// Opens the camera specified by {@link Camera2BasicFragment#mCameraId}.
public void OpenCamera(int width, int height)
{
SetUpCameraOutputs(width, height);
ConfigureTransform(width, height);
var activity = Activity;
var manager = (CameraManager)activity.GetSystemService(Context.CameraService);
try
{
if (CameraOpenCloseLock.TryAcquire(2500, TimeUnit.Milliseconds) == false)
{
throw new RuntimeException("Time out waiting to lock camera opening.");
}
if (string.IsNullOrEmpty(_cameraId) == false)
{
manager.OpenCamera(_cameraId, _stateCallback, BackgroundHandler);
}
}
catch (Java.Lang.SecurityException ex)
{
#if DEBUG
ex.PrintStackTrace();
#endif
}
catch (CameraAccessException ex)
{
#if DEBUG
ex.PrintStackTrace();
#endif
}
catch (InterruptedException ex)
{
throw new RuntimeException("Interrupted while trying to lock camera opening.", ex);
}
}
// Closes the current {@link CameraDevice}.
protected void CloseCamera()
{
if (CaptureSession == null)
{
return;
}
try
{
CameraOpenCloseLock.Acquire();
if (null != CaptureSession)
{
try
{
CaptureSession.StopRepeating();
CaptureSession.AbortCaptures();
}
catch (CameraAccessException ex)
{
#if DEBUG
ex.PrintStackTrace();
#endif
}
catch (IllegalStateException ex)
{
#if DEBUG
ex.PrintStackTrace();
#endif
}
CaptureSession.Close();
CaptureSession = null;
}
if (null != CameraDevice)
{
CameraDevice.Close();
CameraDevice = null;
}
if (null != _imageReader)
{
_imageReader.Close();
_imageReader = null;
}
}
catch (InterruptedException ex)
{
throw new RuntimeException("Interrupted while trying to lock camera closing.", ex);
}
finally
{
CameraOpenCloseLock.Release();
}
}
// Undone: Call from Dispose()
/// <inheritdoc />
protected override async Task CloseCamera()
{
try
{
await CameraOpenCloseLock.WaitAsync().ConfigureAwait(false);
await base.CloseCamera().ConfigureAwait(false);
if (_imageReader != null)
{
_imageReader.Close();
_imageReader = null;
}
}
catch (InterruptedException e)
{
throw new RuntimeException("Interrupted while trying to lock camera closing.", e);
}
finally
{
CameraOpenCloseLock.Release();
}
}
