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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)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; version 2 of
// the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//=========================================================
#ifndef __TEMPO_H__
#define __TEMPO_H__
#include <map>
#include <vector>
#ifndef MAX_TICK
#define MAX_TICK (0x7fffffff/100)
#endif
// Tempo ring buffer size
#define TEMPO_FIFO_SIZE 1024
namespace MusECore {
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 add(unsigned tick, int tempo, bool do_normalize = true);
void change(unsigned tick, int newTempo);
void del(iTEvent);
void del(unsigned tick);
public:
TempoList();
~TempoList();
void normalize();
void clear();
void eraseRange(unsigned stick, unsigned etick);
void read(Xml&);
void write(int, Xml&) const;
void dump() const;
int tempo(unsigned tick) const;
int tempoAt(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, bool do_normalize = true);
void delTempo(unsigned tick);
void changeTempo(unsigned tick, int newTempo);
bool masterFlag() const { return useList; }
bool setMasterFlag(unsigned tick, bool val);
int globalTempo() const { return _globalTempo; }
void setGlobalTempo(int val);
};
//---------------------------------------------------------
// Tempo Record Event
//---------------------------------------------------------
struct TempoRecEvent {
int tempo;
unsigned tick;
TempoRecEvent() { }
TempoRecEvent(unsigned tk, unsigned t) {
tick = tk;
tempo = t;
}
};
class TempoRecList : public std::vector<TempoRecEvent >
{
public:
void addTempo(int tick, int tempo) { push_back(TempoRecEvent(tick, tempo)); }
void addTempo(const TempoRecEvent& e) { push_back(e); }
};
//---------------------------------------------------------
// TempoFifo
//---------------------------------------------------------
class TempoFifo {
TempoRecEvent fifo[TEMPO_FIFO_SIZE];
volatile int size;
int wIndex;
int rIndex;
public:
TempoFifo() { clear(); }
bool put(const TempoRecEvent& event); // returns true on fifo overflow
TempoRecEvent get();
const TempoRecEvent& peek(int = 0);
void remove();
bool isEmpty() const { return size == 0; }
void clear() { size = 0, wIndex = 0, rIndex = 0; }
int getSize() const { return size; }
};
} // namespace MusECore
namespace MusEGlobal {
extern MusECore::TempoList tempomap;
extern MusECore::TempoRecList tempo_rec_list;
}
#endif
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