/// <summary>
/// Creates an instance of AudioGraph and sets io_progress
/// </summary>
public async Task <CreateAudioGraphResult> Init(
Progress <double> progress)
{
// set io_progress var to show progress of input-output
_ioProgress = progress;
// initialize settings for AudioGraph
var settings =
new AudioGraphSettings(
AudioRenderCategory.Media
);
// if audioGraph was previously created
if (_audioGraph != null)
{
_audioGraph.Dispose();
_audioGraph = null;
}
var result =
await AudioGraph.CreateAsync(settings);
if (result.Status == AudioGraphCreationStatus.Success)
{
_audioGraph = result.Graph;
}
return(result);
}
private void Recover()
{
App.Log("Recover MediaPlayer");
graph.Stop();
try
{
mainInputNode.Dispose();
}
catch (Exception) { }
try
{
subInputNode.Dispose();
}
catch (Exception) { }
try
{
outputNode.Dispose();
}
catch (Exception) { }
mainInputNode = null;
subInputNode = null;
outputNode = null;
mainSong = null;
subSong = null;
try
{
graph.Dispose();
}
catch (Exception) { }
graph = null;
Init();
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
if (graph != null)
{
graph.Dispose();
}
}
public void Stop()
{
m_audioDataMutex.WaitOne();
m_isRunning = false;
m_isFlushing = false;
if (m_audioGraph != null)
{
m_audioGraph.Stop();
}
if (m_deviceOutputNode != null)
{
m_deviceOutputNode.Dispose();
m_deviceOutputNode = null;
}
if (m_frameInputNode != null)
{
m_frameInputNode.Dispose();
m_frameInputNode = null;
}
if (m_audioGraph != null)
{
m_audioGraph.Dispose();
m_audioGraph = null;
}
m_audioData = null;
m_audioDataMutex.ReleaseMutex();
}
public void Dispose()
{
if (isInitialized)
{
audioGraph.Dispose();
}
}
public async Task <bool> InitializeAudioGraphAsync()
{
var audioGraphSettings = new AudioGraphSettings(AudioRenderCategory.Media);
var result = await AudioGraph.CreateAsync(audioGraphSettings);
LastStatus = result.Status.ToString();
if (result.Status != AudioGraphCreationStatus.Success)
{
return(false);
}
_audioGraph = result.Graph;
_audioGraph.UnrecoverableErrorOccurred += (sender, args) => OnErrorOccurred(args);
var outputResult = await _audioGraph.CreateDeviceOutputNodeAsync();
LastStatus = outputResult.Status.ToString();
if (outputResult.Status != AudioDeviceNodeCreationStatus.Success)
{
_audioGraph.Dispose();
return(false);
}
_outputNode = outputResult.DeviceOutputNode;
CreateEchoEffect();
CreateLimiterEffect();
CreateReverbEffect();
CreateEqualizerEffect();
return(true);
}
//
//
//
//private async Task CreateAudioGraphAsync()
//{
// audGraphResult = await AudioGraph.CreateAsync(audGraphSettings);
// var b = 0;
//}
//
//
//
//private async Task CreateAudioGraphDeviceOutputNodeAsync()
//{
// deviceOutputNodeResult = await audGraph.CreateDeviceOutputNodeAsync();
//}
//
//
//
//private async Task CreateAudioGraphDeviceInputNodeAsync()
//{
// deviceInputNodeResult = await audGraph.CreateDeviceInputNodeAsync(MediaCategory.Other);
//}
//
//
//
public void Dispose()
{
if (audGraph != null)
{
audGraph.Dispose();
}
}
public void Dispose()
{
WaveformRenderer = null;
graph?.Dispose();
fileInputNode?.Dispose();
deviceOutput?.Dispose();
}
/// <summary>
/// Stops the audio stream.
/// </summary>
public Task Stop()
{
if (Active)
{
Active = false;
outputNode?.Stop();
audioGraph?.Stop();
OnActiveChanged?.Invoke(this, false);
}
outputNode?.Dispose();
outputNode = null;
if (audioGraph != null)
{
audioGraph.QuantumStarted -= Graph_QuantumStarted;
audioGraph.UnrecoverableErrorOccurred -= Graph_UnrecoverableErrorOccurred;
audioGraph.Dispose();
audioGraph = null;
}
return(Task.CompletedTask);
}
// Init the AudioGraph
// despite the Aync methods - this will exec synchronously to get the InitPhase only get done when all is available
private void InitAudioGraph( )
{
LOG.Log("InitAudioGraph: Begin");
if (!_canPlay)
{
LOG.Log("InitAudioGraph: Canceled with _canPlay = false");
return; // cannot even try..
}
// MUST WAIT UNTIL all items are created, else one may call Play too early...
// cleanup existing items
if (_deviceOutputNode != null)
{
_deviceOutputNode.Dispose( ); _deviceOutputNode = null;
}
if (_audioGraph != null)
{
_audioGraph.Dispose( ); _audioGraph = null;
}
// Create an AudioGraph
AudioGraphSettings settings = new AudioGraphSettings(_renderCat)
{
PrimaryRenderDevice = null, // If PrimaryRenderDevice is null, the default playback device will be used.
MaxPlaybackSpeedFactor = 2, // should preserve some memory
};
// We await here the execution without providing an async method ...
var resultAG = WindowsRuntimeSystemExtensions.AsTask(AudioGraph.CreateAsync(settings));
resultAG.Wait( );
if (resultAG.Result.Status != AudioGraphCreationStatus.Success)
{
LOG.LogError($"InitAudioGraph: Failed to create AudioGraph with RenderCategory: {_renderCat}");
LOG.LogError($"InitAudioGraph: AudioGraph creation: {resultAG.Result.Status}, TaskStatus: {resultAG.Status}"
+ $"\nExtError: {resultAG.Result.ExtendedError}");
_canPlay = false;
return;
}
_audioGraph = resultAG.Result.Graph;
LOG.Log($"InitAudioGraph: AudioGraph: [{_audioGraph.EncodingProperties}]");
// Create a device output node
// The output node uses the PrimaryRenderDevice of the audio graph.
// We await here the execution without providing an async method ...
var resultDO = WindowsRuntimeSystemExtensions.AsTask(_audioGraph.CreateDeviceOutputNodeAsync());
resultDO.Wait( );
if (resultDO.Result.Status != AudioDeviceNodeCreationStatus.Success)
{
// Cannot create device output node
LOG.LogError($"InitAudioGraph: DeviceOutputNode creation: {resultDO.Result.Status}, TaskStatus: {resultDO.Status}"
+ $"\nExtError: {resultDO.Result.ExtendedError}");
_canPlay = false;
return;
}
_deviceOutputNode = resultDO.Result.DeviceOutputNode;
LOG.Log($"InitAudioGraph: DeviceOutputNode: [{_deviceOutputNode.Device}]");
LOG.Log($"InitAudioGraph: InitAudioGraph-END");
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
// Destroy the graph if the page is naviated away from
if (graph != null)
{
graph.Dispose();
}
}
public void Stop()
{
if (m_audioGraph != null)
{
m_audioGraph.Stop();
m_audioGraph.Dispose();
m_audioGraph = null;
}
}
/// <summary>
/// Disposes the AudioGraph and resets the properties.
/// </summary>
public static void ResetMicrophoneInput()
{
graph.Dispose();
isDisposed = true;
isListing = false;
isCreating = false;
stopOnCreation = false;
}
// <SnippetUnrecoverableError>
private void AudioGraph_UnrecoverableErrorOccurred(AudioGraph sender, AudioGraphUnrecoverableErrorOccurredEventArgs args)
{
if (sender == audioGraph && args.Error != AudioGraphUnrecoverableError.None)
{
Debug.WriteLine("The audio graph encountered and unrecoverable error.");
audioGraph.Stop();
audioGraph.Dispose();
InitAudioGraph();
}
}
/// <summary>
/// Handles AudioGraph errors (e.g. device change) and attempts to restart playback from same position
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private async void Graph_UnrecoverableErrorOccurred(AudioGraph sender, AudioGraphUnrecoverableErrorOccurredEventArgs args)
{
Console.WriteLine(String.Format("Unrecoverable Error Occurred, restaring: {0}", args.Error.ToString()));
TimeSpan CurrentPlayPosition = currentAudioFileInputNode != null ? currentAudioFileInputNode.Position : TimeSpan.Zero;
sender.Dispose();
StartButtonEnabled = false;
StopButtonEnabled = false;
await LoadAudioFile(CurrentPlayPosition);
}
public void Dispose()
{
if (fixNode != null)
{
fixNode.Dispose();
}
if (errorNode != null)
{
errorNode.Dispose();
}
foreach (var node in typingNodes)
{
if (node != null)
{
node.Dispose();
}
}
foreach (var node in spaceNodes)
{
if (node != null)
{
node.Dispose();
}
}
if (backspaceNode != null)
{
backspaceNode.Dispose();
}
if (finishedNode != null)
{
finishedNode.Dispose();
}
if (deviceOutputNode != null)
{
deviceOutputNode.Dispose();
}
if (audioGraph != null)
{
audioGraph.Dispose();
}
GC.SuppressFinalize(this);
}
public void Stop()
{
if (graph == null)
{
return;
}
graph.Stop();
graph.Dispose();
graph = null;
}
private async Task ResetAudioGraph()
{
if (graph != null)
{
graph.Stop();
graph.Dispose();
}
await CreateAudioGraph();
}
private async Task CreateAudioGraph()
{
if (graph != null)
{
graph.Dispose();
}
AudioGraphSettings settings = new AudioGraphSettings(AudioRenderCategory.Media);
settings.QuantumSizeSelectionMode = QuantumSizeSelectionMode.SystemDefault;
CreateAudioGraphResult result = await AudioGraph.CreateAsync(settings);
if (result.Status != AudioGraphCreationStatus.Success)
{
// Cannot create graph
return;
}
graph = result.Graph;
// Create a device input node using the default audio input device (manifest microphone!!!!)
CreateAudioDeviceInputNodeResult deviceInputNodeResult = await graph.CreateDeviceInputNodeAsync(MediaCategory.Other);
if (deviceInputNodeResult.Status != AudioDeviceNodeCreationStatus.Success)
{
// Cannot create device input node
return;
}
deviceInputNode = deviceInputNodeResult.DeviceInputNode;
//creating file
StorageFolder storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
StorageFile file = await storageFolder.CreateFileAsync("sample.wav", Windows.Storage.CreationCollisionOption.ReplaceExisting);
path = file.Path.ToString();
MediaEncodingProfile fileProfile = MediaEncodingProfile.CreateWav(AudioEncodingQuality.Medium);
// Operate node at the graph format, but save file at the specified format
CreateAudioFileOutputNodeResult fileOutputNodeResult = await graph.CreateFileOutputNodeAsync(file, fileProfile);
if (fileOutputNodeResult.Status != AudioFileNodeCreationStatus.Success)
{
// FileOutputNode creation failed
return;
}
fileOutputNode = fileOutputNodeResult.FileOutputNode;
// Connect the input node to both output nodes
deviceInputNode.AddOutgoingConnection(fileOutputNode);
}
public async Task <string> EndRecordAsync()
{
_graph.Stop();
await _outputNode.FinalizeAsync();
_outputNode = null;
_graph.Dispose();
_graph = null;
return(_filePath);
}
public void Stop()
{
m_waveBufferMutex.WaitOne();
if (m_audioGraph != null)
{
m_audioGraph.Stop();
m_audioGraph.Dispose();
m_audioGraph = null;
}
m_waveBufferMutex.ReleaseMutex();
}
public void Dispose()
{
_audioGraph?.Dispose();
_outputNode?.Dispose();
_inputNode?.Dispose();
_timer?.Dispose();
_timer = null;
_audioGraph = null;
_outputNode = null;
_inputNode = null;
}
async Task StopRecordingAsync()
{
if (audioGraph != null)
{
audioGraph.Stop();
await audioFileOutputNode.FinalizeAsync();
audioGraph.Dispose();
audioGraph = null;
Debug.WriteLine("Stopped recording.");
}
}
private async Task CreateAudioGraph()
{
var outputDevices = await DeviceInformation.FindAllAsync(MediaDevice.GetAudioRenderSelector());
var settings = new AudioGraphSettings(AudioRenderCategory.Media)
{
QuantumSizeSelectionMode = QuantumSizeSelectionMode.LowestLatency,
PrimaryRenderDevice = outputDevices[0]
};
var result = await AudioGraph.CreateAsync(settings);
if (result.Status != AudioGraphCreationStatus.Success)
{
await new MessageDialog("AudioGraph Creation Error: " + result.Status).ShowAsync();
return;
}
_audioGraph = result.Graph;
// Create a device output node
var deviceOutputNodeResult = await _audioGraph.CreateDeviceOutputNodeAsync();
if (deviceOutputNodeResult.Status != AudioDeviceNodeCreationStatus.Success)
{
await new MessageDialog("Audio Device Output unavailable: " + deviceOutputNodeResult.Status).ShowAsync();
return;
}
_deviceOutputNode = deviceOutputNodeResult.DeviceOutputNode;
// Create a device input node using the default audio input device
var deviceInputNodeResult = await _audioGraph.CreateDeviceInputNodeAsync(MediaCategory.Other);
if (deviceInputNodeResult.Status != AudioDeviceNodeCreationStatus.Success)
{
await new MessageDialog("Audio Device Input unavailable: " + deviceInputNodeResult.Status).ShowAsync();
_audioGraph.Dispose();
_audioGraph = null;
return;
}
_deviceInputNode = deviceInputNodeResult.DeviceInputNode;
// Because we are using lowest latency setting,
// in general, we need to handle device disconnection errors
// graph.UnrecoverableErrorOccurred += Graph_UnrecoverableErrorOccurred;
}
private async Task openMicrophonePopup()
{
AudioGraphSettings settings = new AudioGraphSettings(Windows.Media.Render.AudioRenderCategory.Media);
CreateAudioGraphResult result = await AudioGraph.CreateAsync(settings);
AudioGraph audioGraph = result.Graph;
CreateAudioDeviceInputNodeResult resultNode = await audioGraph.CreateDeviceInputNodeAsync(Windows.Media.Capture.MediaCategory.Media);
AudioDeviceInputNode deviceInputNode = resultNode.DeviceInputNode;
deviceInputNode.Dispose();
audioGraph.Dispose();
}
async private void ToggleRecord2(object sender, RoutedEventArgs e)
{
var btn_record_audio = sender as ToggleButton;
if (btn_record_audio.IsChecked == false)
{
_graph_record.Stop();
_graph_record.Dispose();
await PlayAudio(_target_file);
//using the media element to play the sound
//var raf_stream = await _target_file.OpenReadAsync();
//media.SetSource(raf_stream, "");
//media.Play();
}
else
{
//initialize the audio graph for recording and then start recording
AudioGraphSettings settings = new AudioGraphSettings(AudioRenderCategory.Media);
settings.QuantumSizeSelectionMode = QuantumSizeSelectionMode.LowestLatency;
CreateAudioGraphResult result = await AudioGraph.CreateAsync(settings);
if (result.Status == AudioGraphCreationStatus.Success)
{
_graph_record = result.Graph;
//setup the input
var input_node = (await _graph_record.CreateDeviceInputNodeAsync(Windows.Media.Capture.MediaCategory.Other)).DeviceInputNode;
//setup the output (place where audio will be recorded to)
var feedback_folder = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFolderAsync("AudioFeedback", CreationCollisionOption.OpenIfExists);
_target_file = await feedback_folder.CreateFileAsync("audio message.mp3", CreationCollisionOption.GenerateUniqueName);
var profile = MediaEncodingProfile.CreateMp3(AudioEncodingQuality.High);
var file_output_node = (await _graph_record.CreateFileOutputNodeAsync(_target_file, profile)).FileOutputNode;
//direct the input to the output
input_node.AddOutgoingConnection(file_output_node);
media.Stop(); //stop playback since we are recording
_graph_record.Start();
}
else
{
await new MessageDialog("Could not initialize recorder").ShowAsync();
}
}
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
private void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
// Release managed objects.
Stop();
AudioGraph.Dispose();
frameInputNode.Dispose();
}
disposedValue = true;
}
}
private void SaveAndCleanGraph()
{
new TaskFactory().StartNew(async() =>
{
var creationTask = _storageFolder.CreateFileAsync(Guid.NewGuid() + ".wav",
Windows.Storage.CreationCollisionOption.ReplaceExisting);
var file = await creationTask;
CopyFile(_mainFile, file);
await _fileOutputNode.FinalizeAsync();
_audioGraph.Stop();
_audioGraph.Dispose();
await InitGraph();
});
}
public static void StopMicDevice()
{
StringBuilder sb = new StringBuilder(260); // 260 is Windows MAX_PATH as defined in c++. paths cant be longer than this and the plugin knows it, too
Task.Factory.StartNew(() =>
{
MicStopRecording(sb);
Debug.WriteLine(sb.ToString());
CheckForErrorOnCall(MicDestroy());
graph.Dispose(); // unfortunately, the app needs to do this to be able to re-init plugin later
graph = null; // this, too
}
);
}
/// <summary>
/// Overridable Dispose
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
/// <param name="disposing">Disposing flag</param>
protected virtual void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
// dispose managed state (managed objects)
// cleanup existing items
_fileInputNode?.Dispose( );
_deviceOutputNode?.Dispose( );
_audioGraph?.Dispose( );
}
disposedValue = true;
}
}
private async void Graph_UnrecoverableErrorOccurred(AudioGraph sender, AudioGraphUnrecoverableErrorOccurredEventArgs args)
{
// Recreate the graph and all nodes when this happens
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async () =>
{
sender.Dispose();
// Re-query for devices
await PopulateDeviceList();
// Reset UI
fileButton.IsEnabled = false;
recordStopButton.IsEnabled = false;
recordStopButton.Content = "Record";
outputDeviceContainer.Background = new SolidColorBrush(Color.FromArgb(255, 74, 74, 74));
audioPipe1.Fill = new SolidColorBrush(Color.FromArgb(255, 49, 49, 49));
audioPipe2.Fill = new SolidColorBrush(Color.FromArgb(255, 49, 49, 49));
});
}
private async void Graph_UnrecoverableErrorOccurred(AudioGraph sender, AudioGraphUnrecoverableErrorOccurredEventArgs args)
{
// Recreate the graph and all nodes when this happens
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
sender.Dispose();
});
}