예제 #1
0
  @Override
  protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (!active) {
      return;
    }
    DownloadService downloadService = DownloadServiceImpl.getInstance();
    if (downloadService != null && downloadService.getPlayerState() != PlayerState.STARTED) {
      return;
    }

    if (data == null) {
      return;
    }

    if (points == null || points.length < data.length * 4) {
      points = new float[data.length * 4];
    }

    int w = getWidth();
    int h = getHeight();

    for (int i = 0; i < data.length - 1; i++) {
      points[i * 4] = w * i / (data.length - 1);
      points[i * 4 + 1] = h / 2 + ((byte) (data[i] + 128)) * (h / 2) / 128;
      points[i * 4 + 2] = w * (i + 1) / (data.length - 1);
      points[i * 4 + 3] = h / 2 + ((byte) (data[i + 1] + 128)) * (h / 2) / 128;
    }

    canvas.drawLines(points, paint);
  }
예제 #2
0
 private Visualizer getVizualiser() {
   DownloadService downloadService = DownloadServiceImpl.getInstance();
   VisualizerController visualizerController =
       downloadService == null ? null : downloadService.getVisualizerController();
   return visualizerController == null ? null : visualizerController.getVisualizer();
 }