Created
May 6, 2015 07:23
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MediaStream API (aka getUserMedia)
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| <doctype html> | |
| <html> | |
| <head> | |
| <style> | |
| #snapshotCanvas { | |
| width: 307px; | |
| height: 250px; | |
| background: rgba(255,255,255,0.5); | |
| border: 1px solid #ccc; | |
| } | |
| #output { | |
| width: 307px; | |
| height: 250px; | |
| background: rgba(255,255,255,0.5); | |
| border: 0px solid #ccc; | |
| } | |
| #screenshot-stream { | |
| width: initial; | |
| height: initial; | |
| } | |
| #screenshot { | |
| vertical-align: top; | |
| } | |
| .blur { | |
| -webkit-filter: blur(3px); | |
| -moz-filter: blur(3px); | |
| -o-filter: blur(3px); | |
| -ms-filter: blur(3px); | |
| filter: blur(3px); | |
| } | |
| .brightness { | |
| -webkit-filter: brightness(5); | |
| -moz-filter: brightness(5); | |
| -o-filter: brightness(5); | |
| -ms-filter: brightness(5); | |
| filter: brightness(5); | |
| } | |
| .contrast { | |
| -webkit-filter: contrast(8); | |
| -moz-filter: contrast(8); | |
| -o-filter: contrast(8); | |
| -ms-filter: contrast(8); | |
| filter: contrast(8); | |
| } | |
| .hue-rotate { | |
| -webkit-filter: hue-rotate(90deg); | |
| -moz-filter: hue-rotate(90deg); | |
| -o-filter: hue-rotate(90deg); | |
| -ms-filter: hue-rotate(90deg); | |
| filter: hue-rotate(90deg); | |
| } | |
| .hue-rotate2 { | |
| -webkit-filter: hue-rotate(180deg); | |
| -moz-filter: hue-rotate(180deg); | |
| -o-filter: hue-rotate(180deg); | |
| -ms-filter: hue-rotate(180deg); | |
| filter: hue-rotate(180deg); | |
| } | |
| .hue-rotate3 { | |
| -webkit-filter: hue-rotate(270deg); | |
| -moz-filter: hue-rotate(270deg); | |
| -o-filter: hue-rotate(270deg); | |
| -ms-filter: hue-rotate(270deg); | |
| filter: hue-rotate(270deg); | |
| } | |
| .saturate { | |
| -webkit-filter: saturate(10); | |
| -moz-filter: saturate(10); | |
| -o-filter: saturate(10); | |
| -ms-filter: saturate(10); | |
| filter: saturate(10); | |
| } | |
| .grayscale { | |
| -webkit-filter: grayscale(1); | |
| -moz-filter: grayscale(1); | |
| -o-filter: grayscale(1); | |
| -ms-filter: grayscale(1); | |
| filter: grayscale(1); | |
| } | |
| .sepia { | |
| -webkit-filter: sepia(1); | |
| -moz-filter: sepia(1); | |
| -o-filter: sepia(1); | |
| -ms-filter: sepia(1); | |
| filter: sepia(1); | |
| } | |
| .invert { | |
| -webkit-filter: invert(1); | |
| -moz-filter: invert(1) | |
| -o-filter: invert(1) | |
| -ms-filter: invert(1) | |
| filter: invert(1) | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <video id="output" width="200" height="200" autoplay>Put your fallback message here.</video> | |
| <canvas id="snapshotCanvas" width="200" height="200"></canvas><p> | |
| <button id="startVideoCapture">Start Capture</button> | |
| <button id="stopVideoCapture">Stop Capture</button> | |
| <button id="takeSnapshot">Take snapshot</button> | |
| <script> | |
| var n = navigator, is_webkit = false; | |
| var output = document.getElementById('output'); | |
| var canvas = document.querySelector('#snapshotCanvas'); | |
| var context = canvas.getContext('2d'); | |
| document.querySelector('#stopVideoCapture').addEventListener('click', function(e) { | |
| output.pause(); | |
| }, false); | |
| document.querySelector('#startVideoCapture').addEventListener('click', function(e) { | |
| startCapture(); | |
| }, false); | |
| document.querySelector('#takeSnapshot').addEventListener('click', function(e) { | |
| takeSnapshot(); | |
| }, false); | |
| function onSuccess(stream) { | |
| var source; | |
| output.autoplay = true; | |
| if (!is_webkit) { | |
| source = stream; | |
| } | |
| else { | |
| source = window.webkitURL.createObjectURL(stream); | |
| } | |
| output.src = source; | |
| } | |
| function onError() { | |
| // getUserMedia API not supported, or another application is using the webcam ! | |
| } | |
| function startCapture() { | |
| if (n.getUserMedia) { | |
| // opera users (hopefully everyone else at some point) | |
| n.getUserMedia({video:true, audio:true}, onSuccess, onError); | |
| } | |
| else if (n.webkitGetUserMedia) { | |
| // webkit users | |
| is_webkit = true; | |
| n.webkitGetUserMedia({video:true}, onSuccess, onError); | |
| } | |
| } | |
| takeSnapshot = function() { | |
| context.drawImage(output, 0, 0, canvas.width, canvas.height); | |
| } | |
| var idx = 0; | |
| var filters = [ | |
| 'grayscale', | |
| 'sepia', | |
| 'blur', | |
| 'brightness', | |
| 'contrast', | |
| 'hue-rotate', 'hue-rotate2', 'hue-rotate3', | |
| 'saturate', | |
| 'invert', | |
| '' | |
| ]; | |
| function changeFilter(e) { | |
| var el = e.target; | |
| el.className = ''; | |
| var effect = filters[idx++ % filters.length]; | |
| if (effect) { | |
| el.classList.add(effect); | |
| } | |
| } | |
| output.addEventListener('click', changeFilter, false); | |
| </script> | |
| <script id="jsbin-source-javascript" type="text/javascript"> | |
| </script></body> | |
| </html> |
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