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A generic parser and writer for all ISO 14496 based files (MP4, Quicktime, DCF, PDCF, ...)

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/*  
 * 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.googlecode.mp4parser.AbstractContainerBox;

/**
 * 

4cc = "{@value #TYPE}"

* The sample table contains all the time and data indexing of the media samples in a track. Using the tables * here, it is possible to locate samples in time, determine their type (e.g. I-frame or not), and determine their * size, container, and offset into that container.
* If the track that contains the Sample Table Box references no data, then the Sample Table Box does not need * to contain any sub-boxes (this is not a very useful media track).
* If the track that the Sample Table Box is contained in does reference data, then the following sub-boxes are * required: Sample Description, Sample Size, Sample To Chunk, and Chunk Offset. Further, the Sample * Description Box shall contain at least one entry. A Sample Description Box is required because it contains the * data reference index field which indicates which Data Reference Box to use to retrieve the media samples. * Without the Sample Description, it is not possible to determine where the media samples are stored. The Sync * Sample Box is optional. If the Sync Sample Box is not present, all samples are sync samples.
* Annex A provides a narrative description of random access using the structures defined in the Sample Table * Box. */ public class SampleTableBox extends AbstractContainerBox { public static final String TYPE = "stbl"; private SampleToChunkBox sampleToChunkBox; public SampleTableBox() { super(TYPE); } public SampleDescriptionBox getSampleDescriptionBox() { for (Box box : getBoxes()) { if (box instanceof SampleDescriptionBox) { return (SampleDescriptionBox) box; } } return null; } public SampleSizeBox getSampleSizeBox() { for (Box box : getBoxes()) { if (box instanceof SampleSizeBox) { return (SampleSizeBox) box; } } return null; } public SampleToChunkBox getSampleToChunkBox() { if (sampleToChunkBox != null) { return sampleToChunkBox; } for (Box box : getBoxes()) { if (box instanceof SampleToChunkBox) { sampleToChunkBox = (SampleToChunkBox) box; return sampleToChunkBox; } } return null; } public ChunkOffsetBox getChunkOffsetBox() { for (Box box : getBoxes()) { if (box instanceof ChunkOffsetBox) { return (ChunkOffsetBox) box; } } return null; } public TimeToSampleBox getTimeToSampleBox() { for (Box box : getBoxes()) { if (box instanceof TimeToSampleBox) { return (TimeToSampleBox) box; } } return null; } public SyncSampleBox getSyncSampleBox() { for (Box box : getBoxes()) { if (box instanceof SyncSampleBox) { return (SyncSampleBox) box; } } return null; } public CompositionTimeToSample getCompositionTimeToSample() { for (Box box : getBoxes()) { if (box instanceof CompositionTimeToSample) { return (CompositionTimeToSample) box; } } return null; } public SampleDependencyTypeBox getSampleDependencyTypeBox() { for (Box box : getBoxes()) { if (box instanceof SampleDependencyTypeBox) { return (SampleDependencyTypeBox) box; } } return null; } }




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