Android client SDK allows customizing audio input?

[zengxianhua]

in sdk document i found these description:

1 Implement com.intel.webrtc.base.IcsAudioRecord.AudioFrameGeneratorInterface;

2 Call WebRtcUtils.setCustomizedAudioInput(AudioFrameGeneratorInterface) before instantiating PeerClient or ConferenceClient;

however, i can't find these classes in sdk, have these been removed from ? how can I customize audio input? Any suggestions ?

thanks