/// <summary>
/// cTor: Copy constructor
/// </summary>
/// <param name="other"></param>
public SoundBite(SoundBite other)
{
this.Melody = other.Melody;
this.Tone = other.Tone;
this.Duration = other.Duration;
this.Loops = other.Loops;
this.Volume = other.Volume;
this.SpeedFact = other.SpeedFact;
}
/// <summary>
/// Change the sound to play
/// </summary>
/// <param name="soundBite">The SoundBite to play from now on</param>
public void AddSoundBite(SoundBite soundBite)
{
if (!this.IsBusy)
{
throw new InvalidOperationException("PingLib-Loop: ERROR - Cannot add SoundBites when not initialized");
}
lock ( _soundBiteLock ) {
_soundBite = new SoundBite(soundBite);
}
}
/// <summary>
/// Asynchronously plays a sound.
/// Waiting for this will not wait for when the Play has ended
/// but rather when the trigger for Output was given
/// There is currently no event available to detect end of Play
/// </summary>
/// <param name="soundBite">The SoundBite to play</param>
public async Task PlayAsync(SoundBite soundBite)
{
if (!_canPlay)
{
return; // Cannot
}
if (_playing)
{
return; // no concurrent playing
}
await PlayAsyncLow(soundBite);
}
/// <summary>
/// Add a sound to play
/// </summary>
/// <param name="soundBite">The SoundBite to play</param>
public void AddSoundBite(SoundBite soundBite)
{
if (!this.IsBusy)
{
throw new InvalidOperationException("PingLib-Sound: ERROR Cannot add SoundBites when not initialized");
}
lock ( _soundBites ) {
_soundBites.Enqueue(soundBite);
// restart if needed
if (_soundBites.Count == 1)
{
_workerWaitHandle.Set( );
}
}
}
/// <summary>
/// Clear the current Word queue
/// </summary>
public void ClearSoundBites( )
{
lock ( _soundBiteLock ) {
_soundBite = new SoundBite( ); // Load a default (which is Silence in 1sec duration tones)
}
}
// Async Speak output of a text
private async Task PlayAsyncLow(SoundBite soundBite)
{
_playing = true; // locks additional calls for Speak until finished talking this bit
if (!_canPlay || _audioGraph == null || _deviceOutputNode == null)
{
LOG.LogError($"PlayAsyncLow: Some items do not exist: cannot play..\n [{_audioGraph}] [{_deviceOutputNode}]");
await EndOfSound( );
return;
}
// don't reload if the sound is already in use
if (soundBite.Melody != _soundInUse?.Melody)
{
// if a prev. Node exists, remove it
if (_fileInputNode != null)
{
_audioGraph.Stop( );
_fileInputNode.FileCompleted -= _fileInputNode_FileCompleted;
_fileInputNode.RemoveOutgoingConnection(_deviceOutputNode);
_fileInputNode.Dispose( );
_fileInputNode = null;
}
// set new sound
_sound = _installedSounds.Where(x => x.Melody == soundBite.Melody).FirstOrDefault( );
if (_sound == null)
{
LOG.LogError($"PlayAsyncLow: Melody has no Audiofile: {soundBite.Melody} - cannot play");
await EndOfSound( );
return;
}
StorageFile file = await StorageFile.CreateStreamedFileAsync($"{_sound.Id}.{_sound.SType}", StreamedFileWriter, null);
// create the InputNode
var resultAF = await _audioGraph.CreateFileInputNodeAsync(file);
if (resultAF.Status != AudioFileNodeCreationStatus.Success)
{
LOG.LogError($"PlayAsyncLow: AudioFileNodeCreationStatus creation: {resultAF.Status}"
+ $"\nExtError: {resultAF.ExtendedError}");
await EndOfSound( );
return;
}
_fileInputNode = resultAF.FileInputNode;
_fileInputNode.FileCompleted += _fileInputNode_FileCompleted;
_fileInputNode.AddOutgoingConnection(_deviceOutputNode);
_audioGraph.Start( );
_soundInUse = _sound.AsCopy( );
}
// we capture problems through Exceptions here - the settings and restrictions seem not complete in the Docs
try {
// Play it
// cannot start after prev end - so set it null and seek to start of file
_fileInputNode.StartTime = null;
_fileInputNode.EndTime = null; // cannot start after prev end - so set it null
_fileInputNode.Seek(new TimeSpan(0)); // have to seek to Start, we cannot assign a StartTime before the current Position
// only now we can set any new start and end... (that is not in the documents...)
_fileInputNode.StartTime = TimeSpan.FromSeconds(soundBite.Tone * _soundInUse.ToneStep_sec);
_fileInputNode.EndTime = _fileInputNode.StartTime + TimeSpan.FromSeconds((soundBite.Duration < 0) ? _soundInUse.ToneDuration_sec : soundBite.Duration);
_fileInputNode.OutgoingGain = soundBite.Volume;
_fileInputNode.LoopCount = (int)soundBite.Loops; // counts down in the Completed Callback - track completeness there (not in docu...)
_fileInputNode.PlaybackSpeedFactor = soundBite.SpeedFact;
// Plays in the current Thread - cannot be waited for in the same thread
_fileInputNode.Start( );
//_audioGraph.Start( );
}
catch (Exception e) {
LOG.LogError($"PlayAsyncLow: Sample Setup caused an Exception\n{e.Message}");
await EndOfSound( );
}
}
/// <summary>
/// Synchronously plays soundBites
/// Audio output is the default output device
/// NOT YET IMPLEMENTED behaves the same as PlayAsync
/// </summary>
/// <param name="soundBite">The SoundBite to play</param>
public void Play(SoundBite soundBite)
{
_player.AddSoundBite(soundBite);
// TODO
}
/// <summary>
/// Asynchronously plays soundBites
/// Audio output is the default output device
/// This is not an awaitable method
/// </summary>
/// <param name="soundBite">The SoundBite to play (max 10sec supported)</param>
public void PlayAsync(SoundBite soundBite)
{
_player.AddSoundBite(soundBite);
}