source: buchla-68k/ram/sctrak.c@ e225e77

Last change on this file since e225e77 was e225e77, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Added missing includes and declarations.
  • Property mode set to 100644
File size: 9.5 KB
RevLine 
[f40a309]1/*
2 =============================================================================
3 sctrak.c -- advance the score to a given frame
4 Version 28 -- 1988-09-23 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#undef DEBUGGER /* define to enable debug trace */
9
10#undef DEBUG_TR /* define for sc_trak() debug */
11
12#undef CHECKPTR /* define to check pointers */
13
14#include "debug.h"
15
16#include "hwdefs.h"
17#include "stddefs.h"
18#include "score.h"
19#include "scfns.h"
20#include "memory.h"
21#include "slice.h"
22
[e225e77]23#include "vsddsw.h"
24
25extern void dslocn(void);
26extern void sc_adv(void);
27extern void se_disp(struct s_entry *ep, int16_t sd, struct gdsel *gdstb[], int16_t cf);
28extern void sreset(void);
29
[f40a309]30#ifdef DEBUG_TR
31extern short debugsw;
32#endif
33
[7258c6a]34extern int16_t ancmsw;
35extern int16_t dubsw;
36extern int16_t ndisp;
37extern int16_t recsw;
38extern int16_t sbase;
39extern int16_t sd;
40extern int16_t se;
41extern int16_t soffset;
[f40a309]42
[7258c6a]43extern int16_t grpmode[];
44extern int16_t grpstat[];
[f40a309]45
[7258c6a]46extern int16_t varmode[][16];
[f40a309]47
48extern struct gdsel *gdfsep;
49
50extern struct gdsel *gdstbc[];
51extern struct gdsel *gdstbn[];
52extern struct gdsel *gdstbp[];
53
54/*
55
56*/
57
58/*
59 =============================================================================
60 sc_trak(tval) -- position score display such that t_ctr EQ 'tval'
61 Assumes that the pointers are correct.
62 =============================================================================
63*/
[7258c6a]64
[f40a309]65int16_t sc_trak(int32_t tval)
66{
[7258c6a]67 register struct s_entry *rpb, *rpc, *rpf;
68 register int32_t rtb, rtc, rtf;
[f40a309]69 register int16_t mod48 = 48;
70 struct gdsel *gdsp;
71
72 DB_ENTR("sc_trak");
73
74 if (ndisp NE 2) {
75
76 DB_EXIT("sc_trak - ndisp NE 2");
77 return(FAILURE);
78 }
79
80#ifdef CHECKPTR
81 Pcheck(p_fwd, "p_fwd - sc_trak - entry");
82 Pcheck(p_ctr, "p_ctr - sc_trak - entry");
83 Pcheck(p_bak, "p_bak - sc_trak - entry");
84#endif
85
86 if ((p_fwd EQ E_NULL) OR (p_ctr EQ E_NULL) OR (p_bak EQ E_NULL)) {
87
88 DB_EXIT("sc_trak - NULL ptr");
89 return(FAILURE);
90 }
91/*
92
93*/
94 if (v_regs[5] & 0x0180) /* setup for VSDD bank 0 */
95 vbank(0);
96
97 rpf = p_fwd; /* forward event pointer */
98 rtf = t_fwd; /* forward event time */
99
100 rpc = p_ctr; /* current event pointer */
101 rtc = t_ctr; /* current event time */
102
103 rpb = p_bak; /* backward event pointer */
104 rtb = t_bak; /* backward event time */
105
106#ifdef DEBUG_TR
107 if (debugsw) {
108
109 printf("\n## sc_trak(%10ld) ENTRY - fc_val=%10ld sd = %s sbase=%d soffset=%d\n",
110 tval, fc_val, sd ? "BAK" : "FWD", sbase, soffset);
111
112 printf(" p_bak: %08lX p_ctr: %08lX p_fwd: %08lX\n",
113 p_bak, p_ctr, p_fwd);
114
115 printf(" t_bak: %10ld t_ctr: %10ld t_fwd: %10ld\n",
116 t_bak, t_ctr, t_fwd);
117
118 printf(" T.bak: %10ld T.ctr: %10ld T.fwd: %10ld\n",
119 p_bak->e_time, p_ctr->e_time, p_fwd->e_time);
120 }
121#endif
122
123/*
124
125*/
126 DB_CMNT("sc_trak - update loop");
127
128 if (sd EQ D_FWD) { /* scroll forward */
129
130 DB_CMNT("sc_trak - forward");
131
132 while (rtc++ LT tval) { /* advance to tval */
133
134 sreset(); /* reset highlighting */
135
136 ++rtb; /* update target time at p_bak */
137 ++rtf; /* update target time at p_fwd */
138
139 if (rpb->e_type NE EV_FINI) { /* up to end of score */
140
141 while (rpb->e_time EQ rtb) { /* check event time */
142
143 se_disp(rpb, D_FWD, gdstbp, 0); /* display event */
144 rpb = rpb->e_fwd; /* point at next event */
145
146 if (rpb->e_type EQ EV_FINI) /* stop at end of score */
147 break;
148 }
149 }
150
151 if (0 EQ (rtb % mod48)) { /* handle beat markers */
152
153 if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
154
155 gdfsep = gdsp->next;
156
157 gdsp->next = gdstbp[12];
158 gdsp->note = 0x1111;
159 gdsp->code = 1;
160
161 gdstbp[12] = gdsp;
162 }
163 }
164/*
165
166*/
167 if (rpc->e_type NE EV_FINI) { /* up to end of score */
168
169 while (rpc->e_time EQ rtc) { /* check event time */
170
171 se_disp(rpc, D_FWD, gdstbc, 1); /* display event */
172 rpc = rpc->e_fwd; /* point at next event */
173
174 if (rpc->e_type EQ EV_FINI) /* stop at end of score */
175 break;
176 }
177 }
178
179 if (rpf->e_type NE EV_FINI) { /* up to end of score */
180
181 while (rpf->e_time EQ rtf) { /* check event time */
182
183 se_disp(rpf, D_FWD, gdstbn, 0); /* display event */
184 rpf = rpf->e_fwd; /* next event pointer */
185
186 if (rpf->e_type EQ EV_FINI) /* stop at end of score */
187 break;
188 }
189 }
190
191 if (0 EQ (rtf % mod48)) { /* handle beat markers */
192
193 if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
194
195 gdfsep = gdsp->next;
196
197 gdsp->next = gdstbn[12];
198 gdsp->note = 0x1111;
199 gdsp->code = 1;
200
201 gdstbn[12] = gdsp;
202 }
203 }
204
205 sc_adv(); /* scroll the display */
206 }
207
208/*
209
210*/
211 } else { /* scroll backward */
212
213 DB_CMNT("sc_trak - backward");
214
215 while (rtc-- GT tval) { /* advance to tval */
216
217 sreset(); /* reset highlighting */
218
219 --rtb; /* update target time at p_bak */
220 --rtf; /* update target time at p_fwd */
221
222 if (rpb->e_type NE EV_SCORE) { /* up to start of score */
223
224 while (rpb->e_time EQ rtb) { /* check event time */
225
226 se_disp(rpb, D_BAK, gdstbp, 0);
227 rpb = rpb->e_bak; /* point at next event */
228
229 if (rpb->e_type EQ EV_SCORE) /* stop at end of score */
230 break;
231 }
232 }
233
234 if (0 EQ (rtb % mod48)) { /* handle beat markers */
235
236 if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
237
238 gdfsep = gdsp->next;
239
240 gdsp->next = gdstbp[12];
241 gdsp->note = 0x1111;
242 gdsp->code = 1;
243
244 gdstbp[12] = gdsp;
245 }
246 }
247/*
248
249*/
250 if (rpc->e_type NE EV_SCORE) { /* up to start of score */
251
252 while (rpc->e_time EQ rtc) { /* check event time */
253
254 se_disp(rpc, D_BAK, gdstbc, 1); /* display event */
255 rpc = rpc->e_bak; /* point at next event */
256
257 if (rpc->e_type EQ EV_SCORE) /* stop at end of score */
258 break;
259 }
260 }
261
262 if (rpf->e_type NE EV_SCORE) { /* up to end of score */
263
264 while (rpf->e_time EQ rtf) { /* check event time */
265
266 se_disp(rpf, D_BAK, gdstbn, 0); /* display event */
267 rpf = rpf->e_bak; /* next event pointer */
268
269 if (rpf->e_type EQ EV_SCORE) /* stop at end of score */
270 break;
271 }
272 }
273
274 if (0 EQ (rtf % mod48)) { /* handle beat markers */
275
276 if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
277
278 gdfsep = gdsp->next;
279
280 gdsp->next = gdstbn[12];
281 gdsp->note = 0x1111;
282 gdsp->code = 1;
283
284 gdstbn[12] = gdsp;
285 }
286 }
287
288 sc_adv(); /* scroll the display */
289 }
290 }
291/*
292
293*/
294 p_fwd = rpf; /* update p_fwd */
295 t_fwd = tval + TO_FWD; /* update t_fwd */
296
297 p_ctr = rpc; /* update p_ctr */
298 t_ctr = tval; /* update t_ctr */
299
300 p_bak = rpb; /* update p_bak */
301 t_bak = tval - TO_BAK; /* update t_bak */
302
303 DB_CMNT("sc_trak - dslocn");
304 dslocn(); /* display current location */
305
306#ifdef DEBUG_TR
307 if (debugsw) {
308
309 printf("\n## sc_trak(%10ld) EXIT - fc_val=%10ld sbase=%d soffset=%d\n",
310 tval, fc_val, sbase, soffset);
311
312 printf(" p_bak: %08lX, p_ctr: %08lX, p_fwd: %08lX\n",
313 p_bak, p_ctr, p_fwd);
314
315 printf(" t_bak: %10ld, t_ctr: %10ld, t_fwd: %10ld\n",
316 t_bak, t_ctr, t_fwd);
317
318 printf(" T.bak: %10ld T.ctr: %10ld T.fwd: %10ld\n",
319 p_bak->e_time, p_ctr->e_time, p_fwd->e_time);
320 }
321#endif
322
323 DB_EXIT("sc_trak");
324 return(SUCCESS);
325}
326
327/*
328
[7258c6a]329*/
[f40a309]330
331/*
[7258c6a]332 =============================================================================
333 sc_trek(tval) -- follow score chain such that t_cur EQ 'tval'
[f40a309]334 =============================================================================
335*/
336
337int16_t sc_trek(int32_t tval)
338{
339 register struct s_entry *rp, *ep;
340 register int32_t tc, rt;
341 register int16_t et, grp;
342
343 DB_ENTR("sc_trek");
344
345#ifdef CHECKPTR
346 Pcheck(p_cur, "p_cur - sc_trek - entry");
347#endif
348
349 if (p_cur EQ E_NULL) {
350
351 DB_EXIT("sc_trek - NULL ptr");
352 return(FAILURE);
353 }
354
355 rp = p_cur; /* current event pointer */
356 rt = t_cur; /* current event time */
357
358 DB_CMNT("sc_trek - chasing p_cur");
359
360#ifdef DEBUGGER
361 if (se EQ D_FWD)
362 DB_CMNT("sc_trek - forward");
363 else
364 DB_CMNT("sc_trek - backward");
365#endif
366
367/*
368
369*/
370 while (rt NE tval) { /* track tval */
371
372 if (se EQ D_FWD)
373 ++rt;
374 else
375 --rt;
376
377 if (rp->e_type NE EV_FINI) {
378
379 while (rp->e_time EQ rt) { /* process events a rt */
380
381 /* "erase head" logic */
382
383 if (recsw AND (se EQ D_FWD)) {
384
385 et = 0x007F & rp->e_type;
386
387 if ((NOT dubsw) AND
388 ((et EQ EV_NBEG) OR (et EQ EV_NEND))) {
389
390 grp = rp->e_data2;
391
392 if (grpstat[grp] AND (2 EQ grpmode[grp])) {
393
394 DB_CMNT("sc_trek - erasing note");
395
396 /* erasing a note */
397
398 ep = rp->e_fwd;
399
400 if (rp EQ p_bak)
401 p_bak = ep;
402
403 if (rp EQ p_cur)
404 p_cur = ep;
405
406 if (rp EQ p_ctr)
407 p_ctr = ep;
408
409 if (rp EQ p_fwd)
410 p_fwd = ep;
411
412 e_del(e_rmv(rp));
413 rp = ep;
414 goto nextev;
415 }
416/*
417
418*/
419 } else if (et EQ EV_ANVL) {
420
421 grp = 0x000F & rp->e_data1;
422
423 if (grpstat[grp] AND (2 EQ (ancmsw ?
424 varmode[0x000F & (rp->e_data1 >> 4)][grp] :
425 grpmode[grp]))) {
426
427 DB_CMNT("sc_trek - erasing var");
428
429 /* erasing an analog variable */
430
431 ep = rp->e_fwd;
432
433 if (rp EQ p_bak)
434 p_bak = ep;
435
436 if (rp EQ p_cur)
437 p_cur = ep;
438
439 if (rp EQ p_ctr)
440 p_ctr = ep;
441
442 if (rp EQ p_fwd)
443 p_fwd = ep;
444
445 e_del(e_rmv(rp));
446 rp = ep;
447 goto nextev;
448 }
449 }
450 }
451
452 if (rp->e_time EQ rt) { /* check event time */
453
454 se_exec(rp, se); /* execute event */
455
456 if (se EQ D_FWD)
457 rp = rp->e_fwd; /* point at next event */
458 else
459 rp = rp->e_bak; /* point at next event */
460 }
461
462nextev:
463 if (((se EQ D_FWD) AND (rp->e_type EQ EV_FINI)) OR
464 ((se EQ D_BAK) AND (rp->e_type EQ EV_SCORE)))
465 break;
466 }
467 }
468 }
469/*
470
471*/
472 p_cur = rp; /* update p_cur */
473 t_cur = tval; /* update t_cur */
474
475 DB_EXIT("sc_trek");
476 return(SUCCESS);
477}
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