From b418fb91e7bb45d7b5f1eb8b19703441ae94eb13 Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <eighthave@users.sourceforge.net>
Date: Thu, 9 Feb 2006 16:18:39 +0000
Subject: got everything building and working, including building
 single-object/single-file objects with a shared dylib.  Now got to get it
 integrated into the build system

svn path=/trunk/externals/fftease/; revision=4574
---
 leaker~.c | 467 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 467 insertions(+)
 create mode 100644 leaker~.c

(limited to 'leaker~.c')

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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