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
|
<!doctype html>
<meta charset=utf-8>
<title>RTCPeerConnection Simulcast Tests - setParameters/encodings</title>
<meta name="timeout" content="long">
<script src="../third_party/sdp/sdp.js"></script>
<script src="simulcast.js"></script>
<script src="../RTCPeerConnection-helper.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="../../mediacapture-streams/permission-helper.js"></script>
<script>
async function queueAWebrtcTask() {
const pc = new RTCPeerConnection();
pc.addTransceiver('audio');
await new Promise(r => pc.onnegotiationneeded = r);
}
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const {sender} = pc1.addTransceiver("video", {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcast(pc1, pc2);
await pc2.setLocalDescription();
const simulcastAnswer = midToRid(pc2.localDescription, pc1.localDescription, ["foo"]);
const parameters = sender.getParameters();
parameters.encodings[1].scaleResolutionDownBy = 3.3;
const answerDone = pc1.setRemoteDescription({type: "answer", sdp: simulcastAnswer});
await sender.setParameters(parameters);
await answerDone;
assert_equals(pc1.getTransceivers().length, 1);
const {encodings} = sender.getParameters();
const rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo"]);
}, 'sRD(simulcast answer) can narrow the simulcast envelope when interrupted by a setParameters');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const {sender} = pc1.addTransceiver("video", {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcastAndAnswer(pc1, pc2, ["foo", "bar"]);
assert_equals(pc1.getTransceivers().length, 1);
let encodings = sender.getParameters().encodings;
let rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo", "bar"]);
const reoffer = await pc2.createOffer();
const simulcastSdp = midToRid(reoffer, pc1.localDescription, ["foo"]);
const parameters = sender.getParameters();
parameters.encodings[1].scaleResolutionDownBy = 3.3;
const reofferDone = pc1.setRemoteDescription({type: "offer", sdp: simulcastSdp});
await sender.setParameters(parameters);
await reofferDone;
await pc1.setLocalDescription();
encodings = sender.getParameters().encodings;
rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo"]);
}, 'sRD(simulcast offer) can narrow the simulcast envelope when interrupted by a setParameters');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const {sender} = pc1.addTransceiver("video", {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
const parameters = sender.getParameters();
parameters.encodings[0].scaleResolutionDownBy = 2.3;
parameters.encodings[1].scaleResolutionDownBy = 3.3;
await sender.setParameters(parameters);
await doOfferToSendSimulcast(pc1, pc2);
await doAnswerToRecvSimulcast(pc1, pc2, []);
assert_equals(pc1.getTransceivers().length, 1);
const encodings = sender.getParameters().encodings;
const rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo"]);
assert_equals(encodings[0].scaleResolutionDownBy, 2.3);
}, 'a simulcast setParameters followed by a sRD(unicast answer) results in keeping the first encoding');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const {sender} = pc1.addTransceiver("video", {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcast(pc1, pc2);
await pc2.setLocalDescription();
const unicastAnswer = midToRid(pc2.localDescription, pc1.localDescription, []);
const parameters = sender.getParameters();
parameters.encodings[0].scaleResolutionDownBy = 2.3;
parameters.encodings[1].scaleResolutionDownBy = 3.3;
const answerDone = pc1.setRemoteDescription({type: "answer", sdp: unicastAnswer});
await sender.setParameters(parameters);
await answerDone;
assert_equals(pc1.getTransceivers().length, 1);
const encodings = sender.getParameters().encodings;
const rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo"]);
assert_equals(encodings[0].scaleResolutionDownBy, 2.3);
}, 'sRD(unicast answer) interrupted by setParameters(simulcast) results in keeping the first encoding');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const {sender} = pc1.addTransceiver("video", {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcastAndAnswer(pc1, pc2, ["foo", "bar"]);
assert_equals(pc1.getTransceivers().length, 1);
let encodings = sender.getParameters().encodings;
let rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo", "bar"]);
const reoffer = await pc2.createOffer();
const unicastSdp = midToRid(reoffer, pc1.localDescription, []);
const parameters = sender.getParameters();
parameters.encodings[0].scaleResolutionDownBy = 2.3;
parameters.encodings[1].scaleResolutionDownBy = 3.3;
const reofferDone = pc1.setRemoteDescription({type: "offer", sdp: unicastSdp});
await sender.setParameters(parameters);
await reofferDone;
await pc1.setLocalDescription();
encodings = sender.getParameters().encodings;
rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo"]);
assert_equals(encodings[0].scaleResolutionDownBy, 2.3);
}, 'sRD(unicast reoffer) interrupted by setParameters(simulcast) results in keeping the first encoding');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const {sender} = pc1.addTransceiver("video", {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcast(pc1, pc2);
await pc2.setLocalDescription();
const simulcastAnswer = midToRid(pc2.localDescription, pc1.localDescription, ["foo"]);
const parameters = sender.getParameters();
parameters.encodings[0].scaleResolutionDownBy = 3.3;
const answerDone = pc1.setRemoteDescription({type: "answer", sdp: simulcastAnswer});
await sender.setParameters(parameters);
await answerDone;
const {encodings} = sender.getParameters();
assert_equals(encodings.length, 1);
assert_equals(encodings[0].scaleResolutionDownBy, 3.3);
}, 'sRD(simulcast answer) interrupted by a setParameters does not result in losing modifications from the setParameters to the encodings that remain');
const simulcastOffer = `v=0
o=- 3840232462471583827 0 IN IP4 127.0.0.1
s=-
t=0 0
a=group:BUNDLE 0
a=msid-semantic: WMS
m=video 9 UDP/TLS/RTP/SAVPF 96
c=IN IP4 0.0.0.0
a=rtcp:9 IN IP4 0.0.0.0
a=ice-ufrag:Li6+
a=ice-pwd:3C05CTZBRQVmGCAq7hVasHlT
a=ice-options:trickle
a=fingerprint:sha-256 5B:D3:8E:66:0E:7D:D3:F3:8E:E6:80:28:19:FC:55:AD:58:5D:B9:3D:A8:DE:45:4A:E7:87:02:F8:3C:0B:3B:B3
a=setup:actpass
a=mid:0
a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
a=recvonly
a=rtcp-mux
a=rtpmap:96 VP8/90000
a=rtcp-fb:96 goog-remb
a=rtcp-fb:96 transport-cc
a=rtcp-fb:96 ccm fir
a=rid:foo recv
a=rid:bar recv
a=simulcast:recv foo;bar
`;
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const sender = pc1.addTrack(stream.getTracks()[0]);
const parameters = sender.getParameters();
parameters.encodings[0].scaleResolutionDownBy = 3.0;
await sender.setParameters(parameters);
await pc1.setRemoteDescription({type: "offer", sdp: simulcastOffer});
const {encodings} = sender.getParameters();
const rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo", "bar"]);
assert_equals(encodings[0].scaleResolutionDownBy, 2.0);
assert_equals(encodings[1].scaleResolutionDownBy, 1.0);
}, 'addTrack, then a unicast setParameters, then sRD(simulcast offer) results in simulcast without the settings from setParameters');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const sender = pc1.addTrack(stream.getTracks()[0]);
const parameters = sender.getParameters();
parameters.encodings[0].scaleResolutionDownBy = 3.0;
const offerDone = pc1.setRemoteDescription({type: "offer", sdp: simulcastOffer});
await sender.setParameters(parameters);
await offerDone;
const {encodings} = sender.getParameters();
const rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo", "bar"]);
assert_equals(encodings[0].scaleResolutionDownBy, 2.0);
assert_equals(encodings[1].scaleResolutionDownBy, 1.0);
}, 'addTrack, then sRD(simulcast offer) interrupted by a unicast setParameters results in simulcast without the settings from setParameters');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const {sender} = pc1.addTransceiver(stream.getTracks()[0], {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcastAndAnswer(pc1, pc2, ["foo", "bar"]);
pc2.getTransceivers()[0].direction = "sendrecv";
pc2.getTransceivers()[1].direction = "sendrecv";
await doOfferToRecvSimulcast(pc2, pc1, []);
// Race simulcast setParameters against sLD(unicast reanswer)
const answer = await pc1.createAnswer();
const aTask = queueAWebrtcTask();
// This also queues a task to clear [[LastReturnedParameters]]
const parameters = sender.getParameters();
// This might or might not queue a task right away (it might do some
// microtask stuff first), but it doesn't really matter.
const sLDDone = pc1.setLocalDescription(answer);
await aTask;
// Task queue should now have the task that clears
// [[LastReturnedParameters]], _then_ the success task for sLD.
// setParameters should succeed because [[LastReturnedParameters]] has not
// yet been cleared, and the steps in the success task for sLD have not run
// either.
await sender.setParameters(parameters);
await sLDDone;
assert_equals(pc1.getTransceivers().length, 1);
const {encodings} = sender.getParameters();
const rids = encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo"]);
}, 'getParameters, then sLD(unicast answer) interrupted by a simulcast setParameters results in unicast');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const {sender} = pc1.addTransceiver(stream.getTracks()[0], {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcastAndAnswer(pc1, pc2, ["foo", "bar"]);
pc2.getTransceivers()[0].direction = "sendrecv";
pc2.getTransceivers()[1].direction = "sendrecv";
await doOfferToRecvSimulcast(pc2, pc1, []);
const answer = await pc1.createAnswer();
// The timing on this is very difficult. We want to ensure that our
// getParameters call happens after the initial steps in sLD, but
// before the queued task that sLD runs when it completes.
const aTask = queueAWebrtcTask();
const sLDDone = pc1.setLocalDescription(answer);
// We now have a queued task (aTask). We might also have the success task for
// sLD, but maybe not. Allowing aTask to finish gives us our best chance that
// the success task for sLD is queued, but not run yet.
await aTask;
const parameters = sender.getParameters();
// Hopefully we now have the success task for sLD, followed by the
// success task for getParameters.
await sLDDone;
// Success task for getParameters should not have run yet.
await promise_rejects_dom(t, 'InvalidStateError', sender.setParameters(parameters));
},'Success task for setLocalDescription(answer) clears [[LastReturnedParameters]]');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const {sender} = pc1.addTransceiver(stream.getTracks()[0], {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcastAndAnswer(pc1, pc2, ["foo", "bar"]);
pc2.getTransceivers()[0].direction = "sendrecv";
pc2.getTransceivers()[1].direction = "sendrecv";
await pc2.setLocalDescription();
const simulcastOffer = midToRid(
pc2.localDescription,
pc1.localDescription,
[]
);
// The timing on this is very difficult. We need to ensure that our
// getParameters call happens after the initial steps in sRD, but
// before the queued task that sRD runs when it completes.
const aTask = queueAWebrtcTask();
const sRDDone = pc1.setRemoteDescription({ type: "offer", sdp: simulcastOffer });
await aTask;
const parameters = sender.getParameters();
await sRDDone;
await promise_rejects_dom(t, 'InvalidStateError', sender.setParameters(parameters));
},'Success task for setRemoteDescription(offer) clears [[LastReturnedParameters]]');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const {sender} = pc1.addTransceiver(stream.getTracks()[0], {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcastAndAnswer(pc1, pc2, ["foo", "bar"]);
pc2.getTransceivers()[0].direction = "sendrecv";
pc2.getTransceivers()[1].direction = "sendrecv";
await doOfferToSendSimulcast(pc1, pc2);
await pc2.setLocalDescription();
const simulcastAnswer = midToRid(
pc2.localDescription,
pc1.localDescription,
[]
);
// The timing on this is very difficult. We need to ensure that our
// getParameters call happens after the initial steps in sRD, but
// before the queued task that sRD runs when it completes.
const aTask = queueAWebrtcTask();
const sRDDone = pc1.setRemoteDescription({ type: "answer", sdp: simulcastAnswer });
await aTask;
const parameters = sender.getParameters();
await sRDDone;
await promise_rejects_dom(t, 'InvalidStateError', sender.setParameters(parameters));
},'Success task for setRemoteDescription(answer) clears [[LastReturnedParameters]]');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const sender = pc1.addTrack(stream.getTracks()[0]);
pc2.addTrack(stream.getTracks()[0]);
await doOfferToRecvSimulcast(pc2, pc1, ["foo", "bar"]);
let parameters = sender.getParameters();
let rids = parameters.encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo", "bar"]);
parameters.encodings[0].scaleResolutionDownBy = 3;
parameters.encodings[1].scaleResolutionDownBy = 5;
await sender.setParameters(parameters);
await pc1.setRemoteDescription({sdp: "", type: "rollback"});
parameters = sender.getParameters();
rids = parameters.encodings.map(({rid}) => rid);
assert_array_equals(rids, [undefined]);
assert_equals(parameters.encodings[0].scaleResolutionDownBy, 1);
}, 'addTrack, then rollback of sRD(simulcast offer), brings us back to having a single encoding without any previously set parameters');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const {sender} = pc1.addTransceiver(stream.getTracks()[0], {sendEncodings: [{rid: "foo"}, {rid: "bar"}]});
await doOfferToSendSimulcastAndAnswer(pc1, pc2, ["foo", "bar"]);
let parameters = sender.getParameters();
let rids = parameters.encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo", "bar"]);
parameters.encodings[0].scaleResolutionDownBy = 3;
parameters.encodings[1].scaleResolutionDownBy = 5;
await sender.setParameters(parameters);
await doOfferToRecvSimulcast(pc2, pc1, []);
parameters = sender.getParameters();
rids = parameters.encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo", "bar"]);
await pc1.setRemoteDescription({sdp: "", type: "rollback"});
parameters = sender.getParameters();
rids = parameters.encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo", "bar"]);
assert_equals(parameters.encodings[0].scaleResolutionDownBy, 3);
assert_equals(parameters.encodings[1].scaleResolutionDownBy, 5);
}, 'rollback of a remote offer that disabled a previously negotiated simulcast should restore simulcast along with any previously set parameters');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const sender = pc1.addTrack(stream.getTracks()[0]);
pc2.addTrack(stream.getTracks()[0]);
await doOfferToRecvSimulcast(pc2, pc1, ["foo", "bar"]);
const aTask = queueAWebrtcTask();
let parameters = sender.getParameters();
let rids = parameters.encodings.map(({rid}) => rid);
assert_array_equals(rids, ["foo", "bar"]);
parameters.encodings[0].scaleResolutionDownBy = 3;
parameters.encodings[1].scaleResolutionDownBy = 5;
const rollbackDone = pc1.setRemoteDescription({sdp: "", type: "rollback"});
await aTask;
await sender.setParameters(parameters);
await rollbackDone;
parameters = sender.getParameters();
rids = parameters.encodings.map(({rid}) => rid);
assert_array_equals(rids, [undefined]);
assert_equals(parameters.encodings[0].scaleResolutionDownBy, 1);
}, 'rollback of sRD(simulcast offer) interrupted by setParameters(simulcast) brings us back to having a single encoding without any previously set parameters');
</script>
|
