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/*
Copyright (C) 2014 Waves Audio Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
//----------------------------------------------------------------------------------
//
//
//! \file WCMRPortAudioDeviceManager.h
//!
//! WCMRPortAudioDeviceManager and related class declarations
//!
//---------------------------------------------------------------------------------*/
#ifndef __WCMRPortAudioDeviceManager_h_
#define __WCMRPortAudioDeviceManager_h_
#include "WCMRAudioDeviceManager.h"
#include "WCMRNativeAudio.h"
#include "portaudio.h"
//forward decl.
class WCMRPortAudioDeviceManager;
//! Manages a port audio device, providing information
//! about the device, and managing audio callbacks.
class WCMRPortAudioDevice : public WCMRNativeAudioDevice
{
public:
WCMRPortAudioDevice (WCMRPortAudioDeviceManager *pManager, unsigned int deviceID, bool useMultiThreading = true, bool bNoCopy = false);///<Constructor
virtual ~WCMRPortAudioDevice ();///<Destructor
virtual int CurrentSamplingRate(); ///<Current Sampling rate.?
virtual WTErr SetCurrentSamplingRate(int newRate);///<Change Current Sampling Rate : This is a requset, might not be successful at run time!
virtual int CurrentBufferSize();///<Current Buffer Size.? - note that this may change with change in sampling rate.
virtual WTErr SetCurrentBufferSize (int newSize);///<Change Current Buffer Size : This is a requset, might not be successful at run time!
virtual ConnectionStates ConnectionStatus();///< Connection Status - device available, gone, disconnected
virtual WTErr SetActive (bool newState);///<Prepare/Activate device.
virtual WTErr SetStreaming (bool newState);///<Start/Stop Streaming - should reconnect connections when streaming starts!
virtual WTErr SetMonitorChannels (int leftChannel, int rightChannel);///<Set monitor channels. - optional, will not be available with AG
virtual WTErr SetMonitorGain (float newGain);///<Set monitor gain. - optional, will not be available with AG
virtual WTErr ShowConfigPanel (void *pParam);///< Show Control Panel - in case of ASIO this will work only with Active device!
virtual int AudioCallback (const float *pInputBuffer, float *pOutputBuffer, unsigned long framesPerBuffe, bool dropsDetectedr);
virtual WTErr UpdateDeviceInfo ();
virtual WTErr ResetDevice();
#ifdef PLATFORM_WINDOWS
static long StaticASIOMessageHook (void *pRefCon, long selector, long value, void* message, double* opt);
long ASIOMessageHook (long selector, long value, void* message, double* opt);
#endif //PLATFORM_WINDOWS
protected:
static DWORD WINAPI __DoIdle__(LPVOID lpThreadParameter);
// Methods which are executed by device processing thread
WTErr DoIdle();///<Do Idle Processing
void initDevice();
void terminateDevice();
void updateDeviceInfo(bool callerIsWaiting = false);
void activateDevice(bool callerIsWaiting = false);
void deactivateDevice(bool callerIsWaiting = false);
void startStreaming(bool callerIsWaiting = false);
void stopStreaming(bool callerIsWaiting = false);
void resetDevice (bool callerIsWaiting = false);///<Reset device - close and reopen stream, update device information!
PaError testStateValidness(int sampleRate, int bufferSize);
///////////////////////////////////////////////////////////
static int TheCallback (const void *pInputBuffer, void *pOutputBuffer, unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* /*pTimeInfo*/, PaStreamCallbackFlags /*statusFlags*/, void *pUserData );
unsigned int m_DeviceID; ///< The PA device id
PaStream* m_PortAudioStream; ///< Port audio stream, when the device is active!
bool m_StopRequested; ///< should be set to true when want to stop, set to false otherwise.
const float *m_pInputData; ///< This is what came in with the most recent callback.
int64_t m_SampleCounter; ///< The current running sample counter, updated by the audio callback.
int64_t m_SampleCountAtLastIdle;
int m_DropsDetected; ///< Number of times audio drops have been detected so far.
int m_DropsReported; ///< Number of times audio drops have been reported so far to the client.
bool m_IgnoreThisDrop; ///< Allows disregarding the first drop
int m_BufferSizeChangeRequested;
int m_BufferSizeChangeReported;
int m_ResetRequested;
int m_ResetReported;
int m_ResyncRequested;
int m_ResyncReported;
HANDLE m_hDeviceProcessingThread;
DWORD m_DeviceProcessingThreadID;
///< Backend request events
HANDLE m_hResetRequestedEvent;
HANDLE m_hResetDone;
HANDLE m_hUpdateDeviceInfoRequestedEvent;
HANDLE m_hUpdateDeviceInfoDone;
HANDLE m_hActivateRequestedEvent;
HANDLE m_hActivationDone;
HANDLE m_hDeActivateRequestedEvent;
HANDLE m_hDeActivationDone;
HANDLE m_hStartStreamingRequestedEvent;
HANDLE m_hStartStreamingDone;
HANDLE m_hStopStreamingRequestedEvent;
HANDLE m_hStopStreamingDone;
/////////////////////////
///< Device request events
HANDLE m_hResetFromDevRequestedEvent;
HANDLE m_hBufferSizeChangedEvent;
HANDLE m_hSampleRateChangedEvent;
/////////////////////////////
///< Sync events
HANDLE m_hDeviceInitialized;
HANDLE m_hExitIdleThread;
//Should be set if the device connection status is "DeviceErrors"
WTErr m_lastErr;
};
//! WCMRPortAudioDeviceManager
/*! The PortAudio Device Manager class */
class WCMRPortAudioDeviceManager : public WCMRAudioDeviceManager
{
public:
WCMRPortAudioDeviceManager(WCMRAudioDeviceManagerClient *pTheClient, eAudioDeviceFilter eCurAudioDeviceFilter,
bool useMultithreading = true, bool bNocopy = false); ///< constructor
virtual ~WCMRPortAudioDeviceManager(void); ///< destructor
protected:
virtual WCMRAudioDevice* initNewCurrentDeviceImpl(const std::string & deviceName);
virtual void destroyCurrentDeviceImpl();
virtual WTErr generateDeviceListImpl(); // use this in derived class to fill device list
virtual WTErr updateDeviceListImpl() {return eNoErr; } // not supported
virtual WTErr getDeviceBufferSizesImpl(const std::string & deviceName, std::vector<int>& buffers) const;
virtual WTErr getDeviceSampleRatesImpl(const std::string & deviceName, std::vector<int>& sampleRates) const;
bool m_UseMultithreading; ///< Flag indicates whether to use multi-threading for audio processing.
bool m_bNoCopyAudioBuffer;
private:
// helper functions for this class only
WTErr getDeviceAvailableSampleRates(DeviceID deviceId, std::vector<int>& sampleRates);
WTErr getDeviceAvailableBufferSizes(DeviceID deviceId, std::vector<int>& buffers);
WCMRAudioDevice* m_NoneDevice;
};
#endif //#ifndef __WCMRPortAudioDeviceManager_h_
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