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From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: "Wu, Josh" <Josh.wu@atmel.com>, linux-media@vger.kernel.org
Subject: Re: Using atmel-isi for direct output on framebuffer ?
Date: Fri, 2 Sep 2011 13:51:58 +0200	[thread overview]
Message-ID: <20110902135158.41e9c84d@skate> (raw)
In-Reply-To: <201109021342.03721.laurent.pinchart@ideasonboard.com>

Hi Laurent,

Le Fri, 2 Sep 2011 13:42:03 +0200,
Laurent Pinchart <laurent.pinchart@ideasonboard.com> a écrit :

> I'm not sure if V4L2_CAP_VIDEO_OVERLAY is a good solution for this.
> This driver type (or rather buffer type) was used on old systems to
> capture directly to the PCI graphics card memory. Nowadays I would
> advice using USERPTR with framebuffer memory.

Could you give a short summary of how the USERPTR mechanism works?

Thanks,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

  reply	other threads:[~2011-09-02 11:52 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-01 15:05 Using atmel-isi for direct output on framebuffer ? Thomas Petazzoni
2011-09-01 18:45 ` Guennadi Liakhovetski
2011-09-02  9:08 ` Wu, Josh
2011-09-02  9:18   ` Thomas Petazzoni
2011-09-02  9:33     ` Sylwester Nawrocki
2011-09-02 11:42     ` Laurent Pinchart
2011-09-02 11:51       ` Thomas Petazzoni [this message]
2011-09-02 12:00         ` Laurent Pinchart

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