Package com.sedmelluq.discord.lavaplayer.container.mp3

Class Mp3ConstantRateSeeker

java.lang.Object

com.sedmelluq.discord.lavaplayer.container.mp3.Mp3ConstantRateSeeker

All Implemented Interfaces:

Mp3Seeker

public class Mp3ConstantRateSeeker
extends java.lang.Object
implements Mp3Seeker

MP3 seeking support for constant bitrate files or in cases where the variable bitrate format used by the file is not supported. In case the file is not actually CBR, this being used as a fallback may cause inaccurate seeking.

Method Summary

Modifier and Type	Method	Description
static Mp3ConstantRateSeeker	createFromFrame(long firstFramePosition, long contentLength, byte[] frameBuffer)
long	getDuration()
static boolean	isMetaFrame(byte[] frameBuffer)
boolean	isSeekable()
long	seekAndGetFrameIndex(long timecode, SeekableInputStream inputStream)

Methods inherited from class java.lang.Object

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

Method Detail

createFromFrame

public static Mp3ConstantRateSeeker createFromFrame(long firstFramePosition,
                                                    long contentLength,
                                                    byte[] frameBuffer)

Parameters:

firstFramePosition - Position of the first frame in the file

contentLength - Total length of the file

frameBuffer - Buffer of the first frame

Returns:

Constant rate seeker, will always succeed, never null.

isMetaFrame

public static boolean isMetaFrame(byte[] frameBuffer)

getDuration

public long getDuration()

Specified by:

getDuration in interface Mp3Seeker

Returns:

The duration of the file in milliseconds. May be an estimate.

isSeekable

public boolean isSeekable()

Specified by:

isSeekable in interface Mp3Seeker

Returns:

True if the track is seekable.

seekAndGetFrameIndex

public long seekAndGetFrameIndex(long timecode,
                                 SeekableInputStream inputStream)
                          throws java.io.IOException

Specified by:

seekAndGetFrameIndex in interface Mp3Seeker

Parameters:

timecode - The timecode that the seek is requested to

inputStream - The input stream to perform the seek on

Returns:

The index of the frame that the seek was performed to

Throws:

java.io.IOException - On IO error