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wow3.html
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wow3.html
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<meta name="viewport" content="width=device-width,minimum-scale=0.5,maximum-scale=5,user-scalable=yes,minimal-ui" />
<title>两个视频合成</title>
<head>
<style>
img {display:block;}
div {mergin:10px;}
</style>
</head>
<body>
<h1 id="tit">两个视频合成</h1>
<div id="mod_player" style="opacity: 0;z-index:9; position:absolute; top:470px;left:20px;overflow: hidden;width:60px">
<video id="vv" width=60 height=30 controls="controls" xloop="loop" webkit-playsinline x-webkit-airplay="true" data-playing-loadingad="0" preload="none" src="/images/huabanxie.mp4"></video>
</div>
<div style="margin-top: 10px;z-index:1">
<canvas width=352 height=360 id="thecanvas" style="border: 1px #666666 solid;"></canvas>
</div>
<div style="margin:20px">
<button id="stop">播放</button>
<button id="saveImageBtn">截图</button>
<button id="reset">清除</button>
<button id="myTurn">合成</button>
</div>
<div>
<canvas width=300 height=240 id="precanvas" style="border: 1px #666666 solid;"></canvas>
</div>
<div style="display:none;">
<video id="vhead" width=416 height=240 controls="controls" xloop="loop" webkit-playsinline x-webkit-airplay="true" data-playing-loadingad="0" preload="none" src="/images/mysong.mp4"></video>
<canvas width=416 height=240 id="shoot" style="border: 1px #666666 solid;"></canvas>
</div>
<div id="saveImg"></div>
</body>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.js"></script>
<script src="/javascripts/jquery.facedetection.js"></script>
<script>
var $e = function (a){
return "string"==typeof a ? document.getElementById(a) : a;
}
$('#ahead').faceDetection({
complete: function (faces) {
console.log(faces);
}
});
var canvas = $e("thecanvas");
var ctx = canvas.getContext("2d");
var filter = 1;
function isMatch(r,g,b){
var matchPoint = [15,226,93];//rgb
var absR = matchPoint[0] - r;
var absG = matchPoint[1] - g;
var absB = matchPoint[2] - b;
var dis = absR*absR+absG*absG+absB*absB;
return dis < 1600;
}
function checkPosition(imageData){
var min_x = 9999,
min_y = 9999,
max_x = 0,
max_y = 0;
var min_y_x = 0,
max_y_x = 0;
for (var y = 0; y < imageData.height; y++) {
if (max_y && y > (max_y + 5)){
break;
}
for (x = 0;x < imageData.width; x++) {
if (max_x && x > (max_x + 5)){
break;
}
var p = (y * imageData.width + x) * 4;
//一个像素占四个字节，即 p 为当前指针的位置
if (isMatch(imageData.data[p],
imageData.data[p+1],
imageData.data[p+2])){
//match
imageData.data[p+3]=0;
if (x < min_x) min_x = x;
if (y < min_y) {
min_y = y;
min_y_x = x;
}
if (x > max_x) max_x = x;
if (y > max_y) {
max_y = y;
max_y_x = x;
}
}
//imageData.data[p+3]=0;
}
}
if (max_x){
return {
x : min_x,
y : min_y,
width : max_x - min_x,
height : max_y - min_y,
rotate : Math.atan((min_y_x - max_y_x)/(max_y - min_y))*1.0,
imageData: imageData,
};
}
return null;
}
window.onload = function() {
if (window.location.href.indexOf("show") > 0){
$("div").show();
}
var v = $e("vv");
v.load();
v.play();
//v.muted = true;
var vhead = $e("vhead");
vhead.load();
//vhead.play();
vhead.muted = true;
//v.play();
var pre_can = $e("precanvas");
var pre_ctx = pre_can.getContext("2d");
var videoWidth = 352;
var videoHeight = 360;
var xx = 120,yy=70,ww=150,hh=110;
//设置旋转点到画布中心
pre_ctx.translate(pre_can.width/2, pre_can.height/2);
//旋转画布，为了修正图片方向
pre_ctx.rotate(Math.PI/2);
pre_ctx.translate(ww/2 - pre_can.height/2, pre_can.width/2 - hh/2);
//video事件，先触发play，再触发loadedmetadata
v.addEventListener('loadedmetadata', function(){
//return;
//重置高宽
videoWidth = v.videoWidth;
videoHeight = v.videoHeight;
canvas.width = videoWidth;
canvas.height = videoHeight;
shoot.width = videoWidth;
shoot.height = videoHeight;
});
v.addEventListener('pause',function() {
vhead.pause();
});
//渲染画面
v.addEventListener('play',function() {
vhead.play();
var i = window.setInterval(function(){
var start = new Date();
//底层MV
ctx.drawImage(v, 0, 0, videoWidth, videoHeight);
if (filter == 1){
var imageData = ctx.getImageData(0, 0, videoWidth, videoHeight);
//判断脸部坐标和大小
var re = checkPosition(imageData);
if (re){
//put a head into the picture
ctx.putImageData(re.imageData, 0, 0);
var imgData = canvas.toDataURL("image/png");
var img = new Image();
img.src = imgData;
//console.log(re.rotate *180/Math.PI);
//pre_ctx.fillStyle = "rgba(125, 46, 138, 0.5)";
//pre_ctx.fillRect(0, 0, ww, hh);
//旋转画布，为了修正图片方向
pre_ctx.rotate(re.rotate);
pre_ctx.drawImage(vhead, xx, yy, ww, hh, -ww/2, -hh/2, ww, hh);
//再切换回来
pre_ctx.rotate(-re.rotate);
ctx.drawImage(pre_can, 0, 0, hh, ww, re.x, re.y, re.width, re.height );
ctx.drawImage(img, 0, 0, videoWidth, videoHeight);
//console.log(re.x + "," + re.y + "[" + re.width + "," + re.height + "]");
//console.log(((new Date()) - start));
//window.a = new Image();
//a.src = 'http://192.168.31.238?' + (+start) + "=" + ((new Date()) - start);
}
try{}catch(e){
alert("视频被重定向了，无法跨域读取:" + e);
clearInterval(i);
}
}
}, 65);
});
//截图
var imgCount = 0;
var shoot = $e("shoot");
var shoot_ctx = shoot.getContext("2d");
$("#saveImageBtn").on("click", function(){
shoot_ctx.drawImage(canvas, 0, 0, videoWidth, videoHeight);
imgCount++;
shoot_ctx.fillStyle = "rgba(0, 0, 0, 0.5)";
shoot_ctx.fillRect(10,10,50,50);
shoot_ctx.font = "40pt Calibri";
shoot_ctx.fillStyle = "rgba( 255, 255, 255, 0.8)"; // black color
shoot_ctx.fillText("" + imgCount, 22, 50);
var imgData = shoot.toDataURL("image/png");
var img = new Image();
img.src = imgData;
$("#saveImg").append(img);
});
var playStatus = true;
$("#stop").on("click", function(){
if (playStatus){
this.innerHTML = "播放";
//vhead.pause();
v.pause();
}
else{
this.innerHTML = "暂停";
v.play();
//vhead.play();
}
playStatus = !playStatus;
});
$("#myTurn").on("click", function(){
filter = 1;
});
$("#reset").on("click", function(){
filter = 0;
});
$("#tit").dblclick(function(){
$("div").show();
});
};
</script>
</html>