#ifndef __DATA_H__
#define __DATA_H__

#include <stdint.h>

#include "bmlist.h"

typedef struct {
	uint8_t header[6]; // magic
	uint8_t flash;
	uint8_t marquee;
	uint8_t modes[8];

	uint16_t sizes[8]; // big endian

	uint8_t pad6[6];
	uint8_t timestamp[6];
	uint8_t pad4[4];

	uint8_t separator[16];

	uint8_t *bitmapdata;
} data_legacy_t;

#define LEGACY_TRANSFER_WIDTH (16)
#define LEGACY_HEADER_SIZE (sizeof(data_legacy_t) - sizeof(uint8_t *))
#define LEGACY_GET_SPEED(mode) ((mode) >> 4)
#define LEGACY_GET_ANIMATION(mode) ((mode) & 0x0F)

enum ANIMATION_MODES {
	LEFT = 0,
	RIGHT,
	UP,
	DOWN,
	FIXED,
	ANIMATION,
	SNOWFLAKE,
	PICTURE,
	LASER,
};

static inline uint16_t bswap16(uint16_t i) {
	return (i >> 8) | (i << 8);
}
uint32_t bigendian16_sum(uint16_t *s, int len);

uint32_t data_flatSave(uint8_t *data, uint32_t len);
uint16_t data_flash2newmem(uint8_t **chunk, uint32_t n);

data_legacy_t *data_get_header(int read_anyway);

void chunk2buffer(uint8_t *chunk, uint16_t size, uint16_t *buf);
void chunk2bm(uint8_t *chunk, uint16_t size, bm_t *bm);

bm_t *chunk2newbm(uint8_t *chunk, uint16_t size);
bm_t *flash2newbm(uint32_t n);

#endif /* __DATA_H__ */