feat: explicitly model ssrc and ssrc groups in avmediadescription (#5)

webex · Oct 20, 2022 · 061b693 · 061b693
1 parent 89cce93
commit 061b693
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Showing 2 changed files with 19 additions and 2 deletions.
diff --git a/src/model/av-media-description.ts b/src/model/av-media-description.ts
@@ -14,6 +14,8 @@ import {
   Setup,
   SetupLine,
   SimulcastLine,
+  SsrcGroupLine,
+  SsrcLine,
 } from '../lines';
 import { CodecInfo } from './codec-info';
 import { MediaDescription } from './media-description';
@@ -36,6 +38,10 @@ export class AvMediaDescription extends MediaDescription {
 
   rtcpMux = false;
 
+  ssrcs: Array<SsrcLine> = [];
+
+  ssrcGroups: Array<SsrcGroupLine> = [];
+
   /**
    * Create a MediaInfo instance from a MediaLine.
    *
@@ -94,6 +100,9 @@ export class AvMediaDescription extends MediaDescription {
     }
     this.codecs.forEach((codec) => lines.push(...codec.toLines()));
 
+    lines.push(...this.ssrcs);
+    lines.push(...this.ssrcGroups);
+
     lines.push(...this.otherLines);
 
     return lines;
@@ -138,6 +147,14 @@ export class AvMediaDescription extends MediaDescription {
       codec.addLine(line);
       return true;
     }
+    if (line instanceof SsrcLine) {
+      this.ssrcs.push(line);
+      return true;
+    }
+    if (line instanceof SsrcGroupLine) {
+      this.ssrcGroups.push(line);
+      return true;
+    }
     this.otherLines.push(line);
     return true;
   }

diff --git a/src/sdp-corpus/ordering.ts b/src/sdp-corpus/ordering.ts
@@ -69,10 +69,10 @@ a=rtpmap:110 telephone-event/48000\r
 a=rtpmap:112 telephone-event/32000\r
 a=rtpmap:113 telephone-event/16000\r
 a=rtpmap:126 telephone-event/8000\r
-a=rtcp:9 IN IP4 0.0.0.0\r
-a=msid:- a8a17466-0c31-4198-bbd1-20fb6ca2fac6\r
 a=ssrc:4013544331 cname:OfAxmTLksFb12Jj3\r
 a=ssrc:4013544331 msid:- a8a17466-0c31-4198-bbd1-20fb6ca2fac6\r
 a=ssrc:4013544331 mslabel:-\r
 a=ssrc:4013544331 label:a8a17466-0c31-4198-bbd1-20fb6ca2fac6\r
+a=rtcp:9 IN IP4 0.0.0.0\r
+a=msid:- a8a17466-0c31-4198-bbd1-20fb6ca2fac6\r
 `;