Re: [PATCH 1/2] media: v4l: Add definitions for the HEVC slice format and controls

[Hans Verkuil]

On 08/28/2018 10:02 AM, Paul Kocialkowski wrote:
> This introduces the required definitions for HEVC decoding support with
> stateless VPUs. The controls associated to the HEVC slice format provide
> the required meta-data for decoding slices extracted from the bitstream.
> 
> This interface comes with the following limitations:
> * No custom quantization matrices (scaling lists);
> * Support for a single temporal layer only;
> * No slice entry point offsets support;
> * No conformance window support;
> * No VUI parameters support;
> * No support for SPS extensions: range, multilayer, 3d, scc, 4 bits;
> * No support for PPS extensions: range, multilayer, 3d, scc, 4 bits.
> 
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx>
> ---
>  .../media/uapi/v4l/extended-controls.rst      | 416 ++++++++++++++++++
>  .../media/uapi/v4l/pixfmt-compressed.rst      |  15 +
>  .../media/uapi/v4l/vidioc-queryctrl.rst       |  18 +
>  .../media/videodev2.h.rst.exceptions          |   3 +
>  drivers/media/v4l2-core/v4l2-ctrls.c          |  26 ++
>  drivers/media/v4l2-core/v4l2-ioctl.c          |   1 +
>  include/media/v4l2-ctrls.h                    |   6 +
>  include/uapi/linux/v4l2-controls.h            | 155 +++++++
>  include/uapi/linux/videodev2.h                |   7 +
>  9 files changed, 647 insertions(+)
> 
> diff --git a/Documentation/media/uapi/v4l/extended-controls.rst b/Documentation/media/uapi/v4l/extended-controls.rst
> index a9252225b63e..f5255bfd8434 100644
> --- a/Documentation/media/uapi/v4l/extended-controls.rst
> +++ b/Documentation/media/uapi/v4l/extended-controls.rst
> @@ -1675,6 +1675,422 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
>  	non-intra-coded frames, in zigzag scanning order. Only relevant for
>  	non-4:2:0 YUV formats.
>  
> +.. _v4l2-mpeg-hevc:
> +
> +``V4L2_CID_MPEG_VIDEO_HEVC_SPS (struct)``
> +    Specifies the Sequence Parameter Set fields (as extracted from the
> +    bitstream) for the associated HEVC slice data.
> +    The bitstream parameters are defined according to the ISO/IEC 23008-2 and
> +    ITU-T Rec. H.265 specifications.

Use proper references to these specs in biblio.rst (adding them if not there already).

> +
> +.. c:type:: v4l2_ctrl_hevc_sps
> +
> +.. cssclass:: longtable
> +
> +.. flat-table:: struct v4l2_ctrl_hevc_sps
> +    :header-rows:  0
> +    :stub-columns: 0
> +    :widths:       1 1 2
> +
> +    * - __u8
> +      - ``chroma_format_idc``
> +      - Syntax description inherited from the specification.

If you have a section number of the spec that you can refer to, then that
would be nice.

> +    * - __u8
> +      - ``separate_colour_plane_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u16
> +      - ``pic_width_in_luma_samples``
> +      - Syntax description inherited from the specification.
> +    * - __u16
> +      - ``pic_height_in_luma_samples``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``bit_depth_luma_minus8``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``bit_depth_chroma_minus8``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``log2_max_pic_order_cnt_lsb_minus4``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``sps_max_dec_pic_buffering_minus1``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``sps_max_num_reorder_pics``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``sps_max_latency_increase_plus1``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``log2_min_luma_coding_block_size_minus3``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``log2_diff_max_min_luma_coding_block_size``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``log2_min_luma_transform_block_size_minus2``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``log2_diff_max_min_luma_transform_block_size``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``max_transform_hierarchy_depth_inter``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``max_transform_hierarchy_depth_intra``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``scaling_list_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``amp_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``sample_adaptive_offset_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``pcm_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``pcm_sample_bit_depth_luma_minus1``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``pcm_sample_bit_depth_chroma_minus1``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``log2_min_pcm_luma_coding_block_size_minus3``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``log2_diff_max_min_pcm_luma_coding_block_size``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``pcm_loop_filter_disabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``num_short_term_ref_pic_sets``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``long_term_ref_pics_present_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``num_long_term_ref_pics_sps``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``sps_temporal_mvp_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``strong_intra_smoothing_enabled_flag``
> +      - Syntax description inherited from the specification.

I'd just drop the 'Syntax description inherited from the specification.' and
add that after the table. Ditto elsewhere.

> +
> +``V4L2_CID_MPEG_VIDEO_HEVC_PPS (struct)``
> +    Specifies the Picture Parameter Set fields (as extracted from the
> +    bitstream) for the associated HEVC slice data.
> +    The bitstream parameters are defined according to the ISO/IEC 23008-2 and
> +    ITU-T Rec. H.265 specifications.

Same here. I think these two specs are actually one and the same. By using a
biblio reference you can just say: "according to the HEVC/H.265 specification"
where 'HEVC/H.265 specification' is a link to the actual spec(s).

> +
> +.. c:type:: v4l2_ctrl_hevc_pps
> +
> +.. cssclass:: longtable
> +
> +.. flat-table:: struct v4l2_ctrl_hevc_pps
> +    :header-rows:  0
> +    :stub-columns: 0
> +    :widths:       1 1 2
> +
> +    * - __u8
> +      - ``dependent_slice_segment_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``output_flag_present_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``num_extra_slice_header_bits``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``sign_data_hiding_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``cabac_init_present_flag``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``init_qp_minus26``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``constrained_intra_pred_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``transform_skip_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``cu_qp_delta_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``diff_cu_qp_delta_depth``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``pps_cb_qp_offset``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``pps_cr_qp_offset``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``pps_slice_chroma_qp_offsets_present_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``weighted_pred_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``weighted_bipred_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``transquant_bypass_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``tiles_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``entropy_coding_sync_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``num_tile_columns_minus1``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``num_tile_rows_minus1``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``column_width_minus1[20]``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``row_height_minus1[22]``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``loop_filter_across_tiles_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``pps_loop_filter_across_slices_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``deblocking_filter_override_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``pps_disable_deblocking_filter_flag``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``pps_beta_offset_div2``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``pps_tc_offset_div2``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``lists_modification_present_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``log2_parallel_merge_level_minus2``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``slice_segment_header_extension_present_flag``
> +      - Syntax description inherited from the specification.
> +
> +``V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS (struct)``
> +    Specifies various slice-specific parameters, especially from the NAL unit
> +    header, general slice segment header and weighted prediction parameter
> +    parts of the bitstream.
> +    The bitstream parameters are defined according to the ISO/IEC 23008-2 and
> +    ITU-T Rec. H.265 specifications.
> +
> +.. c:type:: v4l2_ctrl_hevc_slice_params
> +
> +.. cssclass:: longtable
> +
> +.. flat-table:: struct v4l2_ctrl_hevc_slice_params
> +    :header-rows:  0
> +    :stub-columns: 0
> +    :widths:       1 1 2
> +
> +    * - __u32
> +      - ``bit_size``
> +      - Size (in bits) of the current slice data.
> +    * - __u32
> +      - ``data_bit_offset``
> +      - Offset (in bits) to the video data in the current slice data.
> +    * - __u8
> +      - ``nal_unit_type``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``nuh_temporal_id_plus1``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``slice_type``
> +      - Syntax description inherited from the specification.
> +	(V4L2_HEVC_SLICE_TYPE_I, V4L2_HEVC_SLICE_TYPE_P or
> +	V4L2_HEVC_SLICE_TYPE_B).
> +    * - __u8
> +      - ``colour_plane_id``
> +      - Syntax description inherited from the specification.
> +    * - __u16
> +      - ``slice_pic_order_cnt``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``slice_sao_luma_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``slice_sao_chroma_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``slice_temporal_mvp_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``num_ref_idx_l0_active_minus1``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``num_ref_idx_l1_active_minus1``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``mvd_l1_zero_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``cabac_init_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``collocated_from_l0_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``collocated_ref_idx``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``five_minus_max_num_merge_cand``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``use_integer_mv_flag``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``slice_qp_delta``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``slice_cb_qp_offset``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``slice_cr_qp_offset``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``slice_act_y_qp_offset``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``slice_act_cb_qp_offset``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``slice_act_cr_qp_offset``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``slice_deblocking_filter_disabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``slice_beta_offset_div2``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``slice_tc_offset_div2``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``slice_loop_filter_across_slices_enabled_flag``
> +      - Syntax description inherited from the specification.
> +    * - __u8
> +      - ``pic_struct``
> +      - Syntax description inherited from the specification.
> +    * - struct :c:type:`v4l2_hevc_dpb_entry`
> +      - ``dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
> +      - The decoded picture buffer, for meta-data about reference frames.
> +    * - __u8
> +      - ``num_active_dpb_entries``
> +      - The number of entries in ``dpb``.
> +    * - __u8
> +      - ``ref_idx_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
> +      - The list of L0 reference elements as indices in the DPB.
> +    * - __u8
> +      - ``ref_idx_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
> +      - The list of L1 reference elements as indices in the DPB.
> +    * - __u8
> +      - ``num_rps_poc_st_curr_before``
> +      - The number of reference pictures in the short-term set that come before
> +        the current frame.
> +    * - __u8
> +      - ``num_rps_poc_st_curr_after``
> +      - The number of reference pictures in the short-term set that come after
> +        the current frame.
> +    * - __u8
> +      - ``num_rps_poc_lt_curr``
> +      - The number of reference pictures in the long-term set.
> +    * - struct :c:type:`v4l2_hevc_pred_weight_table`
> +      - ``pred_weight_table``
> +      - The prediction weight coefficients for inter-picture prediction.
> +
> +.. c:type:: v4l2_hevc_dpb_entry
> +
> +.. cssclass:: longtable
> +
> +.. flat-table:: struct v4l2_hevc_dpb_entry
> +    :header-rows:  0
> +    :stub-columns: 0
> +    :widths:       1 1 2
> +
> +    * - __u32
> +      - ``buffer_index``
> +      - The V4L2 buffer index that matches the associated reference picture.
> +    * - __u8
> +      - ``rps``
> +      - The reference set for the reference frame
> +        (V4L2_HEVC_DPB_ENTRY_RPS_ST_CURR_BEFORE,
> +        V4L2_HEVC_DPB_ENTRY_RPS_ST_CURR_AFTER or
> +        V4L2_HEVC_DPB_ENTRY_RPS_LT_CURR)
> +    * - __u8
> +      - ``field_pic``
> +      - Whether the reference is a field picture or a frame.
> +    * - __u16
> +      - ``pic_order_cnt[2]``
> +      - Le picture order count of the reference. Only the first element of the

Le -> The

> +        array is used for frame pictures, while the first element identifies the
> +        top field and the second the bottom field in field-coded pictures.
> +
> +.. c:type:: v4l2_hevc_pred_weight_table
> +
> +.. cssclass:: longtable
> +
> +.. flat-table:: struct v4l2_hevc_pred_weight_table
> +    :header-rows:  0
> +    :stub-columns: 0
> +    :widths:       1 1 2
> +
> +    * - __u8
> +      - ``luma_log2_weight_denom``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``delta_chroma_log2_weight_denom``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``delta_luma_weight_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``luma_offset_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``delta_chroma_weight_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2]``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``chroma_offset_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2]``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``delta_luma_weight_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``luma_offset_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``delta_chroma_weight_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2]``
> +      - Syntax description inherited from the specification.
> +    * - __s8
> +      - ``chroma_offset_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2]``
> +      - Syntax description inherited from the specification.
> +
>  MFC 5.1 MPEG Controls
>  ---------------------
>  
> diff --git a/Documentation/media/uapi/v4l/pixfmt-compressed.rst b/Documentation/media/uapi/v4l/pixfmt-compressed.rst
> index a86b59f770dd..a1a19890df4c 100644
> --- a/Documentation/media/uapi/v4l/pixfmt-compressed.rst
> +++ b/Documentation/media/uapi/v4l/pixfmt-compressed.rst
> @@ -109,6 +109,21 @@ Compressed Formats
>        - ``V4L2_PIX_FMT_HEVC``
>        - 'HEVC'
>        - HEVC/H.265 video elementary stream.
> +    * .. _V4L2-PIX-FMT-HEVC-SLICE:
> +
> +      - ``V4L2_PIX_FMT_HEVC_SLICE``
> +      - 'S265'
> +      - HEVC parsed slice data, as extracted from the HEVC bitstream.
> +	This format is adapted for stateless video decoders that implement a
> +	HEVC pipeline (using the Memory to Memory and Media Request APIs).

Should be references to these two sections of the spec.

> +	Metadata associated with the frame to decode is required to be passed
> +	through the following controls :
> +        * ``V4L2_CID_MPEG_VIDEO_HEVC_SPS``
> +        * ``V4L2_CID_MPEG_VIDEO_HEVC_PPS``
> +        * ``V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS``
> +	See the :ref:`associated Codec Control IDs <v4l2-mpeg-hevc>`.
> +	Buffers associated with this pixel format must contain the appropriate
> +	number of macroblocks to decode a full corresponding frame.
>      * .. _V4L2-PIX-FMT-FWHT:
>  
>        - ``V4L2_PIX_FMT_FWHT``
> diff --git a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst
> index 258f5813f281..1f5aa8ad68fa 100644
> --- a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst
> +++ b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst
> @@ -436,6 +436,24 @@ See also the examples in :ref:`control`.
>        - n/a
>        - A struct :c:type:`v4l2_ctrl_mpeg2_quantization`, containing MPEG-2
>  	quantization matrices for stateless video decoders.
> +    * - ``V4L2_CTRL_TYPE_HEVC_SPS``
> +      - n/a
> +      - n/a
> +      - n/a
> +      - A struct :c:type:`v4l2_ctrl_hevc_sps`, containing HEVC Sequence
> +	Parameter Set for stateless video decoders.
> +    * - ``V4L2_CTRL_TYPE_HEVC_PPS``
> +      - n/a
> +      - n/a
> +      - n/a
> +      - A struct :c:type:`v4l2_ctrl_hevc_pps`, containing HEVC Picture
> +	Parameter Set for stateless video decoders.
> +    * - ``V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS``
> +      - n/a
> +      - n/a
> +      - n/a
> +      - A struct :c:type:`v4l2_ctrl_hevc_slice_params`, containing HEVC
> +	slice parameters for stateless video decoders.
>  
>  .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}|
>  
> diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions
> index 30ba0d6f546f..7640ce6dadc9 100644
> --- a/Documentation/media/videodev2.h.rst.exceptions
> +++ b/Documentation/media/videodev2.h.rst.exceptions
> @@ -131,6 +131,9 @@ replace symbol V4L2_CTRL_TYPE_U32 :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_U8 :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_MPEG2_QUANTIZATION :c:type:`v4l2_ctrl_type`
> +replace symbol V4L2_CTRL_TYPE_HEVC_SPS :c:type:`v4l2_ctrl_type`
> +replace symbol V4L2_CTRL_TYPE_HEVC_PPS :c:type:`v4l2_ctrl_type`
> +replace symbol V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS :c:type:`v4l2_ctrl_type`
>  
>  # V4L2 capability defines
>  replace define V4L2_CAP_VIDEO_CAPTURE device-capabilities
> diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
> index 2b1022d7c617..c9c40e693a93 100644
> --- a/drivers/media/v4l2-core/v4l2-ctrls.c
> +++ b/drivers/media/v4l2-core/v4l2-ctrls.c
> @@ -913,6 +913,9 @@ const char *v4l2_ctrl_get_name(u32 id)
>  	case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:	return "HEVC Size of Length Field";
>  	case V4L2_CID_MPEG_VIDEO_REF_NUMBER_FOR_PFRAMES:	return "Reference Frames for a P-Frame";
>  	case V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR:		return "Prepend SPS and PPS to IDR";
> +	case V4L2_CID_MPEG_VIDEO_HEVC_SPS:			return "HEVC Sequence Parameter Set";
> +	case V4L2_CID_MPEG_VIDEO_HEVC_PPS:			return "HEVC Picture Parameter Set";
> +	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:		return "HEVC Slice Parameters";
>  
>  	/* CAMERA controls */
>  	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
> @@ -1320,6 +1323,15 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
>  	case V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS:
>  		*type = V4L2_CTRL_TYPE_H264_DECODE_PARAMS;
>  		break;
> +	case V4L2_CID_MPEG_VIDEO_HEVC_SPS:
> +		*type = V4L2_CTRL_TYPE_HEVC_SPS;
> +		break;
> +	case V4L2_CID_MPEG_VIDEO_HEVC_PPS:
> +		*type = V4L2_CTRL_TYPE_HEVC_PPS;
> +		break;
> +	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:
> +		*type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS;
> +		break;
>  	default:
>  		*type = V4L2_CTRL_TYPE_INTEGER;
>  		break;
> @@ -1696,6 +1708,11 @@ static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx,
>  	case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
>  		return 0;
>  
> +	case V4L2_CTRL_TYPE_HEVC_SPS:
> +	case V4L2_CTRL_TYPE_HEVC_PPS:
> +	case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
> +		return 0;
> +
>  	default:
>  		return -EINVAL;
>  	}
> @@ -2291,6 +2308,15 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
>  	case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
>  		elem_size = sizeof(struct v4l2_ctrl_h264_decode_param);
>  		break;
> +	case V4L2_CTRL_TYPE_HEVC_SPS:
> +		elem_size = sizeof(struct v4l2_ctrl_hevc_sps);
> +		break;
> +	case V4L2_CTRL_TYPE_HEVC_PPS:
> +		elem_size = sizeof(struct v4l2_ctrl_hevc_pps);
> +		break;
> +	case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
> +		elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params);
> +		break;
>  	default:
>  		if (type < V4L2_CTRL_COMPOUND_TYPES)
>  			elem_size = sizeof(s32);
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 0507a19079fe..a121f96912bf 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -1318,6 +1318,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
>  		case V4L2_PIX_FMT_VP8:		descr = "VP8"; break;
>  		case V4L2_PIX_FMT_VP9:		descr = "VP9"; break;
>  		case V4L2_PIX_FMT_HEVC:		descr = "HEVC"; break; /* aka H.265 */
> +		case V4L2_PIX_FMT_HEVC_SLICE:	descr = "HEVC Parsed Slice Data"; break;
>  		case V4L2_PIX_FMT_FWHT:		descr = "FWHT"; break; /* used in vicodec */
>  		case V4L2_PIX_FMT_CPIA1:	descr = "GSPCA CPiA YUV"; break;
>  		case V4L2_PIX_FMT_WNVA:		descr = "WNVA"; break;
> diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
> index 4814dd4a763e..8d4763ea1e1f 100644
> --- a/include/media/v4l2-ctrls.h
> +++ b/include/media/v4l2-ctrls.h
> @@ -48,6 +48,9 @@ struct poll_table_struct;
>   * @p_h264_scal_mtrx:		Pointer to a struct v4l2_ctrl_h264_scaling_matrix.
>   * @p_h264_slice_param:		Pointer to a struct v4l2_ctrl_h264_slice_param.
>   * @p_h264_decode_param:	Pointer to a struct v4l2_ctrl_h264_decode_param.
> + * @p_hevc_sps:			Pointer to an HEVC sequence parameter set structure.
> + * @p_hevc_pps:			Pointer to an HEVC picture parameter set structure.
> + * @p_hevc_slice_params		Pointer to an HEVC slice parameters structure.
>   * @p:				Pointer to a compound value.
>   */
>  union v4l2_ctrl_ptr {
> @@ -64,6 +67,9 @@ union v4l2_ctrl_ptr {
>  	struct v4l2_ctrl_h264_scaling_matrix *p_h264_scal_mtrx;
>  	struct v4l2_ctrl_h264_slice_param *p_h264_slice_param;
>  	struct v4l2_ctrl_h264_decode_param *p_h264_decode_param;
> +	struct v4l2_ctrl_hevc_sps *p_hevc_sps;
> +	struct v4l2_ctrl_hevc_pps *p_hevc_pps;
> +	struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
>  	void *p;
>  };
>  
> diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
> index c41d5beab9b4..a914e6df8f98 100644
> --- a/include/uapi/linux/v4l2-controls.h
> +++ b/include/uapi/linux/v4l2-controls.h
> @@ -707,6 +707,9 @@ enum v4l2_cid_mpeg_video_hevc_size_of_length_field {
>  #define V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_BR	(V4L2_CID_MPEG_BASE + 642)
>  #define V4L2_CID_MPEG_VIDEO_REF_NUMBER_FOR_PFRAMES	(V4L2_CID_MPEG_BASE + 643)
>  #define V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR	(V4L2_CID_MPEG_BASE + 644)
> +#define V4L2_CID_MPEG_VIDEO_HEVC_SPS			(V4L2_CID_MPEG_BASE + 645)
> +#define V4L2_CID_MPEG_VIDEO_HEVC_PPS			(V4L2_CID_MPEG_BASE + 646)
> +#define V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS		(V4L2_CID_MPEG_BASE + 647)
>  
>  /*  MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */
>  #define V4L2_CID_MPEG_CX2341X_BASE				(V4L2_CTRL_CLASS_MPEG | 0x1000)
> @@ -1323,4 +1326,156 @@ struct v4l2_ctrl_h264_decode_param {
>  	struct v4l2_h264_dpb_entry dpb[16];
>  };
>  
> +#define V4L2_HEVC_SLICE_TYPE_B	0
> +#define V4L2_HEVC_SLICE_TYPE_P	1
> +#define V4L2_HEVC_SLICE_TYPE_I	2
> +
> +struct v4l2_ctrl_hevc_sps {
> +	/* ISO/IEC 23008-2, ITU-T Rec. H.265: Sequence parameter set */
> +	__u8	chroma_format_idc;
> +	__u8	separate_colour_plane_flag;
> +	__u16	pic_width_in_luma_samples;
> +	__u16	pic_height_in_luma_samples;
> +	__u8	bit_depth_luma_minus8;
> +	__u8	bit_depth_chroma_minus8;
> +	__u8	log2_max_pic_order_cnt_lsb_minus4;
> +	__u8	sps_max_dec_pic_buffering_minus1;
> +	__u8	sps_max_num_reorder_pics;
> +	__u8	sps_max_latency_increase_plus1;
> +	__u8	log2_min_luma_coding_block_size_minus3;
> +	__u8	log2_diff_max_min_luma_coding_block_size;
> +	__u8	log2_min_luma_transform_block_size_minus2;
> +	__u8	log2_diff_max_min_luma_transform_block_size;
> +	__u8	max_transform_hierarchy_depth_inter;
> +	__u8	max_transform_hierarchy_depth_intra;
> +	__u8	scaling_list_enabled_flag;
> +	__u8	amp_enabled_flag;
> +	__u8	sample_adaptive_offset_enabled_flag;
> +	__u8	pcm_enabled_flag;
> +	__u8	pcm_sample_bit_depth_luma_minus1;
> +	__u8	pcm_sample_bit_depth_chroma_minus1;
> +	__u8	log2_min_pcm_luma_coding_block_size_minus3;
> +	__u8	log2_diff_max_min_pcm_luma_coding_block_size;
> +	__u8	pcm_loop_filter_disabled_flag;
> +	__u8	num_short_term_ref_pic_sets;
> +	__u8	long_term_ref_pics_present_flag;
> +	__u8	num_long_term_ref_pics_sps;
> +	__u8	sps_temporal_mvp_enabled_flag;
> +	__u8	strong_intra_smoothing_enabled_flag;
> +};
> +
> +struct v4l2_ctrl_hevc_pps {
> +	/* ISO/IEC 23008-2, ITU-T Rec. H.265: Picture parameter set */
> +	__u8	dependent_slice_segment_flag;
> +	__u8	output_flag_present_flag;
> +	__u8	num_extra_slice_header_bits;
> +	__u8	sign_data_hiding_enabled_flag;
> +	__u8	cabac_init_present_flag;
> +	__s8	init_qp_minus26;
> +	__u8	constrained_intra_pred_flag;
> +	__u8	transform_skip_enabled_flag;
> +	__u8	cu_qp_delta_enabled_flag;
> +	__u8	diff_cu_qp_delta_depth;
> +	__s8	pps_cb_qp_offset;
> +	__s8	pps_cr_qp_offset;
> +	__u8	pps_slice_chroma_qp_offsets_present_flag;
> +	__u8	weighted_pred_flag;
> +	__u8	weighted_bipred_flag;
> +	__u8	transquant_bypass_enabled_flag;
> +	__u8	tiles_enabled_flag;
> +	__u8	entropy_coding_sync_enabled_flag;
> +	__u8	num_tile_columns_minus1;
> +	__u8	num_tile_rows_minus1;
> +	__u8	column_width_minus1[20];
> +	__u8	row_height_minus1[22];
> +	__u8	loop_filter_across_tiles_enabled_flag;
> +	__u8	pps_loop_filter_across_slices_enabled_flag;
> +	__u8	deblocking_filter_override_enabled_flag;
> +	__u8	pps_disable_deblocking_filter_flag;
> +	__s8	pps_beta_offset_div2;
> +	__s8	pps_tc_offset_div2;
> +	__u8	lists_modification_present_flag;
> +	__u8	log2_parallel_merge_level_minus2;
> +	__u8	slice_segment_header_extension_present_flag;
> +};
> +
> +#define V4L2_HEVC_DPB_ENTRY_RPS_ST_CURR_BEFORE	0x01
> +#define V4L2_HEVC_DPB_ENTRY_RPS_ST_CURR_AFTER	0x02
> +#define V4L2_HEVC_DPB_ENTRY_RPS_LT_CURR		0x03
> +
> +#define V4L2_HEVC_DPB_ENTRIES_NUM_MAX		16
> +
> +struct v4l2_hevc_dpb_entry {
> +	__u32	buffer_index;
> +	__u8	rps;
> +	__u8	field_pic;
> +	__u16	pic_order_cnt[2];
> +};
> +
> +struct v4l2_hevc_pred_weight_table {
> +	__u8	luma_log2_weight_denom;
> +	__s8	delta_chroma_log2_weight_denom;
> +
> +	__s8	delta_luma_weight_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
> +	__s8	luma_offset_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
> +	__s8	delta_chroma_weight_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2];
> +	__s8	chroma_offset_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2];
> +
> +	__s8	delta_luma_weight_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
> +	__s8	luma_offset_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
> +	__s8	delta_chroma_weight_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2];
> +	__s8	chroma_offset_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2];
> +};
> +
> +struct v4l2_ctrl_hevc_slice_params {
> +	__u32	bit_size;
> +	__u32	data_bit_offset;
> +
> +	/* ISO/IEC 23008-2, ITU-T Rec. H.265: NAL unit header */
> +	__u8	nal_unit_type;
> +	__u8	nuh_temporal_id_plus1;
> +
> +	/* ISO/IEC 23008-2, ITU-T Rec. H.265: General slice segment header */
> +	__u8	slice_type;
> +	__u8	colour_plane_id;
> +	__u16	slice_pic_order_cnt;
> +	__u8	slice_sao_luma_flag;
> +	__u8	slice_sao_chroma_flag;
> +	__u8	slice_temporal_mvp_enabled_flag;
> +	__u8	num_ref_idx_l0_active_minus1;
> +	__u8	num_ref_idx_l1_active_minus1;
> +	__u8	mvd_l1_zero_flag;
> +	__u8	cabac_init_flag;
> +	__u8	collocated_from_l0_flag;
> +	__u8	collocated_ref_idx;
> +	__u8	five_minus_max_num_merge_cand;
> +	__u8	use_integer_mv_flag;
> +	__s8	slice_qp_delta;
> +	__s8	slice_cb_qp_offset;
> +	__s8	slice_cr_qp_offset;
> +	__s8	slice_act_y_qp_offset;
> +	__s8	slice_act_cb_qp_offset;
> +	__s8	slice_act_cr_qp_offset;
> +	__u8	slice_deblocking_filter_disabled_flag;
> +	__s8	slice_beta_offset_div2;
> +	__s8	slice_tc_offset_div2;
> +	__u8	slice_loop_filter_across_slices_enabled_flag;
> +
> +	/* ISO/IEC 23008-2, ITU-T Rec. H.265: Picture timing SEI message */
> +	__u8	pic_struct;
> +
> +	/* ISO/IEC 23008-2, ITU-T Rec. H.265: General slice segment header */
> +	struct v4l2_hevc_dpb_entry dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
> +	__u8	num_active_dpb_entries;
> +	__u8	ref_idx_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
> +	__u8	ref_idx_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
> +
> +	__u8	num_rps_poc_st_curr_before;
> +	__u8	num_rps_poc_st_curr_after;
> +	__u8	num_rps_poc_lt_curr;
> +
> +	/* ISO/IEC 23008-2, ITU-T Rec. H.265: Weighted prediction parameter */
> +	struct v4l2_hevc_pred_weight_table pred_weight_table;
> +};
> +
>  #endif
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 9a00f5fcd3cd..e582c6bb0ab9 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -644,6 +644,7 @@ struct v4l2_pix_format {
>  #define V4L2_PIX_FMT_VP8      v4l2_fourcc('V', 'P', '8', '0') /* VP8 */
>  #define V4L2_PIX_FMT_VP9      v4l2_fourcc('V', 'P', '9', '0') /* VP9 */
>  #define V4L2_PIX_FMT_HEVC     v4l2_fourcc('H', 'E', 'V', 'C') /* HEVC aka H.265 */
> +#define V4L2_PIX_FMT_HEVC_SLICE v4l2_fourcc('S', '2', '6', '5') /* H265 parsed slices */
>  #define V4L2_PIX_FMT_FWHT     v4l2_fourcc('F', 'W', 'H', 'T') /* Fast Walsh Hadamard Transform (vicodec) */
>  
>  /*  Vendor-specific formats   */
> @@ -1611,6 +1612,9 @@ struct v4l2_ext_control {
>  		struct v4l2_ctrl_h264_scaling_matrix __user *p_h264_scal_mtrx;
>  		struct v4l2_ctrl_h264_slice_param __user *p_h264_slice_param;
>  		struct v4l2_ctrl_h264_decode_param __user *p_h264_decode_param;
> +		struct v4l2_ctrl_hevc_sps __user *p_hevc_sps;
> +		struct v4l2_ctrl_hevc_pps __user *p_hevc_pps;
> +		struct v4l2_ctrl_hevc_slice_params __user *p_hevc_slice_params;
>  		void __user *ptr;
>  	};
>  } __attribute__ ((packed));
> @@ -1663,6 +1667,9 @@ enum v4l2_ctrl_type {
>  	V4L2_CTRL_TYPE_H264_SCALING_MATRIX = 0x0107,
>  	V4L2_CTRL_TYPE_H264_SLICE_PARAMS = 0x0108,
>  	V4L2_CTRL_TYPE_H264_DECODE_PARAMS = 0x0109,
> +	V4L2_CTRL_TYPE_HEVC_SPS = 0x0110,
> +	V4L2_CTRL_TYPE_HEVC_PPS = 0x0111,
> +	V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS = 0x0112,
>  };
>  
>  /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
> 

Regards,

	Hans