//public void RefreshCamera()
//{
// if (_holder == null) return;
// ApplyCameraSettings();
// try
// {
// Camera.SetPreviewDisplay(_holder);
// Camera.StartPreview();
// }
// catch (Exception ex)
// {
// Android.Util.Log.Debug(nameof(CameraController), ex.ToString());
// }
//}
public void SetupCamera(CameraFacing facing)
{
if (Camera != null)
{
return;
}
PermissionsHandler.CheckCameraPermissions(_context);
OpenCamera(facing);
if (Camera == null)
{
return;
}
ApplyCameraSettings();
try
{
Camera.SetPreviewDisplay(_holder);
//var previewParameters = Camera.GetParameters();
//var previewSize = previewParameters.PreviewSize;
//var bitsPerPixel = ImageFormat.GetBitsPerPixel(previewParameters.PreviewFormat);
//int bufferSize = (previewSize.Width * previewSize.Height * bitsPerPixel) / 8;
//const int NUM_PREVIEW_BUFFERS = 5;
//for (uint i = 0; i < NUM_PREVIEW_BUFFERS; ++i)
//{
// using (var buffer = new FastJavaByteArray(bufferSize))
// Camera.AddCallbackBuffer(buffer);
//}
Camera.StartPreview();
// Camera.SetNonMarshalingPreviewCallback(_cameraEventListener);
}
catch (Exception ex)
{
Android.Util.Log.Debug(nameof(CameraController), ex.ToString());
return;
}
// Docs suggest if Auto or Macro modes, we should invoke AutoFocus at least once
var currentFocusMode = Camera.GetParameters().FocusMode;
if (currentFocusMode == Camera.Parameters.FocusModeAuto ||
currentFocusMode == Camera.Parameters.FocusModeMacro)
{
AutoFocus();
}
}
protected async override void OnElementChanged(ElementChangedEventArgs <CameraPreviewerView> e)
{
base.OnElementChanged(e);
if (Control == null)
{
if (Context is Activity activity)
{
await PermissionsHandler.RequestPermissionsAsync(activity);
}
cameraPreview = new DroidCameraView(Context);
cameraPreview.Type = Element.Camera;
SetNativeControl(cameraPreview);
Element.Init(cameraPreview);
}
}
