org.jcodec.containers.mp4.demuxer

Class AbstractMP4DemuxerTrack

java.lang.Object

org.jcodec.containers.mp4.demuxer.AbstractMP4DemuxerTrack

All Implemented Interfaces:

DemuxerTrack, SeekableDemuxerTrack

Direct Known Subclasses:

MP4DemuxerTrack, PCMMP4DemuxerTrack

public abstract class AbstractMP4DemuxerTrack
extends Object
implements SeekableDemuxerTrack

This class is part of JCodec ( www.jcodec.org ) This software is distributed under FreeBSD License Shared routines between PCM and Frames tracks

Author:

The JCodec project

Field Summary

Fields

Modifier and Type	Field and Description
protected TrakBox	box
protected long[]	chunkOffsets
protected long	curFrame
protected long	duration
protected long	pts
protected SampleEntry[]	sampleEntries
protected SampleToChunkBox.SampleToChunkEntry[]	sampleToChunks
protected int	stcoInd
protected int	stscInd
protected int	sttsInd
protected int	sttsSubInd
protected int	timescale
protected TimeToSampleBox.TimeToSampleEntry[]	timeToSamples

Constructor Summary

Constructors

Constructor and Description
AbstractMP4DemuxerTrack(TrakBox trak)

Method Summary

Modifier and Type	Method and Description
boolean	canSeek(long pts)
ByteBuffer	convertPacket(ByteBuffer _in)
TrakBox	getBox()
long	getCurFrame() Gets an index of the frame that the next call to 'nextFrame' will return, zero based.
RationalLarge	getDuration()
List<Edit>	getEdits()
String	getFourcc()
abstract long	getFrameCount()
DemuxerTrackMeta	getMeta()
String	getName()
abstract MP4Packet	getNextFrame(ByteBuffer storage)
int	getNo()
SampleEntry[]	getSampleEntries()
long	getTimescale()
MP4TrackType	getType()
boolean	gotoFrame(long frameNo) Goes to exactly frameNo.
protected void	nextChunk()
int	pts2Sample(long _tv, int _timescale)
protected ByteBuffer	readPacketData(SeekableByteChannel input, ByteBuffer buffer, long offset, int size)
void	seek(double second) Seeks this container to the second provided so that the next call to nextFrame will return a frame at that second.
protected abstract void	seekPointer(long frameNo)
boolean	seekPts(long pts)
protected void	shiftPts(long frames)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jcodec.common.SeekableDemuxerTrack

gotoSyncFrame

Methods inherited from interface org.jcodec.common.DemuxerTrack

nextFrame

Field Detail

box

protected TrakBox box

sampleEntries

protected SampleEntry[] sampleEntries

timeToSamples

protected TimeToSampleBox.TimeToSampleEntry[] timeToSamples

sampleToChunks

protected SampleToChunkBox.SampleToChunkEntry[] sampleToChunks

chunkOffsets

protected long[] chunkOffsets

duration

protected long duration

sttsInd

protected int sttsInd

sttsSubInd

protected int sttsSubInd

stcoInd

protected int stcoInd

stscInd

protected int stscInd

pts

protected long pts

curFrame

protected long curFrame

timescale

protected int timescale

Constructor Detail

AbstractMP4DemuxerTrack

public AbstractMP4DemuxerTrack(TrakBox trak)

Method Detail

pts2Sample

public int pts2Sample(long _tv,
                      int _timescale)

getType

public MP4TrackType getType()

getNo

public int getNo()

getSampleEntries

public SampleEntry[] getSampleEntries()

getBox

public TrakBox getBox()

getTimescale

public long getTimescale()

seekPointer

protected abstract void seekPointer(long frameNo)

canSeek

public boolean canSeek(long pts)

seekPts

public boolean seekPts(long pts)

shiftPts

protected void shiftPts(long frames)

nextChunk

protected void nextChunk()

gotoFrame

public boolean gotoFrame(long frameNo)

Description copied from interface: SeekableDemuxerTrack

Goes to exactly frameNo.

Specified by:

gotoFrame in interface SeekableDemuxerTrack

Parameters:

frameNo - Frame number, zero based, to go to.

Returns:

Weather or not the operation was successful. Will fail if the frameNo is out of range.

seek

public void seek(double second)

Description copied from interface: SeekableDemuxerTrack

Seeks this container to the second provided so that the next call to nextFrame will return a frame at that second.

Specified by:

seek in interface SeekableDemuxerTrack

Parameters:

second - A second to seek to.

getDuration

public RationalLarge getDuration()

getFrameCount

public abstract long getFrameCount()

getCurFrame

public long getCurFrame()

Description copied from interface: SeekableDemuxerTrack

Gets an index of the frame that the next call to 'nextFrame' will return, zero based.

Specified by:

getCurFrame in interface SeekableDemuxerTrack

Returns:

An index of the next frame, zero based.

getEdits

public List<Edit> getEdits()

getName

public String getName()

getFourcc

public String getFourcc()

readPacketData

protected ByteBuffer readPacketData(SeekableByteChannel input,
                                    ByteBuffer buffer,
                                    long offset,
                                    int size)
                             throws IOException

Throws:

IOException

getNextFrame

public abstract MP4Packet getNextFrame(ByteBuffer storage)
                                throws IOException

Throws:

IOException

convertPacket

public ByteBuffer convertPacket(ByteBuffer _in)

getMeta

public DemuxerTrackMeta getMeta()

Specified by:

getMeta in interface DemuxerTrack