Question

Is it possible to read the hardware information (at least the name) of the (in-build) microphone while a user is recording an audio file on my website?

Is that possible with JavaScript or is there another way to solve this problem? I searched the web but could only find scripts for recording with JavaScript.

Answer 1

较新版本：适用于Firefox，MS Edge和Chrome 45，并带有试验标记。

使用标准navigator.mediaDevices.enumerateDevices()，您可以获得可用来源列表。每个来源都有kind属性，以及label。

var stream;
navigator.mediaDevices.getUserMedia({ audio:true })
.then(s => (stream = s), e => console.log(e.message))
.then(() => navigator.mediaDevices.enumerateDevices())
.then(devices => {
  stream && stream.stop();
  console.log(devices.length + " devices.");
  devices.forEach(d => console.log(d.kind + ": " + d.label));
})
.catch(e => console.log(e));

var console = { log: msg => div.innerHTML += msg + "<br>" };

<div id="div"></div>

文档＆amp;相关

MDN上的
navigator.mediaDevices - https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices

“Media Capture and Streams”规范 - http://w3c.github.io/mediacapture-main/getusermedia.html#mediadevices

Sam Dutton选择输入源的演示 - https://webrtc.github.io/samples/src/content/devices/input-output/

由于adapter.js polyfill。
，最后一个演示版适用于常规Chrome

Answer 2

过时的API

此答案使用的是非标准API，浏览器支持有限。它在写作时可以在当前的Chrome中使用，但在其他浏览器的未来版本中不会被采用，并且可能会在Chrome中消失。有关更广泛支持的解决方案，请参阅：https://stackoverflow.com/a/31758598/610573

使用MediaStreamTrack.getSources()，您可以获得可用来源列表。每个来源都有kind属性，以及label。

MediaStreamTrack.getSources(function(sourceInfos) {
    for (var i = 0; i != sourceInfos.length; ++i) {
        var thisSource = sourceInfos[i];
        console.log('stream type: '+thisSource.kind+', label: '+thisSource.label); 
        // example: stream type: audio, label: internal microphone
    }
});

文档＆amp;相关

MDN上的
MediaStreamTrack - https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack

＆＃34;捕捉音频＆amp; HTML5中的视频＆＃34;在HTML5Rocks.com上 - http://www.html5rocks.com/en/tutorials/getusermedia/intro/

Sam Dutton选择输入源的演示 - https://simpl.info/getusermedia/sources/

How to get hardware information of (in-build) microphone?

2 个答案:

过时的API