析构函数bug修复

camhandler.cpp

@@ -24,7 +24,41 @@ CamHandler::~CamHandler()
 {
     // 确保在销毁对象时清理资源
     if (mStream) {
-        stopAcquisition(); // 确保流和缓冲区已清理
+        if (!mDevice || !mStream)
+            return;
+
+        // 1. 停止计时器
+        if (mAcquireTimer.isActive()) {
+            mAcquireTimer.stop();
+            // emit logMsg("Acquisition timer stopped.");
+        }
+
+        // 2. 获取 AcquisitionStop 命令
+        PvGenParameterArray *lDeviceParams = mDevice->GetParameters();
+        PvGenCommand *lStop = dynamic_cast<PvGenCommand *>(lDeviceParams->Get("AcquisitionStop"));
+
+        // 3. 停止采集和禁用流
+        if (lStop != nullptr) {
+            // emit logMsg("Sending AcquisitionStop command to the device");
+            lStop->Execute();
+        }
+        // emit logMsg("Disable streaming on the controller.");
+        mDevice->StreamDisable();
+
+        // 4. 清理缓冲区：终止队列中的所有缓冲区并将它们移到输出队列
+        // emit logMsg("Aborting buffers still in stream");
+        mStream->AbortQueuedBuffers();
+
+        // 5. 从输出队列中检索剩余的缓冲区，丢弃它们
+        PvBuffer *lBuffer = NULL;
+        PvResult lOperationResult;
+        // 必须清空队列，防止下次采集时使用错误的旧缓冲区
+        while (mStream->GetQueuedBufferCount() > 0) {
+            mStream->RetrieveBuffer(&lBuffer, &lOperationResult);
+            // 注意：这里没有释放 lBuffer，因为缓冲区资源将在析构或断开时处理
+        }
+
+        // emit logMsg("Acquisition stopped and buffers cleaned up.");
         mStream->Close();
         PvStream::Free(mStream);
         mStream = nullptr;