#ifndef BMP_H_
#define BMP_H_

#include "mpp_types.h"

#define BYTE_ALIGN(x, byte) (((x) + ((byte) - 1))&(~((byte) - 1)))

#pragma pack(push, 1)
struct bmp_header {
    unsigned short type;
    unsigned int size;
    unsigned short reserved1;
    unsigned short reserved2;
    unsigned int offset;

    unsigned int head_size;
    int width;
    int height;
    unsigned short planes;
    unsigned short bit_count;
    unsigned int compression;
    unsigned int size_image;
    int x_meter;
    int y_meter;
    unsigned int clr_used;
    unsigned int clr_important;
};
#pragma pack(pop)

enum bmp_pixel_format{
    UNKNOWN_FORMAT = 100,
    MONOCHROME_FORMAT,
    INDEXED_4BIT_FORMAT,
    RLE_4BIT_FORMAT,
    INDEXED_8BIT_FORMAT,
    RLE_8BIT_FORMAT,
    BITFIELDS_FORMAT,
    RGB_565_FORMAT = 14,
    BGR_FORMAT = 9,
    /* here is big-endian */
    BGRA_FORMAT = 3,
    ARGB_FORMAT = 0
};

int bmp_open(char * path, struct bmp_header *bmp_header);
int bmp_read(int bmp_fd, void *buffer, struct bmp_header *bmp_header);
enum mpp_pixel_format bmp_get_fmt(struct bmp_header *bmp_header);
void bmp_close(int fd);

#endif