source: buchla-68k/ram/asgvce.c@ 8d0af8a

Last change on this file since 8d0af8a was 8d0af8a, checked in by Thomas Lopatic <thomas@…>, 6 years ago

Fixed mixed-type pointer comparisons.
  • Property mode set to 100644
File size: 7.5 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 "ram.h"
13
14/*
15 =============================================================================
16 clrnl() -- clear note list
17 =============================================================================
18*/
19
20void clrnl(void)
21{
22 register int16_t i;
23
24 DB_ENTR("clrnl");
25
26 for (i = 0; i < NNEVTS - 1; i++) {
27
28 nevents[i].nxt = &nevents[i + 1];
29 nevents[i].note = 0;
30 nevents[i].group = 0;
31 }
32
33 nevents[NNEVTS - 1].nxt = (struct nevent *)0L;
34
35 nelist = (struct nevent *)0L;
36 nefree = &nevents[0];
37 nkdown = 0;
38
39 DB_EXIT("clrnl");
40}
41
42/*
43 =============================================================================
44 ne_end() -- enter a note end event
45 =============================================================================
46*/
47
48void ne_end(int16_t trg, int16_t grp)
49{
50 register int16_t nn;
51 register int32_t fcend;
52 register struct nevent *nx;
53 register struct n_entry *ep;
54
55 DB_ENTR("ne_end");
56
57 /* must be recording into a voice in record mode ... */
58
59 if ((recsw EQ 0) OR (grpmode[grp] NE 2)) {
60
61 DB_EXIT("ne_end");
62 return; /* ... or, we're done */
63 }
64
65 DB_CMNT("ne_end - recording");
66
67 /* make pointers point in the forward direction */
68
69 if (sd EQ D_BAK)
70 chgsdf();
71
72 if (se EQ D_BAK)
73 chgsef();
74
75 nn = trg & 0x007F; /* note number */
76
77 if (clksrc NE CK_STEP) { /* not in step mode */
78
79 DB_CMNT("ne_end - non-step");
80
81 if ((struct n_entry *)E_NULL NE (ep = (struct n_entry *)e_alc(E_SIZE1))) {
82
83 DB_CMNT("ne_end - enter note end");
84 ep->e_time = t_cur;
85 ep->e_type = EV_NEND | 0x80;
86 ep->e_note = (int8_t)nn;
87 ep->e_group = (int8_t)grp;
88 ep->e_vel = SM_SCALE(64);
89
90 p_cur = e_ins((struct s_entry *)ep,
91 ep_adj(p_cur, 0, t_cur))->e_fwd;
92
93 if (t_cur EQ t_ctr)
94 newflag = TRUE;
95
96 se_disp((struct s_entry *)ep, D_FWD, gdstbc, 1);
97
98 } else {
99
100 DB_CMNT("ne_end - no space");
101 }
102
103 DB_EXIT("ne_end");
104 return;
105
106 } else if (nkdown GE 1) { /* process note entry in step mode */
107
108 DB_CMNT("ne_end - log key up");
109
110 if (0 EQ --nkdown) { /* if all keys are up ... */
111
112 if (stepenb) {
113
114 /* advance by the note weight */
115
116 DB_CMNT("ne_end - advance weight");
117 fcend = fc_val + stepfrm[3][stepint];
118 fc_val += stepfrm[stepwgt][stepint];
119 sc_trek(fc_val);
120 sc_trak(fc_val);
121 DB_CMNT("ne_end - doing note ends");
122 }
123
124 while (nelist) {
125
126 nn = nelist->note; /* get note */
127 grp = nelist->group; /* get group */
128
129 if ((struct n_entry *)E_NULL NE
130 (ep = (struct n_entry *)e_alc(E_SIZE1))) {
131
132 DB_CMNT("ne_end - enter note end");
133 ep->e_time = t_cur;
134 ep->e_type = EV_NEND | 0x80;
135 ep->e_note = (int8_t)nn;
136 ep->e_group = (int8_t)grp;
137 ep->e_vel = SM_SCALE(64);
138
139 p_cur = e_ins((struct s_entry *)ep,
140 ep_adj(p_cur, 0, t_cur))->e_fwd;
141
142 se_disp((struct s_entry *)ep, D_FWD, gdstbc, 1);
143
144 if (lstendc < NLSTENTS)
145 lstends[lstendc++] = ep;
146
147 } else {
148
149 DB_CMNT("ne_end - no space");
150 }
151
152 DB_CMNT("ne_end - freeing nevent");
153 nx = nelist->nxt; /* get next nelist ptr */
154 nelist->nxt = nefree; /* free nelist entry */
155 nefree = nelist; /* ... */
156 nelist = nx; /* update nelist */
157 }
158
159 lstflag = TRUE; /* indicate end of list */
160
161 DB_CMNT("ne_end - note ends done");
162
163 if (stepenb) {
164
165 if (fc_val LT fcend) { /* advance to the interval */
166
167 DB_CMNT("ne_end - advance interval");
168 fc_val = fcend;
169 sc_trek(fc_val);
170 sc_trak(fc_val);
171 }
172 }
173 }
174
175 } else {
176
177 nkdown = 0; /* no keys down */
178
179 lstendc = 0; /* no step entries to delete */
180 lstbgnc = 0;
181 lstflag = FALSE;
182 }
183
184 DB_EXIT("ne_end");
185}
186
187/*
188 =============================================================================
189 ne_bgn() -- enter a note begin event
190 =============================================================================
191*/
192
193void ne_bgn(int16_t grp, int16_t key, int16_t vel)
194{
195 register struct n_entry *ep;
196 register struct nevent *np;
197
198 DB_ENTR("ne_bgn");
199
200 /* must be recording into a group in record mode ... */
201
202 if ((recsw NE 0) AND (grpmode[grp] EQ 2)) {
203
204 DB_CMNT("ne_bgn - recording");
205
206 /* make pointers point in the forward direction */
207
208 if (sd EQ D_BAK)
209 chgsdf();
210
211 if (se EQ D_BAK)
212 chgsef();
213
214 if (lstflag) { /* cancel old list of notes */
215
216 lstbgnc = 0;
217 lstendc = 0;
218 lstflag = FALSE;
219 }
220
221 if (clksrc EQ CK_STEP) { /* step mode */
222
223 DB_CMNT("ne_bgn - step");
224 ++nkdown; /* count keys down */
225
226 if (nefree) { /* log a key closure */
227
228 np = nefree;
229 nefree = np->nxt;
230 np->note = key;
231 np->group = grp;
232 np->nxt = nelist;
233 nelist = np;
234 DB_CMNT("ne_bgn - key logged");
235
236 } else {
237
238 DB_CMNT("ne_bgn - nefree empty");
239 }
240 }
241
242 if ((struct n_entry *)E_NULL NE
243 (ep = (struct n_entry *)e_alc(E_SIZE1))) {
244
245 DB_CMNT("ne_bgn - enter note begin");
246 ep->e_time = t_cur;
247 ep->e_type = EV_NBEG | 0x80;
248 ep->e_note = (int8_t)key;
249 ep->e_group = (int8_t)grp;
250 ep->e_vel = (clksrc EQ CK_STEP) ? SM_SCALE(64) : vel;
251
252 p_cur = e_ins((struct s_entry *)ep,
253 ep_adj(p_cur, 0, t_cur))->e_fwd;
254
255 se_disp((struct s_entry *)ep, D_FWD, gdstbc, 1);
256
257 if (t_cur EQ t_ctr)
258 newflag = TRUE;
259
260 if ((clksrc EQ CK_STEP) AND (lstbgnc < NLSTENTS))
261 lstbgns[lstbgnc++] = ep;
262
263 } else {
264
265 DB_CMNT("ne_bgn - no space");
266 }
267 }
268
269 DB_EXIT("ne_bgn");
270}
271
272/*
273 =============================================================================
274 showvel() -- display velocity for a group
275 =============================================================================
276*/
277
278void showvel(int16_t g, int16_t v)
279{
280 int8_t buf[6];
281
282 if (v_regs[5] & 0x0180)
283 vbank(0);
284
285 lastvel[g] = v;
286
287 sprintf(buf, "%03d", (v / 252));
288
289 vputs(obj8, 5, (g * 5) + 6, buf, SDW11ATR);
290}
291
292/*
293 =============================================================================
294 asgvce() -- assign a voice
295 =============================================================================
296*/
297
298void asgvce(int16_t grp, int16_t port, int16_t chan, int16_t key, int16_t vel)
299{
300 register int16_t i;
301 register int16_t tv;
302 register int16_t vp;
303 register int16_t trg;
304 register int16_t aflag;
305
306 DB_ENTR("asgvce");
307
308 trg = (port << 11) + (chan << 7) + key; /* trigger number */
309 vp = lastvce[grp] + 1; /* voice to start with */
310 vp = (vp > 11) ? 0 : vp; /* ... (adjust into range) */
311
312 DB_CMNT("asgvce - search unassgined");
313
314 for (i = 12; i--; ) { /* search for unassigned voice */
315
316 if ((vce2trg[vp] EQ -1) AND (vce2grp[vp] EQ (grp + 1))) {
317
318 if ((ndisp EQ 2) AND velflag AND (NOT recsw))
319 showvel(grp, vel);
320
321 lastvce[grp] = vp;
322 execkey(trg, tuntab[key], vp, 0);
323 DB_EXIT("asgvce - free voice");
324 return;
325 }
326
327 if (++vp > 11)
328 vp = 0;
329 }
330
331 DB_CMNT("asgvce - seach non-held");
332
333 for (i = 12; i--; ) { /* search for non-held voice */
334
335 tv = vce2trg[vp];
336
337 if (tv EQ -1)
338 aflag = TRUE; /* OK - unassigned */
339 else if (0 EQ (tv & (MKEYHELD << 8)))
340 aflag = TRUE; /* OK - not held */
341 else
342 aflag = FALSE; /* NO - held */
343
344 if (aflag AND (vce2grp[vp] EQ (grp + 1))) {
345
346 if ((ins2grp[grp] & GTAG1) AND
347 (tv NE trg) AND (tv NE -1))
348 legato = 1;
349
350 if ((ndisp EQ 2) AND velflag AND (NOT recsw))
351 showvel(grp, vel);
352
353 lastvce[grp] = vp;
354 execkey(trg, tuntab[key], vp, 0);
355 DB_EXIT("asgvce - stolen voice");
356 return;
357 }
358
359 if (++vp > 11)
360 vp = 0;
361 }
362
363 DB_EXIT("asgvce - no voice");
364}
365
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