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/* FFTease for Pd */
#include "fftease.h"
static t_class *ether_class;
#define OBJECT_NAME "ether~"
/* Added a new inlet for the composite index */
typedef struct _ether
{
t_object x_obj;
t_float x_f;
t_fftease *fft;
t_fftease *fft2;
int invert;
t_float threshMult;
short mute;
} t_ether;
static void ether_dsp(t_ether *x, t_signal **sp);
static t_int *ether_perform(t_int *w);
static void *ether_new(t_symbol *s, int argc, t_atom *argv);
static void ether_invert(t_ether *x, t_floatarg toggle);
static void ether_init(t_ether *x);
static void ether_free(t_ether *x);
static void ether_mute(t_ether *x, t_floatarg toggle);
void ether_tilde_setup(void)
{
t_class *c;
c = class_new(gensym("ether~"), (t_newmethod)ether_new,
(t_method)ether_free,sizeof(t_ether), 0,A_GIMME,0);
CLASS_MAINSIGNALIN(c, t_ether, x_f);
class_addmethod(c,(t_method)ether_dsp,gensym("dsp"), A_CANT, 0);
class_addmethod(c,(t_method)ether_mute,gensym("mute"),A_FLOAT,0);
class_addmethod(c,(t_method)ether_invert,gensym("invert"), A_FLOAT, 0);
ether_class = c;
fftease_announce(OBJECT_NAME);
}
void ether_free(t_ether *x)
{
fftease_free(x->fft);
fftease_free(x->fft2);
free(x->fft);
free(x->fft2);
}
void *ether_new(t_symbol *s, int argc, t_atom *argv)
{
t_fftease *fft, *fft2;
t_ether *x = (t_ether *)pd_new(ether_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd,gensym("signal"), gensym("signal"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd,gensym("signal"), gensym("signal"));
outlet_new(&x->x_obj, gensym("signal"));
x->fft = (t_fftease *) calloc(1,sizeof(t_fftease));
x->fft2 = (t_fftease *) calloc(1,sizeof(t_fftease));
fft = x->fft;
fft2 = x->fft2;
fft->initialized = 0;
fft2->initialized = 0;
fft->N = FFTEASE_DEFAULT_FFTSIZE;
fft->overlap = FFTEASE_DEFAULT_OVERLAP;
fft->winfac = FFTEASE_DEFAULT_WINFAC;
fft2->N = FFTEASE_DEFAULT_FFTSIZE;
fft2->overlap = FFTEASE_DEFAULT_OVERLAP;
fft2->winfac = FFTEASE_DEFAULT_WINFAC;
if(argc > 0){ fft->N = fft2->N = (int) atom_getfloatarg(0, argc, argv); }
if(argc > 1){ fft->overlap = fft2->overlap = (int) atom_getfloatarg(1, argc, argv); }
return x;
}
void ether_init(t_ether *x)
{
t_fftease *fft = x->fft;
t_fftease *fft2 = x->fft2;
short initialized = fft->initialized;
fftease_init(fft);
fftease_init(fft2);
if(!initialized){
x->mute = 0;
x->invert = 0;
x->threshMult = 0.;
} else {
x->fft->input = (t_float *) realloc(fft->input,fft->Nw * sizeof(t_float));
x->fft2->input = (t_float *) realloc(fft2->input,fft2->Nw * sizeof(t_float));
x->fft->output = (t_float *) realloc(fft->output,fft->Nw * sizeof(t_float));
}
}
static void do_ether(t_ether *x)
{
t_fftease *fft = x->fft;
t_fftease *fft2 = x->fft2;
int i;
int N2 = fft->N2;
t_float a1, b1, a2, b2;
int even, odd;
int invert = x->invert;
t_float threshMult = x->threshMult;
t_float *bufferOne = fft->buffer;
t_float *bufferTwo = fft2->buffer;
t_float *channelOne = fft->channel;
t_float *channelTwo = fft2->channel;
fftease_fold(fft);
fftease_fold(fft2);
fftease_rdft(fft,1);
fftease_rdft(fft2,1);
if (invert) {
for ( i = 0; i <= N2; i++ ) {
odd = ( even = i<<1 ) + 1;
a1 = ( i == N2 ? *(bufferOne+1) : *(bufferOne+even) );
b1 = ( i == 0 || i == N2 ? 0. : *(bufferOne+odd) );
a2 = ( i == N2 ? *(bufferTwo+1) : *(bufferTwo+even) );
b2 = ( i == 0 || i == N2 ? 0. : *(bufferTwo+odd) );
*(channelOne+even) = hypot( a1, b1 );
*(channelOne+odd) = -atan2( b1, a1 );
*(channelTwo+even) = hypot( a2, b2 );
*(channelTwo+odd) = -atan2( b2, a2 );
if ( *(channelOne+even) > *(channelTwo+even) * threshMult )
*(channelOne+even) = *(channelTwo+even);
if ( *(channelOne+odd) == 0. )
*(channelOne+odd) = *(channelTwo+odd);
}
}
else {
for ( i = 0; i <= N2; i++ ) {
odd = ( even = i<<1 ) + 1;
a1 = ( i == N2 ? *(bufferOne+1) : *(bufferOne+even) );
b1 = ( i == 0 || i == N2 ? 0. : *(bufferOne+odd) );
a2 = ( i == N2 ? *(bufferTwo+1) : *(bufferTwo+even) );
b2 = ( i == 0 || i == N2 ? 0. : *(bufferTwo+odd) );
*(channelOne+even) = hypot( a1, b1 );
*(channelOne+odd) = -atan2( b1, a1 );
*(channelTwo+even) = hypot( a2, b2 );
*(channelTwo+odd) = -atan2( b2, a2 );
if ( *(channelOne+even) < *(channelTwo+even) * threshMult )
*(channelOne+even) = *(channelTwo+even);
if ( *(channelOne+odd) == 0. )
*(channelOne+odd) = *(channelTwo+odd);
}
}
for ( i = 0; i <= N2; i++ ) {
odd = ( even = i<<1 ) + 1;
*(bufferOne+even) = *(channelOne+even) * cos( *(channelOne+odd) );
if ( i != N2 )
*(bufferOne+odd) = -(*(channelOne+even)) * sin( *(channelOne+odd) );
}
fftease_rdft(fft, -1);
fftease_overlapadd(fft);
}
t_int *ether_perform(t_int *w)
{
int i,j;
t_ether *x = (t_ether *) (w[1]);
t_float *MSPInputVector1 = (t_float *)(w[2]);
t_float *MSPInputVector2 = (t_float *)(w[3]);
t_float *vec_threshMult = (t_float *)(w[4]);
t_float *MSPOutputVector = (t_float *)(w[5]);
t_fftease *fft = x->fft;
t_fftease *fft2 = x->fft2;
int MSPVectorSize = fft->MSPVectorSize;
int operationRepeat = fft->operationRepeat;
int operationCount = fft->operationCount;
t_float *internalInputVector1 = fft->internalInputVector;
t_float *internalInputVector2 = fft2->internalInputVector;
t_float *internalOutputVector = fft->internalOutputVector;
t_float *inputOne = fft->input;
t_float *inputTwo = fft2->input;
t_float *output = fft->output;
int D = fft->D;
int Nw = fft->Nw;
t_float mult = fft->mult;
x->threshMult = *vec_threshMult;
if ( x->threshMult == 0. ){
x->threshMult = 0.0001;
}
if(x->mute){
for(i=0; i < MSPVectorSize; i++){ MSPOutputVector[i] = 0.0; }
return w+6;
}
if( fft->bufferStatus == EQUAL_TO_MSP_VECTOR ){
memcpy(inputOne, inputOne + D, (Nw - D) * sizeof(t_float));
memcpy(inputOne + (Nw - D), MSPInputVector1, D * sizeof(t_float));
memcpy(inputTwo, inputTwo + D, (Nw - D) * sizeof(t_float));
memcpy(inputTwo + (Nw - D), MSPInputVector2, D * sizeof(t_float));
do_ether(x);
for ( j = 0; j < D; j++ ){ *MSPOutputVector++ = output[j] * mult; }
memcpy(output, output + D, (Nw-D) * sizeof(t_float));
for(j = (Nw-D); j < Nw; j++){ output[j] = 0.0; }
}
else if( fft->bufferStatus == SMALLER_THAN_MSP_VECTOR ) {
for( i = 0; i < operationRepeat; i++ ){
memcpy(inputOne, inputOne + D, (Nw - D) * sizeof(t_float));
memcpy(inputOne + (Nw-D), MSPInputVector1 + (D*i), D * sizeof(t_float));
memcpy(inputTwo, inputTwo + D, (Nw - D) * sizeof(t_float));
memcpy(inputTwo + (Nw-D), MSPInputVector2 + (D*i), D * sizeof(t_float));
do_ether(x);
for ( j = 0; j < D; j++ ){ *MSPOutputVector++ = output[j] * mult; }
memcpy(output, output + D, (Nw-D) * sizeof(t_float));
for(j = (Nw-D); j < Nw; j++){ output[j] = 0.0; }
}
}
else if( fft->bufferStatus == BIGGER_THAN_MSP_VECTOR ) {
memcpy(internalInputVector1 + (operationCount * MSPVectorSize), MSPInputVector1, MSPVectorSize * sizeof(t_float));
memcpy(internalInputVector2 + (operationCount * MSPVectorSize), MSPInputVector2, MSPVectorSize * sizeof(t_float));
memcpy(MSPOutputVector, internalOutputVector + (operationCount * MSPVectorSize), MSPVectorSize * sizeof(t_float));
operationCount = (operationCount + 1) % operationRepeat;
if( operationCount == 0 ) {
memcpy(inputOne, inputOne + D, (Nw - D) * sizeof(t_float));
memcpy(inputOne + (Nw - D), internalInputVector1, D * sizeof(t_float));
memcpy(inputTwo, inputTwo + D, (Nw - D) * sizeof(t_float));
memcpy(inputTwo + (Nw - D), internalInputVector2, D * sizeof(t_float));
do_ether(x);
for ( j = 0; j < D; j++ ){ internalOutputVector[j] = output[j] * mult; }
memcpy(output, output + D, (Nw - D) * sizeof(t_float));
for(j = (Nw-D); j < Nw; j++){ output[j] = 0.0; }
}
fft->operationCount = operationCount;
}
return w+6;
}
void ether_mute(t_ether *x, t_floatarg toggle)
{
x->mute = (short)toggle;
}
void ether_invert(t_ether *x, t_floatarg toggle)
{
x->invert = (int)toggle;
}
void ether_dsp(t_ether *x, t_signal **sp)
{
int reset_required = 0;
int maxvectorsize = sp[0]->s_n;
int samplerate = sp[0]->s_sr;
t_fftease *fft = x->fft;
t_fftease *fft2 = x->fft2;
if(fft->R != samplerate || fft->MSPVectorSize != maxvectorsize || fft->initialized == 0){
reset_required = 1;
}
if(!samplerate)
return;
if(fft->MSPVectorSize != maxvectorsize){
fft->MSPVectorSize = maxvectorsize;
fftease_set_fft_buffers(fft);
fft2->MSPVectorSize = maxvectorsize;
fftease_set_fft_buffers(fft2);
}
if(fft->R != samplerate ){
fft->R = samplerate;
fft2->R = samplerate;
}
if(reset_required){
ether_init(x);
}
if(fftease_msp_sanity_check(fft,OBJECT_NAME)) {
dsp_add(ether_perform, 5, x, sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec,sp[3]->s_vec);
}
}
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