source: buchla-68k/ram/sqscan.c@ 081eee0

Last change on this file since 081eee0 was 66072f0, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Fixed sqscan.c.
  • Property mode set to 100644
File size: 17.5 KB
Line 
1/*
2 =============================================================================
3 sqscan.c -- scan a string and turn it into score events
4 Version 24 -- 1988-06-20 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#define CHEKSTOP 1 /* non-zero to trap to ROMP on error */
9
10#include "ram.h"
11
12#if CHEKSTOP
13int16_t chkstop = TRUE;
14#endif
15
16int8_t *nlist[] = { "a", "b", "c", "d", "e", "f", "g", NULL };
17
18int16_t notetab[] = { 0, 2, 3, 5, 7, 8, 10 };
19int16_t octab[] = { 21, 33, 45, 57, 69, 81, 93, 105 };
20
21/*
22 =============================================================================
23 nospace(et) -- print error message for no space condition
24 =============================================================================
25*/
26
27void nospace(int8_t *et)
28{
29
30#if CHEKSTOP
31 if (chkstop) {
32
33 printf("\n** sqscan: ERROR - no space for %s **\n\n", et);
34 xtrap15(); /* ERROR: trap to ROMP */
35
36 SEsnap();
37 waitcr();
38 }
39#endif
40}
41
42/*
43 =============================================================================
44 Pcheck(ptr, msg) -- check 'ptr' for validity -- output msg if bad.
45 A pointer is invalid if it points outside the score or is null.
46 Returns SUCCESS for a good pointer, FAILURE for a bad one.
47 =============================================================================
48*/
49
50int16_t Pcheck(struct s_entry *ptr, int8_t *msg)
51{
52 register struct s_entry *cval;
53
54 if (ptr EQ E_NULL) {
55
56 printf("** Pcheck($%08.8lx): ZERO - %s **\n", ptr, msg);
57
58#if CHEKSTOP
59 if (chkstop)
60 xtrap15(); /* ERROR: trap to ROMP */
61#endif
62 return(FAILURE);
63 }
64
65 cval = spool;
66
67 if (ptr LT cval) {
68
69 printf("** Pcheck($%08.8lx): LOW - %s **\n", ptr, msg);
70#if CHEKSTOP
71 if (chkstop)
72 xtrap15(); /* ERROR: trap to ROMP */
73#endif
74 return(FAILURE);
75 }
76
77 cval = &spool[(int32_t)MAX_SE-1];
78
79 if (ptr GT cval) {
80
81 printf("** Pcheck($%08.8lx): HIGH - %s **\n", ptr, msg);
82#if CHEKSTOP
83 if (chkstop)
84 xtrap15(); /* ERROR: trap to ROMP */
85#endif
86 return(FAILURE);
87 }
88
89 return(SUCCESS);
90}
91
92/*
93 =============================================================================
94 insnevt() -- insert a note event at t_cur/p_cur
95 =============================================================================
96*/
97
98struct n_entry *insnevt(struct n_entry *nsp, int16_t nt, int16_t grp, int16_t note, int16_t vel)
99{
100 nsp->e_time = t_cur;
101 nsp->e_type = (int8_t)nt;
102 nsp->e_note = (int8_t)note;
103 nsp->e_group = (int8_t)grp;
104 nsp->e_vel = vel;
105
106 return(e_ins((struct s_entry *)nsp, ep_adj(p_cur, 0, t_cur))->e_fwd);
107}
108
109/*
110 =============================================================================
111 Qevent() -- 'event' syntax equation
112 =============================================================================
113*/
114
115int16_t Qevent(void)
116{
117 register int16_t aux1, aux2, aux3, aux4;
118 register int8_t *chptr;
119 register struct s_entry *tsp1, *tsp2;
120 struct s_entry *tsp3;
121
122 if (!CM_CHR('!')) /* all commands start with ! */
123 CM_NOGO;
124
125 if (CM_USTR("group")) { /* !group = n */
126
127 if (!CM_CHR('='))
128 CM_NOGO;
129
130 if (!CM_NUM)
131 CM_NOGO;
132
133 curgrp = (int16_t)QQnum;
134
135 if (verbose)
136 printf("<Current group = %d>\n", curgrp);
137
138 CM_OK;
139 }
140
141
142 if (CM_USTR("status")) { /* !status = {on|off} */
143
144 if (!CM_CHR('='))
145 CM_NOGO;
146
147 if (CM_USTR("on")) {
148
149 if (E_NULL EQ (tsp1 = e_alc(E_SIZE2))) {
150
151 nospace("!status=on");
152 CM_NOGO;
153 }
154
155 tsp1->e_time = t_cur;
156 tsp1->e_type = EV_GRP;
157 tsp1->e_data1 = (int8_t)curgrp;
158 tsp1->e_data2 = GS_ENBL;
159
160 p_cur = e_ins(tsp1, ep_adj(p_cur, 0, t_cur))->e_fwd;
161 eh_ins(tsp1, EH_GRP);
162
163 if (verbose)
164 printf("%8ld: Group %d enabled\n",
165 t_cur, curgrp);
166 CM_OK;
167
168 } else if (CM_USTR("off")) {
169
170 if (E_NULL EQ (tsp1 = e_alc(E_SIZE2))) {
171
172 nospace("!status=off");
173 CM_NOGO;
174 }
175
176 tsp1->e_time = t_cur;
177 tsp1->e_type = EV_GRP;
178 tsp1->e_data1 = (int8_t)curgrp;
179 tsp1->e_data2 = GS_DSBL;
180
181 p_cur = e_ins(tsp1, ep_adj(p_cur, 0, t_cur))->e_fwd;
182 eh_ins(tsp1, EH_GRP);
183
184 if (verbose)
185 printf("%8ld: Group %d disabled\n",
186 t_cur, curgrp);
187 CM_OK;
188
189 } else
190 CM_NOGO;
191 }
192
193
194 if (CM_USTR("tempo")) { /* !tempo = n */
195
196 if (!CM_CHR('='))
197 CM_NOGO;
198
199 if (!CM_NUM)
200 CM_NOGO;
201
202 aux1 = (int16_t)QQnum;
203
204 if (E_NULL EQ (tsp1 = e_alc(E_SIZE2))) {
205
206 nospace("!tempo");
207 CM_NOGO;
208 }
209
210 tsp1->e_time = t_cur;
211 tsp1->e_type = EV_TMPO;
212 tsp1->e_data1 = (int8_t)aux1;
213
214 p_cur = e_ins(tsp1, ep_adj(p_cur, 0, t_cur))->e_fwd;
215 eh_ins(tsp1, EH_TMPO);
216
217 if (verbose)
218 printf("%8ld: Tempo = %d\n", t_cur, aux1);
219 CM_OK;
220 }
221
222 if (CM_USTR("inst")) { /* !inst = n */
223
224 if (!CM_CHR('='))
225 CM_NOGO;
226
227 if (!CM_NUM)
228 CM_NOGO;
229
230 aux1 = (int16_t)QQnum;
231
232 if (E_NULL EQ (tsp1 = e_alc(E_SIZE2))) {
233
234 nospace("!inst");
235 CM_NOGO;
236 }
237
238 tsp1->e_time = t_cur;
239 tsp1->e_type = EV_INST;
240 tsp1->e_data1 = (int8_t)curgrp;
241 tsp1->e_data2 = (int8_t)aux1;
242
243 p_cur = e_ins(tsp1, ep_adj(p_cur, 0, t_cur))->e_fwd;
244 eh_ins(tsp1, EH_INST);
245
246 if (verbose)
247 printf("%8ld: group %d set to inst %d\n",
248 t_cur, curgrp, aux1);
249 CM_OK;
250 }
251
252 if (CM_USTR("tuning")) { /* !tuning = n */
253
254 if (!CM_CHR('='))
255 CM_NOGO;
256
257 if (!CM_NUM)
258 CM_NOGO;
259
260 aux1 = (int16_t)QQnum;
261
262 if (E_NULL EQ (tsp1 = e_alc(E_SIZE2))) {
263
264 nospace("!tuning");
265 CM_NOGO;
266 }
267
268 tsp1->e_time = t_cur;
269 tsp1->e_type = EV_TUNE;
270 tsp1->e_data1 = (int8_t)aux1;
271
272 p_cur = e_ins(tsp1, ep_adj(p_cur, 0, t_cur))->e_fwd;
273 eh_ins(tsp1, EH_TUNE);
274
275 if (verbose)
276 printf("%8ld: Tuning %d selected\n", t_cur, aux1);
277 CM_OK;
278 }
279
280 if (CM_USTR("trans")) { /* !trans = {+|-} n */
281
282 if (!CM_CHR('='))
283 CM_NOGO;
284
285 if (CM_CHR('+')) {
286
287 } else if (CM_CHR('-')) {
288
289 } else
290 CM_NOGO;
291
292 if (!CM_NUM)
293 CM_NOGO;
294
295 aux1 = (int16_t)QQnum;
296
297 if (QQchr EQ '-')
298 aux1 = -aux1;
299
300 if (E_NULL EQ (tsp1 = e_alc(E_SIZE2))) {
301
302 nospace("!trans");
303 CM_NOGO;
304 }
305
306 tsp1->e_time = t_cur;
307 tsp1->e_type = EV_TRNS;
308 tsp1->e_data1 = (int8_t)curgrp;
309 tsp1->e_lft = (struct s_entry *)aux1;
310
311 p_cur = e_ins(tsp1, ep_adj(p_cur, 0, t_cur))->e_fwd;
312 eh_ins(tsp1, EH_TRNS);
313
314 if (verbose)
315 printf("%8ld: Transposition set to %d\n",
316 t_cur, aux1);
317 CM_OK;
318 }
319
320 if (CM_USTR("dyn")) { /* !dyn = n */
321
322 if (!CM_CHR('='))
323 CM_NOGO;
324
325 if (!CM_NUM)
326 CM_NOGO;
327
328 aux1 = (int16_t)QQnum;
329
330 if (E_NULL EQ (tsp1 = e_alc(E_SIZE2))) {
331
332 nospace("!dyn");
333 CM_NOGO;
334 }
335
336 tsp1->e_time = t_cur;
337 tsp1->e_type = EV_DYN;
338 tsp1->e_data1 = (int8_t)curgrp;
339 tsp1->e_data2 = (int8_t)aux1;
340
341 p_cur = e_ins(tsp1, ep_adj(p_cur, 0, t_cur))->e_fwd;
342 eh_ins(tsp1, EH_DYN);
343
344 if (verbose)
345 printf("%8ld: Dynamics set to %d\n", t_cur, aux1);
346 CM_OK;
347 }
348
349 if (CM_USTR("loc")) { /* !loc = n */
350
351 if (!CM_CHR('='))
352 CM_NOGO;
353
354 if (!CM_NUM)
355 CM_NOGO;
356
357 aux1 = (int16_t)QQnum;
358
359 if (E_NULL EQ (tsp1 = e_alc(E_SIZE2))) {
360
361 nospace("!loc");
362 CM_NOGO;
363 }
364
365 tsp1->e_time = t_cur;
366 tsp1->e_type = EV_LOCN;
367 tsp1->e_data1 = (int8_t)curgrp;
368 tsp1->e_data2 = (int8_t)aux1;
369
370 p_cur = e_ins(tsp1, ep_adj(p_cur, 0, t_cur))->e_fwd;
371 eh_ins(tsp1, EH_LOCN);
372
373 if (verbose)
374 printf("%8ld: Location set to %d\n", t_cur, aux1);
375 CM_OK;
376 }
377
378 if (CM_USTR("goto")) { /* !goto n @ n */
379
380 if (!CM_NUM)
381 CM_NOGO;
382
383 curtime = QQnum * 48;
384
385 if (!CM_CHR('@'))
386 CM_NOGO;
387
388 if (!CM_NUM)
389 CM_NOGO;
390
391 sc_goto(curtime += QQnum);
392
393 if (verbose)
394 printf("\n<Score time set to %ld>\n", t_cur);
395
396 CM_OK;
397 }
398
399 if (CM_USTR("pos")) { /* !pos = n @ n */
400
401 if (!CM_CHR('='))
402 CM_NOGO;
403
404 if (!CM_NUM)
405 CM_NOGO;
406
407 curtime = QQnum * 48;
408
409 if (!CM_CHR('@'))
410 CM_NOGO;
411
412 if (!CM_NUM)
413 CM_NOGO;
414
415 t_cur = (curtime += QQnum);
416 p_cur = frfind(t_cur, 0);
417
418 if (verbose)
419 printf("\n<Score time set to %ld>\n", t_cur);
420
421 CM_OK;
422 }
423
424 if (CM_USTR("beat")) { /* !beat = n */
425
426 if (!CM_CHR('='))
427 CM_NOGO;
428
429 if (!CM_NUM)
430 CM_NOGO;
431
432 t_cur = QQnum * 48;
433 p_cur = frfind(t_cur, 0);
434
435 if (verbose)
436 printf("\n<Score time set to %ld>\n", t_cur);
437
438 CM_OK;
439 }
440
441 if (CM_USTR("frame")) { /* !frame = n */
442
443 if (!CM_CHR('='))
444 CM_NOGO;
445
446 if (!CM_NUM)
447 CM_NOGO;
448
449 t_cur = QQnum;
450 p_cur = frfind(t_cur, 0);
451
452 if (verbose)
453 printf("\n<Score time set to %ld>\n", t_cur);
454
455 CM_OK;
456 }
457
458 if (CM_USTR("score")) { /* !score = n */
459
460 if (!CM_CHR('='))
461 CM_NOGO;
462
463 if (!CM_NUM)
464 CM_NOGO;
465
466 if (QQnum > 127)
467 CM_NOGO;
468
469 thescore = (int16_t)QQnum;
470
471 selscor(thescore);
472
473 if (verbose)
474 printf("\n<Score %d selected>\n", thescore);
475 CM_OK;
476 }
477
478 if (CM_USTR("weight")) { /* !weight = n */
479
480 if (!CM_CHR('='))
481 CM_NOGO;
482
483 if (!CM_NUM)
484 CM_NOGO;
485
486 if (QQnum > 100L)
487 CM_NOGO;
488
489 noteper = QQnum;
490
491 if (verbose)
492 printf("<Note weight = %ld percent>\n", noteper);
493
494 CM_OK;
495 }
496
497 if (CM_USTR("snap")) { /* !snap */
498
499 SEsnap();
500 CM_OK;
501 }
502
503 if (CM_USTR("wait")) { /* !wait */
504
505 waitcr();
506 CM_OK;
507 }
508
509 if (CM_USTR("stop")) { /* !stop */
510
511 if (E_NULL EQ (tsp1 = e_alc(E_SIZE1))) {
512
513 nospace("!stop");
514 CM_NOGO;
515 }
516
517 tsp1->e_time = t_cur;
518 tsp1->e_type = EV_STOP;
519
520 p_cur = e_ins(tsp1, ep_adj(p_cur, 0, t_cur))->e_fwd;
521
522 if (verbose)
523 printf("%8ld: Stop entered\n", t_cur);
524 CM_OK;
525 }
526
527 if (CM_USTR("clear")) { /* !clear {n | * | $} */
528
529 if (CM_NUM) {
530
531 aux1 = (int16_t)QQnum;
532 sc_clr(aux1);
533
534 if (verbose)
535 printf("\n<Score %d cleared>\n", aux1);
536
537 CM_OK;
538 }
539
540 if (CM_CHR('*')) {
541
542 scinit();
543
544 if (verbose)
545 printf("\n<All scores cleared>\n");
546
547 CM_OK;
548 }
549
550 if (CM_CHR('$')) {
551
552 sc_clr(curscor);
553
554 if (verbose)
555 printf("\n<Current score (%d) cleared>\n", curscor);
556
557 CM_OK;
558 }
559
560 CM_NOGO;
561 }
562
563 if (CM_USTR("show")) { /* !show {active | names | sections} */
564
565 if (CM_USTR("active")) {
566
567 printf("<Active scores:\n");
568 aux1 = aux2 = 0;
569
570 for (aux3 = 0; aux3 < 4; aux3++) {
571
572 printf("<");
573
574 for (aux4 = 0; aux4 < 16; aux4++) {
575
576 if (scores[aux1]) {
577
578 printf("%3d ", aux1);
579 ++aux2;
580
581 } else {
582
583 printf("... ");
584 }
585
586 ++aux1;
587 }
588
589 printf(">\n");
590 }
591
592 printf("<%d active scores, score %d is current>\n\n",
593 aux2, curscor);
594 CM_OK;
595 }
596
597 if (CM_USTR("names")) {
598
599 printf("<Active score names:>\n");
600 aux2 = 0;
601
602 for (aux1 = 0; aux1 < 128; aux1++) {
603
604 if (scores[aux1] NE E_NULL) {
605
606 printf("<%3d: ", aux1);
607 chptr = scname[aux1];
608 printf("[$%08.8lx, $%08.8lx] ",
609 scores[aux1], chptr);
610
611 for (aux3 = 0; aux3 < 16; aux3++)
612 printf("%c", (*chptr++ & 0xFF));
613
614 printf(">\n");
615 ++aux2;
616 }
617 }
618
619 printf("<%d active scores, %d is current>\n\n",
620 aux2, curscor);
621
622 CM_OK;
623 }
624
625 if (CM_USTR("sections")) {
626
627 printf("<Active sections:>\n");
628 aux1 = aux2 = 0;
629
630 for (aux3 = 0; aux3 < 5; aux3++) {
631
632 printf("<");
633
634 for (aux4 = 0; aux4 < 10; aux4++) {
635
636 if (seclist[curscor][aux1]) {
637
638 printf("%3d ", aux1);
639 ++aux2;
640
641 } else {
642
643 printf("... ");
644 }
645
646 ++aux1;
647 }
648
649 printf(">\n");
650 }
651
652 printf("<%d active sections, %d is current>\n\n",
653 aux2, cursect);
654 CM_OK;
655 }
656
657 CM_NOGO;
658 }
659
660 if (CM_USTR("find")) { /* !find {l | r} n */
661
662 if (CM_UCHR('l'))
663 aux1 = 1;
664 else if (CM_UCHR('r'))
665 aux1 = 0;
666 else
667 CM_NOGO;
668
669 if (!CM_NUM)
670 CM_NOGO;
671
672 tsp1 = frfind(QQnum, aux1);
673
674 if (tsp1 NE E_NULL) {
675
676 if (verbose)
677 printf("\n<FIND: Found %ld at $%08.8lx>\n\n",
678 QQnum, tsp1);
679
680 p_cur = tsp1;
681 t_cur = QQnum;
682
683 } else {
684
685 if (verbose)
686 printf("<FIND: Found the current score empty>\n\n");
687
688 CM_NOGO;
689 }
690
691 CM_OK;
692 }
693
694 if (CM_USTR("chase")) { /* !chase */
695
696 if (E_NULL EQ (tsp1 = p_cur)) {
697
698 printf("<CHASE: Current score not active>\n\n");
699 CM_NOGO;
700 }
701
702 tsp2 = tsp1;
703
704 while (tsp2) {
705
706 tsp3 = &spool[0];
707
708 if (tsp2 LT tsp3) {
709
710 printf("\nCHASE: Error\n");
711 printf("** Bad pointer: $%08.8lx\n", tsp2);
712 printf("** spool: $%08.8lx, pspool: $%08.8lx\n",
713 &spool[0], pspool);
714 CM_NOGO;
715 }
716
717 tsp3 = &spool[MAX_SE-1];
718
719 if (tsp2 GT tsp3) {
720
721 printf("\nCHASE: Error\n");
722 printf("** Bad pointer: $%08.8lx\n", tsp2);
723 printf("** spool: $%08.8lx, pspool: $%08.8lx\n",
724 &spool[0], pspool);
725 CM_NOGO;
726 }
727
728 SEdump(tsp2);
729 tsp2 = tsp2->e_fwd;
730
731 if ((tsp1 EQ tsp2) OR
732 (tsp2->e_type EQ EV_SCORE)) {
733
734 printf("-- End of chain --\n\n");
735 break;
736 }
737 }
738
739 CM_OK;
740 }
741
742 if (CM_USTR("verbose")) { /* !verbose */
743
744 verbose = TRUE;
745 CM_OK;
746 }
747
748 if (CM_USTR("quiet")) { /* !quiet */
749
750 verbose = FALSE;
751 CM_OK;
752 }
753
754 if (CM_USTR("test")) { /* !test */
755
756 testing = TRUE;
757 CM_OK;
758 }
759
760 if (CM_USTR("normal")) { /* !normal */
761
762 testing = FALSE;
763 CM_OK;
764 }
765
766 if (CM_USTR("end")) { /* !end */
767
768 if (verbose)
769 printf("\n<End command encountered>\n");
770
771 endflg = TRUE;
772 CM_OK;
773 }
774
775 CM_NOGO;
776}
777
778/*
779 =============================================================================
780 Qnote() -- 'note' and rest syntax equation
781
782 "val [#] oct [+|-|/n]" | "r n / m"
783 e.g.: a#0+ .. a#0- .. c3/4 , r2/1 d3 , e3
784 =============================================================================
785*/
786
787int16_t Qnote(void)
788{
789 struct n_entry *nsp1;
790
791 if (CM_UCHR('r')) { /* try for a rest */
792
793 if (!CM_NUM)
794 CM_NOGO;
795
796 nrest = QQnum;
797
798 if (!CM_CHR('/'))
799 CM_NOGO;
800
801 if (!CM_NUM)
802 CM_NOGO;
803
804 dvwork = 192L;
805 noteval = dvwork / QQnum;
806 t_cur += (noteval * nrest);
807 p_cur = ep_adj(p_cur, 0, t_cur);
808
809 if (verbose)
810 printf("%8ld: <rest>\n", t_cur);
811
812 CM_OK;
813 }
814
815 if (!CM_ULIST(nlist)) /* try for a note */
816 CM_NOGO;
817
818 notepit = QQlnum;
819
820 if (CM_CHR('#'))
821 sharp = 1;
822 else
823 sharp = 0;
824
825 if (!CM_DIG)
826 CM_NOGO;
827
828 if (QQdig > '7')
829 CM_NOGO;
830
831 notenum = octab[QQdig - '0'] + notetab[notepit] + sharp;
832
833 if (CM_CHR('+')) { /* output note begin */
834
835 if (E_NULL EQ (nsp1 = (struct n_entry *)e_alc(E_SIZE1))) {
836
837 nospace("note event");
838 CM_NOGO;
839 }
840
841 noteon = t_cur;
842 p_cur = insnevt(nsp1, EV_NBEG, curgrp, notenum, 64);
843
844 if (verbose)
845 printf("%8ld: Note %3d ON\n", noteon, notenum);
846
847 CM_OK;
848 }
849
850 if (CM_CHR('-')) { /* output note end */
851
852 if (E_NULL EQ (nsp1 = (struct n_entry *)e_alc(E_SIZE1))) {
853
854 nospace("note event");
855 CM_NOGO;
856 }
857
858 noteoff = t_cur;
859 p_cur = insnevt(nsp1, EV_NEND, curgrp, notenum, 64);
860
861 if (verbose)
862 printf("%8ld: Note %3d OFF\n", noteoff, notenum);
863
864 CM_OK;
865 }
866
867 if (CM_CHR('/')) { /* output note begin and end, given value */
868
869 if (!CM_NUM)
870 CM_NOGO;
871
872 dvwork = 192L;
873 noteval = dvwork / QQnum;
874 noteon = t_cur;
875 dvwork = 100L;
876 noteoff = t_cur + ((noteper * noteval) / dvwork);
877
878 if (E_NULL EQ (nsp1 = (struct n_entry *)e_alc(E_SIZE1))) {
879
880 nospace("note event");
881 CM_NOGO;
882 }
883
884 p_cur = insnevt(nsp1, EV_NBEG, curgrp, notenum, 64);
885
886 if (E_NULL EQ (nsp1 = (struct n_entry *)e_alc(E_SIZE1))) {
887
888 nospace("note event");
889 CM_NOGO;
890 }
891
892 p_cur = ep_adj(p_cur, 0, (t_cur = noteoff));
893
894 insnevt(nsp1, EV_NEND, curgrp, notenum, 64);
895
896 p_cur = ep_adj(p_cur, 0, (t_cur = noteon));
897
898 if (verbose)
899 printf("%8ld: Note %3d ON at %8ld, OFF at %8ld\n",
900 t_cur, notenum, noteon, noteoff);
901
902 CM_OK;
903 }
904
905 /* output note begin and end, use previous value */
906
907 noteon = t_cur;
908 dvwork = 100L;
909 noteoff = t_cur + ((noteval * noteper) / dvwork);
910
911 if (E_NULL EQ (nsp1 = (struct n_entry *)e_alc(E_SIZE1))) {
912
913 nospace("note event");
914 CM_NOGO;
915 }
916
917 p_cur = insnevt(nsp1, EV_NBEG, curgrp, notenum, 64);
918
919 if (E_NULL EQ (nsp1 = (struct n_entry *)e_alc(E_SIZE1))) {
920
921 nospace("note event");
922 CM_NOGO;
923 }
924
925 p_cur = ep_adj(p_cur, 0, (t_cur = noteoff));
926
927 insnevt(nsp1, EV_NEND, curgrp, notenum, 64);
928
929 p_cur = ep_adj(p_cur, 0, (t_cur = noteon));
930
931 if (verbose)
932 printf("%8ld: Note %3d ON at %8ld, OFF at %8ld\n",
933 t_cur, notenum, noteon, noteoff);
934 CM_OK;
935}
936
937/*
938 =============================================================================
939 Qadv() -- 'adv' syntax equation
940 =============================================================================
941*/
942
943int16_t Qadv(void)
944{
945 if (CM_CHR('.')) { /* advance by 1 frame */
946
947 ++t_cur;
948 p_cur = ep_adj(p_cur, 0, t_cur);
949 CM_OK;
950 }
951
952 if (CM_CHR(',')) { /* advance by current note value */
953
954 t_cur += noteval;
955 p_cur = ep_adj(p_cur, 0, t_cur);
956 CM_OK;
957 }
958
959 if (CM_CHR(';')) { /* avance to next beat */
960
961 dvwork = 48L;
962 t_cur = ((t_cur / dvwork) + 1L) * 48L;
963 p_cur = ep_adj(p_cur, 0, t_cur);
964 CM_OK;
965 }
966
967 if (CM_CHR(':')) { /* advance by one beat interval */
968
969 t_cur += 48L;
970 p_cur = ep_adj(p_cur, 0, t_cur);
971 CM_OK;
972 }
973
974 CM_NOGO;
975}
976
977/*
978 =============================================================================
979 Qseq() -- 'seq' syntax equation
980 =============================================================================
981*/
982
983int16_t Qseq(void)
984{
985 CM_DBLK;
986
987 if (!*QQip)
988 CM_OK;
989
990 if (Qnote() OR Qadv() OR (Qevent() AND !endflg)) {
991
992 CM_DBLK;
993
994 if (!*QQip)
995 return(QQsw);
996
997 while (QQsw AND !endflg) {
998
999 if (!Qadv())
1000 if (!Qnote())
1001 Qevent();
1002
1003 CM_DBLK;
1004
1005 if (!*QQip)
1006 return(QQsw);
1007 }
1008 }
1009
1010 return(QQsw);
1011}
1012
1013/*
1014 =============================================================================
1015 sqinit() -- setup score interpreter variables
1016 =============================================================================
1017*/
1018
1019void sqinit(void)
1020{
1021 verbose = FALSE;
1022 testing = FALSE;
1023 endflg = FALSE;
1024
1025 noteval = 48L; /* default value = 1/4 note (192/48) */
1026 noteper = 80L; /* default weight = 80 percent */
1027
1028 curtime = t_cur = t_ctr = 0L;
1029 t_bak = t_cur - TO_BAK;
1030 t_fwd = t_cur + TO_FWD;
1031
1032 p_bak = p_cur = p_ctr = p_fwd = E_NULL;
1033
1034 curgrp = 0;
1035 thescore = 0;
1036}
1037
1038/*
1039 =============================================================================
1040 sqscan(ip) -- scans the string at 'ip' and converts the event
1041 descriptions therein to events in the current score. Returns
1042 the value of the parser switch.
1043 =============================================================================
1044*/
1045
1046int16_t sqscan(int8_t *ip)
1047{
1048 endflg = FALSE;
1049 CMinit(ip);
1050
1051 if (!Qseq())
1052 CMstat("Syntax error");
1053
1054 return(QQsw);
1055}
1056
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