From 53f16e314c38700439b5cf58b285b1ea27c4ed53 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sun, 17 Oct 2021 14:30:31 +0200
Subject: tracker/pt: fix deadlock

---
 tracker-pt/ftnoir_tracker_pt.cpp        | 15 +++++++--------
 tracker-pt/ftnoir_tracker_pt_dialog.cpp |  3 ++-
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/tracker-pt/ftnoir_tracker_pt.cpp b/tracker-pt/ftnoir_tracker_pt.cpp
index 4fc6f99a..db2ace64 100644
--- a/tracker-pt/ftnoir_tracker_pt.cpp
+++ b/tracker-pt/ftnoir_tracker_pt.cpp
@@ -54,17 +54,16 @@ void Tracker_PT::run()
     {
         if (reopen_camera_flag)
         {
-            QMutexLocker l(&camera_mtx);
-
             reopen_camera_flag = false;
-            if (camera)
-                camera->stop();
-            camera = traits->make_camera();
-            set_fov(s.fov);
             {
-                if (!camera->start(s))
-                    break;
+                QMutexLocker l(&camera_mtx);
+                camera = nullptr;
             }
+            auto camera_ = traits->make_camera();
+            if (!camera_->start(s))
+                break;
+            camera_->set_fov(s.fov);
+            camera = std::move(camera_);
         }
 
         pt_camera_info info;
diff --git a/tracker-pt/ftnoir_tracker_pt_dialog.cpp b/tracker-pt/ftnoir_tracker_pt_dialog.cpp
index 1afd7ad4..ce300e27 100644
--- a/tracker-pt/ftnoir_tracker_pt_dialog.cpp
+++ b/tracker-pt/ftnoir_tracker_pt_dialog.cpp
@@ -237,7 +237,8 @@ void TrackerDialog_PT::show_camera_settings()
     if (tracker)
     {
         QMutexLocker l(&tracker->camera_mtx);
-        tracker->camera->show_camera_settings();
+        if (tracker->camera)
+            tracker->camera->show_camera_settings();
     }
     else
         (void)video::show_dialog(s.camera_name);
-- 
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