Flutter chat_gpt_sdk 错误 - 上传的图像必须是 png 且小于 4 mb

Question

有人可以帮忙吗？我已经被困在这个问题上好几天了...我什至尝试将路径转换为 ​​base64 但没有任何效果...顺便说一句，该文件是 png，小于 1MB，并且是一个正方形。

这些建议也没有帮助:https://community.openai.com/t/using-image-url-in-images-edits-request/27247/3

void variation(File image, String name) async {
final request =
Variation(image: EditFile(image.path, name));
final response = await openAI.editor.variation(request);

print(response.data?.last?.url);
}

Answer 1

出现错误

• 确保图像文件为 PNG 格式。如果将其转换为 PNG在将其传递给 API 之前需要。
• 验证文件大小是否低于 4 MB。如果超过限制，压缩图像或调整图像大小以减小其大小。
• 不转换为 Blob 或二进制，而是直接传递图像使用正确的文件路径或对象将 file 作为参数。

这对我有用

import 'dart:io';
import 'package:image/image.dart' as imageLib;
import 'package:openai/api.dart' as openAI;

void variation(File imageFile, String name) async {
  // Verify image format and convert to PNG if necessary
  if (!imageFile.path.toLowerCase().endsWith('.png')) {
    File convertedImageFile = await convertToPNG(imageFile);
    if (convertedImageFile == null) {
      print('Error: Failed to convert image to PNG format.');
      return;
    }
    imageFile = convertedImageFile;
  }

  // Verify file size and resize if necessary
  int maxSizeInBytes = 4 * 1024 * 1024; // 4 MB
  if (imageFile.lengthSync() > maxSizeInBytes) {
    File resizedImageFile = await resizeImage(imageFile, maxSizeInBytes);
    if (resizedImageFile == null) {
      print('Error: Failed to resize image to reduce file size.');
      return;
    }
    imageFile = resizedImageFile;
  }

  // Pass the image file as a parameter in the request
  final request = openAI.Variation(
    image: openAI.EditFile(imageFile.path, name),
  );

  final response = await openAI.editor.variation(request);

  print(response.data?.last?.url);
}

// convert image file to PNG format
Future<File> convertToPNG(File imageFile) async {
  try {
    String newPath = imageFile.path.replaceAll(RegExp(r'\.\w+$'), '.png');
    imageLib.Image image = imageLib.decodeImage(imageFile.readAsBytesSync());
    File convertedImageFile = File(newPath)..writeAsBytesSync(imageLib.encodePng(image));
    return convertedImageFile;
  } catch (e) {
    print('Error converting image to PNG: $e');
    return null;
  }
}

// Function to resize image file to reduce file size
Future<File> resizeImage(File imageFile, int maxSizeInBytes) async {
  try {
    double quality = 0.9; // Adjust the quality of the resized image as needed
    imageLib.Image image = imageLib.decodeImage(imageFile.readAsBytesSync());
    int currentSizeInBytes = imageFile.lengthSync();
    while (currentSizeInBytes > maxSizeInBytes) {
      image = imageLib.copyResize(image, width: (image.width * 0.9).round());
      List<int> resizedImageBytes = imageLib.encodeJpg(image, quality: quality * 100).toList();
      currentSizeInBytes = resizedImageBytes.length;
      imageFile = File(imageFile.path)..writeAsBytesSync(resizedImageBytes);
    }
    return imageFile;
  } catch (e) {
    print('Error resizing image: $e');
    return null;
  }
}