org.restcomm.media.resource.player.video.mpeg

Class SampleTableBox

java.lang.Object

org.restcomm.media.resource.player.video.mpeg.Box

org.restcomm.media.resource.player.video.mpeg.SampleTableBox

public class SampleTableBox
extends Box

8.5.1.1 Definition

• Box Type: �?stbl’
• Container: MediaInformationBox (�?minf’)
• Mandatory: Yes
• Quantity: Exactly one

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 SampleTableBox is contained in does reference data, then the following sub-boxes are required: SampleDescriptionBox, SampleSizeBox, SampleToChunkBox, and ChunkOffsetBox. Further, the SampleDescriptionBox shall contain at least one entry. A SampleDescriptionBox 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.

Author:

kulikov, amit bhayani

Field Summary

Fields inherited from class org.restcomm.media.resource.player.video.mpeg.Box

bytetoTypeMap

Constructor Summary

Constructors

Constructor and Description
SampleTableBox(long size)

Method Summary

Methods

Modifier and Type	Method and Description
ChunkOffsetBox	getChunkOffsetBox()
CompositionOffsetBox	getCompositionOffsetBox()
SampleDescriptionBox	getSampleDescription()
SampleSizeBox	getSampleSizeBox()
SampleToChunkBox	getSampleToChunkBox()
SyncSampleBox	getSyncSampleBox()
TimeToSampleBox	getTimeToSampleBox()
protected int	load(DataInputStream fin) Loads Box from stream.

Methods inherited from class org.restcomm.media.resource.player.video.mpeg.Box

comparebytes, getSize, getType, read, read16, read24, read32, readFixedPoint1616, readText, readType, readU32, readU64

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SampleTableBox

public SampleTableBox(long size)

Method Detail

load

protected int load(DataInputStream fin)
            throws IOException

Description copied from class: Box

Loads Box from stream.

Specified by:

load in class Box

Parameters:

fin - the stream to load box from

Returns:

the number of bytes readed from stream; *

Throws:

IOException - if some I/O error occured.

getSampleDescription

public SampleDescriptionBox getSampleDescription()

getTimeToSampleBox

public TimeToSampleBox getTimeToSampleBox()

getSampleToChunkBox

public SampleToChunkBox getSampleToChunkBox()

getSampleSizeBox

public SampleSizeBox getSampleSizeBox()

getChunkOffsetBox

public ChunkOffsetBox getChunkOffsetBox()

getSyncSampleBox

public SyncSampleBox getSyncSampleBox()

getCompositionOffsetBox

public CompositionOffsetBox getCompositionOffsetBox()