session volume/mute polling

src/back/backlasses.cpp

@@ -1,6 +1,45 @@
 #include <backlasses.h>
 #include <backfuncs.h>
 
+EndpointNewSessionCallback::EndpointNewSessionCallback(EndpointHandler* eph){
+	this->eph = eph;
+}
+
+ULONG EndpointNewSessionCallback::AddRef(){
+	return InterlockedIncrement(&ref);
+}
+
+ULONG EndpointNewSessionCallback::Release(){
+	ULONG tempRef = InterlockedDecrement(&ref);
+	if (tempRef == 0) {
+		delete this;
+	}
+	return tempRef;
+}
+
+HRESULT EndpointNewSessionCallback::QueryInterface(REFIID riid, VOID **ppvInterface) {
+    if (IID_IUnknown == riid)
+    {
+        AddRef();
+        *ppvInterface = (IUnknown*)this;
+    }
+    else if (__uuidof(IAudioSessionNotification) == riid)
+    {
+        AddRef();
+        *ppvInterface = (IMMNotificationClient*)this;
+    }
+    else
+    {
+        *ppvInterface = NULL;
+        return E_NOINTERFACE;
+    }
+    return S_OK;
+}
+
+HRESULT EndpointNewSessionCallback::OnSessionCreated(IAudioSessionControl *NewSession) {
+	return S_OK;
+}
+
 EndpointVolumeCallback::EndpointVolumeCallback(Endpoint* ep){
 	this->ep = ep;
 }