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<!DOCTYPE html>
<html>
<head>
<title>
audiobuffersource-channels.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>
</head>
<body>
<script id="layout-test-code">
let audit = Audit.createTaskRunner();
let context;
let source;
audit.define(
{
label: 'validate .buffer',
description:
'Validatation of AudioBuffer in .buffer attribute setter'
},
function(task, should) {
context = new AudioContext();
source = context.createBufferSource();
// Make sure we can't set to something which isn't an AudioBuffer.
should(function() {
source.buffer = 57;
}, 'source.buffer = 57').throw(TypeError);
// It's ok to set the buffer to null.
should(function() {
source.buffer = null;
}, 'source.buffer = null').notThrow();
// Set the buffer to a valid AudioBuffer
let buffer =
new AudioBuffer({length: 128, sampleRate: context.sampleRate});
should(function() {
source.buffer = buffer;
}, 'source.buffer = buffer').notThrow();
// The buffer has been set; we can't set it again.
should(function() {
source.buffer =
new AudioBuffer({length: 128, sampleRate: context.sampleRate})
}, 'source.buffer = new buffer').throw(DOMException, 'InvalidStateError');
// The buffer has been set; it's ok to set it to null.
should(function() {
source.buffer = null;
}, 'source.buffer = null again').notThrow();
// The buffer was already set (and set to null). Can't set it
// again.
should(function() {
source.buffer = buffer;
}, 'source.buffer = buffer again').throw(DOMException, 'InvalidStateError');
// But setting to null is ok.
should(function() {
}, 'source.buffer = null after setting to null').notThrow();
// Check that mono buffer can be set.
should(function() {
let monoBuffer =
context.createBuffer(1, 1024, context.sampleRate);
let testSource = context.createBufferSource();
testSource.buffer = monoBuffer;
}, 'Setting source with mono buffer').notThrow();
// Check that stereo buffer can be set.
should(function() {
let stereoBuffer =
context.createBuffer(2, 1024, context.sampleRate);
let testSource = context.createBufferSource();
testSource.buffer = stereoBuffer;
}, 'Setting source with stereo buffer').notThrow();
// Check buffers with more than two channels.
for (let i = 3; i < 10; ++i) {
should(function() {
let buffer = context.createBuffer(i, 1024, context.sampleRate);
let testSource = context.createBufferSource();
testSource.buffer = buffer;
}, 'Setting source with ' + i + ' channels buffer').notThrow();
}
task.done();
});
audit.run();
</script>
</body>
</html>
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