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
|
<!doctype html>
<meta charset=utf-8>
<meta name="timeout" content="long">
<title>RTCRtpParameters encodings</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/webrtc/dictionary-helper.js"></script>
<script src="/webrtc/RTCRtpParameters-helper.js"></script>
<script src="../webrtc/RTCPeerConnection-helper.js"></script>
<script>
'use strict';
// Test is based on the following editor draft:
// https://w3c.github.io/webrtc-svc/
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const { sender } = pc.addTransceiver('video', {
sendEncodings: [{scalabilityMode: 'L1T3'}],
});
const param = sender.getParameters();
const encoding = getFirstEncoding(param);
assert_equals(encoding.scalabilityMode, 'L1T3');
encoding.scalabilityMode = 'L1T2';
await sender.setParameters(param);
const updatedParam = sender.getParameters();
const updatedEncoding = getFirstEncoding(updatedParam);
assert_equals(updatedEncoding.scalabilityMode, 'L1T2');
}, `Setting and updating scalabilityMode to a legal value should be accepted`);
promise_test(async t => {
const capabilities = RTCRtpSender.getCapabilities('video');
var svcSupported = false;
for (const codec of capabilities.codecs) {
if ('scalabilityModes' in codec && codec.scalabilityModes.length > 0) {
svcSupported = true;
}
}
assert_true(svcSupported);
}, `Sender capabilities should include at least some scalability modes`);
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const { sender } = pc.addTransceiver('video');
const param = sender.getParameters();
assert_equals(param.encodings.length, 0);
}, 'Not setting sendEncodings results in no mode info before negotiation');
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const { sender } = pc.addTransceiver('video', {
sendEncodings: [{}],
});
const param = sender.getParameters();
const encoding = getFirstEncoding(param);
assert_true(!('scalabilityMode' in encoding));
}, 'Not setting a scalability mode results in no mode set before negotiation');
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
const { sender } = pc1.addTransceiver('video', {
sendEncodings: [{}],
});
const param = sender.getParameters();
const encoding = getFirstEncoding(param);
exchangeIceCandidates(pc1, pc2);
await exchangeOfferAnswer(pc1, pc2);
const param2 = sender.getParameters();
const encoding2 = getFirstEncoding(param);
assert_true('scalabilityMode' in encoding2);
}, 'Not setting a scalability mode results in some mode set after negotiation');
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
assert_throws_dom('OperationError', () => {
pc.addTransceiver('video', {
sendEncodings: [{scalabilityMode: 'TotalNonsense'}],
});
});
}, 'Setting a scalability mode to nonsense throws an exception');
promise_test(async t => {
const v = document.createElement('video');
v.autoplay = true;
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
const transceiver = pc1.addTransceiver('video', {
sendEncodings: [{ scalabilityMode: 'L3T3' }],
});
// Before negotiation, the mode should be preserved.
const param = transceiver.sender.getParameters();
const encoding = getFirstEncoding(param);
assert_true('scalabilityMode' in encoding);
// If L3T3 is not supported at all, abort test.
assert_implements_optional(encoding.scalabilityMode === 'L3T3');
// Pick a codec known to not have L3T3 support
const capabilities = RTCRtpSender.getCapabilities('video');
const codec = capabilities.codecs.find(c => c.mimeType === 'video/VP8');
assert_true(codec !== undefined);
transceiver.setCodecPreferences([codec]);
exchangeIceCandidates(pc1, pc2);
await exchangeOfferAnswer(pc1, pc2);
const sendParams = pc1.getSenders()[0].getParameters();
assert_not_equals(sendParams.encodings[0].scalabilityMode, 'L3T3');
}, 'L3T3 on VP8 should return something other than L3T3');
</script>
|
