| <!doctype html> |
| <html> |
| <head> |
| <title>A disabled video track is rendered as blackness</title> |
| <link rel="author" title="Dominique Hazael-Massieux" href="mailto:dom@w3.org"/> |
| <link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#introduction"> |
| <link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#mediastreams-as-media-elements"> |
| </head> |
| <body> |
| <p class="instructions">When prompted, accept to share your video stream.</p> |
| <h1 class="instructions">Description</h1> |
| <p class="instructions">This test checks that a disabled video track in a |
| MediaStream is rendered as blackness.</p> |
| <video id="vid"></video> |
| |
| <div id='log'></div> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <script> |
| var vid = document.getElementById("vid"); |
| var cv = document.createElement("canvas"); |
| var t = async_test("Tests that a disabled video track in a MediaStream is rendered as blackness"); |
| t.step(function() { |
| navigator.mediaDevices.getUserMedia({video: true}) |
| .then(t.step_func(function (stream) { |
| if (stream.getVideoTracks()[0].enabled) { |
| stream.getVideoTracks()[0].enabled = false; |
| } |
| |
| var testOnceLoadeddata = t.step_func(function() { |
| vid.removeEventListener("loadeddata", testOnceLoadeddata, false); |
| cv.width = vid.offsetWidth; |
| cv.height = vid.offsetHeight; |
| var ctx = cv.getContext("2d"); |
| ctx.drawImage(vid,0,0); |
| var imageData = ctx.getImageData(0, 0, cv.width, cv.height); |
| for (var i = 0; i < imageData.data.length; i+=4) { |
| assert_equals(imageData.data[i], 0, "No red component in pixel #" + i); |
| assert_equals(imageData.data[i + 1], 0, "No green component in pixel #" + i); |
| assert_equals(imageData.data[i + 2], 0, "No blue component in pixel #" + i); |
| assert_equals(imageData.data[i + 3], 255, "No transparency in pixel #" + i); |
| } |
| t.done(); |
| }); |
| |
| vid.srcObject = stream; |
| vid.play(); |
| vid.addEventListener("loadeddata", testOnceLoadeddata, false); |
| })); |
| }); |
| </script> |
| </body> |
| </html> |
