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      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.googlecode.mp4parser.AbstractBox;
     22 
     23 import java.nio.ByteBuffer;
     24 
     25 /**
     26  * Contains a reference to a track. The type of the box gives the kind of reference.
     27  */
     28 public class TrackReferenceTypeBox extends AbstractBox {
     29 
     30     public static final String TYPE1 = "hint";
     31     public static final String TYPE2 = "cdsc";
     32 
     33     private long[] trackIds;
     34 
     35     public TrackReferenceTypeBox(String type) {
     36         super(type);
     37     }
     38 
     39     public long[] getTrackIds() {
     40         return trackIds;
     41     }
     42 
     43     @Override
     44     public void _parseDetails(ByteBuffer content) {
     45         int count = (int) (content.remaining() / 4);
     46         trackIds = new long[count];
     47         for (int i = 0; i < count; i++) {
     48             trackIds[i] = IsoTypeReader.readUInt32(content);
     49         }
     50     }
     51 
     52     @Override
     53     protected void getContent(ByteBuffer byteBuffer) {
     54         for (long trackId : trackIds) {
     55             IsoTypeWriter.writeUInt32(byteBuffer, trackId);
     56         }
     57     }
     58 
     59 
     60     protected long getContentSize() {
     61         return trackIds.length * 4;
     62     }
     63 
     64     public String toString() {
     65         StringBuilder buffer = new StringBuilder();
     66         buffer.append("TrackReferenceTypeBox[type=").append(getType());
     67         for (int i = 0; i < trackIds.length; i++) {
     68             buffer.append(";trackId");
     69             buffer.append(i);
     70             buffer.append("=");
     71             buffer.append(trackIds[i]);
     72         }
     73         buffer.append("]");
     74         return buffer.toString();
     75     }
     76 }
     77