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<!DOCTYPE HTML>
<html>
<head>
<title>Test MediaRecorder Bitrate</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<script type="text/javascript" src="manifest.js"></script>
</head>
<body>
<pre id="test">
<script class="testbody" type="text/javascript">
var manager = new MediaTestManager;
var results = [];
/**
* Starts a test on every media recorder file included to check that
* the bitrate control works
*/
function startTest(test, token) {
manager.started(token);
runTest(test, token, 1000000);
runTest(test, token, 100000);
}
function runTest(test, token, bitrate) {
var element = document.createElement('video');
element.token = token;
element.src = test.name;
element.preload = "metadata";
element.onloadedmetadata = function () {
info("loadedmetadata");
const stream = element.mozCaptureStreamUntilEnded();
element.onloadedmetadata = null;
element.play();
const mediaRecorder = new MediaRecorder(stream, {videoBitsPerSecond: bitrate});
mediaRecorder.start();
is(mediaRecorder.state, 'recording', 'Media recorder should be recording');
is(mediaRecorder.stream, stream,
'Media recorder stream = element stream at the start of recording');
var onStopFired = false;
var onDataAvailableFired = false;
var encoded_size = 0;
mediaRecorder.onerror = function () {
ok(false, 'Unexpected onerror callback fired');
};
mediaRecorder.onwarning = function () {
ok(false, 'Unexpected onwarning callback fired');
};
// This handler verifies that only a single onstop event handler is fired.
mediaRecorder.onstop = function () {
if (onStopFired) {
ok(false, 'onstop unexpectedly fired more than once');
} else {
onStopFired = true;
// ondataavailable should always fire before onstop
if (onDataAvailableFired) {
ok(true, 'onstop fired after ondataavailable');
info("test " + test.name + " encoded@" + bitrate + "=" + encoded_size);
if (results[test.name]) {
var big, small, temp;
big = {};
big.bitrate = bitrate;
big.size = encoded_size;
small = results[test.name];
// Don't assume the order that these will finish in
if (results[test.name].bitrate > bitrate) {
temp = big;
big = small;
small = temp;
}
// Ensure there is a big enough difference in the encoded
// sizes
ok(small.size*1.25 < big.size,
test.name + ' encoded@' + big.bitrate + '=' + big.size +
' > encoded@' + small.bitrate + '=' + small.size);
manager.finished(token);
} else {
results[test.name] = {};
results[test.name].bitrate = bitrate;
results[test.name].size = encoded_size;
}
} else {
ok(false, 'onstop fired without an ondataavailable event first');
}
}
};
// This handler verifies that only a single ondataavailable event handler
// is fired with the blob generated having greater than zero size
// and a correct mime type.
mediaRecorder.ondataavailable = function (evt) {
if (onDataAvailableFired) {
ok(false, 'ondataavailable unexpectedly fired more than once');
} else {
onDataAvailableFired = true;
ok(evt instanceof BlobEvent,
'Events fired from ondataavailable should be BlobEvent');
is(evt.type, 'dataavailable',
'Event type should dataavailable');
ok(evt.data.size > 0,
'Blob data received should be greater than zero');
encoded_size = evt.data.size;
// onstop should not have fired before ondataavailable
if (onStopFired) {
ok(false, 'ondataavailable unexpectedly fired later than onstop');
manager.finished(token);
}
}
};
};
}
manager.runTests(gMediaRecorderVideoTests, startTest);
</script>
</pre>
</body>
</html>
|
