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An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2016 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* JPegImageDecoder.java
* ---------------
*/
package org.jpedal.parser.image.utils;
import java.awt.image.BufferedImage;
import org.jpedal.color.ColorSpaces;
import org.jpedal.color.DeviceCMYKColorSpace;
import org.jpedal.color.DeviceRGBColorSpace;
import org.jpedal.color.GenericColorSpace;
import org.jpedal.external.ErrorTracker;
import org.jpedal.parser.ParserOptions;
import org.jpedal.parser.image.data.ImageData;
import org.jpedal.utils.LogWriter;
/**
*
* @author markee
*/
public class JPegImageDecoder {
public static BufferedImage decode(final int w, final int h,
final GenericColorSpace decodeColorData, byte[] data, final ImageData imageData,
ErrorTracker errorTracker, ParserOptions parserOptions) {
GenericColorSpace jpegDecodeColorData=decodeColorData;
BufferedImage image=null;
//handle JPEGS
LogWriter.writeLog("JPeg Image " + w + "W * " + h + 'H' );
/*
try {
java.io.FileOutputStream a =new java.io.FileOutputStream("/Users/markee/Desktop/jpg.jpg");
a.write(data);
a.flush();
a.close();
} catch (Exception e) {
LogWriter.writeLog("Unable to save jpeg " + name);
} /**/
//if ICC with Alt RGB, use alternative first
boolean decodedOnAltColorspace=false;
if(decodeColorData.getID()==ColorSpaces.ICC){
//try first and catch any error
final int alt=decodeColorData.getAlternateColorSpace();
GenericColorSpace altDecodeColorData = null;
if(alt==ColorSpaces.DeviceRGB) {
altDecodeColorData = new DeviceRGBColorSpace();
} else if(alt==ColorSpaces.DeviceCMYK) {
altDecodeColorData = new DeviceCMYKColorSpace();
}
//try if any alt found
if(altDecodeColorData!=null){
try{
image=altDecodeColorData.JPEGToRGBImage(data, w, h,imageData.getpX() , imageData.getpY());
//if it returns image it worked flag and switch over
if(image!=null){
decodedOnAltColorspace=true;
jpegDecodeColorData=altDecodeColorData;
//flag if YCCK
if(jpegDecodeColorData.isImageYCCK()) {
parserOptions.hasYCCKimages = true;
}
}
}catch(final Exception e){
errorTracker.addPageFailureMessage("Unable to use alt colorspace to JPEG");
LogWriter.writeLog("Exception: " + e.getMessage());
if(image!=null){
image.flush();
}
image=null;
}
}
}
/*decode if not done above*/
if(!decodedOnAltColorspace){
//separation, renderer
try{
image=jpegDecodeColorData.JPEGToRGBImage(data, w, h, imageData.getpX(),imageData.getpY());
//flag if YCCK
if(jpegDecodeColorData.isImageYCCK()) {
parserOptions.hasYCCKimages = true;
}
//image=simulateOP(image);
}catch(final Exception e){
errorTracker.addPageFailureMessage("Problem converting to JPEG");
LogWriter.writeLog("Exception: " + e.getMessage());
image.flush();
image=null;
}
}
return image;
}
}