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

Class ChunkOffsetBox

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.ChunkOffsetBox

public class ChunkOffsetBox
extends FullBox

8.7.5.1 Definition

Box Type: �?stco’, �?co64’
• Container: Sample Table Box (�?stbl’)
• Mandatory: Yes
• Quantity: Exactly one variant must be present

The chunk offset table gives the index of each chunk into the containing file. There are two variants, permitting the use of 32-bit or 64-bit offsets. The latter is useful when managing very large presentations. At most one of these variants will occur in any single instance of a sample table.

Offsets are file offsets, not the offset into any box within the file (e.g. Media Data Box). This permits referring to media data in files without any box structure. It does also mean that care must be taken when constructing a self-contained ISO file with its metadata (Movie Box) at the front, as the size of the Movie Box will affect the chunk offsets to the media data.

Author:

amit bhayani

Field Summary

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

bytetoTypeMap

Constructor Summary

Constructors

Constructor and Description
ChunkOffsetBox(long size)

Method Summary

Methods

Modifier and Type	Method and Description
long[]	getChunkOffset()
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

ChunkOffsetBox

public ChunkOffsetBox(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.

getChunkOffset

public long[] getChunkOffset()