The Get Regions Of Interest Action

	#include "ofxImageEffect.h"
	#define kOfxImageEffectActionGetRegionsOfInterest         "OfxImageEffectActionGetRegionsOfInterest"
Arguments

Description

This action allows a host to ask an effect, given a region I want to render, what region do you need from each of your input clips. In that way, depending on the host architecture, a host can fetch the minimal amount of the image needed as input. Note that there is a region of interest to be set in outArgs for each input clip that exists on the effect. Form more details see Image Effect Architectures.

Return Values

Default Action

The default RoI is simply the value passed in on the kOfxImageEffectPropRegionOfInterest inArgs property set. All the RoIs in the outArgs property set must initialised to this value before the action is called.