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
|
<!DOCTYPE HTML>
<html>
<head>
<script type="application/javascript" src="mediaStreamPlayback.js"></script>
</head>
<body>
<pre id="test">
<script type="application/javascript">
"use strict";
createHTML({
title: "Test that the audio constraints that observe at the audio constraints we expect.",
bug: "1509842"
});
runTest(async () => {
// We need a real device to get a MediaEngine supporting constraints
let audioDevice = SpecialPowers.getCharPref("media.audio_loopback_dev", "");
if (!audioDevice) {
todo(false, "No device set by framework. Try --use-test-media-devices");
return;
}
// Get a gUM track with the default settings, check that they are what we
// expect.
let stream = await navigator.mediaDevices.getUserMedia({ audio: true });
let track = stream.getAudioTracks()[0];
let defaultSettings = track.getSettings();
is(defaultSettings.echoCancellation, true,
"Echo cancellation should be ON by default.");
is(defaultSettings.noiseSuppression, true,
"Noise suppression should be ON by default.");
is(defaultSettings.autoGainControl, true,
"Automatic gain control should be ON by default.");
track.stop();
// This is UA-dependant, and belongs in a Mochitest, not in a WPT.
// When a gUM track has been requested with `echoCancellation` OFF, check that
// `noiseSuppression` and `autoGainControl` are off as well.
stream =
await navigator.mediaDevices.getUserMedia({audio:{echoCancellation: false}});
track = stream.getAudioTracks()[0];
defaultSettings = track.getSettings();
is(defaultSettings.echoCancellation, false,
"Echo cancellation should be OFF when requested.");
is(defaultSettings.noiseSuppression, false,
`Noise suppression should be OFF when echoCancellation is the only
constraint and is OFF.`);
is(defaultSettings.autoGainControl, false,
`Automatic gain control should be OFF when echoCancellation is the only
constraint and is OFF.`);
track.stop();
// When a gUM track has been requested with `echoCancellation` OFF, check that
// `noiseSuppression` and `autoGainControl` are not OFF as well if another
// constraint has been specified.
stream =
await navigator.mediaDevices.getUserMedia({audio:{echoCancellation: false,
autoGainControl: true}});
track = stream.getAudioTracks()[0];
defaultSettings = track.getSettings();
is(defaultSettings.echoCancellation, false,
"Echo cancellation should be OFF when requested.");
is(defaultSettings.noiseSuppression, false,
`Noise suppression should be OFF when echoCancellation is OFF and another
constraint has been specified.`);
is(defaultSettings.autoGainControl, true,
"Auto gain control should be ON when requested.");
track.stop();
});
</script>
</pre>
</body>
</html>
|
