diff options
94 files changed, 3252 insertions, 17268 deletions
@@ -1,5 +1,5 @@ -Libpng 1.2.35 - February 14, 2009 +Libpng 1.2.38 - July 16, 2009 This is a public release of libpng, intended for use in production codes. @@ -8,48 +8,58 @@ Files available for download: Source files with LF line endings (for Unix/Linux) and with a "configure" script - libpng-1.2.35.tar.gz - libpng-1.2.35.tar.lzma + libpng-1.2.38.tar.gz + libpng-1.2.38.tar.lzma (Get the lzma codec from <http://tukaani.org/lzma>). - libpng-1.2.35.tar.bz2 + libpng-1.2.38.tar.bz2 Source files with LF line endings (for Unix/Linux) without the "configure" script - libpng-1.2.35-no-config.tar.gz - libpng-1.2.35-no-config.tar.lzma - libpng-1.2.35-no-config.tar.bz2 + libpng-1.2.38-no-config.tar.gz + libpng-1.2.38-no-config.tar.lzma + libpng-1.2.38-no-config.tar.bz2 Source files with CRLF line endings (for Windows), without the "configure" script - lpng1235.zip - lpng1235.7z - lpng1235.tar.bz2 + lpng1238.zip + lpng1238.7z + lpng1238.tar.bz2 Project files - libpng-1.2.35-project-netware.zip - libpng-1.2.35-project-wince.zip + libpng-1.2.38-project-netware.zip + libpng-1.2.38-project-wince.zip Other information: - libpng-1.2.35-README.txt - libpng-1.2.35-KNOWNBUGS.txt - libpng-1.2.35-LICENSE.txt - libpng-1.2.35-Y2K-compliance.txt - libpng-1.2.35-[previous version]-diff.txt + libpng-1.2.38-README.txt + libpng-1.2.38-KNOWNBUGS.txt + libpng-1.2.38-LICENSE.txt + libpng-1.2.38-Y2K-compliance.txt + libpng-1.2.38-[previous version]-diff.txt -Changes since the last public release (1.2.34): +Changes since the last public release (1.2.37): + +version 1.2.38 [July 16, 2009] + + Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR() + multiple times and to specify the sample order in the tRNS chunk, + because the ISO PNG specification has a typo in the tRNS table. + Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to + PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism + available for ignoring known chunks even when not saving unknown chunks. + Added PNG_NO_HANDLE_AS_UNKNOWN in the PNG_LEGACY_SUPPORTED block of + pngconf.h, and moved the various unknown chunk macro definitions + outside of the PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks. + Added a reference to the libpng license in each source file. + Rebuilt configure scripts with autoconf-2.63. -version 1.2.35 [February 14, 2009] - Zero out all arrays of pointers after png_malloc(). (Tavis Ormandy) - Use png_memset() instead of a loop to intialize pointers. We realize - this will not work on platforms where the NULL pointer is not all zeroes. Send comments/corrections/commendations to png-mng-implement at lists.sf.net -(subscription required; visit +(subscription required; visit https://lists.sourceforge.net/lists/listinfo/png-mng-implement to subscribe) or to glennrp at users.sourceforge.net @@ -1,4 +1,4 @@ - +/* CHANGES - changes for libpng version 0.2 @@ -1179,7 +1179,7 @@ version 1.2.4beta3 [June 28, 2002] Plugged memory leak of row_buf in pngtest.c when there is a png_error(). Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data. Added "test-installed" target to makefile.32sunu, makefile.64sunu, - makefile.beos, makefile.darwin, makefile.dec, makefile.macosx, + makefile.beos, makefile.darwin, makefile.dec, makefile.macosx, makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9. version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002] Added "test-installed" target to makefile.cygwin and makefile.sco. @@ -1387,7 +1387,7 @@ version 1.2.8beta5 [November 20, 2004] Use png_ptr->flags instead of png_ptr->transformations to pass PNG_STRIP_ALPHA info to png_do_strip_filler(), to preserve ABI compatibility. - Revised handling of SPECIALBUILD, PRIVATEBUILD, + Revised handling of SPECIALBUILD, PRIVATEBUILD, PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING. version 1.2.8rc1 [November 24, 2004] Moved handling of BUILD macros from pngconf.h to png.h @@ -1685,14 +1685,14 @@ version 1.2.16beta1 [January 6, 2007] version 1.2.16beta2 [January 16, 2007] Revised scripts/CMakeLists.txt - + version 1.0.24, 1.2.16 [January 31, 2007] No changes. - + version 1.2.17beta1 [March 6, 2007] Revised scripts/CMakeLists.txt to install both shared and static libraries. Deleted a redundant line from pngset.c. - + version 1.2.17beta2 [April 26, 2007] Relocated misplaced test for png_ptr == NULL in pngpread.c Change "==" to "&" for testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN @@ -1713,7 +1713,7 @@ version 1.2.17rc2 [May 8, 2007] Added png_ptr->unknown_chunk to hold working unknown chunk data, so it can be free'ed in case of error. Revised unknown chunk handling in pngrutil.c and pngpread.c to use this structure. - + version 1.2.17rc3 [May 8, 2007] Revised symbol-handling in configure script. @@ -2186,7 +2186,7 @@ version 1.2.30beta03 [July 6, 2008] version 1.2.30beta04 [July 10, 2008] Merged more cosmetic whitespace changes from libpng-1.4.0beta19. -version 1.0.38rc01, 1.2.30rc01 [February 14, 2009] +version 1.0.38rc01, 1.2.30rc01 [July 18, 2008] No changes. version 1.0.38rc02, 1.2.30rc02 [July 21, 2008] @@ -2310,7 +2310,7 @@ version 1.0.42, 1.2.34 [December 18, 2008] version 1.2.35beta01 [February 4, 2009] Zero out some arrays of pointers after png_malloc(). (Tavis Ormandy) -version 1.2.35beta02 [Feburary 4, 2009] +version 1.2.35beta02 [February 4, 2009] Zero out more arrays of pointers after png_malloc(). version 1.2.35beta03 [February 5, 2009] @@ -2323,9 +2323,116 @@ version 1.2.35rc01 [February 11, 2009] version 1.2.35rc02 [February 12, 2009] Fix typo in new png_memset call in pngset.c (png_color should be png_charp) +version 1.2.35 [February 14, 2009] + No changes. + version 1.0.43 and 1.2.35 [February 14, 2009] No changes. +version 1.2.36beta01 [February 28, 2009] + Revised comments in png_set_read_fn() and png_set_write_fn(). + Revised order of #ifdef's and indentation in png_debug definitions of png.h + bug introduced in libpng-1.2.34. + +version 1.2.36beta02 [March 21, 2009] + Use png_memset() after png_malloc() of big_row_buf when reading an + interlaced file, to avoid a possible UMR. + Undid recent revision of PNG_NO_STDIO version of png_write_flush(). Users + having trouble with fflush() can build with PNG_NO_WRITE_FLUSH defined. + Revised libpng*.txt documentation about use of png_write_flush(). + Removed fflush() from pngtest.c. + Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h + +version 1.2.36beta03 [March 27, 2009] + Relocated misplaced PNG_1_0_X define in png.h that caused the prototype + for png_set_strip_error_numbers() to be omitted from PNG_NO_ASSEMBLER_CODE + builds. This bug was introduced in libpng-1.2.15beta4. + Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt + +version 1.2.36beta04 [April 5, 2009] + Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles) + +version 1.2.36beta05 [April 24, 2009] + Added "ifndef PNG_SKIP_SETJMP_CHECK" block in pngconf.h to allow + application code writers to bypass the check for multiple inclusion + of setjmp.h when they know that it is safe to ignore the situation. + Made some cosmetic changes to whitespace in pngtest output. + Renamed "user_chunk_data" to "my_user_chunk_data" in pngtest.c to suppress + "shadowed declaration" warning from gcc-4.3.3. + Renamed "gamma" to "png_gamma" in pngset.c to avoid "shadowed declaration" + warning about a global "gamma" variable in math.h on some platforms. + +version 1.2.36rc01 [April 30, 2009] + No changes. + +version 1.0.44 and 1.2.36 [May 7, 2009] + No changes. + +version 1.2.37beta01 [May 14, 2009] + Fixed inconsistency in pngrutil.c, introduced in libpng-1.2.36. The + memset() was using "png_ptr->rowbytes" instead of "row_bytes", which + the corresponding png_malloc() uses (Joe Drew). + Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri) + Updated some of the makefiles in the scripts directory (merged with + those in libpng-1.4.0beta57). + +version 1.2.37beta02 [May 19, 2009] + Fixed typo in libpng documentation (FILTER_AVE should be FILTER_AVG) + Relocated misplaced #endif in pngwrite.c, sCAL chunk handler. + Conditionally compile png_read_finish_row() which is not used by + progressive readers. + Added contrib/pngminim/preader to demonstrate building minimal progressive + decoder, based on contrib/gregbook with embedded libpng and zlib. + +version 1.2.37beta03 [May 20, 2009] + In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there + is only one makefile in those directories, and revised the README files + accordingly. + Reformated sources in libpng style (3-space indentation, comment format) + +version 1.2.37rc01 [May 27, 2009] + No changes. + +versions 1.2.37 and 1.0.45 [June 4, 2009] + Reformatted several remaining "else statement;" and "if () statement;" into + two lines. + Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h + and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h + Added sections about the git repository and our coding style to the + documentation (merged from libpng-1.4.0beta62) + Added a section to the libpng documentation about using png_get_io_ptr() + in configure scripts to detect the presence of libpng. + +version 1.2.38beta01 [June 17, 2009] + Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR() + multiple times and to specify the sample order in the tRNS chunk, + because the ISO PNG specification has a typo in the tRNS table. + Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to + PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism + available for ignoring known chunks even when not saving unknown chunks. + Adopted preference for consistent use of "#ifdef" and "#ifndef" versus + "#if defined()" and "if !defined()" where possible. + Added PNG_NO_HANDLE_AS_UNKNOWN in the PNG_LEGACY_SUPPORTED block of + pngconf.h, and moved the various unknown chunk macro definitions + outside of the PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks. + +version 1.0.46 [June 18, 2009] + Removed some editing cruft from scripts/libpng.pc.in and some makefiles. + +version 1.2.38rc01 [June 24, 2009] + No changes. + +version 1.2.38rc02 [June 29, 2009] + Added a reference to the libpng license in each source file. + +version 1.2.38rc03 [July 11, 2009] + Revised references to the libpng license in pngconf.h and contrib/visupng + source files. + Rebuilt configure scripts with autoconf-2.63. + +version 1.0.47 and 1.2.38 [July 16, 2009] + No changes. + Send comments/corrections/commendations to png-mng-implement at lists.sf.net (subscription required; visit https://lists.sourceforge.net/lists/listinfo/png-mng-implement @@ -2333,3 +2440,4 @@ to subscribe) or to glennrp at users.sourceforge.net Glenn R-P +*/ @@ -1,5 +1,5 @@ -Installing libpng version 1.2.35 - February 14, 2009 +Installing libpng version 1.2.38 - July 16, 2009 On Unix/Linux and similar systems, you can simply type @@ -44,7 +44,7 @@ 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-1.2.35" or "lpng109" and "zlib-1.2.1" +might be called "libpng-1.2.38" or "lpng109" and "zlib-1.2.1" or "zlib121") so that you have directories called "zlib" and "libpng". Your directory structure should look like this: @@ -101,9 +101,9 @@ include CMakeLists.txt => "cmake" script makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.elf => Linux/ELF makefile symbol versioning, - gcc, creates libpng12.so.0.1.2.35) + gcc, creates libpng12.so.0.1.2.38) makefile.linux => Linux/ELF makefile - (gcc, creates libpng12.so.0.1.2.35) + (gcc, creates libpng12.so.0.1.2.38) makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.knr => Archaic UNIX Makefile that converts files with ansi2knr (Requires ansi2knr.c from @@ -125,14 +125,14 @@ include makefile.openbsd => OpenBSD makefile makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib) makefile.sggcc => Silicon Graphics (gcc, - creates libpng12.so.0.1.2.35) + creates libpng12.so.0.1.2.38) makefile.sunos => Sun makefile makefile.solaris => Solaris 2.X makefile (gcc, - creates libpng12.so.0.1.2.35) + creates libpng12.so.0.1.2.38) makefile.solaris-x86 => Solaris/intelMMX 2.X makefile (gcc, - creates libpng12.so.0.1.2.35) + creates libpng12.so.0.1.2.38) makefile.so9 => Solaris 9 makefile (gcc, - creates libpng12.so.0.1.2.35) + creates libpng12.so.0.1.2.38) 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 @@ -197,23 +197,3 @@ instead, as demonstrated in contrib/visupng of the libpng distribution. Further information can be found in the README and libpng.txt files, in the individual makefiles, in png.h, and the manual pages libpng.3 and png.5. - - -Using the ./configure script -- 16 December 2002. -================================================= - - -The ./configure script should work compatibly with what scripts/makefile.* -did, however there are some options you need to add to configure explicitly, -which previously was done semi-automatically (if you didn't edit -scripts/makefile.* yourself, that is) - - -CFLAGS="-Wall -O -funroll-loops \ --malign-loops=2 -malign-functions=2" ./configure --prefix=/usr/include \ ---with-pkgconfigdir=/usr/lib/pkgconfig --includedir=/usr/include - -You can alternatively specify --includedir=/usr/include, /usr/local/include, -/usr/include/png12, or whatever. - - @@ -1,5 +1,5 @@ -Known bugs in libpng version 1.2.35 +Known bugs in libpng version 1.2.38 1. February 23, 2006: The custom makefiles don't build libpng with -lz. @@ -8,8 +8,10 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: If you modify libpng you may insert additional notices immediately following this sentence. -libpng versions 1.2.6, August 15, 2004, through 1.2.35, February 14, 2009, are -Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are +This code is released under the libpng license. + +libpng versions 1.2.6, August 15, 2004, through 1.2.38, July 16, 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 @@ -106,4 +108,4 @@ certification mark of the Open Source Initiative. Glenn Randers-Pehrson glennrp at users.sourceforge.net -February 14, 2009 +July 16, 2009 @@ -1,4 +1,4 @@ -README for libpng version 1.2.35 - February 14, 2009 (shared library 12.0) +README for libpng version 1.2.38 - July 16, 2009 (shared library 12.0) See the note about version numbers near the top of png.h See INSTALL for instructions on how to install libpng. @@ -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 libpng12.so.0.1.2.35) + gcc, creates libpng12.so.0.1.2.38) makefile.linux => Linux/ELF makefile - (gcc, creates libpng12.so.0.1.2.35) + (gcc, creates libpng12.so.0.1.2.38) makefile.gcmmx => Linux/ELF makefile - (gcc, creates libpng12.so.0.1.2.35, + (gcc, creates libpng12.so.0.1.2.38, 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 libpng12.so.0.1.2.35) + (gcc, creates libpng12.so.0.1.2.38) makefile.sunos => Sun makefile makefile.solaris => Solaris 2.X makefile - (gcc, creates libpng12.so.0.1.2.35) + (gcc, creates libpng12.so.0.1.2.38) makefile.so9 => Solaris 9 makefile - (gcc, creates libpng12.so.0.1.2.35) + (gcc, creates libpng12.so.0.1.2.38) 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 @@ -22,3 +22,4 @@ Build gamma tables using fixed point (and do away with floating point entirely). Use greater precision when changing to linear gamma for compositing against background and doing rgb-to-gray transformation. Investigate pre-incremented loop counters and other loop constructions. +Add interpolated method of handling interlacing. @@ -1,13 +1,13 @@ Y2K compliance in libpng: ========================= - February 14, 2009 + July 16, 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 1.2.35 are Y2K compliant. It is my belief that earlier + upward through 1.2.38 are Y2K compliant. It is my belief that earlier versions were also Y2K compliant. Libpng only has three year fields. One is a 2-byte unsigned integer @@ -1,15015 +1,13 @@ -#! /bin/sh -# Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.62 for libpng 1.2.35. -# -# Report bugs to <png-mng-implement@lists.sourceforge.net>. -# -# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, -# 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. -# This configure script is free software; the Free Software Foundation -# gives unlimited permission to copy, distribute and modify it. -## --------------------- ## -## M4sh Initialization. ## -## --------------------- ## +#!/bin/sh +echo " + There is no \"configure\" script in this distribution of + libpng-1.2.38. -# Be more Bourne compatible -DUALCASE=1; export DUALCASE # for MKS sh -if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then - emulate sh - NULLCMD=: - # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which - # is contrary to our usage. Disable this feature. - alias -g '${1+"$@"}'='"$@"' - setopt NO_GLOB_SUBST -else - case `(set -o) 2>/dev/null` in - *posix*) set -o posix ;; -esac + Instead, please copy the appropriate makefile for your system from the + \"scripts\" directory. 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If nonempty, add APPEND to the result, -# otherwise set result to NONDIR_REPLACEMENT. -func_dirname () -{ - case ${1} in - */*) func_dirname_result="${1%/*}${2}" ;; - * ) func_dirname_result="${3}" ;; - esac -} - -# func_basename file -func_basename () -{ - func_basename_result="${1##*/}" -} - -# func_dirname_and_basename file append nondir_replacement -# perform func_basename and func_dirname in a single function -# call: -# dirname: Compute the dirname of FILE. If nonempty, -# add APPEND to the result, otherwise set result -# to NONDIR_REPLACEMENT. -# value returned in "$func_dirname_result" -# basename: Compute filename of FILE. -# value retuned in "$func_basename_result" -# Implementation must be kept synchronized with func_dirname -# and func_basename. 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If nonempty, add APPEND to the result, -# otherwise set result to NONDIR_REPLACEMENT. -func_dirname () -{ - # Extract subdirectory from the argument. - func_dirname_result=`$ECHO "X${1}" | $Xsed -e "$dirname"` - if test "X$func_dirname_result" = "X${1}"; then - func_dirname_result="${3}" - else - func_dirname_result="$func_dirname_result${2}" - fi -} - -# func_basename file -func_basename () -{ - func_basename_result=`$ECHO "X${1}" | $Xsed -e "$basename"` -} - - -# func_stripname prefix suffix name -# strip PREFIX and SUFFIX off of NAME. -# PREFIX and SUFFIX must not contain globbing or regex special -# characters, hashes, percent signs, but SUFFIX may contain a leading -# dot (in which case that matches only a dot). -# func_strip_suffix prefix name -func_stripname () -{ - case ${2} in - .*) func_stripname_result=`$ECHO "X${3}" \ - | $Xsed -e "s%^${1}%%" -e "s%\\\\${2}\$%%"`;; - *) func_stripname_result=`$ECHO "X${3}" \ - | $Xsed -e "s%^${1}%%" -e "s%${2}\$%%"`;; - esac -} - -# sed scripts: -my_sed_long_opt='1s/^\(-[^=]*\)=.*/\1/;q' -my_sed_long_arg='1s/^-[^=]*=//' - -# func_opt_split -func_opt_split () -{ - func_opt_split_opt=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_opt"` - func_opt_split_arg=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_arg"` -} - -# func_lo2o object -func_lo2o () -{ - func_lo2o_result=`$ECHO "X${1}" | $Xsed -e "$lo2o"` -} - -# func_xform libobj-or-source -func_xform () -{ - func_xform_result=`$ECHO "X${1}" | $Xsed -e 's/\.[^.]*$/.lo/'` -} - -# func_arith arithmetic-term... -func_arith () -{ - func_arith_result=`expr "$@"` -} - -# func_len string -# STRING may not start with a hyphen. -func_len () -{ - func_len_result=`expr "$1" : ".*" 2>/dev/null || echo $max_cmd_len` -} - -_LT_EOF -esac - -case $lt_shell_append in - yes) - cat << \_LT_EOF >> "$cfgfile" - -# func_append var value -# Append VALUE to the end of shell variable VAR. -func_append () -{ - eval "$1+=\$2" -} -_LT_EOF - ;; - *) - cat << \_LT_EOF >> "$cfgfile" - -# func_append var value -# Append VALUE to the end of shell variable VAR. -func_append () -{ - eval "$1=\$$1\$2" -} - -_LT_EOF - ;; - esac - - - sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \ - || (rm -f "$cfgfile"; exit 1) - - mv -f "$cfgfile" "$ofile" || - (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile") - chmod +x "$ofile" - - ;; - "libpng-config":F) chmod +x libpng-config ;; - - esac -done # for ac_tag - - -{ (exit 0); exit 0; } -_ACEOF -chmod +x $CONFIG_STATUS -ac_clean_files=$ac_clean_files_save - -test $ac_write_fail = 0 || - { { $as_echo "$as_me:$LINENO: error: write failure creating $CONFIG_STATUS" >&5 -$as_echo "$as_me: error: write failure creating $CONFIG_STATUS" >&2;} - { (exit 1); exit 1; }; } - - -# configure is writing to config.log, and then calls config.status. -# config.status does its own redirection, appending to config.log. -# Unfortunately, on DOS this fails, as config.log is still kept open -# by configure, so config.status won't be able to write to it; its -# output is simply discarded. So we exec the FD to /dev/null, -# effectively closing config.log, so it can be properly (re)opened and -# appended to by config.status. When coming back to configure, we -# need to make the FD available again. -if test "$no_create" != yes; then - ac_cs_success=: - ac_config_status_args= - test "$silent" = yes && - ac_config_status_args="$ac_config_status_args --quiet" - exec 5>/dev/null - $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false - exec 5>>config.log - # Use ||, not &&, to avoid exiting from the if with $? = 1, which - # would make configure fail if this is the last instruction. - $ac_cs_success || { (exit 1); exit 1; } -fi -if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then - { $as_echo "$as_me:$LINENO: WARNING: Unrecognized options: $ac_unrecognized_opts" >&5 -$as_echo "$as_me: WARNING: Unrecognized options: $ac_unrecognized_opts" >&2;} -fi - diff --git a/contrib/pngminim/decoder/README b/contrib/pngminim/decoder/README index 4f71082..a656e0b 100644 --- a/contrib/pngminim/decoder/README +++ b/contrib/pngminim/decoder/README @@ -1,6 +1,9 @@ This demonstrates the use of PNG_USER_CONFIG and pngusr.h -To build a minimal read-only decoder, run +To build a minimal read-only decoder with embedded libpng and zlib, run + gather.sh # to collect needed files from pngminus, libpng, and zlib - make -f makefile.std - + make + +If you prefer to use the shared libraries, go to contrib/pngminus +and build the png2pnm application there. diff --git a/contrib/pngminim/decoder/gather.sh b/contrib/pngminim/decoder/gather.sh index e28ddaf..6230e81 100755 --- a/contrib/pngminim/decoder/gather.sh +++ b/contrib/pngminim/decoder/gather.sh @@ -1,7 +1,7 @@ cp ../../pngminus/png2pnm.c pngm2pnm.c cp ../../../*.h . cp ../../../*.c . -rm example.c pnggccrd.c pngvcrd.c pngtest.c pngpread.c +rm example.c pnggccrd.c pngvcrd.c pngtest.c pngpread.c pngw*.c # change the following 2 lines if zlib is somewhere else cp ../../../../zlib/*.h . cp ../../../../zlib/*.c . diff --git a/contrib/pngminim/decoder/pngusr.h b/contrib/pngminim/decoder/pngusr.h index f94b83a..4502c30 100644 --- a/contrib/pngminim/decoder/pngusr.h +++ b/contrib/pngminim/decoder/pngusr.h @@ -1,12 +1,21 @@ /* minrdpngconf.h: headers to make a minimal png-read-only library - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 2007 Glenn Randers-Pehrson + * + * Copyright (c) 2007, 2009 Glenn Randers-Pehrson + * + * This code is released under the zlib/libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson */ #ifndef MINRDPNGCONF_H #define MINRDPNGCONF_H +#ifdef NJET + /* No 16-bit support beyond reading with strip_16 */ +#endif + #define PNG_NO_GLOBAL_ARRAYS #define PNG_NO_WARNINGS @@ -26,6 +35,7 @@ #define PNG_NO_READ_PACK #define PNG_NO_READ_PACKSWAP #define PNG_NO_READ_FILLER +#define PNG_NO_READ_SWAP #define PNG_NO_READ_SWAP_ALPHA #define PNG_NO_READ_INVERT_ALPHA #define PNG_NO_READ_RGB_TO_GRAY @@ -40,6 +50,7 @@ #define PNG_NO_READ_sBIT #define PNG_NO_READ_sCAL #define PNG_NO_READ_sPLT +#define PNG_NO_READ_sRGB #define PNG_NO_READ_TEXT #define PNG_NO_READ_tIME #define PNG_NO_READ_UNKNOWN_CHUNKS diff --git a/contrib/pngminim/encoder/README b/contrib/pngminim/encoder/README index 4a68fc8..2285544 100644 --- a/contrib/pngminim/encoder/README +++ b/contrib/pngminim/encoder/README @@ -1,6 +1,9 @@ This demonstrates the use of PNG_USER_CONFIG and pngusr.h -To build a minimal write-only encoder, run +To build a minimal write-only decoder with embedded libpng and zlib, run + gather.sh # to collect needed files from pngminus, libpng, and zlib - make -f makefile.std + make +If you prefer to use the shared libraries, go to contrib/pngminus +and build the pnm2png application there. diff --git a/contrib/pngminim/encoder/gather.sh b/contrib/pngminim/encoder/gather.sh index 7b0c803..46e04da 100755 --- a/contrib/pngminim/encoder/gather.sh +++ b/contrib/pngminim/encoder/gather.sh @@ -1,7 +1,7 @@ cp ../../pngminus/pnm2png.c pnm2pngm.c cp ../../../*.h . cp ../../../*.c . -rm example.c pnggccrd.c pngvcrd.c pngtest.c pngr*.c +rm example.c pnggccrd.c pngvcrd.c pngtest.c pngr*.c pngpread.c # Change the next 2 lines if zlib is somewhere else. cp ../../../../zlib/*.h . cp ../../../../zlib/*.c . diff --git a/contrib/pngminim/encoder/pngusr.h b/contrib/pngminim/encoder/pngusr.h index 904673a..9f58c98 100644 --- a/contrib/pngminim/encoder/pngusr.h +++ b/contrib/pngminim/encoder/pngusr.h @@ -1,6 +1,11 @@ /* minwrpngconf.h: headers to make a minimal png-write-only library - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 2007 Glenn Randers-Pehrson + * + * Copyright (c) 2007, 2009 Glenn Randers-Pehrson + * + * This code is released under the zlib/libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson */ @@ -26,6 +31,7 @@ #define PNG_NO_WRITE_PACK #define PNG_NO_WRITE_PACKSWAP #define PNG_NO_WRITE_FILLER +#define PNG_NO_WRITE_SWAP #define PNG_NO_WRITE_SWAP_ALPHA #define PNG_NO_WRITE_INVERT_ALPHA #define PNG_NO_WRITE_RGB_TO_GRAY @@ -33,7 +39,6 @@ #define PNG_NO_WRITE_bKGD #define PNG_NO_WRITE_cHRM #define PNG_NO_WRITE_gAMA -#define PNG_NO_WRITE_sRGB #define PNG_NO_WRITE_hIST #define PNG_NO_WRITE_iCCP #define PNG_NO_WRITE_oFFs @@ -42,6 +47,7 @@ #define PNG_NO_WRITE_sBIT #define PNG_NO_WRITE_sCAL #define PNG_NO_WRITE_sPLT +#define PNG_NO_WRITE_sRGB #define PNG_NO_WRITE_TEXT #define PNG_NO_WRITE_tIME #define PNG_NO_WRITE_UNKNOWN_CHUNKS @@ -51,6 +57,7 @@ #define PNG_NO_WRITE_FILTER #define PNG_NO_WRITE_WEIGHTED_FILTER #define PNG_NO_WRITE_INTERLACING_SUPPORTED +#define PNG_NO_WRITE_FLUSH #define PNG_NO_INFO_IMAGE #define PNG_NO_USER_MEM diff --git a/contrib/visupng/PngFile.c b/contrib/visupng/PngFile.c index 959afe9..6154ce2 100644 --- a/contrib/visupng/PngFile.c +++ b/contrib/visupng/PngFile.c @@ -2,8 +2,11 @@ // PNGFILE.C -- Image File Functions //------------------------------------- -// Copyright 2000, Willem van Schaik. For conditions of distribution and -// use, see the copyright/license/disclaimer notice in png.h +// Copyright 2000, Willem van Schaik. +// +// This code is released under the libpng license. +// For conditions of distribution and use, see the disclaimer +// and license in png.h #include <windows.h> #include <commdlg.h> diff --git a/contrib/visupng/PngFile.h b/contrib/visupng/PngFile.h index a900fd4..f695811 100644 --- a/contrib/visupng/PngFile.h +++ b/contrib/visupng/PngFile.h @@ -2,8 +2,11 @@ // PNGFILE.H -- Header File for pngfile.c //------------------------------------------ -// Copyright 2000, Willem van Schaik. For conditions of distribution and -// use, see the copyright/license/disclaimer notice in png.h +// Copyright 2000, Willem van Schaik. + +// This code is released under the libpng license. +// For conditions of distribution and use, see the disclaimer +// and license in png.h #include <stdio.h> #include <stdlib.h> diff --git a/contrib/visupng/README.txt b/contrib/visupng/README.txt index 4a753d8..4047119 100644 --- a/contrib/visupng/README.txt +++ b/contrib/visupng/README.txt @@ -1,8 +1,11 @@ Microsoft Developer Studio Build File, Format Version 6.00 for VisualPng ------------------------------------------------------------------------ -Copyright 2000, Willem van Schaik. For conditions of distribution and -use, see the copyright/license/disclaimer notice in png.h +Copyright 2000, Willem van Schaik. + +This code is released under the libpng license. +For conditions of distribution and use, see the disclaimer +and license in png.h As a PNG .dll demo VisualPng is finished. More features would only hinder the program's objective. However, further extensions (like support for other diff --git a/contrib/visupng/VisualPng.c b/contrib/visupng/VisualPng.c index f2cf6ee..2018999 100644 --- a/contrib/visupng/VisualPng.c +++ b/contrib/visupng/VisualPng.c @@ -2,8 +2,11 @@ // VisualPng.C -- Shows a PNG image //------------------------------------ -// Copyright 2000, Willem van Schaik. For conditions of distribution and -// use, see the copyright/license/disclaimer notice in png.h +// Copyright 2000, Willem van Schaik. + +// This code is released under the libpng license. +// For conditions of distribution and use, see the disclaimer +// and license in png.h // switches @@ -2,7 +2,7 @@ #if 0 /* in case someone actually tries to compile this */ /* example.c - an example of using libpng - * Last changed in libpng 1.2.35 [February 14, 2009] + * Last changed in libpng 1.2.37 [June 4, 2009] * This file has been placed in the public domain by the authors. * Maintained 1998-2009 Glenn Randers-Pehrson * Maintained 1996, 1997 Andreas Dilger) @@ -91,14 +91,15 @@ void read_png(char *file_name) /* We need to open the file */ if ((fp = fopen(file_name, "rb")) == NULL) return (ERROR); + #else no_open_file /* prototype 2 */ -void read_png(FILE *fp, unsigned int sig_read) /* file is already open */ +void read_png(FILE *fp, unsigned int sig_read) /* File is already open */ { png_structp png_ptr; png_infop info_ptr; png_uint_32 width, height; int bit_depth, color_type, interlace_type; -#endif no_open_file /* only use one prototype! */ +#endif no_open_file /* Only use one prototype! */ /* Create and initialize the png_struct with the desired error handler * functions. If you want to use the default stderr and longjump method, @@ -164,6 +165,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */ * pixels) into the info structure with this call: */ png_read_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL); + #else /* OK, you're doing it the hard way, with the lower-level functions */ @@ -175,13 +177,13 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */ png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, int_p_NULL, int_p_NULL); -/* Set up the data transformations you want. Note that these are all - * optional. Only call them if you want/need them. Many of the - * transformations only work on specific types of images, and many - * are mutually exclusive. - */ + /* Set up the data transformations you want. Note that these are all + * optional. Only call them if you want/need them. Many of the + * transformations only work on specific types of images, and many + * are mutually exclusive. + */ - /* tell libpng to strip 16 bit/color files down to 8 bits/color */ + /* Tell libpng to strip 16 bit/color files down to 8 bits/color */ png_set_strip_16(png_ptr); /* Strip alpha bytes from the input data without combining with the @@ -228,10 +230,11 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */ png_set_background(png_ptr, &my_background, PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); - /* Some suggestions as to how to get a screen gamma value */ - - /* Note that screen gamma is the display_exponent, which includes - * the CRT_exponent and any correction for viewing conditions */ + /* Some suggestions as to how to get a screen gamma value + * + * Note that screen gamma is the display_exponent, which includes + * the CRT_exponent and any correction for viewing conditions + */ if (/* We have a user-defined screen gamma value */) { screen_gamma = user-defined screen_gamma; @@ -244,7 +247,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */ /* If we don't have another value */ else { - screen_gamma = 2.2; /* A good guess for a PC monitors in a dimly + screen_gamma = 2.2; /* A good guess for a PC monitor in a dimly lit room */ screen_gamma = 1.7 or 1.0; /* A good guess for Mac systems */ } @@ -277,7 +280,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */ png_colorp palette; /* This reduces the image to the application supplied palette */ - if (/* we have our own palette */) + if (/* We have our own palette */) { /* An array of colors to which the image should be dithered */ png_color std_color_cube[MAX_SCREEN_COLORS]; @@ -297,7 +300,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */ } } - /* invert monochrome files to have 0 as white and 1 as black */ + /* Invert monochrome files to have 0 as white and 1 as black */ png_set_invert_mono(png_ptr); /* If you want to shift the pixel values from the range [0,255] or @@ -306,20 +309,20 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */ */ if (png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT)) { - png_color_8p sig_bit; + png_color_8p sig_bit_p; - png_get_sBIT(png_ptr, info_ptr, &sig_bit); - png_set_shift(png_ptr, sig_bit); + png_get_sBIT(png_ptr, info_ptr, &sig_bit_p); + png_set_shift(png_ptr, sig_bit_p); } - /* flip the RGB pixels to BGR (or RGBA to BGRA) */ + /* Flip the RGB pixels to BGR (or RGBA to BGRA) */ if (color_type & PNG_COLOR_MASK_COLOR) png_set_bgr(png_ptr); - /* swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */ + /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */ png_set_swap_alpha(png_ptr); - /* swap bytes of 16 bit files to least significant byte first */ + /* Swap bytes of 16 bit files to least significant byte first */ png_set_swap(png_ptr); /* Add filler (or alpha) byte (before/after each RGB triplet) */ @@ -374,32 +377,31 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */ #else no_sparkle /* Read the image using the "rectangle" effect */ png_read_rows(png_ptr, png_bytepp_NULL, &row_pointers[y], number_of_rows); -#endif no_sparkle /* use only one of these two methods */ +#endif no_sparkle /* Use only one of these two methods */ } - /* if you want to display the image after every pass, do - so here */ -#endif no_single /* use only one of these two methods */ + /* If you want to display the image after every pass, do so here */ +#endif no_single /* Use only one of these two methods */ } -#endif no_entire /* use only one of these two methods */ +#endif no_entire /* Use only one of these two methods */ - /* read rest of file, and get additional chunks in info_ptr - REQUIRED */ + /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */ png_read_end(png_ptr, info_ptr); #endif hilevel /* At this point you have read the entire image */ - /* clean up after the read, and free any memory allocated - REQUIRED */ + /* Clean up after the read, and free any memory allocated - REQUIRED */ png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL); - /* close the file */ + /* Close the file */ fclose(fp); - /* that's it */ + /* That's it */ return (OK); } -/* progressively read a file */ +/* Progressively read a file */ int initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr) @@ -464,7 +466,7 @@ process_data(png_structp *png_ptr, png_infop *info_ptr, /* This one's new also. Simply give it chunks of data as * they arrive from the data stream (in order, of course). - * On Segmented machines, don't give it any more than 64K. + * On segmented machines, don't give it any more than 64K. * The library seems to run fine with sizes of 4K, although * you can give it much less if necessary (I assume you can * give it chunks of 1 byte, but I haven't tried with less @@ -478,34 +480,35 @@ process_data(png_structp *png_ptr, png_infop *info_ptr, info_callback(png_structp png_ptr, png_infop info) { -/* do any setup here, including setting any of the transformations - * mentioned in the Reading PNG files section. For now, you _must_ - * call either png_start_read_image() or png_read_update_info() - * after all the transformations are set (even if you don't set - * any). You may start getting rows before png_process_data() - * returns, so this is your last chance to prepare for that. - */ + /* Do any setup here, including setting any of the transformations + * mentioned in the Reading PNG files section. For now, you _must_ + * call either png_start_read_image() or png_read_update_info() + * after all the transformations are set (even if you don't set + * any). You may start getting rows before png_process_data() + * returns, so this is your last chance to prepare for that. + */ } row_callback(png_structp png_ptr, png_bytep new_row, png_uint_32 row_num, int pass) { -/* - * This function is called for every row in the image. If the - * image is interlaced, and you turned on the interlace handler, - * this function will be called for every row in every pass. - * - * In this function you will receive a pointer to new row data from - * libpng called new_row that is to replace a corresponding row (of - * the same data format) in a buffer allocated by your application. - * - * The new row data pointer new_row may be NULL, indicating there is - * no new data to be replaced (in cases of interlace loading). - * - * If new_row is not NULL then you need to call - * png_progressive_combine_row() to replace the corresponding row as - * shown below: - */ + /* + * This function is called for every row in the image. If the + * image is interlaced, and you turned on the interlace handler, + * this function will be called for every row in every pass. + * + * In this function you will receive a pointer to new row data from + * libpng called new_row that is to replace a corresponding row (of + * the same data format) in a buffer allocated by your application. + * + * The new row data pointer "new_row" may be NULL, indicating there is + * no new data to be replaced (in cases of interlace loading). + * + * If new_row is not NULL then you need to call + * png_progressive_combine_row() to replace the corresponding row as + * shown below: + */ + /* Check if row_num is in bounds. */ if ((row_num >= 0) && (row_num < height)) { @@ -520,44 +523,44 @@ row_callback(png_structp png_ptr, png_bytep new_row, if ((old_row != NULL) && (new_row != NULL)) png_progressive_combine_row(png_ptr, old_row, new_row); } -/* - * The rows and passes are called in order, so you don't really - * need the row_num and pass, but I'm supplying them because it - * may make your life easier. - * - * For the non-NULL rows of interlaced images, you must call - * png_progressive_combine_row() passing in the new row and the - * old row, as demonstrated above. You can call this function for - * NULL rows (it will just return) and for non-interlaced images - * (it just does the png_memcpy for you) if it will make the code - * easier. Thus, you can just do this for all cases: - */ + /* + * The rows and passes are called in order, so you don't really + * need the row_num and pass, but I'm supplying them because it + * may make your life easier. + * + * For the non-NULL rows of interlaced images, you must call + * png_progressive_combine_row() passing in the new row and the + * old row, as demonstrated above. You can call this function for + * NULL rows (it will just return) and for non-interlaced images + * (it just does the png_memcpy for you) if it will make the code + * easier. Thus, you can just do this for all cases: + */ png_progressive_combine_row(png_ptr, old_row, new_row); -/* where old_row is what was displayed for previous rows. Note - * that the first pass (pass == 0 really) will completely cover - * the old row, so the rows do not have to be initialized. After - * the first pass (and only for interlaced images), you will have - * to pass the current row as new_row, and the function will combine - * the old row and the new row. - */ + /* where old_row is what was displayed for previous rows. Note + * that the first pass (pass == 0 really) will completely cover + * the old row, so the rows do not have to be initialized. After + * the first pass (and only for interlaced images), you will have + * to pass the current row as new_row, and the function will combine + * the old row and the new row. + */ } end_callback(png_structp png_ptr, png_infop info) { -/* this function is called when the whole image has been read, - * including any chunks after the image (up to and including - * the IEND). You will usually have the same info chunk as you - * had in the header, although some data may have been added - * to the comments and time fields. - * - * Most people won't do much here, perhaps setting a flag that - * marks the image as finished. - */ + /* This function is called when the whole image has been read, + * including any chunks after the image (up to and including + * the IEND). You will usually have the same info chunk as you + * had in the header, although some data may have been added + * to the comments and time fields. + * + * Most people won't do much here, perhaps setting a flag that + * marks the image as finished. + */ } -/* write a png file */ +/* Write a png file */ void write_png(char *file_name /* , ... other image information ... */) { FILE *fp; @@ -565,7 +568,7 @@ void write_png(char *file_name /* , ... other image information ... */) png_infop info_ptr; png_colorp palette; - /* open the file */ + /* Open the file */ fp = fopen(file_name, "wb"); if (fp == NULL) return (ERROR); @@ -599,30 +602,34 @@ void write_png(char *file_name /* , ... other image information ... */) */ if (setjmp(png_jmpbuf(png_ptr))) { - /* If we get here, we had a problem reading the file */ + /* If we get here, we had a problem writing the file */ fclose(fp); png_destroy_write_struct(&png_ptr, &info_ptr); return (ERROR); } /* One of the following I/O initialization functions is REQUIRED */ + #ifdef streams /* I/O initialization method 1 */ - /* set up the output control if you are using standard C streams */ + /* Set up the output control if you are using standard C streams */ png_init_io(png_ptr, fp); + #else no_streams /* I/O initialization method 2 */ /* If you are using replacement write functions, instead of calling - * png_init_io() here you would call */ + * png_init_io() here you would call + */ png_set_write_fn(png_ptr, (void *)user_io_ptr, user_write_fn, user_IO_flush_function); /* where user_io_ptr is a structure you want available to the callbacks */ -#endif no_streams /* only use one initialization method */ +#endif no_streams /* Only use one initialization method */ #ifdef hilevel /* This is the easy way. Use it if you already have all the - * image info living info in the structure. You could "|" many + * image info living in the structure. You could "|" many * PNG_TRANSFORM flags into the png_transforms integer here. */ png_write_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL); + #else /* This is the hard way */ @@ -637,25 +644,27 @@ void write_png(char *file_name /* , ... other image information ... */) png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, PNG_COLOR_TYPE_???, PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); - /* set the palette if there is one. REQUIRED for indexed-color images */ + /* Set the palette if there is one. REQUIRED for indexed-color images */ palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color)); - /* ... set palette colors ... */ + /* ... Set palette colors ... */ png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH); /* You must not free palette here, because png_set_PLTE only makes a link to - the palette that you malloced. Wait until you are about to destroy - the png structure. */ + * the palette that you malloced. Wait until you are about to destroy + * the png structure. + */ - /* optional significant bit chunk */ - /* if we are dealing with a grayscale image then */ + /* Optional significant bit (sBIT) chunk */ + png_color_8 sig_bit; + /* If we are dealing with a grayscale image then */ sig_bit.gray = true_bit_depth; - /* otherwise, if we are dealing with a color image then */ + /* Otherwise, if we are dealing with a color image then */ sig_bit.red = true_red_bit_depth; sig_bit.green = true_green_bit_depth; sig_bit.blue = true_blue_bit_depth; - /* if the image has an alpha channel then */ + /* If the image has an alpha channel then */ sig_bit.alpha = true_alpha_bit_depth; - png_set_sBIT(png_ptr, info_ptr, sig_bit); + png_set_sBIT(png_ptr, info_ptr, &sig_bit); /* Optional gamma chunk is strongly suggested if you have any guess @@ -680,9 +689,12 @@ void write_png(char *file_name /* , ... other image information ... */) #endif png_set_text(png_ptr, info_ptr, text_ptr, 3); - /* other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs, */ - /* note that if sRGB is present the gAMA and cHRM chunks must be ignored - * on read and must be written in accordance with the sRGB profile */ + /* Other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */ + + /* Note that if sRGB is present the gAMA and cHRM chunks must be ignored + * on read and, if your application chooses to write them, they must + * be written in accordance with the sRGB profile + */ /* Write the file header information. REQUIRED */ png_write_info(png_ptr, info_ptr); @@ -694,7 +706,7 @@ void write_png(char *file_name /* , ... other image information ... */) * write_my_chunk(); * png_write_info(png_ptr, info_ptr); * - * However, given the level of known- and unknown-chunk support in 1.1.0 + * However, given the level of known- and unknown-chunk support in 1.2.0 * and up, this should no longer be necessary. */ @@ -704,11 +716,11 @@ void write_png(char *file_name /* , ... other image information ... */) * at the end. */ - /* set up the transformations you want. Note that these are + /* Set up the transformations you want. Note that these are * all optional. Only call them if you want them. */ - /* invert monochrome pixels */ + /* Invert monochrome pixels */ png_set_invert_mono(png_ptr); /* Shift the pixels up to a legal bit depth and fill in @@ -716,10 +728,10 @@ void write_png(char *file_name /* , ... other image information ... */) */ png_set_shift(png_ptr, &sig_bit); - /* pack pixels into bytes */ + /* Pack pixels into bytes */ png_set_packing(png_ptr); - /* swap location of alpha bytes from ARGB to RGBA */ + /* Swap location of alpha bytes from ARGB to RGBA */ png_set_swap_alpha(png_ptr); /* Get rid of filler (OR ALPHA) bytes, pack XRGB/RGBX/ARGB/RGBA into @@ -727,16 +739,16 @@ void write_png(char *file_name /* , ... other image information ... */) */ png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE); - /* flip BGR pixels to RGB */ + /* Flip BGR pixels to RGB */ png_set_bgr(png_ptr); - /* swap bytes of 16-bit files to most significant byte first */ + /* Swap bytes of 16-bit files to most significant byte first */ png_set_swap(png_ptr); - /* swap bits of 1, 2, 4 bit packed pixel formats */ + /* Swap bits of 1, 2, 4 bit packed pixel formats */ png_set_packswap(png_ptr); - /* turn on interlace handling if you are not using png_write_image() */ + /* Turn on interlace handling if you are not using png_write_image() */ if (interlacing) number_passes = png_set_interlace_handling(png_ptr); else @@ -757,12 +769,14 @@ void write_png(char *file_name /* , ... other image information ... */) row_pointers[k] = image + k*width*bytes_per_pixel; /* One of the following output methods is REQUIRED */ -#ifdef entire /* write out the entire image data in one call */ + +#ifdef entire /* Write out the entire image data in one call */ png_write_image(png_ptr, row_pointers); - /* the other way to write the image - deal with interlacing */ + /* The other way to write the image - deal with interlacing */ + +#else no_entire /* Write out the image data by one or more scanlines */ -#else no_entire /* write out the image data by one or more scanlines */ /* The number of passes is either 1 for non-interlaced images, * or 7 for interlaced images. */ @@ -775,10 +789,10 @@ void write_png(char *file_name /* , ... other image information ... */) for (y = 0; y < height; y++) png_write_rows(png_ptr, &row_pointers[y], 1); } -#endif no_entire /* use only one output method */ +#endif no_entire /* Use only one output method */ /* You can write optional chunks like tEXt, zTXt, and tIME at the end - * as well. Shouldn't be necessary in 1.1.0 and up as all the public + * as well. Shouldn't be necessary in 1.2.0 and up as all the public * chunks are supported and you can use png_set_unknown_chunks() to * register unknown chunks into the info structure to be written out. */ @@ -788,26 +802,33 @@ void write_png(char *file_name /* , ... other image information ... */) #endif hilevel /* If you png_malloced a palette, free it here (don't free info_ptr->palette, - as recommended in versions 1.0.5m and earlier of this example; if - libpng mallocs info_ptr->palette, libpng will free it). If you - allocated it with malloc() instead of png_malloc(), use free() instead - of png_free(). */ + * as recommended in versions 1.0.5m and earlier of this example; if + * libpng mallocs info_ptr->palette, libpng will free it). If you + * allocated it with malloc() instead of png_malloc(), use free() instead + * of png_free(). + */ png_free(png_ptr, palette); palette = NULL; /* Similarly, if you png_malloced any data that you passed in with - png_set_something(), such as a hist or trans array, free it here, - when you can be sure that libpng is through with it. */ + * png_set_something(), such as a hist or trans array, free it here, + * when you can be sure that libpng is through with it. + */ png_free(png_ptr, trans); trans = NULL; + /* Whenever you use png_free() it is a good idea to set the pointer to + * NULL in case your application inadvertently tries to png_free() it + * again. When png_free() sees a NULL it returns without action, thus + * avoiding the double-free security problem. + */ - /* clean up after the write, and free any memory allocated */ + /* Clean up after the write, and free any memory allocated */ png_destroy_write_struct(&png_ptr, &info_ptr); - /* close the file */ + /* Close the file */ fclose(fp); - /* that's it */ + /* That's it */ return (OK); } @@ -1,6 +1,6 @@ -.TH LIBPNG 3 "February 14, 2009" +.TH LIBPNG 3 "July 16, 2009" .SH NAME -libpng \- Portable Network Graphics (PNG) Reference Library 1.2.35 +libpng \- Portable Network Graphics (PNG) Reference Library 1.2.38 .SH SYNOPSIS \fI\fB @@ -821,18 +821,18 @@ Following is a copy of the libpng.txt file that accompanies libpng. .SH LIBPNG.TXT libpng.txt - A description on how to use and modify libpng - libpng version 1.2.35 - February 14, 2009 + libpng version 1.2.38 - July 16, 2009 Updated and distributed by Glenn Randers-Pehrson <glennrp at users.sourceforge.net> - Copyright (c) 1998-2008 Glenn Randers-Pehrson + Copyright (c) 1998-2009 Glenn Randers-Pehrson For conditions of distribution and use, see copyright notice in png.h. Based on: - libpng versions 0.97, January 1998, through 1.2.35 - February 14, 2009 + libpng versions 0.97, January 1998, through 1.2.38 - July 16, 2009 Updated and distributed by Glenn Randers-Pehrson - Copyright (c) 1998-2008 Glenn Randers-Pehrson + Copyright (c) 1998-2009 Glenn Randers-Pehrson libpng 1.0 beta 6 version 0.96 May 28, 1997 Updated and distributed by Andreas Dilger @@ -962,9 +962,10 @@ so if it doesn't work, you don't have much to undo. Of course, you will also want to insure that you are, in fact, dealing with a PNG file. Libpng provides a simple check to see if a file is a PNG file. To use it, pass in the first 1 to 8 bytes of the file to the function -png_sig_cmp(), and it will return 0 if the bytes match the corresponding -bytes of the PNG signature, or nonzero otherwise. Of course, the more bytes -you pass in, the greater the accuracy of the prediction. +png_sig_cmp(), and it will return 0 (false) if the bytes match the +corresponding bytes of the PNG signature, or nonzero (true) otherwise. +Of course, the more bytes you pass in, the greater the accuracy of the +prediction. If you are intending to keep the file pointer open for use in libpng, you must ensure you don't read more than 8 bytes from the beginning @@ -1141,28 +1142,6 @@ To inform libpng about your function, use png_set_read_status_fn(png_ptr, read_row_callback); -.SS Width and height limits - -The PNG specification allows the width and height of an image to be as -large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns. -Since very few applications really need to process such large images, -we have imposed an arbitrary 1-million limit on rows and columns. -Larger images will be rejected immediately with a png_error() call. If -you wish to override this limit, you can use - - png_set_user_limits(png_ptr, width_max, height_max); - -to set your own limits, or use width_max = height_max = 0x7fffffffL -to allow all valid dimensions (libpng may reject some very large images -anyway because of potential buffer overflow conditions). - -You should put this statement after you create the PNG structure and -before calling png_read_info(), png_read_png(), or png_process_data(). -If you need to retrieve the limits that are being applied, use - - width_max = png_get_user_width_max(png_ptr); - height_max = png_get_user_height_max(png_ptr); - .SS Unknown-chunk handling Now you get to set the way the library processes unknown chunks in the @@ -1228,6 +1207,27 @@ 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); .SS The high-level read interface @@ -1671,9 +1671,6 @@ 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. -At the same time, png_set_gray_1_2_4_to_8() was deprecated, and it -will be removed from a future version. - 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. @@ -2525,7 +2522,7 @@ types. PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE | PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB | PNG_FILTER_UP | PNG_FILTER_VALUE_UP | - PNG_FILTER_AVE | PNG_FILTER_VALUE_AVE | + PNG_FILTER_AVG | PNG_FILTER_VALUE_AVG | PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH| PNG_ALL_FILTERS); @@ -2615,10 +2612,14 @@ Some of the more important parts of the png_info are: PNG_INTRAPIXEL_DIFFERENCING) If you call png_set_IHDR(), the call must appear before any of the -other png_set_*() functions, which might require access to some of +other png_set_*() functions, because they might require access to some of the IHDR settings. The remaining png_set_*() functions can be called in any order. +If you wish, you can reset the compression_type, interlace_type, or +filter_method later by calling png_set_IHDR() again; if you do this, the +width, height, bit_depth, and color_type must be the same in each call. + png_set_PLTE(png_ptr, info_ptr, palette, num_palette); palette - the palette for the file @@ -2680,8 +2681,9 @@ in any order. trans_values); trans - array of transparent entries for palette (PNG_INFO_tRNS) - trans_values - graylevel or color sample values of - the single transparent color for + trans_values - graylevel or color sample values + (in order red, green, blue) of the + single transparent color for non-paletted images (PNG_INFO_tRNS) num_trans - number of transparent entries (PNG_INFO_tRNS) @@ -2890,7 +2892,12 @@ transformations are permitted, enabled by the following masks. PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity to transparency PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples - PNG_TRANSFORM_STRIP_FILLER Strip out filler bytes. + PNG_TRANSFORM_STRIP_FILLER Strip out filler + bytes (deprecated). + PNG_TRANSFORM_STRIP_FILLER_BEFORE Strip out leading + filler bytes + PNG_TRANSFORM_STRIP_FILLER_AFTER Strip out trailing + filler bytes If you have valid image data in the info structure (you can use png_set_rows() to put image data in the info structure), simply do this: @@ -3297,9 +3304,15 @@ The replacement I/O functions must have prototypes as follows: png_bytep data, png_size_t length); void user_flush_data(png_structp png_ptr); +The user_read_data() function is responsible for detecting and +handling end-of-data errors. + Supplying NULL for the read, write, or flush functions sets them back -to using the default C stream functions. It is an error to read from -a write stream, and vice versa. +to using the default C stream functions, which expect the io_ptr to +point to a standard *FILE structure. It is probably a mistake +to use NULL for one of write_data_fn and output_flush_fn but not both +of them, unless you have built libpng with PNG_NO_WRITE_FLUSH defined. +It is an error to read from a write stream, and vice versa. Error handling in libpng is done through png_error() and png_warning(). Errors handled through png_error() are fatal, meaning that png_error() @@ -3404,11 +3417,12 @@ you may also have to change the memory allocators (png_malloc, etc.). .SS Configuring for compiler xxx: -All includes for libpng are in pngconf.h. If you need to add/change/delete -an include, this is the place to do it. The includes that are not -needed outside libpng are protected by the PNG_INTERNAL definition, -which is only defined for those routines inside libpng itself. The -files in libpng proper only include png.h, which includes pngconf.h. +All includes for libpng are in pngconf.h. If you need to add, change +or delete an include, this is the place to do it. +The includes that are not needed outside libpng are protected by the +PNG_INTERNAL definition, which is only defined for those routines inside +libpng itself. The files in libpng proper only include png.h, which +includes pngconf.h. .SS Configuring zlib: @@ -3477,7 +3491,7 @@ currently does not allocate the filter buffers until png_write_row() is called for the first time.) filters = PNG_FILTER_NONE | PNG_FILTER_SUB - PNG_FILTER_UP | PNG_FILTER_AVE | + PNG_FILTER_UP | PNG_FILTER_AVG | PNG_FILTER_PAETH | PNG_ALL_FILTERS; png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE, @@ -3599,7 +3613,7 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements having level = 0 will be printed. There aren't any such statements in this version of libpng, but if you insert some they will be printed. -.SH VII. MNG support +.SH VI. MNG support The MNG specification (available at http://www.libpng.org/pub/mng) allows certain extensions to PNG for PNG images that are embedded in MNG datastreams. @@ -3624,7 +3638,7 @@ or any other MNG chunks; your application must provide its own support for them. You may wish to consider using libmng (available at http://www.libmng.com) instead. -.SH VIII. Changes to Libpng from version 0.88 +.SH VII. Changes to Libpng from version 0.88 It should be noted that versions of libpng later than 0.96 are not distributed by the original libpng author, Guy Schalnat, nor by @@ -3673,15 +3687,194 @@ application: png_uint_32 application_vn = PNG_LIBPNG_VER; -.SH IX. Y2K Compliance in libpng +.SH VIII. Changes to Libpng from version 1.0.x to 1.2.x + +Support for user memory management was enabled by default. To +accomplish this, the functions png_create_read_struct_2(), +png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(), +png_malloc_default(), and png_free_default() were added. + +Support for certain MNG features was enabled. + +Support for numbered error messages was added. However, we never got +around to actually numbering the error messages. The function +png_set_strip_error_numbers() was added (Note: the prototype for this +function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE +builds of libpng-1.2.15. It was restored in libpng-1.2.36). + +The png_malloc_warn() function was added at libpng-1.2.3. This issues +a png_warning and returns NULL instead of aborting when it fails to +acquire the requested memory allocation. + +Support for setting user limits on image width and height was enabled +by default. The functions png_set_user_limits(), png_get_user_width_max(), +and png_get_user_height_max() were added at libpng-1.2.6. + +The png_set_add_alpha() function was added at libpng-1.2.7. -February 14, 2009 +The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9. +Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the +tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is +deprecated. + +A number of macro definitions in support of runtime selection of +assembler code features (especially Intel MMX code support) were +added at libpng-1.2.0: + + PNG_ASM_FLAG_MMX_SUPPORT_COMPILED + PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU + PNG_ASM_FLAG_MMX_READ_COMBINE_ROW + PNG_ASM_FLAG_MMX_READ_INTERLACE + PNG_ASM_FLAG_MMX_READ_FILTER_SUB + PNG_ASM_FLAG_MMX_READ_FILTER_UP + PNG_ASM_FLAG_MMX_READ_FILTER_AVG + PNG_ASM_FLAG_MMX_READ_FILTER_PAETH + PNG_ASM_FLAGS_INITIALIZED + PNG_MMX_READ_FLAGS + PNG_MMX_FLAGS + PNG_MMX_WRITE_FLAGS + PNG_MMX_FLAGS + +We added the following functions in support of runtime +selection of assembler code features: + + png_get_mmx_flagmask() + png_set_mmx_thresholds() + png_get_asm_flags() + png_get_mmx_bitdepth_threshold() + png_get_mmx_rowbytes_threshold() + png_set_asm_flags() + +We replaced all of these functions with simple stubs in libpng-1.2.20, +when the Intel assembler code was removed due to a licensing issue. + +.SH IX. (Omitted) + +.SH X. Detecting libpng + +The png_get_io_ptr() function has been present since libpng-0.88, has never +changed, and is unaffected by conditional compilation macros. It is the +best choice for use in configure scripts for detecting the presence of any +libpng version since 0.88. + +.SH XI. Source code repository + +Since about February 2009, version 1.2.34, libpng has been under "git" source +control. The git repository was built from old libpng-x.y.z.tar.gz files +going back to version 0.70. You can access the git repository (read only) +at + + git://libpng.git.sourceforge.net/gitroot/libpng + +or you can browse it via "gitweb" at + + http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng + +Patches can be sent to glennrp at users.sourceforge.net or to +png-mng-implement at lists.sourceforge.net or you can upload them to +the libpng bug tracker at + + http://libpng.sourceforge.net + +.SH XII. Coding style + +Our coding style is similar to the "Allman" style, with curly +braces on separate lines: + + if (condition) + { + action; + } + + else if (another condition) + { + another action; + } + +The braces can be omitted from simple one-line actions: + + if (condition) + return (0); + +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. + +Comments appear with the leading "/*" at the same indentation as +the statement that follows the comment: + + /* Single-line comment */ + statement; + + /* Multiple-line + * comment + */ + statement; + +Very short comments can be placed at the end of the statement +to which they pertain: + + statement; /* comment */ + +We don't use C++ style ("//") comments. We have, however, +used them in the past in some now-abandoned MMX assembler +code. + +Functions and their curly braces are not indented, and +exported functions are marked with PNGAPI: + + /* This is a public function that is visible to + * application programers. It does thus-and-so. + */ + void PNGAPI + png_exported_function(png_ptr, png_info, foo) + { + body; + } + +The prototypes for all exported functions appear in png.h. + +We mark all non-exported functions with "/* PRIVATE */"": + + void /* PRIVATE */ + png_non_exported_function(png_ptr, png_info, foo) + { + body; + } + +The prototypes for non-exported functions can appear in +the PNG_INTERNAL section of png.h +or in the file where the function is located. + +The names of all exported functions and variables begin +with "png_", and all publicly visible C preprocessor +macros begin with "PNG_". + +We put a space after each comma and after each semicolon +in "for" statments, and we put spaces before and after each +C binary operator and after "for" or "while". We don't +put a space between a typecast and the expression being +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; + +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. + +.SH XIII. Y2K Compliance in libpng + +July 16, 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 1.2.35 are Y2K compliant. It is my belief that earlier +upward through 1.2.38 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 @@ -3943,6 +4136,19 @@ the first widely used release: 1.2.35rc01-02 13 10235 12.so.0.35[.0] 1.0.43 10 10043 10.so.0.43[.0] 1.2.35 13 10235 12.so.0.35[.0] + 1.2.36beta01-05 13 10236 12.so.0.36[.0] + 1.2.36rc01 13 10236 12.so.0.36[.0] + 1.0.44 10 10044 10.so.0.44[.0] + 1.2.36 13 10236 12.so.0.36[.0] + 1.2.37beta01-03 13 10237 12.so.0.37[.0] + 1.2.37rc01 13 10237 12.so.0.37[.0] + 1.2.37 13 10237 12.so.0.37[.0] + 1.2.45 10 10045 12.so.0.45[.0] + 1.0.46 10 10046 10.so.0.46[.0] + 1.2.38beta01 13 10238 12.so.0.38[.0] + 1.2.38rc01-03 13 10238 12.so.0.38[.0] + 1.0.47 10 10047 10.so.0.47[.0] + 1.2.38 13 10238 12.so.0.38[.0] Henceforth the source version will match the shared-library minor and patch numbers; the shared-library major version number will be @@ -3998,7 +4204,7 @@ possible without all of you. Thanks to Frank J. T. Wojcik for helping with the documentation. -Libpng version 1.2.35 - February 14, 2009: +Libpng version 1.2.38 - July 16, 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). @@ -4019,7 +4225,9 @@ included in the libpng distribution, the latter shall prevail.) If you modify libpng you may insert additional notices immediately following this sentence. -libpng versions 1.2.6, August 15, 2004, through 1.2.35, February 14, 2009, are +This code is released under the libpng license. + +libpng versions 1.2.6, August 15, 2004, through 1.2.38, July 16, 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 @@ -4118,7 +4326,7 @@ certification mark of the Open Source Initiative. Glenn Randers-Pehrson glennrp at users.sourceforge.net -February 14, 2009 +July 16, 2009 .\" end of man page @@ -1,6 +1,6 @@ -.TH LIBPNGPF 3 "February 14, 2009" +.TH LIBPNGPF 3 "July 16, 2009" .SH NAME -libpng \- Portable Network Graphics (PNG) Reference Library 1.2.35 +libpng \- Portable Network Graphics (PNG) Reference Library 1.2.38 (private functions) .SH SYNOPSIS \fB#include <png.h>\fP @@ -1,4 +1,4 @@ -.TH PNG 5 "February 14, 2009" +.TH PNG 5 "July 16, 2009" .SH NAME png \- Portable Network Graphics (PNG) format .SH DESCRIPTION @@ -1,11 +1,14 @@ /* png.c - location for general purpose libpng functions * - * Last changed in libpng 1.2.34 [December 18, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [June 4, 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.) + * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h */ #define PNG_INTERNAL @@ -13,7 +16,7 @@ #include "png.h" /* Generate a compiler error if there is an old png.h in the search path. */ -typedef version_1_2_35 Your_png_h_is_not_version_1_2_35; +typedef version_1_2_38 Your_png_h_is_not_version_1_2_38; /* Version information for C files. This had better match the version * string defined in png.h. */ @@ -53,18 +56,18 @@ PNG_tRNS; PNG_zTXt; #ifdef PNG_READ_SUPPORTED -/* arrays to facilitate easy interlacing - use pass (0 - 6) as index */ +/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ -/* start of interlace block */ +/* Start of interlace block */ PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0}; -/* offset to next interlace block */ +/* Offset to next interlace block */ PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1}; -/* start of interlace block in the y direction */ +/* Start of interlace block in the y direction */ PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1}; -/* offset to next interlace block in the y direction */ +/* Offset to next interlace block in the y direction */ PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2}; /* Height of interlace block. This is not currently used - if you need @@ -92,7 +95,8 @@ PNG_CONST int FARDATA png_pass_dsp_mask[] void PNGAPI png_set_sig_bytes(png_structp png_ptr, int num_bytes) { - if (png_ptr == NULL) return; + 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."); @@ -153,7 +157,8 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size) png_uint_32 save_flags=p->flags; png_uint_32 num_bytes; - if (png_ptr == NULL) return (NULL); + if (png_ptr == NULL) + return (NULL); if (items > PNG_UINT_32_MAX/size) { png_warning (p, "Potential overflow in png_zalloc()"); @@ -183,7 +188,7 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size) return ((voidpf)ptr); } -/* function to free memory for zlib */ +/* Function to free memory for zlib */ #ifdef PNG_1_0_X void PNGAPI #else @@ -241,7 +246,8 @@ 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); + 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); @@ -263,7 +269,8 @@ void PNGAPI png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr) { png_infop info_ptr = NULL; - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_debug(1, "in png_destroy_info_struct"); if (info_ptr_ptr != NULL) @@ -302,18 +309,19 @@ png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size) { png_infop info_ptr = *ptr_ptr; - if (info_ptr == NULL) return; + 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); - info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO); - *ptr_ptr = info_ptr; - } + { + png_destroy_struct(info_ptr); + info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO); + *ptr_ptr = info_ptr; + } - /* set everything to 0 */ + /* Set everything to 0 */ png_memset(info_ptr, 0, png_sizeof(png_info)); } @@ -344,245 +352,245 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask, return; #if defined(PNG_TEXT_SUPPORTED) -/* free text item num or (if num == -1) all text items */ + /* 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) + if ((mask & PNG_FREE_TEXT) & info_ptr->free_me) #else -if (mask & PNG_FREE_TEXT) + if (mask & PNG_FREE_TEXT) #endif -{ - if (num != -1) { - if (info_ptr->text && info_ptr->text[num].key) - { - png_free(png_ptr, info_ptr->text[num].key); - info_ptr->text[num].key = NULL; - } - } - else - { - int i; - for (i = 0; i < info_ptr->num_text; i++) - png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i); - png_free(png_ptr, info_ptr->text); - info_ptr->text = NULL; - info_ptr->num_text=0; + if (num != -1) + { + if (info_ptr->text && info_ptr->text[num].key) + { + png_free(png_ptr, info_ptr->text[num].key); + info_ptr->text[num].key = NULL; + } + } + else + { + int i; + for (i = 0; i < info_ptr->num_text; i++) + png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i); + png_free(png_ptr, info_ptr->text); + info_ptr->text = NULL; + info_ptr->num_text=0; + } } -} #endif #if defined(PNG_tRNS_SUPPORTED) -/* free any tRNS entry */ + /* Free any tRNS entry */ #ifdef PNG_FREE_ME_SUPPORTED -if ((mask & PNG_FREE_TRNS) & info_ptr->free_me) + if ((mask & PNG_FREE_TRNS) & info_ptr->free_me) #else -if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS)) + if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS)) #endif -{ - png_free(png_ptr, info_ptr->trans); - info_ptr->trans = NULL; - info_ptr->valid &= ~PNG_INFO_tRNS; + { + png_free(png_ptr, info_ptr->trans); + info_ptr->trans = NULL; + info_ptr->valid &= ~PNG_INFO_tRNS; #ifndef PNG_FREE_ME_SUPPORTED - png_ptr->flags &= ~PNG_FLAG_FREE_TRNS; + png_ptr->flags &= ~PNG_FLAG_FREE_TRNS; #endif -} + } #endif #if defined(PNG_sCAL_SUPPORTED) -/* free any sCAL entry */ + /* Free any sCAL entry */ #ifdef PNG_FREE_ME_SUPPORTED -if ((mask & PNG_FREE_SCAL) & info_ptr->free_me) + if ((mask & PNG_FREE_SCAL) & info_ptr->free_me) #else -if (mask & PNG_FREE_SCAL) + if (mask & PNG_FREE_SCAL) #endif -{ + { #if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED) - png_free(png_ptr, info_ptr->scal_s_width); - png_free(png_ptr, info_ptr->scal_s_height); - info_ptr->scal_s_width = NULL; - info_ptr->scal_s_height = NULL; + png_free(png_ptr, info_ptr->scal_s_width); + png_free(png_ptr, info_ptr->scal_s_height); + info_ptr->scal_s_width = NULL; + info_ptr->scal_s_height = NULL; #endif - info_ptr->valid &= ~PNG_INFO_sCAL; -} + info_ptr->valid &= ~PNG_INFO_sCAL; + } #endif #if defined(PNG_pCAL_SUPPORTED) -/* free any pCAL entry */ + /* Free any pCAL entry */ #ifdef PNG_FREE_ME_SUPPORTED -if ((mask & PNG_FREE_PCAL) & info_ptr->free_me) + if ((mask & PNG_FREE_PCAL) & info_ptr->free_me) #else -if (mask & PNG_FREE_PCAL) + if (mask & PNG_FREE_PCAL) #endif -{ - png_free(png_ptr, info_ptr->pcal_purpose); - png_free(png_ptr, info_ptr->pcal_units); - info_ptr->pcal_purpose = NULL; - info_ptr->pcal_units = NULL; - if (info_ptr->pcal_params != NULL) - { - int i; - for (i = 0; i < (int)info_ptr->pcal_nparams; i++) - { - png_free(png_ptr, info_ptr->pcal_params[i]); - info_ptr->pcal_params[i]=NULL; - } - png_free(png_ptr, info_ptr->pcal_params); - info_ptr->pcal_params = NULL; - } - info_ptr->valid &= ~PNG_INFO_pCAL; -} + { + png_free(png_ptr, info_ptr->pcal_purpose); + png_free(png_ptr, info_ptr->pcal_units); + info_ptr->pcal_purpose = NULL; + info_ptr->pcal_units = NULL; + if (info_ptr->pcal_params != NULL) + { + int i; + for (i = 0; i < (int)info_ptr->pcal_nparams; i++) + { + png_free(png_ptr, info_ptr->pcal_params[i]); + info_ptr->pcal_params[i]=NULL; + } + png_free(png_ptr, info_ptr->pcal_params); + info_ptr->pcal_params = NULL; + } + info_ptr->valid &= ~PNG_INFO_pCAL; + } #endif #if defined(PNG_iCCP_SUPPORTED) -/* free any iCCP entry */ + /* Free any iCCP entry */ #ifdef PNG_FREE_ME_SUPPORTED -if ((mask & PNG_FREE_ICCP) & info_ptr->free_me) + if ((mask & PNG_FREE_ICCP) & info_ptr->free_me) #else -if (mask & PNG_FREE_ICCP) + if (mask & PNG_FREE_ICCP) #endif -{ - png_free(png_ptr, info_ptr->iccp_name); - png_free(png_ptr, info_ptr->iccp_profile); - info_ptr->iccp_name = NULL; - info_ptr->iccp_profile = NULL; - info_ptr->valid &= ~PNG_INFO_iCCP; -} + { + png_free(png_ptr, info_ptr->iccp_name); + png_free(png_ptr, info_ptr->iccp_profile); + info_ptr->iccp_name = NULL; + info_ptr->iccp_profile = NULL; + info_ptr->valid &= ~PNG_INFO_iCCP; + } #endif #if defined(PNG_sPLT_SUPPORTED) -/* free a given sPLT entry, or (if num == -1) all sPLT entries */ + /* 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) + if ((mask & PNG_FREE_SPLT) & info_ptr->free_me) #else -if (mask & PNG_FREE_SPLT) + if (mask & PNG_FREE_SPLT) #endif -{ - if (num != -1) { - if (info_ptr->splt_palettes) + if (num != -1) { - png_free(png_ptr, info_ptr->splt_palettes[num].name); - png_free(png_ptr, info_ptr->splt_palettes[num].entries); - info_ptr->splt_palettes[num].name = NULL; - info_ptr->splt_palettes[num].entries = NULL; + if (info_ptr->splt_palettes) + { + png_free(png_ptr, info_ptr->splt_palettes[num].name); + png_free(png_ptr, info_ptr->splt_palettes[num].entries); + info_ptr->splt_palettes[num].name = NULL; + info_ptr->splt_palettes[num].entries = NULL; + } + } + else + { + if (info_ptr->splt_palettes_num) + { + int i; + for (i = 0; i < (int)info_ptr->splt_palettes_num; i++) + png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i); + + png_free(png_ptr, info_ptr->splt_palettes); + info_ptr->splt_palettes = NULL; + info_ptr->splt_palettes_num = 0; + } + info_ptr->valid &= ~PNG_INFO_sPLT; } } - else - { - if (info_ptr->splt_palettes_num) - { - int i; - for (i = 0; i < (int)info_ptr->splt_palettes_num; i++) - png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i); - - png_free(png_ptr, info_ptr->splt_palettes); - info_ptr->splt_palettes = NULL; - info_ptr->splt_palettes_num = 0; - } - info_ptr->valid &= ~PNG_INFO_sPLT; - } -} #endif #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) - if (png_ptr->unknown_chunk.data) - { - png_free(png_ptr, png_ptr->unknown_chunk.data); - png_ptr->unknown_chunk.data = NULL; - } + if (png_ptr->unknown_chunk.data) + { + png_free(png_ptr, png_ptr->unknown_chunk.data); + png_ptr->unknown_chunk.data = NULL; + } #ifdef PNG_FREE_ME_SUPPORTED -if ((mask & PNG_FREE_UNKN) & info_ptr->free_me) + if ((mask & PNG_FREE_UNKN) & info_ptr->free_me) #else -if (mask & PNG_FREE_UNKN) + if (mask & PNG_FREE_UNKN) #endif -{ - if (num != -1) { - if (info_ptr->unknown_chunks) - { - png_free(png_ptr, info_ptr->unknown_chunks[num].data); - info_ptr->unknown_chunks[num].data = NULL; - } - } - else - { - int i; + if (num != -1) + { + if (info_ptr->unknown_chunks) + { + png_free(png_ptr, info_ptr->unknown_chunks[num].data); + info_ptr->unknown_chunks[num].data = NULL; + } + } + else + { + int i; - if (info_ptr->unknown_chunks_num) - { - for (i = 0; i < (int)info_ptr->unknown_chunks_num; i++) - png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i); + if (info_ptr->unknown_chunks_num) + { + for (i = 0; i < (int)info_ptr->unknown_chunks_num; i++) + png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i); - png_free(png_ptr, info_ptr->unknown_chunks); - info_ptr->unknown_chunks = NULL; - info_ptr->unknown_chunks_num = 0; - } + png_free(png_ptr, info_ptr->unknown_chunks); + info_ptr->unknown_chunks = NULL; + info_ptr->unknown_chunks_num = 0; + } + } } -} #endif #if defined(PNG_hIST_SUPPORTED) -/* free any hIST entry */ + /* Free any hIST entry */ #ifdef PNG_FREE_ME_SUPPORTED -if ((mask & PNG_FREE_HIST) & info_ptr->free_me) + if ((mask & PNG_FREE_HIST) & info_ptr->free_me) #else -if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST)) + if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST)) #endif -{ - png_free(png_ptr, info_ptr->hist); - info_ptr->hist = NULL; - info_ptr->valid &= ~PNG_INFO_hIST; + { + png_free(png_ptr, info_ptr->hist); + info_ptr->hist = NULL; + info_ptr->valid &= ~PNG_INFO_hIST; #ifndef PNG_FREE_ME_SUPPORTED - png_ptr->flags &= ~PNG_FLAG_FREE_HIST; + png_ptr->flags &= ~PNG_FLAG_FREE_HIST; #endif -} + } #endif -/* free any PLTE entry that was internally allocated */ + /* Free any PLTE entry that was internally allocated */ #ifdef PNG_FREE_ME_SUPPORTED -if ((mask & PNG_FREE_PLTE) & info_ptr->free_me) + if ((mask & PNG_FREE_PLTE) & info_ptr->free_me) #else -if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE)) + if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE)) #endif -{ - png_zfree(png_ptr, info_ptr->palette); - info_ptr->palette = NULL; - info_ptr->valid &= ~PNG_INFO_PLTE; + { + png_zfree(png_ptr, info_ptr->palette); + info_ptr->palette = NULL; + info_ptr->valid &= ~PNG_INFO_PLTE; #ifndef PNG_FREE_ME_SUPPORTED - png_ptr->flags &= ~PNG_FLAG_FREE_PLTE; + png_ptr->flags &= ~PNG_FLAG_FREE_PLTE; #endif - info_ptr->num_palette = 0; -} + info_ptr->num_palette = 0; + } #if defined(PNG_INFO_IMAGE_SUPPORTED) -/* free any image bits attached to the info structure */ + /* Free any image bits attached to the info structure */ #ifdef PNG_FREE_ME_SUPPORTED -if ((mask & PNG_FREE_ROWS) & info_ptr->free_me) + if ((mask & PNG_FREE_ROWS) & info_ptr->free_me) #else -if (mask & PNG_FREE_ROWS) + if (mask & PNG_FREE_ROWS) #endif -{ - if (info_ptr->row_pointers) - { - int row; - for (row = 0; row < (int)info_ptr->height; row++) - { - png_free(png_ptr, info_ptr->row_pointers[row]); - info_ptr->row_pointers[row]=NULL; - } - png_free(png_ptr, info_ptr->row_pointers); - info_ptr->row_pointers=NULL; - } - info_ptr->valid &= ~PNG_INFO_IDAT; -} + { + if (info_ptr->row_pointers) + { + int row; + for (row = 0; row < (int)info_ptr->height; row++) + { + png_free(png_ptr, info_ptr->row_pointers[row]); + info_ptr->row_pointers[row]=NULL; + } + png_free(png_ptr, info_ptr->row_pointers); + info_ptr->row_pointers=NULL; + } + info_ptr->valid &= ~PNG_INFO_IDAT; + } #endif #ifdef PNG_FREE_ME_SUPPORTED if (num == -1) - info_ptr->free_me &= ~mask; + info_ptr->free_me &= ~mask; else - info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL); + info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL); #endif } @@ -597,12 +605,12 @@ 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_UNKNOWN_CHUNKS_SUPPORTED) +#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) if (png_ptr->num_chunk_list) { - png_free(png_ptr, png_ptr->chunk_list); - png_ptr->chunk_list=NULL; - png_ptr->num_chunk_list = 0; + png_free(png_ptr, png_ptr->chunk_list); + png_ptr->chunk_list=NULL; + png_ptr->num_chunk_list = 0; } #endif @@ -617,7 +625,8 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr) png_voidp PNGAPI png_get_io_ptr(png_structp png_ptr) { - if (png_ptr == NULL) return (NULL); + if (png_ptr == NULL) + return (NULL); return (png_ptr->io_ptr); } @@ -633,7 +642,8 @@ 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; + if (png_ptr == NULL) + return; png_ptr->io_ptr = (png_voidp)fp; } #endif @@ -649,7 +659,8 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime) {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; - if (png_ptr == NULL) return (NULL); + if (png_ptr == NULL) + return (NULL); if (png_ptr->time_buffer == NULL) { png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, (png_uint_32)(29* @@ -693,9 +704,9 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime) 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 1.2.35 - February 14, 2009\n\ - Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\ + png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ + return ((png_charp) "\n libpng version 1.2.38 - July 16, 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"); } @@ -712,7 +723,7 @@ png_charp PNGAPI png_get_libpng_ver(png_structp png_ptr) { /* Version of *.c files used when building libpng */ - png_ptr = png_ptr; /* silence compiler warning about unused png_ptr */ + png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ return ((png_charp) PNG_LIBPNG_VER_STRING); } @@ -720,7 +731,7 @@ png_charp PNGAPI png_get_header_ver(png_structp png_ptr) { /* Version of *.h files used when building libpng */ - png_ptr = png_ptr; /* silence compiler warning about unused png_ptr */ + png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ return ((png_charp) PNG_LIBPNG_VER_STRING); } @@ -728,7 +739,7 @@ png_charp PNGAPI 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 */ + png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ return ((png_charp) PNG_HEADER_VERSION_STRING #ifndef PNG_READ_SUPPORTED " (NO READ SUPPORT)" @@ -741,7 +752,7 @@ png_get_header_version(png_structp png_ptr) int PNGAPI png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name) { - /* check chunk_name and return "keep" value if it's on the list, else 0 */ + /* Check chunk_name and return "keep" value if it's on the list, else 0 */ int i; png_bytep p; if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list<=0) @@ -758,7 +769,8 @@ png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name) int PNGAPI png_reset_zstream(png_structp png_ptr) { - if (png_ptr == NULL) return Z_STREAM_ERROR; + if (png_ptr == NULL) + return Z_STREAM_ERROR; return (inflateReset(&png_ptr->zstream)); } #endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */ @@ -774,11 +786,11 @@ png_access_version_number(void) #if defined(PNG_READ_SUPPORTED) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) #if !defined(PNG_1_0_X) -/* this function was added to libpng 1.2.0 */ +/* This function was added to libpng 1.2.0 */ int PNGAPI png_mmx_support(void) { - /* obsolete, to be removed from libpng-1.4.0 */ + /* Obsolete, to be removed from libpng-1.4.0 */ return -1; } #endif /* PNG_1_0_X */ @@ -791,53 +803,55 @@ png_mmx_support(void) png_size_t PNGAPI png_convert_size(size_t size) { - if (size > (png_size_t)-1) - PNG_ABORT(); /* We haven't got access to png_ptr, so no png_error() */ - return ((png_size_t)size); + if (size > (png_size_t)-1) + PNG_ABORT(); /* We haven't got access to png_ptr, so no png_error() */ + return ((png_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) + /* - Multiply two 32-bit numbers, V1 and V2, using 32-bit - arithmetic, to produce a 64 bit result in the HI/LO words. - - A B - x C D - ------ - AD || BD -AC || CB || 0 - - where A and B are the high and low 16-bit words of V1, - C and D are the 16-bit words of V2, AD is the product of - A and D, and X || Y is (X << 16) + Y. + * Multiply two 32-bit numbers, V1 and V2, using 32-bit + * arithmetic, to produce a 64 bit result in the HI/LO words. + * + * A B + * x C D + * ------ + * AD || BD + * AC || CB || 0 + * + * where A and B are the high and low 16-bit words of V1, + * C and D are the 16-bit words of V2, AD is the product of + * A and D, and X || Y is (X << 16) + Y. */ void png_64bit_product (long v1, long v2, unsigned long *hi_product, unsigned long *lo_product) { - int a, b, c, d; - long lo, hi, x, y; + int a, b, c, d; + long lo, hi, x, y; - a = (v1 >> 16) & 0xffff; - b = v1 & 0xffff; - c = (v2 >> 16) & 0xffff; - d = v2 & 0xffff; + a = (v1 >> 16) & 0xffff; + b = v1 & 0xffff; + c = (v2 >> 16) & 0xffff; + d = v2 & 0xffff; - lo = b * d; /* BD */ - x = a * d + c * b; /* AD + CB */ - y = ((lo >> 16) & 0xffff) + x; + lo = b * d; /* BD */ + x = a * d + c * b; /* AD + CB */ + y = ((lo >> 16) & 0xffff) + x; - lo = (lo & 0xffff) | ((y & 0xffff) << 16); - hi = (y >> 16) & 0xffff; + lo = (lo & 0xffff) | ((y & 0xffff) << 16); + hi = (y >> 16) & 0xffff; - hi += a * c; /* AC */ + hi += a * c; /* AC */ - *hi_product = (unsigned long)hi; - *lo_product = (unsigned long)lo; + *hi_product = (unsigned long)hi; + *lo_product = (unsigned long)lo; } + int /* private */ png_check_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, @@ -1,14 +1,16 @@ /* png.h - header file for PNG reference library * - * libpng version 1.2.35 - February 14, 2009 + * libpng version 1.2.38 - July 16, 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.) * + * This code is released under the libpng license (See LICENSE, below) + * * Authors and maintainers: * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger - * libpng versions 0.97, January 1998, through 1.2.35 - February 14, 2009: Glenn + * libpng versions 0.97, January 1998, through 1.2.38 - July 16, 2009: Glenn * See also "Contributing Authors", below. * * Note about libpng version numbers: @@ -222,6 +224,19 @@ * 1.2.35rc01-02 13 10235 12.so.0.35[.0] * 1.0.43 10 10043 10.so.0.43[.0] * 1.2.35 13 10235 12.so.0.35[.0] + * 1.2.36beta01-05 13 10236 12.so.0.36[.0] + * 1.2.36rc01 13 10236 12.so.0.36[.0] + * 1.0.44 10 10044 10.so.0.44[.0] + * 1.2.36 13 10236 12.so.0.36[.0] + * 1.2.37beta01-03 13 10237 12.so.0.37[.0] + * 1.2.37rc01 13 10237 12.so.0.37[.0] + * 1.2.37 13 10237 12.so.0.37[.0] + * 1.2.45 10 10045 12.so.0.45[.0] + * 1.0.46 10 10046 10.so.0.46[.0] + * 1.2.38beta01 13 10238 12.so.0.38[.0] + * 1.2.38rc01-03 13 10238 12.so.0.38[.0] + * 1.0.47 10 10047 10.so.0.47[.0] + * 1.2.38 13 10238 12.so.0.38[.0] * * Henceforth the source version will match the shared-library major * and minor numbers; the shared-library major version number will be @@ -251,8 +266,10 @@ * If you modify libpng you may insert additional notices immediately following * this sentence. * - * libpng versions 1.2.6, August 15, 2004, through 1.2.35, February 14, 2009, are - * Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are + * This code is released under the libpng license. + * + * libpng versions 1.2.6, August 15, 2004, through 1.2.38, July 16, 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: * @@ -363,13 +380,13 @@ * Y2K compliance in libpng: * ========================= * - * February 14, 2009 + * July 16, 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 1.2.35 are Y2K compliant. It is my belief that earlier + * upward through 1.2.38 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 @@ -425,9 +442,9 @@ */ /* Version information for png.h - this should match the version in png.c */ -#define PNG_LIBPNG_VER_STRING "1.2.35" +#define PNG_LIBPNG_VER_STRING "1.2.38" #define PNG_HEADER_VERSION_STRING \ - " libpng version 1.2.35 - February 14, 2009\n" + " libpng version 1.2.38 - July 16, 2009\n" #define PNG_LIBPNG_VER_SONUM 0 #define PNG_LIBPNG_VER_DLLNUM 13 @@ -435,9 +452,10 @@ /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ #define PNG_LIBPNG_VER_MAJOR 1 #define PNG_LIBPNG_VER_MINOR 2 -#define PNG_LIBPNG_VER_RELEASE 35 +#define PNG_LIBPNG_VER_RELEASE 38 /* This should match the numeric part of the final component of - * PNG_LIBPNG_VER_STRING, omitting any leading zero: */ + * PNG_LIBPNG_VER_STRING, omitting any leading zero: + */ #define PNG_LIBPNG_VER_BUILD 0 @@ -447,7 +465,7 @@ #define PNG_LIBPNG_BUILD_RC 3 #define PNG_LIBPNG_BUILD_STABLE 4 #define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7 - + /* Release-Specific Flags */ #define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with PNG_LIBPNG_BUILD_STABLE only */ @@ -462,8 +480,9 @@ * We must not include leading zeros. * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only * version 1.0.0 was mis-numbered 100 instead of 10000). From - * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release */ -#define PNG_LIBPNG_VER 10235 /* 1.2.35 */ + * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release + */ +#define PNG_LIBPNG_VER 10238 /* 1.2.38 */ #ifndef PNG_VERSION_INFO_ONLY /* include the compression library's header */ @@ -478,12 +497,12 @@ /* Ref MSDN: Private as priority over Special * VS_FF_PRIVATEBUILD File *was not* built using standard release * procedures. If this value is given, the StringFileInfo block must - * contain a PrivateBuild string. + * contain a PrivateBuild string. * * VS_FF_SPECIALBUILD File *was* built by the original company using * standard release procedures but is a variation of the standard * file of the same version number. If this value is given, the - * StringFileInfo block must contain a SpecialBuild string. + * StringFileInfo block must contain a SpecialBuild string. */ #if defined(PNG_USER_PRIVATEBUILD) @@ -545,7 +564,7 @@ extern "C" { #define png_write_status_ptr_NULL NULL #endif -/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */ +/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */ #if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN) /* Version information for C files, stored in png.c. This had better match * the version above. @@ -671,7 +690,8 @@ typedef png_text FAR * FAR * png_textpp; #endif /* Supported compression types for text in PNG files (tEXt, and zTXt). - * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. */ + * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. + */ #define PNG_TEXT_COMPRESSION_NONE_WR -3 #define PNG_TEXT_COMPRESSION_zTXt_WR -2 #define PNG_TEXT_COMPRESSION_NONE -1 @@ -698,7 +718,8 @@ typedef struct png_time_struct typedef png_time FAR * png_timep; typedef png_time FAR * FAR * png_timepp; -#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) +#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \ + defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) /* png_unknown_chunk is a structure to hold queued chunks for which there is * no specific support. The idea is that we can use this to queue * up private chunks for output even though the library doesn't actually @@ -933,8 +954,9 @@ defined(PNG_READ_BACKGROUND_SUPPORTED) png_uint_32 free_me; /* flags items libpng is responsible for freeing */ #endif -#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) - /* storage for unknown chunks that the library doesn't recognize. */ +#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \ + defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) + /* Storage for unknown chunks that the library doesn't recognize. */ png_unknown_chunkp unknown_chunks; png_size_t unknown_chunks_num; #endif @@ -949,7 +971,7 @@ defined(PNG_READ_BACKGROUND_SUPPORTED) #endif #if defined(PNG_sPLT_SUPPORTED) - /* data on sPLT chunks (there may be more than one). */ + /* Data on sPLT chunks (there may be more than one). */ png_sPLT_tp splt_palettes; png_uint_32 splt_palettes_num; #endif @@ -1284,7 +1306,7 @@ struct png_struct_def #endif /* PNG_bKGD_SUPPORTED */ #if defined(PNG_WRITE_FLUSH_SUPPORTED) - png_flush_ptr output_flush_fn;/* Function for flushing output */ + png_flush_ptr output_flush_fn; /* Function for flushing output */ png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */ png_uint_32 flush_rows; /* number of rows written since last flush */ #endif @@ -1382,7 +1404,7 @@ struct png_struct_def /* New members added in libpng-1.0.6 */ #ifdef PNG_FREE_ME_SUPPORTED - png_uint_32 free_me; /* flags items libpng is responsible for freeing */ + png_uint_32 free_me; /* flags items libpng is responsible for freeing */ #endif #if defined(PNG_USER_CHUNKS_SUPPORTED) @@ -1390,7 +1412,7 @@ struct png_struct_def png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */ #endif -#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) +#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED int num_chunk_list; png_bytep chunk_list; #endif @@ -1444,21 +1466,21 @@ struct png_struct_def /* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */ #ifdef PNG_USER_MEM_SUPPORTED - png_voidp mem_ptr; /* user supplied struct for mem functions */ - png_malloc_ptr malloc_fn; /* function for allocating memory */ - png_free_ptr free_fn; /* function for freeing memory */ + png_voidp mem_ptr; /* user supplied struct for mem functions */ + png_malloc_ptr malloc_fn; /* function for allocating memory */ + png_free_ptr free_fn; /* function for freeing memory */ #endif /* New member added in libpng-1.0.13 and 1.2.0 */ - png_bytep big_row_buf; /* buffer to save current (unfiltered) row */ + png_bytep big_row_buf; /* buffer to save current (unfiltered) row */ #if defined(PNG_READ_DITHER_SUPPORTED) /* The following three members were added at version 1.0.14 and 1.2.4 */ - png_bytep dither_sort; /* working sort array */ - png_bytep index_to_palette; /* where the original index currently is */ - /* in the palette */ - png_bytep palette_to_index; /* which original index points to this */ - /* palette color */ + png_bytep dither_sort; /* working sort array */ + png_bytep index_to_palette; /* where the original index currently is */ + /* in the palette */ + png_bytep palette_to_index; /* which original index points to this */ + /* palette color */ #endif /* New members added in libpng-1.0.16 and 1.2.6 */ @@ -1471,7 +1493,7 @@ struct png_struct_def /* New member added in libpng-1.0.25 and 1.2.17 */ #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) - /* storage for unknown chunk that the library doesn't recognize. */ + /* Storage for unknown chunk that the library doesn't recognize. */ png_unknown_chunk unknown_chunk; #endif @@ -1487,7 +1509,7 @@ struct png_struct_def /* This triggers a compiler error in png.c, if png.c and png.h * do not agree upon the version number. */ -typedef png_structp version_1_2_35; +typedef png_structp version_1_2_38; typedef png_struct FAR * FAR * png_structpp; @@ -1591,7 +1613,7 @@ extern PNG_EXPORT(void,png_write_info) PNGARG((png_structp png_ptr, png_infop info_ptr)); #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED -/* read the information before the actual image data. */ +/* Read the information before the actual image data. */ extern PNG_EXPORT(void,png_read_info) PNGARG((png_structp png_ptr, png_infop info_ptr)); #endif @@ -1604,11 +1626,11 @@ extern PNG_EXPORT(png_charp,png_convert_to_rfc1123) #if !defined(_WIN32_WCE) /* "time.h" functions are not supported on WindowsCE */ #if defined(PNG_WRITE_tIME_SUPPORTED) -/* convert from a struct tm to png_time */ +/* Convert from a struct tm to png_time */ extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime, struct tm FAR * ttime)); -/* convert from time_t to png_time. Uses gmtime() */ +/* Convert from time_t to png_time. Uses gmtime() */ extern PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime, time_t ttime)); #endif /* PNG_WRITE_tIME_SUPPORTED */ @@ -1728,7 +1750,7 @@ extern PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr, #endif #if defined(PNG_READ_16_TO_8_SUPPORTED) -/* strip the second byte of information from a 16-bit depth file. */ +/* Strip the second byte of information from a 16-bit depth file. */ extern PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr)); #endif @@ -1764,74 +1786,74 @@ extern PNG_EXPORT(void,png_set_flush) PNGARG((png_structp png_ptr, int nrows)); extern PNG_EXPORT(void,png_write_flush) PNGARG((png_structp png_ptr)); #endif -/* optional update palette with requested transformations */ +/* Optional update palette with requested transformations */ extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr)); -/* optional call to update the users info structure */ +/* Optional call to update the users info structure */ extern PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr, png_infop info_ptr)); #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED -/* read one or more rows of image data. */ +/* Read one or more rows of image data. */ extern PNG_EXPORT(void,png_read_rows) PNGARG((png_structp png_ptr, png_bytepp row, png_bytepp display_row, png_uint_32 num_rows)); #endif #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED -/* read a row of data. */ +/* Read a row of data. */ extern PNG_EXPORT(void,png_read_row) PNGARG((png_structp png_ptr, png_bytep row, png_bytep display_row)); #endif #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED -/* read the whole image into memory at once. */ +/* Read the whole image into memory at once. */ extern PNG_EXPORT(void,png_read_image) PNGARG((png_structp png_ptr, png_bytepp image)); #endif -/* write a row of image data */ +/* Write a row of image data */ extern PNG_EXPORT(void,png_write_row) PNGARG((png_structp png_ptr, png_bytep row)); -/* write a few rows of image data */ +/* Write a few rows of image data */ extern PNG_EXPORT(void,png_write_rows) PNGARG((png_structp png_ptr, png_bytepp row, png_uint_32 num_rows)); -/* write the image data */ +/* Write the image data */ extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr, png_bytepp image)); -/* writes the end of the PNG file. */ +/* Writes the end of the PNG file. */ extern PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr, png_infop info_ptr)); #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED -/* read the end of the PNG file. */ +/* Read the end of the PNG file. */ extern PNG_EXPORT(void,png_read_end) PNGARG((png_structp png_ptr, png_infop info_ptr)); #endif -/* free any memory associated with the png_info_struct */ +/* Free any memory associated with the png_info_struct */ extern PNG_EXPORT(void,png_destroy_info_struct) PNGARG((png_structp png_ptr, png_infopp info_ptr_ptr)); -/* free any memory associated with the png_struct and the png_info_structs */ +/* Free any memory associated with the png_struct and the png_info_structs */ extern PNG_EXPORT(void,png_destroy_read_struct) PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr)); -/* free all memory used by the read (old method - NOT DLL EXPORTED) */ +/* Free all memory used by the read (old method - NOT DLL EXPORTED) */ extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr)); -/* free any memory associated with the png_struct and the png_info_structs */ +/* Free any memory associated with the png_struct and the png_info_structs */ extern PNG_EXPORT(void,png_destroy_write_struct) PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)); -/* free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */ +/* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */ extern void png_write_destroy PNGARG((png_structp png_ptr)); -/* set the libpng method of handling chunk CRC errors */ +/* Set the libpng method of handling chunk CRC errors */ extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr, int crit_action, int ancil_action)); @@ -1859,7 +1881,7 @@ extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr, * header file (zlib.h) for an explination of the compression functions. */ -/* set the filtering method(s) used by libpng. Currently, the only valid +/* Set the filtering method(s) used by libpng. Currently, the only valid * value for "method" is 0. */ extern PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method, @@ -1987,6 +2009,11 @@ extern PNG_EXPORT(png_voidp,png_get_error_ptr) PNGARG((png_structp png_ptr)); * If buffered output is not used, then output_flush_fn can be set to NULL. * If PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile time * output_flush_fn will be ignored (and thus can be NULL). + * It is probably a mistake to use NULL for output_flush_fn if + * write_data_fn is not also NULL unless you have built libpng with + * PNG_WRITE_FLUSH_SUPPORTED undefined, because in this case libpng's + * default flush function, which uses the standard *FILE structure, will + * be used. */ extern PNG_EXPORT(void,png_set_write_fn) PNGARG((png_structp png_ptr, png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)); @@ -2051,11 +2078,11 @@ extern PNG_EXPORT(void,png_set_progressive_read_fn) PNGARG((png_structp png_ptr, png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn, png_progressive_end_ptr end_fn)); -/* returns the user pointer associated with the push read functions */ +/* Returns the user pointer associated with the push read functions */ extern PNG_EXPORT(png_voidp,png_get_progressive_ptr) PNGARG((png_structp png_ptr)); -/* function to be called when data becomes available */ +/* Function to be called when data becomes available */ extern PNG_EXPORT(void,png_process_data) PNGARG((png_structp png_ptr, png_infop info_ptr, png_bytep buffer, png_size_t buffer_size)); @@ -2077,7 +2104,7 @@ extern PNG_EXPORT(png_voidp,png_malloc_warn) PNGARG((png_structp png_ptr, png_uint_32 size)); #endif -/* frees a pointer allocated by png_malloc() */ +/* Frees a pointer allocated by png_malloc() */ extern PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr)); #if defined(PNG_1_0_X) @@ -2094,11 +2121,12 @@ extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 free_me, int num)); #ifdef PNG_FREE_ME_SUPPORTED /* Reassign responsibility for freeing existing data, whether allocated - * by libpng or by the application */ + * by libpng or by the application + */ extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr, png_infop info_ptr, int freer, png_uint_32 mask)); #endif -/* assignments for png_data_freer */ +/* Assignments for png_data_freer */ #define PNG_DESTROY_WILL_FREE_DATA 1 #define PNG_SET_WILL_FREE_DATA 1 #define PNG_USER_WILL_FREE_DATA 2 @@ -2182,11 +2210,13 @@ png_infop info_ptr)); #if defined(PNG_INFO_IMAGE_SUPPORTED) /* Returns row_pointers, which is an array of pointers to scanlines that was -returned from png_read_png(). */ + * returned from png_read_png(). + */ extern PNG_EXPORT(png_bytepp,png_get_rows) PNGARG((png_structp png_ptr, png_infop info_ptr)); /* Set row_pointers, which is an array of pointers to scanlines for use -by png_write_png(). */ + * by png_write_png(). + */ extern PNG_EXPORT(void,png_set_rows) PNGARG((png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)); #endif @@ -2487,8 +2517,8 @@ extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr, #endif #endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */ -#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) -/* provide a list of chunks and how they are to be handled, if the built-in +#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED +/* Provide a list of chunks and how they are to be handled, if the built-in handling or default unknown chunk handling is not desired. Any chunks not listed will be handled in the default manner. The IHDR and IEND chunks must not be listed. @@ -2499,6 +2529,10 @@ extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr, */ extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp png_ptr, int keep, png_bytep chunk_list, int num_chunks)); +PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep + chunk_name)); +#endif +#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) extern PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr, png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)); extern PNG_EXPORT(void, png_set_unknown_chunk_location) @@ -2506,14 +2540,11 @@ extern PNG_EXPORT(void, png_set_unknown_chunk_location) extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp png_ptr, png_infop info_ptr, png_unknown_chunkpp entries)); #endif -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED -PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep - chunk_name)); -#endif /* Png_free_data() will turn off the "valid" flag for anything it frees. - If you need to turn it off for a chunk that your application has freed, - you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK); */ + * If you need to turn it off for a chunk that your application has freed, + * you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK); + */ extern PNG_EXPORT(void, png_set_invalid) PNGARG((png_structp png_ptr, png_infop info_ptr, int mask)); @@ -2556,64 +2587,73 @@ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr, #ifndef PNG_DEBUG_FILE #define PNG_DEBUG_FILE stderr #endif /* PNG_DEBUG_FILE */ + #if (PNG_DEBUG > 1) -#ifndef png_debug -/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on - * non-ISO compilers */ -#ifdef __STDC__ -#define png_debug(l,m) \ -{ \ - int num_tabs=l; \ - fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ - (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \ -} -#endif -#ifndef png_debug1 -#define png_debug1(l,m,p1) \ -{ \ - int num_tabs=l; \ - fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ - (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \ -} -#endif -#ifndef png_debug2 -#define png_debug2(l,m,p1,p2) \ -{ \ - int num_tabs=l; \ - fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ - (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \ -} -#endif -#else /* __STDC __ */ -#ifndef png_debug -#define png_debug(l,m) \ - int num_tabs=l; \ - char format[256]; \ - snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ - (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ - m,PNG_STRING_NEWLINE); \ - fprintf(PNG_DEBUG_FILE,format); -#endif -#ifndef png_debug1 -#define png_debug1(l,m,p1) \ - int num_tabs=l; \ - char format[256]; \ - snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ - (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ - m,PNG_STRING_NEWLINE); \ - fprintf(PNG_DEBUG_FILE,format,p1); -#endif -#ifndef png_debug2 -#define png_debug2(l,m,p1,p2) \ - int num_tabs=l; \ - char format[256]; \ - snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ - (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ - m,PNG_STRING_NEWLINE); \ - fprintf(PNG_DEBUG_FILE,format,p1,p2); -#endif -#endif /* __STDC __ */ +/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on non-ISO + * compilers. + */ +# ifdef __STDC__ +# ifndef png_debug +# define png_debug(l,m) \ + { \ + int num_tabs=l; \ + fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \ + } +# endif +# ifndef png_debug1 +# define png_debug1(l,m,p1) \ + { \ + int num_tabs=l; \ + fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \ + } +# endif +# ifndef png_debug2 +# define png_debug2(l,m,p1,p2) \ + { \ + int num_tabs=l; \ + fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \ + } +# endif +# else /* __STDC __ */ +# ifndef png_debug +# define png_debug(l,m) \ + { \ + int num_tabs=l; \ + char format[256]; \ + snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ + m,PNG_STRING_NEWLINE); \ + fprintf(PNG_DEBUG_FILE,format); \ + } +# endif +# ifndef png_debug1 +# define png_debug1(l,m,p1) \ + { \ + int num_tabs=l; \ + char format[256]; \ + snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ + m,PNG_STRING_NEWLINE); \ + fprintf(PNG_DEBUG_FILE,format,p1); \ + } +# endif +# ifndef png_debug2 +# define png_debug2(l,m,p1,p2) \ + { \ + int num_tabs=l; \ + char format[256]; \ + snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ + m,PNG_STRING_NEWLINE); \ + fprintf(PNG_DEBUG_FILE,format,p1,p2); \ + } +# endif +# endif /* __STDC __ */ #endif /* (PNG_DEBUG > 1) */ + #endif /* _MSC_VER */ #endif /* (PNG_DEBUG > 0) */ #endif /* PNG_DEBUG */ @@ -2708,17 +2748,17 @@ extern PNG_EXPORT(void,png_set_mmx_thresholds) #if !defined(PNG_1_0_X) /* png.c, pnggccrd.c, or pngvcrd.c */ extern PNG_EXPORT(int,png_mmx_support) PNGARG((void)); +#endif /* PNG_1_0_X */ #endif /* PNG_ASSEMBLER_CODE_SUPPORTED */ /* Strip the prepended error numbers ("#nnn ") from error and warning - * messages before passing them to the error or warning handler. */ + * messages before passing them to the error or warning handler. + */ #ifdef PNG_ERROR_NUMBERS_SUPPORTED extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp png_ptr, png_uint_32 strip_mode)); #endif -#endif /* PNG_1_0_X */ - /* Added at libpng-1.2.6 */ #ifdef PNG_SET_USER_LIMITS_SUPPORTED extern PNG_EXPORT(void,png_set_user_limits) PNGARG((png_structp @@ -2730,7 +2770,9 @@ extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp #endif -/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */ +/* Maintainer: Put new public prototypes here ^, in libpng.3, and in + * project defs + */ #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED /* With these routines we avoid an integer divide, which will be slower on @@ -2759,7 +2801,7 @@ extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp (png_uint_32)(alpha)) + (png_uint_32)32768L); \ (composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); } -#else /* standard method using integer division */ +#else /* Standard method using integer division */ # define png_composite(composite, fg, alpha, bg) \ (composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \ @@ -2842,7 +2884,7 @@ extern PNG_EXPORT(void,png_save_uint_16) #define PNG_HAVE_PNG_SIGNATURE 0x1000 #define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */ -/* flags for the transformations the PNG library does on the image data */ +/* Flags for the transformations the PNG library does on the image data */ #define PNG_BGR 0x0001 #define PNG_INTERLACE 0x0002 #define PNG_PACK 0x0004 @@ -2876,7 +2918,7 @@ extern PNG_EXPORT(void,png_save_uint_16) /* 0x20000000L unused */ /* 0x40000000L unused */ -/* flags for png_create_struct */ +/* Flags for png_create_struct */ #define PNG_STRUCT_PNG 0x0001 #define PNG_STRUCT_INFO 0x0002 @@ -2886,7 +2928,7 @@ extern PNG_EXPORT(void,png_save_uint_16) #define PNG_COST_SHIFT 3 #define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT)) -/* flags for the png_ptr->flags rather than declaring a byte for each one */ +/* Flags for the png_ptr->flags rather than declaring a byte for each one */ #define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001 #define PNG_FLAG_ZLIB_CUSTOM_LEVEL 0x0002 #define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL 0x0004 @@ -2928,7 +2970,7 @@ extern PNG_EXPORT(void,png_save_uint_16) #define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \ PNG_FLAG_CRC_CRITICAL_MASK) -/* save typing and make code easier to understand */ +/* Save typing and make code easier to understand */ #define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \ abs((int)((c1).green) - (int)((c2).green)) + \ @@ -2941,13 +2983,14 @@ extern PNG_EXPORT(void,png_save_uint_16) (( ((width) * ((png_uint_32)(pixel_bits))) + 7) >> 3) ) /* PNG_OUT_OF_RANGE returns true if value is outside the range - ideal-delta..ideal+delta. Each argument is evaluated twice. - "ideal" and "delta" should be constants, normally simple - integers, "value" a variable. Added to libpng-1.2.6 JB */ + * ideal-delta..ideal+delta. Each argument is evaluated twice. + * "ideal" and "delta" should be constants, normally simple + * integers, "value" a variable. Added to libpng-1.2.6 JB + */ #define PNG_OUT_OF_RANGE(value, ideal, delta) \ ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) ) -/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */ +/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */ #if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN) /* place to hold the signature string for a PNG file. */ #ifdef PNG_USE_GLOBAL_ARRAYS @@ -3068,7 +3111,8 @@ PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr)); #endif /* Next four functions are used internally as callbacks. PNGAPI is required - * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. */ + * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. + */ PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr, png_bytep data, png_size_t length)); @@ -3133,10 +3177,10 @@ PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr, PNG_EXTERN void png_flush PNGARG((png_structp png_ptr)); #endif -/* simple function to write the signature */ +/* Simple function to write the signature */ PNG_EXTERN void png_write_sig PNGARG((png_structp png_ptr)); -/* write various chunks */ +/* Write various chunks */ /* Write the IHDR chunk, and update the png_struct with the necessary * information. @@ -3288,12 +3332,12 @@ PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr)); PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr)); #endif -/* combine a row of data, dealing with alpha, etc. if requested */ +/* Combine a row of data, dealing with alpha, etc. if requested */ PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row, int mask)); #if defined(PNG_READ_INTERLACING_SUPPORTED) -/* expand an interlaced row */ +/* Expand an interlaced row */ /* OLD pre-1.0.9 interface: PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info, png_bytep row, int pass, png_uint_32 transformations)); @@ -3304,12 +3348,12 @@ PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr)); /* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */ #if defined(PNG_WRITE_INTERLACING_SUPPORTED) -/* grab pixels out of a row for an interlaced pass */ +/* Grab pixels out of a row for an interlaced pass */ PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info, png_bytep row, int pass)); #endif -/* unfilter a row */ +/* Unfilter a row */ PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr, png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter)); @@ -3320,16 +3364,16 @@ PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr, /* Write out the filtered row. */ PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr, png_bytep filtered_row)); -/* finish a row while reading, dealing with interlacing passes, etc. */ +/* Finish a row while reading, dealing with interlacing passes, etc. */ PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr)); -/* initialize the row buffers, etc. */ +/* Initialize the row buffers, etc. */ PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr)); -/* optional call to update the users info structure */ +/* Optional call to update the users info structure */ PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr, png_infop info_ptr)); -/* these are the functions that do the transformations */ +/* These are the functions that do the transformations */ #if defined(PNG_READ_FILLER_SUPPORTED) PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info, png_bytep row, png_uint_32 filler, png_uint_32 flags)); @@ -3451,7 +3495,7 @@ PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info, * then calls the appropriate callback for the chunk if it is valid. */ -/* decode the IHDR chunk */ +/* Decode the IHDR chunk */ PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr, @@ -3550,7 +3594,7 @@ PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr, PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr, png_bytep chunk_name)); -/* handle the transformations for reading and writing */ +/* Handle the transformations for reading and writing */ PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr)); PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr)); @@ -3662,5 +3706,5 @@ PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr, #endif #endif /* PNG_VERSION_INFO_ONLY */ -/* do not put anything past this line */ +/* Do not put anything past this line */ #endif /* PNG_H */ @@ -1,11 +1,14 @@ /* pngconf.h - machine configurable file for libpng * - * libpng version 1.2.35 - February 14, 2009 - * For conditions of distribution and use, see copyright notice in png.h + * libpng version 1.2.38 - July 16, 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.) + * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h */ /* Any machine specific code is near the front of this file, so if you @@ -19,7 +22,7 @@ #define PNG_1_2_X -/* +/* * PNG_USER_CONFIG has to be defined on the compiler command line. This * includes the resource compiler for Windows DLL configurations. */ @@ -39,7 +42,7 @@ /* * Added at libpng-1.2.8 - * + * * If you create a private DLL you need to define in "pngusr.h" the followings: * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of * the DLL was built> @@ -50,8 +53,8 @@ * number and must match your private DLL name> * e.g. // private DLL "libpng13gx.dll" * #define PNG_USER_DLLFNAME_POSTFIX "gx" - * - * The following macros are also at your disposal if you want to complete the + * + * The following macros are also at your disposal if you want to complete the * DLL VERSIONINFO structure. * - PNG_USER_VERSIONINFO_COMMENTS * - PNG_USER_VERSIONINFO_COMPANYNAME @@ -147,9 +150,9 @@ * 'Cygwin' defines/defaults: * PNG_BUILD_DLL -- (ignored) building the dll * (no define) -- (ignored) building an application, linking to the dll - * PNG_STATIC -- (ignored) building the static lib, or building an + * PNG_STATIC -- (ignored) building the static lib, or building an * application that links to the static lib. - * ALL_STATIC -- (ignored) building various static libs, or building an + * ALL_STATIC -- (ignored) building various static libs, or building an * application that links to the static libs. * Thus, * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and @@ -162,12 +165,12 @@ * PNG_BUILD_DLL * PNG_STATIC * (nothing) == PNG_USE_DLL - * + * * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent - * of auto-import in binutils, we no longer need to worry about + * of auto-import in binutils, we no longer need to worry about * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes - * to __declspec() stuff. However, we DO need to worry about + * to __declspec() stuff. However, we DO need to worry about * PNG_BUILD_DLL and PNG_STATIC because those change some defaults * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. */ @@ -211,8 +214,8 @@ # if !defined(PNG_DLL) # define PNG_DLL # endif -# endif -# endif +# endif +# endif # endif #endif @@ -314,21 +317,29 @@ #ifdef PNG_SETJMP_SUPPORTED /* This is an attempt to force a single setjmp behaviour on Linux. If * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. + * + * You can bypass this test if you know that your application uses exactly + * the same setjmp.h that was included when libpng was built. Only define + * PNG_SKIP_SETJMP_CHECK while building your application, prior to the + * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK + * while building a separate libpng library for general use. */ -# ifdef __linux__ -# ifdef _BSD_SOURCE -# define PNG_SAVE_BSD_SOURCE -# undef _BSD_SOURCE -# endif -# ifdef _SETJMP_H - /* If you encounter a compiler error here, see the explanation - * near the end of INSTALL. - */ - __pngconf.h__ already includes setjmp.h; - __dont__ include it again.; -# endif -# endif /* __linux__ */ +# ifndef PNG_SKIP_SETJMP_CHECK +# ifdef __linux__ +# ifdef _BSD_SOURCE +# define PNG_SAVE_BSD_SOURCE +# undef _BSD_SOURCE +# endif +# ifdef _SETJMP_H + /* If you encounter a compiler error here, see the explanation + * near the end of INSTALL. + */ + __pngconf.h__ in libpng already includes setjmp.h; + __dont__ include it again.; +# endif +# endif /* __linux__ */ +# endif /* PNG_SKIP_SETJMP_CHECK */ /* include setjmp.h for error handling */ # include <setjmp.h> @@ -479,7 +490,7 @@ * iTXt support was added. iTXt support was turned off by default through * libpng-1.2.x, to support old apps that malloc the png_text structure * instead of calling png_set_text() and letting libpng malloc it. It - * was turned on by default in libpng-1.3.0. + * will be turned on by default in libpng-1.4.0. */ #if defined(PNG_1_0_X) || defined (PNG_1_2_X) @@ -513,6 +524,7 @@ # define PNG_NO_FREE_ME # define PNG_NO_READ_UNKNOWN_CHUNKS # define PNG_NO_WRITE_UNKNOWN_CHUNKS +# define PNG_NO_HANDLE_AS_UNKNOWN # define PNG_NO_READ_USER_CHUNKS # define PNG_NO_READ_iCCP # define PNG_NO_WRITE_iCCP @@ -542,7 +554,7 @@ # define PNG_FREE_ME_SUPPORTED #endif -#if defined(PNG_READ_SUPPORTED) +#ifdef PNG_READ_SUPPORTED #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ !defined(PNG_NO_READ_TRANSFORMS) @@ -630,7 +642,7 @@ #endif /* PNG_READ_SUPPORTED */ -#if defined(PNG_WRITE_SUPPORTED) +#ifdef PNG_WRITE_SUPPORTED # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ !defined(PNG_NO_WRITE_TRANSFORMS) @@ -733,7 +745,7 @@ # define PNG_EASY_ACCESS_SUPPORTED #endif -/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 +/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 * and removed from version 1.2.20. The following will be removed * from libpng-1.4.0 */ @@ -800,7 +812,6 @@ # define PNG_USER_HEIGHT_MAX 1000000L #endif - /* Added at libpng-1.2.34 and 1.4.0 */ #ifndef PNG_STRING_NEWLINE #define PNG_STRING_NEWLINE "\n" @@ -933,14 +944,22 @@ # define PNG_READ_zTXt_SUPPORTED # define PNG_zTXt_SUPPORTED #endif +#ifndef PNG_NO_READ_OPT_PLTE +# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ +#endif /* optional PLTE chunk in RGB and RGBA images */ +#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ + defined(PNG_READ_zTXt_SUPPORTED) +# define PNG_READ_TEXT_SUPPORTED +# define PNG_TEXT_SUPPORTED +#endif + +#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ + #ifndef PNG_NO_READ_UNKNOWN_CHUNKS # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED # define PNG_UNKNOWN_CHUNKS_SUPPORTED # endif -# ifndef PNG_NO_HANDLE_AS_UNKNOWN -# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED -# endif #endif #if !defined(PNG_NO_READ_USER_CHUNKS) && \ defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) @@ -953,17 +972,14 @@ # undef PNG_NO_HANDLE_AS_UNKNOWN # endif #endif -#ifndef PNG_NO_READ_OPT_PLTE -# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ -#endif /* optional PLTE chunk in RGB and RGBA images */ -#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ - defined(PNG_READ_zTXt_SUPPORTED) -# define PNG_READ_TEXT_SUPPORTED -# define PNG_TEXT_SUPPORTED -#endif -#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ +#ifndef PNG_NO_HANDLE_AS_UNKNOWN +# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED +# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED +# endif +#endif +#ifdef PNG_WRITE_SUPPORTED #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED #ifdef PNG_NO_WRITE_TEXT @@ -1075,17 +1091,6 @@ # define PNG_zTXt_SUPPORTED # endif #endif -#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS -# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED -# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED -# define PNG_UNKNOWN_CHUNKS_SUPPORTED -# endif -# ifndef PNG_NO_HANDLE_AS_UNKNOWN -# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED -# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED -# endif -# endif -#endif #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ defined(PNG_WRITE_zTXt_SUPPORTED) # define PNG_WRITE_TEXT_SUPPORTED @@ -1096,6 +1101,20 @@ #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ +#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS +# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED +# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED +# define PNG_UNKNOWN_CHUNKS_SUPPORTED +# endif +#endif + +#ifndef PNG_NO_HANDLE_AS_UNKNOWN +# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED +# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED +# endif +#endif +#endif /* PNG_WRITE_SUPPORTED */ + /* Turn this off to disable png_read_png() and * png_write_png() and leave the row_pointers member * out of the info structure. @@ -1241,7 +1260,7 @@ typedef char FAR * FAR * FAR * png_charppp; #if defined(PNG_1_0_X) || defined(PNG_1_2_X) /* SPC - Is this stuff deprecated? */ -/* It'll be removed as of libpng-1.3.0 - GR-P */ +/* It'll be removed as of libpng-1.4.0 - GR-P */ /* libpng typedefs for types in zlib. If zlib changes * or another compression library is used, then change these. * Eliminates need to change all the source files. @@ -1314,7 +1333,7 @@ typedef z_stream FAR * png_zstreamp; # define PNGAPI __cdecl # undef PNG_IMPEXP # define PNG_IMPEXP -#endif +#endif /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", * you may get warnings regarding the linkage of png_zalloc and png_zfree. @@ -1,12 +1,15 @@ /* pngerror.c - stub functions for i/o and memory allocation * - * Last changed in libpng 1.2.34 [December 18, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [June 4, 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.) * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * This file provides a location for all error handling. Users who * need special error handling are expected to write replacement functions * and use png_set_error_fn() to use those functions. See the instructions @@ -44,7 +47,7 @@ png_error(png_structp png_ptr, png_const_charp error_message) { if (*error_message == '#') { - /* Strip "#nnnn " from beginning of error message. */ + /* Strip "#nnnn " from beginning of error message. */ int offset; for (offset = 1; offset<15; offset++) if (error_message[offset] == ' ') @@ -217,7 +220,7 @@ png_default_error(png_structp png_ptr, png_const_charp error_message) #ifdef PNG_ERROR_NUMBERS_SUPPORTED if (*error_message == '#') { - /* Strip "#nnnn " from beginning of warning message. */ + /* Strip "#nnnn " from beginning of error message. */ int offset; char error_number[16]; for (offset = 0; offset<15; offset++) @@ -229,15 +232,23 @@ png_default_error(png_structp png_ptr, png_const_charp error_message) if ((offset > 1) && (offset < 15)) { error_number[offset - 1] = '\0'; - fprintf(stderr, "libpng error no. %s: %s\n", error_number, - error_message + offset + 1); + fprintf(stderr, "libpng error no. %s: %s", + error_number, error_message + offset + 1); + fprintf(stderr, PNG_STRING_NEWLINE); } else - fprintf(stderr, "libpng error: %s, offset=%d\n", error_message, offset); + { + fprintf(stderr, "libpng error: %s, offset=%d", + error_message, offset); + fprintf(stderr, PNG_STRING_NEWLINE); + } } else #endif - fprintf(stderr, "libpng error: %s\n", error_message); + { + fprintf(stderr, "libpng error: %s", error_message); + fprintf(stderr, PNG_STRING_NEWLINE); + } #endif #ifdef PNG_SETJMP_SUPPORTED @@ -257,7 +268,7 @@ png_default_error(png_structp png_ptr, png_const_charp error_message) PNG_ABORT(); #endif #ifdef PNG_NO_CONSOLE_IO - error_message = error_message; /* make compiler happy */ + error_message = error_message; /* Make compiler happy */ #endif } @@ -285,19 +296,27 @@ png_default_warning(png_structp png_ptr, png_const_charp warning_message) if ((offset > 1) && (offset < 15)) { warning_number[offset + 1] = '\0'; - fprintf(stderr, "libpng warning no. %s: %s\n", warning_number, - warning_message + offset); + fprintf(stderr, "libpng warning no. %s: %s", + warning_number, warning_message + offset); + fprintf(stderr, PNG_STRING_NEWLINE); } else - fprintf(stderr, "libpng warning: %s\n", warning_message); + { + fprintf(stderr, "libpng warning: %s", + warning_message); + fprintf(stderr, PNG_STRING_NEWLINE); + } } else # endif - fprintf(stderr, "libpng warning: %s\n", warning_message); + { + fprintf(stderr, "libpng warning: %s", warning_message); + fprintf(stderr, PNG_STRING_NEWLINE); + } #else - warning_message = warning_message; /* make compiler happy */ + warning_message = warning_message; /* Make compiler happy */ #endif - png_ptr = png_ptr; /* make compiler happy */ + png_ptr = png_ptr; /* Make compiler happy */ } #endif /* PNG_NO_WARNINGS */ @@ -1,11 +1,15 @@ /* pngget.c - retrieval of values from info struct * - * Last changed in libpng 1.2.30 [August 15, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [June 4, 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.) + * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * */ #define PNG_INTERNAL @@ -17,6 +21,7 @@ png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag) { if (png_ptr != NULL && info_ptr != NULL) return(info_ptr->valid & flag); + else return(0); } @@ -26,6 +31,7 @@ png_get_rowbytes(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) return(info_ptr->rowbytes); + else return(0); } @@ -36,20 +42,20 @@ png_get_rows(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) return(info_ptr->row_pointers); + else return(0); } #endif #ifdef PNG_EASY_ACCESS_SUPPORTED -/* easy access to info, added in libpng-0.99 */ +/* Easy access to info, added in libpng-0.99 */ png_uint_32 PNGAPI png_get_image_width(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) - { return info_ptr->width; - } + return (0); } @@ -57,9 +63,8 @@ png_uint_32 PNGAPI png_get_image_height(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) - { return info_ptr->height; - } + return (0); } @@ -67,9 +72,8 @@ png_byte PNGAPI png_get_bit_depth(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) - { return info_ptr->bit_depth; - } + return (0); } @@ -77,9 +81,8 @@ png_byte PNGAPI png_get_color_type(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) - { return info_ptr->color_type; - } + return (0); } @@ -87,9 +90,8 @@ png_byte PNGAPI png_get_filter_type(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) - { return info_ptr->filter_type; - } + return (0); } @@ -97,9 +99,8 @@ png_byte PNGAPI png_get_interlace_type(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) - { return info_ptr->interlace_type; - } + return (0); } @@ -107,9 +108,8 @@ png_byte PNGAPI png_get_compression_type(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) - { return info_ptr->compression_type; - } + return (0); } @@ -121,9 +121,12 @@ png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr) if (info_ptr->valid & PNG_INFO_pHYs) { png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter"); + if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER) return (0); - else return (info_ptr->x_pixels_per_unit); + + else + return (info_ptr->x_pixels_per_unit); } #else return (0); @@ -139,9 +142,12 @@ png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr) if (info_ptr->valid & PNG_INFO_pHYs) { png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter"); + if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER) return (0); - else return (info_ptr->y_pixels_per_unit); + + else + return (info_ptr->y_pixels_per_unit); } #else return (0); @@ -157,10 +163,13 @@ png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr) if (info_ptr->valid & PNG_INFO_pHYs) { png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter"); + if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER || info_ptr->x_pixels_per_unit != info_ptr->y_pixels_per_unit) return (0); - else return (info_ptr->x_pixels_per_unit); + + else + return (info_ptr->x_pixels_per_unit); } #else return (0); @@ -174,6 +183,7 @@ 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) + if (info_ptr->valid & PNG_INFO_pHYs) { png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio"); @@ -184,7 +194,7 @@ png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr) /(float)info_ptr->x_pixels_per_unit)); } #else - return (0.0); + return (0.0); #endif return ((float)0.0); } @@ -195,15 +205,19 @@ 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) + if (info_ptr->valid & PNG_INFO_oFFs) { png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns"); + if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER) return (0); - else return (info_ptr->x_offset); + + else + return (info_ptr->x_offset); } #else - return (0); + return (0); #endif return (0); } @@ -212,13 +226,17 @@ png_int_32 PNGAPI 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) if (info_ptr->valid & PNG_INFO_oFFs) { png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns"); + if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER) return (0); - else return (info_ptr->y_offset); + + else + return (info_ptr->y_offset); } #else return (0); @@ -230,13 +248,17 @@ png_int_32 PNGAPI 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) if (info_ptr->valid & PNG_INFO_oFFs) { png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns"); + if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL) return (0); - else return (info_ptr->x_offset); + + else + return (info_ptr->x_offset); } #else return (0); @@ -248,13 +270,17 @@ png_int_32 PNGAPI 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) if (info_ptr->valid & PNG_INFO_oFFs) { png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns"); + if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL) return (0); - else return (info_ptr->y_offset); + + else + return (info_ptr->y_offset); } #else return (0); @@ -495,8 +521,9 @@ png_get_iCCP(png_structp png_ptr, png_infop info_ptr, 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 - if we introduce multiple compression types later. */ + /* Compression_type is a dummy so the API won't have to change + * if we introduce multiple compression types later. + */ *proflen = (int)info_ptr->iccp_proflen; *compression_type = (int)info_ptr->iccp_compression; return (PNG_INFO_iCCP); @@ -549,22 +576,29 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr, *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_error(png_ptr, "Invalid bit depth"); + *color_type = info_ptr->color_type; + if (info_ptr->color_type > 6) - png_error(png_ptr, "Invalid color type"); + png_error(png_ptr, "Invalid color type"); + if (compression_type != NULL) *compression_type = info_ptr->compression_type; + if (filter_type != NULL) *filter_type = info_ptr->filter_type; + if (interlace_type != NULL) *interlace_type = info_ptr->interlace_type; - /* check for potential overflow of rowbytes */ + /* Check for potential overflow of rowbytes */ if (*width == 0 || *width > PNG_UINT_31_MAX) png_error(png_ptr, "Invalid image width"); + 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 */ @@ -575,6 +609,7 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr, png_warning(png_ptr, "Width too large for libpng to process image data."); } + return (1); } return (0); @@ -605,8 +640,8 @@ png_get_pCAL(png_structp png_ptr, png_infop info_ptr, png_charp *units, png_charpp *params) { 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) + && 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; @@ -629,7 +664,7 @@ png_get_sCAL(png_structp png_ptr, png_infop info_ptr, int *unit, double *width, double *height) { if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_sCAL)) + (info_ptr->valid & PNG_INFO_sCAL)) { *unit = info_ptr->scal_unit; *width = info_ptr->scal_pixel_width; @@ -645,7 +680,7 @@ png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr, int *unit, png_charpp width, png_charpp height) { if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_sCAL)) + (info_ptr->valid & PNG_INFO_sCAL)) { *unit = info_ptr->scal_unit; *width = info_ptr->scal_s_width; @@ -669,16 +704,19 @@ png_get_pHYs(png_structp png_ptr, png_infop info_ptr, (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; retval |= PNG_INFO_pHYs; } + if (res_y != NULL) { *res_y = info_ptr->y_pixels_per_unit; retval |= PNG_INFO_pHYs; } + if (unit_type != NULL) { *unit_type = (int)info_ptr->phys_unit_type; @@ -730,10 +768,13 @@ png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr, png_debug1(1, "in %s retrieval function", (png_ptr->chunk_name[0] == '\0' ? "text" : (png_const_charp)png_ptr->chunk_name)); + if (text_ptr != NULL) *text_ptr = info_ptr->text; + if (num_text != NULL) *num_text = info_ptr->num_text; + return ((png_uint_32)info_ptr->num_text); } if (num_text != NULL) @@ -773,6 +814,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr, *trans = info_ptr->trans; retval |= PNG_INFO_tRNS; } + if (trans_values != NULL) *trans_values = &(info_ptr->trans_values); } @@ -783,6 +825,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr, *trans_values = &(info_ptr->trans_values); retval |= PNG_INFO_tRNS; } + if (trans != NULL) *trans = NULL; } @@ -836,47 +879,47 @@ png_get_compression_buffer_size(png_structp png_ptr) #ifdef PNG_ASSEMBLER_CODE_SUPPORTED #ifndef PNG_1_0_X -/* this function was added to libpng 1.2.0 and should exist by default */ +/* This function was added to libpng 1.2.0 and should exist by default */ png_uint_32 PNGAPI png_get_asm_flags (png_structp png_ptr) { - /* obsolete, to be removed from libpng-1.4.0 */ + /* Obsolete, to be removed from libpng-1.4.0 */ return (png_ptr? 0L: 0L); } -/* this function was added to libpng 1.2.0 and should exist by default */ +/* This function was added to libpng 1.2.0 and should exist by default */ png_uint_32 PNGAPI png_get_asm_flagmask (int flag_select) { - /* obsolete, to be removed from libpng-1.4.0 */ + /* Obsolete, to be removed from libpng-1.4.0 */ flag_select=flag_select; return 0L; } /* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */ -/* this function was added to libpng 1.2.0 */ +/* This function was added to libpng 1.2.0 */ png_uint_32 PNGAPI png_get_mmx_flagmask (int flag_select, int *compilerID) { - /* obsolete, to be removed from libpng-1.4.0 */ + /* Obsolete, to be removed from libpng-1.4.0 */ flag_select=flag_select; *compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */ return 0L; } -/* this function was added to libpng 1.2.0 */ +/* This function was added to libpng 1.2.0 */ png_byte PNGAPI png_get_mmx_bitdepth_threshold (png_structp png_ptr) { - /* obsolete, to be removed from libpng-1.4.0 */ + /* Obsolete, to be removed from libpng-1.4.0 */ return (png_ptr? 0: 0); } -/* this function was added to libpng 1.2.0 */ +/* This function was added to libpng 1.2.0 */ png_uint_32 PNGAPI png_get_mmx_rowbytes_threshold (png_structp png_ptr) { - /* obsolete, to be removed from libpng-1.4.0 */ + /* Obsolete, to be removed from libpng-1.4.0 */ return (png_ptr? 0L: 0L); } #endif /* ?PNG_1_0_X */ @@ -895,6 +938,6 @@ png_get_user_height_max (png_structp png_ptr) return (png_ptr? png_ptr->user_height_max : 0); } #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ - + #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ @@ -1,12 +1,15 @@ /* pngmem.c - stub functions for memory allocation * - * Last changed in libpng 1.2.30 [August 15, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [June 4, 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.) * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * This file provides a location for all memory allocation. Users who * need special memory handling are expected to supply replacement * functions for png_malloc() and png_free(), and to use @@ -20,7 +23,7 @@ /* Borland DOS special memory handler */ #if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__) -/* if you change this, be sure to change the one in png.h also */ +/* If you change this, be sure to change the one in png.h also */ /* Allocate memory for a png_struct. The malloc and memset can be replaced by a single call to calloc() if this is thought to improve performance. */ @@ -40,11 +43,11 @@ png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr) png_voidp struct_ptr; if (type == PNG_STRUCT_INFO) - size = png_sizeof(png_info); + size = png_sizeof(png_info); else if (type == PNG_STRUCT_PNG) - size = png_sizeof(png_struct); + size = png_sizeof(png_struct); else - return (png_get_copyright(NULL)); + return (png_get_copyright(NULL)); #ifdef PNG_USER_MEM_SUPPORTED if (malloc_fn != NULL) @@ -56,7 +59,7 @@ png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr) } else #endif /* PNG_USER_MEM_SUPPORTED */ - struct_ptr = (png_voidp)farmalloc(size); + struct_ptr = (png_voidp)farmalloc(size); if (struct_ptr != NULL) png_memset(struct_ptr, 0, size); return (struct_ptr); @@ -122,9 +125,9 @@ png_malloc(png_structp png_ptr, png_uint_32 size) #ifdef PNG_USER_MEM_SUPPORTED if (png_ptr->malloc_fn != NULL) - ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size)); + ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size)); else - ret = (png_malloc_default(png_ptr, size)); + ret = (png_malloc_default(png_ptr, size)); if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) png_error(png_ptr, "Out of memory!"); return (ret); @@ -149,12 +152,12 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size) #endif if (size != (size_t)size) - ret = NULL; + ret = NULL; else if (size == (png_uint_32)65536L) { if (png_ptr->offset_table == NULL) { - /* try to see if we need to do any of this fancy stuff */ + /* Try to see if we need to do any of this fancy stuff */ ret = farmalloc(size); if (ret == NULL || ((png_size_t)ret & 0xffff)) { @@ -269,10 +272,10 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size) return (ret); } -/* free a pointer allocated by png_malloc(). In the default - configuration, png_ptr is not used, but is passed in case it - is needed. If ptr is NULL, return without taking any action. */ - +/* Free a pointer allocated by png_malloc(). In the default + * configuration, png_ptr is not used, but is passed in case it + * is needed. If ptr is NULL, return without taking any action. + */ void PNGAPI png_free(png_structp png_ptr, png_voidp ptr) { @@ -285,7 +288,8 @@ png_free(png_structp png_ptr, png_voidp ptr) (*(png_ptr->free_fn))(png_ptr, ptr); return; } - else png_free_default(png_ptr, ptr); + else + png_free_default(png_ptr, ptr); } void PNGAPI @@ -293,7 +297,8 @@ png_free_default(png_structp png_ptr, png_voidp ptr) { #endif /* PNG_USER_MEM_SUPPORTED */ - if (png_ptr == NULL || ptr == NULL) return; + if (png_ptr == NULL || ptr == NULL) + return; if (png_ptr->offset_table != NULL) { @@ -420,10 +425,12 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn, } /* Allocate memory. For reasonable files, size should never exceed - 64K. However, zlib may allocate more then 64K if you don't tell - it not to. See zconf.h and png.h for more information. zlib does - need to allocate exactly 64K, so whatever you call here must - have the ability to do that. */ + * 64K. However, zlib may allocate more then 64K if you don't tell + * it not to. See zconf.h and png.h for more information. zlib does + * need to allocate exactly 64K, so whatever you call here must + * have the ability to do that. + */ + png_voidp PNGAPI png_malloc(png_structp png_ptr, png_uint_32 size) @@ -435,9 +442,9 @@ png_malloc(png_structp png_ptr, png_uint_32 size) return (NULL); if (png_ptr->malloc_fn != NULL) - ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size)); + ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size)); else - ret = (png_malloc_default(png_ptr, size)); + ret = (png_malloc_default(png_ptr, size)); if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) png_error(png_ptr, "Out of Memory!"); return (ret); @@ -464,23 +471,23 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size) } #endif - /* Check for overflow */ + /* Check for overflow */ #if defined(__TURBOC__) && !defined(__FLAT__) - if (size != (unsigned long)size) - ret = NULL; - else - ret = farmalloc(size); + if (size != (unsigned long)size) + ret = NULL; + else + ret = farmalloc(size); #else # if defined(_MSC_VER) && defined(MAXSEG_64K) - if (size != (unsigned long)size) - ret = NULL; - else - ret = halloc(size, 1); + if (size != (unsigned long)size) + ret = NULL; + else + ret = halloc(size, 1); # else - if (size != (size_t)size) - ret = NULL; - else - ret = malloc((size_t)size); + if (size != (size_t)size) + ret = NULL; + else + ret = malloc((size_t)size); # endif #endif @@ -493,7 +500,8 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size) } /* Free a pointer allocated by png_malloc(). If ptr is NULL, return - without taking any action. */ + * without taking any action. + */ void PNGAPI png_free(png_structp png_ptr, png_voidp ptr) { @@ -506,7 +514,8 @@ png_free(png_structp png_ptr, png_voidp ptr) (*(png_ptr->free_fn))(png_ptr, ptr); return; } - else png_free_default(png_ptr, ptr); + else + png_free_default(png_ptr, ptr); } void PNGAPI png_free_default(png_structp png_ptr, png_voidp ptr) @@ -542,7 +551,8 @@ png_malloc_warn(png_structp png_ptr, png_uint_32 size) { png_voidp ptr; png_uint_32 save_flags; - if (png_ptr == NULL) return (NULL); + if (png_ptr == NULL) + return (NULL); save_flags = png_ptr->flags; png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK; @@ -602,7 +612,8 @@ png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr png_voidp PNGAPI png_get_mem_ptr(png_structp png_ptr) { - if (png_ptr == NULL) return (NULL); + if (png_ptr == NULL) + return (NULL); return ((png_voidp)png_ptr->mem_ptr); } #endif /* PNG_USER_MEM_SUPPORTED */ @@ -1,18 +1,21 @@ /* pngpread.c - read a png file in push mode * - * Last changed in libpng 1.2.32 [September 18, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [July 16, 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.) + * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h */ #define PNG_INTERNAL #include "png.h" #ifdef PNG_PROGRESSIVE_READ_SUPPORTED -/* push model modes */ +/* Push model modes */ #define PNG_READ_SIG_MODE 0 #define PNG_READ_CHUNK_MODE 1 #define PNG_READ_IDAT_MODE 2 @@ -27,7 +30,9 @@ void PNGAPI png_process_data(png_structp png_ptr, png_infop info_ptr, png_bytep buffer, png_size_t buffer_size) { - if (png_ptr == NULL || info_ptr == NULL) return; + if (png_ptr == NULL || info_ptr == NULL) + return; + png_push_restore_buffer(png_ptr, buffer, buffer_size); while (png_ptr->buffer_size) @@ -42,7 +47,9 @@ png_process_data(png_structp png_ptr, png_infop info_ptr, void /* PRIVATE */ png_process_some_data(png_structp png_ptr, png_infop info_ptr) { - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; + switch (png_ptr->process_mode) { case PNG_READ_SIG_MODE: @@ -50,22 +57,26 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr) png_push_read_sig(png_ptr, info_ptr); break; } + case PNG_READ_CHUNK_MODE: { png_push_read_chunk(png_ptr, info_ptr); break; } + case PNG_READ_IDAT_MODE: { png_push_read_IDAT(png_ptr); break; } + #if defined(PNG_READ_tEXt_SUPPORTED) case PNG_READ_tEXt_MODE: { png_push_read_tEXt(png_ptr, info_ptr); break; } + #endif #if defined(PNG_READ_zTXt_SUPPORTED) case PNG_READ_zTXt_MODE: @@ -73,6 +84,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr) png_push_read_zTXt(png_ptr, info_ptr); break; } + #endif #if defined(PNG_READ_iTXt_SUPPORTED) case PNG_READ_iTXt_MODE: @@ -80,12 +92,14 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr) png_push_read_iTXt(png_ptr, info_ptr); break; } + #endif case PNG_SKIP_MODE: { png_push_crc_finish(png_ptr); break; } + default: { png_ptr->buffer_size = 0; @@ -224,13 +238,16 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) { if (png_ptr->push_length != 13) png_error(png_ptr, "Invalid IHDR length"); + if (png_ptr->push_length + 4 > png_ptr->buffer_size) { png_push_save_buffer(png_ptr); return; } + png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length); } + else if (!png_memcmp(png_ptr->chunk_name, png_IEND, 4)) { if (png_ptr->push_length + 4 > png_ptr->buffer_size) @@ -238,11 +255,13 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_IEND(png_ptr, info_ptr, png_ptr->push_length); png_ptr->process_mode = PNG_READ_DONE_MODE; png_push_have_end(png_ptr, info_ptr); } + #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED else if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name)) { @@ -251,20 +270,26 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) png_ptr->mode |= PNG_HAVE_IDAT; + png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length); + if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4)) png_ptr->mode |= PNG_HAVE_PLTE; + else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) { if (!(png_ptr->mode & PNG_HAVE_IHDR)) png_error(png_ptr, "Missing IHDR before IDAT"); + else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && !(png_ptr->mode & PNG_HAVE_PLTE)) png_error(png_ptr, "Missing PLTE before IDAT"); } } + #endif else if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4)) { @@ -275,23 +300,26 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) } png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length); } + else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) { /* If we reach an IDAT chunk, this means we have read all of the * header chunks, and we can start reading the image (or if this * is called after the image has been read - we have an error). */ - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before IDAT"); - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - !(png_ptr->mode & PNG_HAVE_PLTE)) - png_error(png_ptr, "Missing PLTE before IDAT"); + + if (!(png_ptr->mode & PNG_HAVE_IHDR)) + png_error(png_ptr, "Missing IHDR before IDAT"); + + else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && + !(png_ptr->mode & PNG_HAVE_PLTE)) + png_error(png_ptr, "Missing PLTE before IDAT"); if (png_ptr->mode & PNG_HAVE_IDAT) { if (!(png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT)) - if (png_ptr->push_length == 0) - return; + if (png_ptr->push_length == 0) + return; if (png_ptr->mode & PNG_AFTER_IDAT) png_error(png_ptr, "Too many IDAT's found"); @@ -305,6 +333,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_ptr->zstream.next_out = png_ptr->row_buf; return; } + #if defined(PNG_READ_gAMA_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_gAMA, 4)) { @@ -313,8 +342,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_gAMA(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_sBIT_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_sBIT, 4)) @@ -324,8 +355,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_sBIT(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_cHRM_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_cHRM, 4)) @@ -335,8 +368,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_sRGB_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_sRGB, 4)) @@ -346,8 +381,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_sRGB(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_iCCP_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_iCCP, 4)) @@ -357,8 +394,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_iCCP(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_sPLT_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_sPLT, 4)) @@ -368,8 +407,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_sPLT(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_tRNS_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_tRNS, 4)) @@ -379,8 +420,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_tRNS(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_bKGD_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_bKGD, 4)) @@ -390,8 +433,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_bKGD(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_hIST_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_hIST, 4)) @@ -401,8 +446,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_pHYs_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_pHYs, 4)) @@ -412,8 +459,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_pHYs(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_oFFs_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_oFFs, 4)) @@ -423,9 +472,11 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_oFFs(png_ptr, info_ptr, png_ptr->push_length); } #endif + #if defined(PNG_READ_pCAL_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_pCAL, 4)) { @@ -434,8 +485,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_pCAL(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_sCAL_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_sCAL, 4)) @@ -445,8 +498,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_sCAL(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_tIME_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4)) @@ -456,8 +511,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_handle_tIME(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_tEXt_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4)) @@ -467,8 +524,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_push_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_zTXt_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4)) @@ -478,8 +537,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_push_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length); } + #endif #if defined(PNG_READ_iTXt_SUPPORTED) else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4)) @@ -489,8 +550,10 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) png_push_save_buffer(png_ptr); return; } + png_push_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length); } + #endif else { @@ -565,7 +628,9 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length) { png_bytep ptr; - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; + ptr = buffer; if (png_ptr->save_buffer_size) { @@ -589,6 +654,7 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length) if (length < png_ptr->current_buffer_size) save_size = length; + else save_size = png_ptr->current_buffer_size; @@ -629,6 +695,7 @@ png_push_save_buffer(png_structp png_ptr) { png_error(png_ptr, "Potential overflow of save_buffer"); } + new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256; old_buffer = png_ptr->save_buffer; png_ptr->save_buffer = (png_bytep)png_malloc(png_ptr, @@ -697,7 +764,8 @@ png_push_read_IDAT(png_structp png_ptr) if (png_ptr->idat_size < (png_uint_32)png_ptr->save_buffer_size) { save_size = (png_size_t)png_ptr->idat_size; - /* check for overflow */ + + /* Check for overflow */ if ((png_uint_32)save_size != png_ptr->idat_size) png_error(png_ptr, "save_size overflowed in pngpread"); } @@ -705,8 +773,10 @@ png_push_read_IDAT(png_structp png_ptr) save_size = png_ptr->save_buffer_size; png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size); + if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED)) png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size); + png_ptr->idat_size -= save_size; png_ptr->buffer_size -= save_size; png_ptr->save_buffer_size -= save_size; @@ -719,7 +789,8 @@ png_push_read_IDAT(png_structp png_ptr) if (png_ptr->idat_size < (png_uint_32)png_ptr->current_buffer_size) { save_size = (png_size_t)png_ptr->idat_size; - /* check for overflow */ + + /* Check for overflow */ if ((png_uint_32)save_size != png_ptr->idat_size) png_error(png_ptr, "save_size overflowed in pngpread"); } @@ -769,6 +840,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer, { if (png_ptr->zstream.avail_in) png_error(png_ptr, "Extra compressed data"); + if (!(png_ptr->zstream.avail_out)) { png_push_process_row(png_ptr); @@ -780,6 +852,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer, } else if (ret == Z_BUF_ERROR) break; + else png_error(png_ptr, "Decompression Error"); } @@ -801,6 +874,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer, png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes; png_ptr->zstream.next_out = png_ptr->row_buf; } + else break; } @@ -829,7 +903,7 @@ png_push_process_row(png_structp png_ptr) png_do_read_transformations(png_ptr); #if defined(PNG_READ_INTERLACING_SUPPORTED) - /* blow up interlaced rows to full size */ + /* Blow up interlaced rows to full size */ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE)) { if (png_ptr->pass < 6) @@ -847,9 +921,10 @@ png_push_process_row(png_structp png_ptr) for (i = 0; i < 8 && png_ptr->pass == 0; i++) { png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); /* updates png_ptr->pass */ + png_read_push_finish_row(png_ptr); /* Updates png_ptr->pass */ } - if (png_ptr->pass == 2) /* pass 1 might be empty */ + + if (png_ptr->pass == 2) /* Pass 1 might be empty */ { for (i = 0; i < 4 && png_ptr->pass == 2; i++) { @@ -857,6 +932,7 @@ png_push_process_row(png_structp png_ptr) png_read_push_finish_row(png_ptr); } } + if (png_ptr->pass == 4 && png_ptr->height <= 4) { for (i = 0; i < 2 && png_ptr->pass == 4; i++) @@ -865,13 +941,16 @@ png_push_process_row(png_structp png_ptr) png_read_push_finish_row(png_ptr); } } + if (png_ptr->pass == 6 && png_ptr->height <= 4) { png_push_have_row(png_ptr, png_bytep_NULL); png_read_push_finish_row(png_ptr); } + break; } + case 1: { int i; @@ -880,7 +959,8 @@ png_push_process_row(png_structp png_ptr) png_push_have_row(png_ptr, png_ptr->row_buf + 1); png_read_push_finish_row(png_ptr); } - if (png_ptr->pass == 2) /* skip top 4 generated rows */ + + if (png_ptr->pass == 2) /* Skip top 4 generated rows */ { for (i = 0; i < 4 && png_ptr->pass == 2; i++) { @@ -888,22 +968,27 @@ png_push_process_row(png_structp png_ptr) png_read_push_finish_row(png_ptr); } } + break; } + case 2: { int i; + for (i = 0; i < 4 && png_ptr->pass == 2; i++) { png_push_have_row(png_ptr, png_ptr->row_buf + 1); png_read_push_finish_row(png_ptr); } + for (i = 0; i < 4 && png_ptr->pass == 2; i++) { png_push_have_row(png_ptr, png_bytep_NULL); png_read_push_finish_row(png_ptr); } - if (png_ptr->pass == 4) /* pass 3 might be empty */ + + if (png_ptr->pass == 4) /* Pass 3 might be empty */ { for (i = 0; i < 2 && png_ptr->pass == 4; i++) { @@ -911,17 +996,21 @@ png_push_process_row(png_structp png_ptr) png_read_push_finish_row(png_ptr); } } + break; } + case 3: { int i; + for (i = 0; i < 4 && png_ptr->pass == 3; i++) { png_push_have_row(png_ptr, png_ptr->row_buf + 1); png_read_push_finish_row(png_ptr); } - if (png_ptr->pass == 4) /* skip top two generated rows */ + + if (png_ptr->pass == 4) /* Skip top two generated rows */ { for (i = 0; i < 2 && png_ptr->pass == 4; i++) { @@ -929,49 +1018,61 @@ png_push_process_row(png_structp png_ptr) png_read_push_finish_row(png_ptr); } } + break; } + case 4: { int i; + for (i = 0; i < 2 && png_ptr->pass == 4; i++) { png_push_have_row(png_ptr, png_ptr->row_buf + 1); png_read_push_finish_row(png_ptr); } + for (i = 0; i < 2 && png_ptr->pass == 4; i++) { png_push_have_row(png_ptr, png_bytep_NULL); png_read_push_finish_row(png_ptr); } - if (png_ptr->pass == 6) /* pass 5 might be empty */ + + if (png_ptr->pass == 6) /* Pass 5 might be empty */ { png_push_have_row(png_ptr, png_bytep_NULL); png_read_push_finish_row(png_ptr); } + break; } + case 5: { int i; + for (i = 0; i < 2 && png_ptr->pass == 5; i++) { png_push_have_row(png_ptr, png_ptr->row_buf + 1); png_read_push_finish_row(png_ptr); } - if (png_ptr->pass == 6) /* skip top generated row */ + + if (png_ptr->pass == 6) /* Skip top generated row */ { png_push_have_row(png_ptr, png_bytep_NULL); png_read_push_finish_row(png_ptr); } + break; } case 6: { png_push_have_row(png_ptr, png_ptr->row_buf + 1); png_read_push_finish_row(png_ptr); + if (png_ptr->pass != 6) break; + png_push_have_row(png_ptr, png_bytep_NULL); png_read_push_finish_row(png_ptr); } @@ -989,18 +1090,18 @@ void /* PRIVATE */ png_read_push_finish_row(png_structp png_ptr) { #ifdef PNG_USE_LOCAL_ARRAYS - /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */ + /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - /* start of interlace block */ + /* Start of interlace block */ PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0}; - /* offset to next interlace block */ + /* Offset to next interlace block */ PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1}; - /* start of interlace block in the y direction */ + /* Start of interlace block in the y direction */ PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1}; - /* offset to next interlace block in the y direction */ + /* Offset to next interlace block in the y direction */ PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2}; /* Height of interlace block. This is not currently used - if you need @@ -1013,6 +1114,7 @@ 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) if (png_ptr->interlaced) { png_ptr->row_number = 0; @@ -1028,6 +1130,7 @@ png_read_push_finish_row(png_structp png_ptr) if (png_ptr->pass > 7) png_ptr->pass--; + if (png_ptr->pass >= 7) break; @@ -1049,6 +1152,7 @@ png_read_push_finish_row(png_structp png_ptr) } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0); } +#endif /* PNG_READ_INTERLACING_SUPPORTED */ } #if defined(PNG_READ_tEXt_SUPPORTED) @@ -1059,7 +1163,7 @@ png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND)) { png_error(png_ptr, "Out of place tEXt"); - info_ptr = info_ptr; /* to quiet some compiler warnings */ + info_ptr = info_ptr; /* To quiet some compiler warnings */ } #ifdef PNG_MAX_MALLOC_64K @@ -1091,8 +1195,10 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr) if (png_ptr->buffer_size < png_ptr->current_text_left) text_size = png_ptr->buffer_size; + else text_size = png_ptr->current_text_left; + png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size); png_ptr->current_text_left -= text_size; png_ptr->current_text_ptr += text_size; @@ -1120,7 +1226,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr) key = png_ptr->current_text; for (text = key; *text; text++) - /* empty loop */ ; + /* Empty loop */ ; if (text < key + png_ptr->current_text_size) text++; @@ -1155,7 +1261,7 @@ png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND)) { png_error(png_ptr, "Out of place zTXt"); - info_ptr = info_ptr; /* to quiet some compiler warnings */ + info_ptr = info_ptr; /* To quiet some compiler warnings */ } #ifdef PNG_MAX_MALLOC_64K @@ -1189,8 +1295,10 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr) if (png_ptr->buffer_size < (png_uint_32)png_ptr->current_text_left) text_size = png_ptr->buffer_size; + else text_size = png_ptr->current_text_left; + png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size); png_ptr->current_text_left -= text_size; png_ptr->current_text_ptr += text_size; @@ -1214,7 +1322,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr) key = png_ptr->current_text; for (text = key; *text; text++) - /* empty loop */ ; + /* Empty loop */ ; /* zTXt can't have zero text */ if (text >= key + png_ptr->current_text_size) @@ -1226,7 +1334,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr) text++; - if (*text != PNG_TEXT_COMPRESSION_zTXt) /* check compression byte */ + if (*text != PNG_TEXT_COMPRESSION_zTXt) /* Check compression byte */ { png_ptr->current_text = NULL; png_free(png_ptr, key); @@ -1265,11 +1373,15 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr) text = (png_charp)png_malloc(png_ptr, (png_uint_32)(png_ptr->zbuf_size - png_ptr->zstream.avail_out + key_size + 1)); + png_memcpy(text + key_size, png_ptr->zbuf, png_ptr->zbuf_size - png_ptr->zstream.avail_out); + png_memcpy(text, key, key_size); + text_size = key_size + png_ptr->zbuf_size - png_ptr->zstream.avail_out; + *(text + text_size) = '\0'; } else @@ -1280,10 +1392,13 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr) text = (png_charp)png_malloc(png_ptr, text_size + (png_uint_32)(png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1)); + png_memcpy(text, tmp, text_size); png_free(png_ptr, tmp); + png_memcpy(text + text_size, png_ptr->zbuf, png_ptr->zbuf_size - png_ptr->zstream.avail_out); + text_size += png_ptr->zbuf_size - png_ptr->zstream.avail_out; *(text + text_size) = '\0'; } @@ -1347,7 +1462,7 @@ png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND)) { png_error(png_ptr, "Out of place iTXt"); - info_ptr = info_ptr; /* to quiet some compiler warnings */ + info_ptr = info_ptr; /* To quiet some compiler warnings */ } #ifdef PNG_MAX_MALLOC_64K @@ -1380,8 +1495,10 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr) if (png_ptr->buffer_size < png_ptr->current_text_left) text_size = png_ptr->buffer_size; + else text_size = png_ptr->current_text_left; + png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size); png_ptr->current_text_left -= text_size; png_ptr->current_text_ptr += text_size; @@ -1412,23 +1529,25 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr) key = png_ptr->current_text; for (lang = key; *lang; lang++) - /* empty loop */ ; + /* Empty loop */ ; if (lang < key + png_ptr->current_text_size - 3) lang++; comp_flag = *lang++; - lang++; /* skip comp_type, always zero */ + lang++; /* Skip comp_type, always zero */ for (lang_key = lang; *lang_key; lang_key++) - /* empty loop */ ; - lang_key++; /* skip NUL separator */ + /* Empty loop */ ; + + lang_key++; /* Skip NUL separator */ text=lang_key; + if (lang_key < key + png_ptr->current_text_size - 1) { for (; *text; text++) - /* empty loop */ ; + /* Empty loop */ ; } if (text < key + png_ptr->current_text_size) @@ -1436,6 +1555,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr) text_ptr = (png_textp)png_malloc(png_ptr, (png_uint_32)png_sizeof(png_text)); + text_ptr->compression = comp_flag + 2; text_ptr->key = key; text_ptr->lang = lang; @@ -1477,7 +1597,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 #endif png_chunk_error(png_ptr, "unknown critical chunk"); - info_ptr = info_ptr; /* to quiet some compiler warnings */ + info_ptr = info_ptr; /* To quiet some compiler warnings */ } #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) @@ -1498,23 +1618,28 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 = '\0'; png_ptr->unknown_chunk.size = (png_size_t)length; + if (length == 0) png_ptr->unknown_chunk.data = NULL; + else { png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, (png_uint_32)length); png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length); } + #if defined(PNG_READ_USER_CHUNKS_SUPPORTED) if (png_ptr->read_user_chunk_fn != NULL) { - /* callback to user unknown chunk handler */ + /* Callback to user unknown chunk handler */ int ret; ret = (*(png_ptr->read_user_chunk_fn)) (png_ptr, &png_ptr->unknown_chunk); + if (ret < 0) png_chunk_error(png_ptr, "error in user chunk"); + if (ret == 0) { if (!(png_ptr->chunk_name[0] & 0x20)) @@ -1525,12 +1650,14 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 &png_ptr->unknown_chunk, 1); } } + else #endif png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1); png_free(png_ptr, png_ptr->unknown_chunk.data); png_ptr->unknown_chunk.data = NULL; } + else #endif skip=length; @@ -1567,7 +1694,9 @@ 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; + if (png_ptr == NULL) + return; + if (new_row != NULL) /* new_row must == png_ptr->row_buf here. */ png_combine_row(png_ptr, old_row, png_pass_dsp_mask[png_ptr->pass]); } @@ -1577,7 +1706,9 @@ png_set_progressive_read_fn(png_structp png_ptr, png_voidp progressive_ptr, png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn, png_progressive_end_ptr end_fn) { - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; + png_ptr->info_fn = info_fn; png_ptr->row_fn = row_fn; png_ptr->end_fn = end_fn; @@ -1588,7 +1719,9 @@ png_set_progressive_read_fn(png_structp png_ptr, png_voidp progressive_ptr, png_voidp PNGAPI png_get_progressive_ptr(png_structp png_ptr) { - if (png_ptr == NULL) return (NULL); + if (png_ptr == NULL) + return (NULL); + return png_ptr->io_ptr; } #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ @@ -1,12 +1,15 @@ /* pngread.c - read a PNG file * - * Last changed in libpng 1.2.35 [February 14, 2009] - * For conditions of distribution and use, see copyright notice in png.h + * Last changed in libpng 1.2.37 [June 4, 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.) * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * This file contains routines that an application calls directly to * read a PNG file or stream. */ @@ -57,7 +60,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, if (png_ptr == NULL) return (NULL); - /* added at libpng-1.2.6 */ + /* 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; @@ -102,7 +105,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, } else png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; - + if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH) { @@ -137,7 +140,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, } } - /* initialize zbuf - compression buffer */ + /* 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); @@ -192,7 +195,8 @@ png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t png_info_size) { /* We only come here via pre-1.0.12-compiled applications */ - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; #if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE) if (png_sizeof(png_struct) > png_struct_size || png_sizeof(png_info) > png_info_size) @@ -246,7 +250,8 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver, png_structp png_ptr=*ptr_ptr; - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; do { @@ -266,7 +271,7 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver, png_debug(1, "in png_read_init_3"); #ifdef PNG_SETJMP_SUPPORTED - /* save jump buffer and error functions */ + /* Save jump buffer and error functions */ png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf)); #endif @@ -277,21 +282,21 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver, png_ptr = *ptr_ptr; } - /* reset all variables to 0 */ + /* Reset all variables to 0 */ png_memset(png_ptr, 0, png_sizeof(png_struct)); #ifdef PNG_SETJMP_SUPPORTED - /* restore jump buffer */ + /* Restore jump buffer */ png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf)); #endif - /* added at libpng-1.2.6 */ + /* Added at libpng-1.2.6 */ #ifdef PNG_SET_USER_LIMITS_SUPPORTED png_ptr->user_width_max=PNG_USER_WIDTH_MAX; png_ptr->user_height_max=PNG_USER_HEIGHT_MAX; #endif - /* initialize zbuf - compression buffer */ + /* Initialize zbuf - compression buffer */ png_ptr->zbuf_size = PNG_ZBUF_SIZE; png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, (png_uint_32)png_ptr->zbuf_size); @@ -326,7 +331,8 @@ 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) { - if (png_ptr == NULL || info_ptr == NULL) return; + 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) @@ -529,12 +535,13 @@ png_read_info(png_structp png_ptr, png_infop info_ptr) } #endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */ -/* optional call to update the users info_ptr structure */ +/* 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 == NULL) + return; if (!(png_ptr->flags & PNG_FLAG_ROW_INIT)) png_read_start_row(png_ptr); else @@ -553,7 +560,8 @@ 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 == NULL) + return; if (!(png_ptr->flags & PNG_FLAG_ROW_INIT)) png_read_start_row(png_ptr); } @@ -570,14 +578,15 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff}; #endif int ret; - if (png_ptr == NULL) return; + 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) { - /* check for transforms that have been set but were defined out */ + /* Check for transforms that have been set but were defined out */ #if defined(PNG_WRITE_INVERT_SUPPORTED) && !defined(PNG_READ_INVERT_SUPPORTED) if (png_ptr->transformations & PNG_INVERT_MONO) png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined."); @@ -609,7 +618,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) } #if defined(PNG_READ_INTERLACING_SUPPORTED) - /* if interlaced and we do not need a new row, combine row and return */ + /* If interlaced and we do not need a new row, combine row and return */ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE)) { switch (png_ptr->pass) @@ -756,15 +765,15 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) png_do_read_transformations(png_ptr); #if defined(PNG_READ_INTERLACING_SUPPORTED) - /* blow up interlaced rows to full size */ + /* Blow up interlaced rows to full size */ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE)) { if (png_ptr->pass < 6) -/* old interface (pre-1.0.9): - png_do_read_interlace(&(png_ptr->row_info), - png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations); - */ + /* Old interface (pre-1.0.9): + * png_do_read_interlace(&(png_ptr->row_info), + * png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations); + */ png_do_read_interlace(png_ptr); if (dsp_row != NULL) @@ -823,7 +832,8 @@ 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; + if (png_ptr == NULL) + return; rp = row; dp = display_row; if (rp != NULL && dp != NULL) @@ -872,7 +882,8 @@ 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; + if (png_ptr == NULL) + return; #ifdef PNG_READ_INTERLACING_SUPPORTED pass = png_set_interlace_handling(png_ptr); @@ -908,7 +919,8 @@ 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; + if (png_ptr == NULL) + return; png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */ do @@ -1075,7 +1087,7 @@ png_read_end(png_structp png_ptr, png_infop info_ptr) } #endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */ -/* free all memory used by the read */ +/* Free all memory used by the read */ void PNGAPI png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr) @@ -1147,7 +1159,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, } } -/* free all memory used by the read (old method) */ +/* Free all memory used by the read (old method) */ void /* PRIVATE */ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr) { @@ -1296,7 +1308,8 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr void PNGAPI png_set_read_status_fn(png_structp png_ptr, png_read_status_ptr read_row_fn) { - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->read_row_fn = read_row_fn; } @@ -1310,9 +1323,10 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, { int row; - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; #if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) - /* invert the alpha channel from opacity to transparency + /* Invert the alpha channel from opacity to transparency */ if (transforms & PNG_TRANSFORM_INVERT_ALPHA) png_set_invert_alpha(png_ptr); @@ -1328,10 +1342,10 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, /* -------------- image transformations start here ------------------- */ #if defined(PNG_READ_16_TO_8_SUPPORTED) - /* tell libpng to strip 16 bit/color files down to 8 bits per color + /* 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); + png_set_strip_16(png_ptr); #endif #if defined(PNG_READ_STRIP_ALPHA_SUPPORTED) @@ -1339,7 +1353,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, * the background (not recommended). */ if (transforms & PNG_TRANSFORM_STRIP_ALPHA) - png_set_strip_alpha(png_ptr); + png_set_strip_alpha(png_ptr); #endif #if defined(PNG_READ_PACK_SUPPORTED) && !defined(PNG_READ_EXPAND_SUPPORTED) @@ -1347,7 +1361,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, * byte into separate bytes (useful for paletted and grayscale images). */ if (transforms & PNG_TRANSFORM_PACKING) - png_set_packing(png_ptr); + png_set_packing(png_ptr); #endif #if defined(PNG_READ_PACKSWAP_SUPPORTED) @@ -1355,7 +1369,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, * (not useful if you are using png_set_packing). */ if (transforms & PNG_TRANSFORM_PACKSWAP) - png_set_packswap(png_ptr); + png_set_packswap(png_ptr); #endif #if defined(PNG_READ_EXPAND_SUPPORTED) @@ -1365,9 +1379,9 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, * channels so the data will be available as RGBA quartets. */ if (transforms & PNG_TRANSFORM_EXPAND) - if ((png_ptr->bit_depth < 8) || - (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) || - (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))) + if ((png_ptr->bit_depth < 8) || + (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) || + (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))) png_set_expand(png_ptr); #endif @@ -1375,10 +1389,10 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, */ #if defined(PNG_READ_INVERT_SUPPORTED) - /* invert monochrome files to have 0 as white and 1 as black + /* Invert monochrome files to have 0 as white and 1 as black */ if (transforms & PNG_TRANSFORM_INVERT_MONO) - png_set_invert_mono(png_ptr); + png_set_invert_mono(png_ptr); #endif #if defined(PNG_READ_SHIFT_SUPPORTED) @@ -1397,24 +1411,24 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, #endif #if defined(PNG_READ_BGR_SUPPORTED) - /* flip the RGB pixels to BGR (or RGBA to BGRA) + /* Flip the RGB pixels to BGR (or RGBA to BGRA) */ if (transforms & PNG_TRANSFORM_BGR) - png_set_bgr(png_ptr); + png_set_bgr(png_ptr); #endif #if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) - /* swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) + /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */ if (transforms & PNG_TRANSFORM_SWAP_ALPHA) png_set_swap_alpha(png_ptr); #endif #if defined(PNG_READ_SWAP_SUPPORTED) - /* swap bytes of 16 bit files to least significant byte first + /* Swap bytes of 16 bit files to least significant byte first */ if (transforms & PNG_TRANSFORM_SWAP_ENDIAN) - png_set_swap(png_ptr); + png_set_swap(png_ptr); #endif /* We don't handle adding filler bytes */ @@ -1434,11 +1448,11 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, { info_ptr->row_pointers = (png_bytepp)png_malloc(png_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 - png_memset(info_ptr->row_pointers, 0, info_ptr->height - * png_sizeof(png_bytep)); 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)); @@ -1447,10 +1461,10 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, png_read_image(png_ptr, info_ptr->row_pointers); info_ptr->valid |= PNG_INFO_IDAT; - /* read rest of file, and get additional chunks in info_ptr - REQUIRED */ + /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */ png_read_end(png_ptr, info_ptr); - transforms = transforms; /* quiet compiler warnings */ + transforms = transforms; /* Quiet compiler warnings */ params = params; } @@ -1,12 +1,15 @@ /* pngrio.c - functions for data input * - * Last changed in libpng 1.2.30 [August 15, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [June 4, 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.) * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * This file provides a location for all input. Users who need * special handling are expected to write a function that has the same * arguments as this and performs a similar function, but that possibly @@ -20,10 +23,11 @@ #if defined(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 - with very small lengths, so you should implement some kind of simple - buffering if you are using unbuffered reads. This should never be asked - to read more then 64K on a 16 bit machine. */ + * reads from a file pointer. Note that this routine sometimes gets called + * with very small lengths, so you should implement some kind of simple + * buffering if you are using unbuffered reads. This should never be asked + * to read more then 64K on a 16 bit machine. + */ void /* PRIVATE */ png_read_data(png_structp png_ptr, png_bytep data, png_size_t length) { @@ -36,16 +40,18 @@ png_read_data(png_structp png_ptr, png_bytep data, png_size_t length) #if !defined(PNG_NO_STDIO) /* 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 - than changing the library. */ + * 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 + * than changing the library. + */ #ifndef USE_FAR_KEYWORD void PNGAPI png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) { png_size_t check; - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; /* 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. */ @@ -61,7 +67,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) png_error(png_ptr, "Read Error"); } #else -/* this is the model-independent version. Since the standard I/O library +/* This is the model-independent version. Since the standard I/O library can't handle far buffers in the medium and small models, we have to copy the data. */ @@ -76,7 +82,8 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) png_byte *n_data; png_FILE_p io_ptr; - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; /* Check if data really is near. If so, use usual code. */ n_data = (png_byte *)CVT_PTR_NOCHECK(data); io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr); @@ -121,23 +128,27 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) #endif /* This function allows the application to supply a new input function - for libpng if standard C streams aren't being used. - - This function takes as its arguments: - png_ptr - pointer to a png input data structure - io_ptr - pointer to user supplied structure containing info about - the input functions. May be NULL. - read_data_fn - pointer to a new input function that takes as its - arguments a pointer to a png_struct, a pointer to - a location where input data can be stored, and a 32-bit - unsigned int that is the number of bytes to be read. - To exit and output any fatal error messages the new write - function should call png_error(png_ptr, "Error msg"). */ + * for libpng if standard C streams aren't being used. + * + * This function takes as its arguments: + * png_ptr - pointer to a png input data structure + * io_ptr - pointer to user supplied structure containing info about + * the input functions. May be NULL. + * read_data_fn - pointer to a new input function that takes as its + * arguments a pointer to a png_struct, a pointer to + * a location where input data can be stored, and a 32-bit + * unsigned int that is the number of bytes to be read. + * To exit and output any fatal error messages the new write + * function should call png_error(png_ptr, "Error msg"). + * May be NULL, in which case libpng's default function will + * be used. + */ void PNGAPI png_set_read_fn(png_structp png_ptr, png_voidp io_ptr, png_rw_ptr read_data_fn) { - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->io_ptr = io_ptr; #if !defined(PNG_NO_STDIO) @@ -1,12 +1,15 @@ /* pngrtran.c - transforms the data in a row for PNG readers * - * Last changed in libpng 1.2.35 [February 14, 2009] - * For conditions of distribution and use, see copyright notice in png.h + * Last changed in libpng 1.2.38 [July 16, 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.) * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * This file contains functions optionally called by an application * in order to tell libpng how to handle data when reading a PNG. * Transformations that are used in both reading and writing are @@ -23,24 +26,29 @@ png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action) { png_debug(1, "in png_set_crc_action"); /* Tell libpng how we react to CRC errors in critical chunks */ - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; switch (crit_action) { - case PNG_CRC_NO_CHANGE: /* leave setting as is */ + case PNG_CRC_NO_CHANGE: /* Leave setting as is */ break; - case PNG_CRC_WARN_USE: /* warn/use data */ + + case PNG_CRC_WARN_USE: /* Warn/use data */ png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE; break; - case PNG_CRC_QUIET_USE: /* quiet/use data */ + + case PNG_CRC_QUIET_USE: /* Quiet/use data */ png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE | PNG_FLAG_CRC_CRITICAL_IGNORE; break; - case PNG_CRC_WARN_DISCARD: /* not a valid action for critical data */ + + case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */ png_warning(png_ptr, "Can't discard critical data on CRC error."); - case PNG_CRC_ERROR_QUIT: /* error/quit */ + case PNG_CRC_ERROR_QUIT: /* Error/quit */ + case PNG_CRC_DEFAULT: default: png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; @@ -49,22 +57,27 @@ png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action) switch (ancil_action) { - case PNG_CRC_NO_CHANGE: /* leave setting as is */ + case PNG_CRC_NO_CHANGE: /* Leave setting as is */ break; - case PNG_CRC_WARN_USE: /* warn/use data */ + + case PNG_CRC_WARN_USE: /* Warn/use data */ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE; break; - case PNG_CRC_QUIET_USE: /* quiet/use data */ + + case PNG_CRC_QUIET_USE: /* Quiet/use data */ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN; break; - case PNG_CRC_ERROR_QUIT: /* error/quit */ + + case PNG_CRC_ERROR_QUIT: /* Error/quit */ png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_NOWARN; break; - case PNG_CRC_WARN_DISCARD: /* warn/discard data */ + + case PNG_CRC_WARN_DISCARD: /* Warn/discard data */ + case PNG_CRC_DEFAULT: default: png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; @@ -74,14 +87,15 @@ png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action) #if defined(PNG_READ_BACKGROUND_SUPPORTED) && \ defined(PNG_FLOATING_POINT_SUPPORTED) -/* handle alpha and tRNS via a background color */ +/* Handle alpha and tRNS via a background color */ void PNGAPI png_set_background(png_structp png_ptr, png_color_16p background_color, int background_gamma_code, int need_expand, double background_gamma) { png_debug(1, "in png_set_background"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; if (background_gamma_code == PNG_BACKGROUND_GAMMA_UNKNOWN) { png_warning(png_ptr, "Application must supply a known background gamma"); @@ -98,12 +112,13 @@ png_set_background(png_structp png_ptr, #endif #if defined(PNG_READ_16_TO_8_SUPPORTED) -/* strip 16 bit depth files to 8 bit depth */ +/* Strip 16 bit depth files to 8 bit depth */ void PNGAPI png_set_strip_16(png_structp png_ptr) { png_debug(1, "in png_set_strip_16"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= PNG_16_TO_8; } #endif @@ -113,7 +128,8 @@ void PNGAPI png_set_strip_alpha(png_structp png_ptr) { png_debug(1, "in png_set_strip_alpha"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->flags |= PNG_FLAG_STRIP_ALPHA; } #endif @@ -143,7 +159,8 @@ png_set_dither(png_structp png_ptr, png_colorp palette, int full_dither) { png_debug(1, "in png_set_dither"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= PNG_DITHER; if (!full_dither) @@ -161,27 +178,29 @@ png_set_dither(png_structp png_ptr, png_colorp palette, if (histogram != NULL) { /* This is easy enough, just throw out the least used colors. - Perhaps not the best solution, but good enough. */ + * Perhaps not the best solution, but good enough. + */ int i; - /* initialize an array to sort colors */ + /* Initialize an array to sort colors */ png_ptr->dither_sort = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_palette * png_sizeof(png_byte))); - /* initialize the dither_sort array */ + /* Initialize the dither_sort array */ for (i = 0; i < num_palette; i++) png_ptr->dither_sort[i] = (png_byte)i; /* Find the least used palette entries by starting a - bubble sort, and running it until we have sorted - out enough colors. Note that we don't care about - sorting all the colors, just finding which are - least used. */ + * bubble sort, and running it until we have sorted + * out enough colors. Note that we don't care about + * sorting all the colors, just finding which are + * least used. + */ for (i = num_palette - 1; i >= maximum_colors; i--) { - int done; /* to stop early if the list is pre-sorted */ + int done; /* To stop early if the list is pre-sorted */ int j; done = 1; @@ -202,13 +221,14 @@ png_set_dither(png_structp png_ptr, png_colorp palette, break; } - /* swap the palette around, and set up a table, if necessary */ + /* Swap the palette around, and set up a table, if necessary */ if (full_dither) { int j = num_palette; - /* put all the useful colors within the max, but don't - move the others */ + /* Put all the useful colors within the max, but don't + * move the others. + */ for (i = 0; i < maximum_colors; i++) { if ((int)png_ptr->dither_sort[i] >= maximum_colors) @@ -224,11 +244,12 @@ png_set_dither(png_structp png_ptr, png_colorp palette, { int j = num_palette; - /* move all the used colors inside the max limit, and - develop a translation table */ + /* Move all the used colors inside the max limit, and + * develop a translation table. + */ for (i = 0; i < maximum_colors; i++) { - /* only move the colors we need to */ + /* Only move the colors we need to */ if ((int)png_ptr->dither_sort[i] >= maximum_colors) { png_color tmp_color; @@ -240,20 +261,20 @@ png_set_dither(png_structp png_ptr, png_colorp palette, tmp_color = palette[j]; palette[j] = palette[i]; palette[i] = tmp_color; - /* indicate where the color went */ + /* Indicate where the color went */ png_ptr->dither_index[j] = (png_byte)i; png_ptr->dither_index[i] = (png_byte)j; } } - /* find closest color for those colors we are not using */ + /* Find closest color for those colors we are not using */ for (i = 0; i < num_palette; i++) { if ((int)png_ptr->dither_index[i] >= maximum_colors) { int min_d, k, min_k, d_index; - /* find the closest color to one we threw out */ + /* Find the closest color to one we threw out */ d_index = png_ptr->dither_index[i]; min_d = PNG_COLOR_DIST(palette[d_index], palette[0]); for (k = 1, min_k = 0; k < maximum_colors; k++) @@ -268,7 +289,7 @@ png_set_dither(png_structp png_ptr, png_colorp palette, min_k = k; } } - /* point to closest color */ + /* Point to closest color */ png_ptr->dither_index[i] = (png_byte)min_k; } } @@ -279,13 +300,13 @@ png_set_dither(png_structp png_ptr, png_colorp palette, else { /* This is much harder to do simply (and quickly). Perhaps - we need to go through a median cut routine, but those - don't always behave themselves with only a few colors - as input. So we will just find the closest two colors, - and throw out one of them (chosen somewhat randomly). - [We don't understand this at all, so if someone wants to - work on improving it, be our guest - AED, GRP] - */ + * we need to go through a median cut routine, but those + * don't always behave themselves with only a few colors + * as input. So we will just find the closest two colors, + * and throw out one of them (chosen somewhat randomly). + * [We don't understand this at all, so if someone wants to + * work on improving it, be our guest - AED, GRP] + */ int i; int max_d; int num_new_palette; @@ -294,13 +315,13 @@ png_set_dither(png_structp png_ptr, png_colorp palette, t = NULL; - /* initialize palette index arrays */ + /* Initialize palette index arrays */ png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_palette * png_sizeof(png_byte))); png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_palette * png_sizeof(png_byte))); - /* initialize the sort array */ + /* Initialize the sort array */ for (i = 0; i < num_palette; i++) { png_ptr->index_to_palette[i] = (png_byte)i; @@ -313,14 +334,14 @@ png_set_dither(png_structp png_ptr, png_colorp palette, num_new_palette = num_palette; - /* initial wild guess at how far apart the farthest pixel - pair we will be eliminating will be. Larger - numbers mean more areas will be allocated, Smaller - numbers run the risk of not saving enough data, and - having to do this all over again. - - I have not done extensive checking on this number. - */ + /* Initial wild guess at how far apart the farthest pixel + * pair we will be eliminating will be. Larger + * numbers mean more areas will be allocated, Smaller + * numbers run the risk of not saving enough data, and + * having to do this all over again. + * + * I have not done extensive checking on this number. + */ max_d = 96; while (num_new_palette > maximum_colors) @@ -455,10 +476,8 @@ png_set_dither(png_structp png_ptr, png_colorp palette, int num_green = (1 << PNG_DITHER_GREEN_BITS); int num_blue = (1 << PNG_DITHER_BLUE_BITS); png_size_t num_entries = ((png_size_t)1 << total_bits); - png_ptr->palette_lookup = (png_bytep )png_malloc(png_ptr, (png_uint_32)(num_entries * png_sizeof(png_byte))); - png_memset(png_ptr->palette_lookup, 0, num_entries * png_sizeof(png_byte)); @@ -525,7 +544,8 @@ void PNGAPI png_set_gamma(png_structp png_ptr, double scrn_gamma, double file_gamma) { png_debug(1, "in png_set_gamma"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; if ((fabs(scrn_gamma * file_gamma - 1.0) > PNG_GAMMA_THRESHOLD) || (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) || (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)) @@ -544,7 +564,8 @@ void PNGAPI png_set_expand(png_structp png_ptr) { png_debug(1, "in png_set_expand"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); png_ptr->flags &= ~PNG_FLAG_ROW_INIT; } @@ -571,7 +592,8 @@ void PNGAPI png_set_palette_to_rgb(png_structp png_ptr) { png_debug(1, "in png_set_palette_to_rgb"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); png_ptr->flags &= ~PNG_FLAG_ROW_INIT; } @@ -582,7 +604,8 @@ void PNGAPI png_set_expand_gray_1_2_4_to_8(png_structp png_ptr) { png_debug(1, "in png_set_expand_gray_1_2_4_to_8"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= PNG_EXPAND; png_ptr->flags &= ~PNG_FLAG_ROW_INIT; } @@ -595,7 +618,8 @@ void PNGAPI png_set_gray_1_2_4_to_8(png_structp png_ptr) { png_debug(1, "in png_set_gray_1_2_4_to_8"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); } #endif @@ -631,10 +655,11 @@ void PNGAPI png_set_rgb_to_gray(png_structp png_ptr, int error_action, double red, double green) { - int red_fixed = (int)((float)red*100000.0 + 0.5); - int green_fixed = (int)((float)green*100000.0 + 0.5); - if (png_ptr == NULL) return; - png_set_rgb_to_gray_fixed(png_ptr, error_action, red_fixed, green_fixed); + int red_fixed = (int)((float)red*100000.0 + 0.5); + int green_fixed = (int)((float)green*100000.0 + 0.5); + if (png_ptr == NULL) + return; + png_set_rgb_to_gray_fixed(png_ptr, error_action, red_fixed, green_fixed); } #endif @@ -643,13 +668,16 @@ png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action, png_fixed_point red, png_fixed_point green) { png_debug(1, "in png_set_rgb_to_gray"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; switch(error_action) { case 1: png_ptr->transformations |= PNG_RGB_TO_GRAY; break; + case 2: png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN; break; + case 3: png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR; } if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) @@ -671,8 +699,8 @@ png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action, } else if (red + green < 100000L) { - red_int = (png_uint_16)(((png_uint_32)red*32768L)/100000L); - green_int = (png_uint_16)(((png_uint_32)green*32768L)/100000L); + red_int = (png_uint_16)(((png_uint_32)red*32768L)/100000L); + green_int = (png_uint_16)(((png_uint_32)green*32768L)/100000L); } else { @@ -689,14 +717,15 @@ png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action, #endif #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_LEGACY_SUPPORTED) + defined(PNG_LEGACY_SUPPORTED) || \ + defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) void PNGAPI png_set_read_user_transform_fn(png_structp png_ptr, png_user_transform_ptr read_user_transform_fn) { png_debug(1, "in png_set_read_user_transform_fn"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) png_ptr->transformations |= PNG_USER_TRANSFORM; png_ptr->read_user_transform_fn = read_user_transform_fn; @@ -729,8 +758,9 @@ png_init_read_transformations(png_structp png_ptr) #if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED) /* Detect gray background and attempt to enable optimization - * for gray --> RGB case */ - /* Note: if PNG_BACKGROUND_EXPAND is set and color_type is either RGB or + * for gray --> RGB case + * + * Note: if PNG_BACKGROUND_EXPAND is set and color_type is either RGB or * RGB_ALPHA (in which case need_expand is superfluous anyway), the * background color might actually be gray yet not be flagged as such. * This is not a problem for the current code, which uses @@ -757,7 +787,7 @@ png_init_read_transformations(png_structp png_ptr) { if (!(color_type & PNG_COLOR_MASK_COLOR)) /* i.e., GRAY or GRAY_ALPHA */ { - /* expand background and tRNS chunks */ + /* Expand background and tRNS chunks */ switch (png_ptr->bit_depth) { case 1: @@ -771,6 +801,7 @@ png_init_read_transformations(png_structp png_ptr) = png_ptr->trans_values.blue = png_ptr->trans_values.gray; } break; + case 2: png_ptr->background.gray *= (png_uint_16)0x55; png_ptr->background.red = png_ptr->background.green @@ -782,6 +813,7 @@ png_init_read_transformations(png_structp png_ptr) = png_ptr->trans_values.blue = png_ptr->trans_values.gray; } break; + case 4: png_ptr->background.gray *= (png_uint_16)0x11; png_ptr->background.red = png_ptr->background.green @@ -793,7 +825,9 @@ png_init_read_transformations(png_structp png_ptr) = png_ptr->trans_values.blue = png_ptr->trans_values.gray; } break; + case 8: + case 16: png_ptr->background.red = png_ptr->background.green = png_ptr->background.blue = png_ptr->background.gray; @@ -816,8 +850,9 @@ png_init_read_transformations(png_structp png_ptr) if (!(png_ptr->transformations & PNG_EXPAND_tRNS)) #endif { - /* invert the alpha channel (in tRNS) unless the pixels are - going to be expanded, in which case leave it for later */ + /* Invert the alpha channel (in tRNS) unless the pixels are + * going to be expanded, in which case leave it for later + */ int i, istop; istop=(int)png_ptr->num_trans; for (i=0; i<istop; i++) @@ -844,7 +879,7 @@ png_init_read_transformations(png_structp png_ptr) for (i=0; i<png_ptr->num_trans; i++) { if (png_ptr->trans[i] != 0 && png_ptr->trans[i] != 0xff) - k=1; /* partial transparency is present */ + k=1; /* Partial transparency is present */ } if (k == 0) png_ptr->transformations &= ~PNG_GAMMA; @@ -859,8 +894,7 @@ png_init_read_transformations(png_structp png_ptr) { if (color_type == PNG_COLOR_TYPE_PALETTE) { - /* could skip if no transparency and - */ + /* Could skip if no transparency */ png_color back, back_1; png_colorp palette = png_ptr->palette; int num_palette = png_ptr->num_palette; @@ -885,10 +919,12 @@ png_init_read_transformations(png_structp png_ptr) g = (png_ptr->screen_gamma); gs = 1.0; break; + case PNG_BACKGROUND_GAMMA_FILE: g = 1.0 / (png_ptr->gamma); gs = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma); break; + case PNG_BACKGROUND_GAMMA_UNIQUE: g = 1.0 / (png_ptr->background_gamma); gs = 1.0 / (png_ptr->background_gamma * @@ -977,10 +1013,12 @@ png_init_read_transformations(png_structp png_ptr) g = (png_ptr->screen_gamma); gs = 1.0; break; + case PNG_BACKGROUND_GAMMA_FILE: g = 1.0 / (png_ptr->gamma); gs = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma); break; + case PNG_BACKGROUND_GAMMA_UNIQUE: g = 1.0 / (png_ptr->background_gamma); gs = 1.0 / (png_ptr->background_gamma * @@ -1022,7 +1060,7 @@ png_init_read_transformations(png_structp png_ptr) } } else - /* transformation does not include PNG_BACKGROUND */ + /* Transformation does not include PNG_BACKGROUND */ #endif /* PNG_READ_BACKGROUND_SUPPORTED */ if (color_type == PNG_COLOR_TYPE_PALETTE) { @@ -1142,10 +1180,6 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr) { if (png_ptr->transformations & PNG_EXPAND_tRNS) info_ptr->color_type |= PNG_COLOR_MASK_ALPHA; -#if 0 /* Removed from libpng-1.2.27 */ - else - info_ptr->color_type |= PNG_COLOR_MASK_COLOR; -#endif } if (info_ptr->bit_depth < 8) info_ptr->bit_depth = 8; @@ -1194,8 +1228,8 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr) if (png_ptr->transformations & PNG_DITHER) { if (((info_ptr->color_type == PNG_COLOR_TYPE_RGB) || - (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) && - png_ptr->palette_lookup && info_ptr->bit_depth == 8) + (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) && + png_ptr->palette_lookup && info_ptr->bit_depth == 8) { info_ptr->color_type = PNG_COLOR_TYPE_PALETTE; } @@ -1229,7 +1263,7 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr) (info_ptr->color_type == PNG_COLOR_TYPE_GRAY))) { info_ptr->channels++; - /* if adding a true alpha channel not just filler */ + /* If adding a true alpha channel not just filler */ #if !defined(PNG_1_0_X) if (png_ptr->transformations & PNG_ADD_ALPHA) info_ptr->color_type |= PNG_COLOR_MASK_ALPHA; @@ -1284,7 +1318,8 @@ png_do_read_transformations(png_structp png_ptr) if (!(png_ptr->flags & PNG_FLAG_ROW_INIT)) /* Application has failed to call either png_read_start_image() * or png_read_update_info() after setting transforms that expand - * pixels. This check added to libpng-1.2.19 */ + * pixels. This check added to libpng-1.2.19 + */ #if (PNG_WARN_UNINITIALIZED_ROW==1) png_error(png_ptr, "Uninitialized row"); #else @@ -1337,39 +1372,41 @@ png_do_read_transformations(png_structp png_ptr) } #endif -/* -From Andreas Dilger e-mail to png-implement, 26 March 1998: - - In most cases, the "simple transparency" should be done prior to doing - gray-to-RGB, or you will have to test 3x as many bytes to check if a - pixel is transparent. You would also need to make sure that the - transparency information is upgraded to RGB. - - To summarize, the current flow is: - - Gray + simple transparency -> compare 1 or 2 gray bytes and composite - with background "in place" if transparent, - convert to RGB if necessary - - Gray + alpha -> composite with gray background and remove alpha bytes, - convert to RGB if necessary - - To support RGB backgrounds for gray images we need: - - Gray + simple transparency -> convert to RGB + simple transparency, compare - 3 or 6 bytes and composite with background - "in place" if transparent (3x compare/pixel - compared to doing composite with gray bkgrnd) - - Gray + alpha -> convert to RGB + alpha, composite with background and - remove alpha bytes (3x float operations/pixel - compared with composite on gray background) - - Greg's change will do this. The reason it wasn't done before is for - performance, as this increases the per-pixel operations. If we would check - in advance if the background was gray or RGB, and position the gray-to-RGB - transform appropriately, then it would save a lot of work/time. +/* From Andreas Dilger e-mail to png-implement, 26 March 1998: + * + * In most cases, the "simple transparency" should be done prior to doing + * gray-to-RGB, or you will have to test 3x as many bytes to check if a + * pixel is transparent. You would also need to make sure that the + * transparency information is upgraded to RGB. + * + * To summarize, the current flow is: + * - Gray + simple transparency -> compare 1 or 2 gray bytes and composite + * with background "in place" if transparent, + * convert to RGB if necessary + * - Gray + alpha -> composite with gray background and remove alpha bytes, + * convert to RGB if necessary + * + * To support RGB backgrounds for gray images we need: + * - Gray + simple transparency -> convert to RGB + simple transparency, + * compare 3 or 6 bytes and composite with + * background "in place" if transparent + * (3x compare/pixel compared to doing + * composite with gray bkgrnd) + * - Gray + alpha -> convert to RGB + alpha, composite with background and + * remove alpha bytes (3x float + * operations/pixel compared with composite + * on gray background) + * + * Greg's change will do this. The reason it wasn't done before is for + * performance, as this increases the per-pixel operations. If we would check + * in advance if the background was gray or RGB, and position the gray-to-RGB + * transform appropriately, then it would save a lot of work/time. */ #if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED) - /* if gray -> RGB, do so now only if background is non-gray; else do later - * for performance reasons */ + /* If gray -> RGB, do so now only if background is non-gray; else do later + * for performance reasons + */ if ((png_ptr->transformations & PNG_GRAY_TO_RGB) && !(png_ptr->mode & PNG_BACKGROUND_IS_GRAY)) png_do_gray_to_rgb(&(png_ptr->row_info), png_ptr->row_buf + 1); @@ -1394,14 +1431,14 @@ From Andreas Dilger e-mail to png-implement, 26 March 1998: #if defined(PNG_READ_GAMMA_SUPPORTED) if ((png_ptr->transformations & PNG_GAMMA) && #if defined(PNG_READ_BACKGROUND_SUPPORTED) - !((png_ptr->transformations & PNG_BACKGROUND) && - ((png_ptr->num_trans != 0) || - (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) && + !((png_ptr->transformations & PNG_BACKGROUND) && + ((png_ptr->num_trans != 0) || + (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) && #endif - (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)) + (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)) png_do_gamma(&(png_ptr->row_info), png_ptr->row_buf + 1, - png_ptr->gamma_table, png_ptr->gamma_16_table, - png_ptr->gamma_shift); + png_ptr->gamma_table, png_ptr->gamma_16_table, + png_ptr->gamma_shift); #endif #if defined(PNG_READ_16_TO_8_SUPPORTED) @@ -1446,7 +1483,7 @@ From Andreas Dilger e-mail to png-implement, 26 March 1998: #endif #if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED) - /* if gray -> RGB, do so now only if we did not do so above */ + /* If gray -> RGB, do so now only if we did not do so above */ if ((png_ptr->transformations & PNG_GRAY_TO_RGB) && (png_ptr->mode & PNG_BACKGROUND_IS_GRAY)) png_do_gray_to_rgb(&(png_ptr->row_info), png_ptr->row_buf + 1); @@ -1477,16 +1514,16 @@ From Andreas Dilger e-mail to png-implement, 26 March 1998: if (png_ptr->transformations & PNG_USER_TRANSFORM) { if (png_ptr->read_user_transform_fn != NULL) - (*(png_ptr->read_user_transform_fn)) /* user read transform function */ - (png_ptr, /* png_ptr */ - &(png_ptr->row_info), /* row_info: */ - /* png_uint_32 width; width of row */ - /* png_uint_32 rowbytes; number of bytes in row */ - /* png_byte color_type; color type of pixels */ - /* png_byte bit_depth; bit depth of samples */ - /* png_byte channels; number of channels (1-4) */ - /* png_byte pixel_depth; bits per pixel (depth*channels) */ - png_ptr->row_buf + 1); /* start of pixel data for row */ + (*(png_ptr->read_user_transform_fn)) /* User read transform function */ + (png_ptr, /* png_ptr */ + &(png_ptr->row_info), /* row_info: */ + /* png_uint_32 width; width of row */ + /* png_uint_32 rowbytes; number of bytes in row */ + /* png_byte color_type; color type of pixels */ + /* png_byte bit_depth; bit depth of samples */ + /* png_byte channels; number of channels (1-4) */ + /* png_byte pixel_depth; bits per pixel (depth*channels) */ + png_ptr->row_buf + 1); /* start of pixel data for row */ #if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) if (png_ptr->user_transform_depth) png_ptr->row_info.bit_depth = png_ptr->user_transform_depth; @@ -1544,6 +1581,7 @@ png_do_unpack(png_row_infop row_info, png_bytep row) } break; } + case 2: { @@ -1565,6 +1603,7 @@ png_do_unpack(png_row_infop row_info, png_bytep row) } break; } + case 4: { png_bytep sp = row + (png_size_t)((row_width - 1) >> 1); @@ -1656,6 +1695,7 @@ png_do_unshift(png_row_infop row_info, png_bytep row, png_color_8p sig_bits) } break; } + case 4: { png_bytep bp = row; @@ -1671,6 +1711,7 @@ png_do_unshift(png_row_infop row_info, png_bytep row, png_color_8p sig_bits) } break; } + case 8: { png_bytep bp = row; @@ -1683,6 +1724,7 @@ png_do_unshift(png_row_infop row_info, png_bytep row, png_color_8p sig_bits) } break; } + case 16: { png_bytep bp = row; @@ -1704,7 +1746,7 @@ png_do_unshift(png_row_infop row_info, png_bytep row, png_color_8p sig_bits) #endif #if defined(PNG_READ_16_TO_8_SUPPORTED) -/* chop rows of bit depth 16 down to 8 */ +/* Chop rows of bit depth 16 down to 8 */ void /* PRIVATE */ png_do_chop(png_row_infop row_info, png_bytep row) { @@ -1728,14 +1770,17 @@ png_do_chop(png_row_infop row_info, png_bytep row) * * What the ideal calculation should be: * *dp = (((((png_uint_32)(*sp) << 8) | - * (png_uint_32)(*(sp + 1))) * 255 + 127) / (png_uint_32)65535L; + * (png_uint_32)(*(sp + 1))) * 255 + 127) + * / (png_uint_32)65535L; * * GRR: no, I think this is what it really should be: * *dp = (((((png_uint_32)(*sp) << 8) | - * (png_uint_32)(*(sp + 1))) + 128L) / (png_uint_32)257L; + * (png_uint_32)(*(sp + 1))) + 128L) + * / (png_uint_32)257L; * * GRR: here's the exact calculation with shifts: - * temp = (((png_uint_32)(*sp) << 8) | (png_uint_32)(*(sp + 1))) + 128L; + * temp = (((png_uint_32)(*sp) << 8) | + * (png_uint_32)(*(sp + 1))) + 128L; * *dp = (temp - (temp >> 8)) >> 8; * * Approximate calculation with shift/add instead of multiply/divide: @@ -2125,7 +2170,7 @@ png_do_read_filler(png_row_infop row_info, png_bytep row, #endif #if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED) -/* expand grayscale files to RGB, with or without alpha */ +/* Expand grayscale files to RGB, with or without alpha */ void /* PRIVATE */ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row) { @@ -2208,7 +2253,7 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row) #endif #if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) -/* reduce RGB files to grayscale, with or without alpha +/* Reduce RGB files to grayscale, with or without alpha * using the equation given in Poynton's ColorFAQ at * <http://www.inforamp.net/~poynton/> (THIS LINK IS DEAD June 2008) * New link: @@ -2486,18 +2531,22 @@ png_build_grayscale_palette(int bit_depth, png_colorp palette) num_palette = 2; color_inc = 0xff; break; + case 2: num_palette = 4; color_inc = 0x55; break; + case 4: num_palette = 16; color_inc = 0x11; break; + case 8: num_palette = 256; color_inc = 1; break; + default: num_palette = 0; color_inc = 0; @@ -2675,7 +2724,7 @@ png_correct_palette(png_structp png_ptr, png_colorp palette, } } } - else /* assume grayscale palette (what else could it be?) */ + else /* Assume grayscale palette (what else could it be?) */ { int i; @@ -2751,6 +2800,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } break; } + case 2: { #if defined(PNG_READ_GAMMA_SUPPORTED) @@ -2807,6 +2857,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } break; } + case 4: { #if defined(PNG_READ_GAMMA_SUPPORTED) @@ -2863,6 +2914,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } break; } + case 8: { #if defined(PNG_READ_GAMMA_SUPPORTED) @@ -2895,6 +2947,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } break; } + case 16: { #if defined(PNG_READ_GAMMA_SUPPORTED) @@ -2908,7 +2961,7 @@ png_do_background(png_row_infop row_info, png_bytep row, v = (png_uint_16)(((*sp) << 8) + *(sp + 1)); if (v == trans_values->gray) { - /* background is already in screen gamma */ + /* Background is already in screen gamma */ *sp = (png_byte)((background->gray >> 8) & 0xff); *(sp + 1) = (png_byte)(background->gray & 0xff); } @@ -2941,6 +2994,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } break; } + case PNG_COLOR_TYPE_RGB: { if (row_info->bit_depth == 8) @@ -2998,7 +3052,7 @@ png_do_background(png_row_infop row_info, png_bytep row, if (r == trans_values->red && g == trans_values->green && b == trans_values->blue) { - /* background is already in screen gamma */ + /* Background is already in screen gamma */ *sp = (png_byte)((background->red >> 8) & 0xff); *(sp + 1) = (png_byte)(background->red & 0xff); *(sp + 2) = (png_byte)((background->green >> 8) & 0xff); @@ -3045,6 +3099,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } break; } + case PNG_COLOR_TYPE_GRAY_ALPHA: { if (row_info->bit_depth == 8) @@ -3065,7 +3120,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } else if (a == 0) { - /* background is already in screen gamma */ + /* Background is already in screen gamma */ *dp = (png_byte)background->gray; } else @@ -3132,7 +3187,7 @@ png_do_background(png_row_infop row_info, png_bytep row, else #endif { - /* background is already in screen gamma */ + /* Background is already in screen gamma */ *dp = (png_byte)((background->gray >> 8) & 0xff); *(dp + 1) = (png_byte)(background->gray & 0xff); } @@ -3187,6 +3242,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } break; } + case PNG_COLOR_TYPE_RGB_ALPHA: { if (row_info->bit_depth == 8) @@ -3209,7 +3265,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } else if (a == 0) { - /* background is already in screen gamma */ + /* Background is already in screen gamma */ *dp = (png_byte)background->red; *(dp + 1) = (png_byte)background->green; *(dp + 2) = (png_byte)background->blue; @@ -3290,7 +3346,7 @@ png_do_background(png_row_infop row_info, png_bytep row, } else if (a == 0) { - /* background is already in screen gamma */ + /* Background is already in screen gamma */ *dp = (png_byte)((background->red >> 8) & 0xff); *(dp + 1) = (png_byte)(background->red & 0xff); *(dp + 2) = (png_byte)((background->green >> 8) & 0xff); @@ -3445,6 +3501,7 @@ png_do_gamma(png_row_infop row_info, png_bytep row, } break; } + case PNG_COLOR_TYPE_RGB_ALPHA: { if (row_info->bit_depth == 8) @@ -3482,6 +3539,7 @@ png_do_gamma(png_row_infop row_info, png_bytep row, } break; } + case PNG_COLOR_TYPE_GRAY_ALPHA: { if (row_info->bit_depth == 8) @@ -3506,6 +3564,7 @@ png_do_gamma(png_row_infop row_info, png_bytep row, } break; } + case PNG_COLOR_TYPE_GRAY: { if (row_info->bit_depth == 2) @@ -3526,6 +3585,7 @@ png_do_gamma(png_row_infop row_info, png_bytep row, sp++; } } + if (row_info->bit_depth == 4) { sp = row; @@ -3539,6 +3599,7 @@ png_do_gamma(png_row_infop row_info, png_bytep row, sp++; } } + else if (row_info->bit_depth == 8) { sp = row; @@ -3548,6 +3609,7 @@ png_do_gamma(png_row_infop row_info, png_bytep row, sp++; } } + else if (row_info->bit_depth == 16) { sp = row; @@ -3613,6 +3675,7 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row, } break; } + case 2: { sp = row + (png_size_t)((row_width - 1) >> 2); @@ -3634,6 +3697,7 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row, } break; } + case 4: { sp = row + (png_size_t)((row_width - 1) >> 1); @@ -3698,6 +3762,7 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row, *dp-- = palette[*sp].red; sp--; } + row_info->bit_depth = 8; row_info->pixel_depth = 24; row_info->rowbytes = row_width * 3; @@ -3759,6 +3824,7 @@ png_do_expand(png_row_infop row_info, png_bytep row, } break; } + case 2: { gray = (png_uint_16)((gray&0x03)*0x55); @@ -3782,6 +3848,7 @@ png_do_expand(png_row_infop row_info, png_bytep row, } break; } + case 4: { gray = (png_uint_16)((gray&0x0f)*0x11); @@ -3805,6 +3872,7 @@ png_do_expand(png_row_infop row_info, png_bytep row, break; } } + row_info->bit_depth = 8; row_info->pixel_depth = 8; row_info->rowbytes = row_width; @@ -3826,6 +3894,7 @@ png_do_expand(png_row_infop row_info, png_bytep row, *dp-- = *sp--; } } + else if (row_info->bit_depth == 16) { png_byte gray_high = (gray >> 8) & 0xff; @@ -3848,6 +3917,7 @@ png_do_expand(png_row_infop row_info, png_bytep row, *dp-- = *sp--; } } + row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA; row_info->channels = 2; row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1); @@ -3945,13 +4015,13 @@ png_do_dither(png_row_infop row_info, png_bytep row, g = *sp++; b = *sp++; - /* this looks real messy, but the compiler will reduce - it down to a reasonable formula. For example, with - 5 bits per color, we get: - p = (((r >> 3) & 0x1f) << 10) | - (((g >> 3) & 0x1f) << 5) | - ((b >> 3) & 0x1f); - */ + /* This looks real messy, but the compiler will reduce + * it down to a reasonable formula. For example, with + * 5 bits per color, we get: + * p = (((r >> 3) & 0x1f) << 10) | + * (((g >> 3) & 0x1f) << 5) | + * ((b >> 3) & 0x1f); + */ p = (((r >> (8 - PNG_DITHER_RED_BITS)) & ((1 << PNG_DITHER_RED_BITS) - 1)) << (PNG_DITHER_GREEN_BITS + PNG_DITHER_BLUE_BITS)) | @@ -4032,6 +4102,7 @@ png_build_gamma_table(png_structp png_ptr) if (png_ptr->screen_gamma > .000001) g = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma); + else g = 1.0; @@ -4066,8 +4137,9 @@ png_build_gamma_table(png_structp png_ptr) if (png_ptr->screen_gamma > 0.000001) g = 1.0 / png_ptr->screen_gamma; + else - g = png_ptr->gamma; /* probably doing rgb_to_gray */ + g = png_ptr->gamma; /* Probably doing rgb_to_gray */ for (i = 0; i < 256; i++) { @@ -4088,8 +4160,10 @@ png_build_gamma_table(png_structp png_ptr) if (png_ptr->color_type & PNG_COLOR_MASK_COLOR) { sig_bit = (int)png_ptr->sig_bit.red; + if ((int)png_ptr->sig_bit.green > sig_bit) sig_bit = png_ptr->sig_bit.green; + if ((int)png_ptr->sig_bit.blue > sig_bit) sig_bit = png_ptr->sig_bit.blue; } @@ -4100,6 +4174,7 @@ png_build_gamma_table(png_structp png_ptr) if (sig_bit > 0) shift = 16 - sig_bit; + else shift = 0; @@ -4111,6 +4186,7 @@ png_build_gamma_table(png_structp png_ptr) if (shift > 8) shift = 8; + if (shift < 0) shift = 0; @@ -4125,14 +4201,13 @@ png_build_gamma_table(png_structp png_ptr) png_ptr->gamma_16_table = (png_uint_16pp)png_malloc(png_ptr, (png_uint_32)(num * png_sizeof(png_uint_16p))); + png_memset(png_ptr->gamma_16_table, 0, num * png_sizeof(png_uint_16p)); if (png_ptr->transformations & (PNG_16_TO_8 | PNG_BACKGROUND)) { double fin, fout; png_uint_32 last, max; - png_memset(png_ptr->gamma_16_table, 0, num * png_sizeof(png_uint_16p)); - for (i = 0; i < num; i++) { png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr, @@ -4169,6 +4244,7 @@ png_build_gamma_table(png_structp png_ptr) (png_uint_32)(256 * png_sizeof(png_uint_16))); ig = (((png_uint_32)i * (png_uint_32)png_gamma_shift[shift]) >> 4); + for (j = 0; j < 256; j++) { png_ptr->gamma_16_table[i][j] = @@ -4187,8 +4263,7 @@ png_build_gamma_table(png_structp png_ptr) png_ptr->gamma_16_to_1 = (png_uint_16pp)png_malloc(png_ptr, (png_uint_32)(num * png_sizeof(png_uint_16p ))); - - png_memset(png_ptr->gamma_16_to_1, 0, num * png_sizeof(png_uint_16p)); + png_memset(png_ptr->gamma_16_to_1, 0, num * png_sizeof(png_uint_16p)); for (i = 0; i < num; i++) { @@ -4207,14 +4282,14 @@ png_build_gamma_table(png_structp png_ptr) if (png_ptr->screen_gamma > 0.000001) g = 1.0 / png_ptr->screen_gamma; + else - g = png_ptr->gamma; /* probably doing rgb_to_gray */ + g = png_ptr->gamma; /* Probably doing rgb_to_gray */ png_ptr->gamma_16_from_1 = (png_uint_16pp)png_malloc(png_ptr, (png_uint_32)(num * png_sizeof(png_uint_16p))); - png_memset(png_ptr->gamma_16_from_1, 0, - num * png_sizeof(png_uint_16p)); + num * png_sizeof(png_uint_16p)); for (i = 0; i < num; i++) { @@ -4223,6 +4298,7 @@ png_build_gamma_table(png_structp png_ptr) ig = (((png_uint_32)i * (png_uint_32)png_gamma_shift[shift]) >> 4); + for (j = 0; j < 256; j++) { png_ptr->gamma_16_from_1[i][j] = @@ -4239,7 +4315,7 @@ png_build_gamma_table(png_structp png_ptr) #endif #if defined(PNG_MNG_FEATURES_SUPPORTED) -/* undoes intrapixel differencing */ +/* Undoes intrapixel differencing */ void /* PRIVATE */ png_do_read_intrapixel(png_row_infop row_info, png_bytep row) { @@ -4259,8 +4335,10 @@ png_do_read_intrapixel(png_row_infop row_info, png_bytep row) if (row_info->color_type == PNG_COLOR_TYPE_RGB) bytes_per_pixel = 3; + else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) bytes_per_pixel = 4; + else return; @@ -4277,8 +4355,10 @@ png_do_read_intrapixel(png_row_infop row_info, png_bytep row) if (row_info->color_type == PNG_COLOR_TYPE_RGB) bytes_per_pixel = 6; + else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) bytes_per_pixel = 8; + else return; @@ -1,12 +1,15 @@ /* pngrutil.c - utilities to read a PNG file * - * Last changed in libpng 1.2.34 [December 18, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.38 [July 16, 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.) * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * This file contains routines that are only called from within * libpng itself during the course of reading an image. */ @@ -21,7 +24,7 @@ #ifdef PNG_FLOATING_POINT_SUPPORTED # if defined(WIN32_WCE_OLD) -/* strtod() function is not supported on WindowsCE */ +/* The strtod() function is not supported on WindowsCE */ __inline double png_strtod(png_structp png_ptr, PNG_CONST char *nptr, char **endptr) { double result = 0; @@ -76,7 +79,8 @@ png_get_uint_32(png_bytep buf) /* Grab a signed 32-bit integer from a buffer in big-endian format. The * data is stored in the PNG file in two's complement format, and it is - * assumed that the machine format for signed integers is the same. */ + * assumed that the machine format for signed integers is the same. + */ png_int_32 PNGAPI png_get_int_32(png_bytep buf) { @@ -108,21 +112,21 @@ png_read_chunk_header(png_structp png_ptr) png_byte buf[8]; png_uint_32 length; - /* read the length and the chunk name */ + /* Read the length and the chunk name */ png_read_data(png_ptr, buf, 8); length = png_get_uint_31(png_ptr, buf); - /* put the chunk name into png_ptr->chunk_name */ + /* Put the chunk name into png_ptr->chunk_name */ png_memcpy(png_ptr->chunk_name, buf + 4, 4); png_debug2(0, "Reading %s chunk, length = %lu", png_ptr->chunk_name, length); - /* reset the crc and run it over the chunk name */ + /* Reset the crc and run it over the chunk name */ png_reset_crc(png_ptr); png_calculate_crc(png_ptr, png_ptr->chunk_name, 4); - /* check to see if chunk name is valid */ + /* Check to see if chunk name is valid */ png_check_chunk_name(png_ptr, png_ptr->chunk_name); return length; @@ -132,15 +136,17 @@ png_read_chunk_header(png_structp png_ptr) void /* PRIVATE */ png_crc_read(png_structp png_ptr, png_bytep buf, png_size_t length) { - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_read_data(png_ptr, buf, length); png_calculate_crc(png_ptr, buf, length); } /* Optionally skip data and then check the CRC. Depending on whether we - are reading a ancillary or critical chunk, and how the program has set - things up, we may calculate the CRC on the data and print a message. - Returns '1' if there was a CRC error, '0' otherwise. */ + * are reading a ancillary or critical chunk, and how the program has set + * things up, we may calculate the CRC on the data and print a message. + * Returns '1' if there was a CRC error, '0' otherwise. + */ int /* PRIVATE */ png_crc_finish(png_structp png_ptr, png_uint_32 skip) { @@ -159,7 +165,7 @@ png_crc_finish(png_structp png_ptr, png_uint_32 skip) if (png_crc_error(png_ptr)) { if (((png_ptr->chunk_name[0] & 0x20) && /* Ancillary */ - !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)) || + !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)) || (!(png_ptr->chunk_name[0] & 0x20) && /* Critical */ (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE))) { @@ -176,7 +182,8 @@ png_crc_finish(png_structp png_ptr, png_uint_32 skip) } /* Compare the CRC stored in the PNG file with that calculated by libpng from - the data it has read thus far. */ + * the data it has read thus far. + */ int /* PRIVATE */ png_crc_error(png_structp png_ptr) { @@ -331,14 +338,17 @@ png_decompress_chunk(png_structp png_ptr, int comp_type, png_snprintf(umsg, 52, "Buffer error in compressed datastream in %s chunk", png_ptr->chunk_name); + else if (ret == Z_DATA_ERROR) png_snprintf(umsg, 52, "Data error in compressed datastream in %s chunk", png_ptr->chunk_name); + else png_snprintf(umsg, 52, "Incomplete compressed datastream in %s chunk", png_ptr->chunk_name); + png_warning(png_ptr, umsg); #else png_warning(png_ptr, @@ -383,7 +393,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type, } #endif -/* read and check the IDHR chunk */ +/* Read and check the IDHR chunk */ void /* PRIVATE */ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) { @@ -397,7 +407,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) if (png_ptr->mode & PNG_HAVE_IHDR) png_error(png_ptr, "Out of place IHDR"); - /* check the length */ + /* Check the length */ if (length != 13) png_error(png_ptr, "Invalid IHDR chunk"); @@ -414,7 +424,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) filter_type = buf[11]; interlace_type = buf[12]; - /* set internal variables */ + /* Set internal variables */ png_ptr->width = width; png_ptr->height = height; png_ptr->bit_depth = (png_byte)bit_depth; @@ -425,25 +435,28 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) #endif png_ptr->compression_type = (png_byte)compression_type; - /* find number of channels */ + /* Find number of channels */ switch (png_ptr->color_type) { case PNG_COLOR_TYPE_GRAY: case PNG_COLOR_TYPE_PALETTE: png_ptr->channels = 1; break; + case PNG_COLOR_TYPE_RGB: png_ptr->channels = 3; break; + case PNG_COLOR_TYPE_GRAY_ALPHA: png_ptr->channels = 2; break; + case PNG_COLOR_TYPE_RGB_ALPHA: png_ptr->channels = 4; break; } - /* set up other useful info */ + /* Set up other useful info */ png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth * png_ptr->channels); png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width); @@ -454,7 +467,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) color_type, interlace_type, compression_type, filter_type); } -/* read and check the palette */ +/* Read and check the palette */ void /* PRIVATE */ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) { @@ -468,12 +481,14 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) if (!(png_ptr->mode & PNG_HAVE_IHDR)) png_error(png_ptr, "Missing IHDR before PLTE"); + else if (png_ptr->mode & PNG_HAVE_IDAT) { png_warning(png_ptr, "Invalid PLTE after IDAT"); png_crc_finish(png_ptr, length); return; } + else if (png_ptr->mode & PNG_HAVE_PLTE) png_error(png_ptr, "Duplicate PLTE chunk"); @@ -502,6 +517,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) png_crc_finish(png_ptr, length); return; } + else { png_error(png_ptr, "Invalid palette chunk"); @@ -526,7 +542,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) png_byte buf[3]; png_crc_read(png_ptr, buf, 3); - /* don't depend upon png_color being any order */ + /* Don't depend upon png_color being any order */ palette[i].red = buf[0]; palette[i].green = buf[1]; palette[i].blue = buf[2]; @@ -534,9 +550,10 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) #endif /* If we actually NEED the PLTE chunk (ie for a paletted image), we do - whatever the normal CRC configuration tells us. However, if we - have an RGB image, the PLTE can be considered ancillary, so - we will act as though it is. */ + * whatever the normal CRC configuration tells us. However, if we + * 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) if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) #endif @@ -611,7 +628,7 @@ png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) } png_crc_finish(png_ptr, length); - info_ptr = info_ptr; /* quiet compiler warnings about unused info_ptr */ + info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */ } #if defined(PNG_READ_gAMA_SUPPORTED) @@ -661,7 +678,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) return; igamma = (png_fixed_point)png_get_uint_32(buf); - /* check for zero gamma */ + /* Check for zero gamma */ if (igamma == 0) { png_warning(png_ptr, @@ -925,7 +942,7 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) return; intent = buf[0]; - /* check for bad intent */ + /* Check for bad intent */ if (intent >= PNG_sRGB_INTENT_LAST) { png_warning(png_ptr, "Unknown sRGB intent"); @@ -1040,12 +1057,13 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) png_ptr->chunkdata[slength] = 0x00; for (profile = png_ptr->chunkdata; *profile; profile++) - /* empty loop to find end of name */ ; + /* Empty loop to find end of name */ ; ++profile; - /* there should be at least one zero (the compression type byte) - following the separator, and we should be on it */ + /* There should be at least one zero (the compression type byte) + * following the separator, and we should be on it + */ if ( profile >= png_ptr->chunkdata + slength - 1) { png_free(png_ptr, png_ptr->chunkdata); @@ -1054,7 +1072,7 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) return; } - /* compression_type should always be zero */ + /* Compression_type should always be zero */ compression_type = *profile++; if (compression_type) { @@ -1152,10 +1170,10 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) png_ptr->chunkdata[slength] = 0x00; for (entry_start = (png_bytep)png_ptr->chunkdata; *entry_start; entry_start++) - /* empty loop to find end of name */ ; + /* Empty loop to find end of name */ ; ++entry_start; - /* a sample depth should follow the separator, and we should be on it */ + /* A sample depth should follow the separator, and we should be on it */ if (entry_start > (png_bytep)png_ptr->chunkdata + slength - 2) { png_free(png_ptr, png_ptr->chunkdata); @@ -1168,7 +1186,7 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) entry_size = (new_palette.depth == 8 ? 6 : 10); data_length = (slength - (entry_start - (png_bytep)png_ptr->chunkdata)); - /* integrity-check the data length */ + /* Integrity-check the data length */ if (data_length % entry_size) { png_free(png_ptr, png_ptr->chunkdata); @@ -1236,7 +1254,7 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) } #endif - /* discard all chunk data except the name and stash that */ + /* Discard all chunk data except the name and stash that */ new_palette.name = png_ptr->chunkdata; png_set_sPLT(png_ptr, info_ptr, &new_palette, 1); @@ -1572,7 +1590,7 @@ png_handle_oFFs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) #endif #if defined(PNG_READ_pCAL_SUPPORTED) -/* read the pCAL chunk (described in the PNG Extensions document) */ +/* 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) { @@ -1619,11 +1637,11 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) return; } - png_ptr->chunkdata[slength] = 0x00; /* null terminate the last string */ + png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */ png_debug(3, "Finding end of pCAL purpose string"); for (buf = png_ptr->chunkdata; *buf; buf++) - /* empty loop */ ; + /* Empty loop */ ; endptr = png_ptr->chunkdata + slength; @@ -1706,7 +1724,7 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) #endif #if defined(PNG_READ_sCAL_SUPPORTED) -/* read the sCAL chunk */ +/* Read the sCAL chunk */ void /* PRIVATE */ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) { @@ -1756,9 +1774,9 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) return; } - png_ptr->chunkdata[slength] = 0x00; /* null terminate the last string */ + png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */ - ep = png_ptr->chunkdata + 1; /* skip unit byte */ + ep = png_ptr->chunkdata + 1; /* Skip unit byte */ #ifdef PNG_FLOATING_POINT_SUPPORTED width = png_strtod(png_ptr, ep, &vp); @@ -1780,7 +1798,7 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) #endif for (ep = png_ptr->chunkdata; *ep; ep++) - /* empty loop */ ; + /* Empty loop */ ; ep++; if (png_ptr->chunkdata + slength < ep) @@ -1944,7 +1962,7 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) key[slength] = 0x00; for (text = key; *text; text++) - /* empty loop to find end of key */ ; + /* Empty loop to find end of key */ ; if (text != key + slength) text++; @@ -1979,7 +1997,7 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) #endif #if defined(PNG_READ_zTXt_SUPPORTED) -/* note: this does not correctly handle chunks that are > 64K under DOS */ +/* 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) { @@ -2028,7 +2046,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) png_ptr->chunkdata[slength] = 0x00; for (text = png_ptr->chunkdata; *text; text++) - /* empty loop */ ; + /* Empty loop */ ; /* zTXt must have some text after the chunkdataword */ if (text >= png_ptr->chunkdata + slength - 2) @@ -2046,7 +2064,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) png_warning(png_ptr, "Unknown compression type in zTXt chunk"); comp_type = PNG_TEXT_COMPRESSION_zTXt; } - text++; /* skip the compression_method byte */ + text++; /* Skip the compression_method byte */ } prefix_len = text - png_ptr->chunkdata; @@ -2083,7 +2101,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) #endif #if defined(PNG_READ_iTXt_SUPPORTED) -/* note: this does not correctly handle chunks that are > 64K under DOS */ +/* 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) { @@ -2133,12 +2151,13 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) png_ptr->chunkdata[slength] = 0x00; for (lang = png_ptr->chunkdata; *lang; lang++) - /* empty loop */ ; - lang++; /* skip NUL separator */ + /* Empty loop */ ; + lang++; /* Skip NUL separator */ /* iTXt must have a language tag (possibly empty), two compression bytes, - translated keyword (possibly empty), and possibly some text after the - keyword */ + * translated keyword (possibly empty), and possibly some text after the + * keyword + */ if (lang >= png_ptr->chunkdata + slength - 3) { @@ -2154,8 +2173,8 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) } for (lang_key = lang; *lang_key; lang_key++) - /* empty loop */ ; - lang_key++; /* skip NUL separator */ + /* Empty loop */ ; + lang_key++; /* Skip NUL separator */ if (lang_key >= png_ptr->chunkdata + slength) { @@ -2166,8 +2185,8 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) } for (text = lang_key; *text; text++) - /* empty loop */ ; - text++; /* skip NUL separator */ + /* Empty loop */ ; + text++; /* Skip NUL separator */ if (text >= png_ptr->chunkdata + slength) { png_warning(png_ptr, "Malformed iTXt chunk"); @@ -2229,13 +2248,13 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) #ifdef PNG_USE_LOCAL_ARRAYS PNG_CONST PNG_IDAT; #endif - if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) /* not an IDAT */ + if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) /* Not an IDAT */ png_ptr->mode |= PNG_AFTER_IDAT; } if (!(png_ptr->chunk_name[0] & 0x20)) { -#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) +#if defined(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) @@ -2247,8 +2266,11 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) } #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) - if ((png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS) || - (png_ptr->read_user_chunk_fn != NULL)) + if ((png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS) +#if defined(PNG_READ_USER_CHUNKS_SUPPORTED) + || (png_ptr->read_user_chunk_fn != NULL) +#endif + ) { #ifdef PNG_MAX_MALLOC_64K if (length > (png_uint_32)65535L) @@ -2259,7 +2281,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) } #endif png_memcpy((png_charp)png_ptr->unknown_chunk.name, - (png_charp)png_ptr->chunk_name, + (png_charp)png_ptr->chunk_name, png_sizeof(png_ptr->unknown_chunk.name)); png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] = '\0'; png_ptr->unknown_chunk.size = (png_size_t)length; @@ -2273,7 +2295,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) #if defined(PNG_READ_USER_CHUNKS_SUPPORTED) if (png_ptr->read_user_chunk_fn != NULL) { - /* callback to user unknown chunk handler */ + /* Callback to user unknown chunk handler */ int ret; ret = (*(png_ptr->read_user_chunk_fn)) (png_ptr, &png_ptr->unknown_chunk); @@ -2282,8 +2304,10 @@ 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) if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) != PNG_HANDLE_CHUNK_ALWAYS) +#endif png_chunk_error(png_ptr, "unknown critical chunk"); png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1); @@ -2302,7 +2326,7 @@ 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) - info_ptr = info_ptr; /* quiet compiler warnings about unused info_ptr */ + info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */ #endif } @@ -2550,8 +2574,8 @@ png_do_read_interlace(png_structp png_ptr) 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 */ + /* 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 @@ -2759,7 +2783,7 @@ png_do_read_interlace(png_structp png_ptr) row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width); } #if !defined(PNG_READ_PACKSWAP_SUPPORTED) - transformations = transformations; /* silence compiler warning */ + transformations = transformations; /* Silence compiler warning */ #endif } #endif /* PNG_READ_INTERLACING_SUPPORTED */ @@ -2843,7 +2867,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep row, rp++; } - for (i = 0; i < istop; i++) /* use leftover rp,pp */ + for (i = 0; i < istop; i++) /* Use leftover rp,pp */ { int a, b, c, pa, pb, pc, p; @@ -2887,23 +2911,24 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep row, } } +#ifndef PNG_NO_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 */ + /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - /* start of interlace block */ + /* Start of interlace block */ PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - /* offset to next interlace block */ + /* Offset to next interlace block */ PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - /* start of interlace block in the y direction */ + /* Start of interlace block in the y direction */ PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - /* offset to next interlace block in the y direction */ + /* 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 @@ -3018,24 +3043,25 @@ png_read_finish_row(png_structp png_ptr) png_ptr->mode |= PNG_AFTER_IDAT; } +#endif /* PNG_NO_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 */ + /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - /* start of interlace block */ + /* Start of interlace block */ PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - /* offset to next interlace block */ + /* Offset to next interlace block */ PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - /* start of interlace block in the y direction */ + /* Start of interlace block in the y direction */ PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - /* offset to next interlace block in the y direction */ + /* 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 @@ -3172,11 +3198,13 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) } #endif - /* align the width on the next larger 8 pixels. Mainly used - for interlacing */ + /* Align the width on the next larger 8 pixels. Mainly used + * for interlacing + */ row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7)); - /* calculate the maximum bytes needed, adding a byte and a pixel - for safety's sake */ + /* Calculate the maximum bytes needed, adding a byte and a pixel + * for safety's sake + */ row_bytes = PNG_ROWBYTES(max_pixel_depth, row_bytes) + 1 + ((max_pixel_depth + 7) >> 3); #ifdef PNG_MAX_MALLOC_64K @@ -3187,27 +3215,30 @@ 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); - png_ptr->row_buf = png_ptr->big_row_buf+32; - png_ptr->old_big_row_buf_size = row_bytes+64; + 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->row_buf = png_ptr->big_row_buf + 32; + png_ptr->old_big_row_buf_size = row_bytes + 64; } #ifdef PNG_MAX_MALLOC_64K - if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L) + if ((png_uint_32)row_bytes + 1 > (png_uint_32)65536L) png_error(png_ptr, "This image requires a row greater than 64KB"); #endif - if ((png_uint_32)png_ptr->rowbytes > (png_uint_32)(PNG_SIZE_MAX - 1)) + if ((png_uint_32)row_bytes > (png_uint_32)(PNG_SIZE_MAX - 1)) png_error(png_ptr, "Row has too many bytes to allocate in memory."); - if (png_ptr->rowbytes+1 > png_ptr->old_prev_row_size) + if (row_bytes + 1 > png_ptr->old_prev_row_size) { - png_free(png_ptr, png_ptr->prev_row); - png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)( - png_ptr->rowbytes + 1)); - png_ptr->old_prev_row_size = png_ptr->rowbytes+1; + png_free(png_ptr, png_ptr->prev_row); + png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)( + row_bytes + 1)); + png_memset_check(png_ptr, png_ptr->prev_row, 0, row_bytes + 1); + png_ptr->old_prev_row_size = row_bytes + 1; } - png_memset_check(png_ptr, png_ptr->prev_row, 0, png_ptr->rowbytes + 1); + png_ptr->rowbytes = row_bytes; png_debug1(3, "width = %lu,", png_ptr->width); png_debug1(3, "height = %lu,", png_ptr->height); @@ -1,12 +1,15 @@ /* pngset.c - storage of image information into info struct * - * Last changed in libpng 1.2.35 [February 14, 2009] - * For conditions of distribution and use, see copyright notice in png.h + * Last changed in libpng 1.2.38 [July 16, 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.) * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * The functions here are used during reads to store data from the file * into the info struct, and during writes to store application data * into the info struct for writing into the file. This abstracts the @@ -79,25 +82,25 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y)) #endif { - info_ptr->int_x_white = white_x; - info_ptr->int_y_white = white_y; - info_ptr->int_x_red = red_x; - info_ptr->int_y_red = red_y; - info_ptr->int_x_green = green_x; - info_ptr->int_y_green = green_y; - info_ptr->int_x_blue = blue_x; - info_ptr->int_y_blue = blue_y; -#ifdef PNG_FLOATING_POINT_SUPPORTED - info_ptr->x_white = (float)(white_x/100000.); - info_ptr->y_white = (float)(white_y/100000.); - info_ptr->x_red = (float)( red_x/100000.); - info_ptr->y_red = (float)( red_y/100000.); - info_ptr->x_green = (float)(green_x/100000.); - info_ptr->y_green = (float)(green_y/100000.); - info_ptr->x_blue = (float)( blue_x/100000.); - info_ptr->y_blue = (float)( blue_y/100000.); + info_ptr->int_x_white = white_x; + info_ptr->int_y_white = white_y; + info_ptr->int_x_red = red_x; + info_ptr->int_y_red = red_y; + info_ptr->int_x_green = green_x; + info_ptr->int_y_green = green_y; + info_ptr->int_x_blue = blue_x; + info_ptr->int_y_blue = blue_y; +#ifdef PNG_FLOATING_POINT_SUPPORTED + info_ptr->x_white = (float)(white_x/100000.); + info_ptr->y_white = (float)(white_y/100000.); + info_ptr->x_red = (float)( red_x/100000.); + info_ptr->y_red = (float)( red_y/100000.); + info_ptr->x_green = (float)(green_x/100000.); + info_ptr->y_green = (float)(green_y/100000.); + info_ptr->x_blue = (float)( blue_x/100000.); + info_ptr->y_blue = (float)( blue_y/100000.); #endif - info_ptr->valid |= PNG_INFO_cHRM; + info_ptr->valid |= PNG_INFO_cHRM; } } #endif /* PNG_FIXED_POINT_SUPPORTED */ @@ -108,7 +111,7 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, void PNGAPI png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) { - double gamma; + double png_gamma; png_debug1(1, "in %s storage function", "gAMA"); if (png_ptr == NULL || info_ptr == NULL) return; @@ -117,16 +120,16 @@ png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) if (file_gamma > 21474.83) { png_warning(png_ptr, "Limiting gamma to 21474.83"); - gamma=21474.83; + png_gamma=21474.83; } else - gamma = file_gamma; - info_ptr->gamma = (float)gamma; + png_gamma = file_gamma; + info_ptr->gamma = (float)png_gamma; #ifdef PNG_FIXED_POINT_SUPPORTED - info_ptr->int_gamma = (int)(gamma*100000.+.5); + info_ptr->int_gamma = (int)(png_gamma*100000.+.5); #endif info_ptr->valid |= PNG_INFO_gAMA; - if (gamma == 0.0) + if (png_gamma == 0.0) png_warning(png_ptr, "Setting gamma=0"); } #endif @@ -134,35 +137,35 @@ void PNGAPI png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point int_gamma) { - png_fixed_point gamma; + png_fixed_point png_gamma; png_debug1(1, "in %s storage function", "gAMA"); if (png_ptr == NULL || info_ptr == NULL) return; - if (int_gamma > (png_fixed_point) PNG_UINT_31_MAX) + if (int_gamma > (png_fixed_point)PNG_UINT_31_MAX) { - png_warning(png_ptr, "Limiting gamma to 21474.83"); - gamma=PNG_UINT_31_MAX; + png_warning(png_ptr, "Limiting gamma to 21474.83"); + png_gamma=PNG_UINT_31_MAX; } else { - if (int_gamma < 0) - { - png_warning(png_ptr, "Setting negative gamma to zero"); - gamma = 0; - } - else - gamma = int_gamma; + if (int_gamma < 0) + { + png_warning(png_ptr, "Setting negative gamma to zero"); + png_gamma = 0; + } + else + png_gamma = int_gamma; } #ifdef PNG_FLOATING_POINT_SUPPORTED - info_ptr->gamma = (float)(gamma/100000.); + info_ptr->gamma = (float)(png_gamma/100000.); #endif #ifdef PNG_FIXED_POINT_SUPPORTED - info_ptr->int_gamma = gamma; + info_ptr->int_gamma = png_gamma; #endif info_ptr->valid |= PNG_INFO_gAMA; - if (gamma == 0) + if (png_gamma == 0) png_warning(png_ptr, "Setting gamma=0"); } #endif @@ -179,26 +182,27 @@ png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist) if (info_ptr->num_palette == 0 || info_ptr->num_palette > PNG_MAX_PALETTE_LENGTH) { - png_warning(png_ptr, - "Invalid palette size, hIST allocation skipped."); - return; + png_warning(png_ptr, + "Invalid palette size, hIST allocation skipped."); + return; } #ifdef PNG_FREE_ME_SUPPORTED png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); #endif - /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in version - 1.2.1 */ + /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in + * version 1.2.1 + */ png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr, (png_uint_32)(PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16))); if (png_ptr->hist == NULL) - { - png_warning(png_ptr, "Insufficient memory for hIST chunk data."); - return; - } + { + png_warning(png_ptr, "Insufficient memory for hIST chunk data."); + return; + } for (i = 0; i < info_ptr->num_palette; i++) - png_ptr->hist[i] = hist[i]; + png_ptr->hist[i] = hist[i]; info_ptr->hist = png_ptr->hist; info_ptr->valid |= PNG_INFO_hIST; @@ -220,7 +224,7 @@ 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 */ + /* 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 @@ -240,13 +244,13 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr, - 8) /* extra max_pixel_depth pad */ png_warning(png_ptr, "Width is too large for libpng to process pixels"); - /* check other values */ + /* Check other values */ if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && - bit_depth != 8 && bit_depth != 16) + 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) + 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) || @@ -276,9 +280,9 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr, 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 || + (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) @@ -306,7 +310,7 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr, info_ptr->channels++; info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth); - /* check for potential overflow */ + /* Check for potential overflow */ if (width > (PNG_UINT_32_MAX >> 3) /* 8-byte RGBA pixels */ - 64 /* bigrowbuf hack */ @@ -353,7 +357,7 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr, info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length); if (info_ptr->pcal_purpose == NULL) { - png_warning(png_ptr, "Insufficient memory for pCAL purpose."); + png_warning(png_ptr, "Insufficient memory for pCAL purpose."); return; } png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length); @@ -370,7 +374,7 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr, info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length); if (info_ptr->pcal_units == NULL) { - png_warning(png_ptr, "Insufficient memory for pCAL units."); + png_warning(png_ptr, "Insufficient memory for pCAL units."); return; } png_memcpy(info_ptr->pcal_units, units, (png_size_t)length); @@ -379,14 +383,10 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr, (png_uint_32)((nparams + 1) * png_sizeof(png_charp))); if (info_ptr->pcal_params == NULL) { - png_warning(png_ptr, "Insufficient memory for pCAL params."); + png_warning(png_ptr, "Insufficient memory for pCAL params."); return; } -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_PCAL; -#endif - png_memset(info_ptr->pcal_params, 0, (nparams + 1) * png_sizeof(png_charp)); for (i = 0; i < nparams; i++) @@ -397,13 +397,16 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr, info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length); if (info_ptr->pcal_params[i] == NULL) { - png_warning(png_ptr, "Insufficient memory for pCAL parameter."); - return; + png_warning(png_ptr, "Insufficient memory for pCAL parameter."); + return; } png_memcpy(info_ptr->pcal_params[i], params[i], (png_size_t)length); } info_ptr->valid |= PNG_INFO_pCAL; +#ifdef PNG_FREE_ME_SUPPORTED + info_ptr->free_me |= PNG_FREE_PCAL; +#endif } #endif @@ -497,15 +500,15 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr, return; if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH) - { - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) + { + if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) png_error(png_ptr, "Invalid palette length"); - else - { + else + { png_warning(png_ptr, "Invalid palette length"); return; - } - } + } + } /* * It may not actually be necessary to set png_ptr->palette here; @@ -517,8 +520,9 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr, #endif /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead - of num_palette entries, - in case of an invalid PNG file that has too-large sample values. */ + * 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_MAX_PALETTE_LENGTH * png_sizeof(png_color)); png_memset(png_ptr->palette, 0, PNG_MAX_PALETTE_LENGTH * @@ -621,18 +625,18 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr, #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)) + 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); + white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y); #endif } #endif /* cHRM */ @@ -690,17 +694,17 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr, #if defined(PNG_TEXT_SUPPORTED) void PNGAPI png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, - int num_text) + int num_text) { int ret; ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text); if (ret) - png_error(png_ptr, "Insufficient memory to store text"); + png_error(png_ptr, "Insufficient memory to store text"); } int /* PRIVATE */ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, - int num_text) + int num_text) { int i; @@ -726,10 +730,10 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, info_ptr->text = (png_textp)png_malloc_warn(png_ptr, (png_uint_32)(info_ptr->max_text * png_sizeof(png_text))); if (info_ptr->text == NULL) - { - png_free(png_ptr, old_text); - return(1); - } + { + png_free(png_ptr, old_text); + return(1); + } png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * png_sizeof(png_text))); png_free(png_ptr, old_text); @@ -741,7 +745,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, info_ptr->text = (png_textp)png_malloc_warn(png_ptr, (png_uint_32)(info_ptr->max_text * png_sizeof(png_text))); if (info_ptr->text == NULL) - return(1); + return(1); #ifdef PNG_FREE_ME_SUPPORTED info_ptr->free_me |= PNG_FREE_TEXT; #endif @@ -762,26 +766,26 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, if (text_ptr[i].compression <= 0) { - lang_len = 0; - lang_key_len = 0; + 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 - lang_len = 0; - if (text_ptr[i].lang_key != NULL) - lang_key_len = png_strlen(text_ptr[i].lang_key); - else - lang_key_len = 0; + /* Set iTXt data */ + if (text_ptr[i].lang != NULL) + lang_len = png_strlen(text_ptr[i].lang); + else + lang_len = 0; + if (text_ptr[i].lang_key != NULL) + lang_key_len = png_strlen(text_ptr[i].lang_key); + else + lang_key_len = 0; } #else { - png_warning(png_ptr, "iTXt chunk not supported."); - continue; + png_warning(png_ptr, "iTXt chunk not supported."); + continue; } #endif @@ -805,14 +809,13 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, (png_uint_32) (key_len + text_length + lang_len + lang_key_len + 4)); if (textp->key == NULL) - return(1); + return(1); png_debug2(2, "Allocated %lu bytes at %x in png_set_text", - (png_uint_32) - (key_len + lang_len + lang_key_len + text_length + 4), - (int)textp->key); + (png_uint_32) + (key_len + lang_len + lang_key_len + text_length + 4), + (int)textp->key); - png_memcpy(textp->key, text_ptr[i].key, - (png_size_t)(key_len)); + png_memcpy(textp->key, text_ptr[i].key,(png_size_t)(key_len)); *(textp->key + key_len) = '\0'; #ifdef PNG_iTXt_SUPPORTED if (text_ptr[i].compression > 0) @@ -899,7 +902,7 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr, png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr, (png_uint_32)PNG_MAX_PALETTE_LENGTH); if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH) - png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans); + png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans); } if (trans_values != NULL) @@ -911,12 +914,12 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr, ((int)trans_values->red > sample_max || (int)trans_values->green > sample_max || (int)trans_values->blue > sample_max))) - png_warning(png_ptr, - "tRNS chunk has out-of-range samples for bit_depth"); + png_warning(png_ptr, + "tRNS chunk has out-of-range samples for bit_depth"); png_memcpy(&(info_ptr->trans_values), trans_values, png_sizeof(png_color_16)); if (num_trans == 0) - num_trans = 1; + num_trans = 1; } info_ptr->num_trans = (png_uint_16)num_trans; @@ -944,63 +947,62 @@ png_set_sPLT(png_structp png_ptr, * added. */ { - png_sPLT_tp np; - int i; + png_sPLT_tp np; + int i; - if (png_ptr == NULL || info_ptr == NULL) - return; + if (png_ptr == NULL || info_ptr == NULL) + return; - np = (png_sPLT_tp)png_malloc_warn(png_ptr, - (info_ptr->splt_palettes_num + nentries) * + np = (png_sPLT_tp)png_malloc_warn(png_ptr, + (info_ptr->splt_palettes_num + nentries) * (png_uint_32)png_sizeof(png_sPLT_t)); - if (np == NULL) - { + if (np == NULL) + { png_warning(png_ptr, "No memory for sPLT palettes."); - return; - } - - png_memcpy(np, info_ptr->splt_palettes, - info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t)); + return; + } - png_free(png_ptr, info_ptr->splt_palettes); - info_ptr->splt_palettes=NULL; + png_memcpy(np, info_ptr->splt_palettes, + info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t)); + png_free(png_ptr, info_ptr->splt_palettes); + info_ptr->splt_palettes=NULL; - for (i = 0; i < nentries; i++) - { - png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; - png_sPLT_tp from = entries + i; - png_uint_32 length; + for (i = 0; i < nentries; i++) + { + png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; + png_sPLT_tp from = entries + i; + png_uint_32 length; - length = png_strlen(from->name) + 1; + length = png_strlen(from->name) + 1; to->name = (png_charp)png_malloc_warn(png_ptr, length); - if (to->name == NULL) - { - png_warning(png_ptr, - "Out of memory while processing sPLT chunk"); - continue; - } - png_memcpy(to->name, from->name, length); - to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, + if (to->name == NULL) + { + png_warning(png_ptr, + "Out of memory while processing sPLT chunk"); + continue; + } + png_memcpy(to->name, from->name, length); + to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, (png_uint_32)(from->nentries * png_sizeof(png_sPLT_entry))); - if (to->entries == NULL) - { - png_warning(png_ptr, - "Out of memory while processing sPLT chunk"); - png_free(png_ptr, to->name); - to->name = NULL; - continue; - } - png_memcpy(to->entries, from->entries, - from->nentries * png_sizeof(png_sPLT_entry)); - to->nentries = from->nentries; - to->depth = from->depth; - } - - info_ptr->splt_palettes = np; - info_ptr->splt_palettes_num += nentries; - info_ptr->valid |= PNG_INFO_sPLT; + if (to->entries == NULL) + { + png_warning(png_ptr, + "Out of memory while processing sPLT chunk"); + png_free(png_ptr, to->name); + to->name = NULL; + continue; + } + png_memcpy(to->entries, from->entries, + from->nentries * png_sizeof(png_sPLT_entry)); + to->nentries = from->nentries; + to->depth = from->depth; + } + + info_ptr->splt_palettes = np; + info_ptr->splt_palettes_num += nentries; + info_ptr->valid |= PNG_INFO_sPLT; #ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_SPLT; + info_ptr->free_me |= PNG_FREE_SPLT; #endif } #endif /* PNG_sPLT_SUPPORTED */ @@ -1010,61 +1012,61 @@ void PNGAPI png_set_unknown_chunks(png_structp png_ptr, png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns) { - png_unknown_chunkp np; - int i; - - if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) - return; - - np = (png_unknown_chunkp)png_malloc_warn(png_ptr, - (png_uint_32)((info_ptr->unknown_chunks_num + num_unknowns) * - png_sizeof(png_unknown_chunk))); - if (np == NULL) - { - png_warning(png_ptr, - "Out of memory while processing unknown chunk."); - return; - } - - png_memcpy(np, info_ptr->unknown_chunks, - info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk)); - png_free(png_ptr, info_ptr->unknown_chunks); - info_ptr->unknown_chunks=NULL; - - for (i = 0; i < num_unknowns; i++) - { - png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; - png_unknown_chunkp from = unknowns + i; - - png_memcpy((png_charp)to->name, - (png_charp)from->name, - png_sizeof(from->name)); - to->name[png_sizeof(to->name)-1] = '\0'; - to->size = from->size; - /* note our location in the read or write sequence */ - to->location = (png_byte)(png_ptr->mode & 0xff); - - if (from->size == 0) - to->data=NULL; - else - { - to->data = (png_bytep)png_malloc_warn(png_ptr, - (png_uint_32)from->size); - if (to->data == NULL) - { - png_warning(png_ptr, - "Out of memory while processing unknown chunk."); - to->size = 0; - } - else - png_memcpy(to->data, from->data, from->size); - } - } - - info_ptr->unknown_chunks = np; - info_ptr->unknown_chunks_num += num_unknowns; + png_unknown_chunkp np; + int i; + + if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) + return; + + np = (png_unknown_chunkp)png_malloc_warn(png_ptr, + (png_uint_32)((info_ptr->unknown_chunks_num + num_unknowns) * + png_sizeof(png_unknown_chunk))); + if (np == NULL) + { + png_warning(png_ptr, + "Out of memory while processing unknown chunk."); + return; + } + + png_memcpy(np, info_ptr->unknown_chunks, + info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk)); + png_free(png_ptr, info_ptr->unknown_chunks); + info_ptr->unknown_chunks=NULL; + + for (i = 0; i < num_unknowns; i++) + { + png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; + png_unknown_chunkp from = unknowns + i; + + png_memcpy((png_charp)to->name, + (png_charp)from->name, + png_sizeof(from->name)); + to->name[png_sizeof(to->name)-1] = '\0'; + to->size = from->size; + /* Note our location in the read or write sequence */ + to->location = (png_byte)(png_ptr->mode & 0xff); + + if (from->size == 0) + to->data=NULL; + else + { + to->data = (png_bytep)png_malloc_warn(png_ptr, + (png_uint_32)from->size); + if (to->data == NULL) + { + png_warning(png_ptr, + "Out of memory while processing unknown chunk."); + to->size = 0; + } + else + png_memcpy(to->data, from->data, from->size); + } + } + + info_ptr->unknown_chunks = np; + info_ptr->unknown_chunks_num += num_unknowns; #ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_UNKN; + info_ptr->free_me |= PNG_FREE_UNKN; #endif } void PNGAPI @@ -1113,44 +1115,44 @@ void PNGAPI png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep chunk_list, int num_chunks) { - png_bytep new_list, p; - int i, old_num_chunks; - if (png_ptr == NULL) - return; - if (num_chunks == 0) - { + png_bytep new_list, p; + int i, old_num_chunks; + if (png_ptr == NULL) + return; + if (num_chunks == 0) + { if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE) - png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; + png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; else - png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; + png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; if (keep == PNG_HANDLE_CHUNK_ALWAYS) - png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; + png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; else - png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; + png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; return; - } - if (chunk_list == NULL) + } + if (chunk_list == NULL) return; - old_num_chunks = png_ptr->num_chunk_list; - new_list=(png_bytep)png_malloc(png_ptr, - (png_uint_32) - (5*(num_chunks + old_num_chunks))); - if (png_ptr->chunk_list != NULL) - { - png_memcpy(new_list, png_ptr->chunk_list, - (png_size_t)(5*old_num_chunks)); - png_free(png_ptr, png_ptr->chunk_list); - png_ptr->chunk_list=NULL; - } - png_memcpy(new_list + 5*old_num_chunks, chunk_list, - (png_size_t)(5*num_chunks)); - for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5) - *p=(png_byte)keep; - png_ptr->num_chunk_list = old_num_chunks + num_chunks; - png_ptr->chunk_list = new_list; + old_num_chunks = png_ptr->num_chunk_list; + new_list=(png_bytep)png_malloc(png_ptr, + (png_uint_32) + (5*(num_chunks + old_num_chunks))); + if (png_ptr->chunk_list != NULL) + { + png_memcpy(new_list, png_ptr->chunk_list, + (png_size_t)(5*old_num_chunks)); + png_free(png_ptr, png_ptr->chunk_list); + png_ptr->chunk_list=NULL; + } + png_memcpy(new_list + 5*old_num_chunks, chunk_list, + (png_size_t)(5*num_chunks)); + for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5) + *p=(png_byte)keep; + png_ptr->num_chunk_list = old_num_chunks + num_chunks; + png_ptr->chunk_list = new_list; #ifdef PNG_FREE_ME_SUPPORTED - png_ptr->free_me |= PNG_FREE_LIST; + png_ptr->free_me |= PNG_FREE_LIST; #endif } #endif @@ -1210,7 +1212,7 @@ png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) #ifndef PNG_1_0_X #ifdef PNG_ASSEMBLER_CODE_SUPPORTED -/* function was added to libpng 1.2.0 and should always exist by default */ +/* Function was added to libpng 1.2.0 and should always exist by default */ void PNGAPI png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags) { @@ -1220,7 +1222,7 @@ png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags) asm_flags = asm_flags; /* Quiet the compiler */ } -/* this function was added to libpng 1.2.0 */ +/* This function was added to libpng 1.2.0 */ void PNGAPI png_set_mmx_thresholds (png_structp png_ptr, png_byte mmx_bitdepth_threshold, @@ -1236,18 +1238,19 @@ png_set_mmx_thresholds (png_structp png_ptr, #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ #ifdef PNG_SET_USER_LIMITS_SUPPORTED -/* this function was added to libpng 1.2.6 */ +/* This function was added to libpng 1.2.6 */ void PNGAPI png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max) { - /* Images with dimensions larger than these limits will be - * rejected by png_set_IHDR(). To accept any PNG datastream - * regardless of dimensions, set both limits to 0x7ffffffL. - */ - if (png_ptr == NULL) return; - png_ptr->user_width_max = user_width_max; - png_ptr->user_height_max = user_height_max; + /* Images with dimensions larger than these limits will be + * rejected by png_set_IHDR(). To accept any PNG datastream + * regardless of dimensions, set both limits to 0x7ffffffL. + */ + if (png_ptr == NULL) + return; + png_ptr->user_width_max = user_width_max; + png_ptr->user_height_max = user_height_max; } #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ @@ -1,12 +1,15 @@ /* pngtest.c - a simple test program to test libpng * - * Last changed in libpng 1.2.32 [September 18, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [June 4, 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.) * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * This program reads in a PNG image, writes it out again, and then * compares the two files. If the files are identical, this shows that * the basic chunk handling, filtering, and (de)compression code is working @@ -65,7 +68,7 @@ #endif #if !PNG_DEBUG -# define SINGLE_ROWBUF_ALLOC /* makes buffer overruns easier to nail */ +# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */ #endif /* Turn on CPU timing @@ -95,9 +98,9 @@ int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname)); #include <mem.h> #endif -/* defined so I can write to a file on gui/windowing platforms */ +/* Defined so I can write to a file on gui/windowing platforms */ /* #define STDERR stderr */ -#define STDERR stdout /* for DOS */ +#define STDERR stdout /* For DOS */ /* In case a system header (e.g., on AIX) defined jmpbuf */ #ifdef jmpbuf @@ -109,7 +112,7 @@ int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname)); # define png_jmpbuf(png_ptr) png_ptr->jmpbuf #endif -/* example of using row callbacks to make a simple progress meter */ +/* Example of using row callbacks to make a simple progress meter */ static int status_pass = 1; static int status_dots_requested = 0; static int status_dots = 1; @@ -125,20 +128,21 @@ PNGAPI #endif read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) { - if (png_ptr == NULL || row_number > PNG_UINT_31_MAX) return; - if (status_pass != pass) - { - fprintf(stdout, "\n Pass %d: ", pass); - status_pass = pass; - status_dots = 31; - } - status_dots--; - if (status_dots == 0) - { - fprintf(stdout, "\n "); - status_dots=30; - } - fprintf(stdout, "r"); + if (png_ptr == NULL || row_number > PNG_UINT_31_MAX) + return; + if (status_pass != pass) + { + fprintf(stdout, "\n Pass %d: ", pass); + status_pass = pass; + status_dots = 31; + } + status_dots--; + if (status_dots == 0) + { + fprintf(stdout, "\n "); + status_dots=30; + } + fprintf(stdout, "r"); } void @@ -152,15 +156,17 @@ PNGAPI #endif write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) { - if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) return; - fprintf(stdout, "w"); + if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) + return; + fprintf(stdout, "w"); } #if defined(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.) */ + * but merely examine the row filters. We set this to 256 rather than + * 5 in case illegal filter values are present.) + */ static png_uint_32 filters_used[256]; void #ifdef PNG_1_0_X @@ -173,14 +179,15 @@ PNGAPI #endif count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data) { - if (png_ptr != NULL && row_info != NULL) + if (png_ptr != NULL && row_info != NULL) ++filters_used[*(data - 1)]; } #endif #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) -/* example of using user transform callback (we don't transform anything, - but merely count the zero samples) */ +/* Example of using user transform callback (we don't transform anything, + * but merely count the zero samples) + */ static png_uint_32 zero_samples; @@ -198,7 +205,7 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) png_bytep dp = data; if (png_ptr == NULL)return; - /* contents of row_info: + /* Contents of row_info: * png_uint_32 width width of row * png_uint_32 rowbytes number of bytes in row * png_byte color_type color type of pixels @@ -207,8 +214,7 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) * png_byte pixel_depth bits per pixel (depth*channels) */ - - /* counts the number of zero samples (or zero pixels if color_type is 3 */ + /* Counts the number of zero samples (or zero pixels if color_type is 3 */ if (row_info->color_type == 0 || row_info->color_type == 3) { @@ -218,7 +224,8 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) { if (row_info->bit_depth == 1) { - if (((*dp << pos++ ) & 0x80) == 0) zero_samples++; + if (((*dp << pos++ ) & 0x80) == 0) + zero_samples++; if (pos == 8) { pos = 0; @@ -227,7 +234,8 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) } if (row_info->bit_depth == 2) { - if (((*dp << (pos+=2)) & 0xc0) == 0) zero_samples++; + if (((*dp << (pos+=2)) & 0xc0) == 0) + zero_samples++; if (pos == 8) { pos = 0; @@ -236,7 +244,8 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) } if (row_info->bit_depth == 4) { - if (((*dp << (pos+=4)) & 0xf0) == 0) zero_samples++; + if (((*dp << (pos+=4)) & 0xf0) == 0) + zero_samples++; if (pos == 8) { pos = 0; @@ -244,15 +253,17 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) } } if (row_info->bit_depth == 8) - if (*dp++ == 0) zero_samples++; + if (*dp++ == 0) + zero_samples++; if (row_info->bit_depth == 16) { - if ((*dp | *(dp+1)) == 0) zero_samples++; + if ((*dp | *(dp+1)) == 0) + zero_samples++; dp+=2; } } } - else /* other color types */ + else /* Other color types */ { png_uint_32 n, nstop; int channel; @@ -264,17 +275,20 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) for (channel = 0; channel < color_channels; channel++) { if (row_info->bit_depth == 8) - if (*dp++ == 0) zero_samples++; + if (*dp++ == 0) + zero_samples++; if (row_info->bit_depth == 16) { - if ((*dp | *(dp+1)) == 0) zero_samples++; + if ((*dp | *(dp+1)) == 0) + zero_samples++; dp+=2; } } if (row_info->color_type > 3) { dp++; - if (row_info->bit_depth == 16)dp++; + if (row_info->bit_depth == 16) + dp++; } } } @@ -285,12 +299,13 @@ static int wrote_question = 0; #if defined(PNG_NO_STDIO) /* 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. */ -/* 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 - than changing the library. */ +/* 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. + * 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 + * than changing the library. + */ #ifndef USE_FAR_KEYWORD static void @@ -309,7 +324,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) } } #else -/* this is the model-independent version. Since the standard I/O library +/* This is the model-independent version. Since the standard I/O library can't handle far buffers in the medium and small models, we have to copy the data. */ @@ -341,7 +356,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) { read = MIN(NEAR_BUF_SIZE, remaining); READFILE(io_ptr, buf, 1, err); - png_memcpy(data, buf, read); /* copy far buffer to near buffer */ + png_memcpy(data, buf, read); /* Copy far buffer to near buffer */ if (err != read) break; else @@ -352,9 +367,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) while (remaining != 0); } if (check != length) - { png_error(png_ptr, "read Error"); - } } #endif /* USE_FAR_KEYWORD */ @@ -362,19 +375,16 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) static void pngtest_flush(png_structp png_ptr) { -#if !defined(_WIN32_WCE) - png_FILE_p io_ptr; - io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr)); - if (io_ptr != NULL) - fflush(io_ptr); -#endif + /* Do nothing; fflush() is said to be just a waste of energy. */ + png_ptr = png_ptr; /* Stifle compiler warning */ } #endif /* 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 - than changing the library. */ + * 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 + * than changing the library. + */ #ifndef USE_FAR_KEYWORD static void pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) @@ -388,7 +398,7 @@ pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) } } #else -/* this is the model-independent version. Since the standard I/O library +/* This is the model-independent version. Since the standard I/O library can't handle far buffers in the medium and small models, we have to copy the data. */ @@ -419,7 +429,7 @@ pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) do { written = MIN(NEAR_BUF_SIZE, remaining); - png_memcpy(buf, data, written); /* copy far buffer to near buffer */ + png_memcpy(buf, data, written); /* Copy far buffer to near buffer */ WRITEFILE(io_ptr, buf, written, err); if (err != written) break; @@ -461,7 +471,8 @@ pngtest_error(png_structp png_ptr, png_const_charp message) { pngtest_warning(png_ptr, message); /* We can return because png_error calls the default handler, which is - * actually OK in this case. */ + * actually OK in this case. + */ } #endif /* PNG_NO_STDIO */ /* END of code to validate stdio-free compilation */ @@ -470,13 +481,14 @@ pngtest_error(png_structp png_ptr, png_const_charp message) #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG /* Allocate memory. For reasonable files, size should never exceed - 64K. However, zlib may allocate more then 64K if you don't tell - it not to. See zconf.h and png.h for more information. zlib does - need to allocate exactly 64K, so whatever you call here must - have the ability to do that. - - This piece of code can be compiled to validate max 64K allocations - by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. */ + * 64K. However, zlib may allocate more then 64K if you don't tell + * it not to. See zconf.h and png.h for more information. zlib does + * need to allocate exactly 64K, so whatever you call here must + * have the ability to do that. + * + * This piece of code can be compiled to validate max 64K allocations + * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. + */ typedef struct memory_information { png_uint_32 size; @@ -499,7 +511,8 @@ png_debug_malloc(png_structp png_ptr, png_uint_32 size) { /* png_malloc has already tested for NULL; png_create_struct calls - png_debug_malloc directly, with png_ptr == NULL which is OK */ + * png_debug_malloc directly, with png_ptr == NULL which is OK + */ if (size == 0) return (NULL); @@ -596,7 +609,7 @@ 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) -/* (sTER is a public chunk not yet understood by libpng. vpAg is a private +/* (sTER is a public chunk not yet known by libpng. vpAg is a private chunk used in ImageMagick to store "virtual page" size). */ static png_uint_32 user_chunk_data[4]; @@ -610,50 +623,51 @@ static png_uint_32 user_chunk_data[4]; static int read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk) { - png_uint_32 - *user_chunk_data; - - /* Return one of the following: */ - /* return (-n); chunk had an error */ - /* return (0); did not recognize */ - /* return (n); success */ - - /* The unknown chunk structure contains the chunk data: - * png_byte name[5]; - * png_byte *data; - * png_size_t size; - * - * Note that libpng has already taken care of the CRC handling. - */ - - if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */ - chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */ - { - /* Found sTER chunk */ - if (chunk->size != 1) - return (-1); /* Error return */ - if (chunk->data[0] != 0 && chunk->data[0] != 1) - return (-1); /* Invalid mode */ - user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr); - user_chunk_data[0]=chunk->data[0]+1; - return (1); - } - if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */ - chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */ - return (0); /* Did not recognize */ - - /* Found ImageMagick vpAg chunk */ - - if (chunk->size != 9) - return (-1); /* Error return */ - - user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr); - - user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data); - user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4); - user_chunk_data[3]=(png_uint_32)chunk->data[8]; - - return (1); + png_uint_32 + *my_user_chunk_data; + + /* Return one of the following: + * return (-n); chunk had an error + * return (0); did not recognize + * return (n); success + * + * The unknown chunk structure contains the chunk data: + * png_byte name[5]; + * png_byte *data; + * png_size_t size; + * + * Note that libpng has already taken care of the CRC handling. + */ + + if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */ + chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */ + { + /* Found sTER chunk */ + if (chunk->size != 1) + return (-1); /* Error return */ + if (chunk->data[0] != 0 && chunk->data[0] != 1) + return (-1); /* Invalid mode */ + my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr); + my_user_chunk_data[0]=chunk->data[0]+1; + return (1); + } + + if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */ + chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */ + return (0); /* Did not recognize */ + + /* Found ImageMagick vpAg chunk */ + + if (chunk->size != 9) + return (-1); /* Error return */ + + my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr); + + my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data); + my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4); + my_user_chunk_data[3]=(png_uint_32)chunk->data[8]; + + return (1); } #endif @@ -734,12 +748,12 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) #endif #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) - user_chunk_data[0] = 0; - user_chunk_data[1] = 0; - user_chunk_data[2] = 0; - user_chunk_data[3] = 0; - png_set_read_user_chunk_fn(read_ptr, user_chunk_data, - read_user_chunk_callback); + user_chunk_data[0] = 0; + user_chunk_data[1] = 0; + user_chunk_data[2] = 0; + user_chunk_data[3] = 0; + png_set_read_user_chunk_fn(read_ptr, user_chunk_data, + read_user_chunk_callback); #endif #ifdef PNG_WRITE_SUPPORTED @@ -848,10 +862,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) { - int i; - for (i = 0; i<256; i++) - filters_used[i] = 0; - png_set_read_user_transform_fn(read_ptr, count_filters); + int i; + for (i = 0; i<256; i++) + filters_used[i] = 0; + png_set_read_user_transform_fn(read_ptr, count_filters); } #endif #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) @@ -910,9 +924,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) png_fixed_point gamma; if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma)) - { png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma); - } } #endif #else /* Use floating point versions */ @@ -934,13 +946,11 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) double gamma; if (png_get_gAMA(read_ptr, read_info_ptr, &gamma)) - { png_set_gAMA(write_ptr, write_info_ptr, gamma); - } } #endif -#endif /* floating point */ -#endif /* fixed point */ +#endif /* Floating point */ +#endif /* Fixed point */ #if defined(PNG_iCCP_SUPPORTED) { png_charp name; @@ -961,9 +971,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) int intent; if (png_get_sRGB(read_ptr, read_info_ptr, &intent)) - { png_set_sRGB(write_ptr, write_info_ptr, intent); - } } #endif { @@ -971,9 +979,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) int num_palette; 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) { @@ -990,9 +996,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) png_uint_16p hist; if (png_get_hIST(read_ptr, read_info_ptr, &hist)) - { png_set_hIST(write_ptr, write_info_ptr, hist); - } } #endif #if defined(PNG_oFFs_SUPPORTED) @@ -1001,7 +1005,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) int unit_type; if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y, - &unit_type)) + &unit_type)) { png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type); } @@ -1028,9 +1032,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) int unit_type; if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type)) - { png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type); - } } #endif #if defined(PNG_sBIT_SUPPORTED) @@ -1038,9 +1040,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) png_color_8p sig_bit; if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit)) - { png_set_sBIT(write_ptr, write_info_ptr, sig_bit); - } } #endif #if defined(PNG_sCAL_SUPPORTED) @@ -1090,9 +1090,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) { png_set_tIME(write_ptr, write_info_ptr, mod_time); #if defined(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 */ + /* 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. + */ png_memcpy(tIME_string, png_convert_to_rfc1123(read_ptr, mod_time), png_sizeof(tIME_string)); @@ -1114,13 +1115,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) int sample_max = (1 << read_info_ptr->bit_depth); /* libpng doesn't reject a tRNS chunk with out-of-range samples */ if (!((read_info_ptr->color_type == PNG_COLOR_TYPE_GRAY && - (int)trans_values->gray > sample_max) || - (read_info_ptr->color_type == PNG_COLOR_TYPE_RGB && - ((int)trans_values->red > sample_max || - (int)trans_values->green > sample_max || - (int)trans_values->blue > sample_max)))) - png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans, - trans_values); + (int)trans_values->gray > sample_max) || + (read_info_ptr->color_type == PNG_COLOR_TYPE_RGB && + ((int)trans_values->red > sample_max || + (int)trans_values->green > sample_max || + (int)trans_values->blue > sample_max)))) + png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans, + trans_values); } } #endif @@ -1134,9 +1135,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) png_size_t i; png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns, num_unknowns); - /* copy the locations from the read_info_ptr. The automatically - generated locations in write_info_ptr are wrong because we - haven't written anything yet */ + /* Copy the locations from the read_info_ptr. The automatically + * generated locations in write_info_ptr are wrong because we + * haven't written anything yet. + */ for (i = 0; i < (png_size_t)num_unknowns; i++) png_set_unknown_chunk_location(write_ptr, write_info_ptr, i, unknowns[i].location); @@ -1148,40 +1150,40 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) png_debug(0, "Writing info struct"); /* If we wanted, we could write info in two steps: - png_write_info_before_PLTE(write_ptr, write_info_ptr); + * png_write_info_before_PLTE(write_ptr, write_info_ptr); */ png_write_info(write_ptr, write_info_ptr); #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) if (user_chunk_data[0] != 0) { - png_byte png_sTER[5] = {115, 84, 69, 82, '\0'}; + png_byte png_sTER[5] = {115, 84, 69, 82, '\0'}; - unsigned char - ster_chunk_data[1]; + unsigned char + ster_chunk_data[1]; - if (verbose) - fprintf(STDERR, "stereo mode = %lu\n", - (unsigned long)(user_chunk_data[0] - 1)); - ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1); - png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1); + if (verbose) + fprintf(STDERR, "\n stereo mode = %lu\n", + (unsigned long)(user_chunk_data[0] - 1)); + ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1); + png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1); } if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0) { - png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'}; - - unsigned char - vpag_chunk_data[9]; - - if (verbose) - fprintf(STDERR, "vpAg = %lu x %lu, units=%lu\n", - (unsigned long)user_chunk_data[1], - (unsigned long)user_chunk_data[2], - (unsigned long)user_chunk_data[3]); - png_save_uint_32(vpag_chunk_data, user_chunk_data[1]); - png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]); - vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff); - png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9); + png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'}; + + unsigned char + vpag_chunk_data[9]; + + if (verbose) + fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n", + (unsigned long)user_chunk_data[1], + (unsigned long)user_chunk_data[2], + (unsigned long)user_chunk_data[3]); + png_save_uint_32(vpag_chunk_data, user_chunk_data[1]); + png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]); + vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff); + png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9); } #endif @@ -1276,7 +1278,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) { png_set_tIME(write_ptr, write_end_info_ptr, mod_time); #if defined(PNG_TIME_RFC1123_SUPPORTED) - /* we have to use png_memcpy instead of "=" because the string + /* 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 */ png_memcpy(tIME_string, @@ -1299,9 +1301,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) png_size_t i; png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns, num_unknowns); - /* copy the locations from the read_info_ptr. The automatically - generated locations in write_end_info_ptr are wrong because we - haven't written the end_info yet */ + /* Copy the locations from the read_info_ptr. The automatically + * generated locations in write_end_info_ptr are wrong because we + * haven't written the end_info yet. + */ for (i = 0; i < (png_size_t)num_unknowns; i++) png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i, unknowns[i].location); @@ -1318,7 +1321,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) png_uint_32 iwidth, iheight; iwidth = png_get_image_width(write_ptr, write_info_ptr); iheight = png_get_image_height(write_ptr, write_info_ptr); - fprintf(STDERR, "Image width = %lu, height = %lu\n", + fprintf(STDERR, "\n Image width = %lu, height = %lu\n", (unsigned long)iwidth, (unsigned long)iheight); } #endif @@ -1424,7 +1427,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) return (0); } -/* input and output filenames */ +/* Input and output filenames */ #ifdef RISCOS static PNG_CONST char *inname = "pngtest/png"; static PNG_CONST char *outname = "pngout/png"; @@ -1439,7 +1442,7 @@ main(int argc, char *argv[]) int multiple = 0; int ierror = 0; - fprintf(STDERR, "Testing libpng version %s\n", PNG_LIBPNG_VER_STRING); + fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING); fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION); fprintf(STDERR, "%s", png_get_copyright(NULL)); /* Show the version of libpng used in building the library */ @@ -1453,9 +1456,10 @@ main(int argc, char *argv[]) (long)png_sizeof(png_struct), (long)png_sizeof(png_info)); /* Do some consistency checking on the memory allocation settings, I'm - not sure this matters, but it is nice to know, the first of these - tests should be impossible because of the way the macros are set - in pngconf.h */ + * not sure this matters, but it is nice to know, the first of these + * tests should be impossible because of the way the macros are set + * in pngconf.h + */ #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n"); #endif @@ -1527,7 +1531,7 @@ main(int argc, char *argv[]) int k; #endif int kerror; - fprintf(STDERR, "Testing %s:", argv[i]); + fprintf(STDERR, "\n Testing %s:", argv[i]); kerror = test_one_file(argv[i], outname); if (kerror == 0) { @@ -1597,7 +1601,7 @@ main(int argc, char *argv[]) if (i == 1) status_dots_requested = 1; else if (verbose == 0)status_dots_requested = 0; if (i == 0 || verbose == 1 || ierror != 0) - fprintf(STDERR, "Testing %s:", inname); + fprintf(STDERR, "\n Testing %s:", inname); kerror = test_one_file(inname, outname); if (kerror == 0) { @@ -1628,7 +1632,7 @@ main(int argc, char *argv[]) else { if (verbose == 0 && i != 2) - fprintf(STDERR, "Testing %s:", inname); + fprintf(STDERR, "\n Testing %s:", inname); fprintf(STDERR, " FAIL\n"); ierror += kerror; } @@ -1678,11 +1682,11 @@ main(int argc, char *argv[]) #endif if (ierror == 0) - fprintf(STDERR, "libpng passes test\n"); + fprintf(STDERR, " libpng passes test\n"); else - fprintf(STDERR, "libpng FAILS test\n"); + fprintf(STDERR, " libpng FAILS test\n"); return (int)(ierror != 0); } /* Generate a compiler error if there is an old png.h in the search path. */ -typedef version_1_2_35 your_png_h_is_not_version_1_2_35; +typedef version_1_2_38 your_png_h_is_not_version_1_2_38; @@ -1,11 +1,14 @@ /* pngtrans.c - transforms the data in a row (used by both readers and writers) * - * Last changed in libpng 1.2.30 [August 15, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.36 [May 14, 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.) + * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h */ #define PNG_INTERNAL @@ -13,35 +16,38 @@ #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) -/* turn on BGR-to-RGB mapping */ +/* Turn on BGR-to-RGB mapping */ void PNGAPI png_set_bgr(png_structp png_ptr) { png_debug(1, "in png_set_bgr"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= PNG_BGR; } #endif #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -/* turn on 16 bit byte swapping */ +/* Turn on 16 bit byte swapping */ void PNGAPI png_set_swap(png_structp png_ptr) { png_debug(1, "in png_set_swap"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; if (png_ptr->bit_depth == 16) png_ptr->transformations |= PNG_SWAP_BYTES; } #endif #if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED) -/* turn on pixel packing */ +/* Turn on pixel packing */ void PNGAPI png_set_packing(png_structp png_ptr) { png_debug(1, "in png_set_packing"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; if (png_ptr->bit_depth < 8) { png_ptr->transformations |= PNG_PACK; @@ -51,12 +57,13 @@ png_set_packing(png_structp png_ptr) #endif #if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED) -/* turn on packed pixel swapping */ +/* Turn on packed pixel swapping */ void PNGAPI png_set_packswap(png_structp png_ptr) { png_debug(1, "in png_set_packswap"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; if (png_ptr->bit_depth < 8) png_ptr->transformations |= PNG_PACKSWAP; } @@ -67,7 +74,8 @@ 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; + if (png_ptr == NULL) + return; png_ptr->transformations |= PNG_SHIFT; png_ptr->shift = *true_bits; } @@ -99,7 +107,8 @@ 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; + if (png_ptr == NULL) + return; png_ptr->transformations |= PNG_FILLER; png_ptr->filler = (png_byte)filler; if (filler_loc == PNG_FILLER_AFTER) @@ -132,7 +141,8 @@ 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; + if (png_ptr == NULL) + return; png_set_filler(png_ptr, filler, filler_loc); png_ptr->transformations |= PNG_ADD_ALPHA; } @@ -146,7 +156,8 @@ void PNGAPI png_set_swap_alpha(png_structp png_ptr) { png_debug(1, "in png_set_swap_alpha"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= PNG_SWAP_ALPHA; } #endif @@ -157,7 +168,8 @@ void PNGAPI png_set_invert_alpha(png_structp png_ptr) { png_debug(1, "in png_set_invert_alpha"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= PNG_INVERT_ALPHA; } #endif @@ -167,11 +179,12 @@ void PNGAPI png_set_invert_mono(png_structp png_ptr) { png_debug(1, "in png_set_invert_mono"); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_ptr->transformations |= PNG_INVERT_MONO; } -/* invert monochrome grayscale data */ +/* Invert monochrome grayscale data */ void /* PRIVATE */ png_do_invert(png_row_infop row_info, png_bytep row) { @@ -226,7 +239,7 @@ png_do_invert(png_row_infop row_info, png_bytep row) #endif #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -/* swaps byte order on 16 bit depth images */ +/* Swaps byte order on 16 bit depth images */ void /* PRIVATE */ png_do_swap(png_row_infop row_info, png_bytep row) { @@ -357,7 +370,7 @@ static PNG_CONST png_byte fourbppswaptable[256] = { 0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF }; -/* swaps pixel packing order within bytes */ +/* Swaps pixel packing order within bytes */ void /* PRIVATE */ png_do_packswap(png_row_infop row_info, png_bytep row) { @@ -389,7 +402,7 @@ png_do_packswap(png_row_infop row_info, png_bytep row) #if defined(PNG_WRITE_FILLER_SUPPORTED) || \ defined(PNG_READ_STRIP_ALPHA_SUPPORTED) -/* remove filler or alpha byte(s) */ +/* Remove filler or alpha byte(s) */ void /* PRIVATE */ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags) { @@ -404,9 +417,9 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags) png_uint_32 i; if ((row_info->color_type == PNG_COLOR_TYPE_RGB || - (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA && - (flags & PNG_FLAG_STRIP_ALPHA))) && - row_info->channels == 4) + (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA && + (flags & PNG_FLAG_STRIP_ALPHA))) && + row_info->channels == 4) { if (row_info->bit_depth == 8) { @@ -547,7 +560,7 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags) #endif #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) -/* swaps red and blue bytes within a pixel */ +/* Swaps red and blue bytes within a pixel */ void /* PRIVATE */ png_do_bgr(png_row_infop row_info, png_bytep row) { @@ -624,14 +637,15 @@ png_do_bgr(png_row_infop row_info, png_bytep row) #endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */ #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_LEGACY_SUPPORTED) + defined(PNG_LEGACY_SUPPORTED) || \ + defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) void PNGAPI 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 (png_ptr == NULL) + return; #if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) png_ptr->user_transform_ptr = user_transform_ptr; png_ptr->user_transform_depth = (png_byte)user_transform_depth; @@ -652,7 +666,8 @@ png_set_user_transform_info(png_structp png_ptr, png_voidp png_voidp PNGAPI png_get_user_transform_ptr(png_structp png_ptr) { - if (png_ptr == NULL) return (NULL); + if (png_ptr == NULL) + return (NULL); #if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) return ((png_voidp)png_ptr->user_transform_ptr); #else @@ -1,12 +1,15 @@ /* pngwio.c - functions for data output * - * Last changed in libpng 1.2.35 [February 14, 2009] - * For conditions of distribution and use, see copyright notice in png.h + * Last changed in libpng 1.2.37 [June 4, 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.) * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h + * * This file provides a location for all output. Users who need * special handling are expected to write functions that have the same * arguments as these and perform similar functions, but that possibly @@ -20,10 +23,11 @@ #ifdef PNG_WRITE_SUPPORTED /* Write the data to whatever output you are using. The default routine - writes to a file pointer. Note that this routine sometimes gets called - with very small lengths, so you should implement some kind of simple - buffering if you are using unbuffered writes. This should never be asked - to write more than 64K on a 16 bit machine. */ + * writes to a file pointer. Note that this routine sometimes gets called + * with very small lengths, so you should implement some kind of simple + * buffering if you are using unbuffered writes. This should never be asked + * to write more than 64K on a 16 bit machine. + */ void /* PRIVATE */ png_write_data(png_structp png_ptr, png_bytep data, png_size_t length) @@ -36,16 +40,18 @@ png_write_data(png_structp png_ptr, png_bytep data, png_size_t length) #if !defined(PNG_NO_STDIO) /* 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 - than changing the library. */ + * 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 + * than changing the library. + */ #ifndef USE_FAR_KEYWORD void PNGAPI png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) { png_uint_32 check; - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; #if defined(_WIN32_WCE) if ( !WriteFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) ) check = 0; @@ -56,10 +62,10 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) png_error(png_ptr, "Write Error"); } #else -/* this is the model-independent version. Since the standard I/O library - can't handle far buffers in the medium and small models, we have to copy - the data. -*/ +/* This is the model-independent version. Since the standard I/O library + * can't handle far buffers in the medium and small models, we have to copy + * the data. + */ #define NEAR_BUF_SIZE 1024 #define MIN(a,b) (a <= b ? a : b) @@ -71,7 +77,8 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */ png_FILE_p io_ptr; - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; /* Check if data really is near. If so, use usual code. */ near_data = (png_byte *)CVT_PTR_NOCHECK(data); io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr); @@ -93,7 +100,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) do { written = MIN(NEAR_BUF_SIZE, remaining); - png_memcpy(buf, data, written); /* copy far buffer to near buffer */ + png_memcpy(buf, data, written); /* Copy far buffer to near buffer */ #if defined(_WIN32_WCE) if ( !WriteFile(io_ptr, buf, written, &err, NULL) ) err = 0; @@ -102,8 +109,10 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) #endif if (err != written) break; + else check += err; + data += written; remaining -= written; } @@ -117,8 +126,9 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) #endif /* This function is called to output any data pending writing (normally - to disk). After png_flush is called, there should be no data pending - writing in any buffers. */ + * to disk). After png_flush is called, there should be no data pending + * writing in any buffers. + */ #if defined(PNG_WRITE_FLUSH_SUPPORTED) void /* PRIVATE */ png_flush(png_structp png_ptr) @@ -134,48 +144,58 @@ png_default_flush(png_structp png_ptr) #if !defined(_WIN32_WCE) png_FILE_p io_ptr; #endif - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; #if !defined(_WIN32_WCE) io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr)); - if (io_ptr != NULL && fileno(io_ptr) != -1) - fflush(io_ptr); + fflush(io_ptr); #endif } #endif #endif /* This function allows the application to supply new output functions for - libpng if standard C streams aren't being used. - - This function takes as its arguments: - png_ptr - pointer to a png output data structure - io_ptr - pointer to user supplied structure containing info about - the output functions. May be NULL. - write_data_fn - pointer to a new output function that takes as its - arguments a pointer to a png_struct, a pointer to - data to be written, and a 32-bit unsigned int that is - the number of bytes to be written. The new write - function should call png_error(png_ptr, "Error msg") - to exit and output any fatal error messages. - flush_data_fn - pointer to a new flush function that takes as its - arguments a pointer to a png_struct. After a call to - the flush function, there should be no data in any buffers - or pending transmission. If the output method doesn't do - any buffering of ouput, a function prototype must still be - supplied although it doesn't have to do anything. If - PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile - time, output_flush_fn will be ignored, although it must be - supplied for compatibility. */ + * libpng if standard C streams aren't being used. + * + * This function takes as its arguments: + * png_ptr - pointer to a png output data structure + * io_ptr - pointer to user supplied structure containing info about + * the output functions. May be NULL. + * write_data_fn - pointer to a new output function that takes as its + * arguments a pointer to a png_struct, a pointer to + * data to be written, and a 32-bit unsigned int that is + * the number of bytes to be written. The new write + * function should call png_error(png_ptr, "Error msg") + * to exit and output any fatal error messages. May be + * NULL, in which case libpng's default function will + * be used. + * flush_data_fn - pointer to a new flush function that takes as its + * arguments a pointer to a png_struct. After a call to + * the flush function, there should be no data in any buffers + * or pending transmission. If the output method doesn't do + * any buffering of ouput, a function prototype must still be + * supplied although it doesn't have to do anything. If + * PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile + * time, output_flush_fn will be ignored, although it must be + * supplied for compatibility. May be NULL, in which case + * libpng's default function will be used, if + * PNG_WRITE_FLUSH_SUPPORTED is defined. This is not + * a good idea if io_ptr does not point to a standard + * *FILE structure. + */ void PNGAPI png_set_write_fn(png_structp png_ptr, png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn) { - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; + png_ptr->io_ptr = io_ptr; #if !defined(PNG_NO_STDIO) if (write_data_fn != NULL) png_ptr->write_data_fn = write_data_fn; + else png_ptr->write_data_fn = png_default_write_data; #else @@ -186,6 +206,7 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr, #if !defined(PNG_NO_STDIO) if (output_flush_fn != NULL) png_ptr->output_flush_fn = output_flush_fn; + else png_ptr->output_flush_fn = png_default_flush; #else @@ -212,9 +233,11 @@ void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check) void FAR *far_ptr; FP_OFF(near_ptr) = FP_OFF(ptr); far_ptr = (void FAR *)near_ptr; + if (check != 0) if (FP_SEG(ptr) != FP_SEG(far_ptr)) png_error(png_ptr, "segment lost in conversion"); + return(near_ptr); } # else @@ -224,9 +247,11 @@ void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check) void FAR *far_ptr; near_ptr = (void FAR *)ptr; far_ptr = (void FAR *)near_ptr; + if (check != 0) if (far_ptr != ptr) png_error(png_ptr, "segment lost in conversion"); + return(near_ptr); } # endif @@ -1,14 +1,17 @@ /* pngwrite.c - general routines to write a PNG file * - * Last changed in libpng 1.2.34 [December 18, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [June 4, 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.) + * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h */ -/* get internal access to png.h */ +/* Get internal access to png.h */ #define PNG_INTERNAL #include "png.h" #ifdef PNG_WRITE_SUPPORTED @@ -30,7 +33,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr) return; if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE)) { - png_write_sig(png_ptr); /* write PNG signature */ + png_write_sig(png_ptr); /* Write PNG signature */ #if defined(PNG_MNG_FEATURES_SUPPORTED) if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&(png_ptr->mng_features_permitted)) { @@ -38,7 +41,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr) png_ptr->mng_features_permitted=0; } #endif - /* write IHDR information. */ + /* 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, @@ -47,8 +50,9 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr) #else 0); #endif - /* the rest of these check to see if the valid field has the appropriate - flag set, and if it does, writes the chunk. */ + /* 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) if (info_ptr->valid & PNG_INFO_gAMA) { @@ -97,14 +101,14 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr) #if defined(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++) - { + 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) && @@ -116,7 +120,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr) png_warning(png_ptr, "Writing zero-length unknown chunk"); png_write_chunk(png_ptr, up->name, up->data, up->size); } - } + } } #endif png_ptr->mode |= PNG_WROTE_INFO_BEFORE_PLTE; @@ -145,20 +149,20 @@ png_write_info(png_structp png_ptr, png_infop info_ptr) #if defined(PNG_WRITE_tRNS_SUPPORTED) if (info_ptr->valid & PNG_INFO_tRNS) - { + { #if defined(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++) - info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]); - } + /* 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++) + info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]); + } #endif png_write_tRNS(png_ptr, info_ptr->trans, &(info_ptr->trans_values), info_ptr->num_trans, info_ptr->color_type); - } + } #endif #if defined(PNG_WRITE_bKGD_SUPPORTED) if (info_ptr->valid & PNG_INFO_bKGD) @@ -179,49 +183,56 @@ png_write_info(png_structp png_ptr, png_infop info_ptr) info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams, info_ptr->pcal_units, info_ptr->pcal_params); #endif -#if defined(PNG_WRITE_sCAL_SUPPORTED) + +#if defined(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) png_write_sCAL(png_ptr, (int)info_ptr->scal_unit, info_ptr->scal_pixel_width, info_ptr->scal_pixel_height); -#else +#else /* !FLOATING_POINT */ #ifdef PNG_FIXED_POINT_SUPPORTED png_write_sCAL_s(png_ptr, (int)info_ptr->scal_unit, info_ptr->scal_s_width, info_ptr->scal_s_height); -#else +#endif /* FIXED_POINT */ +#endif /* FLOATING_POINT */ +#else /* !WRITE_sCAL */ png_warning(png_ptr, "png_write_sCAL not supported; sCAL chunk not written."); -#endif -#endif -#endif +#endif /* WRITE_sCAL */ +#endif /* sCAL */ + #if defined(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 +#endif /* pHYs */ + #if defined(PNG_WRITE_tIME_SUPPORTED) if (info_ptr->valid & PNG_INFO_tIME) { png_write_tIME(png_ptr, &(info_ptr->mod_time)); png_ptr->mode |= PNG_WROTE_tIME; } -#endif +#endif /* tIME */ + #if defined(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 +#endif /* sPLT */ + #if defined(PNG_WRITE_TEXT_SUPPORTED) /* Check to see if we need to write text chunks */ for (i = 0; i < info_ptr->num_text; i++) { png_debug2(2, "Writing header text chunk %d, type %d", i, info_ptr->text[i].compression); - /* an internationalized chunk? */ + /* An internationalized chunk? */ if (info_ptr->text[i].compression > 0) { #if defined(PNG_WRITE_iTXt_SUPPORTED) - /* write international chunk */ + /* Write international chunk */ png_write_iTXt(png_ptr, info_ptr->text[i].compression, info_ptr->text[i].key, @@ -238,7 +249,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr) else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt) { #if defined(PNG_WRITE_zTXt_SUPPORTED) - /* write compressed chunk */ + /* Write compressed chunk */ png_write_zTXt(png_ptr, info_ptr->text[i].key, info_ptr->text[i].text, 0, info_ptr->text[i].compression); @@ -251,18 +262,20 @@ 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) - /* write uncompressed chunk */ + /* Write uncompressed chunk */ png_write_tEXt(png_ptr, info_ptr->text[i].key, info_ptr->text[i].text, 0); + /* Mark this chunk as written */ + info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; #else + /* Can't get here */ png_warning(png_ptr, "Unable to write uncompressed text"); #endif - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; } } -#endif +#endif /* tEXt */ + #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED) if (info_ptr->unknown_chunks_num) { @@ -302,29 +315,29 @@ png_write_end(png_structp png_ptr, png_infop info_ptr) if (!(png_ptr->mode & PNG_HAVE_IDAT)) png_error(png_ptr, "No IDATs written into file"); - /* see if user wants us to write information chunks */ + /* See if user wants us to write information chunks */ if (info_ptr != NULL) { #if defined(PNG_WRITE_TEXT_SUPPORTED) - int i; /* local index variable */ + int i; /* Local index variable */ #endif #if defined(PNG_WRITE_tIME_SUPPORTED) - /* check to see if user has supplied a time chunk */ + /* 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) - /* loop through comment chunks */ + /* Loop through comment chunks */ for (i = 0; i < info_ptr->num_text; i++) { png_debug2(2, "Writing trailer text chunk %d, type %d", i, info_ptr->text[i].compression); - /* an internationalized chunk? */ + /* An internationalized chunk? */ if (info_ptr->text[i].compression > 0) { #if defined(PNG_WRITE_iTXt_SUPPORTED) - /* write international chunk */ + /* Write international chunk */ png_write_iTXt(png_ptr, info_ptr->text[i].compression, info_ptr->text[i].key, @@ -340,7 +353,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr) else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt) { #if defined(PNG_WRITE_zTXt_SUPPORTED) - /* write compressed chunk */ + /* Write compressed chunk */ png_write_zTXt(png_ptr, info_ptr->text[i].key, info_ptr->text[i].text, 0, info_ptr->text[i].compression); @@ -353,7 +366,7 @@ 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) - /* write uncompressed chunk */ + /* Write uncompressed chunk */ png_write_tEXt(png_ptr, info_ptr->text[i].key, info_ptr->text[i].text, 0); #else @@ -391,7 +404,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr) png_ptr->mode |= PNG_AFTER_IDAT; - /* write end of PNG file */ + /* Write end of PNG file */ png_write_IEND(png_ptr); /* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03, * and restored again in libpng-1.2.30, may cause some applications that @@ -471,7 +484,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, if (png_ptr == NULL) return (NULL); - /* added at libpng-1.2.6 */ + /* 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; @@ -542,7 +555,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, } } - /* initialize zbuf - compression buffer */ + /* 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); @@ -636,7 +649,7 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver, { 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; @@ -662,7 +675,7 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver, png_debug(1, "in png_write_init_3"); #ifdef PNG_SETJMP_SUPPORTED - /* save jump buffer and error functions */ + /* Save jump buffer and error functions */ png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf)); #endif @@ -673,24 +686,24 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver, *ptr_ptr = png_ptr; } - /* reset all variables to 0 */ + /* Reset all variables to 0 */ png_memset(png_ptr, 0, png_sizeof(png_struct)); - /* added at libpng-1.2.6 */ + /* Added at libpng-1.2.6 */ #ifdef PNG_SET_USER_LIMITS_SUPPORTED png_ptr->user_width_max=PNG_USER_WIDTH_MAX; png_ptr->user_height_max=PNG_USER_HEIGHT_MAX; #endif #ifdef PNG_SETJMP_SUPPORTED - /* restore jump buffer */ + /* Restore jump buffer */ png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf)); #endif png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL, png_flush_ptr_NULL); - /* initialize zbuf - compression buffer */ + /* 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); @@ -710,15 +723,15 @@ 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"); if (png_ptr == NULL) return; - /* loop through the rows */ + /* Loop through the rows */ for (i = 0, rp = row; i < num_rows; i++, rp++) { png_write_row(png_ptr, *rp); @@ -731,25 +744,26 @@ 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) - /* intialize interlace handling. If image is not interlaced, - this will set pass to 1 */ + /* Initialize interlace handling. If image is not interlaced, + * this will set pass to 1 + */ num_pass = png_set_interlace_handling(png_ptr); #else num_pass = 1; #endif - /* loop through passes */ + /* Loop through passes */ for (pass = 0; pass < num_pass; pass++) { - /* loop through image */ + /* Loop through image */ for (i = 0, rp = image; i < png_ptr->height; i++, rp++) { png_write_row(png_ptr, *rp); @@ -757,7 +771,7 @@ png_write_image(png_structp png_ptr, png_bytepp image) } } -/* called by user to write a row of image data */ +/* Called by user to write a row of image data */ void PNGAPI png_write_row(png_structp png_ptr, png_bytep row) { @@ -766,49 +780,49 @@ png_write_row(png_structp png_ptr, png_bytep row) png_debug2(1, "in png_write_row (row %ld, pass %d)", png_ptr->row_number, png_ptr->pass); - /* initialize transformations and other stuff if first time */ + /* Initialize transformations and other stuff if first time */ if (png_ptr->row_number == 0 && png_ptr->pass == 0) { - /* make sure we wrote the header info */ - if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE)) - png_error(png_ptr, - "png_write_info was never called before png_write_row."); + /* Make sure we wrote the header info */ + if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE)) + png_error(png_ptr, + "png_write_info was never called before png_write_row."); - /* check for transforms that have been set but were defined out */ + /* Check for transforms that have been set but were defined out */ #if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED) - if (png_ptr->transformations & PNG_INVERT_MONO) - png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined."); + if (png_ptr->transformations & PNG_INVERT_MONO) + png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined."); #endif #if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED) - if (png_ptr->transformations & PNG_FILLER) - png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined."); + if (png_ptr->transformations & PNG_FILLER) + png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined."); #endif #if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && defined(PNG_READ_PACKSWAP_SUPPORTED) - if (png_ptr->transformations & PNG_PACKSWAP) - png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined."); + if (png_ptr->transformations & PNG_PACKSWAP) + png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined."); #endif #if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED) - if (png_ptr->transformations & PNG_PACK) - png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined."); + if (png_ptr->transformations & PNG_PACK) + png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined."); #endif #if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED) - if (png_ptr->transformations & PNG_SHIFT) - png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined."); + if (png_ptr->transformations & PNG_SHIFT) + png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined."); #endif #if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED) - if (png_ptr->transformations & PNG_BGR) - png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined."); + if (png_ptr->transformations & PNG_BGR) + png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined."); #endif #if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED) - if (png_ptr->transformations & PNG_SWAP_BYTES) - png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined."); + if (png_ptr->transformations & PNG_SWAP_BYTES) + png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined."); #endif png_write_start_row(png_ptr); } #if defined(PNG_WRITE_INTERLACING_SUPPORTED) - /* if interlaced and not interested in row, return */ + /* If interlaced and not interested in row, return */ if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE)) { switch (png_ptr->pass) @@ -866,7 +880,7 @@ png_write_row(png_structp png_ptr, png_bytep row) } #endif - /* set up row info for transformations */ + /* Set up row info for transformations */ png_ptr->row_info.color_type = png_ptr->color_type; png_ptr->row_info.width = png_ptr->usr_width; png_ptr->row_info.channels = png_ptr->usr_channels; @@ -889,13 +903,13 @@ png_write_row(png_structp png_ptr, png_bytep row) png_ptr->row_info.rowbytes); #if defined(PNG_WRITE_INTERLACING_SUPPORTED) - /* handle interlacing */ + /* Handle interlacing */ if (png_ptr->interlaced && png_ptr->pass < 6 && (png_ptr->transformations & PNG_INTERLACE)) { png_do_write_interlace(&(png_ptr->row_info), png_ptr->row_buf + 1, png_ptr->pass); - /* this should always get caught above, but still ... */ + /* This should always get caught above, but still ... */ if (!(png_ptr->row_info.width)) { png_write_finish_row(png_ptr); @@ -904,7 +918,7 @@ png_write_row(png_structp png_ptr, png_bytep row) } #endif - /* handle other transformations */ + /* Handle other transformations */ if (png_ptr->transformations) png_do_write_transformations(png_ptr); @@ -944,7 +958,7 @@ png_set_flush(png_structp png_ptr, int nrows) png_ptr->flush_dist = (nrows < 0 ? 0 : nrows); } -/* flush the current output buffers now */ +/* Flush the current output buffers now */ void PNGAPI png_write_flush(png_structp png_ptr) { @@ -955,17 +969,17 @@ png_write_flush(png_structp png_ptr) return; /* We have already written out all of the data */ if (png_ptr->row_number >= png_ptr->num_rows) - return; + return; do { int ret; - /* compress the data */ + /* Compress the data */ ret = deflate(&png_ptr->zstream, Z_SYNC_FLUSH); wrote_IDAT = 0; - /* check for compression errors */ + /* Check for compression errors */ if (ret != Z_OK) { if (png_ptr->zstream.msg != NULL) @@ -976,7 +990,7 @@ png_write_flush(png_structp png_ptr) if (!(png_ptr->zstream.avail_out)) { - /* write the IDAT and reset the zlib output buffer */ + /* Write the IDAT and reset the zlib output buffer */ png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size); png_ptr->zstream.next_out = png_ptr->zbuf; @@ -988,7 +1002,7 @@ png_write_flush(png_structp png_ptr) /* If there is any data left to be output, write it into a new IDAT */ if (png_ptr->zbuf_size != png_ptr->zstream.avail_out) { - /* write the IDAT and reset the zlib output buffer */ + /* Write the IDAT and reset the zlib output buffer */ png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size - png_ptr->zstream.avail_out); png_ptr->zstream.next_out = png_ptr->zbuf; @@ -999,7 +1013,7 @@ png_write_flush(png_structp png_ptr) } #endif /* PNG_WRITE_FLUSH_SUPPORTED */ -/* free all memory used by the write */ +/* Free all memory used by the write */ void PNGAPI png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr) { @@ -1075,7 +1089,7 @@ void /* PRIVATE */ png_write_destroy(png_structp png_ptr) { #ifdef PNG_SETJMP_SUPPORTED - jmp_buf tmp_jmp; /* save jump buffer */ + jmp_buf tmp_jmp; /* Save jump buffer */ #endif png_error_ptr error_fn; png_error_ptr warning_fn; @@ -1085,10 +1099,10 @@ png_write_destroy(png_structp png_ptr) #endif png_debug(1, "in png_write_destroy"); - /* free any memory zlib uses */ + /* Free any memory zlib uses */ deflateEnd(&png_ptr->zstream); - /* free our memory. png_free checks NULL for us. */ + /* 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 @@ -1112,7 +1126,7 @@ png_write_destroy(png_structp png_ptr) #endif #ifdef PNG_SETJMP_SUPPORTED - /* reset structure */ + /* Reset structure */ png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf)); #endif @@ -1415,7 +1429,7 @@ png_set_compression_window_bits(png_structp png_ptr, int window_bits) else if (window_bits < 8) png_warning(png_ptr, "Only compression windows >= 256 supported by PNG"); #ifndef WBITS_8_OK - /* avoid libpng bug with 256-byte windows */ + /* Avoid libpng bug with 256-byte windows */ if (window_bits == 8) { png_warning(png_ptr, "Compression window is being reset to 512"); @@ -1468,9 +1482,9 @@ png_write_png(png_structp png_ptr, png_infop info_ptr, if (png_ptr == NULL || info_ptr == NULL) return; #if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) - /* invert the alpha channel from opacity to transparency */ + /* Invert the alpha channel from opacity to transparency */ if (transforms & PNG_TRANSFORM_INVERT_ALPHA) - png_set_invert_alpha(png_ptr); + png_set_invert_alpha(png_ptr); #endif /* Write the file header information. */ @@ -1479,9 +1493,9 @@ png_write_png(png_structp png_ptr, png_infop info_ptr, /* ------ these transformations don't touch the info structure ------- */ #if defined(PNG_WRITE_INVERT_SUPPORTED) - /* invert monochrome pixels */ + /* Invert monochrome pixels */ if (transforms & PNG_TRANSFORM_INVERT_MONO) - png_set_invert_mono(png_ptr); + png_set_invert_mono(png_ptr); #endif #if defined(PNG_WRITE_SHIFT_SUPPORTED) @@ -1490,57 +1504,57 @@ png_write_png(png_structp png_ptr, png_infop info_ptr, */ if ((transforms & PNG_TRANSFORM_SHIFT) && (info_ptr->valid & PNG_INFO_sBIT)) - png_set_shift(png_ptr, &info_ptr->sig_bit); + png_set_shift(png_ptr, &info_ptr->sig_bit); #endif #if defined(PNG_WRITE_PACK_SUPPORTED) - /* pack pixels into bytes */ + /* Pack pixels into bytes */ if (transforms & PNG_TRANSFORM_PACKING) png_set_packing(png_ptr); #endif #if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) - /* swap location of alpha bytes from ARGB to RGBA */ + /* Swap location of alpha bytes from ARGB to RGBA */ if (transforms & PNG_TRANSFORM_SWAP_ALPHA) - png_set_swap_alpha(png_ptr); + png_set_swap_alpha(png_ptr); #endif #if defined(PNG_WRITE_FILLER_SUPPORTED) /* Pack XRGB/RGBX/ARGB/RGBA into * RGB (4 channels -> 3 channels) */ - if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER) + if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER) png_set_filler(png_ptr, 0, PNG_FILLER_AFTER); - else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE) + else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE) png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE); #endif #if defined(PNG_WRITE_BGR_SUPPORTED) - /* flip BGR pixels to RGB */ + /* Flip BGR pixels to RGB */ if (transforms & PNG_TRANSFORM_BGR) - png_set_bgr(png_ptr); + png_set_bgr(png_ptr); #endif #if defined(PNG_WRITE_SWAP_SUPPORTED) - /* swap bytes of 16-bit files to most significant byte first */ + /* Swap bytes of 16-bit files to most significant byte first */ if (transforms & PNG_TRANSFORM_SWAP_ENDIAN) - png_set_swap(png_ptr); + png_set_swap(png_ptr); #endif #if defined(PNG_WRITE_PACKSWAP_SUPPORTED) - /* swap bits of 1, 2, 4 bit packed pixel formats */ + /* Swap bits of 1, 2, 4 bit packed pixel formats */ if (transforms & PNG_TRANSFORM_PACKSWAP) - png_set_packswap(png_ptr); + png_set_packswap(png_ptr); #endif /* ----------------------- end of transformations ------------------- */ - /* write the bits */ + /* Write the bits */ if (info_ptr->valid & PNG_INFO_IDAT) png_write_image(png_ptr, info_ptr->row_pointers); /* It is REQUIRED to call this to finish writing the rest of the file */ png_write_end(png_ptr, info_ptr); - transforms = transforms; /* quiet compiler warnings */ + transforms = transforms; /* Quiet compiler warnings */ params = params; } #endif @@ -1,11 +1,14 @@ /* pngwtran.c - transforms the data in a row for PNG writers * - * Last changed in libpng 1.2.9 April 14, 2006 - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2006 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [June 4, 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.) + * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h */ #define PNG_INTERNAL @@ -26,7 +29,7 @@ png_do_write_transformations(png_structp png_ptr) #if defined(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 */ + (*(png_ptr->write_user_transform_fn)) /* User write transform function */ (png_ptr, /* png_ptr */ &(png_ptr->row_info), /* row_info: */ /* png_uint_32 width; width of row */ @@ -248,7 +251,7 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth) channels++; } - /* with low row depths, could only be grayscale, so one channel */ + /* With low row depths, could only be grayscale, so one channel */ if (row_info->bit_depth < 8) { png_bytep bp = row; @@ -439,7 +442,7 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row) png_uint_32 row_width = row_info->width; for (i = 0, sp = dp = row; i < row_width; i++) { - /* does nothing + /* Does nothing *(dp++) = *(sp++); *(dp++) = *(sp++); *(dp++) = *(sp++); @@ -457,7 +460,7 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row) for (i = 0, sp = dp = row; i < row_width; i++) { - /* does nothing + /* Does nothing *(dp++) = *(sp++); *(dp++) = *(sp++); *(dp++) = *(sp++); @@ -495,7 +498,7 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row) for (i = 0, sp = dp = row; i < row_width; i++) { - /* does nothing + /* Does nothing *(dp++) = *(sp++); *(dp++) = *(sp++); */ @@ -510,7 +513,7 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row) #endif #if defined(PNG_MNG_FEATURES_SUPPORTED) -/* undoes intrapixel differencing */ +/* Undoes intrapixel differencing */ void /* PRIVATE */ png_do_write_intrapixel(png_row_infop row_info, png_bytep row) { @@ -1,11 +1,14 @@ /* pngwutil.c - utilities to write a PNG file * - * Last changed in libpng 1.2.34 [December 18, 2008] - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2008 Glenn Randers-Pehrson + * Last changed in libpng 1.2.37 [June 4, 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.) + * + * This code is released under the libpng license. + * For conditions of distribution and use, see the disclaimer + * and license in png.h */ #define PNG_INTERNAL @@ -60,7 +63,7 @@ png_write_sig(png_structp png_ptr) { png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10}; - /* write the rest of the 8 byte signature */ + /* Write the rest of the 8 byte signature */ png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes], (png_size_t)(8 - png_ptr->sig_bytes)); if (png_ptr->sig_bytes < 3) @@ -80,7 +83,8 @@ void PNGAPI png_write_chunk(png_structp png_ptr, png_bytep chunk_name, png_bytep data, png_size_t length) { - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; png_write_chunk_start(png_ptr, chunk_name, (png_uint_32)length); png_write_chunk_data(png_ptr, data, (png_size_t)length); png_write_chunk_end(png_ptr); @@ -98,15 +102,16 @@ png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name, png_debug2(0, "Writing %s chunk, length = %lu", chunk_name, (unsigned long)length); - if (png_ptr == NULL) return; + if (png_ptr == NULL) + return; - /* write the length and the chunk name */ + /* Write the length and the chunk name */ png_save_uint_32(buf, length); png_memcpy(buf + 4, chunk_name, 4); png_write_data(png_ptr, buf, (png_size_t)8); - /* put the chunk name into png_ptr->chunk_name */ + /* Put the chunk name into png_ptr->chunk_name */ png_memcpy(png_ptr->chunk_name, chunk_name, 4); - /* reset the crc and run it over the chunk name */ + /* Reset the crc and run it over the chunk name */ png_reset_crc(png_ptr); png_calculate_crc(png_ptr, chunk_name, (png_size_t)4); } @@ -119,12 +124,13 @@ png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name, void PNGAPI png_write_chunk_data(png_structp png_ptr, png_bytep data, png_size_t length) { - /* write the data, and run the CRC over it */ - if (png_ptr == NULL) return; + /* Write the data, and run the CRC over it */ + if (png_ptr == NULL) + return; if (data != NULL && length > 0) { png_write_data(png_ptr, data, length); - /* update the CRC after writing the data, + /* Update the CRC after writing the data, * in case that the user I/O routine alters it. */ png_calculate_crc(png_ptr, data, length); @@ -139,15 +145,14 @@ png_write_chunk_end(png_structp png_ptr) if (png_ptr == NULL) return; - /* write the crc in a single operation */ + /* Write the crc in a single operation */ png_save_uint_32(buf, png_ptr->crc); png_write_data(png_ptr, buf, (png_size_t)4); } #if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_iCCP_SUPPORTED) -/* - * This pair of functions encapsulates the operation of (a) compressing a +/* This pair of functions encapsulates the operation of (a) compressing a * text string, and (b) issuing it later as a series of chunk data writes. * The compression_state structure is shared context for these functions * set up by the caller in order to make the whole mess thread-safe. @@ -155,14 +160,14 @@ png_write_chunk_end(png_structp png_ptr) typedef struct { - char *input; /* the uncompressed input data */ - int input_len; /* its length */ - int num_output_ptr; /* number of output pointers used */ - int max_output_ptr; /* size of output_ptr */ - png_charpp output_ptr; /* array of pointers to output */ + char *input; /* The uncompressed input data */ + int input_len; /* Its length */ + int num_output_ptr; /* Number of output pointers used */ + int max_output_ptr; /* Size of output_ptr */ + png_charpp output_ptr; /* Array of pointers to output */ } compression_state; -/* compress given text into storage in the png_ptr structure */ +/* Compress given text into storage in the png_ptr structure */ static int /* PRIVATE */ png_text_compress(png_structp png_ptr, png_charp text, png_size_t text_len, int compression, @@ -176,7 +181,7 @@ png_text_compress(png_structp png_ptr, comp->input = NULL; comp->input_len = 0; - /* we may just want to pass the text right through */ + /* We may just want to pass the text right through */ if (compression == PNG_TEXT_COMPRESSION_NONE) { comp->input = text; @@ -210,29 +215,29 @@ png_text_compress(png_structp png_ptr, * wouldn't cause a failure, just a slowdown due to swapping). */ - /* set up the compression buffers */ + /* Set up the compression buffers */ png_ptr->zstream.avail_in = (uInt)text_len; png_ptr->zstream.next_in = (Bytef *)text; png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; png_ptr->zstream.next_out = (Bytef *)png_ptr->zbuf; - /* this is the same compression loop as in png_write_row() */ + /* This is the same compression loop as in png_write_row() */ do { - /* compress the data */ + /* Compress the data */ ret = deflate(&png_ptr->zstream, Z_NO_FLUSH); if (ret != Z_OK) { - /* error */ + /* Error */ if (png_ptr->zstream.msg != NULL) png_error(png_ptr, png_ptr->zstream.msg); else png_error(png_ptr, "zlib error"); } - /* check to see if we need more room */ + /* Check to see if we need more room */ if (!(png_ptr->zstream.avail_out)) { - /* make sure the output array has room */ + /* Make sure the output array has room */ if (comp->num_output_ptr >= comp->max_output_ptr) { int old_max; @@ -257,7 +262,7 @@ png_text_compress(png_structp png_ptr, (comp->max_output_ptr * png_sizeof(png_charp))); } - /* save the data */ + /* Save the data */ comp->output_ptr[comp->num_output_ptr] = (png_charp)png_malloc(png_ptr, (png_uint_32)png_ptr->zbuf_size); @@ -269,21 +274,21 @@ png_text_compress(png_structp png_ptr, png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; png_ptr->zstream.next_out = png_ptr->zbuf; } - /* continue until we don't have any more to compress */ + /* Continue until we don't have any more to compress */ } while (png_ptr->zstream.avail_in); - /* finish the compression */ + /* Finish the compression */ do { - /* tell zlib we are finished */ + /* Tell zlib we are finished */ ret = deflate(&png_ptr->zstream, Z_FINISH); if (ret == Z_OK) { - /* check to see if we need more room */ + /* Check to see if we need more room */ if (!(png_ptr->zstream.avail_out)) { - /* check to make sure our output array has room */ + /* Check to make sure our output array has room */ if (comp->num_output_ptr >= comp->max_output_ptr) { int old_max; @@ -309,7 +314,7 @@ png_text_compress(png_structp png_ptr, png_sizeof(png_charp))); } - /* save off the data */ + /* Save the data */ comp->output_ptr[comp->num_output_ptr] = (png_charp)png_malloc(png_ptr, (png_uint_32)png_ptr->zbuf_size); @@ -324,7 +329,7 @@ png_text_compress(png_structp png_ptr, } else if (ret != Z_STREAM_END) { - /* we got an error */ + /* We got an error */ if (png_ptr->zstream.msg != NULL) png_error(png_ptr, png_ptr->zstream.msg); else @@ -332,7 +337,7 @@ png_text_compress(png_structp png_ptr, } } while (ret != Z_STREAM_END); - /* text length is number of buffers plus last buffer */ + /* Text length is number of buffers plus last buffer */ text_len = png_ptr->zbuf_size * comp->num_output_ptr; if (png_ptr->zstream.avail_out < png_ptr->zbuf_size) text_len += png_ptr->zbuf_size - (png_size_t)png_ptr->zstream.avail_out; @@ -340,21 +345,21 @@ png_text_compress(png_structp png_ptr, return((int)text_len); } -/* ship the compressed text out via chunk writes */ +/* Ship the compressed text out via chunk writes */ static void /* PRIVATE */ png_write_compressed_data_out(png_structp png_ptr, compression_state *comp) { int i; - /* handle the no-compression case */ + /* Handle the no-compression case */ if (comp->input) { - png_write_chunk_data(png_ptr, (png_bytep)comp->input, + png_write_chunk_data(png_ptr, (png_bytep)comp->input, (png_size_t)comp->input_len); - return; + return; } - /* write saved output buffers, if any */ + /* Write saved output buffers, if any */ for (i = 0; i < comp->num_output_ptr; i++) { png_write_chunk_data(png_ptr, (png_bytep)comp->output_ptr[i], @@ -365,12 +370,12 @@ png_write_compressed_data_out(png_structp png_ptr, compression_state *comp) if (comp->max_output_ptr != 0) png_free(png_ptr, comp->output_ptr); comp->output_ptr=NULL; - /* write anything left in zbuf */ + /* Write anything left in zbuf */ if (png_ptr->zstream.avail_out < (png_uint_32)png_ptr->zbuf_size) png_write_chunk_data(png_ptr, png_ptr->zbuf, (png_size_t)(png_ptr->zbuf_size - png_ptr->zstream.avail_out)); - /* reset zlib for another zTXt/iTXt or image data */ + /* Reset zlib for another zTXt/iTXt or image data */ deflateReset(&png_ptr->zstream); png_ptr->zstream.data_type = Z_BINARY; } @@ -390,7 +395,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height, #endif int ret; - png_byte buf[13]; /* buffer to store the IHDR info */ + png_byte buf[13]; /* Buffer to store the IHDR info */ png_debug(1, "in png_write_IHDR"); /* Check that we have valid input data from the application info */ @@ -476,7 +481,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height, interlace_type=PNG_INTERLACE_NONE; #endif - /* save off the relevent information */ + /* Save the relevent information */ png_ptr->bit_depth = (png_byte)bit_depth; png_ptr->color_type = (png_byte)color_type; png_ptr->interlaced = (png_byte)interlace_type; @@ -489,12 +494,12 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height, png_ptr->pixel_depth = (png_byte)(bit_depth * png_ptr->channels); png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width); - /* set the usr info, so any transformations can modify it */ + /* Set the usr info, so any transformations can modify it */ png_ptr->usr_width = png_ptr->width; png_ptr->usr_bit_depth = png_ptr->bit_depth; png_ptr->usr_channels = png_ptr->channels; - /* pack the header information into the buffer */ + /* Pack the header information into the buffer */ png_save_uint_32(buf, width); png_save_uint_32(buf + 4, height); buf[8] = (png_byte)bit_depth; @@ -503,10 +508,10 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height, buf[11] = (png_byte)filter_type; buf[12] = (png_byte)interlace_type; - /* write the chunk */ + /* Write the chunk */ png_write_chunk(png_ptr, (png_bytep)png_IHDR, buf, (png_size_t)13); - /* initialize zlib with PNG info */ + /* Initialize zlib with PNG info */ png_ptr->zstream.zalloc = png_zalloc; png_ptr->zstream.zfree = png_zfree; png_ptr->zstream.opaque = (voidpf)png_ptr; @@ -549,13 +554,13 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height, png_ptr->zstream.next_out = png_ptr->zbuf; png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; /* libpng is not interested in zstream.data_type */ - /* set it to a predefined value, to avoid its evaluation inside zlib */ + /* Set it to a predefined value, to avoid its evaluation inside zlib */ png_ptr->zstream.data_type = Z_BINARY; png_ptr->mode = PNG_HAVE_IHDR; } -/* write the palette. We are careful not to trust png_color to be in the +/* Write the palette. We are careful not to trust png_color to be in the * correct order for PNG, so people can redefine it to any convenient * structure. */ @@ -622,7 +627,7 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal) png_ptr->mode |= PNG_HAVE_PLTE; } -/* write an IDAT chunk */ +/* Write an IDAT chunk */ void /* PRIVATE */ png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length) { @@ -639,9 +644,11 @@ png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length) unsigned int z_cmf = data[0]; /* zlib compression method and flags */ if ((z_cmf & 0x0f) == 8 && (z_cmf & 0xf0) <= 0x70) { - /* Avoid memory underflows and multiplication overflows. */ - /* The conditions below are practically always satisfied; - however, they still must be checked. */ + /* Avoid memory underflows and multiplication overflows. + * + * The conditions below are practically always satisfied; + * however, they still must be checked. + */ if (length >= 2 && png_ptr->height < 16384 && png_ptr->width < 16384) { @@ -674,7 +681,7 @@ png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length) png_ptr->mode |= PNG_HAVE_IDAT; } -/* write an IEND chunk */ +/* Write an IEND chunk */ void /* PRIVATE */ png_write_IEND(png_structp png_ptr) { @@ -688,7 +695,7 @@ png_write_IEND(png_structp png_ptr) } #if defined(PNG_WRITE_gAMA_SUPPORTED) -/* write a gAMA chunk */ +/* Write a gAMA chunk */ #ifdef PNG_FLOATING_POINT_SUPPORTED void /* PRIVATE */ png_write_gAMA(png_structp png_ptr, double file_gamma) @@ -724,7 +731,7 @@ png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma) #endif #if defined(PNG_WRITE_sRGB_SUPPORTED) -/* write a sRGB chunk */ +/* Write a sRGB chunk */ void /* PRIVATE */ png_write_sRGB(png_structp png_ptr, int srgb_intent) { @@ -743,7 +750,7 @@ png_write_sRGB(png_structp png_ptr, int srgb_intent) #endif #if defined(PNG_WRITE_iCCP_SUPPORTED) -/* write an iCCP chunk */ +/* Write an iCCP chunk */ void /* PRIVATE */ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type, png_charp profile, int profile_len) @@ -785,6 +792,7 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type, { png_warning(png_ptr, "Embedded profile length too large in iCCP chunk"); + png_free(png_ptr, new_name); return; } @@ -799,7 +807,7 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type, profile_len = png_text_compress(png_ptr, profile, (png_size_t)profile_len, PNG_COMPRESSION_TYPE_BASE, &comp); - /* make sure we include the NULL after the name and the compression type */ + /* Make sure we include the NULL after the name and the compression type */ png_write_chunk_start(png_ptr, (png_bytep)png_iCCP, (png_uint_32)(name_len + profile_len + 2)); new_name[name_len + 1] = 0x00; @@ -815,7 +823,7 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type, #endif #if defined(PNG_WRITE_sPLT_SUPPORTED) -/* write a sPLT chunk */ +/* Write a sPLT chunk */ void /* PRIVATE */ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette) { @@ -833,18 +841,17 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette) #endif png_debug(1, "in png_write_sPLT"); - if ((name_len = png_check_keyword(png_ptr, - spalette->name, &new_name))==0) - return; + if ((name_len = png_check_keyword(png_ptr,spalette->name, &new_name))==0) + return; - /* make sure we include the NULL after the name */ + /* Make sure we include the NULL after the name */ png_write_chunk_start(png_ptr, (png_bytep)png_sPLT, (png_uint_32)(name_len + 2 + palette_size)); png_write_chunk_data(png_ptr, (png_bytep)new_name, (png_size_t)(name_len + 1)); png_write_chunk_data(png_ptr, (png_bytep)&spalette->depth, (png_size_t)1); - /* loop through each palette entry, writing appropriately */ + /* Loop through each palette entry, writing appropriately */ #ifndef PNG_NO_POINTER_INDEXING for (ep = spalette->entries; ep<spalette->entries + spalette->nentries; ep++) { @@ -896,7 +903,7 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette) #endif #if defined(PNG_WRITE_sBIT_SUPPORTED) -/* write the sBIT chunk */ +/* Write the sBIT chunk */ void /* PRIVATE */ png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type) { @@ -907,7 +914,7 @@ png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type) png_size_t size; png_debug(1, "in png_write_sBIT"); - /* make sure we don't depend upon the order of PNG_COLOR_8 */ + /* Make sure we don't depend upon the order of PNG_COLOR_8 */ if (color_type & PNG_COLOR_MASK_COLOR) { png_byte maxbits; @@ -952,7 +959,7 @@ png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type) #endif #if defined(PNG_WRITE_cHRM_SUPPORTED) -/* write the cHRM chunk */ +/* Write the cHRM chunk */ #ifdef PNG_FLOATING_POINT_SUPPORTED void /* PRIVATE */ png_write_cHRM(png_structp png_ptr, double white_x, double white_y, @@ -983,21 +990,21 @@ png_write_cHRM(png_structp png_ptr, double white_x, double white_y, int_red_x, int_red_y, int_green_x, int_green_y, int_blue_x, int_blue_y)) #endif { - /* each value is saved in 1/100,000ths */ - - png_save_uint_32(buf, int_white_x); - png_save_uint_32(buf + 4, int_white_y); + /* Each value is saved in 1/100,000ths */ - png_save_uint_32(buf + 8, int_red_x); - png_save_uint_32(buf + 12, int_red_y); + png_save_uint_32(buf, int_white_x); + png_save_uint_32(buf + 4, int_white_y); - png_save_uint_32(buf + 16, int_green_x); - png_save_uint_32(buf + 20, int_green_y); + png_save_uint_32(buf + 8, int_red_x); + png_save_uint_32(buf + 12, int_red_y); - png_save_uint_32(buf + 24, int_blue_x); - png_save_uint_32(buf + 28, int_blue_y); + png_save_uint_32(buf + 16, int_green_x); + png_save_uint_32(buf + 20, int_green_y); - png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32); + png_save_uint_32(buf + 24, int_blue_x); + png_save_uint_32(buf + 28, int_blue_y); + + png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32); } } #endif @@ -1014,32 +1021,32 @@ png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x, png_byte buf[32]; png_debug(1, "in png_write_cHRM"); - /* each value is saved in 1/100,000ths */ + /* Each value is saved in 1/100,000ths */ #if !defined(PNG_NO_CHECK_cHRM) if (png_check_cHRM_fixed(png_ptr, white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y)) #endif { - png_save_uint_32(buf, (png_uint_32)white_x); - png_save_uint_32(buf + 4, (png_uint_32)white_y); + png_save_uint_32(buf, (png_uint_32)white_x); + png_save_uint_32(buf + 4, (png_uint_32)white_y); - png_save_uint_32(buf + 8, (png_uint_32)red_x); - png_save_uint_32(buf + 12, (png_uint_32)red_y); + png_save_uint_32(buf + 8, (png_uint_32)red_x); + png_save_uint_32(buf + 12, (png_uint_32)red_y); - png_save_uint_32(buf + 16, (png_uint_32)green_x); - png_save_uint_32(buf + 20, (png_uint_32)green_y); + png_save_uint_32(buf + 16, (png_uint_32)green_x); + png_save_uint_32(buf + 20, (png_uint_32)green_y); - png_save_uint_32(buf + 24, (png_uint_32)blue_x); - png_save_uint_32(buf + 28, (png_uint_32)blue_y); + png_save_uint_32(buf + 24, (png_uint_32)blue_x); + png_save_uint_32(buf + 28, (png_uint_32)blue_y); - png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32); + png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32); } } #endif #endif #if defined(PNG_WRITE_tRNS_SUPPORTED) -/* write the tRNS chunk */ +/* Write the tRNS chunk */ void /* PRIVATE */ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran, int num_trans, int color_type) @@ -1057,13 +1064,13 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran, png_warning(png_ptr, "Invalid number of transparent colors specified"); return; } - /* write the chunk out as it is */ + /* Write the chunk out as it is */ png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans, (png_size_t)num_trans); } else if (color_type == PNG_COLOR_TYPE_GRAY) { - /* one 16 bit value */ + /* One 16 bit value */ if (tran->gray >= (1 << png_ptr->bit_depth)) { png_warning(png_ptr, @@ -1075,7 +1082,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran, } else if (color_type == PNG_COLOR_TYPE_RGB) { - /* three 16 bit values */ + /* Three 16 bit values */ png_save_uint_16(buf, tran->red); png_save_uint_16(buf + 2, tran->green); png_save_uint_16(buf + 4, tran->blue); @@ -1095,7 +1102,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran, #endif #if defined(PNG_WRITE_bKGD_SUPPORTED) -/* write the background chunk */ +/* Write the background chunk */ void /* PRIVATE */ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type) { @@ -1148,7 +1155,7 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type) #endif #if defined(PNG_WRITE_hIST_SUPPORTED) -/* write the histogram */ +/* Write the histogram */ void /* PRIVATE */ png_write_hIST(png_structp png_ptr, png_uint_16p hist, int num_hist) { @@ -1248,8 +1255,8 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key) while (*kp == ' ') { - *(kp--) = '\0'; - key_len--; + *(kp--) = '\0'; + key_len--; } } @@ -1261,8 +1268,8 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key) while (*kp == ' ') { - kp++; - key_len--; + kp++; + key_len--; } } @@ -1310,7 +1317,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key) #endif #if defined(PNG_WRITE_tEXt_SUPPORTED) -/* write a tEXt chunk */ +/* Write a tEXt chunk */ void /* PRIVATE */ png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text, png_size_t text_len) @@ -1330,7 +1337,7 @@ png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text, else text_len = png_strlen(text); - /* make sure we include the 0 after the key */ + /* Make sure we include the 0 after the key */ png_write_chunk_start(png_ptr, (png_bytep)png_tEXt, (png_uint_32)(key_len + text_len + 1)); /* @@ -1350,7 +1357,7 @@ png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text, #endif #if defined(PNG_WRITE_zTXt_SUPPORTED) -/* write a compressed text chunk */ +/* Write a compressed text chunk */ void /* PRIVATE */ png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text, png_size_t text_len, int compression) @@ -1386,31 +1393,31 @@ png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text, text_len = png_strlen(text); - /* compute the compressed data; do it now for the length */ + /* Compute the compressed data; do it now for the length */ text_len = png_text_compress(png_ptr, text, text_len, compression, &comp); - /* write start of chunk */ + /* Write start of chunk */ png_write_chunk_start(png_ptr, (png_bytep)png_zTXt, (png_uint_32)(key_len+text_len + 2)); - /* write key */ + /* Write key */ png_write_chunk_data(png_ptr, (png_bytep)new_key, (png_size_t)(key_len + 1)); png_free(png_ptr, new_key); buf[0] = (png_byte)compression; - /* write compression */ + /* Write compression */ png_write_chunk_data(png_ptr, (png_bytep)buf, (png_size_t)1); - /* write the compressed data */ + /* Write the compressed data */ png_write_compressed_data_out(png_ptr, &comp); - /* close the chunk */ + /* Close the chunk */ png_write_chunk_end(png_ptr); } #endif #if defined(PNG_WRITE_iTXt_SUPPORTED) -/* write an iTXt chunk */ +/* Write an iTXt chunk */ void /* PRIVATE */ png_write_iTXt(png_structp png_ptr, int compression, png_charp key, png_charp lang, png_charp lang_key, png_charp text) @@ -1442,21 +1449,21 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key, } if (lang_key == NULL) - lang_key_len = 0; + lang_key_len = 0; else - lang_key_len = png_strlen(lang_key); + lang_key_len = png_strlen(lang_key); if (text == NULL) text_len = 0; else - text_len = png_strlen(text); + text_len = png_strlen(text); - /* compute the compressed data; do it now for the length */ + /* Compute the compressed data; do it now for the length */ text_len = png_text_compress(png_ptr, text, text_len, compression-2, &comp); - /* make sure we include the compression flag, the compression byte, + /* Make sure we include the compression flag, the compression byte, * and the NULs after the key, lang, and lang_key parts */ png_write_chunk_start(png_ptr, (png_bytep)png_iTXt, @@ -1467,8 +1474,7 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key, + lang_key_len + text_len)); - /* - * We leave it to the application to meet PNG-1.0 requirements on the + /* We leave it to the application to meet PNG-1.0 requirements on the * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of * any non-Latin-1 characters except for NEWLINE. ISO PNG will forbid them. * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG. @@ -1476,13 +1482,13 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key, png_write_chunk_data(png_ptr, (png_bytep)new_key, (png_size_t)(key_len + 1)); - /* set the compression flag */ + /* Set the compression flag */ if (compression == PNG_ITXT_COMPRESSION_NONE || \ compression == PNG_TEXT_COMPRESSION_NONE) cbuf[0] = 0; else /* compression == PNG_ITXT_COMPRESSION_zTXt */ cbuf[0] = 1; - /* set the compression method */ + /* Set the compression method */ cbuf[1] = 0; png_write_chunk_data(png_ptr, cbuf, (png_size_t)2); @@ -1500,7 +1506,7 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key, #endif #if defined(PNG_WRITE_oFFs_SUPPORTED) -/* write the oFFs chunk */ +/* Write the oFFs chunk */ void /* PRIVATE */ png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset, int unit_type) @@ -1522,7 +1528,7 @@ png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset, } #endif #if defined(PNG_WRITE_pCAL_SUPPORTED) -/* write the pCAL chunk (described in the PNG extensions document) */ +/* 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, png_int_32 X1, int type, int nparams, png_charp units, png_charpp params) @@ -1584,7 +1590,7 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0, #endif #if defined(PNG_WRITE_sCAL_SUPPORTED) -/* write the sCAL chunk */ +/* Write the sCAL chunk */ #if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO) void /* PRIVATE */ png_write_sCAL(png_structp png_ptr, int unit, double width, double height) @@ -1647,8 +1653,8 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width, } buf[0] = (png_byte)unit; - png_memcpy(buf + 1, width, wlen + 1); /* append the '\0' here */ - png_memcpy(buf + wlen + 2, height, hlen); /* do NOT append the '\0' here */ + png_memcpy(buf + 1, width, wlen + 1); /* Append the '\0' here */ + png_memcpy(buf + wlen + 2, height, hlen); /* Do NOT append the '\0' here */ png_debug1(3, "sCAL total length = %u", (unsigned int)total_len); png_write_chunk(png_ptr, (png_bytep)png_sCAL, buf, total_len); @@ -1658,7 +1664,7 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width, #endif #if defined(PNG_WRITE_pHYs_SUPPORTED) -/* write the pHYs chunk */ +/* Write the pHYs chunk */ void /* PRIVATE */ png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, @@ -1713,24 +1719,24 @@ png_write_tIME(png_structp png_ptr, png_timep mod_time) } #endif -/* initializes the row writing capability of libpng */ +/* Initializes the row writing capability of libpng */ 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 */ + /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - /* start of interlace block */ + /* Start of interlace block */ int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - /* offset to next interlace block */ + /* Offset to next interlace block */ int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - /* start of interlace block in the y direction */ + /* Start of interlace block in the y direction */ int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - /* offset to next interlace block in the y direction */ + /* Offset to next interlace block in the y direction */ int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; #endif #endif @@ -1741,13 +1747,13 @@ png_write_start_row(png_structp png_ptr) buf_size = (png_size_t)(PNG_ROWBYTES( png_ptr->usr_channels*png_ptr->usr_bit_depth, png_ptr->width) + 1); - /* set up row buffer */ + /* Set up row buffer */ png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, (png_uint_32)buf_size); png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE; #ifndef PNG_NO_WRITE_FILTER - /* set up filtering buffer, if using this filter */ + /* Set up filtering buffer, if using this filter */ if (png_ptr->do_filter & PNG_FILTER_SUB) { png_ptr->sub_row = (png_bytep)png_malloc(png_ptr, @@ -1758,10 +1764,10 @@ 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, + /* 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); + png_memset(png_ptr->prev_row, 0, buf_size); if (png_ptr->do_filter & PNG_FILTER_UP) { @@ -1787,7 +1793,7 @@ png_write_start_row(png_structp png_ptr) #endif /* PNG_NO_WRITE_FILTER */ #ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* if interlaced, we need to set up width and height of pass */ + /* If interlaced, we need to set up width and height of pass */ if (png_ptr->interlaced) { if (!(png_ptr->transformations & PNG_INTERLACE)) @@ -1819,18 +1825,18 @@ 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 */ + /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - /* start of interlace block */ + /* Start of interlace block */ int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - /* offset to next interlace block */ + /* Offset to next interlace block */ int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - /* start of interlace block in the y direction */ + /* Start of interlace block in the y direction */ int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - /* offset to next interlace block in the y direction */ + /* Offset to next interlace block in the y direction */ int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; #endif #endif @@ -1838,15 +1844,15 @@ png_write_finish_row(png_structp png_ptr) int ret; png_debug(1, "in png_write_finish_row"); - /* next row */ + /* Next row */ png_ptr->row_number++; - /* see if we are done */ + /* See if we are done */ if (png_ptr->row_number < png_ptr->num_rows) return; #ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* if interlaced, go to next pass */ + /* If interlaced, go to next pass */ if (png_ptr->interlaced) { png_ptr->row_number = 0; @@ -1856,7 +1862,7 @@ png_write_finish_row(png_structp png_ptr) } else { - /* loop until we find a non-zero width or height pass */ + /* Loop until we find a non-zero width or height pass */ do { png_ptr->pass++; @@ -1876,7 +1882,7 @@ png_write_finish_row(png_structp png_ptr) } - /* reset the row above the image for the next pass */ + /* Reset the row above the image for the next pass */ if (png_ptr->pass < 7) { if (png_ptr->prev_row != NULL) @@ -1888,16 +1894,16 @@ png_write_finish_row(png_structp png_ptr) } #endif - /* if we get here, we've just written the last row, so we need + /* If we get here, we've just written the last row, so we need to flush the compressor */ do { - /* tell the compressor we are done */ + /* Tell the compressor we are done */ ret = deflate(&png_ptr->zstream, Z_FINISH); - /* check for an error */ + /* Check for an error */ if (ret == Z_OK) { - /* check to see if we need more room */ + /* Check to see if we need more room */ if (!(png_ptr->zstream.avail_out)) { png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size); @@ -1914,7 +1920,7 @@ png_write_finish_row(png_structp png_ptr) } } while (ret != Z_STREAM_END); - /* write any extra space */ + /* Write any extra space */ if (png_ptr->zstream.avail_out < png_ptr->zbuf_size) { png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size - @@ -1937,24 +1943,24 @@ 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 */ + /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - /* start of interlace block */ + /* Start of interlace block */ int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - /* offset to next interlace block */ + /* 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) */ + /* We don't have to do anything on the last pass (6) */ #if defined(PNG_USELESS_TESTS_SUPPORTED) if (row != NULL && row_info != NULL && pass < 6) #else if (pass < 6) #endif { - /* each pixel depth is handled separately */ + /* Each pixel depth is handled separately */ switch (row_info->pixel_depth) { case 1: @@ -2065,27 +2071,27 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass) png_uint_32 row_width = row_info->width; png_size_t pixel_bytes; - /* start at the beginning */ + /* Start at the beginning */ dp = row; - /* find out how many bytes each pixel takes up */ + /* Find out how many bytes each pixel takes up */ pixel_bytes = (row_info->pixel_depth >> 3); - /* loop through the row, only looking at the pixels that + /* Loop through the row, only looking at the pixels that matter */ for (i = png_pass_start[pass]; i < row_width; i += png_pass_inc[pass]) { - /* find out where the original pixel is */ + /* Find out where the original pixel is */ sp = row + (png_size_t)i * pixel_bytes; - /* move the pixel */ + /* Move the pixel */ if (dp != sp) png_memcpy(dp, sp, pixel_bytes); - /* next pixel */ + /* Next pixel */ dp += pixel_bytes; } break; } } - /* set new row width */ + /* Set new row width */ row_info->width = (row_info->width + png_pass_inc[pass] - 1 - png_pass_start[pass]) / @@ -2118,7 +2124,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info) #endif png_debug(1, "in png_write_find_filter"); - /* find out how many bytes offset each pixel is */ + /* Find out how many bytes offset each pixel is */ bpp = (row_info->pixel_depth + 7) >> 3; prev_row = png_ptr->prev_row; @@ -2205,9 +2211,9 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info) mins = sum; } - /* sub filter */ + /* Sub filter */ if (filter_to_do == PNG_FILTER_SUB) - /* it's the only filter so no testing is needed */ + /* It's the only filter so no testing is needed */ { png_bytep rp, lp, dp; png_uint_32 i; @@ -2322,7 +2328,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info) } } - /* up filter */ + /* Up filter */ if (filter_to_do == PNG_FILTER_UP) { png_bytep rp, dp, pp; @@ -2425,7 +2431,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info) } } - /* avg filter */ + /* Avg filter */ if (filter_to_do == PNG_FILTER_AVG) { png_bytep rp, dp, pp, lp; @@ -2728,18 +2734,18 @@ png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row) { png_debug(1, "in png_write_filtered_row"); png_debug1(2, "filter = %d", filtered_row[0]); - /* set up the zlib input buffer */ + /* Set up the zlib input buffer */ png_ptr->zstream.next_in = filtered_row; png_ptr->zstream.avail_in = (uInt)png_ptr->row_info.rowbytes + 1; - /* repeat until we have compressed all the data */ + /* Repeat until we have compressed all the data */ do { - int ret; /* return of zlib */ + int ret; /* Return of zlib */ - /* compress the data */ + /* Compress the data */ ret = deflate(&png_ptr->zstream, Z_NO_FLUSH); - /* check for compression errors */ + /* Check for compression errors */ if (ret != Z_OK) { if (png_ptr->zstream.msg != NULL) @@ -2748,18 +2754,18 @@ png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row) png_error(png_ptr, "zlib error"); } - /* see if it is time to write another IDAT */ + /* See if it is time to write another IDAT */ if (!(png_ptr->zstream.avail_out)) { - /* write the IDAT and reset the zlib output buffer */ + /* Write the IDAT and reset the zlib output buffer */ png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size); png_ptr->zstream.next_out = png_ptr->zbuf; png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; } - /* repeat until all data has been compressed */ + /* Repeat until all data has been compressed */ } while (png_ptr->zstream.avail_in); - /* swap the current and previous rows */ + /* Swap the current and previous rows */ if (png_ptr->prev_row != NULL) { png_bytep tptr; @@ -2769,7 +2775,7 @@ png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row) png_ptr->row_buf = tptr; } - /* finish row - updates counters and flushes zlib if last row */ + /* Finish row - updates counters and flushes zlib if last row */ png_write_finish_row(png_ptr); #if defined(PNG_WRITE_FLUSH_SUPPORTED) diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt index 6c735a9..21ee54d 100644 --- a/scripts/CMakeLists.txt +++ b/scripts/CMakeLists.txt @@ -1,12 +1,15 @@ - + project(PNG) # Copyright (C) 2007 Glenn Randers-Pehrson -# For conditions of distribution and use, see copyright notice in png.h + +# 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 2) -set(PNGLIB_RELEASE 35) +set(PNGLIB_RELEASE 38) set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR}) set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE}) @@ -169,7 +172,7 @@ configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in # SET UP LINKS set_target_properties(${PNG_LIB_NAME} PROPERTIES -# VERSION 0.${PNGLIB_RELEASE}.1.2.35 +# VERSION 0.${PNGLIB_RELEASE}.1.2.38 VERSION 0.${PNGLIB_RELEASE}.0 SOVERSION 0 CLEAN_DIRECT_OUTPUT 1) @@ -184,7 +187,6 @@ install_targets(/lib ${PNG_LIB_NAME}) if(PNG_STATIC) install_targets(/lib ${PNG_LIB_NAME_STATIC}) endif(PNG_STATIC) - install(FILES png.h pngconf.h DESTINATION include) install(FILES png.h pngconf.h DESTINATION include/${PNGLIB_NAME}) install(FILES libpng.3 libpngpf.3 DESTINATION man/man3) diff --git a/scripts/descrip.mms b/scripts/descrip.mms index 3584b0d..f3a8d7b 100644 --- a/scripts/descrip.mms +++ b/scripts/descrip.mms @@ -1,6 +1,6 @@ cc_defs = /inc=$(ZLIBSRC) -c_deb = +c_deb = .ifdef __DECC__ pref = /prefix=all @@ -29,7 +29,7 @@ test : pngtest.exe run pngtest clean : - delete *.obj;*,*.exe;* + delete *.obj;*,*.exe; # Other dependencies. @@ -44,9 +44,9 @@ pngerror.obj : png.h, pngconf.h pngmem.obj : png.h, pngconf.h pngrio.obj : png.h, pngconf.h pngwio.obj : png.h, pngconf.h -pngtest.obj : png.h, pngconf.h pngtrans.obj : png.h, pngconf.h pngwrite.obj : png.h, pngconf.h pngwtran.obj : png.h, pngconf.h pngwutil.obj : png.h, pngconf.h +pngtest.obj : png.h, pngconf.h diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in index ddbb482..6622f07 100755 --- a/scripts/libpng-config-head.in +++ b/scripts/libpng-config-head.in @@ -4,11 +4,14 @@ # provides configuration info for libpng. # Copyright (C) 2002 Glenn Randers-Pehrson -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Modeled after libxml-config. -version=1.2.35 +version=1.2.38 prefix="" libdir="" libs="" diff --git a/scripts/libpng-config.in b/scripts/libpng-config.in index 2f475be..7ae7d50 100755 --- a/scripts/libpng-config.in +++ b/scripts/libpng-config.in @@ -4,7 +4,10 @@ # provides configuration info for libpng. # Copyright (C) 2002, 2004, 2006, 2007 Glenn Randers-Pehrson -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Modeled after libxml-config. diff --git a/scripts/libpng.icc b/scripts/libpng.icc index f9c51af..6635963 100644 --- a/scripts/libpng.icc +++ b/scripts/libpng.icc @@ -1,13 +1,16 @@ // Project file for libpng (static) // IBM VisualAge/C++ version 4.0 or later // Copyright (C) 2000 Cosmin Truta -// For conditions of distribution and use, see copyright notice in png.h +// +// This code is released under the libpng license. +// For conditions of distribution and use, see the disclaimer +// and license in png.h +// // Notes: // All modules are compiled in C mode // Tested with IBM VAC++ 4.0 under Win32 // Expected to work with IBM VAC++ 4.0 or later under OS/2 and Win32 // Can be easily adapted for IBM VAC++ 4.0 or later under AIX -// For conditions of distribution and use, see copyright notice in png.h option incl(searchpath, "../zlib"), opt(level, "2"), link(libsearchpath, "../zlib") diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in index aed5874..eff567c 100644 --- a/scripts/libpng.pc.in +++ b/scripts/libpng.pc.in @@ -5,6 +5,6 @@ includedir=@includedir@/libpng12 Name: libpng Description: Loads and saves PNG files -Version: 1.2.35 +Version: 1.2.38 Libs: -L${libdir} -lpng12 Cflags: -I${includedir} diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu index f8ebb65..584ca33 100644 --- a/scripts/makefile.32sunu +++ b/scripts/makefile.32sunu @@ -3,12 +3,15 @@ # Copyright (C) 2002, 2006 Glenn Randers-Pehrson # Copyright (C) 1998 Greg Roelofs # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu index af15812..7f8694f 100644 --- a/scripts/makefile.64sunu +++ b/scripts/makefile.64sunu @@ -3,12 +3,15 @@ # Copyright (C) 2002, 2006 Glenn Randers-Pehrson # Copyright (C) 1998 Greg Roelofs # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: diff --git a/scripts/makefile.acorn b/scripts/makefile.acorn index 470cf89..a0e577b 100644 --- a/scripts/makefile.acorn +++ b/scripts/makefile.acorn @@ -6,11 +6,10 @@ CCflags = -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 -CMHGflags = +CMHGflags = LibFileflags = -c -l -o $@ Squeezeflags = -o $@ - # Final targets: @.libpng-lib: @.o.png @.o.pngerror @.o.pngrio @.o.pngwio @.o.pngmem \ @.o.pngpread @.o.pngset @.o.pngget @.o.pngread @.o.pngrtran \ diff --git a/scripts/makefile.aix b/scripts/makefile.aix index 96cfe6d..446c0ee 100644 --- a/scripts/makefile.aix +++ b/scripts/makefile.aix @@ -1,9 +1,12 @@ # makefile for libpng using gcc (generic, static library) -# Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson +# Copyright (C) 2002, 2006-2009 Glenn Randers-Pehrson # 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. -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Location of the zlib library and include files ZLIBINC = ../zlib @@ -20,7 +23,7 @@ LN_SF = ln -f -s LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) prefix=/usr/local @@ -54,7 +57,7 @@ A=.a E= # Variables -OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \ +OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \ pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \ pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O) @@ -94,20 +97,20 @@ install: $(LIBNAME)$(A) clean: $(RM_F) *.o $(LIBNAME)$(A) pngtest pngout.png -png$(O): png.h pngconf.h +png$(O): png.h pngconf.h pngerror$(O): png.h pngconf.h -pngget$(O): png.h pngconf.h -pngmem$(O): png.h pngconf.h +pngget$(O): png.h pngconf.h +pngmem$(O): png.h pngconf.h pngpread$(O): png.h pngconf.h -pngread$(O): png.h pngconf.h -pngrio$(O): png.h pngconf.h +pngread$(O): png.h pngconf.h +pngrio$(O): png.h pngconf.h pngrtran$(O): png.h pngconf.h pngrutil$(O): png.h pngconf.h -pngset$(O): png.h pngconf.h -pngtest$(O): png.h pngconf.h +pngset$(O): png.h pngconf.h pngtrans$(O): png.h pngconf.h -pngwio$(O): png.h pngconf.h +pngwio$(O): png.h pngconf.h pngwrite$(O): png.h pngconf.h pngwtran$(O): png.h pngconf.h pngwutil$(O): png.h pngconf.h +pngtest$(O): png.h pngconf.h diff --git a/scripts/makefile.amiga b/scripts/makefile.amiga index 79cb424..50977c7 100644 --- a/scripts/makefile.amiga +++ b/scripts/makefile.amiga @@ -1,7 +1,10 @@ # Commodore Amiga Makefile # makefile for libpng and SAS C V6.5x compiler # Copyright (C) 1995-2000 Wolf Faust -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # # Note: Use #define PNG_READ_BIG_ENDIAN_SUPPORTED in pngconf.h # diff --git a/scripts/makefile.atari b/scripts/makefile.atari index 9566d5d..944337d 100644 --- a/scripts/makefile.atari +++ b/scripts/makefile.atari @@ -1,8 +1,12 @@ # makefile for libpng # Copyright (C) 2002 Glenn Randers-Pehrson # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h -# modified for LC56/ATARI assumes libz.lib is in same dir and uses default + +# 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 diff --git a/scripts/makefile.bc32 b/scripts/makefile.bc32 index 04407dd..4b96231 100644 --- a/scripts/makefile.bc32 +++ b/scripts/makefile.bc32 @@ -11,7 +11,6 @@ ## Where zlib.h, zconf.h and zlib.lib are ZLIB_DIR=..\zlib - ## Compiler, linker and lib stuff CC=bcc32 LD=bcc32 @@ -49,7 +48,6 @@ CFLAGS=-I$(ZLIB_DIR) -O2 -d -k- -w $(TARGET_CPU) $(CDEBUG) # -M generate map file LDFLAGS=-L$(ZLIB_DIR) -M $(LDEBUG) - ## Variables OBJS = \ png.obj \ @@ -87,7 +85,6 @@ LIBOBJS = \ LIBNAME=libpng.lib - ## Implicit rules # Braces let make "batch" calls to the compiler, # 2 calls instead of 12; space is important. @@ -100,7 +97,6 @@ LIBNAME=libpng.lib .obj.exe: $(LD) $(LDFLAGS) $*.obj $(LIBNAME) zlib.lib $(NOEHLIB) - ## Major targets all: libpng pngtest @@ -111,25 +107,24 @@ pngtest: pngtest.exe test: pngtest.exe pngtest - ## Minor Targets -png.obj: png.c -pngerror.obj: pngerror.c -pngget.obj: pngget.c -pngmem.obj: pngmem.c -pngpread.obj: pngpread.c -pngread.obj: pngread.c -pngrio.obj: pngrio.c -pngrtran.obj: pngrtran.c -pngrutil.obj: pngrutil.c -pngset.obj: pngset.c -pngtrans.obj: pngtrans.c -pngwio.obj: pngwio.c -pngwrite.obj: pngwrite.c -pngwtran.obj: pngwtran.c -pngwutil.obj: pngwutil.c - +png.obj: png.c png.h pngconf.h +pngerror.obj: pngerror.c png.h pngconf.h +pngget.obj: pngget.c png.h pngconf.h +pngmem.obj: pngmem.c png.h pngconf.h +pngpread.obj: pngpread.c png.h pngconf.h +pngread.obj: pngread.c png.h pngconf.h +pngrio.obj: pngrio.c png.h pngconf.h +pngrtran.obj: pngrtran.c png.h pngconf.h +pngrutil.obj: pngrutil.c png.h pngconf.h +pngset.obj: pngset.c png.h pngconf.h +pngtrans.obj: pngtrans.c png.h pngconf.h +pngwio.obj: pngwio.c png.h pngconf.h +pngwrite.obj: pngwrite.c png.h pngconf.h +pngwtran.obj: pngwtran.c png.h pngconf.h +pngwutil.obj: pngwutil.c png.h pngconf.h +pngtest.obj: pngtest.c png.h pngconf.h $(LIBNAME): $(OBJS) -del $(LIBNAME) @@ -137,7 +132,6 @@ $(LIBNAME): $(OBJS) $(LIBOBJS), libpng | - # Cleanup clean: -del *.obj @@ -148,5 +142,4 @@ clean: -del *.tds -del pngout.png - # End of makefile for libpng diff --git a/scripts/makefile.beos b/scripts/makefile.beos index 44f887a..3a5fe61 100644 --- a/scripts/makefile.beos +++ b/scripts/makefile.beos @@ -3,12 +3,15 @@ # Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson # Copyright (C) 1999 Greg Roelofs # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: @@ -223,4 +226,5 @@ pngwrite.o pngwrite.pic.o: png.h pngconf.h pngwtran.o pngwtran.pic.o: png.h pngconf.h pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpread.o pngpread.pic.o: png.h pngconf.h + pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.bor b/scripts/makefile.bor index a5651aa..0a8ef00 100644 --- a/scripts/makefile.bor +++ b/scripts/makefile.bor @@ -12,7 +12,6 @@ ## Where zlib.h, zconf.h and zlib_MODEL.lib are ZLIB_DIR=..\zlib - ## Compiler, linker and lib stuff CC=bcc LD=bcc @@ -57,8 +56,8 @@ CFLAGS=-O2 -Z -X- -w -I$(ZLIB_DIR) -$(TARGET_CPU) $(MODEL_ARG) $(CDEBUG) # -M generate map file LDFLAGS=-M -L$(ZLIB_DIR) $(MODEL_ARG) $(LDEBUG) - ## Variables + OBJS = \ png.obj \ pngerror.obj \ @@ -95,8 +94,8 @@ LIBOBJS = \ LIBNAME=libpng$(MODEL).lib - ## Implicit rules + # Braces let make "batch" calls to the compiler, # 2 calls instead of 12; space is important. .c.obj: @@ -105,8 +104,8 @@ LIBNAME=libpng$(MODEL).lib .c.exe: $(CC) $(CFLAGS) $(LDFLAGS) $*.c $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB) - ## Major targets + all: libpng pngtest libpng: $(LIBNAME) @@ -116,25 +115,23 @@ pngtest: pngtest$(MODEL).exe test: pngtest$(MODEL).exe pngtest$(MODEL) - ## Minor Targets -png.obj: png.c -pngerror.obj: pngerror.c -pngget.obj: pngget.c -pngmem.obj: pngmem.c -pngpread.obj: pngpread.c -pngread.obj: pngread.c -pngrio.obj: pngrio.c -pngrtran.obj: pngrtran.c -pngrutil.obj: pngrutil.c -pngset.obj: pngset.c -pngtrans.obj: pngtrans.c -pngwio.obj: pngwio.c -pngwrite.obj: pngwrite.c -pngwtran.obj: pngwtran.c -pngwutil.obj: pngwutil.c - +png.obj: png.c png.h pngconf.h +pngerror.obj: pngerror.c png.h pngconf.h +pngget.obj: pngget.c png.h pngconf.h +pngmem.obj: pngmem.c png.h pngconf.h +pngpread.obj: pngpread.c png.h pngconf.h +pngread.obj: pngread.c png.h pngconf.h +pngrio.obj: pngrio.c png.h pngconf.h +pngrtran.obj: pngrtran.c png.h pngconf.h +pngrutil.obj: pngrutil.c png.h pngconf.h +pngset.obj: pngset.c png.h pngconf.h +pngtrans.obj: pngtrans.c png.h pngconf.h +pngwio.obj: pngwio.c png.h pngconf.h +pngwrite.obj: pngwrite.c png.h pngconf.h +pngwtran.obj: pngwtran.c png.h pngconf.h +pngwutil.obj: pngwutil.c png.h pngconf.h $(LIBNAME): $(OBJS) -del $(LIBNAME) @@ -142,14 +139,12 @@ $(LIBNAME): $(OBJS) $(LIBOBJS), libpng$(MODEL) | - pngtest$(MODEL).obj: pngtest.c $(CC) $(CFLAGS) -opngtest$(MODEL) -c pngtest.c pngtest$(MODEL).exe: pngtest$(MODEL).obj $(LD) $(LDFLAGS) pngtest$(MODEL).obj $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB) - # Clean up anything else you want clean: -del *.obj @@ -158,5 +153,4 @@ clean: -del *.lst -del *.map - # End of makefile for libpng diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin index d1444b0..813db4b 100644 --- a/scripts/makefile.cygwin +++ b/scripts/makefile.cygwin @@ -7,7 +7,10 @@ # 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 -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # This makefile intends to support building outside the src directory # if desired. When invoking it, specify an argument to SRCDIR on the @@ -74,7 +77,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \ LIBNAME = libpng12 PNGMAJ = 0 CYGDLL = 12 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) SHAREDLIB=cygpng$(CYGDLL).dll @@ -176,7 +179,7 @@ pngtest-stat$(EXE): pngtest.o $(STATLIB) pngtest.pic.o: pngtest.c $(CC) $(CFLAGS) -c $< -o $@ -pngtest.o: pngtest.c +pngtest.o: pngtest.c png.h pngconf.h $(CC) $(CFLAGS) -c $< -o $@ test: test-static test-shared diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin index e40a4fe..7e28127 100644 --- a/scripts/makefile.darwin +++ b/scripts/makefile.darwin @@ -4,7 +4,10 @@ # derived from makefile.linux: # Copyright (C) 1998, 1999 Greg Roelofs # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # where "make install" puts libpng.a, libpng12.dylib, png.h and pngconf.h prefix=/usr/local @@ -19,7 +22,7 @@ ZLIBINC=../zlib # Library name: LIBNAME = libpng12 PNGMAJ = 12 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: diff --git a/scripts/makefile.dec b/scripts/makefile.dec index 9f82061..ab42ebf 100644 --- a/scripts/makefile.dec +++ b/scripts/makefile.dec @@ -1,11 +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. -# For conditions of distribution and use, see copyright notice in png.h + +# 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 = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) LIBNAME = libpng12 @@ -205,10 +208,10 @@ pngget.o: png.h pngconf.h pngread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h pngpread.o: png.h pngconf.h +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.dj2 b/scripts/makefile.dj2 index 09045c2..28821a4 100644 --- a/scripts/makefile.dj2 +++ b/scripts/makefile.dj2 @@ -1,7 +1,10 @@ # DJGPP (DOS gcc) makefile for libpng -# Copyright (C) 2002 Glenn Randers-Pehrson +# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # where make install will put libpng.a and png.h #prefix=/usr/local @@ -47,9 +50,9 @@ pngread.o: png.h pngconf.h pngpread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.elf b/scripts/makefile.elf index 6da6af5..312b696 100644 --- a/scripts/makefile.elf +++ b/scripts/makefile.elf @@ -2,7 +2,10 @@ # Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs # and Glenn Randers-Pehrson # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Modified for Debian by Junichi Uekawa and Josselin Mouette # Major modifications are: @@ -13,7 +16,7 @@ # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: diff --git a/scripts/makefile.freebsd b/scripts/makefile.freebsd index 59f3644..d9df1ee 100644 --- a/scripts/makefile.freebsd +++ b/scripts/makefile.freebsd @@ -1,6 +1,9 @@ # makefile for libpng under FreeBSD -# Copyright (C) 2002, 2007 Glenn Randers-Pehrson and Andrey A. Chernov -# For conditions of distribution and use, see copyright notice in png.h +# 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 PREFIX?= /usr/local SHLIB_VER?= 5 diff --git a/scripts/makefile.gcc b/scripts/makefile.gcc index b2675a4..d1fb867 100644 --- a/scripts/makefile.gcc +++ b/scripts/makefile.gcc @@ -2,7 +2,10 @@ # Copyright (C) 2008 Glenn Randers-Pehrson # Copyright (C) 2000 Cosmin Truta # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Location of the zlib library and include files ZLIBINC = ../zlib @@ -31,9 +34,9 @@ A=.a EXE= # Variables -OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \ - pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \ - pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O) +OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \ + pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \ + pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O) # Targets all: static @@ -61,20 +64,20 @@ pngtest$(EXE): pngtest$(O) libpng$(A) clean: $(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png -png$(O): png.h pngconf.h +png$(O): png.h pngconf.h pngerror$(O): png.h pngconf.h -pngget$(O): png.h pngconf.h -pngmem$(O): png.h pngconf.h +pngget$(O): png.h pngconf.h +pngmem$(O): png.h pngconf.h pngpread$(O): png.h pngconf.h -pngread$(O): png.h pngconf.h -pngrio$(O): png.h pngconf.h +pngread$(O): png.h pngconf.h +pngrio$(O): png.h pngconf.h pngrtran$(O): png.h pngconf.h pngrutil$(O): png.h pngconf.h -pngset$(O): png.h pngconf.h -pngtest$(O): png.h pngconf.h +pngset$(O): png.h pngconf.h pngtrans$(O): png.h pngconf.h -pngwio$(O): png.h pngconf.h +pngwio$(O): png.h pngconf.h pngwrite$(O): png.h pngconf.h pngwtran$(O): png.h pngconf.h pngwutil$(O): png.h pngconf.h +pngtest$(O): png.h pngconf.h diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx index d357640..d733cbf 100644 --- a/scripts/makefile.gcmmx +++ b/scripts/makefile.gcmmx @@ -3,7 +3,10 @@ # Copyright 2002, 2006, 2008 Greg Roelofs and Glenn Randers-Pehrson # Copyright 1998-2001 Greg Roelofs # Copyright 1996-1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # CAUTION: Do not use this makefile with gcc versions 2.7.2.2 and earlier. @@ -14,7 +17,7 @@ # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: @@ -64,11 +67,11 @@ CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -W -Wall -O \ ### for gcc 2.95.2 on 686: #CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -W -Wall -O \ # -mcpu=i686 -malign-double -ffast-math -fstrict-aliasing \ -# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer +# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer ### for gcc 2.7.2.3 on 486 and up: #CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -W -Wall -O \ # -m486 -malign-double -ffast-math \ -# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer +# $(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm diff --git a/scripts/makefile.hp64 b/scripts/makefile.hp64 index 12ad829..13439b2 100644 --- a/scripts/makefile.hp64 +++ b/scripts/makefile.hp64 @@ -1,8 +1,11 @@ # makefile for libpng, HPUX (10.20 and 11.00) using the ANSI/C product. -# Copyright (C) 1999-2002 Glenn Randers-Pehrson +# 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 -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Where the zlib library and include files are located ZLIBLIB=/opt/zlib/lib @@ -18,7 +21,7 @@ ZLIBINC=/opt/zlib/include # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: @@ -227,9 +230,10 @@ pngget.o: png.h pngconf.h pngread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h pngpread.o: png.h pngconf.h + +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc index 247f6e4..0ef4b9f 100644 --- a/scripts/makefile.hpgcc +++ b/scripts/makefile.hpgcc @@ -3,12 +3,15 @@ # Copyright (C) 2001, Laurent faillie # Copyright (C) 1998, 1999 Greg Roelofs # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux index eaa97de..835c931 100644 --- a/scripts/makefile.hpux +++ b/scripts/makefile.hpux @@ -2,7 +2,10 @@ # 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 -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Where the zlib library and include files are located ZLIBLIB=/opt/zlib/lib @@ -18,7 +21,7 @@ ZLIBINC=/opt/zlib/include # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: @@ -224,9 +227,10 @@ pngget.o: png.h pngconf.h pngread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h pngpread.o: png.h pngconf.h + +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.ibmc b/scripts/makefile.ibmc index f09a62c..35d7f56 100644 --- a/scripts/makefile.ibmc +++ b/scripts/makefile.ibmc @@ -1,7 +1,12 @@ # Makefile for libpng (static) # IBM C version 3.x for Win32 and OS/2 +# Copyright (C) 2006 Glenn Randers-Pehrson # Copyright (C) 2000 Cosmin Truta -# For conditions of distribution and use, see copyright notice in png.h + +# 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 @@ -53,19 +58,20 @@ clean: $(RM) pngtest$(E) $(RM) pngout.png -png$(O): png.h pngconf.h +png$(O): png.h pngconf.h pngerror$(O): png.h pngconf.h -pngget$(O): png.h pngconf.h -pngmem$(O): png.h pngconf.h +pngget$(O): png.h pngconf.h +pngmem$(O): png.h pngconf.h pngpread$(O): png.h pngconf.h -pngread$(O): png.h pngconf.h -pngrio$(O): png.h pngconf.h +pngread$(O): png.h pngconf.h +pngrio$(O): png.h pngconf.h pngrtran$(O): png.h pngconf.h pngrutil$(O): png.h pngconf.h -pngset$(O): png.h pngconf.h -pngtest$(O): png.h pngconf.h +pngset$(O): png.h pngconf.h pngtrans$(O): png.h pngconf.h -pngwio$(O): png.h pngconf.h +pngwio$(O): png.h pngconf.h pngwrite$(O): png.h pngconf.h pngwtran$(O): png.h pngconf.h pngwutil$(O): png.h pngconf.h + +pngtest$(O): png.h pngconf.h diff --git a/scripts/makefile.intel b/scripts/makefile.intel index b0b523a..88a2957 100644 --- a/scripts/makefile.intel +++ b/scripts/makefile.intel @@ -1,12 +1,17 @@ # Makefile for libpng # Microsoft Visual C++ with Intel C/C++ Compiler 4.0 and later +# Copyright (C) 2006 Glenn Randers-Pehrson # Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is # copyright 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # To use, do "nmake /f scripts\makefile.intel" +# ------------------- Intel C/C++ Compiler 4.0 and later ------------------- # Where the zlib library and include files are located ZLIBLIB=..\zlib @@ -26,7 +31,6 @@ CALLING=r # __fastcall # -------------------------------------------------------------------------- - CC=icl -c CFLAGS=-O2 -G$(CPU)$(CALLING) -Qip -Qunroll4 -I$(ZLIBINC) -nologo LD=link @@ -73,9 +77,6 @@ pngrio$(O): png.h pngconf.h pngwio$(O): png.h pngconf.h $(CC) $(CFLAGS) $*.c $(ERRFILE) -pngtest$(O): png.h pngconf.h - $(CC) $(CFLAGS) $*.c $(ERRFILE) - pngtrans$(O): png.h pngconf.h $(CC) $(CFLAGS) $*.c $(ERRFILE) @@ -95,6 +96,9 @@ libpng.lib: $(OBJS) pngtest.exe: pngtest.obj libpng.lib $(LD) $(LDFLAGS) /OUT:pngtest.exe pngtest.obj libpng.lib $(ZLIBLIB)\zlib.lib +pngtest$(O): png.h pngconf.h + $(CC) $(CFLAGS) $*.c $(ERRFILE) + test: pngtest.exe pngtest.exe diff --git a/scripts/makefile.knr b/scripts/makefile.knr index 44ee538..7b46585 100644 --- a/scripts/makefile.knr +++ b/scripts/makefile.knr @@ -1,7 +1,10 @@ # makefile for libpng -# Copyright (C) 2002 Glenn Randers-Pehrson +# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# 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/ @@ -58,7 +61,7 @@ pngtest: pngtest.o libpng.a test: pngtest ./pngtest -install: libpng.a +install: libpng.a png.h pngconf.h -@mkdir $(DESTDIR)$(INCPATH) -@mkdir $(DESTDIR)$(INCPATH)/libpng -@mkdir $(DESTDIR)$(LIBPATH) @@ -92,8 +95,9 @@ pngread.o: png.h pngconf.h pngpread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h + +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.linux b/scripts/makefile.linux index 511666a..5128247 100644 --- a/scripts/makefile.linux +++ b/scripts/makefile.linux @@ -2,12 +2,15 @@ # Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs and # Glenn Randers-Pehrson # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: @@ -74,7 +77,7 @@ DI=$(DESTDIR)$(INCPATH) DL=$(DESTDIR)$(LIBPATH) DM=$(DESTDIR)$(MANPATH) -OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \ +OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \ pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \ pngwtran.o pngmem.o pngerror.o pngpread.o diff --git a/scripts/makefile.mingw b/scripts/makefile.mingw index 6713dfe..ce98a70 100644 --- a/scripts/makefile.mingw +++ b/scripts/makefile.mingw @@ -3,13 +3,16 @@ # of the library, and builds two copies of pngtest: one # statically linked and one dynamically linked. # -# Built from makefile.cygwin # Copyright (C) 2002, 2006, 2008 Soren Anderson, Charles Wilson, # 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 -# For conditions of distribution and use, see copyright notice in png.h +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h + +# Built from makefile.cygwin # This makefile intends to support building outside the src directory # if desired. When invoking it, specify an argument to SRCDIR on the @@ -74,7 +77,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \ LIBNAME = libpng12 PNGMAJ = 0 MINGDLL = 12 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) SHAREDLIB=libpng$(MINGDLL).dll @@ -284,6 +287,3 @@ pngwutil.o pngwutil.pic.o: png.h pngconf.h pngwutil.c pngpread.o pngpread.pic.o: png.h pngconf.h pngpread.c pngtest.o pngtest.pic.o: png.h pngconf.h pngtest.c - - - diff --git a/scripts/makefile.mips b/scripts/makefile.mips index f1a557d..0e7484f 100644 --- a/scripts/makefile.mips +++ b/scripts/makefile.mips @@ -1,7 +1,10 @@ # makefile for libpng # Copyright (C) Glenn Randers-Pehrson # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # where make install puts libpng.a and png.h prefix=/usr/local @@ -76,8 +79,9 @@ pngread.o: png.h pngconf.h pngpread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h + +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.msc b/scripts/makefile.msc index 1cbfd91..ab95ff8 100644 --- a/scripts/makefile.msc +++ b/scripts/makefile.msc @@ -1,6 +1,11 @@ # makefile for libpng # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h +# Copyright (C) 2006, 2009 Glenn Randers-Pehrson + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h + # Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib # -------- Microsoft C 5.1 and later, does not use assembler code -------- @@ -55,9 +60,6 @@ pngrio$(O): png.h pngconf.h pngwio$(O): png.h pngconf.h $(CC) -c $(CFLAGS) $*.c $(ERRFILE) -pngtest$(O): png.h pngconf.h - $(CC) -c $(CFLAGS) $*.c $(ERRFILE) - pngtrans$(O): png.h pngconf.h $(CC) -c $(CFLAGS) $*.c $(ERRFILE) @@ -76,6 +78,9 @@ libpng.lib: $(OBJS1) $(OBJS2) $(OBJS3) lib libpng $(OBJS2); lib libpng $(OBJS3); +pngtest$(O): png.h pngconf.h + $(CC) -c $(CFLAGS) $*.c $(ERRFILE) + pngtest.exe: pngtest.obj libpng.lib $(LD) $(LDFLAGS) pngtest.obj,,,libpng.lib ..\zlib\zlib.lib ; diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd index 60f2862..0247bb8 100644 --- a/scripts/makefile.ne12bsd +++ b/scripts/makefile.ne12bsd @@ -2,8 +2,11 @@ # make obj && make depend && make && make test # make includes && make install # Copyright (C) 2002 Patrick R.L. Welche -# Copyright (C) 2007 Glenn Randers-Pehrson -# For conditions of distribution and use, see copyright notice in png.h +# Copyright (C) 2007, 2009 Glenn Randers-Pehrson + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # You should also run makefile.netbsd @@ -14,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng12 LIB= png12 SHLIB_MAJOR= 0 -SHLIB_MINOR= 1.2.35 +SHLIB_MINOR= 1.2.38 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 @@ -23,7 +26,8 @@ MAN= libpng.3 libpngpf.3 png.5 CPPFLAGS+=-I${.CURDIR} -# something like this for mmx assembler, but it core dumps for me at the moment +# We should be able to do something like this instead of the manual +# uncommenting, but it core dumps for me at the moment: # .if ${MACHINE_ARCH} == "i386" # CPPFLAGS+=-DPNG_THREAD_UNSAFE_OK # MKLINT= no diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd index c513230..234f9a5 100644 --- a/scripts/makefile.netbsd +++ b/scripts/makefile.netbsd @@ -2,8 +2,11 @@ # make obj && make depend && make && make test # make includes && make install # Copyright (C) 2002 Patrick R.L. Welche -# Copyright (C) 2007 Glenn Randers-Pehrson -# For conditions of distribution and use, see copyright notice in png.h +# Copyright (C) 2007, 2009 Glenn Randers-Pehrson + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # You should also run makefile.ne0bsd @@ -14,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng LIB= png SHLIB_MAJOR= 3 -SHLIB_MINOR= 1.2.35 +SHLIB_MINOR= 1.2.38 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 @@ -23,7 +26,8 @@ MAN= libpng.3 libpngpf.3 png.5 CPPFLAGS+=-I${.CURDIR} -# something like this for mmx assembler, but it core dumps for me at the moment +# 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 # MKLINT= no diff --git a/scripts/makefile.nommx b/scripts/makefile.nommx index 093417f..4c1a75d 100644 --- a/scripts/makefile.nommx +++ b/scripts/makefile.nommx @@ -2,12 +2,15 @@ # Copyright (C) 1998, 1999, 2002, 2006-2008 Greg Roelofs and # Glenn Randers-Pehrson # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: @@ -233,20 +236,20 @@ writelock: # DO NOT DELETE THIS LINE -- make depend depends on it. -png.o png.pic.o: png.h pngconf.h -pngerror.o pngerror.pic.o: png.h pngconf.h -pngrio.o pngrio.pic.o: png.h pngconf.h -pngwio.o pngwio.pic.o: png.h pngconf.h -pngmem.o pngmem.pic.o: png.h pngconf.h -pngset.o pngset.pic.o: png.h pngconf.h -pngget.o pngget.pic.o: png.h pngconf.h -pngread.o pngread.pic.o: png.h pngconf.h -pngrtran.o pngrtran.pic.o: png.h pngconf.h -pngrutil.o pngrutil.pic.o: png.h pngconf.h -pngtrans.o pngtrans.pic.o: png.h pngconf.h -pngwrite.o pngwrite.pic.o: png.h pngconf.h -pngwtran.o pngwtran.pic.o: png.h pngconf.h -pngwutil.o pngwutil.pic.o: png.h pngconf.h -pngpread.o pngpread.pic.o: png.h pngconf.h - -pngtest.o: png.h pngconf.h +png.o png.pic.o: png.h pngconf.h png.c +pngerror.o pngerror.pic.o: png.h pngconf.h pngerror.c +pngrio.o pngrio.pic.o: png.h pngconf.h pngrio.c +pngwio.o pngwio.pic.o: png.h pngconf.h pngwio.c +pngmem.o pngmem.pic.o: png.h pngconf.h pngmem.c +pngset.o pngset.pic.o: png.h pngconf.h pngset.c +pngget.o pngget.pic.o: png.h pngconf.h pngget.c +pngread.o pngread.pic.o: png.h pngconf.h pngread.c +pngrtran.o pngrtran.pic.o: png.h pngconf.h pngrtran.c +pngrutil.o pngrutil.pic.o: png.h pngconf.h pngrutil.c +pngtrans.o pngtrans.pic.o: png.h pngconf.h pngtrans.c +pngwrite.o pngwrite.pic.o: png.h pngconf.h pngwrite.c +pngwtran.o pngwtran.pic.o: png.h pngconf.h pngwtran.c +pngwutil.o pngwutil.pic.o: png.h pngconf.h pngwutil.c +pngpread.o pngpread.pic.o: png.h pngconf.h pngpread.c + +pngtest.o: png.h pngconf.h pngtest.c diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd index 9d31aba..2cf4c48 100644 --- a/scripts/makefile.openbsd +++ b/scripts/makefile.openbsd @@ -1,14 +1,17 @@ # makefile for libpng # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. # Copyright (C) 2007-2008 Glenn Randers-Pehrson -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h PREFIX?= /usr/local LIBDIR= ${PREFIX}/lib MANDIR= ${PREFIX}/man/cat SHLIB_MAJOR= 0 -SHLIB_MINOR= 1.2.35 +SHLIB_MINOR= 1.2.38 LIB= png SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \ @@ -18,7 +21,7 @@ SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \ HDRS= png.h pngconf.h CFLAGS+= -W -Wall -CPPFLAGS+= -I${.CURDIR} -DPNG_NO_MMX_CODE +CPPFLAGS+= -I${.CURDIR} -DPNG_NO_MMX_CODE NOPROFILE= Yes diff --git a/scripts/makefile.os2 b/scripts/makefile.os2 index 92cfcee..2df76ad 100644 --- a/scripts/makefile.os2 +++ b/scripts/makefile.os2 @@ -1,5 +1,8 @@ # makefile for libpng on OS/2 with gcc -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Related files: pngos2.def diff --git a/scripts/makefile.sco b/scripts/makefile.sco index e978971..6757e93 100644 --- a/scripts/makefile.sco +++ b/scripts/makefile.sco @@ -4,12 +4,15 @@ # Copyright (C) 2002, 2006 Glenn Randers-Pehrson # Copyright (C) 1998 Greg Roelofs # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc index 742e4ef..f04ed90 100644 --- a/scripts/makefile.sggcc +++ b/scripts/makefile.sggcc @@ -1,12 +1,15 @@ # makefile for libpng.a and libpng12.so, SGI IRIX with 'cc' # Copyright (C) 2001-2002, 2006 Glenn Randers-Pehrson # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: @@ -212,10 +215,8 @@ test-installed: ./pngtesti pngtest.png clean: - $(RM_F) libpng.a pngtest pngtesti pngout.png libpng.pc libpng-config \ - $(LIBSO) $(LIBSOMAJ)* \ - $(OLDSOVER) \ - so_locations + $(RM_F) libpng.a pngtest pngtesti pngout.png libpng.pc \ + so_locations libpng-config $(LIBSO) $(LIBSOMAJ)* $(OLDSOVER) DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO writelock: @@ -233,10 +234,10 @@ pngget.o: png.h pngconf.h pngread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h pngpread.o: png.h pngconf.h +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi index c4b429b..d5909e5 100644 --- a/scripts/makefile.sgi +++ b/scripts/makefile.sgi @@ -1,12 +1,15 @@ # makefile for libpng.a and libpng12.so, SGI IRIX with 'cc' # Copyright (C) 2001-2002, 2006, 2007 Glenn Randers-Pehrson # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME=libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: @@ -236,10 +239,10 @@ pngget.o: png.h pngconf.h pngread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h pngpread.o: png.h pngconf.h +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.so9 b/scripts/makefile.so9 index 7424414..e1a44f4 100644 --- a/scripts/makefile.so9 +++ b/scripts/makefile.so9 @@ -4,11 +4,14 @@ # Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson # Copyright (C) 1998-2001 Greg Roelofs # Copyright (C) 1996-1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# 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 = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) LIBNAME = libpng12 diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris index e796f1a..c762024 100644 --- a/scripts/makefile.solaris +++ b/scripts/makefile.solaris @@ -3,12 +3,15 @@ # Contributed by William L. Sebok, based on makefile.linux # Copyright (C) 1998 Greg Roelofs # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: @@ -43,8 +46,7 @@ ZLIBINC=/usr/local/include WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \ -Wmissing-declarations -Wtraditional -Wcast-align \ -Wstrict-prototypes -Wmissing-prototypes #-Wconversion -CFLAGS=-I$(ZLIBINC) -W -Wall -O \ - -DPNG_NO_MMX_CODE; \ +CFLAGS=-I$(ZLIBINC) -W -Wall -O -DPNG_NO_MMX_CODE; \ # $(WARNMORE) -g -DPNG_DEBUG=5 LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm diff --git a/scripts/makefile.solaris-x86 b/scripts/makefile.solaris-x86 index 338d49d..95342b8 100644 --- a/scripts/makefile.solaris-x86 +++ b/scripts/makefile.solaris-x86 @@ -3,12 +3,15 @@ # Contributed by William L. Sebok, based on makefile.linux # Copyright (C) 1998 Greg Roelofs # Copyright (C) 1996, 1997 Andreas Dilger -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # Library name: LIBNAME = libpng12 PNGMAJ = 0 -PNGMIN = 1.2.35 +PNGMIN = 1.2.38 PNGVER = $(PNGMAJ).$(PNGMIN) # Shared library names: diff --git a/scripts/makefile.std b/scripts/makefile.std index 9b1925d..bb5268a 100644 --- a/scripts/makefile.std +++ b/scripts/makefile.std @@ -1,7 +1,10 @@ # makefile for libpng # Copyright (C) 2002, 2006 Glenn Randers-Pehrson # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # where make install puts libpng.a and png.h prefix=/usr/local @@ -83,10 +86,10 @@ pngget.o: png.h pngconf.h pngread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h pngpread.o: png.h pngconf.h +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.sunos b/scripts/makefile.sunos index ff19591..31dff77 100644 --- a/scripts/makefile.sunos +++ b/scripts/makefile.sunos @@ -1,7 +1,10 @@ # makefile for libpng # Copyright (C) 2002, 2006 Glenn Randers-Pehrson # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h # where make install puts libpng.a and png.h prefix=/usr/local @@ -88,10 +91,10 @@ pngget.o: png.h pngconf.h pngread.o: png.h pngconf.h pngrtran.o: png.h pngconf.h pngrutil.o: png.h pngconf.h -pngtest.o: png.h pngconf.h pngtrans.o: png.h pngconf.h pngwrite.o: png.h pngconf.h pngwtran.o: png.h pngconf.h pngwutil.o: png.h pngconf.h pngpread.o: png.h pngconf.h +pngtest.o: png.h pngconf.h diff --git a/scripts/makefile.vcawin32 b/scripts/makefile.vcawin32 index 99f5430..0b89d84 100644 --- a/scripts/makefile.vcawin32 +++ b/scripts/makefile.vcawin32 @@ -1,17 +1,22 @@ # makefile for libpng +# Copyright (C) 2006,2009 Glenn Randers-Pehrson # Copyright (C) 1998 Tim Wegner -# For conditions of distribution and use, see copyright notice in png.h + +# 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" -# -------- Microsoft Visual C++ 5.0 and later, uses assembler code -------- +# -------- Microsoft Visual C++ 2.0 and later, no assembler code -------- # If you don't want to use assembler (MMX) code, use makefile.vcwin32 instead. # Compiler, linker, librarian, and other tools CC = cl LD = link AR = lib -CFLAGS = -DPNG_USE_PNGVCRD -nologo -MD -O2 -W3 -I..\zlib +CFLAGS = -nologo -DPNG_USE_PNGVCRD -MD -O2 -W3 -I..\zlib LDFLAGS = -nologo ARFLAGS = -nologo RM = del @@ -64,9 +69,6 @@ pngrio$(O): png.h pngconf.h pngwio$(O): png.h pngconf.h $(CC) -c $(CFLAGS) $*.c $(ERRFILE) -pngtest$(O): png.h pngconf.h - $(CC) -c $(CFLAGS) $*.c $(ERRFILE) - pngtrans$(O): png.h pngconf.h $(CC) -c $(CFLAGS) $*.c $(ERRFILE) @@ -83,6 +85,9 @@ libpng.lib: $(OBJS) -$(RM) $@ $(AR) $(ARFLAGS) -out:$@ $(OBJS) $(ERRFILE) +pngtest$(O): png.h pngconf.h + $(CC) -c $(CFLAGS) $*.c $(ERRFILE) + pngtest.exe: pngtest$(O) libpng.lib $(LD) $(LDFLAGS) -out:$@ pngtest$(O) libpng.lib ..\zlib\zlib.lib $(ERRFILE) diff --git a/scripts/makefile.vcwin32 b/scripts/makefile.vcwin32 index fc6ece6..8cd806a 100644 --- a/scripts/makefile.vcwin32 +++ b/scripts/makefile.vcwin32 @@ -1,6 +1,11 @@ # makefile for libpng # Copyright (C) 1998 Tim Wegner -# For conditions of distribution and use, see copyright notice in png.h +# Copyright (C) 2006,2009 Glenn Randers-Pehrson + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h + # Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib # To use, do "nmake /f scripts\makefile.vcwin32" @@ -64,9 +69,6 @@ pngrio$(O): png.h pngconf.h pngwio$(O): png.h pngconf.h $(CC) -c $(CFLAGS) $*.c $(ERRFILE) -pngtest$(O): png.h pngconf.h - $(CC) -c $(CFLAGS) $*.c $(ERRFILE) - pngtrans$(O): png.h pngconf.h $(CC) -c $(CFLAGS) $*.c $(ERRFILE) @@ -83,6 +85,9 @@ libpng.lib: $(OBJS) -$(RM) $@ $(AR) $(ARFLAGS) -out:$@ $(OBJS) $(ERRFILE) +pngtest$(O): png.h pngconf.h + $(CC) -c $(CFLAGS) $*.c $(ERRFILE) + pngtest.exe: pngtest$(O) libpng.lib $(LD) $(LDFLAGS) -out:$@ pngtest$(O) libpng.lib ..\zlib\zlib.lib $(ERRFILE) diff --git a/scripts/makefile.watcom b/scripts/makefile.watcom index 5e860fc..bbfeeeb 100644 --- a/scripts/makefile.watcom +++ b/scripts/makefile.watcom @@ -3,7 +3,10 @@ # Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is # copyright 1995 Guy Eric Schalnat, Group 42, Inc. -# For conditions of distribution and use, see copyright notice in png.h + +# 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 "wmake /f scripts\makefile.watcom" diff --git a/scripts/makevms.com b/scripts/makevms.com index b9e3895..36d1190 100644 --- a/scripts/makevms.com +++ b/scripts/makevms.com @@ -55,8 +55,6 @@ $ then $ dele pngtest.obj;* $ CALL MAKE png.OBJ "cc ''CCOPT' png" - png.c png.h pngconf.h -$ CALL MAKE pngpread.OBJ "cc ''CCOPT' pngpread" - - pngpread.c png.h pngconf.h $ CALL MAKE pngset.OBJ "cc ''CCOPT' pngset" - pngset.c png.h pngconf.h $ CALL MAKE pngget.OBJ "cc ''CCOPT' pngget" - @@ -64,7 +62,7 @@ $ CALL MAKE pngget.OBJ "cc ''CCOPT' pngget" - $ CALL MAKE pngread.OBJ "cc ''CCOPT' pngread" - pngread.c png.h pngconf.h $ CALL MAKE pngpread.OBJ "cc ''CCOPT' pngpread" - - pngpread.c png.h pngconf.h + pngpread.c png.h pngconf.h $ CALL MAKE pngrtran.OBJ "cc ''CCOPT' pngrtran" - pngrtran.c png.h pngconf.h $ CALL MAKE pngrutil.OBJ "cc ''CCOPT' pngrutil" - diff --git a/scripts/pngos2.def b/scripts/pngos2.def index edaf05f..8c7ff1f 100644 --- a/scripts/pngos2.def +++ b/scripts/pngos2.def @@ -2,7 +2,7 @@ ; PNG.LIB module definition file for OS/2 ;---------------------------------------- -; Version 1.2.35 +; Version 1.2.38 LIBRARY PNG DESCRIPTION "PNG image compression library for OS/2" diff --git a/scripts/pngw32.def b/scripts/pngw32.def index 9ce191c..8fe6db4 100644 --- a/scripts/pngw32.def +++ b/scripts/pngw32.def @@ -5,7 +5,7 @@ LIBRARY EXPORTS -;Version 1.2.35 +;Version 1.2.38 png_build_grayscale_palette @1 png_check_sig @2 png_chunk_error @3 @@ -189,6 +189,7 @@ EXPORTS ; Added at version 1.0.12 ; For compatibility with 1.0.7-1.0.11 ; png_info_init @174 +; png_read_init_3, png_info_init_3, and png_write_init_3 are deprecated. png_read_init_3 @175 png_write_init_3 @176 png_info_init_3 @177 diff --git a/scripts/smakefile.ppc b/scripts/smakefile.ppc index e5c0278..91df6c1 100644 --- a/scripts/smakefile.ppc +++ b/scripts/smakefile.ppc @@ -1,7 +1,10 @@ # Amiga powerUP (TM) Makefile # makefile for libpng and SAS C V6.58/7.00 PPC compiler # Copyright (C) 1998 by Andreas R. Kleinert -# For conditions of distribution and use, see copyright notice in png.h + +# This code is released under the libpng license. +# For conditions of distribution and use, see the disclaimer +# and license in png.h CC = scppc CFLAGS = NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL IDIR /zlib \ |