/
residency_buffer~.c
483 lines (423 loc) · 15.1 KB
/
residency_buffer~.c
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/* FFTease for Pd */
#include "fftease.h"
static t_class *residency_buffer_class;
#define OBJECT_NAME "residency_buffer~"
typedef struct _residency_buffer
{
t_object x_obj;
t_float x_f;
t_fftease *fft;
long b_frames;
long b_valid;
long b_errorstatus;
t_word *b_samples;
t_float current_frame;
int framecount;
//
t_float frame_increment ;
t_float fpos;
t_float last_fpos;
t_float tadv;
long read_me;
long frames_read;
long MAXFRAMES;
short mute;
long buffer_frame_count;
short initialized;
short playthrough;
t_float sync;
short buffer_is_hosed;
long interpolation_attr;
t_symbol *buffername;
void *size_outlet; // will send desired size in samples
} t_residency_buffer;
static void residency_buffer_dsp(t_residency_buffer *x, t_signal **sp);
static t_int *residency_buffer_perform(t_int *w);
static void *residency_buffer_new(t_symbol *msg, short argc, t_atom *argv);
static void residency_buffer_acquire_sample ( t_residency_buffer *x ) ;
static void residency_buffer_mute(t_residency_buffer *x, t_floatarg toggle);
static void residency_buffer_interpolation(t_residency_buffer *x, t_floatarg toggle);
static void residency_buffer_calcbuf(t_residency_buffer *x, t_floatarg desired_duration);
static void residency_buffer_free( t_residency_buffer *x );
static void residency_buffer_playthrough(t_residency_buffer *x, t_floatarg f);
static void residency_buffer_init(t_residency_buffer *x);
static void residency_buffer_transpose(t_residency_buffer *x, t_floatarg tf);
static void residency_buffer_synthresh(t_residency_buffer *x, t_floatarg thresh);
static void residency_buffer_oscbank(t_residency_buffer *x, t_floatarg flag);
static void residency_buffer_attachbuf(t_residency_buffer *x);
static void residency_buffer_redraw(t_residency_buffer *x);
void residency_buffer_tilde_setup(void)
{
t_class *c;
c = class_new(gensym("residency_buffer~"), (t_newmethod)residency_buffer_new,
(t_method)residency_buffer_free,sizeof(t_residency_buffer), 0,A_GIMME,0);
CLASS_MAINSIGNALIN(c, t_residency_buffer, x_f);
class_addmethod(c,(t_method)residency_buffer_dsp,gensym("dsp"), A_CANT, 0);
class_addmethod(c,(t_method)residency_buffer_mute,gensym("mute"),A_FLOAT,0);
class_addmethod(c,(t_method)residency_buffer_interpolation,gensym("interpolation"),A_FLOAT,0);
class_addmethod(c,(t_method)residency_buffer_oscbank,gensym("oscbank"),A_FLOAT,0);
class_addmethod(c,(t_method)residency_buffer_transpose,gensym("transpose"),A_FLOAT,0);
class_addmethod(c,(t_method)residency_buffer_synthresh,gensym("synthresh"),A_FLOAT,0);
class_addmethod(c,(t_method)residency_buffer_calcbuf,gensym("calcbuf"), A_FLOAT, 0);
class_addmethod(c,(t_method)residency_buffer_playthrough,gensym("playthrough"), A_FLOAT, 0);
class_addmethod(c,(t_method)residency_buffer_acquire_sample,gensym("acquire_sample"), 0);
residency_buffer_class = c;
fftease_announce(OBJECT_NAME);
}
void residency_buffer_free( t_residency_buffer *x )
{
fftease_free(x->fft);
free(x->fft);
}
void residency_buffer_calcbuf(t_residency_buffer *x, t_floatarg desired_duration)
{
t_float ms_calc;
t_float seconds;
t_float frames;
t_float samples;
t_float tadv = x->tadv;
t_fftease *fft = x->fft;
if(tadv == 0){
post("zero tadv!");
return;
}
if(fft->R == 0){
post("zero sampling rate!");
return;
}
seconds = desired_duration / 1000.0;
frames = seconds / tadv;
samples = frames * (t_float) (fft->N + 2);
ms_calc = (samples / fft->R) * 1000.0;
post("desired duration in ms: %f",desired_duration);
post("you need %.0f samples in buffer to get %.0f frames or %f secs",
samples, frames, seconds);
outlet_float(x->size_outlet, samples);
}
void *residency_buffer_new(t_symbol *msg, short argc, t_atom *argv)
{
t_residency_buffer *x = (t_residency_buffer *)pd_new(residency_buffer_class);
t_fftease *fft;
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"));
outlet_new(&x->x_obj, gensym("signal"));
x->size_outlet = outlet_new(&x->x_obj, gensym("float"));
x->fft = (t_fftease *) calloc(1,sizeof(t_fftease));
fft = x->fft;
fft->initialized = 0;
fft->N = FFTEASE_DEFAULT_FFTSIZE;
fft->overlap = FFTEASE_DEFAULT_OVERLAP;
fft->winfac = FFTEASE_DEFAULT_WINFAC;
x->b_errorstatus = 0;
if(argc > 0){ x->buffername = atom_getsymbolarg(0, argc, argv); }
else {
pd_error(x,"%s: you must provide a valid buffer name",OBJECT_NAME);
x->buffername = &s_;
}
if(argc > 1){ fft->N = (int) atom_getfloatarg(1, argc, argv); }
if(argc > 2){ fft->overlap = (int) atom_getfloatarg(2, argc, argv); }
return x;
}
void residency_buffer_init(t_residency_buffer *x)
{
t_fftease *fft = x->fft;
short initialized = x->fft->initialized;
if( fft->R <= 0 ){
post("bad SR");
return;
}
if( fft->MSPVectorSize <= 0 ){
post("bad vectorsize");
return;
}
fftease_init(fft);
x->tadv = (t_float)fft->D / (t_float)fft->R;
if(!initialized){
x->mute = 0;
x->sync = 0;
x->initialized = 1;
x->current_frame = x->framecount = 0;
x->frame_increment = 1.0 ;
x->fpos = x->last_fpos = 0;
}
}
static void do_residency_buffer(t_residency_buffer *x)
{
t_fftease *fft = x->fft;
int N = x->fft->N;
int i,j,k;
t_float fframe = x->current_frame ;
t_float fincr = x->frame_increment;
t_float fpos = x->fpos;
t_float last_fpos = x->last_fpos ;
t_float *channel = fft->channel;
t_word *b_samples;
long b_frames = x->b_frames;
long b_valid = x->b_valid;
int frames_read = x->frames_read;
long index_offset;
long buffer_frame_count = x->buffer_frame_count;
long index1, index2;
t_float frak;
residency_buffer_attachbuf(x);
b_samples = x->b_samples;
b_frames = x->b_frames;
buffer_frame_count = (int)((t_float) b_frames / (t_float)(x->fft->N + 2));
if(b_frames < 1 || ! b_valid){
post("%s: table too small or not valid",OBJECT_NAME);
return;
}
if( x->read_me ) {
fftease_fold(fft);
fftease_rdft(fft, FFT_FORWARD);
fftease_convert(fft);
index_offset = (N+2) * frames_read;
for(i = index_offset, j = 0; i < index_offset + N + 2; i++, j++){
if(i >= b_frames){
post("hit end of buffer on frame %d", frames_read);
goto escape;
}
b_samples[i].w_float = channel[j];
}
++frames_read;
x->sync = (t_float)frames_read/(t_float)(buffer_frame_count);
if( frames_read >= buffer_frame_count){
x->read_me = 0;
fpos = 0.0;
residency_buffer_redraw(x);
}
}
else {
if( fpos < 0 )
fpos = 0;
if( fpos > 1 )
fpos = 1;
if( fpos != last_fpos ){
fframe = fpos * (t_float) buffer_frame_count;
last_fpos = fpos;
}
fframe += fincr;
// post("fframe %f framecount %d", fframe, buffer_frame_count);
while(fframe >= buffer_frame_count) {
fframe -= buffer_frame_count;
}
while( fframe < 0. ) {
fframe += buffer_frame_count;
}
// goto escape;
if(x->interpolation_attr == 1){
long iframe = floor(fframe);
index1 = (N+2) * iframe;
index2 = (N+2) * ((iframe + 1) % buffer_frame_count);
frak = fframe - iframe;
for( i = index1, j = index2, k = 0; i < index1 + N + 2; i++, j++, k++){
if(i >= b_frames || j >= b_frames){
post("hit end of buffer on frame %d, index %d %d", index1,i,j);
goto escape;
}
channel[k] = b_samples[i].w_float + frak * (b_samples[j].w_float - b_samples[i].w_float);
}
}
else {
index_offset = (N+2) * (long) fframe;
for( i = index_offset, j = 0; i < index_offset + N + 2; i++, j++ ){
if(i >= b_frames){
post("hit end of buffer on frame %d, index %d", index_offset,i);
goto escape;
}
channel[j] = b_samples[i].w_float;
}
}
x->sync = fframe / (t_float) buffer_frame_count;
// REPLACE loveboat with buffer
if(fft->obank_flag){
fftease_oscbank(fft);
}
else {
fftease_unconvert(fft);
fftease_rdft(fft, FFT_INVERSE);
fftease_overlapadd(fft);
}
}
escape:
;
/* restore state variables */
x->current_frame = fframe;
x->frame_increment = fincr;
x->fpos = fpos;
x->last_fpos = last_fpos;
x->frames_read = frames_read;
}
void residency_buffer_redraw(t_residency_buffer *x)
{
t_garray *a;
if (!(a = (t_garray *)pd_findbyclass(x->buffername, garray_class))) {
if (*x->buffername->s_name) pd_error(x, "function~: %s: no such array", x->buffername->s_name);
}
else {
garray_redraw(a);
}
}
void residency_buffer_attachbuf(t_residency_buffer *x)
{
int frames;
t_symbol *buffername = x->buffername;
t_garray *a;
x->b_frames = 0;
x->b_valid = 0;
if (!(a = (t_garray *)pd_findbyclass(buffername, garray_class)))
{
if (*buffername->s_name) {
if(x->b_errorstatus == 0) {
pd_error(x, "residency_buffer~: %s: no such array", buffername->s_name);
x->b_errorstatus = 1;
}
}
}
else if (!garray_getfloatwords(a, &frames, &x->b_samples))
{
if(x->b_errorstatus == 0) {
pd_error(x, "%s: bad template for residency_buffer~", buffername->s_name);
x->b_errorstatus = 1;
}
}
else {
x->b_frames = frames;
x->b_valid = 1;
x->b_errorstatus = 0;
garray_usedindsp(a);
}
}
t_int *residency_buffer_perform(t_int *w)
{
int i, j;
//////////////////////////////////////////////
t_residency_buffer *x = (t_residency_buffer *) (w[1]);
t_float *MSPInputVector = (t_float *)(w[2]);
t_float *increment = (t_float *)(w[3]);
t_float *position = (t_float *)(w[4]);
t_float *MSPOutputVector = (t_float *)(w[5]);
t_float *vec_sync = (t_float *)(w[6]);
t_fftease *fft = x->fft;
int MSPVectorSize = fft->MSPVectorSize;
int operationRepeat = fft->operationRepeat;
int operationCount = fft->operationCount;
t_float *internalInputVector = fft->internalInputVector;
t_float *internalOutputVector = fft->internalOutputVector;
int D = fft->D;
int Nw = fft->Nw;
t_float *input = fft->input;
t_float *output = fft->output;
float mult = fft->mult;
if( fft->obank_flag )
mult *= FFTEASE_OSCBANK_SCALAR;
residency_buffer_attachbuf(x);
/* quit before doing anything unless we're good to go */
if( x->mute || ! x->b_valid) {
for(i=0; i < MSPVectorSize; i++){ MSPOutputVector[i] = 0.0; }
for(i=0; i < MSPVectorSize; i++){ vec_sync[i] = 0.0; }
return w+7;
}
x->frame_increment = *increment;
x->fpos = *position;
for ( i = 0; i < MSPVectorSize; i++ ){
vec_sync[i] = x->sync;
}
if(x->framecount > 0 && x->read_me ){
x->sync = (t_float)x->frames_read/(t_float)x->framecount;
}
if( fft->bufferStatus == EQUAL_TO_MSP_VECTOR ){
memcpy(input, input + D, (Nw - D) * sizeof(t_float));
memcpy(input + (Nw - D), MSPInputVector, D * sizeof(t_float));
do_residency_buffer(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(input, input + D, (Nw - D) * sizeof(t_float));
memcpy(input + (Nw-D), MSPInputVector + (D*i), D * sizeof(t_float));
do_residency_buffer(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(internalInputVector + (operationCount * MSPVectorSize), MSPInputVector,MSPVectorSize * sizeof(t_float));
memcpy(MSPOutputVector, internalOutputVector + (operationCount * MSPVectorSize),MSPVectorSize * sizeof(t_float));
operationCount = (operationCount + 1) % operationRepeat;
if( operationCount == 0 ) {
memcpy(input, input + D, (Nw - D) * sizeof(t_float));
memcpy(input + (Nw - D), internalInputVector, D * sizeof(t_float));
do_residency_buffer(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+7;
}
void residency_buffer_acquire_sample ( t_residency_buffer *x )
{
residency_buffer_attachbuf(x);
x->read_me = 1;
x->frames_read = 0;
x->buffer_frame_count = (int)((t_float) (x->b_frames) / (t_float)(x->fft->N + 2));
post("storing %d FFT frames", x->buffer_frame_count);
post("%s: beginning spectral data acquisition",OBJECT_NAME);
return;
}
void residency_buffer_mute(t_residency_buffer *x, t_floatarg toggle)
{
x->mute = (short)toggle;
}
void residency_buffer_interpolation(t_residency_buffer *x, t_floatarg toggle)
{
x->interpolation_attr = (short)toggle;
}
void residency_buffer_playthrough(t_residency_buffer *x, t_floatarg toggle)
{
x->playthrough = (short)toggle;
}
void residency_buffer_transpose(t_residency_buffer *x, t_floatarg tf)
{
x->fft->P = (float) tf;
}
void residency_buffer_synthresh(t_residency_buffer *x, t_floatarg thresh)
{
x->fft->synt = (float) thresh;
}
void residency_buffer_oscbank(t_residency_buffer *x, t_floatarg flag)
{
x->fft->obank_flag = (short) flag;
}
void residency_buffer_dsp(t_residency_buffer *x, t_signal **sp)
{
int reset_required = 0;
int maxvectorsize = sp[0]->s_n;
int samplerate = sp[0]->s_sr;
if(!samplerate)
return;
t_fftease *fft = x->fft;
if(fft->R != samplerate || fft->MSPVectorSize != maxvectorsize || fft->initialized == 0){
reset_required = 1;
}
if(fft->MSPVectorSize != maxvectorsize){
fft->MSPVectorSize = maxvectorsize;
fftease_set_fft_buffers(fft);
}
if(fft->R != samplerate){
fft->R = samplerate;
}
if(reset_required){
residency_buffer_init(x);
}
if(fftease_msp_sanity_check(fft,OBJECT_NAME)) {
dsp_add(residency_buffer_perform, 6, x, sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, sp[3]->s_vec,
sp[4]->s_vec);
}
}