/*
* $Id: PdfImage.java 4784 2011-03-15 08:33:00Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2011 1T3XT BVBA
* 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 1T3XT,
* 1T3XT 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: [email protected]
*/
package com.itextpdf.text.pdf;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.Image;
/**
* <CODE>PdfImage</CODE> is a <CODE>PdfStream</CODE> containing an image-<CODE>Dictionary</CODE> and -stream.
*/
public class PdfImage extends PdfStream {
static final int TRANSFERSIZE = 4096;
// membervariables
/** This is the <CODE>PdfName</CODE> of the image. */
protected PdfName name = null;
// constructor
/**
* Constructs a <CODE>PdfImage</CODE>-object.
*
* @param image the <CODE>Image</CODE>-object
* @param name the <CODE>PdfName</CODE> for this image
* @throws BadPdfFormatException on error
*/
public PdfImage(Image image, String name, PdfIndirectReference maskRef) throws BadPdfFormatException {
super();
if (name == null)
generateImgResName( image );
else
this.name = new PdfName(name);
put(PdfName.TYPE, PdfName.XOBJECT);
put(PdfName.SUBTYPE, PdfName.IMAGE);
put(PdfName.WIDTH, new PdfNumber(image.getWidth()));
put(PdfName.HEIGHT, new PdfNumber(image.getHeight()));
if (image.getLayer() != null)
put(PdfName.OC, image.getLayer().getRef());
if (image.isMask() && (image.getBpc() == 1 || image.getBpc() > 0xff))
put(PdfName.IMAGEMASK, PdfBoolean.PDFTRUE);
if (maskRef != null) {
if (image.isSmask())
put(PdfName.SMASK, maskRef);
else
put(PdfName.MASK, maskRef);
}
if (image.isMask() && image.isInverted())
put(PdfName.DECODE, new PdfLiteral("[1 0]"));
if (image.isInterpolation())
put(PdfName.INTERPOLATE, PdfBoolean.PDFTRUE);
InputStream is = null;
try {
// Raw Image data
if (image.isImgRaw()) {
// will also have the CCITT parameters
int colorspace = image.getColorspace();
int transparency[] = image.getTransparency();
if (transparency != null && !image.isMask() && maskRef == null) {
StringBuilder s = new StringBuilder("[");
for (int k = 0; k < transparency.length; ++k)
s.append(transparency[k]).append(" ");
s.append("]");
put(PdfName.MASK, new PdfLiteral(s.toString()));
}
bytes = image.getRawData();
put(PdfName.LENGTH, new PdfNumber(bytes.length));
int bpc = image.getBpc();
if (bpc > 0xff) {
if (!image.isMask())
put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
put(PdfName.BITSPERCOMPONENT, new PdfNumber(1));
put(PdfName.FILTER, PdfName.CCITTFAXDECODE);
int k = bpc - Image.CCITTG3_1D;
PdfDictionary decodeparms = new PdfDictionary();
if (k != 0)
decodeparms.put(PdfName.K, new PdfNumber(k));
if ((colorspace & Image.CCITT_BLACKIS1) != 0)
decodeparms.put(PdfName.BLACKIS1, PdfBoolean.PDFTRUE);
if ((colorspace & Image.CCITT_ENCODEDBYTEALIGN) != 0)
decodeparms.put(PdfName.ENCODEDBYTEALIGN, PdfBoolean.PDFTRUE);
if ((colorspace & Image.CCITT_ENDOFLINE) != 0)
decodeparms.put(PdfName.ENDOFLINE, PdfBoolean.PDFTRUE);
if ((colorspace & Image.CCITT_ENDOFBLOCK) != 0)
decodeparms.put(PdfName.ENDOFBLOCK, PdfBoolean.PDFFALSE);
decodeparms.put(PdfName.COLUMNS, new PdfNumber(image.getWidth()));
decodeparms.put(PdfName.ROWS, new PdfNumber(image.getHeight()));
put(PdfName.DECODEPARMS, decodeparms);
}
else {
switch(colorspace) {
case 1:
put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
if (image.isInverted())
put(PdfName.DECODE, new PdfLiteral("[1 0]"));
break;
case 3:
put(PdfName.COLORSPACE, PdfName.DEVICERGB);
if (image.isInverted())
put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0]"));
break;
case 4:
default:
put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
if (image.isInverted())
put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0 1 0]"));
}
PdfDictionary additional = image.getAdditional();
if (additional != null)
putAll(additional);
if (image.isMask() && (image.getBpc() == 1 || image.getBpc() > 8))
remove(PdfName.COLORSPACE);
put(PdfName.BITSPERCOMPONENT, new PdfNumber(image.getBpc()));
if (image.isDeflated())
put(PdfName.FILTER, PdfName.FLATEDECODE);
else {
flateCompress(image.getCompressionLevel());
}
}
return;
}
// GIF, JPEG or PNG
String errorID;
if (image.getRawData() == null){
is = image.getUrl().openStream();
errorID = image.getUrl().toString();
}
else{
is = new java.io.ByteArrayInputStream(image.getRawData());
errorID = "Byte array";
}
switch(image.type()) {
case Image.JPEG:
put(PdfName.FILTER, PdfName.DCTDECODE);
switch(image.getColorspace()) {
case 1:
put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
break;
case 3:
put(PdfName.COLORSPACE, PdfName.DEVICERGB);
break;
default:
put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
if (image.isInverted()) {
put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0 1 0]"));
}
}
put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
if (image.getRawData() != null){
bytes = image.getRawData();
put(PdfName.LENGTH, new PdfNumber(bytes.length));
return;
}
streamBytes = new ByteArrayOutputStream();
transferBytes(is, streamBytes, -1);
break;
case Image.JPEG2000:
put(PdfName.FILTER, PdfName.JPXDECODE);
if (image.getColorspace() > 0) {
switch(image.getColorspace()) {
case 1:
put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
break;
case 3:
put(PdfName.COLORSPACE, PdfName.DEVICERGB);
break;
default:
put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
}
put(PdfName.BITSPERCOMPONENT, new PdfNumber(image.getBpc()));
}
if (image.getRawData() != null){
bytes = image.getRawData();
put(PdfName.LENGTH, new PdfNumber(bytes.length));
return;
}
streamBytes = new ByteArrayOutputStream();
transferBytes(is, streamBytes, -1);
break;
case Image.JBIG2:
put(PdfName.FILTER, PdfName.JBIG2DECODE);
put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
put(PdfName.BITSPERCOMPONENT, new PdfNumber(1));
if (image.getRawData() != null){
bytes = image.getRawData();
put(PdfName.LENGTH, new PdfNumber(bytes.length));
return;
}
streamBytes = new ByteArrayOutputStream();
transferBytes(is, streamBytes, -1);
break;
default:
throw new BadPdfFormatException(MessageLocalization.getComposedMessage("1.is.an.unknown.image.format", errorID));
}
put(PdfName.LENGTH, new PdfNumber(streamBytes.size()));
}
catch(IOException ioe) {
throw new BadPdfFormatException(ioe.getMessage());
}
finally {
if (is != null) {
try{
is.close();
}
catch (Exception ee) {
// empty on purpose
}
}
}
}
/**
* Returns the <CODE>PdfName</CODE> of the image.
*
* @return the name
*/
public PdfName name() {
return name;
}
static void transferBytes(InputStream in, OutputStream out, int len) throws IOException {
byte buffer[] = new byte[TRANSFERSIZE];
if (len < 0)
len = 0x7fff0000;
int size;
while (len != 0) {
size = in.read(buffer, 0, Math.min(len, TRANSFERSIZE));
if (size < 0)
return;
out.write(buffer, 0, size);
len -= size;
}
}
protected void importAll(PdfImage dup) {
name = dup.name;
compressed = dup.compressed;
compressionLevel = dup.compressionLevel;
streamBytes = dup.streamBytes;
bytes = dup.bytes;
hashMap = dup.hashMap;
}
/**
* Called when no resource name is provided in our constructor. This generates a
* name that is required to be unique within a given resource dictionary.
* @since 5.0.1
*/
private void generateImgResName( Image img ) {
name = new PdfName( "img" + Long.toHexString( img.getMySerialId() ) );
}
}
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