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/* this external is based on nop~ which was part of zexy-1.x, see the copyright notice below:
* ZEXY is published under the GNU GeneralPublicLicense, that must be shipped with ZEXY.
* if you are using Debian GNU/linux, the GNU-GPL can be found under /usr/share/common-licenses/GPL
* if you still haven't found a copy of the GNU-GPL, have a look at http://www.gnu.org
*
* "pure data" has it's own license, that comes shipped with "pure data".
*
* there are ABSOLUTELY NO WARRANTIES for anything
it does absolutely the same as z~ 64, but since it uses simd instructions, it's faster.
*/
/* ------------------------ block_delay~ ----------------------------- */
/* this will pass trough the signal unchanged except for a delay of 1 block */
#include "m_pd.h"
static t_class *block_delay_tilde_class;
typedef struct _block_delay
{
t_object x_obj;
t_float *buf;
int n;
int toggle;
} t_block_delay;
static t_int *block_delay_tilde_perfsimd(t_int *w)
{
t_float *in = (t_float *)w[1];
t_float *out = (t_float *)w[2];
t_block_delay *x = (t_block_delay *)w[3];
int n = x->n;
t_float *rp = x->buf + n * x->toggle, *wp = x->buf + n * (x->toggle ^= 1);
copyvec_simd(wp, in, n);
copyvec_simd(out, rp, n);
return (w+4);
}
static t_int *block_delay_tilde_perform(t_int *w)
{
t_float *in = (t_float *)w[1];
t_float *out = (t_float *)w[2];
t_block_delay *x = (t_block_delay *)w[3];
int n = x->n;
t_float *rp = x->buf + n * x->toggle, *wp = x->buf + n * (x->toggle ^= 1);
while (n--) {
*wp++ = *in++;
*out++ = *rp++;
}
return (w+4);
}
static void block_delay_tilde_dsp(t_block_delay *x, t_signal **sp)
{
if (x->n != sp[0]->s_n)
{
if (x->n)
freealignedbytes(x->buf, x->n * 2 * sizeof(t_float));
x->buf = (t_float *)getalignedbytes(sizeof(t_float) * 2 * (x->n = sp[0]->s_n));
}
if (simd_check2(sp[0]->s_n, sp[0]->s_vec, sp[1]->s_vec))
dsp_add(block_delay_tilde_perfsimd, 3, sp[0]->s_vec, sp[1]->s_vec, x);
else
dsp_add(block_delay_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, x);
}
static void block_delay_tilde_free(t_block_delay *x)
{
if (x->buf)
freealignedbytes(x->buf, x->n * sizeof(t_float));
}
static void *block_delay_tilde_new(void)
{
t_block_delay *x = (t_block_delay *)pd_new(block_delay_tilde_class);
outlet_new(&x->x_obj, gensym("signal"));
x->toggle = 0;
x->n = 0;
return (x);
}
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), 0, A_DEFFLOAT, 0);
class_addmethod(block_delay_tilde_class, nullfn, gensym("signal"), 0);
class_addmethod(block_delay_tilde_class, (t_method)block_delay_tilde_dsp, gensym("dsp"), 0);
}
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