private static byte[] GetWaveDataStream(string mlvFileName)
{
MLVCachedReader cache = GetReader(mlvFileName);
Stream mem = new MemoryStream();
MLVTypes.mlv_wavi_hdr_t header = cache.handler.WaviHeader;
WaveFormat fmt = new WaveFormat((int)header.samplingRate, header.bitsPerSample, header.channels);
cache.handler.WaveProvider = new BufferedWaveProvider(fmt);
cache.handler.WaveProvider.BufferLength = 20 * 1024 * 1024;
WaveFileWriter wr = new WaveFileWriter(mem, fmt);
lock (cache)
{
foreach (var frame in cache.reader.AudfXrefList.Keys)
{
/* seek to the correct block */
cache.reader.CurrentBlockNumber = cache.reader.GetAudioFrameBlockNumber(frame);
cache.handler.AudfHeader.blockSize = 0;
cache.reader.ReadBlock();
/* now the VIDF should be read correctly */
if (cache.handler.AudfHeader.blockSize == 0)
{
throw new InvalidDataException("Requested audio frame " + frame + " but the index points us wrong");
}
/* save into wave file stream */
byte[] data = new byte[cache.handler.WaveProvider.BufferedBytes];
cache.handler.WaveProvider.Read(data, 0, data.Length);
wr.Write(data, 0, data.Length);
}
}
mem.Seek(0, SeekOrigin.Begin);
byte[] buffer = new byte[mem.Length];
mem.Read(buffer, 0, buffer.Length);
mem.Close();
wr.Close();
return(buffer);
}
public void HandleBlock(string type, MLVTypes.mlv_wavi_hdr_t header, byte[] raw_data, int raw_pos, int raw_length)
{
WaviHeader = header;
if (DriverOut != null)
{
DriverOut.Stop();
}
try
{
DriverOut = new WaveOut();
DriverOut.DesiredLatency = 100;
WaveFormat fmt = new WaveFormat((int)header.samplingRate, header.bitsPerSample, header.channels);
WaveProvider = new BufferedWaveProvider(fmt);
WaveProvider.BufferLength = 256 * 1024;
DriverOut.Init(WaveProvider);
DriverOut.Play();
}
catch (Exception ex)
{
Console.WriteLine("No audio support on this platform (" + ex.ToString() + ")");
}
}
