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 (win_s/4); /* input buffer */
/* allocate fft and other memory space */
aubio_beattracking_t * tempo = new_aubio_beattracking(win_s);
uint_t i = 0;
smpl_t curtempo, curtempoconf;
while (i < 10) {
aubio_beattracking_do(tempo,in,out);
curtempo = aubio_beattracking_get_bpm(tempo);
if (curtempo != 0.) {
fprintf(stdout,"%f\n",curtempo);
return 1;
}
curtempoconf = aubio_beattracking_get_confidence(tempo);
if (curtempoconf != 0.) {
fprintf(stdout,"%f\n",curtempo);
return 1;
}
i++;
};
del_aubio_beattracking(tempo);
del_fvec(in);
del_fvec(out);
aubio_cleanup();
return 0;
}
/* execute tempo detection function on iput buffer */
void aubio_tempo_do(aubio_tempo_t *o, fvec_t * input, fvec_t * tempo)
{
uint_t i;
uint_t winlen = o->winlen;
uint_t step = o->step;
fvec_t * thresholded;
aubio_pvoc_do (o->pv, input, o->fftgrain);
aubio_specdesc_do (o->od, o->fftgrain, o->of);
/*if (usedoubled) {
aubio_specdesc_do(o2,fftgrain, onset2);
onset->data[0] *= onset2->data[0];
}*/
/* execute every overlap_size*step */
if (o->blockpos == (signed)step -1 ) {
/* check dfframe */
aubio_beattracking_do(o->bt,o->dfframe,o->out);
/* rotate dfframe */
for (i = 0 ; i < winlen - step; i++ )
o->dfframe->data[i] = o->dfframe->data[i+step];
for (i = winlen - step ; i < winlen; i++ )
o->dfframe->data[i] = 0.;
o->blockpos = -1;
}
o->blockpos++;
aubio_peakpicker_do (o->pp, o->of, o->onset);
tempo->data[1] = o->onset->data[0];
thresholded = aubio_peakpicker_get_thresholded_input(o->pp);
o->dfframe->data[winlen - step + o->blockpos] = thresholded->data[0];
/* end of second level loop */
tempo->data[0] = 0; /* reset tactus */
i=0;
for (i = 1; i < o->out->data[0]; i++ ) {
/* if current frame is a predicted tactus */
if (o->blockpos == FLOOR(o->out->data[i])) {
tempo->data[0] = o->out->data[i] - FLOOR(o->out->data[i]); /* set tactus */
/* test for silence */
/*
if (aubio_silence_detection(input, o->silence)==1) {
tempo->data[0] = 0; // unset beat if silent
}
*/
o->last_beat = o->total_frames + (uint_t)ROUND(tempo->data[0] * o->hop_size);
}
}
o->total_frames += o->hop_size;
return;
}
/* execute tempo detection function on iput buffer */
void aubio_tempo(aubio_tempo_t *o, fvec_t * input, fvec_t * tempo)
{
uint_t i;
uint_t winlen = o->winlen;
uint_t step = o->step;
aubio_pvoc_do (o->pv, input, o->fftgrain);
aubio_onsetdetection(o->od, o->fftgrain, o->of);
/*if (usedoubled) {
aubio_onsetdetection(o2,fftgrain, onset2);
onset->data[0][0] *= onset2->data[0][0];
}*/
/* execute every overlap_size*step */
if (o->blockpos == (signed)step -1 ) {
/* check dfframe */
aubio_beattracking_do(o->bt,o->dfframe,o->out);
/* rotate dfframe */
for (i = 0 ; i < winlen - step; i++ )
o->dfframe->data[0][i] = o->dfframe->data[0][i+step];
for (i = winlen - step ; i < winlen; i++ )
o->dfframe->data[0][i] = 0.;
o->blockpos = -1;
}
o->blockpos++;
tempo->data[0][1] = aubio_peakpick_pimrt_wt(o->of,o->pp,
&(o->dfframe->data[0][winlen - step + o->blockpos]));
/* end of second level loop */
tempo->data[0][0] = 0; /* reset tactus */
i=0;
for (i = 1; i < o->out->data[0][0]; i++ ) {
/* if current frame is a predicted tactus */
if (o->blockpos == o->out->data[0][i]) {
/* test for silence */
if (aubio_silence_detection(input, o->silence)==1) {
tempo->data[0][1] = 0; /* unset onset */
tempo->data[0][0] = 0; /* unset tactus */
} else {
tempo->data[0][0] = 1; /* set tactus */
}
}
}
}
//--------------------------------------------------------------
void aubioAnalyzer::processAudio (float * input, int bufferSize){
float rmsAmplitude = 0;
for (int i = 0; i < bufferSize; i++){
//calculate the root mean square amplitude
rmsAmplitude += sqrt(input[i]*input[i]);
//put the data into aubio
in->data[0][i] = input[i];
}
//now we need to get the average
rmsAmplitude /= bufferSize;
amplitude = rmsAmplitude;
//don't update the pitch if the sound is very quiet
if( amplitude > 0.001 ){
//finally get the pitch of the sound
pitch = aubio_pitchdetection(pitch_output,in);
long int p=(int)pitch;
if (p!=0){
while(p>440){
p=p/2;
}
while(p<220){
p=p*2;
}
}
top_pitches[p]+=amplitude;
pitch_color=pitch_color.fromHsb(p-222,255, 255);
}
aubio_beattracking_do(tracker,in,beats);
}
int main(){
/* allocate some memory */
uint_t win_s = 1024; /* window size */
uint_t channels = 1; /* number of channel */
fvec_t * in = new_fvec (win_s, channels); /* input buffer */
fvec_t * out = new_fvec (win_s/4, channels); /* input buffer */
/* allocate fft and other memory space */
aubio_beattracking_t * tempo = new_aubio_beattracking(win_s, channels);
uint_t i = 0;
while (i < 10) {
aubio_beattracking_do(tempo,in,out);
i++;
};
del_aubio_beattracking(tempo);
del_fvec(in);
del_fvec(out);
aubio_cleanup();
return 0;
}
