[Spca50x-devs] Re: your patch for PAC207

["Jindra Fucik" <fulda@xxxxxxxxx>]

Hi!

Part in PR are not complete patch, only pointing to main problem.

Full patch you can download here: 
http://logout.sh.cvut.cz/~fulda/jfu_spca5xx-20060301_pac207.patch.gz

If you need to know where problem is:
- camera sends packets of data (1023 bites or less)
- driver try to find "frame begin" sequence
- if found, finish "current frame" and discards end of packet.
- new frame begins at the begin of new packet (<-- this is wrong)

begin of frame is point of problem - frame starts not at next frame, but at 
"frame begin" sequence

My patch is not so good, What I do is:
- camera sends packets of data (1023 bites or less)
- driver try to find "frame begin" sequence
- if found, RE-START "current frame" and discard begin of packet
- reading frame to next "frame begin" sequence
- if found, finish "current frame" and discards end of packet.

It mean, I'm discarding every odd frames - this is hack, not fix.

I have one "test computer" with freebsd, if you want, I can give you acces 
to this, here is pac207 cammera.

Jindra

----- Original Message ----- 
From: "Mizuno Takafumi" <taka-qce@xxxxxxx>
To: <fulda@xxxxxxxxx>
Cc: <taka-qce@xxxxxxx>
Sent: Monday, May 22, 2006 5:26 PM
Subject: your patch for PAC207


> Hi!
> I found your patch at the following;
>  http://www.freebsd.org/cgi/query-pr.cgi?pr=97302
> The problem with PAC207 is not only FreeBSD.
> I have known this problem by other user, but I have no idea.
>
> Could I apply your patch to my patchset ?
> and Please try the following, let me know the results on your webcam.
>    http://www.medias.ne.jp/~takam/bsd/spca5xx-bsd-0.6a.patch.gz
>
> Excuse my bad English.
> Thanks a lot.
>
>  <---- Takafumi Mizuno ----- ------- - -    -  -- -    --  -  -
> <--- taka-qce@xxxxxxx / taka@xxxxxxxxxxxxxxxx ----  --  -  -
> <-- * A blessed luckstone * ---- -------- - --  -- ---  -  - - -



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