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+//=============================================================================
+// AL
+// Audio Utility Library
+// $Id:$
+//
+// Copyright (C) 2002-2006 by Werner Schweer and others
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2.
+//
+// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+//=============================================================================
+
+#ifndef __TEMPO_H__
+#define __TEMPO_H__
+
+namespace AL {
+
+#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(QDomNode);
+ void write(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(QDomNode);
+ void write(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;
+ 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
+