am a9f27fa6: Merge "Protect notification callback parameters with a mutex." into honeycomb

    virtual status_t    setLooping(int loop) = 0;

    virtual player_type playerType() = 0;

    virtual void        setNotifyCallback(void* cookie, notify_callback_f notifyFunc) {

                            mCookie = cookie; mNotify = notifyFunc; }

    // Invoke a generic method on the player by using opaque parcels

    // for the request and reply.

    //

        return INVALID_OPERATION;

    };

    virtual void        sendEvent(int msg, int ext1=0, int ext2=0) { if (mNotify) mNotify(mCookie, msg, ext1, ext2); }

    void        setNotifyCallback(

            void* cookie, notify_callback_f notifyFunc) {

        Mutex::Autolock autoLock(mNotifyLock);

        mCookie = cookie; mNotify = notifyFunc;

    }

protected:

    void        sendEvent(int msg, int ext1=0, int ext2=0) {

        Mutex::Autolock autoLock(mNotifyLock);

        if (mNotify) mNotify(mCookie, msg, ext1, ext2);

    }

private:

    friend class MediaPlayerService;

    Mutex               mNotifyLock;

    void*               mCookie;

    notify_callback_f   mNotify;

};