forked from mirrors/gecko-dev
717d9a23ba
Backed out changeset e926364f5d4f (bug 1665713) Backed out changeset ad03f6f54321 (bug 1665713)
94 lines
3.7 KiB
HTML
94 lines
3.7 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<script type="application/javascript" src="mediaStreamPlayback.js"></script>
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</head>
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<body>
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<pre id="test">
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<script>
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createHTML({
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title: "getUserMedia Basic Audio Test Loopback",
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bug: "1406350",
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visible: true
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});
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/**
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* Run a test to verify the use of LoopbackTone as audio input.
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*/
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scriptsReady.then(() => runTestWhenReady(async () => {
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let audioDevice = SpecialPowers.getCharPref("media.audio_loopback_dev", "");
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if (!audioDevice) {
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todo(false, "No loopback device set by framework. Try --use-test-media-devices");
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return Promise.resolve();
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}
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// At this point DefaultLoopbackTone has been instantiated
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// automatically on frequency TEST_AUDIO_FREQ (440 Hz). Verify
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// that a tone is detected on that frequency.
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info("Capturing at default frequency");
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let stream = await getUserMedia({audio: true});
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let audioContext = new AudioContext();
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let analyser = new AudioStreamAnalyser(audioContext, stream);
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analyser.enableDebugCanvas();
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await analyser.waitForAnalysisSuccess( array => {
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// High energy on 1000 Hz low energy around that
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const freg_50Hz = array[analyser.binIndexForFrequency(50)];
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const freq = array[analyser.binIndexForFrequency(TEST_AUDIO_FREQ)];
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const freq_2000Hz = array[analyser.binIndexForFrequency(2000)];
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info("Analysing audio frequency - low:target:high = "
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+ freg_50Hz + ':' + freq + ':' + freq_2000Hz);
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return freg_50Hz < 50 && freq > 200 && freq_2000Hz < 50;
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})
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// Use the LoopbackTone API to change the frequency of the default tone.
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// Verify that a tone is detected on the new frequency (800 Hz).
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info("Change loopback tone frequency");
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DefaultLoopbackTone.changeFrequency(800);
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await analyser.waitForAnalysisSuccess( array => {
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const freg_50Hz = array[analyser.binIndexForFrequency(50)];
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const freq = array[analyser.binIndexForFrequency(800)];
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const freq_2000Hz = array[analyser.binIndexForFrequency(2000)];
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info("Analysing audio frequency - low:target:high = "
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+ freg_50Hz + ':' + freq + ':' + freq_2000Hz);
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return freg_50Hz < 50 && freq > 200 && freq_2000Hz < 50;
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})
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// Create a second tone at a different frequency.
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// Verify that both tones are detected.
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info("Multiple loopback tones");
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DefaultLoopbackTone.changeFrequency(TEST_AUDIO_FREQ);
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let second_tone = new LoopbackTone(audioContext, 2000);
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second_tone.start();
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await analyser.waitForAnalysisSuccess( array => {
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const freg_50Hz = array[analyser.binIndexForFrequency(50)];
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const freq = array[analyser.binIndexForFrequency(TEST_AUDIO_FREQ)];
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const freq_2000Hz = array[analyser.binIndexForFrequency(2000)];
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const freq_4000Hz = array[analyser.binIndexForFrequency(4000)];
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info("Analysing audio frequency - low:target1:target2:high = "
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+ freg_50Hz + ':' + freq + ':' + freq_2000Hz + ':' + freq_4000Hz);
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return freg_50Hz < 50 && freq > 200 && freq_2000Hz > 200 && freq_4000Hz < 50;
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})
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// Stop all tones and verify that there is no audio on the given frequencies.
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info("Stop all loopback tones");
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DefaultLoopbackTone.stop();
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second_tone.stop()
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await analyser.waitForAnalysisSuccess( array => {
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const freg_50Hz = array[analyser.binIndexForFrequency(50)];
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const freq = array[analyser.binIndexForFrequency(TEST_AUDIO_FREQ)];
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const freq_2000Hz = array[analyser.binIndexForFrequency(2000)];
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info("Analysing audio frequency - low:target:high = "
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+ freg_50Hz + ':' + freq + ':' + freq_2000Hz);
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return freg_50Hz < 50 && freq < 50 && freq_2000Hz < 50;
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})
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}))
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.then(() => finish())
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</script>
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</pre>
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</body>
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</html>
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