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Test Info:
<!DOCTYPE HTML>
<html>
<head>
<title>Test when and currentTime are in the same coordinate system</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test">
<script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout("This test needs to wait a while for the AudioContext's timer to start.");
addLoadEvent(function() {
var freq = 330;
var context = new AudioContext();
var buffer = context.createBuffer(1, context.sampleRate / freq, context.sampleRate);
for (var i = 0; i < buffer.length; ++i) {
buffer.getChannelData(0)[i] = Math.sin(2 * Math.PI * i / buffer.length);
}
var source = context.createBufferSource();
source.loop = true;
source.buffer = buffer;
setTimeout(function () {
var finished = false;
source.start(context.currentTime);
var processor = context.createScriptProcessor(256, 1, 1);
processor.onaudioprocess = function (e) {
if (finished) return;
var c = e.inputBuffer.getChannelData(0);
var result = true;
for (var i = 0; i < buffer.length; ++i) {
if (Math.abs(c[i] - buffer.getChannelData(0)[i]) > 1e-9) {
result = false;
break;
}
}
finished = true;
ok(result, "when and currentTime are in same time coordinate system");
SimpleTest.finish();
}
processor.connect(context.destination);
source.connect(processor);
}, 500);
});
</script>
</pre>
</body>
</html>