VkVideoEncodeH265DpbSlotInfoKHR

The VkVideoEncodeH265DpbSlotInfoKHR structure is defined as:

typedef struct VkVideoEncodeH265DpbSlotInfoKHR {
    VkStructureType sType;
    const void* pNext;
    const StdVideoEncodeH265ReferenceInfo* pStdReferenceInfo;
} VkVideoEncodeH265DpbSlotInfoKHR;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• pStdReferenceInfo is a pointer to a StdVideoEncodeH265ReferenceInfo structure specifying H.265 reference information.

This structure is specified in the pNext chain of VkVideoEncodeInfoKHR::pSetupReferenceSlot, if not NULL, and the pNext chain of the elements of VkVideoEncodeInfoKHR::pReferenceSlots to specify the codec-specific reference picture information for an H.265 encode operation.

Active Reference Picture Information

When this structure is specified in the pNext chain of the elements of VkVideoEncodeInfoKHR::pReferenceSlots, one element is added to the list of active reference pictures used by the video encode operation for each element of VkVideoEncodeInfoKHR::pReferenceSlots as follows:

• The image subregion used is determined according to the H.265 Encode Picture Data Access section.
• The reference picture is associated with the DPB slot index specified in the slotIndex member of the corresponding element of VkVideoEncodeInfoKHR::pReferenceSlots.
• The reference picture is associated with the H.265 reference information provided in pStdReferenceInfo.

Reconstructed Picture Information

When this structure is specified in the pNext chain of VkVideoEncodeInfoKHR::pSetupReferenceSlot, the information related to the reconstructed picture is defined as follows:

• The image subregion used is determined according to the H.265 Encode Picture Data Access section.
• If reference picture setup is requested, then the reconstructed picture is used to activate the DPB slot with the index specified in VkVideoEncodeInfoKHR::pSetupReferenceSlot→slotIndex.
• The reconstructed picture is associated with the H.265 reference information provided in pStdReferenceInfo.

Std Reference Information

The members of the StdVideoEncodeH265ReferenceInfo structure pointed to by pStdReferenceInfo are interpreted as follows:

• flags.reserved is used only for padding purposes and is otherwise ignored;
• flags.used_for_long_term_reference is 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;
• flags.unused_for_reference is 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;
• pic_type as defined in section 7.4.3.5 of the ITU-T H.265 Specification;
• PicOrderCntVal as defined in section 8.3.1 of the ITU-T H.265 Specification;
• TemporalId as defined in section 7.4.2.2 of the ITU-T H.265 Specification.