VK_KHR_video_decode_h265

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 VK_KHR_video_decode_queue extension by adding support for decoding elementary video stream sequences compliant with the H.265/HEVC video compression standard.

New Structures

• Extending VkVideoCapabilitiesKHR:
  • VkVideoDecodeH265CapabilitiesKHR
• Extending VkVideoDecodeInfoKHR:
  • VkVideoDecodeH265PictureInfoKHR
• Extending VkVideoProfileInfoKHR, VkQueryPoolCreateInfo:
  • VkVideoDecodeH265ProfileInfoKHR
• Extending VkVideoReferenceSlotInfoKHR:
  • VkVideoDecodeH265DpbSlotInfoKHR
• Extending VkVideoSessionParametersCreateInfoKHR:
  • VkVideoDecodeH265SessionParametersCreateInfoKHR
• Extending VkVideoSessionParametersUpdateInfoKHR:
  • VkVideoDecodeH265SessionParametersAddInfoKHR

New Enum Constants

• VK_KHR_VIDEO_DECODE_H265_EXTENSION_NAME
• VK_KHR_VIDEO_DECODE_H265_SPEC_VERSION
• Extending VkStructureType:
  • VK_STRUCTURE_TYPE_VIDEO_DECODE_H265_CAPABILITIES_KHR
  • VK_STRUCTURE_TYPE_VIDEO_DECODE_H265_DPB_SLOT_INFO_KHR
  • VK_STRUCTURE_TYPE_VIDEO_DECODE_H265_PICTURE_INFO_KHR
  • VK_STRUCTURE_TYPE_VIDEO_DECODE_H265_PROFILE_INFO_KHR
  • VK_STRUCTURE_TYPE_VIDEO_DECODE_H265_SESSION_PARAMETERS_ADD_INFO_KHR
  • VK_STRUCTURE_TYPE_VIDEO_DECODE_H265_SESSION_PARAMETERS_CREATE_INFO_KHR
• Extending VkVideoCodecOperationFlagBitsKHR:
  • VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR

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