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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 1997-2015 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
*
* ---------------
* MaskDecoder.java
* ---------------
*/
package org.jpedal.parser.image;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import org.jpedal.color.ColorSpaces;
import org.jpedal.color.GenericColorSpace;
import org.jpedal.io.ColorSpaceConvertor;
import org.jpedal.objects.GraphicsState;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.parser.image.data.ImageData;
import org.jpedal.render.DynamicVectorRenderer;
import org.jpedal.utils.LogWriter;
/**
*
* @author markee
*/
public class MaskDecoder {
/**
* apply the Mask to image data directly as a component on argb
*
* @param imageData
* @param decodeColorData
* @param newSMask
* @return
*/
static byte[] applyMask(final ImageData imageData,final GenericColorSpace decodeColorData, final PdfObject newMask, final PdfObject XObject, byte[] maskDataSream) {
int[] maskArray=newMask.getIntArray(PdfDictionary.Mask);
if(maskArray!=null){
maskArray=convertToRGB(maskArray,decodeColorData);
}
byte[] objectData=imageData.getObjectData();
/*
* Image data
*/
int w=imageData.getWidth();
int h=imageData.getHeight();
int d=imageData.getDepth();
if(objectData == null && d == 8){
objectData = new byte[w*h];
}
objectData = MaskDataDecoder.convertData(decodeColorData, objectData, w, h, imageData, d, 1, null);
XObject.setIntNumber(PdfDictionary.BitsPerComponent, 8);
if(maskArray!=null){
objectData=applyMaskArray(w, h, objectData,maskArray);
}else{
objectData=applyMaskStream(objectData,maskDataSream,imageData, newMask, XObject);
}
// img= ColorSpaceConvertor.createARGBImage( XObject.getInt(PdfDictionary.Width), XObject.getInt(PdfDictionary.Height), objectData);
//
// try{
// ImageIO.write(img, "PNG", new java.io.File("/Users/markee/Desktop/mixed.png"));
// }catch(Exception e){}
return objectData;
}
private static byte[] applyMaskArray(final int w, final int h, final byte[] objectData, final int[] maskArray) {
int pixels=w*h*4;
int rgbPtr=0;
byte[] combinedData=new byte[w*h*4];
final int rawDataSize=objectData.length;
float[] diff=new float[3];
if(maskArray!=null){
for(int a=0;a<3;a++){
diff[a]=maskArray[1]-maskArray[0];
if(diff[a]>1f){
diff[a] /= 255f;
}
}
}
try{
for(int i=0;i0){
combinedData[i+comp]=(byte) (objectData[rgbPtr]*diff[comp]);
}else{
combinedData[i+comp]=objectData[rgbPtr];
}
}
rgbPtr++;
}
//opacity
combinedData[i+3]=(byte)255;
}
}
}catch(Exception e){
e.printStackTrace();
}
return combinedData;
}
/**
* apply the Mask streamto image data directly as a component on argb
*
* @param imageData
* @param decodeColorData
* @param newSMask
* @return
*/
static byte[] applyMaskStream(byte[] objectData,byte[] maskData, final ImageData imageData,final PdfObject newMask, final PdfObject XObject) {
//objectData=imageData.getObjectData();
/*
* Image data
*/
int w=imageData.getWidth();
int h=imageData.getHeight();
//int d=imageData.getDepth();
/*
* mask data (ASSUME single component at moment)
*/
final int maskW=newMask.getInt(PdfDictionary.Width);
final int maskH=newMask.getInt(PdfDictionary.Height);
int maskD=newMask.getInt(PdfDictionary.BitsPerComponent);
final boolean isImageMask=newMask.getBoolean(PdfDictionary.ImageMask); //for example, see Case 22754
if(isImageMask){
maskD=1;
}
//needs to be 'normalised to 8 bit'
if(maskD!=8){
maskData=ColorSpaceConvertor.normaliseTo8Bit(maskD, maskW, maskH, maskData);
}
final float[] maskDecodeArray=newMask.getFloatArray(PdfDictionary.Decode);
if(maskDecodeArray!=null){
float diff=maskDecodeArray[1]-maskDecodeArray[0];
if(diff==-1){
for(int i=0;i=20 || imageData.getMode()!=ImageCommands.ID){ //not worth it for inline image
hasObjectBehind = current.hasObjectsBehind(gs.CTM);
}
//remove empty images in some files
boolean isBlank=false,keepNonTransparent=false;
if(imageMask && d==1 && decodeColorData.getID()==ColorSpaces.DeviceRGB && maskCol[0]==0 && maskCol[1]==0 && maskCol[2]==0){
//see if blank (assume true and disprove) and remove as totally see-through
isBlank=true;
for(int aa=0;aa1){
rawColorData[a] /= 255f;
}
decodeColorData.setColor(rawColorData, comps);
}
int foreground=decodeColorData.getColor().getRGB();
for(int a=0;a>16) & 0xFF);
rgbArray[1+(3*values)]=(byte) ((foreground>>8) & 0xFF);
rgbArray[2+(3*values)]=(byte) ((foreground) & 0xFF);
}
}
return rgbArray;
}
}