285 lines
11 KiB
HTML
285 lines
11 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>MediaStream Insertable Streams - Video</title>
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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="/webrtc/RTCPeerConnection-helper.js"></script>
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</head>
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<body>
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<p class="instructions">When prompted, use the accept button to give permission to use your audio and video devices.</p>
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<h1 class="instructions">Description</h1>
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<p class="instructions">This test checks that generating video MediaStreamTracks works as expected.</p>
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<script>
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const pixelColour = [50, 100, 150, 255];
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const height = 240;
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const width = 320;
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function makeVideoFrame(timestamp) {
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const canvas = new OffscreenCanvas(width, height);
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const ctx = canvas.getContext('2d', {alpha: false});
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ctx.fillStyle = `rgba(${pixelColour.join()})`;
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ctx.fillRect(0, 0, width, height);
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return new VideoFrame(canvas, {timestamp, alpha: 'discard'});
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}
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async function getVideoFrame() {
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const stream = await getNoiseStream({video: true});
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const input_track = stream.getTracks()[0];
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const processor = new MediaStreamTrackProcessor(input_track);
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const reader = processor.readable.getReader();
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const result = await reader.read();
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input_track.stop();
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return result.value;
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}
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function assertPixel(t, bytes, expected, epsilon = 5) {
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for (let i = 0; i < bytes.length; i++) {
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t.step(() => {
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assert_less_than(Math.abs(bytes[i] - expected[i]), epsilon, "Mismatched pixel");
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});
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}
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}
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async function initiateSingleTrackCall(t, track, output) {
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const caller = new RTCPeerConnection();
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t.add_cleanup(() => caller.close());
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const callee = new RTCPeerConnection();
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t.add_cleanup(() => callee.close());
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caller.addTrack(track);
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t.add_cleanup(() => track.stop());
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exchangeIceCandidates(caller, callee);
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// Wait for the first track.
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const e = await exchangeOfferAndListenToOntrack(t, caller, callee);
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output.srcObject = new MediaStream([e.track]);
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// Exchange answer.
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await exchangeAnswer(caller, callee);
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await waitForConnectionStateChange(callee, ['connected']);
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}
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promise_test(async t => {
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const videoFrame = await getVideoFrame();
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const originalWidth = videoFrame.displayWidth;
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const originalHeight = videoFrame.displayHeight;
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const originalTimestamp = videoFrame.timestamp;
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const generator = new MediaStreamTrackGenerator({kind: 'video'});
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t.add_cleanup(() => generator.stop());
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// Use a MediaStreamTrackProcessor as a sink for |generator| to verify
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// that |processor| actually forwards the frames written to its writable
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// field.
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const processor = new MediaStreamTrackProcessor(generator);
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const reader = processor.readable.getReader();
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const readerPromise = new Promise(async resolve => {
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const result = await reader.read();
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assert_equals(result.value.displayWidth, originalWidth);
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assert_equals(result.value.displayHeight, originalHeight);
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assert_equals(result.value.timestamp, originalTimestamp);
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resolve();
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});
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generator.writable.getWriter().write(videoFrame);
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return readerPromise;
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}, 'Tests that MediaStreamTrackGenerator forwards frames to sink');
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promise_test(async t => {
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const videoFrame = makeVideoFrame(1);
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const originalWidth = videoFrame.displayWidth;
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const originalHeight = videoFrame.displayHeight;
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const generator = new MediaStreamTrackGenerator({ kind: 'video' });
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t.add_cleanup(() => generator.stop());
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const video = document.createElement("video");
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video.autoplay = true;
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video.width = 320;
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video.height = 240;
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video.srcObject = new MediaStream([generator]);
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video.play();
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// Wait for the video element to be connected to the generator and
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// generate the frame.
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video.onloadstart = () => generator.writable.getWriter().write(videoFrame);
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return new Promise((resolve)=> {
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video.ontimeupdate = t.step_func(() => {
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const canvas = document.createElement("canvas");
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canvas.width = originalWidth;
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canvas.height = originalHeight;
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const context = canvas.getContext('2d');
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context.drawImage(video, 0, 0);
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// Pick a pixel in the centre of the video and check that it has the colour of the frame provided.
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const pixel = context.getImageData(videoFrame.displayWidth/2, videoFrame.displayHeight/2, 1, 1);
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assertPixel(t, pixel.data, pixelColour);
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resolve();
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});
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});
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}, 'Tests that frames are actually rendered correctly in a stream used for a video element.');
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promise_test(async t => {
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const generator = new MediaStreamTrackGenerator({kind: 'video'});
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t.add_cleanup(() => generator.stop());
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// Write frames for the duration of the test.
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const writer = generator.writable.getWriter();
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let timestamp = 0;
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const intervalId = setInterval(
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t.step_func(async () => {
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if (generator.readyState === 'live') {
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timestamp++;
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await writer.write(makeVideoFrame(timestamp));
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}
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}),
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40);
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t.add_cleanup(() => clearInterval(intervalId));
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const video = document.createElement('video');
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video.autoplay = true;
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video.width = width;
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video.height = height;
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video.muted = true;
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await initiateSingleTrackCall(t, generator, video);
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return new Promise(resolve => {
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video.ontimeupdate = t.step_func(() => {
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const canvas = document.createElement('canvas');
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canvas.width = width;
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canvas.height = height;
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const context = canvas.getContext('2d');
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context.drawImage(video, 0, 0);
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// Pick a pixel in the centre of the video and check that it has the
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// colour of the frame provided.
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const pixel = context.getImageData(width / 2, height / 2, 1, 1);
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// Encoding/decoding can add noise, so increase the threshhold to 8.
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assertPixel(t, pixel.data, pixelColour, 8);
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resolve();
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});
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});
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}, 'Tests that frames are actually rendered correctly in a stream sent over a peer connection.');
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promise_test(async t => {
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const generator = new MediaStreamTrackGenerator({kind: 'video'});
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t.add_cleanup(() => generator.stop());
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const inputCanvas = new OffscreenCanvas(width, height);
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const inputContext = inputCanvas.getContext('2d', {alpha: false});
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// draw four quadrants
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const colorUL = [255, 0, 0, 255];
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inputContext.fillStyle = `rgba(${colorUL.join()})`;
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inputContext.fillRect(0, 0, width / 2, height / 2);
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const colorUR = [255, 255, 0, 255];
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inputContext.fillStyle = `rgba(${colorUR.join()})`;
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inputContext.fillRect(width / 2, 0, width / 2, height / 2);
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const colorLL = [0, 255, 0, 255];
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inputContext.fillStyle = `rgba(${colorLL.join()})`;
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inputContext.fillRect(0, height / 2, width / 2, height / 2);
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const colorLR = [0, 255, 255, 255];
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inputContext.fillStyle = `rgba(${colorLR.join()})`;
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inputContext.fillRect(width / 2, height / 2, width / 2, height / 2);
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// Write frames for the duration of the test.
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const writer = generator.writable.getWriter();
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let timestamp = 0;
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const intervalId = setInterval(
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t.step_func(async () => {
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if (generator.readyState === 'live') {
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timestamp++;
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await writer.write(new VideoFrame(
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inputCanvas, {timestamp: timestamp, alpha: 'discard'}));
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}
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}),
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40);
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t.add_cleanup(() => clearInterval(intervalId));
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const caller = new RTCPeerConnection();
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t.add_cleanup(() => caller.close());
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const callee = new RTCPeerConnection();
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t.add_cleanup(() => callee.close());
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const sender = caller.addTrack(generator);
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exchangeIceCandidates(caller, callee);
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// Wait for the first track.
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const e = await exchangeOfferAndListenToOntrack(t, caller, callee);
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// Exchange answer.
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await exchangeAnswer(caller, callee);
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await waitForConnectionStateChange(callee, ['connected']);
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const params = sender.getParameters();
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params.encodings.forEach(e => e.scaleResolutionDownBy = 2);
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sender.setParameters(params);
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const processor = new MediaStreamTrackProcessor(e.track);
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const reader = processor.readable.getReader();
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// The first frame may not have had scaleResolutionDownBy applied
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const numTries = 5;
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for (let i = 1; i <= numTries; i++) {
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const {value: outputFrame} = await reader.read();
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if (outputFrame.displayWidth !== width / 2) {
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assert_less_than(i, numTries, `First ${numTries} frames were the wrong size.`);
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outputFrame.close();
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continue;
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}
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assert_equals(outputFrame.displayWidth, width / 2);
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assert_equals(outputFrame.displayHeight, height / 2);
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const outputCanvas = new OffscreenCanvas(width / 2, height / 2);
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const outputContext = outputCanvas.getContext('2d', {alpha: false});
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outputContext.drawImage(outputFrame, 0, 0);
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outputFrame.close();
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// Check the four quadrants
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const pixelUL = outputContext.getImageData(width / 8, height / 8, 1, 1);
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assertPixel(t, pixelUL.data, colorUL);
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const pixelUR =
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outputContext.getImageData(width * 3 / 8, height / 8, 1, 1);
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assertPixel(t, pixelUR.data, colorUR);
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const pixelLL =
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outputContext.getImageData(width / 8, height * 3 / 8, 1, 1);
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assertPixel(t, pixelLL.data, colorLL);
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const pixelLR =
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outputContext.getImageData(width * 3 / 8, height * 3 / 8, 1, 1);
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assertPixel(t, pixelLR.data, colorLR);
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break;
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}
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}, 'Tests that frames are sent correctly with RTCRtpEncodingParameters.scaleResolutionDownBy.');
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promise_test(async t => {
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const generator = new MediaStreamTrackGenerator("video");
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t.add_cleanup(() => generator.stop());
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const writer = generator.writable.getWriter();
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const frame = makeVideoFrame(1);
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await writer.write(frame);
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assert_equals(generator.kind, "video");
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assert_equals(generator.readyState, "live");
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}, "Tests that creating a Video MediaStreamTrackGenerator works as expected");
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promise_test(async t => {
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const generator = new MediaStreamTrackGenerator("video");
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t.add_cleanup(() => generator.stop());
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const writer = generator.writable.getWriter();
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const frame = makeVideoFrame(1);
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await writer.write(frame);
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assert_throws_dom("InvalidStateError", () => frame.clone(), "VideoFrame wasn't destroyed on write.");
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}, "Tests that VideoFrames are destroyed on write.");
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promise_test(async t => {
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const generator = new MediaStreamTrackGenerator("audio");
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t.add_cleanup(() => generator.stop());
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const writer = generator.writable.getWriter();
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const frame = makeVideoFrame(1);
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assert_throws_js(TypeError, writer.write(frame));
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}, "Mismatched frame and generator kind throws on write.");
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</script>
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</body>
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</html>
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