Examples of java.awt.image.DataBuffer

java.awt.image.DataBuffer
This class exists to wrap one or more data arrays. Each data array in the DataBuffer is referred to as a bank. Accessor methods for getting and setting elements of the DataBuffer's banks exist with and without a bank specifier. The methods without a bank specifier use the default 0th bank. The DataBuffer can optionally take an offset per bank, so that data in an existing array can be used even if the interesting data doesn't start at array location zero. Getting or setting the 0th element of a bank, uses the (0+offset)th element of the array. The size field specifies how much of the data array is available for use. Size + offset for a given bank should never be greater than the length of the associated data array. The data type of a data buffer indicates the type of the data array(s) and may also indicate additional semantics, e.g. storing unsigned 8-bit data in elements of a byte array. The data type may be TYPE_UNDEFINED or one of the types defined below. Other types may be added in the future. Generally, an object of class DataBuffer will be cast down to one of its data type specific subclasses to access data type specific methods for improved performance. Currently, the Java 2D(tm) API image classes use TYPE_BYTE, TYPE_USHORT, TYPE_INT, TYPE_SHORT, TYPE_FLOAT, and TYPE_DOUBLE DataBuffers to store image data. @see java.awt.image.Raster @see java.awt.image.SampleModel

                params.getWidth(),
                params.getHeight(),
                params.getBitsPerComponent(),
                new Point(0,0) );
                */
        DataBuffer rasterBuffer = raster.getDataBuffer(); 
        if( rasterBuffer instanceof DataBufferByte )
        {
            DataBufferByte byteBuffer = (DataBufferByte)rasterBuffer;
            byte[] data = byteBuffer.getData();
            System.arraycopy( finalData, 0, data, 0, data.length );

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            boolean flip = origin() == IPL_ORIGIN_BL; // need to add support for ROI..


            ByteBuffer in  = getByteBuffer(roi == null ? 0 : roi.y*widthStep() + roi.x*nChannels());
            SampleModel sm = image.getSampleModel();
            Raster r       = image.getRaster();
            DataBuffer out = r.getDataBuffer();
            int x = -r.getSampleModelTranslateX();
            int y = -r.getSampleModelTranslateY();
            int step = sm.getWidth()*sm.getNumBands();
            int channels = sm.getNumBands();
            if (sm instanceof ComponentSampleModel) {

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            origin(IPL_ORIGIN_TL);


            ByteBuffer out = getByteBuffer(roi == null ? 0 : roi.y*widthStep() + roi.x);
            SampleModel sm = image.getSampleModel();
            Raster r       = image.getRaster();
            DataBuffer in  = r.getDataBuffer();
            int x = r.getSampleModelTranslateX();
            int y = r.getSampleModelTranslateY();
            int step = sm.getWidth()*sm.getNumBands();
            if (sm instanceof ComponentSampleModel) {
                step = ((ComponentSampleModel)sm).getScanlineStride();

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      * Serialize the <code>DataBufferState</code>.
      *
      * @param out The <code>ObjectOutputStream</code>.
      */
    private void writeObject(ObjectOutputStream out) throws IOException {
        DataBuffer dataBuffer = (DataBuffer)theObject;


        // Write serialized form to the stream.
        int dataType = dataBuffer.getDataType();
        out.writeInt(dataType);
        out.writeObject(dataBuffer.getOffsets());
        out.writeInt(dataBuffer.getSize());
        Object dataArray = null;
        switch (dataType) {
        case DataBuffer.TYPE_BYTE:
            dataArray = ((DataBufferByte)dataBuffer).getBankData();
            break;

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      *
      * @param out The <code>ObjectInputStream</code>.
      */
    private void readObject(ObjectInputStream in)
        throws IOException, ClassNotFoundException {
        DataBuffer dataBuffer = null;


        // Read serialized form from the stream.
        int dataType = -1;
        int[] offsets = null;
        int size = -1;

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            break;
        default:
            throw new IllegalArgumentException("dataType == "+dataType+"!");
        }


        DataBuffer dataBuffer = null;
        try {
            Constructor constructor = dbClass.getConstructor(paramTypes);
            dataBuffer = (DataBuffer)constructor.newInstance(paramValues);
        } catch(Exception e) {
            throw new RuntimeException(JaiI18N.getString("DataBufferUtils1"));

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        if (bandOffsets == null) {
            throw new IllegalArgumentException(JaiI18N.getString("RasterFactory4"));
        }


  DataBuffer d;
        int bands = bandOffsets.length;


        int maxBandOff = bandOffsets[0];
        for (int i=1; i < bands; i++) {
            if (bandOffsets[i] > maxBandOff) {

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                                                    int width, int height,
                                                    int scanlineStride,
                                                    int bankIndices[],
                                                    int bandOffsets[],
                                                    Point location) {
  DataBuffer d;
        int bands = bandOffsets.length;


        if (bankIndices == null) {
            throw new IllegalArgumentException(JaiI18N.getString("RasterFactory1"));
        }

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    private WritableRaster createRaster(int width, int height, int bands,
                                        int scanlineStride,
                                        int bitDepth) {


        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,

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        // Create a 1-row tall Raster to hold the data
        WritableRaster passRow =
            createRaster(passWidth, 1, inputBands,
                         eltsPerRow,
                         bitDepth);
        DataBuffer dataBuffer = passRow.getDataBuffer();
        int type = dataBuffer.getDataType();
        byte[] byteData = null;
        short[] shortData = null;
        if (type == DataBuffer.TYPE_BYTE) {
            byteData = ((DataBufferByte)dataBuffer).getData();
        } else {

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