text: ﻿/*
   * MIT License
   *
   * Copyright (c) 2016 xiongziliang <771730766@qq.com>
   *
   * This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  #ifndef SRC_RTSP_RTPBROADCASTER_H_
  #define SRC_RTSP_RTPBROADCASTER_H_
  
  
  #include <mutex>
  #include <memory>
  #include <unordered_set>
  #include <unordered_map>
  #include "Common/config.h"
  #include "RtspMediaSource.h"
  #include "Util/mini.h"
  #include "Network/Socket.h"
  
  using namespace std;
  using namespace ZL::Util;
  using namespace ZL::Network;
  
  namespace ZL {
  namespace Rtsp {
  
  class MultiCastAddressMaker
  {
  public:
  	static MultiCastAddressMaker &Instance(){
  		static MultiCastAddressMaker instance;
  		return instance;
  	}
  	static bool isMultiCastAddress(uint32_t iAddr){
  		static uint32_t addrMin = mINI::Instance()[Config::MultiCast::kAddrMin].as<uint32_t>();
  		static uint32_t addrMax = mINI::Instance()[Config::MultiCast::kAddrMax].as<uint32_t>();
  		return iAddr >= addrMin && iAddr <= addrMax;
  	}
  	static string toString(uint32_t iAddr){
  		iAddr = htonl(iAddr);
  		return ::inet_ntoa((struct in_addr &)(iAddr));
  	}
  	virtual ~MultiCastAddressMaker(){}
  	std::shared_ptr<uint32_t> obtain(uint32_t iTry = 10);
  private:
  	MultiCastAddressMaker(){};
  	void release(uint32_t iAddr);
  	uint32_t m_iAddr = 0;
  	recursive_mutex m_mtx;
  	unordered_set<uint32_t> m_setBadAddr;
  };
  class RtpBroadCaster {
  public:
  	typedef std::shared_ptr<RtpBroadCaster> Ptr;
  	typedef function<void()> onDetach;
  	virtual ~RtpBroadCaster();
  	static Ptr get(const string &strLocalIp,const string &strVhost,const string &strApp,const string &strStream);
  	void setDetachCB(void *listener,const onDetach &cb);
  	uint16_t getPort(int iTrackId);
  	string getIP();
  private:
  	static recursive_mutex g_mtx;
  	static unordered_map<string , weak_ptr<RtpBroadCaster> > g_mapBroadCaster;
  	static Ptr make(const string &strLocalIp,const string &strVhost,const string &strApp,const string &strStream);
  
  	std::shared_ptr<uint32_t> m_multiAddr;
  	recursive_mutex m_mtx;
  	unordered_map<void * , onDetach > m_mapDetach;
  	RtspMediaSource::RingType::RingReader::Ptr m_pReader;
  	Socket::Ptr m_apUdpSock[2];
  	struct sockaddr_in m_aPeerUdpAddr[2];
  
  	RtpBroadCaster(const string &strLocalIp,const string &strVhost,const string &strApp,const string &strStream);
  
  };
  
  } /* namespace Rtsp */
  } /* namespace ZL */
  
  #endif /* SRC_RTSP_RTPBROADCASTER_H_ */
  