public MicEncoder(AudioEncodeCfg audioCfg, Action <MediaFrame> callback)
{
_audioCfg = audioCfg;
_channels = audioCfg.channel;
_frequency = audioCfg.frequency;
_capturer = new MicCapturer(audioCfg.micId, _channels, _frequency, audioCfg.samples, MicCapturer_CallBack);
if (audioCfg.encodeName.EqIgnoreCase("SPEX"))
{
_speex = new Speex(4);
}
else if (audioCfg.encodeName.EqIgnoreCase("AAC_"))
{
if (audioCfg.Params.ContainsKey("UseLastFaacImp") && FaacImp.LastFaacImp != null)
{
_faacImp = FaacImp.LastFaacImp;
_faacImp.Encode(new byte[2048]);
_faacImp.Encode(new byte[2048]);
_faacImp.Encode(new byte[2048]);
_faacImp.Encode(new byte[2048]);
_faacImp.Encode(new byte[2048]);
}
else
{
_faacImp = new FaacImp(_channels, _frequency, audioCfg.bitrate);
}
}
_callBack = callback;
}
public int bitrate = 32000; // 比特率
public static AudioEncodeCfg GetDefault()
{
AudioEncodeCfg r = new AudioEncodeCfg();
r.SetEncoder("AAC_");
r.frequency = 32000;
r.format = 16;
r.channel = 1;
r.samples = 1024 * 2;
r.micId = 0;
return(r);
}