webaudio/delaynode.html

<!DOCTYPE html>

<html>
<head>
<script src="../fast/js/resources/js-test-pre.js"></script>
<script src="resources/audio-testing.js"></script>
<script src="resources/delay-testing.js"></script>
</head>

<body>

<div id="description"></div>
<div id="console"></div>

<script>
description("Tests attribute and basic functionality of DelayNode.");

function runTest() {
    if (window.testRunner) {
        testRunner.dumpAsText();
        testRunner.waitUntilDone();
    }
    
    window.jsTestIsAsync = true;
        
    // Create offline audio context.
    var context = new webkitAudioContext(1, sampleRate * renderLengthSeconds, sampleRate);
    var toneBuffer = createToneBuffer(context, 20, 20 * toneLengthSeconds, sampleRate); // 20Hz tone
    
    var bufferSource = context.createBufferSource();
    bufferSource.buffer = toneBuffer;

    var delay = context.createDelayNode();
    
    window.delay = delay;
    shouldBeTrue("delay.numberOfInputs === 1");
    shouldBeTrue("delay.numberOfOutputs === 1");
    shouldBeTrue("delay.delayTime.defaultValue === 0.0");
    shouldBeTrue("delay.delayTime.minValue === 0.0");
    shouldBeTrue("delay.delayTime.maxValue === 1.0");
    shouldBeTrue("delay.delayTime.value === 0.0");

    delay.delayTime.value = delayTimeSeconds;
    shouldBeTrue("delay.delayTime.value === 0.5");

    bufferSource.connect(delay);
    delay.connect(context.destination);
    bufferSource.noteOn(0);
    
    context.oncomplete = checkDelayedResult(toneBuffer);
    context.startRendering();
}

runTest();

</script>

<script src="../fast/js/resources/js-test-post.js"></script>
</body>
</html>