1 /* 2 * Copyright 2008 CoreMedia AG, Hamburg 3 * 4 * Licensed under the Apache License, Version 2.0 (the License); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an AS IS BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.coremedia.iso.boxes; 18 19 import com.coremedia.iso.IsoTypeReader; 20 import com.coremedia.iso.IsoTypeWriter; 21 import com.coremedia.iso.Utf8; 22 import com.googlecode.mp4parser.AbstractFullBox; 23 24 import java.nio.ByteBuffer; 25 26 /** 27 * List of keywords according to 3GPP 26.244. 28 */ 29 public class KeywordsBox extends AbstractFullBox { 30 public static final String TYPE = "kywd"; 31 32 private String language; 33 private String[] keywords; 34 KeywordsBox()35 public KeywordsBox() { 36 super(TYPE); 37 } 38 getLanguage()39 public String getLanguage() { 40 return language; 41 } 42 getKeywords()43 public String[] getKeywords() { 44 return keywords; 45 } 46 setLanguage(String language)47 public void setLanguage(String language) { 48 this.language = language; 49 } 50 setKeywords(String[] keywords)51 public void setKeywords(String[] keywords) { 52 this.keywords = keywords; 53 } 54 getContentSize()55 protected long getContentSize() { 56 long contentSize = 7; 57 for (String keyword : keywords) { 58 contentSize += 1 + Utf8.utf8StringLengthInBytes(keyword) + 1; 59 } 60 return contentSize; 61 } 62 63 @Override _parseDetails(ByteBuffer content)64 public void _parseDetails(ByteBuffer content) { 65 parseVersionAndFlags(content); 66 language = IsoTypeReader.readIso639(content); 67 int keywordCount = IsoTypeReader.readUInt8(content); 68 keywords = new String[keywordCount]; 69 for (int i = 0; i < keywordCount; i++) { 70 IsoTypeReader.readUInt8(content); 71 keywords[i] = IsoTypeReader.readString(content); 72 } 73 } 74 75 @Override getContent(ByteBuffer byteBuffer)76 protected void getContent(ByteBuffer byteBuffer) { 77 writeVersionAndFlags(byteBuffer); 78 IsoTypeWriter.writeIso639(byteBuffer, language); 79 IsoTypeWriter.writeUInt8(byteBuffer, keywords.length); 80 for (String keyword : keywords) { 81 IsoTypeWriter.writeUInt8(byteBuffer, Utf8.utf8StringLengthInBytes(keyword) + 1); 82 byteBuffer.put(Utf8.convert(keyword)); 83 } 84 } 85 toString()86 public String toString() { 87 StringBuffer buffer = new StringBuffer(); 88 buffer.append("KeywordsBox[language=").append(getLanguage()); 89 for (int i = 0; i < keywords.length; i++) { 90 buffer.append(";keyword").append(i).append("=").append(keywords[i]); 91 } 92 buffer.append("]"); 93 return buffer.toString(); 94 } 95 } 96