//=========================================================
//  MusE
//  Linux Music Editor
//  $Id: sig.h,v 1.2 2004/01/11 18:55:34 wschweer Exp $
//
//  (C) Copyright 2000 Werner Schweer (ws@seh.de)
//=========================================================

#ifndef __SIG_H__
#define __SIG_H__

#include <map>

#ifndef MAX_TICK
#define MAX_TICK (0x7fffffff/100)
#endif

class Xml;

//---------------------------------------------------------
//   Signature Event
//---------------------------------------------------------

struct SigEvent {
      int z, n;            // takt signatur
      unsigned tick;       // ab dieser Position gilt signatur
      int bar;             // precomputed

      int read(Xml&);
      void write(int, Xml&, int) const;

      SigEvent() { }
      SigEvent(int Z, int N, unsigned tk) {
            z = Z;
            n = N;
            tick = tk;
            bar = 0;
            }
      };

//---------------------------------------------------------
//   SigList
//---------------------------------------------------------

typedef std::map<unsigned, SigEvent*, std::less<unsigned> > SIGLIST;
typedef SIGLIST::iterator iSigEvent;
typedef SIGLIST::const_iterator ciSigEvent;
typedef SIGLIST::reverse_iterator riSigEvent;
typedef SIGLIST::const_reverse_iterator criSigEvent;

class SigList : public SIGLIST {
      int ticks_beat(int N) const;
      void normalize();
      int ticksMeasure(int z, int n) const;

   public:
      SigList();
      void clear();
      void add(unsigned tick, int z, int n);
      void del(unsigned tick);

      void read(Xml&);
      void write(int, Xml&) const;
      void dump() const;

      void timesig(unsigned tick, int& z, int& n) const;
      void tickValues(unsigned t, int* bar, int* beat, unsigned* tick) const;
      unsigned bar2tick(int bar, int beat, unsigned tick) const;

      int ticksMeasure(unsigned tick) const;
      int ticksBeat(unsigned tick) const;
      unsigned raster(unsigned tick, int raster) const;
      unsigned raster1(unsigned tick, int raster) const;
      unsigned raster2(unsigned tick, int raster) const;
      int rasterStep(unsigned tick, int raster) const;
      };

extern SigList sigmap;
#endif
