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92 lines
2.8 KiB
HTML
92 lines
2.8 KiB
HTML
<!doctype html>
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<html>
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<head>
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<meta charset=utf-8>
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<meta name="timeout" content="long">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/gc.js"></script>
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<script src="RTCPeerConnection-helper.js"></script>
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</head>
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<body>
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<script>
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'use strict';
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// Check that RTCPeerConnection is not collected by GC while displaying video.
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promise_test(async t => {
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const canvas = document.createElement('canvas');
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canvas.width = canvas.height = 160;
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const ctx = canvas.getContext("2d");
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ctx.fillStyle = "blue";
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const drawCanvas = () => {
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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};
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let pc1 = new RTCPeerConnection();
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let pc2 = new RTCPeerConnection();
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// Attach video to pc1.
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const [inputTrack] = canvas.captureStream().getTracks();
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pc1.addTrack(inputTrack);
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const destVideo = document.createElement('video');
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destVideo.autoplay = true;
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const onVideoChange = async () => {
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const start = performance.now();
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const width = destVideo.videoWidth;
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const height = destVideo.videoHeight;
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const resizeEvent = new Promise(r => destVideo.onresize = r);
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while (destVideo.videoWidth == width && destVideo.videoHeight == height) {
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if (performance.now() - start > 5000) {
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throw new Error("Timeout waiting for video size change");
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}
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drawCanvas();
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await Promise.race([
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resizeEvent,
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new Promise(r => requestAnimationFrame(r)),
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]);
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}
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};
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// Setup cleanup. We cannot keep references to pc1 or pc2 so do a best-effort with GC.
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t.add_cleanup(async () => {
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inputTrack.stop();
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destVideo.srcObject = null;
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await garbageCollect();
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});
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// Setup pc1->pc2.
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let haveTrackEvent = new Promise(r => pc2.ontrack = r);
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exchangeIceCandidates(pc1, pc2);
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await pc1.setLocalDescription();
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await pc2.setRemoteDescription(pc1.localDescription);
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await pc2.setLocalDescription();
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await pc1.setRemoteDescription(pc2.localDescription);
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// Display pc2 received track in video element.
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const loadedMetadata = new Promise(r => destVideo.onloadedmetadata = r);
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destVideo.srcObject = new MediaStream([(await haveTrackEvent).track]);
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// Wait for video on the other side.
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await onVideoChange();
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const color = getVideoSignal(destVideo);
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assert_not_equals(color, 0);
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// Remove RTCPeerConnection references and garbage collect.
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pc1 = null;
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pc2 = null;
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haveTrackEvent = null;
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await garbageCollect();
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// Check that a change to video input is reflected in the output, i.e., the
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// peer connections were not garbage collected.
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canvas.width = canvas.height = 240;
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ctx.fillStyle = "red";
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await onVideoChange();
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assert_not_equals(color, getVideoSignal(destVideo));
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}, "GC does not collect a peer connection pipe rendering to a video element");
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</script>
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</body>
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</html>
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