MpidAlsa.h

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//
// Copyright (C) 2007-2017 SIPez LLC.  All rights reserved.
//
// $$


#ifndef _MpidAlsa_h_
#define _MpidAlsa_h_

// SYSTEM INCLUDES
#include <pthread.h>
#include <semaphore.h>


// APPLICATION INCLUDES
#include "mp/MpInputDeviceDriver.h"
#include "mp/MpAlsa.h"

// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// CONSTANTS
#define MAX_DEVICE_NAME_SIZE 256

// STRUCTS
// TYPEDEFS
// FORWARD DECLARATIONS
class MpInputDeviceManager;
class UtlContainer;

class MpidAlsa : public MpInputDeviceDriver
{
   friend class MpAlsa;
/* //////////////////////////// PUBLIC //////////////////////////////////// */
public:

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


   MpidAlsa(const UtlString& name,
           MpInputDeviceManager& deviceManager);
   virtual ~MpidAlsa();


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


   OsStatus enableDevice(unsigned samplesPerFrame,
                         unsigned samplesPerSec,
                         MpFrameTime currentFrameTime);
   OsStatus disableDevice();

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

    static const char* getDefaultDeviceName();

    static int getDeviceNames(UtlContainer& devicesNames);

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


   inline UtlBoolean isDeviceValid();


/* //////////////////////////// PROTECTED ///////////////////////////////// */
protected:
   MpAudioSample* mAudioFrame;  
   MpAlsaContainer* mpCont; 

   OsStatus initBuffers();

   void freeBuffers();

   MpAudioSample* getBuffer();

   void pushFrame();

   void skipFrame();

/* //////////////////////////// PRIVATE /////////////////////////////////// */
private:
   MpAlsa *pDevWrapper;
   static char spDefaultDeviceName[MAX_DEVICE_NAME_SIZE];

   MpidAlsa(const MpidAlsa& rMpInputDeviceDriver);

   MpidAlsa& operator=(const MpidAlsa& rhs);

};

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

UtlBoolean MpidAlsa::isDeviceValid()
{
   //printf("MpRsIdAlsa::isDeviceValid()\n"); fflush(stdout);
   return ((pDevWrapper != NULL) && pDevWrapper->isDeviceValid());
}

#endif  // _MpidAlsa_h_