import { MonkPicture } from '@monkvision/types';
import { CameraHandle } from '@monkvision/camera-web';
/**
 * Params accepted by the useFrameSelection hook.
 */
export interface UseFrameSelectionParams {
    /**
     * The camera handle.
     */
    handle: CameraHandle;
    /**
     * Interval (in milliseconds) at which camera frames should be taken.
     */
    frameSelectionInterval: number;
    /**
     * Callback called when a frame has been selected and should be uploaded to the API.
     */
    onFrameSelected?: (picture: MonkPicture) => void;
}
/**
 * Handle used to manage the frame selection feature.
 */
export interface FrameSelectionHandle {
    /**
     * The number of frames that have successfully been processed and added to the upload queue.
     */
    processedFrames: number;
    /**
     * The total number of frames added to the processing queue.
     */
    totalProcessingFrames: number;
    /**
     * Callback called when a video frame should be captured.
     */
    onCaptureVideoFrame: () => void;
}
/**
 * Custom hook used to manage the video frame selection. Basically, every time a camera screenshot is taken, it is added
 * to the frame selection processing queue. The blurriness score of the screenshot is calculated, and the best video
 * frame (the less blurry one) is always stored in memory. Finally, every `frameSelectionInterval` milliseconds, the
 * best video frame is "selected" (to be uploaded to the API) and the process resets.
 */
export declare function useFrameSelection({ handle, frameSelectionInterval, onFrameSelected, }: UseFrameSelectionParams): FrameSelectionHandle;