public IntPtr GetStreamData(ref Avi.AVISTREAMINFO streamInfo, ref Avi.PCMWAVEFORMAT format, ref int streamLength) { streamInfo = GetStreamInfo(); format = GetFormat(); streamLength = Avi.AVIStreamLength(aviStream.ToInt32()) * streamInfo.dwSampleSize; IntPtr waveData = Marshal.AllocHGlobal(streamLength); int result = Avi.AVIStreamRead(aviStream, 0, streamLength, waveData, streamLength, 0, 0); if (result != 0) { throw new Exception("Exception in AVIStreamRead: " + result.ToString()); } return(waveData); }
public VideoStream(int aviFile, IntPtr aviStream) { this.aviFile = aviFile; this.aviStream = aviStream; Avi.BITMAPINFOHEADER bih = new Avi.BITMAPINFOHEADER(); int size = Marshal.SizeOf(bih); Avi.AVIStreamReadFormat(aviStream, 0, ref bih, ref size); Avi.AVISTREAMINFO streamInfo = GetStreamInfo(aviStream); this.frameRate = (float)streamInfo.dwRate / (float)streamInfo.dwScale; this.width = (int)streamInfo.rcFrame.right; this.height = (int)streamInfo.rcFrame.bottom; this.frameSize = bih.biSizeImage; this.countBitsPerPixel = bih.biBitCount; this.firstFrame = Avi.AVIStreamStart(aviStream.ToInt32()); this.countFrames = Avi.AVIStreamLength(aviStream.ToInt32()); }