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

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.ConnectionStatsReportBuilder = void 0;
/*
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.
*/

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);
  }
}
exports.ConnectionStatsReportBuilder = ConnectionStatsReportBuilder;
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