Examples of java.awt.image.DataBufferByte

java.awt.image.DataBufferByte
This class extends DataBuffer and stores data internally as bytes. Values stored in the byte array(s) of this DataBuffer are treated as unsigned values.

  public void test(TestHarness harness)      
  {
    SinglePixelPackedSampleModel m1 = new SinglePixelPackedSampleModel(
      DataBuffer.TYPE_BYTE, 2, 2, new int[] { 0xF0, 0x0F }
    );
    DataBufferByte db = new DataBufferByte(new byte[] { (byte) 0x12, (byte) 0x34, (byte) 0xAB, (byte) 0xCD }, 4);


    // check regular fetch
    int[] samples = m1.getSamples(0, 0, 1, 2, 1, (int[]) null, db);
    harness.check(samples[0], 0x02);  // 1
    harness.check(samples[1], 0x0B);  // 2

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            {
                // BGR to RGB
                raster = fromBGRtoRGB(raster);
            }


            DataBufferByte dataBuffer = (DataBufferByte)raster.getDataBuffer();
            decoded.write(dataBuffer.getData());
        }
        finally
        {
            if (iis != null)
            {

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        {
            byte[] map = new byte[] { (byte) 0x00, (byte) 0xFF };
            colorModel = new IndexColorModel(1, map.length, map, map, map, Transparency.OPAQUE);
        }
        WritableRaster raster = colorModel.createCompatibleWritableRaster(cols, rows);
        DataBufferByte buffer = (DataBufferByte) raster.getDataBuffer();
        bufferData = buffer.getData();
        IOUtils.populateBuffer(stream.getUnfilteredStream(), bufferData);
        BufferedImage image = new BufferedImage(colorModel, raster, false, null);
        if (!blackIsOne)
        {
            // Inverting the bitmap

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        // create a RGB color model
        ColorModel cm = new ComponentColorModel(cs, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
        // create the target raster
        WritableRaster writeableRaster = cm.createCompatibleWritableRaster(width, height);
        // get the data buffer of the raster
        DataBufferByte buffer = (DataBufferByte)writeableRaster.getDataBuffer();
        byte[] bufferData = buffer.getData();
        // copy all the converted data to the raster buffer
        System.arraycopy( rgb, 0,bufferData, 0,rgb.length );
        // create an image using the converted color values
        return new BufferedImage(cm, writeableRaster, true, null);
    }

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                }
            }


            LOG.debug("ColorModel: " + cm.toString());
            WritableRaster raster = cm.createCompatibleWritableRaster( width, height );
            DataBufferByte buffer = (DataBufferByte)raster.getDataBuffer();
            byte[] bufferData = buffer.getData();


            System.arraycopy( array, 0,bufferData, 0,
                    (array.length<bufferData.length?array.length: bufferData.length) );
            image = new BufferedImage(cm, raster, false, null);

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        DataBuffer dataBuffer;
        WritableRaster ras = null;
        Point origin = new Point(0, 0);
        if ((bitDepth < 8) && (bands == 1)) {
            dataBuffer = new DataBufferByte(height*scanlineStride);
            ras = Raster.createPackedRaster(dataBuffer,
                                            width, height,
                                            bitDepth,
                                            origin);
        } else if (bitDepth <= 8) {
            dataBuffer = new DataBufferByte(height*scanlineStride);
           ras = Raster.createInterleavedRaster(dataBuffer,
                                                 width, height,
                                                 scanlineStride,
                                                 bands,
                                                 bandOffsets[bands],

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        DataBuffer dataBuffer;
        WritableRaster ras = null;
        Point origin = new Point(0, 0);
        if ((bitDepth < 8) && (bands == 1)) {
            dataBuffer = new DataBufferByte(height*scanlineStride);
            ras = Raster.createPackedRaster(dataBuffer,
                                            width, height,
                                            bitDepth,
                                            origin);
        } else if (bitDepth <= 8) {
            dataBuffer = new DataBufferByte(height*scanlineStride);
           ras = Raster.createInterleavedRaster(dataBuffer,
                                                 width, height,
                                                 scanlineStride,
                                                 bands,
                                                 bandOffsets[bands],

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        ComponentSampleModel csm;
        csm = (ComponentSampleModel)r.getSampleModel();
        final int alpScanStride = csm.getScanlineStride();


        DataBufferByte alpDB   = (DataBufferByte)r.getDataBuffer();
        final int      alpBase 
            = (alpDB.getOffset() + 
               csm.getOffset(rgn.x-r.getSampleModelTranslateX(), 
                             rgn.y-r.getSampleModelTranslateY()));


            
          // Access the pixel data array
        final byte alpPixels[] = alpDB.getBankData()[0];


        SinglePixelPackedSampleModel sppsm;
        sppsm = (SinglePixelPackedSampleModel)wr.getSampleModel();
        final int srcScanStride = sppsm.getScanlineStride();

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        int banks = srcDB.getNumBanks();
        int [] offsets = srcDB.getOffsets();
        for (int b=0; b< banks; b++) {
            switch (srcDB.getDataType()) {
            case DataBuffer.TYPE_BYTE: {
                DataBufferByte srcDBT = (DataBufferByte)srcDB;
                DataBufferByte retDBT = (DataBufferByte)retDB;
                System.arraycopy(srcDBT.getData(b), offsets[b],
                                 retDBT.getData(b), offsets[b], len);
            }
            case DataBuffer.TYPE_INT: {
                DataBufferInt srcDBT = (DataBufferInt)srcDB;
                DataBufferInt retDBT = (DataBufferInt)retDB;
                System.arraycopy(srcDBT.getData(b), offsets[b],
                                 retDBT.getData(b), offsets[b], len);
            }
            case DataBuffer.TYPE_SHORT: {
                DataBufferShort srcDBT = (DataBufferShort)srcDB;
                DataBufferShort retDBT = (DataBufferShort)retDB;
                System.arraycopy(srcDBT.getData(b), offsets[b],
                                 retDBT.getData(b), offsets[b], len);
            }
            case DataBuffer.TYPE_USHORT: {
                DataBufferUShort srcDBT = (DataBufferUShort)srcDB;
                DataBufferUShort retDBT = (DataBufferUShort)retDB;
                System.arraycopy(srcDBT.getData(b), offsets[b],
                                 retDBT.getData(b), offsets[b], len);
            }
            }
        }


        return ret;

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        final int scanStride = csm.getScanlineStride();
        final int pixStride  = csm.getPixelStride();
        final int [] bandOff = csm.getBandOffsets();


        DataBufferByte db = (DataBufferByte)wr.getDataBuffer();
        final int base
            = (db.getOffset() +
               csm.getOffset(wr.getMinX()-wr.getSampleModelTranslateX(),
                             wr.getMinY()-wr.getSampleModelTranslateY()));




        int a=0;
        int aOff = bandOff[bandOff.length-1];
        int bands = bandOff.length-1;
        int b, i;
        // Access the pixel data array
        final byte pixels[] = db.getBankData()[0];
        for (int y=0; y<wr.getHeight(); y++) {
            int sp = base + y*scanStride;
            final int end = sp + width*pixStride;
            while (sp < end) {
              a = pixels[sp+aOff]&0xFF;

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