|  | <!doctype html> | 
|  | <html> | 
|  | <head> | 
|  | <meta charset="utf-8"> | 
|  | <script src="/resources/testharness.js"></script> | 
|  | <script src="/resources/testharnessreport.js"></script> | 
|  | <script src=/resources/testdriver.js></script> | 
|  | <script src=/resources/testdriver-vendor.js></script> | 
|  | <script src='../mediacapture-streams/permission-helper.js'></script> | 
|  | </head> | 
|  | <body> | 
|  | <video controls id="video" autoplay></video> | 
|  | <canvas id="canvas" width="640" height="480"></canvas> | 
|  | <script src ="routines.js"></script> | 
|  | <script> | 
|  | function grabFrameData(x, y, w, h) | 
|  | { | 
|  | canvas.width = video.videoWidth; | 
|  | canvas.height = video.videoHeight; | 
|  |  | 
|  | canvas.getContext('2d').drawImage(video, x, y, w, h, x, y, w, h); | 
|  | return canvas.getContext('2d').getImageData(x, y, w, h).data; | 
|  | } | 
|  |  | 
|  | function getCircleImageData() | 
|  | { | 
|  | return grabFrameData(450, 100, 150, 100); | 
|  | } | 
|  |  | 
|  | async function checkVideoIsUpdated(test, shouldBeUpdated, count, referenceData) | 
|  | { | 
|  | if (count === undefined) | 
|  | count = 0; | 
|  | else if (count >= 20) | 
|  | return Promise.reject("checkVideoIsUpdated timed out :" + shouldBeUpdated + " " + count); | 
|  |  | 
|  | if (referenceData === undefined) | 
|  | referenceData = getCircleImageData(); | 
|  |  | 
|  | await waitFor(test, 200); | 
|  | const newData = getCircleImageData(); | 
|  |  | 
|  | if (shouldBeUpdated === (JSON.stringify(referenceData) !== JSON.stringify(newData))) | 
|  | return; | 
|  |  | 
|  | await checkVideoIsUpdated(test, shouldBeUpdated, ++count, newData); | 
|  | } | 
|  |  | 
|  | promise_test(async (test) => { | 
|  | await setMediaPermission("granted", ["camera"]); | 
|  | const localStream = await navigator.mediaDevices.getUserMedia({video: true}); | 
|  | const senderTransform = new SFrameTransform({ compatibilityMode: "H264" }); | 
|  | const receiverTransform = new SFrameTransform({ compatibilityMode: "H264" }); | 
|  | await crypto.subtle.importKey("raw", new Uint8Array([143, 77, 43, 10, 72, 19, 37, 67, 236, 219, 24, 93, 26, 165, 91, 178]), "HKDF", false, ["deriveBits", "deriveKey"]).then(key => { | 
|  | senderTransform.setEncryptionKey(key); | 
|  | receiverTransform.setEncryptionKey(key); | 
|  | }); | 
|  |  | 
|  | let sender, receiver; | 
|  | const stream = await new Promise((resolve, reject) => { | 
|  | createConnections(test, (firstConnection) => { | 
|  | pc1 = firstConnection; | 
|  | sender = firstConnection.addTrack(localStream.getVideoTracks()[0], localStream); | 
|  | sender.transform = senderTransform; | 
|  | }, (secondConnection) => { | 
|  | pc2 = secondConnection; | 
|  | secondConnection.ontrack = (trackEvent) => { | 
|  | receiver = trackEvent.receiver; | 
|  | // we do not set the receiver transform here; | 
|  | resolve(trackEvent.streams[0]); | 
|  | }; | 
|  | }, { | 
|  | observeOffer : (offer) => { | 
|  | const lines = offer.sdp.split('\r\n'); | 
|  | const h264Lines = lines.filter(line => line.indexOf("a=fmtp") === 0 && line.indexOf("42e01f") !== -1); | 
|  | const baselineNumber = h264Lines[0].substring(6).split(' ')[0]; | 
|  | offer.sdp = lines.filter(line => { | 
|  | return (line.indexOf('a=fmtp') === -1 && line.indexOf('a=rtcp-fb') === -1 && line.indexOf('a=rtpmap') === -1) || line.indexOf(baselineNumber) !== -1; | 
|  | }).join('\r\n'); | 
|  | } | 
|  | }); | 
|  | test.step_timeout(() => reject("Test timed out"), 5000); | 
|  | }); | 
|  |  | 
|  | video.srcObject = stream; | 
|  | video.play(); | 
|  |  | 
|  | // We set the receiver transform here so that the decoder probably tried to decode sframe content. | 
|  | test.step_timeout(() => receiver.transform = receiverTransform, 50); | 
|  | await checkVideoIsUpdated(test, true); | 
|  | }, "video exchange with late receiver transform"); | 
|  | </script> | 
|  | </body> | 
|  | </html> |