写个移动端html 调用摄像头渲染到画面支持美颜
时间: 2023-08-22 18:25:10 浏览: 46
好的,以下是一个实现在移动端HTML中调用摄像头并支持美颜的示例代码:
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Camera Beauty</title>
<style>
#videoElement {
width: 100%;
height: auto;
max-width: 600px;
margin: 0 auto;
}
</style>
</head>
<body>
<video id="videoElement"></video>
<script>
// 获取video元素
const video = document.getElementById('videoElement');
// 判断是否支持调用摄像头
if (navigator.mediaDevices.getUserMedia) {
// 调用摄像头
navigator.mediaDevices.getUserMedia({ video: true })
.then(function (stream) {
// 将摄像头渲染到video元素中
video.srcObject = stream;
})
.catch(function (error) {
console.log("Something went wrong!");
});
}
// 美颜滤镜
const setFilter = () => {
// 创建canvas元素,用于渲染滤镜效果
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
canvas.width = video.videoWidth;
canvas.height = video.videoHeight;
context.drawImage(video, 0, 0, canvas.width, canvas.height);
const imageData = context.getImageData(0, 0, canvas.width, canvas.height);
const data = imageData.data;
for (let i = 0; i < data.length; i += 4) {
let r = data[i];
let g = data[i + 1];
let b = data[i + 2];
data[i] = (r * 0.393) + (g * 0.769) + (b * 0.189);
data[i + 1] = (r * 0.349) + (g * 0.686) + (b * 0.168);
data[i + 2] = (r * 0.272) + (g * 0.534) + (b * 0.131);
}
context.putImageData(imageData, 0, 0);
// 将滤镜效果渲染到video元素中
video.style.backgroundImage = `url(${canvas.toDataURL()})`;
};
// 调用美颜滤镜
video.addEventListener('play', () => {
setInterval(setFilter, 10);
}, false);
</script>
</body>
</html>
```
其中,通过 `navigator.mediaDevices.getUserMedia` 方法调用摄像头,将摄像头渲染到 `<video>` 元素中;通过 `setFilter` 方法实现美颜滤镜效果,并将滤镜效果渲染到 `<video>` 元素中。最终实现在移动端HTML中调用摄像头并支持美颜的功能。