/**
* Builds a new BufferedImage that is the difference between the two input images
*
* @param ref the reference bitmap
* @param gen the newly generated bitmap
* @return the diff bitmap
*/
public static BufferedImage buildDiffImage(BufferedImage ref, BufferedImage gen) {
BufferedImage diff =
new BufferedImage(ref.getWidth(), ref.getHeight(), BufferedImage.TYPE_INT_ARGB);
WritableRaster refWR = ref.getRaster();
WritableRaster genWR = gen.getRaster();
WritableRaster dstWR = diff.getRaster();
boolean refPre = ref.isAlphaPremultiplied();
if (!refPre) {
ColorModel cm = ref.getColorModel();
cm = GraphicsUtil.coerceData(refWR, cm, true);
ref = new BufferedImage(cm, refWR, true, null);
}
boolean genPre = gen.isAlphaPremultiplied();
if (!genPre) {
ColorModel cm = gen.getColorModel();
cm = GraphicsUtil.coerceData(genWR, cm, true);
gen = new BufferedImage(cm, genWR, true, null);
}
int w = ref.getWidth();
int h = ref.getHeight();
int y, i, val;
int[] refPix = null;
int[] genPix = null;
for (y = 0; y < h; y++) {
refPix = refWR.getPixels(0, y, w, 1, refPix);
genPix = genWR.getPixels(0, y, w, 1, genPix);
for (i = 0; i < refPix.length; i++) {
// val = ((genPix[i] - refPix[i]) * 5) + 128;
val = ((refPix[i] - genPix[i]) * 10) + 128;
if ((val & 0xFFFFFF00) != 0) {
if ((val & 0x80000000) != 0) {
val = 0;
} else {
val = 255;
}
}
genPix[i] = val;
}
dstWR.setPixels(0, y, w, 1, genPix);
}
if (!genPre) {
ColorModel cm = gen.getColorModel();
cm = GraphicsUtil.coerceData(genWR, cm, false);
}
if (!refPre) {
ColorModel cm = ref.getColorModel();
cm = GraphicsUtil.coerceData(refWR, cm, false);
}
return diff;
}
/** Superclass getRaster... */
public final Raster getRaster(int x, int y, int w, int h) {
if (w == 0 || h == 0) {
return null;
}
//
// If working raster is big enough, reuse it. Otherwise,
// build a large enough new one.
//
WritableRaster raster = saved;
if (raster == null || raster.getWidth() < w || raster.getHeight() < h) {
raster = getCachedRaster(dataModel, w, h);
saved = raster;
}
// Access raster internal int array. Because we use a DirectColorModel,
// we know the DataBuffer is of type DataBufferInt and the SampleModel
// is SinglePixelPackedSampleModel.
// Adjust for initial offset in DataBuffer and also for the scanline
// stride.
//
DataBufferInt rasterDB = (DataBufferInt) raster.getDataBuffer();
int[] pixels = rasterDB.getBankData()[0];
int off = rasterDB.getOffset();
int scanlineStride =
((SinglePixelPackedSampleModel) raster.getSampleModel()).getScanlineStride();
int adjust = scanlineStride - w;
fillRaster(pixels, off, adjust, x, y, w, h); // delegate to subclass.
GraphicsUtil.coerceData(raster, dataModel, model.isAlphaPremultiplied());
return raster;
}
public WritableRaster copyData(WritableRaster wr) {
// Get my source.
CachableRed src = (CachableRed) getSources().get(0);
Rectangle r = wr.getBounds();
r.x -= xinset;
r.y -= yinset;
r.width += 2 * xinset;
r.height += 2 * yinset;
// System.out.println("Gaussian GenR: " + wr);
// System.out.println("SrcReq: " + r);
ColorModel srcCM = src.getColorModel();
WritableRaster tmpR1 = null, tmpR2 = null;
tmpR1 = srcCM.createCompatibleWritableRaster(r.width, r.height);
{
WritableRaster fill;
fill = tmpR1.createWritableTranslatedChild(r.x, r.y);
src.copyData(fill);
}
if (srcCM.hasAlpha() && !srcCM.isAlphaPremultiplied())
GraphicsUtil.coerceData(tmpR1, srcCM, true);
// For the blur box approx we can use dest as our intermediate
// otherwise we let it default to null which means we create a new
// one...
// this lets the Vertical conv know how much is junk, so it
// doesn't bother to convolve the top and bottom edges
int skipX;
// long t1 = System.currentTimeMillis();
if (xinset == 0) {
skipX = 0;
} else if (convOp[0] != null) {
tmpR2 = getColorModel().createCompatibleWritableRaster(r.width, r.height);
tmpR2 = convOp[0].filter(tmpR1, tmpR2);
skipX = convOp[0].getKernel().getXOrigin();
// Swap them...
WritableRaster tmp = tmpR1;
tmpR1 = tmpR2;
tmpR2 = tmp;
} else {
if ((dX & 0x01) == 0) {
tmpR1 = boxFilterH(tmpR1, tmpR1, 0, 0, dX, dX / 2);
tmpR1 = boxFilterH(tmpR1, tmpR1, dX / 2, 0, dX, dX / 2 - 1);
tmpR1 = boxFilterH(tmpR1, tmpR1, dX - 1, 0, dX + 1, dX / 2);
skipX = dX - 1 + dX / 2;
} else {
tmpR1 = boxFilterH(tmpR1, tmpR1, 0, 0, dX, dX / 2);
tmpR1 = boxFilterH(tmpR1, tmpR1, dX / 2, 0, dX, dX / 2);
tmpR1 = boxFilterH(tmpR1, tmpR1, dX - 2, 0, dX, dX / 2);
skipX = dX - 2 + dX / 2;
}
}
if (yinset == 0) {
tmpR2 = tmpR1;
} else if (convOp[1] != null) {
if (tmpR2 == null) {
tmpR2 = getColorModel().createCompatibleWritableRaster(r.width, r.height);
}
tmpR2 = convOp[1].filter(tmpR1, tmpR2);
} else {
if ((dY & 0x01) == 0) {
tmpR1 = boxFilterV(tmpR1, tmpR1, skipX, 0, dY, dY / 2);
tmpR1 = boxFilterV(tmpR1, tmpR1, skipX, dY / 2, dY, dY / 2 - 1);
tmpR1 = boxFilterV(tmpR1, tmpR1, skipX, dY - 1, dY + 1, dY / 2);
} else {
tmpR1 = boxFilterV(tmpR1, tmpR1, skipX, 0, dY, dY / 2);
tmpR1 = boxFilterV(tmpR1, tmpR1, skipX, dY / 2, dY, dY / 2);
tmpR1 = boxFilterV(tmpR1, tmpR1, skipX, dY - 2, dY, dY / 2);
}
tmpR2 = tmpR1;
}
// long t2 = System.currentTimeMillis();
// System.out.println("Time: " + (t2-t1) +
// (((convOp[0] != null) || (convOp[1] != null))?
// " ConvOp":""));
// System.out.println("Rasters WR :" + wr.getBounds());
// System.out.println(" tmp:" + tmpR2.getBounds());
// System.out.println(" bounds:" + getBounds());
// System.out.println(" skipX:" + skipX +
// " dx:" + dX + " Dy: " + dY);
tmpR2 = tmpR2.createWritableTranslatedChild(r.x, r.y);
GraphicsUtil.copyData(tmpR2, wr);
return wr;
}
public WritableRaster copyData(WritableRaster wr) {
// Get my source.
CachableRed src = (CachableRed) getSources().get(0);
ColorModel srcCM = src.getColorModel();
SampleModel srcSM = src.getSampleModel();
// Fast case, SRGB source, INT Pack writable raster...
if (srcIssRGB && Any2sRGBRed.is_INT_PACK_COMP(wr.getSampleModel())) {
src.copyData(wr);
if (srcCM.hasAlpha()) GraphicsUtil.coerceData(wr, srcCM, false);
Any2sRGBRed.applyLut_INT(wr, sRGBToLsRGBLut);
return wr;
}
if (srcCM == null) {
// We don't really know much about this source, let's
// guess based on the number of bands...
float[][] matrix = null;
switch (srcSM.getNumBands()) {
case 1:
matrix = new float[1][3];
matrix[0][0] = 1; // Red
matrix[0][1] = 1; // Grn
matrix[0][2] = 1; // Blu
break;
case 2:
matrix = new float[2][4];
matrix[0][0] = 1; // Red
matrix[0][1] = 1; // Grn
matrix[0][2] = 1; // Blu
matrix[1][3] = 1; // Alpha
break;
case 3:
matrix = new float[3][3];
matrix[0][0] = 1; // Red
matrix[1][1] = 1; // Grn
matrix[2][2] = 1; // Blu
break;
default:
matrix = new float[srcSM.getNumBands()][4];
matrix[0][0] = 1; // Red
matrix[1][1] = 1; // Grn
matrix[2][2] = 1; // Blu
matrix[3][3] = 1; // Alpha
break;
}
Raster srcRas = src.getData(wr.getBounds());
BandCombineOp op = new BandCombineOp(matrix, null);
op.filter(srcRas, wr);
} else {
ColorModel dstCM = getColorModel();
BufferedImage dstBI;
if (!dstCM.hasAlpha()) {
// No alpha ao we don't have to work around the bug
// in the color convert op.
dstBI =
new BufferedImage(
dstCM, wr.createWritableTranslatedChild(0, 0), dstCM.isAlphaPremultiplied(), null);
} else {
// All this nonsense is to work around the fact that
// the Color convert op doesn't properly copy the
// Alpha from src to dst.
SinglePixelPackedSampleModel dstSM;
dstSM = (SinglePixelPackedSampleModel) wr.getSampleModel();
int[] masks = dstSM.getBitMasks();
SampleModel dstSMNoA =
new SinglePixelPackedSampleModel(
dstSM.getDataType(),
dstSM.getWidth(),
dstSM.getHeight(),
dstSM.getScanlineStride(),
new int[] {masks[0], masks[1], masks[2]});
ColorModel dstCMNoA = GraphicsUtil.Linear_sRGB;
WritableRaster dstWr;
dstWr = Raster.createWritableRaster(dstSMNoA, wr.getDataBuffer(), new Point(0, 0));
dstWr =
dstWr.createWritableChild(
wr.getMinX() - wr.getSampleModelTranslateX(),
wr.getMinY() - wr.getSampleModelTranslateY(),
wr.getWidth(),
wr.getHeight(),
0,
0,
null);
dstBI = new BufferedImage(dstCMNoA, dstWr, false, null);
}
// Divide out alpha if we have it. We need to do this since
// the color convert may not be a linear operation which may
// lead to out of range values.
ColorModel srcBICM = srcCM;
WritableRaster srcWr;
if ((srcCM.hasAlpha() == true) && (srcCM.isAlphaPremultiplied() != false)) {
Rectangle wrR = wr.getBounds();
SampleModel sm = srcCM.createCompatibleSampleModel(wrR.width, wrR.height);
srcWr = Raster.createWritableRaster(sm, new Point(wrR.x, wrR.y));
src.copyData(srcWr);
srcBICM = GraphicsUtil.coerceData(srcWr, srcCM, false);
} else {
Raster srcRas = src.getData(wr.getBounds());
srcWr = GraphicsUtil.makeRasterWritable(srcRas);
}
BufferedImage srcBI;
srcBI = new BufferedImage(srcBICM, srcWr.createWritableTranslatedChild(0, 0), false, null);
/*
* System.out.println("src: " + srcBI.getWidth() + "x" +
* srcBI.getHeight());
* System.out.println("dst: " + dstBI.getWidth() + "x" +
* dstBI.getHeight());
*/
ColorConvertOp op = new ColorConvertOp(null);
op.filter(srcBI, dstBI);
if (dstCM.hasAlpha())
copyBand(
srcWr, srcSM.getNumBands() - 1,
wr, getSampleModel().getNumBands() - 1);
}
return wr;
}
public void genRect(WritableRaster wr) {
if (me2src == null) return;
Rectangle srcR = me2src.createTransformedShape(wr.getBounds()).getBounds();
// System.out.println("Affine wrR: " + wr.getBounds());
// System.out.println("Affine srcR: " + srcR);
// Outset by two pixels so we get context for interpolation...
srcR.setBounds(srcR.x - 1, srcR.y - 1, srcR.width + 2, srcR.height + 2);
// Don't try and get data from src that it doesn't have...
CachableRed src = (CachableRed) getSources().get(0);
// Raster srcRas = src.getData(srcR);
if (!srcR.intersects(src.getBounds())) return;
Raster srcRas = src.getData(srcR.intersection(src.getBounds()));
if (srcRas == null) return;
// This works around the problem that the buffered ops
// completely ignore the coords of the Rasters passed in.
AffineTransform aff = (AffineTransform) src2me.clone();
// Translate what is at 0,0 (which will be what our current
// minX/Y is) to our current minX,minY.
aff.concatenate(AffineTransform.getTranslateInstance(srcRas.getMinX(), srcRas.getMinY()));
Point2D srcPt = new Point2D.Float(wr.getMinX(), wr.getMinY());
srcPt = me2src.transform(srcPt, null);
Point2D destPt =
new Point2D.Double(srcPt.getX() - srcRas.getMinX(), srcPt.getY() - srcRas.getMinY());
destPt = aff.transform(destPt, null);
// Translate what will be at minX,minY to zero, zero
// which where java2d will think the real minX,minY is.
aff.preConcatenate(AffineTransform.getTranslateInstance(-destPt.getX(), -destPt.getY()));
AffineTransformOp op = new AffineTransformOp(aff, hints);
BufferedImage srcBI, myBI;
ColorModel srcCM = src.getColorModel();
ColorModel myCM = getColorModel();
WritableRaster srcWR = (WritableRaster) srcRas;
// If the output buffer is not premultiplied in certain cases
// it fails to properly divide out the Alpha (it always does
// the affine on premultiplied data). We help it out by
// premultiplying for it.
srcCM = GraphicsUtil.coerceData(srcWR, srcCM, true);
srcBI =
new BufferedImage(
srcCM, srcWR.createWritableTranslatedChild(0, 0), srcCM.isAlphaPremultiplied(), null);
myBI =
new BufferedImage(
myCM, wr.createWritableTranslatedChild(0, 0), myCM.isAlphaPremultiplied(), null);
op.filter(srcBI, myBI);
// if ((count % 40) == 0) {
// org.apache.batik.ImageDisplay.showImage("Src: " , srcBI);
// org.apache.batik.ImageDisplay.showImage("Dst: " , myBI);
// }
// count++;
}
