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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 Thumbnail from '../vo/Thumbnail.js';
import ThumbnailTracks from './ThumbnailTracks.js';
import {processUriTemplate} from '../../dash/utils/SegmentsUtils.js';
function ThumbnailController(config) {
const context = this.context;
const streamInfo = config.streamInfo;
let instance,
thumbnailTracks;
function setup() {
reset();
thumbnailTracks = ThumbnailTracks(context).create({
streamInfo: streamInfo,
adapter: config.adapter,
baseURLController: config.baseURLController,
timelineConverter: config.timelineConverter,
debug: config.debug,
eventBus: config.eventBus,
events: config.events,
dashConstants: config.dashConstants,
dashMetrics: config.dashMetrics,
segmentBaseController: config.segmentBaseController
});
}
function initialize() {
thumbnailTracks.addTracks();
const tracks = thumbnailTracks.getTracks();
if (tracks && tracks.length > 0) {
setTrackByIndex(0);
}
}
function getStreamId() {
return streamInfo.id;
}
function provide(time, callback) {
Iif (typeof callback !== 'function') {
return;
}
const track = thumbnailTracks.getCurrentTrack();
let offset,
request;
if (!track || track.segmentDuration <= 0 || time === undefined || time === null) {
callback(null);
return;
}
request = thumbnailTracks.getThumbnailRequestForTime(time);
Iif (request) {
track.segmentDuration = request.duration;
}
offset = time % track.segmentDuration;
const thumbIndex = Math.floor((offset * track.tilesHor * track.tilesVert) / track.segmentDuration);
// Create and return the thumbnail
const thumbnail = new Thumbnail();
thumbnail.width = Math.floor(track.widthPerTile);
thumbnail.height = Math.floor(track.heightPerTile);
thumbnail.x = Math.floor(thumbIndex % track.tilesHor) * track.widthPerTile;
thumbnail.y = Math.floor(thumbIndex / track.tilesHor) * track.heightPerTile;
Iif ('readThumbnail' in track) {
return track.readThumbnail(time, (url) => {
thumbnail.url = url;
callback(thumbnail);
});
} else {
if (!request) {
const seq = Math.floor(time / track.segmentDuration);
thumbnail.url = _buildUrlFromTemplate(track, seq);
} else E{
thumbnail.url = request.url;
track.segmentDuration = NaN;
}
callback(thumbnail);
}
}
function _buildUrlFromTemplate(track, seq) {
const seqIdx = seq + track.startNumber;
const url = processUriTemplate(
track.templateUrl,
undefined,
seqIdx,
undefined,
track.bandwidth,
(seqIdx - 1) * track.segmentDuration * track.timescale,
);
return url;
}
function setTrackByIndex(index) {
thumbnailTracks.setTrackByIndex(index);
}
function setTrackById(id) {
thumbnailTracks.setTrackById(id);
}
function getCurrentTrackIndex() {
return thumbnailTracks.getCurrentTrackIndex();
}
function getCurrentTrack() {
return thumbnailTracks.getCurrentTrack();
}
function getPossibleVoRepresentations() {
return thumbnailTracks.getRepresentations();
}
function reset() {
if (thumbnailTracks) {
thumbnailTracks.reset();
}
}
instance = {
getCurrentTrack,
getCurrentTrackIndex,
getPossibleVoRepresentations,
getStreamId,
initialize,
provide,
reset,
setTrackByIndex,
setTrackById
};
setup();
return instance;
}
ThumbnailController.__dashjs_factory_name = 'ThumbnailController';
export default FactoryMaker.getClassFactory(ThumbnailController);
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