XFA: Upgrade to libtiff 4.0.6.
R=jun_fang@foxitsoftware.com, tsepez@chromium.org
Review URL: https://codereview.chromium.org/1563103002 .
diff --git a/third_party/libtiff/tif_dir.c b/third_party/libtiff/tif_dir.c
new file mode 100644
index 0000000..73212c0
--- /dev/null
+++ b/third_party/libtiff/tif_dir.c
@@ -0,0 +1,1705 @@
+/* $Id: tif_dir.c,v 1.121 2015-05-31 23:11:43 bfriesen 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) {
+ tmsize_t bytes = (tmsize_t)(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, uint32 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, uint32 n)
+ { setByteArray((void**) cpp, (void*) cp, n, 1); }
+void _TIFFsetShortArray(uint16** wpp, uint16* wp, uint32 n)
+ { setByteArray((void**) wpp, (void*) wp, n, sizeof (uint16)); }
+void _TIFFsetLongArray(uint32** lpp, uint32* lp, uint32 n)
+ { setByteArray((void**) lpp, (void*) lp, n, sizeof (uint32)); }
+void _TIFFsetLong8Array(uint64** lpp, uint64* lp, uint32 n)
+ { setByteArray((void**) lpp, (void*) lp, n, sizeof (uint64)); }
+void _TIFFsetFloatArray(float** fpp, float* fp, uint32 n)
+ { setByteArray((void**) fpp, (void*) fp, n, sizeof (float)); }
+void _TIFFsetDoubleArray(double** dpp, double* dp, uint32 n)
+ { setByteArray((void**) dpp, (void*) dp, n, sizeof (double)); }
+
+static void
+setDoubleArrayOneValue(double** vpp, double value, size_t nmemb)
+{
+ if (*vpp)
+ _TIFFfree(*vpp);
+ *vpp = _TIFFmalloc(nmemb*sizeof(double));
+ if (*vpp)
+ {
+ while (nmemb--)
+ ((double*)*vpp)[nmemb] = value;
+ }
+}
+
+/*
+ * Install extra samples information.
+ */
+static int
+setExtraSamples(TIFFDirectory* td, va_list ap, uint32* v)
+{
+/* XXX: Unassociated alpha data == 999 is a known Corel Draw bug, see below */
+#define EXTRASAMPLE_COREL_UNASSALPHA 999
+
+ uint16* va;
+ uint32 i;
+
+ *v = (uint16) va_arg(ap, uint16_vap);
+ 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) {
+ /*
+ * XXX: Corel Draw is known to produce incorrect
+ * ExtraSamples tags which must be patched here if we
+ * want to be able to open some of the damaged TIFF
+ * files:
+ */
+ if (va[i] == EXTRASAMPLE_COREL_UNASSALPHA)
+ va[i] = EXTRASAMPLE_UNASSALPHA;
+ else
+ return 0;
+ }
+ }
+ td->td_extrasamples = (uint16) *v;
+ _TIFFsetShortArray(&td->td_sampleinfo, va, td->td_extrasamples);
+ return 1;
+
+#undef EXTRASAMPLE_COREL_UNASSALPHA
+}
+
+/*
+ * Confirm we have "samplesperpixel" ink names separated by \0. Returns
+ * zero if the ink names are not as expected.
+ */
+static uint32
+checkInkNamesString(TIFF* tif, uint32 slen, const char* s)
+{
+ TIFFDirectory* td = &tif->tif_dir;
+ uint16 i = td->td_samplesperpixel;
+
+ if (slen > 0) {
+ const char* ep = s+slen;
+ const char* cp = s;
+ for (; i > 0; i--) {
+ for (; cp < ep && *cp != '\0'; cp++) {}
+ if (cp >= ep)
+ goto bad;
+ cp++; /* skip \0 */
+ }
+ return ((uint32)(cp-s));
+ }
+bad:
+ TIFFErrorExt(tif->tif_clientdata, "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, uint32 tag, va_list ap)
+{
+ static const char module[] = "_TIFFVSetField";
+
+ TIFFDirectory* td = &tif->tif_dir;
+ int status = 1;
+ uint32 v32, i, v;
+ double dblval;
+ char* s;
+ const TIFFField *fip = TIFFFindField(tif, tag, TIFF_ANY);
+ uint32 standard_tag = tag;
+ if( fip == NULL ) /* cannot happen since OkToChangeTag() already checks it */
+ return 0;
+ /*
+ * We want to force the custom code to be used for custom
+ * fields even if the tag happens to match a well known
+ * one - important for reinterpreted handling of standard
+ * tag values in custom directories (ie. EXIF)
+ */
+ if (fip->field_bit == FIELD_CUSTOM) {
+ standard_tag = 0;
+ }
+
+ switch (standard_tag) {
+ case TIFFTAG_SUBFILETYPE:
+ td->td_subfiletype = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_IMAGEWIDTH:
+ td->td_imagewidth = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_IMAGELENGTH:
+ td->td_imagelength = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_BITSPERSAMPLE:
+ td->td_bitspersample = (uint16) va_arg(ap, uint16_vap);
+ /*
+ * 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 == 8)
+ tif->tif_postdecode = _TIFFNoPostDecode;
+ else if (td->td_bitspersample == 16)
+ tif->tif_postdecode = _TIFFSwab16BitData;
+ else if (td->td_bitspersample == 24)
+ tif->tif_postdecode = _TIFFSwab24BitData;
+ else if (td->td_bitspersample == 32)
+ tif->tif_postdecode = _TIFFSwab32BitData;
+ else if (td->td_bitspersample == 64)
+ tif->tif_postdecode = _TIFFSwab64BitData;
+ else if (td->td_bitspersample == 128) /* two 64's */
+ tif->tif_postdecode = _TIFFSwab64BitData;
+ }
+ break;
+ case TIFFTAG_COMPRESSION:
+ v = (uint16) va_arg(ap, uint16_vap);
+ /*
+ * 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 ((uint32)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, uint16_vap);
+ break;
+ case TIFFTAG_THRESHHOLDING:
+ td->td_threshholding = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_FILLORDER:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v != FILLORDER_LSB2MSB && v != FILLORDER_MSB2LSB)
+ goto badvalue;
+ td->td_fillorder = (uint16) v;
+ break;
+ case TIFFTAG_ORIENTATION:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v < ORIENTATION_TOPLEFT || ORIENTATION_LEFTBOT < v)
+ goto badvalue;
+ else
+ td->td_orientation = (uint16) v;
+ break;
+ case TIFFTAG_SAMPLESPERPIXEL:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v == 0)
+ goto badvalue;
+ td->td_samplesperpixel = (uint16) v;
+ break;
+ case TIFFTAG_ROWSPERSTRIP:
+ v32 = (uint32) 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, uint16_vap);
+ break;
+ case TIFFTAG_MAXSAMPLEVALUE:
+ td->td_maxsamplevalue = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_SMINSAMPLEVALUE:
+ if (tif->tif_flags & TIFF_PERSAMPLE)
+ _TIFFsetDoubleArray(&td->td_sminsamplevalue, va_arg(ap, double*), td->td_samplesperpixel);
+ else
+ setDoubleArrayOneValue(&td->td_sminsamplevalue, va_arg(ap, double), td->td_samplesperpixel);
+ break;
+ case TIFFTAG_SMAXSAMPLEVALUE:
+ if (tif->tif_flags & TIFF_PERSAMPLE)
+ _TIFFsetDoubleArray(&td->td_smaxsamplevalue, va_arg(ap, double*), td->td_samplesperpixel);
+ else
+ setDoubleArrayOneValue(&td->td_smaxsamplevalue, va_arg(ap, double), td->td_samplesperpixel);
+ break;
+ case TIFFTAG_XRESOLUTION:
+ dblval = va_arg(ap, double);
+ if( dblval < 0 )
+ goto badvaluedouble;
+ td->td_xresolution = (float) dblval;
+ break;
+ case TIFFTAG_YRESOLUTION:
+ dblval = va_arg(ap, double);
+ if( dblval < 0 )
+ goto badvaluedouble;
+ td->td_yresolution = (float) dblval;
+ break;
+ case TIFFTAG_PLANARCONFIG:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if (v != PLANARCONFIG_CONTIG && v != PLANARCONFIG_SEPARATE)
+ goto badvalue;
+ td->td_planarconfig = (uint16) v;
+ break;
+ case TIFFTAG_XPOSITION:
+ td->td_xposition = (float) va_arg(ap, double);
+ break;
+ case TIFFTAG_YPOSITION:
+ td->td_yposition = (float) va_arg(ap, double);
+ break;
+ case TIFFTAG_RESOLUTIONUNIT:
+ v = (uint16) va_arg(ap, uint16_vap);
+ 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, uint16_vap);
+ td->td_pagenumber[1] = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_HALFTONEHINTS:
+ td->td_halftonehints[0] = (uint16) va_arg(ap, uint16_vap);
+ td->td_halftonehints[1] = (uint16) va_arg(ap, uint16_vap);
+ 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, uint16_vap)) != 0);
+ if (td->td_extrasamples) {
+ uint16 sv = EXTRASAMPLE_ASSOCALPHA;
+ _TIFFsetShortArray(&td->td_sampleinfo, &sv, 1);
+ }
+ break;
+ case TIFFTAG_TILEWIDTH:
+ v32 = (uint32) va_arg(ap, uint32);
+ if (v32 % 16) {
+ if (tif->tif_mode != O_RDONLY)
+ goto badvalue32;
+ TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+ "Nonstandard tile width %d, convert file", v32);
+ }
+ td->td_tilewidth = v32;
+ tif->tif_flags |= TIFF_ISTILED;
+ break;
+ case TIFFTAG_TILELENGTH:
+ v32 = (uint32) va_arg(ap, uint32);
+ if (v32 % 16) {
+ if (tif->tif_mode != O_RDONLY)
+ goto badvalue32;
+ TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+ "Nonstandard tile length %d, convert file", v32);
+ }
+ td->td_tilelength = v32;
+ tif->tif_flags |= TIFF_ISTILED;
+ break;
+ case TIFFTAG_TILEDEPTH:
+ v32 = (uint32) va_arg(ap, uint32);
+ if (v32 == 0)
+ goto badvalue32;
+ td->td_tiledepth = v32;
+ break;
+ case TIFFTAG_DATATYPE:
+ v = (uint16) va_arg(ap, uint16_vap);
+ 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 = (uint16) va_arg(ap, uint16_vap);
+ 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;
+ break;
+ case TIFFTAG_IMAGEDEPTH:
+ td->td_imagedepth = (uint32) va_arg(ap, uint32);
+ break;
+ case TIFFTAG_SUBIFD:
+ if ((tif->tif_flags & TIFF_INSUBIFD) == 0) {
+ td->td_nsubifd = (uint16) va_arg(ap, uint16_vap);
+ _TIFFsetLong8Array(&td->td_subifd, (uint64*) va_arg(ap, uint64*),
+ (long) td->td_nsubifd);
+ } else {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Sorry, cannot nest SubIFDs",
+ tif->tif_name);
+ status = 0;
+ }
+ break;
+ case TIFFTAG_YCBCRPOSITIONING:
+ td->td_ycbcrpositioning = (uint16) va_arg(ap, uint16_vap);
+ break;
+ case TIFFTAG_YCBCRSUBSAMPLING:
+ td->td_ycbcrsubsampling[0] = (uint16) va_arg(ap, uint16_vap);
+ td->td_ycbcrsubsampling[1] = (uint16) va_arg(ap, uint16_vap);
+ 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_INKNAMES:
+ v = (uint16) va_arg(ap, uint16_vap);
+ s = va_arg(ap, char*);
+ v = checkInkNamesString(tif, v, s);
+ status = v > 0;
+ if( v > 0 ) {
+ _TIFFsetNString(&td->td_inknames, s, v);
+ td->td_inknameslen = v;
+ }
+ break;
+ case TIFFTAG_PERSAMPLE:
+ v = (uint16) va_arg(ap, uint16_vap);
+ if( v == PERSAMPLE_MULTI )
+ tif->tif_flags |= TIFF_PERSAMPLE;
+ else
+ tif->tif_flags &= ~TIFF_PERSAMPLE;
+ break;
+ default: {
+ 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->field_bit != FIELD_CUSTOM) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Invalid %stag \"%s\" (not supported by codec)",
+ tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "",
+ fip->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->field_tag == tag) {
+ tv = td->td_customValues + iCustom;
+ if (tv->value != NULL) {
+ _TIFFfree(tv->value);
+ tv->value = NULL;
+ }
+ 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) {
+ TIFFErrorExt(tif->tif_clientdata, 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.
+ */
+ tv_size = _TIFFDataSize(fip->field_type);
+ if (tv_size == 0) {
+ status = 0;
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Bad field type %d for \"%s\"",
+ tif->tif_name, fip->field_type,
+ fip->field_name);
+ goto end;
+ }
+
+ if (fip->field_type == TIFF_ASCII)
+ {
+ uint32 ma;
+ char* mb;
+ if (fip->field_passcount)
+ {
+ assert(fip->field_writecount==TIFF_VARIABLE2);
+ ma=(uint32)va_arg(ap,uint32);
+ mb=(char*)va_arg(ap,char*);
+ }
+ else
+ {
+ mb=(char*)va_arg(ap,char*);
+ ma=(uint32)(strlen(mb)+1);
+ }
+ tv->count=ma;
+ setByteArray(&tv->value,mb,ma,1);
+ }
+ else
+ {
+ if (fip->field_passcount) {
+ if (fip->field_writecount == TIFF_VARIABLE2)
+ tv->count = (uint32) va_arg(ap, uint32);
+ else
+ tv->count = (int) va_arg(ap, int);
+ } else if (fip->field_writecount == TIFF_VARIABLE
+ || fip->field_writecount == TIFF_VARIABLE2)
+ tv->count = 1;
+ else if (fip->field_writecount == TIFF_SPP)
+ tv->count = td->td_samplesperpixel;
+ else
+ tv->count = fip->field_writecount;
+
+ if (tv->count == 0) {
+ status = 0;
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Null count for \"%s\" (type "
+ "%d, writecount %d, passcount %d)",
+ tif->tif_name,
+ fip->field_name,
+ fip->field_type,
+ fip->field_writecount,
+ fip->field_passcount);
+ goto end;
+ }
+
+ tv->value = _TIFFCheckMalloc(tif, tv->count, tv_size,
+ "custom tag binary object");
+ if (!tv->value) {
+ status = 0;
+ goto end;
+ }
+
+ if (fip->field_tag == TIFFTAG_DOTRANGE
+ && strcmp(fip->field_name,"DotRange") == 0) {
+ /* TODO: This is an evil exception and should not have been
+ handled this way ... likely best if we move it into
+ the directory structure with an explicit field in
+ libtiff 4.1 and assign it a FIELD_ value */
+ uint16 v[2];
+ v[0] = (uint16)va_arg(ap, int);
+ v[1] = (uint16)va_arg(ap, int);
+ _TIFFmemcpy(tv->value, &v, 4);
+ }
+
+ else if (fip->field_passcount
+ || fip->field_writecount == TIFF_VARIABLE
+ || fip->field_writecount == TIFF_VARIABLE2
+ || fip->field_writecount == TIFF_SPP
+ || tv->count > 1) {
+ _TIFFmemcpy(tv->value, va_arg(ap, void *),
+ tv->count * tv_size);
+ } else {
+ char *val = (char *)tv->value;
+ assert( tv->count == 1 );
+
+ switch (fip->field_type) {
+ case TIFF_BYTE:
+ case TIFF_UNDEFINED:
+ {
+ uint8 v = (uint8)va_arg(ap, int);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8 v = (int8)va_arg(ap, int);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SHORT:
+ {
+ uint16 v = (uint16)va_arg(ap, int);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16 v = (int16)va_arg(ap, int);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_LONG:
+ case TIFF_IFD:
+ {
+ uint32 v = va_arg(ap, uint32);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32 v = va_arg(ap, int32);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_LONG8:
+ case TIFF_IFD8:
+ {
+ uint64 v = va_arg(ap, uint64);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_SLONG8:
+ {
+ int64 v = va_arg(ap, int64);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ {
+ float v = (float)va_arg(ap, double);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ case TIFF_DOUBLE:
+ {
+ double v = va_arg(ap, double);
+ _TIFFmemcpy(val, &v, tv_size);
+ }
+ break;
+ default:
+ _TIFFmemset(val, 0, tv_size);
+ status = 0;
+ break;
+ }
+ }
+ }
+ }
+ }
+ if (status) {
+ const TIFFField* fip=TIFFFieldWithTag(tif,tag);
+ if (fip)
+ TIFFSetFieldBit(tif, fip->field_bit);
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+ }
+
+end:
+ va_end(ap);
+ return (status);
+badvalue:
+ {
+ const TIFFField* fip=TIFFFieldWithTag(tif,tag);
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Bad value %u for \"%s\" tag",
+ tif->tif_name, v,
+ fip ? fip->field_name : "Unknown");
+ va_end(ap);
+ }
+ return (0);
+badvalue32:
+ {
+ const TIFFField* fip=TIFFFieldWithTag(tif,tag);
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Bad value %u for \"%s\" tag",
+ tif->tif_name, v32,
+ fip ? fip->field_name : "Unknown");
+ va_end(ap);
+ }
+ return (0);
+badvaluedouble:
+ {
+ const TIFFField* fip=TIFFFieldWithTag(tif,tag);
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Bad value %f for \"%s\" tag",
+ tif->tif_name, dblval,
+ fip ? fip->field_name : "Unknown");
+ 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, uint32 tag)
+{
+ const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);
+ if (!fip) { /* unknown tag */
+ TIFFErrorExt(tif->tif_clientdata, "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.
+ */
+ TIFFErrorExt(tif->tif_clientdata, "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, uint32 tag, ...)
+{
+ va_list ap;
+ int status;
+
+ va_start(ap, tag);
+ status = TIFFVSetField(tif, tag, ap);
+ va_end(ap);
+ return (status);
+}
+
+/*
+ * Clear the contents of the field in the internal structure.
+ */
+int
+TIFFUnsetField(TIFF* tif, uint32 tag)
+{
+ const TIFFField *fip = TIFFFieldWithTag(tif, tag);
+ TIFFDirectory* td = &tif->tif_dir;
+
+ if( !fip )
+ return 0;
+
+ if( fip->field_bit != FIELD_CUSTOM )
+ TIFFClrFieldBit(tif, fip->field_bit);
+ else
+ {
+ TIFFTagValue *tv = NULL;
+ int i;
+
+ for (i = 0; i < td->td_customValueCount; i++) {
+
+ tv = td->td_customValues + i;
+ if( tv->info->field_tag == tag )
+ break;
+ }
+
+ if( i < td->td_customValueCount )
+ {
+ _TIFFfree(tv->value);
+ for( ; i < td->td_customValueCount-1; i++) {
+ td->td_customValues[i] = td->td_customValues[i+1];
+ }
+ td->td_customValueCount--;
+ }
+ }
+
+ tif->tif_flags |= TIFF_DIRTYDIRECT;
+
+ return (1);
+}
+
+/*
+ * 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, uint32 tag, va_list ap)
+{
+ return OkToChangeTag(tif, tag) ?
+ (*tif->tif_tagmethods.vsetfield)(tif, tag, ap) : 0;
+}
+
+static int
+_TIFFVGetField(TIFF* tif, uint32 tag, va_list ap)
+{
+ TIFFDirectory* td = &tif->tif_dir;
+ int ret_val = 1;
+ uint32 standard_tag = tag;
+ const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);
+ if( fip == NULL ) /* cannot happen since TIFFGetField() already checks it */
+ return 0;
+
+ /*
+ * We want to force the custom code to be used for custom
+ * fields even if the tag happens to match a well known
+ * one - important for reinterpreted handling of standard
+ * tag values in custom directories (ie. EXIF)
+ */
+ if (fip->field_bit == FIELD_CUSTOM) {
+ standard_tag = 0;
+ }
+
+ switch (standard_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_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:
+ if (tif->tif_flags & TIFF_PERSAMPLE)
+ *va_arg(ap, double**) = td->td_sminsamplevalue;
+ else
+ {
+ /* libtiff historially treats this as a single value. */
+ uint16 i;
+ double v = td->td_sminsamplevalue[0];
+ for (i=1; i < td->td_samplesperpixel; ++i)
+ if( td->td_sminsamplevalue[i] < v )
+ v = td->td_sminsamplevalue[i];
+ *va_arg(ap, double*) = v;
+ }
+ break;
+ case TIFFTAG_SMAXSAMPLEVALUE:
+ if (tif->tif_flags & TIFF_PERSAMPLE)
+ *va_arg(ap, double**) = td->td_smaxsamplevalue;
+ else
+ {
+ /* libtiff historially treats this as a single value. */
+ uint16 i;
+ double v = td->td_smaxsamplevalue[0];
+ for (i=1; i < td->td_samplesperpixel; ++i)
+ if( td->td_smaxsamplevalue[i] > v )
+ v = td->td_smaxsamplevalue[i];
+ *va_arg(ap, double*) = v;
+ }
+ 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_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:
+ _TIFFFillStriles( tif );
+ *va_arg(ap, uint64**) = td->td_stripoffset;
+ break;
+ case TIFFTAG_STRIPBYTECOUNTS:
+ case TIFFTAG_TILEBYTECOUNTS:
+ _TIFFFillStriles( tif );
+ *va_arg(ap, uint64**) = 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_SUBIFD:
+ *va_arg(ap, uint16*) = td->td_nsubifd;
+ *va_arg(ap, uint64**) = td->td_subifd;
+ 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_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_INKNAMES:
+ *va_arg(ap, char**) = td->td_inknames;
+ break;
+ default:
+ {
+ 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->field_bit != FIELD_CUSTOM )
+ {
+ TIFFErrorExt(tif->tif_clientdata, "_TIFFVGetField",
+ "%s: Invalid %stag \"%s\" "
+ "(not supported by codec)",
+ tif->tif_name,
+ isPseudoTag(tag) ? "pseudo-" : "",
+ fip->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;
+ } else if (fip->field_tag == TIFFTAG_DOTRANGE
+ && strcmp(fip->field_name,"DotRange") == 0) {
+ /* TODO: This is an evil exception and should not have been
+ handled this way ... likely best if we move it into
+ the directory structure with an explicit field in
+ libtiff 4.1 and assign it a FIELD_ value */
+ *va_arg(ap, uint16*) = ((uint16 *)tv->value)[0];
+ *va_arg(ap, uint16*) = ((uint16 *)tv->value)[1];
+ ret_val = 1;
+ } else {
+ if (fip->field_type == TIFF_ASCII
+ || fip->field_readcount == TIFF_VARIABLE
+ || fip->field_readcount == TIFF_VARIABLE2
+ || fip->field_readcount == TIFF_SPP
+ || tv->count > 1) {
+ *va_arg(ap, void **) = tv->value;
+ ret_val = 1;
+ } else {
+ char *val = (char *)tv->value;
+ assert( tv->count == 1 );
+ switch (fip->field_type) {
+ case TIFF_BYTE:
+ case TIFF_UNDEFINED:
+ *va_arg(ap, uint8*) =
+ *(uint8 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SBYTE:
+ *va_arg(ap, int8*) =
+ *(int8 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SHORT:
+ *va_arg(ap, uint16*) =
+ *(uint16 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SSHORT:
+ *va_arg(ap, int16*) =
+ *(int16 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_LONG:
+ case TIFF_IFD:
+ *va_arg(ap, uint32*) =
+ *(uint32 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SLONG:
+ *va_arg(ap, int32*) =
+ *(int32 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_LONG8:
+ case TIFF_IFD8:
+ *va_arg(ap, uint64*) =
+ *(uint64 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_SLONG8:
+ *va_arg(ap, int64*) =
+ *(int64 *)val;
+ ret_val = 1;
+ break;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ case TIFF_FLOAT:
+ *va_arg(ap, float*) =
+ *(float *)val;
+ ret_val = 1;
+ break;
+ case TIFF_DOUBLE:
+ *va_arg(ap, double*) =
+ *(double *)val;
+ ret_val = 1;
+ break;
+ default:
+ ret_val = 0;
+ break;
+ }
+ }
+ }
+ break;
+ }
+ }
+ }
+ return(ret_val);
+}
+
+/*
+ * Return the value of a field in the
+ * internal directory structure.
+ */
+int
+TIFFGetField(TIFF* tif, uint32 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, uint32 tag, va_list ap)
+{
+ const TIFFField* fip = TIFFFindField(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;
+
+ _TIFFmemset(td->td_fieldsset, 0, FIELD_SETLONGS);
+ CleanupField(td_sminsamplevalue);
+ CleanupField(td_smaxsamplevalue);
+ CleanupField(td_colormap[0]);
+ CleanupField(td_colormap[1]);
+ CleanupField(td_colormap[2]);
+ CleanupField(td_sampleinfo);
+ CleanupField(td_subifd);
+ CleanupField(td_inknames);
+ CleanupField(td_refblackwhite);
+ CleanupField(td_transferfunction[0]);
+ CleanupField(td_transferfunction[1]);
+ CleanupField(td_transferfunction[2]);
+ CleanupField(td_stripoffset);
+ CleanupField(td_stripbytecount);
+ TIFFClrFieldBit(tif, FIELD_YCBCRSUBSAMPLING);
+ TIFFClrFieldBit(tif, FIELD_YCBCRPOSITIONING);
+
+ /* 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);
+
+#if defined(DEFER_STRILE_LOAD)
+ _TIFFmemset( &(td->td_stripoffset_entry), 0, sizeof(TIFFDirEntry));
+ _TIFFmemset( &(td->td_stripbytecount_entry), 0, sizeof(TIFFDirEntry));
+#endif
+}
+#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 = (uint32) -1;
+
+ return 0;
+}
+
+int
+TIFFCreateCustomDirectory(TIFF* tif, const TIFFFieldArray* infoarray)
+{
+ TIFFDefaultDirectory(tif);
+
+ /*
+ * Reset the field definitions to match the application provided list.
+ * Hopefully TIFFDefaultDirectory() won't have done anything irreversable
+ * based on it's assumption this is an image directory.
+ */
+ _TIFFSetupFields(tif, infoarray);
+
+ tif->tif_diroff = 0;
+ tif->tif_nextdiroff = 0;
+ tif->tif_curoff = 0;
+ tif->tif_row = (uint32) -1;
+ tif->tif_curstrip = (uint32) -1;
+
+ return 0;
+}
+
+int
+TIFFCreateEXIFDirectory(TIFF* tif)
+{
+ const TIFFFieldArray* exifFieldArray;
+ exifFieldArray = _TIFFGetExifFields();
+ return TIFFCreateCustomDirectory(tif, exifFieldArray);
+}
+
+/*
+ * Setup a default directory structure.
+ */
+int
+TIFFDefaultDirectory(TIFF* tif)
+{
+ register TIFFDirectory* td = &tif->tif_dir;
+ const TIFFFieldArray* tiffFieldArray;
+
+ tiffFieldArray = _TIFFGetFields();
+ _TIFFSetupFields(tif, tiffFieldArray);
+
+ _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;
+ 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,
+ * but do some prior cleanup first. (http://trac.osgeo.org/gdal/ticket/5054)
+ */
+ if (tif->tif_nfieldscompat > 0) {
+ uint32 i;
+
+ for (i = 0; i < tif->tif_nfieldscompat; i++) {
+ if (tif->tif_fieldscompat[i].allocated_size)
+ _TIFFfree(tif->tif_fieldscompat[i].fields);
+ }
+ _TIFFfree(tif->tif_fieldscompat);
+ tif->tif_nfieldscompat = 0;
+ tif->tif_fieldscompat = NULL;
+ }
+ 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, uint64* nextdir, uint64* off)
+{
+ static const char module[] = "TIFFAdvanceDirectory";
+ if (isMapped(tif))
+ {
+ uint64 poff=*nextdir;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ tmsize_t poffa,poffb,poffc,poffd;
+ uint16 dircount;
+ uint32 nextdir32;
+ poffa=(tmsize_t)poff;
+ poffb=poffa+sizeof(uint16);
+ if (((uint64)poffa!=poff)||(poffb<poffa)||(poffb<(tmsize_t)sizeof(uint16))||(poffb>tif->tif_size))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory count");
+ *nextdir=0;
+ return(0);
+ }
+ _TIFFmemcpy(&dircount,tif->tif_base+poffa,sizeof(uint16));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabShort(&dircount);
+ poffc=poffb+dircount*12;
+ poffd=poffc+sizeof(uint32);
+ if ((poffc<poffb)||(poffc<dircount*12)||(poffd<poffc)||(poffd<(tmsize_t)sizeof(uint32))||(poffd>tif->tif_size))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory link");
+ return(0);
+ }
+ if (off!=NULL)
+ *off=(uint64)poffc;
+ _TIFFmemcpy(&nextdir32,tif->tif_base+poffc,sizeof(uint32));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong(&nextdir32);
+ *nextdir=nextdir32;
+ }
+ else
+ {
+ tmsize_t poffa,poffb,poffc,poffd;
+ uint64 dircount64;
+ uint16 dircount16;
+ poffa=(tmsize_t)poff;
+ poffb=poffa+sizeof(uint64);
+ if (((uint64)poffa!=poff)||(poffb<poffa)||(poffb<(tmsize_t)sizeof(uint64))||(poffb>tif->tif_size))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory count");
+ return(0);
+ }
+ _TIFFmemcpy(&dircount64,tif->tif_base+poffa,sizeof(uint64));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(&dircount64);
+ if (dircount64>0xFFFF)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Sanity check on directory count failed");
+ return(0);
+ }
+ dircount16=(uint16)dircount64;
+ poffc=poffb+dircount16*20;
+ poffd=poffc+sizeof(uint64);
+ if ((poffc<poffb)||(poffc<dircount16*20)||(poffd<poffc)||(poffd<(tmsize_t)sizeof(uint64))||(poffd>tif->tif_size))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory link");
+ return(0);
+ }
+ if (off!=NULL)
+ *off=(uint64)poffc;
+ _TIFFmemcpy(nextdir,tif->tif_base+poffc,sizeof(uint64));
+ if (tif->tif_flags&TIFF_SWAB)
+ TIFFSwabLong8(nextdir);
+ }
+ return(1);
+ }
+ else
+ {
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ uint16 dircount;
+ uint32 nextdir32;
+ if (!SeekOK(tif, *nextdir) ||
+ !ReadOK(tif, &dircount, sizeof (uint16))) {
+ TIFFErrorExt(tif->tif_clientdata, 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*12, SEEK_CUR);
+ else
+ (void) TIFFSeekFile(tif,
+ dircount*12, SEEK_CUR);
+ if (!ReadOK(tif, &nextdir32, sizeof (uint32))) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory link",
+ tif->tif_name);
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&nextdir32);
+ *nextdir=nextdir32;
+ }
+ else
+ {
+ uint64 dircount64;
+ uint16 dircount16;
+ if (!SeekOK(tif, *nextdir) ||
+ !ReadOK(tif, &dircount64, sizeof (uint64))) {
+ TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory count",
+ tif->tif_name);
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&dircount64);
+ if (dircount64>0xFFFF)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory count");
+ return(0);
+ }
+ dircount16 = (uint16)dircount64;
+ if (off != NULL)
+ *off = TIFFSeekFile(tif,
+ dircount16*20, SEEK_CUR);
+ else
+ (void) TIFFSeekFile(tif,
+ dircount16*20, SEEK_CUR);
+ if (!ReadOK(tif, nextdir, sizeof (uint64))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Error fetching directory link",
+ tif->tif_name);
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(nextdir);
+ }
+ return (1);
+ }
+}
+
+/*
+ * Count the number of directories in a file.
+ */
+uint16
+TIFFNumberOfDirectories(TIFF* tif)
+{
+ static const char module[] = "TIFFNumberOfDirectories";
+ uint64 nextdir;
+ uint16 n;
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ nextdir = tif->tif_header.classic.tiff_diroff;
+ else
+ nextdir = tif->tif_header.big.tiff_diroff;
+ n = 0;
+ while (nextdir != 0 && TIFFAdvanceDirectory(tif, &nextdir, NULL))
+ {
+ if (n != 65535) {
+ ++n;
+ }
+ else
+ {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Directory count exceeded 65535 limit,"
+ " giving up on counting.");
+ return (65535);
+ }
+ }
+ return (n);
+}
+
+/*
+ * Set the n-th directory as the current directory.
+ * NB: Directories are numbered starting at 0.
+ */
+int
+TIFFSetDirectory(TIFF* tif, uint16 dirn)
+{
+ uint64 nextdir;
+ uint16 n;
+
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ nextdir = tif->tif_header.classic.tiff_diroff;
+ else
+ nextdir = tif->tif_header.big.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, uint64 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.
+ */
+uint64
+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, uint16 dirn)
+{
+ static const char module[] = "TIFFUnlinkDirectory";
+ uint64 nextdir;
+ uint64 off;
+ uint16 n;
+
+ if (tif->tif_mode == O_RDONLY) {
+ TIFFErrorExt(tif->tif_clientdata, 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.
+ */
+ if (!(tif->tif_flags&TIFF_BIGTIFF))
+ {
+ nextdir = tif->tif_header.classic.tiff_diroff;
+ off = 4;
+ }
+ else
+ {
+ nextdir = tif->tif_header.big.tiff_diroff;
+ off = 8;
+ }
+ for (n = dirn-1; n > 0; n--) {
+ if (nextdir == 0) {
+ TIFFErrorExt(tif->tif_clientdata, 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_BIGTIFF))
+ {
+ uint32 nextdir32;
+ nextdir32=(uint32)nextdir;
+ assert((uint64)nextdir32==nextdir);
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&nextdir32);
+ if (!WriteOK(tif, &nextdir32, sizeof (uint32))) {
+ TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
+ return (0);
+ }
+ }
+ else
+ {
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong8(&nextdir);
+ if (!WriteOK(tif, &nextdir, sizeof (uint64))) {
+ TIFFErrorExt(tif->tif_clientdata, 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_rawdataoff = 0;
+ tif->tif_rawdataloaded = 0;
+ }
+ tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP|TIFF_POSTENCODE|TIFF_BUF4WRITE);
+ 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 = (uint32) -1;
+ return (1);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
