VaapiVEA: Get maximum resolution from libva

third_party/libva/va/va_backend.h

Index: third_party/libva/va/va_backend.h
diff --git a/third_party/libva/va/va_backend.h b/third_party/libva/va/va_backend.h
index bd828497dd9f6e40af90d5a79e746589e032b2eb..50f9cc50dbcf83df110674e1a8b86731031b2db6 100644
--- a/third_party/libva/va/va_backend.h
+++ b/third_party/libva/va/va_backend.h
@@ -392,6 +392,12 @@ struct VADriverVTable
                 VASurfaceID surface
         );
 
+        VAStatus (*vaGetCodecResolution) (

[wuchengli, 2015/01/23 12:58:21]

We should call this vaGetProfileResolution. Functions of va.h uses profile. For
example, vaQueryConfigProfiles, VAProfile, and etc. 

This function doesn't have VAProfile or other argument. What's the prerequisite
of calling this function? How does the caller know if the returned resolution is
for H264 or VP8? For decode or encode? Should we pass VAProfile, VAEntrypoint,
and VAConfigAttrib to this function?

+                VADriverContextP ctx,
+                unsigned int *width,    /* out */
+                unsigned int *height    /* out */
+        );
+
         /* DEPRECATED */
         VAStatus
         (*vaGetSurfaceAttributes)(