mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-22 19:00:01 +08:00
330 lines
9.4 KiB
C++
330 lines
9.4 KiB
C++
//
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// Created by xzl on 2021/3/27.
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//
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#ifndef ZLMEDIAKIT_SDP_H
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#define ZLMEDIAKIT_SDP_H
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#include <string>
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#include <vector>
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#include "Extension/Frame.h"
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using namespace std;
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using namespace mediakit;
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//https://datatracker.ietf.org/doc/rfc4566/?include_text=1
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//v=0
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//o=- 2584450093346841581 2 IN IP4 127.0.0.1
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//s=-
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//t=0 0
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//a=group:BUNDLE audio video data
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//a=msid-semantic: WMS 616cfbb1-33a3-4d8c-8275-a199d6005549
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//m=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126
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//c=IN IP4 0.0.0.0
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//a=rtcp:9 IN IP4 0.0.0.0
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//a=ice-ufrag:sXJ3
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//a=ice-pwd:yEclOTrLg1gEubBFefOqtmyV
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//a=fingerprint:sha-256 22:14:B5:AF:66:12:C7:C7:8D:EF:4B:DE:40:25:ED:5D:8F:17:54:DD:88:33:C0:13:2E:FD:1A:FA:7E:7A:1B:79
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//a=setup:actpass
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//a=mid:audio
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//a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
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//a=sendrecv
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//a=rtcp-mux
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//a=rtpmap:111 opus/48000/2
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//a=rtcp-fb:111 transport-cc
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//a=fmtp:111 minptime=10;useinbandfec=1
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//a=rtpmap:103 ISAC/16000
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//a=rtpmap:104 ISAC/32000
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//a=rtpmap:9 G722/8000
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//a=rtpmap:0 PCMU/8000
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//a=rtpmap:8 PCMA/8000
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//a=rtpmap:106 CN/32000
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//a=rtpmap:105 CN/16000
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//a=rtpmap:13 CN/8000
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//a=rtpmap:110 telephone-event/48000
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//a=rtpmap:112 telephone-event/32000
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//a=rtpmap:113 telephone-event/16000
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//a=rtpmap:126 telephone-event/8000
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//a=ssrc:120276603 cname:iSkJ2vn5cYYubTve
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//a=ssrc:120276603 msid:616cfbb1-33a3-4d8c-8275-a199d6005549 1da3d329-7399-4fe9-b20f-69606bebd363
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//a=ssrc:120276603 mslabel:616cfbb1-33a3-4d8c-8275-a199d6005549
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//a=ssrc:120276603 label:1da3d329-7399-4fe9-b20f-69606bebd363
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//m=video 9 UDP/TLS/RTP/SAVPF 96 98 100 102 127 97 99 101 125
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//c=IN IP4 0.0.0.0
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//a=rtcp:9 IN IP4 0.0.0.0
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//a=ice-ufrag:sXJ3
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//a=ice-pwd:yEclOTrLg1gEubBFefOqtmyV
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//a=fingerprint:sha-256 22:14:B5:AF:66:12:C7:C7:8D:EF:4B:DE:40:25:ED:5D:8F:17:54:DD:88:33:C0:13:2E:FD:1A:FA:7E:7A:1B:79
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//a=setup:actpass
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//a=mid:video
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//a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
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//a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
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//a=extmap:4 urn:3gpp:video-orientation
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//a=extmap:5 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
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//a=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay
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//a=sendrecv
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//a=rtcp-mux
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//a=rtcp-rsize
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//a=rtpmap:96 VP8/90000
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//a=rtcp-fb:96 ccm fir
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//a=rtcp-fb:96 nack
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//a=rtcp-fb:96 nack pli
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//a=rtcp-fb:96 goog-remb
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//a=rtcp-fb:96 transport-cc
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//a=rtpmap:98 VP9/90000
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//a=rtcp-fb:98 ccm fir
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//a=rtcp-fb:98 nack
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//a=rtcp-fb:98 nack pli
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//a=rtcp-fb:98 goog-remb
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//a=rtcp-fb:98 transport-cc
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//a=rtpmap:100 H264/90000
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//a=rtcp-fb:100 ccm fir
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//a=rtcp-fb:100 nack
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//a=rtcp-fb:100 nack pli
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//a=rtcp-fb:100 goog-remb
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//a=rtcp-fb:100 transport-cc
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//a=fmtp:100 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f
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//a=rtpmap:102 red/90000
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//a=rtpmap:127 ulpfec/90000
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//a=rtpmap:97 rtx/90000
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//a=fmtp:97 apt=96
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//a=rtpmap:99 rtx/90000
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//a=fmtp:99 apt=98
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//a=rtpmap:101 rtx/90000
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//a=fmtp:101 apt=100
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//a=rtpmap:125 rtx/90000
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//a=fmtp:125 apt=102
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//a=ssrc-group:FID 2580761338 611523443
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//a=ssrc:2580761338 cname:iSkJ2vn5cYYubTve
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//a=ssrc:2580761338 msid:616cfbb1-33a3-4d8c-8275-a199d6005549 bf270496-a23e-47b5-b901-ef23096cd961
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//a=ssrc:2580761338 mslabel:616cfbb1-33a3-4d8c-8275-a199d6005549
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//a=ssrc:2580761338 label:bf270496-a23e-47b5-b901-ef23096cd961
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//a=ssrc:611523443 cname:iSkJ2vn5cYYubTve
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//a=ssrc:611523443 msid:616cfbb1-33a3-4d8c-8275-a199d6005549 bf270496-a23e-47b5-b901-ef23096cd961
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//a=ssrc:611523443 mslabel:616cfbb1-33a3-4d8c-8275-a199d6005549
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//a=ssrc:611523443 label:bf270496-a23e-47b5-b901-ef23096cd961
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//m=application 9 DTLS/SCTP 5000
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//c=IN IP4 0.0.0.0
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//a=ice-ufrag:sXJ3
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//a=ice-pwd:yEclOTrLg1gEubBFefOqtmyV
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//a=fingerprint:sha-256 22:14:B5:AF:66:12:C7:C7:8D:EF:4B:DE:40:25:ED:5D:8F:17:54:DD:88:33:C0:13:2E:FD:1A:FA:7E:7A:1B:79
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//a=setup:actpass
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//a=mid:data
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//a=sctpmap:5000 webrtc-datachannel 1024
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//Session description
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// v= (protocol version)
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// o= (originator and session identifier)
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// s= (session name)
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// i=* (session information)
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// u=* (URI of description)
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// e=* (email address)
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// p=* (phone number)
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// c=* (connection information -- not required if included in
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// all media)
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// b=* (zero or more bandwidth information lines)
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// One or more time descriptions ("t=" and "r=" lines; see below)
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// z=* (time zone adjustments)
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// k=* (encryption key)
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// a=* (zero or more session attribute lines)
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// Zero or more media descriptions
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//
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// Time description
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// t= (time the session is active)
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// r=* (zero or more repeat times)
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//
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// Media description, if present
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// m= (media name and transport address)
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// i=* (media title)
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// c=* (connection information -- optional if included at
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// session level)
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// b=* (zero or more bandwidth information lines)
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// k=* (encryption key)
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// a=* (zero or more media attribute lines)
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enum class RtpDirection {
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invalid = -1,
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//只发送
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sendonly,
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//只接收
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revonly,
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//同时发送接收
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sendrecv,
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//禁止发送数据
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inactive
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};
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enum class DtlsRole {
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invalid = -1,
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//客户端
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active,
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//服务端
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passive,
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//既可作做客户端也可以做服务端
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actpass,
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};
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enum class SdpType {
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invalid = -1,
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offer,
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answer
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};
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class SdpItem {
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public:
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SdpItem() = default;
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virtual ~SdpItem() = default;
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virtual void parse(const string &str) = 0;
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virtual string toString() const = 0;
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virtual const char* getKey() = 0;
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};
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class SdpTime : public SdpItem{
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public:
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//5.9. Timing ("t=")
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// t=<start-time> <stop-time>
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uint64_t start;
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uint64_t stop;
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void parse(const string &str) override;
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string toString() const override;
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const char* getKey() override { return "t";}
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};
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class SdpOrigin : public SdpItem{
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public:
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// 5.2. Origin ("o=")
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// o=jdoe 2890844526 2890842807 IN IP4 10.47.16.5
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// o=<username> <sess-id> <sess-version> <nettype> <addrtype> <unicast-address>
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string username;
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string session_id;
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string session_version;
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string nettype;
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string addrtype;
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string address;
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void parse(const string &str) override;
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string toString() const override;
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const char* getKey() override { return "o";}
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};
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class SdpConnection : public SdpItem {
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public:
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// 5.7. Connection Data ("c=")
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// c=IN IP4 224.2.17.12/127
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// c=<nettype> <addrtype> <connection-address>
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string nettype;
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string addrtype;
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string address;
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void parse(const string &str) override;
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string toString() const override;
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const char* getKey() override { return "c";}
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};
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class SdpBandwidth : public SdpItem {
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public:
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//5.8. Bandwidth ("b=")
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//b=<bwtype>:<bandwidth>
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//AS、CT
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string bwtype;
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int bandwidth;
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void parse(const string &str) override;
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string toString() const override;
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const char* getKey() override { return "b";}
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};
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class SdpMedia : public SdpItem {
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public:
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// 5.14. Media Descriptions ("m=")
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// m=<media> <port> <proto> <fmt> ...
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TrackType type;
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uint16_t port;
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vector<string> proto;
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vector<uint8_t> fmt;
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void parse(const string &str) override;
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string toString() const override;
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const char* getKey() override { return "m";}
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};
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class SdpAttr : public SdpItem{
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public:
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//5.13. Attributes ("a=")
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//a=<attribute>
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//a=<attribute>:<value>
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string name;
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string value;
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void parse(const string &str) override;
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string toString() const override;
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const char* getKey() override { return "a";}
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};
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class SdpAttrGroup : public SdpItem{
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public:
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//a=group:BUNDLE line with all the 'mid' identifiers part of the
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// BUNDLE group is included at the session-level.
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//a=group:LS session level attribute MUST be included wth the 'mid'
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// identifiers that are part of the same lip sync group.
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string type;
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vector<string> mid;
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void parse(const string &str) override;
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string toString() const override;
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const char* getKey() override { return "group";}
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};
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class RtcMedia {
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public:
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//m=<media> <port> <proto> <fmt> ...
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SdpMedia media;
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//c=<nettype> <addrtype> <connection-address>
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SdpConnection connection;
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//a=<attribute>:<value>
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vector<SdpAttr> attributes;
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bool haveAttr(const char *attr) const;
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string getAttrValue(const char *attr) const;
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};
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class RtcSdp {
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public:
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/////Session description（会话级别描述）////
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//v= (protocol version)
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int version;
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//o= (session origin information )
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SdpOrigin origin;
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//s= (session name)
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string session_name;
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//t= (time the session is active)
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SdpTime time;
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//// 非必须 ////
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//i=* (session information)
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string information;
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//u=* (URI of description)
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string url;
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//e=* (email address)
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string email;
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//p=* (phone number)
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string phone;
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//c=* (connection information -- not required if included in all media)
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SdpConnection connection;
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//b=* (zero or more bandwidth information lines)
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SdpBandwidth bandwidth;
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//z=* (time zone adjustments)
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//z=<adjustment time> <offset> <adjustment time> <offset> ....
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string time_zone;
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//k=* (encryption key)
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//k=<method>, k=<method>:<encryption key>
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string crypt_key;
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//r=* (zero or more repeat times)
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//r=<repeat interval> <active duration> <offsets from start-time>
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string repeat;
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//a=* (zero or more media attribute lines)
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vector<SdpAttr> attributes;
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};
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#endif //ZLMEDIAKIT_SDP_H
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