nixo
/
midizap
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Make negative step sizes work on output in data mode, and also with pb in key mode.

master
Albert Graef 2018-08-19 22:50:45 +02:00
parent 94f59441cd
commit 52fa84bf12
2 changed files with 27 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
midizap.c
View File

@ -67,6 +67,16 @@ static int16_t pbvalue[16] =
{8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192,
8192, 8192, 8192, 8192, 8192, 8192, 8192, 8192};
static int dataval(int val, int min, int max)
{
if (!val || val > max)
return max;
else if (val < min)
return min;
else
return val;
}
void
send_midi(uint8_t portno, int status, int data, int step, int incr, int index, int dir)
{
@ -78,8 +88,7 @@ send_midi(uint8_t portno, int status, int data, int step, int incr, int index, i
switch (status & 0xf0) {
case 0x90:
if (!index) {
msg[2] = step?step:127;
if (msg[2] > 127) msg[2] = 127;
msg[2] = dataval(step, 0, 127);
} else {
msg[2] = 0;
}
@ -110,8 +119,7 @@ send_midi(uint8_t portno, int status, int data, int step, int incr, int index, i
msg[2] = ccvalue[chan][data];
}
} else if (!index) {
msg[2] = step?step:127;
if (msg[2] > 127) msg[2] = 127;
msg[2] = dataval(step, 0, 127);
} else {
msg[2] = 0;
}
@ -133,8 +141,7 @@ send_midi(uint8_t portno, int status, int data, int step, int incr, int index, i
}
msg[2] = kpvalue[chan][data];
} else if (!index) {
msg[2] = step?step:127;
if (msg[2] > 127) msg[2] = 127;
msg[2] = dataval(step, 0, 127);
} else {
msg[2] = 0;
}
@ -156,8 +163,7 @@ send_midi(uint8_t portno, int status, int data, int step, int incr, int index, i
}
msg[1] = cpvalue[chan];
} else if (!index) {
msg[1] = step?step:127;
if (msg[1] > 127) msg[1] = 127;
msg[1] = dataval(step, 0, 127);
} else {
msg[1] = 0;
}
@ -180,8 +186,7 @@ send_midi(uint8_t portno, int status, int data, int step, int incr, int index, i
}
pbval = pbvalue[chan];
} else if (!index) {
pbval = 8192+(step?step:8191);
if (pbval > 16383) pbval = 16383;
pbval = 8192+dataval(step, -8192, 8191);
} else {
// we use 8192 (center) as the "home" (a.k.a. "off") value, so the pitch
// will only bend up, never down below the center value

14
readconfig.c
View File

@ -826,7 +826,7 @@ parse_midi(char *tok, char *s, int lhs, int mode,
// step size
if (*p == '[') {
if (sscanf(++p, "%d%n", &l, &n) == 1) {
if (l <= 0) return 0; // must be positive
if (!l || (lhs && l<0)) return 0; // must be nonzero / positive on lhs
p += n;
if (*p != ']') return 0;
p++;
@ -892,6 +892,7 @@ parse_midi(char *tok, char *s, int lhs, int mode,
} else if (strcmp(s, "pb") == 0) {
// pitch bend, no data byte
*status = 0xe0 | k; *data = 0;
// negative step size is always permitted on rhs here, even in key mode
// step size only permitted on lhs if incremental
if (lhs && *step && !*incr) return 0;
if (lhs && !*step) *step = 1; // default
@ -899,6 +900,8 @@ parse_midi(char *tok, char *s, int lhs, int mode,
} else if (strcmp(s, "cp") == 0) {
// channel pressure, no data byte
*status = 0xd0 | k; *data = 0;
// negative step size not permitted on rhs in key mode
if (!lhs && *step < 0 && !mode) return 0;
// step size only permitted on lhs if incremental
if (lhs && *step && !*incr) return 0;
if (lhs && !*step) *step = 1; // default
@ -913,6 +916,8 @@ parse_midi(char *tok, char *s, int lhs, int mode,
// control change
if (m < 0 || m > 127) return 0;
*status = 0xb0 | k; *data = m;
// negative step size not permitted on rhs in key mode
if (!lhs && *step < 0 && !mode) return 0;
// step size only permitted on lhs if incremental
if (lhs && *step && !*incr) return 0;
if (lhs && !*step) *step = 1; // default
@ -921,12 +926,17 @@ parse_midi(char *tok, char *s, int lhs, int mode,
// key pressure
if (m < 0 || m > 127) return 0;
*status = 0xa0 | k; *data = m;
// negative step size not permitted on rhs in key mode
if (!lhs && *step < 0 && !mode) return 0;
// step size only permitted on lhs if incremental
if (lhs && *step && !*incr) return 0;
if (lhs && !*step) *step = 1; // default
return 1;
} else {
if (lhs && *step) return 0; // step size not permitted on lhs
// negative step size not permitted on rhs
if (!lhs && *step < 0) return 0;
// step size not permitted on lhs
if (lhs && *step) return 0;
// we must be looking at a MIDI note here, with m denoting the
// octave number; first character is the note name (must be a..g);
// optionally, the second character may denote an accidental (# or b)