我试图从Chrome 29 Beta版中的HTML5中使用HTML5进行录音(它已启用其beta 29中的web音频支持)。在下面的代码中,ProcessAudio是Web音频过滤器功能,我从其中接收来自麦克风的输入缓冲区。我得到正确的样本量。但是,移动Chrome中的音频pcm样本始终为零。 Chrome是否禁用其移动版本音频滤镜的输入?有没有人在Chrome移动版本中使用HTML5进行录音工作? 以下代码在Chrome(桌面版)中正常工作。使用html5捕获移动镀铬上的麦克风输入
<!DOCTYPE HTML>
<html>
<head>
<script>
function GetMedia(obj, fnSuccess, fnFailure)
{
if(navigator.getUserMedia)
{
return navigator.getUserMedia(obj, fnSuccess, fnFailure);
}
else if(navigator.webkitGetUserMedia)
{
return navigator.webkitGetUserMedia(obj, fnSuccess, fnFailure);
}
else if(navigator.mozGetUserMedia)
{
return navigator.mozGetUserMedia(obj, fnSuccess, fnFailure);
}
else if(navigator.msGetUserMedia)
{
return navigator.msGetUserMedia(obj, fnSuccess, fnFailure);
}
alert("no audio capture");
}
var incrementer = 0;
function ProcessAudio(e)
{
var inputBuffer = e.inputBuffer.getChannelData(0);
var outputBuffer = e.outputBuffer.getChannelData(0);
outputBuffer.set(inputBuffer, 0);
document.getElementById("display").innerText =
incrementer + " " + inputBuffer[0];
incrementer++;
}
var context = null;
function Success(localMediaStream)
{
context = new window.webkitAudioContext();
var microphone = context.createMediaStreamSource(localMediaStream);
var node = context.createScriptProcessor(4096, 1, 1);
node.onaudioprocess = ProcessAudio;
microphone.connect(node);
node.connect(context.destination);
}
function Error(err)
{
alert("no audio support");
}
function load(e)
{
GetMedia({audio:true,video:false}, Success, Error);
}
</script>
</head>
<body onload="load(event)">
<div>Audio Player</div>
<div id="display"></div>
<video id="localvideo" autoplay="autoplay" style="opacity:1"></video>
</body>
</html>
仅供参考,因为Chrome for mobile(稳定版和Beta版)已经更新,好消息是现在所有的工作都正常,如预期的那样,还有现场输入。点击代码! PS:也许我的错误报告做到了C: – JSmyth