private static IMp3FrameDecompressor CreateFrameDecompressor(Mp3Frame frame)
{
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2,
frame.FrameLength, frame.BitRate);
return(new AcmMp3FrameDecompressor(waveFormat));
}
public string Describe(string fileName)
{
var stringBuilder = new StringBuilder();
using (var reader = new Mp3FileReader(fileName))
{
Mp3WaveFormat wf = reader.Mp3WaveFormat;
stringBuilder.AppendFormat("MP3 File WaveFormat: {0} {1}Hz {2} channels {3} bits per sample\r\n",
wf.Encoding, wf.SampleRate,
wf.Channels, wf.BitsPerSample);
stringBuilder.AppendFormat("Extra Size: {0} Block Align: {1} Average Bytes Per Second: {2}\r\n",
wf.ExtraSize, wf.BlockAlign,
wf.AverageBytesPerSecond);
stringBuilder.AppendFormat("ID: {0} Flags: {1} Block Size: {2} Frames per Block: {3}\r\n",
wf.id, wf.flags, wf.blockSize, wf.framesPerBlock
);
stringBuilder.AppendFormat("Length: {0} bytes: {1} \r\n", reader.Length, reader.TotalTime);
stringBuilder.AppendFormat("ID3v1 Tag: {0}\r\n", reader.Id3v1Tag == null ? "None" : reader.Id3v1Tag.ToString());
stringBuilder.AppendFormat("ID3v2 Tag: {0}\r\n", reader.Id3v2Tag == null ? "None" : reader.Id3v2Tag.ToString());
Mp3Frame frame;
while ((frame = reader.ReadNextFrame()) != null)
{
stringBuilder.AppendFormat("{0},{1},{2}Hz,{3},{4}bps, length {5}\r\n",
frame.MpegVersion, frame.MpegLayer,
frame.SampleRate, frame.ChannelMode,
frame.BitRate, frame.FrameLength);
}
}
return(stringBuilder.ToString());
}
protected override void RipLoop(Domain.BufferedStream bufferedStream)
{
_currentFrame = Mp3Frame.LoadFromStream(bufferedStream);
if (_currentFrame == null)
{
throw new RipFailedException($"Failed to stream from '{CurrentStreamSource.StreamUrl}. The stream is either down or not a MP3 compatible stream.");
}
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 = new Mp3WaveFormat(
_currentFrame.SampleRate,
_currentFrame.ChannelMode == ChannelMode.Mono ? 1 : 2,
_currentFrame.FrameLength,
_currentFrame.BitRate
);
_decompressor = new AcmMp3FrameDecompressor(_waveFormat);
//var appSetting = AppSettings.Current;
//if(appSetting.RecordBacktrackSeconds > 0) {
// // ms per frame = (samples per frame / sample rate(in hz)) * 1000
// var backFrameStackSize = (appSetting.RecordBacktrackSeconds * 1000) / (((float)_currentFrame.SampleCount / (float)_currentFrame.SampleRate) * 1000);
// BackFrames = new PipeQueue<FrameDecompressedEventArgs<Mp3Frame>>((int)Math.Ceiling(backFrameStackSize));
//}
}
int decompressed = _decompressor.DecompressFrame(_currentFrame, _buffer, 0);
RaiseFrameDecompressed(_currentFrame, _waveFormat, _decompressor.OutputFormat, _buffer, decompressed);
}
public void CanCreateDmoMp3FrameDecompressor()
{
var mp3Format = new Mp3WaveFormat(44100, 2, 215, 32000);
var frameDecompressor = new DmoMp3FrameDecompressor(mp3Format);
Assert.IsNotNull(frameDecompressor);
}
private IMp3FrameDecompressor CreateFrameDecompressor(Mp3Frame Frame)
{
WaveFormat WaveFormat = new Mp3WaveFormat(Frame.SampleRate, Frame.ChannelMode == ChannelMode.Mono ? 1 : 2,
Frame.FrameLength, Frame.BitRate);
return(new AcmMp3FrameDecompressor(WaveFormat));
}
//сохранить выделенный фрагмент
private void сохранитьВыделенныйФрагментToolStripMenuItem_Click(object sender, EventArgs e) // сохранение фрагмента файла
{
String extension = System.IO.Path.GetExtension(openFileDialog1.FileName).ToLower();
if (extension == ".wav")
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog(); // окно выбора пути сохранения
saveFileDialog1.Filter = "WAV files (*.wav)|*.wav"; // фильтр
saveFileDialog1.FilterIndex = 1;
saveFileDialog1.RestoreDirectory = true;
if (saveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
TrimWav(openFileDialog1.FileName, saveFileDialog1.FileName, hScrollBar1.Value, hScrollBar2.Value);
}
}
if (extension == ".mp3")
{
string fileName = System.IO.Path.GetTempPath() + Guid.NewGuid().ToString() + ".mp3"; // создание временного файла
Mp3FileReader mp3 = new Mp3FileReader(openFileDialog1.FileName); // открытие файла в виде потока байтов
Mp3WaveFormat Format = mp3.Mp3WaveFormat; // создание переменной формата с указанием параметров
var buffer = new byte[mp3.Length]; // создание массива байтов с длиной равной длине файла
byte[] samples = new byte[buffer.Length];
int _bufferSize = Convert.ToInt32(mp3.Length); // переменная, которая содержит длину файла
var read = 0;
read = mp3.Read(buffer, 0, buffer.Length); // чтение файла
write = new WaveFileWriter(fileName, Format); // создание файла с указанием пути и формата
string strMP3Folder = openFileDialog1.FileName;
int count = 1;
using (Mp3FileReader reader = new Mp3FileReader(strMP3Folder))
{
Mp3Frame mp3Frame = reader.ReadNextFrame();
while (mp3Frame != null)
{
if (count > 250) //retrieve a sample of 500 frames
{
return;
}
write.Write(mp3Frame.RawData, 0, mp3Frame.RawData.Length);
count = count + 1;
mp3Frame = reader.ReadNextFrame();
}
}
write.Close(); // закрытие потока записи
SaveFileDialog saveFileDialog1 = new SaveFileDialog(); // окно выбора пути сохранения
saveFileDialog1.Filter = "MP3 files (*.mp3)|*.mp3"; // фильтр
saveFileDialog1.FilterIndex = 1;
saveFileDialog1.RestoreDirectory = true;
if (saveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
File.Copy(fileName, saveFileDialog1.FileName, true); // копирование временного файла в место указанное пользователем
File.Delete(fileName); // удаление временного файла
}
}
}
public static void playMusic(UdpClient privatePort, IPEndPoint privateEP)
{
string mediaFolder = System.IO.Path.Combine(System.Windows.Forms.Application.StartupPath, "MusicLibrary");
byte[] data;
int count1 = 0;
var buffer1 = new byte[16384 * 4];
var nameOfTheSong = privatePort.Receive(ref privateEP);
var startPoint = privatePort.Receive(ref privateEP);
Song sendingSong = null;
try
{
sendingSong = allSongs.Songs.Where(x => x.ToString() == Encoding.ASCII.GetString(nameOfTheSong)).Single();
}
catch
{
var msg = Encoding.ASCII.GetBytes("Error occurred: Couldn't find this song in our library");
privatePort.Send(msg, msg.Length, privateEP);
}
privatePort.Send(Encoding.ASCII.GetBytes("granted"), 7, privateEP);
if (sendingSong != null)
{
int startTime = Int32.Parse(Encoding.ASCII.GetString(startPoint));
Mp3FileReader reader = new Mp3FileReader(mediaFolder + "\\" + sendingSong.Directory);
var b = Encoding.ASCII.GetBytes(reader.TotalTime.ToString());
privatePort.Send(b, b.Length, privateEP);
reader.CurrentTime = TimeSpan.FromSeconds(startTime);
Mp3Frame mp3Frame = reader.ReadNextFrame();
IMp3FrameDecompressor decomp = null;
WaveFormat waveFormat = new Mp3WaveFormat(mp3Frame.SampleRate, mp3Frame.ChannelMode == ChannelMode.Mono ? 1 : 2,
mp3Frame.FrameLength, mp3Frame.BitRate);
decomp = new AcmMp3FrameDecompressor(waveFormat);
int total = 0;
while (mp3Frame != null)
{
data = mp3Frame.RawData;
privatePort.Send(data, data.Length, privateEP);
if (Encoding.ASCII.GetString(privatePort.Receive(ref privateEP)) != "more")
{
break;
}
total += data.Length;
if (count1 % 500 == 0)
{
Console.WriteLine(" Sending Song: " + sendingSong.ToString());
Console.WriteLine("Total packet sent: " + total);
}
count1 = count1 + 1;
mp3Frame = reader.ReadNextFrame();
}
privatePort.Send(Encoding.ASCII.GetBytes("done"), 4, privateEP);
Console.WriteLine("Total packet sent: " + total);
Console.WriteLine("------Stop Sending------");
}
}
/// <summary>
/// Returns an MP3 Frame decompressor from a single frame.
/// </summary>
private static IMp3FrameDecompressor CreateFrameDecompressor(Mp3Frame Frame)
{
// Create the wave format
WaveFormat Format = new Mp3WaveFormat(Frame.SampleRate, Frame.ChannelMode == ChannelMode.Mono ? 1 : 2, Frame.FrameLength, Frame.BitRate);
// And return it as an MP3 frame decompressor
return(new AcmMp3FrameDecompressor(Format));
}
/// <summary>
/// Opens MP3 from a stream rather than a file
/// Will not dispose of this stream itself
/// </summary>
/// <param name="inputStream"></param>
public Mp3FileReader(Stream inputStream)
{
// Calculated as a double to minimize rounding errors
double bitRate;
mp3Stream = inputStream;
id3v2Tag = Id3v2Tag.ReadTag(mp3Stream);
dataStartPosition = mp3Stream.Position;
var mp3Frame = new Mp3Frame(mp3Stream);
sampleRate = mp3Frame.SampleRate;
frameLengthInBytes = mp3Frame.FrameLength;
bitRate = mp3Frame.BitRate;
xingHeader = XingHeader.LoadXingHeader(mp3Frame);
// If the header exists, we can skip over it when decoding the rest of the file
if (xingHeader != null)
{
dataStartPosition = mp3Stream.Position;
}
mp3DataLength = mp3Stream.Length - dataStartPosition;
// try for an ID3v1 tag as well
mp3Stream.Position = mp3Stream.Length - 128;
var tag = new byte[128];
mp3Stream.Read(tag, 0, 3);
if (tag[0] == 'T' && tag[1] == 'A' && tag[2] == 'G')
{
id3v1Tag = tag;
mp3DataLength -= 128;
}
mp3Stream.Position = dataStartPosition;
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.
bitRate = (mp3DataLength * 8.0 / TotalSeconds());
mp3Stream.Position = dataStartPosition;
Mp3WaveFormat = new Mp3WaveFormat(sampleRate, mp3Frame.ChannelMode == ChannelMode.Mono ? 1 : 2, frameLengthInBytes,
(int)bitRate);
decompressor = new AcmMp3FrameDecompressor(Mp3WaveFormat); // new DmoMp3FrameDecompressor(this.Mp3WaveFormat);
waveFormat = decompressor.OutputFormat;
bytesPerSample = (decompressor.OutputFormat.BitsPerSample) / 8 * decompressor.OutputFormat.Channels;
// no MP3 frames have more than 1152 samples in them
// some MP3s I seem to get double
decompressBuffer = new byte[1152 * bytesPerSample * 2];
}
public void Play()
{
byte[] buffer = new byte[RequestConstants.DepressLength]; //[16384 * 4]; // needs to be big enough to hold a decompressed frame
while (true)
{
while (RStream.Length == 0 && (IsPlaying || RStream.Length > PlayNotifySize))
{
IsPlaying = true;
//播放流程待优化
Mp3Frame frame = null;
if (bufferedWaveProvider != null && bufferedWaveProvider.BufferLength - bufferedWaveProvider.BufferedBytes < bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
{
Thread.Sleep(500);
continue;
}
try
{
RStream.Position = PlayPosition;
frame = Mp3Frame.LoadFromStream(RStream);
PlayPosition += frame.FrameLength;
Parent.Log.WriteLog(string.Format("目标播放至{0},{1}", PlayPosition, DateTime.Now.ToString()));
if (frame == null)
{
//出现错误
IsPlaying = false;
throw new NotImplementedException();
}
}
catch (Exception)
{
Parent.Log.WriteLog("缓冲中");
IsPlaying = false;
break;
}
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);
_waveOut.Init(bufferedWaveProvider);
_waveOut.Play();
}
int decompressed = decompressor.DecompressFrame(frame, buffer, 0);
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
if (Stopped)
{
RStream = new MemoryStream();
break;
}
Thread.Sleep(200);
}
}
protected override void RipLoopCleanup()
{
if (_decompressor != null)
{
_decompressor.Dispose();
_decompressor = null;
}
_waveFormat = null;
_currentFrame = null;
}
private IMp3FrameDecompressor CreateFrameDeCompressor()
{
if (_reader == null)
{
throw new ArgumentNullException(nameof(_reader));
}
Id3v2Tag.ReadTag(_reader); // read tag data in from begin of stream
_dataStartPosition = _reader.Position;
var firstFrame = Mp3Frame.LoadFromStream(_reader);
if (firstFrame == null)
{
throw new InvalidDataException("Invalid MP3 file - no MP3 Frames Detected");
}
double bitRate = firstFrame.BitRate;
var xingHeader = XingHeader.LoadXingHeader(firstFrame);
// If the header exists, we can skip over it when decoding the rest of the file
if (xingHeader != null)
{
_dataStartPosition = _reader.Position;
}
// workaround for a longstanding issue with some files failing to load
// because they report a spurious sample rate change
var secondFrame = Mp3Frame.LoadFromStream(_reader);
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;
}
// 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);
var decompressor = new AcmMp3FrameDecompressor(Mp3WaveFormat);
_decompressBuffer = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
MaxPosition = _reader.Length - _dataStartPosition;
Duration = TimeSpan.FromSeconds((double)MaxPosition / Mp3WaveFormat.AverageBytesPerSecond);
return(decompressor);
}
private int DecompressFrame(Mp3Frame frame, byte[] buffer)
{
// decode frame
if (_decompressor == null)
{
WaveFormat waveFormat = new Mp3WaveFormat(frame.SampleRate, frame.ChannelMode == ChannelMode.Mono ? 1 : 2, frame.FrameLength, frame.BitRate);
_decompressor = new AcmMp3FrameDecompressor(waveFormat);
_waveProvider = new BufferedWaveProvider(_decompressor.OutputFormat);
_waveProvider.BufferDuration = TimeSpan.FromSeconds(5);
_channels = _waveProvider.WaveFormat.Channels;
_sampleProvider = _waveProvider.ToSampleProvider();
}
return(_decompressor.DecompressFrame(frame, buffer, 0));
}
/// <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);
}
public void WindowsMediaMp3DecoderSupportsStereoMp3()
{
WaveFormat waveFormat = new Mp3WaveFormat(44100, 2, 0, 32000);
Assert.IsTrue(IsInputFormatSupported(waveFormat));
}
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);
}
private void StreamMP3(object state)
{
fullyDownloaded = false;
string url = (string)state;
webRequest = (HttpWebRequest)WebRequest.Create(url); //why HttpWebRequest instead of WebRequest
HttpWebResponse response;
try
{
response = (HttpWebResponse)webRequest.GetResponse();
}
catch (WebException e)
{
if (e.Status != WebExceptionStatus.RequestCanceled)
{
throw;
}
return;
}
byte[] buffer = new byte[16384 * 4]; //how to calc this number?
IMp3FrameDecompressor decompressor = null;
try
{
using (Stream responseStream = response.GetResponseStream())
{
var readFullyStream = new ReadFullyStream(responseStream);
do
{
if (bufferedWaveProvider != null &&
bufferedWaveProvider.BufferLength - bufferedWaveProvider.BufferedBytes <
bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
{
//buffer getting full
Thread.Sleep(500);
}
else
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(readFullyStream);
}
catch (EndOfStreamException)
{
fullyDownloaded = true; //file or stream reach end
break;
}
catch (WebException)
{
break;
}
if (decompressor == null)
{
WaveFormat format = new Mp3WaveFormat(frame.SampleRate,
frame.ChannelMode == ChannelMode.Mono ? 1 : 2,
frame.FrameLength, frame.BitRate);
decompressor = new AcmMp3FrameDecompressor(format);
bufferedWaveProvider = new BufferedWaveProvider(decompressor.OutputFormat)
{
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();
}
}
}
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();
}
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();
}
//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();
}
public static void receivingSong()
{
waveOut = new WaveOut();
decomp = null;
int count = 0;
var buffer = new byte[16384 * 4];
// then receive data
do
{
//if(bufferedWaveProvider != null &&
// bufferedWaveProvider.BufferLength - bufferedWaveProvider.BufferedBytes
// < bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
if (bufferedWaveProvider != null && bufferedWaveProvider.BufferedDuration.TotalSeconds > 10)
{
Thread.Sleep(1000);
}
var receivedData = client.Receive(ref ep);
if (Encoding.ASCII.GetString(receivedData) == "done")
{
break;
}
else
{
client.Send(Encoding.ASCII.GetBytes("more"), 4);
}
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;
// allow us to get well ahead of ourselves
//this.bufferedWaveProvider.BufferedDuration = 250;
}
if (bufferedWaveProvider.BufferedDuration.TotalSeconds > 5 && waveOut.PlaybackState == PlaybackState.Stopped && buffering == true)
{
waveOut.Init(bufferedWaveProvider);
waveOut.Play();
//ThreadStart play = new ThreadStart(playSong);
//Thread playThread = new Thread(play);
//playThread.Start();
}
int decompressed = decomp.DecompressFrame(frame, buffer, 0);
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
count++;
} while (buffering);
}
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();
}
}
}
public void CanCreateDmoMp3FrameDecompressor()
{
Mp3WaveFormat mp3Format = new Mp3WaveFormat(44100, 2, 215, 32000);
DmoMp3FrameDecompressor frameDecompressor = new DmoMp3FrameDecompressor(mp3Format);
}
/// <summary>
/// Opens MP3 from a stream rather than a file
/// Will not dispose of this stream itself
/// </summary>
/// <param name="inputStream">The incoming stream containing MP3 data</param>
/// <param name="frameDecompressorBuilder">Factory method to build a frame decompressor</param>
public Mp3Reader(Stream inputStream, FrameDecompressorBuilder frameDecompressorBuilder)
{
// Calculated as a double to minimize rounding errors
mp3Stream = inputStream;
id3v2Tag = Id3v2Tag.ReadTag(mp3Stream);
dataStartPosition = mp3Stream.Position;
var firstFrame = Mp3Frame.LoadFromStream(mp3Stream);
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;
}
this.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;
this.mp3DataLength -= 128;
}
mp3Stream.Position = dataStartPosition;
// create a temporary MP3 format before we know the real bitrate
this.Mp3WaveFormat = new Mp3WaveFormat(firstFrame.SampleRate, firstFrame.ChannelMode == ChannelMode.Mono ? 1 : 2, firstFrame.FrameLength, (int)bitRate);
CreateTableOfContents();
this.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.
bitRate = (mp3DataLength * 8.0 / TotalSeconds());
mp3Stream.Position = dataStartPosition;
// now we know the real bitrate we can create an accurate
this.Mp3WaveFormat = new Mp3WaveFormat(firstFrame.SampleRate, firstFrame.ChannelMode == ChannelMode.Mono ? 1 : 2, firstFrame.FrameLength, (int)bitRate);
decompressor = frameDecompressorBuilder(Mp3WaveFormat);
this.waveFormat = decompressor.OutputFormat;
this.bytesPerSample = (decompressor.OutputFormat.BitsPerSample) / 8 * decompressor.OutputFormat.Channels;
// no MP3 frames have more than 1152 samples in them
// some MP3s I seem to get double
this.decompressBuffer = new byte[1152 * bytesPerSample * 2];
}
private void DecompressFrames()
{
IMp3FrameDecompressor decompressor = null;
IWavePlayer waveOut = null;
try
{
BufferedWaveProvider bufferedWaveProvider = null;
var buffer = new byte[16384 * 4]; // needs to be big enough to hold a decompressed frame
var firstLoop = true;
do
{
//WaveBuffer getting full, taking a break
if (bufferedWaveProvider != null && bufferedWaveProvider.BufferLength - bufferedWaveProvider.BufferedBytes < bufferedWaveProvider.WaveFormat.AverageBytesPerSecond / 4)
{
Thread.Sleep(500);
}
//StreamBuffer empty, taking a break
else if (stream.Length < 16384 * 2)
{
Thread.Sleep(500);
}
else
{
Mp3Frame frame;
try
{
frame = Mp3Frame.LoadFromStream(stream);
}
catch (EndOfStreamException)
{
break;
}
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)
{
BufferDuration = TimeSpan.FromSeconds(5)
};
// allow us to get well ahead of ourselves
}
var decompressed = decompressor.DecompressFrame(frame, buffer, 0);
if (decompressed > 0)
{
bufferedWaveProvider.AddSamples(buffer, 0, decompressed);
}
if (firstLoop)
{
firstLoop = false;
waveOut = CreateWaveOut();
if (onWaveProviderCreated != null)
{
var provider = onWaveProviderCreated(bufferedWaveProvider);
waveOut.Init(provider);
}
waveOut.Play();
}
}
} while (IsPlaying);
}
finally
{
if (waveOut != null)
{
waveOut.Stop();
waveOut.Dispose();
}
if (decompressor != null)
{
decompressor.Dispose();
}
}
}
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_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);
}
}
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 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);
}
}
}
