D3D12_VIDEO_ENCODER_SUPPORT_FLAGS enumeration (d3d12video.h)

Article
08/23/2022

Specifies flags for video encoder features.

Syntax

typedef enum D3D12_VIDEO_ENCODER_SUPPORT_FLAGS {
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_NONE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_GENERAL_SUPPORT_OK,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_RECONFIGURATION_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RESOLUTION_RECONFIGURATION_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_VBV_SIZE_CONFIG_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_FRAME_ANALYSIS_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RECONSTRUCTED_FRAMES_REQUIRE_TEXTURE_ARRAYS,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_DELTA_QP_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_SUBREGION_LAYOUT_RECONFIGURATION_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_ADJUSTABLE_QP_RANGE_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_INITIAL_QP_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_MAX_FRAME_SIZE_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_SEQUENCE_GOP_RECONFIGURATION_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_MOTION_ESTIMATION_PRECISION_MODE_LIMIT_AVAILABLE,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_EXTENSION1_SUPPORT,
  D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_QUALITY_VS_SPEED_AVAILABLE
} ;

Constants


`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_NONE` None.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_GENERAL_SUPPORT_OK` Indicates whether the given configuration is supported by the encoder in combination with the rest of the flags to convey certain limitations or no general support. The Direct3D 12 Debug layer can provide further information.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_RECONFIGURATION_AVAILABLE` Support for changing the rate control in the middle of the encoding session.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RESOLUTION_RECONFIGURATION_AVAILABLE` Support for changing the resolution in the middle of the encoding session.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_VBV_SIZE_CONFIG_AVAILABLE` Support for configuring the VBV Initial fullness and capacity for rate control algorithms.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_FRAME_ANALYSIS_AVAILABLE` Support for rate control modes that involve frame analysis to optimize the bitrate usage at the cost of a slower performance.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RECONSTRUCTED_FRAMES_REQUIRE_TEXTURE_ARRAYS` When this flag is set, textures referring reconstructed pictures can only be referenced as a texture array, as opposed to an array of separate texture 2D resources with each resource having array size of 1. When this capability is not required, there is more flexibility for the host. This is important for scenarios where the resolution changes frequently and the DPB needs to be flushed for an IDR frame, because a texture array can only be allocated and deallocated as an single unit, but separate texture 2D resources can be allocated and deallocated individually.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_DELTA_QP_AVAILABLE` Support for Delta QP usage in rate control
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_SUBREGION_LAYOUT_RECONFIGURATION_AVAILABLE` Support for dynamic subregion layout changes during an encoding session.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_ADJUSTABLE_QP_RANGE_AVAILABLE` Support for adjustable QP range in rate control.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_INITIAL_QP_AVAILABLE` Support for adjustable initial QP in rate control.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_MAX_FRAME_SIZE_AVAILABLE` Ssupport for setting a maximum cap in the bitrate algorithm per each encoded frame.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_SEQUENCE_GOP_RECONFIGURATION_AVAILABLE` Support for dynamic GOP changes during an encode session.
`D3D12_VIDEO_ENCODER_SUPPORT_FLAG_MOTION_ESTIMATION_PRECISION_MODE_LIMIT_AVAILABLE` Support for the caller to limit the precision used for motion search on frame encode.

Remarks

D3D12_VIDEO_ENCODER_SUPPORT_FLAG_GENERAL_SUPPORT_OK indicates that whether there is general support. The rest of the flags can be combined to convey further information.

General support always expected.

There is support for all buffers to be allocated with D3D12_MEMORY_POOL_L0. This is always system memory, but still a D3D12 buffer.
There is support for all buffers to be allocated with D3D12_MEMORY_POOL_L1), the default pool, including those allocated with D3D12_CPU_PAGE_PROPERTY_NOT_AVAILABLE.

Requirements

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