Add WPT for applyConstraints() for remote video tracks.

Bug: 899789 Change-Id: If7e01be191d8b01f630b69a5f25c2f0929b617fd Reviewed-on: https://chromium-review.googlesource.com/c/1409199 Reviewed-by: Henrik Boström <[email protected]> Commit-Queue: Marina Ciocea <[email protected]> Cr-Commit-Position: refs/heads/master@{#622462}
feiyue1206 · Jan 14, 2019 · 4fa0871 · 4fa0871
1 parent 0e9488a
commit 4fa0871
Showing 1 changed file with 85 additions and 0 deletions.
diff --git a/...nk/web_tests/fast/peerconnection/RTCPeerConnection-applyConstraints-remoteVideoTrack.html b/...nk/web_tests/fast/peerconnection/RTCPeerConnection-applyConstraints-remoteVideoTrack.html
@@ -0,0 +1,85 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>RTCPeerConnection-ontrack</title>
+<script src="../../resources/testharness.js"></script>
+<script src="../../resources/testharnessreport.js"></script>
+</head>
+<body>
+<script>
+
+const FRAME_RATE_ERROR = 0.5;
+const SETTINGS_CHANGE_RATE = 0.8;
+
+promise_test(async t => {
+  const localPc = new RTCPeerConnection();
+  t.add_cleanup(() => localPc.close());
+  const remotePc = new RTCPeerConnection();
+  t.add_cleanup(() => remotePc.close());
+
+  const localStream = await navigator.mediaDevices.getUserMedia({video:true});
+  const [localTrack] = localStream.getTracks();
+  t.add_cleanup(() => localTrack.stop());
+  let remoteTrack = null;
+  let remoteStream = null;
+  localPc.addTrack(localTrack, localStream);
+  remotePc.ontrack = e => {
+    remoteTrack = e.track;
+    remoteStream = e.stream;
+  };
+
+  exchangeIceCandidates(localPc, remotePc);
+  const offer = await localPc.createOffer();
+  await localPc.setLocalDescription(offer);
+  await remotePc.setRemoteDescription(offer);
+  const answer = await remotePc.createAnswer();
+  await remotePc.setLocalDescription(answer);
+  await localPc.setRemoteDescription(answer);
+
+  // Get initial settings once remote side starts receiving frames.
+  const settings = await new Promise((resolve) => {
+    const checkFirstFrameSettings = settings => 'frameRate' in settings;
+    listenForFrame(remoteTrack, resolve, checkFirstFrameSettings);
+  });
+
+  const constraints = {
+    frameRate: settings.frameRate * SETTINGS_CHANGE_RATE,
+    width: settings.width * SETTINGS_CHANGE_RATE,
+    height: settings.height * SETTINGS_CHANGE_RATE
+  };
+  remoteTrack.applyConstraints(constraints);
+
+  // Wait for remote side to receive frames with constraints applied.
+  await new Promise((resolve) => {
+    const checkConstrainedSettings = settings =>
+        settings.frameRate - constraints.frameRate <= FRAME_RATE_ERROR &&
+        settings.width == constraints.width &&
+        settings.height == constraints.height;
+    listenForFrame(remoteTrack, resolve, checkConstrainedSettings);
+  });
+}, 'applyConstraints for remote video track.');
+
+function listenForFrame(track, resolve, checkSettings) {
+  const settings = track.getSettings();
+  if (checkSettings(settings))
+    resolve(settings);
+  setTimeout(() => listenForFrame(track, resolve, checkSettings), 0);
+}
+
+function exchangeIceCandidates(pc1, pc2) {
+  function doExchange(localPc, remotePc) {
+    localPc.addEventListener('icecandidate', event => {
+      const { candidate } = event;
+      if(candidate && remotePc.signalingState !== 'closed') {
+        remotePc.addIceCandidate(candidate);
+      }
+    });
+  }
+  doExchange(pc1, pc2);
+  doExchange(pc2, pc1);
+}
+
+</script>
+</body>
+</html>
+