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MIDIFile.h
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2005-03-14
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/*
ZynAddSubFX - a software synthesizer
MIDIFile.h - MIDI file loader
Copyright (C) 2003-2005 Nasca Octavian Paul
Author: Nasca Octavian Paul
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License
as published by the Free Software Foundation.
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 (version 2) for more details.
You should have received a copy of the GNU General Public License (version 2)
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef MIDIFILE_H
#define MIDIFILE_H
#include "../globals.h"
#include "MIDIEvents.h"
class MIDIFile{
public:
MIDIFile();
~MIDIFile();
//returns -1 if there is an error, otherwise 0
int loadfile(char *filename);
//returns -1 if there is an error, otherwise 0
int parsemidifile(MIDIEvents *me_);
private:
MIDIEvents *me;
unsigned char *midifile;
int midifilesize,midifilek;
bool midieof;
//returns -1 if there is an error, otherwise 0
int parsetrack(int ntrack);
void parsenoteoff(char ntrack,char chan,unsigned int dt);
void parsenoteon(char ntrack,char chan,unsigned int dt);
void parsecontrolchange(char ntrack,char chan,unsigned int dt);
void parsepitchwheel(char ntrack,char chan, unsigned int dt);
void parsemetaevent(unsigned char mtype,unsigned char mlength);
void add_dt(char ntrack, unsigned int dt);
void clearmidifile();
//convert the delta-time to internal format
unsigned int convertdt(unsigned int dt);
/* Low Level MIDIfile functions */
//get a byte from the midifile
unsigned char getbyte();
//peek the current byte from the midifile
unsigned char peekbyte();
//get a set of 4 bytes from the midifile
unsigned int getint32();
//get a word of 2 bytes from the midifile
unsigned short int getint16();
//read a variable length quantity
unsigned int getvarint32();
//skip some bytes
void skipnbytes(int n);
struct {
double tick;//how many seconds one tick has
}data;
};
#endif