Examples of java.awt.image.PixelInterleavedSampleModel

java.awt.image.PixelInterleavedSampleModel
This class represents image data which is stored in a pixel interleaved fashion and for which each sample of a pixel occupies one data element of the DataBuffer. It subclasses ComponentSampleModel but provides a more efficent implementation for accessing pixel interleaved image data than is provided by ComponentSampleModel. This class stores sample data for all bands in a single bank of the DataBuffer. Accessor methods are provided so that image data can be manipulated directly. Pixel stride is the number of data array elements between two samples for the same band on the same scanline. 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. Band offsets denote the number of data array elements from the first data array element of the bank of the DataBuffer holding each band to the first sample of the band. The bands are numbered from 0 to N-1. Bank indices denote the correspondence between a bank of the data buffer and a band of image data. This class supports {@link DataBuffer#TYPE_BYTE TYPE_BYTE}, {@link DataBuffer#TYPE_USHORT TYPE_USHORT}, {@link DataBuffer#TYPE_SHORT TYPE_SHORT}, {@link DataBuffer#TYPE_INT TYPE_INT}, {@link DataBuffer#TYPE_FLOAT TYPE_FLOAT} and{@link DataBuffer#TYPE_DOUBLE TYPE_DOUBLE} datatypes.

                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);


            RenderedImage rimg = new FormatRed(GraphicsUtil.wrap(img), sm);
            tiffEncoder.encode(rimg);
            ostream.flush();

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    private static SampleModel createPixelInterleavedSampleModel
        (int dataType, int tileWidth, int tileHeight, int bands) {
        int [] bandOffsets = new int[bands];
        for (int i=0; i<bands; i++)
            bandOffsets[i] = i;
        return new PixelInterleavedSampleModel
            (dataType, tileWidth, tileHeight, bands,
             tileWidth*bands, bandOffsets);
    }

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                // band offsets.
                int[] reverseOffsets = new int[numBands];
                for (int i=0; i<numBands; i++) {
                    reverseOffsets[i] = numBands - 1 - i;
                }
                sampleModel = new PixelInterleavedSampleModel
                    (dataType, tileWidth, tileHeight,
                     numBands, numBands*tileWidth, reverseOffsets);


                if(imageType == TYPE_GRAY) {
                  colorModel = new ComponentColorModel
                    (ColorSpace.getInstance(ColorSpace.CS_GRAY),
                     new int[] { sampleSize }, false, false,
                     Transparency.OPAQUE, dataType);
                } else if (imageType == TYPE_RGB) {
                  colorModel = new ComponentColorModel
                    (ColorSpace.getInstance(ColorSpace.CS_sRGB),
                     new int[] { sampleSize, sampleSize, sampleSize },
                     false, false, Transparency.OPAQUE, dataType);
                } else { // hasAlpha
                    // Transparency.OPAQUE signifies image data that is
                    // completely opaque, meaning that all pixels have an alpha
                    // value of 1.0. So the extra band gets ignored, which is
                    // what we want.
                    int transparency = Transparency.OPAQUE;
                    if(extraSamples == 1) { // associated (premultiplied) alpha
                        transparency = Transparency.TRANSLUCENT;
                    } else if(extraSamples == 2) { // unassociated alpha
                        transparency = Transparency.BITMASK;
                    }


                    colorModel =
                        createAlphaComponentColorModel(dataType,
                                                       numBands,
                                                       extraSamples == 1,
                                                       transparency);
                }
                break;


            case TYPE_GENERIC:
            case TYPE_YCBCR_SUB:
                // For this case we can't display the image, so we create a
                // SampleModel with increasing bandOffsets, and keep the
                // ColorModel as null, as there is no appropriate ColorModel.


                int[] bandOffsets = new int[numBands];
                for (int i=0; i<numBands; i++) {
                    bandOffsets[i] = i;
                }


                sampleModel = new PixelInterleavedSampleModel
                    (dataType, tileWidth, tileHeight,
                     numBands, numBands * tileWidth, bandOffsets);
                colorModel = null;
                break;

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              new ComponentColorModel
                  (ColorSpace.getInstance(ColorSpace.CS_GRAY),
                   new int [] {8}, false, false,
                   Transparency.OPAQUE, 
                   DataBuffer.TYPE_BYTE),
              new PixelInterleavedSampleModel
                  (DataBuffer.TYPE_BYTE, 
                   src.getSampleModel().getWidth(),
                   src.getSampleModel().getHeight(),
                   1, src.getSampleModel().getWidth(),
                   new int [] { 0 }),

View Full Code Here

        // Note: Our source will always have either one or two bands
        // since we insert an Any2Lum transform before ourself in the
        // rendering chain.


        Raster srcRas = srcRed.getData(wr.getBounds());
        PixelInterleavedSampleModel srcSM;
        srcSM = (PixelInterleavedSampleModel)srcRas.getSampleModel();


        DataBufferByte srcDB = (DataBufferByte)srcRas.getDataBuffer();
        byte []        src   = srcDB.getData();
        
        PixelInterleavedSampleModel dstSM;
        dstSM = (PixelInterleavedSampleModel)wr.getSampleModel();


        DataBufferByte dstDB = (DataBufferByte)wr.getDataBuffer();
        byte []        dst   = dstDB.getData();


        int srcX0 = srcRas.getMinX()-srcRas.getSampleModelTranslateX();
        int srcY0 = srcRas.getMinY()-srcRas.getSampleModelTranslateY();


        int dstX0 = wr.getMinX()-wr.getSampleModelTranslateX();
        int dstX1 = dstX0+wr.getWidth()-1;
        int dstY0 = wr.getMinY()-wr.getSampleModelTranslateY();


        int    srcStep = srcSM.getPixelStride();
        int [] offsets = srcSM.getBandOffsets();
        int    srcLOff = offsets[0];
        int    srcAOff = offsets[1];


        if (srcRed.getColorModel().isAlphaPremultiplied()) {
            // Lum is already multiplied by alpha so we just copy lum channel.
            for (int y=0; y<srcRas.getHeight(); y++) {
                int srcI  = srcDB.getOffset() + srcSM.getOffset(srcX0,  srcY0);
                int dstI  = dstDB.getOffset() + dstSM.getOffset(dstX0,  dstY0);
                int dstE  = dstDB.getOffset() + dstSM.getOffset(dstX1+1,dstY0);


                srcI += srcLOff; // Go to Lum Channel (already mult by alpha).


                while (dstI < dstE) {
                    dst[dstI++] = src[srcI];
                        srcI += srcStep; // Go to next pixel
                }
                srcY0++;
                dstY0++;
            }
        }
        else {
            // This allows me to pre-adjust my index by srcLOff
            // Then only add the offset for srcAOff
            srcAOff = srcAOff-srcLOff;


            for (int y=0; y<srcRas.getHeight(); y++) {
                int srcI  = srcDB.getOffset() + srcSM.getOffset(srcX0,  srcY0);
                int dstI  = dstDB.getOffset() + dstSM.getOffset(dstX0,  dstY0);
                int dstE  = dstDB.getOffset() + dstSM.getOffset(dstX1+1,dstY0);


                srcI += srcLOff;


                while (dstI < dstE) {
                    int sl = (src[srcI])&0xFF; // LOff already included

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        int [] offsets = new int[b];
        for (int i=0; i < b; i++) 
            offsets[i] = i;


        // Really should check DataType range in srcSM...
        return new PixelInterleavedSampleModel(DataBuffer.TYPE_BYTE,
                                               w, h, b, w*b, offsets);
    }

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              new ComponentColorModel
                  (ColorSpace.getInstance(ColorSpace.CS_GRAY),
                   new int [] {8}, false, false,
                   Transparency.OPAQUE, 
                   DataBuffer.TYPE_BYTE),
              new PixelInterleavedSampleModel
                  (DataBuffer.TYPE_BYTE, 
                   src.getSampleModel().getWidth(),
                   src.getSampleModel().getHeight(),
                   1, src.getSampleModel().getWidth(),
                   new int [] { 0 }),

View Full Code Here

        // Note: Our source will always have either one or two bands
        // since we insert an Any2Lum transform before ourself in the
        // rendering chain.


        Raster srcRas = srcRed.getData(wr.getBounds());
        PixelInterleavedSampleModel srcSM;
        srcSM = (PixelInterleavedSampleModel)srcRas.getSampleModel();


        DataBufferByte srcDB = (DataBufferByte)srcRas.getDataBuffer();
        byte []        src   = srcDB.getData();
        
        PixelInterleavedSampleModel dstSM;
        dstSM = (PixelInterleavedSampleModel)wr.getSampleModel();


        DataBufferByte dstDB = (DataBufferByte)wr.getDataBuffer();
        byte []        dst   = dstDB.getData();


        int srcX0 = srcRas.getMinX()-srcRas.getSampleModelTranslateX();
        int srcY0 = srcRas.getMinY()-srcRas.getSampleModelTranslateY();


        int dstX0 = wr.getMinX()-wr.getSampleModelTranslateX();
        int dstX1 = dstX0+wr.getWidth()-1;
        int dstY0 = wr.getMinY()-wr.getSampleModelTranslateY();


        int    srcStep = srcSM.getPixelStride();
        int [] offsets = srcSM.getBandOffsets();
        int    srcLOff = offsets[0];
        int    srcAOff = offsets[1];


        if (srcRed.getColorModel().isAlphaPremultiplied()) {
            // Lum is already multiplied by alpha so we just copy lum channel.
            for (int y=0; y<srcRas.getHeight(); y++) {
                int srcI  = srcDB.getOffset() + srcSM.getOffset(srcX0,  srcY0);
                int dstI  = dstDB.getOffset() + dstSM.getOffset(dstX0,  dstY0);
                int dstE  = dstDB.getOffset() + dstSM.getOffset(dstX1+1,dstY0);


                srcI += srcLOff; // Go to Lum Channel (already mult by alpha).


                while (dstI < dstE) {
                    dst[dstI++] = src[srcI];
                        srcI += srcStep; // Go to next pixel
                }
                srcY0++;
                dstY0++;
            }
        }
        else {
            // This allows me to pre-adjust my index by srcLOff
            // Then only add the offset for srcAOff
            srcAOff = srcAOff-srcLOff;


            for (int y=0; y<srcRas.getHeight(); y++) {
                int srcI  = srcDB.getOffset() + srcSM.getOffset(srcX0,  srcY0);
                int dstI  = dstDB.getOffset() + dstSM.getOffset(dstX0,  dstY0);
                int dstE  = dstDB.getOffset() + dstSM.getOffset(dstX1+1,dstY0);


                srcI += srcLOff;


                while (dstI < dstE) {
                    int sl = (src[srcI])&0xFF; // LOff already included

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        int height = sm.getHeight();


        ColorModel  cm = src.getColorModel();
        if (cm != null) {
            if (cm.hasAlpha()) 
                return new PixelInterleavedSampleModel
                    (DataBuffer.TYPE_BYTE, width, height, 2, 2*width,
                     new int [] { 0, 1 });


            return new PixelInterleavedSampleModel
                (DataBuffer.TYPE_BYTE, width, height, 1, width,
                 new int [] { 0 });
        }
        else {
            // No ColorModel so try to make some intelligent
            // decisions based just on the number of bands...
            // 1 bands -> lum
            // 2 bands -> lum (Band 0) & alpha (Band 1)
            // >2 bands -> lum (Band 0) - No color conversion...
            if (sm.getNumBands() == 2)
                return new PixelInterleavedSampleModel
                    (DataBuffer.TYPE_BYTE, width, height, 2, 2*width,
                     new int [] { 0, 1 });


            return new PixelInterleavedSampleModel
                (DataBuffer.TYPE_BYTE, width, height, 1, width,
                 new int [] { 0 });
        }
    }

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        int [] offsets = new int[b];
        for (int i=0; i < b; i++)
            offsets[i] = i;


        // Really should check DataType range in srcSM...
        return new PixelInterleavedSampleModel(DataBuffer.TYPE_BYTE,
                                               w, h, b, w*b, offsets);
    }

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