TiffImage


1   /*
2    * $Id: TiffImage.java,v 1.1.2.2 2003/02/25 13:38:22 jeremias Exp $
3    * ============================================================================
4    *                    The Apache Software License, Version 1.1
5    * ============================================================================
6    * 
7    * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
8    * 
9    * Redistribution and use in source and binary forms, with or without modifica-
10   * tion, are permitted provided that the following conditions are met:
11   * 
12   * 1. Redistributions of source code must retain the above copyright notice,
13   *    this list of conditions and the following disclaimer.
14   * 
15   * 2. Redistributions in binary form must reproduce the above copyright notice,
16   *    this list of conditions and the following disclaimer in the documentation
17   *    and/or other materials provided with the distribution.
18   * 
19   * 3. The end-user documentation included with the redistribution, if any, must
20   *    include the following acknowledgment: "This product includes software
21   *    developed by the Apache Software Foundation (http://www.apache.org/)."
22   *    Alternately, this acknowledgment may appear in the software itself, if
23   *    and wherever such third-party acknowledgments normally appear.
24   * 
25   * 4. The names "FOP" and "Apache Software Foundation" must not be used to
26   *    endorse or promote products derived from this software without prior
27   *    written permission. For written permission, please contact
28   *    apache@apache.org.
29   * 
30   * 5. Products derived from this software may not be called "Apache", nor may
31   *    "Apache" appear in their name, without prior written permission of the
32   *    Apache Software Foundation.
33   * 
34   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
35   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
36   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
37   * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
38   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
39   * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
40   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
41   * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
42   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
43   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
44   * ============================================================================
45   * 
46   * This software consists of voluntary contributions made by many individuals
47   * on behalf of the Apache Software Foundation and was originally created by
48   * James Tauber <jtauber@jtauber.com>. For more information on the Apache
49   * Software Foundation, please see <http://www.apache.org/>.
50   */ 
51  package org.apache.fop.image;
52  
53  // Java
54  import java.net.URL  ;
55  import java.io.InputStream  ;
56  
57  // Sun codec
58  import com.sun.media.jai.codec.FileCacheSeekableStream;
59  // FOP
60  import org.apache.fop.datatypes.ColorSpace;
61  import org.apache.fop.pdf.CCFFilter;
62  import org.apache.fop.pdf.DCTFilter;
63  import org.apache.fop.image.analyser.ImageReader;
64  
65  /**
66   * FopImage object using JAI for TIFF images.
67   * Allows to store certain compresssed TIFF images directly
68   * in the output stream. Does revert to the standard JAI
69   * image for anything it doesn't understand.
70   * @author Manuel MALL
71   * @see AbstractFopImage
72   * @see FopImage
73   */
74  public class TiffImage extends JAIImage {
75      public TiffImage(URL   href) throws FopImageException {
76          super(href);
77      }
78  
79      public TiffImage(URL   href,
80                      ImageReader imgReader) throws FopImageException {
81          super(href, imgReader);
82      }
83  
84      protected void loadImage() throws FopImageException {
85          try {
86              InputStream   inputStream = this.m_href.openStream();
87              /*
88               * BufferedInputStream inputStream = this.m_imageReader.getInputStream();
89               * inputStream.reset();
90               */
91              com.sun.media.jai.codec.FileCacheSeekableStream seekableInput =
92                  new FileCacheSeekableStream(inputStream);
93  
94              com.sun.media.jai.codec.TIFFDirectory ifd = new com.sun.media.jai.codec.TIFFDirectory(seekableInput, 0);
95              com.sun.media.jai.codec.TIFFField fld = null;
96  
97              this.m_height = (int)ifd.getFieldAsLong(0x101);
98              this.m_width = (int)ifd.getFieldAsLong(0x100);
99  
100             fld = ifd.getField(0x115); // The samples per pixel field
101             if (fld != null && fld.getAsInt(0) != 1) {
102                 throw new FopImageException("Error while loading image "
103                                             + this.m_href.toString() + " : "
104                                             + this.getClass() + " - "
105                                             + "unsupported samples per pixel value " + fld.getAsInt(0));
106             }
107 
108             this.m_bitsPerPixel = 1;
109             fld = ifd.getField(0x102); // The bits per sample field
110             if (fld != null) {
111                 this.m_bitsPerPixel = fld.getAsInt(0);
112             }
113 
114             this.m_colorSpace = new ColorSpace(ColorSpace.DEVICE_GRAY);
115             fld = ifd.getField(0x106); // The photometric interpretation field
116             if (fld != null) {
117                 if (fld.getAsInt(0) == 0) {
118                     // All is fine
119                 }
120                 else if (fld.getAsInt(0) == 2) {
121                     this.m_colorSpace = new ColorSpace(ColorSpace.DEVICE_RGB);
122                 }
123                 else {
124                     throw new FopImageException("Error while loading image "
125                                                 + this.m_href.toString() + " : "
126                                                 + this.getClass() + " - "
127                                                 + "unsupported photometric interpretation value " + fld.getAsInt(0));
128                 }
129             }
130 
131             this.m_isTransparent = false;
132 
133             int comp = 1;
134             fld = ifd.getField(0x103); // The compression field
135             if (fld != null) {
136                 comp = fld.getAsInt(0);
137             }
138             if (comp == 1) {
139             }
140             else if (comp == 3) {
141                 this.m_compressionType = new CCFFilter();
142                 this.m_compressionType.setApplied(true);
143             }
144             else if (comp == 4) {
145                 CCFFilter ccf = new CCFFilter();
146                 this.m_compressionType = ccf;
147                 this.m_compressionType.setApplied(true);
148                 ccf.setDecodeParms("<< /K -1 /Columns " + this.m_width + " >>");
149             }
150             else if (comp == 6) {
151                 this.m_compressionType = new DCTFilter();
152                 this.m_compressionType.setApplied(true);
153             }
154             else {
155                 throw new FopImageException("Error while loading image "
156                                             + this.m_href.toString() + " : "
157                                             + this.getClass() + " - "
158                                             + "unsupported compression value " + comp);
159             }
160 
161             fld = ifd.getField(0x116); // The rows per strip field
162             if (fld != null) {
163                 if (this.m_height != fld.getAsLong(0)) {
164                     throw new FopImageException("Error while loading image "
165                                                 + this.m_href.toString() + " : "
166                                                 + this.getClass() + " - "
167                                                 + "only single strip images supported ");
168                 }
169             }
170             long offset = ifd.getFieldAsLong(0x111);
171             long length = ifd.getFieldAsLong(0x117);
172 
173             byte[] readBuf = new byte[(int)length];
174             int bytes_read;
175 
176             inputStream.close();
177             inputStream = this.m_href.openStream();
178             inputStream.skip(offset);
179             bytes_read = inputStream.read(readBuf);
180             if (bytes_read != length) {
181                 throw new FopImageException("Error while loading image "
182                                             + this.m_href.toString() + " : "
183                                             + this.getClass() + " - "
184                                             + "length mismatch on read");
185             }
186 
187             this.m_bitmaps = readBuf;
188         } catch (FopImageException fie) {
189             org.apache.fop.messaging.MessageHandler.logln("Reverting to TIFF image handling through JAI: "
190                                                           + fie.getMessage());
191             this.m_compressionType = null;
192             super.loadImage();
193         } catch (Exception   ex) {
194             throw new FopImageException("Error while loading image "
195                                         + this.m_href.toString() + " : "
196                                         + ex.getClass() + " - "
197                                         + ex.getMessage());
198         }
199     }
200 
201 }
202 
203
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