wrappers.js

var SBMonitor = []
var sysCallMap = {};
function getDiff(key) {
  let diff = 0;
  const now = new Date().getTime();
  if(sysCallMap[key]) {
    diff = now - sysCallMap[key];
  }
  sysCallMap[key] = now;

  return diff;
}

function bytesToMb(b) {
  return b * 9.537 * 10**-7;
}

var a = SourceBuffer.prototype.appendBuffer;
SourceBuffer.prototype.appendBuffer = function() {
  
  console.warn('[BROWSER API] SOURCEBUFFER.APPENDBUFFER ' + 'DIFFFROMLAST ' + getDiff('appendBuffer') + 'ms'  , 'Size: ' + bytesToMb(arguments[0].byteLength) + 'mb');
    SBMonitor.push(arguments);
    return a.apply(this, arguments);
}

var b = SourceBuffer.prototype.abort;
SourceBuffer.prototype.abort = function() {
  console.warn('[BROWSER API] SOURCEBUFFER.ABORT ' + 'DIFFFROMLAST ' + getDiff('abort') + 'ms'  , arguments[0]);
    return b.apply(this, arguments);
}

var c = MediaSource.prototype.addSourceBuffer;
MediaSource.prototype.addSourceBuffer = function() {
  
  console.warn('[BROWSER API] MEDIASOURCE.ADDSOURCEBUFFER ' + 'DIFFFROMLAST ' + getDiff('addSourceBuffer') + 'ms'  , arguments[0]);
    return c.apply(this, arguments);
}

var p = MediaSource.prototype.remove;
MediaSource.prototype.remove = function() {
  
  console.warn('[BROWSER API] MEDIASOURCE.ADDSOURCEBUFFER ' + 'DIFFFROMLAST ' + getDiff('remove') + 'ms'  , arguments[0]);
    return p.apply(this, arguments);
}

var d = MediaSource.prototype.clearLiveSeekableRange;
MediaSource.prototype.clearLiveSeekableRange = function() {
  
  console.warn('[BROWSER API] MEDIASOURCE.CLEARLIVESEEKABLERANGE ' + 'DIFFFROMLAST ' + getDiff('clearLiveSeekableRange') + 'ms'  , arguments[0]);
    return d.apply(this, arguments);
}

var e = MediaSource.prototype.setLiveSeekableRange;
MediaSource.prototype.setLiveSeekableRange = function() {
  
  console.warn('[BROWSER API] MEDIASOURCE.setLiveSeekableRange ' + 'DIFFFROMLAST ' + getDiff('setLiveSeekableRange') + 'ms'  , arguments[0]);
    return e.apply(this, arguments);
}

var f = MediaSource.prototype.removeSourceBuffer;
MediaSource.prototype.removeSourceBuffer = function() {
  
  console.warn('[BROWSER API] MEDIASOURCE.removeSourceBuffer ' + 'DIFFFROMLAST ' + getDiff('removeSourceBuffer') + 'ms'  , arguments[0]);
    return f.apply(this, arguments);
}

var g = MediaKeys.prototype.createSession;
MediaKeys.prototype.createSession = function() {
  
  console.warn('[BROWSER API] MEDIAKEYS.createSession ' + 'DIFFFROMLAST ' + getDiff('createSession') + 'ms'  , arguments[0]);
    return g.apply(this, arguments);
}

var h = MediaKeySession.prototype.close;
MediaKeySession.prototype.close = function() {
  
  console.warn('[BROWSER API] MEDIAKEYSESSION.CLOSE ' + 'DIFFFROMLAST ' + getDiff('close') + 'ms'  , arguments[0]);
    return h.apply(this, arguments);
}

var i = MediaKeySession.prototype.load;
MediaKeySession.prototype.load = function() {
  
  console.warn('[BROWSER API] MEDIAKEYSESSION.LOAD ' + 'DIFFFROMLAST ' + getDiff('load') + 'ms'  , arguments[0]);
    return i.apply(this, arguments);
}

var j = MediaKeySession.prototype.generateRequest;
MediaKeySession.prototype.generateRequest = function() {
  
  console.warn('[BROWSER API] MEDIAKEYSESSION.generateRequest ' + 'DIFFFROMLAST ' + getDiff('generateRequest') + 'ms'  , arguments[0]);
  return j.apply(this, arguments);
}

var k = MediaKeySession.prototype.remove;
MediaKeySession.prototype.remove = function() {
  
  console.warn('[BROWSER API] MEDIAKEYSESSION.remove ' + 'DIFFFROMLAST ' + getDiff('keysessionremove') + 'ms'  , arguments[0]);
  return k.apply(this, arguments);
}

var l = MediaKeySession.prototype.update;
MediaKeySession.prototype.update = function() {
  
  console.warn('[BROWSER API] MEDIAKEYSESSION.update ' + 'DIFFFROMLAST ' + getDiff('update') + 'ms'  , arguments[0]);
  return l.apply(this, arguments);
}

var m = MediaKeySystemAccess.prototype.createMediaKeys;
MediaKeySystemAccess.prototype.createMediaKeys = function() {
  
  console.warn('[BROWSER API] MEDIAKEYSESSION.createMediaKeys ' + 'DIFFFROMLAST ' + getDiff('createMediaKeys') + 'ms'  , arguments[0]);
  return m.apply(this, arguments);
}


  setInterval(function() {
    var vPQ = player.getVideoElement().getVideoPlaybackQuality();
    console.warn('[BROWSER API] HTMLVideoElement.getVideoPlaybackQuality()');
    console.warn(vPQ);
  },8000);