C Specification
The VkVideoDecodeH265DpbSlotInfoKHR structure is defined as:
// Provided by VK_KHR_video_decode_h265
typedef struct VkVideoDecodeH265DpbSlotInfoKHR {
    VkStructureType                           sType;
    const void*                               pNext;
    const StdVideoDecodeH265ReferenceInfo*    pStdReferenceInfo;
} VkVideoDecodeH265DpbSlotInfoKHR;Members
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sTypeis a VkStructureType value identifying this structure.
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pNextisNULLor a pointer to a structure extending this structure.
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pStdReferenceInfois a pointer to aStdVideoDecodeH265ReferenceInfostructure specifying reference picture information described in section 8.3 of the ITU-T H.265 Specification.
Description
This structure is specified in the pNext chain of
VkVideoDecodeInfoKHR::pSetupReferenceSlot, if not NULL, and
the pNext chain of the elements of
VkVideoDecodeInfoKHR::pReferenceSlots to specify the
codec-specific reference picture information for an H.265
decode operation.
- Active Reference Picture Information
- 
When this structure is specified in the pNextchain of the elements of VkVideoDecodeInfoKHR::pReferenceSlots, one element is added to the list of active reference pictures used by the video decode operation for each element of VkVideoDecodeInfoKHR::pReferenceSlotsas follows:- 
The image subregion used is determined according to the H.265 Decode Picture Data Access section. 
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The reference picture is associated with the DPB slot index specified in the slotIndexmember of the corresponding element of VkVideoDecodeInfoKHR::pReferenceSlots.
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The reference picture is associated with the H.265 reference information provided in pStdReferenceInfo.
 
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- Reconstructed Picture Information
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When this structure is specified in the pNextchain of VkVideoDecodeInfoKHR::pSetupReferenceSlot, the information related to the reconstructed picture is defined as follows:- 
The image subregion used is determined according to the H.265 Decode Picture Data Access section. 
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If reference picture setup is requested, then the reconstructed picture is used to activate the DPB slot with the index specified in VkVideoDecodeInfoKHR:: pSetupReferenceSlot->slotIndex.
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The reconstructed picture is associated with the H.265 reference information provided in pStdReferenceInfo.
 
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- Std Reference Information
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The members of the StdVideoDecodeH265ReferenceInfostructure pointed to bypStdReferenceInfoare interpreted as follows:- 
flags.used_for_long_term_referenceis used to indicate whether the picture is marked as “used for long-term reference” as defined in section 8.3.2 of the ITU-T H.265 Specification;
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flags.unused_for_referenceis used to indicate whether the picture is marked as “unused for reference” as defined in section 8.3.2 of the ITU-T H.265 Specification;
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all other members are interpreted as defined in section 8.3 of the ITU-T H.265 Specification. 
 
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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.