test_LiveSeekable.html

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<head>

  <title>MSE: live seekable range</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <script type="text/javascript" src="mediasource.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

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<pre id="test">

<script class="testbody" type="text/javascript">

SimpleTest.waitForExplicitFinish();

runWithMSE(async (ms, v) => {

  await once(ms, "sourceopen");

  const sb = ms.addSourceBuffer("video/webm");

  // Load data with a +2 offset so that we can distinguish buffered range start

  // and seekable range start.

  sb.timestampOffset = 2;

  const p = once(v, "loadedmetadata");

  await fetchAndLoad(sb, "seek", [""], ".webm");

  await p;

  ms.duration = Infinity;

  sb.abort();

  is(sb.buffered.length, 1, "continuous buffered range");

  is(sb.buffered.start(0), 2, "buffered range start at timestamp offset");

  is(sb.buffered.end(0), 6.001, "buffered range end at original duration + timestamp offset");

  is(v.seekable.length, 1, "continuous seekable range");

  is(v.seekable.start(0), 0, "seekable range start at 0");

  is(v.seekable.end(0), sb.buffered.end(0), "seekable range end at buffered end");

  // LiveSeekableRange.start < buffered.start

  ms.setLiveSeekableRange(1, 5);

  is(v.seekable.length, 1, "continuous seekable range");

  is(v.seekable.start(0), 1, "seekable range start at live range start");

  is(v.seekable.end(0), sb.buffered.end(0), "seekable range end at buffered end");

  ms.clearLiveSeekableRange();

  is(v.seekable.length, 1, "continuous seekable range");

  is(v.seekable.start(0), 0, "seekable range start at 0");

  is(v.seekable.end(0), sb.buffered.end(0), "seekable range end at buffered end");

  // LiveSeekableRange.end > buffered.end

  ms.setLiveSeekableRange(1, 8);

  is(v.seekable.start(0), 1, "seekable range start at live range start");

  is(v.seekable.end(0), 8, "seekable range end at live range end");

  // LiveSeekableRange.start > buffered.start

  // LiveSeekableRange.end < buffered.end

  ms.setLiveSeekableRange(3, 5);

  is(v.seekable.start(0), sb.buffered.start(0), "seekable range start at buffered start");

  is(v.seekable.end(0), sb.buffered.end(0), "seekable range end at live range end");

  // LiveSeekableRange.start > buffered.end

  ms.setLiveSeekableRange(8, 10);

  is(v.seekable.start(0), sb.buffered.start(0), "seekable range start at buffered start");

  is(v.seekable.end(0), 10, "seekable range end at live range end");

  // LiveSeekableRange.end < buffered.start

  ms.setLiveSeekableRange(0, 2);

  is(v.seekable.start(0), 0, "seekable range start at live range start");

  is(v.seekable.end(0), sb.buffered.end(0), "seekable range end at buffered end");

  must_throw(() => ms.setLiveSeekableRange(2, 0),

             "must thow if start > end",

             "TypeError");

  must_throw(() => ms.setLiveSeekableRange(2, 0),

             "must thow if start > end",

             "TypeError");

  ms.setLiveSeekableRange(0, 1e300);

  is(v.seekable.start(0), 0, "seekable range start at live range start");

  is(v.seekable.end(0), 1e300, "seekable range end at specified time");

  SimpleTest.finish();

});

</script>

</pre>

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