From: Damien Lespiau <damien.lespiau@intel.com>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: "Gohad, Tushar" <tushar.gohad@intel.com>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>
Subject: Re: AVI infoframes: default aspect ratio/VIC for CEA modes
Date: Thu, 21 Nov 2013 17:28:35 +0000 [thread overview]
Message-ID: <20131121172835.GC26262@strange.amr.corp.intel.com> (raw)
In-Reply-To: <20131121171945.GB10036@intel.com>
On Thu, Nov 21, 2013 at 07:19:45PM +0200, Ville Syrjälä wrote:
> > > It seems natural to extend those flags to describe the picture aspect ratio (that
> > > why dri-devel is in Cc., touching core DRM).
> >
> > To start with we can use a single bit in drm_display_mode->flags to distinguish 16:9 vs 4:3.
>
> I must admit I haven't really looked into the matter, but do we actually
> need any mode bits? Would it be enoguh to just have a property that
> allows the user to specify the picture aspect ratio?
Well, that's a good question! the picture aspect ratio is attached to
modes in CEA-861, but it could be a good idea to have an orthogonal
picture a-r property on the crtc.
Not quite sure at this point, needs a bit more understanding of the
problem.
--
Damien
prev parent reply other threads:[~2013-11-21 17:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-20 21:48 AVI infoframes: default aspect ratio/VIC for CEA modes Gohad, Tushar
2013-11-20 22:11 ` Damien Lespiau
2013-11-20 22:20 ` Damien Lespiau
2013-11-20 23:45 ` Gohad, Tushar
2013-11-21 0:37 ` Damien Lespiau
2013-11-21 2:48 ` [Intel-gfx] " Gohad, Tushar
2013-11-21 17:19 ` Ville Syrjälä
2013-11-21 17:28 ` Damien Lespiau [this message]
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