test_debug_data_helpers.html

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<!DOCTYPE html>

<html>

<head>

<title>Test the special debug APIs give expected data</title>

<script 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>

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

add_task(async function testMozRequestDebugInfo() {

  let video = document.createElement("video");

  video.src = "gizmo.mp4";

  document.body.appendChild(video);

  await video.play();

  let debugData = await SpecialPowers.wrap(video).mozRequestDebugInfo();

  // Verify various members are present and as expected.

  ok(debugData, "Should get some debug data");

  ok(debugData.decoder.hasAudio, "Should have audio");

  ok(debugData.decoder.hasVideo, "Should have video");

is(

    debugData.decoder.reader.videoWidth,

    560,

    "Video should have expected width"

);

is(

    debugData.decoder.reader.videoHeight,

    320,

    "Video should have expected height"

);

ok(

    debugData.decoder.stateMachine.mediaTime >= 0,

    "Media time should be positive"

);

  removeNodeAndSource(video);

});

add_task(async function testMozDebugReaderData() {

  let video = document.createElement("video");

  let mediaSource = new MediaSource();

  video.src = URL.createObjectURL(mediaSource);

  await once(mediaSource, "sourceopen");

  const sourceBuffer = mediaSource.addSourceBuffer("video/webm");

  let fetchResponse = await fetch("bipbop_short_vp8.webm");

  sourceBuffer.appendBuffer(await fetchResponse.arrayBuffer());

  await once(sourceBuffer, "updateend");

  mediaSource.endOfStream();

  await once(mediaSource, "sourceended");

  document.body.appendChild(video);

  await video.play();

  let debugData = await SpecialPowers.wrap(mediaSource).mozDebugReaderData();

  // Verify various members are present and as expected.

  ok(debugData, "Should get some debug data");

  is(debugData.reader.videoWidth, 400, "Video should have expected width");

  is(debugData.reader.videoHeight, 300, "Video should have expected height");

ok(

    debugData.demuxer.audioTrack.numSamples > 0,

    "Audio track should have demuxed some samples"

);

ok(

    debugData.demuxer.audioTrack.ranges.length,

    "Audio track should have some buffered range"

);

ok(

    debugData.demuxer.videoTrack.numSamples > 0,

    "Video track should have demuxed some samples"

);

ok(

    debugData.demuxer.videoTrack.ranges.length,

    "Video track should have some buffered range"

);

  removeNodeAndSource(video);

});

</script>

</head>

</html>