PFND3DWDDM2_4DDI_VIDEODECODERSUBMITBUFFERS callback function (d3d10umddi.h)

Artikel
10/21/2021

Submits one or more video frame buffers for DirectX Video Acceleration (DXVA) decoding.

Syntax

PFND3DWDDM2_4DDI_VIDEODECODERSUBMITBUFFERS Pfnd3dwddm24DdiVideodecodersubmitbuffers;

HRESULT Pfnd3dwddm24DdiVideodecodersubmitbuffers(
  [in] D3D10DDI_HDEVICE hDevice,
  [in] D3D11_1DDI_HDECODE hDecode,
  [in] UINT BufferCount,
  [in] const D3DWDDM2_4DDI_VIDEO_DECODER_BUFFER_DESC *pBufferDesc
)
{...}

Parameters

[in] hDevice

A handle to the display device (graphics context).

[in] hDecode

A handle to the video decoder object that was created through a call to the CreateVideoDecoder function.

[in] BufferCount

The number of buffers in the array that is referenced by the pBufferDesc parameter.

[in] pBufferDesc

A pointer to an array of one or more D3DWDDM2_4DDI_VIDEO_DECODER_BUFFER_DESC structures. For more information, see the Remarks section.

Return value

Returns one of the following HRESULT values:

Return code	Description
S_OK	The session key for the cryptographic session was negotiated successfully.
E_OUTOFMEMORY	Memory was not available to complete the operation.

Remarks

The pBufferDesc parameter points to an array of one or more D3DWDDM2_4DDI_VIDEO_DECODER_BUFFER_DESC structures. Each element in the array describes a compressed video frame buffer that is submitted for decoding.

Each D3DWDDM2_4DDI_VIDEO_DECODER_BUFFER_DESC structure includes the following data:

The resource that will receive the decrypted and decode frame buffers.
A D3D11_1DDI_ENCRYPTED_BLOCK_INFO structure that specifies which bytes of the frame buffer are encrypted.
A pointer to a D3D11_1DDI_AES_CTR_IV structure that contains an initialization vector (IV) for the frame buffer data that was encrypted by using the 128-bit Advanced Encryption Standard CTR mode (AES-CTR) block cipher encryption algorithm.

Note

If the decode buffer does not contain any encrypted data, this pointer is set to NULL. This function does not honor a Microsoft Direct3D 11 predicate that may have been set.

Requirements

Requirement	Value
Header	d3d10umddi.h

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