react-native-vision-camera-face-detector/lib/module/ImageFaceDetector.js

Frame Processor Plugin to detect faces using MLKit Vision Face Detector for React Native Vision Camera!

"use strict";

import { Image, NativeModules } from 'react-native';
/**
 * Resolves input image
 * 
 * @param {InputImage} image Image path
 * @returns {string} Resolved image
 */
function resolveUri(image) {
  const uri = (() => {
    switch (typeof image) {
      case 'number':
        {
          const source = Image.resolveAssetSource(image);
          return source?.uri;
        }
      case 'string':
        {
          return image;
        }
      case 'object':
        {
          return image?.uri;
        }
      default:
        {
          return undefined;
        }
    }
  })();
  if (!uri) throw new Error('Unable to resolve image');
  return uri;
}

/**
 * Detect faces in a static image
 * 
 * @param {InputImage} image Image path
 * @returns {Promise<Face[]>} List of detected faces
 */
export async function detectFaces({
  image,
  options
}) {
  const uri = resolveUri(image);
  // @ts-ignore
  const {
    ImageFaceDetector
  } = NativeModules;
  return await ImageFaceDetector?.detectFaces(uri, options);
}
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