[c41637b] | 1 | /* |
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| 2 | Copyright (C) 2016 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 | #include "config.h" |
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| 22 | |
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| 23 | #ifdef HAVE_RUBBERBAND |
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| 24 | |
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| 25 | #include "aubio_priv.h" |
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| 26 | #include "fvec.h" |
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| 27 | #include "fmat.h" |
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| 28 | #include "io/source.h" |
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| 29 | #include "effects/timestretch.h" |
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| 30 | |
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| 31 | #include "rubberband/rubberband-c.h" |
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| 32 | |
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| 33 | #define MIN_STRETCH_RATIO 0.025 |
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[85755eb] | 34 | #define MAX_STRETCH_RATIO 40. |
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[c41637b] | 35 | |
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[8856791] | 36 | #define HAVE_THREADS 1 |
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| 37 | #if 0 |
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| 38 | #undef HAVE_THREADS |
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| 39 | #endif |
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| 40 | |
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| 41 | #ifdef HAVE_THREADS |
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| 42 | #include <pthread.h> |
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| 43 | #endif |
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| 44 | |
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[c41637b] | 45 | /** generic time stretching structure */ |
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| 46 | struct _aubio_timestretch_t |
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| 47 | { |
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| 48 | uint_t samplerate; /**< samplerate */ |
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| 49 | uint_t hopsize; /**< hop size */ |
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| 50 | smpl_t stretchratio; /**< time ratio */ |
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| 51 | smpl_t pitchscale; /**< pitch scale */ |
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| 52 | |
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| 53 | aubio_source_t *source; |
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[992ac88] | 54 | uint_t source_hopsize; /**< hop size at which the source is read */ |
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[c41637b] | 55 | fvec_t *in; |
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| 56 | uint_t eof; |
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| 57 | |
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| 58 | RubberBandState rb; |
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| 59 | RubberBandOptions rboptions; |
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[8856791] | 60 | |
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| 61 | #ifdef HAVE_THREADS |
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| 62 | pthread_t read_thread; |
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| 63 | pthread_mutex_t read_mutex; |
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| 64 | pthread_cond_t read_avail; |
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| 65 | pthread_cond_t read_request; |
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| 66 | sint_t available; |
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| 67 | #endif |
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[c41637b] | 68 | }; |
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| 69 | |
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| 70 | extern RubberBandOptions aubio_get_rubberband_opts(const char_t *mode); |
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| 71 | |
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[a874c48] | 72 | static void aubio_timestretch_warmup (aubio_timestretch_t * p); |
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[992ac88] | 73 | static sint_t aubio_timestretch_fetch(aubio_timestretch_t *p, uint_t fetch); |
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[8856791] | 74 | #ifdef HAVE_THREADS |
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| 75 | static void *aubio_timestretch_readfn(void *p); |
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| 76 | #endif |
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[a874c48] | 77 | |
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[c41637b] | 78 | aubio_timestretch_t * |
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| 79 | new_aubio_timestretch (const char_t * uri, const char_t * mode, |
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| 80 | smpl_t stretchratio, uint_t hopsize, uint_t samplerate) |
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| 81 | { |
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| 82 | aubio_timestretch_t *p = AUBIO_NEW (aubio_timestretch_t); |
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| 83 | p->samplerate = samplerate; |
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| 84 | p->hopsize = hopsize; |
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[8856791] | 85 | //p->source_hopsize = 2048; |
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[992ac88] | 86 | p->source_hopsize = hopsize; |
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[c41637b] | 87 | p->pitchscale = 1.; |
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| 88 | p->eof = 0; |
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| 89 | |
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[992ac88] | 90 | p->source = new_aubio_source(uri, samplerate, p->source_hopsize); |
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[c41637b] | 91 | if (!p->source) goto beach; |
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| 92 | if (samplerate == 0 ) p->samplerate = aubio_source_get_samplerate(p->source); |
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| 93 | |
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[992ac88] | 94 | p->in = new_fvec(p->source_hopsize); |
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[c41637b] | 95 | |
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| 96 | if (stretchratio <= MAX_STRETCH_RATIO && stretchratio >= MIN_STRETCH_RATIO) { |
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| 97 | p->stretchratio = stretchratio; |
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| 98 | } else { |
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| 99 | AUBIO_ERR("timestretch: stretchratio should be in the range [%.3f, %.3f], got %f\n", |
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| 100 | MIN_STRETCH_RATIO, MAX_STRETCH_RATIO, stretchratio); |
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| 101 | goto beach; |
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| 102 | } |
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| 103 | |
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| 104 | p->rboptions = aubio_get_rubberband_opts(mode); |
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| 105 | if (p->rboptions < 0) { |
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| 106 | AUBIO_ERR("timestretch: unknown time stretching method %s\n", mode); |
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| 107 | goto beach; |
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| 108 | } |
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| 109 | |
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| 110 | p->rb = rubberband_new(p->samplerate, 1, p->rboptions, p->stretchratio, p->pitchscale); |
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[992ac88] | 111 | rubberband_set_max_process_size(p->rb, p->source_hopsize); |
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[c41637b] | 112 | //rubberband_set_debug_level(p->rb, 10); |
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| 113 | |
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[8856791] | 114 | #ifdef HAVE_THREADS |
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| 115 | pthread_mutex_init(&p->read_mutex, 0); |
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| 116 | pthread_cond_init (&p->read_avail, 0); |
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| 117 | pthread_cond_init (&p->read_request, 0); |
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| 118 | pthread_create(&p->read_thread, 0, aubio_timestretch_readfn, p); |
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| 119 | //AUBIO_DBG("timestretch: new_ waiting for warmup, got %d available\n", p->available); |
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| 120 | pthread_mutex_lock(&p->read_mutex); |
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| 121 | pthread_cond_wait(&p->read_avail, &p->read_mutex); |
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| 122 | pthread_mutex_unlock(&p->read_mutex); |
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| 123 | //AUBIO_DBG("timestretch: new_ warm up success, got %d available\n", p->available); |
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| 124 | #else |
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[a874c48] | 125 | aubio_timestretch_warmup(p); |
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[8856791] | 126 | #endif |
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[a874c48] | 127 | |
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| 128 | return p; |
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| 129 | |
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| 130 | beach: |
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| 131 | del_aubio_timestretch(p); |
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| 132 | return NULL; |
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| 133 | } |
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| 134 | |
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[8856791] | 135 | #ifdef HAVE_THREADS |
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| 136 | void * |
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| 137 | aubio_timestretch_readfn(void *z) |
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| 138 | { |
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| 139 | aubio_timestretch_t *p = z; |
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| 140 | // signal main-thread when we are done |
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| 141 | //AUBIO_WRN("timestretch: read_thread locking, got %d available\n", p->available); |
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| 142 | pthread_mutex_lock(&p->read_mutex); |
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| 143 | aubio_timestretch_warmup(p); |
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| 144 | //AUBIO_WRN("timestretch: signaling warmup\n"); |
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| 145 | pthread_cond_signal(&p->read_avail); |
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| 146 | //AUBIO_WRN("timestretch: unlocking in readfn\n"); |
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| 147 | pthread_mutex_unlock(&p->read_mutex); |
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| 148 | AUBIO_WRN("timestretch: entering readfn loop\n"); |
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| 149 | while(1) { //p->available < (int)p->hopsize && p->eof != 1) { |
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| 150 | //AUBIO_WRN("timestretch: locking in readfn\n"); |
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| 151 | pthread_mutex_lock(&p->read_mutex); |
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| 152 | p->available = aubio_timestretch_fetch(p, p->hopsize); |
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| 153 | //AUBIO_WRN("timestretch: read_thread read %d\n", p->available); |
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| 154 | // signal main-thread when we are done |
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| 155 | //AUBIO_WRN("timestretch: signaling new read\n"); |
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| 156 | pthread_cond_signal(&p->read_avail); |
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| 157 | if (p->eof != 1) { |
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| 158 | pthread_cond_wait(&p->read_request, &p->read_mutex); |
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| 159 | } |
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| 160 | if (p->eof == 1) { |
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| 161 | AUBIO_WRN("timestretch: read_thread eof reached %d, %d/%d\n", p->available, |
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| 162 | p->hopsize, p->source_hopsize); |
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| 163 | pthread_mutex_unlock(&p->read_mutex); |
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| 164 | break; |
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| 165 | } |
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| 166 | //AUBIO_WRN("timestretch: unlocking in readfn\n"); |
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| 167 | pthread_mutex_unlock(&p->read_mutex); |
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| 168 | } |
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| 169 | #if 1 |
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| 170 | pthread_mutex_lock(&p->read_mutex); |
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| 171 | //AUBIO_WRN("timestretch: signaling end\n"); |
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| 172 | pthread_cond_signal(&p->read_avail); |
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| 173 | pthread_mutex_unlock(&p->read_mutex); |
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| 174 | #endif |
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| 175 | //AUBIO_WRN("timestretch: exiting readfn\n"); |
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| 176 | pthread_exit(NULL); |
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| 177 | } |
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| 178 | #endif |
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| 179 | |
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[a874c48] | 180 | static void |
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| 181 | aubio_timestretch_warmup (aubio_timestretch_t * p) |
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| 182 | { |
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[c41637b] | 183 | // warm up rubber band |
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| 184 | unsigned int latency = MAX(p->hopsize, rubberband_get_latency(p->rb)); |
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[8856791] | 185 | #ifdef HAVE_THREADS |
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| 186 | p->available = aubio_timestretch_fetch(p, latency); |
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| 187 | #else |
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[992ac88] | 188 | aubio_timestretch_fetch(p, latency); |
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[8856791] | 189 | #endif |
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[c41637b] | 190 | } |
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| 191 | |
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| 192 | void |
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| 193 | del_aubio_timestretch (aubio_timestretch_t * p) |
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| 194 | { |
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[8856791] | 195 | #ifdef HAVE_THREADS |
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| 196 | pthread_mutex_lock(&p->read_mutex); |
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| 197 | pthread_cond_signal(&p->read_request); |
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| 198 | //pthread_cond_wait(&p->read_avail, &p->read_mutex); |
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| 199 | pthread_mutex_unlock(&p->read_mutex); |
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| 200 | #if 1 |
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| 201 | void *threadfn; |
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| 202 | if ((p->eof == 0) && (pthread_cancel(p->read_thread))) { |
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| 203 | AUBIO_WRN("timestretch: cancelling thread failed\n"); |
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| 204 | } |
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| 205 | if (pthread_join(p->read_thread, &threadfn)) { |
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| 206 | AUBIO_WRN("timestretch: joining thread failed\n"); |
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| 207 | } |
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| 208 | #endif |
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| 209 | pthread_mutex_destroy(&p->read_mutex); |
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| 210 | pthread_cond_destroy(&p->read_avail); |
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| 211 | pthread_cond_destroy(&p->read_request); |
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| 212 | #endif |
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[456a784] | 213 | if (p->in) del_fvec(p->in); |
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[c41637b] | 214 | if (p->source) del_aubio_source(p->source); |
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| 215 | if (p->rb) { |
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| 216 | rubberband_delete(p->rb); |
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| 217 | } |
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| 218 | AUBIO_FREE (p); |
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| 219 | } |
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| 220 | |
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[fd99f0d] | 221 | uint_t |
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| 222 | aubio_timestretch_get_samplerate (aubio_timestretch_t * p) |
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| 223 | { |
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| 224 | return p->samplerate; |
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| 225 | } |
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| 226 | |
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[c41637b] | 227 | uint_t aubio_timestretch_get_latency (aubio_timestretch_t * p) { |
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| 228 | return rubberband_get_latency(p->rb); |
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| 229 | } |
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| 230 | |
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| 231 | uint_t |
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| 232 | aubio_timestretch_set_stretch (aubio_timestretch_t * p, smpl_t stretch) |
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| 233 | { |
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| 234 | if (stretch >= MIN_STRETCH_RATIO && stretch <= MAX_STRETCH_RATIO) { |
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| 235 | p->stretchratio = stretch; |
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[85755eb] | 236 | rubberband_set_time_ratio(p->rb, 1./p->stretchratio); |
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[c41637b] | 237 | return AUBIO_OK; |
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| 238 | } else { |
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[9bd769a] | 239 | AUBIO_WRN("timestretch: could not set stretch ratio to %.2f\n", stretch); |
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[c41637b] | 240 | return AUBIO_FAIL; |
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| 241 | } |
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| 242 | } |
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| 243 | |
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| 244 | smpl_t |
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| 245 | aubio_timestretch_get_stretch (aubio_timestretch_t * p) |
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| 246 | { |
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| 247 | return p->stretchratio; |
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| 248 | } |
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| 249 | |
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| 250 | uint_t |
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| 251 | aubio_timestretch_set_pitchscale (aubio_timestretch_t * p, smpl_t pitchscale) |
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| 252 | { |
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| 253 | if (pitchscale >= 0.0625 && pitchscale <= 4.) { |
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| 254 | p->pitchscale = pitchscale; |
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| 255 | rubberband_set_pitch_scale(p->rb, p->pitchscale); |
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| 256 | return AUBIO_OK; |
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| 257 | } else { |
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[9bd769a] | 258 | AUBIO_WRN("timestretch: could not set pitchscale to %.2f\n", pitchscale); |
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[c41637b] | 259 | return AUBIO_FAIL; |
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| 260 | } |
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| 261 | } |
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| 262 | |
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| 263 | smpl_t |
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| 264 | aubio_timestretch_get_pitchscale (aubio_timestretch_t * p) |
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| 265 | { |
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| 266 | return p->pitchscale; |
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| 267 | } |
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| 268 | |
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| 269 | uint_t |
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| 270 | aubio_timestretch_set_transpose(aubio_timestretch_t * p, smpl_t transpose) |
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| 271 | { |
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| 272 | if (transpose >= -24. && transpose <= 24.) { |
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| 273 | smpl_t pitchscale = POW(2., transpose / 12.); |
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| 274 | return aubio_timestretch_set_pitchscale(p, pitchscale); |
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| 275 | } else { |
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[9bd769a] | 276 | AUBIO_WRN("timestretch: could not set transpose to %.2f\n", transpose); |
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[c41637b] | 277 | return AUBIO_FAIL; |
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| 278 | } |
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| 279 | } |
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| 280 | |
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| 281 | smpl_t |
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| 282 | aubio_timestretch_get_transpose(aubio_timestretch_t * p) |
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| 283 | { |
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| 284 | return 12. * LOG(p->pitchscale) / LOG(2.0); |
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| 285 | } |
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| 286 | |
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[a874c48] | 287 | sint_t |
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[992ac88] | 288 | aubio_timestretch_fetch(aubio_timestretch_t *p, uint_t length) |
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[c41637b] | 289 | { |
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[992ac88] | 290 | uint_t source_read = p->source_hopsize; |
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[c41637b] | 291 | // read more samples from source until we have enough available or eof is reached |
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| 292 | int available = rubberband_available(p->rb); |
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[992ac88] | 293 | while ((available < (int)length) && (p->eof == 0)) { |
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[c41637b] | 294 | aubio_source_do(p->source, p->in, &source_read); |
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[992ac88] | 295 | if (source_read < p->source_hopsize) { |
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[c41637b] | 296 | p->eof = 1; |
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| 297 | } |
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| 298 | rubberband_process(p->rb, (const float* const*)&(p->in->data), source_read, p->eof); |
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| 299 | available = rubberband_available(p->rb); |
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| 300 | } |
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[992ac88] | 301 | return available; |
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[a874c48] | 302 | } |
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| 303 | |
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| 304 | void |
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| 305 | aubio_timestretch_do (aubio_timestretch_t * p, fvec_t * out, uint_t * read) |
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| 306 | { |
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[8856791] | 307 | #ifndef HAVE_THREADS |
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[992ac88] | 308 | int available = aubio_timestretch_fetch(p, p->hopsize); |
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[8856791] | 309 | #else /* HAVE_THREADS */ |
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| 310 | int available; |
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| 311 | pthread_mutex_lock(&p->read_mutex); |
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| 312 | if (p->eof != 1) { |
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| 313 | // signal a read request |
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| 314 | pthread_cond_signal(&p->read_request); |
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| 315 | // wait for an available signal |
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| 316 | pthread_cond_wait(&p->read_avail, &p->read_mutex); |
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| 317 | } else { |
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| 318 | available = rubberband_available(p->rb); |
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| 319 | } |
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| 320 | #endif /* HAVE_THREADS */ |
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[c41637b] | 321 | // now retrieve the samples and write them into out->data |
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| 322 | if (available >= (int)p->hopsize) { |
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| 323 | rubberband_retrieve(p->rb, (float* const*)&(out->data), p->hopsize); |
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| 324 | *read = p->hopsize; |
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[9bd769a] | 325 | } else if (available > 0) { |
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[c41637b] | 326 | rubberband_retrieve(p->rb, (float* const*)&(out->data), available); |
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| 327 | *read = available; |
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[9bd769a] | 328 | } else { |
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| 329 | fvec_zeros(out); |
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| 330 | *read = 0; |
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[c41637b] | 331 | } |
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[8856791] | 332 | #ifdef HAVE_THREADS |
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| 333 | pthread_mutex_unlock(&p->read_mutex); |
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| 334 | #endif |
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[c41637b] | 335 | } |
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| 336 | |
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[a0a4d01] | 337 | uint_t |
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| 338 | aubio_timestretch_seek (aubio_timestretch_t *p, uint_t pos) |
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| 339 | { |
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[8856791] | 340 | uint_t err = AUBIO_OK; |
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| 341 | #if HAVE_THREADS |
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| 342 | AUBIO_WRN("timestretch: seek_ waiting for warmup, got %d available\n", p->available); |
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| 343 | pthread_mutex_lock(&p->read_mutex); |
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| 344 | #endif |
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[a0a4d01] | 345 | p->eof = 0; |
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| 346 | rubberband_reset(p->rb); |
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[8856791] | 347 | err = aubio_source_seek(p->source, pos); |
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| 348 | #if HAVE_THREADS |
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| 349 | p->available = 0; |
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| 350 | void *threadfn; |
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| 351 | if ((p->eof == 0) && (pthread_cancel(p->read_thread) == 0)) { |
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| 352 | AUBIO_WRN("timestretch: cancelling thread failed\n"); |
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| 353 | } |
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| 354 | if (pthread_join(p->read_thread, &threadfn)) { |
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| 355 | AUBIO_WRN("timestretch: joining thread failed\n"); |
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| 356 | } |
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| 357 | pthread_create(&p->read_thread, 0, aubio_timestretch_readfn, p); |
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| 358 | pthread_cond_wait(&p->read_avail, &p->read_mutex); |
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| 359 | pthread_mutex_unlock(&p->read_mutex); |
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| 360 | //AUBIO_WRN("timestretch: seek_ warm up success, got %d available\n", p->available); |
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| 361 | #endif |
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| 362 | return err; |
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[a0a4d01] | 363 | } |
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| 364 | |
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[c41637b] | 365 | #endif |
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