Examples of java.awt.image.SinglePixelPackedSampleModel

java.awt.image.SinglePixelPackedSampleModel
This class represents pixel data packed such that the N samples which make up a single pixel are stored in a single data array element, and each data data array element holds samples for only one pixel. This class supports {@link DataBuffer#TYPE_BYTE TYPE_BYTE}, {@link DataBuffer#TYPE_USHORT TYPE_USHORT}, {@link DataBuffer#TYPE_INT TYPE_INT} data types.All data array elements reside in the first bank of a DataBuffer. Accessor methods are provided so that the image data can be manipulated directly. Scanline stride is the number of data array elements between a given sample and the corresponding sample in the same column of the next scanline. Bit masks are the masks required to extract the samples representing the bands of the pixel. Bit offsets are the offsets in bits into the data array element of the samples representing the bands of the pixel.
The following code illustrates extracting the bits of the sample representing band b for pixel x,y from DataBuffer data:
```
 int sample = data.getElem(y * scanlineStride + x); sample = (sample & bitMasks[b]) >>> bitOffsets[b]; 
```

                                         in.readInt(),
                                         (int[])in.readObject(),
                                         (int[])in.readObject());
            break;
        case TYPE_SINGLE_PIXEL_PACKED:
            sampleModel = new SinglePixelPackedSampleModel(in.readInt(),
                                                           in.readInt(),
                                                           in.readInt(),
                                                           in.readInt(),
                                                           (int[])in.readObject());
            break;

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            layout.setTileGridXOffset(layout.getMinX(null));
            layout.setTileGridYOffset(layout.getMinY(null));


            int[] bitMasks = new int[] {0x00ff0000, 0x0000ff00, 0x000000ff};
            layout.setSampleModel(
                new SinglePixelPackedSampleModel(DataBuffer.TYPE_INT,
                                                 layout.getWidth(null),
                                                 layout.getHeight(null),
                                                 bitMasks));
        } else {
            layout.setSampleModel(RasterFactory.createPixelInterleavedSampleModel(

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                        biSrc[b] == biDst[b] &&
                        boSrc[b] == boDst[b];
                }
            } else if (sampleModel instanceof
                      SinglePixelPackedSampleModel) {
                SinglePixelPackedSampleModel smSrc =
                    (SinglePixelPackedSampleModel)srcSM;
                SinglePixelPackedSampleModel smDst =
                    (SinglePixelPackedSampleModel)sampleModel;
                isCompatible = isCompatible &&
                    smSrc.getScanlineStride() == smDst.getScanlineStride();
                int[] bmSrc = smSrc.getBitMasks();
                int[] bmDst = smDst.getBitMasks();
                for(int b = 0; b < numBands && isCompatible; b++) {
                    isCompatible = isCompatible &&
                        bmSrc[b] == bmDst[b];
                }
            } else if (sampleModel instanceof MultiPixelPackedSampleModel) {
                MultiPixelPackedSampleModel smSrc =
                    (MultiPixelPackedSampleModel)srcSM;
                MultiPixelPackedSampleModel smDst =
                    (MultiPixelPackedSampleModel)sampleModel;
                isCompatible = isCompatible &&
                    smSrc.getPixelBitStride() == smDst.getPixelBitStride() &&
                    smSrc.getScanlineStride() == smDst.getScanlineStride() &&
                    smSrc.getDataBitOffset() == smDst.getDataBitOffset();
            } else {
                isCompatible = false;
            }
        }

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        final DataBufferInt db = (DataBufferInt)r.getDataBuffer();




        final int[] pixels = db.getBankData()[0];


        final SinglePixelPackedSampleModel sppsm;
        sppsm = (SinglePixelPackedSampleModel)r.getSampleModel();




        final int scanStride = sppsm.getScanlineStride();
        final int scanStridePP = scanStride + 1;
        final int scanStrideMM = scanStride - 1;
        int a = 0;
        int i=0, j=0;
        double prpc=0, prcc=0, prnc=0;
        double crpc=0, crcc=0, crnc=0;
        double nrpc=0, nrcc=0, nrnc=0;
        double invNorm;


        final double quarterSurfaceScaleX = surfaceScaleX / 4f;
        final double quarterSurfaceScaleY = surfaceScaleY / 4f;
        final double halfSurfaceScaleX = surfaceScaleX / 2f;
        final double halfSurfaceScaleY = surfaceScaleY /2;
        final double thirdSurfaceScaleX = surfaceScaleX / 3f;
        final double thirdSurfaceScaleY = surfaceScaleY / 3f;
        final double twoThirdSurfaceScaleX = surfaceScaleX * 2 / 3f;
        final double twoThirdSurfaceScaleY = surfaceScaleY * 2 / 3f;


        final double pixelScale = 1.0/255;


        if(w <= 0)
            return N;
        // Process pixels on the border
        if(h <= 0)
            return N;


        final int xEnd   = Math.min(srcRect.x+srcRect.width -1, x+w);
        final int yEnd   = Math.min(srcRect.y+srcRect.height-1, y+h);
        final int offset = 
            (db.getOffset() +
             sppsm.getOffset(srcRect.x -r.getSampleModelTranslateX(), 
                             srcRect.y -r.getSampleModelTranslateY()));


        int yloc=y;
        if (yloc < srcRect.y) {
            yloc = srcRect.y;

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            y1 = src.getMinY()+src.getHeight()-1;


        int width  = x1-x0+1;
        int height = y1-y0+1;


        SinglePixelPackedSampleModel srcSPPSM;
        srcSPPSM = (SinglePixelPackedSampleModel)src.getSampleModel();


        final int     srcScanStride = srcSPPSM.getScanlineStride();
        DataBufferInt srcDB         = (DataBufferInt)src.getDataBuffer();
        final int []  srcPixels     = srcDB.getBankData()[0];
        final int     srcBase =
            (srcDB.getOffset() +
             srcSPPSM.getOffset(x0-src.getSampleModelTranslateX(),
                                y0-src.getSampleModelTranslateY()));




        SinglePixelPackedSampleModel dstSPPSM;
        dstSPPSM = (SinglePixelPackedSampleModel)dst.getSampleModel();


        final int     dstScanStride = dstSPPSM.getScanlineStride();
        DataBufferInt dstDB         = (DataBufferInt)dst.getDataBuffer();
        final int []  dstPixels     = dstDB.getBankData()[0];
        final int     dstBase =
            (dstDB.getOffset() +
             dstSPPSM.getOffset(x0-dst.getSampleModelTranslateX(),
                                y0-dst.getSampleModelTranslateY()));


        if ((srcScanStride == dstScanStride) &&
            (srcScanStride == width)) {
            // System.out.println("VERY Fast copyData");

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        if(!(sm instanceof SinglePixelPackedSampleModel)) return false;


        // Check transfer type
        if(sm.getDataType() != DataBuffer.TYPE_INT)       return false;


        SinglePixelPackedSampleModel sppsm;
        sppsm = (SinglePixelPackedSampleModel)sm;


        int [] masks = sppsm.getBitMasks();
        if (masks.length == 3) {
            if (requireAlpha) return false;
        } else if (masks.length != 4)
            return false;

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        }


    protected static void divide_INT_PACK_Data(WritableRaster wr) {
        // System.out.println("Divide Int");


        SinglePixelPackedSampleModel sppsm;
        sppsm = (SinglePixelPackedSampleModel)wr.getSampleModel();


        final int width = wr.getWidth();


        final int scanStride = sppsm.getScanlineStride();
        DataBufferInt db = (DataBufferInt)wr.getDataBuffer();
        final int base
            = (db.getOffset() +
               sppsm.getOffset(wr.getMinX()-wr.getSampleModelTranslateX(),
                               wr.getMinY()-wr.getSampleModelTranslateY()));
        int pixel, a, aFP, n=0;
        // Access the pixel data array
        final int pixels[] = db.getBankData()[0];
        for (int y=0; y<wr.getHeight(); y++) {

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    }


    protected static void mult_INT_PACK_Data(WritableRaster wr) {
        // System.out.println("Multiply Int: " + wr);


        SinglePixelPackedSampleModel sppsm;
        sppsm = (SinglePixelPackedSampleModel)wr.getSampleModel();


        final int width = wr.getWidth();


        final int scanStride = sppsm.getScanlineStride();
        DataBufferInt db = (DataBufferInt)wr.getDataBuffer();
        final int base
            = (db.getOffset() +
               sppsm.getOffset(wr.getMinX()-wr.getSampleModelTranslateX(),
                               wr.getMinY()-wr.getSampleModelTranslateY()));
        int n=0;
        // Access the pixel data array
        final int pixels[] = db.getBankData()[0];
        for (int y=0; y<wr.getHeight(); y++) {

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                 (KEY_FORCE_TRANSPARENT_WHITE)).booleanValue();
        }


        int w = img.getWidth();
        int h = img.getHeight();
        SinglePixelPackedSampleModel sppsm;
        sppsm = (SinglePixelPackedSampleModel)img.getSampleModel();


        if (forceTransparentWhite) {
            //
            // This is a trick so that viewers which do not support
            // the alpha channel will see a white background (and not
            // a black one).
            //
            DataBufferInt biDB=(DataBufferInt)img.getRaster().getDataBuffer();
            int scanStride = sppsm.getScanlineStride();
            int dbOffset = biDB.getOffset();
            int pixels[] = biDB.getBankData()[0];
            int p = dbOffset;
            int adjust = scanStride - w;
            int a=0, r=0, g=0, b=0, pel=0;
            for(int i=0; i<h; i++){
                for(int j=0; j<w; j++){
                    pel = pixels[p];
                    a = (pel >> 24) & 0xff;
                    r = (pel >> 16) & 0xff;
                    g = (pel >> 8 ) & 0xff;
                    b =  pel        & 0xff;
                    r = (255*(255 -a) + a*r)/255;
                    g = (255*(255 -a) + a*g)/255;
                    b = (255*(255 -a) + a*b)/255;
                    pixels[p++] =
                        (a<<24 & 0xff000000) |
                        (r<<16 & 0xff0000) |
                        (g<<8  & 0xff00) |
                        (b     & 0xff);
                }
                p += adjust;
            }
        }


        try {
            TIFFImageEncoder tiffEncoder = 
                new TIFFImageEncoder(ostream, params);
            int bands = sppsm.getNumBands();
            int [] off = new int[bands];
            for (int i=0; i<bands; i++)
                off[i] = i;
            SampleModel sm = new PixelInterleavedSampleModel
                (DataBuffer.TYPE_BYTE, w, h, bands, w*bands, off);

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            int w =dstOut.getWidth();


            int y0=dstOut.getMinY();
            int h =dstOut.getHeight();


            SinglePixelPackedSampleModel srcSPPSM;
            srcSPPSM = (SinglePixelPackedSampleModel)src.getSampleModel();


            final int     srcScanStride = srcSPPSM.getScanlineStride();
            DataBufferInt srcDB         = (DataBufferInt)src.getDataBuffer();
            final int []  srcPixels     = srcDB.getBankData()[0];
            final int     srcBase =
                (srcDB.getOffset() +
                 srcSPPSM.getOffset(x0-src.getSampleModelTranslateX(),
                                    y0-src.getSampleModelTranslateY()));




            SinglePixelPackedSampleModel dstInSPPSM;
            dstInSPPSM = (SinglePixelPackedSampleModel)dstIn.getSampleModel();


            final int dstInScanStride = dstInSPPSM.getScanlineStride();
            DataBufferInt dstInDB     = (DataBufferInt)dstIn.getDataBuffer();
            final int []  dstInPixels     = dstInDB.getBankData()[0];
            final int     dstInBase =
                (dstInDB.getOffset() +
                 dstInSPPSM.getOffset(x0-dstIn.getSampleModelTranslateX(),
                                      y0-dstIn.getSampleModelTranslateY()));


            SinglePixelPackedSampleModel dstOutSPPSM
                = (SinglePixelPackedSampleModel)dstOut.getSampleModel();


            final int dstOutScanStride = dstOutSPPSM.getScanlineStride();
            DataBufferInt dstOutDB     = (DataBufferInt)dstOut.getDataBuffer();
            final int []  dstOutPixels     = dstOutDB.getBankData()[0];
            final int     dstOutBase =
                (dstOutDB.getOffset() +
                 dstOutSPPSM.getOffset(x0-dstOut.getSampleModelTranslateX(),
                                       y0-dstOut.getSampleModelTranslateY()));


            final int   srcAdjust  =    srcScanStride - w;
            final int  dstInAdjust =  dstInScanStride - w;
            final int dstOutAdjust = dstOutScanStride - w;

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