H261_B

The H261_B restricted profile contains the set of features required for support of ITU-T Rec. H.261 without acceleration support for H.261 Annex D graphics, but with deblocking filter postprocessing support. Support of this profile is currently encouraged, but not required.

This set of features is defined by the restrictions for the H261_A restricted profile, with the following exceptions.

Restrictions on DXVA_ConnectMode

The following restriction on the DXVA_ConnectMode structure applies when the bDXVA_Func variable defined by the dwFunction member of the DXVA_ConfigPictureDecode structure is equal to 1 (picture decoding).

Structure Member	Value
wRestrictedMode	DXVA_RESTRICTED_MODE_H261_B

Restrictions on DXVA_PictureParameters

The following restrictions on the DXVA_PictureParameters structure apply when the bDXVA_Func variable defined by the dwFunction member of DXVA_ConfigPictureDecode is equal to 1.

Structure Member	Value
bPicDeblocked	Zero or 1
wDeblockedPictureIndex	Must not be equal to the wDecodedPictureIndex member of DXVA_PictureParameters when the bPicDeblocked member is 1.