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