import type { HybridObject } from 'react-native-nitro-modules';
import type { Frame } from 'react-native-vision-camera';
import type { Face } from './Face.nitro';
/**
 * Represents a Face Scanner that uses MLKit Face Detection.
 *
 * The {@linkcode FaceScanner} can be used in a
 * Frame Processor by calling {@linkcode FaceScanner.scanFaces | scanFaces(...)}.
 *
 * @see {@linkcode useFaceScanner | useFaceScanner(...)}
 * @see {@linkcode createFaceScanner | createFaceScanner(...)}
 */
export interface FaceScanner extends HybridObject<{
    ios: 'swift';
    android: 'kotlin';
}> {
    /**
     * @example
     * ```ts
     * const scanner = // ...
     * const frame = // ...
     * const previewView = // ...
     *
     * const faces = scanner.scanFaces(frame)
     * for (const face of faces) {
     *   console.log('Face detected:', face)
     *   for (const point of face.landmarks) {
     *     const cameraPoint = frame.convertFramePointToCameraPoint(point)
     *     const previewPoint = previewView.convertCameraPointToViewPoint(cameraPoint)
     *     console.log('Landmark Point:', previewPoint)
     *   }
     * }
     * ```
     */
    scanFaces(frame: Frame): Face[];
}
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