1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webaudio/test/test_oscillatorNode2.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,53 @@
1.4 +<!DOCTYPE HTML>
1.5 +<html>
1.6 +<head>
1.7 + <title>Test OscillatorNode lifetime and sine phase</title>
1.8 + <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
1.9 + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
1.10 +</head>
1.11 +<body>
1.12 +<pre id="test">
1.13 +<script src="webaudio.js" type="text/javascript"></script>
1.14 +<script class="testbody" type="text/javascript">
1.15 +
1.16 +const signalLength = 2048;
1.17 +
1.18 +function createOscillator(context) {
1.19 + var osc = context.createOscillator();
1.20 + osc.start(0);
1.21 + osc.stop(signalLength/context.sampleRate);
1.22 + return osc;
1.23 +}
1.24 +
1.25 +function connectUnreferencedOscillator(context, destination) {
1.26 + var osc = createOscillator(context);
1.27 + osc.connect(destination);
1.28 +}
1.29 +
1.30 +var gTest = {
1.31 + length: signalLength,
1.32 + numberOfChannels: 1,
1.33 + createGraph: function(context) {
1.34 + var blend = context.createGain();
1.35 +
1.36 + connectUnreferencedOscillator(context, blend);
1.37 + // Test that the unreferenced oscillator remains alive until it has finished.
1.38 + SpecialPowers.forceGC();
1.39 + SpecialPowers.forceCC();
1.40 +
1.41 + // Create another sine wave oscillator in negative time, which should
1.42 + // cancel when mixed with the unreferenced oscillator.
1.43 + var oscillator = createOscillator(context);
1.44 + oscillator.frequency.value = -440;
1.45 + oscillator.connect(blend);
1.46 +
1.47 + return blend;
1.48 + },
1.49 +};
1.50 +
1.51 +runTest();
1.52 +
1.53 +</script>
1.54 +</pre>
1.55 +</body>
1.56 +</html>
