Chrome 扩展程序的相机权限

Question

是否可以接收 Chrome 扩展程序的相机权限（不是应用程序！）？ 如果是这样，我们需要做什么？

我环顾四周，但似乎无法找到关于将相机用于 chrome 扩展的直接答案。

Answer 1

您只需要 HTML5 和一点点 javascript 即可访问相机。 参考这个链接

<!--
    Ideally these elements aren't created until it's confirmed that the 
    client supports video/camera, but for the sake of illustrating the 
    elements involved, they are created with markup (not JavaScript)
-->
<video id="video" width="640" height="480" autoplay></video>
<button id="snap">Snap Photo</button>
<canvas id="canvas" width="640" height="480"></canvas>

javascript：

// Grab elements, create settings, etc.
var video = document.getElementById('video');

// Get access to the camera!
if(navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
    // Not adding `{ audio: true }` since we only want video now
    navigator.mediaDevices.getUserMedia({ video: true }).then(function(stream) {
        video.src = window.URL.createObjectURL(stream);
        video.play();
    });
}