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Java Advanced Imaging Image I/O Tools API core, but without the classes
involved with javax.media.jai dependencies, JPEG2000 or
codecLibJIIO, meaning that this library can be distributed under the
modified BSD license and should be GPL compatible.
The newest version!
/*
* $RCSfile: TIFFRenderedImage.java,v $
*
*
* Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for
* use in the design, construction, operation or maintenance of any
* nuclear facility.
*
* $Revision: 1.2 $
* $Date: 2006/02/22 22:06:23 $
* $State: Exp $
*/
package com.github.jaiimageio.impl.plugins.tiff;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.awt.image.SampleModel;
import java.awt.image.WritableRaster;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageTypeSpecifier;
import com.github.jaiimageio.plugins.tiff.TIFFImageReadParam;
import com.github.jaiimageio.plugins.tiff.TIFFTagSet;
public class TIFFRenderedImage implements RenderedImage {
TIFFImageReader reader;
int imageIndex;
ImageReadParam tileParam;
int subsampleX;
int subsampleY;
boolean isSubsampling;
int width;
int height;
int tileWidth;
int tileHeight;
ImageTypeSpecifier its;
public TIFFRenderedImage(TIFFImageReader reader,
int imageIndex,
ImageReadParam readParam,
int width, int height) throws IOException {
this.reader = reader;
this.imageIndex = imageIndex;
this.tileParam = cloneImageReadParam(readParam, false);
this.subsampleX = tileParam.getSourceXSubsampling();
this.subsampleY = tileParam.getSourceYSubsampling();
this.isSubsampling = this.subsampleX != 1 || this.subsampleY != 1;
this.width = width/subsampleX;
this.height = height/subsampleY;
// If subsampling is being used, we may not match the
// true tile grid exactly, but everything should still work
this.tileWidth = reader.getTileWidth(imageIndex)/subsampleX;
this.tileHeight = reader.getTileHeight(imageIndex)/subsampleY;
Iterator iter = reader.getImageTypes(imageIndex);
this.its = (ImageTypeSpecifier)iter.next();
tileParam.setDestinationType(its);
}
/**
* Creates a copy of param. The source subsampling and
* and bands settings and the destination bands and offset settings
* are copied. If param is a TIFFImageReadParam
* then the TIFFDecompressor and
* TIFFColorConverter settings are also copied; otherwise
* they are explicitly set to null.
*
* @param param the parameters to be copied.
* @param copyTagSets whether the TIFFTagSet settings
* should be copied if set.
* @return copied parameters.
*/
private ImageReadParam cloneImageReadParam(ImageReadParam param,
boolean copyTagSets) {
// Create a new TIFFImageReadParam.
TIFFImageReadParam newParam = new TIFFImageReadParam();
// Copy the basic settings.
newParam.setSourceSubsampling(param.getSourceXSubsampling(),
param.getSourceYSubsampling(),
param.getSubsamplingXOffset(),
param.getSubsamplingYOffset());
newParam.setSourceBands(param.getSourceBands());
newParam.setDestinationBands(param.getDestinationBands());
newParam.setDestinationOffset(param.getDestinationOffset());
// Set the decompressor and color converter.
if(param instanceof TIFFImageReadParam) {
// Copy the settings from the input parameter.
TIFFImageReadParam tparam = (TIFFImageReadParam)param;
newParam.setTIFFDecompressor(tparam.getTIFFDecompressor());
newParam.setColorConverter(tparam.getColorConverter());
if(copyTagSets) {
List tagSets = tparam.getAllowedTagSets();
if(tagSets != null) {
Iterator tagSetIter = tagSets.iterator();
if(tagSetIter != null) {
while(tagSetIter.hasNext()) {
TIFFTagSet tagSet = (TIFFTagSet)tagSetIter.next();
newParam.addAllowedTagSet(tagSet);
}
}
}
}
} else {
// Set the decompressor and color converter to null.
newParam.setTIFFDecompressor(null);
newParam.setColorConverter(null);
}
return newParam;
}
public Vector getSources() {
return null;
}
public Object getProperty(String name) {
return java.awt.Image.UndefinedProperty;
}
public String[] getPropertyNames() {
return null;
}
public ColorModel getColorModel() {
return its.getColorModel();
}
public SampleModel getSampleModel() {
return its.getSampleModel();
}
public int getWidth() {
return width;
}
public int getHeight() {
return height;
}
public int getMinX() {
return 0;
}
public int getMinY() {
return 0;
}
public int getNumXTiles() {
return (width + tileWidth - 1)/tileWidth;
}
public int getNumYTiles() {
return (height + tileHeight - 1)/tileHeight;
}
public int getMinTileX() {
return 0;
}
public int getMinTileY() {
return 0;
}
public int getTileWidth() {
return tileWidth;
}
public int getTileHeight() {
return tileHeight;
}
public int getTileGridXOffset() {
return 0;
}
public int getTileGridYOffset() {
return 0;
}
public Raster getTile(int tileX, int tileY) {
Rectangle tileRect = new Rectangle(tileX*tileWidth,
tileY*tileHeight,
tileWidth,
tileHeight);
return getData(tileRect);
}
public Raster getData() {
return read(new Rectangle(0, 0, getWidth(), getHeight()));
}
public Raster getData(Rectangle rect) {
return read(rect);
}
// This method needs to be synchronized as it updates the instance
// variable 'tileParam'.
public synchronized WritableRaster read(Rectangle rect) {
// XXX Does this need to consider the subsampling offsets or is
// that handled implicitly by the reader?
tileParam.setSourceRegion(isSubsampling ?
new Rectangle(subsampleX*rect.x,
subsampleY*rect.y,
subsampleX*rect.width,
subsampleY*rect.height) :
rect);
try {
BufferedImage bi = reader.read(imageIndex, tileParam);
WritableRaster ras = bi.getRaster();
return ras.createWritableChild(0, 0,
ras.getWidth(), ras.getHeight(),
rect.x, rect.y,
null);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public WritableRaster copyData(WritableRaster raster) {
if (raster == null) {
return read(new Rectangle(0, 0, getWidth(), getHeight()));
} else {
Raster src = read(raster.getBounds());
raster.setRect(src);
return raster;
}
}
}