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/*
* Copyright (C) 2014 Olivier Gayot <duskcoder@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef BMP_H
#define BMP_H
#include <endian.h>
#include <stdint.h>
struct packed_bmp_header {
uint16_t magic;
uint32_t bmp_size;
uint16_t reserved;
uint16_t reserved2;
uint32_t data_offset;
} __attribute__((packed));
struct bitmap {
uint32_t size;
uint32_t data_offset;
uint32_t width;
uint32_t height;
uint16_t bpp;
};
/* Windows BITMAPINFOHEADER */
struct bitmap_info_header {
uint32_t header_size;
uint32_t bmp_width;
uint32_t bmp_height;
uint16_t planes;
uint16_t bpp;
uint32_t compression;
uint32_t img_size;
uint32_t horizontal_res;
uint32_t vertical_res;
uint32_t palette;
uint32_t important_colors;
} __attribute((packed));
enum {
#if __BYTE_ORDER == __BIG_ENDIAN
BMP_MAGIC_BM = 0x424D,
BMP_MAGIC_BA = 0x4241,
BMP_MAGIC_CI = 0x4349,
BMP_MAGIC_CP = 0x4350,
BMP_MAGIC_IC = 0x4943,
BMP_MAGIC_PT = 0x5054,
#elif __BYTE_ORDER == __LITTLE_ENDIAN
BMP_MAGIC_BM = 0x4D42,
BMP_MAGIC_BA = 0x4142,
BMP_MAGIC_CI = 0x4943,
BMP_MAGIC_CP = 0x5043,
BMP_MAGIC_IC = 0x4349,
BMP_MAGIC_PT = 0x5450,
#endif
};
enum {
/* bmp header */
BMP_ESUCCESS,
BMP_ENOTBMP,
BMP_ENOTSUPP,
BMP_EINVALSIZ,
BMP_EINVALBPP,
BMP_ERRNO_COUNT,
};
const char *bmp_error_string[] = {
[BMP_ESUCCESS] = "Success",
[BMP_ENOTBMP] = "File is not a BMP",
[BMP_ENOTSUPP] = "File format not supported",
[BMP_EINVALSIZ] = "Inconsistent file size",
[BMP_EINVALBPP] = "Invalid BPP value",
};
int bmp_errno = BMP_ESUCCESS;
static inline const char *bmp_strerror(int err)
{
return bmp_error_string[err];
}
#endif /* BMP_H */
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