CedarX

=Overview=

After some pressure caused by the controversies surrounding the license of this library, Allwinner released a new media-codec library called Sunxi-CedarX , which is a rewrite that up to now only partial implements some codecs as open source, letting the rest of the codecs and features such an encoding dependents of a closed source plugin binary.

= Disadvantages Allwinner's CedarX technology and libraries:=
 * Allwinner's own CedarX proprietary libraries are known to have no clear usage license, so even if the source code for some versions is available the terms-of-use is unknown in open source software. Allwinner is slowly working towards to resolve this issue.

= Reverse engineering = The video engine was and is currently being reverse engineered with successful results. To the point of making possible an experimental vdpau implementation capable of being used to play videos.
 * Reverse engineering progress history
 * Video Engine (VE) VE Register guide
 * Audio Codec Engine (ACE) ACE Register guide
 * The page of this effort entitled Cedrus Project.

= Integration =
 * XBMC (outdated)
 * VLC

=CedarX official source code libraries and third-party forks=
 * https://github.com/allwinner-zh/media-codec Officiall Allwinner source tree
 * https://github.com/fsebentley/CedarX-12.06.2015 This is new source and binary plugins from Allwinner with some API documentation and example C application...

The following are old and obsolete, is not recommend for any use.
 * https://github.com/allwinner-dev-team/android_external_cedarx Allwinner Dev Team Android external CedarX fork
 * https://github.com/linux-sunxi/cedarx-libs linux-sunxi team fork of the official Allwinner CedarX libcedar source code libraries
 * https://github.com/huceke/libcedar libcedar decoder library for libvecore by Edgar Hucek (a.k.a. Gimli) fork for outdated XBMC
 * https://github.com/willswang/libcedarx Wills Wang libcedarx library for libvecore fork for VLC
 * https://github.com/mortaromarcello/android_external_cedarx Android external CedarX fork by mortaromarcello

= Possibly irrelevant observations =
 * There seems to be a distinction in the Android code between audio decoding ("CedarA") and video decoding ("CedarV").

=References=

= See also =
 * CedarX/Misc Docs - some useful facts from IRC chat conversations
 * CedarXVideoRenderingChart - Overview chart of working/ non working video files
 * CedarX/libve - Using the Android blob on linux via libhybris
 * XBMC (outdated) - XBMC Media Center
 * VLC - VideoLAN Client
 * CedarXPlayerTest - Testing player from Ubuntu image