1 unsigned char *pTemp;     2 BYTE OsdY = 0; 3 BYTE OsdU = 0; 4 BYTE OsdV = 0; 5  6 void OSDSetTextColor(BYTE OsdR, BYTE OsdG, BYTE OsdB) 7 { 8     OsdY = 0.25*OsdR+0.504*OsdG+0.098*OsdB+16; 9     OsdU = -0.148*OsdR-0.291*OsdG+0.439*OsdB+128;10     OsdV = 0.439*OsdR-0.368*OsdG-0.071*OsdB+128;11 }12 13 void CTest0Dlg::setOSD()14 {15     FILE *fp=fopen("d:\\temp\\OSD.bmp", "rb");16     if (fp == 0)17         return;18 19     HDC hDC = ::GetDC(GetSafeHwnd());20     HDC hMemDC = CreateCompatibleDC(hDC);21     fseek(fp, sizeof(BITMAPFILEHEADER), 0);22     BITMAPINFOHEADER head;23     fread(&head, sizeof(BITMAPINFOHEADER), 1, fp);24     int bmpHeight = head.biHeight;25     int bmpWidth = head.biWidth;26     int biBitCount = head.biBitCount;27     int lineByte = (bmpWidth*biBitCount/8+3)/4*4;28     RGBQUAD *pColorTable;29     unsigned char *pBmpBuf = new unsigned char[lineByte*bmpHeight];30     fread(pBmpBuf, 1, lineByte*bmpHeight, fp);31     memset(pBmpBuf,0, lineByte*bmpHeight);32     33     CDC *m_pMemDC;34     m_pMemDC = new CDC();35     CDC *pDC;36     pDC = GetDC();37     m_pMemDC->CreateCompatibleDC(pDC);38     CBitmap *m_pOldBmp = NULL;39     CBitmap *m_pMemBmp = new CBitmap();//根据图片的大小创建一个兼容位图40     m_pMemBmp->CreateCompatibleBitmap(pDC, bmpWidth, bmpHeight);41     m_pOldBmp = m_pMemDC->SelectObject(m_pMemBmp);42     43     // 把图像的数据绘制到兼容位图上44     SetDIBits(m_pMemDC->GetSafeHdc(), (HBITMAP)m_pMemBmp->m_hObject, 0, bmpHeight, (LPVOID)pBmpBuf, (BITMAPINFO*)&head, DIB_RGB_COLORS);45     m_pMemDC->SetBkMode(TRANSPARENT);46     m_pMemDC->SetTextColor(RGB(255, 0, 0));//RGB标记色47     OSDSetTextColor(0, 0, 0);//OSD显示色48     49     //设置字体50     CFont font;51     font.CreateFont(20,15,0,0,10,FALSE,FALSE,FALSE,ANSI_CHARSET,OUT_DEFAULT_PRECIS,OUT_DEFAULT_PRECIS,DEFAULT_QUALITY,FF_SWISS,"宋体");52     SelectObject(hMemDC, font); 53     ///////////////////////////54     SYSTEMTIME st;55     CString strDate,strTime;56     GetLocalTime(&st);57     strDate.Format("时间 %04d-%02d-%02d ",st.wYear,st.wMonth,st.wDay);58     strTime.Format("%02d:%02d:%02d",st.wHour,st.wMinute,st.wSecond);59     // 添加文字到指定位置60     m_pMemDC->TextOut(20, 40, strDate+strTime);61     62     pTemp = new unsigned char[lineByte*bmpHeight];63     GetDIBits(m_pMemDC->GetSafeHdc(), (HBITMAP)m_pMemBmp->m_hObject, 0, bmpHeight, (LPVOID)pTemp, (BITMAPINFO*)&head, DIB_RGB_COLORS);64     fclose(fp);65 66     delete m_pMemBmp;67     delete m_pMemDC;68     delete[] pBmpBuf;69 70 71     //MessageBox("VOER!");72 }73 74 调用部分75 //////////////////////////////////////////////////////////////////////////////////////76     setOSD();77     for (int i=0;i<80;i++)78     {79         for (int k=0;k<640;k++)80         {81             //dc.SetPixel(k,79-i,RGB(pTemp[(i*640+k)*3+2],pTemp[(i*640+k)*3+1],pTemp[(i*640+k)*3+0]));82             if (pTemp[(i*640+k)*3+2]!=0)//需要叠加  通过标记色过滤83             {84                 pFrameYUV->data[0][(79-i)*720+k]=OsdY;85                 if ((79-i)%2==0)86                 {87                     pFrameYUV->data[1][(79-i)*720/4+k/2]=OsdU;88                     pFrameYUV->data[2][(79-i)*720/4+k/2]=OsdV;89                 }            90             }91         }92     }93 /////////////////////////////////////////////////////////////////////////////////////////94 95     //拷贝数据yuv420，也可预先改变指针96     memcpy(image->pixels[0],    pFrameYUV->data[0],720*576);97     memcpy(image->pixels[2],    pFrameYUV->data[1],720*576/4);98     memcpy(image->pixels[1],    pFrameYUV->data[2],720*576/4);