stew

a monorepo of some sort
git clone git://git.nsmpr.xyz/stew.git
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midi.c (556B)

      1 #include <u.h>
      2 #include <libc.h>
      3 #include "midi.h"
      4 
      5 char *
      6 midifill(MidiMes *m, char *p, int)
      7 {
      8 	m->cn = p[0] >> 8;
      9 	m->cin = p[0] & 0x0f;
     10 	m->status = p[1] & 0xf0;
     11 	m->channel = p[1] & 0x0f;
     12 	m->param[0] = p[2];
     13 	m->param[1] = p[3];
     14 	return p + 4;
     15 }
     16 
     17 void
     18 midinoteon(char *p, int chan, int note, int velocity)
     19 {
     20 	p[0] = CIN_NoteOn;
     21 	p[1] = (chan & 0x0f) | (NOTE_ON);
     22 	p[2] = note;
     23 	p[3] = velocity;
     24 }
     25 
     26 void
     27 midinoteoff(char *p, int chan, int note, int velocity)
     28 {
     29 	p[0] = CIN_NoteOff;
     30 	p[1] = (chan & 0x0f) | (NOTE_OFF);
     31 	p[2] = note;
     32 	p[3] = velocity;
     33 }