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node_modules/matrix-js-sdk/lib/webrtc/stats/media/mediaSsrcHandler.js

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+import _defineProperty from "@babel/runtime/helpers/defineProperty";
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { parse as parseSdp } from "sdp-transform";
+export class MediaSsrcHandler {
+  constructor() {
+    _defineProperty(this, "ssrcToMid", {
+      local: new Map(),
+      remote: new Map()
+    });
+  }
+  findMidBySsrc(ssrc, type) {
+    let mid;
+    this.ssrcToMid[type].forEach((ssrcs, m) => {
+      if (ssrcs.find(s => s == ssrc)) {
+        mid = m;
+        return;
+      }
+    });
+    return mid;
+  }
+  parse(description, type) {
+    const sdp = parseSdp(description);
+    const ssrcToMid = new Map();
+    sdp.media.forEach(m => {
+      if (!!m.mid && m.type === "video" || m.type === "audio") {
+        const ssrcs = [];
+        m.ssrcs?.forEach(ssrc => {
+          if (ssrc.attribute === "cname") {
+            ssrcs.push(`${ssrc.id}`);
+          }
+        });
+        ssrcToMid.set(`${m.mid}`, ssrcs);
+      }
+    });
+    this.ssrcToMid[type] = ssrcToMid;
+  }
+  getSsrcToMidMap(type) {
+    return this.ssrcToMid[type];
+  }
+}
+//# sourceMappingURL=mediaSsrcHandler.js.map