зеркало из https://github.com/mozilla/gecko-dev.git
71 строка
1.5 KiB
HTML
71 строка
1.5 KiB
HTML
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<!DOCTYPE HTML>
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<html>
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<meta charset="utf-8">
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<head>
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<title>Test MediaElementAudioSourceNode before "loadedmetadata"</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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</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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var video = document.createElement("video");
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function test() {
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video.src = "audiovideo.mp4";
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var context = new AudioContext();
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var complete = false;
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video.onended = () => {
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if (complete) {
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return;
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}
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complete = true;
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ok(false, "Video ended without any samples seen");
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SimpleTest.finish();
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};
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video.ontimeupdate = () => {
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info("Timeupdate: " + video.currentTime);
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};
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var node = context.createMediaElementSource(video);
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var sp = context.createScriptProcessor(2048, 1);
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node.connect(sp);
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// This test ensures we receive some nonzero samples when we capture to
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// WebAudio before "loadedmetadata".
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sp.onaudioprocess = e => {
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if (complete) {
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return;
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}
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var buf = e.inputBuffer.getChannelData(0);
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for (var i = 0; i < buf.length; ++i) {
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if (buf[i] != 0) {
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complete = true;
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ok(true, "Got non-zero samples");
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SimpleTest.finish();
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return;
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}
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}
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};
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video.play();
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}
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if (video.canPlayType("video/mp4")) {
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test();
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} else {
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ok(true, "MP4 not supported. Skipping.");
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SimpleTest.finish();
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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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