int main(){
/* allocate some memory */
uint_t win_s = 1024; /* window size */
fvec_t * in = new_fvec (win_s); /* input buffer */
fvec_t * out = new_fvec (2); /* input buffer */
aubio_tempo_t * o = new_aubio_tempo("complex", win_s, win_s/4, 44100.);
uint_t i = 0;
smpl_t curtempo, curtempoconf;
while (i < 1000) {
aubio_tempo_do(o,in,out);
curtempo = aubio_tempo_get_bpm(o);
if (curtempo != 0.) {
fprintf(stdout,"%f\n",curtempo);
return 1;
}
curtempoconf = aubio_tempo_get_confidence(o);
if (curtempoconf != 0.) {
fprintf(stdout,"%f\n",curtempo);
return 1;
}
i++;
};
del_aubio_tempo(o);
del_fvec(in);
del_fvec(out);
aubio_cleanup();
return 0;
}
void process_block(fvec_t * ibuf, fvec_t *obuf) {
aubio_tempo_do (tempo, ibuf, tempo_out);
is_beat = fvec_get_sample (tempo_out, 0);
//smpl_t bpm = aubio_tempo_get_bpm(tempo);
//uint_t last_beat = aubio_tempo_get_last(tempo);
aubio_pitch_do (pitch, ibuf, pitch_out);
smpl_t freq = fvec_get_sample(pitch_out, 0);
if (silence_threshold != -90.)
is_silence = aubio_silence_detection(ibuf, silence_threshold);
fvec_zeros (obuf);
if ( is_beat && !is_silence ) {
samples_per_beat = total_frames - my_last_beat;
my_last_beat = total_frames;
aubio_wavetable_play ( wavetable );
} else {
aubio_wavetable_stop ( wavetable );
}
if (mix_input)
aubio_wavetable_do (wavetable, ibuf, obuf);
else
aubio_wavetable_do (wavetable, obuf, obuf);
rgb_music_iterate(my_last_beat, samples_per_beat, total_frames, freq);
total_frames += hop_size;
}
int main (int argc, char **argv)
{
uint_t err = 0;
if (argc < 2) {
err = 2;
PRINT_ERR("not enough arguments\n");
PRINT_MSG("read a wave file as a mono vector\n");
PRINT_MSG("usage: %s <source_path> [samplerate] [win_size] [hop_size]\n", argv[0]);
return err;
}
uint_t samplerate = 0;
if ( argc >= 3 ) samplerate = atoi(argv[2]);
uint_t win_size = 1024; // window size
if ( argc >= 4 ) win_size = atoi(argv[3]);
uint_t hop_size = win_size / 4;
if ( argc >= 5 ) hop_size = atoi(argv[4]);
uint_t n_frames = 0, read = 0;
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 (1); // output position
// create tempo object
aubio_tempo_t * o = new_aubio_tempo("default", win_size, hop_size, samplerate);
do {
// put some fresh data in input vector
aubio_source_do(source, in, &read);
// execute tempo
aubio_tempo_do(o,in,out);
// do something with the beats
if (out->data[0] != 0) {
PRINT_MSG("beat at %.3fms, %.3fs, frame %d, %.2fbpm with confidence %.2f\n",
aubio_tempo_get_last_ms(o), aubio_tempo_get_last_s(o),
aubio_tempo_get_last(o), aubio_tempo_get_bpm(o), aubio_tempo_get_confidence(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_tempo(o);
del_fvec(in);
del_fvec(out);
del_aubio_source(source);
beach:
aubio_cleanup();
return err;
}
static GstFlowReturn
gst_aubio_tempo_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
{
uint j;
GstAubioTempo *filter = GST_AUBIOTEMPO(trans);
GstAudioFilter *audiofilter = GST_AUDIO_FILTER(trans);
gint nsamples = GST_BUFFER_SIZE (buf) / (4 * audiofilter->format.channels);
/* block loop */
for (j = 0; j < nsamples; j++) {
/* copy input to ibuf */
fvec_write_sample(filter->ibuf, ((smpl_t *) GST_BUFFER_DATA(buf))[j],
filter->pos);
if (filter->pos == filter->hop_size - 1) {
aubio_tempo_do(filter->t, filter->ibuf, filter->out);
if (filter->out->data[0]> 0.) {
gdouble now = GST_BUFFER_OFFSET (buf);
// correction of inside buffer time
now += (smpl_t)(j - filter->hop_size + 1);
// correction of float period
now += (filter->out->data[0] - 1.)*(smpl_t)filter->hop_size;
if (filter->last_beat != -1 && now > filter->last_beat) {
filter->bpm = 60./(GST_FRAMES_TO_CLOCK_TIME(now - filter->last_beat, audiofilter->format.rate))*1.e+9;
} else {
filter->bpm = 0.;
}
if (filter->silent == FALSE) {
g_print ("beat: %f ", GST_FRAMES_TO_CLOCK_TIME( now, audiofilter->format.rate)*1.e-9);
g_print ("| bpm: %f\n", filter->bpm);
}
GST_LOG_OBJECT (filter, "beat %" GST_TIME_FORMAT ", bpm %3.2f",
GST_TIME_ARGS(now), filter->bpm);
if (filter->message) {
GstMessage *m = gst_aubio_tempo_message_new (filter, now);
gst_element_post_message (GST_ELEMENT (filter), m);
}
filter->last_beat = now;
}
filter->pos = -1; /* so it will be zero next j loop */
}
filter->pos++;
}
return GST_FLOW_OK;
}
void ofxAubioBeat::blockAudioIn()
{
aubio_tempo_do(tempo, aubio_input, aubio_output);
if (aubio_output->data[0]) {
//ofLogNotice() << "found beat: " << aubio_output->data[0];
bpm = aubio_tempo_get_bpm(tempo);
float last_beat = aubio_tempo_get_last_s(tempo);
ofNotifyEvent(gotBeat, last_beat, this);
ofNotifyEvent(gotGlobalBeat, last_beat);
}
}
void process_block(fvec_t * ibuf, fvec_t *obuf) {
aubio_tempo_do (tempo, ibuf, tempo_out);
is_beat = fvec_get_sample (tempo_out, 0);
if (silence_threshold != -90.)
is_silence = aubio_silence_detection(ibuf, silence_threshold);
fvec_zeros (obuf);
if ( is_beat && !is_silence ) {
aubio_wavetable_play ( wavetable );
} else {
aubio_wavetable_stop ( wavetable );
}
if (mix_input)
aubio_wavetable_do (wavetable, ibuf, obuf);
else
aubio_wavetable_do (wavetable, obuf, obuf);
}
