C Specification
The VkVideoEncodeH265DpbSlotInfoKHR structure is defined as:
// Provided by VK_KHR_video_encode_h265
typedef struct VkVideoEncodeH265DpbSlotInfoKHR {
VkStructureType sType;
const void* pNext;
const StdVideoEncodeH265ReferenceInfo* pStdReferenceInfo;
} VkVideoEncodeH265DpbSlotInfoKHR;Members
-
sTypeis a VkStructureType value identifying this structure. -
pNextisNULLor a pointer to a structure extending this structure. -
pStdReferenceInfois a pointer to aStdVideoEncodeH265ReferenceInfostructure specifying H.265 reference information.
Description
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
pNextchain 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::pReferenceSlotsas 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
slotIndexmember 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
pNextchain 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
StdVideoEncodeH265ReferenceInfostructure pointed to bypStdReferenceInfoare interpreted as follows:-
flags.reservedis used only for padding purposes and is otherwise ignored; -
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; -
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; -
pic_typeas defined in section 7.4.3.5 of the ITU-T H.265 Specification; -
PicOrderCntValas defined in section 8.3.1 of the ITU-T H.265 Specification; -
TemporalIdas defined in section 7.4.2.2 of the ITU-T H.265 Specification.
-
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.