1 files changed, 101 insertions, 0 deletions
diff --git a/muse_qt4_evolution/al/tempo.h b/muse_qt4_evolution/al/tempo.h
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+++ b/muse_qt4_evolution/al/tempo.h
@@ -0,0 +1,101 @@
+//=============================================================================
+//  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
+