Add files needed for bitmap load support

2003-04-20 16:52:09 +00:00
parent 824a1ebffe
commit 059ae173e9
3 changed files with 239 additions and 0 deletions
--- a/include/bmp_layout.h
+++ b/include/bmp_layout.h
@@ -0,0 +1,77 @@
+/* (C) Copyright 2002
+ * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/************************************************************************/
+/* ** Layout of a bmp file						*/
+/************************************************************************/
+
+#ifndef _BMP_H_
+#define _BMP_H_
+
+typedef struct bmp_color_table_entry {
+  __u8 blue;
+  __u8 green;
+  __u8 red;
+  __u8 reserved;
+} __attribute__((packed)) bmp_color_table_entry_t;
+
+/* When accessing these fields, remember that they are stored in little
+   endian format, so use linux macros, e.g. le32_to_cpu(width)          */
+
+typedef	struct 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 */
+  
+}  __attribute__((packed)) bmp_header_t;
+
+typedef struct bmp_image {
+  bmp_header_t header;
+  /* We use a zero sized array just as a placeholder for variable
+     sized array */
+  bmp_color_table_entry_t color_table[0];
+} bmp_image_t;
+
+/* 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_ */
--- a/include/cmd_bmp.h
+++ b/include/cmd_bmp.h
@@ -0,0 +1,44 @@
+/* (C) Copyright 2002
+ * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Bitmap display support
+ */
+#ifndef	_CMD_BMP_H
+#define	_CMD_BMP_H
+
+#include <common.h>
+#include <command.h>
+
+
+#if (CONFIG_COMMANDS & CFG_CMD_BMP)
+
+#define CMD_TBL_BMP	MK_CMD_TBL_ENTRY(				\
+	"bmp", 3,	3,	1,	do_bmp,				\
+	"bmp     - manipulate BMP image data\n",			\
+	"\nbmp info <imageAddr>    - display image info\n"		\
+	"bmp display <imageAddr> - display image\n"			\
+),
+int do_bmp (cmd_tbl_t *cmdtp,  int flag, int argc, char *argv[]);
+
+#else
+#define CMD_TBL_BMP
+#endif
+
+#endif	/* _CMD_BMP_H */