DXVA_PicParams_HEVC_RangeExt structure (dxva.h)
The DXVA_PicParams_HEVC_RangeExt structure provides the picture-level parameters of a compressed picture for HEVC video decoding.
Syntax
typedef struct _DXVA_PicParams_HEVC_RangeExt {
DXVA_PicParams_HEVC params;
union {
struct {
USHORT transform_skip_rotation_enabled_flag : 1;
USHORT transform_skip_context_enabled_flag : 1;
USHORT implicit_rdpcm_enabled_flag : 1;
USHORT explicit_rdpcm_enabled_flag : 1;
USHORT extended_precision_processing_flag : 1;
USHORT intra_smoothing_disabled_flag : 1;
USHORT persistent_rice_adaptation_enabled_flag : 1;
USHORT high_precision_offsets_enabled_flag : 1;
USHORT cabac_bypass_alignment_enabled_flag : 1;
USHORT cross_component_prediction_enabled_flag : 1;
USHORT chroma_qp_offset_list_enabled_flag : 1;
USHORT ReservedBits8 : 5;
};
USHORT dwRangeExtensionFlags;
};
UCHAR diff_cu_chroma_qp_offset_depth;
UCHAR log2_sao_offset_scale_luma;
UCHAR log2_sao_offset_scale_chroma;
UCHAR log2_max_transform_skip_block_size_minus2;
CHAR cb_qp_offset_list[6];
CHAR cr_qp_offset_list[6];
UCHAR chroma_qp_offset_list_len_minus1;
USHORT ReservedBits9;
} DXVA_PicParams_HEVC_RangeExt, *LPDXVA_PicParams_HEVC_RangeExt;
Members
params
transform_skip_rotation_enabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
transform_skip_context_enabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
implicit_rdpcm_enabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
explicit_rdpcm_enabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
extended_precision_processing_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
intra_smoothing_disabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
persistent_rice_adaptation_enabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
high_precision_offsets_enabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
cabac_bypass_alignment_enabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
cross_component_prediction_enabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
chroma_qp_offset_list_enabled_flag
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
ReservedBits8
Reserved bit field.
dwRangeExtensionFlags
Range extension flags.
diff_cu_chroma_qp_offset_depth
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly. When the chroma_qp_offset_list_enabled_flag is 0, this value will be 0.
log2_sao_offset_scale_luma
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
log2_sao_offset_scale_chroma
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
log2_max_transform_skip_block_size_minus2
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
cb_qp_offset_list[6]
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly. When the chroma_qp_offset_list_enabled_flag is 0, this value will be 0.
cr_qp_offset_list[6]
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly. When the chroma_qp_offset_list_enabled_flag is 0, this value will be 0.
chroma_qp_offset_list_len_minus1
Corresponds to the syntax element of the same name in the HEVC specification and affects the decoding process accordingly.
ReservedBits9
Reserved.
Remarks
This structure is used when bDXVA_Func is 1 and the buffer type is DXVA2_PictureParametersBufferType (in DXVA 2.0). Note that DXVA_PicParams_HEVC_RangeExt is strictly an addition to DXVA_PicParams_HEVC; the first part of each structure is identical. For the existing profiles DXVA_ModeHEVC_VLD_Main and DXVA_ModeHEVC_VLD_Main10 accelerators are free to ignore the extra bytes in DXVA_PicParams_HEVC_RangeExt.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 11, verion 24H2 |
| Header | dxva.h |