MpidAndroid.h

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//  
// Copyright (C) 2010 SIPez LLC. 
// Licensed to SIPfoundry under a Contributor Agreement. 
//
// Copyright (C) 2010 SIPfoundry Inc.
// Licensed by SIPfoundry under the LGPL license.
//
// $$

// Author: Alexander Chemeris <Alexander DOT Chemeris AT SIPez DOT com>

#ifndef _MpidAndroid_h_
#define _MpidAndroid_h_

// SIPX INCLUDES
#include <mp/MpInputDeviceDriver.h>
#include <mp/MpAndroidAudioRecord.h>

// SYSTEM INCLUDES
#include <utils/threads.h>

// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// CONSTANTS
// STRUCTS
// TYPEDEFS
// FORWARD DECLARATIONS
class MpResamplerBase;
using namespace android;

class MpidAndroid : public MpInputDeviceDriver
{
/* //////////////////////////// PUBLIC //////////////////////////////////// */
public:

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


   enum audio_source {
      AUDIO_SOURCE_DEFAULT = 0,
      AUDIO_SOURCE_MIC = 1,
      AUDIO_SOURCE_VOICE_UPLINK = 2,      // Don't work on Droid/Milestone
      AUDIO_SOURCE_VOICE_DOWNLINK = 3,    // Don't work on Droid/Milestone
      AUDIO_SOURCE_VOICE_CALL = 4,        // Don't work on Droid/Milestone
      AUDIO_SOURCE_CAMCORDER = 5,         // Seems equal to MIC on Droid/Milestone
      AUDIO_SOURCE_VOICE_RECOGNITION = 6, // Seems equal to MIC on Droid/Milestone
      AUDIO_SOURCE_MAX = AUDIO_SOURCE_VOICE_RECOGNITION,

      AUDIO_SOURCE_LIST_END  // must be last - used to validate audio source type
   };

    MpidAndroid(audio_source source,
                MpInputDeviceManager& deviceManager);
    virtual
    ~MpidAndroid();


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


    virtual OsStatus enableDevice(unsigned samplesPerFrame, 
                                  unsigned samplesPerSec,
                                  MpFrameTime currentFrameTime=0);

    virtual OsStatus disableDevice();


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



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


    virtual UtlBoolean isDeviceValid();


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

   enum DriverState {
      DRIVER_IDLE,      
      DRIVER_INIT,      
      DRIVER_STARTING,  
      DRIVER_RECORDING, 
      DRIVER_STOPPING,  
      DRIVER_STOPPED,   
   };

   audio_source mStreamSource; 
   DriverState mState;         

   MpAndroidAudioRecord *mpAudioRecord; 
   int mSamplesPerSecInternal; 
   int mSamplesPerFrameInternal; 
   MpAudioSample *mpBufInternal; 
   int mBufInternalSamples;    
   Mutex mLock;                
   Condition mWaitCbkCond;     
   MpResamplerBase *mpResampler; 
   MpAudioSample *mpResampleBuf; 

   static const int mpSampleRatesList[]; 
   static const int mSampleRatesListLen; 

   bool initAudioRecord();

   bool probeSampleRate(int targetRate, int targetFrameSize,
                        const int *ratesList, int ratesListLen,
                        bool probeDefault=true);

   static void audioCallback(int event, void* user, void *info);

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

    MpidAndroid(const MpidAndroid& rMpidAndroid);

    MpidAndroid& operator=(const MpidAndroid& rhs);
};

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

#endif  // _MpidAndroid_h_