001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.documentlibrary.util;
016    
017    import com.liferay.portal.kernel.repository.model.FileVersion;
018    
019    import java.io.InputStream;
020    
021    import java.util.Set;
022    
023    /**
024     * @author Sergio González
025     */
026    public interface AudioProcessor {
027    
028            public static final String PREVIEW_TYPE = "mp3";
029    
030            public void generateAudio(FileVersion fileVersion) throws Exception;
031    
032            public Set<String> getAudioMimeTypes();
033    
034            public InputStream getPreviewAsStream(FileVersion fileVersion)
035                    throws Exception;
036    
037            public long getPreviewFileSize(FileVersion fileVersion)
038                    throws Exception;
039    
040            public boolean hasAudio(FileVersion fileVersion);
041    
042            public boolean isAudioSupported(FileVersion fileVersion);
043    
044            public boolean isAudioSupported(String mimeType);
045    
046            public boolean isSupported(String mimeType);
047    
048            public void trigger(FileVersion fileVersion);
049    
050    }