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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /dom/media/tests/mochitest/test_getUserMedia_audioCapture.html | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/media/tests/mochitest/test_getUserMedia_audioCapture.html')
| -rw-r--r-- | dom/media/tests/mochitest/test_getUserMedia_audioCapture.html | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/dom/media/tests/mochitest/test_getUserMedia_audioCapture.html b/dom/media/tests/mochitest/test_getUserMedia_audioCapture.html new file mode 100644 index 000000000..1b5d6f144 --- /dev/null +++ b/dom/media/tests/mochitest/test_getUserMedia_audioCapture.html @@ -0,0 +1,109 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test AudioCapture </title> + <script type="application/javascript" src="mediaStreamPlayback.js"></script> +</head> +<body> +<pre id="test"> +<script> + +createHTML({ + bug: "1156472", + title: "Test AudioCapture with regular HTMLMediaElement, AudioContext, and HTMLMediaElement playing a MediaStream", + visible: true +}); + +scriptsReady +.then(() => FAKE_ENABLED = false) +.then(() => { + runTestWhenReady(function() { + // Get an opus file containing a sine wave at maximum amplitude, of duration + // `lengthSeconds`, and of frequency `frequency`. + function getSineWaveFile(frequency, lengthSeconds, callback) { + var chunks = []; + var off = new OfflineAudioContext(1, lengthSeconds * 48000, 48000); + var osc = off.createOscillator(); + var rec = new MediaRecorder(osc); + rec.ondataavailable = function(e) { + chunks.push(e.data); + }; + rec.onstop = function(e) { + var blob = new Blob(chunks, { 'type' : 'audio/ogg; codecs=opus' }); + callback(blob); + } + osc.frequency.value = frequency; + osc.start(); + rec.start(); + off.startRendering().then(function(buffer) { + rec.stop(); + }); + } + /** + * Get two HTMLMediaElements: + * - One playing a sine tone from a blob (of an opus file created on the fly) + * - One being the output for an AudioContext's OscillatorNode, connected to + * a MediaSourceDestinationNode. + * + * Also, use the AudioContext playing through its AudioDestinationNode another + * tone, using another OscillatorNode. + * + * Capture the output of the document, feed that back into the AudioContext, + * with an AnalyserNode, and check the frequency content to make sure we + * have recorded the three sources. + * + * The three sine tones have frequencies far apart from each other, so that we + * can check that the spectrum of the capture stream contains three + * components with a high magnitude. + */ + var wavtone = createMediaElement("audio", "WaveTone"); + var acTone = createMediaElement("audio", "audioContextTone"); + var ac = new AudioContext(); + + var oscThroughMediaElement = ac.createOscillator(); + oscThroughMediaElement.frequency.value = 1000; + var oscThroughAudioDestinationNode = ac.createOscillator(); + oscThroughAudioDestinationNode.frequency.value = 5000; + var msDest = ac.createMediaStreamDestination(); + + oscThroughMediaElement.connect(msDest); + oscThroughAudioDestinationNode.connect(ac.destination); + + acTone.mozSrcObject = msDest.stream; + + getSineWaveFile(10000, 10, function(blob) { + wavtone.src = URL.createObjectURL(blob); + oscThroughMediaElement.start(); + oscThroughAudioDestinationNode.start(); + wavtone.loop = true; + wavtone.play(); + acTone.play(); + }); + + var constraints = {audio: {mediaSource: "audioCapture"}}; + + return getUserMedia(constraints).then((stream) => { + window.grip = stream; + var analyser = new AudioStreamAnalyser(ac, stream); + analyser.enableDebugCanvas(); + return analyser.waitForAnalysisSuccess(function(array) { + // We want to find three frequency components here, around 1000, 5000 + // and 10000Hz. Frequency are logarithmic. Also make sure we have low + // energy in between, not just a flat white noise. + return (array[analyser.binIndexForFrequency(50)] < 50 && + array[analyser.binIndexForFrequency(1000)] > 200 && + array[analyser.binIndexForFrequency(2500)] < 50 && + array[analyser.binIndexForFrequency(5000)] > 200 && + array[analyser.binIndexForFrequency(7500)] < 50 && + array[analyser.binIndexForFrequency(10000)] > 200); + }).then(finish); + }).catch(finish); + }); +}); + + + +</script> +</pre> +</body> +</html> |