public VideoTrack(PullSourceStream stream) throws ResourceUnavailableException {
      super();

      this.stream = stream;
      // set format

      // read first frame to determine format
      final Buffer buffer = new Buffer();
      readFrame(buffer);
      if (buffer.isDiscard() || buffer.isEOM())
        throw new ResourceUnavailableException("Unable to read first frame");
      // TODO: catch runtime exception too?

      // parse jpeg
      final java.awt.Image image;
      try {
        image =
            ImageIO.read(
                new ByteArrayInputStream(
                    (byte[]) buffer.getData(), buffer.getOffset(), buffer.getLength()));
      } catch (IOException e) {
        logger.log(Level.WARNING, "" + e, e);
        throw new ResourceUnavailableException("Error reading image: " + e);
      }

      if (image == null) {
        logger.log(Level.WARNING, "Failed to read image (ImageIO.read returned null).");
        throw new ResourceUnavailableException();
      }

      if (frameContentType.equals("image/jpeg"))
        format =
            new JPEGFormat(
                new Dimension(image.getWidth(null), image.getHeight(null)),
                Format.NOT_SPECIFIED,
                Format.byteArray,
                -1.f,
                Format.NOT_SPECIFIED,
                Format.NOT_SPECIFIED);
      else if (frameContentType.equals("image/gif"))
        format =
            new GIFFormat(
                new Dimension(image.getWidth(null), image.getHeight(null)),
                Format.NOT_SPECIFIED,
                Format.byteArray,
                -1.f);
      else if (frameContentType.equals("image/png"))
        format =
            new PNGFormat(
                new Dimension(image.getWidth(null), image.getHeight(null)),
                Format.NOT_SPECIFIED,
                Format.byteArray,
                -1.f);
      else
        throw new ResourceUnavailableException(
            "Unsupported frame content type: " + frameContentType);
      // TODO: this discards first image. save and return first time
      // readFrame is called.

    }
Пример #2
0
  public static java.awt.image.BufferedImage loadBufferedImageFromResources(
      Component c, String filename) {

    try {
      Misc m = new Misc();
      java.awt.Image img = loadImageFromResources(filename);
      MediaTracker mt = new MediaTracker(c);
      mt.addImage(img, 0);
      mt.waitForID(0);
      int width = img.getWidth(null);
      int height = img.getHeight(null);
      BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
      Graphics gg = bi.getGraphics();
      gg.drawImage(img, 0, 0, null);
      gg.dispose();
      return bi;
    } catch (Exception ex) {
      System.out.println(ex.toString());
    }
    return null;
  }