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opencv/3rdparty/libtiff/tif_dir.c

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/* $Id: tif_dir.c,v 1.1 2005-06-17 13:54:52 vp153 Exp $ */
/*
* 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 Tag Get & Set Routines.
* (and also some miscellaneous stuff)
*/
#include "tiffiop.h"
/*
* These are used in the backwards compatibility code...
*/
#define DATATYPE_VOID 0 /* !untyped data */
#define DATATYPE_INT 1 /* !signed integer data */
#define DATATYPE_UINT 2 /* !unsigned integer data */
#define DATATYPE_IEEEFP 3 /* !IEEE floating point data */
static void
setByteArray(void** vpp, void* vp, size_t nmemb, size_t elem_size)
{
if (*vpp)
_TIFFfree(*vpp), *vpp = 0;
if (vp) {
tsize_t bytes = nmemb * elem_size;
if (elem_size && bytes / elem_size == nmemb)
*vpp = (void*) _TIFFmalloc(bytes);
if (*vpp)
_TIFFmemcpy(*vpp, vp, bytes);
}
}
void _TIFFsetByteArray(void** vpp, void* vp, long n)
{ setByteArray(vpp, vp, n, 1); }
void _TIFFsetString(char** cpp, char* cp)
{ setByteArray((void**) cpp, (void*) cp, strlen(cp)+1, 1); }
void _TIFFsetNString(char** cpp, char* cp, long n)
{ setByteArray((void**) cpp, (void*) cp, n, 1); }
void _TIFFsetShortArray(uint16** wpp, uint16* wp, long n)
{ setByteArray((void**) wpp, (void*) wp, n, sizeof (uint16)); }
void _TIFFsetLongArray(uint32** lpp, uint32* lp, long n)
{ setByteArray((void**) lpp, (void*) lp, n, sizeof (uint32)); }
void _TIFFsetFloatArray(float** fpp, float* fp, long n)
{ setByteArray((void**) fpp, (void*) fp, n, sizeof (float)); }
void _TIFFsetDoubleArray(double** dpp, double* dp, long n)
{ setByteArray((void**) dpp, (void*) dp, n, sizeof (double)); }
/*
* Install extra samples information.
*/
static int
setExtraSamples(TIFFDirectory* td, va_list ap, int* v)
{
uint16* va;
int i;
*v = va_arg(ap, int);
if ((uint16) *v > td->td_samplesperpixel)
return (0);
va = va_arg(ap, uint16*);
if (*v > 0 && va == NULL) /* typically missing param */
return (0);
for (i = 0; i < *v; i++)
if (va[i] > EXTRASAMPLE_UNASSALPHA)
return (0);
td->td_extrasamples = (uint16) *v;
_TIFFsetShortArray(&td->td_sampleinfo, va, td->td_extrasamples);
return (1);
}
static int
checkInkNamesString(TIFF* tif, int slen, const char* s)
{
TIFFDirectory* td = &tif->tif_dir;
int i = td->td_samplesperpixel;
if (slen > 0) {
const char* ep = s+slen;
const char* cp = s;
for (; i > 0; i--) {
for (; *cp != '\0'; cp++)
if (cp >= ep)
goto bad;
cp++; /* skip \0 */
}
return (cp-s);
}
bad:
TIFFError("TIFFSetField",
"%s: Invalid InkNames value; expecting %d names, found %d",
tif->tif_name,
td->td_samplesperpixel,
td->td_samplesperpixel-i);
return (0);
}
static int
_TIFFVSetField(TIFF* tif, ttag_t tag, va_list ap)
{
static const char module[] = "_TIFFVSetField";
TIFFDirectory* td = &tif->tif_dir;
int status = 1;
uint32 v32;
int i, v;
double d;
char* s;
switch (tag) {
case TIFFTAG_SUBFILETYPE:
td->td_subfiletype = va_arg(ap, uint32);
break;
case TIFFTAG_IMAGEWIDTH:
td->td_imagewidth = va_arg(ap, uint32);
break;
case TIFFTAG_IMAGELENGTH:
td->td_imagelength = va_arg(ap, uint32);
break;
case TIFFTAG_BITSPERSAMPLE:
td->td_bitspersample = (uint16) va_arg(ap, int);
/*
* If the data require post-decoding processing
* to byte-swap samples, set it up here. Note
* that since tags are required to be ordered,
* compression code can override this behaviour
* in the setup method if it wants to roll the
* post decoding work in with its normal work.
*/
if (tif->tif_flags & TIFF_SWAB) {
if (td->td_bitspersample == 16)
tif->tif_postdecode = _TIFFSwab16BitData;
else if (td->td_bitspersample == 32)
tif->tif_postdecode = _TIFFSwab32BitData;
else if (td->td_bitspersample == 64)
tif->tif_postdecode = _TIFFSwab64BitData;
}
break;
case TIFFTAG_COMPRESSION:
v = va_arg(ap, int) & 0xffff;
/*
* If we're changing the compression scheme,
* the notify the previous module so that it
* can cleanup any state it's setup.
*/
if (TIFFFieldSet(tif, FIELD_COMPRESSION)) {
if (td->td_compression == v)
break;
(*tif->tif_cleanup)(tif);
tif->tif_flags &= ~TIFF_CODERSETUP;
}
/*
* Setup new compression routine state.
*/
if( (status = TIFFSetCompressionScheme(tif, v)) != 0 )
td->td_compression = (uint16) v;
else
status = 0;
break;
case TIFFTAG_PHOTOMETRIC:
td->td_photometric = (uint16) va_arg(ap, int);
break;
case TIFFTAG_THRESHHOLDING:
td->td_threshholding = (uint16) va_arg(ap, int);
break;
case TIFFTAG_FILLORDER:
v = va_arg(ap, int);
if (v != FILLORDER_LSB2MSB && v != FILLORDER_MSB2LSB)
goto badvalue;
td->td_fillorder = (uint16) v;
break;
case TIFFTAG_DOCUMENTNAME:
_TIFFsetString(&td->td_documentname, va_arg(ap, char*));
break;
case TIFFTAG_ARTIST:
_TIFFsetString(&td->td_artist, va_arg(ap, char*));
break;
case TIFFTAG_DATETIME:
_TIFFsetString(&td->td_datetime, va_arg(ap, char*));
break;
case TIFFTAG_HOSTCOMPUTER:
_TIFFsetString(&td->td_hostcomputer, va_arg(ap, char*));
break;
case TIFFTAG_IMAGEDESCRIPTION:
_TIFFsetString(&td->td_imagedescription, va_arg(ap, char*));
break;
case TIFFTAG_MAKE:
_TIFFsetString(&td->td_make, va_arg(ap, char*));
break;
case TIFFTAG_MODEL:
_TIFFsetString(&td->td_model, va_arg(ap, char*));
break;
case TIFFTAG_COPYRIGHT:
_TIFFsetString(&td->td_copyright, va_arg(ap, char*));
break;
case TIFFTAG_ORIENTATION:
v = va_arg(ap, int);
if (v < ORIENTATION_TOPLEFT || ORIENTATION_LEFTBOT < v) {
TIFFWarning(tif->tif_name,
"Bad value %ld for \"%s\" tag ignored",
v, _TIFFFieldWithTag(tif, tag)->field_name);
} else
td->td_orientation = (uint16) v;
break;
case TIFFTAG_SAMPLESPERPIXEL:
/* XXX should cross check -- e.g. if pallette, then 1 */
v = va_arg(ap, int);
if (v == 0)
goto badvalue;
td->td_samplesperpixel = (uint16) v;
break;
case TIFFTAG_ROWSPERSTRIP:
v32 = va_arg(ap, uint32);
if (v32 == 0)
goto badvalue32;
td->td_rowsperstrip = v32;
if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
td->td_tilelength = v32;
td->td_tilewidth = td->td_imagewidth;
}
break;
case TIFFTAG_MINSAMPLEVALUE:
td->td_minsamplevalue = (uint16) va_arg(ap, int);
break;
case TIFFTAG_MAXSAMPLEVALUE:
td->td_maxsamplevalue = (uint16) va_arg(ap, int);
break;
case TIFFTAG_SMINSAMPLEVALUE:
td->td_sminsamplevalue = (double) va_arg(ap, dblparam_t);
break;
case TIFFTAG_SMAXSAMPLEVALUE:
td->td_smaxsamplevalue = (double) va_arg(ap, dblparam_t);
break;
case TIFFTAG_XRESOLUTION:
td->td_xresolution = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_YRESOLUTION:
td->td_yresolution = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_PLANARCONFIG:
v = va_arg(ap, int);
if (v != PLANARCONFIG_CONTIG && v != PLANARCONFIG_SEPARATE)
goto badvalue;
td->td_planarconfig = (uint16) v;
break;
case TIFFTAG_PAGENAME:
_TIFFsetString(&td->td_pagename, va_arg(ap, char*));
break;
case TIFFTAG_XPOSITION:
td->td_xposition = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_YPOSITION:
td->td_yposition = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_RESOLUTIONUNIT:
v = va_arg(ap, int);
if (v < RESUNIT_NONE || RESUNIT_CENTIMETER < v)
goto badvalue;
td->td_resolutionunit = (uint16) v;
break;
case TIFFTAG_PAGENUMBER:
td->td_pagenumber[0] = (uint16) va_arg(ap, int);
td->td_pagenumber[1] = (uint16) va_arg(ap, int);
break;
case TIFFTAG_HALFTONEHINTS:
td->td_halftonehints[0] = (uint16) va_arg(ap, int);
td->td_halftonehints[1] = (uint16) va_arg(ap, int);
break;
case TIFFTAG_COLORMAP:
v32 = (uint32)(1L<<td->td_bitspersample);
_TIFFsetShortArray(&td->td_colormap[0], va_arg(ap, uint16*), v32);
_TIFFsetShortArray(&td->td_colormap[1], va_arg(ap, uint16*), v32);
_TIFFsetShortArray(&td->td_colormap[2], va_arg(ap, uint16*), v32);
break;
case TIFFTAG_EXTRASAMPLES:
if (!setExtraSamples(td, ap, &v))
goto badvalue;
break;
case TIFFTAG_MATTEING:
td->td_extrasamples = (uint16) (va_arg(ap, int) != 0);
if (td->td_extrasamples) {
uint16 sv = EXTRASAMPLE_ASSOCALPHA;
_TIFFsetShortArray(&td->td_sampleinfo, &sv, 1);
}
break;
case TIFFTAG_TILEWIDTH:
v32 = va_arg(ap, uint32);
if (v32 % 16) {
if (tif->tif_mode != O_RDONLY)
goto badvalue32;
TIFFWarning(tif->tif_name,
"Nonstandard tile width %d, convert file", v32);
}
td->td_tilewidth = v32;
tif->tif_flags |= TIFF_ISTILED;
break;
case TIFFTAG_TILELENGTH:
v32 = va_arg(ap, uint32);
if (v32 % 16) {
if (tif->tif_mode != O_RDONLY)
goto badvalue32;
TIFFWarning(tif->tif_name,
"Nonstandard tile length %d, convert file", v32);
}
td->td_tilelength = v32;
tif->tif_flags |= TIFF_ISTILED;
break;
case TIFFTAG_TILEDEPTH:
v32 = va_arg(ap, uint32);
if (v32 == 0)
goto badvalue32;
td->td_tiledepth = v32;
break;
case TIFFTAG_DATATYPE:
v = va_arg(ap, int);
switch (v) {
case DATATYPE_VOID: v = SAMPLEFORMAT_VOID; break;
case DATATYPE_INT: v = SAMPLEFORMAT_INT; break;
case DATATYPE_UINT: v = SAMPLEFORMAT_UINT; break;
case DATATYPE_IEEEFP: v = SAMPLEFORMAT_IEEEFP;break;
default: goto badvalue;
}
td->td_sampleformat = (uint16) v;
break;
case TIFFTAG_SAMPLEFORMAT:
v = va_arg(ap, int);
if (v < SAMPLEFORMAT_UINT || SAMPLEFORMAT_COMPLEXIEEEFP < v)
goto badvalue;
td->td_sampleformat = (uint16) v;
/* Try to fix up the SWAB function for complex data. */
if( td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT
&& td->td_bitspersample == 32
&& tif->tif_postdecode == _TIFFSwab32BitData )
tif->tif_postdecode = _TIFFSwab16BitData;
else if( (td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT
|| td->td_sampleformat == SAMPLEFORMAT_COMPLEXIEEEFP)
&& td->td_bitspersample == 64
&& tif->tif_postdecode == _TIFFSwab64BitData )
tif->tif_postdecode = _TIFFSwab32BitData;
else if( td->td_sampleformat == SAMPLEFORMAT_COMPLEXIEEEFP
&& td->td_bitspersample == 128
&& tif->tif_postdecode == NULL )
tif->tif_postdecode = _TIFFSwab64BitData;
break;
case TIFFTAG_IMAGEDEPTH:
td->td_imagedepth = va_arg(ap, uint32);
break;
case TIFFTAG_STONITS:
d = va_arg(ap, dblparam_t);
if (d <= 0.)
goto badvaluedbl;
td->td_stonits = d;
break;
/* Begin Pixar Tags */
case TIFFTAG_PIXAR_IMAGEFULLWIDTH:
td->td_imagefullwidth = va_arg(ap, uint32);
break;
case TIFFTAG_PIXAR_IMAGEFULLLENGTH:
td->td_imagefulllength = va_arg(ap, uint32);
break;
case TIFFTAG_PIXAR_TEXTUREFORMAT:
_TIFFsetString(&td->td_textureformat, va_arg(ap, char*));
break;
case TIFFTAG_PIXAR_WRAPMODES:
_TIFFsetString(&td->td_wrapmodes, va_arg(ap, char*));
break;
case TIFFTAG_PIXAR_FOVCOT:
td->td_fovcot = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN:
_TIFFsetFloatArray(&td->td_matrixWorldToScreen,
va_arg(ap, float*), 16);
break;
case TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA:
_TIFFsetFloatArray(&td->td_matrixWorldToCamera,
va_arg(ap, float*), 16);
break;
/* End Pixar Tags */
case TIFFTAG_SUBIFD:
if ((tif->tif_flags & TIFF_INSUBIFD) == 0) {
td->td_nsubifd = (uint16) va_arg(ap, int);
_TIFFsetLongArray(&td->td_subifd, va_arg(ap, uint32*),
(long) td->td_nsubifd);
} else {
TIFFError(module, "%s: Sorry, cannot nest SubIFDs",
tif->tif_name);
status = 0;
}
break;
case TIFFTAG_YCBCRCOEFFICIENTS:
_TIFFsetFloatArray(&td->td_ycbcrcoeffs, va_arg(ap, float*), 3);
break;
case TIFFTAG_YCBCRPOSITIONING:
td->td_ycbcrpositioning = (uint16) va_arg(ap, int);
break;
case TIFFTAG_YCBCRSUBSAMPLING:
td->td_ycbcrsubsampling[0] = (uint16) va_arg(ap, int);
td->td_ycbcrsubsampling[1] = (uint16) va_arg(ap, int);
break;
case TIFFTAG_WHITEPOINT:
_TIFFsetFloatArray(&td->td_whitepoint, va_arg(ap, float*), 2);
break;
case TIFFTAG_PRIMARYCHROMATICITIES:
_TIFFsetFloatArray(&td->td_primarychromas, va_arg(ap, float*), 6);
break;
case TIFFTAG_TRANSFERFUNCTION:
v = (td->td_samplesperpixel - td->td_extrasamples) > 1 ? 3 : 1;
for (i = 0; i < v; i++)
_TIFFsetShortArray(&td->td_transferfunction[i],
va_arg(ap, uint16*), 1L<<td->td_bitspersample);
break;
case TIFFTAG_REFERENCEBLACKWHITE:
/* XXX should check for null range */
_TIFFsetFloatArray(&td->td_refblackwhite, va_arg(ap, float*), 6);
break;
case TIFFTAG_INKSET:
td->td_inkset = (uint16) va_arg(ap, int);
break;
case TIFFTAG_DOTRANGE:
/* XXX should check for null range */
td->td_dotrange[0] = (uint16) va_arg(ap, int);
td->td_dotrange[1] = (uint16) va_arg(ap, int);
break;
case TIFFTAG_INKNAMES:
i = va_arg(ap, int);
s = va_arg(ap, char*);
i = checkInkNamesString(tif, i, s);
status = i > 0;
if( i > 0 ) {
_TIFFsetNString(&td->td_inknames, s, i);
td->td_inknameslen = i;
}
break;
case TIFFTAG_NUMBEROFINKS:
td->td_ninks = (uint16) va_arg(ap, int);
break;
case TIFFTAG_TARGETPRINTER:
_TIFFsetString(&td->td_targetprinter, va_arg(ap, char*));
break;
case TIFFTAG_ICCPROFILE:
td->td_profileLength = (uint32) va_arg(ap, uint32);
_TIFFsetByteArray(&td->td_profileData, va_arg(ap, void*),
td->td_profileLength);
break;
case TIFFTAG_PHOTOSHOP:
td->td_photoshopLength = (uint32) va_arg(ap, uint32);
_TIFFsetByteArray (&td->td_photoshopData, va_arg(ap, void*),
td->td_photoshopLength);
break;
case TIFFTAG_RICHTIFFIPTC:
td->td_richtiffiptcLength = (uint32) va_arg(ap, uint32);
_TIFFsetLongArray ((uint32**)&td->td_richtiffiptcData,
va_arg(ap, uint32*),
td->td_richtiffiptcLength);
break;
case TIFFTAG_XMLPACKET:
td->td_xmlpacketLength = (uint32) va_arg(ap, uint32);
_TIFFsetByteArray(&td->td_xmlpacketData, va_arg(ap, void*),
td->td_xmlpacketLength);
break;
default: {
const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
TIFFTagValue *tv;
int tv_size, iCustom;
/*
* This can happen if multiple images are open with
* different codecs which have private tags. The
* global tag information table may then have tags
* that are valid for one file but not the other.
* If the client tries to set a tag that is not valid
* for the image's codec then we'll arrive here. This
* happens, for example, when tiffcp is used to convert
* between compression schemes and codec-specific tags
* are blindly copied.
*/
if( fip == NULL || fip->field_bit != FIELD_CUSTOM )
{
TIFFError(module,
"%s: Invalid %stag \"%s\" (not supported by codec)",
tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "",
_TIFFFieldWithTag(tif, tag)->field_name);
status = 0;
break;
}
/*
* Find the existing entry for this custom value.
*/
tv = NULL;
for( iCustom = 0; iCustom < td->td_customValueCount; iCustom++ )
{
if( td->td_customValues[iCustom].info == fip )
{
tv = td->td_customValues + iCustom;
if( tv->value != NULL )
_TIFFfree( tv->value );
break;
}
}
/*
* Grow the custom list if the entry was not found.
*/
if( tv == NULL )
{
TIFFTagValue *new_customValues;
td->td_customValueCount++;
new_customValues = (TIFFTagValue *)
_TIFFrealloc(td->td_customValues,
sizeof(TIFFTagValue) * td->td_customValueCount);
if (!new_customValues) {
TIFFError(module,
"%s: Failed to allocate space for list of custom values",
tif->tif_name);
status = 0;
goto end;
}
td->td_customValues = new_customValues;
tv = td->td_customValues + (td->td_customValueCount-1);
tv->info = fip;
tv->value = NULL;
tv->count = 0;
}
/*
* Set custom value ... save a copy of the custom tag value.
*/
switch (fip->field_type) {
/*
* XXX: We can't use TIFFDataWidth() to determine the
* space needed to store the value. For TIFF_RATIONAL
* values TIFFDataWidth() returns 8, but we use 4-byte
* float to represent rationals.
*/
case TIFF_BYTE:
case TIFF_ASCII:
case TIFF_SBYTE:
case TIFF_UNDEFINED:
tv_size = 1;
break;
case TIFF_SHORT:
case TIFF_SSHORT:
tv_size = 2;
break;
case TIFF_LONG:
case TIFF_SLONG:
case TIFF_FLOAT:
case TIFF_IFD:
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
tv_size = 4;
break;
case TIFF_DOUBLE:
tv_size = 8;
break;
default:
status = 0;
TIFFError(module, "%s: Bad field type %d for \"%s\"",
tif->tif_name, fip->field_type,
fip->field_name);
goto end;
}
if(fip->field_passcount)
tv->count = (int) va_arg(ap, int);
else
tv->count = 1;
if (fip->field_passcount) {
tv->value = _TIFFmalloc(tv_size * tv->count);
if ( !tv->value ) {
status = 0;
goto end;
}
_TIFFmemcpy(tv->value, (void *) va_arg(ap,void*),
tv->count * tv_size);
} else if (fip->field_type == TIFF_ASCII) {
const char *value = (const char *) va_arg(ap,const char *);
tv->count = strlen(value)+1;
tv->value = _TIFFmalloc(tv->count);
if (!tv->value) {
status = 0;
goto end;
}
strcpy(tv->value, value);
} else {
/* not supporting "pass by value" types yet */
TIFFError(module,
"%s: Pass by value is not implemented.",
tif->tif_name);
tv->value = _TIFFmalloc(tv_size * tv->count);
if (!tv->value) {
status = 0;
goto end;
}
_TIFFmemset(tv->value, 0, tv->count * tv_size);
status = 0;
}
}
}
if (status) {
TIFFSetFieldBit(tif, _TIFFFieldWithTag(tif, tag)->field_bit);
tif->tif_flags |= TIFF_DIRTYDIRECT;
}
end:
va_end(ap);
return (status);
badvalue:
TIFFError(module, "%s: Bad value %d for \"%s\"",
tif->tif_name, v, _TIFFFieldWithTag(tif, tag)->field_name);
va_end(ap);
return (0);
badvalue32:
TIFFError(module, "%s: Bad value %ld for \"%s\"",
tif->tif_name, v32, _TIFFFieldWithTag(tif, tag)->field_name);
va_end(ap);
return (0);
badvaluedbl:
TIFFError(module, "%s: Bad value %f for \"%s\"",
tif->tif_name, d, _TIFFFieldWithTag(tif, tag)->field_name);
va_end(ap);
return (0);
}
/*
* Return 1/0 according to whether or not
* it is permissible to set the tag's value.
* Note that we allow ImageLength to be changed
* so that we can append and extend to images.
* Any other tag may not be altered once writing
* has commenced, unless its value has no effect
* on the format of the data that is written.
*/
static int
OkToChangeTag(TIFF* tif, ttag_t tag)
{
const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
if (!fip) { /* unknown tag */
TIFFError("TIFFSetField", "%s: Unknown %stag %u",
tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", tag);
return (0);
}
if (tag != TIFFTAG_IMAGELENGTH && (tif->tif_flags & TIFF_BEENWRITING) &&
!fip->field_oktochange) {
/*
* Consult info table to see if tag can be changed
* after we've started writing. We only allow changes
* to those tags that don't/shouldn't affect the
* compression and/or format of the data.
*/
TIFFError("TIFFSetField",
"%s: Cannot modify tag \"%s\" while writing",
tif->tif_name, fip->field_name);
return (0);
}
return (1);
}
/*
* Record the value of a field in the
* internal directory structure. The
* field will be written to the file
* when/if the directory structure is
* updated.
*/
int
TIFFSetField(TIFF* tif, ttag_t tag, ...)
{
va_list ap;
int status;
va_start(ap, tag);
status = TIFFVSetField(tif, tag, ap);
va_end(ap);
return (status);
}
/*
* Like TIFFSetField, but taking a varargs
* parameter list. This routine is useful
* for building higher-level interfaces on
* top of the library.
*/
int
TIFFVSetField(TIFF* tif, ttag_t tag, va_list ap)
{
return OkToChangeTag(tif, tag) ?
(*tif->tif_tagmethods.vsetfield)(tif, tag, ap) : 0;
}
static int
_TIFFVGetField(TIFF* tif, ttag_t tag, va_list ap)
{
TIFFDirectory* td = &tif->tif_dir;
int ret_val = 1;
switch (tag) {
case TIFFTAG_SUBFILETYPE:
*va_arg(ap, uint32*) = td->td_subfiletype;
break;
case TIFFTAG_IMAGEWIDTH:
*va_arg(ap, uint32*) = td->td_imagewidth;
break;
case TIFFTAG_IMAGELENGTH:
*va_arg(ap, uint32*) = td->td_imagelength;
break;
case TIFFTAG_BITSPERSAMPLE:
*va_arg(ap, uint16*) = td->td_bitspersample;
break;
case TIFFTAG_COMPRESSION:
*va_arg(ap, uint16*) = td->td_compression;
break;
case TIFFTAG_PHOTOMETRIC:
*va_arg(ap, uint16*) = td->td_photometric;
break;
case TIFFTAG_THRESHHOLDING:
*va_arg(ap, uint16*) = td->td_threshholding;
break;
case TIFFTAG_FILLORDER:
*va_arg(ap, uint16*) = td->td_fillorder;
break;
case TIFFTAG_DOCUMENTNAME:
*va_arg(ap, char**) = td->td_documentname;
break;
case TIFFTAG_ARTIST:
*va_arg(ap, char**) = td->td_artist;
break;
case TIFFTAG_DATETIME:
*va_arg(ap, char**) = td->td_datetime;
break;
case TIFFTAG_HOSTCOMPUTER:
*va_arg(ap, char**) = td->td_hostcomputer;
break;
case TIFFTAG_IMAGEDESCRIPTION:
*va_arg(ap, char**) = td->td_imagedescription;
break;
case TIFFTAG_MAKE:
*va_arg(ap, char**) = td->td_make;
break;
case TIFFTAG_MODEL:
*va_arg(ap, char**) = td->td_model;
break;
case TIFFTAG_COPYRIGHT:
*va_arg(ap, char**) = td->td_copyright;
break;
case TIFFTAG_ORIENTATION:
*va_arg(ap, uint16*) = td->td_orientation;
break;
case TIFFTAG_SAMPLESPERPIXEL:
*va_arg(ap, uint16*) = td->td_samplesperpixel;
break;
case TIFFTAG_ROWSPERSTRIP:
*va_arg(ap, uint32*) = td->td_rowsperstrip;
break;
case TIFFTAG_MINSAMPLEVALUE:
*va_arg(ap, uint16*) = td->td_minsamplevalue;
break;
case TIFFTAG_MAXSAMPLEVALUE:
*va_arg(ap, uint16*) = td->td_maxsamplevalue;
break;
case TIFFTAG_SMINSAMPLEVALUE:
*va_arg(ap, double*) = td->td_sminsamplevalue;
break;
case TIFFTAG_SMAXSAMPLEVALUE:
*va_arg(ap, double*) = td->td_smaxsamplevalue;
break;
case TIFFTAG_XRESOLUTION:
*va_arg(ap, float*) = td->td_xresolution;
break;
case TIFFTAG_YRESOLUTION:
*va_arg(ap, float*) = td->td_yresolution;
break;
case TIFFTAG_PLANARCONFIG:
*va_arg(ap, uint16*) = td->td_planarconfig;
break;
case TIFFTAG_XPOSITION:
*va_arg(ap, float*) = td->td_xposition;
break;
case TIFFTAG_YPOSITION:
*va_arg(ap, float*) = td->td_yposition;
break;
case TIFFTAG_PAGENAME:
*va_arg(ap, char**) = td->td_pagename;
break;
case TIFFTAG_RESOLUTIONUNIT:
*va_arg(ap, uint16*) = td->td_resolutionunit;
break;
case TIFFTAG_PAGENUMBER:
*va_arg(ap, uint16*) = td->td_pagenumber[0];
*va_arg(ap, uint16*) = td->td_pagenumber[1];
break;
case TIFFTAG_HALFTONEHINTS:
*va_arg(ap, uint16*) = td->td_halftonehints[0];
*va_arg(ap, uint16*) = td->td_halftonehints[1];
break;
case TIFFTAG_COLORMAP:
*va_arg(ap, uint16**) = td->td_colormap[0];
*va_arg(ap, uint16**) = td->td_colormap[1];
*va_arg(ap, uint16**) = td->td_colormap[2];
break;
case TIFFTAG_STRIPOFFSETS:
case TIFFTAG_TILEOFFSETS:
*va_arg(ap, uint32**) = td->td_stripoffset;
break;
case TIFFTAG_STRIPBYTECOUNTS:
case TIFFTAG_TILEBYTECOUNTS:
*va_arg(ap, uint32**) = td->td_stripbytecount;
break;
case TIFFTAG_MATTEING:
*va_arg(ap, uint16*) =
(td->td_extrasamples == 1 &&
td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
break;
case TIFFTAG_EXTRASAMPLES:
*va_arg(ap, uint16*) = td->td_extrasamples;
*va_arg(ap, uint16**) = td->td_sampleinfo;
break;
case TIFFTAG_TILEWIDTH:
*va_arg(ap, uint32*) = td->td_tilewidth;
break;
case TIFFTAG_TILELENGTH:
*va_arg(ap, uint32*) = td->td_tilelength;
break;
case TIFFTAG_TILEDEPTH:
*va_arg(ap, uint32*) = td->td_tiledepth;
break;
case TIFFTAG_DATATYPE:
switch (td->td_sampleformat) {
case SAMPLEFORMAT_UINT:
*va_arg(ap, uint16*) = DATATYPE_UINT;
break;
case SAMPLEFORMAT_INT:
*va_arg(ap, uint16*) = DATATYPE_INT;
break;
case SAMPLEFORMAT_IEEEFP:
*va_arg(ap, uint16*) = DATATYPE_IEEEFP;
break;
case SAMPLEFORMAT_VOID:
*va_arg(ap, uint16*) = DATATYPE_VOID;
break;
}
break;
case TIFFTAG_SAMPLEFORMAT:
*va_arg(ap, uint16*) = td->td_sampleformat;
break;
case TIFFTAG_IMAGEDEPTH:
*va_arg(ap, uint32*) = td->td_imagedepth;
break;
case TIFFTAG_STONITS:
*va_arg(ap, double*) = td->td_stonits;
break;
case TIFFTAG_SUBIFD:
*va_arg(ap, uint16*) = td->td_nsubifd;
*va_arg(ap, uint32**) = td->td_subifd;
break;
case TIFFTAG_YCBCRCOEFFICIENTS:
*va_arg(ap, float**) = td->td_ycbcrcoeffs;
break;
case TIFFTAG_YCBCRPOSITIONING:
*va_arg(ap, uint16*) = td->td_ycbcrpositioning;
break;
case TIFFTAG_YCBCRSUBSAMPLING:
*va_arg(ap, uint16*) = td->td_ycbcrsubsampling[0];
*va_arg(ap, uint16*) = td->td_ycbcrsubsampling[1];
break;
case TIFFTAG_WHITEPOINT:
*va_arg(ap, float**) = td->td_whitepoint;
break;
case TIFFTAG_PRIMARYCHROMATICITIES:
*va_arg(ap, float**) = td->td_primarychromas;
break;
case TIFFTAG_TRANSFERFUNCTION:
*va_arg(ap, uint16**) = td->td_transferfunction[0];
if (td->td_samplesperpixel - td->td_extrasamples > 1) {
*va_arg(ap, uint16**) = td->td_transferfunction[1];
*va_arg(ap, uint16**) = td->td_transferfunction[2];
}
break;
case TIFFTAG_REFERENCEBLACKWHITE:
*va_arg(ap, float**) = td->td_refblackwhite;
break;
case TIFFTAG_INKSET:
*va_arg(ap, uint16*) = td->td_inkset;
break;
case TIFFTAG_DOTRANGE:
*va_arg(ap, uint16*) = td->td_dotrange[0];
*va_arg(ap, uint16*) = td->td_dotrange[1];
break;
case TIFFTAG_INKNAMES:
*va_arg(ap, char**) = td->td_inknames;
break;
case TIFFTAG_NUMBEROFINKS:
*va_arg(ap, uint16*) = td->td_ninks;
break;
case TIFFTAG_TARGETPRINTER:
*va_arg(ap, char**) = td->td_targetprinter;
break;
case TIFFTAG_ICCPROFILE:
*va_arg(ap, uint32*) = td->td_profileLength;
*va_arg(ap, void**) = td->td_profileData;
break;
case TIFFTAG_PHOTOSHOP:
*va_arg(ap, uint32*) = td->td_photoshopLength;
*va_arg(ap, void**) = td->td_photoshopData;
break;
case TIFFTAG_RICHTIFFIPTC:
*va_arg(ap, uint32*) = td->td_richtiffiptcLength;
*va_arg(ap, void**) = td->td_richtiffiptcData;
break;
case TIFFTAG_XMLPACKET:
*va_arg(ap, uint32*) = td->td_xmlpacketLength;
*va_arg(ap, void**) = td->td_xmlpacketData;
break;
/* Begin Pixar Tags */
case TIFFTAG_PIXAR_IMAGEFULLWIDTH:
*va_arg(ap, uint32*) = td->td_imagefullwidth;
break;
case TIFFTAG_PIXAR_IMAGEFULLLENGTH:
*va_arg(ap, uint32*) = td->td_imagefulllength;
break;
case TIFFTAG_PIXAR_TEXTUREFORMAT:
*va_arg(ap, char**) = td->td_textureformat;
break;
case TIFFTAG_PIXAR_WRAPMODES:
*va_arg(ap, char**) = td->td_wrapmodes;
break;
case TIFFTAG_PIXAR_FOVCOT:
*va_arg(ap, float*) = td->td_fovcot;
break;
case TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN:
*va_arg(ap, float**) = td->td_matrixWorldToScreen;
break;
case TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA:
*va_arg(ap, float**) = td->td_matrixWorldToCamera;
break;
/* End Pixar Tags */
default:
{
const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
int i;
/*
* This can happen if multiple images are open with
* different codecs which have private tags. The
* global tag information table may then have tags
* that are valid for one file but not the other.
* If the client tries to get a tag that is not valid
* for the image's codec then we'll arrive here.
*/
if( fip == NULL || fip->field_bit != FIELD_CUSTOM )
{
TIFFError("_TIFFVGetField",
"%s: Invalid %stag \"%s\" (not supported by codec)",
tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "",
_TIFFFieldWithTag(tif, tag)->field_name);
ret_val = 0;
break;
}
/*
** Do we have a custom value?
*/
ret_val = 0;
for (i = 0; i < td->td_customValueCount; i++)
{
TIFFTagValue *tv = td->td_customValues + i;
if (tv->info->field_tag != tag)
continue;
if (fip->field_passcount) {
if (fip->field_readcount == TIFF_VARIABLE2)
*va_arg(ap, uint32*) = (uint32)tv->count;
else /* Assume TIFF_VARIABLE */
*va_arg(ap, uint16*) = (uint16)tv->count;
*va_arg(ap, void **) = tv->value;
ret_val = 1;
break;
} else if (fip->field_type == TIFF_ASCII) {
*va_arg(ap, void **) = tv->value;
ret_val = 1;
break;
} else {
TIFFError("_TIFFVGetField",
"%s: Pass by value is not implemented.",
tif->tif_name);
break;
}
}
}
}
return(ret_val);
}
/*
* Return the value of a field in the
* internal directory structure.
*/
int
TIFFGetField(TIFF* tif, ttag_t tag, ...)
{
int status;
va_list ap;
va_start(ap, tag);
status = TIFFVGetField(tif, tag, ap);
va_end(ap);
return (status);
}
/*
* Like TIFFGetField, but taking a varargs
* parameter list. This routine is useful
* for building higher-level interfaces on
* top of the library.
*/
int
TIFFVGetField(TIFF* tif, ttag_t tag, va_list ap)
{
const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY);
return (fip && (isPseudoTag(tag) || TIFFFieldSet(tif, fip->field_bit)) ?
(*tif->tif_tagmethods.vgetfield)(tif, tag, ap) : 0);
}
#define CleanupField(member) { \
if (td->member) { \
_TIFFfree(td->member); \
td->member = 0; \
} \
}
/*
* Release storage associated with a directory.
*/
void
TIFFFreeDirectory(TIFF* tif)
{
TIFFDirectory *td = &tif->tif_dir;
int i;
CleanupField(td_colormap[0]);
CleanupField(td_colormap[1]);
CleanupField(td_colormap[2]);
CleanupField(td_documentname);
CleanupField(td_artist);
CleanupField(td_datetime);
CleanupField(td_hostcomputer);
CleanupField(td_imagedescription);
CleanupField(td_make);
CleanupField(td_model);
CleanupField(td_copyright);
CleanupField(td_pagename);
CleanupField(td_sampleinfo);
CleanupField(td_subifd);
CleanupField(td_ycbcrcoeffs);
CleanupField(td_inknames);
CleanupField(td_targetprinter);
CleanupField(td_whitepoint);
CleanupField(td_primarychromas);
CleanupField(td_refblackwhite);
CleanupField(td_transferfunction[0]);
CleanupField(td_transferfunction[1]);
CleanupField(td_transferfunction[2]);
CleanupField(td_profileData);
CleanupField(td_photoshopData);
CleanupField(td_richtiffiptcData);
CleanupField(td_xmlpacketData);
CleanupField(td_stripoffset);
CleanupField(td_stripbytecount);
/* Begin Pixar Tags */
CleanupField(td_textureformat);
CleanupField(td_wrapmodes);
CleanupField(td_matrixWorldToScreen);
CleanupField(td_matrixWorldToCamera);
/* End Pixar Tags */
/* Cleanup custom tag values */
for( i = 0; i < td->td_customValueCount; i++ ) {
if (td->td_customValues[i].value)
_TIFFfree(td->td_customValues[i].value);
}
td->td_customValueCount = 0;
CleanupField(td_customValues);
}
#undef CleanupField
/*
* Client Tag extension support (from Niles Ritter).
*/
static TIFFExtendProc _TIFFextender = (TIFFExtendProc) NULL;
TIFFExtendProc
TIFFSetTagExtender(TIFFExtendProc extender)
{
TIFFExtendProc prev = _TIFFextender;
_TIFFextender = extender;
return (prev);
}
/*
* Setup for a new directory. Should we automatically call
* TIFFWriteDirectory() if the current one is dirty?
*
* The newly created directory will not exist on the file till
* TIFFWriteDirectory(), TIFFFlush() or TIFFClose() is called.
*/
int
TIFFCreateDirectory(TIFF* tif)
{
TIFFDefaultDirectory(tif);
tif->tif_diroff = 0;
tif->tif_nextdiroff = 0;
tif->tif_curoff = 0;
tif->tif_row = (uint32) -1;
tif->tif_curstrip = (tstrip_t) -1;
return 0;
}
/*
* Setup a default directory structure.
*/
int
TIFFDefaultDirectory(TIFF* tif)
{
register TIFFDirectory* td = &tif->tif_dir;
_TIFFSetupFieldInfo(tif);
_TIFFmemset(td, 0, sizeof (*td));
td->td_fillorder = FILLORDER_MSB2LSB;
td->td_bitspersample = 1;
td->td_threshholding = THRESHHOLD_BILEVEL;
td->td_orientation = ORIENTATION_TOPLEFT;
td->td_samplesperpixel = 1;
td->td_rowsperstrip = (uint32) -1;
td->td_tilewidth = 0;
td->td_tilelength = 0;
td->td_tiledepth = 1;
td->td_stripbytecountsorted = 1; /* Our own arrays always sorted. */
td->td_resolutionunit = RESUNIT_INCH;
td->td_sampleformat = SAMPLEFORMAT_UINT;
td->td_imagedepth = 1;
td->td_ycbcrsubsampling[0] = 2;
td->td_ycbcrsubsampling[1] = 2;
td->td_ycbcrpositioning = YCBCRPOSITION_CENTERED;
td->td_inkset = INKSET_CMYK;
td->td_ninks = 4;
tif->tif_postdecode = _TIFFNoPostDecode;
tif->tif_foundfield = NULL;
tif->tif_tagmethods.vsetfield = _TIFFVSetField;
tif->tif_tagmethods.vgetfield = _TIFFVGetField;
tif->tif_tagmethods.printdir = NULL;
/*
* Give client code a chance to install their own
* tag extensions & methods, prior to compression overloads.
*/
if (_TIFFextender)
(*_TIFFextender)(tif);
(void) TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
/*
* NB: The directory is marked dirty as a result of setting
* up the default compression scheme. However, this really
* isn't correct -- we want TIFF_DIRTYDIRECT to be set only
* if the user does something. We could just do the setup
* by hand, but it seems better to use the normal mechanism
* (i.e. TIFFSetField).
*/
tif->tif_flags &= ~TIFF_DIRTYDIRECT;
/*
* As per http://bugzilla.remotesensing.org/show_bug.cgi?id=19
* we clear the ISTILED flag when setting up a new directory.
* Should we also be clearing stuff like INSUBIFD?
*/
tif->tif_flags &= ~TIFF_ISTILED;
return (1);
}
static int
TIFFAdvanceDirectory(TIFF* tif, uint32* nextdir, toff_t* off)
{
static const char module[] = "TIFFAdvanceDirectory";
uint16 dircount;
if (isMapped(tif))
{
toff_t poff=*nextdir;
if (poff+sizeof(uint16) > tif->tif_size)
{
TIFFError(module, "%s: Error fetching directory count",
tif->tif_name);
return (0);
}
_TIFFmemcpy(&dircount, tif->tif_base+poff, sizeof (uint16));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
poff+=sizeof (uint16)+dircount*sizeof (TIFFDirEntry);
if (off != NULL)
*off = poff;
if (((toff_t) (poff+sizeof (uint32))) > tif->tif_size)
{
TIFFError(module, "%s: Error fetching directory link",
tif->tif_name);
return (0);
}
_TIFFmemcpy(nextdir, tif->tif_base+poff, sizeof (uint32));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(nextdir);
return (1);
}
else
{
if (!SeekOK(tif, *nextdir) ||
!ReadOK(tif, &dircount, sizeof (uint16))) {
TIFFError(module, "%s: Error fetching directory count",
tif->tif_name);
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
if (off != NULL)
*off = TIFFSeekFile(tif,
dircount*sizeof (TIFFDirEntry), SEEK_CUR);
else
(void) TIFFSeekFile(tif,
dircount*sizeof (TIFFDirEntry), SEEK_CUR);
if (!ReadOK(tif, nextdir, sizeof (uint32))) {
TIFFError(module, "%s: Error fetching directory link",
tif->tif_name);
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(nextdir);
return (1);
}
}
/*
* Count the number of directories in a file.
*/
tdir_t
TIFFNumberOfDirectories(TIFF* tif)
{
toff_t nextdir = tif->tif_header.tiff_diroff;
tdir_t n = 0;
while (nextdir != 0 && TIFFAdvanceDirectory(tif, &nextdir, NULL))
n++;
return (n);
}
/*
* Set the n-th directory as the current directory.
* NB: Directories are numbered starting at 0.
*/
int
TIFFSetDirectory(TIFF* tif, tdir_t dirn)
{
toff_t nextdir;
tdir_t n;
nextdir = tif->tif_header.tiff_diroff;
for (n = dirn; n > 0 && nextdir != 0; n--)
if (!TIFFAdvanceDirectory(tif, &nextdir, NULL))
return (0);
tif->tif_nextdiroff = nextdir;
/*
* Set curdir to the actual directory index. The
* -1 is because TIFFReadDirectory will increment
* tif_curdir after successfully reading the directory.
*/
tif->tif_curdir = (dirn - n) - 1;
/*
* Reset tif_dirnumber counter and start new list of seen directories.
* We need this to prevent IFD loops.
*/
tif->tif_dirnumber = 0;
return (TIFFReadDirectory(tif));
}
/*
* Set the current directory to be the directory
* located at the specified file offset. This interface
* is used mainly to access directories linked with
* the SubIFD tag (e.g. thumbnail images).
*/
int
TIFFSetSubDirectory(TIFF* tif, uint32 diroff)
{
tif->tif_nextdiroff = diroff;
/*
* Reset tif_dirnumber counter and start new list of seen directories.
* We need this to prevent IFD loops.
*/
tif->tif_dirnumber = 0;
return (TIFFReadDirectory(tif));
}
/*
* Return file offset of the current directory.
*/
uint32
TIFFCurrentDirOffset(TIFF* tif)
{
return (tif->tif_diroff);
}
/*
* Return an indication of whether or not we are
* at the last directory in the file.
*/
int
TIFFLastDirectory(TIFF* tif)
{
return (tif->tif_nextdiroff == 0);
}
/*
* Unlink the specified directory from the directory chain.
*/
int
TIFFUnlinkDirectory(TIFF* tif, tdir_t dirn)
{
static const char module[] = "TIFFUnlinkDirectory";
toff_t nextdir;
toff_t off;
tdir_t n;
if (tif->tif_mode == O_RDONLY) {
TIFFError(module, "Can not unlink directory in read-only file");
return (0);
}
/*
* Go to the directory before the one we want
* to unlink and nab the offset of the link
* field we'll need to patch.
*/
nextdir = tif->tif_header.tiff_diroff;
off = sizeof (uint16) + sizeof (uint16);
for (n = dirn-1; n > 0; n--) {
if (nextdir == 0) {
TIFFError(module, "Directory %d does not exist", dirn);
return (0);
}
if (!TIFFAdvanceDirectory(tif, &nextdir, &off))
return (0);
}
/*
* Advance to the directory to be unlinked and fetch
* the offset of the directory that follows.
*/
if (!TIFFAdvanceDirectory(tif, &nextdir, NULL))
return (0);
/*
* Go back and patch the link field of the preceding
* directory to point to the offset of the directory
* that follows.
*/
(void) TIFFSeekFile(tif, off, SEEK_SET);
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&nextdir);
if (!WriteOK(tif, &nextdir, sizeof (uint32))) {
TIFFError(module, "Error writing directory link");
return (0);
}
/*
* Leave directory state setup safely. We don't have
* facilities for doing inserting and removing directories,
* so it's safest to just invalidate everything. This
* means that the caller can only append to the directory
* chain.
*/
(*tif->tif_cleanup)(tif);
if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
_TIFFfree(tif->tif_rawdata);
tif->tif_rawdata = NULL;
tif->tif_rawcc = 0;
}
tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP|TIFF_POSTENCODE);
TIFFFreeDirectory(tif);
TIFFDefaultDirectory(tif);
tif->tif_diroff = 0; /* force link on next write */
tif->tif_nextdiroff = 0; /* next write must be at end */
tif->tif_curoff = 0;
tif->tif_row = (uint32) -1;
tif->tif_curstrip = (tstrip_t) -1;
return (1);
}
/* [BFC]
*
* Author: Bruce Cameron <cameron@petris.com>
*
* Set a table of tags that are to be replaced during directory process by the
* 'IGNORE' state - or return TRUE/FALSE for the requested tag such that
* 'ReadDirectory' can use the stored information.
*
* FIXME: this is never used properly. Should be removed in the future.
*/
int
TIFFReassignTagToIgnore (enum TIFFIgnoreSense task, int TIFFtagID)
{
static int TIFFignoretags [FIELD_LAST];
static int tagcount = 0 ;
int i; /* Loop index */
int j; /* Loop index */
switch (task)
{
case TIS_STORE:
if ( tagcount < (FIELD_LAST - 1) )
{
for ( j = 0 ; j < tagcount ; ++j )
{ /* Do not add duplicate tag */
if ( TIFFignoretags [j] == TIFFtagID )
return (TRUE) ;
}
TIFFignoretags [tagcount++] = TIFFtagID ;
return (TRUE) ;
}
break ;
case TIS_EXTRACT:
for ( i = 0 ; i < tagcount ; ++i )
{
if ( TIFFignoretags [i] == TIFFtagID )
return (TRUE) ;
}
break;
case TIS_EMPTY:
tagcount = 0 ; /* Clear the list */
return (TRUE) ;
default:
break;
}
return (FALSE);
}
/* vim: set ts=8 sts=8 sw=8 noet: */
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