| /* |
| * Copyright 2008 CoreMedia AG, Hamburg |
| * |
| * Licensed under the Apache License, Version 2.0 (the License); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an AS IS BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.coremedia.iso.boxes; |
| |
| |
| import com.coremedia.iso.IsoTypeWriter; |
| import com.googlecode.mp4parser.FullContainerBox; |
| |
| import java.nio.ByteBuffer; |
| |
| /** |
| * The data reference object contains a table of data references (normally URLs) that declare the location(s) of |
| * the media data used within the presentation. The data reference index in the sample description ties entries in |
| * this table to the samples in the track. A track may be split over several sources in this way. |
| * If the flag is set indicating that the data is in the same file as this box, then no string (not even an empty one) |
| * shall be supplied in the entry field. |
| * The DataEntryBox within the DataReferenceBox shall be either a DataEntryUrnBox or a DataEntryUrlBox. |
| * |
| * @see com.coremedia.iso.boxes.DataEntryUrlBox |
| * @see com.coremedia.iso.boxes.DataEntryUrnBox |
| */ |
| public class DataReferenceBox extends FullContainerBox { |
| |
| public static final String TYPE = "dref"; |
| |
| public DataReferenceBox() { |
| super(TYPE); |
| |
| } |
| |
| @Override |
| protected long getContentSize() { |
| return super.getContentSize() + 4; |
| } |
| |
| @Override |
| public void _parseDetails(ByteBuffer content) { |
| parseVersionAndFlags(content); |
| content.get(new byte[4]); // basically a skip of 4 bytes signaling the number of child boxes |
| parseChildBoxes(content); |
| } |
| |
| |
| @Override |
| protected void getContent(ByteBuffer byteBuffer) { |
| writeVersionAndFlags(byteBuffer); |
| IsoTypeWriter.writeUInt32(byteBuffer, getBoxes().size()); |
| writeChildBoxes(byteBuffer); |
| } |
| |
| } |