On Tue, Jun 18, 2013 at 11:10:30AM +0100, Andy Furniss wrote: > ville.syrjala at linux.intel.com wrote: > > From: Ville Syrj?l? <ville.syrjala at linux.intel.com> > > > > Having both modes can be beneficial for video playback cases. If you can > > match the video framerate exactly, and the audio and video clocks come > > from the same source, you should be able to avoid dropped/repeated > > frames without expensive operations such as resampling the audio to > > match video output rate. > > > > Rather than add both variants based on the CEA extension short video > > descriptors in do_cea_modes(), add only one variant there. Once all > > the EDID has been fully probed, do a loop over the entire probed mode > > list, during which we add the other variants for all modes that match > > CEA modes. This allows us to match modes that didn't come via the CEA > > short video descriptors. For example one Samsung TV here doesn't have > > the 640x480-60 mode as a SVD, but instead it's specified via a detailed > > timing descriptor. > > > > Signed-off-by: Ville Syrj?l? <ville.syrjala at linux.intel.com> > > --- > > A few people requested this. Originally I was a bit opposed to it, but > > when I thought about it a bit more I figured if the audio and video > > clocks come from the same source (or happen to be close enough w/o > > significant drift), this could provide a better A/V sync w/o resampling > > tricks. > > I see this has gone in now, one thing I notice is that xorg/apps/xrandr > only prints Hz to 1dp so you can't see which mode is which for the 24p > and 30i cases. > > Maybe someone reading has commit access for xorg?
Not sure if you noticed but I posted some relevant xrandr patches to xorg-devel. Unfortunately I got no response, and I've been too lazy to figure out who I need to pester. -- Ville Syrj?l? Intel OTC
