将图像数据写入文件的函数

BOOL CreateBmp(char *filename, uint8_t *pRGBBuffer, int width, int height, int bpp)
{
BITMAPFILEHEADER bmpheader;
BITMAPINFO bmpinfo;
FILE *fp = NULL;

fp = fopen(filename,"wb");
if( fp == NULL )
{
return FALSE;
}

bmpheader.bfType = ('M' <<8)|'B';
bmpheader.bfReserved1 = 0;
bmpheader.bfReserved2 = 0;
bmpheader.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);
bmpheader.bfSize = bmpheader.bfOffBits + width*height*bpp/8;

bmpinfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmpinfo.bmiHeader.biWidth = width;
bmpinfo.bmiHeader.biHeight = height;
bmpinfo.bmiHeader.biPlanes = 1;
bmpinfo.bmiHeader.biBitCount = bpp;
bmpinfo.bmiHeader.biCompression = BI_RGB;
bmpinfo.bmiHeader.biSizeImage = 0;
bmpinfo.bmiHeader.biXPelsPerMeter = 100;
bmpinfo.bmiHeader.biYPelsPerMeter = 100;
bmpinfo.bmiHeader.biClrUsed = 0;
bmpinfo.bmiHeader.biClrImportant = 0;

fwrite(&bmpheader,sizeof(BITMAPFILEHEADER),1,fp);
fwrite(&bmpinfo.bmiHeader,sizeof(BITMAPINFOHEADER),1,fp);
fwrite(pRGBBuffer,width*height*bpp/8,1,fp);
fclose(fp);
fp = NULL;

return TRUE;
}