private async Task CreateAudioGraph()
{
// Create an AudioGraph with default settings
AudioGraphSettings settings = new AudioGraphSettings(AudioRenderCategory.Media);
CreateAudioGraphResult result = await AudioGraph.CreateAsync(settings);
if (result.Status != AudioGraphCreationStatus.Success)
{
// Cannot create graph
throw new Exception("error");
}
_graph = result.Graph;
// Create a device output node
CreateAudioDeviceOutputNodeResult deviceOutputResult = await _graph.CreateDeviceOutputNodeAsync();
_subMixNode = _graph.CreateSubmixNode();
if (deviceOutputResult.Status != AudioDeviceNodeCreationStatus.Success)
{
// Cannot create device output
throw new Exception("error");
}
_deviceOutputNode = deviceOutputResult.DeviceOutputNode;
_subMixNode.AddOutgoingConnection(_deviceOutputNode);
}
//<SnippetCreateSubmixNode>
private void CreateSubmixNode()
{
AudioSubmixNode submixNode = audioGraph.CreateSubmixNode();
fileInputNode.AddOutgoingConnection(submixNode);
frameInputNode.AddOutgoingConnection(submixNode);
submixNode.AddOutgoingConnection(fileOutputNode);
}
private void ConfigureSubmix()
{
//Create the submix node for the reverb
_submixNode = _graph.CreateSubmixNode();
_submixNode.OutgoingGain = 0.125d;
//Add the submix node to the DeviceOutput.
_submixNode.AddOutgoingConnection(_deviceOutput);
//Add Reverb to the Submix
ReverbEffectDefinition reverb = ReverbEffectDefinitionFactory.GetReverbEffectDefinition(_graph, ReverbEffectDefinitions.SmallRoom);
_submixNode.EffectDefinitions.Add(reverb);
}
private async Task CreateAudioGraph()
{
// Create an AudioGraph with default setting
AudioGraphSettings settings = new AudioGraphSettings(AudioRenderCategory.Media);
CreateAudioGraphResult result = await AudioGraph.CreateAsync(settings);
if (result.Status != AudioGraphCreationStatus.Success)
{
// Can't create the graph
rootPage.NotifyUser(String.Format("AudioGraph Creation Error because {0}", result.Status.ToString()), NotifyType.ErrorMessage);
return;
}
graph = result.Graph;
// Create a device output node
CreateAudioDeviceOutputNodeResult deviceOutputNodeResult = await graph.CreateDeviceOutputNodeAsync();
if (deviceOutputNodeResult.Status != AudioDeviceNodeCreationStatus.Success)
{
// Cannot create device output node
rootPage.NotifyUser(String.Format("Audio Device Output unavailable because {0}", deviceOutputNodeResult.Status.ToString()), NotifyType.ErrorMessage);
speakerContainer.Background = new SolidColorBrush(Colors.Red);
return;
}
deviceOutputNode = deviceOutputNodeResult.DeviceOutputNode;
rootPage.NotifyUser("Device Output Node successfully created", NotifyType.StatusMessage);
speakerContainer.Background = new SolidColorBrush(Colors.Green);
submixNode = graph.CreateSubmixNode();
submixNodeContainer.Background = new SolidColorBrush(Colors.Green);
submixNode.AddOutgoingConnection(deviceOutputNode);
echoEffect = new EchoEffectDefinition(graph);
echoEffect.WetDryMix = 0.7f;
echoEffect.Feedback = 0.5f;
echoEffect.Delay = 500.0f;
submixNode.EffectDefinitions.Add(echoEffect);
// Disable the effect in the beginning. Enable in response to user action (UI toggle switch)
submixNode.DisableEffectsByDefinition(echoEffect);
// All nodes can have an OutgoingGain property
// Setting the gain on the Submix node attenuates the output of the node
submixNode.OutgoingGain = 0.5;
// Graph successfully created. Enable buttons to load files
fileButton1.IsEnabled = true;
fileButton2.IsEnabled = true;
}
public async Task InitializeAsync()
{
DebugUtil.CheckAppThread();
AudioGraphSettings settings = new AudioGraphSettings(AudioRenderCategory.Media);
// settings.DesiredRenderDeviceAudioProcessing = AudioProcessing.Raw;
settings.QuantumSizeSelectionMode = QuantumSizeSelectionMode.LowestLatency;
CreateAudioGraphResult result = await AudioGraph.CreateAsync(settings);
DebugUtil.Assert(result.Status == AudioGraphCreationStatus.Success, "Failed to create audio graph");
_audioGraph = result.Graph;
int latencyInSamples = _audioGraph.LatencyInSamples;
// Create a device output node
CreateAudioDeviceOutputNodeResult deviceOutputNodeResult = _audioGraph.CreateDeviceOutputNodeAsync().GetResults();
DebugUtil.Assert(deviceOutputNodeResult.Status == AudioDeviceNodeCreationStatus.Success,
$"Audio Device Output unavailable because {deviceOutputNodeResult.Status}");
_deviceOutputNode = deviceOutputNodeResult.DeviceOutputNode;
_inputCaptureSubmixNode = _audioGraph.CreateSubmixNode(); // Create a device input node using the default audio input device
CreateAudioDeviceInputNodeResult deviceInputNodeResult = await _audioGraph.CreateDeviceInputNodeAsync(MediaCategory.Other);
DebugUtil.Assert(deviceInputNodeResult.Status == AudioDeviceNodeCreationStatus.Success,
$"Audio Device Input unavailable because {deviceInputNodeResult.Status}");
_deviceInputNode = deviceInputNodeResult.DeviceInputNode;
_deviceInputNode.AddOutgoingConnection(_inputCaptureSubmixNode);
/*
* echoEffect = new EchoEffectDefinition(_graph);
* echoEffect.WetDryMix = 0.7f;
* echoEffect.Feedback = 0.5f;
* echoEffect.Delay = 500.0f;
* submixNode.EffectDefinitions.Add(echoEffect);
*
* // Disable the effect in the beginning. Enable in response to user action (UI toggle switch)
* submixNode.DisableEffectsByDefinition(echoEffect);
*/
// All nodes can have an OutgoingGain property
// Setting the gain on the Submix node attenuates the output of the node
//_submixNode.OutgoingGain = 0.5;
}
private async void Play_OnClick(object sender, RoutedEventArgs e)
{
await CreateGraph();
await CreateDefaultDeviceOutputNode();
await CreateFileInputNode();
// Create submix node
_submixNode = _graph.CreateSubmixNode();
AddCustomEcho();
ConnectNodes();
_graph.Start();
}
//</SnippetCreateSubmixNode>
private void AddEffect()
{
AudioSubmixNode submixNode = audioGraph.CreateSubmixNode();
//<SnippetAddEffect>
EchoEffectDefinition echoEffect = new EchoEffectDefinition(audioGraph);
echoEffect.Delay = 1000.0;
echoEffect.Feedback = .2;
echoEffect.WetDryMix = .5;
submixNode.EffectDefinitions.Add(echoEffect);
//</SnippetAddEffect>
fileInputNode.EffectDefinitions.Add(echoEffect);
}
private void ApplyEffects(Effects e)
{
if (reverbNode == null)
{
reverbNode = audioGraph.CreateSubmixNode();
}
if (eqNode == null)
{
eqNode = audioGraph.CreateSubmixNode();
}
if (limiterNode == null)
{
limiterNode = audioGraph.CreateSubmixNode();
}
if (eqEffect == null)
{
InitEffects();
}
reverbNode.EffectDefinitions.Clear();
eqNode.EffectDefinitions.Clear();
limiterNode.EffectDefinitions.Clear();
if (e.HasFlag(Effects.Equalizer))
{
eqNode.EffectDefinitions.Add(eqEffect);
eqNode.EnableEffectsByDefinition(eqEffect);
}
if (e.HasFlag(Effects.Limiter))
{
limiterNode.EffectDefinitions.Add(limiterEffect);
limiterNode.EnableEffectsByDefinition(limiterEffect);
}
if (e.HasFlag(Effects.Reverb))
{
reverbNode.EffectDefinitions.Add(reverbEffect);
reverbNode.EnableEffectsByDefinition(reverbEffect);
}
}
//
//
//
public async Task InitializeAsync()
{
audGraphResult = await AudioGraph.CreateAsync(audGraphSettings);
//
audGraph = audGraphResult.Graph;
//
//
//
deviceOutputNodeResult = await audGraph.CreateDeviceOutputNodeAsync();
//
deviceOutputNode = deviceOutputNodeResult.DeviceOutputNode;
//
//
//
//deviceInputNodeResult = await audGraph.CreateDeviceInputNodeAsync(MediaCategory.Other);
// deviceInputNodeResult = await audGraph.CreateDeviceInputNodeAsync(MediaCategory.Other, audGraph.EncodingProperties);
deviceInputNodeResult = await audGraph.CreateDeviceInputNodeAsync(MediaCategory.Other, audGraph.EncodingProperties, inputDevice);
//
deviceInputNode = deviceInputNodeResult.DeviceInputNode;
//
//
//
audioDeviceOutputSubmixNode = audGraph.CreateSubmixNode();
//
//
//
deviceInputNode.AddOutgoingConnection(audioDeviceOutputSubmixNode);
//
audioDeviceOutputSubmixNode.AddOutgoingConnection(deviceOutputNode);
//
//
//
CreateEchoEffect();
CreateReverbEffect();
CreateLimiterEffect();
CreateEqEffect();
}
private async Task CreateAudioGraph()
{
// Create an AudioGraph with default setting
AudioGraphSettings settings = new AudioGraphSettings(AudioRenderCategory.Media);
CreateAudioGraphResult result = await AudioGraph.CreateAsync(settings);
if (result.Status != AudioGraphCreationStatus.Success)
{
// Can't create the graph
rootPage.NotifyUser(String.Format("AudioGraph Creation Error because {0}", result.Status.ToString()), NotifyType.ErrorMessage);
return;
}
graph = result.Graph;
// Create a device output node
CreateAudioDeviceOutputNodeResult deviceOutputNodeResult = await graph.CreateDeviceOutputNodeAsync();
if (deviceOutputNodeResult.Status != AudioDeviceNodeCreationStatus.Success)
{
// Cannot create device output node
rootPage.NotifyUser(String.Format("Audio Device Output unavailable because {0}", deviceOutputNodeResult.Status.ToString()), NotifyType.ErrorMessage);
speakerContainer.Background = new SolidColorBrush(Colors.Red);
return;
}
deviceOutputNode = deviceOutputNodeResult.DeviceOutputNode;
rootPage.NotifyUser("Device Output Node successfully created", NotifyType.StatusMessage);
speakerContainer.Background = new SolidColorBrush(Colors.Green);
submixNode = graph.CreateSubmixNode();
subMixNode.Background = new SolidColorBrush(Colors.Green);
submixNode.AddOutgoingConnection(deviceOutputNode);
echoEffect = new EchoEffectDefinition(graph);
echoEffect.WetDryMix = 0.7f;
echoEffect.Feedback = 0.5f;
echoEffect.Delay = 500.0f;
submixNode.EffectDefinitions.Add(echoEffect);
// Disable the effect in the beginning. Enable in response to user action (UI toggle switch)
submixNode.DisableEffectsByDefinition(echoEffect);
// All nodes can have an OutgoingGain property
// Setting the gain on the Submix node attenuates the output of the node
submixNode.OutgoingGain = 0.5;
// Graph successfully created. Enable buttons to load files
fileButton1.IsEnabled = true;
fileButton2.IsEnabled = true;
}
