ImageProcess/native_vision/lib/native_vision_helper.dart

import 'dart:io';
import 'package:image/image.dart' as img;
import 'package:flutter/services.dart';
import 'package:path_provider/path_provider.dart';

class NativeVisionHelper {
  static Future<String> getModelPath(String modelName) async {
    final tempDir = await getTemporaryDirectory();
    final modelCachePath = "${tempDir.path}/$modelName";
    final file = File(modelCachePath);
    final exists = await file.exists();
    if (!exists) {
      final modelData =
          await rootBundle.load("packages/native_vision/assets/$modelName");
      final buffer = modelData.buffer;
      final result = await file.writeAsBytes(
          buffer.asUint8List(modelData.offsetInBytes, modelData.lengthInBytes));
    }
    return file.path;
  }

  // static Future<File?> fixExifRotation(String imagePath) async {
  //   final originalFile = File(imagePath);
  //   List<int> imageBytes = await originalFile.readAsBytes();

  //   final originalImage = img.decodeImage(imageBytes);
  //   if (originalImage == null) return null;
  //   final height = originalImage.height;
  //   final width = originalImage.width;

  //   // Let's check for the image size
  //   if (height >= width) {
  //     // I'm interested in portrait photos so
  //     // I'll just return here
  //     return originalFile;
  //   }

  //   // We'll use the exif package to read exif data
  //   // This is map of several exif properties
  //   // Let's check 'Image Orientation'
  //   final exifData = await readExifFromBytes(imageBytes);

  //   img.Image fixedImage;
  //   final imgOrientation = exifData['Image Orientation'];
  //   // rotate
  //   if (imgOrientation != null &&
  //       imgOrientation.printable.contains('Horizontal')) {
  //     fixedImage = img.copyRotate(originalImage, 90);
  //   } else if (imgOrientation != null &&
  //       imgOrientation.printable.contains('180')) {
  //     fixedImage = img.copyRotate(originalImage, -90);
  //   } else {
  //     fixedImage = img.copyRotate(originalImage, 0);
  //   }

  //   // Here you can select whether you'd like to save it as png
  //   // or jpg with some compression
  //   // I choose jpg with 100% quality
  //   final fixedFile =
  //       await originalFile.writeAsBytes(img.encodeJpg(fixedImage));

  //   return fixedFile;
  // }
}