source: buchla-68k/ram/wsdsp.c@ fa38804

Last change on this file since fa38804 was fa38804, checked in by Thomas Lopatic <thomas@…>, 7 years ago

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1/*
2 =============================================================================
3 wsdsp.c -- MIDAS waveshape editor display driver
4 Version 35 -- 1988-09-09 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#include "ram.h"
9
10int16_t wavpal[16][3] = { /* waveshape display color palette */
11
12 {0, 0, 0}, /* 0 */
13 {3, 3, 3}, /* 1 */
14 {2, 2, 2}, /* 2 */
15 {0, 1, 1}, /* 3 (was 0, 1, 0) */
16 {1, 0, 1}, /* 4 */
17 {0, 1, 1}, /* 5 (was 0, 1, 0) */
18 {2, 1, 2}, /* 6 */
19 {0, 3, 0}, /* 7 */
20 {2, 0, 0}, /* 8 */
21 {2, 0, 2}, /* 9 */
22 {0, 0, 0}, /* 10 */
23 {2, 3, 3}, /* 11 */
24 {3, 3, 0}, /* 12 */
25 {3, 0, 0}, /* 13 */
26 {0, 0, 1}, /* 14 (was 0, 0, 2) */
27 {0, 0, 3} /* 15 */
28};
29
30/*
31 =============================================================================
32 advwcur() -- advance the waveshape display text cursor
33 =============================================================================
34*/
35
36void advwcur(void)
37{
38 register int16_t newcol;
39
40 newcol = stccol + 1;
41
42 if (newcol LE cfetp->frcol)
43 itcpos(stcrow, newcol);
44}
45
46/*
47 =============================================================================
48 hdraw(h) -- draw harmonic 'h' for the current waveshape
49 =============================================================================
50*/
51
52void hdraw(int16_t *hv, int16_t h)
53{
54 register int16_t bc, bx, by, j;
55
56 bx = (h << 4) + 4;
57
58 if (hv[h] < 0) {
59
60 by = WBOFF - ((-hv[h] * WBSF1) / WBSF2);
61 bc = WBCN;
62
63 } else {
64
65 by = WBOFF - ((hv[h] * WBSF1) / WBSF2);
66 bc = WBCP;
67 }
68
69 for (j = 0; j < 8; j++) {
70
71 lseg(bx, WBOFF, bx, by, bc);
72 ++bx;
73 }
74}
75
76/*
77 =============================================================================
78 dsws() -- display the current waveshape
79 =============================================================================
80*/
81
82void dsws(int16_t how)
83{
84 register struct instdef *ip;
85 register int16_t *fv, *hv, *ov;
86 register int16_t i;
87 int16_t cx;
88
89 cx = exp_c(wdbox[0][0]);
90
91 ip = &vbufs[curvce];
92 fv = curwslt ? &ip->idhwvbf : &ip->idhwvaf;
93 ov = curwslt ? &ip->idhwvbo : &ip->idhwvao;
94 hv = curwslt ? &ip->idhwvbh : &ip->idhwvah;
95
96 point = wdpoint;
97
98 if (v_regs[5] & 0x0180)
99 vbank(0);
100
101 if (how)
102 vbfill4(waveob, 128, wdbox[0][0], wdbox[0][1],
103 wdbox[0][2], wdbox[0][3], cx);
104
105 lseg(1, 133, 510, 133, WZBC); /* draw the zero line and ... */
106 lseg(1, (WPOFF << 1), 510, (WPOFF << 1), WZBC); /* ... bottom limit */
107
108 for (i = 0; i < NUMHARM; i++) /* draw the harmonics */
109 hdraw(hv, i);
110
111 for (i = 0; i < NUMWPNT; i++) { /* draw the values */
112
113 /* offset values */
114
115 wdpoint(((2 * i) + 2),
116 (WPOFF - (((ov[i] >> 5) * WPSF1) / WPSF2)), WOVC);
117
118 /* final values */
119
120 wdpoint(((2 * i) + 2),
121 (WPOFF - (((fv[i] >> 5) * WPSF1) / WPSF2)), WFVC);
122 }
123}
124
125/*
126 =============================================================================
127 wdswin() -- display a window
128 =============================================================================
129*/
130
131void wdswin(int16_t n)
132{
133 register int16_t cx, wval;
134 register int8_t wsgn;
135
136 cx = wdbox[n][5];
137 cx |= cx << 4;
138 cx |= cx << 8;
139
140 /* first, fill the box with the background color */
141
142 if (v_regs[5] & 0x0180)
143 vbank(0);
144
145 vbfill4(waveob, 128, wdbox[n][0], wdbox[n][1], wdbox[n][2],
146 wdbox[n][3], cx);
147
148 /* put in the box label */
149
150 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6], wdbox[n][7],
151 wdbxlb0[n], 14);
152
153 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6] + 1, wdbox[n][7],
154 wdbxlb1[n], 14);
155
156
157 switch (n) { /* final text - overlays above stuff */
158
159 case 0: /* points and bars */
160
161 dsws(0);
162 return;
163
164 case 2: /* waveshape - voice - instrument - slot */
165
166 sprintf(bfs, "%02d", curwave + 1);
167 tsplot4(waveob, 64,
168 exp_c(wsnmod[curvce][curwslt] ? WS_CHGC : wdbox[n][4]),
169 wdbox[n][6], wdbox[n][7] + WAVE_OFF, bfs, 14);
170
171 sprintf(bfs, "%02d", curvce + 1);
172 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6],
173 wdbox[n][7] + WVCE_OFF, bfs, 14);
174
175 sprintf(bfs, "%02d", curinst);
176 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6] + 1,
177 wdbox[n][7] + WINS_OFF, bfs, 14);
178
179 sprintf(bfs, "%c", curwslt + 'A');
180 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6] + 1,
181 wdbox[n][7] + WSLT_OFF, bfs, 14);
182
183 return;
184
185
186 case 4: /* point - offset - width - final */
187
188 sprintf(bfs, "%03d", curwpnt);
189 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6],
190 wdbox[n][7] + WPNT_OFF, bfs, 14);
191
192 if (curwoff < 0) {
193
194 wval = - curwoff;
195 wsgn = '-';
196
197 } else {
198
199 wval = curwoff;
200 wsgn = '+';
201 }
202
203 sprintf(bfs, "%c%04d", wsgn, wval);
204 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6],
205 wdbox[n][7] + WOFF_OFF, bfs, 14);
206
207 if (curwdth EQ NUMWIDS) {
208
209 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6] + 1,
210 wdbox[n][7], "Interp", 14);
211
212 } else {
213
214 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6] + 1,
215 wdbox[n][7], "Width", 14);
216
217 sprintf(bfs, "%01d", curwdth);
218 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6] + 1,
219 wdbox[n][7] + WDTH_OFF, bfs, 14);
220 }
221
222 if (curwfnl < 0) {
223
224 wval = - curwfnl;
225 wsgn = '-';
226
227 } else {
228
229 wval = curwfnl;
230 wsgn = '+';
231 }
232
233 sprintf(bfs, "%c%04d", wsgn, wval);
234 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6] + 1,
235 wdbox[n][7] + WFNL_OFF, bfs, 14);
236
237 return;
238
239 case 5: /* harmonic - value */
240
241 sprintf(bfs, "%02d", curwhrm + 1);
242 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6],
243 wdbox[n][7] + WHRM_OFF, bfs, 14);
244
245 if (curwhrv < 0) {
246
247 wval = - curwhrv;
248 wsgn = '-';
249
250 } else {
251
252 wval = curwhrv;
253 wsgn = '+';
254 }
255
256 sprintf(bfs, "%c%03d", wsgn, wval);
257 tsplot4(waveob, 64, wdbox[n][4], wdbox[n][6] + 1,
258 wdbox[n][7] + WHRV_OFF, bfs, 14);
259
260 return;
261
262 }
263}
264
265/*
266 =============================================================================
267 wwins() -- display all waveshape editor windows
268 =============================================================================
269*/
270
271void wwins(void)
272{
273 register int16_t i;
274
275 for (i = 0; i < 6; i++)
276 wdswin(i);
277}
278
279/*
280 =============================================================================
281 wdpoint() -- plot a point for the lseg function
282 =============================================================================
283*/
284
285void wdpoint(int16_t x, int16_t y, int16_t pen)
286{
287 if (v_regs[5] & 0x0180)
288 vbank(0);
289
290 vputp(wdoct, x, y, pen);
291}
292
293/*
294 =============================================================================
295 wdbord() -- draw the border for the waveshape display
296 =============================================================================
297*/
298
299void wdbord(void)
300{
301 point = wdpoint;
302
303 lseg( 0, 0, 511, 0, WBORD); /* outer border */
304 lseg(511, 0, 511, 349, WBORD);
305 lseg(511, 349, 0, 349, WBORD);
306 lseg( 0, 349, 0, 0, WBORD);
307
308 lseg( 0, 308, 511, 308, WBORD); /* windows - H lines */
309 lseg(511, 321, 0, 321, WBORD);
310
311 lseg(175, 322, 175, 349, WBORD); /* windows - V lines */
312 lseg(231, 322, 231, 349, WBORD);
313 lseg(399, 322, 399, 349, WBORD);
314}
315
316/*
317 =============================================================================
318 clrws() -- initialize waveshape to null values
319 =============================================================================
320*/
321
322void clrws(void)
323{
324 register struct instdef *ip;
325
326 ip = &vbufs[curvce];
327
328 if (curwslt) {
329
330 memsetw(ip->idhwvbh, 0, NUMHARM);
331 memsetw(ip->idhwvbo, 0, NUMWPNT);
332 memsetw(ip->idhwvbf, 0, NUMWPNT);
333
334 } else {
335
336 memsetw(ip->idhwvah, 0, NUMHARM);
337 memsetw(ip->idhwvao, 0, NUMWPNT);
338 memsetw(ip->idhwvaf, 0, NUMWPNT);
339 }
340
341 clrwsa();
342
343 lstwpnt = wplast = curwpnt;
344
345 lstwoff = wvlast = curwfnl = curwoff = 0;
346
347 curwhrv = 0;
348
349 updfpu(); /* update the FPU */
350 wsnmod[curvce][curwslt] = TRUE; /* tag WS as modified */
351}
352
353/*
354 =============================================================================
355 iniwslb() -- initialize waveshape library
356 =============================================================================
357*/
358
359void iniwslb(void)
360{
361 register int16_t i, j;
362
363 memsetw(wsnmod, FALSE, (sizeof wsnmod) / 2);
364
365 for (i = 0; i < NUMWAVS; i++) {
366
367 for (j = 0; j < NUMWPNT; j++) {
368
369 wslib[i].final[j] = ((j + 1) << 8) ^ 0x8000;
370 wslib[i].offset[j] = ((j + 1) << 8) ^ 0x8000;
371 }
372
373 memsetw(wslib[i].harmon, 0, NUMHARM); /* zero harmonics */
374 }
375}
376
377/*
378 =============================================================================
379 wsdsp() -- put up the waveshape display
380 =============================================================================
381*/
382
383void wsdsp(void)
384{
385 waveob = &v_score[0]; /* setup object pointer */
386 obj0 = &v_curs0[0]; /* setup cursor object pointer */
387 wdoct = &v_obtab[WAVEOBJ]; /* setup object control table pointer */
388
389 wpntsv = 0; /* point selection state = unselected */
390 newws(); /* set editing variables */
391
392 dswap(); /* initialize display */
393
394 if (v_regs[5] & 0x0180)
395 vbank(0);
396
397 memsetw(waveob, 0, 32767);
398 memsetw(waveob+32767L, 0, 12033);
399
400 SetObj(WAVEOBJ, 0, 0, waveob, 512, 350, 0, 0, WAVEFL, -1);
401 SetObj( 0, 0, 1, obj0, 16, 16, WCURX, WCURY, OBFL_00, -1);
402
403 arcurs(WDCURS); /* setup arrow cursor object */
404 itcini(WDCURS); /* setup text cursor object */
405
406 wdbord(); /* draw the border */
407 wwins();
408
409 SetPri(WAVEOBJ, WAVEPRI);
410 SetPri(0, GCPRI);
411 setgc(WCURX, WCURY); /* display the graphic cursor */
412
413 vsndpal(wavpal); /* send the palette */
414}
415
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