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#ifndef MEH_H
#define MEH_H MEH_H
#include <stdio.h>
struct image;
struct imageformat{
struct image *(*open)(FILE *);
void (*prep)(struct image *);
int (*read)(struct image *);
void (*close)(struct image *);
};
typedef enum{
NONE = 0,
LOADED = 1,
SLOWLOADED = 2,
SCALED = 4,
SLOWSCALED = 8,
DRAWN = 16
} imgstate;
struct image{
unsigned char *buf;
unsigned int bufwidth, bufheight;
struct imageformat *fmt;
imgstate state;
int idx;
void *backend;
};
/* backend */
void backend_init();
void backend_free(struct image *img);
void backend_setaspect(unsigned int w, unsigned int h);
void backend_prepare(struct image *img, unsigned int width, unsigned int height, int fast);
void backend_draw(struct image *img, unsigned int width, unsigned int height);
void backend_run();
/* key actions for backend */
void key_reload();
void key_next();
void key_prev();
void key_quit();
void key_action();
/* callbacks from backend */
int setup_fds(fd_set *fds);
int process_fds(fd_set *fds);
int process_idle();
#ifdef TDEBUG
#define TDEBUG_START \
struct timeval t0;\
struct timeval t1;\
gettimeofday(&t0, NULL);
#define TDEBUG_END(x) \
gettimeofday(&t1, NULL); \
printf("%s: %li e2 us\n", (x), ((t1.tv_sec - t0.tv_sec) * 1000000 + t1.tv_usec - t0.tv_usec) / 100);
#else
#define TDEBUG_START
#define TDEBUG_END(x)
#endif
/* Supported Formats */
extern struct imageformat libjpeg;
extern struct imageformat giflib;
extern struct imageformat libpng;
extern struct imageformat bmp;
extern struct imageformat netpbm;
extern struct imageformat imagemagick;
extern int width, height;
extern struct image *curimg;
#endif
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