Examples of com.lightcrafts.mediax.jai.RasterFormatTag

com.lightcrafts.mediax.jai.RasterFormatTag
This class encapsulates the information needed for RasterAccessor to understand how a Raster is laid out. It's designed so that one RasterFormatTag can be constructed per source and that RasterFormatTag can cache information that the RasterAccessor would otherwise have to extract from the Raster each time it's constructed (generally each time OpImage.computeRect() is called.) Additionally, it can cache various arrays (i.e. bankIndices[] and bandOffsets[]) that would otherwise be cloned everytime they were requested. Because of the way SampleModel.createCompatibleSampleModel() is designed not all fields of a particular SampleModel will match those of the SampleModel returned by SampleModel.createCompatibleSampleModel(). Values like pixelStride and numBands won't change, but values like bankIndicies[] and bandOffsets[] might if the underlying Raster is not pixelSequential. Rasters which are pixelSequential meet the following conditions 1) The SampleModel is a ComponentSampleModel. 2) The pixelStride is equal to the number of bands. 3) All the bankIndices[] are equal. 4) All the bandOffsets[] values are less than pixelStride 5) No two bandOffsets[] values are equal. For that reason, RasterFormatTags representing non pixelSequential rasters don't attempt to cache the bandOffsets[] or bankIndices[]. For such rasters, this information should be taken directly from the raster itself. Note that any RasterFormatTag that will cause data to be copied from the Raster will be pixelSequential as that is the format in which data is returned from Raster.getPixels() returns.


        // Add bit support?
        int sTagID = RasterAccessor.findCompatibleTag(null, srcSampleModel);
        int dTagID = RasterAccessor.findCompatibleTag(null, dstSampleModel);


        RasterFormatTag sTag = new RasterFormatTag(srcSampleModel,sTagID);
        RasterFormatTag dTag = new RasterFormatTag(dstSampleModel,dTagID);


        RasterAccessor s = new RasterAccessor(src, rect, sTag, null);
        RasterAccessor d = new RasterAccessor(dst, rect, dTag, null);


        /*int srcNumBands = s.getNumBands();

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            SampleModel[] sampleModels = { getSampleModel() };
            int tagID =
                RasterAccessor.findCompatibleTag(sampleModels,
                                                 dest.getSampleModel());


            RasterFormatTag srcTag =
                new RasterFormatTag(getSampleModel(),tagID);
            RasterFormatTag dstTag =
                new RasterFormatTag(dest.getSampleModel(),tagID);


            for (int ty = startTileY; ty <= endTileY; ty++) {
                for (int tx = startTileX; tx <= endTileX; tx++) {
                    Raster tile = getTile(tx, ty);
                    Rectangle subRegion =

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        // Create source accessors.
        RasterAccessor[] s = new RasterAccessor[numSources];
        for(int i = 0; i < numSources; i++) {
            if(sources[i] != null) {
                RasterFormatTag formatTag =
                    new RasterFormatTag(sources[i].getSampleModel(),
                                        formatTagID);
                s[i] = new RasterAccessor(sources[i], destRect, formatTag,
                                          null);
            }
        }


        // Create dest accessor.
        RasterAccessor d =
            new RasterAccessor(dest, destRect,
                               new RasterFormatTag(dest.getSampleModel(),
                                                   formatTagID),
                               null);


        // Create the alpha accessors.
        RasterAccessor[] a = new RasterAccessor[numSources];
        if(alphaRaster != null) {
            for(int i = 0; i < numSources; i++) {
                if(alphaRaster[i] != null) {
                    SampleModel alphaSM = alphaRaster[i].getSampleModel();
                    int alphaFormatTagID =
                        RasterAccessor.findCompatibleTag(null, alphaSM);
                    RasterFormatTag alphaFormatTag =
                        new RasterFormatTag(alphaSM, alphaFormatTagID);
                    a[i] = new RasterAccessor(alphaRaster[i], destRect,  
                                              alphaFormatTag,
                                              sourceAlpha[i].getColorModel());
                }
            }

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              layout.getWidth(null), layout.getHeight(null));


        // Set the format tag if and only if we will use the RasterAccessor.
        if(getTileWidth() != getWidth() || getTileHeight() != getHeight()) {
            rasterFormatTag =
                new RasterFormatTag(getSampleModel(),
                                    RasterAccessor.TAG_BYTE_UNCOPIED);
        }


        // Grab the entire image
        this.pixels = new int[width * height];

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        if (source2Alpha != null) {
            renderedSources[3] = source2Alpha;
            source2AlphaRaster = source2Alpha.getData(destRect);    
        }


        RasterFormatTag tags[] = 
            RasterAccessor.findCompatibleTags(renderedSources, this);
        RasterAccessor s1 = new RasterAccessor(sources[0], destRect, 
                                          tags[0],getSourceImage(0).getColorModel());
        RasterAccessor s2 = new RasterAccessor(sources[1], destRect, 
                                          tags[1],getSourceImage(1).getColorModel());

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Related Classes of com.lightcrafts.mediax.jai.RasterFormatTag

com.lightcrafts.jai.LightnessLookupTable

com.lightcrafts.media.jai.opimage.AWTImageOpImage

com.lightcrafts.media.jai.opimage.CompositeOpImage

com.lightcrafts.media.jai.opimage.MosaicOpImage

com.lightcrafts.mediax.jai.remote.SerializableRenderedImage

java.awt.image.ComponentSampleModel

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