mirror of
https://github.com/aseprite/aseprite.git
synced 2024-12-27 21:19:18 +00:00
76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
/* loadpng.h */
|
|
/* This file is hereby placed in the public domain. */
|
|
#ifndef _included_loadpng_h_
|
|
#define _included_loadpng_h_
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
|
|
/* Overkill :-) */
|
|
#define LOADPNG_VERSION 1
|
|
#define LOADPNG_SUBVERSION 5
|
|
#define LOADPNG_VERSIONSTR "1.5"
|
|
|
|
|
|
/* _png_screen_gamma is slightly overloaded (sorry):
|
|
*
|
|
* A value of 0.0 means: Don't do any gamma correction in load_png()
|
|
* and load_memory_png(). This meaning was introduced in v1.4.
|
|
*
|
|
* A value of -1.0 means: Use the value from the environment variable
|
|
* SCREEN_GAMMA (if available), otherwise fallback to a value of 2.2
|
|
* (a good guess for PC monitors, and the value for sRGB colourspace).
|
|
* This is the default.
|
|
*
|
|
* Otherwise, the value of _png_screen_gamma is taken as-is.
|
|
*/
|
|
extern double _png_screen_gamma;
|
|
|
|
|
|
/* Choose zlib compression level for saving file.
|
|
* Default is Z_BEST_COMPRESSION.
|
|
*/
|
|
extern int _png_compression_level;
|
|
|
|
|
|
/* Load a PNG from disk. */
|
|
extern BITMAP *load_png(AL_CONST char *filename, RGB *pal);
|
|
|
|
/* Load a PNG from some place. */
|
|
extern BITMAP *load_png_pf(PACKFILE *fp, RGB *pal);
|
|
|
|
/* Load a PNG from memory. */
|
|
extern BITMAP *load_memory_png(AL_CONST void *buffer, int buffer_size, RGB *pal);
|
|
|
|
/* Save a bitmap to disk in PNG format. */
|
|
extern int save_png(AL_CONST char *filename, BITMAP *bmp, AL_CONST RGB *pal);
|
|
|
|
/* Adds `PNG' to Allegro's internal file type table.
|
|
* You can then just use load_bitmap and save_bitmap as usual.
|
|
*/
|
|
extern void register_png_file_type(void);
|
|
|
|
/* Register an datafile type ID with Allegro, so that when an object
|
|
* with that type ID is encountered while loading a datafile, that
|
|
* object will be loaded as a PNG file.
|
|
*/
|
|
extern void register_png_datafile_object(int id);
|
|
|
|
/* This is supposed to resemble jpgalleg_init in JPGalleg 2.0, just in
|
|
* case you are lazier than lazy. It contains these 3 lines of code:
|
|
* register_png_datafile_object(DAT_ID('P','N','G',' '));
|
|
* register_png_file_type();
|
|
* return 0;
|
|
*/
|
|
extern int loadpng_init(void);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _included_loadpng_h */
|