[mythtv] Android OpenGL Performance

[Peter Bennett]

In the latest master, Android OpenGL performance is now unacceptable.
I notice the UYVY option has been removed from settings. Does this mean 
UYVY is now the default?

In most cases OpenGL is not able to keep up with playback and frames are 
being dropped, where before it was keeping up successfully.

NVidia Shield
With default setting (YV12 unchecked) - dropping frames on 1080i and 
720p content
  - SD (480i) picture jumps up and down in a most disconcerting fashion 
(both Linear Blend and kernel deint)
With YV12 checked - 1080i is OK but dropping frames on 720p content
  - SD (480i) picture is OK with linear blend

Amazon Fire 4K
With default setting (YV12 unchecked) - dropping frames on 1080i and 
720p content
  - SD (480i) picture jumps up and down in a most disconcerting fashion
With YV12 checked - dropping frames with 1080i, 720p is OK
  - SD (480i) picture is OK
Fire 4K still needs "extra stage" checked otherwise sometimes the screen 
is blank.

Peter