rx-player
Version:
Canal+ HTML5 Video Player
63 lines (62 loc) • 2.88 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 log from "../../../log";
import getFirstPositionFromAdaptation from "./get_first_time_from_adaptation";
/**
* @param {Array.<Object>} periods
* @returns {number | undefined}
*/
export default function getMinimumPosition(periods) {
for (let i = 0; i <= periods.length - 1; i++) {
const periodAdaptations = periods[i].adaptations;
const firstAudioAdaptationFromPeriod = periodAdaptations.audio === undefined ? undefined : periodAdaptations.audio[0];
const firstVideoAdaptationFromPeriod = periodAdaptations.video === undefined ? undefined : periodAdaptations.video[0];
if (firstAudioAdaptationFromPeriod !== undefined ||
firstVideoAdaptationFromPeriod !== undefined) {
// null == no segment
let minimumAudioPosition = null;
let minimumVideoPosition = null;
if (firstAudioAdaptationFromPeriod !== undefined) {
const firstPosition = getFirstPositionFromAdaptation(firstAudioAdaptationFromPeriod);
if (firstPosition === undefined) {
return undefined;
}
minimumAudioPosition = firstPosition;
}
if (firstVideoAdaptationFromPeriod !== undefined) {
const firstPosition = getFirstPositionFromAdaptation(firstVideoAdaptationFromPeriod);
if (firstPosition === undefined) {
return undefined;
}
minimumVideoPosition = firstPosition;
}
if ((firstAudioAdaptationFromPeriod !== undefined && minimumAudioPosition === null) ||
(firstVideoAdaptationFromPeriod !== undefined && minimumVideoPosition === null)) {
log.info("utils", "found Period with no segment. ", "Going to next one to calculate first position");
return undefined;
}
if (minimumVideoPosition !== null) {
if (minimumAudioPosition !== null) {
return Math.max(minimumAudioPosition, minimumVideoPosition);
}
return minimumVideoPosition;
}
if (minimumAudioPosition !== null) {
return minimumAudioPosition;
}
}
}
}