GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
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+/* SPDX-License-Identifier: GPL-2.0+ */
+/* (C) Copyright 2002
+ * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
+ */
+
+/************************************************************************/
+/* ** 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_ */