check for connected device in InitCamera

app/SandboxSetup/initcamera.cpp

@@ -9,9 +9,13 @@ CameraStartThread::CameraStartThread(Camera *c) : QThread() {
 
 void CameraStartThread::run() {
 
-    camera->start();
-    camera->warmUpDepthLens();
-    emit setupReady();
+    int err = camera->start();
+    emit deviceFound(err);
+
+    if(!err){
+        camera->warmUpDepthLens();
+        emit setupReady(0);
+    }
 }
 
 
@@ -25,6 +29,7 @@ InitCamera::InitCamera(SandboxSetup *_setup, QWidget *parent) :
     ui->setupUi(this);
 
     workerThread = new CameraStartThread(setup->getCamera());
+    connect(workerThread, &CameraStartThread::deviceFound, this, &InitCamera::deviceFound);
     connect(workerThread, &CameraStartThread::setupReady, this, &InitCamera::setupReady);
     connect(workerThread, &CameraStartThread::finished, workerThread, &QObject::deleteLater);
 }
@@ -48,8 +53,17 @@ void InitCamera::setupCamera(){
     workerThread->start();
 }
 
-void InitCamera::setupReady(){
-    emit sendNotif(0);
+void InitCamera::deviceFound(int err){
+    QString msg = (err) ? "No device found" : "Initializing device...";
+    ui->label->setText(msg);
+
+    if(err)
+        emit sendNotif(err);
+}
+
+void InitCamera::setupReady(int err){
+
+    emit sendNotif(err);
 }
 
 

app/SandboxSetup/initcamera.h

@@ -21,7 +21,8 @@ public:
     void run();
 
 signals:
-    void setupReady();
+    void setupReady(int state);
+    void deviceFound(int err);
 
 private:
     Camera *camera;
@@ -46,7 +47,8 @@ private:
     CameraStartThread *workerThread;
 
     void setupCamera();
-    void setupReady();
+    void setupReady(int state);
+    void deviceFound(int err);
 };
 
 #endif // INITCAMERA_H

app/SandboxSetup/initcamera.ui

@@ -23,7 +23,7 @@
     </rect>
    </property>
    <property name="text">
-    <string>Initializing camera...</string>
+    <string>Checking camera...</string>
    </property>
   </widget>
  </widget>

app/SandboxSetup/mainwindow.cpp

@@ -64,8 +64,12 @@ void MainWindow::receiveNotif(int state){
 
     // active app : InitCamera
     if( strcmp( applist.at(step)->metaObject()->className(), init->metaObject()->className() ) == 0 ){
-        ui->btnNext->setVisible(true);
-        nextApp();
+        if(state){
+            ui->btnFinish->setVisible(true);
+        }else{
+            ui->btnNext->setVisible(true);
+            nextApp();
+        }
     }
     // active app : BeamerLocation
     else if( strcmp( applist.at(step)->metaObject()->className(), bl->metaObject()->className() ) == 0 ){

inc/camera.h

@@ -30,7 +30,7 @@ class Camera{
         void setCroppingMask(cv::Rect mask){ croppingMask = mask; };
         cv::Rect getCroppingMask(){ return croppingMask; };
         
-        void start();
+        int start();
         void warmUpDepthLens();
         void stop();
         cv::Point3f deprojectPixelToPoint(float coord[], float z1);

src/components/camera.cpp

@@ -12,12 +12,12 @@ Camera::Camera() {
 */
 
 
-void Camera::start(){
+int Camera::start(){
     
     // check for a device availible
     if(!cfg.can_resolve(pipe)){
-        std::cout << "Error: No device found" << std::endl;
-        exit(0);
+        //std::cout << "Error: No device found" << std::endl;
+        return 1;
     }
 
     std::remove("./camera.logs");
@@ -35,7 +35,8 @@ void Camera::start(){
     for (auto i = range.min; i < range.max; i += range.step)
         if (std::string(sensor.get_option_value_description(RS2_OPTION_VISUAL_PRESET, i)) == "High Density")
             sensor.set_option(RS2_OPTION_VISUAL_PRESET, i);
-    //warmUpDepthLens();
+
+    return 0;
 }