VkVideoInlineQueryInfoKHR(3)

# VkVideoInlineQueryInfoKHR(3) Manual Page

## Name

VkVideoInlineQueryInfoKHR - Structure specifying inline query information for video coding commands

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## C Specification

The `VkVideoInlineQueryInfoKHR` structure is defined as:

    // Provided by VK_KHR_video_maintenance1
    typedef struct VkVideoInlineQueryInfoKHR {
        VkStructureType    sType;
        const void*        pNext;
        VkQueryPool        queryPool;
        uint32_t           firstQuery;
        uint32_t           queryCount;
    } VkVideoInlineQueryInfoKHR;

## Members

- `sType` is a VkStructureType value identifying this structure.

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

- `queryPool` is `VK_NULL_HANDLE` or a valid handle to a VkQueryPool object that will manage the results of the queries.

- `firstQuery` is the query index within the query pool that will contain the query results for the first video coding operation. The query results of subsequent video coding operations will be contained by subsequent query indices.

- `queryCount` is the number of queries to execute.

  | Note In practice, if `queryPool` is not `VK_NULL_HANDLE`, then `queryCount` will always have to match the number of video coding operations issued by the video coding command this structure is specified to, meaning that using inline queries in a video coding command will always execute a query for each issued video coding operation.

## Description

This structure can be included in the `pNext` chain of the input parameter structure of video coding commands.

- In the `pNext` chain of the `pDecodeInfo` parameter of the vkCmdDecodeVideoKHR command to execute a query for each video decode operation issued by the command.

- In the `pNext` chain of the `pEncodeInfo` parameter of the vkCmdEncodeVideoKHR command to execute a query for each video encode operation issued by the command.

Valid Usage

- VUID-VkVideoInlineQueryInfoKHR-queryPool-08372
  If `queryPool` is not `VK_NULL_HANDLE`, then `firstQuery` must be less than the number of queries in `queryPool`

- VUID-VkVideoInlineQueryInfoKHR-queryPool-08373
  If `queryPool` is not `VK_NULL_HANDLE`, then the sum of `firstQuery` and `queryCount` must be less than or equal to the number of queries in `queryPool`

Valid Usage (Implicit)

- VUID-VkVideoInlineQueryInfoKHR-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_VIDEO_INLINE_QUERY_INFO_KHR`

- VUID-VkVideoInlineQueryInfoKHR-queryPool-parameter
  If `queryPool` is not VK_NULL_HANDLE, `queryPool` must be a valid VkQueryPool handle

## See Also

VK_KHR_video_maintenance1, VkQueryPool, 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 2014-2023 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0