Gallium3D’s VA-API state tracker has already supported H.265/HEVC video decoding as well as the support being in Gallium3D VDPAU too with it being supported by Radeon’s open-source UVD code. Rounding out the API video-accelerated decode coverage of H.265 is now OpenMAX support…

Source: Phoronix – AMD Patches For OpenMAX HEVC/H.265 Decoding