fmradio/fmradioengine/inc/fmradioaccessoryobserver.h
changeset 0 f3d95d9c00ab
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fmradio/fmradioengine/inc/fmradioaccessoryobserver.h	Tue Feb 02 00:17:10 2010 +0200
@@ -0,0 +1,125 @@
+/*
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Observer of accessory states.
+*
+*/
+
+
+#ifndef CFMRADIOACCESSORYOBSERVER_H
+#define CFMRADIOACCESSORYOBSERVER_H
+
+#include <AccessoryServer.h>
+#include <AccessoryMode.h>
+#include <AccPolAccessoryMode.h>
+
+class MFMRadioHeadsetEventObserver;
+
+/**
+ *  Observer of accessory states.  
+ *
+ *  Instance of this class observes notifications of headset state changes. 
+ *  In its turn it sends notifications to its observer of those changes.
+ *
+ */
+class CFMRadioAccessoryObserver : public CActive
+    {
+public:  
+
+    /**
+     * C++ default constructor.
+     */
+    CFMRadioAccessoryObserver();
+
+    /**
+     * Static constructor.
+     */
+    static CFMRadioAccessoryObserver* NewL();
+    
+    /**
+     * Destructor.
+     */
+    virtual ~CFMRadioAccessoryObserver();
+
+    /**
+     * Sets observer. The observer will be notified when headset has been 
+     * pressed or headset is connected/disconnected.
+      *
+     * @param aObserver Observer
+     */
+    void SetObserver( MFMRadioHeadsetEventObserver* aObserver );
+
+    /**
+     * Returns accessory connection state.
+     *
+     * @return <code>ETrue </code> if accessory is connected, 
+     * <code>EFalse</code> otherwise
+     */
+    TBool IsHeadsetAccessoryConnected() const;
+    
+    // from base class CActive
+    /**
+     * From CActive
+     *
+     * @see CActive::RunL()
+     */    
+    void RunL();
+
+    /**
+     * From CActive
+     *
+     * @see CActive::DoCancel()
+     */        
+    void DoCancel();
+    
+protected:  
+
+private: 
+
+    /**
+     * By default Symbian 2nd phase constructor is private.
+     */
+    void ConstructL();
+
+public:
+
+protected:
+
+    /** 
+     * Instance that gets notifications of the headset state changes 
+     */
+    MFMRadioHeadsetEventObserver* iObserver;
+
+private:    // Data
+
+    /** 
+     * Session for The Accessory Server. 
+     */
+    RAccessoryServer iAccessoryServer;
+    
+    /** 
+     * Accessory Mode sub-session 
+     */            
+    RAccessoryMode          iAccessoryModeSession;
+    
+    
+    /** 
+     * Accessory Mode structure, with active audio information. 
+     */
+    TAccPolAccessoryMode    iAccPolAccessoryMode;
+    TAccPolAccessoryMode    iPrevAccMode;
+    };
+
+#endif      // CFMRADIOACCESSORYOBSERVER_H
+            
+