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/*
pstream.c:
Copyright (C) 2001 Richard Dobson, John ffitch
This file is part of Csound.
The Csound Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
/* TODO:
split into two files: pvsimp.c for just the CARL anal/synth code, under LGPL,
pvsops.c for everythng else, under ????
*/
#include "csoundCore.h"
#include "pstream.h"
#include "pvfileio.h"
#ifdef _DEBUG
#include <assert.h>
#endif
int32_t fsigs_equal(const PVSDAT *f1, const PVSDAT *f2)
{
if ((f1->overlap == f2->overlap)
&& (f1->winsize == f2->winsize)
&& (f1->wintype == f2->wintype) /* harsh, maybe... */
&& (f1->N == f2->N)
&& (f1->format == f2->format)
&& (f1->sliding == f2->sliding)
)
return 1;
return 0;
}
/* Pandora's box opcode, but we can make it at least plausible,
by forbidding copy to different format. */
int32_t fassign_set(CSOUND *csound, FASSIGN *p)
{
int32_t N = p->fsrc->N;
p->fout->N = N;
p->fout->overlap = p->fsrc->overlap;
p->fout->winsize = p->fsrc->winsize;
p->fout->wintype = p->fsrc->wintype;
p->fout->format = p->fsrc->format;
p->fout->sliding = p->fsrc->sliding;
/* sliding needs to be checked */
if (p->fsrc->sliding) {
p->fout->NB = p->fsrc->NB;
csound->AuxAlloc(csound, (N + 2) * sizeof(MYFLT) * csound->ksmps,
&p->fout->frame);
return OK;
}
if (p->fsrc->format < 0){
p->fout->frame.auxp = p->fsrc->frame.auxp;
p->fout->frame.size = p->fsrc->frame.size;
//csound->Message(csound, Str("fsig = : init\n"));
}
else
csound->AuxAlloc(csound, (N + 2) * sizeof(float), &p->fout->frame);
p->fout->framecount = 1;
//csound->Message(csound, Str("fsig = : init\n"));
return OK;
}
int32_t fassign(CSOUND *csound, FASSIGN *p)
{
int32_t framesize;
float *fout,*fsrc;
fout = (float *) p->fout->frame.auxp;
fsrc = (float *) p->fsrc->frame.auxp;
if (fout == fsrc) {
//csound->Message(csound, Str("fsig = : no cpy\n"));
return OK;
}
// if (UNLIKELY(!fsigs_equal(p->fout,p->fsrc)))
//return csound->PerfError(csound,&(p->h),
// Str("fsig = : formats are different.\n"));
if (p->fsrc->sliding) {
memcpy(p->fout->frame.auxp, p->fsrc->frame.auxp,
sizeof(MYFLT)*(p->fsrc->N+2)*csound->ksmps);
return OK;
}
framesize = p->fsrc->N + 2;
if (p->fout->framecount == p->fsrc->framecount) {/* avoid duplicate copying*/
memcpy(fout, fsrc, framesize*sizeof(float));
p->fout->framecount++;
}
return OK;
}
/************* OSCBANK SYNTH ***********/
int32_t pvadsynset(CSOUND *csound, PVADS *p)
{
/* get params from input fsig */
/* we trust they are legit! */
int32_t i;
PVSDAT *fs = p->fsig;
int32_t N = fs->N;
int32_t noscs,n_oscs;
int32_t startbin,binoffset;
MYFLT *p_x;
if (UNLIKELY(fs->sliding))
return csound->InitError(csound, Str("Sliding version not yet available"));
p->overlap = fs->overlap;
/* a moot question, whether window params are relevant for adsyn?*/
/* but for now, we validate all params in fsig */
p->winsize = fs->winsize;
p->wintype = fs->wintype;
p->fftsize = N;
noscs = N/2 + 1; /* max possible */
n_oscs = (int32_t) *p->n_oscs; /* user param*/
if (UNLIKELY(n_oscs <=0))
csound->InitError(csound, Str("pvadsyn: bad value for inoscs\n"));
/* remove this when I know how to do it... */
if (UNLIKELY(fs->format != PVS_AMP_FREQ))
return csound->InitError(csound,
Str("pvadsyn: format must be amp-freq (0).\n"));
p->format = fs->format;
/* interesting question: could noscs be krate variable?
* answer: yes, but adds complexity to oscbank,
as have to set/reset each osc when started and stopped */
/* check bin params */
startbin = (int32_t) *p->ibin; /* default 0 */
binoffset = (int32_t) *p->ibinoffset; /* default 1 */
if (UNLIKELY(startbin < 0 || startbin > noscs))
return csound->InitError(csound,
Str("pvsadsyn: ibin parameter out of range.\n"));
if (UNLIKELY(startbin + n_oscs > noscs))
return csound->InitError(csound,
Str("pvsadsyn: ibin + inoscs too large.\n"));
/* calc final max bin target */
p->maxosc = startbin + (n_oscs * binoffset);
if (UNLIKELY(p->maxosc > noscs))
return csound->InitError(csound, Str("pvsadsyn: "
"ibin + (inoscs * ibinoffset) too large."));
p->outptr = 0;
p->lastframe = 0;
/* p->one_over_sr = (float) csound->onedsr; */
/* p->pi_over_sr = (float) csound->pidsr; */
p->one_over_overlap = (float)(FL(1.0) / p->overlap);
/* alloc for all oscs;
in case we can do something with them dynamically, one day */
csound->AuxAlloc(csound, noscs * sizeof(MYFLT),&p->a);
csound->AuxAlloc(csound, noscs * sizeof(MYFLT),&p->x);
csound->AuxAlloc(csound, noscs * sizeof(MYFLT),&p->y);
csound->AuxAlloc(csound, noscs * sizeof(MYFLT),&p->amps);
csound->AuxAlloc(csound, noscs * sizeof(MYFLT),&p->lastamps);
csound->AuxAlloc(csound, noscs * sizeof(MYFLT),&p->freqs);
csound->AuxAlloc(csound, p->overlap * sizeof(MYFLT),&p->outbuf);
/* initialize oscbank */
p_x = (MYFLT *) p->x.auxp;
for (i=0;i < noscs;i++)
p_x[i] = FL(1.0);
return OK;
}
/* c/o John Lazzaro, for SAOL, and many other sources */
static inline MYFLT fastoscil(MYFLT *a, MYFLT *x, MYFLT *y)
{
*x = *x - *a * *y;
*y = *y + *a * *x;
/* expensive, but worth it for evenness ? */
if (*y < FL(-1.0)) *y = FL(-1.0);
if (*y > FL(1.0)) *y = FL(1.0);
return *y;
}
static void adsyn_frame(CSOUND *csound, PVADS *p)
{
int32_t i,j;
int32_t startbin,lastbin,binoffset;
MYFLT *outbuf = (MYFLT *) (p->outbuf.auxp);
float *frame; /* RWD MUST be 32bit */
MYFLT *a,*x,*y;
MYFLT *amps,*freqs,*lastamps;
MYFLT ffac = *p->kfmod;
MYFLT nyquist = csound->esr * FL(0.5);
/* we add to outbuf, so clear it first*/
memset(p->outbuf.auxp,0,p->overlap * sizeof(MYFLT));
frame = (float *) p->fsig->frame.auxp;
a = (MYFLT *) p->a.auxp;
x = (MYFLT *) p->x.auxp;
y = (MYFLT *) p->y.auxp;
amps = (MYFLT *) p->amps.auxp;
freqs = (MYFLT *) p->freqs.auxp;
lastamps = (MYFLT *) p->lastamps.auxp;
startbin = (int32_t) *p->ibin;
binoffset = (int32_t) *p->ibinoffset;
lastbin = p->maxosc;
/*update amps, freqs*/
for (i=startbin;i < lastbin;i+= binoffset) {
amps[i] = frame[i*2];
/* lazy: force all freqs positive! */
freqs[i] = ffac * FABS(frame[(i*2)+1]);
/* kill stuff over Nyquist. Need to worry about vlf values? */
if (freqs[i] > nyquist)
amps[i] = FL(0.0);
a[i] = FL(2.0) * SIN(freqs[i] * csound->pidsr);
}
/* we need to interp amplitude, but seems we can avoid doing freqs too,
for pvoc so can use direct calc for speed.
But large overlap size is not a good idea.
If compiler cannot inline fastoscil,
would be worth doing so by hand here ?
*/
for (i=startbin;i < lastbin;i+=binoffset) {
MYFLT thisamp = lastamps[i];
MYFLT delta_amp = (amps[i] - thisamp) * p->one_over_overlap;
for (j=0;j < p->overlap;j++) {
outbuf[j] += thisamp * fastoscil(a+i,x+i,y+i);
thisamp += delta_amp;
}
lastamps[i] = amps[i];
}
}
static MYFLT adsyn_tick(CSOUND *csound, PVADS *p)
{
MYFLT *outbuf = (MYFLT *) (p->outbuf.auxp);
if (p->outptr== p->fsig->overlap) {
adsyn_frame(csound, p);
p->outptr = 0;
p->lastframe = p->fsig->framecount;
}
return outbuf[p->outptr++];
}
int32_t pvadsyn(CSOUND *csound, PVADS *p)
{
uint32_t offset = p->h.insdshead->ksmps_offset;
uint32_t early = p->h.insdshead->ksmps_no_end;
uint32_t i, nsmps = CS_KSMPS;
MYFLT *aout = p->aout;
if (UNLIKELY(p->outbuf.auxp==NULL)) {
return csound->PerfError(csound,&(p->h),
Str("pvsynth: Not initialised.\n"));
}
if (UNLIKELY(offset)) memset(aout, '\0', offset*sizeof(MYFLT));
if (UNLIKELY(early)) {
nsmps -= early;
memset(&aout[nsmps], '\0', early*sizeof(MYFLT));
}
for (i=offset;i < nsmps;i++)
aout[i] = adsyn_tick(csound, p);
return OK;
}
/******* PVSCROSS ***********/
int32_t pvscrosset(CSOUND *csound, PVSCROSS *p)
{
PVSDAT *fsrc = p->fsrc;
PVSDAT *fout = p->fout;
int32_t N = fsrc->N;
/* source fsig */
p->overlap = fsrc->overlap;
p->winsize = fsrc->winsize;
p->wintype = fsrc->wintype;
p->fftsize = N;
p->format = fsrc->format;
/* make sure fdest is same format */
if (UNLIKELY(!fsigs_equal(fsrc,p->fdest)))
return csound->InitError(csound, Str("pvscross: source and dest signals "
"must have same format\n"));
fout->N = N;
fout->overlap = p->overlap;
fout->winsize = p->winsize;
fout->wintype = p->wintype;
fout->format = p->format;
// fout->format = p->fsrc->sliding;
if (fsrc->sliding) {
fout->NB = fsrc->NB;
csound->AuxAlloc(csound, (N + 2) * sizeof(MYFLT) * CS_KSMPS,
&fout->frame);
return OK;
}
/* setup output signal */
/* RWD MUST be 32bit */
csound->AuxAlloc(csound, (N + 2) * sizeof(float), &fout->frame);
fout->framecount = 1;
p->lastframe = 0;
return OK;
}
int32_t pvscross(CSOUND *csound, PVSCROSS *p)
{
int32_t i,N = p->fftsize;
MYFLT amp1 = FABS(*p->kamp1);
MYFLT amp2 = FABS(*p->kamp2);
float *fsrc = (float *) p->fsrc->frame.auxp; /* RWD all must be 32bit */
float *fdest = (float *) p->fdest->frame.auxp;
float *fout = (float *) p->fout->frame.auxp;
if (UNLIKELY(fout==NULL))
return csound->PerfError(csound,&(p->h),
Str("pvscross: not initialised\n"));
/* make sure sigs have same format as output */
if (UNLIKELY(!fsigs_equal(p->fout,p->fsrc)))
return csound->PerfError(csound,&(p->h),
Str("pvscross: mismatch in fsrc format\n"));
if (UNLIKELY(!fsigs_equal(p->fout,p->fdest)))
return csound->PerfError(csound,&(p->h),
Str("pvscross: mismatch in fdest format\n"));
if (p->fsrc->sliding) {
CMPLX *fout, *fsrc, *fdest;
uint32_t offset = p->h.insdshead->ksmps_offset;
uint32_t early = p->h.insdshead->ksmps_no_end;
uint32_t n, nsmps = CS_KSMPS;
int32_t NB = p->fsrc->NB;
nsmps -= early;
for (n=offset; n<nsmps; n++) {
fsrc = (CMPLX *) p->fsrc->frame.auxp +n*NB; /* RWD all must be 32bit */
fdest = (CMPLX *) p->fdest->frame.auxp +n*NB;
fout = (CMPLX *) p->fout->frame.auxp +n*NB;
for (i=0; i<NB;i++) {
fout[i].re = (fsrc[i].re * amp1) + (fdest[i].re * amp2);
/* copy src freqs to output, unmodified */
fout[i].im = fsrc[i].im;
}
}
return OK;
}
/* only process when a new frame is ready */
if (p->lastframe < p->fsrc->framecount) {
#ifdef _DEBUG
assert(p->fsrc->framecount==p->fdest->framecount);
#endif
for (i=0;i < N+2;i+=2) {
fout[i] = (float) ((fsrc[i] * amp1) + (fdest[i] * amp2));
/* copy src freqs to output, unmodified */
fout[i+1] = (float) fsrc[i+1];
}
p->fout->framecount = p->lastframe = p->fsrc->framecount;
}
return OK;
}
/******** PVSFREAD ************/
static int32_t pvsfreadset_(CSOUND *csound, PVSFREAD *p, int32_t stringname)
{
PVOCEX_MEMFILE pp;
uint32 N;
char pvfilnam[MAXNAME];
if (stringname) strNcpy(pvfilnam, ((STRINGDAT*)p->ifilno)->data, MAXNAME-1);
else if (csound->ISSTRCOD(*p->ifilno))
strNcpy(pvfilnam, get_arg_string(csound, *p->ifilno), MAXNAME-1);
else csound->strarg2name(csound, pvfilnam, p->ifilno, "pvoc.", 0);
if (UNLIKELY(PVOCEX_LoadFile(csound, pvfilnam, &pp) != 0)) {
return csound->InitError(csound, Str("Failed to load PVOC-EX file"));
}
p->ptr = 0;
p->overlap = pp.overlap;
p->winsize = pp.winsize;
p->fftsize = pp.fftsize;
p->wintype = pp.wintype;
p->format = pp.format;
p->chans = pp.chans;
p->nframes = pp.nframes;
p->arate = csound->esr / (MYFLT) pp.overlap;
p->membase = (float*) pp.data;
if (UNLIKELY(p->overlap < (int32_t)CS_KSMPS || p->overlap < 10))
return csound->InitError(csound, Str("Sliding version not yet available"));
if (UNLIKELY(p->nframes <= 0))
return csound->InitError(csound, Str("pvsfread: file is empty!\n"));
/* special case if only one frame - it is an impulse response */
if (UNLIKELY(p->nframes == 1))
return csound->InitError(csound, Str("pvsfread: file has only one frame "
"(= impulse response).\n"));
if (UNLIKELY(p->overlap < (int32_t)CS_KSMPS))
return csound->InitError(csound, Str("pvsfread: analysis frame overlap "
"must be >= ksmps\n"));
p->blockalign = (p->fftsize+2) * p->chans;
if (UNLIKELY((*p->ichan) >= p->chans))
return csound->InitError(csound, Str("pvsfread: ichan value exceeds "
"file channel count.\n"));
if (UNLIKELY((int32_t) (*p->ichan) < 0))
return csound->InitError(csound,
Str("pvsfread: ichan cannot be negative.\n"));
N = p->fftsize;
/* setup output signal */
csound->AuxAlloc(csound, (N + 2) * sizeof(float), &p->fout->frame);
/* init sig with first frame from file,
regardless (always zero amps, but with bin freqs) */
p->chanoffset = (int32_t) MYFLT2LRND(*p->ichan) * (N + 2);
memcpy((float *) p->fout->frame.auxp, /* RWD MUST be 32bit */
(float *) pp.data + (int32_t) p->chanoffset, /* RWD MUST be 32bit */
(size_t) ((int32_t) (N + 2) * (int32_t) sizeof(float)));
p->membase += p->blockalign; /* move to 2nd frame in file, as startpoint */
p->nframes--;
p->fout->N = N;
p->fout->overlap = p->overlap;
p->fout->winsize = p->winsize;
p->fout->wintype = p->wintype;
p->fout->format = p->format;
p->fout->framecount = 1;
p->lastframe = 0;
return OK;
}
int32_t pvsfreadset(CSOUND *csound, PVSFREAD *p){
return pvsfreadset_(csound,p, 0);
}
int32_t pvsfreadset_S(CSOUND *csound, PVSFREAD *p){
return pvsfreadset_(csound,p, 1);
}
int32_t pvsfread(CSOUND *csound, PVSFREAD *p)
{
int32_t i,j;
MYFLT pos = *p->kpos;
MYFLT framepos,frac;
int32_t frame1pos,/*frame2pos,*/framesize,n_mcframes;
float *pmem,*pframe1,*pframe2; /* RWD all MUST be 32bit */
float *fout = (float *) p->fout->frame.auxp;
if (UNLIKELY(fout==NULL))
return csound->PerfError(csound,&(p->h),
Str("pvsfread: not initialised.\n"));
pmem = (float *) p->membase;
framesize = p->fftsize+2;
n_mcframes = p->nframes / p->chans;
if (p->ptr>=p->overlap) {
if (UNLIKELY(pos < FL(0.0)))
pos = FL(0.0); /* or report as error... */
framepos = pos * p->arate;
frame1pos = (int32_t) framepos;
if (frame1pos>= n_mcframes -1) {
/* just return final frame */
pframe1 = pmem + (p->blockalign * (n_mcframes -1)) + p->chanoffset;
/* for (i=0;i < framesize;i++) */
/* *fout++ = *pframe1++; */
memcpy(fout, pframe1, sizeof(float)*framesize);
}
else {
/* gotta interpolate */
/* any optimizations possible here ?
Avoid v samll frac values ? higher-order interp ? */
//frame2pos = frame1pos+p->chans;
frac = framepos - (MYFLT) frame1pos;
pframe1 = pmem + (frame1pos * p->blockalign) + p->chanoffset;
pframe2 = pframe1 + p->blockalign;
for (i=0;i < framesize;i+=2) {
MYFLT amp,freq;
j = i+1;
amp = pframe1[i] + frac * (pframe2[i] - pframe1[i]);
freq = pframe1[j] + frac * (pframe2[j] - pframe1[j]);
fout[i] = (float) amp;
fout[j] = (float) freq;
}
}
p->ptr -= p->overlap;
p->fout->framecount++;
p->lastframe = p->fout->framecount;
}
p->ptr += CS_KSMPS;
return OK;
}
/************* PVSMASKA ****************/
int32_t pvsmaskaset(CSOUND *csound, PVSMASKA *p)
{
uint32_t i;
MYFLT *ftable;
uint32_t N = p->fsrc->N;
uint32_t nbins = N/2 + 1;
/* source fsig */
p->overlap = p->fsrc->overlap;
p->winsize = p->fsrc->winsize;
p->wintype = p->fsrc->wintype;
p->format = p->fsrc->format;
p->fftsize = N;
if (UNLIKELY(!(p->format==PVS_AMP_FREQ) || (p->format==PVS_AMP_PHASE)))
return csound->InitError(csound, Str("pvsmaska: "
"signal format must be amp-phase or amp-freq."));
/* setup output signal */
p->fout->N = N;
p->fout->overlap = p->overlap;
p->fout->winsize = p->winsize;
p->fout->wintype = p->wintype;
p->fout->format = p->format;
p->fout->sliding = p->fsrc->sliding;
if (p->fsrc->sliding) {
csound->AuxAlloc(csound, (N + 2) * sizeof(MYFLT) * CS_KSMPS,
&p->fout->frame);
p->fout->NB = p->fsrc->NB;
}
else
{
/* RWD MUST be 32bit */
csound->AuxAlloc(csound, (N + 2) * sizeof(float), &p->fout->frame);
p->fout->framecount = 1;
p->lastframe = 0;
}
p->maskfunc = csound->FTnp2Finde(csound, p->ifn);
if (UNLIKELY(p->maskfunc==NULL))
return NOTOK;
/* require at least size of nbins */
if (UNLIKELY(p->maskfunc->flen + 1 < nbins))
return csound->InitError(csound, Str("pvsmaska: ftable too small.\n"));
/* clip any negative values in table */
ftable = p->maskfunc->ftable;
for (i=0;i < p->maskfunc->flen+1;i++)
if (ftable[i] < FL(0.0)) ftable[i] = FL(0.0);
p->nwarned = p->pwarned = 0;
return OK;
}
int32_t pvsmaska(CSOUND *csound, PVSMASKA *p)
{
int32_t i;
int32_t /*flen, */nbins;
MYFLT *ftable;
float *fout,*fsrc; /* RWD MUST be 32bit */
float margin, depth = (float)*p->kdepth;
//flen = p->maskfunc->flen + 1;
ftable = p->maskfunc->ftable;
fout = (float *) p->fout->frame.auxp; /* RWD both MUST be 32bit */
fsrc = (float *) p->fsrc->frame.auxp;
if (UNLIKELY(fout==NULL))
return csound->PerfError(csound,&(p->h),
Str("pvsmaska: not initialised\n"));
if (depth < FL(0.0)) {
/* need the warning: but krate linseg can give below-zeroes incorrectly */
if (UNLIKELY(!p->nwarned)) {
csound->Warning(csound, Str("pvsmaska: negative value for kdepth; "
"clipped to zero.\n"));
p->nwarned = 1;
}
depth = 0.0f;
}
if (UNLIKELY(depth > 1.0f)) {
if (UNLIKELY(!p->pwarned)) {
csound->Warning(csound, Str("pvsmaska: kdepth > 1: clipped.\n"));
p->pwarned = 1;
}
depth = 1.0f;
}
/* massage into internal mapping */
/* user 0 --> my 1
user 1 ---> my 0
user 0.75 -->my 0.25
*/
depth = (1.0f - depth);
margin = 1.0f - depth;
if (p->fsrc->sliding) {
int32_t NB = p->fsrc->NB;
CMPLX *fout, *fsrc;
uint32_t offset = p->h.insdshead->ksmps_offset;
uint32_t early = p->h.insdshead->ksmps_no_end;
uint32_t n, nsmps = CS_KSMPS;
MYFLT amp = FL(1.0);
nsmps -= early;
for (n=offset; n<nsmps; n++) {
fout = (CMPLX *) p->fout->frame.auxp +n*NB;
fsrc = (CMPLX *) p->fsrc->frame.auxp +n*NB;
for (i=0; i<NB; i++) {
amp = depth + margin * ftable[i];
fout[i].re = fsrc[i].re * amp;
fout[i].im = fsrc[i].im;
}
}
return OK;
}
nbins = p->fftsize/2 + 1;
/* only process when a new frame is ready */
if (p->lastframe < p->fsrc->framecount) {
MYFLT amp = FL(1.0);
int32_t aindex, findex;
for (i=0;i < nbins;i++) {
amp = depth + margin * ftable[i];
aindex = i*2;
findex = aindex +1;
fout[aindex] = (float)(fsrc[aindex] * amp);
/* freqs are unmodified */
fout[findex] = (float) fsrc[findex];
}
p->fout->framecount = p->lastframe = p->fsrc->framecount;
}
return OK;
}
/**************PVSFTW ******************/
int32_t pvsftwset(CSOUND *csound, PVSFTW *p)
{
int32_t i;
MYFLT *ftablea,*ftablef;
float *fsrc; /* RWD MUST be 32bit */
int32_t flena,flenf,nbins, N = p->fsrc->N;
/* source fsig */
p->overlap = p->fsrc->overlap;
p->winsize = p->fsrc->winsize;
p->wintype = p->fsrc->wintype;
p->format = p->fsrc->format;
p->fftsize = N;
p->outfna = p->outfnf = NULL;
p->lastframe = 0;
if (UNLIKELY(!((p->format==PVS_AMP_FREQ) || (p->format==PVS_AMP_PHASE))))
return csound->InitError(csound, Str("pvsftw: signal format must be "
"amp-phase or amp-freq.\n"));
if (UNLIKELY(*p->ifna < 1.0f))
return csound->InitError(csound, Str("pvsftw: bad value for ifna.\n"));
if (UNLIKELY(*p->ifnf < 0.0f)) /* 0 = notused */
return csound->InitError(csound, Str("pvsftw: bad value for ifnf.\n"));
p->outfna = csound->FTnp2Finde(csound, p->ifna);
if (UNLIKELY(p->outfna==NULL))
return NOTOK;
if (UNLIKELY(p->fsrc->sliding))
return csound->InitError(csound, Str("Sliding version not yet available"));
fsrc = (float *) p->fsrc->frame.auxp; /* RWD MUST be 32bit */
/* init table, one presumes with zero amps */
nbins = p->fftsize/2 + 1;
flena = p->outfna->flen + 1;
if (UNLIKELY(flena < nbins))
return csound->InitError(csound, Str("pvsftw: amps ftable too small.\n"));
/* init tables */
ftablea = p->outfna->ftable;
for (i=0;i < nbins;i++)
ftablea[i] = fsrc[i*2];
/* freq table? */
if ((int32_t) *p->ifnf >= 1) {
p->outfnf = csound->FTnp2Finde(csound, p->ifnf);
if (UNLIKELY(p->outfnf==NULL))
return NOTOK;
ftablef = p->outfnf->ftable;
if (ftablef) {
flenf = p->outfnf->flen+1;
if (UNLIKELY(flenf < nbins))
return csound->InitError(csound,
Str("pvsftw: freqs ftable too small.\n"));
for (i=0;i < nbins;i++)
ftablef[i] = fsrc[(i*2) + 1];
}
}
return OK;
}
int32_t pvsftw(CSOUND *csound, PVSFTW *p)
{
int32_t i;
int32_t nbins;
MYFLT *ftablea, *ftablef = NULL;
float *fsrc; /* RWD MUST be 32bit */
ftablea = p->outfna->ftable;
fsrc = (float *) p->fsrc->frame.auxp;
if (UNLIKELY(fsrc==NULL))
return csound->PerfError(csound,&(p->h),
Str("pvsftw: not initialised\n"));
if (UNLIKELY(ftablea==NULL))
return csound->PerfError(csound,&(p->h),
Str("pvsftw: no amps ftable!\n"));
if (p->outfnf) {
ftablef = p->outfnf->ftable;
if (UNLIKELY(ftablef==NULL))
return csound->PerfError(csound,&(p->h),
Str("pvsftw: no freqs ftable!\n"));
}
nbins = p->fftsize/2 + 1;
/* only write when a new frame is ready */
if (p->lastframe < p->fsrc->framecount) {
/* write amps */
for (i=0;i < nbins;i++)
ftablea[i] = fsrc[i*2];
/* freqs */
if (ftablef)
for (i=0;i < nbins;i++)
ftablef[i] = fsrc[i*2 + 1];
p->lastframe = p->fsrc->framecount;
/* tell everyone about it */
*p->kflag = FL(1.0);
}
else
*p->kflag = FL(0.0);
return OK;
}
/************ PVSFTR ****************/
int32_t pvsftrset(CSOUND *csound, PVSFTR *p)
{
int32_t i;
float *fdest; /* RWD MUST be 32bit */
int32_t flena,flenf,nbins, N = p->fdest->N;
/* source fsig */
p->overlap = p->fdest->overlap;
p->winsize = p->fdest->winsize;
p->wintype = p->fdest->wintype;
p->format = p->fdest->format;
p->fftsize = N;
p->infna = p->infnf = NULL;
p->ftablea = p->ftablef = NULL;
p->lastframe = 0;
nbins = p->fftsize/2 + 1;
if (UNLIKELY(!(p->format==PVS_AMP_FREQ) || (p->format==PVS_AMP_PHASE)))
return csound->InitError(csound, Str("pvsftr: signal format must be "
"amp-phase or amp-freq.\n"));
/* ifn = 0 = notused */
if (UNLIKELY(*p->ifna < FL(0.0)))
return csound->InitError(csound, Str("pvsftr: bad value for ifna.\n"));
if (UNLIKELY(*p->ifnf < FL(0.0)))
return csound->InitError(csound, Str("pvsftr: bad value for ifnf.\n"));
/* if ifna=0; no amps to read; one assumes the user ias changing freqs only,
otherwise, there is no change!
*/
if ((int32_t) *p->ifna != 0) {
p->infna = csound->FTnp2Finde(csound, p->ifna);
if (UNLIKELY(p->infna==NULL))
return NOTOK;
p->ftablea = p->infna->ftable;
flena = p->infna->flen + 1;
if (UNLIKELY(flena < nbins))
return csound->InitError(csound, Str("pvsftr: amps ftable too small.\n"));
}
if (UNLIKELY(p->overlap < (int32_t)CS_KSMPS || p->overlap < 10))
return csound->InitError(csound, Str("Sliding version not yet available"));
fdest = (float *) p->fdest->frame.auxp; /* RWD MUST be 32bit */
/*** setup first frame ?? */
if (p->ftablea)
for (i=0;i < nbins;i++)
fdest[i*2] = (float) p->ftablea[i];
/* freq table? */
if ((int32_t) *p->ifnf >= 1) {
p->infnf = csound->FTnp2Finde(csound, p->ifnf);
if (UNLIKELY(p->infnf==NULL))
return NOTOK;
p->ftablef = p->infnf->ftable;
flenf = p->infnf->flen+1;
if (UNLIKELY(flenf < nbins))
return csound->InitError(csound, Str("pvsftr: freqs ftable too small.\n"));
for (i=0;i < nbins;i++)
fdest[(i*2) + 1] = (float) p->ftablef[i];
}
return OK;
}
int32_t pvsftr(CSOUND *csound, PVSFTR *p)
{
int32_t i;
int32_t nbins;
float *fdest; /*RWD MUST be 32bit */
fdest = (float *) p->fdest->frame.auxp;
if (UNLIKELY(fdest==NULL))
return csound->PerfError(csound,&(p->h),
Str("pvsftr: not initialised\n"));
nbins = p->fftsize/2 + 1;
/* only write when a new frame is ready */
if (p->lastframe < p->fdest->framecount) {
if (p->ftablea) {
for (i=0;i < nbins;i++)
fdest[i*2] = (float) p->ftablea[i];
}
if (p->ftablef) {
for (i=0;i < nbins;i++)
fdest[(i*2) + 1] = (float) p->ftablef[i];
}
p->lastframe = p->fdest->framecount;
}
return OK;
}
/************** PVSINFO ***********/
int32_t pvsinfo(CSOUND *csound, PVSINFO *p)
{
IGN(csound);
#ifdef _DEBUG
/* init stage opcode : this should always be a proper fsig */
assert(p->fsrc->frame.auxp != NULL);
#endif
*p->ioverlap = (MYFLT) p->fsrc->overlap;
*p->inumbins = (MYFLT) (p->fsrc->N / 2) + 1;
*p->iwinsize = (MYFLT) p->fsrc->winsize;
*p->iformat = (MYFLT) p->fsrc->format;
return OK;
}
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