viewpoint: add reverse viewpoint function
authorAlexandre Janniaux <ajanni@videolabs.io>
Fri, 8 Mar 2019 09:35:38 +0000 (10:35 +0100)
committerSteve Lhomme <robux4@ycbcr.xyz>
Mon, 11 Mar 2019 08:19:34 +0000 (09:19 +0100)
commit5701c7fbcaf5989f392fe16112ab257d27733737
treece13484d3bdfd41c4bd8faca40f4743ad20f1023
parent900cb6ee6f3ba7abe321dabe30a7fe6d9197e1a6
viewpoint: add reverse viewpoint function

It reverses the transformation (here rotation only) which is helpful to
convert the viewpoint rotation into a world rotation for video outputs.

Signed-off-by: Steve Lhomme <robux4@ycbcr.xyz>
include/vlc_viewpoint.h