/// <summary>
/// Disables and removes the video stabilization effect, and unregisters the event handler for the EnabledChanged event of the effect
/// </summary>
/// <returns></returns>
private async Task CleanUpVideoStabilizationEffectAsync()
{
// No work to be done if there is no effect
if (_videoStabilizationEffect == null)
{
return;
}
// Disable the effect
_videoStabilizationEffect.Enabled = false;
_videoStabilizationEffect.EnabledChanged -= VideoStabilizationEffect_EnabledChanged;
// Remove the effect (see ClearEffectsAsync method to remove all effects from a stream)
await _mediaCapture.RemoveEffectAsync(_videoStabilizationEffect);
Debug.WriteLine("VS effect removed from pipeline");
// If backed up settings (stream properties and encoding profile) exist, restore them and clear the backups
if (_inputPropertiesBackup != null)
{
await _mediaCapture.VideoDeviceController.SetMediaStreamPropertiesAsync(MediaStreamType.VideoRecord, _inputPropertiesBackup);
_inputPropertiesBackup = null;
}
if (_outputPropertiesBackup != null)
{
_encodingProfile.Video = _outputPropertiesBackup;
_outputPropertiesBackup = null;
}
// Clear the member variable that held the effect instance
_videoStabilizationEffect = null;
}
private async Task CleanupCameraAsync()
{
if (mediaCapture != null)
{
if (isPreviewing)
{
await mediaCapture.StopPreviewAsync();
if (videoEffect != null)
{
await mediaCapture.RemoveEffectAsync(videoEffect);
}
}
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
PreviewControl.Source = null;
if (displayRequest != null)
{
displayRequest.RequestRelease();
}
mediaCapture.Dispose();
mediaCapture = null;
});
}
}
/// <summary>
/// Disables and removes the scene analysis effect, and unregisters the event handler for the SceneAnalyzed event of the effect
/// </summary>
/// <returns></returns>
private async Task CleanSceneAnalysisEffectAsync()
{
// Disable detection and unsubscribe from the events
_sceneAnalysisEffect.HighDynamicRangeAnalyzer.Enabled = false;
_sceneAnalysisEffect.SceneAnalyzed -= SceneAnalysisEffect_SceneAnalyzed;
// Remove the effect from the pipeline (see ClearEffectsAsync method to remove all effects from a given stream)
await _mediaCapture.RemoveEffectAsync(_sceneAnalysisEffect);
Debug.WriteLine("SA effect removed from pipeline");
// Clear the member variable that held the effect instance
_sceneAnalysisEffect = null;
}
/// <summary>
/// Disables and removes the face detection effect, and unregisters the event handler for face detection
/// </summary>
/// <returns></returns>
private async Task CleanUpFaceDetectionEffectAsync()
{
// Disable detection
_faceDetectionEffect.Enabled = false;
// Unregister the event handler
_faceDetectionEffect.FaceDetected -= FaceDetectionEffect_FaceDetected;
// Remove the effect (see ClearEffectsAsync method to remove all effects from a stream)
await _mediaCapture.RemoveEffectAsync(_faceDetectionEffect);
// Clear the member variable that held the effect instance
_faceDetectionEffect = null;
}
private async Task CleanUp()
{
if (_faceDetectionEffect != null)
{
_faceDetectionEffect.FaceDetected -= FaceDetectionEffect_FaceDetected;
_faceDetectionEffect.Enabled = false;
await _mediaCapture?.RemoveEffectAsync(_faceDetectionEffect);
_faceDetectionEffect = null;
}
if (_orientationSensor != null)
{
_orientationSensor.OrientationChanged -= OrientationSensor_OrientationChanged;
}
if (_displayInformation != null)
{
_displayInformation.OrientationChanged -= DisplayInformation_OrientationChanged;
}
if (ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons"))
{
HardwareButtons.CameraPressed -= HardwareButtons_CameraPressed;
}
if (_mediaCapture != null)
{
if (_mediaCapture.CameraStreamState == Windows.Media.Devices.CameraStreamState.Streaming)
{
await _mediaCapture.StopPreviewAsync();
}
_mediaCapture.Dispose();
_mediaCapture = null;
}
_initialized = false;
}
