rx-player
Version:
Canal+ HTML5 Video Player
67 lines (66 loc) • 3.23 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 getLastPositionFromAdaptation from "./get_last_time_from_adaptation";
/**
* @param {Array.<Object>} periods
* @returns {number | undefined}
*/
export default function getMaximumPosition(periods) {
for (let i = periods.length - 1; i >= 0; 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 maximumAudioPosition = null;
let maximumVideoPosition = null;
if (firstAudioAdaptationFromPeriod !== undefined) {
const lastPosition = getLastPositionFromAdaptation(firstAudioAdaptationFromPeriod);
if (lastPosition === undefined) {
return { safe: undefined, unsafe: undefined };
}
maximumAudioPosition = lastPosition;
}
if (firstVideoAdaptationFromPeriod !== undefined) {
const lastPosition = getLastPositionFromAdaptation(firstVideoAdaptationFromPeriod);
if (lastPosition === undefined) {
return { safe: undefined, unsafe: undefined };
}
maximumVideoPosition = lastPosition;
}
if ((firstAudioAdaptationFromPeriod !== undefined && maximumAudioPosition === null) ||
(firstVideoAdaptationFromPeriod !== undefined && maximumVideoPosition === null)) {
log.info("utils", "found Period with no segment. ", "Going to previous one to calculate last position");
return { safe: undefined, unsafe: undefined };
}
if (maximumVideoPosition !== null) {
if (maximumAudioPosition !== null) {
return {
safe: Math.min(maximumAudioPosition, maximumVideoPosition),
unsafe: Math.max(maximumAudioPosition, maximumVideoPosition),
};
}
return { safe: maximumVideoPosition, unsafe: maximumVideoPosition };
}
if (maximumAudioPosition !== null) {
return { safe: maximumAudioPosition, unsafe: maximumAudioPosition };
}
}
}
return { safe: undefined, unsafe: undefined };
}