(DEFINED PNG_SHARED)
option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
else()
option(PNG_SHARED "Build shared lib" ON)
endif()
if(DEFINED PNG_STATIC)
option(PNG_STATIC "Build static lib" ${PNG_STATIC})
else()
option(PNG_STATIC "Build static lib" ON)
endif()
if(MINGW)
option(PNG_TESTS "Build pngtest" NO)
else(MINGW)
option(PNG_TESTS "Build pngtest" YES)
endif(MINGW)
option(PNG_NO_CONSOLE_IO "FIXME" YES)
option(PNG_NO_STDIO "FIXME" YES)
option(PNG_DEBUG "Build with debug output" NO)
option(PNGARG "FIXME" YES)
#TODO:
# PNG_CONSOLE_IO_SUPPORTED
# maybe needs improving, but currently I don't know when we can enable what :)
set(png_asm_tmp "OFF")
if(NOT WIN32)
find_program(uname_executable NAMES uname PATHS /bin /usr/bin /usr/local/bin)
if(uname_executable)
EXEC_PROGRAM(${uname_executable} ARGS --machine OUTPUT_VARIABLE uname_output)
if("uname_output" MATCHES "^.*i[1-9]86.*$")
set(png_asm_tmp "ON")
else("uname_output" MATCHES "^.*i[1-9]86.*$")
set(png_asm_tmp "OFF")
endif("uname_output" MATCHES "^.*i[1-9]86.*$")
endif(uname_executable)
else()
# this env var is normally only set on win64
SET(TEXT "ProgramFiles(x86)")
if("$ENV{${TEXT}}" STREQUAL "")
set(png_asm_tmp "ON")
endif("$ENV{${TEXT}}" STREQUAL "")
endif()
# SET LIBNAME
set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
# to distinguish between debug and release lib
set(CMAKE_DEBUG_POSTFIX "d")
# OUR SOURCES
set(libpng_sources
png.h
pngconf.h
png.c
pngerror.c
pngget.c
pngmem.c
pngpread.c
pngread.c
pngrio.c
pngrtran.c
pngrutil.c
pngset.c
pngtrans.c
pngwio.c
pngwrite.c
pngwtran.c
pngwutil.c
)
set(pngtest_sources
pngtest.c
)
# SOME NEEDED DEFINITIONS
if(MSVC)
add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
endif(MSVC)
if(PNG_SHARED OR NOT MSVC)
#if building msvc static this has NOT do be defined
add_definitions(-DZLIB_DLL)
endif()
add_definitions(-DLIBPNG_NO_MMX)
add_definitions(-DPNG_NO_MMX_CODE)
if(PNG_CONSOLE_IO_SUPPORTED)
add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
endif()
if(PNG_NO_CONSOLE_IO)
add_definitions(-DPNG_NO_CONSOLE_IO)
endif()
if(PNG_NO_STDIO)
add_definitions(-DPNG_NO_STDIO)
endif()
if(PNG_DEBUG)
add_definitions(-DPNG_DEBUG)
endif()
if(NOT M_LIBRARY AND NOT WIN32)
add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED)
endif()
# NOW BUILD OUR TARGET
include_directories(${PNG_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})
if(PNG_SHARED)
add_library(${PNG_LIB_NAME} SHARED ${libpng_sources})
if(MSVC)
# msvc does not append 'lib' - do it here to have consistent name
set_target_properties(${PNG_LIB_NAME} PROPERTIES PREFIX "lib")
endif()
target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY})
endif()
if(PNG_STATIC)
# does not work without changing name
set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static)
add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources})
if(MSVC)
# msvc does not append 'lib' - do it here to have consistent name
set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES PREFIX "lib")
endif()
endif()
if(PNG_SHARED AND WIN32)
set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
endif()
if(PNG_TESTS AND PNG_SHARED)
# does not work with msvc due to png_lib_ver issue
add_executable(pngtest ${pngtest_sources})
target_link_libraries(pngtest ${PNG_LIB_NAME})
# add_test(pngtest ${PNG_SOURCE_DIR}/pngtest.png)
endif()
# CREATE PKGCONFIG FILES
# we use the same files like ./configure, so we have to set its vars
set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix ${CMAKE_INSTALL_PREFIX})
set(libdir ${CMAKE_INSTALL_PREFIX}/lib)
set(includedir ${CMAKE_INSTALL_PREFIX}/include)
configure_file(${PNG_SOURCE_DIR}/scripts/libpng.pc.in
${PNG_BINARY_DIR}/libpng.pc)
configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
${PNG_BINARY_DIR}/libpng-config)
configure_file(${PNG_SOURCE_DIR}/scripts/libpng.pc.in
${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc)
configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
${PNG_BINARY_DIR}/${PNGLIB_NAME}-config)
# SET UP LINKS
if(PNG_SHARED)
set_target_properties(${PNG_LIB_NAME} PROPERTIES
# VERSION 0.${PNGLIB_RELEASE}.1.0.50
VERSION 0.${PNGLIB_RELEASE}.0
SOVERSION 0
CLEAN_DIRECT_OUTPUT 1)
endif()
if(PNG_STATIC)
if(NOT WIN32)
# that's uncool on win32 - it overwrites our static import lib...
set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
OUTPUT_NAME ${PNG_LIB_NAME}
CLEAN_DIRECT_OUTPUT 1)
endif()
endif()
# INSTALL
if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
if(PNG_SHARED)
install(TARGETS ${PNG_LIB_NAME}
RUNTIME DESTINATION bin
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib)
endif()
if(PNG_STATIC)
install(TARGETS ${PNG_LIB_NAME_STATIC}
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib)
endif()
endif()
if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
install(FILES png.h pngconf.h DESTINATION include)
install(FILES png.h pngconf.h DESTINATION include/${PNGLIB_NAME})
endif()
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
install(FILES libpng.3 libpngpf.3 DESTINATION man/man3)
install(FILES png.5 DESTINATION man/man5)
install(FILES ${PNG_BINARY_DIR}/libpng.pc DESTINATION lib/pkgconfig)
install(FILES ${PNG_BINARY_DIR}/libpng-config DESTINATION bin)
install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc DESTINATION lib/pkgconfig)
install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin)
endif()
# what's with libpng.txt and all the extra files?
# UNINSTALL
# do we need this?
# DIST
# do we need this?
# to create msvc import lib for mingw compiled shared lib
# pexports libpng.dll > libpng.def
# lib /def:libpng.def /machine:x86

76
scripts/README.txt Normal file
View File

@ -0,0 +1,76 @@
Makefiles for libpng version 1.0.51rc01 - November 18, 2009
makefile.linux => Linux/ELF makefile
(gcc, creates libpng10.so.0.1.0.51rc01)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
ftp://ftp.cs.wisc.edu/ghost)
makefile.acorn => Acorn makefile
makefile.aix => AIX/gcc makefile
makefile.amiga => Amiga makefile
makefile.atari => Atari makefile
makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
makefile.beos => beos makefile
makefile.bor => Borland makefile (uses bcc)
makefile.cegcc => minge32ce for Windows CE makefile
makefile.cygwin => Cygwin/gcc makefile
makefile.darwin => Darwin makefile, can use on MacosX
makefile.dec => DEC Alpha UNIX makefile
makefile.dj2 => DJGPP 2 makefile
makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng10.so.0.1.0.51rc01)
makefile.freebsd => FreeBSD makefile
makefile.gcc => Generic gcc makefile
makefile.gccmmx => Generic gcc makefile previously using MMX code
makefile.hpgcc => HPUX makefile using gcc
makefile.hpux => HPUX (10.20 and 11.00) makefile
makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64-bit
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.mingw => Mingw makefile
makefile.mips => MIPS makefile
makefile.msc => Microsoft C makefile
makefile.netbsd => NetBSD/cc makefile, makes libpng.so.
makefile.nommx => Generic gcc makefile not using MMX code
makefile.openbsd => OpenBSD makefile
makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.sggcc => Silicon Graphics (gcc,
creates libpng10.so.0.1.0.51rc01)
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.solaris => Solaris 2.X makefile (gcc,
creates libpng10.so.0.1.0.51rc01)
makefile.solaris-x86 => Solaris 2.X makefile (gcc, no MMX code,
creates libpng10.so.0.1.0.51rc01)
makefile.so9 => Solaris 9 makefile (gcc,
creates libpng10.so.0.1.0.51rc01)
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.sunos => Sun makefile
makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile
makefile.tc3 => Turbo C 3.0 makefile
makefile.vcawin32 => makefile for Microsoft Visual C++ 4.0 and later
previously using MMX code
makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and later
makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
makevms.com => VMS build script
smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
(Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
Other supporting scripts:
descrip.mms => VMS makefile for MMS or MMK
libpng-config.in => Used by "configure" to create libpng-config.
libpng-config-body.in => used by several makefiles to create libpng-config
libpng-config-head.in => used by several makefiles to create libpng-config
libpng.pc.in => Used by several makefiles to create libpng.pc
libpng.pc-configure.in => Used by "configure" to create libpng.pc
libpng.icc
pngos2.def => OS/2 module definition file used by makefile.os2
pngw32.def => Module definitions for makefile.cygwin and mingw
png32ce.def => Module definition file used by makefile.cegcc
pngw32.rc => Used by the visualc6 and visualc71 projects.
SCOPTIONS.ppc => Used with smakefile.ppc
Further information can be found in comments in the individual makefiles.

2
scripts/libpng-config-head.in
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@ -11,7 +11,7 @@
# Modeled after libxml-config.
version=1.0.50
version=1.0.51rc01
prefix=""
libdir=""
libs=""

2
scripts/libpng.pc.in
View File

@ -5,6 +5,6 @@ includedir=@includedir@/libpng10
Name: libpng
Description: Loads and saves PNG files
Version: 1.0.50
Version: 1.0.51rc01
Libs: -L${libdir} -lpng10
Cflags: -I${includedir}

4
scripts/makefile.32sunu
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@ -11,7 +11,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -49,7 +49,7 @@ ZLIBINC=/usr/include
WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
-Wmissing-declarations -Wtraditional -Wcast-align \
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) $(SUN_CC_FLAGS) \
# $(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=$(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) libpng.a -lz -lm

4
scripts/makefile.64sunu
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@ -11,7 +11,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -49,7 +49,7 @@ ZLIBINC=/usr/include
WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
-Wmissing-declarations -Wtraditional -Wcast-align \
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) $(SUN_CC_FLAGS) \
# $(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm

2
scripts/makefile.acorn
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@ -2,7 +2,7 @@
# Toolflags:
CCflags = -c -depend !Depend -IC:,Zlib: -g -throwback -DRISCOS -fnah
CCflags = -DPNG_CONFIGURE_LIBPNG -c -depend !Depend -IC:,Zlib: -g -throwback -DRISCOS -fnah
C++flags = -c -depend !Depend -IC: -throwback
Linkflags = -aif -c++ -o $@
ObjAsmflags = -throwback -NoCache -depend !Depend

6
scripts/makefile.aix
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@ -3,7 +3,7 @@
# Copyright (C) 2000 Cosmin Truta
# Copyright (C) 2000 Marc O. Gloor (AIX support added, from makefile.gcc)
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -23,7 +23,7 @@ LN_SF = ln -f -s
LIBNAME=libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local
@ -48,7 +48,7 @@ LDDEBUG =
CRELEASE = -O2
LDRELEASE = -s
WARNMORE=-W -Wall
CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
CFLAGS = -DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
LDFLAGS = -L. -L$(ZLIBLIB) -lpng10 -lz -lm $(LDRELEASE)
# File extensions

4
scripts/makefile.amiga
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@ -1,7 +1,7 @@
# Commodore Amiga Makefile
# makefile for libpng and SAS C V6.5x compiler
# Copyright (C) 1995-2000 Wolf Faust
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -15,7 +15,7 @@ CC=sc
#compiler flags
# WARNING: a bug in V6.51 causes bad code with OPTGO
# So use V6.55 or set NOOPTGO!!!!!!!!!
CFLAGS= NOSTKCHK PARMS=REG OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL\
CFLAGS= -DPNG_CONFIGURE_LIBPNG NOSTKCHK PARMS=REG OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL\
OPTLOOP OPTRDEP=4 OPTDEP=4 OPTCOMP=4 INCLUDEDIR=$(ZLIB) \
DEFINE=PNG_INTERNAL
#linker flags

6
scripts/makefile.atari
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@ -1,15 +1,15 @@
# makefile for libpng
# Copyright (C) 2002 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
#
# Modified for LC56/ATARI assumes libz.lib is in same dir and uses default
# rules for library management
#
CFLAGS=-I..\zlib -O
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I..\zlib -O
LBR = png.lib
LDFLAGS=-lpng -lz -lm

2
scripts/makefile.bc32
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@ -43,7 +43,7 @@ LDEBUG=$(LDEBUG) -N
# -d merge duplicate strings
# -k- turn off standard stack frame
# -w display all warnings
CFLAGS=-I$(ZLIB_DIR) -O2 -d -k- -w $(TARGET_CPU) $(CDEBUG)
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIB_DIR) -O2 -d -k- -w $(TARGET_CPU) $(CDEBUG)
# -M generate map file
LDFLAGS=-L$(ZLIB_DIR) -M $(LDEBUG)

6
scripts/makefile.beos
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@ -3,7 +3,7 @@
# Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson
# Copyright (C) 1999 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -11,7 +11,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -44,7 +44,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
# On BeOS, -O1 is actually better than -O3. This is a known bug but it's
# still here in R4.5
CFLAGS=-I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
# LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz

4
scripts/makefile.bor
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@ -51,7 +51,7 @@ LDEBUG=$(LDEBUG) -N
# -w set all warnings on
# -O2 optimize for speed
# -Z global optimization
CFLAGS=-O2 -Z -X- -w -I$(ZLIB_DIR) -$(TARGET_CPU) $(MODEL_ARG) $(CDEBUG)
CFLAGS=-DPNG_CONFIGURE_LIBPNG -O2 -Z -X- -w -I$(ZLIB_DIR) -$(TARGET_CPU) $(MODEL_ARG) $(CDEBUG)
# -M generate map file
LDFLAGS=-M -L$(ZLIB_DIR) $(MODEL_ARG) $(LDEBUG)
@ -139,7 +139,7 @@ $(LIBNAME): $(OBJS)
$(LIBOBJS), libpng$(MODEL)
|
pngtest$(MODEL).obj: pngtest.c
pngtest$(MODEL).obj: pngtest.c png.h pngconf.h
$(CC) $(CFLAGS) -opngtest$(MODEL) -c pngtest.c
pngtest$(MODEL).exe: pngtest$(MODEL).obj

113
scripts/makefile.cegcc Normal file
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@ -0,0 +1,113 @@
# Makefile for creating Windows CE release archives, with the
# mingw32ce compiler.
# Last updated: 22-Jul-2008
# Copyright (C) 2008 Vincent Torri
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
# To get some help, type
#
# make help
#
# To create the archives
#
# make
#
# To remove everything, type:
#
# make clean
VERMAJ = 1
VERMIN = 0
VERMIC = 51
VER = $(VERMAJ).$(VERMIN).$(VERMIC)
NAME = libpng
PACKAGE = $(NAME)-$(VER)
BIN = libpng10-0.dll libpng-2.dll
LIB = libpng10.a libpng10.dll.a libpng.a libpng.dll.a scripts/png32ce.def
INCLUDE = png.h pngconf.h
PC = libpng10.pc libpng.pc
MANIFESTVERBIN = "Libpng-$(VER): Binary files"
MANIFESTVERDEV = "Libpng-$(VER): Developer files"
MANIFESTVERDESC = "Libpng: the official PNG reference library"
all: $(NAME)
$(NAME): remove-old copy-src compilation copy manifest archive
@echo " * Removal of the directories"
@rm -rf $(PACKAGE)/ $(PACKAGE)-bin/ $(PACKAGE)-dev/
remove-old:
@echo " * Removal of the old files"
@rm -rf $(PACKAGE)-bin*
@rm -rf $(PACKAGE)-dev*
copy-src:
@echo " * Copy of source files"
@cp -R ../src/$(PACKAGE) .
@echo " * Creation of directories and files"
@mkdir -p $(PACKAGE)-bin/bin
@mkdir -p $(PACKAGE)-bin/manifest
@mkdir -p $(PACKAGE)-dev/lib/pkgconfig
@mkdir -p $(PACKAGE)-dev/include/$(NAME)$(VERMAJ)$(VERMIN)
@mkdir -p $(PACKAGE)-dev/manifest
@touch $(PACKAGE)-bin/manifest/$(PACKAGE)-bin.mft
@touch $(PACKAGE)-bin/manifest/$(PACKAGE)-bin.ver
@touch $(PACKAGE)-dev/manifest/$(PACKAGE)-dev.mft
@touch $(PACKAGE)-dev/manifest/$(PACKAGE)-dev.ver
compilation:
@echo " * Compilation of $(PACKAGE)"
cd $(PACKAGE) && CPPFLAGS="$(CPPFLAGS) -DPNG_BUILD_DLL -DPNG_CONSOLE_IO_SUPPORTED -DPNG_NO_MMX_CODE -D_WIN32_WCE=0x0420" CFLAGS="$(CFLAGS) -DPNG_CONFIGURE_LIBPNG -mms-bitfields -O3 -pipe -fomit-frame-pointer" LDFLAGS="$(LDFLAGS) -Wl,--enable-auto-import -Wl,-s" ./configure --prefix=/opt/wince --host=arm-mingw32ce && make
copy:
@echo " * Copy of binary and development files"
@for i in $(BIN); do \
cp $(PACKAGE)/.libs/$$i $(PACKAGE)-bin/bin; \
done
@for i in $(LIB); do \
cp $(PACKAGE)/.libs/$$i $(PACKAGE)-dev/lib; \
done
@for i in $(INCLUDE); do \
cp $(PACKAGE)/$$i $(PACKAGE)-dev/include/$(NAME)$(VERMAJ)$(VERMIN); \
done
@for i in $(PC); do \
cp $(PACKAGE)/$$i $(PACKAGE)-dev/lib/pkgconfig; \
done
manifest:
@echo " * Creation of the manifest"
@cd $(PACKAGE)-bin && find * >> manifest/$(PACKAGE)-bin.mft
@cd $(PACKAGE)-bin && \
echo $(MANIFESTVERBIN) >> manifest/$(PACKAGE)-bin.ver && \
echo $(MANIFESTVERDESC) >> manifest/$(PACKAGE)-bin.ver
@cd $(PACKAGE)-dev && find * >> manifest/$(PACKAGE)-dev.mft
@cd $(PACKAGE)-dev && \
echo $(MANIFESTVERDEV) >> manifest/$(PACKAGE)-dev.ver && \
echo $(MANIFESTVERDESC) >> manifest/$(PACKAGE)-dev.ver
archive:
@echo " * Creation of the archives"
@tar cf $(PACKAGE)-bin.tar $(PACKAGE)-bin
@bzip2 -9 $(PACKAGE)-bin.tar
@tar cf $(PACKAGE)-dev.tar $(PACKAGE)-dev
@bzip2 -9 $(PACKAGE)-dev.tar
clean:
@echo " * Cleaning"
@rm -rf $(PACKAGE)*
help:
@echo
@echo "To create the archives, type:"
@echo " make"
@echo
@echo "To remove everything, type:"
@echo " make clean"
@echo

6
scripts/makefile.cygwin
View File

@ -7,7 +7,7 @@
# and Glenn Randers-Pehrson, based on makefile for linux-elf w/mmx by:
# Copyright (C) 1998-2000 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -36,7 +36,7 @@ DESTDIR=
CC=gcc
ifdef MINGW
MINGW_CCFLAGS=-mno-cygwin -I/usr/include/mingw
MINGW_CCFLAGS=-DPNG_CONFIGURE_LIBPNG -mno-cygwin -I/usr/include/mingw
MINGW_LDFLAGS=-mno-cygwin -L/usr/lib/mingw
endif
@ -77,7 +77,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
LIBNAME = libpng10
PNGMAJ = 0
CYGDLL = 10
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=cygpng$(CYGDLL).dll

8
scripts/makefile.darwin
View File

@ -4,7 +4,7 @@
# derived from makefile.linux:
# Copyright (C) 1998, 1999 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -22,7 +22,7 @@ ZLIBINC=../zlib
# Library name:
LIBNAME = libpng10
PNGMAJ = 10
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -41,8 +41,8 @@ LN_SF=ln -sf
RANLIB=ranlib
RM_F=/bin/rm -f
# CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE
CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops
# CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O -funroll-loops
LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz
INCPATH=$(prefix)/include

6
scripts/makefile.dec
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@ -1,14 +1,14 @@
# makefile for libpng on DEC Alpha Unix
# Copyright (C) 2000-2002, 2006 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
# Library name:
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng10
@ -57,7 +57,7 @@ DM=$(DESTDIR)$(MANPATH)
ZLIBLIB=../zlib
ZLIBINC=../zlib
CFLAGS=-std -w1 -I$(ZLIBINC) -O # -g -DPNG_DEBUG=1
CFLAGS=-DPNG_CONFIGURE_LIBPNG -std -w1 -I$(ZLIBINC) -O # -g -DPNG_DEBUG=1
LDFLAGS=-L$(ZLIBLIB) -rpath $(ZLIBLIB) libpng.a -lz -lm
OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \

4
scripts/makefile.dj2
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@ -1,7 +1,7 @@
# DJGPP (DOS gcc) makefile for libpng
# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -13,7 +13,7 @@ INCPATH=$(prefix)/include
LIBPATH=$(prefix)/lib
CC=gcc
CFLAGS=-I../zlib -O
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I../zlib -O
LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
RANLIB=ranlib

6
scripts/makefile.elf
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@ -2,7 +2,7 @@
# Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs
# and Glenn Randers-Pehrson
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -16,7 +16,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -57,7 +57,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
# for pgcc version 2.95.1, -O3 is buggy; don't use it.
CFLAGS=-W -Wall -D_REENTRANT -O2 \
CFLAGS=-DPNG_CONFIGURE_LIBPNG -W -Wall -D_REENTRANT -O2 \
$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=-L. -lpng10

6
scripts/makefile.freebsd
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@ -1,6 +1,6 @@
# makefile for libpng under FreeBSD
# Copyright (C) 2002, 2007, 2009 Glenn Randers-Pehrson and Andrey A. Chernov
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -27,9 +27,9 @@ SYMLINKS= libpng/png.h ${INCSDIR}/../png.h \
LDADD+= -lm -lz
DPADD+= ${LIBM} ${LIBZ}
CFLAGS+= -I.
CFLAGS+= -DPNG_CONFIGURE_LIBPNG -I.
.if (${MACHINE_ARCH} != "i386")
CFLAGS+= -DPNG_NO_MMX_CODE
CFLAGS+= -DPNG_CONFIGURE_LIBPNG -DPNG_NO_MMX_CODE
.endif
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \

6
scripts/makefile.gcc
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@ -2,7 +2,7 @@
# Copyright (C) 2008 Glenn Randers-Pehrson
# Copyright (C) 2000 Cosmin Truta
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -22,8 +22,8 @@ CDEBUG = -g -DPNG_DEBUG=5
LDDEBUG =
CRELEASE = -O2
LDRELEASE = -s
#CFLAGS = -W -Wall $(CDEBUG)
CFLAGS = -W -Wall $(CRELEASE)
#CFLAGS = -DPNG_CONFIGURE_LIBPNG -W -Wall $(CDEBUG)
CFLAGS = -DPNG_CONFIGURE_LIBPNG -W -Wall $(CRELEASE)
#LDFLAGS = $(LDDEBUG)
LDFLAGS = $(LDRELEASE)
LIBS = -lz -lm

2
scripts/makefile.gcmmx
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@ -17,7 +17,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

10
scripts/makefile.hp64
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@ -2,7 +2,7 @@
# Copyright (C) 1999-2002, 2006, 2009 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42
# contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -14,14 +14,14 @@ ZLIBINC=/opt/zlib/include
# Note that if you plan to build a libpng shared library, zlib must also
# be a shared library, which zlib's configure does not do. After running
# zlib's configure, edit the appropriate lines of makefile to read:
# CFLAGS=-O1 -DHAVE_UNISTD -DUSE_MAP -fPIC \
# CFLAGS=-DPNG_CONFIGURE_LIBPNG -O1 -DHAVE_UNISTD -DUSE_MAP -fPIC \
# LDSHARED=ld -b
# SHAREDLIB=libz.sl
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -40,10 +40,10 @@ LN_SF=ln -sf
RANLIB=ranlib
RM_F=/bin/rm -f
CFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 +Z -DHAVE_UNISTD_H -DUSE_MMAP
# Caution: be sure you have built zlib with the same CFLAGS.
CCFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
CCFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 +Z -DHAVE_UNISTD_H -DUSE_MMAP
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm

6
scripts/makefile.hpgcc
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@ -3,7 +3,7 @@
# Copyright (C) 2001, Laurent faillie
# Copyright (C) 1998, 1999 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -11,7 +11,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -56,7 +56,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
# for pgcc version 2.95.1, -O3 is buggy; don't use it.
CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz -lm

8
scripts/makefile.hpux
View File

@ -2,7 +2,7 @@
# Copyright (C) 1999-2002, 2006 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42
# contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -21,7 +21,7 @@ ZLIBINC=/opt/zlib/include
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -48,9 +48,9 @@ LIBPATH=$(exec_prefix)/lib
MANPATH=$(prefix)/man
BINPATH=$(exec_prefix)/bin
CFLAGS=-I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0 -DPNG_NO_MMX_CODE
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0 -DPNG_NO_MMX_CODE
# Caution: be sure you have built zlib with the same CFLAGS.
CCFLAGS=-I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0
CCFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
# override DESTDIR= on the make install command line to easily support

6
scripts/makefile.ibmc
View File

@ -2,11 +2,11 @@
# IBM C version 3.x for Win32 and OS/2
# Copyright (C) 2006 Glenn Randers-Pehrson
# Copyright (C) 2000 Cosmin Truta
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
#
# Notes:
# Derived from makefile.std
# All modules are compiled in C mode
@ -23,7 +23,7 @@ LD = ilink
AR = ilib
RM = del
CFLAGS = -I$(ZLIBINC) -Mc -O2 -W3
CFLAGS = -DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -Mc -O2 -W3
LDFLAGS =
# File extensions

8
scripts/makefile.intel
View File

@ -4,13 +4,13 @@
# Copyright (C) 2006 Glenn Randers-Pehrson
# Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is
# copyright 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
#
# To use, do "nmake /f scripts\makefile.intel"
#
# ------------------- Intel C/C++ Compiler 4.0 and later -------------------
# Where the zlib library and include files are located
@ -32,7 +32,7 @@ CALLING=r # __fastcall
# --------------------------------------------------------------------------
CC=icl -c
CFLAGS=-O2 -G$(CPU)$(CALLING) -Qip -Qunroll4 -I$(ZLIBINC) -nologo
CFLAGS=-DPNG_CONFIGURE_LIBPNG -O2 -G$(CPU)$(CALLING) -Qip -Qunroll4 -I$(ZLIBINC) -nologo
LD=link
LDFLAGS=/SUBSYSTEM:CONSOLE /NOLOGO

6
scripts/makefile.knr
View File

@ -1,11 +1,11 @@
# makefile for libpng
# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
#
# This makefile requires the file ansi2knr.c, which you can get
# from the Ghostscript ftp site at ftp://ftp.cs.wisc.edu/ghost/
# If you have libjpeg, you probably already have ansi2knr.c in the jpeg
@ -27,7 +27,7 @@ LIBPATH=$(prefix)/lib
DESTDIR=
CC=cc
CFLAGS=-I../zlib -O
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I../zlib -O
LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
# flags for ansi2knr
ANSI2KNRFLAGS=

6
scripts/makefile.linux
View File

@ -2,7 +2,7 @@
# Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs and
# Glenn Randers-Pehrson
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -10,7 +10,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -51,7 +51,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
# for pgcc version 2.95.1, -O3 is buggy; don't use it.
CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm

10
scripts/makefile.mingw
View File

@ -7,7 +7,7 @@
# and Glenn Randers-Pehrson, based on makefile for linux-elf w/mmx by:
# Copyright (C) 1998-2000, 2007 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -62,22 +62,22 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
### if you don't need thread safety, but want the asm accel
#CFLAGS= $(strip $(MINGW_CCFLAGS) -DPNG_THREAD_UNSAFE_OK \
#CFLAGS= -DPNG_CONFIGURE_LIBPNG $(strip $(MINGW_CCFLAGS) -DPNG_THREAD_UNSAFE_OK \
# $(addprefix -I,$(ZLIBINC)) -W -Wall -O $(ALIGN) -funroll-loops \
# -fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
### if you need thread safety and want (minimal) asm accel
#CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
#CFLAGS= -DPNG_CONFIGURE_LIBPNG $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
# -W -Wall -O $(ALIGN) -funroll-loops \
# -fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
### Normal (non-asm) compilation
CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
CFLAGS= -DPNG_CONFIGURE_LIBPNG $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
-W -Wall -O3 $(ALIGN) -funroll-loops -DPNG_NO_MMX_CODE \
-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
LIBNAME = libpng10
PNGMAJ = 0
MINGDLL = 10
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=libpng$(MINGDLL).dll

6
scripts/makefile.mips
View File

@ -1,7 +1,7 @@
# makefile for libpng
# Copyright (C) Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -22,8 +22,8 @@ LIBPATH=$(prefix)/lib
DESTDIR=
CC=cc
CFLAGS=-I../zlib -O -systype sysv -DSYSV -w -Dmips
#CFLAGS=-O
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I../zlib -O -systype sysv -DSYSV -w -Dmips
#CFLAGS=-DPNG_CONFIGURE_LIBPNG -O
LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
#RANLIB=ranlib

6
scripts/makefile.msc
View File

@ -1,16 +1,16 @@
# makefile for libpng
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
# Copyright (C) 2006, 2009 Glenn Randers-Pehrson
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
#
# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
# -------- Microsoft C 5.1 and later, does not use assembler code --------
MODEL=L
CFLAGS=-Oait -Gs -nologo -W3 -A$(MODEL) -I..\zlib
CFLAGS=-DPNG_CONFIGURE_LIBPNG -Oait -Gs -nologo -W3 -A$(MODEL) -I..\zlib
#-Ox generates bad code with MSC 5.1
CC=cl
LD=link

8
scripts/makefile.ne12bsd
View File

@ -3,7 +3,7 @@
# make includes && make install
# Copyright (C) 2002 Patrick R.L. Welche
# Copyright (C) 2007, 2009 Glenn Randers-Pehrson
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng10
LIB= png10
SHLIB_MAJOR= 0
SHLIB_MINOR= 1.0.50
SHLIB_MINOR= 1.0.51rc01
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c
@ -29,10 +29,10 @@ CPPFLAGS+=-I${.CURDIR}
# We should be able to do something like this instead of the manual
# uncommenting, but it core dumps for me at the moment:
# .if ${MACHINE_ARCH} == "i386"
# CPPFLAGS+=-DPNG_THREAD_UNSAFE_OK
# CPPFLAGS+=-DPNG_CONFIGURE_LIBPNG -DPNG_THREAD_UNSAFE_OK
# MKLINT= no
# .else
CPPFLAGS+=-DPNG_NO_MMX_CODE
CPPFLAGS+=-DPNG_CONFIGURE_LIBPNG -DPNG_NO_MMX_CODE
# .endif
CLEANFILES+=pngtest.o pngtest

8
scripts/makefile.netbsd
View File

@ -3,7 +3,7 @@
# make includes && make install
# Copyright (C) 2002 Patrick R.L. Welche
# Copyright (C) 2007, 2009 Glenn Randers-Pehrson
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng
LIB= png
SHLIB_MAJOR= 3
SHLIB_MINOR= 1.0.50
SHLIB_MINOR= 1.0.51rc01
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c
@ -29,10 +29,10 @@ CPPFLAGS+=-I${.CURDIR}
# We should be able to do something like this instead of the manual
# uncommenting, but it core dumps for me at the moment:
# .if ${MACHINE_ARCH} == "i386"
# CPPFLAGS+=-DPNG_THREAD_UNSAFE_OK
# CPPFLAGS+=-DPNG_CONFIGURE_LIBPNG -DPNG_THREAD_UNSAFE_OK
# MKLINT= no
# .else
CPPFLAGS+=-DPNG_NO_MMX_CODE
CPPFLAGS+=-DPNG_CONFIGURE_LIBPNG -DPNG_NO_MMX_CODE
# .endif
CLEANFILES+=pngtest.o pngtest

6
scripts/makefile.nommx
View File

@ -2,7 +2,7 @@
# Copyright (C) 1998, 1999, 2002, 2006-2008 Greg Roelofs and
# Glenn Randers-Pehrson
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -10,7 +10,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -51,7 +51,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
# for pgcc version 2.95.1, -O3 is buggy; don't use it.
CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm

6
scripts/makefile.openbsd
View File

@ -1,7 +1,7 @@
# makefile for libpng
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
# Copyright (C) 2007-2008 Glenn Randers-Pehrson
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -11,7 +11,7 @@ LIBDIR= ${PREFIX}/lib
MANDIR= ${PREFIX}/man/cat
SHLIB_MAJOR= 0
SHLIB_MINOR= 1.0.50
SHLIB_MINOR= 1.0.51rc01
LIB= png
SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \
@ -20,7 +20,7 @@ SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \
HDRS= png.h pngconf.h
CFLAGS+= -W -Wall
CFLAGS+= -DPNG_CONFIGURE_LIBPNG -W -Wall
CPPFLAGS+= -I${.CURDIR} -DPNG_NO_MMX_CODE
NOPROFILE= Yes

4
scripts/makefile.os2
View File

@ -1,5 +1,5 @@
# makefile for libpng on OS/2 with gcc
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -15,7 +15,7 @@ ZLIBINC=../zlib
WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
-Wmissing-declarations -Wtraditional -Wcast-align \
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
CFLAGS=-I$(ZLIBINC) -W -Wall -O6 -funroll-loops -malign-loops=2 \
CFLAGS=--DPNG_CONFIGURE_LIBPNG I$(ZLIBINC) -W -Wall -O6 -funroll-loops -malign-loops=2 \
-malign-functions=2 #$(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lzdll -Zcrtdll
AR=emxomfar

6
scripts/makefile.sco
View File

@ -4,7 +4,7 @@
# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
# Copyright (C) 1998 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -12,7 +12,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -41,7 +41,7 @@ exec_prefix=$(prefix)
ZLIBLIB=../zlib
ZLIBINC=../zlib
CFLAGS= -dy -belf -I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
CFLAGS= -DPNG_CONFIGURE_LIBPNG -dy -belf -I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz -lm
INCPATH=$(prefix)/include/libpng

6
scripts/makefile.sggcc
View File

@ -1,7 +1,7 @@
# makefile for libpng.a and libpng10.so, SGI IRIX with 'cc'
# Copyright (C) 2001-2002, 2006 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -9,7 +9,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -47,7 +47,7 @@ ZLIBINC=../zlib
ABI=
WARNMORE= # -g -DPNG_DEBUG=5
CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -fPIC -mabi=n32 -DPNG_NO_MMX_CODE
CFLAGS=-DPNG_CONFIGURE_LIBPNG $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -fPIC -mabi=n32 -DPNG_NO_MMX_CODE
LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
-set_version sgi$(PNGMAJ).0

8
scripts/makefile.sgi
View File

@ -1,7 +1,7 @@
# makefile for libpng.a and libpng10.so, SGI IRIX with 'cc'
# Copyright (C) 2001-2002, 2006, 2007 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -9,7 +9,7 @@
# Library name:
LIBNAME=libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -48,8 +48,8 @@ ABI=
WARNMORE=-fullwarn
# Note: -KPIC is the default anyhow
#CFLAGS= $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC -DPNG_NO_MMX_CODE # -g -DPNG_DEBUG=5
CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -DPNG_NO_MMX_CODE
#CFLAGS= -DPNG_CONFIGURE_LIBPNG $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC -DPNG_NO_MMX_CODE # -g -DPNG_DEBUG=5
CFLAGS=-DPNG_CONFIGURE_LIBPNG $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -DPNG_NO_MMX_CODE
LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng10 -lz -lm
LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \

8
scripts/makefile.so9
View File

@ -4,14 +4,14 @@
# Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson
# Copyright (C) 1998-2001 Greg Roelofs
# Copyright (C) 1996-1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
# Library name:
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng10
@ -50,8 +50,8 @@ ZLIBINC=/usr/include
#WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
-Wmissing-declarations -Wtraditional -Wcast-align \
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
#CFLAGS=-I$(ZLIBINC) -W -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5 -DPNG_NO_MMX_CODE
CFLAGS=-I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
#CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5 -DPNG_NO_MMX_CODE
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
INCPATH=$(prefix)/include

6
scripts/makefile.solaris
View File

@ -3,7 +3,7 @@
# Contributed by William L. Sebok, based on makefile.linux
# Copyright (C) 1998 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -11,7 +11,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:
@ -46,7 +46,7 @@ ZLIBINC=/usr/local/include
WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
-Wmissing-declarations -Wtraditional -Wcast-align \
-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
CFLAGS=-I$(ZLIBINC) -W -Wall -O -DPNG_NO_MMX_CODE; \
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O -DPNG_NO_MMX_CODE; \
# $(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm

2
scripts/makefile.solaris-x86
View File

@ -11,7 +11,7 @@
# Library name:
LIBNAME = libpng10
PNGMAJ = 0
PNGMIN = 1.0.50
PNGMIN = 1.0.51rc01
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

4
scripts/makefile.std
View File

@ -1,7 +1,7 @@
# makefile for libpng
# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -34,7 +34,7 @@ LN_SF=ln -sf
RANLIB=ranlib
RM_F=rm -f
CFLAGS=-I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \

4
scripts/makefile.sunos
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@ -1,7 +1,7 @@
# makefile for libpng
# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -39,7 +39,7 @@ LN_SF=ln -f -s
RANLIB=ranlib
RM_F=/bin/rm -f
CFLAGS=-I$(ZLIBINC) -O # $(WARNMORE) -DPNG_DEBUG=5
CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -O # $(WARNMORE) -DPNG_DEBUG=5
LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \

4
scripts/makefile.tc3
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@ -6,8 +6,8 @@
# ----- Turbo C 3.00 (can be modified to work with earlier versions) -----
MODEL=l
CFLAGS=-O2 -Z -m$(MODEL) -I..\zlib
#CFLAGS=-D_NO_PROTO -O2 -Z -m$(MODEL) -I..\zlib # Turbo C older than 3.00
CFLAGS=-DPNG_CONFIGURE_LIBPNG -O2 -Z -m$(MODEL) -I..\zlib
#CFLAGS=-DPNG_CONFIGURE_LIBPNG -D_NO_PROTO -O2 -Z -m$(MODEL) -I..\zlib # Turbo C older than 3.00
CC=tcc
LD=tcc
LIB=tlib

6
scripts/makefile.vcawin32
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@ -1,11 +1,11 @@
# makefile for libpng
# Copyright (C) 2006,2009 Glenn Randers-Pehrson
# Copyright (C) 1998 Tim Wegner
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
#
# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
# To use, do "nmake /f scripts\makefile.vcawin32"
@ -16,7 +16,7 @@
CC = cl
LD = link
AR = lib
CFLAGS = -nologo -DPNG_USE_PNGVCRD -MD -O2 -W3 -I..\zlib
CFLAGS = -DPNG_CONFIGURE_LIBPNG -nologo -DPNG_USE_PNGVCRD -MD -O2 -W3 -I..\zlib
LDFLAGS = -nologo
ARFLAGS = -nologo
RM = del

6
scripts/makefile.vcwin32
View File

@ -1,11 +1,11 @@
# makefile for libpng
# Copyright (C) 1998 Tim Wegner
# Copyright (C) 2006,2009 Glenn Randers-Pehrson
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
#
# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
# To use, do "nmake /f scripts\makefile.vcwin32"
@ -16,7 +16,7 @@
CC = cl
LD = link
AR = lib
CFLAGS = -nologo -DPNG_NO_MMX_CODE -MD -O2 -W3 -I..\zlib
CFLAGS = -DPNG_CONFIGURE_LIBPNG -nologo -DPNG_NO_MMX_CODE -MD -O2 -W3 -I..\zlib
LDFLAGS = -nologo
ARFLAGS = -nologo
RM = del

4
scripts/makefile.watcom
View File

@ -3,7 +3,7 @@
# Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is
# copyright 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
@ -36,7 +36,7 @@ CALLING=r # registers
CC=wcc386
CFLAGS=-$(CPU)$(CALLING) -fp$(CPU) -fpi87 -oneatx -mf -bt=$(OS) -i=$(ZLIBINC) -zq
CFLAGS=-DPNG_CONFIGURE_LIBPNG -$(CPU)$(CALLING) -fp$(CPU) -fpi87 -oneatx -mf -bt=$(OS) -i=$(ZLIBINC) -zq
LD=wcl386
LDFLAGS=-zq

236
scripts/png32ce.def Normal file
View File

@ -0,0 +1,236 @@
;------------------------------------------
; LIBPNG module definition file for Windows
;------------------------------------------
LIBRARY lpngce
EXPORTS
;Version 1.0.51rc01
png_build_grayscale_palette @1
png_check_sig @2
png_chunk_error @3
png_chunk_warning @4
; png_convert_from_struct_tm @5
; png_convert_from_time_t @6
png_create_info_struct @7
png_create_read_struct @8
png_create_write_struct @9
png_data_freer @10
png_destroy_info_struct @11
png_destroy_read_struct @12
png_destroy_write_struct @13
png_error @14
png_free @15
png_free_data @16
png_get_IHDR @17
png_get_PLTE @18
png_get_bKGD @19
png_get_bit_depth @20
png_get_cHRM @21
png_get_cHRM_fixed @22
png_get_channels @23
png_get_color_type @24
png_get_compression_buffer_size @25
png_get_compression_type @26
png_get_copyright @27
png_get_error_ptr @28
png_get_filter_type @29
png_get_gAMA @30
png_get_gAMA_fixed @31
png_get_hIST @32
png_get_header_ver @33
png_get_header_version @34
png_get_iCCP @35
png_get_image_height @36
png_get_image_width @37
png_get_interlace_type @38
png_get_libpng_ver @40
png_get_oFFs @41
png_get_pCAL @42
png_get_pHYs @43
png_get_pixel_aspect_ratio @44
png_get_pixels_per_meter @45
png_get_progressive_ptr @46
png_get_rgb_to_gray_status @47
png_get_rowbytes @48
png_get_rows @49
png_get_sBIT @50
png_get_sCAL @51
png_get_sPLT @52
png_get_sRGB @53
png_get_signature @54
png_get_tIME @55
png_get_tRNS @56
png_get_text @57
png_get_unknown_chunks @58
png_get_user_chunk_ptr @59
png_get_user_transform_ptr @60
png_get_valid @61
png_get_x_offset_microns @62
png_get_x_offset_pixels @63
png_get_x_pixels_per_meter @64
png_get_y_offset_microns @65
png_get_y_offset_pixels @66
png_get_y_pixels_per_meter @67
png_malloc @68
png_memcpy_check @69
png_memset_check @70
png_permit_empty_plte @71
png_process_data @72
png_progressive_combine_row @73
png_read_end @74
png_read_image @75
png_read_info @76
; png_read_init is deprecated
png_read_init @77
png_read_png @78
png_read_row @79
png_read_rows @80
png_read_update_info @81
png_reset_zstream @82
png_set_IHDR @83
png_set_PLTE @84
png_set_bKGD @85
png_set_background @86
png_set_bgr @87
png_set_cHRM @88
png_set_cHRM_fixed @89
png_set_compression_buffer_size @90
png_set_compression_level @91
png_set_compression_mem_level @92
png_set_compression_method @93
png_set_compression_strategy @94
png_set_compression_window_bits @95
png_set_crc_action @96
png_set_dither @97
png_set_error_fn @98
png_set_expand @99
png_set_filler @100
png_set_filter @101
png_set_filter_heuristics @102
png_set_flush @103
png_set_gAMA @104
png_set_gAMA_fixed @105
png_set_gamma @106
png_set_gray_1_2_4_to_8 @107 ; deprecated
png_set_gray_to_rgb @108
png_set_hIST @109
png_set_iCCP @110
png_set_interlace_handling @111
png_set_invert_alpha @112
png_set_invert_mono @113
png_set_keep_unknown_chunks @114
png_set_oFFs @115
png_set_pCAL @116
png_set_pHYs @117
png_set_packing @118
png_set_packswap @119
png_set_palette_to_rgb @120
png_set_progressive_read_fn @121
png_set_read_fn @122
png_set_read_status_fn @123
png_set_read_user_chunk_fn @124
png_set_read_user_transform_fn @125
png_set_rgb_to_gray @126
png_set_rgb_to_gray_fixed @127
png_set_rows @128
png_set_sBIT @129
png_set_sCAL @130
png_set_sPLT @131
png_set_sRGB @132
png_set_sRGB_gAMA_and_cHRM @133
png_set_shift @134
png_set_sig_bytes @135
png_set_strip_16 @136
png_set_strip_alpha @137
png_set_swap @138
png_set_swap_alpha @139
png_set_tIME @140
png_set_tRNS @141
png_set_tRNS_to_alpha @142
png_set_text @143
png_set_unknown_chunk_location @144
png_set_unknown_chunks @145
png_set_user_transform_info @146
png_set_write_fn @147
png_set_write_status_fn @148
png_set_write_user_transform_fn @149
png_sig_cmp @150
png_start_read_image @151
png_warning @152
png_write_chunk @153
png_write_chunk_data @154
png_write_chunk_end @155
png_write_chunk_start @156
png_write_end @157
png_write_flush @158
png_write_image @159
png_write_info @160
png_write_info_before_PLTE @161
; png_write_init is deprecated
png_write_init @162
png_write_png @163
png_write_row @164
png_write_rows @165
; png_read_init_2 and png_write_init_2 are deprecated.
png_read_init_2 @166
png_write_init_2 @167
png_access_version_number @168
; png_sig_bytes @169
; png_libpng_ver @170
png_init_io @171
png_convert_to_rfc1123 @172
png_set_invalid @173
; Added at version 1.0.12
; For compatiblity with 1.0.7-1.0.11
png_info_init @174
png_read_init_3 @175
png_write_init_3 @176
png_info_init_3 @177
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 @179
png_zalloc @180
png_zfree @181
; png_handle_as_unknown @194
; png_zalloc @195
; png_zfree @196
; Added at version 1.2.6
png_malloc_warn @195
png_get_user_height_max @196
png_get_user_width_max @197
png_set_user_limits @198
; Added at version 1.2.7
png_set_add_alpha @199
; Added at version 1.2.9
png_get_uint_32 @200
png_save_uint_32 @201
png_get_uint_16 @202
png_save_uint_16 @203
png_get_int_32 @204
png_save_int_32 @205
png_get_uint_31 @206
png_set_expand_gray_1_2_4_to_8 @207
; Added at version 1.2.41
png_write_sig @208
png_check_cHRM_fixed @217

3
scripts/pngos2.def
View File

@ -2,7 +2,7 @@
; PNG.LIB module definition file for OS/2
;----------------------------------------
; Version 1.0.50
; Version 1.0.51rc01
LIBRARY PNG
DESCRIPTION "PNG image compression library for OS/2"
@ -11,7 +11,6 @@ DATA PRELOAD MOVEABLE MULTIPLE
EXPORTS
png_build_grayscale_palette
png_check_sig
png_chunk_error

5
scripts/pngw32.def
View File

@ -5,7 +5,7 @@
LIBRARY
EXPORTS
;Version 1.0.50
;Version 1.0.51rc01
png_build_grayscale_palette @1
png_check_sig @2
png_chunk_error @3
@ -194,3 +194,6 @@ EXPORTS
png_write_init_3 @176
png_info_init_3 @177
png_destroy_struct @178
png_get_uint_32 @200
png_get_uint_16 @202
png_get_int_32 @204

2
scripts/pngw32.rc
View File

@ -90,7 +90,7 @@ BEGIN
VALUE "FileDescription", "PNG image compression library\000"
VALUE "FileVersion", PNG_LIBPNG_VER_STRING "\000"
VALUE "InternalName", PNG_LIBPNG_DLLFNAME QUOTE(PNG_LIBPNG_VER_DLLNUM) PNG_LIBPNG_DLLFNAME_POSTFIX " (Windows 32 bit)\000"
VALUE "LegalCopyright", "\251 1998-2004 Glenn Randers-Pehrson et al.\000"
VALUE "LegalCopyright", "\251 1998-2009 Glenn Randers-Pehrson et al.\000"
#ifdef PNG_USER_VERSIONINFO_LEGALTRADEMARKS
VALUE "LegalTrademarks", PNG_USER_VERSIONINFO_LEGALTRADEMARKS "\000"
#endif /* PNG_USER_VERSIONINFO_LEGALTRADEMARKS */

2
scripts/smakefile.ppc
View File

@ -1,7 +1,7 @@
# Amiga powerUP (TM) Makefile
# makefile for libpng and SAS C V6.58/7.00 PPC compiler
# Copyright (C) 1998 by Andreas R. Kleinert
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h