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 *resampler;
64 #endif /* HAVE_SAMPLERATE */
66 // some temporary memory for sndfile to write at
71 aubio_source_sndfile_t * new_aubio_source_sndfile(const char_t * path, uint_t samplerate, uint_t hop_size) {
72 aubio_source_sndfile_t * s = AUBIO_NEW(aubio_source_sndfile_t);
76 AUBIO_ERR("source_sndfile: Aborted opening null path\n");
79 if ((sint_t)samplerate < 0) {
80 AUBIO_ERR("source_sndfile: Can not open %s with samplerate %d\n", path, samplerate);
83 if ((sint_t)hop_size <= 0) {
84 AUBIO_ERR("source_sndfile: Can not open %s with hop_size %d\n", path, hop_size);
88 s->hop_size = hop_size;
91 if (s->path) AUBIO_FREE(s->path);
92 s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
93 strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
95 // try opening the file, getting the info in sfinfo
96 AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
97 s->handle = sf_open (s->path, SFM_READ, &sfinfo);
99 if (s->handle == NULL) {
100 /* show libsndfile err msg */
101 AUBIO_ERR("source_sndfile: Failed opening %s: %s\n", s->path, sf_strerror (NULL));
105 /* get input specs */
106 s->input_samplerate = sfinfo.samplerate;
107 s->input_channels = sfinfo.channels;
108 s->input_format = sfinfo.format;
109 s->duration = sfinfo.frames;
111 if (samplerate == 0) {
112 s->samplerate = s->input_samplerate;
113 //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
115 s->samplerate = samplerate;
117 /* compute input block size required before resampling */
118 s->ratio = s->samplerate/(smpl_t)s->input_samplerate;
119 s->input_hop_size = (uint_t)FLOOR(s->hop_size / s->ratio + .5);
121 if (s->input_hop_size * s->input_channels > MAX_SAMPLES) {
122 AUBIO_ERR("source_sndfile: Not able to process more than %d frames of %d channels\n",
123 MAX_SAMPLES / s->input_channels, s->input_channels);
127 #ifdef HAVE_SAMPLERATE
129 s->input_data = NULL;
131 s->input_data = new_fvec(s->input_hop_size);
132 s->resampler = new_aubio_resampler(s->ratio, 4);
134 // we would need to add a ring buffer for these
135 if ( (uint_t)(s->input_hop_size * s->ratio + .5) != s->hop_size ) {
136 AUBIO_ERR("source_sndfile: can not upsample %s from %d to %d\n", s->path,
137 s->input_samplerate, s->samplerate);
140 AUBIO_WRN("source_sndfile: upsampling %s from %d to %d\n", s->path,
141 s->input_samplerate, s->samplerate);
143 s->duration = (uint_t)FLOOR(s->duration * s->ratio);
147 AUBIO_ERR("source_sndfile: aubio was compiled without aubio_resampler\n");
150 #endif /* HAVE_SAMPLERATE */
152 /* allocate data for de/interleaving reallocated when needed. */
153 s->scratch_size = s->input_hop_size * s->input_channels;
154 s->scratch_data = AUBIO_ARRAY(smpl_t, s->scratch_size);
159 //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",
160 // s->path, s->samplerate, s->hop_size);
161 del_aubio_source_sndfile(s);
165 void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){
166 uint_t i,j, input_channels = s->input_channels;
167 /* read from file into scratch_data */
168 sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
170 /* where to store de-interleaved data */
172 #ifdef HAVE_SAMPLERATE
174 ptr_data = s->input_data->data;
176 #endif /* HAVE_SAMPLERATE */
178 ptr_data = read_data->data;
181 /* de-interleaving and down-mixing data */
182 for (j = 0; j < read_samples / input_channels; j++) {
184 for (i = 0; i < input_channels; i++) {
185 ptr_data[j] += s->scratch_data[input_channels*j+i];
187 ptr_data[j] /= (smpl_t)input_channels;
190 #ifdef HAVE_SAMPLERATE
192 aubio_resampler_do(s->resampler, s->input_data, read_data);
194 #endif /* HAVE_SAMPLERATE */
196 *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
198 if (*read < s->hop_size) {
199 for (j = *read; j < s->hop_size; j++) {
200 read_data->data[j] = 0;
206 void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_data, uint_t * read){
207 uint_t i,j, input_channels = s->input_channels;
208 /* do actual reading */
209 sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data, s->scratch_size);
211 /* where to store de-interleaved data */
213 #ifdef HAVE_SAMPLERATE
215 AUBIO_ERR("source_sndfile: no multi channel resampling yet\n");
217 //ptr_data = s->input_data->data;
219 #endif /* HAVE_SAMPLERATE */
221 ptr_data = read_data->data;
224 if (read_data->height < input_channels) {
225 // destination matrix has less channels than the file; copy only first
226 // channels of the file, de-interleaving data
227 for (j = 0; j < read_samples / input_channels; j++) {
228 for (i = 0; i < read_data->height; i++) {
229 ptr_data[i][j] = s->scratch_data[j * input_channels + i];
233 // destination matrix has as many or more channels than the file; copy each
234 // channel from the file to the destination matrix, de-interleaving data
235 for (j = 0; j < read_samples / input_channels; j++) {
236 for (i = 0; i < input_channels; i++) {
237 ptr_data[i][j] = s->scratch_data[j * input_channels + i];
242 if (read_data->height > input_channels) {
243 // destination matrix has more channels than the file; copy last channel
244 // of the file to each additional channels, de-interleaving data
245 for (j = 0; j < read_samples / input_channels; j++) {
246 for (i = input_channels; i < read_data->height; i++) {
247 ptr_data[i][j] = s->scratch_data[j * input_channels + (input_channels - 1)];
252 #ifdef HAVE_SAMPLERATE
254 //aubio_resampler_do(s->resampler, s->input_data, read_data);
256 #endif /* HAVE_SAMPLERATE */
258 *read = (int)FLOOR(s->ratio * read_samples / input_channels + .5);
260 if (*read < s->hop_size) {
261 for (i = 0; i < read_data->height; i++) {
262 for (j = *read; j < s->hop_size; j++) {
263 read_data->data[i][j] = 0.;
270 uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s) {
271 return s->samplerate;
274 uint_t aubio_source_sndfile_get_channels(aubio_source_sndfile_t * s) {
275 return s->input_channels;
278 uint_t aubio_source_sndfile_get_duration (const aubio_source_sndfile_t * s) {
279 if (s && s->duration) {
285 uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t * s, uint_t pos) {
286 uint_t resampled_pos = (uint_t)ROUND(pos / s->ratio);
287 sf_count_t sf_ret = sf_seek (s->handle, resampled_pos, SEEK_SET);
289 AUBIO_ERR("source_sndfile: Failed seeking %s at %d: %s\n", s->path, pos, sf_strerror (NULL));
292 if (sf_ret != resampled_pos) {
293 AUBIO_ERR("source_sndfile: Tried seeking %s at %d, but got %d: %s\n",
294 s->path, resampled_pos, (uint_t)sf_ret, sf_strerror (NULL));
300 uint_t aubio_source_sndfile_close (aubio_source_sndfile_t *s) {
304 if(sf_close(s->handle)) {
305 AUBIO_ERR("source_sndfile: Error closing file %s: %s\n", s->path, sf_strerror (NULL));
311 void del_aubio_source_sndfile(aubio_source_sndfile_t * s){
313 aubio_source_sndfile_close(s);
314 #ifdef HAVE_SAMPLERATE
315 if (s->resampler != NULL) {
316 del_aubio_resampler(s->resampler);
319 del_fvec(s->input_data);
321 #endif /* HAVE_SAMPLERATE */
322 if (s->path) AUBIO_FREE(s->path);
323 AUBIO_FREE(s->scratch_data);
327 #endif /* HAVE_SNDFILE */