/*
* $Id: Jpeg2000.java 4065 2009-09-16 23:09:11Z psoares33 $
*
* Copyright 2007 by Paulo Soares.
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or 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 Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.lowagie.text;
import java.io.
IOException;
import java.io.
InputStream;
import java.net.
URL;
import com.lowagie.text.error_messages.
MessageLocalization;
/**
* An <CODE>Jpeg2000</CODE> is the representation of a graphic element (JPEG)
* that has to be inserted into the document
*
* @see Element
* @see Image
*/
public class
Jpeg2000 extends
Image {
// public static final membervariables
public static final int
JP2_JP = 0x6a502020;
public static final int
JP2_IHDR = 0x69686472;
public static final int
JPIP_JPIP = 0x6a706970;
public static final int
JP2_FTYP = 0x66747970;
public static final int
JP2_JP2H = 0x6a703268;
public static final int
JP2_COLR = 0x636f6c72;
public static final int
JP2_JP2C = 0x6a703263;
public static final int
JP2_URL = 0x75726c20;
public static final int
JP2_DBTL = 0x6474626c;
public static final int
JP2_BPCC = 0x62706363;
public static final int
JP2_JP2 = 0x6a703220;
InputStream inp;
int
boxLength;
int
boxType;
// Constructors
Jpeg2000(
Image image) {
super(
image);
}
/**
* Constructs a <CODE>Jpeg2000</CODE>-object, using an <VAR>url</VAR>.
*
* @param url the <CODE>URL</CODE> where the image can be found
* @throws BadElementException
* @throws IOException
*/
public
Jpeg2000(
URL url) throws
BadElementException,
IOException {
super(
url);
processParameters();
}
/**
* Constructs a <CODE>Jpeg2000</CODE>-object from memory.
*
* @param img the memory image
* @throws BadElementException
* @throws IOException
*/
public
Jpeg2000(byte[]
img) throws
BadElementException,
IOException {
super((
URL)null);
rawData =
img;
originalData =
img;
processParameters();
}
/**
* Constructs a <CODE>Jpeg2000</CODE>-object from memory.
*
* @param img the memory image.
* @param width the width you want the image to have
* @param height the height you want the image to have
* @throws BadElementException
* @throws IOException
*/
public
Jpeg2000(byte[]
img, float
width, float
height) throws
BadElementException,
IOException {
this(
img);
scaledWidth =
width;
scaledHeight =
height;
}
private int
cio_read(int
n) throws
IOException {
int
v = 0;
for (int
i =
n - 1;
i >= 0;
i--) {
v +=
inp.
read() << (
i << 3);
}
return
v;
}
public void
jp2_read_boxhdr() throws
IOException {
boxLength =
cio_read(4);
boxType =
cio_read(4);
if (
boxLength == 1) {
if (
cio_read(4) != 0) {
throw new
IOException(
MessageLocalization.
getComposedMessage("cannot.handle.box.sizes.higher.than.2.32"));
}
boxLength =
cio_read(4);
if (
boxLength == 0)
throw new
IOException(
MessageLocalization.
getComposedMessage("unsupported.box.size.eq.eq.0"));
}
else if (
boxLength == 0) {
throw new
IOException(
MessageLocalization.
getComposedMessage("unsupported.box.size.eq.eq.0"));
}
}
/**
* This method checks if the image is a valid JPEG and processes some parameters.
* @throws IOException
*/
private void
processParameters() throws
IOException {
type =
JPEG2000;
originalType =
ORIGINAL_JPEG2000;
inp = null;
try {
String errorID;
if (
rawData == null){
inp =
url.
openStream();
errorID =
url.
toString();
}
else{
inp = new java.io.
ByteArrayInputStream(
rawData);
errorID = "Byte array";
}
boxLength =
cio_read(4);
if (
boxLength == 0x0000000c) {
boxType =
cio_read(4);
if (
JP2_JP !=
boxType) {
throw new
IOException(
MessageLocalization.
getComposedMessage("expected.jp.marker"));
}
if (0x0d0a870a !=
cio_read(4)) {
throw new
IOException(
MessageLocalization.
getComposedMessage("error.with.jp.marker"));
}
jp2_read_boxhdr();
if (
JP2_FTYP !=
boxType) {
throw new
IOException(
MessageLocalization.
getComposedMessage("expected.ftyp.marker"));
}
Utilities.
skip(
inp,
boxLength - 8);
jp2_read_boxhdr();
do {
if (
JP2_JP2H !=
boxType) {
if (
boxType ==
JP2_JP2C) {
throw new
IOException(
MessageLocalization.
getComposedMessage("expected.jp2h.marker"));
}
Utilities.
skip(
inp,
boxLength - 8);
jp2_read_boxhdr();
}
} while(
JP2_JP2H !=
boxType);
jp2_read_boxhdr();
if (
JP2_IHDR !=
boxType) {
throw new
IOException(
MessageLocalization.
getComposedMessage("expected.ihdr.marker"));
}
scaledHeight =
cio_read(4);
setTop(
scaledHeight);
scaledWidth =
cio_read(4);
setRight(
scaledWidth);
bpc = -1;
}
else if (
boxLength == 0xff4fff51) {
Utilities.
skip(
inp, 4);
int
x1 =
cio_read(4);
int
y1 =
cio_read(4);
int
x0 =
cio_read(4);
int
y0 =
cio_read(4);
Utilities.
skip(
inp, 16);
colorspace =
cio_read(2);
bpc = 8;
scaledHeight =
y1 -
y0;
setTop(
scaledHeight);
scaledWidth =
x1 -
x0;
setRight(
scaledWidth);
}
else {
throw new
IOException(
MessageLocalization.
getComposedMessage("not.a.valid.jpeg2000.file"));
}
}
finally {
if (
inp != null) {
try{
inp.
close();}catch(
Exception e){}
inp = null;
}
}
plainWidth =
getWidth();
plainHeight =
getHeight();
}
}