rx-player
Version:
Canal+ HTML5 Video Player
69 lines (68 loc) • 2.74 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.
*/
import isNullOrUndefined from "../../../../utils/is_null_or_undefined";
/**
* Get periods time information from current, next and previous
* periods.
* @param {Array.<Object>} periodsIR
* @param {Object} manifestInfos
* @return {Array.<Object>}
*/
export default function getPeriodsTimeInformation(periodsIR, manifestInfos) {
const periodsTimeInformation = [];
periodsIR.forEach((currentPeriod, i) => {
let periodStart;
if (!isNullOrUndefined(currentPeriod.attributes.start)) {
periodStart = currentPeriod.attributes.start;
}
else {
if (i === 0) {
periodStart =
!manifestInfos.isDynamic ||
isNullOrUndefined(manifestInfos.availabilityStartTime)
? 0
: manifestInfos.availabilityStartTime;
}
else {
// take time information from previous period
const prevPeriodInfos = periodsTimeInformation[periodsTimeInformation.length - 1];
if (!isNullOrUndefined(prevPeriodInfos) &&
!isNullOrUndefined(prevPeriodInfos.periodEnd)) {
periodStart = prevPeriodInfos.periodEnd;
}
else {
throw new Error("Missing start time when parsing periods.");
}
}
}
let periodDuration;
const nextPeriod = periodsIR[i + 1];
if (!isNullOrUndefined(currentPeriod.attributes.duration)) {
periodDuration = currentPeriod.attributes.duration;
}
else if (i === periodsIR.length - 1) {
periodDuration = manifestInfos.duration;
}
else if (!isNullOrUndefined(nextPeriod.attributes.start)) {
periodDuration = nextPeriod.attributes.start - periodStart;
}
const periodEnd = !isNullOrUndefined(periodDuration)
? periodStart + periodDuration
: undefined;
periodsTimeInformation.push({ periodStart, periodDuration, periodEnd });
});
return periodsTimeInformation;
}