2 Copyright (C) 2003-2009 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 */
36 char_t *sink_uri = NULL;
37 char_t *source_uri = NULL;
39 uint_t samplerate = 0;
40 uint_t buffer_size = 512;
41 uint_t overlap_size = 256;
43 char_t * onset_method = "default";
44 smpl_t onset_threshold = 0.0; // will be set if != 0.
46 char_t * pitch_unit = "default";
47 char_t * pitch_method = "default";
48 smpl_t pitch_tolerance = 0.0; // will be set if != 0.
50 char_t * tempo_method = "default";
52 smpl_t silence = -90.;
56 // internal memory stuff
57 aubio_source_t *this_source = NULL;
58 aubio_sink_t *this_sink = NULL;
68 extern void usage (FILE * stream, int exit_code);
69 extern int parse_args (int argc, char **argv);
72 examples_common_init (int argc, char **argv)
75 /* parse command line arguments */
76 parse_args (argc, argv);
79 debug ("Opening files ...\n");
80 this_source = new_aubio_source ((char_t*)source_uri, 0, overlap_size);
81 if (this_source == NULL) {
82 outmsg ("Could not open input file %s.\n", source_uri);
85 samplerate = aubio_source_get_samplerate(this_source);
86 if (sink_uri != NULL) {
87 this_sink = new_aubio_sink ((char_t*)sink_uri, samplerate);
88 if (this_sink == NULL) {
89 outmsg ("Could not open output file %s.\n", sink_uri);
94 ibuf = new_fvec (overlap_size);
95 obuf = new_fvec (overlap_size);
100 examples_common_del (void)
108 aubio_jack_t *jack_setup;
112 examples_common_process (aubio_process_func_t process_func,
113 aubio_print_func_t print)
120 debug ("Jack init ...\n");
121 jack_setup = new_aubio_jack (1, 1,
122 0, 1, (aubio_process_func_t) process_func);
123 debug ("Jack activation ...\n");
124 aubio_jack_activate (jack_setup);
125 debug ("Processing (Ctrl+C to quit) ...\n");
127 aubio_jack_close (jack_setup);
130 outmsg ("Compiled without jack output, exiting.\n");
135 debug ("Processing ...\n");
140 aubio_source_do (this_source, ibuf, &read);
141 process_func (&ibuf->data, &obuf->data, overlap_size);
144 aubio_sink_do (this_sink, obuf, overlap_size);
147 } while (read == overlap_size);
149 debug ("Processed %d frames of %d samples.\n", frames, buffer_size);
151 del_aubio_source (this_source);
152 del_aubio_sink (this_sink);
158 send_noteon (int pitch, int velo)
160 smpl_t mpitch = floor (aubio_freqtomidi (pitch) + .5);
162 jack_midi_event_t ev;
164 ev.buffer = malloc (3 * sizeof (jack_midi_data_t)); // FIXME
168 ev.buffer[1] = mpitch;
170 ev.buffer[0] = 0x80; /* note off */
172 ev.buffer[0] = 0x90; /* note on */
174 aubio_jack_midi_event_write (jack_setup, (jack_midi_event_t *) & ev);
179 outmsg ("%f\n", frames * overlap_size / (float) samplerate);
181 outmsg ("%f\t%f\t", mpitch, frames * overlap_size / (float) samplerate);