/// <summary>
/// Creates a stream that can convert to PCM
/// </summary>
/// <param name="sourceStream">The source stream</param>
/// <returns>A PCM stream</returns>
public static WaveStream CreatePcmStream(WaveStream sourceStream)
{
if (sourceStream.WaveFormat.Encoding == WaveFormatEncoding.Pcm)
{
return(sourceStream);
}
WaveFormat pcmFormat = AcmStream.SuggestPcmFormat(sourceStream.WaveFormat);
return(new WaveFormatConversionStream(pcmFormat, sourceStream));
}
/// <summary>
/// Creates a new ACM frame decompressor
/// </summary>
/// <param name="sourceFormat">The MP3 source format</param>
public AcmMp3FrameDecompressor(WaveFormat sourceFormat)
{
this.pcmFormat = AcmStream.SuggestPcmFormat(sourceFormat);
try
{
conversionStream = new AcmStream(sourceFormat, pcmFormat);
}
catch (Exception)
{
disposed = true;
GC.SuppressFinalize(this);
throw;
}
}
public static WaveStream CreatePcmStream(WaveStream sourceStream)
{
if (sourceStream.WaveFormat.Encoding == WaveFormatEncoding.Pcm)
{
return(sourceStream);
}
WaveFormat waveFormat = AcmStream.SuggestPcmFormat(sourceStream.WaveFormat);
if (waveFormat.SampleRate < 8000)
{
if (sourceStream.WaveFormat.Encoding != WaveFormatEncoding.G723)
{
throw new InvalidOperationException("Invalid suggested output format, please explicitly provide a target format");
}
waveFormat = new WaveFormat(8000, 16, 1);
}
return(new WaveFormatConversionStream(waveFormat, sourceStream));
}
/// <summary>
/// Creates a new ACM frame decompressor
/// </summary>
/// <param name="sourceFormat">The MP3 source format</param>
public AcmMp3FrameDecompressor(WaveFormat sourceFormat)
{
this.pcmFormat = AcmStream.SuggestPcmFormat(sourceFormat);
conversionStream = new AcmStream(sourceFormat, pcmFormat);
}
private void StreamMP3_New(object state)
{
Thread.CurrentThread.Name = state.ToString();
string url = (string)state;
byte[] buffer = new byte[16384 * 4];
Dictionary <int, IMp3FrameDecompressor> Decompressors = new Dictionary <int, IMp3FrameDecompressor>();
WaveFormat outputFormat = new WaveFormat(44100, 16, 2);
this.bufferedWaveProvider = new BufferedWaveProvider(outputFormat);
this.bufferedWaveProvider.BufferDuration = TimeSpan.FromSeconds(2);
// WaveToSampleProvider wav2sample = new WaveToSampleProvider(this.bufferedWaveProvider);
ISampleProvider sampleProvider = new Pcm16BitToSampleProvider(this.bufferedWaveProvider);
SampleAggregator sa = new SampleAggregator(128);
sa.NotificationCount = 882;
sa.PerformFFT = true;
sa.FftCalculated += sa_FftCalculated;
NotifyingSampleProvider notifyProvider = new NotifyingSampleProvider(sampleProvider);
notifyProvider.Sample += (a, b) => sa.Add(b.Left);
volumeProvider = new VolumeSampleProvider(notifyProvider);
//volumeProvider = new SampleChannel(this.bufferedWaveProvider, true);
volumeProvider.Volume = 0.0f;
//volumeProvider.PreVolumeMeter += waveChannel_PreVolumeMeter;
for (int j = 0; j < 5; ++j)
{
try {
using (IWavePlayer waveOut = new WaveOut()) {
waveOut.PlaybackStopped += waveOut_PlaybackStopped;
waveOut.Init(volumeProvider);
using (var readFullyStream = new ShoutcastStream(url)) {
waveOut.Play();
if (OnStartPlay != null)
{
OnStartPlay(this);
}
do
{
if (bufferedWaveProvider != null && bufferedWaveProvider.BufferLength - bufferedWaveProvider.BufferedBytes < bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
{
int x = 0;
while (playbackState != StreamingPlaybackState.Stopped && x < 5)
{
x++;
Thread.Sleep(50);
}
}
else
{
Mp3Frame frame = Mp3Frame.LoadFromStream(readFullyStream, true);
if (currentTrack != readFullyStream.StreamTitle)
{
currentTrack = readFullyStream.StreamTitle;
if (!string.IsNullOrEmpty(currentTrack))
{
ThreadPool.QueueUserWorkItem(Search, currentTrack);
}
else
{
CurrentTrack = null;
if (OnNewTrack != null)
{
OnNewTrack(this, null);
}
}
}
IMp3FrameDecompressor dec;
if (!Decompressors.TryGetValue(frame.SampleRate, out dec))
{
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate,
frame.ChannelMode == ChannelMode.Mono ? 1 : 2,
frame.FrameLength, frame.BitRate);
var suggFromat = AcmStream.SuggestPcmFormat(waveFormat);
dec = new VbrAcmMp3FrameDecompressor(waveFormat, outputFormat);
Decompressors[frame.SampleRate] = dec;
}
int decompressed = dec.DecompressFrame(frame, buffer, 0);
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
} while (playbackState != StreamingPlaybackState.Stopped);
waveOut.Stop();
}
}
return;
} catch (Exception exe) {
int x = 0;
while (playbackState != StreamingPlaybackState.Stopped && x < 20)
{
x++;
Thread.Sleep(50);
}
if (playbackState == StreamingPlaybackState.Stopped)
{
return;
}
} finally {
foreach (var dc in Decompressors)
{
dc.Value.Dispose();
}
Decompressors.Clear();
}
}
if (OnError != null)
{
OnError(this);
}
}
