// Creates a new {@link CameraCaptureSession} for camera preview.
public void CreateCameraPreviewSession()
{
try
{
SurfaceTexture texture = _textureView.SurfaceTexture;
if (texture == null)
{
throw new IllegalStateException("texture is null");
}
// We configure the size of default buffer to be the size of camera preview we want.
texture.SetDefaultBufferSize(_previewSize.Width, _previewSize.Height);
// This is the output Surface we need to start preview.
Surface surface = new Surface(texture);
// We set up a CaptureRequest.Builder with the output Surface.
PreviewRequestBuilder = CurrentCameraDevice.CreateCaptureRequest(CameraTemplate.Preview);
PreviewRequestBuilder.AddTarget(surface);
// Here, we create a CameraCaptureSession for camera preview.
List <Surface> surfaces = new List <Surface>();
surfaces.Add(surface);
CurrentCameraDevice.CreateCaptureSession(surfaces, new CameraCaptureSessionCallback(this), null);
}
catch (CameraAccessException e)
{
e.PrintStackTrace();
}
}
// Closes the current {@link CurrentCameraDevice}.
private void CloseCamera()
{
try
{
CameraOpenCloseLock.Acquire();
if (null != CaptureSession)
{
CaptureSession.Close();
CaptureSession = null;
}
if (null != CurrentCameraDevice)
{
CurrentCameraDevice.Close();
CurrentCameraDevice = null;
}
}
catch (InterruptedException e)
{
throw new RuntimeException("Interrupted while trying to lock camera closing.", e);
}
finally
{
CameraOpenCloseLock.Release();
}
}
