commit b247a808e7eb23cb2b8c23c387780adaf75e298f
parent 308fbd7f610caec894338ccbede5c5c12e1b38b1
Author: Karl Tomlinson <karlt+@karlt.net>
Date: Mon, 5 Jan 2026 20:12:33 +0000
Bug 2006940 Test clone of disabled audio track from getUserMedia() r=webrtc-reviewers,dbaker
Differential Revision: https://phabricator.services.mozilla.com/D277839
Diffstat:
2 files changed, 48 insertions(+), 0 deletions(-)
diff --git a/testing/web-platform/mozilla/meta/mediacapture-streams/getUserMedia-audio-disabled-clone.https.html.ini b/testing/web-platform/mozilla/meta/mediacapture-streams/getUserMedia-audio-disabled-clone.https.html.ini
@@ -0,0 +1,2 @@
+[getUserMedia-audio-disabled-clone.https.html]
+ prefs: [media.getusermedia.microphone.off_while_disabled.delay_ms:0, media.navigator.streams.fake:false, media.cubeb.force_mock_context:true]
diff --git a/testing/web-platform/mozilla/tests/mediacapture-streams/getUserMedia-audio-disabled-clone.https.html b/testing/web-platform/mozilla/tests/mediacapture-streams/getUserMedia-audio-disabled-clone.https.html
@@ -0,0 +1,46 @@
+<!doctype html>
+<title>Test clone of disabled audio track from getUserMedia()</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<body></body>
+<script>
+'use strict';
+
+async function promise_is_track_silent(track) {
+ const ctx = new AudioContext();
+ const sourceNode =
+ new MediaStreamTrackAudioSourceNode(ctx, {mediaStreamTrack: track});
+ const processor = ctx.createScriptProcessor(8192, 1, 0);
+ sourceNode.connect(processor);
+ const e = await new Promise(resolve => processor.onaudioprocess = resolve);
+ ctx.close();
+ const input = e.inputBuffer.getChannelData(0);
+ for (const sample of input) {
+ if (sample != 0.0) {
+ return false;
+ }
+ }
+ return true;
+}
+
+promise_test(async t => {
+ const stream = await navigator.mediaDevices.getUserMedia({audio: true});
+ const [track] = stream.getTracks();
+ track.enabled = false;
+ // media.getusermedia.microphone.off_while_disabled.delay_ms is 0.
+ // Allow some events to be processed for DeviceListener::SetDeviceEnabled()
+ // to change mDeviceState.mDeviceEnabled.
+ for (const i of Array(2).keys()) {
+ await new Promise(resolve => t.step_timeout(resolve, 0));
+ }
+ const clone = track.clone();
+ assert_false(clone.enabled, 'clone.enabled');
+ assert_true(await promise_is_track_silent(clone),
+ 'clone silent before enabled');
+ clone.enabled = true;
+ assert_false(await promise_is_track_silent(clone),
+ 'clone silent after enabled');
+ assert_false(track.enabled, 'track.enabled');
+ assert_true(await promise_is_track_silent(track), 'track silent');
+}, 'clone of disabled getUserMedia() audio track');
+</script>
