private async Task UpdatePreviewOrientationAsync()
{
var rotation = _rotationHelper.GetCameraPreviewOrientation();
var props = MediaCapture.VideoDeviceController.GetMediaStreamProperties(MediaStreamType.VideoPreview);
props.Properties.Add(RotationKey, CameraRotationHelper.ConvertSimpleOrientationToClockwiseDegrees(rotation));
await MediaCapture.SetEncodingPropertiesAsync(MediaStreamType.VideoPreview, props, null).AsTask().ConfigureAwait(false);
}
private async Task RecordAsync(CameraForView cameraForView, JObject options, IPromise promise, CancellationToken token)
{
var mediaCapture = cameraForView.MediaCapture;
var taskCompletionSource = new TaskCompletionSource <bool>();
using (var cancellationTokenSource = new CancellationTokenSource())
using (token.Register(cancellationTokenSource.Cancel))
using (cancellationTokenSource.Token.Register(async() => await StopRecordingAsync(mediaCapture, taskCompletionSource)))
{
var quality = (VideoEncodingQuality)options.Value <int>("quality");
var encodingProfile = MediaEncodingProfile.CreateMp4(quality);
mediaCapture.AudioDeviceController.Muted = options.Value <bool>("audio");
var orientation = await cameraForView.GetCameraCaptureOrientationAsync().ConfigureAwait(false);
encodingProfile.Video.Properties.Add(RotationKey, CameraRotationHelper.ConvertSimpleOrientationToClockwiseDegrees(orientation));
var stream = default(InMemoryRandomAccessStream);
try
{
var target = options.Value <int>("target");
var outputFile = default(StorageFile);
if (target == CameraCaptureTargetMemory)
{
stream = new InMemoryRandomAccessStream();
await mediaCapture.StartRecordToStreamAsync(encodingProfile, stream).AsTask().ConfigureAwait(false);
}
else
{
outputFile = await GetOutputStorageFileAsync(MediaTypeVideo, target).AsTask().ConfigureAwait(false);
await mediaCapture.StartRecordToStorageFileAsync(encodingProfile, outputFile).AsTask().ConfigureAwait(false);
}
if (options.ContainsKey("totalSeconds"))
{
var totalSeconds = options.Value <double>("totalSeconds");
if (totalSeconds > 0)
{
cancellationTokenSource.CancelAfter(TimeSpan.FromSeconds(totalSeconds));
}
}
await taskCompletionSource.Task.ConfigureAwait(false);
if (target == CameraCaptureTargetMemory)
{
var data = await GetBase64DataAsync(stream).ConfigureAwait(false);
promise.Resolve(new JObject
{
{ "data", data },
});
}
else
{
await UpdateVideoPropertiesAsync(outputFile, options).ConfigureAwait(false);
promise.Resolve(new JObject
{
{ "path", outputFile.Path },
});
}
}
finally
{
stream?.Dispose();
}
}
_recordingCancellation.Dispose();
_recordingTask = null;
}