From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: Re: YUV Framebuffer Date: Wed, 17 Oct 2007 08:57:32 +0200 (CEST) Message-ID: References: <27AAC353AE72C840926448157F375E72012B59B1@NAEX17.na.qualcomm.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1Ii2qW-0005SK-Ls for linux-fbdev-devel@lists.sourceforge.net; Tue, 16 Oct 2007 23:57:38 -0700 Received: from hoboe1bl1.telenet-ops.be ([195.130.137.72]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1Ii2qV-0006mS-AQ for linux-fbdev-devel@lists.sourceforge.net; Tue, 16 Oct 2007 23:57:36 -0700 In-Reply-To: <27AAC353AE72C840926448157F375E72012B59B1@NAEX17.na.qualcomm.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: "Rhee, C. Joon" Cc: Linux Frame Buffer Device Development On Tue, 16 Oct 2007, Rhee, C. Joon wrote: > Is it possible to create framebuffer color format in YUV (eg. YUV422 > interleaved) and expose it through /dev/fb? > > What would be fb_info type? What do you mean with `interleaved'? Even and odd frames are separate (interlace)? For YUV422, you have to add a new visual type. A long time ago, I used this for a non-public test project: #define FB_TYPE_PACKED_PIXELS_LACED 5 /* Interlaced Packed Pixels */ #define FB_TYPE_PACKED_PIXELS_4AREAS 6 /* 4 areas of Packed Pixels */ #define FB_VISUAL_YCBCR422 6 /* YCbCr 4:2:2 */ #define FB_VISUAL_YCBCR420 7 /* YCbCr 4:2:0 */ > And how about about fb_var_screeninfo.green/blue/red offset? Just assume red, green, and blue mean Y, U, and V? Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/