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);
