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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;
/**
* 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. <br>
* 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). <br>
* 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.<br>
* 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";
public SampleTableBox() {
super(TYPE);
}
public SampleDescriptionBox getSampleDescriptionBox() {
for (Box box : boxes) {
if (box instanceof SampleDescriptionBox) {
return (SampleDescriptionBox) box;
}
}
return null;
}
public SampleSizeBox getSampleSizeBox() {
for (Box box : boxes) {
if (box instanceof SampleSizeBox) {
return (SampleSizeBox) box;
}
}
return null;
}
public SampleToChunkBox getSampleToChunkBox() {
for (Box box : boxes) {
if (box instanceof SampleToChunkBox) {
return (SampleToChunkBox) box;
}
}
return null;
}
public ChunkOffsetBox getChunkOffsetBox() {
for (Box box : boxes) {
if (box instanceof ChunkOffsetBox) {
return (ChunkOffsetBox) box;
}
}
return null;
}
public void setChunkOffsetBox(ChunkOffsetBox b) {
for (int i = 0; i < boxes.size(); i++) {
Box box = boxes.get(i);
if (box instanceof ChunkOffsetBox) {
boxes.set(i, b);
}
}
}
public TimeToSampleBox getTimeToSampleBox() {
for (Box box : boxes) {
if (box instanceof TimeToSampleBox) {
return (TimeToSampleBox) box;
}
}
return null;
}
public SyncSampleBox getSyncSampleBox() {
for (Box box : boxes) {
if (box instanceof SyncSampleBox) {
return (SyncSampleBox) box;
}
}
return null;
}
public CompositionTimeToSample getCompositionTimeToSample() {
for (Box box : boxes) {
if (box instanceof CompositionTimeToSample) {
return (CompositionTimeToSample) box;
}
}
return null;
}
public SampleDependencyTypeBox getSampleDependencyTypeBox() {
for (Box box : boxes) {
if (box instanceof SampleDependencyTypeBox) {
return (SampleDependencyTypeBox) box;
}
}
return null;
}
}
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