mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-17 16:26:39 +03:00
Joey Parrish
c13830e535
SegmentReference used to have presentationTimeOffset, which, subtracted from the period start time, was then _added_ to the timestamps in the segment by MediaSource. Now, SegmentReference has a timestampOffset field, which is exactly what MediaSource's timestampOffset field is set to on the SourceBuffer before this segment is appended. For DASH, this is periodStart minus presentationTimeOffset. This also adds append window start & end times to the SegmentReference. Now segments can be appended to SourceBuffers without reference to the period. Note that start & end times of the SegmentReference in each segment index are still relative to the period. This will change in a follow-up. Issue #1339 (flatten periods) Issue #892 (refactor StreamingEngine) Change-Id: I9d54eb2b529ec643c9475b8e9d218c3e2e826a26
361 lines
14 KiB
JavaScript
361 lines
14 KiB
JavaScript
/** @license
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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describe('DashParser SegmentBase', () => {
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const Dash = shaka.test.Dash;
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const indexSegmentUri = '/base/test/test/assets/index-segment.mp4';
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/** @type {!shaka.test.FakeNetworkingEngine} */
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let fakeNetEngine;
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/** @type {!shaka.dash.DashParser} */
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let parser;
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/** @type {shaka.extern.ManifestParser.PlayerInterface} */
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let playerInterface;
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/** @type {!ArrayBuffer} */
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let indexSegment;
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beforeAll(async () => {
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indexSegment = await shaka.test.Util.fetch(indexSegmentUri);
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});
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beforeEach(() => {
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fakeNetEngine = new shaka.test.FakeNetworkingEngine();
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parser = shaka.test.Dash.makeDashParser();
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playerInterface = {
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networkingEngine: fakeNetEngine,
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filterNewPeriod: () => {},
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filterAllPeriods: () => {},
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onTimelineRegionAdded: fail, // Should not have any EventStream elements.
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onEvent: fail,
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onError: fail,
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};
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});
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it('requests init data for WebM', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <BaseURL>http://example.com</BaseURL>',
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' <Period>',
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' <AdaptationSet mimeType="video/webm">',
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' <Representation id="1" bandwidth="1">',
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' <BaseURL>media-1.webm</BaseURL>',
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' <SegmentBase indexRange="100-200" timescale="9000">',
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' <Initialization sourceURL="init-1.webm" range="201-300" />',
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' </SegmentBase>',
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' </Representation>',
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' <Representation id="2" bandwidth="1">',
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' <BaseURL>media-2.webm</BaseURL>',
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' <SegmentBase indexRange="1100-1200" timescale="9000">',
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' <Initialization sourceURL="init-2.webm" range="1201-1300" />',
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' </SegmentBase>',
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' </Representation>',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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fakeNetEngine
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.setResponseText('dummy://foo', source)
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.setResponseText('http://example.com/media-1.webm', '')
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.setResponseText('http://example.com/media-2.webm', '')
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.setResponseText('http://example.com/init-1.webm', '')
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.setResponseText('http://example.com/init-2.webm', '');
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/** @type {shaka.extern.Manifest} */
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const manifest = await parser.start('dummy://foo', playerInterface);
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// Call createSegmentIndex() on each stream to make the requests, but expect
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// failure from the actual parsing, since the data is bogus.
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const stream1 = manifest.periods[0].variants[0].video;
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await expectAsync(stream1.createSegmentIndex()).toBeRejected();
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const stream2 = manifest.periods[0].variants[1].video;
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await expectAsync(stream2.createSegmentIndex()).toBeRejected();
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expect(fakeNetEngine.request).toHaveBeenCalledTimes(5);
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// Expect calls to fetch part of the media and init segments of each stream.
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fakeNetEngine.expectRangeRequest(
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'http://example.com/media-1.webm', 100, 200);
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fakeNetEngine.expectRangeRequest(
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'http://example.com/init-1.webm', 201, 300);
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fakeNetEngine.expectRangeRequest(
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'http://example.com/media-2.webm', 1100, 1200);
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fakeNetEngine.expectRangeRequest(
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'http://example.com/init-2.webm', 1201, 1300);
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});
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it('inherits from Period', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <Period>',
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' <BaseURL>http://example.com</BaseURL>',
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' <SegmentBase indexRange="100-200" timescale="9000">',
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' <Initialization sourceURL="init.mp4" range="201-300" />',
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' </SegmentBase>',
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' <AdaptationSet mimeType="video/mp4">',
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' <Representation bandwidth="1" />',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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fakeNetEngine
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.setResponseText('dummy://foo', source)
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.setResponseValue('http://example.com', indexSegment);
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/** @type {shaka.extern.Manifest} */
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const manifest = await parser.start('dummy://foo', playerInterface);
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const segmentReference = await Dash.getFirstVideoSegmentReference(manifest);
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const initSegmentReference = segmentReference.initSegmentReference;
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expect(initSegmentReference.getUris()).toEqual(
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['http://example.com/init.mp4']);
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expect(initSegmentReference.getStartByte()).toBe(201);
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expect(initSegmentReference.getEndByte()).toBe(300);
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expect(fakeNetEngine.request).toHaveBeenCalledTimes(2);
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fakeNetEngine.expectRangeRequest('http://example.com', 100, 200);
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});
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it('inherits from AdaptationSet', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <Period>',
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' <AdaptationSet mimeType="video/mp4">',
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' <BaseURL>http://example.com</BaseURL>',
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' <SegmentBase indexRange="100-200" timescale="9000">',
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' <Initialization sourceURL="init.mp4" range="201-300" />',
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' </SegmentBase>',
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' <Representation bandwidth="1" />',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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fakeNetEngine
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.setResponseText('dummy://foo', source)
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.setResponseValue('http://example.com', indexSegment);
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/** @type {shaka.extern.Manifest} */
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const manifest = await parser.start('dummy://foo', playerInterface);
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const segmentReference = await Dash.getFirstVideoSegmentReference(manifest);
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const initSegmentReference = segmentReference.initSegmentReference;
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expect(initSegmentReference.getUris()).toEqual(
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['http://example.com/init.mp4']);
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expect(initSegmentReference.getStartByte()).toBe(201);
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expect(initSegmentReference.getEndByte()).toBe(300);
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expect(fakeNetEngine.request).toHaveBeenCalledTimes(2);
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fakeNetEngine.expectRangeRequest('http://example.com', 100, 200);
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});
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it('does not require sourceURL in Initialization', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <Period>',
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' <AdaptationSet mimeType="video/mp4">',
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' <Representation bandwidth="1">',
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' <BaseURL>http://example.com/stream.mp4</BaseURL>',
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' <SegmentBase indexRange="100-200" timescale="9000">',
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' <Initialization range="201-300" />',
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' </SegmentBase>',
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' </Representation>',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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fakeNetEngine
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.setResponseText('dummy://foo', source)
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.setResponseValue('http://example.com/stream.mp4', indexSegment);
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/** @type {shaka.extern.Manifest} */
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const manifest = await parser.start('dummy://foo', playerInterface);
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const segmentReference = await Dash.getFirstVideoSegmentReference(manifest);
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const initSegmentReference = segmentReference.initSegmentReference;
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expect(initSegmentReference.getUris()).toEqual(
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['http://example.com/stream.mp4']);
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expect(initSegmentReference.getStartByte()).toBe(201);
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expect(initSegmentReference.getEndByte()).toBe(300);
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expect(fakeNetEngine.request).toHaveBeenCalledTimes(2);
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fakeNetEngine.expectRangeRequest('http://example.com/stream.mp4', 100, 200);
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});
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it('merges across levels', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <Period>',
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' <BaseURL>http://example.com</BaseURL>',
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' <SegmentBase timescale="9000">',
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' <Initialization sourceURL="init.mp4" range="201-300" />',
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' </SegmentBase>',
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' <AdaptationSet mimeType="video/mp4">',
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' <SegmentBase presentationTimeOffset="90000">',
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' <Initialization sourceURL="init.mp4" range="201-300" />',
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' </SegmentBase>',
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' <Representation bandwidth="1">',
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' <SegmentBase>',
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' <RepresentationIndex sourceURL="index.mp4" range="5-2000" />',
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' </SegmentBase>',
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' </Representation>',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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fakeNetEngine
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.setResponseText('dummy://foo', source)
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.setResponseValue('http://example.com/index.mp4', indexSegment);
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/** @type {shaka.extern.Manifest} */
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const manifest = await parser.start('dummy://foo', playerInterface);
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const segmentReference = await Dash.getFirstVideoSegmentReference(manifest);
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const initSegmentReference = segmentReference.initSegmentReference;
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expect(initSegmentReference.getUris()).toEqual(
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['http://example.com/init.mp4']);
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expect(initSegmentReference.getStartByte()).toBe(201);
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expect(initSegmentReference.getEndByte()).toBe(300);
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expect(segmentReference.timestampOffset).toBe(-10);
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expect(fakeNetEngine.request).toHaveBeenCalledTimes(2);
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fakeNetEngine.expectRangeRequest('http://example.com/index.mp4', 5, 2000);
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});
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it('merges and overrides across levels', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <Period>',
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' <BaseURL>http://example.com</BaseURL>',
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' <SegmentBase indexRange="0-10" timescale="9000">',
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' <Initialization sourceURL="init.mp4" range="201-300" />',
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' </SegmentBase>',
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' <AdaptationSet mimeType="video/mp4">',
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' <SegmentBase timescale="10" presentationTimeOffset="10">',
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' <Initialization sourceURL="special.mp4" />',
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' </SegmentBase>',
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' <Representation bandwidth="1">',
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' <SegmentBase indexRange="30-900" ',
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' presentationTimeOffset="200" />',
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' </Representation>',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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fakeNetEngine
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.setResponseText('dummy://foo', source)
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.setResponseValue('http://example.com', indexSegment);
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/** @type {shaka.extern.Manifest} */
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const manifest = await parser.start('dummy://foo', playerInterface);
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const segmentReference = await Dash.getFirstVideoSegmentReference(manifest);
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const initSegmentReference = segmentReference.initSegmentReference;
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expect(initSegmentReference.getUris()).toEqual(
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['http://example.com/special.mp4']);
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expect(initSegmentReference.getStartByte()).toBe(0);
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expect(initSegmentReference.getEndByte()).toBe(null);
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expect(segmentReference.timestampOffset).toBe(-20);
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expect(fakeNetEngine.request).toHaveBeenCalledTimes(2);
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fakeNetEngine.expectRangeRequest('http://example.com', 30, 900);
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});
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it('does not assume the same timescale as media', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <Period>',
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' <AdaptationSet mimeType="video/mp4">',
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' <Representation bandwidth="1">',
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' <BaseURL>http://example.com/index.mp4</BaseURL>',
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' <SegmentBase indexRange="30-900" ',
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' timescale="1000"',
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' presentationTimeOffset="2000" />',
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' </Representation>',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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fakeNetEngine
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.setResponseText('dummy://foo', source)
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.setResponseValue('http://example.com/index.mp4', indexSegment);
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/** @type {shaka.extern.Manifest} */
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const manifest = await parser.start('dummy://foo', playerInterface);
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const video = manifest.periods[0].variants[0].video;
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await video.createSegmentIndex(); // real data, should succeed
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const reference = video.segmentIndex.get(0);
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expect(reference.startTime).toBe(-2);
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expect(reference.endTime).toBe(10); // would be 12 without PTO
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});
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describe('fails for', () => {
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it('unsupported container', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <Period>',
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' <BaseURL>http://example.com</BaseURL>',
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' <AdaptationSet mimeType="video/cat">',
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' <Representation bandwidth="1">',
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' <SegmentBase indexRange="30-900" />',
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' </Representation>',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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const error = new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.MANIFEST,
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shaka.util.Error.Code.DASH_UNSUPPORTED_CONTAINER);
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await Dash.testFails(source, error);
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});
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it('missing init segment for WebM', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <Period>',
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' <BaseURL>http://example.com</BaseURL>',
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' <AdaptationSet mimeType="video/webm">',
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' <Representation bandwidth="1">',
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' <SegmentBase indexRange="30-900" />',
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' </Representation>',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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const error = new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.MANIFEST,
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shaka.util.Error.Code.DASH_WEBM_MISSING_INIT);
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await Dash.testFails(source, error);
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});
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it('no @indexRange nor RepresentationIndex', async () => {
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const source = [
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'<MPD mediaPresentationDuration="PT75S">',
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' <Period>',
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' <BaseURL>http://example.com</BaseURL>',
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' <AdaptationSet mimeType="video/webm">',
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' <Representation bandwidth="1">',
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' <SegmentBase>',
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' <Initialization sourceURL="test.webm" />',
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' </SegmentBase>',
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' </Representation>',
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' </AdaptationSet>',
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' </Period>',
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'</MPD>',
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].join('\n');
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const error = new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.MANIFEST,
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shaka.util.Error.Code.DASH_NO_SEGMENT_INFO);
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await Dash.testFails(source, error);
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});
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});
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});
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