#include <stdlib.h>
#include <string.h>
#include "pnglibconf.h"
#include "png.h"
#include "pngstruct.h"
#include "pnginfo.h"
#include "pngdebug.h"

Include dependency graph for pngpriv.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	_POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */

#define	PNGLIB_BUILD /libpng is being built, not used/

#define	PNG_ARM_NEON_OPT 0

#define	PNG_RISCV_RVV_OPT 0

#define	PNG_ARM_NEON_IMPLEMENTATION 0

#define	PNG_MIPS_MSA_OPT 0

#define	PNG_MIPS_MMI_OPT 0

#define	PNG_POWERPC_VSX_OPT 0

#define	PNG_LOONGARCH_LSX_OPT 0

#define	PNG_INTEL_SSE_OPT 0

#define	PNG_INTEL_SSE_IMPLEMENTATION 0

#define	PNG_MIPS_MSA_IMPLEMENTATION 0

#define	PNG_MIPS_MMI_IMPLEMENTATION 0

#define	PNG_POWERPC_VSX_IMPLEMENTATION 0

#define	PNG_LOONGARCH_LSX_IMPLEMENTATION 0

#define	PNG_RISCV_RVV_IMPLEMENTATION 0

#define	PNG_IMPEXP

#define	PNG_DEPRECATED

#define	PNG_PRIVATE

#define	PNG_INTERNAL_DATA(type, name, array) PNG_LINKAGE_DATA type name array

#define	PNG_INTERNAL_FUNCTION(type, name, args, attributes) PNG_LINKAGE_FUNCTION PNG_FUNCTION(type, name, args, PNG_EMPTY attributes)

#define	PNG_INTERNAL_CALLBACK(type, name, args, attributes)

#define	PNG_FP_EXPORT(ordinal, type, name, args) PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY);

#define	PNG_FIXED_EXPORT(ordinal, type, name, args) PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY);

#define	PNG_DLL_EXPORT

#define	PNG_RELEASE_BUILD (PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC)

#define	PNG_UNUSED(param) (void)param;

#define	png_warning_parameter(p, number, string) ((void)0)

#define	png_warning_parameter_unsigned(p, number, format, value) ((void)0)

#define	png_warning_parameter_signed(p, number, format, value) ((void)0)

#define	png_formatted_warning(pp, p, message) ((void)(pp))

#define	PNG_WARNING_PARAMETERS(p)

#define	png_fixed_error(s1, s2) png_err(s1)

#define	PNGFAPI /* PRIVATE */

#define	png_voidcast(type, value) (value)

#define	png_constcast(type, value) ((type)(void)(const void)(value))

#define	png_aligncast(type, value) ((void*)(value))

#define	png_aligncastconst(type, value) ((const void*)(value))

#define	PNG_ABORT() abort()

#define	PNG_ALIGN_NONE 0 /* do not use data alignment */

#define	PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */

#define	PNG_ALIGN_OFFSET -1 /* prevent the use of this */

#define	PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */

#define	PNG_ALIGN_TYPE PNG_ALIGN_SIZE

#define	png_alignof(type) (sizeof(type))

#define	png_isaligned(ptr, type) (((type)(size_t)((const void*)(ptr)) & (type)(png_alignof(type)-1)) == 0)

#define	PNG_HAVE_IDAT 0x04U

#define	PNG_HAVE_IEND 0x10U

#define	PNG_HAVE_CHUNK_HEADER 0x100U

#define	PNG_WROTE_tIME 0x200U

#define	PNG_WROTE_INFO_BEFORE_PLTE 0x400U

#define	PNG_BACKGROUND_IS_GRAY 0x800U

#define	PNG_HAVE_PNG_SIGNATURE 0x1000U

#define	PNG_HAVE_CHUNK_AFTER_IDAT 0x2000U /* Have another chunk after IDAT */

#define	PNG_WROTE_eXIf 0x4000U

#define	PNG_IS_READ_STRUCT 0x8000U /* Else is a write struct */

#define	PNG_BGR 0x0001U

#define	PNG_INTERLACE 0x0002U

#define	PNG_PACK 0x0004U

#define	PNG_SHIFT 0x0008U

#define	PNG_SWAP_BYTES 0x0010U

#define	PNG_INVERT_MONO 0x0020U

#define	PNG_QUANTIZE 0x0040U

#define	PNG_COMPOSE 0x0080U /* Was PNG_BACKGROUND */

#define	PNG_BACKGROUND_EXPAND 0x0100U

#define	PNG_EXPAND_16 0x0200U /* Added to libpng 1.5.2 */

#define	PNG_16_TO_8 0x0400U /* Becomes 'chop' in 1.5.4 */

#define	PNG_RGBA 0x0800U

#define	PNG_EXPAND 0x1000U

#define	PNG_GAMMA 0x2000U

#define	PNG_GRAY_TO_RGB 0x4000U

#define	PNG_FILLER 0x8000U

#define	PNG_PACKSWAP 0x10000U

#define	PNG_SWAP_ALPHA 0x20000U

#define	PNG_STRIP_ALPHA 0x40000U

#define	PNG_INVERT_ALPHA 0x80000U

#define	PNG_USER_TRANSFORM 0x100000U

#define	PNG_RGB_TO_GRAY_ERR 0x200000U

#define	PNG_RGB_TO_GRAY_WARN 0x400000U

#define	PNG_RGB_TO_GRAY 0x600000U /* two bits, RGB_TO_GRAY_ERR\|WARN */

#define	PNG_ENCODE_ALPHA 0x800000U /* Added to libpng-1.5.4 */

#define	PNG_ADD_ALPHA 0x1000000U /* Added to libpng-1.2.7 */

#define	PNG_EXPAND_tRNS 0x2000000U /* Added to libpng-1.2.9 */

#define	PNG_SCALE_16_TO_8 0x4000000U /* Added to libpng-1.5.4 */

#define	PNG_STRUCT_PNG 0x0001U

#define	PNG_STRUCT_INFO 0x0002U

#define	PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001U

#define	PNG_FLAG_ZSTREAM_INITIALIZED 0x0002U /* Added to libpng-1.6.0 */

#define	PNG_FLAG_ZSTREAM_ENDED 0x0008U /* Added to libpng-1.6.0 */

#define	PNG_FLAG_ROW_INIT 0x0040U

#define	PNG_FLAG_FILLER_AFTER 0x0080U

#define	PNG_FLAG_CRC_ANCILLARY_USE 0x0100U

#define	PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200U

#define	PNG_FLAG_CRC_CRITICAL_USE 0x0400U

#define	PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800U

#define	PNG_FLAG_OPTIMIZE_ALPHA 0x2000U /* Added to libpng-1.5.4 */

#define	PNG_FLAG_DETECT_UNINITIALIZED 0x4000U /* Added to libpng-1.5.4 */

#define	PNG_FLAG_LIBRARY_MISMATCH 0x20000U

#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 */

#define	PNG_FLAG_APP_ERRORS_WARN 0x400000U /* Added to libpng-1.6.0 */

#define	PNG_FLAG_CRC_ANCILLARY_MASK

#define	PNG_FLAG_CRC_CRITICAL_MASK

#define	PNG_FLAG_CRC_MASK

#define	PNG_COLOR_DIST(c1, c2)

#define	PNG_DIV65535(v24) (((v24) + 32895) >> 16)

#define	PNG_DIV257(v16) PNG_DIV65535((png_uint_32)(v16) * 255)

#define	PNG_ROWBYTES(pixel_bits, width)

#define	PNG_TRAILBITS(pixel_bits, width) (((pixel_bits) * ((width) % (png_uint_32)8)) % 8)

#define	PNG_PADBITS(pixel_bits, width) ((8 - PNG_TRAILBITS(pixel_bits, width)) % 8)

#define	PNG_OUT_OF_RANGE(value, ideal, delta) ( (value) < (ideal)-(delta) \|\| (value) > (ideal)+(delta) )

#define	PNG_32b(b, s) (((0xFFFFFFFFU)&(b)) << (s))

#define	PNG_U32(b1, b2, b3, b4) (PNG_32b(b1,24) \| PNG_32b(b2,16) \| PNG_32b(b3,8) \| PNG_32b(b4,0))

#define	PNG_32to8(cn, s) (((cn) >> (s)) & 0xffU)

#define	PNG_CN_VALID_UPPER(b) ((b) >= 65 && (b) <= 90) /* upper-case ASCII */

#define	PNG_CN_VALID_ASCII(b) PNG_CN_VALID_UPPER((b) & ~32U)

#define	PNG_CHUNK_NAME_VALID(cn)

#define	png_IDAT PNG_U32( 73, 68, 65, 84)

#define	png_IEND PNG_U32( 73, 69, 78, 68)

#define	png_IHDR PNG_U32( 73, 72, 68, 82)

#define	png_PLTE PNG_U32( 80, 76, 84, 69)

#define	png_acTL PNG_U32( 97, 99, 84, 76) /* PNGv3: APNG */

#define	png_bKGD PNG_U32( 98, 75, 71, 68)

#define	png_cHRM PNG_U32( 99, 72, 82, 77)

#define	png_cICP PNG_U32( 99, 73, 67, 80) /* PNGv3 */

#define	png_cLLI PNG_U32( 99, 76, 76, 73) /* PNGv3 */

#define	png_eXIf PNG_U32(101, 88, 73, 102) /* registered July 2017 */

#define	png_fcTL PNG_U32(102, 99, 84, 76) /* PNGv3: APNG */

#define	png_fdAT PNG_U32(102, 100, 65, 84) /* PNGv3: APNG */

#define	png_fRAc PNG_U32(102, 82, 65, 99) /* registered, not defined */

#define	png_gAMA PNG_U32(103, 65, 77, 65)

#define	png_gIFg PNG_U32(103, 73, 70, 103)

#define	png_gIFt PNG_U32(103, 73, 70, 116) /* deprecated */

#define	png_gIFx PNG_U32(103, 73, 70, 120)

#define	png_hIST PNG_U32(104, 73, 83, 84)

#define	png_iCCP PNG_U32(105, 67, 67, 80)

#define	png_iTXt PNG_U32(105, 84, 88, 116)

#define	png_mDCV PNG_U32(109, 68, 67, 86) /* PNGv3 */

#define	png_oFFs PNG_U32(111, 70, 70, 115)

#define	png_pCAL PNG_U32(112, 67, 65, 76)

#define	png_pHYs PNG_U32(112, 72, 89, 115)

#define	png_sBIT PNG_U32(115, 66, 73, 84)

#define	png_sCAL PNG_U32(115, 67, 65, 76)

#define	png_sPLT PNG_U32(115, 80, 76, 84)

#define	png_sRGB PNG_U32(115, 82, 71, 66)

#define	png_sTER PNG_U32(115, 84, 69, 82)

#define	png_tEXt PNG_U32(116, 69, 88, 116)

#define	png_tIME PNG_U32(116, 73, 77, 69)

#define	png_tRNS PNG_U32(116, 82, 78, 83)

#define	png_zTXt PNG_U32(122, 84, 88, 116)

#define	PNG_CHUNK_FROM_STRING(s) PNG_U32(0xff & (s)[0], 0xff & (s)[1], 0xff & (s)[2], 0xff & (s)[3])

#define	PNG_STRING_FROM_CHUNK(s, c)

#define	PNG_CSTRING_FROM_CHUNK(s, c) (void)(PNG_STRING_FROM_CHUNK(s,c), ((char*)(s))[4] = 0)

#define	PNG_CHUNK_ANCILLARY(c) (1 & ((c) >> 29))

#define	PNG_CHUNK_CRITICAL(c) (!PNG_CHUNK_ANCILLARY(c))

#define	PNG_CHUNK_PRIVATE(c) (1 & ((c) >> 21))

#define	PNG_CHUNK_RESERVED(c) (1 & ((c) >> 13))

#define	PNG_CHUNK_SAFE_TO_COPY(c) (1 & ((c) >> 5))

#define	PNG_KNOWN_CHUNKS

#define	PNG_GAMMA_MAC_OLD 151724 /* Assume '1.8' is really 2.2/1.45! */

#define	PNG_GAMMA_MAC_INVERSE 65909

#define	PNG_GAMMA_sRGB_INVERSE 45455

#define	PNG_LIB_GAMMA_MIN 1000

#define	PNG_LIB_GAMMA_MAX 10000000

#define	PNG_UNEXPECTED_ZLIB_RETURN (-7)

#define	PNG_USE_COMPILE_TIME_MASKS 1

#define	PNG_INFLATE(pp, flush) inflate(&(pp)->zstream, flush)

#define	png_app_warning(pp, s) png_warning(pp,s)

#define	png_app_error(pp, s) png_error(pp,s)

#define	PNG_CHUNK_WARNING 0 /* never an error */

#define	PNG_CHUNK_WRITE_ERROR 1 /* an error only on write */

#define	PNG_CHUNK_ERROR 2 /* always an error */

Typedefs
typedef struct png_incomplete	png_double

typedef png_double *	png_doublep

typedef const png_double *	png_const_doublep

typedef png_double **	png_doublepp

typedef const png_uint_16p *	png_const_uint_16pp

Enumerations
enum	png_handle_result_code { handled_error = 0 , handled_discarded , handled_saved , handled_ok }

Functions
	PNG_INTERNAL_FUNCTION (void, png_zstream_error,(png_structrp png_ptr, int ret), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (int, png_user_version_check,(png_structrp png_ptr, png_const_charp user_png_ver), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (png_voidp, png_malloc_base,(png_const_structrp png_ptr, png_alloc_size_t size), 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)

	PNG_INTERNAL_FUNCTION (void, png_destroy_png_struct,(png_structrp png_ptr), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (void, png_free_jmpbuf,(png_structrp png_ptr), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (voidpf, png_zalloc,(voidpf png_ptr, uInt items, uInt size), PNG_ALLOCATED)

	PNG_INTERNAL_FUNCTION (void, png_zfree,(voidpf png_ptr, voidpf ptr), PNG_EMPTY)

	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_write_data,(png_structp png_ptr, png_bytep data, size_t length), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (void, png_reset_crc,(png_structrp png_ptr), PNG_EMPTY)

	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_read_sig,(png_structrp png_ptr, png_inforp info_ptr), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (png_uint_32, png_read_chunk_header,(png_structrp png_ptr), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (void, png_read_data,(png_structrp png_ptr, png_bytep data, size_t length), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (void, png_crc_read,(png_structrp png_ptr, png_bytep buf, png_uint_32 length), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (int, png_crc_finish,(png_structrp png_ptr, png_uint_32 skip), PNG_EMPTY)

	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_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_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_finish_row,(png_structrp png_ptr), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (void, png_write_start_row,(png_structrp png_ptr), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (void, png_combine_row,(png_const_structrp png_ptr, png_bytep row, int display), 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)

	PNG_INTERNAL_FUNCTION (void, png_write_find_filter,(png_structrp png_ptr, png_row_infop row_info), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (void, png_read_start_row,(png_structrp png_ptr), 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)

	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 (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 (size_t, png_safecat,(png_charp buffer, size_t bufsize, size_t pos, png_const_charp string), PNG_EMPTY)

	PNG_INTERNAL_FUNCTION (void, png_chunk_report,(png_const_structrp png_ptr, png_const_charp message, int error), 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)

Macro Definition Documentation

◆ _POSIX_SOURCE

#define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */

Definition at line 50 of file pngpriv.h.

◆ PNG_16_TO_8

#define PNG_16_TO_8 0x0400U /* Becomes 'chop' in 1.5.4 */

Definition at line 668 of file pngpriv.h.

◆ PNG_32b

#define PNG_32b	(	b,
		s
	)	(((0xFFFFFFFFU)&(b)) << (s))

Definition at line 843 of file pngpriv.h.

◆ PNG_32to8

#define PNG_32to8	(	cn,
		s
	)	(((cn) >> (s)) & 0xffU)

Definition at line 854 of file pngpriv.h.

◆ PNG_ABORT

#define PNG_ABORT ( ) abort()

Definition at line 580 of file pngpriv.h.

◆ png_acTL

#define png_acTL PNG_U32( 97, 99, 84, 76) /* PNGv3: APNG */

Definition at line 890 of file pngpriv.h.

◆ PNG_ADD_ALPHA

#define PNG_ADD_ALPHA 0x1000000U /* Added to libpng-1.2.7 */

Definition at line 683 of file pngpriv.h.

◆ PNG_ALIGN_ALWAYS

#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */

Definition at line 585 of file pngpriv.h.

◆ PNG_ALIGN_NONE

#define PNG_ALIGN_NONE 0 /* do not use data alignment */

Definition at line 584 of file pngpriv.h.

◆ PNG_ALIGN_OFFSET

#define PNG_ALIGN_OFFSET -1 /* prevent the use of this */

Definition at line 589 of file pngpriv.h.

◆ PNG_ALIGN_SIZE

#define PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */

Definition at line 591 of file pngpriv.h.

◆ PNG_ALIGN_TYPE

#define PNG_ALIGN_TYPE PNG_ALIGN_SIZE

Definition at line 598 of file pngpriv.h.

◆ png_aligncast

#define png_aligncast	(	type,
		value
	)	((void*)(value))

Definition at line 537 of file pngpriv.h.

◆ png_aligncastconst

#define png_aligncastconst	(	type,
		value
	)	((const void*)(value))

Definition at line 538 of file pngpriv.h.

◆ png_alignof

#define png_alignof ( type ) (sizeof(type))

Definition at line 608 of file pngpriv.h.

◆ png_app_error

#define png_app_error	(	pp,
		s
	)	png_error(pp,s)

Definition at line 2038 of file pngpriv.h.

◆ png_app_warning

#define png_app_warning	(	pp,
		s
	)	png_warning(pp,s)

Definition at line 2037 of file pngpriv.h.

◆ PNG_ARM_NEON_IMPLEMENTATION

#define PNG_ARM_NEON_IMPLEMENTATION 0

Definition at line 170 of file pngpriv.h.

◆ PNG_ARM_NEON_OPT

#define PNG_ARM_NEON_OPT 0

Definition at line 142 of file pngpriv.h.

◆ PNG_BACKGROUND_EXPAND

#define PNG_BACKGROUND_EXPAND 0x0100U

Definition at line 666 of file pngpriv.h.

◆ PNG_BACKGROUND_IS_GRAY

#define PNG_BACKGROUND_IS_GRAY 0x800U

Definition at line 651 of file pngpriv.h.

◆ PNG_BGR

#define PNG_BGR 0x0001U

Definition at line 658 of file pngpriv.h.

◆ png_bKGD

#define png_bKGD PNG_U32( 98, 75, 71, 68)

Definition at line 891 of file pngpriv.h.

◆ png_cHRM

#define png_cHRM PNG_U32( 99, 72, 82, 77)

Definition at line 892 of file pngpriv.h.

◆ PNG_CHUNK_ANCILLARY

#define PNG_CHUNK_ANCILLARY ( c ) (1 & ((c) >> 29))

Definition at line 941 of file pngpriv.h.

◆ PNG_CHUNK_CRITICAL

#define PNG_CHUNK_CRITICAL ( c ) (!PNG_CHUNK_ANCILLARY(c))

Definition at line 942 of file pngpriv.h.

◆ PNG_CHUNK_ERROR

#define PNG_CHUNK_ERROR 2 /* always an error */

Definition at line 2055 of file pngpriv.h.

◆ PNG_CHUNK_FROM_STRING

#define PNG_CHUNK_FROM_STRING ( s ) PNG_U32(0xff & (s)[0], 0xff & (s)[1], 0xff & (s)[2], 0xff & (s)[3])

Definition at line 923 of file pngpriv.h.

◆ PNG_CHUNK_NAME_VALID

#define PNG_CHUNK_NAME_VALID ( cn )

Value:

   (\
   PNG_CN_VALID_ASCII(PNG_32to8(cn,24)) && /* critical, !ancillary */\
   PNG_CN_VALID_ASCII(PNG_32to8(cn,16)) && /* public, !privately defined */\
   PNG_CN_VALID_UPPER(PNG_32to8(cn, 8)) && /* VALID, !reserved */\
   PNG_CN_VALID_ASCII(PNG_32to8(cn, 0))   /* data-dependent, !copy ok */)

Definition at line 857 of file pngpriv.h.

◆ PNG_CHUNK_PRIVATE

#define PNG_CHUNK_PRIVATE ( c ) (1 & ((c) >> 21))

Definition at line 943 of file pngpriv.h.

◆ PNG_CHUNK_RESERVED

#define PNG_CHUNK_RESERVED ( c ) (1 & ((c) >> 13))

Definition at line 944 of file pngpriv.h.

◆ PNG_CHUNK_SAFE_TO_COPY

#define PNG_CHUNK_SAFE_TO_COPY ( c ) (1 & ((c) >> 5))

Definition at line 945 of file pngpriv.h.

◆ PNG_CHUNK_WARNING

#define PNG_CHUNK_WARNING 0 /* never an error */

Definition at line 2053 of file pngpriv.h.

◆ PNG_CHUNK_WRITE_ERROR

#define PNG_CHUNK_WRITE_ERROR 1 /* an error only on write */

Definition at line 2054 of file pngpriv.h.

◆ png_cICP

#define png_cICP PNG_U32( 99, 73, 67, 80) /* PNGv3 */

Definition at line 893 of file pngpriv.h.

◆ png_cLLI

#define png_cLLI PNG_U32( 99, 76, 76, 73) /* PNGv3 */

Definition at line 894 of file pngpriv.h.

◆ PNG_CN_VALID_ASCII

#define PNG_CN_VALID_ASCII ( b ) PNG_CN_VALID_UPPER((b) & ~32U)

Definition at line 856 of file pngpriv.h.

◆ PNG_CN_VALID_UPPER

#define PNG_CN_VALID_UPPER ( b ) ((b) >= 65 && (b) <= 90) /* upper-case ASCII */

Definition at line 855 of file pngpriv.h.

◆ PNG_COLOR_DIST

#define PNG_COLOR_DIST	(	c1,
		c2
	)

Value:

   (abs((int)((c1).red) - (int)((c2).red)) + \
   abs((int)((c1).green) - (int)((c2).green)) + \
   abs((int)((c1).blue) - (int)((c2).blue)))

Definition at line 738 of file pngpriv.h.

◆ PNG_COMPOSE

#define PNG_COMPOSE 0x0080U /* Was PNG_BACKGROUND */

Definition at line 665 of file pngpriv.h.

◆ png_constcast

#define png_constcast	(	type,
		value
	)	((type)(void)(const void)(value))

Definition at line 536 of file pngpriv.h.

◆ PNG_CSTRING_FROM_CHUNK

#define PNG_CSTRING_FROM_CHUNK	(	s,
		c
	)	(void)(PNG_STRING_FROM_CHUNK(s,c), ((char*)(s))[4] = 0)

Definition at line 937 of file pngpriv.h.

◆ PNG_DEPRECATED

#define PNG_DEPRECATED

Definition at line 373 of file pngpriv.h.

◆ PNG_DIV257

#define PNG_DIV257 ( v16 ) PNG_DIV65535((png_uint_32)(v16) * 255)

Definition at line 751 of file pngpriv.h.

◆ PNG_DIV65535

#define PNG_DIV65535 ( v24 ) (((v24) + 32895) >> 16)

Definition at line 750 of file pngpriv.h.

◆ PNG_DLL_EXPORT

#define PNG_DLL_EXPORT

Definition at line 431 of file pngpriv.h.

◆ PNG_ENCODE_ALPHA

#define PNG_ENCODE_ALPHA 0x800000U /* Added to libpng-1.5.4 */

Definition at line 682 of file pngpriv.h.

◆ png_eXIf

#define png_eXIf PNG_U32(101, 88, 73, 102) /* registered July 2017 */

Definition at line 895 of file pngpriv.h.

◆ PNG_EXPAND

#define PNG_EXPAND 0x1000U

Definition at line 670 of file pngpriv.h.

◆ PNG_EXPAND_16

#define PNG_EXPAND_16 0x0200U /* Added to libpng 1.5.2 */

Definition at line 667 of file pngpriv.h.

◆ PNG_EXPAND_tRNS

#define PNG_EXPAND_tRNS 0x2000000U /* Added to libpng-1.2.9 */

Definition at line 684 of file pngpriv.h.

◆ png_fcTL

#define png_fcTL PNG_U32(102, 99, 84, 76) /* PNGv3: APNG */

Definition at line 896 of file pngpriv.h.

◆ png_fdAT

#define png_fdAT PNG_U32(102, 100, 65, 84) /* PNGv3: APNG */

Definition at line 897 of file pngpriv.h.

◆ PNG_FILLER

#define PNG_FILLER 0x8000U

Definition at line 673 of file pngpriv.h.

◆ png_fixed_error

#define png_fixed_error	(	s1,
		s2
	)	png_err(s1)

Definition at line 504 of file pngpriv.h.

◆ PNG_FIXED_EXPORT

#define PNG_FIXED_EXPORT	(	ordinal,
		type,
		name,
		args
	)	PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY);

Definition at line 422 of file pngpriv.h.

◆ PNG_FLAG_APP_ERRORS_WARN

#define PNG_FLAG_APP_ERRORS_WARN 0x400000U /* Added to libpng-1.6.0 */

Definition at line 717 of file pngpriv.h.

◆ PNG_FLAG_APP_WARNINGS_WARN

#define PNG_FLAG_APP_WARNINGS_WARN 0x200000U /* Added to libpng-1.6.0 */

Definition at line 716 of file pngpriv.h.

◆ PNG_FLAG_BENIGN_ERRORS_WARN

#define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000U /* Added to libpng-1.4.0 */

Definition at line 715 of file pngpriv.h.

◆ PNG_FLAG_CRC_ANCILLARY_MASK

#define PNG_FLAG_CRC_ANCILLARY_MASK

Value:

(PNG_FLAG_CRC_ANCILLARY_USE | \

PNG_FLAG_CRC_ANCILLARY_NOWARN)

PNG_FLAG_CRC_ANCILLARY_USE

#define PNG_FLAG_CRC_ANCILLARY_USE

Definition: pngpriv.h:703

PNG_FLAG_CRC_ANCILLARY_NOWARN

#define PNG_FLAG_CRC_ANCILLARY_NOWARN

Definition: pngpriv.h:704

Definition at line 727 of file pngpriv.h.

◆ PNG_FLAG_CRC_ANCILLARY_NOWARN

#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200U

Definition at line 704 of file pngpriv.h.

◆ PNG_FLAG_CRC_ANCILLARY_USE

#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100U

Definition at line 703 of file pngpriv.h.

◆ PNG_FLAG_CRC_CRITICAL_IGNORE

#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800U

Definition at line 706 of file pngpriv.h.

◆ PNG_FLAG_CRC_CRITICAL_MASK

#define PNG_FLAG_CRC_CRITICAL_MASK

Value:

(PNG_FLAG_CRC_CRITICAL_USE | \

PNG_FLAG_CRC_CRITICAL_IGNORE)

PNG_FLAG_CRC_CRITICAL_USE

#define PNG_FLAG_CRC_CRITICAL_USE

Definition: pngpriv.h:705

PNG_FLAG_CRC_CRITICAL_IGNORE

#define PNG_FLAG_CRC_CRITICAL_IGNORE

Definition: pngpriv.h:706

Definition at line 730 of file pngpriv.h.

◆ PNG_FLAG_CRC_CRITICAL_USE

#define PNG_FLAG_CRC_CRITICAL_USE 0x0400U

Definition at line 705 of file pngpriv.h.

◆ PNG_FLAG_CRC_MASK

#define PNG_FLAG_CRC_MASK

Value:

(PNG_FLAG_CRC_ANCILLARY_MASK | \

PNG_FLAG_CRC_CRITICAL_MASK)

PNG_FLAG_CRC_CRITICAL_MASK

#define PNG_FLAG_CRC_CRITICAL_MASK

Definition: pngpriv.h:730

PNG_FLAG_CRC_ANCILLARY_MASK

#define PNG_FLAG_CRC_ANCILLARY_MASK

Definition: pngpriv.h:727

Definition at line 733 of file pngpriv.h.

◆ PNG_FLAG_DETECT_UNINITIALIZED

#define PNG_FLAG_DETECT_UNINITIALIZED 0x4000U /* Added to libpng-1.5.4 */

Definition at line 709 of file pngpriv.h.

◆ PNG_FLAG_FILLER_AFTER

#define PNG_FLAG_FILLER_AFTER 0x0080U

Definition at line 702 of file pngpriv.h.

◆ PNG_FLAG_LIBRARY_MISMATCH

#define PNG_FLAG_LIBRARY_MISMATCH 0x20000U

Definition at line 712 of file pngpriv.h.

◆ PNG_FLAG_OPTIMIZE_ALPHA

#define PNG_FLAG_OPTIMIZE_ALPHA 0x2000U /* Added to libpng-1.5.4 */

Definition at line 708 of file pngpriv.h.

◆ PNG_FLAG_ROW_INIT

#define PNG_FLAG_ROW_INIT 0x0040U

Definition at line 701 of file pngpriv.h.

◆ PNG_FLAG_STRIP_ERROR_TEXT

#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000U

Definition at line 714 of file pngpriv.h.

◆ PNG_FLAG_ZLIB_CUSTOM_STRATEGY

#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001U

Definition at line 695 of file pngpriv.h.

◆ PNG_FLAG_ZSTREAM_ENDED

#define PNG_FLAG_ZSTREAM_ENDED 0x0008U /* Added to libpng-1.6.0 */

Definition at line 698 of file pngpriv.h.

◆ PNG_FLAG_ZSTREAM_INITIALIZED

#define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002U /* Added to libpng-1.6.0 */

Definition at line 696 of file pngpriv.h.

◆ png_formatted_warning

#define png_formatted_warning	(	pp,
		p,
		message
	)	((void)(pp))

Definition at line 500 of file pngpriv.h.

◆ PNG_FP_EXPORT

#define PNG_FP_EXPORT	(	ordinal,
		type,
		name,
		args
	)	PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY);

Definition at line 410 of file pngpriv.h.

◆ png_fRAc

#define png_fRAc PNG_U32(102, 82, 65, 99) /* registered, not defined */

Definition at line 898 of file pngpriv.h.

◆ png_gAMA

#define png_gAMA PNG_U32(103, 65, 77, 65)

Definition at line 899 of file pngpriv.h.

◆ PNG_GAMMA

#define PNG_GAMMA 0x2000U

Definition at line 671 of file pngpriv.h.

◆ PNG_GAMMA_MAC_INVERSE

#define PNG_GAMMA_MAC_INVERSE 65909

Definition at line 999 of file pngpriv.h.

◆ PNG_GAMMA_MAC_OLD

#define PNG_GAMMA_MAC_OLD 151724 /* Assume '1.8' is really 2.2/1.45! */

Definition at line 998 of file pngpriv.h.

◆ PNG_GAMMA_sRGB_INVERSE

#define PNG_GAMMA_sRGB_INVERSE 45455

Definition at line 1000 of file pngpriv.h.

◆ png_gIFg

#define png_gIFg PNG_U32(103, 73, 70, 103)

Definition at line 900 of file pngpriv.h.

◆ png_gIFt

#define png_gIFt PNG_U32(103, 73, 70, 116) /* deprecated */

Definition at line 901 of file pngpriv.h.

◆ png_gIFx

#define png_gIFx PNG_U32(103, 73, 70, 120)

Definition at line 902 of file pngpriv.h.

◆ PNG_GRAY_TO_RGB

#define PNG_GRAY_TO_RGB 0x4000U

Definition at line 672 of file pngpriv.h.

◆ PNG_HAVE_CHUNK_AFTER_IDAT

#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000U /* Have another chunk after IDAT */

Definition at line 653 of file pngpriv.h.

◆ PNG_HAVE_CHUNK_HEADER

#define PNG_HAVE_CHUNK_HEADER 0x100U

Definition at line 648 of file pngpriv.h.

◆ PNG_HAVE_IDAT

#define PNG_HAVE_IDAT 0x04U

Definition at line 642 of file pngpriv.h.

◆ PNG_HAVE_IEND

#define PNG_HAVE_IEND 0x10U

Definition at line 644 of file pngpriv.h.

◆ PNG_HAVE_PNG_SIGNATURE

#define PNG_HAVE_PNG_SIGNATURE 0x1000U

Definition at line 652 of file pngpriv.h.

◆ png_hIST

#define png_hIST PNG_U32(104, 73, 83, 84)

Definition at line 903 of file pngpriv.h.

◆ png_iCCP

#define png_iCCP PNG_U32(105, 67, 67, 80)

Definition at line 904 of file pngpriv.h.

◆ png_IDAT

#define png_IDAT PNG_U32( 73, 68, 65, 84)

Definition at line 886 of file pngpriv.h.

◆ png_IEND

#define png_IEND PNG_U32( 73, 69, 78, 68)

Definition at line 887 of file pngpriv.h.

◆ png_IHDR

#define png_IHDR PNG_U32( 73, 72, 68, 82)

Definition at line 888 of file pngpriv.h.

◆ PNG_IMPEXP

#define PNG_IMPEXP

Definition at line 367 of file pngpriv.h.

◆ PNG_INFLATE

#define PNG_INFLATE	(	pp,
		flush
	)	inflate(&(pp)->zstream, flush)

Definition at line 1731 of file pngpriv.h.

◆ PNG_INTEL_SSE_IMPLEMENTATION

#define PNG_INTEL_SSE_IMPLEMENTATION 0

Definition at line 250 of file pngpriv.h.

◆ PNG_INTEL_SSE_OPT

#define PNG_INTEL_SSE_OPT 0

Definition at line 225 of file pngpriv.h.

◆ PNG_INTERLACE

#define PNG_INTERLACE 0x0002U

Definition at line 659 of file pngpriv.h.

◆ PNG_INTERNAL_CALLBACK

#define PNG_INTERNAL_CALLBACK	(	type,
		name,
		args,
		attributes
	)

Value:

PNG_LINKAGE_CALLBACK PNG_FUNCTION(type, (PNGCBAPI name), args,\

PNG_EMPTY attributes)

type

GLuint GLuint GLsizei GLenum type

Definition: gl.h:1545

PNG_FUNCTION

#define PNG_FUNCTION(type, name, args, attributes)

Definition: pngconf.h:274

PNG_EMPTY

#define PNG_EMPTY

Definition: pngconf.h:295

PNGCBAPI

#define PNGCBAPI

Definition: pngconf.h:245

PNG_LINKAGE_CALLBACK

#define PNG_LINKAGE_CALLBACK

Definition: pnglibconf.h:212

args

Definition: match.c:390

name

Definition: name.c:39

Definition at line 394 of file pngpriv.h.

◆ PNG_INTERNAL_DATA

#define PNG_INTERNAL_DATA	(	type,
		name,
		array
	)	PNG_LINKAGE_DATA type name array

Definition at line 385 of file pngpriv.h.

◆ PNG_INTERNAL_FUNCTION

#define PNG_INTERNAL_FUNCTION	(	type,
		name,
		args,
		attributes
	)	PNG_LINKAGE_FUNCTION PNG_FUNCTION(type, name, args, PNG_EMPTY attributes)

Definition at line 389 of file pngpriv.h.

◆ PNG_INVERT_ALPHA

#define PNG_INVERT_ALPHA 0x80000U

Definition at line 677 of file pngpriv.h.

◆ PNG_INVERT_MONO

#define PNG_INVERT_MONO 0x0020U

Definition at line 663 of file pngpriv.h.

◆ PNG_IS_READ_STRUCT

#define PNG_IS_READ_STRUCT 0x8000U /* Else is a write struct */

Definition at line 655 of file pngpriv.h.

◆ png_isaligned

#define png_isaligned	(	ptr,
		type
	)	(((type)(size_t)((const void*)(ptr)) & (type)(png_alignof(type)-1)) == 0)

Definition at line 622 of file pngpriv.h.

◆ png_iTXt

#define png_iTXt PNG_U32(105, 84, 88, 116)

Definition at line 905 of file pngpriv.h.

◆ PNG_KNOWN_CHUNKS

#define PNG_KNOWN_CHUNKS

Value:

   PNG_CHUNK(IHDR,  0)\
   PNG_CHUNK(PLTE,  1)\
   PNG_CHUNK(IDAT,  2)\
   PNG_CHUNK(IEND,  3)\
   PNG_CHUNK(acTL,  4)\
   PNG_CHUNK(bKGD,  5)\
   PNG_CHUNK(cHRM,  6)\
   PNG_CHUNK(cICP,  7)\
   PNG_CHUNK(cLLI,  8)\
   PNG_CHUNK(eXIf,  9)\
   PNG_CHUNK(fcTL, 10)\
   PNG_CHUNK(fdAT, 11)\
   PNG_CHUNK(gAMA, 12)\
   PNG_CHUNK(hIST, 13)\
   PNG_CHUNK(iCCP, 14)\
   PNG_CHUNK(iTXt, 15)\
   PNG_CHUNK(mDCV, 16)\
   PNG_CHUNK(oFFs, 17)\
   PNG_CHUNK(pCAL, 18)\
   PNG_CHUNK(pHYs, 19)\
   PNG_CHUNK(sBIT, 20)\
   PNG_CHUNK(sCAL, 21)\
   PNG_CHUNK(sPLT, 22)\
   PNG_CHUNK(sRGB, 23)\
   PNG_CHUNK(tEXt, 24)\
   PNG_CHUNK(tIME, 25)\
   PNG_CHUNK(tRNS, 26)\
   PNG_CHUNK(zTXt, 27)

Definition at line 967 of file pngpriv.h.

◆ PNG_LIB_GAMMA_MAX

#define PNG_LIB_GAMMA_MAX 10000000

Definition at line 1013 of file pngpriv.h.

◆ PNG_LIB_GAMMA_MIN

#define PNG_LIB_GAMMA_MIN 1000

Definition at line 1012 of file pngpriv.h.

◆ PNG_LOONGARCH_LSX_IMPLEMENTATION

#define PNG_LOONGARCH_LSX_IMPLEMENTATION 0

Definition at line 302 of file pngpriv.h.

◆ PNG_LOONGARCH_LSX_OPT

#define PNG_LOONGARCH_LSX_OPT 0

Definition at line 207 of file pngpriv.h.

◆ png_mDCV

#define png_mDCV PNG_U32(109, 68, 67, 86) /* PNGv3 */

Definition at line 906 of file pngpriv.h.

◆ PNG_MIPS_MMI_IMPLEMENTATION

#define PNG_MIPS_MMI_IMPLEMENTATION 0

Definition at line 288 of file pngpriv.h.

◆ PNG_MIPS_MMI_OPT

#define PNG_MIPS_MMI_OPT 0

Definition at line 191 of file pngpriv.h.

◆ PNG_MIPS_MSA_IMPLEMENTATION

#define PNG_MIPS_MSA_IMPLEMENTATION 0

Definition at line 272 of file pngpriv.h.

◆ PNG_MIPS_MSA_OPT

#define PNG_MIPS_MSA_OPT 0

Definition at line 178 of file pngpriv.h.

◆ png_oFFs

#define png_oFFs PNG_U32(111, 70, 70, 115)

Definition at line 907 of file pngpriv.h.

◆ PNG_OUT_OF_RANGE

#define PNG_OUT_OF_RANGE	(	value,
		ideal,
		delta
	)	( (value) < (ideal)-(delta) \|\| (value) > (ideal)+(delta) )

Definition at line 782 of file pngpriv.h.

◆ PNG_PACK

#define PNG_PACK 0x0004U

Definition at line 660 of file pngpriv.h.

◆ PNG_PACKSWAP

#define PNG_PACKSWAP 0x10000U

Definition at line 674 of file pngpriv.h.

◆ PNG_PADBITS

#define PNG_PADBITS	(	pixel_bits,
		width
	)	((8 - PNG_TRAILBITS(pixel_bits, width)) % 8)

Definition at line 774 of file pngpriv.h.

◆ png_pCAL

#define png_pCAL PNG_U32(112, 67, 65, 76)

Definition at line 908 of file pngpriv.h.

◆ png_pHYs

#define png_pHYs PNG_U32(112, 72, 89, 115)

Definition at line 909 of file pngpriv.h.

◆ png_PLTE

#define png_PLTE PNG_U32( 80, 76, 84, 69)

Definition at line 889 of file pngpriv.h.

◆ PNG_POWERPC_VSX_IMPLEMENTATION

#define PNG_POWERPC_VSX_IMPLEMENTATION 0

Definition at line 295 of file pngpriv.h.

◆ PNG_POWERPC_VSX_OPT

#define PNG_POWERPC_VSX_OPT 0

Definition at line 199 of file pngpriv.h.

◆ PNG_PRIVATE

#define PNG_PRIVATE

Definition at line 376 of file pngpriv.h.

◆ PNG_QUANTIZE

#define PNG_QUANTIZE 0x0040U

Definition at line 664 of file pngpriv.h.

◆ PNG_RELEASE_BUILD

#define PNG_RELEASE_BUILD (PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC)

Definition at line 447 of file pngpriv.h.

◆ PNG_RGB_TO_GRAY

#define PNG_RGB_TO_GRAY 0x600000U /* two bits, RGB_TO_GRAY_ERR|WARN */

Definition at line 681 of file pngpriv.h.

◆ PNG_RGB_TO_GRAY_ERR

#define PNG_RGB_TO_GRAY_ERR 0x200000U

Definition at line 679 of file pngpriv.h.

◆ PNG_RGB_TO_GRAY_WARN

#define PNG_RGB_TO_GRAY_WARN 0x400000U

Definition at line 680 of file pngpriv.h.

◆ PNG_RGBA

#define PNG_RGBA 0x0800U

Definition at line 669 of file pngpriv.h.

◆ PNG_RISCV_RVV_IMPLEMENTATION

#define PNG_RISCV_RVV_IMPLEMENTATION 0

Definition at line 312 of file pngpriv.h.

◆ PNG_RISCV_RVV_OPT

#define PNG_RISCV_RVV_OPT 0

Definition at line 157 of file pngpriv.h.

◆ PNG_ROWBYTES

#define PNG_ROWBYTES	(	pixel_bits,
		width
	)

Value:

    ((pixel_bits) >= 8 ? \
    ((size_t)(width) * (((size_t)(pixel_bits)) >> 3)) : \
    (( ((size_t)(width) * ((size_t)(pixel_bits))) + 7) >> 3) )

Definition at line 754 of file pngpriv.h.

◆ png_sBIT

#define png_sBIT PNG_U32(115, 66, 73, 84)

Definition at line 910 of file pngpriv.h.

◆ png_sCAL

#define png_sCAL PNG_U32(115, 67, 65, 76)

Definition at line 911 of file pngpriv.h.

◆ PNG_SCALE_16_TO_8

#define PNG_SCALE_16_TO_8 0x4000000U /* Added to libpng-1.5.4 */

Definition at line 685 of file pngpriv.h.

◆ PNG_SHIFT

#define PNG_SHIFT 0x0008U

Definition at line 661 of file pngpriv.h.

◆ png_sPLT

#define png_sPLT PNG_U32(115, 80, 76, 84)

Definition at line 912 of file pngpriv.h.

◆ png_sRGB

#define png_sRGB PNG_U32(115, 82, 71, 66)

Definition at line 913 of file pngpriv.h.

◆ png_sTER

#define png_sTER PNG_U32(115, 84, 69, 82)

Definition at line 914 of file pngpriv.h.

◆ PNG_STRING_FROM_CHUNK

#define PNG_STRING_FROM_CHUNK	(	s,
		c
	)

Value:

   (void)(((char*)(s))[0]=(char)(((c)>>24) & 0xff), \
   ((char*)(s))[1]=(char)(((c)>>16) & 0xff),\
   ((char*)(s))[2]=(char)(((c)>>8) & 0xff), \
   ((char*)(s))[3]=(char)((c & 0xff)))

Definition at line 930 of file pngpriv.h.

◆ PNG_STRIP_ALPHA

#define PNG_STRIP_ALPHA 0x40000U

Definition at line 676 of file pngpriv.h.

◆ PNG_STRUCT_INFO

#define PNG_STRUCT_INFO 0x0002U

Definition at line 692 of file pngpriv.h.

◆ PNG_STRUCT_PNG

#define PNG_STRUCT_PNG 0x0001U

Definition at line 691 of file pngpriv.h.

◆ PNG_SWAP_ALPHA

#define PNG_SWAP_ALPHA 0x20000U

Definition at line 675 of file pngpriv.h.

◆ PNG_SWAP_BYTES

#define PNG_SWAP_BYTES 0x0010U

Definition at line 662 of file pngpriv.h.

◆ png_tEXt

#define png_tEXt PNG_U32(116, 69, 88, 116)

Definition at line 915 of file pngpriv.h.

◆ png_tIME

#define png_tIME PNG_U32(116, 73, 77, 69)

Definition at line 916 of file pngpriv.h.

◆ PNG_TRAILBITS

#define PNG_TRAILBITS	(	pixel_bits,
		width
	)	(((pixel_bits) * ((width) % (png_uint_32)8)) % 8)

Definition at line 771 of file pngpriv.h.

◆ png_tRNS

#define png_tRNS PNG_U32(116, 82, 78, 83)

Definition at line 917 of file pngpriv.h.

◆ PNG_U32

#define PNG_U32	(	b1,
		b2,
		b3,
		b4
	)	(PNG_32b(b1,24) \| PNG_32b(b2,16) \| PNG_32b(b3,8) \| PNG_32b(b4,0))

Definition at line 844 of file pngpriv.h.

◆ PNG_UNEXPECTED_ZLIB_RETURN

#define PNG_UNEXPECTED_ZLIB_RETURN (-7)

Definition at line 1077 of file pngpriv.h.

◆ PNG_UNUSED

#define PNG_UNUSED ( param ) (void)param;

Definition at line 479 of file pngpriv.h.

◆ PNG_USE_COMPILE_TIME_MASKS

#define PNG_USE_COMPILE_TIME_MASKS 1

Definition at line 1492 of file pngpriv.h.

◆ PNG_USER_TRANSFORM

#define PNG_USER_TRANSFORM 0x100000U

Definition at line 678 of file pngpriv.h.

◆ png_voidcast

#define png_voidcast	(	type,
		value
	)	(value)

Definition at line 535 of file pngpriv.h.

◆ png_warning_parameter

#define png_warning_parameter	(	p,
		number,
		string
	)	((void)0)

Definition at line 497 of file pngpriv.h.

◆ png_warning_parameter_signed

#define png_warning_parameter_signed	(	p,
		number,
		format,
		value
	)	((void)0)

Definition at line 499 of file pngpriv.h.

◆ png_warning_parameter_unsigned

#define png_warning_parameter_unsigned	(	p,
		number,
		format,
		value
	)	((void)0)

Definition at line 498 of file pngpriv.h.

◆ PNG_WARNING_PARAMETERS

#define PNG_WARNING_PARAMETERS ( p )

Definition at line 501 of file pngpriv.h.

◆ PNG_WROTE_eXIf

#define PNG_WROTE_eXIf 0x4000U

Definition at line 654 of file pngpriv.h.

◆ PNG_WROTE_INFO_BEFORE_PLTE

#define PNG_WROTE_INFO_BEFORE_PLTE 0x400U

Definition at line 650 of file pngpriv.h.

◆ PNG_WROTE_tIME

#define PNG_WROTE_tIME 0x200U

Definition at line 649 of file pngpriv.h.

◆ png_zTXt

#define png_zTXt PNG_U32(122, 84, 88, 116)

Definition at line 918 of file pngpriv.h.

◆ PNGFAPI

#define PNGFAPI /* PRIVATE */

Definition at line 514 of file pngpriv.h.

◆ PNGLIB_BUILD

#define PNGLIB_BUILD /*libpng is being built, not used*/

Definition at line 59 of file pngpriv.h.

Typedef Documentation

◆ png_const_doublep

typedef const png_double* png_const_doublep

Definition at line 415 of file pngpriv.h.

◆ png_const_uint_16pp

typedef const png_uint_16p* png_const_uint_16pp

Definition at line 1042 of file pngpriv.h.

◆ png_double

typedef struct png_incomplete png_double

Definition at line 413 of file pngpriv.h.

◆ png_doublep

typedef png_double* png_doublep

Definition at line 414 of file pngpriv.h.

◆ png_doublepp

typedef png_double** png_doublepp

Definition at line 416 of file pngpriv.h.

Enumeration Type Documentation

◆ png_handle_result_code

enum png_handle_result_code

Enumerator
handled_error
handled_discarded
handled_saved
handled_ok

Definition at line 1779 of file pngpriv.h.

{
   /* Result of a call to png_handle_chunk made to handle the current chunk
    * png_struct::chunk_name on read.  Always informational, either the stream
    * is read for the next chunk or the routine will call png_error.
    *
    * NOTE: order is important internally.  handled_saved and above are regarded
    * as handling the chunk.
    */
   handled_error = 0,  /* bad crc or known and bad format or too long */
   handled_discarded,  /* not saved in the unknown chunk list */
   handled_saved,      /* saved in the unknown chunk list */
   handled_ok          /* known, supported and handled without error */
} png_handle_result_code;

Function Documentation

◆ PNG_INTERNAL_FUNCTION() [1/34]

PNG_INTERNAL_FUNCTION	(	int	,
		png_crc_finish	,
		(png_structrp png_ptr, png_uint_32 skip)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [2/34]

PNG_INTERNAL_FUNCTION	(	int	,
		png_user_version_check	,
		(png_structrp png_ptr, png_const_charp user_png_ver)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [3/34]

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() [4/34]

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() [5/34]

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() [6/34]

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() [7/34]

PNG_INTERNAL_FUNCTION	(	png_uint_32	,
		png_read_chunk_header	,
		(png_structrp png_ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [8/34]

PNG_INTERNAL_FUNCTION	(	png_voidp	,
		png_malloc_base	,
		(png_const_structrp png_ptr, png_alloc_size_t size)	,
		PNG_ALLOCATED
	)

◆ PNG_INTERNAL_FUNCTION() [9/34]

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() [10/34]

PNG_INTERNAL_FUNCTION	(	void	PNGCBAPI,
		png_default_read_data	,
		(png_structp png_ptr, png_bytep data, size_t length)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [11/34]

PNG_INTERNAL_FUNCTION	(	void	PNGCBAPI,
		png_default_write_data	,
		(png_structp png_ptr, png_bytep data, size_t length)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [12/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_calculate_crc	,
		(png_structrp png_ptr, png_const_bytep ptr, size_t length)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [13/34]

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() [14/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_chunk_report	,
		(png_const_structrp png_ptr, png_const_charp message, int error)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [15/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_combine_row	,
		(png_const_structrp png_ptr, png_bytep row, int display)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [16/34]

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() [17/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_crc_read	,
		(png_structrp png_ptr, png_bytep buf, png_uint_32 length)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [18/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_destroy_png_struct	,
		(png_structrp png_ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [19/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_free_jmpbuf	,
		(png_structrp png_ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [20/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_read_data	,
		(png_structrp png_ptr, png_bytep data, size_t length)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [21/34]

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() [22/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_read_sig	,
		(png_structrp png_ptr, png_inforp info_ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [23/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_read_start_row	,
		(png_structrp png_ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [24/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_reset_crc	,
		(png_structrp png_ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [25/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_write_data	,
		(png_structrp png_ptr, png_const_bytep data, size_t length)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [26/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_write_find_filter	,
		(png_structrp png_ptr, png_row_infop row_info)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [27/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_write_finish_row	,
		(png_structrp png_ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [28/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_write_IEND	,
		(png_structrp png_ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [29/34]

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() [30/34]

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() [31/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_write_start_row	,
		(png_structrp png_ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [32/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_zfree	,
		(voidpf png_ptr, voidpf ptr)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [33/34]

PNG_INTERNAL_FUNCTION	(	void	,
		png_zstream_error	,
		(png_structrp png_ptr, int ret)	,
		PNG_EMPTY
	)

◆ PNG_INTERNAL_FUNCTION() [34/34]

PNG_INTERNAL_FUNCTION	(	voidpf	,
		png_zalloc	,
		(voidpf png_ptr, uInt items, uInt size)	,
		PNG_ALLOCATED
	)

Macros

Typedefs

Enumerations

Functions

Macro Definition Documentation

◆ _POSIX_SOURCE

◆ PNG_16_TO_8

◆ PNG_32b

◆ PNG_32to8

◆ PNG_ABORT

◆ png_acTL

◆ PNG_ADD_ALPHA

◆ PNG_ALIGN_ALWAYS

◆ PNG_ALIGN_NONE

◆ PNG_ALIGN_OFFSET

◆ PNG_ALIGN_SIZE

◆ PNG_ALIGN_TYPE

◆ png_aligncast

◆ png_aligncastconst

◆ png_alignof

◆ png_app_error

◆ png_app_warning

◆ PNG_ARM_NEON_IMPLEMENTATION

◆ PNG_ARM_NEON_OPT

◆ PNG_BACKGROUND_EXPAND

◆ PNG_BACKGROUND_IS_GRAY

◆ PNG_BGR

◆ png_bKGD

◆ png_cHRM

◆ PNG_CHUNK_ANCILLARY

◆ PNG_CHUNK_CRITICAL

◆ PNG_CHUNK_ERROR

◆ PNG_CHUNK_FROM_STRING

◆ PNG_CHUNK_NAME_VALID

◆ PNG_CHUNK_PRIVATE

◆ PNG_CHUNK_RESERVED

◆ PNG_CHUNK_SAFE_TO_COPY

◆ PNG_CHUNK_WARNING

◆ PNG_CHUNK_WRITE_ERROR

◆ png_cICP

◆ png_cLLI

◆ PNG_CN_VALID_ASCII

◆ PNG_CN_VALID_UPPER

◆ PNG_COLOR_DIST

◆ PNG_COMPOSE

◆ png_constcast

◆ PNG_CSTRING_FROM_CHUNK

◆ PNG_DEPRECATED

◆ PNG_DIV257

◆ PNG_DIV65535

◆ PNG_DLL_EXPORT

◆ PNG_ENCODE_ALPHA

◆ png_eXIf

◆ PNG_EXPAND

◆ PNG_EXPAND_16

◆ PNG_EXPAND_tRNS

◆ png_fcTL

◆ png_fdAT

◆ PNG_FILLER

◆ png_fixed_error

◆ PNG_FIXED_EXPORT

◆ PNG_FLAG_APP_ERRORS_WARN

◆ PNG_FLAG_APP_WARNINGS_WARN

◆ PNG_FLAG_BENIGN_ERRORS_WARN

◆ PNG_FLAG_CRC_ANCILLARY_MASK

◆ PNG_FLAG_CRC_ANCILLARY_NOWARN

◆ PNG_FLAG_CRC_ANCILLARY_USE

◆ PNG_FLAG_CRC_CRITICAL_IGNORE

◆ PNG_FLAG_CRC_CRITICAL_MASK

◆ PNG_FLAG_CRC_CRITICAL_USE

◆ PNG_FLAG_CRC_MASK

◆ PNG_FLAG_DETECT_UNINITIALIZED

◆ PNG_FLAG_FILLER_AFTER

◆ PNG_FLAG_LIBRARY_MISMATCH

◆ PNG_FLAG_OPTIMIZE_ALPHA

◆ PNG_FLAG_ROW_INIT

◆ PNG_FLAG_STRIP_ERROR_TEXT

◆ PNG_FLAG_ZLIB_CUSTOM_STRATEGY

◆ PNG_FLAG_ZSTREAM_ENDED

◆ PNG_FLAG_ZSTREAM_INITIALIZED