static void playNode(AudioFileInputNode node)
{
if (node == null)
{
return;
}
node.Reset();
node.Start();
}
private async void MainGraph_QuantumProcessed(AudioGraph sender, object args)
{
try
{
this.Position = mainInputNode.Position;
if (NextJump != null)
{
if (NextJump != null &&
Position >= NextJump.Origin - NextJump.CrossFade &&
Position <= NextJump.Origin &&
!IsFading &&
NextJump.Song == mainSong)
{
IsFading = true;
subInputNode = mainInputNode;
subSong = mainSong;
mainSong = NextJump.TargetSong ?? NextJump.Song;
mainInputNode = await mainSong.Song.CreateNode(graph);
mainInputNode.AddOutgoingConnection(outputNode);
mainInputNode.StartTime = NextJump.TargetTime - (NextJump.Origin - subInputNode.Position);
mainInputNode.OutgoingGain = 0;
mainInputNode.Start();
}
if (IsFading && subInputNode != null)
{
var fadePosition = (NextJump.Origin - subInputNode.Position);
var fadeTime = NextJump.CrossFade;
var percentage = Math.Min(1.0, Math.Max(0.0, fadePosition.TotalSeconds / fadeTime.TotalSeconds));
subInputNode.OutgoingGain = percentage;
mainInputNode.OutgoingGain = 1.0 - percentage;
}
if (Position > NextJump.Origin &&
IsFading && subInputNode != null)
{
mainInputNode.OutgoingGain = 1.0;
subInputNode.Stop();
subInputNode.RemoveOutgoingConnection(outputNode);
subInputNode.Dispose();
subInputNode = null;
subSong = null;
NextJump = NextJump.NextDefaultJump;
IsFading = false;
}
}
}
catch (Exception e)
{
App.Log(e);
Recover();
}
}
// 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( );
}
}
