private AVCaptureDeviceFormat SelectFormatForDevice(AVCaptureDevice device, int targetWidth, int targetHeight)
{
var formats = RTCCameraVideoCapturer.SupportedFormatsForDevice(device);
AVCaptureDeviceFormat selectedFormat = null;
var currentDiff = int.MaxValue;
foreach (var format in formats)
{
if (!(format.FormatDescription is CMVideoFormatDescription videoFormatDescription))
{
continue;
}
var dimension = videoFormatDescription.Dimensions;
var pixelFormat = videoFormatDescription.MediaSubType;
var diff = Math.Abs(targetWidth - dimension.Width) + Math.Abs(targetHeight - dimension.Height);
if (diff < currentDiff)
{
selectedFormat = format;
currentDiff = diff;
}
else if (diff == currentDiff && pixelFormat == _capturer.PreferredOutputPixelFormat)
{
selectedFormat = format;
}
}
return(selectedFormat);
}
public void DidCreateLocalCapturer(RTCCameraVideoCapturer localCapturer)
{
_videoCallView.LocalVideoView.CaptureSession = localCapturer.CaptureSession;
_captureController = new ARDCaptureController(localCapturer, new ARDSettingsModel());
_captureController.StartCapture();
}
public void StartCapture(int videoWidth, int videoHeight, int fps)
{
_fps = fps;
_videoWidth = videoWidth;
_videoHeight = videoHeight;
var position = _usingFrontCamera ? AVCaptureDevicePosition.Back : AVCaptureDevicePosition.Front;
var device = FindDeviceForPosition(position);
var format = SelectFormatForDevice(device, videoWidth, videoHeight);
if (format == null)
{
Debug.WriteLine($"CameraVideoCapturerNative -> didn't find a valid format for {device}");
format = RTCCameraVideoCapturer.SupportedFormatsForDevice(device).FirstOrDefault();
}
if (format == null)
{
Console.WriteLine("CameraVideoCapturerNative -> no valid formats for device {0}", device);
return;
}
fps = SelectFpsForFormat(format);
_capturer.StartCaptureWithDevice(device, format, fps);
}
public ICameraVideoCapturer CreateCameraCapturer(IVideoSource videoSource, bool frontCamera)
{
var capturer = new RTCCameraVideoCapturer();
capturer.WeakDelegate = videoSource.ToPlatformNative <RTCVideoSource>();
return(new PlatformCameraVideoCapturer(capturer, frontCamera));
}
public void StartCapture(int videoWidth, int videoHeight, int fps)
{
_videoFps = fps;
_videoHeight = videoHeight;
_videoWidth = videoWidth;
var position = _usingFrontCamera ? AVCaptureDevicePosition.Back : AVCaptureDevicePosition.Front;
var device = GetDeviceByPosition(position);
var format = GetFormatForDevice(device, videoWidth, videoHeight);
if (format == null)
{
Debug.WriteLine($"PLATFORMCAMERAVIDEOCAPTURER: not valid format for {device}");
format = RTCCameraVideoCapturer.SupportedFormatsForDevice(device).FirstOrDefault();
if (format == null)
{
Debug.WriteLine($"PLATFORMCAMERAVIDEOCAPTURER: no valid formats for device {0} and {device}");
return;
}
fps = GetFpsByFormat(format);
_cameraVideoCapturer.StartCaptureWithDevice(device, format, fps);
}
}
public CameraVideoCapturerNative(RTCCameraVideoCapturer capturer, bool frontCamera) : base(capturer)
{
_capturer = capturer;
_usingFrontCamera = frontCamera;
}
public ICameraVideoCapturer CreateCameraCapturer(IVideoSource videoSource, bool frontCamera)
{
var capturer = new RTCCameraVideoCapturer(videoSource.ToNative <RTCVideoSource>());
return(new CameraVideoCapturerNative(capturer, frontCamera));
}
public PlatformCameraVideoCapturer(RTCCameraVideoCapturer cameraVideoCapturer, bool usingFrontCamera = true) : base(cameraVideoCapturer)
{
_cameraVideoCapturer = cameraVideoCapturer;
_usingFrontCamera = usingFrontCamera;
}
public CameraVideoCapturerNative(RTCCameraVideoCapturer capturer, RTCCameraDevice cameraDevice) : base(capturer)
{
_capturer = capturer;
_deviceName = cameraDevice.DeviceId;
}
public void DidCreateLocalCapturer(RTCCameraVideoCapturer localCapturer)
{
}
public ARDCaptureController(RTCCameraVideoCapturer capturer, ARDSettingsModel settings)
{
_capturer = capturer;
_settings = settings;
_usingFrontCamera = true;
}
public ICameraVideoCapturer CreateCameraCapturer(IVideoSource videoSource, RTCCameraDevice cameraDevice)
{
var capturer = new RTCCameraVideoCapturer(videoSource.ToNative <RTCVideoSource>());
return(new CameraVideoCapturerNative(capturer, cameraDevice));
}
