C Specification
When calling vkGetPhysicalDeviceVideoCapabilitiesKHR with
pVideoProfile->videoCodecOperation
specified as
VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_EXT
, the
VkVideoEncodeH265CapabilitiesEXT structure must be included in the
pNext
chain of the VkVideoCapabilitiesKHR structure to retrieve
more capabilities specific to H.265 video encoding.
The VkVideoEncodeH265CapabilitiesEXT
structure is defined as:
// Provided by VK_EXT_video_encode_h265
typedef struct VkVideoEncodeH265CapabilitiesEXT {
VkStructureType sType;
void* pNext;
VkVideoEncodeH265CapabilityFlagsEXT flags;
VkVideoEncodeH265InputModeFlagsEXT inputModeFlags;
VkVideoEncodeH265OutputModeFlagsEXT outputModeFlags;
VkVideoEncodeH265CtbSizeFlagsEXT ctbSizes;
VkVideoEncodeH265TransformBlockSizeFlagsEXT transformBlockSizes;
uint8_t maxPPictureL0ReferenceCount;
uint8_t maxBPictureL0ReferenceCount;
uint8_t maxL1ReferenceCount;
uint8_t maxSubLayersCount;
uint8_t minLog2MinLumaCodingBlockSizeMinus3;
uint8_t maxLog2MinLumaCodingBlockSizeMinus3;
uint8_t minLog2MinLumaTransformBlockSizeMinus2;
uint8_t maxLog2MinLumaTransformBlockSizeMinus2;
uint8_t minMaxTransformHierarchyDepthInter;
uint8_t maxMaxTransformHierarchyDepthInter;
uint8_t minMaxTransformHierarchyDepthIntra;
uint8_t maxMaxTransformHierarchyDepthIntra;
uint8_t maxDiffCuQpDeltaDepth;
uint8_t minMaxNumMergeCand;
uint8_t maxMaxNumMergeCand;
} VkVideoEncodeH265CapabilitiesEXT;
Members
-
sType
is the type of this structure. -
pNext
isNULL
or a pointer to a structure extending this structure. -
flags
is a bitmask of VkVideoEncodeH265CapabilityFlagBitsEXT describing supported encoding tools. -
inputModeFlags
is a bitmask of VkVideoEncodeH265InputModeFlagBitsEXT describing the command buffer input granularities/modes supported by the implementation. -
outputModeFlags
is a bitmask of VkVideoEncodeH265OutputModeFlagBitsEXT describing the output (bitstream size reporting) granularities/modes supported by the implementation. -
ctbSizes
is a bitmask of VkVideoEncodeH265CtbSizeFlagBitsEXT describing the supported CTB sizes. -
transformBlockSizes
is a bitmask of VkVideoEncodeH265TransformBlockSizeFlagBitsEXT describing the supported transform block sizes. -
maxPPictureL0ReferenceCount
reports the maximum number of reference pictures the implementation supports in the reference list L0 for P pictures. -
maxBPictureL0ReferenceCount
reports the maximum number of reference pictures the implementation supports in the reference list L0 for B pictures. The reported value is0
if encoding of B pictures is not supported. -
maxL1ReferenceCount
reports the maximum number of reference pictures the implementation supports in the reference list L1 if encoding of B pictures is supported. The reported value is0
if encoding of B pictures is not supported. -
maxSubLayersCount
reports the maximum number of sublayers. -
minLog2MinLumaCodingBlockSizeMinus3
reports the minimum value that may be set for log2_min_luma_coding_block_size_minus3 in StdVideoH265SequenceParameterSet. -
maxLog2MinLumaCodingBlockSizeMinus3
reports the maximum value that may be set for log2_min_luma_coding_block_size_minus3 in StdVideoH265SequenceParameterSet. -
minLog2MinLumaTransformBlockSizeMinus2
reports the minimum value that may be set for log2_min_luma_transform_block_size_minus2 in StdVideoH265SequenceParameterSet. -
maxLog2MinLumaTransformBlockSizeMinus2
reports the maximum value that may be set for log2_min_luma_transform_block_size_minus2 in StdVideoH265SequenceParameterSet. -
minMaxTransformHierarchyDepthInter
reports the minimum value that may be set for max_transform_hierarchy_depth_inter in StdVideoH265SequenceParameterSet. -
maxMaxTransformHierarchyDepthInter
reports the maximum value that may be set for max_transform_hierarchy_depth_inter in StdVideoH265SequenceParameterSet. -
minMaxTransformHierarchyDepthIntra
reports the minimum value that may be set for max_transform_hierarchy_depth_intra in StdVideoH265SequenceParameterSet. -
maxMaxTransformHierarchyDepthIntra
reports the maximum value that may be set for max_transform_hierarchy_depth_intra in StdVideoH265SequenceParameterSet. -
maxDiffCuQpDeltaDepth
reports the maximum value that may be set for diff_cu_qp_delta_depth in StdVideoH265PictureParameterSet. -
minMaxNumMergeCand
reports the minimum value that may be set for MaxNumMergeCand in StdVideoEncodeH265SliceHeader. -
maxMaxNumMergeCand
reports the maximum value that may be set for MaxNumMergeCand in StdVideoEncodeH265SliceHeader.
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.