libpng: Update to upstream 1.6.26
This commit is contained in:
Rémi Verschelde
270
thirdparty/libpng/pngpriv.h
vendored
270
thirdparty/libpng/pngpriv.h
vendored
@ -1,7 +1,7 @@
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/* pngpriv.h - private declarations for use inside libpng
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*
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* Last changed in libpng 1.6.22 [May 26, 2016]
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* Last changed in libpng 1.6.26 [October 20, 2016]
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* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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@ -182,6 +182,35 @@
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# endif
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#endif /* PNG_ARM_NEON_OPT > 0 */
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#ifndef PNG_MIPS_MSA_OPT
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# if defined(__mips_msa) && (__mips_isa_rev >= 5) && defined(PNG_ALIGNED_MEMORY_SUPPORTED)
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# define PNG_MIPS_MSA_OPT 2
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# else
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# define PNG_MIPS_MSA_OPT 0
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# endif
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#endif
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#if PNG_MIPS_MSA_OPT > 0
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# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_msa
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# ifndef PNG_MIPS_MSA_IMPLEMENTATION
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# if defined(__mips_msa)
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# if defined(__clang__)
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# elif defined(__GNUC__)
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# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7)
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# define PNG_MIPS_MSA_IMPLEMENTATION 2
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# endif /* no GNUC support */
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# endif /* __GNUC__ */
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# else /* !defined __mips_msa */
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# define PNG_MIPS_MSA_IMPLEMENTATION 2
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# endif /* __mips_msa */
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# endif /* !PNG_MIPS_MSA_IMPLEMENTATION */
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# ifndef PNG_MIPS_MSA_IMPLEMENTATION
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# define PNG_MIPS_MSA_IMPLEMENTATION 1
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# endif
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#endif /* PNG_MIPS_MSA_OPT > 0 */
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/* Is this a build of a DLL where compilation of the object modules requires
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* different preprocessor settings to those required for a simple library? If
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* so PNG_BUILD_DLL must be set.
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@ -420,10 +449,10 @@
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# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
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defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
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/* We need to check that <math.h> hasn't already been included earlier
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* as it seems it doesn't agree with <fp.h>, yet we should really use
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* <fp.h> if possible.
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*/
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/* We need to check that <math.h> hasn't already been included earlier
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* as it seems it doesn't agree with <fp.h>, yet we should really use
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* <fp.h> if possible.
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*/
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# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
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# include <fp.h>
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# endif
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@ -431,9 +460,9 @@
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# include <math.h>
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# endif
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# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
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/* Amiga SAS/C: We must include builtin FPU functions when compiling using
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* MATH=68881
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*/
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/* Amiga SAS/C: We must include builtin FPU functions when compiling using
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* MATH=68881
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*/
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# include <m68881.h>
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# endif
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#endif
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@ -504,7 +533,8 @@
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/* This implicitly assumes alignment is always to a power of 2. */
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#ifdef png_alignof
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# define png_isaligned(ptr, type)\
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((((const char*)ptr-(const char*)0) & (png_alignof(type)-1)) == 0)
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(((type)((const char*)ptr-(const char*)0) & \
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(type)(png_alignof(type)-1)) == 0)
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#else
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# define png_isaligned(ptr, type) 0
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#endif
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@ -521,92 +551,92 @@
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* are defined in png.h because they need to be visible to applications
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* that call png_set_unknown_chunk().
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*/
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/* #define PNG_HAVE_IHDR 0x01 (defined in png.h) */
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/* #define PNG_HAVE_PLTE 0x02 (defined in png.h) */
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#define PNG_HAVE_IDAT 0x04
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/* #define PNG_AFTER_IDAT 0x08 (defined in png.h) */
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#define PNG_HAVE_IEND 0x10
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/* 0x20 (unused) */
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/* 0x40 (unused) */
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/* 0x80 (unused) */
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#define PNG_HAVE_CHUNK_HEADER 0x100
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#define PNG_WROTE_tIME 0x200
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#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
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#define PNG_BACKGROUND_IS_GRAY 0x800
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#define PNG_HAVE_PNG_SIGNATURE 0x1000
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#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
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/* 0x4000 (unused) */
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#define PNG_IS_READ_STRUCT 0x8000 /* Else is a write struct */
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/* #define PNG_HAVE_IHDR 0x01U (defined in png.h) */
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/* #define PNG_HAVE_PLTE 0x02U (defined in png.h) */
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#define PNG_HAVE_IDAT 0x04U
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/* #define PNG_AFTER_IDAT 0x08U (defined in png.h) */
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#define PNG_HAVE_IEND 0x10U
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/* 0x20U (unused) */
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/* 0x40U (unused) */
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/* 0x80U (unused) */
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#define PNG_HAVE_CHUNK_HEADER 0x100U
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#define PNG_WROTE_tIME 0x200U
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#define PNG_WROTE_INFO_BEFORE_PLTE 0x400U
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#define PNG_BACKGROUND_IS_GRAY 0x800U
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#define PNG_HAVE_PNG_SIGNATURE 0x1000U
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#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000U /* Have another chunk after IDAT */
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/* 0x4000U (unused) */
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#define PNG_IS_READ_STRUCT 0x8000U /* Else is a write struct */
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/* Flags for the transformations the PNG library does on the image data */
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#define PNG_BGR 0x0001
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#define PNG_INTERLACE 0x0002
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#define PNG_PACK 0x0004
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#define PNG_SHIFT 0x0008
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#define PNG_SWAP_BYTES 0x0010
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#define PNG_INVERT_MONO 0x0020
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#define PNG_QUANTIZE 0x0040
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#define PNG_COMPOSE 0x0080 /* Was PNG_BACKGROUND */
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#define PNG_BACKGROUND_EXPAND 0x0100
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#define PNG_EXPAND_16 0x0200 /* Added to libpng 1.5.2 */
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#define PNG_16_TO_8 0x0400 /* Becomes 'chop' in 1.5.4 */
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#define PNG_RGBA 0x0800
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#define PNG_EXPAND 0x1000
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#define PNG_GAMMA 0x2000
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#define PNG_GRAY_TO_RGB 0x4000
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#define PNG_FILLER 0x8000
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#define PNG_PACKSWAP 0x10000
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#define PNG_SWAP_ALPHA 0x20000
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#define PNG_STRIP_ALPHA 0x40000
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#define PNG_INVERT_ALPHA 0x80000
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#define PNG_USER_TRANSFORM 0x100000
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#define PNG_RGB_TO_GRAY_ERR 0x200000
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#define PNG_RGB_TO_GRAY_WARN 0x400000
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#define PNG_RGB_TO_GRAY 0x600000 /* two bits, RGB_TO_GRAY_ERR|WARN */
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#define PNG_ENCODE_ALPHA 0x800000 /* Added to libpng-1.5.4 */
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#define PNG_ADD_ALPHA 0x1000000 /* Added to libpng-1.2.7 */
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#define PNG_EXPAND_tRNS 0x2000000 /* Added to libpng-1.2.9 */
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#define PNG_SCALE_16_TO_8 0x4000000 /* Added to libpng-1.5.4 */
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/* 0x8000000 unused */
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/* 0x10000000 unused */
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/* 0x20000000 unused */
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/* 0x40000000 unused */
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#define PNG_BGR 0x0001U
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#define PNG_INTERLACE 0x0002U
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#define PNG_PACK 0x0004U
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#define PNG_SHIFT 0x0008U
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#define PNG_SWAP_BYTES 0x0010U
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#define PNG_INVERT_MONO 0x0020U
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#define PNG_QUANTIZE 0x0040U
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#define PNG_COMPOSE 0x0080U /* Was PNG_BACKGROUND */
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#define PNG_BACKGROUND_EXPAND 0x0100U
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#define PNG_EXPAND_16 0x0200U /* Added to libpng 1.5.2 */
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#define PNG_16_TO_8 0x0400U /* Becomes 'chop' in 1.5.4 */
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#define PNG_RGBA 0x0800U
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#define PNG_EXPAND 0x1000U
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#define PNG_GAMMA 0x2000U
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#define PNG_GRAY_TO_RGB 0x4000U
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#define PNG_FILLER 0x8000U
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#define PNG_PACKSWAP 0x10000U
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#define PNG_SWAP_ALPHA 0x20000U
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#define PNG_STRIP_ALPHA 0x40000U
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#define PNG_INVERT_ALPHA 0x80000U
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#define PNG_USER_TRANSFORM 0x100000U
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#define PNG_RGB_TO_GRAY_ERR 0x200000U
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#define PNG_RGB_TO_GRAY_WARN 0x400000U
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#define PNG_RGB_TO_GRAY 0x600000U /* two bits, RGB_TO_GRAY_ERR|WARN */
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#define PNG_ENCODE_ALPHA 0x800000U /* Added to libpng-1.5.4 */
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#define PNG_ADD_ALPHA 0x1000000U /* Added to libpng-1.2.7 */
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#define PNG_EXPAND_tRNS 0x2000000U /* Added to libpng-1.2.9 */
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#define PNG_SCALE_16_TO_8 0x4000000U /* Added to libpng-1.5.4 */
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/* 0x8000000U unused */
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/* 0x10000000U unused */
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/* 0x20000000U unused */
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/* 0x40000000U unused */
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/* Flags for png_create_struct */
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#define PNG_STRUCT_PNG 0x0001
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#define PNG_STRUCT_INFO 0x0002
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#define PNG_STRUCT_PNG 0x0001U
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#define PNG_STRUCT_INFO 0x0002U
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/* Flags for the png_ptr->flags rather than declaring a byte for each one */
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#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001
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#define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002 /* Added to libpng-1.6.0 */
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/* 0x0004 unused */
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#define PNG_FLAG_ZSTREAM_ENDED 0x0008 /* Added to libpng-1.6.0 */
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/* 0x0010 unused */
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/* 0x0020 unused */
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#define PNG_FLAG_ROW_INIT 0x0040
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#define PNG_FLAG_FILLER_AFTER 0x0080
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#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100
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#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200
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#define PNG_FLAG_CRC_CRITICAL_USE 0x0400
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#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800
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#define PNG_FLAG_ASSUME_sRGB 0x1000 /* Added to libpng-1.5.4 */
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#define PNG_FLAG_OPTIMIZE_ALPHA 0x2000 /* Added to libpng-1.5.4 */
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#define PNG_FLAG_DETECT_UNINITIALIZED 0x4000 /* Added to libpng-1.5.4 */
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/* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000 */
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/* #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000 */
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#define PNG_FLAG_LIBRARY_MISMATCH 0x20000
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#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000
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#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000
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#define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000 /* Added to libpng-1.4.0 */
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#define PNG_FLAG_APP_WARNINGS_WARN 0x200000 /* Added to libpng-1.6.0 */
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#define PNG_FLAG_APP_ERRORS_WARN 0x400000 /* Added to libpng-1.6.0 */
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/* 0x800000 unused */
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/* 0x1000000 unused */
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/* 0x2000000 unused */
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/* 0x4000000 unused */
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/* 0x8000000 unused */
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/* 0x10000000 unused */
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/* 0x20000000 unused */
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/* 0x40000000 unused */
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#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001U
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#define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002U /* Added to libpng-1.6.0 */
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/* 0x0004U unused */
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#define PNG_FLAG_ZSTREAM_ENDED 0x0008U /* Added to libpng-1.6.0 */
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/* 0x0010U unused */
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/* 0x0020U unused */
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#define PNG_FLAG_ROW_INIT 0x0040U
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#define PNG_FLAG_FILLER_AFTER 0x0080U
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#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100U
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#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200U
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#define PNG_FLAG_CRC_CRITICAL_USE 0x0400U
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#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800U
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#define PNG_FLAG_ASSUME_sRGB 0x1000U /* Added to libpng-1.5.4 */
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#define PNG_FLAG_OPTIMIZE_ALPHA 0x2000U /* Added to libpng-1.5.4 */
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#define PNG_FLAG_DETECT_UNINITIALIZED 0x4000U /* Added to libpng-1.5.4 */
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/* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000U */
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/* #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000U */
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#define PNG_FLAG_LIBRARY_MISMATCH 0x20000U
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#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000U
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#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000U
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#define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000U /* Added to libpng-1.4.0 */
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#define PNG_FLAG_APP_WARNINGS_WARN 0x200000U /* Added to libpng-1.6.0 */
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#define PNG_FLAG_APP_ERRORS_WARN 0x400000U /* Added to libpng-1.6.0 */
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/* 0x800000U unused */
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/* 0x1000000U unused */
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/* 0x2000000U unused */
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/* 0x4000000U unused */
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/* 0x8000000U unused */
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/* 0x10000000U unused */
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/* 0x20000000U unused */
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/* 0x40000000U unused */
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#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
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PNG_FLAG_CRC_ANCILLARY_NOWARN)
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@ -640,6 +670,24 @@
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((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \
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(( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) )
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/* This returns the number of trailing bits in the last byte of a row, 0 if the
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* last byte is completely full of pixels. It is, in principle, (pixel_bits x
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* width) % 8, but that would overflow for large 'width'. The second macro is
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* the same except that it returns the number of unused bits in the last byte;
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* (8-TRAILBITS), but 0 when TRAILBITS is 0.
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*
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* NOTE: these macros are intended to be self-evidently correct and never
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* overflow on the assumption that pixel_bits is in the range 0..255. The
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* arguments are evaluated only once and they can be signed (e.g. as a result of
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* the integral promotions). The result of the expression always has type
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* (png_uint_32), however the compiler always knows it is in the range 0..7.
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*/
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#define PNG_TRAILBITS(pixel_bits, width) \
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(((pixel_bits) * ((width) % (png_uint_32)8)) % 8)
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#define PNG_PADBITS(pixel_bits, width) \
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((8 - PNG_TRAILBITS(pixel_bits, width)) % 8)
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/* PNG_OUT_OF_RANGE returns true if value is outside the range
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* ideal-delta..ideal+delta. Each argument is evaluated twice.
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* "ideal" and "delta" should be constants, normally simple
|
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@ -1025,7 +1073,7 @@ PNG_INTERNAL_FUNCTION(void,png_write_sBIT,(png_structrp png_ptr,
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#ifdef PNG_WRITE_cHRM_SUPPORTED
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PNG_INTERNAL_FUNCTION(void,png_write_cHRM_fixed,(png_structrp png_ptr,
|
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const png_xy *xy), PNG_EMPTY);
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/* The xy value must have been previously validated */
|
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/* The xy value must have been previously validated */
|
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#endif
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#ifdef PNG_WRITE_sRGB_SUPPORTED
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@ -1174,6 +1222,7 @@ PNG_INTERNAL_FUNCTION(void,png_do_write_interlace,(png_row_infop row_info,
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PNG_INTERNAL_FUNCTION(void,png_read_filter_row,(png_structrp pp, png_row_infop
|
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row_info, png_bytep row, png_const_bytep prev_row, int filter),PNG_EMPTY);
|
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#if PNG_ARM_NEON_OPT > 0
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PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_neon,(png_row_infop row_info,
|
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png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
|
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PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_neon,(png_row_infop
|
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@ -1188,6 +1237,24 @@ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_neon,(png_row_infop
|
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row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
|
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PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop
|
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row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
|
||||
#endif
|
||||
|
||||
#if PNG_MIPS_MSA_OPT > 0
|
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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);
|
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PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_msa,(png_row_infop
|
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row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
|
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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);
|
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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
|
||||
|
||||
/* Choose the best filter to use and filter the row data */
|
||||
PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr,
|
||||
@ -1215,7 +1282,7 @@ PNG_INTERNAL_FUNCTION(void,png_read_finish_row,(png_structrp png_ptr),
|
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/* Initialize the row buffers, etc. */
|
||||
PNG_INTERNAL_FUNCTION(void,png_read_start_row,(png_structrp png_ptr),PNG_EMPTY);
|
||||
|
||||
#if PNG_ZLIB_VERNUM >= 0x1240
|
||||
#if ZLIB_VERNUM >= 0x1240
|
||||
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)
|
||||
@ -1413,7 +1480,7 @@ PNG_INTERNAL_FUNCTION(void,png_push_have_info,(png_structrp png_ptr,
|
||||
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_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,
|
||||
@ -1452,13 +1519,13 @@ PNG_INTERNAL_FUNCTION(void,png_colorspace_set_gamma,(png_const_structrp png_ptr,
|
||||
|
||||
PNG_INTERNAL_FUNCTION(void,png_colorspace_sync_info,(png_const_structrp png_ptr,
|
||||
png_inforp info_ptr), PNG_EMPTY);
|
||||
/* Synchronize the info 'valid' flags with the colorspace */
|
||||
/* Synchronize the info 'valid' flags with the colorspace */
|
||||
|
||||
PNG_INTERNAL_FUNCTION(void,png_colorspace_sync,(png_const_structrp png_ptr,
|
||||
png_inforp info_ptr), PNG_EMPTY);
|
||||
/* Copy the png_struct colorspace to the info_struct and call the above to
|
||||
* synchronize the flags. Checks for NULL info_ptr and does nothing.
|
||||
*/
|
||||
/* Copy the png_struct colorspace to the info_struct and call the above to
|
||||
* synchronize the flags. Checks for NULL info_ptr and does nothing.
|
||||
*/
|
||||
#endif
|
||||
|
||||
/* Added at libpng version 1.4.0 */
|
||||
@ -1492,9 +1559,11 @@ PNG_INTERNAL_FUNCTION(int,png_colorspace_set_ICC,(png_const_structrp png_ptr,
|
||||
/* The 'name' is used for information only */
|
||||
|
||||
/* 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_colorspacerp colorspace, 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_colorspacerp colorspace, png_const_charp name,
|
||||
png_uint_32 profile_length,
|
||||
@ -1913,10 +1982,17 @@ PNG_INTERNAL_FUNCTION(void, PNG_FILTER_OPTIMIZATIONS, (png_structp png_ptr,
|
||||
* the builder of libpng passes the definition of PNG_FILTER_OPTIMIZATIONS in
|
||||
* CFLAGS in place of CPPFLAGS *and* uses symbol prefixing.
|
||||
*/
|
||||
# if PNG_ARM_NEON_OPT > 0
|
||||
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon,
|
||||
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
|
||||
#endif
|
||||
|
||||
#if PNG_MIPS_MSA_OPT > 0
|
||||
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_msa,
|
||||
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
PNG_INTERNAL_FUNCTION(png_uint_32, png_check_keyword, (png_structrp png_ptr,
|
||||
png_const_charp key, png_bytep new_key), PNG_EMPTY);
|
||||
|
||||
|
||||
Reference in New Issue
Block a user