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An Open Source JavaFX PDF Viewer
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/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2015 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


 *
 * ---------------
 * ID.java
 * ---------------
 */
package org.jpedal.parser.image;

import org.jpedal.color.ColorspaceFactory;
import org.jpedal.color.DeviceRGBColorSpace;
import org.jpedal.color.GenericColorSpace;
import org.jpedal.external.ErrorTracker;
import org.jpedal.external.ImageHandler;
import org.jpedal.io.*;
import org.jpedal.objects.PdfImageData;
import org.jpedal.objects.PdfPageData;
import org.jpedal.objects.raw.PdfArrayIterator;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.parser.PdfObjectCache;
import org.jpedal.parser.image.data.ImageData;

import java.awt.image.BufferedImage;

public class ID extends ImageDecoder {
    public ID(final int imageCount, final PdfObjectReader currentPdfFile, final ErrorTracker errorTracker, final ImageHandler customImageHandler, final ObjectStore objectStoreStreamRef, final PdfImageData pdfImages, final int formLevel, final PdfPageData pageData, final String imagesInFile, final String formName) {
        super(imageCount, currentPdfFile, errorTracker, customImageHandler, objectStoreStreamRef, pdfImages, formLevel, pageData, imagesInFile, formName);
    }


    @Override
    public int processImage(int dataPointer, final int startInlineStream, final byte[] stream, final int tokenNumber) throws Exception{

        /**
         * read Dictionary
         */
        final PdfObject XObject=new org.jpedal.objects.raw.XObject(PdfDictionary.ID);

        final IDObjectDecoder objectDecoder=new IDObjectDecoder(currentPdfFile.getObjectReader());
        objectDecoder.setEndPt(dataPointer-2);

        objectDecoder.readDictionaryAsObject(XObject,startInlineStream,stream);

        BufferedImage image =   null;

        final boolean inline_imageMask;

        //store pointer to current place in file
        int inline_start_pointer = dataPointer + 1;
        final int i_w;
        final int i_h;
        final int i_bpc;

        //find end of stream
        int i = inline_start_pointer;
        final int streamLength=stream.length;

        //find end
        while (true) {
            //look for end EI

            //handle Pdflib and xenos variety
            if ( streamLength-i>3 &&  stream[i + 1] == 69 && stream[i + 2] == 73 && ((stream[i+3] == 10 && (streamLength==i+4 || stream[i+4]==81))  || (stream[i+3]==32 && stream[i+4] == 10))){
                break;
            }
            //general case
            if ((streamLength-i>3)&&(stream[i] == 32 || stream[i] == 10 || stream[i] == 13 ||  (stream[i+3] == 32 && stream[i+4] == 'Q'))
                    && (stream[i + 1] == 69)
                    && (stream[i + 2] == 73)
                    && ( stream[i+3] == 32 || stream[i+3] == 10 || stream[i+3] == 13)) {
                break;
            }
            

            i++;

            if(i==streamLength) {
                break;
            }
        }
        
        if(renderImages || finalImagesExtracted || clippedImagesExtracted || rawImagesExtracted){

            //load the data
            //		generate the name including file name to make it unique
            final String image_name =parserOptions.getFileName()+ "-IN-" + tokenNumber;

            int endPtr=i;
            //hack for odd files
            if(i