Java Code Examples for java.awt.image.Raster#createInterleavedRaster()

/**
 * Returns the custom buffered image, which mostly identical to
 * BufferedImage.(w,h,TYPE_3BYTE_BGR), but uses the bigger scanlineStride.
 * This means that the raster will have gaps, between the rows.
 */
private static BufferedImage makeCustomManagedBI() {
    int w = 511, h = 255;
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    int[] nBits = {8, 8, 8};
    int[] bOffs = {2, 1, 0};
    ColorModel colorModel = new ComponentColorModel(cs, nBits, false, false,
                                                    Transparency.OPAQUE,
                                                    DataBuffer.TYPE_BYTE);
    WritableRaster raster =
            Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, w, h,
                                           w * 3 + 2, 3, bOffs, null);
    BufferedImage bi = new BufferedImage(colorModel, raster, true, null);
    SunWritableRaster.makeTrackable(raster.getDataBuffer());
    SunWritableRaster.markDirty(bi);
    return bi;
}
 

private BufferedImage create3ByteImage(int[] nBits, int[] bOffs) {
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    ColorModel colorModel =
        new ComponentColorModel(cs, nBits,
                                false, false,
                                Transparency.OPAQUE,
                                DataBuffer.TYPE_BYTE);
    WritableRaster raster =
        Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                       w, h,
                                       w*3, 3,
                                       bOffs, null);
    return new BufferedImage(colorModel, raster, false, null);
}
 

/**
 * Creates a WritableRaster with the specified width and height, that
 * has a data layout (SampleModel) compatible with this ColorModel.
 * @see WritableRaster
 * @see SampleModel
 */
public WritableRaster createCompatibleWritableRaster (int w, int h) {
    int[] bOffs = {2, 1, 0};
    return Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                          w, h, w*3, 3,
                                          bOffs, null);
}
 

/**
 * Returns the custom buffered image, which mostly identical to
 * BufferedImage.(w,h,TYPE_3BYTE_BGR), but uses the bigger scanlineStride.
 * This means that the raster will have gaps, between the rows.
 */
private static BufferedImage makeCustomUnmanagedBI() {
    int w = 511, h = 255;
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    int[] nBits = {8, 8, 8};
    int[] bOffs = {2, 1, 0};
    ColorModel colorModel = new ComponentColorModel(cs, nBits, false, false,
                                                    Transparency.OPAQUE,
                                                    DataBuffer.TYPE_BYTE);
    WritableRaster raster =
            Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, w, h,
                                           w * 3 + 2, 3, bOffs, null);
    return new BufferedImage(colorModel, raster, true, null);
}
 

/**
 * Returns the custom buffered image, which mostly identical to
 * BufferedImage.(w,h,TYPE_3BYTE_BGR), but uses the bigger scanlineStride.
 * This means that the raster will have gaps, between the rows.
 */
private static BufferedImage makeCustomUnmanagedBI() {
    int w = 511, h = 255;
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    int[] nBits = {8, 8, 8};
    int[] bOffs = {2, 1, 0};
    ColorModel colorModel = new ComponentColorModel(cs, nBits, false, false,
                                                    Transparency.OPAQUE,
                                                    DataBuffer.TYPE_BYTE);
    WritableRaster raster =
            Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, w, h,
                                           w * 3 + 2, 3, bOffs, null);
    return new BufferedImage(colorModel, raster, true, null);
}
 

BufferedImage getThumbnail(ImageInputStream iis,
                           JPEGImageReader reader)
    throws IOException {
    iis.mark();
    iis.seek(streamPos);
    DataBufferByte buffer = new DataBufferByte(getLength());
    readByteBuffer(iis,
                   buffer.getData(),
                   reader,
                   1.0F,
                   0.0F);
    iis.reset();

    WritableRaster raster =
        Raster.createInterleavedRaster(buffer,
                                       thumbWidth,
                                       thumbHeight,
                                       thumbWidth*3,
                                       3,
                                       new int [] {0, 1, 2},
                                       null);
    ColorModel cm = new ComponentColorModel(JPEG.JCS.sRGB,
                                            false,
                                            false,
                                            ColorModel.OPAQUE,
                                            DataBuffer.TYPE_BYTE);
    return new BufferedImage(cm,
                             raster,
                             false,
                             null);
}
 

/**
 * Creates a WritableRaster with the specified width and height, that
 * has a data layout (SampleModel) compatible with this ColorModel.
 * @see WritableRaster
 * @see SampleModel
 */
public WritableRaster createCompatibleWritableRaster (int w, int h) {
    int[] bOffs = {2, 1, 0};
    return Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                          w, h, w*3, 3,
                                          bOffs, null);
}
 

private BufferedImage create3ByteImage(int[] nBits, int[] bOffs) {
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    ColorModel colorModel =
        new ComponentColorModel(cs, nBits,
                                false, false,
                                Transparency.OPAQUE,
                                DataBuffer.TYPE_BYTE);
    WritableRaster raster =
        Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                       w, h,
                                       w*3, 3,
                                       bOffs, null);
    return new BufferedImage(colorModel, raster, false, null);
}
 

/**
 * Creates a WritableRaster with the specified width and height, that
 * has a data layout (SampleModel) compatible with this ColorModel.
 * @see WritableRaster
 * @see SampleModel
 */
public WritableRaster createCompatibleWritableRaster (int w, int h) {
    int[] bOffs = {2, 1, 0};
    return Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                          w, h, w*3, 3,
                                          bOffs, null);
}
 

@Override
public WritableRaster createCompatibleWritableRaster(final int w,
	final int h)
{
	return Raster.createInterleavedRaster(DataBuffer.TYPE_USHORT, w, h, 1,
		null);
}
 

private BufferedImage create3ByteImage(int[] nBits, int[] bOffs) {
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    ColorModel colorModel =
        new ComponentColorModel(cs, nBits,
                                false, false,
                                Transparency.OPAQUE,
                                DataBuffer.TYPE_BYTE);
    WritableRaster raster =
        Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                       w, h,
                                       w*3, 3,
                                       bOffs, null);
    return new BufferedImage(colorModel, raster, false, null);
}
 

/**
 * Creates a WritableRaster with the specified width and height, that
 * has a data layout (SampleModel) compatible with this ColorModel.
 * @see WritableRaster
 * @see SampleModel
 */
public WritableRaster createCompatibleWritableRaster (int w, int h) {
    int[] bOffs = {2, 1, 0};
    return Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                          w, h, w*3, 3,
                                          bOffs, null);
}
 

private BufferedImage read256ColorPcx(InputStream is) throws Exception {
	int totalBytes = bytesPerLine*NPlanes;
       byte pixels[] = new byte[totalBytes*height];		

       byte[] data = IOUtils.readFully(is, 4096);

	int colorsUsed = (1<<NPlanes*pcxHeader.bits_per_pixel);
	int color_tb_bytes = 3*colorsUsed;
	
	rgbColorPalette = new int[colorsUsed];

	int buf_len = data.length - color_tb_bytes;
	byte brgb[] = ArrayUtils.subArray(data, 0, buf_len);
     
       readPalette(ArrayUtils.subArray(data, buf_len, color_tb_bytes));

    /** 
     * If a BufferedInputStream is used for a 256-color image, we have to use 
	 * mark(int), skip(long) and reset() methods to put the stream pointer to
	 * the beginning of the color palette, fill the color palette and reset the pointer to
	 * the beginning of the image data. This is awkward and equally memory consuming since
	 * the system must maintain a buffer for the reset() method and we have to keep track
	 * of the skip(long) method to ensure reading of the required bytes as shown below:
	 * 	
	 * <p> 
	 * is.mark(available);
        * long i = 0, count = 0;
	 *
        * while(count < buf_len)
	 *  {
	 *     i = is.skip(buf_len-count);
        *     count += i;
	 *  }
	 *
	 * readPalette(is, color_tb_bytes);
	 * is.reset();
        *
 	 * @see java.io.BufferedInputStream
	 */

	LOGGER.info("256 color pcx image!");

	readScanLines(brgb, buf_len, pixels);   	
   	is.close();    	
	//Create a BufferedImage
	int[] off = {0};//band offset, we have only one band start at 0
	DataBuffer db = new DataBufferByte(pixels, pixels.length);
	WritableRaster raster = Raster.createInterleavedRaster(db, width, height, bytesPerLine, 1, off, null);
	ColorModel cm = new IndexColorModel(8, rgbColorPalette.length, rgbColorPalette, 0, false, -1, DataBuffer.TYPE_BYTE);
	
	return new BufferedImage(cm, raster, false, null);
}
 

private static WritableRaster createDstRaster() {
    WritableRaster r = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
            w, h, 4, new Point(0, 0));

    return r;
}
 

/**
 * Returns the content of the given image as an AWT buffered image with an RGB color space.
 * If a color key mask is provided then an ARGB image is returned instead.
 * This method never returns null.
 * @param pdImage the image to read
 * @param region The region of the source image to get, or null if the entire image is needed.
 *               The actual region will be clipped to the dimensions of the source image.
 * @param subsampling The amount of rows and columns to advance for every output pixel, a value
 * of 1 meaning every pixel will be read. It must not be larger than the image width or height.
 * @param colorKey an optional color key mask
 * @return content of this image as an (A)RGB buffered image
 * @throws IOException if the image cannot be read
 */
public static BufferedImage getRGBImage(PDImage pdImage, Rectangle region, int subsampling,
                                        COSArray colorKey) throws IOException
{
    if (pdImage.isEmpty())
    {
        throw new IOException("Image stream is empty");
    }
    Rectangle clipped = clipRegion(pdImage, region);

    // get parameters, they must be valid or have been repaired
    final PDColorSpace colorSpace = pdImage.getColorSpace();
    final int numComponents = colorSpace.getNumberOfComponents();
    final int width = (int) Math.ceil(clipped.getWidth() / subsampling);
    final int height = (int) Math.ceil(clipped.getHeight() / subsampling);
    final int bitsPerComponent = pdImage.getBitsPerComponent();
    final float[] decode = getDecodeArray(pdImage);

    if (width <= 0 || height <= 0 || pdImage.getWidth() <= 0 || pdImage.getHeight() <= 0)
    {
        throw new IOException("image width and height must be positive");
    }

    try
    {
        if (bitsPerComponent == 1 && colorKey == null && numComponents == 1)
        {
            return from1Bit(pdImage, clipped, subsampling, width, height);
        }

        // An AWT raster must use 8/16/32 bits per component. Images with < 8bpc
        // will be unpacked into a byte-backed raster. Images with 16bpc will be reduced
        // in depth to 8bpc as they will be drawn to TYPE_INT_RGB images anyway. All code
        // in PDColorSpace#toRGBImage expects an 8-bit range, i.e. 0-255.
        // Interleaved raster allows chunk-copying for 8-bit images.
        WritableRaster raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, width, height,
                numComponents, new Point(0, 0));
        final float[] defaultDecode = pdImage.getColorSpace().getDefaultDecode(8);
        if (bitsPerComponent == 8 && Arrays.equals(decode, defaultDecode) && colorKey == null)
        {
            // convert image, faster path for non-decoded, non-colormasked 8-bit images
            return from8bit(pdImage, raster, clipped, subsampling, width, height);
        }
        return fromAny(pdImage, raster, colorKey, clipped, subsampling, width, height);
    }
    catch (NegativeArraySizeException ex)
    {
        throw new IOException(ex);
    }
}
 

private static WritableRaster createDstRaster() {
    WritableRaster r = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
            w, h, 4, new Point(0, 0));

    return r;
}
 

private static WritableRaster createDstRaster() {
    WritableRaster r = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
            w, h, 4, new Point(0, 0));

    return r;
}
 

@Override
protected byte[] imageToPlatformBytes(Image image, long format)
        throws IOException {
    String mimeType = null;
    if (format == CF_PNG) {
        mimeType = "image/png";
    } else if (format == CF_JFIF) {
        mimeType = "image/jpeg";
    }
    if (mimeType != null) {
        return imageToStandardBytes(image, mimeType);
    }

    int width = 0;
    int height = 0;

    if (image instanceof ToolkitImage) {
        ImageRepresentation ir = ((ToolkitImage)image).getImageRep();
        ir.reconstruct(ImageObserver.ALLBITS);
        width = ir.getWidth();
        height = ir.getHeight();
    } else {
        width = image.getWidth(null);
        height = image.getHeight(null);
    }

    // Fix for 4919639.
    // Some Windows native applications (e.g. clipbrd.exe) do not handle
    // 32-bpp DIBs correctly.
    // As a workaround we switched to 24-bpp DIBs.
    // MSDN prescribes that the bitmap array for a 24-bpp should consist of
    // 3-byte triplets representing blue, green and red components of a
    // pixel respectively. Additionally each scan line must be padded with
    // zeroes to end on a LONG data-type boundary. LONG is always 32-bit.
    // We render the given Image to a BufferedImage of type TYPE_3BYTE_BGR
    // with non-default scanline stride and pass the resulting data buffer
    // to the native code to fill the BITMAPINFO structure.
    int mod = (width * 3) % 4;
    int pad = mod > 0 ? 4 - mod : 0;

    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    int[] nBits = {8, 8, 8};
    int[] bOffs = {2, 1, 0};
    ColorModel colorModel =
            new ComponentColorModel(cs, nBits, false, false,
                    Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
    WritableRaster raster =
            Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, width, height,
                    width * 3 + pad, 3, bOffs, null);

    BufferedImage bimage = new BufferedImage(colorModel, raster, false, null);

    // Some Windows native applications (e.g. clipbrd.exe) do not understand
    // top-down DIBs.
    // So we flip the image vertically and create a bottom-up DIB.
    AffineTransform imageFlipTransform =
            new AffineTransform(1, 0, 0, -1, 0, height);

    Graphics2D g2d = bimage.createGraphics();

    try {
        g2d.drawImage(image, imageFlipTransform, null);
    } finally {
        g2d.dispose();
    }

    DataBufferByte buffer = (DataBufferByte)raster.getDataBuffer();

    byte[] imageData = buffer.getData();
    return imageDataToPlatformImageBytes(imageData, width, height, format);
}
 

@Override
protected byte[] imageToPlatformBytes(Image image, long format)
        throws IOException {
    String mimeType = null;
    if (format == CF_PNG) {
        mimeType = "image/png";
    } else if (format == CF_JFIF) {
        mimeType = "image/jpeg";
    }
    if (mimeType != null) {
        return imageToStandardBytes(image, mimeType);
    }

    int width = 0;
    int height = 0;

    if (image instanceof ToolkitImage) {
        ImageRepresentation ir = ((ToolkitImage)image).getImageRep();
        ir.reconstruct(ImageObserver.ALLBITS);
        width = ir.getWidth();
        height = ir.getHeight();
    } else {
        width = image.getWidth(null);
        height = image.getHeight(null);
    }

    // Fix for 4919639.
    // Some Windows native applications (e.g. clipbrd.exe) do not handle
    // 32-bpp DIBs correctly.
    // As a workaround we switched to 24-bpp DIBs.
    // MSDN prescribes that the bitmap array for a 24-bpp should consist of
    // 3-byte triplets representing blue, green and red components of a
    // pixel respectively. Additionally each scan line must be padded with
    // zeroes to end on a LONG data-type boundary. LONG is always 32-bit.
    // We render the given Image to a BufferedImage of type TYPE_3BYTE_BGR
    // with non-default scanline stride and pass the resulting data buffer
    // to the native code to fill the BITMAPINFO structure.
    int mod = (width * 3) % 4;
    int pad = mod > 0 ? 4 - mod : 0;

    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    int[] nBits = {8, 8, 8};
    int[] bOffs = {2, 1, 0};
    ColorModel colorModel =
            new ComponentColorModel(cs, nBits, false, false,
                    Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
    WritableRaster raster =
            Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, width, height,
                    width * 3 + pad, 3, bOffs, null);

    BufferedImage bimage = new BufferedImage(colorModel, raster, false, null);

    // Some Windows native applications (e.g. clipbrd.exe) do not understand
    // top-down DIBs.
    // So we flip the image vertically and create a bottom-up DIB.
    AffineTransform imageFlipTransform =
            new AffineTransform(1, 0, 0, -1, 0, height);

    Graphics2D g2d = bimage.createGraphics();

    try {
        g2d.drawImage(image, imageFlipTransform, null);
    } finally {
        g2d.dispose();
    }

    DataBufferByte buffer = (DataBufferByte)raster.getDataBuffer();

    byte[] imageData = buffer.getData();
    return imageDataToPlatformImageBytes(imageData, width, height, format);
}
 

private static Raster createSrcRaster() {
    WritableRaster r = Raster.createInterleavedRaster(DataBuffer.TYPE_USHORT,
            w, h, 4, new Point(0, 0));

    return r;
}