Re: Re(2): Quickcam device driver for Linux

• To: Mike Sharkey <msharkey@softarc.com>
• Subject: Re: Re(2): Quickcam device driver for Linux
• From: Alex Belits <abelits@phobos.illtel.denver.co.us>
• Date: Fri, 13 Jun 1997 14:08:17 -0700 (PDT)
• cc: bertsch@morgane.univ-fcomte.fr, quickcam-drivers@crynwr.com
• Delivered-To: quickcam-drivers@crynwr.com
• In-Reply-To: <fc.000086e9007e5239ee6b2800e2780fd0.7e5335@softarc.com>

On Fri, 13 Jun 1997, Mike Sharkey wrote:

> In fact, it would generally be a bad idea to do image conversion within the
> kernel.  Kernel drivers should generally be short and sweet, just do the
> I/O and get out. Let the user space appsl do the high level stuff, in user
> space, you have way more resource to play with, and you don't have to worry
> about corrupting the kernel and destabalizing the entire system with buggy
> code, etc...  
> 
> Why not just write a user space app with all the features you mention that
> just polls the existing QuickCam driver and spews out the appropriately
> converted images?

  IMHO kernel driver is unnecessary -- quickcam is a polling-only device
with no IRQ or DMA support, and access to it requires rather large buffers
that should be filled fast by doing long polling loop.

--
Alex

• Re: Re(2): Quickcam device driver for Linux
• From: William Young <catbert@ding.mindspring.com>

• Re(2): Quickcam device driver for Linux
• From: msharkey@softarc.com (Mike Sharkey)

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