* Fixed bug crashing when SyncCtrlObj is deleted before CtAcquisition

control/src/CtAcquisition.cpp

@@ -144,7 +144,6 @@ CtAcquisition::CtAcquisition(HwInterface *hw) :
 CtAcquisition::~CtAcquisition()
 {
   DEB_DESTRUCTOR();
-  m_hw_sync->unregisterValidRangesCallback(m_valid_ranges_cb);
   delete m_valid_ranges_cb;
 }
 

hardware/include/lima/HwSyncCtrlObj.h

@@ -70,12 +70,14 @@ public:
 	class ValidRangesCallback
 	{
 	  DEB_CLASS(DebModHardware,"HwSyncCtrlObj::ValidRangesCallback");
-
-	  friend class HwSyncCtrlObj;
 	public:
-	  virtual ~ValidRangesCallback() {};
+	  ValidRangesCallback();
+	  virtual ~ValidRangesCallback();
 	protected:
 	  virtual void validRangesChanged(const HwSyncCtrlObj::ValidRangesType&) = 0;
+	private:
+	  friend class HwSyncCtrlObj;
+	  HwSyncCtrlObj*	m_hw_sync;
 	};
 
 	HwSyncCtrlObj();

hardware/sip/HwSyncCtrlObj.sip

@@ -54,6 +54,7 @@ sipRes = tmpString.c_str();
 	class ValidRangesCallback
 	{
 	public:
+	  ValidRangesCallback();
 	  virtual ~ValidRangesCallback();
 	protected:
 	  virtual void validRangesChanged(const HwSyncCtrlObj::ValidRangesType&) = 0;

hardware/src/HwSyncCtrlObj.cpp

@@ -24,16 +24,29 @@
 
 using namespace lima;
 
+HwSyncCtrlObj::ValidRangesCallback::ValidRangesCallback()
+  : m_hw_sync(NULL)
+{
+}
+
+HwSyncCtrlObj::ValidRangesCallback::~ValidRangesCallback()
+{
+  if (m_hw_sync)
+    m_hw_sync->unregisterValidRangesCallback(this);
+}
+
 HwSyncCtrlObj::HwSyncCtrlObj()
   : m_acq_mode(Single),
     m_valid_ranges_cb(NULL)
 {
-	DEB_CONSTRUCTOR();
+  DEB_CONSTRUCTOR();
 }
 
 HwSyncCtrlObj::~HwSyncCtrlObj()
 {
-	DEB_DESTRUCTOR();
+  DEB_DESTRUCTOR();
+  if (m_valid_ranges_cb)
+    unregisterValidRangesCallback(m_valid_ranges_cb);
 }
 
 bool HwSyncCtrlObj::checkAutoExposureMode(AutoExposureMode mode) const
@@ -92,6 +105,7 @@ void HwSyncCtrlObj::registerValidRangesCallback(ValidRangesCallback *cb)
       throw LIMA_CTL_EXC(InvalidValue,"ValidRangesCallback already registered");
     }
 
+  cb->m_hw_sync = this;
   m_valid_ranges_cb = cb;
 }
 
@@ -107,6 +121,7 @@ void HwSyncCtrlObj::unregisterValidRangesCallback(ValidRangesCallback *cb)
     }
 
   m_valid_ranges_cb = NULL;
+  cb->m_hw_sync = NULL;
 }
 
 std::ostream& lima::operator<<(std::ostream& os,const HwSyncCtrlObj::ValidRangesType &range)