com.otaliastudios.transcoder.source

Class TrimDataSource

java.lang.Object

com.otaliastudios.transcoder.source.DataSourceWrapper

com.otaliastudios.transcoder.source.TrimDataSource

All Implemented Interfaces:

DataSource

public class TrimDataSource
extends DataSourceWrapper

A DataSource that trims the inner source at both ends.

Nested Class Summary

Nested classes/interfaces inherited from interface com.otaliastudios.transcoder.source.DataSource

DataSource.Chunk

Constructor Summary

Constructors

Constructor and Description
TrimDataSource(DataSource source, long trimStartUs)
TrimDataSource(DataSource source, long trimStartUs, long trimEndUs)

Method Summary

Modifier and Type	Method and Description
boolean	canReadTrack(TrackType type) Returns true if we can read the given track at this point.
long	getDurationUs() Returns the video total duration in microseconds.
boolean	isDrained() When this source has been totally read, it can return true here to notify an end of input stream.
void	rewind() Rewinds this source, moving it to its default state.
long	seekTo(long durationUs) Moves all selected tracks to the specified presentation time.

Methods inherited from class com.otaliastudios.transcoder.source.DataSourceWrapper

getLocation, getOrientation, getReadUs, getSource, getTrackFormat, readTrack, releaseTrack, selectTrack

Methods inherited from class java.lang.Object

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

Constructor Detail

TrimDataSource

public TrimDataSource(@NonNull
                      DataSource source,
                      long trimStartUs)

TrimDataSource

public TrimDataSource(@NonNull
                      DataSource source,
                      long trimStartUs,
                      long trimEndUs)

Method Detail

getDurationUs

public long getDurationUs()

Description copied from interface: DataSource

Returns the video total duration in microseconds.

Specified by:

getDurationUs in interface DataSource

Overrides:

getDurationUs in class DataSourceWrapper

Returns:

duration in us

canReadTrack

public boolean canReadTrack(@NonNull
                            TrackType type)

Description copied from interface: DataSource

Returns true if we can read the given track at this point. If true if returned, source should expect a DataSource.readTrack(Chunk) call.

Specified by:

canReadTrack in interface DataSource

Overrides:

canReadTrack in class DataSourceWrapper

Parameters:

type - track type

Returns:

true if we can read this track now

isDrained

public boolean isDrained()

Description copied from interface: DataSource

When this source has been totally read, it can return true here to notify an end of input stream.

Specified by:

isDrained in interface DataSource

Overrides:

isDrained in class DataSourceWrapper

Returns:

true if drained

seekTo

public long seekTo(long durationUs)

Description copied from interface: DataSource

Moves all selected tracks to the specified presentation time. The timestamp should be between 0 and DataSource.getDurationUs(). The actual timestamp might differ from the desired one because of seeking constraints (e.g. seek to sync frames).

Specified by:

seekTo in interface DataSource

Overrides:

seekTo in class DataSourceWrapper

Parameters:

durationUs - requested timestamp

Returns:

actual timestamp

rewind

public void rewind()

Description copied from interface: DataSource

Rewinds this source, moving it to its default state. To be used again, tracks will be selected again. After this call, for instance, - DataSource.getReadUs() should be 0 - DataSource.isDrained() should be false - DataSource.readTrack(Chunk) should return the very first bytes

Specified by:

rewind in interface DataSource

Overrides:

rewind in class DataSourceWrapper