/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: sales@itextpdf.com
*/
package com.itextpdf.text;
import java.net.URL;
import java.security.MessageDigest;
/**
* Support for JBIG2 images.
* @since 2.1.5
*/
public class ImgJBIG2 extends Image {
/** JBIG2 globals */
private byte[] global;
/** A unique hash */
private byte[] globalHash;
/**
* Copy contstructor.
* @param image another Image
*/
ImgJBIG2(Image image) {
super(image);
}
/**
* Empty constructor.
*/
public ImgJBIG2() {
super((Image) null);
}
/**
* Actual constructor for ImgJBIG2 images.
* @param width the width of the image
* @param height the height of the image
* @param data the raw image data
* @param globals JBIG2 globals
*/
public ImgJBIG2(int width, int height, byte[] data, byte[] globals) {
super((URL) null);
type = JBIG2;
originalType = ORIGINAL_JBIG2;
scaledHeight = height;
setTop(scaledHeight);
scaledWidth = width;
setRight(scaledWidth);
bpc = 1;
colorspace = 1;
rawData = data;
plainWidth = getWidth();
plainHeight = getHeight();
if ( globals != null ) {
this.global = globals;
MessageDigest md;
try {
md = MessageDigest.getInstance("MD5");
md.update(this.global);
this.globalHash = md.digest();
} catch (Exception e) {
//ignore
}
}
}
/**
* Getter for the JBIG2 global data.
* @return an array of bytes
*/
public byte[] getGlobalBytes() {
return this.global;
}
/**
* Getter for the unique hash.
* @return an array of bytes
*/
public byte[] getGlobalHash() {
return this.globalHash;
}
}