Merge XFA to PDFium master at 4dc95e7 on 10/28/2014
[pdfium.git] / core / src / fxcodec / fx_tiff / tiff_v403 / 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 #if (!defined(_FPDFAPI_MINI_) || defined(_TIFF_DECODER_)) && !defined(_USE_ADDIN_) && !defined _FX_NO_ANSIC_ && !defined(_FX_EMB_NOUSE_DECODER_)
33 #include "tiffiop.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  */
360  #endif