diff options
Diffstat (limited to 'pvgrain~.c')
| -rw-r--r-- | pvgrain~.c | 536 |
1 files changed, 536 insertions, 0 deletions
diff --git a/pvgrain~.c b/pvgrain~.c new file mode 100644 index 0000000..e3eee1d --- /dev/null +++ b/pvgrain~.c @@ -0,0 +1,536 @@ +#include "MSPd.h"
+#include "fftease.h"
+
+#if MSP
+void *pvgrain_class;
+#endif
+
+#if PD
+static t_class *pvgrain_class;
+#endif
+
+#define OBJECT_NAME "pvgrain~"
+
+typedef struct _pvgrain
+{
+#if MSP
+ t_pxobject x_obj;
+#endif
+#if PD
+ t_object x_obj;
+ float x_f;
+#endif
+ int R;
+ int N;
+ int N2;
+ int Nw;
+ int Nw2;
+ int D;
+ int i;
+ int inCount;
+ float *Wanal;
+ float *Wsyn;
+ float *input;
+ float *Hwin;
+ float *buffer;
+ float *channel;
+ float *output;
+ // for convert
+ float *c_lastphase_in;
+ float c_fundamental;
+ float c_factor_in;
+ float c_factor_out;
+float synt;
+ // for oscbank
+ int NP;
+ float P;
+ int L;
+ int first;
+ float Iinv;
+ float *lastamp;
+ float *lastfreq;
+ float *index;
+ float *table;
+ short *binsort;
+ float myPInc;
+ float ffac;
+ //
+ int lo_bin;
+ int hi_bin;
+ float topfreq;
+ float bottomfreq;
+ // for fast fft
+ float mult;
+ float *trigland;
+ int *bitshuffle;
+ //
+ int mute;
+ float grain_probability;
+ float sample_basefreq;
+ int grains_per_frame ;
+ void *list_outlet;
+ float *listdata;
+ short list_count;
+ void *m_clock;
+ int overlap;//overlap factor
+ int winfac;//window factor
+ int vs;//vector size
+
+} t_pvgrain;
+
+void *pvgrain_new(t_symbol *s, int argc, t_atom *argv);
+t_int *offset_perform(t_int *w);
+t_int *pvgrain_perform(t_int *w);
+void pvgrain_dsp(t_pvgrain *x, t_signal **sp, short *count);
+void pvgrain_assist(t_pvgrain *x, void *b, long m, long a, char *s);
+void pvgrain_mute(t_pvgrain *x, t_floatarg state);
+void pvgrain_float(t_pvgrain *x, double f);
+void pvgrain_tick(t_pvgrain *x);
+void pvgrain_printchan(t_pvgrain *x);
+void pvgrain_probability (t_pvgrain *x, t_floatarg prob);
+void pvgrain_framegrains (t_pvgrain *x, t_floatarg grains);
+void pvgrain_topfreq (t_pvgrain *x, t_floatarg top);
+void pvgrain_bottomfreq (t_pvgrain *x, t_floatarg f);
+void pvgrain_basefreq (t_pvgrain *x, t_floatarg base);
+float pvgrain_randf(float min, float max);
+void pvgrain_init(t_pvgrain *x, short initialized);
+void pvgrain_free(t_pvgrain *x);
+void pvgrain_winfac(t_pvgrain *x, t_floatarg factor);
+void pvgrain_overlap(t_pvgrain *x, t_floatarg o);
+void pvgrain_fftinfo(t_pvgrain *x) ;
+
+#if MSP
+void main(void)
+{
+ setup((t_messlist **)&pvgrain_class, (method)pvgrain_new, (method)pvgrain_free,
+ (short)sizeof(t_pvgrain), 0, A_GIMME, 0);
+ addmess((method)pvgrain_dsp, "dsp", A_CANT, 0);
+ addmess((method)pvgrain_assist,"assist",A_CANT,0);
+ addmess((method)pvgrain_mute,"mute",A_DEFFLOAT,0);
+ addmess((method)pvgrain_printchan,"printchan",A_DEFFLOAT,0);
+ addmess((method)pvgrain_probability,"probability",A_DEFFLOAT,0);
+ addmess((method)pvgrain_framegrains,"framegrains",A_DEFFLOAT,0);
+ addmess((method)pvgrain_topfreq,"topfreq",A_DEFFLOAT,0);
+ addmess((method)pvgrain_basefreq,"basefreq",A_DEFFLOAT,0);
+ addmess((method)pvgrain_overlap, "overlap", A_DEFFLOAT, 0);
+ addmess((method)pvgrain_winfac, "winfac", A_DEFFLOAT, 0);
+ addmess((method)pvgrain_fftinfo, "fftinfo", 0);
+ dsp_initclass();
+ post("%s %s",OBJECT_NAME,FFTEASE_ANNOUNCEMENT);}
+#endif
+#if PD
+void pvgrain_tilde_setup(void)
+{
+ pvgrain_class = class_new(gensym("pvgrain~"), (t_newmethod)pvgrain_new,
+ (t_method)pvgrain_free ,sizeof(t_pvgrain), 0, A_GIMME, 0);
+ CLASS_MAINSIGNALIN(pvgrain_class, t_pvgrain, x_f);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_dsp, gensym("dsp"), 0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_mute, gensym("mute"), A_FLOAT, 0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_topfreq, gensym("topfreq"), A_FLOAT, 0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_bottomfreq, gensym("bottomfreq"), A_FLOAT, 0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_printchan, gensym("printchan"), A_FLOAT, 0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_probability, gensym("probability"), A_FLOAT, 0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_framegrains, gensym("framegrains"), A_FLOAT, 0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_basefreq, gensym("basefreq"), A_FLOAT, 0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_overlap, gensym("overlap"), A_DEFFLOAT,0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_winfac, gensym("winfac"), A_DEFFLOAT,0);
+ class_addmethod(pvgrain_class, (t_method)pvgrain_fftinfo, gensym("fftinfo"), 0);
+ post("%s %s",OBJECT_NAME,FFTEASE_ANNOUNCEMENT);
+}
+#endif
+
+void pvgrain_printchan(t_pvgrain *x)
+{
+ int i;
+ post("***");
+ for( i = 0 ; i < 30; i+= 2 ){
+ post("amp %f freq %f", x->channel[i*2], x->channel[i*2 + 1]);
+ }
+ post("***");
+}
+
+void pvgrain_basefreq (t_pvgrain *x, t_floatarg base)
+{
+ if( base < 0.0 )
+ base = 0. ;
+ if( base > x->R / 2 )
+ base = x->R / 2 ;
+ x->sample_basefreq = base;
+}
+
+void pvgrain_topfreq (t_pvgrain *x, t_floatarg top)
+{
+ float curfreq ;
+ if( top < 50. )
+ top = 50.;
+ if( top > x->R / 2 )
+ top = x->R / 2;
+ x->topfreq = top ;
+ curfreq = 0;
+ x->hi_bin = 0;
+ while( curfreq < x->topfreq ) {
+ ++(x->hi_bin);
+ curfreq += x->c_fundamental ;
+ }
+}
+
+void pvgrain_bottomfreq (t_pvgrain *x, t_floatarg f)
+{
+ float curfreq;
+ if( f >= x->topfreq || f >= x->R/2){
+ post("%f is too high a bottom freq",f);
+ return;
+ }
+
+ x->bottomfreq = f;
+ curfreq = 0;
+ x->lo_bin = 0;
+ while( curfreq < x->bottomfreq ) {
+ ++(x->lo_bin);
+ curfreq += x->c_fundamental ;
+ }
+// post("low bin: %d high bin: %d",x->lo_bin,x->hi_bin);
+}
+
+void pvgrain_probability (t_pvgrain *x, t_floatarg prob)
+{
+
+ if( prob < 0. )
+ prob = 0.;
+ if( prob > 1. )
+ prob = 1.;
+ x->grain_probability = prob ;
+}
+
+void pvgrain_framegrains (t_pvgrain *x, t_floatarg grains)
+{
+
+ if( grains < 1 )
+ grains = 1;
+ if( grains > x->N2 - 1 )
+ grains = x->N2 - 1;
+ x->grains_per_frame = grains ;
+
+}
+
+void pvgrain_tick(t_pvgrain *x)
+{
+ t_atom myList[2];
+ float *listdata = x->listdata;
+ int i;
+
+ for (i=0; i < 2; i++) {
+ SETFLOAT(myList+i,listdata[i]); /* macro for setting a t_atom */
+
+ }
+ outlet_list(x->list_outlet,0L,2,myList);
+
+}
+
+void pvgrain_assist (t_pvgrain *x, void *b, long msg, long arg, char *dst)
+{
+ if (msg==1) {
+ switch (arg) {
+ case 0:
+ sprintf(dst,"(signal) Input");
+ break;
+
+ }
+ } else if (msg==2) {
+ sprintf(dst,"(list) Amplitude/Frequency Pairs");
+ }
+}
+
+void *pvgrain_new(t_symbol *s, int argc, t_atom *argv)
+{
+#if MSP
+ t_pvgrain *x = (t_pvgrain *)newobject(pvgrain_class);
+ dsp_setup((t_pxobject *)x,1);
+ x->list_outlet = listout(x);
+#endif
+#if PD
+ t_pvgrain *x = (t_pvgrain *)pd_new(pvgrain_class);
+ x->list_outlet = outlet_new(&x->x_obj,gensym("list"));
+#endif
+ x->vs = sys_getblksize();
+ x->R = sys_getsr();
+
+ x->grains_per_frame = atom_getfloatarg(0,argc,argv);
+ x->grain_probability = atom_getfloatarg(1,argc,argv);
+ x->topfreq = atom_getfloatarg(2,argc,argv);
+ x->overlap = atom_getfloatarg(3,argc,argv);
+ x->winfac = atom_getfloatarg(4,argc,argv);
+
+ if(!x->grains_per_frame)
+ x->grains_per_frame = 4;
+ if(!x->grain_probability)
+ x->grain_probability = .0001;
+ if(!x->topfreq)
+ x->topfreq = 1000;
+ if(!x->overlap)
+ x->overlap = 2;
+ if(!x->winfac)
+ x->winfac = 4;
+
+ pvgrain_init(x,0);
+ return (x);
+}
+
+void pvgrain_init(t_pvgrain *x, short initialized)
+{
+ float curfreq;
+
+ x->D = x->vs;
+ x->N = x->D * x->overlap;
+ x->Nw = x->N * x->winfac;
+ limit_fftsize(&x->N,&x->Nw,OBJECT_NAME);
+ x->N2 = (x->N)>>1;
+ x->Nw2 = (x->Nw)>>1;
+ x->inCount = -(x->Nw);
+ x->mult = 1. / (float) x->N;
+ x->Iinv = 1./x->D;
+ x->myPInc = x->P*x->L/x->R;
+ x->ffac = x->P * PI/x->N;
+#if MSP
+ x->m_clock = clock_new(x,(method)pvgrain_tick);
+#endif
+#if PD
+ x->m_clock = clock_new(x,(void *)pvgrain_tick);
+#endif
+ x->c_fundamental = (float) x->R/(float)( (x->N2)<<1);
+ x->c_factor_in = (float) x->R/((float)x->D * TWOPI);
+ x->c_factor_out = TWOPI * (float) x->D / (float) x->R;
+
+
+ if(!initialized){
+ x->P = 1.0 ;
+ x->sample_basefreq = 261.0;
+ x->bottomfreq = 0.0;
+ x->mute = 0;
+ x->Wanal = (float *) getbytes( (MAX_Nw) * sizeof(float));
+ x->Wsyn = (float *) getbytes( (MAX_Nw) * sizeof(float));
+ x->Hwin = (float *) getbytes( (MAX_Nw) * sizeof(float));
+ x->input = (float *) getbytes( MAX_Nw * sizeof(float) );
+ x->buffer = (float *) getbytes( MAX_N * sizeof(float) );
+ x->channel = (float *) getbytes( (MAX_N+2) * sizeof(float) );
+ x->output = (float *) getbytes( MAX_Nw * sizeof(float) );
+ x->bitshuffle = (int *) getbytes( MAX_N * 2 * sizeof( int ) );
+ x->trigland = (float *) getbytes( MAX_N * 2 * sizeof( float ) );
+ x->c_lastphase_in = (float *) getbytes((MAX_N2+1) * sizeof(float));
+ x->binsort = (short *) getbytes((MAX_N2+1) * sizeof(short) );
+ x->listdata = (float *) getbytes(40 * sizeof(float));
+
+ }
+ memset((char *)x->input,0,x->Nw * sizeof(float));
+ memset((char *)x->output,0,x->Nw * sizeof(float));
+ memset((char *)x->c_lastphase_in,0,(x->N2+1) * sizeof(float));
+ init_rdft( x->N, x->bitshuffle, x->trigland);
+ makewindows( x->Hwin, x->Wanal, x->Wsyn, x->Nw, x->N, x->D);
+ curfreq = 0;
+ x->hi_bin = 0;
+ x->lo_bin = 0;
+ while( curfreq < x->topfreq ) {
+ ++(x->hi_bin);
+ curfreq += x->c_fundamental ;
+ }
+ x->lo_bin = 0;
+ curfreq = 0;
+ while( curfreq < x->bottomfreq ) {
+ ++(x->lo_bin);
+ curfreq += x->c_fundamental ;
+ }
+
+}
+
+void pvgrain_overlap(t_pvgrain *x, t_floatarg o)
+{
+ if(!power_of_two((int)o)){
+ error("%f is not a power of two",o);
+ return;
+ }
+ x->overlap = (int)o;
+ pvgrain_init(x,1);
+}
+
+void pvgrain_winfac(t_pvgrain *x, t_floatarg f)
+{
+ if(!power_of_two((int)f)){
+ error("%f is not a power of two",f);
+ return;
+ }
+ x->winfac = (int)f;
+ pvgrain_init(x,2);
+}
+
+void pvgrain_fftinfo( t_pvgrain *x )
+{
+ if( ! x->overlap ){
+ post("zero overlap!");
+ return;
+ }
+ post("%s: FFT size %d, hopsize %d, windowsize %d", OBJECT_NAME, x->N, x->N/x->overlap, x->Nw);
+}
+
+
+void pvgrain_free(t_pvgrain *x)
+{
+#if MSP
+ dsp_free((t_pxobject *) x);
+#endif
+ freebytes(x->trigland,0);
+ freebytes(x->bitshuffle,0);
+ freebytes(x->Wanal,0);
+ freebytes(x->Wsyn,0);
+ freebytes(x->input,0);
+ freebytes(x->Hwin,0);
+ freebytes(x->buffer,0);
+ freebytes(x->channel,0);
+ freebytes(x->output,0);
+ freebytes(x->c_lastphase_in,0);
+ freebytes(x->binsort,0);
+ freebytes(x->listdata,0);
+}
+
+t_int *pvgrain_perform(t_int *w)
+{
+ int i,j, in;
+ float tmp, dice;
+ short print_grain;
+
+ t_pvgrain *x = (t_pvgrain *) (w[1]);
+ t_float *inbuf = (t_float *)(w[2]);
+ t_int n = w[3];
+
+ short *binsort = x->binsort;
+ int grains_per_frame = x->grains_per_frame ;
+ int hi_bin = x->hi_bin;
+ int lo_bin = x->lo_bin;
+ int *bitshuffle = x->bitshuffle;
+ float *trigland = x->trigland;
+ float factor_in = x->c_factor_in;
+ int D = x->D;
+ int I = D;
+ int R = x->R;
+ int Nw = x->Nw;
+ int N = x->N ;
+ int N2 = x-> N2;
+ int Nw2 = x->Nw2;
+ float fundamental = x->c_fundamental;
+ float *lastphase_in = x->c_lastphase_in;
+ float *Wanal = x->Wanal;
+ float *Wsyn = x->Wsyn;
+ float *input = x->input;
+ float *Hwin = x->Hwin;
+ float *buffer = x->buffer;
+ float *channel = x->channel;
+ float selection_probability = x->grain_probability;
+
+ if (x->mute) {
+ return (w+4);
+ }
+
+
+ in = x->inCount ;
+ x->list_count = 0;
+
+ in += D;
+
+ for ( j = 0 ; j < (Nw - D) ; j++ ){
+ input[j] = input[j+D];
+ }
+ for ( j = (Nw-D), i = 0 ; j < Nw; j++, i++ ) {
+ input[j] = *inbuf++;
+ }
+
+ fold( input, Wanal, Nw, buffer, N, in );
+ rdft( N, 1, buffer, bitshuffle, trigland );
+ convert( buffer, channel, N2, lastphase_in, fundamental, factor_in );
+ if( grains_per_frame > hi_bin - lo_bin )
+ grains_per_frame = hi_bin - lo_bin;
+// binsort[0] = 0;
+ for( i = 0; i < hi_bin; i++ ){// could be hi_bin - lo_bin
+ binsort[i] = i + lo_bin;
+ }
+ for( i = lo_bin; i < hi_bin - 1; i++ ){
+ for( j = i+1; j < hi_bin; j++ ){
+ if(channel[binsort[j] * 2] > channel[binsort[i] * 2]) {
+ tmp = binsort[j];
+ binsort[j] = binsort[i];
+ binsort[i] = tmp;
+ }
+ }
+ }
+ for( i = 0; i < grains_per_frame; i++ ){
+ print_grain = 1;
+ dice = pvgrain_randf(0.,1.);
+ if( dice < 0.0 || dice > 1.0 ){
+ error("dice %f out of range", dice);
+ }
+ if( selection_probability < 1.0 ){
+ if( dice > selection_probability) {
+ print_grain = 0;
+ }
+ }
+ if( print_grain ){
+ x->listdata[ x->list_count * 2 ] = channel[ binsort[i]*2 ];
+ x->listdata[ (x->list_count * 2) + 1 ] = channel[(binsort[i]*2) + 1] ;
+ ++(x->list_count);
+ clock_delay(x->m_clock,0);
+ }
+ }
+ x->inCount = in % Nw;
+
+ return (w+4);
+}
+
+float pvgrain_randf(float min, float max) {
+ float guess;
+ guess = (float) (rand() % RAND_MAX) / (float) RAND_MAX ;
+ return ( min + guess * (max - min) );
+}
+
+void pvgrain_mute(t_pvgrain *x, t_floatarg state)
+{
+ x->mute = (short)state;
+}
+
+#if MSP
+void pvgrain_float(t_pvgrain *x, double f) // Look at floats at inlets
+{
+int inlet = x->x_obj.z_in;
+
+ if (inlet == 1)
+ {
+ x->P = f;
+ //post("P set to %f",f);
+ }
+ else if (inlet == 2)
+ {
+ x->synt = f;
+ //post("synt set to %f",f);
+ }
+}
+#endif
+
+void pvgrain_dsp(t_pvgrain *x, t_signal **sp, short *count)
+{
+ /* long i;
+ if( count[1] ){
+ x->pitch_connected = 1;
+ } else {
+ x->pitch_connected = 0;
+ }
+ if( count[2] ){
+ x->synt_connected = 1;
+ } else {
+ x->synt_connected = 0;
+ }
+ */
+ if(x->vs != sp[0]->s_n || x->R != sp[0]->s_sr){
+ x->vs = sp[0]->s_n;
+ x->R = sp[0]->s_sr;
+ pvgrain_init(x,1);
+ }
+ dsp_add(pvgrain_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
+}
+
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