mirror of
https://github.com/cookiengineer/audacity
synced 2025-11-04 08:04:06 +01:00
99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
#define NOTEOFF 0x80
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#define NOTEON 0x90
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#define PRESSURE 0xa0
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#define CONTROLLER 0xb0
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#define PITCHBEND 0xe0
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#define PROGRAM 0xc0
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#define CHANPRESSURE 0xd0
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/* These are the strings used in keynote to identify Standard MIDI File */
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/* meta text messages. */
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#define METATEXT "Text Event"
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#define METACOPYRIGHT "Copyright Notice"
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#define METASEQUENCE "Sequence/Track Name"
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#define METAINSTRUMENT "Instrument Name"
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#define METALYRIC "Lyric"
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#define METAMARKER "Marker"
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#define METACUE "Cue Point"
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#define METAUNRECOGNIZED "Unrecognized"
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class Midifile_reader {
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public:
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void midifile();
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int Mf_nomerge; /* 1 => continue'ed system exclusives are */
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/* not collapsed. */
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long Mf_currtime; /* current time in delta-time units */
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int Mf_skipinit; /* 1 if initial garbage should be skipped */
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Midifile_reader();
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// call finalize() when done or you may leak memory.
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void finalize(); /* clean up before deletion */
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// Note: rather than finalize, we should have ~Midifile_reader(),
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// but at least VC++ complains that there is no Mf_free(), even
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// though Mf_free is declared as virtual and this is an abstract
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// class. I don't understand this, so finalize() is a workaround. -RBD
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protected:
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int midifile_error;
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virtual void *Mf_malloc(size_t size) = 0; /* malloc() */
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virtual void Mf_free(void *obj, size_t size) = 0; /* free() */
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/* Methods to be called while processing the MIDI file. */
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virtual void Mf_starttrack() = 0;
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virtual void Mf_endtrack() = 0;
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virtual int Mf_getc() = 0;
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virtual void Mf_chanprefix(int) = 0;
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virtual void Mf_portprefix(int) = 0;
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virtual void Mf_eot() = 0;
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virtual void Mf_error(char *) = 0;
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virtual void Mf_header(int,int,int) = 0;
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virtual void Mf_on(int,int,int) = 0;
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virtual void Mf_off(int,int,int) = 0;
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virtual void Mf_pressure(int,int,int) = 0;
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virtual void Mf_controller(int,int,int) = 0;
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virtual void Mf_pitchbend(int,int,int) = 0;
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virtual void Mf_program(int,int) = 0;
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virtual void Mf_chanpressure(int,int) = 0;
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virtual void Mf_sysex(int,unsigned char*) = 0;
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virtual void Mf_arbitrary(int,unsigned char*) = 0;
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virtual void Mf_metamisc(int,int,unsigned char*) = 0;
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virtual void Mf_seqnum(int) = 0;
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virtual void Mf_smpte(int,int,int,int,int) = 0;
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virtual void Mf_timesig(int,int,int,int) = 0;
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virtual void Mf_tempo(int) = 0;
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virtual void Mf_keysig(int,int) = 0;
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virtual void Mf_sqspecific(int,unsigned char*) = 0;
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virtual void Mf_text(int,int,unsigned char*) = 0;
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private:
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long Mf_toberead;
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long readvarinum();
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long read32bit();
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int read16bit();
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void msgenlarge();
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unsigned char *msg();
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int readheader();
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void readtrack();
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void sysex();
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void msginit();
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int egetc();
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int msgleng();
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int readmt(char*,int);
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long to32bit(int,int,int,int);
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int to16bit(int,int);
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void mferror(char *);
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void badbyte(int);
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void metaevent(int);
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void msgadd(int);
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void chanmessage(int,int,int);
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unsigned char *Msgbuff;
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long Msgsize;
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long Msgindex;
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};
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