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<!doctype html>
<html>
<head>
<script src="../resources/js-test.js"></script>
<script src="resources/compatibility.js"></script>
<script src="resources/audio-testing.js"></script>
<title>OfflineAudioContext.startRendering Promise with oncomplete</title>
</head>
<body>
<script>
description("Test OfflineAudioContext.startRendering Promise with oncomplete");
var context;
var promise;
var renderedData;
var promiseData;
var sampleRate = 48000;
var renderSeconds = 1;
var renderFrames = sampleRate * renderSeconds;
var contextChannels = 2;
function compareData() {
// The spec implies that the same buffer is returned by both oncomplete and the promise.
// Check that they are identical.
if (renderedData === promiseData) {
testPassed("AudioBuffer returned by oncomplete and promise are identical");
} else {
testFailed("AudioBuffer returned by oncomplete and promise are NOT identical");
}
finishJSTest();
}
function checkResult (event) {
renderedData = event.renderedBuffer;
promise.then(function (result) {
promiseData = result;
compareData();
});
}
// Create an offline context and verify that both the oncomplete and promise are returned with
// the same stuff.
function runTest() {
window.jsTestIsAsync = true;
context = new OfflineAudioContext(contextChannels, renderFrames, sampleRate);
var buffer = context.createBuffer(contextChannels, renderFrames, sampleRate);
for (var k = 0; k < renderFrames; ++k) {
buffer.getChannelData(0)[k] = 1;
buffer.getChannelData(1)[k] = 2;
}
var source = context.createBufferSource();
source.buffer = buffer;
source.connect(context.destination);
source.start();
context.oncomplete = checkResult;
promise = context.startRendering();
}
runTest();
successfullyParsed = true;
</script>
</body>
</html>
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