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+<!DOCTYPE HTML>
+<html>
+<meta charset="utf-8">
+<head>
+ <title>Test MediaStreamTrackAudioSourceNode processing is correct</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <script type="text/javascript" src="webaudio.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+function createBuffer(context) {
+ let buffer = context.createBuffer(2, 2048, context.sampleRate);
+ for (let i = 0; i < 2048; ++i) {
+ buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
+ buffer.getChannelData(1)[i] = -buffer.getChannelData(0)[i];
+ }
+ return buffer;
+}
+
+let gTest = {
+ length: 2048,
+ skipOfflineContextTests: true,
+ createGraph(context) {
+ let sourceGraph = new AudioContext();
+ let source = sourceGraph.createBufferSource();
+ source.buffer = createBuffer(context);
+ let dest = sourceGraph.createMediaStreamDestination();
+ source.connect(dest);
+
+ // Extract first audio track from dest.stream
+ let track = dest.stream.getAudioTracks()[0];
+
+ source.start(0);
+
+ let mediaStreamTrackSource = new MediaStreamTrackAudioSourceNode(context, { mediaStreamTrack: track });
+ // channelCount and channelCountMode should have no effect
+ mediaStreamTrackSource.channelCount = 1;
+ mediaStreamTrackSource.channelCountMode = "explicit";
+ return mediaStreamTrackSource;
+ },
+ createExpectedBuffers(context) {
+ return createBuffer(context);
+ },
+};
+
+runTest();
+
+</script>
+</pre>
+</body>
+</html>