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pdfium / pdfium / refs/heads/chromium/6995 / . / third_party / libtiff / tif_dirwrite.c
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/*
* Copyright (c) 1988-1997 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.
*
* Directory Write Support Routines.
*/
#include "tiffiop.h"
#include <float.h> /*--: for Rational2Double */
#include <math.h> /*--: for Rational2Double */
#ifdef HAVE_IEEEFP
#define TIFFCvtNativeToIEEEFloat(tif, n, fp)
#define TIFFCvtNativeToIEEEDouble(tif, n, dp)
#else
extern void TIFFCvtNativeToIEEEFloat(TIFF *tif, uint32_t n, float *fp);
extern void TIFFCvtNativeToIEEEDouble(TIFF *tif, uint32_t n, double *dp);
#endif
static int TIFFWriteDirectorySec(TIFF *tif, int isimage, int imagedone,
uint64_t *pdiroff);
static int TIFFWriteDirectoryTagSampleformatArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
double *value);
static int TIFFWriteDirectoryTagAscii(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, char *value);
static int TIFFWriteDirectoryTagUndefinedArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint8_t *value);
static int TIFFWriteDirectoryTagByteArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint8_t *value);
static int TIFFWriteDirectoryTagSbyteArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, int8_t *value);
static int TIFFWriteDirectoryTagShort(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint16_t value);
static int TIFFWriteDirectoryTagShortArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint16_t *value);
static int TIFFWriteDirectoryTagShortPerSample(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint16_t value);
static int TIFFWriteDirectoryTagSshortArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, int16_t *value);
static int TIFFWriteDirectoryTagLong(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t value);
static int TIFFWriteDirectoryTagLongArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint32_t *value);
static int TIFFWriteDirectoryTagSlongArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, int32_t *value);
static int TIFFWriteDirectoryTagLong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint64_t *value);
static int TIFFWriteDirectoryTagSlong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, int64_t *value);
static int TIFFWriteDirectoryTagRational(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
double value);
static int TIFFWriteDirectoryTagRationalArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, float *value);
static int TIFFWriteDirectoryTagSrationalArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, float *value);
static int TIFFWriteDirectoryTagFloatArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, float *value);
static int TIFFWriteDirectoryTagDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, double *value);
static int TIFFWriteDirectoryTagIfdArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint32_t *value);
static int TIFFWriteDirectoryTagShortLong(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t value);
static int TIFFWriteDirectoryTagLongLong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint64_t *value);
static int TIFFWriteDirectoryTagIfdIfd8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint64_t *value);
static int TIFFWriteDirectoryTagColormap(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir);
static int TIFFWriteDirectoryTagTransferfunction(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir);
static int TIFFWriteDirectoryTagSubifd(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir);
static int TIFFWriteDirectoryTagCheckedAscii(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, char *value);
static int TIFFWriteDirectoryTagCheckedUndefinedArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
uint8_t *value);
static int TIFFWriteDirectoryTagCheckedByteArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint8_t *value);
static int TIFFWriteDirectoryTagCheckedSbyteArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
int8_t *value);
static int TIFFWriteDirectoryTagCheckedShort(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint16_t value);
static int TIFFWriteDirectoryTagCheckedShortArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint16_t *value);
static int TIFFWriteDirectoryTagCheckedSshortArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
int16_t *value);
static int TIFFWriteDirectoryTagCheckedLong(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t value);
static int TIFFWriteDirectoryTagCheckedLongArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint32_t *value);
static int TIFFWriteDirectoryTagCheckedSlongArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
int32_t *value);
static int TIFFWriteDirectoryTagCheckedLong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint64_t *value);
static int TIFFWriteDirectoryTagCheckedSlong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
int64_t *value);
static int TIFFWriteDirectoryTagCheckedRational(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
double value);
static int TIFFWriteDirectoryTagCheckedRationalArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
float *value);
static int TIFFWriteDirectoryTagCheckedSrationalArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
float *value);
/*--: Rational2Double: New functions to support true double-precision for custom
* rational tag types. */
static int TIFFWriteDirectoryTagRationalDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
double *value);
static int TIFFWriteDirectoryTagSrationalDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
double *value);
static int
TIFFWriteDirectoryTagCheckedRationalDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, double *value);
static int TIFFWriteDirectoryTagCheckedSrationalDoubleArray(
TIFF *tif, uint32_t *ndir, TIFFDirEntry *dir, uint16_t tag, uint32_t count,
double *value);
static void DoubleToRational(double value, uint32_t *num, uint32_t *denom);
static void DoubleToSrational(double value, int32_t *num, int32_t *denom);
static int TIFFWriteDirectoryTagCheckedFloatArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
float *value);
static int TIFFWriteDirectoryTagCheckedDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
double *value);
static int TIFFWriteDirectoryTagCheckedIfdArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count,
uint32_t *value);
static int TIFFWriteDirectoryTagCheckedIfd8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint64_t *value);
static int TIFFWriteDirectoryTagData(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint16_t datatype, uint32_t count,
uint32_t datalength, void *data);
static int TIFFLinkDirectory(TIFF *);
/*
* Write the contents of the current directory
* to the specified file. This routine doesn't
* handle overwriting a directory with auxiliary
* storage that's been changed.
*/
int TIFFWriteDirectory(TIFF *tif)
{
return TIFFWriteDirectorySec(tif, TRUE, TRUE, NULL);
}
/*
* This is an advanced writing function that must be used in a particular
* sequence, and generally together with TIFFForceStrileArrayWriting(),
* to make its intended effect. Its aim is to modify the location
* where the [Strip/Tile][Offsets/ByteCounts] arrays are located in the file.
* More precisely, when TIFFWriteCheck() will be called, the tag entries for
* those arrays will be written with type = count = offset = 0 as a temporary
* value.
*
* Its effect is only valid for the current directory, and before
* TIFFWriteDirectory() is first called, and will be reset when
* changing directory.
*
* The typical sequence of calls is:
* TIFFOpen()
* [ TIFFCreateDirectory(tif) ]
* Set fields with calls to TIFFSetField(tif, ...)
* TIFFDeferStrileArrayWriting(tif)
* TIFFWriteCheck(tif, ...)
* TIFFWriteDirectory(tif)
* ... potentially create other directories and come back to the above directory
* TIFFForceStrileArrayWriting(tif): emit the arrays at the end of file
*
* Returns 1 in case of success, 0 otherwise.
*/
int TIFFDeferStrileArrayWriting(TIFF *tif)
{
static const char module[] = "TIFFDeferStrileArrayWriting";
if (tif->tif_mode == O_RDONLY)
{
TIFFErrorExtR(tif, tif->tif_name, "File opened in read-only mode");
return 0;
}
if (tif->tif_diroff != 0)
{
TIFFErrorExtR(tif, module, "Directory has already been written");
return 0;
}
tif->tif_dir.td_deferstrilearraywriting = TRUE;
return 1;
}
/*
* Similar to TIFFWriteDirectory(), writes the directory out
* but leaves all data structures in memory so that it can be
* written again. This will make a partially written TIFF file
* readable before it is successfully completed/closed.
*/
int TIFFCheckpointDirectory(TIFF *tif)
{
int rc;
/* Setup the strips arrays, if they haven't already been. */
if (tif->tif_dir.td_stripoffset_p == NULL)
(void)TIFFSetupStrips(tif);
rc = TIFFWriteDirectorySec(tif, TRUE, FALSE, NULL);
(void)TIFFSetWriteOffset(tif, TIFFSeekFile(tif, 0, SEEK_END));
return rc;
}
int TIFFWriteCustomDirectory(TIFF *tif, uint64_t *pdiroff)
{
return TIFFWriteDirectorySec(tif, FALSE, FALSE, pdiroff);
}
/*
* Similar to TIFFWriteDirectorySec(), but if the directory has already
* been written once, it is relocated to the end of the file, in case it
* has changed in size. Note that this will result in the loss of the
* previously used directory space.
*/
static int TIFFRewriteDirectorySec(TIFF *tif, int isimage, int imagedone,
uint64_t *pdiroff)
{
static const char module[] = "TIFFRewriteDirectory";
/* We don't need to do anything special if it hasn't been written. */
if (tif->tif_diroff == 0)
return TIFFWriteDirectory(tif);
/*
* Find and zero the pointer to this directory, so that TIFFLinkDirectory
* will cause it to be added after this directories current pre-link.
*/
uint64_t torewritediroff = tif->tif_diroff;
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
if (tif->tif_header.classic.tiff_diroff == tif->tif_diroff)
{
tif->tif_header.classic.tiff_diroff = 0;
tif->tif_diroff = 0;
TIFFSeekFile(tif, 4, SEEK_SET);
if (!WriteOK(tif, &(tif->tif_header.classic.tiff_diroff), 4))
{
TIFFErrorExtR(tif, tif->tif_name, "Error updating TIFF header");
return (0);
}
}
else if (tif->tif_diroff > 0xFFFFFFFFU)
{
TIFFErrorExtR(tif, module,
"tif->tif_diroff exceeds 32 bit range allowed for "
"Classic TIFF");
return (0);
}
else
{
uint32_t nextdir;
nextdir = tif->tif_header.classic.tiff_diroff;
while (1)
{
uint16_t dircount;
uint32_t nextnextdir;
if (!SeekOK(tif, nextdir) || !ReadOK(tif, &dircount, 2))
{
TIFFErrorExtR(tif, module,
"Error fetching directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
(void)TIFFSeekFile(tif, nextdir + 2 + dircount * 12, SEEK_SET);
if (!ReadOK(tif, &nextnextdir, 4))
{
TIFFErrorExtR(tif, module, "Error fetching directory link");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&nextnextdir);
if (nextnextdir == tif->tif_diroff)
{
uint32_t m;
m = 0;
(void)TIFFSeekFile(tif, nextdir + 2 + dircount * 12,
SEEK_SET);
if (!WriteOK(tif, &m, 4))
{
TIFFErrorExtR(tif, module,
"Error writing directory link");
return (0);
}
tif->tif_diroff = 0;
/* Force a full-traversal to reach the zeroed pointer */
tif->tif_lastdiroff = 0;
break;
}
nextdir = nextnextdir;
}
}
/* Remove skipped offset from IFD loop directory list. */
_TIFFRemoveEntryFromDirectoryListByOffset(tif, torewritediroff);
}
else
{
if (tif->tif_header.big.tiff_diroff == tif->tif_diroff)
{
tif->tif_header.big.tiff_diroff = 0;
tif->tif_diroff = 0;
TIFFSeekFile(tif, 8, SEEK_SET);
if (!WriteOK(tif, &(tif->tif_header.big.tiff_diroff), 8))
{
TIFFErrorExtR(tif, tif->tif_name, "Error updating TIFF header");
return (0);
}
}
else
{
uint64_t nextdir;
nextdir = tif->tif_header.big.tiff_diroff;
while (1)
{
uint64_t dircount64;
uint16_t dircount;
uint64_t nextnextdir;
if (!SeekOK(tif, nextdir) || !ReadOK(tif, &dircount64, 8))
{
TIFFErrorExtR(tif, module,
"Error fetching directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&dircount64);
if (dircount64 > 0xFFFF)
{
TIFFErrorExtR(tif, module,
"Sanity check on tag count failed, likely "
"corrupt TIFF");
return (0);
}
dircount = (uint16_t)dircount64;
(void)TIFFSeekFile(tif, nextdir + 8 + dircount * 20, SEEK_SET);
if (!ReadOK(tif, &nextnextdir, 8))
{
TIFFErrorExtR(tif, module, "Error fetching directory link");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&nextnextdir);
if (nextnextdir == tif->tif_diroff)
{
uint64_t m;
m = 0;
(void)TIFFSeekFile(tif, nextdir + 8 + dircount * 20,
SEEK_SET);
if (!WriteOK(tif, &m, 8))
{
TIFFErrorExtR(tif, module,
"Error writing directory link");
return (0);
}
tif->tif_diroff = 0;
/* Force a full-traversal to reach the zeroed pointer */
tif->tif_lastdiroff = 0;
break;
}
nextdir = nextnextdir;
}
}
/* Remove skipped offset from IFD loop directory list. */
_TIFFRemoveEntryFromDirectoryListByOffset(tif, torewritediroff);
}
/*
* Now use TIFFWriteDirectorySec() normally.
*/
return TIFFWriteDirectorySec(tif, isimage, imagedone, pdiroff);
} /*-- TIFFRewriteDirectorySec() --*/
/*
* Similar to TIFFWriteDirectory(), but if the directory has already
* been written once, it is relocated to the end of the file, in case it
* has changed in size. Note that this will result in the loss of the
* previously used directory space.
*/
int TIFFRewriteDirectory(TIFF *tif)
{
return TIFFRewriteDirectorySec(tif, TRUE, TRUE, NULL);
}
static int TIFFWriteDirectorySec(TIFF *tif, int isimage, int imagedone,
uint64_t *pdiroff)
{
static const char module[] = "TIFFWriteDirectorySec";
uint32_t ndir;
TIFFDirEntry *dir;
uint32_t dirsize;
void *dirmem;
uint32_t m;
if (tif->tif_mode == O_RDONLY)
return (1);
_TIFFFillStriles(tif);
/*
* Clear write state so that subsequent images with
* different characteristics get the right buffers
* setup for them.
*/
if (imagedone)
{
if (tif->tif_flags & TIFF_POSTENCODE)
{
tif->tif_flags &= ~TIFF_POSTENCODE;
if (!(*tif->tif_postencode)(tif))
{
TIFFErrorExtR(tif, module,
"Error post-encoding before directory write");
return (0);
}
}
(*tif->tif_close)(tif); /* shutdown encoder */
/*
* Flush any data that might have been written
* by the compression close+cleanup routines. But
* be careful not to write stuff if we didn't add data
* in the previous steps as the "rawcc" data may well be
* a previously read tile/strip in mixed read/write mode.
*/
if (tif->tif_rawcc > 0 && (tif->tif_flags & TIFF_BEENWRITING) != 0)
{
if (!TIFFFlushData1(tif))
{
TIFFErrorExtR(tif, module,
"Error flushing data before directory write");
return (0);
}
}
if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata)
{
_TIFFfreeExt(tif, tif->tif_rawdata);
tif->tif_rawdata = NULL;
tif->tif_rawcc = 0;
tif->tif_rawdatasize = 0;
tif->tif_rawdataoff = 0;
tif->tif_rawdataloaded = 0;
}
tif->tif_flags &= ~(TIFF_BEENWRITING | TIFF_BUFFERSETUP);
}
if (TIFFFieldSet(tif, FIELD_COMPRESSION) &&
(tif->tif_dir.td_compression == COMPRESSION_DEFLATE))
{
TIFFWarningExtR(tif, module,
"Creating TIFF with legacy Deflate codec identifier, "
"COMPRESSION_ADOBE_DEFLATE is more widely supported");
}
dir = NULL;
dirmem = NULL;
dirsize = 0;
while (1)
{
/* The first loop only determines "ndir" and uses TIFFLinkDirectory() to
* set the offset at which the IFD is to be written to the file.
* The second loop writes IFD entries to the file. */
ndir = 0;
if (dir == NULL)
tif->tif_dir.td_dirdatasize_write = 0;
if (isimage)
{
if (TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS))
{
if (!TIFFWriteDirectoryTagShortLong(tif, &ndir, dir,
TIFFTAG_IMAGEWIDTH,
tif->tif_dir.td_imagewidth))
goto bad;
if (!TIFFWriteDirectoryTagShortLong(
tif, &ndir, dir, TIFFTAG_IMAGELENGTH,
tif->tif_dir.td_imagelength))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_TILEDIMENSIONS))
{
if (!TIFFWriteDirectoryTagShortLong(tif, &ndir, dir,
TIFFTAG_TILEWIDTH,
tif->tif_dir.td_tilewidth))
goto bad;
if (!TIFFWriteDirectoryTagShortLong(tif, &ndir, dir,
TIFFTAG_TILELENGTH,
tif->tif_dir.td_tilelength))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_RESOLUTION))
{
if (!TIFFWriteDirectoryTagRational(tif, &ndir, dir,
TIFFTAG_XRESOLUTION,
tif->tif_dir.td_xresolution))
goto bad;
if (!TIFFWriteDirectoryTagRational(tif, &ndir, dir,
TIFFTAG_YRESOLUTION,
tif->tif_dir.td_yresolution))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_POSITION))
{
if (!TIFFWriteDirectoryTagRational(tif, &ndir, dir,
TIFFTAG_XPOSITION,
tif->tif_dir.td_xposition))
goto bad;
if (!TIFFWriteDirectoryTagRational(tif, &ndir, dir,
TIFFTAG_YPOSITION,
tif->tif_dir.td_yposition))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_SUBFILETYPE))
{
if (!TIFFWriteDirectoryTagLong(tif, &ndir, dir,
TIFFTAG_SUBFILETYPE,
tif->tif_dir.td_subfiletype))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_BITSPERSAMPLE))
{
if (!TIFFWriteDirectoryTagShortPerSample(
tif, &ndir, dir, TIFFTAG_BITSPERSAMPLE,
tif->tif_dir.td_bitspersample))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_COMPRESSION))
{
if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir,
TIFFTAG_COMPRESSION,
tif->tif_dir.td_compression))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_PHOTOMETRIC))
{
if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir,
TIFFTAG_PHOTOMETRIC,
tif->tif_dir.td_photometric))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_THRESHHOLDING))
{
if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir,
TIFFTAG_THRESHHOLDING,
tif->tif_dir.td_threshholding))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_FILLORDER))
{
if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir,
TIFFTAG_FILLORDER,
tif->tif_dir.td_fillorder))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_ORIENTATION))
{
if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir,
TIFFTAG_ORIENTATION,
tif->tif_dir.td_orientation))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_SAMPLESPERPIXEL))
{
if (!TIFFWriteDirectoryTagShort(
tif, &ndir, dir, TIFFTAG_SAMPLESPERPIXEL,
tif->tif_dir.td_samplesperpixel))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_ROWSPERSTRIP))
{
if (!TIFFWriteDirectoryTagShortLong(
tif, &ndir, dir, TIFFTAG_ROWSPERSTRIP,
tif->tif_dir.td_rowsperstrip))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_MINSAMPLEVALUE))
{
if (!TIFFWriteDirectoryTagShortPerSample(
tif, &ndir, dir, TIFFTAG_MINSAMPLEVALUE,
tif->tif_dir.td_minsamplevalue))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_MAXSAMPLEVALUE))
{
if (!TIFFWriteDirectoryTagShortPerSample(
tif, &ndir, dir, TIFFTAG_MAXSAMPLEVALUE,
tif->tif_dir.td_maxsamplevalue))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_PLANARCONFIG))
{
if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir,
TIFFTAG_PLANARCONFIG,
tif->tif_dir.td_planarconfig))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_RESOLUTIONUNIT))
{
if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir,
TIFFTAG_RESOLUTIONUNIT,
tif->tif_dir.td_resolutionunit))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_PAGENUMBER))
{
if (!TIFFWriteDirectoryTagShortArray(
tif, &ndir, dir, TIFFTAG_PAGENUMBER, 2,
&tif->tif_dir.td_pagenumber[0]))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_STRIPBYTECOUNTS))
{
if (!isTiled(tif))
{
if (!TIFFWriteDirectoryTagLongLong8Array(
tif, &ndir, dir, TIFFTAG_STRIPBYTECOUNTS,
tif->tif_dir.td_nstrips,
tif->tif_dir.td_stripbytecount_p))
goto bad;
}
else
{
if (!TIFFWriteDirectoryTagLongLong8Array(
tif, &ndir, dir, TIFFTAG_TILEBYTECOUNTS,
tif->tif_dir.td_nstrips,
tif->tif_dir.td_stripbytecount_p))
goto bad;
}
}
if (TIFFFieldSet(tif, FIELD_STRIPOFFSETS))
{
if (!isTiled(tif))
{
/* td_stripoffset_p might be NULL in an odd OJPEG case. See
* tif_dirread.c around line 3634.
* XXX: OJPEG hack.
* If a) compression is OJPEG, b) it's not a tiled TIFF,
* and c) the number of strips is 1,
* then we tolerate the absence of stripoffsets tag,
* because, presumably, all required data is in the
* JpegInterchangeFormat stream.
* We can get here when using tiffset on such a file.
* See http://bugzilla.maptools.org/show_bug.cgi?id=2500
*/
if (tif->tif_dir.td_stripoffset_p != NULL &&
!TIFFWriteDirectoryTagLongLong8Array(
tif, &ndir, dir, TIFFTAG_STRIPOFFSETS,
tif->tif_dir.td_nstrips,
tif->tif_dir.td_stripoffset_p))
goto bad;
}
else
{
if (!TIFFWriteDirectoryTagLongLong8Array(
tif, &ndir, dir, TIFFTAG_TILEOFFSETS,
tif->tif_dir.td_nstrips,
tif->tif_dir.td_stripoffset_p))
goto bad;
}
}
if (TIFFFieldSet(tif, FIELD_COLORMAP))
{
if (!TIFFWriteDirectoryTagColormap(tif, &ndir, dir))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_EXTRASAMPLES))
{
if (tif->tif_dir.td_extrasamples)
{
uint16_t na;
uint16_t *nb;
TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES, &na, &nb);
if (!TIFFWriteDirectoryTagShortArray(
tif, &ndir, dir, TIFFTAG_EXTRASAMPLES, na, nb))
goto bad;
}
}
if (TIFFFieldSet(tif, FIELD_SAMPLEFORMAT))
{
if (!TIFFWriteDirectoryTagShortPerSample(
tif, &ndir, dir, TIFFTAG_SAMPLEFORMAT,
tif->tif_dir.td_sampleformat))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_SMINSAMPLEVALUE))
{
if (!TIFFWriteDirectoryTagSampleformatArray(
tif, &ndir, dir, TIFFTAG_SMINSAMPLEVALUE,
tif->tif_dir.td_samplesperpixel,
tif->tif_dir.td_sminsamplevalue))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_SMAXSAMPLEVALUE))
{
if (!TIFFWriteDirectoryTagSampleformatArray(
tif, &ndir, dir, TIFFTAG_SMAXSAMPLEVALUE,
tif->tif_dir.td_samplesperpixel,
tif->tif_dir.td_smaxsamplevalue))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_IMAGEDEPTH))
{
if (!TIFFWriteDirectoryTagLong(tif, &ndir, dir,
TIFFTAG_IMAGEDEPTH,
tif->tif_dir.td_imagedepth))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_TILEDEPTH))
{
if (!TIFFWriteDirectoryTagLong(tif, &ndir, dir,
TIFFTAG_TILEDEPTH,
tif->tif_dir.td_tiledepth))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_HALFTONEHINTS))
{
if (!TIFFWriteDirectoryTagShortArray(
tif, &ndir, dir, TIFFTAG_HALFTONEHINTS, 2,
&tif->tif_dir.td_halftonehints[0]))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_YCBCRSUBSAMPLING))
{
if (!TIFFWriteDirectoryTagShortArray(
tif, &ndir, dir, TIFFTAG_YCBCRSUBSAMPLING, 2,
&tif->tif_dir.td_ycbcrsubsampling[0]))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_YCBCRPOSITIONING))
{
if (!TIFFWriteDirectoryTagShort(
tif, &ndir, dir, TIFFTAG_YCBCRPOSITIONING,
tif->tif_dir.td_ycbcrpositioning))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_REFBLACKWHITE))
{
if (!TIFFWriteDirectoryTagRationalArray(
tif, &ndir, dir, TIFFTAG_REFERENCEBLACKWHITE, 6,
tif->tif_dir.td_refblackwhite))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_TRANSFERFUNCTION))
{
if (!TIFFWriteDirectoryTagTransferfunction(tif, &ndir, dir))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_INKNAMES))
{
if (!TIFFWriteDirectoryTagAscii(
tif, &ndir, dir, TIFFTAG_INKNAMES,
tif->tif_dir.td_inknameslen, tif->tif_dir.td_inknames))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_NUMBEROFINKS))
{
if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir,
TIFFTAG_NUMBEROFINKS,
tif->tif_dir.td_numberofinks))
goto bad;
}
if (TIFFFieldSet(tif, FIELD_SUBIFD))
{
if (!TIFFWriteDirectoryTagSubifd(tif, &ndir, dir))
goto bad;
}
{
uint32_t n;
for (n = 0; n < tif->tif_nfields; n++)
{
const TIFFField *o;
o = tif->tif_fields[n];
if ((o->field_bit >= FIELD_CODEC) &&
(TIFFFieldSet(tif, o->field_bit)))
{
switch (o->set_field_type)
{
case TIFF_SETGET_ASCII:
{
uint32_t pa;
char *pb;
assert(o->field_type == TIFF_ASCII);
assert(o->field_readcount == TIFF_VARIABLE);
assert(o->field_passcount == 0);
TIFFGetField(tif, o->field_tag, &pb);
pa = (uint32_t)(strlen(pb));
if (!TIFFWriteDirectoryTagAscii(
tif, &ndir, dir, (uint16_t)o->field_tag,
pa, pb))
goto bad;
}
break;
case TIFF_SETGET_UINT16:
{
uint16_t p;
assert(o->field_type == TIFF_SHORT);
assert(o->field_readcount == 1);
assert(o->field_passcount == 0);
TIFFGetField(tif, o->field_tag, &p);
if (!TIFFWriteDirectoryTagShort(
tif, &ndir, dir, (uint16_t)o->field_tag,
p))
goto bad;
}
break;
case TIFF_SETGET_UINT32:
{
uint32_t p;
assert(o->field_type == TIFF_LONG);
assert(o->field_readcount == 1);
assert(o->field_passcount == 0);
TIFFGetField(tif, o->field_tag, &p);
if (!TIFFWriteDirectoryTagLong(
tif, &ndir, dir, (uint16_t)o->field_tag,
p))
goto bad;
}
break;
case TIFF_SETGET_C32_UINT8:
{
uint32_t pa;
void *pb;
assert(o->field_type == TIFF_UNDEFINED);
assert(o->field_readcount == TIFF_VARIABLE2);
assert(o->field_passcount == 1);
TIFFGetField(tif, o->field_tag, &pa, &pb);
if (!TIFFWriteDirectoryTagUndefinedArray(
tif, &ndir, dir, (uint16_t)o->field_tag,
pa, pb))
goto bad;
}
break;
default:
TIFFErrorExtR(
tif, module,
"Cannot write tag %" PRIu32 " (%s)",
TIFFFieldTag(o),
o->field_name ? o->field_name : "unknown");
goto bad;
}
}
}
}
}
for (m = 0; m < (uint32_t)(tif->tif_dir.td_customValueCount); m++)
{
uint16_t tag =
(uint16_t)tif->tif_dir.td_customValues[m].info->field_tag;
uint32_t count = tif->tif_dir.td_customValues[m].count;
switch (tif->tif_dir.td_customValues[m].info->field_type)
{
case TIFF_ASCII:
if (!TIFFWriteDirectoryTagAscii(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_UNDEFINED:
if (!TIFFWriteDirectoryTagUndefinedArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_BYTE:
if (!TIFFWriteDirectoryTagByteArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_SBYTE:
if (!TIFFWriteDirectoryTagSbyteArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_SHORT:
if (!TIFFWriteDirectoryTagShortArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_SSHORT:
if (!TIFFWriteDirectoryTagSshortArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_LONG:
if (!TIFFWriteDirectoryTagLongArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_SLONG:
if (!TIFFWriteDirectoryTagSlongArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_LONG8:
if (!TIFFWriteDirectoryTagLong8Array(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_SLONG8:
if (!TIFFWriteDirectoryTagSlong8Array(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_RATIONAL:
{
/*-- Rational2Double: For Rationals evaluate
* "set_field_type" to determine internal storage size. */
int tv_size;
tv_size = TIFFFieldSetGetSize(
tif->tif_dir.td_customValues[m].info);
if (tv_size == 8)
{
if (!TIFFWriteDirectoryTagRationalDoubleArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
}
else
{
/*-- default should be tv_size == 4 */
if (!TIFFWriteDirectoryTagRationalArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
/*-- ToDo: After Testing, this should be removed and
* tv_size==4 should be set as default. */
if (tv_size != 4)
{
TIFFErrorExtR(tif,
"TIFFLib: _TIFFWriteDirectorySec()",
"Rational2Double: .set_field_type is "
"not 4 but %d",
tv_size);
}
}
}
break;
case TIFF_SRATIONAL:
{
/*-- Rational2Double: For Rationals evaluate
* "set_field_type" to determine internal storage size. */
int tv_size;
tv_size = TIFFFieldSetGetSize(
tif->tif_dir.td_customValues[m].info);
if (tv_size == 8)
{
if (!TIFFWriteDirectoryTagSrationalDoubleArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
}
else
{
/*-- default should be tv_size == 4 */
if (!TIFFWriteDirectoryTagSrationalArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
/*-- ToDo: After Testing, this should be removed and
* tv_size==4 should be set as default. */
if (tv_size != 4)
{
TIFFErrorExtR(tif,
"TIFFLib: _TIFFWriteDirectorySec()",
"Rational2Double: .set_field_type is "
"not 4 but %d",
tv_size);
}
}
}
break;
case TIFF_FLOAT:
if (!TIFFWriteDirectoryTagFloatArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_DOUBLE:
if (!TIFFWriteDirectoryTagDoubleArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_IFD:
if (!TIFFWriteDirectoryTagIfdArray(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
case TIFF_IFD8:
if (!TIFFWriteDirectoryTagIfdIfd8Array(
tif, &ndir, dir, tag, count,
tif->tif_dir.td_customValues[m].value))
goto bad;
break;
default:
assert(0); /* we should never get here */
break;
}
}
/* "break" if IFD has been written above in second pass.*/
if (dir != NULL)
break;
/* Evaluate IFD data size: Finally, add the size of the IFD tag entries
* themselves. */
if (!(tif->tif_flags & TIFF_BIGTIFF))
tif->tif_dir.td_dirdatasize_write += 2 + ndir * 12 + 4;
else
tif->tif_dir.td_dirdatasize_write += 8 + ndir * 20 + 8;
/* Setup a new directory within first pass. */
dir = _TIFFmallocExt(tif, ndir * sizeof(TIFFDirEntry));
if (dir == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
goto bad;
}
if (isimage)
{
/* Check, weather the IFD to be written is new or an already written
* IFD can be overwritten or needs to be re-written to a different
* location in the file because the IFD is extended with additional
* tags or the IFD data size is increased.
* - tif_diroff == 0, if a new directory has to be linked.
* - tif_diroff != 0, IFD has been re-read from file and will be
* overwritten or re-written.
*/
if (tif->tif_diroff == 0)
{
if (!TIFFLinkDirectory(tif))
goto bad;
}
else if (tif->tif_dir.td_dirdatasize_write >
tif->tif_dir.td_dirdatasize_read)
{
if (dir != NULL)
{
_TIFFfreeExt(tif, dir);
dir = NULL;
}
if (!TIFFRewriteDirectorySec(tif, isimage, imagedone, pdiroff))
goto bad;
return (1);
}
}
else
{
/* For !isimage, which means custom-IFD like EXIFIFD or
* checkpointing an IFD, determine whether to overwrite or append at
* the end of the file.
*/
if (!((tif->tif_dir.td_dirdatasize_read > 0) &&
(tif->tif_dir.td_dirdatasize_write <=
tif->tif_dir.td_dirdatasize_read)))
{
/* Append at end of file and increment to an even offset. */
tif->tif_diroff =
(TIFFSeekFile(tif, 0, SEEK_END) + 1) & (~((toff_t)1));
}
}
/* Return IFD offset */
if (pdiroff != NULL)
*pdiroff = tif->tif_diroff;
if (!(tif->tif_flags & TIFF_BIGTIFF))
dirsize = 2 + ndir * 12 + 4;
else
dirsize = 8 + ndir * 20 + 8;
/* Append IFD data stright after the IFD tag entries.
* Data that does not fit into an IFD tag entry is written to the file
* in the second pass of the while loop. That offset is stored in "dir".
*/
tif->tif_dataoff = tif->tif_diroff + dirsize;
if (!(tif->tif_flags & TIFF_BIGTIFF))
tif->tif_dataoff = (uint32_t)tif->tif_dataoff;
if ((tif->tif_dataoff < tif->tif_diroff) ||
(tif->tif_dataoff < (uint64_t)dirsize))
{
TIFFErrorExtR(tif, module, "Maximum TIFF file size exceeded");
goto bad;
}
if (tif->tif_dataoff & 1)
tif->tif_dataoff++;
} /* while() */
if (isimage)
{
/* For SubIFDs remember offset of SubIFD tag within main IFD.
* However, might be already done in TIFFWriteDirectoryTagSubifd() if
* there are more than one SubIFD. */
if (TIFFFieldSet(tif, FIELD_SUBIFD) && (tif->tif_subifdoff == 0))
{
uint32_t na;
TIFFDirEntry *nb;
for (na = 0, nb = dir;; na++, nb++)
{
if (na == ndir)
{
TIFFErrorExtR(tif, module, "Cannot find SubIFD tag");
goto bad;
}
if (nb->tdir_tag == TIFFTAG_SUBIFD)
break;
}
if (!(tif->tif_flags & TIFF_BIGTIFF))
tif->tif_subifdoff = tif->tif_diroff + 2 + na * 12 + 8;
else
tif->tif_subifdoff = tif->tif_diroff + 8 + na * 20 + 12;
}
}
/* Copy/swab IFD entries from "dir" into "dirmem",
* which is then written to file. */
dirmem = _TIFFmallocExt(tif, dirsize);
if (dirmem == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
goto bad;
}
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
uint8_t *n;
uint32_t nTmp;
TIFFDirEntry *o;
n = dirmem;
*(uint16_t *)n = (uint16_t)ndir;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort((uint16_t *)n);
n += 2;
o = dir;
for (m = 0; m < ndir; m++)
{
*(uint16_t *)n = o->tdir_tag;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort((uint16_t *)n);
n += 2;
*(uint16_t *)n = o->tdir_type;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort((uint16_t *)n);
n += 2;
nTmp = (uint32_t)o->tdir_count;
_TIFFmemcpy(n, &nTmp, 4);
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong((uint32_t *)n);
n += 4;
/* This is correct. The data has been */
/* swabbed previously in TIFFWriteDirectoryTagData */
_TIFFmemcpy(n, &o->tdir_offset, 4);
n += 4;
o++;
}
nTmp = (uint32_t)tif->tif_nextdiroff;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&nTmp);
_TIFFmemcpy(n, &nTmp, 4);
}
else
{
uint8_t *n;
TIFFDirEntry *o;
n = dirmem;
*(uint64_t *)n = ndir;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8((uint64_t *)n);
n += 8;
o = dir;
for (m = 0; m < ndir; m++)
{
*(uint16_t *)n = o->tdir_tag;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort((uint16_t *)n);
n += 2;
*(uint16_t *)n = o->tdir_type;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort((uint16_t *)n);
n += 2;
_TIFFmemcpy(n, &o->tdir_count, 8);
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8((uint64_t *)n);
n += 8;
_TIFFmemcpy(n, &o->tdir_offset, 8);
n += 8;
o++;
}
_TIFFmemcpy(n, &tif->tif_nextdiroff, 8);
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8((uint64_t *)n);
}
_TIFFfreeExt(tif, dir);
dir = NULL;
if (!SeekOK(tif, tif->tif_diroff))
{
TIFFErrorExtR(tif, module,
"IO error writing directory at seek to offset");
goto bad;
}
if (!WriteOK(tif, dirmem, (tmsize_t)dirsize))
{
TIFFErrorExtR(tif, module, "IO error writing directory");
goto bad;
}
_TIFFfreeExt(tif, dirmem);
/* Increment tif_curdir if IFD wasn't already written to file and no error
* occurred during IFD writing above. */
if (isimage && !tif->tif_dir.td_iswrittentofile)
{
if (!((tif->tif_flags & TIFF_INSUBIFD) &&
!(TIFFFieldSet(tif, FIELD_SUBIFD))))
{
/*-- Normal main-IFD case --*/
if (tif->tif_curdircount != TIFF_NON_EXISTENT_DIR_NUMBER)
{
tif->tif_curdir = tif->tif_curdircount;
}
else
{
/*ToDo SU: NEW_IFD_CURDIR_INCREMENTING: Delete this
* unexpected case after some testing time. */
/* Attention: tif->tif_curdircount is already set within
* TIFFNumberOfDirectories() */
tif->tif_curdircount = TIFFNumberOfDirectories(tif);
tif->tif_curdir = tif->tif_curdircount;
TIFFErrorExtR(
tif, module,
"tif_curdircount is TIFF_NON_EXISTENT_DIR_NUMBER, "
"not expected !! Line %d",
__LINE__);
goto bad;
}
}
else
{
/*-- SubIFD case -- */
/* tif_curdir is always set to 0 for all SubIFDs. */
tif->tif_curdir = 0;
}
}
/* Increment tif_curdircount only if main-IFD of an image was not already
* present on file. */
/* Check in combination with (... && !(TIFFFieldSet(tif, FIELD_SUBIFD)))
* is necessary here because TIFF_INSUBIFD was already set above for the
* next SubIFD when this main-IFD (with FIELD_SUBIFD) is currently being
* written. */
if (isimage && !tif->tif_dir.td_iswrittentofile &&
!((tif->tif_flags & TIFF_INSUBIFD) &&
!(TIFFFieldSet(tif, FIELD_SUBIFD))))
tif->tif_curdircount++;
tif->tif_dir.td_iswrittentofile = TRUE;
/* Reset SubIFD writing stage after last SubIFD has been written. */
if (imagedone && (tif->tif_flags & TIFF_INSUBIFD) && tif->tif_nsubifd == 0)
tif->tif_flags &= ~TIFF_INSUBIFD;
/* Add or update this directory to the IFD list. */
if (!_TIFFCheckDirNumberAndOffset(tif, tif->tif_curdir, tif->tif_diroff))
{
TIFFErrorExtR(tif, module,
"Starting directory %u at offset 0x%" PRIx64 " (%" PRIu64
") might cause an IFD loop",
tif->tif_curdir, tif->tif_diroff, tif->tif_diroff);
}
if (imagedone)
{
TIFFFreeDirectory(tif);
tif->tif_flags &= ~TIFF_DIRTYDIRECT;
tif->tif_flags &= ~TIFF_DIRTYSTRIP;
(*tif->tif_cleanup)(tif);
/* Reset directory-related state for subsequent directories. */
TIFFCreateDirectory(tif);
}
else
{
/* IFD is only checkpointed to file (or a custom IFD like EXIF is
* written), thus set IFD data size written to file. */
tif->tif_dir.td_dirdatasize_read = tif->tif_dir.td_dirdatasize_write;
}
return (1);
bad:
if (dir != NULL)
_TIFFfreeExt(tif, dir);
if (dirmem != NULL)
_TIFFfreeExt(tif, dirmem);
return (0);
}
static int8_t TIFFClampDoubleToInt8(double val)
{
if (val > 127)
return 127;
if (val < -128 || val != val)
return -128;
return (int8_t)val;
}
static int16_t TIFFClampDoubleToInt16(double val)
{
if (val > 32767)
return 32767;
if (val < -32768 || val != val)
return -32768;
return (int16_t)val;
}
static int32_t TIFFClampDoubleToInt32(double val)
{
if (val > 0x7FFFFFFF)
return 0x7FFFFFFF;
if (val < -0x7FFFFFFF - 1 || val != val)
return -0x7FFFFFFF - 1;
return (int32_t)val;
}
static uint8_t TIFFClampDoubleToUInt8(double val)
{
if (val < 0)
return 0;
if (val > 255 || val != val)
return 255;
return (uint8_t)val;
}
static uint16_t TIFFClampDoubleToUInt16(double val)
{
if (val < 0)
return 0;
if (val > 65535 || val != val)
return 65535;
return (uint16_t)val;
}
static uint32_t TIFFClampDoubleToUInt32(double val)
{
if (val < 0)
return 0;
if (val > 0xFFFFFFFFU || val != val)
return 0xFFFFFFFFU;
return (uint32_t)val;
}
static int TIFFWriteDirectoryTagSampleformatArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
double *value)
{
static const char module[] = "TIFFWriteDirectoryTagSampleformatArray";
void *conv;
uint32_t i;
int ok;
conv = _TIFFmallocExt(tif, count * sizeof(double));
if (conv == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
switch (tif->tif_dir.td_sampleformat)
{
case SAMPLEFORMAT_IEEEFP:
if (tif->tif_dir.td_bitspersample <= 32)
{
for (i = 0; i < count; ++i)
((float *)conv)[i] = _TIFFClampDoubleToFloat(value[i]);
ok = TIFFWriteDirectoryTagFloatArray(tif, ndir, dir, tag, count,
(float *)conv);
}
else
{
ok = TIFFWriteDirectoryTagDoubleArray(tif, ndir, dir, tag,
count, value);
}
break;
case SAMPLEFORMAT_INT:
if (tif->tif_dir.td_bitspersample <= 8)
{
for (i = 0; i < count; ++i)
((int8_t *)conv)[i] = TIFFClampDoubleToInt8(value[i]);
ok = TIFFWriteDirectoryTagSbyteArray(tif, ndir, dir, tag, count,
(int8_t *)conv);
}
else if (tif->tif_dir.td_bitspersample <= 16)
{
for (i = 0; i < count; ++i)
((int16_t *)conv)[i] = TIFFClampDoubleToInt16(value[i]);
ok = TIFFWriteDirectoryTagSshortArray(tif, ndir, dir, tag,
count, (int16_t *)conv);
}
else
{
for (i = 0; i < count; ++i)
((int32_t *)conv)[i] = TIFFClampDoubleToInt32(value[i]);
ok = TIFFWriteDirectoryTagSlongArray(tif, ndir, dir, tag, count,
(int32_t *)conv);
}
break;
case SAMPLEFORMAT_UINT:
if (tif->tif_dir.td_bitspersample <= 8)
{
for (i = 0; i < count; ++i)
((uint8_t *)conv)[i] = TIFFClampDoubleToUInt8(value[i]);
ok = TIFFWriteDirectoryTagByteArray(tif, ndir, dir, tag, count,
(uint8_t *)conv);
}
else if (tif->tif_dir.td_bitspersample <= 16)
{
for (i = 0; i < count; ++i)
((uint16_t *)conv)[i] = TIFFClampDoubleToUInt16(value[i]);
ok = TIFFWriteDirectoryTagShortArray(tif, ndir, dir, tag, count,
(uint16_t *)conv);
}
else
{
for (i = 0; i < count; ++i)
((uint32_t *)conv)[i] = TIFFClampDoubleToUInt32(value[i]);
ok = TIFFWriteDirectoryTagLongArray(tif, ndir, dir, tag, count,
(uint32_t *)conv);
}
break;
default:
ok = 0;
}
_TIFFfreeExt(tif, conv);
return (ok);
}
static int TIFFWriteDirectoryTagAscii(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, char *value)
{
return (
TIFFWriteDirectoryTagCheckedAscii(tif, ndir, dir, tag, count, value));
}
static int TIFFWriteDirectoryTagUndefinedArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint8_t *value)
{
return (TIFFWriteDirectoryTagCheckedUndefinedArray(tif, ndir, dir, tag,
count, value));
}
static int TIFFWriteDirectoryTagByteArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint8_t *value)
{
return (TIFFWriteDirectoryTagCheckedByteArray(tif, ndir, dir, tag, count,
value));
}
static int TIFFWriteDirectoryTagSbyteArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, int8_t *value)
{
return (TIFFWriteDirectoryTagCheckedSbyteArray(tif, ndir, dir, tag, count,
value));
}
static int TIFFWriteDirectoryTagShort(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint16_t value)
{
return (TIFFWriteDirectoryTagCheckedShort(tif, ndir, dir, tag, value));
}
static int TIFFWriteDirectoryTagShortArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint16_t *value)
{
return (TIFFWriteDirectoryTagCheckedShortArray(tif, ndir, dir, tag, count,
value));
}
static int TIFFWriteDirectoryTagShortPerSample(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint16_t value)
{
static const char module[] = "TIFFWriteDirectoryTagShortPerSample";
uint16_t *m;
uint16_t *na;
uint16_t nb;
int o;
if (dir == NULL)
{
/* only evaluate IFD data size and inc. ndir */
return (TIFFWriteDirectoryTagCheckedShortArray(
tif, ndir, dir, tag, tif->tif_dir.td_samplesperpixel, NULL));
}
m = _TIFFmallocExt(tif, tif->tif_dir.td_samplesperpixel * sizeof(uint16_t));
if (m == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (na = m, nb = 0; nb < tif->tif_dir.td_samplesperpixel; na++, nb++)
*na = value;
o = TIFFWriteDirectoryTagCheckedShortArray(
tif, ndir, dir, tag, tif->tif_dir.td_samplesperpixel, m);
_TIFFfreeExt(tif, m);
return (o);
}
static int TIFFWriteDirectoryTagSshortArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, int16_t *value)
{
return (TIFFWriteDirectoryTagCheckedSshortArray(tif, ndir, dir, tag, count,
value));
}
static int TIFFWriteDirectoryTagLong(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t value)
{
return (TIFFWriteDirectoryTagCheckedLong(tif, ndir, dir, tag, value));
}
static int TIFFWriteDirectoryTagLongArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint32_t *value)
{
return (TIFFWriteDirectoryTagCheckedLongArray(tif, ndir, dir, tag, count,
value));
}
static int TIFFWriteDirectoryTagSlongArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, int32_t *value)
{
return (TIFFWriteDirectoryTagCheckedSlongArray(tif, ndir, dir, tag, count,
value));
}
/************************************************************************/
/* TIFFWriteDirectoryTagLong8Array() */
/* */
/* Write either Long8 or Long array depending on file type. */
/************************************************************************/
static int TIFFWriteDirectoryTagLong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint64_t *value)
{
static const char module[] = "TIFFWriteDirectoryTagLong8Array";
uint64_t *ma;
uint32_t mb;
uint32_t *p;
uint32_t *q;
int o;
/* is this just a counting pass? */
if (dir == NULL)
{
/* only evaluate IFD data size and inc. ndir */
return (TIFFWriteDirectoryTagCheckedLong8Array(tif, ndir, dir, tag,
count, value));
}
/* We always write Long8 for BigTIFF, no checking needed. */
if (tif->tif_flags & TIFF_BIGTIFF)
return (TIFFWriteDirectoryTagCheckedLong8Array(tif, ndir, dir, tag,
count, value));
/*
** For classic tiff we want to verify everything is in range for long
** and convert to long format.
*/
p = _TIFFmallocExt(tif, count * sizeof(uint32_t));
if (p == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++)
{
if (*ma > 0xFFFFFFFF)
{
TIFFErrorExtR(tif, module,
"Attempt to write unsigned long value %" PRIu64
" larger than 0xFFFFFFFF for tag %d in Classic TIFF "
"file. TIFF file writing aborted",
*ma, tag);
_TIFFfreeExt(tif, p);
return (0);
}
*q = (uint32_t)(*ma);
}
o = TIFFWriteDirectoryTagCheckedLongArray(tif, ndir, dir, tag, count, p);
_TIFFfreeExt(tif, p);
return (o);
}
/************************************************************************/
/* TIFFWriteDirectoryTagSlong8Array() */
/* */
/* Write either SLong8 or SLong array depending on file type. */
/************************************************************************/
static int TIFFWriteDirectoryTagSlong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, int64_t *value)
{
static const char module[] = "TIFFWriteDirectoryTagSlong8Array";
int64_t *ma;
uint32_t mb;
int32_t *p;
int32_t *q;
int o;
/* is this just a counting pass? */
if (dir == NULL)
{
/* only evaluate IFD data size and inc. ndir */
return (TIFFWriteDirectoryTagCheckedSlong8Array(tif, ndir, dir, tag,
count, value));
}
/* We always write SLong8 for BigTIFF, no checking needed. */
if (tif->tif_flags & TIFF_BIGTIFF)
return (TIFFWriteDirectoryTagCheckedSlong8Array(tif, ndir, dir, tag,
count, value));
/*
** For classic tiff we want to verify everything is in range for signed-long
** and convert to signed-long format.
*/
p = _TIFFmallocExt(tif, count * sizeof(uint32_t));
if (p == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++)
{
if (*ma > (2147483647))
{
TIFFErrorExtR(tif, module,
"Attempt to write signed long value %" PRIi64
" larger than 0x7FFFFFFF (2147483647) for tag %d in "
"Classic TIFF file. TIFF writing to file aborted",
*ma, tag);
_TIFFfreeExt(tif, p);
return (0);
}
else if (*ma < (-2147483647 - 1))
{
TIFFErrorExtR(tif, module,
"Attempt to write signed long value %" PRIi64
" smaller than 0x80000000 (-2147483648) for tag %d "
"in Classic TIFF file. TIFF writing to file aborted",
*ma, tag);
_TIFFfreeExt(tif, p);
return (0);
}
*q = (int32_t)(*ma);
}
o = TIFFWriteDirectoryTagCheckedSlongArray(tif, ndir, dir, tag, count, p);
_TIFFfreeExt(tif, p);
return (o);
}
static int TIFFWriteDirectoryTagRational(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
double value)
{
return (TIFFWriteDirectoryTagCheckedRational(tif, ndir, dir, tag, value));
}
static int TIFFWriteDirectoryTagRationalArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, float *value)
{
return (TIFFWriteDirectoryTagCheckedRationalArray(tif, ndir, dir, tag,
count, value));
}
static int TIFFWriteDirectoryTagSrationalArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, float *value)
{
return (TIFFWriteDirectoryTagCheckedSrationalArray(tif, ndir, dir, tag,
count, value));
}
/*-- Rational2Double: additional write functions */
static int TIFFWriteDirectoryTagRationalDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
double *value)
{
return (TIFFWriteDirectoryTagCheckedRationalDoubleArray(tif, ndir, dir, tag,
count, value));
}
static int TIFFWriteDirectoryTagSrationalDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
double *value)
{
return (TIFFWriteDirectoryTagCheckedSrationalDoubleArray(
tif, ndir, dir, tag, count, value));
}
static int TIFFWriteDirectoryTagFloatArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, float *value)
{
return (TIFFWriteDirectoryTagCheckedFloatArray(tif, ndir, dir, tag, count,
value));
}
static int TIFFWriteDirectoryTagDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, double *value)
{
return (TIFFWriteDirectoryTagCheckedDoubleArray(tif, ndir, dir, tag, count,
value));
}
static int TIFFWriteDirectoryTagIfdArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint32_t *value)
{
return (TIFFWriteDirectoryTagCheckedIfdArray(tif, ndir, dir, tag, count,
value));
}
static int TIFFWriteDirectoryTagShortLong(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t value)
{
if (value <= 0xFFFF)
return (TIFFWriteDirectoryTagCheckedShort(tif, ndir, dir, tag,
(uint16_t)value));
else
return (TIFFWriteDirectoryTagCheckedLong(tif, ndir, dir, tag, value));
}
static int _WriteAsType(TIFF *tif, uint64_t strile_size,
uint64_t uncompressed_threshold)
{
const uint16_t compression = tif->tif_dir.td_compression;
if (compression == COMPRESSION_NONE)
{
return strile_size > uncompressed_threshold;
}
else if (compression == COMPRESSION_JPEG ||
compression == COMPRESSION_LZW ||
compression == COMPRESSION_ADOBE_DEFLATE ||
compression == COMPRESSION_DEFLATE ||
compression == COMPRESSION_LZMA ||
compression == COMPRESSION_LERC ||
compression == COMPRESSION_ZSTD ||
compression == COMPRESSION_WEBP || compression == COMPRESSION_JXL)
{
/* For a few select compression types, we assume that in the worst */
/* case the compressed size will be 10 times the uncompressed size. */
/* This is overly pessismistic ! */
return strile_size >= uncompressed_threshold / 10;
}
return 1;
}
static int WriteAsLong8(TIFF *tif, uint64_t strile_size)
{
return _WriteAsType(tif, strile_size, 0xFFFFFFFFU);
}
static int WriteAsLong4(TIFF *tif, uint64_t strile_size)
{
return _WriteAsType(tif, strile_size, 0xFFFFU);
}
/************************************************************************/
/* TIFFWriteDirectoryTagLongLong8Array() */
/* */
/* Write out LONG8 array and write a SHORT/LONG/LONG8 depending */
/* on strile size and Classic/BigTIFF mode. */
/************************************************************************/
static int TIFFWriteDirectoryTagLongLong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint64_t *value)
{
static const char module[] = "TIFFWriteDirectoryTagLongLong8Array";
int o;
int write_aslong4;
if (tif->tif_dir.td_deferstrilearraywriting)
{
if (dir == NULL)
{
/* This is just a counting pass to count IFD entries.
* For deferstrilearraywriting no extra bytes will be written
* into IFD space. */
(*ndir)++;
return 1;
}
return TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_NOTYPE, 0, 0,
NULL);
}
if (tif->tif_flags & TIFF_BIGTIFF)
{
int write_aslong8 = 1;
/* In the case of ByteCounts array, we may be able to write them on LONG
* if the strip/tilesize is not too big. Also do that for count > 1 in
* the case someone would want to create a single-strip file with a
* growing height, in which case using LONG8 will be safer. */
if (count > 1 && tag == TIFFTAG_STRIPBYTECOUNTS)
{
write_aslong8 = WriteAsLong8(tif, TIFFStripSize64(tif));
}
else if (count > 1 && tag == TIFFTAG_TILEBYTECOUNTS)
{
write_aslong8 = WriteAsLong8(tif, TIFFTileSize64(tif));
}
if (write_aslong8)
{
return TIFFWriteDirectoryTagCheckedLong8Array(tif, ndir, dir, tag,
count, value);
}
}
write_aslong4 = 1;
if (count > 1 && tag == TIFFTAG_STRIPBYTECOUNTS)
{
write_aslong4 = WriteAsLong4(tif, TIFFStripSize64(tif));
}
else if (count > 1 && tag == TIFFTAG_TILEBYTECOUNTS)
{
write_aslong4 = WriteAsLong4(tif, TIFFTileSize64(tif));
}
if (write_aslong4)
{
/*
** For classic tiff we want to verify everything is in range for LONG
** and convert to long format.
*/
uint32_t *p = _TIFFmallocExt(tif, count * sizeof(uint32_t));
uint32_t *q;
uint64_t *ma;
uint32_t mb;
if (p == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++)
{
if (*ma > 0xFFFFFFFF)
{
TIFFErrorExtR(tif, module,
"Attempt to write value larger than 0xFFFFFFFF "
"in LONG array.");
_TIFFfreeExt(tif, p);
return (0);
}
*q = (uint32_t)(*ma);
}
o = TIFFWriteDirectoryTagCheckedLongArray(tif, ndir, dir, tag, count,
p);
_TIFFfreeExt(tif, p);
}
else
{
uint16_t *p = _TIFFmallocExt(tif, count * sizeof(uint16_t));
uint16_t *q;
uint64_t *ma;
uint32_t mb;
if (p == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++)
{
if (*ma > 0xFFFF)
{
/* Should not happen normally given the check we did before */
TIFFErrorExtR(tif, module,
"Attempt to write value larger than 0xFFFF in "
"SHORT array.");
_TIFFfreeExt(tif, p);
return (0);
}
*q = (uint16_t)(*ma);
}
o = TIFFWriteDirectoryTagCheckedShortArray(tif, ndir, dir, tag, count,
p);
_TIFFfreeExt(tif, p);
}
return (o);
}
/************************************************************************/
/* TIFFWriteDirectoryTagIfdIfd8Array() */
/* */
/* Write either IFD8 or IFD array depending on file type. */
/************************************************************************/
static int TIFFWriteDirectoryTagIfdIfd8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint64_t *value)
{
static const char module[] = "TIFFWriteDirectoryTagIfdIfd8Array";
uint64_t *ma;
uint32_t mb;
uint32_t *p;
uint32_t *q;
int o;
/* We always write IFD8 for BigTIFF, no checking needed. */
if (tif->tif_flags & TIFF_BIGTIFF)
return TIFFWriteDirectoryTagCheckedIfd8Array(tif, ndir, dir, tag, count,
value);
/*
** For classic tiff we want to verify everything is in range for IFD
** and convert to long format.
*/
p = _TIFFmallocExt(tif, count * sizeof(uint32_t));
if (p == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++)
{
if (*ma > 0xFFFFFFFF)
{
TIFFErrorExtR(tif, module,
"Attempt to write value larger than 0xFFFFFFFF in "
"Classic TIFF file.");
_TIFFfreeExt(tif, p);
return (0);
}
*q = (uint32_t)(*ma);
}
o = TIFFWriteDirectoryTagCheckedIfdArray(tif, ndir, dir, tag, count, p);
_TIFFfreeExt(tif, p);
return (o);
}
/*
* Auxiliary function to determine the IFD data size to be written to the file.
* The IFD data size is finally the size of the IFD tag entries plus the IFD
* data that is written directly after the IFD tag entries.
*/
static void EvaluateIFDdatasizeWrite(TIFF *tif, uint32_t count,
uint32_t typesize, uint32_t *ndir)
{
uint64_t datalength = (uint64_t)count * typesize;
if (datalength > ((tif->tif_flags & TIFF_BIGTIFF) ? 0x8U : 0x4U))
{
/* LibTIFF increments write address to an even offset, thus datalength
* written is also incremented. */
if (datalength & 1)
datalength++;
tif->tif_dir.td_dirdatasize_write += datalength;
}
(*ndir)++;
}
static int TIFFWriteDirectoryTagColormap(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir)
{
static const char module[] = "TIFFWriteDirectoryTagColormap";
uint32_t m;
uint16_t *n;
int o;
m = (1 << tif->tif_dir.td_bitspersample);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, 3 * m, sizeof(uint16_t), ndir);
return 1;
}
n = _TIFFmallocExt(tif, 3 * m * sizeof(uint16_t));
if (n == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
_TIFFmemcpy(&n[0], tif->tif_dir.td_colormap[0], m * sizeof(uint16_t));
_TIFFmemcpy(&n[m], tif->tif_dir.td_colormap[1], m * sizeof(uint16_t));
_TIFFmemcpy(&n[2 * m], tif->tif_dir.td_colormap[2], m * sizeof(uint16_t));
o = TIFFWriteDirectoryTagCheckedShortArray(tif, ndir, dir, TIFFTAG_COLORMAP,
3 * m, n);
_TIFFfreeExt(tif, n);
return (o);
}
static int TIFFWriteDirectoryTagTransferfunction(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir)
{
static const char module[] = "TIFFWriteDirectoryTagTransferfunction";
uint32_t m;
uint16_t n;
uint16_t *o;
int p;
/* TIFFTAG_TRANSFERFUNCTION expects (1 or 3) pointer to arrays with
* (1 << BitsPerSample) * uint16_t values.
*/
m = (1 << tif->tif_dir.td_bitspersample);
/* clang-format off */
n = (tif->tif_dir.td_samplesperpixel - tif->tif_dir.td_extrasamples) > 1 ? 3 : 1;
/* clang-format on */
/* Check for proper number of transferfunctions */
for (int i = 0; i < n; i++)
{
if (tif->tif_dir.td_transferfunction[i] == NULL)
{
TIFFWarningExtR(tif, module,
"Too few TransferFunctions provided. Tag "
"not written to file");
return (1); /* Not an error; only tag is not written. */
}
}
/*
* Check if the table can be written as a single column,
* or if it must be written as 3 columns. Note that we
* write a 3-column tag if there are 2 samples/pixel and
* a single column of data won't suffice--hmm.
*/
if (n == 3)
{
if (!_TIFFmemcmp(tif->tif_dir.td_transferfunction[0],
tif->tif_dir.td_transferfunction[2],
m * sizeof(uint16_t)) &&
!_TIFFmemcmp(tif->tif_dir.td_transferfunction[0],
tif->tif_dir.td_transferfunction[1],
m * sizeof(uint16_t)))
n = 1;
}
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, n * m, 2, ndir);
return 1;
}
o = _TIFFmallocExt(tif, n * m * sizeof(uint16_t));
if (o == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
_TIFFmemcpy(&o[0], tif->tif_dir.td_transferfunction[0],
m * sizeof(uint16_t));
if (n > 1)
_TIFFmemcpy(&o[m], tif->tif_dir.td_transferfunction[1],
m * sizeof(uint16_t));
if (n > 2)
_TIFFmemcpy(&o[2 * m], tif->tif_dir.td_transferfunction[2],
m * sizeof(uint16_t));
p = TIFFWriteDirectoryTagCheckedShortArray(
tif, ndir, dir, TIFFTAG_TRANSFERFUNCTION, n * m, o);
_TIFFfreeExt(tif, o);
return (p);
}
static int TIFFWriteDirectoryTagSubifd(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir)
{
static const char module[] = "TIFFWriteDirectoryTagSubifd";
uint64_t m;
int n;
if (tif->tif_dir.td_nsubifd == 0)
return (1);
m = tif->tif_dataoff;
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
uint32_t *o;
uint64_t *pa;
uint32_t *pb;
uint16_t p;
o = _TIFFmallocExt(tif, tif->tif_dir.td_nsubifd * sizeof(uint32_t));
if (o == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
pa = tif->tif_dir.td_subifd;
pb = o;
for (p = 0; p < tif->tif_dir.td_nsubifd; p++)
{
assert(pa != 0);
/* Could happen if an classicTIFF has a SubIFD of type LONG8 (which
* is illegal) */
if (*pa > 0xFFFFFFFFUL)
{
TIFFErrorExtR(tif, module, "Illegal value for SubIFD tag");
_TIFFfreeExt(tif, o);
return (0);
}
*pb++ = (uint32_t)(*pa++);
}
n = TIFFWriteDirectoryTagCheckedIfdArray(tif, ndir, dir, TIFFTAG_SUBIFD,
tif->tif_dir.td_nsubifd, o);
_TIFFfreeExt(tif, o);
}
else
n = TIFFWriteDirectoryTagCheckedIfd8Array(
tif, ndir, dir, TIFFTAG_SUBIFD, tif->tif_dir.td_nsubifd,
tif->tif_dir.td_subifd);
if (dir == NULL)
/* Just have evaluated IFD data size and incremented ndir
* above in sub-functions. */
return (n);
if (!n)
return (0);
/*
* Total hack: if this directory includes a SubIFD
* tag then force the next <n> directories to be
* written as ``sub directories'' of this one. This
* is used to write things like thumbnails and
* image masks that one wants to keep out of the
* normal directory linkage access mechanism.
*/
tif->tif_flags |= TIFF_INSUBIFD;
tif->tif_nsubifd = tif->tif_dir.td_nsubifd;
if (tif->tif_dir.td_nsubifd == 1)
tif->tif_subifdoff = 0;
else
tif->tif_subifdoff = m;
return (1);
}
static int TIFFWriteDirectoryTagCheckedAscii(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, char *value)
{
assert(sizeof(char) == 1);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 1, ndir);
return 1;
}
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_ASCII, count,
count, value));
}
static int TIFFWriteDirectoryTagCheckedUndefinedArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
uint8_t *value)
{
assert(sizeof(uint8_t) == 1);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 1, ndir);
return 1;
}
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_UNDEFINED,
count, count, value));
}
static int TIFFWriteDirectoryTagCheckedByteArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint8_t *value)
{
assert(sizeof(uint8_t) == 1);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 1, ndir);
return 1;
}
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_BYTE, count,
count, value));
}
static int TIFFWriteDirectoryTagCheckedSbyteArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
int8_t *value)
{
assert(sizeof(int8_t) == 1);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 1, ndir);
return 1;
}
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SBYTE, count,
count, value));
}
static int TIFFWriteDirectoryTagCheckedShort(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint16_t value)
{
uint16_t m;
assert(sizeof(uint16_t) == 2);
if (dir == NULL)
{
/* No additional data to IFD data size just increment ndir. */
(*ndir)++;
return 1;
}
m = value;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&m);
return (
TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SHORT, 1, 2, &m));
}
static int TIFFWriteDirectoryTagCheckedShortArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint16_t *value)
{
assert(count < 0x80000000);
assert(sizeof(uint16_t) == 2);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 2, ndir);
return 1;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfShort(value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SHORT, count,
count * 2, value));
}
static int TIFFWriteDirectoryTagCheckedSshortArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
int16_t *value)
{
assert(count < 0x80000000);
assert(sizeof(int16_t) == 2);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 2, ndir);
return 1;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfShort((uint16_t *)value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SSHORT, count,
count * 2, value));
}
static int TIFFWriteDirectoryTagCheckedLong(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t value)
{
uint32_t m;
assert(sizeof(uint32_t) == 4);
if (dir == NULL)
{
/* No additional data to IFD data size just increment ndir. */
(*ndir)++;
return 1;
}
m = value;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&m);
return (
TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_LONG, 1, 4, &m));
}
static int TIFFWriteDirectoryTagCheckedLongArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint32_t *value)
{
assert(count < 0x40000000);
assert(sizeof(uint32_t) == 4);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 4, ndir);
return 1;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong(value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_LONG, count,
count * 4, value));
}
static int TIFFWriteDirectoryTagCheckedSlongArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
int32_t *value)
{
assert(count < 0x40000000);
assert(sizeof(int32_t) == 4);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 4, ndir);
return 1;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong((uint32_t *)value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SLONG, count,
count * 4, value));
}
static int TIFFWriteDirectoryTagCheckedLong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint64_t *value)
{
assert(count < 0x20000000);
assert(sizeof(uint64_t) == 8);
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
TIFFErrorExtR(tif, "TIFFWriteDirectoryTagCheckedLong8Array",
"LONG8 not allowed for ClassicTIFF");
return (0);
}
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 8, ndir);
return 1;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong8(value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_LONG8, count,
count * 8, value));
}
static int TIFFWriteDirectoryTagCheckedSlong8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
int64_t *value)
{
assert(count < 0x20000000);
assert(sizeof(int64_t) == 8);
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
TIFFErrorExtR(tif, "TIFFWriteDirectoryTagCheckedSlong8Array",
"SLONG8 not allowed for ClassicTIFF");
return (0);
}
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 8, ndir);
return 1;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong8((uint64_t *)value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SLONG8, count,
count * 8, value));
}
static int TIFFWriteDirectoryTagCheckedRational(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
double value)
{
static const char module[] = "TIFFWriteDirectoryTagCheckedRational";
uint32_t m[2];
assert(sizeof(uint32_t) == 4);
if (value < 0)
{
TIFFErrorExtR(tif, module, "Negative value is illegal");
return 0;
}
else if (value != value)
{
TIFFErrorExtR(tif, module, "Not-a-number value is illegal");
return 0;
}
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
tif->tif_dir.td_dirdatasize_write +=
(tif->tif_flags & TIFF_BIGTIFF) ? 0 : 0x8U;
(*ndir)++;
return 1;
}
DoubleToRational(value, &m[0], &m[1]);
if (tif->tif_flags & TIFF_SWAB)
{
TIFFSwabLong(&m[0]);
TIFFSwabLong(&m[1]);
}
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_RATIONAL, 1, 8,
&m[0]));
}
static int TIFFWriteDirectoryTagCheckedRationalArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
float *value)
{
static const char module[] = "TIFFWriteDirectoryTagCheckedRationalArray";
uint32_t *m;
float *na;
uint32_t *nb;
uint32_t nc;
int o;
assert(sizeof(uint32_t) == 4);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count * 2, sizeof(uint32_t), ndir);
return 1;
}
m = _TIFFmallocExt(tif, count * 2 * sizeof(uint32_t));
if (m == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (na = value, nb = m, nc = 0; nc < count; na++, nb += 2, nc++)
{
DoubleToRational(*na, &nb[0], &nb[1]);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong(m, count * 2);
o = TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_RATIONAL, count,
count * 8, &m[0]);
_TIFFfreeExt(tif, m);
return (o);
}
static int TIFFWriteDirectoryTagCheckedSrationalArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag,
uint32_t count,
float *value)
{
static const char module[] = "TIFFWriteDirectoryTagCheckedSrationalArray";
int32_t *m;
float *na;
int32_t *nb;
uint32_t nc;
int o;
assert(sizeof(int32_t) == 4);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count * 2, sizeof(int32_t), ndir);
return 1;
}
m = _TIFFmallocExt(tif, count * 2 * sizeof(int32_t));
if (m == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (na = value, nb = m, nc = 0; nc < count; na++, nb += 2, nc++)
{
DoubleToSrational(*na, &nb[0], &nb[1]);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong((uint32_t *)m, count * 2);
o = TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SRATIONAL, count,
count * 8, &m[0]);
_TIFFfreeExt(tif, m);
return (o);
}
/*-- Rational2Double: additional write functions for double arrays */
static int
TIFFWriteDirectoryTagCheckedRationalDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, double *value)
{
static const char module[] =
"TIFFWriteDirectoryTagCheckedRationalDoubleArray";
uint32_t *m;
double *na;
uint32_t *nb;
uint32_t nc;
int o;
assert(sizeof(uint32_t) == 4);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count * 2, sizeof(uint32_t), ndir);
return 1;
}
m = _TIFFmallocExt(tif, count * 2 * sizeof(uint32_t));
if (m == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (na = value, nb = m, nc = 0; nc < count; na++, nb += 2, nc++)
{
DoubleToRational(*na, &nb[0], &nb[1]);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong(m, count * 2);
o = TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_RATIONAL, count,
count * 8, &m[0]);
_TIFFfreeExt(tif, m);
return (o);
} /*-- TIFFWriteDirectoryTagCheckedRationalDoubleArray() ------- */
static int TIFFWriteDirectoryTagCheckedSrationalDoubleArray(
TIFF *tif, uint32_t *ndir, TIFFDirEntry *dir, uint16_t tag, uint32_t count,
double *value)
{
static const char module[] =
"TIFFWriteDirectoryTagCheckedSrationalDoubleArray";
int32_t *m;
double *na;
int32_t *nb;
uint32_t nc;
int o;
assert(sizeof(int32_t) == 4);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count * 2, sizeof(int32_t), ndir);
return 1;
}
m = _TIFFmallocExt(tif, count * 2 * sizeof(int32_t));
if (m == NULL)
{
TIFFErrorExtR(tif, module, "Out of memory");
return (0);
}
for (na = value, nb = m, nc = 0; nc < count; na++, nb += 2, nc++)
{
DoubleToSrational(*na, &nb[0], &nb[1]);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong((uint32_t *)m, count * 2);
o = TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SRATIONAL, count,
count * 8, &m[0]);
_TIFFfreeExt(tif, m);
return (o);
} /*--- TIFFWriteDirectoryTagCheckedSrationalDoubleArray() -------- */
/** ----- Rational2Double: Double To Rational Conversion
----------------------------------------------------------
* There is a mathematical theorem to convert real numbers into a rational
(integer fraction) number.
* This is called "continuous fraction" which uses the Euclidean algorithm to
find the greatest common divisor (GCD).
* (ref. e.g. https://de.wikipedia.org/wiki/Kettenbruch or
https://en.wikipedia.org/wiki/Continued_fraction
* https://en.wikipedia.org/wiki/Euclidean_algorithm)
* The following functions implement the
* - ToRationalEuclideanGCD() auxiliary function which mainly
implements euclidean GCD
* - DoubleToRational() conversion function for un-signed
rationals
* - DoubleToSrational() conversion function for signed rationals
------------------------------------------------------------------------------------------------------------------*/
/**---- ToRationalEuclideanGCD() -----------------------------------------
* Calculates the rational fractional of a double input value
* using the Euclidean algorithm to find the greatest common divisor (GCD)
------------------------------------------------------------------------*/
static void ToRationalEuclideanGCD(double value, int blnUseSignedRange,
int blnUseSmallRange, uint64_t *ullNum,
uint64_t *ullDenom)
{
/* Internally, the integer variables can be bigger than the external ones,
* as long as the result will fit into the external variable size.
*/
uint64_t numSum[3] = {0, 1, 0}, denomSum[3] = {1, 0, 0};
uint64_t aux, bigNum, bigDenom;
uint64_t returnLimit;
int i;
uint64_t nMax;
double fMax;
unsigned long maxDenom;
/*-- nMax and fMax defines the initial accuracy of the starting fractional,
* or better, the highest used integer numbers used within the starting
* fractional (bigNum/bigDenom). There are two approaches, which can
* accidentally lead to different accuracies just depending on the value.
* Therefore, blnUseSmallRange steers this behavior.
* For long long nMax = ((9223372036854775807-1)/2); for long nMax =
* ((2147483647-1)/2);
*/
if (blnUseSmallRange)
{
nMax = (uint64_t)((2147483647 - 1) / 2); /* for ULONG range */
}
else
{
nMax = ((9223372036854775807 - 1) / 2); /* for ULLONG range */
}
fMax = (double)nMax;
/*-- For the Euclidean GCD define the denominator range, so that it stays
* within size of unsigned long variables. maxDenom should be LONG_MAX for
* negative values and ULONG_MAX for positive ones. Also the final returned
* value of ullNum and ullDenom is limited according to signed- or
* unsigned-range.
*/
if (blnUseSignedRange)
{
maxDenom = 2147483647UL; /*LONG_MAX = 0x7FFFFFFFUL*/
returnLimit = maxDenom;
}
else
{
maxDenom = 0xFFFFFFFFUL; /*ULONG_MAX = 0xFFFFFFFFUL*/
returnLimit = maxDenom;
}
/*-- First generate a rational fraction (bigNum/bigDenom) which represents
*the value as a rational number with the highest accuracy. Therefore,
*uint64_t (uint64_t) is needed. This rational fraction is then reduced
*using the Euclidean algorithm to find the greatest common divisor (GCD).
* bigNum = big numinator of value without fraction (or cut residual
*fraction) bigDenom = big denominator of value
*-- Break-criteria so that uint64_t cast to "bigNum" introduces no error
*and bigDenom has no overflow, and stop with enlargement of fraction when
*the double-value of it reaches an integer number without fractional part.
*/
bigDenom = 1;
while ((value != floor(value)) && (value < fMax) && (bigDenom < nMax))
{
bigDenom <<= 1;
value *= 2;
}
bigNum = (uint64_t)value;
/*-- Start Euclidean algorithm to find the greatest common divisor (GCD) --
*/
#define MAX_ITERATIONS 64
for (i = 0; i < MAX_ITERATIONS; i++)
{
uint64_t val;
/* if bigDenom is not zero, calculate integer part of fraction. */
if (bigDenom == 0)
{
break;
}
val = bigNum / bigDenom;
/* Set bigDenom to reminder of bigNum/bigDenom and bigNum to previous
* denominator bigDenom. */
aux = bigNum;
bigNum = bigDenom;
bigDenom = aux % bigDenom;
/* calculate next denominator and check for its given maximum */
aux = val;
if (denomSum[1] * val + denomSum[0] >= maxDenom)
{
aux = (maxDenom - denomSum[0]) / denomSum[1];
if (aux * 2 >= val || denomSum[1] >= maxDenom)
i = (MAX_ITERATIONS +
1); /* exit but execute rest of for-loop */
else
break;
}
/* calculate next numerator to numSum2 and save previous one to numSum0;
* numSum1 just copy of numSum2. */
numSum[2] = aux * numSum[1] + numSum[0];
numSum[0] = numSum[1];
numSum[1] = numSum[2];
/* calculate next denominator to denomSum2 and save previous one to
* denomSum0; denomSum1 just copy of denomSum2. */
denomSum[2] = aux * denomSum[1] + denomSum[0];
denomSum[0] = denomSum[1];
denomSum[1] = denomSum[2];
}
/*-- Check and adapt for final variable size and return values; reduces
* internal accuracy; denominator is kept in ULONG-range with maxDenom -- */
while (numSum[1] > returnLimit || denomSum[1] > returnLimit)
{
numSum[1] = numSum[1] / 2;
denomSum[1] = denomSum[1] / 2;
}
/* return values */
*ullNum = numSum[1];
*ullDenom = denomSum[1];
} /*-- ToRationalEuclideanGCD() -------------- */
/**---- DoubleToRational() -----------------------------------------------
* Calculates the rational fractional of a double input value
* for UN-SIGNED rationals,
* using the Euclidean algorithm to find the greatest common divisor (GCD)
------------------------------------------------------------------------*/
static void DoubleToRational(double value, uint32_t *num, uint32_t *denom)
{
/*---- UN-SIGNED RATIONAL ---- */
double dblDiff, dblDiff2;
uint64_t ullNum, ullDenom, ullNum2, ullDenom2;
/*-- Check for negative values. If so it is an error. */
/* Test written that way to catch NaN */
if (!(value >= 0))
{
*num = *denom = 0;
TIFFErrorExt(0, "TIFFLib: DoubleToRational()",
" Negative Value for Unsigned Rational given.");
return;
}
/*-- Check for too big numbers (> ULONG_MAX) -- */
if (value > 0xFFFFFFFFUL)
{
*num = 0xFFFFFFFFU;
*denom = 0;
return;
}
/*-- Check for easy integer numbers -- */
if (value == (uint32_t)(value))
{
*num = (uint32_t)value;
*denom = 1;
return;
}
/*-- Check for too small numbers for "unsigned long" type rationals -- */
if (value < 1.0 / (double)0xFFFFFFFFUL)
{
*num = 0;
*denom = 0xFFFFFFFFU;
return;
}
/*-- There are two approaches using the Euclidean algorithm,
* which can accidentally lead to different accuracies just depending on
* the value. Try both and define which one was better.
*/
ToRationalEuclideanGCD(value, FALSE, FALSE, &ullNum, &ullDenom);
ToRationalEuclideanGCD(value, FALSE, TRUE, &ullNum2, &ullDenom2);
/*-- Double-Check, that returned values fit into ULONG :*/
if (ullNum > 0xFFFFFFFFUL || ullDenom > 0xFFFFFFFFUL ||
ullNum2 > 0xFFFFFFFFUL || ullDenom2 > 0xFFFFFFFFUL)
{
TIFFErrorExt(0, "TIFFLib: DoubleToRational()",
" Num or Denom exceeds ULONG: val=%14.6f, num=%12" PRIu64
", denom=%12" PRIu64 " | num2=%12" PRIu64
", denom2=%12" PRIu64 "",
value, ullNum, ullDenom, ullNum2, ullDenom2);
assert(0);
}
/* Check, which one has higher accuracy and take that. */
dblDiff = fabs(value - ((double)ullNum / (double)ullDenom));
dblDiff2 = fabs(value - ((double)ullNum2 / (double)ullDenom2));
if (dblDiff < dblDiff2)
{
*num = (uint32_t)ullNum;
*denom = (uint32_t)ullDenom;
}
else
{
*num = (uint32_t)ullNum2;
*denom = (uint32_t)ullDenom2;
}
} /*-- DoubleToRational() -------------- */
/**---- DoubleToSrational() -----------------------------------------------
* Calculates the rational fractional of a double input value
* for SIGNED rationals,
* using the Euclidean algorithm to find the greatest common divisor (GCD)
------------------------------------------------------------------------*/
static void DoubleToSrational(double value, int32_t *num, int32_t *denom)
{
/*---- SIGNED RATIONAL ----*/
int neg = 1;
double dblDiff, dblDiff2;
uint64_t ullNum, ullDenom, ullNum2, ullDenom2;
/*-- Check for negative values and use then the positive one for internal
* calculations, but take the sign into account before returning. */
if (value < 0)
{
neg = -1;
value = -value;
}
/*-- Check for too big numbers (> LONG_MAX) -- */
if (value > 0x7FFFFFFFL)
{
*num = 0x7FFFFFFFL;
*denom = 0;
return;
}
/*-- Check for easy numbers -- */
if (value == (int32_t)(value))
{
*num = (int32_t)(neg * value);
*denom = 1;
return;
}
/*-- Check for too small numbers for "long" type rationals -- */
if (value < 1.0 / (double)0x7FFFFFFFL)
{
*num = 0;
*denom = 0x7FFFFFFFL;
return;
}
/*-- There are two approaches using the Euclidean algorithm,
* which can accidentally lead to different accuracies just depending on
* the value. Try both and define which one was better. Furthermore, set
* behavior of ToRationalEuclideanGCD() to the range of signed-long.
*/
ToRationalEuclideanGCD(value, TRUE, FALSE, &ullNum, &ullDenom);
ToRationalEuclideanGCD(value, TRUE, TRUE, &ullNum2, &ullDenom2);
/*-- Double-Check, that returned values fit into LONG :*/
if (ullNum > 0x7FFFFFFFL || ullDenom > 0x7FFFFFFFL ||
ullNum2 > 0x7FFFFFFFL || ullDenom2 > 0x7FFFFFFFL)
{
TIFFErrorExt(0, "TIFFLib: DoubleToSrational()",
" Num or Denom exceeds LONG: val=%14.6f, num=%12" PRIu64
", denom=%12" PRIu64 " | num2=%12" PRIu64
", denom2=%12" PRIu64 "",
neg * value, ullNum, ullDenom, ullNum2, ullDenom2);
assert(0);
}
/* Check, which one has higher accuracy and take that. */
dblDiff = fabs(value - ((double)ullNum / (double)ullDenom));
dblDiff2 = fabs(value - ((double)ullNum2 / (double)ullDenom2));
if (dblDiff < dblDiff2)
{
*num = (int32_t)(neg * (long)ullNum);
*denom = (int32_t)ullDenom;
}
else
{
*num = (int32_t)(neg * (long)ullNum2);
*denom = (int32_t)ullDenom2;
}
} /*-- DoubleToSrational() --------------*/
static int TIFFWriteDirectoryTagCheckedFloatArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
float *value)
{
assert(count < 0x40000000);
assert(sizeof(float) == 4);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 4, ndir);
return 1;
}
TIFFCvtNativeToIEEEFloat(tif, count, &value);
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfFloat(value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_FLOAT, count,
count * 4, value));
}
static int TIFFWriteDirectoryTagCheckedDoubleArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
double *value)
{
assert(count < 0x20000000);
assert(sizeof(double) == 8);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 8, ndir);
return 1;
}
TIFFCvtNativeToIEEEDouble(tif, count, &value);
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfDouble(value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_DOUBLE, count,
count * 8, value));
}
static int TIFFWriteDirectoryTagCheckedIfdArray(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint32_t count, uint32_t *value)
{
assert(count < 0x40000000);
assert(sizeof(uint32_t) == 4);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 4, ndir);
return 1;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong(value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_IFD, count,
count * 4, value));
}
static int TIFFWriteDirectoryTagCheckedIfd8Array(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir,
uint16_t tag, uint32_t count,
uint64_t *value)
{
assert(count < 0x20000000);
assert(sizeof(uint64_t) == 8);
assert(tif->tif_flags & TIFF_BIGTIFF);
if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */
{
EvaluateIFDdatasizeWrite(tif, count, 8, ndir);
return 1;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong8(value, count);
return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_IFD8, count,
count * 8, value));
}
static int TIFFWriteDirectoryTagData(TIFF *tif, uint32_t *ndir,
TIFFDirEntry *dir, uint16_t tag,
uint16_t datatype, uint32_t count,
uint32_t datalength, void *data)
{
static const char module[] = "TIFFWriteDirectoryTagData";
uint32_t m;
m = 0;
while (m < (*ndir))
{
assert(dir[m].tdir_tag != tag);
if (dir[m].tdir_tag > tag)
break;
m++;
}
if (m < (*ndir))
{
uint32_t n;
for (n = *ndir; n > m; n--)
dir[n] = dir[n - 1];
}
dir[m].tdir_tag = tag;
dir[m].tdir_type = datatype;
dir[m].tdir_count = count;
dir[m].tdir_offset.toff_long8 = 0;
if (datalength <= ((tif->tif_flags & TIFF_BIGTIFF) ? 0x8U : 0x4U))
{
if (data && datalength)
{
_TIFFmemcpy(&dir[m].tdir_offset, data, datalength);
}
}
else
{
uint64_t na, nb;
na = tif->tif_dataoff;
nb = na + datalength;
if (!(tif->tif_flags & TIFF_BIGTIFF))
nb = (uint32_t)nb;
if ((nb < na) || (nb < datalength))
{
TIFFErrorExtR(tif, module, "Maximum TIFF file size exceeded");
return (0);
}
if (!SeekOK(tif, na))
{
TIFFErrorExtR(tif, module, "IO error writing tag data");
return (0);
}
if (datalength >= 0x80000000UL)
{
TIFFErrorExtR(tif, module,
"libtiff does not allow writing more than 2147483647 "
"bytes in a tag");
return (0);
}
if (!WriteOK(tif, data, (tmsize_t)datalength))
{
TIFFErrorExtR(tif, module, "IO error writing tag data");
return (0);
}
tif->tif_dataoff = nb;
if (tif->tif_dataoff & 1)
tif->tif_dataoff++;
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
uint32_t o;
o = (uint32_t)na;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&o);
_TIFFmemcpy(&dir[m].tdir_offset, &o, 4);
}
else
{
dir[m].tdir_offset.toff_long8 = na;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&dir[m].tdir_offset.toff_long8);
}
}
(*ndir)++;
return (1);
}
/*
* Link the current directory into the directory chain for the file.
*/
static int TIFFLinkDirectory(TIFF *tif)
{
static const char module[] = "TIFFLinkDirectory";
tif->tif_diroff = (TIFFSeekFile(tif, 0, SEEK_END) + 1) & (~((toff_t)1));
/*
* Handle SubIFDs
*/
if (tif->tif_flags & TIFF_INSUBIFD)
{
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
uint32_t m;
m = (uint32_t)tif->tif_diroff;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&m);
(void)TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
if (!WriteOK(tif, &m, 4))
{
TIFFErrorExtR(tif, module,
"Error writing SubIFD directory link");
return (0);
}
/*
* Advance to the next SubIFD or, if this is
* the last one configured, reverting back to the
* normal directory linkage is done in TIFFWriteDirectorySec()
* by tif->tif_flags &= ~TIFF_INSUBIFD;.
*/
if (--tif->tif_nsubifd)
tif->tif_subifdoff += 4;
return (1);
}
else
{
uint64_t m;
m = tif->tif_diroff;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&m);
(void)TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
if (!WriteOK(tif, &m, 8))
{
TIFFErrorExtR(tif, module,
"Error writing SubIFD directory link");
return (0);
}
/*
* Advance to the next SubIFD or, if this is
* the last one configured, reverting back to the
* normal directory linkage is done in TIFFWriteDirectorySec()
* by tif->tif_flags &= ~TIFF_INSUBIFD;.
*/
if (--tif->tif_nsubifd)
tif->tif_subifdoff += 8;
return (1);
}
}
/*
* Handle main-IFDs
*/
tdir_t ndir = 1; /* count current number of main-IFDs */
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
uint32_t m;
uint32_t nextdir;
m = (uint32_t)(tif->tif_diroff);
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&m);
if (tif->tif_header.classic.tiff_diroff == 0)
{
/*
* First directory, overwrite offset in header.
*/
tif->tif_header.classic.tiff_diroff = (uint32_t)tif->tif_diroff;
tif->tif_lastdiroff = tif->tif_diroff;
(void)TIFFSeekFile(tif, 4, SEEK_SET);
if (!WriteOK(tif, &m, 4))
{
TIFFErrorExtR(tif, tif->tif_name, "Error writing TIFF header");
return (0);
}
if (!tif->tif_dir.td_iswrittentofile)
tif->tif_curdircount = 0;
return (1);
}
/*
* Not the first directory, search to the last and append.
*/
tdir_t dirn = 0;
if (tif->tif_lastdiroff != 0 &&
_TIFFGetDirNumberFromOffset(tif, tif->tif_lastdiroff, &dirn))
{
/* Start searching from the lastely written IFD. Thus get its IFD
* number. */
nextdir = (uint32_t)tif->tif_lastdiroff;
ndir = dirn + 1;
}
else
{
nextdir = tif->tif_header.classic.tiff_diroff;
ndir = 1; /* start searching from the first IFD */
}
while (1)
{
uint16_t dircount;
uint32_t nextnextdir;
if (!SeekOK(tif, nextdir) || !ReadOK(tif, &dircount, 2))
{
TIFFErrorExtR(tif, module, "Error fetching directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
(void)TIFFSeekFile(tif, nextdir + 2 + dircount * 12, SEEK_SET);
if (!ReadOK(tif, &nextnextdir, 4))
{
TIFFErrorExtR(tif, module, "Error fetching directory link");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&nextnextdir);
if (nextnextdir == 0)
{
(void)TIFFSeekFile(tif, nextdir + 2 + dircount * 12, SEEK_SET);
if (!WriteOK(tif, &m, 4))
{
TIFFErrorExtR(tif, module, "Error writing directory link");
return (0);
}
tif->tif_lastdiroff = tif->tif_diroff;
break;
}
nextdir = nextnextdir;
ndir++;
}
}
else
{
/*- BigTIFF -*/
uint64_t m;
uint64_t nextdir;
m = tif->tif_diroff;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&m);
if (tif->tif_header.big.tiff_diroff == 0)
{
/*
* First directory, overwrite offset in header.
*/
tif->tif_header.big.tiff_diroff = tif->tif_diroff;
tif->tif_lastdiroff = tif->tif_diroff;
(void)TIFFSeekFile(tif, 8, SEEK_SET);
if (!WriteOK(tif, &m, 8))
{
TIFFErrorExtR(tif, tif->tif_name, "Error writing TIFF header");
return (0);
}
if (!tif->tif_dir.td_iswrittentofile)
tif->tif_curdircount = 0;
return (1);
}
/*
* Not the first directory, search to the last and append.
*/
tdir_t dirn = 0;
if (tif->tif_lastdiroff != 0 &&
_TIFFGetDirNumberFromOffset(tif, tif->tif_lastdiroff, &dirn))
{
/* Start searching from the lastely written IFD. Thus get its IFD
* number. */
nextdir = tif->tif_lastdiroff;
ndir = dirn + 1;
}
else
{
nextdir = tif->tif_header.big.tiff_diroff;
ndir = 1; /* start searching from the first IFD */
}
while (1)
{
uint64_t dircount64;
uint16_t dircount;
uint64_t nextnextdir;
if (!SeekOK(tif, nextdir) || !ReadOK(tif, &dircount64, 8))
{
TIFFErrorExtR(tif, module, "Error fetching directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&dircount64);
if (dircount64 > 0xFFFF)
{
TIFFErrorExtR(tif, module,
"Sanity check on tag count failed, "
"likely corrupt TIFF");
return (0);
}
dircount = (uint16_t)dircount64;
(void)TIFFSeekFile(tif, nextdir + 8 + dircount * 20, SEEK_SET);
if (!ReadOK(tif, &nextnextdir, 8))
{
TIFFErrorExtR(tif, module, "Error fetching directory link");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&nextnextdir);
if (nextnextdir == 0)
{
(void)TIFFSeekFile(tif, nextdir + 8 + dircount * 20, SEEK_SET);
if (!WriteOK(tif, &m, 8))
{
TIFFErrorExtR(tif, module, "Error writing directory link");
return (0);
}
tif->tif_lastdiroff = tif->tif_diroff;
break;
}
nextdir = nextnextdir;
ndir++;
}
}
/* Offset of next IFD is written to file.
* Update number of main-IFDs in file.
* However, tif_curdircount shall count only newly written main-IFDs with
* entries and not only number of linked offsets! Thus, tif_curdircount is
* incremented at the end of TIFFWriteDirectorySec().
* TIFF_NON_EXISTENT_DIR_NUMBER means 'dont know number of IFDs'
* 0 means 'empty file opened for writing, but no IFD written yet' */
if (!tif->tif_dir.td_iswrittentofile && !(tif->tif_flags & TIFF_INSUBIFD))
{
tif->tif_curdircount = ndir;
}
return (1);
}
/************************************************************************/
/* TIFFRewriteField() */
/* */
/* Rewrite a field in the directory on disk without regard to */
/* updating the TIFF directory structure in memory. Currently */
/* only supported for field that already exist in the on-disk */
/* directory. Mainly used for updating stripoffset / */
/* stripbytecount values after the directory is already on */
/* disk. */
/* */
/* Returns zero on failure, and one on success. */
/************************************************************************/
int _TIFFRewriteField(TIFF *tif, uint16_t tag, TIFFDataType in_datatype,
tmsize_t count, void *data)
{
static const char module[] = "TIFFResetField";
/* const TIFFField* fip = NULL; */
uint16_t dircount;
tmsize_t dirsize;
uint8_t direntry_raw[20];
uint16_t entry_tag = 0;
uint16_t entry_type = 0;
uint64_t entry_count = 0;
uint64_t entry_offset = 0;
int value_in_entry = 0;
uint64_t read_offset;
uint8_t *buf_to_write = NULL;
TIFFDataType datatype;
/* -------------------------------------------------------------------- */
/* Find field definition. */
/* -------------------------------------------------------------------- */
/*fip =*/TIFFFindField(tif, tag, TIFF_ANY);
/* -------------------------------------------------------------------- */
/* Do some checking this is a straight forward case. */
/* -------------------------------------------------------------------- */
if (isMapped(tif))
{
TIFFErrorExtR(tif, module,
"Memory mapped files not currently supported for "
"this operation.");
return 0;
}
if (tif->tif_diroff == 0)
{
TIFFErrorExtR(
tif, module,
"Attempt to reset field on directory not already on disk.");
return 0;
}
/* -------------------------------------------------------------------- */
/* Read the directory entry count. */
/* -------------------------------------------------------------------- */
if (!SeekOK(tif, tif->tif_diroff))
{
TIFFErrorExtR(tif, module, "%s: Seek error accessing TIFF directory",
tif->tif_name);
return 0;
}
read_offset = tif->tif_diroff;
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
if (!ReadOK(tif, &dircount, sizeof(uint16_t)))
{
TIFFErrorExtR(tif, module, "%s: Can not read TIFF directory count",
tif->tif_name);
return 0;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
dirsize = 12;
read_offset += 2;
}
else
{
uint64_t dircount64;
if (!ReadOK(tif, &dircount64, sizeof(uint64_t)))
{
TIFFErrorExtR(tif, module, "%s: Can not read TIFF directory count",
tif->tif_name);
return 0;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&dircount64);
dircount = (uint16_t)dircount64;
dirsize = 20;
read_offset += 8;
}
/* -------------------------------------------------------------------- */
/* Read through directory to find target tag. */
/* -------------------------------------------------------------------- */
while (dircount > 0)
{
if (!ReadOK(tif, direntry_raw, dirsize))
{
TIFFErrorExtR(tif, module, "%s: Can not read TIFF directory entry.",
tif->tif_name);
return 0;
}
memcpy(&entry_tag, direntry_raw + 0, sizeof(uint16_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&entry_tag);
if (entry_tag == tag)
break;
read_offset += dirsize;
}
if (entry_tag != tag)
{
TIFFErrorExtR(tif, module, "%s: Could not find tag %" PRIu16 ".",
tif->tif_name, tag);
return 0;
}
/* -------------------------------------------------------------------- */
/* Extract the type, count and offset for this entry. */
/* -------------------------------------------------------------------- */
memcpy(&entry_type, direntry_raw + 2, sizeof(uint16_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&entry_type);
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
uint32_t value;
memcpy(&value, direntry_raw + 4, sizeof(uint32_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&value);
entry_count = value;
memcpy(&value, direntry_raw + 8, sizeof(uint32_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&value);
entry_offset = value;
}
else
{
memcpy(&entry_count, direntry_raw + 4, sizeof(uint64_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&entry_count);
memcpy(&entry_offset, direntry_raw + 12, sizeof(uint64_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&entry_offset);
}
/* -------------------------------------------------------------------- */
/* When a dummy tag was written due to TIFFDeferStrileArrayWriting() */
/* -------------------------------------------------------------------- */
if (entry_offset == 0 && entry_count == 0 && entry_type == 0)
{
if (tag == TIFFTAG_TILEOFFSETS || tag == TIFFTAG_STRIPOFFSETS)
{
entry_type =
(tif->tif_flags & TIFF_BIGTIFF) ? TIFF_LONG8 : TIFF_LONG;
}
else
{
int write_aslong8 = 1;
if (count > 1 && tag == TIFFTAG_STRIPBYTECOUNTS)
{
write_aslong8 = WriteAsLong8(tif, TIFFStripSize64(tif));
}
else if (count > 1 && tag == TIFFTAG_TILEBYTECOUNTS)
{
write_aslong8 = WriteAsLong8(tif, TIFFTileSize64(tif));
}
if (write_aslong8)
{
entry_type = TIFF_LONG8;
}
else
{
int write_aslong4 = 1;
if (count > 1 && tag == TIFFTAG_STRIPBYTECOUNTS)
{
write_aslong4 = WriteAsLong4(tif, TIFFStripSize64(tif));
}
else if (count > 1 && tag == TIFFTAG_TILEBYTECOUNTS)
{
write_aslong4 = WriteAsLong4(tif, TIFFTileSize64(tif));
}
if (write_aslong4)
{
entry_type = TIFF_LONG;
}
else
{
entry_type = TIFF_SHORT;
}
}
}
}
/* -------------------------------------------------------------------- */
/* What data type do we want to write this as? */
/* -------------------------------------------------------------------- */
if (TIFFDataWidth(in_datatype) == 8 && !(tif->tif_flags & TIFF_BIGTIFF))
{
if (in_datatype == TIFF_LONG8)
datatype = entry_type == TIFF_SHORT ? TIFF_SHORT : TIFF_LONG;
else if (in_datatype == TIFF_SLONG8)
datatype = TIFF_SLONG;
else if (in_datatype == TIFF_IFD8)
datatype = TIFF_IFD;
else
datatype = in_datatype;
}
else
{
if (in_datatype == TIFF_LONG8 &&
(entry_type == TIFF_SHORT || entry_type == TIFF_LONG ||
entry_type == TIFF_LONG8))
datatype = entry_type;
else if (in_datatype == TIFF_SLONG8 &&
(entry_type == TIFF_SLONG || entry_type == TIFF_SLONG8))
datatype = entry_type;
else if (in_datatype == TIFF_IFD8 &&
(entry_type == TIFF_IFD || entry_type == TIFF_IFD8))
datatype = entry_type;
else
datatype = in_datatype;
}
/* -------------------------------------------------------------------- */
/* Prepare buffer of actual data to write. This includes */
/* swabbing as needed. */
/* -------------------------------------------------------------------- */
buf_to_write = (uint8_t *)_TIFFCheckMalloc(
tif, count, TIFFDataWidth(datatype), "for field buffer.");
if (!buf_to_write)
return 0;
if (datatype == in_datatype)
memcpy(buf_to_write, data, count * TIFFDataWidth(datatype));
else if (datatype == TIFF_SLONG && in_datatype == TIFF_SLONG8)
{
tmsize_t i;
for (i = 0; i < count; i++)
{
((int32_t *)buf_to_write)[i] = (int32_t)((int64_t *)data)[i];
if ((int64_t)((int32_t *)buf_to_write)[i] != ((int64_t *)data)[i])
{
_TIFFfreeExt(tif, buf_to_write);
TIFFErrorExtR(tif, module,
"Value exceeds 32bit range of output type.");
return 0;
}
}
}
else if ((datatype == TIFF_LONG && in_datatype == TIFF_LONG8) ||
(datatype == TIFF_IFD && in_datatype == TIFF_IFD8))
{
tmsize_t i;
for (i = 0; i < count; i++)
{
((uint32_t *)buf_to_write)[i] = (uint32_t)((uint64_t *)data)[i];
if ((uint64_t)((uint32_t *)buf_to_write)[i] !=
((uint64_t *)data)[i])
{
_TIFFfreeExt(tif, buf_to_write);
TIFFErrorExtR(tif, module,
"Value exceeds 32bit range of output type.");
return 0;
}
}
}
else if (datatype == TIFF_SHORT && in_datatype == TIFF_LONG8)
{
tmsize_t i;
for (i = 0; i < count; i++)
{
((uint16_t *)buf_to_write)[i] = (uint16_t)((uint64_t *)data)[i];
if ((uint64_t)((uint16_t *)buf_to_write)[i] !=
((uint64_t *)data)[i])
{
_TIFFfreeExt(tif, buf_to_write);
TIFFErrorExtR(tif, module,
"Value exceeds 16bit range of output type.");
return 0;
}
}
}
else
{
TIFFErrorExtR(tif, module, "Unhandled type conversion.");
return 0;
}
if (TIFFDataWidth(datatype) > 1 && (tif->tif_flags & TIFF_SWAB))
{
if (TIFFDataWidth(datatype) == 2)
TIFFSwabArrayOfShort((uint16_t *)buf_to_write, count);
else if (TIFFDataWidth(datatype) == 4)
TIFFSwabArrayOfLong((uint32_t *)buf_to_write, count);
else if (TIFFDataWidth(datatype) == 8)
TIFFSwabArrayOfLong8((uint64_t *)buf_to_write, count);
}
/* -------------------------------------------------------------------- */
/* Is this a value that fits into the directory entry? */
/* -------------------------------------------------------------------- */
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
if (TIFFDataWidth(datatype) * count <= 4)
{
entry_offset = read_offset + 8;
value_in_entry = 1;
}
}
else
{
if (TIFFDataWidth(datatype) * count <= 8)
{
entry_offset = read_offset + 12;
value_in_entry = 1;
}
}
if ((tag == TIFFTAG_TILEOFFSETS || tag == TIFFTAG_STRIPOFFSETS) &&
tif->tif_dir.td_stripoffset_entry.tdir_count == 0 &&
tif->tif_dir.td_stripoffset_entry.tdir_type == 0 &&
tif->tif_dir.td_stripoffset_entry.tdir_offset.toff_long8 == 0)
{
tif->tif_dir.td_stripoffset_entry.tdir_type = datatype;
tif->tif_dir.td_stripoffset_entry.tdir_count = count;
}
else if ((tag == TIFFTAG_TILEBYTECOUNTS ||
tag == TIFFTAG_STRIPBYTECOUNTS) &&
tif->tif_dir.td_stripbytecount_entry.tdir_count == 0 &&
tif->tif_dir.td_stripbytecount_entry.tdir_type == 0 &&
tif->tif_dir.td_stripbytecount_entry.tdir_offset.toff_long8 == 0)
{
tif->tif_dir.td_stripbytecount_entry.tdir_type = datatype;
tif->tif_dir.td_stripbytecount_entry.tdir_count = count;
}
/* -------------------------------------------------------------------- */
/* If the tag type, and count match, then we just write it out */
/* over the old values without altering the directory entry at */
/* all. */
/* -------------------------------------------------------------------- */
if (entry_count == (uint64_t)count && entry_type == (uint16_t)datatype)
{
if (!SeekOK(tif, entry_offset))
{
_TIFFfreeExt(tif, buf_to_write);
TIFFErrorExtR(tif, module,
"%s: Seek error accessing TIFF directory",
tif->tif_name);
return 0;
}
if (!WriteOK(tif, buf_to_write, count * TIFFDataWidth(datatype)))
{
_TIFFfreeExt(tif, buf_to_write);
TIFFErrorExtR(tif, module, "Error writing directory link");
return (0);
}
_TIFFfreeExt(tif, buf_to_write);
return 1;
}
/* -------------------------------------------------------------------- */
/* Otherwise, we write the new tag data at the end of the file. */
/* -------------------------------------------------------------------- */
if (!value_in_entry)
{
entry_offset = TIFFSeekFile(tif, 0, SEEK_END);
if (!WriteOK(tif, buf_to_write, count * TIFFDataWidth(datatype)))
{
_TIFFfreeExt(tif, buf_to_write);
TIFFErrorExtR(tif, module, "Error writing directory link");
return (0);
}
}
else
{
if (count * TIFFDataWidth(datatype) == 4)
{
uint32_t value;
memcpy(&value, buf_to_write, count * TIFFDataWidth(datatype));
entry_offset = value;
}
else
{
memcpy(&entry_offset, buf_to_write,
count * TIFFDataWidth(datatype));
}
}
_TIFFfreeExt(tif, buf_to_write);
buf_to_write = 0;
/* -------------------------------------------------------------------- */
/* Adjust the directory entry. */
/* -------------------------------------------------------------------- */
entry_type = datatype;
entry_count = (uint64_t)count;
memcpy(direntry_raw + 2, &entry_type, sizeof(uint16_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort((uint16_t *)(direntry_raw + 2));
if (!(tif->tif_flags & TIFF_BIGTIFF))
{
uint32_t value;
value = (uint32_t)entry_count;
memcpy(direntry_raw + 4, &value, sizeof(uint32_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong((uint32_t *)(direntry_raw + 4));
value = (uint32_t)entry_offset;
memcpy(direntry_raw + 8, &value, sizeof(uint32_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong((uint32_t *)(direntry_raw + 8));
}
else
{
memcpy(direntry_raw + 4, &entry_count, sizeof(uint64_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8((uint64_t *)(direntry_raw + 4));
memcpy(direntry_raw + 12, &entry_offset, sizeof(uint64_t));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8((uint64_t *)(direntry_raw + 12));
}
/* -------------------------------------------------------------------- */
/* Write the directory entry out to disk. */
/* -------------------------------------------------------------------- */
if (!SeekOK(tif, read_offset))
{
TIFFErrorExtR(tif, module, "%s: Seek error accessing TIFF directory",
tif->tif_name);
return 0;
}
if (!WriteOK(tif, direntry_raw, dirsize))
{
TIFFErrorExtR(tif, module, "%s: Can not write TIFF directory entry.",
tif->tif_name);
return 0;
}
return 1;
}