void ToggleLivePhotoMode()
{
sessionQueue.DispatchAsync(() => {
livePhotoMode = (livePhotoMode == LivePhotoMode.On) ? LivePhotoMode.Off : LivePhotoMode.On;
var mode = livePhotoMode;
DispatchQueue.MainQueue.DispatchAsync(() => {
var title = (mode == LivePhotoMode.On) ? "Live Photo Mode: On" : "Live Photo Mode: Off";
LivePhotoModeButton.SetTitle(title, UIControlState.Normal);
});
});
}
public void CapturePhoto(LivePhotoMode livePhotoMode, bool saveToPhotoLibrary)
{
_sessionQueue.DispatchAsync(() =>
{
var photoSettings = AVCapturePhotoSettings.Create();
if (_photoOutput.SupportedFlashModes.Contains(NSNumber.FromInt32((int)AVCaptureFlashMode.Auto)))
{
photoSettings.FlashMode = AVCaptureFlashMode.Auto;
}
photoSettings.IsHighResolutionPhotoEnabled = true;
var availablePhotoCodecTypes = photoSettings.AvailableEmbeddedThumbnailPhotoCodecTypes;
if (UIDevice.CurrentDevice.CheckSystemVersion(10, 0) && availablePhotoCodecTypes.Length > 0)
{
photoSettings.EmbeddedThumbnailPhotoFormat = new NSMutableDictionary
{
{ AVVideo.CodecKey, availablePhotoCodecTypes[0].GetConstant() }
};
}
if (livePhotoMode == LivePhotoMode.On)
{
if (_presetConfiguration == SessionPresetConfiguration.LivePhotos &&
_photoOutput.IsLivePhotoCaptureSupported)
{
photoSettings.LivePhotoMovieFileUrl =
NSUrl.CreateFileUrl(new[] { Path.GetTempPath(), $"{Guid.NewGuid()}.mov" });
}
else
{
Console.WriteLine(
"capture session: warning - trying to capture live photo but it's not supported by current configuration, capturing regular photo instead");
}
}
// Use a separate object for the photo capture delegate to isolate each capture life cycle.
var photoCaptureDelegate = new PhotoCaptureDelegate(photoSettings,
() => WillCapturePhotoAnimationAction(photoSettings),
CapturingLivePhotoAction, CapturingCompletedAction)
{
ShouldSavePhotoToLibrary = saveToPhotoLibrary
};
_photoOutput.CapturePhoto(photoSettings, photoCaptureDelegate);
});
}
void ToggleLivePhotoMode (UIButton livePhotoModeButton)
{
sessionQueue.DispatchAsync (() => {
livePhotoMode = (livePhotoMode == LivePhotoMode.On) ? LivePhotoMode.Off : LivePhotoMode.On;
var mode = livePhotoMode;
DispatchQueue.MainQueue.DispatchAsync (() => {
var title = (mode == LivePhotoMode.On) ? "Live Photo Mode: On" : "Live Photo Mode: Off";
LivePhotoModeButton.SetTitle (title, UIControlState.Normal);
});
});
}
void ConfigureSession()
{
if (setupResult != AVCamSetupResult.Success)
{
return;
}
session.BeginConfiguration();
// We do not create an AVCaptureMovieFileOutput when setting up the session because the
// AVCaptureMovieFileOutput does not support movie recording with AVCaptureSessionPresetPhoto.
session.SessionPreset = AVCaptureSession.PresetPhoto;
// Add video input.
// Choose the back dual camera if available, otherwise default to a wide angle camera.
var defaultVideoDevice = AVCaptureDevice.GetDefaultDevice(AVCaptureDeviceType.BuiltInDuoCamera, AVMediaType.Video, AVCaptureDevicePosition.Back)
?? AVCaptureDevice.GetDefaultDevice(AVCaptureDeviceType.BuiltInWideAngleCamera, AVMediaType.Video, AVCaptureDevicePosition.Back)
?? AVCaptureDevice.GetDefaultDevice(AVCaptureDeviceType.BuiltInWideAngleCamera, AVMediaType.Video, AVCaptureDevicePosition.Front);
NSError error;
var input = AVCaptureDeviceInput.FromDevice(defaultVideoDevice, out error);
if (error != null)
{
Console.WriteLine($"Could not create video device input: {error.LocalizedDescription}");
setupResult = AVCamSetupResult.SessionConfigurationFailed;
session.CommitConfiguration();
return;
}
if (session.CanAddInput(input))
{
session.AddInput(input);
videoDeviceInput = input;
DispatchQueue.MainQueue.DispatchAsync(() => {
// Why are we dispatching this to the main queue?
// Because AVCaptureVideoPreviewLayer is the backing layer for PreviewView and UIView
// can only be manipulated on the main thread.
// Note: As an exception to the above rule, it is not necessary to serialize video orientation changes
// on the AVCaptureVideoPreviewLayer’s connection with other session manipulation.
// Use the status bar orientation as the initial video orientation. Subsequent orientation changes are handled by
// ViewWillTransitionToSize method.
var statusBarOrientation = UIApplication.SharedApplication.StatusBarOrientation;
var initialVideoOrientation = AVCaptureVideoOrientation.Portrait;
AVCaptureVideoOrientation videoOrientation;
if (statusBarOrientation != UIInterfaceOrientation.Unknown && TryConvertToVideoOrientation(statusBarOrientation, out videoOrientation))
{
initialVideoOrientation = videoOrientation;
}
PreviewView.VideoPreviewLayer.Connection.VideoOrientation = initialVideoOrientation;
});
}
else
{
Console.WriteLine("Could not add video device input to the session");
setupResult = AVCamSetupResult.SessionConfigurationFailed;
session.CommitConfiguration();
return;
}
// Add audio input.
//var audioDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Audio);
var audioDevice = AVCaptureDevice.GetDefaultDevice(AVMediaType.Audio);
var audioDeviceInput = AVCaptureDeviceInput.FromDevice(audioDevice, out error);
if (error != null)
{
Console.WriteLine($"Could not create audio device input: {error.LocalizedDescription}");
}
if (session.CanAddInput(audioDeviceInput))
{
session.AddInput(audioDeviceInput);
}
else
{
Console.WriteLine("Could not add audio device input to the session");
}
// Add photo output.
if (session.CanAddOutput(photoOutput))
{
session.AddOutput(photoOutput);
photoOutput.IsHighResolutionCaptureEnabled = true;
photoOutput.IsLivePhotoCaptureEnabled = photoOutput.IsLivePhotoCaptureSupported;
livePhotoMode = photoOutput.IsLivePhotoCaptureSupported ? LivePhotoMode.On : LivePhotoMode.Off;
}
else
{
Console.WriteLine("Could not add photo output to the session");
setupResult = AVCamSetupResult.SessionConfigurationFailed;
session.CommitConfiguration();
return;
}
session.CommitConfiguration();
}
void ConfigureSession ()
{
if (setupResult != AVCamSetupResult.Success)
return;
session.BeginConfiguration ();
// We do not create an AVCaptureMovieFileOutput when setting up the session because the
// AVCaptureMovieFileOutput does not support movie recording with AVCaptureSessionPresetPhoto.
session.SessionPreset = AVCaptureSession.PresetPhoto;
// Add video input.
// Choose the back dual camera if available, otherwise default to a wide angle camera.
AVCaptureDevice defaultVideoDevice = AVCaptureDevice.GetDefaultDevice (AVCaptureDeviceType.BuiltInDuoCamera, AVMediaType.Video, AVCaptureDevicePosition.Back)
?? AVCaptureDevice.GetDefaultDevice (AVCaptureDeviceType.BuiltInWideAngleCamera, AVMediaType.Video, AVCaptureDevicePosition.Back)
?? AVCaptureDevice.GetDefaultDevice (AVCaptureDeviceType.BuiltInWideAngleCamera, AVMediaType.Video, AVCaptureDevicePosition.Front);
NSError error;
var input = AVCaptureDeviceInput.FromDevice (defaultVideoDevice, out error);
if (error != null) {
Console.WriteLine ($"Could not create video device input: {error.LocalizedDescription}");
setupResult = AVCamSetupResult.SessionConfigurationFailed;
session.CommitConfiguration ();
return;
}
if (session.CanAddInput (input)) {
session.AddInput (input);
videoDeviceInput = input;
DispatchQueue.MainQueue.DispatchAsync (() => {
// Why are we dispatching this to the main queue?
// Because AVCaptureVideoPreviewLayer is the backing layer for PreviewView and UIView
// can only be manipulated on the main thread.
// Note: As an exception to the above rule, it is not necessary to serialize video orientation changes
// on the AVCaptureVideoPreviewLayer’s connection with other session manipulation.
// Use the status bar orientation as the initial video orientation. Subsequent orientation changes are handled by
// ViewWillTransitionToSize method.
var statusBarOrientation = UIApplication.SharedApplication.StatusBarOrientation;
var initialVideoOrientation = AVCaptureVideoOrientation.Portrait;
AVCaptureVideoOrientation videoOrientation;
if (statusBarOrientation != UIInterfaceOrientation.Unknown && TryConvertToVideoOrientation(statusBarOrientation, out videoOrientation))
initialVideoOrientation = videoOrientation;
PreviewView.VideoPreviewLayer.Connection.VideoOrientation = initialVideoOrientation;
});
} else {
Console.WriteLine ("Could not add video device input to the session");
setupResult = AVCamSetupResult.SessionConfigurationFailed;
session.CommitConfiguration ();
return;
}
// Add audio input.
var audioDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Audio);
var audioDeviceInput = AVCaptureDeviceInput.FromDevice (audioDevice, out error);
if (error != null)
Console.WriteLine ($"Could not create audio device input: {error.LocalizedDescription}");
if (session.CanAddInput (audioDeviceInput))
session.AddInput (audioDeviceInput);
else
Console.WriteLine ("Could not add audio device input to the session");
// Add photo output.
if (session.CanAddOutput (photoOutput)) {
session.AddOutput (photoOutput);
photoOutput.IsHighResolutionCaptureEnabled = true;
photoOutput.IsLivePhotoCaptureEnabled = photoOutput.IsLivePhotoCaptureSupported;
livePhotoMode = photoOutput.IsLivePhotoCaptureSupported ? LivePhotoMode.On : LivePhotoMode.Off;
} else {
Console.WriteLine ("Could not add photo output to the session");
setupResult = AVCamSetupResult.SessionConfigurationFailed;
session.CommitConfiguration ();
return;
}
session.CommitConfiguration ();
}