D3D12_VIDEO_ENCODER_FRAME_SUBREGION_METADATA structure (d3d12video.h)

Represents video encoder frame subregion metadata.

Syntax

typedef struct D3D12_VIDEO_ENCODER_FRAME_SUBREGION_METADATA {
  UINT64 bSize;
  UINT64 bStartOffset;
  UINT64 bHeaderSize;
} D3D12_VIDEO_ENCODER_FRAME_SUBREGION_METADATA;

Members

bSize

Output field that receives the sizes in bytes of each subregion. Subregions sizes must include both the subregion initial padding, the subregion header and the subregion payload.

bStartOffset

Output field that receives the padding size in bytes that needs to be skipped at the beginning of every subregion. This padding size is included in the size reported above.

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

bHeaderSize

Output parameter that receives the sizes in bits of each subregion header. With this information, in addition to extracting the full subregion from the bitstream as explained above, the user can extract the subregions payload/headers directly without needing to parse the full subregion bitstream.

Requirements

Requirement	Value
Minimum supported client	Windows Build 22000
Minimum supported server	Windows Build 22000
Header	d3d12video.h