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<!DOCTYPE html>
<html>
<head>
<title>
Test Scheduled Sources with Huge Time Limits
</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/webaudio/resources/audit-util.js"></script>
<script src="/webaudio/resources/audit.js"></script>
<script src="/webaudio/resources/audioparam-testing.js"></script>
</head>
<body>
<script id="layout-test-code">
let sampleRate = 48000;
let renderFrames = 1000;
let audit = Audit.createTaskRunner();
audit.define('buffersource: huge stop time', (task, should) => {
// We only need to generate a small number of frames for this test.
let context = new OfflineAudioContext(1, renderFrames, sampleRate);
let src = context.createBufferSource();
// Constant source of amplitude 1, looping.
src.buffer = createConstantBuffer(context, 1, 1);
src.loop = true;
// Create the graph and go!
let endTime = 1e300;
src.connect(context.destination);
src.start();
src.stop(endTime);
context.startRendering()
.then(function(resultBuffer) {
let result = resultBuffer.getChannelData(0);
should(
result, 'Output from AudioBufferSource.stop(' + endTime + ')')
.beConstantValueOf(1);
})
.then(() => task.done());
});
audit.define('oscillator: huge stop time', (task, should) => {
// We only need to generate a small number of frames for this test.
let context = new OfflineAudioContext(1, renderFrames, sampleRate);
let src = context.createOscillator();
// Create the graph and go!
let endTime = 1e300;
src.connect(context.destination);
src.start();
src.stop(endTime);
context.startRendering()
.then(function(resultBuffer) {
let result = resultBuffer.getChannelData(0);
// The buffer should not be empty. Just find the max and verify
// that it's not zero.
let max = Math.max.apply(null, result);
should(
max, 'Peak amplitude from oscillator.stop(' + endTime + ')')
.beGreaterThan(0);
})
.then(() => task.done());
});
audit.run();
</script>
</body>
</html>
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