[f40a309] | 1 | /*
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| 2 | =============================================================================
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| 3 | scgoto.c -- position display at a given frame time
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| 4 | Version 48 -- 1988-09-23 -- D.N. Lynx Crowe
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| 5 | =============================================================================
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| 6 | */
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| 7 |
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| 8 | #define DEBUG_GO 0 /* define non-zero for sc_goto() debug */
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| 9 | #define CHECKPTR 0 /* define non-zero to check pointers */
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| 10 |
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| 11 | #include "hwdefs.h"
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| 12 | #include "stddefs.h"
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| 13 | #include "graphdef.h"
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| 14 | #include "score.h"
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| 15 | #include "scfns.h"
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| 16 | #include "memory.h"
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| 17 | #include "vsdd.h"
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| 18 | #include "slice.h"
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| 19 | #include "midas.h"
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| 20 |
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| 21 | /* variables defined elsewhere */
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| 22 |
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| 23 | #if DEBUG_GO
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| 24 | extern short verbose, testing;
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| 25 | #endif
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| 26 |
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| 27 | extern short recsw;
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| 28 | extern short ndisp;
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| 29 | extern short sd;
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| 30 | extern short swctrl;
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| 31 | extern short swflag;
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| 32 |
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| 33 | extern struct gdsel *gdfsep;
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| 34 |
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| 35 | extern struct gdsel *gdstbc[];
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| 36 | extern struct gdsel *gdstbn[];
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| 37 |
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| 38 | /* |
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| 39 |
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| 40 | */
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| 41 |
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| 42 | /*
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| 43 | =============================================================================
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| 44 | sc_goto(tval) -- position score display at time 'tval'
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| 45 | =============================================================================
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| 46 | */
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| 47 |
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| 48 | int
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| 49 | sc_goto(tval)
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| 50 | register long tval;
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| 51 | {
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| 52 | register struct gdsel *gdsp;
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| 53 | register struct s_entry *rp;
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| 54 | register long tf, rt;
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| 55 | register short mod48 = 48;
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| 56 |
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| 57 | #if CHECKPTR
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| 58 | Pcheck(p_fwd, "p_fwd - sc_goto entry");
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| 59 | Pcheck(p_ctr, "p_ctr - sc_goto entry");
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| 60 | Pcheck(p_bak, "p_bak - sc_goto entry");
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| 61 | Pcheck(p_cur, "p_cur - sc_goto entry");
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| 62 | #endif
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| 63 |
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| 64 | /* quick check of pointers so we don't crash */
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| 65 |
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| 66 | if ((p_fwd EQ E_NULL) OR (p_cur EQ E_NULL) OR
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| 67 | (p_bak EQ E_NULL) OR (p_ctr EQ E_NULL))
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| 68 | return(FAILURE);
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| 69 |
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| 70 | if (v_regs[5] & 0x0180) /* setup for VSDD bank 0 */
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| 71 | vbank(0);
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| 72 |
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| 73 | sd = D_FWD; /* set display and scroll direction */
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| 74 | swctrl = FALSE; /* stop scroll wheel */
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| 75 | swflag = FALSE; /* ... */
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| 76 |
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| 77 | recsw = FALSE; /* force play mode on goto */
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| 78 | dsrpmod(); /* update video and LCD displays */
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| 79 |
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| 80 | if (ndisp EQ 2)
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| 81 | sreset(); /* reset highlighting if score is up */
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| 82 |
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| 83 | quiet(); /* quiet the instrument */
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| 84 | clrnl(); /* clear note entry lists */
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| 85 | clrsctl(); /* clear slice control data */
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| 86 |
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| 87 | t_bak = tval - TO_BAK; /* set target time at p_bak */
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| 88 | t_fwd = t_bak; /* set target time at p_fwd */
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| 89 | t_ctr = tval; /* set target time at p_ctr */
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| 90 | t_cur = tval; /* set target time at p_cur */
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| 91 |
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| 92 | p_bak = frfind(t_bak, 0); /* position p_bak at t_bak */
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| 93 | p_cur = frfind(t_cur, 1); /* position p_cur at t_cur */
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| 94 | p_fwd = frfind(t_fwd, 1); /* position p_fwd at t_fwd */
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| 95 |
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| 96 | /* |
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| 97 |
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| 98 | */
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| 99 | /* reset the display pointers to the target time */
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| 100 |
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| 101 | if ((t_fwd LE 0) AND (p_fwd->e_type EQ EV_SCORE))
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| 102 | p_fwd = p_fwd->e_fwd; /* skip score header */
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| 103 |
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| 104 | rp = p_fwd; /* current forward event pointer */
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| 105 | rt = t_fwd; /* current forward event time */
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| 106 | tf = tval + TO_FWD; /* target event time */
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| 107 |
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| 108 | #if DEBUG_GO
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| 109 | if (verbose) {
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| 110 |
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| 111 | printf("## sc_goto(%8ld) ENTRY - tf: %8ld\n", tval, tf);
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| 112 |
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| 113 | printf(" t_bak: %8ld t_ctr: %8ld t_fwd: %8ld t_cur: %8ld\n",
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| 114 | t_bak, t_ctr, t_fwd, t_cur);
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| 115 |
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| 116 | printf(" p_bak: %08lX p_ctr: %08lX p_fwd: %08lX p_cur: %08lX\n",
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| 117 | p_bak, p_ctr, p_fwd, p_cur);
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| 118 | }
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| 119 | #endif
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| 120 |
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| 121 | /* |
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| 122 |
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| 123 | */
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| 124 |
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| 125 | while (rt++ LT tf) { /* advance p_fwd chain to tf */
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| 126 |
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| 127 | if (rp->e_type NE EV_FINI) { /* don't pass end of score */
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| 128 |
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| 129 | while (rp->e_time LE rt) { /* check event time */
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| 130 |
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| 131 | if (ndisp EQ 2) /* display event */
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| 132 | se_disp(rp, D_FWD, gdstbn, 0);
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| 133 |
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| 134 | rp = rp->e_fwd; /* point at next event */
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| 135 |
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| 136 | if (rp->e_type EQ EV_FINI) /* done if at end */
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| 137 | break;
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| 138 | }
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| 139 | }
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| 140 |
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| 141 | if (ndisp EQ 2) {
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| 142 |
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| 143 | if (0 EQ (rt % mod48)) { /* handle beat markers */
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| 144 |
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| 145 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 146 |
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| 147 | gdfsep = gdsp->next;
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| 148 |
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| 149 | gdsp->next = gdstbn[12];
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| 150 | gdsp->note = 0x1111;
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| 151 | gdsp->code = 1;
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| 152 |
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| 153 | gdstbn[12] = gdsp;
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| 154 | }
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| 155 | }
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| 156 |
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| 157 | sc_adv(); /* scroll the display */
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| 158 | }
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| 159 | }
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| 160 |
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| 161 | p_fwd = rp; /* update p_fwd for next event */
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| 162 | t_fwd = tf; /* update t_fwd */
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| 163 |
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| 164 | /* |
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| 165 |
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| 166 | */
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| 167 | /* execute & display things at current time to start things out right */
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| 168 |
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| 169 | if (ndisp EQ 2) /* if score is up ... */
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| 170 | dssect(); /* display section */
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| 171 |
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| 172 | rp = p_cur; /* current event pointer */
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| 173 | rt = t_cur; /* current event time */
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| 174 |
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| 175 | if ((rt LE 0) AND (rp->e_type EQ EV_SCORE)) /* skip score header */
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| 176 | rp = rp->e_fwd;
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| 177 |
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| 178 | if (rp->e_type NE EV_FINI) { /* if we aren't at end of score */
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| 179 |
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| 180 | while (rp->e_time EQ rt) { /* do events at current time */
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| 181 |
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| 182 | se_exec(rp, D_FWD); /* execute event */
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| 183 |
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| 184 | if (ndisp EQ 2)
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| 185 | se_disp(rp, D_FWD, gdstbc, 1); /* update center slice */
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| 186 |
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| 187 | rp = rp->e_fwd; /* point at next event */
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| 188 |
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| 189 | if (rp->e_type EQ EV_FINI) /* done if at end */
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| 190 | break;
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| 191 | }
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| 192 | }
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| 193 |
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| 194 | p_cur = rp; /* update p_cur */
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| 195 | p_ctr = rp; /* update p_ctr */
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| 196 |
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| 197 | if (ndisp EQ 2) { /* if score is up ... */
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| 198 |
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| 199 | scupd(); /* update event display */
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| 200 | sdwins(); /* refresh windows */
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| 201 | }
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| 202 |
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| 203 | /* |
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| 204 |
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| 205 | */
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| 206 |
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| 207 | #if DEBUG_GO
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| 208 | if (verbose) {
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| 209 |
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| 210 | printf("## sc_goto(%8ld) EXIT\n");
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| 211 |
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| 212 | printf(" t_bak: %8ld t_ctr: %8ld t_fwd: %8ld t_cur: %8ld\n",
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| 213 | t_bak, t_ctr, t_fwd, t_cur);
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| 214 |
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| 215 | printf(" p_bak: %08lx p_ctr: %08lx p_fwd: %08lx p_cur: %08lx\n",
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| 216 | p_bak, p_ctr, p_fwd, p_cur);
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| 217 | }
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| 218 | #endif
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| 219 |
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| 220 | #if CHECKPTR
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| 221 | Pcheck(p_fwd, "p_fwd - sc_goto exiting");
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| 222 | Pcheck(p_ctr, "p_ctr - sc_goto exiting");
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| 223 | Pcheck(p_bak, "p_bak - sc_goto exiting");
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| 224 | Pcheck(p_cur, "p_cur - sc_goto exiting");
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| 225 | #endif
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| 226 |
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| 227 | return(SUCCESS);
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| 228 | }
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| 229 |
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| 230 | /* |
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| 231 |
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| 232 | */
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| 233 |
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| 234 | /*
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| 235 | =============================================================================
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| 236 | sc_refr() -- refresh the display to a particular time
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| 237 | =============================================================================
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| 238 | */
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| 239 |
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| 240 | short
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| 241 | sc_refr(t)
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| 242 | long t;
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| 243 | {
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| 244 | short oldrs, rc;
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| 245 |
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| 246 | oldrs = recsw; /* save recsw */
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| 247 | rc = sc_goto(t); /* refresh the display via a goto */
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| 248 | recsw = oldrs; /* restore recsw */
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| 249 | dsrpmod(); /* update display of recsw */
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| 250 | return(rc); /* return status from sc_goto */
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| 251 | }
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