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Test Info:
<!DOCTYPE HTML>
<html>
<meta charset="utf-8">
<head>
<title>Test MediaElementAudioSourceNode before "loadedmetadata"</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test">
<script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
var video = document.createElement("video");
function test() {
video.src = "audiovideo.mp4";
var context = new AudioContext();
var complete = false;
video.onended = () => {
if (complete) {
return;
}
complete = true;
ok(false, "Video ended without any samples seen");
SimpleTest.finish();
};
video.ontimeupdate = () => {
info("Timeupdate: " + video.currentTime);
};
var node = context.createMediaElementSource(video);
var sp = context.createScriptProcessor(2048, 1);
node.connect(sp);
// This test ensures we receive some nonzero samples when we capture to
// WebAudio before "loadedmetadata".
sp.onaudioprocess = e => {
if (complete) {
return;
}
var buf = e.inputBuffer.getChannelData(0);
for (var i = 0; i < buf.length; ++i) {
if (buf[i] != 0) {
complete = true;
ok(true, "Got non-zero samples");
SimpleTest.finish();
return;
}
}
};
video.play();
}
if (video.canPlayType("video/mp4")) {
test();
} else {
ok(true, "MP4 not supported. Skipping.");
SimpleTest.finish();
}
</script>
</pre>
</body>
</html>