From: Ondrej Zary <linux@rainbow-software.org>
To: linux-media@vger.kernel.org
Subject: CMYG support in V4L2
Date: Mon, 29 Dec 2014 14:33:58 +0100 [thread overview]
Message-ID: <201412291433.58677.linux@rainbow-software.org> (raw)
Hello,
I'm working on an old driver called "qcamvc" for Connectix QuickCam VC webcams
(parallel port and USB models), found here:
http://sourceforge.net/projects/usb-quickcam-vc/
Luckily, it was modified last year to compile with 3.x kernels.
After trivial modification (mfr and model), it works with parallel-port
QuickCam Pro (sort of - only at 320x240 and with vertical lines on the left
and blank part at the top). I don't have QuickCam VC (yet).
After removing a lot of code (it's now around 1200 [main] + 660 [parallel] +
320 [usb] lines), one problem still remains: in-kernel colour conversion with
software contrast, hue, saturation and gamma.
According to comments in the code, the camera sensor seems to have a CMYG
filter, like no other linux-supported camera. So the proper way to support
these cameras is to introduce a new pixel format, move the conversion to
libv4lconvert and remove all controls not provided by hardware?
--
Ondrej Zary
next reply other threads:[~2014-12-29 13:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-29 13:33 Ondrej Zary [this message]
2015-01-12 15:22 ` CMYG support in V4L2 Hans Verkuil
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