将 OpenGL 与 RtAudio(或端口音频）同步

我需要用节拍器与OpenGL同步一些绘图。节拍器是用libPD构建的，用RtAudio播放。这两件事都运行良好(单独(，但我需要移动一个物体(三角形(，脉冲节拍器。应用程序也必须播放单击。这两个动作必须并行完成(播放和绘图(。我也应该添加一个 midi 记录。我的申请处于C++状态。我尝试用一个线程运行它，但它不起作用。我尝试遵循以下解释：如何使我的节拍器与在我的程序中录制的同时播放？GUI库是WxWidgets。线程是用 Poco：：Runnable 以这种方式完成的：

class MyThread : public Poco::Runnable {
public:
    MyThread(BasicGLPane *pane, std::shared_ptr<SoundManager> man);
    virtual void run();
private:
    BasicGLPane *_pane;
    std::shared_ptr<SoundManager> _man;
};
MyThread::MyThread(BasicGLPane *pane, std::shared_ptr<SoundManager> man) {
    _pane = pane;
    _man = man;
}

void MyThread::run() {
    _man->play();
    _pane->startAnimation();    
}

BasicGLpane是一个wxGLCanvas。声音管理器类的播放功能如下：

void SoundManager::play() {
    // Init pd
    if(!lpd->init(0, 2, sampleRate)) {
        std::cerr << "Could not init pd" << std::endl;
        exit(1);
    }    
    // Receive messages from pd
    lpd->setReceiver(object.get());
    lpd->subscribe("metro-bang");
    lpd->subscribe("switch");
    // send DSP 1 message to pd
    lpd->computeAudio(true);
    // load the patch
    open_patch("metro-main.pd");
    std::cout << patch << std::endl;    
    // Use the RtAudio API to connect to the default audio device.
    if(audio->getDeviceCount()==0){
        std::cout << "There are no available sound devices." << std::endl;
        exit(1);
    }
    RtAudio::StreamParameters parameters;
    parameters.deviceId = audio->getDefaultOutputDevice();
    parameters.nChannels = 2;
    RtAudio::StreamOptions options;
    options.streamName = "Pd Metronome";
    options.flags = RTAUDIO_SCHEDULE_REALTIME;
    if ( audio->getCurrentApi() != RtAudio::MACOSX_CORE ) {
        options.flags |= RTAUDIO_MINIMIZE_LATENCY; // CoreAudio doesn't seem to like this
    }
    try {
        if(audio->isStreamOpen()) {
            audio->closeStream();
        }
        else {
            audio->openStream( &parameters, NULL, RTAUDIO_FLOAT32, sampleRate, &bufferFrames, &audioCallback, lpd.get(), &options );
            audio->startStream();
        }
    }
    catch ( RtAudioError& e ) {
        std::cerr << e.getMessage() << std::endl;
        exit(1);
    }  
}

OpenGL 绘图方法如下：

void BasicGLPane::startAnimation() {
    std::cout<<"Start Animation"<<std::endl;
    triangle_1(p1, p2, p3);    
    Refresh();
}
void BasicGLPane::triangle_1(std::shared_ptr<vertex2f> _p1, std::shared_ptr<vertex2f> _p2, std::shared_ptr<vertex2f> _p3) {
    CGLContextObj ctx = CGLGetCurrentContext(); //enable multithreading (only apple) 
    CGLError err = CGLEnable( ctx, kCGLCEMPEngine);
    if (err != kCGLNoError ) {
        glEnable(GL_MULTISAMPLE);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        glOrtho(0, getWidth(), getHeight(),0 , -1, 1);
        glShadeModel(GL_SMOOTH);
        glBegin(GL_POLYGON);                      // Drawing Using Triangles
        glColor3f (157.0/255.0, 44.0/255.0, 44.0/255.0);
        glVertex3f( p1->x, p1->y, 0.0f);              // Top left
        glVertex3f(p2->x,p2->y, 0.0f);              // Top Right
        glVertex3f( p3->x,p3->y, 0.0f);               //Bottom
        glEnd();
        glMatrixMode(GL_MODELVIEW);
        glEnable (GL_BLEND);
        glLoadIdentity();
        glDisable(GL_MULTISAMPLE);
    }
}

线程使用以下功能调用：

void BasicGLPane::startThread() {
    while (_object->getCounter()<10) { //this is only to test the functionality
        thread.start(work);
    }
    thread.join();
    manager->stop();
}

之后，这个功能在 Reder 中被调用：

void BasicGLPane::render( wxPaintEvent& evt ) {
    //some code here, not important....
    startThread();
    SwapBuffers();
}

也许我要改变这个对象，现在不重要了，我的问题是同步。我认为RtAudio正在制造问题，因为我成为获取DeviceCount((或RtAudio任何其他功能的EXC_BAD_Acces。这仅在线程上下文中发生。最好用端口音频来做？。很高兴知道我做错了什么，或者是否有其他方法可以解决这个问题