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16年专业研发|中文alexa排名第一的CMS品牌-基于dotNET core、功能强大，集成站群、微信开发、小程序与ERP及OA办公系统，支持国际语言和多民族语言，世界五百强与大型门户专用高端网站内核CMS系统
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JavaScript
var Camera = {
res: { stream: null, video: null, canvas: null },
//初始化
init: function (videoID) {
if (videoID) { Camera.res.video = document.getElementById(videoID); }
Camera.res.canvas = document.createElement("canvas");
Camera.res.canvas.width = this.res.video.width;
Camera.res.canvas.height = this.res.video.height;
},
//打开摄像头
open: function () {
navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
if (navigator.getUserMedia) {
navigator.getUserMedia({ video: true }, Camera.open_succed, Camera.open_fail);
}
else { console.log("浏览器不支持"); return false; }
},
open_succed: function (stream) {
window.URL = window.URL || window.webkitURL || window.msURL || window.oURL;
Camera.res.stream = stream;
//chrome 升级后不再支持
//Camera.res.video.src = (window.URL && window.URL.createObjectURL) ? window.URL.createObjectURL(Camera.res.stream) : Camera.res.stream;
Camera.res.video.srcObject = Camera.res.stream;
console.log("打开成功", Camera.res.video.src);
},
open_fail: function (error_details) { console.log("打开失败", error_details); alert("打开摄像头失败,站点必须为https,并在浏览器中授权许可"); },
//关闭摄像头
stop: function () {
if (Camera.res.stream) {
Camera.res.stream.stop(); Camera.res.stream = null;
}
Camera.res.video.src = "";
console.log("已停止");
},
//拍照,并返回字符串
shot: function () {
var ctx = Camera.res.canvas.getContext("2d");
ctx.drawImage(Camera.res.video, 0, 0);
var base64Data = Camera.res.canvas.toDataURL();
//var base64Data = base64Data.substr(22);
//Camera.save(base64Data, function (url) { $("#test_img").attr("src", url); });
return base64Data;
},
//传往服务器
save: function (base64, cb) {
SFileUP.AjaxUpBase64(base64, function (url) { cb(url); });
}
, saveBlob: function (base64, cb) {
var ref = this;
var blob = ref.dataURItoBlob(base64);
var form = new FormData();
form.append("file", blob,"blob.png");
$.ajax({
type: 'POST',
url: '/User/Com/SaveFile',
data: form,
processData: false,
contentType: false,
success: function (data) {
if (cb) { cb(data);}
},
error: function (a, b, c) { console.error("err", c); }
});
}
//base64转换为blob用于服务端 存储 Code:/IO/SaveFile
, dataURItoBlob: function (base64Data) {
var byteString;
if (base64Data.split(',')[0].indexOf('base64') >= 0)
byteString = atob(base64Data.split(',')[1]);
else
byteString = unescape(base64Data.split(',')[1]);
var mimeString = base64Data.split(',')[0].split(':')[1].split(';')[0];
var ia = new Uint8Array(byteString.length);
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.charCodeAt(i);
}
return new Blob([ia], { type: mimeString });
}
};
//Camera.init("cam_vdo");
//Camera.open();