1415 lines
38 KiB
C
1415 lines
38 KiB
C
/* $Id: tif_dirwrite.c,v 1.37.2.7 2010-06-08 18:50:42 bfriesen Exp $ */
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/*
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* Copyright (c) 1988-1997 Sam Leffler
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* Copyright (c) 1991-1997 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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/*
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* TIFF Library.
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*
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* Directory Write Support Routines.
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*/
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#include "tiffiop.h"
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#ifdef HAVE_IEEEFP
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# define TIFFCvtNativeToIEEEFloat(tif, n, fp)
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# define TIFFCvtNativeToIEEEDouble(tif, n, dp)
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#else
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extern void TIFFCvtNativeToIEEEFloat(TIFF*, uint32, float*);
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extern void TIFFCvtNativeToIEEEDouble(TIFF*, uint32, double*);
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#endif
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static int TIFFWriteNormalTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*);
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static void TIFFSetupShortLong(TIFF*, ttag_t, TIFFDirEntry*, uint32);
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static void TIFFSetupShort(TIFF*, ttag_t, TIFFDirEntry*, uint16);
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static int TIFFSetupShortPair(TIFF*, ttag_t, TIFFDirEntry*);
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static int TIFFWritePerSampleShorts(TIFF*, ttag_t, TIFFDirEntry*);
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static int TIFFWritePerSampleAnys(TIFF*, TIFFDataType, ttag_t, TIFFDirEntry*);
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static int TIFFWriteShortTable(TIFF*, ttag_t, TIFFDirEntry*, uint32, uint16**);
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static int TIFFWriteShortArray(TIFF*, TIFFDirEntry*, uint16*);
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static int TIFFWriteLongArray(TIFF *, TIFFDirEntry*, uint32*);
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static int TIFFWriteRationalArray(TIFF *, TIFFDirEntry*, float*);
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static int TIFFWriteFloatArray(TIFF *, TIFFDirEntry*, float*);
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static int TIFFWriteDoubleArray(TIFF *, TIFFDirEntry*, double*);
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static int TIFFWriteByteArray(TIFF*, TIFFDirEntry*, char*);
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static int TIFFWriteAnyArray(TIFF*,
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TIFFDataType, ttag_t, TIFFDirEntry*, uint32, double*);
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static int TIFFWriteTransferFunction(TIFF*, TIFFDirEntry*);
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static int TIFFWriteInkNames(TIFF*, TIFFDirEntry*);
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static int TIFFWriteData(TIFF*, TIFFDirEntry*, char*);
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static int TIFFLinkDirectory(TIFF*);
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#define WriteRationalPair(type, tag1, v1, tag2, v2) { \
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TIFFWriteRational((tif), (type), (tag1), (dir), (v1)) \
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TIFFWriteRational((tif), (type), (tag2), (dir)+1, (v2)) \
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(dir)++; \
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}
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#define TIFFWriteRational(tif, type, tag, dir, v) \
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(dir)->tdir_tag = (tag); \
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(dir)->tdir_type = (type); \
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(dir)->tdir_count = 1; \
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if (!TIFFWriteRationalArray((tif), (dir), &(v))) \
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goto bad;
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/*
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* Write the contents of the current directory
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* to the specified file. This routine doesn't
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* handle overwriting a directory with auxiliary
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* storage that's been changed.
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*/
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static int
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_TIFFWriteDirectory(TIFF* tif, int done)
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{
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uint16 dircount;
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toff_t diroff;
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ttag_t tag;
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uint32 nfields;
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tsize_t dirsize;
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char* data;
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TIFFDirEntry* dir;
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TIFFDirectory* td;
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unsigned long b, fields[FIELD_SETLONGS];
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int fi, nfi;
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if (tif->tif_mode == O_RDONLY)
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return (1);
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/*
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* Clear write state so that subsequent images with
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* different characteristics get the right buffers
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* setup for them.
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*/
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if (done)
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{
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if (tif->tif_flags & TIFF_POSTENCODE) {
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tif->tif_flags &= ~TIFF_POSTENCODE;
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if (!(*tif->tif_postencode)(tif)) {
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TIFFErrorExt(tif->tif_clientdata,
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tif->tif_name,
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"Error post-encoding before directory write");
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return (0);
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}
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}
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(*tif->tif_close)(tif); /* shutdown encoder */
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/*
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* Flush any data that might have been written
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* by the compression close+cleanup routines.
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*/
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if (tif->tif_rawcc > 0
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&& (tif->tif_flags & TIFF_BEENWRITING) != 0
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&& !TIFFFlushData1(tif)) {
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TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
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"Error flushing data before directory write");
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return (0);
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}
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if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
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_TIFFfree(tif->tif_rawdata);
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tif->tif_rawdata = NULL;
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tif->tif_rawcc = 0;
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tif->tif_rawdatasize = 0;
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}
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tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP);
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}
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td = &tif->tif_dir;
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/*
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* Size the directory so that we can calculate
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* offsets for the data items that aren't kept
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* in-place in each field.
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*/
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nfields = 0;
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for (b = 0; b <= FIELD_LAST; b++)
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if (TIFFFieldSet(tif, b) && b != FIELD_CUSTOM)
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nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
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nfields += td->td_customValueCount;
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dirsize = nfields * sizeof (TIFFDirEntry);
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data = (char*) _TIFFmalloc(dirsize);
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if (data == NULL) {
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TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
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"Cannot write directory, out of space");
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return (0);
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}
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/*
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* Directory hasn't been placed yet, put
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* it at the end of the file and link it
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* into the existing directory structure.
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*/
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if (tif->tif_diroff == 0 && !TIFFLinkDirectory(tif))
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goto bad;
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tif->tif_dataoff = (toff_t)(
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tif->tif_diroff + sizeof (uint16) + dirsize + sizeof (toff_t));
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if (tif->tif_dataoff & 1)
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tif->tif_dataoff++;
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(void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
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tif->tif_curdir++;
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dir = (TIFFDirEntry*) data;
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/*
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* Setup external form of directory
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* entries and write data items.
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*/
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_TIFFmemcpy(fields, td->td_fieldsset, sizeof (fields));
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/*
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* Write out ExtraSamples tag only if
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* extra samples are present in the data.
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*/
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if (FieldSet(fields, FIELD_EXTRASAMPLES) && !td->td_extrasamples) {
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ResetFieldBit(fields, FIELD_EXTRASAMPLES);
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nfields--;
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dirsize -= sizeof (TIFFDirEntry);
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} /*XXX*/
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for (fi = 0, nfi = tif->tif_nfields; nfi > 0; nfi--, fi++) {
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const TIFFFieldInfo* fip = tif->tif_fieldinfo[fi];
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/*
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* For custom fields, we test to see if the custom field
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* is set or not. For normal fields, we just use the
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* FieldSet test.
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*/
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if( fip->field_bit == FIELD_CUSTOM )
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{
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int ci, is_set = FALSE;
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for( ci = 0; ci < td->td_customValueCount; ci++ )
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is_set |= (td->td_customValues[ci].info == fip);
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if( !is_set )
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continue;
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}
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else if (!FieldSet(fields, fip->field_bit))
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continue;
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/*
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* Handle other fields.
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*/
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switch (fip->field_bit)
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{
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case FIELD_STRIPOFFSETS:
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/*
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* We use one field bit for both strip and tile
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* offsets, and so must be careful in selecting
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* the appropriate field descriptor (so that tags
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* are written in sorted order).
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*/
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tag = isTiled(tif) ?
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TIFFTAG_TILEOFFSETS : TIFFTAG_STRIPOFFSETS;
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if (tag != fip->field_tag)
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continue;
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dir->tdir_tag = (uint16) tag;
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dir->tdir_type = (uint16) TIFF_LONG;
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dir->tdir_count = (uint32) td->td_nstrips;
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if (!TIFFWriteLongArray(tif, dir, td->td_stripoffset))
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goto bad;
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break;
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case FIELD_STRIPBYTECOUNTS:
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/*
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* We use one field bit for both strip and tile
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* byte counts, and so must be careful in selecting
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* the appropriate field descriptor (so that tags
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* are written in sorted order).
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*/
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tag = isTiled(tif) ?
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TIFFTAG_TILEBYTECOUNTS : TIFFTAG_STRIPBYTECOUNTS;
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if (tag != fip->field_tag)
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continue;
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dir->tdir_tag = (uint16) tag;
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dir->tdir_type = (uint16) TIFF_LONG;
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dir->tdir_count = (uint32) td->td_nstrips;
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if (!TIFFWriteLongArray(tif, dir, td->td_stripbytecount))
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goto bad;
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break;
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case FIELD_ROWSPERSTRIP:
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TIFFSetupShortLong(tif, TIFFTAG_ROWSPERSTRIP,
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dir, td->td_rowsperstrip);
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break;
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case FIELD_COLORMAP:
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if (!TIFFWriteShortTable(tif, TIFFTAG_COLORMAP, dir,
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3, td->td_colormap))
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goto bad;
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break;
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case FIELD_IMAGEDIMENSIONS:
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TIFFSetupShortLong(tif, TIFFTAG_IMAGEWIDTH,
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dir++, td->td_imagewidth);
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TIFFSetupShortLong(tif, TIFFTAG_IMAGELENGTH,
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dir, td->td_imagelength);
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break;
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case FIELD_TILEDIMENSIONS:
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TIFFSetupShortLong(tif, TIFFTAG_TILEWIDTH,
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dir++, td->td_tilewidth);
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TIFFSetupShortLong(tif, TIFFTAG_TILELENGTH,
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dir, td->td_tilelength);
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break;
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case FIELD_COMPRESSION:
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TIFFSetupShort(tif, TIFFTAG_COMPRESSION,
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dir, td->td_compression);
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break;
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case FIELD_PHOTOMETRIC:
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TIFFSetupShort(tif, TIFFTAG_PHOTOMETRIC,
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dir, td->td_photometric);
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break;
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case FIELD_POSITION:
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WriteRationalPair(TIFF_RATIONAL,
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TIFFTAG_XPOSITION, td->td_xposition,
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TIFFTAG_YPOSITION, td->td_yposition);
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break;
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case FIELD_RESOLUTION:
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WriteRationalPair(TIFF_RATIONAL,
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TIFFTAG_XRESOLUTION, td->td_xresolution,
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TIFFTAG_YRESOLUTION, td->td_yresolution);
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break;
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case FIELD_BITSPERSAMPLE:
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case FIELD_MINSAMPLEVALUE:
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case FIELD_MAXSAMPLEVALUE:
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case FIELD_SAMPLEFORMAT:
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if (!TIFFWritePerSampleShorts(tif, fip->field_tag, dir))
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goto bad;
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break;
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case FIELD_SMINSAMPLEVALUE:
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case FIELD_SMAXSAMPLEVALUE:
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if (!TIFFWritePerSampleAnys(tif,
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_TIFFSampleToTagType(tif), fip->field_tag, dir))
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goto bad;
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break;
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case FIELD_PAGENUMBER:
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case FIELD_HALFTONEHINTS:
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case FIELD_YCBCRSUBSAMPLING:
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if (!TIFFSetupShortPair(tif, fip->field_tag, dir))
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goto bad;
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break;
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case FIELD_INKNAMES:
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if (!TIFFWriteInkNames(tif, dir))
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goto bad;
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break;
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case FIELD_TRANSFERFUNCTION:
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if (!TIFFWriteTransferFunction(tif, dir))
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goto bad;
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break;
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case FIELD_SUBIFD:
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/*
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* XXX: Always write this field using LONG type
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* for backward compatibility.
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*/
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dir->tdir_tag = (uint16) fip->field_tag;
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dir->tdir_type = (uint16) TIFF_LONG;
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dir->tdir_count = (uint32) td->td_nsubifd;
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if (!TIFFWriteLongArray(tif, dir, td->td_subifd))
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goto bad;
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/*
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* Total hack: if this directory includes a SubIFD
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* tag then force the next <n> directories to be
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* written as ``sub directories'' of this one. This
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* is used to write things like thumbnails and
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* image masks that one wants to keep out of the
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* normal directory linkage access mechanism.
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*/
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if (dir->tdir_count > 0) {
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tif->tif_flags |= TIFF_INSUBIFD;
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tif->tif_nsubifd = (uint16) dir->tdir_count;
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if (dir->tdir_count > 1)
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tif->tif_subifdoff = dir->tdir_offset;
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else
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tif->tif_subifdoff = (uint32)(
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tif->tif_diroff
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+ sizeof (uint16)
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+ ((char*)&dir->tdir_offset-data));
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}
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break;
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default:
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/* XXX: Should be fixed and removed. */
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if (fip->field_tag == TIFFTAG_DOTRANGE) {
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if (!TIFFSetupShortPair(tif, fip->field_tag, dir))
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goto bad;
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}
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else if (!TIFFWriteNormalTag(tif, dir, fip))
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goto bad;
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break;
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}
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dir++;
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if( fip->field_bit != FIELD_CUSTOM )
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ResetFieldBit(fields, fip->field_bit);
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}
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/*
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* Write directory.
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*/
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dircount = (uint16) nfields;
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diroff = (uint32) tif->tif_nextdiroff;
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if (tif->tif_flags & TIFF_SWAB) {
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/*
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* The file's byte order is opposite to the
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* native machine architecture. We overwrite
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* the directory information with impunity
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* because it'll be released below after we
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* write it to the file. Note that all the
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* other tag construction routines assume that
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* we do this byte-swapping; i.e. they only
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* byte-swap indirect data.
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*/
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for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) {
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TIFFSwabArrayOfShort(&dir->tdir_tag, 2);
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TIFFSwabArrayOfLong(&dir->tdir_count, 2);
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}
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dircount = (uint16) nfields;
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TIFFSwabShort(&dircount);
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TIFFSwabLong(&diroff);
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}
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(void) TIFFSeekFile(tif, tif->tif_diroff, SEEK_SET);
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if (!WriteOK(tif, &dircount, sizeof (dircount))) {
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TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
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"Error writing directory count");
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goto bad;
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}
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if (!WriteOK(tif, data, dirsize)) {
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TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
|
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"Error writing directory contents");
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goto bad;
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}
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if (!WriteOK(tif, &diroff, sizeof (uint32))) {
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TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
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"Error writing directory link");
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goto bad;
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}
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if (done) {
|
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TIFFFreeDirectory(tif);
|
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tif->tif_flags &= ~TIFF_DIRTYDIRECT;
|
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(*tif->tif_cleanup)(tif);
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|
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/*
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* Reset directory-related state for subsequent
|
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* directories.
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*/
|
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TIFFCreateDirectory(tif);
|
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}
|
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_TIFFfree(data);
|
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return (1);
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bad:
|
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_TIFFfree(data);
|
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return (0);
|
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}
|
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#undef WriteRationalPair
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|
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int
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TIFFWriteDirectory(TIFF* tif)
|
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{
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return _TIFFWriteDirectory(tif, TRUE);
|
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}
|
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|
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/*
|
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* Similar to TIFFWriteDirectory(), writes the directory out
|
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* but leaves all data structures in memory so that it can be
|
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* written again. This will make a partially written TIFF file
|
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* readable before it is successfully completed/closed.
|
|
*/
|
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int
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TIFFCheckpointDirectory(TIFF* tif)
|
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{
|
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int rc;
|
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/* Setup the strips arrays, if they haven't already been. */
|
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if (tif->tif_dir.td_stripoffset == NULL)
|
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(void) TIFFSetupStrips(tif);
|
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rc = _TIFFWriteDirectory(tif, FALSE);
|
|
(void) TIFFSetWriteOffset(tif, TIFFSeekFile(tif, 0, SEEK_END));
|
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return rc;
|
|
}
|
|
|
|
static int
|
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_TIFFWriteCustomDirectory(TIFF* tif, toff_t *pdiroff)
|
|
{
|
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uint16 dircount;
|
|
uint32 nfields;
|
|
tsize_t dirsize;
|
|
char* data;
|
|
TIFFDirEntry* dir;
|
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TIFFDirectory* td;
|
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unsigned long b, fields[FIELD_SETLONGS];
|
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int fi, nfi;
|
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|
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if (tif->tif_mode == O_RDONLY)
|
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return (1);
|
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|
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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++)
|
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if (TIFFFieldSet(tif, b) && b != FIELD_CUSTOM)
|
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nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
|
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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 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 * (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:
|
|
*/
|