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
59 uint_t input_hop_size;
60 #ifdef HAVE_SAMPLERATE
61 aubio_resampler_t *resampler;
63 #endif /* HAVE_SAMPLERATE */
65 // some temporary memory for sndfile to write at
70 aubio_source_sndfile_t * new_aubio_source_sndfile(const char_t * path, uint_t samplerate, uint_t hop_size) {
71 aubio_source_sndfile_t * s = AUBIO_NEW(aubio_source_sndfile_t);
75 AUBIO_ERR("source_sndfile: Aborted opening null path\n");
78 if ((sint_t)samplerate < 0) {
79 AUBIO_ERR("source_sndfile: Can not open %s with samplerate %d\n", path, samplerate);
82 if ((sint_t)hop_size <= 0) {
83 AUBIO_ERR("source_sndfile: Can not open %s with hop_size %d\n", path, hop_size);
87 s->hop_size = hop_size;
90 if (s->path) AUBIO_FREE(s->path);
91 s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX));
92 strncpy(s->path, path, strnlen(path, PATH_MAX));
94 // try opening the file, getting the info in sfinfo
95 AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
96 s->handle = sf_open (s->path, SFM_READ, &sfinfo);
98 if (s->handle == NULL) {
99 /* show libsndfile err msg */
100 AUBIO_ERR("source_sndfile: Failed opening %s: %s\n", s->path, sf_strerror (NULL));
104 /* get input specs */
105 s->input_samplerate = sfinfo.samplerate;
106 s->input_channels = sfinfo.channels;
107 s->input_format = sfinfo.format;
109 if (samplerate == 0) {
110 s->samplerate = s->input_samplerate;
111 //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
113 s->samplerate = samplerate;
115 /* compute input block size required before resampling */
116 s->ratio = s->samplerate/(smpl_t)s->input_samplerate;
117 s->input_hop_size = (uint_t)FLOOR(s->hop_size / s->ratio + .5);
119 if (s->input_hop_size * s->input_channels > MAX_SAMPLES) {
120 AUBIO_ERR("source_sndfile: Not able to process more than %d frames of %d channels\n",
121 MAX_SAMPLES / s->input_channels, s->input_channels);
125 #ifdef HAVE_SAMPLERATE
127 s->input_data = NULL;
129 s->input_data = new_fvec(s->input_hop_size);
130 s->resampler = new_aubio_resampler(s->ratio, 4);
132 // we would need to add a ring buffer for these
133 if ( (uint_t)(s->input_hop_size * s->ratio + .5) != s->hop_size ) {
134 AUBIO_ERR("source_sndfile: can not upsample %s from %d to %d\n", s->path,
135 s->input_samplerate, s->samplerate);
138 AUBIO_WRN("source_sndfile: upsampling %s from %d to %d\n", s->path,
139 s->input_samplerate, s->samplerate);
144 AUBIO_ERR("source_sndfile: aubio was compiled without aubio_resampler\n");
147 #endif /* HAVE_SAMPLERATE */
149 /* allocate data for de/interleaving reallocated when needed. */
150 s->scratch_size = s->input_hop_size * s->input_channels;
151 s->scratch_data = AUBIO_ARRAY(smpl_t, s->scratch_size);
156 //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
157 // s->path, s->samplerate, s->hop_size);
158 del_aubio_source_sndfile(s);
162 void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){
163 uint_t i,j, input_channels = s->input_channels;
164 /* read from file into scratch_data */
165 sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
167 /* where to store de-interleaved data */
169 #ifdef HAVE_SAMPLERATE
171 ptr_data = s->input_data->data;
173 #endif /* HAVE_SAMPLERATE */
175 ptr_data = read_data->data;
178 /* de-interleaving and down-mixing data */
179 for (j = 0; j < read_samples / input_channels; j++) {
181 for (i = 0; i < input_channels; i++) {
182 ptr_data[j] += s->scratch_data[input_channels*j+i];
184 ptr_data[j] /= (smpl_t)input_channels;
187 #ifdef HAVE_SAMPLERATE
189 aubio_resampler_do(s->resampler, s->input_data, read_data);
191 #endif /* HAVE_SAMPLERATE */
193 *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
195 if (*read < s->hop_size) {
196 for (j = *read; j < s->hop_size; j++) {
197 read_data->data[j] = 0;
203 void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_data, uint_t * read){
204 uint_t i,j, input_channels = s->input_channels;
205 /* do actual reading */
206 sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
208 /* where to store de-interleaved data */
210 #ifdef HAVE_SAMPLERATE
212 AUBIO_ERR("source_sndfile: no multi channel resampling yet\n");
214 //ptr_data = s->input_data->data;
216 #endif /* HAVE_SAMPLERATE */
218 ptr_data = read_data->data;
221 if (read_data->height < input_channels) {
222 // destination matrix has less channels than the file; copy only first
223 // channels of the file, de-interleaving data
224 for (j = 0; j < read_samples / input_channels; j++) {
225 for (i = 0; i < read_data->height; i++) {
226 ptr_data[i][j] = s->scratch_data[j * input_channels + i];
230 // destination matrix has as many or more channels than the file; copy each
231 // channel from the file to the destination matrix, de-interleaving data
232 for (j = 0; j < read_samples / input_channels; j++) {
233 for (i = 0; i < input_channels; i++) {
234 ptr_data[i][j] = s->scratch_data[j * input_channels + i];
239 if (read_data->height > input_channels) {
240 // destination matrix has more channels than the file; copy last channel
241 // of the file to each additional channels, de-interleaving data
242 for (j = 0; j < read_samples / input_channels; j++) {
243 for (i = input_channels; i < read_data->height; i++) {
244 ptr_data[i][j] = s->scratch_data[j * input_channels + (input_channels - 1)];
249 #ifdef HAVE_SAMPLERATE
251 //aubio_resampler_do(s->resampler, s->input_data, read_data);
253 #endif /* HAVE_SAMPLERATE */
255 *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
257 if (*read < s->hop_size) {
258 for (i = 0; i < read_data->height; i++) {
259 for (j = *read; j < s->hop_size; j++) {
260 read_data->data[i][j] = 0.;
267 uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s) {
268 return s->samplerate;
271 uint_t aubio_source_sndfile_get_channels(aubio_source_sndfile_t * s) {
272 return s->input_channels;
275 uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t * s, uint_t pos) {
276 uint_t resampled_pos = (uint_t)ROUND(pos / s->ratio);
277 sf_count_t sf_ret = sf_seek (s->handle, resampled_pos, SEEK_SET);
279 AUBIO_ERR("source_sndfile: Failed seeking %s at %d: %s\n", s->path, pos, sf_strerror (NULL));
282 if (sf_ret != resampled_pos) {
283 AUBIO_ERR("source_sndfile: Tried seeking %s at %d, but got %d: %s\n",
284 s->path, resampled_pos, (uint_t)sf_ret, sf_strerror (NULL));
290 uint_t aubio_source_sndfile_close (aubio_source_sndfile_t *s) {
294 if(sf_close(s->handle)) {
295 AUBIO_ERR("source_sndfile: Error closing file %s: %s\n", s->path, sf_strerror (NULL));
301 void del_aubio_source_sndfile(aubio_source_sndfile_t * s){
303 aubio_source_sndfile_close(s);
304 #ifdef HAVE_SAMPLERATE
305 if (s->resampler != NULL) {
306 del_aubio_resampler(s->resampler);
309 del_fvec(s->input_data);
311 #endif /* HAVE_SAMPLERATE */
312 if (s->path) AUBIO_FREE(s->path);
313 AUBIO_FREE(s->scratch_data);
317 #endif /* HAVE_SNDFILE */