Bug 1406910 - Add mochitest for audio gUM and no output. r?jib
MozReview-Commit-ID: 2POeIQBPEUo
--- a/dom/media/tests/mochitest/head.js
+++ b/dom/media/tests/mochitest/head.js
@@ -252,16 +252,44 @@ function createOscillatorStream(ac, freq
var oscDest = ac.createMediaStreamDestination();
osc.connect(oscDest);
osc.start();
return oscDest.stream;
}
/**
+ * Record a MediaStream until the tracks in `stream` end, or the promise `stop`
+ * resolves.
+ *
+ * @param {MediaStream} stream
+ * A MediaStream object which we shall record.
+ * @param {Promise} stop
+ * A Promise that on resolving shall stop the recording.
+ * @returns {blob} A blob containing the recorded file.
+ */
+async function record(stream, stop) {
+ let recorder = new MediaRecorder(stream);
+ recorder.start();
+ let dataAvailable = haveEvent(recorder, "dataavailable");
+
+ await Promise.race([
+ haveEvent(recorder, "stop"),
+ haveEvent(recorder, "error").then(e => Promise.reject(e)),
+ stop,
+ ]);
+
+ if (recorder.state == "recording") {
+ recorder.stop();
+ }
+
+ return (await dataAvailable).data;
+}
+
+/**
* Create the necessary HTML elements for head and body as used by Mochitests
*
* @param {object} meta
* Meta information of the test
* @param {string} meta.title
* Description of the test
* @param {string} [meta.bug]
* Bug the test was created for
--- a/dom/media/tests/mochitest/mochitest.ini
+++ b/dom/media/tests/mochitest/mochitest.ini
@@ -40,16 +40,17 @@ skip-if = android_version == '18' # andr
skip-if = android_version == '18' # android(Bug 1189784, timeouts on 4.3 emulator)
[test_dataChannel_noOffer.html]
[test_enumerateDevices.html]
[test_enumerateDevices_iframe.html]
skip-if = true # needed by test_enumerateDevices.html on builders
[test_ondevicechange.html]
skip-if = os == 'android'
[test_getUserMedia_active_autoplay.html]
+[test_getUserMedia_audio_inputOnly.html]
[test_getUserMedia_audioCapture.html]
skip-if = toolkit == 'android' # android(Bug 1189784, timeouts on 4.3 emulator), android(Bug 1264333)
[test_getUserMedia_addTrackRemoveTrack.html]
skip-if = android_version == '18' || os == 'linux' # android(Bug 1189784, timeouts on 4.3 emulator), linux bug 1377450
[test_getUserMedia_addtrack_removetrack_events.html]
skip-if = os == 'linux' && debug # Bug 1389983
[test_getUserMedia_basicAudio_loopback.html]
skip-if = os == 'mac' || os == 'win' || toolkit == 'android' # Bug 1404995, no loopback devices on some platforms
new file mode 100644
--- /dev/null
+++ b/dom/media/tests/mochitest/test_getUserMedia_audio_inputOnly.html
@@ -0,0 +1,79 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+ <script type="application/javascript" src="mediaStreamPlayback.js"></script>
+</head>
+<body>
+<pre id="test">
+<script type="application/javascript">
+ createHTML({
+ title: "getUserMedia Audio Test with no audio output present",
+ bug: "1406027",
+ visible: true,
+ });
+
+ runTest(async () => {
+ if (!FAKE_ENABLED) {
+ // Set the frequency to something other than pulse's sine-source's default
+ TEST_AUDIO_FREQ = 2000;
+ }
+
+ // We want to test audio capture by a MediaStreamGraph that has no audio
+ // outputs. Playing a file uses a separate path for output so this is ok
+ // to feed the MSG input track through our loopback device.
+ let outputAudio = createMediaElement("audio", "output");
+ let sine = URL.createObjectURL(await getSineWaveFile(TEST_AUDIO_FREQ, 5));
+ outputAudio.loop = true;
+ outputAudio.src = sine;
+ await haveEvent(outputAudio, "playing");
+
+ let stream = await getUserMedia({audio: true});
+ let blob = await record(stream, wait(5000));
+ stream.getTracks().forEach(t => t.stop());
+ outputAudio.src = "";
+ URL.revokeObjectURL(sine);
+
+ let audio = document.createElement("audio");
+ audio.preload = "metadata";
+ let recording = URL.createObjectURL(blob);
+ audio.src = recording;
+ await haveEvent(audio, "loadedmetadata");
+ let ended = haveEvent(audio, "ended");
+
+ let ac = new AudioContext();
+ let analyser = new AudioStreamAnalyser(ac, audio.mozCaptureStream());
+ analyser.enableDebugCanvas();
+ audio.play();
+
+ let count = 0;
+ await analyser.waitForAnalysisSuccess(
+ array => {
+ if (array[analyser.binIndexForFrequency(TEST_AUDIO_FREQ * 0.5)] < 50 &&
+ array[analyser.binIndexForFrequency(TEST_AUDIO_FREQ)] > 200 &&
+ array[analyser.binIndexForFrequency(TEST_AUDIO_FREQ * 1.5)] < 50) {
+ if (count == 0) {
+ info("Audio analysis passed. Need 9 more passes in a row.");
+ }
+ // Audio input should be smooth enough to pass the check 10
+ // iterations in a row
+ return (++count) == 10;
+ }
+ if (count > 0) {
+ info(`Audio analysis failed after ${count} passes`);
+ }
+ count = 0;
+ return false;
+ },
+ ended.then(() => new Error("Recording ended. Analysis failed.")));
+
+ ok(true, "Analysis OK");
+
+ analyser.disableDebugCanvas();
+ URL.revokeObjectURL(recording);
+ audio.src = null;
+ });
+
+</script>
+</pre>
+</body>
+</html>