Package com.sedmelluq.discord.lavaplayer.container.matroska.format

Class MutableMatroskaBlock

java.lang.Object

com.sedmelluq.discord.lavaplayer.container.matroska.format.MutableMatroskaBlock

All Implemented Interfaces:

MatroskaBlock

public class MutableMatroskaBlock
extends java.lang.Object
implements MatroskaBlock

An implementation of MatroskaBlock which can be reused by loading the next block into it by calling parseHeader(MatroskaFileReader, MatroskaElement, int). Does not reallocate any objects unless it encounters a block with more than twice as many frames as seen before, or a frame more than twice as long as before.

Constructor Summary

Constructors

Constructor	Description
MutableMatroskaBlock()

Method Summary

Modifier and Type	Method	Description
int	getFrameCount()
java.nio.ByteBuffer	getNextFrameBuffer(MatroskaFileReader reader, int index)	The reader must already be positioned at the frame that is to be read next.
int	getTimecode()
int	getTrackNumber()
boolean	isKeyFrame()
boolean	parseHeader(MatroskaFileReader reader, MatroskaElement element, int trackFilter)	Parses the Matroska block header data into the fields of this instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

MutableMatroskaBlock

public MutableMatroskaBlock()

Method Detail

getTimecode

public int getTimecode()

Specified by:

getTimecode in interface MatroskaBlock

Returns:

The timecode of this block relative to its cluster

getTrackNumber

public int getTrackNumber()

Specified by:

getTrackNumber in interface MatroskaBlock

Returns:

The track number which this block is for

isKeyFrame

public boolean isKeyFrame()

Specified by:

isKeyFrame in interface MatroskaBlock

Returns:

Whether this block is a keyframe

getFrameCount

public int getFrameCount()

Specified by:

getFrameCount in interface MatroskaBlock

Returns:

The number of frames in this block

getNextFrameBuffer

public java.nio.ByteBuffer getNextFrameBuffer(MatroskaFileReader reader,
                                              int index)
                                       throws java.io.IOException

Description copied from interface: MatroskaBlock

The reader must already be positioned at the frame that is to be read next.

Specified by:

getNextFrameBuffer in interface MatroskaBlock

Parameters:

reader - The reader to use to read the block contents into a buffer.

index - The index of the frame to get the buffer for.

Returns:

A buffer where the range between position and limit contains the data for the specific frame. The contents of this buffer are only valid until the next call to this method.

Throws:

java.io.IOException - On read error.

parseHeader

public boolean parseHeader(MatroskaFileReader reader,
                           MatroskaElement element,
                           int trackFilter)
                    throws java.io.IOException

Parses the Matroska block header data into the fields of this instance. On success of this method, this instance effectively represents that block.

Parameters:

reader - The reader to use.

element - The block EBML element.

trackFilter - The ID of the track to read data for from the block.

Returns:

true of a block if it contains data for the requested track, false otherwise.

Throws:

java.io.IOException - On read error.