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/*
Copyright (C) 2009 Paul Brossier <piem@aubio.org>
This file is part of aubio.
aubio is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
aubio 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with aubio. If not, see <http://www.gnu.org/licenses/>.
*/
#include "aubio_priv.h"
#include "fmat.h"
fmat_t * new_fmat (uint_t height, uint_t length) {
fmat_t * s;
uint_t i,j;
if ((sint_t)length <= 0 || (sint_t)height <= 0 ) {
return NULL;
}
s = AUBIO_NEW(fmat_t);
s->height = height;
s->length = length;
s->data = AUBIO_ARRAY(smpl_t*,s->height);
for (i=0; i< s->height; i++) {
s->data[i] = AUBIO_ARRAY(smpl_t, s->length);
for (j=0; j< s->length; j++) {
s->data[i][j]=0.;
}
}
return s;
}
void del_fmat (fmat_t *s) {
uint_t i;
for (i=0; i<s->height; i++) {
AUBIO_FREE(s->data[i]);
}
AUBIO_FREE(s->data);
AUBIO_FREE(s);
}
void fmat_set_sample(fmat_t *s, smpl_t data, uint_t channel, uint_t position) {
s->data[channel][position] = data;
}
smpl_t fmat_get_sample(const fmat_t *s, uint_t channel, uint_t position) {
return s->data[channel][position];
}
void fmat_get_channel(const fmat_t *s, uint_t channel, fvec_t *output) {
output->data = s->data[channel];
output->length = s->length;
return;
}
smpl_t * fmat_get_channel_data(const fmat_t *s, uint_t channel) {
return s->data[channel];
}
smpl_t ** fmat_get_data(const fmat_t *s) {
return s->data;
}
/* helper functions */
void fmat_print(const fmat_t *s) {
uint_t i,j;
for (i=0; i< s->height; i++) {
for (j=0; j< s->length; j++) {
AUBIO_MSG(AUBIO_SMPL_FMT " ", s->data[i][j]);
}
AUBIO_MSG("\n");
}
}
void fmat_set(fmat_t *s, smpl_t val) {
uint_t i,j;
for (i=0; i< s->height; i++) {
for (j=0; j< s->length; j++) {
s->data[i][j] = val;
}
}
}
void fmat_zeros(fmat_t *s) {
#ifdef HAVE_MEMCPY_HACKS
uint_t i;
for (i=0; i< s->height; i++) {
memset(s->data[i], 0, s->length * sizeof(smpl_t));
}
#else /* HAVE_MEMCPY_HACKS */
fmat_set(s, 0.);
#endif /* HAVE_MEMCPY_HACKS */
}
void fmat_ones(fmat_t *s) {
fmat_set(s, 1.);
}
void fmat_rev(fmat_t *s) {
uint_t i,j;
for (i=0; i< s->height; i++) {
for (j=0; j< FLOOR(s->length/2); j++) {
ELEM_SWAP(s->data[i][j], s->data[i][s->length-1-j]);
}
}
}
void fmat_weight(fmat_t *s, const fmat_t *weight) {
uint_t i,j;
uint_t length = MIN(s->length, weight->length);
for (i=0; i< s->height; i++) {
for (j=0; j< length; j++) {
s->data[i][j] *= weight->data[0][j];
}
}
}
void fmat_copy(const fmat_t *s, fmat_t *t) {
uint_t i;
#ifndef HAVE_MEMCPY_HACKS
uint_t j;
#endif /* HAVE_MEMCPY_HACKS */
if (s->height != t->height) {
AUBIO_ERR("trying to copy %d rows to %d rows \n",
s->height, t->height);
return;
}
if (s->length != t->length) {
AUBIO_ERR("trying to copy %d columns to %d columns\n",
s->length, t->length);
return;
}
#ifdef HAVE_MEMCPY_HACKS
for (i=0; i< s->height; i++) {
memcpy(t->data[i], s->data[i], t->length * sizeof(smpl_t));
}
#else /* HAVE_MEMCPY_HACKS */
for (i=0; i< t->height; i++) {
for (j=0; j< t->length; j++) {
t->data[i][j] = s->data[i][j];
}
}
#endif /* HAVE_MEMCPY_HACKS */
}
void fmat_vecmul(const fmat_t *s, const fvec_t *scale, fvec_t *output) {
uint_t k;
#if 0
assert(s->height == output->length);
assert(s->length == scale->length);
#endif
#if !defined(HAVE_ACCELERATE) && !defined(HAVE_ATLAS)
uint_t j;
fvec_zeros(output);
for (j = 0; j < s->length; j++) {
for (k = 0; k < s->height; k++) {
output->data[k] += scale->data[j]
* s->data[k][j];
}
}
#elif defined(HAVE_ATLAS)
for (k = 0; k < s->height; k++) {
output->data[k] = aubio_cblas_dot( s->length, scale->data, 1, s->data[k], 1);
}
#elif defined(HAVE_ACCELERATE)
#if 0
// seems slower and less precise (and dangerous?)
vDSP_mmul (s->data[0], 1, scale->data, 1, output->data, 1, s->height, 1, s->length);
#else
for (k = 0; k < s->height; k++) {
aubio_vDSP_dotpr( scale->data, 1, s->data[k], 1, &(output->data[k]), s->length);
}
#endif
#endif
}
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