| 1 | gwlarson | 3.1 | /* Copyright (c) 1998 Silicon Graphics, Inc. */ | 
| 2 |  |  |  | 
| 3 |  |  | #ifndef lint | 
| 4 |  |  | static char SCCSid[] = "$SunId$ SGI"; | 
| 5 |  |  | #endif | 
| 6 |  |  |  | 
| 7 |  |  | /* | 
| 8 |  |  | * Routines for tone-mapping LogLuv encoded pixels. | 
| 9 |  |  | */ | 
| 10 |  |  |  | 
| 11 |  |  | #include <stdio.h> | 
| 12 |  |  | #include <math.h> | 
| 13 |  |  | #include "tiffio.h" | 
| 14 |  |  | #include "tmprivat.h" | 
| 15 |  |  | #include "uvcode.h" | 
| 16 |  |  |  | 
| 17 |  |  | #ifndef BSD | 
| 18 |  |  | #define bzero(d,n)              (void)memset(d,0,n) | 
| 19 |  |  | #endif | 
| 20 |  |  | #define uvflgop(p,uv,op)        ((p)->rgbflg[(uv)>>5] op (1L<<((uv)&0x1f))) | 
| 21 |  |  | #define isuvset(p,uv)           uvflgop(p,uv,&) | 
| 22 |  |  | #define setuv(p,uv)             uvflgop(p,uv,|=) | 
| 23 |  |  | #define clruv(p,uv)             uvflgop(p,uv,&=~) | 
| 24 |  |  | #define clruvall(p)             bzero((MEM_PTR)(p)->rgbflg,sizeof((p)->rgbflg)) | 
| 25 |  |  |  | 
| 26 |  |  | #define U_NEU                   0.210526316 | 
| 27 |  |  | #define V_NEU                   0.473684211 | 
| 28 |  |  |  | 
| 29 |  |  | static MEM_PTR  luv32Init(); | 
| 30 |  |  | static void     luv32NewSpace(); | 
| 31 |  |  | static MEM_PTR  luv24Init(); | 
| 32 |  |  | static void     luv24NewSpace(); | 
| 33 |  |  | extern void     free(); | 
| 34 |  |  |  | 
| 35 |  |  | typedef struct { | 
| 36 |  |  | int     offset;                 /* computed luminance offset */ | 
| 37 |  |  | BYTE    rgbval[1<<16][3];       /* computed RGB value for given uv */ | 
| 38 |  |  | uint32  rgbflg[1<<(16-5)];      /* flags for computed values */ | 
| 39 |  |  | } LUV32DATA;                    /* LogLuv 32-bit conversion data */ | 
| 40 |  |  |  | 
| 41 |  |  | #define UVSCALE                 410. | 
| 42 |  |  | #define UVNEU                   ((int)(UVSCALE*U_NEU)<<8 \ | 
| 43 |  |  | | (int)(UVSCALE*V_NEU)) | 
| 44 |  |  |  | 
| 45 |  |  | static struct tmPackage  luv32Pkg = {   /* 32-bit package functions */ | 
| 46 |  |  | luv32Init, luv32NewSpace, free | 
| 47 |  |  | }; | 
| 48 |  |  | static int      luv32Reg = -1;          /* 32-bit package reg. number */ | 
| 49 |  |  |  | 
| 50 |  |  | typedef struct { | 
| 51 |  |  | int     offset;                 /* computed luminance offset */ | 
| 52 |  |  | BYTE    rgbval[1<<14][3];       /* computed rgb value for uv index */ | 
| 53 |  |  | uint32  rgbflg[1<<(14-5)];      /* flags for computed values */ | 
| 54 |  |  | } LUV24DATA;                    /* LogLuv 24-bit conversion data */ | 
| 55 |  |  |  | 
| 56 |  |  | static struct tmPackage  luv24Pkg = {   /* 24-bit package functions */ | 
| 57 |  |  | luv24Init, luv24NewSpace, free | 
| 58 |  |  | }; | 
| 59 |  |  | static int      luv24Reg = -1;          /* 24-bit package reg. number */ | 
| 60 |  |  |  | 
| 61 |  |  | static int      uv14neu = -1;           /* neutral index for 14-bit (u',v') */ | 
| 62 |  |  |  | 
| 63 |  |  |  | 
| 64 |  |  | static | 
| 65 |  |  | uv2rgb(rgb, tm, uvp)                    /* compute RGB from uv coordinate */ | 
| 66 |  |  | BYTE    rgb[3]; | 
| 67 |  |  | register struct tmStruct        *tm; | 
| 68 |  |  | double  uvp[2]; | 
| 69 |  |  | {       /* Should check that tm->inppri==TM_XYZPRIM beforehand... */ | 
| 70 |  |  | double  d, x, y; | 
| 71 | gwlarson | 3.2 | COLOR   XYZ, RGB; | 
| 72 | gwlarson | 3.1 | /* convert to XYZ */ | 
| 73 |  |  | d = 1./(6.*uvp[0] - 16.*uvp[1] + 12.); | 
| 74 |  |  | x = 9.*uvp[0] * d; | 
| 75 |  |  | y = 4.*uvp[1] * d; | 
| 76 |  |  | XYZ[CIEY] = 1./tm->inpsf; | 
| 77 |  |  | XYZ[CIEX] = x/y * XYZ[CIEY]; | 
| 78 |  |  | XYZ[CIEZ] = (1.-x-y)/y * XYZ[CIEY]; | 
| 79 |  |  | /* convert to RGB and clip */ | 
| 80 |  |  | colortrans(RGB, tm->cmat, XYZ); | 
| 81 |  |  | clipgamut(RGB, XYZ[CIEY], CGAMUT_LOWER, cblack, cwhite); | 
| 82 |  |  | /* perform final scaling & gamma */ | 
| 83 |  |  | d = tm->clf[RED] * RGB[RED]; | 
| 84 |  |  | rgb[RED] = d>=.999 ? 255 : (int)(256.*pow(d, 1./tm->mongam)); | 
| 85 |  |  | d = tm->clf[GRN] * RGB[GRN]; | 
| 86 |  |  | rgb[GRN] = d>=.999 ? 255 : (int)(256.*pow(d, 1./tm->mongam)); | 
| 87 |  |  | d = tm->clf[BLU] * RGB[BLU]; | 
| 88 |  |  | rgb[BLU] = d>=.999 ? 255 : (int)(256.*pow(d, 1./tm->mongam)); | 
| 89 |  |  | } | 
| 90 |  |  |  | 
| 91 |  |  |  | 
| 92 |  |  | static TMbright | 
| 93 |  |  | compmeshift(li, uvp)                    /* compute mesopic color shift */ | 
| 94 |  |  | TMbright        li;             /* encoded world luminance */ | 
| 95 |  |  | double  uvp[2];                 /* world (u',v') -> returned desaturated */ | 
| 96 |  |  | { | 
| 97 | gwlarson | 3.2 | double  scotrat, d; | 
| 98 |  |  |  | 
| 99 |  |  | if (li >= BMESUPPER) | 
| 100 |  |  | return(li); | 
| 101 |  |  | scotrat = 1.33/9.*(6.*uvp[0]-16.*uvp[1]+12.)/uvp[0] - 1.68; | 
| 102 |  |  | if (li <= BMESLOWER) { | 
| 103 |  |  | d = 0.; | 
| 104 |  |  | uvp[0] = U_NEU; uvp[1] = V_NEU; | 
| 105 |  |  | } else { | 
| 106 |  |  | d = (tmLuminance(li) - LMESLOWER)/(LMESUPPER - LMESLOWER); | 
| 107 |  |  | uvp[0] = d*uvp[0] + (1.-d)*U_NEU; | 
| 108 |  |  | uvp[1] = d*uvp[1] + (1.-d)*V_NEU; | 
| 109 |  |  | } | 
| 110 |  |  | d = li + (double)TM_BRTSCALE*log(d + (1.-d)*scotrat/2.26); | 
| 111 |  |  | return((TMbright)(d+.5)); | 
| 112 | gwlarson | 3.1 | } | 
| 113 |  |  |  | 
| 114 |  |  |  | 
| 115 |  |  | static int | 
| 116 |  |  | uvpencode(uvp)                  /* encode (u',v') coordinates */ | 
| 117 |  |  | double  uvp[2]; | 
| 118 |  |  | { | 
| 119 |  |  | register int    vi, ui; | 
| 120 |  |  |  | 
| 121 |  |  | if (uvp[1] < UV_VSTART) | 
| 122 |  |  | return(-1); | 
| 123 |  |  | vi = (uvp[1] - UV_VSTART)*(1./UV_SQSIZ); | 
| 124 |  |  | if (vi >= UV_NVS) | 
| 125 |  |  | return(-1); | 
| 126 |  |  | if (uvp[0] < uv_row[vi].ustart) | 
| 127 |  |  | return(-1); | 
| 128 |  |  | ui = (uvp[0] - uv_row[vi].ustart)*(1./UV_SQSIZ); | 
| 129 |  |  | if (ui >= uv_row[vi].nus) | 
| 130 |  |  | return(-1); | 
| 131 |  |  | return(uv_row[vi].ncum + ui); | 
| 132 |  |  | } | 
| 133 |  |  |  | 
| 134 |  |  |  | 
| 135 |  |  | static int | 
| 136 |  |  | uvpdecode(uvp, c)               /* decode (u',v') index */ | 
| 137 |  |  | double  uvp[2]; | 
| 138 |  |  | int     c; | 
| 139 |  |  | { | 
| 140 |  |  | int     upper, lower; | 
| 141 |  |  | register int    ui, vi; | 
| 142 |  |  |  | 
| 143 |  |  | if (c < 0 || c >= UV_NDIVS) | 
| 144 |  |  | return(-1); | 
| 145 |  |  | lower = 0;                      /* binary search */ | 
| 146 |  |  | upper = UV_NVS; | 
| 147 |  |  | do { | 
| 148 |  |  | vi = (lower + upper) >> 1; | 
| 149 |  |  | ui = c - uv_row[vi].ncum; | 
| 150 |  |  | if (ui > 0) | 
| 151 |  |  | lower = vi; | 
| 152 |  |  | else if (ui < 0) | 
| 153 |  |  | upper = vi; | 
| 154 |  |  | else | 
| 155 |  |  | break; | 
| 156 |  |  | } while (upper - lower > 1); | 
| 157 |  |  | vi = lower; | 
| 158 |  |  | ui = c - uv_row[vi].ncum; | 
| 159 |  |  | uvp[0] = uv_row[vi].ustart + (ui+.5)*UV_SQSIZ; | 
| 160 |  |  | uvp[1] = UV_VSTART + (vi+.5)*UV_SQSIZ; | 
| 161 |  |  | return(0); | 
| 162 |  |  | } | 
| 163 |  |  |  | 
| 164 |  |  |  | 
| 165 |  |  | int | 
| 166 |  |  | tmCvLuv32(ls, cs, luvs, len)            /* convert raw 32-bit LogLuv values */ | 
| 167 |  |  | TMbright        *ls; | 
| 168 |  |  | BYTE    *cs; | 
| 169 |  |  | uint32  *luvs; | 
| 170 |  |  | int     len; | 
| 171 |  |  | { | 
| 172 |  |  | static char     funcName[] = "tmCvLuv32"; | 
| 173 |  |  | double  uvp[2]; | 
| 174 |  |  | register LUV32DATA      *ld; | 
| 175 |  |  | register int    i, j; | 
| 176 |  |  | /* check arguments */ | 
| 177 |  |  | if (tmTop == NULL) | 
| 178 |  |  | returnErr(TM_E_TMINVAL); | 
| 179 |  |  | if (ls == NULL | luvs == NULL | len < 0) | 
| 180 |  |  | returnErr(TM_E_ILLEGAL); | 
| 181 |  |  | /* check package registration */ | 
| 182 |  |  | if (luv32Reg < 0 && (luv32Reg = tmRegPkg(&luv32Pkg)) < 0) | 
| 183 |  |  | returnErr(TM_E_CODERR1); | 
| 184 |  |  | /* get package data */ | 
| 185 |  |  | if ((ld = (LUV32DATA *)tmPkgData(tmTop,luv32Reg)) == NULL) | 
| 186 |  |  | returnErr(TM_E_NOMEM); | 
| 187 |  |  | /* convert each pixel */ | 
| 188 |  |  | for (i = len; i--; ) { | 
| 189 |  |  | j = luvs[i] >> 16;              /* get luminance */ | 
| 190 |  |  | if (j & 0x8000)                 /* negative luminance */ | 
| 191 | gwlarson | 3.3 | ls[i] = TM_NOBRT;       /* assign bogus value */ | 
| 192 | gwlarson | 3.1 | else                            /* else convert to lnL */ | 
| 193 |  |  | ls[i] = (BRT2SCALE*j >> 8) - ld->offset; | 
| 194 |  |  | if (cs == TM_NOCHROM)           /* no color? */ | 
| 195 |  |  | continue; | 
| 196 |  |  | /* get chrominance */ | 
| 197 |  |  | if (tmTop->flags & TM_F_MESOPIC && ls[i] < BMESUPPER) { | 
| 198 |  |  | uvp[0] = 1./UVSCALE*((luvs[i]>>8 & 0xff) + .5); | 
| 199 |  |  | uvp[1] = 1./UVSCALE*((luvs[i] & 0xff) + .5); | 
| 200 |  |  | ls[i] = compmeshift(ls[i], uvp); | 
| 201 | gwlarson | 3.2 | j = tmTop->flags&TM_F_BW || ls[i]<BMESLOWER | 
| 202 | gwlarson | 3.1 | ? UVNEU | 
| 203 |  |  | : (int)(uvp[0]*UVSCALE)<<8 | 
| 204 |  |  | | (int)(uvp[1]*UVSCALE); | 
| 205 |  |  | } else { | 
| 206 |  |  | j = tmTop->flags&TM_F_BW ? UVNEU : luvs[i]&0xffff; | 
| 207 |  |  | } | 
| 208 |  |  | if (!isuvset(ld, j)) { | 
| 209 |  |  | uvp[0] = 1./UVSCALE*((luvs[i]>>8 & 0xff) + .5); | 
| 210 |  |  | uvp[1] = 1./UVSCALE*((luvs[i] & 0xff) + .5); | 
| 211 |  |  | uv2rgb(ld->rgbval[j], tmTop, uvp); | 
| 212 |  |  | setuv(ld, j); | 
| 213 |  |  | } | 
| 214 |  |  | cs[3*i  ] = ld->rgbval[j][RED]; | 
| 215 |  |  | cs[3*i+1] = ld->rgbval[j][GRN]; | 
| 216 |  |  | cs[3*i+2] = ld->rgbval[j][BLU]; | 
| 217 |  |  | } | 
| 218 |  |  | returnOK; | 
| 219 |  |  | } | 
| 220 |  |  |  | 
| 221 |  |  |  | 
| 222 |  |  | int | 
| 223 |  |  | tmCvLuv24(ls, cs, luvs, len)            /* convert raw 24-bit LogLuv values */ | 
| 224 |  |  | TMbright        *ls; | 
| 225 |  |  | BYTE    *cs; | 
| 226 |  |  | uint32  *luvs; | 
| 227 |  |  | int     len; | 
| 228 |  |  | { | 
| 229 |  |  | char    funcName[] = "tmCvLuv24"; | 
| 230 |  |  | double  uvp[2]; | 
| 231 |  |  | register LUV24DATA      *ld; | 
| 232 |  |  | register int    i, j; | 
| 233 |  |  | /* check arguments */ | 
| 234 |  |  | if (tmTop == NULL) | 
| 235 |  |  | returnErr(TM_E_TMINVAL); | 
| 236 |  |  | if (ls == NULL | luvs == NULL | len < 0) | 
| 237 |  |  | returnErr(TM_E_ILLEGAL); | 
| 238 |  |  | /* check package registration */ | 
| 239 |  |  | if (luv24Reg < 0 && (luv24Reg = tmRegPkg(&luv24Pkg)) < 0) | 
| 240 |  |  | returnErr(TM_E_CODERR1); | 
| 241 |  |  | /* get package data */ | 
| 242 |  |  | if ((ld = (LUV24DATA *)tmPkgData(tmTop,luv24Reg)) == NULL) | 
| 243 |  |  | returnErr(TM_E_NOMEM); | 
| 244 |  |  | /* convert each pixel */ | 
| 245 |  |  | for (i = len; i--; ) { | 
| 246 |  |  | j = luvs[i] >> 14;              /* get luminance */ | 
| 247 |  |  | ls[i] = (BRT2SCALE*j >> 6) - ld->offset; | 
| 248 |  |  | if (cs == TM_NOCHROM)           /* no color? */ | 
| 249 |  |  | continue; | 
| 250 |  |  | /* get chrominance */ | 
| 251 |  |  | if (tmTop->flags & TM_F_MESOPIC && ls[i] < BMESUPPER) { | 
| 252 |  |  | if (uvpdecode(uvp, luvs[i]&0x3fff) < 0) { | 
| 253 |  |  | uvp[0] = U_NEU;         /* should barf? */ | 
| 254 |  |  | uvp[1] = V_NEU; | 
| 255 |  |  | } | 
| 256 |  |  | ls[i] = compmeshift(ls[i], uvp); | 
| 257 | gwlarson | 3.2 | if (tmTop->flags&TM_F_BW || ls[i]<BMESLOWER | 
| 258 | gwlarson | 3.1 | || (j = uvpencode(uvp)) < 0) | 
| 259 |  |  | j = uv14neu; | 
| 260 |  |  | } else { | 
| 261 |  |  | j = tmTop->flags&TM_F_BW ? uv14neu : luvs[i]&0x3fff; | 
| 262 |  |  | } | 
| 263 |  |  | if (!isuvset(ld, j)) { | 
| 264 |  |  | if (uvpdecode(uvp, j) < 0) { | 
| 265 | gwlarson | 3.2 | uvp[0] = U_NEU; uvp[1] = V_NEU; | 
| 266 | gwlarson | 3.1 | } | 
| 267 |  |  | uv2rgb(ld->rgbval[j], tmTop, uvp); | 
| 268 |  |  | setuv(ld, j); | 
| 269 |  |  | } | 
| 270 |  |  | cs[3*i  ] = ld->rgbval[j][RED]; | 
| 271 |  |  | cs[3*i+1] = ld->rgbval[j][GRN]; | 
| 272 |  |  | cs[3*i+2] = ld->rgbval[j][BLU]; | 
| 273 |  |  | } | 
| 274 |  |  | returnOK; | 
| 275 |  |  | } | 
| 276 |  |  |  | 
| 277 |  |  |  | 
| 278 |  |  | int | 
| 279 |  |  | tmCvL16(ls, l16s, len)                  /* convert 16-bit LogL values */ | 
| 280 |  |  | TMbright        *ls; | 
| 281 |  |  | uint16  *l16s; | 
| 282 |  |  | int     len; | 
| 283 |  |  | { | 
| 284 |  |  | static char     funcName[] = "tmCvL16"; | 
| 285 |  |  | static double   lastsf; | 
| 286 |  |  | static int      offset; | 
| 287 |  |  | register int    i; | 
| 288 |  |  | /* check arguments */ | 
| 289 |  |  | if (tmTop == NULL) | 
| 290 |  |  | returnErr(TM_E_TMINVAL); | 
| 291 |  |  | if (ls == NULL | l16s == NULL | len < 0) | 
| 292 |  |  | returnErr(TM_E_ILLEGAL); | 
| 293 |  |  | /* check scaling offset */ | 
| 294 |  |  | if (!FEQ(tmTop->inpsf, lastsf)) { | 
| 295 |  |  | offset = BRT2SCALE*64; | 
| 296 |  |  | if (tmTop->inpsf > 1.0001) | 
| 297 |  |  | offset -= (int)(TM_BRTSCALE*log(tmTop->inpsf)+.5); | 
| 298 |  |  | else if (tmTop->inpsf < 0.9999) | 
| 299 |  |  | offset -= (int)(TM_BRTSCALE*log(tmTop->inpsf)-.5); | 
| 300 |  |  | lastsf = tmTop->inpsf; | 
| 301 |  |  | } | 
| 302 |  |  | /* convert each pixel */ | 
| 303 |  |  | for (i = len; i--; ) { | 
| 304 |  |  | if (l16s[i] & 0x8000)           /* negative luminance */ | 
| 305 | gwlarson | 3.3 | ls[i] = TM_NOBRT;       /* assign bogus value */ | 
| 306 | gwlarson | 3.1 | else                            /* else convert to lnL */ | 
| 307 |  |  | ls[i] = (BRT2SCALE*l16s[i] >> 8) - offset; | 
| 308 |  |  | } | 
| 309 |  |  | returnOK; | 
| 310 |  |  | } | 
| 311 |  |  |  | 
| 312 |  |  |  | 
| 313 |  |  | static void | 
| 314 |  |  | luv32NewSpace(tm)               /* initialize 32-bit LogLuv color space */ | 
| 315 |  |  | struct tmStruct *tm; | 
| 316 |  |  | { | 
| 317 |  |  | register LUV32DATA      *ld; | 
| 318 |  |  |  | 
| 319 |  |  | if (tm->inppri != TM_XYZPRIM) {         /* panic time! */ | 
| 320 |  |  | fputs("Improper input color space in luv32NewSpace!\n", stderr); | 
| 321 |  |  | exit(1); | 
| 322 |  |  | } | 
| 323 |  |  | ld = (LUV32DATA *)tm->pd[luv32Reg]; | 
| 324 |  |  | ld->offset = BRT2SCALE*64; | 
| 325 |  |  | if (tm->inpsf > 1.0001) | 
| 326 |  |  | ld->offset -= (int)(TM_BRTSCALE*log(tmTop->inpsf)+.5); | 
| 327 |  |  | else if (tm->inpsf < 0.9999) | 
| 328 |  |  | ld->offset -= (int)(TM_BRTSCALE*log(tmTop->inpsf)-.5); | 
| 329 |  |  | clruvall(ld); | 
| 330 |  |  | } | 
| 331 |  |  |  | 
| 332 |  |  |  | 
| 333 |  |  | static MEM_PTR | 
| 334 |  |  | luv32Init(tm)                   /* allocate data for 32-bit LogLuv decoder */ | 
| 335 |  |  | struct tmStruct *tm; | 
| 336 |  |  | { | 
| 337 |  |  | register LUV32DATA      *ld; | 
| 338 |  |  |  | 
| 339 |  |  | ld = (LUV32DATA *)malloc(sizeof(LUV32DATA)); | 
| 340 |  |  | if (ld == NULL) | 
| 341 |  |  | return(NULL); | 
| 342 |  |  | tm->pd[luv32Reg] = (MEM_PTR)ld; | 
| 343 |  |  | luv32NewSpace(tm); | 
| 344 |  |  | return((MEM_PTR)ld); | 
| 345 |  |  | } | 
| 346 |  |  |  | 
| 347 |  |  |  | 
| 348 |  |  | static void | 
| 349 |  |  | luv24NewSpace(tm)               /* initialize 24-bit LogLuv color space */ | 
| 350 |  |  | struct tmStruct *tm; | 
| 351 |  |  | { | 
| 352 |  |  | register LUV24DATA      *ld; | 
| 353 |  |  | double  uvp[2]; | 
| 354 |  |  |  | 
| 355 |  |  | if (tm->inppri != TM_XYZPRIM) {         /* panic time! */ | 
| 356 |  |  | fputs("Improper input color space in luv24NewSpace!\n", stderr); | 
| 357 |  |  | exit(1); | 
| 358 |  |  | } | 
| 359 |  |  | ld = (LUV24DATA *)tm->pd[luv24Reg]; | 
| 360 |  |  | ld->offset = BRT2SCALE*12; | 
| 361 |  |  | if (tm->inpsf > 1.0001) | 
| 362 |  |  | ld->offset -= (int)(TM_BRTSCALE*log(tmTop->inpsf)+.5); | 
| 363 |  |  | else if (tm->inpsf < 0.9999) | 
| 364 |  |  | ld->offset -= (int)(TM_BRTSCALE*log(tmTop->inpsf)-.5); | 
| 365 |  |  | clruvall(ld); | 
| 366 |  |  | } | 
| 367 |  |  |  | 
| 368 |  |  |  | 
| 369 |  |  | static MEM_PTR | 
| 370 |  |  | luv24Init(tm)                   /* allocate data for 24-bit LogLuv decoder */ | 
| 371 |  |  | struct tmStruct *tm; | 
| 372 |  |  | { | 
| 373 |  |  | register LUV24DATA      *ld; | 
| 374 |  |  |  | 
| 375 |  |  | ld = (LUV24DATA *)malloc(sizeof(LUV24DATA)); | 
| 376 |  |  | if (ld == NULL) | 
| 377 |  |  | return(NULL); | 
| 378 |  |  | tm->pd[luv24Reg] = (MEM_PTR)ld; | 
| 379 |  |  | if (uv14neu < 0) {              /* initialize neutral color index */ | 
| 380 |  |  | double  uvp[2]; | 
| 381 |  |  | uvp[0] = U_NEU; uvp[1] = V_NEU; | 
| 382 |  |  | uv14neu = uvpencode(uvp); | 
| 383 |  |  | } | 
| 384 |  |  | luv24NewSpace(tm); | 
| 385 |  |  | return((MEM_PTR)ld); | 
| 386 |  |  | } |