Focus region configuration

STRUCT MEMBERS: nSize : Size of the structure in bytes nVersion : OMX specification version information nPortIndex : Port that this structure applies to bCenter : Use center region as focus region of interest bLeft : Use left region as focus region of interest bRight : Use right region as focus region of interest bTop : Use top region as focus region of interest bBottom : Use bottom region as focus region of interest bTopLeft : Use top left region as focus region of interest bTopRight : Use top right region as focus region of interest bBottomLeft : Use bottom left region as focus region of interest bBottomRight : Use bottom right region as focus region of interest