ch.randelshofer.media.quicktime
Class QuickTimeWriter.Edit

java.lang.Object
  ch.randelshofer.media.quicktime.QuickTimeWriter.Edit

Enclosing class:

QuickTimeWriter

public static class QuickTimeWriter.Edit
extends java.lang.Object

An Edit define the portions of the media that are to be used to build up a track for a movie. The edits themselves are stored in an edit list table, which consists of time offset and duration values for each segment.

In the absence of an edit list, the presentation of the track starts immediately. An empty edit is used to offset the start time of a track.

Field Summary

int	mediaRate A 32-bit fixed-point number (16.16) that specifies the relative rate at which to play the media corresponding to this edit segment.
int	mediaTime A 32-bit integer containing the start time within the media of this edit segment (in media time scale units).
int	trackDuration A 32-bit integer that specifies the duration of this edit segment in units of the movie's time scale.

Constructor Summary

QuickTimeWriter.Edit(int trackDuration, int mediaTime, double mediaRate)
Creates an edit.

QuickTimeWriter.Edit(int trackDuration, int mediaTime, int mediaRate)
Creates an edit.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

trackDuration

public int trackDuration

A 32-bit integer that specifies the duration of this edit segment in units of the movie's time scale.

mediaTime

public int mediaTime

A 32-bit integer containing the start time within the media of this edit segment (in media time scale units). If this field is set to -1, it is an empty edit. The last edit in a track should never be an empty edit. Any differece between the movie's duration and the track's duration is expressed as an implicit empty edit.

mediaRate

public int mediaRate

A 32-bit fixed-point number (16.16) that specifies the relative rate at which to play the media corresponding to this edit segment. This rate value cannot be 0 or negative.

Constructor Detail

QuickTimeWriter.Edit

public QuickTimeWriter.Edit(int trackDuration,
                            int mediaTime,
                            double mediaRate)

Creates an edit.

Parameters:

trackDuration - Duration of this edit in the movie's time scale.

mediaTime - Start time of this edit in the media's time scale. Specify -1 for an empty edit. The last edit in a track should never be an empty edit.

mediaRate - The relative rate at which to play this edit.

QuickTimeWriter.Edit

public QuickTimeWriter.Edit(int trackDuration,
                            int mediaTime,
                            int mediaRate)

Creates an edit.

Use this constructor only if you want to compute the fixed point media rate by yourself.

Parameters:

trackDuration - Duration of this edit in the movie's time scale.

mediaTime - Start time of this edit in the media's time scale. Specify -1 for an empty edit. The last edit in a track should never be an empty edit.

mediaRate - The relative rate at which to play this edit given as a 16.16 fixed point value.