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#ifndef lint
static char rcsid[] = "$Header: /usr/people/sam/tiff/libtiff/RCS/tif_dir.c,v 1.121 92/11/17 18:08:52 sam Exp $";
#endif
/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler
* Copyright (c) 1991, 1992 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)
*
* NB: Beware of the varargs declarations for routines in
* this file. The names and types of variables has been
* carefully chosen to make things work with compilers that
* are busted in one way or another (e.g. SGI/MIPS).
*/
#include "tiffiop.h"
static
DECLARE2(setString, char**, cpp, char*, cp)
{
if (*cpp)
_TIFFfree(*cpp), *cpp = 0;
if (cp) {
int len = strlen(cp)+1;
if (*cpp = _TIFFmalloc(len))
memcpy(*cpp, cp, len);
}
}
static
DECLARE3(setShortArray, u_short**, wpp, u_short*, wp, long, n)
{
if (*wpp)
_TIFFfree((char *)*wpp), *wpp = 0;
n *= sizeof (u_short);
if (wp && (*wpp = (u_short *)_TIFFmalloc(n)))
memcpy(*wpp, wp, n);
}
static
DECLARE3(setLongArray, u_long**, wpp, u_long*, wp, long, n)
{
if (*wpp)
_TIFFfree((char *)*wpp), *wpp = 0;
n *= sizeof (u_long);
if (wp && (*wpp = (u_long *)_TIFFmalloc(n)))
memcpy(*wpp, wp, n);
}
static
DECLARE3(setFloatArray, float**, wpp, float*, wp, long, n)
{
if (*wpp)
_TIFFfree((char *)*wpp), *wpp = 0;
n *= sizeof (float);
if (wp && (*wpp = (float *)_TIFFmalloc(n)))
memcpy(*wpp, wp, n);
}
#ifdef JPEG_SUPPORT
/*
* Install a JPEG Quantization table.
* Note that we reorder the elements
* of the array in the zig-zag order
* that is expected by the compression code
* and that is to be stored in the file.
*/
static
DECLARE3(setJPEGQTable, u_char***, wpp, u_char**, wp, int, nc)
{
static u_char zigzag[64] = {
0, 1, 5, 6, 14, 15, 27, 28,
2, 4, 7, 13, 16, 26, 29, 42,
3, 8, 12, 17, 25, 30, 41, 43,
9, 11, 18, 24, 31, 40, 44, 53,
10, 19, 23, 32, 39, 45, 52, 54,
20, 22, 33, 38, 46, 51, 55, 60,
21, 34, 37, 47, 50, 56, 59, 61,
35, 36, 48, 49, 57, 58, 62, 63
};
char *tab;
int i, j;
if (*wpp)
_TIFFfree((char *)*wpp), *wpp = 0;
*wpp = (u_char **)
_TIFFmalloc(nc * (sizeof (u_char *) + 64*sizeof (u_char)));
tab = (((char *)*wpp) + nc*sizeof (u_short *));
for (i = 0; i < nc; i++) {
(*wpp)[i] = (u_char *)tab;
for (j = 0; j < 64; j++)
tab[zigzag[j]] = wp[i][j];
tab += 64*sizeof (u_char);
}
}
/*
* Install a JPEG Coefficient table.
*/
static
DECLARE3(setJPEGCTable, u_char***, cpp, u_char**, cp, int, nc)
{
u_char *tab;
int i, j, nw;
if (*cpp)
_TIFFfree(*cpp), *cpp = 0;
/*
* Calculate the size of the table by counting
* the number of codes specified in the bits array.
*/
nw = 0;
for (i = 0; i < nc; i++) {
nw += 16; /* 16 bytes for bits array */
for (j = 0; j < 16; j++)/* sum up count of codes */
nw += cp[i][j];
}
*cpp = (u_char **)_TIFFmalloc(nc*sizeof (u_char *) + nw);
tab = ((u_char *)*cpp) + nc*sizeof (u_char *);
/*
* Setup internal array and copy user data.
*/
for (i = 0; i < nc; i++) {
(*cpp)[i] = tab;
for (nw = 16, j = 0; j < 16; j++)
nw += cp[i][j];
memcpy(tab, cp[i], nw);
tab += nw;
}
}
#endif
static
DECLARE3(TIFFSetField1, TIFF*, tif, u_int, tag, va_list, ap)
{
TIFFDirectory *td = &tif->tif_dir;
int i, status = 1;
long v;
switch (tag) {
case TIFFTAG_SUBFILETYPE:
td->td_subfiletype = va_arg(ap, u_long);
break;
case TIFFTAG_IMAGEWIDTH:
td->td_imagewidth = va_arg(ap, u_long);
break;
case TIFFTAG_IMAGELENGTH:
td->td_imagelength = va_arg(ap, u_long);
break;
case TIFFTAG_BITSPERSAMPLE:
td->td_bitspersample = va_arg(ap, int);
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;
if (tif->tif_cleanup)
(*tif->tif_cleanup)(tif);
}
/*
* Setup new compression routine state.
*/
if (status = TIFFSetCompressionScheme(tif, v))
td->td_compression = v;
break;
case TIFFTAG_PHOTOMETRIC:
td->td_photometric = va_arg(ap, int);
break;
case TIFFTAG_THRESHHOLDING:
td->td_threshholding = 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 = v;
break;
case TIFFTAG_DOCUMENTNAME:
setString(&td->td_documentname, va_arg(ap, char *));
break;
case TIFFTAG_ARTIST:
setString(&td->td_artist, va_arg(ap, char *));
break;
case TIFFTAG_DATETIME:
setString(&td->td_datetime, va_arg(ap, char *));
break;
case TIFFTAG_HOSTCOMPUTER:
setString(&td->td_hostcomputer, va_arg(ap, char *));
break;
case TIFFTAG_IMAGEDESCRIPTION:
setString(&td->td_imagedescription, va_arg(ap, char *));
break;
case TIFFTAG_MAKE:
setString(&td->td_make, va_arg(ap, char *));
break;
case TIFFTAG_MODEL:
setString(&td->td_model, va_arg(ap, char *));
break;
case TIFFTAG_SOFTWARE:
setString(&td->td_software, 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(tag)->field_name);
} else
td->td_orientation = 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;
if (v > 4) {
TIFFError(tif->tif_name,
"Cannot handle %ld-channel data", v);
status = 0;
} else
td->td_samplesperpixel = v;
break;
case TIFFTAG_ROWSPERSTRIP:
v = va_arg(ap, u_long);
if (v == 0)
goto badvalue;
td->td_rowsperstrip = v;
if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
td->td_tilelength = v;
td->td_tilewidth = td->td_imagewidth;
}
break;
case TIFFTAG_MINSAMPLEVALUE:
td->td_minsamplevalue = va_arg(ap, int) & 0xffff;
break;
case TIFFTAG_MAXSAMPLEVALUE:
td->td_maxsamplevalue = va_arg(ap, int) & 0xffff;
break;
case TIFFTAG_XRESOLUTION:
td->td_xresolution = va_arg(ap, dblparam_t);
break;
case TIFFTAG_YRESOLUTION:
td->td_yresolution = 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 = v;
break;
case TIFFTAG_PAGENAME:
setString(&td->td_pagename, va_arg(ap, char *));
break;
case TIFFTAG_XPOSITION:
td->td_xposition = va_arg(ap, dblparam_t);
break;
case TIFFTAG_YPOSITION:
td->td_yposition = va_arg(ap, dblparam_t);
break;
case TIFFTAG_GROUP3OPTIONS:
td->td_group3options = va_arg(ap, u_long);
break;
case TIFFTAG_GROUP4OPTIONS:
td->td_group4options = va_arg(ap, u_long);
break;
case TIFFTAG_RESOLUTIONUNIT:
v = va_arg(ap, int);
if (v < RESUNIT_NONE || RESUNIT_CENTIMETER < v)
goto badvalue;
td->td_resolutionunit = v;
break;
case TIFFTAG_PAGENUMBER:
td->td_pagenumber[0] = va_arg(ap, int);
td->td_pagenumber[1] = va_arg(ap, int);
break;
case TIFFTAG_HALFTONEHINTS:
td->td_halftonehints[0] = va_arg(ap, int);
td->td_halftonehints[1] = va_arg(ap, int);
break;
case TIFFTAG_COLORMAP:
v = 1L<<td->td_bitspersample;
setShortArray(&td->td_colormap[0], va_arg(ap, u_short *), v);
setShortArray(&td->td_colormap[1], va_arg(ap, u_short *), v);
setShortArray(&td->td_colormap[2], va_arg(ap, u_short *), v);
break;
case TIFFTAG_PREDICTOR:
td->td_predictor = va_arg(ap, int);
break;
case TIFFTAG_EXTRASAMPLES:
v = va_arg(ap, int);
if (v > td->td_samplesperpixel)
goto badvalue;
if (v != 1) /* XXX */
goto badvalue; /* XXX */
v = va_arg(ap, int);
if (v != EXTRASAMPLE_ASSOCALPHA)/* XXX */
goto badvalue; /* XXX */
td->td_matteing = 1;
break;
case TIFFTAG_MATTEING:
td->td_matteing = va_arg(ap, int);
break;
case TIFFTAG_BADFAXLINES:
td->td_badfaxlines = va_arg(ap, u_long);
break;
case TIFFTAG_CLEANFAXDATA:
td->td_cleanfaxdata = va_arg(ap, int);
break;
case TIFFTAG_CONSECUTIVEBADFAXLINES:
td->td_badfaxrun = va_arg(ap, u_long);
break;
case TIFFTAG_TILEWIDTH:
v = va_arg(ap, u_long);
if (v % 16)
goto badvalue;
td->td_tilewidth = v;
tif->tif_flags |= TIFF_ISTILED;
break;
case TIFFTAG_TILELENGTH:
v = va_arg(ap, u_long);
if (v % 16)
goto badvalue;
td->td_tilelength = v;
tif->tif_flags |= TIFF_ISTILED;
break;
case TIFFTAG_TILEDEPTH:
v = va_arg(ap, u_long);
if (v == 0)
goto badvalue;
td->td_tiledepth = v;
break;
case TIFFTAG_DATATYPE:
case TIFFTAG_SAMPLEFORMAT:
v = va_arg(ap, int);
if (tag == TIFFTAG_DATATYPE && v == 0)
v = SAMPLEFORMAT_VOID;
if (v < SAMPLEFORMAT_INT || SAMPLEFORMAT_VOID < v)
goto badvalue;
td->td_sampleformat = v;
break;
case TIFFTAG_IMAGEDEPTH:
td->td_imagedepth = va_arg(ap, u_long);
break;
#ifdef YCBCR_SUPPORT
case TIFFTAG_YCBCRCOEFFICIENTS:
setFloatArray(&td->td_ycbcrcoeffs, va_arg(ap, float *), 3);
break;
case TIFFTAG_YCBCRPOSITIONING:
td->td_ycbcrpositioning = va_arg(ap, int);
break;
case TIFFTAG_YCBCRSUBSAMPLING:
td->td_ycbcrsubsampling[0] = va_arg(ap, int);
td->td_ycbcrsubsampling[1] = va_arg(ap, int);
break;
#endif
#ifdef JPEG_SUPPORT
case TIFFTAG_JPEGPROC:
td->td_jpegproc = va_arg(ap, int);
break;
case TIFFTAG_JPEGRESTARTINTERVAL:
td->td_jpegrestartinterval = va_arg(ap, int);
break;
case TIFFTAG_JPEGQTABLES:
setJPEGQTable(&td->td_qtab, va_arg(ap, u_char **),
td->td_samplesperpixel);
break;
case TIFFTAG_JPEGDCTABLES:
setJPEGCTable(&td->td_dctab, va_arg(ap, u_char **),
td->td_samplesperpixel);
break;
case TIFFTAG_JPEGACTABLES:
setJPEGCTable(&td->td_actab, va_arg(ap, u_char **),
td->td_samplesperpixel);
break;
#endif
#ifdef COLORIMETRY_SUPPORT
case TIFFTAG_WHITEPOINT:
setFloatArray(&td->td_whitepoint, va_arg(ap, float *), 2);
break;
case TIFFTAG_PRIMARYCHROMATICITIES:
setFloatArray(&td->td_primarychromas, va_arg(ap, float *), 6);
break;
case TIFFTAG_TRANSFERFUNCTION:
v = (td->td_samplesperpixel - td->td_matteing) > 1 ? 3 : 1;
for (i = 0; i < v; i++)
setShortArray(&td->td_transferfunction[i],
va_arg(ap, u_short *), 1L<<td->td_bitspersample);
break;
case TIFFTAG_REFERENCEBLACKWHITE:
/* XXX should check for null range */
setFloatArray(&td->td_refblackwhite, va_arg(ap, float *), 6);
break;
#endif
#ifdef CMYK_SUPPORT
case TIFFTAG_INKSET:
td->td_inkset = va_arg(ap, int);
break;
case TIFFTAG_DOTRANGE:
/* XXX should check for null range */
td->td_dotrange[0] = va_arg(ap, int);
td->td_dotrange[1] = va_arg(ap, int);
break;
case TIFFTAG_INKNAMES:
setString(&td->td_inknames, va_arg(ap, char *));
break;
case TIFFTAG_TARGETPRINTER:
setString(&td->td_targetprinter, va_arg(ap, char *));
break;
#endif
default:
TIFFError(tif->tif_name,
"Internal error, tag value botch, tag \"%s\"",
TIFFFieldWithTag(tag)->field_name);
status = 0;
break;
}
if (status) {
TIFFSetFieldBit(tif, TIFFFieldWithTag(tag)->field_bit);
tif->tif_flags |= TIFF_DIRTYDIRECT;
}
va_end(ap);
return (status);
badvalue:
TIFFError(tif->tif_name, "%ld: Bad value for \"%s\"", v,
TIFFFieldWithTag(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
DECLARE2(OkToChangeTag, TIFF*, tif, u_int, tag)
{
if (tag != TIFFTAG_IMAGELENGTH &&
(tif->tif_flags & TIFF_BEENWRITING)) {
const TIFFFieldInfo *fip = TIFFFindFieldInfo(tag, TIFF_ANY);
/*
* 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.
*/
if (fip && !fip->field_oktochange)
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.
*/
/*VARARGS2*/
DECLARE2V(TIFFSetField, TIFF*, tif, u_int, tag)
{
int status = 0;
if (OkToChangeTag(tif, tag)) {
va_list ap;
VA_START(ap, tag);
status = TIFFSetField1(tif, tag, ap);
va_end(ap);
} else {
const TIFFFieldInfo *fip = TIFFFindFieldInfo(tag, TIFF_ANY);
if (fip)
TIFFError("TIFFSetField",
"%s: Cannot modify tag \"%s\" while writing",
tif->tif_name, fip->field_name);
}
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
DECLARE3(TIFFVSetField, TIFF*, tif, u_int, tag, va_list, ap)
{
int status = 0;
if (!OkToChangeTag(tif, tag)) {
const TIFFFieldInfo *fip = TIFFFindFieldInfo(tag, TIFF_ANY);
if (fip)
TIFFError("TIFFVSetField",
"%s: Cannot modify tag \"%s\" while writing",
tif->tif_name, fip->field_name);
} else
status = TIFFSetField1(tif, tag, ap);
return (status);
}
static
DECLARE3(TIFFGetField1, TIFFDirectory*, td, u_int, tag, va_list, ap)
{
switch (tag) {
case TIFFTAG_SUBFILETYPE:
*va_arg(ap, u_long *) = td->td_subfiletype;
break;
case TIFFTAG_IMAGEWIDTH:
*va_arg(ap, u_long *) = td->td_imagewidth;
break;
case TIFFTAG_IMAGELENGTH:
*va_arg(ap, u_long *) = td->td_imagelength;
break;
case TIFFTAG_BITSPERSAMPLE:
*va_arg(ap, u_short *) = td->td_bitspersample;
break;
case TIFFTAG_COMPRESSION:
*va_arg(ap, u_short *) = td->td_compression;
break;
case TIFFTAG_PHOTOMETRIC:
*va_arg(ap, u_short *) = td->td_photometric;
break;
case TIFFTAG_THRESHHOLDING:
*va_arg(ap, u_short *) = td->td_threshholding;
break;
case TIFFTAG_FILLORDER:
*va_arg(ap, u_short *) = 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_SOFTWARE:
*va_arg(ap, char **) = td->td_software;
break;
case TIFFTAG_ORIENTATION:
*va_arg(ap, u_short *) = td->td_orientation;
break;
case TIFFTAG_SAMPLESPERPIXEL:
*va_arg(ap, u_short *) = td->td_samplesperpixel;
break;
case TIFFTAG_ROWSPERSTRIP:
*va_arg(ap, u_long *) = td->td_rowsperstrip;
break;
case TIFFTAG_MINSAMPLEVALUE:
*va_arg(ap, u_short *) = td->td_minsamplevalue;
break;
case TIFFTAG_MAXSAMPLEVALUE:
*va_arg(ap, u_short *) = td->td_maxsamplevalue;
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, u_short *) = 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_GROUP3OPTIONS:
*va_arg(ap, u_long *) = td->td_group3options;
break;
case TIFFTAG_GROUP4OPTIONS:
*va_arg(ap, u_long *) = td->td_group4options;
break;
case TIFFTAG_RESOLUTIONUNIT:
*va_arg(ap, u_short *) = td->td_resolutionunit;
break;
case TIFFTAG_PAGENUMBER:
*va_arg(ap, u_short *) = td->td_pagenumber[0];
*va_arg(ap, u_short *) = td->td_pagenumber[1];
break;
case TIFFTAG_HALFTONEHINTS:
*va_arg(ap, u_short *) = td->td_halftonehints[0];
*va_arg(ap, u_short *) = td->td_halftonehints[1];
break;
case TIFFTAG_COLORMAP:
*va_arg(ap, u_short **) = td->td_colormap[0];
*va_arg(ap, u_short **) = td->td_colormap[1];
*va_arg(ap, u_short **) = td->td_colormap[2];
break;
case TIFFTAG_PREDICTOR:
*va_arg(ap, u_short *) = td->td_predictor;
break;
case TIFFTAG_STRIPOFFSETS:
case TIFFTAG_TILEOFFSETS:
*va_arg(ap, u_long **) = td->td_stripoffset;
break;
case TIFFTAG_STRIPBYTECOUNTS:
case TIFFTAG_TILEBYTECOUNTS:
*va_arg(ap, u_long **) = td->td_stripbytecount;
break;
case TIFFTAG_MATTEING:
*va_arg(ap, u_short *) = td->td_matteing;
break;
case TIFFTAG_EXTRASAMPLES:
*va_arg(ap, u_short *) = td->td_matteing;
*va_arg(ap, u_short **) = &td->td_matteing;
break;
case TIFFTAG_BADFAXLINES:
*va_arg(ap, u_long *) = td->td_badfaxlines;
break;
case TIFFTAG_CLEANFAXDATA:
*va_arg(ap, u_short *) = td->td_cleanfaxdata;
break;
case TIFFTAG_CONSECUTIVEBADFAXLINES:
*va_arg(ap, u_long *) = td->td_badfaxrun;
break;
case TIFFTAG_TILEWIDTH:
*va_arg(ap, u_long *) = td->td_tilewidth;
break;
case TIFFTAG_TILELENGTH:
*va_arg(ap, u_long *) = td->td_tilelength;
break;
case TIFFTAG_TILEDEPTH:
*va_arg(ap, u_long *) = td->td_tiledepth;
break;
case TIFFTAG_DATATYPE:
*va_arg(ap, u_short *) =
(td->td_sampleformat == SAMPLEFORMAT_VOID ?
0 : td->td_sampleformat);
break;
case TIFFTAG_SAMPLEFORMAT:
*va_arg(ap, u_short *) = td->td_sampleformat;
break;
case TIFFTAG_IMAGEDEPTH:
*va_arg(ap, u_long *) = td->td_imagedepth;
break;
#ifdef YCBCR_SUPPORT
case TIFFTAG_YCBCRCOEFFICIENTS:
*va_arg(ap, float **) = td->td_ycbcrcoeffs;
break;
case TIFFTAG_YCBCRPOSITIONING:
*va_arg(ap, u_short *) = td->td_ycbcrpositioning;
break;
case TIFFTAG_YCBCRSUBSAMPLING:
*va_arg(ap, u_short *) = td->td_ycbcrsubsampling[0];
*va_arg(ap, u_short *) = td->td_ycbcrsubsampling[1];
break;
#endif
#ifdef JPEG_SUPPORT
case TIFFTAG_JPEGPROC:
*va_arg(ap, u_short *) = td->td_jpegproc;
break;
case TIFFTAG_JPEGRESTARTINTERVAL:
*va_arg(ap, u_short *) = td->td_jpegrestartinterval;
break;
case TIFFTAG_JPEGQTABLES:
*va_arg(ap, u_char ***) = td->td_qtab;
break;
case TIFFTAG_JPEGDCTABLES:
*va_arg(ap, u_char ***) = td->td_dctab;
break;
case TIFFTAG_JPEGACTABLES:
*va_arg(ap, u_char ***) = td->td_actab;
break;
#endif
#ifdef COLORIMETRY_SUPPORT
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: {
int i, n;
n = (td->td_samplesperpixel - td->td_matteing) > 1 ? 3 : 1;
for (i = 0; i < n; i++)
*va_arg(ap, u_short **) = td->td_transferfunction[i];
break;
}
case TIFFTAG_REFERENCEBLACKWHITE:
*va_arg(ap, float **) = td->td_refblackwhite;
break;
#endif
#ifdef CMYK_SUPPORT
case TIFFTAG_INKSET:
*va_arg(ap, u_short *) = td->td_inkset;
break;
case TIFFTAG_DOTRANGE:
*va_arg(ap, u_short *) = td->td_dotrange[0];
*va_arg(ap, u_short *) = td->td_dotrange[1];
break;
case TIFFTAG_INKNAMES:
*va_arg(ap, char **) = td->td_inknames;
break;
case TIFFTAG_TARGETPRINTER:
*va_arg(ap, char **) = td->td_targetprinter;
break;
#endif
default:
TIFFError("TIFFGetField1",
"Internal error, no value returned for tag \"%s\"",
TIFFFieldWithTag(tag)->field_name);
break;
}
va_end(ap);
}
/*
* Return the value of a field in the
* internal directory structure.
*/
/*VARARGS2*/
DECLARE2V(TIFFGetField, TIFF*, tif, u_int, tag)
{
const TIFFFieldInfo *fip = TIFFFindFieldInfo(tag, TIFF_ANY);
if (fip) {
u_short bit = fip->field_bit;
if (bit != FIELD_IGNORE && TIFFFieldSet(tif, bit)) {
va_list ap;
VA_START(ap, tag);
(void) TIFFGetField1(&tif->tif_dir, tag, ap);
va_end(ap);
return (1);
}
} else
TIFFError("TIFFGetField", "Unknown field, tag 0x%x", tag);
return (0);
}
/*
* Like TIFFGetField, but taking a varargs
* parameter list. This routine is useful
* for building higher-level interfaces on
* top of the library.
*/
int
DECLARE3(TIFFVGetField, TIFF*, tif, u_int, tag, va_list, ap)
{
const TIFFFieldInfo *fip = TIFFFindFieldInfo(tag, TIFF_ANY);
if (fip) {
u_short bit = fip->field_bit;
if (bit != FIELD_IGNORE && TIFFFieldSet(tif, bit)) {
(void) TIFFGetField1(&tif->tif_dir, tag, ap);
return (1);
}
} else
TIFFError("TIFFGetField", "Unknown field, tag 0x%x", tag);
return (0);
}
/*
* Internal interface to TIFFGetField...
*/
int
/*VARARGS2*/
DECLARE2V(_TIFFgetfield, TIFFDirectory*, td, u_int, tag)
{
va_list ap;
VA_START(ap, tag);
(void) TIFFGetField1(td, tag, ap);
va_end(ap);
}
#define CleanupField(member) { \
if (td->member) { \
_TIFFfree((char *)td->member); \
td->member = 0; \
} \
}
/*
* Release storage associated with a directory.
*/
void
DECLARE1(TIFFFreeDirectory, TIFF*, tif)
{
register TIFFDirectory *td = &tif->tif_dir;
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_software);
CleanupField(td_pagename);
#ifdef YCBCR_SUPPORT
CleanupField(td_ycbcrcoeffs);
#endif
#ifdef JPEG_SUPPORT
CleanupField(td_qtab);
CleanupField(td_dctab);
CleanupField(td_actab);
#endif
#ifdef CMYK_SUPPORT
CleanupField(td_inknames);
CleanupField(td_targetprinter);
#endif
#ifdef COLORIMETRY_SUPPORT
CleanupField(td_whitepoint);
CleanupField(td_primarychromas);
CleanupField(td_refblackwhite);
CleanupField(td_transferfunction[0]);
CleanupField(td_transferfunction[1]);
CleanupField(td_transferfunction[2]);
#endif
CleanupField(td_stripoffset);
CleanupField(td_stripbytecount);
}
#undef CleanupField
/*
* Setup a default directory structure.
*/
int
DECLARE1(TIFFDefaultDirectory, TIFF*, tif)
{
register TIFFDirectory *td = &tif->tif_dir;
memset(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_predictor = 1;
td->td_rowsperstrip = 0xffffffff;
td->td_tilewidth = 0xffffffff;
td->td_tilelength = 0xffffffff;
td->td_tiledepth = 1;
td->td_resolutionunit = RESUNIT_INCH;
td->td_sampleformat = SAMPLEFORMAT_VOID;
td->td_imagedepth = 1;
#ifdef YCBCR_SUPPORT
td->td_ycbcrsubsampling[0] = 2;
td->td_ycbcrsubsampling[1] = 2;
td->td_ycbcrpositioning = YCBCRPOSITION_CENTERED;
#endif
#ifdef CMYK_SUPPORT
td->td_inkset = INKSET_CMYK;
#endif
(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;
return (1);
}
/*
* Set the n-th directory as the current directory.
* NB: Directories are numbered starting at 0.
*/
int
DECLARE2(TIFFSetDirectory, TIFF*, tif, int, dirn)
{
static const char module[] = "TIFFSetDirectory";
u_short dircount;
long nextdir;
int n;
nextdir = tif->tif_header.tiff_diroff;
for (n = dirn; n > 0 && nextdir != 0; n--) {
if (!SeekOK(tif, nextdir) ||
!ReadOK(tif, &dircount, sizeof (dircount))) {
TIFFError(module, "%s: Error fetching directory count",
tif->tif_name);
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
TIFFSeekFile(tif, dircount*sizeof (TIFFDirEntry), L_INCR);
if (!ReadOK(tif, &nextdir, sizeof (nextdir))) {
TIFFError(module, "%s: Error fetching directory link",
tif->tif_name);
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong((u_long *)&nextdir);
}
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;
return (TIFFReadDirectory(tif));
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.