private void MediaEngine_MediaStateChanged(MediaState state)
{
switch (state)
{
case MediaState.Loading:
this.PlaybackState = PlaybackState.Loading;
break;
case MediaState.Stopped:
this.PlaybackState = PlaybackState.Paused;
break;
case MediaState.Playing:
this.PlaybackState = PlaybackState.Playing;
break;
case MediaState.Error:
this.PlaybackState = PlaybackState.Error_MediaInvalid;
break;
case MediaState.Ended:
this.PlaybackState = PlaybackState.Ended;
break;
}
}
public MediaStateChangedEventArgs(BufferState bufferState, NetworkState networkState, PlaybackState playbackState, SeekState seekState)
{
this.bufferState = bufferState;
this.networkState = networkState;
this.playbackState = playbackState;
this.seekState = seekState;
}
public Form1()
{
InitializeComponent();
m_state = PlaybackState.Closed;
m_pPlayer = new DShowPlayer(panVideoWin, Handle, WM_GRAPH_EVENT);
m_bDrag = false;
}
public static PlayerState? Convert(PlaybackState? inState)
{
if(!inState.HasValue) {
return null;
} else {
return Convert(inState.Value);
}
}
public MediaNotificationManager(MusicService serv)
{
service = serv;
UpdateSessionToken();
notificationColor = ResourceHelper.GetThemeColor(service,
Android.Resource.Attribute.ColorPrimary, Color.DarkGray);
notificationManager = (NotificationManager) service
.GetSystemService(Context.NotificationService);
string pkg = service.PackageName;
pauseIntent = PendingIntent.GetBroadcast(service, RequestCode,
new Intent(ActionPause).SetPackage(pkg), PendingIntentFlags.CancelCurrent);
playIntent = PendingIntent.GetBroadcast(service, RequestCode,
new Intent(ActionPlay).SetPackage(pkg), PendingIntentFlags.CancelCurrent);
previousIntent = PendingIntent.GetBroadcast(service, RequestCode,
new Intent(ActionPrev).SetPackage(pkg), PendingIntentFlags.CancelCurrent);
nextIntent = PendingIntent.GetBroadcast(service, RequestCode,
new Intent(ActionNext).SetPackage(pkg), PendingIntentFlags.CancelCurrent);
notificationManager.CancelAll ();
mCb.OnPlaybackStateChangedImpl = (state) => {
playbackState = state;
LogHelper.Debug (Tag, "Received new playback state", state);
if (state != null && (state.State == PlaybackStateCode.Stopped ||
state.State == PlaybackStateCode.None)) {
StopNotification ();
} else {
Notification notification = CreateNotification ();
if (notification != null) {
notificationManager.Notify (NotificationId, notification);
}
}
};
mCb.OnMetadataChangedImpl = (meta) => {
metadata = meta;
LogHelper.Debug (Tag, "Received new metadata ", metadata);
Notification notification = CreateNotification ();
if (notification != null) {
notificationManager.Notify (NotificationId, notification);
}
};
mCb.OnSessionDestroyedImpl = () => {
LogHelper.Debug (Tag, "Session was destroyed, resetting to the new session token");
UpdateSessionToken ();
};
}
private void PlaybackThread()
{
Exception exception = null;
try
{
DoPlayback();
}
catch (Exception e)
{
exception = e;
}
finally
{
playbackState = PlaybackState.Stopped;
// we're exiting our background thread
RaisePlaybackStoppedEvent(exception);
}
}
/// <summary>
/// Resume playing after a pause from the same position
/// </summary>
private void Resume()
{
if (m_PlaybackState != PlaybackState.Paused)
{
return;
}
MmResult result;
lock (WaveOutLock)
result = WaveInterop.NativeMethods.waveOutRestart(DeviceHandle);
if (result != MmResult.NoError)
{
throw new MmException(result, nameof(WaveInterop.NativeMethods.waveOutRestart));
}
m_PlaybackState = PlaybackState.Playing;
}
private void FillBuffer(IWaveProvider playbackProvider, int frameCount)
{
IntPtr buffer = renderClient.GetBuffer(frameCount);
int readLength = frameCount * bytesPerFrame;
int read = playbackProvider.Read(readBuffer, 0, readLength);
if (read == 0)
{
playbackState = PlaybackState.Stopped;
}
Marshal.Copy(readBuffer, 0, buffer, read);
int actualFrameCount = read / bytesPerFrame;
/*if (actualFrameCount != frameCount)
* {
* Debug.WriteLine(String.Format("WASAPI wanted {0} frames, supplied {1}", frameCount, actualFrameCount ));
* }*/
renderClient.ReleaseBuffer(actualFrameCount, AudioClientBufferFlags.None);
}
/// <summary>
/// Closes the wave device.
/// </summary>
private void CloseWaveOut()
{
if (CallbackEvent != null)
{
m_PlaybackState = PlaybackState.Stopped;
CallbackEvent.Set();
CallbackEvent.Close();
CallbackEvent = null;
}
lock (WaveOutLock)
{
if (DeviceHandle != IntPtr.Zero)
{
WaveInterop.NativeMethods.waveOutClose(DeviceHandle);
DeviceHandle = IntPtr.Zero;
}
}
}
/// <summary>
/// Initializes the specified wave provider.
/// </summary>
/// <param name="waveProvider">The wave provider.</param>
/// <exception cref="System.InvalidOperationException">Can't re-initialize during playback</exception>
public void Init(IWaveProvider waveProvider)
{
if (m_PlaybackState != PlaybackState.Stopped)
{
throw new InvalidOperationException("Can't re-initialize during playback");
}
if (DeviceHandle != IntPtr.Zero)
{
// normally we don't allow calling Init twice, but as experiment, see if we can clean up and go again
// try to allow reuse of this waveOut device
// n.b. risky if Playback thread has not exited
DisposeBuffers();
CloseWaveOut();
}
CallbackEvent = new AutoResetEvent(false);
WaveStream = waveProvider;
var bufferSize = waveProvider.WaveFormat.ConvertLatencyToByteSize((DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
MmResult result;
lock (WaveOutLock)
{
result = WaveInterop.NativeMethods.waveOutOpenWindow(
out DeviceHandle,
DeviceNumber,
WaveStream.WaveFormat,
CallbackEvent.SafeWaitHandle.DangerousGetHandle(),
IntPtr.Zero,
WaveInterop.WaveInOutOpenFlags.CallbackEvent);
}
MmException.Try(result, nameof(WaveInterop.NativeMethods.waveOutOpen));
Buffers = new WaveOutBuffer[NumberOfBuffers];
m_PlaybackState = PlaybackState.Stopped;
for (var n = 0; n < NumberOfBuffers; n++)
{
Buffers[n] = new WaveOutBuffer(DeviceHandle, bufferSize, WaveStream, WaveOutLock);
}
}
/// <summary>
/// Begin playback
/// </summary>
public void Play()
{
if (playbackState == PlaybackState.Stopped)
{
// -------------------------------------------------------------------------------------
// Thread that process samples
// -------------------------------------------------------------------------------------
notifyThread = new Thread(new ThreadStart(PlaybackThreadFunc));
// put this back to highest when we are confident we don't have any bugs in the thread proc
notifyThread.Priority = ThreadPriority.Normal;
notifyThread.IsBackground = true;
notifyThread.Start();
}
lock (m_LockObject)
{
playbackState = PlaybackState.Playing;
}
}
// made non-static so that playing can be stopped here
private void Callback(IntPtr hWaveOut, WaveInterop.WaveMessage uMsg, IntPtr dwInstance, WaveHeader wavhdr, IntPtr dwReserved)
{
if (uMsg == WaveInterop.WaveMessage.WaveOutDone)
{
GCHandle hBuffer = (GCHandle)wavhdr.userData;
WaveOutBuffer buffer = (WaveOutBuffer)hBuffer.Target;
// check that we're not here through pressing stop
if (PlaybackState == PlaybackState.Playing)
{
if (!buffer.OnDone())
{
playbackState = PlaybackState.Stopped;
RaisePlaybackStoppedEvent();
}
}
// n.b. this was wrapped in an exception handler, but bug should be fixed now
}
}
/// <summary>
/// Set the playback state.
/// </summary>
/// <param name="state"></param>
/// <returns></returns>
public static async Task <bool> SetState(PlaybackState state)
{
var request = JsonRpcFactory.CreateRequest(
Playback.MethodSetState,
new
{
new_state = state
}
);
var response = await Playback._query.Exec(request);
if (response.Error != null)
{
return(false);
}
return(true);
}
/// <summary>
/// Begin Playback
/// </summary>
async public void Play()
{
if (this.playbackState != PlaybackState.Playing)
{
if (this.playbackState == PlaybackState.Stopped)
{
this.EventWriterDLL.FlushBuildString(EventWriterDLL.SeverityTypes.Information, 0x01);
this.playbackState = PlaybackState.Playing;
await Task.Delay(10);
await Task.Run(() => PlayThread());
}
else
{
this.playbackState = PlaybackState.Playing;
}
}
}
public void Resume()
{
switch (_playbackState)
{
case PlaybackState.Playing:
return;
case PlaybackState.Paused:
_playbackState = PlaybackState.Playing;
return;
case PlaybackState.Stopped:
if (_client.Start())
{
_playbackState = PlaybackState.Playing;
}
break;
}
}
/// <summary>
/// Initialises the WaveOut device
/// </summary>
/// <param name="waveProvider">WaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
this.waveStream = waveProvider;
int bufferSize = waveProvider.WaveFormat.ConvertLatencyToByteSize((DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutOpenWindow(out hWaveOut, (IntPtr)DeviceNumber, waveStream.WaveFormat, callbackEvent.SafeWaitHandle.DangerousGetHandle(), IntPtr.Zero, WaveInterop.WaveInOutOpenFlags.CallbackEvent);
}
MmException.Try(result, "waveOutOpen");
buffers = new WaveOutBuffer[NumberOfBuffers];
playbackState = PlaybackState.Stopped;
for (int n = 0; n < NumberOfBuffers; n++)
{
buffers[n] = new WaveOutBuffer(hWaveOut, bufferSize, waveStream, waveOutLock);
}
}
/// <summary>
/// Pause the audio
/// </summary>
public void Pause()
{
if (_playbackState != PlaybackState.Playing)
{
return;
}
MmResult result;
_playbackState = PlaybackState.Paused; // set this here, to avoid a deadlock with some drivers
lock (_waveOutLock)
{
result = WaveInterop.waveOutPause(_hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutPause");
}
}
/// <summary>
/// Public method called by the main view to start playing the playlist
/// </summary>
public void play()
{
// If there is no backgroundworker initialized, do that
if (playerThread == null)
{
playerThread = new BackgroundWorker();
playerThread.DoWork += new DoWorkEventHandler(playerThread_DoWork);
playerThread.ProgressChanged += new ProgressChangedEventHandler(playerThread_ProgressChanged);
playerThread.RunWorkerCompleted += new RunWorkerCompletedEventHandler(playerThread_RunWorkerCompleted);
playerThread.WorkerReportsProgress = true;
}
// Set state to playing
this.playState = PlaybackState.Playing;
// start playing the entire queue
playQueue();
}
/// <summary>
/// Resume playing after a pause from the same position
/// </summary>
public void Resume()
{
if (_playbackState != PlaybackState.Paused)
{
return;
}
MmResult result;
lock (_waveOutLock)
{
result = WaveInterop.waveOutRestart(_hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutRestart");
}
_playbackState = PlaybackState.Playing;
}
/// <summary>
/// Begin playback
/// </summary>
public void Play()
{
if (playbackState == PlaybackState.Stopped)
{
// -------------------------------------------------------------------------------------
// Thread that process samples
// -------------------------------------------------------------------------------------
notifyThread = new Thread(new ThreadStart(processSamples));
// put this back to highest when we are confident we don't have any bugs in the thread proc
notifyThread.Priority = ThreadPriority.Normal;
notifyThread.IsBackground = true;
notifyThread.Start();
}
lock (m_LockObject)
{
playbackState = PlaybackState.Playing;
}
}
void SetPlaybackState(PlaybackState ps)
{
foreach (GameObject g in playGraphics)
{
g.SetActive(false);
}
foreach (GameObject g in pauseGraphics)
{
g.SetActive(false);
}
foreach (GameObject g in stopGraphics)
{
g.SetActive(false);
}
switch (ps)
{
case PlaybackState.play:
foreach (GameObject g in playGraphics)
{
g.SetActive(true);
}
break;
case PlaybackState.pause:
foreach (GameObject g in pauseGraphics)
{
g.SetActive(true);
}
break;
case PlaybackState.stop:
foreach (GameObject g in stopGraphics)
{
g.SetActive(true);
}
break;
default:
break;
}
}
/// <summary>
/// Initialises the WaveOut device
/// </summary>
/// <param name="waveProvider">WaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
_waveStream = waveProvider;
var bufferSize = waveProvider.WaveFormat.ConvertLatencyToByteSize((DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
MmResult result;
lock (_waveOutLock)
{
result = _callbackInfo.WaveOutOpen(out _hWaveOut, DeviceNumber, _waveStream.WaveFormat, _callback);
}
MmException.Try(result, "waveOutOpen");
_buffers = new WaveOutBuffer[NumberOfBuffers];
_playbackState = PlaybackState.Stopped;
for (var n = 0; n < NumberOfBuffers; n++)
{
_buffers[n] = new WaveOutBuffer(_hWaveOut, bufferSize, _waveStream, _waveOutLock);
}
}
/// <summary>
/// Initialises the WaveOut device
/// </summary>
/// <param name="waveProvider">WaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
this.waveStream = waveProvider;
int bufferSize = waveProvider.WaveFormat.ConvertLatencyToByteSize((DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutOpenWindow(out hWaveOut, (IntPtr)DeviceNumber, waveStream.WaveFormat, callbackEvent.SafeWaitHandle.DangerousGetHandle(), IntPtr.Zero, WaveInterop.WaveInOutOpenFlags.CallbackEvent);
}
MmException.Try(result, "waveOutOpen");
buffers = new WaveOutBuffer[NumberOfBuffers];
playbackState = PlaybackState.Stopped;
for (int n = 0; n < NumberOfBuffers; n++)
{
buffers[n] = new WaveOutBuffer(hWaveOut, bufferSize, waveStream, waveOutLock);
}
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
PlaybackState state = (PlaybackState)value;
string imagepath;
switch (state)
{
case PlaybackState.Playing:
imagepath = "/Resources/MediaIcons/ThumbButtons/play.png";
break;
case PlaybackState.Paused:
imagepath = "/Resources/MediaIcons/ThumbButtons/pause.png";
break;
default:
return(null);
}
return(imagepath);
}
private void EnqueueBuffers()
{
for (int n = 0; n < NumberOfBuffers; n++)
{
if (!buffers[n].InQueue)
{
if (buffers[n].OnDone())
{
Interlocked.Increment(ref queuedBuffers);
}
else
{
playbackState = PlaybackState.Stopped;
break;
}
//Debug.WriteLine(String.Format("Resume from Pause: Buffer [{0}] requeued", n));
}
// ReSharper disable once RedundantIfElseBlock
}
}
/// <summary>
/// 停止します
/// </summary>
public void Stop()
{
if (this.music == null)
{
throw new NotMusicException();
}
this.timer.Stop();
try {
if (this.music != null)
{
this.music.Stop();
}
}
catch (MmException)
{
throw;
}
this.position = 0;
this.playState = PlaybackState.Stopped;
}
private void _audioPlayer_PlaybackStopped()
{
_playbackState = PlaybackState.Stopped;
PlayPauseImageSource = "../Images/play.png";
CommandManager.InvalidateRequerySuggested();
CurrentTrackPosition = 0;
if (_audioPlayer.PlaybackStopType == AudioPlayer.PlaybackStopTypes.PlaybackStoppedReachingEndOfFile)
{
CurrentlySelectedTrack = Playlist.NextItem(CurrentlyPlayingTrack);
StartPlayback(null);
}
else if (_audioPlayer.PlaybackStopType == AudioPlayer.PlaybackStopTypes.PlaybackStoppedByUser)
{
if (CurrentlySelectedTrack != CurrentlyPlayingTrack)
{
StartPlayback(null);
}
}
}
private void PlaybackThread()
{
Exception exception = null;
try
{
DoPlayback();
}
catch (Exception e)
{
NAudioLogger.Instance.LogError(e.Message);
exception = e;
}
finally
{
playbackState = PlaybackState.Stopped;
// we're exiting our background thread
RaisePlaybackStoppedEvent(exception);
}
}
/// <summary>
/// Start playing the audio from the WaveStream
/// </summary>
public void Play()
{
if (playbackState == PlaybackState.Stopped)
{
playbackState = PlaybackState.Playing;
for (int n = 0; n < NumberOfBuffers; n++)
{
System.Diagnostics.Debug.Assert(buffers[n].InQueue == false, "Adding a buffer that was already queued on play");
if (!buffers[n].OnDone())
{
playbackState = PlaybackState.Stopped;
}
}
}
else if (playbackState == PlaybackState.Paused)
{
Resume();
playbackState = PlaybackState.Playing;
}
}
/// <summary>
/// Resume playing after a pause from the same position
/// </summary>
public void Resume()
{
if (Thread.CurrentThread.ManagedThreadId != waveOutThread.ManagedThreadId)
{
lock (actionQueue)
{
actionQueue.Enqueue(new WaveOutAction(WaveOutFunction.Resume, null));
workAvailable.Set();
}
return;
}
MmResult result = WaveInterop.waveOutRestart(hWaveOut);
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutRestart");
}
playbackState = PlaybackState.Playing;
}
public void TogglePaused()
{
switch (playbackState)
{
case PlaybackState.Paused:
playbackState = PlaybackState.Playing;
waveOut1?.Play();
waveOut2?.Play();
break;
case PlaybackState.Playing:
playbackState = PlaybackState.Paused;
waveOut1?.Pause();
waveOut2?.Pause();
break;
default:
break;
}
}
/// <summary>
/// Stop and reset the WaveOut device
/// </summary>
public void Stop()
{
if (playbackState != PlaybackState.Stopped)
{
// in the call to waveOutReset with function callbacks
// some drivers will block here until OnDone is called
// for every buffer
playbackState = PlaybackState.Stopped; // set this here to avoid a problem with some drivers whereby
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutReset(hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutReset");
}
callbackEvent.Set(); // give the thread a kick, make sure we exit
}
}
/// <summary>
/// Initialises the WaveOut device
/// </summary>
/// <param name="waveProvider">WaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
this.waveStream = waveProvider;
int bufferSize = waveProvider.WaveFormat.ConvertLatencyToByteSize((DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
MmResult result;
lock (waveOutLock)
{
result = callbackInfo.WaveOutOpen(out hWaveOut, DeviceNumber, waveStream.WaveFormat, callback);
}
MmException.Try(result, "waveOutOpen");
buffers = new WaveOutBuffer[NumberOfBuffers];
playbackState = PlaybackState.Stopped;
for (int n = 0; n < NumberOfBuffers; n++)
{
buffers[n] = new WaveOutBuffer(hWaveOut, bufferSize, waveStream, waveOutLock);
}
}
/// <summary>
/// Stop and reset the WaveOut device
/// </summary>
public void Stop()
{
if (Thread.CurrentThread.ManagedThreadId != waveOutThread.ManagedThreadId)
{
lock (actionQueue)
{
actionQueue.Enqueue(new WaveOutAction(WaveOutFunction.Stop, null));
workAvailable.Set();
}
return;
}
playbackState = PlaybackState.Stopped;
buffersQueued = false;
MmResult result = WaveInterop.waveOutReset(hWaveOut);
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutReset");
}
}
public async Task trackAudio()
{
bool playMedia = true;
PlaybackState statePlayback = playerMedia.getPlaybackState();
while (playMedia)
{
if (statePlayback == PlaybackState.Playing)
{
await Task.Delay(1000);
TimeSpan currentAudio = playerMedia.getCurrentTime();
Item item = getTextFromSpeach(currentAudio);
await Controller.displayParametersCurrents(currentAudio, item);
}
else if (statePlayback == PlaybackState.Paused)
{
await Task.Delay(2000);
}
}
}
public override bool UpdateSubTree()
{
state = frameStableClock.IsPaused.Value ? PlaybackState.NotValid : PlaybackState.Valid;
int loops = MaxCatchUpFrames;
while (state != PlaybackState.NotValid && loops-- > 0)
{
updateClock();
if (state == PlaybackState.NotValid)
{
break;
}
base.UpdateSubTree();
UpdateSubTreeMasking(this, ScreenSpaceDrawQuad.AABBFloat);
}
return(true);
}
/// <summary>
/// Starts the playback thread.
/// </summary>
private void StartPlaybackThread()
{
try
{
PerformContinuousPlayback();
}
catch (MmException mex) when(mex.Result == MmResult.WaveHeaderUnprepared)
{
Renderer?.MediaCore?.Log(MediaLogMessageType.Debug, $"{nameof(AudioPlaybackTask)} forced exit requested. {mex.Message}.");
return;
}
catch (Exception e)
{
Renderer?.MediaCore?.Log(MediaLogMessageType.Error, $"{nameof(AudioPlaybackTask)} exiting. {e.Message}. Stack Trace:\r\n{e.StackTrace}");
}
finally
{
try { CallbackEvent?.Set(); } catch { }
m_PlaybackState = PlaybackState.Stopped;
}
}
/// <summary>
/// Begin Playback
/// </summary>
public void Play()
{
switch (playbackState)
{
case PlaybackState.Playing:
return;
case PlaybackState.Paused:
playbackState = PlaybackState.Playing;
return;
case PlaybackState.Stopped:
playbackState = PlaybackState.Playing;
//playThread = new Thread(new ThreadStart(PlayThread));
//playThread.Priority = ThreadPriority.Highest;
//playThread.IsBackground = true;
//playThread.Name = "Pro Audio";
//playThread.Start();
return;
}
}
private void EnqueueBuffers()
{
for (int n = 0; n < NumberOfBuffers; n++)
{
if (!buffers[n].InQueue)
{
if (buffers[n].OnDone())
{
Interlocked.Increment(ref queuedBuffers);
}
else
{
playbackState = PlaybackState.Stopped;
break;
}
//Debug.WriteLine(String.Format("Resume from Pause: Buffer [{0}] requeued", n));
}
else
{
//Debug.WriteLine(String.Format("Resume from Pause: Buffer [{0}] already queued", n));
}
}
}
/// <summary>
/// Initialises the WaveOut device
/// </summary>
/// <param name="waveProvider">WaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
this.waveStream = waveProvider;
int bufferSize = waveProvider.WaveFormat.ConvertLatencyToByteSize((DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
MmResult result;
lock (waveOutLock)
{
result = callbackInfo.WaveOutOpen(out hWaveOut, DeviceNumber, waveStream.WaveFormat, callback);
}
MmException.Try(result, "waveOutOpen");
buffers = new WaveOutBuffer[NumberOfBuffers];
playbackState = PlaybackState.Stopped;
for (int n = 0; n < NumberOfBuffers; n++)
{
buffers[n] = new WaveOutBuffer(hWaveOut, bufferSize, waveStream, waveOutLock);
}
}
/// <summary>
/// Stop playback and flush buffers
/// </summary>
public void Stop()
{
if (playbackState != PlaybackState.Stopped)
{
playbackState = PlaybackState.Stopped;
playThread.Join();
playThread = null;
}
}
/// <summary>
/// Begin Playback
/// </summary>
public void Play()
{
if (playbackState != PlaybackState.Playing)
{
if (playbackState == PlaybackState.Stopped)
{
playThread = new Thread(new ThreadStart(PlayThread));
playbackState = PlaybackState.Playing;
playThread.Start();
}
else
{
playbackState = PlaybackState.Playing;
}
}
}
/// <summary>
/// Initialises the WaveOut device
/// </summary>
/// <param name="waveProvider">WaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
if (playbackState != PlaybackState.Stopped)
{
throw new InvalidOperationException("Can't re-initialize during playback");
}
if (hWaveOut != IntPtr.Zero)
{
// normally we don't allow calling Init twice, but as experiment, see if we can clean up and go again
// try to allow reuse of this waveOut device
// n.b. risky if Playback thread has not exited
DisposeBuffers();
CloseWaveOut();
}
this.callbackEvent = new AutoResetEvent(false);
this.waveStream = waveProvider;
int bufferSize = waveProvider.WaveFormat.ConvertLatencyToByteSize((DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutOpenWindow(out hWaveOut, (IntPtr)DeviceNumber, waveStream.WaveFormat, callbackEvent.SafeWaitHandle.DangerousGetHandle(), IntPtr.Zero, WaveInterop.WaveInOutOpenFlags.CallbackEvent);
}
MmException.Try(result, "waveOutOpen");
buffers = new WaveOutBuffer[NumberOfBuffers];
playbackState = PlaybackState.Stopped;
for (int n = 0; n < NumberOfBuffers; n++)
{
buffers[n] = new WaveOutBuffer(hWaveOut, bufferSize, waveStream, waveOutLock);
}
}
/// <summary>
/// Stop and reset the WaveOut device
/// </summary>
public void Stop()
{
if (playbackState != PlaybackState.Stopped)
{
// in the call to waveOutReset with function callbacks
// some drivers will block here until OnDone is called
// for every buffer
playbackState = PlaybackState.Stopped; // set this here to avoid a problem with some drivers whereby
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutReset(hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutReset");
}
callbackEvent.Set(); // give the thread a kick, make sure we exit
}
}
/// <summary>
/// Resume playing after a pause from the same position
/// </summary>
private void Resume()
{
if (playbackState == PlaybackState.Paused)
{
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutRestart(hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutRestart");
}
playbackState = PlaybackState.Playing;
}
}
/// <summary>
/// Stop playback without flushing buffers
/// </summary>
public void Pause()
{
if (playbackState == PlaybackState.Playing)
{
playbackState = PlaybackState.Paused;
}
}
/// <summary>
/// Stop playback
/// </summary>
public void Stop()
{
// Try and tidy up nicely
if (Monitor.TryEnter(m_LockObject, 50))
{
playbackState = PlaybackState.Stopped;
Monitor.Exit(m_LockObject);
}
else
{
// No joy - abort the thread!
if (notifyThread != null)
{
notifyThread.Abort();
notifyThread = null;
}
}
}
/// <summary>
/// Begin Playback
/// </summary>
public void Play()
{
if (playbackState != PlaybackState.Playing)
{
if (playbackState == PlaybackState.Stopped && !preventNewPlayTaskCreation)
{
playbackState = PlaybackState.Playing;
playTask = Task.Run((Action)PlayThread);
}
else
{
playbackState = PlaybackState.Playing;
}
}
}
public void RefreshPlaybackState()
{
PlaybackState nextPlaybackState = playbackState;
if (sound != null)
{
if (sound.CurrentSubSoundIndex != -1 && sound.CurrentSubSound != null)
{
if (sound.CurrentSubSound.Channel.IsPlaying)
{
if (sound.CurrentSubSound.Channel.Paused)
nextPlaybackState = PlaybackState.Paused;
else nextPlaybackState = PlaybackState.Playing;
}
else nextPlaybackState = PlaybackState.Stopped;
}
else
{
if (sound.Channel != null)
{
if (sound.Channel.IsPlaying)
{
if (sound.Channel.Paused)
nextPlaybackState = PlaybackState.Paused;
else nextPlaybackState = PlaybackState.Playing;
}
else nextPlaybackState = PlaybackState.Stopped;
}
else nextPlaybackState = PlaybackState.None;
}
}
else nextPlaybackState = PlaybackState.None;
if (playbackState != nextPlaybackState)
{
playbackState = nextPlaybackState;
if (PlaybackStateChanged != null)
PlaybackStateChanged(this, new MediaStateChangedEventArgs(BufferState, NetworkState, PlaybackState, SeekState));
}
}
// made non-static so that playing can be stopped here
private void Callback(IntPtr hWaveOut, WaveInterop.WaveMessage uMsg, IntPtr dwInstance, WaveHeader wavhdr, IntPtr dwReserved)
{
if (uMsg == WaveInterop.WaveMessage.WaveOutDone)
{
GCHandle hBuffer = (GCHandle)wavhdr.userData;
WaveOutBuffer buffer = (WaveOutBuffer)hBuffer.Target;
Interlocked.Decrement(ref queuedBuffers);
Exception exception = null;
// check that we're not here through pressing stop
if (PlaybackState == PlaybackState.Playing)
{
// to avoid deadlocks in Function callback mode,
// we lock round this whole thing, which will include the
// reading from the stream.
// this protects us from calling waveOutReset on another
// thread while a WaveOutWrite is in progress
lock (waveOutLock)
{
try
{
if (buffer.OnDone())
{
Interlocked.Increment(ref queuedBuffers);
}
}
catch (Exception e)
{
// one likely cause is soundcard being unplugged
exception = e;
}
}
}
if (queuedBuffers == 0)
{
if (callbackInfo.Strategy == WaveCallbackStrategy.FunctionCallback && playbackState == PlaybackState.Stopped)
{
// the user has pressed stop
// DO NOT raise the playback stopped event from here
// since on the main thread we are still in the waveOutReset function
// Playback stopped will be raised elsewhere
}
else
{
playbackState = PlaybackState.Stopped; // set explicitly for when we reach the end of the audio
RaisePlaybackStoppedEvent(exception);
}
}
}
}
/// <summary>
/// Stop and reset the WaveOut device
/// </summary>
public void Stop()
{
if (playbackState != PlaybackState.Stopped)
{
// in the call to waveOutReset with function callbacks
// some drivers will block here until OnDone is called
// for every buffer
playbackState = PlaybackState.Stopped; // set this here to avoid a problem with some drivers whereby
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutReset(hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutReset");
}
// with function callbacks, waveOutReset will call OnDone,
// and so PlaybackStopped must not be raised from the handler
// we know playback has definitely stopped now, so raise callback
if (callbackInfo.Strategy == WaveCallbackStrategy.FunctionCallback)
{
RaisePlaybackStoppedEvent(null);
}
}
}
/// <summary>
/// Start playing the audio from the WaveStream
/// </summary>
public void Play()
{
if (playbackState == PlaybackState.Stopped)
{
playbackState = PlaybackState.Playing;
Debug.Assert(queuedBuffers == 0, "Buffers already queued on play");
EnqueueBuffers();
}
else if (playbackState == PlaybackState.Paused)
{
EnqueueBuffers();
Resume();
playbackState = PlaybackState.Playing;
}
}
private void FillBuffer(IWaveProvider playbackProvider, int frameCount)
{
IntPtr buffer = renderClient.GetBuffer(frameCount);
int readLength = frameCount*bytesPerFrame;
int read = playbackProvider.Read(readBuffer, 0, readLength);
if (read == 0)
{
playbackState = PlaybackState.Stopped;
}
Marshal.Copy(readBuffer, 0, buffer, read);
int actualFrameCount = read/bytesPerFrame;
/*if (actualFrameCount != frameCount)
{
Debug.WriteLine(String.Format("WASAPI wanted {0} frames, supplied {1}", frameCount, actualFrameCount ));
}*/
renderClient.ReleaseBuffer(actualFrameCount, AudioClientBufferFlags.None);
}
/// <summary>
/// Start playing the audio from the WaveStream
/// </summary>
public void Play()
{
if (this.buffers == null || this.waveStream == null)
{
throw new InvalidOperationException("Must call Init first");
}
if (playbackState == PlaybackState.Stopped)
{
playbackState = PlaybackState.Playing;
callbackEvent.Set(); // give the thread a kick
ThreadPool.QueueUserWorkItem((state) => PlaybackThread(), null);
}
else if (playbackState == PlaybackState.Paused)
{
Resume();
callbackEvent.Set(); // give the thread a kick
}
}
/// <summary>
/// Stop playback and flush buffers
/// </summary>
public void Stop()
{
if (playbackState != PlaybackState.Stopped)
{
playbackState = PlaybackState.Stopped;
}
}
private void PlaybackThread()
{
Exception exception = null;
try
{
DoPlayback();
}
catch (Exception e)
{
exception = e;
}
finally
{
playbackState = PlaybackState.Stopped;
// we're exiting our background thread
RaisePlaybackStoppedEvent(exception);
}
}
/// <summary>
/// Pause Playback
/// </summary>
public void Pause()
{
lock (m_LockObject)
{
playbackState = PlaybackState.Paused;
}
}
private void DoPlayback()
{
while (playbackState != PlaybackState.Stopped)
{
if (!callbackEvent.WaitOne(DesiredLatency))
Debug.WriteLine("WARNING: WaveOutEvent callback event timeout");
// requeue any buffers returned to us
if (playbackState == PlaybackState.Playing)
{
int queued = 0;
foreach (var buffer in buffers)
{
if (buffer.InQueue || buffer.OnDone())
{
queued++;
}
}
if (queued == 0)
{
// we got to the end
this.playbackState = PlaybackState.Stopped;
callbackEvent.Set();
}
}
}
}
/// <summary>
/// Processes the samples in a separate thread.
/// </summary>
private void PlaybackThreadFunc()
{
// Used to determine if playback is halted
bool lPlaybackHalted = false;
bool firstBufferStarted = false;
bytesPlayed = 0;
Exception exception = null;
// Incase the thread is killed
try
{
InitializeDirectSound();
int lResult = 1;
if (PlaybackState == PlaybackState.Stopped)
{
secondaryBuffer.SetCurrentPosition(0);
nextSamplesWriteIndex = 0;
lResult = Feed(samplesTotalSize);
}
// Incase the previous Feed method returns 0
if (lResult > 0)
{
lock (m_LockObject)
{
playbackState = PlaybackState.Playing;
}
secondaryBuffer.Play(0, 0, DirectSoundPlayFlags.DSBPLAY_LOOPING);
var waitHandles = new WaitHandle[] { frameEventWaitHandle1, frameEventWaitHandle2, endEventWaitHandle };
bool lContinuePlayback = true;
while (PlaybackState != PlaybackState.Stopped && lContinuePlayback)
{
// Wait for signals on frameEventWaitHandle1 (Position 0), frameEventWaitHandle2 (Position 1/2)
int indexHandle = WaitHandle.WaitAny(waitHandles, 3 * desiredLatency, false);
// TimeOut is ok
if (indexHandle != WaitHandle.WaitTimeout)
{
// Buffer is Stopped
if (indexHandle == 2)
{
// (Gee) - Not sure whether to stop playback in this case or not!
StopPlayback();
lPlaybackHalted = true;
lContinuePlayback = false;
}
else
{
if (indexHandle == 0)
{
// we're at the beginning of the buffer...
if (firstBufferStarted)
{
// because this notification is based on the *playback" cursor, this should be reasonably accurate
bytesPlayed += samplesFrameSize * 2;
}
}
else
{
firstBufferStarted = true;
}
indexHandle = (indexHandle == 0) ? 1 : 0;
nextSamplesWriteIndex = indexHandle * samplesFrameSize;
// Only carry on playing if we can!
if (Feed(samplesFrameSize) == 0)
{
StopPlayback();
lPlaybackHalted = true;
lContinuePlayback = false;
}
}
}
else
{
// Timed out!
StopPlayback();
lPlaybackHalted = true;
lContinuePlayback = false;
// report this as an error in the Playback Stopped
// seems to happen when device is unplugged
throw new Exception("DirectSound buffer timeout");
}
}
}
}
catch (Exception e)
{
// Do nothing (except report error)
Debug.WriteLine(e.ToString());
exception = e;
}
finally
{
if (!lPlaybackHalted)
{
try
{
StopPlayback();
}
catch (Exception e)
{
Debug.WriteLine(e.ToString());
// don't overwrite the original reason we exited the playback loop
if (exception == null) exception = e;
}
}
lock (m_LockObject)
{
playbackState = PlaybackState.Stopped;
}
bytesPlayed = 0;
// Fire playback stopped event
RaisePlaybackStopped(exception);
}
}
/// <summary>
/// Pause the audio
/// </summary>
public void Pause()
{
if (playbackState == PlaybackState.Playing)
{
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutPause(hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutPause");
}
playbackState = PlaybackState.Paused;
}
}
