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<!DOCTYPE html>
<html>
<head>
<title>
audioparam-setValueAtTime.html
</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 audit = Audit.createTaskRunner();
// Play a long DC signal out through an AudioGainNode, and call
// setValueAtTime() at regular intervals to set the value for the duration
// of the interval. Each time interval has different value so that there
// is a discontinuity at each time interval boundary. The discontinuity
// is for testing timing.
// Number of tests to run.
let numberOfTests = 100;
// Max allowed difference between the rendered data and the expected
// result.
let maxAllowedError = 6e-8;
// Set the gain node value to the specified value at the specified time.
function setValue(value, time) {
gainNode.gain.setValueAtTime(value, time);
}
// For testing setValueAtTime(), we don't need to do anything for
// automation. because the value at the beginning of the interval is set
// by setValue and it remains constant for the duration, which is what we
// want.
function automation(value, startTime, endTime) {
// Do nothing.
}
audit.define(
{
label: 'test',
description: 'AudioParam setValueAtTime() functionality.'
},
function(task, should) {
createAudioGraphAndTest(
task, should, numberOfTests, 1, setValue, automation,
'setValueAtTime()', maxAllowedError, createConstantArray);
});
audit.run();
</script>
</body>
</html>
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