403 lines
13 KiB
C++
403 lines
13 KiB
C++
#ifndef __MIDIIO__
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#define __MIDIIO__
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#include <stdio.h>
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#ifndef MIDI_BUFSIZE
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#define MIDI_BUFSIZE 1024
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#endif
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// opening modes of a midi file
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#define WRITE_BINARY "wb"
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#define READ_BINARY "rb"
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const unsigned long MThd = 0x4D546864ul;
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const unsigned long MTrk = 0x4D54726Bul;
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// different standard midi formats
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#define VERSION_MULTICHANNEL 0
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#define VERSION_SINGLECHANNEL 1
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#define VERSION_MULTISONG 2
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#define OPTION_NOCONTROLS 1 // no control details but general information
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#define OPTION_NOEVENTS 2 // no track events at all
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#define OPTION_NOMETAEVENTS 4 // no meta details but general information
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#define OPTION_NOSYSEVENTS 8 // no sysex details but general information
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#define OPTION_NONOTEEVENTS 16 // no note events (8x or 9x)
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#define OPTION_NOPOLYEVENTS 32 // no poly aftertouch events (Ax)
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#define OPTION_NOCONTROLEVENTS 64 // no control events at all (Bx)
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#define OPTION_NOPROGRAMEVENTS 128 // no program change events (Cx)
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#define OPTION_NOAFTERTOUCHEVENTS 256 // no aftertouch events (Dx)
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#define OPTION_NOPITCHBENDEVENTS 512 // no pitchbend events (Ex)
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#define OPTION_NOREALTIMEEVENTS 1024 // no realtime events (Fx)
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// getchannel delivers a valid channel or:
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#define NOCHANNEL (-1)
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#define MULTICHANNEL (-2)
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#define VALIDCHANNEL(ch) ((ch) >= 0 && (ch) <= 15)
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#define gm_drumchannel 9
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#define SAYCHANNEL(ch) ((ch) + 1) // 0..15 in midi format but spoken 1..16!
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// for use of param what in function text()
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#define meta_text 1
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#define meta_copyright 2
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#define meta_trackname 3
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#define meta_instrument 4
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#define meta_lyric 5
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#define meta_marker 6
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#define meta_cuepoint 7
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#define meta_endtrack 0x2f
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#define ctrl_highbank 0
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#define ctrl_wheel 1
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#define ctrl_breath 2
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#define ctrl_foot 4
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#define ctrl_portamentotime 5
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#define ctrl_data 6
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#define ctrl_volume 7
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#define ctrl_balance 10
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#define ctrl_expression 11
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#define ctrl_lowbank 32
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#define ctrl_hold 64
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#define ctrl_reverb 91
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#define ctrl_chorus 93
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#define ctrl_datainc 96
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#define ctrl_datadec 97
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#define ctrl_lowrpn 100
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#define ctrl_highrpn 101
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#define ctrl_resetctrlrs 121
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#define ctrl_allnotesoff 123
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#define balance_left 0
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#define balance_center 64
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#define balance_right 127
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#define volume_mute 0
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#define volume_full 127
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#define bpm(ticks) (60000000.0 / (ticks))
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#define ticks(beats) ((unsigned long)(60000000.0 / (beats)))
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#define tempo_60bpm (1000000L)
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#define tempo_120bpm (500000L)
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#define tempo_240bpm (250000L)
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class MidiRead
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{
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public:
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static const char* copyright();
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MidiRead(const char* filename, FILE* f = 0);
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virtual ~MidiRead();
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FILE* getf();
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int run();
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int runhead();
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int runtrack(int trackno);
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int runevent(long trackend);
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long getpos() { return pos_; }
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long geteventpos() { return pos_; }
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long getcurpos() { return curpos_; }
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unsigned long getcurtime() { return curtime_; } // in midi units
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virtual void head(unsigned version, unsigned tracks, unsigned clicksperquarter);
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virtual void track(int trackno, long length, int channel);
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virtual void endtrack(int trackno); // closing track
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virtual void time(unsigned long ticks); // delay between events
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virtual void event(int what, int len = 0, unsigned char* data = 0);
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// these are event categories:
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virtual void meta(int what, int len, const unsigned char* data);
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// these are special meta events:
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virtual void text(int what, int len, const char* whattext, const unsigned char* txt);
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virtual void end(); // end of track command
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virtual void prefixchannel(unsigned char channel);
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virtual void prefixport(unsigned char port);
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virtual void seqnumber(unsigned int seqno);
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virtual void smpteofs(int hour, int min, int sec, int frame, int fracframe);
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virtual void tact(int nom, int denom, int clicksperbeat, int notes32perbeat);
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virtual void tempo(unsigned long microsecperbeat);
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virtual void key(int signature, int isminor); // C=0, -7=7flats +7=7sharps
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virtual void program(int channel, int prg);
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virtual void control(int channel, int what, int val); // general controls
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// special controls:
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virtual void highbank(int channel, int val);
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virtual void wheel(int channel, int val);
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virtual void breath(int channel, int val);
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virtual void foot(int channel, int val);
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virtual void portamentotime(int channel, int val);
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virtual void data(int channel, int val);
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virtual void volume(int channel, int val);
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virtual void balance(int channel, int val);
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virtual void expression(int channel, int val);
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virtual void lowbank(int channel, int val);
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virtual void hold(int channel, int val);
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virtual void reverb(int channel, int val);
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virtual void chorus(int channel, int val);
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virtual void datainc(int channel, int val);
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virtual void datadec(int channel, int val);
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virtual void lowrpn(int channel, int val);
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virtual void highrpn(int channel, int val);
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virtual void resetctrlrs(int channel, int val);
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virtual void allnotesoff(int channel, int val);
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virtual void pitchbendrange(int channel, int val);
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virtual void noteon(int channel, int note, int vel);
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virtual void noteoff(int channel, int note, int vel);
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virtual void pitchbend(int channel, int val);
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virtual void polyaftertouch(int channel, int note, int val);
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virtual void aftertouch(int channel, int val);
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virtual void songpos(unsigned pos);
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virtual void songselect(unsigned char song);
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virtual void tunerequest();
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virtual void timingclock();
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virtual void start();
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virtual void cont();
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virtual void stop();
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virtual void activesense();
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virtual void sysex(int syslen, const unsigned char* sysdata);
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// these are special sysex events:
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virtual void xgreset();
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virtual void gmreset();
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virtual void gsreset();
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virtual void gsexit();
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virtual void endmidi(); // after last track
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virtual void error(const char* msg);
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virtual void warning(const char* msg);
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virtual void percent(int perc);
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int getchannel() { return curchannel_; }
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void setchannel(int channel);
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static const char* progname(int n, int channel);
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static const char* notename(unsigned char note);
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int options_;
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int version_, tracks_, clicks_, trackno_;
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void seek(long pos);
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int getbyte();
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unsigned getword();
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unsigned long gettri();
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unsigned long getlong();
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unsigned long getdelta();
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unsigned char* get(int len);
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unsigned char* need(int nbytes);
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unsigned long microsec(unsigned long units, unsigned long msperbeats);
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long units(unsigned long microsec, unsigned long msperbeats);
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// use scanchannel only at start of track!
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int scanchannel(unsigned long maxlen); // channel 0-15 or -1=no channel or -2=multichannels
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// use sysevent only directly after reading F0 or F7
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int scansysevent(unsigned long maxlen);
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protected:
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const char *midiname_;
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FILE* f_;
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unsigned char shouldclose_; // 0=no, otherwise=yes
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long filesize_;
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unsigned char buf_[MIDI_BUFSIZE];
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int buflen_, bufpos_;
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int curchannel_;
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unsigned long curtime_;
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int percent_;
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int lastcode_;
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unsigned long tracklen_;
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long pos_, curpos_;
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unsigned char curdeltalen_; // number of bytes read by recent getdelta() call
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};
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class MidiWrite
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{
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public:
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static const char* copyright();
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MidiWrite(const char* filename);
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virtual ~MidiWrite();
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FILE* getf();
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long getcurpos() { return curpos_; }
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long getcurtime() { return curtime_; }
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void cleardelta();
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void head(int version = 1, int tracks = 0, unsigned clicksperquarter = 192);
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void track();
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void endtrack();
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void event(int what, int len, const unsigned char* data);
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void text(int what, int len, const unsigned char* txt);
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void meta(int what, int len, const unsigned char* data); // 0xff ....
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virtual void prefixchannel(unsigned char channel);
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virtual void prefixport(unsigned char port);
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virtual void seqnumber(unsigned int seqno);
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virtual void smpteofs(int hour, int min, int sec, int frame, int fracframe);
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virtual void key(int signature, int isminor);
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void tact(int nom, int denom, int v1, int v2);
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void tempo(unsigned long microsecperbeat);
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void end();
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void program(int channel, int prg);
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void control(int channel, int what, int val);
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// these are special controls
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void highbank(int channel, int val);
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void wheel(int channel, int val);
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void breath(int channel, int val);
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void foot(int channel, int val);
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void portamentotime(int channel, int val);
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void data(int channel, int val);
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void volume(int channel, int val);
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void balance(int channel, int val);
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void expression(int channel, int val);
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void lowbank(int channel, int val);
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void hold(int channel, int val);
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void reverb(int channel, int val);
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void chorus(int channel, int val);
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void datainc(int channel, int val);
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void datadec(int channel, int val);
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void lowrpn(int channel, int val);
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void highrpn(int channel, int val);
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void resetctrlrs(int channel, int val);
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void allnotesoff(int channel, int val);
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void pitchbendrange(int channel, int halfnotes);
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void noteon(int channel, int note, int vel);
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void noteoff(int channel, int note, int vel = 0);
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void time(unsigned long ticks);
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void pitchbend(int channel, int val);
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void polyaftertouch(int channel, int note, int val);
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void aftertouch(int channel, int val);
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void songpos(unsigned pos);
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void songselect(unsigned char song);
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void tunerequest();
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void timingclock();
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void start();
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void cont();
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void stop();
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void activesense();
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void sysex(int syslen, const unsigned char* sysdata);
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void xgreset();
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void gmreset();
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void gsreset();
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void gsexit();
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void putbyte(unsigned char val);
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void putcode(unsigned char code);
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void putword(unsigned val);
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void puttri(unsigned long val);
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void putlong(unsigned long val);
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void putdelta(unsigned long val);
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void puttime();
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void put(int len, const unsigned char* c);
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void seek(long pos);
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virtual void error(const char* msg);
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virtual void warning(const char* msg);
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int unitsperquarter();
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protected:
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const char *midiname_;
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FILE* f_;
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long trackpos_, curpos_, filesize_;
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int trackchannel_, trackcount_, lastcode_, endtrack_;
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unsigned char buf_[MIDI_BUFSIZE];
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int bufpos_, buflen_;
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unsigned long curdelta_;
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unsigned long curtime_;
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int clicks_;
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void flush();
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};
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class MidiCopy : public MidiRead
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{
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public:
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MidiCopy(const char* filename, FILE* f = 0);
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void setoutput(MidiWrite* dest);
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void stopoutput();
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MidiWrite* getoutput();
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void mapchannel(int channel, int newchannel);
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void ignorechannel(int channel);
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virtual void head(unsigned version, unsigned tracks, unsigned clicksperquarter);
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virtual void track(int trackno, long length, int channel);
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virtual void endtrack(int trackno);
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virtual void time(unsigned long ticks);
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virtual void event(int what, int len = 0, unsigned char* data = 0);
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virtual void meta(int what, int len, unsigned char* data);
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virtual void text(int what, int len, char* whattext, unsigned char* txt);
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virtual void end();
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virtual void prefixchannel(unsigned char channel);
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virtual void prefixport(unsigned char port);
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virtual void seqnumber(unsigned int seqno);
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virtual void smpteofs(int hour, int min, int sec, int frame, int fracframe);
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virtual void tact(int nom, int denom, int clicksperbeat, int notes32perbeat);
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virtual void tempo(unsigned long microsecperbeat);
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virtual void key(int signature, int isminor); // C=0, -7=7flats +7=7sharps
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virtual void program(int channel, int prg);
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virtual void control(int channel, int what, int val);
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virtual void highbank(int channel, int val);
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virtual void wheel(int channel, int val);
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virtual void breath(int channel, int val);
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virtual void foot(int channel, int val);
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virtual void portamentotime(int channel, int val);
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virtual void data(int channel, int val);
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virtual void volume(int channel, int val);
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virtual void balance(int channel, int val);
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virtual void expression(int channel, int val);
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virtual void lowbank(int channel, int val);
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virtual void hold(int channel, int val);
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virtual void reverb(int channel, int val);
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virtual void chorus(int channel, int val);
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virtual void datainc(int channel, int val);
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virtual void datadec(int channel, int val);
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virtual void lowrpn(int channel, int val);
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virtual void highrpn(int channel, int val);
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virtual void resetctrlrs(int channel, int val);
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virtual void allnotesoff(int channel, int val);
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virtual void noteon(int channel, int note, int vel);
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virtual void noteoff(int channel, int note, int vel);
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virtual void pitchbend(int channel, int val);
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virtual void polyaftertouch(int channel, int note, int val);
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virtual void aftertouch(int channel, int val);
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virtual void songpos(unsigned pos);
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virtual void songselect(unsigned char song);
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virtual void tunerequest();
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virtual void timingclock();
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virtual void start();
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virtual void cont();
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virtual void stop();
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virtual void activesense();
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virtual void sysex(int syslen, unsigned char* sysdata);
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virtual void gmreset();
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virtual void gsreset();
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virtual void gsexit();
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virtual void xgreset();
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protected:
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MidiWrite* dest_;
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int mapchannel_[16]; // channel 0-15 or events are ignored for invalid channel
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};
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#endif
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