1 | /*
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2 | =============================================================================
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3 | delpnts.c -- delete point(s) from (truncate) a function
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4 | Version 14 -- 1989-12-19 -- 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 DEBUGIT 0
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9 |
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10 | #define D_INSPNT 0 /* debug inspnt() */
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11 |
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12 | #include "all.h"
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13 |
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14 | extern int16_t edfunc(int16_t n);
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15 | extern uint16_t setipl(uint16_t arg);
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16 | extern void modinst(void);
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17 | extern void pntsel(void);
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18 | extern void showpt(int16_t q);
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19 |
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20 | #define PT_SIZE (sizeof (struct instpnt))
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21 |
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22 | #if DEBUGIT
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23 | extern short debugsw;
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24 |
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25 | short debugdf = 1;
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26 | #endif
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27 |
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28 | extern int16_t curfunc;
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29 | extern int16_t curvce;
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30 | extern int16_t pntsv;
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31 | extern int16_t subj;
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32 |
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33 | extern int16_t finival[];
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34 | extern int16_t fnoff[];
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35 |
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36 | extern struct instdef vbufs[];
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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 | delpnts() -- deletes the current point and any points to the right
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45 | of it in the current function in the current voice.
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46 | =============================================================================
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47 | */
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48 |
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49 | int16_t delpnts(void)
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50 | {
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51 | register struct instpnt *pp;
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52 | register int8_t *pp1, *pp2;
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53 | register int16_t np, pt1, i, pif, cf;
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54 | struct idfnhdr *fp;
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55 | struct instdef *vp;
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56 | uint16_t *fpu;
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57 | int16_t pt2, nmv, oldi;
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58 |
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59 | vp = &vbufs[curvce]; /* voice buffer pointer */
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60 | fp = &vp->idhfnc[curfunc]; /* function pointer */
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61 |
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62 | pif = 0x00FF & fp->idfpif; /* number of points in function */
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63 | np = pif - subj; /* number of points to delete */
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64 | pt1 = (0x00FF & fp->idfpt1) + subj; /* first point to delete */
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65 |
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66 | #if DEBUGIT
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67 | if (debugsw AND debugdf) {
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68 |
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69 | printf("delpnts(): curfunc = %d curvce = %d\n",
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70 | curfunc, curvce);
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71 |
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72 | printf("delpnts(): idfpt1=%d, pif=%d, np=%d, pt1=%d, vp=$%lX, fp=$%lX\n",
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73 | (0x00FF & fp->idfpt1), pif, np, pt1, vp, fp);
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74 | }
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75 | #endif
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76 |
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77 | if (np LE 0) /* have to delete at least 1 point */
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78 | return(FAILURE);
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79 |
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80 | if (subj GE pif) /* make sure point number is valid */
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81 | return(FAILURE);
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82 |
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83 | if ((pif - np) < 0) /* make sure we have enough points */
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84 | return(FAILURE);
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85 |
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86 | if ((subj + np) GE (pif + 1)) /* check the span */
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87 | return(FAILURE);
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88 |
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89 | pt2 = pt1 + np; /* move from point */
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90 | nmv = NIPNTS - pt2; /* move count */
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91 |
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92 | #if DEBUGIT
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93 | if (debugsw AND debugdf) {
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94 |
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95 | printf("delpnts(): pt2=%d, nmv=%d\n", pt2, nmv);
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96 |
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97 | printf(" fnc pif\n");
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98 |
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99 | for (cf = 0; cf < NFINST; cf++)
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100 | printf(" %3d %3d%s\n",
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101 | cf, vp->idhfnc[cf].idfpif,
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102 | (cf EQ curfunc) ? " <-- curfunc" : "");
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103 |
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104 | printf("\n");
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105 | }
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106 | #endif
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107 |
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108 | /* |
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109 |
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110 | */
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111 | oldi = setipl(FPU_DI); /* +++++ disable FPU interrupts +++++ */
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112 |
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113 | fpu = io_fpu + FPU_OFNC + (curvce << 8); /* get fpu base */
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114 |
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115 | for (i = 0; i < NFINST; i++) { /* stop all functions for this voice */
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116 |
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117 | fp = &vp->idhfnc[i]; /* point at the function */
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118 |
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119 | *(fpu + (fnoff[i] << 4) + FPU_TCTL) =
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120 | (fp->idftmd = (fp->idftmd & ~3) | 1);
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121 | }
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122 |
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123 | fp = &vp->idhfnc[curfunc]; /* point at the function */
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124 |
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125 | if (subj) { /* deleting trailing points */
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126 |
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127 | /* move points down */
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128 |
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129 | pp1 = &vp->idhpnt[pt1];
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130 | pp2 = &vp->idhpnt[pt2];
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131 |
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132 | for (i = nmv * PT_SIZE; i > 0; i--)
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133 | *pp1++ = *pp2++;
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134 |
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135 | /* adjust total points remaining */
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136 |
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137 | vp->idhplft += np;
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138 |
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139 | /* adjust number of points in this function */
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140 |
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141 | vp->idhfnc[curfunc].idfpif -= np;
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142 |
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143 | /* adjust starting points in other functions */
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144 |
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145 | for (cf = curfunc + 1; cf < NFINST; cf++)
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146 | vp->idhfnc[cf].idfpt1 -= np;
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147 |
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148 | setipl(oldi); /* +++++ restore interrupts +++++ */
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149 |
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150 | edfunc(curfunc); /* set new current point */
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151 | subj -= 1;
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152 | /* |
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153 |
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154 | */
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155 | } else { /* deleting all points */
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156 |
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157 | /* reset first point in function */
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158 |
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159 | pp = &vp->idhpnt[fp->idfpt1];
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160 |
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161 | pp->iptim = FPU_MINT;
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162 | pp->ipval = finival[curfunc];
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163 | pp->ipvmlt = 0;
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164 | pp->ipvsrc = SM_NONE;
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165 | pp->ipact = AC_NULL;
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166 | pp->ippar1 = 0;
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167 | pp->ippar2 = 0;
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168 | pp->ippar3 = 0;
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169 |
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170 | /* adjust functions */
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171 |
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172 | if (np > 1) { /* if deleting more points than 1 ... */
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173 |
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174 | --nmv; /* one less point to move */
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175 | ++pt1; /* start one slot up */
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176 |
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177 | /* move points down */
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178 |
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179 | pp1 = &vp->idhpnt[pt1];
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180 | pp2 = &vp->idhpnt[pt2];
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181 |
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182 | for (i = nmv * PT_SIZE; i > 0; i--)
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183 | *pp1++ = *pp2++;
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184 |
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185 | /* adjust total points remaining */
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186 |
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187 | vp->idhplft += (np - 1);
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188 |
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189 | /* adjust number of points in this function */
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190 |
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191 | vp->idhfnc[curfunc].idfpif -= (np - 1);
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192 |
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193 | /* adjust starting points in other functions */
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194 |
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195 | for (cf = curfunc + 1; cf < NFINST; cf++)
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196 | vp->idhfnc[cf].idfpt1 -= (np - 1);
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197 | }
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198 |
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199 | setipl(oldi); /* restore interrupts */
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200 |
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201 | edfunc(curfunc); /* make point 0 current */
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202 | subj = 0;
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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 DEBUGIT
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209 | if (debugsw AND debugdf) {
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210 |
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211 | printf("delpnts(): plft = %3d pif = %3d subj = %3d\n",
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212 | vp->idhplft, vp->idhfnc[curfunc].idfpif, subj);
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213 |
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214 | printf(" fnc pif\n");
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215 |
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216 | for (cf = 0; cf < NFINST; cf++)
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217 | printf(" %3d %3d%s\n",
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218 | cf, vp->idhfnc[cf].idfpif,
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219 | (cf EQ curfunc) ? " <-- curfunc" : "");
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220 |
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221 | printf("\n");
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222 | }
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223 | #endif
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224 |
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225 | pntsel();
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226 | pntsv = 0;
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227 | showpt(1);
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228 | modinst();
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229 |
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230 | return(SUCCESS);
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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 |
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237 | /*
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238 | =============================================================================
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239 | inspnt() -- insert a new point into a function
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240 | =============================================================================
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241 | */
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242 |
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243 | int16_t inspnt(struct instdef *ip, int16_t fn, int16_t inpnt)
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244 | {
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245 | register int8_t *fp1, *fp2;
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246 | register int16_t i, j, k, l, npts;
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247 | int16_t topnt, frompt, oldi;
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248 |
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249 | if (ip->idhplft EQ 0) /* see if instrument has points left */
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250 | return(FALSE);
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251 |
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252 | if (ip->idhfnc[fn].idfpif EQ 99) /* see if function is full */
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253 | return(FALSE);
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254 |
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255 | topnt = NIPNTS - ip->idhplft; /* calculate move parameters */
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256 | frompt = topnt - 1;
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257 | npts = frompt - inpnt;
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258 | i = topnt;
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259 | j = frompt;
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260 |
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261 | #if D_INSPNT
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262 | if (debugsw)
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263 | printf("inspnt(): fn=%d, in=%d, to=%d, from=%d, npts=%d, pif=%d\r\n",
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264 | fn, inpnt, topnt, frompt, npts, ip->idhfnc[fn].idfpif);
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265 | #endif
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266 |
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267 | /* |
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268 |
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269 | */
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270 | oldi = setipl(FPU_DI); /* disable FPU interrupts */
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271 |
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272 | /* ++++++++++++++++++++++++ FPU interrupts disabled +++++++++++++++++++++++++ */
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273 |
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274 | for (k = 0; k < npts; k++) { /* move things up */
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275 |
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276 | fp1 = &ip->idhpnt[i--];
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277 | fp2 = &ip->idhpnt[j--];
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278 |
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279 | for (l = 0; l < sizeof (struct instpnt); l++)
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280 | *fp1++ = *fp2++;
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281 | }
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282 |
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283 | for (i = fn + 1; i < NFINST; i++) { /* update point numbers */
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284 |
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285 | ++ip->idhfnc[i].idfpt1; /* first point */
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286 | ++ip->idhfnc[i].idfcpt; /* current point */
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287 | }
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288 |
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289 | setipl(oldi); /* restore interrupts */
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290 |
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291 | /* ++++++++++++++++++++++++++ Interrupts restored +++++++++++++++++++++++++++ */
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292 |
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293 | ++ip->idhfnc[fn].idfpif; /* update point totals */
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294 | --ip->idhplft;
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295 |
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296 | #if D_INSPNT
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297 | if (debugsw)
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298 | printf("inspnt(): idfpif=%d, idhplft=%d\r\n",
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299 | ip->idhfnc[fn].idfpif, ip->idhplft);
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300 | #endif
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301 |
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302 | return(TRUE);
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303 | }
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304 |
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