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DXVADDI_VIDEOCHROMASUBSAMPLING enumeration (d3dumddi.h)

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The DXVADDI_VIDEOCHROMASUBSAMPLING enumeration type contains values that identify the chroma encoding scheme for Y'Cb'Cr' data.

Syntax

typedef enum _DXVADDI_VIDEOCHROMASUBSAMPLING {
  DXVADDI_VideoChromaSubsamplingMask,
  DXVADDI_VideoChromaSubsampling_Unknown,
  DXVADDI_VideoChromaSubsampling_ProgressiveChroma,
  DXVADDI_VideoChromaSubsampling_Horizontally_Cosited,
  DXVADDI_VideoChromaSubsampling_Vertically_Cosited,
  DXVADDI_VideoChromaSubsampling_Vertically_AlignedChromaPlanes,
  DXVADDI_VideoChromaSubsampling_MPEG2,
  DXVADDI_VideoChromaSubsampling_MPEG1,
  DXVADDI_VideoChromaSubsampling_DV_PAL,
  DXVADDI_VideoChromaSubsampling_Cosited
} DXVADDI_VIDEOCHROMASUBSAMPLING;

Constants

 
DXVADDI_VideoChromaSubsamplingMask
The video chroma subsampling mask. The first four (0x0F) bits of a DWORD can be used to specify video chroma subsampling.
DXVADDI_VideoChromaSubsampling_Unknown
The video chroma subsampling is not specified.
DXVADDI_VideoChromaSubsampling_ProgressiveChroma
The video chroma subsampling is progressive.
DXVADDI_VideoChromaSubsampling_Horizontally_Cosited
Chroma samples are aligned on multiples of the luma samples horizontally.
DXVADDI_VideoChromaSubsampling_Vertically_Cosited
Chroma samples are aligned on multiples of the luma samples vertically.
DXVADDI_VideoChromaSubsampling_Vertically_AlignedChromaPlanes
The Pb and Pr (or Cb and Cr) planes have the same phase alignment. This value can be set only to 0 in the VideoChromaSubsampling member of the DXVADDI_EXTENDEDFORMAT structure if the data is vertically cosited.
DXVADDI_VideoChromaSubsampling_MPEG2
A bitwise OR of the DXVADDI_VideoChromaSubsampling_Horizontally_Cosited and DXVADDI_VideoChromaSubsampling_Vertically_AlignedChromaPlanes values that are used with 4:2:0 data.
DXVADDI_VideoChromaSubsampling_MPEG1
The DXVADDI_VideoChromaSubsampling_Vertically_AlignedChromaPlanes value that is used with 4:2:0 data.
DXVADDI_VideoChromaSubsampling_DV_PAL
A bitwise OR of the DXVADDI_VideoChromaSubsampling_Horizontally_Cosited and DXVADDI_VideoChromaSubsampling_Vertically_Cosited values that are used with 4:2:0 data.
DXVADDI_VideoChromaSubsampling_Cosited
A bitwise OR of the DXVADDI_VideoChromaSubsampling_Horizontally_Cosited, and DXVADDI_VideoChromaSubsampling_Vertically_Cosited, and DXVADDI_VideoChromaSubsampling_Vertically_AlignedChromaPlanes values that are used with 4:4:4, 4:2:2, and 4:1:1 data.

Remarks

A bitwise OR of the values of DXVADDI_VIDEOCHROMASUBSAMPLING can be used to create a value in the VideoChromaSubsampling member of the DXVADDI_EXTENDEDFORMAT structure.

Cosite variations indicate that the chroma samples are aligned with the luma samples. Typically, 4:2:0 data with chroma is aligned in one or more directions with the luma data. Note that 4:4:4, 4:2:2, and 4:1:1 data are always cosited in both directions.

Requirements

Requirement Value
Minimum supported client Available in Windows Vista and later versions of the Windows operating systems.
Header d3dumddi.h (include D3dumddi.h)

See also

DXVADDI_EXTENDEDFORMAT