做外贸生意最好的网站,wordpress添加字段,电子商务系统分析报告,猎头公司是什么意思一、说明 RTP 现在的问题是要解决的流媒体的实时传输的问题的最佳方法。和JRTPLIB 是一个用C语言实现的RTP库。包含UDP通讯。刚使用JRTPLIB#xff0c;对JRTPLIB的理解还不够深#xff0c;当做使用时#xff0c;积累的一些经验写个笔记吧。 二、RTP协议 实时传送协议#x… 一、说明 RTP 现在的问题是要解决的流媒体的实时传输的问题的最佳方法。和JRTPLIB 是一个用C语言实现的RTP库。包含UDP通讯。刚使用JRTPLIB对JRTPLIB的理解还不够深当做使用时积累的一些经验写个笔记吧。 二、RTP协议 实时传送协议Real-time Transport Protocol或简写RTP也能够写成RTTP是一个网络传输协议RTP协议具体说明了在互联网上传递音频和视频的标准数据包格式。它一開始被设计为一个多播协议。但后来被用在非常多单播应用中。RTP协议经常使用于流媒体系统配合RTCP协议或者RTSP协议。由于RTP自身具有Time stamp所以在ffmpeg 中被用做一种formate。 RTP协议的具体介绍请參考这篇文章http://www.360doc.com/content/11/1009/15/496343_154624612.shtml 三、RTPSession类 这里不介绍jrtplib的编译安装。这个非常easy网上非常多地方都有解说。 jrtplib的使用中主要是环绕这个类来实现的因此大家有必要去查看源代码看这类的实现。为了方便使用我在这做了RTPSession的继承封装。以下直接贴代码了。 RTPSessionUtils.h #include rtpsession.h
#include rtppacket.h
#include rtpudpv4transmitter.h
#include rtpipv4address.h
#include rtpsessionparams.h
#include rtperrors.h
#ifndef WIN32
#include netinet/in.h
#include arpa/inet.h
#else
#include winsock2.h
#endif // WIN32
#include rtpsourcedata.h
#include stdlib.h
#include stdio.h
#include iostream
#include string//jrtplib应用需链接的lib
#pragma comment(lib,ws2_32.lib)
#pragma comment(lib, jrtplib_d.lib)
#pragma comment(lib,jthread_d.lib)namespace jrtplib
{class RTPSessionUtils : public RTPSession{typedef RTPSession base_type;public:RTPSessionUtils();~RTPSessionUtils();int AddDestination(const std::string ip, uint16_t port);int DeleteDestination(const std::string ip, uint16_t port);int CreateDefault(uint16_t port);protected:void OnNewSource(RTPSourceData *dat);void OnBYEPacket(RTPSourceData *dat);void OnRemoveSource(RTPSourceData *dat);void OnRTPPacket(RTPPacket *pack,const RTPTime receivetime,const RTPAddress *senderaddress);void OnRTCPCompoundPacket(RTCPCompoundPacket *pack,const RTPTime receivetime,const RTPAddress *senderaddress);void OnPollThreadStep();private:int GetAddrFromSource(RTPSourceData *dat, uint32_t ip, uint16_t port);};
}//整形的ip转成字符串ip
static std::string IPToString(const unsigned int iIP)
{struct in_addr inaddr;inaddr.s_addr htonl(iIP);return std::string(inet_ntoa(inaddr));
}//字符串ip转成整形ip
static unsigned int IPToInt(const std::string sIP)
{return inet_addr(sIP.c_str());
} RTPSessionUtils.cpp #include RTPSessionUtils.hnamespace jrtplib{RTPSessionUtils::RTPSessionUtils(){
#ifdef WIN32WSADATA dat;WSAStartup(MAKEWORD(2,2),dat);
#endif // WIN32}RTPSessionUtils::~RTPSessionUtils(){
#ifdef WIN32WSACleanup();
#endif // WIN32}int RTPSessionUtils::CreateDefault(uint16_t port){RTPUDPv4TransmissionParams transparams;RTPSessionParams sessparams;sessparams.SetOwnTimestampUnit(1.0/10.0);//必须设置transparams.SetPortbase(port);//port必须是偶数return base_type::Create(sessparams, transparams);base_type::SetDefaultPayloadType(0);base_type::SetDefaultTimestampIncrement(0);base_type::SetDefaultMark(false);}int RTPSessionUtils::AddDestination(const std::string ip, uint16_t port){return base_type::AddDestination(RTPIPv4Address(ntohl(inet_addr(ip.c_str())), port));}int RTPSessionUtils::DeleteDestination(const std::string ip, uint16_t port){return base_type::DeleteDestination(RTPIPv4Address(ntohl(inet_addr(ip.c_str())), port));}int RTPSessionUtils::GetAddrFromSource(RTPSourceData *dat, uint32_t ip, uint16_t port){if (dat-IsOwnSSRC())return -1;if (dat-GetRTPDataAddress() ! 0){const RTPIPv4Address *addr (const RTPIPv4Address *)(dat-GetRTPDataAddress());ip addr-GetIP();port addr-GetPort();}else if (dat-GetRTCPDataAddress() ! 0){const RTPIPv4Address *addr (const RTPIPv4Address *)(dat-GetRTCPDataAddress());ip addr-GetIP();port addr-GetPort()-1;}return 0;}void RTPSessionUtils::OnNewSource(RTPSourceData *dat){uint32_t ip;uint16_t port;if (GetAddrFromSource(dat, ip, port))return;RTPIPv4Address dest(ip,port);base_type::AddDestination(dest);std::cout OnNewSource Adding destination IPToString(ip) : port std::endl;}void RTPSessionUtils::OnRemoveSource(RTPSourceData *dat){if (dat-ReceivedBYE())return;uint32_t ip;uint16_t port;if (GetAddrFromSource(dat, ip, port))return;RTPIPv4Address dest(ip,port);base_type::DeleteDestination(dest);std::cout OnRemoveSource Deleting destination IPToString(ip) : port std::endl;}void RTPSessionUtils::OnBYEPacket(RTPSourceData *dat){uint32_t ip;uint16_t port;if (GetAddrFromSource(dat, ip, port))return;RTPIPv4Address dest(ip,port);base_type::DeleteDestination(dest);std::cout OnBYEPacket Deleting destination IPToString(ip) : port std::endl;}//仅仅要有rtp包就会触发void RTPSessionUtils::OnRTPPacket(RTPPacket *pack,const RTPTime receivetime,const RTPAddress *senderaddress){std::cout OnRTPPacket: data: pack-GetPayloadData() std::endl;}//收到rtcp包触发void RTPSessionUtils::OnRTCPCompoundPacket(RTCPCompoundPacket *pack,const RTPTime receivetime,const RTPAddress *senderaddress){std::cout OnRTCPCompoundPacket: data: pack-GetCompoundPacketData() std::endl;}//隔段时间就会触发,也能够用于收包回调函数//void RTPSessionUtils::OnPollThreadStep()//{// BeginDataAccess();// // check incoming packets// if (GotoFirstSourceWithData())// {// do// {// RTPPacket *pack;// RTPSourceData *srcdat;// srcdat GetCurrentSourceInfo();// while ((pack GetNextPacket()) ! NULL)// {// std::cout Got packet pack-GetExtendedSequenceNumber() from SSRC srcdat-GetSSRC() std::endl;// DeletePacket(pack);// }// } while (GotoNextSourceWithData());// }// EndDataAccess();//}
} server.cpp #include iostream
#include RTPSessionUtils.h
using namespace jrtplib;
void main()
{int status;RTPSessionUtils sess;status sess.CreateDefault(8888);if(status){std::cout RTP error: RTPGetErrorString(status) std::endl;return;}while (1){std::string buf;std::cout Input send data: ;std::cin buf;sess.SendPacket((void*)buf.c_str(), buf.length(), 0, false, 0);if(status){std::cout RTP error: RTPGetErrorString(status) std::endl;continue;}}system(pause);
}client.cpp #include iostream
#include RTPSessionUtils.h
using namespace jrtplib;void main()
{int status;RTPSessionUtils sess;status sess.CreateDefault(6666);if(status){std::cout RTP error: RTPGetErrorString(status) std::endl;return;}status sess.AddDestination(127.0.0.1, 8888);if(status){std::cout RTP error: RTPGetErrorString(status) std::endl;return;}while (1){std::string buf;std::cout Input send data: ;std::cin buf;sess.SendPacket((void*)buf.c_str(), buf.length(), 0, false, 0);if(status){std::cout RTP error: RTPGetErrorString(status) std::endl;continue;}}system(pause);
} 转载于:https://www.cnblogs.com/hrhguanli/p/4565530.html
