C Specification

When a video session parameters object is created with the codec operation VK_VIDEO_CODEC_OPERATION_DECODE_AV1_BIT_KHR, the VkVideoSessionParametersCreateInfoKHR::pNext chain must include a VkVideoDecodeAV1SessionParametersCreateInfoKHR structure specifying the contents of the object.

The VkVideoDecodeAV1SessionParametersCreateInfoKHR structure is defined as:

// Provided by VK_KHR_video_decode_av1
typedef struct VkVideoDecodeAV1SessionParametersCreateInfoKHR {
    VkStructureType                     sType;
    const void*                         pNext;
    const StdVideoAV1SequenceHeader*    pStdSequenceHeader;
} VkVideoDecodeAV1SessionParametersCreateInfoKHR;

Members

  • sType is a VkStructureType value identifying this structure.

  • pNext is NULL or a pointer to a structure extending this structure.

  • pStdSequenceHeader is a pointer to a StdVideoAV1SequenceHeader structure describing the AV1 sequence header entry to store in the created object.

Description

Note

As AV1 video session parameters objects will only ever contain a single AV1 sequence header, this has to be specified at object creation time and such video session parameters objects cannot be updated using the vkUpdateVideoSessionParametersKHR command. When a new AV1 sequence header is decoded from the input video bitstream the application needs to create a new video session parameters object to store it.
Valid Usage (Implicit)

  • VUID-VkVideoDecodeAV1SessionParametersCreateInfoKHR-sType-sType
    sType must be VK_STRUCTURE_TYPE_VIDEO_DECODE_AV1_SESSION_PARAMETERS_CREATE_INFO_KHR

  • VUID-VkVideoDecodeAV1SessionParametersCreateInfoKHR-pStdSequenceHeader-parameter
    pStdSequenceHeader must be a valid pointer to a valid StdVideoAV1SequenceHeader value

See Also

VK_KHR_video_decode_av1, VkStructureType

Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

Copyright

Copyright 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0