cmAudioPort.c : Enable the input and output channels on the selected devices in cmApPortTest().

cmAudioPort.c

     if( r.inDevIdx != r.outDevIdx )
       cmApBufSetup( r.inDevIdx, r.srate, r.framesPerCycle, r.bufCnt, cmApDeviceChannelCount(r.inDevIdx,true), r.framesPerCycle, cmApDeviceChannelCount(r.inDevIdx,false), r.framesPerCycle, srateMult ); 
 
-    cmApBufEnableMeter(  r.inDevIdx, -1, kEnableApFl );
+    cmApBufEnableMeter(  r.inDevIdx,  -1, kEnableApFl | kInApFl );
+    cmApBufEnableMeter(  r.outDevIdx, -1, kEnableApFl | kOutApFl );
 
     // setup an output device
     if(cmApDeviceSetup(r.outDevIdx,r.srate,r.framesPerCycle,_cmApPortCb2,&r) != kOkApRC )