RTCRtpReceiver-track-settings.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /webrtc/RTCRtpReceiver-track-settings.tentative.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>RTCRtpReceiver.track.getSettings()</title>

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

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

<script src="RTCPeerConnection-helper.js"></script>

<script>

'use strict';

// Tentative pending resolution of https://github.com/w3c/mediacapture-fromelement/issues/48.

promise_test(async t => {

  if (!document.body) {

    await new Promise(r => document.addEventListener("DOMContentLoaded", r, {once: true}));

  const noiseStream = await getNoiseStream({video: true});

  const [sendTrack] = noiseStream.getTracks();

  const [canvas] = document.body.getElementsByTagName("canvas");

  const ctx = canvas.getContext("2d");

  const pc1 = new RTCPeerConnection();

  t.add_cleanup(() => pc1.close());

  const pc2 = new RTCPeerConnection();

  t.add_cleanup(() => pc2.close());

  // Send noise track.

  const sender = pc1.addTrack(sendTrack);

  const params = sender.getParameters();

  params.degradationPreference = "maintain-resolution";

  await sender.setParameters(params);

  const haveTrackEvent = new Promise(r => pc2.ontrack = r);

  exchangeIceCandidates(pc1, pc2);

  await pc1.setLocalDescription();

  await pc2.setRemoteDescription(pc1.localDescription);

  await pc2.setLocalDescription();

  await pc1.setRemoteDescription(pc2.localDescription);

  const {track: recvTrack} = await haveTrackEvent;

  assert_equals(recvTrack.getSettings().width, 0, "Receive track width setting is zero initially");

  assert_equals(recvTrack.getSettings().height, 0, "Receive track height setting is zero initially");

  // Display received track in video element for resize events.

  const destVideo = document.createElement('video');

  destVideo.autoplay = true;

  destVideo.srcObject = new MediaStream([recvTrack]);

  await new Promise(r => destVideo.onloadedmetadata = r);

  assert_equals(recvTrack.getSettings().width, canvas.width, "Receive track width setting is set after receiving data");

  assert_equals(recvTrack.getSettings().height, canvas.height, "Receive track height setting is set after receiving data");

  canvas.width = 240;

  canvas.height = 160;

  await new Promise(r => destVideo.onresize = r);

  assert_equals(recvTrack.getSettings().width, 240, "Receive track width setting is updated after resolution change");

  assert_equals(recvTrack.getSettings().height, 160, "Receive track height setting is updated after resolution change");

}, "RTCRtpReceiver.track.getSettings() contains resolution entries");

</script>