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include/bmp_layout.h
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/* (C) Copyright 2002 * Detlev Zundel, DENX Software Engineering, dzu@denx.de. * * SPDX-License-Identifier: GPL-2.0+ */ /************************************************************************/ /* ** Layout of a bmp file */ /************************************************************************/ #ifndef _BMP_H_ #define _BMP_H_ struct __packed bmp_color_table_entry { __u8 blue; __u8 green; __u8 red; __u8 reserved; }; /* When accessing these fields, remember that they are stored in little endian format, so use linux macros, e.g. le32_to_cpu(width) */ struct __packed bmp_header { /* Header */ char signature[2]; __u32 file_size; __u32 reserved; __u32 data_offset; /* InfoHeader */ __u32 size; __u32 width; __u32 height; __u16 planes; __u16 bit_count; __u32 compression; __u32 image_size; __u32 x_pixels_per_m; __u32 y_pixels_per_m; __u32 colors_used; __u32 colors_important; /* ColorTable */ }; struct bmp_image { struct bmp_header header; /* We use a zero sized array just as a placeholder for variable sized array */ struct bmp_color_table_entry color_table[0]; }; /* Data in the bmp_image is aligned to this length */ #define BMP_DATA_ALIGN 4 /* Constants for the compression field */ #define BMP_BI_RGB 0 #define BMP_BI_RLE8 1 #define BMP_BI_RLE4 2 #endif /* _BMP_H_ */ |