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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
*
* ---------------
* DeviceNColorSpace.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;
/**
* handle Device ColorSpace
*/
public class DeviceNColorSpace extends SeparationColorSpace {
private static final long serialVersionUID = -1372268945371555187L;
private final int[] lookup = new int[256];
public DeviceNColorSpace(final int componentCount, final ColorMapping colorMapper, final float[] domain, final GenericColorSpace altCS) {
setType(ColorSpaces.DeviceN);
this.componentCount = componentCount;
this.colorMapper = colorMapper;
this.domain = domain;
this.altCS = altCS;
}
/**
* set color (translate and set in alt colorspace)
*/
@Override
public void setColor(final String[] operand, final int opCount) {
final float[] values = new float[opCount];
for (int j = 0; j < opCount; j++) {
values[j] = Float.parseFloat(operand[j]);
}
setColor(values, opCount);
}
LimitedArray lim = new LimitedArray();
/**
* set color (translate and set in alt colorspace
*/
@Override
public void setColor(final float[] raw, final int opCount) {
if (opCount == 1) {
final int key = (int) (raw[0] * 255);
if (lookup[key] != 0) {
final int rawValue = lookup[key];
final int r = ((rawValue >> 16) & 255);
final int g = ((rawValue >> 8) & 255);
final int b = ((rawValue) & 255);
altCS.currentColor = new PdfColor(r, g, b);
} else {
final float[] operand = colorMapper.getOperandFloat(raw);
altCS.setColor(operand, operand.length);
lookup[key] = altCS.getColor().getRGB();
}
} else {
long key = 0;
for (final float n : raw) {
key = key << 8 | (int) (n * 255);
}
final Long lv = lim.get(key);
if (lv != null) {
final int rawValue = (int) (long) lv;
final int r = ((rawValue >> 16) & 255);
final int g = ((rawValue >> 8) & 255);
final int b = ((rawValue) & 255);
altCS.currentColor = new PdfColor(r, g, b);
} else {
final float[] operand = colorMapper.getOperandFloat(raw);
altCS.setColor(operand, operand.length);
lim.put(key, altCS.getColor().getRGB());
}
}
}
/**
* convert separation stream to RGB and return as an image
*/
@Override
public BufferedImage dataToRGB(final byte[] data, final int w, final int h) {
return createImage(w, h, data);
}
/**
* 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 = null;
Raster ras = JPEGDecoder.getRasterFromJPEG(data, "JPEG");
if (ras != null) {
ras = cleanupRaster(ras, pX, pY, componentCount);
final int w = ras.getWidth();
final int h = ras.getHeight();
final DataBufferByte rgb = (DataBufferByte) ras.getDataBuffer();
//convert the image
image = createImage(w, h, rgb.getData());
}
return image;
}
/**
* turn raw data into an image
*/
@Override
BufferedImage createImage(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 = rawData.length / componentCount;
final float[] values = new float[componentCount];
int j = 0, j2 = 0;
for (int i = 0; i < byteCount; i++) {
if (j >= bytesCount) {
break;
}
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;
}
public byte[] getRGBBytes(final byte[] rawData, final int w, final int h) {
final byte[] rgb = new byte[w * h * 3];
final int bytesCount = rawData.length;
final int byteCount = rawData.length / componentCount;
final float[] values = new float[componentCount];
int j = 0, j2 = 0;
for (int i = 0; i < byteCount; i++) {
if (j >= bytesCount) {
break;
}
for (int comp = 0; comp < componentCount; comp++) {
values[comp] = ((rawData[j] & 255) / 255f);
j++;
}
setColor(values, componentCount);
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;
}
return rgb;
}
}
