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#ifndef __bb_h__
#define __bb_h__
#include <algorithm>
#include <vector>
#include <set>
#include <cstring>
#include <stdint.h>
#include <jack/jack.h>
typedef uint64_t superclock_t;
static const superclock_t superclock_ticks_per_second = 508032000; // 2^10 * 3^4 * 5^3 * 7^2
inline superclock_t superclock_to_samples (superclock_t s, int sr) { return (s * sr) / superclock_ticks_per_second; }
inline superclock_t samples_to_superclock (int samples, int sr) { return (samples * superclock_ticks_per_second) / sr; }
class BeatBox {
public:
BeatBox (int sample_rate);
~BeatBox ();
int register_ports (jack_client_t*);
int process (int nframes);
bool running() const { return _running || _start_requested; }
void start ();
void stop ();
void clear ();
void set_measure_count (int measures);
void set_meter (int beats, int beat_type);
void set_tempo (float bpm);
void set_quantize (int divisor);
float tempo() const { return _tempo; }
int meter_beats() const { return _meter_beats; }
int meter_beat_type() const { return _meter_beat_type; }
private:
bool _start_requested;
bool _running;
int _measures;
float _tempo;
float _tempo_request;
int _meter_beats;
int _meter_beat_type;
jack_port_t* _input;
jack_port_t* _output;
superclock_t superclock_cnt;
superclock_t last_start;
int _sample_rate;
superclock_t whole_note_superclocks;
superclock_t beat_superclocks;
superclock_t measure_superclocks;
int _quantize_divisor;
bool clear_pending;
struct Event {
superclock_t time;
superclock_t whole_note_superclocks;
size_t size;
unsigned char buf[24];
Event () : time (0), size (0) {}
Event (jack_nframes_t t, size_t sz, unsigned char* b) : time (t), size (sz) { memcpy (buf, b, std::min (sizeof (buf), sz)); }
Event (Event const & other) : time (other.time), size (other.size) { memcpy (buf, other.buf, other.size); }
};
struct EventComparator {
bool operator () (Event const * a, Event const * b) const;
};
typedef std::set<Event*,EventComparator> Events;
Events _current_events;
typedef std::vector<Event*> EventPool;
EventPool event_pool;
void compute_tempo_clocks ();
};
#endif /* __bb_h__ */
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