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<!DOCTYPE html>
<html>
<head>
<title>
Test Setting of channelCountMode and channelInterpretation
</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>
</head>
<body>
<script id="layout-test-code">
// Fairly arbitrary sample rate and number of frames, except the number of
// frames should be more than a few render quantums.
let sampleRate = 16000;
let renderFrames = 10 * 128;
let audit = Audit.createTaskRunner();
audit.define('interp', (task, should) => {
let context = new OfflineAudioContext(1, renderFrames, sampleRate);
let node = context.createGain();
// Set a new interpretation and verify that it changed.
node.channelInterpretation = 'discrete';
let value = node.channelInterpretation;
should(value, 'node.channelInterpretation').beEqualTo('discrete');
node.connect(context.destination);
context.startRendering()
.then(function(buffer) {
// After rendering, the value should have been changed.
should(
node.channelInterpretation,
'After rendering node.channelInterpretation')
.beEqualTo('discrete');
})
.then(() => task.done());
});
audit.define('mode', (task, should) => {
let context = new OfflineAudioContext(1, renderFrames, sampleRate);
let node = context.createGain();
// Set a new mode and verify that it changed.
node.channelCountMode = 'explicit';
let value = node.channelCountMode;
should(value, 'node.channelCountMode').beEqualTo('explicit');
node.connect(context.destination);
context.startRendering()
.then(function(buffer) {
// After rendering, the value should have been changed.
should(
node.channelCountMode,
'After rendering node.channelCountMode')
.beEqualTo('explicit');
})
.then(() => task.done());
});
audit.run();
</script>
</body>
</html>
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