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audio.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
#sb{
height: 66px;
background: green;
transition: all 0.26s;
}
</style>
</head>
<body>
<input id="fileInput" type="file">
<video id="video" src=''></video>
<div id="sb"></div>
<button id="qie">来吧come</button>
</body>
</html>
<script> /* var AudioContext = window.AudioContext || window.webkitAudioContext; var audioCtx = new AudioContext();
var oscillatorNode = audioCtx.createOscillator();
var gainNode = audioCtx.createGain();
var finish = audioCtx.destination;
console.log(finish,gainNode,oscillatorNode);*/
var exArray=[],bbq=true;
var audioCtx = new (window.AudioContext || window.webkitAudioContext)(); var oscillator = audioCtx.createOscillator(); var gainNode = audioCtx.createGain(); var script = audioCtx.createScriptProcessor(2048, 1, 1);
navigator.mediaDevices.enumerateDevices().then(
function (sourceInfos) {
console.log(sourceInfos);
for (var i = 0; i != sourceInfos.length; ++i) {
var sourceInfo = sourceInfos[i];
//这里会遍历audio,video，所以要加以区分
if (sourceInfo.kind === 'videoinput') {
console.log(sourceInfo);
exArray.push(sourceInfo.deviceId);
}
}
}
);
console.log(exArray);
var aa=exArray[1];
qie.onclick=function () {
aa=exArray[0];
if(bbq){
if (navigator.mediaDevices) {
console.log('getUserMedia supported.');
navigator.mediaDevices.getUserMedia (
{
audio: true,
video: {deviceId:{exact:'e37ecd9b4ea696b83a06466dd12bca95e10c0cb018a4ad35a83f078f6bd6d6f0'}}}
) .then(function(stream) {
oscillator.connect(gainNode);
gainNode.connect(audioCtx.destination);
source = audioCtx.createMediaStreamSource(stream);
source.connect(script);
script.connect(audioCtx.destination);
var a=0,b=0,c=0,timer;
script.onaudioprocess = function (event) {
var input = event.inputBuffer.getChannelData(0);
input[0]<0?null:sb.style.width= input[0]*1100+'px'
/*for (i = 0; i < input.length; ++i) {
sum += input[i] * input[i];
if (Math.abs(input[i]) > 0.99) {
clipcount += 1;
}
}
a = Math.sqrt(sum / input.length);
b = 0.95 * b + 0.05 * a;
c = clipcount / input.length;*/
};
video.srcObject=stream;
video.play();
})
}
bbq=!bbq
}else{
if (navigator.mediaDevices) {
console.log('getUserMedia supported.');
navigator.mediaDevices.getUserMedia (
{
audio: true,
video: true}
) .then(function(stream) {
oscillator.connect(gainNode);
gainNode.connect(audioCtx.destination);
source = audioCtx.createMediaStreamSource(stream);
source.connect(script);
script.connect(audioCtx.destination);
var a=0,b=0,c=0,timer;
script.onaudioprocess = function (event) {
var input = event.inputBuffer.getChannelData(0);
input[0]<0?null:sb.style.width= input[0]*1100+'px';
/*for (i = 0; i < input.length; ++i) {
sum += input[i] * input[i];
if (Math.abs(input[i]) > 0.99) {
clipcount += 1;
}
}
a = Math.sqrt(sum / input.length);
b = 0.95 * b + 0.05 * a;
c = clipcount / input.length;*/
};
video.srcObject=stream;
video.play();
});
bbq=!bbq;
}
}
};
if (navigator.mediaDevices) {
console.log('getUserMedia supported.');
navigator.mediaDevices.getUserMedia (
{
audio: true,
video: true}
) .then(function(stream) {
oscillator.connect(gainNode);
gainNode.connect(audioCtx.destination);
source = audioCtx.createMediaStreamSource(stream);
source.connect(script);
script.connect(audioCtx.destination);
var a=0,b=0,c=0,timer;
script.onaudioprocess = function (event) {
console.log(event,2);
var input = event.inputBuffer.getChannelData(0);
input[0]<0?null:sb.style.width= input[0]*1100+'px';
/*for (i = 0; i < input.length; ++i) {
sum += input[i] * input[i];
if (Math.abs(input[i]) > 0.99) {
clipcount += 1;
}
}
a = Math.sqrt(sum / input.length);
b = 0.95 * b + 0.05 * a;
c = clipcount / input.length;*/
};
video.srcObject=stream;
video.play();
})
}
</script>
<script>
var a = document.getElementById('sb')
console.log(a,'aaaa');
/*如果你看到了一座很远的山，那么一定要看看这座远山的脚下有没有街灯霓虹，因为你不知道这远山的背后竟是如此的繁星点点浩瀚静倪，可能是因为太长时间都存在于林立高楼精致规矩与小心翼翼之间，又或者是你从来都没有过的肆意天真心神安...
*/
</script>
<script>
</script>