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/*
* Video On Demand Samples
*
* Copyright (C) 2015 Microchip Technology Germany II GmbH & Co. KG
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You may also obtain this software under a propriety license from Microchip.
* Please contact Microchip for further information.
*
*/
/*----------------------------------------------------------*/
/*! \file
* \brief This file contains the CMostIpc class.
*/
/*----------------------------------------------------------*/
#ifndef IPC_H
#define IPC_H
#include <stdbool.h>
#include <pthread.h>
#include <semaphore.h>
#include "SafeVector.h"
#include "MsgAddr.h"
#include "MostMsgTx.h"
#include "MsgAddr.h"
#include "MsgFilter.h"
class CMostIpc;
/*! \cond PRIVATE */
typedef struct
{
pthread_t workerThread;
CMostIpc *ipc;
int clientSock;
char clientIP[46];
uint32_t clientPort;
} TcpClientInfo_t;
/*! \endcond */
/*----------------------------------------------------------*/
/*!
* \brief Inter Process Communication
* 1. sends messages using MOST protocol over UDP
* 2. receives messages and forwards them to their
* handlers
*/
/*----------------------------------------------------------*/
class CMostIpc
{
private:
bool isServer;
bool allowThreadRun;
bool udpRxThreadIsRunning;
bool txThreadIsRunning;
bool acceptThreadIsRunning;
CSafeVector<CMostMsgTx *> m_MsgTxQueue;
CSafeVector<CMsgFilter *> m_MsgFilterQueue;
CSafeVector<TcpClientInfo_t *> m_TcpClientConnections;
pthread_mutex_t critical_mutex_rx;
pthread_mutex_t critical_mutex_tcp;
sem_t semTx;
int udpSock;
int tcpSock;
/*----------------------------------------------------------*/
/*! \brief TCP accept thread
* \note Never call this method directly!
*/
/*----------------------------------------------------------*/
static void *TcpAcceptThread( void *pInst );
/*----------------------------------------------------------*/
/*! \brief TCP read / write thread
* \note Never call this method directly!
*/
/*----------------------------------------------------------*/
static void *TcpWorkerThread( void *pInst );
/*----------------------------------------------------------*/
/*! \brief UDP receiving thread
* \note Never call this method directly!
*/
/*----------------------------------------------------------*/
static void *UdpWorkerRXThread( void *pInst );
/*----------------------------------------------------------*/
/*! \brief Sending thread
* \note Never call this method directly!
*/
/*----------------------------------------------------------*/
static void *TXThread( void *pInst );
/*----------------------------------------------------------*/
/*! \brief handle a received message
*/
/*----------------------------------------------------------*/
void OnMsgReceived( CMsgAddr *Addr, CMostMsg *msg );
bool SendUdp( const char *ipAddress, uint32_t port, const uint8_t *buffer, uint32_t bufferLen );
bool SendTcp( const char *ipAddress, uint32_t port, const uint8_t *buffer, uint32_t bufferLen );
public:
/*----------------------------------------------------------*/
/*! \brief constructs Inter Process Communication, which acts as Server
* \param port - If set to server by isServer=true, this value is the server port which the UDP and TCP sockets are listening.
* If set to client by isServer=false, this is the client socket port. If set to 0 or below, a random port will be chosen.
* Otherwise the given port will be used as source port of the connection. The server always can handle random and fixed client port connections.
* \param isServer - true, if this component shall act as "the" server. false, if this component shall act as one of many clients.
*/
/*----------------------------------------------------------*/
CMostIpc( int port, bool isServer );
/*----------------------------------------------------------*/
/*! \brief Deletes every resources used by Inter Process Communication
*/
/*----------------------------------------------------------*/
~CMostIpc();
/*----------------------------------------------------------*/
/*! \brief send a MOST message
*/
/*----------------------------------------------------------*/
void SendMsg( CMostMsgTx *Msg );
/*----------------------------------------------------------*/
/*! \brief adds a message handler
*/
/*----------------------------------------------------------*/
void RegisterMessageHandler( CMsgFilter *Filter );
/*----------------------------------------------------------*/
/*! \brief removes a message handler
*/
/*----------------------------------------------------------*/
void UnregisterMessageHandler( CMsgFilter *Filter );
};
#endif //IPC_H
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