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.
47 char_t * pitch_unit = "default";
48 char_t * pitch_method = "default";
49 smpl_t pitch_tolerance = 0.0; // will be set if != 0.
51 char_t * time_format = "seconds";
53 char_t * tempo_method = "default";
55 smpl_t silence_threshold = -90.;
58 uint_t force_overwrite = 0;
61 // internal memory stuff
62 aubio_source_t *this_source = NULL;
63 aubio_sink_t *this_sink = NULL;
70 extern void usage (FILE * stream, int exit_code);
71 extern int parse_args (int argc, char **argv);
74 aubio_jack_t *jack_setup;
77 void examples_common_init (int argc, char **argv);
78 void examples_common_del (void);
79 void examples_common_process (aubio_process_func_t process_func,
80 aubio_print_func_t print);
82 void examples_common_init (int argc, char **argv)
85 /* parse command line arguments */
86 parse_args (argc, argv);
89 debug ("Opening files ...\n");
90 this_source = new_aubio_source ((char_t*)source_uri, samplerate, hop_size);
91 if (this_source == NULL) {
92 errmsg ("Error: could not open input file %s\n", source_uri);
95 if (samplerate == 0) {
96 samplerate = aubio_source_get_samplerate(this_source);
98 if (sink_uri != NULL) {
99 uint_t sink_exists = (access(sink_uri, F_OK) == 0 );
100 if (!force_overwrite && sink_exists) {
101 errmsg ("Error: output file %s already exists, use -f to overwrite.\n",
105 this_sink = new_aubio_sink ((char_t*)sink_uri, samplerate);
106 if (this_sink == NULL) {
107 errmsg ("Error: could not create output file %s\n", sink_uri);
113 debug ("Jack init ...\n");
114 jack_setup = new_aubio_jack (hop_size, 1, 1, 0, 1);
115 samplerate = aubio_jack_get_samplerate (jack_setup);
119 ibuf = new_fvec (hop_size);
120 obuf = new_fvec (hop_size);
124 void examples_common_del (void)
133 void examples_common_process (aubio_process_func_t process_func,
134 aubio_print_func_t print)
141 debug ("Jack activation ...\n");
142 aubio_jack_activate (jack_setup, process_func);
143 debug ("Processing (Ctrl+C to quit) ...\n");
145 aubio_jack_close (jack_setup);
148 outmsg ("Compiled without jack output, exiting.\n");
153 uint_t total_read = 0;
157 aubio_source_do (this_source, ibuf, &read);
158 process_func (ibuf, obuf);
159 // print to console if verbose or no output given
160 if (verbose || sink_uri == NULL) {
164 aubio_sink_do (this_sink, obuf, hop_size);
168 } while (read == hop_size);
170 verbmsg ("read %.2fs (%d samples in %d blocks of %d) from %s at %dHz\n",
171 total_read * 1. / samplerate,
172 total_read, blocks, hop_size, source_uri, samplerate);
174 del_aubio_source (this_source);
175 del_aubio_sink (this_sink);
181 send_noteon (int pitch, int velo)
183 smpl_t mpitch = floor (aubio_freqtomidi (pitch) + .5);
185 jack_midi_event_t ev;
187 ev.buffer = malloc (3 * sizeof (jack_midi_data_t)); // FIXME
191 ev.buffer[1] = mpitch;
193 ev.buffer[0] = 0x80; /* note off */
195 ev.buffer[0] = 0x90; /* note on */
197 aubio_jack_midi_event_write (jack_setup, (jack_midi_event_t *) & ev);
201 print_time (blocks * hop_size);
204 outmsg ("%f\t", mpitch);
205 print_time (blocks * hop_size);
210 void print_time (uint_t time_in_samples) {
211 /* output times in selected format */
212 if (strcmp (time_format, "samples") == 0) {
213 outmsg ("%d", time_in_samples);
214 } else if (strcmp (time_format, "ms") == 0) {
215 outmsg ("%f", 1000. * time_in_samples / (float) samplerate);
217 outmsg ("%f", time_in_samples / (float) samplerate);