/*
 *   Copyright (C) 2009-2014,2016,2018,2020 by Jonathan Naylor G4KLX
 *
 *   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, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef	NXDNKenwoodNetwork_H
#define	NXDNKenwoodNetwork_H

#include "NXDNNetwork.h"
#include "UDPSocket.h"
#include "Timer.h"

#include <cstdint>
#include <string>
#include <random>

class CNXDNKenwoodNetwork : public INXDNNetwork {
public:
	CNXDNKenwoodNetwork(const std::string& localAddress, unsigned short localPort, const std::string& gwyAddress, unsigned short gwyPort, bool debug);
	virtual ~CNXDNKenwoodNetwork();

	virtual bool open();

	virtual void enable(bool enabled);

	virtual bool write(const unsigned char* data, NXDN_NETWORK_MESSAGE_TYPE type);

	virtual bool read(unsigned char* data);

	virtual void reset();

	virtual bool isConnected() const;

	virtual void close();

	virtual void clock(unsigned int ms);

private:
	CUDPSocket       m_rtpSocket;
	CUDPSocket       m_rtcpSocket;
	sockaddr_storage m_rtcpAddr;
	sockaddr_storage m_rtpAddr;
	unsigned int     m_rtcpAddrLen;
	unsigned int     m_rtpAddrLen;
	bool             m_enabled;
	bool             m_headerSeen;
	bool             m_seen1;
	bool             m_seen2;
	bool             m_seen3;
	bool             m_seen4;
	unsigned char*   m_sacch;
	uint8_t          m_sessionId;
	uint16_t         m_seqNo;
	unsigned int     m_ssrc;
	bool             m_debug;
	uint32_t         m_startSecs;
	uint32_t         m_startUSecs;
	CTimer           m_rtcpTimer;
	CTimer           m_hangTimer;
	unsigned char    m_hangType;
	unsigned short   m_hangSrc;
	unsigned short   m_hangDst;
	std::mt19937     m_random;

	bool processIcomVoiceHeader(const unsigned char* data);
	bool processIcomVoiceData(const unsigned char* data);
	bool processIcomDataHeader(const unsigned char* data);
	bool processIcomDataData(const unsigned char* data);
	bool processIcomDataTrailer(const unsigned char* data);
	bool processKenwoodVoiceHeader(unsigned char* data);
	bool processKenwoodVoiceData(unsigned char* data);
	bool processKenwoodVoiceLateEntry(unsigned char* data);
	bool processKenwoodData(unsigned char* data);
	bool writeRTPVoiceHeader(const unsigned char* data);
	bool writeRTPVoiceData(const unsigned char* data);
	bool writeRTPVoiceTrailer(const unsigned char* data);
	bool writeRTPDataHeader(const unsigned char* data);
	bool writeRTPDataData(const unsigned char* data);
	bool writeRTPDataTrailer(const unsigned char* data);
	bool writeRTCPStart();
	bool writeRTCPPing();
	bool writeRTCPHang(unsigned char type, unsigned short src, unsigned short dst);
	bool writeRTCPHang();
	unsigned int readRTP(unsigned char* data);
	unsigned int readRTCP(unsigned char* data);
	unsigned long getTimeStamp() const;
};

#endif