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/* Copyright (C) 2007 Gabriel Maldonado
Csound is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
//#include "csdl.h"
#include "csoundCore.h"
#include "interlocks.h"
typedef struct {
OPDS h;
MYFLT *out, *xindex, *xinterpoint, *xtabndx1, *xtabndx2,
*argums[VARGMAX];
MYFLT *table[VARGMAX];
int32_t length;
int64_t numOfTabs;
} TABMORPH;
static int32_t tabmorph_set (CSOUND *csound, TABMORPH *p) /*Gab 13-March-2005 */
{
int32_t numOfTabs,j;
MYFLT **argp, *first_table = NULL;
FUNC *ftp;
int64_t flength = 0;
numOfTabs = p->numOfTabs =((p->INCOUNT-4)); /* count segs & alloc if nec */
argp = p->argums;
for (j=0; j< numOfTabs; j++) {
if (UNLIKELY((ftp = csound->FTnp2Find(csound, *argp++)) == NULL))
return csound->InitError(csound, Str("tabmorph: invalid table number"));
if (UNLIKELY(ftp->flen != flength && flength != 0))
return
csound->InitError(csound,
Str("tabmorph: all tables must have the "
"same length!"));
flength = ftp->flen;
if (j==0) first_table = ftp->ftable;
p->table[j] = ftp->ftable;
}
p->table[j] = first_table; /* for interpolation */
p->length = flength;
return OK;
}
static int32_t tabmorph(CSOUND *csound, TABMORPH *p)
{
IGN(csound);
MYFLT /* index, index_frac, */ tabndx1, tabndx2, tabndx1frac, tabndx2frac;
MYFLT tab1val1,tab1val2, tab2val1, tab2val2, interpoint, val1, val2;
int64_t index_int;
int32_t tabndx1int, tabndx2int;
index_int = (int32_t) *p->xindex % p->length;
tabndx1 = *p->xtabndx1;
tabndx1int = (int32_t) tabndx1;
tabndx1frac = tabndx1 - tabndx1int;
tabndx1int %= p->numOfTabs;
tab1val1 = (p->table[tabndx1int ])[index_int];
tab1val2 = (p->table[tabndx1int+1])[index_int];
val1 = tab1val1 * (1-tabndx1frac) + tab1val2 * tabndx1frac;
tabndx2 = *p->xtabndx2;
tabndx2int = (int32_t) tabndx2;
tabndx2frac = tabndx2 - tabndx2int;
tabndx2int %= p->numOfTabs;
tab2val1 = (p->table[tabndx2int ])[index_int];
tab2val2 = (p->table[tabndx2int+1])[index_int];
val2 = tab2val1 * (1-tabndx2frac) + tab2val2 * tabndx2frac;
interpoint = *p->xinterpoint;
interpoint = (interpoint < 0 ? 0 : (interpoint > 1.0 ? 1.0 : interpoint));
/* interpoint -= (int32_t) interpoint; to limit to zero to 1 range */
*p->out = val1 * (1 - interpoint) + val2 * interpoint;
return OK;
}
static int32_t tabmorphi(CSOUND *csound, TABMORPH *p) /* interpolation */
{
IGN(csound);
MYFLT index, index_frac, tabndx1, tabndx2, tabndx1frac, tabndx2frac;
MYFLT tab1val1a,tab1val2a, tab2val1a, tab2val2a, interpoint, val1, val2;
MYFLT val1a, val2a, val1b, val2b, tab1val1b,tab1val2b, tab2val1b, tab2val2b;
int64_t index_int;
int32_t tabndx1int, tabndx2int;
index = *p->xindex;
index_int = (int32_t) index;
index_frac = index - index_int;
index_int %= p->length;
tabndx1 = *p->xtabndx1;
tabndx1int = (int32_t) tabndx1;
tabndx1frac = tabndx1 - tabndx1int;
tabndx1int %= p->numOfTabs;
tab1val1a = (p->table[tabndx1int ])[index_int];
tab1val2a = (p->table[tabndx1int+1])[index_int];
val1a = tab1val1a * (1-tabndx1frac) + tab1val2a * tabndx1frac;
tab1val1b = (p->table[tabndx1int ])[index_int+1];
tab1val2b = (p->table[tabndx1int+1])[index_int+1];
val1b = tab1val1b * (1-tabndx1frac) + tab1val2b * tabndx1frac;
val1 = val1a + (val1b-val1a) * index_frac;
/*--------------*/
tabndx2 = *p->xtabndx2;
tabndx2int = (int32_t) tabndx2;
tabndx2frac = tabndx2 - tabndx2int;
tabndx2int %= p->numOfTabs;
tab2val1a = (p->table[tabndx2int ])[index_int];
tab2val2a = (p->table[tabndx2int+1])[index_int];
val2a = tab2val1a * (1-tabndx2frac) + tab2val2a * tabndx2frac;
tab2val1b = (p->table[tabndx2int ])[index_int+1];
tab2val2b = (p->table[tabndx2int+1])[index_int+1];
val2b = tab2val1b * (1-tabndx2frac) + tab2val2b * tabndx2frac;
val2 = val2a + (val2b-val2a) * index_frac;
interpoint = *p->xinterpoint;
interpoint -= (int32_t) interpoint; /* to limit to zero to 1 range */
*p->out = val1 * (1 - interpoint) + val2 * interpoint;
return OK;
}
static int32_t atabmorphia(CSOUND *csound, TABMORPH *p) /* all arguments at a-rate */
{
IGN(csound);
uint32_t offset = p->h.insdshead->ksmps_offset;
uint32_t early = p->h.insdshead->ksmps_no_end;
uint32_t n, nsmps = CS_KSMPS;
int32_t tablen = p->length;
MYFLT *out = p->out;
MYFLT *index = p->xindex;
MYFLT *interpoint = p->xinterpoint;
MYFLT *tabndx1 = p->xtabndx1;
MYFLT *tabndx2 = p->xtabndx2;
if (UNLIKELY(offset)) memset(out, '\0', offset*sizeof(MYFLT));
if (UNLIKELY(early)) {
nsmps -= early;
memset(&out[nsmps], '\0', early*sizeof(MYFLT));
}
for (n=offset; n<nsmps; n++) {
MYFLT index_frac,tabndx1frac, tabndx2frac;
MYFLT tab1val1a,tab1val2a, tab2val1a, tab2val2a, val1, val2;
MYFLT val1a, val2a, val1b, val2b, tab1val1b,tab1val2b, tab2val1b, tab2val2b;
int64_t index_int;
int32_t tabndx1int, tabndx2int;
MYFLT ndx = index[n] * tablen;
index_int = (int32_t) ndx;
index_frac = ndx - index_int;
index_int %= tablen;
tabndx1int = (int32_t) tabndx1[n];
tabndx1frac = tabndx1[n] - tabndx1int;
tabndx1int %= p->numOfTabs;
tab1val1a = (p->table[tabndx1int ])[index_int];
tab1val2a = (p->table[tabndx1int+1])[index_int];
val1a = tab1val1a * (1-tabndx1frac) + tab1val2a * tabndx1frac;
tab1val1b = (p->table[tabndx1int ])[index_int+1];
tab1val2b = (p->table[tabndx1int+1])[index_int+1];
val1b = tab1val1b * (1-tabndx1frac) + tab1val2b * tabndx1frac;
val1 = val1a + (val1b-val1a) * index_frac;
/*--------------*/
tabndx2int = (int32_t) tabndx2[n];
tabndx2frac = tabndx2[n] - tabndx2int;
tabndx2int %= p->numOfTabs;
tab2val1a = (p->table[tabndx2int ])[index_int];
tab2val2a = (p->table[tabndx2int+1])[index_int];
val2a = tab2val1a * (1-tabndx2frac) + tab2val2a * tabndx2frac;
tab2val1b = (p->table[tabndx2int ])[index_int+1];
tab2val2b = (p->table[tabndx2int+1])[index_int+1];
val2b = tab2val1b * (1-tabndx2frac) + tab2val2b * tabndx2frac;
val2 = val2a + (val2b-val2a) * index_frac;
interpoint[n] -= (int32_t) interpoint[n]; /* to limit to zero to 1 range */
out[n] = val1 * (1 - interpoint[n]) + val2 * interpoint[n];
}
return OK;
}
/* all args k-rate except out and table index */
static int32_t atabmorphi(CSOUND *csound, TABMORPH *p)
{
IGN(csound);
uint32_t offset = p->h.insdshead->ksmps_offset;
uint32_t early = p->h.insdshead->ksmps_no_end;
uint32_t n, nsmps = CS_KSMPS;
int32_t tablen = p->length;
MYFLT *out = p->out;
MYFLT *index;
MYFLT tabndx1, tabndx2, tabndx1frac, tabndx2frac, interpoint;
int32_t tabndx1int, tabndx2int;
tabndx1 = *p->xtabndx1;
tabndx1int = (int32_t) tabndx1;
tabndx1frac = tabndx1 - tabndx1int;
tabndx1int %= p->numOfTabs;
index = p->xindex;
/*--------------*/
tabndx2 = *p->xtabndx2;
tabndx2int = (int32_t) tabndx2;
tabndx2frac = tabndx2 - tabndx2int;
tabndx2int %= p->numOfTabs;
interpoint = *p->xinterpoint;
interpoint -= (int32_t) interpoint; /* to limit to zero to 1 range */
if (UNLIKELY(offset)) memset(out, '\0', offset*sizeof(MYFLT));
if (UNLIKELY(early)) {
nsmps -= early;
memset(&out[nsmps], '\0', early*sizeof(MYFLT));
}
for (n=offset; n<nsmps; n++) {
MYFLT index_frac, tab1val1a,tab1val2a, tab2val1a, tab2val2a, val1, val2;
MYFLT val1a, val2a, val1b, val2b, tab1val1b,tab1val2b, tab2val1b, tab2val2b;
int64_t index_int;
MYFLT ndx = index[n] * tablen;
index_int = (int32_t) ndx;
index_frac = ndx - index_int;
index_int %= tablen;
tab1val1a = (p->table[tabndx1int ])[index_int];
tab1val2a = (p->table[tabndx1int+1])[index_int];
val1a = tab1val1a * (1-tabndx1frac) + tab1val2a * tabndx1frac;
tab1val1b = (p->table[tabndx1int ])[index_int+1];
tab1val2b = (p->table[tabndx1int+1])[index_int+1];
val1b = tab1val1b * (1-tabndx1frac) + tab1val2b * tabndx1frac;
val1 = val1a + (val1b-val1a) * index_frac;
tab2val1a = (p->table[tabndx2int ])[index_int];
tab2val2a = (p->table[tabndx2int+1])[index_int];
val2a = tab2val1a * (1-tabndx2frac) + tab2val2a * tabndx2frac;
tab2val1b = (p->table[tabndx2int ])[index_int+1];
tab2val2b = (p->table[tabndx2int+1])[index_int+1];
val2b = tab2val1b * (1-tabndx2frac) + tab2val2b * tabndx2frac;
val2 = val2a + (val2b-val2a) * index_frac;
out[n] = val1 * (1 - interpoint) + val2 * interpoint;
}
return OK;
}
#define S(x) sizeof(x)
OENTRY tabmoroph_localops[] = {
{ "tabmorph", S(TABMORPH), TR, 3, "k", "kkkkm",
(SUBR) tabmorph_set, (SUBR) tabmorph, NULL},
{ "tabmorphi", S(TABMORPH), TR, 3, "k", "kkkkm",
(SUBR) tabmorph_set, (SUBR) tabmorphi, NULL},
{ "tabmorpha", S(TABMORPH), TR, 3, "a", "aaaam",
(SUBR) tabmorph_set, (SUBR) atabmorphia},
{ "tabmorphak",S(TABMORPH), TR, 3, "a", "akkkm",
(SUBR) tabmorph_set, (SUBR) atabmorphi }
};
int32_t tabmorph_init_(CSOUND *csound) {
return
csound->AppendOpcodes(csound, &(tabmoroph_localops[0]),
(int32_t) (sizeof(tabmoroph_localops) / sizeof(OENTRY)));
}
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