com.googlecode.mp4parser.authoring.tracks

Class CroppedTrack

java.lang.Object

com.googlecode.mp4parser.authoring.AbstractTrack

com.googlecode.mp4parser.authoring.tracks.CroppedTrack

All Implemented Interfaces:

Track

public class CroppedTrack
extends AbstractTrack

Generates a Track that starts at fromSample and ends at toSample (exclusive). The user of this class has to make sure that the fromSample is a random access sample.

• In AAC and most other audio formats this is every single sample
• In H264 this is every sample that is marked in the SyncSampleBox

Constructor Summary

Constructors

Constructor and Description
CroppedTrack(Track origTrack, long fromSample, long toSample) Wraps an existing track and masks out a number of samples.

Method Summary

Methods

Modifier and Type	Method and Description
List<CompositionTimeToSample.Entry>	getCompositionTimeEntries()
String	getHandler()
Box	getMediaHeaderBox()
List<SampleDependencyTypeBox.Entry>	getSampleDependencies()
SampleDescriptionBox	getSampleDescriptionBox()
long[]	getSampleDurations() Each samples is covers a small time span in a video.
List<Sample>	getSamples()
SubSampleInformationBox	getSubsampleInformationBox()
long[]	getSyncSamples()
TrackMetaData	getTrackMetaData()

Methods inherited from class com.googlecode.mp4parser.authoring.AbstractTrack

getDuration

Methods inherited from class java.lang.Object

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

Constructor Detail

CroppedTrack

public CroppedTrack(Track origTrack,
            long fromSample,
            long toSample)

Wraps an existing track and masks out a number of samples. Works like List.subList(int, int).

Parameters:

origTrack - the original Track

fromSample - first sample in the new Track - beginning with 0

toSample - first sample not in the new Track - beginning with 0

Method Detail

getSamples

public List<Sample> getSamples()

getSampleDescriptionBox

public SampleDescriptionBox getSampleDescriptionBox()

getSampleDurations

public long[] getSampleDurations()

Description copied from interface: Track

Each samples is covers a small time span in a video. This method returns the duration for each sample in track timescale. The array must contain exactly as many samples as Track.getSamples() contains.

Returns:

an array of ticks

getCompositionTimeEntries

public List<CompositionTimeToSample.Entry> getCompositionTimeEntries()

Specified by:

getCompositionTimeEntries in interface Track

Overrides:

getCompositionTimeEntries in class AbstractTrack

getSyncSamples

public long[] getSyncSamples()

Specified by:

getSyncSamples in interface Track

Overrides:

getSyncSamples in class AbstractTrack

getSampleDependencies

public List<SampleDependencyTypeBox.Entry> getSampleDependencies()

Specified by:

getSampleDependencies in interface Track

Overrides:

getSampleDependencies in class AbstractTrack

getTrackMetaData

public TrackMetaData getTrackMetaData()

getHandler

public String getHandler()

getMediaHeaderBox

public Box getMediaHeaderBox()

getSubsampleInformationBox

public SubSampleInformationBox getSubsampleInformationBox()

Specified by:

getSubsampleInformationBox in interface Track

Overrides:

getSubsampleInformationBox in class AbstractTrack