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1 <!doctype html> | |
2 <html> | |
3 <head> | |
4 <title>A disabled video track is rendered as blackness</title> | |
5 <link rel="author" title="Dominique Hazael-Massieux" href="mailto:dom@w3.org"/> | |
6 <link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#in
troduction"> | |
7 <link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#me
diastreams-as-media-elements"> | |
8 </head> | |
9 <body> | |
10 <p class="instructions">When prompted, accept to share your video stream.</p> | |
11 <h1 class="instructions">Description</h1> | |
12 <p class="instructions">This test checks that a disabled video track in a | |
13 MediaStream is rendered as blackness.</p> | |
14 <video id="vid"></video> | |
15 | |
16 <div id='log'></div> | |
17 <script src=/resources/testharness.js></script> | |
18 <script src=/resources/testharnessreport.js></script> | |
19 <script src="/common/vendor-prefix.js" data-prefixed-objects='[{"ancestors":["na
vigator"], "name":"getUserMedia"}]' data-prefixed-prototypes='[{"ancestors":["HT
MLMediaElement"],"name":"srcObject"}]'></script> | |
20 <script> | |
21 var vid = document.getElementById("vid"); | |
22 var cv = document.createElement("canvas"); | |
23 var t = async_test("Tests that a disabled video track in a MediaStream is render
ed as blackness", {timeout: 10000}); | |
24 t.step(function() { | |
25 navigator.getUserMedia( | |
26 {video: true}, | |
27 t.step_func(function (stream) { | |
28 var testOncePlaying = function() { | |
29 if (stream.getVideoTracks()[0].enabled) { | |
30 stream.getVideoTracks()[0].enabled = false; | |
31 return; | |
32 } | |
33 | |
34 vid.removeEventListener("timeupdate", testOncePlaying, false); | |
35 cv.width = vid.offsetWidth; | |
36 cv.height = vid.offsetHeight; | |
37 var ctx = cv.getContext("2d"); | |
38 ctx.drawImage(vid,0,0); | |
39 var imageData = ctx.getImageData(0, 0, cv.width, cv.height); | |
40 for (var i = 0; i < imageData.data.length; i+=4) { | |
41 assert_equals(imageData.data[i], 0, "No red component in pixel #" +
i); | |
42 assert_equals(imageData.data[i + 1], 0, "No green component in pixel
#" + i); | |
43 assert_equals(imageData.data[i + 2], 0, "No blue component in pixel
#" + i); | |
44 assert_equals(imageData.data[i + 3], 255, "No transparency in pixel
#" + i); | |
45 } | |
46 t.done(); | |
47 } | |
48 vid.srcObject = stream; | |
49 vid.play(); | |
50 vid.addEventListener("timeupdate", t.step_func(testOncePlaying), false); | |
51 }), | |
52 function(error) {}); | |
53 }); | |
54 </script> | |
55 </body> | |
56 </html> | |
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