Examples of javax.media.jai.PlanarImage

javax.media.jai.PlanarImage
sun.com/j2se/1.5.0/docs/guide/refobs/"> http://java.sun.com/j2se/1.5.0/docs/guide/refobs/ for more information. These classes include weak references that allow the Garbage Collector (GC) to collect objects they reference, setting the reference to null in the process.
The reference problem requires us to be careful about how we define the reachability of directed acyclic graph (DAG) nodes. If we were to allow nodes to be reached by arbitrary graph traversal, we would be unable to garbage collect any subgraphs of an active graph at all since any node may be reached from any other. Instead, we define the set of reachable nodes as those that may be accessed directly from a reference in user code, or that are the source (not sink) of a reachable node. Reachable nodes are always accessible, whether they are reached by traversing upwards or downwards in the DAG.
A DAG may also contain nodes that are not reachable, that is, they require a downward traversal at some point. For example, assume a node A is reachable, and a call to A.getSinks() yields a Vector containing a reference to a previously unreachable node B. The node B naturally becomes reachable by virtue of the new user reference pointing to it. However, if the user were to relinquish that reference, the node might be garbage collected, and a future call to A.getSinks() might no longer include B in its return value.
Because the set of sinks of a node is inherently unstable, only the getSinks method is provided for external access to the sink vector at a node. A hypothetical method such as getSink or getNumSinks would produce confusing results should a sink be garbage collected between that call and a subsequent call to getSinks. @see java.awt.image.RenderedImage @see java.lang.ref.Reference @see java.lang.ref.WeakReference @see ImageJAI @see OpImage @see RenderedImageAdapter @see SnapshotImage @see TiledImage

           p[0] = p[1] = p[2] = (i << (netbiasshift + 8)) / maxColorNum;
           freq[i] = intbias / maxColorNum; /* 1/maxColorNum */
           bias[i] = 0;
        }


        PlanarImage source = getSourceImage(0);
        Rectangle rect = source.getBounds();


        if (roi != null)
            rect = roi.getBounds();


        RandomIter iterator = RandomIterFactory.create(source, rect);

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    protected void accumulateStatistics(String name,
                                        Raster source,
                                        Object stats) {
        // Get image and band count.
        PlanarImage sourceImage = getSourceImage(0);
        int numBands = sourceImage.getSampleModel().getNumBands();


        // Determine the format tag and create an accessor.
        int formatTag = MediaLibAccessor.findCompatibleTag(null, source);
        MediaLibAccessor srcAccessor = new MediaLibAccessor(source,
                                                            source.getBounds(),

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                                 int computeType) {
        super(source, layout, configuration, computeType);
    }


    public synchronized void dispose() {
        PlanarImage src = getSource(0);
        if(src instanceof RenderedImageAdapter) {
            // Use relection to invoke dispose();
            RenderedImage trueSrc =
                ((RenderedImageAdapter)src).getWrappedImage();
            Method disposeMethod = null;
            try {
                Class cls = trueSrc.getClass();
                disposeMethod = cls.getMethod("dispose", null);
                if(!disposeMethod.isAccessible()) {
                    AccessibleObject.setAccessible(new AccessibleObject[] {
                        disposeMethod
                    }, true);
                }
                disposeMethod.invoke(trueSrc, null);
            } catch(Exception e) {
                // Ignore it.
            }
        } else {
            // Invoke dispose() directly.
            src.dispose();
        }
    }

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    public synchronized void setRenderedSource(Long id,
                 RenderedImage source,
                 int index)
  throws RemoteException {


  PlanarImage pi = PlanarImage.wrapRenderedImage(source);


  Object obj = nodes.get(id);


  if (obj instanceof RenderedOp) {
      RenderedOp op = (RenderedOp)obj;

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     */
    public synchronized Long getRendering(Long id, SerializableState rcs)
  throws RemoteException {


  RenderableOp op = (RenderableOp)nodes.get(id);
  PlanarImage pi = PlanarImage.wrapRenderedImage(op.createRendering(
               (RenderContext)rcs.getObject()));


  Long renderingID = getRemoteID();
  nodes.put(renderingID, pi);

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    public synchronized void setRenderableSource(Long id,
             RenderedImage source,
             int index)
  throws RemoteException {


  PlanarImage pi = PlanarImage.wrapRenderedImage(source);
  RenderableOp op = (RenderableOp)nodes.get(id);
  op.setSource(pi, index);
    }

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    public synchronized Long handleEvent(Long renderedOpID, String propName,
           Object oldValue, Object newValue)
  throws RemoteException {


  RenderedOp op = (RenderedOp)nodes.get(renderedOpID);
  PlanarImage rendering = op.getRendering();


  // Get a new unique ID
  Long id = getRemoteID();
  // Cache the old rendering against the new id
  nodes.put(id, rendering);

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           SerializableState srcInvalidRegion,
           Object oldRendering)
  throws RemoteException {


  RenderedOp op = (RenderedOp)nodes.get(renderedOpID);
  PlanarImage rendering = op.getRendering();


  // Get a new unique ID
  Long id = getRemoteID();
  // Cache the old rendering against the new id
  nodes.put(id, rendering);


  // Put the op's negotiated result values for its rendering too.
  setServerNegotiatedValues(id, (NegotiableCapabilitySet)
          negotiated.get(renderedOpID));


  PlanarImage oldSrcRendering = null, newSrcRendering = null;
  String serverNodeDesc = null;
  Object src = null;


  if (oldRendering instanceof String) {

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            /**
             * 利用JAI读取源图片
             */
            ParameterBlock pb = new ParameterBlock();
            pb.add(wrap);
            PlanarImage src = JAI.create("Stream", pb);
            img = new ImageWrapper(src, DEFAULT_HIGHT_QUALITY);
            img.setImageFormat(format);


            return img;
        } catch (Exception e) {

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            imgWrapper = ImageReadHelper.read(inStream);


            if (tosRGBColorSpace) {
                for (int i = 0; i < imgWrapper.getNumOfImages(); i++) {
                    PlanarImage img = ImageColorConvertHelper.convert2sRGB(imgWrapper
                            .getAsPlanarImage(i));
                    imgWrapper.setImage(i, img);
                }
            }

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