1 | /* |
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2 | Copyright (C) 2012 Paul Brossier <piem@aubio.org> |
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3 | |
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4 | This file is part of aubio. |
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5 | |
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6 | aubio is free software: you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation, either version 3 of the License, or |
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9 | (at your option) any later version. |
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10 | |
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11 | aubio is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |
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16 | You should have received a copy of the GNU General Public License |
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17 | along with aubio. If not, see <http://www.gnu.org/licenses/>. |
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18 | |
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19 | */ |
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20 | |
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21 | |
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22 | #include "config.h" |
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23 | |
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24 | #ifdef HAVE_SNDFILE |
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25 | |
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26 | #include <sndfile.h> |
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27 | |
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28 | #include "aubio_priv.h" |
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29 | #include "sink_sndfile.h" |
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30 | #include "fvec.h" |
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31 | |
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32 | #define MAX_CHANNELS 6 |
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33 | #define MAX_SIZE 4096 |
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34 | |
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35 | struct _aubio_sink_sndfile_t { |
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36 | uint_t hop_size; |
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37 | uint_t samplerate; |
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38 | uint_t channels; |
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39 | char_t *path; |
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40 | SNDFILE *handle; |
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41 | uint_t scratch_size; |
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42 | smpl_t *scratch_data; |
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43 | }; |
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44 | |
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45 | aubio_sink_sndfile_t * new_aubio_sink_sndfile(char_t * path, uint_t samplerate, uint_t hop_size) { |
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46 | aubio_sink_sndfile_t * s = AUBIO_NEW(aubio_sink_sndfile_t); |
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47 | |
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48 | if (path == NULL) { |
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49 | AUBIO_ERR("Aborted opening null path\n"); |
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50 | return NULL; |
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51 | } |
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52 | |
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53 | s->hop_size = hop_size; |
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54 | s->samplerate = samplerate; |
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55 | s->channels = 1; |
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56 | s->path = path; |
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57 | |
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58 | /* set output format */ |
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59 | SF_INFO sfinfo; |
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60 | AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo)); |
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61 | sfinfo.samplerate = s->samplerate; |
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62 | sfinfo.channels = s->channels; |
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63 | sfinfo.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16; |
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64 | |
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65 | /* try creating the file */ |
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66 | s->handle = sf_open (s->path, SFM_WRITE, &sfinfo); |
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67 | |
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68 | if (s->handle == NULL) { |
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69 | /* show libsndfile err msg */ |
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70 | AUBIO_ERR("Failed opening %s. %s\n", s->path, sf_strerror (NULL)); |
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71 | return NULL; |
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72 | } |
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73 | |
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74 | s->scratch_size = s->hop_size*s->channels; |
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75 | /* allocate data for de/interleaving reallocated when needed. */ |
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76 | if (s->scratch_size >= MAX_SIZE * MAX_CHANNELS) { |
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77 | AUBIO_ERR("%d x %d exceeds maximum aubio_sink_sndfile buffer size %d\n", |
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78 | s->hop_size, s->channels, MAX_CHANNELS * MAX_CHANNELS); |
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79 | return NULL; |
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80 | } |
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81 | s->scratch_data = AUBIO_ARRAY(float,s->scratch_size); |
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82 | |
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83 | return s; |
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84 | } |
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85 | |
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86 | void aubio_sink_sndfile_do(aubio_sink_sndfile_t *s, fvec_t * write, uint_t * written){ |
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87 | sf_count_t written_frames = 0; |
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88 | int i, j, channels = s->channels; |
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89 | int nsamples = channels*(*written); |
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90 | smpl_t *pwrite; |
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91 | |
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92 | /* interleaving data */ |
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93 | for ( i = 0; i < channels; i++) { |
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94 | pwrite = (smpl_t *)write->data; |
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95 | for (j=0; j < s->hop_size; j++) { |
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96 | s->scratch_data[channels*j+i] = pwrite[j]; |
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97 | } |
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98 | } |
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99 | written_frames = sf_write_float (s->handle, s->scratch_data, nsamples); |
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100 | *written = written_frames/channels; |
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101 | return; |
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102 | } |
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103 | |
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104 | void del_aubio_sink_sndfile(aubio_sink_sndfile_t * s){ |
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105 | if (!s) return; |
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106 | if (sf_close(s->handle)) { |
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107 | AUBIO_ERR("Error closing file %s: %s", s->path, sf_strerror (NULL)); |
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108 | } |
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109 | AUBIO_FREE(s->scratch_data); |
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110 | AUBIO_FREE(s); |
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111 | } |
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112 | |
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113 | #endif /* HAVE_SNDFILE */ |
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