| |
| /* pngpriv.h - private declarations for use inside libpng |
| * |
| * libpng version 1.4.22 - September 28, 2017 |
| * For conditions of distribution and use, see copyright notice in png.h |
| * Copyright (c) 1998-2002,2004,2006-2014,2017 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 symbols declared in this file (including the functions declared |
| * as PNG_EXTERN) are PRIVATE. They are not part of the libpng public |
| * interface, and are not recommended for use by regular applications. |
| * Some of them may become public in the future; others may stay private, |
| * change in an incompatible way, or even disappear. |
| * Although the libpng users are not forbidden to include this header, |
| * they should be well aware of the issues that may arise from doing so. |
| */ |
| |
| #ifndef PNGPRIV_H |
| #define PNGPRIV_H |
| |
| #ifndef PNG_VERSION_INFO_ONLY |
| |
| #if defined(_AIX) && defined(_ALL_SOURCE) |
| /* On AIX if _ALL_SOURCE is defined standard header files (including |
| * stdlib.h) define identifiers that are not permitted by the ANSI and |
| * POSIX standards. In particular 'jmpbuf' is #defined and this will |
| * prevent compilation of libpng. The following prevents this: |
| */ |
| # undef _ALL_SOURCE |
| #endif |
| |
| #include <stdlib.h> |
| |
| #ifndef PNG_EXTERN |
| /* The functions exported by PNG_EXTERN are internal functions, which |
| * aren't usually used outside the library (as far as I know), so it is |
| * debatable if they should be exported at all. In the future, when it |
| * is possible to have run-time registry of chunk-handling functions, |
| * some of these will be made available again. |
| # define PNG_EXTERN extern |
| */ |
| # define PNG_EXTERN |
| #endif |
| |
| /* Other defines specific to compilers can go here. Try to keep |
| * them inside an appropriate ifdef/endif pair for portability. |
| */ |
| |
| #ifdef PNG_FLOATING_POINT_SUPPORTED |
| # ifdef MACOS |
| /* We need to check that <math.h> hasn't already been included earlier |
| * as it seems it doesn't agree with <fp.h>, yet we should really use |
| * <fp.h> if possible. |
| */ |
| # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) |
| # include <fp.h> |
| # endif |
| # else |
| # include <math.h> |
| # endif |
| # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) |
| /* Amiga SAS/C: We must include builtin FPU functions when compiling using |
| * MATH=68881 |
| */ |
| # include <m68881.h> |
| # endif |
| #endif |
| |
| /* Codewarrior on NT has linking problems without this. */ |
| #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) |
| # define PNG_ALWAYS_EXTERN |
| #endif |
| |
| /* This provides the non-ANSI (far) memory allocation routines. */ |
| #if defined(__TURBOC__) && defined(__MSDOS__) |
| # include <mem.h> |
| # include <alloc.h> |
| #endif |
| |
| #if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \ |
| defined(_WIN32) || defined(__WIN32__) |
| # include <windows.h> /* defines _WINDOWS_ macro */ |
| #endif |
| |
| /* Various modes of operation. Note that after an init, mode is set to |
| * zero automatically when the structure is created. |
| */ |
| #define PNG_HAVE_IHDR 0x01 |
| #define PNG_HAVE_PLTE 0x02 |
| #define PNG_HAVE_IDAT 0x04 |
| #define PNG_AFTER_IDAT 0x08 /* Have complete zlib datastream */ |
| #define PNG_HAVE_IEND 0x10 |
| #define PNG_HAVE_gAMA 0x20 |
| #define PNG_HAVE_cHRM 0x40 |
| #define PNG_HAVE_sRGB 0x80 |
| #define PNG_HAVE_CHUNK_HEADER 0x100 |
| #define PNG_WROTE_tIME 0x200 |
| #define PNG_WROTE_INFO_BEFORE_PLTE 0x400 |
| #define PNG_BACKGROUND_IS_GRAY 0x800 |
| #define PNG_HAVE_PNG_SIGNATURE 0x1000 |
| #define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */ |
| |
| /* Flags for the transformations the PNG library does on the image data */ |
| #define PNG_BGR 0x0001 |
| #define PNG_INTERLACE 0x0002 |
| #define PNG_PACK 0x0004 |
| #define PNG_SHIFT 0x0008 |
| #define PNG_SWAP_BYTES 0x0010 |
| #define PNG_INVERT_MONO 0x0020 |
| #define PNG_QUANTIZE 0x0040 /* formerly PNG_DITHER */ |
| #define PNG_BACKGROUND 0x0080 |
| #define PNG_BACKGROUND_EXPAND 0x0100 |
| /* 0x0200 unused */ |
| #define PNG_16_TO_8 0x0400 |
| #define PNG_RGBA 0x0800 |
| #define PNG_EXPAND 0x1000 |
| #define PNG_GAMMA 0x2000 |
| #define PNG_GRAY_TO_RGB 0x4000 |
| #define PNG_FILLER 0x8000L |
| #define PNG_PACKSWAP 0x10000L |
| #define PNG_SWAP_ALPHA 0x20000L |
| #define PNG_STRIP_ALPHA 0x40000L |
| #define PNG_INVERT_ALPHA 0x80000L |
| #define PNG_USER_TRANSFORM 0x100000L |
| #define PNG_RGB_TO_GRAY_ERR 0x200000L |
| #define PNG_RGB_TO_GRAY_WARN 0x400000L |
| #define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */ |
| /* 0x800000L Unused */ |
| #define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */ |
| #define PNG_EXPAND_tRNS 0x2000000L /* Added to libpng-1.2.9 */ |
| /* 0x4000000L unused */ |
| /* 0x8000000L unused */ |
| /* 0x10000000L unused */ |
| /* 0x20000000L unused */ |
| /* 0x40000000L unused */ |
| |
| /* Flags for png_create_struct */ |
| #define PNG_STRUCT_PNG 0x0001 |
| #define PNG_STRUCT_INFO 0x0002 |
| |
| /* Scaling factor for filter heuristic weighting calculations */ |
| #define PNG_WEIGHT_SHIFT 8 |
| #define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT)) |
| #define PNG_COST_SHIFT 3 |
| #define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT)) |
| |
| /* Flags for the png_ptr->flags rather than declaring a byte for each one */ |
| #define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001 |
| #define PNG_FLAG_ZLIB_CUSTOM_LEVEL 0x0002 |
| #define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL 0x0004 |
| #define PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS 0x0008 |
| #define PNG_FLAG_ZLIB_CUSTOM_METHOD 0x0010 |
| #define PNG_FLAG_ZLIB_FINISHED 0x0020 |
| #define PNG_FLAG_ROW_INIT 0x0040 |
| #define PNG_FLAG_FILLER_AFTER 0x0080 |
| #define PNG_FLAG_CRC_ANCILLARY_USE 0x0100 |
| #define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200 |
| #define PNG_FLAG_CRC_CRITICAL_USE 0x0400 |
| #define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800 |
| /* 0x1000 unused */ |
| /* 0x2000 unused */ |
| /* 0x4000 unused */ |
| #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L |
| #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L |
| #define PNG_FLAG_LIBRARY_MISMATCH 0x20000L |
| #define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L |
| #define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L |
| #define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L |
| #define PNG_FLAG_ADD_ALPHA 0x200000L /* Added to libpng-1.2.8 */ |
| #define PNG_FLAG_STRIP_ALPHA 0x400000L /* Added to libpng-1.2.8 */ |
| #define PNG_FLAG_BENIGN_ERRORS_WARN 0x800000L /* Added to libpng-1.4.0 */ |
| /* 0x1000000L unused */ |
| /* 0x2000000L unused */ |
| /* 0x4000000L unused */ |
| /* 0x8000000L unused */ |
| /* 0x10000000L unused */ |
| /* 0x20000000L unused */ |
| /* 0x40000000L unused */ |
| |
| #define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \ |
| PNG_FLAG_CRC_ANCILLARY_NOWARN) |
| |
| #define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \ |
| PNG_FLAG_CRC_CRITICAL_IGNORE) |
| |
| #define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \ |
| PNG_FLAG_CRC_CRITICAL_MASK) |
| |
| /* Save typing and make code easier to understand */ |
| |
| #define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \ |
| abs((int)((c1).green) - (int)((c2).green)) + \ |
| abs((int)((c1).blue) - (int)((c2).blue))) |
| |
| /* Added to libpng-1.2.6 JB */ |
| #define PNG_ROWBYTES(pixel_bits, width) \ |
| ((pixel_bits) >= 8 ? \ |
| ((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \ |
| (( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) ) |
| |
| /* PNG_OUT_OF_RANGE returns true if value is outside the range |
| * ideal-delta..ideal+delta. Each argument is evaluated twice. |
| * "ideal" and "delta" should be constants, normally simple |
| * integers, "value" a variable. Added to libpng-1.2.6 JB |
| */ |
| #define PNG_OUT_OF_RANGE(value, ideal, delta) \ |
| ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) ) |
| |
| /* Constant strings for known chunk types. If you need to add a chunk, |
| * define the name here, and add an invocation of the macro wherever it's |
| * needed. |
| */ |
| #define PNG_IHDR PNG_CONST png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'} |
| #define PNG_IDAT PNG_CONST png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'} |
| #define PNG_IEND PNG_CONST png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'} |
| #define PNG_PLTE PNG_CONST png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'} |
| #define PNG_bKGD PNG_CONST png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'} |
| #define PNG_cHRM PNG_CONST png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'} |
| #define PNG_gAMA PNG_CONST png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'} |
| #define PNG_hIST PNG_CONST png_byte png_hIST[5] = {104, 73, 83, 84, '\0'} |
| #define PNG_iCCP PNG_CONST png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'} |
| #define PNG_iTXt PNG_CONST png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'} |
| #define PNG_oFFs PNG_CONST png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'} |
| #define PNG_pCAL PNG_CONST png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'} |
| #define PNG_sCAL PNG_CONST png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'} |
| #define PNG_pHYs PNG_CONST png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'} |
| #define PNG_sBIT PNG_CONST png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'} |
| #define PNG_sPLT PNG_CONST png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'} |
| #define PNG_sRGB PNG_CONST png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'} |
| #define PNG_sTER PNG_CONST png_byte png_sTER[5] = {115, 84, 69, 82, '\0'} |
| #define PNG_tEXt PNG_CONST png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'} |
| #define PNG_tIME PNG_CONST png_byte png_tIME[5] = {116, 73, 77, 69, '\0'} |
| #define PNG_tRNS PNG_CONST png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'} |
| #define PNG_zTXt PNG_CONST png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'} |
| |
| |
| /* Inhibit C++ name-mangling for libpng functions but not for system calls. */ |
| #ifdef __cplusplus |
| extern "C" { |
| #endif /* __cplusplus */ |
| |
| /* These functions are used internally in the code. They generally |
| * shouldn't be used unless you are writing code to add or replace some |
| * functionality in libpng. More information about most functions can |
| * be found in the files where the functions are located. |
| */ |
| |
| /* Allocate memory for an internal libpng struct */ |
| PNG_EXTERN png_voidp png_create_struct PNGARG((int type)); |
| |
| /* Free memory from internal libpng struct */ |
| PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr)); |
| |
| PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr |
| malloc_fn, png_voidp mem_ptr)); |
| PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr, |
| png_free_ptr free_fn, png_voidp mem_ptr)); |
| |
| /* Free any memory that info_ptr points to and reset struct. */ |
| PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| |
| /* Function to allocate memory for zlib. PNGAPI is disallowed. */ |
| PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size)); |
| |
| /* Function to free memory for zlib. PNGAPI is disallowed. */ |
| PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr)); |
| |
| /* Next four functions are used internally as callbacks. PNGAPI is required |
| * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. */ |
| |
| PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr, |
| png_bytep data, png_size_t length)); |
| |
| #ifdef PNG_PROGRESSIVE_READ_SUPPORTED |
| PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr, |
| png_bytep buffer, png_size_t length)); |
| #endif |
| |
| PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr, |
| png_bytep data, png_size_t length)); |
| |
| #ifdef PNG_WRITE_FLUSH_SUPPORTED |
| #ifdef PNG_STDIO_SUPPORTED |
| PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr)); |
| #endif |
| #endif |
| |
| /* Reset the CRC variable */ |
| PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr)); |
| |
| /* Write the "data" buffer to whatever output you are using */ |
| PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data, |
| png_size_t length)); |
| |
| /* Read and check the PNG file signature */ |
| PNG_EXTERN void png_read_sig PNGARG((png_structp png_ptr, png_infop info_ptr)); |
| |
| /* Read the chunk header (length + type name) */ |
| PNG_EXTERN png_uint_32 png_read_chunk_header PNGARG((png_structp png_ptr)); |
| |
| /* Read data from whatever input you are using into the "data" buffer */ |
| PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data, |
| png_size_t length)); |
| |
| /* Read bytes into buf, and update png_ptr->crc */ |
| PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf, |
| png_size_t length)); |
| |
| /* Decompress data in a chunk that uses compression */ |
| #if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \ |
| defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) |
| PNG_EXTERN void png_decompress_chunk PNGARG((png_structp png_ptr, |
| int comp_type, png_size_t chunklength, png_size_t prefix_length, |
| png_size_t *data_length)); |
| #endif |
| |
| /* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */ |
| PNG_EXTERN int png_crc_finish PNGARG((png_structp png_ptr, png_uint_32 skip)); |
| |
| /* Read the CRC from the file and compare it to the libpng calculated CRC */ |
| PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr)); |
| |
| /* Calculate the CRC over a section of data. Note that we are only |
| * passing a maximum of 64K on systems that have this as a memory limit, |
| * since this is the maximum buffer size we can specify. |
| */ |
| PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr, |
| png_size_t length)); |
| |
| #ifdef PNG_WRITE_FLUSH_SUPPORTED |
| PNG_EXTERN void png_flush PNGARG((png_structp png_ptr)); |
| #endif |
| |
| /* Write various chunks */ |
| |
| /* Write the IHDR chunk, and update the png_struct with the necessary |
| * information. |
| */ |
| PNG_EXTERN void png_write_IHDR PNGARG((png_structp 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_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette, |
| png_uint_32 num_pal)); |
| |
| PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data, |
| png_size_t length)); |
| |
| PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr)); |
| |
| #ifdef PNG_WRITE_gAMA_SUPPORTED |
| #ifdef PNG_FLOATING_POINT_SUPPORTED |
| PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma)); |
| #endif |
| #ifdef PNG_FIXED_POINT_SUPPORTED |
| PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, |
| png_fixed_point file_gamma)); |
| #endif |
| #endif |
| |
| #ifdef PNG_WRITE_sBIT_SUPPORTED |
| PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit, |
| int color_type)); |
| #endif |
| |
| #ifdef PNG_WRITE_cHRM_SUPPORTED |
| #ifdef PNG_FLOATING_POINT_SUPPORTED |
| PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr, |
| double white_x, double white_y, |
| double red_x, double red_y, double green_x, double green_y, |
| double blue_x, double blue_y)); |
| #endif |
| PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr, |
| png_fixed_point int_white_x, png_fixed_point int_white_y, |
| png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point |
| int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, |
| png_fixed_point int_blue_y)); |
| #endif |
| |
| #ifdef PNG_WRITE_sRGB_SUPPORTED |
| PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr, |
| int intent)); |
| #endif |
| |
| #ifdef PNG_WRITE_iCCP_SUPPORTED |
| PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr, |
| png_charp name, int compression_type, |
| png_charp profile, int proflen)); |
| /* Note to maintainer: profile should be png_bytep */ |
| #endif |
| |
| #ifdef PNG_WRITE_sPLT_SUPPORTED |
| PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr, |
| png_sPLT_tp palette)); |
| #endif |
| |
| #ifdef PNG_WRITE_tRNS_SUPPORTED |
| PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans, |
| png_color_16p values, int number, int color_type)); |
| #endif |
| |
| #ifdef PNG_WRITE_bKGD_SUPPORTED |
| PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr, |
| png_color_16p values, int color_type)); |
| #endif |
| |
| #ifdef PNG_WRITE_hIST_SUPPORTED |
| PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist, |
| int num_hist)); |
| #endif |
| |
| #if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \ |
| defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED) |
| PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr, |
| png_charp key, png_charpp new_key)); |
| #endif |
| |
| #ifdef PNG_WRITE_tEXt_SUPPORTED |
| PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key, |
| png_charp text, png_size_t text_len)); |
| #endif |
| |
| #ifdef PNG_WRITE_zTXt_SUPPORTED |
| PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key, |
| png_charp text, png_size_t text_len, int compression)); |
| #endif |
| |
| #ifdef PNG_WRITE_iTXt_SUPPORTED |
| PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr, |
| int compression, png_charp key, png_charp lang, png_charp lang_key, |
| png_charp text)); |
| #endif |
| |
| #ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */ |
| PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr, |
| png_infop info_ptr, png_textp text_ptr, int num_text)); |
| #endif |
| |
| #ifdef PNG_WRITE_oFFs_SUPPORTED |
| PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr, |
| png_int_32 x_offset, png_int_32 y_offset, int unit_type)); |
| #endif |
| |
| #ifdef PNG_WRITE_pCAL_SUPPORTED |
| PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose, |
| png_int_32 X0, png_int_32 X1, int type, int nparams, |
| png_charp units, png_charpp params)); |
| #endif |
| |
| #ifdef PNG_WRITE_pHYs_SUPPORTED |
| PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr, |
| png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, |
| int unit_type)); |
| #endif |
| |
| #ifdef PNG_WRITE_tIME_SUPPORTED |
| PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr, |
| png_timep mod_time)); |
| #endif |
| |
| #ifdef PNG_WRITE_sCAL_SUPPORTED |
| #if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED) |
| PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr, |
| int unit, double width, double height)); |
| #else |
| #ifdef PNG_FIXED_POINT_SUPPORTED |
| PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr, |
| int unit, png_charp width, png_charp height)); |
| #endif |
| #endif |
| #endif |
| |
| /* Called when finished processing a row of data */ |
| PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr)); |
| |
| /* Internal use only. Called before first row of data */ |
| PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr)); |
| |
| #ifdef PNG_READ_GAMMA_SUPPORTED |
| PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr, |
| png_byte bit_depth)); |
| #endif |
| |
| /* Combine a row of data, dealing with alpha, etc. if requested */ |
| PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row, |
| int mask)); |
| |
| #ifdef PNG_READ_INTERLACING_SUPPORTED |
| /* Expand an interlaced row */ |
| /* OLD pre-1.0.9 interface: |
| PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info, |
| png_bytep row, int pass, png_uint_32 transformations)); |
| */ |
| PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr)); |
| #endif |
| |
| /* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */ |
| |
| #ifdef PNG_WRITE_INTERLACING_SUPPORTED |
| /* Grab pixels out of a row for an interlaced pass */ |
| PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info, |
| png_bytep row, int pass)); |
| #endif |
| |
| /* Unfilter a row */ |
| PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr, |
| png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter)); |
| |
| /* Choose the best filter to use and filter the row data */ |
| PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr, |
| png_row_infop row_info)); |
| |
| /* Write out the filtered row. */ |
| PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr, |
| png_bytep filtered_row)); |
| /* Finish a row while reading, dealing with interlacing passes, etc. */ |
| PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr)); |
| |
| /* Initialize the row buffers, etc. */ |
| PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr)); |
| /* Optional call to update the users info structure */ |
| PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| |
| /* These are the functions that do the transformations */ |
| #ifdef PNG_READ_FILLER_SUPPORTED |
| PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info, |
| png_bytep row, png_uint_32 filler, png_uint_32 flags)); |
| #endif |
| |
| #ifdef PNG_READ_SWAP_ALPHA_SUPPORTED |
| PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info, |
| png_bytep row)); |
| #endif |
| |
| #ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED |
| PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info, |
| png_bytep row)); |
| #endif |
| |
| #ifdef PNG_READ_INVERT_ALPHA_SUPPORTED |
| PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info, |
| png_bytep row)); |
| #endif |
| |
| #ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED |
| PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info, |
| png_bytep row)); |
| #endif |
| |
| #if defined(PNG_WRITE_FILLER_SUPPORTED) || \ |
| defined(PNG_READ_STRIP_ALPHA_SUPPORTED) |
| PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info, |
| png_bytep row, png_uint_32 flags)); |
| #endif |
| |
| #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) |
| PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row)); |
| #endif |
| |
| #if defined(PNG_READ_PACKSWAP_SUPPORTED) || \ |
| defined(PNG_WRITE_PACKSWAP_SUPPORTED) |
| PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row)); |
| #endif |
| |
| #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED |
| PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop |
| row_info, png_bytep row)); |
| #endif |
| |
| #ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED |
| PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info, |
| png_bytep row)); |
| #endif |
| |
| #ifdef PNG_READ_PACK_SUPPORTED |
| PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, png_bytep row)); |
| #endif |
| |
| #ifdef PNG_READ_SHIFT_SUPPORTED |
| PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row, |
| png_color_8p sig_bits)); |
| #endif |
| |
| #if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) |
| PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row)); |
| #endif |
| |
| #ifdef PNG_READ_16_TO_8_SUPPORTED |
| PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row)); |
| #endif |
| |
| #ifdef PNG_READ_QUANTIZE_SUPPORTED |
| PNG_EXTERN void png_do_quantize PNGARG((png_row_infop row_info, |
| png_bytep row, png_bytep palette_lookup, png_bytep quantize_lookup)); |
| |
| # ifdef PNG_CORRECT_PALETTE_SUPPORTED |
| PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr, |
| png_colorp palette, int num_palette)); |
| # endif |
| #endif |
| |
| #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) |
| PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row)); |
| #endif |
| |
| #ifdef PNG_WRITE_PACK_SUPPORTED |
| PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info, |
| png_bytep row, png_uint_32 bit_depth)); |
| #endif |
| |
| #ifdef PNG_WRITE_SHIFT_SUPPORTED |
| PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row, |
| png_color_8p bit_depth)); |
| #endif |
| |
| #ifdef PNG_READ_BACKGROUND_SUPPORTED |
| #ifdef PNG_READ_GAMMA_SUPPORTED |
| PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, |
| png_color_16p trans_color, png_color_16p background, |
| png_color_16p background_1, |
| png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1, |
| png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1, |
| png_uint_16pp gamma_16_to_1, int gamma_shift)); |
| #else |
| PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, |
| png_color_16p trans_color, png_color_16p background)); |
| #endif |
| #endif |
| |
| #ifdef PNG_READ_GAMMA_SUPPORTED |
| PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row, |
| png_bytep gamma_table, png_uint_16pp gamma_16_table, |
| int gamma_shift)); |
| #endif |
| |
| #ifdef PNG_READ_EXPAND_SUPPORTED |
| PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info, |
| png_bytep row, png_colorp palette, png_bytep trans, int num_trans)); |
| PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info, |
| png_bytep row, png_color_16p trans_value)); |
| #endif |
| |
| /* The following decodes the appropriate chunks, and does error correction, |
| * then calls the appropriate callback for the chunk if it is valid. |
| */ |
| |
| /* Decode the IHDR chunk */ |
| PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| |
| #ifdef PNG_READ_bKGD_SUPPORTED |
| PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_cHRM_SUPPORTED |
| PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_gAMA_SUPPORTED |
| PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_hIST_SUPPORTED |
| PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_iCCP_SUPPORTED |
| PNG_EXTERN void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif /* PNG_READ_iCCP_SUPPORTED */ |
| |
| #ifdef PNG_READ_iTXt_SUPPORTED |
| PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_oFFs_SUPPORTED |
| PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_pCAL_SUPPORTED |
| PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_pHYs_SUPPORTED |
| PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_sBIT_SUPPORTED |
| PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_sCAL_SUPPORTED |
| PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_sPLT_SUPPORTED |
| PNG_EXTERN void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif /* PNG_READ_sPLT_SUPPORTED */ |
| |
| #ifdef PNG_READ_sRGB_SUPPORTED |
| PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_tEXt_SUPPORTED |
| PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_tIME_SUPPORTED |
| PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_tRNS_SUPPORTED |
| PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| #ifdef PNG_READ_zTXt_SUPPORTED |
| PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_uint_32 length)); |
| #endif |
| |
| PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr, |
| png_infop info_ptr, png_uint_32 length)); |
| |
| PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr, |
| png_bytep chunk_name)); |
| |
| PNG_EXTERN void png_check_chunk_length PNGARG((png_structp png_ptr, |
| png_uint_32 chunk_length)); |
| |
| /* Handle the transformations for reading and writing */ |
| PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr)); |
| PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr)); |
| |
| PNG_EXTERN void png_init_read_transformations PNGARG((png_structp png_ptr)); |
| |
| #ifdef PNG_PROGRESSIVE_READ_SUPPORTED |
| PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr)); |
| PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr, |
| png_uint_32 length)); |
| PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr)); |
| PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr)); |
| PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr, |
| png_bytep buffer, png_size_t buffer_length)); |
| PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr)); |
| PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr, |
| png_bytep buffer, png_size_t buffer_length)); |
| PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr)); |
| PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr, |
| png_infop info_ptr, png_uint_32 length)); |
| PNG_EXTERN void png_push_have_info PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| PNG_EXTERN void png_push_have_end PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| PNG_EXTERN void png_push_have_row PNGARG((png_structp png_ptr, png_bytep row)); |
| PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr)); |
| #ifdef PNG_READ_tEXt_SUPPORTED |
| PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr, |
| png_infop info_ptr, png_uint_32 length)); |
| PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| #endif |
| #ifdef PNG_READ_zTXt_SUPPORTED |
| PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr, |
| png_infop info_ptr, png_uint_32 length)); |
| PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| #endif |
| #ifdef PNG_READ_iTXt_SUPPORTED |
| PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr, |
| png_infop info_ptr, png_uint_32 length)); |
| PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr, |
| png_infop info_ptr)); |
| #endif |
| |
| #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ |
| |
| #ifdef PNG_MNG_FEATURES_SUPPORTED |
| PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info, |
| png_bytep row)); |
| PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info, |
| png_bytep row)); |
| #endif |
| |
| /* Added at libpng version 1.4.0 */ |
| #ifdef PNG_cHRM_SUPPORTED |
| PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr, |
| png_fixed_point int_white_x, png_fixed_point int_white_y, |
| png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point |
| int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, |
| png_fixed_point int_blue_y)); |
| #endif |
| |
| #ifdef PNG_cHRM_SUPPORTED |
| #ifdef PNG_CHECK_cHRM_SUPPORTED |
| /* Added at libpng version 1.2.34 and 1.4.0 */ |
| PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2, |
| unsigned long *hi_product, unsigned long *lo_product)); |
| #endif |
| #endif |
| |
| /* Added at libpng version 1.4.0 */ |
| PNG_EXTERN void png_check_IHDR PNGARG((png_structp 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)); |
| |
| /* Free all memory used by the read (old method - NOT DLL EXPORTED) */ |
| PNG_EXTERN void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr, |
| png_infop end_info_ptr)); |
| |
| /* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */ |
| PNG_EXTERN void png_write_destroy PNGARG((png_structp png_ptr)); |
| |
| #ifdef USE_FAR_KEYWORD /* memory model conversion function */ |
| PNG_EXTERN void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr, |
| int check)); |
| #endif /* USE_FAR_KEYWORD */ |
| |
| /* Define PNG_DEBUG at compile time for debugging information. Higher |
| * numbers for PNG_DEBUG mean more debugging information. This has |
| * only been added since version 0.95 so it is not implemented throughout |
| * libpng yet, but more support will be added as needed. |
| */ |
| #ifdef PNG_DEBUG |
| #if (PNG_DEBUG > 0) |
| #if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER) |
| #include <crtdbg.h> |
| #if (PNG_DEBUG > 1) |
| #ifndef _DEBUG |
| # define _DEBUG |
| #endif |
| #ifndef png_debug |
| #define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE) |
| #endif |
| #ifndef png_debug1 |
| #define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1) |
| #endif |
| #ifndef png_debug2 |
| #define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2) |
| #endif |
| #endif |
| #else /* PNG_DEBUG_FILE || !_MSC_VER */ |
| #ifndef PNG_DEBUG_FILE |
| #define PNG_DEBUG_FILE stderr |
| #endif /* PNG_DEBUG_FILE */ |
| |
| #if (PNG_DEBUG > 1) |
| /* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on |
| * non-ISO compilers |
| */ |
| # ifdef __STDC__ |
| # ifndef png_debug |
| # define png_debug(l,m) \ |
| { \ |
| int num_tabs=l; \ |
| fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ |
| (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \ |
| } |
| # endif |
| # ifndef png_debug1 |
| # define png_debug1(l,m,p1) \ |
| { \ |
| int num_tabs=l; \ |
| fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ |
| (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \ |
| } |
| # endif |
| # ifndef png_debug2 |
| # define png_debug2(l,m,p1,p2) \ |
| { \ |
| int num_tabs=l; \ |
| fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ |
| (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \ |
| } |
| # endif |
| # else /* __STDC __ */ |
| # ifndef png_debug |
| # define png_debug(l,m) \ |
| { \ |
| int num_tabs=l; \ |
| char format[256]; \ |
| snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ |
| (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ |
| m,PNG_STRING_NEWLINE); \ |
| fprintf(PNG_DEBUG_FILE,format); \ |
| } |
| # endif |
| # ifndef png_debug1 |
| # define png_debug1(l,m,p1) \ |
| { \ |
| int num_tabs=l; \ |
| char format[256]; \ |
| snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ |
| (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ |
| m,PNG_STRING_NEWLINE); \ |
| fprintf(PNG_DEBUG_FILE,format,p1); \ |
| } |
| # endif |
| # ifndef png_debug2 |
| # define png_debug2(l,m,p1,p2) \ |
| { \ |
| int num_tabs=l; \ |
| char format[256]; \ |
| snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ |
| (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ |
| m,PNG_STRING_NEWLINE); \ |
| fprintf(PNG_DEBUG_FILE,format,p1,p2); \ |
| } |
| # endif |
| # endif /* __STDC __ */ |
| #endif /* (PNG_DEBUG > 1) */ |
| |
| #endif /* _MSC_VER */ |
| #endif /* (PNG_DEBUG > 0) */ |
| #endif /* PNG_DEBUG */ |
| #ifndef png_debug |
| #define png_debug(l, m) |
| #endif |
| #ifndef png_debug1 |
| #define png_debug1(l, m, p1) |
| #endif |
| #ifndef png_debug2 |
| #define png_debug2(l, m, p1, p2) |
| #endif |
| |
| /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* PNG_VERSION_INFO_ONLY */ |
| #endif /* PNGPRIV_H */ |
