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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: RawImageReader.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: 1.1 $
* $Date: 2005/02/11 05:01:42 $
* $State: Exp $
*/
package com.github.jaiimageio.impl.plugins.raw;
import java.awt.Point;
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.ArrayList;
import java.util.Hashtable;
import java.util.Iterator;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.spi.ImageReaderSpi;
import com.github.jaiimageio.stream.RawImageInputStream;
/** This class is the Java Image IO plugin reader for Raw images.
* It may subsample the image, clip the image, select sub-bands,
* and shift the decoded image origin if the proper decoding parameter
* are set in the provided PNMImageReadParam.
*/
public class RawImageReader extends ImageReader {
/** The input stream where reads from */
private RawImageInputStream iis = null;
/** Wrapper for the protected method computeRegions. So it
* can be access from the classes which are not in ImageReader
* hierachy.
*/
public static void computeRegionsWrapper(ImageReadParam param,
int srcWidth,
int srcHeight,
BufferedImage image,
Rectangle srcRegion,
Rectangle destRegion) {
computeRegions(param, srcWidth, srcHeight,
image, srcRegion, destRegion) ;
}
/** Constructs RawImageReader from the provided
* ImageReaderSpi.
*/
public RawImageReader(ImageReaderSpi originator) {
super(originator);
}
/** Overrides the method defined in the superclass.
* @throws ClassCastException If the provided input is not
* an instance of RawImageInputImage
*/
public void setInput(Object input,
boolean seekForwardOnly,
boolean ignoreMetadata) {
super.setInput(input, seekForwardOnly, ignoreMetadata);
iis = (RawImageInputStream) input; // Always works
}
/** Overrides the method defined in the superclass. */
public int getNumImages(boolean allowSearch) throws IOException {
return iis.getNumImages();
}
public int getWidth(int imageIndex) throws IOException {
checkIndex(imageIndex);
return iis.getImageDimension(imageIndex).width;
}
public int getHeight(int imageIndex) throws IOException {
checkIndex(imageIndex);
return iis.getImageDimension(imageIndex).height;
}
public int getTileWidth(int imageIndex) throws IOException {
checkIndex(imageIndex);
return iis.getImageType().getSampleModel().getWidth();
}
public int getTileHeight(int imageIndex) throws IOException {
checkIndex(imageIndex);
return iis.getImageType().getSampleModel().getHeight();
}
private void checkIndex(int imageIndex) throws IOException {
if (imageIndex <0 || imageIndex >= getNumImages(true)) {
throw new IndexOutOfBoundsException(I18N.getString("RawImageReader0"));
}
}
public Iterator getImageTypes(int imageIndex)
throws IOException {
checkIndex(imageIndex);
ArrayList list = new ArrayList(1);
list.add(iis.getImageType());
return list.iterator();
}
public ImageReadParam getDefaultReadParam() {
return new ImageReadParam();
}
public IIOMetadata getImageMetadata(int imageIndex)
throws IOException {
return null;
}
public IIOMetadata getStreamMetadata() throws IOException {
return null;
}
public boolean isRandomAccessEasy(int imageIndex) throws IOException {
checkIndex(imageIndex);
return true;
}
public BufferedImage read(int imageIndex, ImageReadParam param)
throws IOException {
if (param == null)
param = getDefaultReadParam();
checkIndex(imageIndex);
clearAbortRequest();
processImageStarted(imageIndex);
BufferedImage bi = param.getDestination();
RawRenderedImage image =
new RawRenderedImage(iis, this, param, imageIndex);
Point offset = param.getDestinationOffset();
WritableRaster raster;
if (bi == null) {
ColorModel colorModel = image.getColorModel();
SampleModel sampleModel = image.getSampleModel();
// If the destination type is specified, use the color model of it.
ImageTypeSpecifier type = param.getDestinationType();
if (type != null)
colorModel = type.getColorModel();
raster = Raster.createWritableRaster(
sampleModel.createCompatibleSampleModel(image.getMinX()+
image.getWidth(),
image.getMinY() +
image.getHeight()),
new Point(0, 0));
bi = new BufferedImage(colorModel,
raster,
colorModel != null ?
colorModel.isAlphaPremultiplied() : false,
new Hashtable());
} else {
raster = bi.getWritableTile(0, 0);
}
image.setDestImage(bi);
image.readAsRaster(raster);
image.clearDestImage();
if (abortRequested())
processReadAborted();
else
processImageComplete();
return bi;
}
public RenderedImage readAsRenderedImage(int imageIndex,
ImageReadParam param)
throws java.io.IOException {
if (param == null)
param = getDefaultReadParam();
checkIndex(imageIndex);
clearAbortRequest();
processImageStarted(0);
RenderedImage image =
new RawRenderedImage(iis, this, param, imageIndex);
if (abortRequested())
processReadAborted();
else
processImageComplete();
return image;
}
public Raster readRaster(int imageIndex,
ImageReadParam param) throws IOException {
BufferedImage bi = read(imageIndex, param);
return bi.getData();
}
public boolean canReadRaster() {
return true;
}
public void reset() {
super.reset();
iis = null;
}
/** Wrapper for the protected method processImageUpdate
* So it can be access from the classes which are not in
* ImageReader hierachy.
*/
public void processImageUpdateWrapper(BufferedImage theImage,
int minX, int minY,
int width, int height,
int periodX, int periodY,
int[] bands) {
processImageUpdate(theImage,
minX, minY,
width, height,
periodX, periodY,
bands);
}
/** Wrapper for the protected method processImageProgress
* So it can be access from the classes which are not in
* ImageReader hierachy.
*/
public void processImageProgressWrapper(float percentageDone) {
processImageProgress(percentageDone);
}
/** This method wraps the protected method abortRequested
* to allow the abortions be monitored by J2KReadState.
*/
public boolean getAbortRequest() {
return abortRequested();
}
}