/// <summary>
/// Captures the photo to storage file asynchronously.
/// </summary>
/// <param name="folder">The folder.</param>
/// <param name="fileName">Name of the file.</param>
/// <param name="defaultExtension">The default extension.</param>
/// <returns></returns>
public async Task <StorageFile> CapturePhotoToStorageFileAsync(StorageFolder folder = null, string fileName = null, string defaultExtension = ".jpg")
{
if (_countdownControl != null &&
this.PhotoCaptureCountdownSeconds > 0)
{
#pragma warning disable 4014
_countdownControl.FadeInCustom();
await _countdownControl.StartCountdownAsync(this.PhotoCaptureCountdownSeconds);
_countdownControl.FadeOutCustom();
#pragma warning restore 4014
}
if (_flashAnimation != null)
{
_flashAnimation.Begin();
}
if (folder == null)
{
folder = KnownFolders.PicturesLibrary;
}
if (fileName == null)
{
fileName = await folder.CreateTempFileNameAsync(defaultExtension);
}
var photoFile = await folder.CreateFileAsync(
fileName,
CreationCollisionOption.FailIfExists);
ImageEncodingProperties imageEncodingProperties;
switch (Path.GetExtension(fileName))
{
case ".png":
imageEncodingProperties = ImageEncodingProperties.CreatePng();
break;
default:
imageEncodingProperties = ImageEncodingProperties.CreateJpeg();
break;
}
try
{
await MediaCapture.CapturePhotoToStorageFileAsync(imageEncodingProperties, photoFile);
}
catch
{
OnCameraFailed(null, null);
return(null);
}
return(photoFile);
}
/// <summary>
/// Creates a temporary file.
/// </summary>
/// <param name="folder"></param>
/// <param name="extension"></param>
/// <returns></returns>
public static async Task <StorageFile> CreateTempFileAsync(this StorageFolder folder, string extension = ".tmp")
{
if (folder == null)
{
folder = ApplicationData.Current.TemporaryFolder;
}
var fileName = await folder.CreateTempFileNameAsync(
extension,
DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss.ffffff"));
var file = await folder.CreateFileAsync(
fileName,
CreationCollisionOption.GenerateUniqueName);
return(file);
}
public async Task <StorageFile> StartVideoCaptureAsync(StorageFolder folder = null, string fileName = null)
{
if (_internalState == CameraCaptureControlStates.Recording)
{
// Note: Already recording - ignoring the folder and filename and returning result of previous request.
await _recordingTaskSource.Task;
return(_videoFile);
}
_internalState = CameraCaptureControlStates.Recording;
_recordingTaskSource = new TaskCompletionSource <bool>(false);
if (_internalState != CameraCaptureControlStates.Shown)
{
await ShowAsync();
}
if (_mediaCapture == null)
{
throw new InvalidOperationException();
}
if (folder == null)
{
folder = KnownFolders.VideosLibrary;
}
if (fileName == null)
{
fileName = await folder.CreateTempFileNameAsync(".mp4");
}
_videoFile = await folder.CreateFileAsync(
fileName,
CreationCollisionOption.FailIfExists);
if (_recordingIndicator != null)
{
_recordingIndicator.Visibility = Visibility.Visible;
}
if (_recordingAnimation != null)
{
_recordingAnimation.Begin();
}
var encodingProfile =
Path.GetExtension(fileName).Equals(".wmv", StringComparison.OrdinalIgnoreCase) ?
MediaEncodingProfile.CreateWmv(VideoEncodingQuality) :
MediaEncodingProfile.CreateMp4(VideoEncodingQuality);
await _mediaCapture.StartRecordToStorageFileAsync(encodingProfile, _videoFile);
await _recordingTaskSource.Task;
_recordingTaskSource = null;
if (_recordingAnimation != null)
{
_recordingAnimation.Stop();
}
if (_recordingIndicator != null)
{
_recordingIndicator.Visibility = Visibility.Collapsed;
}
_internalState = CameraCaptureControlStates.Shown;
return(_videoFile);
}
