content/media/webaudio/test/test_offlineDestinationChannelCountLess.html

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 <!DOCTYPE HTML>
michael@0 2 <html>
michael@0 3 <head>
michael@0 4 <title>Test OfflineAudioContext with a channel count less than the specified number</title>
michael@0 5 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
michael@0 6 <script type="text/javascript" src="webaudio.js"></script>
michael@0 7 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
michael@0 8 </head>
michael@0 9 <body>
michael@0 10 <pre id="test">
michael@0 11 <script class="testbody" type="text/javascript">
michael@0 12
michael@0 13 SimpleTest.waitForExplicitFinish();
michael@0 14 addLoadEvent(function() {
michael@0 15 var ctx = new OfflineAudioContext(2, 100, 22050);
michael@0 16
michael@0 17 var buf = ctx.createBuffer(6, 100, ctx.sampleRate);
michael@0 18 for (var i = 0; i < 6; ++i) {
michael@0 19 for (var j = 0; j < 100; ++j) {
michael@0 20 buf.getChannelData(i)[j] = Math.sin(2 * Math.PI * 200 * j / ctx.sampleRate);
michael@0 21 }
michael@0 22 }
michael@0 23
michael@0 24 var src = ctx.createBufferSource();
michael@0 25 src.buffer = buf;
michael@0 26 src.start(0);
michael@0 27 src.connect(ctx.destination);
michael@0 28 ctx.destination.channelCountMode = "max";
michael@0 29 ctx.startRendering();
michael@0 30 ctx.oncomplete = function(e) {
michael@0 31 is(e.renderedBuffer.numberOfChannels, 2, "Correct expected number of buffers");
michael@0 32 compareChannels(e.renderedBuffer.getChannelData(0), buf.getChannelData(0));
michael@0 33 compareChannels(e.renderedBuffer.getChannelData(1), buf.getChannelData(1));
michael@0 34
michael@0 35 SimpleTest.finish();
michael@0 36 };
michael@0 37 });
michael@0 38
michael@0 39 </script>
michael@0 40 </pre>
michael@0 41 </body>
michael@0 42 </html>

mercurial