| wdenk | f5f146e | 2003-04-20 16:52:09 +0000 | [diff] [blame^] | 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_ */ |