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node_modules/matrix-js-sdk/lib/webrtc/stats/connectionStatsReportBuilder.js

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+/*
+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.
+*/
+
+export class ConnectionStatsReportBuilder {
+  static build(stats) {
+    const report = {};
+
+    // process stats
+    const totalPackets = {
+      download: 0,
+      upload: 0
+    };
+    const lostPackets = {
+      download: 0,
+      upload: 0
+    };
+    let bitrateDownload = 0;
+    let bitrateUpload = 0;
+    const resolutions = {
+      local: new Map(),
+      remote: new Map()
+    };
+    const framerates = {
+      local: new Map(),
+      remote: new Map()
+    };
+    const codecs = {
+      local: new Map(),
+      remote: new Map()
+    };
+    const jitter = new Map();
+    const audioConcealment = new Map();
+    let audioBitrateDownload = 0;
+    let audioBitrateUpload = 0;
+    let videoBitrateDownload = 0;
+    let videoBitrateUpload = 0;
+    let totalConcealedAudio = 0;
+    let totalAudioDuration = 0;
+    for (const [trackId, trackStats] of stats) {
+      // process packet loss stats
+      const loss = trackStats.getLoss();
+      const type = loss.isDownloadStream ? "download" : "upload";
+      totalPackets[type] += loss.packetsTotal;
+      lostPackets[type] += loss.packetsLost;
+
+      // process bitrate stats
+      bitrateDownload += trackStats.getBitrate().download;
+      bitrateUpload += trackStats.getBitrate().upload;
+
+      // collect resolutions and framerates
+      if (trackStats.kind === "audio") {
+        // process audio quality stats
+        const audioConcealmentForTrack = trackStats.getAudioConcealment();
+        totalConcealedAudio += audioConcealmentForTrack.concealedAudio;
+        totalAudioDuration += audioConcealmentForTrack.totalAudioDuration;
+        audioBitrateDownload += trackStats.getBitrate().download;
+        audioBitrateUpload += trackStats.getBitrate().upload;
+      } else {
+        videoBitrateDownload += trackStats.getBitrate().download;
+        videoBitrateUpload += trackStats.getBitrate().upload;
+      }
+      resolutions[trackStats.getType()].set(trackId, trackStats.getResolution());
+      framerates[trackStats.getType()].set(trackId, trackStats.getFramerate());
+      codecs[trackStats.getType()].set(trackId, trackStats.getCodec());
+      if (trackStats.getType() === "remote") {
+        jitter.set(trackId, trackStats.getJitter());
+        if (trackStats.kind === "audio") {
+          audioConcealment.set(trackId, trackStats.getAudioConcealment());
+        }
+      }
+      trackStats.resetBitrate();
+    }
+    report.bitrate = {
+      upload: bitrateUpload,
+      download: bitrateDownload
+    };
+    report.bitrate.audio = {
+      upload: audioBitrateUpload,
+      download: audioBitrateDownload
+    };
+    report.bitrate.video = {
+      upload: videoBitrateUpload,
+      download: videoBitrateDownload
+    };
+    report.packetLoss = {
+      total: ConnectionStatsReportBuilder.calculatePacketLoss(lostPackets.download + lostPackets.upload, totalPackets.download + totalPackets.upload),
+      download: ConnectionStatsReportBuilder.calculatePacketLoss(lostPackets.download, totalPackets.download),
+      upload: ConnectionStatsReportBuilder.calculatePacketLoss(lostPackets.upload, totalPackets.upload)
+    };
+    report.audioConcealment = audioConcealment;
+    report.totalAudioConcealment = {
+      concealedAudio: totalConcealedAudio,
+      totalAudioDuration
+    };
+    report.framerate = framerates;
+    report.resolution = resolutions;
+    report.codec = codecs;
+    report.jitter = jitter;
+    return report;
+  }
+  static calculatePacketLoss(lostPackets, totalPackets) {
+    if (!totalPackets || totalPackets <= 0 || !lostPackets || lostPackets <= 0) {
+      return 0;
+    }
+    return Math.round(lostPackets / totalPackets * 100);
+  }
+}
+//# sourceMappingURL=connectionStatsReportBuilder.js.map