diff options
Diffstat (limited to 'leaker~.c')
| -rw-r--r-- | leaker~.c | 467 |
1 files changed, 467 insertions, 0 deletions
diff --git a/leaker~.c b/leaker~.c new file mode 100644 index 0000000..ccdb6a0 --- /dev/null +++ b/leaker~.c @@ -0,0 +1,467 @@ +#include "MSPd.h"
+#include "fftease.h"
+
+#if MSP
+void *leaker_class;
+#endif
+
+#if PD
+static t_class *leaker_class;
+#endif
+
+#define OBJECT_NAME "leaker~"
+
+
+typedef struct _leaker
+{
+#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;
+
+ int *sieve ;
+ //
+ int inCount;
+ float *Hwin;
+ float *Wanal;
+ float *Wsyn;
+ float *output;
+ /* leaker 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 mult;
+ float *trigland;
+ int *bitshuffle;
+ short mute;
+ short bypass;
+ short fade_connected;
+ float fade_value;
+ int overlap;
+ int winfac;
+} t_leaker;
+
+static void leaker_free(t_leaker *x);
+void *leaker_new(t_symbol *msg, short argc, t_atom *argv);
+//t_int *offset_perform(t_int *w);
+t_int *leaker_perform(t_int *w);
+void leaker_dsp(t_leaker *x, t_signal **sp, short *count);
+void leaker_assist(t_leaker *x, void *b, long m, long a, char *s);
+void leaker_upsieve(t_leaker *x) ;
+void leaker_downsieve(t_leaker *x) ;
+void leaker_randsieve(t_leaker *x) ;
+void leaker_bypass(t_leaker *x, t_floatarg state);
+void leaker_mute(t_leaker *x, t_floatarg state);
+void leaker_float(t_leaker *x, double f);
+void leaker_init(t_leaker *x, short initialized);
+void leaker_overlap(t_leaker *x, t_floatarg f);
+void leaker_winfac(t_leaker *x, t_floatarg f);
+void leaker_fftinfo(t_leaker *x);
+
+#if MSP
+void main(void)
+{
+ setup((t_messlist **)&leaker_class, (method)leaker_new, (method)leaker_free,
+ (short)sizeof(t_leaker), 0, A_GIMME, 0);
+ addmess((method)leaker_dsp, "dsp", A_CANT, 0);
+ addmess((method)leaker_assist,"assist",A_CANT,0);
+ addmess((method)leaker_upsieve, "upsieve", 0);
+ addmess((method)leaker_downsieve, "downsieve", 0);
+ addmess((method)leaker_randsieve, "randsieve", 0);
+ addmess((method)leaker_bypass,"bypass",A_DEFFLOAT,0);
+ addmess((method)leaker_mute,"mute",A_DEFFLOAT,0);
+ addmess((method)leaker_overlap,"overlap",A_DEFFLOAT,0);
+ addmess((method)leaker_winfac,"winfac",A_DEFFLOAT,0);
+ addmess((method)leaker_fftinfo,"fftinfo",0);
+ addfloat((method)leaker_float);
+ dsp_initclass();
+ post("%s %s",OBJECT_NAME,FFTEASE_ANNOUNCEMENT);
+}
+#endif
+
+#if PD
+void leaker_tilde_setup(void)
+{
+ leaker_class = class_new(gensym("leaker~"), (t_newmethod)leaker_new,
+ (t_method)leaker_free ,sizeof(t_leaker), 0,A_GIMME,0);
+ CLASS_MAINSIGNALIN(leaker_class, t_leaker, x_f);
+ class_addmethod(leaker_class, (t_method)leaker_dsp, gensym("dsp"), 0);
+ class_addmethod(leaker_class, (t_method)leaker_mute, gensym("mute"), A_DEFFLOAT,0);
+ class_addmethod(leaker_class, (t_method)leaker_bypass, gensym("bypass"), A_DEFFLOAT,0);
+ class_addmethod(leaker_class, (t_method)leaker_mute, gensym("mute"), A_DEFFLOAT,0);
+ class_addmethod(leaker_class, (t_method)leaker_overlap, gensym("overlap"), A_DEFFLOAT,0);
+ class_addmethod(leaker_class, (t_method)leaker_winfac, gensym("winfac"), A_DEFFLOAT,0);
+ class_addmethod(leaker_class, (t_method)leaker_fftinfo, gensym("fftinfo"),0);
+ class_addmethod(leaker_class, (t_method)leaker_upsieve, gensym("upsieve"), 0);
+ class_addmethod(leaker_class, (t_method)leaker_downsieve, gensym("downsieve"),0);
+ class_addmethod(leaker_class, (t_method)leaker_randsieve, gensym("randsieve"),0);
+ post("%s %s",OBJECT_NAME,FFTEASE_ANNOUNCEMENT);
+}
+#endif
+
+void leaker_overlap(t_leaker *x, t_floatarg f)
+{
+int i = (int) f;
+ if(!power_of_two(i)){
+ error("%f is not a power of two",f);
+ return;
+ }
+ x->overlap = i;
+ leaker_init(x,1);
+}
+
+void leaker_winfac(t_leaker *x, t_floatarg f)
+{
+int i = (int)f;
+
+ if(!power_of_two(i)){
+ error("%f is not a power of two",f);
+ return;
+ }
+ x->winfac = i;
+ leaker_init(x,2);
+}
+
+void leaker_fftinfo(t_leaker *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 leaker_free( t_leaker *x ){
+#if MSP
+ dsp_free((t_pxobject *)x);
+#endif
+ freebytes(x->c_lastphase_in1,0);
+ freebytes(x->c_lastphase_in2,0);
+ freebytes(x->c_lastphase_out,0);
+ 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);
+ freebytes(x->sieve,0);
+}
+
+void leaker_upsieve(t_leaker *x) {
+ int i;
+ for( i = 0; i < x->N2; i++ ){
+ x->sieve[i] = i + 1;
+ }
+}
+
+void leaker_downsieve(t_leaker *x) {
+ int i;
+ for( i = 0; i < x->N2; i++ ){
+ x->sieve[i] = x->N2 - i;
+ }
+}
+
+void leaker_randsieve(t_leaker *x) {
+ int i,j;
+ int NSwitch = 100000 ;
+ int temp ;
+ int pos1, pos2;
+
+ // use better algorithm
+
+ for( i = 0; i < x->N2; i++ ){
+ x->sieve[i] = i + 1;
+ }
+ for( i = 0; i < NSwitch; i++ ){
+ pos1 = rand() % x->N2;
+ pos2 = rand() % x->N2;
+ temp = x->sieve[pos2];
+ x->sieve[pos2] = x->sieve[pos1];
+ x->sieve[pos1] = temp ;
+ }
+}
+
+void leaker_bypass(t_leaker *x, t_floatarg state)
+{
+ x->bypass = (short)state;
+}
+void leaker_mute(t_leaker *x, t_floatarg state)
+{
+ x->mute = (short)state;
+}
+
+
+void leaker_assist (t_leaker *x, void *b, long msg, long arg, char *dst)
+{
+ if (msg==1) {
+ switch (arg) {
+ case 0: sprintf(dst,"(signal) Input 1");break;
+ case 1: sprintf(dst,"(signal) Input 2");break;
+ case 2: sprintf(dst,"(signal/float) Crossfade Position (0.0 - 1.0)");break;
+ }
+ } else if (msg==2) {
+ sprintf(dst,"(signal) Output ");
+ }
+}
+
+void *leaker_new(t_symbol *msg, short argc, t_atom *argv)
+{
+#if MSP
+ t_leaker *x = (t_leaker *)newobject(leaker_class);
+ dsp_setup((t_pxobject *)x,3);
+ outlet_new((t_pxobject *)x, "signal");
+#endif
+
+#if PD
+ t_leaker *x = (t_leaker *)pd_new(leaker_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->D = sys_getblksize();
+ x->R = sys_getsr();
+ if(!x->D)
+ x->D = 256;
+ if(!x->R)
+ x->R = 44100;
+
+ x->overlap = atom_getfloatarg(0,argc,argv);
+ x->winfac = atom_getfloatarg(1,argc,argv);
+ if(!x->overlap)
+ x->overlap = 4;
+ if(!x->winfac)
+ x->winfac = 1;
+
+ leaker_init(x,0);
+ return (x);
+}
+
+void leaker_init(t_leaker *x, short initialized)
+{
+ int i;
+ if(!power_of_two(x->overlap))
+ x->overlap = 4;
+ if(!power_of_two(x->winfac))
+ x->winfac = 2;
+ 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->mute = 0;
+ x->bypass = 0;
+ x->fade_connected = 0;
+ x->fade_value = 0;
+
+ 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->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->sieve = (int *) getbytes((MAX_N2 + 1) * sizeof(int));
+ 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);
+ memset((char *)x->input2,0,x->Nw);
+ memset((char *)x->output,0,x->Nw);
+ 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);
+ if(initialized != 2){
+ for(i = 0; i < x->N2; i++){
+ x->sieve[i] = i;
+ }
+ }
+}
+
+t_int *leaker_perform(t_int *w)
+{
+ int i,j,odd,even;
+ float a1,a2,b1,b2;
+
+ t_leaker *x = (t_leaker *) (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];
+
+ float fade_value = x->fade_value;
+ float *input1 = x->input1;
+ float *input2 = x->input2;
+ 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 *buffer1 = x->buffer1;
+ float *buffer2 = x->buffer2;
+ float *channel1 = x->channel1;
+ float *channel2 = x->channel2;
+ int *sieve = x->sieve;
+ int *bitshuffle = x->bitshuffle;
+ float *trigland = x->trigland;
+ float mult = x->mult;
+
+ /* dereference struncture */
+ if( x->mute) {
+ while(n--){
+ *out++ = 0.;
+ }
+ return (w+7);
+ }
+ if( x->bypass ) {
+ while(n--){
+ *out++ = *in1++;
+ }
+ return (w+7);
+ }
+
+#if MSP
+ if(x->fade_connected)
+ fade_value = *in3++ * (float) N2;
+#endif
+
+#if PD
+ fade_value = *in3++ * (float) N2;
+#endif
+
+ 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);
+
+
+ for ( i = 0; i <= N2; i++ ) {
+ odd = ( even = i<<1 ) + 1;
+ if( fade_value <= 0 || fade_value < sieve[i] ){
+ a1 = ( i == N2 ? *(buffer1+1) : *(buffer1+even) );
+ b1 = ( i == 0 || i == N2 ? 0. : *(buffer1+odd) );
+
+ *(channel1+even) = hypot( a1, b1 ) ;
+ *(channel1+odd) = -atan2( b1, a1 );
+ *(buffer1+even) = *(channel1+even) * cos(*(channel1+odd));
+ if ( i != N2 ){
+ *(buffer1+odd) = -(*(channel1+even)) * sin(*(channel1+odd));
+ }
+ } else {
+ a2 = ( i == N2 ? *(buffer2+1) : *(buffer2+even) );
+ b2 = ( i == 0 || i == N2 ? 0. : *(buffer2+odd) );
+ *(channel1+even) = hypot( a2, b2 ) ;
+ *(channel1+odd) = -atan2( b2, a2 );
+ *(buffer1+even) = *(channel1+even) * cos(*(channel1+odd) );
+ if ( i != N2 ){
+ *(buffer1+odd) = -(*(channel1+even)) * sin( *(channel1+odd) );
+ }
+ }
+ }
+
+ rdft( N, -1, buffer1, bitshuffle, trigland );
+ overlapadd( buffer1, N, Wsyn, output, Nw, inCount);
+
+ for ( j = 0; j < D; j++ )
+ *out++ = output[j] * mult;
+
+ for ( j = 0; j < Nw - D; j++ )
+ output[j] = output[j+D];
+
+ for ( j = Nw - D; j < Nw; j++ )
+ output[j] = 0.;
+
+ x->inCount = inCount % Nw;
+
+ return (w+7);
+}
+
+void leaker_dsp(t_leaker *x, t_signal **sp, short *count)
+{
+ long i;
+#if MSP
+ x->fade_connected = count[2];
+#endif
+ if(x->R != sp[0]->s_sr || x->D != sp[0]->s_n){
+ x->R = sp[0]->s_sr;
+ x->D = sp[0]->s_n;
+ leaker_init(x,1);
+ }
+
+ dsp_add(leaker_perform, 6, x,
+ sp[0]->s_vec,sp[1]->s_vec,sp[2]->s_vec,sp[3]->s_vec,sp[0]->s_n);
+}
+#if MSP
+void leaker_float(t_leaker *x, double f)
+{
+ int inlet = x->x_obj.z_in;
+ if( inlet == 2 && f >= 0 && f <= 1){
+ x->fade_value = f * (float) x->N2;
+ }
+}
+#endif
+
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