1f9ccfcdce
git-subtree-dir: libmscore git-subtree-mainline:412ca45401git-subtree-split:6047361bd0
134 lines
4.1 KiB
C++
134 lines
4.1 KiB
C++
//=============================================================================
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// AL
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// Audio Utility Library
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// $Id:$
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//
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// Copyright (C) 2002-2009 by Werner Schweer and others
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//=============================================================================
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#ifndef __POS_H__
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#define __POS_H__
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#include "sig.h"
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class TempoMap;
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class TimeSigMap;
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class Xml;
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enum TType { TICKS, FRAMES };
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//---------------------------------------------------------
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// Pos
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// depending on type _tick or _frame is a cached
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// value. When the tempomap changes, all cached values
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// are invalid. Sn is used to check for tempomap
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// changes.
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//---------------------------------------------------------
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class Pos {
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TType _type;
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bool _valid;
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mutable int sn;
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mutable unsigned _tick;
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mutable unsigned _frame;
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protected:
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TempoMap* tempo;
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TimeSigMap* sig;
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public:
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Pos();
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Pos(TempoMap*, TimeSigMap*);
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Pos(TempoMap*, TimeSigMap*, int measure, int beat, int tick);
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Pos(TempoMap*, TimeSigMap*, int minute, int sec, int frame, int subframe);
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Pos(TempoMap*, TimeSigMap*, unsigned, TType type = TICKS);
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Pos(TempoMap*, TimeSigMap*, const QString&);
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void setContext(TempoMap* t, TimeSigMap* s) { tempo = t; sig = s; }
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void dump(int n = 0) const;
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unsigned time(TType t) const { return t == TICKS ? tick() : frame(); }
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void mbt(int* measure, int* beat, int* tick) const;
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void msf(int* minute, int* sec, int* frame, int* subframe) const;
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SigEvent timesig() const;
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void snap(int);
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void upSnap(int);
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void downSnap(int);
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Pos snaped(int) const;
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Pos upSnaped(int) const;
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Pos downSnaped(int) const;
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void invalidSn() { sn = -1; }
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TType type() const { return _type; }
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void setType(TType t);
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Pos& operator+=(const Pos& a);
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Pos& operator+=(int a);
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Pos& operator-=(const Pos& a);
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Pos& operator-=(int a);
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bool operator>=(const Pos& s) const;
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bool operator>(const Pos& s) const;
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bool operator<(const Pos& s) const;
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bool operator<=(const Pos& s) const;
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bool operator==(const Pos& s) const;
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bool operator!=(const Pos& s) const;
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friend Pos operator+(const Pos& a, const Pos& b);
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friend Pos operator-(const Pos& a, const Pos& b);
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friend Pos operator+(const Pos& a, int b);
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friend Pos operator-(const Pos& a, int b);
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unsigned tick() const;
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unsigned frame() const;
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void setTick(unsigned);
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void setFrame(unsigned);
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void write(Xml&, const char*) const;
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void read(QDomNode);
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bool valid() const { return _valid && tempo && sig; }
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void setInvalid() { _valid = false; }
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};
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//---------------------------------------------------------
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// PosLen
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//---------------------------------------------------------
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class PosLen : public Pos {
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mutable unsigned _lenTick;
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mutable unsigned _lenFrame;
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mutable int sn;
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public:
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PosLen(TempoMap*, TimeSigMap*);
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PosLen(const PosLen&);
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void dump(int n = 0) const;
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void write(Xml&, const char*) const;
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void read(QDomNode);
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void setLenTick(unsigned);
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void setLenFrame(unsigned);
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unsigned lenTick() const;
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unsigned lenFrame() const;
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Pos end() const;
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unsigned endTick() const { return end().tick(); }
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unsigned endFrame() const { return end().frame(); }
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void setPos(const Pos&);
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bool operator==(const PosLen& s) const;
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};
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#endif
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