LibTiff Mailing List

Gentlemen;

I have a program that merges CCITT T.6 TIFFs (little B/W images used for
illustrations in documents) into a single image with stripe separations.  It
uses libTIFF 3.7.1 and currently generates an output file.  I need to put
the CCITT T.6 TIFF file into an image database, so currently I must:
1.  for each document stored in a separate directory, retrieve all its TIFFs
from files to be merged
2.  merge all TIFFs retrieved into a single contiguous TIFF with separator
stripes
3.  store the single contiguous TIFF to a file
4.  retrieve the single contiguous TIFF from file in a file stream
5.  load the file stream into the database

In order to significantly reduce the disk chugging and speed up the process,
it would help if I knew how to use libTIFF to change this process to:
1.  for each document stored in a separate directory, retrieve all its TIFFs
from files to be merged
2.  merge all TIFFs retrieved into a single contiguous TIFF with separator
stripes
3.  store the single contiguous TIFF to a memory buffer or memory stream
(currently the BCB5 TMemoryStream is what I need if this option is chosen)
(4.  put the memory buffer into a memory stream)
5.  load the memory stream into the database

Based upon reading the archives, I expect direct load into a TMemoryStream
is a little specific to ask of libTIFF, so my hope is someone can tell me
how to do an encoded save of a tiff to a memory buffer instead of a file.  I
have found tif_stream.cpp, but no good examples of how to use these
functions that seem to hold such great promise.

Many thanks in advance.

Roger Watkins
RogerQuillDisc@insightbb.com


AWARE [SYSTEMS]		Imaging expertise for the Delphi developer
		TIFF and LibTiff Mailing List Archive
	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 2005.03.15 17:56 "Need to write CCITT T.6 encoded TIFF file data directly to memory buffer", by Roger Watkins 2005.03.15 18:09 "Re: Need to write CCITT T.6 encoded TIFF file data directly tomemory buffer", by Joris Van Damme 2005.03.16 18:08 "Re: Need to write CCITT T.6 encoded TIFF file data directly tomemory buffer", by Roger Watkins 2005.03.16 19:38 "Re: Need to write CCITT T.6 encoded TIFF file data directlytomemory buffer", by Joris Van Damme 2005.03.16 22:04 "Re: Need to write CCITT T.6 encoded TIFF file data directlytomemory buffer", by Roger Watkins 2005.03.16 22:24 "Re: Need to write CCITT T.6 encoded TIFF file datadirectlytomemory buffer", by Joris Van Damme 2005.03.17 02:35 "Re: Need to write CCITT T.6 encoded TIFF file datadirectlytomemory buffer", by Roger Watkins 2005.03.17 03:10 "Re: Need to write CCITT T.6 encoded TIFF filedatadirectlytomemory buffer", by Joris Van Damme 2005.03.17 23:57 "Re: Need to write CCITT T.6 encoded TIFF file datadirectlytomemory buffer", by Roger Watkins 2005.03.15 17:56 "Need to write CCITT T.6 encoded TIFF file data directly to memory buffer", by Roger Watkins Gentlemen; I have a program that merges CCITT T.6 TIFFs (little B/W images used for illustrations in documents) into a single image with stripe separations. It uses libTIFF 3.7.1 and currently generates an output file. I need to put the CCITT T.6 TIFF file into an image database, so currently I must: 1. for each document stored in a separate directory, retrieve all its TIFFs from files to be merged 2. merge all TIFFs retrieved into a single contiguous TIFF with separator stripes 3. store the single contiguous TIFF to a file 4. retrieve the single contiguous TIFF from file in a file stream 5. load the file stream into the database In order to significantly reduce the disk chugging and speed up the process, it would help if I knew how to use libTIFF to change this process to: 1. for each document stored in a separate directory, retrieve all its TIFFs from files to be merged 2. merge all TIFFs retrieved into a single contiguous TIFF with separator stripes 3. store the single contiguous TIFF to a memory buffer or memory stream (currently the BCB5 TMemoryStream is what I need if this option is chosen) (4. put the memory buffer into a memory stream) 5. load the memory stream into the database Based upon reading the archives, I expect direct load into a TMemoryStream is a little specific to ask of libTIFF, so my hope is someone can tell me how to do an encoded save of a tiff to a memory buffer instead of a file. I have found tif_stream.cpp, but no good examples of how to use these functions that seem to hold such great promise. Many thanks in advance. Roger Watkins RogerQuillDisc@insightbb.com

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2005.03.15 17:56 "Need to write CCITT T.6 encoded TIFF file data directly to memory buffer", by Roger Watkins