Package structure of the QuickTime for Java API

The QuickTime for Java API has been divided into a number of packages determined by a common functionality. There are a number of packages that represent a broad range of functionality, which then have sub-packages that group smaller sets of functionality together.

The major packages generally have a Constants interface that presents all of the constants that relate to this general grouping and an Exception class that all errors that derive from a call in this package group will throw.

The QuickTime for Java Packages

• quicktime
  • quicktime.io
  • quicktime.qd
  • quicktime.qd3d
    • quicktime.qd3d.camera
    • quicktime.qd3d.math
    • quicktime.qd3d.transform
  • quicktime.sound
  • quicktime.std
    • quicktime.std.anim
    • quicktime.std.clocks
    • quicktime.std.comp
    • quicktime.std.image
    • quicktime.std.movies
      • quicktime.std.movies.media
    • quicktime.std.music
    • quicktime.std.qtcomponents
    • quicktime.std.sg
  • quicktime.util
  • quicktime.vr

(1) The quicktime package.
The QTSession object has calls that setup and intialize the QuickTime engine - InitializeQTML, Gestalt and EnterMovies.
Principal Classes: QTSession, QTException

• The standard header files are:

  Components.h
  All calls from this file are in the quicktime.std.comp package.

   

  ImageCompression.h & ImageCodec.h
  All calls from this file are in the quicktime.std.image package.

   

  MediaHandlers.h
  All calls from this file are in the quicktime.std.movies.media package.

   

  Movies.h
  This file has been separated into a number of packages to present a finer degree of definition and functional grouping.

  • Sprite animation calls are in the quicktime.std.anim package.
  • Callback and TimeBase calls are in the quicktime.std.clocks package.
  • File IO calls are in the quicktime.io package.
  • All Media related calls are in the quicktime.std.movies.media package.
  • The remaining (Movies, MovieController, Track, AtomContainer) calls are in the quicktime.std.movies package.

   

  QuickTimeComponents.h
  This file has been separated into a number of packages to present a finer degree of definition and functional grouping.

  • Clocks component is found in the quicktime.std.clocks package.
  • Sequence grabber components calls are found in the quicktime.std.sg package.
  • The remaining components are found in the quicktime.std.qtcomponents package.

   

  QuickTimeMusic.h
  All calls from this file are in the quicktime.std.music package.

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• The quicktime.std.anim package.
  Classes that provide support for animation. QuickTime can be used as a real time rendering system for animation, distinct from a data format - the movie. Thus you can create a graphics space (SpriteWorld) within which characters (Sprites) can be manipulated.
  Principal Classes: Sprite, SpriteWorld
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• The quicktime.std.clocks package.
  This package contains classes that provide timing services. They include support for the creation of hierarchical dependencies between time bases, the usage of callbacks for user scheduling of events or notification, and the capability of instantiating the system clocks that provide the timing services.
  Principal Classes: Clock, TimeBase, QTCallback subclasses.
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• The quicktime.std.comp package.
  QuickTime is a component based architecture, with much of its funtionality being provided through the creation and implementation of a particular component's API. This package contains classes that provide basic support for this component architecture, a full implementation will be forthcoming.
  Principal Classes: Component, ComponentIdentifier.
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• The quicktime.std.image package.
  Classes that present the Image Compression manager. These classes provide control for the compression and decompression of both single images and sequences of images. It also contains the Matrix class, which (like the Region class in the qd package) is used generally throughout QuickTime to alter and control the rendering of 2D images.
  Principal Classes: CodecComponent, QTImage, CDSequence, Matrix.
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• The quicktime.std.movies package.
  Contains the principal data structures of QuickTime, Movie - which contains one or more Tracks, are the primary way that data is organized and managed in QuickTime. A Movie object can be created from a file, and can be saved to a file. The MovieController provides the standard way that QuickTime data (movies) are presented and controlled. AtomContainer is the standard data structure that is used to store and retrieve data in QuickTime.
  Principal Classes: AtomContainer, Movie, MovieController, Track.
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  • The quicktime.std.movies.media package.
    The Track is a media neutral structure, but it contains a single Media type which defines the kind of data that a Track is representing. The Media, MediaHandler and SampleDescription subclasses describe the various media types that QuickTime can present. Media subclasses control references to data that comprise the raw media data.
    Principal Classes: DataRef, Media subclasses, MediaHandler subclasses, SampleDescription and subclasses.
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• The quicktime.std.music package.
  Contains classes that deal with the general Music architecture provided by QuickTime. This architecture can also be used to capture and generate music (MIDI) events in real time, customize and create instruments and eventually provide your own algorithmic synthesis engines. It currently has a full implementation of the NoteAllocator component, and basic support for the MusicComponent and TunePlayer components.
  Principal Classes: AtomicInstrument, NoteChannel, NoteAllocator.
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• The quicktime.std.qtcomponents package.
  Contains classes that interface with some of the components that are provided to supply different services. The import and export components are supported, tween and time code media components.
  Principal Classes: MovieExporter, MovieImporter, Tweener, TimeCoder.
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• The quicktime.std.sg package.
  Contains classes that implement the Sequence Grabber component for capturing video and audio media data.
  Principal Classes: SequenceGrabber