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#ifndef ROSPRITE_H
#define ROSPRITE_H
#include <stdint.h>
#include <stdio.h>
#include <stdbool.h>
typedef enum { ROSPRITE_OK, ROSPRITE_NOMEM, ROSPRITE_EOF, ROSPRITE_BADMODE } rosprite_error;
typedef enum { rosprite_rgb, rosprite_cmyk } rosprite_color_model;
typedef int (*reader)(uint8_t* buf, size_t count, void* ctx);
struct rosprite_file_context;
struct rosprite_area {
uint32_t extension_size; /* size of extension_words in bytes */
uint8_t* extension_words;
uint32_t sprite_count;
struct rosprite** sprites; /* array of length sprite_count */
};
struct rosprite_mode {
uint32_t colorbpp;
/* maskbpp denotes the amount of alpha bpp used
* while mask_width is the bits used to store the mask.
* Old modes have the same mask_width as their colorbpp, but the value
* is always all-zeroes or all-ones.
* New modes can have 1bpp or 8bpp masks
*/
uint32_t maskbpp;
uint32_t mask_width; /* in pixels */
uint32_t xdpi;
uint32_t ydpi;
rosprite_color_model color_model;
};
struct rosprite_palette {
uint32_t size; /* in number of entries (each entry is a word) */
uint32_t* palette;
};
struct rosprite {
unsigned char name[13]; /* last byte for 0 terminator */
struct rosprite_mode mode;
bool has_mask;
bool has_palette;
uint32_t palettesize; /* in number of entries (each entry is a word) */
uint32_t* palette;
uint32_t width; /* width in pixels */
uint32_t height; /* height in pixels */
uint32_t* image; /* image data in 0xRRGGBBAA words */
};
struct rosprite_file_context;
rosprite_error rosprite_create_file_context(FILE* f, struct rosprite_file_context** ctx);
void rosprite_destroy_file_context(struct rosprite_file_context* ctx);
int rosprite_file_reader(uint8_t* buf, size_t count, void* ctx);
struct rosprite_mem_context;
rosprite_error rosprite_create_mem_context(uint8_t* p, unsigned long total_size, struct rosprite_mem_context** result);
void rosprite_destroy_mem_context(struct rosprite_mem_context* ctx);
int rosprite_mem_reader(uint8_t* buf, size_t count, void* ctx);
rosprite_error rosprite_load(reader reader, void* ctx, struct rosprite_area** result);
void rosprite_destroy_sprite_area(struct rosprite_area *);
rosprite_error rosprite_load_palette(reader reader, void* ctx, struct rosprite_palette** result);
void rosprite_destroy_palette(struct rosprite_palette *);
#endif
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