mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-26 17:46:26 +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
641 lines
20 KiB
JavaScript
641 lines
20 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('VttTextParser', () => {
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const Cue = shaka.text.Cue;
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const CueRegion = shaka.text.CueRegion;
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const originalLogWarning = shaka.log.warning;
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/** @type {!jasmine.Spy} */
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let logWarningSpy;
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beforeEach(() => {
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logWarningSpy = jasmine.createSpy('shaka.log.warning');
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shaka.log.warning = shaka.test.Util.spyFunc(logWarningSpy);
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});
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afterEach(() => {
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shaka.log.warning = originalLogWarning;
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});
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it('supports no cues', () => {
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verifyHelper([],
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'WEBVTT',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports initial comments', () => {
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verifyHelper([],
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'WEBVTT - Comments',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports comment blocks', () => {
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verifyHelper([],
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'WEBVTT\n\n' +
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'NOTE\n' +
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'This is a comment block',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports comment blocks with inital comment', () => {
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verifyHelper([],
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'WEBVTT\n\n' +
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'NOTE - A header comment\n' +
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'This is a comment block',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('handles a blank line at the end of the file', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test'},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000\n' +
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'Test\n\n',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('handles no blank line at the end of the file', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test'},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000\n' +
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'Test\n',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0,
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});
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});
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it('handles no newline after the final text payload', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test'},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('ignores offset', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test'},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports cues with no settings', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test', id: '1'},
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{startTime: 40, endTime: 50, payload: 'Test2', id: '2'},
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],
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'WEBVTT\n\n' +
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'1\n' +
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'00:00:20.000 --> 00:00:40.000\n' +
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'Test\n\n' +
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'2\n' +
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'00:00:40.000 --> 00:00:50.000\n' +
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'Test2',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports cues with no ID', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test'},
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{startTime: 40, endTime: 50, payload: 'Test2'},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000\n' +
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'Test\n\n' +
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'00:00:40.000 --> 00:00:50.000\n' +
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'Test2',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports comments within cues', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test'},
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{startTime: 40, endTime: 50, payload: 'Test2'},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000\n' +
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'Test\n\n' +
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'NOTE\n' +
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'This is a note\n\n' +
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'00:00:40.000 --> 00:00:50.000\n' +
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'Test2',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports non-integer timecodes', () => {
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verifyHelper(
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[
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{startTime: 20.1, endTime: 40.505, payload: 'Test'},
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],
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'WEBVTT\n\n' +
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'00:00:20.100 --> 00:00:40.505\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports large timecodes', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 108000, payload: 'Test'},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 30:00:00.000\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('requires header', () => {
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_HEADER,
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'',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_HEADER,
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'00:00:00.000 --> 00:00:00.020\nTest',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('rejects invalid time values', () => {
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_CUE,
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'WEBVTT\n\n00.020 --> 0:00.040\nTest',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_CUE,
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'WEBVTT\n\n0:00.020 --> 0:00.040\nTest',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_CUE,
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'WEBVTT\n\n00:00.20 --> 0:00.040\nTest',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_CUE,
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'WEBVTT\n\n00:100.20 --> 0:00.040\nTest',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_CUE,
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'WEBVTT\n\n00:00.020 --> 0:00.040\nTest',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_CUE,
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'WEBVTT\n\n00:00:00:00.020 --> 0:00.040\nTest',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_CUE,
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'WEBVTT\n\n00:61.020 --> 0:00.040\nTest',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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errorHelper(shaka.util.Error.Code.INVALID_TEXT_CUE,
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'WEBVTT\n\n61:00.020 --> 0:00.040\nTest',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports vertical setting', () => {
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verifyHelper(
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[
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{
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startTime: 20,
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endTime: 40,
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payload: 'Test',
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writingMode: Cue.writingMode.VERTICAL_RIGHT_TO_LEFT,
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},
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{
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startTime: 40,
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endTime: 50,
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payload: 'Test2',
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writingMode: Cue.writingMode.VERTICAL_LEFT_TO_RIGHT,
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},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000 vertical:rl\n' +
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'Test\n\n' +
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'00:00:40.000 --> 00:00:50.000 vertical:lr\n' +
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'Test2',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports line setting', () => {
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verifyHelper(
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[
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{
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startTime: 20, endTime: 40, payload: 'Test', line: 0,
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lineInterpretation: Cue.lineInterpretation.LINE_NUMBER,
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},
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{
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startTime: 40, endTime: 50, payload: 'Test2', line: -1,
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lineInterpretation: Cue.lineInterpretation.LINE_NUMBER,
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},
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{
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startTime: 50, endTime: 60, payload: 'Test3', line: 45,
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lineInterpretation: Cue.lineInterpretation.PERCENTAGE,
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},
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{
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startTime: 55, endTime: 65, payload: 'Test4', line: 12.3,
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lineInterpretation: Cue.lineInterpretation.PERCENTAGE,
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},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000 line:0\n' +
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'Test\n\n' +
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'00:00:40.000 --> 00:00:50.000 line:-1\n' +
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'Test2\n\n' +
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'00:00:50.000 --> 00:01:00.000 line:45%\n' +
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'Test3\n\n' +
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'00:00:55.000 --> 00:01:05.000 line:12.3%\n' +
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'Test4\n\n',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports line setting with optional part', () => {
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verifyHelper(
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[
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{
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startTime: 20, endTime: 40, payload: 'Test', line: 10,
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lineInterpretation: Cue.lineInterpretation.PERCENTAGE,
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lineAlign: Cue.lineAlign.START,
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},
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{
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startTime: 40, endTime: 50, payload: 'Test2', line: -1,
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lineInterpretation: Cue.lineInterpretation.LINE_NUMBER,
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lineAlign: Cue.lineAlign.CENTER,
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},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000 line:10%,start\n' +
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'Test\n\n' +
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'00:00:40.000 --> 00:00:50.000 line:-1,center\n' +
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'Test2',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports position setting', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test', position: 45},
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{startTime: 25, endTime: 45, payload: 'Test2', position: 12.3},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000 position:45%\n' +
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'Test\n\n' +
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'00:00:25.000 --> 00:00:45.000 position:12.3%\n' +
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'Test2\n\n',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports position setting with optional part', () => {
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verifyHelper(
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[
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{
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startTime: 20, endTime: 40, payload: 'Test', position: 45,
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positionAlign: Cue.positionAlign.LEFT,
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},
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{
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startTime: 20, endTime: 40, payload: 'Test2', position: 45,
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positionAlign: Cue.positionAlign.LEFT,
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},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000 position:45%,line-left\n' +
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'Test\n\n' +
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'00:00:20.000 --> 00:00:40.000 position:45%,start\n' +
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'Test2',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports size setting', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test', size: 56},
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{startTime: 25, endTime: 45, payload: 'Test2', size: 12.3},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000 size:56%\n' +
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'Test\n\n' +
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'00:00:25.000 --> 00:00:45.000 size:12.3%\n' +
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'Test2\n\n',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports align setting', () => {
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test', textAlign: 'center'},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000 align:center\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports multiple settings', () => {
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verifyHelper(
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[
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{
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startTime: 20,
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endTime: 40,
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payload: 'Test',
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textAlign: Cue.textAlign.CENTER,
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size: 56,
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writingMode: Cue.writingMode.VERTICAL_LEFT_TO_RIGHT,
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},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 00:00:40.000 align:center size:56% vertical:lr\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports timestamps with one-digit hour at start time', () => {
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verifyHelper(
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[
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{
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startTime: 20,
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endTime: 40,
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payload: 'Test',
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textAlign: Cue.textAlign.CENTER,
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size: 56,
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writingMode: Cue.writingMode.VERTICAL_LEFT_TO_RIGHT,
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},
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],
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'WEBVTT\n\n' +
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'0:00:20.000 --> 00:00:40.000 align:center size:56% vertical:lr\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports timestamps with one-digit hour at end time', () => {
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verifyHelper(
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[
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{
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startTime: 20,
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endTime: 40,
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payload: 'Test',
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textAlign: Cue.textAlign.CENTER,
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size: 56,
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writingMode: Cue.writingMode.VERTICAL_LEFT_TO_RIGHT,
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},
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],
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'WEBVTT\n\n' +
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'00:00:20.000 --> 0:00:40.000 align:center size:56% vertical:lr\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('supports stamps with one-digit hours at start & end time', () => {
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verifyHelper(
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[
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{
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startTime: 20,
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endTime: 40,
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payload: 'Test',
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textAlign: 'center',
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size: 56,
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writingMode: Cue.writingMode.VERTICAL_LEFT_TO_RIGHT,
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},
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],
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'WEBVTT\n\n' +
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'0:00:20.000 --> 0:00:40.000 align:center size:56% vertical:lr\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('uses segment time', () => {
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verifyHelper(
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[
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{
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startTime: 40, // Note these are 20s off of the cue
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endTime: 60, // because using relative timestamps
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payload: 'Test',
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textAlign: 'center',
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size: 56,
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writingMode: Cue.writingMode.VERTICAL_LEFT_TO_RIGHT,
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},
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],
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'WEBVTT\n\n' +
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'0:00:20.000 --> 0:00:40.000 align:center size:56% vertical:lr\n' +
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'Test',
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{periodStart: 0, segmentStart: 20, segmentEnd: 0});
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});
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it('parses VTTRegions', () => {
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verifyHelper(
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[
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{
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startTime: 20,
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endTime: 40,
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payload: 'Test',
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region: jasmine.objectContaining({
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id: 'reg1',
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viewportAnchorX: 10,
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viewportAnchorY: 90,
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regionAnchorX: 0,
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regionAnchorY: 100,
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width: 50,
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height: 3,
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heightUnits: CueRegion.units.LINES,
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widthUnits: CueRegion.units.PERCENTAGE,
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viewportAnchorUnits: CueRegion.units.PERCENTAGE,
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scroll: CueRegion.scrollMode.UP,
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}),
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},
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],
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'WEBVTT\n' +
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'Region: id=reg1 width=50% lines=3 regionanchor=0%,100% ' +
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'viewportanchor=10%,90% scroll=up\n\n' +
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'0:00:20.000 --> 0:00:40.000 region:reg1\n' +
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'Test',
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{periodStart: 0, segmentStart: 0, segmentEnd: 0});
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});
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it('ignores and logs invalid settings', () => {
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expect(logWarningSpy).not.toHaveBeenCalled();
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verifyHelper(
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[
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{startTime: 20, endTime: 40, payload: 'Test'},
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],
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'WEBVTT\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000 vertical:es\n' +
|
|
'Test\n\n',
|
|
{periodStart: 0, segmentStart: 0, segmentEnd: 0});
|
|
|
|
verifyHelper(
|
|
[
|
|
{startTime: 20, endTime: 40, payload: 'Test'},
|
|
],
|
|
'WEBVTT\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000 vertical:\n' +
|
|
'Test\n\n',
|
|
{periodStart: 0, segmentStart: 0, segmentEnd: 0});
|
|
|
|
verifyHelper(
|
|
[
|
|
{startTime: 20, endTime: 40, payload: 'Test'},
|
|
],
|
|
'WEBVTT\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000 vertical\n' +
|
|
'Test\n\n',
|
|
{periodStart: 0, segmentStart: 0, segmentEnd: 0});
|
|
|
|
verifyHelper(
|
|
[
|
|
{startTime: 20, endTime: 40, payload: 'Test'},
|
|
],
|
|
'WEBVTT\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000 line:-3%\n' +
|
|
'Test\n\n',
|
|
{periodStart: 0, segmentStart: 0, segmentEnd: 0});
|
|
|
|
verifyHelper(
|
|
[
|
|
{startTime: 20, endTime: 40, payload: 'Test'},
|
|
],
|
|
'WEBVTT\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000 line:45%%\n' +
|
|
'Test\n\n',
|
|
{periodStart: 0, segmentStart: 0, segmentEnd: 0});
|
|
|
|
verifyHelper(
|
|
[
|
|
{startTime: 20, endTime: 40, payload: 'Test'},
|
|
],
|
|
'WEBVTT\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000 align:10\n' +
|
|
'Test\n\n',
|
|
{periodStart: 0, segmentStart: 0, segmentEnd: 0});
|
|
|
|
verifyHelper(
|
|
[
|
|
{startTime: 20, endTime: 40, payload: 'Test'},
|
|
],
|
|
'WEBVTT\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000 align:foo\n' +
|
|
'Test\n\n',
|
|
{periodStart: 0, segmentStart: 0, segmentEnd: 0});
|
|
|
|
expect(logWarningSpy).toHaveBeenCalledTimes(7);
|
|
});
|
|
|
|
it('respects X-TIMESTAMP-MAP header in probes', () => {
|
|
verifyHelper(
|
|
[
|
|
{startTime: 30, endTime: 50, payload: 'Test'},
|
|
{startTime: 50, endTime: 60, payload: 'Test2'},
|
|
],
|
|
// 900000 = 10 sec, so expect every timestamp to be 10
|
|
// seconds ahead of what is specified.
|
|
'WEBVTT\n' +
|
|
'X-TIMESTAMP-MAP=MPEGTS:900000,LOCAL:00:00:00.000\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000 line:0\n' +
|
|
'Test\n\n' +
|
|
'00:00:40.000 --> 00:00:50.000 line:-1\n' +
|
|
'Test2',
|
|
// segmentStart of null marks this as a probe.
|
|
{periodStart: 0, segmentStart: null, segmentEnd: 0});
|
|
});
|
|
|
|
it('ignores X-TIMESTAMP-MAP header when segment times are known', () => {
|
|
verifyHelper(
|
|
[
|
|
{startTime: 120, endTime: 140, payload: 'Test'},
|
|
{startTime: 140, endTime: 150, payload: 'Test2'},
|
|
],
|
|
// 900000 = 10 sec, so expect every timestamp to be 10
|
|
// seconds ahead of what is specified.
|
|
'WEBVTT\n' +
|
|
'X-TIMESTAMP-MAP=MPEGTS:900000,LOCAL:00:00:00.000\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000 line:0\n' +
|
|
'Test\n\n' +
|
|
'00:00:40.000 --> 00:00:50.000 line:-1\n' +
|
|
'Test2',
|
|
// Non-null segmentStart takes precedence over X-TIMESTAMP-MAP.
|
|
// This protects us from rollover in the MPEGTS field.
|
|
{periodStart: 0, segmentStart: 100, segmentEnd: 0});
|
|
});
|
|
|
|
it('skips style blocks', () => {
|
|
verifyHelper(
|
|
[
|
|
{startTime: 20, endTime: 40, payload: 'Test'},
|
|
{startTime: 40, endTime: 50, payload: 'Test2'},
|
|
],
|
|
'WEBVTT\n\n' +
|
|
'STYLE\n::cue(.cyan) { color: cyan; }\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000\n' +
|
|
'Test\n\n' +
|
|
'00:00:40.000 --> 00:00:50.000\n' +
|
|
'Test2',
|
|
{periodStart: 0, segmentStart: 0, segmentEnd: 0});
|
|
});
|
|
|
|
it('can parse individual cues', () => {
|
|
const parser = new shaka.text.VttTextParser();
|
|
let text = '';
|
|
if (parser.supportsPartial()) {
|
|
text = 'WEBVTT\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000\n' +
|
|
'Test\n\n' +
|
|
'00:00:40.000 -';
|
|
} else {
|
|
text = 'WEBVTT\n\n' +
|
|
'00:00:20.000 --> 00:00:40.000\n' +
|
|
'Test\n\n' +
|
|
'00:00:40.000 --> 00:00:50.000\n' +
|
|
'Test2';
|
|
}
|
|
const data = new Uint8Array(shaka.util.StringUtils.toUTF8(text));
|
|
const time = {periodStart: 0, segmentStart: 0, segmentEnd: 0};
|
|
const cue = parser.parseFirstCue(data, time);
|
|
expect(cue.startTime).toBe(20);
|
|
expect(cue.endTime).toBe(40);
|
|
expect(cue.payload).toBe('Test');
|
|
});
|
|
|
|
|
|
/**
|
|
* @param {!Array} cues
|
|
* @param {string} text
|
|
* @param {shaka.extern.TextParser.TimeContext} time
|
|
*/
|
|
function verifyHelper(cues, text, time) {
|
|
const data = new Uint8Array(shaka.util.StringUtils.toUTF8(text));
|
|
|
|
const result = new shaka.text.VttTextParser().parseMedia(data, time);
|
|
expect(result).toEqual(cues.map((c) => jasmine.objectContaining(c)));
|
|
}
|
|
|
|
/**
|
|
* @param {shaka.util.Error.Code} code
|
|
* @param {string} text
|
|
* @param {shaka.extern.TextParser.TimeContext} time
|
|
*/
|
|
function errorHelper(code, text, time) {
|
|
const error = shaka.test.Util.jasmineError(new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL, shaka.util.Error.Category.TEXT,
|
|
code));
|
|
const data = new Uint8Array(shaka.util.StringUtils.toUTF8(text));
|
|
expect(() => new shaka.text.VttTextParser().parseMedia(data, time))
|
|
.toThrow(error);
|
|
}
|
|
});
|