mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-16 16:16:40 +03:00
Michelle Zhuo
a09ae24b85
Added a preferred audio channel count to configuration, default set to 2. Choose the codec with the largest number of audio channels less than or equal to the configured number of output channels. If this is not possible, choose the smallest number of channels. Closes #1013. Issue #1071. Change-Id: I6c6a956e33637cf34bd4bd79af563dc10a595e94
467 lines
13 KiB
JavaScript
467 lines
13 KiB
JavaScript
/**
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* @license
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* Copyright 2016 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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describe('ManifestConverter', function() {
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describe('createVariants', function() {
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const audioType = 'audio';
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const videoType = 'video';
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it('will create variants with variant ids', function() {
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/** @type {!Array.<shakaExtern.StreamDB>} */
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let audios = [
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createStreamDB(0, audioType, [0]),
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createStreamDB(1, audioType, [1])
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];
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/** @type {!Array.<shakaExtern.StreamDB>} */
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let videos = [
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createStreamDB(2, videoType, [0]),
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createStreamDB(3, videoType, [1])
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];
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/** @type {!Array.<shakaExtern.Variant>} */
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let variants = createConverter().createVariants(audios, videos);
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expect(variants.length).toBe(2);
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expect(variants[0].audio.id).toBe(0);
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expect(variants[0].video.id).toBe(2);
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expect(variants[1].audio.id).toBe(1);
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expect(variants[1].video.id).toBe(3);
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});
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it('will create variants when there is only audio', function() {
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/** @type {!Array.<shakaExtern.StreamDB>} */
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let audios = [
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createStreamDB(0, audioType, [0]),
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createStreamDB(1, audioType, [1])
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];
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/** @type {!Array.<shakaExtern.StreamDB>} */
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let videos = [];
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/** @type {!Array.<shakaExtern.Variant>} */
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let variants = createConverter().createVariants(audios, videos);
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expect(variants.length).toBe(2);
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});
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it('will create variants when there is only video', function() {
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/** @type {!Array.<shakaExtern.StreamDB>} */
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let audios = [];
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/** @type {!Array.<shakaExtern.StreamDB>} */
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let videos = [
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createStreamDB(2, videoType, [0]),
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createStreamDB(3, videoType, [1])
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];
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/** @type {!Array.<shakaExtern.Variant>} */
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let variants = createConverter().createVariants(audios, videos);
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expect(variants.length).toBe(2);
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});
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}); // describe('createVariants')
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describe('fromPeriodDB', function() {
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it('will reconstruct Periods correctly', function() {
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/** @type {shakaExtern.PeriodDB} */
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let periodDb = {
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startTime: 60,
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streams: [createVideoStreamDB(1, [0]), createAudioStreamDB(2, [0])]
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};
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let timeline = createTimeline();
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let period = createConverter().fromPeriodDB(periodDb, timeline);
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expect(period).toBeTruthy();
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expect(period.startTime).toBe(periodDb.startTime);
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expect(period.textStreams).toEqual([]);
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expect(period.variants.length).toBe(1);
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let variant = period.variants[0];
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expect(variant.id).toEqual(jasmine.any(Number));
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expect(variant.language).toBe(periodDb.streams[1].language);
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expect(variant.primary).toBe(false);
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expect(variant.bandwidth).toEqual(jasmine.any(Number));
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expect(variant.allowedByApplication).toBe(true);
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expect(variant.allowedByKeySystem).toBe(true);
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verifyStream(variant.video, periodDb.streams[0]);
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verifyStream(variant.audio, periodDb.streams[1]);
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});
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it('supports video-only content', function() {
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/** @type {shakaExtern.PeriodDB} */
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let periodDb = {
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startTime: 60,
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streams: [createVideoStreamDB(1, [0]), createVideoStreamDB(2, [1])]
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};
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let timeline = createTimeline();
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let period = createConverter().fromPeriodDB(periodDb, timeline);
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expect(period).toBeTruthy();
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expect(period.variants.length).toBe(2);
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expect(period.variants[0].audio).toBe(null);
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expect(period.variants[0].video).toBeTruthy();
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});
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it('supports audio-only content', function() {
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/** @type {shakaExtern.PeriodDB} */
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let periodDb = {
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startTime: 60,
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streams: [createAudioStreamDB(1, [0]), createAudioStreamDB(2, [1])]
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};
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let timeline = createTimeline();
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let period = createConverter().fromPeriodDB(periodDb, timeline);
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expect(period).toBeTruthy();
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expect(period.variants.length).toBe(2);
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expect(period.variants[0].audio).toBeTruthy();
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expect(period.variants[0].video).toBe(null);
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});
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it('supports text streams', function() {
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/** @type {shakaExtern.PeriodDB} */
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let periodDb = {
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startTime: 60,
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streams: [
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createVideoStreamDB(1, [0]),
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createTextStreamDB(2)
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]
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};
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let timeline = createTimeline();
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let period = createConverter().fromPeriodDB(periodDb, timeline);
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expect(period).toBeTruthy();
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expect(period.variants.length).toBe(1);
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expect(period.textStreams.length).toBe(1);
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verifyStream(period.textStreams[0], periodDb.streams[1]);
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});
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it('combines Variants according to variantIds field', function() {
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const audio1 = 0;
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const audio2 = 1;
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const video1 = 2;
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const video2 = 3;
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const variant1 = 0;
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const variant2 = 1;
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const variant3 = 2;
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/** @type {shakaExtern.PeriodDB} */
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let periodDb = {
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startTime: 60,
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streams: [
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// Audio
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createAudioStreamDB(audio1, [variant2]),
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createAudioStreamDB(audio2, [variant1, variant3]),
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// Video
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createVideoStreamDB(video1, [variant1]),
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createVideoStreamDB(video2, [variant2, variant3])
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]
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};
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let timeline = createTimeline();
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/** @type {shakaExtern.Period} */
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let period = createConverter().fromPeriodDB(periodDb, timeline);
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expect(period).toBeTruthy();
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expect(period.variants.length).toBe(3);
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// Variant 1
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expect(findVariant(period.variants, audio2, video1)).toBeTruthy();
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// Variant 2
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expect(findVariant(period.variants, audio1, video2)).toBeTruthy();
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// Variant 3
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expect(findVariant(period.variants, audio2, video2)).toBeTruthy();
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});
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}); // describe('fromPeriodDB')
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/** @return {!shaka.offline.ManifestConverter} */
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function createConverter() {
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return new shaka.offline.ManifestConverter('mechanism', 'cell');
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}
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/** @return {!shaka.media.PresentationTimeline} */
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function createTimeline() {
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return new shaka.media.PresentationTimeline(null, 0);
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}
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/**
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* @param {number} id
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* @param {string} type
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* @param {!Array.<number>} variants
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* @return {shakaExtern.StreamDB}
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*/
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function createStreamDB(id, type, variants) {
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/** @type {shakaExtern.StreamDB} */
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let streamDB = {
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id: id,
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primary: false,
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presentationTimeOffset: 0,
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contentType: type,
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mimeType: '',
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codecs: '',
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language: '',
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label: null,
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width: null,
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height: null,
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initSegmentKey: null,
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encrypted: false,
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keyId: null,
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segments: [],
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variantIds: variants
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};
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return streamDB;
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}
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/**
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* @param {number} startTime
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* @param {number} endTime
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* @param {number} dataKey
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* @return {shakaExtern.SegmentDB}
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*/
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function createSegmentDB(startTime, endTime, dataKey) {
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/** @type {shakaExtern.SegmentDB} */
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let segment = {
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startTime: startTime,
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endTime: endTime,
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dataKey: dataKey
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};
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return segment;
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}
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/**
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* @param {number} id
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* @param {!Array.<number>} variantIds
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* @return {shakaExtern.StreamDB}
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*/
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function createVideoStreamDB(id, variantIds) {
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const ContentType = shaka.util.ManifestParserUtils.ContentType;
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return {
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id: id,
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primary: false,
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presentationTimeOffset: 25,
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contentType: ContentType.VIDEO,
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mimeType: 'video/mp4',
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codecs: 'avc1.42c01e',
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frameRate: 22,
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kind: undefined,
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language: '',
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label: null,
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width: 250,
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height: 100,
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initSegmentKey: null,
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encrypted: true,
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keyId: 'key1',
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segments: [
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createSegmentDB(
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/* start time */ 0,
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/* end time */ 10,
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/* data key */ 1),
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createSegmentDB(
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/* start time */ 10,
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/* end time */ 20,
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/* data key */ 2),
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createSegmentDB(
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/* start time */ 20,
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/* end time */ 25,
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/* data key */ 3)
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],
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variantIds: variantIds
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};
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}
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/**
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* @param {number} id
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* @param {!Array.<number>} variantIds
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* @return {shakaExtern.StreamDB}
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*/
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function createAudioStreamDB(id, variantIds) {
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const ContentType = shaka.util.ManifestParserUtils.ContentType;
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return {
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id: id,
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primary: false,
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presentationTimeOffset: 10,
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contentType: ContentType.AUDIO,
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mimeType: 'audio/mp4',
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codecs: 'mp4a.40.2',
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frameRate: undefined,
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kind: undefined,
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language: 'en',
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label: null,
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width: null,
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height: null,
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initSegmentKey: 0,
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encrypted: false,
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keyId: null,
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segments: [
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createSegmentDB(
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/* start time */ 0,
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/* end time */ 10,
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/* data key */ 1),
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createSegmentDB(
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/* start time */ 10,
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/* end time */ 20,
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/* data key */ 2),
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createSegmentDB(
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/* start time */ 20,
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/* end time */ 25,
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/* data key */ 3)
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],
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variantIds: variantIds
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};
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}
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/**
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* @param {number} id
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* @return {shakaExtern.StreamDB}
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*/
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function createTextStreamDB(id) {
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const ContentType = shaka.util.ManifestParserUtils.ContentType;
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return {
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id: id,
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primary: false,
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presentationTimeOffset: 10,
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contentType: ContentType.TEXT,
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mimeType: 'text/vtt',
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codecs: '',
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frameRate: undefined,
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kind: undefined,
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language: 'en',
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label: null,
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width: null,
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height: null,
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initSegmentKey: 0,
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encrypted: false,
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keyId: null,
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segments: [
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createSegmentDB(
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/* start time */ 0,
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/* end time */ 10,
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/* data key */ 1),
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createSegmentDB(
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/* start time */ 10,
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/* end time */ 20,
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/* data key */ 2),
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createSegmentDB(
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/* start time */ 20,
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/* end time */ 25,
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/* data key */ 3)
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],
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variantIds: [5]
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};
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}
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/**
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* @param {?shakaExtern.Stream} stream
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* @param {?shakaExtern.StreamDB} streamDb
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*/
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function verifyStream(stream, streamDb) {
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if (!streamDb) {
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expect(stream).toBeFalsy();
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return;
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}
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let expectedStream = {
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id: jasmine.any(Number),
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createSegmentIndex: jasmine.any(Function),
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findSegmentPosition: jasmine.any(Function),
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getSegmentReference: jasmine.any(Function),
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initSegmentReference: streamDb.initSegmentKey != null ?
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jasmine.any(shaka.media.InitSegmentReference) :
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null,
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presentationTimeOffset: streamDb.presentationTimeOffset,
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mimeType: streamDb.mimeType,
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codecs: streamDb.codecs,
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frameRate: streamDb.frameRate,
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width: streamDb.width || undefined,
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height: streamDb.height || undefined,
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kind: streamDb.kind,
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encrypted: streamDb.encrypted,
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keyId: streamDb.keyId,
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language: streamDb.language,
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label: streamDb.label,
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type: streamDb.contentType,
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primary: streamDb.primary,
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trickModeVideo: null,
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containsEmsgBoxes: false,
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roles: [],
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channelCount: null
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};
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expect(stream).toEqual(expectedStream);
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// Assume that we don't have to call createSegmentIndex.
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streamDb.segments.forEach(function(segmentDb, i) {
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let uri = shaka.offline.OfflineUri.segment(
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'mechanism', 'cell', segmentDb.dataKey);
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expect(stream.findSegmentPosition(segmentDb.startTime)).toBe(i);
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expect(stream.findSegmentPosition(segmentDb.endTime - 0.1)).toBe(i);
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/** @type {shaka.media.SegmentReference} */
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let segment = stream.getSegmentReference(i);
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expect(segment).toBeTruthy();
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expect(segment.position).toBe(i);
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expect(segment.startTime).toBe(segmentDb.startTime);
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expect(segment.endTime).toBe(segmentDb.endTime);
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expect(segment.startByte).toBe(0);
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expect(segment.endByte).toBe(null);
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expect(segment.getUris()).toEqual([uri.toString()]);
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});
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}
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/**
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* @param {!Array.<shakaExtern.Variant>} variants
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* @param {?number} audioId
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* @param {?number} videoId
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* @return {?shakaExtern.Variant}
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*/
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function findVariant(variants, audioId, videoId) {
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/** @type {?shakaExtern.Variant} */
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let found = null;
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variants.forEach(function(variant) {
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/** @type {?shakaExtern.Stream} */
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let audio = variant.audio;
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/** @type {?shakaExtern.Stream} */
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let video = variant.video;
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/** @type {boolean } */
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let audioMatch = audio ? audioId == audio.id : audioId == null;
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/** @type {boolean } */
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let videoMatch = video ? videoId == video.id : videoId == null;
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if (audioMatch && videoMatch) {
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found = variant;
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}
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});
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return found;
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}
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});
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