D3D12DDI_VIDEO_ENCODER_FRAME_SUBREGION_METADATA_0083_0 structure (d3d12umddi.h)

The D3D12DDI_VIDEO_ENCODER_FRAME_SUBREGION_METADATA_0083_0 structure represents subregion metadata of a video encoder frame.

Syntax

typedef struct D3D12DDI_VIDEO_ENCODER_FRAME_SUBREGION_METADATA_0083_0 {
  UINT64 bSize;
  UINT64 bStartOffset;
  UINT64 bHeaderSize;
} D3D12DDI_VIDEO_ENCODER_FRAME_SUBREGION_METADATA_0083_0;

Members

bSize

Output field in which to store the sizes of each sub-region, in bytes. Sub-regions sizes must include the sub-region initial padding, header, and payload.

bStartOffset

Output field in which to store the padding size that needs to be skipped at the beginning of every subregion, in bytes. This padding size is included in bSize.

For example, let pFrameSubregionsSizes be an array of bSize bytes for each slice. With bStartOffset and pFrameSubregionsSizes, the user can extract individual subregions from the output bitstream buffer by calculating the ith sub-region start offset as pBuffer + FrameStartOffset + sum j = (0, (i-1)){pFrameSubregionsSizes[j]} + pFrameSubregionsStartOffsets[i] and reading pFrameSubregionsSizes[i] bytes.

bHeaderSize

Output field in which to write the sizes in bits of each sub-region header.

With bHeaderSize, in addition to extracting the full sub-region from the bitstream as explained above, the user can extract the sub-regions payload and headers directly without needing to parse the full sub-region bitstream.

Remarks

See D3D12 video encoding for general information.

Requirements

Requirement	Value
Minimum supported client	Windows 11 (WDDM 3.0)
Header	d3d12umddi.h

See also

D3D12DDI_VIDEO_ENCODER_RESOLVE_METADATA_OUTPUT_ARGUMENTS_0082_0