1 /* 2 * Copyright 2009 castLabs GmbH, Berlin 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.fragment; 18 19 import com.coremedia.iso.IsoTypeReader; 20 import com.coremedia.iso.IsoTypeWriter; 21 import com.googlecode.mp4parser.AbstractFullBox; 22 23 import java.nio.ByteBuffer; 24 25 /** 26 * aligned(8) class MovieExtendsHeaderBox extends FullBox('mehd', version, 0) { 27 * if (version==1) { 28 * unsigned int(64) fragment_duration; 29 * } else { // version==0 30 * unsigned int(32) fragment_duration; 31 * } 32 * } 33 */ 34 public class MovieExtendsHeaderBox extends AbstractFullBox { 35 public static final String TYPE = "mehd"; 36 private long fragmentDuration; 37 38 public MovieExtendsHeaderBox() { 39 super(TYPE); 40 } 41 42 @Override 43 protected long getContentSize() { 44 return getVersion() == 1 ? 12 : 8; 45 } 46 47 @Override 48 public void _parseDetails(ByteBuffer content) { 49 parseVersionAndFlags(content); 50 fragmentDuration = getVersion() == 1 ? IsoTypeReader.readUInt64(content) : IsoTypeReader.readUInt32(content); 51 } 52 53 54 @Override 55 protected void getContent(ByteBuffer byteBuffer) { 56 writeVersionAndFlags(byteBuffer); 57 if (getVersion() == 1) { 58 IsoTypeWriter.writeUInt64(byteBuffer, fragmentDuration); 59 } else { 60 IsoTypeWriter.writeUInt32(byteBuffer, fragmentDuration); 61 } 62 } 63 64 public long getFragmentDuration() { 65 return fragmentDuration; 66 } 67 68 public void setFragmentDuration(long fragmentDuration) { 69 this.fragmentDuration = fragmentDuration; 70 } 71 } 72
