void IFFT_Ctor(IFFT* unit){
unit->m_wintype = (int)ZIN0(1); // wintype may be used by the base ctor
if(!FFTBase_Ctor(unit, 2)){
SETCALC(*ClearUnitOutputs);
// These zeroes are to prevent the dtor freeing things that don't exist:
unit->m_olabuf = 0;
return;
}
// This will hold the transformed and progressively overlap-added data ready for outputting.
unit->m_olabuf = (float*)RTAlloc(unit->mWorld, unit->m_audiosize * sizeof(float));
memset(unit->m_olabuf, 0, unit->m_audiosize * sizeof(float));
SCWorld_Allocator alloc(ft, unit->mWorld);
unit->m_scfft = scfft_create(unit->m_fullbufsize, unit->m_audiosize, (SCFFT_WindowFunction)unit->m_wintype, unit->m_fftsndbuf->data,
unit->m_fftsndbuf->data, kBackward, alloc);
// "pos" will be reset to zero when each frame comes in. Until then, the following ensures silent output at first:
unit->m_pos = 0; //unit->m_audiosize;
if (unit->mCalcRate == calc_FullRate) {
unit->m_numSamples = unit->mWorld->mFullRate.mBufLength;
} else {
unit->m_numSamples = 1;
}
SETCALC(IFFT_next);
}
void FFT_Ctor(FFT *unit)
{
int winType = sc_clip((int)ZIN0(3), -1, 1); // wintype may be used by the base ctor
unit->m_wintype = winType;
if(!FFTBase_Ctor(unit, 5)){
SETCALC(FFT_ClearUnitOutputs);
// These zeroes are to prevent the dtor freeing things that don't exist:
unit->m_inbuf = 0;
unit->m_scfft = 0;
return;
}
int audiosize = unit->m_audiosize * sizeof(float);
int hopsize = (int)(sc_max(sc_min(ZIN0(2), 1.f), 0.f) * unit->m_audiosize);
if (hopsize < unit->mWorld->mFullRate.mBufLength) {
Print("FFT_Ctor: hopsize smaller than SC's block size (%i) - automatically corrected.\n", hopsize, unit->mWorld->mFullRate.mBufLength);
hopsize = unit->mWorld->mFullRate.mBufLength;
} else if (((int)(hopsize / unit->mWorld->mFullRate.mBufLength)) * unit->mWorld->mFullRate.mBufLength
!= hopsize) {
Print("FFT_Ctor: hopsize (%i) not an exact multiple of SC's block size (%i) - automatically corrected.\n", hopsize, unit->mWorld->mFullRate.mBufLength);
hopsize = ((int)(hopsize / unit->mWorld->mFullRate.mBufLength)) * unit->mWorld->mFullRate.mBufLength;
}
unit->m_hopsize = hopsize;
unit->m_shuntsize = unit->m_audiosize - hopsize;
unit->m_inbuf = (float*)RTAlloc(unit->mWorld, audiosize);
SCWorld_Allocator alloc(ft, unit->mWorld);
unit->m_scfft = scfft_create(unit->m_fullbufsize, unit->m_audiosize, (SCFFT_WindowFunction)unit->m_wintype, unit->m_inbuf,
unit->m_fftsndbuf->data, kForward, alloc);
if (!unit->m_scfft) {
SETCALC(*ClearUnitOutputs);
return;
}
memset(unit->m_inbuf, 0, audiosize);
//Print("FFT_Ctor: hopsize %i, shuntsize %i, bufsize %i, wintype %i, \n",
// unit->m_hopsize, unit->m_shuntsize, unit->m_bufsize, unit->m_wintype);
if (INRATE(1) == calc_FullRate) {
unit->m_numSamples = unit->mWorld->mFullRate.mBufLength;
} else {
unit->m_numSamples = 1;
}
SETCALC(FFT_next);
}
void FFT_Ctor(FFT *unit)
{
unit->m_wintype = (int)ZIN0(3); // wintype may be used by the base ctor
if(!FFTBase_Ctor(unit, 5)){
SETCALC(FFT_ClearUnitOutputs);
// These zeroes are to prevent the dtor freeing things that don't exist:
unit->m_inbuf = 0;
unit->m_transformbuf = 0;
unit->m_scfft = 0;
return;
}
int fullbufsize = unit->m_fullbufsize * sizeof(float);
int audiosize = unit->m_audiosize * sizeof(float);
int hopsize = (int)(sc_max(sc_min(ZIN0(2), 1.f), 0.f) * unit->m_audiosize);
if (((int)(hopsize / unit->mWorld->mFullRate.mBufLength)) * unit->mWorld->mFullRate.mBufLength
!= hopsize) {
Print("FFT_Ctor: hopsize (%i) not an exact multiple of SC's block size (%i) - automatically corrected.\n", hopsize, unit->mWorld->mFullRate.mBufLength);
hopsize = ((int)(hopsize / unit->mWorld->mFullRate.mBufLength)) * unit->mWorld->mFullRate.mBufLength;
}
unit->m_hopsize = hopsize;
unit->m_shuntsize = unit->m_audiosize - hopsize;
unit->m_inbuf = (float*)RTAlloc(unit->mWorld, audiosize);
unit->m_transformbuf = (float*)RTAlloc(unit->mWorld, scfft_trbufsize(unit->m_fullbufsize));
unit->m_scfft = (scfft*)RTAlloc(unit->mWorld, sizeof(scfft));
scfft_create(unit->m_scfft, unit->m_fullbufsize, unit->m_audiosize, unit->m_wintype, unit->m_inbuf, unit->m_fftsndbuf->data, unit->m_transformbuf, true);
memset(unit->m_inbuf, 0, audiosize);
//Print("FFT_Ctor: hopsize %i, shuntsize %i, bufsize %i, wintype %i, \n",
// unit->m_hopsize, unit->m_shuntsize, unit->m_bufsize, unit->m_wintype);
if (INRATE(1) == calc_FullRate) {
unit->m_numSamples = unit->mWorld->mFullRate.mBufLength;
} else {
unit->m_numSamples = 1;
}
SETCALC(FFT_next);
}