1dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu/* 2dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Copyright 2008 CoreMedia AG, Hamburg 3dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 4dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Licensed under the Apache License, Version 2.0 (the License); 5dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * you may not use this file except in compliance with the License. 6dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * You may obtain a copy of the License at 7dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 8dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * http://www.apache.org/licenses/LICENSE-2.0 9dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 10dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Unless required by applicable law or agreed to in writing, software 11dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * distributed under the License is distributed on an AS IS BASIS, 12dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * See the License for the specific language governing permissions and 14dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * limitations under the License. 15dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu */ 16dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 17dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhupackage com.coremedia.iso.boxes; 18dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 19dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 20dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport com.coremedia.iso.IsoTypeWriter; 21dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport com.googlecode.mp4parser.FullContainerBox; 22dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 23dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.nio.ByteBuffer; 24dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 25dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu/** 26dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * The data reference object contains a table of data references (normally URLs) that declare the location(s) of 27dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * the media data used within the presentation. The data reference index in the sample description ties entries in 28dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * this table to the samples in the track. A track may be split over several sources in this way. 29dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 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) 30dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * shall be supplied in the entry field. 31dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * The DataEntryBox within the DataReferenceBox shall be either a DataEntryUrnBox or a DataEntryUrlBox. 32dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 33dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * @see com.coremedia.iso.boxes.DataEntryUrlBox 34dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * @see com.coremedia.iso.boxes.DataEntryUrnBox 35dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu */ 36dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhupublic class DataReferenceBox extends FullContainerBox { 37dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 38dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static final String TYPE = "dref"; 39dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 40dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public DataReferenceBox() { 41dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu super(TYPE); 42dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 43dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 44dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 45dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu @Override 46dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu protected long getContentSize() { 47dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu return super.getContentSize() + 4; 48dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 49dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 50dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu @Override 51dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public void _parseDetails(ByteBuffer content) { 52dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu parseVersionAndFlags(content); 53dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu content.get(new byte[4]); // basically a skip of 4 bytes signaling the number of child boxes 54dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu parseChildBoxes(content); 55dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 56dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 57dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 58dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu @Override 59dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu protected void getContent(ByteBuffer byteBuffer) { 60dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeVersionAndFlags(byteBuffer); 61dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu IsoTypeWriter.writeUInt32(byteBuffer, getBoxes().size()); 62dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeChildBoxes(byteBuffer); 63dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 64dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 65dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu} 66