Dash-Industry-Forum · dsilhavy · Feb 6, 2023 · Dec 2, 2022 · Dec 2, 2022 · Dec 2, 2022
diff --git a/index.d.ts b/index.d.ts
@@ -334,6 +334,13 @@ declare namespace dashjs {
                 rtpSafetyFactor?: number,
                 mode?: 'query' | 'header',
                 enabledKeys?: Array<string>
+            },
+            cmsd?: {
+                enabled?: boolean,
+                abr?: {
+                    applyMb: boolean,
+                    etpWeightRatio?: number
+                }
             }
         };
         errors?: {

diff --git a/samples/dash-if-reference-player/app/main.js b/samples/dash-if-reference-player/app/main.js
@@ -143,6 +143,8 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
             download: { data: [], selected: false, color: '#44c248', label: 'Audio Download Time (sec)' },
             latency: { data: [], selected: false, color: '#326e88', label: 'Audio Latency (ms)' },
             droppedFPS: { data: [], selected: false, color: '#004E64', label: 'Audio Dropped FPS' },
+            mtp: { data: [], selected: false, color: '#FFC400', label: 'Measured throughput (kpbs)' },
+            etp: { data: [], selected: false, color: '#1712B3', label: 'Estimated throughput (kpbs)' },
             liveLatency: { data: [], selected: false, color: '#65080c', label: 'Live Latency' },
             playbackRate: { data: [], selected: false, color: '#65080c', label: 'Playback Rate' }
         },
@@ -155,6 +157,8 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
             download: { data: [], selected: false, color: '#FF6700', label: 'Video Download Time (sec)' },
             latency: { data: [], selected: false, color: '#329d61', label: 'Video Latency (ms)' },
             droppedFPS: { data: [], selected: false, color: '#65080c', label: 'Video Dropped FPS' },
+            mtp: { data: [], selected: false, color: '#FFC400', label: 'Measured throughput (kpbs)' },
+            etp: { data: [], selected: false, color: '#1712B3', label: 'Estimated throughput (kpbs)' },
             liveLatency: { data: [], selected: false, color: '#65080c', label: 'Live Latency' },
             playbackRate: { data: [], selected: false, color: '#65080c', label: 'Playback Rate' }
         }
@@ -261,6 +265,8 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
     $scope.videoDownload = '';
     $scope.videoRatioCount = 0;
     $scope.videoRatio = '';
+    $scope.videoMtp = 0;
+    $scope.videoEtp = 0;
     $scope.videoLiveLatency = 0;
     $scope.videoPlaybackRate = 1.00;
 
@@ -277,12 +283,17 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
     $scope.audioDownload = '';
     $scope.audioRatioCount = 0;
     $scope.audioRatio = '';
+    $scope.audioMtp = 0;
+    $scope.audioEtp = 0;
     $scope.audioLiveLatency = 0;
     $scope.audioPlaybackRate = 1.00;
 
     // Starting Options
     $scope.autoPlaySelected = true;
     $scope.cmcdEnabled = false;
+    $scope.cmsdEnabled = false;
+    $scope.cmsdApplyMb = false;
+    $scope.cmsdEtpWeightRatio = 0;
     $scope.loopSelected = true;
     $scope.scheduleWhilePausedSelected = true;
     $scope.calcSegmentAvailabilityRangeFromTimelineSelected = false;
@@ -875,9 +886,43 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
 
     $scope.toggleCmcdEnabled = function () {
         $scope.player.updateSettings({
-            'streaming': {
-                'cmcd': {
-                    'enabled': $scope.cmcdEnabled
+            streaming: {
+                cmcd: {
+                    enabled: $scope.cmcdEnabled
+                }
+            }
+        });
+    };
+
+    $scope.toggleCmsdEnabled = function () {
+        $scope.player.updateSettings({
+            streaming: {
+                cmsd: {
+                    enabled: $scope.cmsdEnabled
+                }
+            }
+        });
+    };
+
+    $scope.toggleCmsdApplyMb = function () {
+        $scope.player.updateSettings({
+            streaming: {
+                cmsd: {
+                    abr: {
+                        applyMb: $scope.cmsdApplyMb
+                    }
+                }
+            }
+        });
+    };
+
+    $scope.updateCmsdEtpWeightRatio = function () {
+        $scope.player.updateSettings({
+            streaming: {
+                cmsd: {
+                    abr: {
+                        etpWeightRatio: parseFloat($scope.cmsdEtpWeightRatio)
+                    }
                 }
             }
         });
@@ -1078,6 +1123,10 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
         }
     };
 
+    $scope.isCMSDEnabled = function () {
+        return $scope.player.getSettings().streaming.cmsd.enabled;
+    };
+
     $scope.hasLogo = function (item) {
         return (item.hasOwnProperty('logo') && item.logo);
     };
@@ -1812,7 +1861,9 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
     function calculateHTTPMetrics(type, requests) {
         var latency = {},
             download = {},
-            ratio = {};
+            ratio = {},
+            mtp = {},
+            etp = {};
 
         var requestWindow = requests.slice(-20).filter(function (req) {
             return req.responsecode >= 200 && req.responsecode < 300 && req.type === 'MediaSegment' && req._stream === type && !!req._mediaduration;
@@ -1870,10 +1921,14 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
                 count: durationTimes.length
             };
 
+            const request = requestWindow[requestWindow.length - 1];
+            etp[type] = request.cmsd && request.cmsd.dynamic && request.cmsd.dynamic.etp ? request.cmsd.dynamic.etp : 0;
+
             return {
                 latency: latency,
                 download: download,
-                ratio: ratio
+                ratio: ratio,
+                etp: etp
             };
 
         }
@@ -1961,6 +2016,7 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
             var droppedFPS = droppedFramesMetrics ? droppedFramesMetrics.droppedFrames : 0;
             var liveLatency = 0;
             var playbackRate = 1.00
+            var mtp = $scope.player.getAverageThroughput(type);
             if ($scope.isDynamic) {
                 liveLatency = $scope.player.getCurrentLiveLatency();
                 playbackRate = parseFloat($scope.player.getPlaybackRate().toFixed(2));
@@ -1977,6 +2033,8 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
                 $scope[type + 'Download'] = httpMetrics.download[type].low.toFixed(2) + ' | ' + httpMetrics.download[type].average.toFixed(2) + ' | ' + httpMetrics.download[type].high.toFixed(2);
                 $scope[type + 'Latency'] = httpMetrics.latency[type].low.toFixed(2) + ' | ' + httpMetrics.latency[type].average.toFixed(2) + ' | ' + httpMetrics.latency[type].high.toFixed(2);
                 $scope[type + 'Ratio'] = httpMetrics.ratio[type].low.toFixed(2) + ' | ' + httpMetrics.ratio[type].average.toFixed(2) + ' | ' + httpMetrics.ratio[type].high.toFixed(2);
+                $scope[type + 'Etp'] = (httpMetrics.etp[type] / 1000).toFixed(3);
+                $scope[type + 'Mtp'] = (mtp / 1000).toFixed(3);
             }
 
             if ($scope.chartCount % 2 === 0) {
@@ -1992,6 +2050,8 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
                     $scope.plotPoint('download', type, httpMetrics.download[type].average.toFixed(2), time);
                     $scope.plotPoint('latency', type, httpMetrics.latency[type].average.toFixed(2), time);
                     $scope.plotPoint('ratio', type, httpMetrics.ratio[type].average.toFixed(2), time);
+                    $scope.plotPoint('etp', type, (httpMetrics.etp[type] / 1000).toFixed(3), time);
+                    $scope.plotPoint('mtp', type, (mtp / 1000).toFixed(3), time);
                 }
                 $scope.safeApply();
             }
@@ -2158,6 +2218,13 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
         }
     }
 
+    function setCMSDSettings() {
+        var currentConfig = $scope.player.getSettings();
+        $scope.cmsdEnabled = currentConfig.streaming.cmsd.enabled;
+        $scope.cmsdApplyMb = currentConfig.streaming.cmsd.abr.applyMb;
+        $scope.cmsdEtpWeightRatio = currentConfig.streaming.cmsd.abr.etpWeightRatio;
+    }
+
     function getUrlVars() {
         var vars = {};
         window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function (m, key, value) {
@@ -2221,6 +2288,7 @@ app.controller('DashController', ['$scope', '$window', 'sources', 'contributors'
             setTrackSwitchModeSettings();
             setInitialLogLevel();
             setCMCDSettings();
+            setCMSDSettings();
 
             checkLocationProtocol();
 

diff --git a/samples/dash-if-reference-player/app/sources.json b/samples/dash-if-reference-player/app/sources.json
@@ -78,6 +78,11 @@
             "acronym": "VDMS",
             "name": "Verizon Media",
             "url": "https://www.verizonmedia.com/"
+        },
+        "broadpeak": {
+            "acronym": "Broadpeak",
+            "name": "Broadpeak",
+            "url": "https://www.broadpeak.tv/"
         }
     },
     "items": [
@@ -304,6 +309,16 @@
                     "url": "https://livesim.dashif.org/livesim/chunkdur_1/ato_7/testpic4_8s/Manifest.mpd",
                     "name": "Low Latency (Multi-Rate) (livesim-chunked)",
                     "provider": "dashif"
+                },
+                {
+                    "url": "https://explo.broadpeak.tv:8343/bpk-tv/spring/lowlat/index.mpd",
+                    "name": "Live low latency (SegmentTemplate, CMSD)",
+                    "provider": "broadpeak"
+                },
+                {
+                    "url": "https://explo.broadpeak.tv:8343/bpk-tv/spring/lowlat/index_timeline.mpd",
+                    "name": "Live low latency (SegmentTimeline, CMSD)",
+                    "provider": "broadpeak"
                 }
             ]
         },

diff --git a/samples/dash-if-reference-player/index.html b/samples/dash-if-reference-player/index.html
@@ -835,6 +835,26 @@
                        ng-change="updateCmcdEnabledKeys()">
             </div>
         </div>
+        <div class="options-item">
+            <div class="options-item-title">CMSD</div>
+            <div class="options-item-body">
+                <label class="topcoat-checkbox" data-toggle="tooltip" data-placement="right"
+                       title="Enables parsing of CMSD response header parameters">
+                    <input type="checkbox" ng-model="cmsdEnabled" ng-change="toggleCmsdEnabled()"
+                           ng-checked="cmsdEnabled">
+                    Enable CMSD Parsing
+                </label>
+                <label class="topcoat-checkbox" data-toggle="tooltip" data-placement="right"
+                       title="Apply maximum suggested bitrate from CMSD response headers">
+                    <input type="checkbox" id="cmsdApplyMb" ng-model="cmsdApplyMb"
+                           ng-change="toggleCmsdApplyMb()" ng-checked="cmsdApplyMb">
+                    Apply maximum suggested bitrate
+                </label>
+                <label class="options-label">Etp weight ratio:</label>
+                <input type="text" class="form-control" placeholder="weight ratio" ng-model="cmsdEtpWeightRatio"
+                       ng-change="updateCmsdEtpWeightRatio()">
+            </div>
+        </div>
 
     </div>
 
@@ -995,6 +1015,22 @@ <h5><span class="label label-warning" style="margin-right:3px">Updated</span>Exp
                                        title="The minimum, average and maximum ratio of the segment playback time to total download time over the last 4 segments">Ratio
                                     (min|avg|max) :</label> {{videoRatio}}
                             </div>
+                            <div class="text-success" ng-show="isCMSDEnabled()">
+                                <input id="mtpCB" type="checkbox"
+                                       ng-model="chartState.video.mtp.selected"
+                                       ng-change="enableChartByName('mtp', 'video')">
+                                <label class="text-primary" for="mtpCB" data-toggle="tooltip"
+                                       data-placement="top"
+                                       title="The measured (averaged) throughput computed in the ABR logic">Measured throughput:</label> {{videoMtp}} Mbps
+                            </div>
+                            <div class="text-success" ng-show="isCMSDEnabled()">
+                                <input id="etpCB" type="checkbox"
+                                       ng-model="chartState.video.etp.selected"
+                                       ng-change="enableChartByName('etp', 'video')">
+                                <label class="text-primary" for="etpCB" data-toggle="tooltip"
+                                       data-placement="top"
+                                       title="The estimated throughput return by CMSD response headers">Estimated throughput:</label> {{videoEtp}} Mbps
+                            </div>
                             <div class="text-success" ng-show="isDynamic">
                                 <input id="liveLatencyCB" type="checkbox"
                                        ng-model="chartState.video.liveLatency.selected"
@@ -1084,7 +1120,23 @@ <h5><span class="label label-warning" style="margin-right:3px">Updated</span>Exp
                                        title="The minimum, average and maximum ratio of the segment playback time to total download time over the last 4 segments">Ratio
                                     (min|avg|max) :</label> {{audioRatio}}
                             </div>
-                            <div class="text-success">
+                            <div class="text-success" ng-show="isCMSDEnabled()">
+                                <input id="mtpCB" type="checkbox"
+                                       ng-model="chartState.video.mtp.selected"
+                                       ng-change="enableChartByName('mtp', 'audio')">
+                                <label class="text-primary" for="mtpCB" data-toggle="tooltip"
+                                       data-placement="top"
+                                       title="The measured (averaged) throughput computed in the ABR logic">Measured throughput:</label> {{videoMtp}} Mbps
+                            </div>
+                            <div class="text-success" ng-show="isCMSDEnabled()">
+                                <input id="etpCB" type="checkbox"
+                                       ng-model="chartState.audio.etp.selected"
+                                       ng-change="enableChartByName('etp', 'audio')">
+                                <label class="text-primary" for="etpCB" data-toggle="tooltip"
+                                       data-placement="top"
+                                       title="The estimated throughput return by CMSD response headers">Estimated throughput:</label> {{audioEtp}} Mbps
+                            </div>
+                            <div class="text-success" ng-show="isDynamic">
                                 <input id="liveLatencyCB" type="checkbox"
                                        ng-model="chartState.audio.liveLatency.selected"
                                        ng-change="enableChartByName('liveLatency', 'audio')">

diff --git a/src/core/Settings.js b/src/core/Settings.js
@@ -215,7 +215,14 @@ import Events from './events/Events';
  *                rtpSafetyFactor: 5,
  *                mode: Constants.CMCD_MODE_QUERY,
  *                enabledKeys: ['br', 'd', 'ot', 'tb' , 'bl', 'dl', 'mtp', 'nor', 'nrr', 'su' , 'bs', 'rtp' , 'cid', 'pr', 'sf', 'sid', 'st', 'v']
- *            }
+ *            },
+ *            cmsd: {
+ *                enabled: false,
+ *                abr: {
+ *                    applyMb: false,
+ *                    etpWeightRatio: 0
+ *                }
+ *           }
  *          },
  *          errors: {
  *            recoverAttempts: {
@@ -658,6 +665,22 @@ import Events from './events/Events';
  * This value is used to specify the desired CMCD parameters. Parameters not included in this list are not reported.
  */
 
+/**
+ * @typedef {Object} module:Settings~CmsdSettings
+ * @property {boolean} [enabled=false]
+ * Enable or disable the CMSD response headers parsing.
+ * @property {module:Settings~CmsdAbrSettings} [abr]
+ * Sets additional ABR rules based on CMSD response headers.
+ */
+
+/**
+ * @typedef {Object} CmsdAbrSettings
+ * @property {boolean} [applyMb=false]
+ * Set to true if dash.js should apply CMSD maximum suggested bitrate in ABR logic.
+ * @property {number} [etpWeightRatio=0]
+ * Sets the weight ratio (between 0 and 1) that shall be applied on CMSD estimated throuhgput compared to measured throughput when calculating throughput.
+ */
+
 /**
  * @typedef {Object} Metrics
  * @property {number} [metricsMaxListDepth=100]
@@ -758,6 +781,8 @@ import Events from './events/Events';
  * Adaptive Bitrate algorithm related settings.
  * @property {module:Settings~CmcdSettings} cmcd
  * Settings related to Common Media Client Data reporting.
+ * @property {module:Settings~CmsdSettings} cmsd
+ * Settings related to Common Media Server Data parsing.
  */
 
 
@@ -974,6 +999,13 @@ function Settings() {
                 rtpSafetyFactor: 5,
                 mode: Constants.CMCD_MODE_QUERY,
                 enabledKeys: ['br', 'd', 'ot', 'tb' , 'bl', 'dl', 'mtp', 'nor', 'nrr', 'su' , 'bs', 'rtp' , 'cid', 'pr', 'sf', 'sid', 'st', 'v']
+            },
+            cmsd: {
+                enabled: false,
+                abr: {
+                    applyMb: false,
+                    etpWeightRatio: 0
+                }
             }
         },
         errors: {

diff --git a/src/core/events/CoreEvents.js b/src/core/events/CoreEvents.js
@@ -46,6 +46,7 @@ class CoreEvents extends EventsBase {
         this.BYTES_APPENDED_END_FRAGMENT = 'bytesAppendedEndFragment';
         this.BUFFER_REPLACEMENT_STARTED = 'bufferReplacementStarted';
         this.CHECK_FOR_EXISTENCE_COMPLETED = 'checkForExistenceCompleted';
+        this.CMSD_STATIC_HEADER = 'cmsdStaticHeader';
         this.CURRENT_TRACK_CHANGED = 'currentTrackChanged';
         this.DATA_UPDATE_COMPLETED = 'dataUpdateCompleted';
         this.INBAND_EVENTS = 'inbandEvents';

diff --git a/src/dash/DashMetrics.js b/src/dash/DashMetrics.js
@@ -345,7 +345,7 @@ function DashMetrics(config) {
      * @instance
      * @ignore
      */
-    function addHttpRequest(request, responseURL, responseStatus, responseHeaders, traces) {
+    function addHttpRequest(request, responseURL, responseStatus, responseHeaders, traces, cmsd) {
         metricsModel.addHttpRequest(request.mediaType,
             null,
             request.type,
@@ -361,7 +361,8 @@ function DashMetrics(config) {
             request.duration,
             responseHeaders,
             traces,
-            request.fileLoaderType);
+            request.fileLoaderType,
+            cmsd);
     }
 
     /**