// d3d12umddi.h

typedef enum D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095 {
  D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_EIGHTTAP = 0,
  D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_EIGHTTAP_SMOOTH = 1,
  D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_EIGHTTAP_SHARP = 2,
  D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_BILINEAR = 3,
  D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_SWITCHABLE = 4
} ;
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Windows Driver Kit DDI reference (ne-d3d12umddi-d3d12ddi_video_encoder_av1_interpolation_filters_0095)

Description

The D3D12_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS enumeration defines the list of distinct interpolation filter types that can be used in the AV1 video encoding process, where each value represents a specific interpolation filter.

Constants

`D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_EIGHTTAP:0`

The eight-tap interpolation filter uses eight samples to create a prediction.

`D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_EIGHTTAP_SMOOTH:1`

The eight-tap smooth interpolation filter is a variant of the eight-tap filter that applies a smoothing function to reduce sharpness.

`D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_EIGHTTAP_SHARP:2`

The eight-tap sharp interpolation filter is another variant of the eight-tap filter that emphasizes sharpness.

`D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_BILINEAR:3`

The bilinear interpolation filter uses two samples to create a prediction.

`D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095_SWITCHABLE:4`

The encoder has the capability to dynamically switch between different interpolation filters based on the content of each block. Instead of using a single filter for the entire video frame, the encoder can choose the most appropriate filter for each block to optimize quality and compression efficiency.

Remarks

See D3D12 AV1 video encoding for more information.

D3D12DDI_VIDEO_ENCODER_AV1_INTERPOLATION_FILTERS_0095 - NtDoc