录音
win10操作系统下：
firefox浏览器上flash录音microphone的SampleDataEvent事件采集不到event.data数据。
chrome浏览器上录音丢失部分数据，声音失真。
测试代码如下：
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="100" minHeight="600" width="700" applicationComplete="abc()">
<fx:Script> ! ! !@ !
<![CDATA[
private var mic:Microphone = null;
private var timer:Timer = new Timer(1500,1);
private var loger:Boolean = false;
// private var _buffer:ByteArray;
private var _buffer2:ByteArray;
private function abc():void{
log1.text = log1.text+"\n 20160114_1135";
}
private function init(event:MouseEvent):void{
log1.text = "";
log1.text = log1.text+"\n Capabilities.playerType:"+Capabilities.playerType;
log1.text = log1.text+"\n Capabilities.isDebugger:"+Capabilities.isDebugger;
log1.text = log1.text+"\n Capabilities.version:"+Capabilities.version;
log1.text = log1.text+"\n Capabilities.avHardwareDisable:"+new String(Capabilities.avHardwareDisable);
log1.text = log1.text+"\n Capabilities.hasAudio:"+new String(Capabilities.hasAudio);
log1.text = log1.text+"\n Capabilities.hasAudioEncoder:"+new String(Capabilities.hasAudioEncoder);
log1.text = log1.text+"\n Capabilities.hasMP3:"+new String(Capabilities.hasMP3);
log1.text = log1.text+"\n Capabilities.hasStreamingAudio:"+new String(Capabilities.hasStreamingAudio);
log1.text = log1.text+"\n";
log1.text = log1.text+"\n Microphone.isSupported:"+new String(Microphone.isSupported);
var mics:Array = Microphone.names;
log1.text = log1.text+"\n Microphone.size:"+new String(mics.length);
// for(var name:String in mics){
// log1.text = log1.text+"\n Microphone.name:"+new String(name);
// }
//
// if(mics.length>1){
// mic = Microphone.getMicrophone(mics.length-1);
// }else{
// mic = Microphone.getMicrophone();
// }
mic = Microphone.getMicrophone();
log1.text = log1.text+"\n Microphone.index:"+new String(mic.index);
log1.text = log1.text+"\n Microphone.name:"+mic.name;
this._buffer2 = new ByteArray();
this._buffer2.endian = Endian.LITTLE_ENDIAN;
mic.gain=66;
mic.codec = SoundCodec.NELLYMOSER;
mic.rate = int(txt_rate.text);
mic.setUseEchoSuppression(true);
mic.setSilenceLevel(1,-1);
mic.addEventListener(SampleDataEvent.SAMPLE_DATA,activity);
mic.addEventListener(StatusEvent.STATUS, onMicStatus);
log1.text = log1.text+"\n";
log1.text = log1.text+"\n activityLevel:"+new String(mic.activityLevel);
log1.text = log1.text+"\n codec:"+new String(mic.codec);
log1.text = log1.text+"\n enableVAD:"+new String(mic.enableVAD);
log1.text = log1.text+"\n encodeQuality:"+new String(mic.encodeQuality);
log1.text = log1.text+"\n framesPerPacket:"+new String(mic.framesPerPacket);
log1.text = log1.text+"\n gain:"+new String(mic.gain);
log1.text = log1.text+"\n index:"+new String(mic.index);
log1.text = log1.text+"\n noiseSuppressionLevel:"+new String(mic.noiseSuppressionLevel);
log1.text = log1.text+"\n rate:"+new String(mic.rate);
log1.text = log1.text+"\n silenceLevel:"+new String(mic.silenceLevel);
log1.text = log1.text+"\n silenceTimeout:"+new String(mic.silenceTimeout);
log1.text = log1.text+"\n useEchoSuppression:"+new String(mic.useEchoSuppression);
if(mic.enhancedOptions){
log1.text = log1.text+"\n enhancedOptions.autoGain:"+new String(mic.enhancedOptions.autoGain);
log1.text = log1.text+"\n enhancedOptions.echoPath:"+new String(mic.enhancedOptions.echoPath);
log1.text = log1.text+"\n enhancedOptions.isVoiceDetected:"+new String(mic.enhancedOptions.isVoiceDetected);
log1.text = log1.text+"\n enhancedOptions.mode:"+new String(mic.enhancedOptions.mode);
log1.text = log1.text+"\n enhancedOptions.nonLinearProcessing:"+new String(mic.enhancedOptions.nonLinearProcessing);
}
}
protected function button1_clickHandler(event:MouseEvent):void
{
log1.text = log1.text+"\n on click 1";
log.text = "";
log0.text = "";
log1.text = log1.text+"\n on click 2";
_buffer2.clear();
log1.text = log1.text+"\n on click 3";
loger = true;
timer.addEventListener(TimerEvent.TIMER_COMPLETE,onTimerComplete);
timer.start();
log1.text = log1.text+"\n on click 4";
log1.text = log1.text+"\n muted:"+new String(mic.muted);
log1.text = log1.text+"\n SampleDataEvent: "+new String(mic.hasEventListener(SampleDataEvent.SAMPLE_DATA));
}
private function activity(event:SampleDataEvent):void {
if(loger){
log1.text = log1.text+"\n activity2";
event.data.position = 0;
log1.text = log1.text+"\n activity2:"+new String(event.data.length)+" "+new String(event.data.bytesAvailable);
while (event.data.bytesAvailable)
{
var v:Number = event.data.readFloat();
var engry:Number = v*0x7fff;
this._buffer2.writeShort(engry);
log0.text = log0.text+"\n"+v.toFixed(10);
log.text = log.text+"\n"+engry.toFixed(0);
}
}
}
public function onTimerComplete(event:TimerEvent):void {
loger = false;
timer.removeEventListener(TimerEvent.TIMER_COMPLETE,onTimerComplete);
}
public function onMicStatus(event:StatusEvent):void
{
log1.text = log1.text+"\n onMicStatus "+event.code;
}
protected function button2_clickHandler(event:MouseEvent):void
{
log.text = "";
log0.text = "";
}
protected function button3_clickHandler(event:MouseEvent):void
{
var file:FileReference = new FileReference();
file.save(this._buffer2, "r2.wav");
}
]]>
</fx:Script>
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
</fx:Declarations>
<s:TextArea x="266" y="43" width="116" height="550" id="log"/>
<s:TextArea x="407" y="43" width="206" height="550" id="log0"/>
<s:TextArea x="10" y="43" width="235" height="550" id="log1"/>
<s:Button x="205" y="14" label="Record" click="button1_clickHandler(event)"/>
<s:Button x="279" y="14" label="Clear" click="button2_clickHandler(event)"/>
<s:Button x="522" y="14" label="Save" click="button3_clickHandler(event)"/>
<s:TextInput x="10" y="14" width="81" text="44" id="txt_rate"/>
<s:Button x="127" y="14" label="Init" click="init(event)"/>
</s:Application>
有大神能够解决，请发至hnliu8686886@foxmail.com，谢谢！
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