Examples with DataBuffer java.awt.image.DataBuffer used on opensource projects

Example 26 with DataBuffer

use of java.awt.image.DataBuffer in project jdk8u_jdk by JetBrains.

the class PNGImageReader method createRaster.

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, width, height, bitDepth, origin);
    } else if (bitDepth <= 8) {
        dataBuffer = new DataBufferByte(height * scanlineStride);
        ras = Raster.createInterleavedRaster(dataBuffer, width, height, scanlineStride, bands, bandOffsets[bands], origin);
    } else {
        dataBuffer = new DataBufferUShort(height * scanlineStride);
        ras = Raster.createInterleavedRaster(dataBuffer, width, height, scanlineStride, bands, bandOffsets[bands], origin);
    }
    return ras;
}

Example 27 with DataBuffer

use of java.awt.image.DataBuffer in project jlineup by otto-de.

the class ImageService method bufferedImagesEqualQuick.

// A very fast byte buffer based image comparison for images containing INT or BYTE type representations
public static boolean bufferedImagesEqualQuick(BufferedImage image1, BufferedImage image2) {
    DataBuffer dataBuffer1 = image1.getRaster().getDataBuffer();
    DataBuffer dataBuffer2 = image2.getRaster().getDataBuffer();
    if (dataBuffer1 instanceof DataBufferByte && dataBuffer2 instanceof DataBufferByte) {
        DataBufferByte dataBufferBytes1 = (DataBufferByte) dataBuffer1;
        DataBufferByte dataBufferBytes2 = (DataBufferByte) dataBuffer2;
        for (int bank = 0; bank < dataBufferBytes1.getNumBanks(); bank++) {
            byte[] bytes1 = dataBufferBytes1.getData(bank);
            byte[] bytes2 = dataBufferBytes2.getData(bank);
            if (!Arrays.equals(bytes1, bytes2)) {
                return false;
            }
        }
    } else if (dataBuffer1 instanceof DataBufferInt && dataBuffer2 instanceof DataBufferInt) {
        DataBufferInt dataBufferInt1 = (DataBufferInt) dataBuffer1;
        DataBufferInt dataBufferInt2 = (DataBufferInt) dataBuffer2;
        for (int bank = 0; bank < dataBufferInt1.getNumBanks(); bank++) {
            int[] ints1 = dataBufferInt1.getData(bank);
            int[] ints2 = dataBufferInt2.getData(bank);
            if (!Arrays.equals(ints1, ints2)) {
                return false;
            }
        }
    } else {
        return false;
    }
    return true;
}

Example 28 with DataBuffer

use of java.awt.image.DataBuffer in project tigervnc by TigerVNC.

the class ModifiablePixelBuffer method maskRect.

// Copy pixel data to the buffer through a mask
// pixels is a pointer to the pixel to be copied to r.tl.
// maskPos specifies the pixel offset in the mask to start from.
// mask_ is a pointer to the mask bits at (0,0).
// pStride and mStride are the strides of the pixel and mask buffers.
public void maskRect(Rect r, Object pixels, byte[] mask_) {
    Rect cr = getRect().intersect(r);
    if (cr.is_empty())
        return;
    WritableRaster data = getBufferRW(cr);
    // FIXME
    ColorModel cm = format.getColorModel();
    SampleModel sm = cm.createCompatibleSampleModel(r.width(), r.height());
    DataBuffer db = null;
    ByteBuffer src = ByteBuffer.wrap((byte[]) pixels).order(format.getByteOrder());
    Buffer dst;
    switch(sm.getTransferType()) {
        case TYPE_INT:
            dst = IntBuffer.allocate(src.remaining()).put(src.asIntBuffer());
            db = new DataBufferInt(((IntBuffer) dst).array(), r.area());
            break;
        case TYPE_BYTE:
            db = new DataBufferByte(src.array(), r.area());
            break;
        case TYPE_SHORT:
            dst = ShortBuffer.allocate(src.remaining()).put(src.asShortBuffer());
            db = new DataBufferShort(((ShortBuffer) dst).array(), r.area());
            break;
    }
    assert (db != null);
    Raster raster = Raster.createRaster(sm, db, new java.awt.Point(0, 0));
    ColorConvertOp converter = format.getColorConvertOp(cm.getColorSpace());
    WritableRaster t = data.createCompatibleWritableRaster();
    converter.filter(raster, t);
    int w = cr.width();
    int h = cr.height();
    Point offset = new Point(cr.tl.x - r.tl.x, cr.tl.y - r.tl.y);
    int maskBytesPerRow = (w + 7) / 8;
    synchronized (image) {
        for (int y = 0; y < h; y++) {
            int cy = offset.y + y;
            for (int x = 0; x < w; x++) {
                int cx = offset.x + x;
                int byte_ = cy * maskBytesPerRow + y / 8;
                int bit = 7 - cx % 8;
                if ((mask_[byte_] & (1 << bit)) != 0)
                    data.setDataElements(x + cx, y + cy, t.getDataElements(x + cx, y + cy, null));
            }
        }
    }
    commitBufferRW(r);
}