MprMixer.h

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//  
// Copyright (C) 2006 SIPez LLC. 
// Licensed to SIPfoundry under a Contributor Agreement. 
//
// Copyright (C) 2004-2006 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 _MprMixer_h_
#define _MprMixer_h_

// SYSTEM INCLUDES

// APPLICATION INCLUDES
#include "mp/MpFlowGraphMsg.h"
#include "mp/MpAudioResource.h"

// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// CONSTANTS
// STRUCTS
// TYPEDEFS
// FORWARD DECLARATIONS

class MprMixer : public MpAudioResource
{
/* //////////////////////////// PUBLIC //////////////////////////////////// */
public:

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


   MprMixer(const UtlString& rName, int numWeights);

   virtual
   ~MprMixer();


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


   UtlBoolean setWeights(int *newWeights, int numWeights);
   UtlBoolean setWeight(int newWeight, int weightIndex);

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



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



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

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

   typedef enum
   {
      SET_WEIGHT  = MpFlowGraphMsg::RESOURCE_SPECIFIC_START,
      SET_WEIGHTS
   } AddlMsgTypes;

   enum { MAX_MIXER_INPUTS = 10 };

   int mWeights[MAX_MIXER_INPUTS];
   int mNumWeights;
   int mScale;

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

   virtual UtlBoolean handleMessage(MpFlowGraphMsg& rMsg);

   UtlBoolean handleSetWeight(int newWeight, int weightIndex);

   UtlBoolean handleSetWeights(int *newWeights, int numWeights);

   MprMixer(const MprMixer& rMprMixer);

   MprMixer& operator=(const MprMixer& rhs);

};

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

#endif  // _MprMixer_h_