| /* |
| * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package javax.imageio.plugins.tiff; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import javax.imageio.ImageReadParam; |
| |
| /** |
| * A subclass of {@link ImageReadParam} allowing control over |
| * the TIFF reading process. |
| * |
| * <p> Because TIFF is an extensible format, the reader requires |
| * information about any tags used by TIFF extensions in order to emit |
| * meaningful metadata. Also, TIFF extensions may define new |
| * compression types. Both types of information about extensions may |
| * be provided by this interface. |
| * |
| * <p> Additional TIFF tags must be organized into |
| * {@code TIFFTagSet}s. A {@code TIFFTagSet} may be |
| * provided to the reader by means of the |
| * {@code addAllowedTagSet} method. By default, the tag sets |
| * {@code BaselineTIFFTagSet}, {@code FaxTIFFTagSet}, |
| * {@code ExifParentTIFFTagSet}, and {@code GeoTIFFTagSet} |
| * are included. |
| * |
| * <p> Forcing reading of fields corresponding to {@code TIFFTag}s |
| * not in any of the allowed {@code TIFFTagSet}s may be effected via |
| * {@link #setReadUnknownTags setReadUnknownTags}. |
| * |
| * @since 9 |
| */ |
| public final class TIFFImageReadParam extends ImageReadParam { |
| |
| private final List<TIFFTagSet> allowedTagSets = |
| new ArrayList<TIFFTagSet>(4); |
| |
| private boolean readUnknownTags = false; |
| |
| /** |
| * Constructs a {@code TIFFImageReadParam}. Tags defined by |
| * the {@code TIFFTagSet}s {@code BaselineTIFFTagSet}, |
| * {@code FaxTIFFTagSet}, {@code ExifParentTIFFTagSet}, and |
| * {@code GeoTIFFTagSet} will be supported. |
| * |
| * @see BaselineTIFFTagSet |
| * @see FaxTIFFTagSet |
| * @see ExifParentTIFFTagSet |
| * @see GeoTIFFTagSet |
| */ |
| public TIFFImageReadParam() { |
| addAllowedTagSet(BaselineTIFFTagSet.getInstance()); |
| addAllowedTagSet(FaxTIFFTagSet.getInstance()); |
| addAllowedTagSet(ExifParentTIFFTagSet.getInstance()); |
| addAllowedTagSet(GeoTIFFTagSet.getInstance()); |
| } |
| |
| /** |
| * Adds a {@code TIFFTagSet} object to the list of allowed |
| * tag sets. Attempting to add a duplicate object to the list |
| * has no effect. |
| * |
| * @param tagSet a {@code TIFFTagSet}. |
| * |
| * @throws IllegalArgumentException if {@code tagSet} is |
| * {@code null}. |
| */ |
| public void addAllowedTagSet(TIFFTagSet tagSet) { |
| if (tagSet == null) { |
| throw new IllegalArgumentException("tagSet == null!"); |
| } |
| if (!allowedTagSets.contains(tagSet)) { |
| allowedTagSets.add(tagSet); |
| } |
| } |
| |
| /** |
| * Removes a {@code TIFFTagSet} object from the list of |
| * allowed tag sets. Removal is based on the {@code equals} |
| * method of the {@code TIFFTagSet}, which is normally |
| * defined as reference equality. |
| * |
| * @param tagSet a {@code TIFFTagSet}. |
| * |
| * @throws IllegalArgumentException if {@code tagSet} is |
| * {@code null}. |
| */ |
| public void removeAllowedTagSet(TIFFTagSet tagSet) { |
| if (tagSet == null) { |
| throw new IllegalArgumentException("tagSet == null!"); |
| } |
| allowedTagSets.remove(tagSet); |
| } |
| |
| /** |
| * Returns a {@code List} containing the allowed |
| * {@code TIFFTagSet} objects. |
| * |
| * @return a {@code List} of {@code TIFFTagSet}s. |
| */ |
| public List<TIFFTagSet> getAllowedTagSets() { |
| return allowedTagSets; |
| } |
| |
| /** |
| * Set whether to read fields corresponding to {@code TIFFTag}s not in |
| * the allowed {@code TIFFTagSet}s. The default setting is {@code false}. |
| * If the TIFF {@code ImageReader} is ignoring metadata, then a setting |
| * of {@code true} is overridden as all metadata are ignored except those |
| * essential to reading the image itself. |
| * |
| * @param readUnknownTags Whether to read fields of unrecognized tags |
| */ |
| public void setReadUnknownTags(boolean readUnknownTags) { |
| this.readUnknownTags = readUnknownTags; |
| } |
| |
| /** |
| * Retrieve the setting of whether to read fields corresponding to unknown |
| * {@code TIFFTag}s. |
| * |
| * @return Whether to read fields of unrecognized tags |
| */ |
| public boolean getReadUnknownTags() { |
| return readUnknownTags; |
| } |
| } |