High performance barcode scanner for React Native using VisionCamera

vision-camera-barcode-scanner

Features

High performance barcode scanner for React Native using VisionCamera.

Demo

A working project can be found at vision-camera-barcode-scanner-example

Install

npm install @mgcrea/vision-camera-barcode-scanner
# or
yarn add @mgcrea/vision-camera-barcode-scanner
# or
pnpm add @mgcrea/vision-camera-barcode-scanner

Dependencies

This package relies on:

You must add them as dependencies to your project:

npm install react-native-vision-camera react-native-worklets-core
# or
yarn add react-native-vision-camera react-native-worklets-core
# or
pnpm add react-native-vision-camera react-native-worklets-core

Then you must follow their respective installation instructions:

Quickstart

import {
  CameraHighlights,
  useBarcodeScanner,
} from "@mgcrea/vision-camera-barcode-scanner";
import type { FunctionComponent } from "react";
import { StyleSheet } from "react-native";

export const App: FunctionComponent = () => {
  // @NOTE you must properly ask for camera permissions first!
  // You should use `PermissionsAndroid` for Android and `Camera.requestCameraPermission()` on iOS.

  const { props: cameraProps, highlights } = useBarcodeScanner({
    fps: 5,
    onBarcodeScanned: (barcodes) => {
      "worklet";
      console.log(
        `Scanned ${barcodes.length} codes with values=${JSON.stringify(
          barcodes.map(({ value }) => value),
        )} !`,
      );
    },
  });

  const devices = useCameraDevices();
  const device = devices.find(({ position }) => position === "back");
  const format = useCameraFormat(device, [
    { videoResolution: { width: 1920, height: 1080 } },
  ]);
  if (!device) {
    return null;
  }

  return (
    <View style={{ flex: 1 }}>
      <Camera
        style={StyleSheet.absoluteFill}
        device={device}
        isActive
        {...cameraProps}
      />
      <CameraHighlights highlights={highlights} color="peachpuff" />
    </View>
  );
};

Credits

Inspired by:

Authors

License

The MIT License

Copyright (c) 2023 Olivier Louvignes <olivier@mgcrea.io>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

GitHub

View Github