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.


        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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        } catch (IOException ioe) {
            throw new RuntimeException("IOException: " + ioe); //$NON-NLS-1$
        }


        // Create the data buffer.
        DataBuffer buffer = new DataBufferByte(data, size);


        // Create the tile.
        Point origin = new Point(tileXToX(0), tileYToY(0));
        tile = Raster.createWritableRaster(sampleModel, buffer, origin);

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                }
            }
        }else if(model == cm && model.getTransferType() == DataBuffer.TYPE_BYTE &&
                raster.getNumDataElements() == 1){


            DataBufferByte dbb = (DataBufferByte)raster.getDataBuffer();
            byte data[] = dbb.getData();
            int scanline = raster.getWidth();
            int rof = dbb.getOffset() + y * scanline + x;
            for(int lineOff = off, line = y; line < y + h;
                line++, lineOff += scansize, rof += scanline){
                System.arraycopy(pixels, lineOff, data, rof, w);
            }
        }else{

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                    bits, false, false, 
                    Transparency.OPAQUE, 
                    DataBuffer.TYPE_BYTE);


            wr = Raster.createInterleavedRaster(
                    new DataBufferByte(buffer, buffer.length),
                    b.width, b.height, b.stride, 3, offsets, null);


        } else if ((b.bits == 16 || b.bits == 15)
                && b.buffer instanceof short[]) {
            int masks[] = { b.rMask, b.gMask, b.bMask };

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    gt.translate (0, icon.getHeight());
    gt.scale (1, -1d);
    g.transform (gt);
    g.drawImage (icon, null, null);
    
    DataBufferByte destBuf =
        (DataBufferByte)raster.getDataBuffer();
  
    ByteBuffer result = BufferUtil.newByteBuffer(destBuf.getData().length);
    byte rgba[] = destBuf.getData();
    
    result.put(rgba);
    result.rewind();
    
    return result;

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        graphics.setPaint(Color.white);
        graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height));
        slide.draw(graphics);             
        
        BufferedImage imgExpected = ImageIO.read(slTests.getFile("bug55902-mixedChars.png"));
        DataBufferByte expectedDB = (DataBufferByte)imgExpected.getRaster().getDataBuffer();
        DataBufferByte actualDB = (DataBufferByte)imgActual.getRaster().getDataBuffer();
        byte[] expectedData = expectedDB.getData(0);
        byte[] actualData = actualDB.getData(0);
        
        // allow to find out what the actual difference is in CI where this fails currently
        if(!Arrays.equals(expectedData, actualData)) {
            ImageIO.write(imgActual, "PNG", TempFile.createTempFile("TestFontRendering", ".png"));
        }

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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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        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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        // 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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