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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__
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