/*
* $Id: TiffImage.java,v 1.1.2.2 2003/02/25 13:38:22 jeremias Exp $
* ============================================================================
* The Apache Software License, Version 1.1
* ============================================================================
*
* Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by the Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "FOP" and "Apache Software Foundation" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache", nor may
* "Apache" appear in their name, without prior written permission of the
* Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
* DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ============================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the Apache Software Foundation and was originally created by
* James Tauber <jtauber@jtauber.com>. For more information on the Apache
* Software Foundation, please see <http://www.apache.org/>.
*/
package org.apache.fop.image;
// Java
import java.net.URL;
import java.io.InputStream;
// Sun codec
import com.sun.media.jai.codec.FileCacheSeekableStream;
// FOP
import org.apache.fop.datatypes.ColorSpace;
import org.apache.fop.pdf.CCFFilter;
import org.apache.fop.pdf.DCTFilter;
import org.apache.fop.image.analyser.ImageReader;
/**
* FopImage object using JAI for TIFF images.
* Allows to store certain compresssed TIFF images directly
* in the output stream. Does revert to the standard JAI
* image for anything it doesn't understand.
* @author Manuel MALL
* @see AbstractFopImage
* @see FopImage
*/
public class TiffImage extends JAIImage {
public TiffImage(URL href) throws FopImageException {
super(href);
}
public TiffImage(URL href,
ImageReader imgReader) throws FopImageException {
super(href, imgReader);
}
protected void loadImage() throws FopImageException {
try {
InputStream inputStream = this.m_href.openStream();
/*
* BufferedInputStream inputStream = this.m_imageReader.getInputStream();
* inputStream.reset();
*/
com.sun.media.jai.codec.FileCacheSeekableStream seekableInput =
new FileCacheSeekableStream(inputStream);
com.sun.media.jai.codec.TIFFDirectory ifd = new com.sun.media.jai.codec.TIFFDirectory(seekableInput, 0);
com.sun.media.jai.codec.TIFFField fld = null;
this.m_height = (int)ifd.getFieldAsLong(0x101);
this.m_width = (int)ifd.getFieldAsLong(0x100);
fld = ifd.getField(0x115); // The samples per pixel field
if (fld != null && fld.getAsInt(0) != 1) {
throw new FopImageException("Error while loading image "
+ this.m_href.toString() + " : "
+ this.getClass() + " - "
+ "unsupported samples per pixel value " + fld.getAsInt(0));
}
this.m_bitsPerPixel = 1;
fld = ifd.getField(0x102); // The bits per sample field
if (fld != null) {
this.m_bitsPerPixel = fld.getAsInt(0);
}
this.m_colorSpace = new ColorSpace(ColorSpace.DEVICE_GRAY);
fld = ifd.getField(0x106); // The photometric interpretation field
if (fld != null) {
if (fld.getAsInt(0) == 0) {
// All is fine
}
else if (fld.getAsInt(0) == 2) {
this.m_colorSpace = new ColorSpace(ColorSpace.DEVICE_RGB);
}
else {
throw new FopImageException("Error while loading image "
+ this.m_href.toString() + " : "
+ this.getClass() + " - "
+ "unsupported photometric interpretation value " + fld.getAsInt(0));
}
}
this.m_isTransparent = false;
int comp = 1;
fld = ifd.getField(0x103); // The compression field
if (fld != null) {
comp = fld.getAsInt(0);
}
if (comp == 1) {
}
else if (comp == 3) {
this.m_compressionType = new CCFFilter();
this.m_compressionType.setApplied(true);
}
else if (comp == 4) {
CCFFilter ccf = new CCFFilter();
this.m_compressionType = ccf;
this.m_compressionType.setApplied(true);
ccf.setDecodeParms("<< /K -1 /Columns " + this.m_width + " >>");
}
else if (comp == 6) {
this.m_compressionType = new DCTFilter();
this.m_compressionType.setApplied(true);
}
else {
throw new FopImageException("Error while loading image "
+ this.m_href.toString() + " : "
+ this.getClass() + " - "
+ "unsupported compression value " + comp);
}
fld = ifd.getField(0x116); // The rows per strip field
if (fld != null) {
if (this.m_height != fld.getAsLong(0)) {
throw new FopImageException("Error while loading image "
+ this.m_href.toString() + " : "
+ this.getClass() + " - "
+ "only single strip images supported ");
}
}
long offset = ifd.getFieldAsLong(0x111);
long length = ifd.getFieldAsLong(0x117);
byte[] readBuf = new byte[(int)length];
int bytes_read;
inputStream.close();
inputStream = this.m_href.openStream();
inputStream.skip(offset);
bytes_read = inputStream.read(readBuf);
if (bytes_read != length) {
throw new FopImageException("Error while loading image "
+ this.m_href.toString() + " : "
+ this.getClass() + " - "
+ "length mismatch on read");
}
this.m_bitmaps = readBuf;
} catch (FopImageException fie) {
org.apache.fop.messaging.MessageHandler.logln("Reverting to TIFF image handling through JAI: "
+ fie.getMessage());
this.m_compressionType = null;
super.loadImage();
} catch (Exception ex) {
throw new FopImageException("Error while loading image "
+ this.m_href.toString() + " : "
+ ex.getClass() + " - "
+ ex.getMessage());
}
}
}