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node_modules/matrix-js-sdk/lib/webrtc/stats/media/mediaTrackStatsHandler.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 { MediaTrackStats } from "./mediaTrackStats.js";
+export class MediaTrackStatsHandler {
+  constructor(mediaSsrcHandler, mediaTrackHandler) {
+    _defineProperty(this, "track2stats", new Map());
+    this.mediaSsrcHandler = mediaSsrcHandler;
+    this.mediaTrackHandler = mediaTrackHandler;
+  }
+
+  /**
+   * Find tracks by rtc stats
+   * Argument report is any because the stats api is not consistent:
+   * For example `trackIdentifier`, `mid` not existing in every implementations
+   * https://www.w3.org/TR/webrtc-stats/#dom-rtcinboundrtpstreamstats
+   * https://developer.mozilla.org/en-US/docs/Web/API/RTCInboundRtpStreamStats
+   */
+  findTrack2Stats(report, type) {
+    let trackID;
+    if (report.trackIdentifier) {
+      trackID = report.trackIdentifier;
+    } else if (report.mid) {
+      trackID = type === "remote" ? this.mediaTrackHandler.getRemoteTrackIdByMid(report.mid) : this.mediaTrackHandler.getLocalTrackIdByMid(report.mid);
+    } else if (report.ssrc) {
+      const mid = this.mediaSsrcHandler.findMidBySsrc(report.ssrc, type);
+      if (!mid) {
+        return undefined;
+      }
+      trackID = type === "remote" ? this.mediaTrackHandler.getRemoteTrackIdByMid(report.mid) : this.mediaTrackHandler.getLocalTrackIdByMid(report.mid);
+    }
+    if (!trackID) {
+      return undefined;
+    }
+    let trackStats = this.track2stats.get(trackID);
+    if (!trackStats) {
+      const track = this.mediaTrackHandler.getTackById(trackID);
+      if (track !== undefined) {
+        const kind = track.kind === "audio" ? track.kind : "video";
+        trackStats = new MediaTrackStats(trackID, type, kind);
+        this.track2stats.set(trackID, trackStats);
+      } else {
+        return undefined;
+      }
+    }
+    return trackStats;
+  }
+  findLocalVideoTrackStats(report) {
+    const localVideoTracks = this.mediaTrackHandler.getLocalTracks("video");
+    if (localVideoTracks.length === 0) {
+      return undefined;
+    }
+    return this.findTrack2Stats(report, "local");
+  }
+  getTrack2stats() {
+    return this.track2stats;
+  }
+  findTransceiverByTrackId(trackID) {
+    return this.mediaTrackHandler.getTransceiverByTrackId(trackID);
+  }
+}
+//# sourceMappingURL=mediaTrackStatsHandler.js.map