Zacharias-Brohn
60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
#include "beattracker.hpp"
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#include "audiocollector.hpp"
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#include "audioprovider.hpp"
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#include <aubio/aubio.h>
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namespace ZShell::services {
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BeatProcessor::BeatProcessor(QObject* parent)
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: AudioProcessor(parent)
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, m_tempo(new_aubio_tempo("default", 1024, ac::CHUNK_SIZE, ac::SAMPLE_RATE))
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, m_in(new_fvec(ac::CHUNK_SIZE))
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, m_out(new_fvec(2)) {
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};
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BeatProcessor::~BeatProcessor() {
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if (m_tempo) {
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del_aubio_tempo(m_tempo);
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}
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if (m_in) {
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del_fvec(m_in);
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}
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del_fvec(m_out);
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}
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void BeatProcessor::process() {
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if (!m_tempo || !m_in) {
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return;
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}
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AudioCollector::instance().readChunk(m_in->data);
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aubio_tempo_do(m_tempo, m_in, m_out);
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if (!qFuzzyIsNull(m_out->data[0])) {
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emit beat(aubio_tempo_get_bpm(m_tempo));
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}
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}
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BeatTracker::BeatTracker(QObject* parent)
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: AudioProvider(parent)
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, m_bpm(120) {
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m_processor = new BeatProcessor();
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init();
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connect(static_cast<BeatProcessor*>(m_processor), &BeatProcessor::beat, this, &BeatTracker::updateBpm);
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}
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smpl_t BeatTracker::bpm() const {
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return m_bpm;
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}
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void BeatTracker::updateBpm(smpl_t bpm) {
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if (!qFuzzyCompare(bpm + 1.0f, m_bpm + 1.0f)) {
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m_bpm = bpm;
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emit bpmChanged();
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}
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}
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} // namespace ZShell::services
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