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opencv/3rdparty/libtiff/tif_aux.c

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/*
* Copyright (c) 1991-1997 Sam Leffler
* Copyright (c) 1991-1997 Silicon Graphics, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
/*
* TIFF Library.
*
* Auxiliary Support Routines.
*/
#include "tif_predict.h"
#include "tiffiop.h"
#include <float.h>
#include <math.h>
uint32_t _TIFFMultiply32(TIFF *tif, uint32_t first, uint32_t second,
const char *where)
{
if (second && first > UINT32_MAX / second)
{
TIFFErrorExtR(tif, where, "Integer overflow in %s", where);
return 0;
}
return first * second;
}
uint64_t _TIFFMultiply64(TIFF *tif, uint64_t first, uint64_t second,
const char *where)
{
if (second && first > UINT64_MAX / second)
{
TIFFErrorExtR(tif, where, "Integer overflow in %s", where);
return 0;
}
return first * second;
}
tmsize_t _TIFFMultiplySSize(TIFF *tif, tmsize_t first, tmsize_t second,
const char *where)
{
if (first <= 0 || second <= 0)
{
if (tif != NULL && where != NULL)
{
TIFFErrorExtR(tif, where,
"Invalid argument to _TIFFMultiplySSize() in %s",
where);
}
return 0;
}
if (first > TIFF_TMSIZE_T_MAX / second)
{
if (tif != NULL && where != NULL)
{
TIFFErrorExtR(tif, where, "Integer overflow in %s", where);
}
return 0;
}
return first * second;
}
tmsize_t _TIFFCastUInt64ToSSize(TIFF *tif, uint64_t val, const char *module)
{
if (val > (uint64_t)TIFF_TMSIZE_T_MAX)
{
if (tif != NULL && module != NULL)
{
TIFFErrorExtR(tif, module, "Integer overflow");
}
return 0;
}
return (tmsize_t)val;
}
void *_TIFFCheckRealloc(TIFF *tif, void *buffer, tmsize_t nmemb,
tmsize_t elem_size, const char *what)
{
void *cp = NULL;
tmsize_t count = _TIFFMultiplySSize(tif, nmemb, elem_size, NULL);
/*
* Check for integer overflow.
*/
if (count != 0)
{
cp = _TIFFreallocExt(tif, buffer, count);
}
if (cp == NULL)
{
TIFFErrorExtR(tif, tif->tif_name,
"Failed to allocate memory for %s "
"(%" TIFF_SSIZE_FORMAT " elements of %" TIFF_SSIZE_FORMAT
" bytes each)",
what, nmemb, elem_size);
}
return cp;
}
void *_TIFFCheckMalloc(TIFF *tif, tmsize_t nmemb, tmsize_t elem_size,
const char *what)
{
return _TIFFCheckRealloc(tif, NULL, nmemb, elem_size, what);
}
static int TIFFDefaultTransferFunction(TIFF *tif, TIFFDirectory *td)
{
uint16_t **tf = td->td_transferfunction;
tmsize_t i, n, nbytes;
tf[0] = tf[1] = tf[2] = 0;
if (td->td_bitspersample >= sizeof(tmsize_t) * 8 - 2)
return 0;
n = ((tmsize_t)1) << td->td_bitspersample;
nbytes = n * sizeof(uint16_t);
tf[0] = (uint16_t *)_TIFFmallocExt(tif, nbytes);
if (tf[0] == NULL)
return 0;
tf[0][0] = 0;
for (i = 1; i < n; i++)
{
double t = (double)i / ((double)n - 1.);
tf[0][i] = (uint16_t)floor(65535. * pow(t, 2.2) + .5);
}
if (td->td_samplesperpixel - td->td_extrasamples > 1)
{
tf[1] = (uint16_t *)_TIFFmallocExt(tif, nbytes);
if (tf[1] == NULL)
goto bad;
_TIFFmemcpy(tf[1], tf[0], nbytes);
tf[2] = (uint16_t *)_TIFFmallocExt(tif, nbytes);
if (tf[2] == NULL)
goto bad;
_TIFFmemcpy(tf[2], tf[0], nbytes);
}
return 1;
bad:
if (tf[0])
_TIFFfreeExt(tif, tf[0]);
if (tf[1])
_TIFFfreeExt(tif, tf[1]);
if (tf[2])
_TIFFfreeExt(tif, tf[2]);
tf[0] = tf[1] = tf[2] = 0;
return 0;
}
static int TIFFDefaultRefBlackWhite(TIFF *tif, TIFFDirectory *td)
{
int i;
td->td_refblackwhite = (float *)_TIFFmallocExt(tif, 6 * sizeof(float));
if (td->td_refblackwhite == NULL)
return 0;
if (td->td_photometric == PHOTOMETRIC_YCBCR)
{
/*
* YCbCr (Class Y) images must have the ReferenceBlackWhite
* tag set. Fix the broken images, which lacks that tag.
*/
td->td_refblackwhite[0] = 0.0F;
td->td_refblackwhite[1] = td->td_refblackwhite[3] =
td->td_refblackwhite[5] = 255.0F;
td->td_refblackwhite[2] = td->td_refblackwhite[4] = 128.0F;
}
else
{
/*
* Assume RGB (Class R)
*/
for (i = 0; i < 3; i++)
{
td->td_refblackwhite[2 * i + 0] = 0;
td->td_refblackwhite[2 * i + 1] =
(float)((1L << td->td_bitspersample) - 1L);
}
}
return 1;
}
/*
* Like TIFFGetField, but return any default
* value if the tag is not present in the directory.
*
* NB: We use the value in the directory, rather than
* explicit values so that defaults exist only one
* place in the library -- in TIFFDefaultDirectory.
*/
int TIFFVGetFieldDefaulted(TIFF *tif, uint32_t tag, va_list ap)
{
TIFFDirectory *td = &tif->tif_dir;
if (TIFFVGetField(tif, tag, ap))
return (1);
switch (tag)
{
case TIFFTAG_SUBFILETYPE:
*va_arg(ap, uint32_t *) = td->td_subfiletype;
return (1);
case TIFFTAG_BITSPERSAMPLE:
*va_arg(ap, uint16_t *) = td->td_bitspersample;
return (1);
case TIFFTAG_THRESHHOLDING:
*va_arg(ap, uint16_t *) = td->td_threshholding;
return (1);
case TIFFTAG_FILLORDER:
*va_arg(ap, uint16_t *) = td->td_fillorder;
return (1);
case TIFFTAG_ORIENTATION:
*va_arg(ap, uint16_t *) = td->td_orientation;
return (1);
case TIFFTAG_SAMPLESPERPIXEL:
*va_arg(ap, uint16_t *) = td->td_samplesperpixel;
return (1);
case TIFFTAG_ROWSPERSTRIP:
*va_arg(ap, uint32_t *) = td->td_rowsperstrip;
return (1);
case TIFFTAG_MINSAMPLEVALUE:
*va_arg(ap, uint16_t *) = td->td_minsamplevalue;
return (1);
case TIFFTAG_MAXSAMPLEVALUE:
{
uint16_t maxsamplevalue;
/* td_bitspersample=1 is always set in TIFFDefaultDirectory().
* Therefore, td_maxsamplevalue has to be re-calculated in
* TIFFGetFieldDefaulted(). */
if (td->td_bitspersample > 0)
{
/* This shift operation into a uint16_t limits the value to
* 65535 even if td_bitspersamle is > 16 */
if (td->td_bitspersample <= 16)
{
maxsamplevalue = (1 << td->td_bitspersample) -
1; /* 2**(BitsPerSample) - 1 */
}
else
{
maxsamplevalue = 65535;
}
}
else
{
maxsamplevalue = 0;
}
*va_arg(ap, uint16_t *) = maxsamplevalue;
return (1);
}
case TIFFTAG_PLANARCONFIG:
*va_arg(ap, uint16_t *) = td->td_planarconfig;
return (1);
case TIFFTAG_RESOLUTIONUNIT:
*va_arg(ap, uint16_t *) = td->td_resolutionunit;
return (1);
case TIFFTAG_PREDICTOR:
{
TIFFPredictorState *sp = (TIFFPredictorState *)tif->tif_data;
if (sp == NULL)
{
TIFFErrorExtR(
tif, tif->tif_name,
"Cannot get \"Predictor\" tag as plugin is not configured");
*va_arg(ap, uint16_t *) = 0;
return 0;
}
*va_arg(ap, uint16_t *) = (uint16_t)sp->predictor;
return 1;
}
case TIFFTAG_DOTRANGE:
*va_arg(ap, uint16_t *) = 0;
*va_arg(ap, uint16_t *) = (1 << td->td_bitspersample) - 1;
return (1);
case TIFFTAG_INKSET:
*va_arg(ap, uint16_t *) = INKSET_CMYK;
return 1;
case TIFFTAG_NUMBEROFINKS:
*va_arg(ap, uint16_t *) = 4;
return (1);
case TIFFTAG_EXTRASAMPLES:
*va_arg(ap, uint16_t *) = td->td_extrasamples;
*va_arg(ap, const uint16_t **) = td->td_sampleinfo;
return (1);
case TIFFTAG_MATTEING:
*va_arg(ap, uint16_t *) =
(td->td_extrasamples == 1 &&
td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
return (1);
case TIFFTAG_TILEDEPTH:
*va_arg(ap, uint32_t *) = td->td_tiledepth;
return (1);
case TIFFTAG_DATATYPE:
*va_arg(ap, uint16_t *) = td->td_sampleformat - 1;
return (1);
case TIFFTAG_SAMPLEFORMAT:
*va_arg(ap, uint16_t *) = td->td_sampleformat;
return (1);
case TIFFTAG_IMAGEDEPTH:
*va_arg(ap, uint32_t *) = td->td_imagedepth;
return (1);
case TIFFTAG_YCBCRCOEFFICIENTS:
{
/* defaults are from CCIR Recommendation 601-1 */
static const float ycbcrcoeffs[] = {0.299f, 0.587f, 0.114f};
*va_arg(ap, const float **) = ycbcrcoeffs;
return 1;
}
case TIFFTAG_YCBCRSUBSAMPLING:
*va_arg(ap, uint16_t *) = td->td_ycbcrsubsampling[0];
*va_arg(ap, uint16_t *) = td->td_ycbcrsubsampling[1];
return (1);
case TIFFTAG_YCBCRPOSITIONING:
*va_arg(ap, uint16_t *) = td->td_ycbcrpositioning;
return (1);
case TIFFTAG_WHITEPOINT:
{
/* TIFF 6.0 specification tells that it is no default
value for the WhitePoint, but AdobePhotoshop TIFF
Technical Note tells that it should be CIE D50. */
static const float whitepoint[] = {
D50_X0 / (D50_X0 + D50_Y0 + D50_Z0),
D50_Y0 / (D50_X0 + D50_Y0 + D50_Z0)};
*va_arg(ap, const float **) = whitepoint;
return 1;
}
case TIFFTAG_TRANSFERFUNCTION:
if (!td->td_transferfunction[0] &&
!TIFFDefaultTransferFunction(tif, td))
{
TIFFErrorExtR(tif, tif->tif_name,
"No space for \"TransferFunction\" tag");
return (0);
}
*va_arg(ap, const uint16_t **) = td->td_transferfunction[0];
if (td->td_samplesperpixel - td->td_extrasamples > 1)
{
*va_arg(ap, const uint16_t **) = td->td_transferfunction[1];
*va_arg(ap, const uint16_t **) = td->td_transferfunction[2];
}
return (1);
case TIFFTAG_REFERENCEBLACKWHITE:
if (!td->td_refblackwhite && !TIFFDefaultRefBlackWhite(tif, td))
return (0);
*va_arg(ap, const float **) = td->td_refblackwhite;
return (1);
}
return 0;
}
/*
* Like TIFFGetField, but return any default
* value if the tag is not present in the directory.
*/
int TIFFGetFieldDefaulted(TIFF *tif, uint32_t tag, ...)
{
int ok;
va_list ap;
va_start(ap, tag);
ok = TIFFVGetFieldDefaulted(tif, tag, ap);
va_end(ap);
return (ok);
}
struct _Int64Parts
{
int32_t low, high;
};
typedef union
{
struct _Int64Parts part;
int64_t value;
} _Int64;
float _TIFFUInt64ToFloat(uint64_t ui64)
{
_Int64 i;
i.value = ui64;
if (i.part.high >= 0)
{
return (float)i.value;
}
else
{
long double df;
df = (long double)i.value;
df += 18446744073709551616.0; /* adding 2**64 */
return (float)df;
}
}
double _TIFFUInt64ToDouble(uint64_t ui64)
{
_Int64 i;
i.value = ui64;
if (i.part.high >= 0)
{
return (double)i.value;
}
else
{
long double df;
df = (long double)i.value;
df += 18446744073709551616.0; /* adding 2**64 */
return (double)df;
}
}
float _TIFFClampDoubleToFloat(double val)
{
if (val > FLT_MAX)
return FLT_MAX;
if (val < -FLT_MAX)
return -FLT_MAX;
return (float)val;
}
uint32_t _TIFFClampDoubleToUInt32(double val)
{
if (val < 0)
return 0;
if (val > 0xFFFFFFFFU || val != val)
return 0xFFFFFFFFU;
return (uint32_t)val;
}
int _TIFFSeekOK(TIFF *tif, toff_t off)
{
/* Huge offsets, especially -1 / UINT64_MAX, can cause issues */
/* See http://bugzilla.maptools.org/show_bug.cgi?id=2726 */
return off <= (~(uint64_t)0) / 2 && TIFFSeekFile(tif, off, SEEK_SET) == off;
}