rx-player
Version:
Canal+ HTML5 Video Player
78 lines (77 loc) • 3.51 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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
var config_1 = require("../../../config");
var prioritized_segment_fetcher_1 = require("./prioritized_segment_fetcher");
var segment_fetcher_1 = require("./segment_fetcher");
var segment_queue_1 = require("./segment_queue");
var task_prioritizer_1 = require("./task_prioritizer");
/**
* Interact with the transport pipelines to download segments with the right
* priority.
*
* @class SegmentQueueCreator
*/
var SegmentQueueCreator = /** @class */ (function () {
/**
* @param {Object} transport
* @param {Object} cdnPrioritizer
* @param {Object|null} cmcdDataBuilder
* @param {Object} options
*/
function SegmentQueueCreator(transport, cdnPrioritizer, cmcdDataBuilder, options) {
var _a = config_1.default.getCurrent(), MIN_CANCELABLE_PRIORITY = _a.MIN_CANCELABLE_PRIORITY, MAX_HIGH_PRIORITY_LEVEL = _a.MAX_HIGH_PRIORITY_LEVEL;
this._transport = transport;
this._prioritizer = new task_prioritizer_1.default({
prioritySteps: {
high: MAX_HIGH_PRIORITY_LEVEL,
low: MIN_CANCELABLE_PRIORITY,
},
});
this._cdnPrioritizer = cdnPrioritizer;
this._backoffOptions = options;
this._cmcdDataBuilder = cmcdDataBuilder;
}
/**
* Create a `SegmentQueue`, allowing to easily perform segment requests.
* @param {string} bufferType - The type of buffer concerned (e.g. "audio",
* "video", etc.)
* @param {Object} eventListeners
* @param {Object} isMediaSegmentQueueInterrupted - Wheter the downloading of media
* segment should be interrupted or not.
* @returns {Object} - `SegmentQueue`, which is an abstraction allowing to
* perform a queue of segment requests for a given media type (here defined by
* `bufferType`) with associated priorities.
*/
SegmentQueueCreator.prototype.createSegmentQueue = function (bufferType, eventListeners, isMediaSegmentQueueInterrupted) {
var requestOptions = (0, segment_fetcher_1.getSegmentFetcherRequestOptions)(this._backoffOptions);
var pipelines = this._transport[bufferType];
// Types are very complicated here as they are per-type of buffer.
var segmentFetcher = (0, segment_fetcher_1.default)({
bufferType: bufferType,
pipeline: pipelines,
cdnPrioritizer: this._cdnPrioritizer,
cmcdDataBuilder: this._cmcdDataBuilder,
eventListeners: eventListeners,
requestOptions: requestOptions,
});
var prioritizedSegmentFetcher = (0, prioritized_segment_fetcher_1.default)(this._prioritizer, segmentFetcher);
return new segment_queue_1.default(prioritizedSegmentFetcher, isMediaSegmentQueueInterrupted);
};
return SegmentQueueCreator;
}());
exports.default = SegmentQueueCreator;