/*
* $RCSfile: OrOpImage.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:56:38 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.opimage;
import java.awt.Rectangle;
import java.awt.image.DataBuffer;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.awt.image.WritableRaster;
import com.lightcrafts.mediax.jai.ImageLayout;
import com.lightcrafts.mediax.jai.PointOpImage;
import com.lightcrafts.mediax.jai.RasterAccessor;
import com.lightcrafts.mediax.jai.RasterFormatTag;
import java.util.Map;
// import com.lightcrafts.media.jai.test.OpImageTester;
/**
* An <code>OpImage</code> implementing the "Or" operation as
* described in <code>com.lightcrafts.mediax.jai.operator.OrDescriptor</code>.
*
* <p>This <code>OpImage</code> logically "ors" the pixel values of two source
* images on a per-band basis. In case the two source images have different
* number of bands, the number of bands for the destination image is the
* smaller band number of the two source images. That is
* <code>dstNumBands = Math.min(src1NumBands, src2NumBands)</code>.
* In case the two source images have different data types, the data type
* for the destination image is the bigger data type of the two source
* images.
*
* <p>The value of the pixel (x, y) in the destination image is defined as:
* <pre>
* for (b = 0; b < numBands; b++) {
* dst[y][x][b] = src1[y][x][b] | src2[y][x][b];
* }
* </pre>
*
* The data type <code>byte</code> is treated as unsigned, with maximum
* value as 255 and minimum value as 0.
*
* @since EA2
* @see com.lightcrafts.mediax.jai.operator.OrDescriptor
* @see OrCRIF
*
*/
final class OrOpImage extends PointOpImage {
/**
* Constructs an <code>OrOpImage</code>.
*
* <p>The <code>layout</code> parameter may optionally contains the
* tile grid layout, sample model, and/or color model. The image
* dimension is determined by the intersection of the bounding boxes
* of the two source images.
*
* <p>The image layout of the first source image, <code>source1</code>,
* is used as the fall-back for the image layout of the destination
* image. Any layout parameters not specified in the <code>layout</code>
* argument are set to the same value as that of <code>source1</code>.
*
* @param source1 The first source image.
* @param source2 The second source image.
* @param layout The destination image layout.
*/
public OrOpImage(RenderedImage source1,
RenderedImage source2,
Map config,
ImageLayout layout) {
super(source1, source2, layout, config, true);
// Set flag to permit in-place operation.
permitInPlaceOperation();
}
/**
* Ors the pixel values of two source images within a specified
* rectangle.
*
* @param sources Cobbled sources, guaranteed to provide all the
* source data necessary for computing the rectangle.
* @param dest The tile containing the rectangle to be computed.
* @param destRect The rectangle within the tile to be computed.
*/
protected void computeRect(Raster[] sources,
WritableRaster dest,
Rectangle destRect) {
// Retrieve format tags.
RasterFormatTag[] formatTags = getFormatTags();
/* For PointOpImage, srcRect = destRect. */
RasterAccessor s1 = new RasterAccessor(sources[0], destRect,
formatTags[0],
getSource(0).getColorModel());
RasterAccessor s2 = new RasterAccessor(sources[1], destRect,
formatTags[1],
getSource(1).getColorModel());
RasterAccessor d = new RasterAccessor(dest, destRect,
formatTags[2], getColorModel());
if(d.isBinary()) {
byte[] src1Bits = s1.getBinaryDataArray();
byte[] src2Bits = s2.getBinaryDataArray();
byte[] dstBits = d.getBinaryDataArray();
int length = dstBits.length;
for(int i = 0; i < length; i++) {
dstBits[i] = (byte)(src1Bits[i] | src2Bits[i]);
}
d.copyBinaryDataToRaster();
return;
}
int src1LineStride = s1.getScanlineStride();
int src1PixelStride = s1.getPixelStride();
int[] src1BandOffsets = s1.getBandOffsets();
int src2LineStride = s2.getScanlineStride();
int src2PixelStride = s2.getPixelStride();
int[] src2BandOffsets = s2.getBandOffsets();
int dstNumBands = d.getNumBands();
int dstWidth = d.getWidth();
int dstHeight = d.getHeight();
int dstLineStride = d.getScanlineStride();
int dstPixelStride = d.getPixelStride();
int[] dstBandOffsets = d.getBandOffsets();
switch (d.getDataType()) {
case DataBuffer.TYPE_BYTE:
byteLoop(dstNumBands, dstWidth, dstHeight,
src1LineStride, src1PixelStride,
src1BandOffsets, s1.getByteDataArrays(),
src2LineStride, src2PixelStride,
src2BandOffsets, s2.getByteDataArrays(),
dstLineStride, dstPixelStride,
dstBandOffsets, d.getByteDataArrays());
break;
case DataBuffer.TYPE_USHORT:
case DataBuffer.TYPE_SHORT:
shortLoop(dstNumBands, dstWidth, dstHeight,
src1LineStride, src1PixelStride,
src1BandOffsets, s1.getShortDataArrays(),
src2LineStride, src2PixelStride,
src2BandOffsets, s2.getShortDataArrays(),
dstLineStride, dstPixelStride,
dstBandOffsets, d.getShortDataArrays());
break;
case DataBuffer.TYPE_INT:
intLoop(dstNumBands, dstWidth, dstHeight,
src1LineStride, src1PixelStride,
src1BandOffsets, s1.getIntDataArrays(),
src2LineStride, src2PixelStride,
src2BandOffsets, s2.getIntDataArrays(),
dstLineStride, dstPixelStride,
dstBandOffsets, d.getIntDataArrays());
break;
}
d.copyDataToRaster();
}
private void byteLoop(int dstNumBands, int dstWidth, int dstHeight,
int src1LineStride, int src1PixelStride,
int[] src1BandOffsets, byte[][] src1Data,
int src2LineStride, int src2PixelStride,
int[] src2BandOffsets, byte[][] src2Data,
int dstLineStride, int dstPixelStride,
int[] dstBandOffsets, byte[][] dstData) {
for (int b = 0; b < dstNumBands; b++) {
byte[] s1 = src1Data[b];
byte[] s2 = src2Data[b];
byte[] d = dstData[b];
int src1LineOffset = src1BandOffsets[b];
int src2LineOffset = src2BandOffsets[b];
int dstLineOffset = dstBandOffsets[b];
for (int h = 0; h < dstHeight; h++) {
int src1PixelOffset = src1LineOffset;
int src2PixelOffset = src2LineOffset;
int dstPixelOffset = dstLineOffset;
src1LineOffset += src1LineStride;
src2LineOffset += src2LineStride;
dstLineOffset += dstLineStride;
for (int w = 0; w < dstWidth; w++) {
d[dstPixelOffset] = (byte)(s1[src1PixelOffset] |
s2[src2PixelOffset]);
src1PixelOffset += src1PixelStride;
src2PixelOffset += src2PixelStride;
dstPixelOffset += dstPixelStride;
}
}
}
}
private void shortLoop(int dstNumBands, int dstWidth, int dstHeight,
int src1LineStride, int src1PixelStride,
int[] src1BandOffsets, short[][] src1Data,
int src2LineStride, int src2PixelStride,
int[] src2BandOffsets, short[][] src2Data,
int dstLineStride, int dstPixelStride,
int[] dstBandOffsets, short[][] dstData) {
for (int b = 0; b < dstNumBands; b++) {
short[] s1 = src1Data[b];
short[] s2 = src2Data[b];
short[] d = dstData[b];
int src1LineOffset = src1BandOffsets[b];
int src2LineOffset = src2BandOffsets[b];
int dstLineOffset = dstBandOffsets[b];
for (int h = 0; h < dstHeight; h++) {
int src1PixelOffset = src1LineOffset;
int src2PixelOffset = src2LineOffset;
int dstPixelOffset = dstLineOffset;
src1LineOffset += src1LineStride;
src2LineOffset += src2LineStride;
dstLineOffset += dstLineStride;
for (int w = 0; w < dstWidth; w++) {
d[dstPixelOffset] = (short)(s1[src1PixelOffset] |
s2[src2PixelOffset]);
src1PixelOffset += src1PixelStride;
src2PixelOffset += src2PixelStride;
dstPixelOffset += dstPixelStride;
}
}
}
}
private void intLoop(int dstNumBands, int dstWidth, int dstHeight,
int src1LineStride, int src1PixelStride,
int[] src1BandOffsets, int[][] src1Data,
int src2LineStride, int src2PixelStride,
int[] src2BandOffsets, int[][] src2Data,
int dstLineStride, int dstPixelStride,
int[] dstBandOffsets, int[][] dstData) {
for (int b = 0; b < dstNumBands; b++) {
int[] s1 = src1Data[b];
int[] s2 = src2Data[b];
int[] d = dstData[b];
int src1LineOffset = src1BandOffsets[b];
int src2LineOffset = src2BandOffsets[b];
int dstLineOffset = dstBandOffsets[b];
for (int h = 0; h < dstHeight; h++) {
int src1PixelOffset = src1LineOffset;
int src2PixelOffset = src2LineOffset;
int dstPixelOffset = dstLineOffset;
src1LineOffset += src1LineStride;
src2LineOffset += src2LineStride;
dstLineOffset += dstLineStride;
for (int w = 0; w < dstWidth; w++) {
d[dstPixelOffset] = s1[src1PixelOffset] | s2[src2PixelOffset];
src1PixelOffset += src1PixelStride;
src2PixelOffset += src2PixelStride;
dstPixelOffset += dstPixelStride;
}
}
}
}
// public static void main(String args[]) {
// System.out.println("OrOpImage Test");
// ImageLayout layout;
// OpImage src1, src2, dst;
// Rectangle rect = new Rectangle(0, 0, 5, 5);
// System.out.println("1. PixelInterleaved byte 3-band");
// layout = OpImageTester.createImageLayout(
// 0, 0, 800, 800, 0, 0, 200, 200, DataBuffer.TYPE_BYTE, 3, false);
// src1 = OpImageTester.createRandomOpImage(layout);
// src2 = OpImageTester.createRandomOpImage(layout);
// dst = new OrOpImage(src1, src2, null, null);
// OpImageTester.testOpImage(dst, rect);
// OpImageTester.timeOpImage(dst, 10);
// System.out.println("2. Banded byte 3-band");
// layout = OpImageTester.createImageLayout(
// 0, 0, 800, 800, 0, 0, 200, 200, DataBuffer.TYPE_BYTE, 3, true);
// src1 = OpImageTester.createRandomOpImage(layout);
// src2 = OpImageTester.createRandomOpImage(layout);
// dst = new OrOpImage(src1, src2, null, null);
// OpImageTester.testOpImage(dst, rect);
// OpImageTester.timeOpImage(dst, 10);
// System.out.println("3. PixelInterleaved int 3-band");
// layout = OpImageTester.createImageLayout(
// 0, 0, 512, 512, 0, 0, 200, 200, DataBuffer.TYPE_INT, 3, false);
// src1 = OpImageTester.createRandomOpImage(layout);
// src2 = OpImageTester.createRandomOpImage(layout);
// dst = new OrOpImage(src1, src2, null, null);
// OpImageTester.testOpImage(dst, rect);
// OpImageTester.timeOpImage(dst, 10);
// System.out.println("4. Banded int 3-band");
// layout = OpImageTester.createImageLayout(
// 0, 0, 512, 512, 0, 0, 200, 200, DataBuffer.TYPE_INT, 3, true);
// src1 = OpImageTester.createRandomOpImage(layout);
// src2 = OpImageTester.createRandomOpImage(layout);
// dst = new OrOpImage(src1, src2, null, null);
// OpImageTester.testOpImage(dst, rect);
// OpImageTester.timeOpImage(dst, 10);
// }
}