From 8b4061609304743e4082e02f8c91e5ba0fd3c2a3 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sat, 6 Jul 2013 17:04:08 +0200
Subject: Remove data race between UI and tracker thread

---
 facetracknoir/tracker.cpp | 4 ++++
 facetracknoir/tracker.h   | 1 +
 2 files changed, 5 insertions(+)

(limited to 'facetracknoir')

diff --git a/facetracknoir/tracker.cpp b/facetracknoir/tracker.cpp
index e34bf25e..93b09792 100644
--- a/facetracknoir/tracker.cpp
+++ b/facetracknoir/tracker.cpp
@@ -119,6 +119,8 @@ void Tracker::run() {
 	{
         if (should_quit)
             break;
+        
+        QMutexLocker foo(&mtx);
 
         for (int i = 0; i < 6; i++)
             newpose[i] = 0;
@@ -214,6 +216,7 @@ void Tracker::run() {
 // Get the raw headpose, so it can be displayed.
 //
 void Tracker::getHeadPose( double *data ) {
+    QMutexLocker foo(&mtx);
     for (int i = 0; i < 6; i++)
     {
         data[i] = mainApp->axis(i).headPos;
@@ -224,6 +227,7 @@ void Tracker::getHeadPose( double *data ) {
 // Get the output-headpose, so it can be displayed.
 //
 void Tracker::getOutputHeadPose( double *data ) {
+    QMutexLocker foo(&mtx);
     for (int i = 0; i < 6; i++)
         data[i] = output_camera.axes[i];
 }
diff --git a/facetracknoir/tracker.h b/facetracknoir/tracker.h
index de894cf5..f452395d 100644
--- a/facetracknoir/tracker.h
+++ b/facetracknoir/tracker.h
@@ -109,6 +109,7 @@ class Tracker : public QThread {
 
 private:
     FaceTrackNoIR *mainApp;
+    QMutex mtx;
 
 protected:
 	// qthread override run method 
-- 
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