enum ResolutionPreset {
  /// 352x288 on iOS, 240p (320x240) on Android and Web
  low,

  /// 480p (640x480 on iOS, 720x480 on Android and Web)
  medium,

  /// 720p (1280x720)
  high,

  /// 1080p (1920x1080)
  veryHigh,

  /// 2160p (3840x2160 on Android and iOS, 4096x2160 on Web)
  ultraHigh,

  /// The highest resolution available.
  max,
}

  camera: ^0.10.5+5
  camera_android_camerax: ^0.5.0+22

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

late List<CameraDescription> _cameras;

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();

  _cameras = await availableCameras();
  runApp(const CameraApp());
}

/// CameraApp is the Main Application.
class CameraApp extends StatefulWidget {
  /// Default Constructor
  const CameraApp({super.key});

  @override
  State<CameraApp> createState() => _CameraAppState();
}

class _CameraAppState extends State<CameraApp> {
  late CameraController controller;

  @override
  void initState() {
    super.initState();
    controller = CameraController(_cameras[0], ResolutionPreset.high);
    controller.initialize().then((_) {
      controller.startImageStream(_processCameraImage);
      if (!mounted) {
        return;
      }
      setState(() {});
    }).catchError((Object e) {
      if (e is CameraException) {
        switch (e.code) {
          case 'CameraAccessDenied':
            // Handle access errors here.
            break;
          default:
            // Handle other errors here.
            break;
        }
      }
    });
  }

  Future _processCameraImage(CameraImage image) async {
    final WriteBuffer allBytes = WriteBuffer();
    for (final Plane plane in image.planes) {
      allBytes.putUint8List(plane.bytes);
    }
    final bytes = allBytes.done().buffer.asUint8List();

    final Size imageSize = Size(image.width.toDouble(), image.height.toDouble());
    print("size: ${imageSize.width} / ${imageSize.height}");
  }

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

  @override
  Widget build(BuildContext context) {
    if (!controller.value.isInitialized) {
      return Container();
    }
    return MaterialApp(
      home: CameraPreview(controller),
    );
  }
}