1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
#include "beattracker.hpp"
#include "audiocollector.hpp"
#include "audioprovider.hpp"
#include <QObject>
#include <aubio/aubio.h>
namespace caelestia {
BeatProcessor::BeatProcessor(QObject* parent)
: AudioProcessor(parent)
, m_tempo(new_aubio_tempo("default", 1024, m_chunkSize, m_sampleRate))
, m_in(new_fvec(m_chunkSize))
, m_out(new_fvec(2)) {};
BeatProcessor::~BeatProcessor() {
del_aubio_tempo(m_tempo);
del_fvec(m_in);
del_fvec(m_out);
}
void BeatProcessor::process() {
AudioCollector::instance()->readChunk(m_in->data, m_chunkSize);
aubio_tempo_do(m_tempo, m_in, m_out);
if (m_out->data[0] != 0.0f) {
emit beat(aubio_tempo_get_bpm(m_tempo));
}
}
BeatTracker::BeatTracker(QObject* parent)
: AudioProvider(parent)
, m_bpm(120) {
m_processor = new BeatProcessor();
init();
connect(static_cast<BeatProcessor*>(m_processor), &BeatProcessor::beat, this, &BeatTracker::updateBpm);
}
smpl_t BeatTracker::bpm() const {
return m_bpm;
}
void BeatTracker::updateBpm(smpl_t bpm) {
if (!qFuzzyCompare(bpm + 1.0f, m_bpm + 1.0f)) {
m_bpm = bpm;
emit bpmChanged();
}
}
} // namespace caelestia
|
