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//=========================================================
// MusE
// Linux Music Editor
// $Id: tempo.h,v 1.2.2.1 2006/09/19 19:07:09 spamatica Exp $
//
// (C) Copyright 1999/2000 Werner Schweer (ws@seh.de)
//=========================================================
#ifndef __TEMPO_H__
#define __TEMPO_H__
#include <map>
#ifndef MAX_TICK
#define MAX_TICK (0x7fffffff/100)
#endif
class Xml;
//---------------------------------------------------------
// Tempo Event
//---------------------------------------------------------
struct TEvent {
int tempo;
unsigned tick; // new tempo at tick
unsigned frame; // precomputed time for tick in sec
int read(Xml&);
void write(int, Xml&, int) const;
TEvent() { }
TEvent(unsigned t, unsigned tk) {
tempo = t;
tick = tk;
frame = 0;
}
};
//---------------------------------------------------------
// TempoList
//---------------------------------------------------------
typedef std::map<unsigned, TEvent*, std::less<unsigned> > TEMPOLIST;
typedef TEMPOLIST::iterator iTEvent;
typedef TEMPOLIST::const_iterator ciTEvent;
typedef TEMPOLIST::reverse_iterator riTEvent;
typedef TEMPOLIST::const_reverse_iterator criTEvent;
class TempoList : public TEMPOLIST {
int _tempoSN; // serial no to track tempo changes
bool useList;
int _tempo; // tempo if not using tempo list
int _globalTempo; // %percent 50-200%
void normalize();
void add(unsigned tick, int tempo);
void change(unsigned tick, int newTempo);
void del(iTEvent);
void del(unsigned tick);
public:
TempoList();
void clear();
void read(Xml&);
void write(int, Xml&) const;
void dump() const;
int tempo(unsigned tick) const;
unsigned tick2frame(unsigned tick, unsigned frame, int* sn) const;
unsigned tick2frame(unsigned tick, int* sn = 0) const;
unsigned frame2tick(unsigned frame, int* sn = 0) const;
unsigned frame2tick(unsigned frame, unsigned tick, int* sn) const;
unsigned deltaTick2frame(unsigned tick1, unsigned tick2, int* sn = 0) const;
unsigned deltaFrame2tick(unsigned frame1, unsigned frame2, int* sn = 0) const;
int tempoSN() const { return _tempoSN; }
void setTempo(unsigned tick, int newTempo);
void addTempo(unsigned t, int tempo);
void delTempo(unsigned tick);
void changeTempo(unsigned tick, int newTempo);
bool setMasterFlag(unsigned tick, bool val);
int globalTempo() const { return _globalTempo; }
void setGlobalTempo(int val);
};
extern TempoList tempomap;
#endif
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