MprFromMic.h

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//  
// Copyright (C) 2006-2007 SIPez LLC. 
// Licensed to SIPfoundry under a Contributor Agreement. 
//
// Copyright (C) 2004-2007 SIPfoundry Inc.
// Licensed by SIPfoundry under the LGPL license.
//
// Copyright (C) 2004-2006 Pingtel Corp.  All rights reserved.
// Licensed to SIPfoundry under a Contributor Agreement.
//
// $$


#ifndef _MprFromMic_h_
#define _MprFromMic_h_

#define REAL_SILENCE_DETECTION

// SYSTEM INCLUDES

// APPLICATION INCLUDES
#include "os/OsDefs.h"
#include "os/OsMsgQ.h"
#include "mp/MpAudioResource.h"
#include "mp/MpCodec.h"

// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// CONSTANTS
// STRUCTS
// TYPEDEFS
typedef void (*MICDATAHOOK)(const int nLength, short* samples) ;

// FORWARD DECLARATIONS

class MprFromMic : public MpAudioResource
{
/* //////////////////////////// PUBLIC //////////////////////////////////// */
public:
   enum { MAX_MIC_BUFFERS = 10 };

/* ============================ CREATORS ================================== */


   MprFromMic(const UtlString& rName, OsMsgQ *pMicQ);

   virtual
   ~MprFromMic();


/* ============================ MANIPULATORS ============================== */



/* ============================ ACCESSORS ================================= */



/* ============================ INQUIRY =================================== */



/* //////////////////////////// PROTECTED ///////////////////////////////// */
protected:

/* //////////////////////////// PRIVATE /////////////////////////////////// */
private:

   enum{EqFilterLen = 24}; 

   OsMsgQ *mpMicQ;                
   int16_t   shpFilterBuf[80 + 10];
   int     mNumFrames;
#ifndef REAL_SILENCE_DETECTION
   unsigned long MinVoiceEnergy;  
#endif

   void  Init_highpass_filter800();
   void  highpass_filter800(int16_t *, int16_t *, short);
   MpSpeechType speech_detected(int16_t*, int);


   virtual UtlBoolean doProcessFrame(MpBufPtr inBufs[],
                                     MpBufPtr outBufs[],
                                     int inBufsSize,
                                     int outBufsSize,
                                     UtlBoolean isEnabled,
                                     int samplesPerFrame=80,
                                     int samplesPerSecond=8000);

   MprFromMic(const MprFromMic& rMprFromMic);

   MprFromMic& operator=(const MprFromMic& rhs);

public:
   static MICDATAHOOK s_fnMicDataHook ;

};

/* ============================ INLINE METHODS ============================ */

#endif  // _MprFromMic_h_