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- #ifndef lint
- static char rcsid[] = "$Header: /usr/people/sam/tiff/libtiff/RCS/tif_dir.c,v 1.86 91/08/19 14:40:43 sam Exp $";
- #endif
-
- /*
- * Copyright (c) 1988, 1989, 1990, 1991 Sam Leffler
- * Copyright (c) 1991 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 Support Routines.
- *
- * 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"
-
- #ifndef TRUE
- #define TRUE 1
- #define FALSE 0
- #endif
- #define TIFF_ANY TIFF_NOTYPE
-
- #define NITEMS(a) (sizeof (a) / sizeof (a[0]))
-
- #define FieldSet(fields, f) (fields[f/32] & (1L<<(f&0x1f)))
- #define ResetFieldBit(fields, f) (fields[f/32] &= ~(1L<<(f&0x1f)))
-
- #define TIFFExtractData(tif, type, v) \
- ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
- ((v) >> (tif)->tif_typeshift[type]) & (tif)->tif_typemask[type] : \
- (v) & (tif)->tif_typemask[type])
- #define TIFFInsertData(tif, type, v) \
- ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
- ((v) & (tif)->tif_typemask[type]) << (tif)->tif_typeshift[type] : \
- (v) & (tif)->tif_typemask[type])
-
- typedef struct {
- u_short field_tag; /* field's tag */
- short field_count; /* write count (-1 for unknown) */
- TIFFDataType field_type; /* type of associated data */
- u_short field_bit; /* bit in fieldsset bit vector */
- u_short field_oktochange; /* if true, can change while writing */
- char *field_name; /* ASCII name */
- } TIFFFieldInfo;
-
- /*
- * NB: THIS ARRAY IS ASSUMED TO BE SORTED BY TAG.
- * Also, if a tag can have both LONG and SHORT types
- * then the LONG must be placed before the SHORT.
- */
- static TIFFFieldInfo FieldInfo[] = {
- { TIFFTAG_SUBFILETYPE, 1, TIFF_LONG, FIELD_SUBFILETYPE,
- TRUE, "SubfileType" },
- #ifdef SUBFILE_COMPAT
- { TIFFTAG_SUBFILETYPE, 1, TIFF_SHORT, FIELD_SUBFILETYPE,
- FALSE, "SubfileType" },
- #endif
- { TIFFTAG_OSUBFILETYPE, 1, TIFF_SHORT, FIELD_SUBFILETYPE,
- FALSE, "OldSubfileType" },
- { TIFFTAG_IMAGEWIDTH, 1, TIFF_LONG, FIELD_IMAGEDIMENSIONS,
- FALSE, "ImageWidth" },
- { TIFFTAG_IMAGEWIDTH, 1, TIFF_SHORT, FIELD_IMAGEDIMENSIONS,
- FALSE, "ImageWidth" },
- { TIFFTAG_IMAGELENGTH, 1, TIFF_LONG, FIELD_IMAGEDIMENSIONS,
- TRUE, "ImageLength" },
- { TIFFTAG_IMAGELENGTH, 1, TIFF_SHORT, FIELD_IMAGEDIMENSIONS,
- TRUE, "ImageLength" },
- { TIFFTAG_BITSPERSAMPLE, -1, TIFF_SHORT, FIELD_BITSPERSAMPLE,
- FALSE, "BitsPerSample" },
- { TIFFTAG_COMPRESSION, 1, TIFF_SHORT, FIELD_COMPRESSION,
- FALSE, "Compression" },
- { TIFFTAG_PHOTOMETRIC, 1, TIFF_SHORT, FIELD_PHOTOMETRIC,
- TRUE, "PhotometricInterpretation" },
- { TIFFTAG_THRESHHOLDING, 1, TIFF_SHORT, FIELD_THRESHHOLDING,
- TRUE, "Threshholding" },
- { TIFFTAG_CELLWIDTH, 1, TIFF_SHORT, (u_short)-1,
- TRUE, "CellWidth" },
- { TIFFTAG_CELLLENGTH, 1, TIFF_SHORT, (u_short)-1,
- TRUE, "CellLength" },
- { TIFFTAG_FILLORDER, 1, TIFF_SHORT, FIELD_FILLORDER,
- FALSE, "FillOrder" },
- { TIFFTAG_DOCUMENTNAME, -1, TIFF_ASCII, FIELD_DOCUMENTNAME,
- TRUE, "DocumentName" },
- { TIFFTAG_IMAGEDESCRIPTION, -1, TIFF_ASCII, FIELD_IMAGEDESCRIPTION,
- TRUE, "ImageDescription" },
- { TIFFTAG_MAKE, -1, TIFF_ASCII, FIELD_MAKE,
- TRUE, "Make" },
- { TIFFTAG_MODEL, -1, TIFF_ASCII, FIELD_MODEL,
- TRUE, "Model" },
- { TIFFTAG_STRIPOFFSETS, -1, TIFF_LONG, FIELD_STRIPOFFSETS,
- FALSE, "StripOffsets" },
- { TIFFTAG_STRIPOFFSETS, -1, TIFF_SHORT, FIELD_STRIPOFFSETS,
- FALSE, "StripOffsets" },
- { TIFFTAG_ORIENTATION, 1, TIFF_SHORT, FIELD_ORIENTATION,
- TRUE, "Orientation" },
- { TIFFTAG_SAMPLESPERPIXEL, 1, TIFF_SHORT, FIELD_SAMPLESPERPIXEL,
- FALSE, "SamplesPerPixel" },
- { TIFFTAG_ROWSPERSTRIP, 1, TIFF_LONG, FIELD_ROWSPERSTRIP,
- FALSE, "RowsPerStrip" },
- { TIFFTAG_ROWSPERSTRIP, 1, TIFF_SHORT, FIELD_ROWSPERSTRIP,
- FALSE, "RowsPerStrip" },
- { TIFFTAG_STRIPBYTECOUNTS, -1, TIFF_LONG, FIELD_STRIPBYTECOUNTS,
- FALSE, "StripByteCounts" },
- { TIFFTAG_STRIPBYTECOUNTS, -1, TIFF_SHORT, FIELD_STRIPBYTECOUNTS,
- FALSE, "StripByteCounts" },
- { TIFFTAG_MINSAMPLEVALUE, -1, TIFF_SHORT, FIELD_MINSAMPLEVALUE,
- TRUE, "MinSampleValue" },
- { TIFFTAG_MAXSAMPLEVALUE, -1, TIFF_SHORT, FIELD_MAXSAMPLEVALUE,
- TRUE, "MaxSampleValue" },
- { TIFFTAG_XRESOLUTION, 1, TIFF_RATIONAL,FIELD_RESOLUTION,
- TRUE, "XResolution" },
- { TIFFTAG_YRESOLUTION, 1, TIFF_RATIONAL,FIELD_RESOLUTION,
- TRUE, "YResolution" },
- { TIFFTAG_PLANARCONFIG, 1, TIFF_SHORT, FIELD_PLANARCONFIG,
- FALSE, "PlanarConfiguration" },
- { TIFFTAG_PAGENAME, -1, TIFF_ASCII, FIELD_PAGENAME,
- TRUE, "PageName" },
- { TIFFTAG_XPOSITION, 1, TIFF_RATIONAL,FIELD_POSITION,
- TRUE, "XPosition" },
- { TIFFTAG_YPOSITION, 1, TIFF_RATIONAL,FIELD_POSITION,
- TRUE, "YPosition" },
- { TIFFTAG_FREEOFFSETS, -1, TIFF_LONG, (u_short)-1,
- FALSE, "FreeOffsets" },
- { TIFFTAG_FREEBYTECOUNTS, -1, TIFF_LONG, (u_short)-1,
- FALSE, "FreeByteCounts" },
- { TIFFTAG_GRAYRESPONSEUNIT, 1, TIFF_SHORT, FIELD_GRAYRESPONSEUNIT,
- TRUE, "GrayResponseUnit" },
- { TIFFTAG_GRAYRESPONSECURVE,-1, TIFF_SHORT, FIELD_GRAYRESPONSECURVE,
- TRUE, "GrayResponseCurve" },
- { TIFFTAG_GROUP3OPTIONS, 1, TIFF_LONG, FIELD_GROUP3OPTIONS,
- FALSE, "Group3Options" },
- { TIFFTAG_GROUP4OPTIONS, 1, TIFF_LONG, FIELD_GROUP4OPTIONS,
- FALSE, "Group4Options" },
- { TIFFTAG_RESOLUTIONUNIT, 1, TIFF_SHORT, FIELD_RESOLUTIONUNIT,
- TRUE, "ResolutionUnit" },
- { TIFFTAG_PAGENUMBER, 2, TIFF_SHORT, FIELD_PAGENUMBER,
- TRUE, "PageNumber" },
- { TIFFTAG_COLORRESPONSEUNIT, 1, TIFF_SHORT, FIELD_COLORRESPONSEUNIT,
- TRUE, "ColorResponseUnit" },
- { TIFFTAG_COLORRESPONSECURVE,-1,TIFF_SHORT, FIELD_COLORRESPONSECURVE,
- TRUE, "ColorResponseCurve" },
- { TIFFTAG_SOFTWARE, -1, TIFF_ASCII, FIELD_SOFTWARE,
- TRUE, "Software" },
- { TIFFTAG_DATETIME, -1, TIFF_ASCII, FIELD_DATETIME,
- TRUE, "DateTime" },
- { TIFFTAG_ARTIST, -1, TIFF_ASCII, FIELD_ARTIST,
- TRUE, "Artist" },
- { TIFFTAG_HOSTCOMPUTER, -1, TIFF_ASCII, FIELD_HOSTCOMPUTER,
- TRUE, "HostComputer" },
- { TIFFTAG_PREDICTOR, 1, TIFF_SHORT, FIELD_PREDICTOR,
- FALSE, "Predictor" },
- { TIFFTAG_COLORMAP, 1, TIFF_SHORT, FIELD_COLORMAP,
- TRUE, "ColorMap" },
- { TIFFTAG_TILEWIDTH, 1, TIFF_LONG, FIELD_TILEDIMENSIONS,
- FALSE, "TileWidth" },
- { TIFFTAG_TILEWIDTH, 1, TIFF_SHORT, FIELD_TILEDIMENSIONS,
- FALSE, "TileWidth" },
- { TIFFTAG_TILELENGTH, 1, TIFF_LONG, FIELD_TILEDIMENSIONS,
- FALSE, "TileLength" },
- { TIFFTAG_TILELENGTH, 1, TIFF_SHORT, FIELD_TILEDIMENSIONS,
- FALSE, "TileLength" },
- { TIFFTAG_TILEOFFSETS, 1, TIFF_LONG, FIELD_STRIPOFFSETS,
- FALSE, "TileOffsets" },
- { TIFFTAG_TILEBYTECOUNTS, 1, TIFF_LONG, FIELD_STRIPBYTECOUNTS,
- FALSE, "TileByteCounts" },
- { TIFFTAG_TILEBYTECOUNTS, 1, TIFF_SHORT, FIELD_STRIPBYTECOUNTS,
- FALSE, "TileByteCounts" },
- { TIFFTAG_BADFAXLINES, 1, TIFF_LONG, FIELD_BADFAXLINES,
- TRUE, "BadFaxLines" },
- { TIFFTAG_BADFAXLINES, 1, TIFF_SHORT, FIELD_BADFAXLINES,
- TRUE, "BadFaxLines" },
- { TIFFTAG_CLEANFAXDATA, 1, TIFF_SHORT, FIELD_CLEANFAXDATA,
- TRUE, "CleanFaxData" },
- { TIFFTAG_CONSECUTIVEBADFAXLINES,1, TIFF_LONG,FIELD_BADFAXRUN,
- TRUE, "ConsecutiveBadFaxLines" },
- { TIFFTAG_CONSECUTIVEBADFAXLINES,1, TIFF_SHORT,FIELD_BADFAXRUN,
- TRUE, "ConsecutiveBadFaxLines" },
- { TIFFTAG_INKSET, 1, TIFF_SHORT, FIELD_INKSET,
- FALSE, "InkSet" },
- /* begin SGI tags */
- { TIFFTAG_MATTEING, 1, TIFF_SHORT, FIELD_MATTEING,
- FALSE, "Matteing" },
- { TIFFTAG_DATATYPE, 1, TIFF_SHORT, FIELD_DATATYPE,
- FALSE, "DataType" },
- { TIFFTAG_IMAGEDEPTH, 1, TIFF_LONG, FIELD_IMAGEDEPTH,
- FALSE, "ImageDepth" },
- { TIFFTAG_IMAGEDEPTH, 1, TIFF_SHORT, FIELD_IMAGEDEPTH,
- FALSE, "ImageDepth" },
- { TIFFTAG_TILEDEPTH, 1, TIFF_LONG, FIELD_TILEDEPTH,
- FALSE, "TileDepth" },
- { TIFFTAG_TILEDEPTH, 1, TIFF_SHORT, FIELD_TILEDEPTH,
- FALSE, "TileDepth" },
- /* end SGI tags */
- #ifdef JPEG_SUPPORT /* C-Cube JPEG tags */
- { TIFFTAG_JPEGPROC, 1, TIFF_SHORT, FIELD_JPEGPROC,
- FALSE, "JPEGProc" },
- { TIFFTAG_JPEGQTABLEPREC, 1, TIFF_SHORT, FIELD_JPEGQTABLEPREC,
- FALSE, "JPEGQTablePrecision" },
- { TIFFTAG_JPEGQTABLES, -1, TIFF_LONG, FIELD_JPEGQTABLES,
- FALSE, "JPEGQTables" },
- { TIFFTAG_JPEGDCTABLES, -1, TIFF_LONG, FIELD_JPEGDCTABLES,
- FALSE, "JPEGDCTables" },
- { TIFFTAG_JPEGACTABLES, -1, TIFF_LONG, FIELD_JPEGACTABLES,
- FALSE, "JPEGACTables" },
- #endif
- };
- #define NFIELDINFO NITEMS(FieldInfo)
-
- #define IGNORE 0 /* tag placeholder used below */
-
- static int datawidth[] = {
- 1, /* nothing */
- 1, /* TIFF_BYTE */
- 1, /* TIFF_ASCII */
- 2, /* TIFF_SHORT */
- 4, /* TIFF_LONG */
- 8, /* TIFF_RATIONAL */
- };
-
- #include "prototypes.h"
- #if USE_PROTOTYPES
- static EstimateStripByteCounts(TIFF *, TIFFDirEntry *, u_int);
- static MissingRequired(TIFF *, char *);
- static TIFFFetchData(TIFF *, TIFFDirEntry *, char *);
- static TIFFFetchString(TIFF *, TIFFDirEntry *, char *);
- static double TIFFFetchRational(TIFF *, TIFFDirEntry *);
- static TIFFUnpackShorts(TIFF *, u_short [], TIFFDirEntry *);
- static TIFFFetchPerSampleShorts(TIFF *, TIFFDirEntry *, long *);
- static TIFFFetchStripThing(TIFF *, TIFFDirEntry *, long, u_long **);
- static TIFFFetchJPEGQTables(TIFF *, TIFFDirEntry *);
- static TIFFFetchJPEGCTables(TIFF *, TIFFDirEntry *, u_char ***);
- static TIFFFieldInfo *FindFieldInfo(u_short, TIFFDataType);
- static TIFFFieldInfo *FieldWithTag(u_short);
- static TIFFGetField1(TIFFDirectory *, int, va_list);
- extern int TIFFSetCompressionScheme(TIFF *, int);
- extern int TIFFDefaultDirectory(TIFF*);
- extern int TIFFFreeDirectory(TIFF*);
- #else
- static EstimateStripByteCounts();
- static MissingRequired();
- static TIFFFetchData();
- static TIFFFetchString();
- static double TIFFFetchRational();
- static TIFFUnpackShorts();
- static TIFFFetchPerSampleShorts();
- static TIFFFetchStripThing();
- static TIFFFetchJPEGQTables();
- static TIFFFetchJPEGCTables();
- static TIFFFieldInfo *FindFieldInfo();
- static TIFFFieldInfo *FieldWithTag();
- static TIFFGetField1();
- extern int TIFFSetCompressionScheme();
- extern int TIFFDefaultDirectory();
- extern int TIFFFreeDirectory();
- #endif
-
- /*
- * Read the next TIFF directory from a file
- * and convert it to the internal format.
- * We read directories sequentially.
- */
- TIFFReadDirectory(tif)
- TIFF *tif;
- {
- register TIFFDirEntry *dp;
- register int n;
- register TIFFDirectory *td = NULL;
- TIFFDirEntry *dir = NULL;
- long v;
- TIFFFieldInfo *fip;
- u_short dircount;
- char *cp;
- int diroutoforderwarning = 0, ok;
-
- tif->tif_diroff = tif->tif_nextdiroff;
- if (tif->tif_diroff == 0) /* no more directories */
- return (0);
- if (!isMapped(tif)) {
- if (!SeekOK(tif->tif_fd, tif->tif_diroff)) {
- TIFFError(tif->tif_name,
- "Seek error accessing TIFF directory");
- return (0);
- }
- if (!ReadOK(tif->tif_fd, &dircount, sizeof (short))) {
- TIFFError(tif->tif_name,
- "Can not read TIFF directory count");
- return (0);
- }
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabShort(&dircount);
- dir = (TIFFDirEntry *)malloc(dircount * sizeof (TIFFDirEntry));
- if (dir == NULL) {
- TIFFError(tif->tif_name,
- "No space to read TIFF directory");
- return (0);
- }
- if (!ReadOK(tif->tif_fd, dir, dircount*sizeof (TIFFDirEntry))) {
- TIFFError(tif->tif_name, "Can not read TIFF directory");
- goto bad;
- }
- /*
- * Read offset to next directory for sequential scans.
- */
- if (!ReadOK(tif->tif_fd, &tif->tif_nextdiroff, sizeof (long)))
- tif->tif_nextdiroff = 0;
- #ifdef MMAP_SUPPORT
- } else {
- off_t off = tif->tif_diroff;
-
- if (off + sizeof (short) > tif->tif_size) {
- TIFFError(tif->tif_name,
- "Can not read TIFF directory count");
- return (0);
- } else
- bcopy(tif->tif_base + off, &dircount, sizeof (short));
- off += sizeof (short);
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabShort(&dircount);
- dir = (TIFFDirEntry *)malloc(dircount * sizeof (TIFFDirEntry));
- if (dir == NULL) {
- TIFFError(tif->tif_name,
- "No space to read TIFF directory");
- return (0);
- }
- if (off + dircount*sizeof (TIFFDirEntry) > tif->tif_size) {
- TIFFError(tif->tif_name, "Can not read TIFF directory");
- goto bad;
- } else
- bcopy(tif->tif_base + off, dir,
- dircount*sizeof (TIFFDirEntry));
- off += dircount* sizeof (TIFFDirEntry);
- if (off + sizeof (long) < tif->tif_size)
- bcopy(tif->tif_base + off, &tif->tif_nextdiroff,
- sizeof (long));
- else
- tif->tif_nextdiroff = 0;
- #endif
- }
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabLong((u_long *)&tif->tif_nextdiroff);
-
- tif->tif_flags &= ~TIFF_BEENWRITING; /* reset before new dir */
- /*
- * Setup default value and then make a pass over
- * the fields to check type and tag information,
- * and to extract info required to size data
- * structures. A second pass is made afterwards
- * to read in everthing not taken in the first pass.
- */
- td = &tif->tif_dir;
- if (tif->tif_diroff != tif->tif_header.tiff_diroff) {
- /* free any old stuff and reinit */
- TIFFFreeDirectory(tif);
- }
- TIFFDefaultDirectory(tif);
- /*
- * Electronic Arts writes gray-scale TIFF files
- * without a PlanarConfiguration directory entry.
- * Thus we setup a default value here, even though
- * the TIFF spec says there is no default value.
- */
- TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
- for (fip = FieldInfo, dp = dir, n = dircount; n > 0; n--, dp++) {
- if (tif->tif_flags & TIFF_SWAB) {
- TIFFSwabArrayOfShort(&dp->tdir_tag, 2);
- TIFFSwabArrayOfLong(&dp->tdir_count, 2);
- }
- /*
- * Find the field information entry for this tag.
- */
- /*
- * Silicon Beach (at least) writes unordered
- * directory tags (violating the spec). Handle
- * it here, but be obnoxious (maybe they'll
- * fix it?).
- */
- if (dp->tdir_tag < fip->field_tag) {
- if (!diroutoforderwarning) {
- TIFFWarning(tif->tif_name,
- "Invalid TIFF directory; tags are not sorted in ascending order");
- diroutoforderwarning = 1;
- }
- fip = FieldInfo; /* O(n^2) */
- }
- while (fip < &FieldInfo[NFIELDINFO] &&
- fip->field_tag < dp->tdir_tag)
- fip++;
- if (fip >= &FieldInfo[NFIELDINFO] ||
- fip->field_tag != dp->tdir_tag) {
- TIFFWarning(tif->tif_name,
- "ignoring unknown field with tag %d (0x%x)",
- dp->tdir_tag, dp->tdir_tag);
- dp->tdir_tag = IGNORE;
- fip = FieldInfo; /* restart search */
- continue;
- }
- /*
- * Null out old tags that we ignore.
- */
- if (fip->field_bit == (u_short)-1) {
- dp->tdir_tag = IGNORE;
- continue;
- }
- /*
- * Check data type.
- */
- while (dp->tdir_type != (u_short)fip->field_type) {
- fip++;
- if (fip >= &FieldInfo[NFIELDINFO] ||
- fip->field_tag != dp->tdir_tag) {
- TIFFError(tif->tif_name,
- "Wrong data type %d for field \"%s\"",
- dp->tdir_type, fip[-1].field_name);
- goto bad;
- }
- }
- switch (dp->tdir_tag) {
- case TIFFTAG_STRIPOFFSETS:
- case TIFFTAG_STRIPBYTECOUNTS:
- case TIFFTAG_TILEOFFSETS:
- case TIFFTAG_TILEBYTECOUNTS:
- TIFFSetFieldBit(tif, fip->field_bit);
- break;
- case TIFFTAG_IMAGEWIDTH:
- case TIFFTAG_IMAGELENGTH:
- case TIFFTAG_IMAGEDEPTH:
- case TIFFTAG_TILELENGTH:
- case TIFFTAG_TILEWIDTH:
- case TIFFTAG_TILEDEPTH:
- case TIFFTAG_PLANARCONFIG:
- case TIFFTAG_SAMPLESPERPIXEL:
- if (!TIFFSetField(tif, dp->tdir_tag, (int)
- TIFFExtractData(tif, dp->tdir_type, dp->tdir_offset)))
- goto bad;
- break;
- case TIFFTAG_ROWSPERSTRIP:
- if (!TIFFSetField(tif, dp->tdir_tag, (long)
- TIFFExtractData(tif, dp->tdir_type, dp->tdir_offset)))
- goto bad;
- break;
- }
- }
-
- /*
- * Allocate directory structure and setup defaults.
- */
- if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) {
- MissingRequired(tif, "ImageLength");
- goto bad;
- }
- if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) {
- MissingRequired(tif, "PlanarConfiguration");
- goto bad;
- }
- /*
- * Setup appropriate structures (by strip or by tile)
- */
- if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
- td->td_stripsperimage = (td->td_rowsperstrip == 0xffffffff ?
- (td->td_imagelength != 0 ? 1 : 0) :
- howmany(td->td_imagelength, td->td_rowsperstrip));
- td->td_tilewidth = td->td_imagewidth;
- td->td_tilelength = td->td_rowsperstrip;
- td->td_tiledepth = td->td_imagedepth;
- tif->tif_flags &= ~TIFF_ISTILED;
- } else {
- td->td_stripsperimage = TIFFNumberOfTiles(tif);
- tif->tif_flags |= TIFF_ISTILED;
- }
- td->td_nstrips = td->td_stripsperimage;
- if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
- td->td_nstrips *= td->td_samplesperpixel;
- if (td->td_nstrips > 0 && !TIFFFieldSet(tif, FIELD_STRIPOFFSETS)) {
- MissingRequired(tif,
- isTiled(tif) ? "TileOffsets" : "StripOffsets");
- goto bad;
- }
-
- /*
- * Second pass: extract other information.
- *
- * Should do a better job of verifying values.
- */
- for (dp = dir, n = dircount; n > 0; n--, dp++) {
- if (dp->tdir_tag == IGNORE)
- continue;
- switch (dp->tdir_tag) {
- case TIFFTAG_COMPRESSION:
- /*
- * The 5.0 spec says the compression tag has
- * one value, while earlier specs say it has
- * one value per sample. Because of this, we
- * accept the tag if one value is supplied.
- */
- if (dp->tdir_count == 1) {
- v = TIFFExtractData(tif,
- dp->tdir_type, dp->tdir_offset);
- if (!TIFFSetField(tif,
- TIFFTAG_COMPRESSION, (int)v))
- goto bad;
- break;
- }
- /* fall thru... */
- case TIFFTAG_MINSAMPLEVALUE:
- case TIFFTAG_MAXSAMPLEVALUE:
- case TIFFTAG_BITSPERSAMPLE:
- case TIFFTAG_DATATYPE:
- if (!TIFFFetchPerSampleShorts(tif, dp, &v) ||
- !TIFFSetField(tif, dp->tdir_tag, (int)v))
- goto bad;
- break;
- case TIFFTAG_STRIPOFFSETS:
- case TIFFTAG_TILEOFFSETS:
- if (!TIFFFetchStripThing(tif, dp,
- td->td_nstrips, &td->td_stripoffset))
- goto bad;
- TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS);
- break;
- case TIFFTAG_STRIPBYTECOUNTS:
- case TIFFTAG_TILEBYTECOUNTS:
- if (!TIFFFetchStripThing(tif, dp,
- td->td_nstrips, &td->td_stripbytecount))
- goto bad;
- TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
- break;
- case TIFFTAG_IMAGELENGTH:
- case TIFFTAG_ROWSPERSTRIP:
- case TIFFTAG_TILELENGTH:
- case TIFFTAG_TILEWIDTH:
- case TIFFTAG_TILEDEPTH:
- case TIFFTAG_SAMPLESPERPIXEL:
- case TIFFTAG_PLANARCONFIG:
- /* handled in first pass above */
- break;
- case TIFFTAG_GRAYRESPONSECURVE:
- case TIFFTAG_COLORRESPONSECURVE:
- case TIFFTAG_COLORMAP:
- v = (1L<<td->td_bitspersample) * sizeof (u_short);
- cp = malloc(dp->tdir_tag == TIFFTAG_GRAYRESPONSECURVE ?
- v : 3*v);
- if (cp == NULL)
- goto bad;
- ok = (TIFFFetchData(tif, dp, cp) &&
- TIFFSetField(tif, dp->tdir_tag, cp,cp+v,cp+2*v));
- free(cp);
- if (!ok)
- goto bad;
- break;
- case TIFFTAG_PAGENUMBER:
- TIFFUnpackShorts(tif, td->td_pagenumber, dp);
- TIFFSetFieldBit(tif, FIELD_PAGENUMBER);
- break;
- #ifdef JPEG_SUPPORT
- case TIFFTAG_JPEGQTABLES:
- if (!TIFFFetchJPEGQTables(tif, dp))
- goto bad;
- TIFFSetFieldBit(tif, FIELD_JPEGQTABLES);
- break;
- case TIFFTAG_JPEGDCTABLES:
- if (!TIFFFetchJPEGCTables(tif, dp, &td->td_dctab))
- goto bad;
- TIFFSetFieldBit(tif, FIELD_JPEGDCTABLES);
- break;
- case TIFFTAG_JPEGACTABLES:
- if (!TIFFFetchJPEGCTables(tif, dp, &td->td_actab))
- goto bad;
- TIFFSetFieldBit(tif, FIELD_JPEGACTABLES);
- break;
- #endif
- /* BEGIN REV 4.0 COMPATIBILITY */
- case TIFFTAG_OSUBFILETYPE:
- v = 0;
- switch (TIFFExtractData(tif, dp->tdir_type,
- dp->tdir_offset)) {
- case OFILETYPE_REDUCEDIMAGE:
- v = FILETYPE_REDUCEDIMAGE;
- break;
- case OFILETYPE_PAGE:
- v = FILETYPE_PAGE;
- break;
- }
- if (!TIFFSetField(tif, dp->tdir_tag, (int)v))
- goto bad;
- break;
- /* END REV 4.0 COMPATIBILITY */
- default:
- switch (dp->tdir_type) {
- case TIFF_BYTE:
- case TIFF_SHORT:
- case TIFF_LONG:
- if (!TIFFSetField(tif, dp->tdir_tag, (int)
- TIFFExtractData(tif, dp->tdir_type, dp->tdir_offset)))
- goto bad;
- break;
- case TIFF_RATIONAL:
- if (!TIFFSetField(tif, dp->tdir_tag,
- TIFFFetchRational(tif, dp)))
- goto bad;
- break;
- case TIFF_ASCII:
- if (dp->tdir_count > 0) {
- cp = malloc(dp->tdir_count);
- if (cp == NULL)
- goto bad;
- ok = (TIFFFetchString(tif, dp, cp) &&
- TIFFSetField(tif, dp->tdir_tag, cp));
- free(cp);
- if (!ok)
- goto bad;
- }
- break;
- }
- break;
- }
- }
- if (!TIFFFieldSet(tif, FIELD_STRIPBYTECOUNTS)) {
- /*
- * Some manufacturers violate the spec by not giving
- * the size of the strips. In this case, assume there
- * is one uncompressed strip of data.
- */
- if (td->td_nstrips > 1) {
- MissingRequired(tif, "StripByteCounts");
- goto bad;
- }
- TIFFWarning(tif->tif_name,
- "TIFF directory is missing required \"%s\" field, calculating from imagelength",
- FieldWithTag(TIFFTAG_STRIPBYTECOUNTS)->field_name);
- EstimateStripByteCounts(tif, dir, dircount);
- } else if (td->td_nstrips == 1 && td->td_stripbytecount[0] == 0) {
- /*
- * Plexus (and others) sometimes give a value
- * of zero for a tag when they don't know what
- * the correct value is! Try and handle the
- * simple case of estimating the size of a one
- * strip image.
- */
- TIFFWarning(tif->tif_name,
- "Bogus \"%s\" field, ignoring and calculating from imagelength",
- FieldWithTag(TIFFTAG_STRIPBYTECOUNTS)->field_name);
- EstimateStripByteCounts(tif, dir, dircount);
- }
- if (dir)
- free((char *)dir);
- if (!TIFFFieldSet(tif, FIELD_MAXSAMPLEVALUE))
- td->td_maxsamplevalue = (1L<<td->td_bitspersample)-1;
- /*
- * Setup default compression scheme.
- */
- if (!TIFFFieldSet(tif, FIELD_COMPRESSION))
- TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
- /*
- * Reinitialize i/o since we are starting on a new directory.
- */
- tif->tif_row = -1;
- tif->tif_curstrip = -1;
- tif->tif_col = -1;
- tif->tif_curtile = -1;
- tif->tif_tilesize = TIFFTileSize(tif);
- tif->tif_scanlinesize = TIFFScanlineSize(tif);
- return (1);
- bad:
- if (dir)
- free((char *)dir);
- return (0);
- }
-
- static
- EstimateStripByteCounts(tif, dir, dircount)
- TIFF *tif;
- TIFFDirEntry *dir;
- u_int dircount;
- {
- register TIFFDirEntry *dp;
- register TIFFDirectory *td = &tif->tif_dir;
- register int n;
-
- td->td_stripbytecount = (u_long *)malloc(sizeof (u_long));
- if (td->td_compression != COMPRESSION_NONE) {
- u_long space = sizeof (TIFFHeader)
- + sizeof (short)
- + (dircount * sizeof (TIFFDirEntry))
- + sizeof (long);
- /* calculate amount of space used by indirect values */
- for (dp = dir, n = dircount; n > 0; n--, dp++) {
- int cc = dp->tdir_count * datawidth[dp->tdir_type];
- if (cc > sizeof (long))
- space += cc;
- }
- td->td_stripbytecount[0] = TIFFGetFileSize(tif->tif_fd) - space;
- } else {
- u_long rowbytes = howmany(td->td_bitspersample *
- td->td_samplesperpixel * td->td_imagewidth, 8);
- td->td_stripbytecount[0] = td->td_imagelength * rowbytes;
- }
- TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
- if (!TIFFFieldSet(tif, FIELD_ROWSPERSTRIP))
- td->td_rowsperstrip = td->td_imagelength;
- }
-
- static
- MissingRequired(tif, tagname)
- TIFF *tif;
- char *tagname;
- {
- TIFFError(tif->tif_name,
- "TIFF directory is missing required \"%s\" field", tagname);
- }
-
- /*
- * Fetch a contiguous directory item.
- */
- static
- TIFFFetchData(tif, dir, cp)
- TIFF *tif;
- TIFFDirEntry *dir;
- char *cp;
- {
- int cc, w;
-
- w = datawidth[dir->tdir_type];
- cc = dir->tdir_count * w;
- if (!isMapped(tif)) {
- if (!SeekOK(tif->tif_fd, dir->tdir_offset))
- goto bad;
- if (!ReadOK(tif->tif_fd, cp, cc))
- goto bad;
- #ifdef MMAP_SUPPORT
- } else {
- if (dir->tdir_offset + cc > tif->tif_size)
- goto bad;
- bcopy(tif->tif_base + dir->tdir_offset, cp, cc);
- #endif
- }
- if (tif->tif_flags & TIFF_SWAB) {
- switch (dir->tdir_type) {
- case TIFF_SHORT:
- TIFFSwabArrayOfShort((u_short *)cp, dir->tdir_count);
- break;
- case TIFF_LONG:
- TIFFSwabArrayOfLong((u_long *)cp, dir->tdir_count);
- break;
- case TIFF_RATIONAL:
- TIFFSwabArrayOfLong((u_long *)cp, 2*dir->tdir_count);
- break;
- }
- }
- return (cc);
- bad:
- TIFFError(tif->tif_name, "Error fetching data for field \"%s\"",
- FieldWithTag(dir->tdir_tag)->field_name);
- return (0);
- }
-
- /*
- * Fetch an ASCII item from the file.
- */
- static
- TIFFFetchString(tif, dir, cp)
- TIFF *tif;
- TIFFDirEntry *dir;
- char *cp;
- {
- if (dir->tdir_count <= 4) {
- u_long l = dir->tdir_offset;
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabLong(&l);
- bcopy(&l, cp, dir->tdir_count);
- return (1);
- }
- return (TIFFFetchData(tif, dir, cp));
- }
-
- /*
- * Fetch a rational item from the file
- * at offset off. We return the value
- * as floating point number.
- */
- static double
- TIFFFetchRational(tif, dir)
- TIFF *tif;
- TIFFDirEntry *dir;
- {
- long l[2];
-
- if (!TIFFFetchData(tif, dir, (char *)l))
- return (1.);
- if (l[1] == 0) {
- TIFFError(tif->tif_name, "%s: Rational with zero denominator",
- FieldWithTag(dir->tdir_tag)->field_name);
- return (1.);
- }
- return ((double)l[0] / (double)l[1]);
- }
-
- /*
- * Unpack a pair of short values from the
- * offset field of a directory entry.
- */
- static
- TIFFUnpackShorts(tif, v, dir)
- TIFF *tif;
- u_short v[];
- TIFFDirEntry *dir;
- {
- if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
- v[0] = dir->tdir_offset >> 16;
- v[1] = dir->tdir_offset & 0xffff;
- } else {
- v[0] = dir->tdir_offset & 0xffff;
- v[1] = dir->tdir_offset >> 16;
- }
- }
-
- /*
- * Check the count field of a directory
- * entry against the samples/pixel.
- */
- static
- CheckSampleCount(tif, dir)
- TIFF *tif;
- TIFFDirEntry *dir;
- {
- if (tif->tif_dir.td_samplesperpixel != dir->tdir_count) {
- TIFFError(tif->tif_name, "Incorrect count %d for field \"%s\"",
- dir->tdir_count, FieldWithTag(dir->tdir_tag)->field_name);
- return (0);
- }
- return (1);
- }
-
- /*
- * Fetch samples/pixel short values for
- * the specified tag and verify that
- * all values are the same.
- */
- static
- TIFFFetchPerSampleShorts(tif, dir, pl)
- TIFF *tif;
- TIFFDirEntry *dir;
- long *pl;
- {
- u_short v[4];
- int i;
-
- if (!CheckSampleCount(tif, dir))
- return (0);
- switch (dir->tdir_count) {
- case 1:
- *pl = TIFFExtractData(tif, dir->tdir_type, dir->tdir_offset);
- return (1);
- case 2:
- TIFFUnpackShorts(tif, v, dir);
- break;
- default:
- if (!TIFFFetchData(tif, dir, (char *)v))
- return (0);
- break;
- }
- for (i = 1; i < dir->tdir_count; i++)
- if (v[i] != v[0]) {
- TIFFError(tif->tif_name,
- "Cannot handle different per-sample values for field \"%s\"",
- FieldWithTag(dir->tdir_tag)->field_name);
- return (0);
- }
- *pl = v[0];
- return (1);
- }
-
- /*
- * Fetch a set of offsets or lengths.
- * While this routine says "strips",
- * in fact it's also used for tiles.
- */
- static
- TIFFFetchStripThing(tif, dir, nstrips, lpp)
- TIFF *tif;
- TIFFDirEntry *dir;
- long nstrips;
- u_long **lpp;
- {
- register u_long *lp;
- int status;
-
- if (nstrips != dir->tdir_count) {
- TIFFError(tif->tif_name,
- "Count mismatch for field \"%s\"; expecting %d, got %d",
- FieldWithTag(dir->tdir_tag)->field_name, nstrips,
- dir->tdir_count);
- return (0);
- }
- /*
- * Allocate space for strip information.
- */
- if (*lpp == NULL &&
- (*lpp = (u_long *)malloc(nstrips * sizeof (u_long))) == NULL) {
- TIFFError(tif->tif_name, "No space for \"%s\" array",
- FieldWithTag(dir->tdir_tag)->field_name);
- return (0);
- }
- lp = *lpp;
- status = 1;
- if (dir->tdir_type == (int)TIFF_SHORT) {
- /*
- * Handle short->long expansion.
- */
- if (dir->tdir_count > 2) {
- char *dp =
- malloc(dir->tdir_count*datawidth[(int)TIFF_SHORT]);
- if (dp == NULL) {
- TIFFError(tif->tif_name,
- "No memory to fetch field \"%s\"",
- FieldWithTag(dir->tdir_tag)->field_name);
- return (0);
- }
- if (status = TIFFFetchData(tif, dir, dp)) {
- register u_short *wp = (u_short *)dp;
- while (nstrips-- > 0)
- *lp++ = *wp++;
- }
- free(dp);
- } else {
- /*
- * Extract data from offset field.
- */
- if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
- *lp++ = dir->tdir_offset >> 16;
- if (dir->tdir_count > 1)
- *lp = dir->tdir_offset & 0xffff;
- } else {
- *lp++ = dir->tdir_offset & 0xffff;
- if (dir->tdir_count > 1)
- *lp = dir->tdir_offset >> 16;
- }
- }
- } else {
- if (dir->tdir_count > 1)
- status = TIFFFetchData(tif, dir, (char *)lp);
- else
- *lp = dir->tdir_offset;
- }
- return (status);
- }
-
- #ifdef JPEG_SUPPORT
- /*
- * Fetch the JPEG Quantization tables
- * for the specified directory entry.
- * Storage for the td_qtab array is
- * allocated as a side effect.
- */
- static
- TIFFFetchJPEGQTables(tif, dir)
- TIFF *tif;
- TIFFDirEntry *dir;
- {
- TIFFDirectory *td = &tif->tif_dir;
- long off[4];
- int i, j;
- TIFFDirEntry tdir;
- char *qmat;
-
- if (!CheckSampleCount(tif, dir))
- return (0);
- if (!TIFFFieldSet(tif, FIELD_JPEGQTABLEPREC)) {
- TIFFError(tif->tif_name, "Missing JPEG Q table precision");
- return (0);
- }
- if (dir->tdir_count > 1) {
- /* XXX verify count <= 4 */
- if (!TIFFFetchData(tif, dir, (char *)off))
- return (0);
- } else
- off[0] = dir->tdir_offset;
- /*
- * We don't share per-component q matrices because
- * (besides complicating this logic even more), it
- * would make it very painful if the user does a ``set''.
- */
- td->td_qtab = (u_short **)
- malloc(dir->tdir_count*(sizeof (u_short *) + 64*sizeof (u_short)));
- tdir.tdir_type =
- (td->td_jpegprec == JPEGQTABLEPREC_8BIT ? TIFF_BYTE : TIFF_SHORT);
- tdir.tdir_count = 64;
- qmat = (((char *)td->td_qtab) + dir->tdir_count*sizeof (u_short *));
- for (i = 0; i < dir->tdir_count; i++) {
- td->td_qtab[i] = (u_short *)qmat;
- tdir.tdir_offset = off[i];
- if (tdir.tdir_type == TIFF_BYTE) {
- /*
- * Read Q matrix into the upper half of the
- * short-sized array and then expand from
- * 8-bit values to 16-bit values.
- */
- if (!TIFFFetchData(tif, &tdir, qmat+64))
- return (0);
- for (j = 0; j < 64; j++)
- td->td_qtab[i][j] = qmat[64+j];
- } else {
- if (!TIFFFetchData(tif, &tdir, qmat))
- return (0);
- }
- qmat += 64*sizeof (u_short);
- }
- return (1);
- }
-
- /*
- * Fetch JPEG Huffman code tables for the
- * specified directory entry. Storage for
- * the tables are allocated as a side effect.
- */
- static
- TIFFFetchJPEGCTables(tif, dir, ptab)
- TIFF *tif;
- TIFFDirEntry *dir;
- u_char ***ptab;
- {
- TIFFDirectory *td = &tif->tif_dir;
- long off[4];
- int i, j, ncodes;
- TIFFDirEntry tdir;
- char *tab;
-
- if (!CheckSampleCount(tif, dir))
- return (0);
- if (dir->tdir_count > 1) {
- /* XXX verify count <= 4 */
- if (!TIFFFetchData(tif, dir, (char *)off))
- return (0);
- } else
- off[0] = dir->tdir_offset;
- /*
- * We don't share per-component tables because
- * (besides complicating this logic even more), it
- * would make it very painful if the user does a
- * ``set''. Note also that we don't try to optimize
- * storage of the tables -- we just allocate enough
- * space to hold the largest possible. All this
- * stuff is so complicated 'cuz the tag is defined
- * to be compatible with the JPEG table format,
- * rather than something that fits well into the
- * structure of TIFF -- argh!
- */
- *ptab = (u_char **)malloc(dir->tdir_count*
- (sizeof (u_char *) + (16+256)*sizeof (u_char)));
- tdir.tdir_type = TIFF_BYTE;
- tab = (((char *)*ptab) + dir->tdir_count*sizeof (u_char *));
- for (i = 0; i < dir->tdir_count; i++) {
- (*ptab)[i] = (u_char *)tab;
- tdir.tdir_offset = off[i];
- tdir.tdir_count = 16;
- /*
- * We must fetch the array that holds the
- * count of codes for each bit length first
- * and the count up the number of codes that
- * are in the variable length table. This
- * information is implicit in the JPEG format
- * 'cuz it's preceded by a length field.
- */
- if (!TIFFFetchData(tif, &tdir, tab)) /* count array */
- return (0);
- for (ncodes = 0, j = 0; j < 16; j++)
- ncodes += tab[j];
- /*
- * Adjust offsets and fetch codes separately.
- */
- tdir.tdir_offset += 16;
- tdir.tdir_count = ncodes;
- tab += 16;
- if (!TIFFFetchData(tif, &tdir, tab))
- return (0);
- tab += ncodes;
- }
- return (1);
- }
- #endif
-
- static TIFFFieldInfo *
- DECLARE2(FindFieldInfo, u_short, tag, TIFFDataType, dt)
- {
- register TIFFFieldInfo *fip;
-
- /* NB: if table gets big, use sorted search (e.g. binary search) */
- for (fip = FieldInfo; fip < &FieldInfo[NFIELDINFO]; fip++)
- if (fip->field_tag == tag &&
- (dt == TIFF_ANY || fip->field_type == dt))
- return (fip);
- return ((TIFFFieldInfo *)0);
- }
-
- static TIFFFieldInfo *
- DECLARE1(FieldWithTag, u_short, tag)
- {
- TIFFFieldInfo *fip = FindFieldInfo(tag, TIFF_ANY);
- if (fip)
- return (fip);
- TIFFError("FieldWithTag", "Internal error, unknown tag 0x%x", tag);
- exit(-1);
- /*NOTREACHED*/
- }
-
- #define CleanupField(field, member) { \
- if (TIFFFieldSet(tif, field)) { \
- free((char *)td->member); \
- td->member = 0; \
- } \
- }
- TIFFFreeDirectory(tif)
- TIFF *tif;
- {
- register TIFFDirectory *td = &tif->tif_dir;
-
- CleanupField(FIELD_GRAYRESPONSECURVE, td_grayresponsecurve);
- if (TIFFFieldSet(tif, FIELD_COLORRESPONSECURVE)) {
- free(td->td_redresponsecurve), td->td_redresponsecurve = 0;
- free(td->td_greenresponsecurve), td->td_greenresponsecurve = 0;
- free(td->td_blueresponsecurve), td->td_blueresponsecurve = 0;
- }
- if (TIFFFieldSet(tif, FIELD_COLORMAP)) {
- free(td->td_redcolormap), td->td_redcolormap = 0;
- free(td->td_greencolormap), td->td_greencolormap = 0;
- free(td->td_bluecolormap), td->td_bluecolormap = 0;
- }
- CleanupField(FIELD_DOCUMENTNAME, td_documentname);
- CleanupField(FIELD_ARTIST, td_artist);
- CleanupField(FIELD_DATETIME, td_datetime);
- CleanupField(FIELD_HOSTCOMPUTER, td_hostcomputer);
- CleanupField(FIELD_IMAGEDESCRIPTION, td_imagedescription);
- CleanupField(FIELD_MAKE, td_make);
- CleanupField(FIELD_MODEL, td_model);
- CleanupField(FIELD_SOFTWARE, td_software);
- CleanupField(FIELD_PAGENAME, td_pagename);
- #ifdef JPEG_SUPPORT
- CleanupField(FIELD_JPEGQTABLES, td_qtab);
- CleanupField(FIELD_JPEGDCTABLES, td_dctab);
- CleanupField(FIELD_JPEGACTABLES, td_actab);
- #endif
- if (td->td_stripoffset) {
- free((char *)td->td_stripoffset);
- td->td_stripoffset = NULL;
- }
- if (td->td_stripbytecount) {
- free((char *)td->td_stripbytecount);
- td->td_stripbytecount = NULL;
- }
- }
- #undef CleanupField
-
- /*
- * Setup a default directory structure.
- */
- TIFFDefaultDirectory(tif)
- TIFF *tif;
- {
- register TIFFDirectory *td = &tif->tif_dir;
-
- bzero((char *)td, 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_grayresponseunit = GRAYRESPONSEUNIT_100S;
- td->td_resolutionunit = RESUNIT_INCH;
- td->td_colorresponseunit = COLORRESPONSEUNIT_100S;
- td->td_datatype = DATATYPE_VOID;
- td->td_imagedepth = 1;
- td->td_inkset = INKSET_CMYK;
- (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);
- }
-
- static
- DECLARE2(setString, char**, cpp, char*, cp)
- {
- if (*cpp)
- free(*cpp), *cpp = 0;
- if (cp) {
- int len = strlen(cp)+1;
- if (*cpp = malloc(len))
- bcopy(cp, *cpp, len);
- }
- }
-
- static
- DECLARE3(setCurve, u_short**, wpp, u_short*, wp, long, nw)
- {
- if (*wpp)
- free((char *)*wpp), *wpp = 0;
- nw *= sizeof (u_short);
- if (wp && (*wpp = (u_short *)malloc(nw)))
- bcopy(wp, *wpp, nw);
- }
-
- #ifdef notdef
- static
- DECLARE3(setFloatArray, float**, wpp, float*, wp, long, nw)
- {
- if (*wpp)
- free((char *)*wpp), *wpp = 0;
- nw *= sizeof (float);
- if (wp && (*wpp = (float *)malloc(nw)))
- bcopy(wp, *wpp, nw);
- }
- #endif
-
- #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_short***, wpp, u_short**, 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)
- free((char *)*wpp), *wpp = 0;
- *wpp = (u_short **)
- malloc(nc * (sizeof (u_short *) + 64*sizeof (u_short)));
- tab = (((char *)*wpp) + nc*sizeof (u_short *));
- for (i = 0; i < nc; i++) {
- (*wpp)[i] = (u_short *)tab;
- for (j = 0; j < 64; j++)
- (*wpp)[zigzag[j]] = wp[j];
- tab += 64*sizeof (u_short);
- }
- }
-
- /*
- * Install a JPEG Coefficient table.
- */
- static
- DECLARE3(setJPEGCTable, u_char***, cpp, u_char**, cp, int, nc)
- {
- u_char *tab;
- int i, j, ncodes, nw;
-
- if (*cpp)
- free(*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 **)malloc(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 (ncodes = 0, j = 0; j < 16; j++)
- ncodes += tab[j];
- bcopy(cp[i], (*cpp)[i], ncodes);
- tab += 16+ncodes;
- }
- }
- #endif
-
- static
- TIFFSetField1(tif, tag, ap)
- TIFF *tif;
- int tag;
- va_list ap;
- {
- static char module[] = "TIFFSetField";
- TIFFDirectory *td = &tif->tif_dir;
- long v;
- int field = -1, status = 1;
-
- switch (tag) {
- case TIFFTAG_SUBFILETYPE:
- td->td_subfiletype = va_arg(ap, int);
- field = FIELD_SUBFILETYPE;
- break;
- case TIFFTAG_IMAGEWIDTH:
- td->td_imagewidth = va_arg(ap, u_long);
- field = FIELD_IMAGEDIMENSIONS;
- break;
- case TIFFTAG_IMAGELENGTH:
- td->td_imagelength = va_arg(ap, u_long);
- field = FIELD_IMAGEDIMENSIONS;
- break;
- case TIFFTAG_BITSPERSAMPLE:
- td->td_bitspersample = va_arg(ap, int);
- field = FIELD_BITSPERSAMPLE;
- 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;
- field = FIELD_COMPRESSION;
- }
- break;
- case TIFFTAG_PHOTOMETRIC:
- td->td_photometric = va_arg(ap, int);
- field = FIELD_PHOTOMETRIC;
- break;
- case TIFFTAG_THRESHHOLDING:
- td->td_threshholding = va_arg(ap, int);
- field = FIELD_THRESHHOLDING;
- break;
- case TIFFTAG_FILLORDER:
- td->td_fillorder = va_arg(ap, int);
- field = FIELD_FILLORDER;
- break;
- case TIFFTAG_DOCUMENTNAME:
- setString(&td->td_documentname, va_arg(ap, char *));
- field = FIELD_DOCUMENTNAME;
- break;
- case TIFFTAG_ARTIST:
- setString(&td->td_artist, va_arg(ap, char *));
- field = FIELD_ARTIST;
- break;
- case TIFFTAG_DATETIME:
- setString(&td->td_datetime, va_arg(ap, char *));
- field = FIELD_DATETIME;
- break;
- case TIFFTAG_HOSTCOMPUTER:
- setString(&td->td_hostcomputer, va_arg(ap, char *));
- field = FIELD_HOSTCOMPUTER;
- break;
- case TIFFTAG_IMAGEDESCRIPTION:
- setString(&td->td_imagedescription, va_arg(ap, char *));
- field = FIELD_IMAGEDESCRIPTION;
- break;
- case TIFFTAG_MAKE:
- setString(&td->td_make, va_arg(ap, char *));
- field = FIELD_MAKE;
- break;
- case TIFFTAG_MODEL:
- setString(&td->td_model, va_arg(ap, char *));
- field = FIELD_MODEL;
- break;
- case TIFFTAG_SOFTWARE:
- setString(&td->td_software, va_arg(ap, char *));
- field = FIELD_SOFTWARE;
- break;
- case TIFFTAG_ORIENTATION:
- td->td_orientation = va_arg(ap, int);
- field = FIELD_ORIENTATION;
- break;
- case TIFFTAG_SAMPLESPERPIXEL:
- v = va_arg(ap, int);
- if (v == 0)
- goto badvalue;
- if (v > 4) {
- TIFFError(tif->tif_name,
- "Cannot handle %d-channel data", v);
- goto bad;
- }
- td->td_samplesperpixel = v;
- field = FIELD_SAMPLESPERPIXEL;
- break;
- case TIFFTAG_ROWSPERSTRIP:
- v = va_arg(ap, u_long);
- if (v == 0)
- goto badvalue;
- td->td_rowsperstrip = v;
- td->td_tilelength = v;
- td->td_tilewidth = td->td_imagewidth;
- field = FIELD_ROWSPERSTRIP;
- break;
- case TIFFTAG_MINSAMPLEVALUE:
- td->td_minsamplevalue = va_arg(ap, int) & 0xffff;
- field = FIELD_MINSAMPLEVALUE;
- break;
- case TIFFTAG_MAXSAMPLEVALUE:
- td->td_maxsamplevalue = va_arg(ap, int) & 0xffff;
- field = FIELD_MAXSAMPLEVALUE;
- break;
- case TIFFTAG_XRESOLUTION:
- td->td_xresolution = va_arg(ap, dblparam_t);
- field = FIELD_RESOLUTION;
- break;
- case TIFFTAG_YRESOLUTION:
- td->td_yresolution = va_arg(ap, dblparam_t);
- field = FIELD_RESOLUTION;
- break;
- case TIFFTAG_PLANARCONFIG:
- v = va_arg(ap, int);
- td->td_planarconfig = v;
- field = FIELD_PLANARCONFIG;
- break;
- case TIFFTAG_PAGENAME:
- setString(&td->td_pagename, va_arg(ap, char *));
- field = FIELD_PAGENAME;
- break;
- case TIFFTAG_XPOSITION:
- td->td_xposition = va_arg(ap, dblparam_t);
- field = FIELD_POSITION;
- break;
- case TIFFTAG_YPOSITION:
- td->td_yposition = va_arg(ap, dblparam_t);
- field = FIELD_POSITION;
- break;
- case TIFFTAG_GRAYRESPONSEUNIT:
- td->td_grayresponseunit = va_arg(ap, int);
- field = FIELD_GRAYRESPONSEUNIT;
- break;
- case TIFFTAG_GRAYRESPONSECURVE:
- setCurve(&td->td_grayresponsecurve,
- va_arg(ap, u_short *), 1L<<td->td_bitspersample);
- field = FIELD_GRAYRESPONSECURVE;
- break;
- case TIFFTAG_GROUP3OPTIONS:
- td->td_group3options = va_arg(ap, u_long);
- field = FIELD_GROUP3OPTIONS;
- break;
- case TIFFTAG_GROUP4OPTIONS:
- td->td_group4options = va_arg(ap, u_long);
- field = FIELD_GROUP4OPTIONS;
- break;
- case TIFFTAG_RESOLUTIONUNIT:
- td->td_resolutionunit = va_arg(ap, int);
- field = FIELD_RESOLUTIONUNIT;
- break;
- case TIFFTAG_PAGENUMBER:
- td->td_pagenumber[0] = va_arg(ap, int);
- td->td_pagenumber[1] = va_arg(ap, int);
- field = FIELD_PAGENUMBER;
- break;
- case TIFFTAG_COLORRESPONSEUNIT:
- td->td_colorresponseunit = va_arg(ap, int);
- field = FIELD_COLORRESPONSEUNIT;
- break;
- case TIFFTAG_COLORRESPONSECURVE:
- v = 1L<<td->td_bitspersample;
- setCurve(&td->td_redresponsecurve, va_arg(ap, u_short *), v);
- setCurve(&td->td_greenresponsecurve, va_arg(ap, u_short *), v);
- setCurve(&td->td_blueresponsecurve, va_arg(ap, u_short *), v);
- field = FIELD_COLORRESPONSECURVE;
- break;
- case TIFFTAG_COLORMAP:
- v = 1L<<td->td_bitspersample;
- setCurve(&td->td_redcolormap, va_arg(ap, u_short *), v);
- setCurve(&td->td_greencolormap, va_arg(ap, u_short *), v);
- setCurve(&td->td_bluecolormap, va_arg(ap, u_short *), v);
- field = FIELD_COLORMAP;
- break;
- case TIFFTAG_PREDICTOR:
- td->td_predictor = va_arg(ap, int);
- field = FIELD_PREDICTOR;
- break;
- case TIFFTAG_MATTEING:
- td->td_matteing = va_arg(ap, int);
- field = FIELD_MATTEING;
- break;
- case TIFFTAG_INKSET:
- td->td_inkset = va_arg(ap, int);
- field = FIELD_INKSET;
- break;
- case TIFFTAG_BADFAXLINES:
- td->td_badfaxlines = va_arg(ap, u_long);
- field = FIELD_BADFAXLINES;
- break;
- case TIFFTAG_CLEANFAXDATA:
- td->td_cleanfaxdata = va_arg(ap, int);
- field = FIELD_CLEANFAXDATA;
- break;
- case TIFFTAG_CONSECUTIVEBADFAXLINES:
- td->td_badfaxrun = va_arg(ap, int);
- field = FIELD_BADFAXRUN;
- break;
- case TIFFTAG_TILEWIDTH:
- td->td_tilewidth = va_arg(ap, u_long);
- field = FIELD_TILEDIMENSIONS;
- tif->tif_flags |= TIFF_ISTILED;
- break;
- case TIFFTAG_TILELENGTH:
- td->td_tilelength = va_arg(ap, u_long);
- field = FIELD_TILEDIMENSIONS;
- tif->tif_flags |= TIFF_ISTILED;
- break;
- case TIFFTAG_TILEDEPTH:
- v = va_arg(ap, u_long);
- if (v == 0)
- goto badvalue;
- td->td_tiledepth = v;
- field = FIELD_TILEDEPTH;
- break;
- case TIFFTAG_DATATYPE:
- td->td_datatype = va_arg(ap, int);
- field = FIELD_DATATYPE;
- break;
- case TIFFTAG_IMAGEDEPTH:
- td->td_imagedepth = va_arg(ap, u_long);
- field = FIELD_IMAGEDEPTH;
- break;
- #ifdef JPEG_SUPPORT
- case TIFFTAG_JPEGPROC:
- td->td_jpegproc = va_arg(ap, int);
- field = FIELD_JPEGPROC;
- break;
- case TIFFTAG_JPEGQTABLEPREC:
- td->td_jpegprec = va_arg(ap, int);
- field = FIELD_JPEGQTABLEPREC;
- break;
- case TIFFTAG_JPEGQTABLES:
- setJPEGQTable(&td->td_qtab, va_arg(ap, u_short **),
- td->td_samplesperpixel);
- field = FIELD_JPEGQTABLES;
- break;
- case TIFFTAG_JPEGDCTABLES:
- setJPEGCTable(&td->td_dctab, va_arg(ap, u_char **),
- td->td_samplesperpixel);
- field = FIELD_JPEGDCTABLES;
- break;
- case TIFFTAG_JPEGACTABLES:
- setJPEGCTable(&td->td_actab, va_arg(ap, u_char **),
- td->td_samplesperpixel);
- field = FIELD_JPEGACTABLES;
- break;
- #endif
- }
- if (field >= 0) {
- TIFFSetFieldBit(tif, field);
- tif->tif_flags |= TIFF_DIRTYDIRECT;
- }
- va_end(ap);
- return (status);
- badvalue:
- TIFFError(tif->tif_name, "%d: Bad value for \"%s\"", v,
- FieldWithTag(tag)->field_name);
- bad:
- 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
- OkToChangeTag(tif, tag)
- TIFF *tif;
- int tag;
- {
- if (tag != TIFFTAG_IMAGELENGTH &&
- (tif->tif_flags & TIFF_BEENWRITING)) {
- TIFFFieldInfo *fip = FindFieldInfo(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, 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 {
- TIFFFieldInfo *fip = FindFieldInfo(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.
- */
- TIFFVSetField(tif, tag, ap)
- TIFF *tif;
- int tag;
- va_list ap;
- {
- int status = 0;
-
- if (!OkToChangeTag(tif, tag)) {
- TIFFFieldInfo *fip = FindFieldInfo(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);
- }
-
- /*
- * Return the value of a field in the
- * internal directory structure.
- */
- /*VARARGS2*/
- DECLARE2V(TIFFGetField, TIFF*, tif, int, tag)
- {
- TIFFFieldInfo *fip = FindFieldInfo(tag, TIFF_ANY);
-
- if (!fip)
- TIFFError("TIFFGetField", "Unknown field, tag 0x%x", tag);
- else if (TIFFFieldSet(tif, fip->field_bit)) {
- va_list ap;
-
- VA_START(ap, tag);
- (void) TIFFGetField1(&tif->tif_dir, tag, ap);
- va_end(ap);
- return (1);
- }
- return (0);
- }
-
- /*
- * Like TIFFGetField, but taking a varargs
- * parameter list. This routine is useful
- * for building higher-level interfaces on
- * top of the library.
- */
- TIFFVGetField(tif, tag, ap)
- TIFF *tif;
- int tag;
- va_list ap;
- {
- TIFFFieldInfo *fip = FindFieldInfo(tag, TIFF_ANY);
-
- if (fip) {
- if (TIFFFieldSet(tif, fip->field_bit)) {
- (void) TIFFGetField1(&tif->tif_dir, tag, ap);
- return (1);
- }
- } else
- TIFFError("TIFFGetField", "Unknown field, tag 0x%x", tag);
- return (0);
- }
-
- static
- TIFFGetField1(td, tag, ap)
- TIFFDirectory *td;
- 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_GRAYRESPONSEUNIT:
- *va_arg(ap, u_short *) = td->td_grayresponseunit;
- break;
- case TIFFTAG_GRAYRESPONSECURVE:
- *va_arg(ap, u_short **) = td->td_grayresponsecurve;
- 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_COLORRESPONSEUNIT:
- *va_arg(ap, u_short *) = td->td_colorresponseunit;
- break;
- case TIFFTAG_COLORRESPONSECURVE:
- *va_arg(ap, u_short **) = td->td_redresponsecurve;
- *va_arg(ap, u_short **) = td->td_greenresponsecurve;
- *va_arg(ap, u_short **) = td->td_blueresponsecurve;
- break;
- case TIFFTAG_COLORMAP:
- *va_arg(ap, u_short **) = td->td_redcolormap;
- *va_arg(ap, u_short **) = td->td_greencolormap;
- *va_arg(ap, u_short **) = td->td_bluecolormap;
- break;
- case TIFFTAG_PREDICTOR:
- *va_arg(ap, u_short *) = td->td_predictor;
- break;
- case TIFFTAG_STRIPOFFSETS:
- *va_arg(ap, u_long **) = td->td_stripoffset;
- break;
- case TIFFTAG_STRIPBYTECOUNTS:
- *va_arg(ap, u_long **) = td->td_stripbytecount;
- break;
- case TIFFTAG_MATTEING:
- *va_arg(ap, u_short *) = td->td_matteing;
- break;
- case TIFFTAG_INKSET:
- *va_arg(ap, u_short *) = td->td_inkset;
- 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_datatype;
- break;
- case TIFFTAG_IMAGEDEPTH:
- *va_arg(ap, u_short *) = td->td_imagedepth;
- break;
- #ifdef JPEG_SUPPORT
- case TIFFTAG_JPEGPROC:
- *va_arg(ap, u_short *) = td->td_jpegproc;
- break;
- case TIFFTAG_JPEGQTABLEPREC:
- *va_arg(ap, u_short *) = td->td_jpegprec;
- break;
- case TIFFTAG_JPEGQTABLES:
- *va_arg(ap, u_short ***) = 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
- }
- va_end(ap);
- }
-
- /*
- * Internal interface to TIFFGetField...
- */
- static
- /*VARARGS2*/
- DECLARE2V(TIFFgetfield, TIFFDirectory*, td, int, tag)
- {
- va_list ap;
-
- VA_START(ap, tag);
- (void) TIFFGetField1(td, tag, ap);
- va_end(ap);
- }
-
- #if USE_PROTOTYPES
- static TIFFSetupShortLong(TIFF *, TIFFDirEntry *, u_short, u_long);
- static TIFFWriteRational(TIFF *, u_short, TIFFDirEntry *, float);
- static TIFFWritePerSampleShorts(TIFF *, u_short, TIFFDirEntry *, short);
- static TIFFWriteStripThing(TIFF *, u_short, TIFFDirEntry *, u_long *);
- #ifdef JPEG_SUPPORT
- static TIFFWriteJPEGQTables(TIFF *, TIFFDirEntry *);
- static TIFFWriteJPEGCTables(TIFF *, u_short, TIFFDirEntry *, u_char **);
- #endif
- static TIFFWriteData(TIFF *, TIFFDirEntry *, char *);
- static TIFFLinkDirectory(TIFF *);
- #else
- static TIFFSetupShortLong();
- static TIFFWriteRational();
- static TIFFWritePerSampleShorts();
- static TIFFWriteStripThing();
- #ifdef JPEG_SUPPORT
- static TIFFWriteJPEGQTables();
- static TIFFWriteJPEGCTables();
- #endif
- static TIFFWriteData();
- static TIFFLinkDirectory();
- #endif
-
- #define WriteRationalPair(tag1, v1, tag2, v2) \
- (TIFFWriteRational(tif, tag1, dir++, v1) && \
- TIFFWriteRational(tif, tag2, dir++, v2))
-
- static long dataoff;
- /*
- * Write the contents of the current directory
- * to the specified file. This routine doesn't
- * handle overwriting a directory with auxiliary
- * storage that's been changed.
- */
- TIFFWriteDirectory(tif)
- TIFF *tif;
- {
- short dircount, v;
- int nfields, dirsize;
- char *data, *cp;
- TIFFFieldInfo *fip;
- TIFFDirEntry *dir;
- TIFFDirectory *td;
- u_long b, off, fields[sizeof (td->td_fieldsset) / sizeof (u_long)];
-
- if (tif->tif_mode == O_RDONLY)
- return (1);
- /*
- * Clear write state so that subsequent images with
- * different characteristics get the right buffers
- * setup for them.
- */
- if (tif->tif_close)
- (*tif->tif_close)(tif);
- if (tif->tif_cleanup)
- (*tif->tif_cleanup)(tif);
- /*
- * Flush any data that might have been written
- * by the compression close+cleanup routines.
- */
- if (tif->tif_rawcc > 0 && !TIFFFlushData1(tif)) {
- TIFFError(tif->tif_name,
- "Error flushing data before directory write");
- return (0);
- }
- if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
- free(tif->tif_rawdata);
- tif->tif_rawdata = NULL;
- tif->tif_rawcc = 0;
- }
- tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP);
-
- td = &tif->tif_dir;
- /*
- * Size the directory so that we can calculate
- * offsets for the data items that aren't kept
- * in-place in each field.
- */
- nfields = 0;
- for (b = 0; b <= FIELD_LAST; b++)
- if (TIFFFieldSet(tif, b))
- nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
- dirsize = nfields * sizeof (TIFFDirEntry);
- data = malloc(dirsize);
- if (data == NULL) {
- TIFFError(tif->tif_name,
- "Cannot write directory, out of space");
- return (0);
- }
- /*
- * Directory hasn't been placed yet, put
- * it at the end of the file and link it
- * into the existing directory structure.
- */
- if (tif->tif_diroff == 0 && !TIFFLinkDirectory(tif))
- return (0);
- dataoff = tif->tif_diroff + sizeof (short) + dirsize + sizeof (long);
- if (dataoff & 1)
- dataoff++;
- (void) lseek(tif->tif_fd, dataoff, L_SET);
- dir = (TIFFDirEntry *)data;
- /*
- * Setup external form of directory
- * entries and write data items.
- */
- bcopy(td->td_fieldsset, fields, sizeof (fields));
- for (fip = FieldInfo; fip < &FieldInfo[NFIELDINFO]; fip++) {
- if (fip->field_bit == (u_short)-1 ||
- !FieldSet(fields, fip->field_bit))
- continue;
- if (fip->field_type == TIFF_ASCII) {
- TIFFgetfield(td, fip->field_tag, &cp);
- dir->tdir_tag = fip->field_tag;
- dir->tdir_type = (short)TIFF_ASCII;
- dir->tdir_count = strlen(cp) + 1;
- if (!TIFFWriteData(tif, dir++, cp))
- goto bad;
- ResetFieldBit(fields, fip->field_bit);
- continue;
- }
- switch (fip->field_bit) {
- case FIELD_STRIPOFFSETS:
- case FIELD_STRIPBYTECOUNTS:
- if (!TIFFWriteStripThing(tif,
- fip->field_tag, dir++,
- fip->field_bit == FIELD_STRIPOFFSETS ?
- td->td_stripoffset : td->td_stripbytecount))
- goto bad;
- break;
- case FIELD_GRAYRESPONSECURVE:
- dir->tdir_tag = fip->field_tag;
- dir->tdir_type = (short)TIFF_SHORT;
- dir->tdir_count = 1L<<td->td_bitspersample;
- #define WRITE(x) TIFFWriteData(tif, dir, (char*) x)
- if (!WRITE(td->td_grayresponsecurve))
- goto bad;
- dir++;
- break;
- case FIELD_COLORRESPONSECURVE:
- case FIELD_COLORMAP:
- dir->tdir_tag = fip->field_tag;
- dir->tdir_type = (short)TIFF_SHORT;
- /* XXX -- yech, fool TIFFWriteData */
- dir->tdir_count = 1L<<td->td_bitspersample;
- off = dataoff;
- if (fip->field_tag == TIFFTAG_COLORMAP) {
- if (!WRITE(td->td_redcolormap) ||
- !WRITE(td->td_greencolormap) ||
- !WRITE(td->td_bluecolormap))
- goto bad;
- } else {
- if (!WRITE(td->td_redresponsecurve) ||
- !WRITE(td->td_greenresponsecurve) ||
- !WRITE(td->td_blueresponsecurve))
- goto bad;
- }
- #undef WRITE
- dir->tdir_count *= 3;
- dir->tdir_offset = off;
- dir++;
- break;
- case FIELD_IMAGEDIMENSIONS:
- TIFFSetupShortLong(tif, dir++,
- TIFFTAG_IMAGEWIDTH, td->td_imagewidth);
- TIFFSetupShortLong(tif, dir++,
- TIFFTAG_IMAGELENGTH, td->td_imagelength);
- break;
- case FIELD_TILEDIMENSIONS:
- TIFFSetupShortLong(tif, dir++,
- TIFFTAG_TILEWIDTH, td->td_tilewidth);
- TIFFSetupShortLong(tif, dir++,
- TIFFTAG_TILELENGTH, td->td_tilelength);
- break;
- case FIELD_POSITION:
- if (!WriteRationalPair(
- TIFFTAG_XPOSITION, td->td_xposition,
- TIFFTAG_YPOSITION, td->td_yposition))
- goto bad;
- break;
- case FIELD_RESOLUTION:
- if (!WriteRationalPair(
- TIFFTAG_XRESOLUTION, td->td_xresolution,
- TIFFTAG_YRESOLUTION, td->td_yresolution))
- goto bad;
- break;
- case FIELD_BITSPERSAMPLE:
- case FIELD_MINSAMPLEVALUE:
- case FIELD_MAXSAMPLEVALUE:
- case FIELD_DATATYPE:
- TIFFgetfield(td, fip->field_tag, &v);
- if (!TIFFWritePerSampleShorts(tif, fip->field_tag,
- dir++, v))
- goto bad;
- break;
- case FIELD_PAGENUMBER: {
- short v1, v2;
- dir->tdir_tag = TIFFTAG_PAGENUMBER;
- dir->tdir_type = (short)TIFF_SHORT;
- dir->tdir_count = 2;
- TIFFgetfield(td, TIFFTAG_PAGENUMBER, &v1, &v2);
- if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN)
- dir->tdir_offset = (v1 << 16) | (v2 & 0xffff);
- else
- dir->tdir_offset = (v2 << 16) | (v1 & 0xffff);
- dir++;
- break;
- #ifdef JPEG_SUPPORT
- case FIELD_JPEGQTABLES:
- if (!TIFFWriteJPEGQTables(tif, dir))
- goto bad;
- break;
- case FIELD_JPEGDCTABLES:
- if (!TIFFWriteJPEGCTables(tif,
- TIFFTAG_JPEGDCTABLES, dir, td->td_dctab))
- goto bad;
- break;
- case FIELD_JPEGACTABLES:
- if (!TIFFWriteJPEGCTables(tif,
- TIFFTAG_JPEGACTABLES, dir, td->td_actab))
- goto bad;
- break;
- #endif
- }
- default:
- dir->tdir_tag = fip->field_tag;
- dir->tdir_type = (u_short)fip->field_type;
- dir->tdir_count = fip->field_count;
- if (fip->field_type == TIFF_SHORT) {
- TIFFgetfield(td, fip->field_tag, &v);
- dir->tdir_offset =
- TIFFInsertData(tif, dir->tdir_type, v);
- } else
- TIFFgetfield(td, fip->field_tag,
- &dir->tdir_offset);
- dir++;
- break;
- }
- ResetFieldBit(fields, fip->field_bit);
- }
- /*
- * Write directory.
- */
- (void) lseek(tif->tif_fd, tif->tif_diroff, L_SET);
- dircount = nfields;
- if (!WriteOK(tif->tif_fd, &dircount, sizeof (short))) {
- TIFFError(tif->tif_name, "Error writing directory count");
- goto bad;
- }
- if (!WriteOK(tif->tif_fd, data, dirsize)) {
- TIFFError(tif->tif_name, "Error writing directory contents");
- goto bad;
- }
- if (!WriteOK(tif->tif_fd, &tif->tif_nextdiroff, sizeof (long))) {
- TIFFError(tif->tif_name, "Error writing directory link");
- goto bad;
- }
- TIFFFreeDirectory(tif);
- free(data);
- tif->tif_flags &= ~TIFF_DIRTYDIRECT;
-
- /*
- * Reset directory-related state for subsequent
- * directories.
- */
- TIFFDefaultDirectory(tif);
- tif->tif_diroff = 0;
- tif->tif_curoff = 0;
- tif->tif_row = -1;
- tif->tif_curstrip = -1;
- return (1);
- bad:
- free(data);
- return (0);
- }
- #undef WriteRationalPair
-
- /*
- * Setup a directory entry with either a SHORT
- * or LONG type according to the value.
- */
- static
- DECLARE4(TIFFSetupShortLong,
- TIFF*, tif, TIFFDirEntry*, dir, u_short, tag, u_long, v)
- {
- dir->tdir_tag = tag;
- dir->tdir_count = 1;
- if (v > 0xffffL) {
- dir->tdir_type = (short)TIFF_LONG;
- dir->tdir_offset = v;
- } else {
- dir->tdir_type = (short)TIFF_SHORT;
- dir->tdir_offset = TIFFInsertData(tif, (int)TIFF_SHORT, v);
- }
- }
- #undef MakeShortDirent
-
- /*
- * Setup a RATIONAL directory entry and
- * write the associated indirect value.
- */
- static
- DECLARE4(TIFFWriteRational,
- TIFF*, tif, u_short, tag, TIFFDirEntry*, dir, float, v)
- {
- long t[2];
-
- dir->tdir_tag = tag;
- dir->tdir_type = (short)TIFF_RATIONAL;
- dir->tdir_count = 1;
- /* need algorithm to convert ... XXX */
- t[0] = v * 10000.0;
- t[1] = 10000;
- return (TIFFWriteData(tif, dir, (char *)t));
- }
-
- /*
- * Setup a directory entry that references a
- * samples/pixel array of SHORT values and
- * (potentially) write the associated indirect
- * values.
- */
- static
- DECLARE4(TIFFWritePerSampleShorts,
- TIFF*, tif, u_short, tag, TIFFDirEntry*, dir, short, v)
- {
- short w[4];
- int i, samplesperpixel = tif->tif_dir.td_samplesperpixel;
-
- dir->tdir_tag = tag;
- dir->tdir_type = (short)TIFF_SHORT;
- dir->tdir_count = samplesperpixel;
- if (samplesperpixel <= 2) {
- if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
- dir->tdir_offset = (long)v << 16;
- if (samplesperpixel == 2)
- dir->tdir_offset |= v & 0xffff;
- } else {
- dir->tdir_offset = v & 0xffff;
- if (samplesperpixel == 2)
- dir->tdir_offset |= (long)v << 16;
- }
- return (1);
- }
- for (i = 0; i < samplesperpixel; i++)
- w[i] = v;
- return (TIFFWriteData(tif, dir, (char *)w));
- }
-
- /*
- * Setup a directory entry of strip or
- * tile offsets or lengths and write the
- * associated indirect values.
- */
- static
- DECLARE4(TIFFWriteStripThing,
- TIFF*, tif, u_short, tag, TIFFDirEntry*, dir, u_long*, lp)
- {
-
- dir->tdir_tag = tag;
- dir->tdir_type = (short)TIFF_LONG; /* XXX */
- dir->tdir_count = tif->tif_dir.td_nstrips;
- if (dir->tdir_count > 1)
- return (TIFFWriteData(tif, dir, (char *)lp));
- dir->tdir_offset = *lp;
- return (1);
- }
-
- #ifdef JPEG_SUPPORT
- /*
- * Setup a directory entry for JPEG Quantization
- * tables and write the associated indirect values.
- */
- static
- DECLARE2(TIFFWriteJPEGQTables, TIFF*, tif, TIFFDirEntry*, dir)
- {
- TIFFDirectory *td = &tif->tif_dir;
- TIFFDirEntry tdir;
- u_short **qtab;
- u_long off[4];
- int i;
-
- dir->tdir_tag = TIFFTAG_JPEGQTABLES;
- dir->tdir_type = (short)TIFF_LONG;
- dir->tdir_count = td->td_samplesperpixel;
- qtab = td->td_qtab;
- tdir.tdir_tag = TIFFTAG_JPEGQTABLES; /* for diagnostics */
- tdir.tdir_type = (short)
- (td->td_jpegprec == JPEGQTABLEPREC_8BIT ? TIFF_BYTE : TIFF_SHORT);
- tdir.tdir_count = 64;
- for (i = 0; i < dir->tdir_count; i++) {
- if (tdir.tdir_type == TIFF_BYTE) {
- char v[64];
- int j;
-
- for (j = 0; j < 64; j++)
- v[j] = qtab[i][j];
- if (!TIFFWriteData(tif, &tdir, v))
- return (0);
- } else if (!TIFFWriteData(tif, &tdir, (char *)qtab[i]))
- return (0);
- off[i] = tdir.tdir_offset;
- }
- return (TIFFWriteData(tif, dir, (char *)off));
- }
-
- /*
- * Setup a directory entry for JPEG Coefficient
- * tables and write the associated indirect values.
- */
- static
- DECLARE4(TIFFWriteJPEGCTables,
- TIFF*, tif, u_short, tag, TIFFDirEntry*, dir, u_char **, tab)
- {
- TIFFDirectory *td = &tif->tif_dir;
- TIFFDirEntry tdir;
- u_long off[4];
- int i, j, ncodes;
-
- dir->tdir_tag = tag;
- dir->tdir_type = (short)TIFF_LONG;
- dir->tdir_count = td->td_samplesperpixel;
- tdir.tdir_tag = tag; /* for diagnostics */
- tdir.tdir_type = (short)TIFF_BYTE;
- for (i = 0; i < dir->tdir_count; i++) {
- for (ncodes = 0, j = 0; j < 16; j++)
- ncodes += tab[i][j];
- tdir.tdir_count = 16+ncodes;
- if (!TIFFWriteData(tif, &tdir, (char *)tab[i]))
- return (0);
- off[i] = tdir.tdir_offset;
- }
- return (TIFFWriteData(tif, dir, (char *)off));
- }
- #endif
-
- /*
- * Write a contiguous directory item.
- */
- static
- TIFFWriteData(tif, dir, cp)
- TIFF *tif;
- TIFFDirEntry *dir;
- char *cp;
- {
- int cc;
-
- dir->tdir_offset = dataoff;
- cc = dir->tdir_count * datawidth[dir->tdir_type];
- if (SeekOK(tif->tif_fd, dir->tdir_offset) &&
- WriteOK(tif->tif_fd, cp, cc)) {
- dataoff += (cc + 1) & ~1;
- return (1);
- }
- TIFFError(tif->tif_name, "Error writing data for field \"%s\"",
- FieldWithTag(dir->tdir_tag)->field_name);
- return (0);
- }
-
- /*
- * Link the current directory into the
- * directory chain for the file.
- */
- static
- TIFFLinkDirectory(tif)
- register TIFF *tif;
- {
- static char module[] = "TIFFLinkDirectory";
- u_short dircount;
- long nextdir;
-
- tif->tif_diroff = (lseek(tif->tif_fd, 0L, L_XTND)+1) &~ 1L;
- if (tif->tif_header.tiff_diroff == 0) {
- /*
- * First directory, overwrite header.
- */
- tif->tif_header.tiff_diroff = tif->tif_diroff;
- (void) lseek(tif->tif_fd, 0L, L_SET);
- if (!WriteOK(tif->tif_fd, &tif->tif_header,
- sizeof (tif->tif_header))) {
- TIFFError(tif->tif_name, "Error writing TIFF header");
- return (0);
- }
- return (1);
- }
- /*
- * Not the first directory, search to the last and append.
- */
- nextdir = tif->tif_header.tiff_diroff;
- do {
- if (!SeekOK(tif->tif_fd, nextdir) ||
- !ReadOK(tif->tif_fd, &dircount, sizeof (dircount))) {
- TIFFError(module, "Error fetching directory count");
- return (0);
- }
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabShort(&dircount);
- lseek(tif->tif_fd, dircount * sizeof (TIFFDirEntry), L_INCR);
- if (!ReadOK(tif->tif_fd, &nextdir, sizeof (nextdir))) {
- TIFFError(module, "Error fetching directory link");
- return (0);
- }
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabLong((u_long *)&nextdir);
- } while (nextdir != 0);
- (void) lseek(tif->tif_fd, -sizeof (nextdir), L_INCR);
- if (!WriteOK(tif->tif_fd, &tif->tif_diroff, sizeof (tif->tif_diroff))) {
- TIFFError(module, "Error writing directory link");
- return (0);
- }
- return (1);
- }
-
- /*
- * Set the n-th directory as the current directory.
- * NB: Directories are numbered starting at 0.
- */
- TIFFSetDirectory(tif, n)
- register TIFF *tif;
- int n;
- {
- static char module[] = "TIFFSetDirectory";
- u_short dircount;
- long nextdir;
-
- nextdir = tif->tif_header.tiff_diroff;
- while (n-- > 0 && nextdir != 0) {
- if (!SeekOK(tif->tif_fd, nextdir) ||
- !ReadOK(tif->tif_fd, &dircount, sizeof (dircount))) {
- TIFFError(module, "%s: Error fetching directory count",
- tif->tif_name);
- return (0);
- }
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabShort(&dircount);
- lseek(tif->tif_fd, dircount*sizeof (TIFFDirEntry), L_INCR);
- if (!ReadOK(tif->tif_fd, &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;
- return (TIFFReadDirectory(tif));
- }
-