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<!DOCTYPE HTML>
<html>
<head>
<title>Test that a MediaStream captured from one element plays back in another</title>
<script type="text/javascript" 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">
SimpleTest.waitForExplicitFinish();
// longer timeout for slow platforms
if (isSlowPlatform()) {
SimpleTest.requestLongerTimeout(3);
SimpleTest.requestCompleteLog();
}
function checkDrawImage(vout) {
var canvas = document.createElement("canvas");
var ctx = canvas.getContext("2d");
ctx.drawImage(vout, 0, 0);
var imgData = ctx.getImageData(0, 0, 1, 1);
is(imgData.data[3], 255, "Check video frame pixel has been drawn");
}
function isGreaterThanOrEqualEps(a, b, msg) {
ok(a >= b - 0.01,
"Got " + a + ", expected at least " + b + "; " + msg);
}
function startTest(test) {
var v = document.createElement('video');
var vout = document.createElement('video');
v.src = test.name;
var stream;
var checkEnded = function() {
is(stream.currentTime, vout.currentTime, test.name + " stream final currentTime");
if (test.duration) {
isGreaterThanOrEqualEps(vout.currentTime, test.duration,
test.name + " current time at end");
}
is(vout.readyState, vout.HAVE_CURRENT_DATA, test.name + " checking readyState");
ok(vout.ended, test.name + " checking playback has ended");
if (test.type.match(/^video/)) {
checkDrawImage(vout);
}
vout.parentNode.removeChild(vout);
removeNodeAndSource(v);
SimpleTest.finish();
};
vout.addEventListener("ended", checkEnded, false);
document.body.appendChild(vout);
var onloadedmetadata = function (ev) {
stream = v.mozCaptureStreamUntilEnded();
is(stream.currentTime, 0, test.name + " stream initial currentTime");
vout.srcObject = stream;
is(vout.srcObject, stream, test.name + " set output element .srcObject correctly");
v.play();
vout.play();
}
v.preload = 'metadata';
v.addEventListener('loadedmetadata', onloadedmetadata, false);
// Log events for debugging.
var events = ["suspend", "play", "canplay", "canplaythrough", "loadstart", "loadedmetadata",
"loadeddata", "playing", "ended", "error", "stalled", "emptied", "abort",
"waiting", "pause"];
function logEvent(e) {
Log(e.target.name, "got " + e.type);
}
events.forEach(function(e) {
v.addEventListener(e, logEvent, false);
vout.addEventListener(e, logEvent, false);
});
}
// We only test one playable video because for some of the audio files
// --- small-shot.mp3.mp4 and small-shot.m4a --- GStreamer doesn't decode
// as much data as indicated by the duration, causing this test to fail on
// Linux. See bug 1084185.
var testVideo = getPlayableVideo(gSmallTests);
if (testVideo) {
startTest(testVideo);
} else {
todo(false, "No playable video");
}
</script>
</pre>
</body>
</html>
|
