private async Task InitAudioMeterAsync()
{
var result = await AudioGraph.CreateAsync(new AudioGraphSettings(Windows.Media.Render.AudioRenderCategory.Speech));
if (result.Status == AudioGraphCreationStatus.Success)
{
this.audioGraph = result.Graph;
var audioDevice = (AudioDeviceComboBox.SelectedItem as ComboBoxItem);
if (audioDevice == null)
{
return;
}
var microphone = await DeviceInformation.CreateFromIdAsync(audioDevice.Tag.ToString());
var inProfile = MediaEncodingProfile.CreateWav(AudioEncodingQuality.High);
var inputResult = await this.audioGraph.CreateDeviceInputNodeAsync(MediaCategory.Speech, inProfile.Audio, microphone);
if (inputResult.Status != AudioDeviceNodeCreationStatus.Success)
{
var msg = new MessageDialog("Device is not available");
await msg.ShowAsync();
return;
}
this.audioGraph.Start();
var source = PlaybackSource.CreateFromAudioNode(inputResult.DeviceInputNode);
AudioDiscreteVUBar.Source = source.Source;
}
}
public void TestInit()
{
_audioNode = new FakeAudioNode();
_audioNode.EffectAdded += new TypedEventHandler <FakeAudioNode, IAudioEffectDefinition>(
(node, effectDefinition) =>
{
sut = (VisualizerAudioEffect)node.CreateAudioEffect(effectDefinition);
}
);
PlaybackSource.CreateFromAudioNode(_audioNode);
}
public void PlaybackSource_IsAudioEffectDefinitionPropertiesNotNull()
{
Windows.Foundation.Collections.IPropertySet props = null;
_audioNode.EffectAdded += new TypedEventHandler <FakeAudioNode, IAudioEffectDefinition>(
(node, effectDefinition) =>
{
props = effectDefinition.Properties;
}
);
PlaybackSource.CreateFromAudioNode(_audioNode);
Assert.IsNotNull(props);
}
public void PlaybackSource_IsAudioEffectDefinitionClassIdCorrect()
{
string effectName = "";
_audioNode.EffectAdded += new TypedEventHandler <FakeAudioNode, IAudioEffectDefinition>(
(node, effectDefinition) =>
{
effectName = effectDefinition.ActivatableClassId;
}
);
PlaybackSource.CreateFromAudioNode(_audioNode);
Assert.AreEqual(typeof(VisualizerAudioEffect).FullName, effectName);
}
// TODO: This test does not work from VM due to missing audio adapter
//[TestMethod]
//[TestCategory("PlaybackSource")]
private async Task PlaybackSource_CreateFromAudioNode() // TODO make this test work for VM
{
var graphResult = await AudioGraph.CreateAsync(new AudioGraphSettings(Windows.Media.Render.AudioRenderCategory.Media));
if (graphResult.Status == AudioGraphCreationStatus.Success)
{
var node = graphResult.Graph.CreateFrameInputNode();
var source = PlaybackSource.CreateFromAudioNode(node);
graphResult.Graph.Start();
Assert.IsNotNull(source.Source);
}
else
{
Assert.Inconclusive($"Not able conduct test, could not activate audio graph, result = {graphResult.Status}, {graphResult.ExtendedError.Message}");
}
}
