private async static void CheckCamera()
{
DeviceInformation _cameraDevice;
var allVideoDevices = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);
DeviceInformation desiredDevice = allVideoDevices.FirstOrDefault(x => x.EnclosureLocation != null && x.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Front);
_cameraDevice = desiredDevice ?? allVideoDevices.FirstOrDefault();
var crh = new CameraRotationHelper(_cameraDevice.EnclosureLocation);
crh.OrientationChanged += OnOrientationChanged;
Debug.WriteLine($"{crh.GetCameraCaptureOrientation()}");
}
/// <summary>
/// Takes a photo to a StorageFile and adds rotation metadata to it
/// </summary>
/// <returns></returns>
private async Task TakePhotoAsync()
{
// While taking a photo, keep the video button enabled only if the camera supports simultaneously taking pictures and recording video
//VideoButton.IsEnabled = _mediaCapture.MediaCaptureSettings.ConcurrentRecordAndPhotoSupported;
// Make the button invisible if it's disabled, so it's obvious it cannot be interacted with
//VideoButton.Opacity = VideoButton.IsEnabled ? 1 : 0;
var stream = new InMemoryRandomAccessStream();
Debug.WriteLine("Taking photo...");
await _mediaCapture.CapturePhotoToStreamAsync(ImageEncodingProperties.CreateJpeg(), stream);
try
{
var file = await _captureFolder.CreateFileAsync("SimplePhoto.jpg", CreationCollisionOption.GenerateUniqueName);
Debug.WriteLine("Photo taken! Saving to " + file.Path);
var photoOrientation = CameraRotationHelper.ConvertSimpleOrientationToPhotoOrientation(_rotationHelper.GetCameraCaptureOrientation());
await ReencodeAndSavePhotoAsync(stream, file, photoOrientation);
Debug.WriteLine("Photo saved!");
}
catch (Exception ex)
{
// File I/O errors are reported as exceptions
Debug.WriteLine("Exception when taking a photo: " + ex.ToString());
}
// Done taking a photo, so re-enable the button
//VideoButton.IsEnabled = true;
//VideoButton.Opacity = 1;
}
/// <summary>
/// Records an MP4 video to a StorageFile and adds rotation metadata to it
/// </summary>
/// <returns></returns>
private async Task StartRecordingAsync()
{
try
{
// Create storage file for the capture
var videoFile = await localFolder.CreateFileAsync($"Video {DateTime.Now:D}.mp4", CreationCollisionOption.GenerateUniqueName);
var encodingProfile = MediaEncodingProfile.CreateMp4(VideoEncodingQuality.Auto);
// Calculate rotation angle, taking mirroring into account if necessary
var rotationAngle = CameraRotationHelper.ConvertSimpleOrientationToClockwiseDegrees(rotationHelper.GetCameraCaptureOrientation());
encodingProfile?.Video?.Properties.Add(RotationKey, PropertyValue.CreateInt32(rotationAngle));
Debug.WriteLine("Starting recording to " + videoFile.Path);
await mediaCapture.StartRecordToStorageFileAsync(encodingProfile, videoFile);
isRecording = true;
Debug.WriteLine("Started recording!");
}
catch (Exception ex)
{
// File I/O errors are reported as exceptions
Debug.WriteLine("Exception when starting video recording: " + ex.ToString());
}
}
public async Task StartAsync()
{
m_isRecording = true;
if (m_isVideo)
{
var profile = MediaEncodingProfile.CreateMp4(VideoEncodingQuality.Auto);
var rotationAngle = CameraRotationHelper.ConvertSimpleOrientationToClockwiseDegrees(_rotationHelper.GetCameraCaptureOrientation());
profile.Video.Properties.Add(new Guid("C380465D-2271-428C-9B83-ECEA3B4A85C1"), PropertyValue.CreateInt32(rotationAngle));
m_lowLag = await m_mediaCapture.PrepareLowLagRecordToStorageFileAsync(profile, m_file);
await m_lowLag.StartAsync();
}
else
{
var wavEncodingProfile = MediaEncodingProfile.CreateWav(AudioEncodingQuality.High);
wavEncodingProfile.Audio.BitsPerSample = 16;
wavEncodingProfile.Audio.SampleRate = 48000;
wavEncodingProfile.Audio.ChannelCount = 1;
m_opusSink = await OpusCodec.CreateMediaSinkAsync(m_file);
await m_mediaCapture.StartRecordToCustomSinkAsync(wavEncodingProfile, m_opusSink);
}
}
/// <summary>
/// Takes a photo to a StorageFile and adds rotation metadata to it
/// </summary>
/// <returns></returns>
private async Task TakePhotoAsync()
{
var stream = new InMemoryRandomAccessStream();
Debug.WriteLine("Taking photo...");
await _mediaCapture.CapturePhotoToStreamAsync(ImageEncodingProperties.CreateJpeg(), stream);
try
{
var file = await _captureFolder.CreateFileAsync("SimplePhoto.jpg", CreationCollisionOption.GenerateUniqueName);
Debug.WriteLine("Photo taken! Saving to " + file.Path);
var photoOrientation = CameraRotationHelper.ConvertSimpleOrientationToPhotoOrientation(_rotationHelper.GetCameraCaptureOrientation());
await ReencodeAndSavePhotoAsync(stream, file, photoOrientation);
PickImage.LoadImagesFromFileClicked(file);
Debug.WriteLine("Photo saved!");
}
catch (Exception ex)
{
// File I/O errors are reported as exceptions
Debug.WriteLine("Exception when taking a photo: " + ex.ToString());
}
}
public async void CapturePhoto_Click(object sender, RoutedEventArgs e)
{
//Getting access to Pictures folder
var myPictures = await StorageLibrary.GetLibraryAsync(KnownLibraryId.Pictures);
//Createing the file that will be saved
StorageFile file = await myPictures.SaveFolder.CreateFileAsync("night-photo.jpg", CreationCollisionOption.GenerateUniqueName);
//Capture a photo to the stream
using (var captureStream = new InMemoryRandomAccessStream())
{
//Common encoding with JPEG format
await _mediaCapture.CapturePhotoToStreamAsync(ImageEncodingProperties.CreateJpeg(), captureStream);
using (var fileStream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
//Decode the image from the memory stream
var decoder = await BitmapDecoder.CreateAsync(captureStream);
//Encode the image to file
var encoder = await BitmapEncoder.CreateForTranscodingAsync(fileStream, decoder);
//Getting the current orientation of the device
var photoOrientation = CameraRotationHelper.ConvertSimpleOrientationToPhotoOrientation(_rotationHelper.GetCameraCaptureOrientation());
//Including metadata about the photo in the image file
var properties = new BitmapPropertySet
{
{ "System.Photo.Orientation", new BitmapTypedValue(photoOrientation, PropertyType.UInt16) }
};
await encoder.BitmapProperties.SetPropertiesAsync(properties);
await encoder.FlushAsync();
}
}
}
