import VideoFrameProcessor from '../videoframeprocessor/VideoFrameProcessor';
import BackgroundBlurVideoFrameProcessorObserver from './BackgroundBlurVideoFrameProcessorObserver';
/**
 * Interface to define extra methods that need to be implemented for background blur processing
 */
export default interface BackgroundBlurProcessor extends VideoFrameProcessor {
    /**
     * Add an observer to receive notifications about Amazon background blur processor events.
     * See {@link BackgroundBlurVideoFrameProcessorObserver} for details.
     * If the observer has already been added, this method call has no effect.
     */
    addObserver(observer: BackgroundBlurVideoFrameProcessorObserver): void;
    /**
     * Remove an existing observer. If the observer has not been previously
     * added via `addObserver`, this method call has no effect.
     */
    removeObserver(observer: BackgroundBlurVideoFrameProcessorObserver): void;
    /**
     * This setter will allow setting the blur strength mid stream. The process method will use this
     * setting on the next frame that is processed.
     */
    setBlurStrength(blurStrength: number): void;
}