ID3D11VideoDevice1::CheckVideoDecoderDownsampling method (d3d11_1.h)

Indicates whether the video decoder supports downsampling with the specified input format, and whether real-time downsampling is supported.

Syntax

HRESULT CheckVideoDecoderDownsampling(
  [in]  const D3D11_VIDEO_DECODER_DESC   *pInputDesc,
  [in]  DXGI_COLOR_SPACE_TYPE            InputColorSpace,
  [in]  const D3D11_VIDEO_DECODER_CONFIG *pInputConfig,
  [in]  const DXGI_RATIONAL              *pFrameRate,
  [in]  const D3D11_VIDEO_SAMPLE_DESC    *pOutputDesc,
  [out] BOOL                             *pSupported,
  [out] BOOL                             *pRealTimeHint
);

Parameters

[in] pInputDesc

Type: const D3D11_VIDEO_DECODER_DESC*

An object describing the decoding profile, the resolution, and format of the input stream. This is the resolution and format to be downsampled.

[in] InputColorSpace

Type: DXGI_COLOR_SPACE_TYPE

A DXGI_COLOR_SPACE_TYPE value that specifies the colorspace of the reference frame data.

[in] pInputConfig

Type: const D3D11_VIDEO_DECODER_CONFIG*

The configuration data associated with the decode profile.

[in] pFrameRate

Type: const DXGI_RATIONAL*

The frame rate of the video content. This is used by the driver to determine whether the video can be decoded in real-time.

[in] pOutputDesc

Type: const D3D11_VIDEO_SAMPLE_DESC*

An object describing the resolution, format, and colorspace of the output frames. This is the destination resolution and format of the downsample operation.

[out] pSupported

Type: BOOL*

Pointer to a boolean value set by the driver that indicates if downsampling is supported with the specified input data. True if the driver supports the requested downsampling; otherwise, false.

[out] pRealTimeHint

Type: BOOL*

Pointer to a boolean value set by the driver that indicates if real-time decoding is supported with the specified input data. True if the driver supports the requested real-time decoding; otherwise, false. Note that the returned value is based on the current configuration of the video decoder and does not guarantee that real-time decoding will be supported for future downsampling operations.

Return value

Type: HRESULT

This method returns one of the following error codes.

Remarks

You should call GetVideoDecoderCaps to determine whether decoder downsampling is supported before checking support for a specific configuration.

Requirements

See also

ID3D11VideoDevice1