ref: 5782f99c808079d0530b9314312520c66f88a8f3
dir: /examples/utils.c/
/*
Copyright (C) 2003-2013 Paul Brossier <piem@aubio.org>
This file is part of aubio.
aubio is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
aubio is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with aubio. If not, see <http://www.gnu.org/licenses/>.
*/
/**
This file includes some tools common to all examples. Code specific to the
algorithm performed by each program should go in the source file of that
program instead.
*/
#include "utils.h"
#ifdef HAVE_JACK
#include "jackio.h"
#endif /* HAVE_JACK */
int verbose = 0;
int usejack = 0;
// input / output
char_t *sink_uri = NULL;
char_t *source_uri = NULL;
// general stuff
uint_t samplerate = 0;
uint_t buffer_size = 512;
uint_t hop_size = 256;
// onset stuff
char_t * onset_method = "default";
smpl_t onset_threshold = 0.0; // will be set if != 0.
smpl_t onset_minioi = 0.0; // will be set if != 0.
// pitch stuff
char_t * pitch_unit = "default";
char_t * pitch_method = "default";
smpl_t pitch_tolerance = 0.0; // will be set if != 0.
// time stuff
uint_t time_format = 0; // for "seconds", 1 for "ms", 2 for "samples"
// tempo stuff
char_t * tempo_method = "default";
// more general stuff
smpl_t silence_threshold = -90.;
uint_t mix_input = 0;
uint_t force_overwrite = 0;
//
// internal memory stuff
aubio_source_t *this_source = NULL;
aubio_sink_t *this_sink = NULL;
fvec_t *ibuf;
fvec_t *obuf;
smpl_t miditap_note = 69.;
smpl_t miditap_velo = 65.;
/* settings */
int blocks = 0;
extern void usage (FILE * stream, int exit_code);
extern int parse_args (int argc, char **argv);
#if HAVE_JACK
aubio_jack_t *jack_setup;
jack_midi_event_t ev;
#endif /* HAVE_JACK */
void examples_common_init (int argc, char **argv);
void examples_common_del (void);
void examples_common_process (aubio_process_func_t process_func,
aubio_print_func_t print);
void examples_common_init (int argc, char **argv)
{
/* parse command line arguments */
parse_args (argc, argv);
if (!usejack) {
debug ("Opening files ...\n");
this_source = new_aubio_source ((char_t*)source_uri, samplerate, hop_size);
if (this_source == NULL) {
errmsg ("Error: could not open input file %s\n", source_uri);
exit (1);
}
if (samplerate == 0) {
samplerate = aubio_source_get_samplerate(this_source);
}
if (sink_uri != NULL) {
uint_t sink_exists = (access(sink_uri, F_OK) == 0 );
if (!force_overwrite && sink_exists) {
errmsg ("Error: output file %s already exists, use -f to overwrite.\n",
sink_uri);
exit (1);
}
this_sink = new_aubio_sink ((char_t*)sink_uri, samplerate);
if (this_sink == NULL) {
errmsg ("Error: could not create output file %s\n", sink_uri);
exit (1);
}
}
#ifdef HAVE_JACK
} else {
debug ("Jack init ...\n");
jack_setup = new_aubio_jack (hop_size, 1, 1, 0, 1);
samplerate = aubio_jack_get_samplerate (jack_setup);
source_uri = "jack";
#endif /* HAVE_JACK */
}
ibuf = new_fvec (hop_size);
obuf = new_fvec (hop_size);
}
void examples_common_del (void)
{
#ifdef HAVE_JACK
if (ev.buffer) free(ev.buffer);
#endif
del_fvec (ibuf);
del_fvec (obuf);
aubio_cleanup ();
fflush(stderr);
fflush(stdout);
}
void examples_common_process (aubio_process_func_t process_func,
aubio_print_func_t print)
{
uint_t read = 0;
if (usejack) {
#ifdef HAVE_JACK
ev.size = 3;
ev.buffer = malloc (3 * sizeof (jack_midi_data_t));
ev.time = 0; // send it now
debug ("Jack activation ...\n");
aubio_jack_activate (jack_setup, process_func);
debug ("Processing (Ctrl+C to quit) ...\n");
pause ();
aubio_jack_close (jack_setup);
#else /* HAVE_JACK */
usage (stderr, 1);
outmsg ("Compiled without jack output, exiting.\n");
#endif /* HAVE_JACK */
} else {
uint_t total_read = 0;
blocks = 0;
do {
aubio_source_do (this_source, ibuf, &read);
process_func (ibuf, obuf);
// print to console if verbose or no output given
if (verbose || sink_uri == NULL) {
print();
}
if (this_sink) {
aubio_sink_do (this_sink, obuf, hop_size);
}
blocks++;
total_read += read;
} while (read == hop_size);
verbmsg ("read %.2fs (%d samples in %d blocks of %d) from %s at %dHz\n",
total_read * 1. / samplerate,
total_read, blocks, hop_size, source_uri, samplerate);
del_aubio_source (this_source);
del_aubio_sink (this_sink);
}
}
void
send_noteon (smpl_t pitch, smpl_t velo)
{
#ifdef HAVE_JACK
if (usejack) {
ev.buffer[2] = velo;
ev.buffer[1] = pitch;
if (velo == 0) {
ev.buffer[0] = 0x80; /* note off */
} else {
ev.buffer[0] = 0x90; /* note on */
}
aubio_jack_midi_event_write (jack_setup, (jack_midi_event_t *) & ev);
} else
#endif
if (velo == 0) {
print_time (blocks * hop_size);
outmsg ("\n");
} else {
outmsg ("%f\t", pitch);
print_time (blocks * hop_size);
outmsg ("\t");
}
}
void print_time (uint_t time_in_samples) {
/* output times in selected format */
if (time_format == 2) {
outmsg ("%d", time_in_samples);
} else if (time_format == 1) {
outmsg ("%f", 1000. * time_in_samples / (float) samplerate);
} else {
outmsg ("%f", time_in_samples / (float) samplerate);
}
}