C Specification
When calling vkGetPhysicalDeviceVideoEncodeQualityLevelPropertiesKHR
with pVideoProfile->videoCodecOperation specified as
VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR, the
VkVideoEncodeH265QualityLevelPropertiesKHR structure must be included
in the pNext chain of the VkVideoEncodeQualityLevelPropertiesKHR
structure to retrieve additional video encode quality level properties
specific to H.265 encoding.
The VkVideoEncodeH265QualityLevelPropertiesKHR structure is defined as:
// Provided by VK_KHR_video_encode_h265
typedef struct VkVideoEncodeH265QualityLevelPropertiesKHR {
VkStructureType sType;
void* pNext;
VkVideoEncodeH265RateControlFlagsKHR preferredRateControlFlags;
uint32_t preferredGopFrameCount;
uint32_t preferredIdrPeriod;
uint32_t preferredConsecutiveBFrameCount;
uint32_t preferredSubLayerCount;
VkVideoEncodeH265QpKHR preferredConstantQp;
uint32_t preferredMaxL0ReferenceCount;
uint32_t preferredMaxL1ReferenceCount;
} VkVideoEncodeH265QualityLevelPropertiesKHR;Members
-
sTypeis a VkStructureType value identifying this structure. -
pNextisNULLor a pointer to a structure extending this structure. -
preferredRateControlFlagsis a bitmask of VkVideoEncodeH265RateControlFlagBitsKHR values indicating the preferred flags to use for VkVideoEncodeH265RateControlInfoKHR::flags. -
preferredGopFrameCountindicates the preferred value to use for VkVideoEncodeH265RateControlInfoKHR::gopFrameCount. -
preferredIdrPeriodindicates the preferred value to use for VkVideoEncodeH265RateControlInfoKHR::idrPeriod. -
preferredConsecutiveBFrameCountindicates the preferred value to use for VkVideoEncodeH265RateControlInfoKHR::consecutiveBFrameCount. -
preferredSubLayerCountindicates the preferred value to use for VkVideoEncodeH265RateControlInfoKHR::subLayerCount. -
preferredConstantQpindicates the preferred values to use for VkVideoEncodeH265NaluSliceSegmentInfoKHR::constantQpfor each picture type when using rate control modeVK_VIDEO_ENCODE_RATE_CONTROL_MODE_DISABLED_BIT_KHR. -
preferredMaxL0ReferenceCountindicates the preferred maximum number of reference pictures to use in the reference list L0. -
preferredMaxL1ReferenceCountindicates the preferred maximum number of reference pictures to use in the reference list L1.
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.