source: buchla-68k/ram/delpnts.c

Last change on this file was b28c09e, checked in by Thomas Lopatic <thomas@…>, 7 years ago

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File size: 6.3 KB
Line 
1/*
2 =============================================================================
3 delpnts.c -- delete point(s) from (truncate) a function
4 Version 14 -- 1989-12-19 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#define DEBUGIT 0
9
10#define D_INSPNT 0 /* debug inspnt() */
11
12#include "ram.h"
13
14#define PT_SIZE (sizeof (struct instpnt))
15
16#if DEBUGIT
17short debugdf = 1;
18#endif
19
20/*
21 =============================================================================
22 delpnts() -- deletes the current point and any points to the right
23 of it in the current function in the current voice.
24 =============================================================================
25*/
26
27int16_t delpnts(void)
28{
29 struct instpnt *pp;
30 int8_t *pp1, *pp2;
31 int16_t np, pt1, i, pif, cf;
32 struct idfnhdr *fp;
33 struct instdef *vp;
34 volatile uint16_t *fpu;
35 int16_t pt2, nmv, oldi;
36
37 vp = &vbufs[curvce]; /* voice buffer pointer */
38 fp = &vp->idhfnc[curfunc]; /* function pointer */
39
40 pif = 0x00FF & fp->idfpif; /* number of points in function */
41 np = pif - subj; /* number of points to delete */
42 pt1 = (0x00FF & fp->idfpt1) + subj; /* first point to delete */
43
44#if DEBUGIT
45 if (debugsw AND debugdf) {
46
47 printf("delpnts(): curfunc = %d curvce = %d\n",
48 curfunc, curvce);
49
50 printf("delpnts(): idfpt1=%d, pif=%d, np=%d, pt1=%d, vp=$%lX, fp=$%lX\n",
51 (0x00FF & fp->idfpt1), pif, np, pt1, vp, fp);
52 }
53#endif
54
55 if (np LE 0) /* have to delete at least 1 point */
56 return(FAILURE);
57
58 if (subj GE pif) /* make sure point number is valid */
59 return(FAILURE);
60
61 if ((pif - np) < 0) /* make sure we have enough points */
62 return(FAILURE);
63
64 if ((subj + np) GE (pif + 1)) /* check the span */
65 return(FAILURE);
66
67 pt2 = pt1 + np; /* move from point */
68 nmv = NIPNTS - pt2; /* move count */
69
70#if DEBUGIT
71 if (debugsw AND debugdf) {
72
73 printf("delpnts(): pt2=%d, nmv=%d\n", pt2, nmv);
74
75 printf(" fnc pif\n");
76
77 for (cf = 0; cf < NFINST; cf++)
78 printf(" %3d %3d%s\n",
79 cf, vp->idhfnc[cf].idfpif,
80 (cf EQ curfunc) ? " <-- curfunc" : "");
81
82 printf("\n");
83 }
84#endif
85
86
87 oldi = setipl(FPU_DI); /* +++++ disable FPU interrupts +++++ */
88
89 fpu = io_fpu + FPU_OFNC + (curvce << 8); /* get fpu base */
90
91 for (i = 0; i < NFINST; i++) { /* stop all functions for this voice */
92
93 fp = &vp->idhfnc[i]; /* point at the function */
94
95 *(fpu + (fnoff[i] << 4) + FPU_TCTL) =
96 (uint16_t)(fp->idftmd = (fp->idftmd & ~3) | 1);
97 }
98
99 fp = &vp->idhfnc[curfunc]; /* point at the function */
100
101 if (subj) { /* deleting trailing points */
102
103 /* move points down */
104
105 pp1 = (int8_t *)&vp->idhpnt[pt1];
106 pp2 = (int8_t *)&vp->idhpnt[pt2];
107
108 for (i = nmv * (int16_t)PT_SIZE; i > 0; i--)
109 *pp1++ = *pp2++;
110
111 /* adjust total points remaining */
112
113 vp->idhplft = (int8_t)(vp->idhplft + np);
114
115 /* adjust number of points in this function */
116
117 vp->idhfnc[curfunc].idfpif =
118 (int8_t)(vp->idhfnc[curfunc].idfpif - np);
119
120 /* adjust starting points in other functions */
121
122 for (cf = curfunc + 1; cf < NFINST; cf++)
123 vp->idhfnc[cf].idfpt1 =
124 (int8_t)(vp->idhfnc[cf].idfpt1 - np);
125
126 setipl(oldi); /* +++++ restore interrupts +++++ */
127
128 edfunc(curfunc); /* set new current point */
129 subj -= 1;
130
131 } else { /* deleting all points */
132
133 /* reset first point in function */
134
135 pp = &vp->idhpnt[(int16_t)fp->idfpt1];
136
137 pp->iptim = FPU_MINT;
138 pp->ipval = finival[curfunc];
139 pp->ipvmlt = 0;
140 pp->ipvsrc = SM_NONE;
141 pp->ipact = AC_NULL;
142 pp->ippar1 = 0;
143 pp->ippar2 = 0;
144 pp->ippar3 = 0;
145
146 /* adjust functions */
147
148 if (np > 1) { /* if deleting more points than 1 ... */
149
150 --nmv; /* one less point to move */
151 ++pt1; /* start one slot up */
152
153 /* move points down */
154
155 pp1 = (int8_t *)&vp->idhpnt[pt1];
156 pp2 = (int8_t *)&vp->idhpnt[pt2];
157
158 for (i = nmv * (int16_t)PT_SIZE; i > 0; i--)
159 *pp1++ = *pp2++;
160
161 /* adjust total points remaining */
162
163 vp->idhplft = (int8_t)(vp->idhplft + (np - 1));
164
165 /* adjust number of points in this function */
166
167 vp->idhfnc[curfunc].idfpif =
168 (int8_t)(vp->idhfnc[curfunc].idfpif - (np - 1));
169
170 /* adjust starting points in other functions */
171
172 for (cf = curfunc + 1; cf < NFINST; cf++)
173 vp->idhfnc[cf].idfpt1 =
174 (int8_t)(vp->idhfnc[cf].idfpt1 - (np - 1));
175 }
176
177 setipl(oldi); /* restore interrupts */
178
179 edfunc(curfunc); /* make point 0 current */
180 subj = 0;
181 }
182
183
184#if DEBUGIT
185 if (debugsw AND debugdf) {
186
187 printf("delpnts(): plft = %3d pif = %3d subj = %3d\n",
188 vp->idhplft, vp->idhfnc[curfunc].idfpif, subj);
189
190 printf(" fnc pif\n");
191
192 for (cf = 0; cf < NFINST; cf++)
193 printf(" %3d %3d%s\n",
194 cf, vp->idhfnc[cf].idfpif,
195 (cf EQ curfunc) ? " <-- curfunc" : "");
196
197 printf("\n");
198 }
199#endif
200
201 pntsel();
202 pntsv = 0;
203 showpt(1);
204 modinst();
205
206 return(SUCCESS);
207}
208
209/*
210 =============================================================================
211 inspnt() -- insert a new point into a function
212 =============================================================================
213*/
214
215int16_t inspnt(struct instdef *ip, int16_t fn, int16_t inpnt)
216{
217 register int8_t *fp1, *fp2;
218 register int16_t i, j, k, l, pcnt;
219 int16_t topnt, frompt, oldi;
220
221 if (ip->idhplft EQ 0) /* see if instrument has points left */
222 return(FALSE);
223
224 if (ip->idhfnc[fn].idfpif EQ 99) /* see if function is full */
225 return(FALSE);
226
227 topnt = NIPNTS - ip->idhplft; /* calculate move parameters */
228 frompt = topnt - 1;
229 pcnt = frompt - inpnt;
230 i = topnt;
231 j = frompt;
232
233#if D_INSPNT
234 if (debugsw)
235 printf("inspnt(): fn=%d, in=%d, to=%d, from=%d, npts=%d, pif=%d\r\n",
236 fn, inpnt, topnt, frompt, pcnt, ip->idhfnc[fn].idfpif);
237#endif
238
239
240 oldi = setipl(FPU_DI); /* disable FPU interrupts */
241
242/* ++++++++++++++++++++++++ FPU interrupts disabled +++++++++++++++++++++++++ */
243
244 for (k = 0; k < pcnt; k++) { /* move things up */
245
246 fp1 = (int8_t *)&ip->idhpnt[i--];
247 fp2 = (int8_t *)&ip->idhpnt[j--];
248
249 for (l = 0; l < (int16_t)sizeof (struct instpnt); l++)
250 *fp1++ = *fp2++;
251 }
252
253 for (i = fn + 1; i < NFINST; i++) { /* update point numbers */
254
255 ++ip->idhfnc[i].idfpt1; /* first point */
256 ++ip->idhfnc[i].idfcpt; /* current point */
257 }
258
259 setipl(oldi); /* restore interrupts */
260
261/* ++++++++++++++++++++++++++ Interrupts restored +++++++++++++++++++++++++++ */
262
263 ++ip->idhfnc[fn].idfpif; /* update point totals */
264 --ip->idhplft;
265
266#if D_INSPNT
267 if (debugsw)
268 printf("inspnt(): idfpif=%d, idhplft=%d\r\n",
269 ip->idhfnc[fn].idfpif, ip->idhplft);
270#endif
271
272 return(TRUE);
273}
274
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