2 Copyright (C) 2003-2013 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/>.
23 This file includes some tools common to all examples. Code specific to the
24 algorithm performed by each program should go in the source file of that
32 #endif /* HAVE_JACK */
37 char_t *sink_uri = NULL;
38 char_t *source_uri = NULL;
40 uint_t samplerate = 0;
41 uint_t buffer_size = 512;
42 uint_t hop_size = 256;
44 char_t * onset_method = "default";
45 smpl_t onset_threshold = 0.0; // will be set if != 0.
46 smpl_t onset_minioi = 0.0; // will be set if != 0.
48 char_t * pitch_unit = "default";
49 char_t * pitch_method = "default";
50 smpl_t pitch_tolerance = 0.0; // will be set if != 0.
52 uint_t time_format = 0; // for "seconds", 1 for "ms", 2 for "samples"
54 char_t * tempo_method = "default";
56 smpl_t silence_threshold = -90.;
59 uint_t force_overwrite = 0;
62 // internal memory stuff
63 aubio_source_t *this_source = NULL;
64 aubio_sink_t *this_sink = NULL;
68 smpl_t miditap_note = 69.;
69 smpl_t miditap_velo = 65.;
74 extern void usage (FILE * stream, int exit_code);
75 extern int parse_args (int argc, char **argv);
78 aubio_jack_t *jack_setup;
80 #endif /* HAVE_JACK */
82 void examples_common_init (int argc, char **argv);
83 void examples_common_del (void);
84 void examples_common_process (aubio_process_func_t process_func,
85 aubio_print_func_t print);
87 void examples_common_init (int argc, char **argv)
90 /* parse command line arguments */
91 parse_args (argc, argv);
94 debug ("Opening files ...\n");
95 this_source = new_aubio_source ((char_t*)source_uri, samplerate, hop_size);
96 if (this_source == NULL) {
97 errmsg ("Error: could not open input file %s\n", source_uri);
100 if (samplerate == 0) {
101 samplerate = aubio_source_get_samplerate(this_source);
103 if (sink_uri != NULL) {
104 uint_t sink_exists = (access(sink_uri, F_OK) == 0 );
105 if (!force_overwrite && sink_exists) {
106 errmsg ("Error: output file %s already exists, use -f to overwrite.\n",
110 this_sink = new_aubio_sink ((char_t*)sink_uri, samplerate);
111 if (this_sink == NULL) {
112 errmsg ("Error: could not create output file %s\n", sink_uri);
118 debug ("Jack init ...\n");
119 jack_setup = new_aubio_jack (hop_size, 1, 1, 0, 1);
120 samplerate = aubio_jack_get_samplerate (jack_setup);
122 #endif /* HAVE_JACK */
124 ibuf = new_fvec (hop_size);
125 obuf = new_fvec (hop_size);
129 void examples_common_del (void)
132 if (ev.buffer) free(ev.buffer);
141 void examples_common_process (aubio_process_func_t process_func,
142 aubio_print_func_t print)
150 ev.buffer = malloc (3 * sizeof (jack_midi_data_t));
151 ev.time = 0; // send it now
152 debug ("Jack activation ...\n");
153 aubio_jack_activate (jack_setup, process_func);
154 debug ("Processing (Ctrl+C to quit) ...\n");
156 aubio_jack_close (jack_setup);
157 #else /* HAVE_JACK */
159 outmsg ("Compiled without jack output, exiting.\n");
160 #endif /* HAVE_JACK */
164 uint_t total_read = 0;
168 aubio_source_do (this_source, ibuf, &read);
169 process_func (ibuf, obuf);
170 // print to console if verbose or no output given
171 if (verbose || sink_uri == NULL) {
175 aubio_sink_do (this_sink, obuf, hop_size);
179 } while (read == hop_size);
181 verbmsg ("read %.2fs (%d samples in %d blocks of %d) from %s at %dHz\n",
182 total_read * 1. / samplerate,
183 total_read, blocks, hop_size, source_uri, samplerate);
185 del_aubio_source (this_source);
186 del_aubio_sink (this_sink);
192 send_noteon (smpl_t pitch, smpl_t velo)
197 ev.buffer[1] = pitch;
199 ev.buffer[0] = 0x80; /* note off */
201 ev.buffer[0] = 0x90; /* note on */
203 aubio_jack_midi_event_write (jack_setup, (jack_midi_event_t *) & ev);
207 print_time (blocks * hop_size);
210 outmsg ("%f\t", pitch);
211 print_time (blocks * hop_size);
216 void print_time (uint_t time_in_samples) {
217 /* output times in selected format */
218 if (time_format == 2) {
219 outmsg ("%d", time_in_samples);
220 } else if (time_format == 1) {
221 outmsg ("%f", 1000. * time_in_samples / (float) samplerate);
223 outmsg ("%f", time_in_samples / (float) samplerate);