ref: c9a9f8640bc74f286db859da8150d7c8e3b94d88
dir: /src/fmat.c/
/* 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 }