rgb保存成bmp

来源：互联网发布：erp软件提供商编辑：程序博客网时间：2024/04/29 17:58

二值：

void SaveAsBmp( unsigned char *data, size_t width, size_t height,char *szFileName,RGBQUAD *rgbQuad /*= NULL*/ ){char path[MAX_PATH];GetCurrentDirectoryA(MAX_PATH, path);strcat(path, szFileName);RGBQUAD _rgbquad[256]; BYTE *_data = new BYTE[width*height];for (int c = 0; c < width * height; c++){unsigned char temp = *(data+c); *(_data+c) = (BYTE)(temp);// TRACE1("%d %d\n", *(_data+c), temp);} if (rgbQuad == NULL){rgbQuad = _rgbquad;}for (int i = 0; i < 256; i++){rgbQuad[i].rgbBlue = i;rgbQuad[i].rgbGreen = i;rgbQuad[i].rgbRed = i;rgbQuad[i].rgbReserved = 0;}BITMAPFILEHEADER bmpfilehead = {0};bmpfilehead.bfType = MAKEWORD('B','M');bmpfilehead.bfOffBits = sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*255;bmpfilehead.bfSize = bmpfilehead.bfOffBits+(width*height);BITMAPINFOHEADER bmpinfoheader = {0};bmpinfoheader.biSize = sizeof(BITMAPINFOHEADER);bmpinfoheader.biBitCount = 8;//位数bmpinfoheader.biClrImportant = 0;bmpinfoheader.biClrUsed = 0;bmpinfoheader.biCompression = BI_RGB;bmpinfoheader.biHeight = height;bmpinfoheader.biPlanes = 1;bmpinfoheader.biSizeImage = height*width;bmpinfoheader.biWidth = width;bmpinfoheader.biXPelsPerMeter = 0;bmpinfoheader.biYPelsPerMeter = 0;FILE *file = NULL;__try{if((file = fopen(path,"wb")) == NULL)return;size_t w = fwrite(&bmpfilehead,sizeof(BYTE),sizeof(bmpfilehead),file);// fflush(file);w = fwrite(&bmpinfoheader,sizeof(BYTE),sizeof(BITMAPINFOHEADER),file);// fflush(file);w = fwrite(rgbQuad,sizeof(BYTE),sizeof(RGBQUAD)*256,file);// fflush(file);w = fwrite(_data,sizeof(BYTE),width*height,file);// fflush(file);}__finally{if (file)fclose(file);delete _data;}}

RGB：

int widthStep = (((iWidth * 24) + 31) & (~31)) / 8 ; //每行实际占用的大小（每行都被填充到一个4字节边界）int DIBSize = widthStep * iHeight ;  //buffer的大小 （字节为单位）BYTE *data = new BYTE[sizeof(BITMAPINFOHEADER) + sizeof(BITMAPFILEHEADER) + DIBSize];BITMAPFILEHEADER *bhh = (BITMAPFILEHEADER *)data;bhh->bfType = ((WORD) ('M' << 8) | 'B');  //'BM'bhh->bfSize = (DWORD)sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER) + widthStep * iHeight;bhh->bfReserved1 = 0;bhh->bfReserved2 = 0;bhh->bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER);BITMAPINFOHEADER *bih = (BITMAPINFOHEADER *)(data + sizeof(BITMAPFILEHEADER));bih->biSize=40;       // header sizebih->biWidth=iWidth;bih->biHeight=iHeight;bih->biPlanes=1;bih->biBitCount=24;     // RGB encoded, 24 bitbih->biCompression=BI_RGB;   // no compression 非压缩bih->biSizeImage=widthStep*iHeight*3;bih->biXPelsPerMeter=0;bih->biYPelsPerMeter=0;bih->biClrUsed=0;bih->biClrImportant=0; memcpy(data + sizeof(BITMAPINFOHEADER) + sizeof(BITMAPFILEHEADER), pBuffer, DIBSize);TCHAR *BMPFileName = _T("d:/sss.bmp");CFile file;if(file.Open(BMPFileName,CFile::modeWrite | CFile::modeCreate)){file.Write((LPSTR)data, sizeof(BITMAPINFOHEADER) + sizeof(BITMAPFILEHEADER) + DIBSize);file.Close();return true;}return false;

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