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August 29, 2015 14:16
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[html5][mediastream]getUserMedia
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| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <title>User Media</title> | |
| <script src="script.js"></script> | |
| </head> | |
| <body> | |
| <div id="camera"></div> | |
| <div id="shot"></div> | |
| </body> | |
| </html> |
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| ;window.addEventListener("load", function (ev) { | |
| // API: http://w3c.github.io/mediacapture-main/getusermedia.html | |
| // Polyfill Promise based API for Chrome | |
| var getUserMedia = navigator.mediaDevices ? | |
| navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices) : | |
| function (constraints) { | |
| return new Promise(function (f, r) { | |
| navigator.webkitGetUserMedia(constraints, f, r); | |
| }); | |
| }; | |
| getUserMedia({video: true, audio: false}).then(function (stream) { | |
| var video = document.createElement("video"); | |
| document.getElementById("camera").appendChild(video); | |
| // define video screen size beacuse | |
| // browsers not yet support MediaStreamTrack.getConstraints() API | |
| //window.track = stream.getVideoTracks()[0] | |
| video.style.width = "50%"; | |
| video.src = URL.createObjectURL(stream); | |
| video.play(); | |
| video.addEventListener("click", function () { | |
| console.log("shot"); | |
| var canvas = document.createElement("canvas"); | |
| //console.log(video.width, video.height); | |
| canvas.width = video.clientWidth; | |
| canvas.height = video.clientHeight; | |
| var c2d = canvas.getContext("2d"); | |
| c2d.drawImage(video, 0, 0, canvas.width, canvas.height); | |
| //document.getElementById("shot").appendChild(canvas); | |
| var img = document.createElement("img"); | |
| var uri = canvas.toDataURL("image/png"); | |
| //console.log(uri); | |
| img.src = uri; | |
| document.getElementById("shot").appendChild(img); | |
| }, false); | |
| }); | |
| }, false); |
Not worked on Android (5.0.1) chrome.
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demo: https://rawgit.com/bellbind/19ed12fcfbb8d4424316/raw/index.html