LibTiff Mailing List

I make switcing between coder and decoder mode in codec.
Seems it's work.

But now I'm not sure that it is right way to solve this problem.
Maybe better solution is not swith befor coder and decoder mode, but
keep it separated, just coder and decoder?

So I don't make a report in bugreport, just make attach to this
letter. If you found useful this way you may use patch.

Also some problem with JPEG coder.
First it some strange string in JPEG coder (you may see it in patch)
and I not sure that it should be in this place.

Second, coder should be reviewed. I think it not correct use JPEG
parameters that already contains in TIFF directory.
I not understand JPEG compression details, but.
Wnen coder is initialized it use pseudo tags too init. (build JPEG
tables maybe), but directory may already contain JPEG tables, or other
JPEG parameters.
By the simple world, I expect that JPEG coder initializated with
existing parameters, not pseudo tags.


AWARE [SYSTEMS]		Imaging expertise for the Delphi developer
		TIFF and LibTiff Mailing List Archive
	LibTiff Mailing List TIFF and LibTiff Mailing List Archive December 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 2005.12.13 18:20 "read and write image with same TIFF handle", by Eugene Shebeko 2005.12.13 21:39 "Re: read and write image with same TIFF handle", by Andrey Kiselev 2005.12.13 21:55 "Re: read and write image with same TIFF handle", by Frank Warmerdam 2005.12.15 09:11 "Re: read and write image with same TIFF handle", by Eugene Shebeko 2005.12.29 23:18 "Re: read and write image with same TIFF handle", by Andrey Kiselev 2005.12.15 09:11 "Re: read and write image with same TIFF handle", by Eugene Shebeko I make switcing between coder and decoder mode in codec. Seems it's work. But now I'm not sure that it is right way to solve this problem. Maybe better solution is not swith befor coder and decoder mode, but keep it separated, just coder and decoder? So I don't make a report in bugreport, just make attach to this letter. If you found useful this way you may use patch. Also some problem with JPEG coder. First it some strange string in JPEG coder (you may see it in patch) and I not sure that it should be in this place. Second, coder should be reviewed. I think it not correct use JPEG parameters that already contains in TIFF directory. I not understand JPEG compression details, but. Wnen coder is initialized it use pseudo tags too init. (build JPEG tables maybe), but directory may already contain JPEG tables, or other JPEG parameters. By the simple world, I expect that JPEG coder initializated with existing parameters, not pseudo tags.

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2005.12.15 09:11 "Re: read and write image with same TIFF handle", by Eugene Shebeko