* [ECOS] zlib_uncompress usage(more info)
@ 2004-05-06 6:56 bhanuprakash kandimalla
2004-05-06 14:37 ` John Newlin
2004-05-07 7:10 ` [ECOS] Unsubscri be Charlie
0 siblings, 2 replies; 6+ messages in thread
From: bhanuprakash kandimalla @ 2004-05-06 6:56 UTC (permalink / raw)
To: ecos-discuss
Just want to put some more info to my previous mail.
Hello Ecos World:
Did any one use the zlib uncompress function. This
funtion has the following structure:uncompress(dest,
dest_len, source, source_len). Is there anylimit on
the souce_len to use. I have a compressed image stored
in boot flash and want to uncompress onto RAM. The
source file is of 177768 bytes. Some how when I use
this function, it always returns Z_MEM_ERROR. (I used
the Cygwin tool to create the compressed image
(gzip)).
>>This Z_MEM_ERROR is returning from inflate_blocks()
function. What does this mean...
Can someone suggest me where I am doing wrong. I
appreciate any help.
Thanks in advance
__________________________________
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ECOS] zlib_uncompress usage(more info)
2004-05-06 6:56 [ECOS] zlib_uncompress usage(more info) bhanuprakash kandimalla
@ 2004-05-06 14:37 ` John Newlin
2004-05-06 14:50 ` Thomas Koeller
2004-05-07 7:10 ` [ECOS] Unsubscri be Charlie
1 sibling, 1 reply; 6+ messages in thread
From: John Newlin @ 2004-05-06 14:37 UTC (permalink / raw)
To: bhanuprakash kandimalla, ecos-discuss
Most likely you need to skip around the gzip header (or strip the header
prior to programming the image into flash)
If you have the zlib code, look in gzio.c for the function check_header
as an example
-john
bhanuprakash kandimalla wrote:
>Just want to put some more info to my previous mail.
>
>Hello Ecos World:
>Did any one use the zlib uncompress function. This
>funtion has the following structure:uncompress(dest,
>dest_len, source, source_len). Is there anylimit on
>the souce_len to use. I have a compressed image stored
>in boot flash and want to uncompress onto RAM. The
>source file is of 177768 bytes. Some how when I use
>this function, it always returns Z_MEM_ERROR. (I used
>the Cygwin tool to create the compressed image
>(gzip)).
>
>
>>>This Z_MEM_ERROR is returning from inflate_blocks()
>>>
>function. What does this mean...
>
>Can someone suggest me where I am doing wrong. I
>appreciate any help.
>Thanks in advance
>
>
>
>
>__________________________________
>Do you Yahoo!?
>Win a $20,000 Career Makeover at Yahoo! HotJobs
>http://hotjobs.sweepstakes.yahoo.com/careermakeover
>
>
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ECOS] zlib_uncompress usage(more info)
2004-05-06 14:37 ` John Newlin
@ 2004-05-06 14:50 ` Thomas Koeller
2004-05-06 14:56 ` Gary Thomas
0 siblings, 1 reply; 6+ messages in thread
From: Thomas Koeller @ 2004-05-06 14:50 UTC (permalink / raw)
To: ecos-discuss
Zlib needs _huge_ buffers in RAM. A description of how to
estimate the amount of ram required can be found in
packages/services/compress/zlib/current/include/zconf.h.
tk
John Newlin wrote:
> Most likely you need to skip around the gzip header (or strip the header
> prior to programming the image into flash)
>
> If you have the zlib code, look in gzio.c for the function check_header
> as an example
>
> -john
>
> bhanuprakash kandimalla wrote:
> >Just want to put some more info to my previous mail.
> >
> >Hello Ecos World:
> >Did any one use the zlib uncompress function. This
> >funtion has the following structure:uncompress(dest,
> >dest_len, source, source_len). Is there anylimit on
> >the souce_len to use. I have a compressed image stored
> >in boot flash and want to uncompress onto RAM. The
> >source file is of 177768 bytes. Some how when I use
> >this function, it always returns Z_MEM_ERROR. (I used
> >the Cygwin tool to create the compressed image
> >(gzip)).
> >
> >>>This Z_MEM_ERROR is returning from inflate_blocks()
> >
> >function. What does this mean...
> >
> >Can someone suggest me where I am doing wrong. I
> >appreciate any help.
> >Thanks in advance
> >
> >
> >
> >
> >__________________________________
> >Do you Yahoo!?
> >Win a $20,000 Career Makeover at Yahoo! HotJobs
> >http://hotjobs.sweepstakes.yahoo.com/careermakeover
--
--------------------------------------------------
Thomas Koeller, Software Development
Basler Vision Technologies
thomas dot koeller at baslerweb dot com
http://www.baslerweb.com
==============================
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* Re: [ECOS] zlib_uncompress usage(more info)
2004-05-06 14:50 ` Thomas Koeller
@ 2004-05-06 14:56 ` Gary Thomas
0 siblings, 0 replies; 6+ messages in thread
From: Gary Thomas @ 2004-05-06 14:56 UTC (permalink / raw)
To: Thomas Koeller; +Cc: eCos Discussion
On Thu, 2004-05-06 at 08:52, Thomas Koeller wrote:
> Zlib needs _huge_ buffers in RAM. A description of how to
> estimate the amount of ram required can be found in
> packages/services/compress/zlib/current/include/zconf.h.
Or look at how RedBoot does it.
>
> tk
>
>
> John Newlin wrote:
> > Most likely you need to skip around the gzip header (or strip the header
> > prior to programming the image into flash)
> >
> > If you have the zlib code, look in gzio.c for the function check_header
> > as an example
> >
> > -john
> >
> > bhanuprakash kandimalla wrote:
> > >Just want to put some more info to my previous mail.
> > >
> > >Hello Ecos World:
> > >Did any one use the zlib uncompress function. This
> > >funtion has the following structure:uncompress(dest,
> > >dest_len, source, source_len). Is there anylimit on
> > >the souce_len to use. I have a compressed image stored
> > >in boot flash and want to uncompress onto RAM. The
> > >source file is of 177768 bytes. Some how when I use
> > >this function, it always returns Z_MEM_ERROR. (I used
> > >the Cygwin tool to create the compressed image
> > >(gzip)).
> > >
> > >>>This Z_MEM_ERROR is returning from inflate_blocks()
> > >
> > >function. What does this mean...
> > >
> > >Can someone suggest me where I am doing wrong. I
> > >appreciate any help.
> > >Thanks in advance
> > >
> > >
> > >
> > >
> > >__________________________________
> > >Do you Yahoo!?
> > >Win a $20,000 Career Makeover at Yahoo! HotJobs
> > >http://hotjobs.sweepstakes.yahoo.com/careermakeover
>
> --
> --------------------------------------------------
>
> Thomas Koeller, Software Development
> Basler Vision Technologies
>
> thomas dot koeller at baslerweb dot com
> http://www.baslerweb.com
>
> ==============================
--
Gary Thomas <gary@mlbassoc.com>
MLB Associates
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* [ECOS] Unsubscri be
2004-05-06 6:56 [ECOS] zlib_uncompress usage(more info) bhanuprakash kandimalla
2004-05-06 14:37 ` John Newlin
@ 2004-05-07 7:10 ` Charlie
2004-05-07 7:18 ` William Martin
1 sibling, 1 reply; 6+ messages in thread
From: Charlie @ 2004-05-07 7:10 UTC (permalink / raw)
To: ecos-discuss
How do I unsubscribe to this list?
Charlie
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* Re: [ECOS] Unsubscri be
2004-05-07 7:10 ` [ECOS] Unsubscri be Charlie
@ 2004-05-07 7:18 ` William Martin
0 siblings, 0 replies; 6+ messages in thread
From: William Martin @ 2004-05-07 7:18 UTC (permalink / raw)
To: Charlie, ecos-discuss
Amazingly enough, the link at the bottom of your email----> "Before posting,
please read the FAQ:..." includes a very useful link.
Once that page has opened, select "Mailing Lists" on the left side and read
that page. There will be a place to put an email in and the option to
subscribe/unsub. This posting is to ecos-discuss, thus select that option
from the combo box.
-WM
----- Original Message -----
From: "Charlie" <techj@inspire.net.nz>
To: <ecos-discuss@sources.redhat.com>
Sent: Friday, May 07, 2004 1:02 AM
Subject: [ECOS] Unsubscri be
> How do I unsubscribe to this list?
>
>
> Charlie
>
>
> --
> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
>
>
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2004-05-06 6:56 [ECOS] zlib_uncompress usage(more info) bhanuprakash kandimalla
2004-05-06 14:37 ` John Newlin
2004-05-06 14:50 ` Thomas Koeller
2004-05-06 14:56 ` Gary Thomas
2004-05-07 7:10 ` [ECOS] Unsubscri be Charlie
2004-05-07 7:18 ` William Martin
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