// Copyright 2018-2024 The Khronos Group Inc.
//
// SPDX-License-Identifier: CC-BY-4.0

include::{generated}/meta/{refprefix}VK_KHR_video_decode_h265.adoc[]

=== Other Extension Metadata

*Last Modified Date*::
    2023-12-05
*IP Status*::
    No known IP claims.
*Contributors*::
  - Ahmed Abdelkhalek, AMD
  - HoHin Lau, AMD
  - Jake Beju, AMD
  - Peter Fang, AMD
  - Ping Liu, Intel
  - Srinath Kumarapuram, NVIDIA
  - Tony Zlatinski, NVIDIA
  - Daniel Rakos, RasterGrid

=== Description

This extension builds upon the `apiext:VK_KHR_video_decode_queue` extension
by adding support for decoding elementary video stream sequences compliant
with the H.265/HEVC video compression standard.

[NOTE]
.Note
====
This extension was promoted to `KHR` from the provisional extension
`VK_EXT_video_decode_h265`.
====

include::{generated}/interfaces/VK_KHR_video_decode_h265.adoc[]

=== Version History

  * Revision 1, 2018-6-11 (Peter Fang)
  ** Initial draft
  * Revision 1.6, March 29 2021 (Tony Zlatinski)
  ** Spec and API updates.
  * Revision 2, 2022-03-16 (Ahmed Abdelkhalek)
  ** Relocate Std header version reporting/requesting from this extension to
     VK_KHR_video_queue extension.
  ** Remove the now empty VkVideoDecodeH265SessionCreateInfoEXT.
  * Revision 3, 2022-03-31 (Ahmed Abdelkhalek)
  ** Use type StdVideoH265Level for VkVideoDecodeH265Capabilities.maxLevel
  * Revision 4, 2022-08-09 (Daniel Rakos)
  ** Rename `VkVideoDecodeH265ProfileEXT` to
     `VkVideoDecodeH265ProfileInfoEXT`
  * Revision 5, 2022-09-18 (Daniel Rakos)
  ** Rename `vpsStdCount`, `pVpsStd`, `spsStdCount`, `pSpsStd`,
     `ppsStdCount`, and `pPpsStd` to `stdVPSCount`, `pStdVPSs`,
     `stdSPSCount`, `pStdSPSs`, `stdPPSCount`, and `pStdPPSs`, respectively,
     in `VkVideoDecodeH265SessionParametersAddInfoEXT`
  ** Rename `maxVpsStdCount`, `maxSpsStdCount`, and `maxPpsStdCount` to
     `maxStdVPSCount`, `maxStdSPSCount` and `maxStdPPSCount`, respectively,
     in `VkVideoDecodeH265SessionParametersCreateInfoEXT`
  ** Rename `slicesCount` and `pSlicesDataOffsets` to `sliceCount` and
     `pSliceOffsets`, respectively, in `VkVideoDecodeH265PictureInfoEXT`
  * Revision 6, 2022-11-14 (Daniel Rakos)
  ** Rename `slice` to `sliceSegment` in the APIs for better clarity
  * Revision 7, 2022-11-14 (Daniel Rakos)
  ** Change extension from `EXT` to `KHR`
  ** Extension is no longer provisional
  * Revision 8, 2023-12-05 (Daniel Rakos)
  ** Condition reference picture setup based on the value of
     `StdVideoDecodeH265PictureInfo::flags.IsReference`