mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
483 lines
20 KiB
483 lines
20 KiB
|
|
/* pngstruct.h - header file for PNG reference library |
|
* |
|
* Last changed in libpng 1.6.24 [August 4, 2016] |
|
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson |
|
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
|
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
|
* |
|
* This code is released under the libpng license. |
|
* For conditions of distribution and use, see the disclaimer |
|
* and license in png.h |
|
*/ |
|
|
|
/* The structure that holds the information to read and write PNG files. |
|
* The only people who need to care about what is inside of this are the |
|
* people who will be modifying the library for their own special needs. |
|
* It should NOT be accessed directly by an application. |
|
*/ |
|
|
|
#ifndef PNGSTRUCT_H |
|
#define PNGSTRUCT_H |
|
/* zlib.h defines the structure z_stream, an instance of which is included |
|
* in this structure and is required for decompressing the LZ compressed |
|
* data in PNG files. |
|
*/ |
|
#ifndef ZLIB_CONST |
|
/* We must ensure that zlib uses 'const' in declarations. */ |
|
# define ZLIB_CONST |
|
#endif |
|
#include "zlib.h" |
|
#ifdef const |
|
/* zlib.h sometimes #defines const to nothing, undo this. */ |
|
# undef const |
|
#endif |
|
|
|
/* zlib.h has mediocre z_const use before 1.2.6, this stuff is for compatibility |
|
* with older builds. |
|
*/ |
|
#if ZLIB_VERNUM < 0x1260 |
|
# define PNGZ_MSG_CAST(s) png_constcast(char*,s) |
|
# define PNGZ_INPUT_CAST(b) png_constcast(png_bytep,b) |
|
#else |
|
# define PNGZ_MSG_CAST(s) (s) |
|
# define PNGZ_INPUT_CAST(b) (b) |
|
#endif |
|
|
|
/* zlib.h declares a magic type 'uInt' that limits the amount of data that zlib |
|
* can handle at once. This type need be no larger than 16 bits (so maximum of |
|
* 65535), this define allows us to discover how big it is, but limited by the |
|
* maximuum for png_size_t. The value can be overriden in a library build |
|
* (pngusr.h, or set it in CPPFLAGS) and it works to set it to a considerably |
|
* lower value (e.g. 255 works). A lower value may help memory usage (slightly) |
|
* and may even improve performance on some systems (and degrade it on others.) |
|
*/ |
|
#ifndef ZLIB_IO_MAX |
|
# define ZLIB_IO_MAX ((uInt)-1) |
|
#endif |
|
|
|
#ifdef PNG_WRITE_SUPPORTED |
|
/* The type of a compression buffer list used by the write code. */ |
|
typedef struct png_compression_buffer |
|
{ |
|
struct png_compression_buffer *next; |
|
png_byte output[1]; /* actually zbuf_size */ |
|
} png_compression_buffer, *png_compression_bufferp; |
|
|
|
#define PNG_COMPRESSION_BUFFER_SIZE(pp)\ |
|
(offsetof(png_compression_buffer, output) + (pp)->zbuffer_size) |
|
#endif |
|
|
|
/* Colorspace support; structures used in png_struct, png_info and in internal |
|
* functions to hold and communicate information about the color space. |
|
* |
|
* PNG_COLORSPACE_SUPPORTED is only required if the application will perform |
|
* colorspace corrections, otherwise all the colorspace information can be |
|
* skipped and the size of libpng can be reduced (significantly) by compiling |
|
* out the colorspace support. |
|
*/ |
|
#ifdef PNG_COLORSPACE_SUPPORTED |
|
/* The chromaticities of the red, green and blue colorants and the chromaticity |
|
* of the corresponding white point (i.e. of rgb(1.0,1.0,1.0)). |
|
*/ |
|
typedef struct png_xy |
|
{ |
|
png_fixed_point redx, redy; |
|
png_fixed_point greenx, greeny; |
|
png_fixed_point bluex, bluey; |
|
png_fixed_point whitex, whitey; |
|
} png_xy; |
|
|
|
/* The same data as above but encoded as CIE XYZ values. When this data comes |
|
* from chromaticities the sum of the Y values is assumed to be 1.0 |
|
*/ |
|
typedef struct png_XYZ |
|
{ |
|
png_fixed_point red_X, red_Y, red_Z; |
|
png_fixed_point green_X, green_Y, green_Z; |
|
png_fixed_point blue_X, blue_Y, blue_Z; |
|
} png_XYZ; |
|
#endif /* COLORSPACE */ |
|
|
|
#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED) |
|
/* A colorspace is all the above plus, potentially, profile information; |
|
* however at present libpng does not use the profile internally so it is only |
|
* stored in the png_info struct (if iCCP is supported.) The rendering intent |
|
* is retained here and is checked. |
|
* |
|
* The file gamma encoding information is also stored here and gamma correction |
|
* is done by libpng, whereas color correction must currently be done by the |
|
* application. |
|
*/ |
|
typedef struct png_colorspace |
|
{ |
|
#ifdef PNG_GAMMA_SUPPORTED |
|
png_fixed_point gamma; /* File gamma */ |
|
#endif |
|
|
|
#ifdef PNG_COLORSPACE_SUPPORTED |
|
png_xy end_points_xy; /* End points as chromaticities */ |
|
png_XYZ end_points_XYZ; /* End points as CIE XYZ colorant values */ |
|
png_uint_16 rendering_intent; /* Rendering intent of a profile */ |
|
#endif |
|
|
|
/* Flags are always defined to simplify the code. */ |
|
png_uint_16 flags; /* As defined below */ |
|
} png_colorspace, * PNG_RESTRICT png_colorspacerp; |
|
|
|
typedef const png_colorspace * PNG_RESTRICT png_const_colorspacerp; |
|
|
|
/* General flags for the 'flags' field */ |
|
#define PNG_COLORSPACE_HAVE_GAMMA 0x0001 |
|
#define PNG_COLORSPACE_HAVE_ENDPOINTS 0x0002 |
|
#define PNG_COLORSPACE_HAVE_INTENT 0x0004 |
|
#define PNG_COLORSPACE_FROM_gAMA 0x0008 |
|
#define PNG_COLORSPACE_FROM_cHRM 0x0010 |
|
#define PNG_COLORSPACE_FROM_sRGB 0x0020 |
|
#define PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB 0x0040 |
|
#define PNG_COLORSPACE_MATCHES_sRGB 0x0080 /* exact match on profile */ |
|
#define PNG_COLORSPACE_INVALID 0x8000 |
|
#define PNG_COLORSPACE_CANCEL(flags) (0xffff ^ (flags)) |
|
#endif /* COLORSPACE || GAMMA */ |
|
|
|
struct png_struct_def |
|
{ |
|
#ifdef PNG_SETJMP_SUPPORTED |
|
jmp_buf jmp_buf_local; /* New name in 1.6.0 for jmp_buf in png_struct */ |
|
png_longjmp_ptr longjmp_fn;/* setjmp non-local goto function. */ |
|
jmp_buf *jmp_buf_ptr; /* passed to longjmp_fn */ |
|
size_t jmp_buf_size; /* size of the above, if allocated */ |
|
#endif |
|
png_error_ptr error_fn; /* function for printing errors and aborting */ |
|
#ifdef PNG_WARNINGS_SUPPORTED |
|
png_error_ptr warning_fn; /* function for printing warnings */ |
|
#endif |
|
png_voidp error_ptr; /* user supplied struct for error functions */ |
|
png_rw_ptr write_data_fn; /* function for writing output data */ |
|
png_rw_ptr read_data_fn; /* function for reading input data */ |
|
png_voidp io_ptr; /* ptr to application struct for I/O functions */ |
|
|
|
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED |
|
png_user_transform_ptr read_user_transform_fn; /* user read transform */ |
|
#endif |
|
|
|
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED |
|
png_user_transform_ptr write_user_transform_fn; /* user write transform */ |
|
#endif |
|
|
|
/* These were added in libpng-1.0.2 */ |
|
#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED |
|
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ |
|
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) |
|
png_voidp user_transform_ptr; /* user supplied struct for user transform */ |
|
png_byte user_transform_depth; /* bit depth of user transformed pixels */ |
|
png_byte user_transform_channels; /* channels in user transformed pixels */ |
|
#endif |
|
#endif |
|
|
|
png_uint_32 mode; /* tells us where we are in the PNG file */ |
|
png_uint_32 flags; /* flags indicating various things to libpng */ |
|
png_uint_32 transformations; /* which transformations to perform */ |
|
|
|
png_uint_32 zowner; /* ID (chunk type) of zstream owner, 0 if none */ |
|
z_stream zstream; /* decompression structure */ |
|
|
|
#ifdef PNG_WRITE_SUPPORTED |
|
png_compression_bufferp zbuffer_list; /* Created on demand during write */ |
|
uInt zbuffer_size; /* size of the actual buffer */ |
|
|
|
int zlib_level; /* holds zlib compression level */ |
|
int zlib_method; /* holds zlib compression method */ |
|
int zlib_window_bits; /* holds zlib compression window bits */ |
|
int zlib_mem_level; /* holds zlib compression memory level */ |
|
int zlib_strategy; /* holds zlib compression strategy */ |
|
#endif |
|
/* Added at libpng 1.5.4 */ |
|
#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED |
|
int zlib_text_level; /* holds zlib compression level */ |
|
int zlib_text_method; /* holds zlib compression method */ |
|
int zlib_text_window_bits; /* holds zlib compression window bits */ |
|
int zlib_text_mem_level; /* holds zlib compression memory level */ |
|
int zlib_text_strategy; /* holds zlib compression strategy */ |
|
#endif |
|
/* End of material added at libpng 1.5.4 */ |
|
/* Added at libpng 1.6.0 */ |
|
#ifdef PNG_WRITE_SUPPORTED |
|
int zlib_set_level; /* Actual values set into the zstream on write */ |
|
int zlib_set_method; |
|
int zlib_set_window_bits; |
|
int zlib_set_mem_level; |
|
int zlib_set_strategy; |
|
#endif |
|
|
|
png_uint_32 width; /* width of image in pixels */ |
|
png_uint_32 height; /* height of image in pixels */ |
|
png_uint_32 num_rows; /* number of rows in current pass */ |
|
png_uint_32 usr_width; /* width of row at start of write */ |
|
png_size_t rowbytes; /* size of row in bytes */ |
|
png_uint_32 iwidth; /* width of current interlaced row in pixels */ |
|
png_uint_32 row_number; /* current row in interlace pass */ |
|
png_uint_32 chunk_name; /* PNG_CHUNK() id of current chunk */ |
|
png_bytep prev_row; /* buffer to save previous (unfiltered) row. |
|
* While reading this is a pointer into |
|
* big_prev_row; while writing it is separately |
|
* allocated if needed. |
|
*/ |
|
png_bytep row_buf; /* buffer to save current (unfiltered) row. |
|
* While reading, this is a pointer into |
|
* big_row_buf; while writing it is separately |
|
* allocated. |
|
*/ |
|
#ifdef PNG_WRITE_FILTER_SUPPORTED |
|
png_bytep try_row; /* buffer to save trial row when filtering */ |
|
png_bytep tst_row; /* buffer to save best trial row when filtering */ |
|
#endif |
|
png_size_t info_rowbytes; /* Added in 1.5.4: cache of updated row bytes */ |
|
|
|
png_uint_32 idat_size; /* current IDAT size for read */ |
|
png_uint_32 crc; /* current chunk CRC value */ |
|
png_colorp palette; /* palette from the input file */ |
|
png_uint_16 num_palette; /* number of color entries in palette */ |
|
|
|
/* Added at libpng-1.5.10 */ |
|
#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED |
|
int num_palette_max; /* maximum palette index found in IDAT */ |
|
#endif |
|
|
|
png_uint_16 num_trans; /* number of transparency values */ |
|
png_byte compression; /* file compression type (always 0) */ |
|
png_byte filter; /* file filter type (always 0) */ |
|
png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ |
|
png_byte pass; /* current interlace pass (0 - 6) */ |
|
png_byte do_filter; /* row filter flags (see PNG_FILTER_ in png.h ) */ |
|
png_byte color_type; /* color type of file */ |
|
png_byte bit_depth; /* bit depth of file */ |
|
png_byte usr_bit_depth; /* bit depth of users row: write only */ |
|
png_byte pixel_depth; /* number of bits per pixel */ |
|
png_byte channels; /* number of channels in file */ |
|
#ifdef PNG_WRITE_SUPPORTED |
|
png_byte usr_channels; /* channels at start of write: write only */ |
|
#endif |
|
png_byte sig_bytes; /* magic bytes read/written from start of file */ |
|
png_byte maximum_pixel_depth; |
|
/* pixel depth used for the row buffers */ |
|
png_byte transformed_pixel_depth; |
|
/* pixel depth after read/write transforms */ |
|
#if PNG_ZLIB_VERNUM >= 0x1240 |
|
png_byte zstream_start; /* at start of an input zlib stream */ |
|
#endif /* Zlib >= 1.2.4 */ |
|
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) |
|
png_uint_16 filler; /* filler bytes for pixel expansion */ |
|
#endif |
|
|
|
#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) ||\ |
|
defined(PNG_READ_ALPHA_MODE_SUPPORTED) |
|
png_byte background_gamma_type; |
|
png_fixed_point background_gamma; |
|
png_color_16 background; /* background color in screen gamma space */ |
|
#ifdef PNG_READ_GAMMA_SUPPORTED |
|
png_color_16 background_1; /* background normalized to gamma 1.0 */ |
|
#endif |
|
#endif /* bKGD */ |
|
|
|
#ifdef PNG_WRITE_FLUSH_SUPPORTED |
|
png_flush_ptr output_flush_fn; /* Function for flushing output */ |
|
png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */ |
|
png_uint_32 flush_rows; /* number of rows written since last flush */ |
|
#endif |
|
|
|
#ifdef PNG_READ_GAMMA_SUPPORTED |
|
int gamma_shift; /* number of "insignificant" bits in 16-bit gamma */ |
|
png_fixed_point screen_gamma; /* screen gamma value (display_exponent) */ |
|
|
|
png_bytep gamma_table; /* gamma table for 8-bit depth files */ |
|
png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */ |
|
#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \ |
|
defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \ |
|
defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) |
|
png_bytep gamma_from_1; /* converts from 1.0 to screen */ |
|
png_bytep gamma_to_1; /* converts from file to 1.0 */ |
|
png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */ |
|
png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */ |
|
#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */ |
|
#endif |
|
|
|
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED) |
|
png_color_8 sig_bit; /* significant bits in each available channel */ |
|
#endif |
|
|
|
#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) |
|
png_color_8 shift; /* shift for significant bit tranformation */ |
|
#endif |
|
|
|
#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \ |
|
|| defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) |
|
png_bytep trans_alpha; /* alpha values for paletted files */ |
|
png_color_16 trans_color; /* transparent color for non-paletted files */ |
|
#endif |
|
|
|
png_read_status_ptr read_row_fn; /* called after each row is decoded */ |
|
png_write_status_ptr write_row_fn; /* called after each row is encoded */ |
|
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED |
|
png_progressive_info_ptr info_fn; /* called after header data fully read */ |
|
png_progressive_row_ptr row_fn; /* called after a prog. row is decoded */ |
|
png_progressive_end_ptr end_fn; /* called after image is complete */ |
|
png_bytep save_buffer_ptr; /* current location in save_buffer */ |
|
png_bytep save_buffer; /* buffer for previously read data */ |
|
png_bytep current_buffer_ptr; /* current location in current_buffer */ |
|
png_bytep current_buffer; /* buffer for recently used data */ |
|
png_uint_32 push_length; /* size of current input chunk */ |
|
png_uint_32 skip_length; /* bytes to skip in input data */ |
|
png_size_t save_buffer_size; /* amount of data now in save_buffer */ |
|
png_size_t save_buffer_max; /* total size of save_buffer */ |
|
png_size_t buffer_size; /* total amount of available input data */ |
|
png_size_t current_buffer_size; /* amount of data now in current_buffer */ |
|
int process_mode; /* what push library is currently doing */ |
|
int cur_palette; /* current push library palette index */ |
|
|
|
#endif /* PROGRESSIVE_READ */ |
|
|
|
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__) |
|
/* For the Borland special 64K segment handler */ |
|
png_bytepp offset_table_ptr; |
|
png_bytep offset_table; |
|
png_uint_16 offset_table_number; |
|
png_uint_16 offset_table_count; |
|
png_uint_16 offset_table_count_free; |
|
#endif |
|
|
|
#ifdef PNG_READ_QUANTIZE_SUPPORTED |
|
png_bytep palette_lookup; /* lookup table for quantizing */ |
|
png_bytep quantize_index; /* index translation for palette files */ |
|
#endif |
|
|
|
/* Options */ |
|
#ifdef PNG_SET_OPTION_SUPPORTED |
|
png_byte options; /* On/off state (up to 4 options) */ |
|
#endif |
|
|
|
#if PNG_LIBPNG_VER < 10700 |
|
/* To do: remove this from libpng-1.7 */ |
|
#ifdef PNG_TIME_RFC1123_SUPPORTED |
|
char time_buffer[29]; /* String to hold RFC 1123 time text */ |
|
#endif |
|
#endif |
|
|
|
/* New members added in libpng-1.0.6 */ |
|
|
|
png_uint_32 free_me; /* flags items libpng is responsible for freeing */ |
|
|
|
#ifdef PNG_USER_CHUNKS_SUPPORTED |
|
png_voidp user_chunk_ptr; |
|
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED |
|
png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */ |
|
#endif |
|
#endif |
|
|
|
#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED |
|
int unknown_default; /* As PNG_HANDLE_* */ |
|
unsigned int num_chunk_list; /* Number of entries in the list */ |
|
png_bytep chunk_list; /* List of png_byte[5]; the textual chunk name |
|
* followed by a PNG_HANDLE_* byte */ |
|
#endif |
|
|
|
/* New members added in libpng-1.0.3 */ |
|
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED |
|
png_byte rgb_to_gray_status; |
|
/* Added in libpng 1.5.5 to record setting of coefficients: */ |
|
png_byte rgb_to_gray_coefficients_set; |
|
/* These were changed from png_byte in libpng-1.0.6 */ |
|
png_uint_16 rgb_to_gray_red_coeff; |
|
png_uint_16 rgb_to_gray_green_coeff; |
|
/* deleted in 1.5.5: rgb_to_gray_blue_coeff; */ |
|
#endif |
|
|
|
/* New member added in libpng-1.0.4 (renamed in 1.0.9) */ |
|
#if defined(PNG_MNG_FEATURES_SUPPORTED) |
|
/* Changed from png_byte to png_uint_32 at version 1.2.0 */ |
|
png_uint_32 mng_features_permitted; |
|
#endif |
|
|
|
/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */ |
|
#ifdef PNG_MNG_FEATURES_SUPPORTED |
|
png_byte filter_type; |
|
#endif |
|
|
|
/* New members added in libpng-1.2.0 */ |
|
|
|
/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */ |
|
#ifdef PNG_USER_MEM_SUPPORTED |
|
png_voidp mem_ptr; /* user supplied struct for mem functions */ |
|
png_malloc_ptr malloc_fn; /* function for allocating memory */ |
|
png_free_ptr free_fn; /* function for freeing memory */ |
|
#endif |
|
|
|
/* New member added in libpng-1.0.13 and 1.2.0 */ |
|
png_bytep big_row_buf; /* buffer to save current (unfiltered) row */ |
|
|
|
#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 |
|
palette color */ |
|
#endif |
|
|
|
/* New members added in libpng-1.0.16 and 1.2.6 */ |
|
png_byte compression_type; |
|
|
|
#ifdef PNG_USER_LIMITS_SUPPORTED |
|
png_uint_32 user_width_max; |
|
png_uint_32 user_height_max; |
|
|
|
/* Added in libpng-1.4.0: Total number of sPLT, text, and unknown |
|
* chunks that can be stored (0 means unlimited). |
|
*/ |
|
png_uint_32 user_chunk_cache_max; |
|
|
|
/* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk |
|
* can occupy when decompressed. 0 means unlimited. |
|
*/ |
|
png_alloc_size_t user_chunk_malloc_max; |
|
#endif |
|
|
|
/* New member added in libpng-1.0.25 and 1.2.17 */ |
|
#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED |
|
/* Temporary storage for unknown chunk that the library doesn't recognize, |
|
* used while reading the chunk. |
|
*/ |
|
png_unknown_chunk unknown_chunk; |
|
#endif |
|
|
|
/* New member added in libpng-1.2.26 */ |
|
png_size_t old_big_row_buf_size; |
|
|
|
#ifdef PNG_READ_SUPPORTED |
|
/* New member added in libpng-1.2.30 */ |
|
png_bytep read_buffer; /* buffer for reading chunk data */ |
|
png_alloc_size_t read_buffer_size; /* current size of the buffer */ |
|
#endif |
|
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED |
|
uInt IDAT_read_size; /* limit on read buffer size for IDAT */ |
|
#endif |
|
|
|
#ifdef PNG_IO_STATE_SUPPORTED |
|
/* New member added in libpng-1.4.0 */ |
|
png_uint_32 io_state; |
|
#endif |
|
|
|
/* New member added in libpng-1.5.6 */ |
|
png_bytep big_prev_row; |
|
|
|
/* New member added in libpng-1.5.7 */ |
|
void (*read_filter[PNG_FILTER_VALUE_LAST-1])(png_row_infop row_info, |
|
png_bytep row, png_const_bytep prev_row); |
|
|
|
#ifdef PNG_READ_SUPPORTED |
|
#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED) |
|
png_colorspace colorspace; |
|
#endif |
|
#endif |
|
}; |
|
#endif /* PNGSTRUCT_H */
|
|
|