VkVideoDecodeH264SessionParametersCreateInfoEXT(3)

# VkVideoDecodeH264SessionParametersCreateInfoEXT(3) Manual Page

## Name

VkVideoDecodeH264SessionParametersCreateInfoEXT - Structure specifies H.264 decoder parameter set info

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## C Specification

An instance of VkVideoDecodeH264SessionParametersCreateInfoEXT holding one H.264 SPS and at least one H.264 PPS paramater set must be chained to VkVideoSessionParametersCreateInfoKHR when calling vkCreateVideoSessionParametersKHR to store these parameter set(s) with the decoder parameter set object for later reference. The provided H.264 SPS/PPS parameters must be within the limits specified during decoder creation for the decoder specified in VkVideoSessionParametersCreateInfoKHR.

The VkVideoDecodeH264SessionParametersCreateInfoEXT structure is defined as:

    // Provided by VK_EXT_video_decode_h264
    typedef struct VkVideoDecodeH264SessionParametersCreateInfoEXT {
        VkStructureType                                        sType;
        const void*                                            pNext;
        uint32_t                                               maxSpsStdCount;
        uint32_t                                               maxPpsStdCount;
        const VkVideoDecodeH264SessionParametersAddInfoEXT*    pParametersAddInfo;
    } VkVideoDecodeH264SessionParametersCreateInfoEXT;

## Members

- `sType` is the type of this structure.

- `pNext` is `NULL` or a pointer to a structure extending this structure.

- `maxSpsStdCount` is the maximum number of SPS parameters that the `VkVideoSessionParametersKHR` can contain.

- `maxPpsStdCount` is the maximum number of PPS parameters that the `VkVideoSessionParametersKHR` can contain.

- `pParametersAddInfo` is a pointer to an optional set of H.264 parameters to add upon object creation.

## Description

Valid Usage (Implicit)

- VUID-VkVideoDecodeH264SessionParametersCreateInfoEXT-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_SESSION_PARAMETERS_CREATE_INFO_EXT`

- VUID-VkVideoDecodeH264SessionParametersCreateInfoEXT-pParametersAddInfo-parameter
  If `pParametersAddInfo` is not `NULL`, `pParametersAddInfo` must be a valid pointer to a valid VkVideoDecodeH264SessionParametersAddInfoEXT structure

## See Also

VkStructureType, VkVideoDecodeH264SessionParametersAddInfoEXT

## 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 2014-2021 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0