public void AddAudioStream(IntPtr waveData, Avi.AVISTREAMINFO streamInfo, Avi.PCMWAVEFORMAT streamFormat, int streamLength) { IntPtr aviStream; int result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref streamInfo); if (result != 0) { throw new Exception("Exception in AVIFileCreateStream: " + result.ToString()); } result = Avi.AVIStreamSetFormat(aviStream, 0, ref streamFormat, Marshal.SizeOf(streamFormat)); if (result != 0) { throw new Exception("Exception in AVIStreamSetFormat: " + result.ToString()); } result = Avi.AVIStreamWrite(aviStream, 0, streamLength, waveData, streamLength, Avi.AVIIF_KEYFRAME, 0, 0); if (result != 0) { throw new Exception("Exception in AVIStreamWrite: " + result.ToString()); } result = Avi.AVIStreamRelease(aviStream); if (result != 0) { throw new Exception("Exception in AVIStreamRelease: " + result.ToString()); } }
public Avi.PCMWAVEFORMAT GetFormat() { Avi.PCMWAVEFORMAT format = new Avi.PCMWAVEFORMAT(); int size = Marshal.SizeOf(format); int result = Avi.AVIStreamReadFormat(aviStream, 0, ref format, ref size); return(format); }
public AviManager CopyTo(String newFileName, float startAtSecond, float stopAtSecond) { AviManager newFile = new AviManager(newFileName, false); try { VideoStream videoStream = GetVideoStream(); int startFrameIndex = (int)(videoStream.FrameRate * startAtSecond); int stopFrameIndex = (int)(videoStream.FrameRate * stopAtSecond); videoStream.GetFrameOpen(); Bitmap bmp = videoStream.GetBitmap(startFrameIndex); VideoStream newStream = newFile.AddVideoStream(false, videoStream.FrameRate, bmp); for (int n = startFrameIndex + 1; n <= stopFrameIndex; n++) { bmp = videoStream.GetBitmap(n); newStream.AddFrame(bmp); } videoStream.GetFrameClose(); AudioStream waveStream = GetWaveStream(); Avi.AVISTREAMINFO streamInfo = new Avi.AVISTREAMINFO(); Avi.PCMWAVEFORMAT streamFormat = new Avi.PCMWAVEFORMAT(); int streamLength = 0; IntPtr ptrRawData = waveStream.GetStreamData( ref streamInfo, ref streamFormat, ref streamLength); int startByteIndex = (int)(startAtSecond * (float)(waveStream.CountSamplesPerSecond * streamFormat.nChannels * waveStream.CountBitsPerSample) / 8); int stopByteIndex = (int)(stopAtSecond * (float)(waveStream.CountSamplesPerSecond * streamFormat.nChannels * waveStream.CountBitsPerSample) / 8); IntPtr ptrWavePart = new IntPtr(ptrRawData.ToInt32() + startByteIndex); byte[] rawData = new byte[stopByteIndex - startByteIndex]; Marshal.Copy(ptrWavePart, rawData, 0, rawData.Length); Marshal.FreeHGlobal(ptrRawData); streamInfo.dwLength = rawData.Length; streamInfo.dwStart = 0; IntPtr unmanagedRawData = Marshal.AllocHGlobal(rawData.Length); Marshal.Copy(rawData, 0, unmanagedRawData, rawData.Length); newFile.AddAudioStream(unmanagedRawData, streamInfo, streamFormat, rawData.Length); Marshal.FreeHGlobal(unmanagedRawData); } catch (Exception ex) { newFile.Close(); throw ex; } return(newFile); }
public void AddAudioStream(AudioStream newStream, int startAtFrameIndex) { Avi.AVISTREAMINFO streamInfo = new Avi.AVISTREAMINFO(); Avi.PCMWAVEFORMAT streamFormat = new Avi.PCMWAVEFORMAT(); int streamLength = 0; IntPtr rawData = newStream.GetStreamData(ref streamInfo, ref streamFormat, ref streamLength); IntPtr waveData = rawData; if (startAtFrameIndex > 0) { double framesPerSecond = GetVideoStream().FrameRate; double samplesPerSecond = newStream.CountSamplesPerSecond; double startAtSecond = startAtFrameIndex / framesPerSecond; int startAtSample = (int)(samplesPerSecond * startAtSecond); waveData = InsertSilence(startAtSample - 1, waveData, streamLength, ref streamInfo); } IntPtr aviStream; int result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref streamInfo); if (result != 0) { throw new Exception("Exception in AVIFileCreateStream: " + result.ToString()); } result = Avi.AVIStreamSetFormat(aviStream, 0, ref streamFormat, Marshal.SizeOf(streamFormat)); if (result != 0) { throw new Exception("Exception in AVIStreamSetFormat: " + result.ToString()); } result = Avi.AVIStreamWrite(aviStream, 0, streamLength, waveData, streamLength, Avi.AVIIF_KEYFRAME, 0, 0); if (result != 0) { throw new Exception("Exception in AVIStreamWrite: " + result.ToString()); } result = Avi.AVIStreamRelease(aviStream); if (result != 0) { throw new Exception("Exception in AVIStreamRelease: " + result.ToString()); } Marshal.FreeHGlobal(waveData); }
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); }