| 1 | package kaka.cakelight; |
| 2 | |
| 3 | import java.io.File; |
| 4 | import java.io.IOException; |
| 5 | import java.util.Optional; |
| 6 | import java.util.function.Consumer; |
| 7 | |
| 8 | public class VideoMode extends Mode { |
| 9 | private Configuration config; |
| 10 | private Thread thread; |
| 11 | private Consumer<Frame> frameConsumer; |
| 12 | private VideoDeviceListener deviceListener; |
| 13 | |
| 14 | public VideoMode() { |
| 15 | deviceListener = new VideoDeviceListener(); |
| 16 | deviceListener.onVideoDeviceChange(this::onVideoDeviceChange); |
| 17 | } |
| 18 | |
| 19 | @Override |
| 20 | public void enter(Configuration config) { |
| 21 | this.config = config; |
| 22 | deviceListener.startListening(); |
| 23 | } |
| 24 | |
| 25 | @Override |
| 26 | public void exit() { |
| 27 | thread.interrupt(); |
| 28 | deviceListener.stopListening(); |
| 29 | } |
| 30 | |
| 31 | private void startGrabberThread(File videoDevice) { |
| 32 | assert frameConsumer != null; |
| 33 | thread = new Thread() { |
| 34 | public void run() { |
| 35 | try (FrameGrabber grabber = FrameGrabber.from(videoDevice, config)) { |
| 36 | while (!isInterrupted()) { |
| 37 | Optional<Frame> frame = grabber.grabFrame(); |
| 38 | if (frameConsumer != null) frame.ifPresent(frameConsumer); |
| 39 | frame.ifPresent(VideoMode.this::onFrame); |
| 40 | // timeIt("frame", grabber::grabFrame); |
| 41 | // TODO: process frame |
| 42 | // TODO: save where the LedController can access it |
| 43 | } |
| 44 | } catch (IOException e) { |
| 45 | e.printStackTrace(); |
| 46 | } |
| 47 | } |
| 48 | }; |
| 49 | thread.start(); |
| 50 | } |
| 51 | |
| 52 | public void onVideoFrame(Consumer<Frame> consumer) { |
| 53 | frameConsumer = consumer; |
| 54 | } |
| 55 | |
| 56 | private void onFrame(Frame frame) { |
| 57 | updateWithFrame(frame.getLedFrame()); |
| 58 | } |
| 59 | |
| 60 | public void onVideoDeviceChange(Optional<File> videoDevice) { |
| 61 | // Should only happen when this mode is active! |
| 62 | if (thread != null) { |
| 63 | thread.interrupt(); |
| 64 | } |
| 65 | videoDevice.ifPresent(this::startGrabberThread); |
| 66 | } |
| 67 | } |