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2026-09-08 22:29:00 +08:00
parent daf47ca385
commit e519e1d71d
23 changed files with 1261 additions and 6 deletions
@@ -0,0 +1,46 @@
+import 'dart:typed_data';
+
+import 'package:image/image.dart' as img;
+
+/// 按一次快照帧：单平面 BGRA/RGBA 像素（两平台分析帧均为竖屏单平面 4 通道）。
+/// 即喂给 YOLO 推理的同一帧，尺寸与推理输入同源。
+class FrameSnapshot {
+  final Uint8List plane;
+  final int bytesPerRow;
+  final int width;
+  final int height;
+
+  /// true = BGRA 字节序（Android 原生通道默认 / iOS bgra8888），false = RGBA
+  final bool bgra;
+
+  const FrameSnapshot({
+    required this.plane,
+    required this.bytesPerRow,
+    required this.width,
+    required this.height,
+    required this.bgra,
+  });
+}
+
+/// 在 isolate 执行：整帧像素行拷贝 → 解码为 Image → jpg q85 重编码。
+/// 与推理帧同源同尺寸、重编码天然剥离全部元数据（合规硬要求）
+Uint8List encodeFrameJpeg(FrameSnapshot snap) {
+  final packed = Uint8List(snap.width * snap.height * 4);
+  for (var y = 0; y < snap.height; y++) {
+    final srcStart = y * snap.bytesPerRow;
+    final dstStart = y * snap.width * 4;
+    packed.setRange(dstStart, dstStart + snap.width * 4,
+        snap.plane.sublist(srcStart, srcStart + snap.width * 4));
+  }
+  final image = img.Image.fromBytes(
+    width: snap.width,
+    height: snap.height,
+    bytes: packed.buffer,
+    numChannels: 4,
+    order: snap.bgra ? img.ChannelOrder.bgra : img.ChannelOrder.rgba,
+  );
+  return Uint8List.fromList(img.encodeJpg(image, quality: 85));
+}
+
+/// 单独同意弹窗结果存储 key（FlutterSecureStorage，与 terms_accepted 同库）
+const falseTargetConsentKey = 'false_target_consent';
@@ -0,0 +1,66 @@
+import 'dart:convert';
+import 'dart:io' show Platform;
+import 'dart:typed_data';
+
+import 'package:cupertino_http/cupertino_http.dart';
+import 'package:flutter/foundation.dart' show kIsWeb;
+import 'package:http/http.dart' as http;
+
+import '../auth/session_store.dart';
+import '../config/app_config.dart';
+
+/// 假目标上报 API 客户端（契约见 server/README.md「假目标上报」）。
+/// 仅上传误报框裁剪图（客户端已重编码剥离元数据）+ 检测框快照字段。
+class FeedbackApi {
+  final String baseUrl;
+  final SessionStore sessionStore;
+  final http.Client _client;
+
+  FeedbackApi({String? baseUrl, required this.sessionStore, http.Client? client})
+      : baseUrl = baseUrl ?? AppConfig.apiBaseUrl,
+        _client = client ?? _defaultHttpClient();
+
+  static http.Client _defaultHttpClient() {
+    if (!kIsWeb && Platform.isIOS) {
+      return CupertinoClient.defaultSessionConfiguration();
+    }
+    return http.Client();
+  }
+
+  /// 上报假目标：[jpeg] 为上报瞬间的分析帧整图（与推理帧同源同尺寸），
+  /// [detectionsJson] 为当前全部检测框快照 JSON 数组（可为空串）
+  Future<int> reportFalseTarget({
+    required Uint8List jpeg,
+    required String detectionsJson,
+    required int sourceW,
+    required int sourceH,
+  }) async {
+    final token = await sessionStore.readToken();
+    if (token == null || token.isEmpty) {
+      throw Exception('登录已失效');
+    }
+    final req = http.MultipartRequest(
+      'POST',
+      Uri.parse('$baseUrl/api/v1/feedback/false-target'),
+    )
+      ..headers['Authorization'] = 'Bearer $token'
+      ..fields['detections'] = detectionsJson
+      ..fields['sourceW'] = '$sourceW'
+      ..fields['sourceH'] = '$sourceH'
+      ..files.add(
+          http.MultipartFile.fromBytes('file', jpeg, filename: 'frame.jpg'));
+    final streamed =
+        await _client.send(req).timeout(const Duration(seconds: 30));
+    final res = await http.Response.fromStream(streamed);
+    final Map<String, dynamic> json;
+    try {
+      json = jsonDecode(res.body) as Map<String, dynamic>;
+    } catch (_) {
+      throw Exception('服务端响应异常 (${res.statusCode})');
+    }
+    if (res.statusCode != 200 || json['code'] != 0) {
+      throw Exception(json['message'] as String? ?? '上报失败 (${res.statusCode})');
+    }
+    return ((json['data'] as Map?)?['id'] as num?)?.toInt() ?? 0;
+  }
+}