sdpclient.h

/* ---------------------------------------------------------------------------
** This software is in the public domain, furnished "as is", without technical
** support, and with no warranty, express or implied, as to its usefulness for
** any purpose.
**
** sdpclient.h
** 
** Interface to an SDP client
** 
** -------------------------------------------------------------------------*/

#pragma once

#include "environment.h"
#include "SessionSink.h"
#include "liveMedia.hh"
#include <string>
#include <map>
#include <sstream>


/* ---------------------------------------------------------------------------
**  SDP client connection interface
** -------------------------------------------------------------------------*/
class SDPClient 
{
	public:
		static std::string getSdpFromRtpUrl(const std::string & url) {
			std::string sdp;
			if (url.find("rtp://") == 0) {
				std::istringstream is(url.substr(strlen("rtp://")));
				std::string ip;
				std::getline(is, ip, ':');
				std::string port;
				std::getline(is, port, '/');
				std::string rtppayloadtype("96");
				std::getline(is, rtppayloadtype, '/');
				std::string codec("H264");
				std::getline(is, codec);
				
				std::ostringstream os;
				os << "m=video " << port << " RTP/AVP " << rtppayloadtype << "\r\n"
				   << "c=IN IP4 " << ip <<"\r\n"
				   << "a=rtpmap:" << rtppayloadtype << " " << codec << "\r\n";
				sdp.assign(os.str());
			}	
			return sdp;	
		}

		/* ---------------------------------------------------------------------------
		**  SDP client callback interface
		** -------------------------------------------------------------------------*/
		class Callback : public SessionCallback
		{
			public:
				virtual void    onError(SDPClient&, const char*)  {}
		};
			
	public:
		SDPClient(Environment& env, Callback* callback, const char* SDP, const std::map<std::string,std::string> & opts, int verbosityLevel=1);
		virtual ~SDPClient();

		void start() {};
		void stop() {};
	
	protected:
		Environment&             m_env;
		Callback*                m_callback; 	
		MediaSession*            m_session;                   	
};