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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>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<script>
description("This test verifies whether down mixing from stereo to mono will cause assertion error.");
var sampleRate = 44100.0;
var renderLengthSeconds = 0.1;
var context;
var toneBuffer;
var bufferSource;
function createDataBuffer(context, lengthInSeconds) {
var audioBuffer = context.createBuffer(2, lengthInSeconds * sampleRate, sampleRate);
var n = audioBuffer.length;
var data0 = audioBuffer.getChannelData(0);
var data1 = audioBuffer.getChannelData(1);
for (var i = 0; i < n; ++i) {
data0[i] = 1.0;
data1[i] = 1.0;
}
return audioBuffer;
}
function testFinished() {
testPassed("Test no ASSERT error.");
finishJSTest();
}
function runTest() {
if (window.testRunner) {
testRunner.dumpAsText();
testRunner.waitUntilDone();
}
window.jsTestIsAsync = true;
// Create offline audio context, the destination is mono.
context = new OfflineAudioContext(1, sampleRate * renderLengthSeconds, sampleRate);
// Create a stereo AudioBuffer.
toneBuffer = createDataBuffer(context, renderLengthSeconds);
bufferSource = context.createBufferSource();
bufferSource.buffer = toneBuffer;
bufferSource.connect(context.destination);
bufferSource.start(0);
context.oncomplete = testFinished;
context.startRendering();
}
runTest();
</script>
</body>
</html>
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