更新了屏幕录制方法。

.gitignore

@@ -99,3 +99,4 @@ frontend/src/renderer/build/
 # Build Output
 # ==========================
 dist-electron-install/
+backend/ffmpeg/

backend/build_app.py

@@ -276,6 +276,17 @@ def copy_config_files():
         else:
             print(f"⚠️  配置文件不存在: {config_file}")
 
+    try:
+        ffmpeg_src = 'ffmpeg'
+        ffmpeg_dst = os.path.join(dist_dir, 'ffmpeg')
+        if os.path.exists(ffmpeg_src):
+            shutil.copytree(ffmpeg_src, ffmpeg_dst, dirs_exist_ok=True)
+            print(f"✓ 已复制 ffmpeg 目录到 {ffmpeg_dst}")
+        else:
+            print("⚠️  未找到 ffmpeg 源目录：ffmpeg")
+    except Exception as e:
+        print(f"⚠️  复制 ffmpeg 目录失败: {e}")
+
 def install_build_dependencies():
     """安装打包依赖"""
     print("检查并安装打包依赖...")

backend/config.ini

@@ -88,3 +88,21 @@ public_key = D:/BodyCheck/license/license_public_key.pem
 grace_days = 7
 dev_mode = False
 
+[SCREEN_RECORDING]
+# 录屏策略：ffmpeg（外部进程录制）或 threaded（内部线程录制）
+strategy = ffmpeg
+# ffmpeg可执行文件绝对路径（Windows示例：D:/BodyCheck/ffmpeg/bin/ffmpeg.exe）
+ffmpeg_path = D:/BodyCheck/ffmpeg/bin/ffmpeg.exe
+# 编码器：libx264（CPU）或 h264_nvenc（GPU，CPU占用更低，需显卡支持）
+ffmpeg_codec = libx264
+# 编码预设：ultrafast（CPU更低、文件更大）；NVENC用 p1/p2 更快
+ffmpeg_preset = ultrafast
+# 编码线程数：限制CPU占用，按机器性能调整
+ffmpeg_threads = 2
+# B帧数量：0可降低编码复杂度与CPU占用
+ffmpeg_bframes = 0
+# 关键帧间隔（GOP，单位：帧）：数值越大CPU越低，seek精度下降
+ffmpeg_gop = 50
+# 是否录制鼠标：0关闭，1开启
+ffmpeg_draw_mouse = 0
+

backend/database.py

@@ -738,40 +738,7 @@ class DatabaseManager:
             '''
             
             cursor.execute(sql, update_values)
-            cursor.execute('SELECT patient_id, creator_id, start_time, end_time, status FROM detection_sessions WHERE id = ?', (session_id,))
+            self._sync_patient_medical_history_from_session(cursor, session_id)
-            srow = cursor.fetchone()
-            if srow:
-                patient_id = srow['patient_id']
-                creator_id = srow['creator_id']
-                session_status = srow['status']
-                start_time = srow['start_time']
-                end_time = srow['end_time']
-                doctor_name = ''
-                if creator_id:
-                    cursor.execute('SELECT name FROM users WHERE id = ?', (creator_id,))
-                    urow = cursor.fetchone()
-                    if urow:
-                        try:
-                            doctor_name = dict(urow).get('name') or ''
-                        except Exception:
-                            doctor_name = urow[0] if urow and len(urow) > 0 else ''
-                check_time = end_time or start_time or self.get_china_time()
-                mh_obj = {}
-                try:
-                    cursor.execute('SELECT medical_history FROM patients WHERE id = ?', (patient_id,))
-                    prow = cursor.fetchone()
-                    if prow and prow[0]:
-                        try:
-                            mh_obj = json.loads(prow[0]) if isinstance(prow[0], str) else {}
-                        except Exception:
-                            mh_obj = {}
-                except Exception:
-                    mh_obj = {}
-                mh_obj['doctor'] = doctor_name
-                mh_obj['status'] = session_status or ''
-                mh_obj['lastcheck_time'] = str(check_time) if check_time is not None else self.get_china_time()
-                now_str = self.get_china_time()
-                cursor.execute('UPDATE patients SET medical_history = ?, updated_at = ? WHERE id = ?', (json.dumps(mh_obj, ensure_ascii=False), now_str, patient_id))
             conn.commit()
             
             updated_info = []
@@ -791,6 +758,44 @@ class DatabaseManager:
             logger.error(f'批量更新会话信息失败: {e}')
             raise   
 
+    def _sync_patient_medical_history_from_session(self, cursor, session_id: str) -> None:
+        """根据会话信息同步患者 medical_history 的 doctor/status/lastcheck_time 字段"""
+        cursor.execute('SELECT patient_id, creator_id, start_time, end_time, status FROM detection_sessions WHERE id = ?', (session_id,))
+        srow = cursor.fetchone()
+        if not srow:
+            return
+        patient_id = srow['patient_id']
+        creator_id = srow['creator_id']
+        session_status = srow['status']
+        start_time = srow['start_time']
+        end_time = srow['end_time']
+        doctor_name = ''
+        if creator_id:
+            cursor.execute('SELECT name FROM users WHERE id = ?', (creator_id,))
+            urow = cursor.fetchone()
+            if urow:
+                try:
+                    doctor_name = dict(urow).get('name') or ''
+                except Exception:
+                    doctor_name = urow[0] if urow and len(urow) > 0 else ''
+        check_time = end_time or start_time or self.get_china_time()
+        mh_obj = {}
+        try:
+            cursor.execute('SELECT medical_history FROM patients WHERE id = ?', (patient_id,))
+            prow = cursor.fetchone()
+            if prow and prow[0]:
+                try:
+                    mh_obj = json.loads(prow[0]) if isinstance(prow[0], str) else {}
+                except Exception:
+                    mh_obj = {}
+        except Exception:
+            mh_obj = {}
+        mh_obj['doctor'] = doctor_name
+        mh_obj['status'] = session_status or ''
+        mh_obj['lastcheck_time'] = str(check_time) if check_time is not None else self.get_china_time()
+        now_str = self.get_china_time()
+        cursor.execute('UPDATE patients SET medical_history = ?, updated_at = ? WHERE id = ?', (json.dumps(mh_obj, ensure_ascii=False), now_str, patient_id))
+    
     def get_detection_sessions(self, page: int = 1, size: int = 10, patient_id: str = None) -> List[Dict]:
         """获取检测会话列表"""
         conn = self.get_connection()
@@ -940,15 +945,31 @@ class DatabaseManager:
         cursor = conn.cursor()
         try:
             cursor.execute(
-                'UPDATE detection_sessions SET detection_report = ?, data_ids = ?, status = COALESCE(status, "reported") WHERE id = ?',
+                'UPDATE detection_sessions SET detection_report = ?, data_ids = ?, status = "reported"  WHERE id = ?',
                 (report_path, data_ids, session_id)
             )
+            self._sync_patient_medical_history_from_session(cursor, session_id)
             conn.commit()
             return cursor.rowcount > 0
         except Exception as e:
             logger.error(f'更新报告路径失败: {e}')
             return False
 
+    def delete_session_report_path(self, session_id: str) -> bool:
+        """删除检测会话的报告路径并将状态置为 completed"""
+        conn = self.get_connection()
+        cursor = conn.cursor()
+        try:
+            cursor.execute(
+                'UPDATE detection_sessions SET detection_report = ?,data_ids = ?, status = "completed" WHERE id = ?',
+                (None, None, session_id)
+            )
+            self._sync_patient_medical_history_from_session(cursor, session_id)
+            conn.commit()
+            return cursor.rowcount > 0
+        except Exception as e:
+            logger.error(f'更新报告路径失败: {e}')
+            return False
     # ==================== 检测截图数据管理 ==================== # 
     def generate_detection_data_id(self) -> str:
         """生成检测数据记录唯一标识(YYYYMMDDHHMMSS)年月日时分秒"""

backend/devices/screen_recorder.py

@@ -18,6 +18,9 @@ import base64
 from pathlib import Path
 from typing import Optional, Dict, Any, List
 import sys
+import subprocess
+import signal
+import queue
 # 移除psutil导入，不再需要性能监控
 import gc
 
@@ -77,6 +80,21 @@ class RecordingManager:
         self.camera1_recording_thread = None
         self.camera2_recording_thread = None
 
+        # 共享屏幕采集资源
+        self._shared_screen_thread = None
+        self._screen_capture_stop_event = threading.Event()
+        self._screen_frame_lock = threading.Lock()
+        self._latest_screen_frame = None
+        self._latest_screen_time = 0.0
+        self._screen_frame_event = threading.Event()
+
+        self._ffmpeg_processes = {}
+        self._ffmpeg_meta = {}
+
+        self._threaded_queues = {}
+        self._threaded_threads = {}
+        self._threaded_stop_events = {}
+
         # 独立的录制参数配置
         self.screen_fps = 25  # 屏幕录制帧率
         self.camera1_fps = 20  # 相机1录制帧率
@@ -208,48 +226,351 @@ class RecordingManager:
         if frame is None:
             return None
         
-        size_category = self._calculate_region_size_category(region)
+        # 屏幕录制优先保证清晰度：不做降采样，避免字体和图标模糊
+        if recording_type == 'screen':
+            return frame
 
-        # 对所有区域进行优化处理以减小文件大小
+        size_category = self._calculate_region_size_category(region)
         _, _, width, height = region
 
-        # 根据区域大小进行不同程度的降采样
+        if size_category == 'xlarge':
-        if size_category == 'xlarge':  #screen录屏·超大区域
+            scale = 0.5
-            # 超大区域：降采样到50%，极大减小文件大小            
-            new_width = int(width * 1)
-            new_height = int(height * 1)
-            quality = 95  # 较高质量压缩
         elif size_category == 'large':
-            # 大区域：降采样到60%，显著优化文件大小
+            scale = 0.6
-            new_width = int(width * 1)
+        elif size_category == 'medium':
-            new_height = int(height * 1)
+            scale = 0.75
-            quality = 95  # 较高质量压缩
+        else:
-        elif size_category == 'medium': #足部视频录屏·中等区域
+            scale = 0.85
-            # 中等区域：降采样到75%，适度优化            
-            new_width = int(width * 1)
-            new_height = int(height * 1)
-            quality = 100  # 较高质量压缩
-        else:  # small
-            # 小区域：降采样到85%，轻度优化
-            new_width = int(width * 1)
-            new_height = int(height * 1)
-            quality = 100  # 较高质量压缩
-        
-        # 应用降采样
-        frame = cv2.resize(frame, (new_width, new_height), interpolation=cv2.INTER_AREA)
-        self.logger.debug(f"{recording_type}区域降采样({size_category}): {width}x{height} -> {new_width}x{new_height}")
-        
-        # 应用激进的JPEG压缩以进一步减小文件大小
-        encode_param = [int(cv2.IMWRITE_JPEG_QUALITY), quality]
-        _, encoded_frame = cv2.imencode('.jpg', frame, encode_param)
-        frame = cv2.imdecode(encoded_frame, cv2.IMREAD_COLOR)
-        
-        # 重要：将帧尺寸调整回VideoWriter期望的原始尺寸
-        # 这样可以保持压缩优化的同时确保与VideoWriter兼容
-        frame = cv2.resize(frame, (width, height), interpolation=cv2.INTER_LINEAR)
 
+        if scale < 1.0:
+            new_width = max(1, int(width * scale))
+            new_height = max(1, int(height * scale))
+            downsampled = cv2.resize(frame, (new_width, new_height), interpolation=cv2.INTER_AREA)
+            self.logger.debug(f"{recording_type}区域降采样({size_category}): {width}x{height} -> {new_width}x{new_height}")
+            frame = cv2.resize(downsampled, (width, height), interpolation=cv2.INTER_LINEAR)
         return frame
 
+    def _start_shared_screen_capture(self, fps: int):
+        """启动共享屏幕采集线程，单次采集整屏并供各录制线程区域裁剪使用"""
+        # 如果线程已在运行，直接返回
+        if self._shared_screen_thread and self._shared_screen_thread.is_alive():
+            return
+
+        self._screen_capture_stop_event.clear()
+
+        def _capture_loop():
+            interval = 1.0 / max(1, fps)
+            while not self._screen_capture_stop_event.is_set() and self.sync_recording:
+                start_t = time.time()
+                try:
+                    screenshot = pyautogui.screenshot()  # 全屏一次采集
+                    full_frame = cv2.cvtColor(np.array(screenshot), cv2.COLOR_RGB2BGR)
+                    with self._screen_frame_lock:
+                        self._latest_screen_frame = full_frame
+                        self._latest_screen_time = start_t
+                    # 通知有新帧
+                    self._screen_frame_event.set()
+                except Exception as e:
+                    self.logger.error(f'共享屏幕采集错误: {e}')
+                    time.sleep(0.01)
+                # 精确控制帧率
+                elapsed = time.time() - start_t
+                sleep_t = interval - elapsed
+                if sleep_t > 0:
+                    time.sleep(sleep_t)
+
+        self._shared_screen_thread = threading.Thread(target=_capture_loop, daemon=True, name='SharedScreenCaptureThread')
+        self._shared_screen_thread.start()
+
+    def _stop_shared_screen_capture(self):
+        """停止共享屏幕采集线程并清理资源"""
+        self._screen_capture_stop_event.set()
+        if self._shared_screen_thread and self._shared_screen_thread.is_alive():
+            self._shared_screen_thread.join(timeout=2.0)
+        self._shared_screen_thread = None
+        with self._screen_frame_lock:
+            self._latest_screen_frame = None
+            self._latest_screen_time = 0.0
+        self._screen_frame_event.clear()
+
+    def _get_latest_screen_frame(self):
+        """线程安全获取最新整屏帧"""
+        with self._screen_frame_lock:
+            return None if self._latest_screen_frame is None else self._latest_screen_frame.copy()
+
+    def _get_primary_screen_bounds(self) -> Dict[str, int]:
+        try:
+            import ctypes
+            user32 = ctypes.windll.user32
+            w = user32.GetSystemMetrics(0)
+            h = user32.GetSystemMetrics(1)
+            return {'x': 0, 'y': 0, 'width': int(w), 'height': int(h)}
+        except Exception:
+            sw, sh = self.screen_size
+            return {'x': 0, 'y': 0, 'width': int(sw), 'height': int(sh)}
+
+    def _get_virtual_desktop_bounds(self) -> Dict[str, int]:
+        try:
+            import ctypes
+            user32 = ctypes.windll.user32
+            x = user32.GetSystemMetrics(76)  # SM_XVIRTUALSCREEN
+            y = user32.GetSystemMetrics(77)  # SM_YVIRTUALSCREEN
+            w = user32.GetSystemMetrics(78)  # SM_CXVIRTUALSCREEN
+            h = user32.GetSystemMetrics(79)  # SM_CYVIRTUALSCREEN
+            return {'x': int(x), 'y': int(y), 'width': int(w), 'height': int(h)}
+        except Exception:
+            # 回退：使用主屏尺寸，从(0,0)开始
+            sw, sh = self.screen_size
+            return {'x': 0, 'y': 0, 'width': int(sw), 'height': int(sh)}
+
+    def start_recording_ffmpeg(self, session_id: str, patient_id: str, screen_location: List[int], fps: int = None) -> Dict[str, Any]:
+        result = {'success': False, 'message': ''}
+        try:
+            x, y, w, h = screen_location
+            bounds = self._get_primary_screen_bounds()
+            x_clamped = max(bounds['x'], min(int(x), bounds['x'] + bounds['width'] - 1))
+            y_clamped = max(bounds['y'], min(int(y), bounds['y'] + bounds['height'] - 1))
+            max_w = (bounds['x'] + bounds['width']) - x_clamped
+            max_h = (bounds['y'] + bounds['height']) - y_clamped
+            w_clamped = max(1, min(int(w), int(max_w)))
+            h_clamped = max(1, min(int(h), int(max_h)))
+            off_x = x_clamped - bounds['x']
+            off_y = y_clamped - bounds['y']
+            
+            file_dir = self.config_manager.get_config_value('FILEPATH', 'path')
+            timestamp = datetime.now().strftime('%H%M%S%f')[:-3]
+            base_path = os.path.join(file_dir, patient_id, session_id, f'video_{timestamp}')
+            os.makedirs(base_path, exist_ok=True)
+            screen_video_path = os.path.join(base_path, 'screen.mp4')
+            target_fps = fps or self.screen_fps
+            ffmpeg_path = None
+            if self.config_manager:
+                ffmpeg_path = (
+                    self.config_manager.get_config_value('SCREEN_RECORDING', 'ffmpeg_path', fallback=None) or
+                    self.config_manager.get_config_value('RECORDING', 'ffmpeg_path', fallback=None)
+                )
+            if not ffmpeg_path or not os.path.isfile(str(ffmpeg_path)):
+                base_dir = os.path.dirname(sys.executable) if getattr(sys, 'frozen', False) else os.path.dirname(os.path.abspath(__file__))
+                alt_path = os.path.join(base_dir, 'ffmpeg', 'bin', 'ffmpeg.exe')
+                if os.path.isfile(alt_path):
+                    ffmpeg_path = alt_path
+                else:
+                    result['message'] = '未配置有效的ffmpeg_path，请在配置中设置 SCREEN_RECORDING.ffmpeg_path 或 RECORDING.ffmpeg_path'
+                    return result
+
+            cmd = [
+                str(ffmpeg_path),
+                '-y',
+                '-f', 'gdigrab',
+                '-framerate', str(target_fps),
+                '-draw_mouse', str(int((self.config_manager.get_config_value('SCREEN_RECORDING', 'ffmpeg_draw_mouse', fallback='0') or '0'))),
+                '-offset_x', str(off_x),
+                '-offset_y', str(off_y),
+                '-video_size', f'{w_clamped}x{h_clamped}',
+                '-i', 'desktop',
+            ]
+
+            codec = (self.config_manager.get_config_value('SCREEN_RECORDING', 'ffmpeg_codec', fallback=None) or
+                     self.config_manager.get_config_value('RECORDING', 'ffmpeg_codec', fallback=None) or
+                     'libx264')
+            preset = (self.config_manager.get_config_value('SCREEN_RECORDING', 'ffmpeg_preset', fallback=None) or
+                      self.config_manager.get_config_value('RECORDING', 'ffmpeg_preset', fallback=None) or
+                      ('p1' if codec == 'h264_nvenc' else 'ultrafast'))
+            threads = int((self.config_manager.get_config_value('SCREEN_RECORDING', 'ffmpeg_threads', fallback='2') or '2'))
+            bframes = int((self.config_manager.get_config_value('SCREEN_RECORDING', 'ffmpeg_bframes', fallback='0') or '0'))
+            gop = int((self.config_manager.get_config_value('SCREEN_RECORDING', 'ffmpeg_gop', fallback=str(max(1, int(target_fps*2)))) or str(max(1, int(target_fps*2)))))
+
+            cmd += ['-c:v', codec]
+            # 统一的低CPU选项
+            cmd += ['-preset', str(preset)]
+            cmd += ['-bf', str(bframes)]
+            cmd += ['-g', str(gop)]
+            cmd += ['-pix_fmt', 'yuv420p']
+            cmd += ['-threads', str(threads)]
+            cmd += ['-r', str(target_fps)]
+            cmd += [screen_video_path]
+            proc = subprocess.Popen(
+                cmd,
+                stdin=subprocess.PIPE,
+                stdout=subprocess.DEVNULL,
+                stderr=subprocess.DEVNULL,
+                creationflags=getattr(subprocess, 'CREATE_NEW_PROCESS_GROUP', 0)
+            )
+            self._ffmpeg_processes['screen'] = proc
+            self._ffmpeg_meta['screen'] = {'base_path': base_path, 'patient_id': patient_id, 'session_id': session_id, 'video_path': screen_video_path}
+            result['success'] = True
+            result['message'] = 'ffmpeg录制已启动'
+            result['database_updates'] = {
+                'session_id': session_id,
+                'status': 'recording',
+                'video_paths': {
+                    'screen_video_path': os.path.relpath(screen_video_path, file_dir)
+                }
+            }
+            return result
+        except Exception as e:
+            result['message'] = f'ffmpeg启动失败: {e}'
+            return result
+
+    def stop_recording_ffmpeg(self, session_id: str = None) -> Dict[str, Any]:
+        result = {'success': False, 'message': ''}
+        try:
+            proc = self._ffmpeg_processes.get('screen')
+            meta = self._ffmpeg_meta.get('screen')
+            if proc:
+                try:
+                    if proc.stdin and proc.poll() is None:
+                        try:
+                            proc.communicate(input=b'q', timeout=2.0)
+                        except Exception:
+                            pass
+                    try:
+                        proc.send_signal(getattr(signal, 'CTRL_BREAK_EVENT', signal.SIGTERM))
+                    except Exception:
+                        pass
+                    try:
+                        proc.terminate()
+                    except Exception:
+                        pass
+                    try:
+                        proc.wait(timeout=3.0)
+                    except Exception:
+                        try:
+                            proc.kill()
+                        except Exception:
+                            pass
+                finally:
+                    self._ffmpeg_processes.pop('screen', None)
+            result['success'] = True
+            result['message'] = 'ffmpeg录制已停止'
+            if meta:
+                result['database_updates'] = {
+                    'session_id': meta.get('session_id'),
+                    'status': 'recorded'
+                }
+            return result
+        except Exception as e:
+            result['message'] = f'ffmpeg停止失败: {e}'
+            return result
+
+    def start_recording_threaded(self, session_id: str, patient_id: str, screen_location: List[int], fps: int = None) -> Dict[str, Any]:
+        result = {'success': False, 'message': ''}
+        try:
+            x, y, w, h = screen_location
+            file_dir = self.config_manager.get_config_value('FILEPATH', 'path')
+            timestamp = datetime.now().strftime('%H%M%S%f')[:-3]
+            base_path = os.path.join(file_dir, patient_id, session_id, f'video_{timestamp}')
+            os.makedirs(base_path, exist_ok=True)
+            screen_video_path = os.path.join(base_path, 'screen.mp4')
+            target_fps = fps or self.screen_fps
+            try:
+                fourcc = cv2.VideoWriter_fourcc(*'avc1')
+            except Exception:
+                try:
+                    fourcc = cv2.VideoWriter_fourcc(*'H264')
+                except Exception:
+                    fourcc = cv2.VideoWriter_fourcc(*'mp4v')
+            vw = cv2.VideoWriter(screen_video_path, fourcc, target_fps, (w, h))
+            if not vw or not vw.isOpened():
+                result['message'] = 'VideoWriter初始化失败'
+                return result
+            q = queue.Queue(maxsize=target_fps * 2)
+            stop_event = threading.Event()
+            self._threaded_queues['screen'] = q
+            self._threaded_stop_events['screen'] = stop_event
+
+            def _capture():
+                self._start_shared_screen_capture(target_fps)
+                while not stop_event.is_set():
+                    full = self._get_latest_screen_frame()
+                    if full is None:
+                        time.sleep(0.001)
+                        continue
+                    H, W = full.shape[:2]
+                    x0 = max(0, min(x, W - 1))
+                    y0 = max(0, min(y, H - 1))
+                    x1 = max(0, min(x0 + w, W))
+                    y1 = max(0, min(y0 + h, H))
+                    if x1 > x0 and y1 > y0:
+                        crop = full[y0:y1, x0:x1]
+                        if crop.shape[1] != w or crop.shape[0] != h:
+                            frame = cv2.resize(crop, (w, h), interpolation=cv2.INTER_AREA)
+                        else:
+                            frame = crop
+                        try:
+                            q.put_nowait(frame)
+                        except Exception:
+                            try:
+                                _ = q.get_nowait()
+                            except Exception:
+                                pass
+                            try:
+                                q.put_nowait(frame)
+                            except Exception:
+                                pass
+                    else:
+                        time.sleep(0.002)
+
+            def _writer():
+                last = time.time()
+                interval = 1.0 / max(1, target_fps)
+                while not stop_event.is_set():
+                    try:
+                        frame = q.get(timeout=0.05)
+                    except Exception:
+                        frame = None
+                    now = time.time()
+                    if frame is not None:
+                        vw.write(frame)
+                    else:
+                        if now - last < interval:
+                            time.sleep(interval - (now - last))
+                    last = now
+                try:
+                    vw.release()
+                except Exception:
+                    pass
+
+            t1 = threading.Thread(target=_capture, daemon=True, name='ThreadedScreenCapture')
+            t2 = threading.Thread(target=_writer, daemon=True, name='ThreadedScreenWriter')
+            self._threaded_threads['screen'] = (t1, t2)
+            t1.start(); t2.start()
+            result['success'] = True
+            result['message'] = '线程录制已启动'
+            result['database_updates'] = {
+                'session_id': session_id,
+                'status': 'recording',
+                'video_paths': {
+                    'screen_video_path': os.path.relpath(screen_video_path, file_dir)
+                }
+            }
+            return result
+        except Exception as e:
+            result['message'] = f'线程录制启动失败: {e}'
+            return result
+
+    def stop_recording_threaded(self, session_id: str = None) -> Dict[str, Any]:
+        result = {'success': False, 'message': ''}
+        try:
+            stop_event = self._threaded_stop_events.get('screen')
+            threads = self._threaded_threads.get('screen')
+            if stop_event:
+                stop_event.set()
+            if threads:
+                for t in threads:
+                    try:
+                        t.join(timeout=2.0)
+                    except Exception:
+                        pass
+                self._threaded_threads.pop('screen', None)
+            self._stop_shared_screen_capture()
+            result['success'] = True
+            result['message'] = '线程录制已停止'
+            return result
+        except Exception as e:
+            result['message'] = f'线程录制停止失败: {e}'
+            return result
+    
     def start_recording(self, session_id: str, patient_id: str, screen_location: List[int], camera1_location: List[int], camera2_location: List[int], femtobolt_location: List[int], recording_types: List[str] = None) -> Dict[str, Any]:
         """
         启动同步录制
@@ -288,7 +609,7 @@ class RecordingManager:
                 return result
             
             # 设置默认录制类型
-            recording_types = ['screen', 'camera1',"camera2"]           
+            recording_types = ['screen'] 
             
             # 验证录制区域参数（仅对启用的录制类型进行验证）
             if 'screen' in recording_types:
@@ -324,6 +645,21 @@ class RecordingManager:
             self.camera2_region = tuple(camera2_location)  # [x, y, w, h] -> (x, y, w, h)
             self.femtobolt_region = tuple(femtobolt_location)  # [x, y, w, h] -> (x, y, w, h)
             
+            strategy = None
+            if self.config_manager:
+                strategy = (
+                    self.config_manager.get_config_value('SCREEN_RECORDING', 'strategy', fallback=None) or
+                    self.config_manager.get_config_value('RECORDING', 'screen_strategy', fallback=None)
+                )
+            if strategy:
+                strategy = str(strategy).lower()
+            if strategy in ['ffmpeg', 'threaded']:
+                self.sync_recording = True
+                if strategy == 'ffmpeg':
+                    return self.start_recording_ffmpeg(session_id, patient_id, screen_location, fps=self.screen_fps)
+                else:
+                    return self.start_recording_threaded(session_id, patient_id, screen_location, fps=self.screen_fps)
+            
             # 根据录制区域大小设置自适应帧率
             if 'screen' in recording_types:
                 self._set_adaptive_fps_by_region('screen', self.screen_region)
@@ -371,10 +707,10 @@ class RecordingManager:
                 'session_id': session_id,
                 'status': 'recording',
                 'video_paths': {
-                    'camera1_video_path': os.path.join(db_base_path, 'camera1.mp4'),
+                    'camera1_video_path': None,
-                    'camera2_video_path': os.path.join(db_base_path, 'camera2.mp4'),
+                    'camera2_video_path': None,
                     'screen_video_path': os.path.join(db_base_path,  'screen.mp4'),
-                    'femtobolt_video_path': os.path.join(db_base_path,  'femtobolt.mp4')
+                    'femtobolt_video_path': None
                 }
             }
             self.logger.debug(f'数据库更新信息已准备 - 会话ID: {session_id}')
@@ -461,6 +797,20 @@ class RecordingManager:
             self.recording_stop_event.clear()
             self.sync_recording = True
 
+            # 启动共享屏幕采集（取所需类型的最大帧率）
+            max_needed_fps = 0
+            for t in recording_types:
+                if t == 'screen':
+                    max_needed_fps = max(max_needed_fps, self.screen_current_fps)
+                elif t == 'camera1':
+                    max_needed_fps = max(max_needed_fps, self.camera1_current_fps)
+                elif t == 'camera2':
+                    max_needed_fps = max(max_needed_fps, self.camera2_current_fps)
+                elif t == 'femtobolt':
+                    max_needed_fps = max(max_needed_fps, self.femtobolt_current_fps)
+            if max_needed_fps > 0:
+                self._start_shared_screen_capture(max_needed_fps)
+            
             # 根据录制类型启动对应的录制线程
             if 'camera1' in recording_types and self.camera1_video_writer and self.camera1_video_writer.isOpened():
                 self.camera1_recording_thread = threading.Thread(
@@ -542,6 +892,26 @@ class RecordingManager:
                 result['message'] = '当前没有进行录制'
                 return result
             
+            strategy = None
+            if self.config_manager:
+                strategy = (
+                    self.config_manager.get_config_value('SCREEN_RECORDING', 'strategy', fallback=None) or
+                    self.config_manager.get_config_value('RECORDING', 'screen_strategy', fallback=None)
+                )
+            if strategy:
+                strategy = str(strategy).lower()
+            if strategy in ['ffmpeg', 'threaded']:
+                self.sync_recording = False
+                self.recording_stop_event.set()
+                if strategy == 'ffmpeg':
+                    res = self.stop_recording_ffmpeg(session_id)
+                else:
+                    res = self.stop_recording_threaded(session_id)
+                self.current_session_id = None
+                self.current_patient_id = None
+                self.recording_start_time = None
+                return res
+
             # 记录停止时间，确保所有录制线程同时结束
             recording_stop_time = time.time()
             self.logger.info(f'开始停止录制，停止时间: {recording_stop_time}')
@@ -595,6 +965,8 @@ class RecordingManager:
             
             # 清理视频写入器
             self._cleanup_video_writers()
+            # 停止共享屏幕采集
+            self._stop_shared_screen_capture()
             
             # 准备数据库更新信息，返回给调用方统一处理
             if self.current_session_id:
@@ -691,10 +1063,33 @@ class RecordingManager:
                     
                     frame = None
                     
-                    # 获取帧数据 - 从屏幕截图生成
+                    # 获取帧数据 - 从共享整屏帧进行区域裁剪
-                    screenshot = pyautogui.screenshot(region=(x, y, w, h))
+                    full_frame = self._get_latest_screen_frame()
-                    frame = cv2.cvtColor(np.array(screenshot), cv2.COLOR_RGB2BGR)
+                    if full_frame is None:
-                    frame = cv2.resize(frame, (w, h))
+                        # 若共享帧尚未就绪，退化为单次全屏采集
+                        try:
+                            screenshot = pyautogui.screenshot()
+                            full_frame = cv2.cvtColor(np.array(screenshot), cv2.COLOR_RGB2BGR)
+                        except Exception as e:
+                            self.logger.error(f'{recording_type}备用屏幕采集失败: {e}')
+                            full_frame = None
+
+                    if full_frame is not None:
+                        H, W = full_frame.shape[:2]
+                        x0 = max(0, min(x, W-1))
+                        y0 = max(0, min(y, H-1))
+                        x1 = max(0, min(x0 + w, W))
+                        y1 = max(0, min(y0 + h, H))
+                        if x1 > x0 and y1 > y0:
+                            crop = full_frame[y0:y1, x0:x1]
+                            if (x1 - x0) != w or (y1 - y0) != h:
+                                frame = cv2.resize(crop, (w, h), interpolation=cv2.INTER_AREA)
+                            else:
+                                frame = crop
+                        else:
+                            frame = None
+                    else:
+                        frame = None
                     
                     # 对所有区域录制进行优化以减小文件大小
                     frame = self._optimize_frame_for_large_region(frame, region, recording_type)

backend/main.py

@@ -1525,7 +1525,7 @@ class AppServer:
                         return jsonify({'success': False, 'error': f'删除文件失败: {str(e)}'}), 500
                 
                 # 更新数据库
-                self.db_manager.update_session_report_path(session_id, None)
+                self.db_manager.delete_session_report_path(session_id)
                 
                 return jsonify({'success': True, 'message': '报告已删除'})
                 

frontend/src/renderer/main/main.js

@@ -7,13 +7,8 @@ const { spawn } = require('child_process');
 let mainWindow;
 let localServer;
 let backendProcess;
-
- app.disableDomainBlockingFor3DAPIs();
 // app.disableHardwareAcceleration();
- app.commandLine.appendSwitch('ignore-gpu-blocklist');
+app.disableDomainBlockingFor3DAPIs();
- app.commandLine.appendSwitch('enable-webgl');
- app.commandLine.appendSwitch('use-angle', 'd3d11');
-
 ipcMain.handle('generate-report-pdf', async (event, payload) => {
   const win = BrowserWindow.fromWebContents(event.sender);
   if (!win) throw new Error('窗口未找到');