Examples of javax.media.jai.RasterAccessor

javax.media.jai.RasterAccessor
An adapter class for presenting non-binary image data in a ComponentSampleModel format and binary image data in a zero-offset byte array format even when the original data are not so stored. RasterAccessor is meant to make the common (ComponentSampleModel) case fast and other formats possible without forcing the OpImage writer to cover more than one case per non-binary data type.
When constructing a RasterAccessor with a source(s) that has an IndexColorModel and a destination that has a non-IndexColorModel, RasterAccessor will perform expansion of the source pixels. If the source(s) and the destination have an IndexColorModel, then RasterAccessor will assume that the operation can correctly process an IndexColorModel source and will not expand the source pixels (colormap indices) into color components. Refer to {@link JAI#KEY_REPLACE_INDEX_COLOR_MODEL} for a mechanism by which the destination image's ColorModel is set to a non-IndexColorModel to cause RasterAccessor to expand the source's IndexColorModel.
Binary data are handled as a special case. In general image data are considered to be binary when the image has a single-banded MultiPixelPackedSampleModel with one bit per pixel. This may be verified by invoking the isBinary() method. For this case the methods getBinaryDataArray() and copyBinaryDataToRaster() should be used to access and set, respectively, the binary data in packed form. If the binary data are to be accessed in expanded form, i.e., as bytes, then the usual byte methods getByteDataArray(), getByteDataArrays(), and copyDataToRaster() should be used.


        //
        // Get data for the source rectangle & the destination rectangle
        Rectangle srcRect = src.getBounds();


        RasterAccessor srcAccessor =
            new RasterAccessor(src, srcRect,
                               formatTags[0],
                               getSource(0).getColorModel());
        RasterAccessor dstAccessor =
            new RasterAccessor(dest, destRect, formatTags[1], getColorModel());


        int incr1 = 0, incr2 = 0, s_x = 0, s_y = 0;
        int srcPixelStride = srcAccessor.getPixelStride();
        int srcScanlineStride = srcAccessor.getScanlineStride();


        // Backwards map starting point of destination rectangle
        int[] pt = new int[2];
        pt[0] = destRect.x;
        pt[1] = destRect.y;
        mapPoint(pt, sMinX, sMinY, sMaxX, sMaxY, type, false);
        s_x = pt[0];
        s_y = pt[1];


        // Determine source stride along dest row (incr1) and column (incr2)
        switch (type) {
        case 0: // FLIP_VERTICAL
            incr1 = srcPixelStride;
            incr2 = -srcScanlineStride;
            break;


        case 1: // FLIP_HORIZONTAL
            incr1 = -srcPixelStride;
            incr2 = srcScanlineStride;
            break;


        case 2: // FLIP_DIAGONAL;
            incr1 = srcScanlineStride;
            incr2 = srcPixelStride;
            break;


        case 3: // FLIP_ANTIDIAGONAL
            incr1 = -srcScanlineStride;
            incr2 = -srcPixelStride;
            break;


        case 4: // ROTATE_90
            incr1 = -srcScanlineStride;
            incr2 = srcPixelStride;
            break;


        case 5: // ROTATE_180
            incr1 = -srcPixelStride;
            incr2 = -srcScanlineStride;
            break;


        case 6: // ROTATE_270
            incr1 = srcScanlineStride;
            incr2 = -srcPixelStride;
            break;
        }


        switch (dstAccessor.getDataType()) {
        case DataBuffer.TYPE_BYTE:
            byteLoop(srcAccessor,
                     destRect,
                     translateX,
                     translateY,
                     dstAccessor,
                     incr1, incr2, s_x, s_y);
            break;


        case DataBuffer.TYPE_INT:
            intLoop(srcAccessor,
                    destRect,
                    translateX,
                    translateY,
                    dstAccessor,
                    incr1, incr2, s_x, s_y);
            break;


        case DataBuffer.TYPE_SHORT:
        case DataBuffer.TYPE_USHORT:
            shortLoop(srcAccessor,
                      destRect,
                      translateX,
                      translateY,
                      dstAccessor,
                      incr1, incr2, s_x, s_y);
            break;


        case DataBuffer.TYPE_FLOAT:
            floatLoop(srcAccessor,
                      destRect,
                      translateX,
                      translateY,
                      dstAccessor,
                      incr1, incr2, s_x, s_y);
            break;


        case DataBuffer.TYPE_DOUBLE:
            doubleLoop(srcAccessor,
                       destRect,
                       translateX,
                       translateY,
                       dstAccessor,
                       incr1, incr2, s_x, s_y);
            break;
        }


        //
        // If the RasterAccessor object set up a temporary buffer for the
        // op to write to, tell the RasterAccessor to write that data
        // to the raster, that we're done with it.
        //
        if (dstAccessor.isDataCopy()) {
            dstAccessor.clampDataArrays();
            dstAccessor.copyDataToRaster();
        }
    }

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        // Retrieve format tags.
        RasterFormatTag[] formatTags = getFormatTags();


        Rectangle srcRect = mapDestRect(destRect, 0);


        RasterAccessor dst = new RasterAccessor(dest, destRect, 
                                                formatTags[1], getColorModel());
        RasterAccessor src = new RasterAccessor(sources[0], srcRect,  
                                                formatTags[0], 
                                                getSource(0).getColorModel());


        switch (dst.getDataType()) {
        case DataBuffer.TYPE_BYTE:

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        // In the first version source Rectangle is the whole source
        // image always.
        //
        // See if we can cache the source to avoid multiple rasteraccesors
        //
        RasterAccessor srcAccessor =
            new RasterAccessor(source,
                               srcRect,
                               formatTags[0],
                               getSourceImage(0).getColorModel());
        RasterAccessor dstAccessor =
            new RasterAccessor(dest,
                               destRect,
                               formatTags[1],
                               getColorModel());


        switch (dstAccessor.getDataType()) {
        case DataBuffer.TYPE_BYTE:
            byteLoop(srcAccessor,
                     destRect,
                     srcRectX,
                     srcRectY,
                     dstAccessor);
            break;


        case DataBuffer.TYPE_INT:
            intLoop(srcAccessor,
                    destRect,
                    srcRectX,
                    srcRectY,
                    dstAccessor);
            break;


        case DataBuffer.TYPE_SHORT:
            shortLoop(srcAccessor,
                      destRect,
                      srcRectX,
                      srcRectY,
                      dstAccessor);
            break;


        case DataBuffer.TYPE_USHORT:
            ushortLoop(srcAccessor,
                       destRect,
                       srcRectX,
                       srcRectY,
                       dstAccessor);
      break;


        case DataBuffer.TYPE_FLOAT:
            floatLoop(srcAccessor,
                      destRect,
                      srcRectX,
                      srcRectY,
                      dstAccessor);
      break;


        case DataBuffer.TYPE_DOUBLE:
            doubleLoop(srcAccessor,
                       destRect,
                       srcRectX,
                       srcRectY,
                       dstAccessor);
      break;
  }


        // If the RasterAccessor object set up a temporary buffer for the
        // op to write to, tell the RasterAccessor to write that data
        // to the raster, that we're done with it.
        if (dstAccessor.isDataCopy()) {
            dstAccessor.clampDataArrays();
            dstAccessor.copyDataToRaster();
        }
    }

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                               Rectangle destRect) {
        // Retrieve format tags.
        RasterFormatTag[] formatTags = getFormatTags();


        /* For PointOpImage, srcRect = destRect. */
        RasterAccessor s1 = new RasterAccessor(sources[0], destRect,  
                                               formatTags[0], 
                                               getSource(0).getColorModel());
        RasterAccessor s2 = new RasterAccessor(sources[1], destRect,  
                                               formatTags[1], 
                                               getSource(1).getColorModel());
        RasterAccessor d = new RasterAccessor(dest, destRect,  
                                              formatTags[2], getColorModel());


        if(d.isBinary()) {
            byte[] src1Bits = s1.getBinaryDataArray();
            byte[] src2Bits = s2.getBinaryDataArray();
            byte[] dstBits = d.getBinaryDataArray();


            int length = dstBits.length;
            for(int i = 0; i < length; i++) {
                dstBits[i] = (byte)(src1Bits[i] ^ src2Bits[i]);
            }


            d.copyBinaryDataToRaster();


      return;
        }


        int src1LineStride = s1.getScanlineStride();
        int src1PixelStride = s1.getPixelStride();
        int[] src1BandOffsets = s1.getBandOffsets();


        int src2LineStride = s2.getScanlineStride();
        int src2PixelStride = s2.getPixelStride();
        int[] src2BandOffsets = s2.getBandOffsets();


        int dstNumBands = d.getNumBands();
        int dstWidth = d.getWidth();
        int dstHeight = d.getHeight();
        int dstLineStride = d.getScanlineStride();
        int dstPixelStride = d.getPixelStride();
        int[] dstBandOffsets = d.getBandOffsets();


        switch (d.getDataType()) {
      
        case DataBuffer.TYPE_BYTE:
            byteLoop(dstNumBands, dstWidth, dstHeight,
                     src1LineStride, src1PixelStride,
                     src1BandOffsets, s1.getByteDataArrays(),
                     src2LineStride, src2PixelStride,
                     src2BandOffsets, s2.getByteDataArrays(),
                     dstLineStride, dstPixelStride,
                     dstBandOffsets, d.getByteDataArrays());
            break;
      
        case DataBuffer.TYPE_USHORT:
        case DataBuffer.TYPE_SHORT:
            shortLoop(dstNumBands, dstWidth, dstHeight,
          src1LineStride, src1PixelStride,
          src1BandOffsets, s1.getShortDataArrays(),
          src2LineStride, src2PixelStride,
          src2BandOffsets, s2.getShortDataArrays(),
          dstLineStride, dstPixelStride,
          dstBandOffsets, d.getShortDataArrays());
            break;
      
        case DataBuffer.TYPE_INT:
            intLoop(dstNumBands, dstWidth, dstHeight,
                    src1LineStride, src1PixelStride,
                    src1BandOffsets, s1.getIntDataArrays(),
                    src2LineStride, src2PixelStride,
                    src2BandOffsets, s2.getIntDataArrays(),
                    dstLineStride, dstPixelStride,
                    dstBandOffsets, d.getIntDataArrays());
            break;
        }
  
        d.copyDataToRaster();
    }

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        Raster source = sources[0];
        Rectangle srcRect = mapDestRect(destRect, 0);
 
 
        RasterAccessor srcAccessor =
            new RasterAccessor(source, srcRect, 
                               formatTags[0], getSourceImage(0).getColorModel());
        RasterAccessor dstAccessor =
            new RasterAccessor(dest, destRect, 
                               formatTags[1], getColorModel());
 
        switch (dstAccessor.getDataType()) {
        case DataBuffer.TYPE_BYTE:
            byteLoop(srcAccessor, dstAccessor);
      break;
        case DataBuffer.TYPE_INT:
            intLoop(srcAccessor, dstAccessor);
            break;
        case DataBuffer.TYPE_SHORT:
            shortLoop(srcAccessor, dstAccessor);
            break;
        case DataBuffer.TYPE_USHORT:
            ushortLoop(srcAccessor, dstAccessor);
            break;
        case DataBuffer.TYPE_FLOAT:
            floatLoop(srcAccessor, dstAccessor);
            break;
        case DataBuffer.TYPE_DOUBLE:
            doubleLoop(srcAccessor, dstAccessor);
            break;


        default:
        }
 
        // If the RasterAccessor object set up a temporary buffer for the
        // op to write to, tell the RasterAccessor to write that data
        // to the raster no that we're done with it.
        if (dstAccessor.isDataCopy()) {
            dstAccessor.clampDataArrays();
            dstAccessor.copyDataToRaster();
        }
    }

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                               Rectangle destRect) {
        // Retrieve format tags.
        RasterFormatTag[] formatTags = getFormatTags();


        /* For PointOpImage, srcRect = destRect. */
        RasterAccessor s1 = new RasterAccessor(sources[0], destRect,  
                                               formatTags[0], 
                                               getSource(0).getColorModel());
        RasterAccessor s2 = new RasterAccessor(sources[1], destRect,  
                                               formatTags[1], 
                                               getSource(1).getColorModel());
        RasterAccessor d = new RasterAccessor(dest, destRect,  
                                              formatTags[2], getColorModel());


        if(d.isBinary()) {
            byte[] src1Bits = s1.getBinaryDataArray();
            byte[] src2Bits = s2.getBinaryDataArray();
            byte[] dstBits = d.getBinaryDataArray();


            int length = dstBits.length;
            for(int i = 0; i < length; i++) {
                // "Multiply" is equivalent to "And".
                dstBits[i] = (byte)(src1Bits[i] & src2Bits[i]);
            }


            d.copyBinaryDataToRaster();


      return;
        }


        int src1LineStride = s1.getScanlineStride();
        int src1PixelStride = s1.getPixelStride();
        int[] src1BandOffsets = s1.getBandOffsets();


        int src2LineStride = s2.getScanlineStride();
        int src2PixelStride = s2.getPixelStride();
        int[] src2BandOffsets = s2.getBandOffsets();


        int dstNumBands = d.getNumBands();
        int dstWidth = d.getWidth();
        int dstHeight = d.getHeight();
        int dstLineStride = d.getScanlineStride();
        int dstPixelStride = d.getPixelStride();
        int[] dstBandOffsets = d.getBandOffsets();


        switch (d.getDataType()) {
      
        case DataBuffer.TYPE_BYTE:
            byteLoop(dstNumBands, dstWidth, dstHeight,
                     src1LineStride, src1PixelStride,
                     src1BandOffsets, s1.getByteDataArrays(),
                     src2LineStride, src2PixelStride,
                     src2BandOffsets, s2.getByteDataArrays(),
                     dstLineStride, dstPixelStride,
                     dstBandOffsets, d.getByteDataArrays());
            break;
      
        case DataBuffer.TYPE_USHORT:
            ushortLoop(dstNumBands, dstWidth, dstHeight,
                       src1LineStride, src1PixelStride,
                       src1BandOffsets, s1.getShortDataArrays(),
                       src2LineStride, src2PixelStride,
                       src2BandOffsets, s2.getShortDataArrays(),
                       dstLineStride, dstPixelStride,
                       dstBandOffsets, d.getShortDataArrays());
            break;
      
        case DataBuffer.TYPE_SHORT:
            shortLoop(dstNumBands, dstWidth, dstHeight,
                      src1LineStride, src1PixelStride,
                      src1BandOffsets, s1.getShortDataArrays(),
                      src2LineStride, src2PixelStride,
                      src2BandOffsets, s2.getShortDataArrays(),
                      dstLineStride, dstPixelStride,
                      dstBandOffsets, d.getShortDataArrays());
            break;
      
        case DataBuffer.TYPE_INT:
            intLoop(dstNumBands, dstWidth, dstHeight,
                    src1LineStride, src1PixelStride,
                    src1BandOffsets, s1.getIntDataArrays(),
                    src2LineStride, src2PixelStride,
                    src2BandOffsets, s2.getIntDataArrays(),
                    dstLineStride, dstPixelStride,
                    dstBandOffsets, d.getIntDataArrays());
            break;
      
        case DataBuffer.TYPE_FLOAT:
            floatLoop(dstNumBands, dstWidth, dstHeight,
                      src1LineStride, src1PixelStride,
                      src1BandOffsets, s1.getFloatDataArrays(),
                      src2LineStride, src2PixelStride,
                      src2BandOffsets, s2.getFloatDataArrays(),
                      dstLineStride, dstPixelStride,
                      dstBandOffsets, d.getFloatDataArrays());
            break;


        case DataBuffer.TYPE_DOUBLE:
            doubleLoop(dstNumBands, dstWidth, dstHeight,
                       src1LineStride, src1PixelStride,
                       src1BandOffsets, s1.getDoubleDataArrays(),
                       src2LineStride, src2PixelStride,
                       src2BandOffsets, s2.getDoubleDataArrays(),
                       dstLineStride, dstPixelStride,
                       dstBandOffsets, d.getDoubleDataArrays());
            break;
        }


        if (d.needsClamping()) {
            d.clampDataArrays();
        }
  
        d.copyDataToRaster();
    }

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                               WritableRaster dest,
                               Rectangle destRect) {
        // Retrieve format tags.
        RasterFormatTag[] formatTags = getFormatTags();


        RasterAccessor s = new RasterAccessor(sources[0], destRect,  
                                              formatTags[0], 
                                              getSourceImage(0).getColorModel());
        RasterAccessor d = new RasterAccessor(dest, destRect,  
                                              formatTags[1], getColorModel());


        switch (d.getDataType()) {
        case DataBuffer.TYPE_BYTE:
            computeRectByte(s, d);
            break;
        case DataBuffer.TYPE_USHORT:
            computeRectUShort(s, d);
            break;
        case DataBuffer.TYPE_SHORT:
            computeRectShort(s, d);
            break;
        case DataBuffer.TYPE_INT:
            computeRectInt(s, d);
            break;
        case DataBuffer.TYPE_FLOAT:
            computeRectFloat(s, d);
            break;
        case DataBuffer.TYPE_DOUBLE:
            computeRectDouble(s, d);
            break;
        }


        if (d.isDataCopy()) {
            d.clampDataArrays();
            d.copyDataToRaster();
        }
    }

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                               Rectangle destRect) {
        // Retrieve format tags.
        RasterFormatTag[] formatTags = getFormatTags();


        /* For PointOpImage, srcRect = destRect. */
        RasterAccessor s1 = new RasterAccessor(sources[0], destRect,  
                                               formatTags[0], 
                                               getSource(0).getColorModel());
        RasterAccessor s2 = new RasterAccessor(sources[1], destRect,  
                                               formatTags[1], 
                                               getSource(1).getColorModel());
        RasterAccessor d = new RasterAccessor(dest, destRect,  
                                              formatTags[2], getColorModel());
 


        if(d.isBinary()) {
            byte[] src1Bits = s1.getBinaryDataArray();
            byte[] src2Bits = s2.getBinaryDataArray();
            byte[] dstBits = d.getBinaryDataArray();


            int length = dstBits.length;
            for(int i = 0; i < length; i++) {
                dstBits[i] = (byte)(src1Bits[i] | src2Bits[i]);
            }


            d.copyBinaryDataToRaster();


            return;
        }
        int src1LineStride = s1.getScanlineStride();
        int src1PixelStride = s1.getPixelStride();
        int[] src1BandOffsets = s1.getBandOffsets();


        int src2LineStride = s2.getScanlineStride();
        int src2PixelStride = s2.getPixelStride();
        int[] src2BandOffsets = s2.getBandOffsets();


        int dstNumBands = d.getNumBands();
        int dstWidth = d.getWidth();
        int dstHeight = d.getHeight();
        int dstLineStride = d.getScanlineStride();
        int dstPixelStride = d.getPixelStride();
        int[] dstBandOffsets = d.getBandOffsets();


        switch (d.getDataType()) {
      
        case DataBuffer.TYPE_BYTE:
            byteLoop(dstNumBands, dstWidth, dstHeight,
                     src1LineStride, src1PixelStride,
                     src1BandOffsets, s1.getByteDataArrays(),
                     src2LineStride, src2PixelStride,
                     src2BandOffsets, s2.getByteDataArrays(),
                     dstLineStride, dstPixelStride,
                     dstBandOffsets, d.getByteDataArrays());
            break;
      
        case DataBuffer.TYPE_USHORT:
        case DataBuffer.TYPE_SHORT:
            shortLoop(dstNumBands, dstWidth, dstHeight,
          src1LineStride, src1PixelStride,
          src1BandOffsets, s1.getShortDataArrays(),
          src2LineStride, src2PixelStride,
          src2BandOffsets, s2.getShortDataArrays(),
          dstLineStride, dstPixelStride,
          dstBandOffsets, d.getShortDataArrays());
            break;
      
        case DataBuffer.TYPE_INT:
            intLoop(dstNumBands, dstWidth, dstHeight,
                    src1LineStride, src1PixelStride,
                    src1BandOffsets, s1.getIntDataArrays(),
                    src2LineStride, src2PixelStride,
                    src2BandOffsets, s2.getIntDataArrays(),
                    dstLineStride, dstPixelStride,
                    dstBandOffsets, d.getIntDataArrays());
            break;
        }
  
        d.copyDataToRaster();
    }

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        RasterFormatTag[] formatTags = getFormatTags();


        Raster source = sources[0];
        Rectangle srcRect = mapDestRect(destRect, 0);


        RasterAccessor srcAccessor = 
            new RasterAccessor(source,srcRect,
                               formatTags[0], 
                               getSourceImage(0).getColorModel());


        RasterAccessor dstAccessor = 
            new RasterAccessor(dest,destRect, 
                               formatTags[1], getColorModel());


        switch (dstAccessor.getDataType()) {
        case DataBuffer.TYPE_SHORT:
            shortLoop(srcAccessor,dstAccessor);
            break;
        case DataBuffer.TYPE_INT:
            intLoop(srcAccessor,dstAccessor);
            break;
        case DataBuffer.TYPE_FLOAT:
            floatLoop(srcAccessor,dstAccessor);
            break;
        case DataBuffer.TYPE_DOUBLE:
            doubleLoop(srcAccessor,dstAccessor);
            break;
        case DataBuffer.TYPE_BYTE:
        case DataBuffer.TYPE_USHORT:
        default:
            throw new RuntimeException(JaiI18N.getString("ConjugateOpImage0"));
        }


        // If the RasterAccessor object set up a temporary buffer for the 
        // op to write to, tell the RasterAccessor to write that data
        // to the raster no that we're done with it.
        if (dstAccessor.isDataCopy()) {
            dstAccessor.clampDataArrays();
            dstAccessor.copyDataToRaster();
        }
    }

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                               WritableRaster dest,
                               Rectangle destRect) {
        // Retrieve format tags.
        RasterFormatTag[] formatTags = getFormatTags();


        RasterAccessor src = new RasterAccessor(sources[0], destRect, 
                                                formatTags[0],
                                                getSourceImage(0).getColorModel());
        RasterAccessor dst = new RasterAccessor(dest, destRect, 
                                                formatTags[1],
                                                getColorModel());


        if(dst.isBinary()) {
            byte[] dstBits = dst.getBinaryDataArray();
            System.arraycopy(src.getBinaryDataArray(), 0,
                             dstBits, 0, dstBits.length);


            dst.copyBinaryDataToRaster();


      return;
        }


        /* Find out what kind of data type is used to store the image */
        switch ( dst.getDataType() ) {
        case DataBuffer.TYPE_BYTE:
            byteAbsolute(dst.getNumBands(),
                         dst.getWidth(),
                         dst.getHeight(),
                         src.getScanlineStride(),
                         src.getPixelStride(),
                         src.getBandOffsets(),
                         src.getByteDataArrays(),
                         dst.getScanlineStride(),
                         dst.getPixelStride(),
                         dst.getBandOffsets(),
                         dst.getByteDataArrays());
            break;


        case DataBuffer.TYPE_SHORT:
            shortAbsolute(dst.getNumBands(),
                          dst.getWidth(),
                          dst.getHeight(),
                          src.getScanlineStride(),
                          src.getPixelStride(),
                          src.getBandOffsets(),
                          src.getShortDataArrays(),
                          dst.getScanlineStride(),
                          dst.getPixelStride(),
                          dst.getBandOffsets(),
                          dst.getShortDataArrays());
            break;


        case DataBuffer.TYPE_USHORT:
            ushortAbsolute(dst.getNumBands(),
                           dst.getWidth(),
                           dst.getHeight(),
                           src.getScanlineStride(),
                           src.getPixelStride(),
                           src.getBandOffsets(),
                           src.getShortDataArrays(),
                           dst.getScanlineStride(),
                           dst.getPixelStride(),
                           dst.getBandOffsets(),
                           dst.getShortDataArrays());
            break;


        case DataBuffer.TYPE_INT:
            intAbsolute(dst.getNumBands(),
                        dst.getWidth(),
                        dst.getHeight(),
                        src.getScanlineStride(),
                        src.getPixelStride(),
                        src.getBandOffsets(),
                        src.getIntDataArrays(),
                        dst.getScanlineStride(),
                        dst.getPixelStride(),
                        dst.getBandOffsets(),
                        dst.getIntDataArrays());
            break;


        case DataBuffer.TYPE_FLOAT:
            floatAbsolute(dst.getNumBands(),
                          dst.getWidth(),
                          dst.getHeight(),
                          src.getScanlineStride(),
                          src.getPixelStride(),
                          src.getBandOffsets(),
                          src.getFloatDataArrays(),
                          dst.getScanlineStride(),
                          dst.getPixelStride(),
                          dst.getBandOffsets(),
                          dst.getFloatDataArrays());
            break;


        case DataBuffer.TYPE_DOUBLE:
            doubleAbsolute(dst.getNumBands(),
                           dst.getWidth(),
                           dst.getHeight(),
                           src.getScanlineStride(),
                           src.getPixelStride(),
                           src.getBandOffsets(),
                           src.getDoubleDataArrays(),
                           dst.getScanlineStride(),
                           dst.getPixelStride(),
                           dst.getBandOffsets(),
                           dst.getDoubleDataArrays());
            break;
        }
        if (dst.needsClamping()) {
            dst.clampDataArrays();
        }
        dst.copyDataToRaster();
    }

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com.alibaba.simpleimage.jai.scale.LanczosScaleOp

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