コード例 #1
0
  private void initSequenceGrabber() throws QTException {
    if (sequenceGrabberInitialized) return;
    QTSession.open();

    sg = new SequenceGrabber();

    vc = new SGVideoChannel(sg);
    // cameraImageSize = new QDRect(320, 240);
    if (overrideVideoFormat != null)
      cameraImageSize = new QDRect(overrideVideoFormat.getWidth(), overrideVideoFormat.getHeight());
    else {
      cameraImageSize = vc.getSrcVideoBounds();
      logger.info(
          "Camera image size reported as: "
              + cameraImageSize.getWidth()
              + "x"
              + cameraImageSize.getHeight());

      // this is a workaround found at
      // http://rsb.info.nih.gov/ij/plugins/download/QuickTime_Capture.java
      // and other places for the isight, which gives the wrong resolution.
      // TODO: find a better way of identifying the isight.
      Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
      if (cameraImageSize.getHeight() > screen.height - 40) // iSight camera claims to 1600x1200!
      {
        logger.warning(
            "Camera image size reported as: "
                + cameraImageSize.getWidth()
                + "x"
                + cameraImageSize.getHeight()
                + "; resizing to 640x480");
        cameraImageSize.resize(640, 480);
      }
    }
    // On PPC (big endian) we use: k32ARGBPixelFormat
    // On Intel we use: k32ABGRPixelFormat
    // fails on PPC with DepthErrInvalid: k32ABGRPixelFormat, k32BGRAPixelFormat, k32RGBAPixelFormat
    gWorld =
        new QDGraphics(
            bigEndian ? QDConstants.k32ARGBPixelFormat : QDConstants.k32ABGRPixelFormat,
            cameraImageSize); // set a specific pixel format so we can predictably convert to
                              // buffered image below.
    sg.setGWorld(gWorld, null);
    vc.setBounds(cameraImageSize);
    vc.setUsage(quicktime.std.StdQTConstants.seqGrabRecord);
    vc.setFrameRate(0);
    myCodec = quicktime.std.StdQTConstants.kComponentVideoCodecType;
    vc.setCompressorType(myCodec);
    sequenceGrabberInitialized = true;
  }
コード例 #2
0
  private void disposeSequenceGrabber() throws QTException {
    if (!sequenceGrabberInitialized) return;
    try {
      if (vc != null) vc.disposeQTObject();

      if (sg != null) {
        sg.stop();
        sg.disposeQTObject();
      }

      QTSession.close();
    } finally {
      sequenceGrabberInitialized = false;
    }
  }