org.monte.media.quicktime
Class AbstractQuickTimeStream

java.lang.Object
  org.monte.media.quicktime.AbstractQuickTimeStream

Direct Known Subclasses:

QuickTimeInputStream, QuickTimeOutputStream

public class AbstractQuickTimeStream
extends java.lang.Object

This is the base class for low-level QuickTime stream IO.

FIXME - Separation between AbstractQuickTimeStream and QuickTimeOutputStream is not clean. Move write methods in the track classes down to QuickTimeOutputStream.

Version:

1.0 2011-03-15 Created.

Author:

Werner Randelshofer

Nested Class Summary

protected class	AbstractQuickTimeStream.Atom Atom base class.
protected class	AbstractQuickTimeStream.AudioTrack
protected static class	AbstractQuickTimeStream.Chunk Groups consecutive samples with the same sample description Id and with adjacent offsets in the movie file.
protected class	AbstractQuickTimeStream.CompositeAtom A CompositeAtom contains an ordered list of Atoms.
protected class	AbstractQuickTimeStream.DataAtom Data Atom.
static class	AbstractQuickTimeStream.Edit An Edit define the portions of the media that are to be used to build up a track for a movie.
protected static class	AbstractQuickTimeStream.Group Groups consecutive samples with same characteristics.
protected static class	AbstractQuickTimeStream.Sample QuickTime stores media data in samples.
protected static class	AbstractQuickTimeStream.SampleSizeGroup Groups consecutive samples of the same size.
protected static class	AbstractQuickTimeStream.States The states of the movie output stream.
protected static class	AbstractQuickTimeStream.TimeToSampleGroup Groups consecutive smples of the same duration.
protected class	AbstractQuickTimeStream.Track Represents a track.
protected class	AbstractQuickTimeStream.VideoTrack
protected class	AbstractQuickTimeStream.WideDataAtom WideDataAtom can grow larger then 4 gigabytes.

Field Summary

protected java.util.Date	creationTime Creation time of the movie.
protected AbstractQuickTimeStream.WideDataAtom	mdatAtom This atom holds the media data.
protected long	mdatOffset Offset for the mdat atom.
protected java.util.Date	modificationTime Modification time of the movie.
protected AbstractQuickTimeStream.CompositeAtom	moovAtom This atom holds the moovie header.
protected double[]	movieMatrix The transformation matrix for the entire movie.
protected long	movieTimeScale The timeScale of the movie.
protected javax.imageio.stream.ImageOutputStream	out Underlying output stream.
protected AbstractQuickTimeStream.States	state The current state of the movie output stream.
protected long	streamOffset The offset in the underlying ImageOutputStream.
protected java.util.ArrayList<AbstractQuickTimeStream.Track>	tracks The list of tracks in the movie.

Constructor Summary

AbstractQuickTimeStream()

Method Summary

protected long	getRelativeStreamPosition() Gets the position relative to the beginning of the QuickTime stream.
protected static java.lang.String	intToType(int id)
protected void	seekRelative(long newPosition) Seeks relative to the beginning of the QuickTime stream.
protected static int	typeToInt(java.lang.String str)

Methods inherited from class java.lang.Object

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

Field Detail

out

protected javax.imageio.stream.ImageOutputStream out

Underlying output stream.

streamOffset

protected long streamOffset

The offset in the underlying ImageOutputStream. Normally this is 0 unless the underlying stream already contained data when it was passed to the constructor.

mdatAtom

protected AbstractQuickTimeStream.WideDataAtom mdatAtom

This atom holds the media data.

mdatOffset

protected long mdatOffset

Offset for the mdat atom.

moovAtom

protected AbstractQuickTimeStream.CompositeAtom moovAtom

This atom holds the moovie header.

creationTime

protected java.util.Date creationTime

Creation time of the movie.

modificationTime

protected java.util.Date modificationTime

Modification time of the movie.

movieTimeScale

protected long movieTimeScale

The timeScale of the movie. A time value that indicates the time scale for this media—that is, the number of time units that pass per second in its time coordinate system.

tracks

protected java.util.ArrayList<AbstractQuickTimeStream.Track> tracks

The list of tracks in the movie.

movieMatrix

protected double[] movieMatrix

The transformation matrix for the entire movie.

state

protected AbstractQuickTimeStream.States state

The current state of the movie output stream.

Constructor Detail

AbstractQuickTimeStream

public AbstractQuickTimeStream()

Method Detail

getRelativeStreamPosition

protected long getRelativeStreamPosition()
                                  throws java.io.IOException

Gets the position relative to the beginning of the QuickTime stream.

Usually this value is equal to the stream position of the underlying ImageOutputStream, but can be larger if the underlying stream already contained data.

Returns:

The relative stream position.

Throws:

java.io.IOException

seekRelative

protected void seekRelative(long newPosition)
                     throws java.io.IOException

Seeks relative to the beginning of the QuickTime stream.

Usually this equal to seeking in the underlying ImageOutputStream, but can be different if the underlying stream already contained data.

Throws:

java.io.IOException

typeToInt

protected static int typeToInt(java.lang.String str)

intToType

protected static java.lang.String intToType(int id)