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Re: [pwc] why cann't I change the palette property by V4L on a pwc drive

To: Philips Webcam Linux Driver <>
Subject: Re: [pwc] why cann't I change the palette property by V4L on a pwc driver?
From: Sandy McArthur <>
Date: Fri, 19 Aug 2005 11:53:47 -0400
The pwc device only supports YUV20. The kernel devs do not want
pallet conversion to take place in the kernel. You need to do that in your software.

On Aug 19, 2005, at 1:45 AM, æ æ wrote:


Hello,everybody. Recently I taked part in a project which required
to get video from Logitec Pro4000 web camera on Linux platform. I
finished it successfully by using V4L API.However, when I try to
change the palette property from YUV420 to RGB24, the VIDIOCSWIN
ioctl return -1.I checked my program and find nothing wrong. I used pwc-9.0.2 as my web camera driver. Does it mean that the drive
don't support changing property? Or should I do some thing before
change the palette property to let it take effect?

It is my great pleasure to hear from you.
Jules Shen


--
Sandy McArthur

"He who dares not offend cannot be honest."
- Thomas Paine


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