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/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
iem_delay written by Thomas Musil (c) IEM KUG Graz Austria 2002 - 2006 */
#include "m_pd.h"
#include "iemlib.h"
#include "iem_delay.h"
/* -------------------------- block_delay~ ------------------------------ */
static t_class *block_delay_tilde_class;
typedef struct _block_delay_tilde
{
t_object x_obj;
t_float *x_begmem;
int x_blocksize;
t_float x_msi;
} t_block_delay_tilde;
static t_int *block_delay_tilde_perform(t_int *w)
{
t_float *in = (float *)(w[1]);
t_float *out = (float *)(w[2]);
t_block_delay_tilde *x = (t_block_delay_tilde *)(w[3]);
int i, n = (t_int)(w[4]);
t_float *rw_vec, f;
rw_vec = x->x_begmem;
for(i=0; i<n; i++)
{
f = in[i];
out[i] = rw_vec[i];
rw_vec[i] = f;
}
return(w+5);
}
static t_int *block_delay_tilde_perf8(t_int *w)
{
t_float *in = (float *)(w[1]);
t_float *out = (float *)(w[2]);
t_block_delay_tilde *x = (t_block_delay_tilde *)(w[3]);
int i, n = (t_int)(w[4]);
t_float *rw_vec, f[8];
rw_vec = x->x_begmem;
while(n)
{
f[0] = in[0];
f[1] = in[1];
f[2] = in[2];
f[3] = in[3];
f[4] = in[4];
f[5] = in[5];
f[6] = in[6];
f[7] = in[7];
out[0] = rw_vec[0];
out[1] = rw_vec[1];
out[2] = rw_vec[2];
out[3] = rw_vec[3];
out[4] = rw_vec[4];
out[5] = rw_vec[5];
out[6] = rw_vec[6];
out[7] = rw_vec[7];
rw_vec[0] = f[0];
rw_vec[1] = f[1];
rw_vec[2] = f[2];
rw_vec[3] = f[3];
rw_vec[4] = f[4];
rw_vec[5] = f[5];
rw_vec[6] = f[6];
rw_vec[7] = f[7];
rw_vec += 8;
in += 8;
out += 8;
n -= 8;
}
return(w+5);
}
static void block_delay_tilde_dsp(t_block_delay_tilde *x, t_signal **sp)
{
int n = sp[0]->s_n;
if(!x->x_blocksize)/*first time*/
x->x_begmem = (t_float *)getbytes(n * sizeof(t_float));
else if(x->x_blocksize != n)
x->x_begmem = (t_float *)resizebytes(x->x_begmem, x->x_blocksize*sizeof(t_float), n*sizeof(t_float));
x->x_blocksize = n;
if(n&7)
dsp_add(block_delay_tilde_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
else
dsp_add(block_delay_tilde_perf8, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
}
static void *block_delay_tilde_new(void)
{
t_block_delay_tilde *x = (t_block_delay_tilde *)pd_new(block_delay_tilde_class);
x->x_blocksize = 0;
x->x_begmem = (t_float *)0;
outlet_new(&x->x_obj, &s_signal);
x->x_msi = 0.0f;
return (x);
}
static void block_delay_tilde_free(t_block_delay_tilde *x)
{
if(x->x_begmem)
freebytes(x->x_begmem, x->x_blocksize * sizeof(t_float));
}
void block_delay_tilde_setup(void)
{
block_delay_tilde_class = class_new(gensym("block_delay~"), (t_newmethod)block_delay_tilde_new, (t_method)block_delay_tilde_free,
sizeof(t_block_delay_tilde), 0, 0);
CLASS_MAINSIGNALIN(block_delay_tilde_class, t_block_delay_tilde, x_msi);
class_addmethod(block_delay_tilde_class, (t_method)block_delay_tilde_dsp, gensym("dsp"), 0);
// class_sethelpsymbol(block_delay_tilde_class, gensym("iemhelp2/block_delay~-help"));
}
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