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Bug 544747 - Update libpng to version 1.4.1. r=joe

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This commit is contained in:
Glenn Randers-Pehrson 2010-03-09 13:22:44 -05:00
parent ef09b590f8
commit ae934ea79f
22 changed files with 912 additions and 534 deletions
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76
modules/libimg/png/CHANGES
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@ -2458,6 +2458,82 @@ version 1.4.0rc08 [January 2, 2010]
version 1.4.0 [January 3, 2010]
No changes.
version 1.4.1beta01 [January 8, 2010]
Updated CMakeLists.txt for consistent indentation and to avoid an
unclosed if-statement warning (Philip Lowman).
Revised Makefile.am and Makefile.in to remove references to Y2KINFO,
KNOWNBUG, and libpng.la (Robert Schwebel).
Revised the makefiles to install the same files and symbolic
links as configure, except for libpng.la and libpng14.la.
Make png_set|get_compression_buffer_size() available even when
PNG_WRITE_SUPPORTED is not enabled.
Revised Makefile.am and Makefile.in to simplify their maintenance.
Revised scripts/makefile.linux to install a link to libpng14.so.14.1
version 1.4.1beta02 [January 9, 2010]
Revised the rest of the makefiles to install a link to libpng14.so.14.1
version 1.4.1beta03 [January 10, 2010]
Removed png_set_premultiply_alpha() from scripts/*.def
version 1.4.1rc01 [January 16, 2010]
No changes.
version 1.4.1beta04 [January 23, 2010]
Revised png_decompress_chunk() to improve speed and memory usage when
decoding large chunks.
Added png_set|get_chunk_malloc_max() functions.
version 1.4.1beta05 [January 26, 2010]
Relocated "int k" declaration in pngtest.c to minimize its scope.
version 1.4.1beta06 [January 28, 2010]
Revised png_decompress_chunk() to use a two-pass method suggested by
John Bowler.
version 1.4.1beta07 [February 6, 2010]
Folded some long lines in the source files.
Added defineable PNG_USER_CHUNK_CACHE_MAX, PNG_USER_CHUNK_MALLOC_MAX,
and a PNG_USER_LIMITS_SUPPORTED flag.
Eliminated use of png_ptr->irowbytes and reused the slot in png_ptr as
png_ptr->png_user_chunk_malloc_max.
Revised png_push_save_buffer() to do fewer but larger png_malloc() calls.
version 1.4.1beta08 [February 6, 2010]
Minor cleanup and updating of dates and copyright year.
version 1.4.1beta09 [February 7, 2010]
Reverted to original png_push_save_buffer() code.
version 1.4.1beta10 [February 9, 2010]
Return allocated "old_buffer" in png_push_save_buffer() before calling
png_error(), to avoid a potential memory leak.
version 1.4.1beta11 [February 12, 2010]
Relocated misplaced closing curley bracket in png_decompress_chunk().
Removed unused "buffer_size" variable from png_decompress_chunk().
Removed the cbuilder5 project, which has not been updated to 1.4.0.
Complete rewrite of two-pass png_decompress_chunk() by John Bowler.
version 1.4.1beta12 [February 14, 2010]
Fixed type declaration of png_get_user_malloc_max() in pngget.c (Daisuke
Nishikawa)
version 1.4.1rc02 [January 18, 2010]
No changes.
version 1.4.1rc03 [February 19, 2010]
Noted in scripts/makefile.mingw that it expects to be run under MSYS.
Removed obsolete unused MMX-querying support from contrib/gregbook
Removed the AIX redefinition of jmpbuf in png.h
Define _ALL_SOURCE in configure.ac, makefile.aix, and CMakeLists.txt
when using AIX compiler.
version 1.4.1rc04 [February 19, 2010]
Removed unused gzio.c from contrib/pngminim gather and makefile scripts
version 1.4.1 [February 25, 2010]
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement

4
modules/libimg/png/LICENSE
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@ -10,7 +10,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.4.0, January 3, 2010, are
libpng versions 1.2.6, August 15, 2004, through 1.4.1, February 25, 2010, are
Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
January 3, 2010
February 25, 2010

2
modules/libimg/png/MOZCHANGES
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@ -1,6 +1,8 @@
Changes made to pristine png source by mozilla.org developers.
2010/02/26 -- Synced with libpng-1.4.1 (bug #544747).
2010/01/04 -- Synced with libpng-1.4.0 (bug #532645).
2009/09/10 -- Synced with libpng-1.2.40 (bug #492200 and #504805).

12
modules/libimg/png/README
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@ -1,4 +1,4 @@
README for libpng version 1.4.0 - January 3, 2010 (shared library 14.0)
README for libpng version 1.4.1 - February 25, 2010 (shared library 14.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.
@ -185,9 +185,9 @@ Files in this distribution:
makefile.std => Generic UNIX makefile (cc, creates static
libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng14.so.14.1.4.0)
gcc, creates libpng14.so.14.1.4.1)
makefile.linux => Linux/ELF makefile
(gcc, creates libpng14.so.14.1.4.0)
(gcc, creates libpng14.so.14.1.4.1)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
@ -209,12 +209,12 @@ Files in this distribution:
makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics
(gcc, creates libpng14.so.14.1.4.0)
(gcc, creates libpng14.so.14.1.4.1)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng14.so.14.1.4.0)
(gcc, creates libpng14.so.14.1.4.1)
makefile.so9 => Solaris 9 makefile
(gcc, creates libpng14.so.14.1.4.0)
(gcc, creates libpng14.so.14.1.4.1)
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

35
modules/libimg/png/libpng.txt
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@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
libpng version 1.4.0 - January 3, 2010
libpng version 1.4.1 - February 25, 2010
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -11,7 +11,7 @@ libpng.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.4.0 - January 3, 2010
libpng versions 0.97, January 1998, through 1.4.1 - February 25, 2010
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -260,6 +260,15 @@ libpng know that there are some bytes missing from the start of the file.
png_set_sig_bytes(png_ptr, number);
You can change the zlib compression buffer size to be used while
reading compressed data with
png_set_compression_buffer_size(png_ptr, buffer_size);
where the default size is 8192 bytes. Note that the buffer size
is changed immediately and the buffer is reallocated immediately,
instead of setting a flag to be acted upon later.
Setting up callback code
You can set up a callback function to handle any unknown chunks in the
@ -423,6 +432,18 @@ where 0x7fffffffL means unlimited. You can retrieve this limit with
This limit also applies to the number of buffers that can be allocated
by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks.
You can also set a limit on the amount of memory that a compressed chunk
other than IDAT can occupy, with
png_set_chunk_malloc_max(png_ptr, user_chunk_malloc_max);
and you can retrieve the limit with
chunk_malloc_max = png_get_chunk_malloc_max(png_ptr);
Any chunks that would cause either of these limits to be exceeded will
be ignored.
The high-level read interface
At this point there are two ways to proceed; through the high-level
@ -878,7 +899,7 @@ things.
As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
added. It expands the sample depth without changing tRNS to alpha.
As of libpng version 1.4.0, not all possible expansions are supported.
As of libpng version 1.4.1, not all possible expansions are supported.
In the following table, the 01 means grayscale with depth<8, 31 means
indexed with depth<8, other numerals represent the color type, "T" means
@ -2479,7 +2500,7 @@ via
Your replacement memory functions must have prototypes as follows:
png_voidp malloc_fn(png_structp png_ptr,
png_size_t size);
png_alloc_size_t size);
void free_fn(png_structp png_ptr, png_voidp ptr);
Your malloc_fn() must return NULL in case of failure. The png_malloc()
@ -3063,6 +3084,8 @@ We changed the prototype for png_malloc() from
to
png_malloc(png_structp png_ptr, png_alloc_size_t size)
This also applies to the prototype for the user replacement malloc_fn().
The png_calloc() function was added and is used in place of
of "png_malloc(); png_memset();" except in the case in png_read_png()
where the array consists of pointers; in this case a "for" loop is used
@ -3222,13 +3245,13 @@ Other rules can be inferred by inspecting the libpng source.
XIII. Y2K Compliance in libpng
January 3, 2010
February 25, 2010
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 1.4.0 are Y2K compliant. It is my belief that earlier
upward through 1.4.1 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

5
modules/libimg/png/mozpngconf.h
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@ -38,11 +38,15 @@
#ifndef MOZPNGCONF_H
#define MOZPNGCONF_H
#define PNG_USER_CHUNK_MALLOC_MAX 4000000L
#define PNG_NO_GLOBAL_ARRAYS
#ifndef MOZ_PNG_READ
#define PNG_NO_READ_SUPPORTED
#endif
#define PNG_NO_SET_USER_LIMITS
#define PNG_NO_USER_LIMITS
#define PNG_NO_ASSEMBLER_CODE
#define PNG_NO_WARN_UNINITIALIZED_ROW
#define PNG_NO_READ_BACKGROUND
@ -112,6 +116,7 @@
#define PNG_NO_WRITE_INTERLACING_SUPPORTED /* effective libpng-1.3.0 */
#endif
#define PNG_NO_HANDLE_AS_UNKNOWN
#define PNG_NO_INFO_IMAGE
#define PNG_NO_USER_MEM
#define PNG_NO_FIXED_POINT_SUPPORTED

8
modules/libimg/png/png.c
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -17,7 +17,7 @@
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_4_0 Your_png_h_is_not_version_1_4_0;
typedef version_1_4_1 Your_png_h_is_not_version_1_4_1;
/* Version information for C files. This had better match the version
* string defined in png.h.
@ -551,13 +551,13 @@ png_get_copyright(png_structp png_ptr)
#else
#ifdef __STDC__
return ((png_charp) PNG_STRING_NEWLINE \
"libpng version 1.4.0 - January 3, 2010" PNG_STRING_NEWLINE \
"libpng version 1.4.1 - February 25, 2010" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2010 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE);
#else
return ((png_charp) "libpng version 1.4.0 - January 3, 2010\
return ((png_charp) "libpng version 1.4.1 - February 25, 2010\
Copyright (c) 1998-2010 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");

444
modules/libimg/png/png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.4.0 - January 3, 2010
* libpng version 1.4.1 - February 25, 2010
* Copyright (c) 1998-2010 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.)
@ -11,7 +11,7 @@
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.4.0 - January 3, 2010: Glenn
* libpng versions 0.97, January 1998, through 1.4.1 - February 25, 2010: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@ -134,6 +134,11 @@
* 1.4.0beta88-109 14 10400 14.so.14.0[.0]
* 1.4.0rc02-08 14 10400 14.so.14.0[.0]
* 1.4.0 14 10400 14.so.14.0[.0]
* 1.4.1beta01-03 14 10401 14.so.14.1[.0]
* 1.4.1rc01 14 10401 14.so.14.1[.0]
* 1.4.1beta04-12 14 10401 14.so.14.1[.0]
* 1.4.1rc02-04 14 10401 14.so.14.1[.0]
* 1.4.1 14 10401 14.so.14.1[.0]
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
@ -165,7 +170,7 @@
*
* This code is released under the libpng license.
*
* libpng versions 1.2.6, August 15, 2004, through 1.4.0, January 3, 2010, are
* libpng versions 1.2.6, August 15, 2004, through 1.4.1, February 25, 2010, are
* Copyright (c) 2004, 2006-2010 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:
@ -277,13 +282,13 @@
* Y2K compliance in libpng:
* =========================
*
* January 3, 2010
* February 25, 2010
*
* 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 1.4.0 are Y2K compliant. It is my belief that earlier
* upward through 1.4.1 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
@ -339,9 +344,9 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.4.0"
#define PNG_LIBPNG_VER_STRING "1.4.1"
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.4.0 - January 3, 2010\n"
" libpng version 1.4.1 - February 25, 2010\n"
#define PNG_LIBPNG_VER_SONUM 14
#define PNG_LIBPNG_VER_DLLNUM 14
@ -349,7 +354,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 4
#define PNG_LIBPNG_VER_RELEASE 0
#define PNG_LIBPNG_VER_RELEASE 1
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero:
*/
@ -379,17 +384,13 @@
* 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 10400 /* 1.4.0 */
#define PNG_LIBPNG_VER 10401 /* 1.4.1 */
#ifndef PNG_VERSION_INFO_ONLY
/* Include the compression library's header */
#include "zlib.h"
#endif
#ifdef AIX
#define jmpbuf __jmpbuf
#endif
/* Include all user configurable info, including optional assembler routines */
#include "pngconf.h"
@ -629,25 +630,38 @@ typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp;
typedef struct png_info_struct
{
/* the following are necessary for every PNG file */
png_uint_32 width PNG_DEPSTRUCT; /* width of image in pixels (from IHDR) */
png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels (from IHDR) */
png_uint_32 valid PNG_DEPSTRUCT; /* valid chunk data (see PNG_INFO_ below) */
png_size_t rowbytes PNG_DEPSTRUCT; /* bytes needed to hold an untransformed row */
png_colorp palette PNG_DEPSTRUCT; /* array of color values (valid & PNG_INFO_PLTE) */
png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in "palette" (PLTE) */
png_uint_16 num_trans PNG_DEPSTRUCT; /* number of transparent palette color (tRNS) */
png_byte bit_depth PNG_DEPSTRUCT; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
png_byte color_type PNG_DEPSTRUCT; /* see PNG_COLOR_TYPE_ below (from IHDR) */
png_uint_32 width PNG_DEPSTRUCT; /* width of image in pixels (from IHDR) */
png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels (from IHDR) */
png_uint_32 valid PNG_DEPSTRUCT; /* valid chunk data (see PNG_INFO_
below) */
png_size_t rowbytes PNG_DEPSTRUCT; /* bytes needed to hold an untransformed
row */
png_colorp palette PNG_DEPSTRUCT; /* array of color values
(valid & PNG_INFO_PLTE) */
png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in
"palette" (PLTE) */
png_uint_16 num_trans PNG_DEPSTRUCT; /* number of transparent palette
color (tRNS) */
png_byte bit_depth PNG_DEPSTRUCT; /* 1, 2, 4, 8, or 16 bits/channel
(from IHDR) */
png_byte color_type PNG_DEPSTRUCT; /* see PNG_COLOR_TYPE_ below
(from IHDR) */
/* The following three should have been named *_method not *_type */
png_byte compression_type PNG_DEPSTRUCT; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
png_byte filter_type PNG_DEPSTRUCT; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
png_byte interlace_type PNG_DEPSTRUCT; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
png_byte compression_type PNG_DEPSTRUCT; /* must be
PNG_COMPRESSION_TYPE_BASE (IHDR) */
png_byte filter_type PNG_DEPSTRUCT; /* must be PNG_FILTER_TYPE_BASE
(from IHDR) */
png_byte interlace_type PNG_DEPSTRUCT; /* One of PNG_INTERLACE_NONE,
PNG_INTERLACE_ADAM7 */
/* The following is informational only on read, and not used on writes. */
png_byte channels PNG_DEPSTRUCT; /* number of data channels per pixel (1, 2, 3, 4) */
png_byte channels PNG_DEPSTRUCT; /* number of data channels per
pixel (1, 2, 3, 4) */
png_byte pixel_depth PNG_DEPSTRUCT; /* number of bits per pixel */
png_byte spare_byte PNG_DEPSTRUCT; /* to align the data, and for future use */
png_byte signature[8] PNG_DEPSTRUCT; /* magic bytes read by libpng from start of file */
png_byte spare_byte PNG_DEPSTRUCT; /* to align the data, and for
future use */
png_byte signature[8] PNG_DEPSTRUCT; /* magic bytes read by libpng
from start of file */
/* The rest of the data is optional. If you are reading, check the
* valid field to see if the information in these are valid. If you
@ -660,13 +674,15 @@ typedef struct png_info_struct
* on which the image was created, normally in the range [1.0, 2.5].
* Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
*/
float gamma PNG_DEPSTRUCT; /* gamma value of image, if (valid & PNG_INFO_gAMA) */
float gamma PNG_DEPSTRUCT; /* gamma value of image,
if (valid & PNG_INFO_gAMA) */
#endif
#ifdef PNG_sRGB_SUPPORTED
/* GR-P, 0.96a */
/* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
png_byte srgb_intent PNG_DEPSTRUCT; /* sRGB rendering intent [0, 1, 2, or 3] */
png_byte srgb_intent PNG_DEPSTRUCT; /* sRGB rendering intent
[0, 1, 2, or 3] */
#endif
#ifdef PNG_TEXT_SUPPORTED
@ -711,8 +727,10 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
* single color specified that should be treated as fully transparent.
* Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
*/
png_bytep trans_alpha PNG_DEPSTRUCT; /* alpha values for paletted image */
png_color_16 trans_color PNG_DEPSTRUCT; /* transparent color for non-palette image */
png_bytep trans_alpha PNG_DEPSTRUCT; /* alpha values for paletted
image */
png_color_16 trans_color PNG_DEPSTRUCT; /* transparent color for
non-palette image */
#endif
#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
@ -743,7 +761,8 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
*/
png_uint_32 x_pixels_per_unit PNG_DEPSTRUCT; /* horizontal pixel density */
png_uint_32 y_pixels_per_unit PNG_DEPSTRUCT; /* vertical pixel density */
png_byte phys_unit_type PNG_DEPSTRUCT; /* resolution type (see PNG_RESOLUTION_ below) */
png_byte phys_unit_type PNG_DEPSTRUCT; /* resolution type (see
PNG_RESOLUTION_ below) */
#endif
#ifdef PNG_hIST_SUPPORTED
@ -790,14 +809,19 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
png_charp pcal_purpose PNG_DEPSTRUCT; /* pCAL chunk description string */
png_int_32 pcal_X0 PNG_DEPSTRUCT; /* minimum value */
png_int_32 pcal_X1 PNG_DEPSTRUCT; /* maximum value */
png_charp pcal_units PNG_DEPSTRUCT; /* Latin-1 string giving physical units */
png_charpp pcal_params PNG_DEPSTRUCT; /* ASCII strings containing parameter values */
png_byte pcal_type PNG_DEPSTRUCT; /* equation type (see PNG_EQUATION_ below) */
png_byte pcal_nparams PNG_DEPSTRUCT; /* number of parameters given in pcal_params */
png_charp pcal_units PNG_DEPSTRUCT; /* Latin-1 string giving physical
units */
png_charpp pcal_params PNG_DEPSTRUCT; /* ASCII strings containing
parameter values */
png_byte pcal_type PNG_DEPSTRUCT; /* equation type
(see PNG_EQUATION_ below) */
png_byte pcal_nparams PNG_DEPSTRUCT; /* number of parameters given
in pcal_params */
#endif
/* New members added in libpng-1.0.6 */
png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is responsible for freeing */
png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is
responsible for freeing */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
@ -809,7 +833,8 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
#ifdef PNG_iCCP_SUPPORTED
/* iCCP chunk data. */
png_charp iccp_name PNG_DEPSTRUCT; /* profile name */
png_charp iccp_profile PNG_DEPSTRUCT; /* International Color Consortium profile data */
png_charp iccp_profile PNG_DEPSTRUCT; /* International Color Consortium
profile data */
/* Note to maintainer: should be png_bytep */
png_uint_32 iccp_proflen PNG_DEPSTRUCT; /* ICC profile data length */
png_byte iccp_compression PNG_DEPSTRUCT; /* Always zero */
@ -841,13 +866,15 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
#endif
#ifdef PNG_INFO_IMAGE_SUPPORTED
/* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS) non-zero */
/* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
non-zero */
/* Data valid if (valid & PNG_INFO_IDAT) non-zero */
png_bytepp row_pointers PNG_DEPSTRUCT; /* the image bits */
#endif
#if defined(PNG_FIXED_POINT_SUPPORTED) && defined(PNG_gAMA_SUPPORTED)
png_fixed_point int_gamma PNG_DEPSTRUCT; /* gamma of image, if (valid & PNG_INFO_gAMA) */
png_fixed_point int_gamma PNG_DEPSTRUCT; /* gamma of image,
if (valid & PNG_INFO_gAMA) */
#endif
#if defined(PNG_cHRM_SUPPORTED) && defined(PNG_FIXED_POINT_SUPPORTED)
@ -1011,7 +1038,8 @@ typedef void (PNGAPI *png_write_status_ptr) PNGARG((png_structp, png_uint_32,
int));
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
typedef void (PNGAPI *png_progressive_info_ptr) PNGARG((png_structp, png_infop));
typedef void (PNGAPI *png_progressive_info_ptr) PNGARG((png_structp,
png_infop));
typedef void (PNGAPI *png_progressive_end_ptr) PNGARG((png_structp, png_infop));
typedef void (PNGAPI *png_progressive_row_ptr) PNGARG((png_structp, png_bytep,
png_uint_32, int));
@ -1025,11 +1053,12 @@ typedef void (PNGAPI *png_progressive_frame_ptr) PNGARG((png_structp,
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
typedef void (PNGAPI *png_user_transform_ptr) PNGARG((png_structp,
png_row_infop, png_bytep));
png_row_infop, png_bytep));
#endif
#ifdef PNG_USER_CHUNKS_SUPPORTED
typedef int (PNGAPI *png_user_chunk_ptr) PNGARG((png_structp, png_unknown_chunkp));
typedef int (PNGAPI *png_user_chunk_ptr) PNGARG((png_structp,
png_unknown_chunkp));
#endif
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp));
@ -1081,83 +1110,128 @@ struct png_struct_def
{
#ifdef PNG_SETJMP_SUPPORTED
jmp_buf jmpbuf PNG_DEPSTRUCT; /* used in png_error */
png_longjmp_ptr longjmp_fn PNG_DEPSTRUCT;/* setjmp non-local goto function. */
png_longjmp_ptr longjmp_fn PNG_DEPSTRUCT;/* setjmp non-local goto
function. */
#endif
png_error_ptr error_fn PNG_DEPSTRUCT; /* function for printing errors and aborting */
png_error_ptr warning_fn PNG_DEPSTRUCT; /* function for printing warnings */
png_voidp error_ptr PNG_DEPSTRUCT; /* user supplied struct for error functions */
png_rw_ptr write_data_fn PNG_DEPSTRUCT; /* function for writing output data */
png_rw_ptr read_data_fn PNG_DEPSTRUCT; /* function for reading input data */
png_voidp io_ptr PNG_DEPSTRUCT; /* ptr to application struct for I/O functions */
png_error_ptr error_fn PNG_DEPSTRUCT; /* function for printing
errors and aborting */
png_error_ptr warning_fn PNG_DEPSTRUCT; /* function for printing
warnings */
png_voidp error_ptr PNG_DEPSTRUCT; /* user supplied struct for
error functions */
png_rw_ptr write_data_fn PNG_DEPSTRUCT; /* function for writing
output data */
png_rw_ptr read_data_fn PNG_DEPSTRUCT; /* function for reading
input data */
png_voidp io_ptr PNG_DEPSTRUCT; /* ptr to application struct
for I/O functions */
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
png_user_transform_ptr read_user_transform_fn PNG_DEPSTRUCT; /* user read transform */
png_user_transform_ptr read_user_transform_fn PNG_DEPSTRUCT; /* user read
transform */
#endif
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
png_user_transform_ptr write_user_transform_fn PNG_DEPSTRUCT; /* user write transform */
png_user_transform_ptr write_user_transform_fn PNG_DEPSTRUCT; /* user write
transform */
#endif
/* These were added in libpng-1.0.2 */
#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
png_voidp user_transform_ptr PNG_DEPSTRUCT; /* user supplied struct for user transform */
png_byte user_transform_depth PNG_DEPSTRUCT; /* bit depth of user transformed pixels */
png_byte user_transform_channels PNG_DEPSTRUCT; /* channels in user transformed pixels */
png_voidp user_transform_ptr PNG_DEPSTRUCT; /* user supplied struct
for user transform */
png_byte user_transform_depth PNG_DEPSTRUCT; /* bit depth of user
transformed pixels */
png_byte user_transform_channels PNG_DEPSTRUCT; /* channels in user
transformed pixels */
#endif
#endif
png_uint_32 mode PNG_DEPSTRUCT; /* tells us where we are in the PNG file */
png_uint_32 flags PNG_DEPSTRUCT; /* flags indicating various things to libpng */
png_uint_32 transformations PNG_DEPSTRUCT; /* which transformations to perform */
png_uint_32 mode PNG_DEPSTRUCT; /* tells us where we are in
the PNG file */
png_uint_32 flags PNG_DEPSTRUCT; /* flags indicating various
things to libpng */
png_uint_32 transformations PNG_DEPSTRUCT; /* which transformations
to perform */
z_stream zstream PNG_DEPSTRUCT; /* pointer to decompression structure (below) */
z_stream zstream PNG_DEPSTRUCT; /* pointer to decompression
structure (below) */
png_bytep zbuf PNG_DEPSTRUCT; /* buffer for zlib */
png_size_t zbuf_size PNG_DEPSTRUCT; /* size of zbuf */
int zlib_level PNG_DEPSTRUCT; /* holds zlib compression level */
int zlib_method PNG_DEPSTRUCT; /* holds zlib compression method */
int zlib_window_bits PNG_DEPSTRUCT; /* holds zlib compression window bits */
int zlib_mem_level PNG_DEPSTRUCT; /* holds zlib compression memory level */
int zlib_strategy PNG_DEPSTRUCT; /* holds zlib compression strategy */
int zlib_window_bits PNG_DEPSTRUCT; /* holds zlib compression window
bits */
int zlib_mem_level PNG_DEPSTRUCT; /* holds zlib compression memory
level */
int zlib_strategy PNG_DEPSTRUCT; /* holds zlib compression
strategy */
png_uint_32 width PNG_DEPSTRUCT; /* width of image in pixels */
png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels */
png_uint_32 num_rows PNG_DEPSTRUCT; /* number of rows in current pass */
png_uint_32 usr_width PNG_DEPSTRUCT; /* width of row at start of write */
png_size_t rowbytes PNG_DEPSTRUCT; /* size of row in bytes */
png_size_t irowbytes PNG_DEPSTRUCT; /* size of current interlaced row in bytes */
png_uint_32 iwidth PNG_DEPSTRUCT; /* width of current interlaced row in pixels */
#if 0 /* Replaced with the following in libpng-1.4.1 */
png_size_t irowbytes PNG_DEPSTRUCT;
#endif
/* Added in libpng-1.4.1 */
#ifdef PNG_USER_LIMITS_SUPPORTED
/* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk
* can occupy when decompressed. 0 means unlimited.
* We will change the typedef from png_size_t to png_alloc_size_t
* in libpng-1.6.0
*/
png_alloc_size_t user_chunk_malloc_max PNG_DEPSTRUCT;
#endif
png_uint_32 iwidth PNG_DEPSTRUCT; /* width of current interlaced
row in pixels */
png_uint_32 row_number PNG_DEPSTRUCT; /* current row in interlace pass */
png_bytep prev_row PNG_DEPSTRUCT; /* buffer to save previous (unfiltered) row */
png_bytep row_buf PNG_DEPSTRUCT; /* buffer to save current (unfiltered) row */
png_bytep sub_row PNG_DEPSTRUCT; /* buffer to save "sub" row when filtering */
png_bytep up_row PNG_DEPSTRUCT; /* buffer to save "up" row when filtering */
png_bytep avg_row PNG_DEPSTRUCT; /* buffer to save "avg" row when filtering */
png_bytep paeth_row PNG_DEPSTRUCT; /* buffer to save "Paeth" row when filtering */
png_row_info row_info PNG_DEPSTRUCT; /* used for transformation routines */
png_bytep prev_row PNG_DEPSTRUCT; /* buffer to save previous
(unfiltered) row */
png_bytep row_buf PNG_DEPSTRUCT; /* buffer to save current
(unfiltered) row */
png_bytep sub_row PNG_DEPSTRUCT; /* buffer to save "sub" row
when filtering */
png_bytep up_row PNG_DEPSTRUCT; /* buffer to save "up" row
when filtering */
png_bytep avg_row PNG_DEPSTRUCT; /* buffer to save "avg" row
when filtering */
png_bytep paeth_row PNG_DEPSTRUCT; /* buffer to save "Paeth" row
when filtering */
png_row_info row_info PNG_DEPSTRUCT; /* used for transformation
routines */
png_uint_32 idat_size PNG_DEPSTRUCT; /* current IDAT size for read */
png_uint_32 crc PNG_DEPSTRUCT; /* current chunk CRC value */
png_colorp palette PNG_DEPSTRUCT; /* palette from the input file */
png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in palette */
png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in
palette */
png_uint_16 num_trans PNG_DEPSTRUCT; /* number of transparency values */
png_byte chunk_name[5] PNG_DEPSTRUCT; /* null-terminated name of current chunk */
png_byte compression PNG_DEPSTRUCT; /* file compression type (always 0) */
png_byte chunk_name[5] PNG_DEPSTRUCT; /* null-terminated name of current
chunk */
png_byte compression PNG_DEPSTRUCT; /* file compression type
(always 0) */
png_byte filter PNG_DEPSTRUCT; /* file filter type (always 0) */
png_byte interlaced PNG_DEPSTRUCT; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
png_byte interlaced PNG_DEPSTRUCT; /* PNG_INTERLACE_NONE,
PNG_INTERLACE_ADAM7 */
png_byte pass PNG_DEPSTRUCT; /* current interlace pass (0 - 6) */
png_byte do_filter PNG_DEPSTRUCT; /* row filter flags (see PNG_FILTER_ below ) */
png_byte do_filter PNG_DEPSTRUCT; /* row filter flags (see
PNG_FILTER_ below ) */
png_byte color_type PNG_DEPSTRUCT; /* color type of file */
png_byte bit_depth PNG_DEPSTRUCT; /* bit depth of file */
png_byte usr_bit_depth PNG_DEPSTRUCT; /* bit depth of users row */
png_byte pixel_depth PNG_DEPSTRUCT; /* number of bits per pixel */
png_byte channels PNG_DEPSTRUCT; /* number of channels in file */
png_byte usr_channels PNG_DEPSTRUCT; /* channels at start of write */
png_byte sig_bytes PNG_DEPSTRUCT; /* magic bytes read/written from start of file */
png_byte sig_bytes PNG_DEPSTRUCT; /* magic bytes read/written from
start of file */
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
png_uint_16 filler PNG_DEPSTRUCT; /* filler bytes for pixel expansion */
png_uint_16 filler PNG_DEPSTRUCT; /* filler bytes for pixel
expansion */
#endif
#ifdef PNG_bKGD_SUPPORTED
@ -1165,73 +1239,108 @@ struct png_struct_def
# ifdef PNG_FLOATING_POINT_SUPPORTED
float background_gamma PNG_DEPSTRUCT;
# endif
png_color_16 background PNG_DEPSTRUCT; /* background color in screen gamma space */
png_color_16 background PNG_DEPSTRUCT; /* background color in
screen gamma space */
#ifdef PNG_READ_GAMMA_SUPPORTED
png_color_16 background_1 PNG_DEPSTRUCT; /* background normalized to gamma 1.0 */
png_color_16 background_1 PNG_DEPSTRUCT; /* background normalized
to gamma 1.0 */
#endif
#endif /* PNG_bKGD_SUPPORTED */
#ifdef PNG_WRITE_FLUSH_SUPPORTED
png_flush_ptr output_flush_fn PNG_DEPSTRUCT; /* Function for flushing output */
png_uint_32 flush_dist PNG_DEPSTRUCT; /* how many rows apart to flush, 0 - no flush */
png_uint_32 flush_rows PNG_DEPSTRUCT; /* number of rows written since last flush */
png_flush_ptr output_flush_fn PNG_DEPSTRUCT; /* Function for flushing
output */
png_uint_32 flush_dist PNG_DEPSTRUCT; /* how many rows apart to flush,
0 - no flush */
png_uint_32 flush_rows PNG_DEPSTRUCT; /* number of rows written since
last flush */
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
int gamma_shift PNG_DEPSTRUCT; /* number of "insignificant" bits 16-bit gamma */
int gamma_shift PNG_DEPSTRUCT; /* number of "insignificant" bits
16-bit gamma */
#ifdef PNG_FLOATING_POINT_SUPPORTED
float gamma PNG_DEPSTRUCT; /* file gamma value */
float screen_gamma PNG_DEPSTRUCT; /* screen gamma value (display_exponent) */
float screen_gamma PNG_DEPSTRUCT; /* screen gamma value
(display_exponent) */
#endif
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
png_bytep gamma_table PNG_DEPSTRUCT; /* gamma table for 8-bit depth files */
png_bytep gamma_table PNG_DEPSTRUCT; /* gamma table for 8-bit
depth files */
png_bytep gamma_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to screen */
png_bytep gamma_to_1 PNG_DEPSTRUCT; /* converts from file to 1.0 */
png_uint_16pp gamma_16_table PNG_DEPSTRUCT; /* gamma table for 16-bit depth files */
png_uint_16pp gamma_16_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to screen */
png_uint_16pp gamma_16_table PNG_DEPSTRUCT; /* gamma table for 16-bit
depth files */
png_uint_16pp gamma_16_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to
screen */
png_uint_16pp gamma_16_to_1 PNG_DEPSTRUCT; /* converts from file to 1.0 */
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
png_color_8 sig_bit PNG_DEPSTRUCT; /* significant bits in each available channel */
png_color_8 sig_bit PNG_DEPSTRUCT; /* significant bits in each
available channel */
#endif
#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
png_color_8 shift PNG_DEPSTRUCT; /* shift for significant bit tranformation */
png_color_8 shift PNG_DEPSTRUCT; /* shift for significant bit
tranformation */
#endif
#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
|| defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
png_bytep trans_alpha PNG_DEPSTRUCT; /* alpha values for paletted files */
png_color_16 trans_color PNG_DEPSTRUCT; /* transparent color for non-paletted files */
png_bytep trans_alpha PNG_DEPSTRUCT; /* alpha values for
paletted files */
png_color_16 trans_color PNG_DEPSTRUCT; /* transparent color for
non-paletted files */
#endif
png_read_status_ptr read_row_fn PNG_DEPSTRUCT; /* called after each row is decoded */
png_write_status_ptr write_row_fn PNG_DEPSTRUCT; /* called after each row is encoded */
png_read_status_ptr read_row_fn PNG_DEPSTRUCT; /* called after each
row is decoded */
png_write_status_ptr write_row_fn PNG_DEPSTRUCT; /* called after each
row is encoded */
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
png_progressive_info_ptr info_fn PNG_DEPSTRUCT; /* called after header data fully read */
png_progressive_row_ptr row_fn PNG_DEPSTRUCT; /* called after each prog. row is decoded */
png_progressive_end_ptr end_fn PNG_DEPSTRUCT; /* called after image is complete */
png_bytep save_buffer_ptr PNG_DEPSTRUCT; /* current location in save_buffer */
png_bytep save_buffer PNG_DEPSTRUCT; /* buffer for previously read data */
png_bytep current_buffer_ptr PNG_DEPSTRUCT; /* current location in current_buffer */
png_bytep current_buffer PNG_DEPSTRUCT; /* buffer for recently used data */
png_uint_32 push_length PNG_DEPSTRUCT; /* size of current input chunk */
png_uint_32 skip_length PNG_DEPSTRUCT; /* bytes to skip in input data */
png_size_t save_buffer_size PNG_DEPSTRUCT; /* amount of data now in save_buffer */
png_size_t save_buffer_max PNG_DEPSTRUCT; /* total size of save_buffer */
png_size_t buffer_size PNG_DEPSTRUCT; /* total amount of available input data */
png_size_t current_buffer_size PNG_DEPSTRUCT; /* amount of data now in current_buffer */
int process_mode PNG_DEPSTRUCT; /* what push library is currently doing */
int cur_palette PNG_DEPSTRUCT; /* current push library palette index */
png_progressive_info_ptr info_fn PNG_DEPSTRUCT; /* called after header
data fully read */
png_progressive_row_ptr row_fn PNG_DEPSTRUCT; /* called after each
prog. row is decoded */
png_progressive_end_ptr end_fn PNG_DEPSTRUCT; /* called after image
is complete */
png_bytep save_buffer_ptr PNG_DEPSTRUCT; /* current location in
save_buffer */
png_bytep save_buffer PNG_DEPSTRUCT; /* buffer for previously
read data */
png_bytep current_buffer_ptr PNG_DEPSTRUCT; /* current location in
current_buffer */
png_bytep current_buffer PNG_DEPSTRUCT; /* buffer for recently
used data */
png_uint_32 push_length PNG_DEPSTRUCT; /* size of current input
chunk */
png_uint_32 skip_length PNG_DEPSTRUCT; /* bytes to skip in
input data */
png_size_t save_buffer_size PNG_DEPSTRUCT; /* amount of data now
in save_buffer */
png_size_t save_buffer_max PNG_DEPSTRUCT; /* total size of
save_buffer */
png_size_t buffer_size PNG_DEPSTRUCT; /* total amount of
available input data */
png_size_t current_buffer_size PNG_DEPSTRUCT; /* amount of data now
in current_buffer */
int process_mode PNG_DEPSTRUCT; /* what push library
is currently doing */
int cur_palette PNG_DEPSTRUCT; /* current push library
palette index */
# ifdef PNG_TEXT_SUPPORTED
png_size_t current_text_size PNG_DEPSTRUCT; /* current size of text input data */
png_size_t current_text_left PNG_DEPSTRUCT; /* how much text left to read in input */
png_charp current_text PNG_DEPSTRUCT; /* current text chunk buffer */
png_charp current_text_ptr PNG_DEPSTRUCT; /* current location in current_text */
png_size_t current_text_size PNG_DEPSTRUCT; /* current size of
text input data */
png_size_t current_text_left PNG_DEPSTRUCT; /* how much text left
to read in input */
png_charp current_text PNG_DEPSTRUCT; /* current text chunk
buffer */
png_charp current_text_ptr PNG_DEPSTRUCT; /* current location
in current_text */
# endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
@ -1246,8 +1355,9 @@ struct png_struct_def
#endif
#ifdef PNG_READ_DITHER_SUPPORTED
png_bytep palette_lookup PNG_DEPSTRUCT; /* lookup table for dithering */
png_bytep dither_index PNG_DEPSTRUCT; /* index translation for palette files */
png_bytep palette_lookup PNG_DEPSTRUCT; /* lookup table for dithering */
png_bytep dither_index PNG_DEPSTRUCT; /* index translation for palette
files */
#endif
#if defined(PNG_READ_DITHER_SUPPORTED) || defined(PNG_hIST_SUPPORTED)
@ -1255,26 +1365,35 @@ struct png_struct_def
#endif
#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
png_byte heuristic_method PNG_DEPSTRUCT; /* heuristic for row filter selection */
png_byte num_prev_filters PNG_DEPSTRUCT; /* number of weights for previous rows */
png_bytep prev_filters PNG_DEPSTRUCT; /* filter type(s) of previous row(s) */
png_uint_16p filter_weights PNG_DEPSTRUCT; /* weight(s) for previous line(s) */
png_uint_16p inv_filter_weights PNG_DEPSTRUCT; /* 1/weight(s) for previous line(s) */
png_uint_16p filter_costs PNG_DEPSTRUCT; /* relative filter calculation cost */
png_uint_16p inv_filter_costs PNG_DEPSTRUCT; /* 1/relative filter calculation cost */
png_byte heuristic_method PNG_DEPSTRUCT; /* heuristic for row
filter selection */
png_byte num_prev_filters PNG_DEPSTRUCT; /* number of weights
for previous rows */
png_bytep prev_filters PNG_DEPSTRUCT; /* filter type(s) of
previous row(s) */
png_uint_16p filter_weights PNG_DEPSTRUCT; /* weight(s) for previous
line(s) */
png_uint_16p inv_filter_weights PNG_DEPSTRUCT; /* 1/weight(s) for
previous line(s) */
png_uint_16p filter_costs PNG_DEPSTRUCT; /* relative filter
calculation cost */
png_uint_16p inv_filter_costs PNG_DEPSTRUCT; /* 1/relative filter
calculation cost */
#endif
#ifdef PNG_TIME_RFC1123_SUPPORTED
png_charp time_buffer PNG_DEPSTRUCT; /* String to hold RFC 1123 time text */
png_charp time_buffer PNG_DEPSTRUCT; /* String to hold RFC 1123 time text */
#endif
/* New members added in libpng-1.0.6 */
png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is responsible for freeing */
png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is
responsible for freeing */
#ifdef PNG_USER_CHUNKS_SUPPORTED
png_voidp user_chunk_ptr PNG_DEPSTRUCT;
png_user_chunk_ptr read_user_chunk_fn PNG_DEPSTRUCT; /* user read chunk handler */
png_user_chunk_ptr read_user_chunk_fn PNG_DEPSTRUCT; /* user read
chunk handler */
#endif
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
@ -1313,31 +1432,37 @@ 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 PNG_DEPSTRUCT; /* user supplied struct for mem functions */
png_malloc_ptr malloc_fn PNG_DEPSTRUCT; /* function for allocating memory */
png_free_ptr free_fn PNG_DEPSTRUCT; /* function for freeing memory */
png_voidp mem_ptr PNG_DEPSTRUCT; /* user supplied struct for
mem functions */
png_malloc_ptr malloc_fn PNG_DEPSTRUCT; /* function for
allocating memory */
png_free_ptr free_fn PNG_DEPSTRUCT; /* function for
freeing memory */
#endif
/* New member added in libpng-1.0.13 and 1.2.0 */
png_bytep big_row_buf PNG_DEPSTRUCT; /* buffer to save current (unfiltered) row */
png_bytep big_row_buf PNG_DEPSTRUCT; /* buffer to save current
(unfiltered) row */
#ifdef PNG_READ_DITHER_SUPPORTED
/* The following three members were added at version 1.0.14 and 1.2.4 */
png_bytep dither_sort PNG_DEPSTRUCT; /* working sort array */
png_bytep index_to_palette PNG_DEPSTRUCT; /* where the original index currently is */
/* in the palette */
png_bytep palette_to_index PNG_DEPSTRUCT; /* which original index points to this */
/* palette color */
png_bytep index_to_palette PNG_DEPSTRUCT; /* where the original
index currently is
in the palette */
png_bytep palette_to_index PNG_DEPSTRUCT; /* which original index
points to this
palette color */
#endif
/* New members added in libpng-1.0.16 and 1.2.6 */
png_byte compression_type PNG_DEPSTRUCT;
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
#ifdef PNG_USER_LIMITS_SUPPORTED
png_uint_32 user_width_max PNG_DEPSTRUCT;
png_uint_32 user_height_max PNG_DEPSTRUCT;
/* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
* chunks that can be stored (0x7fffffff means unlimited).
* chunks that can be stored (0 means unlimited).
*/
png_uint_32 user_chunk_cache_max PNG_DEPSTRUCT;
#endif
@ -1355,8 +1480,8 @@ struct png_struct_def
/* New member added in libpng-1.2.30 */
png_charp chunkdata PNG_DEPSTRUCT; /* buffer for reading chunk data */
/* New member added in libpng-1.4.0 */
#ifdef PNG_IO_STATE_SUPPORTED
/* New member added in libpng-1.4.0 */
png_uint_32 io_state PNG_DEPSTRUCT;
#endif
@ -1399,7 +1524,7 @@ 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_4_0;
typedef png_structp version_1_4_1;
typedef png_struct FAR * FAR * png_structpp;
@ -1436,15 +1561,11 @@ extern PNG_EXPORT(png_structp,png_create_write_struct)
PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
png_error_ptr error_fn, png_error_ptr warn_fn)) PNG_ALLOCATED;
#ifdef PNG_WRITE_SUPPORTED
extern PNG_EXPORT(png_size_t,png_get_compression_buffer_size)
PNGARG((png_structp png_ptr));
#endif
#ifdef PNG_WRITE_SUPPORTED
extern PNG_EXPORT(void,png_set_compression_buffer_size)
PNGARG((png_structp png_ptr, png_size_t size));
#endif
/* Moved from pngconf.h in 1.4.0 and modified to ensure setjmp/longjmp
* match up.
@ -1458,7 +1579,8 @@ extern PNG_EXPORT(void,png_set_compression_buffer_size)
* indicating an ABI mismatch.
*/
extern PNG_EXPORT(jmp_buf*, png_set_longjmp_fn)
PNGARG((png_structp png_ptr, png_longjmp_ptr longjmp_fn, size_t jmp_buf_size));
PNGARG((png_structp png_ptr, png_longjmp_ptr longjmp_fn, size_t
jmp_buf_size));
# define png_jmpbuf(png_ptr) \
(*png_set_longjmp_fn((png_ptr), longjmp, sizeof (jmp_buf)))
#else
@ -1603,7 +1725,8 @@ extern PNG_EXPORT(void,png_set_swap) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(void,png_set_packing) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED)
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \
defined(PNG_WRITE_PACKSWAP_SUPPORTED)
/* Swap packing order of pixels in bytes. */
extern PNG_EXPORT(void,png_set_packswap) PNGARG((png_structp png_ptr));
#endif
@ -1644,7 +1767,9 @@ extern PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr));
#endif
#ifdef PNG_READ_DITHER_SUPPORTED
/* Turn on dithering, and reduce the palette to the number of colors available. */
/* Turn on dithering, and reduce the palette to the number of colors
* available.
*/
extern PNG_EXPORT(void,png_set_dither) PNGARG((png_structp png_ptr,
png_colorp palette, int num_palette, int maximum_colors,
png_uint_16p histogram, int full_dither));
@ -1873,7 +1998,8 @@ extern PNG_EXPORT(void,png_set_compression_method) PNGARG((png_structp png_ptr,
#ifdef PNG_STDIO_SUPPORTED
/* Initialize the input/output for the PNG file to the default functions. */
extern PNG_EXPORT(void,png_init_io) PNGARG((png_structp png_ptr, png_FILE_p fp));
extern PNG_EXPORT(void,png_init_io) PNGARG((png_structp png_ptr,
png_FILE_p fp));
#endif
/* Replace the (error and abort), and warning functions with user
@ -2488,7 +2614,8 @@ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
extern PNG_EXPORT(png_charp,png_get_copyright) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(png_charp,png_get_header_ver) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr));
extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp
png_ptr));
extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr));
#ifdef PNG_MNG_FEATURES_SUPPORTED
@ -2523,6 +2650,11 @@ extern PNG_EXPORT(void,png_set_chunk_cache_max) PNGARG((png_structp
png_ptr, png_uint_32 user_chunk_cache_max));
extern PNG_EXPORT(png_uint_32,png_get_chunk_cache_max)
PNGARG((png_structp png_ptr));
/* Added in libpng-1.4.1 */
extern PNG_EXPORT(void,png_set_chunk_malloc_max) PNGARG((png_structp
png_ptr, png_alloc_size_t user_chunk_cache_max));
extern PNG_EXPORT(png_alloc_size_t,png_get_chunk_malloc_max)
PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED)
@ -2585,16 +2717,18 @@ extern PNG_EXPORT(png_bytep,png_get_io_chunk_name)
/* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
# define png_composite(composite, fg, alpha, bg) \
{ png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) * (png_uint_16)(alpha) \
+ (png_uint_16)(bg)*(png_uint_16)(255 - \
(png_uint_16)(alpha)) + (png_uint_16)128); \
# define png_composite(composite, fg, alpha, bg) \
{ png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) \
* (png_uint_16)(alpha) \
+ (png_uint_16)(bg)*(png_uint_16)(255 \
- (png_uint_16)(alpha)) + (png_uint_16)128); \
(composite) = (png_byte)((temp + (temp >> 8)) >> 8); }
# define png_composite_16(composite, fg, alpha, bg) \
{ png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) * (png_uint_32)(alpha) \
+ (png_uint_32)(bg)*(png_uint_32)(65535L - \
(png_uint_32)(alpha)) + (png_uint_32)32768L); \
# define png_composite_16(composite, fg, alpha, bg) \
{ png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) \
* (png_uint_32)(alpha) \
+ (png_uint_32)(bg)*(png_uint_32)(65535L \
- (png_uint_32)(alpha)) + (png_uint_32)32768L); \
(composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); }
#else /* Standard method using integer division */

66
modules/libimg/png/pngconf.h
View File

@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng version 1.4.0 - January 3, 2010
* libpng version 1.4.1 - February 25, 2010
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -30,7 +30,9 @@
/* Added at libpng-1.2.9 */
/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure"
* script.
*/
#ifdef PNG_CONFIGURE_LIBPNG
# ifdef HAVE_CONFIG_H
# include "config.h"
@ -674,14 +676,29 @@
#endif
/* Added at libpng-1.2.6 */
#ifndef PNG_SET_USER_LIMITS_SUPPORTED
# ifndef PNG_NO_SET_USER_LIMITS
#ifndef PNG_NO_SET_USER_LIMITS
# ifndef PNG_SET_USER_LIMITS_SUPPORTED
# define PNG_SET_USER_LIMITS_SUPPORTED
# endif
/* Feature added at libpng-1.4.0, this flag added at 1.4.1 */
# ifndef PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
# define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
# endif
/* Feature added at libpng-1.4.1, this flag added at 1.4.1 */
# ifndef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
# define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
# endif
#endif
/* Added at libpng-1.2.43 */
#ifndef PNG_USER_LIMITS_SUPPORTED
# ifndef PNG_NO_USER_LIMITS
# define PNG_USER_LIMITS_SUPPORTED
# endif
#endif
/* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
* how large, set these limits to 0x7fffffffL
* how large, set these two limits to 0x7fffffffL
*/
#ifndef PNG_USER_WIDTH_MAX
# define PNG_USER_WIDTH_MAX 1000000L
@ -690,9 +707,16 @@
# define PNG_USER_HEIGHT_MAX 1000000L
#endif
/* Added at libpng-1.4.0 */
/* Added at libpng-1.2.43. To accept all valid PNGs no matter
* how large, set these two limits to 0.
*/
#ifndef PNG_USER_CHUNK_CACHE_MAX
# define PNG_USER_CHUNK_CACHE_MAX 0x7fffffffL
# define PNG_USER_CHUNK_CACHE_MAX 0
#endif
/* Added at libpng-1.2.43 */
#ifndef PNG_USER_CHUNK_MALLOC_MAX
# define PNG_USER_CHUNK_MALLOC_MAX 0
#endif
/* Added at libpng-1.4.0 */
@ -867,20 +891,22 @@
#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
# ifndef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
# endif
# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
# define PNG_UNKNOWN_CHUNKS_SUPPORTED
# endif
#endif
#if !defined(PNG_NO_READ_USER_CHUNKS) && \
defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
# define PNG_READ_USER_CHUNKS_SUPPORTED
# define PNG_USER_CHUNKS_SUPPORTED
# ifdef PNG_NO_READ_UNKNOWN_CHUNKS
# undef PNG_NO_READ_UNKNOWN_CHUNKS
# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
# define PNG_READ_USER_CHUNKS_SUPPORTED
# endif
# ifdef PNG_NO_HANDLE_AS_UNKNOWN
# undef PNG_NO_HANDLE_AS_UNKNOWN
#endif
#ifndef PNG_NO_READ_USER_CHUNKS
# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
# define PNG_READ_USER_CHUNKS_SUPPORTED
# endif
# ifndef PNG_USER_CHUNKS_SUPPORTED
# define PNG_USER_CHUNKS_SUPPORTED
# endif
#endif
#ifndef PNG_NO_HANDLE_AS_UNKNOWN
@ -1031,8 +1057,10 @@
#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
#if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
# define PNG_WRITE_FILTER_SUPPORTED
#ifndef PNG_NO_WRITE_FILTER
# ifndef PNG_WRITE_FILTER_SUPPORTED
# define PNG_WRITE_FILTER_SUPPORTED
# endif
#endif
#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS

19
modules/libimg/png/pngget.c
View File

@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -1032,17 +1032,16 @@ png_get_user_chunk_ptr(png_structp png_ptr)
}
#endif
#ifdef PNG_WRITE_SUPPORTED
png_size_t PNGAPI
png_get_compression_buffer_size(png_structp png_ptr)
{
return (png_ptr ? png_ptr->zbuf_size : 0L);
}
#endif
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* These functions were added to libpng 1.2.6 */
/* These functions were added to libpng 1.2.6 and were enabled
* by default in libpng-1.4.0 */
png_uint_32 PNGAPI
png_get_user_width_max (png_structp png_ptr)
{
@ -1053,15 +1052,23 @@ png_get_user_height_max (png_structp png_ptr)
{
return (png_ptr? png_ptr->user_height_max : 0);
}
/* This function was added to libpng 1.4.0 */
png_uint_32 PNGAPI
png_get_chunk_cache_max (png_structp png_ptr)
{
return (png_ptr? png_ptr->user_chunk_cache_max? 0x7fffffffL :
png_ptr->user_chunk_cache_max - 1 : 0);
return (png_ptr? png_ptr->user_chunk_cache_max : 0);
}
/* This function was added to libpng 1.4.1 */
png_alloc_size_t PNGAPI
png_get_chunk_malloc_max (png_structp png_ptr)
{
return (png_ptr?
png_ptr->user_chunk_malloc_max : 0);
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
/* These functions were added to libpng 1.4.0 */
#ifdef PNG_IO_STATE_SUPPORTED
png_uint_32 PNGAPI
png_get_io_state (png_structp png_ptr)

6
modules/libimg/png/pngmem.c
View File

@ -1,7 +1,7 @@
/* pngmem.c - stub functions for memory allocation
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.0 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -201,7 +201,7 @@ png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out Of Memory"); /* Note "O" and "M" */
png_error(png_ptr, "Out Of Memory"); /* Note "O", "M" */
else
png_warning(png_ptr, "Out Of Memory");
#endif
@ -229,7 +229,7 @@ png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out Of memory"); /* Note "O" and "M" */
png_error(png_ptr, "Out Of memory"); /* Note "O", "m" */
else
png_warning(png_ptr, "Out Of memory");
#endif

91
modules/libimg/png/pngpread.c
View File

@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -205,7 +205,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_zTXt;
#endif
#if defined(PNG_READ_APNG_SUPPORTED)
#ifdef PNG_READ_APNG_SUPPORTED
PNG_acTL;
PNG_fcTL;
PNG_fdAT;
@ -235,7 +235,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
}
#if defined(PNG_READ_APNG_SUPPORTED)
#ifdef PNG_READ_APNG_SUPPORTED
if (png_ptr->num_frames_read > 0 &&
png_ptr->num_frames_read < info_ptr->num_frames)
{
@ -333,8 +333,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
#endif /* PNG_READ_APNG_SUPPORTED */
if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
if (png_ptr->mode & PNG_AFTER_IDAT)
png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
if (png_ptr->mode & PNG_AFTER_IDAT)
png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
if (!png_memcmp(png_ptr->chunk_name, png_IHDR, 4))
{
@ -426,14 +426,16 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
if (png_ptr->mode & PNG_AFTER_IDAT)
png_benign_error(png_ptr, "Too many IDATs found");
}
#if defined(PNG_READ_APNG_SUPPORTED)
#ifdef PNG_READ_APNG_SUPPORTED
png_have_info(png_ptr, info_ptr);
#endif
png_ptr->idat_size = png_ptr->push_length;
png_ptr->mode |= PNG_HAVE_IDAT;
png_ptr->process_mode = PNG_READ_IDAT_MODE;
png_push_have_info(png_ptr, info_ptr);
png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
png_ptr->zstream.avail_out =
(uInt) PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1;
png_ptr->zstream.next_out = png_ptr->row_buf;
return;
}
@ -659,7 +661,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
}
#endif
#if defined(PNG_READ_APNG_SUPPORTED)
#ifdef PNG_READ_APNG_SUPPORTED
else if (!png_memcmp(png_ptr->chunk_name, png_acTL, 4))
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@ -831,8 +833,13 @@ png_push_save_buffer(png_structp png_ptr)
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,
(png_size_t)new_max);
png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr,
(png_size_t)new_max);
if (png_ptr->save_buffer == NULL)
{
png_free(png_ptr, old_buffer);
png_error(png_ptr, "Insufficient memory for save_buffer");
}
png_memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
png_free(png_ptr, old_buffer);
png_ptr->save_buffer_max = new_max;
@ -840,7 +847,7 @@ png_push_save_buffer(png_structp png_ptr)
if (png_ptr->current_buffer_size)
{
png_memcpy(png_ptr->save_buffer + png_ptr->save_buffer_size,
png_ptr->current_buffer_ptr, png_ptr->current_buffer_size);
png_ptr->current_buffer_ptr, png_ptr->current_buffer_size);
png_ptr->save_buffer_size += png_ptr->current_buffer_size;
png_ptr->current_buffer_size = 0;
}
@ -862,7 +869,7 @@ void /* PRIVATE */
png_push_read_IDAT(png_structp png_ptr)
{
PNG_IDAT;
#if defined(PNG_READ_APNG_SUPPORTED)
#ifdef PNG_READ_APNG_SUPPORTED
PNG_fdAT;
PNG_IEND;
#endif
@ -870,7 +877,11 @@ png_push_read_IDAT(png_structp png_ptr)
{
png_byte chunk_length[4];
#ifdef PNG_READ_APNG_SUPPORTED
if (png_ptr->buffer_size < 12)
#else
if (png_ptr->buffer_size < 8)
#endif
{
png_push_save_buffer(png_ptr);
return;
@ -882,7 +893,7 @@ png_push_read_IDAT(png_structp png_ptr)
png_crc_read(png_ptr, png_ptr->chunk_name, 4);
png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
#if defined(PNG_READ_APNG_SUPPORTED)
#ifdef PNG_READ_APNG_SUPPORTED
if (png_memcmp(png_ptr->chunk_name, (png_bytep)png_fdAT, 4)
&& png_ptr->num_frames_read > 0)
{
@ -912,16 +923,17 @@ png_push_read_IDAT(png_structp png_ptr)
}
else
#endif
if ( png_memcmp(png_ptr->chunk_name, png_IDAT, 4)
#if defined(PNG_READ_APNG_SUPPORTED)
&& (png_ptr->num_frames_read == 0)
#ifdef PNG_READ_APNG_SUPPORTED
if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)
&& (png_ptr->num_frames_read == 0))
#else
if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
#endif
)
{
png_ptr->process_mode = PNG_READ_CHUNK_MODE;
if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
png_error(png_ptr, "Not enough compressed data");
#if defined(PNG_READ_APNG_SUPPORTED)
#ifdef PNG_READ_APNG_SUPPORTED
if (png_ptr->frame_end_fn != NULL)
(*(png_ptr->frame_end_fn))(png_ptr, png_ptr->num_frames_read);
png_ptr->num_frames_read++;
@ -931,7 +943,7 @@ png_push_read_IDAT(png_structp png_ptr)
png_ptr->idat_size = png_ptr->push_length;
#if defined(PNG_READ_APNG_SUPPORTED)
#ifdef PNG_READ_APNG_SUPPORTED
if (png_ptr->num_frames_read > 0)
{
png_ensure_sequence_number(png_ptr, 4);
@ -981,7 +993,7 @@ png_push_read_IDAT(png_structp png_ptr)
png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size);
png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size);
png_ptr->idat_size -= save_size;
png_ptr->buffer_size -= save_size;
@ -1053,7 +1065,9 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
break;
}
png_push_process_row(png_ptr);
png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
png_ptr->zstream.avail_out =
(uInt) PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1;
png_ptr->zstream.next_out = png_ptr->row_buf;
}
@ -1318,9 +1332,6 @@ png_read_push_finish_row(png_structp png_ptr)
png_pass_start[png_ptr->pass]) /
png_pass_inc[png_ptr->pass];
png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1;
if (png_ptr->transformations & PNG_INTERLACE)
break;
@ -1427,7 +1438,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
png_ptr->current_text = NULL;
if (ret)
png_warning(png_ptr, "Insufficient memory to store text chunk");
png_warning(png_ptr, "Insufficient memory to store text chunk");
}
}
#endif
@ -1628,7 +1639,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
png_free(png_ptr, text_ptr);
if (ret)
png_warning(png_ptr, "Insufficient memory to store text chunk");
png_warning(png_ptr, "Insufficient memory to store text chunk");
}
}
#endif
@ -1656,7 +1667,7 @@ png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
#endif
png_ptr->current_text = (png_charp)png_malloc(png_ptr,
(png_size_t)(length + 1));
(png_size_t)(length + 1));
png_ptr->current_text[length] = '\0';
png_ptr->current_text_ptr = png_ptr->current_text;
png_ptr->current_text_size = (png_size_t)length;
@ -1749,7 +1760,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
png_free(png_ptr, text_ptr);
if (ret)
png_warning(png_ptr, "Insufficient memory to store iTXt chunk");
png_warning(png_ptr, "Insufficient memory to store iTXt chunk");
}
}
#endif
@ -1768,11 +1779,11 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
{
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
PNG_HANDLE_CHUNK_ALWAYS
PNG_HANDLE_CHUNK_ALWAYS
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
&& png_ptr->read_user_chunk_fn == NULL
&& png_ptr->read_user_chunk_fn == NULL
#endif
)
)
#endif
png_chunk_error(png_ptr, "unknown critical chunk");
@ -1791,10 +1802,10 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
}
#endif
png_memcpy((png_charp)png_ptr->unknown_chunk.name,
(png_charp)png_ptr->chunk_name,
png_sizeof(png_ptr->unknown_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';
= '\0';
png_ptr->unknown_chunk.size = (png_size_t)length;
@ -1804,7 +1815,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
else
{
png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr,
(png_size_t)length);
(png_size_t)length);
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
}
@ -1814,7 +1825,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
/* Callback to user unknown chunk handler */
int ret;
ret = (*(png_ptr->read_user_chunk_fn))
(png_ptr, &png_ptr->unknown_chunk);
(png_ptr, &png_ptr->unknown_chunk);
if (ret < 0)
png_chunk_error(png_ptr, "error in user chunk");
@ -1823,16 +1834,16 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
{
if (!(png_ptr->chunk_name[0] & 0x20))
if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
PNG_HANDLE_CHUNK_ALWAYS)
PNG_HANDLE_CHUNK_ALWAYS)
png_chunk_error(png_ptr, "unknown critical chunk");
png_set_unknown_chunks(png_ptr, info_ptr,
&png_ptr->unknown_chunk, 1);
&png_ptr->unknown_chunk, 1);
}
}
else
#endif
png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
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;
}
@ -1894,7 +1905,7 @@ png_set_progressive_read_fn(png_structp png_ptr, png_voidp progressive_ptr,
png_set_read_fn(png_ptr, progressive_ptr, png_push_fill_buffer);
}
#if defined(PNG_READ_APNG_SUPPORTED)
#ifdef PNG_READ_APNG_SUPPORTED
void PNGAPI
png_set_progressive_frame_fn(png_structp png_ptr,
png_progressive_frame_ptr frame_info_fn,

9
modules/libimg/png/pngpriv.h
View File

@ -1,7 +1,7 @@
/* pngpriv.h - private declarations for use inside libpng
*
* libpng version 1.4.0 - January 3, 2010
* libpng version 1.4.1 - February 25, 2010
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -360,8 +360,8 @@ PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));
PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma));
#endif
#ifdef PNG_FIXED_POINT_SUPPORTED
PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, png_fixed_point
file_gamma));
PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr,
png_fixed_point file_gamma));
#endif
#endif
@ -590,7 +590,8 @@ PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info,
PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row));
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED)
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \
defined(PNG_WRITE_PACKSWAP_SUPPORTED)
PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row));
#endif

70
modules/libimg/png/pngread.c
View File

@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -31,7 +31,9 @@ png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr,
warn_fn, NULL, NULL, NULL));
}
/* Alternate create PNG structure for reading, and allocate any memory needed. */
/* Alternate create PNG structure for reading, and allocate any memory
* needed.
*/
png_structp PNGAPI
png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
@ -65,11 +67,17 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
return (NULL);
/* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
#ifdef PNG_USER_LIMITS_SUPPORTED
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
/* Added at libpng-1.4.0 */
# ifdef PNG_USER_CHUNK_CACHE_MAX
/* Added at libpng-1.2.43 and 1.4.0 */
png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
# endif
# ifdef PNG_SET_USER_CHUNK_MALLOC_MAX
/* Added at libpng-1.2.43 and 1.4.1 */
png_ptr->user_chunk_malloc_max = PNG_USER_CHUNK_MALLOC_MAX;
# endif
#endif
#ifdef PNG_SETJMP_SUPPORTED
@ -291,6 +299,11 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
#endif
#ifdef PNG_READ_zTXt_SUPPORTED
PNG_zTXt;
#endif
#if defined(PNG_READ_APNG_SUPPORTED)
PNG_acTL;
PNG_fcTL;
PNG_fdAT;
#endif
png_uint_32 length = png_read_chunk_header(png_ptr);
PNG_CONST png_bytep chunk_name = png_ptr->chunk_name;
@ -448,11 +461,9 @@ png_read_frame_head(png_structp png_ptr, png_infop info_ptr)
have_chunk_after_DAT = 0;
for (;;)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_IDAT;
PNG_fdAT;
PNG_fcTL;
#endif
png_byte chunk_length[4];
png_uint_32 length;
@ -569,7 +580,8 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
if (png_ptr->transformations & PNG_FILLER)
png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined");
#endif
#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && !defined(PNG_READ_PACKSWAP_SUPPORTED)
#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \
!defined(PNG_READ_PACKSWAP_SUPPORTED)
if (png_ptr->transformations & PNG_PACKSWAP)
png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined");
#endif
@ -672,45 +684,20 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
png_error(png_ptr, "Invalid attempt to read row data");
png_ptr->zstream.next_out = png_ptr->row_buf;
png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
png_ptr->zstream.avail_out =
(uInt)(PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1);
do
{
if (!(png_ptr->zstream.avail_in))
{
png_uint_32 bytes_to_skip = 0;
while (!png_ptr->idat_size || bytes_to_skip != 0)
while (!png_ptr->idat_size)
{
png_crc_finish(png_ptr, bytes_to_skip);
bytes_to_skip = 0;
png_crc_finish(png_ptr, 0);
png_ptr->idat_size = png_read_chunk_header(png_ptr);
#if defined(PNG_READ_APNG_SUPPORTED)
if (png_ptr->num_frames_read == 0)
{
#endif
if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
png_error(png_ptr, "Not enough image data");
#if defined(PNG_READ_APNG_SUPPORTED)
}
else
{
if (!png_memcmp(png_ptr->chunk_name, png_IEND, 4))
png_error(png_ptr, "Not enough image data");
if (png_memcmp(png_ptr->chunk_name, png_fdAT, 4))
{
png_warning(png_ptr, "Skipped (ignored) a chunk "
"between APNG chunks");
bytes_to_skip = png_ptr->idat_size;
continue;
}
png_ensure_sequence_number(png_ptr, png_ptr->idat_size);
png_ptr->idat_size -= 4;
}
#endif
if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
png_error(png_ptr, "Not enough image data");
}
png_ptr->zstream.avail_in = (uInt)png_ptr->zbuf_size;
png_ptr->zstream.next_in = png_ptr->zbuf;
@ -1171,7 +1158,8 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
/* 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)
png_read_destroy(png_structp png_ptr, png_infop info_ptr,
png_infop end_info_ptr)
{
#ifdef PNG_SETJMP_SUPPORTED
jmp_buf tmp_jmp;

2
modules/libimg/png/pngrio.c
View File

@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)

52
modules/libimg/png/pngrtran.c
View File

@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -432,8 +432,10 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
png_ptr->palette_to_index[png_ptr->index_to_palette[j]]
= png_ptr->palette_to_index[num_new_palette];
png_ptr->index_to_palette[j] = (png_byte)num_new_palette;
png_ptr->palette_to_index[num_new_palette] = (png_byte)j;
png_ptr->index_to_palette[j] =
(png_byte)num_new_palette;
png_ptr->palette_to_index[num_new_palette] =
(png_byte)j;
}
if (num_new_palette <= maximum_colors)
break;
@ -502,7 +504,8 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
{
/* int dr = abs(ir - r); */
int dr = ((ir > r) ? ir - r : r - ir);
int index_r = (ir << (PNG_DITHER_BLUE_BITS + PNG_DITHER_GREEN_BITS));
int index_r = (ir << (PNG_DITHER_BLUE_BITS +
PNG_DITHER_GREEN_BITS));
for (ig = 0; ig < num_green; ig++)
{
@ -747,8 +750,9 @@ png_init_read_transformations(png_structp png_ptr)
png_debug(1, "in png_init_read_transformations");
{
#if defined(PNG_READ_BACKGROUND_SUPPORTED) || defined(PNG_READ_SHIFT_SUPPORTED) \
|| defined(PNG_READ_GAMMA_SUPPORTED)
#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
defined(PNG_READ_SHIFT_SUPPORTED) || \
defined(PNG_READ_GAMMA_SUPPORTED)
int color_type = png_ptr->color_type;
#endif
@ -886,11 +890,7 @@ png_init_read_transformations(png_structp png_ptr)
if ((png_ptr->transformations & (PNG_GAMMA | PNG_RGB_TO_GRAY)) &&
png_ptr->gamma != 0.0)
{
if (png_ptr->transformations & PNG_16_TO_8)
/* png_build_gamma_table(png_ptr, 8); */
png_build_gamma_table(png_ptr, png_ptr->bit_depth);
else
png_build_gamma_table(png_ptr, png_ptr->bit_depth);
png_build_gamma_table(png_ptr, png_ptr->bit_depth);
#ifdef PNG_READ_BACKGROUND_SUPPORTED
if (png_ptr->transformations & PNG_BACKGROUND)
@ -949,7 +949,8 @@ png_init_read_transformations(png_structp png_ptr)
back.red = (png_byte)(pow(
(double)png_ptr->background.red/255.0, gs) * 255.0 + .5);
back.green = (png_byte)(pow(
(double)png_ptr->background.green/255.0, gs) * 255.0 + .5);
(double)png_ptr->background.green/255.0, gs) * 255.0
+ .5);
back.blue = (png_byte)(pow(
(double)png_ptr->background.blue/255.0, gs) * 255.0 + .5);
}
@ -1361,7 +1362,8 @@ png_do_read_transformations(png_structp png_ptr)
if (png_ptr->transformations & PNG_RGB_TO_GRAY)
{
int rgb_error =
png_do_rgb_to_gray(png_ptr, &(png_ptr->row_info), png_ptr->row_buf + 1);
png_do_rgb_to_gray(png_ptr, &(png_ptr->row_info),
png_ptr->row_buf + 1);
if (rgb_error)
{
png_ptr->rgb_to_gray_status=1;
@ -2347,7 +2349,8 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
{
png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff) >>
png_ptr->gamma_shift][red>>8];
png_uint_16 green_1 = png_ptr->gamma_16_to_1[(green&0xff) >>
png_uint_16 green_1 =
png_ptr->gamma_16_to_1[(green&0xff) >>
png_ptr->gamma_shift][green>>8];
png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff) >>
png_ptr->gamma_shift][blue>>8];
@ -2443,13 +2446,14 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
else
{
png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff) >>
png_ptr->gamma_shift][red>>8];
png_uint_16 green_1 = png_ptr->gamma_16_to_1[(green&0xff) >>
png_ptr->gamma_shift][green>>8];
png_ptr->gamma_shift][red>>8];
png_uint_16 green_1 =
png_ptr->gamma_16_to_1[(green&0xff) >>
png_ptr->gamma_shift][green>>8];
png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff) >>
png_ptr->gamma_shift][blue>>8];
png_ptr->gamma_shift][blue>>8];
png_uint_16 gray16 = (png_uint_16)((rc * red_1
+ gc * green_1 + bc * blue_1)>>15);
+ gc * green_1 + bc * blue_1)>>15);
w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
png_ptr->gamma_shift][gray16 >> 8];
rgb_error |= 1;
@ -3379,10 +3383,10 @@ png_do_gamma(png_row_infop row_info, png_bytep row,
int d = *sp & 0x03;
*sp = (png_byte)(
((((int)gamma_table[a|(a>>2)|(a>>4)|(a>>6)]) ) & 0xc0)|
((((int)gamma_table[(b<<2)|b|(b>>2)|(b>>4)])>>2) & 0x30)|
((((int)gamma_table[(c<<4)|(c<<2)|c|(c>>2)])>>4) & 0x0c)|
((((int)gamma_table[(d<<6)|(d<<4)|(d<<2)|d])>>6) ));
((((int)gamma_table[a|(a>>2)|(a>>4)|(a>>6)]) ) & 0xc0)|
((((int)gamma_table[(b<<2)|b|(b>>2)|(b>>4)])>>2) & 0x30)|
((((int)gamma_table[(c<<4)|(c<<2)|c|(c>>2)])>>4) & 0x0c)|
((((int)gamma_table[(d<<6)|(d<<4)|(d<<2)|d])>>6) ));
sp++;
}
}
@ -3396,7 +3400,7 @@ png_do_gamma(png_row_infop row_info, png_bytep row,
int lsb = *sp & 0x0f;
*sp = (png_byte)((((int)gamma_table[msb | (msb >> 4)]) & 0xf0)
| (((int)gamma_table[(lsb << 4) | lsb]) >> 4));
| (((int)gamma_table[(lsb << 4) | lsb]) >> 4));
sp++;
}
}

390
modules/libimg/png/pngrutil.c
View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -201,6 +201,103 @@ png_crc_error(png_structp png_ptr)
#if defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_READ_iTXt_SUPPORTED) || \
defined(PNG_READ_iCCP_SUPPORTED)
/*
* Decompress trailing data in a chunk. The assumption is that chunkdata
* points at an allocated area holding the contents of a chunk with a
* trailing compressed part. What we get back is an allocated area
* holding the original prefix part and an uncompressed version of the
* trailing part (the malloc area passed in is freed).
*/
static png_size_t
png_inflate(png_structp png_ptr, const png_byte *data, png_size_t size,
png_bytep output, png_size_t output_size)
{
png_size_t count = 0;
png_ptr->zstream.next_in = (png_bytep)data; /* const_cast: VALID */
png_ptr->zstream.avail_in = size;
while (1)
{
int ret, avail;
/* Reset the output buffer each time round - we empty it
* after every inflate call.
*/
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = png_ptr->zbuf_size;
ret = inflate(&png_ptr->zstream, Z_NO_FLUSH);
avail = png_ptr->zbuf_size - png_ptr->zstream.avail_out;
/* First copy/count any new output - but only if we didn't
* get an error code.
*/
if ((ret == Z_OK || ret == Z_STREAM_END) && avail > 0)
{
if (output != 0 && output_size > count)
{
int copy = output_size - count;
if (avail < copy) copy = avail;
png_memcpy(output + count, png_ptr->zbuf, copy);
}
count += avail;
}
if (ret == Z_OK)
continue;
/* Termination conditions - always reset the zstream, it
* must be left in inflateInit state.
*/
png_ptr->zstream.avail_in = 0;
inflateReset(&png_ptr->zstream);
if (ret == Z_STREAM_END)
return count; /* NOTE: may be zero. */
/* Now handle the error codes - the API always returns 0
* and the error message is dumped into the uncompressed
* buffer if available.
*/
{
char *msg, umsg[52];
if (png_ptr->zstream.msg != 0)
msg = png_ptr->zstream.msg;
else
{
#ifdef PNG_STDIO_SUPPORTED
switch (ret)
{
case Z_BUF_ERROR:
msg = "Buffer error in compressed datastream in %s chunk";
break;
case Z_DATA_ERROR:
msg = "Data error in compressed datastream in %s chunk";
break;
default:
msg = "Incomplete compressed datastream in %s chunk";
break;
}
png_snprintf(umsg, sizeof umsg, msg, png_ptr->chunk_name);
msg = umsg;
#else
msg = "Damaged compressed datastream in chunk other than IDAT";
#endif
}
png_warning(png_ptr, msg);
}
/* 0 means an error - notice that this code simple ignores
* zero length compressed chunks as a result.
*/
return 0;
}
}
/*
* Decompress trailing data in a chunk. The assumption is that chunkdata
* points at an allocated area holding the contents of a chunk with a
@ -210,185 +307,101 @@ png_crc_error(png_structp png_ptr)
*/
void /* PRIVATE */
png_decompress_chunk(png_structp png_ptr, int comp_type,
png_size_t chunklength,
png_size_t prefix_size, png_size_t *newlength)
png_size_t chunklength,
png_size_t prefix_size, png_size_t *newlength)
{
static PNG_CONST char msg[] = "Error decoding compressed chunk";
png_charp text;
png_size_t text_size;
if (comp_type == PNG_COMPRESSION_TYPE_BASE)
/* The caller should guarantee this */
if (prefix_size > chunklength)
{
int ret = Z_OK;
png_ptr->zstream.next_in = (png_bytep)(png_ptr->chunkdata + prefix_size);
png_ptr->zstream.avail_in = (uInt)(chunklength - prefix_size);
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
text_size = 0;
text = NULL;
while (png_ptr->zstream.avail_in)
{
ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
if (ret != Z_OK && ret != Z_STREAM_END)
{
if (png_ptr->zstream.msg != NULL)
png_warning(png_ptr, png_ptr->zstream.msg);
else
png_warning(png_ptr, msg);
inflateReset(&png_ptr->zstream);
png_ptr->zstream.avail_in = 0;
if (text == NULL)
{
text_size = prefix_size + png_sizeof(msg) + 1;
text = (png_charp)png_malloc_warn(png_ptr, text_size);
if (text == NULL)
{
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_error(png_ptr, "Not enough memory to decompress chunk");
}
png_memcpy(text, png_ptr->chunkdata, prefix_size);
}
text[text_size - 1] = 0x00;
/* Copy what we can of the error message into the text chunk */
text_size = (png_size_t)(chunklength -
(text - png_ptr->chunkdata) - 1);
if (text_size > png_sizeof(msg))
text_size = png_sizeof(msg);
png_memcpy(text + prefix_size, msg, text_size);
break;
}
if (!png_ptr->zstream.avail_out || ret == Z_STREAM_END)
{
if (text == NULL)
{
text_size = prefix_size +
png_ptr->zbuf_size - png_ptr->zstream.avail_out;
text = (png_charp)png_malloc_warn(png_ptr, text_size + 1);
if (text == NULL)
{
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_error(png_ptr,
"Not enough memory to decompress chunk");
}
png_memcpy(text + prefix_size, png_ptr->zbuf,
text_size - prefix_size);
png_memcpy(text, png_ptr->chunkdata, prefix_size);
*(text + text_size) = 0x00;
}
else
{
png_charp tmp;
tmp = text;
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if ((png_ptr->user_chunk_cache_max != 0) &&
(--png_ptr->user_chunk_cache_max == 0))
{
png_warning(png_ptr, "No space in chunk cache");
text = NULL;
}
else
{
#endif
text = (png_charp)png_malloc_warn(png_ptr,
(png_size_t)(text_size +
png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
}
#endif
if (text == NULL)
{
png_free(png_ptr, tmp);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_error(png_ptr,
"Not enough memory to decompress chunk");
}
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) = 0x00;
}
if (ret == Z_STREAM_END)
break;
else
{
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
}
}
}
if (ret != Z_STREAM_END)
{
#ifdef PNG_STDIO_SUPPORTED
char umsg[52];
if (ret == Z_BUF_ERROR)
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,
"Incomplete compressed datastream in chunk other than IDAT");
#endif
text_size = prefix_size;
if (text == NULL)
{
text = (png_charp)png_malloc_warn(png_ptr, text_size+1);
if (text == NULL)
{
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_error(png_ptr, "Not enough memory for text");
}
png_memcpy(text, png_ptr->chunkdata, prefix_size);
}
*(text + text_size) = 0x00;
}
inflateReset(&png_ptr->zstream);
png_ptr->zstream.avail_in = 0;
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = text;
*newlength=text_size;
/* The recovery is to delete the chunk. */
png_warning(png_ptr, "invalid chunklength");
prefix_size = 0; /* To delete everything */
}
else if (comp_type == PNG_COMPRESSION_TYPE_BASE)
{
png_size_t expanded_size = png_inflate(png_ptr,
(png_bytep)(png_ptr->chunkdata + prefix_size),
chunklength - prefix_size,
0/*output*/, 0/*output size*/);
/* Now check the limits on this chunk - if the limit fails the
* compressed data will be removed, the prefix will remain.
*/
if (prefix_size + expanded_size >= 3999999L)
png_warning(png_ptr, "Exceeded size limit while expanding chunk");
/* If the size is zero either there was an error and a message
* has already been output (warning) or the size really is zero
* and we have nothing to do - the code will exit through the
* error case below.
*/
else if (expanded_size > 0)
{
/* Success (maybe) - really uncompress the chunk. */
png_size_t new_size = 0;
png_charp text = png_malloc_warn(png_ptr,
prefix_size + expanded_size + 1);
if (text != NULL)
{
png_memcpy(text, png_ptr->chunkdata, prefix_size);
new_size = png_inflate(png_ptr,
(png_bytep)(png_ptr->chunkdata + prefix_size),
chunklength - prefix_size,
(png_bytep)(text + prefix_size), expanded_size);
text[prefix_size + expanded_size] = 0; /* just in case */
if (new_size == expanded_size)
{
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = text;
*newlength = prefix_size + expanded_size;
return; /* The success return! */
}
png_warning(png_ptr, "png_inflate logic error");
png_free(png_ptr, text);
}
else
png_warning(png_ptr, "Not enough memory to decompress chunk");
}
}
else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
{
#ifdef PNG_STDIO_SUPPORTED
char umsg[50];
png_snprintf(umsg, 50, "Unknown zTXt compression type %d", comp_type);
#ifdef PNG_STDIO_SUPPORTED
png_snprintf(umsg, sizeof umsg, "Unknown zTXt compression type %d", comp_type);
png_warning(png_ptr, umsg);
#else
png_warning(png_ptr, "Unknown zTXt compression type");
#endif
*(png_ptr->chunkdata + prefix_size) = 0x00;
*newlength = prefix_size;
/* The recovery is to simply drop the data. */
}
/* Generic error return - leave the prefix, delete the compressed
* data, reallocate the chunkdata to remove the potentially large
* amount of compressed data.
*/
{
png_charp text = png_malloc_warn(png_ptr, prefix_size + 1);
if (text != NULL)
{
if (prefix_size > 0)
png_memcpy(text, png_ptr->chunkdata, prefix_size);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = text;
/* This is an extra zero in the 'uncompressed' part. */
*(png_ptr->chunkdata + prefix_size) = 0x00;
}
/* Ignore a malloc error here - it is safe. */
}
*newlength = prefix_size;
}
#endif
@ -1140,7 +1153,7 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_sPLT");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
#ifdef PNG_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
@ -1190,7 +1203,8 @@ 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++)
for (entry_start = (png_bytep)png_ptr->chunkdata; *entry_start;
entry_start++)
/* Empty loop to find end of name */ ;
++entry_start;
@ -1944,7 +1958,7 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_tEXt");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
#ifdef PNG_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
@ -2046,7 +2060,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_zTXt");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
#ifdef PNG_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
@ -2167,7 +2181,7 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_iTXt");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
#ifdef PNG_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
@ -2473,7 +2487,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_unknown");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
#ifdef PNG_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
@ -2528,7 +2542,8 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_memcpy((png_charp)png_ptr->unknown_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.name[png_sizeof(png_ptr->unknown_chunk.name)-1]
= '\0';
png_ptr->unknown_chunk.size = (png_size_t)length;
if (length == 0)
png_ptr->unknown_chunk.data = NULL;
@ -3000,7 +3015,8 @@ png_do_read_interlace(png_structp png_ptr)
default:
{
png_size_t pixel_bytes = (row_info->pixel_depth >> 3);
png_bytep sp = row + (png_size_t)(row_info->width - 1) * pixel_bytes;
png_bytep sp = row + (png_size_t)(row_info->width - 1)
* pixel_bytes;
png_bytep dp = row + (png_size_t)(final_width - 1) * pixel_bytes;
int jstop = png_pass_inc[pass];
@ -3195,9 +3211,6 @@ png_read_finish_row(png_structp png_ptr)
png_pass_start[png_ptr->pass]) /
png_pass_inc[png_ptr->pass];
png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1;
if (!(png_ptr->transformations & PNG_INTERLACE))
{
png_ptr->num_rows = (png_ptr->height +
@ -3322,16 +3335,12 @@ png_read_start_row(png_structp png_ptr)
png_pass_inc[png_ptr->pass] - 1 -
png_pass_start[png_ptr->pass]) /
png_pass_inc[png_ptr->pass];
png_ptr->irowbytes =
PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1;
}
else
#endif /* PNG_READ_INTERLACING_SUPPORTED */
{
png_ptr->num_rows = png_ptr->height;
png_ptr->iwidth = png_ptr->width;
png_ptr->irowbytes = png_ptr->rowbytes + 1;
}
max_pixel_depth = png_ptr->pixel_depth;
@ -3496,7 +3505,8 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
png_debug1(3, "iwidth = %lu,", png_ptr->iwidth);
png_debug1(3, "num_rows = %lu,", png_ptr->num_rows);
png_debug1(3, "rowbytes = %lu,", png_ptr->rowbytes);
png_debug1(3, "irowbytes = %lu", png_ptr->irowbytes);
png_debug1(3, "irowbytes = %lu",
PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1);
png_ptr->flags |= PNG_FLAG_ROW_INIT;
}
@ -3529,7 +3539,6 @@ png_read_reinit(png_structp png_ptr, png_infop info_ptr)
void /* PRIVATE */
png_progressive_read_reset(png_structp png_ptr)
{
#ifdef PNG_USE_LOCAL_ARRAYS
/* start of interlace block */
const int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
@ -3541,8 +3550,6 @@ png_progressive_read_reset(png_structp png_ptr)
/* offset to next interlace block in the y direction */
const int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
#endif
png_uint_32 row_bytes;
if (png_ptr->interlaced)
{
@ -3556,19 +3563,11 @@ png_progressive_read_reset(png_structp png_ptr)
png_pass_inc[png_ptr->pass] - 1 -
png_pass_start[png_ptr->pass]) /
png_pass_inc[png_ptr->pass];
row_bytes = PNG_ROWBYTES(png_ptr->pixel_depth,png_ptr->iwidth) + 1;
png_ptr->irowbytes = (png_size_t)row_bytes;
if((png_uint_32)png_ptr->irowbytes != row_bytes)
png_error(png_ptr, "png_progressive_read_reset(): Rowbytes "
"overflow");
}
else
{
png_ptr->num_rows = png_ptr->height;
png_ptr->iwidth = png_ptr->width;
png_ptr->irowbytes = png_ptr->rowbytes + 1;
}
png_ptr->flags &= ~PNG_FLAG_ZLIB_FINISHED;
if (inflateReset(&(png_ptr->zstream)) != Z_OK)
@ -3576,7 +3575,8 @@ png_progressive_read_reset(png_structp png_ptr)
png_ptr->zstream.avail_in = 0;
png_ptr->zstream.next_in = 0;
png_ptr->zstream.next_out = png_ptr->row_buf;
png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
png_ptr->zstream.avail_out = (uInt)PNG_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1;
}
#endif /* PNG_READ_APNG_SUPPORTED */
#endif /* PNG_READ_SUPPORTED */

24
modules/libimg/png/pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -1238,7 +1238,6 @@ png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
}
#endif
#ifdef PNG_WRITE_SUPPORTED
void PNGAPI
png_set_compression_buffer_size(png_structp png_ptr,
png_size_t size)
@ -1251,7 +1250,6 @@ png_set_compression_buffer_size(png_structp png_ptr,
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
}
#endif
void PNGAPI
png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
@ -1277,18 +1275,24 @@ png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
png_ptr->user_width_max = user_width_max;
png_ptr->user_height_max = user_height_max;
}
/* This function was added to libpng 1.4.0 */
void PNGAPI
png_set_chunk_cache_max (png_structp png_ptr,
png_uint_32 user_chunk_cache_max)
{
if (png_ptr == NULL)
return;
png_ptr->user_chunk_cache_max = user_chunk_cache_max;
if (user_chunk_cache_max == 0x7fffffffL) /* Unlimited */
png_ptr->user_chunk_cache_max = 0;
else
png_ptr->user_chunk_cache_max = user_chunk_cache_max + 1;
if (png_ptr)
png_ptr->user_chunk_cache_max = user_chunk_cache_max;
}
/* This function was added to libpng 1.4.1 */
void PNGAPI
png_set_chunk_malloc_max (png_structp png_ptr,
png_alloc_size_t user_chunk_malloc_max)
{
if (png_ptr)
png_ptr->user_chunk_malloc_max =
(png_size_t)user_chunk_malloc_max;
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */

11
modules/libimg/png/pngwrite.c
View File

@ -38,7 +38,8 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
/* Write PNG signature */
png_write_sig(png_ptr);
#ifdef PNG_MNG_FEATURES_SUPPORTED
if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&(png_ptr->mng_features_permitted))
if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) && \
(png_ptr->mng_features_permitted))
{
png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
png_ptr->mng_features_permitted = 0;
@ -688,9 +689,11 @@ png_write_row(png_structp png_ptr, png_bytep row)
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 !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");
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)
@ -944,7 +947,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
{
png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
if (png_ptr->num_chunk_list)
{
png_free(png_ptr, png_ptr->chunk_list);

5
modules/libimg/png/pngwtran.c
View File

@ -1,7 +1,7 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -30,7 +30,8 @@ png_do_write_transformations(png_structp png_ptr)
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
if (png_ptr->transformations & PNG_USER_TRANSFORM)
if (png_ptr->write_user_transform_fn != NULL)
(*(png_ptr->write_user_transform_fn)) /* User write transform function */
(*(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 */

13
modules/libimg/png/pngwutil.c
View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 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.)
@ -436,7 +436,8 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
case 4:
case 8:
case 16: png_ptr->channels = 1; break;
default: png_error(png_ptr, "Invalid bit depth for grayscale image");
default: png_error(png_ptr,
"Invalid bit depth for grayscale image");
}
break;
case PNG_COLOR_TYPE_RGB:
@ -644,7 +645,9 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
png_write_chunk_data(png_ptr, buf, (png_size_t)3);
}
#else
/* This is a little slower but some buggy compilers need to do this instead */
/* This is a little slower but some buggy compilers need to do this
* instead
*/
pal_ptr=palette;
for (i = 0; i < num_pal; i++)
{
@ -1743,9 +1746,7 @@ void /* PRIVATE */
png_write_acTL(png_structp png_ptr,
png_uint_32 num_frames, png_uint_32 num_plays)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_acTL;
#endif
png_byte data[16];
png_debug(1, "in png_write_acTL");
@ -1767,9 +1768,7 @@ png_write_fcTL(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
png_byte blend_op)
{
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_fcTL;
#endif
png_byte data[26];
png_debug(1, "in png_write_fcTL");

102
modules/libpr0n/decoders/png/nsPNGDecoder.cpp
View File

@ -63,13 +63,19 @@
static void PNGAPI info_callback(png_structp png_ptr, png_infop info_ptr);
static void PNGAPI row_callback(png_structp png_ptr, png_bytep new_row,
png_uint_32 row_num, int pass);
#ifdef PNG_APNG_SUPPORTED
static void PNGAPI frame_info_callback(png_structp png_ptr,
png_uint_32 frame_num);
#endif
static void PNGAPI end_callback(png_structp png_ptr, png_infop info_ptr);
static void PNGAPI error_callback(png_structp png_ptr,
png_const_charp error_msg);
static void PNGAPI warning_callback(png_structp png_ptr,
png_const_charp warning_msg);
#if defined(PNG_USER_MEM_SUPPORTED) && !defined(PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED)
static png_voidp PNGAPI malloc_callback(png_structp png_ptr,
png_alloc_size_t size);
#endif
#ifdef PR_LOGGING
static PRLogModuleInfo *gPNGLog = PR_NewLogModule("PNGDecoder");
@ -245,7 +251,7 @@ NS_IMETHODIMP nsPNGDecoder::Init(imgIContainer *aImage,
imgIDecoderObserver *aObserver,
PRUint32 aFlags)
{
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
static png_byte color_chunks[]=
{ 99, 72, 82, 77, '\0', /* cHRM */
105, 67, 67, 80, '\0'}; /* iCCP */
@ -285,8 +291,20 @@ NS_IMETHODIMP nsPNGDecoder::Init(imgIContainer *aImage,
/* Initialize the container's source image header. */
/* Always decode to 24 bit pixdepth */
mPNG = png_create_read_struct(PNG_LIBPNG_VER_STRING,
NULL, error_callback, warning_callback);
#if defined(PNG_USER_MEM_SUPPORTED) && !defined(PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED)
if (gfxPlatform::GetCMSMode() != eCMSMode_Off) {
mPNG = png_create_read_struct_2(PNG_LIBPNG_VER_STRING,
NULL,
error_callback,
warning_callback,
NULL,
malloc_callback,
NULL);
} else
#endif
mPNG = png_create_read_struct(PNG_LIBPNG_VER_STRING,
NULL, error_callback,
warning_callback);
if (!mPNG)
return NS_ERROR_OUT_OF_MEMORY;
@ -296,13 +314,27 @@ NS_IMETHODIMP nsPNGDecoder::Init(imgIContainer *aImage,
return NS_ERROR_OUT_OF_MEMORY;
}
#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
/* Ignore unused chunks */
if (gfxPlatform::GetCMSMode() == eCMSMode_Off)
png_set_keep_unknown_chunks(mPNG, 1, color_chunks, 2);
png_set_keep_unknown_chunks(mPNG, 1, unused_chunks,
(int)sizeof(unused_chunks)/5);
(int)sizeof(unused_chunks)/5);
#endif
#ifndef MOZPNGCONF_H
# if defined(PNG_WRITE_SUPPORTED)
if (gfxPlatform::GetCMSMode() != eCMSMode_Off) {
/* Increase speed of decompressing large iCCP chunks (default buffer
size is 8192) */
png_set_compression_buffer_size(mPNG, (png_size_t)32768L);
}
# if defined PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
png_set_user_chunk_malloc_max(mPNG, 4000000L);
# endif
# endif
#endif
/* use this as libpng "progressive pointer" (retrieve in callbacks) */
@ -721,6 +753,25 @@ info_callback(png_structp png_ptr, png_infop info_ptr)
}
}
#if defined PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
/* Revert to the default memory limit */
png_set_user_chunk_malloc_max(decoder->mPNG, PNG_USER_CHUNK_MALLOC_MAX);
#endif
#if defined(PNG_USER_MEM_SUPPORTED) && !defined(PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED)
/* Revert to the default memory allocator */
if (gfxPlatform::GetCMSMode() != eCMSMode_Off)
png_set_mem_fn(decoder->mPNG, NULL, NULL, NULL);
#endif
#ifndef MOZPNGCONF_H
/* Revert to the default zlib buffer size */
# if defined(PNG_WRITE_SUPPORTED)
if (gfxPlatform::GetCMSMode() != eCMSMode_Off) {
png_set_compression_buffer_size(decoder->mPNG, (png_size_t)8192);
}
# endif
#endif
/* Reject any ancillary chunk after IDAT with a bad CRC (bug #397593).
* It would be better to show the default frame (if one has already been
* successfully decoded) before bailing, but it's simpler to just bail
@ -936,3 +987,44 @@ warning_callback(png_structp png_ptr, png_const_charp warning_msg)
{
PR_LOG(gPNGLog, PR_LOG_WARNING, ("libpng warning: %s\n", warning_msg));
}
#if defined(PNG_USER_MEM_SUPPORTED) && !defined(PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED)
/* Replacement libpng memory allocator that has a 4MB limit */
png_voidp malloc_callback(png_structp png_ptr, png_alloc_size_t size) {
png_voidp ret;
if (png_ptr == NULL || size == 0)
return (png_voidp) (NULL);
#ifdef PNG_MAX_MALLOC_64K
if (size > (png_uint_32)65536L) {
return NULL;
}
#endif
if (size > (png_uint_32)4000000L) {
return NULL;
}
#if defined(__TURBOC__) && !defined(__FLAT__)
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);
# else
if (size != (size_t)size)
ret = NULL;
else
ret = malloc((size_t)size);
# endif
#endif
return (ret);
}
#endif /* PNG_USER_MEM_SUPPORTED */