420 lines
11 KiB
C
420 lines
11 KiB
C
|
/*
|
||
|
|
* 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 "tiffiop.h"
|
||
|
|
#include "tif_predict.h"
|
||
|
|
#include <math.h>
|
||
|
|
#include <float.h>
|
||
|
|
|
||
|
|
uint32_t
|
||
|
|
_TIFFMultiply32(TIFF* tif, uint32_t first, uint32_t second, const char* where)
|
||
|
|
{
|
||
|
|
if (second && first > UINT32_MAX / second) {
|
||
|
|
TIFFErrorExt(tif->tif_clientdata, 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) {
|
||
|
|
TIFFErrorExt(tif->tif_clientdata, 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 )
|
||
|
|
{
|
||
|
|
TIFFErrorExt(tif->tif_clientdata, where,
|
||
|
|
"Invalid argument to _TIFFMultiplySSize() in %s", where);
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( first > TIFF_TMSIZE_T_MAX / second )
|
||
|
|
{
|
||
|
|
if( tif != NULL && where != NULL )
|
||
|
|
{
|
||
|
|
TIFFErrorExt(tif->tif_clientdata, 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 )
|
||
|
|
{
|
||
|
|
TIFFErrorExt(tif->tif_clientdata,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 = _TIFFrealloc(buffer, count);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (cp == NULL) {
|
||
|
|
TIFFErrorExt(tif->tif_clientdata, 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(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 *)_TIFFmalloc(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 *)_TIFFmalloc(nbytes);
|
||
|
|
if(tf[1] == NULL)
|
||
|
|
goto bad;
|
||
|
|
_TIFFmemcpy(tf[1], tf[0], nbytes);
|
||
|
|
tf[2] = (uint16_t *)_TIFFmalloc(nbytes);
|
||
|
|
if (tf[2] == NULL)
|
||
|
|
goto bad;
|
||
|
|
_TIFFmemcpy(tf[2], tf[0], nbytes);
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
bad:
|
||
|
|
if (tf[0])
|
||
|
|
_TIFFfree(tf[0]);
|
||
|
|
if (tf[1])
|
||
|
|
_TIFFfree(tf[1]);
|
||
|
|
if (tf[2])
|
||
|
|
_TIFFfree(tf[2]);
|
||
|
|
tf[0] = tf[1] = tf[2] = 0;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
TIFFDefaultRefBlackWhite(TIFFDirectory* td)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
td->td_refblackwhite = (float *)_TIFFmalloc(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:
|
||
|
|
*va_arg(ap, uint16_t *) = td->td_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 )
|
||
|
|
{
|
||
|
|
TIFFErrorExt(tif->tif_clientdata, 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(td)) {
|
||
|
|
TIFFErrorExt(tif->tif_clientdata, 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(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 WINAPIV
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* vim: set ts=8 sts=8 sw=8 noet: */
|
||
|
|
/*
|
||
|
|
* Local Variables:
|
||
|
|
* mode: c
|
||
|
|
* c-basic-offset: 8
|
||
|
|
* fill-column: 78
|
||
|
|
* End:
|
||
|
|
*/
|