/*
- Copyright (C) 2003-20
09 Paul Brossier <piem@aubio.org>
+ Copyright (C) 2003-20
14 Paul Brossier <piem@aubio.org>
This file is part of aubio.
#include "musicutils.h"
#include "config.h"
-
/** Window types */
typedef enum
{
} aubio_window_type;
fvec_t *
-new_aubio_window (char_t * window_type, uint_t size)
+new_aubio_window (char_t * window_type, uint_t length)
{
- // create fvec of size x 1 channel
- fvec_t * win = new_fvec( size, 1);
- smpl_t * w = win->data[0];
- uint_t i;
+ fvec_t * win = new_fvec (length);
+ uint_t err;
+ if (win == NULL) {
+ return NULL;
+ }
+ err = fvec_set_window (win, window_type);
+ if (err != 0) {
+ del_fvec(win);
+ return NULL;
+ }
+ return win;
+}
+
+uint_t fvec_set_window (fvec_t *win, char_t *window_type) {
+ smpl_t * w = win->data;
+ uint_t i, size = win->length;
aubio_window_type wintype;
- if (strcmp (window_type, "rectangle") == 0)
+ if (window_type == NULL) {
+ AUBIO_ERR ("window type can not be null.\n");
+ return 1;
+ } else if (strcmp (window_type, "rectangle") == 0)
wintype = aubio_win_rectangle;
else if (strcmp (window_type, "hamming") == 0)
wintype = aubio_win_hamming;
else if (strcmp (window_type, "default") == 0)
wintype = aubio_win_default;
else {
- AUBIO_ERR ("unknown window type %s, using default.\n", window_type);
- wintype = aubio_win_default;
- return NULL;
+ AUBIO_ERR ("unknown window type `%s`.\n", window_type);
+ return 1;
}
switch(wintype) {
case aubio_win_rectangle:
- 0.01168 * COS(3.0*TWO_PI*i/(size-1.0));
break;
case aubio_win_gaussian:
- for (i=0;i<size;i++)
- w[i] = EXP(- 1.0 / SQR(size) * SQR(2.0*i-size));
+ {
+ lsmp_t a, b, c = 0.5;
+ uint_t n;
+ for (n = 0; n < size; n++)
+ {
+ a = (n-c*(size-1))/(SQR(c)*(size-1));
+ b = -c*SQR(a);
+ w[n] = EXP(b);
+ }
+ }
break;
case aubio_win_welch:
for (i=0;i<size;i++)
- w[i] = 1.0 - SQR((2*i-size)/(size+1.0));
+ w[i] = 1.0 - SQR((2.*i-size)/(size+1.0));
break;
case aubio_win_parzen:
for (i=0;i<size;i++)
- w[i] = 1.0 - ABS((2*i-size)/(size+1.0));
+ w[i] = 1.0 - ABS((2.f*i-size)/(size+1.0f));
break;
default:
break;
}
- return win;
+ return 0;
}
smpl_t
smpl_t
fvec_mean (fvec_t * s)
{
- uint_t i, j;
smpl_t tmp = 0.0;
- for (i = 0; i < s->channels; i++)
- for (j = 0; j < s->length; j++)
- tmp += s->data[i][j];
- return tmp / (smpl_t) (s->length);
-}
-
-smpl_t
-fvec_mean_channel (fvec_t * s, uint_t i)
-{
+#ifndef HAVE_ACCELERATE
uint_t j;
- smpl_t tmp = 0.0;
- for (j = 0; j < s->length; j++)
- tmp += s->data[i][j];
+ for (j = 0; j < s->length; j++) {
+ tmp += s->data[j];
+ }
return tmp / (smpl_t) (s->length);
+#else
+ aubio_vDSP_meanv(s->data, 1, &tmp, s->length);
+ return tmp;
+#endif /* HAVE_ACCELERATE */
}
smpl_t
fvec_sum (fvec_t * s)
{
- uint_t i, j;
smpl_t tmp = 0.0;
- for (i = 0; i < s->channels; i++) {
- for (j = 0; j < s->length; j++) {
- tmp += s->data[i][j];
- }
+#ifndef HAVE_ACCELERATE
+ uint_t j;
+ for (j = 0; j < s->length; j++) {
+ tmp += s->data[j];
}
+#else
+ aubio_vDSP_sve(s->data, 1, &tmp, s->length);
+#endif /* HAVE_ACCELERATE */
return tmp;
}
smpl_t
fvec_max (fvec_t * s)
{
- uint_t i, j;
+#ifndef HAVE_ACCELERATE
+ uint_t j;
smpl_t tmp = 0.0;
- for (i = 0; i < s->channels; i++) {
- for (j = 0; j < s->length; j++) {
- tmp = (tmp > s->data[i][j]) ? tmp : s->data[i][j];
- }
+ for (j = 0; j < s->length; j++) {
+ tmp = (tmp > s->data[j]) ? tmp : s->data[j];
}
+#else
+ smpl_t tmp = 0.;
+ aubio_vDSP_maxv(s->data, 1, &tmp, s->length);
+#endif
return tmp;
}
smpl_t
fvec_min (fvec_t * s)
{
- uint_t i, j;
- smpl_t tmp = s->data[0][0];
- for (i = 0; i < s->channels; i++) {
- for (j = 0; j < s->length; j++) {
- tmp = (tmp < s->data[i][j]) ? tmp : s->data[i][j];
- }
+#ifndef HAVE_ACCELERATE
+ uint_t j;
+ smpl_t tmp = s->data[0];
+ for (j = 0; j < s->length; j++) {
+ tmp = (tmp < s->data[j]) ? tmp : s->data[j];
}
+#else
+ smpl_t tmp = 0.;
+ aubio_vDSP_minv(s->data, 1, &tmp, s->length);
+#endif
return tmp;
}
uint_t
fvec_min_elem (fvec_t * s)
{
- uint_t i, j, pos = 0.;
- smpl_t tmp = s->data[0][0];
- for (i = 0; i < s->channels; i++) {
- for (j = 0; j < s->length; j++) {
- pos = (tmp < s->data[i][j]) ? pos : j;
- tmp = (tmp < s->data[i][j]) ? tmp : s->data[i][j];
- }
+#ifndef HAVE_ACCELERATE
+ uint_t j, pos = 0.;
+ smpl_t tmp = s->data[0];
+ for (j = 0; j < s->length; j++) {
+ pos = (tmp < s->data[j]) ? pos : j;
+ tmp = (tmp < s->data[j]) ? tmp : s->data[j];
}
+#else
+ smpl_t tmp = 0.;
+ uint_t pos = 0.;
+ aubio_vDSP_minvi(s->data, 1, &tmp, (vDSP_Length *)&pos, s->length);
+#endif
return pos;
}
uint_t
fvec_max_elem (fvec_t * s)
{
- uint_t i, j, pos = 0;
+#ifndef HAVE_ACCELERATE
+ uint_t j, pos = 0;
smpl_t tmp = 0.0;
- for (i = 0; i < s->channels; i++) {
- for (j = 0; j < s->length; j++) {
- pos = (tmp > s->data[i][j]) ? pos : j;
- tmp = (tmp > s->data[i][j]) ? tmp : s->data[i][j];
- }
+ for (j = 0; j < s->length; j++) {
+ pos = (tmp > s->data[j]) ? pos : j;
+ tmp = (tmp > s->data[j]) ? tmp : s->data[j];
}
+#else
+ smpl_t tmp = 0.;
+ uint_t pos = 0.;
+ aubio_vDSP_maxvi(s->data, 1, &tmp, (vDSP_Length *)&pos, s->length);
+#endif
return pos;
}
void
fvec_shift (fvec_t * s)
{
- uint_t i, j;
- for (i = 0; i < s->channels; i++) {
- for (j = 0; j < s->length / 2; j++) {
- ELEM_SWAP (s->data[i][j], s->data[i][j + s->length / 2]);
+ uint_t half = s->length / 2, start = half, j;
+ // if length is odd, middle element is moved to the end
+ if (2 * half < s->length) start ++;
+#ifndef HAVE_ATLAS
+ for (j = 0; j < half; j++) {
+ ELEM_SWAP (s->data[j], s->data[j + start]);
+ }
+#else
+ aubio_cblas_swap(half, s->data, 1, s->data + start, 1);
+#endif
+ if (start != half) {
+ for (j = 0; j < half; j++) {
+ ELEM_SWAP (s->data[j + start - 1], s->data[j + start]);
+ }
+ }
+}
+
+void
+fvec_ishift (fvec_t * s)
+{
+ uint_t half = s->length / 2, start = half, j;
+ // if length is odd, middle element is moved to the beginning
+ if (2 * half < s->length) start ++;
+#ifndef HAVE_ATLAS
+ for (j = 0; j < half; j++) {
+ ELEM_SWAP (s->data[j], s->data[j + start]);
+ }
+#else
+ aubio_cblas_swap(half, s->data, 1, s->data + start, 1);
+#endif
+ if (start != half) {
+ for (j = 0; j < half; j++) {
+ ELEM_SWAP (s->data[half], s->data[j]);
}
}
}
smpl_t
-fvec_local_energy (fvec_t * f)
+aubio_level_lin (const fvec_t * f)
{
smpl_t energy = 0.;
- uint_t i, j;
- for (i = 0; i < f->channels; i++) {
- for (j = 0; j < f->length; j++) {
- energy += SQR (f->data[i][j]);
- }
+#ifndef HAVE_ATLAS
+ uint_t j;
+ for (j = 0; j < f->length; j++) {
+ energy += SQR (f->data[j]);
}
- return energy;
+#else
+ energy = aubio_cblas_dot(f->length, f->data, 1, f->data, 1);
+#endif
+ return energy / f->length;
}
smpl_t
fvec_local_hfc (fvec_t * v)
{
smpl_t hfc = 0.;
- uint_t i, j;
- for (i = 0; i < v->channels; i++) {
- for (j = 0; j < v->length; j++) {
- hfc += (i + 1) * v->data[i][j];
- }
+ uint_t j;
+ for (j = 0; j < v->length; j++) {
+ hfc += (j + 1) * v->data[j];
}
return hfc;
}
smpl_t
fvec_alpha_norm (fvec_t * o, smpl_t alpha)
{
- uint_t i, j;
+ uint_t j;
smpl_t tmp = 0.;
- for (i = 0; i < o->channels; i++) {
- for (j = 0; j < o->length; j++) {
- tmp += POW (ABS (o->data[i][j]), alpha);
- }
+ for (j = 0; j < o->length; j++) {
+ tmp += POW (ABS (o->data[j]), alpha);
}
return POW (tmp / o->length, 1. / alpha);
}
void
fvec_alpha_normalise (fvec_t * o, smpl_t alpha)
{
- uint_t i, j;
+ uint_t j;
smpl_t norm = fvec_alpha_norm (o, alpha);
- for (i = 0; i < o->channels; i++) {
- for (j = 0; j < o->length; j++) {
- o->data[i][j] /= norm;
- }
+ for (j = 0; j < o->length; j++) {
+ o->data[j] /= norm;
}
}
void
fvec_add (fvec_t * o, smpl_t val)
{
- uint_t i, j;
- for (i = 0; i < o->channels; i++) {
- for (j = 0; j < o->length; j++) {
- o->data[i][j] += val;
- }
+ uint_t j;
+ for (j = 0; j < o->length; j++) {
+ o->data[j] += val;
}
}
void fvec_adapt_thres(fvec_t * vec, fvec_t * tmp,
- uint_t post, uint_t pre, uint_t channel) {
- uint_t length = vec->length, i=channel, j;
+ uint_t post, uint_t pre) {
+ uint_t length = vec->length, j;
for (j=0;j<length;j++) {
- vec->data[i][j] -= fvec_moving_thres(vec, tmp, post, pre, j, i);
+ vec->data[j] -= fvec_moving_thres(vec, tmp, post, pre, j);
}
}
smpl_t
fvec_moving_thres (fvec_t * vec, fvec_t * tmpvec,
- uint_t post, uint_t pre, uint_t pos, uint_t channel)
+ uint_t post, uint_t pre, uint_t pos)
{
- uint_t i = channel, k;
- smpl_t *medar = (smpl_t *) tmpvec->data[i];
+ uint_t k;
+ smpl_t *medar = (smpl_t *) tmpvec->data;
uint_t win_length = post + pre + 1;
uint_t length = vec->length;
/* post part of the buffer does not exist */
for (k = 0; k < post + 1 - pos; k++)
medar[k] = 0.; /* 0-padding at the beginning */
for (k = post + 1 - pos; k < win_length; k++)
- medar[k] = vec->data[0][k + pos - post];
+ medar[k] = vec->data[k + pos - post];
/* the buffer is fully defined */
} else if (pos + pre < length) {
for (k = 0; k < win_length; k++)
- medar[k] = vec->data[0][k + pos - post];
+ medar[k] = vec->data[k + pos - post];
/* pre part of the buffer does not exist */
} else {
for (k = 0; k < length - pos + post; k++)
- medar[k] = vec->data[0][k + pos - post];
+ medar[k] = vec->data[k + pos - post];
for (k = length - pos + post; k < win_length; k++)
medar[k] = 0.; /* 0-padding at the end */
}
- return fvec_median_channel (tmpvec, i);
+ return fvec_median (tmpvec);
}
-smpl_t fvec_median_channel (fvec_t * input, uint_t channel) {
+smpl_t fvec_median (fvec_t * input) {
uint_t n = input->length;
- smpl_t * arr = (smpl_t *) input->data[channel];
+ smpl_t * arr = (smpl_t *) input->data;
uint_t low, high ;
uint_t median;
uint_t middle, ll, hh;
}
}
-smpl_t fvec_quadint (fvec_t * x, uint_t pos, uint_t i) {
- smpl_t s0, s1, s2;
- uint_t x0 = (pos < 1) ? pos : pos - 1;
- uint_t x2 = (pos + 1 < x->length) ? pos + 1 : pos;
- if (x0 == pos) return (x->data[i][pos] <= x->data[i][x2]) ? pos : x2;
- if (x2 == pos) return (x->data[i][pos] <= x->data[i][x0]) ? pos : x0;
- s0 = x->data[i][x0];
- s1 = x->data[i][pos];
- s2 = x->data[i][x2];
- return pos + 0.5 * (s2 - s0 ) / (s2 - 2.* s1 + s0);
-}
-
-uint_t fvec_peakpick(fvec_t * onset, uint_t pos) {
- uint_t i=0, tmp=0;
- /*for (i=0;i<onset->channels;i++)*/
- tmp = (onset->data[i][pos] > onset->data[i][pos-1]
- && onset->data[i][pos] > onset->data[i][pos+1]
- && onset->data[i][pos] > 0.);
+smpl_t fvec_quadratic_peak_pos (const fvec_t * x, uint_t pos) {
+ smpl_t s0, s1, s2; uint_t x0, x2;
+ smpl_t half = .5, two = 2.;
+ if (pos == 0 || pos == x->length - 1) return pos;
+ x0 = (pos < 1) ? pos : pos - 1;
+ x2 = (pos + 1 < x->length) ? pos + 1 : pos;
+ if (x0 == pos) return (x->data[pos] <= x->data[x2]) ? pos : x2;
+ if (x2 == pos) return (x->data[pos] <= x->data[x0]) ? pos : x0;
+ s0 = x->data[x0];
+ s1 = x->data[pos];
+ s2 = x->data[x2];
+ return pos + half * (s0 - s2 ) / (s0 - two * s1 + s2);
+}
+
+smpl_t fvec_quadratic_peak_mag (fvec_t *x, smpl_t pos) {
+ smpl_t x0, x1, x2;
+ uint_t index = (uint_t)(pos - .5) + 1;
+ if (pos >= x->length || pos < 0.) return 0.;
+ if ((smpl_t)index == pos) return x->data[index];
+ x0 = x->data[index - 1];
+ x1 = x->data[index];
+ x2 = x->data[index + 1];
+ return x1 - .25 * (x0 - x2) * (pos - index);
+}
+
+uint_t fvec_peakpick(const fvec_t * onset, uint_t pos) {
+ uint_t tmp=0;
+ tmp = (onset->data[pos] > onset->data[pos-1]
+ && onset->data[pos] > onset->data[pos+1]
+ && onset->data[pos] > 0.);
return tmp;
}
smpl_t
aubio_freqtomidi (smpl_t freq)
{
+ smpl_t midi;
+ if (freq < 2. || freq > 100000.) return 0.; // avoid nans and infs
/* log(freq/A-2)/log(2) */
- smpl_t midi = freq / 6.875;
+ midi = freq / 6.875;
midi = LOG (midi) / 0.69314718055995;
midi *= 12;
midi -= 3;
smpl_t
aubio_miditofreq (smpl_t midi)
{
- smpl_t freq = (midi + 3.) / 12.;
+ smpl_t freq;
+ if (midi > 140.) return 0.; // avoid infs
+ freq = (midi + 3.) / 12.;
freq = EXP (freq * 0.69314718055995);
freq *= 6.875;
return freq;
aubio_bintofreq (smpl_t bin, smpl_t samplerate, smpl_t fftsize)
{
smpl_t freq = samplerate / fftsize;
- return freq * bin;
+ return freq * MAX(bin, 0);
}
smpl_t
aubio_freqtobin (smpl_t freq, smpl_t samplerate, smpl_t fftsize)
{
smpl_t bin = fftsize / samplerate;
- return freq * bin;
+ return MAX(freq, 0) * bin;
}
smpl_t
uint_t
aubio_next_power_of_two (uint_t a)
{
- uint_t i;
- a--;
- for (i = 0; i < sizeof (uint_t) * CHAR_BIT; i++) {
- a = a | a >> 1;
- }
- return a + 1;
+ uint_t i = 1;
+ while (i < a) i <<= 1;
+ return i;
}
smpl_t
-aubio_db_spl (fvec_t * o)
+aubio_db_spl (const fvec_t * o)
{
- smpl_t val = SQRT (fvec_local_energy (o));
- val /= (smpl_t) o->length;
- return LIN2DB (val);
+ return 10. * LOG10 (aubio_level_lin (o));
}
uint_t
-aubio_silence_detection (fvec_t * o, smpl_t threshold)
+aubio_silence_detection (const fvec_t * o, smpl_t threshold)
{
return (aubio_db_spl (o) < threshold);
}
smpl_t
-aubio_level_detection (fvec_t * o, smpl_t threshold)
+aubio_level_detection (const fvec_t * o, smpl_t threshold)
{
smpl_t db_spl = aubio_db_spl (o);
if (db_spl < threshold) {
smpl_t
aubio_zero_crossing_rate (fvec_t * input)
{
- uint_t i = 0, j;
+ uint_t j;
uint_t zcr = 0;
for (j = 1; j < input->length; j++) {
// previous was strictly negative
- if (input->data[i][j - 1] < 0.) {
+ if (input->data[j - 1] < 0.) {
// current is positive or null
- if (input->data[i][j] >= 0.) {
+ if (input->data[j] >= 0.) {
zcr += 1;
}
// previous was positive or null
} else {
// current is strictly negative
- if (input->data[i][j] < 0.) {
+ if (input->data[j] < 0.) {
zcr += 1;
}
}
}
void
-aubio_autocorr (fvec_t * input, fvec_t * output)
+aubio_autocorr (const fvec_t * input, fvec_t * output)
{
- uint_t i, j, k, length = input->length;
+ uint_t i, j, length = input->length;
smpl_t *data, *acf;
smpl_t tmp = 0;
- for (k = 0; k < input->channels; k++) {
- data = input->data[k];
- acf = output->data[k];
- for (i = 0; i < length; i++) {
- tmp = 0.;
- for (j = i; j < length; j++) {
- tmp += data[j - i] * data[j];
- }
- acf[i] = tmp / (smpl_t) (length - i);
+ data = input->data;
+ acf = output->data;
+ for (i = 0; i < length; i++) {
+ tmp = 0.;
+ for (j = i; j < length; j++) {
+ tmp += data[j - i] * data[j];
}
+ acf[i] = tmp / (smpl_t) (length - i);
}
}
void
aubio_cleanup (void)
{
-#if HAVE_FFTW3
- fftw_cleanup ();
-#else
-#if HAVE_FFTW3F
+#ifdef HAVE_FFTW3F
fftwf_cleanup ();
+#else
+#ifdef HAVE_FFTW3
+ fftw_cleanup ();
#endif
#endif
}
projects / aubio.git / blobdiff