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 20 import com.googlecode.mp4parser.AbstractBox; 21 import com.googlecode.mp4parser.AbstractContainerBox; 22 23 import java.util.List; 24 25 /** 26 * The metadata for a presentation is stored in the single Movie Box which occurs at the top-level of a file. 27 * Normally this box is close to the beginning or end of the file, though this is not required. 28 */ 29 public class MovieBox extends AbstractContainerBox { 30 public static final String TYPE = "moov"; 31 32 public MovieBox() { 33 super(TYPE); 34 } 35 36 public int getTrackCount() { 37 return getBoxes(TrackBox.class).size(); 38 } 39 40 41 /** 42 * Returns the track numbers associated with this <code>MovieBox</code>. 43 * 44 * @return the tracknumbers (IDs) of the tracks in their order of appearance in the file 45 */ 46 public long[] getTrackNumbers() { 47 48 List<TrackBox> trackBoxes = this.getBoxes(TrackBox.class); 49 long[] trackNumbers = new long[trackBoxes.size()]; 50 for (int trackCounter = 0; trackCounter < trackBoxes.size(); trackCounter++) { 51 AbstractBox trackBoxe = trackBoxes.get(trackCounter); 52 TrackBox trackBox = (TrackBox) trackBoxe; 53 trackNumbers[trackCounter] = trackBox.getTrackHeaderBox().getTrackId(); 54 } 55 return trackNumbers; 56 } 57 58 public MovieHeaderBox getMovieHeaderBox() { 59 for (Box box : boxes) { 60 if (box instanceof MovieHeaderBox) { 61 return (MovieHeaderBox) box; 62 } 63 } 64 return null; 65 } 66 67 } 68
