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/*
* Copyright 2011 Sebastian Annies, 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.googlecode.mp4parser.boxes.mp4;
/**
* This object contains an Object Descriptor or an Initial Object Descriptor.
* There are a number of possible file types based on usage, depending on the descriptor:
* <ul>
* <li>Presentation, contains IOD which contains a BIFS stream (MP4 file);
* <li>Sub-part of a presentation, contains an IOD without a BIFS stream (MP4 file);</li>
* <li>Sub-part of a presentation, contains an OD (MP4 file);</li>
* <li>Free-form file, referenced by MP4 data references (free-format);</li>
* <li>Sub-part of a presentation, referenced by an ES URL.</li>
* </ul>
* NOTE: <br/>
* The first three are MP4 files, a file referenced by a data reference is not necessarily an MP4 file, as it is
* free-format. Files referenced by ES URLs, by data references, or intended as input to an editing process, need not have
* an Object Descriptor Box. <br/>
* An OD URL may point to an MP4 file. Implicitly, the target of such a URL is the OD/IOD located in the 'iods'
* atom in that file.</br/>
* If an MP4 file contains several object descriptors, only the OD/IOD in the 'iods' atom can be addressed using
* an OD URL from a remote MPEG-4 presentation.
*/
public class ObjectDescriptorBox extends AbstractDescriptorBox {
public static final String TYPE = "iods";
public ObjectDescriptorBox() {
super(TYPE);
}
}
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