MediaStreamTrack-contentHint.html

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This test has a WPT meta file that expects 5 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /mst-content-hint/MediaStreamTrack-contentHint.html - WPT Dashboard Interop Dashboard

<!DOCTYPE HTML>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<canvas id="canvas">

</canvas>

<script>

function createAudioTrack() {

  ac = new AudioContext();

  var osc = ac.createOscillator();

  var dest = ac.createMediaStreamDestination();

  osc.connect(dest);

  audio_track = dest.stream.getAudioTracks()[0];

  assert_equals(audio_track.kind, "audio");

  return audio_track;

function createVideoTrack() {

  canvas = document.getElementById("canvas");

  video_track = canvas.captureStream().getVideoTracks()[0];

  assert_equals(video_track.kind, "video");

  return video_track;

test(t => {

  audio_track = createAudioTrack();

  assert_equals("", audio_track.contentHint);

  video_track = createVideoTrack();

  assert_equals("", video_track.contentHint);

}, "Tracks have empty default content hint");

test(t => {

  audio_track = createAudioTrack();

  audio_track.contentHint = "speech";

  assert_equals(audio_track.contentHint, "speech");

  audio_track.contentHint = "music";

  assert_equals(audio_track.contentHint, "music");

  audio_track.contentHint = "";

  assert_equals(audio_track.contentHint, "");

}, "Accepts valid audio contentHints");

test(t => {

  audio_track = createAudioTrack();

  audio_track.contentHint = "speech";

  assert_equals(audio_track.contentHint, "speech");

  audio_track.contentHint = "motion";

  assert_equals(audio_track.contentHint, "speech",

                "Audio tracks should ignore video-only contentHints.");

  audio_track.contentHint = "bogus";

  assert_equals(audio_track.contentHint, "speech",

                "Audio tracks should ignore garbage contentHints");

}, "Audio tracks ignore invalid/video contentHints");

test(t => {

  video_track = createVideoTrack();

  video_track.contentHint = "motion";

  assert_equals(video_track.contentHint, "motion");

  video_track.contentHint = "detail";

  assert_equals(video_track.contentHint, "detail");

  video_track.contentHint = "text";

  assert_equals(video_track.contentHint, "text");

  video_track.contentHint = "";

  assert_equals(video_track.contentHint, "");

}, "Accepts valid video contentHints");

test(t => {

  video_track = createVideoTrack();

  video_track.contentHint = "motion";

  assert_equals(video_track.contentHint, "motion");

  video_track.contentHint = "speech";

  assert_equals(video_track.contentHint, "motion",

                "Video tracks should ignore audio-only contentHints.");

  video_track.contentHint = "bogus";

  assert_equals(video_track.contentHint, "motion",

                "Video tracks should ignore garbage contentHints");

}, "Video tracks ignore invalid/audio contentHints");

test(t => {

  video_track = createVideoTrack();

  video_track.contentHint = "motion";

  assert_equals(video_track.contentHint, "motion");

  // Cloning a track should preserve contentHint.

  video_track_clone = video_track.clone();

  assert_equals(video_track_clone.contentHint, "motion");

  // Changing a cloned track's contentHint should not change the original.

  video_track_clone.contentHint = "detail";

  assert_equals(video_track_clone.contentHint, "detail");

  assert_equals(video_track.contentHint, "motion");

}, "Cloned video tracks have separate contentHints");

test(t => {

  audio_track = createAudioTrack();

  audio_track.contentHint = "speech";

  assert_equals(audio_track.contentHint, "speech");

  // Cloning a track should preserve contentHint.

  audio_track_clone = audio_track.clone();

  assert_equals(audio_track_clone.contentHint, "speech");

  // Changing a cloned track's contentHint should not change the original.

  audio_track_clone.contentHint = "music";

  assert_equals(audio_track_clone.contentHint, "music");

  assert_equals(audio_track.contentHint, "speech");

}, "Cloned audio tracks have separate contentHints");

</script>