pngformat.c File Reference
Saving and loading of PNG file format. More...
#include <png.h>#include <stdlib.h>#include <string.h>#include <assert.h>#include <setjmp.h>#include "loadsave.h"#include "loadsavefuncs.h"#include "io.h"#include "misc.h"#include "gfx2log.h"
Include dependency graph for pngformat.c:
Data Structures | |
| struct | PNG_memory_buffer |
| Private structure used in PNG_memory_read() and PNG_memory_write() More... | |
Macros | |
| #define | PNG_HAVE_PLTE 0x02 |
| #define | png_set_expand_gray_1_2_4_to_8(x) png_set_gray_1_2_4_to_8(x) |
| #define | png_get_rowbytes(png_ptr, info_ptr) ((info_ptr)->rowbytes) |
| #define | png_get_image_width(png_ptr, info_ptr) ((info_ptr)->width) |
| #define | png_get_image_height(png_ptr, info_ptr) ((info_ptr)->height) |
| #define | png_get_bit_depth(png_ptr, info_ptr) ((info_ptr)->bit_depth) |
| #define | png_get_color_type(png_ptr, info_ptr) ((info_ptr)->color_type) |
| #define | png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) |
| #define | MIN(a, b) ((a)<(b)?(a):(b)) |
Functions | |
| void | Test_PNG (T_IO_Context *context, FILE *file) |
| Test for PNG format. More... | |
| static int | PNG_read_unknown_chunk (png_structp ptr, png_unknown_chunkp chunk) |
| Callback to handle our private chunks. More... | |
| static void | PNG_memory_read (png_structp png_ptr, png_bytep p, png_size_t count) |
| read from memory buffer More... | |
| void | Load_PNG_Sub (T_IO_Context *context, FILE *file, const char *memory_buffer, unsigned long memory_buffer_size) |
| Read PNG format file. More... | |
| void | Load_PNG (T_IO_Context *context) |
| Read PNG format files. More... | |
| static void | PNG_memory_write (png_structp png_ptr, png_bytep p, png_size_t count) |
| Write to memory buffer. More... | |
| static void | PNG_memory_flush (png_structp png_ptr) |
| do nothing More... | |
| void | Save_PNG_Sub (T_IO_Context *context, FILE *file, char **buffer, unsigned long *buffer_size) |
| Save a PNG to file or memory. More... | |
| void | Save_PNG (T_IO_Context *context) |
| Save a PNG file. More... | |
Detailed Description
Saving and loading of PNG file format.
Macro Definition Documentation
◆ PNG_HAVE_PLTE
| #define PNG_HAVE_PLTE 0x02 |
◆ png_set_expand_gray_1_2_4_to_8
| #define png_set_expand_gray_1_2_4_to_8 | ( | x | ) | png_set_gray_1_2_4_to_8(x) |
◆ png_get_rowbytes
| #define png_get_rowbytes | ( | png_ptr, | |
| info_ptr | |||
| ) | ((info_ptr)->rowbytes) |
◆ png_get_image_width
| #define png_get_image_width | ( | png_ptr, | |
| info_ptr | |||
| ) | ((info_ptr)->width) |
◆ png_get_image_height
| #define png_get_image_height | ( | png_ptr, | |
| info_ptr | |||
| ) | ((info_ptr)->height) |
◆ png_get_bit_depth
| #define png_get_bit_depth | ( | png_ptr, | |
| info_ptr | |||
| ) | ((info_ptr)->bit_depth) |
◆ png_get_color_type
| #define png_get_color_type | ( | png_ptr, | |
| info_ptr | |||
| ) | ((info_ptr)->color_type) |
◆ png_jmpbuf
| #define png_jmpbuf | ( | png_ptr | ) | ((png_ptr)->jmpbuf) |
◆ MIN
| #define MIN | ( | a, | |
| b | |||
| ) | ((a)<(b)?(a):(b)) |
