added close function for audio interface (this is a preliminary solution for switching off the audio interface when not connected, a better solution would be to implement a stop function but this does not work with our current buffer initialization scheme)

linux/sound.h

@@ -78,9 +78,8 @@ public:
     virtual void Init() { InitRecording(); InitPlayback(); }
     virtual bool Read  ( CVector<short>& psData );
     virtual bool Write ( CVector<short>& psData );
+    virtual void Close();
 
-    void    Close();
-    
 protected:
     void InitRecording();
     void InitPlayback();
@@ -106,7 +105,7 @@ protected:
     virtual void Init() { printf ( "no sound!" ); }
     virtual bool Read  ( CVector<short>& psData ) { printf ( "no sound!" ); return false; }
     virtual bool Write ( CVector<short>& psData ) { printf ( "no sound!" ); return false; }
-    void    Close() {}
+    virtual void Close() {}
 #endif
 };
 

src/soundbase.cpp

@@ -37,16 +37,16 @@ void CSoundBase::Start()
 
 void CSoundBase::Stop()
 {
-
-// TODO stop audio interface (previously done in Close function which is
-// now unused!!!!!!!!!!!
-
-
     // set flag so that thread can leave the main loop
     bRun = false;
 
     // give thread some time to terminate
     wait ( 5000 );
+
+
+// TODO stop audio interface (previously done in Close function, we
+// better should implement a stop function in derived sound classes
+    Close();
 }
 
 void CSoundBase::run()

src/soundbase.h

@@ -44,6 +44,7 @@ public:
     virtual void Start();
     virtual void Stop();
     bool         IsRunning() const { return bRun; }
+    virtual void Close() = 0;
 
 protected:
     // function pointer to callback function

windows/sound.h

@@ -62,6 +62,7 @@ public:
     virtual void Init();
     virtual bool Read  ( CVector<short>& psData );
     virtual bool Write ( CVector<short>& psData );
+    virtual void Close();
 
     int         GetNumDev() { return lNumDevs; }
     std::string GetDeviceName ( const int iDiD ) { return cDriverNames[iDiD]; }
@@ -74,8 +75,6 @@ public:
     void        SetInNumBuf ( const int iNewNum );
     int         GetInNumBuf();
 
-    void        Close();
-
 protected:
     bool        LoadAndInitializeFirstValidDriver();
     std::string LoadAndInitializeDriver ( int iIdx );