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/* notearray.h - NoteArray class, which holds an array of notes
This file is part of LibKMid 0.9.5
Copyright (C) 1998,99,2000 Antonio Larrosa Jimenez
LibKMid's homepage : http://www.arrakis.es/~rlarrosa/libkmid.html
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
Send comments and bug fixes to Antonio Larrosa <larrosa@kde.org>
***************************************************************************/
#ifndef NOTEARRAY_H
#define NOTEARRAY_H
#include <libkmid/dattypes.h>
#include <kdelibs_export.h>
/**
* Holds a resizeable array of note on/off and patch change events. It can
* increase it size, but it doesn't decreases (until destruction :-) )
*
* @short Stores an array of note on/off events
* @version 0.9.5 17/01/2000
* @author Antonio Larrosa Jimenez <larrosa@kde.org>
*/
class KMID_EXPORT NoteArray
{
private:
class NoteArrayPrivate;
NoteArrayPrivate *d;
public:
struct noteCmd {
/**
* ms from beginning of song
*/
ulong ms;
/**
* The channel
*/
int chn;
/**
* 0 note off, 1 note on, 2 change patch
*/
int cmd;
/**
* The note.
*
* If cmd==2, then the patch is stored in "note"
*/
int note;
};
private:
noteCmd *data;
ulong totalAllocated;
ulong last;
noteCmd *lastAdded;
/**
* @internal
* The iterator
*/
noteCmd *it;
noteCmd *pointerTo(ulong pos);
public:
/**
* Constructor. Initializes internal variables.
*/
NoteArray(void);
/**
* Destructor.
*/
~NoteArray();
/**
* Adds (or modifies) an event in the given position .
*
* Note that this has nothing to do with what is being played, this just
* modifies an internal array.
*/
void at(ulong pos, ulong ms,int chn,int cmd,int note);
/**
* A convenience function, which differs from the above in the parameters
* it accepts.
*/
void at(ulong pos, noteCmd s);
/**
* Returns the note event at a given position.
*/
noteCmd at(int pos);
/**
* Adds a note/patch event at a given millisecond.
*
* Note: This method always appends at the end of the list.
*/
void add(ulong ms,int chn,int cmd,int note);
/**
* Initializes the iterator.
*
* @see get()
* @see next()
*/
void iteratorBegin(void) { it=data; }
/**
* Get the command currently pointed to by the iterator.
*/
noteCmd *get(void) { return it; }
/**
* Advances the iterator to the next position.
*/
void next(void);
/**
* Calls next() until the next event is over ms milliseconds
* and puts in @p pgm[16] the instruments used at this moment.
*/
void moveIteratorTo(ulong ms,int *pgm=NULL);
};
#endif
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