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diff --git a/source/nds/bitmap.h b/source/nds/bitmap.h
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+/* bitmap.c
+ *
+ * Copyright (C) 2010 dking <dking024@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licens e 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __BITMAP_H__
+#define __BITMAP_H__
+#include "ds2_types.h"
+#include "fs_api.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct _pixelmapheader{
+	u32		imHeadsize;	//Bitmap information header size
+	u32		imBitmapW;	//bitmap width in pixel
+	u32		imBitmapH;	//bitmap height in pixel
+	u16		imPlanes;	//bitmap planes numbers, must be set to 1
+	u16		imBitpixel;	//bits per pixel
+	u32		imCompess;	//compress method
+	u32		imImgsize;	//image size, times of 4-byte
+	u32		imHres;		//horizontal resolution, pixel/metel
+	u32		imVres;		//vertical resolution, pixel/metel
+	u32		imColnum;	//number of colors in color palette, 0 to exp(2)
+	u32		imImcolnum;	//important colors numbers used
+} IMAGEHEADER;
+
+
+typedef struct _bitmapfileheader{
+	u16		bfType;		//BMP file types
+	u32		bfSize;		//BMP file size(Not the pixel image size)
+	u16		bfReserved0;//reserved area0
+	u16		bfReserved1;//reserved area1
+	u32		bfImgoffst;	//pixel data area offset
+	IMAGEHEADER bfImghead;
+} BMPHEADER;
+
+
+typedef struct _bitmapInfo{
+	FILE* fp;
+	BMPHEADER bmpHead;
+} BMPINFO;
+
+//#define NULL 0
+
+//compression method
+/* Value Identified by 	Compression method 		Comments
+*	0 		BI_RGB 			none 				Most common
+*	1 		BI_RLE8 		RLE 8-bit/pixel 	Can be used only with 8-bit/pixel bitmaps
+*	2 		BI_RLE4 		RLE 4-bit/pixel 	Can be used only with 4-bit/pixel bitmaps
+*	3 		BI_BITFIELDS 	Bit field 			Can be used only with 16 and 32-bit/pixel bitmaps.
+*	4 		BI_JPEG 		JPEG 				The bitmap contains a JPEG image
+*	5 		BI_PNG 			PNG 				The bitmap contains a PNG image
+*/
+#define BI_RGB			0
+#define BI_RLE8			1
+#define BI_RLE4			2
+#define BI_BITFIELDS 	3
+#define BI_JPEG			4
+#define BI_PNG			5
+
+//error message
+#define BMP_OK				0
+#define BMP_ERR_OPENFAILURE	1
+#define BMP_ERR_FORMATE		2
+#define BMP_ERR_NOTSUPPORT	3
+#define BMP_ERR_NEED_GO_ON	4
+
+
+#define FILEOPENCHECK(fp)		(fp!=NULL)
+		
+
+extern int BMP_read(char* filename, char *buf, unsigned int width, 
+		unsigned int height, unsigned int *type);
+
+/*
+*	open BMP file
+*/
+extern int openBMP(BMPINFO* bmpInfo, const char* file);
+
+/*
+*	read pixel form BMP file
+*/
+extern int readBMP(BMPINFO* bmpInfo, unsigned int start_x, unsigned int start_y, 
+		unsigned int width, unsigned int height, void* buffer);
+
+/*
+*	close BMP file
+*/
+extern void closeBMP(BMPINFO* bmpInfo);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //__BITMAP_H__