LibTiff Mailing List

Good day eveyone,

I am currently coding an interface to Libtiff which would convert a strip of
the tiff image to RGB format.  I am using the TIFFReadRGBAStrip API.  This
works perfectly fine until I find images with only 1 strip and very, very
large stripbytecounts (like 4mb or 6mb).  I would then have to keep a buffer
with this size (4 or 6 mb)since the API needs the whole strip to be passed
to it.  This is very hard for me since we only have a limited amount of
memory.

Is there another way to parse the image??  Im looking for an interface that
would accept a smaller data size than the strip, if the strip is too large. 

I also found out about ScanLine but this is not a very reliable interface
since it only works if the RowsPerStrip is equal to 1 and if there is no
compression.  My understanding is correct, am I right?  

Hope somebody can get me out of my misery,  :)

Thanks a lot,
Katrina


AWARE [SYSTEMS]		Imaging expertise for the Delphi developer
		TIFF and LibTiff Mailing List Archive
	LibTiff Mailing List TIFF and LibTiff Mailing List Archive June 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 2005.06.28 09:09 "Simpler interface than strip-oriented interface", by Katrina Maramba 2005.06.28 14:20 "Re: Simpler interface than strip-oriented interface", by Bob Friesenhahn 2005.06.28 09:09 "Simpler interface than strip-oriented interface", by Katrina Maramba Good day eveyone, I am currently coding an interface to Libtiff which would convert a strip of the tiff image to RGB format. I am using the TIFFReadRGBAStrip API. This works perfectly fine until I find images with only 1 strip and very, very large stripbytecounts (like 4mb or 6mb). I would then have to keep a buffer with this size (4 or 6 mb)since the API needs the whole strip to be passed to it. This is very hard for me since we only have a limited amount of memory. Is there another way to parse the image?? Im looking for an interface that would accept a smaller data size than the strip, if the strip is too large. I also found out about ScanLine but this is not a very reliable interface since it only works if the RowsPerStrip is equal to 1 and if there is no compression. My understanding is correct, am I right? Hope somebody can get me out of my misery, :) Thanks a lot, Katrina

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2005.06.28 09:09 "Simpler interface than strip-oriented interface", by Katrina Maramba