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libpng: Update to upstream 1.6.38

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(cherry picked from commit 0f2dc5c5e1)
This commit is contained in:
Rémi Verschelde 2022-09-16 21:09:44 +02:00
parent 5c81213231
commit 00e686b8c1
20 changed files with 129 additions and 1376 deletions
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2
thirdparty/README.md vendored
View file

@ -186,7 +186,7 @@ Files extracted from upstream source:
## libpng
- Upstream: http://libpng.org/pub/png/libpng.html
- Version: 1.6.37 (a40189cf881e9f0db80511c382292a5604c3c3d1, 2019)
- Version: 1.6.38 (0a158f3506502dfa23edfc42790dfaed82efba17, 2022)
- License: libpng/zlib
Files extracted from upstream source:

4
thirdparty/libpng/LICENSE vendored
View file

@ -4,8 +4,8 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE
PNG Reference Library License version 2
---------------------------------------
* Copyright (c) 1995-2019 The PNG Reference Library Authors.
* Copyright (c) 2018-2019 Cosmin Truta.
* Copyright (c) 1995-2022 The PNG Reference Library Authors.
* Copyright (c) 2018-2022 Cosmin Truta.
* Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
* Copyright (c) 1996-1997 Andreas Dilger.
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.

28
thirdparty/libpng/arm/arm_init.c vendored
View file

@ -1,7 +1,7 @@
/* arm_init.c - NEON optimised filter functions
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2014,2016 Glenn Randers-Pehrson
* Written by Mans Rullgard, 2011.
*
@ -10,9 +10,7 @@
* and license in png.h
*/
/* Below, after checking __linux__, various non-C90 POSIX 1003.1 functions are
* called.
*/
/* This module requires POSIX 1003.1 functions. */
#define _POSIX_SOURCE 1
#include "../pngpriv.h"
@ -33,21 +31,23 @@
* has partial support is contrib/arm-neon/linux.c - a generic Linux
* implementation which reads /proc/cpufino.
*/
#include <signal.h> /* for sig_atomic_t */
#ifndef PNG_ARM_NEON_FILE
# ifdef __linux__
# define PNG_ARM_NEON_FILE "contrib/arm-neon/linux.c"
# if defined(__aarch64__) || defined(_M_ARM64)
/* ARM Neon is expected to be unconditionally available on ARM64. */
# error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on this platform"
# elif defined(__linux__)
# define PNG_ARM_NEON_FILE "contrib/arm-neon/linux.c"
# else
# error "No support for run-time ARM Neon checking; use compile-time options"
# endif
#endif
#ifdef PNG_ARM_NEON_FILE
#include <signal.h> /* for sig_atomic_t */
static int png_have_neon(png_structp png_ptr);
#include PNG_ARM_NEON_FILE
#else /* PNG_ARM_NEON_FILE */
# error "PNG_ARM_NEON_FILE undefined: no support for run-time ARM NEON checks"
#endif /* PNG_ARM_NEON_FILE */
#ifdef PNG_ARM_NEON_FILE
# include PNG_ARM_NEON_FILE
#endif
#endif /* PNG_ARM_NEON_CHECK_SUPPORTED */
#ifndef PNG_ALIGNED_MEMORY_SUPPORTED

2
thirdparty/libpng/arm/filter_neon_intrinsics.c vendored
View file

@ -18,7 +18,7 @@
/* This code requires -mfpu=neon on the command line: */
#if PNG_ARM_NEON_IMPLEMENTATION == 1 /* intrinsics code from pngpriv.h */
#if defined(_MSC_VER) && defined(_M_ARM64)
#if defined(_MSC_VER) && !defined(__clang__) && defined(_M_ARM64)
# include <arm64_neon.h>
#else
# include <arm_neon.h>

14
thirdparty/libpng/arm/palette_neon_intrinsics.c vendored
View file

@ -14,7 +14,7 @@
#if PNG_ARM_NEON_IMPLEMENTATION == 1
#if defined(_MSC_VER) && defined(_M_ARM64)
#if defined(_MSC_VER) && !defined(__clang__) && defined(_M_ARM64)
# include <arm64_neon.h>
#else
# include <arm_neon.h>
@ -30,8 +30,6 @@ png_riffle_palette_neon(png_structrp png_ptr)
int num_trans = png_ptr->num_trans;
int i;
png_debug(1, "in png_riffle_palette_neon");
/* Initially black, opaque. */
uint8x16x4_t w = {{
vdupq_n_u8(0x00),
@ -40,6 +38,8 @@ png_riffle_palette_neon(png_structrp png_ptr)
vdupq_n_u8(0xff),
}};
png_debug(1, "in png_riffle_palette_neon");
/* First, riffle the RGB colours into an RGBA8 palette.
* The alpha component is set to opaque for now.
*/
@ -65,11 +65,12 @@ png_do_expand_palette_rgba8_neon(png_structrp png_ptr, png_row_infop row_info,
png_uint_32 row_width = row_info->width;
const png_uint_32 *riffled_palette =
(const png_uint_32 *)png_ptr->riffled_palette;
const png_int_32 pixels_per_chunk = 4;
int i;
const png_uint_32 pixels_per_chunk = 4;
png_uint_32 i;
png_debug(1, "in png_do_expand_palette_rgba8_neon");
PNG_UNUSED(row)
if (row_width < pixels_per_chunk)
return 0;
@ -109,10 +110,11 @@ png_do_expand_palette_rgb8_neon(png_structrp png_ptr, png_row_infop row_info,
png_uint_32 row_width = row_info->width;
png_const_bytep palette = (png_const_bytep)png_ptr->palette;
const png_uint_32 pixels_per_chunk = 8;
int i;
png_uint_32 i;
png_debug(1, "in png_do_expand_palette_rgb8_neon");
PNG_UNUSED(row)
if (row_width <= pixels_per_chunk)
return 0;

14
thirdparty/libpng/png.c vendored
View file

@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -14,7 +14,7 @@
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_37 Your_png_h_is_not_version_1_6_37;
typedef png_libpng_version_1_6_38 Your_png_h_is_not_version_1_6_38;
#ifdef __GNUC__
/* The version tests may need to be added to, but the problem warning has
@ -720,7 +720,7 @@ png_init_io(png_structrp png_ptr, png_FILE_p fp)
*
* Where UNSIGNED_MAX is the appropriate maximum unsigned value, so when the
* negative integral value is added the result will be an unsigned value
* correspnding to the 2's complement representation.
* corresponding to the 2's complement representation.
*/
void PNGAPI
png_save_int_32(png_bytep buf, png_int_32 i)
@ -815,8 +815,8 @@ png_get_copyright(png_const_structrp png_ptr)
return PNG_STRING_COPYRIGHT
#else
return PNG_STRING_NEWLINE \
"libpng version 1.6.37" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2019 Cosmin Truta" PNG_STRING_NEWLINE \
"libpng version 1.6.38" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2022 Cosmin Truta" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
@ -1843,12 +1843,12 @@ png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
# ifdef PNG_WARNINGS_SUPPORTED
else
{
char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114*/
char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114 */
pos = png_safecat(message, (sizeof message), pos,
png_format_number(number, number+(sizeof number),
PNG_NUMBER_FORMAT_x, value));
pos = png_safecat(message, (sizeof message), pos, "h: "); /*+2 = 116*/
pos = png_safecat(message, (sizeof message), pos, "h: "); /* +2 = 116 */
}
# endif
/* The 'reason' is an arbitrary message, allow +79 maximum 195 */

121
thirdparty/libpng/png.h vendored
View file

@ -1,9 +1,9 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.37 - April 14, 2019
* libpng version 1.6.38 - September 14, 2022
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -15,7 +15,7 @@
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.35, July 2018:
* Glenn Randers-Pehrson
* libpng versions 1.6.36, December 2018, through 1.6.37, April 2019:
* libpng versions 1.6.36, December 2018, through 1.6.38, September 2022:
* Cosmin Truta
* See also "Contributing Authors", below.
*/
@ -27,8 +27,8 @@
* PNG Reference Library License version 2
* ---------------------------------------
*
* * Copyright (c) 1995-2019 The PNG Reference Library Authors.
* * Copyright (c) 2018-2019 Cosmin Truta.
* * Copyright (c) 1995-2022 The PNG Reference Library Authors.
* * Copyright (c) 2018-2022 Cosmin Truta.
* * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
* * Copyright (c) 1996-1997 Andreas Dilger.
* * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -239,7 +239,7 @@
* ...
* 1.5.30 15 10530 15.so.15.30[.0]
* ...
* 1.6.37 16 10637 16.so.16.37[.0]
* 1.6.38 16 10638 16.so.16.38[.0]
*
* Henceforth the source version will match the shared-library major and
* minor numbers; the shared-library major version number will be used for
@ -278,8 +278,8 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.37"
#define PNG_HEADER_VERSION_STRING " libpng version 1.6.37 - April 14, 2019\n"
#define PNG_LIBPNG_VER_STRING "1.6.38"
#define PNG_HEADER_VERSION_STRING " libpng version 1.6.38 - September 14, 2022\n"
#define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16
@ -287,7 +287,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 6
#define PNG_LIBPNG_VER_RELEASE 37
#define PNG_LIBPNG_VER_RELEASE 38
/* This should be zero for a public release, or non-zero for a
* development version. [Deprecated]
@ -318,7 +318,7 @@
* From version 1.0.1 it is:
* XXYYZZ, where XX=major, YY=minor, ZZ=release
*/
#define PNG_LIBPNG_VER 10637 /* 1.6.37 */
#define PNG_LIBPNG_VER 10638 /* 1.6.38 */
/* Library configuration: these options cannot be changed after
* the library has been built.
@ -330,10 +330,6 @@
# include "pnglibconf.h"
#endif
#define PNG_APNG_SUPPORTED
#define PNG_READ_APNG_SUPPORTED
#define PNG_WRITE_APNG_SUPPORTED
#ifndef PNG_VERSION_INFO_ONLY
/* Machine specific configuration. */
# include "pngconf.h"
@ -429,21 +425,10 @@ extern "C" {
* See pngconf.h for base types that vary by machine/system
*/
#ifdef PNG_APNG_SUPPORTED
/* dispose_op flags from inside fcTL */
#define PNG_DISPOSE_OP_NONE 0x00U
#define PNG_DISPOSE_OP_BACKGROUND 0x01U
#define PNG_DISPOSE_OP_PREVIOUS 0x02U
/* blend_op flags from inside fcTL */
#define PNG_BLEND_OP_SOURCE 0x00U
#define PNG_BLEND_OP_OVER 0x01U
#endif /* PNG_APNG_SUPPORTED */
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
typedef char* png_libpng_version_1_6_37;
typedef char* png_libpng_version_1_6_38;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
*
@ -761,10 +746,6 @@ typedef png_unknown_chunk * * png_unknown_chunkpp;
#define PNG_INFO_sCAL 0x4000U /* ESR, 1.0.6 */
#define PNG_INFO_IDAT 0x8000U /* ESR, 1.0.6 */
#define PNG_INFO_eXIf 0x10000U /* GR-P, 1.6.31 */
#ifdef PNG_APNG_SUPPORTED
#define PNG_INFO_acTL 0x20000U
#define PNG_INFO_fcTL 0x40000U
#endif
/* This is used for the transformation routines, as some of them
* change these values for the row. It also should enable using
@ -802,10 +783,6 @@ typedef PNG_CALLBACK(void, *png_write_status_ptr, (png_structp, png_uint_32,
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop));
typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop));
#ifdef PNG_APNG_SUPPORTED
typedef PNG_CALLBACK(void, *png_progressive_frame_ptr, (png_structp,
png_uint_32));
#endif
/* The following callback receives png_uint_32 row_number, int pass for the
* png_bytep data of the row. When transforming an interlaced image the
@ -1469,7 +1446,7 @@ PNG_EXPORT(66, void, png_set_crc_action, (png_structrp png_ptr, int crit_action,
* mainly useful for testing, as the defaults should work with most users.
* Those users who are tight on memory or want faster performance at the
* expense of compression can modify them. See the compression library
* header file (zlib.h) for an explination of the compression functions.
* header file (zlib.h) for an explanation of the compression functions.
*/
/* Set the filtering method(s) used by libpng. Currently, the only valid
@ -1524,7 +1501,7 @@ PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
* 0 - 9, corresponding directly to the zlib compression levels 0 - 9
* (0 - no compression, 9 - "maximal" compression). Note that tests have
* shown that zlib compression levels 3-6 usually perform as well as level 9
* for PNG images, and do considerably fewer caclulations. In the future,
* for PNG images, and do considerably fewer calculations. In the future,
* these values may not correspond directly to the zlib compression levels.
*/
#ifdef PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED
@ -3249,74 +3226,6 @@ PNG_EXPORT(244, int, png_set_option, (png_structrp png_ptr, int option,
/*******************************************************************************
* END OF HARDWARE AND SOFTWARE OPTIONS
******************************************************************************/
#ifdef PNG_APNG_SUPPORTED
PNG_EXPORT(250, png_uint_32, png_get_acTL, (png_structp png_ptr,
png_infop info_ptr, png_uint_32 *num_frames, png_uint_32 *num_plays));
PNG_EXPORT(251, png_uint_32, png_set_acTL, (png_structp png_ptr,
png_infop info_ptr, png_uint_32 num_frames, png_uint_32 num_plays));
PNG_EXPORT(252, png_uint_32, png_get_num_frames, (png_structp png_ptr,
png_infop info_ptr));
PNG_EXPORT(253, png_uint_32, png_get_num_plays, (png_structp png_ptr,
png_infop info_ptr));
PNG_EXPORT(254, png_uint_32, png_get_next_frame_fcTL,
(png_structp png_ptr, png_infop info_ptr, png_uint_32 *width,
png_uint_32 *height, png_uint_32 *x_offset, png_uint_32 *y_offset,
png_uint_16 *delay_num, png_uint_16 *delay_den, png_byte *dispose_op,
png_byte *blend_op));
PNG_EXPORT(255, png_uint_32, png_set_next_frame_fcTL,
(png_structp png_ptr, png_infop info_ptr, png_uint_32 width,
png_uint_32 height, png_uint_32 x_offset, png_uint_32 y_offset,
png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
png_byte blend_op));
PNG_EXPORT(256, png_uint_32, png_get_next_frame_width,
(png_structp png_ptr, png_infop info_ptr));
PNG_EXPORT(257, png_uint_32, png_get_next_frame_height,
(png_structp png_ptr, png_infop info_ptr));
PNG_EXPORT(258, png_uint_32, png_get_next_frame_x_offset,
(png_structp png_ptr, png_infop info_ptr));
PNG_EXPORT(259, png_uint_32, png_get_next_frame_y_offset,
(png_structp png_ptr, png_infop info_ptr));
PNG_EXPORT(260, png_uint_16, png_get_next_frame_delay_num,
(png_structp png_ptr, png_infop info_ptr));
PNG_EXPORT(261, png_uint_16, png_get_next_frame_delay_den,
(png_structp png_ptr, png_infop info_ptr));
PNG_EXPORT(262, png_byte, png_get_next_frame_dispose_op,
(png_structp png_ptr, png_infop info_ptr));
PNG_EXPORT(263, png_byte, png_get_next_frame_blend_op,
(png_structp png_ptr, png_infop info_ptr));
PNG_EXPORT(264, png_byte, png_get_first_frame_is_hidden,
(png_structp png_ptr, png_infop info_ptr));
PNG_EXPORT(265, png_uint_32, png_set_first_frame_is_hidden,
(png_structp png_ptr, png_infop info_ptr, png_byte is_hidden));
#ifdef PNG_READ_APNG_SUPPORTED
PNG_EXPORT(266, void, png_read_frame_head, (png_structp png_ptr,
png_infop info_ptr));
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
PNG_EXPORT(267, void, png_set_progressive_frame_fn, (png_structp png_ptr,
png_progressive_frame_ptr frame_info_fn,
png_progressive_frame_ptr frame_end_fn));
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#endif /* PNG_READ_APNG_SUPPORTED */
#ifdef PNG_WRITE_APNG_SUPPORTED
PNG_EXPORT(268, void, png_write_frame_head, (png_structp png_ptr,
png_infop info_ptr, png_bytepp row_pointers,
png_uint_32 width, png_uint_32 height,
png_uint_32 x_offset, png_uint_32 y_offset,
png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
png_byte blend_op));
PNG_EXPORT(269, void, png_write_frame_tail, (png_structp png_ptr,
png_infop info_ptr));
#endif /* PNG_WRITE_APNG_SUPPORTED */
#endif /* PNG_APNG_SUPPORTED */
/* Maintainer: Put new public prototypes here ^, in libpng.3, in project
* defs, and in scripts/symbols.def.
@ -3326,11 +3235,7 @@ PNG_EXPORT(269, void, png_write_frame_tail, (png_structp png_ptr,
* one to use is one more than this.)
*/
#ifdef PNG_EXPORT_LAST_ORDINAL
#ifdef PNG_APNG_SUPPORTED
PNG_EXPORT_LAST_ORDINAL(269);
#else
PNG_EXPORT_LAST_ORDINAL(249);
#endif /* PNG_APNG_SUPPORTED */
#endif
#ifdef __cplusplus

8
thirdparty/libpng/pngconf.h vendored
View file

@ -1,9 +1,9 @@
/* pngconf.h - machine-configurable file for libpng
*
* libpng version 1.6.37
* libpng version 1.6.38
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -180,8 +180,8 @@
* compiler-specific macros to the values required to change the calling
* conventions of the various functions.
*/
#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
#if defined(_WIN32) || defined(__WIN32__) || defined(__NT__) || \
defined(__CYGWIN__)
/* Windows system (DOS doesn't support DLLs). Includes builds under Cygwin or
* MinGW on any architecture currently supported by Windows. Also includes
* Watcom builds but these need special treatment because they are not

176
thirdparty/libpng/pngget.c vendored
View file

@ -1151,7 +1151,7 @@ png_get_unknown_chunks(png_const_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
png_byte PNGAPI
png_get_rgb_to_gray_status (png_const_structrp png_ptr)
png_get_rgb_to_gray_status(png_const_structrp png_ptr)
{
return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0);
}
@ -1192,27 +1192,27 @@ png_get_compression_buffer_size(png_const_structrp png_ptr)
/* 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_const_structrp png_ptr)
png_get_user_width_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_width_max : 0);
}
png_uint_32 PNGAPI
png_get_user_height_max (png_const_structrp png_ptr)
png_get_user_height_max(png_const_structrp 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_const_structrp png_ptr)
png_get_chunk_cache_max(png_const_structrp png_ptr)
{
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_const_structrp png_ptr)
png_get_chunk_malloc_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_chunk_malloc_max : 0);
}
@ -1221,13 +1221,13 @@ png_get_chunk_malloc_max (png_const_structrp png_ptr)
/* These functions were added to libpng 1.4.0 */
#ifdef PNG_IO_STATE_SUPPORTED
png_uint_32 PNGAPI
png_get_io_state (png_const_structrp png_ptr)
png_get_io_state(png_const_structrp png_ptr)
{
return png_ptr->io_state;
}
png_uint_32 PNGAPI
png_get_io_chunk_type (png_const_structrp png_ptr)
png_get_io_chunk_type(png_const_structrp png_ptr)
{
return png_ptr->chunk_name;
}
@ -1246,166 +1246,4 @@ png_get_palette_max(png_const_structp png_ptr, png_const_infop info_ptr)
# endif
#endif
#ifdef PNG_APNG_SUPPORTED
png_uint_32 PNGAPI
png_get_acTL(png_structp png_ptr, png_infop info_ptr,
png_uint_32 *num_frames, png_uint_32 *num_plays)
{
png_debug1(1, "in %s retrieval function", "acTL");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_acTL) &&
num_frames != NULL && num_plays != NULL)
{
*num_frames = info_ptr->num_frames;
*num_plays = info_ptr->num_plays;
return (1);
}
return (0);
}
png_uint_32 PNGAPI
png_get_num_frames(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_num_frames()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->num_frames);
return (0);
}
png_uint_32 PNGAPI
png_get_num_plays(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_num_plays()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->num_plays);
return (0);
}
png_uint_32 PNGAPI
png_get_next_frame_fcTL(png_structp png_ptr, png_infop info_ptr,
png_uint_32 *width, png_uint_32 *height,
png_uint_32 *x_offset, png_uint_32 *y_offset,
png_uint_16 *delay_num, png_uint_16 *delay_den,
png_byte *dispose_op, png_byte *blend_op)
{
png_debug1(1, "in %s retrieval function", "fcTL");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_fcTL) &&
width != NULL && height != NULL &&
x_offset != NULL && y_offset != NULL &&
delay_num != NULL && delay_den != NULL &&
dispose_op != NULL && blend_op != NULL)
{
*width = info_ptr->next_frame_width;
*height = info_ptr->next_frame_height;
*x_offset = info_ptr->next_frame_x_offset;
*y_offset = info_ptr->next_frame_y_offset;
*delay_num = info_ptr->next_frame_delay_num;
*delay_den = info_ptr->next_frame_delay_den;
*dispose_op = info_ptr->next_frame_dispose_op;
*blend_op = info_ptr->next_frame_blend_op;
return (1);
}
return (0);
}
png_uint_32 PNGAPI
png_get_next_frame_width(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_next_frame_width()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->next_frame_width);
return (0);
}
png_uint_32 PNGAPI
png_get_next_frame_height(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_next_frame_height()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->next_frame_height);
return (0);
}
png_uint_32 PNGAPI
png_get_next_frame_x_offset(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_next_frame_x_offset()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->next_frame_x_offset);
return (0);
}
png_uint_32 PNGAPI
png_get_next_frame_y_offset(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_next_frame_y_offset()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->next_frame_y_offset);
return (0);
}
png_uint_16 PNGAPI
png_get_next_frame_delay_num(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_next_frame_delay_num()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->next_frame_delay_num);
return (0);
}
png_uint_16 PNGAPI
png_get_next_frame_delay_den(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_next_frame_delay_den()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->next_frame_delay_den);
return (0);
}
png_byte PNGAPI
png_get_next_frame_dispose_op(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_next_frame_dispose_op()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->next_frame_dispose_op);
return (0);
}
png_byte PNGAPI
png_get_next_frame_blend_op(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_get_next_frame_blend_op()");
if (png_ptr != NULL && info_ptr != NULL)
return (info_ptr->next_frame_blend_op);
return (0);
}
png_byte PNGAPI
png_get_first_frame_is_hidden(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_first_frame_is_hidden()");
if (png_ptr != NULL)
return (png_byte)(png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN);
PNG_UNUSED(info_ptr)
return 0;
}
#endif /* PNG_APNG_SUPPORTED */
#endif /* READ || WRITE */

13
thirdparty/libpng/pnginfo.h vendored
View file

@ -263,18 +263,5 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
png_bytepp row_pointers; /* the image bits */
#endif
#ifdef PNG_APNG_SUPPORTED
png_uint_32 num_frames; /* including default image */
png_uint_32 num_plays;
png_uint_32 next_frame_width;
png_uint_32 next_frame_height;
png_uint_32 next_frame_x_offset;
png_uint_32 next_frame_y_offset;
png_uint_16 next_frame_delay_num;
png_uint_16 next_frame_delay_den;
png_byte next_frame_dispose_op;
png_byte next_frame_blend_op;
#endif
};
#endif /* PNGINFO_H */

4
thirdparty/libpng/pnglibconf.h vendored
View file

@ -1,8 +1,8 @@
/* pnglibconf.h - library build configuration */
/* libpng version 1.6.37 */
/* libpng version 1.6.38 */
/* Copyright (c) 2018-2019 Cosmin Truta */
/* Copyright (c) 2018-2022 Cosmin Truta */
/* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */
/* This code is released under the libpng license. */

199
thirdparty/libpng/pngpread.c vendored
View file

@ -195,106 +195,6 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
chunk_name = png_ptr->chunk_name;
#ifdef PNG_READ_APNG_SUPPORTED
if (png_ptr->num_frames_read > 0 &&
png_ptr->num_frames_read < info_ptr->num_frames)
{
if (chunk_name == png_IDAT)
{
/* Discard trailing IDATs for the first frame */
if (png_ptr->mode & PNG_HAVE_fcTL || png_ptr->num_frames_read > 1)
png_error(png_ptr, "out of place IDAT");
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
png_push_save_buffer(png_ptr);
return;
}
png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
return;
}
else if (chunk_name == png_fdAT)
{
if (png_ptr->buffer_size < 4)
{
png_push_save_buffer(png_ptr);
return;
}
png_ensure_sequence_number(png_ptr, 4);
if (!(png_ptr->mode & PNG_HAVE_fcTL))
{
/* Discard trailing fdATs for frames other than the first */
if (png_ptr->num_frames_read < 2)
png_error(png_ptr, "out of place fdAT");
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
png_push_save_buffer(png_ptr);
return;
}
png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
return;
}
else
{
/* frame data follows */
png_ptr->idat_size = png_ptr->push_length - 4;
png_ptr->mode |= PNG_HAVE_IDAT;
png_ptr->process_mode = PNG_READ_IDAT_MODE;
return;
}
}
else if (chunk_name == png_fcTL)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
png_push_save_buffer(png_ptr);
return;
}
png_read_reset(png_ptr);
png_ptr->mode &= ~PNG_HAVE_fcTL;
png_handle_fcTL(png_ptr, info_ptr, png_ptr->push_length);
if (!(png_ptr->mode & PNG_HAVE_fcTL))
png_error(png_ptr, "missing required fcTL chunk");
png_read_reinit(png_ptr, info_ptr);
png_progressive_read_reset(png_ptr);
if (png_ptr->frame_info_fn != NULL)
(*(png_ptr->frame_info_fn))(png_ptr, png_ptr->num_frames_read);
png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
return;
}
else
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
png_push_save_buffer(png_ptr);
return;
}
png_warning(png_ptr, "Skipped (ignored) a chunk "
"between APNG chunks");
png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
return;
}
return;
}
#endif /* PNG_READ_APNG_SUPPORTED */
if (chunk_name == png_IDAT)
{
if ((png_ptr->mode & PNG_AFTER_IDAT) != 0)
@ -361,9 +261,6 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
else if (chunk_name == png_IDAT)
{
#ifdef PNG_READ_APNG_SUPPORTED
png_have_info(png_ptr, info_ptr);
#endif
png_ptr->idat_size = png_ptr->push_length;
png_ptr->process_mode = PNG_READ_IDAT_MODE;
png_push_have_info(png_ptr, info_ptr);
@ -509,30 +406,6 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
png_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
}
#endif
#ifdef PNG_READ_APNG_SUPPORTED
else if (chunk_name == png_acTL)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
png_push_save_buffer(png_ptr);
return;
}
png_handle_acTL(png_ptr, info_ptr, png_ptr->push_length);
}
else if (chunk_name == png_fcTL)
{
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
png_push_save_buffer(png_ptr);
return;
}
png_handle_fcTL(png_ptr, info_ptr, png_ptr->push_length);
}
#endif /* PNG_READ_APNG_SUPPORTED */
else
{
@ -666,11 +539,7 @@ png_push_read_IDAT(png_structrp png_ptr)
png_byte chunk_tag[4];
/* TODO: this code can be commoned up with the same code in push_read */
#ifdef PNG_READ_APNG_SUPPORTED
PNG_PUSH_SAVE_BUFFER_IF_LT(12)
#else
PNG_PUSH_SAVE_BUFFER_IF_LT(8)
#endif
png_push_fill_buffer(png_ptr, chunk_length, 4);
png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
png_reset_crc(png_ptr);
@ -678,64 +547,17 @@ png_push_read_IDAT(png_structrp png_ptr)
png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
#ifdef PNG_READ_APNG_SUPPORTED
if (png_ptr->chunk_name != png_fdAT && png_ptr->num_frames_read > 0)
{
if (png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED)
{
png_ptr->process_mode = PNG_READ_CHUNK_MODE;
if (png_ptr->frame_end_fn != NULL)
(*(png_ptr->frame_end_fn))(png_ptr, png_ptr->num_frames_read);
png_ptr->num_frames_read++;
return;
}
else
{
if (png_ptr->chunk_name == png_IEND)
png_error(png_ptr, "Not enough image data");
if (png_ptr->push_length + 4 > png_ptr->buffer_size)
{
png_push_save_buffer(png_ptr);
return;
}
png_warning(png_ptr, "Skipping (ignoring) a chunk between "
"APNG chunks");
png_crc_finish(png_ptr, png_ptr->push_length);
png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
return;
}
}
else
#endif
#ifdef PNG_READ_APNG_SUPPORTED
if (png_ptr->chunk_name != png_IDAT && png_ptr->num_frames_read == 0)
#else
if (png_ptr->chunk_name != png_IDAT)
#endif
{
png_ptr->process_mode = PNG_READ_CHUNK_MODE;
if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0)
png_error(png_ptr, "Not enough compressed data");
#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++;
#endif
return;
}
png_ptr->idat_size = png_ptr->push_length;
#ifdef PNG_READ_APNG_SUPPORTED
if (png_ptr->num_frames_read > 0)
{
png_ensure_sequence_number(png_ptr, 4);
png_ptr->idat_size -= 4;
}
#endif
}
if (png_ptr->idat_size != 0 && png_ptr->save_buffer_size != 0)
@ -809,15 +631,6 @@ png_process_IDAT_data(png_structrp png_ptr, png_bytep buffer,
if (!(buffer_length > 0) || buffer == NULL)
png_error(png_ptr, "No IDAT data (internal error)");
#ifdef PNG_READ_APNG_SUPPORTED
/* If the app is not APNG-aware, decode only the first frame */
if (!(png_ptr->apng_flags & PNG_APNG_APP) && png_ptr->num_frames_read > 0)
{
png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
return;
}
#endif
/* This routine must process all the data it has been given
* before returning, calling the row callback as required to
* handle the uncompressed results.
@ -1272,18 +1085,6 @@ png_set_progressive_read_fn(png_structrp png_ptr, png_voidp progressive_ptr,
png_set_read_fn(png_ptr, progressive_ptr, png_push_fill_buffer);
}
#ifdef PNG_READ_APNG_SUPPORTED
void PNGAPI
png_set_progressive_frame_fn(png_structp png_ptr,
png_progressive_frame_ptr frame_info_fn,
png_progressive_frame_ptr frame_end_fn)
{
png_ptr->frame_info_fn = frame_info_fn;
png_ptr->frame_end_fn = frame_end_fn;
png_ptr->apng_flags |= PNG_APNG_APP;
}
#endif
png_voidp PNGAPI
png_get_progressive_ptr(png_const_structrp png_ptr)
{

120
thirdparty/libpng/pngpriv.h vendored
View file

@ -1,7 +1,7 @@
/* pngpriv.h - private declarations for use inside libpng
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -174,7 +174,7 @@
# else /* !defined __ARM_NEON__ */
/* The 'intrinsics' code simply won't compile without this -mfpu=neon:
*/
# if !defined(__aarch64__)
# if !defined(__aarch64__) && !defined(_M_ARM64)
/* The assembler code currently does not work on ARM64 */
# define PNG_ARM_NEON_IMPLEMENTATION 2
# endif /* __aarch64__ */
@ -185,6 +185,8 @@
/* Use the intrinsics code by default. */
# define PNG_ARM_NEON_IMPLEMENTATION 1
# endif
#else /* PNG_ARM_NEON_OPT == 0 */
# define PNG_ARM_NEON_IMPLEMENTATION 0
#endif /* PNG_ARM_NEON_OPT > 0 */
#ifndef PNG_MIPS_MSA_OPT
@ -263,11 +265,15 @@
# ifndef PNG_MIPS_MSA_IMPLEMENTATION
# define PNG_MIPS_MSA_IMPLEMENTATION 1
# endif
#else
# define PNG_MIPS_MSA_IMPLEMENTATION 0
#endif /* PNG_MIPS_MSA_OPT > 0 */
#if PNG_POWERPC_VSX_OPT > 0
# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_vsx
# define PNG_POWERPC_VSX_IMPLEMENTATION 1
#else
# define PNG_POWERPC_VSX_IMPLEMENTATION 0
#endif
@ -492,16 +498,7 @@
static_cast<type>(static_cast<const void*>(value))
#else
# define png_voidcast(type, value) (value)
# ifdef _WIN64
# ifdef __GNUC__
typedef unsigned long long png_ptruint;
# else
typedef unsigned __int64 png_ptruint;
# endif
# else
typedef unsigned long png_ptruint;
# endif
# define png_constcast(type, value) ((type)(png_ptruint)(const void*)(value))
# define png_constcast(type, value) ((type)(void*)(const void*)(value))
# define png_aligncast(type, value) ((void*)(value))
# define png_aligncastconst(type, value) ((const void*)(value))
#endif /* __cplusplus */
@ -543,9 +540,8 @@
# include <alloc.h>
#endif
#if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \
defined(_WIN32) || defined(__WIN32__)
# include <windows.h> /* defines _WINDOWS_ macro */
#if defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
# include <windows.h>
#endif
#endif /* PNG_VERSION_INFO_ONLY */
@ -554,24 +550,20 @@
* functions that are passed far data must be model-independent.
*/
/* Memory model/platform independent fns */
/* Platform-independent functions */
#ifndef PNG_ABORT
# ifdef _WINDOWS_
# define PNG_ABORT() ExitProcess(0)
# else
# define PNG_ABORT() abort()
# endif
# define PNG_ABORT() abort()
#endif
/* These macros may need to be architecture dependent. */
#define PNG_ALIGN_NONE 0 /* do not use data alignment */
#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */
#define PNG_ALIGN_NONE 0 /* do not use data alignment */
#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */
#ifdef offsetof
# define PNG_ALIGN_OFFSET 2 /* use offsetof to determine alignment */
# define PNG_ALIGN_OFFSET 2 /* use offsetof to determine alignment */
#else
# define PNG_ALIGN_OFFSET -1 /* prevent the use of this */
#endif
#define PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */
#define PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */
#ifndef PNG_ALIGN_TYPE
/* Default to using aligned access optimizations and requiring alignment to a
@ -585,26 +577,25 @@
/* This is used because in some compiler implementations non-aligned
* structure members are supported, so the offsetof approach below fails.
* Set PNG_ALIGN_SIZE=0 for compiler combinations where unaligned access
* is good for performance. Do not do this unless you have tested the result
* and understand it.
* is good for performance. Do not do this unless you have tested the
* result and understand it.
*/
# define png_alignof(type) (sizeof (type))
# define png_alignof(type) (sizeof(type))
#else
# if PNG_ALIGN_TYPE == PNG_ALIGN_OFFSET
# define png_alignof(type) offsetof(struct{char c; type t;}, t)
# define png_alignof(type) offsetof(struct{char c; type t;}, t)
# else
# if PNG_ALIGN_TYPE == PNG_ALIGN_ALWAYS
# define png_alignof(type) (1)
# endif
/* Else leave png_alignof undefined to prevent use thereof */
# if PNG_ALIGN_TYPE == PNG_ALIGN_ALWAYS
# define png_alignof(type) 1
# endif
/* Else leave png_alignof undefined to prevent use thereof */
# endif
#endif
/* This implicitly assumes alignment is always to a power of 2. */
/* This implicitly assumes alignment is always a multiple of 2. */
#ifdef png_alignof
# define png_isaligned(ptr, type)\
(((type)((const char*)ptr-(const char*)0) & \
(type)(png_alignof(type)-1)) == 0)
# define png_isaligned(ptr, type) \
(((type)(size_t)((const void*)(ptr)) & (type)(png_alignof(type)-1)) == 0)
#else
# define png_isaligned(ptr, type) 0
#endif
@ -637,10 +628,6 @@
#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000U /* Have another chunk after IDAT */
/* 0x4000U (unused) */
#define PNG_IS_READ_STRUCT 0x8000U /* Else is a write struct */
#ifdef PNG_APNG_SUPPORTED
#define PNG_HAVE_acTL 0x10000U
#define PNG_HAVE_fcTL 0x20000U
#endif
/* Flags for the transformations the PNG library does on the image data */
#define PNG_BGR 0x0001U
@ -877,16 +864,6 @@
#define png_tRNS PNG_U32(116, 82, 78, 83)
#define png_zTXt PNG_U32(122, 84, 88, 116)
#ifdef PNG_APNG_SUPPORTED
#define png_acTL PNG_U32( 97, 99, 84, 76)
#define png_fcTL PNG_U32(102, 99, 84, 76)
#define png_fdAT PNG_U32(102, 100, 65, 84)
/* For png_struct.apng_flags: */
#define PNG_FIRST_FRAME_HIDDEN 0x0001U
#define PNG_APNG_APP 0x0002U
#endif
/* The following will work on (signed char*) strings, whereas the get_uint_32
* macro will fail on top-bit-set values because of the sign extension.
*/
@ -1658,47 +1635,6 @@ PNG_INTERNAL_FUNCTION(void,png_colorspace_sync,(png_const_structrp png_ptr,
*/
#endif
#ifdef PNG_APNG_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_ensure_fcTL_is_valid,(png_structp png_ptr,
png_uint_32 width, png_uint_32 height,
png_uint_32 x_offset, png_uint_32 y_offset,
png_uint_16 delay_num, png_uint_16 delay_den,
png_byte dispose_op, png_byte blend_op), PNG_EMPTY);
#ifdef PNG_READ_APNG_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_handle_acTL,(png_structp png_ptr, png_infop info_ptr,
png_uint_32 length),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_handle_fcTL,(png_structp png_ptr, png_infop info_ptr,
png_uint_32 length),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_handle_fdAT,(png_structp png_ptr, png_infop info_ptr,
png_uint_32 length),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_have_info,(png_structp png_ptr, png_infop info_ptr),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_ensure_sequence_number,(png_structp png_ptr,
png_uint_32 length),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_reset,(png_structp png_ptr),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_reinit,(png_structp png_ptr,
png_infop info_ptr),PNG_EMPTY);
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_progressive_read_reset,(png_structp png_ptr),PNG_EMPTY);
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#endif /* PNG_READ_APNG_SUPPORTED */
#ifdef PNG_WRITE_APNG_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_write_acTL,(png_structp png_ptr,
png_uint_32 num_frames, png_uint_32 num_plays),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_write_fcTL,(png_structp png_ptr,
png_uint_32 width, png_uint_32 height,
png_uint_32 x_offset, png_uint_32 y_offset,
png_uint_16 delay_num, png_uint_16 delay_den,
png_byte dispose_op, png_byte blend_op),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_write_fdAT,(png_structp png_ptr,
png_const_bytep data, png_size_t length),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_write_reset,(png_structp png_ptr),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_write_reinit,(png_structp png_ptr,
png_infop info_ptr, png_uint_32 width, png_uint_32 height),PNG_EMPTY);
#endif /* PNG_WRITE_APNG_SUPPORTED */
#endif /* PNG_APNG_SUPPORTED */
/* Added at libpng version 1.4.0 */
#ifdef PNG_COLORSPACE_SUPPORTED
/* These internal functions are for maintaining the colorspace structure within

83
thirdparty/libpng/pngread.c vendored
View file

@ -161,9 +161,6 @@ png_read_info(png_structrp png_ptr, png_inforp info_ptr)
else if (chunk_name == png_IDAT)
{
#ifdef PNG_READ_APNG_SUPPORTED
png_have_info(png_ptr, info_ptr);
#endif
png_ptr->idat_size = length;
break;
}
@ -258,17 +255,6 @@ png_read_info(png_structrp png_ptr, png_inforp info_ptr)
png_handle_iTXt(png_ptr, info_ptr, length);
#endif
#ifdef PNG_READ_APNG_SUPPORTED
else if (chunk_name == png_acTL)
png_handle_acTL(png_ptr, info_ptr, length);
else if (chunk_name == png_fcTL)
png_handle_fcTL(png_ptr, info_ptr, length);
else if (chunk_name == png_fdAT)
png_handle_fdAT(png_ptr, info_ptr, length);
#endif
else
png_handle_unknown(png_ptr, info_ptr, length,
PNG_HANDLE_CHUNK_AS_DEFAULT);
@ -276,72 +262,6 @@ png_read_info(png_structrp png_ptr, png_inforp info_ptr)
}
#endif /* SEQUENTIAL_READ */
#ifdef PNG_READ_APNG_SUPPORTED
void PNGAPI
png_read_frame_head(png_structp png_ptr, png_infop info_ptr)
{
png_byte have_chunk_after_DAT; /* after IDAT or after fdAT */
png_debug(0, "Reading frame head");
if (!(png_ptr->mode & PNG_HAVE_acTL))
png_error(png_ptr, "attempt to png_read_frame_head() but "
"no acTL present");
/* do nothing for the main IDAT */
if (png_ptr->num_frames_read == 0)
return;
png_read_reset(png_ptr);
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
png_ptr->mode &= ~PNG_HAVE_fcTL;
have_chunk_after_DAT = 0;
for (;;)
{
png_uint_32 length = png_read_chunk_header(png_ptr);
if (png_ptr->chunk_name == png_IDAT)
{
/* discard trailing IDATs for the first frame */
if (have_chunk_after_DAT || png_ptr->num_frames_read > 1)
png_error(png_ptr, "png_read_frame_head(): out of place IDAT");
png_crc_finish(png_ptr, length);
}
else if (png_ptr->chunk_name == png_fcTL)
{
png_handle_fcTL(png_ptr, info_ptr, length);
have_chunk_after_DAT = 1;
}
else if (png_ptr->chunk_name == png_fdAT)
{
png_ensure_sequence_number(png_ptr, length);
/* discard trailing fdATs for frames other than the first */
if (!have_chunk_after_DAT && png_ptr->num_frames_read > 1)
png_crc_finish(png_ptr, length - 4);
else if(png_ptr->mode & PNG_HAVE_fcTL)
{
png_ptr->idat_size = length - 4;
png_ptr->mode |= PNG_HAVE_IDAT;
break;
}
else
png_error(png_ptr, "png_read_frame_head(): out of place fdAT");
}
else
{
png_warning(png_ptr, "Skipped (ignored) a chunk "
"between APNG chunks");
png_crc_finish(png_ptr, length);
}
}
}
#endif /* PNG_READ_APNG_SUPPORTED */
/* Optional call to update the users info_ptr structure */
void PNGAPI
png_read_update_info(png_structrp png_ptr, png_inforp info_ptr)
@ -3532,7 +3452,6 @@ png_image_read_background(png_voidp argument)
for (pass = 0; pass < passes; ++pass)
{
png_bytep row = png_voidcast(png_bytep, display->first_row);
unsigned int startx, stepx, stepy;
png_uint_32 y;
@ -3637,8 +3556,6 @@ png_image_read_background(png_voidp argument)
inrow += 2; /* gray and alpha channel */
}
row += display->row_bytes;
}
}
}

2
thirdparty/libpng/pngrtran.c vendored
View file

@ -21,7 +21,7 @@
#ifdef PNG_ARM_NEON_IMPLEMENTATION
# if PNG_ARM_NEON_IMPLEMENTATION == 1
# define PNG_ARM_NEON_INTRINSICS_AVAILABLE
# if defined(_MSC_VER) && defined(_M_ARM64)
# if defined(_MSC_VER) && !defined(__clang__) && defined(_M_ARM64)
# include <arm64_neon.h>
# else
# include <arm_neon.h>

326
thirdparty/libpng/pngrutil.c vendored
View file

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -301,7 +301,6 @@ png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn)
if (buffer != NULL && new_size > png_ptr->read_buffer_size)
{
png_ptr->read_buffer = NULL;
png_ptr->read_buffer = NULL;
png_ptr->read_buffer_size = 0;
png_free(png_ptr, buffer);
@ -865,11 +864,6 @@ png_handle_IHDR(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
filter_type = buf[11];
interlace_type = buf[12];
#ifdef PNG_READ_APNG_SUPPORTED
png_ptr->first_frame_width = width;
png_ptr->first_frame_height = height;
#endif
/* Set internal variables */
png_ptr->width = width;
png_ptr->height = height;
@ -2081,21 +2075,22 @@ png_handle_eXIf(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
png_byte buf[1];
png_crc_read(png_ptr, buf, 1);
info_ptr->eXIf_buf[i] = buf[0];
if (i == 1 && buf[0] != 'M' && buf[0] != 'I'
&& info_ptr->eXIf_buf[0] != buf[0])
if (i == 1)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "incorrect byte-order specifier");
png_free(png_ptr, info_ptr->eXIf_buf);
info_ptr->eXIf_buf = NULL;
return;
if ((buf[0] != 'M' && buf[0] != 'I') ||
(info_ptr->eXIf_buf[0] != buf[0]))
{
png_crc_finish(png_ptr, length - 2);
png_chunk_benign_error(png_ptr, "incorrect byte-order specifier");
png_free(png_ptr, info_ptr->eXIf_buf);
info_ptr->eXIf_buf = NULL;
return;
}
}
}
if (png_crc_finish(png_ptr, 0) != 0)
return;
png_set_eXIf_1(png_ptr, info_ptr, length, info_ptr->eXIf_buf);
if (png_crc_finish(png_ptr, 0) == 0)
png_set_eXIf_1(png_ptr, info_ptr, length, info_ptr->eXIf_buf);
png_free(png_ptr, info_ptr->eXIf_buf);
info_ptr->eXIf_buf = NULL;
@ -2131,8 +2126,9 @@ png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
num = length / 2 ;
if (num != (unsigned int) png_ptr->num_palette ||
num > (unsigned int) PNG_MAX_PALETTE_LENGTH)
if (length != num * 2 ||
num != (unsigned int)png_ptr->num_palette ||
num > (unsigned int)PNG_MAX_PALETTE_LENGTH)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "invalid");
@ -2862,179 +2858,6 @@ png_handle_iTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
}
#endif
#ifdef PNG_READ_APNG_SUPPORTED
void /* PRIVATE */
png_handle_acTL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_byte data[8];
png_uint_32 num_frames;
png_uint_32 num_plays;
png_uint_32 didSet;
png_debug(1, "in png_handle_acTL");
if (!(png_ptr->mode & PNG_HAVE_IHDR))
{
png_error(png_ptr, "Missing IHDR before acTL");
}
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
png_warning(png_ptr, "Invalid acTL after IDAT skipped");
png_crc_finish(png_ptr, length);
return;
}
else if (png_ptr->mode & PNG_HAVE_acTL)
{
png_warning(png_ptr, "Duplicate acTL skipped");
png_crc_finish(png_ptr, length);
return;
}
else if (length != 8)
{
png_warning(png_ptr, "acTL with invalid length skipped");
png_crc_finish(png_ptr, length);
return;
}
png_crc_read(png_ptr, data, 8);
png_crc_finish(png_ptr, 0);
num_frames = png_get_uint_31(png_ptr, data);
num_plays = png_get_uint_31(png_ptr, data + 4);
/* the set function will do error checking on num_frames */
didSet = png_set_acTL(png_ptr, info_ptr, num_frames, num_plays);
if(didSet)
png_ptr->mode |= PNG_HAVE_acTL;
}
void /* PRIVATE */
png_handle_fcTL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_byte data[22];
png_uint_32 width;
png_uint_32 height;
png_uint_32 x_offset;
png_uint_32 y_offset;
png_uint_16 delay_num;
png_uint_16 delay_den;
png_byte dispose_op;
png_byte blend_op;
png_debug(1, "in png_handle_fcTL");
png_ensure_sequence_number(png_ptr, length);
if (!(png_ptr->mode & PNG_HAVE_IHDR))
{
png_error(png_ptr, "Missing IHDR before fcTL");
}
else if (png_ptr->mode & PNG_HAVE_IDAT)
{
/* for any frames other then the first this message may be misleading,
* but correct. PNG_HAVE_IDAT is unset before the frame head is read
* i can't think of a better message */
png_warning(png_ptr, "Invalid fcTL after IDAT skipped");
png_crc_finish(png_ptr, length-4);
return;
}
else if (png_ptr->mode & PNG_HAVE_fcTL)
{
png_warning(png_ptr, "Duplicate fcTL within one frame skipped");
png_crc_finish(png_ptr, length-4);
return;
}
else if (length != 26)
{
png_warning(png_ptr, "fcTL with invalid length skipped");
png_crc_finish(png_ptr, length-4);
return;
}
png_crc_read(png_ptr, data, 22);
png_crc_finish(png_ptr, 0);
width = png_get_uint_31(png_ptr, data);
height = png_get_uint_31(png_ptr, data + 4);
x_offset = png_get_uint_31(png_ptr, data + 8);
y_offset = png_get_uint_31(png_ptr, data + 12);
delay_num = png_get_uint_16(data + 16);
delay_den = png_get_uint_16(data + 18);
dispose_op = data[20];
blend_op = data[21];
if (png_ptr->num_frames_read == 0 && (x_offset != 0 || y_offset != 0))
{
png_warning(png_ptr, "fcTL for the first frame must have zero offset");
return;
}
if (info_ptr != NULL)
{
if (png_ptr->num_frames_read == 0 &&
(width != info_ptr->width || height != info_ptr->height))
{
png_warning(png_ptr, "size in first frame's fcTL must match "
"the size in IHDR");
return;
}
/* The set function will do more error checking */
png_set_next_frame_fcTL(png_ptr, info_ptr, width, height,
x_offset, y_offset, delay_num, delay_den,
dispose_op, blend_op);
png_read_reinit(png_ptr, info_ptr);
png_ptr->mode |= PNG_HAVE_fcTL;
}
}
void /* PRIVATE */
png_have_info(png_structp png_ptr, png_infop info_ptr)
{
if((info_ptr->valid & PNG_INFO_acTL) && !(info_ptr->valid & PNG_INFO_fcTL))
{
png_ptr->apng_flags |= PNG_FIRST_FRAME_HIDDEN;
info_ptr->num_frames++;
}
}
void /* PRIVATE */
png_handle_fdAT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_ensure_sequence_number(png_ptr, length);
/* This function is only called from png_read_end(), png_read_info(),
* and png_push_read_chunk() which means that:
* - the user doesn't want to read this frame
* - or this is an out-of-place fdAT
* in either case it is safe to ignore the chunk with a warning */
png_warning(png_ptr, "ignoring fdAT chunk");
png_crc_finish(png_ptr, length - 4);
PNG_UNUSED(info_ptr)
}
void /* PRIVATE */
png_ensure_sequence_number(png_structp png_ptr, png_uint_32 length)
{
png_byte data[4];
png_uint_32 sequence_number;
if (length < 4)
png_error(png_ptr, "invalid fcTL or fdAT chunk found");
png_crc_read(png_ptr, data, 4);
sequence_number = png_get_uint_31(png_ptr, data);
if (sequence_number != png_ptr->next_seq_num)
png_error(png_ptr, "fcTL or fdAT chunk with out-of-order sequence "
"number found");
png_ptr->next_seq_num++;
}
#endif /* PNG_READ_APNG_SUPPORTED */
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
/* Utility function for png_handle_unknown; set up png_ptr::unknown_chunk */
static int
@ -4343,38 +4166,7 @@ png_read_IDAT_data(png_structrp png_ptr, png_bytep output,
{
uInt avail_in;
png_bytep buffer;
#ifdef PNG_READ_APNG_SUPPORTED
png_uint_32 bytes_to_skip = 0;
while (png_ptr->idat_size == 0 || bytes_to_skip != 0)
{
png_crc_finish(png_ptr, bytes_to_skip);
bytes_to_skip = 0;
png_ptr->idat_size = png_read_chunk_header(png_ptr);
if (png_ptr->num_frames_read == 0)
{
if (png_ptr->chunk_name != png_IDAT)
png_error(png_ptr, "Not enough image data");
}
else
{
if (png_ptr->chunk_name == png_IEND)
png_error(png_ptr, "Not enough image data");
if (png_ptr->chunk_name != png_fdAT)
{
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;
}
}
#else
while (png_ptr->idat_size == 0)
{
png_crc_finish(png_ptr, 0);
@ -4386,7 +4178,7 @@ png_read_IDAT_data(png_structrp png_ptr, png_bytep output,
if (png_ptr->chunk_name != png_IDAT)
png_error(png_ptr, "Not enough image data");
}
#endif /* PNG_READ_APNG_SUPPORTED */
avail_in = png_ptr->IDAT_read_size;
if (avail_in > png_ptr->idat_size)
@ -4449,9 +4241,6 @@ png_read_IDAT_data(png_structrp png_ptr, png_bytep output,
png_ptr->mode |= PNG_AFTER_IDAT;
png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
#ifdef PNG_READ_APNG_SUPPORTED
png_ptr->num_frames_read++;
#endif
if (png_ptr->zstream.avail_in > 0 || png_ptr->idat_size > 0)
png_chunk_benign_error(png_ptr, "Extra compressed data");
@ -4833,14 +4622,13 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
*/
{
png_bytep temp = png_ptr->big_row_buf + 32;
int extra = (int)((temp - (png_bytep)0) & 0x0f);
size_t extra = (size_t)temp & 0x0f;
png_ptr->row_buf = temp - extra - 1/*filter byte*/;
temp = png_ptr->big_prev_row + 32;
extra = (int)((temp - (png_bytep)0) & 0x0f);
extra = (size_t)temp & 0x0f;
png_ptr->prev_row = temp - extra - 1/*filter byte*/;
}
#else
/* Use 31 bytes of padding before and 17 bytes after row_buf. */
png_ptr->row_buf = png_ptr->big_row_buf + 31;
@ -4890,80 +4678,4 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
png_ptr->flags |= PNG_FLAG_ROW_INIT;
}
#ifdef PNG_READ_APNG_SUPPORTED
/* This function is to be called after the main IDAT set has been read and
* before a new IDAT is read. It resets some parts of png_ptr
* to make them usable by the read functions again */
void /* PRIVATE */
png_read_reset(png_structp png_ptr)
{
png_ptr->mode &= ~PNG_HAVE_IDAT;
png_ptr->mode &= ~PNG_AFTER_IDAT;
png_ptr->row_number = 0;
png_ptr->pass = 0;
}
void /* PRIVATE */
png_read_reinit(png_structp png_ptr, png_infop info_ptr)
{
png_ptr->width = info_ptr->next_frame_width;
png_ptr->height = info_ptr->next_frame_height;
png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,png_ptr->width);
png_ptr->info_rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth,
png_ptr->width);
if (png_ptr->prev_row)
memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
}
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
/* same as png_read_reset() but for the progressive reader */
void /* PRIVATE */
png_progressive_read_reset(png_structp png_ptr)
{
#ifdef PNG_READ_INTERLACING_SUPPORTED
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Start of interlace block */
const int png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
/* Offset to next interlace block */
const int png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
/* Start of interlace block in the y direction */
const int png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
/* Offset to next interlace block in the y direction */
const int png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
if (png_ptr->interlaced)
{
if (!(png_ptr->transformations & PNG_INTERLACE))
png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
png_pass_ystart[0]) / png_pass_yinc[0];
else
png_ptr->num_rows = png_ptr->height;
png_ptr->iwidth = (png_ptr->width +
png_pass_inc[png_ptr->pass] - 1 -
png_pass_start[png_ptr->pass]) /
png_pass_inc[png_ptr->pass];
}
else
#endif /* PNG_READ_INTERLACING_SUPPORTED */
{
png_ptr->num_rows = png_ptr->height;
png_ptr->iwidth = png_ptr->width;
}
png_ptr->flags &= ~PNG_FLAG_ZSTREAM_ENDED;
if (inflateReset(&(png_ptr->zstream)) != Z_OK)
png_error(png_ptr, "inflateReset failed");
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_ROWBYTES(png_ptr->pixel_depth,
png_ptr->iwidth) + 1;
}
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#endif /* PNG_READ_APNG_SUPPORTED */
#endif /* READ */

159
thirdparty/libpng/pngset.c vendored
View file

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -288,11 +288,6 @@ png_set_IHDR(png_const_structrp png_ptr, png_inforp info_ptr,
info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
#ifdef PNG_APNG_SUPPORTED
/* for non-animated png. this may be overwritten from an acTL chunk later */
info_ptr->num_frames = 1;
#endif
}
#ifdef PNG_oFFs_SUPPORTED
@ -1024,6 +1019,9 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
info_ptr->trans_alpha = png_voidcast(png_bytep,
png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
memcpy(info_ptr->trans_alpha, trans_alpha, (size_t)num_trans);
info_ptr->valid |= PNG_INFO_tRNS;
info_ptr->free_me |= PNG_FREE_TRNS;
}
png_ptr->trans_alpha = info_ptr->trans_alpha;
}
@ -1163,147 +1161,6 @@ png_set_sPLT(png_const_structrp png_ptr,
}
#endif /* sPLT */
#ifdef PNG_APNG_SUPPORTED
png_uint_32 PNGAPI
png_set_acTL(png_structp png_ptr, png_infop info_ptr,
png_uint_32 num_frames, png_uint_32 num_plays)
{
png_debug1(1, "in %s storage function", "acTL");
if (png_ptr == NULL || info_ptr == NULL)
{
png_warning(png_ptr,
"Call to png_set_acTL() with NULL png_ptr "
"or info_ptr ignored");
return (0);
}
if (num_frames == 0)
{
png_warning(png_ptr,
"Ignoring attempt to set acTL with num_frames zero");
return (0);
}
if (num_frames > PNG_UINT_31_MAX)
{
png_warning(png_ptr,
"Ignoring attempt to set acTL with num_frames > 2^31-1");
return (0);
}
if (num_plays > PNG_UINT_31_MAX)
{
png_warning(png_ptr,
"Ignoring attempt to set acTL with num_plays "
"> 2^31-1");
return (0);
}
info_ptr->num_frames = num_frames;
info_ptr->num_plays = num_plays;
info_ptr->valid |= PNG_INFO_acTL;
return (1);
}
/* delay_num and delay_den can hold any 16-bit values including zero */
png_uint_32 PNGAPI
png_set_next_frame_fcTL(png_structp png_ptr, png_infop info_ptr,
png_uint_32 width, png_uint_32 height,
png_uint_32 x_offset, png_uint_32 y_offset,
png_uint_16 delay_num, png_uint_16 delay_den,
png_byte dispose_op, png_byte blend_op)
{
png_debug1(1, "in %s storage function", "fcTL");
if (png_ptr == NULL || info_ptr == NULL)
{
png_warning(png_ptr,
"Call to png_set_fcTL() with NULL png_ptr or info_ptr "
"ignored");
return (0);
}
png_ensure_fcTL_is_valid(png_ptr, width, height, x_offset, y_offset,
delay_num, delay_den, dispose_op, blend_op);
if (blend_op == PNG_BLEND_OP_OVER)
{
if (!(png_ptr->color_type & PNG_COLOR_MASK_ALPHA) &&
!(png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
{
png_warning(png_ptr, "PNG_BLEND_OP_OVER is meaningless "
"and wasteful for opaque images, ignored");
blend_op = PNG_BLEND_OP_SOURCE;
}
}
info_ptr->next_frame_width = width;
info_ptr->next_frame_height = height;
info_ptr->next_frame_x_offset = x_offset;
info_ptr->next_frame_y_offset = y_offset;
info_ptr->next_frame_delay_num = delay_num;
info_ptr->next_frame_delay_den = delay_den;
info_ptr->next_frame_dispose_op = dispose_op;
info_ptr->next_frame_blend_op = blend_op;
info_ptr->valid |= PNG_INFO_fcTL;
return (1);
}
void /* PRIVATE */
png_ensure_fcTL_is_valid(png_structp png_ptr,
png_uint_32 width, png_uint_32 height,
png_uint_32 x_offset, png_uint_32 y_offset,
png_uint_16 delay_num, png_uint_16 delay_den,
png_byte dispose_op, png_byte blend_op)
{
if (width == 0 || width > PNG_UINT_31_MAX)
png_error(png_ptr, "invalid width in fcTL (> 2^31-1)");
if (height == 0 || height > PNG_UINT_31_MAX)
png_error(png_ptr, "invalid height in fcTL (> 2^31-1)");
if (x_offset > PNG_UINT_31_MAX)
png_error(png_ptr, "invalid x_offset in fcTL (> 2^31-1)");
if (y_offset > PNG_UINT_31_MAX)
png_error(png_ptr, "invalid y_offset in fcTL (> 2^31-1)");
if (width + x_offset > png_ptr->first_frame_width ||
height + y_offset > png_ptr->first_frame_height)
png_error(png_ptr, "dimensions of a frame are greater than"
"the ones in IHDR");
if (dispose_op != PNG_DISPOSE_OP_NONE &&
dispose_op != PNG_DISPOSE_OP_BACKGROUND &&
dispose_op != PNG_DISPOSE_OP_PREVIOUS)
png_error(png_ptr, "invalid dispose_op in fcTL");
if (blend_op != PNG_BLEND_OP_SOURCE &&
blend_op != PNG_BLEND_OP_OVER)
png_error(png_ptr, "invalid blend_op in fcTL");
PNG_UNUSED(delay_num)
PNG_UNUSED(delay_den)
}
png_uint_32 PNGAPI
png_set_first_frame_is_hidden(png_structp png_ptr, png_infop info_ptr,
png_byte is_hidden)
{
png_debug(1, "in png_first_frame_is_hidden()");
if (png_ptr == NULL)
return 0;
if (is_hidden)
png_ptr->apng_flags |= PNG_FIRST_FRAME_HIDDEN;
else
png_ptr->apng_flags &= ~PNG_FIRST_FRAME_HIDDEN;
PNG_UNUSED(info_ptr)
return 1;
}
#endif /* PNG_APNG_SUPPORTED */
#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
static png_byte
check_location(png_const_structrp png_ptr, int location)
@ -1472,7 +1329,7 @@ png_set_unknown_chunk_location(png_const_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_MNG_FEATURES_SUPPORTED
png_uint_32 PNGAPI
png_permit_mng_features (png_structrp png_ptr, png_uint_32 mng_features)
png_permit_mng_features(png_structrp png_ptr, png_uint_32 mng_features)
{
png_debug(1, "in png_permit_mng_features");
@ -1779,7 +1636,7 @@ png_set_invalid(png_const_structrp png_ptr, png_inforp info_ptr, int mask)
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* This function was added to libpng 1.2.6 */
void PNGAPI
png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
png_set_user_limits(png_structrp png_ptr, png_uint_32 user_width_max,
png_uint_32 user_height_max)
{
/* Images with dimensions larger than these limits will be
@ -1795,7 +1652,7 @@ png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
/* This function was added to libpng 1.4.0 */
void PNGAPI
png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
png_set_chunk_cache_max(png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
{
if (png_ptr != NULL)
png_ptr->user_chunk_cache_max = user_chunk_cache_max;
@ -1803,7 +1660,7 @@ png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
/* This function was added to libpng 1.4.1 */
void PNGAPI
png_set_chunk_malloc_max (png_structrp png_ptr,
png_set_chunk_malloc_max(png_structrp png_ptr,
png_alloc_size_t user_chunk_malloc_max)
{
if (png_ptr != NULL)

33
thirdparty/libpng/pngstruct.h vendored
View file

@ -1,7 +1,7 @@
/* pngstruct.h - header file for PNG reference library
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -334,18 +334,8 @@ struct png_struct_def
size_t current_buffer_size; /* amount of data now in current_buffer */
int process_mode; /* what push library is currently doing */
int cur_palette; /* current push library palette index */
#endif /* PROGRESSIVE_READ */
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
/* For the Borland special 64K segment handler */
png_bytepp offset_table_ptr;
png_bytep offset_table;
png_uint_16 offset_table_number;
png_uint_16 offset_table_count;
png_uint_16 offset_table_count_free;
#endif
#ifdef PNG_READ_QUANTIZE_SUPPORTED
png_bytep palette_lookup; /* lookup table for quantizing */
png_bytep quantize_index; /* index translation for palette files */
@ -409,27 +399,6 @@ struct png_struct_def
png_byte filter_type;
#endif
#ifdef PNG_APNG_SUPPORTED
png_uint_32 apng_flags;
png_uint_32 next_seq_num; /* next fcTL/fdAT chunk sequence number */
png_uint_32 first_frame_width;
png_uint_32 first_frame_height;
#ifdef PNG_READ_APNG_SUPPORTED
png_uint_32 num_frames_read; /* incremented after all image data of */
/* a frame is read */
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
png_progressive_frame_ptr frame_info_fn; /* frame info read callback */
png_progressive_frame_ptr frame_end_fn; /* frame data read callback */
#endif
#endif
#ifdef PNG_WRITE_APNG_SUPPORTED
png_uint_32 num_frames_to_write;
png_uint_32 num_frames_written;
#endif
#endif /* PNG_APNG_SUPPORTED */
/* New members added in libpng-1.2.0 */
/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */

58
thirdparty/libpng/pngwrite.c vendored
View file

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -128,10 +128,6 @@ png_write_info_before_PLTE(png_structrp png_ptr, png_const_inforp info_ptr)
* the application continues writing the PNG. So check the 'invalid'
* flag here too.
*/
#ifdef PNG_WRITE_APNG_SUPPORTED
if (info_ptr->valid & PNG_INFO_acTL)
png_write_acTL(png_ptr, info_ptr->num_frames, info_ptr->num_plays);
#endif
#ifdef PNG_GAMMA_SUPPORTED
# ifdef PNG_WRITE_gAMA_SUPPORTED
if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 &&
@ -374,11 +370,6 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)
png_benign_error(png_ptr, "Wrote palette index exceeding num_palette");
#endif
#ifdef PNG_WRITE_APNG_SUPPORTED
if (png_ptr->num_frames_written != png_ptr->num_frames_to_write)
png_error(png_ptr, "Not enough frames written");
#endif
/* See if user wants us to write information chunks */
if (info_ptr != NULL)
{
@ -498,6 +489,16 @@ png_convert_from_time_t(png_timep ptime, time_t ttime)
png_debug(1, "in png_convert_from_time_t");
tbuf = gmtime(&ttime);
if (tbuf == NULL)
{
/* TODO: add a safe function which takes a png_ptr argument and raises
* a png_error if the ttime argument is invalid and the call to gmtime
* fails as a consequence.
*/
memset(ptime, 0, sizeof(*ptime));
return;
}
png_convert_from_struct_tm(ptime, tbuf);
}
#endif
@ -1470,43 +1471,6 @@ png_write_png(png_structrp png_ptr, png_inforp info_ptr,
}
#endif
#ifdef PNG_WRITE_APNG_SUPPORTED
void PNGAPI
png_write_frame_head(png_structp png_ptr, png_infop info_ptr,
png_bytepp row_pointers, png_uint_32 width, png_uint_32 height,
png_uint_32 x_offset, png_uint_32 y_offset,
png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
png_byte blend_op)
{
png_debug(1, "in png_write_frame_head");
/* there is a chance this has been set after png_write_info was called,
* so it would be set but not written. is there a way to be sure? */
if (!(info_ptr->valid & PNG_INFO_acTL))
png_error(png_ptr, "png_write_frame_head(): acTL not set");
png_write_reset(png_ptr);
png_write_reinit(png_ptr, info_ptr, width, height);
if ( !(png_ptr->num_frames_written == 0 &&
(png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN) ) )
png_write_fcTL(png_ptr, width, height, x_offset, y_offset,
delay_num, delay_den, dispose_op, blend_op);
PNG_UNUSED(row_pointers)
}
void PNGAPI
png_write_frame_tail(png_structp png_ptr, png_infop info_ptr)
{
png_debug(1, "in png_write_frame_tail");
png_ptr->num_frames_written++;
PNG_UNUSED(info_ptr)
}
#endif /* PNG_WRITE_APNG_SUPPORTED */
#ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
/* Initialize the write structure - general purpose utility. */

139
thirdparty/libpng/pngwutil.c vendored
View file

@ -821,11 +821,6 @@ png_write_IHDR(png_structrp png_ptr, png_uint_32 width, png_uint_32 height,
/* Write the chunk */
png_write_complete_chunk(png_ptr, png_IHDR, buf, 13);
#ifdef PNG_WRITE_APNG_SUPPORTED
png_ptr->first_frame_width = width;
png_ptr->first_frame_height = height;
#endif
if ((png_ptr->do_filter) == PNG_NO_FILTERS)
{
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE ||
@ -1007,17 +1002,8 @@ png_compress_IDAT(png_structrp png_ptr, png_const_bytep input,
optimize_cmf(data, png_image_size(png_ptr));
#endif
if (size > 0)
#ifdef PNG_WRITE_APNG_SUPPORTED
{
if (png_ptr->num_frames_written == 0)
#endif
png_write_complete_chunk(png_ptr, png_IDAT, data, size);
#ifdef PNG_WRITE_APNG_SUPPORTED
else
png_write_fdAT(png_ptr, data, size);
}
#endif /* PNG_WRITE_APNG_SUPPORTED */
if (size > 0)
png_write_complete_chunk(png_ptr, png_IDAT, data, size);
png_ptr->mode |= PNG_HAVE_IDAT;
png_ptr->zstream.next_out = data;
@ -1064,17 +1050,7 @@ png_compress_IDAT(png_structrp png_ptr, png_const_bytep input,
#endif
if (size > 0)
#ifdef PNG_WRITE_APNG_SUPPORTED
{
if (png_ptr->num_frames_written == 0)
#endif
png_write_complete_chunk(png_ptr, png_IDAT, data, size);
#ifdef PNG_WRITE_APNG_SUPPORTED
else
png_write_fdAT(png_ptr, data, size);
}
#endif /* PNG_WRITE_APNG_SUPPORTED */
png_ptr->zstream.avail_out = 0;
png_ptr->zstream.next_out = NULL;
png_ptr->mode |= PNG_HAVE_IDAT | PNG_AFTER_IDAT;
@ -1909,82 +1885,6 @@ png_write_tIME(png_structrp png_ptr, png_const_timep mod_time)
}
#endif
#ifdef PNG_WRITE_APNG_SUPPORTED
void /* PRIVATE */
png_write_acTL(png_structp png_ptr,
png_uint_32 num_frames, png_uint_32 num_plays)
{
png_byte buf[8];
png_debug(1, "in png_write_acTL");
png_ptr->num_frames_to_write = num_frames;
if (png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN)
num_frames--;
png_save_uint_32(buf, num_frames);
png_save_uint_32(buf + 4, num_plays);
png_write_complete_chunk(png_ptr, png_acTL, buf, (png_size_t)8);
}
void /* PRIVATE */
png_write_fcTL(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
png_uint_32 x_offset, png_uint_32 y_offset,
png_uint_16 delay_num, png_uint_16 delay_den, png_byte dispose_op,
png_byte blend_op)
{
png_byte buf[26];
png_debug(1, "in png_write_fcTL");
if (png_ptr->num_frames_written == 0 && (x_offset != 0 || y_offset != 0))
png_error(png_ptr, "x and/or y offset for the first frame aren't 0");
if (png_ptr->num_frames_written == 0 &&
(width != png_ptr->first_frame_width ||
height != png_ptr->first_frame_height))
png_error(png_ptr, "width and/or height in the first frame's fcTL "
"don't match the ones in IHDR");
/* more error checking */
png_ensure_fcTL_is_valid(png_ptr, width, height, x_offset, y_offset,
delay_num, delay_den, dispose_op, blend_op);
png_save_uint_32(buf, png_ptr->next_seq_num);
png_save_uint_32(buf + 4, width);
png_save_uint_32(buf + 8, height);
png_save_uint_32(buf + 12, x_offset);
png_save_uint_32(buf + 16, y_offset);
png_save_uint_16(buf + 20, delay_num);
png_save_uint_16(buf + 22, delay_den);
buf[24] = dispose_op;
buf[25] = blend_op;
png_write_complete_chunk(png_ptr, png_fcTL, buf, (png_size_t)26);
png_ptr->next_seq_num++;
}
void /* PRIVATE */
png_write_fdAT(png_structp png_ptr,
png_const_bytep data, png_size_t length)
{
png_byte buf[4];
png_write_chunk_header(png_ptr, png_fdAT, (png_uint_32)(4 + length));
png_save_uint_32(buf, png_ptr->next_seq_num);
png_write_chunk_data(png_ptr, buf, 4);
png_write_chunk_data(png_ptr, data, length);
png_write_chunk_end(png_ptr);
png_ptr->next_seq_num++;
}
#endif /* PNG_WRITE_APNG_SUPPORTED */
/* Initializes the row writing capability of libpng */
void /* PRIVATE */
png_write_start_row(png_structrp png_ptr)
@ -2878,39 +2778,4 @@ png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row,
}
#endif /* WRITE_FLUSH */
}
#ifdef PNG_WRITE_APNG_SUPPORTED
void /* PRIVATE */
png_write_reset(png_structp png_ptr)
{
png_ptr->row_number = 0;
png_ptr->pass = 0;
png_ptr->mode &= ~PNG_HAVE_IDAT;
}
void /* PRIVATE */
png_write_reinit(png_structp png_ptr, png_infop info_ptr,
png_uint_32 width, png_uint_32 height)
{
if (png_ptr->num_frames_written == 0 &&
(width != png_ptr->first_frame_width ||
height != png_ptr->first_frame_height))
png_error(png_ptr, "width and/or height in the first frame's fcTL "
"don't match the ones in IHDR");
if (width > png_ptr->first_frame_width ||
height > png_ptr->first_frame_height)
png_error(png_ptr, "width and/or height for a frame greater than"
"the ones in IHDR");
png_set_IHDR(png_ptr, info_ptr, width, height,
info_ptr->bit_depth, info_ptr->color_type,
info_ptr->interlace_type, info_ptr->compression_type,
info_ptr->filter_type);
png_ptr->width = width;
png_ptr->height = height;
png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width);
png_ptr->usr_width = png_ptr->width;
}
#endif /* PNG_WRITE_APNG_SUPPORTED */
#endif /* WRITE */