algif.h

lua脚本语言调用allegro游戏程序库的接口-跨平台

#ifndef _GIF_H_
#define _GIF_H_

#include <allegro.h>

#ifdef __cplusplus
extern "C" {
#endif

#define DAT_GIF  DAT_ID('G','I','F',' ')

typedef struct GIF_ANIMATION GIF_ANIMATION;
typedef struct GIF_FRAME GIF_FRAME;
typedef struct GIF_PALETTE GIF_PALETTE;

struct GIF_PALETTE
{
    int colors_count;
    RGB colors[256];
};

struct GIF_ANIMATION
{
    int width, height;
    int frames_count;
    int background_index;
    int loop; /* -1 = no, 0 = forever, 1..65535 = that many times */
    GIF_PALETTE palette;
    GIF_FRAME *frames;

    BITMAP *store;
};

struct GIF_FRAME
{
    BITMAP *bitmap_8_bit;
    GIF_PALETTE palette;
    int xoff, yoff;
    int duration;               /* in 1/100th seconds */
    int disposal_method;        /* 0 = don't care, 1 = keep, 2 = background, 3 = previous */
    int transparent_index;
};

/* Simple use. */
void           algif_init                  (void);

int            algif_load_animation        (char const *filename, BITMAP ***frames, int **durations);
int            algif_load_animation_pf     (PACKFILE *file, BITMAP ***frames, int **durations);

BITMAP*        load_gif                    (AL_CONST char *filename, RGB *pal);
BITMAP*        load_gif_pf                 (PACKFILE *f, RGB *pal);

int            save_gif                    (AL_CONST char *filename, BITMAP *bmp, AL_CONST RGB *pal);
int            save_gif_pf                 (PACKFILE *file, BITMAP *bmp, AL_CONST PALETTE pal);

/* Advanced use. */
GIF_ANIMATION* load_gif_object_pf          (PACKFILE * file, long size);

GIF_ANIMATION* algif_load_raw_animation    (char const *filename);

void           algif_render_frame          (GIF_ANIMATION *gif, BITMAP *bitmap, int frame, int xpos, int ypos);
GIF_ANIMATION* algif_create_raw_animation  (int frames_count);

int            algif_save_raw_animation_pf (PACKFILE *file, GIF_ANIMATION *gif);
int            algif_save_raw_animation    (const char *filename, GIF_ANIMATION *gif);

void           algif_destroy_raw_animation (GIF_ANIMATION *gif);

#ifdef __cplusplus
}
#endif

#endif