LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
March 2005
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
Thread
2005.03.05 19:45 "Re: Bogus StripByteCounts field", by Bob Friesenhahn
On Sat, 5 Mar 2005, Frank Warmerdam wrote:
>
> You might look into TIFFWriteCheck(). I call it like this
> but I think it is only needed when I haven't even started
> writing any imagery yet.
>
> TIFFWriteCheck( hTIFF, TIFFIsTiled(hTIFF),
> "GTiffDataset::Crystalize");
It seems that TIFFWriteCheck() is called for free as the first step of
TIFFWriteScanline:
#define WRITECHECKSTRIPS(tif, module) \
(((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),0,module))
int
TIFFWriteScanline(TIFF* tif, tdata_t buf, uint32 row, tsample_t
sample)
{
static const char module[] = "TIFFWriteScanline";
register TIFFDirectory *td;
int status, imagegrew = 0;
tstrip_t strip;
if (!WRITECHECKSTRIPS(tif, module))
return (-1);
Of course the data is compressed so it may be that not everything is
known until the last scanline is written.
Bob
======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/