mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-15 16:06:41 +03:00
Timothy Drews
22c57e99e4
This patch reworks SegmentIndexes so that any SegmentReference they contain is guaranteed to be available. This makes SegmentIndexes work consistently between static content and live content (specifically content specified using SegmentTemplate with @duration). * Rework StreamInfo to use a ISegmentIndexSource and a ISegmentInitSource, which construct a SegmentIndex and an intiailization segment respectively. * Make ManifestInfo destructible and various async operations in StreamVideoSource safer. * Introduce LiveSegmentIndex, which manages SegmentReference eviction. * Introduce DynamicLiveSegmentIndex, which manages SegmentReference eviction and generation. * Implement improved segment availability logic for segment eviction. * Move SegmentIndex construction from MpdProcessor to several ISegmentIndexSource implementations. * Use a SegmentIndex to represent subtitles to simplify Stream creation in StreamVideoSource. * Move manifest update code from StreamVideoSource to ManifestUpdater. * Move PeriodInfo.duration determination in MpdProcessor to StreamVideoSource. * Since "forced" manifest updates are no longer required for content specified using SegmentTemplate with @duration, simplify manifest update code in DashVideoSource. * Make Stream continue to update even if it runs out of SegmentReferences, this simplifies previous resync logic and makes DynamicLiveSegmentIndex work seamlessly. * Refactor SegmentIndex and initialization fetch code in ContentDatabase. * Download all SegmentIndexes in the background after the initial streams have started. Follow up work is required to remove seek range logic from DashVideoSource. Change-Id: I4a908195aba632a911a6e55213fc41d41428162b
51 lines
1.2 KiB
JavaScript
51 lines
1.2 KiB
JavaScript
/**
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* Copyright 2015 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @fileoverview Map utility functions.
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*/
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goog.provide('shaka.util.MapUtils');
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/**
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* @namespace shaka.util.MapUtils
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* @summary A set of map/object utility functions.
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*/
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/**
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* Returns true if the map is empty; otherwise, returns false.
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*
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* @param {!Object.<string, T>} object
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* @return {boolean}
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* @template T
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*/
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shaka.util.MapUtils.empty = function(object) {
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return Object.keys(object).length == 0;
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};
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/**
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* Gets the map's values.
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*
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* @param {!Object.<string, T>} object
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* @return {!Array.<T>}
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* @template T
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*/
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shaka.util.MapUtils.values = function(object) {
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return Object.keys(object).map(function(key) { return object[key]; });
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};
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