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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <script src=../../resources/testharness.js></script> |
| 3 <script src=../../resources/testharnessreport.js></script> |
| 4 <body> |
| 5 <canvas id='canvas0' width=10 height=10/> |
| 6 <canvas id='canvas1' width=10 height=10/> |
| 7 </body> |
| 8 <script> |
| 9 |
| 10 // This test verifies that ImageCapture can grabFrame()s. |
| 11 |
| 12 var test = async_test(function() { |
| 13 var canvas0 = document.getElementById('canvas0'); |
| 14 var context0 = canvas0.getContext("2d"); |
| 15 context0.fillStyle = "red"; |
| 16 context0.fillRect(0, 0, 10, 10); |
| 17 |
| 18 var stream = canvas0.captureStream(); |
| 19 |
| 20 var capturer = new ImageCapture(stream.getVideoTracks()[0]); |
| 21 |
| 22 capturer.grabFrame() |
| 23 .then(bitmap => { |
| 24 assert_equals(canvas0.width, bitmap.width); |
| 25 assert_equals(canvas0.height, bitmap.height); |
| 26 |
| 27 var context1 = document.getElementById('canvas1').getContext("2d"); |
| 28 context1.drawImage(bitmap, 0, 0); |
| 29 |
| 30 var imageData0 = context0.getImageData(0, 0, 10, 10); |
| 31 var imageData1 = context1.getImageData(0, 0, 10, 10); |
| 32 |
| 33 assert_equals(imageData0.width, imageData1.width); |
| 34 assert_equals(imageData0.height, imageData1.height); |
| 35 assert_equals(imageData0.data.length, imageData1.data.length); |
| 36 for (var i = 0; i < imageData0.data.length; i++) |
| 37 assert_approx_equals(imageData0.data[i], imageData1.data[i], 5); |
| 38 |
| 39 this.done(); |
| 40 }) |
| 41 .catch(error => { |
| 42 assert_unreached('Error during grabFrame(): '+ error); |
| 43 }); |
| 44 }, 'exercises the ImageCapture API creation and grabFrame().'); |
| 45 |
| 46 </script> |
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Chromium Code Reviews
Issue 1899403002:
MediaStream Image Capture (2): Platform::ImageCaptureFrameGrabber and grabFrame() (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master