mirror of
https://git.code.sf.net/p/libpng/code.git
synced 2025-07-10 18:04:09 +02:00
967 lines
35 KiB
C
967 lines
35 KiB
C
|
|
/* pngpriv.h - private declarations for use inside libpng
|
|
*
|
|
* libpng version 1.4.13beta04 - November 28, 2013
|
|
* For conditions of distribution and use, see copyright notice in png.h
|
|
* Copyright (c) 1998-2011 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));
|
|
|
|
/* 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 */
|