diff options
Diffstat (limited to 'plugins/FreeImage/src/LibTIFF/tif_dirwrite.c')
| -rw-r--r-- | plugins/FreeImage/src/LibTIFF/tif_dirwrite.c | 1436 |
1 files changed, 1436 insertions, 0 deletions
diff --git a/plugins/FreeImage/src/LibTIFF/tif_dirwrite.c b/plugins/FreeImage/src/LibTIFF/tif_dirwrite.c new file mode 100644 index 0000000000..962937298e --- /dev/null +++ b/plugins/FreeImage/src/LibTIFF/tif_dirwrite.c @@ -0,0 +1,1436 @@ +/* $Id: tif_dirwrite.c,v 1.37 2011/04/10 17:14:09 drolon 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 Write Support Routines.
+ */
+#include "tiffiop.h"
+
+#ifdef HAVE_IEEEFP
+# define TIFFCvtNativeToIEEEFloat(tif, n, fp)
+# define TIFFCvtNativeToIEEEDouble(tif, n, dp)
+#else
+extern void TIFFCvtNativeToIEEEFloat(TIFF*, uint32, float*);
+extern void TIFFCvtNativeToIEEEDouble(TIFF*, uint32, double*);
+#endif
+
+static int TIFFWriteNormalTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*);
+static void TIFFSetupShortLong(TIFF*, ttag_t, TIFFDirEntry*, uint32);
+static void TIFFSetupShort(TIFF*, ttag_t, TIFFDirEntry*, uint16);
+static int TIFFSetupBytePair(TIFF*, ttag_t, TIFFDirEntry*);
+static int TIFFSetupShortPair(TIFF*, ttag_t, TIFFDirEntry*);
+static int TIFFWritePerSampleShorts(TIFF*, ttag_t, TIFFDirEntry*);
+static int TIFFWritePerSampleAnys(TIFF*, TIFFDataType, ttag_t, TIFFDirEntry*);
+static int TIFFWriteShortTable(TIFF*, ttag_t, TIFFDirEntry*, uint32, uint16**);
+static int TIFFWriteShortArray(TIFF*, TIFFDirEntry*, uint16*);
+static int TIFFWriteLongArray(TIFF *, TIFFDirEntry*, uint32*);
+static int TIFFWriteRationalArray(TIFF *, TIFFDirEntry*, float*);
+static int TIFFWriteFloatArray(TIFF *, TIFFDirEntry*, float*);
+static int TIFFWriteDoubleArray(TIFF *, TIFFDirEntry*, double*);
+static int TIFFWriteByteArray(TIFF*, TIFFDirEntry*, char*);
+static int TIFFWriteAnyArray(TIFF*,
+ TIFFDataType, ttag_t, TIFFDirEntry*, uint32, double*);
+static int TIFFWriteTransferFunction(TIFF*, TIFFDirEntry*);
+static int TIFFWriteInkNames(TIFF*, TIFFDirEntry*);
+static int TIFFWriteData(TIFF*, TIFFDirEntry*, char*);
+static int TIFFLinkDirectory(TIFF*);
+
+#define WriteRationalPair(type, tag1, v1, tag2, v2) { \
+ TIFFWriteRational((tif), (type), (tag1), (dir), (v1)) \
+ TIFFWriteRational((tif), (type), (tag2), (dir)+1, (v2)) \
+ (dir)++; \
+}
+#define TIFFWriteRational(tif, type, tag, dir, v) \
+ (dir)->tdir_tag = (tag); \
+ (dir)->tdir_type = (type); \
+ (dir)->tdir_count = 1; \
+ if (!TIFFWriteRationalArray((tif), (dir), &(v))) \
+ goto bad;
+
+/*
+ * 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.
+ */
+static int
+_TIFFWriteDirectory(TIFF* tif, int done)
+{
+ uint16 dircount;
+ toff_t diroff;
+ ttag_t tag;
+ uint32 nfields;
+ tsize_t dirsize;
+ char* data;
+ TIFFDirEntry* dir;
+ TIFFDirectory* td;
+ unsigned long b, fields[FIELD_SETLONGS];
+ int fi, nfi;
+
+ 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 (done)
+ {
+ if (tif->tif_flags & TIFF_POSTENCODE) {
+ tif->tif_flags &= ~TIFF_POSTENCODE;
+ if (!(*tif->tif_postencode)(tif)) {
+ TIFFErrorExt(tif->tif_clientdata,
+ tif->tif_name,
+ "Error post-encoding before directory write");
+ return (0);
+ }
+ }
+ (*tif->tif_close)(tif); /* shutdown encoder */
+ /*
+ * Flush any data that might have been written
+ * by the compression close+cleanup routines.
+ */
+ if (tif->tif_rawcc > 0
+ && (tif->tif_flags & TIFF_BEENWRITING) != 0
+ && !TIFFFlushData1(tif)) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error flushing data before directory write");
+ return (0);
+ }
+ if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
+ _TIFFfree(tif->tif_rawdata);
+ tif->tif_rawdata = NULL;
+ tif->tif_rawcc = 0;
+ tif->tif_rawdatasize = 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) && b != FIELD_CUSTOM)
+ nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
+ nfields += td->td_customValueCount;
+ dirsize = nfields * sizeof (TIFFDirEntry);
+ data = (char*) _TIFFmalloc(dirsize);
+ if (data == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, 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))
+ goto bad;
+ tif->tif_dataoff = (toff_t)(
+ tif->tif_diroff + sizeof (uint16) + dirsize + sizeof (toff_t));
+ if (tif->tif_dataoff & 1)
+ tif->tif_dataoff++;
+ (void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
+ tif->tif_curdir++;
+ dir = (TIFFDirEntry*) data;
+ /*
+ * Setup external form of directory
+ * entries and write data items.
+ */
+ _TIFFmemcpy(fields, td->td_fieldsset, sizeof (fields));
+ /*
+ * Write out ExtraSamples tag only if
+ * extra samples are present in the data.
+ */
+ if (FieldSet(fields, FIELD_EXTRASAMPLES) && !td->td_extrasamples) {
+ ResetFieldBit(fields, FIELD_EXTRASAMPLES);
+ nfields--;
+ dirsize -= sizeof (TIFFDirEntry);
+ } /*XXX*/
+ for (fi = 0, nfi = tif->tif_nfields; nfi > 0; nfi--, fi++) {
+ const TIFFFieldInfo* fip = tif->tif_fieldinfo[fi];
+
+ /*
+ * For custom fields, we test to see if the custom field
+ * is set or not. For normal fields, we just use the
+ * FieldSet test.
+ */
+ if ( fip->field_bit == FIELD_CUSTOM )
+ {
+ int ci, is_set = FALSE;
+
+ for ( ci = 0; ci < td->td_customValueCount; ci++ )
+ is_set |= (td->td_customValues[ci].info == fip);
+
+ if ( !is_set )
+ continue;
+ }
+ else if (!FieldSet(fields, fip->field_bit))
+ continue;
+
+ /*
+ * Handle other fields.
+ */
+ switch (fip->field_bit)
+ {
+ case FIELD_STRIPOFFSETS:
+ /*
+ * We use one field bit for both strip and tile
+
+ * offsets, and so must be careful in selecting
+ * the appropriate field descriptor (so that tags
+ * are written in sorted order).
+ */
+ tag = isTiled(tif) ?
+ TIFFTAG_TILEOFFSETS : TIFFTAG_STRIPOFFSETS;
+ if (tag != fip->field_tag)
+ continue;
+
+ dir->tdir_tag = (uint16) tag;
+ dir->tdir_type = (uint16) TIFF_LONG;
+ dir->tdir_count = (uint32) td->td_nstrips;
+ if (!TIFFWriteLongArray(tif, dir, td->td_stripoffset))
+ goto bad;
+ break;
+ case FIELD_STRIPBYTECOUNTS:
+ /*
+ * We use one field bit for both strip and tile
+ * byte counts, and so must be careful in selecting
+ * the appropriate field descriptor (so that tags
+ * are written in sorted order).
+ */
+ tag = isTiled(tif) ?
+ TIFFTAG_TILEBYTECOUNTS : TIFFTAG_STRIPBYTECOUNTS;
+ if (tag != fip->field_tag)
+ continue;
+
+ dir->tdir_tag = (uint16) tag;
+ dir->tdir_type = (uint16) TIFF_LONG;
+ dir->tdir_count = (uint32) td->td_nstrips;
+ if (!TIFFWriteLongArray(tif, dir, td->td_stripbytecount))
+ goto bad;
+ break;
+ case FIELD_ROWSPERSTRIP:
+ TIFFSetupShortLong(tif, TIFFTAG_ROWSPERSTRIP,
+ dir, td->td_rowsperstrip);
+ break;
+ case FIELD_COLORMAP:
+ if (!TIFFWriteShortTable(tif, TIFFTAG_COLORMAP, dir,
+ 3, td->td_colormap))
+ goto bad;
+ break;
+ case FIELD_IMAGEDIMENSIONS:
+ TIFFSetupShortLong(tif, TIFFTAG_IMAGEWIDTH,
+ dir++, td->td_imagewidth);
+ TIFFSetupShortLong(tif, TIFFTAG_IMAGELENGTH,
+ dir, td->td_imagelength);
+ break;
+ case FIELD_TILEDIMENSIONS:
+ TIFFSetupShortLong(tif, TIFFTAG_TILEWIDTH,
+ dir++, td->td_tilewidth);
+ TIFFSetupShortLong(tif, TIFFTAG_TILELENGTH,
+ dir, td->td_tilelength);
+ break;
+ case FIELD_COMPRESSION:
+ TIFFSetupShort(tif, TIFFTAG_COMPRESSION,
+ dir, td->td_compression);
+ break;
+ case FIELD_PHOTOMETRIC:
+ TIFFSetupShort(tif, TIFFTAG_PHOTOMETRIC,
+ dir, td->td_photometric);
+ break;
+ case FIELD_POSITION:
+ WriteRationalPair(TIFF_RATIONAL,
+ TIFFTAG_XPOSITION, td->td_xposition,
+ TIFFTAG_YPOSITION, td->td_yposition);
+ break;
+ case FIELD_RESOLUTION:
+ WriteRationalPair(TIFF_RATIONAL,
+ TIFFTAG_XRESOLUTION, td->td_xresolution,
+ TIFFTAG_YRESOLUTION, td->td_yresolution);
+ break;
+ case FIELD_BITSPERSAMPLE:
+ case FIELD_MINSAMPLEVALUE:
+ case FIELD_MAXSAMPLEVALUE:
+ case FIELD_SAMPLEFORMAT:
+ if (!TIFFWritePerSampleShorts(tif, fip->field_tag, dir))
+ goto bad;
+ break;
+ case FIELD_SMINSAMPLEVALUE:
+ case FIELD_SMAXSAMPLEVALUE:
+ if (!TIFFWritePerSampleAnys(tif,
+ _TIFFSampleToTagType(tif), fip->field_tag, dir))
+ goto bad;
+ break;
+ case FIELD_INKNAMES:
+ if (!TIFFWriteInkNames(tif, dir))
+ goto bad;
+ break;
+ case FIELD_TRANSFERFUNCTION:
+ if (!TIFFWriteTransferFunction(tif, dir))
+ goto bad;
+ break;
+ case FIELD_SUBIFD:
+ /*
+ * XXX: Always write this field using LONG type
+ * for backward compatibility.
+ */
+ dir->tdir_tag = (uint16) fip->field_tag;
+ dir->tdir_type = (uint16) TIFF_LONG;
+ dir->tdir_count = (uint32) td->td_nsubifd;
+ if (!TIFFWriteLongArray(tif, dir, td->td_subifd))
+ goto bad;
+ /*
+ * Total hack: if this directory includes a SubIFD
+ * tag then force the next <n> directories to be
+ * written as ``sub directories'' of this one. This
+ * is used to write things like thumbnails and
+ * image masks that one wants to keep out of the
+ * normal directory linkage access mechanism.
+ */
+ if (dir->tdir_count > 0) {
+ tif->tif_flags |= TIFF_INSUBIFD;
+ tif->tif_nsubifd = (uint16) dir->tdir_count;
+ if (dir->tdir_count > 1)
+ tif->tif_subifdoff = dir->tdir_offset;
+ else
+ tif->tif_subifdoff = (uint32)(
+ tif->tif_diroff
+ + sizeof (uint16)
+ + ((char*)&dir->tdir_offset-data));
+ }
+ break;
+ default:
+ /*
+ * XXX: Should be fixed and removed. See comments
+ * related to these tags in tif_dir.c.
+ */
+ if (fip->field_tag == TIFFTAG_PAGENUMBER
+ || fip->field_tag == TIFFTAG_HALFTONEHINTS
+ || fip->field_tag == TIFFTAG_YCBCRSUBSAMPLING
+ || fip->field_tag == TIFFTAG_DOTRANGE) {
+ if (fip->field_type == TIFF_BYTE) {
+ if (!TIFFSetupBytePair(tif, fip->field_tag, dir))
+ goto bad;
+ } else if (fip->field_type == TIFF_SHORT) {
+ if (!TIFFSetupShortPair(tif, fip->field_tag, dir))
+ goto bad;
+ }
+ } else if (!TIFFWriteNormalTag(tif, dir, fip))
+ goto bad;
+ break;
+ }
+ dir++;
+
+ if ( fip->field_bit != FIELD_CUSTOM )
+ ResetFieldBit(fields, fip->field_bit);
+ }
+
+ /*
+ * Write directory.
+ */
+ dircount = (uint16) nfields;
+ diroff = (uint32) tif->tif_nextdiroff;
+ if (tif->tif_flags & TIFF_SWAB) {
+ /*
+ * The file's byte order is opposite to the
+ * native machine architecture. We overwrite
+ * the directory information with impunity
+ * because it'll be released below after we
+ * write it to the file. Note that all the
+ * other tag construction routines assume that
+ * we do this byte-swapping; i.e. they only
+ * byte-swap indirect data.
+ */
+ for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) {
+ TIFFSwabArrayOfShort(&dir->tdir_tag, 2);
+ TIFFSwabArrayOfLong(&dir->tdir_count, 2);
+ }
+ dircount = (uint16) nfields;
+ TIFFSwabShort(&dircount);
+ TIFFSwabLong(&diroff);
+ }
+ (void) TIFFSeekFile(tif, tif->tif_diroff, SEEK_SET);
+ if (!WriteOK(tif, &dircount, sizeof (dircount))) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error writing directory count");
+ goto bad;
+ }
+ if (!WriteOK(tif, data, dirsize)) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error writing directory contents");
+ goto bad;
+ }
+ if (!WriteOK(tif, &diroff, sizeof (uint32))) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error writing directory link");
+ goto bad;
+ }
+ if (done) {
+ TIFFFreeDirectory(tif);
+ tif->tif_flags &= ~TIFF_DIRTYDIRECT;
+ (*tif->tif_cleanup)(tif);
+
+ /*
+ * Reset directory-related state for subsequent
+ * directories.
+ */
+ TIFFCreateDirectory(tif);
+ }
+ _TIFFfree(data);
+ return (1);
+bad:
+ _TIFFfree(data);
+ return (0);
+}
+#undef WriteRationalPair
+
+int
+TIFFWriteDirectory(TIFF* tif)
+{
+ return _TIFFWriteDirectory(tif, TRUE);
+}
+
+/*
+ * Similar to TIFFWriteDirectory(), writes the directory out
+ * but leaves all data structures in memory so that it can be
+ * written again. This will make a partially written TIFF file
+ * readable before it is successfully completed/closed.
+ */
+int
+TIFFCheckpointDirectory(TIFF* tif)
+{
+ int rc;
+ /* Setup the strips arrays, if they haven't already been. */
+ if (tif->tif_dir.td_stripoffset == NULL)
+ (void) TIFFSetupStrips(tif);
+ rc = _TIFFWriteDirectory(tif, FALSE);
+ (void) TIFFSetWriteOffset(tif, TIFFSeekFile(tif, 0, SEEK_END));
+ return rc;
+}
+
+static int
+_TIFFWriteCustomDirectory(TIFF* tif, toff_t *pdiroff)
+{
+ uint16 dircount;
+ uint32 nfields;
+ tsize_t dirsize;
+ char* data;
+ TIFFDirEntry* dir;
+ TIFFDirectory* td;
+ unsigned long b, fields[FIELD_SETLONGS];
+ int fi, nfi;
+
+ if (tif->tif_mode == O_RDONLY)
+ return (1);
+
+ 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) && b != FIELD_CUSTOM)
+ nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
+ nfields += td->td_customValueCount;
+ dirsize = nfields * sizeof (TIFFDirEntry);
+ data = (char*) _TIFFmalloc(dirsize);
+ if (data == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Cannot write directory, out of space");
+ return (0);
+ }
+ /*
+ * Put the directory at the end of the file.
+ */
+ tif->tif_diroff = (TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1;
+ tif->tif_dataoff = (toff_t)(
+ tif->tif_diroff + sizeof (uint16) + dirsize + sizeof (toff_t));
+ if (tif->tif_dataoff & 1)
+ tif->tif_dataoff++;
+ (void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
+ dir = (TIFFDirEntry*) data;
+ /*
+ * Setup external form of directory
+ * entries and write data items.
+ */
+ _TIFFmemcpy(fields, td->td_fieldsset, sizeof (fields));
+
+ for (fi = 0, nfi = tif->tif_nfields; nfi > 0; nfi--, fi++) {
+ const TIFFFieldInfo* fip = tif->tif_fieldinfo[fi];
+
+ /*
+ * For custom fields, we test to see if the custom field
+ * is set or not. For normal fields, we just use the
+ * FieldSet test.
+ */
+ if ( fip->field_bit == FIELD_CUSTOM )
+ {
+ int ci, is_set = FALSE;
+
+ for ( ci = 0; ci < td->td_customValueCount; ci++ )
+ is_set |= (td->td_customValues[ci].info == fip);
+
+ if ( !is_set )
+ continue;
+ }
+ else if (!FieldSet(fields, fip->field_bit))
+ continue;
+
+ if ( fip->field_bit != FIELD_CUSTOM )
+ ResetFieldBit(fields, fip->field_bit);
+ }
+
+ /*
+ * Write directory.
+ */
+ dircount = (uint16) nfields;
+ *pdiroff = (uint32) tif->tif_nextdiroff;
+ if (tif->tif_flags & TIFF_SWAB) {
+ /*
+ * The file's byte order is opposite to the
+ * native machine architecture. We overwrite
+ * the directory information with impunity
+ * because it'll be released below after we
+ * write it to the file. Note that all the
+ * other tag construction routines assume that
+ * we do this byte-swapping; i.e. they only
+ * byte-swap indirect data.
+ */
+ for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) {
+ TIFFSwabArrayOfShort(&dir->tdir_tag, 2);
+ TIFFSwabArrayOfLong(&dir->tdir_count, 2);
+ }
+ dircount = (uint16) nfields;
+ TIFFSwabShort(&dircount);
+ TIFFSwabLong(pdiroff);
+ }
+ (void) TIFFSeekFile(tif, tif->tif_diroff, SEEK_SET);
+ if (!WriteOK(tif, &dircount, sizeof (dircount))) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error writing directory count");
+ goto bad;
+ }
+ if (!WriteOK(tif, data, dirsize)) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error writing directory contents");
+ goto bad;
+ }
+ if (!WriteOK(tif, pdiroff, sizeof (uint32))) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error writing directory link");
+ goto bad;
+ }
+ _TIFFfree(data);
+ return (1);
+bad:
+ _TIFFfree(data);
+ return (0);
+}
+
+int
+TIFFWriteCustomDirectory(TIFF* tif, toff_t *pdiroff)
+{
+ return _TIFFWriteCustomDirectory(tif, pdiroff);
+}
+
+/*
+ * Process tags that are not special cased.
+ */
+static int
+TIFFWriteNormalTag(TIFF* tif, TIFFDirEntry* dir, const TIFFFieldInfo* fip)
+{
+ uint16 wc = (uint16) fip->field_writecount;
+ uint32 wc2;
+
+ dir->tdir_tag = (uint16) fip->field_tag;
+ dir->tdir_type = (uint16) fip->field_type;
+ dir->tdir_count = wc;
+
+ switch (fip->field_type) {
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ if (fip->field_passcount) {
+ uint16* wp;
+ if (wc == (uint16) TIFF_VARIABLE2) {
+ TIFFGetField(tif, fip->field_tag, &wc2, &wp);
+ dir->tdir_count = wc2;
+ } else { /* Assume TIFF_VARIABLE */
+ TIFFGetField(tif, fip->field_tag, &wc, &wp);
+ dir->tdir_count = wc;
+ }
+ if (!TIFFWriteShortArray(tif, dir, wp))
+ return 0;
+ } else {
+ if (wc == 1) {
+ uint16 sv;
+ TIFFGetField(tif, fip->field_tag, &sv);
+ dir->tdir_offset =
+ TIFFInsertData(tif, dir->tdir_type, sv);
+ } else {
+ uint16* wp;
+ TIFFGetField(tif, fip->field_tag, &wp);
+ if (!TIFFWriteShortArray(tif, dir, wp))
+ return 0;
+ }
+ }
+ break;
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_IFD:
+ if (fip->field_passcount) {
+ uint32* lp;
+ if (wc == (uint16) TIFF_VARIABLE2) {
+ TIFFGetField(tif, fip->field_tag, &wc2, &lp);
+ dir->tdir_count = wc2;
+ } else { /* Assume TIFF_VARIABLE */
+ TIFFGetField(tif, fip->field_tag, &wc, &lp);
+ dir->tdir_count = wc;
+ }
+ if (!TIFFWriteLongArray(tif, dir, lp))
+ return 0;
+ } else {
+ if (wc == 1) {
+ /* XXX handle LONG->SHORT conversion */
+ TIFFGetField(tif, fip->field_tag,
+ &dir->tdir_offset);
+ } else {
+ uint32* lp;
+ TIFFGetField(tif, fip->field_tag, &lp);
+ if (!TIFFWriteLongArray(tif, dir, lp))
+ return 0;
+ }
+ }
+ break;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ if (fip->field_passcount) {
+ float* fp;
+ if (wc == (uint16) TIFF_VARIABLE2) {
+ TIFFGetField(tif, fip->field_tag, &wc2, &fp);
+ dir->tdir_count = wc2;
+ } else { /* Assume TIFF_VARIABLE */
+ TIFFGetField(tif, fip->field_tag, &wc, &fp);
+ dir->tdir_count = wc;
+ }
+ if (!TIFFWriteRationalArray(tif, dir, fp))
+ return 0;
+ } else {
+ if (wc == 1) {
+ float fv;
+ TIFFGetField(tif, fip->field_tag, &fv);
+ if (!TIFFWriteRationalArray(tif, dir, &fv))
+ return 0;
+ } else {
+ float* fp;
+ TIFFGetField(tif, fip->field_tag, &fp);
+ if (!TIFFWriteRationalArray(tif, dir, fp))
+ return 0;
+ }
+ }
+ break;
+ case TIFF_FLOAT:
+ if (fip->field_passcount) {
+ float* fp;
+ if (wc == (uint16) TIFF_VARIABLE2) {
+ TIFFGetField(tif, fip->field_tag, &wc2, &fp);
+ dir->tdir_count = wc2;
+ } else { /* Assume TIFF_VARIABLE */
+ TIFFGetField(tif, fip->field_tag, &wc, &fp);
+ dir->tdir_count = wc;
+ }
+ if (!TIFFWriteFloatArray(tif, dir, fp))
+ return 0;
+ } else {
+ if (wc == 1) {
+ float fv;
+ TIFFGetField(tif, fip->field_tag, &fv);
+ if (!TIFFWriteFloatArray(tif, dir, &fv))
+ return 0;
+ } else {
+ float* fp;
+ TIFFGetField(tif, fip->field_tag, &fp);
+ if (!TIFFWriteFloatArray(tif, dir, fp))
+ return 0;
+ }
+ }
+ break;
+ case TIFF_DOUBLE:
+ if (fip->field_passcount) {
+ double* dp;
+ if (wc == (uint16) TIFF_VARIABLE2) {
+ TIFFGetField(tif, fip->field_tag, &wc2, &dp);
+ dir->tdir_count = wc2;
+ } else { /* Assume TIFF_VARIABLE */
+ TIFFGetField(tif, fip->field_tag, &wc, &dp);
+ dir->tdir_count = wc;
+ }
+ if (!TIFFWriteDoubleArray(tif, dir, dp))
+ return 0;
+ } else {
+ if (wc == 1) {
+ double dv;
+ TIFFGetField(tif, fip->field_tag, &dv);
+ if (!TIFFWriteDoubleArray(tif, dir, &dv))
+ return 0;
+ } else {
+ double* dp;
+ TIFFGetField(tif, fip->field_tag, &dp);
+ if (!TIFFWriteDoubleArray(tif, dir, dp))
+ return 0;
+ }
+ }
+ break;
+ case TIFF_ASCII:
+ {
+ char* cp;
+ if (fip->field_passcount)
+ {
+ if ( wc == (uint16) TIFF_VARIABLE2 )
+ TIFFGetField(tif, fip->field_tag, &wc2, &cp);
+ else
+ TIFFGetField(tif, fip->field_tag, &wc, &cp);
+ }
+ else
+ TIFFGetField(tif, fip->field_tag, &cp);
+
+ dir->tdir_count = (uint32) (strlen(cp) + 1);
+ if (!TIFFWriteByteArray(tif, dir, cp))
+ return (0);
+ }
+ break;
+
+ case TIFF_BYTE:
+ case TIFF_SBYTE:
+ if (fip->field_passcount) {
+ char* cp;
+ if (wc == (uint16) TIFF_VARIABLE2) {
+ TIFFGetField(tif, fip->field_tag, &wc2, &cp);
+ dir->tdir_count = wc2;
+ } else { /* Assume TIFF_VARIABLE */
+ TIFFGetField(tif, fip->field_tag, &wc, &cp);
+ dir->tdir_count = wc;
+ }
+ if (!TIFFWriteByteArray(tif, dir, cp))
+ return 0;
+ } else {
+ if (wc == 1) {
+ char cv;
+ TIFFGetField(tif, fip->field_tag, &cv);
+ if (!TIFFWriteByteArray(tif, dir, &cv))
+ return 0;
+ } else {
+ char* cp;
+ TIFFGetField(tif, fip->field_tag, &cp);
+ if (!TIFFWriteByteArray(tif, dir, cp))
+ return 0;
+ }
+ }
+ break;
+
+ case TIFF_UNDEFINED:
+ { char* cp;
+ if (wc == (unsigned short) TIFF_VARIABLE) {
+ TIFFGetField(tif, fip->field_tag, &wc, &cp);
+ dir->tdir_count = wc;
+ } else if (wc == (unsigned short) TIFF_VARIABLE2) {
+ TIFFGetField(tif, fip->field_tag, &wc2, &cp);
+ dir->tdir_count = wc2;
+ } else
+ TIFFGetField(tif, fip->field_tag, &cp);
+ if (!TIFFWriteByteArray(tif, dir, cp))
+ return (0);
+ }
+ break;
+
+ case TIFF_NOTYPE:
+ break;
+ }
+ return (1);
+}
+
+/*
+ * Setup a directory entry with either a SHORT
+ * or LONG type according to the value.
+ */
+static void
+TIFFSetupShortLong(TIFF* tif, ttag_t tag, TIFFDirEntry* dir, uint32 v)
+{
+ dir->tdir_tag = (uint16) 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);
+ }
+}
+
+/*
+ * Setup a SHORT directory entry
+ */
+static void
+TIFFSetupShort(TIFF* tif, ttag_t tag, TIFFDirEntry* dir, uint16 v)
+{
+ dir->tdir_tag = (uint16) tag;
+ dir->tdir_count = 1;
+ dir->tdir_type = (short) TIFF_SHORT;
+ dir->tdir_offset = TIFFInsertData(tif, (int) TIFF_SHORT, v);
+}
+#undef MakeShortDirent
+
+#define NITEMS(x) (sizeof (x) / sizeof (x[0]))
+/*
+ * Setup a directory entry that references a
+ * samples/pixel array of SHORT values and
+ * (potentially) write the associated indirect
+ * values.
+ */
+static int
+TIFFWritePerSampleShorts(TIFF* tif, ttag_t tag, TIFFDirEntry* dir)
+{
+ uint16 buf[10], v;
+ uint16* w = buf;
+ uint16 i, samples = tif->tif_dir.td_samplesperpixel;
+ int status;
+
+ if (samples > NITEMS(buf)) {
+ w = (uint16*) _TIFFmalloc(samples * sizeof (uint16));
+ if (w == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "No space to write per-sample shorts");
+ return (0);
+ }
+ }
+ TIFFGetField(tif, tag, &v);
+ for (i = 0; i < samples; i++)
+ w[i] = v;
+
+ dir->tdir_tag = (uint16) tag;
+ dir->tdir_type = (uint16) TIFF_SHORT;
+ dir->tdir_count = samples;
+ status = TIFFWriteShortArray(tif, dir, w);
+ if (w != buf)
+ _TIFFfree((char*) w);
+ return (status);
+}
+
+/*
+ * Setup a directory entry that references a samples/pixel array of ``type''
+ * values and (potentially) write the associated indirect values. The source
+ * data from TIFFGetField() for the specified tag must be returned as double.
+ */
+static int
+TIFFWritePerSampleAnys(TIFF* tif,
+ TIFFDataType type, ttag_t tag, TIFFDirEntry* dir)
+{
+ double buf[10], v;
+ double* w = buf;
+ uint16 i, samples = tif->tif_dir.td_samplesperpixel;
+ int status;
+
+ if (samples > NITEMS(buf)) {
+ w = (double*) _TIFFmalloc(samples * sizeof (double));
+ if (w == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "No space to write per-sample values");
+ return (0);
+ }
+ }
+ TIFFGetField(tif, tag, &v);
+ for (i = 0; i < samples; i++)
+ w[i] = v;
+ status = TIFFWriteAnyArray(tif, type, tag, dir, samples, w);
+ if (w != buf)
+ _TIFFfree(w);
+ return (status);
+}
+#undef NITEMS
+
+/*
+ * Setup a pair of bytes that are returned by
+ * value, rather than as a reference to an array.
+ */
+static int
+TIFFSetupBytePair(TIFF* tif, ttag_t tag, TIFFDirEntry* dir)
+{
+ char v[2];
+
+ TIFFGetField(tif, tag, &v[0], &v[1]);
+
+ dir->tdir_tag = (uint16) tag;
+ dir->tdir_type = (uint16) TIFF_BYTE;
+ dir->tdir_count = 2;
+ return (TIFFWriteByteArray(tif, dir, v));
+}
+
+/*
+ * Setup a pair of shorts that are returned by
+ * value, rather than as a reference to an array.
+ */
+static int
+TIFFSetupShortPair(TIFF* tif, ttag_t tag, TIFFDirEntry* dir)
+{
+ uint16 v[2];
+
+ TIFFGetField(tif, tag, &v[0], &v[1]);
+
+ dir->tdir_tag = (uint16) tag;
+ dir->tdir_type = (uint16) TIFF_SHORT;
+ dir->tdir_count = 2;
+ return (TIFFWriteShortArray(tif, dir, v));
+}
+
+/*
+ * Setup a directory entry for an NxM table of shorts,
+ * where M is known to be 2**bitspersample, and write
+ * the associated indirect data.
+ */
+static int
+TIFFWriteShortTable(TIFF* tif,
+ ttag_t tag, TIFFDirEntry* dir, uint32 n, uint16** table)
+{
+ uint32 i, off;
+
+ dir->tdir_tag = (uint16) tag;
+ dir->tdir_type = (short) TIFF_SHORT;
+ /* XXX -- yech, fool TIFFWriteData */
+ dir->tdir_count = (uint32) (1L<<tif->tif_dir.td_bitspersample);
+ off = tif->tif_dataoff;
+ for (i = 0; i < n; i++)
+ if (!TIFFWriteData(tif, dir, (char *)table[i]))
+ return (0);
+ dir->tdir_count *= n;
+ dir->tdir_offset = off;
+ return (1);
+}
+
+/*
+ * Write/copy data associated with an ASCII or opaque tag value.
+ */
+static int
+TIFFWriteByteArray(TIFF* tif, TIFFDirEntry* dir, char* cp)
+{
+ if (dir->tdir_count <= 4) {
+ if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
+ dir->tdir_offset = (uint32)cp[0] << 24;
+ if (dir->tdir_count >= 2)
+ dir->tdir_offset |= (uint32)cp[1] << 16;
+ if (dir->tdir_count >= 3)
+ dir->tdir_offset |= (uint32)cp[2] << 8;
+ if (dir->tdir_count == 4)
+ dir->tdir_offset |= cp[3];
+ } else {
+ dir->tdir_offset = cp[0];
+ if (dir->tdir_count >= 2)
+ dir->tdir_offset |= (uint32) cp[1] << 8;
+ if (dir->tdir_count >= 3)
+ dir->tdir_offset |= (uint32) cp[2] << 16;
+ if (dir->tdir_count == 4)
+ dir->tdir_offset |= (uint32) cp[3] << 24;
+ }
+ return 1;
+ } else
+ return TIFFWriteData(tif, dir, cp);
+}
+
+/*
+ * Setup a directory entry of an array of SHORT
+ * or SSHORT and write the associated indirect values.
+ */
+static int
+TIFFWriteShortArray(TIFF* tif, TIFFDirEntry* dir, uint16* v)
+{
+ if (dir->tdir_count <= 2) {
+ if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
+ dir->tdir_offset = (uint32) v[0] << 16;
+ if (dir->tdir_count == 2)
+ dir->tdir_offset |= v[1] & 0xffff;
+ } else {
+ dir->tdir_offset = v[0] & 0xffff;
+ if (dir->tdir_count == 2)
+ dir->tdir_offset |= (uint32) v[1] << 16;
+ }
+ return (1);
+ } else
+ return (TIFFWriteData(tif, dir, (char*) v));
+}
+
+/*
+ * Setup a directory entry of an array of LONG
+ * or SLONG and write the associated indirect values.
+ */
+static int
+TIFFWriteLongArray(TIFF* tif, TIFFDirEntry* dir, uint32* v)
+{
+ if (dir->tdir_count == 1) {
+ dir->tdir_offset = v[0];
+ return (1);
+ } else
+ return (TIFFWriteData(tif, dir, (char*) v));
+}
+
+/*
+ * Setup a directory entry of an array of RATIONAL
+ * or SRATIONAL and write the associated indirect values.
+ */
+static int
+TIFFWriteRationalArray(TIFF* tif, TIFFDirEntry* dir, float* v)
+{
+ uint32 i;
+ uint32* t;
+ int status;
+
+ t = (uint32*) _TIFFmalloc(2 * dir->tdir_count * sizeof (uint32));
+ if (t == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "No space to write RATIONAL array");
+ return (0);
+ }
+ for (i = 0; i < dir->tdir_count; i++) {
+ float fv = v[i];
+ int sign = 1;
+ uint32 den;
+
+ if (fv < 0) {
+ if (dir->tdir_type == TIFF_RATIONAL) {
+ TIFFWarningExt(tif->tif_clientdata,
+ tif->tif_name,
+ "\"%s\": Information lost writing value (%g) as (unsigned) RATIONAL",
+ _TIFFFieldWithTag(tif,dir->tdir_tag)->field_name,
+ fv);
+ fv = 0;
+ } else
+ fv = -fv, sign = -1;
+ }
+ den = 1L;
+ if (fv > 0) {
+ while (fv < 1L<<(31-3) && den < 1L<<(31-3))
+ fv *= 1<<3, den *= 1L<<3;
+ }
+ t[2*i+0] = (uint32) (sign * (int32)(fv + 0.5));
+ t[2*i+1] = den;
+ }
+ status = TIFFWriteData(tif, dir, (char *)t);
+ _TIFFfree((char*) t);
+ return (status);
+}
+
+static int
+TIFFWriteFloatArray(TIFF* tif, TIFFDirEntry* dir, float* v)
+{
+ TIFFCvtNativeToIEEEFloat(tif, dir->tdir_count, v);
+ if (dir->tdir_count == 1) {
+ dir->tdir_offset = *(uint32*) &v[0];
+ return (1);
+ } else
+ return (TIFFWriteData(tif, dir, (char*) v));
+}
+
+static int
+TIFFWriteDoubleArray(TIFF* tif, TIFFDirEntry* dir, double* v)
+{
+ TIFFCvtNativeToIEEEDouble(tif, dir->tdir_count, v);
+ return (TIFFWriteData(tif, dir, (char*) v));
+}
+
+/*
+ * Write an array of ``type'' values for a specified tag (i.e. this is a tag
+ * which is allowed to have different types, e.g. SMaxSampleType).
+ * Internally the data values are represented as double since a double can
+ * hold any of the TIFF tag types (yes, this should really be an abstract
+ * type tany_t for portability). The data is converted into the specified
+ * type in a temporary buffer and then handed off to the appropriate array
+ * writer.
+ */
+static int
+TIFFWriteAnyArray(TIFF* tif,
+ TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, double* v)
+{
+ char buf[10 * sizeof(double)];
+ char* w = buf;
+ int i, status = 0;
+
+ if (n * TIFFDataWidth(type) > sizeof buf) {
+ w = (char*) _TIFFmalloc(n * TIFFDataWidth(type));
+ if (w == NULL) {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "No space to write array");
+ return (0);
+ }
+ }
+
+ dir->tdir_tag = (uint16) tag;
+ dir->tdir_type = (uint16) type;
+ dir->tdir_count = n;
+
+ switch (type) {
+ case TIFF_BYTE:
+ {
+ uint8* bp = (uint8*) w;
+ for (i = 0; i < (int) n; i++)
+ bp[i] = (uint8) v[i];
+ if (!TIFFWriteByteArray(tif, dir, (char*) bp))
+ goto out;
+ }
+ break;
+ case TIFF_SBYTE:
+ {
+ int8* bp = (int8*) w;
+ for (i = 0; i < (int) n; i++)
+ bp[i] = (int8) v[i];
+ if (!TIFFWriteByteArray(tif, dir, (char*) bp))
+ goto out;
+ }
+ break;
+ case TIFF_SHORT:
+ {
+ uint16* bp = (uint16*) w;
+ for (i = 0; i < (int) n; i++)
+ bp[i] = (uint16) v[i];
+ if (!TIFFWriteShortArray(tif, dir, (uint16*)bp))
+ goto out;
+ }
+ break;
+ case TIFF_SSHORT:
+ {
+ int16* bp = (int16*) w;
+ for (i = 0; i < (int) n; i++)
+ bp[i] = (int16) v[i];
+ if (!TIFFWriteShortArray(tif, dir, (uint16*)bp))
+ goto out;
+ }
+ break;
+ case TIFF_LONG:
+ {
+ uint32* bp = (uint32*) w;
+ for (i = 0; i < (int) n; i++)
+ bp[i] = (uint32) v[i];
+ if (!TIFFWriteLongArray(tif, dir, bp))
+ goto out;
+ }
+ break;
+ case TIFF_SLONG:
+ {
+ int32* bp = (int32*) w;
+ for (i = 0; i < (int) n; i++)
+ bp[i] = (int32) v[i];
+ if (!TIFFWriteLongArray(tif, dir, (uint32*) bp))
+ goto out;
+ }
+ break;
+ case TIFF_FLOAT:
+ {
+ float* bp = (float*) w;
+ for (i = 0; i < (int) n; i++)
+ bp[i] = (float) v[i];
+ if (!TIFFWriteFloatArray(tif, dir, bp))
+ goto out;
+ }
+ break;
+ case TIFF_DOUBLE:
+ {
+ if ( !TIFFWriteDoubleArray(tif, dir, v))
+ goto out;
+ }
+ break;
+ default:
+ /* TIFF_NOTYPE */
+ /* TIFF_ASCII */
+ /* TIFF_UNDEFINED */
+ /* TIFF_RATIONAL */
+ /* TIFF_SRATIONAL */
+ goto out;
+ }
+ status = 1;
+ out:
+ if (w != buf)
+ _TIFFfree(w);
+ return (status);
+}
+
+static int
+TIFFWriteTransferFunction(TIFF* tif, TIFFDirEntry* dir)
+{
+ TIFFDirectory* td = &tif->tif_dir;
+ tsize_t n = (1L<<td->td_bitspersample) * sizeof (uint16);
+ uint16** tf = td->td_transferfunction;
+ int ncols;
+
+ /*
+ * Check if the table can be written as a single column,
+ * or if it must be written as 3 columns. Note that we
+ * write a 3-column tag if there are 2 samples/pixel and
+ * a single column of data won't suffice--hmm.
+ */
+ switch (td->td_samplesperpixel - td->td_extrasamples) {
+ default: if (_TIFFmemcmp(tf[0], tf[2], n)) { ncols = 3; break; }
+ case 2: if (_TIFFmemcmp(tf[0], tf[1], n)) { ncols = 3; break; }
+ case 1: case 0: ncols = 1;
+ }
+ return (TIFFWriteShortTable(tif,
+ TIFFTAG_TRANSFERFUNCTION, dir, ncols, tf));
+}
+
+static int
+TIFFWriteInkNames(TIFF* tif, TIFFDirEntry* dir)
+{
+ TIFFDirectory* td = &tif->tif_dir;
+
+ dir->tdir_tag = TIFFTAG_INKNAMES;
+ dir->tdir_type = (short) TIFF_ASCII;
+ dir->tdir_count = td->td_inknameslen;
+ return (TIFFWriteByteArray(tif, dir, td->td_inknames));
+}
+
+/*
+ * Write a contiguous directory item.
+ */
+static int
+TIFFWriteData(TIFF* tif, TIFFDirEntry* dir, char* cp)
+{
+ tsize_t cc;
+
+ if (tif->tif_flags & TIFF_SWAB) {
+ switch (dir->tdir_type) {
+ case TIFF_SHORT:
+ case TIFF_SSHORT:
+ TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count);
+ break;
+ case TIFF_LONG:
+ case TIFF_SLONG:
+ case TIFF_FLOAT:
+ TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count);
+ break;
+ case TIFF_RATIONAL:
+ case TIFF_SRATIONAL:
+ TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count);
+ break;
+ case TIFF_DOUBLE:
+ TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count);
+ break;
+ }
+ }
+ dir->tdir_offset = tif->tif_dataoff;
+ cc = dir->tdir_count * TIFFDataWidth((TIFFDataType) dir->tdir_type);
+ if (SeekOK(tif, dir->tdir_offset) &&
+ WriteOK(tif, cp, cc)) {
+ tif->tif_dataoff += (cc + 1) & ~1;
+ return (1);
+ }
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error writing data for field \"%s\"",
+ _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
+ return (0);
+}
+
+/*
+ * Similar to TIFFWriteDirectory(), but if the directory has already
+ * been written once, it is relocated to the end of the file, in case it
+ * has changed in size. Note that this will result in the loss of the
+ * previously used directory space.
+ */
+
+int
+TIFFRewriteDirectory( TIFF *tif )
+{
+ static const char module[] = "TIFFRewriteDirectory";
+
+ /* We don't need to do anything special if it hasn't been written. */
+ if ( tif->tif_diroff == 0 )
+ return TIFFWriteDirectory( tif );
+
+ /*
+ ** Find and zero the pointer to this directory, so that TIFFLinkDirectory
+ ** will cause it to be added after this directories current pre-link.
+ */
+
+ /* Is it the first directory in the file? */
+ if (tif->tif_header.tiff_diroff == tif->tif_diroff)
+ {
+ tif->tif_header.tiff_diroff = 0;
+ tif->tif_diroff = 0;
+
+ TIFFSeekFile(tif, (toff_t)(TIFF_MAGIC_SIZE+TIFF_VERSION_SIZE),
+ SEEK_SET);
+ if (!WriteOK(tif, &(tif->tif_header.tiff_diroff),
+ sizeof (tif->tif_diroff)))
+ {
+ TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ "Error updating TIFF header");
+ return (0);
+ }
+ }
+ else
+ {
+ toff_t nextdir, off;
+
+ nextdir = tif->tif_header.tiff_diroff;
+ do {
+ uint16 dircount;
+
+ if (!SeekOK(tif, nextdir) ||
+ !ReadOK(tif, &dircount, sizeof (dircount))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory count");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&dircount);
+ (void) TIFFSeekFile(tif,
+ dircount * sizeof (TIFFDirEntry), SEEK_CUR);
+ if (!ReadOK(tif, &nextdir, sizeof (nextdir))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory link");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&nextdir);
+ } while (nextdir != tif->tif_diroff && nextdir != 0);
+ off = TIFFSeekFile(tif, 0, SEEK_CUR); /* get current offset */
+ (void) TIFFSeekFile(tif, off - (toff_t)sizeof(nextdir), SEEK_SET);
+ tif->tif_diroff = 0;
+ if (!WriteOK(tif, &(tif->tif_diroff), sizeof (nextdir))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing directory link");
+ return (0);
+ }
+ }
+
+ /*
+ ** Now use TIFFWriteDirectory() normally.
+ */
+
+ return TIFFWriteDirectory( tif );
+}
+
+
+/*
+ * Link the current directory into the directory chain for the file.
+ */
+static int
+TIFFLinkDirectory(TIFF* tif)
+{
+ static const char module[] = "TIFFLinkDirectory";
+ toff_t nextdir;
+ toff_t diroff, off;
+
+ tif->tif_diroff = (TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1;
+ diroff = tif->tif_diroff;
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&diroff);
+
+ /*
+ * Handle SubIFDs
+ */
+ if (tif->tif_flags & TIFF_INSUBIFD) {
+ (void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
+ if (!WriteOK(tif, &diroff, sizeof (diroff))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%s: Error writing SubIFD directory link",
+ tif->tif_name);
+ return (0);
+ }
+ /*
+ * Advance to the next SubIFD or, if this is
+ * the last one configured, revert back to the
+ * normal directory linkage.
+ */
+ if (--tif->tif_nsubifd)
+ tif->tif_subifdoff += sizeof (diroff);
+ else
+ tif->tif_flags &= ~TIFF_INSUBIFD;
+ return (1);
+ }
+
+ if (tif->tif_header.tiff_diroff == 0) {
+ /*
+ * First directory, overwrite offset in header.
+ */
+ tif->tif_header.tiff_diroff = tif->tif_diroff;
+ (void) TIFFSeekFile(tif,
+ (toff_t)(TIFF_MAGIC_SIZE+TIFF_VERSION_SIZE),
+ SEEK_SET);
+ if (!WriteOK(tif, &diroff, sizeof (diroff))) {
+ TIFFErrorExt(tif->tif_clientdata, 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 {
+ uint16 dircount;
+
+ if (!SeekOK(tif, nextdir) ||
+ !ReadOK(tif, &dircount, sizeof (dircount))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory count");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabShort(&dircount);
+ (void) TIFFSeekFile(tif,
+ dircount * sizeof (TIFFDirEntry), SEEK_CUR);
+ if (!ReadOK(tif, &nextdir, sizeof (nextdir))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error fetching directory link");
+ return (0);
+ }
+ if (tif->tif_flags & TIFF_SWAB)
+ TIFFSwabLong(&nextdir);
+ } while (nextdir != 0);
+ off = TIFFSeekFile(tif, 0, SEEK_CUR); /* get current offset */
+ (void) TIFFSeekFile(tif, off - (toff_t)sizeof(nextdir), SEEK_SET);
+ if (!WriteOK(tif, &diroff, sizeof (diroff))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Error writing directory link");
+ return (0);
+ }
+ return (1);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
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