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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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