.. _v4l2-mpeg-hevc:
-``V4L2_CID_MPEG_VIDEO_HEVC_SPS (struct)``
+``V4L2_CID_STATELESS_HEVC_SPS (struct)``
Specifies the Sequence Parameter Set fields (as extracted from the
bitstream) for the associated HEVC slice data.
These bitstream parameters are defined according to :ref:`hevc`.
:stub-columns: 0
:widths: 1 1 2
+ * - __u8
+ - ``video_parameter_set_id``
+ - Specifies the value of the vps_video_parameter_set_id of the active VPS
+ as described in section "7.4.3.2.1 General sequence parameter set RBSP semantics"
+ of H.265 specifications.
+ * - __u8
+ - ``seq_parameter_set_id``
+ - Provides an identifier for the SPS for reference by other syntax elements
+ as described in section "7.4.3.2.1 General sequence parameter set RBSP semantics"
+ of H.265 specifications.
* - __u16
- ``pic_width_in_luma_samples``
- -
+ - Specifies the width of each decoded picture in units of luma samples.
* - __u16
- ``pic_height_in_luma_samples``
- -
+ - Specifies the height of each decoded picture in units of luma samples.
* - __u8
- ``bit_depth_luma_minus8``
- -
+ - This value plus 8 specifies the bit depth of the samples of the luma array.
* - __u8
- ``bit_depth_chroma_minus8``
- -
+ - This value plus 8 specifies the bit depth of the samples of the chroma arrays.
* - __u8
- ``log2_max_pic_order_cnt_lsb_minus4``
- -
+ - This value plus 4 specifies the value of the variable MaxPicOrderCntLsb.
* - __u8
- ``sps_max_dec_pic_buffering_minus1``
- -
+ - This value plus 1 specifies the maximum required size of the decoded picture buffer for
+ the codec video sequence.
* - __u8
- ``sps_max_num_reorder_pics``
- -
+ - Indicates the maximum allowed number of pictures.
* - __u8
- ``sps_max_latency_increase_plus1``
- -
+ - Not equal to 0 is used to compute the value of SpsMaxLatencyPictures array.
* - __u8
- ``log2_min_luma_coding_block_size_minus3``
- -
+ - This value plus 3 specifies the minimum luma coding block size.
* - __u8
- ``log2_diff_max_min_luma_coding_block_size``
- -
+ - Specifies the difference between the maximum and minimum luma coding block size.
* - __u8
- ``log2_min_luma_transform_block_size_minus2``
- -
+ - This value plus 2 specifies the minimum luma transform block size.
* - __u8
- ``log2_diff_max_min_luma_transform_block_size``
- -
+ - Specifies the difference between the maximum and minimum luma transform block size.
* - __u8
- ``max_transform_hierarchy_depth_inter``
- -
+ - Specifies the maximum hierarchy depth for transform units of coding units coded
+ in inter prediction mode.
* - __u8
- ``max_transform_hierarchy_depth_intra``
- -
+ - Specifies the maximum hierarchy depth for transform units of coding units coded in
+ intra prediction mode.
* - __u8
- ``pcm_sample_bit_depth_luma_minus1``
- -
+ - This value plus 1 specifies the number of bits used to represent each of PCM sample
+ values of the luma component.
* - __u8
- ``pcm_sample_bit_depth_chroma_minus1``
- -
+ - This value plus 1 specifies the number of bits used to represent each of PCM sample
+ values of the chroma components.
* - __u8
- ``log2_min_pcm_luma_coding_block_size_minus3``
- -
+ - This value plus 3 specifies the minimum size of coding blocks.
* - __u8
- ``log2_diff_max_min_pcm_luma_coding_block_size``
- -
+ - Specifies the difference between the maximum and minimum size of coding blocks.
* - __u8
- ``num_short_term_ref_pic_sets``
- -
+ - Specifies the number of st_ref_pic_set() syntax structures included in the SPS.
* - __u8
- ``num_long_term_ref_pics_sps``
- -
+ - Specifies the number of candidate long-term reference pictures that are
+ specified in the SPS.
* - __u8
- ``chroma_format_idc``
- -
+ - Specifies the chroma sampling.
* - __u8
- ``sps_max_sub_layers_minus1``
- -
+ - This value plus 1 specifies the maximum number of temporal sub-layers.
* - __u64
- ``flags``
- See :ref:`Sequence Parameter Set Flags <hevc_sps_flags>`
\normalsize
-``V4L2_CID_MPEG_VIDEO_HEVC_PPS (struct)``
+``V4L2_CID_STATELESS_HEVC_PPS (struct)``
Specifies the Picture Parameter Set fields (as extracted from the
bitstream) for the associated HEVC slice data.
These bitstream parameters are defined according to :ref:`hevc`.
:widths: 1 1 2
* - __u8
+ - ``pic_parameter_set_id``
+ - Identifies the PPS for reference by other syntax elements.
+ * - __u8
- ``num_extra_slice_header_bits``
- -
+ - Specifies the number of extra slice header bits that are present
+ in the slice header RBSP for coded pictures referring to the PPS.
* - __u8
- ``num_ref_idx_l0_default_active_minus1``
- - Specifies the inferred value of num_ref_idx_l0_active_minus1
+ - This value plus 1 specifies the inferred value of num_ref_idx_l0_active_minus1.
* - __u8
- ``num_ref_idx_l1_default_active_minus1``
- - Specifies the inferred value of num_ref_idx_l1_active_minus1
+ - This value plus 1 specifies the inferred value of num_ref_idx_l1_active_minus1.
* - __s8
- ``init_qp_minus26``
- -
+ - This value plus 26 specifies the initial value of SliceQp Y for each slice
+ referring to the PPS.
* - __u8
- ``diff_cu_qp_delta_depth``
- -
+ - Specifies the difference between the luma coding tree block size
+ and the minimum luma coding block size of coding units that
+ convey cu_qp_delta_abs and cu_qp_delta_sign_flag.
* - __s8
- ``pps_cb_qp_offset``
- -
+ - Specifies the offsets to the luma quantization parameter Cb.
* - __s8
- ``pps_cr_qp_offset``
- -
+ - Specifies the offsets to the luma quantization parameter Cr.
* - __u8
- ``num_tile_columns_minus1``
- -
+ - This value plus 1 specifies the number of tile columns partitioning the picture.
* - __u8
- ``num_tile_rows_minus1``
- -
+ - This value plus 1 specifies the number of tile rows partitioning the picture.
* - __u8
- ``column_width_minus1[20]``
- -
+ - Plus 1 specifies the width of each tile column in units of
+ coding tree blocks.
* - __u8
- ``row_height_minus1[22]``
- -
+ - This value plus 1 specifies the height of each tile row in units of coding
+ tree blocks.
* - __s8
- ``pps_beta_offset_div2``
- -
+ - Specifies the default deblocking parameter offsets for beta divided by 2.
* - __s8
- ``pps_tc_offset_div2``
- -
+ - Specifies the default deblocking parameter offsets for tC divided by 2.
* - __u8
- ``log2_parallel_merge_level_minus2``
- -
+ - Plus 2 specifies the value of the variable Log2ParMrgLevel.
* - __u8
- ``padding[4]``
- Applications and drivers must set this to zero.
\normalsize
-``V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS (struct)``
+``V4L2_CID_STATELESS_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.
These bitstream parameters are defined according to :ref:`hevc`.
They are described in section 7.4.7 "General slice segment header
semantics" of the specification.
+ This control is a dynamically sized 1-dimensional array,
+ V4L2_CTRL_FLAG_DYNAMIC_ARRAY flag must be set when using it.
.. c:type:: v4l2_ctrl_hevc_slice_params
- Offset (in bits) to the video data in the current slice data.
* - __u8
- ``nal_unit_type``
- -
+ - Specifies the coding type of the slice (B, P or I).
* - __u8
- ``nuh_temporal_id_plus1``
- -
+ - This value minus 1 specifies a temporal identifier for the NAL unit.
* - __u8
- ``slice_type``
-
V4L2_HEVC_SLICE_TYPE_B).
* - __u8
- ``colour_plane_id``
- -
- * - __u16
+ - Specifies the colour plane associated with the current slice.
+ * - __s32
- ``slice_pic_order_cnt``
- -
+ - Specifies the picture order count.
* - __u8
- ``num_ref_idx_l0_active_minus1``
- -
+ - This value plus 1 specifies the maximum reference index for
+ reference picture list 0 that may be used to decode the slice.
* - __u8
- ``num_ref_idx_l1_active_minus1``
- -
+ - This value plus 1 specifies the maximum reference index for
+ reference picture list 1 that may be used to decode the slice.
* - __u8
- ``collocated_ref_idx``
- -
+ - Specifies the reference index of the collocated picture used for
+ temporal motion vector prediction.
* - __u8
- ``five_minus_max_num_merge_cand``
- -
+ - Specifies the maximum number of merging motion vector prediction
+ candidates supported in the slice subtracted from 5.
* - __s8
- ``slice_qp_delta``
- -
+ - Specifies the initial value of QpY to be used for the coding blocks in the slice.
* - __s8
- ``slice_cb_qp_offset``
- -
+ - Specifies a difference to be added to the value of pps_cb_qp_offset.
* - __s8
- ``slice_cr_qp_offset``
- -
+ - Specifies a difference to be added to the value of pps_cr_qp_offset.
* - __s8
- ``slice_act_y_qp_offset``
- -
+ - Screen content extension parameters.
* - __s8
- ``slice_act_cb_qp_offset``
- -
+ - Screen content extension parameters.
* - __s8
- ``slice_act_cr_qp_offset``
- -
+ - Screen content extension parameters.
* - __s8
- ``slice_beta_offset_div2``
- -
+ - Specifies the deblocking parameter offsets for beta divided by 2.
* - __s8
- ``slice_tc_offset_div2``
- -
+ - Specifies the deblocking parameter offsets for tC divided by 2.
* - __u8
- ``pic_struct``
- -
+ - Indicates whether a picture should be displayed as a frame or as one or more fields.
* - __u32
- ``slice_segment_addr``
- -
+ - Specifies the address of the first coding tree block in the slice segment.
* - __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.
+ * - __u16
+ - ``short_term_ref_pic_set_size``
+ - Specifies the size, in bits, of the short-term reference picture set, described as st_ref_pic_set()
+ in the specification, included in the slice header or SPS (section 7.3.6.1).
+ * - __u16
+ - ``long_term_ref_pic_set_size``
+ - Specifies the size, in bits, of the long-term reference picture set include in the slice header
+ or SPS. It is the number of bits in the conditional block if(long_term_ref_pics_present_flag)
+ in section 7.3.6.1 of the specification.
* - __u8
- ``padding``
- Applications and drivers must set this to zero.
\normalsize
-``V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX (struct)``
+``V4L2_CID_STATELESS_HEVC_SCALING_MATRIX (struct)``
Specifies the HEVC scaling matrix parameters used for the scaling process
for transform coefficients.
These matrix and parameters are defined according to :ref:`hevc`.
* - __u8
- ``field_pic``
- Whether the reference is a field picture or a frame.
- * - __u16
- - ``pic_order_cnt[2]``
- - The picture order count of the reference. Only the first element of 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.
+ See :ref:`HEVC dpb field pic Flags <hevc_dpb_field_pic_flags>`
+ * - __s32
+ - ``pic_order_cnt_val``
+ - The picture order count of the current picture.
* - __u8
- ``padding[2]``
- Applications and drivers must set this to zero.
\normalsize
+.. _hevc_dpb_field_pic_flags:
+
+``HEVC dpb field pic Flags``
+
+.. raw:: latex
+
+ \scriptsize
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_FRAME``
+ - 0
+ - (progressive) Frame
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_FIELD``
+ - 1
+ - Top field
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_FIELD``
+ - 2
+ - Bottom field
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_BOTTOM``
+ - 3
+ - Top field, bottom field, in that order
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_TOP``
+ - 4
+ - Bottom field, top field, in that order
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_BOTTOM_TOP``
+ - 5
+ - Top field, bottom field, top field repeated, in that order
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM``
+ - 6
+ - Bottom field, top field, bottom field repeated, in that order
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING``
+ - 7
+ - Frame doubling
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING``
+ - 8
+ - Frame tripling
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_PAIRED_PREVIOUS_BOTTOM``
+ - 9
+ - Top field paired with previous bottom field in output order
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_PAIRED_PREVIOUS_TOP``
+ - 10
+ - Bottom field paired with previous top field in output order
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_TOP_PAIRED_NEXT_BOTTOM``
+ - 11
+ - Top field paired with next bottom field in output order
+ * - ``V4L2_HEVC_SEI_PIC_STRUCT_BOTTOM_PAIRED_NEXT_TOP``
+ - 12
+ - Bottom field paired with next top field in output order
+
.. c:type:: v4l2_hevc_pred_weight_table
.. raw:: latex
:stub-columns: 0
:widths: 1 1 2
- * - __u8
- - ``luma_log2_weight_denom``
- -
- * - __s8
- - ``delta_chroma_log2_weight_denom``
- -
* - __s8
- ``delta_luma_weight_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- -
+ - The difference of the weighting factor applied to the luma
+ prediction value for list 0.
* - __s8
- ``luma_offset_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- -
+ - The additive offset applied to the luma prediction value for list 0.
* - __s8
- ``delta_chroma_weight_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2]``
- -
+ - The difference of the weighting factor applied to the chroma
+ prediction value for list 0.
* - __s8
- ``chroma_offset_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2]``
- -
+ - The difference of the additive offset applied to the chroma
+ prediction values for list 0.
* - __s8
- ``delta_luma_weight_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- -
+ - The difference of the weighting factor applied to the luma
+ prediction value for list 1.
* - __s8
- ``luma_offset_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- -
+ - The additive offset applied to the luma prediction value for list 1.
* - __s8
- ``delta_chroma_weight_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2]``
- -
+ - The difference of the weighting factor applied to the chroma
+ prediction value for list 1.
* - __s8
- ``chroma_offset_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX][2]``
- -
+ - The difference of the additive offset applied to the chroma
+ prediction values for list 1.
+ * - __u8
+ - ``luma_log2_weight_denom``
+ - The base 2 logarithm of the denominator for all luma weighting
+ factors.
+ * - __s8
+ - ``delta_chroma_log2_weight_denom``
+ - The difference of the base 2 logarithm of the denominator for
+ all chroma weighting factors.
* - __u8
- ``padding[6]``
- Applications and drivers must set this to zero.
\normalsize
-``V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE (enum)``
+``V4L2_CID_STATELESS_HEVC_DECODE_MODE (enum)``
Specifies the decoding mode to use. Currently exposes slice-based and
frame-based decoding but new modes might be added later on.
This control is used as a modifier for V4L2_PIX_FMT_HEVC_SLICE
This menu control is not yet part of the public kernel API and
it is expected to change.
-.. c:type:: v4l2_mpeg_video_hevc_decode_mode
+.. c:type:: v4l2_stateless_hevc_decode_mode
.. raw:: latex
:stub-columns: 0
:widths: 1 1 2
- * - ``V4L2_MPEG_VIDEO_HEVC_DECODE_MODE_SLICE_BASED``
+ * - ``V4L2_STATELESS_HEVC_DECODE_MODE_SLICE_BASED``
- 0
- Decoding is done at the slice granularity.
The OUTPUT buffer must contain a single slice.
- * - ``V4L2_MPEG_VIDEO_HEVC_DECODE_MODE_FRAME_BASED``
+ * - ``V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED``
- 1
- Decoding is done at the frame granularity.
The OUTPUT buffer must contain all slices needed to decode the
\normalsize
-``V4L2_CID_MPEG_VIDEO_HEVC_START_CODE (enum)``
+``V4L2_CID_STATELESS_HEVC_START_CODE (enum)``
Specifies the HEVC slice start code expected for each slice.
This control is used as a modifier for V4L2_PIX_FMT_HEVC_SLICE
pixel format. Applications that support V4L2_PIX_FMT_HEVC_SLICE
This menu control is not yet part of the public kernel API and
it is expected to change.
-.. c:type:: v4l2_mpeg_video_hevc_start_code
+.. c:type:: v4l2_stateless_hevc_start_code
.. tabularcolumns:: |p{9.2cm}|p{0.6cm}|p{7.5cm}|
:stub-columns: 0
:widths: 1 1 2
- * - ``V4L2_MPEG_VIDEO_HEVC_START_CODE_NONE``
+ * - ``V4L2_STATELESS_HEVC_START_CODE_NONE``
- 0
- Selecting this value specifies that HEVC slices are passed
to the driver without any start code. The bitstream data should be
according to :ref:`hevc` 7.3.1.1 General NAL unit syntax, hence
contains emulation prevention bytes when required.
- * - ``V4L2_MPEG_VIDEO_HEVC_START_CODE_ANNEX_B``
+ * - ``V4L2_STATELESS_HEVC_START_CODE_ANNEX_B``
- 1
- Selecting this value specifies that HEVC slices are expected
to be prefixed by Annex B start codes. According to :ref:`hevc`
This provides a bitmask which consists of bits [0, LTR_COUNT-1].
This is applicable to the H264 and HEVC encoders.
-``V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS (struct)``
+``V4L2_CID_STATELESS_HEVC_DECODE_PARAMS (struct)``
Specifies various decode parameters, especially the references picture order
count (POC) for all the lists (short, long, before, current, after) and the
number of entries for each of them.
- ``pic_order_cnt_val``
- PicOrderCntVal as described in section 8.3.1 "Decoding process
for picture order count" of the specification.
+ * - __u16
+ - ``short_term_ref_pic_set_size``
+ - Specifies the size, in bits, of the short-term reference picture set, of the first slice
+ described as st_ref_pic_set() in the specification, included in the slice header
+ or SPS (section 7.3.6.1).
+ * - __u16
+ - ``long_term_ref_pic_set_size``
+ - Specifies the size, in bits, of the long-term reference picture set, of the first slice
+ included in the slice header or SPS. It is the number of bits in the conditional block
+ if(long_term_ref_pics_present_flag) in section 7.3.6.1 of the specification.
* - __u8
- ``num_active_dpb_entries``
- The number of entries in ``dpb``.
projects / platform / kernel / linux-rpi.git / blobdiff