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//////////////////////////////////////////////////////////////////////////
HINSTANCE pPaDll;
/*
the function pointers to the PortAudio DLLs
*/
PaError (__cdecl* Pa_Initialize)( void );
PaError (__cdecl* Pa_Terminate)( void );
long (__cdecl* Pa_GetHostError)( void );
const char* (__cdecl* Pa_GetErrorText)( PaError );
int (__cdecl* Pa_CountDevices)(void);
PaDeviceID (__cdecl* Pa_GetDefaultInputDeviceID)( void );
PaDeviceID (__cdecl* Pa_GetDefaultOutputDeviceID)( void );
const PaDeviceInfo* (__cdecl* Pa_GetDeviceInfo)( PaDeviceID);
PaError (__cdecl* Pa_OpenStream)(
PortAudioStream ** ,
PaDeviceID ,
int ,
PaSampleFormat ,
void *,
PaDeviceID ,
int ,
PaSampleFormat ,
void *,
double ,
unsigned long ,
unsigned long ,
unsigned long ,
PortAudioCallback *,
void * );
PaError (__cdecl* Pa_OpenDefaultStream)( PortAudioStream** stream,
int numInputChannels,
int numOutputChannels,
PaSampleFormat sampleFormat,
double sampleRate,
unsigned long framesPerBuffer,
unsigned long numberOfBuffers,
PortAudioCallback *callback,
void *userData );
PaError (__cdecl* Pa_CloseStream)( PortAudioStream* );
PaError (__cdecl* Pa_StartStream)( PortAudioStream *stream );
PaError (__cdecl* Pa_StopStream)( PortAudioStream *stream );
PaError (__cdecl* Pa_AbortStream)( PortAudioStream *stream );
PaError (__cdecl* Pa_StreamActive)( PortAudioStream *stream );
PaTimestamp (__cdecl* Pa_StreamTime)( PortAudioStream *stream );
double (__cdecl* Pa_GetCPULoad)( PortAudioStream* stream );
int (__cdecl* Pa_GetMinNumBuffers)( int framesPerBuffer, double sampleRate );
void (__cdecl* Pa_Sleep)( long msec );
PaError (__cdecl* Pa_GetSampleSize)( PaSampleFormat format );
//////////////////////////////////////////////////////////////////////////
...
ZERROR AudioEngine::DirectXSupport(ZBOOL bSupDX)
{
if (bSupDX)
if (CheckForDirectXSupport())
bSupportDirectX = _TRUE;
else
return _NO_SOUND;
else
bSupportDirectX = _FALSE;
return _NO_ERROR;
}
ZBOOL AudioEngine::CheckForDirectXSupport()
{
HMODULE pTestDXLib;
FARPROC pFunctionality;
pTestDXLib=LoadLibrary("DSOUND");
if (pTestDXLib!=NULL) // check if there is a DirectSound
{
pFunctionality = GetProcAddress(pTestDXLib, (char*) 7);
if (pFunctionality!=NULL)
{
FreeLibrary(pTestDXLib);
return _TRUE;
}
else
{
FreeLibrary(pTestDXLib);
return _FALSE;
}
}
else
return _FALSE;
}
ZERROR AudioEngine::LoadPALib()
{
#ifdef _DEBUG
if (bSupportDirectX)
pPaDll = LoadLibrary("PA_DXD");
else
pPaDll = LoadLibrary("PA_MMED");
#else
if (bSupportDirectX)
pPaDll = LoadLibrary("PA_DX");
else
pPaDll = LoadLibrary("PA_MME");
#endif
if (pPaDll!=NULL)
{
Pa_Initialize = (int (__cdecl*)(void))GetProcAddress(pPaDll,"Pa_Initialize");
Pa_Terminate = (int (__cdecl*)(void))GetProcAddress(pPaDll,"Pa_Terminate");
Pa_GetHostError = (long (__cdecl* )( void )) GetProcAddress(pPaDll,"Pa_GetHostError");
Pa_GetErrorText = (const char* (__cdecl* )( PaError )) GetProcAddress(pPaDll,"Pa_GetErrorText");
Pa_CountDevices = (int (__cdecl*)(void))GetProcAddress(pPaDll,"Pa_CountDevices");
Pa_GetDefaultInputDeviceID = (int (__cdecl*)(void))GetProcAddress(pPaDll,"Pa_GetDefaultInputDeviceID");
Pa_GetDefaultOutputDeviceID = (int (__cdecl*)(void))GetProcAddress(pPaDll,"Pa_GetDefaultOutputDeviceID");
Pa_GetDeviceInfo = (const PaDeviceInfo* (__cdecl* )( PaDeviceID)) GetProcAddress(pPaDll,"Pa_GetDeviceInfo");
Pa_OpenStream = ( PaError (__cdecl* )(
PortAudioStream ** ,
PaDeviceID ,
int ,
PaSampleFormat ,
void *,
PaDeviceID ,
int ,
PaSampleFormat ,
void *,
double ,
unsigned long ,
unsigned long ,
unsigned long ,
PortAudioCallback *,
void * )) GetProcAddress(pPaDll,"Pa_OpenStream");
Pa_OpenDefaultStream = (PaError (__cdecl* )( PortAudioStream** ,
int ,
int ,
PaSampleFormat ,
double ,
unsigned long ,
unsigned long ,
PortAudioCallback *,
void * )) GetProcAddress(pPaDll,"Pa_OpenDefaultStream");
Pa_CloseStream = (PaError (__cdecl* )( PortAudioStream* )) GetProcAddress(pPaDll,"Pa_CloseStream");
Pa_StartStream = (PaError (__cdecl* )( PortAudioStream* )) GetProcAddress(pPaDll,"Pa_StartStream");
Pa_StopStream = (PaError (__cdecl* )( PortAudioStream* ))GetProcAddress(pPaDll,"Pa_StopStream");
Pa_AbortStream = (PaError (__cdecl* )( PortAudioStream* )) GetProcAddress(pPaDll,"Pa_AbortStream");
Pa_StreamActive = (PaError (__cdecl* )( PortAudioStream* )) GetProcAddress(pPaDll,"Pa_StreamActive");
Pa_StreamTime = (PaTimestamp (__cdecl* )( PortAudioStream *))GetProcAddress(pPaDll,"Pa_StreamTime");
Pa_GetCPULoad = (double (__cdecl* )( PortAudioStream* ))GetProcAddress(pPaDll,"Pa_GetCPULoad");
Pa_GetMinNumBuffers = (int (__cdecl* )( int , double )) GetProcAddress(pPaDll,"Pa_GetMinNumBuffers");
Pa_Sleep = (void (__cdecl* )( long )) GetProcAddress(pPaDll,"Pa_Sleep");
Pa_GetSampleSize = (PaError (__cdecl* )( PaSampleFormat )) GetProcAddress(pPaDll,"Pa_GetSampleSize");
return _NO_ERROR;
}
else
return _DLL_NOT_FOUND;
}
ZERROR AudioEngine::UnLoadPALib()
{
if (pPaDll!=NULL)
FreeLibrary(pPaDll);
return _NO_ERROR;
}
...
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