SynGame/allegro/include/allegro5/internal/aintern_bitmap.h

142 lines
4.1 KiB
C

#ifndef __al_included_allegro5_aintern_bitmap_h
#define __al_included_allegro5_aintern_bitmap_h
#include "allegro5/bitmap.h"
#include "allegro5/bitmap_lock.h"
#include "allegro5/display.h"
#include "allegro5/transformations.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct ALLEGRO_BITMAP_INTERFACE ALLEGRO_BITMAP_INTERFACE;
struct ALLEGRO_BITMAP
{
ALLEGRO_BITMAP_INTERFACE *vt;
ALLEGRO_DISPLAY *display;
int format;
int flags;
int w, h;
/*
* The number of bytes between a pixel at (x,y) and (x,y+1).
* This is larger than w * pixel_size if there is padding between lines.
*/
int pitch;
/*
* clip left, right, top, bottom
* Clip anything outside of this. cr/cb are exclusive, that is (0, 0, 1, 1)
* is the single pixel spawning a rectangle from floating point 0/0 to 1/1 -
* or in other words, the single pixel 0/0.
*
* There is always confusion as to whether cr/cb are exclusive, leading to
* subtle bugs. The suffixes are supposed to help with that.
*/
int cl;
int cr_excl;
int ct;
int cb_excl;
/*
* Locking info.
*
* locked - locked or not?
* lock_x/y - top left of the locked region
* lock_w/h - width and height of the locked region
* lock_flags - flags the region was locked with
* locked_region - a copy of the locked rectangle
*/
bool locked;
int lock_x;
int lock_y;
int lock_w;
int lock_h;
int lock_flags;
ALLEGRO_LOCKED_REGION locked_region;
/* Transformation for this bitmap */
ALLEGRO_TRANSFORM transform;
/* Info for sub-bitmaps */
ALLEGRO_BITMAP *parent;
int xofs;
int yofs;
/* A memory copy of the bitmap data. May be NULL for an empty bitmap. */
unsigned char *memory;
/* Size of the bitmap object. Used only by functions to convert bitmap
storage type. Can be missleading. */
size_t size;
bool preserve_texture;
};
struct ALLEGRO_BITMAP_INTERFACE
{
int id;
void (*draw_bitmap_region)(ALLEGRO_BITMAP *bitmap,
ALLEGRO_COLOR tint,float sx, float sy,
float sw, float sh, int flags);
/* After the memory-copy of the bitmap has been modified, need to call this
* to update the display-specific copy. E.g. with an OpenGL driver, this
* might create/update a texture. Returns false on failure.
*/
bool (*upload_bitmap)(ALLEGRO_BITMAP *bitmap);
/* If the display version of the bitmap has been modified, use this to update
* the memory copy accordingly. E.g. with an OpenGL driver, this might
* read the contents of an associated texture.
*/
void (*update_clipping_rectangle)(ALLEGRO_BITMAP *bitmap);
void (*destroy_bitmap)(ALLEGRO_BITMAP *bitmap);
ALLEGRO_LOCKED_REGION * (*lock_region)(ALLEGRO_BITMAP *bitmap,
int x, int y, int w, int h, int format,
int flags);
void (*unlock_region)(ALLEGRO_BITMAP *bitmap);
};
extern void (*_al_convert_funcs[ALLEGRO_NUM_PIXEL_FORMATS]
[ALLEGRO_NUM_PIXEL_FORMATS])(void *, int, void *, int,
int, int, int, int, int, int);
/* Bitmap conversion */
void _al_convert_bitmap_data(
void *src, int src_format, int src_pitch,
void *dst, int dst_format, int dst_pitch,
int sx, int sy, int dx, int dy,
int width, int height);
void _al_convert_to_memory_bitmap(ALLEGRO_BITMAP *bitmap);
void _al_convert_to_display_bitmap(ALLEGRO_BITMAP *bitmap);
#ifdef ALLEGRO_GP2XWIZ
/* Optimized blitters */
void _al_draw_bitmap_region_optimized_rgba_4444_to_rgb_565(
ALLEGRO_BITMAP *src, int sx, int sy, int sw, int sh,
ALLEGRO_BITMAP *dest, int dx, int dy, int flags);
void _al_draw_bitmap_region_optimized_rgb_565_to_rgb_565(
ALLEGRO_BITMAP *src, int sx, int sy, int sw, int sh,
ALLEGRO_BITMAP *dest, int dx, int dy, int flags);
void _al_draw_bitmap_region_optimized_rgba_4444_to_rgba_4444(
ALLEGRO_BITMAP *src, int sx, int sy, int sw, int sh,
ALLEGRO_BITMAP *dest, int dx, int dy, int flags);
#endif
/* Simple bitmap drawing */
/* _al_put_pixel was inadvertently exported in 5.0.x releases. */
AL_FUNC(void, _al_put_pixel, (ALLEGRO_BITMAP *bitmap, int x, int y, ALLEGRO_COLOR color));
/* Bitmap I/O */
void _al_init_iio_table(void);
#ifdef __cplusplus
}
#endif
#endif