#include <allegro.h>

/* Map from dest pixel to source pixels */
typedef struct map_elem_t {
	int x, y;
	int a1, a2, a3, a4; /* ul, ur, ll, lr */
} map_elem_t;
typedef struct map_t {
	int w, h;
	map_elem_t* e;
} map_t;

/* Map from intensity to text character */
typedef int font_t;

/* misc.c */
extern void generate_palette(PALETTE pal);

/* permute.c */
extern map_t* init_permutation(int width, int height);
extern void cleanup_permutation(map_t* map);
extern void permute_bmp(map_t* map, BITMAP* victim, BITMAP* buffer);

/* bmp2txt.c */
extern font_t* init_bmp2txt(void);
extern void cleanup_bmp2txt(font_t* font);
extern void asciify_bmp(font_t* font, BITMAP* bmp);