rx-player
Version:
Canal+ HTML5 Video Player
42 lines (41 loc) • 1.62 kB
JavaScript
;
/**
* Copyright 2015 CANAL+ Group
*
* 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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = getClockOffset;
var log_1 = require("../../../../log");
var monotonic_timestamp_1 = require("../../../../utils/monotonic_timestamp");
/**
* Get difference between the server's clock, in milliseconds, and the
* monotonically-raising timestamp used by the RxPlayer.
* This property allows to calculate the server time at any moment.
*
* `undefined` if we could not define such offset (in which case, you could have
* to rely on the user's clock instead).
*
* For example, a response of 1000 would mean that the timestamp is 1 second
* behind the server's time.
* @param {string} serverClock
* @returns {number|undefined}
*/
function getClockOffset(serverClock) {
var httpOffset = Date.parse(serverClock) - (0, monotonic_timestamp_1.default)();
if (isNaN(httpOffset)) {
log_1.default.warn("DASH Parser: Invalid clock received: ", serverClock);
return undefined;
}
return httpOffset;
}