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

Class EditListBox

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.EditListBox

public class EditListBox
extends FullBox

8.6.6.1 Definition

• Box Type: �?elst’
• Container: EditBox (�?edts’)
• Mandatory: No
• Quantity: Zero or one

This box contains an explicit timeline map. Each entry defines part of the track time-line: by mapping part of the media time-line, or by indicating �?empty’ time, or by defining a �?dwell’, where a single time-point in the media is held for a period.

NOTE Edits are not restricted to fall on sample times. This means that when entering an edit, it can be necessary to (a) back up to a sync point, and pre-roll from there and then (b) be careful about the duration of the first sample — it might have been truncated if the edit enters it during its normal duration. If this is audio, that frame might need to be decoded, and then the final slicing done. Likewise, the duration of the last sample in an edit might need slicing.

Starting offsets for tracks (streams) are represented by an initial empty edit. For example, to play a track from its start for 30 seconds, but at 10 seconds into the presentation, we have the following edit list:
Entry-count = 2
Segment-duration = 10 seconds
Media-Time = -1
Media-Rate = 1
Segment-duration = 30 seconds (could be the length of the whole track)
Media-Time = 0 seconds
Media-Rate = 1

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
EditListBox(long size)

Method Summary

Methods

Modifier and Type	Method and Description
int[]	getFraction()
long[]	getMediaTime()
int[]	getRate()
long[]	getSegmentDuration()
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

EditListBox

public EditListBox(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.

getSegmentDuration

public long[] getSegmentDuration()

getMediaTime

public long[] getMediaTime()

getRate

public int[] getRate()

getFraction

public int[] getFraction()