/*  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((smpl_t)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_BLAS)  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_BLAS)  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}