mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-16 16:16:40 +03:00
Theodore Abshire
3af3a2caec
Beforehand, if we were parsing a ttml subtitles stored in an mp4, we did not account for the possibility that there would be multiple mdat boxes, each with its own ttml data. In such a case, we would only use the payload from the final mdat. I don't know if having multiple mdat like that is really in the spec, but at least one user has had this problem, and it's a straightforward change to make that doesn't really slow down the text parser at all (since we parse every mdat anyway). Closes #1028 Change-Id: Id782695548cb92f7aa7278843695b670d8c15ff0
97 lines
3.2 KiB
JavaScript
97 lines
3.2 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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goog.require('shaka.test.Util');
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describe('Mp4TtmlParser', function() {
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var ttmlInitSegmentUri = '/base/test/test/assets/ttml-init.mp4';
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var ttmlSegmentUri = '/base/test/test/assets/ttml-segment.mp4';
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var ttmlSegmentMultipleMDATUri =
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'/base/test/test/assets/ttml-segment-multiplemdat.mp4';
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var audioInitSegmentUri = '/base/test/test/assets/sintel-audio-init.mp4';
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var ttmlInitSegment;
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var ttmlSegment;
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var ttmlSegmentMultipleMDAT;
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var audioInitSegment;
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beforeAll(function(done) {
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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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]).then(function(responses) {
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ttmlInitSegment = responses[0];
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ttmlSegment = responses[1];
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ttmlSegmentMultipleMDAT = responses[2];
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audioInitSegment = responses[3];
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}).catch(fail).then(done);
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});
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it('parses init segment', function() {
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new shaka.text.Mp4TtmlParser().parseInit(ttmlInitSegment);
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});
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it('parses media segment', function() {
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var parser = new shaka.text.Mp4TtmlParser();
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parser.parseInit(ttmlInitSegment);
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var time = {periodStart: 0, segmentStart: 0, segmentEnd: 0 };
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var 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', function() {
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var parser = new shaka.text.Mp4TtmlParser();
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parser.parseInit(ttmlInitSegment);
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var time = {periodStart: 0, segmentStart: 0, segmentEnd: 0 };
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var 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', function() {
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var time1 = {periodStart: 0, segmentStart: 0, segmentEnd: 0 };
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var time2 = {periodStart: 7, segmentStart: 0, segmentEnd: 0 };
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var parser = new shaka.text.Mp4TtmlParser();
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parser.parseInit(ttmlInitSegment);
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var ret1 = parser.parseMedia(ttmlSegment, time1);
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expect(ret1.length).toBeGreaterThan(0);
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var ret2 = parser.parseMedia(ttmlSegment, time2);
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expect(ret2.length).toBeGreaterThan(0);
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expect(ret2[0].startTime).toEqual(ret1[0].startTime + 7);
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expect(ret2[0].endTime).toEqual(ret1[0].endTime + 7);
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});
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it('rejects init segment with no ttml', function() {
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var error = 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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try {
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new shaka.text.Mp4TtmlParser().parseInit(audioInitSegment);
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fail('Mp4 file with no ttml supported');
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} catch (e) {
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shaka.test.Util.expectToEqualError(e, error);
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}
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});
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});
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