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 * tempo_method = "default";
53 smpl_t silence_threshold = -90.;
56 uint_t force_overwrite = 0;
59 // internal memory stuff
60 aubio_source_t *this_source = NULL;
61 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 aubio_jack_t *jack_setup;
76 examples_common_init (int argc, char **argv)
79 /* parse command line arguments */
80 parse_args (argc, argv);
83 debug ("Opening files ...\n");
84 this_source = new_aubio_source ((char_t*)source_uri, samplerate, hop_size);
85 if (this_source == NULL) {
86 outmsg ("Could not open input file %s\n", source_uri);
89 if (samplerate == 0) {
90 samplerate = aubio_source_get_samplerate(this_source);
92 if (sink_uri != NULL) {
93 uint_t sink_exists = (access(sink_uri, F_OK) == 0 );
94 if (!force_overwrite && sink_exists) {
95 outmsg ("Output file %s already exists, use -f to overwrite.\n",
99 this_sink = new_aubio_sink ((char_t*)sink_uri, samplerate);
100 if (this_sink == NULL) {
101 outmsg ("Could not open output file %s\n", sink_uri);
107 debug ("Jack init ...\n");
108 jack_setup = new_aubio_jack (hop_size, 1, 1, 0, 1);
109 samplerate = aubio_jack_get_samplerate (jack_setup);
113 ibuf = new_fvec (hop_size);
114 obuf = new_fvec (hop_size);
119 examples_common_del (void)
129 examples_common_process (aubio_process_func_t process_func,
130 aubio_print_func_t print)
137 debug ("Jack activation ...\n");
138 aubio_jack_activate (jack_setup, process_func);
139 debug ("Processing (Ctrl+C to quit) ...\n");
141 aubio_jack_close (jack_setup);
144 outmsg ("Compiled without jack output, exiting.\n");
150 uint_t total_read = 0;
153 aubio_source_do (this_source, ibuf, &read);
154 process_func (ibuf, obuf);
155 // print to console if verbose or no output given
156 if (verbose || sink_uri == NULL) {
160 aubio_sink_do (this_sink, obuf, hop_size);
164 } while (read == hop_size);
166 verbmsg ("read %d samples (%d blocks of %d) from %s at %dHz\n",
167 total_read, blocks, hop_size, source_uri, samplerate);
169 del_aubio_source (this_source);
170 del_aubio_sink (this_sink);
176 send_noteon (int pitch, int velo)
178 smpl_t mpitch = floor (aubio_freqtomidi (pitch) + .5);
180 jack_midi_event_t ev;
182 ev.buffer = malloc (3 * sizeof (jack_midi_data_t)); // FIXME
186 ev.buffer[1] = mpitch;
188 ev.buffer[0] = 0x80; /* note off */
190 ev.buffer[0] = 0x90; /* note on */
192 aubio_jack_midi_event_write (jack_setup, (jack_midi_event_t *) & ev);
196 verbmsg ("%f\n", blocks * hop_size / (float) samplerate);
198 verbmsg ("%f\t%f\t", mpitch, blocks * hop_size / (float) samplerate);