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authorJörg Frings-Fürst <debian@jff-webhosting.net>2015-08-23 12:17:05 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2015-08-23 12:17:05 +0200
commitc0b89ac5bfb90835ef01573267020e42d4fe070c (patch)
tree733c16852d964d84b7565af4bdaff0bcca901b88 /tiff/contrib/pds/tif_pdsdirread.c
parent094535c010320967639e8e86f974d878e80baa72 (diff)
Imported Upstream version 1.8.0upstream/1.8.0
Diffstat (limited to 'tiff/contrib/pds/tif_pdsdirread.c')
-rw-r--r--tiff/contrib/pds/tif_pdsdirread.c1131
1 files changed, 0 insertions, 1131 deletions
diff --git a/tiff/contrib/pds/tif_pdsdirread.c b/tiff/contrib/pds/tif_pdsdirread.c
deleted file mode 100644
index 3d01311..0000000
--- a/tiff/contrib/pds/tif_pdsdirread.c
+++ /dev/null
@@ -1,1131 +0,0 @@
-/* $Header: /cvs/maptools/cvsroot/libtiff/contrib/pds/tif_pdsdirread.c,v 1.3.2.1 2010-06-08 18:50:41 bfriesen Exp $ */
-
-/*
- * Copyright (c) 1988-1996 Sam Leffler
- * Copyright (c) 1991-1996 Silicon Graphics, Inc.
- * Copyright (c( 1996 USAF Phillips Laboratory
- *
- * 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.
- *
- * These routines written by Conrad J. Poelman on a single late-night of
- * March 20-21, 1996.
- *
- * The entire purpose of this file is to provide a single external function,
- * TIFFReadPrivateDataSubDirectory(). This function is intended for use in reading a
- * private subdirectory from a TIFF file into a private structure. The
- * actual writing of data into the structure is handled by the setFieldFn(),
- * which is passed to TIFFReadPrivateDataSubDirectory() as a parameter. The idea is to
- * enable any application wishing to store private subdirectories to do so
- * easily using this function, without modifying the TIFF library.
- *
- * The astute observer will notice that only two functions are at all different
- * from the original tif_dirread.c file: TIFFReadPrivateDataSubDirectory() and
- * TIFFFetchNormalSubTag(). All the other stuff that makes this file so huge
- * is only necessary because all of those functions are declared static in
- * tif_dirread.c, so we have to totally duplicate them in order to use them.
- *
- * Oh, also note the bug fix in TIFFFetchFloat().
- *
- */
-
-#include "tiffiop.h"
-
-#define IGNORE 0 /* tag placeholder used below */
-
-#if HAVE_IEEEFP
-#define TIFFCvtIEEEFloatToNative(tif, n, fp)
-#define TIFFCvtIEEEDoubleToNative(tif, n, dp)
-#else
-extern void TIFFCvtIEEEFloatToNative(TIFF*, uint32, float*);
-extern void TIFFCvtIEEEDoubleToNative(TIFF*, uint32, double*);
-#endif
-
-static void EstimateStripByteCounts(TIFF*, TIFFDirEntry*, uint16);
-static void MissingRequired(TIFF*, const char*);
-static int CheckDirCount(TIFF*, TIFFDirEntry*, uint32);
-static tsize_t TIFFFetchData(TIFF*, TIFFDirEntry*, char*);
-static tsize_t TIFFFetchString(TIFF*, TIFFDirEntry*, char*);
-static float TIFFFetchRational(TIFF*, TIFFDirEntry*);
-static int TIFFFetchNormalSubTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*,
- int (*getFieldFn)(TIFF *tif,ttag_t tag,...));
-static int TIFFFetchPerSampleShorts(TIFF*, TIFFDirEntry*, int*);
-static int TIFFFetchPerSampleAnys(TIFF*, TIFFDirEntry*, double*);
-static int TIFFFetchShortArray(TIFF*, TIFFDirEntry*, uint16*);
-static int TIFFFetchStripThing(TIFF*, TIFFDirEntry*, long, uint32**);
-static int TIFFFetchExtraSamples(TIFF*, TIFFDirEntry*);
-static int TIFFFetchRefBlackWhite(TIFF*, TIFFDirEntry*);
-static float TIFFFetchFloat(TIFF*, TIFFDirEntry*);
-static int TIFFFetchFloatArray(TIFF*, TIFFDirEntry*, float*);
-static int TIFFFetchDoubleArray(TIFF*, TIFFDirEntry*, double*);
-static int TIFFFetchAnyArray(TIFF*, TIFFDirEntry*, double*);
-static int TIFFFetchShortPair(TIFF*, TIFFDirEntry*);
-#if STRIPCHOP_SUPPORT
-static void ChopUpSingleUncompressedStrip(TIFF*);
-#endif
-
-static char *
-CheckMalloc(TIFF* tif, tsize_t n, const char* what)
-{
- char *cp = (char*)_TIFFmalloc(n);
- if (cp == NULL)
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "No space %s", what);
- return (cp);
-}
-
-/* Just as was done with TIFFWritePrivateDataSubDirectory(), here we implement
- TIFFReadPrivateDataSubDirectory() which takes an offset into the TIFF file,
- a TIFFFieldInfo structure specifying the types of the various tags,
- and a function to use to set individual tags when they are encountered.
- The data is read from the file, translated using the TIFF library's
- built-in machine-independent conversion functions, and filled into
- private subdirectory structure.
-
- This code was written by copying the original TIFFReadDirectory() function
- from tif_dirread.c and paring it down to what is needed for this.
-
- It is the caller's responsibility to allocate and initialize the internal
- structure that setFieldFn() will be writing into. If this function is being
- called more than once before closing the file, the caller also must be
- careful to free data in the structure before re-initializing.
-
- It is also the caller's responsibility to verify the presence of
- any required fields after reading the directory in.
-*/
-
-
-int
-TIFFReadPrivateDataSubDirectory(TIFF* tif, toff_t pdir_offset,
- TIFFFieldInfo *field_info,
- int (*setFieldFn)(TIFF *tif, ttag_t tag, ...))
-{
- register TIFFDirEntry* dp;
- register int n;
- register TIFFDirectory* td;
- TIFFDirEntry* dir;
- int iv;
- long v;
- double dv;
- const TIFFFieldInfo* fip;
- int fix;
- uint16 dircount;
- uint32 nextdiroff;
- char* cp;
- int diroutoforderwarning = 0;
-
- /* Skipped part about checking for directories or compression data. */
-
- if (!isMapped(tif)) {
- if (!SeekOK(tif, pdir_offset)) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "Seek error accessing TIFF private subdirectory");
- return (0);
- }
- if (!ReadOK(tif, &dircount, sizeof (uint16))) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "Can not read TIFF private subdirectory count");
- return (0);
- }
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabShort(&dircount);
- dir = (TIFFDirEntry *)CheckMalloc(tif,
- dircount * sizeof (TIFFDirEntry), "to read TIFF private subdirectory");
- if (dir == NULL)
- return (0);
- if (!ReadOK(tif, dir, dircount*sizeof (TIFFDirEntry))) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Can not read TIFF private subdirectory");
- goto bad;
- }
- /*
- * Read offset to next directory for sequential scans.
- */
- (void) ReadOK(tif, &nextdiroff, sizeof (uint32));
- } else {
- toff_t off = pdir_offset;
-
- if (off + sizeof (short) > tif->tif_size) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "Can not read TIFF private subdirectory count");
- return (0);
- } else
- _TIFFmemcpy(&dircount, tif->tif_base + off, sizeof (uint16));
- off += sizeof (uint16);
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabShort(&dircount);
- dir = (TIFFDirEntry *)CheckMalloc(tif,
- dircount * sizeof (TIFFDirEntry), "to read TIFF private subdirectory");
- if (dir == NULL)
- return (0);
- if (off + dircount*sizeof (TIFFDirEntry) > tif->tif_size) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Can not read TIFF private subdirectory");
- goto bad;
- } else
- _TIFFmemcpy(dir, tif->tif_base + off,
- dircount*sizeof (TIFFDirEntry));
- off += dircount* sizeof (TIFFDirEntry);
- if (off + sizeof (uint32) < tif->tif_size)
- _TIFFmemcpy(&nextdiroff, tif->tif_base+off, sizeof (uint32));
- }
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabLong(&nextdiroff);
-
- /*
- * Setup default value and then make a pass over
- * the fields to check type and tag information,
- * and to extract info required to size data
- * structures. A second pass is made afterwards
- * to read in everthing not taken in the first pass.
- */
- td = &tif->tif_dir;
-
- for (fip = field_info, dp = dir, n = dircount;
- n > 0; n--, dp++) {
- if (tif->tif_flags & TIFF_SWAB) {
- TIFFSwabArrayOfShort(&dp->tdir_tag, 2);
- TIFFSwabArrayOfLong(&dp->tdir_count, 2);
- }
- /*
- * Find the field information entry for this tag.
- */
- /*
- * Silicon Beach (at least) writes unordered
- * directory tags (violating the spec). Handle
- * it here, but be obnoxious (maybe they'll fix it?).
- */
- if (dp->tdir_tag < fip->field_tag) {
- if (!diroutoforderwarning) {
- TIFFWarning(tif->tif_name,
- "invalid TIFF private subdirectory; tags are not sorted in ascending order");
- diroutoforderwarning = 1;
- }
- fip = field_info; /* O(n^2) */
- }
-
- while (fip->field_tag && fip->field_tag < dp->tdir_tag)
- fip++;
- if (!fip->field_tag || fip->field_tag != dp->tdir_tag) {
- TIFFWarning(tif->tif_name,
- "unknown field with tag %d (0x%x) in private subdirectory ignored",
- dp->tdir_tag, dp->tdir_tag);
- dp->tdir_tag = IGNORE;
- fip = field_info;/* restart search */
- continue;
- }
- /*
- * Null out old tags that we ignore.
- */
-
- /* Not implemented yet, since FIELD_IGNORE is specific to
- the main directories. Could pass this in too... */
- if (0 /* && fip->field_bit == FIELD_IGNORE */) {
- ignore:
- dp->tdir_tag = IGNORE;
- continue;
- }
-
- /*
- * Check data type.
- */
-
- while (dp->tdir_type != (u_short)fip->field_type) {
- if (fip->field_type == TIFF_ANY) /* wildcard */
- break;
- fip++;
- if (!fip->field_tag || fip->field_tag != dp->tdir_tag) {
- TIFFWarning(tif->tif_name,
- "wrong data type %d for \"%s\"; tag ignored",
- dp->tdir_type, fip[-1].field_name);
- goto ignore;
- }
- }
- /*
- * Check count if known in advance.
- */
- if (fip->field_readcount != TIFF_VARIABLE) {
- uint32 expected = (fip->field_readcount == TIFF_SPP) ?
- (uint32) td->td_samplesperpixel :
- (uint32) fip->field_readcount;
- if (!CheckDirCount(tif, dp, expected))
- goto ignore;
- }
-
- /* Now read in and process data from field. */
- if (!TIFFFetchNormalSubTag(tif, dp, fip, setFieldFn))
- goto bad;
-
- }
-
- if (dir)
- _TIFFfree(dir);
- return (1);
-bad:
- if (dir)
- _TIFFfree(dir);
- return (0);
-}
-
-static void
-EstimateStripByteCounts(TIFF* tif, TIFFDirEntry* dir, uint16 dircount)
-{
- register TIFFDirEntry *dp;
- register TIFFDirectory *td = &tif->tif_dir;
- uint16 i;
-
- if (td->td_stripbytecount)
- _TIFFfree(td->td_stripbytecount);
- td->td_stripbytecount = (uint32*)
- CheckMalloc(tif, td->td_nstrips * sizeof (uint32),
- "for \"StripByteCounts\" array");
- if (td->td_compression != COMPRESSION_NONE) {
- uint32 space = (uint32)(sizeof (TIFFHeader)
- + sizeof (uint16)
- + (dircount * sizeof (TIFFDirEntry))
- + sizeof (uint32));
- toff_t filesize = TIFFGetFileSize(tif);
- uint16 n;
-
- /* calculate amount of space used by indirect values */
- for (dp = dir, n = dircount; n > 0; n--, dp++) {
- uint32 cc = dp->tdir_count*TIFFDataWidth(dp->tdir_type);
- if (cc > sizeof (uint32))
- space += cc;
- }
- space = (filesize - space) / td->td_samplesperpixel;
- for (i = 0; i < td->td_nstrips; i++)
- td->td_stripbytecount[i] = space;
- /*
- * This gross hack handles the case were the offset to
- * the last strip is past the place where we think the strip
- * should begin. Since a strip of data must be contiguous,
- * it's safe to assume that we've overestimated the amount
- * of data in the strip and trim this number back accordingly.
- */
- i--;
- if (td->td_stripoffset[i] + td->td_stripbytecount[i] > filesize)
- td->td_stripbytecount[i] =
- filesize - td->td_stripoffset[i];
- } else {
- uint32 rowbytes = TIFFScanlineSize(tif);
- uint32 rowsperstrip = td->td_imagelength / td->td_nstrips;
- for (i = 0; i < td->td_nstrips; i++)
- td->td_stripbytecount[i] = rowbytes*rowsperstrip;
- }
- TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
- if (!TIFFFieldSet(tif, FIELD_ROWSPERSTRIP))
- td->td_rowsperstrip = td->td_imagelength;
-}
-
-static void
-MissingRequired(TIFF* tif, const char* tagname)
-{
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "TIFF directory is missing required \"%s\" field", tagname);
-}
-
-/*
- * Check the count field of a directory
- * entry against a known value. The caller
- * is expected to skip/ignore the tag if
- * there is a mismatch.
- */
-static int
-CheckDirCount(TIFF* tif, TIFFDirEntry* dir, uint32 count)
-{
- if (count != dir->tdir_count) {
- TIFFWarning(tif->tif_name,
- "incorrect count for field \"%s\" (%lu, expecting %lu); tag ignored",
- _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name,
- dir->tdir_count, count);
- return (0);
- }
- return (1);
-}
-
-/*
- * Fetch a contiguous directory item.
- */
-static tsize_t
-TIFFFetchData(TIFF* tif, TIFFDirEntry* dir, char* cp)
-{
- int w = TIFFDataWidth(dir->tdir_type);
- tsize_t cc = dir->tdir_count * w;
-
- if (!isMapped(tif)) {
- if (!SeekOK(tif, dir->tdir_offset))
- goto bad;
- if (!ReadOK(tif, cp, cc))
- goto bad;
- } else {
- if (dir->tdir_offset + cc > tif->tif_size)
- goto bad;
- _TIFFmemcpy(cp, tif->tif_base + dir->tdir_offset, 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;
- }
- }
- return (cc);
-bad:
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error fetching data for field \"%s\"",
- _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
- return ((tsize_t) 0);
-}
-
-/*
- * Fetch an ASCII item from the file.
- */
-static tsize_t
-TIFFFetchString(TIFF* tif, TIFFDirEntry* dir, char* cp)
-{
- if (dir->tdir_count <= 4) {
- uint32 l = dir->tdir_offset;
- if (tif->tif_flags & TIFF_SWAB)
- TIFFSwabLong(&l);
- _TIFFmemcpy(cp, &l, dir->tdir_count);
- return (1);
- }
- return (TIFFFetchData(tif, dir, cp));
-}
-
-/*
- * Convert numerator+denominator to float.
- */
-static int
-cvtRational(TIFF* tif, TIFFDirEntry* dir, uint32 num, uint32 denom, float* rv)
-{
- if (denom == 0) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "%s: Rational with zero denominator (num = %lu)",
- _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name, num);
- return (0);
- } else {
- if (dir->tdir_type == TIFF_RATIONAL)
- *rv = ((float)num / (float)denom);
- else
- *rv = ((float)(int32)num / (float)(int32)denom);
- return (1);
- }
-}
-
-/*
- * Fetch a rational item from the file
- * at offset off and return the value
- * as a floating point number.
- */
-static float
-TIFFFetchRational(TIFF* tif, TIFFDirEntry* dir)
-{
- uint32 l[2];
- float v;
-
- return (!TIFFFetchData(tif, dir, (char *)l) ||
- !cvtRational(tif, dir, l[0], l[1], &v) ? 1.0f : v);
-}
-
-/*
- * Fetch a single floating point value
- * from the offset field and return it
- * as a native float.
- */
-static float
-TIFFFetchFloat(TIFF* tif, TIFFDirEntry* dir)
-{
- /* This appears to be a flagrant bug in the TIFF library, yet I
- actually don't understand how it could have ever worked the old
- way. Look at the comments in my new code and you'll understand. */
-#if (0)
- float v = (float)
- TIFFExtractData(tif, dir->tdir_type, dir->tdir_offset);
- TIFFCvtIEEEFloatToNative(tif, 1, &v);
-#else
- float v;
- /* This is a little bit tricky - if we just cast the uint32 to a float,
- C will perform a numerical conversion, which is not what we want.
- We want to take the actual bit pattern in the uint32 and interpret
- it as a float. Thus we cast a uint32 * into a float * and then
- dereference to get v. */
- uint32 l = (uint32)
- TIFFExtractData(tif, dir->tdir_type, dir->tdir_offset);
- v = * (float *) &l;
- TIFFCvtIEEEFloatToNative(tif, 1, &v);
-#endif
- return (v);
-
-}
-
-/*
- * Fetch an array of BYTE or SBYTE values.
- */
-static int
-TIFFFetchByteArray(TIFF* tif, TIFFDirEntry* dir, uint16* v)
-{
- if (dir->tdir_count <= 4) {
- /*
- * Extract data from offset field.
- */
- if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
- switch (dir->tdir_count) {
- case 4: v[3] = dir->tdir_offset & 0xff;
- case 3: v[2] = (dir->tdir_offset >> 8) & 0xff;
- case 2: v[1] = (dir->tdir_offset >> 16) & 0xff;
- case 1: v[0] = dir->tdir_offset >> 24;
- }
- } else {
- switch (dir->tdir_count) {
- case 4: v[3] = dir->tdir_offset >> 24;
- case 3: v[2] = (dir->tdir_offset >> 16) & 0xff;
- case 2: v[1] = (dir->tdir_offset >> 8) & 0xff;
- case 1: v[0] = dir->tdir_offset & 0xff;
- }
- }
- return (1);
- } else
- return (TIFFFetchData(tif, dir, (char*) v) != 0); /* XXX */
-}
-
-/*
- * Fetch an array of SHORT or SSHORT values.
- */
-static int
-TIFFFetchShortArray(TIFF* tif, TIFFDirEntry* dir, uint16* v)
-{
- if (dir->tdir_count <= 2) {
- if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
- switch (dir->tdir_count) {
- case 2: v[1] = dir->tdir_offset & 0xffff;
- case 1: v[0] = dir->tdir_offset >> 16;
- }
- } else {
- switch (dir->tdir_count) {
- case 2: v[1] = dir->tdir_offset >> 16;
- case 1: v[0] = dir->tdir_offset & 0xffff;
- }
- }
- return (1);
- } else
- return (TIFFFetchData(tif, dir, (char *)v) != 0);
-}
-
-/*
- * Fetch a pair of SHORT or BYTE values.
- */
-static int
-TIFFFetchShortPair(TIFF* tif, TIFFDirEntry* dir)
-{
- uint16 v[2];
- int ok = 0;
-
- switch (dir->tdir_type) {
- case TIFF_SHORT:
- case TIFF_SSHORT:
- ok = TIFFFetchShortArray(tif, dir, v);
- break;
- case TIFF_BYTE:
- case TIFF_SBYTE:
- ok = TIFFFetchByteArray(tif, dir, v);
- break;
- }
- if (ok)
- TIFFSetField(tif, dir->tdir_tag, v[0], v[1]);
- return (ok);
-}
-
-/*
- * Fetch an array of LONG or SLONG values.
- */
-static int
-TIFFFetchLongArray(TIFF* tif, TIFFDirEntry* dir, uint32* v)
-{
- if (dir->tdir_count == 1) {
- v[0] = dir->tdir_offset;
- return (1);
- } else
- return (TIFFFetchData(tif, dir, (char*) v) != 0);
-}
-
-/*
- * Fetch an array of RATIONAL or SRATIONAL values.
- */
-static int
-TIFFFetchRationalArray(TIFF* tif, TIFFDirEntry* dir, float* v)
-{
- int ok = 0;
- uint32* l;
-
- l = (uint32*)CheckMalloc(tif,
- dir->tdir_count*TIFFDataWidth(dir->tdir_type),
- "to fetch array of rationals");
- if (l) {
- if (TIFFFetchData(tif, dir, (char *)l)) {
- uint32 i;
- for (i = 0; i < dir->tdir_count; i++) {
- ok = cvtRational(tif, dir,
- l[2*i+0], l[2*i+1], &v[i]);
- if (!ok)
- break;
- }
- }
- _TIFFfree((char *)l);
- }
- return (ok);
-}
-
-/*
- * Fetch an array of FLOAT values.
- */
-static int
-TIFFFetchFloatArray(TIFF* tif, TIFFDirEntry* dir, float* v)
-{
-
- if (dir->tdir_count == 1) {
- v[0] = *(float*) &dir->tdir_offset;
- TIFFCvtIEEEFloatToNative(tif, dir->tdir_count, v);
- return (1);
- } else if (TIFFFetchData(tif, dir, (char*) v)) {
- TIFFCvtIEEEFloatToNative(tif, dir->tdir_count, v);
- return (1);
- } else
- return (0);
-}
-
-/*
- * Fetch an array of DOUBLE values.
- */
-static int
-TIFFFetchDoubleArray(TIFF* tif, TIFFDirEntry* dir, double* v)
-{
- if (TIFFFetchData(tif, dir, (char*) v)) {
- TIFFCvtIEEEDoubleToNative(tif, dir->tdir_count, v);
- return (1);
- } else
- return (0);
-}
-
-/*
- * Fetch an array of ANY values. The actual values are
- * returned as doubles which should be able hold all the
- * types. Yes, there really should be an tany_t to avoid
- * this potential non-portability ... Note in particular
- * that we assume that the double return value vector is
- * large enough to read in any fundamental type. We use
- * that vector as a buffer to read in the base type vector
- * and then convert it in place to double (from end
- * to front of course).
- */
-static int
-TIFFFetchAnyArray(TIFF* tif, TIFFDirEntry* dir, double* v)
-{
- int i;
-
- switch (dir->tdir_type) {
- case TIFF_BYTE:
- case TIFF_SBYTE:
- if (!TIFFFetchByteArray(tif, dir, (uint16*) v))
- return (0);
- if (dir->tdir_type == TIFF_BYTE) {
- uint16* vp = (uint16*) v;
- for (i = dir->tdir_count-1; i >= 0; i--)
- v[i] = vp[i];
- } else {
- int16* vp = (int16*) v;
- for (i = dir->tdir_count-1; i >= 0; i--)
- v[i] = vp[i];
- }
- break;
- case TIFF_SHORT:
- case TIFF_SSHORT:
- if (!TIFFFetchShortArray(tif, dir, (uint16*) v))
- return (0);
- if (dir->tdir_type == TIFF_SHORT) {
- uint16* vp = (uint16*) v;
- for (i = dir->tdir_count-1; i >= 0; i--)
- v[i] = vp[i];
- } else {
- int16* vp = (int16*) v;
- for (i = dir->tdir_count-1; i >= 0; i--)
- v[i] = vp[i];
- }
- break;
- case TIFF_LONG:
- case TIFF_SLONG:
- if (!TIFFFetchLongArray(tif, dir, (uint32*) v))
- return (0);
- if (dir->tdir_type == TIFF_LONG) {
- uint32* vp = (uint32*) v;
- for (i = dir->tdir_count-1; i >= 0; i--)
- v[i] = vp[i];
- } else {
- int32* vp = (int32*) v;
- for (i = dir->tdir_count-1; i >= 0; i--)
- v[i] = vp[i];
- }
- break;
- case TIFF_RATIONAL:
- case TIFF_SRATIONAL:
- if (!TIFFFetchRationalArray(tif, dir, (float*) v))
- return (0);
- { float* vp = (float*) v;
- for (i = dir->tdir_count-1; i >= 0; i--)
- v[i] = vp[i];
- }
- break;
- case TIFF_FLOAT:
- if (!TIFFFetchFloatArray(tif, dir, (float*) v))
- return (0);
- { float* vp = (float*) v;
- for (i = dir->tdir_count-1; i >= 0; i--)
- v[i] = vp[i];
- }
- break;
- case TIFF_DOUBLE:
- return (TIFFFetchDoubleArray(tif, dir, (double*) v));
- default:
- /* TIFF_NOTYPE */
- /* TIFF_ASCII */
- /* TIFF_UNDEFINED */
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "Cannot read TIFF_ANY type %d for field \"%s\"",
- _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
- return (0);
- }
- return (1);
-}
-
-
-/*
- * Fetch a tag that is not handled by special case code.
- */
-/* The standard function TIFFFetchNormalTag() could definitely be replaced
- with a simple call to this function, just adding TIFFSetField() as the
- last argument. */
-static int
-TIFFFetchNormalSubTag(TIFF* tif, TIFFDirEntry* dp, const TIFFFieldInfo* fip,
- int (*setFieldFn)(TIFF *tif, ttag_t tag, ...))
-{
- static char mesg[] = "to fetch tag value";
- int ok = 0;
-
- if (dp->tdir_count > 1) { /* array of values */
- char* cp = NULL;
-
- switch (dp->tdir_type) {
- case TIFF_BYTE:
- case TIFF_SBYTE:
- /* NB: always expand BYTE values to shorts */
- cp = CheckMalloc(tif,
- dp->tdir_count * sizeof (uint16), mesg);
- ok = cp && TIFFFetchByteArray(tif, dp, (uint16*) cp);
- break;
- case TIFF_SHORT:
- case TIFF_SSHORT:
- cp = CheckMalloc(tif,
- dp->tdir_count * sizeof (uint16), mesg);
- ok = cp && TIFFFetchShortArray(tif, dp, (uint16*) cp);
- break;
- case TIFF_LONG:
- case TIFF_SLONG:
- cp = CheckMalloc(tif,
- dp->tdir_count * sizeof (uint32), mesg);
- ok = cp && TIFFFetchLongArray(tif, dp, (uint32*) cp);
- break;
- case TIFF_RATIONAL:
- case TIFF_SRATIONAL:
- cp = CheckMalloc(tif,
- dp->tdir_count * sizeof (float), mesg);
- ok = cp && TIFFFetchRationalArray(tif, dp, (float*) cp);
- break;
- case TIFF_FLOAT:
- cp = CheckMalloc(tif,
- dp->tdir_count * sizeof (float), mesg);
- ok = cp && TIFFFetchFloatArray(tif, dp, (float*) cp);
- break;
- case TIFF_DOUBLE:
- cp = CheckMalloc(tif,
- dp->tdir_count * sizeof (double), mesg);
- ok = cp && TIFFFetchDoubleArray(tif, dp, (double*) cp);
- break;
- case TIFF_ASCII:
- case TIFF_UNDEFINED: /* bit of a cheat... */
- /*
- * Some vendors write strings w/o the trailing
- * NULL byte, so always append one just in case.
- */
- cp = CheckMalloc(tif, dp->tdir_count+1, mesg);
- if (ok = (cp && TIFFFetchString(tif, dp, cp)))
- cp[dp->tdir_count] = '\0'; /* XXX */
- break;
- }
- if (ok) {
- ok = (fip->field_passcount ?
- (*setFieldFn)(tif, dp->tdir_tag, dp->tdir_count, cp)
- : (*setFieldFn)(tif, dp->tdir_tag, cp));
- }
- if (cp != NULL)
- _TIFFfree(cp);
- } else if (CheckDirCount(tif, dp, 1)) { /* singleton value */
- switch (dp->tdir_type) {
- case TIFF_BYTE:
- case TIFF_SBYTE:
- case TIFF_SHORT:
- case TIFF_SSHORT:
- /*
- * If the tag is also acceptable as a LONG or SLONG
- * then (*setFieldFn) will expect an uint32 parameter
- * passed to it (through varargs). Thus, for machines
- * where sizeof (int) != sizeof (uint32) we must do
- * a careful check here. It's hard to say if this
- * is worth optimizing.
- *
- * NB: We use TIFFFieldWithTag here knowing that
- * it returns us the first entry in the table
- * for the tag and that that entry is for the
- * widest potential data type the tag may have.
- */
- { TIFFDataType type = fip->field_type;
- if (type != TIFF_LONG && type != TIFF_SLONG) {
- uint16 v = (uint16)
- TIFFExtractData(tif, dp->tdir_type, dp->tdir_offset);
- ok = (fip->field_passcount ?
- (*setFieldFn)(tif, dp->tdir_tag, 1, &v)
- : (*setFieldFn)(tif, dp->tdir_tag, v));
- break;
- }
- }
- /* fall thru... */
- case TIFF_LONG:
- case TIFF_SLONG:
- { uint32 v32 =
- TIFFExtractData(tif, dp->tdir_type, dp->tdir_offset);
- ok = (fip->field_passcount ?
- (*setFieldFn)(tif, dp->tdir_tag, 1, &v32)
- : (*setFieldFn)(tif, dp->tdir_tag, v32));
- }
- break;
- case TIFF_RATIONAL:
- case TIFF_SRATIONAL:
- case TIFF_FLOAT:
- { float v = (dp->tdir_type == TIFF_FLOAT ?
- TIFFFetchFloat(tif, dp)
- : TIFFFetchRational(tif, dp));
- ok = (fip->field_passcount ?
- (*setFieldFn)(tif, dp->tdir_tag, 1, &v)
- : (*setFieldFn)(tif, dp->tdir_tag, v));
- }
- break;
- case TIFF_DOUBLE:
- { double v;
- ok = (TIFFFetchDoubleArray(tif, dp, &v) &&
- (fip->field_passcount ?
- (*setFieldFn)(tif, dp->tdir_tag, 1, &v)
- : (*setFieldFn)(tif, dp->tdir_tag, v))
- );
- }
- break;
- case TIFF_ASCII:
- case TIFF_UNDEFINED: /* bit of a cheat... */
- { char c[2];
- if (ok = (TIFFFetchString(tif, dp, c) != 0)) {
- c[1] = '\0'; /* XXX paranoid */
- ok = (*setFieldFn)(tif, dp->tdir_tag, c);
- }
- }
- break;
- }
- }
- return (ok);
-}
-
-/* Everything after this is exactly duplicated from the standard tif_dirread.c
- file, necessitated by the fact that they are declared static there so
- we can't call them!
-*/
-#define NITEMS(x) (sizeof (x) / sizeof (x[0]))
-/*
- * Fetch samples/pixel short values for
- * the specified tag and verify that
- * all values are the same.
- */
-static int
-TIFFFetchPerSampleShorts(TIFF* tif, TIFFDirEntry* dir, int* pl)
-{
- int samples = tif->tif_dir.td_samplesperpixel;
- int status = 0;
-
- if (CheckDirCount(tif, dir, (uint32) samples)) {
- uint16 buf[10];
- uint16* v = buf;
-
- if (samples > NITEMS(buf))
- v = (uint16*) _TIFFmalloc(samples * sizeof (uint16));
- if (TIFFFetchShortArray(tif, dir, v)) {
- int i;
- for (i = 1; i < samples; i++)
- if (v[i] != v[0]) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "Cannot handle different per-sample values for field \"%s\"",
- _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
- goto bad;
- }
- *pl = v[0];
- status = 1;
- }
- bad:
- if (v != buf)
- _TIFFfree((char*) v);
- }
- return (status);
-}
-
-/*
- * Fetch samples/pixel ANY values for
- * the specified tag and verify that
- * all values are the same.
- */
-static int
-TIFFFetchPerSampleAnys(TIFF* tif, TIFFDirEntry* dir, double* pl)
-{
- int samples = (int) tif->tif_dir.td_samplesperpixel;
- int status = 0;
-
- if (CheckDirCount(tif, dir, (uint32) samples)) {
- double buf[10];
- double* v = buf;
-
- if (samples > NITEMS(buf))
- v = (double*) _TIFFmalloc(samples * sizeof (double));
- if (TIFFFetchAnyArray(tif, dir, v)) {
- int i;
- for (i = 1; i < samples; i++)
- if (v[i] != v[0]) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "Cannot handle different per-sample values for field \"%s\"",
- _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
- goto bad;
- }
- *pl = v[0];
- status = 1;
- }
- bad:
- if (v != buf)
- _TIFFfree(v);
- }
- return (status);
-}
-#undef NITEMS
-
-/*
- * Fetch a set of offsets or lengths.
- * While this routine says "strips",
- * in fact it's also used for tiles.
- */
-static int
-TIFFFetchStripThing(TIFF* tif, TIFFDirEntry* dir, long nstrips, uint32** lpp)
-{
- register uint32* lp;
- int status;
-
- if (!CheckDirCount(tif, dir, (uint32) nstrips))
- return (0);
- /*
- * Allocate space for strip information.
- */
- if (*lpp == NULL &&
- (*lpp = (uint32 *)CheckMalloc(tif,
- nstrips * sizeof (uint32), "for strip array")) == NULL)
- return (0);
- lp = *lpp;
- if (dir->tdir_type == (int)TIFF_SHORT) {
- /*
- * Handle uint16->uint32 expansion.
- */
- uint16* dp = (uint16*) CheckMalloc(tif,
- dir->tdir_count* sizeof (uint16), "to fetch strip tag");
- if (dp == NULL)
- return (0);
- if (status = TIFFFetchShortArray(tif, dir, dp)) {
- register uint16* wp = dp;
- while (nstrips-- > 0)
- *lp++ = *wp++;
- }
- _TIFFfree((char*) dp);
- } else
- status = TIFFFetchLongArray(tif, dir, lp);
- return (status);
-}
-
-#define NITEMS(x) (sizeof (x) / sizeof (x[0]))
-/*
- * Fetch and set the ExtraSamples tag.
- */
-static int
-TIFFFetchExtraSamples(TIFF* tif, TIFFDirEntry* dir)
-{
- uint16 buf[10];
- uint16* v = buf;
- int status;
-
- if (dir->tdir_count > NITEMS(buf))
- v = (uint16*) _TIFFmalloc(dir->tdir_count * sizeof (uint16));
- if (dir->tdir_type == TIFF_BYTE)
- status = TIFFFetchByteArray(tif, dir, v);
- else
- status = TIFFFetchShortArray(tif, dir, v);
- if (status)
- status = TIFFSetField(tif, dir->tdir_tag, dir->tdir_count, v);
- if (v != buf)
- _TIFFfree((char*) v);
- return (status);
-}
-#undef NITEMS
-
-#ifdef COLORIMETRY_SUPPORT
-/*
- * Fetch and set the RefBlackWhite tag.
- */
-static int
-TIFFFetchRefBlackWhite(TIFF* tif, TIFFDirEntry* dir)
-{
- static char mesg[] = "for \"ReferenceBlackWhite\" array";
- char* cp;
- int ok;
-
- if (dir->tdir_type == TIFF_RATIONAL)
- return (1/*TIFFFetchNormalTag(tif, dir) just so linker won't complain - this part of the code is never used anyway */);
- /*
- * Handle LONG's for backward compatibility.
- */
- cp = CheckMalloc(tif, dir->tdir_count * sizeof (uint32), mesg);
- if (ok = (cp && TIFFFetchLongArray(tif, dir, (uint32*) cp))) {
- float* fp = (float*)
- CheckMalloc(tif, dir->tdir_count * sizeof (float), mesg);
- if (ok = (fp != NULL)) {
- uint32 i;
- for (i = 0; i < dir->tdir_count; i++)
- fp[i] = (float)((uint32*) cp)[i];
- ok = TIFFSetField(tif, dir->tdir_tag, fp);
- _TIFFfree((char*) fp);
- }
- }
- if (cp)
- _TIFFfree(cp);
- return (ok);
-}
-#endif
-
-#if STRIPCHOP_SUPPORT
-/*
- * Replace a single strip (tile) of uncompressed data by
- * multiple strips (tiles), each approximately 8Kbytes.
- * This is useful for dealing with large images or
- * for dealing with machines with a limited amount
- * memory.
- */
-static void
-ChopUpSingleUncompressedStrip(TIFF* tif)
-{
- register TIFFDirectory *td = &tif->tif_dir;
- uint32 bytecount = td->td_stripbytecount[0];
- uint32 offset = td->td_stripoffset[0];
- tsize_t rowbytes = TIFFVTileSize(tif, 1), stripbytes;
- tstrip_t strip, nstrips, rowsperstrip;
- uint32* newcounts;
- uint32* newoffsets;
-
- /*
- * Make the rows hold at least one
- * scanline, but fill 8k if possible.
- */
- if (rowbytes > 8192) {
- stripbytes = rowbytes;
- rowsperstrip = 1;
- } else {
- rowsperstrip = 8192 / rowbytes;
- stripbytes = rowbytes * rowsperstrip;
- }
- /* never increase the number of strips in an image */
- if (rowsperstrip >= td->td_rowsperstrip)
- return;
- nstrips = (tstrip_t) TIFFhowmany(bytecount, stripbytes);
- newcounts = (uint32*) CheckMalloc(tif, nstrips * sizeof (uint32),
- "for chopped \"StripByteCounts\" array");
- newoffsets = (uint32*) CheckMalloc(tif, nstrips * sizeof (uint32),
- "for chopped \"StripOffsets\" array");
- if (newcounts == NULL || newoffsets == NULL) {
- /*
- * Unable to allocate new strip information, give
- * up and use the original one strip information.
- */
- if (newcounts != NULL)
- _TIFFfree(newcounts);
- if (newoffsets != NULL)
- _TIFFfree(newoffsets);
- return;
- }
- /*
- * Fill the strip information arrays with
- * new bytecounts and offsets that reflect
- * the broken-up format.
- */
- for (strip = 0; strip < nstrips; strip++) {
- if (stripbytes > bytecount)
- stripbytes = bytecount;
- newcounts[strip] = stripbytes;
- newoffsets[strip] = offset;
- offset += stripbytes;
- bytecount -= stripbytes;
- }
- /*
- * Replace old single strip info with multi-strip info.
- */
- td->td_stripsperimage = td->td_nstrips = nstrips;
- TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
-
- _TIFFfree(td->td_stripbytecount);
- _TIFFfree(td->td_stripoffset);
- td->td_stripbytecount = newcounts;
- td->td_stripoffset = newoffsets;
-}
-#endif /* STRIPCHOP_SUPPORT */
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 8
- * fill-column: 78
- * End:
- */