C Specification

The VkVideoEncodeH265NaluSliceSegmentInfoKHR structure is defined as:

// Provided by VK_KHR_video_encode_h265
typedef struct VkVideoEncodeH265NaluSliceSegmentInfoKHR {
    VkStructureType                                sType;
    const void*                                    pNext;
    int32_t                                        constantQp;
    const StdVideoEncodeH265SliceSegmentHeader*    pStdSliceSegmentHeader;
} VkVideoEncodeH265NaluSliceSegmentInfoKHR;

Members

  • sType is a VkStructureType value identifying this structure.

  • pNext is NULL or a pointer to a structure extending this structure.

  • constantQp is the QP to use for the slice segment if the current rate control mode configured for the video session is VK_VIDEO_ENCODE_RATE_CONTROL_MODE_DISABLED_BIT_KHR.

  • pStdSliceSegmentHeader is a pointer to a StdVideoEncodeH265SliceSegmentHeader structure specifying H.265 slice segment header parameters for the slice segment.

Description

Std Slice Segment Header Parameters

The members of the StdVideoEncodeH265SliceSegmentHeader structure pointed to by pStdSliceSegmentHeader are interpreted as follows:

  • flags.reserved and reserved1 are used only for padding purposes and are otherwise ignored;

  • if pWeightTable is not NULL, then it is a pointer to a StdVideoEncodeH265WeightTable that is interpreted as follows:

    • flags.luma_weight_l0_flag, flags.chroma_weight_l0_flag, flags.luma_weight_l1_flag, and flags.chroma_weight_l1_flag are bitmasks where bit index i corresponds to luma_weight_l0_flag[i], chroma_weight_l0_flag[i], luma_weight_l1_flag[i], and chroma_weight_l1_flag[i], respectively, as defined in section 7.4.7.3 of the ITU-T H.265 Specification;

    • all other members of StdVideoEncodeH265WeightTable are interpreted as defined in section 7.4.7.3 of the ITU-T H.265 Specification;

  • all other members are interpreted as defined in section 7.4.7.1 of the ITU-T H.265 Specification.

Valid Usage (Implicit)

  • VUID-VkVideoEncodeH265NaluSliceSegmentInfoKHR-sType-sType
    sType must be VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_NALU_SLICE_SEGMENT_INFO_KHR

  • VUID-VkVideoEncodeH265NaluSliceSegmentInfoKHR-pNext-pNext
    pNext must be NULL

  • VUID-VkVideoEncodeH265NaluSliceSegmentInfoKHR-pStdSliceSegmentHeader-parameter
    pStdSliceSegmentHeader must be a valid pointer to a valid StdVideoEncodeH265SliceSegmentHeader value

See Also

VK_KHR_video_encode_h265, VkStructureType, VkVideoEncodeH265PictureInfoKHR

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.

Copyright

Copyright 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0