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VK_KHR_video_decode_h264

Other Extension Metadata

Last Modified Date

2023-12-05

IP Status

No known IP claims.

Contributors
  • Ahmed Abdelkhalek, AMD
  • Chunbo Chen, Intel
  • 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.264/AVC video compression standard.

This extension was promoted to KHR from the provisional extension VK_EXT_video_decode_h264.

New Structures

New Enums

New Bitmasks

New Enum Constants

  • VK_KHR_VIDEO_DECODE_H264_EXTENSION_NAME
  • VK_KHR_VIDEO_DECODE_H264_SPEC_VERSION
  • Extending VkStructureType:
    • VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_CAPABILITIES_KHR
    • VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_DPB_SLOT_INFO_KHR
    • VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_PICTURE_INFO_KHR
    • VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_PROFILE_INFO_KHR
    • VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_SESSION_PARAMETERS_ADD_INFO_KHR
    • VK_STRUCTURE_TYPE_VIDEO_DECODE_H264_SESSION_PARAMETERS_CREATE_INFO_KHR
  • Extending VkVideoCodecOperationFlagBitsKHR:
    • VK_VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR

Version History

  • Revision 1, 2018-6-11 (Peter Fang)
    • Initial draft
  • Revision 2, March 29 2021 (Tony Zlatinski)
    • Spec and API Updates
  • Revision 3, August 1 2021 (Srinath Kumarapuram)
    • Rename VkVideoDecodeH264FieldLayoutFlagsEXT to VkVideoDecodeH264PictureLayoutFlagsEXT, VkVideoDecodeH264FieldLayoutFlagBitsEXT to VkVideoDecodeH264PictureLayoutFlagBitsEXT (along with the names of enumerants it defines), and VkVideoDecodeH264ProfileEXT.fieldLayout to VkVideoDecodeH264ProfileEXT.pictureLayout, following Vulkan naming conventions.
  • Revision 4, 2022-03-16 (Ahmed Abdelkhalek)
    • Relocate Std header version reporting/requesting from this extension to VK_KHR_video_queue extension.
    • Remove the now empty VkVideoDecodeH264SessionCreateInfoEXT.
  • Revision 5, 2022-03-31 (Ahmed Abdelkhalek)
    • Use type StdVideoH264Level for VkVideoDecodeH264Capabilities.maxLevel
  • Revision 6, 2022-08-09 (Daniel Rakos)
    • Rename VkVideoDecodeH264ProfileEXT to VkVideoDecodeH264ProfileInfoEXT
    • Rename VkVideoDecodeH264MvcEXT to VkVideoDecodeH264MvcInfoEXT
  • Revision 7, 2022-09-18 (Daniel Rakos)
    • Change type of VkVideoDecodeH264ProfileInfoEXT::pictureLayout to VkVideoDecodeH264PictureLayoutFlagBitsEXT
    • Remove MVC support and related VkVideoDecodeH264MvcInfoEXT structure
    • Rename spsStdCount, pSpsStd, ppsStdCount, and pPpsStd to stdSPSCount, pStdSPSs, stdPPSCount, and pStdPPSs, respectively, in VkVideoDecodeH264SessionParametersAddInfoEXT
    • Rename maxSpsStdCount and maxPpsStdCount to maxStdSPSCount and maxStdPPSCount, respectively, in VkVideoDecodeH264SessionParametersCreateInfoEXT
    • Rename slicesCount and pSlicesDataOffsets to sliceCount and pSliceOffsets, respectively, in VkVideoDecodeH264PictureInfoEXT
  • Revision 8, 2022-09-29 (Daniel Rakos)
    • Change extension from EXT to KHR
    • Extension is no longer provisional
  • Revision 9, 2023-12-05 (Daniel Rakos)
    • Condition reference picture setup based on the value of StdVideoDecodeH264PictureInfo::flags.is_reference