videojs-contrib-eme/es5/ms-prefixed.js

Supports Encrypted Media Extensions for playback of encrypted content in Video.js

'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true
});

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

var _videoJs = require('video.js');

var _videoJs2 = _interopRequireDefault(_videoJs);

var _globalWindow = require('global/window');

var _globalWindow2 = _interopRequireDefault(_globalWindow);

var _playready = require('./playready');

var PLAYREADY_KEY_SYSTEM = 'com.microsoft.playready';

exports.PLAYREADY_KEY_SYSTEM = PLAYREADY_KEY_SYSTEM;
var addKeyToSession = function addKeyToSession(options, session, event) {
  var playreadyOptions = options.keySystems[PLAYREADY_KEY_SYSTEM];

  if (typeof playreadyOptions.getKey === 'function') {
    playreadyOptions.getKey(options, event.destinationURL, event.message.buffer, function (err, key) {
      if (err) {
        _videoJs2['default'].log.error('Unable to get key: ' + err);
        return;
      }

      session.update(key);
    });
    return;
  }

  if (typeof playreadyOptions === 'string') {
    playreadyOptions = { url: playreadyOptions };
  }

  var url = playreadyOptions.url || event.destinationURL;

  (0, _playready.requestPlayreadyLicense)(url, event.message.buffer, function (err, response) {
    if (err) {
      _videoJs2['default'].log.error('Unable to request key from url: ' + url);
      return;
    }

    session.update(new Uint8Array(response.body));
  });
};

exports.addKeyToSession = addKeyToSession;
var createSession = function createSession(video, initData, options) {
  var session = video.msKeys.createSession('video/mp4', initData);

  if (!session) {
    _videoJs2['default'].log.error('Could not create key session.');
    return;
  }

  // Note that mskeymessage may not always be called for PlayReady:
  //
  // "If initData contains a PlayReady object that contains an OnDemand header, only a
  // keyAdded event is returned (as opposed to a keyMessage event as described in the
  // Encrypted Media Extension draft). Similarly, if initData contains a PlayReady object
  // that contains a key identifier in the hashed data storage (HDS), only a keyAdded
  // event is returned."
  // eslint-disable-next-line max-len
  // @see [PlayReady License Acquisition]{@link https://msdn.microsoft.com/en-us/library/dn468979.aspx}
  session.addEventListener('mskeymessage', function (event) {
    addKeyToSession(options, session, event);
  });

  session.addEventListener('mskeyerror', function (event) {
    _videoJs2['default'].log.error('Unexpected key error from key session with ' + ('code: ' + session.error.code + ' and systemCode: ' + session.error.systemCode));
  });
};

exports.createSession = createSession;

exports['default'] = function (_ref) {
  var video = _ref.video;
  var initData = _ref.initData;
  var options = _ref.options;

  // Although by the standard examples the presence of video.msKeys is checked first to
  // verify that we aren't trying to create a new session when one already exists, here
  // sessions are managed earlier (on the player.eme object), meaning that at this point
  // any existing keys should be cleaned up.
  if (video.msKeys) {
    delete video.msKeys;
  }

  try {
    video.msSetMediaKeys(new _globalWindow2['default'].MSMediaKeys(PLAYREADY_KEY_SYSTEM));
  } catch (e) {
    _videoJs2['default'].log.error('Unable to create media keys for PlayReady key system. Error: ' + e.message);
    return;
  }

  createSession(video, initData, options);
};