// this function is called directly by the driver whenever data is ready
// there is an anomaly in the (current version of the) Data Translation driver
// that causes this function to be called unevenly spaced in time
// this only happens under certain circumstances (i.e., number of channels,
// SampleBlockSize, and sampling frequency)
// see corresponding description in BCI2000 documentation
__stdcall BufferDone( UINT uiMsg, unsigned int Dass, LPARAM lParam )
{
ECODE status;
int arrays;
int i;
short *buffer;
HBUF hBuf;
LPHBUF lphBuf;
ULNG samples;
HDASS lphDass;
hBuf= NULL;
lphBuf= NULL;
lphDass= (void *)Dass;
status= olDaGetBuffer(lphDass, &hBuf);
if ( hBuf != NULL )
{
status= olDmGetMaxSamples(hBuf,&samples);
status= olDmGetBufferPtr( hBuf, (LPVOID FAR*)&lphBuf );
status= olDaPutBuffer(lphDass, hBuf);
buffer= (short *)lphBuf;
((DTFUN *)(lParam))->data_critsec->Acquire();
((DTFUN *)(lParam))->Add_to_data( buffer, samples ); // add data to FIFO
((DTFUN *)(lParam))->data_critsec->Release();
}
// notify ADReadDataBlock() that data is here
((DTFUN *)(lParam))->bdone->SetEvent();
return(0);
}
ECODE DTFUN::SetBuffers( DWORD BufSize )
{
int i;
ECODE retval= 0;
status= olDaSetWrapMode( lphDass, OL_WRP_MULTIPLE );
dwSize= BufSize;
for(i=0; i<BUFNUM; i++)
{
retval+= olDmAllocBuffer( 0, dwSize, &hbuf[i] );
retval+= olDaPutBuffer( lphDass, hbuf[i] );
}
retval+= olDaConfig( lphDass );
d_count= 0; // initialize data counter
BufferCount= 0;
BufferPtr= 0;
return( status );
}
void COctopusAOTF::Start( void )
{
olDaSetClockFrequency( hdass_9834, 0.25 * freq * outbuffersize );
olDmAllocBuffer( 0, outbuffersize, &hBuf_DAC );
if( hBuf_DAC == NULL )
{
AfxMessageBox(_T("Error Allocating buffer."));
return;
}
GenerateSignal();
olDaPutBuffer( hdass_9834, hBuf_DAC );
olDaConfig( hdass_9834 );
olDaStart( hdass_9834 );
B.AOTF_running = true;
m_status_AOTF.SetBitmap( m_bmp_yes );
}
