From 2f7d7adfcf4bec55fa5e007947e4a455e85d8930 Mon Sep 17 00:00:00 2001 From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com> Date: Tue, 20 Jan 2026 18:01:12 +0100 Subject: Update bundled libpng to last upstream version 1.6.54 --- documentation/src/bundled-libs.dox | 4 +- png/ANNOUNCE | 36 +- png/CHANGES | 53 ++ png/LICENSE | 4 +- png/README | 2 +- png/arm/filter_neon_intrinsics.c | 14 +- png/libpng-manual.txt | 17 +- png/libpng.3 | 21 +- png/libpngpf.3 | 4 +- png/png.5 | 63 +- png/png.c | 37 +- png/png.h | 1123 ++++++++++++++++++++---------------- png/pngconf.h | 4 +- png/pngdebug.h | 3 - png/pngerror.c | 155 +---- png/pngget.c | 13 +- png/pnglibconf.h | 4 +- png/pngmem.c | 19 +- png/pngpriv.h | 929 +++++++++++++++++------------ png/pngread.c | 255 +++++--- png/pngrtran.c | 119 ++-- png/pngrutil.c | 6 +- png/pngstruct.h | 1 - png/pngtrans.c | 4 +- png/pngwrite.c | 55 +- png/pngwutil.c | 8 +- 26 files changed, 1684 insertions(+), 1269 deletions(-) diff --git a/documentation/src/bundled-libs.dox b/documentation/src/bundled-libs.dox index b9e425230..c58d30713 100644 --- a/documentation/src/bundled-libs.dox +++ b/documentation/src/bundled-libs.dox @@ -23,12 +23,12 @@ The nanosvg library is not affected. \section bundled-status Current status \code -Current versions of bundled libraries (as of Sept 13, 2025): +Current versions of bundled libraries (as of Jan 20, 2026): Library Version/git commit Release date FLTK Version -------------------------------------------------------------------------- jpeg jpeg-9f 2024-01-14 1.4.0 nanosvg 7aeda550a8 [1] 2023-12-02 1.4.0 - png libpng-1.6.50 2025-07-01 1.5.0 + png libpng-1.6.54 2026-01-12 1.5.0 zlib zlib-1.3.1 2024-01-22 1.4.0 libdecor c4540b4a [2] 2025-08-15 1.5.0 -------------------------------------------------------------------------- diff --git a/png/ANNOUNCE b/png/ANNOUNCE index 516e07808..fb6eee581 100644 --- a/png/ANNOUNCE +++ b/png/ANNOUNCE @@ -1,5 +1,5 @@ -libpng 1.6.50 - July 1, 2025 -============================ +libpng 1.6.54 - January 12, 2026 +================================ This is a public release of libpng, intended for use in production code. @@ -7,15 +7,12 @@ This is a public release of libpng, intended for use in production code. Files available for download ---------------------------- -Source files with LF line endings (for Unix/Linux): +Source files: - * libpng-1.6.50.tar.xz (LZMA-compressed, recommended) - * libpng-1.6.50.tar.gz (deflate-compressed) - -Source files with CRLF line endings (for Windows): - - * lpng1650.7z (LZMA-compressed, recommended) - * lpng1650.zip (deflate-compressed) + * libpng-1.6.54.tar.xz (LZMA-compressed, recommended) + * libpng-1.6.54.tar.gz (deflate-compressed) + * lpng1654.7z (LZMA-compressed) + * lpng1654.zip (deflate-compressed) Other information: @@ -25,19 +22,16 @@ Other information: * TRADEMARK.md -Changes from version 1.6.49 to version 1.6.50 +Changes from version 1.6.53 to version 1.6.54 --------------------------------------------- - * Improved the detection of the RVV Extension on the RISC-V platform. - (Contributed by Filip Wasil) - * Replaced inline ASM with C intrinsics in the RVV code. - (Contributed by Filip Wasil) - * Fixed a decoder defect in which unknown chunks trailing IDAT, set - to go through the unknown chunk handler, incorrectly triggered - out-of-place IEND errors. - (Contributed by John Bowler) - * Fixed the CMake file for cross-platform builds that require `libm`. - + * Fixed CVE-2026-22695 (medium severity): + Heap buffer over-read in `png_image_read_direct_scaled. + (Reported and fixed by Petr Simecek.) + * Fixed CVE-2026-22801 (medium severity): + Integer truncation causing heap buffer over-read in `png_image_write_*`. + * Implemented various improvements in oss-fuzz. + (Contributed by Philippe Antoine.) Send comments/corrections/commendations to png-mng-implement at lists.sf.net. Subscription is required; visit diff --git a/png/CHANGES b/png/CHANGES index b6499b1f3..3bb1baecd 100644 --- a/png/CHANGES +++ b/png/CHANGES @@ -6278,6 +6278,59 @@ Version 1.6.50 [July 1, 2025] (Contributed by John Bowler) Fixed the CMake file for cross-platform builds that require `libm`. +Version 1.6.51 [November 21, 2025] + Fixed CVE-2025-64505 (moderate severity): + Heap buffer overflow in `png_do_quantize` via malformed palette index. + (Reported by Samsung; analyzed by Fabio Gritti.) + Fixed CVE-2025-64506 (moderate severity): + Heap buffer over-read in `png_write_image_8bit` with 8-bit input and + `convert_to_8bit` enabled. + (Reported by Samsung and ; + analyzed by Fabio Gritti.) + Fixed CVE-2025-64720 (high severity): + Buffer overflow in `png_image_read_composite` via incorrect palette + premultiplication. + (Reported by Samsung; analyzed by John Bowler.) + Fixed CVE-2025-65018 (high severity): + Heap buffer overflow in `png_combine_row` triggered via + `png_image_finish_read`. + (Reported by .) + Fixed a memory leak in `png_set_quantize`. + (Reported by Samsung; analyzed by Fabio Gritti.) + Removed the experimental and incomplete ERROR_NUMBERS code. + (Contributed by Tobias Stoeckmann.) + Improved the RISC-V vector extension support; required RVV 1.0 or newer. + (Contributed by Filip Wasil.) + Added GitHub Actions workflows for automated testing. + Performed various refactorings and cleanups. + +Version 1.6.52 [December 3, 2025] + Fixed CVE-2025-66293 (high severity): + Out-of-bounds read in `png_image_read_composite`. + (Reported by flyfish101 .) + Fixed the Paeth filter handling in the RISC-V RVV implementation. + (Reported by Filip Wasil; fixed by Liang Junzhao.) + Improved the performance of the RISC-V RVV implementation. + (Contributed by Liang Junzhao.) + Added allocation failure fuzzing to oss-fuzz. + (Contributed by Philippe Antoine.) + +Version 1.6.53 [December 5, 2025] + Fixed a build failure on RISC-V RVV caused by a misspelled intrinsic. + (Contributed by Alexander Smorkalov.) + Fixed a build failure with CMake 4.1 or newer, on Windows, when using + Visual C++ without MASM installed. + +Version 1.6.54 [January 12, 2026] + Fixed CVE-2026-22695 (medium severity): + Heap buffer over-read in `png_image_read_direct_scaled. + (Reported and fixed by Petr Simecek.) + Fixed CVE-2026-22801 (medium severity): + Integer truncation causing heap buffer over-read in `png_image_write_*`. + Implemented various improvements in oss-fuzz. + (Contributed by Philippe Antoine.) + + Send comments/corrections/commendations to png-mng-implement at lists.sf.net. Subscription is required; visit https://lists.sourceforge.net/lists/listinfo/png-mng-implement diff --git a/png/LICENSE b/png/LICENSE index ea6df986c..1b765ae9f 100644 --- a/png/LICENSE +++ b/png/LICENSE @@ -4,8 +4,8 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE PNG Reference Library License version 2 --------------------------------------- - * Copyright (c) 1995-2025 The PNG Reference Library Authors. - * Copyright (c) 2018-2025 Cosmin Truta. + * Copyright (c) 1995-2026 The PNG Reference Library Authors. + * Copyright (c) 2018-2026 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. diff --git a/png/README b/png/README index 2eb633ac0..63d1376ed 100644 --- a/png/README +++ b/png/README @@ -1,4 +1,4 @@ -README for libpng version 1.6.50 +README for libpng version 1.6.54 ================================ See the note about version numbers near the top of `png.h`. diff --git a/png/arm/filter_neon_intrinsics.c b/png/arm/filter_neon_intrinsics.c index 7c3e0da4d..6c3f1184a 100644 --- a/png/arm/filter_neon_intrinsics.c +++ b/png/arm/filter_neon_intrinsics.c @@ -48,7 +48,7 @@ void png_read_filter_row_up_neon(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) + png_const_bytep prev_row) { png_bytep rp = row; png_bytep rp_stop = row + row_info->rowbytes; @@ -69,7 +69,7 @@ png_read_filter_row_up_neon(png_row_infop row_info, png_bytep row, void png_read_filter_row_sub3_neon(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) + png_const_bytep prev_row) { png_bytep rp = row; png_bytep rp_stop = row + row_info->rowbytes; @@ -116,7 +116,7 @@ png_read_filter_row_sub3_neon(png_row_infop row_info, png_bytep row, void png_read_filter_row_sub4_neon(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) + png_const_bytep prev_row) { png_bytep rp = row; png_bytep rp_stop = row + row_info->rowbytes; @@ -148,7 +148,7 @@ png_read_filter_row_sub4_neon(png_row_infop row_info, png_bytep row, void png_read_filter_row_avg3_neon(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) + png_const_bytep prev_row) { png_bytep rp = row; png_const_bytep pp = prev_row; @@ -216,7 +216,7 @@ png_read_filter_row_avg3_neon(png_row_infop row_info, png_bytep row, void png_read_filter_row_avg4_neon(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) + png_const_bytep prev_row) { png_bytep rp = row; png_bytep rp_stop = row + row_info->rowbytes; @@ -285,7 +285,7 @@ paeth(uint8x8_t a, uint8x8_t b, uint8x8_t c) void png_read_filter_row_paeth3_neon(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) + png_const_bytep prev_row) { png_bytep rp = row; png_const_bytep pp = prev_row; @@ -353,7 +353,7 @@ png_read_filter_row_paeth3_neon(png_row_infop row_info, png_bytep row, void png_read_filter_row_paeth4_neon(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) + png_const_bytep prev_row) { png_bytep rp = row; png_bytep rp_stop = row + row_info->rowbytes; diff --git a/png/libpng-manual.txt b/png/libpng-manual.txt index 6c07e1022..bef2cb2b4 100644 --- a/png/libpng-manual.txt +++ b/png/libpng-manual.txt @@ -9,9 +9,9 @@ libpng-manual.txt - A description on how to use and modify libpng Based on: - libpng version 1.6.36, December 2018, through 1.6.50 - July 2025 + libpng version 1.6.36, December 2018, through 1.6.54 - January 2026 Updated and distributed by Cosmin Truta - Copyright (c) 2018-2025 Cosmin Truta + Copyright (c) 2018-2026 Cosmin Truta libpng versions 0.97, January 1998, through 1.6.35 - July 2018 Updated and distributed by Glenn Randers-Pehrson @@ -3355,19 +3355,6 @@ Here is an example of writing two private chunks, prVt and miNE: /* Needed because miNE is not safe-to-copy */ png_set_keep_unknown_chunks(png, PNG_HANDLE_CHUNK_ALWAYS, (png_bytep) "miNE", 1); - # if PNG_LIBPNG_VER < 10600 - /* Deal with unknown chunk location bug in 1.5.x and earlier */ - png_set_unknown_chunk_location(png, info, 0, PNG_HAVE_IHDR); - png_set_unknown_chunk_location(png, info, 1, PNG_AFTER_IDAT); - # endif - # if PNG_LIBPNG_VER < 10500 - /* PNG_AFTER_IDAT writes two copies of the chunk prior to libpng-1.5.0, - * one before IDAT and another after IDAT, so don't use it; only use - * PNG_HAVE_IHDR location. This call resets the location previously - * set by assignment and png_set_unknown_chunk_location() for chunk 1. - */ - png_set_unknown_chunk_location(png, info, 1, PNG_HAVE_IHDR); - # endif #endif The high-level write interface diff --git a/png/libpng.3 b/png/libpng.3 index 8980a252b..481ddebb4 100644 --- a/png/libpng.3 +++ b/png/libpng.3 @@ -1,6 +1,6 @@ -.TH LIBPNG 3 "July 1, 2025" +.TH LIBPNG 3 "January 12, 2026" .SH NAME -libpng \- Portable Network Graphics (PNG) Reference Library 1.6.50 +libpng \- Portable Network Graphics (PNG) Reference Library 1.6.54 .SH SYNOPSIS \fB#include \fP @@ -528,9 +528,9 @@ libpng-manual.txt - A description on how to use and modify libpng Based on: - libpng version 1.6.36, December 2018, through 1.6.50 - July 2025 + libpng version 1.6.36, December 2018, through 1.6.54 - January 2026 Updated and distributed by Cosmin Truta - Copyright (c) 2018-2025 Cosmin Truta + Copyright (c) 2018-2026 Cosmin Truta libpng versions 0.97, January 1998, through 1.6.35 - July 2018 Updated and distributed by Glenn Randers-Pehrson @@ -3874,19 +3874,6 @@ Here is an example of writing two private chunks, prVt and miNE: /* Needed because miNE is not safe-to-copy */ png_set_keep_unknown_chunks(png, PNG_HANDLE_CHUNK_ALWAYS, (png_bytep) "miNE", 1); - # if PNG_LIBPNG_VER < 10600 - /* Deal with unknown chunk location bug in 1.5.x and earlier */ - png_set_unknown_chunk_location(png, info, 0, PNG_HAVE_IHDR); - png_set_unknown_chunk_location(png, info, 1, PNG_AFTER_IDAT); - # endif - # if PNG_LIBPNG_VER < 10500 - /* PNG_AFTER_IDAT writes two copies of the chunk prior to libpng-1.5.0, - * one before IDAT and another after IDAT, so don't use it; only use - * PNG_HAVE_IHDR location. This call resets the location previously - * set by assignment and png_set_unknown_chunk_location() for chunk 1. - */ - png_set_unknown_chunk_location(png, info, 1, PNG_HAVE_IHDR); - # endif #endif .SS The high-level write interface diff --git a/png/libpngpf.3 b/png/libpngpf.3 index e3788f18c..3be6a55d8 100644 --- a/png/libpngpf.3 +++ b/png/libpngpf.3 @@ -1,6 +1,6 @@ -.TH LIBPNGPF 3 "July 1, 2025" +.TH LIBPNGPF 3 "January 12, 2026" .SH NAME -libpng \- Portable Network Graphics (PNG) Reference Library 1.6.50 +libpng \- Portable Network Graphics (PNG) Reference Library 1.6.54 .SH SYNOPSIS \fB#include "pngpriv.h"\fP diff --git a/png/png.5 b/png/png.5 index c230915b4..8bf1b54cb 100644 --- a/png/png.5 +++ b/png/png.5 @@ -1,4 +1,4 @@ -.TH PNG 5 "July 1, 2025" +.TH PNG 5 "January 12, 2026" .SH NAME png \- Portable Network Graphics (PNG) format @@ -6,73 +6,76 @@ png \- Portable Network Graphics (PNG) format PNG (Portable Network Graphics) is an extensible file format for the lossless, portable, well-compressed storage of raster images. PNG provides a patent-free replacement for GIF, and can also replace many -common uses of TIFF. Indexed-color, grayscale, and truecolor images are -supported, plus an optional alpha channel. Sample depths range from -1 to 16 bits. -.br +common uses of TIFF. Indexed-color, grayscale, and truecolor images +are supported, plus an optional alpha channel. Sample depths range +from 1 to 16 bits. +.P PNG is designed to work well in online viewing applications, such as the World Wide Web, so it is fully streamable with a progressive display option. PNG is robust, providing both full file integrity checking and fast, simple detection of common transmission errors. -Also, PNG can store gamma and chromaticity data for improved color -matching on heterogeneous platforms. +Also, PNG can store color space data for improved color matching on +heterogeneous platforms. .SH "SEE ALSO" .BR "libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5) .LP -PNG Specification (Third Edition), June 2025: +Portable Network Graphics (PNG) Specification (Third Edition): .IP .br +W3C Recommendation 24 June 2025 +.br https://www.w3.org/TR/2025/REC-png-3-20250624/ .LP -PNG Specification (Second Edition), November 2003: +Portable Network Graphics (PNG) Specification (Second Edition): +.IP +.br +ISO/IEC 15948:2004(E) +.br +https://www.iso.org/standard/29581.html .IP .br +W3C Recommendation 10 November 2003 +.br https://www.w3.org/TR/2003/REC-PNG-20031110/ .LP -PNG 1.2 Specification, August 1999: +Portable Network Graphics (PNG) Specification Version 1.2: .IP .br +Published by the PNG Development Group on 14 July 1999 +.br https://www.libpng.org/pub/png/spec/1.2/ .LP -PNG 1.1 Specification, December 1998: +Portable Network Graphics (PNG) Specification Version 1.1: .IP .br +Published by the PNG Development Group on 15 February 1999 +.br https://www.libpng.org/pub/png/spec/1.1/ .LP -PNG 1.0 Specification, October 1996: +Portable Network Graphics (PNG) Specification Version 1.0: .IP .br -RFC 2083 +IETF RFC 2083, March 1997 .br https://www.ietf.org/rfc/rfc2083.txt .IP .br -or W3C Recommendation +W3C Recommendation 1 October 1996 .br https://www.w3.org/TR/REC-png-961001 .SH AUTHORS -This man page: Glenn Randers-Pehrson, Cosmin Truta +This man page: Glenn Randers-Pehrson, Cosmin Truta, Chris Lilley. .LP -Portable Network Graphics (PNG) Specification (Third Edition). -W3C Recommendation 24 June 2025: -Chris Blume et al. +PNG Specification (Third Edition): Chris Blume et al. .LP -Portable Network Graphics (PNG) Specification (Second Edition) -Information technology - Computer graphics and image processing - -Portable Network Graphics (PNG): Functional specification. -ISO/IEC 15948:2003 (E), W3C Recommendation 10 November 2003: -David Duce et al. +PNG Specification (Second Edition): David Duce et al. .LP -Portable Network Graphics (PNG) Specification Version 1.2 (11 August 1999): -Glenn Randers-Pehrson et al. +PNG Specification Version 1.2: Glenn Randers-Pehrson et al. .LP -Portable Network Graphics (PNG) Specification Version 1.1 (31 December 1998): -Glenn Randers-Pehrson et al. +PNG Specification Version 1.1: Glenn Randers-Pehrson et al. .LP -Portable Network Graphics (PNG) Specification Version 1.0. -IETF RFC 2083, W3C Recommendation 1 October 1996: -Thomas Boutell et al. +PNG Specification Version 1.0: Thomas Boutell et al. .\" end of man page diff --git a/png/png.c b/png/png.c index 6e21915c4..d184a306d 100644 --- a/png/png.c +++ b/png/png.c @@ -1,6 +1,6 @@ /* png.c - location for general purpose libpng functions * - * Copyright (c) 2018-2025 Cosmin Truta + * Copyright (c) 2018-2026 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. @@ -13,7 +13,7 @@ #include "pngpriv.h" /* Generate a compiler error if there is an old png.h in the search path. */ -typedef png_libpng_version_1_6_50 Your_png_h_is_not_version_1_6_50; +typedef png_libpng_version_1_6_54 Your_png_h_is_not_version_1_6_54; /* Sanity check the chunks definitions - PNG_KNOWN_CHUNKS from pngpriv.h and the * corresponding macro definitions. This causes a compile time failure if @@ -101,17 +101,24 @@ png_sig_cmp(png_const_bytep sig, size_t start, size_t num_to_check) #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) /* Function to allocate memory for zlib */ PNG_FUNCTION(voidpf /* PRIVATE */, -png_zalloc,(voidpf png_ptr, uInt items, uInt size),PNG_ALLOCATED) +png_zalloc,(voidpf png_ptr, uInt items, uInt size), + PNG_ALLOCATED) { png_alloc_size_t num_bytes = size; if (png_ptr == NULL) return NULL; - if (items >= (~(png_alloc_size_t)0)/size) + /* This check against overflow is vestigial, dating back from + * the old times when png_zalloc used to be an exported function. + * We're still keeping it here for now, as an extra-cautious + * prevention against programming errors inside zlib, although it + * should rather be a debug-time assertion instead. + */ + if (size != 0 && items >= (~(png_alloc_size_t)0) / size) { - png_warning (png_voidcast(png_structrp, png_ptr), - "Potential overflow in png_zalloc()"); + png_warning(png_voidcast(png_structrp, png_ptr), + "Potential overflow in png_zalloc()"); return NULL; } @@ -238,10 +245,6 @@ png_user_version_check(png_structrp png_ptr, png_const_charp user_png_ver) png_warning(png_ptr, m); #endif -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - png_ptr->flags = 0; -#endif - return 0; } @@ -255,7 +258,8 @@ png_user_version_check(png_structrp png_ptr, png_const_charp user_png_ver) PNG_FUNCTION(png_structp /* PRIVATE */, png_create_png_struct,(png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, - png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED) + png_malloc_ptr malloc_fn, png_free_ptr free_fn), + PNG_ALLOCATED) { png_struct create_struct; # ifdef PNG_SETJMP_SUPPORTED @@ -359,7 +363,8 @@ png_create_png_struct,(png_const_charp user_png_ver, png_voidp error_ptr, /* Allocate the memory for an info_struct for the application. */ PNG_FUNCTION(png_infop,PNGAPI -png_create_info_struct,(png_const_structrp png_ptr),PNG_ALLOCATED) +png_create_info_struct,(png_const_structrp png_ptr), + PNG_ALLOCATED) { png_inforp info_ptr; @@ -815,8 +820,8 @@ png_get_copyright(png_const_structrp png_ptr) return PNG_STRING_COPYRIGHT #else return PNG_STRING_NEWLINE \ - "libpng version 1.6.50" PNG_STRING_NEWLINE \ - "Copyright (c) 2018-2025 Cosmin Truta" PNG_STRING_NEWLINE \ + "libpng version 1.6.54" PNG_STRING_NEWLINE \ + "Copyright (c) 2018-2026 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 \ @@ -2255,8 +2260,8 @@ PNG_FP_End: int png_check_fp_string(png_const_charp string, size_t size) { - int state=0; - size_t char_index=0; + int state = 0; + size_t char_index = 0; if (png_check_fp_number(string, size, &state, &char_index) != 0 && (char_index == size || string[char_index] == 0)) diff --git a/png/png.h b/png/png.h index b9985e816..84ddff198 100644 --- a/png/png.h +++ b/png/png.h @@ -1,8 +1,8 @@ /* png.h - header file for PNG reference library * - * libpng version 1.6.50 + * libpng version 1.6.54 * - * Copyright (c) 2018-2025 Cosmin Truta + * Copyright (c) 2018-2026 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 @@ * 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 1.6.50, July 2025: + * libpng versions 1.6.36, December 2018, through 1.6.54, January 2026: * Cosmin Truta * See also "Contributing Authors", below. */ @@ -26,8 +26,8 @@ * PNG Reference Library License version 2 * --------------------------------------- * - * * Copyright (c) 1995-2025 The PNG Reference Library Authors. - * * Copyright (c) 2018-2025 Cosmin Truta. + * * Copyright (c) 1995-2026 The PNG Reference Library Authors. + * * Copyright (c) 2018-2026 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. @@ -238,7 +238,7 @@ * ... * 1.5.30 15 10530 15.so.15.30[.0] * ... - * 1.6.50 16 10650 16.so.16.50[.0] + * 1.6.54 16 10654 16.so.16.54[.0] * * Henceforth the source version will match the shared-library major and * minor numbers; the shared-library major version number will be used for @@ -274,7 +274,7 @@ */ /* Version information for png.h - this should match the version in png.c */ -#define PNG_LIBPNG_VER_STRING "1.6.50" +#define PNG_LIBPNG_VER_STRING "1.6.54" #define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n" /* The versions of shared library builds should stay in sync, going forward */ @@ -285,7 +285,7 @@ /* 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 50 +#define PNG_LIBPNG_VER_RELEASE 54 /* This should be zero for a public release, or non-zero for a * development version. @@ -316,7 +316,7 @@ * From version 1.0.1 it is: * XXYYZZ, where XX=major, YY=minor, ZZ=release */ -#define PNG_LIBPNG_VER 10650 /* 1.6.50 */ +#define PNG_LIBPNG_VER 10654 /* 1.6.54 */ /* Library configuration: these options cannot be changed after * the library has been built. @@ -426,7 +426,7 @@ extern "C" { /* 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_50; +typedef char *png_libpng_version_1_6_54; /* Basic control structions. Read libpng-manual.txt or libpng.3 for more info. * @@ -785,17 +785,22 @@ typedef png_row_info * * png_row_infopp; * modify the buffer it is passed. The 'read' function, on the other hand, is * expected to return the read data in the buffer. */ -typedef PNG_CALLBACK(void, *png_error_ptr, (png_structp, png_const_charp)); -typedef PNG_CALLBACK(void, *png_rw_ptr, (png_structp, png_bytep, size_t)); -typedef PNG_CALLBACK(void, *png_flush_ptr, (png_structp)); -typedef PNG_CALLBACK(void, *png_read_status_ptr, (png_structp, png_uint_32, - int)); -typedef PNG_CALLBACK(void, *png_write_status_ptr, (png_structp, png_uint_32, - int)); +typedef PNG_CALLBACK(void, *png_error_ptr, + (png_structp, png_const_charp)); +typedef PNG_CALLBACK(void, *png_rw_ptr, + (png_structp, png_bytep, size_t)); +typedef PNG_CALLBACK(void, *png_flush_ptr, + (png_structp)); +typedef PNG_CALLBACK(void, *png_read_status_ptr, + (png_structp, png_uint_32, int)); +typedef PNG_CALLBACK(void, *png_write_status_ptr, + (png_structp, png_uint_32, int)); #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)); +typedef PNG_CALLBACK(void, *png_progressive_info_ptr, + (png_structp, png_infop)); +typedef PNG_CALLBACK(void, *png_progressive_end_ptr, + (png_structp, png_infop)); /* 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 @@ -807,19 +812,19 @@ typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop)); * find the output pixel (x,y) given an interlaced sub-image pixel * (row,col,pass). (See below for these macros.) */ -typedef PNG_CALLBACK(void, *png_progressive_row_ptr, (png_structp, png_bytep, - png_uint_32, int)); +typedef PNG_CALLBACK(void, *png_progressive_row_ptr, + (png_structp, png_bytep, png_uint_32, int)); #endif #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) -typedef PNG_CALLBACK(void, *png_user_transform_ptr, (png_structp, png_row_infop, - png_bytep)); +typedef PNG_CALLBACK(void, *png_user_transform_ptr, + (png_structp, png_row_infop, png_bytep)); #endif #ifdef PNG_USER_CHUNKS_SUPPORTED -typedef PNG_CALLBACK(int, *png_user_chunk_ptr, (png_structp, - png_unknown_chunkp)); +typedef PNG_CALLBACK(int, *png_user_chunk_ptr, + (png_structp, png_unknown_chunkp)); #endif #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED /* not used anywhere */ @@ -877,9 +882,10 @@ PNG_FUNCTION(void, (PNGCAPI *png_longjmp_ptr), (jmp_buf, int), typedef); * ignores the first argument) should be completely compatible with the * following. */ -typedef PNG_CALLBACK(png_voidp, *png_malloc_ptr, (png_structp, - png_alloc_size_t)); -typedef PNG_CALLBACK(void, *png_free_ptr, (png_structp, png_voidp)); +typedef PNG_CALLBACK(png_voidp, *png_malloc_ptr, + (png_structp, png_alloc_size_t)); +typedef PNG_CALLBACK(void, *png_free_ptr, + (png_structp, png_voidp)); /* Section 4: exported functions * Here are the function definitions most commonly used. This is not @@ -911,20 +917,22 @@ typedef PNG_CALLBACK(void, *png_free_ptr, (png_structp, png_voidp)); */ /* Returns the version number of the library */ -PNG_EXPORT(1, png_uint_32, png_access_version_number, (void)); +PNG_EXPORT(1, png_uint_32, png_access_version_number, + (void)); /* Tell lib we have already handled the first magic bytes. * Handling more than 8 bytes from the beginning of the file is an error. */ -PNG_EXPORT(2, void, png_set_sig_bytes, (png_structrp png_ptr, int num_bytes)); +PNG_EXPORT(2, void, png_set_sig_bytes, + (png_structrp png_ptr, int num_bytes)); /* Check sig[start] through sig[start + num_to_check - 1] to see if it's a * PNG file. Returns zero if the supplied bytes match the 8-byte PNG * signature, and non-zero otherwise. Having num_to_check == 0 or * start > 7 will always fail (i.e. return non-zero). */ -PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, size_t start, - size_t num_to_check)); +PNG_EXPORT(3, int, png_sig_cmp, + (png_const_bytep sig, size_t start, size_t num_to_check)); /* Simple signature checking function. This is the same as calling * png_check_sig(sig, n) := (png_sig_cmp(sig, 0, n) == 0). @@ -933,21 +941,21 @@ PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, size_t start, /* Allocate and initialize png_ptr struct for reading, and any other memory. */ PNG_EXPORTA(4, png_structp, png_create_read_struct, - (png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn), - PNG_ALLOCATED); + (png_const_charp user_png_ver, + png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn), + PNG_ALLOCATED); /* Allocate and initialize png_ptr struct for writing, and any other memory */ PNG_EXPORTA(5, png_structp, png_create_write_struct, - (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, - png_error_ptr warn_fn), - PNG_ALLOCATED); + (png_const_charp user_png_ver, + png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn), + PNG_ALLOCATED); PNG_EXPORT(6, size_t, png_get_compression_buffer_size, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); -PNG_EXPORT(7, void, png_set_compression_buffer_size, (png_structrp png_ptr, - size_t size)); +PNG_EXPORT(7, void, png_set_compression_buffer_size, + (png_structrp png_ptr, size_t size)); /* Moved from pngconf.h in 1.4.0 and modified to ensure setjmp/longjmp * match up. @@ -960,8 +968,8 @@ PNG_EXPORT(7, void, png_set_compression_buffer_size, (png_structrp png_ptr, * allocated by the library - the call will return NULL on a mismatch * indicating an ABI mismatch. */ -PNG_EXPORT(8, jmp_buf*, png_set_longjmp_fn, (png_structrp png_ptr, - png_longjmp_ptr longjmp_fn, size_t jmp_buf_size)); +PNG_EXPORT(8, jmp_buf*, png_set_longjmp_fn, + (png_structrp 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 @@ -973,67 +981,77 @@ PNG_EXPORT(8, jmp_buf*, png_set_longjmp_fn, (png_structrp png_ptr, * will use it; otherwise it will call PNG_ABORT(). This function was * added in libpng-1.5.0. */ -PNG_EXPORTA(9, void, png_longjmp, (png_const_structrp png_ptr, int val), - PNG_NORETURN); +PNG_EXPORTA(9, void, png_longjmp, + (png_const_structrp png_ptr, int val), + PNG_NORETURN); #ifdef PNG_READ_SUPPORTED /* Reset the compression stream */ -PNG_EXPORTA(10, int, png_reset_zstream, (png_structrp png_ptr), PNG_DEPRECATED); +PNG_EXPORTA(10, int, png_reset_zstream, + (png_structrp png_ptr), + PNG_DEPRECATED); #endif /* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */ #ifdef PNG_USER_MEM_SUPPORTED PNG_EXPORTA(11, png_structp, 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_const_charp user_png_ver, + png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn), - PNG_ALLOCATED); + PNG_ALLOCATED); PNG_EXPORTA(12, png_structp, png_create_write_struct_2, - (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, - png_error_ptr warn_fn, + (png_const_charp user_png_ver, + png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn), - PNG_ALLOCATED); + PNG_ALLOCATED); #endif /* Write the PNG file signature. */ -PNG_EXPORT(13, void, png_write_sig, (png_structrp png_ptr)); +PNG_EXPORT(13, void, png_write_sig, + (png_structrp png_ptr)); /* Write a PNG chunk - size, type, (optional) data, CRC. */ -PNG_EXPORT(14, void, png_write_chunk, (png_structrp png_ptr, png_const_bytep - chunk_name, png_const_bytep data, size_t length)); +PNG_EXPORT(14, void, png_write_chunk, + (png_structrp png_ptr, + png_const_bytep chunk_name, png_const_bytep data, size_t length)); /* Write the start of a PNG chunk - length and chunk name. */ -PNG_EXPORT(15, void, png_write_chunk_start, (png_structrp png_ptr, +PNG_EXPORT(15, void, png_write_chunk_start, + (png_structrp png_ptr, png_const_bytep chunk_name, png_uint_32 length)); /* Write the data of a PNG chunk started with png_write_chunk_start(). */ -PNG_EXPORT(16, void, png_write_chunk_data, (png_structrp png_ptr, +PNG_EXPORT(16, void, png_write_chunk_data, + (png_structrp png_ptr, png_const_bytep data, size_t length)); /* Finish a chunk started with png_write_chunk_start() (includes CRC). */ -PNG_EXPORT(17, void, png_write_chunk_end, (png_structrp png_ptr)); +PNG_EXPORT(17, void, png_write_chunk_end, + (png_structrp png_ptr)); /* Allocate and initialize the info structure */ -PNG_EXPORTA(18, png_infop, png_create_info_struct, (png_const_structrp png_ptr), - PNG_ALLOCATED); +PNG_EXPORTA(18, png_infop, png_create_info_struct, + (png_const_structrp png_ptr), + PNG_ALLOCATED); /* DEPRECATED: this function allowed init structures to be created using the * default allocation method (typically malloc). Use is deprecated in 1.6.0 and * the API will be removed in the future. */ -PNG_EXPORTA(19, void, png_info_init_3, (png_infopp info_ptr, - size_t png_info_struct_size), PNG_DEPRECATED); +PNG_EXPORTA(19, void, png_info_init_3, + (png_infopp info_ptr, size_t png_info_struct_size), + PNG_DEPRECATED); /* Writes all the PNG information before the image. */ PNG_EXPORT(20, void, png_write_info_before_PLTE, - (png_structrp png_ptr, png_const_inforp info_ptr)); + (png_structrp png_ptr, png_const_inforp info_ptr)); PNG_EXPORT(21, void, png_write_info, - (png_structrp png_ptr, png_const_inforp info_ptr)); + (png_structrp png_ptr, png_const_inforp info_ptr)); #ifdef PNG_SEQUENTIAL_READ_SUPPORTED /* Read the information before the actual image data. */ PNG_EXPORT(22, void, png_read_info, - (png_structrp png_ptr, png_inforp info_ptr)); + (png_structrp png_ptr, png_inforp info_ptr)); #endif #ifdef PNG_TIME_RFC1123_SUPPORTED @@ -1043,45 +1061,54 @@ PNG_EXPORT(22, void, png_read_info, */ #if PNG_LIBPNG_VER < 10700 /* To do: remove this from libpng17 (and from libpng17/png.c and pngstruct.h) */ -PNG_EXPORTA(23, png_const_charp, png_convert_to_rfc1123, (png_structrp png_ptr, - png_const_timep ptime),PNG_DEPRECATED); +PNG_EXPORTA(23, png_const_charp, png_convert_to_rfc1123, + (png_structrp png_ptr, png_const_timep ptime), + PNG_DEPRECATED); #endif -PNG_EXPORT(241, int, png_convert_to_rfc1123_buffer, (char out[29], - png_const_timep ptime)); +PNG_EXPORT(241, int, png_convert_to_rfc1123_buffer, + (char out[29], png_const_timep ptime)); #endif #ifdef PNG_CONVERT_tIME_SUPPORTED /* Convert from a struct tm to png_time */ -PNG_EXPORT(24, void, png_convert_from_struct_tm, (png_timep ptime, - const struct tm * ttime)); +PNG_EXPORT(24, void, png_convert_from_struct_tm, + (png_timep ptime, const struct tm * ttime)); /* Convert from time_t to png_time. Uses gmtime() */ -PNG_EXPORT(25, void, png_convert_from_time_t, (png_timep ptime, time_t ttime)); +PNG_EXPORT(25, void, png_convert_from_time_t, + (png_timep ptime, time_t ttime)); #endif /* CONVERT_tIME */ #ifdef PNG_READ_EXPAND_SUPPORTED /* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */ -PNG_EXPORT(26, void, png_set_expand, (png_structrp png_ptr)); -PNG_EXPORT(27, void, png_set_expand_gray_1_2_4_to_8, (png_structrp png_ptr)); -PNG_EXPORT(28, void, png_set_palette_to_rgb, (png_structrp png_ptr)); -PNG_EXPORT(29, void, png_set_tRNS_to_alpha, (png_structrp png_ptr)); +PNG_EXPORT(26, void, png_set_expand, + (png_structrp png_ptr)); +PNG_EXPORT(27, void, png_set_expand_gray_1_2_4_to_8, + (png_structrp png_ptr)); +PNG_EXPORT(28, void, png_set_palette_to_rgb, + (png_structrp png_ptr)); +PNG_EXPORT(29, void, png_set_tRNS_to_alpha, + (png_structrp png_ptr)); #endif #ifdef PNG_READ_EXPAND_16_SUPPORTED /* Expand to 16-bit channels, forces conversion of palette to RGB and expansion * of a tRNS chunk if present. */ -PNG_EXPORT(221, void, png_set_expand_16, (png_structrp png_ptr)); +PNG_EXPORT(221, void, png_set_expand_16, + (png_structrp png_ptr)); #endif #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) /* Use blue, green, red order for pixels. */ -PNG_EXPORT(30, void, png_set_bgr, (png_structrp png_ptr)); +PNG_EXPORT(30, void, png_set_bgr, + (png_structrp png_ptr)); #endif #ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED /* Expand the grayscale to 24-bit RGB if necessary. */ -PNG_EXPORT(31, void, png_set_gray_to_rgb, (png_structrp png_ptr)); +PNG_EXPORT(31, void, png_set_gray_to_rgb, + (png_structrp png_ptr)); #endif #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED @@ -1091,18 +1118,20 @@ PNG_EXPORT(31, void, png_set_gray_to_rgb, (png_structrp png_ptr)); #define PNG_ERROR_ACTION_ERROR 3 #define PNG_RGB_TO_GRAY_DEFAULT (-1)/*for red/green coefficients*/ -PNG_FP_EXPORT(32, void, png_set_rgb_to_gray, (png_structrp png_ptr, +PNG_FP_EXPORT(32, void, png_set_rgb_to_gray, + (png_structrp png_ptr, int error_action, double red, double green)) -PNG_FIXED_EXPORT(33, void, png_set_rgb_to_gray_fixed, (png_structrp png_ptr, +PNG_FIXED_EXPORT(33, void, png_set_rgb_to_gray_fixed, + (png_structrp png_ptr, int error_action, png_fixed_point red, png_fixed_point green)) -PNG_EXPORT(34, png_byte, png_get_rgb_to_gray_status, (png_const_structrp - png_ptr)); +PNG_EXPORT(34, png_byte, png_get_rgb_to_gray_status, + (png_const_structrp png_ptr)); #endif #ifdef PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED -PNG_EXPORT(35, void, png_build_grayscale_palette, (int bit_depth, - png_colorp palette)); +PNG_EXPORT(35, void, png_build_grayscale_palette, + (int bit_depth, png_colorp palette)); #endif #ifdef PNG_READ_ALPHA_MODE_SUPPORTED @@ -1147,10 +1176,10 @@ PNG_EXPORT(35, void, png_build_grayscale_palette, (int bit_depth, #define PNG_ALPHA_OPTIMIZED 2 /* 'PNG' for opaque pixels, else 'STANDARD' */ #define PNG_ALPHA_BROKEN 3 /* the alpha channel is gamma encoded */ -PNG_FP_EXPORT(227, void, png_set_alpha_mode, (png_structrp png_ptr, int mode, - double output_gamma)) -PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structrp png_ptr, - int mode, png_fixed_point output_gamma)) +PNG_FP_EXPORT(227, void, png_set_alpha_mode, + (png_structrp png_ptr, int mode, double output_gamma)) +PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, + (png_structrp png_ptr, int mode, png_fixed_point output_gamma)) #endif #if defined(PNG_GAMMA_SUPPORTED) || defined(PNG_READ_ALPHA_MODE_SUPPORTED) @@ -1240,51 +1269,57 @@ PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structrp png_ptr, */ #ifdef PNG_READ_STRIP_ALPHA_SUPPORTED -PNG_EXPORT(36, void, png_set_strip_alpha, (png_structrp png_ptr)); +PNG_EXPORT(36, void, png_set_strip_alpha, + (png_structrp png_ptr)); #endif #if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \ defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) -PNG_EXPORT(37, void, png_set_swap_alpha, (png_structrp png_ptr)); +PNG_EXPORT(37, void, png_set_swap_alpha, + (png_structrp png_ptr)); #endif #if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \ defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) -PNG_EXPORT(38, void, png_set_invert_alpha, (png_structrp png_ptr)); +PNG_EXPORT(38, void, png_set_invert_alpha, + (png_structrp png_ptr)); #endif #if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) /* Add a filler byte to 8-bit or 16-bit Gray or 24-bit or 48-bit RGB images. */ -PNG_EXPORT(39, void, png_set_filler, (png_structrp png_ptr, png_uint_32 filler, - int flags)); +PNG_EXPORT(39, void, png_set_filler, + (png_structrp png_ptr, png_uint_32 filler, int flags)); /* The values of the PNG_FILLER_ defines should NOT be changed */ # define PNG_FILLER_BEFORE 0 # define PNG_FILLER_AFTER 1 /* Add an alpha byte to 8-bit or 16-bit Gray or 24-bit or 48-bit RGB images. */ -PNG_EXPORT(40, void, png_set_add_alpha, (png_structrp png_ptr, - png_uint_32 filler, int flags)); +PNG_EXPORT(40, void, png_set_add_alpha, + (png_structrp png_ptr, png_uint_32 filler, int flags)); #endif /* READ_FILLER || WRITE_FILLER */ #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) /* Swap bytes in 16-bit depth files. */ -PNG_EXPORT(41, void, png_set_swap, (png_structrp png_ptr)); +PNG_EXPORT(41, void, png_set_swap, + (png_structrp png_ptr)); #endif #if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED) /* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */ -PNG_EXPORT(42, void, png_set_packing, (png_structrp png_ptr)); +PNG_EXPORT(42, void, png_set_packing, + (png_structrp png_ptr)); #endif #if defined(PNG_READ_PACKSWAP_SUPPORTED) || \ defined(PNG_WRITE_PACKSWAP_SUPPORTED) /* Swap packing order of pixels in bytes. */ -PNG_EXPORT(43, void, png_set_packswap, (png_structrp png_ptr)); +PNG_EXPORT(43, void, png_set_packswap, + (png_structrp png_ptr)); #endif #if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) /* Converts files to legal bit depths. */ -PNG_EXPORT(44, void, png_set_shift, (png_structrp png_ptr, png_const_color_8p - true_bits)); +PNG_EXPORT(44, void, png_set_shift, + (png_structrp png_ptr, png_const_color_8p true_bits)); #endif #if defined(PNG_READ_INTERLACING_SUPPORTED) || \ @@ -1295,12 +1330,14 @@ PNG_EXPORT(44, void, png_set_shift, (png_structrp png_ptr, png_const_color_8p * necessary to call png_read_row or png_read_rows png_get_image_height * times for each pass. */ -PNG_EXPORT(45, int, png_set_interlace_handling, (png_structrp png_ptr)); +PNG_EXPORT(45, int, png_set_interlace_handling, + (png_structrp png_ptr)); #endif #if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) /* Invert monochrome files */ -PNG_EXPORT(46, void, png_set_invert_mono, (png_structrp png_ptr)); +PNG_EXPORT(46, void, png_set_invert_mono, + (png_structrp png_ptr)); #endif #ifdef PNG_READ_BACKGROUND_SUPPORTED @@ -1309,10 +1346,12 @@ PNG_EXPORT(46, void, png_set_invert_mono, (png_structrp png_ptr)); * read. Doing so will result in unexpected behavior and possible warnings or * errors if the PNG file contains a bKGD chunk. */ -PNG_FP_EXPORT(47, void, png_set_background, (png_structrp png_ptr, +PNG_FP_EXPORT(47, void, png_set_background, + (png_structrp png_ptr, png_const_color_16p background_color, int background_gamma_code, int need_expand, double background_gamma)) -PNG_FIXED_EXPORT(215, void, png_set_background_fixed, (png_structrp png_ptr, +PNG_FIXED_EXPORT(215, void, png_set_background_fixed, + (png_structrp png_ptr, png_const_color_16p background_color, int background_gamma_code, int need_expand, png_fixed_point background_gamma)) #endif @@ -1325,20 +1364,23 @@ PNG_FIXED_EXPORT(215, void, png_set_background_fixed, (png_structrp png_ptr, #ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED /* Scale a 16-bit depth file down to 8-bit, accurately. */ -PNG_EXPORT(229, void, png_set_scale_16, (png_structrp png_ptr)); +PNG_EXPORT(229, void, png_set_scale_16, + (png_structrp png_ptr)); #endif #ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED #define PNG_READ_16_TO_8_SUPPORTED /* Name prior to 1.5.4 */ /* Strip the second byte of information from a 16-bit depth file. */ -PNG_EXPORT(48, void, png_set_strip_16, (png_structrp png_ptr)); +PNG_EXPORT(48, void, png_set_strip_16, + (png_structrp png_ptr)); #endif #ifdef PNG_READ_QUANTIZE_SUPPORTED /* Turn on quantizing, and reduce the palette to the number of colors * available. */ -PNG_EXPORT(49, void, png_set_quantize, (png_structrp png_ptr, +PNG_EXPORT(49, void, png_set_quantize, + (png_structrp png_ptr, png_colorp palette, int num_palette, int maximum_colors, png_const_uint_16p histogram, int full_quantize)); #endif @@ -1360,82 +1402,92 @@ PNG_EXPORT(49, void, png_set_quantize, (png_structrp png_ptr, * API (floating point or fixed.) Notice, however, that the 'file_gamma' value * is the inverse of a 'screen gamma' value. */ -PNG_FP_EXPORT(50, void, png_set_gamma, (png_structrp png_ptr, +PNG_FP_EXPORT(50, void, png_set_gamma, + (png_structrp png_ptr, double screen_gamma, double override_file_gamma)) -PNG_FIXED_EXPORT(208, void, png_set_gamma_fixed, (png_structrp png_ptr, +PNG_FIXED_EXPORT(208, void, png_set_gamma_fixed, + (png_structrp png_ptr, png_fixed_point screen_gamma, png_fixed_point override_file_gamma)) #endif #ifdef PNG_WRITE_FLUSH_SUPPORTED /* Set how many lines between output flushes - 0 for no flushing */ -PNG_EXPORT(51, void, png_set_flush, (png_structrp png_ptr, int nrows)); +PNG_EXPORT(51, void, png_set_flush, + (png_structrp png_ptr, int nrows)); /* Flush the current PNG output buffer */ -PNG_EXPORT(52, void, png_write_flush, (png_structrp png_ptr)); +PNG_EXPORT(52, void, png_write_flush, + (png_structrp png_ptr)); #endif /* Optional update palette with requested transformations */ -PNG_EXPORT(53, void, png_start_read_image, (png_structrp png_ptr)); +PNG_EXPORT(53, void, png_start_read_image, + (png_structrp png_ptr)); /* Optional call to update the users info structure */ -PNG_EXPORT(54, void, png_read_update_info, (png_structrp png_ptr, - png_inforp info_ptr)); +PNG_EXPORT(54, void, png_read_update_info, + (png_structrp png_ptr, png_inforp info_ptr)); #ifdef PNG_SEQUENTIAL_READ_SUPPORTED /* Read one or more rows of image data. */ -PNG_EXPORT(55, void, png_read_rows, (png_structrp png_ptr, png_bytepp row, +PNG_EXPORT(55, void, png_read_rows, + (png_structrp png_ptr, png_bytepp row, png_bytepp display_row, png_uint_32 num_rows)); #endif #ifdef PNG_SEQUENTIAL_READ_SUPPORTED /* Read a row of data. */ -PNG_EXPORT(56, void, png_read_row, (png_structrp png_ptr, png_bytep row, - png_bytep display_row)); +PNG_EXPORT(56, void, png_read_row, + (png_structrp png_ptr, png_bytep row, png_bytep display_row)); #endif #ifdef PNG_SEQUENTIAL_READ_SUPPORTED /* Read the whole image into memory at once. */ -PNG_EXPORT(57, void, png_read_image, (png_structrp png_ptr, png_bytepp image)); +PNG_EXPORT(57, void, png_read_image, + (png_structrp png_ptr, png_bytepp image)); #endif /* Write a row of image data */ -PNG_EXPORT(58, void, png_write_row, (png_structrp png_ptr, - png_const_bytep row)); +PNG_EXPORT(58, void, png_write_row, + (png_structrp png_ptr, png_const_bytep row)); /* Write a few rows of image data: (*row) is not written; however, the type * is declared as writeable to maintain compatibility with previous versions * of libpng and to allow the 'display_row' array from read_rows to be passed * unchanged to write_rows. */ -PNG_EXPORT(59, void, png_write_rows, (png_structrp png_ptr, png_bytepp row, - png_uint_32 num_rows)); +PNG_EXPORT(59, void, png_write_rows, + (png_structrp png_ptr, png_bytepp row, png_uint_32 num_rows)); /* Write the image data */ -PNG_EXPORT(60, void, png_write_image, (png_structrp png_ptr, png_bytepp image)); +PNG_EXPORT(60, void, png_write_image, + (png_structrp png_ptr, png_bytepp image)); /* Write the end of the PNG file. */ -PNG_EXPORT(61, void, png_write_end, (png_structrp png_ptr, - png_inforp info_ptr)); +PNG_EXPORT(61, void, png_write_end, + (png_structrp png_ptr, png_inforp info_ptr)); #ifdef PNG_SEQUENTIAL_READ_SUPPORTED /* Read the end of the PNG file. */ -PNG_EXPORT(62, void, png_read_end, (png_structrp png_ptr, png_inforp info_ptr)); +PNG_EXPORT(62, void, png_read_end, + (png_structrp png_ptr, png_inforp info_ptr)); #endif /* Free any memory associated with the png_info_struct */ -PNG_EXPORT(63, void, png_destroy_info_struct, (png_const_structrp png_ptr, - png_infopp info_ptr_ptr)); +PNG_EXPORT(63, void, png_destroy_info_struct, + (png_const_structrp png_ptr, png_infopp info_ptr_ptr)); /* Free any memory associated with the png_struct and the png_info_structs */ -PNG_EXPORT(64, void, png_destroy_read_struct, (png_structpp png_ptr_ptr, +PNG_EXPORT(64, void, png_destroy_read_struct, + (png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr)); /* Free any memory associated with the png_struct and the png_info_structs */ -PNG_EXPORT(65, void, png_destroy_write_struct, (png_structpp png_ptr_ptr, - png_infopp info_ptr_ptr)); +PNG_EXPORT(65, void, png_destroy_write_struct, + (png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)); /* Set the libpng method of handling chunk CRC errors */ -PNG_EXPORT(66, void, png_set_crc_action, (png_structrp png_ptr, int crit_action, - int ancil_action)); +PNG_EXPORT(66, void, png_set_crc_action, + (png_structrp png_ptr, int crit_action, int ancil_action)); /* Values for png_set_crc_action() say how to handle CRC errors in * ancillary and critical chunks, and whether to use the data contained @@ -1465,8 +1517,8 @@ PNG_EXPORT(66, void, png_set_crc_action, (png_structrp png_ptr, int crit_action, /* Set the filtering method(s) used by libpng. Currently, the only valid * value for "method" is 0. */ -PNG_EXPORT(67, void, png_set_filter, (png_structrp png_ptr, int method, - int filters)); +PNG_EXPORT(67, void, png_set_filter, + (png_structrp png_ptr, int method, int filters)); #endif /* WRITE */ /* Flags for png_set_filter() to say which filters to use. The flags @@ -1495,11 +1547,14 @@ PNG_EXPORT(67, void, png_set_filter, (png_structrp png_ptr, int method, #ifdef PNG_WRITE_SUPPORTED #ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* DEPRECATED */ -PNG_FP_EXPORT(68, void, png_set_filter_heuristics, (png_structrp png_ptr, - int heuristic_method, int num_weights, png_const_doublep filter_weights, +PNG_FP_EXPORT(68, void, png_set_filter_heuristics, + (png_structrp png_ptr, + int heuristic_method, int num_weights, + png_const_doublep filter_weights, png_const_doublep filter_costs)) PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed, - (png_structrp png_ptr, int heuristic_method, int num_weights, + (png_structrp png_ptr, + int heuristic_method, int num_weights, png_const_fixed_point_p filter_weights, png_const_fixed_point_p filter_costs)) #endif /* WRITE_WEIGHTED_FILTER */ @@ -1518,44 +1573,44 @@ PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed, * these values may not correspond directly to the zlib compression levels. */ #ifdef PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED -PNG_EXPORT(69, void, png_set_compression_level, (png_structrp png_ptr, - int level)); +PNG_EXPORT(69, void, png_set_compression_level, + (png_structrp png_ptr, int level)); -PNG_EXPORT(70, void, png_set_compression_mem_level, (png_structrp png_ptr, - int mem_level)); +PNG_EXPORT(70, void, png_set_compression_mem_level, + (png_structrp png_ptr, int mem_level)); -PNG_EXPORT(71, void, png_set_compression_strategy, (png_structrp png_ptr, - int strategy)); +PNG_EXPORT(71, void, png_set_compression_strategy, + (png_structrp png_ptr, int strategy)); /* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a * smaller value of window_bits if it can do so safely. */ -PNG_EXPORT(72, void, png_set_compression_window_bits, (png_structrp png_ptr, - int window_bits)); +PNG_EXPORT(72, void, png_set_compression_window_bits, + (png_structrp png_ptr, int window_bits)); -PNG_EXPORT(73, void, png_set_compression_method, (png_structrp png_ptr, - int method)); +PNG_EXPORT(73, void, png_set_compression_method, + (png_structrp png_ptr, int method)); #endif /* WRITE_CUSTOMIZE_COMPRESSION */ #ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED /* Also set zlib parameters for compressing non-IDAT chunks */ -PNG_EXPORT(222, void, png_set_text_compression_level, (png_structrp png_ptr, - int level)); +PNG_EXPORT(222, void, png_set_text_compression_level, + (png_structrp png_ptr, int level)); -PNG_EXPORT(223, void, png_set_text_compression_mem_level, (png_structrp png_ptr, - int mem_level)); +PNG_EXPORT(223, void, png_set_text_compression_mem_level, + (png_structrp png_ptr, int mem_level)); -PNG_EXPORT(224, void, png_set_text_compression_strategy, (png_structrp png_ptr, - int strategy)); +PNG_EXPORT(224, void, png_set_text_compression_strategy, + (png_structrp png_ptr, int strategy)); /* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a * smaller value of window_bits if it can do so safely. */ PNG_EXPORT(225, void, png_set_text_compression_window_bits, - (png_structrp png_ptr, int window_bits)); + (png_structrp png_ptr, int window_bits)); -PNG_EXPORT(226, void, png_set_text_compression_method, (png_structrp png_ptr, - int method)); +PNG_EXPORT(226, void, png_set_text_compression_method, + (png_structrp png_ptr, int method)); #endif /* WRITE_CUSTOMIZE_ZTXT_COMPRESSION */ #endif /* WRITE */ @@ -1570,7 +1625,8 @@ PNG_EXPORT(226, void, png_set_text_compression_method, (png_structrp png_ptr, #ifdef PNG_STDIO_SUPPORTED /* Initialize the input/output for the PNG file to the default functions. */ -PNG_EXPORT(74, void, png_init_io, (png_structrp png_ptr, FILE *fp)); +PNG_EXPORT(74, void, png_init_io, + (png_structrp png_ptr, FILE *fp)); #endif /* Replace the (error and abort), and warning functions with user @@ -1581,11 +1637,13 @@ PNG_EXPORT(74, void, png_init_io, (png_structrp png_ptr, FILE *fp)); * default function will be used. */ -PNG_EXPORT(75, void, png_set_error_fn, (png_structrp png_ptr, +PNG_EXPORT(75, void, png_set_error_fn, + (png_structrp png_ptr, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn)); /* Return the user pointer associated with the error functions */ -PNG_EXPORT(76, png_voidp, png_get_error_ptr, (png_const_structrp png_ptr)); +PNG_EXPORT(76, png_voidp, png_get_error_ptr, + (png_const_structrp png_ptr)); /* Replace the default data output functions with a user supplied one(s). * If buffered output is not used, then output_flush_fn can be set to NULL. @@ -1597,47 +1655,54 @@ PNG_EXPORT(76, png_voidp, png_get_error_ptr, (png_const_structrp png_ptr)); * default flush function, which uses the standard *FILE structure, will * be used. */ -PNG_EXPORT(77, void, png_set_write_fn, (png_structrp png_ptr, png_voidp io_ptr, +PNG_EXPORT(77, void, png_set_write_fn, + (png_structrp png_ptr, + png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)); /* Replace the default data input function with a user supplied one. */ -PNG_EXPORT(78, void, png_set_read_fn, (png_structrp png_ptr, png_voidp io_ptr, - png_rw_ptr read_data_fn)); +PNG_EXPORT(78, void, png_set_read_fn, + (png_structrp png_ptr, + png_voidp io_ptr, png_rw_ptr read_data_fn)); /* Return the user pointer associated with the I/O functions */ -PNG_EXPORT(79, png_voidp, png_get_io_ptr, (png_const_structrp png_ptr)); +PNG_EXPORT(79, png_voidp, png_get_io_ptr, + (png_const_structrp png_ptr)); -PNG_EXPORT(80, void, png_set_read_status_fn, (png_structrp png_ptr, - png_read_status_ptr read_row_fn)); +PNG_EXPORT(80, void, png_set_read_status_fn, + (png_structrp png_ptr, png_read_status_ptr read_row_fn)); -PNG_EXPORT(81, void, png_set_write_status_fn, (png_structrp png_ptr, - png_write_status_ptr write_row_fn)); +PNG_EXPORT(81, void, png_set_write_status_fn, + (png_structrp png_ptr, png_write_status_ptr write_row_fn)); #ifdef PNG_USER_MEM_SUPPORTED /* Replace the default memory allocation functions with user supplied one(s). */ -PNG_EXPORT(82, void, png_set_mem_fn, (png_structrp png_ptr, png_voidp mem_ptr, - png_malloc_ptr malloc_fn, png_free_ptr free_fn)); +PNG_EXPORT(82, void, png_set_mem_fn, + (png_structrp png_ptr, + png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn)); /* Return the user pointer associated with the memory functions */ -PNG_EXPORT(83, png_voidp, png_get_mem_ptr, (png_const_structrp png_ptr)); +PNG_EXPORT(83, png_voidp, png_get_mem_ptr, + (png_const_structrp png_ptr)); #endif #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED -PNG_EXPORT(84, void, png_set_read_user_transform_fn, (png_structrp png_ptr, - png_user_transform_ptr read_user_transform_fn)); +PNG_EXPORT(84, void, png_set_read_user_transform_fn, + (png_structrp png_ptr, png_user_transform_ptr read_user_transform_fn)); #endif #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED -PNG_EXPORT(85, void, png_set_write_user_transform_fn, (png_structrp png_ptr, - png_user_transform_ptr write_user_transform_fn)); +PNG_EXPORT(85, void, png_set_write_user_transform_fn, + (png_structrp png_ptr, png_user_transform_ptr write_user_transform_fn)); #endif #ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED -PNG_EXPORT(86, void, png_set_user_transform_info, (png_structrp png_ptr, - png_voidp user_transform_ptr, int user_transform_depth, - int user_transform_channels)); +PNG_EXPORT(86, void, png_set_user_transform_info, + (png_structrp png_ptr, + png_voidp user_transform_ptr, + int user_transform_depth, int user_transform_channels)); /* Return the user pointer associated with the user transform functions */ PNG_EXPORT(87, png_voidp, png_get_user_transform_ptr, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); #endif #ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED @@ -1652,8 +1717,10 @@ PNG_EXPORT(87, png_voidp, png_get_user_transform_ptr, * find the output pixel (x,y) given an interlaced sub-image pixel * (row,col,pass). (See below for these macros.) */ -PNG_EXPORT(217, png_uint_32, png_get_current_row_number, (png_const_structrp)); -PNG_EXPORT(218, png_byte, png_get_current_pass_number, (png_const_structrp)); +PNG_EXPORT(217, png_uint_32, png_get_current_row_number, + (png_const_structrp)); +PNG_EXPORT(218, png_byte, png_get_current_pass_number, + (png_const_structrp)); #endif #ifdef PNG_READ_USER_CHUNKS_SUPPORTED @@ -1676,28 +1743,32 @@ PNG_EXPORT(218, png_byte, png_get_current_pass_number, (png_const_structrp)); * See "INTERACTION WITH USER CHUNK CALLBACKS" below for important notes about * how this behavior will change in libpng 1.7 */ -PNG_EXPORT(88, void, png_set_read_user_chunk_fn, (png_structrp png_ptr, +PNG_EXPORT(88, void, png_set_read_user_chunk_fn, + (png_structrp png_ptr, png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn)); #endif #ifdef PNG_USER_CHUNKS_SUPPORTED -PNG_EXPORT(89, png_voidp, png_get_user_chunk_ptr, (png_const_structrp png_ptr)); +PNG_EXPORT(89, png_voidp, png_get_user_chunk_ptr, + (png_const_structrp png_ptr)); #endif #ifdef PNG_PROGRESSIVE_READ_SUPPORTED /* Sets the function callbacks for the push reader, and a pointer to a * user-defined structure available to the callback functions. */ -PNG_EXPORT(90, void, png_set_progressive_read_fn, (png_structrp png_ptr, +PNG_EXPORT(90, void, png_set_progressive_read_fn, + (png_structrp png_ptr, png_voidp progressive_ptr, png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn, png_progressive_end_ptr end_fn)); /* Returns the user pointer associated with the push read functions */ PNG_EXPORT(91, png_voidp, png_get_progressive_ptr, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); /* Function to be called when data becomes available */ -PNG_EXPORT(92, void, png_process_data, (png_structrp png_ptr, +PNG_EXPORT(92, void, png_process_data, + (png_structrp png_ptr, png_inforp info_ptr, png_bytep buffer, size_t buffer_size)); /* A function which may be called *only* within png_process_data to stop the @@ -1707,7 +1778,8 @@ PNG_EXPORT(92, void, png_process_data, (png_structrp png_ptr, * 'save' is set to true the routine will first save all the pending data and * will always return 0. */ -PNG_EXPORT(219, size_t, png_process_data_pause, (png_structrp, int save)); +PNG_EXPORT(219, size_t, png_process_data_pause, + (png_structrp, int save)); /* A function which may be called *only* outside (after) a call to * png_process_data. It returns the number of bytes of data to skip in the @@ -1715,45 +1787,53 @@ PNG_EXPORT(219, size_t, png_process_data_pause, (png_structrp, int save)); * application must skip than number of bytes of input data and pass the * following data to the next call to png_process_data. */ -PNG_EXPORT(220, png_uint_32, png_process_data_skip, (png_structrp)); +PNG_EXPORT(220, png_uint_32, png_process_data_skip, + (png_structrp)); /* Function that combines rows. 'new_row' is a flag that should come from * the callback and be non-NULL if anything needs to be done; the library * stores its own version of the new data internally and ignores the passed * in value. */ -PNG_EXPORT(93, void, png_progressive_combine_row, (png_const_structrp png_ptr, +PNG_EXPORT(93, void, png_progressive_combine_row, + (png_const_structrp png_ptr, png_bytep old_row, png_const_bytep new_row)); #endif /* PROGRESSIVE_READ */ -PNG_EXPORTA(94, png_voidp, png_malloc, (png_const_structrp png_ptr, - png_alloc_size_t size), PNG_ALLOCATED); +PNG_EXPORTA(94, png_voidp, png_malloc, + (png_const_structrp png_ptr, png_alloc_size_t size), + PNG_ALLOCATED); /* Added at libpng version 1.4.0 */ -PNG_EXPORTA(95, png_voidp, png_calloc, (png_const_structrp png_ptr, - png_alloc_size_t size), PNG_ALLOCATED); +PNG_EXPORTA(95, png_voidp, png_calloc, + (png_const_structrp png_ptr, png_alloc_size_t size), + PNG_ALLOCATED); /* Added at libpng version 1.2.4 */ -PNG_EXPORTA(96, png_voidp, png_malloc_warn, (png_const_structrp png_ptr, - png_alloc_size_t size), PNG_ALLOCATED); +PNG_EXPORTA(96, png_voidp, png_malloc_warn, + (png_const_structrp png_ptr, png_alloc_size_t size), + PNG_ALLOCATED); /* Frees a pointer allocated by png_malloc() */ -PNG_EXPORT(97, void, png_free, (png_const_structrp png_ptr, png_voidp ptr)); +PNG_EXPORT(97, void, png_free, + (png_const_structrp png_ptr, png_voidp ptr)); /* Free data that was allocated internally */ -PNG_EXPORT(98, void, png_free_data, (png_const_structrp png_ptr, - png_inforp info_ptr, png_uint_32 free_me, int num)); +PNG_EXPORT(98, void, png_free_data, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_uint_32 free_me, int num)); /* Reassign the responsibility for freeing existing data, whether allocated * by libpng or by the application; this works on the png_info structure passed * in, without changing the state for other png_info structures. */ -PNG_EXPORT(99, void, png_data_freer, (png_const_structrp png_ptr, - png_inforp info_ptr, int freer, png_uint_32 mask)); +PNG_EXPORT(99, void, png_data_freer, + (png_const_structrp png_ptr, png_inforp info_ptr, + int freer, png_uint_32 mask)); /* Assignments for png_data_freer */ #define PNG_DESTROY_WILL_FREE_DATA 1 -#define PNG_SET_WILL_FREE_DATA 1 -#define PNG_USER_WILL_FREE_DATA 2 +#define PNG_SET_WILL_FREE_DATA 1 +#define PNG_USER_WILL_FREE_DATA 2 /* Flags for png_ptr->free_me and info_ptr->free_me */ #define PNG_FREE_HIST 0x0008U #define PNG_FREE_ICCP 0x0010U @@ -1773,36 +1853,42 @@ PNG_EXPORT(99, void, png_data_freer, (png_const_structrp png_ptr, #define PNG_FREE_MUL 0x4220U /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */ #ifdef PNG_USER_MEM_SUPPORTED -PNG_EXPORTA(100, png_voidp, png_malloc_default, (png_const_structrp png_ptr, - png_alloc_size_t size), PNG_ALLOCATED PNG_DEPRECATED); -PNG_EXPORTA(101, void, png_free_default, (png_const_structrp png_ptr, - png_voidp ptr), PNG_DEPRECATED); +PNG_EXPORTA(100, png_voidp, png_malloc_default, + (png_const_structrp png_ptr, png_alloc_size_t size), + PNG_ALLOCATED PNG_DEPRECATED); +PNG_EXPORTA(101, void, png_free_default, + (png_const_structrp png_ptr, png_voidp ptr), + PNG_DEPRECATED); #endif #ifdef PNG_ERROR_TEXT_SUPPORTED /* Fatal error in PNG image of libpng - can't continue */ -PNG_EXPORTA(102, void, png_error, (png_const_structrp png_ptr, - png_const_charp error_message), PNG_NORETURN); +PNG_EXPORTA(102, void, png_error, + (png_const_structrp png_ptr, png_const_charp error_message), + PNG_NORETURN); /* The same, but the chunk name is prepended to the error string. */ -PNG_EXPORTA(103, void, png_chunk_error, (png_const_structrp png_ptr, - png_const_charp error_message), PNG_NORETURN); +PNG_EXPORTA(103, void, png_chunk_error, + (png_const_structrp png_ptr, png_const_charp error_message), + PNG_NORETURN); #else /* Fatal error in PNG image of libpng - can't continue */ -PNG_EXPORTA(104, void, png_err, (png_const_structrp png_ptr), PNG_NORETURN); +PNG_EXPORTA(104, void, png_err, + (png_const_structrp png_ptr), + PNG_NORETURN); # define png_error(s1,s2) png_err(s1) # define png_chunk_error(s1,s2) png_err(s1) #endif #ifdef PNG_WARNINGS_SUPPORTED /* Non-fatal error in libpng. Can continue, but may have a problem. */ -PNG_EXPORT(105, void, png_warning, (png_const_structrp png_ptr, - png_const_charp warning_message)); +PNG_EXPORT(105, void, png_warning, + (png_const_structrp png_ptr, png_const_charp warning_message)); /* Non-fatal error in libpng, chunk name is prepended to message. */ -PNG_EXPORT(106, void, png_chunk_warning, (png_const_structrp png_ptr, - png_const_charp warning_message)); +PNG_EXPORT(106, void, png_chunk_warning, + (png_const_structrp png_ptr, png_const_charp warning_message)); #else # define png_warning(s1,s2) ((void)(s1)) # define png_chunk_warning(s1,s2) ((void)(s1)) @@ -1811,17 +1897,17 @@ PNG_EXPORT(106, void, png_chunk_warning, (png_const_structrp png_ptr, #ifdef PNG_BENIGN_ERRORS_SUPPORTED /* Benign error in libpng. Can continue, but may have a problem. * User can choose whether to handle as a fatal error or as a warning. */ -PNG_EXPORT(107, void, png_benign_error, (png_const_structrp png_ptr, - png_const_charp warning_message)); +PNG_EXPORT(107, void, png_benign_error, + (png_const_structrp png_ptr, png_const_charp warning_message)); #ifdef PNG_READ_SUPPORTED /* Same, chunk name is prepended to message (only during read) */ -PNG_EXPORT(108, void, png_chunk_benign_error, (png_const_structrp png_ptr, - png_const_charp warning_message)); +PNG_EXPORT(108, void, png_chunk_benign_error, + (png_const_structrp png_ptr, png_const_charp warning_message)); #endif PNG_EXPORT(109, void, png_set_benign_errors, - (png_structrp png_ptr, int allowed)); + (png_structrp png_ptr, int allowed)); #else # ifdef PNG_ALLOW_BENIGN_ERRORS # define png_benign_error png_warning @@ -1845,169 +1931,181 @@ PNG_EXPORT(109, void, png_set_benign_errors, * png_info_struct. */ /* Returns "flag" if chunk data is valid in info_ptr. */ -PNG_EXPORT(110, png_uint_32, png_get_valid, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 flag)); +PNG_EXPORT(110, png_uint_32, png_get_valid, + (png_const_structrp png_ptr, png_const_inforp info_ptr, png_uint_32 flag)); /* Returns number of bytes needed to hold a transformed row. */ -PNG_EXPORT(111, size_t, png_get_rowbytes, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(111, size_t, png_get_rowbytes, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); #ifdef PNG_INFO_IMAGE_SUPPORTED /* Returns row_pointers, which is an array of pointers to scanlines that was * returned from png_read_png(). */ -PNG_EXPORT(112, png_bytepp, png_get_rows, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(112, png_bytepp, png_get_rows, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); /* Set row_pointers, which is an array of pointers to scanlines for use * by png_write_png(). */ -PNG_EXPORT(113, void, png_set_rows, (png_const_structrp png_ptr, - png_inforp info_ptr, png_bytepp row_pointers)); +PNG_EXPORT(113, void, png_set_rows, + (png_const_structrp png_ptr, png_inforp info_ptr, png_bytepp row_pointers)); #endif /* Returns number of color channels in image. */ -PNG_EXPORT(114, png_byte, png_get_channels, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(114, png_byte, png_get_channels, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); #ifdef PNG_EASY_ACCESS_SUPPORTED /* Returns image width in pixels. */ -PNG_EXPORT(115, png_uint_32, png_get_image_width, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(115, png_uint_32, png_get_image_width, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); /* Returns image height in pixels. */ -PNG_EXPORT(116, png_uint_32, png_get_image_height, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(116, png_uint_32, png_get_image_height, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); /* Returns image bit_depth. */ -PNG_EXPORT(117, png_byte, png_get_bit_depth, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(117, png_byte, png_get_bit_depth, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); /* Returns image color_type. */ -PNG_EXPORT(118, png_byte, png_get_color_type, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(118, png_byte, png_get_color_type, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); /* Returns image filter_type. */ -PNG_EXPORT(119, png_byte, png_get_filter_type, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(119, png_byte, png_get_filter_type, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); /* Returns image interlace_type. */ -PNG_EXPORT(120, png_byte, png_get_interlace_type, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(120, png_byte, png_get_interlace_type, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); /* Returns image compression_type. */ -PNG_EXPORT(121, png_byte, png_get_compression_type, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(121, png_byte, png_get_compression_type, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); /* Returns image resolution in pixels per meter, from pHYs chunk data. */ PNG_EXPORT(122, png_uint_32, png_get_pixels_per_meter, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); PNG_EXPORT(123, png_uint_32, png_get_x_pixels_per_meter, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); PNG_EXPORT(124, png_uint_32, png_get_y_pixels_per_meter, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); /* Returns pixel aspect ratio, computed from pHYs chunk data. */ PNG_FP_EXPORT(125, float, png_get_pixel_aspect_ratio, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) + (png_const_structrp png_ptr, png_const_inforp info_ptr)) PNG_FIXED_EXPORT(210, png_fixed_point, png_get_pixel_aspect_ratio_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) + (png_const_structrp png_ptr, png_const_inforp info_ptr)) /* Returns image x, y offset in pixels or microns, from oFFs chunk data. */ PNG_EXPORT(126, png_int_32, png_get_x_offset_pixels, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); PNG_EXPORT(127, png_int_32, png_get_y_offset_pixels, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); PNG_EXPORT(128, png_int_32, png_get_x_offset_microns, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); PNG_EXPORT(129, png_int_32, png_get_y_offset_microns, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); #endif /* EASY_ACCESS */ #ifdef PNG_READ_SUPPORTED /* Returns pointer to signature string read from PNG header */ -PNG_EXPORT(130, png_const_bytep, png_get_signature, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); +PNG_EXPORT(130, png_const_bytep, png_get_signature, + (png_const_structrp png_ptr, png_const_inforp info_ptr)); #endif #ifdef PNG_bKGD_SUPPORTED -PNG_EXPORT(131, png_uint_32, png_get_bKGD, (png_const_structrp png_ptr, - png_inforp info_ptr, png_color_16p *background)); +PNG_EXPORT(131, png_uint_32, png_get_bKGD, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_color_16p *background)); #endif #ifdef PNG_bKGD_SUPPORTED -PNG_EXPORT(132, void, png_set_bKGD, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_color_16p background)); +PNG_EXPORT(132, void, png_set_bKGD, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_const_color_16p background)); #endif #ifdef PNG_cHRM_SUPPORTED -PNG_FP_EXPORT(133, png_uint_32, png_get_cHRM, (png_const_structrp png_ptr, - png_const_inforp info_ptr, double *white_x, double *white_y, double *red_x, - double *red_y, double *green_x, double *green_y, double *blue_x, - double *blue_y)) -PNG_FP_EXPORT(230, png_uint_32, png_get_cHRM_XYZ, (png_const_structrp png_ptr, - png_const_inforp info_ptr, double *red_X, double *red_Y, double *red_Z, - double *green_X, double *green_Y, double *green_Z, double *blue_X, - double *blue_Y, double *blue_Z)) +PNG_FP_EXPORT(133, png_uint_32, png_get_cHRM, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + double *white_x, double *white_y, + double *red_x, double *red_y, + double *green_x, double *green_y, + double *blue_x, double *blue_y)) +PNG_FP_EXPORT(230, png_uint_32, png_get_cHRM_XYZ, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + double *red_X, double *red_Y, double *red_Z, + double *green_X, double *green_Y, double *green_Z, + double *blue_X, double *blue_Y, double *blue_Z)) PNG_FIXED_EXPORT(134, png_uint_32, png_get_cHRM_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, + (png_const_structrp png_ptr, png_const_inforp info_ptr, png_fixed_point *int_white_x, png_fixed_point *int_white_y, png_fixed_point *int_red_x, png_fixed_point *int_red_y, png_fixed_point *int_green_x, png_fixed_point *int_green_y, png_fixed_point *int_blue_x, png_fixed_point *int_blue_y)) PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, + (png_const_structrp png_ptr, png_const_inforp info_ptr, png_fixed_point *int_red_X, png_fixed_point *int_red_Y, - png_fixed_point *int_red_Z, png_fixed_point *int_green_X, - png_fixed_point *int_green_Y, png_fixed_point *int_green_Z, + png_fixed_point *int_red_Z, + png_fixed_point *int_green_X, png_fixed_point *int_green_Y, + png_fixed_point *int_green_Z, png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y, png_fixed_point *int_blue_Z)) #endif #ifdef PNG_cHRM_SUPPORTED -PNG_FP_EXPORT(135, void, png_set_cHRM, (png_const_structrp png_ptr, - png_inforp info_ptr, - double white_x, double white_y, double red_x, double red_y, double green_x, - double green_y, double blue_x, double blue_y)) -PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, (png_const_structrp png_ptr, - png_inforp info_ptr, double red_X, double red_Y, double red_Z, - double green_X, double green_Y, double green_Z, double blue_X, - double blue_Y, double blue_Z)) -PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, png_fixed_point int_white_x, - png_fixed_point int_white_y, png_fixed_point int_red_x, - png_fixed_point int_red_y, png_fixed_point int_green_x, - png_fixed_point int_green_y, png_fixed_point int_blue_x, - png_fixed_point int_blue_y)) -PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y, - png_fixed_point int_red_Z, png_fixed_point int_green_X, - png_fixed_point int_green_Y, png_fixed_point int_green_Z, +PNG_FP_EXPORT(135, void, png_set_cHRM, + (png_const_structrp png_ptr, png_inforp info_ptr, + double white_x, double white_y, + double red_x, double red_y, + double green_x, double green_y, + double blue_x, double blue_y)) +PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, + (png_const_structrp png_ptr, png_inforp info_ptr, + double red_X, double red_Y, double red_Z, + double green_X, double green_Y, double green_Z, + double blue_X, double blue_Y, double blue_Z)) +PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_fixed_point int_white_x, png_fixed_point int_white_y, + png_fixed_point int_red_x, png_fixed_point int_red_y, + png_fixed_point int_green_x, png_fixed_point int_green_y, + png_fixed_point int_blue_x, png_fixed_point int_blue_y)) +PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_fixed_point int_red_X, png_fixed_point int_red_Y, + png_fixed_point int_red_Z, + png_fixed_point int_green_X, png_fixed_point int_green_Y, + png_fixed_point int_green_Z, png_fixed_point int_blue_X, png_fixed_point int_blue_Y, png_fixed_point int_blue_Z)) #endif #ifdef PNG_cICP_SUPPORTED -PNG_EXPORT(250, png_uint_32, png_get_cICP, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_bytep colour_primaries, - png_bytep transfer_function, png_bytep matrix_coefficients, - png_bytep video_full_range_flag)); +PNG_EXPORT(250, png_uint_32, png_get_cICP, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + png_bytep colour_primaries, png_bytep transfer_function, + png_bytep matrix_coefficients, png_bytep video_full_range_flag)); #endif #ifdef PNG_cICP_SUPPORTED -PNG_EXPORT(251, void, png_set_cICP, (png_const_structrp png_ptr, - png_inforp info_ptr, png_byte colour_primaries, - png_byte transfer_function, png_byte matrix_coefficients, - png_byte video_full_range_flag)); +PNG_EXPORT(251, void, png_set_cICP, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_byte colour_primaries, png_byte transfer_function, + png_byte matrix_coefficients, png_byte video_full_range_flag)); #endif #ifdef PNG_cLLI_SUPPORTED -PNG_FP_EXPORT(252, png_uint_32, png_get_cLLI, (png_const_structrp png_ptr, - png_const_inforp info_ptr, double *maximum_content_light_level, - double *maximum_frame_average_light_level)) +PNG_FP_EXPORT(252, png_uint_32, png_get_cLLI, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + double *maximum_content_light_level, + double *maximum_frame_average_light_level)) PNG_FIXED_EXPORT(253, png_uint_32, png_get_cLLI_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, + (png_const_structrp png_ptr, png_const_inforp info_ptr, /* The values below are in cd/m2 (nits) and are scaled by 10,000; not * 100,000 as in the case of png_fixed_point. */ @@ -2016,11 +2114,12 @@ PNG_FIXED_EXPORT(253, png_uint_32, png_get_cLLI_fixed, #endif #ifdef PNG_cLLI_SUPPORTED -PNG_FP_EXPORT(254, void, png_set_cLLI, (png_const_structrp png_ptr, - png_inforp info_ptr, double maximum_content_light_level, - double maximum_frame_average_light_level)) -PNG_FIXED_EXPORT(255, void, png_set_cLLI_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, +PNG_FP_EXPORT(254, void, png_set_cLLI, + (png_const_structrp png_ptr, png_inforp info_ptr, + double maximum_content_light_level, + double maximum_frame_average_light_level)) +PNG_FIXED_EXPORT(255, void, png_set_cLLI_fixed, + (png_const_structrp png_ptr, png_inforp info_ptr, /* The values below are in cd/m2 (nits) and are scaled by 10,000; not * 100,000 as in the case of png_fixed_point. */ @@ -2029,64 +2128,73 @@ PNG_FIXED_EXPORT(255, void, png_set_cLLI_fixed, (png_const_structrp png_ptr, #endif #ifdef PNG_eXIf_SUPPORTED -PNG_EXPORT(246, png_uint_32, png_get_eXIf, (png_const_structrp png_ptr, - png_inforp info_ptr, png_bytep *exif)); -PNG_EXPORT(247, void, png_set_eXIf, (png_const_structrp png_ptr, - png_inforp info_ptr, png_bytep exif)); +PNG_EXPORT(246, png_uint_32, png_get_eXIf, + (png_const_structrp png_ptr, png_inforp info_ptr, png_bytep *exif)); +PNG_EXPORT(247, void, png_set_eXIf, + (png_const_structrp png_ptr, png_inforp info_ptr, png_bytep exif)); -PNG_EXPORT(248, png_uint_32, png_get_eXIf_1, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 *num_exif, png_bytep *exif)); -PNG_EXPORT(249, void, png_set_eXIf_1, (png_const_structrp png_ptr, - png_inforp info_ptr, png_uint_32 num_exif, png_bytep exif)); +PNG_EXPORT(248, png_uint_32, png_get_eXIf_1, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + png_uint_32 *num_exif, png_bytep *exif)); +PNG_EXPORT(249, void, png_set_eXIf_1, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_uint_32 num_exif, png_bytep exif)); #endif #ifdef PNG_gAMA_SUPPORTED -PNG_FP_EXPORT(137, png_uint_32, png_get_gAMA, (png_const_structrp png_ptr, - png_const_inforp info_ptr, double *file_gamma)) +PNG_FP_EXPORT(137, png_uint_32, png_get_gAMA, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + double *file_gamma)) PNG_FIXED_EXPORT(138, png_uint_32, png_get_gAMA_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, + (png_const_structrp png_ptr, png_const_inforp info_ptr, png_fixed_point *int_file_gamma)) #endif #ifdef PNG_gAMA_SUPPORTED -PNG_FP_EXPORT(139, void, png_set_gAMA, (png_const_structrp png_ptr, - png_inforp info_ptr, double file_gamma)) -PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, png_fixed_point int_file_gamma)) +PNG_FP_EXPORT(139, void, png_set_gAMA, + (png_const_structrp png_ptr, png_inforp info_ptr, + double file_gamma)) +PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_fixed_point int_file_gamma)) #endif #ifdef PNG_hIST_SUPPORTED -PNG_EXPORT(141, png_uint_32, png_get_hIST, (png_const_structrp png_ptr, - png_inforp info_ptr, png_uint_16p *hist)); -PNG_EXPORT(142, void, png_set_hIST, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_uint_16p hist)); +PNG_EXPORT(141, png_uint_32, png_get_hIST, + (png_const_structrp png_ptr, png_inforp info_ptr, png_uint_16p *hist)); +PNG_EXPORT(142, void, png_set_hIST, + (png_const_structrp png_ptr, png_inforp info_ptr, png_const_uint_16p hist)); #endif -PNG_EXPORT(143, png_uint_32, png_get_IHDR, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 *width, png_uint_32 *height, - int *bit_depth, int *color_type, int *interlace_method, - int *compression_method, int *filter_method)); +PNG_EXPORT(143, png_uint_32, png_get_IHDR, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + png_uint_32 *width, png_uint_32 *height, + int *bit_depth, int *color_type, + int *interlace_method, int *compression_method, int *filter_method)); -PNG_EXPORT(144, void, png_set_IHDR, (png_const_structrp png_ptr, - png_inforp info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth, - int color_type, int interlace_method, int compression_method, - int filter_method)); +PNG_EXPORT(144, void, png_set_IHDR, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_uint_32 width, png_uint_32 height, + int bit_depth, int color_type, + int interlace_method, int compression_method, int filter_method)); #ifdef PNG_mDCV_SUPPORTED -PNG_FP_EXPORT(256, png_uint_32, png_get_mDCV, (png_const_structrp png_ptr, - png_const_inforp info_ptr, +PNG_FP_EXPORT(256, png_uint_32, png_get_mDCV, + (png_const_structrp png_ptr, png_const_inforp info_ptr, /* The chromaticities of the mastering display. As cHRM, but independent of * the encoding endpoints in cHRM, or cICP, or iCCP. These values will * always be in the range 0 to 1.3107. */ - double *white_x, double *white_y, double *red_x, double *red_y, - double *green_x, double *green_y, double *blue_x, double *blue_y, + double *white_x, double *white_y, + double *red_x, double *red_y, + double *green_x, double *green_y, + double *blue_x, double *blue_y, /* Mastering display luminance in cd/m2 (nits). */ double *mastering_display_maximum_luminance, double *mastering_display_minimum_luminance)) PNG_FIXED_EXPORT(257, png_uint_32, png_get_mDCV_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, + (png_const_structrp png_ptr, png_const_inforp info_ptr, png_fixed_point *int_white_x, png_fixed_point *int_white_y, png_fixed_point *int_red_x, png_fixed_point *int_red_y, png_fixed_point *int_green_x, png_fixed_point *int_green_y, @@ -2099,19 +2207,21 @@ PNG_FIXED_EXPORT(257, png_uint_32, png_get_mDCV_fixed, #endif #ifdef PNG_mDCV_SUPPORTED -PNG_FP_EXPORT(258, void, png_set_mDCV, (png_const_structrp png_ptr, - png_inforp info_ptr, +PNG_FP_EXPORT(258, void, png_set_mDCV, + (png_const_structrp png_ptr, png_inforp info_ptr, /* The chromaticities of the mastering display. As cHRM, but independent of * the encoding endpoints in cHRM, or cICP, or iCCP. */ - double white_x, double white_y, double red_x, double red_y, double green_x, - double green_y, double blue_x, double blue_y, + double white_x, double white_y, + double red_x, double red_y, + double green_x, double green_y, + double blue_x, double blue_y, /* Mastering display luminance in cd/m2 (nits). */ double mastering_display_maximum_luminance, double mastering_display_minimum_luminance)) -PNG_FIXED_EXPORT(259, void, png_set_mDCV_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, +PNG_FIXED_EXPORT(259, void, png_set_mDCV_fixed, + (png_const_structrp png_ptr, png_inforp info_ptr, /* The admissible range of these values is not the full range of a PNG * fixed point value. Negative values cannot be encoded and the maximum * value is about 1.3 */ @@ -2127,95 +2237,107 @@ PNG_FIXED_EXPORT(259, void, png_set_mDCV_fixed, (png_const_structrp png_ptr, #endif #ifdef PNG_oFFs_SUPPORTED -PNG_EXPORT(145, png_uint_32, png_get_oFFs, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_int_32 *offset_x, png_int_32 *offset_y, - int *unit_type)); +PNG_EXPORT(145, png_uint_32, png_get_oFFs, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)); #endif #ifdef PNG_oFFs_SUPPORTED -PNG_EXPORT(146, void, png_set_oFFs, (png_const_structrp png_ptr, - png_inforp info_ptr, png_int_32 offset_x, png_int_32 offset_y, - int unit_type)); +PNG_EXPORT(146, void, png_set_oFFs, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_int_32 offset_x, png_int_32 offset_y, int unit_type)); #endif #ifdef PNG_pCAL_SUPPORTED -PNG_EXPORT(147, png_uint_32, png_get_pCAL, (png_const_structrp png_ptr, - png_inforp info_ptr, png_charp *purpose, png_int_32 *X0, - png_int_32 *X1, int *type, int *nparams, png_charp *units, - png_charpp *params)); +PNG_EXPORT(147, png_uint_32, png_get_pCAL, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_charp *purpose, png_int_32 *X0, png_int_32 *X1, + int *type, int *nparams, png_charp *units, png_charpp *params)); #endif #ifdef PNG_pCAL_SUPPORTED -PNG_EXPORT(148, void, png_set_pCAL, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_charp purpose, png_int_32 X0, png_int_32 X1, +PNG_EXPORT(148, void, png_set_pCAL, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, png_const_charp units, png_charpp params)); #endif #ifdef PNG_pHYs_SUPPORTED -PNG_EXPORT(149, png_uint_32, png_get_pHYs, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, - int *unit_type)); +PNG_EXPORT(149, png_uint_32, png_get_pHYs, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)); #endif #ifdef PNG_pHYs_SUPPORTED -PNG_EXPORT(150, void, png_set_pHYs, (png_const_structrp png_ptr, - png_inforp info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type)); +PNG_EXPORT(150, void, png_set_pHYs, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_uint_32 res_x, png_uint_32 res_y, int unit_type)); #endif -PNG_EXPORT(151, png_uint_32, png_get_PLTE, (png_const_structrp png_ptr, - png_inforp info_ptr, png_colorp *palette, int *num_palette)); +PNG_EXPORT(151, png_uint_32, png_get_PLTE, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_colorp *palette, int *num_palette)); -PNG_EXPORT(152, void, png_set_PLTE, (png_structrp png_ptr, - png_inforp info_ptr, png_const_colorp palette, int num_palette)); +PNG_EXPORT(152, void, png_set_PLTE, + (png_structrp png_ptr, png_inforp info_ptr, + png_const_colorp palette, int num_palette)); #ifdef PNG_sBIT_SUPPORTED -PNG_EXPORT(153, png_uint_32, png_get_sBIT, (png_const_structrp png_ptr, - png_inforp info_ptr, png_color_8p *sig_bit)); +PNG_EXPORT(153, png_uint_32, png_get_sBIT, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_color_8p *sig_bit)); #endif #ifdef PNG_sBIT_SUPPORTED -PNG_EXPORT(154, void, png_set_sBIT, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_color_8p sig_bit)); +PNG_EXPORT(154, void, png_set_sBIT, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_const_color_8p sig_bit)); #endif #ifdef PNG_sRGB_SUPPORTED -PNG_EXPORT(155, png_uint_32, png_get_sRGB, (png_const_structrp png_ptr, - png_const_inforp info_ptr, int *file_srgb_intent)); +PNG_EXPORT(155, png_uint_32, png_get_sRGB, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + int *file_srgb_intent)); #endif #ifdef PNG_sRGB_SUPPORTED -PNG_EXPORT(156, void, png_set_sRGB, (png_const_structrp png_ptr, - png_inforp info_ptr, int srgb_intent)); -PNG_EXPORT(157, void, png_set_sRGB_gAMA_and_cHRM, (png_const_structrp png_ptr, - png_inforp info_ptr, int srgb_intent)); +PNG_EXPORT(156, void, png_set_sRGB, + (png_const_structrp png_ptr, png_inforp info_ptr, int srgb_intent)); +PNG_EXPORT(157, void, png_set_sRGB_gAMA_and_cHRM, + (png_const_structrp png_ptr, png_inforp info_ptr, int srgb_intent)); #endif #ifdef PNG_iCCP_SUPPORTED -PNG_EXPORT(158, png_uint_32, png_get_iCCP, (png_const_structrp png_ptr, - png_inforp info_ptr, png_charpp name, int *compression_type, +PNG_EXPORT(158, png_uint_32, png_get_iCCP, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_charpp name, int *compression_type, png_bytepp profile, png_uint_32 *proflen)); #endif #ifdef PNG_iCCP_SUPPORTED -PNG_EXPORT(159, void, png_set_iCCP, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_charp name, int compression_type, +PNG_EXPORT(159, void, png_set_iCCP, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_const_charp name, int compression_type, png_const_bytep profile, png_uint_32 proflen)); #endif #ifdef PNG_sPLT_SUPPORTED -PNG_EXPORT(160, int, png_get_sPLT, (png_const_structrp png_ptr, - png_inforp info_ptr, png_sPLT_tpp entries)); +PNG_EXPORT(160, int, png_get_sPLT, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_sPLT_tpp entries)); #endif #ifdef PNG_sPLT_SUPPORTED -PNG_EXPORT(161, void, png_set_sPLT, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_sPLT_tp entries, int nentries)); +PNG_EXPORT(161, void, png_set_sPLT, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_const_sPLT_tp entries, int nentries)); #endif #ifdef PNG_TEXT_SUPPORTED /* png_get_text also returns the number of text chunks in *num_text */ -PNG_EXPORT(162, int, png_get_text, (png_const_structrp png_ptr, - png_inforp info_ptr, png_textp *text_ptr, int *num_text)); +PNG_EXPORT(162, int, png_get_text, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_textp *text_ptr, int *num_text)); #endif /* Note while png_set_text() will accept a structure whose text, @@ -2226,35 +2348,41 @@ PNG_EXPORT(162, int, png_get_text, (png_const_structrp png_ptr, */ #ifdef PNG_TEXT_SUPPORTED -PNG_EXPORT(163, void, png_set_text, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_textp text_ptr, int num_text)); +PNG_EXPORT(163, void, png_set_text, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_const_textp text_ptr, int num_text)); #endif #ifdef PNG_tIME_SUPPORTED -PNG_EXPORT(164, png_uint_32, png_get_tIME, (png_const_structrp png_ptr, - png_inforp info_ptr, png_timep *mod_time)); +PNG_EXPORT(164, png_uint_32, png_get_tIME, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_timep *mod_time)); #endif #ifdef PNG_tIME_SUPPORTED -PNG_EXPORT(165, void, png_set_tIME, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_timep mod_time)); +PNG_EXPORT(165, void, png_set_tIME, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_const_timep mod_time)); #endif #ifdef PNG_tRNS_SUPPORTED -PNG_EXPORT(166, png_uint_32, png_get_tRNS, (png_const_structrp png_ptr, - png_inforp info_ptr, png_bytep *trans_alpha, int *num_trans, +PNG_EXPORT(166, png_uint_32, png_get_tRNS, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)); #endif #ifdef PNG_tRNS_SUPPORTED -PNG_EXPORT(167, void, png_set_tRNS, (png_structrp png_ptr, - png_inforp info_ptr, png_const_bytep trans_alpha, int num_trans, +PNG_EXPORT(167, void, png_set_tRNS, + (png_structrp png_ptr, png_inforp info_ptr, + png_const_bytep trans_alpha, int num_trans, png_const_color_16p trans_color)); #endif #ifdef PNG_sCAL_SUPPORTED -PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL, (png_const_structrp png_ptr, - png_const_inforp info_ptr, int *unit, double *width, double *height)) +PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + int *unit, double *width, double *height)) #if defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) || \ defined(PNG_FLOATING_POINT_SUPPORTED) /* NOTE: this API is currently implemented using floating point arithmetic, @@ -2263,21 +2391,22 @@ PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL, (png_const_structrp png_ptr, * is highly recommended that png_get_sCAL_s be used instead. */ PNG_FIXED_EXPORT(214, png_uint_32, png_get_sCAL_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, int *unit, - png_fixed_point *width, png_fixed_point *height)) + (png_const_structrp png_ptr, png_const_inforp info_ptr, + int *unit, png_fixed_point *width, png_fixed_point *height)) #endif PNG_EXPORT(169, png_uint_32, png_get_sCAL_s, - (png_const_structrp png_ptr, png_const_inforp info_ptr, int *unit, - png_charpp swidth, png_charpp sheight)); - -PNG_FP_EXPORT(170, void, png_set_sCAL, (png_const_structrp png_ptr, - png_inforp info_ptr, int unit, double width, double height)) -PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, int unit, png_fixed_point width, - png_fixed_point height)) -PNG_EXPORT(171, void, png_set_sCAL_s, (png_const_structrp png_ptr, - png_inforp info_ptr, int unit, - png_const_charp swidth, png_const_charp sheight)); + (png_const_structrp png_ptr, png_const_inforp info_ptr, + int *unit, png_charpp swidth, png_charpp sheight)); + +PNG_FP_EXPORT(170, void, png_set_sCAL, + (png_const_structrp png_ptr, png_inforp info_ptr, + int unit, double width, double height)) +PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, + (png_const_structrp png_ptr, png_inforp info_ptr, + int unit, png_fixed_point width, png_fixed_point height)) +PNG_EXPORT(171, void, png_set_sCAL_s, + (png_const_structrp png_ptr, png_inforp info_ptr, + int unit, png_const_charp swidth, png_const_charp sheight)); #endif /* sCAL */ #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED @@ -2380,7 +2509,8 @@ PNG_EXPORT(171, void, png_set_sCAL_s, (png_const_structrp png_ptr, * be processed by libpng. */ #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED -PNG_EXPORT(172, void, png_set_keep_unknown_chunks, (png_structrp png_ptr, +PNG_EXPORT(172, void, png_set_keep_unknown_chunks, + (png_structrp png_ptr, int keep, png_const_bytep chunk_list, int num_chunks)); #endif /* HANDLE_AS_UNKNOWN */ @@ -2388,14 +2518,14 @@ PNG_EXPORT(172, void, png_set_keep_unknown_chunks, (png_structrp png_ptr, * the result is therefore true (non-zero) if special handling is required, * false for the default handling. */ -PNG_EXPORT(173, int, png_handle_as_unknown, (png_const_structrp png_ptr, - png_const_bytep chunk_name)); +PNG_EXPORT(173, int, png_handle_as_unknown, + (png_const_structrp png_ptr, png_const_bytep chunk_name)); #endif /* SET_UNKNOWN_CHUNKS */ #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED -PNG_EXPORT(174, void, png_set_unknown_chunks, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_unknown_chunkp unknowns, - int num_unknowns)); +PNG_EXPORT(174, void, png_set_unknown_chunks, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_const_unknown_chunkp unknowns, int num_unknowns)); /* NOTE: prior to 1.6.0 this routine set the 'location' field of the added * unknowns to the location currently stored in the png_struct. This is * invariably the wrong value on write. To fix this call the following API @@ -2406,43 +2536,47 @@ PNG_EXPORT(174, void, png_set_unknown_chunks, (png_const_structrp png_ptr, */ PNG_EXPORT(175, void, png_set_unknown_chunk_location, - (png_const_structrp png_ptr, png_inforp info_ptr, int chunk, int location)); + (png_const_structrp png_ptr, png_inforp info_ptr, + int chunk, int location)); -PNG_EXPORT(176, int, png_get_unknown_chunks, (png_const_structrp png_ptr, - png_inforp info_ptr, png_unknown_chunkpp entries)); +PNG_EXPORT(176, int, png_get_unknown_chunks, + (png_const_structrp png_ptr, png_inforp info_ptr, + png_unknown_chunkpp entries)); #endif /* Png_free_data() will turn off the "valid" flag for anything it frees. * If you need to turn it off for a chunk that your application has freed, * you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK); */ -PNG_EXPORT(177, void, png_set_invalid, (png_const_structrp png_ptr, - png_inforp info_ptr, int mask)); +PNG_EXPORT(177, void, png_set_invalid, + (png_const_structrp png_ptr, png_inforp info_ptr, int mask)); #ifdef PNG_INFO_IMAGE_SUPPORTED /* The "params" pointer is currently not used and is for future expansion. */ #ifdef PNG_SEQUENTIAL_READ_SUPPORTED -PNG_EXPORT(178, void, png_read_png, (png_structrp png_ptr, png_inforp info_ptr, +PNG_EXPORT(178, void, png_read_png, + (png_structrp png_ptr, png_inforp info_ptr, int transforms, png_voidp params)); #endif #ifdef PNG_WRITE_SUPPORTED -PNG_EXPORT(179, void, png_write_png, (png_structrp png_ptr, png_inforp info_ptr, +PNG_EXPORT(179, void, png_write_png, + (png_structrp png_ptr, png_inforp info_ptr, int transforms, png_voidp params)); #endif #endif PNG_EXPORT(180, png_const_charp, png_get_copyright, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); PNG_EXPORT(181, png_const_charp, png_get_header_ver, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); PNG_EXPORT(182, png_const_charp, png_get_header_version, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); PNG_EXPORT(183, png_const_charp, png_get_libpng_ver, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); #ifdef PNG_MNG_FEATURES_SUPPORTED -PNG_EXPORT(184, png_uint_32, png_permit_mng_features, (png_structrp png_ptr, - png_uint_32 mng_features_permitted)); +PNG_EXPORT(184, png_uint_32, png_permit_mng_features, + (png_structrp png_ptr, png_uint_32 mng_features_permitted)); #endif /* For use in png_set_keep_unknown, added to version 1.2.6 */ @@ -2456,71 +2590,74 @@ PNG_EXPORT(184, png_uint_32, png_permit_mng_features, (png_structrp png_ptr, * messages before passing them to the error or warning handler. */ #ifdef PNG_ERROR_NUMBERS_SUPPORTED -PNG_EXPORT(185, void, png_set_strip_error_numbers, (png_structrp png_ptr, - png_uint_32 strip_mode)); +PNG_EXPORT(185, void, png_set_strip_error_numbers, + (png_structrp png_ptr, png_uint_32 strip_mode)); #endif /* Added in libpng-1.2.6 */ #ifdef PNG_SET_USER_LIMITS_SUPPORTED -PNG_EXPORT(186, void, png_set_user_limits, (png_structrp png_ptr, +PNG_EXPORT(186, void, png_set_user_limits, + (png_structrp png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max)); PNG_EXPORT(187, png_uint_32, png_get_user_width_max, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); PNG_EXPORT(188, png_uint_32, png_get_user_height_max, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); /* Added in libpng-1.4.0 */ -PNG_EXPORT(189, void, png_set_chunk_cache_max, (png_structrp png_ptr, - png_uint_32 user_chunk_cache_max)); +PNG_EXPORT(189, void, png_set_chunk_cache_max, + (png_structrp png_ptr, png_uint_32 user_chunk_cache_max)); PNG_EXPORT(190, png_uint_32, png_get_chunk_cache_max, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); /* Added in libpng-1.4.1 */ -PNG_EXPORT(191, void, png_set_chunk_malloc_max, (png_structrp png_ptr, - png_alloc_size_t user_chunk_cache_max)); +PNG_EXPORT(191, void, png_set_chunk_malloc_max, + (png_structrp png_ptr, png_alloc_size_t user_chunk_cache_max)); PNG_EXPORT(192, png_alloc_size_t, png_get_chunk_malloc_max, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); #endif #if defined(PNG_INCH_CONVERSIONS_SUPPORTED) PNG_EXPORT(193, png_uint_32, png_get_pixels_per_inch, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); PNG_EXPORT(194, png_uint_32, png_get_x_pixels_per_inch, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); PNG_EXPORT(195, png_uint_32, png_get_y_pixels_per_inch, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); + (png_const_structrp png_ptr, png_const_inforp info_ptr)); PNG_FP_EXPORT(196, float, png_get_x_offset_inches, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) + (png_const_structrp png_ptr, png_const_inforp info_ptr)) #ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */ PNG_FIXED_EXPORT(211, png_fixed_point, png_get_x_offset_inches_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) + (png_const_structrp png_ptr, png_const_inforp info_ptr)) #endif -PNG_FP_EXPORT(197, float, png_get_y_offset_inches, (png_const_structrp png_ptr, - png_const_inforp info_ptr)) +PNG_FP_EXPORT(197, float, png_get_y_offset_inches, + (png_const_structrp png_ptr, png_const_inforp info_ptr)) #ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */ PNG_FIXED_EXPORT(212, png_fixed_point, png_get_y_offset_inches_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) + (png_const_structrp png_ptr, png_const_inforp info_ptr)) #endif # ifdef PNG_pHYs_SUPPORTED -PNG_EXPORT(198, png_uint_32, png_get_pHYs_dpi, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, - int *unit_type)); +PNG_EXPORT(198, png_uint_32, png_get_pHYs_dpi, + (png_const_structrp png_ptr, png_const_inforp info_ptr, + png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)); # endif /* pHYs */ #endif /* INCH_CONVERSIONS */ /* Added in libpng-1.4.0 */ #ifdef PNG_IO_STATE_SUPPORTED -PNG_EXPORT(199, png_uint_32, png_get_io_state, (png_const_structrp png_ptr)); +PNG_EXPORT(199, png_uint_32, png_get_io_state, + (png_const_structrp png_ptr)); /* Removed from libpng 1.6; use png_get_io_chunk_type. */ -PNG_REMOVED(200, png_const_bytep, png_get_io_chunk_name, (png_structrp png_ptr), - PNG_DEPRECATED) +PNG_REMOVED(200, png_const_bytep, png_get_io_chunk_name, + (png_structrp png_ptr), + PNG_DEPRECATED) PNG_EXPORT(216, png_uint_32, png_get_io_chunk_type, - (png_const_structrp png_ptr)); + (png_const_structrp png_ptr)); /* The flags returned by png_get_io_state() are the following: */ # define PNG_IO_NONE 0x0000 /* no I/O at this moment */ @@ -2645,21 +2782,26 @@ PNG_EXPORT(216, png_uint_32, png_get_io_chunk_type, #endif /* READ_COMPOSITE_NODIV */ #ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED -PNG_EXPORT(201, png_uint_32, png_get_uint_32, (png_const_bytep buf)); -PNG_EXPORT(202, png_uint_16, png_get_uint_16, (png_const_bytep buf)); -PNG_EXPORT(203, png_int_32, png_get_int_32, (png_const_bytep buf)); +PNG_EXPORT(201, png_uint_32, png_get_uint_32, + (png_const_bytep buf)); +PNG_EXPORT(202, png_uint_16, png_get_uint_16, + (png_const_bytep buf)); +PNG_EXPORT(203, png_int_32, png_get_int_32, + (png_const_bytep buf)); #endif -PNG_EXPORT(204, png_uint_32, png_get_uint_31, (png_const_structrp png_ptr, - png_const_bytep buf)); +PNG_EXPORT(204, png_uint_32, png_get_uint_31, + (png_const_structrp png_ptr, png_const_bytep buf)); /* No png_get_int_16 -- may be added if there's a real need for it. */ /* Place a 32-bit number into a buffer in PNG byte order (big-endian). */ #ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED -PNG_EXPORT(205, void, png_save_uint_32, (png_bytep buf, png_uint_32 i)); +PNG_EXPORT(205, void, png_save_uint_32, + (png_bytep buf, png_uint_32 i)); #endif #ifdef PNG_SAVE_INT_32_SUPPORTED -PNG_EXPORT(206, void, png_save_int_32, (png_bytep buf, png_int_32 i)); +PNG_EXPORT(206, void, png_save_int_32, + (png_bytep buf, png_int_32 i)); #endif /* Place a 16-bit number into a buffer in PNG byte order. @@ -2667,7 +2809,8 @@ PNG_EXPORT(206, void, png_save_int_32, (png_bytep buf, png_int_32 i)); * just to avoid potential problems on pre-ANSI C compilers. */ #ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED -PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i)); +PNG_EXPORT(207, void, png_save_uint_16, + (png_bytep buf, unsigned int i)); /* No png_save_int_16 -- may be added if there's a real need for it. */ #endif @@ -2714,10 +2857,10 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i)); #ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED PNG_EXPORT(242, void, png_set_check_for_invalid_index, - (png_structrp png_ptr, int allowed)); + (png_structrp png_ptr, int allowed)); # ifdef PNG_GET_PALETTE_MAX_SUPPORTED -PNG_EXPORT(243, int, png_get_palette_max, (png_const_structp png_ptr, - png_const_infop info_ptr)); +PNG_EXPORT(243, int, png_get_palette_max, + (png_const_structp png_ptr, png_const_infop info_ptr)); # endif #endif /* CHECK_FOR_INVALID_INDEX */ @@ -3081,24 +3224,25 @@ typedef struct * the png_controlp field 'opaque' to NULL (or, safer, memset the whole thing.) */ #ifdef PNG_STDIO_SUPPORTED -PNG_EXPORT(234, int, png_image_begin_read_from_file, (png_imagep image, - const char *file_name)); +PNG_EXPORT(234, int, png_image_begin_read_from_file, + (png_imagep image, const char *file_name)); /* The named file is opened for read and the image header is filled in * from the PNG header in the file. */ -PNG_EXPORT(235, int, png_image_begin_read_from_stdio, (png_imagep image, - FILE *file)); +PNG_EXPORT(235, int, png_image_begin_read_from_stdio, + (png_imagep image, FILE *file)); /* The PNG header is read from the stdio FILE object. */ #endif /* STDIO */ -PNG_EXPORT(236, int, png_image_begin_read_from_memory, (png_imagep image, - png_const_voidp memory, size_t size)); +PNG_EXPORT(236, int, png_image_begin_read_from_memory, + (png_imagep image, png_const_voidp memory, size_t size)); /* The PNG header is read from the given memory buffer. */ -PNG_EXPORT(237, int, png_image_finish_read, (png_imagep image, - png_const_colorp background, void *buffer, png_int_32 row_stride, - void *colormap)); +PNG_EXPORT(237, int, png_image_finish_read, + (png_imagep image, + png_const_colorp background, void *buffer, png_int_32 row_stride, + void *colormap)); /* Finish reading the image into the supplied buffer and clean up the * png_image structure. * @@ -3131,7 +3275,8 @@ PNG_EXPORT(237, int, png_image_finish_read, (png_imagep image, * written to the colormap; this may be less than the original value. */ -PNG_EXPORT(238, void, png_image_free, (png_imagep image)); +PNG_EXPORT(238, void, png_image_free, + (png_imagep image)); /* Free any data allocated by libpng in image->opaque, setting the pointer to * NULL. May be called at any time after the structure is initialized. */ @@ -3155,14 +3300,16 @@ PNG_EXPORT(238, void, png_image_free, (png_imagep image)); * colormap_entries: set to the number of entries in the color-map (0 to 256) */ #ifdef PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED -PNG_EXPORT(239, int, png_image_write_to_file, (png_imagep image, - const char *file, int convert_to_8bit, const void *buffer, - png_int_32 row_stride, const void *colormap)); +PNG_EXPORT(239, int, png_image_write_to_file, + (png_imagep image, + const char *file, int convert_to_8bit, const void *buffer, + png_int_32 row_stride, const void *colormap)); /* Write the image to the named file. */ -PNG_EXPORT(240, int, png_image_write_to_stdio, (png_imagep image, FILE *file, - int convert_to_8_bit, const void *buffer, png_int_32 row_stride, - const void *colormap)); +PNG_EXPORT(240, int, png_image_write_to_stdio, + (png_imagep image, + FILE *file, int convert_to_8_bit, const void *buffer, + png_int_32 row_stride, const void *colormap)); /* Write the image to the given FILE object. */ #endif /* SIMPLIFIED_WRITE_STDIO */ @@ -3187,9 +3334,11 @@ PNG_EXPORT(240, int, png_image_write_to_stdio, (png_imagep image, FILE *file, * notices) you need to use one of the other APIs. */ -PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory, - png_alloc_size_t * PNG_RESTRICT memory_bytes, int convert_to_8_bit, - const void *buffer, png_int_32 row_stride, const void *colormap)); +PNG_EXPORT(245, int, png_image_write_to_memory, + (png_imagep image, + void *memory, png_alloc_size_t * PNG_RESTRICT memory_bytes, + int convert_to_8_bit, + const void *buffer, png_int_32 row_stride, const void *colormap)); /* Write the image to the given memory buffer. The function both writes the * whole PNG data stream to *memory and updates *memory_bytes with the count * of bytes written. @@ -3365,7 +3514,7 @@ PNG_EXPORT(244, int, png_set_option, (png_structrp png_ptr, int option, * one to use is one more than this.) */ #ifdef PNG_EXPORT_LAST_ORDINAL - PNG_EXPORT_LAST_ORDINAL(259); + PNG_EXPORT_LAST_ORDINAL(259); #endif #ifdef __cplusplus diff --git a/png/pngconf.h b/png/pngconf.h index d1081b54d..1f511f57c 100644 --- a/png/pngconf.h +++ b/png/pngconf.h @@ -1,8 +1,8 @@ /* pngconf.h - machine-configurable file for libpng * - * libpng version 1.6.50 + * libpng version 1.6.54 * - * Copyright (c) 2018-2025 Cosmin Truta + * Copyright (c) 2018-2026 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. diff --git a/png/pngdebug.h b/png/pngdebug.h index af1ae9e82..0337918ae 100644 --- a/png/pngdebug.h +++ b/png/pngdebug.h @@ -38,9 +38,6 @@ #define PNGDEBUG_H /* These settings control the formatting of messages in png.c and pngerror.c */ /* Moved to pngdebug.h at 1.5.0 */ -# ifndef PNG_LITERAL_SHARP -# define PNG_LITERAL_SHARP 0x23 -# endif # ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET # define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b # endif diff --git a/png/pngerror.c b/png/pngerror.c index 01a7ef534..72dc20ea8 100644 --- a/png/pngerror.c +++ b/png/pngerror.c @@ -39,46 +39,6 @@ PNG_FUNCTION(void,PNGAPI png_error,(png_const_structrp png_ptr, png_const_charp error_message), PNG_NORETURN) { -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - char msg[16]; - if (png_ptr != NULL) - { - if ((png_ptr->flags & - (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) != 0) - { - if (*error_message == PNG_LITERAL_SHARP) - { - /* Strip "#nnnn " from beginning of error message. */ - int offset; - for (offset = 1; offset<15; offset++) - if (error_message[offset] == ' ') - break; - - if ((png_ptr->flags & PNG_FLAG_STRIP_ERROR_TEXT) != 0) - { - int i; - for (i = 0; i < offset - 1; i++) - msg[i] = error_message[i + 1]; - msg[i - 1] = '\0'; - error_message = msg; - } - - else - error_message += offset; - } - - else - { - if ((png_ptr->flags & PNG_FLAG_STRIP_ERROR_TEXT) != 0) - { - msg[0] = '0'; - msg[1] = '\0'; - error_message = msg; - } - } - } - } -#endif if (png_ptr != NULL && png_ptr->error_fn != NULL) (*(png_ptr->error_fn))(png_constcast(png_structrp,png_ptr), error_message); @@ -89,7 +49,8 @@ png_error,(png_const_structrp png_ptr, png_const_charp error_message), } #else PNG_FUNCTION(void,PNGAPI -png_err,(png_const_structrp png_ptr),PNG_NORETURN) +png_err,(png_const_structrp png_ptr), + PNG_NORETURN) { /* Prior to 1.5.2 the error_fn received a NULL pointer, expressed * erroneously as '\0', instead of the empty string "". This was @@ -216,21 +177,6 @@ void PNGAPI png_warning(png_const_structrp png_ptr, png_const_charp warning_message) { int offset = 0; - if (png_ptr != NULL) - { -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - if ((png_ptr->flags & - (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) != 0) -#endif - { - if (*warning_message == PNG_LITERAL_SHARP) - { - for (offset = 1; offset < 15; offset++) - if (warning_message[offset] == ' ') - break; - } - } - } if (png_ptr != NULL && png_ptr->warning_fn != NULL) (*(png_ptr->warning_fn))(png_constcast(png_structrp,png_ptr), warning_message + offset); @@ -431,8 +377,8 @@ static const char png_digit[16] = { }; static void /* PRIVATE */ -png_format_buffer(png_const_structrp png_ptr, png_charp buffer, png_const_charp - error_message) +png_format_buffer(png_const_structrp png_ptr, png_charp buffer, + png_const_charp error_message) { png_uint_32 chunk_name = png_ptr->chunk_name; int iout = 0, ishift = 24; @@ -511,8 +457,8 @@ png_chunk_warning(png_const_structrp png_ptr, png_const_charp warning_message) #ifdef PNG_READ_SUPPORTED #ifdef PNG_BENIGN_ERRORS_SUPPORTED void PNGAPI -png_chunk_benign_error(png_const_structrp png_ptr, png_const_charp - error_message) +png_chunk_benign_error(png_const_structrp png_ptr, + png_const_charp error_message) { if ((png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN) != 0) png_chunk_warning(png_ptr, error_message); @@ -569,7 +515,8 @@ png_chunk_report(png_const_structrp png_ptr, png_const_charp message, int error) #ifdef PNG_ERROR_TEXT_SUPPORTED #ifdef PNG_FLOATING_POINT_SUPPORTED PNG_FUNCTION(void, -png_fixed_error,(png_const_structrp png_ptr, png_const_charp name),PNG_NORETURN) +png_fixed_error,(png_const_structrp png_ptr, png_const_charp name), + PNG_NORETURN) { # define fixed_message "fixed point overflow in " # define fixed_message_ln ((sizeof fixed_message)-1) @@ -712,42 +659,9 @@ png_default_error,(png_const_structrp png_ptr, png_const_charp error_message), PNG_NORETURN) { #ifdef PNG_CONSOLE_IO_SUPPORTED -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - /* Check on NULL only added in 1.5.4 */ - if (error_message != NULL && *error_message == PNG_LITERAL_SHARP) - { - /* Strip "#nnnn " from beginning of error message. */ - int offset; - char error_number[16]; - for (offset = 0; offset<15; offset++) - { - error_number[offset] = error_message[offset + 1]; - if (error_message[offset] == ' ') - break; - } - - if ((offset > 1) && (offset < 15)) - { - error_number[offset - 1] = '\0'; - fprintf(stderr, "libpng error no. %s: %s", - error_number, error_message + offset + 1); - fprintf(stderr, PNG_STRING_NEWLINE); - } - - else - { - fprintf(stderr, "libpng error: %s, offset=%d", - error_message, offset); - fprintf(stderr, PNG_STRING_NEWLINE); - } - } - else -#endif - { - fprintf(stderr, "libpng error: %s", error_message ? error_message : - "undefined"); - fprintf(stderr, PNG_STRING_NEWLINE); - } + fprintf(stderr, "libpng error: %s", error_message ? error_message : + "undefined"); + fprintf(stderr, PNG_STRING_NEWLINE); #else PNG_UNUSED(error_message) /* Make compiler happy */ #endif @@ -755,7 +669,8 @@ png_default_error,(png_const_structrp png_ptr, png_const_charp error_message), } PNG_FUNCTION(void,PNGAPI -png_longjmp,(png_const_structrp png_ptr, int val),PNG_NORETURN) +png_longjmp,(png_const_structrp png_ptr, int val), + PNG_NORETURN) { #ifdef PNG_SETJMP_SUPPORTED if (png_ptr != NULL && png_ptr->longjmp_fn != NULL && @@ -785,40 +700,8 @@ static void /* PRIVATE */ png_default_warning(png_const_structrp png_ptr, png_const_charp warning_message) { #ifdef PNG_CONSOLE_IO_SUPPORTED -# ifdef PNG_ERROR_NUMBERS_SUPPORTED - if (*warning_message == PNG_LITERAL_SHARP) - { - int offset; - char warning_number[16]; - for (offset = 0; offset < 15; offset++) - { - warning_number[offset] = warning_message[offset + 1]; - if (warning_message[offset] == ' ') - break; - } - - if ((offset > 1) && (offset < 15)) - { - warning_number[offset + 1] = '\0'; - fprintf(stderr, "libpng warning no. %s: %s", - warning_number, warning_message + offset); - fprintf(stderr, PNG_STRING_NEWLINE); - } - - else - { - fprintf(stderr, "libpng warning: %s", - warning_message); - fprintf(stderr, PNG_STRING_NEWLINE); - } - } - else -# endif - - { - fprintf(stderr, "libpng warning: %s", warning_message); - fprintf(stderr, PNG_STRING_NEWLINE); - } + fprintf(stderr, "libpng warning: %s", warning_message); + fprintf(stderr, PNG_STRING_NEWLINE); #else PNG_UNUSED(warning_message) /* Make compiler happy */ #endif @@ -866,12 +749,8 @@ png_get_error_ptr(png_const_structrp png_ptr) void PNGAPI png_set_strip_error_numbers(png_structrp png_ptr, png_uint_32 strip_mode) { - if (png_ptr != NULL) - { - png_ptr->flags &= - ((~(PNG_FLAG_STRIP_ERROR_NUMBERS | - PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode); - } + PNG_UNUSED(png_ptr) + PNG_UNUSED(strip_mode) } #endif diff --git a/png/pngget.c b/png/pngget.c index 1ebb1144f..9c7e8a12d 100644 --- a/png/pngget.c +++ b/png/pngget.c @@ -122,8 +122,8 @@ png_get_compression_type(png_const_structrp png_ptr, png_const_inforp info_ptr) } png_uint_32 PNGAPI -png_get_x_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp - info_ptr) +png_get_x_pixels_per_meter(png_const_structrp png_ptr, + png_const_inforp info_ptr) { #ifdef PNG_pHYs_SUPPORTED png_debug(1, "in png_get_x_pixels_per_meter"); @@ -143,8 +143,8 @@ png_get_x_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp } png_uint_32 PNGAPI -png_get_y_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp - info_ptr) +png_get_y_pixels_per_meter(png_const_structrp png_ptr, + png_const_inforp info_ptr) { #ifdef PNG_pHYs_SUPPORTED png_debug(1, "in png_get_y_pixels_per_meter"); @@ -186,8 +186,8 @@ png_get_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp info_ptr) #ifdef PNG_FLOATING_POINT_SUPPORTED float PNGAPI -png_get_pixel_aspect_ratio(png_const_structrp png_ptr, png_const_inforp - info_ptr) +png_get_pixel_aspect_ratio(png_const_structrp png_ptr, + png_const_inforp info_ptr) { #ifdef PNG_READ_pHYs_SUPPORTED png_debug(1, "in png_get_pixel_aspect_ratio"); @@ -737,7 +737,6 @@ png_get_iCCP(png_const_structrp png_ptr, png_inforp info_ptr, } return 0; - } #endif diff --git a/png/pnglibconf.h b/png/pnglibconf.h index f3022e6fc..e7ca63983 100644 --- a/png/pnglibconf.h +++ b/png/pnglibconf.h @@ -1,8 +1,8 @@ /* pnglibconf.h - library build configuration */ -/* libpng version 1.6.50 */ +/* libpng version 1.6.54 */ -/* Copyright (c) 2018-2025 Cosmin Truta */ +/* Copyright (c) 2018-2026 Cosmin Truta */ /* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */ /* This code is released under the libpng license. */ diff --git a/png/pngmem.c b/png/pngmem.c index 71e61c99f..b7adff82f 100644 --- a/png/pngmem.c +++ b/png/pngmem.c @@ -46,7 +46,8 @@ png_destroy_png_struct(png_structrp png_ptr) * have the ability to do that. */ PNG_FUNCTION(png_voidp,PNGAPI -png_calloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED) +png_calloc,(png_const_structrp png_ptr, png_alloc_size_t size), + PNG_ALLOCATED) { png_voidp ret; @@ -118,7 +119,8 @@ png_malloc_array_checked(png_const_structrp png_ptr, int nelements, PNG_FUNCTION(png_voidp /* PRIVATE */, png_malloc_array,(png_const_structrp png_ptr, int nelements, - size_t element_size),PNG_ALLOCATED) + size_t element_size), + PNG_ALLOCATED) { if (nelements <= 0 || element_size == 0) png_error(png_ptr, "internal error: array alloc"); @@ -128,7 +130,8 @@ png_malloc_array,(png_const_structrp png_ptr, int nelements, PNG_FUNCTION(png_voidp /* PRIVATE */, png_realloc_array,(png_const_structrp png_ptr, png_const_voidp old_array, - int old_elements, int add_elements, size_t element_size),PNG_ALLOCATED) + int old_elements, int add_elements, size_t element_size), + PNG_ALLOCATED) { /* These are internal errors: */ if (add_elements <= 0 || element_size == 0 || old_elements < 0 || @@ -167,7 +170,8 @@ png_realloc_array,(png_const_structrp png_ptr, png_const_voidp old_array, * function png_malloc_default is also provided. */ PNG_FUNCTION(png_voidp,PNGAPI -png_malloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED) +png_malloc,(png_const_structrp png_ptr, png_alloc_size_t size), + PNG_ALLOCATED) { png_voidp ret; @@ -241,7 +245,8 @@ png_free(png_const_structrp png_ptr, png_voidp ptr) } PNG_FUNCTION(void,PNGAPI -png_free_default,(png_const_structrp png_ptr, png_voidp ptr),PNG_DEPRECATED) +png_free_default,(png_const_structrp png_ptr, png_voidp ptr), + PNG_DEPRECATED) { if (png_ptr == NULL || ptr == NULL) return; @@ -255,8 +260,8 @@ png_free_default,(png_const_structrp png_ptr, png_voidp ptr),PNG_DEPRECATED) * of allocating and freeing memory. */ void PNGAPI -png_set_mem_fn(png_structrp png_ptr, png_voidp mem_ptr, png_malloc_ptr - malloc_fn, png_free_ptr free_fn) +png_set_mem_fn(png_structrp png_ptr, png_voidp mem_ptr, + png_malloc_ptr malloc_fn, png_free_ptr free_fn) { if (png_ptr != NULL) { diff --git a/png/pngpriv.h b/png/pngpriv.h index e3054b90a..f91666c70 100644 --- a/png/pngpriv.h +++ b/png/pngpriv.h @@ -302,7 +302,7 @@ # define PNG_LOONGARCH_LSX_IMPLEMENTATION 0 #endif -#if PNG_RISCV_RVV_OPT > 0 +#if PNG_RISCV_RVV_OPT > 0 && __riscv_v >= 1000000 # define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_rvv # ifndef PNG_RISCV_RVV_IMPLEMENTATION /* Use the intrinsics code by default. */ @@ -310,7 +310,7 @@ # endif #else # define PNG_RISCV_RVV_IMPLEMENTATION 0 -#endif +#endif /* PNG_RISCV_RVV_OPT > 0 && __riscv_v >= 1000000 */ /* Is this a build of a DLL where compilation of the object modules requires * different preprocessor settings to those required for a simple library? If @@ -710,7 +710,7 @@ /* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000U */ /* #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000U */ #define PNG_FLAG_LIBRARY_MISMATCH 0x20000U -#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000U + /* 0x40000U unused */ #define PNG_FLAG_STRIP_ERROR_TEXT 0x80000U #define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000U /* Added to libpng-1.4.0 */ #define PNG_FLAG_APP_WARNINGS_WARN 0x200000U /* Added to libpng-1.6.0 */ @@ -1075,15 +1075,17 @@ extern "C" { */ /* Zlib support */ #define PNG_UNEXPECTED_ZLIB_RETURN (-7) -PNG_INTERNAL_FUNCTION(void, png_zstream_error,(png_structrp png_ptr, int ret), +PNG_INTERNAL_FUNCTION(void, png_zstream_error, + (png_structrp png_ptr, int ret), PNG_EMPTY); /* Used by the zlib handling functions to ensure that z_stream::msg is always * set before they return. */ #ifdef PNG_WRITE_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_free_buffer_list,(png_structrp png_ptr, - png_compression_bufferp *list),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_free_buffer_list, + (png_structrp png_ptr, png_compression_bufferp *list), + PNG_EMPTY); /* Free the buffer list used by the compressed write code. */ #endif @@ -1095,22 +1097,25 @@ PNG_INTERNAL_FUNCTION(void,png_free_buffer_list,(png_structrp png_ptr, defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)) || \ (defined(PNG_sCAL_SUPPORTED) && \ defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)) -PNG_INTERNAL_FUNCTION(png_fixed_point,png_fixed,(png_const_structrp png_ptr, - double fp, png_const_charp text),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_fixed_point, png_fixed, + (png_const_structrp png_ptr, double fp, png_const_charp text), + PNG_EMPTY); #endif #if defined(PNG_FLOATING_POINT_SUPPORTED) && \ !defined(PNG_FIXED_POINT_MACRO_SUPPORTED) && \ (defined(PNG_cLLI_SUPPORTED) || defined(PNG_mDCV_SUPPORTED)) -PNG_INTERNAL_FUNCTION(png_uint_32,png_fixed_ITU,(png_const_structrp png_ptr, - double fp, png_const_charp text),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_uint_32, png_fixed_ITU, + (png_const_structrp png_ptr, double fp, png_const_charp text), + PNG_EMPTY); #endif /* Check the user version string for compatibility, returns false if the version * numbers aren't compatible. */ -PNG_INTERNAL_FUNCTION(int,png_user_version_check,(png_structrp png_ptr, - png_const_charp user_png_ver),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_user_version_check, + (png_structrp png_ptr, png_const_charp user_png_ver), + PNG_EMPTY); #ifdef PNG_READ_SUPPORTED /* should only be used on read */ /* Security: read limits on the largest allocations while reading a PNG. This @@ -1135,24 +1140,28 @@ PNG_INTERNAL_FUNCTION(int,png_user_version_check,(png_structrp png_ptr, * does, however, call the application provided allocator and that could call * png_error (although that would be a bug in the application implementation.) */ -PNG_INTERNAL_FUNCTION(png_voidp,png_malloc_base,(png_const_structrp png_ptr, - png_alloc_size_t size),PNG_ALLOCATED); +PNG_INTERNAL_FUNCTION(png_voidp, png_malloc_base, + (png_const_structrp png_ptr, png_alloc_size_t size), + PNG_ALLOCATED); #if defined(PNG_TEXT_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) ||\ defined(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED) /* Internal array allocator, outputs no error or warning messages on failure, * just returns NULL. */ -PNG_INTERNAL_FUNCTION(png_voidp,png_malloc_array,(png_const_structrp png_ptr, - int nelements, size_t element_size),PNG_ALLOCATED); +PNG_INTERNAL_FUNCTION(png_voidp, png_malloc_array, + (png_const_structrp png_ptr, int nelements, size_t element_size), + PNG_ALLOCATED); /* The same but an existing array is extended by add_elements. This function * also memsets the new elements to 0 and copies the old elements. The old * array is not freed or altered. */ -PNG_INTERNAL_FUNCTION(png_voidp,png_realloc_array,(png_const_structrp png_ptr, - png_const_voidp array, int old_elements, int add_elements, - size_t element_size),PNG_ALLOCATED); +PNG_INTERNAL_FUNCTION(png_voidp, png_realloc_array, + (png_const_structrp png_ptr, + png_const_voidp array, int old_elements, int add_elements, + size_t element_size), + PNG_ALLOCATED); #endif /* text, sPLT or unknown chunks */ /* Magic to create a struct when there is no struct to call the user supplied @@ -1161,84 +1170,106 @@ PNG_INTERNAL_FUNCTION(png_voidp,png_realloc_array,(png_const_structrp png_ptr, * restriction so libpng has to assume that the 'free' handler, at least, might * call png_error. */ -PNG_INTERNAL_FUNCTION(png_structp,png_create_png_struct, - (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, - png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn, - png_free_ptr free_fn),PNG_ALLOCATED); +PNG_INTERNAL_FUNCTION(png_structp, png_create_png_struct, + (png_const_charp user_png_ver, + png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn, + png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn), + PNG_ALLOCATED); /* Free memory from internal libpng struct */ -PNG_INTERNAL_FUNCTION(void,png_destroy_png_struct,(png_structrp png_ptr), +PNG_INTERNAL_FUNCTION(void, png_destroy_png_struct, + (png_structrp png_ptr), PNG_EMPTY); /* Free an allocated jmp_buf (always succeeds) */ -PNG_INTERNAL_FUNCTION(void,png_free_jmpbuf,(png_structrp png_ptr),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_free_jmpbuf, + (png_structrp png_ptr), + PNG_EMPTY); /* Function to allocate memory for zlib. PNGAPI is disallowed. */ -PNG_INTERNAL_FUNCTION(voidpf,png_zalloc,(voidpf png_ptr, uInt items, uInt size), +PNG_INTERNAL_FUNCTION(voidpf, png_zalloc, + (voidpf png_ptr, uInt items, uInt size), PNG_ALLOCATED); /* Function to free memory for zlib. PNGAPI is disallowed. */ -PNG_INTERNAL_FUNCTION(void,png_zfree,(voidpf png_ptr, voidpf ptr),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_zfree, + (voidpf png_ptr, voidpf ptr), + PNG_EMPTY); /* Next four functions are used internally as callbacks. PNGCBAPI is required * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3, changed to * PNGCBAPI at 1.5.0 */ -PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_read_data,(png_structp png_ptr, - png_bytep data, size_t length),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void PNGCBAPI, png_default_read_data, + (png_structp png_ptr, png_bytep data, size_t length), + PNG_EMPTY); #ifdef PNG_PROGRESSIVE_READ_SUPPORTED -PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_push_fill_buffer,(png_structp png_ptr, - png_bytep buffer, size_t length),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void PNGCBAPI, png_push_fill_buffer, + (png_structp png_ptr, png_bytep buffer, size_t length), + PNG_EMPTY); #endif -PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_write_data,(png_structp png_ptr, - png_bytep data, size_t length),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void PNGCBAPI, png_default_write_data, + (png_structp png_ptr, png_bytep data, size_t length), + PNG_EMPTY); #ifdef PNG_WRITE_FLUSH_SUPPORTED # ifdef PNG_STDIO_SUPPORTED -PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_flush,(png_structp png_ptr), +PNG_INTERNAL_FUNCTION(void PNGCBAPI, png_default_flush, + (png_structp png_ptr), PNG_EMPTY); # endif #endif /* Reset the CRC variable */ -PNG_INTERNAL_FUNCTION(void,png_reset_crc,(png_structrp png_ptr),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_reset_crc, + (png_structrp png_ptr), + PNG_EMPTY); /* Write the "data" buffer to whatever output you are using */ -PNG_INTERNAL_FUNCTION(void,png_write_data,(png_structrp png_ptr, - png_const_bytep data, size_t length),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_data, + (png_structrp png_ptr, png_const_bytep data, size_t length), + PNG_EMPTY); /* Read and check the PNG file signature */ -PNG_INTERNAL_FUNCTION(void,png_read_sig,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_sig, + (png_structrp png_ptr, png_inforp info_ptr), + PNG_EMPTY); /* Read the chunk header (length + type name) */ -PNG_INTERNAL_FUNCTION(png_uint_32,png_read_chunk_header,(png_structrp png_ptr), +PNG_INTERNAL_FUNCTION(png_uint_32, png_read_chunk_header, + (png_structrp png_ptr), PNG_EMPTY); /* Read data from whatever input you are using into the "data" buffer */ -PNG_INTERNAL_FUNCTION(void,png_read_data,(png_structrp png_ptr, png_bytep data, - size_t length),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_data, + (png_structrp png_ptr, png_bytep data, size_t length), + PNG_EMPTY); /* Read bytes into buf, and update png_ptr->crc */ -PNG_INTERNAL_FUNCTION(void,png_crc_read,(png_structrp png_ptr, png_bytep buf, - png_uint_32 length),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_crc_read, + (png_structrp png_ptr, png_bytep buf, png_uint_32 length), + PNG_EMPTY); /* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */ -PNG_INTERNAL_FUNCTION(int,png_crc_finish,(png_structrp png_ptr, - png_uint_32 skip),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_crc_finish, + (png_structrp png_ptr, png_uint_32 skip), + PNG_EMPTY); /* Calculate the CRC over a section of data. Note that we are only * passing a maximum of 64K on systems that have this as a memory limit, * since this is the maximum buffer size we can specify. */ -PNG_INTERNAL_FUNCTION(void,png_calculate_crc,(png_structrp png_ptr, - png_const_bytep ptr, size_t length),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_calculate_crc, + (png_structrp png_ptr, png_const_bytep ptr, size_t length), + PNG_EMPTY); #ifdef PNG_WRITE_FLUSH_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_flush,(png_structrp png_ptr),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_flush, + (png_structrp png_ptr), + PNG_EMPTY); #endif /* Write various chunks */ @@ -1246,68 +1277,86 @@ PNG_INTERNAL_FUNCTION(void,png_flush,(png_structrp png_ptr),PNG_EMPTY); /* Write the IHDR chunk, and update the png_struct with the necessary * information. */ -PNG_INTERNAL_FUNCTION(void,png_write_IHDR,(png_structrp png_ptr, - png_uint_32 width, png_uint_32 height, int bit_depth, int color_type, - int compression_method, int filter_method, int interlace_method),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_IHDR, + (png_structrp png_ptr, + png_uint_32 width, png_uint_32 height, int bit_depth, int color_type, + int compression_method, int filter_method, int interlace_method), + PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_write_PLTE,(png_structrp png_ptr, - png_const_colorp palette, png_uint_32 num_pal),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_PLTE, + (png_structrp png_ptr, + png_const_colorp palette, png_uint_32 num_pal), + PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_compress_IDAT,(png_structrp png_ptr, - png_const_bytep row_data, png_alloc_size_t row_data_length, int flush), +PNG_INTERNAL_FUNCTION(void, png_compress_IDAT, + (png_structrp png_ptr, + png_const_bytep row_data, png_alloc_size_t row_data_length, int flush), PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_write_IEND,(png_structrp png_ptr),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_IEND, + (png_structrp png_ptr), + PNG_EMPTY); #ifdef PNG_WRITE_gAMA_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_gAMA_fixed,(png_structrp png_ptr, - png_fixed_point file_gamma),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_gAMA_fixed, + (png_structrp png_ptr, png_fixed_point file_gamma), + PNG_EMPTY); #endif #ifdef PNG_WRITE_sBIT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_sBIT,(png_structrp png_ptr, - png_const_color_8p sbit, int color_type),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_sBIT, + (png_structrp png_ptr, png_const_color_8p sbit, int color_type), + PNG_EMPTY); #endif #ifdef PNG_WRITE_cHRM_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_cHRM_fixed,(png_structrp png_ptr, - const png_xy *xy), PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_cHRM_fixed, + (png_structrp png_ptr, const png_xy *xy), + PNG_EMPTY); /* The xy value must have been previously validated */ #endif #ifdef PNG_WRITE_cICP_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_cICP,(png_structrp png_ptr, +PNG_INTERNAL_FUNCTION(void, png_write_cICP, + (png_structrp png_ptr, png_byte colour_primaries, png_byte transfer_function, - png_byte matrix_coefficients, png_byte video_full_range_flag), PNG_EMPTY); + png_byte matrix_coefficients, png_byte video_full_range_flag), + PNG_EMPTY); #endif #ifdef PNG_WRITE_cLLI_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_cLLI_fixed,(png_structrp png_ptr, - png_uint_32 maxCLL, png_uint_32 maxFALL), PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_cLLI_fixed, + (png_structrp png_ptr, png_uint_32 maxCLL, png_uint_32 maxFALL), + PNG_EMPTY); #endif #ifdef PNG_WRITE_mDCV_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_mDCV_fixed,(png_structrp png_ptr, - png_uint_16 red_x, png_uint_16 red_y, - png_uint_16 green_x, png_uint_16 green_y, - png_uint_16 blue_x, png_uint_16 blue_y, - png_uint_16 white_x, png_uint_16 white_y, - png_uint_32 maxDL, png_uint_32 minDL), PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_mDCV_fixed, + (png_structrp png_ptr, + png_uint_16 red_x, png_uint_16 red_y, + png_uint_16 green_x, png_uint_16 green_y, + png_uint_16 blue_x, png_uint_16 blue_y, + png_uint_16 white_x, png_uint_16 white_y, + png_uint_32 maxDL, png_uint_32 minDL), + PNG_EMPTY); #endif #ifdef PNG_WRITE_sRGB_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_sRGB,(png_structrp png_ptr, - int intent),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_sRGB, + (png_structrp png_ptr, int intent), + PNG_EMPTY); #endif #ifdef PNG_WRITE_eXIf_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_eXIf,(png_structrp png_ptr, - png_bytep exif, int num_exif),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_eXIf, + (png_structrp png_ptr, png_bytep exif, int num_exif), + PNG_EMPTY); #endif #ifdef PNG_WRITE_iCCP_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_iCCP,(png_structrp png_ptr, - png_const_charp name, png_const_bytep profile, png_uint_32 proflen), +PNG_INTERNAL_FUNCTION(void, png_write_iCCP, + (png_structrp png_ptr, + png_const_charp name, png_const_bytep profile, png_uint_32 proflen), PNG_EMPTY); /* Writes a previously 'set' profile. The profile argument is **not** * compressed. @@ -1315,82 +1364,106 @@ PNG_INTERNAL_FUNCTION(void,png_write_iCCP,(png_structrp png_ptr, #endif #ifdef PNG_WRITE_sPLT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_sPLT,(png_structrp png_ptr, - png_const_sPLT_tp palette),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_sPLT, + (png_structrp png_ptr, png_const_sPLT_tp palette), + PNG_EMPTY); #endif #ifdef PNG_WRITE_tRNS_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_tRNS,(png_structrp png_ptr, +PNG_INTERNAL_FUNCTION(void, png_write_tRNS, + (png_structrp png_ptr, png_const_bytep trans, png_const_color_16p values, int number, - int color_type),PNG_EMPTY); + int color_type), + PNG_EMPTY); #endif #ifdef PNG_WRITE_bKGD_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_bKGD,(png_structrp png_ptr, - png_const_color_16p values, int color_type),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_bKGD, + (png_structrp png_ptr, png_const_color_16p values, int color_type), + PNG_EMPTY); #endif #ifdef PNG_WRITE_hIST_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_hIST,(png_structrp png_ptr, - png_const_uint_16p hist, int num_hist),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_hIST, + (png_structrp png_ptr, png_const_uint_16p hist, int num_hist), + PNG_EMPTY); #endif /* Chunks that have keywords */ #ifdef PNG_WRITE_tEXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_tEXt,(png_structrp png_ptr, - png_const_charp key, png_const_charp text, size_t text_len),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_tEXt, + (png_structrp png_ptr, + png_const_charp key, png_const_charp text, size_t text_len), + PNG_EMPTY); #endif #ifdef PNG_WRITE_zTXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_zTXt,(png_structrp png_ptr, png_const_charp - key, png_const_charp text, int compression),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_zTXt, + (png_structrp png_ptr, + png_const_charp key, png_const_charp text, int compression), + PNG_EMPTY); #endif #ifdef PNG_WRITE_iTXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_iTXt,(png_structrp png_ptr, +PNG_INTERNAL_FUNCTION(void, png_write_iTXt, + (png_structrp png_ptr, int compression, png_const_charp key, png_const_charp lang, - png_const_charp lang_key, png_const_charp text),PNG_EMPTY); + png_const_charp lang_key, png_const_charp text), + PNG_EMPTY); #endif #ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */ -PNG_INTERNAL_FUNCTION(int,png_set_text_2,(png_const_structrp png_ptr, - png_inforp info_ptr, png_const_textp text_ptr, int num_text),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_set_text_2, + (png_const_structrp png_ptr, + png_inforp info_ptr, png_const_textp text_ptr, int num_text), + PNG_EMPTY); #endif #ifdef PNG_WRITE_oFFs_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_oFFs,(png_structrp png_ptr, - png_int_32 x_offset, png_int_32 y_offset, int unit_type),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_oFFs, + (png_structrp png_ptr, + png_int_32 x_offset, png_int_32 y_offset, int unit_type), + PNG_EMPTY); #endif #ifdef PNG_WRITE_pCAL_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_pCAL,(png_structrp png_ptr, - png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, - png_const_charp units, png_charpp params),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_pCAL, + (png_structrp png_ptr, + png_charp purpose, png_int_32 X0, png_int_32 X1, + int type, int nparams, png_const_charp units, png_charpp params), + PNG_EMPTY); #endif #ifdef PNG_WRITE_pHYs_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_pHYs,(png_structrp png_ptr, +PNG_INTERNAL_FUNCTION(void, png_write_pHYs, + (png_structrp png_ptr, png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, - int unit_type),PNG_EMPTY); + int unit_type), + PNG_EMPTY); #endif #ifdef PNG_WRITE_tIME_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_tIME,(png_structrp png_ptr, - png_const_timep mod_time),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_tIME, + (png_structrp png_ptr, png_const_timep mod_time), + PNG_EMPTY); #endif #ifdef PNG_WRITE_sCAL_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_sCAL_s,(png_structrp png_ptr, - int unit, png_const_charp width, png_const_charp height),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_sCAL_s, + (png_structrp png_ptr, + int unit, png_const_charp width, png_const_charp height), + PNG_EMPTY); #endif /* Called when finished processing a row of data */ -PNG_INTERNAL_FUNCTION(void,png_write_finish_row,(png_structrp png_ptr), - PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_finish_row, + (png_structrp png_ptr), + PNG_EMPTY); /* Internal use only. Called before first row of data */ -PNG_INTERNAL_FUNCTION(void,png_write_start_row,(png_structrp png_ptr), - PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_start_row, + (png_structrp png_ptr), + PNG_EMPTY); /* Combine a row of data, dealing with alpha, etc. if requested. 'row' is an * array of png_ptr->width pixels. If the image is not interlaced or this @@ -1418,8 +1491,9 @@ PNG_INTERNAL_FUNCTION(void,png_write_start_row,(png_structrp png_ptr), #ifndef PNG_USE_COMPILE_TIME_MASKS # define PNG_USE_COMPILE_TIME_MASKS 1 #endif -PNG_INTERNAL_FUNCTION(void,png_combine_row,(png_const_structrp png_ptr, - png_bytep row, int display),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_combine_row, + (png_const_structrp png_ptr, png_bytep row, int display), + PNG_EMPTY); #ifdef PNG_READ_INTERLACING_SUPPORTED /* Expand an interlaced row: the 'row_info' describes the pass data that has @@ -1428,170 +1502,230 @@ PNG_INTERNAL_FUNCTION(void,png_combine_row,(png_const_structrp png_ptr, * the pixels are *replicated* to the intervening space. This is essential for * the correct operation of png_combine_row, above. */ -PNG_INTERNAL_FUNCTION(void,png_do_read_interlace,(png_row_infop row_info, - png_bytep row, int pass, png_uint_32 transformations),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_read_interlace, + (png_row_infop row_info, + png_bytep row, int pass, png_uint_32 transformations), + PNG_EMPTY); #endif /* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */ #ifdef PNG_WRITE_INTERLACING_SUPPORTED /* Grab pixels out of a row for an interlaced pass */ -PNG_INTERNAL_FUNCTION(void,png_do_write_interlace,(png_row_infop row_info, - png_bytep row, int pass),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_write_interlace, + (png_row_infop row_info, png_bytep row, int pass), + PNG_EMPTY); #endif /* Unfilter a row: check the filter value before calling this, there is no point * calling it for PNG_FILTER_VALUE_NONE. */ -PNG_INTERNAL_FUNCTION(void,png_read_filter_row,(png_structrp pp, png_row_infop - row_info, png_bytep row, png_const_bytep prev_row, int filter),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row, + (png_structrp pp, png_row_infop row_info, + png_bytep row, png_const_bytep prev_row, int filter), + PNG_EMPTY); #if PNG_ARM_NEON_OPT > 0 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_neon,(png_row_infop row_info, - png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_up_neon, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub3_neon, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub4_neon, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg3_neon, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg4_neon, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth3_neon, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth4_neon, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); #endif #if PNG_MIPS_MSA_IMPLEMENTATION == 1 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_msa,(png_row_infop row_info, - png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_up_msa, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub3_msa, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub4_msa, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg3_msa, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg4_msa, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth3_msa, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth4_msa, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); #endif #if PNG_MIPS_MMI_IMPLEMENTATION > 0 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_mmi,(png_row_infop row_info, - png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_mmi,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_mmi,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_mmi,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_mmi,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_mmi,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_mmi,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_up_mmi, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub3_mmi, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub4_mmi, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg3_mmi, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg4_mmi, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth3_mmi, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth4_mmi, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); #endif #if PNG_POWERPC_VSX_OPT > 0 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_vsx,(png_row_infop row_info, - png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_up_vsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub3_vsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub4_vsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg3_vsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg4_vsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth3_vsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth4_vsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); #endif #if PNG_INTEL_SSE_IMPLEMENTATION > 0 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub3_sse2, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub4_sse2, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg3_sse2, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg4_sse2, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth3_sse2, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth4_sse2, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); #endif #if PNG_LOONGARCH_LSX_IMPLEMENTATION == 1 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_lsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_lsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_lsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_lsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_lsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_lsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_lsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -#endif - -#if PNG_RISCV_RVV_OPT > 0 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_rvv,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_rvv,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_rvv,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_rvv,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_rvv,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_rvv,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_rvv,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_up_lsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub3_lsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub4_lsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg3_lsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg4_lsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth3_lsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth4_lsx, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +#endif + +#if PNG_RISCV_RVV_IMPLEMENTATION == 1 +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_up_rvv, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub3_rvv, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_sub4_rvv, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg3_rvv, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_avg4_rvv, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth3_rvv, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_filter_row_paeth4_rvv, + (png_row_infop row_info, png_bytep row, png_const_bytep prev_row), + PNG_EMPTY); #endif /* Choose the best filter to use and filter the row data */ -PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr, - png_row_infop row_info),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_write_find_filter, + (png_structrp png_ptr, png_row_infop row_info), + PNG_EMPTY); #ifdef PNG_SEQUENTIAL_READ_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_read_IDAT_data,(png_structrp png_ptr, - png_bytep output, png_alloc_size_t avail_out),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_IDAT_data, + (png_structrp png_ptr, png_bytep output, png_alloc_size_t avail_out), + PNG_EMPTY); /* Read 'avail_out' bytes of data from the IDAT stream. If the output buffer * is NULL the function checks, instead, for the end of the stream. In this * case a benign error will be issued if the stream end is not found or if * extra data has to be consumed. */ -PNG_INTERNAL_FUNCTION(void,png_read_finish_IDAT,(png_structrp png_ptr), +PNG_INTERNAL_FUNCTION(void, png_read_finish_IDAT, + (png_structrp png_ptr), PNG_EMPTY); /* This cleans up when the IDAT LZ stream does not end when the last image * byte is read; there is still some pending input. */ -PNG_INTERNAL_FUNCTION(void,png_read_finish_row,(png_structrp png_ptr), +PNG_INTERNAL_FUNCTION(void, png_read_finish_row, + (png_structrp png_ptr), PNG_EMPTY); /* Finish a row while reading, dealing with interlacing passes, etc. */ #endif /* SEQUENTIAL_READ */ /* Initialize the row buffers, etc. */ -PNG_INTERNAL_FUNCTION(void,png_read_start_row,(png_structrp png_ptr),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_start_row, + (png_structrp png_ptr), + PNG_EMPTY); #if ZLIB_VERNUM >= 0x1240 -PNG_INTERNAL_FUNCTION(int,png_zlib_inflate,(png_structrp png_ptr, int flush), - PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_zlib_inflate, + (png_structrp png_ptr, int flush), + PNG_EMPTY); # define PNG_INFLATE(pp, flush) png_zlib_inflate(pp, flush) #else /* Zlib < 1.2.4 */ # define PNG_INFLATE(pp, flush) inflate(&(pp)->zstream, flush) @@ -1599,38 +1733,44 @@ PNG_INTERNAL_FUNCTION(int,png_zlib_inflate,(png_structrp png_ptr, int flush), #ifdef PNG_READ_TRANSFORMS_SUPPORTED /* Optional call to update the users info structure */ -PNG_INTERNAL_FUNCTION(void,png_read_transform_info,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_transform_info, + (png_structrp png_ptr, png_inforp info_ptr), + PNG_EMPTY); #endif /* Shared transform functions, defined in pngtran.c */ #if defined(PNG_WRITE_FILLER_SUPPORTED) || \ defined(PNG_READ_STRIP_ALPHA_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_strip_channel,(png_row_infop row_info, - png_bytep row, int at_start),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_strip_channel, + (png_row_infop row_info, png_bytep row, int at_start), + PNG_EMPTY); #endif #ifdef PNG_16BIT_SUPPORTED #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_swap,(png_row_infop row_info, - png_bytep row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_swap, + (png_row_infop row_info, png_bytep row), + PNG_EMPTY); #endif #endif #if defined(PNG_READ_PACKSWAP_SUPPORTED) || \ defined(PNG_WRITE_PACKSWAP_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_packswap,(png_row_infop row_info, - png_bytep row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_packswap, + (png_row_infop row_info, png_bytep row), + PNG_EMPTY); #endif #if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_invert,(png_row_infop row_info, - png_bytep row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_invert, + (png_row_infop row_info, png_bytep row), + PNG_EMPTY); #endif #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_bgr,(png_row_infop row_info, - png_bytep row),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_bgr, + (png_row_infop row_info, png_bytep row), + PNG_EMPTY); #endif /* The following decodes the appropriate chunks, and does error correction, @@ -1651,25 +1791,27 @@ typedef enum handled_ok /* known, supported and handled without error */ } png_handle_result_code; -PNG_INTERNAL_FUNCTION(png_handle_result_code,png_handle_unknown, - (png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length, int keep), - PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_handle_result_code, png_handle_unknown, + (png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length, int keep), + PNG_EMPTY); /* This is the function that gets called for unknown chunks. The 'keep' * argument is either non-zero for a known chunk that has been set to be * handled as unknown or zero for an unknown chunk. By default the function * just skips the chunk or errors out if it is critical. */ -PNG_INTERNAL_FUNCTION(png_handle_result_code,png_handle_chunk, - (png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_handle_result_code, png_handle_chunk, + (png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length), + PNG_EMPTY); /* This handles the current chunk png_ptr->chunk_name with unread * data[length] and returns one of the above result codes. */ #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) ||\ defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) -PNG_INTERNAL_FUNCTION(int,png_chunk_unknown_handling, - (png_const_structrp png_ptr, png_uint_32 chunk_name),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_chunk_unknown_handling, + (png_const_structrp png_ptr, png_uint_32 chunk_name), + PNG_EMPTY); /* Exactly as the API png_handle_as_unknown() except that the argument is a * 32-bit chunk name, not a string. */ @@ -1677,93 +1819,122 @@ PNG_INTERNAL_FUNCTION(int,png_chunk_unknown_handling, /* Handle the transformations for reading and writing */ #ifdef PNG_READ_TRANSFORMS_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_do_read_transformations,(png_structrp png_ptr, - png_row_infop row_info),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_read_transformations, + (png_structrp png_ptr, png_row_infop row_info), + PNG_EMPTY); #endif #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_do_write_transformations,(png_structrp png_ptr, - png_row_infop row_info),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_write_transformations, + (png_structrp png_ptr, png_row_infop row_info), + PNG_EMPTY); #endif #ifdef PNG_READ_TRANSFORMS_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_init_read_transformations,(png_structrp png_ptr), - PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_init_read_transformations, + (png_structrp png_ptr), + PNG_EMPTY); #endif #ifdef PNG_PROGRESSIVE_READ_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_push_read_chunk,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_read_sig,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_check_crc,(png_structrp png_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_save_buffer,(png_structrp png_ptr), - PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_restore_buffer,(png_structrp png_ptr, - png_bytep buffer, size_t buffer_length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_read_IDAT,(png_structrp png_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_process_IDAT_data,(png_structrp png_ptr, - png_bytep buffer, size_t buffer_length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_process_row,(png_structrp png_ptr), - PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_have_info,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_have_end,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_have_row,(png_structrp png_ptr, - png_bytep row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_read_end,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_process_some_data,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_push_finish_row,(png_structrp png_ptr), - PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_read_chunk, + (png_structrp png_ptr, png_inforp info_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_read_sig, + (png_structrp png_ptr, png_inforp info_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_check_crc, + (png_structrp png_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_save_buffer, + (png_structrp png_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_restore_buffer, + (png_structrp png_ptr, png_bytep buffer, size_t buffer_length), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_read_IDAT, + (png_structrp png_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_process_IDAT_data, + (png_structrp png_ptr, png_bytep buffer, size_t buffer_length), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_process_row, + (png_structrp png_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_have_info, + (png_structrp png_ptr, png_inforp info_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_have_end, + (png_structrp png_ptr, png_inforp info_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_have_row, + (png_structrp png_ptr, png_bytep row), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_push_read_end, + (png_structrp png_ptr, png_inforp info_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_process_some_data, + (png_structrp png_ptr, png_inforp info_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_read_push_finish_row, + (png_structrp png_ptr), + PNG_EMPTY); #endif /* PROGRESSIVE_READ */ #ifdef PNG_iCCP_SUPPORTED /* Routines for checking parts of an ICC profile. */ #ifdef PNG_READ_iCCP_SUPPORTED -PNG_INTERNAL_FUNCTION(int,png_icc_check_length,(png_const_structrp png_ptr, - png_const_charp name, png_uint_32 profile_length), PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_icc_check_length, + (png_const_structrp png_ptr, + png_const_charp name, png_uint_32 profile_length), + PNG_EMPTY); #endif /* READ_iCCP */ -PNG_INTERNAL_FUNCTION(int,png_icc_check_header,(png_const_structrp png_ptr, - png_const_charp name, png_uint_32 profile_length, - png_const_bytep profile /* first 132 bytes only */, int color_type), +PNG_INTERNAL_FUNCTION(int, png_icc_check_header, + (png_const_structrp png_ptr, + png_const_charp name, png_uint_32 profile_length, + png_const_bytep profile /* first 132 bytes only */, int color_type), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_icc_check_tag_table, + (png_const_structrp png_ptr, + png_const_charp name, png_uint_32 profile_length, + png_const_bytep profile /* header plus whole tag table */), PNG_EMPTY); -PNG_INTERNAL_FUNCTION(int,png_icc_check_tag_table,(png_const_structrp png_ptr, - png_const_charp name, png_uint_32 profile_length, - png_const_bytep profile /* header plus whole tag table */), PNG_EMPTY); #endif /* iCCP */ #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_set_rgb_coefficients, (png_structrp png_ptr), +PNG_INTERNAL_FUNCTION(void, png_set_rgb_coefficients, + (png_structrp png_ptr), PNG_EMPTY); /* Set the rgb_to_gray coefficients from the cHRM Y values (if unset) */ #endif /* READ_RGB_TO_GRAY */ /* Added at libpng version 1.4.0 */ -PNG_INTERNAL_FUNCTION(void,png_check_IHDR,(png_const_structrp png_ptr, - png_uint_32 width, png_uint_32 height, int bit_depth, - int color_type, int interlace_type, int compression_type, - int filter_type),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_check_IHDR, + (png_const_structrp png_ptr, + png_uint_32 width, png_uint_32 height, int bit_depth, int color_type, + int interlace_type, int compression_type, int filter_type), + PNG_EMPTY); /* Added at libpng version 1.5.10 */ #if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \ defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_check_palette_indexes, - (png_structrp png_ptr, png_row_infop row_info),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_do_check_palette_indexes, + (png_structrp png_ptr, png_row_infop row_info), + PNG_EMPTY); #endif #if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_fixed_error,(png_const_structrp png_ptr, - png_const_charp name),PNG_NORETURN); +PNG_INTERNAL_FUNCTION(void, png_fixed_error, + (png_const_structrp png_ptr, png_const_charp name), + PNG_NORETURN); #endif /* Puts 'string' into 'buffer' at buffer[pos], taking care never to overwrite * the end. Always leaves the buffer nul terminated. Never errors out (and * there is no error code.) */ -PNG_INTERNAL_FUNCTION(size_t,png_safecat,(png_charp buffer, size_t bufsize, - size_t pos, png_const_charp string),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(size_t, png_safecat, + (png_charp buffer, size_t bufsize, size_t pos, png_const_charp string), + PNG_EMPTY); /* Various internal functions to handle formatted warning messages, currently * only implemented for warnings. @@ -1774,8 +1945,9 @@ PNG_INTERNAL_FUNCTION(size_t,png_safecat,(png_charp buffer, size_t bufsize, * Returns the pointer to the start of the formatted string. This utility only * does unsigned values. */ -PNG_INTERNAL_FUNCTION(png_charp,png_format_number,(png_const_charp start, - png_charp end, int format, png_alloc_size_t number),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_charp, png_format_number, + (png_const_charp start, png_charp end, int format, png_alloc_size_t number), + PNG_EMPTY); /* Convenience macro that takes an array: */ #define PNG_FORMAT_NUMBER(buffer,format,number) \ @@ -1807,23 +1979,26 @@ PNG_INTERNAL_FUNCTION(png_charp,png_format_number,(png_const_charp start, typedef char png_warning_parameters[PNG_WARNING_PARAMETER_COUNT][ PNG_WARNING_PARAMETER_SIZE]; -PNG_INTERNAL_FUNCTION(void,png_warning_parameter,(png_warning_parameters p, - int number, png_const_charp string),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_warning_parameter, + (png_warning_parameters p, int number, png_const_charp string), + PNG_EMPTY); /* Parameters are limited in size to PNG_WARNING_PARAMETER_SIZE characters, * including the trailing '\0'. */ -PNG_INTERNAL_FUNCTION(void,png_warning_parameter_unsigned, +PNG_INTERNAL_FUNCTION(void, png_warning_parameter_unsigned, (png_warning_parameters p, int number, int format, png_alloc_size_t value), PNG_EMPTY); /* Use png_alloc_size_t because it is an unsigned type as big as any we * need to output. Use the following for a signed value. */ -PNG_INTERNAL_FUNCTION(void,png_warning_parameter_signed, +PNG_INTERNAL_FUNCTION(void, png_warning_parameter_signed, (png_warning_parameters p, int number, int format, png_int_32 value), PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_formatted_warning,(png_const_structrp png_ptr, - png_warning_parameters p, png_const_charp message),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_formatted_warning, + (png_const_structrp png_ptr, + png_warning_parameters p, png_const_charp message), + PNG_EMPTY); /* 'message' follows the X/Open approach of using @1, @2 to insert * parameters previously supplied using the above functions. Errors in * specifying the parameters will simply result in garbage substitutions. @@ -1845,14 +2020,16 @@ PNG_INTERNAL_FUNCTION(void,png_formatted_warning,(png_const_structrp png_ptr, * If benign errors aren't supported they end up as the corresponding base call * (png_warning or png_error.) */ -PNG_INTERNAL_FUNCTION(void,png_app_warning,(png_const_structrp png_ptr, - png_const_charp message),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_app_warning, + (png_const_structrp png_ptr, png_const_charp message), + PNG_EMPTY); /* The application provided invalid parameters to an API function or called * an API function at the wrong time, libpng can completely recover. */ -PNG_INTERNAL_FUNCTION(void,png_app_error,(png_const_structrp png_ptr, - png_const_charp message),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_app_error, + (png_const_structrp png_ptr, png_const_charp message), + PNG_EMPTY); /* As above but libpng will ignore the call, or attempt some other partial * recovery from the error. */ @@ -1861,8 +2038,9 @@ PNG_INTERNAL_FUNCTION(void,png_app_error,(png_const_structrp png_ptr, # define png_app_error(pp,s) png_error(pp,s) #endif -PNG_INTERNAL_FUNCTION(void,png_chunk_report,(png_const_structrp png_ptr, - png_const_charp message, int error),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_chunk_report, + (png_const_structrp png_ptr, png_const_charp message, int error), + PNG_EMPTY); /* Report a recoverable issue in chunk data. On read this is used to report * a problem found while reading a particular chunk and the * png_chunk_benign_error or png_chunk_warning function is used as @@ -1888,14 +2066,17 @@ PNG_INTERNAL_FUNCTION(void,png_chunk_report,(png_const_structrp png_ptr, #define PNG_sCAL_MAX_DIGITS (PNG_sCAL_PRECISION+1/*.*/+1/*E*/+10/*exponent*/) #ifdef PNG_FLOATING_POINT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_ascii_from_fp,(png_const_structrp png_ptr, - png_charp ascii, size_t size, double fp, unsigned int precision), +PNG_INTERNAL_FUNCTION(void, png_ascii_from_fp, + (png_const_structrp png_ptr, + png_charp ascii, size_t size, double fp, unsigned int precision), PNG_EMPTY); #endif /* FLOATING_POINT */ #ifdef PNG_FIXED_POINT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_ascii_from_fixed,(png_const_structrp png_ptr, - png_charp ascii, size_t size, png_fixed_point fp),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_ascii_from_fixed, + (png_const_structrp png_ptr, + png_charp ascii, size_t size, png_fixed_point fp), + PNG_EMPTY); #endif /* FIXED_POINT */ #endif /* sCAL */ @@ -1987,8 +2168,9 @@ PNG_INTERNAL_FUNCTION(void,png_ascii_from_fixed,(png_const_structrp png_ptr, * that omits the last character (i.e. set the size to the index of * the problem character.) This has not been tested within libpng. */ -PNG_INTERNAL_FUNCTION(int,png_check_fp_number,(png_const_charp string, - size_t size, int *statep, size_t *whereami),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_check_fp_number, + (png_const_charp string, size_t size, int *statep, size_t *whereami), + PNG_EMPTY); /* This is the same but it checks a complete string and returns true * only if it just contains a floating point number. As of 1.5.4 this @@ -1996,8 +2178,9 @@ PNG_INTERNAL_FUNCTION(int,png_check_fp_number,(png_const_charp string, * it was valid (otherwise it returns 0.) This can be used for testing * for negative or zero values using the sticky flag. */ -PNG_INTERNAL_FUNCTION(int,png_check_fp_string,(png_const_charp string, - size_t size),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_check_fp_string, + (png_const_charp string, size_t size), + PNG_EMPTY); #endif /* pCAL || sCAL */ #if defined(PNG_READ_GAMMA_SUPPORTED) ||\ @@ -2010,14 +2193,17 @@ PNG_INTERNAL_FUNCTION(int,png_check_fp_string,(png_const_charp string, * for overflow, true (1) if no overflow, in which case *res * holds the result. */ -PNG_INTERNAL_FUNCTION(int,png_muldiv,(png_fixed_point_p res, png_fixed_point a, - png_int_32 multiplied_by, png_int_32 divided_by),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_muldiv, + (png_fixed_point_p res, png_fixed_point a, + png_int_32 multiplied_by, png_int_32 divided_by), + PNG_EMPTY); /* Calculate a reciprocal - used for gamma values. This returns * 0 if the argument is 0 in order to maintain an undefined value; * there are no warnings. */ -PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal,(png_fixed_point a), +PNG_INTERNAL_FUNCTION(png_fixed_point, png_reciprocal, + (png_fixed_point a), PNG_EMPTY); #endif @@ -2026,11 +2212,13 @@ PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal,(png_fixed_point a), * values. Accuracy is suitable for gamma calculations but this is * not exact - use png_muldiv for that. Only required at present on read. */ -PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal2,(png_fixed_point a, - png_fixed_point b),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_fixed_point, png_reciprocal2, + (png_fixed_point a, png_fixed_point b), + PNG_EMPTY); /* Return true if the gamma value is significantly different from 1.0 */ -PNG_INTERNAL_FUNCTION(int,png_gamma_significant,(png_fixed_point gamma_value), +PNG_INTERNAL_FUNCTION(int, png_gamma_significant, + (png_fixed_point gamma_value), PNG_EMPTY); /* PNGv3: 'resolve' the file gamma according to the new PNGv3 rules for colour @@ -2041,8 +2229,9 @@ PNG_INTERNAL_FUNCTION(int,png_gamma_significant,(png_fixed_point gamma_value), * transforms. For this reason a gamma specified by png_set_gamma always takes * precedence. */ -PNG_INTERNAL_FUNCTION(png_fixed_point,png_resolve_file_gamma, - (png_const_structrp png_ptr),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_fixed_point, png_resolve_file_gamma, + (png_const_structrp png_ptr), + PNG_EMPTY); /* Internal fixed point gamma correction. These APIs are called as * required to convert single values - they don't need to be fast, @@ -2051,37 +2240,45 @@ PNG_INTERNAL_FUNCTION(png_fixed_point,png_resolve_file_gamma, * While the input is an 'unsigned' value it must actually be the * correct bit value - 0..255 or 0..65535 as required. */ -PNG_INTERNAL_FUNCTION(png_uint_16,png_gamma_correct,(png_structrp png_ptr, - unsigned int value, png_fixed_point gamma_value),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(png_uint_16,png_gamma_16bit_correct,(unsigned int value, - png_fixed_point gamma_value),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(png_byte,png_gamma_8bit_correct,(unsigned int value, - png_fixed_point gamma_value),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_destroy_gamma_table,(png_structrp png_ptr), +PNG_INTERNAL_FUNCTION(png_uint_16, png_gamma_correct, + (png_structrp png_ptr, unsigned int value, png_fixed_point gamma_value), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_uint_16, png_gamma_16bit_correct, + (unsigned int value, png_fixed_point gamma_value), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_byte, png_gamma_8bit_correct, + (unsigned int value, png_fixed_point gamma_value), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_destroy_gamma_table, + (png_structrp png_ptr), + PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_build_gamma_table, + (png_structrp png_ptr, int bit_depth), PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_build_gamma_table,(png_structrp png_ptr, - int bit_depth),PNG_EMPTY); #endif /* READ_GAMMA */ #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED /* Set the RGB coefficients if not already set by png_set_rgb_to_gray */ -PNG_INTERNAL_FUNCTION(void,png_set_rgb_coefficients,(png_structrp png_ptr), +PNG_INTERNAL_FUNCTION(void, png_set_rgb_coefficients, + (png_structrp png_ptr), PNG_EMPTY); #endif #if defined(PNG_cHRM_SUPPORTED) || defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) -PNG_INTERNAL_FUNCTION(int,png_XYZ_from_xy,(png_XYZ *XYZ, const png_xy *xy), +PNG_INTERNAL_FUNCTION(int, png_XYZ_from_xy, + (png_XYZ *XYZ, const png_xy *xy), PNG_EMPTY); #endif /* cHRM || READ_RGB_TO_GRAY */ #ifdef PNG_COLORSPACE_SUPPORTED -PNG_INTERNAL_FUNCTION(int,png_xy_from_XYZ,(png_xy *xy, const png_XYZ *XYZ), +PNG_INTERNAL_FUNCTION(int, png_xy_from_XYZ, + (png_xy *xy, const png_XYZ *XYZ), PNG_EMPTY); #endif /* SIMPLIFIED READ/WRITE SUPPORT */ #if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\ - defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) + defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) /* The internal structure that png_image::opaque points to. */ typedef struct png_control { @@ -2109,28 +2306,34 @@ typedef struct png_control * errors that might occur. Returns true on success, false on failure (either * of the function or as a result of a png_error.) */ -PNG_INTERNAL_CALLBACK(void,png_safe_error,(png_structp png_ptr, - png_const_charp error_message),PNG_NORETURN); +PNG_INTERNAL_CALLBACK(void, png_safe_error, + (png_structp png_ptr, png_const_charp error_message), + PNG_NORETURN); #ifdef PNG_WARNINGS_SUPPORTED -PNG_INTERNAL_CALLBACK(void,png_safe_warning,(png_structp png_ptr, - png_const_charp warning_message),PNG_EMPTY); +PNG_INTERNAL_CALLBACK(void, png_safe_warning, + (png_structp png_ptr, png_const_charp warning_message), + PNG_EMPTY); #else # define png_safe_warning 0/*dummy argument*/ #endif -PNG_INTERNAL_FUNCTION(int,png_safe_execute,(png_imagep image, - int (*function)(png_voidp), png_voidp arg),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_safe_execute, + (png_imagep image, int (*function)(png_voidp), png_voidp arg), + PNG_EMPTY); /* Utility to log an error; this also cleans up the png_image; the function * always returns 0 (false). */ -PNG_INTERNAL_FUNCTION(int,png_image_error,(png_imagep image, - png_const_charp error_message),PNG_EMPTY); +PNG_INTERNAL_FUNCTION(int, png_image_error, + (png_imagep image, png_const_charp error_message), + PNG_EMPTY); #ifndef PNG_SIMPLIFIED_READ_SUPPORTED /* png_image_free is used by the write code but not exported */ -PNG_INTERNAL_FUNCTION(void, png_image_free, (png_imagep image), PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, png_image_free, + (png_imagep image), + PNG_EMPTY); #endif /* !SIMPLIFIED_READ */ #endif /* SIMPLIFIED READ/WRITE */ @@ -2141,8 +2344,9 @@ PNG_INTERNAL_FUNCTION(void, png_image_free, (png_imagep image), PNG_EMPTY); * the generic code is used. */ #ifdef PNG_FILTER_OPTIMIZATIONS -PNG_INTERNAL_FUNCTION(void, PNG_FILTER_OPTIMIZATIONS, (png_structp png_ptr, - unsigned int bpp), PNG_EMPTY); +PNG_INTERNAL_FUNCTION(void, PNG_FILTER_OPTIMIZATIONS, + (png_structp png_ptr, unsigned int bpp), + PNG_EMPTY); /* Just declare the optimization that will be used */ #else /* List *all* the possible optimizations here - this branch is required if @@ -2151,37 +2355,44 @@ PNG_INTERNAL_FUNCTION(void, PNG_FILTER_OPTIMIZATIONS, (png_structp png_ptr, */ # if PNG_ARM_NEON_OPT > 0 PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon, - (png_structp png_ptr, unsigned int bpp), PNG_EMPTY); + (png_structp png_ptr, unsigned int bpp), + PNG_EMPTY); #endif #if PNG_MIPS_MSA_IMPLEMENTATION == 1 PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_mips, - (png_structp png_ptr, unsigned int bpp), PNG_EMPTY); + (png_structp png_ptr, unsigned int bpp), + PNG_EMPTY); #endif # if PNG_MIPS_MMI_IMPLEMENTATION > 0 PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_mips, - (png_structp png_ptr, unsigned int bpp), PNG_EMPTY); + (png_structp png_ptr, unsigned int bpp), + PNG_EMPTY); # endif # if PNG_INTEL_SSE_IMPLEMENTATION > 0 PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_sse2, - (png_structp png_ptr, unsigned int bpp), PNG_EMPTY); + (png_structp png_ptr, unsigned int bpp), + PNG_EMPTY); # endif #endif #if PNG_LOONGARCH_LSX_OPT > 0 PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_lsx, - (png_structp png_ptr, unsigned int bpp), PNG_EMPTY); + (png_structp png_ptr, unsigned int bpp), + PNG_EMPTY); #endif -# if PNG_RISCV_RVV_OPT > 0 +# if PNG_RISCV_RVV_IMPLEMENTATION == 1 PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_rvv, - (png_structp png_ptr, unsigned int bpp), PNG_EMPTY); + (png_structp png_ptr, unsigned int bpp), + PNG_EMPTY); #endif -PNG_INTERNAL_FUNCTION(png_uint_32, png_check_keyword, (png_structrp png_ptr, - png_const_charp key, png_bytep new_key), PNG_EMPTY); +PNG_INTERNAL_FUNCTION(png_uint_32, png_check_keyword, + (png_structrp png_ptr, png_const_charp key, png_bytep new_key), + PNG_EMPTY); #if PNG_ARM_NEON_IMPLEMENTATION == 1 PNG_INTERNAL_FUNCTION(void, diff --git a/png/pngread.c b/png/pngread.c index 212afb7d2..af2f44c9c 100644 --- a/png/pngread.c +++ b/png/pngread.c @@ -1,6 +1,6 @@ /* pngread.c - read a PNG file * - * Copyright (c) 2018-2025 Cosmin Truta + * Copyright (c) 2018-2026 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. @@ -23,7 +23,8 @@ /* Create a PNG structure for reading, and allocate any memory needed. */ PNG_FUNCTION(png_structp,PNGAPI png_create_read_struct,(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED) + png_error_ptr error_fn, png_error_ptr warn_fn), + PNG_ALLOCATED) { #ifndef PNG_USER_MEM_SUPPORTED png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr, @@ -39,7 +40,8 @@ png_create_read_struct,(png_const_charp user_png_ver, png_voidp error_ptr, PNG_FUNCTION(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, - png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED) + png_malloc_ptr malloc_fn, png_free_ptr free_fn), + PNG_ALLOCATED) { png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr, error_fn, warn_fn, mem_ptr, malloc_fn, free_fn); @@ -519,7 +521,6 @@ png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row) if (png_ptr->read_row_fn != NULL) (*(png_ptr->read_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass); - } #endif /* SEQUENTIAL_READ */ @@ -867,7 +868,7 @@ png_set_read_status_fn(png_structrp png_ptr, png_read_status_ptr read_row_fn) #ifdef PNG_INFO_IMAGE_SUPPORTED void PNGAPI png_read_png(png_structrp png_ptr, png_inforp info_ptr, - int transforms, voidp params) + int transforms, png_voidp params) { png_debug(1, "in png_read_png"); @@ -1104,19 +1105,20 @@ png_read_png(png_structrp png_ptr, png_inforp info_ptr, typedef struct { - /* Arguments: */ + /* Arguments */ png_imagep image; - png_voidp buffer; + png_voidp buffer; png_int_32 row_stride; - png_voidp colormap; + png_voidp colormap; png_const_colorp background; - /* Local variables: */ - png_voidp local_row; - png_voidp first_row; - ptrdiff_t row_bytes; /* step between rows */ - int file_encoding; /* E_ values above */ - png_fixed_point gamma_to_linear; /* For P_FILE, reciprocal of gamma */ - int colormap_processing; /* PNG_CMAP_ values above */ + + /* Instance variables */ + png_voidp local_row; + png_voidp first_row; + ptrdiff_t row_step; /* step between rows */ + int file_encoding; /* E_ values above */ + png_fixed_point gamma_to_linear; /* For P_FILE, reciprocal of gamma */ + int colormap_processing; /* PNG_CMAP_ values above */ } png_image_read_control; /* Do all the *safe* initialization - 'safe' means that png_error won't be @@ -2837,17 +2839,17 @@ png_image_read_and_map(png_voidp argument) } { - png_uint_32 height = image->height; - png_uint_32 width = image->width; - int proc = display->colormap_processing; - png_bytep first_row = png_voidcast(png_bytep, display->first_row); - ptrdiff_t step_row = display->row_bytes; + png_uint_32 height = image->height; + png_uint_32 width = image->width; + int proc = display->colormap_processing; + png_bytep first_row = png_voidcast(png_bytep, display->first_row); + ptrdiff_t row_step = display->row_step; int pass; for (pass = 0; pass < passes; ++pass) { - unsigned int startx, stepx, stepy; - png_uint_32 y; + unsigned int startx, stepx, stepy; + png_uint_32 y; if (png_ptr->interlaced == PNG_INTERLACE_ADAM7) { @@ -2871,7 +2873,7 @@ png_image_read_and_map(png_voidp argument) for (; ylocal_row); - png_bytep outrow = first_row + y * step_row; + png_bytep outrow = first_row + y * row_step; png_const_bytep end_row = outrow + width; /* Read read the libpng data into the temporary buffer. */ @@ -3080,20 +3082,20 @@ png_image_read_colormapped(png_voidp argument) */ { png_voidp first_row = display->buffer; - ptrdiff_t row_bytes = display->row_stride; + ptrdiff_t row_step = display->row_stride; - /* The following expression is designed to work correctly whether it gives - * a signed or an unsigned result. + /* The following adjustment is to ensure that calculations are correct, + * regardless whether row_step is positive or negative. */ - if (row_bytes < 0) + if (row_step < 0) { char *ptr = png_voidcast(char*, first_row); - ptr += (image->height-1) * (-row_bytes); + ptr += (image->height-1) * (-row_step); first_row = png_voidcast(png_voidp, ptr); } display->first_row = first_row; - display->row_bytes = row_bytes; + display->row_step = row_step; } if (passes == 0) @@ -3111,17 +3113,17 @@ png_image_read_colormapped(png_voidp argument) else { - png_alloc_size_t row_bytes = (png_alloc_size_t)display->row_bytes; + ptrdiff_t row_step = display->row_step; while (--passes >= 0) { - png_uint_32 y = image->height; - png_bytep row = png_voidcast(png_bytep, display->first_row); + png_uint_32 y = image->height; + png_bytep row = png_voidcast(png_bytep, display->first_row); for (; y > 0; --y) { png_read_row(png_ptr, row, NULL); - row += row_bytes; + row += row_step; } } @@ -3129,6 +3131,61 @@ png_image_read_colormapped(png_voidp argument) } } +/* Row reading for interlaced 16-to-8 bit depth conversion with local buffer. */ +static int +png_image_read_direct_scaled(png_voidp argument) +{ + png_image_read_control *display = png_voidcast(png_image_read_control*, + argument); + png_imagep image = display->image; + png_structrp png_ptr = image->opaque->png_ptr; + png_inforp info_ptr = image->opaque->info_ptr; + png_bytep local_row = png_voidcast(png_bytep, display->local_row); + png_bytep first_row = png_voidcast(png_bytep, display->first_row); + ptrdiff_t row_step = display->row_step; + size_t row_bytes = png_get_rowbytes(png_ptr, info_ptr); + int passes; + + /* Handle interlacing. */ + switch (png_ptr->interlaced) + { + case PNG_INTERLACE_NONE: + passes = 1; + break; + + case PNG_INTERLACE_ADAM7: + passes = PNG_INTERLACE_ADAM7_PASSES; + break; + + default: + png_error(png_ptr, "unknown interlace type"); + } + + /* Read each pass using local_row as intermediate buffer. */ + while (--passes >= 0) + { + png_uint_32 y = image->height; + png_bytep output_row = first_row; + + for (; y > 0; --y) + { + /* Read into local_row (gets transformed 8-bit data). */ + png_read_row(png_ptr, local_row, NULL); + + /* Copy from local_row to user buffer. + * Use row_bytes (i.e. the actual size in bytes of the row data) for + * copying into output_row. Use row_step for advancing output_row, + * to respect the caller's stride for padding or negative (bottom-up) + * layouts. + */ + memcpy(output_row, local_row, row_bytes); + output_row += row_step; + } + } + + return 1; +} + /* Just the row reading part of png_image_read. */ static int png_image_read_composite(png_voidp argument) @@ -3154,17 +3211,18 @@ png_image_read_composite(png_voidp argument) } { - png_uint_32 height = image->height; - png_uint_32 width = image->width; - ptrdiff_t step_row = display->row_bytes; + png_uint_32 height = image->height; + png_uint_32 width = image->width; + ptrdiff_t row_step = display->row_step; unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ? 3 : 1; + int optimize_alpha = (png_ptr->flags & PNG_FLAG_OPTIMIZE_ALPHA) != 0; int pass; for (pass = 0; pass < passes; ++pass) { - unsigned int startx, stepx, stepy; - png_uint_32 y; + unsigned int startx, stepx, stepy; + png_uint_32 y; if (png_ptr->interlaced == PNG_INTERLACE_ADAM7) { @@ -3196,7 +3254,7 @@ png_image_read_composite(png_voidp argument) png_read_row(png_ptr, inrow, NULL); outrow = png_voidcast(png_bytep, display->first_row); - outrow += y * step_row; + outrow += y * row_step; end_row = outrow + width * channels; /* Now do the composition on each pixel in this row. */ @@ -3215,20 +3273,44 @@ png_image_read_composite(png_voidp argument) if (alpha < 255) /* else just use component */ { - /* This is PNG_OPTIMIZED_ALPHA, the component value - * is a linear 8-bit value. Combine this with the - * current outrow[c] value which is sRGB encoded. - * Arithmetic here is 16-bits to preserve the output - * values correctly. - */ - component *= 257*255; /* =65535 */ - component += (255-alpha)*png_sRGB_table[outrow[c]]; + if (optimize_alpha != 0) + { + /* This is PNG_OPTIMIZED_ALPHA, the component value + * is a linear 8-bit value. Combine this with the + * current outrow[c] value which is sRGB encoded. + * Arithmetic here is 16-bits to preserve the output + * values correctly. + */ + component *= 257*255; /* =65535 */ + component += (255-alpha)*png_sRGB_table[outrow[c]]; - /* So 'component' is scaled by 255*65535 and is - * therefore appropriate for the sRGB to linear - * conversion table. - */ - component = PNG_sRGB_FROM_LINEAR(component); + /* Clamp to the valid range to defend against + * unforeseen cases where the data might be sRGB + * instead of linear premultiplied. + * (Belt-and-suspenders for CVE-2025-66293.) + */ + if (component > 255*65535) + component = 255*65535; + + /* So 'component' is scaled by 255*65535 and is + * therefore appropriate for the sRGB-to-linear + * conversion table. + */ + component = PNG_sRGB_FROM_LINEAR(component); + } + else + { + /* Compositing was already done on the palette + * entries. The data is sRGB premultiplied on black. + * Composite with the background in sRGB space. + * This is not gamma-correct, but matches what was + * done to the palette. + */ + png_uint_32 background = outrow[c]; + component += ((255-alpha) * background + 127) / 255; + if (component > 255) + component = 255; + } } outrow[c] = (png_byte)component; @@ -3317,12 +3399,12 @@ png_image_read_background(png_voidp argument) */ { png_bytep first_row = png_voidcast(png_bytep, display->first_row); - ptrdiff_t step_row = display->row_bytes; + ptrdiff_t row_step = display->row_step; for (pass = 0; pass < passes; ++pass) { - unsigned int startx, stepx, stepy; - png_uint_32 y; + unsigned int startx, stepx, stepy; + png_uint_32 y; if (png_ptr->interlaced == PNG_INTERLACE_ADAM7) { @@ -3349,7 +3431,7 @@ png_image_read_background(png_voidp argument) { png_bytep inrow = png_voidcast(png_bytep, display->local_row); - png_bytep outrow = first_row + y * step_row; + png_bytep outrow = first_row + y * row_step; png_const_bytep end_row = outrow + width; /* Read the row, which is packed: */ @@ -3394,7 +3476,7 @@ png_image_read_background(png_voidp argument) { png_bytep inrow = png_voidcast(png_bytep, display->local_row); - png_bytep outrow = first_row + y * step_row; + png_bytep outrow = first_row + y * row_step; png_const_bytep end_row = outrow + width; /* Read the row, which is packed: */ @@ -3440,9 +3522,9 @@ png_image_read_background(png_voidp argument) png_uint_16p first_row = png_voidcast(png_uint_16p, display->first_row); /* The division by two is safe because the caller passed in a - * stride which was multiplied by 2 (below) to get row_bytes. + * stride which was multiplied by 2 (below) to get row_step. */ - ptrdiff_t step_row = display->row_bytes / 2; + ptrdiff_t row_step = display->row_step / 2; unsigned int preserve_alpha = (image->format & PNG_FORMAT_FLAG_ALPHA) != 0; unsigned int outchannels = 1U+preserve_alpha; @@ -3456,8 +3538,8 @@ png_image_read_background(png_voidp argument) for (pass = 0; pass < passes; ++pass) { - unsigned int startx, stepx, stepy; - png_uint_32 y; + unsigned int startx, stepx, stepy; + png_uint_32 y; /* The 'x' start and step are adjusted to output components here. */ @@ -3484,7 +3566,7 @@ png_image_read_background(png_voidp argument) for (; yinterlaced != 0) + do_local_scale = 1; + } + change &= ~PNG_FORMAT_FLAG_LINEAR; } @@ -3912,23 +4003,23 @@ png_image_read_direct(png_voidp argument) */ { png_voidp first_row = display->buffer; - ptrdiff_t row_bytes = display->row_stride; + ptrdiff_t row_step = display->row_stride; if (linear != 0) - row_bytes *= 2; + row_step *= 2; - /* The following expression is designed to work correctly whether it gives - * a signed or an unsigned result. + /* The following adjustment is to ensure that calculations are correct, + * regardless whether row_step is positive or negative. */ - if (row_bytes < 0) + if (row_step < 0) { char *ptr = png_voidcast(char*, first_row); - ptr += (image->height-1) * (-row_bytes); + ptr += (image->height - 1) * (-row_step); first_row = png_voidcast(png_voidp, ptr); } display->first_row = first_row; - display->row_bytes = row_bytes; + display->row_step = row_step; } if (do_local_compose != 0) @@ -3957,19 +4048,37 @@ png_image_read_direct(png_voidp argument) return result; } + else if (do_local_scale != 0) + { + /* For interlaced 16-to-8 conversion, use an intermediate row buffer + * to avoid buffer overflows in png_combine_row. The local_row is sized + * for the transformed (8-bit) output, preventing the overflow that would + * occur if png_combine_row wrote 16-bit data directly to the user buffer. + */ + int result; + png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr)); + + display->local_row = row; + result = png_safe_execute(image, png_image_read_direct_scaled, display); + display->local_row = NULL; + png_free(png_ptr, row); + + return result; + } + else { - png_alloc_size_t row_bytes = (png_alloc_size_t)display->row_bytes; + ptrdiff_t row_step = display->row_step; while (--passes >= 0) { - png_uint_32 y = image->height; - png_bytep row = png_voidcast(png_bytep, display->first_row); + png_uint_32 y = image->height; + png_bytep row = png_voidcast(png_bytep, display->first_row); for (; y > 0; --y) { png_read_row(png_ptr, row, NULL); - row += row_bytes; + row += row_step; } } diff --git a/png/pngrtran.c b/png/pngrtran.c index 1809db704..fe8f9d32c 100644 --- a/png/pngrtran.c +++ b/png/pngrtran.c @@ -501,9 +501,19 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette, { int i; + /* Initialize the array to index colors. + * + * Ensure quantize_index can fit 256 elements (PNG_MAX_PALETTE_LENGTH) + * rather than num_palette elements. This is to prevent buffer overflows + * caused by malformed PNG files with out-of-range palette indices. + * + * Be careful to avoid leaking memory. Applications are allowed to call + * this function more than once per png_struct. + */ + png_free(png_ptr, png_ptr->quantize_index); png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr, - (png_alloc_size_t)num_palette); - for (i = 0; i < num_palette; i++) + PNG_MAX_PALETTE_LENGTH); + for (i = 0; i < PNG_MAX_PALETTE_LENGTH; i++) png_ptr->quantize_index[i] = (png_byte)i; } @@ -515,15 +525,14 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette, * Perhaps not the best solution, but good enough. */ - int i; + png_bytep quantize_sort; + int i, j; - /* Initialize an array to sort colors */ - png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr, + /* Initialize the local array to sort colors. */ + quantize_sort = (png_bytep)png_malloc(png_ptr, (png_alloc_size_t)num_palette); - - /* Initialize the quantize_sort array */ for (i = 0; i < num_palette; i++) - png_ptr->quantize_sort[i] = (png_byte)i; + quantize_sort[i] = (png_byte)i; /* Find the least used palette entries by starting a * bubble sort, and running it until we have sorted @@ -535,19 +544,18 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette, for (i = num_palette - 1; i >= maximum_colors; i--) { int done; /* To stop early if the list is pre-sorted */ - int j; done = 1; for (j = 0; j < i; j++) { - if (histogram[png_ptr->quantize_sort[j]] - < histogram[png_ptr->quantize_sort[j + 1]]) + if (histogram[quantize_sort[j]] + < histogram[quantize_sort[j + 1]]) { png_byte t; - t = png_ptr->quantize_sort[j]; - png_ptr->quantize_sort[j] = png_ptr->quantize_sort[j + 1]; - png_ptr->quantize_sort[j + 1] = t; + t = quantize_sort[j]; + quantize_sort[j] = quantize_sort[j + 1]; + quantize_sort[j + 1] = t; done = 0; } } @@ -559,18 +567,18 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette, /* Swap the palette around, and set up a table, if necessary */ if (full_quantize != 0) { - int j = num_palette; + j = num_palette; /* Put all the useful colors within the max, but don't * move the others. */ for (i = 0; i < maximum_colors; i++) { - if ((int)png_ptr->quantize_sort[i] >= maximum_colors) + if ((int)quantize_sort[i] >= maximum_colors) { do j--; - while ((int)png_ptr->quantize_sort[j] >= maximum_colors); + while ((int)quantize_sort[j] >= maximum_colors); palette[i] = palette[j]; } @@ -578,7 +586,7 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette, } else { - int j = num_palette; + j = num_palette; /* Move all the used colors inside the max limit, and * develop a translation table. @@ -586,13 +594,13 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette, for (i = 0; i < maximum_colors; i++) { /* Only move the colors we need to */ - if ((int)png_ptr->quantize_sort[i] >= maximum_colors) + if ((int)quantize_sort[i] >= maximum_colors) { png_color tmp_color; do j--; - while ((int)png_ptr->quantize_sort[j] >= maximum_colors); + while ((int)quantize_sort[j] >= maximum_colors); tmp_color = palette[j]; palette[j] = palette[i]; @@ -630,8 +638,7 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette, } } } - png_free(png_ptr, png_ptr->quantize_sort); - png_ptr->quantize_sort = NULL; + png_free(png_ptr, quantize_sort); } else { @@ -1113,8 +1120,8 @@ png_set_rgb_to_gray(png_structrp png_ptr, int error_action, double red, #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) void PNGAPI -png_set_read_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr - read_user_transform_fn) +png_set_read_user_transform_fn(png_structrp png_ptr, + png_user_transform_ptr read_user_transform_fn) { png_debug(1, "in png_set_read_user_transform_fn"); @@ -1774,19 +1781,51 @@ png_init_read_transformations(png_structrp png_ptr) } else /* if (png_ptr->trans_alpha[i] != 0xff) */ { - png_byte v, w; - - v = png_ptr->gamma_to_1[palette[i].red]; - png_composite(w, v, png_ptr->trans_alpha[i], back_1.red); - palette[i].red = png_ptr->gamma_from_1[w]; - - v = png_ptr->gamma_to_1[palette[i].green]; - png_composite(w, v, png_ptr->trans_alpha[i], back_1.green); - palette[i].green = png_ptr->gamma_from_1[w]; - - v = png_ptr->gamma_to_1[palette[i].blue]; - png_composite(w, v, png_ptr->trans_alpha[i], back_1.blue); - palette[i].blue = png_ptr->gamma_from_1[w]; + if ((png_ptr->flags & PNG_FLAG_OPTIMIZE_ALPHA) != 0) + { + /* Premultiply only: + * component = round((component * alpha) / 255) + */ + png_uint_32 component; + + component = png_ptr->gamma_to_1[palette[i].red]; + component = + (component * png_ptr->trans_alpha[i] + 128) / 255; + palette[i].red = png_ptr->gamma_from_1[component]; + + component = png_ptr->gamma_to_1[palette[i].green]; + component = + (component * png_ptr->trans_alpha[i] + 128) / 255; + palette[i].green = png_ptr->gamma_from_1[component]; + + component = png_ptr->gamma_to_1[palette[i].blue]; + component = + (component * png_ptr->trans_alpha[i] + 128) / 255; + palette[i].blue = png_ptr->gamma_from_1[component]; + } + else + { + /* Composite with background color: + * component = + * alpha * component + (1 - alpha) * background + */ + png_byte v, w; + + v = png_ptr->gamma_to_1[palette[i].red]; + png_composite(w, v, + png_ptr->trans_alpha[i], back_1.red); + palette[i].red = png_ptr->gamma_from_1[w]; + + v = png_ptr->gamma_to_1[palette[i].green]; + png_composite(w, v, + png_ptr->trans_alpha[i], back_1.green); + palette[i].green = png_ptr->gamma_from_1[w]; + + v = png_ptr->gamma_to_1[palette[i].blue]; + png_composite(w, v, + png_ptr->trans_alpha[i], back_1.blue); + palette[i].blue = png_ptr->gamma_from_1[w]; + } } } else @@ -1804,6 +1843,7 @@ png_init_read_transformations(png_structrp png_ptr) * transformations elsewhere. */ png_ptr->transformations &= ~(PNG_COMPOSE | PNG_GAMMA); + png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; } /* color_type == PNG_COLOR_TYPE_PALETTE */ /* if (png_ptr->background_gamma_type!=PNG_BACKGROUND_GAMMA_UNKNOWN) */ @@ -5009,13 +5049,8 @@ png_do_read_transformations(png_structrp png_ptr, png_row_infop row_info) #ifdef PNG_READ_QUANTIZE_SUPPORTED if ((png_ptr->transformations & PNG_QUANTIZE) != 0) - { png_do_quantize(row_info, png_ptr->row_buf + 1, png_ptr->palette_lookup, png_ptr->quantize_index); - - if (row_info->rowbytes == 0) - png_error(png_ptr, "png_do_quantize returned rowbytes=0"); - } #endif /* READ_QUANTIZE */ #ifdef PNG_READ_EXPAND_16_SUPPORTED diff --git a/png/pngrutil.c b/png/pngrutil.c index e7c7bbe48..a4eda54c8 100644 --- a/png/pngrutil.c +++ b/png/pngrutil.c @@ -2386,7 +2386,7 @@ png_handle_tIME(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) static png_handle_result_code /* PRIVATE */ png_handle_tEXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) { - png_text text_info; + png_text text_info; png_bytep buffer; png_charp key; png_charp text; @@ -2459,8 +2459,8 @@ static png_handle_result_code /* PRIVATE */ png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) { png_const_charp errmsg = NULL; - png_bytep buffer; - png_uint_32 keyword_length; + png_bytep buffer; + png_uint_32 keyword_length; png_debug(1, "in png_handle_zTXt"); diff --git a/png/pngstruct.h b/png/pngstruct.h index 084422bc1..fe5fa0415 100644 --- a/png/pngstruct.h +++ b/png/pngstruct.h @@ -405,7 +405,6 @@ struct png_struct_def #ifdef PNG_READ_QUANTIZE_SUPPORTED /* The following three members were added at version 1.0.14 and 1.2.4 */ - png_bytep quantize_sort; /* working sort array */ png_bytep index_to_palette; /* where the original index currently is in the palette */ png_bytep palette_to_index; /* which original index points to this diff --git a/png/pngtrans.c b/png/pngtrans.c index 222b4987f..19f5c641b 100644 --- a/png/pngtrans.c +++ b/png/pngtrans.c @@ -802,8 +802,8 @@ png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info) defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) #ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED void PNGAPI -png_set_user_transform_info(png_structrp png_ptr, png_voidp - user_transform_ptr, int user_transform_depth, int user_transform_channels) +png_set_user_transform_info(png_structrp png_ptr, png_voidp user_transform_ptr, + int user_transform_depth, int user_transform_channels) { png_debug(1, "in png_set_user_transform_info"); diff --git a/png/pngwrite.c b/png/pngwrite.c index 35a5d17b6..362a8c3e1 100644 --- a/png/pngwrite.c +++ b/png/pngwrite.c @@ -1,6 +1,6 @@ /* pngwrite.c - general routines to write a PNG file * - * Copyright (c) 2018-2025 Cosmin Truta + * Copyright (c) 2018-2026 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. @@ -542,7 +542,8 @@ png_convert_from_time_t(png_timep ptime, time_t ttime) /* Initialize png_ptr structure, and allocate any memory needed */ PNG_FUNCTION(png_structp,PNGAPI png_create_write_struct,(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED) + png_error_ptr error_fn, png_error_ptr warn_fn), + PNG_ALLOCATED) { #ifndef PNG_USER_MEM_SUPPORTED png_structrp png_ptr = png_create_png_struct(user_png_ver, error_ptr, @@ -556,7 +557,8 @@ png_create_write_struct,(png_const_charp user_png_ver, png_voidp error_ptr, PNG_FUNCTION(png_structp,PNGAPI png_create_write_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, - png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED) + png_malloc_ptr malloc_fn, png_free_ptr free_fn), + PNG_ALLOCATED) { png_structrp png_ptr = png_create_png_struct(user_png_ver, error_ptr, error_fn, warn_fn, mem_ptr, malloc_fn, free_fn); @@ -1376,8 +1378,8 @@ png_set_write_status_fn(png_structrp png_ptr, png_write_status_ptr write_row_fn) #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED void PNGAPI -png_set_write_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr - write_user_transform_fn) +png_set_write_user_transform_fn(png_structrp png_ptr, + png_user_transform_ptr write_user_transform_fn) { png_debug(1, "in png_set_write_user_transform_fn"); @@ -1393,7 +1395,7 @@ png_set_write_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr #ifdef PNG_INFO_IMAGE_SUPPORTED void PNGAPI png_write_png(png_structrp png_ptr, png_inforp info_ptr, - int transforms, voidp params) + int transforms, png_voidp params) { png_debug(1, "in png_write_png"); @@ -1558,18 +1560,20 @@ png_image_write_init(png_imagep image) /* Arguments to png_image_write_main: */ typedef struct { - /* Arguments: */ - png_imagep image; + /* Arguments */ + png_imagep image; png_const_voidp buffer; - png_int_32 row_stride; + png_int_32 row_stride; png_const_voidp colormap; - int convert_to_8bit; - /* Local variables: */ + int convert_to_8bit; + + /* Instance variables */ png_const_voidp first_row; - ptrdiff_t row_bytes; - png_voidp local_row; + png_voidp local_row; + ptrdiff_t row_step; + /* Byte count for memory writing */ - png_bytep memory; + png_bytep memory; png_alloc_size_t memory_bytes; /* not used for STDIO */ png_alloc_size_t output_bytes; /* running total */ } png_image_write_control; @@ -1676,7 +1680,7 @@ png_write_image_16bit(png_voidp argument) } png_write_row(png_ptr, png_voidcast(png_const_bytep, display->local_row)); - input_row += (png_uint_16)display->row_bytes/(sizeof (png_uint_16)); + input_row += display->row_step / 2; } return 1; @@ -1802,7 +1806,7 @@ png_write_image_8bit(png_voidp argument) png_write_row(png_ptr, png_voidcast(png_const_bytep, display->local_row)); - input_row += (png_uint_16)display->row_bytes/(sizeof (png_uint_16)); + input_row += display->row_step / 2; } /* while y */ } @@ -1827,7 +1831,7 @@ png_write_image_8bit(png_voidp argument) } png_write_row(png_ptr, output_row); - input_row += (png_uint_16)display->row_bytes/(sizeof (png_uint_16)); + input_row += display->row_step / 2; } } @@ -2143,16 +2147,16 @@ png_image_write_main(png_voidp argument) { png_const_bytep row = png_voidcast(png_const_bytep, display->buffer); - ptrdiff_t row_bytes = display->row_stride; + ptrdiff_t row_step = display->row_stride; if (linear != 0) - row_bytes *= (sizeof (png_uint_16)); + row_step *= 2; - if (row_bytes < 0) - row += (image->height-1) * (-row_bytes); + if (row_step < 0) + row += (image->height-1) * (-row_step); display->first_row = row; - display->row_bytes = row_bytes; + display->row_step = row_step; } /* Apply 'fast' options if the flag is set. */ @@ -2173,8 +2177,7 @@ png_image_write_main(png_voidp argument) * before it is written. This only applies when the input is 16-bit and * either there is an alpha channel or it is converted to 8-bit. */ - if ((linear != 0 && alpha != 0 ) || - (colormap == 0 && display->convert_to_8bit != 0)) + if (linear != 0 && (alpha != 0 || display->convert_to_8bit != 0)) { png_bytep row = png_voidcast(png_bytep, png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr))); @@ -2200,13 +2203,13 @@ png_image_write_main(png_voidp argument) else { png_const_bytep row = png_voidcast(png_const_bytep, display->first_row); - ptrdiff_t row_bytes = display->row_bytes; + ptrdiff_t row_step = display->row_step; png_uint_32 y = image->height; for (; y > 0; --y) { png_write_row(png_ptr, row); - row += row_bytes; + row += row_step; } } diff --git a/png/pngwutil.c b/png/pngwutil.c index 863ffe8c2..b4b845a7b 100644 --- a/png/pngwutil.c +++ b/png/pngwutil.c @@ -485,10 +485,10 @@ png_free_buffer_list(png_structrp png_ptr, png_compression_bufferp *listp) */ typedef struct { - png_const_bytep input; /* The uncompressed input data */ - png_alloc_size_t input_len; /* Its length */ - png_uint_32 output_len; /* Final compressed length */ - png_byte output[1024]; /* First block of output */ + png_const_bytep input; /* The uncompressed input data */ + png_alloc_size_t input_len; /* Its length */ + png_uint_32 output_len; /* Final compressed length */ + png_byte output[1024]; /* First block of output */ } compression_state; static void -- cgit v1.2.3