import 'package:camera/camera.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key}) : super(key: key);

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  CameraController? controller;

  Future<void> init() async {
    final cameras = await availableCameras();
    if (cameras.isEmpty) return;
    controller = CameraController(
      cameras.first,
      ResolutionPreset.veryHigh,
      enableAudio: false,
      imageFormatGroup: ImageFormatGroup.yuv420,
    );
    await controller!.initialize();
  }

  @override
  void initState() {
    init().then((_) {
      setState(() {});
    });
    super.initState();
  }

  @override
  void dispose() {
    controller?.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: controller == null ? Container() : CameraPreview(controller!),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          controller?.startImageStream((image) {
            print('format: ${image.format.group}');
            print('planes: ${image.planes.length}');
            print('bytes: ${image.planes.first.bytes.length}');
            print('width: ${image.width}');
            print('height: ${image.height}');
            print('bytesPerRow: ${image.planes.first.bytesPerRow}');
          });
        },
        child: const Icon(Icons.camera),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}