private async void ScenarioClose()
{
try
{
if (m_bPhotoSequence)
{
ShowStatusMessage("Stopping PhotoSequence");
await m_photoSequenceCapture.FinishAsync();
m_photoSequenceCapture = null;
m_bPhotoSequence = false;
m_framePtr = null;
}
if (m_bPreviewing)
{
await m_capture.StopPreviewAsync();
m_bPreviewing = false;
}
if (m_capture != null)
{
previewElement4.Source = null;
m_capture.Dispose();
}
}
catch (Exception exception)
{
ShowExceptionMessage(exception);
}
}
private async Task openCameraPopup()
{
MediaCapture mediaCapture = new Windows.Media.Capture.MediaCapture();
await mediaCapture.InitializeAsync();
mediaCapture.Dispose();
}
private async void ScenarioClose()
{
try
{
if (m_bRecording)
{
ShowStatusMessage("Stopping Record");
await m_mediaCaptureMgr.StopRecordAsync();
m_bRecording = false;
}
if (m_bPreviewing)
{
ShowStatusMessage("Stopping preview");
await m_mediaCaptureMgr.StopPreviewAsync();
m_bPreviewing = false;
}
if (m_mediaCaptureMgr != null)
{
ShowStatusMessage("Stopping Camera");
previewElement1.Source = null;
m_mediaCaptureMgr.Dispose();
}
}
catch (Exception e)
{
ShowExceptionMessage(e);
}
}
private async void ScenarioClose()
{
if (m_bRecording)
{
ShowStatusMessage("Stopping Record on invisibility");
await m_mediaCaptureMgr.StopRecordAsync();
m_bRecording = false;
EnableButton(true, "StartStopRecord");
m_mediaCaptureMgr.Dispose();
}
if (m_mediaCaptureMgr != null)
{
m_mediaCaptureMgr.Dispose();
}
}
async public void initPhotoControl()
{
setMediaCaptureInitializationSettings();
// reset all properties if photoManager contains an object.
if (_captureManager != null)
{
_captureManager.Dispose();
_captureManager = null;
}
_captureManager = new MediaCapture();
await _captureManager.InitializeAsync(getMediaCaptureInitializationSettings());
cptElementShowPreview.Source = _captureManager;
await _captureManager.StartPreviewAsync();
DisplayInformation displayInfo = DisplayInformation.GetForCurrentView();
displayInfo.OrientationChanged += DisplayInfo_OrientationChanged;
DisplayInfo_OrientationChanged(displayInfo, null);
}
public async Task<RecordingToken> StartAsync()
{
var capture = new MediaCapture();
var initSettings = new MediaCaptureInitializationSettings();
initSettings.StreamingCaptureMode = StreamingCaptureMode.Audio;
await capture.InitializeAsync(initSettings);
var fileName = DateTimeOffset.Now.TimeOfDay.ToString().Replace(':', '_') + ".wav";
var file = await ApplicationData.Current.LocalFolder.CreateFileAsync(fileName);
var profile = MediaEncodingProfile.CreateWav(AudioEncodingQuality.Medium);
await capture.StartRecordToStorageFileAsync(profile, file);
return new RecordingToken(file.Path, async () =>
{
await capture.StopRecordAsync();
// It's important to dispose the capture device here to avoid application crash when using FileSavePicker afterwards
capture.Dispose();
});
}
// </SnippetMediaCaptureVideo_StopRecordCS>
// </SnippetMediaCaptureVideo_CompleteCS>
public async Task CleanupCaptureResources()
{
if (_recording && _mediaCapture != null)
{
await _mediaCapture.StopRecordAsync();
_recording = false;
}
if (_previewing && _mediaCapture != null)
{
await _mediaCapture.StopPreviewAsync();
_previewing = false;
}
if (_mediaCapture != null)
{
if (previewElement != null)
{
previewElement.Source = null;
}
_mediaCapture.Dispose();
}
}
private async Task<bool> IsMicrophoneAvailable()
{
// Error messages from: https://msdn.microsoft.com/en-us/library/windows/apps/hh768223.aspx#additional_usage_guidance
try
{
// We do this initialization (and tear down immediately after) just to check if we have access to a microphone.
// We'll do the actual work with NAudio, since MediaCapture doesn't supply raw PCM data that we need.
var mediaCapture = new MediaCapture();
await mediaCapture.InitializeAsync();
mediaCapture.Dispose();
return true;
}
catch (UnauthorizedAccessException)
{
RaiseMicrophoneIsNotAvailable(
"Your microphone is currently turned off. To change your microphone setting, open the settings charm and tap permissions. " +
"Then tap the mute button to start using microphone again.");
return false;
}
catch (Exception)
{
RaiseMicrophoneIsNotAvailable(
"You do not have the required microphone present on your system.");
return false;
}
}
// Must be called on the UI thread
private async Task DisposeCaptureAsync()
{
Preview.Source = null;
if (autoFocus != null)
{
autoFocus.Dispose();
autoFocus = null;
}
MediaCapture mediaCapture;
lock (this)
{
mediaCapture = this.mediaCapture;
this.mediaCapture = null;
}
if (mediaCapture != null)
{
mediaCapture.Failed -= OnMediaCaptureFailed;
await mediaCapture.StopPreviewAsync();
mediaCapture.Dispose();
}
}
public async void Capture_Click(object sender, RoutedEventArgs e)
{
MediaCapture mediaCapture = new MediaCapture();
await mediaCapture.InitializeAsync();
if (mediaCapture.VideoDeviceController.LowLagPhotoSequence.Supported)
{
mediaCapture.Dispose();
Frame.Navigate(typeof(SequenceCapturePage));
}
else
{
mediaCapture.Dispose();
Frame.Navigate(typeof(VideoPreviewCapturePage));
}
}
