com.google.android.exoplayer2.extractor

Class ChunkIndex

java.lang.Object

com.google.android.exoplayer2.extractor.ChunkIndex

All Implemented Interfaces:

SeekMap

public final class ChunkIndex
extends java.lang.Object
implements SeekMap

Defines chunks of samples within a media stream.

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.android.exoplayer2.extractor.SeekMap

SeekMap.SeekPoints, SeekMap.Unseekable

Field Summary

Fields

Modifier and Type	Field and Description
long[]	durationsUs The chunk durations, in microseconds.
int	length The number of chunks.
long[]	offsets The chunk byte offsets.
int[]	sizes The chunk sizes, in bytes.
long[]	timesUs The start time of each chunk, in microseconds.

Constructor Summary

Constructors

Constructor and Description
ChunkIndex(int[] sizes, long[] offsets, long[] durationsUs, long[] timesUs)

Method Summary

Modifier and Type	Method and Description
int	getChunkIndex(long timeUs) Obtains the index of the chunk corresponding to a given time.
long	getDurationUs() Returns the duration of the stream in microseconds.
SeekMap.SeekPoints	getSeekPoints(long timeUs) Obtains seek points for the specified seek time in microseconds.
boolean	isSeekable() Returns whether seeking is supported.

Methods inherited from class java.lang.Object

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

Field Detail

length

public final int length

The number of chunks.

sizes

public final int[] sizes

The chunk sizes, in bytes.

offsets

public final long[] offsets

The chunk byte offsets.

durationsUs

public final long[] durationsUs

The chunk durations, in microseconds.

timesUs

public final long[] timesUs

The start time of each chunk, in microseconds.

Constructor Detail

ChunkIndex

public ChunkIndex(int[] sizes,
                  long[] offsets,
                  long[] durationsUs,
                  long[] timesUs)

Parameters:

sizes - The chunk sizes, in bytes.

offsets - The chunk byte offsets.

durationsUs - The chunk durations, in microseconds.

timesUs - The start time of each chunk, in microseconds.

Method Detail

getChunkIndex

public int getChunkIndex(long timeUs)

Obtains the index of the chunk corresponding to a given time.

Parameters:

timeUs - The time, in microseconds.

Returns:

The index of the corresponding chunk.

isSeekable

public boolean isSeekable()

Description copied from interface: SeekMap

Returns whether seeking is supported.

Specified by:

isSeekable in interface SeekMap

Returns:

Whether seeking is supported.

getDurationUs

public long getDurationUs()

Description copied from interface: SeekMap

Returns the duration of the stream in microseconds.

Specified by:

getDurationUs in interface SeekMap

Returns:

The duration of the stream in microseconds, or C.TIME_UNSET if the duration is unknown.

getSeekPoints

public SeekMap.SeekPoints getSeekPoints(long timeUs)

Description copied from interface: SeekMap

Obtains seek points for the specified seek time in microseconds. The returned SeekMap.SeekPoints will contain one or two distinct seek points.

Two seek points [A, B] are returned in the case that seeking can only be performed to discrete points in time, there does not exist a seek point at exactly the requested time, and there exist seek points on both sides of it. In this case A and B are the closest seek points before and after the requested time. A single seek point is returned in all other cases.

Specified by:

getSeekPoints in interface SeekMap

Parameters:

timeUs - A seek time in microseconds.

Returns:

The corresponding seek points.