source: buchla-68k/ram/asgvce.c@ 60288f5

Last change on this file since 60288f5 was 0580615, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Point of no return.
  • Property mode set to 100644
File size: 9.5 KB
Line 
1/*
2 =============================================================================
3 asgvce.c -- MIDAS-VII -- assign voice / enter notes into score
4 Version 12 -- 1988-10-03 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#undef DEBUGGER /* define to enable debug trace */
9
10#define DEBUGIT 0
11
12#include "debug.h"
13
14#include "biosdefs.h"
15#include "stddefs.h"
16#include "graphdef.h"
17#include "hwdefs.h"
18#include "smdefs.h"
19#include "sclock.h"
20#include "score.h"
21#include "slice.h"
22#include "vsdd.h"
23
24#include "midas.h"
25#include "scfns.h"
26#include "scdsp.h"
27
28#if DEBUGIT
29extern short debugsw;
30#endif
31
32/*
33
34*/
35
36extern short clksrc; /* clock source */
37extern short curasg; /* current assignment table */
38extern short legato; /* "legato" mode flag */
39extern short lstbgnc; /* last note begin entry count */
40extern short lstendc; /* last note end entry count */
41extern short lstflag; /* last note list end flag */
42extern short ndisp; /* current display number */
43extern short newflag; /* new data entered while t_ctr EQ t_cur */
44extern short nkdown; /* number of keys down */
45extern short recsw; /* record/play switch */
46extern short sd; /* score display direction */
47extern short se; /* score execution direction */
48extern short stepenb; /* step enable */
49extern short stepint; /* note interval */
50extern short stepwgt; /* note weight */
51extern short velflag; /* velocity display enable flag */
52
53extern short grpmode[]; /* group mode table */
54extern short grpstat[]; /* group status table */
55extern short ins2grp[]; /* instrument to group assigments */
56extern short vce2grp[]; /* voice to group map */
57extern short lastvce[]; /* last voice assigned in each group */
58extern short lastvel[]; /* last velocity seen by each group */
59extern short tuntab[]; /* current tuning table */
60extern short vce2trg[]; /* voice to trigger map (-1 EQ NULL) */
61
62extern short stepfrm[][17]; /* steps per frame table */
63
64extern unsigned *obj8; /* score display object pointer */
65
66extern struct gdsel *gdstbc[]; /* group status table - center slice */
67
68extern struct n_entry *lstbgns[NLSTENTS]; /* note begin pointers */
69extern struct n_entry *lstends[NLSTENTS]; /* note end pointers */
70
71extern struct nevent *nefree; /* pointer to free note entries */
72extern struct nevent *nelist; /* pointer to note entry list */
73
74extern struct nevent nevents[NNEVTS]; /* note event list */
75
76/*
77
78*/
79
80/*
81 =============================================================================
82 clrnl() -- clear note list
83 =============================================================================
84*/
85
86void clrnl(void)
87{
88 register short i;
89
90 DB_ENTR("clrnl");
91
92 for (i = 0; i < NNEVTS - 1; i++) {
93
94 nevents[i].nxt = &nevents[i + 1];
95 nevents[i].note = 0;
96 nevents[i].group = 0;
97 }
98
99 nevents[NNEVTS - 1].nxt = (struct nevent *)0L;
100
101 nelist = (struct nevent *)0L;
102 nefree = &nevents[0];
103 nkdown = 0;
104
105 DB_EXIT("clrnl");
106}
107
108/*
109
110*/
111
112/*
113 =============================================================================
114 ne_end() -- enter a note end event
115 =============================================================================
116*/
117
118void ne_end(short trg, short grp)
119{
120 register short nn;
121 register long fcend;
122 register struct nevent *nx;
123 register struct n_entry *ep;
124
125 DB_ENTR("ne_end");
126
127 /* must be recording into a voice in record mode ... */
128
129 if ((recsw EQ 0) OR (grpmode[grp] NE 2)) {
130
131 DB_EXIT("ne_end");
132 return; /* ... or, we're done */
133 }
134
135 DB_CMNT("ne_end - recording");
136
137 /* make pointers point in the forward direction */
138
139 if (sd EQ D_BAK)
140 chgsdf();
141
142 if (se EQ D_BAK)
143 chgsef();
144/*
145
146*/
147 nn = trg & 0x007F; /* note number */
148
149 if (clksrc NE CK_STEP) { /* not in step mode */
150
151 DB_CMNT("ne_end - non-step");
152
153 if (E_NULL NE (ep = (struct n_entry *)e_alc(E_SIZE1))) {
154
155 DB_CMNT("ne_end - enter note end");
156 ep->e_time = t_cur;
157 ep->e_type = EV_NEND | 0x80;
158 ep->e_note = nn;
159 ep->e_group = grp;
160 ep->e_vel = SM_SCALE(64);
161
162 p_cur = e_ins((struct s_entry *)ep,
163 ep_adj(p_cur, 0, t_cur))->e_fwd;
164
165 if (t_cur EQ t_ctr)
166 newflag = TRUE;
167
168 se_disp(ep, D_FWD, gdstbc, 1);
169
170 } else {
171
172 DB_CMNT("ne_end - no space");
173 }
174
175 DB_EXIT("ne_end");
176 return;
177/*
178
179*/
180 } else if (nkdown GE 1) { /* process note entry in step mode */
181
182 DB_CMNT("ne_end - log key up");
183
184 if (0 EQ --nkdown) { /* if all keys are up ... */
185
186 if (stepenb) {
187
188 /* advance by the note weight */
189
190 DB_CMNT("ne_end - advance weight");
191 fcend = fc_val + stepfrm[3][stepint];
192 fc_val += stepfrm[stepwgt][stepint];
193 sc_trek(fc_val);
194 sc_trak(fc_val);
195 DB_CMNT("ne_end - doing note ends");
196 }
197
198 while (nelist) {
199
200 nn = nelist->note; /* get note */
201 grp = nelist->group; /* get group */
202
203 if (E_NULL NE (ep = (struct n_entry *)e_alc(E_SIZE1))) {
204
205 DB_CMNT("ne_end - enter note end");
206 ep->e_time = t_cur;
207 ep->e_type = EV_NEND | 0x80;
208 ep->e_note = nn;
209 ep->e_group = grp;
210 ep->e_vel = SM_SCALE(64);
211
212 p_cur = e_ins((struct s_entry *)ep,
213 ep_adj(p_cur, 0, t_cur))->e_fwd;
214
215 se_disp(ep, D_FWD, gdstbc, 1);
216
217 if (lstendc < NLSTENTS)
218 lstends[lstendc++] = ep;
219
220 } else {
221
222 DB_CMNT("ne_end - no space");
223 }
224/*
225
226*/
227 DB_CMNT("ne_end - freeing nevent");
228 nx = nelist->nxt; /* get next nelist ptr */
229 nelist->nxt = nefree; /* free nelist entry */
230 nefree = nelist; /* ... */
231 nelist = nx; /* update nelist */
232 }
233
234 lstflag = TRUE; /* indicate end of list */
235
236 DB_CMNT("ne_end - note ends done");
237
238 if (stepenb) {
239
240 if (fc_val LT fcend) { /* advance to the interval */
241
242 DB_CMNT("ne_end - advance interval");
243 fc_val = fcend;
244 sc_trek(fc_val);
245 sc_trak(fc_val);
246 }
247 }
248 }
249
250 } else {
251
252 nkdown = 0; /* no keys down */
253
254 lstendc = 0; /* no step entries to delete */
255 lstbgnc = 0;
256 lstflag = FALSE;
257 }
258
259 DB_EXIT("ne_end");
260}
261
262/*
263
264*/
265
266/*
267 =============================================================================
268 ne_bgn() -- enter a note begin event
269 =============================================================================
270*/
271
272void ne_bgn(short grp, short key, short vel)
273{
274 register struct n_entry *ep;
275 register struct nevent *np;
276
277 DB_ENTR("ne_bgn");
278
279 /* must be recording into a group in record mode ... */
280
281 if ((recsw NE 0) AND (grpmode[grp] EQ 2)) {
282
283 DB_CMNT("ne_bgn - recording");
284
285 /* make pointers point in the forward direction */
286
287 if (sd EQ D_BAK)
288 chgsdf();
289
290 if (se EQ D_BAK)
291 chgsef();
292
293 if (lstflag) { /* cancel old list of notes */
294
295 lstbgnc = 0;
296 lstendc = 0;
297 lstflag = FALSE;
298 }
299
300 if (clksrc EQ CK_STEP) { /* step mode */
301
302 DB_CMNT("ne_bgn - step");
303 ++nkdown; /* count keys down */
304
305 if (nefree) { /* log a key closure */
306
307 np = nefree;
308 nefree = np->nxt;
309 np->note = key;
310 np->group = grp;
311 np->nxt = nelist;
312 nelist = np;
313 DB_CMNT("ne_bgn - key logged");
314
315 } else {
316
317 DB_CMNT("ne_bgn - nefree empty");
318 }
319 }
320/*
321
322*/
323 if (E_NULL NE (ep = (struct n_entry *)e_alc(E_SIZE1))) {
324
325 DB_CMNT("ne_bgn - enter note begin");
326 ep->e_time = t_cur;
327 ep->e_type = EV_NBEG | 0x80;
328 ep->e_note = key;
329 ep->e_group = grp;
330 ep->e_vel = (clksrc EQ CK_STEP) ? SM_SCALE(64) : vel;
331
332 p_cur = e_ins((struct s_entry *)ep,
333 ep_adj(p_cur, 0, t_cur))->e_fwd;
334
335 se_disp(ep, D_FWD, gdstbc, 1);
336
337 if (t_cur EQ t_ctr)
338 newflag = TRUE;
339
340 if ((clksrc EQ CK_STEP) AND (lstbgnc < NLSTENTS))
341 lstbgns[lstbgnc++] = ep;
342
343 } else {
344
345 DB_CMNT("ne_bgn - no space");
346 }
347 }
348
349 DB_EXIT("ne_bgn");
350}
351
352/*
353
354*/
355
356/*
357 =============================================================================
358 showvel() -- display velocity for a group
359 =============================================================================
360*/
361
362void showvel(short g, short v)
363{
364 char buf[6];
365
366 if (v_regs[5] & 0x0180)
367 vbank(0);
368
369 lastvel[g] = v;
370
371 sprintf(buf, "%03d", (v / 252));
372
373 vputs(obj8, 5, (g * 5) + 6, buf, SDW11ATR);
374}
375
376/*
377
378*/
379
380/*
381 =============================================================================
382 asgvce() -- assign a voice
383 =============================================================================
384*/
385
386void asgvce(short grp, short port, short chan, short key, short vel)
387{
388 register short i;
389 register short tv;
390 register short vp;
391 register short trg;
392 register short aflag;
393 register struct nevent *np;
394 register struct n_entry *ep;
395
396 DB_ENTR("asgvce");
397
398 trg = (port << 11) + (chan << 7) + key; /* trigger number */
399 vp = lastvce[grp] + 1; /* voice to start with */
400 vp = (vp > 11) ? 0 : vp; /* ... (adjust into range) */
401
402/*
403
404*/
405
406 DB_CMNT("asgvce - search unassgined");
407
408 for (i = 12; i--; ) { /* search for unassigned voice */
409
410 if ((vce2trg[vp] EQ -1) AND (vce2grp[vp] EQ (grp + 1))) {
411
412 if ((ndisp EQ 2) AND velflag AND (NOT recsw))
413 showvel(grp, vel);
414
415 lastvce[grp] = vp;
416 execkey(trg, tuntab[key], vp, 0);
417 DB_EXIT("asgvce - free voice");
418 return;
419 }
420
421 if (++vp > 11)
422 vp = 0;
423 }
424
425 DB_CMNT("asgvce - seach non-held");
426
427 for (i = 12; i--; ) { /* search for non-held voice */
428
429 tv = vce2trg[vp];
430
431 if (tv EQ -1)
432 aflag = TRUE; /* OK - unassigned */
433 else if (0 EQ (tv & (MKEYHELD << 8)))
434 aflag = TRUE; /* OK - not held */
435 else
436 aflag = FALSE; /* NO - held */
437
438 if (aflag AND (vce2grp[vp] EQ (grp + 1))) {
439
440 if ((ins2grp[grp] & GTAG1) AND
441 (tv NE trg) AND (tv NE -1))
442 legato = 1;
443
444 if ((ndisp EQ 2) AND velflag AND (NOT recsw))
445 showvel(grp, vel);
446
447 lastvce[grp] = vp;
448 execkey(trg, tuntab[key], vp, 0);
449 DB_EXIT("asgvce - stolen voice");
450 return;
451 }
452
453 if (++vp > 11)
454 vp = 0;
455 }
456
457 DB_EXIT("asgvce - no voice");
458}
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