void
TIFFCleanup(TIFF *tif)
{
if (tif->tif_mode != O_RDONLY)
/*
* Flush buffered data and directory (if dirty).
*/
TIFFFlush(tif);
(*tif->tif_cleanup)(tif);
TIFFFreeDirectory(tif);
if (tif->tif_dirlist)
_TIFFfree(tif->tif_dirlist);
/* Clean up client info links */
while (tif->tif_clientinfo)
{
TIFFClientInfoLink *link = tif->tif_clientinfo;
tif->tif_clientinfo = link->next;
_TIFFfree(link->name);
_TIFFfree(link);
}
if (tif->tif_rawdata && (tif->tif_flags & TIFF_MYBUFFER))
_TIFFfree(tif->tif_rawdata);
if (isMapped(tif))
TIFFUnmapFileContents(tif, tif->tif_base, tif->tif_size);
/* Clean up custom fields */
if (tif->tif_nfields > 0)
{
size_t i;
for (i = 0; i < tif->tif_nfields; i++)
{
TIFFFieldInfo *fld = tif->tif_fieldinfo[i];
if (fld->field_bit == FIELD_CUSTOM &&
strncmp("Tag ", fld->field_name, 4) == 0)
{
_TIFFfree(fld->field_name);
_TIFFfree(fld);
}
}
_TIFFfree(tif->tif_fieldinfo);
}
_TIFFfree(tif);
}
void
TIFFClose(TIFF* tif)
{
if (tif->tif_mode != O_RDONLY)
/*
* Flush buffered data and directory (if dirty).
*/
TIFFFlush(tif);
(*tif->tif_cleanup)(tif);
TIFFFreeDirectory(tif);
if (tif->tif_rawdata && (tif->tif_flags&TIFF_MYBUFFER))
_TIFFfree(tif->tif_rawdata);
if (isMapped(tif))
TIFFUnmapFileContents(tif, tif->tif_base, tif->tif_size);
(void) TIFFCloseFile(tif);
if (tif->tif_fieldinfo)
_TIFFfree(tif->tif_fieldinfo);
_TIFFfree(tif);
}
/*
* Write the contents of the current directory
* to the specified file. This routine doesn't
* handle overwriting a directory with auxiliary
* storage that's been changed.
*/
static int
_TIFFWriteDirectory(TIFF* tif, int done)
{
uint16 dircount;
toff_t diroff;
ttag_t tag;
uint32 nfields;
tsize_t dirsize;
char* data;
TIFFDirEntry* dir;
TIFFDirectory* td;
u_long b, fields[FIELD_SETLONGS];
int fi, nfi;
if (tif->tif_mode == O_RDONLY)
return (1);
/*
* Clear write state so that subsequent images with
* different characteristics get the right buffers
* setup for them.
*/
if (done)
{
if (tif->tif_flags & TIFF_POSTENCODE) {
tif->tif_flags &= ~TIFF_POSTENCODE;
if (!(*tif->tif_postencode)(tif)) {
TIFFError(tif->tif_name,
"Error post-encoding before directory write");
return (0);
}
}
(*tif->tif_close)(tif); /* shutdown encoder */
/*
* Flush any data that might have been written
* by the compression close+cleanup routines.
*/
if (tif->tif_rawcc > 0 && !TIFFFlushData1(tif)) {
TIFFError(tif->tif_name,
"Error flushing data before directory write");
return (0);
}
if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
_TIFFfree(tif->tif_rawdata);
tif->tif_rawdata = NULL;
tif->tif_rawcc = 0;
tif->tif_rawdatasize = 0;
}
tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP);
}
td = &tif->tif_dir;
/*
* Size the directory so that we can calculate
* offsets for the data items that aren't kept
* in-place in each field.
*/
nfields = 0;
for (b = 0; b <= FIELD_LAST; b++)
if (TIFFFieldSet(tif, b) && b != FIELD_CUSTOM)
nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
nfields += td->td_customValueCount;
dirsize = nfields * sizeof (TIFFDirEntry);
data = (char*) _TIFFmalloc(dirsize);
if (data == NULL) {
TIFFError(tif->tif_name,
"Cannot write directory, out of space");
return (0);
}
/*
* Directory hasn't been placed yet, put
* it at the end of the file and link it
* into the existing directory structure.
*/
if (tif->tif_diroff == 0 && !TIFFLinkDirectory(tif))
goto bad;
tif->tif_dataoff = (toff_t)(
tif->tif_diroff + sizeof (uint16) + dirsize + sizeof (toff_t));
if (tif->tif_dataoff & 1)
tif->tif_dataoff++;
(void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
tif->tif_curdir++;
dir = (TIFFDirEntry*) data;
/*
* Setup external form of directory
* entries and write data items.
*/
_TIFFmemcpy(fields, td->td_fieldsset, sizeof (fields));
/*
* Write out ExtraSamples tag only if
* extra samples are present in the data.
*/
if (FieldSet(fields, FIELD_EXTRASAMPLES) && !td->td_extrasamples) {
ResetFieldBit(fields, FIELD_EXTRASAMPLES);
nfields--;
dirsize -= sizeof (TIFFDirEntry);
} /*XXX*/
for (fi = 0, nfi = tif->tif_nfields; nfi > 0; nfi--, fi++) {
const TIFFFieldInfo* fip = tif->tif_fieldinfo[fi];
/*
** For custom fields, we test to see if the custom field
** is set or not. For normal fields, we just use the
** FieldSet test.
*/
if( fip->field_bit == FIELD_CUSTOM )
{
int ci, is_set = FALSE;
for( ci = 0; ci < td->td_customValueCount; ci++ )
is_set |= (td->td_customValues[ci].info == fip);
if( !is_set )
continue;
}
else if (!FieldSet(fields, fip->field_bit))
continue;
/*
** Handle other fields.
*/
switch (fip->field_bit)
{
case FIELD_STRIPOFFSETS:
/*
* We use one field bit for both strip and tile
* offsets, and so must be careful in selecting
* the appropriate field descriptor (so that tags
* are written in sorted order).
*/
tag = isTiled(tif) ?
TIFFTAG_TILEOFFSETS : TIFFTAG_STRIPOFFSETS;
if (tag != fip->field_tag)
continue;
if (!TIFFWriteLongArray(tif, TIFF_LONG, tag, dir,
(uint32) td->td_nstrips, td->td_stripoffset))
goto bad;
break;
case FIELD_STRIPBYTECOUNTS:
/*
* We use one field bit for both strip and tile
* byte counts, and so must be careful in selecting
* the appropriate field descriptor (so that tags
* are written in sorted order).
*/
tag = isTiled(tif) ?
TIFFTAG_TILEBYTECOUNTS : TIFFTAG_STRIPBYTECOUNTS;
if (tag != fip->field_tag)
continue;
if (!TIFFWriteLongArray(tif, TIFF_LONG, tag, dir,
(uint32) td->td_nstrips, td->td_stripbytecount))
goto bad;
break;
case FIELD_ROWSPERSTRIP:
TIFFSetupShortLong(tif, TIFFTAG_ROWSPERSTRIP,
dir, td->td_rowsperstrip);
break;
case FIELD_COLORMAP:
if (!TIFFWriteShortTable(tif, TIFFTAG_COLORMAP, dir,
3, td->td_colormap))
goto bad;
break;
case FIELD_IMAGEDIMENSIONS:
TIFFSetupShortLong(tif, TIFFTAG_IMAGEWIDTH,
dir++, td->td_imagewidth);
TIFFSetupShortLong(tif, TIFFTAG_IMAGELENGTH,
dir, td->td_imagelength);
break;
case FIELD_TILEDIMENSIONS:
TIFFSetupShortLong(tif, TIFFTAG_TILEWIDTH,
dir++, td->td_tilewidth);
TIFFSetupShortLong(tif, TIFFTAG_TILELENGTH,
dir, td->td_tilelength);
break;
case FIELD_COMPRESSION:
TIFFSetupShort(tif, TIFFTAG_COMPRESSION,
dir, td->td_compression);
break;
case FIELD_PHOTOMETRIC:
TIFFSetupShort(tif, TIFFTAG_PHOTOMETRIC,
dir, td->td_photometric);
break;
case FIELD_POSITION:
WriteRationalPair(TIFF_RATIONAL,
TIFFTAG_XPOSITION, td->td_xposition,
TIFFTAG_YPOSITION, td->td_yposition);
break;
case FIELD_RESOLUTION:
WriteRationalPair(TIFF_RATIONAL,
TIFFTAG_XRESOLUTION, td->td_xresolution,
TIFFTAG_YRESOLUTION, td->td_yresolution);
break;
case FIELD_BITSPERSAMPLE:
case FIELD_MINSAMPLEVALUE:
case FIELD_MAXSAMPLEVALUE:
case FIELD_SAMPLEFORMAT:
if (!TIFFWritePerSampleShorts(tif, fip->field_tag, dir))
goto bad;
break;
case FIELD_SMINSAMPLEVALUE:
case FIELD_SMAXSAMPLEVALUE:
if (!TIFFWritePerSampleAnys(tif,
_TIFFSampleToTagType(tif), fip->field_tag, dir))
goto bad;
break;
case FIELD_PAGENUMBER:
case FIELD_HALFTONEHINTS:
#ifdef YCBCR_SUPPORT
case FIELD_YCBCRSUBSAMPLING:
#endif
#ifdef CMYK_SUPPORT
case FIELD_DOTRANGE:
#endif
if (!TIFFSetupShortPair(tif, fip->field_tag, dir))
goto bad;
break;
#ifdef CMYK_SUPPORT
case FIELD_INKNAMES:
if (!TIFFWriteInkNames(tif, dir))
goto bad;
break;
#endif
#ifdef COLORIMETRY_SUPPORT
case FIELD_TRANSFERFUNCTION:
if (!TIFFWriteTransferFunction(tif, dir))
goto bad;
break;
#endif
#if SUBIFD_SUPPORT
case FIELD_SUBIFD:
if (!TIFFWriteNormalTag(tif, dir, fip))
goto bad;
/*
* Total hack: if this directory includes a SubIFD
* tag then force the next <n> directories to be
* written as ``sub directories'' of this one. This
* is used to write things like thumbnails and
* image masks that one wants to keep out of the
* normal directory linkage access mechanism.
*/
if (dir->tdir_count > 0) {
tif->tif_flags |= TIFF_INSUBIFD;
tif->tif_nsubifd = (uint16) dir->tdir_count;
if (dir->tdir_count > 1)
tif->tif_subifdoff = dir->tdir_offset;
else
tif->tif_subifdoff = (uint32)(
tif->tif_diroff
+ sizeof (uint16)
+ ((char*)&dir->tdir_offset-data));
}
break;
#endif
default:
if (!TIFFWriteNormalTag(tif, dir, fip))
goto bad;
break;
}
dir++;
if( fip->field_bit != FIELD_CUSTOM )
ResetFieldBit(fields, fip->field_bit);
}
/*
* Write directory.
*/
dircount = (uint16) nfields;
diroff = (uint32) tif->tif_nextdiroff;
if (tif->tif_flags & TIFF_SWAB) {
/*
* The file's byte order is opposite to the
* native machine architecture. We overwrite
* the directory information with impunity
* because it'll be released below after we
* write it to the file. Note that all the
* other tag construction routines assume that
* we do this byte-swapping; i.e. they only
* byte-swap indirect data.
*/
for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) {
TIFFSwabArrayOfShort(&dir->tdir_tag, 2);
TIFFSwabArrayOfLong(&dir->tdir_count, 2);
}
dircount = (uint16) nfields;
TIFFSwabShort(&dircount);
TIFFSwabLong(&diroff);
}
(void) TIFFSeekFile(tif, tif->tif_diroff, SEEK_SET);
if (!WriteOK(tif, &dircount, sizeof (dircount))) {
TIFFError(tif->tif_name, "Error writing directory count");
goto bad;
}
if (!WriteOK(tif, data, dirsize)) {
TIFFError(tif->tif_name, "Error writing directory contents");
goto bad;
}
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFError(tif->tif_name, "Error writing directory link");
goto bad;
}
if (done) {
TIFFFreeDirectory(tif);
tif->tif_flags &= ~TIFF_DIRTYDIRECT;
(*tif->tif_cleanup)(tif);
/*
* Reset directory-related state for subsequent
* directories.
*/
TIFFCreateDirectory(tif);
}
_TIFFfree(data);
return (1);
bad:
_TIFFfree(data);
return (0);
}
toff_t GTIFFWriteDirectory(TIFF *hTIFF, int nSubfileType, int nXSize, int nYSize,
int nBitsPerPixel, int nPlanarConfig, int nSamples,
int nBlockXSize, int nBlockYSize,
int bTiled, int nCompressFlag, int nPhotometric,
int nSampleFormat,
int nPredictor,
unsigned short *panRed,
unsigned short *panGreen,
unsigned short *panBlue,
int nExtraSamples,
unsigned short *panExtraSampleValues,
const char *pszMetadata )
{
toff_t nBaseDirOffset;
toff_t nOffset;
nBaseDirOffset = TIFFCurrentDirOffset( hTIFF );
#if defined(TIFFLIB_VERSION) && TIFFLIB_VERSION >= 20051201 /* 3.8.0 */
TIFFFreeDirectory( hTIFF );
#endif
TIFFCreateDirectory( hTIFF );
/* -------------------------------------------------------------------- */
/* Setup TIFF fields. */
/* -------------------------------------------------------------------- */
TIFFSetField( hTIFF, TIFFTAG_IMAGEWIDTH, nXSize );
TIFFSetField( hTIFF, TIFFTAG_IMAGELENGTH, nYSize );
if( nSamples == 1 )
TIFFSetField( hTIFF, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG );
else
TIFFSetField( hTIFF, TIFFTAG_PLANARCONFIG, nPlanarConfig );
TIFFSetField( hTIFF, TIFFTAG_BITSPERSAMPLE, nBitsPerPixel );
TIFFSetField( hTIFF, TIFFTAG_SAMPLESPERPIXEL, nSamples );
TIFFSetField( hTIFF, TIFFTAG_COMPRESSION, nCompressFlag );
TIFFSetField( hTIFF, TIFFTAG_PHOTOMETRIC, nPhotometric );
TIFFSetField( hTIFF, TIFFTAG_SAMPLEFORMAT, nSampleFormat );
if( bTiled )
{
TIFFSetField( hTIFF, TIFFTAG_TILEWIDTH, nBlockXSize );
TIFFSetField( hTIFF, TIFFTAG_TILELENGTH, nBlockYSize );
}
else
TIFFSetField( hTIFF, TIFFTAG_ROWSPERSTRIP, nBlockYSize );
TIFFSetField( hTIFF, TIFFTAG_SUBFILETYPE, nSubfileType );
if (panExtraSampleValues != NULL)
{
TIFFSetField(hTIFF, TIFFTAG_EXTRASAMPLES, nExtraSamples, panExtraSampleValues );
}
if ( nCompressFlag == COMPRESSION_LZW ||
nCompressFlag == COMPRESSION_ADOBE_DEFLATE )
TIFFSetField( hTIFF, TIFFTAG_PREDICTOR, nPredictor );
/* -------------------------------------------------------------------- */
/* Write color table if one is present. */
/* -------------------------------------------------------------------- */
if( panRed != NULL )
{
TIFFSetField( hTIFF, TIFFTAG_COLORMAP, panRed, panGreen, panBlue );
}
/* -------------------------------------------------------------------- */
/* Write metadata if we have some. */
/* -------------------------------------------------------------------- */
if( pszMetadata && strlen(pszMetadata) > 0 )
TIFFSetField( hTIFF, TIFFTAG_GDAL_METADATA, pszMetadata );
/* -------------------------------------------------------------------- */
/* Write directory, and return byte offset. */
/* -------------------------------------------------------------------- */
if( TIFFWriteCheck( hTIFF, bTiled, "GTIFFWriteDirectory" ) == 0 )
{
TIFFSetSubDirectory( hTIFF, nBaseDirOffset );
return 0;
}
TIFFWriteDirectory( hTIFF );
TIFFSetDirectory( hTIFF, (tdir_t) (TIFFNumberOfDirectories(hTIFF)-1) );
nOffset = TIFFCurrentDirOffset( hTIFF );
TIFFSetSubDirectory( hTIFF, nBaseDirOffset );
return nOffset;
}
/*
* Read the next TIFF directory from a file
* and convert it to the internal format.
* We read directories sequentially.
*/
int
TIFFReadDirectory(TIFF* tif)
{
register TIFFDirEntry* dp;
register int n;
register TIFFDirectory* td;
TIFFDirEntry* dir;
int iv;
long v;
double dv;
const TIFFFieldInfo* fip;
int fix;
uint16 dircount;
toff_t nextdiroff;
char* cp;
int diroutoforderwarning = 0;
tif->tif_diroff = tif->tif_nextdiroff;
if (tif->tif_diroff == 0) /* no more directories */
return (0);
/*
* Cleanup any previous compression state.
*/
(*tif->tif_cleanup)(tif);
tif->tif_curdir++;
nextdiroff = 0;
if (!isMapped(tif)) {
if (!SeekOK(tif, tif->tif_diroff)) {
TIFFError(tif->tif_name,
"Seek error accessing TIFF directory");
return (0);
}
if (!ReadOK(tif, &dircount, sizeof (uint16))) {
TIFFError(tif->tif_name,
"Can not read TIFF directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
dir = (TIFFDirEntry *)CheckMalloc(tif,
dircount * sizeof (TIFFDirEntry), "to read TIFF directory");
if (dir == NULL)
return (0);
if (!ReadOK(tif, dir, dircount*sizeof (TIFFDirEntry))) {
TIFFError(tif->tif_name, "Can not read TIFF directory");
goto bad;
}
/*
* Read offset to next directory for sequential scans.
*/
(void) ReadOK(tif, &nextdiroff, sizeof (uint32));
} else {
toff_t off = tif->tif_diroff;
if (off + sizeof (uint16) > tif->tif_size) {
TIFFError(tif->tif_name,
"Can not read TIFF directory 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 directory");
if (dir == NULL)
return (0);
if (off + dircount*sizeof (TIFFDirEntry) > tif->tif_size) {
TIFFError(tif->tif_name, "Can not read TIFF directory");
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);
tif->tif_nextdiroff = nextdiroff;
tif->tif_flags &= ~TIFF_BEENWRITING; /* reset before new dir */
/*
* Setup default value and then make a pass over
* the fields to check type and tag information,
* and to extract info required to size data
* structures. A second pass is made afterwards
* to read in everthing not taken in the first pass.
*/
td = &tif->tif_dir;
/* free any old stuff and reinit */
TIFFFreeDirectory(tif);
TIFFDefaultDirectory(tif);
/*
* Electronic Arts writes gray-scale TIFF files
* without a PlanarConfiguration directory entry.
* Thus we setup a default value here, even though
* the TIFF spec says there is no default value.
*/
TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
/*
* Sigh, we must make a separate pass through the
* directory for the following reason:
*
* We must process the Compression tag in the first pass
* in order to merge in codec-private tag definitions (otherwise
* we may get complaints about unknown tags). However, the
* Compression tag may be dependent on the SamplesPerPixel
* tag value because older TIFF specs permited Compression
* to be written as a SamplesPerPixel-count tag entry.
* Thus if we don't first figure out the correct SamplesPerPixel
* tag value then we may end up ignoring the Compression tag
* value because it has an incorrect count value (if the
* true value of SamplesPerPixel is not 1).
*
* It sure would have been nice if Aldus had really thought
* this stuff through carefully.
*/
for (dp = dir, n = dircount; n > 0; n--, dp++) {
if (tif->tif_flags & TIFF_SWAB) {
TIFFSwabArrayOfShort(&dp->tdir_tag, 2);
TIFFSwabArrayOfLong(&dp->tdir_count, 2);
}
if (dp->tdir_tag == TIFFTAG_SAMPLESPERPIXEL) {
if (!TIFFFetchNormalTag(tif, dp))
goto bad;
dp->tdir_tag = IGNORE;
}
}
/*
* First real pass over the directory.
*/
fix = 0;
for (dp = dir, n = dircount; n > 0; n--, dp++) {
/*
* Find the field information entry for this tag.
* Added check for tags to ignore ... [BFC]
*/
if( TIFFReassignTagToIgnore(TIS_EXTRACT, dp->tdir_tag) )
dp->tdir_tag = IGNORE;
if (dp->tdir_tag == IGNORE)
continue;
/*
* 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 < tif->tif_fieldinfo[fix]->field_tag) {
if (!diroutoforderwarning) {
TIFFWarning(tif->tif_name,
"invalid TIFF directory; tags are not sorted in ascending order");
diroutoforderwarning = 1;
}
fix = 0; /* O(n^2) */
}
while (fix < tif->tif_nfields &&
tif->tif_fieldinfo[fix]->field_tag < dp->tdir_tag)
fix++;
if (fix == tif->tif_nfields ||
tif->tif_fieldinfo[fix]->field_tag != dp->tdir_tag) {
TIFFWarning(tif->tif_name,
"unknown field with tag %d (0x%x) ignored",
dp->tdir_tag, dp->tdir_tag);
dp->tdir_tag = IGNORE;
fix = 0; /* restart search */
continue;
}
/*
* Null out old tags that we ignore.
*/
if (tif->tif_fieldinfo[fix]->field_bit == FIELD_IGNORE) {
ignore:
dp->tdir_tag = IGNORE;
continue;
}
/*
* Check data type.
*/
fip = tif->tif_fieldinfo[fix];
while (dp->tdir_type != (u_short) fip->field_type) {
if (fip->field_type == TIFF_ANY) /* wildcard */
break;
fip++, fix++;
if (fix == tif->tif_nfields ||
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;
}
switch (dp->tdir_tag) {
case TIFFTAG_COMPRESSION:
/*
* The 5.0 spec says the Compression tag has
* one value, while earlier specs say it has
* one value per sample. Because of this, we
* accept the tag if one value is supplied.
*/
if (dp->tdir_count == 1) {
v = TIFFExtractData(tif,
dp->tdir_type, dp->tdir_offset);
if (!TIFFSetField(tif, dp->tdir_tag, (int)v))
goto bad;
break;
}
if (!TIFFFetchPerSampleShorts(tif, dp, &iv) ||
!TIFFSetField(tif, dp->tdir_tag, iv))
goto bad;
dp->tdir_tag = IGNORE;
break;
case TIFFTAG_STRIPOFFSETS:
case TIFFTAG_STRIPBYTECOUNTS:
case TIFFTAG_TILEOFFSETS:
case TIFFTAG_TILEBYTECOUNTS:
TIFFSetFieldBit(tif, fip->field_bit);
break;
case TIFFTAG_IMAGEWIDTH:
case TIFFTAG_IMAGELENGTH:
case TIFFTAG_IMAGEDEPTH:
case TIFFTAG_TILELENGTH:
case TIFFTAG_TILEWIDTH:
case TIFFTAG_TILEDEPTH:
case TIFFTAG_PLANARCONFIG:
case TIFFTAG_ROWSPERSTRIP:
if (!TIFFFetchNormalTag(tif, dp))
goto bad;
dp->tdir_tag = IGNORE;
break;
case TIFFTAG_EXTRASAMPLES:
(void) TIFFFetchExtraSamples(tif, dp);
dp->tdir_tag = IGNORE;
break;
}
}
/*
* Allocate directory structure and setup defaults.
*/
if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) {
MissingRequired(tif, "ImageLength");
goto bad;
}
if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) {
MissingRequired(tif, "PlanarConfiguration");
goto bad;
}
/*
* Setup appropriate structures (by strip or by tile)
*/
if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
td->td_nstrips = TIFFNumberOfStrips(tif);
td->td_tilewidth = td->td_imagewidth;
td->td_tilelength = td->td_rowsperstrip;
td->td_tiledepth = td->td_imagedepth;
tif->tif_flags &= ~TIFF_ISTILED;
} else {
td->td_nstrips = TIFFNumberOfTiles(tif);
tif->tif_flags |= TIFF_ISTILED;
}
td->td_stripsperimage = td->td_nstrips;
if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
td->td_stripsperimage /= td->td_samplesperpixel;
if (!TIFFFieldSet(tif, FIELD_STRIPOFFSETS)) {
MissingRequired(tif,
isTiled(tif) ? "TileOffsets" : "StripOffsets");
goto bad;
}
/*
* Second pass: extract other information.
*/
for (dp = dir, n = dircount; n > 0; n--, dp++) {
if (dp->tdir_tag == IGNORE)
continue;
switch (dp->tdir_tag) {
case TIFFTAG_MINSAMPLEVALUE:
case TIFFTAG_MAXSAMPLEVALUE:
case TIFFTAG_BITSPERSAMPLE:
/*
* The 5.0 spec says the Compression tag has
* one value, while earlier specs say it has
* one value per sample. Because of this, we
* accept the tag if one value is supplied.
*
* The MinSampleValue, MaxSampleValue and
* BitsPerSample tags are supposed to be written
* as one value/sample, but some vendors incorrectly
* write one value only -- so we accept that
* as well (yech).
*/
if (dp->tdir_count == 1) {
v = TIFFExtractData(tif,
dp->tdir_type, dp->tdir_offset);
if (!TIFFSetField(tif, dp->tdir_tag, (int)v))
goto bad;
break;
}
/* fall thru... */
case TIFFTAG_DATATYPE:
case TIFFTAG_SAMPLEFORMAT:
if (!TIFFFetchPerSampleShorts(tif, dp, &iv) ||
!TIFFSetField(tif, dp->tdir_tag, iv))
goto bad;
break;
case TIFFTAG_SMINSAMPLEVALUE:
case TIFFTAG_SMAXSAMPLEVALUE:
if (!TIFFFetchPerSampleAnys(tif, dp, &dv) ||
!TIFFSetField(tif, dp->tdir_tag, dv))
goto bad;
break;
case TIFFTAG_STRIPOFFSETS:
case TIFFTAG_TILEOFFSETS:
if (!TIFFFetchStripThing(tif, dp,
td->td_nstrips, &td->td_stripoffset))
goto bad;
break;
case TIFFTAG_STRIPBYTECOUNTS:
case TIFFTAG_TILEBYTECOUNTS:
if (!TIFFFetchStripThing(tif, dp,
td->td_nstrips, &td->td_stripbytecount))
goto bad;
break;
case TIFFTAG_COLORMAP:
case TIFFTAG_TRANSFERFUNCTION:
/*
* TransferFunction can have either 1x or 3x data
* values; Colormap can have only 3x items.
*/
v = 1L<<td->td_bitspersample;
if (dp->tdir_tag == TIFFTAG_COLORMAP ||
dp->tdir_count != (uint32) v) {
if (!CheckDirCount(tif, dp, (uint32)(3*v)))
break;
}
v *= sizeof (uint16);
cp = CheckMalloc(tif, dp->tdir_count * sizeof (uint16),
"to read \"TransferFunction\" tag");
if (cp != NULL) {
if (TIFFFetchData(tif, dp, cp)) {
/*
* This deals with there being only
* one array to apply to all samples.
*/
uint32 c =
(uint32)1 << td->td_bitspersample;
if (dp->tdir_count == c)
v = 0;
TIFFSetField(tif, dp->tdir_tag,
cp, cp+v, cp+2*v);
}
_TIFFfree(cp);
}
break;
case TIFFTAG_PAGENUMBER:
case TIFFTAG_HALFTONEHINTS:
case TIFFTAG_YCBCRSUBSAMPLING:
case TIFFTAG_DOTRANGE:
(void) TIFFFetchShortPair(tif, dp);
break;
#ifdef COLORIMETRY_SUPPORT
case TIFFTAG_REFERENCEBLACKWHITE:
(void) TIFFFetchRefBlackWhite(tif, dp);
break;
#endif
/* BEGIN REV 4.0 COMPATIBILITY */
case TIFFTAG_OSUBFILETYPE:
v = 0;
switch (TIFFExtractData(tif, dp->tdir_type,
dp->tdir_offset)) {
case OFILETYPE_REDUCEDIMAGE:
v = FILETYPE_REDUCEDIMAGE;
break;
case OFILETYPE_PAGE:
v = FILETYPE_PAGE;
break;
}
if (v)
(void) TIFFSetField(tif,
TIFFTAG_SUBFILETYPE, (int)v);
break;
/* END REV 4.0 COMPATIBILITY */
default:
(void) TIFFFetchNormalTag(tif, dp);
break;
}
}
/*
* Verify Palette image has a Colormap.
*/
if (td->td_photometric == PHOTOMETRIC_PALETTE &&
!TIFFFieldSet(tif, FIELD_COLORMAP)) {
MissingRequired(tif, "Colormap");
goto bad;
}
/*
* Attempt to deal with a missing StripByteCounts tag.
*/
if (!TIFFFieldSet(tif, FIELD_STRIPBYTECOUNTS)) {
/*
* Some manufacturers violate the spec by not giving
* the size of the strips. In this case, assume there
* is one uncompressed strip of data.
*/
if ((td->td_planarconfig == PLANARCONFIG_CONTIG &&
td->td_nstrips > 1) ||
(td->td_planarconfig == PLANARCONFIG_SEPARATE &&
td->td_nstrips != td->td_samplesperpixel)) {
MissingRequired(tif, "StripByteCounts");
goto bad;
}
TIFFWarning(tif->tif_name,
"TIFF directory is missing required \"%s\" field, calculating from imagelength",
_TIFFFieldWithTag(tif,TIFFTAG_STRIPBYTECOUNTS)->field_name);
EstimateStripByteCounts(tif, dir, dircount);
#define BYTECOUNTLOOKSBAD \
((td->td_stripbytecount[0] == 0 && td->td_stripoffset[0] != 0) || \
(td->td_compression == COMPRESSION_NONE && \
td->td_stripbytecount[0] > TIFFGetFileSize(tif) - td->td_stripoffset[0]))
} else if (td->td_nstrips == 1 && BYTECOUNTLOOKSBAD) {
/*
* Plexus (and others) sometimes give a value
* of zero for a tag when they don't know what
* the correct value is! Try and handle the
* simple case of estimating the size of a one
* strip image.
*/
TIFFWarning(tif->tif_name,
"Bogus \"%s\" field, ignoring and calculating from imagelength",
_TIFFFieldWithTag(tif,TIFFTAG_STRIPBYTECOUNTS)->field_name);
EstimateStripByteCounts(tif, dir, dircount);
}
if (dir)
_TIFFfree((char *)dir);
if (!TIFFFieldSet(tif, FIELD_MAXSAMPLEVALUE))
td->td_maxsamplevalue = (uint16)((1L<<td->td_bitspersample)-1);
/*
* Setup default compression scheme.
*/
if (!TIFFFieldSet(tif, FIELD_COMPRESSION))
TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
/*
* Some manufacturers make life difficult by writing
* large amounts of uncompressed data as a single strip.
* This is contrary to the recommendations of the spec.
* The following makes an attempt at breaking such images
* into strips closer to the recommended 8k bytes. A
* side effect, however, is that the RowsPerStrip tag
* value may be changed.
*/
if (td->td_nstrips == 1 && td->td_compression == COMPRESSION_NONE &&
(tif->tif_flags & (TIFF_STRIPCHOP|TIFF_ISTILED)) == TIFF_STRIPCHOP)
ChopUpSingleUncompressedStrip(tif);
/*
* Reinitialize i/o since we are starting on a new directory.
*/
tif->tif_row = (uint32) -1;
tif->tif_curstrip = (tstrip_t) -1;
tif->tif_col = (uint32) -1;
tif->tif_curtile = (ttile_t) -1;
tif->tif_tilesize = TIFFTileSize(tif);
tif->tif_scanlinesize = TIFFScanlineSize(tif);
return (1);
bad:
if (dir)
_TIFFfree(dir);
return (0);
}
CPL_C_END
/************************************************************************/
/* GTIFFWriteDirectory() */
/* */
/* Create a new directory, without any image data for an overview */
/* or a mask */
/* Returns offset of newly created directory, but the */
/* current directory is reset to be the one in used when this */
/* function is called. */
/************************************************************************/
long GTIFFWriteDirectory(TIFF *hTIFF, int nSubfileType, int nXSize, int nYSize,
int nBitsPerPixel, int nPlanarConfig, int nSamples,
int nBlockXSize, int nBlockYSize,
int bTiled, int nCompressFlag, int nPhotometric,
int nSampleFormat,
unsigned short *panRed,
unsigned short *panGreen,
unsigned short *panBlue,
int nExtraSamples,
unsigned short *panExtraSampleValues,
const char *pszMetadata )
{
toff_t nBaseDirOffset;
toff_t nOffset;
nBaseDirOffset = TIFFCurrentDirOffset( hTIFF );
#if defined(TIFFLIB_VERSION) && TIFFLIB_VERSION >= 20051201 /* 3.8.0 */
TIFFFreeDirectory( hTIFF );
#endif
TIFFCreateDirectory( hTIFF );
/* -------------------------------------------------------------------- */
/* Setup TIFF fields. */
/* -------------------------------------------------------------------- */
TIFFSetField( hTIFF, TIFFTAG_IMAGEWIDTH, nXSize );
TIFFSetField( hTIFF, TIFFTAG_IMAGELENGTH, nYSize );
if( nSamples == 1 )
TIFFSetField( hTIFF, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG );
else
TIFFSetField( hTIFF, TIFFTAG_PLANARCONFIG, nPlanarConfig );
TIFFSetField( hTIFF, TIFFTAG_BITSPERSAMPLE, nBitsPerPixel );
TIFFSetField( hTIFF, TIFFTAG_SAMPLESPERPIXEL, nSamples );
TIFFSetField( hTIFF, TIFFTAG_COMPRESSION, nCompressFlag );
TIFFSetField( hTIFF, TIFFTAG_PHOTOMETRIC, nPhotometric );
TIFFSetField( hTIFF, TIFFTAG_SAMPLEFORMAT, nSampleFormat );
if( bTiled )
{
TIFFSetField( hTIFF, TIFFTAG_TILEWIDTH, nBlockXSize );
TIFFSetField( hTIFF, TIFFTAG_TILELENGTH, nBlockYSize );
}
else
TIFFSetField( hTIFF, TIFFTAG_ROWSPERSTRIP, nBlockYSize );
TIFFSetField( hTIFF, TIFFTAG_SUBFILETYPE, nSubfileType );
if (panExtraSampleValues != NULL)
{
TIFFSetField(hTIFF, TIFFTAG_EXTRASAMPLES, nExtraSamples, panExtraSampleValues );
}
/* -------------------------------------------------------------------- */
/* Write color table if one is present. */
/* -------------------------------------------------------------------- */
if( panRed != NULL )
{
TIFFSetField( hTIFF, TIFFTAG_COLORMAP, panRed, panGreen, panBlue );
}
/* -------------------------------------------------------------------- */
/* Write metadata if we have some. */
/* -------------------------------------------------------------------- */
if( pszMetadata && strlen(pszMetadata) > 0 )
TIFFSetField( hTIFF, TIFFTAG_GDAL_METADATA, pszMetadata );
/* -------------------------------------------------------------------- */
/* Write directory, and return byte offset. */
/* -------------------------------------------------------------------- */
if( TIFFWriteCheck( hTIFF, bTiled, "GTIFFWriteDirectory" ) == 0 )
{
TIFFSetSubDirectory( hTIFF, nBaseDirOffset );
return 0;
}
TIFFWriteDirectory( hTIFF );
TIFFSetDirectory( hTIFF, (tdir_t) (TIFFNumberOfDirectories(hTIFF)-1) );
nOffset = TIFFCurrentDirOffset( hTIFF );
TIFFSetSubDirectory( hTIFF, nBaseDirOffset );
return nOffset;
}
toff_t GTIFFWriteDirectory( TIFF *hTIFF, int nSubfileType,
int nXSize, int nYSize,
int nBitsPerPixel, int nPlanarConfig, int nSamples,
int nBlockXSize, int nBlockYSize,
int bTiled, int nCompressFlag, int nPhotometric,
int nSampleFormat,
int nPredictor,
unsigned short *panRed,
unsigned short *panGreen,
unsigned short *panBlue,
int nExtraSamples,
unsigned short *panExtraSampleValues,
const char *pszMetadata,
const char* pszJPEGQuality,
const char* pszJPEGTablesMode,
const char* pszNoData,
CPL_UNUSED const uint32* panLercAddCompressionAndVersion
)
{
const toff_t nBaseDirOffset = TIFFCurrentDirOffset( hTIFF );
// This is a bit of a hack to cause (*tif->tif_cleanup)(tif); to be called.
// See https://trac.osgeo.org/gdal/ticket/2055
TIFFSetField( hTIFF, TIFFTAG_COMPRESSION, COMPRESSION_NONE );
#if defined(TIFFLIB_VERSION) && TIFFLIB_VERSION >= 20051201 // 3.8.0
TIFFFreeDirectory( hTIFF );
#endif
TIFFCreateDirectory( hTIFF );
/* -------------------------------------------------------------------- */
/* Setup TIFF fields. */
/* -------------------------------------------------------------------- */
TIFFSetField( hTIFF, TIFFTAG_IMAGEWIDTH, nXSize );
TIFFSetField( hTIFF, TIFFTAG_IMAGELENGTH, nYSize );
if( nSamples == 1 )
TIFFSetField( hTIFF, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG );
else
TIFFSetField( hTIFF, TIFFTAG_PLANARCONFIG, nPlanarConfig );
TIFFSetField( hTIFF, TIFFTAG_BITSPERSAMPLE, nBitsPerPixel );
TIFFSetField( hTIFF, TIFFTAG_SAMPLESPERPIXEL, nSamples );
TIFFSetField( hTIFF, TIFFTAG_COMPRESSION, nCompressFlag );
TIFFSetField( hTIFF, TIFFTAG_PHOTOMETRIC, nPhotometric );
TIFFSetField( hTIFF, TIFFTAG_SAMPLEFORMAT, nSampleFormat );
if( bTiled )
{
TIFFSetField( hTIFF, TIFFTAG_TILEWIDTH, nBlockXSize );
TIFFSetField( hTIFF, TIFFTAG_TILELENGTH, nBlockYSize );
}
else
{
TIFFSetField( hTIFF, TIFFTAG_ROWSPERSTRIP, nBlockYSize );
}
TIFFSetField( hTIFF, TIFFTAG_SUBFILETYPE, nSubfileType );
if( panExtraSampleValues != nullptr )
{
TIFFSetField( hTIFF, TIFFTAG_EXTRASAMPLES, nExtraSamples,
panExtraSampleValues );
}
if( nCompressFlag == COMPRESSION_LZW ||
nCompressFlag == COMPRESSION_ADOBE_DEFLATE ||
nCompressFlag == COMPRESSION_ZSTD )
TIFFSetField( hTIFF, TIFFTAG_PREDICTOR, nPredictor );
/* -------------------------------------------------------------------- */
/* Write color table if one is present. */
/* -------------------------------------------------------------------- */
if( panRed != nullptr )
{
TIFFSetField( hTIFF, TIFFTAG_COLORMAP, panRed, panGreen, panBlue );
}
/* -------------------------------------------------------------------- */
/* Write metadata if we have some. */
/* -------------------------------------------------------------------- */
if( pszMetadata && strlen(pszMetadata) > 0 )
TIFFSetField( hTIFF, TIFFTAG_GDAL_METADATA, pszMetadata );
/* -------------------------------------------------------------------- */
/* Write JPEG tables if needed. */
/* -------------------------------------------------------------------- */
if( nCompressFlag == COMPRESSION_JPEG )
{
GTiffWriteJPEGTables( hTIFF,
(nPhotometric == PHOTOMETRIC_RGB) ? "RGB" :
(nPhotometric == PHOTOMETRIC_YCBCR) ? "YCBCR" :
"MINISBLACK",
pszJPEGQuality,
pszJPEGTablesMode );
if( nPhotometric == PHOTOMETRIC_YCBCR )
{
// Explicitly register the subsampling so that JPEGFixupTags
// is a no-op (helps for cloud optimized geotiffs)
TIFFSetField( hTIFF, TIFFTAG_YCBCRSUBSAMPLING, 2, 2 );
}
}
#ifdef HAVE_LERC
if( nCompressFlag == COMPRESSION_LERC && panLercAddCompressionAndVersion )
{
TIFFSetField(hTIFF, TIFFTAG_LERC_PARAMETERS, 2,
panLercAddCompressionAndVersion);
}
#endif
/* -------------------------------------------------------------------- */
/* Write no data value if we have one. */
/* -------------------------------------------------------------------- */
if( pszNoData != nullptr )
{
TIFFSetField( hTIFF, TIFFTAG_GDAL_NODATA, pszNoData );
}
/* -------------------------------------------------------------------- */
/* Write directory, and return byte offset. */
/* -------------------------------------------------------------------- */
if( TIFFWriteCheck( hTIFF, bTiled, "GTIFFWriteDirectory" ) == 0 )
{
TIFFSetSubDirectory( hTIFF, nBaseDirOffset );
return 0;
}
TIFFWriteDirectory( hTIFF );
TIFFSetDirectory( hTIFF,
static_cast<tdir_t>(TIFFNumberOfDirectories(hTIFF) - 1) );
const toff_t nOffset = TIFFCurrentDirOffset( hTIFF );
TIFFSetSubDirectory( hTIFF, nBaseDirOffset );
return nOffset;
}
void
TIFFCleanup(TIFF* tif)
{
/*
* Flush buffered data and directory (if dirty).
*/
if (tif->tif_mode != O_RDONLY)
TIFFFlush(tif);
(*tif->tif_cleanup)(tif);
TIFFFreeDirectory(tif);
if (tif->tif_dirlist)
_TIFFfree(tif->tif_dirlist);
/*
* Clean up client info links.
*/
while( tif->tif_clientinfo )
{
TIFFClientInfoLink *psLink = tif->tif_clientinfo;
tif->tif_clientinfo = psLink->next;
_TIFFfree( psLink->name );
_TIFFfree( psLink );
}
if (tif->tif_rawdata && (tif->tif_flags&TIFF_MYBUFFER))
_TIFFfree(tif->tif_rawdata);
if (isMapped(tif))
TIFFUnmapFileContents(tif, tif->tif_base, (toff_t)tif->tif_size);
/*
* Clean up custom fields.
*/
if (tif->tif_fields && tif->tif_nfields > 0) {
uint32 i;
for (i = 0; i < tif->tif_nfields; i++) {
TIFFField *fld = tif->tif_fields[i];
if (fld->field_bit == FIELD_CUSTOM &&
strncmp("Tag ", fld->field_name, 4) == 0) {
_TIFFfree(fld->field_name);
_TIFFfree(fld);
}
}
_TIFFfree(tif->tif_fields);
}
if (tif->tif_nfieldscompat > 0) {
uint32 i;
for (i = 0; i < tif->tif_nfieldscompat; i++) {
if (tif->tif_fieldscompat[i].allocated_size)
_TIFFfree(tif->tif_fieldscompat[i].fields);
}
_TIFFfree(tif->tif_fieldscompat);
}
_TIFFfree(tif);
}
int
main()
{
TIFF *tif;
unsigned char buf[SPP] = { 0, 127, 255 };
uint64 dir_offset = 0, dir_offset2 = 0;
uint64 read_dir_offset = 0, read_dir_offset2 = 0;
uint64 *dir_offset2_ptr = NULL;
char *ascii_value;
uint16 count16 = 0;
/* We write the main directory as a simple image. */
tif = TIFFOpen(filename, "w+");
if (!tif) {
fprintf (stderr, "Can't create test TIFF file %s.\n", filename);
return 1;
}
if (!TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width)) {
fprintf (stderr, "Can't set ImageWidth tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_IMAGELENGTH, length)) {
fprintf (stderr, "Can't set ImageLength tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps)) {
fprintf (stderr, "Can't set BitsPerSample tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, SPP)) {
fprintf (stderr, "Can't set SamplesPerPixel tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rows_per_strip)) {
fprintf (stderr, "Can't set SamplesPerPixel tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_PLANARCONFIG, planarconfig)) {
fprintf (stderr, "Can't set PlanarConfiguration tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, photometric)) {
fprintf (stderr, "Can't set PhotometricInterpretation tag.\n");
goto failure;
}
/* Write dummy pixel data. */
if (TIFFWriteScanline(tif, buf, 0, 0) == -1) {
fprintf (stderr, "Can't write image data.\n");
goto failure;
}
if (!TIFFWriteDirectory( tif )) {
fprintf (stderr, "TIFFWriteDirectory() failed.\n");
goto failure;
}
/*
* Now create an EXIF directory.
*/
if (TIFFCreateEXIFDirectory(tif) != 0) {
fprintf (stderr, "TIFFCreateEXIFDirectory() failed.\n" );
goto failure;
}
if (!TIFFSetField( tif, EXIFTAG_SPECTRALSENSITIVITY, "EXIF Spectral Sensitivity")) {
fprintf (stderr, "Can't write SPECTRALSENSITIVITY\n" );
goto failure;
}
if (!TIFFWriteCustomDirectory( tif, &dir_offset )) {
fprintf (stderr, "TIFFWriteCustomDirectory() with EXIF failed.\n");
goto failure;
}
/*
* Now create a custom directory with tags that conflict with mainline
* TIFF tags.
*/
TIFFFreeDirectory( tif );
if (TIFFCreateCustomDirectory(tif, &customFieldArray) != 0) {
fprintf (stderr, "TIFFCreateEXIFDirectory() failed.\n" );
goto failure;
}
if (!TIFFSetField( tif, TIFFTAG_IMAGEWIDTH, "*Custom1")) { /* not really IMAGEWIDTH */
fprintf (stderr, "Can't write pseudo-IMAGEWIDTH.\n" );
goto failure;
}
if (!TIFFSetField( tif, TIFFTAG_DOTRANGE, "*Custom2")) { /* not really DOTWIDTH */
fprintf (stderr, "Can't write pseudo-DOTWIDTH.\n" );
goto failure;
}
if (!TIFFWriteCustomDirectory( tif, &dir_offset2 )) {
fprintf (stderr, "TIFFWriteCustomDirectory() with EXIF failed.\n");
goto failure;
}
/*
* Go back to the first directory, and add the EXIFIFD pointer.
*/
TIFFSetDirectory(tif, 0);
TIFFSetField(tif, TIFFTAG_EXIFIFD, dir_offset );
TIFFSetField(tif, TIFFTAG_SUBIFD, 1, &dir_offset2 );
TIFFClose(tif);
/* Ok, now test whether we can read written values in the EXIF directory. */
tif = TIFFOpen(filename, "r");
TIFFGetField(tif, TIFFTAG_EXIFIFD, &read_dir_offset );
if( read_dir_offset != dir_offset ) {
fprintf (stderr, "Did not get expected EXIFIFD.\n" );
goto failure;
}
TIFFGetField(tif, TIFFTAG_SUBIFD, &count16, &dir_offset2_ptr );
read_dir_offset2 = dir_offset2_ptr[0];
if( read_dir_offset2 != dir_offset2 || count16 != 1) {
fprintf (stderr, "Did not get expected SUBIFD.\n" );
goto failure;
}
if( !TIFFReadEXIFDirectory(tif, read_dir_offset) ) {
fprintf (stderr, "TIFFReadEXIFDirectory() failed.\n" );
goto failure;
}
if (!TIFFGetField( tif, EXIFTAG_SPECTRALSENSITIVITY, &ascii_value) ) {
fprintf (stderr, "reading SPECTRALSENSITIVITY failed.\n" );
goto failure;
}
if( strcmp(ascii_value,"EXIF Spectral Sensitivity") != 0) {
fprintf (stderr, "got wrong SPECTRALSENSITIVITY value.\n" );
goto failure;
}
/* Try reading the Custom directory */
if( !TIFFReadCustomDirectory(tif, read_dir_offset2, &customFieldArray) ) {
fprintf (stderr, "TIFFReadCustomDirectory() failed.\n" );
goto failure;
}
if (!TIFFGetField( tif, TIFFTAG_IMAGEWIDTH, &ascii_value) ) {
fprintf (stderr, "reading pseudo-IMAGEWIDTH failed.\n" );
goto failure;
}
if( strcmp(ascii_value,"*Custom1") != 0) {
fprintf (stderr, "got wrong pseudo-IMAGEWIDTH value.\n" );
goto failure;
}
if (!TIFFGetField( tif, TIFFTAG_DOTRANGE, &ascii_value) ) {
fprintf (stderr, "reading pseudo-DOTRANGE failed.\n" );
goto failure;
}
if( strcmp(ascii_value,"*Custom2") != 0) {
fprintf (stderr, "got wrong pseudo-DOTRANGE value.\n" );
goto failure;
}
TIFFClose(tif);
/* All tests passed; delete file and exit with success status. */
unlink(filename);
return 0;
failure:
/*
* Something goes wrong; close file and return unsuccessful status.
* Do not remove the file for further manual investigation.
*/
TIFFClose(tif);
return 1;
}
/*
* Write the contents of the current directory
* to the specified file. This routine doesn't
* handle overwriting a directory with auxiliary
* storage that's been changed.
*/
static int
_TIFFWriteDirectory(TIFF* tif, int done)
{
uint64 dircount; /* 16-bit or 64-bit directory entry count */
toff_t diroff; /* 32-bit or 64-bit directory offset */
ttag_t tag;
uint32 nfields;
tsize_t dirsize;
char* data;
TIFFDirEntry* dir;
TIFFDirectory* td;
unsigned long b, fields[FIELD_SETLONGS];
int fi, nfi;
if (tif->tif_mode == O_RDONLY)
return (1);
/*
* Clear write state so that subsequent images with
* different characteristics get the right buffers
* setup for them.
*/
if (done)
{
if (tif->tif_flags & TIFF_POSTENCODE) {
tif->tif_flags &= ~TIFF_POSTENCODE;
if (!(*tif->tif_postencode)(tif)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error post-encoding before directory write");
return (0);
}
}
(*tif->tif_close)(tif); /* shutdown encoder */
/*
* Flush any data that might have been written
* by the compression close+cleanup routines.
*/
if (tif->tif_rawcc > 0 && !TIFFFlushData1(tif)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error flushing data before directory write");
return (0);
}
if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
_TIFFfree(tif->tif_rawdata);
tif->tif_rawdata = NULL;
tif->tif_rawcc = 0;
tif->tif_rawdatasize = 0;
}
tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP);
}
/*
* Loop to allow retry in case transition to BigTIFF required
*/
while (1) {
/*
* Directory hasn't been placed yet, put
* it at the end of the file and link it
* into the existing directory structure.
*/
if (tif->tif_diroff == 0 && !TIFFLinkDirectory(tif))
goto bad2;
td = &tif->tif_dir;
/*
* Size the directory so that we can calculate
* offsets for the data items that aren't kept
* in-place in each field.
*/
nfields = 0;
for (b = 0; b <= FIELD_LAST; b++)
if (TIFFFieldSet(tif, b) && b != FIELD_CUSTOM)
nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
nfields += td->td_customValueCount;
dirsize = nfields * TDIREntryLen(tif);
data = (char*) _TIFFmalloc(dirsize);
if (data == NULL) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Cannot write directory, out of space");
goto bad2;
}
_TIFFmemset(data, 0, dirsize);
/*
* Setup external form of directory
* entries and write data items.
*/
_TIFFmemcpy(fields, td->td_fieldsset, sizeof (fields));
/*
* Write out ExtraSamples tag only if
* extra samples are present in the data.
*/
if (FieldSet(fields, FIELD_EXTRASAMPLES) && !td->td_extrasamples) {
ResetFieldBit(fields, FIELD_EXTRASAMPLES);
nfields--;
dirsize -= TDIREntryLen(tif);
} /*XXX*/
tif->tif_dataoff = tif->tif_diroff + TIFFDirCntLen(tif) + dirsize + TIFFDirOffLen(tif);
(void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
dir = (TIFFDirEntry*) data;
for (fi = 0, nfi = tif->tif_nfields; nfi > 0; nfi--, fi++) {
const TIFFFieldInfo* fip = tif->tif_fieldinfo[fi];
/*
** For custom fields, we test to see if the custom field
** is set or not. For normal fields, we just use the
** FieldSet test.
*/
if( fip->field_bit == FIELD_CUSTOM )
{
int ci, is_set = FALSE;
for( ci = 0; ci < td->td_customValueCount; ci++ )
is_set |= (td->td_customValues[ci].info == fip);
if( !is_set )
continue;
}
else if (!FieldSet(fields, fip->field_bit))
continue;
/*
** Handle other fields.
*/
switch (fip->field_bit)
{
case FIELD_STRIPOFFSETS:
/*
* We use one field bit for both strip and tile
* offsets, and so must be careful in selecting
* the appropriate field descriptor (so that tags
* are written in sorted order).
*/
tag = (isTiled(tif) ? TIFFTAG_TILEOFFSETS : TIFFTAG_STRIPOFFSETS);
if (tag != fip->field_tag)
continue;
dir->s.tdir_tag = (uint16) tag;
TDIRSetEntryCount(tif,dir, (uint32) td->td_nstrips);
/*
* If file is BigTIFF strip/tile offsets are written as 64-bit,
* else convert to array of 32-bit offsets.
*/
if (isBigTIFF(tif)) {
dir->s.tdir_type = (uint16) TIFF_LONG8;
if (!TIFFWriteLong8Array(tif, dir, td->td_stripoffset))
goto bad;
} else {
uint32 tdi;
int status;
uint32 *soff = _TIFFCheckMalloc(tif, td->td_nstrips,
sizeof(uint32), "32-bit offset array");
dir->s.tdir_type = (uint16) TIFF_LONG;
for (tdi = 0; tdi < td->td_nstrips; tdi++)
soff[tdi] = (uint32) td->td_stripoffset[tdi];
status = TIFFWriteLongArray(tif, dir, soff);
_TIFFfree(soff);
if (!status)
goto bad;
}
break;
case FIELD_STRIPBYTECOUNTS:
/*
* We use one field bit for both strip and tile
* byte counts, and so must be careful in selecting
* the appropriate field descriptor (so that tags
* are written in sorted order).
*/
tag = (isTiled(tif) ? TIFFTAG_TILEBYTECOUNTS : TIFFTAG_STRIPBYTECOUNTS);
if (tag != fip->field_tag)
continue;
dir->s.tdir_tag = (uint16) tag;
dir->s.tdir_type = (uint16) TIFF_LONG;
TDIRSetEntryCount(tif,dir, (uint32) td->td_nstrips);
if (!TIFFWriteLongArray(tif, dir, td->td_stripbytecount))
goto bad;
break;
case FIELD_ROWSPERSTRIP:
TIFFSetupShortLong(tif, TIFFTAG_ROWSPERSTRIP,
dir, td->td_rowsperstrip);
break;
case FIELD_COLORMAP:
if (!TIFFWriteShortTable(tif, TIFFTAG_COLORMAP, dir,
3, td->td_colormap))
goto bad;
break;
case FIELD_IMAGEDIMENSIONS:
TIFFSetupShortLong(tif, TIFFTAG_IMAGEWIDTH,
dir, td->td_imagewidth);
TDIREntryNext(tif,dir);
TIFFSetupShortLong(tif, TIFFTAG_IMAGELENGTH,
dir, td->td_imagelength);
break;
case FIELD_TILEDIMENSIONS:
TIFFSetupShortLong(tif, TIFFTAG_TILEWIDTH,
dir, td->td_tilewidth);
TDIREntryNext(tif,dir);
TIFFSetupShortLong(tif, TIFFTAG_TILELENGTH,
dir, td->td_tilelength);
break;
case FIELD_COMPRESSION:
TIFFSetupShort(tif, TIFFTAG_COMPRESSION,
dir, td->td_compression);
break;
case FIELD_PHOTOMETRIC:
TIFFSetupShort(tif, TIFFTAG_PHOTOMETRIC,
dir, td->td_photometric);
break;
case FIELD_POSITION:
WriteRationalPair(TIFF_RATIONAL,
TIFFTAG_XPOSITION, td->td_xposition,
TIFFTAG_YPOSITION, td->td_yposition);
break;
case FIELD_RESOLUTION:
WriteRationalPair(TIFF_RATIONAL,
TIFFTAG_XRESOLUTION, td->td_xresolution,
TIFFTAG_YRESOLUTION, td->td_yresolution);
break;
case FIELD_BITSPERSAMPLE:
case FIELD_MINSAMPLEVALUE:
case FIELD_MAXSAMPLEVALUE:
case FIELD_SAMPLEFORMAT:
if (!TIFFWritePerSampleShorts(tif, fip->field_tag, dir))
goto bad;
break;
case FIELD_SMINSAMPLEVALUE:
case FIELD_SMAXSAMPLEVALUE:
if (!TIFFWritePerSampleAnys(tif,
_TIFFSampleToTagType(tif), fip->field_tag, dir))
goto bad;
break;
case FIELD_PAGENUMBER:
case FIELD_HALFTONEHINTS:
case FIELD_YCBCRSUBSAMPLING:
if (!TIFFSetupShortPair(tif, fip->field_tag, dir))
goto bad;
break;
case FIELD_INKNAMES:
if (!TIFFWriteInkNames(tif, dir))
goto bad;
break;
case FIELD_TRANSFERFUNCTION:
if (!TIFFWriteTransferFunction(tif, dir))
goto bad;
break;
case FIELD_SUBIFD:
/*
* Total hack: if this directory includes a SubIFD
* tag then force the next <n> directories to be
* written as ``sub directories'' of this one. This
* is used to write things like thumbnails and
* image masks that one wants to keep out of the
* normal directory linkage access mechanism.
*
* If file is BigTIFF subdirectory offsets are written as 64-bit,
* else as array of 32-bit offsets. At this point the actual
* offset values are unknown (will be set in TIFFLinkDirectory).
*/
dir->s.tdir_tag = (uint16) fip->field_tag;
TDIRSetEntryCount(tif,dir, (uint32) td->td_nsubifd);
TDIRSetEntryOff(tif,dir, 0);
if (td->td_nsubifd > 0) {
tif->tif_flags |= TIFF_INSUBIFD;
if (isBigTIFF(tif)) {
toff_t *doff = _TIFFCheckMalloc(tif, td->td_nsubifd, sizeof(toff_t),
"Allocate SubIFD offset array");
if (!doff)
goto bad;
_TIFFmemset(doff, 0, td->td_nsubifd * sizeof(toff_t));
dir->b.tdir_type = TIFF_IFD8;
if (td->td_nsubifd > TIFFDirOffLen(tif) / sizeof(toff_t))
tif->tif_subifdoff = tif->tif_dataoff;
else
tif->tif_subifdoff = tif->tif_diroff + TIFFDirCntLen(tif) +
(char*) &dir->b.tdir_offset - data;
if (!TIFFWriteLong8Array(tif, dir, (toff_t*) doff))
goto bad;
_TIFFfree(doff);
} else {
uint32 *doff = _TIFFCheckMalloc(tif, td->td_nsubifd, sizeof(uint32),
"Allocate SubIFD offset array");
if (!doff)
goto bad;
_TIFFmemset(doff, 0, td->td_nsubifd * sizeof(uint32));
dir->b.tdir_type = TIFF_LONG;
if (td->td_nsubifd > TIFFDirOffLen(tif) / sizeof(uint32))
tif->tif_subifdoff = tif->tif_dataoff;
else
tif->tif_subifdoff = tif->tif_diroff + TIFFDirCntLen(tif) +
(char*) &dir->s.tdir_offset - data;
if (!TIFFWriteLongArray(tif, dir, doff))
goto bad;
_TIFFfree(doff);
}
}
break;
default:
/* XXX: Should be fixed and removed. */
if (fip->field_tag == TIFFTAG_DOTRANGE) {
if (!TIFFSetupShortPair(tif, fip->field_tag, dir))
goto bad;
}
else if (!TIFFWriteNormalTag(tif, dir, fip))
goto bad;
break;
}
TDIREntryNext(tif,dir);
if( fip->field_bit != FIELD_CUSTOM )
ResetFieldBit(fields, fip->field_bit);
}
/*
* Check if BigTIFF now required based on data location. If so reset
* data offset to overwrite already-written data for directory, then
* convert file to BigTIFF and loop to recreate directory.
*/
if (isBigTIFF(tif) || !isBigOff(tif->tif_dataoff + sizeof(uint32)))
break;
_TIFFfree(data);
tif->tif_dataoff = tif->tif_diroff;
if (!TIFFMakeBigTIFF(tif))
goto bad2;
tif->tif_diroff = 0;
} /* bottom of BigTIFF retry loop */
/*
* Write directory.
*/
tif->tif_curdir++;
TIFFSetDirCnt(tif,dircount, (uint32) nfields);
TIFFSetDirOff(tif,diroff,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.
*/
uint32 di;
for (dir = (TIFFDirEntry*) data, di = 0; di < nfields; TDIREntryNext(tif,dir), di++) {
TIFFSwabShort(&dir->s.tdir_tag);
TIFFSwabShort(&dir->s.tdir_type);
TDIRSwabEntryCount(tif,dir);
TDIRSwabEntryOff(tif,dir);
}
TIFFSwabDirCnt(tif,&dircount);
TIFFSwabDirOff(tif,&diroff);
}
(void) TIFFSeekFile(tif, tif->tif_diroff, SEEK_SET);
if (!WriteOK(tif, &dircount, TIFFDirCntLen(tif))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory count (%d)", TIFFGetErrno(tif));
goto bad;
}
if (!WriteOK(tif, data, dirsize)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory contents (%d)", TIFFGetErrno(tif));
goto bad;
}
if (!WriteOK(tif, &diroff, TIFFDirOffLen(tif))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory link (%d)", TIFFGetErrno(tif));
goto bad;
}
if (done) {
TIFFFreeDirectory(tif);
tif->tif_flags &= ~TIFF_DIRTYDIRECT;
(*tif->tif_cleanup)(tif);
/*
* Reset directory-related state for subsequent
* directories.
*/
TIFFCreateDirectory(tif);
}
_TIFFfree(data);
return (1);
bad:
_TIFFfree(data);
bad2:
return (0);
}
