/*
* Append the data to the specified strip.
*
* NB: We don't check that there's space in the
* file (i.e. that strips do not overlap).
*/
static int
TIFFAppendToStrip(TIFF* tif, tstrip_t strip, tidata_t data, tsize_t cc)
{
TIFFDirectory *td = &tif->tif_dir;
static const char module[] = "TIFFAppendToStrip";
if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
/*
* No current offset, set the current strip.
*/
if (td->td_stripoffset[strip] != 0) {
if (!SeekOK(tif, td->td_stripoffset[strip])) {
TIFFError(module,
"%s: Seek error at scanline %lu",
tif->tif_name, (u_long) tif->tif_row);
return (0);
}
} else
td->td_stripoffset[strip] =
TIFFSeekFile(tif, (toff_t) 0, SEEK_END);
tif->tif_curoff = td->td_stripoffset[strip];
}
if (!WriteOK(tif, data, cc)) {
TIFFError(module, "%s: Write error at scanline %lu",
tif->tif_name, (u_long) tif->tif_row);
return (0);
}
tif->tif_curoff += cc;
td->td_stripbytecount[strip] += cc;
return (1);
}
static tsize_t
TIFFReadRawStrip1(TIFF* tif,
tstrip_t strip, tdata_t buf, tsize_t size, const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
if (!isMapped(tif)) {
if (!SeekOK(tif, td->td_stripoffset[strip])) {
TIFFError(module,
"%s: Seek error at scanline %lu, strip %lu",
tif->tif_name,
(u_long) tif->tif_row, (u_long) strip);
return (-1);
}
if (!ReadOK(tif, buf, size)) {
TIFFError(module, "%s: Read error at scanline %lu",
tif->tif_name, (u_long) tif->tif_row);
return (-1);
}
} else {
if (td->td_stripoffset[strip] + size > tif->tif_size) {
TIFFError(module,
"%s: Seek error at scanline %lu, strip %lu",
tif->tif_name,
(u_long) tif->tif_row, (u_long) strip);
return (-1);
}
memcpy(buf, tif->tif_base + td->td_stripoffset[strip], size);
}
return (size);
}
/*
* Append the data to the specified strip.
*/
static int
TIFFAppendToStrip(TIFF *tif, tstrip_t strip, tidata_t data, tsize_t cc)
{
static const char module[] = "TIFFAppendToStrip";
TIFFDirectory *td = &tif->tif_dir;
if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0)
{
assert(td->td_nstrips > 0);
if (td->td_stripbytecount[strip] != 0
&& td->td_stripoffset[strip] != 0
&& td->td_stripbytecount[strip] >= cc)
{
/*
* There is already tile data on disk, and the new tile
* data we have to will fit in the same space. The only
* aspect of this that is risky is that there could be
* more data to append to this strip before we are done
* depending on how we are getting called.
*/
if (!SeekOK(tif, td->td_stripoffset[strip]))
{
TIFFErrorExt(tif->tif_clientdata, module,
"Seek error at scanline %lu",
(unsigned long)tif->tif_row);
return (0);
}
}
else
{
/*
* Seek to end of file, and set that as our location to
* write this strip.
*/
td->td_stripoffset[strip] = TIFFSeekFile(tif, 0, SEEK_END);
}
tif->tif_curoff = td->td_stripoffset[strip];
/*
* We are starting a fresh strip/tile, so set the size to zero.
*/
td->td_stripbytecount[strip] = 0;
}
if (!WriteOK(tif, data, cc))
{
TIFFErrorExt(tif->tif_clientdata, module, "Write error at scanline %lu",
(unsigned long) tif->tif_row);
return (0);
}
tif->tif_curoff = tif->tif_curoff + cc;
td->td_stripbytecount[strip] += cc;
return (1);
}
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) {
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at row %lu, col %lu; got " TIFF_UINT64_FORMAT " bytes, expected " TIFF_UINT64_FORMAT,
(unsigned long) tif->tif_row,
(unsigned long) tif->tif_col,
(TIFF_UINT64_T) cc,
(TIFF_UINT64_T) size);
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) {
TIFFErrorExt(tif->tif_clientdata, module,
"Read error at row %lu, col %lu, tile %lu; got " TIFF_UINT64_FORMAT " bytes, expected " TIFF_UINT64_FORMAT,
(unsigned long) tif->tif_row,
(unsigned long) tif->tif_col,
(unsigned long) tile,
(TIFF_UINT64_T) n,
(TIFF_UINT64_T) size);
return ((tmsize_t)(-1));
}
_TIFFmemcpy(buf, tif->tif_base + ma, size);
}
return (size);
}
static tsize_t
TIFFReadRawTile1(TIFF* tif,
ttile_t tile, tdata_t buf, tsize_t size, const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
assert((tif->tif_flags&TIFF_NOREADRAW)==0);
if (!isMapped(tif)) {
tsize_t cc;
if (!SeekOK(tif, td->td_stripoffset[tile])) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Seek error at row %ld, col %ld, tile %ld",
tif->tif_name,
(long) tif->tif_row,
(long) tif->tif_col,
(long) tile);
return ((tsize_t) -1);
}
cc = TIFFReadFile(tif, buf, size);
if (cc != size) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Read error at row %ld, col %ld; got %lu bytes, expected %lu",
tif->tif_name,
(long) tif->tif_row,
(long) tif->tif_col,
(unsigned long) cc,
(unsigned long) size);
return ((tsize_t) -1);
}
} else {
if (td->td_stripoffset[tile] + size > tif->tif_size) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Read error at row %ld, col %ld, tile %ld; got %lu bytes, expected %lu",
tif->tif_name,
(long) tif->tif_row,
(long) tif->tif_col,
(long) tile,
(unsigned long) tif->tif_size - td->td_stripoffset[tile],
(unsigned long) size);
return ((tsize_t) -1);
}
_TIFFmemcpy(buf, tif->tif_base + td->td_stripoffset[tile], size);
}
return (size);
}
/*
* Write a contiguous directory item.
*/
static int
TIFFWriteData(TIFF* tif, TIFFDirEntry* dir, char* cp)
{
tsize_t cc;
if (tif->tif_flags & TIFF_SWAB) {
switch (dir->s.tdir_type) {
case TIFF_SHORT:
case TIFF_SSHORT:
TIFFSwabArrayOfShort((uint16*) cp, TDIRGetEntryCount(tif,dir));
break;
case TIFF_LONG:
case TIFF_SLONG:
case TIFF_IFD:
case TIFF_FLOAT:
TIFFSwabArrayOfLong((uint32*) cp, TDIRGetEntryCount(tif,dir));
break;
case TIFF_LONG8:
case TIFF_SLONG8:
case TIFF_IFD8:
TIFFSwabArrayOfLong8((uint64*) cp, TDIRGetEntryCount(tif,dir));
break;
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
TIFFSwabArrayOfLong((uint32*) cp, 2 * TDIRGetEntryCount(tif,dir));
break;
case TIFF_DOUBLE:
TIFFSwabArrayOfDouble((double*) cp, TDIRGetEntryCount(tif,dir));
break;
}
}
TDIRSetEntryOff(tif,dir,tif->tif_dataoff);
cc = TDIRGetEntryCount(tif,dir) * TIFFDataWidth((TIFFDataType) dir->s.tdir_type);
if (SeekOK(tif, tif->tif_dataoff) &&
WriteOK(tif, cp, cc)) {
tif->tif_dataoff += ((cc + 1) & ~1);
return (1);
}
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing data for field \"%s\" (%d)",
_TIFFFieldWithTag(tif, dir->s.tdir_tag)->field_name, TIFFGetErrno(tif));
return (0);
}
/*
* Fetch a contiguous directory item.
*/
static tsize_t
TIFFFetchData(TIFF* tif, TIFFDirEntry* dir, char* cp)
{
int w = tiffDataWidth[dir->tdir_type];
tsize_t cc = dir->tdir_count * w;
if (!isMapped(tif)) {
if (!SeekOK(tif, dir->tdir_offset))
goto bad;
if (!ReadOK(tif, cp, cc))
goto bad;
} else {
if (dir->tdir_offset + cc > tif->tif_size)
goto bad;
_TIFFmemcpy(cp, tif->tif_base + dir->tdir_offset, cc);
}
if (tif->tif_flags & TIFF_SWAB) {
switch (dir->tdir_type) {
case TIFF_SHORT:
case TIFF_SSHORT:
TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count);
break;
case TIFF_LONG:
case TIFF_SLONG:
case TIFF_FLOAT:
TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count);
break;
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count);
break;
case TIFF_DOUBLE:
TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count);
break;
}
}
return (cc);
bad:
TIFFError(tif->tif_name, "Error fetching data for field \"%s\"",
_TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
return ((tsize_t) 0);
}
static tsize_t
TIFFReadRawStrip1(TIFF* tif,
tstrip_t strip, tdata_t buf, tsize_t size, const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
if (!isMapped(tif)) {
tsize_t cc;
if (!SeekOK(tif, td->td_stripoffset[strip])) {
TIFFError(module,
"%s: Seek error at scanline %lu, strip %lu",
tif->tif_name,
(unsigned long) tif->tif_row, (unsigned long) strip);
return (-1);
}
cc = TIFFReadFile(tif, buf, size);
if (cc != size) {
TIFFError(module,
"%s: Read error at scanline %lu; got %lu bytes, expected %lu",
tif->tif_name,
(unsigned long) tif->tif_row,
(unsigned long) cc,
(unsigned long) size);
return (-1);
}
} else {
if (td->td_stripoffset[strip] + size > tif->tif_size) {
TIFFError(module,
"%s: Read error at scanline %lu, strip %lu; got %lu bytes, expected %lu",
tif->tif_name,
(unsigned long) tif->tif_row,
(unsigned long) strip,
(unsigned long) tif->tif_size - td->td_stripoffset[strip],
(unsigned long) size);
return (-1);
}
_TIFFmemcpy(buf, tif->tif_base + td->td_stripoffset[strip],
size);
}
return (size);
}
static tsize_t
TIFFReadRawTile1(TIFF* tif,
ttile_t tile, tdata_t buf, tsize_t size, const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
if (!isMapped(tif)) {
if (!SeekOK(tif, td->td_stripoffset[tile])) {
TIFFError(module,
"%s: Seek error at row %ld, col %ld, tile %ld",
tif->tif_name,
(long) tif->tif_row,
(long) tif->tif_col,
(long) tile);
return ((tsize_t) -1);
}
if (!ReadOK(tif, buf, size)) {
TIFFError(module, "%s: Read error at row %ld, col %ld",
tif->tif_name,
(long) tif->tif_row,
(long) tif->tif_col);
return ((tsize_t) -1);
}
} else {
if (td->td_stripoffset[tile] + size > tif->tif_size) {
TIFFError(module,
"%s: Seek error at row %ld, col %ld, tile %ld",
tif->tif_name,
(long) tif->tif_row,
(long) tif->tif_col,
(long) tile);
return ((tsize_t) -1);
}
memcpy(buf, tif->tif_base + td->td_stripoffset[tile], size);
}
return (size);
}
/*
* Write a contiguous directory item.
*/
static int
TIFFWriteData(TIFF* tif, TIFFDirEntry* dir, char* cp)
{
tsize_t cc;
if (tif->tif_flags & TIFF_SWAB) {
switch (dir->tdir_type) {
case TIFF_SHORT:
case TIFF_SSHORT:
TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count);
break;
case TIFF_LONG:
case TIFF_SLONG:
case TIFF_FLOAT:
TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count);
break;
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count);
break;
case TIFF_DOUBLE:
TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count);
break;
}
}
dir->tdir_offset = tif->tif_dataoff;
cc = dir->tdir_count * TIFFDataWidth((TIFFDataType) dir->tdir_type);
if (SeekOK(tif, dir->tdir_offset) &&
WriteOK(tif, cp, cc)) {
tif->tif_dataoff += (cc + 1) & ~1;
return (1);
}
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing data for field \"%s\"",
_TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
return (0);
}
static tmsize_t
TIFFReadRawStripOrTile2(TIFF* tif, uint32 strip_or_tile, int is_strip,
tmsize_t size, const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
assert( !isMapped(tif) );
assert((tif->tif_flags&TIFF_NOREADRAW)==0);
if (!SeekOK(tif, td->td_stripoffset[strip_or_tile])) {
if( is_strip )
{
TIFFErrorExt(tif->tif_clientdata, module,
"Seek error at scanline %lu, strip %lu",
(unsigned long) tif->tif_row,
(unsigned long) strip_or_tile);
}
else
{
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) strip_or_tile);
}
return ((tmsize_t)(-1));
}
if( !TIFFReadAndRealloc( tif, size, 0, is_strip,
strip_or_tile, module ) )
{
return ((tmsize_t)(-1));
}
return (size);
}
/*
* Append the data to the specified strip.
*/
static int
TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc)
{
static const char module[] = "TIFFAppendToStrip";
TIFFDirectory *td = &tif->tif_dir;
uint64 m;
int64 old_byte_count = -1;
if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
assert(td->td_nstrips > 0);
if( td->td_stripbytecount[strip] != 0
&& td->td_stripoffset[strip] != 0
&& td->td_stripbytecount[strip] >= (uint64) cc )
{
/*
* There is already tile data on disk, and the new tile
* data we have will fit in the same space. The only
* aspect of this that is risky is that there could be
* more data to append to this strip before we are done
* depending on how we are getting called.
*/
if (!SeekOK(tif, td->td_stripoffset[strip])) {
TIFFErrorExt(tif->tif_clientdata, module,
"Seek error at scanline %lu",
(unsigned long)tif->tif_row);
return (0);
}
}
else
{
/*
* Seek to end of file, and set that as our location to
* write this strip.
*/
td->td_stripoffset[strip] = TIFFSeekFile(tif, 0, SEEK_END);
tif->tif_flags |= TIFF_DIRTYSTRIP;
}
tif->tif_curoff = td->td_stripoffset[strip];
/*
* We are starting a fresh strip/tile, so set the size to zero.
*/
old_byte_count = td->td_stripbytecount[strip];
td->td_stripbytecount[strip] = 0;
}
m = tif->tif_curoff+cc;
if (!(tif->tif_flags&TIFF_BIGTIFF))
m = (uint32)m;
if ((m<tif->tif_curoff)||(m<(uint64)cc))
{
TIFFErrorExt(tif->tif_clientdata, module, "Maximum TIFF file size exceeded");
return (0);
}
if (!WriteOK(tif, data, cc)) {
TIFFErrorExt(tif->tif_clientdata, module, "Write error at scanline %lu",
(unsigned long) tif->tif_row);
return (0);
}
tif->tif_curoff = m;
td->td_stripbytecount[strip] += cc;
if( (int64) td->td_stripbytecount[strip] != old_byte_count )
tif->tif_flags |= TIFF_DIRTYSTRIP;
return (1);
}
/*
* Similar to TIFFWriteDirectory(), but if the directory has already
* been written once, it is relocated to the end of the file, in case it
* has changed in size. Note that this will result in the loss of the
* previously used directory space.
*/
int
TIFFRewriteDirectory( TIFF *tif )
{
static const char module[] = "TIFFRewriteDirectory";
/* We don't need to do anything special if it hasn't been written. */
if( tif->tif_diroff == 0 )
return TIFFWriteDirectory( tif );
/*
** Find and zero the pointer to this directory, so that TIFFLinkDirectory
** will cause it to be added after this directories current pre-link.
*/
/* Is it the first directory in the file? */
if (TIFFGetHdrDirOff(tif,tif->tif_header) == tif->tif_diroff)
{
TIFFSetHdrDirOff(tif,tif->tif_header,0);
tif->tif_diroff = 0;
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);
}
}
else
{
toff_t nextdir, off;
toff_t nextdiroff; /* 32-bit or 64-bit directory offset */
nextdir = TIFFGetHdrDirOff(tif,tif->tif_header);
do {
uint16 dircount;
if (!SeekOK(tif, nextdir) ||
!ReadOK(tif, &dircount, sizeof (dircount))) {
TIFFErrorExt(tif->tif_clientdata, module,
"Error fetching directory count (%d)", TIFFGetErrno(tif));
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
(void) TIFFSeekFile(tif, TIFFGetDirCnt(tif,dircount) * TDIREntryLen(tif), SEEK_CUR);
if (!ReadOK(tif, &nextdiroff, TIFFDirOffLen(tif))) {
TIFFErrorExt(tif->tif_clientdata, module,
"Error fetching directory link (%d)", TIFFGetErrno(tif));
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabDirOff(tif,&nextdiroff);
nextdir = TIFFGetDirOff(tif,nextdiroff);
} while (nextdir != tif->tif_diroff && nextdir != 0);
off = TIFFSeekFile(tif, 0, SEEK_CUR); /* get current offset */
(void) TIFFSeekFile(tif, off - TIFFDirOffLen(tif), SEEK_SET);
tif->tif_diroff = 0;
if (!WriteOK(tif, &(tif->tif_diroff), TIFFDirOffLen(tif))) {
TIFFErrorExt(tif->tif_clientdata, module,
"Error writing directory link (%d)", TIFFGetErrno(tif));
return (0);
}
}
/*
** Now use TIFFWriteDirectory() normally.
*/
return TIFFWriteDirectory( tif );
}
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);
}
/*
* Append the data to the specified strip.
*/
static int
TIFFAppendToStrip(TIFF* tif, tstrip_t strip, tidata_t data, tsize_t cc) {
TIFFDirectory* td = &tif->tif_dir;
static const char module[] = "TIFFAppendToStrip";
if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
/*
* No current offset, set the current strip.
*/
assert(td->td_nstrips > 0);
if (td->td_stripoffset[strip] != 0) {
/*
* Prevent overlapping of the data chunks. We need
* this to enable in place updating of the compressed
* images. Larger blocks will be moved at the end of
* the file without any optimization of the spare
* space, so such scheme is not too much effective.
*/
if (td->td_stripbytecountsorted) {
if (strip == td->td_nstrips - 1
|| td->td_stripoffset[strip + 1] <
td->td_stripoffset[strip] + cc) {
td->td_stripoffset[strip] =
TIFFSeekFile(tif, (toff_t)0,
SEEK_END);
}
} else {
tstrip_t i;
for (i = 0; i < td->td_nstrips; i++) {
if (td->td_stripoffset[i] >
td->td_stripoffset[strip]
&& td->td_stripoffset[i] <
td->td_stripoffset[strip] + cc) {
td->td_stripoffset[strip] =
TIFFSeekFile(tif,
(toff_t)0,
SEEK_END);
}
}
}
if (!SeekOK(tif, td->td_stripoffset[strip])) {
TIFFError(module,
"%s: Seek error at scanline %lu",
tif->tif_name,
(unsigned long)tif->tif_row);
return (0);
}
} else
td->td_stripoffset[strip] =
TIFFSeekFile(tif, (toff_t) 0, SEEK_END);
tif->tif_curoff = td->td_stripoffset[strip];
}
if (!WriteOK(tif, data, cc)) {
TIFFError(module, "%s: Write error at scanline %lu",
tif->tif_name, (unsigned long) tif->tif_row);
return (0);
}
tif->tif_curoff += cc;
td->td_stripbytecount[strip] += cc;
return (1);
}
/*
* Link the current directory into the
* directory chain for the file.
*/
static int
TIFFLinkDirectory(TIFF* tif)
{
static const char module[] = "TIFFLinkDirectory";
toff_t currdir, nextdir;
toff_t diroff, nextdiroff; /* 32-bit or 64-bit dir offsets */
/*
* New directory will go at end of file; if file not BigTIFF and
* size is beyond 2^32, convert to BigTIFF now.
*/
tif->tif_diroff = ((TIFFSeekFile(tif, 0, SEEK_END) + 1) & ~(toff_t) 1);
if (!isBigTIFF(tif) && isBigOff(tif->tif_diroff)) {
if (!TIFFMakeBigTIFF(tif))
return (0);
tif->tif_diroff = ((TIFFSeekFile(tif, 0, SEEK_END) + 1) & ~(toff_t) 1);
}
TIFFSetDirOff(tif,diroff,tif->tif_diroff);
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabDirOff(tif,&diroff);
/*
* Handle SubIFDs
*/
if (tif->tif_flags & TIFF_INSUBIFD) {
(void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
if (!WriteOK(tif, &diroff, TIFFDirOffLen(tif))) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Error writing SubIFD directory link (%d)",
tif->tif_name, TIFFGetErrno(tif));
return (0);
}
/*
* Advance to the next SubIFD or, if this is
* the last one configured, revert back to the
* normal directory linkage.
*/
if (--tif->tif_nsubifd)
tif->tif_subifdoff += TIFFDirOffLen(tif);
else
tif->tif_flags &= ~TIFF_INSUBIFD;
return (1);
}
/*
* First directory, overwrite offset in header.
*/
nextdir = TIFFGetHdrDirOff(tif,tif->tif_header);
if (nextdir == 0) {
TIFFSetHdrDirOff(tif,tif->tif_header, tif->tif_diroff);
if (!SeekOK(tif, 0) ||
!WriteOK(tif, &tif->tif_header, sizeof(TIFFHeader)) ) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing TIFF header (%d)", TIFFGetErrno(tif));
return (0);
}
return (1);
}
/*
* Not the first directory, search to the last and append.
*/
do {
uint64 dircount; /* 16-bit or 64-bit directory count */
if (!SeekOK(tif, nextdir) ||
!ReadOK(tif, &dircount, TIFFDirCntLen(tif))) {
TIFFErrorExt(tif->tif_clientdata, module,
"Error fetching directory count (%d)", TIFFGetErrno(tif));
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabDirCnt(tif,&dircount);
currdir = nextdir + TIFFDirCntLen(tif) + TIFFGetDirCnt(tif,dircount) * TDIREntryLen(tif);
TIFFSeekFile(tif, currdir, SEEK_SET);
if (!ReadOK(tif, &nextdiroff, TIFFDirOffLen(tif)) ) {
TIFFErrorExt(tif->tif_clientdata, module,
"Error fetching directory link (%d)", TIFFGetErrno(tif));
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabDirOff(tif,&nextdiroff);
nextdir = TIFFGetDirOff(tif,nextdiroff);
} while (nextdir != 0);
TIFFSeekFile(tif, currdir, SEEK_SET);
if (!WriteOK(tif, &diroff, TIFFDirOffLen(tif)) ) {
TIFFErrorExt(tif->tif_clientdata, module,
"Error writing directory link (%d)", TIFFGetErrno(tif));
return (0);
}
return (1);
}
static int
TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
{
static const char module[] = "TIFFFillStripPartial";
register TIFFDirectory *td = &tif->tif_dir;
tmsize_t unused_data;
uint64 read_offset;
tmsize_t cc, to_read;
/* tmsize_t bytecountm; */
if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
return 0;
/*
* Expand raw data buffer, if needed, to hold data
* strip coming from file (perhaps should set upper
* bound on the size of a buffer we'll use?).
*/
/* bytecountm=(tmsize_t) td->td_stripbytecount[strip]; */
if (read_ahead*2 > tif->tif_rawdatasize) {
assert( restart );
tif->tif_curstrip = NOSTRIP;
if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
TIFFErrorExt(tif->tif_clientdata, module,
"Data buffer too small to hold part of strip %lu",
(unsigned long) strip);
return (0);
}
if (!TIFFReadBufferSetup(tif, 0, read_ahead*2))
return (0);
}
if( restart )
{
tif->tif_rawdataloaded = 0;
tif->tif_rawdataoff = 0;
}
/*
** If we are reading more data, move any unused data to the
** start of the buffer.
*/
if( tif->tif_rawdataloaded > 0 )
unused_data = tif->tif_rawdataloaded - (tif->tif_rawcp - tif->tif_rawdata);
else
unused_data = 0;
if( unused_data > 0 )
{
assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
memmove( tif->tif_rawdata, tif->tif_rawcp, unused_data );
}
/*
** Seek to the point in the file where more data should be read.
*/
read_offset = td->td_stripoffset[strip]
+ tif->tif_rawdataoff + tif->tif_rawdataloaded;
if (!SeekOK(tif, read_offset)) {
TIFFErrorExt(tif->tif_clientdata, module,
"Seek error at scanline %lu, strip %lu",
(unsigned long) tif->tif_row, (unsigned long) strip);
return 0;
}
/*
** How much do we want to read?
*/
to_read = tif->tif_rawdatasize - unused_data;
if( (uint64) to_read > td->td_stripbytecount[strip]
- tif->tif_rawdataoff - tif->tif_rawdataloaded )
{
to_read = (tmsize_t) td->td_stripbytecount[strip]
- tif->tif_rawdataoff - tif->tif_rawdataloaded;
}
assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
cc = TIFFReadFile(tif, tif->tif_rawdata + unused_data, to_read);
if (cc != to_read) {
#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) to_read);
#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) to_read);
#endif
return 0;
}
tif->tif_rawdataoff = tif->tif_rawdataoff + tif->tif_rawdataloaded - unused_data ;
tif->tif_rawdataloaded = unused_data + to_read;
tif->tif_rawcp = tif->tif_rawdata;
if (!isFillOrder(tif, td->td_fillorder) &&
(tif->tif_flags & TIFF_NOBITREV) == 0) {
assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
TIFFReverseBits(tif->tif_rawdata + unused_data, to_read );
}
/*
** When starting a strip from the beginning we need to
** restart the decoder.
*/
if( restart )
return TIFFStartStrip(tif, strip);
else
return 1;
}
/*
* 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);
}
/*
* 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);
}
/*
* Append the data to the specified strip.
*/
static int
TIFFAppendToStrip(TIFF* tif, tstrip_t strip, tidata_t data, tsize_t cc)
{
TIFFDirectory *td = &tif->tif_dir;
static const char module[] = "TIFFAppendToStrip";
if (_TIFFGetOffset(tif, strip) == 0 || tif->tif_curoff == 0) {
/*
* No current offset, set the current strip.
*/
assert(td->td_nstrips > 0);
if (_TIFFGetOffset(tif, strip) != 0) {
/*
* Prevent overlapping of the data chunks. We need
* this to enable in place updating of the compressed
* images. Larger blocks will be moved at the end of
* the file without any optimization of the spare
* space, so such scheme is not too much effective.
*/
if (td->td_stripbytecountsorted) {
if (strip == td->td_nstrips - 1 ||
_TIFFGetOffset(tif, strip + 1) < _TIFFGetOffset(tif, strip) + cc) {
_TIFFSetOffset(tif, strip, TIFFSeekFile(tif, (toff_t)0, SEEK_END));
}
} else {
tstrip_t i;
for (i = 0; i < td->td_nstrips; i++) {
if (_TIFFGetOffset(tif, i) > _TIFFGetOffset(tif, strip) &&
_TIFFGetOffset(tif, i) < _TIFFGetOffset(tif, strip) + cc) {
_TIFFSetOffset(tif, strip, TIFFSeekFile(tif, (toff_t)0, SEEK_END));
break;
}
}
}
/* check if block will overlap offsets or bytes counts arrays */
if ((td->td_stripoffsoff &&
_TIFFGetOffset(tif, strip) < td->td_stripoffsoff &&
_TIFFGetOffset(tif, strip) + cc > td->td_stripoffsoff) ||
(td->td_stripbcsoff &&
_TIFFGetOffset(tif, strip) < td->td_stripbcsoff &&
_TIFFGetOffset(tif, strip) + cc > td->td_stripbcsoff))
_TIFFSetOffset(tif, strip, TIFFSeekFile(tif, (toff_t)0, SEEK_END));
if (!SeekOK(tif, _TIFFGetOffset(tif, strip))) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Seek error at scanline %lu",
tif->tif_name,
(unsigned long)tif->tif_row);
return (0);
}
} else
_TIFFSetOffset(tif, strip,
TIFFSeekFile(tif, (toff_t) 0, SEEK_END));
tif->tif_curoff = _TIFFGetOffset(tif, strip);
}
if (!WriteOK(tif, data, cc)) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Write error at scanline %lu (%d)",
tif->tif_name, (unsigned long) tif->tif_row, TIFFGetErrno(tif));
return (0);
}
tif->tif_curoff += cc;
_TIFFSetByteCount(tif, strip, _TIFFGetByteCount(tif, strip) + cc);
return (1);
}
static tmsize_t
TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* module)
{
TIFFDirectory *td = &tif->tif_dir;
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)
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)
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);
}
int
TIFFRewriteDirectory( TIFF *tif )
{
static const char module[] = "TIFFRewriteDirectory";
/* We don't need to do anything special if it hasn't been written. */
if( tif->tif_diroff == 0 )
return TIFFWriteDirectory( tif );
/*
** Find and zero the pointer to this directory, so that TIFFLinkDirectory
** will cause it to be added after this directories current pre-link.
*/
/* Is it the first directory in the file? */
if (tif->tif_header.tiff_diroff == tif->tif_diroff)
{
tif->tif_header.tiff_diroff = 0;
tif->tif_diroff = 0;
#if defined(__hpux) && defined(__LP64__)
#define HDROFF(f) ((toff_t)(unsigned long) &(((TIFFHeader*) 0)->f))
#else
#define HDROFF(f) ((toff_t) &(((TIFFHeader*) 0)->f))
#endif
TIFFSeekFile(tif, HDROFF(tiff_diroff), SEEK_SET);
if (!WriteOK(tif, &(tif->tif_header.tiff_diroff),
sizeof (tif->tif_diroff)))
{
TIFFError(tif->tif_name, "Error updating TIFF header");
return (0);
}
}
else
{
toff_t nextdir, off;
nextdir = tif->tif_header.tiff_diroff;
do {
uint16 dircount;
if (!SeekOK(tif, nextdir) ||
!ReadOK(tif, &dircount, sizeof (dircount))) {
TIFFError(module, "Error fetching directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
(void) TIFFSeekFile(tif,
dircount * sizeof (TIFFDirEntry), SEEK_CUR);
if (!ReadOK(tif, &nextdir, sizeof (nextdir))) {
TIFFError(module, "Error fetching directory link");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&nextdir);
} while (nextdir != tif->tif_diroff && nextdir != 0);
off = TIFFSeekFile(tif, 0, SEEK_CUR); /* get current offset */
(void) TIFFSeekFile(tif, off - (toff_t)sizeof(nextdir), SEEK_SET);
tif->tif_diroff = 0;
if (!WriteOK(tif, &(tif->tif_diroff), sizeof (nextdir))) {
TIFFError(module, "Error writing directory link");
return (0);
}
}
/*
** Now use TIFFWriteDirectory() normally.
*/
return TIFFWriteDirectory( tif );
}
static int
TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
{
static const char module[] = "TIFFFillStripPartial";
register TIFFDirectory *td = &tif->tif_dir;
tmsize_t unused_data;
uint64 read_offset;
tmsize_t to_read;
tmsize_t read_ahead_mod;
/* tmsize_t bytecountm; */
if (!_TIFFFillStriles( tif ) || !tif->tif_dir.td_stripbytecount)
return 0;
/*
* Expand raw data buffer, if needed, to hold data
* strip coming from file (perhaps should set upper
* bound on the size of a buffer we'll use?).
*/
/* bytecountm=(tmsize_t) td->td_stripbytecount[strip]; */
/* Not completely sure where the * 2 comes from, but probably for */
/* an exponentional growth strategy of tif_rawdatasize */
if( read_ahead < TIFF_TMSIZE_T_MAX / 2 )
read_ahead_mod = read_ahead * 2;
else
read_ahead_mod = read_ahead;
if (read_ahead_mod > tif->tif_rawdatasize) {
assert( restart );
tif->tif_curstrip = NOSTRIP;
if ((tif->tif_flags & TIFF_MYBUFFER) == 0) {
TIFFErrorExt(tif->tif_clientdata, module,
"Data buffer too small to hold part of strip %lu",
(unsigned long) strip);
return (0);
}
}
if( restart )
{
tif->tif_rawdataloaded = 0;
tif->tif_rawdataoff = 0;
}
/*
** If we are reading more data, move any unused data to the
** start of the buffer.
*/
if( tif->tif_rawdataloaded > 0 )
unused_data = tif->tif_rawdataloaded - (tif->tif_rawcp - tif->tif_rawdata);
else
unused_data = 0;
if( unused_data > 0 )
{
assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
memmove( tif->tif_rawdata, tif->tif_rawcp, unused_data );
}
/*
** Seek to the point in the file where more data should be read.
*/
read_offset = td->td_stripoffset[strip]
+ tif->tif_rawdataoff + tif->tif_rawdataloaded;
if (!SeekOK(tif, read_offset)) {
TIFFErrorExt(tif->tif_clientdata, module,
"Seek error at scanline %lu, strip %lu",
(unsigned long) tif->tif_row, (unsigned long) strip);
return 0;
}
/*
** How much do we want to read?
*/
if( read_ahead_mod > tif->tif_rawdatasize )
to_read = read_ahead_mod - unused_data;
else
to_read = tif->tif_rawdatasize - unused_data;
if( (uint64) to_read > td->td_stripbytecount[strip]
- tif->tif_rawdataoff - tif->tif_rawdataloaded )
{
to_read = (tmsize_t) td->td_stripbytecount[strip]
- tif->tif_rawdataoff - tif->tif_rawdataloaded;
}
assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
if( !TIFFReadAndRealloc( tif, to_read, unused_data,
1, /* is_strip */
0, /* strip_or_tile */
module) )
{
return 0;
}
tif->tif_rawdataoff = tif->tif_rawdataoff + tif->tif_rawdataloaded - unused_data ;
tif->tif_rawdataloaded = unused_data + to_read;
tif->tif_rawcc = tif->tif_rawdataloaded;
tif->tif_rawcp = tif->tif_rawdata;
if (!isFillOrder(tif, td->td_fillorder) &&
(tif->tif_flags & TIFF_NOBITREV) == 0) {
assert((tif->tif_flags&TIFF_BUFFERMMAP)==0);
TIFFReverseBits(tif->tif_rawdata + unused_data, to_read );
}
/*
** When starting a strip from the beginning we need to
** restart the decoder.
*/
if( restart )
{
#ifdef JPEG_SUPPORT
/* A bit messy since breaks the codec abstraction. Ultimately */
/* there should be a function pointer for that, but it seems */
/* only JPEG is affected. */
/* For JPEG, if there are multiple scans (can generally be known */
/* with the read_ahead used), we need to read the whole strip */
if( tif->tif_dir.td_compression==COMPRESSION_JPEG &&
(uint64)tif->tif_rawcc < td->td_stripbytecount[strip] )
{
if( TIFFJPEGIsFullStripRequired(tif) )
{
return TIFFFillStrip(tif, strip);
}
}
#endif
return TIFFStartStrip(tif, strip);
}
else
{
return 1;
}
}
/*
* Link the current directory into the
* directory chain for the file.
*/
static int
TIFFLinkDirectory(TIFF* tif)
{
static const char module[] = "TIFFLinkDirectory";
toff_t nextdir;
toff_t diroff, off;
tif->tif_diroff = (TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1;
diroff = tif->tif_diroff;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&diroff);
#if SUBIFD_SUPPORT
if (tif->tif_flags & TIFF_INSUBIFD) {
(void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFError(module,
"%s: Error writing SubIFD directory link",
tif->tif_name);
return (0);
}
/*
* Advance to the next SubIFD or, if this is
* the last one configured, revert back to the
* normal directory linkage.
*/
if (--tif->tif_nsubifd)
tif->tif_subifdoff += sizeof (diroff);
else
tif->tif_flags &= ~TIFF_INSUBIFD;
return (1);
}
#endif
if (tif->tif_header.tiff_diroff == 0) {
/*
* First directory, overwrite offset in header.
*/
tif->tif_header.tiff_diroff = tif->tif_diroff;
#define HDROFF(f) ((toff_t) &(((TIFFHeader*) 0)->f))
(void) TIFFSeekFile(tif, HDROFF(tiff_diroff), SEEK_SET);
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFError(tif->tif_name, "Error writing TIFF header");
return (0);
}
return (1);
}
/*
* Not the first directory, search to the last and append.
*/
nextdir = tif->tif_header.tiff_diroff;
do {
uint16 dircount;
if (!SeekOK(tif, nextdir) ||
!ReadOK(tif, &dircount, sizeof (dircount))) {
TIFFError(module, "Error fetching directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
(void) TIFFSeekFile(tif,
dircount * sizeof (TIFFDirEntry), SEEK_CUR);
if (!ReadOK(tif, &nextdir, sizeof (nextdir))) {
TIFFError(module, "Error fetching directory link");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&nextdir);
} while (nextdir != 0);
off = TIFFSeekFile(tif, 0, SEEK_CUR); /* get current offset */
(void) TIFFSeekFile(tif, off - (toff_t)sizeof(nextdir), SEEK_SET);
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFError(module, "Error writing directory link");
return (0);
}
return (1);
}
/*
* Link the current directory into the
* directory chain for the file.
*/
static int
TIFFLinkDirectory(TIFF* tif)
{
static const char module[] = "TIFFLinkDirectory";
uint32 nextdir;
uint32 diroff;
tif->tif_diroff = (TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1;
diroff = (uint32) tif->tif_diroff;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&diroff);
#if SUBIFD_SUPPORT
if (tif->tif_flags & TIFF_INSUBIFD) {
(void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Error writing SubIFD directory link",
tif->tif_name);
return (0);
}
/*
* Advance to the next SubIFD or, if this is
* the last one configured, revert back to the
* normal directory linkage.
*/
if (--tif->tif_nsubifd)
tif->tif_subifdoff += sizeof (diroff);
else
tif->tif_flags &= ~TIFF_INSUBIFD;
return (1);
}
#endif
if (tif->tif_header.tiff_diroff == 0) {
/*
* First directory, overwrite offset in header.
*/
tif->tif_header.tiff_diroff = (uint32) tif->tif_diroff;
#define HDROFF(f) ((toff_t) &(((TIFFHeader*) 0)->f))
(void) TIFFSeekFile(tif, HDROFF(tiff_diroff), SEEK_SET);
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing TIFF header");
return (0);
}
return (1);
}
/*
* Not the first directory, search to the last and append.
*/
nextdir = tif->tif_header.tiff_diroff;
#if defined(__INTEL_COMPILER) && 1 /* VDM auto patch */
# pragma ivdep
# pragma swp
# pragma unroll
# pragma prefetch
# if 0
# pragma simd noassert
# endif
#endif /* VDM auto patch */
do {
uint16 dircount;
if (!SeekOK(tif, nextdir) ||
!ReadOK(tif, &dircount, sizeof (dircount))) {
TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
(void) TIFFSeekFile(tif,
dircount * sizeof (TIFFDirEntry), SEEK_CUR);
if (!ReadOK(tif, &nextdir, sizeof (nextdir))) {
TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory link");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&nextdir);
} while (nextdir != 0);
(void) TIFFSeekFile(tif, -(toff_t) sizeof (nextdir), SEEK_CUR);
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
return (0);
}
return (1);
}