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

Class SampleToChunkBox

java.lang.Object

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

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

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

public class SampleToChunkBox
extends FullBox

8.7.4.1 Definition

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

Samples within the media data are grouped into chunks. Chunks can be of different sizes, and the samples within a chunk can have different sizes. This table can be used to find the chunk that contains a sample, its position, and the associated sample description.

The table is compactly coded. Each entry gives the index of the first chunk of a run of chunks with the same characteristics. By subtracting one entry here from the previous one, you can compute how many chunks are in this run. You can convert this to a sample count by multiplying by the appropriate samples-per-chunk.

Author:

amit bhayani

Field Summary

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

bytetoTypeMap

Constructor Summary

Constructors

Constructor and Description
SampleToChunkBox(long size)

Method Summary

Methods

Modifier and Type	Method and Description
long[]	getFirstChunk()
long[]	getSampleDescriptionIndex()
long[]	getSamplesPerChunk()
protected int	load(DataInputStream fin) Loads Box from stream.

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

getFlags, getVersion, read64

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

SampleToChunkBox

public SampleToChunkBox(long size)

Method Detail

load

protected int load(DataInputStream fin)
            throws IOException

Description copied from class: Box

Loads Box from stream.

Overrides:

load in class FullBox

Parameters:

fin - the stream to load box from

Returns:

the number of bytes readed from stream; *

Throws:

IOException - if some I/O error occured.

getFirstChunk

public long[] getFirstChunk()

getSamplesPerChunk

public long[] getSamplesPerChunk()

getSampleDescriptionIndex

public long[] getSampleDescriptionIndex()