| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Testing local audio capture playback causes "playing" event to fire</title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <script> |
| if (window.testRunner) |
| testRunner.setUserMediaPermission(true); |
| |
| var heardHum = false; |
| var heardBop = false; |
| var heardBip = false; |
| |
| var test = async_test(() => { |
| navigator.mediaDevices.getUserMedia({audio: true}).then((stream) => { |
| var context = new AudioContext(); |
| var sourceNode = context.createMediaStreamSource(stream); |
| var analyser = context.createAnalyser(); |
| var gain = context.createGain(); |
| |
| analyser.fftSize = 2048; |
| analyser.smoothingTimeConstant = 0; |
| analyser.minDecibels = -100; |
| analyser.maxDecibels = 0; |
| gain.gain.value = 0; |
| |
| sourceNode.connect(analyser); |
| analyser.connect(gain); |
| gain.connect(context.destination); |
| |
| const secondSource = context.createMediaStreamSource(stream); |
| const sourceGain = new GainNode(context, { gain : 0 }); |
| secondSource.connect(gain); |
| sourceGain.connect(context.destination); |
| |
| function analyse() { |
| var freqDomain = new Uint8Array(analyser.frequencyBinCount); |
| analyser.getByteFrequencyData(freqDomain); |
| |
| var hasFrequency = expectedFrequency => { |
| var bin = Math.floor(expectedFrequency * analyser.fftSize / context.sampleRate); |
| return bin < freqDomain.length && freqDomain[bin] >= 150; |
| }; |
| |
| if (!heardHum) |
| heardHum = hasFrequency(150); |
| |
| if (!heardBip) |
| heardBip = hasFrequency(1500); |
| |
| if (!heardBop) |
| heardBop = hasFrequency(500); |
| |
| if (heardHum && heardBip && heardBop) |
| done(); |
| }; |
| |
| var done = () => { |
| clearTimeout(timeout); |
| clearInterval(interval); |
| |
| assert_true(heardHum); |
| assert_true(heardBip); |
| assert_true(heardBop); |
| test.done(); |
| }; |
| |
| var timeout = setTimeout(() => { done(); }, 3000); |
| var interval = setInterval(() => { analyse(); }, 1000 / 30); |
| analyse(); |
| }); |
| }, "Basic getUserMedia to Web Audio test"); |
| </script> |
| </body> |
| </html> |
