lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 16 Dec 2014 09:15:36 -0500
From:	Nicolas Dufresne <nicolas.dufresne@...labora.com>
To:	Philipp Zabel <p.zabel@...gutronix.de>,
	Jean-Michel Hautbois <jean-michel.hautbois@...alys.com>
CC:	Steve Longerbeam <slongerbeam@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Frédéric Sureau <frederic.sureau@...alys.com>,
	Fabio Estevam <fabio.estevam@...escale.com>
Subject: Re: i.MX6 CSC and scaler


Le 2014-12-16 08:30, Philipp Zabel a écrit :
> For the IPU IC mem2mem scaler/CSC, v4l2transform with scaling capability
> would be the perfect fit
Thanks you for clarifying. Jean-Michel, are you going to work on this ? 
If so, feel free to contact me directly for pointers. You'll find me as 
stormer on IRC freenode on both #v4l2 and #gstreamer.

What would need to be done:
a) Import scaler negotiation code from videoscale element, and merge it 
into v4l2transform negotiation. It is likely that wtay (Wim Tayman) have 
some code already for you, has on the SW side he is currently working on 
merging videoscale and videoconvert together as it's faster this way.
b) Complete the handling of G_CROP (if required add G_SELECTION). Most 
HW scaler will allocate aligned buffers, but can reach a 1 or 2 pixels 
precision through CROP or SELECTION.

cheers,
Nicolas
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists