QuickTime 4 Reference

Effect Frame Description

This data structure contains the parameters of a single frame of an effect. It is passed to the MyEffectBegin and MyEffectRenderFrame functions to describe the frame to be rendered.



 
struct EffectsFrameParams {

    ICMFrameTimeRecord  frameTime;

    long                effectDuration;

    Boolean             doAsync;

    unsigned char       pad[3];

    EffectSourcePtr     source;

    void *              refCon;

};

typedef struct EffectsFrameParams EffectsFrameParams;

typedef EffectsFrameParams *EffectsFrameParamsPtr;

Field descriptions

frameTime: Timing data for the current frame. This record includes information such as the total number of frames being rendered in this sequence, and the current frame number.
effectDuration: The duration of a single effect frame.
doAsync: This field contains true if the effect can process asynchronously.
source: A pointer to the input sources.
refCon: A pointer to storage for this instantiation of the effect.