void Convolution2_next(Convolution2 *unit, int wrongNumSamples)
{
float *in1 = IN(0);
//float *in2 = IN(1);
float curtrig = ZIN0(2);
float *out1 = unit->m_inbuf1 + unit->m_pos;
// float *out2 = unit->m_inbuf2 + unit->m_pos;
int numSamples = unit->mWorld->mFullRate.mBufLength;
uint32 insize=unit->m_insize * sizeof(float);
// copy input
Copy(numSamples, out1, in1);
unit->m_pos += numSamples;
if (unit->m_prevtrig <= 0.f && curtrig > 0.f){
//float fbufnum = ZIN0(1);
//int log2n2 = unit->m_log2n;
//uint32 bufnum = (int)fbufnum;
//printf("bufnum %i \n", bufnum);
//World *world = unit->mWorld;
//if (bufnum >= world->mNumSndBufs) bufnum = 0;
//SndBuf *buf = world->mSndBufs + bufnum;
SndBuf *buf = ConvGetBuffer(unit,(uint32)ZIN0(1), "Convolution2", numSamples);
if (!buf)
return;
LOCK_SNDBUF_SHARED(buf);
memcpy(unit->m_fftbuf2, buf->data, insize);
memset(unit->m_fftbuf2+unit->m_insize, 0, insize);
//rffts(unit->m_fftbuf2, log2n2, 1, cosTable[log2n2]);
scfft_dofft(unit->m_scfft2);
}
if (unit->m_pos & unit->m_insize) {
//have collected enough samples to transform next frame
unit->m_pos = 0; //reset collection counter
// copy to fftbuf
//int log2n = unit->m_log2n;
memcpy(unit->m_fftbuf1, unit->m_inbuf1, insize);
//zero pad second part of buffer to allow for convolution
memset(unit->m_fftbuf1+unit->m_insize, 0, insize);
//if (unit->m_prevtrig <= 0.f && curtrig > 0.f)
scfft_dofft(unit->m_scfft1);
//in place transform for now
// rffts(unit->m_fftbuf1, log2n, 1, cosTable[log2n]);
//complex multiply time
int numbins = unit->m_fftsize >> 1; //unit->m_fftsize - 2 >> 1;
float * p1= unit->m_fftbuf1;
float * p2= unit->m_fftbuf2;
p1[0] *= p2[0];
p1[1] *= p2[1];
//complex multiply
for (int i=1; i<numbins; ++i) {
float real,imag;
int realind,imagind;
realind= 2*i; imagind= realind+1;
real= p1[realind]*p2[realind]- p1[imagind]*p2[imagind];
imag= p1[realind]*p2[imagind]+ p1[imagind]*p2[realind];
p1[realind] = real; //p2->bin[i];
p1[imagind]= imag;
}
//copy second part from before to overlap
memcpy(unit->m_overlapbuf, unit->m_outbuf+unit->m_insize, insize);
//inverse fft into outbuf
memcpy(unit->m_outbuf, unit->m_fftbuf1, unit->m_fftsize * sizeof(float));
//in place
//riffts(unit->m_outbuf, log2n, 1, cosTable[log2n]);
scfft_doifft(unit->m_scfftR);
// DoWindowing(log2n, unit->m_outbuf, unit->m_fftsize);
}
void Convolution2_next(Convolution2 *unit, int wrongNumSamples)
{
float *in1 = IN(0);
float curtrig = ZIN0(2);
float *inbuf1writepos = unit->m_inbuf1 + unit->m_pos;
int numSamples = unit->mWorld->mFullRate.mBufLength;
uint32 framesize = unit->m_framesize;
uint32 framesize_f = framesize * sizeof(float);
// copy input
Copy(numSamples, inbuf1writepos, in1);
unit->m_pos += numSamples;
if (unit->m_prevtrig <= 0.f && curtrig > 0.f){
SndBuf *kernelbuf = ConvGetBuffer(unit,(uint32)ZIN0(1), "Convolution2", numSamples);
if (!kernelbuf)
return;
LOCK_SNDBUF_SHARED(kernelbuf);
// we cannot use a kernel larger than the fft size, so truncate if needed. the kernel may be smaller though.
size_t kernelcopysize = sc_min(kernelbuf->frames, framesize);
memcpy(unit->m_fftbuf2, kernelbuf->data, kernelcopysize * sizeof(float));
memset(unit->m_fftbuf2 + kernelcopysize, 0, (2 * framesize - kernelcopysize) * sizeof(float));
scfft_dofft(unit->m_scfft2);
}
if (unit->m_pos >= framesize) {
//have collected enough samples to transform next frame
unit->m_pos = 0; //reset collection counter
// copy to fftbuf
memcpy(unit->m_fftbuf1, unit->m_inbuf1, framesize_f);
//zero pad second part of buffer to allow for convolution
memset(unit->m_fftbuf1+unit->m_framesize, 0, framesize_f);
scfft_dofft(unit->m_scfft1);
//complex multiply time
int numbins = unit->m_fftsize >> 1;
float * p1= unit->m_fftbuf1;
float * p2= unit->m_fftbuf2;
p1[0] *= p2[0];
p1[1] *= p2[1];
//complex multiply
for (int i=1; i<numbins; ++i) {
float real,imag;
int realind,imagind;
realind= 2*i;
imagind= realind+1;
real= p1[realind]*p2[realind]- p1[imagind]*p2[imagind];
imag= p1[realind]*p2[imagind]+ p1[imagind]*p2[realind];
p1[realind] = real;
p1[imagind]= imag;
}
//copy second part from before to overlap
memcpy(unit->m_overlapbuf, unit->m_outbuf+unit->m_framesize, framesize_f);
//inverse fft into outbuf
scfft_doifft(unit->m_scfftR);
}
