VC++读取AVi视频文件

头文件 #include <Vfw.h>

成员变量：

// for avi;
PGETFRAME Frame;
BITMAPFILEHEADER BMPFileHeader;
PAVIFILE aviFile;
PAVISTREAM aviStream;
AVISTREAMINFO aviStreamInfo;
int m_nFrameNumber;
BITMAPINFO* m_pBitMapInfo;
BYTE* pData;
int cy;
int cx;
HANDLE handle;
//

 

读取代码：

AVIFileInit();AVIFileOpen(&aviFile, "E:\\Alizee.avi", OF_READ, NULL);AVIFileGetStream(aviFile, &aviStream, streamtypeVIDEO, 0);AVIStreamInfo(aviStream, &aviStreamInfo, sizeof(aviStreamInfo));AVIFILEINFO fileInfo;AVIFileInfo(aviFile, &fileInfo, sizeof(AVIFILEINFO));cx = fileInfo.dwWidth;cy = fileInfo.dwHeight;AVIFileGetStream(aviFile, &aviStream, streamtypeVIDEO, 0);m_pBitMapInfo = new BITMAPINFO;m_pBitMapInfo->bmiHeader.biBitCount = 32;m_pBitMapInfo->bmiHeader.biClrImportant=0; m_pBitMapInfo->bmiHeader.biClrUsed=0; m_pBitMapInfo->bmiHeader.biCompression=0; m_pBitMapInfo->bmiHeader.biHeight=cy; m_pBitMapInfo->bmiHeader.biWidth=cx; m_pBitMapInfo->bmiHeader.biPlanes=1; m_pBitMapInfo->bmiHeader.biSize=sizeof(BITMAPINFOHEADER);//m_pBitMapInfo->bmiHeader.biSizeImage = (cx * 24 + 31) / 32 * 4 * cy; //图像数据的大小;m_pBitMapInfo->bmiHeader.biSizeImage = 0;m_pBitMapInfo->bmiHeader.biXPelsPerMeter=0;m_pBitMapInfo->bmiHeader.biYPelsPerMeter=0; handle=GlobalAlloc(GHND,((long)((cx*24+31)/32*4)*cy)); pData=(BYTE*)GlobalLock(handle);BMPFileHeader.bfType = 0x4D42;BMPFileHeader.bfSize = (cx * 24 + 31) / 32 * 4 * cy + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER); //图像的总大小;BMPFileHeader.bfReserved1=0;BMPFileHeader.bfReserved2=0;BMPFileHeader.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER); //24位真彩色位图恒为54;// static CEngine* pEngine = ((CHKEditorApp*)AfxGetApp())->m_pEngine;assert(pEngine != NULL);m_nFrameNumber = 0;SetTimer(ID_AVI_TIMER, 1, 0);

定时器里面：

case ID_AVI_TIMER:{if (m_nFrameNumber == aviStreamInfo.dwLength){KillTimer(ID_AVI_TIMER);return;}PGETFRAME pg = AVIStreamGetFrameOpen(aviStream, &(m_pBitMapInfo-> bmiHeader)); pData = (BYTE*)AVIStreamGetFrame(pg, m_nFrameNumber++); // CClientDC dc(this); // CRect rect; // GetClientRect(&rect); // StretchDIBits(HDC(dc),0,0,rect.right,rect.bottom,0,0,cx,cy,pData,(BITMAPINFO*)m_pBitMapInfo,DIB_RGB_COLORS,SRCCOPY); Engine->m_pixelBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD);memcpy(Engine->m_pixelBuffer->getCurrentLock().data, &BMPFileHeader, sizeof(BITMAPFILEHEADER));memcpy((BYTE*)Engine->m_pixelBuffer->getCurrentLock().data + sizeof(BITMAPFILEHEADER), m_pBitMapInfo,sizeof(BITMAPINFO));memcpy((BYTE*)Engine->m_pixelBuffer->getCurrentLock().data + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFO), pData, cx*cy*3);//memcpy((BYTE*)Engine->m_pixelBuffer->getCurrentLock().data, pData, cx * cy * 3/* + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFO)*/); Engine->m_pixelBuffer->unlock();if (m_nFrameNumber == 5){CFile myfile;myfile.Open( "e:\\hkx.bmp",CFile::modeCreate|CFile::modeWrite|CFile::typeBinary);myfile.Write(&BMPFileHeader, sizeof(BITMAPFILEHEADER));myfile.Write(m_pBitMapInfo,sizeof(BITMAPINFO));myfile.Write(pData, cx * cy * 3);myfile.Close();}AVIStreamGetFrameClose(pg);Engine->m_Root->renderOneFrame();}break;

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