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* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and contributor
* rights, including patent rights, and no such rights are granted under this license.
*
* Copyright (c) 2013, Dash Industry Forum.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * Neither the name of Dash Industry Forum nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import FactoryMaker from '../../core/FactoryMaker.js';
import Constants from '../../streaming/constants/Constants.js';
function SegmentBaseGetter(config) {
config = config || {};
const timelineConverter = config.timelineConverter;
let instance;
function checkConfig() {
if (!timelineConverter || !timelineConverter.hasOwnProperty('calcPeriodRelativeTimeFromMpdRelativeTime')) {
throw new Error(Constants.MISSING_CONFIG_ERROR);
}
}
function getMediaFinishedInformation(representation) {
const mediaFinishedInformation = { numberOfSegments: 0, mediaTimeOfLastSignaledSegment: NaN }
if (!representation || !representation.segments) {
return mediaFinishedInformation
}
mediaFinishedInformation.numberOfSegments = representation.segments.length;
return mediaFinishedInformation;
}
function getSegmentByIndex(representation, index) {
checkConfig();
if (!representation) {
return null;
}
const len = representation.segments ? representation.segments.length : -1;
let seg;
if (index < len) {
seg = representation.segments[index];
if (seg && seg.index === index) {
return seg;
}
}
for (let i = 0; i < len; i++) {
seg = representation.segments[i];
Iif (seg && seg.index === index) {
return seg;
}
}
return null;
}
function getSegmentByTime(representation, requestedTime) {
checkConfig();
const index = getIndexByTime(representation, requestedTime);
return getSegmentByIndex(representation, index);
}
function getIndexByTime(representation, time) {
Iif (!representation) {
return -1;
}
const segments = representation.segments;
const ln = segments ? segments.length : null;
let idx = -1;
let epsilon,
seg,
ft,
fd,
i;
if (segments && ln > 0) {
for (i = 0; i < ln; i++) {
seg = segments[i];
ft = seg.presentationStartTime;
fd = seg.duration;
epsilon = fd / 2;
if ((time + epsilon) >= ft &&
(time - epsilon) < (ft + fd)) {
idx = seg.index;
break;
}
}
}
return idx;
}
instance = {
getSegmentByIndex,
getSegmentByTime,
getMediaFinishedInformation
};
return instance;
}
SegmentBaseGetter.__dashjs_factory_name = 'SegmentBaseGetter';
const factory = FactoryMaker.getClassFactory(SegmentBaseGetter);
export default factory;
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