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| (Empty) | |
| 1 <!doctype html> |
| 2 <html> |
| 3 <head> |
| 4 <title>A disabled audio track is rendered as silence</title> |
| 5 <link rel="author" title="Dominique Hazael-Massieux" href="mailto:dom@w3.org"/> |
| 6 <link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#in
troduction"> |
| 7 <link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#me
diastreams-as-media-elements"> |
| 8 <link rel='stylesheet' href='../../../../../resources/testharness.css' media='al
l'/> |
| 9 </head> |
| 10 <body> |
| 11 <p class="instructions" style="display:none">When prompted, accept to share your
audio stream.</p> |
| 12 <h1 class="instructions" style="display:none">Description</h1> |
| 13 <p class="instructions" style="display:none">This test checks that a disabled au
dio track in a |
| 14 MediaStream is rendered as silence. It relies on the |
| 15 <a href="https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html"> |
| 16 Web Audio API</a>.</p> |
| 17 |
| 18 <div id='log'></div> |
| 19 <script src=../../../../../resources/testharness.js></script> |
| 20 <script src=../../../../../resources/testharnessreport.js></script> |
| 21 <script src="../../../../../resources/vendor-prefix.js" data-prefixed-objects='[
{"ancestors":["navigator"], "name":"getUserMedia"}, {"ancestors":["window"], "na
me":"AudioContext"}]'></script> |
| 22 <script> |
| 23 var t = async_test("Tests that a disabled audio track in a MediaStream is render
ed as silence", {timeout: 200000}); |
| 24 var aud = document.getElementById("aud"); |
| 25 t.step(function() { |
| 26 navigator.getUserMedia({audio: true}, t.step_func(function (stream) { |
| 27 var ctx = new AudioContext(); |
| 28 var streamSource = ctx.createMediaStreamSource(stream); |
| 29 var silenceDetector = ctx.createScriptProcessor(1024); |
| 30 var count = 10; |
| 31 silenceDetector.onaudioprocess = t.step_func(function (e) { |
| 32 var buffer1 = e.inputBuffer.getChannelData(0); |
| 33 var buffer2 = e.inputBuffer.getChannelData(1); |
| 34 var out = e.outputBuffer.getChannelData(0); |
| 35 out = new Float32Array(buffer1); |
| 36 for (var i = 0; i < buffer1.length; i++) { |
| 37 assert_equals(buffer1[i], 0, "Audio buffer entry #" + i + " in channel
0 is silent"); |
| 38 } |
| 39 for (var i = 0; i < buffer2.length; i++) { |
| 40 assert_equals(buffer2[i], 0, "Audio buffer entry #" + i + " in channel
1 is silent"); |
| 41 } |
| 42 count--; |
| 43 if (count === 0) { |
| 44 silenceDetector.onaudioprocess = null; |
| 45 t.done(); |
| 46 } |
| 47 }); |
| 48 stream.getAudioTracks()[0].enabled = false; |
| 49 |
| 50 streamSource.connect(silenceDetector); |
| 51 silenceDetector.connect(ctx.destination); |
| 52 }), function(error) {}); |
| 53 }); |
| 54 </script> |
| 55 </body> |
| 56 </html> |
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Chromium Code Reviews
Issue 560893005:
First checked-in import of the W3C's test suites. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk