private void PerformEncode(IMFSinkWriter writer, int streamIndex, IWaveProvider inputProvider) { int maxLength = inputProvider.WaveFormat.AverageBytesPerSecond * 4; var managedBuffer = new byte[maxLength]; writer.BeginWriting(); long position = 0; long duration = 0; do { duration = ConvertOneBuffer(writer, streamIndex, inputProvider, position, managedBuffer); position += duration; } while (duration > 0); writer.DoFinalize(); }
private void PerformEncode(IMFSinkWriter writer, int streamIndex, IWaveProvider inputProvider) { int maxLength = inputProvider.WaveFormat.AverageBytesPerSecond * 4; var managedBuffer = new byte[maxLength]; writer.BeginWriting(); long position = 0; long duration = 0; do { duration = ConvertOneBuffer(writer, streamIndex, inputProvider, position, managedBuffer); position += duration; } while (duration > 0); writer.DoFinalize(); }
private void PerformEncode(IMFSinkWriter writer, int streamIndex, IWaveProvider inputProvider) { int maxLength = inputProvider.WaveFormat.AverageBytesPerSecond*4; var managedBuffer = new byte[maxLength]; writer.BeginWriting(); long position = 0; long duration = 0; do { duration = ConvertOneBuffer(writer, streamIndex, inputProvider, position, managedBuffer); position += duration; } while (duration > 0); //We are going to check the stats of the writer and ensure no more bytes are queued before we call DoFinalize() MF_SINK_WRITER_STATISTICS stats = new MF_SINK_WRITER_STATISTICS(); stats.cb = Marshal.SizeOf(stats); bool finished = false; const int sleepMs = 10; const int maxTimeInSeconds = 5; const int maxTries = (maxTimeInSeconds*1000)/sleepMs; var tries = 0; try { while (!finished) { writer.GetStatistics(streamIndex, stats); if (tries == maxTries) { var msg = string.Format( "Unable to save the MP3 file. Sink writer still has {0} bytes in the queue after waiting for {1} seconds.", stats.dwByteCountQueued, maxTimeInSeconds); throw new Exception(msg); } if (stats.dwByteCountQueued == 0) { finished = true; } else { //sleeping could be optional, but don't want to hog the CPU System.Threading.Thread.Sleep(sleepMs); } tries++; } } finally { writer.DoFinalize(); } }