Package tv.amwa.maj.record

Specifications of representations of structured values, such as those of the AAF record data types.

See:
Description

Interface Summary

AUID	Specifies a 16-byte unique identifier whose value is a SMPTE 298M Universal Label or a UUID or GUID.
DateStruct	Specifies the date component of timestamp values that are specified according to Coordinated Universal Time (UTC).
DefaultFade	Specifies the optional default audio fade properties of a composition mob, which are either all present or all omitted.
EdgecodeValue	Specifies a value that represents film edge code information.
Fade	Specifies a value that describes an audio fade operation associated with a source clip in terms of its fade in and out lengths and types.
MobID	Specifies a 32 byte mob id unique identifier that can hold a SMPTE UMID, as specified in SMPTE 330M.
MultiCreateItem	Specifies an element of an array used to create interleaved audio and video essence.
MultiResultItem	Specifies an element of an array containing multiple result values from an operation to read one or more channels from an interleaved data stream.
MultiXferItem	Specifies an element of a transfer array that is used when reading one or more channels from an interlaced data stream.
ProductVersion	Specifies the version number of an application, represented with four release levels and its product release type.
Rational	Specifies a rational number by means of a Java integer numerator (Int32) and a Java integer (Int32) denominator.
RGBAComponent	Specifies an element of an array representing the order and size of the component values within a pixel value as part of an RGBA Layout.
SourceReferenceValue	Specifies a reference to a clip of source material, specified by material identifier, slot number and start time offset components.
TimecodeValue	Specifies videotape or audio tape timecode information.
TimeStamp	Specifies a date and time in UTC (Coordinated Universal Time).
TimeStruct	Specifies the time component of date and time values specified according to Coordinated Universal Time (UTC), including hour, minute, second and 1/100th of a second.
VersionType	Specifies a 2-byte unsigned version number, consisting of a major and minor component.

Package tv.amwa.maj.record Description

Specifications of representations of structured values, such as those of the AAF record data types. Property values of the record type consist of values for an ordered set of fields, where each field has a name and type.

Most of the interfaces in this package have implementations in either the embeddable or argument packages. The reasons for this are:

• embeddable package - The interface represents a persistent structure of a type that can be used to define the property of an AAF class. Such classes are defined by a record type definition.
• argument package - The interface represents a non-persistent structure that has been defined to group together a collection of parameters to a method call, or returned from a method call. One use of this kind of grouping is to support the conditional rules of the AAF object specification.

Included in this package are:

• Interfaces to the unique identifiers used in AAF, AUID and MobID.
• Interfaces for date and time representations used to make up the Coordinated Universal Time time stamp.
• Interfaces for tape timecodes and film edge codes.
• Interfaces for structured numerical rational numbers.

A generic means of mapping the public fields of any Java class to an AAF record type definition is provided by the createValueFromObject() and getObject() methods of a record type definition.

Heritage

The interfaces defined in this package are derived from structures defined for the C-based AAF SDK in file "AAFTypes.h". The structure has been converted to a Java interface with every element of the C struct represented by a pair of get and set methods.

For example, the AAF rational data type is defined in the AAF SDK by the following structure:

    typedef struct _aafRational_t
    {
        aafInt32           numerator;
        aafInt32           denominator;
    } aafRational_t;

This has been translated to the Java interface called Rational as follows:

    public interface Rational {
        @Int32 getNumerator();
        void setNumerator(@Int32 int numerator);
        @Int32 getDenominator();
        void setDenominator(@Int32 int denominator);
    }

Author:

Richard Cartwright

See Also:

TypeDefinitionRecord