reactos/dll/3rdparty/libtiff/tif_aux.c

   1 /* $Id: tif_aux.c,v 1.26 2010-07-01 15:33:28 dron Exp $ */
   2
   3 /*
   4  * Copyright (c) 1991-1997 Sam Leffler
   5  * Copyright (c) 1991-1997 Silicon Graphics, Inc.
   6  *
   7  * Permission to use, copy, modify, distribute, and sell this software and
   8  * its documentation for any purpose is hereby granted without fee, provided
   9  * that (i) the above copyright notices and this permission notice appear in
  10  * all copies of the software and related documentation, and (ii) the names of
  11  * Sam Leffler and Silicon Graphics may not be used in any advertising or
  12  * publicity relating to the software without the specific, prior written
  13  * permission of Sam Leffler and Silicon Graphics.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  17  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  18  *
  19  * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
  20  * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
  21  * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  22  * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  23  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  */
  26
  27 /*
  28  * TIFF Library.
  29  *
  30  * Auxiliary Support Routines.
  31  */
  32
  33 #include <precomp.h>
  34 #include <tif_predict.h>
  35 #include <math.h>
  36
  37 uint32
  38 _TIFFMultiply32(TIFF* tif, uint32 first, uint32 second, const char* where)
  39 {
  40         uint32 bytes = first * second;
  41
  42         if (second && bytes / second != first) {
  43                 TIFFErrorExt(tif->tif_clientdata, where, "Integer overflow in %s", where);
  44                 bytes = 0;
  45         }
  46
  47         return bytes;
  48 }
  49
  50 uint64
  51 _TIFFMultiply64(TIFF* tif, uint64 first, uint64 second, const char* where)
  52 {
  53         uint64 bytes = first * second;
  54
  55         if (second && bytes / second != first) {
  56                 TIFFErrorExt(tif->tif_clientdata, where, "Integer overflow in %s", where);
  57                 bytes = 0;
  58         }
  59
  60         return bytes;
  61 }
  62
  63 void*
  64 _TIFFCheckRealloc(TIFF* tif, void* buffer,
  65                   tmsize_t nmemb, tmsize_t elem_size, const char* what)
  66 {
  67         void* cp = NULL;
  68         tmsize_t bytes = nmemb * elem_size;
  69
  70         /*
  71          * XXX: Check for integer overflow.
  72          */
  73         if (nmemb && elem_size && bytes / elem_size == nmemb)
  74                 cp = _TIFFrealloc(buffer, bytes);
  75
  76         if (cp == NULL) {
  77                 TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
  78                              "Failed to allocate memory for %s "
  79                              "(%ld elements of %ld bytes each)",
  80                              what,(long) nmemb, (long) elem_size);
  81         }
  82
  83         return cp;
  84 }
  85
  86 void*
  87 _TIFFCheckMalloc(TIFF* tif, tmsize_t nmemb, tmsize_t elem_size, const char* what)
  88 {
  89         return _TIFFCheckRealloc(tif, NULL, nmemb, elem_size, what);
  90 }
  91
  92 static int
  93 TIFFDefaultTransferFunction(TIFFDirectory* td)
  94 {
  95         uint16 **tf = td->td_transferfunction;
  96         tmsize_t i, n, nbytes;
  97
  98         tf[0] = tf[1] = tf[2] = 0;
  99         if (td->td_bitspersample >= sizeof(tmsize_t) * 8 - 2)
 100                 return 0;
 101
 102         n = ((tmsize_t)1)<<td->td_bitspersample;
 103         nbytes = n * sizeof (uint16);
 104         if (!(tf[0] = (uint16 *)_TIFFmalloc(nbytes)))
 105                 return 0;
 106         tf[0][0] = 0;
 107         for (i = 1; i < n; i++) {
 108                 double t = (double)i/((double) n-1.);
 109                 tf[0][i] = (uint16)floor(65535.*pow(t, 2.2) + .5);
 110         }
 111
 112         if (td->td_samplesperpixel - td->td_extrasamples > 1) {
 113                 if (!(tf[1] = (uint16 *)_TIFFmalloc(nbytes)))
 114                         goto bad;
 115                 _TIFFmemcpy(tf[1], tf[0], nbytes);
 116                 if (!(tf[2] = (uint16 *)_TIFFmalloc(nbytes)))
 117                         goto bad;
 118                 _TIFFmemcpy(tf[2], tf[0], nbytes);
 119         }
 120         return 1;
 121
 122 bad:
 123         if (tf[0])
 124                 _TIFFfree(tf[0]);
 125         if (tf[1])
 126                 _TIFFfree(tf[1]);
 127         if (tf[2])
 128                 _TIFFfree(tf[2]);
 129         tf[0] = tf[1] = tf[2] = 0;
 130         return 0;
 131 }
 132
 133 static int
 134 TIFFDefaultRefBlackWhite(TIFFDirectory* td)
 135 {
 136         int i;
 137
 138         if (!(td->td_refblackwhite = (float *)_TIFFmalloc(6*sizeof (float))))
 139                 return 0;
 140         if (td->td_photometric == PHOTOMETRIC_YCBCR) {
 141                 /*
 142                  * YCbCr (Class Y) images must have the ReferenceBlackWhite
 143                  * tag set. Fix the broken images, which lacks that tag.
 144                  */
 145                 td->td_refblackwhite[0] = 0.0F;
 146                 td->td_refblackwhite[1] = td->td_refblackwhite[3] =
 147                         td->td_refblackwhite[5] = 255.0F;
 148                 td->td_refblackwhite[2] = td->td_refblackwhite[4] = 128.0F;
 149         } else {
 150                 /*
 151                  * Assume RGB (Class R)
 152                  */
 153                 for (i = 0; i < 3; i++) {
 154                     td->td_refblackwhite[2*i+0] = 0;
 155                     td->td_refblackwhite[2*i+1] =
 156                             (float)((1L<<td->td_bitspersample)-1L);
 157                 }
 158         }
 159         return 1;
 160 }
 161
 162 /*
 163  * Like TIFFGetField, but return any default
 164  * value if the tag is not present in the directory.
 165  *
 166  * NB:  We use the value in the directory, rather than
 167  *      explcit values so that defaults exist only one
 168  *      place in the library -- in TIFFDefaultDirectory.
 169  */
 170 int
 171 TIFFVGetFieldDefaulted(TIFF* tif, uint32 tag, va_list ap)
 172 {
 173         TIFFDirectory *td = &tif->tif_dir;
 174
 175         if (TIFFVGetField(tif, tag, ap))
 176                 return (1);
 177         switch (tag) {
 178         case TIFFTAG_SUBFILETYPE:
 179                 *va_arg(ap, uint32 *) = td->td_subfiletype;
 180                 return (1);
 181         case TIFFTAG_BITSPERSAMPLE:
 182                 *va_arg(ap, uint16 *) = td->td_bitspersample;
 183                 return (1);
 184         case TIFFTAG_THRESHHOLDING:
 185                 *va_arg(ap, uint16 *) = td->td_threshholding;
 186                 return (1);
 187         case TIFFTAG_FILLORDER:
 188                 *va_arg(ap, uint16 *) = td->td_fillorder;
 189                 return (1);
 190         case TIFFTAG_ORIENTATION:
 191                 *va_arg(ap, uint16 *) = td->td_orientation;
 192                 return (1);
 193         case TIFFTAG_SAMPLESPERPIXEL:
 194                 *va_arg(ap, uint16 *) = td->td_samplesperpixel;
 195                 return (1);
 196         case TIFFTAG_ROWSPERSTRIP:
 197                 *va_arg(ap, uint32 *) = td->td_rowsperstrip;
 198                 return (1);
 199         case TIFFTAG_MINSAMPLEVALUE:
 200                 *va_arg(ap, uint16 *) = td->td_minsamplevalue;
 201                 return (1);
 202         case TIFFTAG_MAXSAMPLEVALUE:
 203                 *va_arg(ap, uint16 *) = td->td_maxsamplevalue;
 204                 return (1);
 205         case TIFFTAG_PLANARCONFIG:
 206                 *va_arg(ap, uint16 *) = td->td_planarconfig;
 207                 return (1);
 208         case TIFFTAG_RESOLUTIONUNIT:
 209                 *va_arg(ap, uint16 *) = td->td_resolutionunit;
 210                 return (1);
 211         case TIFFTAG_PREDICTOR:
 212                 {
 213                         TIFFPredictorState* sp = (TIFFPredictorState*) tif->tif_data;
 214                         *va_arg(ap, uint16*) = (uint16) sp->predictor;
 215                         return 1;
 216                 }
 217         case TIFFTAG_DOTRANGE:
 218                 *va_arg(ap, uint16 *) = 0;
 219                 *va_arg(ap, uint16 *) = (1<<td->td_bitspersample)-1;
 220                 return (1);
 221         case TIFFTAG_INKSET:
 222                 *va_arg(ap, uint16 *) = INKSET_CMYK;
 223                 return 1;
 224         case TIFFTAG_NUMBEROFINKS:
 225                 *va_arg(ap, uint16 *) = 4;
 226                 return (1);
 227         case TIFFTAG_EXTRASAMPLES:
 228                 *va_arg(ap, uint16 *) = td->td_extrasamples;
 229                 *va_arg(ap, uint16 **) = td->td_sampleinfo;
 230                 return (1);
 231         case TIFFTAG_MATTEING:
 232                 *va_arg(ap, uint16 *) =
 233                     (td->td_extrasamples == 1 &&
 234                      td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
 235                 return (1);
 236         case TIFFTAG_TILEDEPTH:
 237                 *va_arg(ap, uint32 *) = td->td_tiledepth;
 238                 return (1);
 239         case TIFFTAG_DATATYPE:
 240                 *va_arg(ap, uint16 *) = td->td_sampleformat-1;
 241                 return (1);
 242         case TIFFTAG_SAMPLEFORMAT:
 243                 *va_arg(ap, uint16 *) = td->td_sampleformat;
 244                 return(1);
 245         case TIFFTAG_IMAGEDEPTH:
 246                 *va_arg(ap, uint32 *) = td->td_imagedepth;
 247                 return (1);
 248         case TIFFTAG_YCBCRCOEFFICIENTS:
 249                 {
 250                         /* defaults are from CCIR Recommendation 601-1 */
 251                         static float ycbcrcoeffs[] = { 0.299f, 0.587f, 0.114f };
 252                         *va_arg(ap, float **) = ycbcrcoeffs;
 253                         return 1;
 254                 }
 255         case TIFFTAG_YCBCRSUBSAMPLING:
 256                 *va_arg(ap, uint16 *) = td->td_ycbcrsubsampling[0];
 257                 *va_arg(ap, uint16 *) = td->td_ycbcrsubsampling[1];
 258                 return (1);
 259         case TIFFTAG_YCBCRPOSITIONING:
 260                 *va_arg(ap, uint16 *) = td->td_ycbcrpositioning;
 261                 return (1);
 262         case TIFFTAG_WHITEPOINT:
 263                 {
 264                         static float whitepoint[2];
 265
 266                         /* TIFF 6.0 specification tells that it is no default
 267                            value for the WhitePoint, but AdobePhotoshop TIFF
 268                            Technical Note tells that it should be CIE D50. */
 269                         whitepoint[0] = D50_X0 / (D50_X0 + D50_Y0 + D50_Z0);
 270                         whitepoint[1] = D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0);
 271                         *va_arg(ap, float **) = whitepoint;
 272                         return 1;
 273                 }
 274         case TIFFTAG_TRANSFERFUNCTION:
 275                 if (!td->td_transferfunction[0] &&
 276                     !TIFFDefaultTransferFunction(td)) {
 277                         TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space for \"TransferFunction\" tag");
 278                         return (0);
 279                 }
 280                 *va_arg(ap, uint16 **) = td->td_transferfunction[0];
 281                 if (td->td_samplesperpixel - td->td_extrasamples > 1) {
 282                         *va_arg(ap, uint16 **) = td->td_transferfunction[1];
 283                         *va_arg(ap, uint16 **) = td->td_transferfunction[2];
 284                 }
 285                 return (1);
 286         case TIFFTAG_REFERENCEBLACKWHITE:
 287                 if (!td->td_refblackwhite && !TIFFDefaultRefBlackWhite(td))
 288                         return (0);
 289                 *va_arg(ap, float **) = td->td_refblackwhite;
 290                 return (1);
 291         }
 292         return 0;
 293 }
 294
 295 /*
 296  * Like TIFFGetField, but return any default
 297  * value if the tag is not present in the directory.
 298  */
 299 int
 300 TIFFGetFieldDefaulted(TIFF* tif, uint32 tag, ...)
 301 {
 302         int ok;
 303         va_list ap;
 304
 305         va_start(ap, tag);
 306         ok =  TIFFVGetFieldDefaulted(tif, tag, ap);
 307         va_end(ap);
 308         return (ok);
 309 }
 310
 311 struct _Int64Parts {
 312         int32 low, high;
 313 };
 314
 315 typedef union {
 316         struct _Int64Parts part;
 317         int64 value;
 318 } _Int64;
 319
 320 float
 321 _TIFFUInt64ToFloat(uint64 ui64)
 322 {
 323         _Int64 i;
 324
 325         i.value = ui64;
 326         if (i.part.high >= 0) {
 327                 return (float)i.value;
 328         } else {
 329                 long double df;
 330                 df = (long double)i.value;
 331                 df += 18446744073709551616.0; /* adding 2**64 */
 332                 return (float)df;
 333         }
 334 }
 335
 336 double
 337 _TIFFUInt64ToDouble(uint64 ui64)
 338 {
 339         _Int64 i;
 340
 341         i.value = ui64;
 342         if (i.part.high >= 0) {
 343                 return (double)i.value;
 344         } else {
 345                 long double df;
 346                 df = (long double)i.value;
 347                 df += 18446744073709551616.0; /* adding 2**64 */
 348                 return (double)df;
 349         }
 350 }
 351
 352 /* vim: set ts=8 sts=8 sw=8 noet: */
 353 /*
 354  * Local Variables:
 355  * mode: c
 356  * c-basic-offset: 8
 357  * fill-column: 78
 358  * End:
 359  */