void SndFmt2WaveFmt(SNDMIXFORMAT *pfmt,WAVEFORMATEX *pwfx)
{
ASSERTPOINTER(pfmt!=NULL && pwfx!=NULL);
INITTOZERO(pwfx,sizeof(WAVEFORMATEX));
pwfx->wFormatTag = WAVE_FORMAT_PCM;
pwfx->nChannels= pfmt->nChannels;
pwfx->nSamplesPerSec=pfmt->nSamplesPerSec;
pwfx->wBitsPerSample=pfmt->wBitsPerSample;
// The nBlockAlign calculation below only works for whole-byte samples
ASSERTRANGE( pwfx->wBitsPerSample % 8 == 0 );
pwfx->nBlockAlign=pwfx->nChannels * (pwfx->wBitsPerSample / 8);
pwfx->nAvgBytesPerSec= pwfx->nBlockAlign * pwfx->nSamplesPerSec;
}
//--------------------------------------------------------------------------
// It returns the next possible format, changes only frequency, if there is!
// Return FALSE if no formats are available!
BOOL TryOtherSndFormat(SNDMIXFORMAT *pfmt)
{
int i;
ASSERTPOINTER(pfmt!=NULL);
// find the first descending frequency
for(i=N_SPS-1; i>=0; i--) {
if(nSamplesPerSecBaseV[i]>pfmt->nSamplesPerSec)
continue;
pfmt->nSamplesPerSec=nSamplesPerSecBaseV[i];
break;
}
return (i>=0);
}
aart::camera * aart_post::getactive(tbagstepper<aart::camera *> * astep) const
{
aart::camera * tmpcam ;
ASSERTPOINTER(astep) ;
tmpcam= NULL ;
if (astep-> next(tmpcam))
{
if (* mcamera)
{
while (tmpcam && strcmp(mcamera, tmpcam-> getname()))
{ if (! astep-> next(tmpcam)) tmpcam= NULL ; }
}
}
delete astep ;
return tmpcam ;
}
//--------------------------------------------------------------------------
// First check about snd card capability and change the requested format to
// the available format (without change frequency)
// Return FALSE if the snd card doesn't support any format (it's not very feasible)
BOOL MakeWaveFmtCompatible(WAVEFORMATEX *pwfx, LPDSCAPS lpdsCaps)
{
BOOL bflag=TRUE;
ASSERTPOINTER(pwfx!=NULL && lpdsCaps);
ASSERTRANGE(pwfx->nChannels==2 || pwfx->nChannels==1);
if(pwfx->nChannels==2) //STEREO
if((lpdsCaps->dwFlags & DSCAPS_PRIMARYSTEREO)==0)
pwfx->nChannels=1;
if(pwfx->nChannels==1) //MONO
if((lpdsCaps->dwFlags & DSCAPS_PRIMARYMONO)==0)
bflag=FALSE; // IT'S VERY STRANGE BUT POSSIBLE, THE SOUND CARD ISN'T GOOD ;-)
ASSERTRANGE(pwfx->wBitsPerSample==16 || pwfx->wBitsPerSample==8);
if(pwfx->wBitsPerSample==16) //16 Bit Sample
if((lpdsCaps->dwFlags & DSCAPS_PRIMARY16BIT)==0)
pwfx->wBitsPerSample=8;
if(pwfx->wBitsPerSample==8) //8 Bit Sample
if((lpdsCaps->dwFlags & DSCAPS_PRIMARY8BIT)==0)
bflag=FALSE; // IT'S VERY STRANGE BUT POSSIBLE, THE SOUND CARD ISN'T GOOD ;-)
return bflag;
}
