private ISampleProvider CreateInputStream(string fileName)
{
if (fileName.EndsWith(".wav"))
{
fileStream = OpenWavStream(fileName);
}
else if (fileName.EndsWith(".mp3"))
{
fileStream = new Mp3FileReader(fileName);
}
else
{
throw new InvalidOperationException("Unsupported extension");
}
var inputStream = new SampleChannel(fileStream);
var sampleStream = new NotifyingSampleProvider(inputStream);
sampleStream.Sample += (s, e) => aggregator.Add(e.Left);
return sampleStream;
}
private void _play()
{
/* Audio chain */
// Sampling
_wavesampler = new WaveToSampleProvider(new Wave16ToFloatProvider(_wavebuffer));
// Fading component
_fade = new FadeInOutSampleProvider(_wavesampler);
_fade.BeginFadeIn(1500);
// Notifying component
var _notify = new NotifyingSampleProvider(_fade);
_notify.Sample += new EventHandler<SampleEventArgs>(_notify_Sample);
// Gain adjustment component
_volume = new VolumeSampleProvider(_notify);
_volume.Volume = this.Volume;
// Output
Output.Init(new SampleToWaveProvider16(_volume));
/* Playback loop */
do
{
if (_cancel_play.IsCancellationRequested)
{
Console.WriteLine("[Playback thread] Cancellation requested.");
// Fade out and stop
Console.WriteLine("[Playback thread] Fading out and stopping...");
_fade.BeginFadeOut(500);
Thread.Sleep(500);
Output.Stop();
Console.WriteLine("[Playback thread] Output stopped.");
this.Status = StreamStatus.Stopped;
Console.WriteLine("[Playback thread] Acknowledged as status.");
//_cancel_play_token.ThrowIfCancellationRequested();
//Console.WriteLine("[Playback thread] WARNING: Cancellation token is not cleanly set!");
return;
}
if (Output.PlaybackState != PlaybackState.Playing && _wavebuffer.BufferedDuration.TotalMilliseconds > 2750)
{
// Buffer is filled enough
Console.WriteLine("[Playback thread] Buffer is okay now, start playback!");
this.Status = StreamStatus.Playing;
Output.Play();
}
else if (Output.PlaybackState == PlaybackState.Playing && _wavebuffer.BufferedDuration.TotalMilliseconds < 2250)
{
// Buffer is underrunning
Console.WriteLine("[Playback thread] Buffer is underrunning, pausing playback...");
this.Status = StreamStatus.Buffering;
Output.Pause();
}
if (_bufferThread.Exception != null)
{
Console.WriteLine("[Playback thread] Buffering thread is faulted, aborting playback");
throw new Exception("Buffering thread faulted, aborting playback");
}
Thread.Sleep(100);
}
while (true);
}
/// <summary>
/// Generates the input stream based on what kind of file it is.
/// </summary>
/// <param name="fileName">Name of the file about to be played.</param>
private void CreateInputStream(string fileName)
{
SampleChannel inputStream;
if (fileName.EndsWith(".wav"))
{
readerStream = new WaveFileReader(fileName);
if (readerStream.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
readerStream = WaveFormatConversionStream.CreatePcmStream(readerStream);
readerStream = new BlockAlignReductionStream(readerStream);
}
if (readerStream.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(readerStream.WaveFormat.SampleRate,
16, readerStream.WaveFormat.Channels);
readerStream = new WaveFormatConversionStream(format, readerStream);
}
inputStream = new SampleChannel(readerStream);
}
else if (fileName.EndsWith(".mp3"))
{
readerStream = new Mp3FileReader(fileName);
inputStream = new SampleChannel(readerStream);
}
else
{
throw new InvalidOperationException("Unsupported extension");
}
sampleProvider = new NotifyingSampleProvider(inputStream);
sampleProvider.Sample += (s, e) => aggregator.Add(e.Left, e.Right);
}
private void Start(Audio.Codecs.INetworkChatCodec codec)
{
ShouldTryRestartOutput = false;
Stop();
waveOut = GetWavePlayer();
waveProvider = new BufferedWaveProvider(codec.RecordFormat);
sampleChannel = new SampleChannel(waveProvider, false);
sampleStream = new NotifyingSampleProvider(sampleChannel);
sampleStream.Sample += (s, e) => aggregator.Add(e.Left);
waveOut.Init(sampleStream);
waveOut.Play();
if (LevelManager == null)
LevelManager = new AudioLevelManagerDisconnected();
OutputFormat = codec.RecordFormat.ToString();
}
internal void Stop()
{
if (waveOut != null)
{
waveOut.Stop();
try
{
waveOut.Dispose();
}
catch { }
waveOut = null;
}
waveProvider = null;
sampleChannel = null;
sampleStream = null;
}
private void WaveControl_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (e.Button == MouseButtons.Left) {
stopPlayer();
if (m_Dragging) {
if (cursorEvent != null) {
// Have finished dragging - fire event
cursorEvent.Cursor.FireCursorMoveFinished(cursorEvent);
cursorEvent = null;
}
m_Dragging = false;
} else if(!m_PlayerJustStopped) {
if (m_Wavefile != null) {
if (m_DragStart == null || Math.Abs(e.X - m_DragStart.X) > 5 || Math.Abs(e.Y - m_DragStart.Y) > 5)
return; // Ignore everything except click
float start = m_StartSeconds; // Where to start playing
float end = m_StartSeconds + m_LengthSeconds; // and end
float pixelsPerSecond = Width / m_LengthSeconds;
if (m_Cursors != null) {
// Play only between cursors
for (int i = 0; i < m_Cursors.Length; i++) {
PositionCursor c = m_Cursors[i];
if (!c.Active)
continue;
float x = (c.Position - m_StartSeconds) * pixelsPerSecond;
if (x <= e.X)
start = Math.Max(start, c.Position);
else
end = Math.Min(end, c.Position);
}
}
// If click not near start, start from click position
float sx = (start - m_StartSeconds) * pixelsPerSecond;
if (e.X - sx > 20)
start = m_StartSeconds + e.X / pixelsPerSecond;
m_Wavefile.Position = WaveFormat.SecondsToBytes(start);
NotifyingSampleProvider p = new NotifyingSampleProvider(new OffsetSampleProvider(m_Wavefile) {
Take = new TimeSpan((long)(10000000 * (end - start)))
});
p.Sample += SampleCounter; // To keep track of samples played, for play position cursor
m_SampleCount = (int)(start * WaveFormat.SampleRate); // Play position, in samples
m_Timer.Interval = (int)(1000 / pixelsPerSecond); // Should fire about every pixel
m_Timer.Start();
m_CurrentPlayer = m_Player = new NAudio.Wave.DirectSoundOut();
m_Player.PlaybackStopped += PlaybackStopped;
if(Control.ModifierKeys == Keys.Control) // Play filtered sound
m_Player.Init(new FilteredSampleProvider(p, Properties.Settings.Default.SilenceFilterCentre, Properties.Settings.Default.SilenceFilterQ));
else {
// Play wave file
}
m_Player.Init(p);
m_Player.Play();
Refresh();
}
}
}
m_PlayerJustStopped = false;
}
private static ISampleProvider CreateSampleStream(WaveStream fileStream)
{
var inputStream = new SampleChannel(fileStream);
var sampleStream = new NotifyingSampleProvider(inputStream);
return sampleStream;
}
public MainWindow(string[] args)
{
InitializeComponent();
sliderMinFreq.Maximum = sliderMaxFreq.Value = sliderMaxFreq.Maximum = SampleRate;
if (args.Length >= 1)
{
int.TryParse(args[0], out _inputDeviceNo);
}
if (args.Length >= 2)
{
int.TryParse(args[1], out _outputDeviceNo);
}
/* Input waveform */
IWaveProvider inputWaveform;
if (args.Length >= 3) /* TODO: button for this */
{
_waveInFileStream = new WaveFileReader(args[2]);
if (_waveInFileStream.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
_waveInFileStream = WaveFormatConversionStream.CreatePcmStream(_waveInFileStream);
_waveInFileStream = new BlockAlignReductionStream(_waveInFileStream);
}
if (_waveInFileStream.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(_waveInFileStream.WaveFormat.SampleRate, 16, _waveInFileStream.WaveFormat.Channels);
_waveInFileStream = new WaveFormatConversionStream(format, _waveInFileStream);
}
inputWaveform = new LoopingStream(new WaveChannel32(_waveInFileStream));
}
else
{
_waveInDevice = new WaveIn
{
DeviceNumber = _inputDeviceNo,
WaveFormat = new WaveFormat(SampleRate, 16, 1)
};
_waveInDevice.StartRecording();
inputWaveform = new WaveInProvider(_waveInDevice);
}
/* Input processing pipeline */
ISampleProvider sampleChannel = new SampleChannel(inputWaveform); //TODO: when we're not using recorder any more, this stay as a wave provider, I think
_bandPassProvider = new BandPass2(sampleChannel);
NotifyingSampleProvider sampleStream = new NotifyingSampleProvider(_bandPassProvider);
_polygonSpectrumControl.bp2 = _bandPassProvider;
/* Output */
_waveOutDevice = new WaveOut
{
DeviceNumber = _outputDeviceNo,
Volume = 1
};
_waveOutDevice.Init(new SampleToWaveProvider(sampleStream));
_waveOutDevice.Play();
/* UI Events */
sliderMinFreq.ValueChanged += SliderMinFreqValueChanged;
sliderMaxFreq.ValueChanged += SliderMaxFreqValueChanged;
textBoxPistonDiameter.TextChanged += textBoxPistonDiameter_TextChanged;
textBoxEpsilon.TextChanged += textBoxEpsilon_TextChanged;
UpdateShit();
}
