Eventloop 卡住:NAO C++ SDK OnFaceDetection 示例

我在MAC上安装了NAOqi C++ SDK，并尝试了SDK中的一些示例。HelloWorld-Example工作正常，但是使用OnFaceDetection-Example，在NAO检测到我的脸后，我将收到带有qi.eventloop的错误/警告。

Narongsones-MacBook-Pro:bin Narongsone$ ./onfacedetection --pip 192.168.1.138
[I] 1295 core.common.toolsmain: ..::: starting onfacedetection :::..
[I] 1295 core.common.toolsmain: Connecting to 192.168.1.138:9559...
[I] 1295 qimessaging.session: Session listener created on tcp://0.0.0.0:0
[I] 1295 qimessaging.transportserver: TransportServer will listen on:    tcp://192.168.1.136:64881
[I] 1295 qimessaging.transportserver: TransportServer will listen on: tcp://127.0.0.1:64881
[I] 1295 core.common.toolsmain: Connection with 192.168.1.138:9559 established
[I] 1295 module.example: No face detected
[I] 1295 core.common.toolsmain: onfacedetection is ready... Press CTRL^C to quit
[I] 3843 module.name: 1 face(s) detected.

[I] 4355 qi.eventloop： eventloop： 生成更多线程 (5(

[I] 4355 qi.eventloop： eventloop： 生成更多线程 (6(

[I] 4355 qi.eventloop： eventloop： 生成更多线程 (7(

[I] 4355 qi.eventloop： eventloop： 生成更多线程 (8(

[I] 4355 qi.eventloop： eventloop： 生成更多线程 (9(

[I] 4355 qi.eventloop： eventloop： 生成更多线程 (10(

如果您对问题是什么有任何想法，请帮助我。谢谢！

我的回调函数：

void OnFaceDetection::callback() {
/** Use a mutex to make it all thread safe. */
AL::ALCriticalSection section(fCallbackMutex);
try {
/** Retrieve the data raised by the event. */
fFaces = fMemoryProxy.getData("FaceDetected");
/** Check that there are faces effectively detected. */
if (fFaces.getSize() < 2 ) {
if (fFacesCount != 0) {
qiLogInfo("module.example") << "No face detected" << std::endl;
fTtsProxy.say("No face detected.");
fFacesCount = 0;
}
return;
}
/** Check the number of faces from the FaceInfo field, and check that it has
* changed from the last event.*/
if (fFaces[1].getSize() - 1 != fFacesCount) {
qiLogInfo("module.name") << fFaces[1].getSize() - 1 << " face(s) detected." << std::endl;
char buffer[50];
sprintf(buffer, "%d faces detected.", fFaces[1].getSize() - 1);
fTtsProxy.say(std::string(buffer));
/** Update the current number of detected faces. */
fFacesCount = fFaces[1].getSize() - 1;
}
}
catch (const AL::ALError& e) {
qiLogError("module.name") << e.what() << std::endl;
}
}