/// <summary> Returns the sample rate of the first frame in the mp3. This is usually constant. </summary>
public uint GetSampleRate()
{
if (sampleRate != null)
{
return(sampleRate.GetValueOrDefault());
}
using (FileStream fs = File.OpenRead(fileName))
{
Mp3Frame frame = Mp3Frame.LoadFromStream(fs);
if (frame != null)
{
sampleRate = (uint)frame.SampleRate;
}
}
return(sampleRate.GetValueOrDefault());
}
/// <summary>
/// Reads the next mp3 frame
/// </summary>
/// <returns>Next mp3 frame, or null if EOF</returns>
private Mp3Frame ReadNextFrame(bool readData)
{
Mp3Frame frame = null;
try
{
frame = Mp3Frame.LoadFromStream(Mp3Stream, readData);
if (frame != null)
{
tocIndex++;
}
}
catch (EndOfStreamException)
{
// suppress for now - it means we unexpectedly got to the end of the stream
// half way through
}
return(frame);
}
double GetMediaDuration(string MediaFilename)
{
double duration = 0.0;
using (FileStream fs = System.IO.File.OpenRead(MediaFilename))
{
Mp3Frame frame = Mp3Frame.LoadFromStream(fs);
if (frame != null)
{
_sampleFrequency = (uint)frame.SampleRate;
}
while (frame != null)
{
duration += (double)frame.SampleCount / (double)frame.SampleRate;
frame = Mp3Frame.LoadFromStream(fs);
}
}
return(duration);
}
private static AudioClip LoadFromStream(Stream stream, string audioType)
{
WaveStream reader;
int initialSampleCount = 0;
if (audioType == ".wav")
{
reader = new WaveFileReader(stream);
}
else if (audioType == ".mp3")
{
reader = new Mp3FileReader(stream);
Mp3Frame frame = Mp3Frame.LoadFromStream(stream);
initialSampleCount = frame.SampleCount * reader.WaveFormat.Channels;
stream.Seek(0, SeekOrigin.Begin);
}
else
{
stream.Close();
return(null);
}
ISampleProvider provider = reader.ToSampleProvider();
long length = reader.Length / (reader.WaveFormat.BitsPerSample / 8);
float[] raw = new float[length];
try
{
provider.Read(raw, 0, (int)length);
}
catch (NAudio.MmException)
{
return(null);
}
float[] data = new float[length + initialSampleCount];
raw.CopyTo(data, initialSampleCount);
stream.Close();
AudioClip newClip = AudioClip.Create("SongAudioClip", data.Length / reader.WaveFormat.Channels, reader.WaveFormat.Channels, reader.WaveFormat.SampleRate, false);
newClip.SetData(data, 0);
return(newClip);
}
private static Mp3Frame[] StreamToFrames(Stream stream, bool readData = false)
{
IEnumerable <Mp3Frame> iterator()
{
stream.Position = 0;
while (stream.Position < stream.Length)
{
Mp3Frame next = null;
try { next = Mp3Frame.LoadFromStream(stream, readData); }
catch { }
if (next != null)
{
yield return(next);
}
}
}
using (stream)
{
return(iterator().Skip(1).ToArray());
}
}
// TODO:
/*
* Aside from being untested, this code was proposed for a change on the repository,
* which was rejected with the excuse of being unnecessary, since the current version
* already supports correct parsing of the MP3 duration. The original thread where this
* code was copied from was saying otherwise, needs verification.
*/
private static double GetMP3Duration(string fileName)
{
double duration = 0;
using (var fs = File.OpenRead(fileName))
{
Mp3Frame frame;
for (LoadFrame(); frame != null; LoadFrame())
{
double toAdd = frame.SampleCount * 2.0 / frame.SampleRate;
if (frame.ChannelMode != ChannelMode.Mono)
{
toAdd *= 2;
}
duration += toAdd;
}
void LoadFrame() => frame = Mp3Frame.LoadFromStream(fs);
}
return(duration);
}
/// <summary>
/// Returns a new <see cref="WaveFormat"/> depending on the file in the memory.
/// </summary>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
public virtual WaveFormat GetWaveFormat(IFileFromMemoryStream sourceStream)
{
WaveFormat format;
Mp3Frame frame = null;;
AudioFileType fileType = sourceStream.FilePath.EndsWith(".mp3") ?
AudioFileType.Mp3 :
sourceStream.FilePath.EndsWith(".wav") ?
AudioFileType.Wave :
AudioFileType.Unknown;
if (fileType == AudioFileType.Mp3)
{
int counter = 0;
while (frame == null)
{
frame = Mp3Frame.LoadFromStream((Stream)sourceStream);
Thread.Sleep(50);
counter++;
if (counter > 100)
{
throw new ArgumentNullException();
}
}
format = new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2,
frame.FrameLength, frame.BitRate);
}
else if (fileType == AudioFileType.Wave)
{
format = (new WaveFileReader(sourceStream.FilePath)).WaveFormat;
}
else
{
throw new ArgumentException("The file type is currently unsupported");
}
return(format);
}
/* From the specified file name, the media duration of the song is retrieved
* Allows the calculation of the entire song for ingesting fingerprints and song details */
public static double getMediaDuration(string fileName)
{
double duration = 0.0;
using (FileStream fs = File.OpenRead(fileName))
{
Mp3Frame frame = Mp3Frame.LoadFromStream(fs);
while (frame != null)
{
if (frame.ChannelMode == ChannelMode.Mono)
{
duration += (double)frame.SampleCount * 2.0 / (double)frame.SampleRate;
}
else
{
duration += (double)frame.SampleCount * 4.0 / (double)frame.SampleRate;
}
frame = Mp3Frame.LoadFromStream(fs);
}
}
return(duration);
}
private void PublishFromStream()
{
while (!_tokenSource.IsCancellationRequested)
{
var frame = Mp3Frame.LoadFromStream(_stream);
if (_decompressor == null)
{
_decompressor = CreateFrameDecompressor(frame);
}
var bytesRead = _decompressor.DecompressFrame(frame, _buffer, 0);
if (bytesRead == 0)
{
Thread.Sleep(TimeSpan.FromSeconds(1));
continue;
}
AddSamples(_buffer, 0, bytesRead);
#if DEBUG
Trace.WriteLine($"Buffered '{Source}' ({BufferedStream.CurrentWriteTime})...");
#endif
}
#if DEBUG
Trace.WriteLine($"Stopped reading from '{Source}' ({BufferedStream.CurrentWriteTime}).");
#endif
}
//got helps from erszcz on stackoverflow
static void Main(string[] args)
{
IPEndPoint ep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 11000); // endpoint where server is listening
var buffer = new byte[16384 * 4];
client.Connect(ep);
client.Send(new byte[] { 1, 2, 3, 4, 5 }, 5);
// send data
BufferedWaveProvider bufferedWaveProvider = null;
WaveOut waveOut = new WaveOut();
IMp3FrameDecompressor decomp = null;
int count = 0;
// then receive data
do
{
var receivedData = client.Receive(ref ep);
Console.WriteLine("receive data from " + ep.ToString());
client.Send(new byte[] { 1, 2, 3, 4, 5 }, 5);
Mp3Frame frame;
Stream ms = new MemoryStream();
ms.Write(receivedData, 0, receivedData.Length);
ms.Position = 0;
frame = Mp3Frame.LoadFromStream(ms, true);
if (decomp == null)
{
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2,
frame.FrameLength, frame.BitRate);
decomp = new AcmMp3FrameDecompressor(waveFormat);
bufferedWaveProvider = new BufferedWaveProvider(decomp.OutputFormat);
bufferedWaveProvider.BufferDuration =
TimeSpan.FromSeconds(20);
//var volumeProvider = new VolumeWaveProvider16(bufferedWaveProvider);
//volumeProvider.Volume = 1;
waveOut.Init(bufferedWaveProvider);
// allow us to get well ahead of ourselves
//this.bufferedWaveProvider.BufferedDuration = 250;
}
if (bufferedWaveProvider.BufferedDuration.TotalSeconds > 4)
{
waveOut.Play();
}
int decompressed = decomp.DecompressFrame(frame, buffer, 0);
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
count++;
} while (bufferedWaveProvider.BufferedDuration.TotalSeconds < 18);
//Debug.WriteLine(String.Format("Decompressed a frame {0}", decompressed));
//PlayMp3FromUrl(receivedData);
Console.Read();
}
private async Task DecompressFrames()
{
byte[] buffer = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
do
{
try
{
//WaveBuffer getting full, taking a break
if (bufferedWaveProvider != null && bufferedWaveProvider.BufferLength - bufferedWaveProvider.BufferedBytes < bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 2)
{
await Task.Delay(500);
}
//StreamBuffer empty, taking a break
else if (stream.Length < 16384 * 2)
{
await Task.Delay(500);
}
else
{
Mp3Frame frame = Mp3Frame.LoadFromStream(stream);
if (frame == null)
{
continue;
}
if (decompressor == null)
{
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2, frame.FrameLength, frame.BitRate);
decompressor = new AcmMp3FrameDecompressor(waveFormat);
bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
bufferedWaveProvider.BufferDuration = TimeSpan.FromSeconds(5); // allow us to get well ahead of ourselves
}
try
{
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
if (decompressed > 0)
{
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
}
catch (NAudio.MmException)
{ }
if (waveOut == null)
{
waveOut = new WaveOut();
VolumeWaveProvider16 volumeProvider = new VolumeWaveProvider16(bufferedWaveProvider);
volumeProvider.Volume = 1.0f;
waveOut.Init(volumeProvider);
waveOut.Play();
}
}
}
catch (EndOfStreamException)
{
CleanUpAudio();
}
} while (IsPlaying);
CleanUpAudio();
}
//------------------------------------------------------------------------------------------------------------------------
/// <summary>
/// Provides a pcm stream that can be used to a waveout device (i.e. speakers)
/// or can write pcm samples to a System.IO.Stream
/// </summary>
public void Start()
{
//declares
IMp3FrameDecompressor decompressor = null;
HttpWebResponse resp = null;
IsActive = true;
//init state to buffering
playbackState = StreamingPlaybackState.Buffering;
//do web request
var webRequest = (HttpWebRequest)WebRequest.Create(this.mp3url);
try
{
resp = (HttpWebResponse)webRequest.GetResponse();
}
catch (Exception ex)
{
DebugEx.Assert(ex);
}
if (resp == null)
{
return;
}
//local buffer that is overriden each time a mp3 frame is decompressed
var buffer = new byte[16384 * 4];
var respStream = resp.GetResponseStream();
var readFullyStream = new ReadFullyStream(respStream);
//Streaming Loop
try
{
while (playbackState != StreamingPlaybackState.Stopped)
{
//get frame
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (Exception ex)
{
DebugEx.TraceError(ex.Message);
break;
}
//get the codec info from the first frame
if (decompressor == null)
{
decompressor = Tools.CreateFrameDecompressor(frame);
audioFormat = new AudioFormat(decompressor.OutputFormat.SampleRate, (ushort)decompressor.OutputFormat.BitsPerSample, (ushort)decompressor.OutputFormat.Channels);
if (OnPCMStart != null)
{
OnPCMStart(this, decompressor.OutputFormat);
}
}
//write decompressed (pcm) samples to local buffer
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
if (IsActive)
{
//fire event
if (OnAudioDataCaptured != null)
{
OnAudioDataCaptured(this, new AudioEventArgs(buffer, decompressed));
}
}
}
}
catch (Exception ex)
{
DebugEx.TraceError(ex.Message);
}
}
private void Stream2Mp3(object state)
{
try
{
fullyDownloaded2 = false;
var url = (string)state;
requisicaodaweb2 = (HttpWebRequest)WebRequest.Create(url);
requisicaodaweb2.UserAgent = "GabardoHost GET URL";
HttpWebResponse resp;
try
{
resp = (HttpWebResponse)requisicaodaweb2.GetResponse();
}
catch (WebException e)
{
if (e.Status != WebExceptionStatus.RequestCanceled)
{
ShowError(e.Message + e.StackTrace);
}
return;
}
var buffer2 = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
IMp3FrameDecompressor decompressor2 = null;
try
{
using (var responseStream = resp.GetResponseStream())
{
var readFullyStream = new ReadFullyStream(responseStream);
do
{
if (IsBufferNearlyFull2)
{
//Debug.WriteLine("Buffer getting full, taking a break");
System.Threading.Thread.Sleep(500);
}
else
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
fullyDownloaded2 = true;
// reached the end of the MP3 file / stream
break;
}
catch (WebException)
{
// probably we have aborted download from the GUI thread
break;
}
if (frame == null)
{
break;
}
if (decompressor2 == null)
{
// don't think these details matter too much - just help ACM select the right codec
// however, the buffered provider doesn't know what sample rate it is working at
// until we have a frame
decompressor2 = CreateFrameDecompressor(frame);
provedordebuffer2 = new BufferedWaveProvider(decompressor2.OutputFormat);
provedordebuffer2.BufferDuration = TimeSpan.FromSeconds(int.Parse(txtBuffer2.Text));
// allow us to get well ahead of ourselves this.bufferedWaveProvider.BufferedDuration = 250;
}
int decompressed2 = decompressor2.DecompressFrame(frame, buffer2, 0);
//Debug.WriteLine(String.Format("Decompressed a frame {0}", decompressed));
provedordebuffer2.AddSamples(buffer2, 0, decompressed2);
}
}while (estadodoplay2 != StreamingPlaybackState.Stopped);
// Debug.WriteLine("Exiting");
// was doing this in a finally block, but for some reason
// we are hanging on response stream .Dispose so never get there
decompressor2.Dispose();
}
}
finally
{
if (decompressor2 != null)
{
decompressor2.Dispose();
}
}
}
catch (Exception ex)
{
ShowError(ex.Message + ex.StackTrace);
}
}
private void StreamMp3(object state)
{
_isBuffering(true);
ThrottledStream responseStream = (ThrottledStream)state;
byte[] buffer = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
IMp3FrameDecompressor decompressor = null;
try
{
using (responseStream)
{
_playbackState = StreamingPlaybackState.Buffering;
using (var readFullyStream = new ReadFullyStream(responseStream))
{
do
{
if (_bufferedWaveProvider != null &&
_bufferedWaveProvider.BufferLength - _bufferedWaveProvider.BufferedBytes <
_bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
{
Thread.Sleep(500);
}
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
if (frame == null)
{
_fullyDownloaded = true;
break;
}
}
catch (EndOfStreamException e)
{
_log.Log(e.Message, Category.Warn, Priority.Medium);
_fullyDownloaded = true;
// reached the end of the MP3 file / stream
break;
}
catch (WebException e)
{
_log.Log(e.Message, Category.Warn, Priority.Medium);
_fullyDownloaded = true;
// probably we have aborted download from the GUI thread
break;
}
catch (Exception e)
{
_log.Log(e.Message, Category.Exception, Priority.High);
_fullyDownloaded = true;
break;
}
if (decompressor == null)
{
WaveFormat waveFormat = new Mp3WaveFormat(44100,
frame.ChannelMode == ChannelMode.Mono
? 1
: 2, frame.FrameLength, frame.BitRate);
decompressor = new AcmMp3FrameDecompressor(waveFormat);
_bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
if (_track.TotalDuration != TimeSpan.Zero)
{
_bufferedWaveProvider.BufferDuration = _track.TotalDuration;
}
else
{
_bufferedWaveProvider.BufferDuration = TimeSpan.FromSeconds(25);
}
responseStream.MaximumBytesPerSecond = _bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4;
}
if (_bufferedWaveProvider != null)
{
try
{
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
_bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
catch (Exception e)
{
_fullyDownloaded = true;
_log.Log("Grooveshark: Error decompressing frame: " + e.Message, Category.Exception, Priority.Medium);
break;
}
}
} while (_playbackState != StreamingPlaybackState.Stopped);
// was doing this in a finally block, but for some reason
// we are hanging on response stream .Dispose so never get there
if (decompressor != null)
{
decompressor.Dispose();
decompressor = null;
}
}
}
}
finally
{
if (decompressor != null)
{
decompressor.Dispose();
decompressor = null;
}
}
_log.Log("Grooveshark: Buffer thread exiting", Category.Info, Priority.Medium);
}
public static void Main(string[] args)
{
XmlConfigurator.Configure();
Log.Info("Starting...");
var url = args.Any() ? args[0] : DefaultUrl;
var request = (HttpWebRequest)WebRequest.Create(url);
HttpWebResponse response = null;
try
{
response = (HttpWebResponse)request.GetResponse();
Log.Info("Connected");
}
catch (WebException e)
{
Log.Error($"Could not read stream: {e.Message}");
Environment.Exit(1);
}
using (var responseStream = response.GetResponseStream())
{
var sampleBuffer = new float[SampleBufferSize];
var recorders = new List <DispatchMessageRecorder>();
var byteBuffer = new byte[16384 * 4];
var readFullyStream = new ReadFullyStream(responseStream);
var decompressor = CreateDecompressor(readFullyStream);
var bufferedWaveProvider = CreateBufferedWaveProvider(decompressor);
var toneDetector = new TonePatternDetector(TargetFrequency1, TargetFrequency2,
bufferedWaveProvider.WaveFormat.SampleRate);
var sampleProvider = bufferedWaveProvider.ToSampleProvider();
while (true)
{
var frame = Mp3Frame.LoadFromStream(readFullyStream);
var bytesReadCount = decompressor.DecompressFrame(frame, byteBuffer, 0);
bufferedWaveProvider.AddSamples(byteBuffer, 0, bytesReadCount);
var sampleCount = sampleProvider.Read(sampleBuffer, 0, sampleBuffer.Length);
if (EndOfSamples(sampleCount, sampleBuffer))
{
break;
}
if (toneDetector.Detected(sampleBuffer))
{
Log.Info($"Tone detected at {DateTime.UtcNow}");
recorders.Add(new DispatchMessageRecorder(bufferedWaveProvider.WaveFormat));
toneDetector.Reset();
}
foreach (var recorder in recorders)
{
recorder.Record(byteBuffer, bytesReadCount, sampleBuffer, sampleCount);
}
recorders = RefreshRecorderList(recorders).ToList();
}
recorders.ForEach(r => r.Dispose());
var cli = new WebClient();
string apicall = cli.DownloadString("http://api.citizensmedical.ca/ping.php?file=dispatch_" + { DateTime.Now: ddMMyyyy_HHmmssff } +".wav");
Log.Info("API Results: " + apicall);
Log.Info("End of stream");
}
}
private void StreamMp3(object state)
{
if (Settings.IgnoreSSLcertificateError)
{
if (ServicePointManager.ServerCertificateValidationCallback == null)
{
ServicePointManager.ServerCertificateValidationCallback = (sender, cert, chain, errors) => true;
}
else
{
ServicePointManager.ServerCertificateValidationCallback = null;
}
}
_fullyDownloaded = false;
var url = (string)state;
_webRequest = (HttpWebRequest)WebRequest.Create(url);
_webRequest.KeepAlive = true;
HttpWebResponse resp;
try
{
resp = (HttpWebResponse)_webRequest.GetResponse();
}
catch (WebException)
{
return;
}
var buffer = new byte[16384 * Settings.NetworkBuffer]; // needs to be big enough to hold a decompressed frame
IMp3FrameDecompressor decompressor = null;
try
{
using (Stream responseStream = resp.GetResponseStream())
{
var readFullyStream = new ReadFullyStream(responseStream);
do
{
if (IsBufferNearlyFull)
{
Debug.WriteLine("Buffer getting full, taking a break");
Thread.Sleep(500);
}
else if (!_fullyDownloaded)
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
Debug.WriteLine("fullyDownloaded!");
_fullyDownloaded = true;
// reached the end of the MP3 file / stream
break;
}
catch (WebException)
{
Debug.WriteLine("WebException!");
// probably we have aborted download from the GUI thread
break;
}
if (decompressor == null)
{
// don't think these details matter too much - just help ACM select the right codec
// however, the buffered provider doesn't know what sample rate it is working at
// until we have a frame
decompressor = CreateFrameDecompressor(frame);
_bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
_bufferedWaveProvider.BufferDuration = TimeSpan.FromSeconds(Settings.NetworkBuffer);
// allow us to get well ahead of ourselves
}
try
{
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
//Debug.WriteLine(String.Format("Decompressed a frame {0}", decompressed));
_bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
catch (ArgumentNullException)
{
Debug.WriteLine("fullyDownloaded!");
_fullyDownloaded = true;
// reached the end of the MP3 file / stream
break;
}
catch
{
//oops
}
}
} while (_playbackState != StreamingPlaybackState.Stopped);
Debug.WriteLine("Exiting");
// was doing this in a finally block, but for some reason
// we are hanging on response stream .Dispose so never get there
if (decompressor != null)
{
decompressor.Dispose();
}
readFullyStream.Dispose();
}
}
finally
{
if (decompressor != null)
{
decompressor.Dispose();
}
//StopPlayback();
}
}
private void StreamMp3(object state)
{
fullyDownloaded = false;
var url = (string)state;
webRequest = (HttpWebRequest)WebRequest.Create(url);
HttpWebResponse resp;
try
{
resp = (HttpWebResponse)webRequest.GetResponse();
}
catch (WebException e)
{
if (e.Status != WebExceptionStatus.RequestCanceled)
{
/// TODO: Update this to show an error message and handle it properly
//textdebug.Text = e.Message;
}
return;
}
var buffer = new byte[16384 * 4];
IMp3FrameDecompressor decompressor = null;
try
{
using (var responseStream = resp.GetResponseStream())
{
var readFullyStream = new ReadFullyStream(responseStream);
do
{
if (IsBufferNearlyFull)
{
Thread.Sleep(500);
}
else
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
fullyDownloaded = true;
break;
}
catch (WebException)
{
break;
}
if (decompressor == null)
{
// don't think these details matter too much - just help ACM select the right codec
// however, the buffered provider doesn't know what sample rate it is working at
// until we have a frame
decompressor = CreateFrameDecompressor(frame);
bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
bufferedWaveProvider.BufferDuration = TimeSpan.FromSeconds(20); // allow us to get well ahead of ourselves
//this.bufferedWaveProvider.BufferedDuration = 250;
}
/// TODO: Sometimes this throws MMException
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
//Debug.WriteLine(String.Format("Decompressed a frame {0}", decompressed));
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
} while (playbackState != StreamingPlaybackState.Stopped);
decompressor.Dispose();
}
}
finally
{
if (decompressor != null)
{
decompressor.Dispose();
}
}
}
private void PlayStream(Stream responseStream, CancellationToken cancelToken, byte[] buffer, IMp3FrameDecompressor decompressor = null)
{
var readFullyStream = new ReadFullyStream(responseStream);
while (!cancelToken.IsCancellationRequested)
{
if (IsBufferNearlyFull)
{
Console.WriteLine("Buffer getting full, taking a break");
Thread.Sleep(500);
}
else
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
var fullyDownloaded = true;
// reached the end of the MP3 file / stream
break;
}
catch (WebException)
{
// probably we have aborted download from the GUI thread
break;
}
if (frame == null)
{
break;
}
if (decompressor == null)
{
// don't think these details matter too much - just help ACM select the right codec
// however, the buffered provider doesn't know what sample rate it is working at
// until we have a frame
decompressor = CreateFrameDecompressor(frame);
bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
bufferedWaveProvider.BufferDuration =
TimeSpan.FromSeconds(20); // allow us to get well ahead of ourselves
//this.bufferedWaveProvider.BufferedDuration = 250;
}
try
{
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
if (bufferedWaveProvider != null)
{
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
}
catch (Exception)
{
}
//Debug.WriteLine(String.Format("Decompressed a frame {0}", decompressed));
}
if (waveOut == null && bufferedWaveProvider != null)
{
waveOut = new WaveOut();
volumeProvider = new VolumeWaveProvider16(bufferedWaveProvider);
volumeProvider.Volume = 1.0f;
waveOut.Init(volumeProvider);
waveOut.Volume = volume;
waveOut.Play();
}
}
}
/// <summary>Liek MP3 plūsmu buferī.</summary>
private async Task StreamMp3()
{
try { await stream.Open(); } catch { unexpectedStop.BeginInvoke(null, null); return; }
IMp3FrameDecompressor decompressor = null;
byte[] buffer = new byte[65536]; // Atspiests skaņas fragments.
bool hasException = false;
PlaybackState = PlaybackState.Buffering;
playbackTimer.Start();
int sampleRate = 0; // Iepriekšēja skaņas fragmenta frekvence, piemēram, 44100.
while (PlaybackState == PlaybackState.Buffering || PlaybackState == PlaybackState.Playing)
{
if (bufferedWaveProvider != null &&
bufferedWaveProvider.BufferLength - bufferedWaveProvider.BufferedBytes < bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
{
await Task.Delay(500); // Kamēr buferī pietiekami datu, lejuplāde var pagaidīt.
continue;
}
Mp3Frame frame = null;
try { frame = Mp3Frame.LoadFromStream(stream); } catch (Exception) {
hasException = PlaybackState != PlaybackState.Stopped;
break;
}
if (frame.SampleRate != sampleRate)
{
if (decompressor == null)
{
waveOut = new WaveOut();
}
else
{
decompressor.Dispose();
}
Debug.WriteLine("{0} Hz, {1} bps, {2} bytes", frame.SampleRate, frame.BitRate, frame.FrameLength);
// Sagatavo dekoderi saskaņā ar pirmā skaņas fragmenta īpatnībām.
decompressor = new AcmMp3FrameDecompressor(
new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2, frame.FrameLength, frame.BitRate));
bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
bufferedWaveProvider.BufferDuration = TimeSpan.FromSeconds(3);
volumeProvider = new VolumeWaveProvider16(bufferedWaveProvider);
volumeProvider.Volume = isMuted?0:volume;
if (waveOut == null)
{
break; // Kad apstādina atskaņošanu, tad novērš kļūdu nākamā rindā.
}
waveOut.Init(volumeProvider);
// Frekvencei jābūt nemainīgai visas plūsmas garumā, bet var tikt nepareizi noteikta pēc pirmā fragmenta.
sampleRate = frame.SampleRate;
}
try {
bufferedWaveProvider.AddSamples(buffer, 0, decompressor.DecompressFrame(frame, buffer, 0));
} catch { hasException = true; break; }
}
;
if (PlaybackState != PlaybackState.Stopped)
{
stream.Close();
}
if (decompressor != null)
{
decompressor.Dispose();
}
if (hasException)
{
unexpectedStop.BeginInvoke(null, null);
}
}
public static void receivingSong()
{
waveOut = new WaveOut();
decomp = null;
int count = 0;
var buffer = new byte[16384 * 4];
do
{
current = Thread.CurrentThread;
if (bufferedWaveProvider != null && bufferedWaveProvider.BufferedDuration.TotalSeconds > 5)
{
Thread.Sleep(200);
if (buffering == false)
{
break;
}
}
byte[] receivedData = new byte[2000];
if (!receiveData(ref receivedData))
{
break;
}
if (Encoding.ASCII.GetString(receivedData) == "done")
{
break;
}
else
{
client.Send(Encoding.ASCII.GetBytes("more"), 4); // Nhan change value here
}
Mp3Frame frame;
Stream ms = new MemoryStream();
ms.Write(receivedData, 0, receivedData.Length);
ms.Position = 0;
frame = Mp3Frame.LoadFromStream(ms, true);
if (decomp == null)
{
try
{
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2,
frame.FrameLength, frame.BitRate);
decomp = new AcmMp3FrameDecompressor(waveFormat);
}
catch
{
break;
}
bufferedWaveProvider = new BufferedWaveProvider(decomp.OutputFormat);
bufferedWaveProvider.BufferDuration =
TimeSpan.FromSeconds(20);
}
if (bufferedWaveProvider.BufferedDuration.TotalSeconds > 5 && waveOut.PlaybackState == PlaybackState.Stopped && buffering == true)
{
try
{
waveOut.Init(bufferedWaveProvider);
waveOut.Play();
}
catch
{
break;
}
}
try
{
int decompressed = decomp.DecompressFrame(frame, buffer, 0);
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
catch
{
break;
}
count++;
} while (buffering);
}
private void StreamMP3()
{
_abort = new ManualResetEvent(false);
HttpWebRequest request = null;
try
{
var resp = _connFactory.GetResponse(_source, "GET", "", out request);
var buffer = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
IMp3FrameDecompressor decompressor = null;
using (var responseStream = resp.GetResponseStream())
{
var readFullyStream = new ReadFullyStream(responseStream);
while (!_abort.WaitOne(20) && !MainForm.ShuttingDown)
{
if (_bufferedWaveProvider != null &&
_bufferedWaveProvider.BufferLength - _bufferedWaveProvider.BufferedBytes <
_bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
{
//Debug.WriteLine("Buffer getting full, taking a break");
Thread.Sleep(100);
}
else
{
var da = DataAvailable;
if (da != null)
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
// reached the end of the MP3 file / stream
break;
}
catch (WebException)
{
// probably we have aborted download from the GUI thread
break;
}
if (decompressor == null || _bufferedWaveProvider == null)
{
// don't think these details matter too much - just help ACM select the right codec
// however, the buffered provider doesn't know what sample rate it is working at
// until we have a frame
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate,
frame.ChannelMode == ChannelMode.Mono ? 1 : 2, frame.FrameLength, frame.BitRate);
RecordingFormat = new WaveFormat(frame.SampleRate, 16,
frame.ChannelMode == ChannelMode.Mono ? 1 : 2);
decompressor = new AcmMp3FrameDecompressor(waveFormat);
_bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat)
{
BufferDuration = TimeSpan.FromSeconds(5)
};
_sampleChannel = new SampleChannel(_bufferedWaveProvider);
_sampleChannel.PreVolumeMeter += SampleChannelPreVolumeMeter;
}
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
_bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
var sampleBuffer = new float[buffer.Length];
int read = _sampleChannel.Read(sampleBuffer, 0, buffer.Length);
da(this, new DataAvailableEventArgs((byte[])buffer.Clone(), read));
if (Listening)
{
WaveOutProvider?.AddSamples(buffer, 0, read);
}
}
}
}
// was doing this in a finally block, but for some reason
// we are hanging on response stream .Dispose so never get there
if (decompressor != null)
{
decompressor.Dispose();
decompressor = null;
}
}
}
catch (Exception ex)
{
_res = ReasonToFinishPlaying.DeviceLost;
Logger.LogException(ex, "MP3Stream");
}
try
{
request?.Abort();
}
catch { }
request = null;
AudioFinished?.Invoke(this, new PlayingFinishedEventArgs(_res));
_abort.Close();
}
protected Mp3FileReaderBase(Stream inputStream, FrameDecompressorBuilder frameDecompressorBuilder, bool ownInputStream)
{
if (inputStream == null)
{
throw new ArgumentNullException(nameof(inputStream));
}
if (frameDecompressorBuilder == null)
{
throw new ArgumentNullException(nameof(frameDecompressorBuilder));
}
this._ownInputStream = ownInputStream;
try
{
_mp3Stream = inputStream;
Id3v2Tag = Id3v2Tag.ReadTag(_mp3Stream);
_dataStartPosition = _mp3Stream.Position;
var firstFrame = Mp3Frame.LoadFromStream(_mp3Stream);
if (firstFrame == null)
{
throw new InvalidDataException("Invalid MP3 file - no MP3 Frames Detected");
}
double bitRate = firstFrame.BitRate;
XingHeader = XingHeader.LoadXingHeader(firstFrame);
// If the header exists, we can skip over it when decoding the rest of the file
if (XingHeader != null)
{
_dataStartPosition = _mp3Stream.Position;
}
// workaround for a longstanding issue with some files failing to load
// because they report a spurious sample rate change
var secondFrame = Mp3Frame.LoadFromStream(_mp3Stream);
if (secondFrame != null &&
(secondFrame.SampleRate != firstFrame.SampleRate ||
secondFrame.ChannelMode != firstFrame.ChannelMode))
{
// assume that the first frame was some kind of VBR/LAME header that we failed to recognise properly
_dataStartPosition = secondFrame.FileOffset;
// forget about the first frame, the second one is the first one we really care about
firstFrame = secondFrame;
}
_mp3DataLength = _mp3Stream.Length - _dataStartPosition;
// try for an ID3v1 tag as well
_mp3Stream.Position = _mp3Stream.Length - 128;
byte[] tag = new byte[128];
_mp3Stream.Read(tag, 0, 128);
if (tag[0] == 'T' && tag[1] == 'A' && tag[2] == 'G')
{
Id3v1Tag = tag;
_mp3DataLength -= 128;
}
_mp3Stream.Position = _dataStartPosition;
// create a temporary MP3 format before we know the real bitrate
Mp3WaveFormat = new Mp3WaveFormat(firstFrame.SampleRate,
firstFrame.ChannelMode == ChannelMode.Mono ? 1 : 2,
firstFrame.FrameLength, (int)bitRate);
CreateTableOfContents();
_tocIndex = 0;
// [Bit rate in Kilobits/sec] = [Length in kbits] / [time in seconds]
// = [Length in bits ] / [time in milliseconds]
// Note: in audio, 1 kilobit = 1000 bits.
// Calculated as a double to minimize rounding errors
bitRate = (_mp3DataLength * 8.0 / TotalSeconds());
_mp3Stream.Position = _dataStartPosition;
// now we know the real bitrate we can create an accurate MP3 WaveFormat
Mp3WaveFormat = new Mp3WaveFormat(firstFrame.SampleRate,
firstFrame.ChannelMode == ChannelMode.Mono ? 1 : 2, firstFrame.FrameLength, (int)bitRate);
_decompressor = frameDecompressorBuilder(Mp3WaveFormat);
WaveFormat = _decompressor.OutputFormat;
_bytesPerSample = (_decompressor.OutputFormat.BitsPerSample) / 8 * _decompressor.OutputFormat.Channels;
// no MP3 frames have more than 1152 samples in them
_bytesPerDecodedFrame = 1152 * _bytesPerSample;
// some MP3s I seem to get double
_decompressBuffer = new byte[_bytesPerDecodedFrame * 2];
}
catch (Exception)
{
if (ownInputStream)
{
inputStream.Dispose();
}
throw;
}
}
private void StreamMp3(object state)
{
fullyDownloaded = false;
string path = (string)state;
webRequest = (HttpWebRequest)WebRequest.Create(path);
HttpWebResponse resp;
try
{
resp = (HttpWebResponse)webRequest.GetResponse();
}
catch (WebException e)
{
if (e.Status != WebExceptionStatus.RequestCanceled)
{
Console.WriteLine(e.Message);
}
return;
}
var buffer = new byte[16384 * 4];
IMp3FrameDecompressor decompressor = null;
try
{
using (var responseStream = resp.GetResponseStream())
{
var readFullyStream = new ReadFullyStream(responseStream);
do
{
if (IsBufferNearlyFull)
{
Console.WriteLine("buffer getting full, sleeping.");
Thread.Sleep(500);
}
else
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
if (frame == null)
{
throw new EndOfStreamException();
}
}
catch (EndOfStreamException)
{
Console.WriteLine("Stream Fully Downloaded");
fullyDownloaded = true;
break;
}
catch (WebException)
{
Console.WriteLine("Stream Download Stopped");
break;
}
if (decompressor == null)
{
decompressor = CreateFrameDecompressor(frame);
bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
bufferedWaveProvider.BufferDuration = TimeSpan.FromSeconds(20);
}
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
} while (playbackState != StreamingPlaybackState.Stopped);
decompressor.Dispose();
}
}
finally
{
if (decompressor != null)
{
decompressor.Dispose();
}
}
}
private void _bufferLoop()
{
Console.WriteLine("[Buffering thread] Started.");
_wavebuffer.DiscardOnBufferOverflow = true;
// Buffering loop
do
{
if (_cancel_buffer.IsCancellationRequested)
{
Console.WriteLine("[Buffering thread] Cancellation requested.");
//_cancel_buffer_token.ThrowIfCancellationRequested();
//Console.WriteLine("[Buffering thread] WARNING: Cancellation token is not cleanly set!");
break;
}
// Checking metadata
if (Metadata != stream.Metadata)
{
this.Metadata = stream.Metadata;
Task.Factory.StartNew(() =>
{
Console.WriteLine("[Buffering thread] Metadata has been changed to \"{0}\"", stream.Metadata);
Console.WriteLine("[Buffering thread] Delaying because of the buffering...", stream.Metadata);
Thread.Sleep(_wavebuffer.BufferedDuration);
Console.WriteLine("[Buffering thread] Exposing metadata NOW.", stream.Metadata);
if (MetadataChanged != null)
{
MetadataChanged.Invoke(this, new EventArgs());
}
});
}
// Seperated buffer
long bufferSize = 1024
* (Codec == StreamCodec.MP3 ? 128 : 8); // 128 kB for MP3, 8 kB for OGG/AACplus
byte[] buffer = new byte[bufferSize];
int decompressedLength = 0;
switch (Codec)
{
case StreamCodec.MP3:
// Decompress the frame
decompressedLength = _decoderMp3.DecompressFrame(frame, buffer, 0);
// Read next frame
frame = Mp3Frame.LoadFromStream(stream);
// Add the decompressed frame (samples) into the audio buffer for later playback
_wavebuffer.AddSamples(buffer, 0, decompressedLength);
break;
default:
throw new NotSupportedException();
}
} while (true);
_decoderMp3.Dispose();
stream.Close();
stream.Dispose();
}
private void StreamMp3(object state)
{
fullyDownloaded = false;
var url = (string)state;
webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Headers.Clear();
webRequest.Headers.Add("Icy-MetaData", "1");
HttpWebResponse resp;
var metaInt = 0;
try
{
resp = (HttpWebResponse)webRequest.GetResponse();
if (resp.Headers.AllKeys.Contains("icy-metaint"))
{
metaInt = Convert.ToInt32(resp.GetResponseHeader("icy-metaint"));
}
}
catch (WebException e)
{
if (e.Status != WebExceptionStatus.RequestCanceled)
{
_log.Error(e.Message);
}
return;
}
var buffer = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
IMp3FrameDecompressor decompressor = null;
try
{
using (var responseStream = resp.GetResponseStream())
{
readFullyStream = new ReadFullyStream(responseStream, metaInt);
do
{
if (IsBufferNearlyFull)
{
_log.Verbose("Buffer getting full, taking a break");
Thread.Sleep(500);
}
else
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
fullyDownloaded = true;
// reached the end of the MP3 file / stream
break;
}
catch (WebException)
{
// probably we have aborted download from the GUI thread
break;
}
if (frame == null)
{
break;
}
if (decompressor == null)
{
// don't think these details matter too much - just help ACM select the right codec
// however, the buffered provider doesn't know what sample rate it is working at
// until we have a frame
decompressor = CreateFrameDecompressor(frame);
bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
bufferedWaveProvider.BufferDuration =
TimeSpan.FromSeconds(20); // allow us to get well ahead of ourselves
//this.bufferedWaveProvider.BufferedDuration = 250;
}
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
//Debug.WriteLine(String.Format("Decompressed a frame {0}", decompressed));
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
} while (playbackState != StreamingPlaybackState.Stopped);
_log.Verbose("Exiting");
// was doing this in a finally block, but for some reason
// we are hanging on response stream .Dispose so never get there
decompressor.Dispose();
}
}
finally
{
if (decompressor != null)
{
decompressor.Dispose();
}
}
}
private void StreamMp3(object nothing)
{
if (frameInputStream == null)
{
frameInputStream = new MemoryStream(1024 * 1024); //1MB
}
readFullyStream = new ReadFullyStream(frameInputStream);
Mp3Frame frame;
byte[] buff = new byte[16384 * 4];
while (!disposed)
{
if (playState == PlayState.playing && !decompressDone)
{
try
{
if (frameIndex >= frameList.Length)
{
decompressDone = true;
continue;
}
}
catch (Exception e)
{
continue;
}
if (IsBufferNearlyFull)
{
Thread.Sleep(500);
}
else
{
lock (setMediaLock)
{
try
{
if (Monitor.TryEnter(frameIndexLock, 500))
{
if (frameList == null)
{
continue;
}
if (frameList[frameIndex] == null)
{
if ((DateTime.Now - lastGotFrameTime).TotalMilliseconds > 3000)
{
Console.WriteLine("@@@@@@@@@@ Recourse Data @@@@@@@@@@");
checkChunk(frameIndex, out frameCheckPoint);
}
Thread.Sleep(100);
continue;
}
frameInputStream.Position = 0;
frameInputStream.Write(frameList[frameIndex], 0, frameList[frameIndex].Length);
frameInputStream.Position = 0;
frameIndex++;
}
}
finally
{
Monitor.PulseAll(frameIndexLock);
Monitor.Exit(frameIndexLock);
}
try
{
frame = Mp3Frame.LoadFromStream(frameInputStream);
if (frame == null)
{
continue;
}
}
catch (Exception)
{
continue;
}
if (decompressor == null)
{
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2,
frame.FrameLength, frame.BitRate);
decompressor = new AcmMp3FrameDecompressor(waveFormat);
bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
bufferedWaveProvider.BufferDuration = TimeSpan.FromSeconds(20);
volumeProvider = new VolumeWaveProvider16(bufferedWaveProvider);
volumeProvider.Volume = mVolume;
waveOut.Init(volumeProvider);
waveoutInited = true;
}
try
{
int decompressed = decompressor.DecompressFrame(frame, buff, 0);
bufferedWaveProvider.AddSamples(buff, 0, decompressed);
}
catch (NAudio.MmException e)
{
Console.WriteLine(e);
}
Monitor.PulseAll(setMediaLock);
}
}
}
else
{
if (playState == PlayState.playing && playDuration >= totalMilliseconds / 1000)
{
playState = PlayState.mediaEnded;
stop();
}
Thread.Sleep(50);
}
}
}
private void StreamMp3(object state)
{
fullyDownloaded = false;
string url = (string)state;
webRequest = (HttpWebRequest)WebRequest.Create(url);
int metaInt = 0; // blocksize of mp3 data
webRequest.Headers.Clear();
webRequest.Headers.Add("GET", "/ HTTP/1.0");
webRequest.Headers.Add("Icy-MetaData", "1");
webRequest.UserAgent = "WinampMPEG/5.09";
HttpWebResponse resp;
try {
resp = (HttpWebResponse)webRequest.GetResponse();
} catch (WebException e) {
if (e.Status != WebExceptionStatus.RequestCanceled)
{
System.Console.WriteLine(e.Message);
}
return;
}
byte[] buffer =
new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
try {
// read blocksize to find metadata block
metaInt = Convert.ToInt32(resp.GetResponseHeader("icy-metaint"));
} catch {}
IMp3FrameDecompressor decompressor = null;
try {
using (Stream responseStream = resp.GetResponseStream()) {
ReadFullyStream readFullyStream = new ReadFullyStream(responseStream);
readFullyStream.MetaInt = metaInt;
do
{
if (IsBufferNearlyFull)
{
System.Console.WriteLine("Buffer getting full, taking a break");
Thread.Sleep(1000);
}
else
{
Mp3Frame frame;
try {
frame = Mp3Frame.LoadFromStream(readFullyStream);
if (metaInt > 0 && !subbedToEvent)
{
subbedToEvent = true;
readFullyStream.StreamTitleChanged +=
ReadFullyStream_StreamTitleChanged;
}
else if (metaInt <= 0)
{
song_info = "none";
}
} catch (EndOfStreamException) {
fullyDownloaded = true;
// reached the end of the MP3 file / stream
break;
} catch (WebException) {
// probably we have aborted download from the GUI thread
break;
}
if (frame == null)
{
break;
}
if (decompressor == null)
{
// don't think these details matter too much - just help ACM select
// the right codec however, the buffered provider doesn't know what
// sample rate it is working at until we have a frame
decompressor = CreateFrameDecompressor(frame);
bufferedWaveProvider =
new BufferedWaveProvider(decompressor.OutputFormat)
{
BufferDuration = TimeSpan.FromSeconds(
30) // allow us to get well ahead of ourselves
};
// this.bufferedWaveProvider.BufferedDuration = 250;
decomp = true; // hack to tell main Unity Thread to create AudioClip
}
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
} while (playbackState != StreamingPlaybackState.Stopped);
System.Console.WriteLine("Exiting Thread");
// was doing this in a finally block, but for some reason
// we are hanging on response stream .Dispose so never get there
decompressor.Dispose();
readFullyStream.Close();
}
} finally {
if (decompressor != null)
{
decompressor.Dispose();
}
}
}
private void StreamMP3()
{
var webRequest = (HttpWebRequest)WebRequest.Create(_source);
HttpWebResponse resp = null;
try
{
resp = (HttpWebResponse)webRequest.GetResponse();
}
catch (WebException e)
{
if (e.Status != WebExceptionStatus.RequestCanceled)
{
}
return;
}
byte[] buffer = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
IMp3FrameDecompressor decompressor = null;
try
{
using (var responseStream = resp.GetResponseStream())
{
var readFullyStream = new ReadFullyStream(responseStream);
while (!_stopEvent.WaitOne(0, false))
{
if (_bufferedWaveProvider != null && _bufferedWaveProvider.BufferLength - _bufferedWaveProvider.BufferedBytes < _bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
{
//Debug.WriteLine("Buffer getting full, taking a break");
Thread.Sleep(100);
}
else
{
Mp3Frame frame = null;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
// reached the end of the MP3 file / stream
break;
}
catch (WebException)
{
// probably we have aborted download from the GUI thread
break;
}
if (decompressor == null)
{
// don't think these details matter too much - just help ACM select the right codec
// however, the buffered provider doesn't know what sample rate it is working at
// until we have a frame
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2, frame.FrameLength, frame.BitRate);
decompressor = new AcmMp3FrameDecompressor(waveFormat);
this._bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat)
{
BufferDuration = TimeSpan.FromSeconds(5)
};
_waveOut = new DirectSoundOut(1000);
_waveOut.Init(_bufferedWaveProvider);
_waveOut.Play();
_waveOut.PlaybackStopped += wavePlayer_PlaybackStopped;
}
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
//Debug.WriteLine(String.Format("Decompressed a frame {0}", decompressed));
_bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
if (_stopEvent.WaitOne(0, false))
{
break;
}
}
Debug.WriteLine("Exiting");
// was doing this in a finally block, but for some reason
// we are hanging on response stream .Dispose so never get there
if (decompressor != null)
{
decompressor.Dispose();
decompressor = null;
}
}
}
finally
{
if (decompressor != null)
{
decompressor.Dispose();
}
if (_waveOut != null)
{
_waveOut.Stop();
}
}
}
private void StreamMP3(object state)
{
this.fullyDownloaded = false;
string url = (string)state;
webRequest = (HttpWebRequest)WebRequest.Create(url);
HttpWebResponse resp = null;
try
{
resp = (HttpWebResponse)webRequest.GetResponse();
}
catch (WebException e)
{
if (e.Status != WebExceptionStatus.RequestCanceled)
{
ShowError(e.Message);
}
return;
}
byte[] buffer = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
IMp3FrameDecompressor decompressor = null;
try
{
using (var responseStream = resp.GetResponseStream())
{
var readFullyStream = new ReadFullyStream(responseStream);
do
{
if (bufferedWaveProvider != null && bufferedWaveProvider.BufferLength - bufferedWaveProvider.BufferedBytes < bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
{
Debug.WriteLine("Buffer getting full, taking a break");
Thread.Sleep(500);
}
else
{
Mp3Frame frame = null;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
this.fullyDownloaded = true;
// reached the end of the MP3 file / stream
break;
}
catch (WebException)
{
// probably we have aborted download from the GUI thread
break;
}
if (decompressor == null)
{
// don't think these details matter too much - just help ACM select the right codec
// however, the buffered provider doesn't know what sample rate it is working at
// until we have a frame
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2, frame.FrameLength, frame.BitRate);
decompressor = new AcmMp3FrameDecompressor(waveFormat);
this.bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat);
this.bufferedWaveProvider.BufferDuration = TimeSpan.FromSeconds(20); // allow us to get well ahead of ourselves
//this.bufferedWaveProvider.BufferedDuration = 250;
}
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
//Debug.WriteLine(String.Format("Decompressed a frame {0}", decompressed));
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
} while (playbackState != StreamingPlaybackState.Stopped);
Debug.WriteLine("Exiting");
// was doing this in a finally block, but for some reason
// we are hanging on response stream .Dispose so never get there
decompressor.Dispose();
}
}
finally
{
if (decompressor != null)
{
decompressor.Dispose();
}
}
}
private async Task Play(Stream stream)
{
IMp3FrameDecompressor decompressor = null;
var buffer = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
try
{
using var responseStream = stream;
var readFullyStream = new ReadFullyStream(responseStream);
do
{
if (IsBufferNearlyFull)
{
Debug.WriteLine("Buffer getting full, taking a break");
await Task.Delay(500);
}
else
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
fullyDownloaded = true;
// reached the end of the MP3 file / stream
break;
}
if (frame == null)
{
break;
}
if (decompressor == null)
{
// don't think these details matter too much - just help ACM select the right codec
// however, the buffered provider doesn't know what sample rate it is working at
// until we have a frame
decompressor = CreateFrameDecompressor(frame);
bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat)
{
BufferDuration = TimeSpan.FromSeconds(20) // allow us to get well ahead of ourselves
};
//this.bufferedWaveProvider.BufferedDuration = 250;
}
var decompressed = decompressor.DecompressFrame(frame, buffer, 0);
Debug.WriteLine(string.Format("Decompressed a frame {0}", decompressed));
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
} while (playbackState != StreamingPlaybackState.Stopped);
Debug.WriteLine("Exiting");
// was doing this in a finally block, but for some reason
// we are hanging on response stream .Dispose so never get there
decompressor.Dispose();
}
finally
{
decompressor?.Dispose();
}
}
