PFND3D12DDI_VIDEO_GETCAPS callback function (d3d12umddi.h)

Article
02/22/2024

The D3D runtime calls a client driver's PFND3D12DDI_VIDEO_GETCAPS callback function to query for video-related support provided by the driver for a specified type.

Syntax

PFND3D12DDI_VIDEO_GETCAPS Pfnd3d12ddiVideoGetcaps;

HRESULT Pfnd3d12ddiVideoGetcaps(
  [in]      D3D12DDI_HDEVICE hDrvDevice,
  [in, out] const D3D12DDIARG_VIDEO_GETCAPS_0020 *pArgs
)
{...}

Parameters

[in] hDrvDevice

The handle of a device.

[in, out] pArgs

Pointer to a caller-allocated D3D12DDIARG_VIDEO_GETCAPS_0020 structure used to request a video-specific capability.

Return value

If this callback function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

The following table provides a few examples of the meaning/values of pData and DataSize for various D3D12DDICAPS_TYPE_VIDEO_0020 values. Note that pInfo points to NULL in all of these examples, so is not shown in the table.

D3D12DDICAPS_TYPE_XXX	pData	DataSize
VIDEO_0020_DECODE_SUPPORT	D3D12DDI_VIDEO_DECODE_SUPPORT_DATA_0020 *	sizeof(D3D12DDI_VIDEO_DECODE_SUPPORT_DATA_0020)
VIDEO_0020_DECODE_PROFILES	D3D12DDI_VIDEO_DECODE_PROFILES_DATA_0020 *	sizeof(D3D12DDI_VIDEO_DECODE_PROFILES_DATA_0020)
VIDEO_0020_PROCESS_SUPPORT	D3D12DDI_VIDEO_PROCESS_SUPPORT_DATA_0032 *	sizeof(D3D12DDI_VIDEO_PROCESS_SUPPORT_DATA_0032)
VIDEO_0032_DECODER_HEAP_SIZE	D3D12DDI_VIDEO_DECODER_HEAP_SIZE_DATA_0072 *	sizeof(D3D12DDI_VIDEO_DECODER_HEAP_SIZE_DATA_0072)
VIDEO_0053_MOTION_ESTIMATOR	D3D12DDI_VIDEO_MOTION_ESTIMATOR_DATA_0053 *	sizeof(D3D12DDI_VIDEO_MOTION_ESTIMATOR_DATA_0053)
VIDEO_0080_ENCODER_CODEC	D3D12DDICAPS_VIDEO_ENCODER_CODEC_DATA_0080	sizeof(D3D12DDICAPS_VIDEO_ENCODER_CODEC_DATA_0080)

Requirements

Requirement	Value
Target Platform	Windows
Header	d3d12umddi.h (include D3d12umddi.h)