public void Start(AudioVideoFlow flow, LyncServer server)
{
_flow = flow;
_server = server;
Recorder recorder = new Recorder();
recorder.AttachFlow(_flow);
WmaFileSink sink = new WmaFileSink("voice_input.wma");
recorder.SetSink(sink);
recorder.Start();
var wmafileReader = new WMAFileReader("voice_input.wma");
WaveStream waveStream = WaveFormatConversionStream.CreatePcmStream(wmafileReader);
int reader = 0;
byte[] buffer = new byte[4096];
var header = GetWaveHeader(waveStream.WaveFormat);
_speech.SendMessage(new ArraySegment <byte>(header, 0, header.Length));
while ((reader = waveStream.Read(buffer, 0, buffer.Length)) != 0)
{
AudioDataAvailable(new ArraySegment <byte>(buffer, 0, buffer.Length));
Thread.Sleep(10);
}
}
private WaveOut CreatePlay(string file)
{
string ext = Path.GetExtension(file);
if (file.EndsWith(".mp3"))
{
using (var reader = new Mp3FileReader(file))
{
using (var waveStream = WaveFormatConversionStream.CreatePcmStream(reader))
{
using (var blockStream = new BlockAlignReductionStream(waveStream))
{
play = new WaveOut(WaveCallbackInfo.FunctionCallback());
play.Init(blockStream);
}
}
}
}
System.Media.SoundPlayer
else if (file.EndsWith(".wma"))
{
using (var reader = new WMAFileReader(file))
{
using (var waveStream = WaveFormatConversionStream.CreatePcmStream(reader))
{
using (var blockStream = new BlockAlignReductionStream(waveStream))
{
play = new WaveOut(WaveCallbackInfo.FunctionCallback());
play.Init(blockStream);
}
}
}
}
}
public byte[] ConvertToMp3(string file, int bitrate = 128)
{
using (var retMs = new MemoryStream())
using (var rdr = new WMAFileReader(file))
using (var wtr = new NAudio.Lame.LameMP3FileWriter(retMs, rdr.WaveFormat, bitrate))
{
rdr.CopyTo(wtr);
return(retMs.ToArray());
}
}
/// <summary>
/// Converts a WMA file to a WAV stream
/// </summary>
/// <param name="outputStream">Stream to store the converted wav.</param>
/// <param name="filePath">Path to a .wma file to convert</param>
/// <returns>The WaveFormat object of the converted wav</returns>
private static WaveFormat wmaToWav(string pathToWma, Stream outputStream, int sampleRate, int bitDepth, int numChannels)
{
if (!Path.GetExtension(pathToWma).ToLowerInvariant().Contains("wma"))
{
throw new ArgumentException("Must be a .wma file!");
}
using (var reader = new WMAFileReader(pathToWma))
{
var targetFormat = new NAudio.Wave.WaveFormat(sampleRate, bitDepth, numChannels);
var pcmStream = new WaveFormatConversionStream(targetFormat, reader);
var buffer = new byte[pcmStream.Length];
pcmStream.Read(buffer, 0, (int)pcmStream.Length);
outputStream.Write(buffer, 0, buffer.Length);
outputStream.Position = 0;
pcmStream.Close();
return(targetFormat);
}
}
static public Sound Read(byte[] source)
{
Sound result = new Sound();
string fileName = "tmp.wma";
File.WriteAllBytes(fileName, source);
WMAFileReader fileReader = new WMAFileReader(fileName);
File.Delete(fileName);
using (WaveStream wavStream = WaveFormatConversionStream.CreatePcmStream(fileReader))
{
int bytesToRead;
// using a mux, we force all sounds to be 2 channels
bytesToRead = (int)wavStream.Length;
byte[] rawWaveData = new byte[bytesToRead];
int bytesRead = wavStream.Read(rawWaveData, 0, bytesToRead);
result.SetSound(rawWaveData, wavStream.WaveFormat);
}
return(result);
}
/// <summary>
/// Creates an input WaveChannel (Audio file reader for MP3/WAV/OGG/FLAC/WMA/AIFF/Other formats in the future)
/// </summary>
/// <param name="filename"></param>
private void CreateInputWaveChannel(string filename)
{
string fileExt = Path.GetExtension(filename.ToLower());
if (fileExt == MP3Extension)
{
m_waveReader = new Mp3FileReader(filename);
m_blockAlignedStream = new BlockAlignReductionStream(m_waveReader);
// Wave channel - reads from file and returns raw wave blocks
m_waveChannel = new WaveChannel32(m_blockAlignedStream);
}
else if (fileExt == WAVExtension)
{
m_waveReader = new WaveFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
}
if (m_waveReader.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
}
else if (fileExt == OGGVExtension)
{
m_waveReader = new OggVorbisFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
}
if (m_waveReader.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
}
else if (fileExt == FLACExtension)
{
m_waveReader = new FLACFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
}
if (m_waveReader.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
}
else if (fileExt == WMAExtension)
{
m_waveReader = new WMAFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
}
if (m_waveReader.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
}
else if (fileExt == AIFFExtension)
{
m_waveReader = new AiffFileReader(filename);
m_waveChannel = new WaveChannel32(m_waveReader);
}
else
{
throw new ApplicationException("Cannot create Input WaveChannel - Unknown file type: " + fileExt);
}
}
