| <!doctype html> |
| <meta charset=utf-8> |
| <meta name="timeout" content="long"> |
| <title></title> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <script src="RTCPeerConnection-helper.js"></script> |
| <script> |
| 'use strict'; |
| |
| // A generous testing duration that will not time out on bots. |
| const kEncodeDurationMs = 10000; |
| |
| // The crash this test aims to repro was easy to reproduce using a normal |
| // getUserMedia() track when running the browser normally, e.g. by navigating |
| // to https://jsfiddle.net/henbos/fc7gk3ve/11/. But for some reason, the fake |
| // tracks returned by getUserMedia() when inside this testing environment had |
| // a much harder time with reproducibility. |
| // |
| // By creating a high FPS canvas capture track we are able to repro reliably |
| // in this WPT environment as well. |
| function whiteNoise(width, height) { |
| const canvas = |
| Object.assign(document.createElement('canvas'), {width, height}); |
| const ctx = canvas.getContext('2d'); |
| ctx.fillRect(0, 0, width, height); |
| const p = ctx.getImageData(0, 0, width, height); |
| requestAnimationFrame(function draw () { |
| for (let i = 0; i < p.data.length; i++) { |
| const color = Math.random() * 255; |
| p.data[i++] = color; |
| p.data[i++] = color; |
| p.data[i++] = color; |
| } |
| ctx.putImageData(p, 0, 0); |
| requestAnimationFrame(draw); |
| }); |
| return canvas.captureStream(); |
| } |
| |
| promise_test(async t => { |
| const pc1 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc1.close()); |
| const pc2 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc2.close()); |
| |
| const stream = whiteNoise(640, 480); |
| const [track] = stream.getTracks(); |
| const t1 = pc1.addTransceiver("video", {direction:"sendonly"}); |
| const t2 = pc1.addTransceiver("video", {direction:"sendonly"}); |
| await t1.sender.replaceTrack(track); |
| await t2.sender.replaceTrack(track); |
| |
| exchangeIceCandidates(pc1, pc2); |
| await pc1.setLocalDescription(); |
| await pc2.setRemoteDescription(pc1.localDescription); |
| await pc2.setLocalDescription(); |
| await pc1.setRemoteDescription(pc2.localDescription); |
| |
| // In Chromium, each sender instantiates a VideoStreamEncoder during |
| // negotiation. This test reproduces https://crbug.com/webrtc/11485 where a |
| // race causes a crash when multiple VideoStreamEncoders are encoding the |
| // same MediaStreamTrack. |
| await new Promise(resolve => t.step_timeout(resolve, kEncodeDurationMs)); |
| }, "Two RTCRtpSenders encoding the same track"); |
| </script> |
