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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <head> |
| 4 <title>Media Capture from DOM Elements (video/audio) Browser Test</title> |
| 5 </head> |
| 6 <body> |
| 7 <div> Capture and playback from video/audio elements.</div> |
| 8 </body> |
| 9 <script type="text/javascript" src="webrtc_test_utilities.js"></script> |
| 10 <script> |
| 11 |
| 12 'use strict'; |
| 13 |
| 14 const NUMBER_OF_EVENTS_TO_RECORD = 15; |
| 15 const ON_DATA_AVAILABLE_THRESHOLD = 10; |
| 16 |
| 17 function checkForRedraw(canvas, drawCounter, drawFunction) { |
| 18 if (++drawCounter <= NUMBER_OF_EVENTS_TO_RECORD) |
| 19 requestAnimationFrame(function(){drawFunction(canvas, drawCounter)}) |
| 20 } |
| 21 |
| 22 function draw2d(canvas, drawCounter) { |
| 23 var ctx = canvas.getContext('2d'); |
| 24 ctx.fillStyle = 'green'; |
| 25 ctx.fillRect(0, 0, canvas.width, canvas.height); |
| 26 checkForRedraw(canvas, drawCounter, draw2d); |
| 27 }; |
| 28 |
| 29 function drawWebGL(canvas, drawCounter) { |
| 30 var gl = canvas.getContext('webgl'); |
| 31 gl.clearColor(0, 1, 0, 1); |
| 32 gl.clear(gl.COLOR_BUFFER_BIT); |
| 33 checkForRedraw(canvas, drawCounter, drawWebGL); |
| 34 }; |
| 35 |
| 36 function testCanvasCapture(drawFunction) { |
| 37 var canvas = document.createElement('canvas'); |
| 38 document.body.appendChild(canvas); |
| 39 |
| 40 var stream = canvas.captureStream(); |
| 41 assertTrue(stream, 'Error creating MediaStream'); |
| 42 assertEquals(1, stream.getVideoTracks().length); |
| 43 assertEquals(0, stream.getAudioTracks().length); |
| 44 |
| 45 var recorded_events = 0; |
| 46 const recorder = new MediaRecorder(stream); |
| 47 assertTrue(recorder, 'Error creating recorder out of the MediaStream'); |
| 48 |
| 49 recorder.ondataavailable = function(event) { |
| 50 if (event.data.size > ON_DATA_AVAILABLE_THRESHOLD) { |
| 51 if (++recorded_events == NUMBER_OF_EVENTS_TO_RECORD) |
| 52 reportTestSuccess(); |
| 53 } |
| 54 }; |
| 55 |
| 56 recorder.start(0); |
| 57 drawFunction(canvas, 0); |
| 58 } |
| 59 |
| 60 </script> |
| 61 </body> |
| 62 </html> |
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Chromium Code Reviews
Issue 2658973002:
Add content_browsertest for checking canvas capture frame rate (Closed)
