1 /* (C) Copyright 2002
2  * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
3  *
4  * See file CREDITS for list of people who contributed to this
5  * project.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License as
9  * published by the Free Software Foundation; either version 2 of
10  * the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20  * MA 02111-1307 USA
21  */
22 
23 /************************************************************************/
24 /* ** Layout of a bmp file						*/
25 /************************************************************************/
26 
27 #ifndef _BMP_H_
28 #define _BMP_H_
29 
30 typedef struct bmp_color_table_entry {
31 	__u8	blue;
32 	__u8	green;
33 	__u8	red;
34 	__u8	reserved;
35 } __attribute__ ((packed)) bmp_color_table_entry_t;
36 
37 /* When accessing these fields, remember that they are stored in little
38    endian format, so use linux macros, e.g. le32_to_cpu(width)          */
39 
40 typedef struct bmp_header {
41 	/* Header */
42 	char signature[2];
43 	__u32	file_size;
44 	__u32	reserved;
45 	__u32	data_offset;
46 	/* InfoHeader */
47 	__u32	size;
48 	__u32	width;
49 	__u32	height;
50 	__u16	planes;
51 	__u16	bit_count;
52 	__u32	compression;
53 	__u32	image_size;
54 	__u32	x_pixels_per_m;
55 	__u32	y_pixels_per_m;
56 	__u32	colors_used;
57 	__u32	colors_important;
58 	/* ColorTable */
59 
60 } __attribute__ ((packed)) bmp_header_t;
61 
62 typedef struct bmp_image {
63 	bmp_header_t header;
64 	/* We use a zero sized array just as a placeholder for variable
65 	   sized array */
66 	bmp_color_table_entry_t color_table[0];
67 } bmp_image_t;
68 
69 /* Data in the bmp_image is aligned to this length */
70 #define BMP_DATA_ALIGN	4
71 
72 /* Constants for the compression field */
73 #define BMP_BI_RGB	0
74 #define BMP_BI_RLE8	1
75 #define BMP_BI_RLE4	2
76 
77 #endif							/* _BMP_H_ */
78