// Sets up member variables related to camera.
private void SetUpCameraOutputs(int width, int height)
{
var activity = Activity;
var manager = (CameraManager)activity.GetSystemService(Context.CameraService);
try
{
//var cameraId = manager.GetCameraIdList()[i];
var cameraId = _context.Settings.CameraId;
CameraCharacteristics characteristics = manager.GetCameraCharacteristics(cameraId);
var map = (StreamConfigurationMap)characteristics.Get(CameraCharacteristics.ScalerStreamConfigurationMap);
mImageReader = ImageReader.NewInstance(_context.Settings.CameraResolutionSelected.Width, _context.Settings.CameraResolutionSelected.Height, ImageFormatType.Jpeg, /*maxImages*/ 2);
mImageReader.SetOnImageAvailableListener(mOnImageAvailableListener, mBackgroundHandler);
// Find out if we need to swap dimension to get the preview size relative to sensor
// coordinate.
var displayRotation = activity.WindowManager.DefaultDisplay.Rotation;
//noinspection ConstantConditions
mSensorOrientation = (int)characteristics.Get(CameraCharacteristics.SensorOrientation);
bool swappedDimensions = false;
switch (displayRotation)
{
case SurfaceOrientation.Rotation0:
case SurfaceOrientation.Rotation180:
if (mSensorOrientation == 90 || mSensorOrientation == 270)
{
swappedDimensions = true;
}
break;
case SurfaceOrientation.Rotation90:
case SurfaceOrientation.Rotation270:
if (mSensorOrientation == 0 || mSensorOrientation == 180)
{
swappedDimensions = true;
}
break;
default:
Log.Error(TAG, "Display rotation is invalid: " + displayRotation);
break;
}
Point displaySize = new Point();
activity.WindowManager.DefaultDisplay.GetSize(displaySize);
var rotatedPreviewWidth = width;
var rotatedPreviewHeight = height;
var maxPreviewWidth = displaySize.X;
var maxPreviewHeight = displaySize.Y;
if (swappedDimensions)
{
rotatedPreviewWidth = height;
rotatedPreviewHeight = width;
maxPreviewWidth = displaySize.Y;
maxPreviewHeight = displaySize.X;
}
if (maxPreviewWidth > MAX_PREVIEW_WIDTH)
{
maxPreviewWidth = MAX_PREVIEW_WIDTH;
}
if (maxPreviewHeight > MAX_PREVIEW_HEIGHT)
{
maxPreviewHeight = MAX_PREVIEW_HEIGHT;
}
// Danger, W.R.! Attempting to use too large a preview size could exceed the camera
// bus' bandwidth limitation, resulting in gorgeous previews but the storage of
// garbage capture data.
mPreviewSize = CameraUtilities.ChooseOptimalSize(map?.GetOutputSizes(Class.FromType(typeof(SurfaceTexture))),
rotatedPreviewWidth, rotatedPreviewHeight,
maxPreviewWidth, maxPreviewHeight,
_context.Settings.CameraResolutionSelected);
// We fit the aspect ratio of TextureView to the size of preview we picked.
if (AppContextLiveData.Instance.IsPortrait)
{
mTextureView.SetAspectRatio(_context.Settings.CameraResolutionSelected.Height, _context.Settings.CameraResolutionSelected.Width);
}
else
{
mTextureView.SetAspectRatio(_context.Settings.CameraResolutionSelected.Width, _context.Settings.CameraResolutionSelected.Height);
}
// Check if the flash is supported.
var available = (Boolean)characteristics.Get(CameraCharacteristics.FlashInfoAvailable);
if (available == null)
{
mFlashSupported = false;
}
else
{
mFlashSupported = (bool)available;
}
mCameraId = cameraId;
}
catch (CameraAccessException e)
{
e.PrintStackTrace();
}
catch (NullPointerException)
{
//###
// Currently an NPE is thrown when the Camera2API is used but not supported on the
// device this code runs.
ErrorDialog.NewInstance("Camera error").Show(ChildFragmentManager, FRAGMENT_DIALOG);
}
}