2 Copyright (C) 2012 Paul Brossier <piem@aubio.org>
4 This file is part of aubio.
6 aubio is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 aubio is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with aubio. If not, see <http://www.gnu.org/licenses/>.
28 #include "aubio_priv.h"
31 #include "source_sndfile.h"
33 #include "temporal/resampler.h"
35 #define MAX_CHANNELS 6
37 #define MAX_SAMPLES MAX_CHANNELS * MAX_SIZE
39 #if !HAVE_AUBIO_DOUBLE
40 #define aubio_sf_read_smpl sf_read_float
41 #else /* HAVE_AUBIO_DOUBLE */
42 #define aubio_sf_read_smpl sf_read_double
43 #endif /* HAVE_AUBIO_DOUBLE */
45 struct _aubio_source_sndfile_t {
50 // some data about the file
60 uint_t input_hop_size;
61 #ifdef HAVE_SAMPLERATE
62 aubio_resampler_t **resamplers;
65 #endif /* HAVE_SAMPLERATE */
67 // some temporary memory for sndfile to write at
72 aubio_source_sndfile_t * new_aubio_source_sndfile(const char_t * path, uint_t samplerate, uint_t hop_size) {
73 aubio_source_sndfile_t * s = AUBIO_NEW(aubio_source_sndfile_t);
77 AUBIO_ERR("source_sndfile: Aborted opening null path\n");
80 if ((sint_t)samplerate < 0) {
81 AUBIO_ERR("source_sndfile: Can not open %s with samplerate %d\n", path, samplerate);
84 if ((sint_t)hop_size <= 0) {
85 AUBIO_ERR("source_sndfile: Can not open %s with hop_size %d\n", path, hop_size);
89 s->hop_size = hop_size;
92 if (s->path) AUBIO_FREE(s->path);
93 s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
94 strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
96 // try opening the file, getting the info in sfinfo
97 AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
98 s->handle = sf_open (s->path, SFM_READ, &sfinfo);
100 if (s->handle == NULL) {
101 /* show libsndfile err msg */
102 AUBIO_ERR("source_sndfile: Failed opening %s (%s)\n", s->path,
107 /* get input specs */
108 s->input_samplerate = sfinfo.samplerate;
109 s->input_channels = sfinfo.channels;
110 s->input_format = sfinfo.format;
111 s->duration = sfinfo.frames;
113 if (samplerate == 0) {
114 s->samplerate = s->input_samplerate;
115 //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
117 s->samplerate = samplerate;
119 /* compute input block size required before resampling */
120 s->ratio = s->samplerate/(smpl_t)s->input_samplerate;
121 s->input_hop_size = (uint_t)FLOOR(s->hop_size / s->ratio + .5);
123 if (s->input_hop_size * s->input_channels > MAX_SAMPLES) {
124 AUBIO_ERR("source_sndfile: Not able to process more than %d frames of %d channels\n",
125 MAX_SAMPLES / s->input_channels, s->input_channels);
129 #ifdef HAVE_SAMPLERATE
130 s->input_data = NULL;
132 s->resamplers = NULL;
135 s->resamplers = AUBIO_ARRAY(aubio_resampler_t*, s->input_channels);
136 s->input_data = new_fvec(s->input_hop_size);
137 s->input_mat = new_fmat(s->input_channels, s->input_hop_size);
138 for (i = 0; i < (uint_t)s->input_channels; i++) {
139 s->resamplers[i] = new_aubio_resampler(s->ratio, 4);
142 // we would need to add a ring buffer for these
143 if ( (uint_t)FLOOR(s->input_hop_size * s->ratio + .5) != s->hop_size ) {
144 AUBIO_ERR("source_sndfile: can not upsample %s from %d to %d\n", s->path,
145 s->input_samplerate, s->samplerate);
148 AUBIO_WRN("source_sndfile: upsampling %s from %d to %d\n", s->path,
149 s->input_samplerate, s->samplerate);
151 s->duration = (uint_t)FLOOR(s->duration * s->ratio);
155 AUBIO_ERR("source_sndfile: aubio was compiled without aubio_resampler\n");
158 #endif /* HAVE_SAMPLERATE */
160 /* allocate data for de/interleaving reallocated when needed. */
161 s->scratch_size = s->input_hop_size * s->input_channels;
162 s->scratch_data = AUBIO_ARRAY(smpl_t, s->scratch_size);
167 //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
168 // s->path, s->samplerate, s->hop_size);
169 del_aubio_source_sndfile(s);
173 void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){
174 uint_t i,j, input_channels = s->input_channels;
175 /* read from file into scratch_data */
176 sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
178 /* where to store de-interleaved data */
180 #ifdef HAVE_SAMPLERATE
182 ptr_data = s->input_data->data;
184 #endif /* HAVE_SAMPLERATE */
186 ptr_data = read_data->data;
189 /* de-interleaving and down-mixing data */
190 for (j = 0; j < read_samples / input_channels; j++) {
192 for (i = 0; i < input_channels; i++) {
193 ptr_data[j] += s->scratch_data[input_channels*j+i];
195 ptr_data[j] /= (smpl_t)input_channels;
198 #ifdef HAVE_SAMPLERATE
200 aubio_resampler_do(s->resamplers[0], s->input_data, read_data);
202 #endif /* HAVE_SAMPLERATE */
204 *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
206 if (*read < s->hop_size) {
207 for (j = *read; j < s->hop_size; j++) {
208 read_data->data[j] = 0;
214 void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_data, uint_t * read){
215 uint_t i,j, input_channels = s->input_channels;
216 /* do actual reading */
217 sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
219 /* where to store de-interleaved data */
221 #ifdef HAVE_SAMPLERATE
223 ptr_data = s->input_mat->data;
225 #endif /* HAVE_SAMPLERATE */
227 ptr_data = read_data->data;
230 if (read_data->height < input_channels) {
231 // destination matrix has less channels than the file; copy only first
232 // channels of the file, de-interleaving data
233 for (j = 0; j < read_samples / input_channels; j++) {
234 for (i = 0; i < read_data->height; i++) {
235 ptr_data[i][j] = s->scratch_data[j * input_channels + i];
239 // destination matrix has as many or more channels than the file; copy each
240 // channel from the file to the destination matrix, de-interleaving data
241 for (j = 0; j < read_samples / input_channels; j++) {
242 for (i = 0; i < input_channels; i++) {
243 ptr_data[i][j] = s->scratch_data[j * input_channels + i];
248 if (read_data->height > input_channels) {
249 // destination matrix has more channels than the file; copy last channel
250 // of the file to each additional channels, de-interleaving data
251 for (j = 0; j < read_samples / input_channels; j++) {
252 for (i = input_channels; i < read_data->height; i++) {
253 ptr_data[i][j] = s->scratch_data[j * input_channels + (input_channels - 1)];
258 #ifdef HAVE_SAMPLERATE
260 for (i = 0; i < input_channels; i++) {
261 fvec_t input_chan, read_chan;
262 input_chan.data = s->input_mat->data[i];
263 input_chan.length = s->input_mat->length;
264 read_chan.data = read_data->data[i];
265 read_chan.length = read_data->length;
266 aubio_resampler_do(s->resamplers[i], &input_chan, &read_chan);
269 #endif /* HAVE_SAMPLERATE */
271 *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
273 if (*read < s->hop_size) {
274 for (i = 0; i < read_data->height; i++) {
275 for (j = *read; j < s->hop_size; j++) {
276 read_data->data[i][j] = 0.;
283 uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s) {
284 return s->samplerate;
287 uint_t aubio_source_sndfile_get_channels(aubio_source_sndfile_t * s) {
288 return s->input_channels;
291 uint_t aubio_source_sndfile_get_duration (const aubio_source_sndfile_t * s) {
292 if (s && s->duration) {
298 uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t * s, uint_t pos) {
299 uint_t resampled_pos = (uint_t)ROUND(pos / s->ratio);
300 sf_count_t sf_ret = sf_seek (s->handle, resampled_pos, SEEK_SET);
302 AUBIO_ERR("source_sndfile: Failed seeking %s at %d: %s\n", s->path, pos, sf_strerror (NULL));
305 if (sf_ret != resampled_pos) {
306 AUBIO_ERR("source_sndfile: Tried seeking %s at %d, but got %d: %s\n",
307 s->path, resampled_pos, (uint_t)sf_ret, sf_strerror (NULL));
313 uint_t aubio_source_sndfile_close (aubio_source_sndfile_t *s) {
317 if(sf_close(s->handle)) {
318 AUBIO_ERR("source_sndfile: Error closing file %s: %s\n", s->path, sf_strerror (NULL));
325 void del_aubio_source_sndfile(aubio_source_sndfile_t * s){
327 aubio_source_sndfile_close(s);
328 #ifdef HAVE_SAMPLERATE
329 if (s->resamplers != NULL) {
330 uint_t i = 0, input_channels = s->input_channels;
331 for (i = 0; i < input_channels; i ++) {
332 if (s->resamplers[i] != NULL) {
333 del_aubio_resampler(s->resamplers[i]);
336 AUBIO_FREE(s->resamplers);
339 del_fvec(s->input_data);
342 del_fmat(s->input_mat);
344 #endif /* HAVE_SAMPLERATE */
345 if (s->path) AUBIO_FREE(s->path);
346 AUBIO_FREE(s->scratch_data);
350 #endif /* HAVE_SNDFILE */