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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 1997-2017 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
*
* ---------------
* SeparationColorSpace.java
* ---------------
*/
package org.jpedal.color;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.Raster;
import java.io.ByteArrayInputStream;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import org.jpedal.JDeliHelper;
import org.jpedal.exception.PdfException;
import org.jpedal.io.ColorSpaceConvertor;
import org.jpedal.utils.LogWriter;
/**
* handle Separation ColorSpace and some DeviceN functions
*/
public class SeparationColorSpace extends GenericColorSpace {
protected GenericColorSpace altCS;
protected ColorMapping colorMapper;
float[] domain;
public SeparationColorSpace() {
}
public SeparationColorSpace(final ColorMapping colorMapper, final float[] domain, final GenericColorSpace altCS) {
this.colorMapper = colorMapper;
this.domain = domain;
this.altCS = altCS;
componentCount = 1;
setType(ColorSpaces.Separation);
}
/**
* private method to do the calculation
*/
private void setColor(final float value) {
//adjust size if needed
int elements = 1;
if (domain != null) {
elements = domain.length / 2;
}
final float[] values = new float[elements];
for (int j = 0; j < elements; j++) {
values[j] = value;
}
final float[] operand = colorMapper.getOperandFloat(values);
altCS.setColor(operand, operand.length);
}
/**
* set color (translate and set in alt colorspace
*/
@Override
public void setColor(final float[] operand, final int opCount) {
setColor(operand[0]);
}
/**
* set color (translate and set in alt colorspace
*/
@Override
public void setColor(final String[] operand, final int opCount) {
final float[] f = new float[1];
f[0] = Float.parseFloat(operand[0]);
setColor(f, 1);
}
@Override
public void invalidateCaching(final int color) {
super.invalidateCaching(color);
altCS.invalidateCaching(color);
altCS.setColor(new PdfColor(color));
}
/**
* convert data stream to srgb image
*/
@Override
public BufferedImage JPEGToRGBImage(final byte[] data, final int ww, final int hh, final int pX, final int pY) {
BufferedImage image;
ByteArrayInputStream in = null;
ImageReader iir = null;
ImageInputStream iin = null;
try {
//read the image data
in = new ByteArrayInputStream(data);
//suggestion from Carol
final Iterator iterator = ImageIO.getImageReadersByFormatName("JPEG");
while (iterator.hasNext()) {
final ImageReader o = iterator.next();
iir = o;
if (iir.canReadRaster()) {
break;
}
}
ImageIO.setUseCache(false);
iin = ImageIO.createImageInputStream((in));
iir.setInput(iin, true);
Raster ras = iir.readRaster(0, null);
ras = cleanupRaster(ras, pX, pY, 1); //note uses 1 not count
final int w = ras.getWidth();
final int h = ras.getHeight();
final DataBufferByte rgb = (DataBufferByte) ras.getDataBuffer();
final byte[] rawData = rgb.getData();
//special case
if (this.altCS.getID() == ColorSpaces.DeviceGray) {
for (int aa = 0; aa < rawData.length; aa++) {
rawData[aa] = (byte) (rawData[aa] ^ 255);
}
final int[] bands = {0};
image = new BufferedImage(w, h, BufferedImage.TYPE_BYTE_GRAY);
final Raster raster = Raster.createInterleavedRaster(new DataBufferByte(rawData, rawData.length), w, h, w, 1, bands, null);
image.setData(raster);
} else {
//convert the image in general case
image = createImage(w, h, rawData);
}
} catch (final Exception ee) {
image = null;
LogWriter.writeLog("Couldn't read JPEG, not even raster: " + ee);
}
try {
in.close();
iir.dispose();
iin.close();
} catch (final Exception ee) {
LogWriter.writeLog("Problem closing " + ee);
}
return image;
}
/**
* convert data stream to srgb image
*/
@Override
public BufferedImage JPEG2000ToRGBImage(final byte[] data, final int w, final int h, final int pX, final int pY, final int d) throws PdfException {
BufferedImage image = null;
try {
final byte[] rawData = JDeliHelper.getUnconvertedBytesFromJPEG2000(data);
if (rawData != null) {
IndexedColorMap = null; //make index null as we already processed
//convert the image
if (getID() == ColorSpaces.DeviceN) {
image = createImageN(w, h, rawData);
} else {
image = createImage(w, h, rawData);
}
}
} catch (final Exception ee) {
image = null;
LogWriter.writeLog("Exception in JPEG2000ToRGBImage: " + ee);
}
return image;
}
private BufferedImage createImageN(final int w, final int h, final byte[] rawData) {
final BufferedImage image;
final byte[] rgb = new byte[w * h * 3];
final int bytesCount = rawData.length;
//convert data to RGB format
final int byteCount;
if (IndexedColorMap != null) {
byteCount = rawData.length;
} else {
byteCount = rawData.length / componentCount;
}
final float[] values = new float[componentCount];
int j = 0, j2 = 0, index;
for (int i = 0; i < byteCount; i++) {
if (j >= bytesCount) {
break;
}
if (IndexedColorMap != null) {
index = (rawData[i] & 255) * componentCount;
for (int comp = 0; comp < componentCount; comp++) {
values[comp] = ((IndexedColorMap[index + comp] & 255) / 255f);
}
} else {
for (int comp = 0; comp < componentCount; comp++) {
values[comp] = ((rawData[j] & 255) / 255f);
j++;
}
}
setColor(values, componentCount);
//set values
final int foreground = altCS.currentColor.getRGB();
rgb[j2] = (byte) ((foreground >> 16) & 0xFF);
rgb[j2 + 1] = (byte) ((foreground >> 8) & 0xFF);
rgb[j2 + 2] = (byte) ((foreground) & 0xFF);
j2 += 3;
}
//create the RGB image
final int[] bands = {0, 1, 2};
image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
final DataBuffer dataBuf = new DataBufferByte(rgb, rgb.length);
final Raster raster = Raster.createInterleavedRaster(dataBuf, w, h, w * 3, 3, bands, null);
image.setData(raster);
return image;
}
/**
* convert separation stream to RGB and return as an image
*/
@Override
public BufferedImage dataToRGB(final byte[] data, final int w, final int h) {
BufferedImage image;
try {
//convert data
image = createImage(w, h, data);
} catch (final Exception ee) {
image = null;
LogWriter.writeLog("Couldn't convert Separation colorspace data: " + ee);
}
return image;
}
@Override
public byte[] dataToRGBByteArray(final byte[] rgb, final int w, final int h) {
final int pixelCount = 3 * w * h;
final byte[] imageData = new byte[pixelCount];
float[] operand;
final int inpLen = domain.length / 2;
if (inpLen == 1) {
float last = -1, cur;
int p = 0, pp = 0, tt;
for (int i = 0, ii = w * h; i < ii; i++) {
cur = (rgb[p++] & 0xff) / 255f;
if (last == cur) {
tt = altCS.getColor().getRGB();
} else {
operand = colorMapper.getOperandFloat(new float[]{cur});
altCS.setColor(operand, operand.length);
tt = altCS.getColor().getRGB();
}
imageData[pp++] = (byte) ((tt >> 16) & 0xff);
imageData[pp++] = (byte) ((tt >> 8) & 0xff);
imageData[pp++] = (byte) (tt & 0xff);
last = cur;
}
} else {
final float[] inputs = new float[inpLen];
int p = 0, pp = 0, tt;
for (int i = 0, ii = w * h; i < ii; i++) {
for (int j = 0; j < inpLen; j++) {
inputs[j] = (rgb[p++] & 0xff) / 255f;
}
operand = colorMapper.getOperandFloat(inputs);
altCS.setColor(operand, operand.length);
tt = altCS.getColor().getRGB();
imageData[pp++] = (byte) ((tt >> 16) & 0xff);
imageData[pp++] = (byte) ((tt >> 8) & 0xff);
imageData[pp++] = (byte) (tt & 0xff);
}
}
return imageData;
}
// /**
// * keeping this old case incase it is needed
// * convert separation stream to RGB and return as an image
// */
// @Override
// public byte[] dataToRGBByteArray2(final byte[] rgb, final int w, final int h) {
//
// final int pixelCount=3*w*h;
// final byte[] imageData=new byte[pixelCount];
//
// //convert data to RGB format
// int pixelReached=0;
//
// //cache table for speed
// final float[][] lookuptable=new float[3][256];
// for(int i=0;i<256;i++) {
// lookuptable[0][i]=-1;
// }
//
// for (final byte aRgb : rgb) {
//
// final int value = (aRgb & 255);
//
// if (lookuptable[0][value] == -1) {
// setColor(value / 255f);
//
// lookuptable[0][value] = ((Color) this.getColor()).getRed();
// lookuptable[1][value] = ((Color) this.getColor()).getGreen();
// lookuptable[2][value] = ((Color) this.getColor()).getBlue();
//
// }
//
// for (int comp = 0; comp < 3; comp++) {
// imageData[pixelReached] = (byte) lookuptable[comp][value];
// pixelReached++;
// }
// }
//
// return imageData;
// }
/**
* turn raw data into an image
*/
BufferedImage createImage(final int w, final int h, final byte[] rgb) {
final BufferedImage image;
final byte[] imageData = dataToRGBByteArray(rgb, w, h);
//create the RGB image
image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
final Raster raster = ColorSpaceConvertor.createInterleavedRaster(imageData, w, h);
image.setData(raster);
return image;
}
/**
* create rgb index for color conversion
*/
@Override
public byte[] convertIndexToRGB(final byte[] data) {
final byte[] newdata = new byte[3 * 256]; //converting to RGB so size known
final int inpLen = domain.length / 2;
final int palLen = data.length / inpLen;
final float[] inputs = new float[inpLen];
float[] operand;
int p = 0, pp = 0, tt;
for (int i = 0, ii = Math.min(256, palLen); i < ii; i++) {
for (int j = 0; j < inpLen; j++) {
inputs[j] = (data[p++] & 0xff) / 255f;
}
operand = colorMapper.getOperandFloat(inputs);
altCS.setColor(operand, operand.length);
tt = altCS.getColor().getRGB();
newdata[pp++] = (byte) ((tt >> 16) & 0xff);
newdata[pp++] = (byte) ((tt >> 8) & 0xff);
newdata[pp++] = (byte) (tt & 0xff);
}
return newdata;
}
/**
* get color
*/
@Override
public PdfPaint getColor() {
return altCS.getColor();
}
}
