001: /*
002: * $RCSfile: J2KRenderedImage.java,v $
003: *
004: *
005: * Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * - Redistribution of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * - Redistribution in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * Neither the name of Sun Microsystems, Inc. or the names of
020: * contributors may be used to endorse or promote products derived
021: * from this software without specific prior written permission.
022: *
023: * This software is provided "AS IS," without a warranty of any
024: * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
025: * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
026: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
027: * EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
028: * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
029: * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
030: * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
031: * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
032: * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
033: * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
034: * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
035: * POSSIBILITY OF SUCH DAMAGES.
036: *
037: * You acknowledge that this software is not designed or intended for
038: * use in the design, construction, operation or maintenance of any
039: * nuclear facility.
040: *
041: * $Revision: 1.2 $
042: * $Date: 2006/09/28 00:57:57 $
043: * $State: Exp $
044: */
045: package com.sun.media.imageioimpl.plugins.jpeg2000;
046:
047: import java.awt.Point;
048: import java.awt.Rectangle;
049: import java.awt.image.Raster;
050: import java.awt.image.WritableRaster;
051: import java.io.*;
052: import javax.imageio.stream.ImageInputStream;
053: import jj2000.j2k.codestream.reader.*;
054:
055: import com.sun.media.imageioimpl.common.SimpleRenderedImage;
056:
057: public class J2KRenderedImage extends SimpleRenderedImage {
058: private Raster currentTile;
059: private Point currentTileGrid;
060:
061: private J2KReadState readState;
062:
063: public J2KRenderedImage(ImageInputStream iis,
064: J2KImageReadParamJava param, J2KMetadata metadata,
065: J2KImageReader reader) throws IOException {
066: this (new J2KReadState(iis, param, metadata, reader));
067: }
068:
069: public J2KRenderedImage(ImageInputStream iis,
070: J2KImageReadParamJava param, J2KImageReader reader)
071: throws IOException {
072: this (new J2KReadState(iis, param, reader));
073: }
074:
075: public J2KRenderedImage(J2KReadState readState) {
076: this .readState = readState;
077:
078: HeaderDecoder hd = readState.getHeader();
079:
080: //determnined by destination
081: Rectangle destinationRegion = readState.getDestinationRegion();
082: width = destinationRegion.width;
083: height = destinationRegion.height;
084: minX = destinationRegion.x;
085: minY = destinationRegion.y;
086:
087: Rectangle tile0Rect = readState.getTile0Rect();
088: tileWidth = tile0Rect.width;
089: tileHeight = tile0Rect.height;
090: tileGridXOffset = tile0Rect.x;
091: tileGridYOffset = tile0Rect.y;
092:
093: sampleModel = readState.getSampleModel();
094: colorModel = readState.getColorModel();
095: }
096:
097: public synchronized Raster getTile(int tileX, int tileY) {
098: if (currentTile != null && currentTileGrid.x == tileX
099: && currentTileGrid.y == tileY)
100: return currentTile;
101:
102: if (tileX >= getNumXTiles() || tileY >= getNumYTiles())
103: throw new IllegalArgumentException(I18N
104: .getString("J2KReadState1"));
105:
106: try {
107: int x = tileXToX(tileX);
108: int y = tileYToY(tileY);
109: currentTile = Raster.createWritableRaster(sampleModel,
110: new Point(x, y));
111: currentTile = readState.getTile(tileX, tileY,
112: (WritableRaster) currentTile);
113: } catch (IOException e) {
114: throw new RuntimeException(e);
115: }
116:
117: if (currentTileGrid == null)
118: currentTileGrid = new Point(tileX, tileY);
119: else {
120: currentTileGrid.x = tileX;
121: currentTileGrid.y = tileY;
122: }
123:
124: return currentTile;
125: }
126: }
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