Create new video driver API that has a per-instance context structure
and does not rely on keeping status in global or static variables.
Existing drivers are not yet converted to this API; instead there is a
wrapper which translates calls to them.
In the new API, an old API call vo_functions->xyz(args) is generally
replaced by vo_xyz(vo_instance, args).
The changes to keep the vesa, dxr2 and xover drivers compiling have
not been tested.
-vo vesa:lvo:drv_name
(for example -vo vesa:lvo:/dev/radeon_vid or -vo vesa:lvo:/dev/mga_vid)
Note: You don't need to have graphics screen before loading xxx_vid driver
vo_vesa will switch to graphics mode before using of xxx_vid driver.
So you can traditional start it from text-mode.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2870 b3059339-0415-0410-9bf9-f77b7e298cf2