diff options
Diffstat (limited to 'crossx~.c')
| -rw-r--r-- | crossx~.c | 449 |
1 files changed, 449 insertions, 0 deletions
diff --git a/crossx~.c b/crossx~.c new file mode 100644 index 0000000..70739f0 --- /dev/null +++ b/crossx~.c @@ -0,0 +1,449 @@ +#include "MSPd.h"
+
+#include "fftease.h"
+
+#if MSP
+void *crossx_class;
+#endif
+
+#if PD
+static t_class *crossx_class;
+#endif
+
+#define OBJECT_NAME "crossx~"
+
+typedef struct _crossx
+{
+#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;
+ float *input1;
+ float *buffer1;
+ float *channel1;
+
+ float *input2;
+ float *buffer2;
+ float *channel2;
+ float *last_channel;
+ //
+ int inCount;
+ float *Hwin;
+ float *Wanal;
+ float *Wsyn;
+ float *output;
+ /* crossx vars */
+
+ float *c_lastphase_in1;
+ float *c_lastphase_in2;
+ float *c_lastphase_out;
+ float c_fundamental;
+ float c_factor_in;
+ float c_factor_out;
+
+ float threshie;
+ short thresh_connected;
+ // for fast fft
+ float mult;
+ float *trigland;
+ int *bitshuffle;
+ int overlap;//overlap factor
+ int winfac;//window factor
+ int vs;//vector size
+ short mute;//flag
+ short autonorm;// for self gain regulation
+} t_crossx;
+
+void *crossx_new(t_symbol *s, int argc, t_atom *argv);
+t_int *offset_perform(t_int *w);
+t_int *crossx_perform(t_int *w);
+void crossx_dsp(t_crossx *x, t_signal **sp, short *count);
+void crossx_assist(t_crossx *x, void *b, long m, long a, char *s);
+void crossx_float(t_crossx *x, double f);
+void *crossx_new(t_symbol *s, int argc, t_atom *argv);
+void crossx_init(t_crossx *x, short initialized);
+void crossx_overlap(t_crossx *x, t_floatarg o);
+void crossx_winfac(t_crossx *x, t_floatarg o);
+void crossx_fftinfo(t_crossx *x);
+void crossx_mute(t_crossx *x, t_floatarg toggle);
+void crossx_autonorm(t_crossx *x, t_floatarg toggle);
+void crossx_free(t_crossx *x);
+
+#if MSP
+void main(void)
+{
+ setup((t_messlist **)&crossx_class, (method)crossx_new, (method)dsp_free,
+ (short)sizeof(t_crossx), 0L, A_GIMME, 0);
+ addmess((method)crossx_dsp, "dsp", A_CANT, 0);
+ addmess((method)crossx_assist,"assist",A_CANT,0);
+ addmess((method)crossx_mute,"mute",A_DEFFLOAT,0);
+ addmess((method)crossx_overlap, "overlap", A_DEFFLOAT, 0);
+ addmess((method)crossx_winfac, "winfac", A_DEFFLOAT, 0);
+ addmess((method)crossx_fftinfo, "fftinfo", 0);
+ addmess((method)crossx_autonorm, "autonorm", A_DEFFLOAT, 0);
+ addfloat((method)crossx_float);
+ dsp_initclass();
+ post("%s %s",OBJECT_NAME,FFTEASE_ANNOUNCEMENT);
+}
+#endif
+#if PD
+void crossx_tilde_setup(void)
+{
+ crossx_class = class_new(gensym("crossx~"), (t_newmethod)crossx_new,
+ (t_method)crossx_free ,sizeof(t_crossx), 0,A_GIMME,0);
+ CLASS_MAINSIGNALIN(crossx_class, t_crossx, x_f);
+ class_addmethod(crossx_class, (t_method)crossx_dsp, gensym("dsp"), 0);
+ class_addmethod(crossx_class, (t_method)crossx_assist, gensym("assist"), 0);
+ class_addmethod(crossx_class, (t_method)crossx_mute, gensym("mute"), A_DEFFLOAT,0);
+ class_addmethod(crossx_class, (t_method)crossx_overlap, gensym("overlap"), A_DEFFLOAT,0);
+ class_addmethod(crossx_class, (t_method)crossx_winfac, gensym("winfac"), A_DEFFLOAT,0);
+ class_addmethod(crossx_class, (t_method)crossx_fftinfo, gensym("fftinfo"), 0);
+ class_addmethod(crossx_class, (t_method)crossx_autonorm, gensym("autonorm"), A_DEFFLOAT,0);
+ post("%s %s",OBJECT_NAME,FFTEASE_ANNOUNCEMENT);
+post("padded memory");
+}
+#endif
+
+
+void crossx_autonorm(t_crossx *x, t_floatarg toggle)
+{
+ x->autonorm = (short) toggle;
+}
+void crossx_assist (t_crossx *x, void *b, long msg, long arg, char *dst)
+{
+ if (msg==1) {
+ switch (arg) {
+ case 0:
+ sprintf(dst,"(signal) Driver Sound");
+ break;
+ case 1:
+ sprintf(dst,"(signal) Filter Sound");
+ break;
+ case 2:
+ sprintf(dst,"(float/signal) Cross Synthesis Threshold");
+ break;
+
+ }
+ } else if (msg==2) {
+ sprintf(dst,"(signal) Output");
+ }
+}
+
+void crossx_overlap(t_crossx *x, t_floatarg o)
+{
+ if(!power_of_two((int)o)){
+ error("%f is not a power of two",o);
+ return;
+ }
+ x->overlap = (int)o;
+ crossx_init(x,1);
+}
+
+void crossx_winfac(t_crossx *x, t_floatarg f)
+{
+ if(!power_of_two((int)f)){
+ error("%f is not a power of two",f);
+ return;
+ }
+ x->winfac = (int)f;
+ crossx_init(x,1);
+}
+
+void crossx_fftinfo( t_crossx *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 crossx_mute(t_crossx *x, t_floatarg toggle)
+{
+ x->mute = (short)toggle;
+}
+
+void crossx_free(t_crossx *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->input1,0);
+ freebytes(x->input2,0);
+ freebytes(x->Hwin,0);
+ freebytes(x->buffer1,0);
+ freebytes(x->buffer2,0);
+ freebytes(x->channel1,0);
+ freebytes(x->channel2,0);
+ freebytes(x->output,0);
+ /* these last are extra - kill if we clean up - upstairs
+ free(x->c_lastphase_in1);
+ free(x->c_lastphase_in2);
+ free(x->c_lastphase_out);
+ free(x->last_channel);*/
+}
+
+#if MSP
+void crossx_float(t_crossx *x, double f) // Look at floats at inlets
+{
+int inlet = x->x_obj.z_in;
+
+ if (inlet == 2)
+ {
+ x->threshie = f;
+ }
+}
+#endif
+
+void *crossx_new(t_symbol *s, int argc, t_atom *argv)
+{
+#if MSP
+ t_crossx *x = (t_crossx *)newobject(crossx_class);
+ dsp_setup((t_pxobject *)x,3);
+ outlet_new((t_pxobject *)x, "signal");
+#endif
+#if PD
+ t_crossx *x = (t_crossx *)pd_new(crossx_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"));
+#endif
+
+
+ x->overlap = atom_getfloatarg(0,argc,argv);
+ x->winfac = atom_getfloatarg(1,argc,argv);
+ if(x->overlap <= 0)
+ x->overlap = 4;
+
+ x->winfac = 1;
+
+ x->R = sys_getsr();
+ x->vs = sys_getblksize();
+
+ crossx_init(x,0);
+ return (x);
+}
+
+void crossx_init(t_crossx *x, short initialized)
+{
+ int i;
+
+ 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->c_fundamental = (float) x->R/( (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->threshie = .001 ;
+ x->autonorm = 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->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->input1 = (float *) getbytes(MAX_Nw * sizeof(float));
+ x->buffer1 = (float *) getbytes(MAX_N * sizeof(float));
+ x->channel1 = (float *) getbytes((MAX_N+2) * sizeof(float));
+ x->input2 = (float *) getbytes(MAX_Nw * sizeof(float));
+ x->buffer2 = (float *) getbytes(MAX_N * sizeof(float));
+ x->channel2 = (float *) getbytes((MAX_N+2) * sizeof(float));
+ x->last_channel = (float *) getbytes((MAX_N+2) * sizeof(float));
+ x->c_lastphase_in1 = (float *) getbytes((MAX_N2+1) * sizeof(float));
+ x->c_lastphase_in2 = (float *) getbytes((MAX_N2+1) * sizeof(float));
+ x->c_lastphase_out = (float *) getbytes((MAX_N2+1) * sizeof(float));
+ }
+ memset((char *)x->input1,0,x->Nw * sizeof(float));
+ memset((char *)x->input2,0,x->Nw * sizeof(float));
+ memset((char *)x->output,0,x->Nw * sizeof(float));
+ memset((char *)x->buffer1,0,x->N * sizeof(float));
+ memset((char *)x->buffer2,0,x->N * sizeof(float));
+ memset((char *)x->channel1,0,(x->N+2) * sizeof(float));
+ memset((char *)x->channel2,0,(x->N+2) * sizeof(float));
+ memset((char *)x->c_lastphase_in1,0,(x->N2+1) * sizeof(float));
+ memset((char *)x->c_lastphase_in2,0,(x->N2+1) * sizeof(float));
+ memset((char *)x->c_lastphase_out,0,(x->N2+1) * sizeof(float));
+
+ init_rdft( x->N, x->bitshuffle, x->trigland);
+ makehanning( x->Hwin, x->Wanal, x->Wsyn, x->Nw, x->N, x->D, 0);
+}
+
+t_int *crossx_perform(t_int *w)
+{
+ int i, j;
+
+ float a1, a2, b1, b2;
+ int even, odd;
+ int amp, freq;
+ float gainer, threshie;
+ float ingain = 0;
+ float outgain, rescale;
+ float mymult;
+
+ t_crossx *x = (t_crossx *) (w[1]);
+ t_float *in1 = (t_float *)(w[2]);
+ t_float *in2 = (t_float *)(w[3]);
+ t_float *in3 = (t_float *)(w[4]);
+ t_float *out = (t_float *)(w[5]);
+ t_int n = w[6];
+
+ /* dereference struncture */
+ float *input1 = x->input1;
+ float *input2 = x->input2;
+ float *buffer1 = x->buffer1;
+ float *buffer2 = x->buffer2;
+ int inCount = x->inCount;
+ int R = x->R;
+ int N = x->N;
+ int N2 = x->N2;
+ int D = x->D;
+ int Nw = x->Nw;
+ float *Wanal = x->Wanal;
+ float *Wsyn = x->Wsyn;
+ float *output = x->output;
+ float *channel1 = x->channel1;
+ float *channel2 = x->channel2;
+ float *last_channel = x->last_channel;
+ int *bitshuffle = x->bitshuffle;
+ float *trigland = x->trigland;
+ float mult = x->mult;
+ float *c_lastphase_in1 = x->c_lastphase_in1;
+ float *c_lastphase_in2 = x->c_lastphase_in2;
+float *c_lastphase_out = x->c_lastphase_out;
+float c_fundamental = x->c_fundamental;
+ float c_factor_in = x->c_factor_in;
+ float c_factor_out = x->c_factor_out;
+ short autonorm = x->autonorm;
+
+ if(x->mute){
+ while(n--){
+ *out++ = 0;
+ }
+ return w+7;
+ }
+
+ if( x->thresh_connected ){
+ threshie = *in3++;
+ } else {
+ threshie = x->threshie;
+ }
+
+ inCount += D;
+
+ for ( j = 0 ; j < Nw - D ; j++ ){
+ input1[j] = input1[j+D];
+ input2[j] = input2[j+D];
+ }
+ for ( j = Nw - D; j < Nw; j++ ) {
+ input1[j] = *in1++;
+ input2[j] = *in2++;
+ }
+
+ fold( input1, Wanal, Nw, buffer1, N, inCount );
+ fold( input2, Wanal, Nw, buffer2, N, inCount );
+ rdft( N, 1, buffer1, bitshuffle, trigland );
+ rdft( N, 1, buffer2, bitshuffle, trigland );
+
+/* changing algorithm for window flexibility */
+ if(autonorm){
+ ingain = 0;
+ for(i = 0; i < N; i+=2){
+ ingain += hypot(buffer1[i], buffer1[i+1]);
+ }
+ }
+
+ for ( i = 0; i <= N2; i++ ) {
+ odd = ( even = i<<1 ) + 1;
+
+ a1 = ( i == N2 ? *(buffer1+1) : *(buffer1+even) );
+ b1 = ( i == 0 || i == N2 ? 0. : *(buffer1+odd) );
+ a2 = ( i == N2 ? *(buffer2+1) : *(buffer2+even) );
+ b2 = ( i == 0 || i == N2 ? 0. : *(buffer2+odd) );
+ gainer = hypot(a2, b2);
+ if( gainer > threshie )
+ *(channel1+even) = hypot( a1, b1 ) * gainer;
+ *(channel1+odd) = -atan2( b1, a1 );
+ *(buffer1+even) = *(channel1+even) * cos( *(channel1+odd) );
+ if ( i != N2 )
+ *(buffer1+odd) = -(*(channel1+even)) * sin( *(channel1+odd) );
+
+ }
+ if(autonorm){
+ outgain = 0;
+ for(i = 0; i < N; i+=2){
+ outgain += hypot(buffer1[i], buffer1[i+1]);
+ }
+ if(ingain <= .0000001){
+ // post("gain emergency!");
+ rescale = 1.0;
+ } else {
+ rescale = ingain / outgain;
+ }
+ // post("ingain %f outgain %f rescale %f",ingain, outgain, rescale);
+ mymult = mult * rescale;
+ } else {
+ mymult = mult;
+ }
+
+ rdft( N, -1, buffer1, bitshuffle, trigland );
+ overlapadd( buffer1, N, Wsyn, output, Nw, inCount);
+
+ for ( j = 0; j < D; j++ )
+ *out++ = output[j] * mymult;
+
+ for ( j = 0; j < Nw - D; j++ )
+ output[j] = output[j+D];
+
+ for ( j = Nw - D; j < Nw; j++ )
+ output[j] = 0.;
+
+
+
+ /* restore state variables */
+ x->inCount = inCount % Nw;
+ return (w+7);
+}
+
+void crossx_dsp(t_crossx *x, t_signal **sp, short *count)
+{
+#if MSP
+ x->thresh_connected = count[2];
+#endif
+#if PD
+ x->thresh_connected = 1;
+#endif
+
+ 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;
+ crossx_init(x,1);
+ }
+
+ dsp_add(crossx_perform, 6, x, sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec,
+ sp[3]->s_vec, sp[0]->s_n);
+}
+
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