[Libva] multi-threading

[Julien Isorce]

Hi,

Should the application assume that vaapi is thread safe ? Like for vdpau:
http://cgit.freedesktop.org/vdpau/libvdpau/tree/include/vdpau/vdpau.h#n209 .
Or is the thread safety delegated to the vaapi user like many libraries ?

I cannot see anything about thread in
http://cgit.freedesktop.org/vaapi/libva/tree/va/va.h .
Though in the intel driver http://cgit.freedesktop.org/vaapi/intel-driver/
there are some mutex:

i965->pp_mutex : post processing
i965->render_mutex :  vaPutSurface
intel->ctxmutex : does not seem to be used
heap->mutex: (object_heap_allocate / object_heap_lookup ... )

>From that it means that the operations on the container of object IDs is
thread safe. But no assumptions on the objects them-self.

Any clarification in general ?

Thx in advance
Julien
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