/*
* 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;
uint32 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.
*/
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_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);
}
static int
_TIFFWriteCustomDirectory(TIFF* tif, toff_t *pdiroff)
{
uint16 dircount;
uint32 nfields;
tsize_t dirsize;
char* data;
TIFFDirEntry* dir;
TIFFDirectory* td;
unsigned long b, fields[FIELD_SETLONGS];
int fi, nfi;
if (tif->tif_mode == O_RDONLY)
return (1);
td = &tif->tif_dir;
/*
* Size the directory so that we can calculate
* offsets for the data items that aren't kept
* in-place in each field.
*/
nfields = 0;
for (b = 0; b <= FIELD_LAST; b++)
if (TIFFFieldSet(tif, b) && b != FIELD_CUSTOM)
nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
nfields += td->td_customValueCount;
dirsize = nfields * sizeof (TIFFDirEntry);
data = (char*) _TIFFmalloc(dirsize);
if (data == NULL) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Cannot write directory, out of space");
return (0);
}
/*
* Put the directory at the end of the file.
*/
tif->tif_diroff = (TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1;
tif->tif_dataoff = (toff_t)(
tif->tif_diroff + sizeof (uint16) + dirsize + sizeof (toff_t));
if (tif->tif_dataoff & 1)
tif->tif_dataoff++;
(void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
dir = (TIFFDirEntry*) data;
/*
* Setup external form of directory
* entries and write data items.
*/
_TIFFmemcpy(fields, td->td_fieldsset, sizeof (fields));
for (fi = 0, nfi = tif->tif_nfields; nfi > 0; nfi--, fi++) {
const TIFFFieldInfo* fip = tif->tif_fieldinfo[fi];
/*
* For custom fields, we test to see if the custom field
* is set or not. For normal fields, we just use the
* FieldSet test.
*/
if( fip->field_bit == FIELD_CUSTOM )
{
int ci, is_set = FALSE;
for( ci = 0; ci < td->td_customValueCount; ci++ )
is_set |= (td->td_customValues[ci].info == fip);
if( !is_set )
continue;
}
else if (!FieldSet(fields, fip->field_bit))
continue;
if( fip->field_bit != FIELD_CUSTOM )
ResetFieldBit(fields, fip->field_bit);
}
/*
* Write directory.
*/
dircount = (uint16) nfields;
*pdiroff = (uint32) tif->tif_nextdiroff;
if (tif->tif_flags & TIFF_SWAB) {
/*
* The file's byte order is opposite to the
* native machine architecture. We overwrite
* the directory information with impunity
* because it'll be released below after we
* write it to the file. Note that all the
* other tag construction routines assume that
* we do this byte-swapping; i.e. they only
* byte-swap indirect data.
*/
for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) {
TIFFSwabArrayOfShort(&dir->tdir_tag, 2);
TIFFSwabArrayOfLong(&dir->tdir_count, 2);
}
dircount = (uint16) nfields;
TIFFSwabShort(&dircount);
TIFFSwabLong(pdiroff);
}
(void) TIFFSeekFile(tif, tif->tif_diroff, SEEK_SET);
if (!WriteOK(tif, &dircount, sizeof (dircount))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory count");
goto bad;
}
if (!WriteOK(tif, data, dirsize)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory contents");
goto bad;
}
if (!WriteOK(tif, pdiroff, sizeof (uint32))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory link");
goto bad;
}
_TIFFfree(data);
return (1);
bad:
_TIFFfree(data);
return (0);
}
/*
* Write the contents of the current directory
* to the specified file. This routine doesn't
* handle overwriting a directory with auxiliary
* storage that's been changed.
*/
static int
_TIFFWriteDirectory(TIFF* tif, int done)
{
uint16 dircount;
toff_t diroff;
ttag_t tag;
uint32 nfields;
tsize_t dirsize;
char* data;
TIFFDirEntry* dir;
TIFFDirectory* td;
unsigned long b, fields[FIELD_SETLONGS];
int fi, nfi;
if (tif->tif_mode == O_RDONLY)
return (1);
/*
* Clear write state so that subsequent images with
* different characteristics get the right buffers
* setup for them.
*/
if (done)
{
if (tif->tif_flags & TIFF_POSTENCODE) {
tif->tif_flags &= ~TIFF_POSTENCODE;
if (!(*tif->tif_postencode)(tif)) {
TIFFErrorExt(tif->tif_clientdata,
tif->tif_name,
"Error post-encoding before directory write");
return (0);
}
}
(*tif->tif_close)(tif); /* shutdown encoder */
/*
* Flush any data that might have been written
* by the compression close+cleanup routines.
*/
if (tif->tif_rawcc > 0
&& (tif->tif_flags & TIFF_BEENWRITING) != 0
&& !TIFFFlushData1(tif)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error flushing data before directory write");
return (0);
}
if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
_TIFFfree(tif->tif_rawdata);
tif->tif_rawdata = NULL;
tif->tif_rawcc = 0;
tif->tif_rawdatasize = 0;
}
tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP);
}
td = &tif->tif_dir;
/*
* Size the directory so that we can calculate
* offsets for the data items that aren't kept
* in-place in each field.
*/
nfields = 0;
for (b = 0; b <= FIELD_LAST; b++)
if (TIFFFieldSet(tif, b) && b != FIELD_CUSTOM)
nfields += (b < FIELD_SUBFILETYPE ? 2 : 1);
nfields += td->td_customValueCount;
dirsize = nfields * sizeof (TIFFDirEntry);
data = (char*) _TIFFmalloc(dirsize);
if (data == NULL) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Cannot write directory, out of space");
return (0);
}
/*
* Directory hasn't been placed yet, put
* it at the end of the file and link it
* into the existing directory structure.
*/
if (tif->tif_diroff == 0 && !TIFFLinkDirectory(tif))
goto bad;
tif->tif_dataoff = (toff_t)(
tif->tif_diroff + sizeof (uint16) + dirsize + sizeof (toff_t));
if (tif->tif_dataoff & 1)
tif->tif_dataoff++;
(void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
tif->tif_curdir++;
dir = (TIFFDirEntry*) data;
/*
* Setup external form of directory
* entries and write data items.
*/
_TIFFmemcpy(fields, td->td_fieldsset, sizeof (fields));
/*
* Write out ExtraSamples tag only if
* extra samples are present in the data.
*/
if (FieldSet(fields, FIELD_EXTRASAMPLES) && !td->td_extrasamples) {
ResetFieldBit(fields, FIELD_EXTRASAMPLES);
nfields--;
dirsize -= sizeof (TIFFDirEntry);
} /*XXX*/
for (fi = 0, nfi = tif->tif_nfields; nfi > 0; nfi--, fi++) {
const TIFFFieldInfo* fip = tif->tif_fieldinfo[fi];
/*
* For custom fields, we test to see if the custom field
* is set or not. For normal fields, we just use the
* FieldSet test.
*/
if( fip->field_bit == FIELD_CUSTOM )
{
int ci, is_set = FALSE;
for( ci = 0; ci < td->td_customValueCount; ci++ )
is_set |= (td->td_customValues[ci].info == fip);
if( !is_set )
continue;
}
else if (!FieldSet(fields, fip->field_bit))
continue;
/*
* Handle other fields.
*/
switch (fip->field_bit)
{
case FIELD_STRIPOFFSETS:
/*
* We use one field bit for both strip and tile
* offsets, and so must be careful in selecting
* the appropriate field descriptor (so that tags
* are written in sorted order).
*/
tag = isTiled(tif) ?
TIFFTAG_TILEOFFSETS : TIFFTAG_STRIPOFFSETS;
if (tag != fip->field_tag)
continue;
dir->tdir_tag = (uint16) tag;
dir->tdir_type = (uint16) TIFF_LONG;
dir->tdir_count = (uint32) td->td_nstrips;
if (!TIFFWriteLongArray(tif, dir, td->td_stripoffset))
goto bad;
break;
case FIELD_STRIPBYTECOUNTS:
/*
* We use one field bit for both strip and tile
* byte counts, and so must be careful in selecting
* the appropriate field descriptor (so that tags
* are written in sorted order).
*/
tag = isTiled(tif) ?
TIFFTAG_TILEBYTECOUNTS : TIFFTAG_STRIPBYTECOUNTS;
if (tag != fip->field_tag)
continue;
dir->tdir_tag = (uint16) tag;
dir->tdir_type = (uint16) TIFF_LONG;
dir->tdir_count = (uint32) td->td_nstrips;
if (!TIFFWriteLongArray(tif, dir, td->td_stripbytecount))
goto bad;
break;
case FIELD_ROWSPERSTRIP:
TIFFSetupShortLong(tif, TIFFTAG_ROWSPERSTRIP,
dir, td->td_rowsperstrip);
break;
case FIELD_COLORMAP:
if (!TIFFWriteShortTable(tif, TIFFTAG_COLORMAP, dir,
3, td->td_colormap))
goto bad;
break;
case FIELD_IMAGEDIMENSIONS:
TIFFSetupShortLong(tif, TIFFTAG_IMAGEWIDTH,
dir++, td->td_imagewidth);
TIFFSetupShortLong(tif, TIFFTAG_IMAGELENGTH,
dir, td->td_imagelength);
break;
case FIELD_TILEDIMENSIONS:
TIFFSetupShortLong(tif, TIFFTAG_TILEWIDTH,
dir++, td->td_tilewidth);
TIFFSetupShortLong(tif, TIFFTAG_TILELENGTH,
dir, td->td_tilelength);
break;
case FIELD_COMPRESSION:
TIFFSetupShort(tif, TIFFTAG_COMPRESSION,
dir, td->td_compression);
break;
case FIELD_PHOTOMETRIC:
TIFFSetupShort(tif, TIFFTAG_PHOTOMETRIC,
dir, td->td_photometric);
break;
case FIELD_POSITION:
WriteRationalPair(TIFF_RATIONAL,
TIFFTAG_XPOSITION, td->td_xposition,
TIFFTAG_YPOSITION, td->td_yposition);
break;
case FIELD_RESOLUTION:
WriteRationalPair(TIFF_RATIONAL,
TIFFTAG_XRESOLUTION, td->td_xresolution,
TIFFTAG_YRESOLUTION, td->td_yresolution);
break;
case FIELD_BITSPERSAMPLE:
case FIELD_MINSAMPLEVALUE:
case FIELD_MAXSAMPLEVALUE:
case FIELD_SAMPLEFORMAT:
if (!TIFFWritePerSampleShorts(tif, fip->field_tag, dir))
goto bad;
break;
case FIELD_SMINSAMPLEVALUE:
case FIELD_SMAXSAMPLEVALUE:
if (!TIFFWritePerSampleAnys(tif,
_TIFFSampleToTagType(tif), fip->field_tag, dir))
goto bad;
break;
case FIELD_INKNAMES:
if (!TIFFWriteInkNames(tif, dir))
goto bad;
break;
case FIELD_TRANSFERFUNCTION:
if (!TIFFWriteTransferFunction(tif, dir))
goto bad;
break;
case FIELD_SUBIFD:
/*
* XXX: Always write this field using LONG type
* for backward compatibility.
*/
dir->tdir_tag = (uint16) fip->field_tag;
dir->tdir_type = (uint16) TIFF_LONG;
dir->tdir_count = (uint32) td->td_nsubifd;
if (!TIFFWriteLongArray(tif, dir, td->td_subifd))
goto bad;
/*
* Total hack: if this directory includes a SubIFD
* tag then force the next <n> directories to be
* written as ``sub directories'' of this one. This
* is used to write things like thumbnails and
* image masks that one wants to keep out of the
* normal directory linkage access mechanism.
*/
if (dir->tdir_count > 0) {
tif->tif_flags |= TIFF_INSUBIFD;
tif->tif_nsubifd = (uint16) dir->tdir_count;
if (dir->tdir_count > 1)
tif->tif_subifdoff = dir->tdir_offset;
else
tif->tif_subifdoff = (uint32)(
tif->tif_diroff
+ sizeof (uint16)
+ ((char*)&dir->tdir_offset-data));
}
break;
default:
/*
* XXX: Should be fixed and removed. See comments
* related to these tags in tif_dir.c.
*/
if (fip->field_tag == TIFFTAG_PAGENUMBER
|| fip->field_tag == TIFFTAG_HALFTONEHINTS
|| fip->field_tag == TIFFTAG_YCBCRSUBSAMPLING
|| fip->field_tag == TIFFTAG_DOTRANGE) {
if (fip->field_type == TIFF_BYTE) {
if (!TIFFSetupBytePair(tif, fip->field_tag, dir))
goto bad;
} else if (fip->field_type == TIFF_SHORT) {
if (!TIFFSetupShortPair(tif, fip->field_tag, dir))
goto bad;
}
} else if (!TIFFWriteNormalTag(tif, dir, fip))
goto bad;
break;
}
dir++;
if( fip->field_bit != FIELD_CUSTOM )
ResetFieldBit(fields, fip->field_bit);
}
/*
* Write directory.
*/
dircount = (uint16) nfields;
diroff = (uint32) tif->tif_nextdiroff;
if (tif->tif_flags & TIFF_SWAB) {
/*
* The file's byte order is opposite to the
* native machine architecture. We overwrite
* the directory information with impunity
* because it'll be released below after we
* write it to the file. Note that all the
* other tag construction routines assume that
* we do this byte-swapping; i.e. they only
* byte-swap indirect data.
*/
for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) {
TIFFSwabArrayOfShort(&dir->tdir_tag, 2);
TIFFSwabArrayOfLong(&dir->tdir_count, 2);
}
dircount = (uint16) nfields;
TIFFSwabShort(&dircount);
TIFFSwabLong(&diroff);
}
(void) TIFFSeekFile(tif, tif->tif_diroff, SEEK_SET);
if (!WriteOK(tif, &dircount, sizeof (dircount))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory count");
goto bad;
}
if (!WriteOK(tif, data, dirsize)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory contents");
goto bad;
}
if (!WriteOK(tif, &diroff, sizeof (uint32))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory link");
goto bad;
}
if (done) {
TIFFFreeDirectory(tif);
tif->tif_flags &= ~TIFF_DIRTYDIRECT;
(*tif->tif_cleanup)(tif);
/*
* Reset directory-related state for subsequent
* directories.
*/
TIFFCreateDirectory(tif);
}
_TIFFfree(data);
return (1);
bad:
_TIFFfree(data);
return (0);
}
/*
* Read the next TIFF directory from a file
* and convert it to the internal format.
* We read directories sequentially.
*/
static uint32
ReadDirectory(int fd, unsigned ix, uint32 off)
{
register TIFFDirEntry *dp;
register int n;
TIFFDirEntry *dir = 0;
uint16 dircount;
int space;
uint32 nextdiroff = 0;
if (off == 0) /* no more directories */
goto done;
if (lseek(fd, (off_t) off, 0) != off) {
Fatal("Seek error accessing TIFF directory");
goto done;
}
if (read(fd, (char*) &dircount, sizeof (uint16)) != sizeof (uint16)) {
ReadError("directory count");
goto done;
}
if (swabflag)
TIFFSwabShort(&dircount);
dir = (TIFFDirEntry *)_TIFFmalloc(dircount * sizeof (TIFFDirEntry));
if (dir == NULL) {
Fatal("No space for TIFF directory");
goto done;
}
n = read(fd, (char*) dir, dircount*sizeof (*dp));
if (n != dircount*sizeof (*dp)) {
n /= sizeof (*dp);
Error(
"Could only read %u of %u entries in directory at offset %#lx",
n, dircount, (unsigned long) off);
dircount = n;
}
if (read(fd, (char*) &nextdiroff, sizeof (uint32)) != sizeof (uint32))
nextdiroff = 0;
if (swabflag)
TIFFSwabLong(&nextdiroff);
printf("Directory %u: offset %lu (%#lx) next %lu (%#lx)\n", ix,
(unsigned long) off, (unsigned long) off,
(unsigned long) nextdiroff, (unsigned long) nextdiroff);
for (dp = dir, n = dircount; n > 0; n--, dp++) {
if (swabflag) {
TIFFSwabArrayOfShort(&dp->tdir_tag, 2);
TIFFSwabArrayOfLong(&dp->tdir_count, 2);
}
PrintTag(stdout, dp->tdir_tag);
putchar(' ');
PrintType(stdout, dp->tdir_type);
putchar(' ');
printf("%lu<", (unsigned long) dp->tdir_count);
if (dp->tdir_type >= NWIDTHS) {
printf(">\n");
continue;
}
space = dp->tdir_count * datawidth[dp->tdir_type];
if (space <= 4) {
switch (dp->tdir_type) {
case TIFF_FLOAT:
case TIFF_UNDEFINED:
case TIFF_ASCII: {
unsigned char data[4];
_TIFFmemcpy(data, &dp->tdir_offset, 4);
if (swabflag)
TIFFSwabLong((uint32*) data);
PrintData(stdout,
dp->tdir_type, dp->tdir_count, data);
break;
}
case TIFF_BYTE:
PrintByte(stdout, bytefmt, dp);
break;
case TIFF_SBYTE:
PrintByte(stdout, sbytefmt, dp);
break;
case TIFF_SHORT:
PrintShort(stdout, shortfmt, dp);
break;
case TIFF_SSHORT:
PrintShort(stdout, sshortfmt, dp);
break;
case TIFF_LONG:
PrintLong(stdout, longfmt, dp);
break;
case TIFF_SLONG:
PrintLong(stdout, slongfmt, dp);
break;
}
} else {
unsigned char *data = (unsigned char *)_TIFFmalloc(space);
if (data) {
if (TIFFFetchData(fd, dp, data))
if (dp->tdir_count > maxitems) {
PrintData(stdout, dp->tdir_type,
maxitems, data);
printf(" ...");
} else
PrintData(stdout, dp->tdir_type,
dp->tdir_count, data);
_TIFFfree(data);
} else
Error("No space for data for tag %u",
dp->tdir_tag);
}
printf(">\n");
}
done:
if (dir)
_TIFFfree((char *)dir);
return (nextdiroff);
}
static int
NeXTDecode(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
{
static const char module[] = "NeXTDecode";
unsigned char *bp, *op;
tmsize_t cc;
uint8* row;
tmsize_t scanline, n;
(void) s;
/*
* Each scanline is assumed to start off as all
* white (we assume a PhotometricInterpretation
* of ``min-is-black'').
*/
for (op = (unsigned char*) buf, cc = occ; cc-- > 0;)
*op++ = 0xff;
bp = (unsigned char *)tif->tif_rawcp;
cc = tif->tif_rawcc;
scanline = tif->tif_scanlinesize;
if (occ % scanline)
{
TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read");
return (0);
}
for (row = buf; cc > 0 && occ > 0; occ -= scanline, row += scanline) {
n = *bp++, cc--;
switch (n) {
case LITERALROW:
/*
* The entire scanline is given as literal values.
*/
if (cc < scanline)
goto bad;
_TIFFmemcpy(row, bp, scanline);
bp += scanline;
cc -= scanline;
break;
case LITERALSPAN: {
tmsize_t off;
/*
* The scanline has a literal span that begins at some
* offset.
*/
if( cc < 4 )
goto bad;
off = (bp[0] * 256) + bp[1];
n = (bp[2] * 256) + bp[3];
if (cc < 4+n || off+n > scanline)
goto bad;
_TIFFmemcpy(row+off, bp+4, n);
bp += 4+n;
cc -= 4+n;
break;
}
default: {
uint32 npixels = 0, grey;
tmsize_t op_offset = 0;
uint32 imagewidth = tif->tif_dir.td_imagewidth;
if( isTiled(tif) )
imagewidth = tif->tif_dir.td_tilewidth;
/*
* The scanline is composed of a sequence of constant
* color ``runs''. We shift into ``run mode'' and
* interpret bytes as codes of the form
* <color><npixels> until we've filled the scanline.
*/
op = row;
for (;;) {
grey = (uint32)((n>>6) & 0x3);
n &= 0x3f;
/*
* Ensure the run does not exceed the scanline
* bounds, potentially resulting in a security
* issue.
*/
while (n-- > 0 && npixels < imagewidth && op_offset < scanline)
SETPIXEL(op, grey);
if (npixels >= imagewidth)
break;
if (op_offset >= scanline ) {
TIFFErrorExt(tif->tif_clientdata, module, "Invalid data for scanline %ld",
(long) tif->tif_row);
return (0);
}
if (cc == 0)
goto bad;
n = *bp++, cc--;
}
break;
}
}
}
tif->tif_rawcp = (uint8*) bp;
tif->tif_rawcc = cc;
return (1);
bad:
TIFFErrorExt(tif->tif_clientdata, module, "Not enough data for scanline %ld",
(long) tif->tif_row);
return (0);
}
int
copyFaxFile(TIFF* tifin, TIFF* tifout)
{
uint32 row;
uint32 linesize = TIFFhowmany8(xsize);
uint16 badrun;
int ok;
tifin->tif_rawdatasize = TIFFGetFileSize(tifin);
tifin->tif_rawdata = _TIFFmalloc(tifin->tif_rawdatasize);
if (tifin->tif_rawdata == NULL) {
TIFFError(tifin->tif_name, "Not enough memory");
return (0);
}
if (!ReadOK(tifin, tifin->tif_rawdata, tifin->tif_rawdatasize)) {
TIFFError(tifin->tif_name, "Read error at scanline 0");
return (0);
}
tifin->tif_rawcp = tifin->tif_rawdata;
tifin->tif_rawcc = tifin->tif_rawdatasize;
(*tifin->tif_setupdecode)(tifin);
(*tifin->tif_predecode)(tifin, (tsample_t) 0);
tifin->tif_row = 0;
badfaxlines = 0;
badfaxrun = 0;
_TIFFmemset(refbuf, 0, linesize);
row = 0;
badrun = 0; /* current run of bad lines */
while (tifin->tif_rawcc > 0) {
ok = (*tifin->tif_decoderow)(tifin, (tdata_t) rowbuf,
linesize, 0);
if (!ok) {
badfaxlines++;
badrun++;
/* regenerate line from previous good line */
_TIFFmemcpy(rowbuf, refbuf, linesize);
} else {
if (badrun > badfaxrun)
badfaxrun = badrun;
badrun = 0;
_TIFFmemcpy(refbuf, rowbuf, linesize);
}
tifin->tif_row++;
if (TIFFWriteScanline(tifout, rowbuf, row, 0) < 0) {
fprintf(stderr, "%s: Write error at row %ld.\n",
tifout->tif_name, (long) row);
break;
}
row++;
if (stretch) {
if (TIFFWriteScanline(tifout, rowbuf, row, 0) < 0) {
fprintf(stderr, "%s: Write error at row %ld.\n",
tifout->tif_name, (long) row);
break;
}
row++;
}
}
if (badrun > badfaxrun)
badfaxrun = badrun;
_TIFFfree(tifin->tif_rawdata);
return (row);
}
static tmsize_t
TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
if (!_TIFFFillStriles( tif ))
return ((tmsize_t)(-1));
assert((tif->tif_flags&TIFF_NOREADRAW)==0);
if (!isMapped(tif)) {
tmsize_t cc;
if (!SeekOK(tif, td->td_stripoffset[tile])) {
TIFFErrorExt(tif->tif_clientdata, module,
"Seek error at row %lu, col %lu, tile %lu",
(unsigned long) tif->tif_row,
(unsigned long) tif->tif_col,
(unsigned long) tile);
return ((tmsize_t)(-1));
}
cc = TIFFReadFile(tif, buf, size);
if (cc != size) {
#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at row %lu, col %lu; got %I64u bytes, expected %I64u",
(unsigned long) tif->tif_row,
(unsigned long) tif->tif_col,
(unsigned __int64) cc,
(unsigned __int64) size);
#else
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at row %lu, col %lu; got %llu bytes, expected %llu",
(unsigned long) tif->tif_row,
(unsigned long) tif->tif_col,
(unsigned long long) cc,
(unsigned long long) size);
#endif
return ((tmsize_t)(-1));
}
} else {
tmsize_t ma,mb;
tmsize_t n;
ma=(tmsize_t)td->td_stripoffset[tile];
mb=ma+size;
if (((uint64)ma!=td->td_stripoffset[tile])||(ma>tif->tif_size))
n=0;
else if ((mb<ma)||(mb<size)||(mb>tif->tif_size))
n=tif->tif_size-ma;
else
n=size;
if (n!=size) {
#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at row %lu, col %lu, tile %lu; got %I64u bytes, expected %I64u",
(unsigned long) tif->tif_row,
(unsigned long) tif->tif_col,
(unsigned long) tile,
(unsigned __int64) n,
(unsigned __int64) size);
#else
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at row %lu, col %lu, tile %lu; got %llu bytes, expected %llu",
(unsigned long) tif->tif_row,
(unsigned long) tif->tif_col,
(unsigned long) tile,
(unsigned long long) n,
(unsigned long long) size);
#endif
return ((tmsize_t)(-1));
}
_TIFFmemcpy(buf, tif->tif_base + ma, size);
}
return (size);
}
static int
copyFaxFile(FreeImageIO *io, fi_handle handle, TIFF* tifin, uint32 xsize, int stretch, FIMEMORY *memory) {
BYTE *rowbuf = NULL;
BYTE *refbuf = NULL;
uint32 row;
uint16 badrun;
uint16 badfaxrun;
uint32 badfaxlines;
int ok;
try {
uint32 linesize = TIFFhowmany8(xsize);
rowbuf = (BYTE*) _TIFFmalloc(linesize);
refbuf = (BYTE*) _TIFFmalloc(linesize);
if (rowbuf == NULL || refbuf == NULL) {
throw FI_MSG_ERROR_MEMORY;
}
tifin->tif_rawdatasize = G3GetFileSize(io, handle);
tifin->tif_rawdata = (tidata_t) _TIFFmalloc(tifin->tif_rawdatasize);
if (tifin->tif_rawdata == NULL) {
throw FI_MSG_ERROR_MEMORY;
}
if(!G3ReadFile(io, handle, tifin->tif_rawdata, tifin->tif_rawdatasize)) {
throw "Read error at scanline 0";
}
tifin->tif_rawcp = tifin->tif_rawdata;
tifin->tif_rawcc = tifin->tif_rawdatasize;
(*tifin->tif_setupdecode)(tifin);
(*tifin->tif_predecode)(tifin, (uint16) 0);
tifin->tif_row = 0;
badfaxlines = 0;
badfaxrun = 0;
_TIFFmemset(refbuf, 0, linesize);
row = 0;
badrun = 0; // current run of bad lines
while (tifin->tif_rawcc > 0) {
ok = (*tifin->tif_decoderow)(tifin, rowbuf, linesize, 0);
if (!ok) {
badfaxlines++;
badrun++;
// regenerate line from previous good line
_TIFFmemcpy(rowbuf, refbuf, linesize);
} else {
if (badrun > badfaxrun)
badfaxrun = badrun;
badrun = 0;
_TIFFmemcpy(refbuf, rowbuf, linesize);
}
tifin->tif_row++;
FreeImage_WriteMemory(rowbuf, linesize, 1, memory);
row++;
if (stretch) {
FreeImage_WriteMemory(rowbuf, linesize, 1, memory);
row++;
}
}
if (badrun > badfaxrun)
badfaxrun = badrun;
_TIFFfree(tifin->tif_rawdata);
tifin->tif_rawdata = NULL;
_TIFFfree(rowbuf);
_TIFFfree(refbuf);
/*
if (verbose) {
fprintf(stderr, "%d rows in input\n", rows);
fprintf(stderr, "%ld total bad rows\n", (long) badfaxlines);
fprintf(stderr, "%d max consecutive bad rows\n", badfaxrun);
}
*/
} catch(const char *message) {
if(rowbuf) _TIFFfree(rowbuf);
if(refbuf) _TIFFfree(refbuf);
if(tifin->tif_rawdata) {
_TIFFfree(tifin->tif_rawdata);
tifin->tif_rawdata = NULL;
}
FreeImage_OutputMessageProc(s_format_id, message);
return -1;
}
return (row);
}
/* This function will write an entire directory to the disk, and return the
offset value indicating where in the file it wrote the beginning of the
directory structure. This is NOT the same as the offset value before
calling this function, because some of the fields may have caused various
data items to be written out BEFORE writing the directory structure.
This code was basically written by ripping of the TIFFWriteDirectory()
code and generalizing it, using RPS's TIFFWritePliIfd() code for
inspiration. My original goal was to make this code general enough that
the original TIFFWriteDirectory() could be rewritten to just call this
function with the appropriate field and field-accessing arguments.
However, now I realize that there's a lot of code that gets executed for
the main, standard TIFF directories that does not apply to special
private subdirectories, so such a reimplementation for the sake of
eliminating redundant or duplicate code is probably not possible,
unless we also pass in a Main flag to indiciate which type of handling
to do, which would be kind of a hack. I've marked those places where I
changed or ripped out code which would have to be re-inserted to
generalize this function. If it can be done in a clean and graceful way,
it would be a great way to generalize the TIFF library. Otherwise, I'll
just leave this code here where it duplicates but remains on top of and
hopefully mostly independent of the main TIFF library.
The caller will probably want to free the sub directory structure after
returning from this call, since otherwise once written out, the user
is likely to forget about it and leave data lying around.
*/
toff_t
TIFFWritePrivateDataSubDirectory(TIFF* tif,
uint32 pdir_fieldsset[], int pdir_fields_last,
TIFFFieldInfo *field_info,
int (*getFieldFn)(TIFF *tif, ttag_t tag, ...))
{
uint16 dircount;
uint32 diroff, nextdiroff;
ttag_t tag;
uint32 nfields;
tsize_t dirsize;
char* data;
TIFFDirEntry* dir;
u_long b, *fields, fields_size;
toff_t directory_offset;
TIFFFieldInfo* fip;
/*
* Deleted out all of the encoder flushing and such code from here -
* not necessary for subdirectories.
*/
/* Finish writing out any image data. */
TIFFFlushData(tif);
/*
* 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 <= pdir_fields_last; b++)
if (FieldSet(pdir_fieldsset, b))
/* Deleted code to make size of first 4 tags 2
instead of 1. */
nfields += 1;
dirsize = nfields * sizeof (TIFFDirEntry);
data = (char*) _TIFFmalloc(dirsize);
if (data == NULL) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Cannot write private subdirectory, out of space");
return (0);
}
/*
* Place directory in data section of the file. If there isn't one
* yet, place it at the end of the file. The directory is treated as
* data, so we don't link it into the directory structure at all.
*/
if (tif->tif_dataoff == 0)
tif->tif_dataoff =(TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1;
diroff = tif->tif_dataoff;
tif->tif_dataoff = (toff_t)(
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.
*/
/*
* We make a local copy of the fieldsset here so that we don't mess
* up the original one when we call ResetFieldBit(). But I'm not sure
* why the original code calls ResetFieldBit(), since we're already
* going through the fields in order...
*
* fields_size is the number of uint32's we will need to hold the
* bit-mask for all of the fields. If our highest field number is
* 100, then we'll need 100 / (8*4)+1 == 4 uint32's to hold the
* fieldset.
*
* Unlike the original code, we allocate fields dynamically based
* on the requested pdir_fields_last value, allowing private
* data subdirectories to contain more than the built-in code's limit
* of 95 tags in a directory.
*/
fields_size = pdir_fields_last / (8*sizeof(uint32)) + 1;
fields = _TIFFmalloc(fields_size*sizeof(uint32));
_TIFFmemcpy(fields, pdir_fieldsset, fields_size * sizeof(uint32));
/* Deleted "write out extra samples tag" code here. */
/* Deleted code for checking a billion little special cases for the
* standard TIFF tags. Should add a general mechanism for overloading
* write function for each field, just like Brian kept telling me!!!
*/
for (fip = field_info; fip->field_tag; fip++) {
/* Deleted code to check for FIELD_IGNORE!! */
if (/* fip->field_bit == FIELD_IGNORE || */
!FieldSet(fields, fip->field_bit))
continue;
if (!TIFFWriteNormalSubTag(tif, dir, fip, getFieldFn))
goto bad;
dir++;
ResetFieldBit(fields, fip->field_bit);
}
/* Now we've written all of the referenced data, and are about to
write the main directory structure, so grab the tif_dataoff value
now so we can remember where we wrote the directory. */
directory_offset = tif->tif_dataoff;
/*
* Write directory.
*/
dircount = (uint16) nfields;
/* Deleted code to link to the next directory - we set it to zero! */
nextdiroff = 0;
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(&nextdiroff);
}
(void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
if (!WriteOK(tif, &dircount, sizeof (dircount))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing private subdirectory count");
goto bad;
}
if (!WriteOK(tif, data, dirsize)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing private subdirectory contents");
goto bad;
}
if (!WriteOK(tif, &nextdiroff, sizeof (nextdiroff))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing private subdirectory link");
goto bad;
}
tif->tif_dataoff += sizeof(dircount) + dirsize + sizeof(nextdiroff);
_TIFFfree(data);
_TIFFfree(fields);
tif->tif_flags &= ~TIFF_DIRTYDIRECT;
#if (0)
/* This stuff commented out because I don't think we want it for
subdirectories, but I could be wrong. */
(*tif->tif_cleanup)(tif);
/*
* Reset directory-related state for subsequent
* directories.
*/
TIFFDefaultDirectory(tif);
tif->tif_curoff = 0;
tif->tif_row = (uint32) -1;
tif->tif_curstrip = (tstrip_t) -1;
#endif
return (directory_offset);
bad:
_TIFFfree(data);
_TIFFfree(fields);
return (0);
}
static tmsize_t
TIFFReadRawStrip1(TIFF* tif, uint32 strip, void* buf, tmsize_t size,
const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
if (!_TIFFFillStriles( tif ))
return ((tmsize_t)(-1));
assert((tif->tif_flags&TIFF_NOREADRAW)==0);
if (!isMapped(tif)) {
tmsize_t cc;
if (!SeekOK(tif, td->td_stripoffset[strip])) {
TIFFErrorExt(tif->tif_clientdata, module,
"Seek error at scanline %lu, strip %lu",
(unsigned long) tif->tif_row, (unsigned long) strip);
return ((tmsize_t)(-1));
}
cc = TIFFReadFile(tif, buf, size);
if (cc != size) {
#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at scanline %lu; got %I64u bytes, expected %I64u",
(unsigned long) tif->tif_row,
(unsigned __int64) cc,
(unsigned __int64) size);
#else
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at scanline %lu; got %llu bytes, expected %llu",
(unsigned long) tif->tif_row,
(unsigned long long) cc,
(unsigned long long) size);
#endif
return ((tmsize_t)(-1));
}
} else {
tmsize_t ma = 0;
tmsize_t n;
if ((td->td_stripoffset[strip] > (uint64)TIFF_TMSIZE_T_MAX)||
((ma=(tmsize_t)td->td_stripoffset[strip])>tif->tif_size))
{
n=0;
}
else if( ma > TIFF_TMSIZE_T_MAX - size )
{
n=0;
}
else
{
tmsize_t mb=ma+size;
if (mb>tif->tif_size)
n=tif->tif_size-ma;
else
n=size;
}
if (n!=size) {
#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at scanline %lu, strip %lu; got %I64u bytes, expected %I64u",
(unsigned long) tif->tif_row,
(unsigned long) strip,
(unsigned __int64) n,
(unsigned __int64) size);
#else
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at scanline %lu, strip %lu; got %llu bytes, expected %llu",
(unsigned long) tif->tif_row,
(unsigned long) strip,
(unsigned long long) n,
(unsigned long long) size);
#endif
return ((tmsize_t)(-1));
}
_TIFFmemcpy(buf, tif->tif_base + ma,
size);
}
return (size);
}
int
main(int argc, char* argv[])
{
int c;
int dirnum = -1;
uint32 diroff = 0;
oerror = TIFFSetErrorHandler(NULL);
owarning = TIFFSetWarningHandler(NULL);
while ((c = getopt(argc, argv, "d:o:p:eflmsvw?")) != -1)
switch (c) {
case 'd':
dirnum = atoi(optarg);
break;
case 'e':
oerror = TIFFSetErrorHandler(oerror);
break;
case 'l':
order0 = FILLORDER_LSB2MSB;
break;
case 'm':
order0 = FILLORDER_MSB2LSB;
break;
case 'o':
diroff = strtoul(optarg, NULL, 0);
break;
case 'p':
photo0 = photoArg(optarg);
break;
case 's':
stoponerr = 1;
break;
case 'w':
owarning = TIFFSetWarningHandler(owarning);
break;
case 'v':
verbose = 1;
break;
case '?':
usage();
/*NOTREACHED*/
}
filenum = argc - optind;
if ( filenum < 1)
usage();
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
/*
* Get the screen size
*/
xmax = glutGet(GLUT_SCREEN_WIDTH);
ymax = glutGet(GLUT_SCREEN_HEIGHT);
/*
* Use 90% of the screen size
*/
xmax = xmax - xmax / 10.0;
ymax = ymax - ymax / 10.0;
filelist = (char **) _TIFFmalloc(filenum * sizeof(char*));
if (!filelist) {
TIFFError(argv[0], "Can not allocate space for the file list.");
return 1;
}
_TIFFmemcpy(filelist, argv + optind, filenum * sizeof(char*));
fileindex = -1;
if (nextImage() < 0) {
_TIFFfree(filelist);
return 2;
}
/*
* Set initial directory if user-specified
* file was opened successfully.
*/
if (dirnum != -1 && !TIFFSetDirectory(tif, dirnum))
TIFFError(argv[0], "Error, seeking to directory %d", dirnum);
if (diroff != 0 && !TIFFSetSubDirectory(tif, diroff))
TIFFError(argv[0], "Error, setting subdirectory at %#x", diroff);
order = order0;
photo = photo0;
if (initImage() < 0){
_TIFFfree(filelist);
return 3;
}
/*
* Create a new window or reconfigure an existing
* one to suit the image to be displayed.
*/
glutInitWindowSize(width, height);
snprintf(title, TITLE_LENGTH - 1, "%s [%u]", filelist[fileindex],
(unsigned int) TIFFCurrentDirectory(tif));
glutCreateWindow(title);
glutDisplayFunc(raster_draw);
glutReshapeFunc(raster_reshape);
glutKeyboardFunc(raster_keys);
glutSpecialFunc(raster_special);
glutMainLoop();
cleanup_and_exit();
return 0;
}
static int
cvt_by_strip( TIFF *in, TIFF *out )
{
uint32* raster; /* retrieve RGBA image */
uint32 width, height; /* image width & height */
uint32 row;
uint32 *wrk_line;
int ok = 1;
uint32 rastersize, wrk_linesize;
TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
if( !TIFFGetField(in, TIFFTAG_ROWSPERSTRIP, &rowsperstrip) ) {
TIFFError(TIFFFileName(in), "Source image not in strips");
return (0);
}
TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
/*
* Allocate strip buffer
*/
rastersize = width * rowsperstrip * sizeof (uint32);
if (width != (rastersize / rowsperstrip) / sizeof( uint32))
{
TIFFError(TIFFFileName(in), "Integer overflow when calculating raster buffer");
exit(-1);
}
raster = (uint32*)_TIFFmalloc(rastersize);
if (raster == 0) {
TIFFError(TIFFFileName(in), "No space for raster buffer");
return (0);
}
/*
* Allocate a scanline buffer for swapping during the vertical
* mirroring pass.
*/
wrk_linesize = width * sizeof (uint32);
if (width != wrk_linesize / sizeof (uint32))
{
TIFFError(TIFFFileName(in), "Integer overflow when calculating wrk_line buffer");
exit(-1);
}
wrk_line = (uint32*)_TIFFmalloc(wrk_linesize);
if (!wrk_line) {
TIFFError(TIFFFileName(in), "No space for raster scanline buffer");
ok = 0;
}
/*
* Loop over the strips.
*/
for( row = 0; ok && row < height; row += rowsperstrip )
{
int rows_to_write, i_row;
/* Read the strip into an RGBA array */
if (!TIFFReadRGBAStrip(in, row, raster)) {
ok = 0;
break;
}
/*
* XXX: raster array has 4-byte unsigned integer type, that is why
* we should rearrange it here.
*/
#if HOST_BIGENDIAN
TIFFSwabArrayOfLong(raster, width * rowsperstrip);
#endif
/*
* Figure out the number of scanlines actually in this strip.
*/
if( row + rowsperstrip > height )
rows_to_write = height - row;
else
rows_to_write = rowsperstrip;
/*
* For some reason the TIFFReadRGBAStrip() function chooses the
* lower left corner as the origin. Vertically mirror scanlines.
*/
for( i_row = 0; i_row < rows_to_write / 2; i_row++ )
{
uint32 *top_line, *bottom_line;
top_line = raster + width * i_row;
bottom_line = raster + width * (rows_to_write-i_row-1);
_TIFFmemcpy(wrk_line, top_line, 4*width);
_TIFFmemcpy(top_line, bottom_line, 4*width);
_TIFFmemcpy(bottom_line, wrk_line, 4*width);
}
/*
* Write out the result in a strip
*/
if( TIFFWriteEncodedStrip( out, row / rowsperstrip, raster,
4 * rows_to_write * width ) == -1 )
{
ok = 0;
break;
}
}
_TIFFfree( raster );
_TIFFfree( wrk_line );
return ok;
}
static int
cvt_by_tile( TIFF *in, TIFF *out )
{
uint32* raster; /* retrieve RGBA image */
uint32 width, height; /* image width & height */
uint32 tile_width, tile_height;
uint32 row, col;
uint32 *wrk_line;
int ok = 1;
uint32 rastersize, wrk_linesize;
TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
if( !TIFFGetField(in, TIFFTAG_TILEWIDTH, &tile_width)
|| !TIFFGetField(in, TIFFTAG_TILELENGTH, &tile_height) ) {
TIFFError(TIFFFileName(in), "Source image not tiled");
return (0);
}
TIFFSetField(out, TIFFTAG_TILEWIDTH, tile_width );
TIFFSetField(out, TIFFTAG_TILELENGTH, tile_height );
/*
* Allocate tile buffer
*/
rastersize = tile_width * tile_height * sizeof (uint32);
if (tile_width != (rastersize / tile_height) / sizeof( uint32))
{
TIFFError(TIFFFileName(in), "Integer overflow when calculating raster buffer");
exit(-1);
}
raster = (uint32*)_TIFFmalloc(rastersize);
if (raster == 0) {
TIFFError(TIFFFileName(in), "No space for raster buffer");
return (0);
}
/*
* Allocate a scanline buffer for swapping during the vertical
* mirroring pass.
*/
wrk_linesize = tile_width * sizeof (uint32);
if (tile_width != wrk_linesize / sizeof (uint32))
{
TIFFError(TIFFFileName(in), "Integer overflow when calculating wrk_line buffer");
exit(-1);
}
wrk_line = (uint32*)_TIFFmalloc(wrk_linesize);
if (!wrk_line) {
TIFFError(TIFFFileName(in), "No space for raster scanline buffer");
ok = 0;
}
/*
* Loop over the tiles.
*/
for( row = 0; ok && row < height; row += tile_height )
{
for( col = 0; ok && col < width; col += tile_width )
{
uint32 i_row;
/* Read the tile into an RGBA array */
if (!TIFFReadRGBATile(in, col, row, raster)) {
ok = 0;
break;
}
/*
* XXX: raster array has 4-byte unsigned integer type, that is why
* we should rearrange it here.
*/
#if HOST_BIGENDIAN
TIFFSwabArrayOfLong(raster, tile_width * tile_height);
#endif
/*
* For some reason the TIFFReadRGBATile() function chooses the
* lower left corner as the origin. Vertically mirror scanlines.
*/
for( i_row = 0; i_row < tile_height / 2; i_row++ )
{
uint32 *top_line, *bottom_line;
top_line = raster + tile_width * i_row;
bottom_line = raster + tile_width * (tile_height-i_row-1);
_TIFFmemcpy(wrk_line, top_line, 4*tile_width);
_TIFFmemcpy(top_line, bottom_line, 4*tile_width);
_TIFFmemcpy(bottom_line, wrk_line, 4*tile_width);
}
/*
* Write out the result in a tile.
*/
if( TIFFWriteEncodedTile( out,
TIFFComputeTile( out, col, row, 0, 0),
raster,
4 * tile_width * tile_height ) == -1 )
{
ok = 0;
break;
}
}
}
_TIFFfree( raster );
_TIFFfree( wrk_line );
return ok;
}
/*
* 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);
}
/*
* Function to convert standard TIFF file to BigTIFF file. Loop through all directories in
* current file (including subdirectories linked via SubIFD arrays) and create corresponding
* new directories with 64-bit arrays. The old 32-bit directories are left in the file as
* dead space. The data for directory entries are reused by default. Some directory entries
* require new data with 64-bit offsets (e.g. stripe/tile offsets and SubIFD arrays).
*
* Returns 1 if successful, 0 if cannot convert to BigTIFF (TIFF_NOBIGTIFF set
* or 32-bit API called).
*/
static int
TIFFMakeBigTIFF(TIFF *tif)
{
uint32 dirlink = TIFF_HEADER_DIROFF_S,
diroff = tif->tif_header.s.tiff_diroff;
toff_t dirlinkB = TIFF_HEADER_DIROFF_B,
diroffB;
uint16 dircount, dirindex;
uint64 dircountB;
tsize_t dirsize, dirsizeB;
int issubifd = 0;
uint32 subifdcnt = 0;
uint32 subifdlink;
toff_t subifdlinkB;
char *data, *dataB;
TIFFDirEntry *dir, *dirB;
/*
* Update flags and file header
*/
if (noBigTIFF(tif)) {
TIFFErrorExt((tif)->tif_clientdata,
"TIFFCheckBigTIFF", "File > 2^32 and NO BigTIFF specified");
return (0);
}
tif->tif_flags |= TIFF_ISBIGTIFF;
tif->tif_header.b.tiff_version = TIFF_BIGTIFF_VERSION;
tif->tif_header.b.tiff_offsize = 8;
tif->tif_header.b.tiff_fill = 0;
tif->tif_header.b.tiff_diroff = 0;
if (tif->tif_flags & TIFF_SWAB) {
TIFFSwabShort(&tif->tif_header.b.tiff_version);
TIFFSwabShort(&tif->tif_header.b.tiff_offsize);
}
if (!SeekOK(tif, 0) ||
!WriteOK(tif, &tif->tif_header, sizeof(TIFFHeader))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error updating TIFF header (%d)", TIFFGetErrno(tif));
return (0);
}
if (tif->tif_flags & TIFF_SWAB) {
TIFFSwabShort(&tif->tif_header.b.tiff_version);
TIFFSwabShort(&tif->tif_header.b.tiff_offsize);
}
/*
* Loop through all directories and rewrite as BigTIFF with 64-bit offsets. This
* begins with main IFD chain but may divert to SubIFD arrays as needed.
*/
while (diroff != 0 && diroff != tif->tif_diroff) {
if (!SeekOK(tif, diroff) ||
!ReadOK(tif, &dircount, sizeof(dircount))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error reading TIFF directory (%d)", TIFFGetErrno(tif));
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
dircountB = dircount;
if (!(data = _TIFFmalloc(dirsize = dircount * TIFFDirEntryLenS)) ||
!(dataB = _TIFFmalloc(dirsizeB = dircount * TIFFDirEntryLenB))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error allocating space for directory");
return (0);
}
if (!SeekOK(tif, diroff + sizeof(dircount)) ||
!ReadOK(tif, data, dirsize)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error reading TIFF directory (%d)", TIFFGetErrno(tif));
goto error;
}
diroffB = tif->tif_dataoff;
tif->tif_dataoff += sizeof(dircountB) + dirsizeB + sizeof(toff_t);
for (dirindex = 0; dirindex < dircount; dirindex++) {
dir = (TIFFDirEntry*) (data + dirindex * TIFFDirEntryLenS);
dirB = (TIFFDirEntry*) (dataB + dirindex * TIFFDirEntryLenB);
if (tif->tif_flags & TIFF_SWAB) {
TIFFSwabShort(&dir->s.tdir_tag);
TIFFSwabShort(&dir->s.tdir_type);
TIFFSwabLong(&dir->s.tdir_count);
TIFFSwabLong(&dir->s.tdir_offset);
}
dirB->b.tdir_tag = dir->s.tdir_tag;
dirB->b.tdir_type = dir->s.tdir_type;
dirB->b.tdir_count = dir->s.tdir_count;
dirB->b.tdir_offset = 0;
/*
* If data are in directory entry itself, copy data, else (data are pointed
* to by directory entry) copy pointer. This is complicated by the fact that
* the old entry had 32-bits of space, and the new has 64-bits, so may have
* to read data pointed at by the old entry directly into the new entry.
*/
switch (dir->s.tdir_type) {
case TIFF_UNDEFINED:
case TIFF_BYTE:
case TIFF_SBYTE:
case TIFF_ASCII:
if (dir->s.tdir_count <= sizeof(dir->s.tdir_offset))
_TIFFmemcpy(&dirB->b.tdir_offset, &dir->s.tdir_offset, dir->s.tdir_count);
else if (dir->s.tdir_count <= sizeof(dirB->b.tdir_count)) {
TIFFSeekFile(tif, dir->s.tdir_offset, SEEK_SET);
TIFFReadFile(tif, &dirB->b.tdir_offset, dir->s.tdir_count);
} else
dirB->b.tdir_offset = dir->s.tdir_offset;
break;
case TIFF_SHORT:
case TIFF_SSHORT:
if (dir->s.tdir_count <= sizeof(dir->s.tdir_offset) / sizeof(uint16))
_TIFFmemcpy(&dirB->b.tdir_offset, &dir->s.tdir_offset, dir->s.tdir_count * sizeof(uint16));
else if (dir->s.tdir_count <= sizeof(dirB->b.tdir_count) / sizeof(uint16)) {
TIFFSeekFile(tif, dir->s.tdir_offset, SEEK_SET);
TIFFReadFile(tif, &dirB->b.tdir_offset, dir->s.tdir_count * sizeof(uint16));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfShort((uint16*) &dirB->b.tdir_offset, dir->s.tdir_count);
} else
dirB->b.tdir_offset = dir->s.tdir_offset;
break;
case TIFF_LONG:
case TIFF_FLOAT:
case TIFF_IFD:
if (dir->s.tdir_count <= sizeof(dir->s.tdir_offset) / sizeof(uint32))
_TIFFmemcpy(&dirB->b.tdir_offset, &dir->s.tdir_offset, dir->s.tdir_count * sizeof(uint32));
else if (dir->s.tdir_count <= sizeof(dirB->b.tdir_count) / sizeof(uint32)) {
TIFFSeekFile(tif, dir->s.tdir_offset, SEEK_SET);
TIFFReadFile(tif, &dirB->b.tdir_offset, dir->s.tdir_count * sizeof(uint32));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong((uint32*) &dirB->b.tdir_offset, dir->s.tdir_count);
} else
dirB->b.tdir_offset = dir->s.tdir_offset;
break;
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
if (dir->s.tdir_count * 2 <= sizeof(dirB->b.tdir_offset) / sizeof(uint32)) {
TIFFSeekFile(tif, dir->s.tdir_offset, SEEK_SET);
TIFFReadFile(tif, &dirB->b.tdir_offset, dir->s.tdir_count * 2 * sizeof(uint32));
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabArrayOfLong((uint32*) &dirB->b.tdir_offset, dir->s.tdir_count * 2);
} else
dirB->b.tdir_offset = dir->s.tdir_offset;
break;
default:
dirB->b.tdir_offset = dir->s.tdir_offset;
break;
}
/*
* Process special case of SUBIFD; must change data from 32-bit to 64-bit in
* case new 64-bit directory offsets need to be added.
*/
switch (dirB->b.tdir_tag) {
case TIFFTAG_SUBIFD:
dirB->b.tdir_type = TIFF_IFD8;
subifdcnt = dir->s.tdir_count;
/*
* Set pointer to existing SubIFD array
*/
if (subifdcnt <= sizeof(dir->s.tdir_offset) / sizeof(uint32))
subifdlink = diroff + sizeof(dircount) +
(char*) &dir->s.tdir_offset - (char*) dir;
else
subifdlink = dir->s.tdir_offset;
/*
* Initialize new SubIFD array, set pointer to it
*/
if (subifdcnt <= sizeof(dir->b.tdir_offset) / sizeof(toff_t)) {
dir->b.tdir_offset = 0;
subifdlinkB = diroffB + sizeof(dircountB) +
(char*) &dir->b.tdir_offset - (char*) dirB;
} else {
toff_t *offB;
if (!(offB = _TIFFmalloc(subifdcnt * sizeof(toff_t)))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error allocating space for 64-bit SubIFDs");
goto error;
}
_TIFFmemset(offB, 0, subifdcnt * sizeof(toff_t));
TIFFWriteLong8Array(tif, dirB, offB);
_TIFFfree(offB);
subifdlinkB = dirB->b.tdir_offset;
}
break;
}
if (tif->tif_flags & TIFF_SWAB) {
TIFFSwabShort(&dirB->b.tdir_tag);
TIFFSwabShort(&dirB->b.tdir_type);
TIFFSwabLong8(&dirB->b.tdir_count);
TIFFSwabLong8(&dirB->b.tdir_offset);
}
}
/*
* Write out new directory and chain to previous
*/
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&dircountB);
if (!SeekOK(tif, diroffB) ||
!WriteOK(tif, &dircountB, sizeof(dircountB)) ||
!SeekOK(tif, diroffB + sizeof(dircountB)) ||
!WriteOK(tif, dataB, dirsizeB)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing TIFF directory (%d)", TIFFGetErrno(tif));
goto error;
}
/*
* If directory is SubIFD update array in host directory, else add to
* main directory chain
*/
if (tif->tif_nsubifd &&
tif->tif_subifdoff == subifdlink)
tif->tif_subifdoff = subifdlinkB;
if (!issubifd &&
dirlinkB == TIFF_HEADER_DIROFF_B)
tif->tif_header.b.tiff_diroff = diroffB;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&diroffB);
if (!SeekOK(tif, (issubifd ? subifdlinkB++ : dirlinkB)) ||
!WriteOK(tif, &diroffB, sizeof(diroffB))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory link (%d)", TIFFGetErrno(tif));
goto error;
}
if (issubifd)
subifdcnt--;
else {
dirlink = diroff + sizeof(dircount) + dirsize;
dirlinkB = diroffB + sizeof(dircountB) + dirsizeB;
}
issubifd = (subifdcnt > 0);
if (!SeekOK(tif, (issubifd ? subifdlink++ : dirlink)) ||
!ReadOK(tif, &diroff, sizeof(diroff))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error reading directory link (%d)", TIFFGetErrno(tif));
goto error;
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&diroff);
_TIFFfree(dataB);
_TIFFfree(data);
}
/*
* Mark end of directory chain
*/
diroffB = 0;
if (dirlinkB == TIFF_HEADER_DIROFF_B)
tif->tif_header.b.tiff_diroff = diroffB;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong8(&diroffB);
if (!SeekOK(tif, dirlinkB) ||
!WriteOK(tif, &diroffB, sizeof(diroffB))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing directory link (%d)", TIFFGetErrno(tif));
goto error;
}
return (1);
error:
_TIFFfree(dataB);
_TIFFfree(data);
return (0);
}
static int
PackBitsDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
{
static const char module[] = "PackBitsDecode";
char *bp;
tmsize_t cc;
long n;
int b;
(void) s;
bp = (char*) tif->tif_rawcp;
cc = tif->tif_rawcc;
while (cc > 0 && occ > 0) {
n = (long) *bp++, cc--;
/*
* Watch out for compilers that
* don't sign extend chars...
*/
if (n >= 128)
n -= 256;
if (n < 0) { /* replicate next byte -n+1 times */
if (n == -128) /* nop */
continue;
n = -n + 1;
if( occ < (tmsize_t)n )
{
TIFFWarningExt(tif->tif_clientdata, module,
"Discarding %lu bytes to avoid buffer overrun",
(unsigned long) ((tmsize_t)n - occ));
n = (long)occ;
}
occ -= n;
b = *bp++, cc--;
while (n-- > 0)
*op++ = (uint8) b;
} else { /* copy next n+1 bytes literally */
if (occ < (tmsize_t)(n + 1))
{
TIFFWarningExt(tif->tif_clientdata, module,
"Discarding %lu bytes to avoid buffer overrun",
(unsigned long) ((tmsize_t)n - occ + 1));
n = (long)occ - 1;
}
if (cc < (tmsize_t) (n+1))
{
TIFFWarningExt(tif->tif_clientdata, module,
"Terminating PackBitsDecode due to lack of data.");
break;
}
_TIFFmemcpy(op, bp, ++n);
op += n; occ -= n;
bp += n; cc -= n;
}
}
tif->tif_rawcp = (uint8*) bp;
tif->tif_rawcc = cc;
if (occ > 0) {
TIFFErrorExt(tif->tif_clientdata, module,
"Not enough data for scanline %lu",
(unsigned long) tif->tif_row);
return (0);
}
return (1);
}