2022-08-08 10:55:27 +08:00
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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>jQuery-webcam-master</title>
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2022-08-17 17:21:01 +08:00
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<!-- <link href="cs.css" rel="stylesheet" type="text/css"> -->
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2022-08-08 10:55:27 +08:00
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<script src="jquery.js"></script>
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<script src="jquery.webcam.min.js"></script>
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2022-10-18 15:00:33 +08:00
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<!-- <script src="excanvas.js"></script> -->
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2022-08-11 17:29:34 +08:00
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</head>
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<body>
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2022-08-16 16:03:30 +08:00
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<div id="webcam" style="float: left; clear: both;"></div>
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2022-08-17 17:21:01 +08:00
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<!-- <input id="snapBtn" type="button" value="人脸识别" style="float: left; clear: both;"/>
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<img id="base64image" src='' width="450" height="320" style="float: left; clear: both;"/> -->
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2022-08-08 10:55:27 +08:00
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<script type="text/javascript">
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2022-10-18 15:00:33 +08:00
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var pos = 0, ctx = null, saveCB,w = 380,h= 200, image = new Array();
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var canvas = document.createElement("canvas");//创建画布指定宽度和高度
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canvas.setAttribute('width', 320);
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canvas.setAttribute('height', 240);
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document.body.appendChild(canvas);
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// canvas = window.G_vmlCanvasManager.initElement(canvas);
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ctx = canvas.getContext("2d");//设置画布为2d，未来可能支持3d
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image = ctx.getImageData(0, 0, 320, 240);//截图320*240，即整个画布作为有效区(cutx?)
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2022-08-11 17:29:34 +08:00
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$(document).ready(function() {
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$("#webcam").webcam({
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width: w,
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height: h,
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mode: "callback",
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swffile: "jscam_canvas_only.swf", // 这里引入swf文件，注意路径
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onTick: function(remain) {},
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onSave: function(data) {
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2022-10-18 15:00:33 +08:00
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var col = data.split(";");//把data切割为数组
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var img = image;
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//绘制图像
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//参数data 只是每行的数据 ，例如320*240 大小的照片，一张完整的照片下来需要240个data，每个data有320个rgb
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for(var i = 0; i < 320; i++) {
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//转换为十进制
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var tmp = parseInt(col[i]);
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img.data[pos + 0] = (tmp >> 16) & 0xff;
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img.data[pos + 1] = (tmp >> 8) & 0xff;
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img.data[pos + 2] = tmp & 0xff;
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img.data[pos + 3] = 0xff;
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pos+= 4;
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}
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//当绘制320*240像素的图片时发给后端php
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if (pos == 4 * 320 * 240) {
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//把图像放到画布上,输出为png格式
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ctx.putImageData(img, 0, 0);
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window.parent.postMessage({"image": canvas.toDataURL("image/png")}, '*');
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2022-08-11 17:29:34 +08:00
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image = new Array();
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pos = 0;
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}
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2022-10-18 15:00:33 +08:00
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// image.push(data);
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// pos += 4 * 320;
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//post>= 4 * 320(x轴像素) * 240(y轴像素) 表示读取图像数据完毕
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// if (pos >= 4 * 320 * 240) {
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// window.parent.postMessage({"image":image.join('|')}, '*');
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// image = new Array();
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// pos = 0;
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// }
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2022-08-11 17:29:34 +08:00
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},
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2022-10-18 15:00:33 +08:00
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onCapture: function(data) {
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webcam.save();
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// Show a flash for example
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},
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debug: function(type, string) {
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console.log('type:' + type + ',string:' + string);
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// Write debug information to console.log() or a div
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},
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onLoad: function() {
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// Page load
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2022-08-08 10:55:27 +08:00
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}
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2022-08-11 17:29:34 +08:00
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});
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2022-08-17 17:21:01 +08:00
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// $('#snapBtn').on('click', function() {
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// webcam.capture();
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// });
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2022-08-12 10:24:41 +08:00
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function receiveMessageFromParent ( event ) {
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2022-09-07 16:20:59 +08:00
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if(event.data == 'releaseCamera'){
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location.reload();
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}else if(event.data = 'capture'){
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webcam.capture();
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}
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2022-08-17 17:21:01 +08:00
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//$('#base64image').attr('src', 'data:image/jpg;base64,' + event.data.data);
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2022-08-12 10:24:41 +08:00
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};
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window.addEventListener('message', receiveMessageFromParent, false);
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2022-08-11 17:29:34 +08:00
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});
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2022-08-08 10:55:27 +08:00
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</script>
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</body>
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</html>
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