mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-08 04:27:37 +00:00
63 lines
1.8 KiB
HTML
63 lines
1.8 KiB
HTML
<!DOCTYPE HTML>
|
|
<html>
|
|
<head>
|
|
<title>Test buffers do not interfere when scheduled in sequence</title>
|
|
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
|
|
<script type="text/javascript" src="webaudio.js"></script>
|
|
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
|
|
</head>
|
|
<body>
|
|
<pre id="test">
|
|
<script class="testbody" type="text/javascript">
|
|
var OFFSETS = [0.005, 0.01, 0.02, 0.03];
|
|
var LENGTH = 128;
|
|
|
|
var gTest = {
|
|
length: 128 * OFFSETS.length,
|
|
numberOfChannels: 1,
|
|
|
|
createGraph: function(context) {
|
|
var gain = context.createGain();
|
|
|
|
// create a repeating sample
|
|
var repeatingSample = context.createBuffer(1, 2, context.sampleRate);
|
|
var c = repeatingSample.getChannelData(0);
|
|
for (var i = 0; i < repeatingSample.length; ++i) {
|
|
c[i] = i % 2 == 0 ? 1 : -1;
|
|
}
|
|
|
|
OFFSETS.forEach(function (offset, offsetIdx) {
|
|
// Schedule a set of nodes to repeat the sample.
|
|
for (var i = 0; i < LENGTH; i += repeatingSample.length) {
|
|
var source = context.createBufferSource();
|
|
source.buffer = repeatingSample;
|
|
source.connect(gain);
|
|
source.start((offsetIdx * LENGTH + i + offset) / context.sampleRate);
|
|
}
|
|
|
|
buffer = context.createBuffer(1, LENGTH, context.sampleRate);
|
|
c = buffer.getChannelData(0);
|
|
for (var i = 0; i < buffer.length; ++i) {
|
|
c[i] = i % 2 == 0 ? -1 : 1;
|
|
}
|
|
|
|
var source = context.createBufferSource();
|
|
source.buffer = buffer;
|
|
source.connect(gain);
|
|
source.start((offsetIdx * LENGTH + offset) / context.sampleRate);
|
|
});
|
|
|
|
return gain;
|
|
},
|
|
|
|
createExpectedBuffers: function(context) {
|
|
return context.createBuffer(1, gTest.length, context.sampleRate);
|
|
},
|
|
};
|
|
|
|
runTest();
|
|
</script>
|
|
</pre>
|
|
</body>
|
|
</html>
|