aubio 0.4.9

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onset/test-onset.c
#include <aubio.h>
#include "utils_tests.h"
int test_wrong_params(void);
int main (int argc, char **argv)
{
uint_t err = 0;
if (argc < 2) {
err = 2;
PRINT_WRN("no arguments, running tests\n");
err = test_wrong_params();
PRINT_MSG("usage: %s <source_path> [samplerate] [hop_size]\n", argv[0]);
return err;
}
uint_t samplerate = 0;
uint_t win_s = 1024; // window size
uint_t hop_size = win_s / 4;
uint_t n_frames = 0, read = 0;
if ( argc >= 3 ) samplerate = atoi(argv[2]);
if ( argc >= 4 ) hop_size = atoi(argv[3]);
char_t *source_path = argv[1];
aubio_source_t * source = new_aubio_source(source_path, samplerate, hop_size);
if (!source) { err = 1; goto beach; }
if (samplerate == 0 ) samplerate = aubio_source_get_samplerate(source);
// create some vectors
fvec_t * in = new_fvec (hop_size); // input audio buffer
fvec_t * out = new_fvec (2); // output position
// create onset object
aubio_onset_t * o = new_aubio_onset("default", win_s, hop_size, samplerate);
do {
// put some fresh data in input vector
aubio_source_do(source, in, &read);
// execute onset
aubio_onset_do(o,in,out);
// do something with the onsets
if (out->data[0] != 0) {
PRINT_MSG("onset at %.3fms, %.3fs, frame %d\n",
aubio_onset_get_last_ms(o), aubio_onset_get_last_s(o),
aubio_onset_get_last(o));
}
n_frames += read;
} while ( read == hop_size );
PRINT_MSG("read %.2fs, %d frames at %dHz (%d blocks) from %s\n",
n_frames * 1. / samplerate,
n_frames, samplerate,
n_frames / hop_size, source_path);
// clean up memory
del_aubio_source(source);
del_aubio_onset(o);
del_fvec(in);
del_fvec(out);
beach:
aubio_cleanup();
return err;
}
int test_wrong_params(void)
{
uint_t win_size = 1024;
uint_t hop_size = win_size / 2;
uint_t samplerate = 44100;
// hop_size < 1
if (new_aubio_onset("default", 5, 0, samplerate)) return 1;
// buf_size < 2
if (new_aubio_onset("default", 1, 1, samplerate)) return 1;
// buf_size < hop_size
if (new_aubio_onset("default", hop_size, win_size, samplerate)) return 1;
// samplerate < 1
if (new_aubio_onset("default", 1024, 512, 0)) return 1;
// specdesc creation failed
if (new_aubio_onset("abcd", win_size, win_size/2, samplerate)) return 1;
aubio_onset_t *o;
// pv creation might fail
o = new_aubio_onset("default", 5, 2, samplerate);
if (o) del_aubio_onset(o);
o = new_aubio_onset("default", win_size, hop_size, samplerate);
if (!aubio_onset_set_default_parameters(o, "wrong_type")) return 1;
del_aubio_onset(o);
return run_on_default_source(main);
}
aubio.h
Global aubio include file.
new_fvec
fvec_t * new_fvec(uint_t length)
fvec_t buffer creation function
del_fvec
void del_fvec(fvec_t *s)
fvec_t buffer deletion function
aubio_cleanup
void aubio_cleanup(void)
clean up cached memory at the end of program
aubio_onset_set_default_parameters
uint_t aubio_onset_set_default_parameters(aubio_onset_t *o, const char_t *onset_mode)
set default parameters
aubio_onset_do
void aubio_onset_do(aubio_onset_t *o, const fvec_t *input, fvec_t *onset)
execute onset detection
aubio_onset_get_last
uint_t aubio_onset_get_last(const aubio_onset_t *o)
get the time of the latest onset detected, in samples
del_aubio_onset
void del_aubio_onset(aubio_onset_t *o)
delete onset detection object
aubio_onset_get_last_s
smpl_t aubio_onset_get_last_s(const aubio_onset_t *o)
get the time of the latest onset detected, in seconds
aubio_onset_t
struct _aubio_onset_t aubio_onset_t
onset detection object
Definition onset.h:50
aubio_onset_get_last_ms
smpl_t aubio_onset_get_last_ms(const aubio_onset_t *o)
get the time of the latest onset detected, in milliseconds
new_aubio_onset
aubio_onset_t * new_aubio_onset(const char_t *method, uint_t buf_size, uint_t hop_size, uint_t samplerate)
create onset detection object
aubio_source_get_samplerate
uint_t aubio_source_get_samplerate(aubio_source_t *s)
get samplerate of source object
aubio_source_t
struct _aubio_source_t aubio_source_t
media source object
Definition source.h:70
new_aubio_source
aubio_source_t * new_aubio_source(const char_t *uri, uint_t samplerate, uint_t hop_size)
create new aubio_source_t
del_aubio_source
void del_aubio_source(aubio_source_t *s)
close source and cleanup memory
aubio_source_do
void aubio_source_do(aubio_source_t *s, fvec_t *read_to, uint_t *read)
read monophonic vector of length hop_size from source object
fvec_t
Buffer for real data.
Definition fvec.h:67
fvec_t::data
smpl_t * data
data vector of length fvec_t.length
Definition fvec.h:69
uint_t
unsigned int uint_t
unsigned integer
Definition types.h:60
char_t
char char_t
character
Definition types.h:64