Bus.hpp

/*
 * If not stated otherwise in this file or this component's Licenses.txt file the
 * following copyright and licenses apply:
 *
 * Copyright 2016 RDK Management
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/
 
 
 
/**
* @defgroup hdmicec
* @{
* @defgroup ccec
* @{
**/
 
 
#ifndef _HDMI_CCEC_BUS_HPP_
#define _HDMI_CCEC_BUS_HPP_
 
#include <list>
 
#include "osal/Mutex.hpp"
#include "osal/Runnable.hpp"
#include "osal/Stoppable.hpp"
#include "osal/Thread.hpp"
#include "osal/EventQueue.hpp"
 
#include "ccec/CCEC.hpp"
 
using CCEC_OSAL::Runnable;
using CCEC_OSAL::Stoppable;
using CCEC_OSAL::EventQueue;
using CCEC_OSAL::Mutex;
 
CCEC_BEGIN_NAMESPACE
 
class CECFrame;
class FrameListener;
 
class Bus {
public:
        static Bus & getInstance(void);
    void addFrameListener(FrameListener *listener);
    void removeFrameListener(FrameListener *listener);
    void send(const CECFrame &frame, int timeout = 0);
    void sendAsync(const CECFrame &frame);
        void poll(const LogicalAddress &from, const LogicalAddress &to);
        void ping(const LogicalAddress &from, const LogicalAddress &to);
 
        void start(void);
        void stop(void);
 
private:
    class Reader : public Runnable, public Stoppable {
    public:
        Reader(Bus &bus) : bus(bus) {}
        void run(void);
        void stop(bool block = true);
    private:
        Bus &bus;
    } reader;
 
    class Writer : public Runnable, public Stoppable {
    public:
        Writer(Bus &bus) : bus(bus) {}
        void run(void);
        void stop(bool block = true);
    private:
        Bus &bus;
    } writer;
 
        Bus(void);
        Bus(const Bus &); /* Not allowed */
        Bus & operator = (const Bus &);  /* Not allowed */
        ~Bus(void);
 
private:
        std::list<FrameListener *> listeners;
        Mutex rMutex;
        Mutex wMutex;
        EventQueue<CECFrame * > wQueue;
        volatile bool started;
};
 
CCEC_END_NAMESPACE
 
 
#endif
 
 
/** @} */
/** @} */