[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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[6262b5c] | 11 | #include "all.h"
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[e225e77] | 12 |
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| 13 | extern void clrnl(void);
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| 14 | extern void clrsctl(void);
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| 15 | extern void dsrpmod(void);
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| 16 | extern void dssect(void);
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| 17 | extern void quiet(int16_t _1, int16_t _2);
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| 18 | extern void sc_adv(void);
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| 19 | extern void scupd(void);
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| 20 | extern void sdwins(void);
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| 21 | extern void se_disp(struct s_entry *ep, int16_t sd, struct gdsel *gdstb[], int16_t cf);
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| 22 | extern void sreset(void);
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| 23 |
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[f40a309] | 24 | /* variables defined elsewhere */
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| 25 |
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| 26 | #if DEBUG_GO
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| 27 | extern short verbose, testing;
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| 28 | #endif
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| 29 |
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[7258c6a] | 30 | extern int16_t recsw;
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| 31 | extern int16_t ndisp;
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| 32 | extern int16_t sd;
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| 33 | extern int16_t swctrl;
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| 34 | extern int16_t swflag;
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[f40a309] | 35 |
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| 36 | extern struct gdsel *gdfsep;
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| 37 |
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| 38 | extern struct gdsel *gdstbc[];
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| 39 | extern struct gdsel *gdstbn[];
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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 |
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| 45 | /*
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| 46 | =============================================================================
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| 47 | sc_goto(tval) -- position score display at time 'tval'
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| 48 | =============================================================================
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| 49 | */
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[7258c6a] | 50 |
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[f40a309] | 51 | int16_t sc_goto(int32_t tval)
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| 52 | {
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| 53 | register struct gdsel *gdsp;
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[7258c6a] | 54 | register struct s_entry *rp;
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| 55 | register int32_t tf, rt;
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[f40a309] | 56 | register int16_t mod48 = 48;
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| 57 |
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| 58 | #if CHECKPTR
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| 59 | Pcheck(p_fwd, "p_fwd - sc_goto entry");
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| 60 | Pcheck(p_ctr, "p_ctr - sc_goto entry");
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| 61 | Pcheck(p_bak, "p_bak - sc_goto entry");
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| 62 | Pcheck(p_cur, "p_cur - sc_goto entry");
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| 63 | #endif
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| 64 |
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| 65 | /* quick check of pointers so we don't crash */
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| 66 |
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| 67 | if ((p_fwd EQ E_NULL) OR (p_cur EQ E_NULL) OR
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| 68 | (p_bak EQ E_NULL) OR (p_ctr EQ E_NULL))
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| 69 | return(FAILURE);
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| 70 |
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| 71 | if (v_regs[5] & 0x0180) /* setup for VSDD bank 0 */
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| 72 | vbank(0);
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| 73 |
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| 74 | sd = D_FWD; /* set display and scroll direction */
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| 75 | swctrl = FALSE; /* stop scroll wheel */
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[9519422] | 76 | swflag = FALSE; /* ... */
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[f40a309] | 77 |
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| 78 | recsw = FALSE; /* force play mode on goto */
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| 79 | dsrpmod(); /* update video and LCD displays */
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| 80 |
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| 81 | if (ndisp EQ 2)
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| 82 | sreset(); /* reset highlighting if score is up */
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[e225e77] | 83 |
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[f40a309] | 84 | quiet(-1, -1); /* quiet the instrument */
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| 85 | clrnl(); /* clear note entry lists */
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| 86 | clrsctl(); /* clear slice control data */
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| 87 |
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| 88 | t_bak = tval - TO_BAK; /* set target time at p_bak */
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| 89 | t_fwd = t_bak; /* set target time at p_fwd */
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| 90 | t_ctr = tval; /* set target time at p_ctr */
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| 91 | t_cur = tval; /* set target time at p_cur */
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| 92 |
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| 93 | p_bak = frfind(t_bak, 0); /* position p_bak at t_bak */
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| 94 | p_cur = frfind(t_cur, 1); /* position p_cur at t_cur */
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| 95 | p_fwd = frfind(t_fwd, 1); /* position p_fwd at t_fwd */
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| 96 |
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| 97 | /* |
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| 98 |
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| 99 | */
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| 100 | /* reset the display pointers to the target time */
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| 101 |
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| 102 | if ((t_fwd LE 0) AND (p_fwd->e_type EQ EV_SCORE))
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| 103 | p_fwd = p_fwd->e_fwd; /* skip score header */
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| 104 |
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| 105 | rp = p_fwd; /* current forward event pointer */
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| 106 | rt = t_fwd; /* current forward event time */
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| 107 | tf = tval + TO_FWD; /* target event time */
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| 108 |
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| 109 | #if DEBUG_GO
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| 110 | if (verbose) {
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| 111 |
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| 112 | printf("## sc_goto(%8ld) ENTRY - tf: %8ld\n", tval, tf);
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| 113 |
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| 114 | printf(" t_bak: %8ld t_ctr: %8ld t_fwd: %8ld t_cur: %8ld\n",
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| 115 | t_bak, t_ctr, t_fwd, t_cur);
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| 116 |
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| 117 | printf(" p_bak: %08lX p_ctr: %08lX p_fwd: %08lX p_cur: %08lX\n",
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| 118 | p_bak, p_ctr, p_fwd, p_cur);
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| 119 | }
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| 120 | #endif
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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 |
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| 126 | while (rt++ LT tf) { /* advance p_fwd chain to tf */
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| 127 |
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| 128 | if (rp->e_type NE EV_FINI) { /* don't pass end of score */
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| 129 |
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| 130 | while (rp->e_time LE rt) { /* check event time */
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| 131 |
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| 132 | if (ndisp EQ 2) /* display event */
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| 133 | se_disp(rp, D_FWD, gdstbn, 0);
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| 134 |
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| 135 | rp = rp->e_fwd; /* point at next event */
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| 136 |
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| 137 | if (rp->e_type EQ EV_FINI) /* done if at end */
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| 138 | break;
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| 139 | }
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| 140 | }
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| 141 |
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| 142 | if (ndisp EQ 2) {
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| 143 |
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| 144 | if (0 EQ (rt % mod48)) { /* handle beat markers */
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| 145 |
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| 146 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 147 |
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| 148 | gdfsep = gdsp->next;
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| 149 |
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| 150 | gdsp->next = gdstbn[12];
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| 151 | gdsp->note = 0x1111;
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| 152 | gdsp->code = 1;
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| 153 |
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| 154 | gdstbn[12] = gdsp;
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| 155 | }
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| 156 | }
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| 157 |
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| 158 | sc_adv(); /* scroll the display */
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| 159 | }
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| 160 | }
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| 161 |
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| 162 | p_fwd = rp; /* update p_fwd for next event */
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| 163 | t_fwd = tf; /* update t_fwd */
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| 164 |
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| 165 | /* |
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| 166 |
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| 167 | */
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| 168 | /* execute & display things at current time to start things out right */
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| 169 |
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| 170 | if (ndisp EQ 2) /* if score is up ... */
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| 171 | dssect(); /* display section */
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| 172 |
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| 173 | rp = p_cur; /* current event pointer */
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| 174 | rt = t_cur; /* current event time */
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| 175 |
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| 176 | if ((rt LE 0) AND (rp->e_type EQ EV_SCORE)) /* skip score header */
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| 177 | rp = rp->e_fwd;
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| 178 |
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| 179 | if (rp->e_type NE EV_FINI) { /* if we aren't at end of score */
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| 180 |
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| 181 | while (rp->e_time EQ rt) { /* do events at current time */
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| 182 |
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| 183 | se_exec(rp, D_FWD); /* execute event */
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| 184 |
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| 185 | if (ndisp EQ 2)
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| 186 | se_disp(rp, D_FWD, gdstbc, 1); /* update center slice */
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| 187 |
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| 188 | rp = rp->e_fwd; /* point at next event */
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| 189 |
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| 190 | if (rp->e_type EQ EV_FINI) /* done if at end */
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| 191 | break;
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| 192 | }
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| 193 | }
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| 194 |
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| 195 | p_cur = rp; /* update p_cur */
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| 196 | p_ctr = rp; /* update p_ctr */
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| 197 |
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| 198 | if (ndisp EQ 2) { /* if score is up ... */
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| 199 |
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| 200 | scupd(); /* update event display */
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| 201 | sdwins(); /* refresh windows */
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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 |
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| 208 | #if DEBUG_GO
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| 209 | if (verbose) {
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| 210 |
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| 211 | printf("## sc_goto(%8ld) EXIT\n");
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| 212 |
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| 213 | printf(" t_bak: %8ld t_ctr: %8ld t_fwd: %8ld t_cur: %8ld\n",
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| 214 | t_bak, t_ctr, t_fwd, t_cur);
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| 215 |
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| 216 | printf(" p_bak: %08lx p_ctr: %08lx p_fwd: %08lx p_cur: %08lx\n",
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| 217 | p_bak, p_ctr, p_fwd, p_cur);
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| 218 | }
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| 219 | #endif
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| 220 |
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| 221 | #if CHECKPTR
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| 222 | Pcheck(p_fwd, "p_fwd - sc_goto exiting");
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| 223 | Pcheck(p_ctr, "p_ctr - sc_goto exiting");
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| 224 | Pcheck(p_bak, "p_bak - sc_goto exiting");
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| 225 | Pcheck(p_cur, "p_cur - sc_goto exiting");
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| 226 | #endif
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| 227 |
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| 228 | return(SUCCESS);
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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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[7258c6a] | 235 | /*
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[f40a309] | 236 | =============================================================================
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[7258c6a] | 237 | sc_refr() -- refresh the display to a particular time
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[f40a309] | 238 | =============================================================================
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| 239 | */
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| 240 |
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| 241 | int16_t sc_refr(int32_t t)
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| 242 | {
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| 243 | int16_t oldrs, rc;
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| 244 |
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[6262b5c] | 245 | oldrs = recsw; /* save recsw */
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| 246 | rc = sc_goto(t); /* refresh the display via a goto */
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| 247 | recsw = oldrs; /* restore recsw */
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| 248 | dsrpmod(); /* update display of recsw */
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| 249 | return(rc); /* return status from sc_goto */
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| 250 | }
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| 251 |
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