/
media_source_engine_unit.js
1201 lines (1042 loc) · 46.2 KB
/
media_source_engine_unit.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @typedef {{
* length: number,
* start: jasmine.Spy,
* end: jasmine.Spy
* }}
*/
let MockTimeRanges;
/**
* @typedef {{
* abort: jasmine.Spy,
* appendBuffer: jasmine.Spy,
* remove: jasmine.Spy,
* updating: boolean,
* addEventListener: jasmine.Spy,
* removeEventListener: jasmine.Spy,
* buffered: (MockTimeRanges|TimeRanges),
* timestampOffset: number,
* appendWindowEnd: number,
* updateend: function(),
* error: function()
* }}
*/
let MockSourceBuffer;
describe('MediaSourceEngine', () => {
const Util = shaka.test.Util;
const ContentType = shaka.util.ManifestParserUtils.ContentType;
const originalIsTypeSupported = window.MediaSource.isTypeSupported;
const originalTextEngine = shaka.text.TextEngine;
const originalCreateMediaSource =
// eslint-disable-next-line no-restricted-syntax
shaka.media.MediaSourceEngine.prototype.createMediaSource;
const originalTransmuxer = shaka.media.Transmuxer;
// Jasmine Spies don't handle toHaveBeenCalledWith well with objects, so use
// some numbers instead.
const buffer = /** @type {!ArrayBuffer} */ (/** @type {?} */ (1));
const buffer2 = /** @type {!ArrayBuffer} */ (/** @type {?} */ (2));
const buffer3 = /** @type {!ArrayBuffer} */ (/** @type {?} */ (3));
const fakeVideoStream = {mimeType: 'video/foo', drmInfos: []};
const fakeAudioStream = {mimeType: 'audio/foo', drmInfos: []};
const fakeTextStream = {mimeType: 'text/foo', drmInfos: []};
const fakeTransportStream = {mimeType: 'tsMimetype', drmInfos: []};
let audioSourceBuffer;
let videoSourceBuffer;
let mockVideo;
/** @type {HTMLMediaElement} */
let video;
let mockMediaSource;
let mockTextEngine;
/** @type {!shaka.test.FakeTextDisplayer} */
let mockTextDisplayer;
/** @type {!shaka.test.FakeClosedCaptionParser} */
let mockClosedCaptionParser;
/** @type {!shaka.test.FakeTransmuxer} */
let mockTransmuxer;
/** @type {!jasmine.Spy} */
let createMediaSourceSpy;
/** @type {!shaka.media.MediaSourceEngine} */
let mediaSourceEngine;
beforeAll(() => {
// Since this is not an integration test, we don't want MediaSourceEngine to
// fail assertions based on browser support for types. Pretend that all
// video and audio types are supported.
window.MediaSource.isTypeSupported = (mimeType) => {
const type = mimeType.split('/')[0];
return type == 'video' || type == 'audio';
};
});
afterAll(() => {
window.MediaSource.isTypeSupported = originalIsTypeSupported;
shaka.media.Transmuxer = originalTransmuxer;
});
beforeEach(/** @suppress {invalidCasts} */ () => {
audioSourceBuffer = createMockSourceBuffer();
videoSourceBuffer = createMockSourceBuffer();
mockMediaSource = createMockMediaSource();
mockMediaSource.addSourceBuffer.and.callFake((mimeType) => {
const type = mimeType.split('/')[0];
return type == 'audio' ? audioSourceBuffer : videoSourceBuffer;
});
mockTransmuxer = new shaka.test.FakeTransmuxer();
// eslint-disable-next-line no-restricted-syntax
shaka.media.Transmuxer = /** @type {?} */ (function() {
return /** @type {?} */ (mockTransmuxer);
});
shaka.media.Transmuxer.convertTsCodecs = originalTransmuxer.convertTsCodecs;
shaka.media.Transmuxer.isSupported = (mimeType, contentType) => {
return mimeType == 'tsMimetype';
};
shaka.text.TextEngine = createMockTextEngineCtor();
createMediaSourceSpy = jasmine.createSpy('createMediaSource');
createMediaSourceSpy.and.callFake((p) => {
p.resolve();
return mockMediaSource;
});
// eslint-disable-next-line no-restricted-syntax
shaka.media.MediaSourceEngine.prototype.createMediaSource =
Util.spyFunc(createMediaSourceSpy);
// MediaSourceEngine uses video to:
// - set src attribute
// - read error codes when operations fail
// - seek to flush the pipeline on some platforms
// - check buffered.length to assert that flushing the pipeline is okay
mockVideo = {
src: '',
error: null,
currentTime: 0,
buffered: {
length: 0,
},
removeAttribute: /** @this {HTMLVideoElement} */ (attr) => {
// Only called with attr == 'src'.
// This assertion alerts us if the requirements for this mock change.
goog.asserts.assert(attr == 'src', 'Unexpected removeAttribute() call');
mockVideo.src = '';
},
load: /** @this {HTMLVideoElement} */ () => {
// This assertion alerts us if the requirements for this mock change.
goog.asserts.assert(mockVideo.src == '', 'Unexpected load() call');
},
};
video = /** @type {HTMLMediaElement} */(mockVideo);
mockClosedCaptionParser = new shaka.test.FakeClosedCaptionParser();
mockTextDisplayer = new shaka.test.FakeTextDisplayer();
mediaSourceEngine = new shaka.media.MediaSourceEngine(
video,
mockClosedCaptionParser,
mockTextDisplayer);
});
afterEach(() => {
mockTextEngine = null;
shaka.text.TextEngine = originalTextEngine;
// eslint-disable-next-line no-restricted-syntax
shaka.media.MediaSourceEngine.prototype.createMediaSource =
originalCreateMediaSource;
});
describe('constructor', () => {
const originalCreateObjectURL =
shaka.media.MediaSourceEngine.createObjectURL;
const originalMediaSource = window.MediaSource;
/** @type {jasmine.Spy} */
let createObjectURLSpy;
beforeEach(async () => {
// Mock out MediaSource so we can test the production version of
// createMediaSource. To do this, the test must call the
// MediaSourceEngine constructor again. The call beforeEach was done with
// a mocked createMediaSource.
createMediaSourceSpy.calls.reset();
createMediaSourceSpy.and.callFake(originalCreateMediaSource);
createObjectURLSpy = jasmine.createSpy('createObjectURL');
createObjectURLSpy.and.returnValue('blob:foo');
shaka.media.MediaSourceEngine.createObjectURL =
Util.spyFunc(createObjectURLSpy);
const mediaSourceSpy = jasmine.createSpy('MediaSource');
// Because this is a fake constructor, it must be callable with "new".
// This will cause jasmine to invoke the callback with "new" as well, so
// the callback must be a "function". This detail is hidden when babel
// transpiles the tests.
// eslint-disable-next-line prefer-arrow-callback, no-restricted-syntax
mediaSourceSpy.and.callFake(function() {
return mockMediaSource;
});
window.MediaSource = Util.spyFunc(mediaSourceSpy);
await mediaSourceEngine.destroy();
});
afterAll(() => {
shaka.media.MediaSourceEngine.createObjectURL = originalCreateObjectURL;
window.MediaSource = originalMediaSource;
});
it('creates a MediaSource object and sets video.src', () => {
mediaSourceEngine = new shaka.media.MediaSourceEngine(
video,
new shaka.test.FakeClosedCaptionParser(),
new shaka.test.FakeTextDisplayer());
expect(createMediaSourceSpy).toHaveBeenCalled();
expect(createObjectURLSpy).toHaveBeenCalled();
expect(mockVideo.src).toBe('blob:foo');
});
});
describe('init', () => {
it('creates SourceBuffers for the given types', async () => {
const initObject = new Map();
initObject.set(ContentType.AUDIO, fakeAudioStream);
initObject.set(ContentType.VIDEO, fakeVideoStream);
await mediaSourceEngine.init(initObject, false);
expect(mockMediaSource.addSourceBuffer).toHaveBeenCalledWith('audio/foo');
expect(mockMediaSource.addSourceBuffer).toHaveBeenCalledWith('video/foo');
expect(shaka.text.TextEngine).not.toHaveBeenCalled();
});
it('creates TextEngines for text types', async () => {
const initObject = new Map();
initObject.set(ContentType.TEXT, fakeTextStream);
await mediaSourceEngine.init(initObject, false);
expect(mockMediaSource.addSourceBuffer).not.toHaveBeenCalled();
expect(shaka.text.TextEngine).toHaveBeenCalled();
});
});
describe('bufferStart and bufferEnd', () => {
beforeEach(async () => {
const initObject = new Map();
initObject.set(ContentType.AUDIO, fakeAudioStream);
initObject.set(ContentType.TEXT, fakeTextStream);
await mediaSourceEngine.init(initObject, false);
});
it('returns correct timestamps for one range', () => {
audioSourceBuffer.buffered = createFakeBuffered([{start: 0, end: 10}]);
expect(mediaSourceEngine.bufferStart(ContentType.AUDIO)).toBeCloseTo(0);
expect(mediaSourceEngine.bufferEnd(ContentType.AUDIO)).toBeCloseTo(10);
});
it('returns correct timestamps for multiple ranges', () => {
audioSourceBuffer.buffered =
createFakeBuffered([{start: 5, end: 10}, {start: 20, end: 30}]);
expect(mediaSourceEngine.bufferStart(ContentType.AUDIO)).toBeCloseTo(5);
expect(mediaSourceEngine.bufferEnd(ContentType.AUDIO)).toBeCloseTo(30);
});
it('returns null if there are no ranges', () => {
audioSourceBuffer.buffered = createFakeBuffered([]);
expect(mediaSourceEngine.bufferStart(ContentType.AUDIO)).toBeNull();
expect(mediaSourceEngine.bufferEnd(ContentType.AUDIO)).toBeNull();
});
it('will forward to TextEngine', () => {
mockTextEngine.bufferStart.and.returnValue(10);
mockTextEngine.bufferEnd.and.returnValue(20);
expect(mockTextEngine.bufferStart).not.toHaveBeenCalled();
expect(mediaSourceEngine.bufferStart(ContentType.TEXT)).toBe(10);
expect(mockTextEngine.bufferStart).toHaveBeenCalled();
expect(mockTextEngine.bufferEnd).not.toHaveBeenCalled();
expect(mediaSourceEngine.bufferEnd(ContentType.TEXT)).toBe(20);
expect(mockTextEngine.bufferEnd).toHaveBeenCalled();
});
});
describe('bufferedAheadOf', () => {
beforeEach(async () => {
const initObject = new Map();
initObject.set(ContentType.AUDIO, fakeAudioStream);
initObject.set(ContentType.TEXT, fakeTextStream);
await mediaSourceEngine.init(initObject, false);
});
it('returns the amount of data ahead of the given position', () => {
audioSourceBuffer.buffered = createFakeBuffered([{start: 0, end: 10}]);
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 0))
.toBeCloseTo(10);
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 5))
.toBeCloseTo(5);
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 9.9))
.toBeCloseTo(0.1);
});
it('returns zero when given an unbuffered time', () => {
audioSourceBuffer.buffered = createFakeBuffered([{start: 5, end: 10}]);
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 10))
.toBeCloseTo(0);
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 100))
.toBeCloseTo(0);
});
it('returns the correct amount with multiple ranges', () => {
audioSourceBuffer.buffered =
createFakeBuffered([{start: 1, end: 3}, {start: 6, end: 10}]);
// in range 0
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 1))
.toBeCloseTo(6);
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 2.5))
.toBeCloseTo(4.5);
// between range 0 and 1
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 5))
.toBeCloseTo(4);
// in range 1
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 6))
.toBeCloseTo(4);
expect(mediaSourceEngine.bufferedAheadOf(ContentType.AUDIO, 9.9))
.toBeCloseTo(0.1);
});
it('will forward to TextEngine', () => {
mockTextEngine.bufferedAheadOf.and.returnValue(10);
expect(mockTextEngine.bufferedAheadOf).not.toHaveBeenCalled();
expect(mediaSourceEngine.bufferedAheadOf(ContentType.TEXT, 5)).toBe(10);
expect(mockTextEngine.bufferedAheadOf).toHaveBeenCalledWith(5);
});
});
describe('appendBuffer', () => {
beforeEach(async () => {
captureEvents(audioSourceBuffer, ['updateend', 'error']);
captureEvents(videoSourceBuffer, ['updateend', 'error']);
const initObject = new Map();
initObject.set(ContentType.AUDIO, fakeAudioStream);
initObject.set(ContentType.VIDEO, fakeVideoStream);
initObject.set(ContentType.TEXT, fakeTextStream);
await mediaSourceEngine.init(initObject, false);
});
it('appends the given data', async () => {
const p = mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false);
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
audioSourceBuffer.updateend();
await p;
});
it('rejects promise when operation throws', async () => {
audioSourceBuffer.appendBuffer.and.throwError('fail!');
mockVideo.error = {code: 5};
const expected = Util.jasmineError(new shaka.util.Error(
shaka.util.Error.Severity.CRITICAL,
shaka.util.Error.Category.MEDIA,
shaka.util.Error.Code.MEDIA_SOURCE_OPERATION_THREW,
jasmine.objectContaining({message: 'fail!'})));
await expectAsync(
mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false))
.toBeRejectedWith(expected);
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
});
it('rejects promise when op. throws QuotaExceededError', async () => {
const fakeDOMException = {name: 'QuotaExceededError'};
audioSourceBuffer.appendBuffer.and.callFake(() => {
throw fakeDOMException;
});
mockVideo.error = {code: 5};
const expected = Util.jasmineError(new shaka.util.Error(
shaka.util.Error.Severity.CRITICAL,
shaka.util.Error.Category.MEDIA,
shaka.util.Error.Code.QUOTA_EXCEEDED_ERROR,
ContentType.AUDIO));
await expectAsync(
mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false))
.toBeRejectedWith(expected);
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
});
it('handles QuotaExceededError for pending operations', async () => {
const fakeDOMException = {name: 'QuotaExceededError'};
audioSourceBuffer.appendBuffer.and.callFake(() => {
if (audioSourceBuffer.appendBuffer.calls.count() > 1) {
throw fakeDOMException;
}
});
mockVideo.error = {code: 5};
const expected = Util.jasmineError(new shaka.util.Error(
shaka.util.Error.Severity.CRITICAL,
shaka.util.Error.Category.MEDIA,
shaka.util.Error.Code.QUOTA_EXCEEDED_ERROR,
ContentType.AUDIO));
const p1 = mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false);
const p2 = mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false);
audioSourceBuffer.updateend();
await expectAsync(p1).toBeResolved();
await expectAsync(p2).toBeRejectedWith(expected);
});
it('rejects the promise if this operation fails async', async () => {
mockVideo.error = {code: 5};
const p = mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false);
audioSourceBuffer.error();
audioSourceBuffer.updateend();
const expected = Util.jasmineError(new shaka.util.Error(
shaka.util.Error.Severity.CRITICAL,
shaka.util.Error.Category.MEDIA,
shaka.util.Error.Code.MEDIA_SOURCE_OPERATION_FAILED,
5));
await expectAsync(p).toBeRejectedWith(expected);
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
});
it('queues operations on a single SourceBuffer', async () => {
/** @type {!shaka.test.StatusPromise} */
const p1 = new shaka.test.StatusPromise(mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false));
/** @type {!shaka.test.StatusPromise} */
const p2 = new shaka.test.StatusPromise(mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer2, null, null,
/* hasClosedCaptions= */ false));
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
expect(audioSourceBuffer.appendBuffer).not.toHaveBeenCalledWith(buffer2);
expect(p1.status).toBe('pending');
expect(p2.status).toBe('pending');
audioSourceBuffer.updateend();
await p1;
expect(p2.status).toBe('pending');
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer2);
audioSourceBuffer.updateend();
await p2;
});
it('queues operations independently for different types', async () => {
/** @type {!shaka.test.StatusPromise} */
const p1 = new shaka.test.StatusPromise(mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false));
/** @type {!shaka.test.StatusPromise} */
const p2 = new shaka.test.StatusPromise(mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer2, null, null,
/* hasClosedCaptions= */ false));
/** @type {!shaka.test.StatusPromise} */
const p3 = new shaka.test.StatusPromise(mediaSourceEngine.appendBuffer(
ContentType.VIDEO, buffer3, null, null,
/* hasClosedCaptions= */ false));
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
expect(audioSourceBuffer.appendBuffer).not.toHaveBeenCalledWith(buffer2);
expect(videoSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer3);
expect(p1.status).toBe('pending');
expect(p2.status).toBe('pending');
expect(p3.status).toBe('pending');
audioSourceBuffer.updateend();
videoSourceBuffer.updateend();
// Wait a tick between each updateend() and the status check that follows.
await p1;
expect(p2.status).toBe('pending');
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer2);
await p3;
audioSourceBuffer.updateend();
await p2;
});
it('continues if an operation throws', async () => {
audioSourceBuffer.appendBuffer.and.callFake((value) => {
if (value == 2) {
// throw synchronously.
throw new Error();
} else {
// complete successfully asynchronously.
Promise.resolve().then(() => {
audioSourceBuffer.updateend();
});
}
});
const p1 = mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false);
const p2 = mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer2, null, null,
/* hasClosedCaptions= */ false);
const p3 = mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer3, null, null,
/* hasClosedCaptions= */ false);
await expectAsync(p1).toBeResolved();
await expectAsync(p2).toBeRejected();
await expectAsync(p3).toBeResolved();
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer2);
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer3);
});
it('forwards to TextEngine', async () => {
const data = new ArrayBuffer(0);
expect(mockTextEngine.appendBuffer).not.toHaveBeenCalled();
await mediaSourceEngine.appendBuffer(
ContentType.TEXT, data, 0, 10, /* hasClosedCaptions= */ false);
expect(mockTextEngine.appendBuffer).toHaveBeenCalledWith(
data, 0, 10);
});
it('appends transmuxed data and captions', async () => {
const initObject = new Map();
initObject.set(ContentType.VIDEO, fakeTransportStream);
const output = {
data: new Uint8Array(1),
captions: [{}],
};
mockTransmuxer.transmux.and.returnValue(Promise.resolve(output));
const init = async () => {
await mediaSourceEngine.init(initObject, false);
await mediaSourceEngine.appendBuffer(
ContentType.VIDEO, buffer, null, null,
/* hasClosedCaptions= */ false);
expect(mockTextEngine.storeAndAppendClosedCaptions).toHaveBeenCalled();
expect(videoSourceBuffer.appendBuffer).toHaveBeenCalled();
};
// The 'updateend' event fires once the data is done appending to the
// media source. We only append to the media source once transmuxing is
// done. Since transmuxing is done using Promises, we need to delay the
// event until MediaSourceEngine calls appendBuffer.
const delay = async () => {
await Util.shortDelay();
videoSourceBuffer.updateend();
};
await Promise.all([init(), delay()]);
});
it('appends only transmuxed data without embedded text', async () => {
const initObject = new Map();
initObject.set(ContentType.VIDEO, fakeTransportStream);
const output = {
data: new Uint8Array(1),
captions: [],
};
mockTransmuxer.transmux.and.returnValue(Promise.resolve(output));
const init = async () => {
await mediaSourceEngine.init(initObject, false);
await mediaSourceEngine.appendBuffer(
ContentType.VIDEO, buffer, null, null,
/* hasClosedCaptions= */ false);
expect(mockTextEngine.storeAndAppendClosedCaptions)
.not.toHaveBeenCalled();
expect(videoSourceBuffer.appendBuffer)
.toHaveBeenCalledWith(output.data);
};
// The 'updateend' event fires once the data is done appending to the
// media source. We only append to the media source once transmuxing is
// done. Since transmuxing is done using Promises, we need to delay the
// event until MediaSourceEngine calls appendBuffer.
const delay = async () => {
await Util.shortDelay();
videoSourceBuffer.updateend();
};
await Promise.all([init(), delay()]);
});
it('appends parsed closed captions from CaptionParser', async () => {
const initObject = new Map();
initObject.set(ContentType.VIDEO, fakeVideoStream);
mockClosedCaptionParser.parseFromSpy.and.callFake((data) => {
return ['foo', 'bar'];
});
await mediaSourceEngine.init(initObject, false);
// Initialize the closed caption parser.
const appendInit = mediaSourceEngine.appendBuffer(
ContentType.VIDEO, buffer, null, null, true);
// In MediaSourceEngine, appendBuffer() is async and Promise-based, but
// at the browser level, it's event-based.
// MediaSourceEngine waits for the 'updateend' event from the
// SourceBuffer, and uses that to resolve the appendBuffer Promise.
// Here, we must trigger the event on the fake/mock SourceBuffer before
// waiting on the appendBuffer Promise.
videoSourceBuffer.updateend();
await appendInit;
expect(mockTextEngine.storeAndAppendClosedCaptions).not
.toHaveBeenCalled();
// Parse and append the closed captions embedded in video stream.
const appendVideo = mediaSourceEngine.appendBuffer(
ContentType.VIDEO, buffer, 0, Infinity, true);
videoSourceBuffer.updateend();
await appendVideo;
expect(mockTextEngine.storeAndAppendClosedCaptions).toHaveBeenCalled();
});
});
describe('remove', () => {
beforeEach(async () => {
captureEvents(audioSourceBuffer, ['updateend', 'error']);
captureEvents(videoSourceBuffer, ['updateend', 'error']);
const initObject = new Map();
initObject.set(ContentType.AUDIO, fakeAudioStream);
initObject.set(ContentType.VIDEO, fakeVideoStream);
initObject.set(ContentType.TEXT, fakeTextStream);
await mediaSourceEngine.init(initObject, false);
});
it('removes the given data', async () => {
const p = mediaSourceEngine.remove(ContentType.AUDIO, 1, 5);
audioSourceBuffer.updateend();
await p;
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(1, 5);
});
it('rejects promise when operation throws', async () => {
audioSourceBuffer.remove.and.throwError('fail!');
mockVideo.error = {code: 5};
const expected = Util.jasmineError(new shaka.util.Error(
shaka.util.Error.Severity.CRITICAL,
shaka.util.Error.Category.MEDIA,
shaka.util.Error.Code.MEDIA_SOURCE_OPERATION_THREW,
jasmine.objectContaining({message: 'fail!'})));
await expectAsync(mediaSourceEngine.remove(ContentType.AUDIO, 1, 5))
.toBeRejectedWith(expected);
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(1, 5);
});
it('rejects the promise if this operation fails async', async () => {
mockVideo.error = {code: 5};
const p = mediaSourceEngine.remove(ContentType.AUDIO, 1, 5);
audioSourceBuffer.error();
audioSourceBuffer.updateend();
const expected = Util.jasmineError(new shaka.util.Error(
shaka.util.Error.Severity.CRITICAL,
shaka.util.Error.Category.MEDIA,
shaka.util.Error.Code.MEDIA_SOURCE_OPERATION_FAILED,
5));
await expectAsync(p).toBeRejectedWith(expected);
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(1, 5);
});
it('queues operations on a single SourceBuffer', async () => {
/** @type {!shaka.test.StatusPromise} */
const p1 = new shaka.test.StatusPromise(
mediaSourceEngine.remove(ContentType.AUDIO, 1, 5));
/** @type {!shaka.test.StatusPromise} */
const p2 = new shaka.test.StatusPromise(
mediaSourceEngine.remove(ContentType.AUDIO, 6, 10));
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(1, 5);
expect(audioSourceBuffer.remove).not.toHaveBeenCalledWith(6, 10);
expect(p1.status).toBe('pending');
expect(p2.status).toBe('pending');
audioSourceBuffer.updateend();
await p1;
expect(p2.status).toBe('pending');
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(6, 10);
audioSourceBuffer.updateend();
await p2;
});
it('queues operations independently for different types', async () => {
/** @type {!shaka.test.StatusPromise} */
const p1 = new shaka.test.StatusPromise(
mediaSourceEngine.remove(ContentType.AUDIO, 1, 5));
/** @type {!shaka.test.StatusPromise} */
const p2 = new shaka.test.StatusPromise(
mediaSourceEngine.remove(ContentType.AUDIO, 6, 10));
/** @type {!shaka.test.StatusPromise} */
const p3 = new shaka.test.StatusPromise(
mediaSourceEngine.remove(ContentType.VIDEO, 3, 8));
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(1, 5);
expect(audioSourceBuffer.remove).not.toHaveBeenCalledWith(6, 10);
expect(videoSourceBuffer.remove).toHaveBeenCalledWith(3, 8);
expect(p1.status).toBe('pending');
expect(p2.status).toBe('pending');
expect(p3.status).toBe('pending');
audioSourceBuffer.updateend();
videoSourceBuffer.updateend();
await p1;
expect(p2.status).toBe('pending');
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(6, 10);
await p3;
audioSourceBuffer.updateend();
await p2;
});
it('continues if an operation throws', async () => {
audioSourceBuffer.remove.and.callFake((start, end) => {
if (start == 2) {
// throw synchronously.
throw new Error();
} else {
// complete successfully asynchronously.
Promise.resolve().then(() => {
audioSourceBuffer.updateend();
});
}
});
const p1 = mediaSourceEngine.remove(ContentType.AUDIO, 1, 2);
const p2 = mediaSourceEngine.remove(ContentType.AUDIO, 2, 3);
const p3 = mediaSourceEngine.remove(ContentType.AUDIO, 3, 4);
await expectAsync(p1).toBeResolved();
await expectAsync(p2).toBeRejected();
await expectAsync(p3).toBeResolved();
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(1, 2);
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(2, 3);
expect(audioSourceBuffer.remove).toHaveBeenCalledWith(3, 4);
});
it('will forward to TextEngine', async () => {
expect(mockTextEngine.remove).not.toHaveBeenCalled();
await mediaSourceEngine.remove(ContentType.TEXT, 10, 20);
expect(mockTextEngine.remove).toHaveBeenCalledWith(10, 20);
});
});
describe('clear', () => {
beforeEach(async () => {
captureEvents(audioSourceBuffer, ['updateend', 'error']);
captureEvents(videoSourceBuffer, ['updateend', 'error']);
const initObject = new Map();
initObject.set(ContentType.AUDIO, fakeAudioStream);
initObject.set(ContentType.VIDEO, fakeVideoStream);
initObject.set(ContentType.TEXT, fakeTextStream);
await mediaSourceEngine.init(initObject, false);
});
it('clears the given data', async () => {
mockMediaSource.durationGetter.and.returnValue(20);
const p = mediaSourceEngine.clear(ContentType.AUDIO);
audioSourceBuffer.updateend();
await p;
expect(audioSourceBuffer.remove).toHaveBeenCalledTimes(1);
expect(audioSourceBuffer.remove.calls.argsFor(0)[0]).toBe(0);
expect(audioSourceBuffer.remove.calls.argsFor(0)[1] >= 20).toBeTruthy();
});
it('does not seek', async () => {
// We had a bug in which we got into a seek loop. Seeking caused
// StreamingEngine to call clear(). Clearing triggered a pipeline flush
// which was implemented by seeking. See issue #569.
// This loop is difficult to test for directly.
// A unit test on StreamingEngine would not suffice, since reproduction of
// the bug would involve making the mock MediaSourceEngine seek on clear.
// Since the fix was to remove the implicit seek, this behavior would then
// be removed from the mock, which would render the test useless.
// An integration test involving both StreamingEngine and MediaSourcEngine
// would also be problematic. The bug involved a race, so it would be
// difficult to reproduce the necessary timing. And if we succeeded, it
// would be tough to detect that we were definitely in a seek loop, since
// nothing was mocked.
// So the best option seems to be to enforce that clear() does not result
// in a seek. This can be done here, in a unit test on MediaSourceEngine.
// It does not reproduce the seek loop, but it does ensure that the test
// would fail if we ever reintroduced this behavior.
const originalTime = 10;
mockVideo.currentTime = originalTime;
mockMediaSource.durationGetter.and.returnValue(20);
const p = mediaSourceEngine.clear(ContentType.AUDIO);
audioSourceBuffer.updateend();
await p;
expect(mockVideo.currentTime).toBe(originalTime);
});
it('will forward to TextEngine', async () => {
expect(mockTextEngine.setTimestampOffset).not.toHaveBeenCalled();
expect(mockTextEngine.setAppendWindow).not.toHaveBeenCalled();
await mediaSourceEngine.setStreamProperties(ContentType.TEXT,
/* timestampOffset= */ 10,
/* appendWindowStart= */ 0,
/* appendWindowEnd= */ 20,
/* sequenceMode= */ false);
expect(mockTextEngine.setTimestampOffset).toHaveBeenCalledWith(10);
expect(mockTextEngine.setAppendWindow).toHaveBeenCalledWith(0, 20);
});
});
describe('endOfStream', () => {
beforeEach(async () => {
captureEvents(audioSourceBuffer, ['updateend', 'error']);
captureEvents(videoSourceBuffer, ['updateend', 'error']);
const initObject = new Map();
initObject.set(ContentType.AUDIO, fakeAudioStream);
initObject.set(ContentType.VIDEO, fakeVideoStream);
await mediaSourceEngine.init(initObject, false);
});
it('ends the MediaSource stream with the given reason', async () => {
await mediaSourceEngine.endOfStream('foo');
expect(mockMediaSource.endOfStream).toHaveBeenCalledWith('foo');
});
it('waits for all previous operations to complete', async () => {
/** @type {!shaka.test.StatusPromise} */
const p1 = new shaka.test.StatusPromise(mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false));
/** @type {!shaka.test.StatusPromise} */
const p2 = new shaka.test.StatusPromise(mediaSourceEngine.appendBuffer(
ContentType.VIDEO, buffer, null, null,
/* hasClosedCaptions= */ false));
/** @type {!shaka.test.StatusPromise} */
const p3 = new shaka.test.StatusPromise(mediaSourceEngine.endOfStream());
expect(mockMediaSource.endOfStream).not.toHaveBeenCalled();
expect(p1.status).toBe('pending');
expect(p2.status).toBe('pending');
expect(p3.status).toBe('pending');
audioSourceBuffer.updateend();
await p1;
expect(p2.status).toBe('pending');
expect(p3.status).toBe('pending');
videoSourceBuffer.updateend();
await p2;
await p3;
expect(mockMediaSource.endOfStream).toHaveBeenCalled();
});
it('makes subsequent operations wait', async () => {
/** @type {!Promise} */
const p1 = mediaSourceEngine.endOfStream();
mediaSourceEngine.appendBuffer(ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false);
mediaSourceEngine.appendBuffer(ContentType.VIDEO, buffer, null, null,
/* hasClosedCaptions= */ false);
mediaSourceEngine.appendBuffer(ContentType.VIDEO, buffer2, null, null,
/* hasClosedCaptions= */ false);
// endOfStream hasn't been called yet because blocking multiple queues
// takes an extra tick, even when they are empty.
expect(mockMediaSource.endOfStream).not.toHaveBeenCalled();
expect(audioSourceBuffer.appendBuffer).not.toHaveBeenCalled();
expect(videoSourceBuffer.appendBuffer).not.toHaveBeenCalled();
await p1;
expect(mockMediaSource.endOfStream).toHaveBeenCalled();
// The next operations have already been kicked off.
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
expect(videoSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
// This one is still in queue.
expect(videoSourceBuffer.appendBuffer).not.toHaveBeenCalledWith(buffer2);
audioSourceBuffer.updateend();
videoSourceBuffer.updateend();
await Promise.resolve();
expect(videoSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer2);
videoSourceBuffer.updateend();
});
it('runs subsequent operations if this operation throws', async () => {
mockMediaSource.endOfStream.and.throwError(new Error());
/** @type {!Promise} */
const p1 = mediaSourceEngine.endOfStream();
mediaSourceEngine.appendBuffer(ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false);
expect(audioSourceBuffer.appendBuffer).not.toHaveBeenCalled();
await expectAsync(p1).toBeRejected();
expect(mockMediaSource.endOfStream).toHaveBeenCalled();
await Util.shortDelay();
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(1);
audioSourceBuffer.updateend();
});
});
describe('setDuration', () => {
beforeEach(async () => {
mockMediaSource.durationGetter.and.returnValue(0);
captureEvents(audioSourceBuffer, ['updateend', 'error']);
captureEvents(videoSourceBuffer, ['updateend', 'error']);
const initObject = new Map();
initObject.set(ContentType.AUDIO, fakeAudioStream);
initObject.set(ContentType.VIDEO, fakeVideoStream);
await mediaSourceEngine.init(initObject, false);
});
it('sets the given duration', async () => {
await mediaSourceEngine.setDuration(100);
expect(mockMediaSource.durationSetter).toHaveBeenCalledWith(100);
});
it('waits for all previous operations to complete', async () => {
/** @type {!shaka.test.StatusPromise} */
const p1 = new shaka.test.StatusPromise(mediaSourceEngine.appendBuffer(
ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false));
/** @type {!shaka.test.StatusPromise} */
const p2 = new shaka.test.StatusPromise(mediaSourceEngine.appendBuffer(
ContentType.VIDEO, buffer, null, null,
/* hasClosedCaptions= */ false));
/** @type {!shaka.test.StatusPromise} */
const p3 =
new shaka.test.StatusPromise(mediaSourceEngine.setDuration(100));
expect(mockMediaSource.durationSetter).not.toHaveBeenCalled();
expect(p1.status).toBe('pending');
expect(p2.status).toBe('pending');
expect(p3.status).toBe('pending');
audioSourceBuffer.updateend();
await p1;
expect(p2.status).toBe('pending');
expect(p3.status).toBe('pending');
videoSourceBuffer.updateend();
await p2;
await p3;
expect(mockMediaSource.durationSetter).toHaveBeenCalledWith(100);
});
it('makes subsequent operations wait', async () => {
/** @type {!Promise} */
const p1 = mediaSourceEngine.setDuration(100);
mediaSourceEngine.appendBuffer(ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false);
mediaSourceEngine.appendBuffer(ContentType.VIDEO, buffer, null, null,
/* hasClosedCaptions= */ false);
mediaSourceEngine.appendBuffer(ContentType.VIDEO, buffer2, null, null,
/* hasClosedCaptions= */ false);
// The setter hasn't been called yet because blocking multiple queues
// takes an extra tick, even when they are empty.
expect(mockMediaSource.durationSetter).not.toHaveBeenCalled();
expect(audioSourceBuffer.appendBuffer).not.toHaveBeenCalled();
expect(videoSourceBuffer.appendBuffer).not.toHaveBeenCalled();
await p1;
expect(mockMediaSource.durationSetter).toHaveBeenCalled();
// The next operations have already been kicked off.
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
expect(videoSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);
// This one is still in queue.
expect(videoSourceBuffer.appendBuffer)
.not.toHaveBeenCalledWith(buffer2);
audioSourceBuffer.updateend();
videoSourceBuffer.updateend();
await Promise.resolve();
expect(videoSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer2);
videoSourceBuffer.updateend();
});
it('runs subsequent operations if this operation throws', async () => {
mockMediaSource.durationSetter.and.throwError(new Error());
/** @type {!Promise} */
const p1 = mediaSourceEngine.setDuration(100);
mediaSourceEngine.appendBuffer(ContentType.AUDIO, buffer, null, null,
/* hasClosedCaptions= */ false);
expect(audioSourceBuffer.appendBuffer).not.toHaveBeenCalled();
await expectAsync(p1).toBeRejected();
expect(mockMediaSource.durationSetter).toHaveBeenCalled();
await Util.shortDelay();
expect(audioSourceBuffer.appendBuffer).toHaveBeenCalledWith(buffer);