mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-15 16:06:41 +03:00
Theodore Abshire
3a67802ce2
It turns out that, on some browsers, incomplete XML does not properly parse. This means the parseFirstCue tests did not work on those platforms. This modifies those tests on platforms that do not support partial XML; when no support is detected, it instead tries to get the first cue from a non-partial segment. This also modifies the HLS parser to only load partial text segments if the text parser supports it; otherwise, the hls parser will load full captions in order to extract start times. b/137945635 Issue #2037 Change-Id: I58112864a818baf155b365a65fba1c8a56eb9520
108 lines
3.8 KiB
JavaScript
108 lines
3.8 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('Mp4TtmlParser', () => {
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const ttmlInitSegmentUri = '/base/test/test/assets/ttml-init.mp4';
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const ttmlSegmentUri = '/base/test/test/assets/ttml-segment.mp4';
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const ttmlSegmentMultipleMDATUri =
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'/base/test/test/assets/ttml-segment-multiplemdat.mp4';
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const audioInitSegmentUri = '/base/test/test/assets/sintel-audio-init.mp4';
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/** @type {!Uint8Array} */
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let ttmlInitSegment;
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/** @type {!Uint8Array} */
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let ttmlSegment;
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/** @type {!Uint8Array} */
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let ttmlSegmentMultipleMDAT;
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/** @type {!Uint8Array} */
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let audioInitSegment;
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beforeAll(async () => {
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const responses = await Promise.all([
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shaka.test.Util.fetch(ttmlInitSegmentUri),
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shaka.test.Util.fetch(ttmlSegmentUri),
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shaka.test.Util.fetch(ttmlSegmentMultipleMDATUri),
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shaka.test.Util.fetch(audioInitSegmentUri),
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]);
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ttmlInitSegment = new Uint8Array(responses[0]);
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ttmlSegment = new Uint8Array(responses[1]);
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ttmlSegmentMultipleMDAT = new Uint8Array(responses[2]);
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audioInitSegment = new Uint8Array(responses[3]);
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});
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it('parses init segment', () => {
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new shaka.text.Mp4TtmlParser().parseInit(ttmlInitSegment);
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});
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it('parses media segment', () => {
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const parser = new shaka.text.Mp4TtmlParser();
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parser.parseInit(ttmlInitSegment);
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const time = {periodStart: 0, segmentStart: 0, segmentEnd: 0};
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const ret = parser.parseMedia(ttmlSegment, time);
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expect(ret.length).toBe(10);
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});
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it('handles media segments with multiple mdats', () => {
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const parser = new shaka.text.Mp4TtmlParser();
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parser.parseInit(ttmlInitSegment);
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const time = {periodStart: 0, segmentStart: 0, segmentEnd: 0};
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const ret = parser.parseMedia(ttmlSegmentMultipleMDAT, time);
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expect(ret.length).toBe(20);
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});
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it('accounts for offset', () => {
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const time1 = {periodStart: 0, segmentStart: 0, segmentEnd: 0};
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const time2 = {periodStart: 7, segmentStart: 0, segmentEnd: 0};
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const parser = new shaka.text.Mp4TtmlParser();
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parser.parseInit(ttmlInitSegment);
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const ret1 = parser.parseMedia(ttmlSegment, time1);
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expect(ret1.length).toBeGreaterThan(0);
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const ret2 = parser.parseMedia(ttmlSegment, time2);
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expect(ret2.length).toBeGreaterThan(0);
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expect(ret2[0].startTime).toBe(ret1[0].startTime + 7);
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expect(ret2[0].endTime).toBe(ret1[0].endTime + 7);
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});
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it('rejects init segment with no ttml', () => {
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const error = shaka.test.Util.jasmineError(new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.TEXT,
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shaka.util.Error.Code.INVALID_MP4_TTML));
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expect(() => new shaka.text.Mp4TtmlParser().parseInit(audioInitSegment))
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.toThrow(error);
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});
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it('can parse individual cues', () => {
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const parser = new shaka.text.Mp4TtmlParser();
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parser.parseInit(ttmlInitSegment);
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const time = {periodStart: 0, segmentStart: 0, segmentEnd: 0};
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let segment = ttmlSegment;
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if (parser.supportsPartial()) {
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segment = segment.subarray(0, 1150);
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}
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const ret = parser.parseFirstCue(segment, time);
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expect(ret.startTime).toBe(23);
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expect(ret.endTime).toBe(24.5);
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expect(ret.payload).toBe('You\'re a jerk, Thom.');
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});
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});
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