org.jpedal.parser.image.mask.MaskDataDecoder Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of OpenViewerFX Show documentation
Show all versions of OpenViewerFX Show documentation
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 1997-2017 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
*
* ---------------
* MaskDataDecoder.java
* ---------------
*/
package org.jpedal.parser.image.mask;
import com.idrsolutions.pdf.color.shading.BitReader;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;
import org.jpedal.color.ColorSpaces;
import org.jpedal.color.GenericColorSpace;
import org.jpedal.color.JPEGDecoder;
import org.jpedal.io.ColorSpaceConvertor;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.parser.image.ImageCommands;
import org.jpedal.parser.image.data.ImageData;
/**
*
* @author markee
*/
public class MaskDataDecoder {
/**
* apply the SMask to image data directly as a component on argb
*
* @param imageData
* @param decodeColorData
* @return
*/
static byte[] applyMask(final ImageData imageData, final GenericColorSpace decodeColorData, final PdfObject newMask, final PdfObject XObject, final byte[] maskDataSream) {
final int[] maskArray=XObject.getIntArray(PdfDictionary.Mask);
byte[] objectData=imageData.getObjectData();
/*
* Image data
*/
final int w=imageData.getWidth();
final int h=imageData.getHeight();
final int d=imageData.getDepth();
objectData = 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(maskDataSream,imageData, newMask, XObject);
}
//include Decode if present
final float[] maskDecodeArray=newMask.getFloatArray(PdfDictionary.Decode);
if(maskDecodeArray!=null) {
ImageCommands.applyDecodeArray(objectData, maskDecodeArray.length / 2, maskDecodeArray, ColorSpaces.DeviceRGB);
}
return objectData;
}
public static BufferedImage applyMaskArray(final ImageData imageData, final int[] maskArray){
final int bitDepth = imageData.getDepth();
// int negate = 8-bitDepth;
final int nComp = maskArray.length/2;
final int dim = imageData.getWidth()*imageData.getHeight();
final BufferedImage img = new BufferedImage(imageData.getWidth(), imageData.getHeight(), BufferedImage.TYPE_INT_ARGB);
final int[] output = ((DataBufferInt) img.getRaster().getDataBuffer()).getData();
final byte [] data = imageData.getObjectData();
int r,g,b,t;
boolean isMask;
switch(bitDepth){
case 1:
case 2:
case 4:
final BitReader reader = new BitReader(data, true);
for (int i = 0; i < dim; i++) {
if(nComp == 1){
t = reader.getPositive(bitDepth);
isMask = t >= maskArray[0] && t<=maskArray[1];
if(!isMask){
t ^= 0xff;
output[i] = (255 << 24) | (t << 16) | (t << 8) | t;
}
}else{ //assume number of components is 3 at the moment we can fix in future;
r = reader.getPositive(bitDepth);
g = reader.getPositive(bitDepth);
b = reader.getPositive(bitDepth);
isMask = r >= maskArray[0] && r<=maskArray[1]
&& g >= maskArray[2] && g<=maskArray[3]
&& b >= maskArray[4] && b<=maskArray[5];
if(!isMask){
r ^= 0xff;
g ^= 0xff;
b ^= 0xff;
output[i] = (255 << 24) | (r << 16) | (g << 8) | b;
}
}
}
break;
case 8:
int p = 0;
if(nComp ==1){
for (int i = 0; i < dim; i++) {
t = data[p++]&0xff;
isMask = t >= maskArray[0] && t<=maskArray[1];
if(!isMask){
output[i] = (255 << 24) | (t << 16) | (t << 8) | t;
}
}
}else if(nComp==3){
for (int i = 0; i < dim; i++) {
r = data[p++]&0xff;
g = data[p++]&0xff;
b = data[p++]&0xff;
isMask = r >= maskArray[0] && r<=maskArray[1]
&& g >= maskArray[2] && g<=maskArray[3]
&& b >= maskArray[4] && b<=maskArray[5];
if(!isMask){
output[i] = (255 << 24) | (r << 16) | (g << 8) | b;
}
}
}else if(nComp==4){
//does nothing in LGPL library
org.jpedal.JDeliHelper.processJPEG(dim, data, p, maskArray, output);
}
break;
}
return img;
}
static byte[] applySMask(byte[] maskData, final ImageData imageData,final GenericColorSpace decodeColorData, final PdfObject newSMask, final PdfObject XObject) {
byte[] objectData=imageData.getObjectData();
/*
* Image data
*/
final int w=imageData.getWidth();
final int h=imageData.getHeight();
final int d=imageData.getDepth();
/*
* Smask data (ASSUME single component at moment)
*/
final int maskW=newSMask.getInt(PdfDictionary.Width);
final int maskH=newSMask.getInt(PdfDictionary.Height);
final int maskD=newSMask.getInt(PdfDictionary.BitsPerComponent);
objectData = convertData(decodeColorData, objectData, w, h, imageData, d, maskD, maskData);
//needs to be 'normalised to 8 bit'
if(maskD!=8){
maskData=ColorSpaceConvertor.normaliseTo8Bit(maskD, maskW, maskH, maskData);
}
//add mask as a element so we now have argb
if(w==maskW && h==maskH){
//System.out.println("Same size");
objectData=buildUnscaledByteArray(w, h, objectData, maskData);
}else if(w15){
is4Bit=false;
break;
}
}
if(is4Bit){
for (int ii=0;ii1f){
diff /= 255f;
}
}
try{
for(int i=0;i0){
combinedData[i+comp]=(byte) (objectData[rgbPtr]*diff);
}else{
combinedData[i+comp]=objectData[rgbPtr];
}
}
rgbPtr++;
}
//opacity
combinedData[i+3]=(byte)255;
}
}catch(final Exception e){
e.printStackTrace();
}
return combinedData;
}
private static byte[] buildUnscaledByteArray(final int w, final int h, final byte[] objectData, final byte[] maskData) {
final int pixels=w*h*4;
int rgbPtr=0, aPtr=0;
final byte[] combinedData=new byte[w*h*4];
final int rawDataSize=objectData.length;
final int maskSize=maskData.length;
try{
for(int i=0;i