C Specification
The VkVideoCapabilitiesKHR
structure is defined as:
// Provided by VK_KHR_video_queue
typedef struct VkVideoCapabilitiesKHR {
VkStructureType sType;
void* pNext;
VkVideoCapabilityFlagsKHR flags;
VkDeviceSize minBitstreamBufferOffsetAlignment;
VkDeviceSize minBitstreamBufferSizeAlignment;
VkExtent2D pictureAccessGranularity;
VkExtent2D minCodedExtent;
VkExtent2D maxCodedExtent;
uint32_t maxDpbSlots;
uint32_t maxActiveReferencePictures;
VkExtensionProperties stdHeaderVersion;
} VkVideoCapabilitiesKHR;
Members
-
sType
is a VkStructureType value identifying this structure. -
pNext
isNULL
or a pointer to a structure extending this structure. -
flags
is a bitmask of VkVideoCapabilityFlagBitsKHR specifying capability flags. -
minBitstreamBufferOffsetAlignment
is the minimum alignment for bitstream buffer offsets. -
minBitstreamBufferSizeAlignment
is the minimum alignment for bitstream buffer range sizes. -
pictureAccessGranularity
is the granularity at which image access to video picture resources happen. -
minCodedExtent
is the minimum width and height of the coded frames. -
maxCodedExtent
is the maximum width and height of the coded frames. -
maxDpbSlots
is the maximum number of DPB slots supported by a single video session. -
maxActiveReferencePictures
is the maximum number of active reference pictures a single video coding operation can use. -
stdHeaderVersion
is a VkExtensionProperties structure reporting the Video Std header name and version supported for the video profile.
Description
Note
It is common for video compression standards to allow using all reference
pictures associated with active DPB slots as active reference pictures,
hence for video decode profiles the values returned in |
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.