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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/media/webaudio/test/test_webAudio_muteTab.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/media/webaudio/test/test_webAudio_muteTab.html')
| -rw-r--r-- | dom/media/webaudio/test/test_webAudio_muteTab.html | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_webAudio_muteTab.html b/dom/media/webaudio/test/test_webAudio_muteTab.html new file mode 100644 index 0000000000..ced5c20c9d --- /dev/null +++ b/dom/media/webaudio/test/test_webAudio_muteTab.html @@ -0,0 +1,95 @@ +<!DOCTYPE HTML> +<html> +<head> + <script type="application/javascript" src="mediaStreamPlayback.js"></script> +</head> +<body> +<pre id="test"> + +<script> +createHTML({ + title: "Check tab muting when the tab plays audio via the Web Audio API", + bug: "1346880", + visible: false +}); + +/** + * Check that muting a tab results in no audible audio: mute a tab, in which + * an OscillatorNode is playing. The default audio output device is a + * pulseaudio null-sink. Simulateously, record the other side of the null + * sink, and check that no audio has been written to the sink, because the tab + * was muted. Then, umute the tab and check that audio is being sent to the + * null-sink. */ +runTest(async () => { + if (!SpecialPowers.getCharPref("media.audio_loopback_dev", "")) { + todo(false, "No loopback device set by framework. Try --use-test-media-devices"); + return; + } + + // Mute the tab + await SpecialPowers.toggleMuteState(true, window.top); + // Don't use a loopback tone, the loopback device is here to check that + // nothing is output because the tab is muted. + DISABLE_LOOPBACK_TONE = true; + + const stream = await getUserMedia({audio: { + noiseSuppression: false, + echoCancellation: false, + autoGainControl: false, + }}); + try { + const ac = new AudioContext(); + const osc = new OscillatorNode(ac); + osc.connect(ac.destination); + osc.start(); + + const analyser = new AudioStreamAnalyser(ac, stream); + // Wait for some time, checking there is only ever silent audio in the + // loopback stream. `waitForAnalysisSuccess` runs off requestAnimationFrame + let silenceFor = 3 / (1 / 60); + await analyser.waitForAnalysisSuccess(array => { + // `array` has values between 0 and 255, 0 being silence. + const sum = array.reduce((acc, v) => { return acc + v; }); + if (sum == 0) { + silenceFor--; + } else { + info(`Sum of the array values ${sum}`); + ok(false, `Found non-silent data in the loopback stream while the tab was muted.`); + return true; + } + if (silenceFor == 0) { + ok(true, "Muting the tab was effective"); + } + return silenceFor == 0; + }); + + // Unmute the tab + await SpecialPowers.toggleMuteState(false, window.top); + + await analyser.waitForAnalysisSuccess(array => { + // `array` has values between 0 and 255, 0 being silence. + const sum = array.reduce((acc, v) => { return acc + v; }); + if (sum != 0) { + info(`Sum after unmuting ${sum}`); + ok(true, "Unmuting the tab was effective"); + return true; + } else { + // Increment again if we find silence. + silenceFor++; + if (silenceFor > 100) { + ok(false, "Unmuting wasn't effective") + return true; + } + return false; + } + }); + } finally { + for (let t of stream.getTracks()) { + t.stop(); + } + } +}); +</script> +</pre> +</body> +</html> |