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Diffstat (limited to 'Documentation/userspace-api/media/v4l')
49 files changed, 2637 insertions, 4376 deletions
diff --git a/Documentation/userspace-api/media/v4l/biblio.rst b/Documentation/userspace-api/media/v4l/biblio.rst index 7869b6f6ff72..64d241daf63c 100644 --- a/Documentation/userspace-api/media/v4l/biblio.rst +++ b/Documentation/userspace-api/media/v4l/biblio.rst @@ -270,7 +270,17 @@ EBU Tech 3213 ============= -:title: E.B.U. Standard for Chromaticity Tolerances for Studio Monitors" +:title: E.B.U. Standard for Chromaticity Tolerances for Studio Monitors + +:author: European Broadcast Union (http://www.ebu.ch) + +.. _tech3321: + +EBU Tech 3321 +============= + + +:title: E.B.U. guidelines for Consumer Flat Panel Displays (FPDs) :author: European Broadcast Union (http://www.ebu.ch) diff --git a/Documentation/userspace-api/media/v4l/buffer.rst b/Documentation/userspace-api/media/v4l/buffer.rst index 7dbdfbb4a0a9..1b0fdc160533 100644 --- a/Documentation/userspace-api/media/v4l/buffer.rst +++ b/Documentation/userspace-api/media/v4l/buffer.rst @@ -604,7 +604,7 @@ Buffer Flags :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl is called. Due to hardware limitations, the last buffer may be empty. In this case the driver will set the ``bytesused`` field to 0, regardless of - the format. Any Any subsequent call to the + the format. Any subsequent call to the :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl will not block anymore, but return an ``EPIPE`` error code. * .. _`V4L2-BUF-FLAG-REQUEST-FD`: diff --git a/Documentation/userspace-api/media/v4l/colorspaces-details.rst b/Documentation/userspace-api/media/v4l/colorspaces-details.rst index 014e7c9fc655..126f66482a0d 100644 --- a/Documentation/userspace-api/media/v4l/colorspaces-details.rst +++ b/Documentation/userspace-api/media/v4l/colorspaces-details.rst @@ -674,8 +674,9 @@ Colorspace EBU Tech. 3213 (V4L2_COLORSPACE_470_SYSTEM_BG) ========================================================= The :ref:`tech3213` standard defines the colorspace used by PAL/SECAM -in 1975. In practice this colorspace is obsolete and SMPTE 170M should -be used instead. The default transfer function is +in 1975. Note that this colorspace is not supported by the HDMI interface. +Instead :ref:`tech3321` recommends that Rec. 709 is used instead for HDMI. +The default transfer function is ``V4L2_XFER_FUNC_709``. The default Y'CbCr encoding is ``V4L2_YCBCR_ENC_601``. The default Y'CbCr quantization is limited range. The chromaticities of the primary colors and the white reference diff --git a/Documentation/userspace-api/media/v4l/common.rst b/Documentation/userspace-api/media/v4l/common.rst index d84aeb703165..8c263c5a85d8 100644 --- a/Documentation/userspace-api/media/v4l/common.rst +++ b/Documentation/userspace-api/media/v4l/common.rst @@ -44,6 +44,7 @@ applicable to all devices. ext-ctrls-image-source ext-ctrls-image-process ext-ctrls-codec + ext-ctrls-codec-stateless ext-ctrls-jpeg ext-ctrls-dv ext-ctrls-rf-tuner diff --git a/Documentation/userspace-api/media/v4l/dev-mem2mem.rst b/Documentation/userspace-api/media/v4l/dev-mem2mem.rst index d8db46886555..7041bb3d5b8d 100644 --- a/Documentation/userspace-api/media/v4l/dev-mem2mem.rst +++ b/Documentation/userspace-api/media/v4l/dev-mem2mem.rst @@ -32,7 +32,7 @@ file handle is visible through another file handle). One of the most common memory-to-memory device is the codec. Codecs are more complicated than most and require additional setup for their codec parameters. This is done through codec controls. -See :ref:`mpeg-controls`. More details on how to use codec memory-to-memory +See :ref:`codec-controls`. More details on how to use codec memory-to-memory devices are given in the following sections. .. toctree:: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst new file mode 100644 index 000000000000..01e3b1a3fb99 --- /dev/null +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec-stateless.rst @@ -0,0 +1,793 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later + +.. _codec-stateless-controls: + +********************************* +Stateless Codec Control Reference +********************************* + +The Stateless Codec control class is intended to support +stateless decoder and encoders (i.e. hardware accelerators). + +These drivers are typically supported by the :ref:`stateless_decoder`, +and deal with parsed pixel formats such as V4L2_PIX_FMT_H264_SLICE. + +Stateless Codec Control ID +========================== + +.. _codec-stateless-control-id: + +``V4L2_CID_CODEC_STATELESS_CLASS (class)`` + The Stateless Codec class descriptor. + +.. _v4l2-codec-stateless-h264: + +``V4L2_CID_STATELESS_H264_SPS (struct)`` + Specifies the sequence parameter set (as extracted from the + bitstream) for the associated H264 slice data. This includes the + necessary parameters for configuring a stateless hardware decoding + pipeline for H264. The bitstream parameters are defined according + to :ref:`h264`, section 7.4.2.1.1 "Sequence Parameter Set Data + Semantics". For further documentation, refer to the above + specification, unless there is an explicit comment stating + otherwise. + +.. c:type:: v4l2_ctrl_h264_sps + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_ctrl_h264_sps + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u8 + - ``profile_idc`` + - + * - __u8 + - ``constraint_set_flags`` + - See :ref:`Sequence Parameter Set Constraints Set Flags <h264_sps_constraints_set_flags>` + * - __u8 + - ``level_idc`` + - + * - __u8 + - ``seq_parameter_set_id`` + - + * - __u8 + - ``chroma_format_idc`` + - + * - __u8 + - ``bit_depth_luma_minus8`` + - + * - __u8 + - ``bit_depth_chroma_minus8`` + - + * - __u8 + - ``log2_max_frame_num_minus4`` + - + * - __u8 + - ``pic_order_cnt_type`` + - + * - __u8 + - ``log2_max_pic_order_cnt_lsb_minus4`` + - + * - __u8 + - ``max_num_ref_frames`` + - + * - __u8 + - ``num_ref_frames_in_pic_order_cnt_cycle`` + - + * - __s32 + - ``offset_for_ref_frame[255]`` + - + * - __s32 + - ``offset_for_non_ref_pic`` + - + * - __s32 + - ``offset_for_top_to_bottom_field`` + - + * - __u16 + - ``pic_width_in_mbs_minus1`` + - + * - __u16 + - ``pic_height_in_map_units_minus1`` + - + * - __u32 + - ``flags`` + - See :ref:`Sequence Parameter Set Flags <h264_sps_flags>` + +.. _h264_sps_constraints_set_flags: + +``Sequence Parameter Set Constraints Set Flags`` + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_H264_SPS_CONSTRAINT_SET0_FLAG`` + - 0x00000001 + - + * - ``V4L2_H264_SPS_CONSTRAINT_SET1_FLAG`` + - 0x00000002 + - + * - ``V4L2_H264_SPS_CONSTRAINT_SET2_FLAG`` + - 0x00000004 + - + * - ``V4L2_H264_SPS_CONSTRAINT_SET3_FLAG`` + - 0x00000008 + - + * - ``V4L2_H264_SPS_CONSTRAINT_SET4_FLAG`` + - 0x00000010 + - + * - ``V4L2_H264_SPS_CONSTRAINT_SET5_FLAG`` + - 0x00000020 + - + +.. _h264_sps_flags: + +``Sequence Parameter Set Flags`` + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE`` + - 0x00000001 + - + * - ``V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS`` + - 0x00000002 + - + * - ``V4L2_H264_SPS_FLAG_DELTA_PIC_ORDER_ALWAYS_ZERO`` + - 0x00000004 + - + * - ``V4L2_H264_SPS_FLAG_GAPS_IN_FRAME_NUM_VALUE_ALLOWED`` + - 0x00000008 + - + * - ``V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY`` + - 0x00000010 + - + * - ``V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD`` + - 0x00000020 + - + * - ``V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE`` + - 0x00000040 + - + +``V4L2_CID_STATELESS_H264_PPS (struct)`` + Specifies the picture parameter set (as extracted from the + bitstream) for the associated H264 slice data. This includes the + necessary parameters for configuring a stateless hardware decoding + pipeline for H264. The bitstream parameters are defined according + to :ref:`h264`, section 7.4.2.2 "Picture Parameter Set RBSP + Semantics". For further documentation, refer to the above + specification, unless there is an explicit comment stating + otherwise. + +.. c:type:: v4l2_ctrl_h264_pps + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_ctrl_h264_pps + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u8 + - ``pic_parameter_set_id`` + - + * - __u8 + - ``seq_parameter_set_id`` + - + * - __u8 + - ``num_slice_groups_minus1`` + - + * - __u8 + - ``num_ref_idx_l0_default_active_minus1`` + - + * - __u8 + - ``num_ref_idx_l1_default_active_minus1`` + - + * - __u8 + - ``weighted_bipred_idc`` + - + * - __s8 + - ``pic_init_qp_minus26`` + - + * - __s8 + - ``pic_init_qs_minus26`` + - + * - __s8 + - ``chroma_qp_index_offset`` + - + * - __s8 + - ``second_chroma_qp_index_offset`` + - + * - __u16 + - ``flags`` + - See :ref:`Picture Parameter Set Flags <h264_pps_flags>` + +.. _h264_pps_flags: + +``Picture Parameter Set Flags`` + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE`` + - 0x00000001 + - + * - ``V4L2_H264_PPS_FLAG_BOTTOM_FIELD_PIC_ORDER_IN_FRAME_PRESENT`` + - 0x00000002 + - + * - ``V4L2_H264_PPS_FLAG_WEIGHTED_PRED`` + - 0x00000004 + - + * - ``V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT`` + - 0x00000008 + - + * - ``V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED`` + - 0x00000010 + - + * - ``V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT`` + - 0x00000020 + - + * - ``V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE`` + - 0x00000040 + - + * - ``V4L2_H264_PPS_FLAG_SCALING_MATRIX_PRESENT`` + - 0x00000080 + - Indicates that ``V4L2_CID_STATELESS_H264_SCALING_MATRIX`` + must be used for this picture. + +``V4L2_CID_STATELESS_H264_SCALING_MATRIX (struct)`` + Specifies the scaling matrix (as extracted from the bitstream) for + the associated H264 slice data. The bitstream parameters are + defined according to :ref:`h264`, section 7.4.2.1.1.1 "Scaling + List Semantics". For further documentation, refer to the above + specification, unless there is an explicit comment stating + otherwise. + +.. c:type:: v4l2_ctrl_h264_scaling_matrix + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_ctrl_h264_scaling_matrix + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u8 + - ``scaling_list_4x4[6][16]`` + - Scaling matrix after applying the inverse scanning process. + Expected list order is Intra Y, Intra Cb, Intra Cr, Inter Y, + Inter Cb, Inter Cr. The values on each scaling list are + expected in raster scan order. + * - __u8 + - ``scaling_list_8x8[6][64]`` + - Scaling matrix after applying the inverse scanning process. + Expected list order is Intra Y, Inter Y, Intra Cb, Inter Cb, + Intra Cr, Inter Cr. The values on each scaling list are + expected in raster scan order. + +``V4L2_CID_STATELESS_H264_SLICE_PARAMS (struct)`` + Specifies the slice parameters (as extracted from the bitstream) + for the associated H264 slice data. This includes the necessary + parameters for configuring a stateless hardware decoding pipeline + for H264. The bitstream parameters are defined according to + :ref:`h264`, section 7.4.3 "Slice Header Semantics". For further + documentation, refer to the above specification, unless there is + an explicit comment stating otherwise. + +.. c:type:: v4l2_ctrl_h264_slice_params + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_ctrl_h264_slice_params + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u32 + - ``header_bit_size`` + - Offset in bits to slice_data() from the beginning of this slice. + * - __u32 + - ``first_mb_in_slice`` + - + * - __u8 + - ``slice_type`` + - + * - __u8 + - ``colour_plane_id`` + - + * - __u8 + - ``redundant_pic_cnt`` + - + * - __u8 + - ``cabac_init_idc`` + - + * - __s8 + - ``slice_qp_delta`` + - + * - __s8 + - ``slice_qs_delta`` + - + * - __u8 + - ``disable_deblocking_filter_idc`` + - + * - __s8 + - ``slice_alpha_c0_offset_div2`` + - + * - __s8 + - ``slice_beta_offset_div2`` + - + * - __u8 + - ``num_ref_idx_l0_active_minus1`` + - If num_ref_idx_active_override_flag is not set, this field must be + set to the value of num_ref_idx_l0_default_active_minus1. + * - __u8 + - ``num_ref_idx_l1_active_minus1`` + - If num_ref_idx_active_override_flag is not set, this field must be + set to the value of num_ref_idx_l1_default_active_minus1. + * - __u8 + - ``reserved`` + - Applications and drivers must set this to zero. + * - struct :c:type:`v4l2_h264_reference` + - ``ref_pic_list0[32]`` + - Reference picture list after applying the per-slice modifications + * - struct :c:type:`v4l2_h264_reference` + - ``ref_pic_list1[32]`` + - Reference picture list after applying the per-slice modifications + * - __u32 + - ``flags`` + - See :ref:`Slice Parameter Flags <h264_slice_flags>` + +.. _h264_slice_flags: + +``Slice Parameter Set Flags`` + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED`` + - 0x00000001 + - + * - ``V4L2_H264_SLICE_FLAG_SP_FOR_SWITCH`` + - 0x00000002 + - + +``V4L2_CID_STATELESS_H264_PRED_WEIGHTS (struct)`` + Prediction weight table defined according to :ref:`h264`, + section 7.4.3.2 "Prediction Weight Table Semantics". + The prediction weight table must be passed by applications + under the conditions explained in section 7.3.3 "Slice header + syntax". + +.. c:type:: v4l2_ctrl_h264_pred_weights + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_ctrl_h264_pred_weights + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u16 + - ``luma_log2_weight_denom`` + - + * - __u16 + - ``chroma_log2_weight_denom`` + - + * - struct :c:type:`v4l2_h264_weight_factors` + - ``weight_factors[2]`` + - The weight factors at index 0 are the weight factors for the reference + list 0, the one at index 1 for the reference list 1. + +.. c:type:: v4l2_h264_weight_factors + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_h264_weight_factors + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __s16 + - ``luma_weight[32]`` + - + * - __s16 + - ``luma_offset[32]`` + - + * - __s16 + - ``chroma_weight[32][2]`` + - + * - __s16 + - ``chroma_offset[32][2]`` + - + +``Picture Reference`` + +.. c:type:: v4l2_h264_reference + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_h264_reference + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u8 + - ``fields`` + - Specifies how the picture is referenced. See :ref:`Reference Fields <h264_ref_fields>` + * - __u8 + - ``index`` + - Index into the :c:type:`v4l2_ctrl_h264_decode_params`.dpb array. + +.. _h264_ref_fields: + +``Reference Fields`` + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_H264_TOP_FIELD_REF`` + - 0x1 + - The top field in field pair is used for short-term reference. + * - ``V4L2_H264_BOTTOM_FIELD_REF`` + - 0x2 + - The bottom field in field pair is used for short-term reference. + * - ``V4L2_H264_FRAME_REF`` + - 0x3 + - The frame (or the top/bottom fields, if it's a field pair) + is used for short-term reference. + +``V4L2_CID_STATELESS_H264_DECODE_PARAMS (struct)`` + Specifies the decode parameters (as extracted from the bitstream) + for the associated H264 slice data. This includes the necessary + parameters for configuring a stateless hardware decoding pipeline + for H264. The bitstream parameters are defined according to + :ref:`h264`. For further documentation, refer to the above + specification, unless there is an explicit comment stating + otherwise. + +.. c:type:: v4l2_ctrl_h264_decode_params + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_ctrl_h264_decode_params + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - struct :c:type:`v4l2_h264_dpb_entry` + - ``dpb[16]`` + - + * - __u16 + - ``nal_ref_idc`` + - NAL reference ID value coming from the NAL Unit header + * - __u16 + - ``frame_num`` + - + * - __s32 + - ``top_field_order_cnt`` + - Picture Order Count for the coded top field + * - __s32 + - ``bottom_field_order_cnt`` + - Picture Order Count for the coded bottom field + * - __u16 + - ``idr_pic_id`` + - + * - __u16 + - ``pic_order_cnt_lsb`` + - + * - __s32 + - ``delta_pic_order_cnt_bottom`` + - + * - __s32 + - ``delta_pic_order_cnt0`` + - + * - __s32 + - ``delta_pic_order_cnt1`` + - + * - __u32 + - ``dec_ref_pic_marking_bit_size`` + - Size in bits of the dec_ref_pic_marking() syntax element. + * - __u32 + - ``pic_order_cnt_bit_size`` + - Combined size in bits of the picture order count related syntax + elements: pic_order_cnt_lsb, delta_pic_order_cnt_bottom, + delta_pic_order_cnt0, and delta_pic_order_cnt1. + * - __u32 + - ``slice_group_change_cycle`` + - + * - __u32 + - ``reserved`` + - Applications and drivers must set this to zero. + * - __u32 + - ``flags`` + - See :ref:`Decode Parameters Flags <h264_decode_params_flags>` + +.. _h264_decode_params_flags: + +``Decode Parameters Flags`` + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC`` + - 0x00000001 + - That picture is an IDR picture + * - ``V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC`` + - 0x00000002 + - + * - ``V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD`` + - 0x00000004 + - + +.. c:type:: v4l2_h264_dpb_entry + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_h264_dpb_entry + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u64 + - ``reference_ts`` + - Timestamp of the V4L2 capture buffer to use as reference, used + with B-coded and P-coded frames. The timestamp refers to the + ``timestamp`` field in struct :c:type:`v4l2_buffer`. Use the + :c:func:`v4l2_timeval_to_ns()` function to convert the struct + :c:type:`timeval` in struct :c:type:`v4l2_buffer` to a __u64. + * - __u32 + - ``pic_num`` + - + * - __u16 + - ``frame_num`` + - + * - __u8 + - ``fields`` + - Specifies how the DPB entry is referenced. See :ref:`Reference Fields <h264_ref_fields>` + * - __u8 + - ``reserved[5]`` + - Applications and drivers must set this to zero. + * - __s32 + - ``top_field_order_cnt`` + - + * - __s32 + - ``bottom_field_order_cnt`` + - + * - __u32 + - ``flags`` + - See :ref:`DPB Entry Flags <h264_dpb_flags>` + +.. _h264_dpb_flags: + +``DPB Entries Flags`` + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_H264_DPB_ENTRY_FLAG_VALID`` + - 0x00000001 + - The DPB entry is valid (non-empty) and should be considered. + * - ``V4L2_H264_DPB_ENTRY_FLAG_ACTIVE`` + - 0x00000002 + - The DPB entry is used for reference. + * - ``V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM`` + - 0x00000004 + - The DPB entry is used for long-term reference. + * - ``V4L2_H264_DPB_ENTRY_FLAG_FIELD`` + - 0x00000008 + - The DPB entry is a single field or a complementary field pair. + +``V4L2_CID_STATELESS_H264_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_H264_SLICE + pixel format. Applications that support V4L2_PIX_FMT_H264_SLICE + are required to set this control in order to specify the decoding mode + that is expected for the buffer. + Drivers may expose a single or multiple decoding modes, depending + on what they can support. + +.. c:type:: v4l2_stateless_h264_decode_mode + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_STATELESS_H264_DECODE_MODE_SLICE_BASED`` + - 0 + - Decoding is done at the slice granularity. + The OUTPUT buffer must contain a single slice. + When this mode is selected, the ``V4L2_CID_STATELESS_H264_SLICE_PARAMS`` + control shall be set. When multiple slices compose a frame, + use of ``V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF`` flag + is required. + * - ``V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED`` + - 1 + - Decoding is done at the frame granularity, + The OUTPUT buffer must contain all slices needed to decode the + frame. The OUTPUT buffer must also contain both fields. + This mode will be supported by devices that + parse the slice(s) header(s) in hardware. When this mode is + selected, the ``V4L2_CID_STATELESS_H264_SLICE_PARAMS`` + control shall not be set. + +``V4L2_CID_STATELESS_H264_START_CODE (enum)`` + Specifies the H264 slice start code expected for each slice. + This control is used as a modifier for V4L2_PIX_FMT_H264_SLICE + pixel format. Applications that support V4L2_PIX_FMT_H264_SLICE + are required to set this control in order to specify the start code + that is expected for the buffer. + Drivers may expose a single or multiple start codes, depending + on what they can support. + +.. c:type:: v4l2_stateless_h264_start_code + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_STATELESS_H264_START_CODE_NONE`` + - 0 + - Selecting this value specifies that H264 slices are passed + to the driver without any start code. + * - ``V4L2_STATELESS_H264_START_CODE_ANNEX_B`` + - 1 + - Selecting this value specifies that H264 slices are expected + to be prefixed by Annex B start codes. According to :ref:`h264` + valid start codes can be 3-bytes 0x000001 or 4-bytes 0x00000001. + + +.. _codec-stateless-fwht: + +``V4L2_CID_STATELESS_FWHT_PARAMS (struct)`` + Specifies the FWHT (Fast Walsh Hadamard Transform) parameters (as extracted + from the bitstream) for the associated FWHT data. This includes the necessary + parameters for configuring a stateless hardware decoding pipeline for FWHT. + This codec is specific to the vicodec test driver. + +.. c:type:: v4l2_ctrl_fwht_params + +.. cssclass:: longtable + +.. tabularcolumns:: |p{1.4cm}|p{4.3cm}|p{11.8cm}| + +.. flat-table:: struct v4l2_ctrl_fwht_params + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u64 + - ``backward_ref_ts`` + - Timestamp of the V4L2 capture buffer to use as backward reference, used + with P-coded frames. The timestamp refers to the + ``timestamp`` field in struct :c:type:`v4l2_buffer`. Use the + :c:func:`v4l2_timeval_to_ns()` function to convert the struct + :c:type:`timeval` in struct :c:type:`v4l2_buffer` to a __u64. + * - __u32 + - ``version`` + - The version of the codec. Set to ``V4L2_FWHT_VERSION``. + * - __u32 + - ``width`` + - The width of the frame. + * - __u32 + - ``height`` + - The height of the frame. + * - __u32 + - ``flags`` + - The flags of the frame, see :ref:`fwht-flags`. + * - __u32 + - ``colorspace`` + - The colorspace of the frame, from enum :c:type:`v4l2_colorspace`. + * - __u32 + - ``xfer_func`` + - The transfer function, from enum :c:type:`v4l2_xfer_func`. + * - __u32 + - ``ycbcr_enc`` + - The Y'CbCr encoding, from enum :c:type:`v4l2_ycbcr_encoding`. + * - __u32 + - ``quantization`` + - The quantization range, from enum :c:type:`v4l2_quantization`. + + + +.. _fwht-flags: + +FWHT Flags +========== + +.. cssclass:: longtable + +.. tabularcolumns:: |p{6.8cm}|p{2.4cm}|p{8.3cm}| + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 3 1 4 + + * - ``V4L2_FWHT_FL_IS_INTERLACED`` + - 0x00000001 + - Set if this is an interlaced format. + * - ``V4L2_FWHT_FL_IS_BOTTOM_FIRST`` + - 0x00000002 + - Set if this is a bottom-first (NTSC) interlaced format. + * - ``V4L2_FWHT_FL_IS_ALTERNATE`` + - 0x00000004 + - Set if each 'frame' contains just one field. + * - ``V4L2_FWHT_FL_IS_BOTTOM_FIELD`` + - 0x00000008 + - If V4L2_FWHT_FL_IS_ALTERNATE was set, then this is set if this 'frame' is the + bottom field, else it is the top field. + * - ``V4L2_FWHT_FL_LUMA_IS_UNCOMPRESSED`` + - 0x00000010 + - Set if the Y' (luma) plane is uncompressed. + * - ``V4L2_FWHT_FL_CB_IS_UNCOMPRESSED`` + - 0x00000020 + - Set if the Cb plane is uncompressed. + * - ``V4L2_FWHT_FL_CR_IS_UNCOMPRESSED`` + - 0x00000040 + - Set if the Cr plane is uncompressed. + * - ``V4L2_FWHT_FL_CHROMA_FULL_HEIGHT`` + - 0x00000080 + - Set if the chroma plane has the same height as the luma plane, + else the chroma plane is half the height of the luma plane. + * - ``V4L2_FWHT_FL_CHROMA_FULL_WIDTH`` + - 0x00000100 + - Set if the chroma plane has the same width as the luma plane, + else the chroma plane is half the width of the luma plane. + * - ``V4L2_FWHT_FL_ALPHA_IS_UNCOMPRESSED`` + - 0x00000200 + - Set if the alpha plane is uncompressed. + * - ``V4L2_FWHT_FL_I_FRAME`` + - 0x00000400 + - Set if this is an I-frame. + * - ``V4L2_FWHT_FL_COMPONENTS_NUM_MSK`` + - 0x00070000 + - The number of color components - 1. + * - ``V4L2_FWHT_FL_PIXENC_MSK`` + - 0x00180000 + - The mask for the pixel encoding. + * - ``V4L2_FWHT_FL_PIXENC_YUV`` + - 0x00080000 + - Set if the pixel encoding is YUV. + * - ``V4L2_FWHT_FL_PIXENC_RGB`` + - 0x00100000 + - Set if the pixel encoding is RGB. + * - ``V4L2_FWHT_FL_PIXENC_HSV`` + - 0x00180000 + - Set if the pixel encoding is HSV. diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index ce728c757eaf..454ecd9a0f83 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -1,6 +1,6 @@ .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later -.. _mpeg-controls: +.. _codec-controls: *********************** Codec Control Reference @@ -26,7 +26,7 @@ Generic Codec Controls Codec Control IDs ----------------- -``V4L2_CID_MPEG_CLASS (class)`` +``V4L2_CID_CODEC_CLASS (class)`` The Codec class descriptor. Calling :ref:`VIDIOC_QUERYCTRL` for this control will return a description of this control class. This description can be @@ -1502,698 +1502,6 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - - Layer number -.. _v4l2-mpeg-h264: - -``V4L2_CID_MPEG_VIDEO_H264_SPS (struct)`` - Specifies the sequence parameter set (as extracted from the - bitstream) for the associated H264 slice data. This includes the - necessary parameters for configuring a stateless hardware decoding - pipeline for H264. The bitstream parameters are defined according - to :ref:`h264`, section 7.4.2.1.1 "Sequence Parameter Set Data - Semantics". For further documentation, refer to the above - specification, unless there is an explicit comment stating - otherwise. - - .. note:: - - This compound control is not yet part of the public kernel API and - it is expected to change. - -.. c:type:: v4l2_ctrl_h264_sps - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_ctrl_h264_sps - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u8 - - ``profile_idc`` - - - * - __u8 - - ``constraint_set_flags`` - - See :ref:`Sequence Parameter Set Constraints Set Flags <h264_sps_constraints_set_flags>` - * - __u8 - - ``level_idc`` - - - * - __u8 - - ``seq_parameter_set_id`` - - - * - __u8 - - ``chroma_format_idc`` - - - * - __u8 - - ``bit_depth_luma_minus8`` - - - * - __u8 - - ``bit_depth_chroma_minus8`` - - - * - __u8 - - ``log2_max_frame_num_minus4`` - - - * - __u8 - - ``pic_order_cnt_type`` - - - * - __u8 - - ``log2_max_pic_order_cnt_lsb_minus4`` - - - * - __u8 - - ``max_num_ref_frames`` - - - * - __u8 - - ``num_ref_frames_in_pic_order_cnt_cycle`` - - - * - __s32 - - ``offset_for_ref_frame[255]`` - - - * - __s32 - - ``offset_for_non_ref_pic`` - - - * - __s32 - - ``offset_for_top_to_bottom_field`` - - - * - __u16 - - ``pic_width_in_mbs_minus1`` - - - * - __u16 - - ``pic_height_in_map_units_minus1`` - - - * - __u32 - - ``flags`` - - See :ref:`Sequence Parameter Set Flags <h264_sps_flags>` - -.. _h264_sps_constraints_set_flags: - -``Sequence Parameter Set Constraints Set Flags`` - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_H264_SPS_CONSTRAINT_SET0_FLAG`` - - 0x00000001 - - - * - ``V4L2_H264_SPS_CONSTRAINT_SET1_FLAG`` - - 0x00000002 - - - * - ``V4L2_H264_SPS_CONSTRAINT_SET2_FLAG`` - - 0x00000004 - - - * - ``V4L2_H264_SPS_CONSTRAINT_SET3_FLAG`` - - 0x00000008 - - - * - ``V4L2_H264_SPS_CONSTRAINT_SET4_FLAG`` - - 0x00000010 - - - * - ``V4L2_H264_SPS_CONSTRAINT_SET5_FLAG`` - - 0x00000020 - - - -.. _h264_sps_flags: - -``Sequence Parameter Set Flags`` - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE`` - - 0x00000001 - - - * - ``V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS`` - - 0x00000002 - - - * - ``V4L2_H264_SPS_FLAG_DELTA_PIC_ORDER_ALWAYS_ZERO`` - - 0x00000004 - - - * - ``V4L2_H264_SPS_FLAG_GAPS_IN_FRAME_NUM_VALUE_ALLOWED`` - - 0x00000008 - - - * - ``V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY`` - - 0x00000010 - - - * - ``V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD`` - - 0x00000020 - - - * - ``V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE`` - - 0x00000040 - - - -``V4L2_CID_MPEG_VIDEO_H264_PPS (struct)`` - Specifies the picture parameter set (as extracted from the - bitstream) for the associated H264 slice data. This includes the - necessary parameters for configuring a stateless hardware decoding - pipeline for H264. The bitstream parameters are defined according - to :ref:`h264`, section 7.4.2.2 "Picture Parameter Set RBSP - Semantics". For further documentation, refer to the above - specification, unless there is an explicit comment stating - otherwise. - - .. note:: - - This compound control is not yet part of the public kernel API and - it is expected to change. - -.. c:type:: v4l2_ctrl_h264_pps - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_ctrl_h264_pps - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u8 - - ``pic_parameter_set_id`` - - - * - __u8 - - ``seq_parameter_set_id`` - - - * - __u8 - - ``num_slice_groups_minus1`` - - - * - __u8 - - ``num_ref_idx_l0_default_active_minus1`` - - - * - __u8 - - ``num_ref_idx_l1_default_active_minus1`` - - - * - __u8 - - ``weighted_bipred_idc`` - - - * - __s8 - - ``pic_init_qp_minus26`` - - - * - __s8 - - ``pic_init_qs_minus26`` - - - * - __s8 - - ``chroma_qp_index_offset`` - - - * - __s8 - - ``second_chroma_qp_index_offset`` - - - * - __u16 - - ``flags`` - - See :ref:`Picture Parameter Set Flags <h264_pps_flags>` - -.. _h264_pps_flags: - -``Picture Parameter Set Flags`` - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE`` - - 0x00000001 - - - * - ``V4L2_H264_PPS_FLAG_BOTTOM_FIELD_PIC_ORDER_IN_FRAME_PRESENT`` - - 0x00000002 - - - * - ``V4L2_H264_PPS_FLAG_WEIGHTED_PRED`` - - 0x00000004 - - - * - ``V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT`` - - 0x00000008 - - - * - ``V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED`` - - 0x00000010 - - - * - ``V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT`` - - 0x00000020 - - - * - ``V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE`` - - 0x00000040 - - - * - ``V4L2_H264_PPS_FLAG_SCALING_MATRIX_PRESENT`` - - 0x00000080 - - Indicates that ``V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX`` - must be used for this picture. - -``V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX (struct)`` - Specifies the scaling matrix (as extracted from the bitstream) for - the associated H264 slice data. The bitstream parameters are - defined according to :ref:`h264`, section 7.4.2.1.1.1 "Scaling - List Semantics". For further documentation, refer to the above - specification, unless there is an explicit comment stating - otherwise. - - .. note:: - - This compound control is not yet part of the public kernel API and - it is expected to change. - -.. c:type:: v4l2_ctrl_h264_scaling_matrix - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_ctrl_h264_scaling_matrix - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u8 - - ``scaling_list_4x4[6][16]`` - - Scaling matrix after applying the inverse scanning process. - Expected list order is Intra Y, Intra Cb, Intra Cr, Inter Y, - Inter Cb, Inter Cr. The values on each scaling list are - expected in raster scan order. - * - __u8 - - ``scaling_list_8x8[6][64]`` - - Scaling matrix after applying the inverse scanning process. - Expected list order is Intra Y, Inter Y, Intra Cb, Inter Cb, - Intra Cr, Inter Cr. The values on each scaling list are - expected in raster scan order. - -``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS (struct)`` - Specifies the slice parameters (as extracted from the bitstream) - for the associated H264 slice data. This includes the necessary - parameters for configuring a stateless hardware decoding pipeline - for H264. The bitstream parameters are defined according to - :ref:`h264`, section 7.4.3 "Slice Header Semantics". For further - documentation, refer to the above specification, unless there is - an explicit comment stating otherwise. - - .. note:: - - This compound control is not yet part of the public kernel API - and it is expected to change. - -.. c:type:: v4l2_ctrl_h264_slice_params - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_ctrl_h264_slice_params - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u32 - - ``header_bit_size`` - - Offset in bits to slice_data() from the beginning of this slice. - * - __u32 - - ``first_mb_in_slice`` - - - * - __u8 - - ``slice_type`` - - - * - __u8 - - ``colour_plane_id`` - - - * - __u8 - - ``redundant_pic_cnt`` - - - * - __u8 - - ``cabac_init_idc`` - - - * - __s8 - - ``slice_qp_delta`` - - - * - __s8 - - ``slice_qs_delta`` - - - * - __u8 - - ``disable_deblocking_filter_idc`` - - - * - __s8 - - ``slice_alpha_c0_offset_div2`` - - - * - __s8 - - ``slice_beta_offset_div2`` - - - * - __u8 - - ``num_ref_idx_l0_active_minus1`` - - If num_ref_idx_active_override_flag is not set, this field must be - set to the value of num_ref_idx_l0_default_active_minus1. - * - __u8 - - ``num_ref_idx_l1_active_minus1`` - - If num_ref_idx_active_override_flag is not set, this field must be - set to the value of num_ref_idx_l1_default_active_minus1. - * - __u8 - - ``reserved`` - - Applications and drivers must set this to zero. - * - struct :c:type:`v4l2_h264_reference` - - ``ref_pic_list0[32]`` - - Reference picture list after applying the per-slice modifications - * - struct :c:type:`v4l2_h264_reference` - - ``ref_pic_list1[32]`` - - Reference picture list after applying the per-slice modifications - * - __u32 - - ``flags`` - - See :ref:`Slice Parameter Flags <h264_slice_flags>` - -.. _h264_slice_flags: - -``Slice Parameter Set Flags`` - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED`` - - 0x00000001 - - - * - ``V4L2_H264_SLICE_FLAG_SP_FOR_SWITCH`` - - 0x00000002 - - - -``V4L2_CID_MPEG_VIDEO_H264_PRED_WEIGHTS (struct)`` - Prediction weight table defined according to :ref:`h264`, - section 7.4.3.2 "Prediction Weight Table Semantics". - The prediction weight table must be passed by applications - under the conditions explained in section 7.3.3 "Slice header - syntax". - - .. note:: - - This compound control is not yet part of the public kernel API and - it is expected to change. - -.. c:type:: v4l2_ctrl_h264_pred_weights - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_ctrl_h264_pred_weights - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u16 - - ``luma_log2_weight_denom`` - - - * - __u16 - - ``chroma_log2_weight_denom`` - - - * - struct :c:type:`v4l2_h264_weight_factors` - - ``weight_factors[2]`` - - The weight factors at index 0 are the weight factors for the reference - list 0, the one at index 1 for the reference list 1. - -.. c:type:: v4l2_h264_weight_factors - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_h264_weight_factors - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __s16 - - ``luma_weight[32]`` - - - * - __s16 - - ``luma_offset[32]`` - - - * - __s16 - - ``chroma_weight[32][2]`` - - - * - __s16 - - ``chroma_offset[32][2]`` - - - -``Picture Reference`` - -.. c:type:: v4l2_h264_reference - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_h264_reference - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u8 - - ``fields`` - - Specifies how the picture is referenced. See :ref:`Reference Fields <h264_ref_fields>` - * - __u8 - - ``index`` - - Index into the :c:type:`v4l2_ctrl_h264_decode_params`.dpb array. - -.. _h264_ref_fields: - -``Reference Fields`` - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_H264_TOP_FIELD_REF`` - - 0x1 - - The top field in field pair is used for short-term reference. - * - ``V4L2_H264_BOTTOM_FIELD_REF`` - - 0x2 - - The bottom field in field pair is used for short-term reference. - * - ``V4L2_H264_FRAME_REF`` - - 0x3 - - The frame (or the top/bottom fields, if it's a field pair) - is used for short-term reference. - -``V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS (struct)`` - Specifies the decode parameters (as extracted from the bitstream) - for the associated H264 slice data. This includes the necessary - parameters for configuring a stateless hardware decoding pipeline - for H264. The bitstream parameters are defined according to - :ref:`h264`. For further documentation, refer to the above - specification, unless there is an explicit comment stating - otherwise. - - .. note:: - - This compound control is not yet part of the public kernel API and - it is expected to change. - -.. c:type:: v4l2_ctrl_h264_decode_params - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_ctrl_h264_decode_params - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - struct :c:type:`v4l2_h264_dpb_entry` - - ``dpb[16]`` - - - * - __u16 - - ``nal_ref_idc`` - - NAL reference ID value coming from the NAL Unit header - * - __u16 - - ``frame_num`` - - - * - __s32 - - ``top_field_order_cnt`` - - Picture Order Count for the coded top field - * - __s32 - - ``bottom_field_order_cnt`` - - Picture Order Count for the coded bottom field - * - __u16 - - ``idr_pic_id`` - - - * - __u16 - - ``pic_order_cnt_lsb`` - - - * - __s32 - - ``delta_pic_order_cnt_bottom`` - - - * - __s32 - - ``delta_pic_order_cnt0`` - - - * - __s32 - - ``delta_pic_order_cnt1`` - - - * - __u32 - - ``dec_ref_pic_marking_bit_size`` - - Size in bits of the dec_ref_pic_marking() syntax element. - * - __u32 - - ``pic_order_cnt_bit_size`` - - Combined size in bits of the picture order count related syntax - elements: pic_order_cnt_lsb, delta_pic_order_cnt_bottom, - delta_pic_order_cnt0, and delta_pic_order_cnt1. - * - __u32 - - ``slice_group_change_cycle`` - - - * - __u32 - - ``reserved`` - - Applications and drivers must set this to zero. - * - __u32 - - ``flags`` - - See :ref:`Decode Parameters Flags <h264_decode_params_flags>` - -.. _h264_decode_params_flags: - -``Decode Parameters Flags`` - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC`` - - 0x00000001 - - That picture is an IDR picture - * - ``V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC`` - - 0x00000002 - - - * - ``V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD`` - - 0x00000004 - - - -.. c:type:: v4l2_h264_dpb_entry - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_h264_dpb_entry - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u64 - - ``reference_ts`` - - Timestamp of the V4L2 capture buffer to use as reference, used - with B-coded and P-coded frames. The timestamp refers to the - ``timestamp`` field in struct :c:type:`v4l2_buffer`. Use the - :c:func:`v4l2_timeval_to_ns()` function to convert the struct - :c:type:`timeval` in struct :c:type:`v4l2_buffer` to a __u64. - * - __u32 - - ``pic_num`` - - - * - __u16 - - ``frame_num`` - - - * - __u8 - - ``fields`` - - Specifies how the DPB entry is referenced. See :ref:`Reference Fields <h264_ref_fields>` - * - __u8 - - ``reserved[5]`` - - Applications and drivers must set this to zero. - * - __s32 - - ``top_field_order_cnt`` - - - * - __s32 - - ``bottom_field_order_cnt`` - - - * - __u32 - - ``flags`` - - See :ref:`DPB Entry Flags <h264_dpb_flags>` - -.. _h264_dpb_flags: - -``DPB Entries Flags`` - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_H264_DPB_ENTRY_FLAG_VALID`` - - 0x00000001 - - The DPB entry is valid (non-empty) and should be considered. - * - ``V4L2_H264_DPB_ENTRY_FLAG_ACTIVE`` - - 0x00000002 - - The DPB entry is used for reference. - * - ``V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM`` - - 0x00000004 - - The DPB entry is used for long-term reference. - * - ``V4L2_H264_DPB_ENTRY_FLAG_FIELD`` - - 0x00000008 - - The DPB entry is a single field or a complementary field pair. - -``V4L2_CID_MPEG_VIDEO_H264_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_H264_SLICE - pixel format. Applications that support V4L2_PIX_FMT_H264_SLICE - are required to set this control in order to specify the decoding mode - that is expected for the buffer. - Drivers may expose a single or multiple decoding modes, depending - on what they can support. - - .. note:: - - This menu control is not yet part of the public kernel API and - it is expected to change. - -.. c:type:: v4l2_mpeg_video_h264_decode_mode - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_MPEG_VIDEO_H264_DECODE_MODE_SLICE_BASED`` - - 0 - - Decoding is done at the slice granularity. - The OUTPUT buffer must contain a single slice. - When this mode is selected, the ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS`` - control shall be set. When multiple slices compose a frame, - use of ``V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF`` flag - is required. - * - ``V4L2_MPEG_VIDEO_H264_DECODE_MODE_FRAME_BASED`` - - 1 - - Decoding is done at the frame granularity, - The OUTPUT buffer must contain all slices needed to decode the - frame. The OUTPUT buffer must also contain both fields. - This mode will be supported by devices that - parse the slice(s) header(s) in hardware. When this mode is - selected, the ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS`` - control shall not be set. - -``V4L2_CID_MPEG_VIDEO_H264_START_CODE (enum)`` - Specifies the H264 slice start code expected for each slice. - This control is used as a modifier for V4L2_PIX_FMT_H264_SLICE - pixel format. Applications that support V4L2_PIX_FMT_H264_SLICE - are required to set this control in order to specify the start code - that is expected for the buffer. - Drivers may expose a single or multiple start codes, depending - on what they can support. - - .. note:: - - This menu control is not yet part of the public kernel API and - it is expected to change. - -.. c:type:: v4l2_mpeg_video_h264_start_code - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_MPEG_VIDEO_H264_START_CODE_NONE`` - - 0 - - Selecting this value specifies that H264 slices are passed - to the driver without any start code. - * - ``V4L2_MPEG_VIDEO_H264_START_CODE_ANNEX_B`` - - 1 - - Selecting this value specifies that H264 slices are expected - to be prefixed by Annex B start codes. According to :ref:`h264` - valid start codes can be 3-bytes 0x000001 or 4-bytes 0x00000001. - .. _v4l2-mpeg-mpeg2: ``V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS (struct)`` @@ -2905,127 +2213,6 @@ enum v4l2_mpeg_mfc51_video_force_frame_type - - Force a non-coded frame. -.. _v4l2-mpeg-fwht: - -``V4L2_CID_MPEG_VIDEO_FWHT_PARAMS (struct)`` - Specifies the fwht parameters (as extracted from the bitstream) for the - associated FWHT data. This includes the necessary parameters for - configuring a stateless hardware decoding pipeline for FWHT. - - .. note:: - - This compound control is not yet part of the public kernel API and - it is expected to change. - -.. c:type:: v4l2_ctrl_fwht_params - -.. cssclass:: longtable - -.. tabularcolumns:: |p{1.4cm}|p{4.3cm}|p{11.8cm}| - -.. flat-table:: struct v4l2_ctrl_fwht_params - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u64 - - ``backward_ref_ts`` - - Timestamp of the V4L2 capture buffer to use as backward reference, used - with P-coded frames. The timestamp refers to the - ``timestamp`` field in struct :c:type:`v4l2_buffer`. Use the - :c:func:`v4l2_timeval_to_ns()` function to convert the struct - :c:type:`timeval` in struct :c:type:`v4l2_buffer` to a __u64. - * - __u32 - - ``version`` - - The version of the codec - * - __u32 - - ``width`` - - The width of the frame - * - __u32 - - ``height`` - - The height of the frame - * - __u32 - - ``flags`` - - The flags of the frame, see :ref:`fwht-flags`. - * - __u32 - - ``colorspace`` - - The colorspace of the frame, from enum :c:type:`v4l2_colorspace`. - * - __u32 - - ``xfer_func`` - - The transfer function, from enum :c:type:`v4l2_xfer_func`. - * - __u32 - - ``ycbcr_enc`` - - The Y'CbCr encoding, from enum :c:type:`v4l2_ycbcr_encoding`. - * - __u32 - - ``quantization`` - - The quantization range, from enum :c:type:`v4l2_quantization`. - - - -.. _fwht-flags: - -FWHT Flags -============ - -.. cssclass:: longtable - -.. tabularcolumns:: |p{6.8cm}|p{2.4cm}|p{8.3cm}| - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 3 1 4 - - * - ``FWHT_FL_IS_INTERLACED`` - - 0x00000001 - - Set if this is an interlaced format - * - ``FWHT_FL_IS_BOTTOM_FIRST`` - - 0x00000002 - - Set if this is a bottom-first (NTSC) interlaced format - * - ``FWHT_FL_IS_ALTERNATE`` - - 0x00000004 - - Set if each 'frame' contains just one field - * - ``FWHT_FL_IS_BOTTOM_FIELD`` - - 0x00000008 - - If FWHT_FL_IS_ALTERNATE was set, then this is set if this 'frame' is the - bottom field, else it is the top field. - * - ``FWHT_FL_LUMA_IS_UNCOMPRESSED`` - - 0x00000010 - - Set if the luma plane is uncompressed - * - ``FWHT_FL_CB_IS_UNCOMPRESSED`` - - 0x00000020 - - Set if the cb plane is uncompressed - * - ``FWHT_FL_CR_IS_UNCOMPRESSED`` - - 0x00000040 - - Set if the cr plane is uncompressed - * - ``FWHT_FL_CHROMA_FULL_HEIGHT`` - - 0x00000080 - - Set if the chroma plane has the same height as the luma plane, - else the chroma plane is half the height of the luma plane - * - ``FWHT_FL_CHROMA_FULL_WIDTH`` - - 0x00000100 - - Set if the chroma plane has the same width as the luma plane, - else the chroma plane is half the width of the luma plane - * - ``FWHT_FL_ALPHA_IS_UNCOMPRESSED`` - - 0x00000200 - - Set if the alpha plane is uncompressed - * - ``FWHT_FL_I_FRAME`` - - 0x00000400 - - Set if this is an I-frame - * - ``FWHT_FL_COMPONENTS_NUM_MSK`` - - 0x00070000 - - A 4-values flag - the number of components - 1 - * - ``FWHT_FL_PIXENC_YUV`` - - 0x00080000 - - Set if the pixel encoding is YUV - * - ``FWHT_FL_PIXENC_RGB`` - - 0x00100000 - - Set if the pixel encoding is RGB - * - ``FWHT_FL_PIXENC_HSV`` - - 0x00180000 - - Set if the pixel encoding is HSV - - CX2341x MPEG Controls ===================== diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst index 9457dc340c31..de43f5c8486d 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst @@ -58,3 +58,17 @@ Image Source Control IDs The unit cell consists of the whole area of the pixel, sensitive and non-sensitive. This control is required for automatic calibration of sensors/cameras. + +.. c:type:: v4l2_area + +.. flat-table:: struct v4l2_area + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u32 + - ``width`` + - Width of the area. + * - __u32 + - ``height`` + - Height of the area. diff --git a/Documentation/userspace-api/media/v4l/extended-controls.rst b/Documentation/userspace-api/media/v4l/extended-controls.rst index 70301538d222..44fcd67f20bf 100644 --- a/Documentation/userspace-api/media/v4l/extended-controls.rst +++ b/Documentation/userspace-api/media/v4l/extended-controls.rst @@ -55,8 +55,8 @@ controls in that array and a control class. Control classes are used to group similar controls into a single class. For example, control class ``V4L2_CTRL_CLASS_USER`` contains all user controls (i. e. all controls that can also be set using the old :ref:`VIDIOC_S_CTRL <VIDIOC_G_CTRL>` -ioctl). Control class ``V4L2_CTRL_CLASS_MPEG`` contains all controls -relating to MPEG encoding, etc. +ioctl). Control class ``V4L2_CTRL_CLASS_CODEC`` contains controls +relating to codecs. All controls in the control array must belong to the specified control class. An error is returned if this is not the case. @@ -130,9 +130,9 @@ control class is found: .. code-block:: c - qctrl.id = V4L2_CTRL_CLASS_MPEG | V4L2_CTRL_FLAG_NEXT_CTRL; + qctrl.id = V4L2_CTRL_CLASS_CODEC | V4L2_CTRL_FLAG_NEXT_CTRL; while (0 == ioctl(fd, VIDIOC_QUERYCTRL, &qctrl)) { - if (V4L2_CTRL_ID2CLASS(qctrl.id) != V4L2_CTRL_CLASS_MPEG) + if (V4L2_CTRL_ID2CLASS(qctrl.id) != V4L2_CTRL_CLASS_CODEC) break; /* ... */ qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL; diff --git a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst index d585909bc4e2..acad5f3ca0c1 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst @@ -57,18 +57,18 @@ Compressed Formats - H264 parsed slice data, including slice headers, either with or without the start code, as extracted from the H264 bitstream. This format is adapted for stateless video decoders that implement an - H264 pipeline (using the :ref:`mem2mem` and :ref:`media-request-api`). + H264 pipeline with the :ref:`stateless_decoder`. This pixelformat has two modifiers that must be set at least once - through the ``V4L2_CID_MPEG_VIDEO_H264_DECODE_MODE`` - and ``V4L2_CID_MPEG_VIDEO_H264_START_CODE`` controls. + through the ``V4L2_CID_STATELESS_H264_DECODE_MODE`` + and ``V4L2_CID_STATELESS_H264_START_CODE`` controls. In addition, metadata associated with the frame to decode are - required to be passed through the ``V4L2_CID_MPEG_VIDEO_H264_SPS``, - ``V4L2_CID_MPEG_VIDEO_H264_PPS``, - ``V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX``, - ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS`` and - ``V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS`` controls. See the - :ref:`associated Codec Control IDs <v4l2-mpeg-h264>`. Exactly - one output and one capture buffer must be provided for use + required to be passed through the ``V4L2_CID_STATELESS_H264_SPS``, + ``V4L2_CID_STATELESS_H264_PPS``, + ``V4L2_CID_STATELESS_H264_SCALING_MATRIX``, + ``V4L2_CID_STATELESS_H264_SLICE_PARAMS`` and + ``V4L2_CID_STATELESS_H264_DECODE_PARAMS`` controls. See the + :ref:`associated Codec Control IDs <v4l2-codec-stateless-h264>`. + Exactly one output and one capture buffer must be provided for use with this pixel format. The output buffer must contain the appropriate number of macroblocks to decode a full corresponding frame to the matching capture buffer. @@ -77,11 +77,6 @@ Compressed Formats 7.3.2.8 "Slice layer without partitioning RBSP syntax" and the following sections. - .. note:: - - This format is not yet part of the public kernel API and it - is expected to change. - * .. _V4L2-PIX-FMT-H263: - ``V4L2_PIX_FMT_H263`` @@ -196,10 +191,10 @@ Compressed Formats through the ``V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE`` and ``V4L2_CID_MPEG_VIDEO_HEVC_START_CODE`` controls. 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`` + through the following controls: + ``V4L2_CID_MPEG_VIDEO_HEVC_SPS``, + ``V4L2_CID_MPEG_VIDEO_HEVC_PPS``, and + ``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. @@ -222,4 +217,6 @@ Compressed Formats - ``V4L2_PIX_FMT_FWHT_STATELESS`` - 'SFWH' - Same format as V4L2_PIX_FMT_FWHT but requires stateless codec implementation. - See the :ref:`associated Codec Control IDs <v4l2-mpeg-fwht>`. + Metadata associated with the frame to decode is required to be passed + through the ``V4L2_CID_STATELESS_FWHT_PARAMS`` control. + See the :ref:`associated Codec Control ID <codec-stateless-fwht>`. diff --git a/Documentation/userspace-api/media/v4l/pixfmt-grey.rst b/Documentation/userspace-api/media/v4l/pixfmt-grey.rst deleted file mode 100644 index 121365b03c57..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-grey.rst +++ /dev/null @@ -1,44 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-GREY: - -************************** -V4L2_PIX_FMT_GREY ('GREY') -************************** - -Grey-scale image - - -Description -=========== - -This is a grey-scale image. It is really a degenerate Y'CbCr format -which simply contains no Cb or Cr data. - -**Byte Order.** -Each cell is one byte. - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` diff --git a/Documentation/userspace-api/media/v4l/pixfmt-m420.rst b/Documentation/userspace-api/media/v4l/pixfmt-m420.rst index 13cf36a8cd5c..c01a949e7c11 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-m420.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-m420.rst @@ -67,60 +67,5 @@ Each cell is one byte. **Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - 2 - - - - 3 - * - 0 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - 1 - - Y - - - - Y - - Y - - - - Y - * - - * - 2 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - 3 - - Y - - - - Y - - Y - - - - Y +Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>` +horizontally and vertically. diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst index 7e43837ed260..fa04f00bcd2e 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst @@ -1,7 +1,8 @@ .. SPDX-License-Identifier: GPL-2.0 -.. _v4l2-meta-fmt-params-rkisp1: -.. _v4l2-meta-fmt-stat-rkisp1: +.. _v4l2-meta-fmt-rk-isp1-params: + +.. _v4l2-meta-fmt-rk-isp1-stat-3a: ***************************************************************************** V4L2_META_FMT_RK_ISP1_PARAMS ('rk1p'), V4L2_META_FMT_RK_ISP1_STAT_3A ('rk1s') @@ -46,4 +47,4 @@ important tuning tools using software control loop. rkisp1 uAPI data types ====================== -.. kernel-doc:: drivers/staging/media/rkisp1/uapi/rkisp1-config.h +.. kernel-doc:: include/uapi/linux/rkisp1-config.h diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv12.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv12.rst deleted file mode 100644 index dd2f38129fe6..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv12.rst +++ /dev/null @@ -1,129 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-NV12: -.. _V4L2-PIX-FMT-NV21: - -****************************************************** -V4L2_PIX_FMT_NV12 ('NV12'), V4L2_PIX_FMT_NV21 ('NV21') -****************************************************** - - -V4L2_PIX_FMT_NV21 -Formats with ½ horizontal and vertical chroma resolution, also known as -YUV 4:2:0. One luminance and one chrominance plane with alternating -chroma samples as opposed to ``V4L2_PIX_FMT_YVU420`` - - -Description -=========== - -These are two-plane versions of the YUV 4:2:0 format. The three -components are separated into two sub-images or planes. The Y plane is -first. The Y plane has one byte per pixel. For ``V4L2_PIX_FMT_NV12``, a -combined CbCr plane immediately follows the Y plane in memory. The CbCr -plane is the same width, in bytes, as the Y plane (and of the image), -but is half as tall in pixels. Each CbCr pair belongs to four pixels. -For example, Cb\ :sub:`0`/Cr\ :sub:`0` belongs to Y'\ :sub:`00`, -Y'\ :sub:`01`, Y'\ :sub:`10`, Y'\ :sub:`11`. ``V4L2_PIX_FMT_NV21`` is -the same except the Cb and Cr bytes are swapped, the CrCb plane starts -with a Cr byte. - -If the Y plane has pad bytes after each row, then the CbCr plane has as -many pad bytes after its rows. - -**Byte Order.** -Each cell is one byte. - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - start + 16: - - Cb\ :sub:`00` - - Cr\ :sub:`00` - - Cb\ :sub:`01` - - Cr\ :sub:`01` - * - start + 20: - - Cb\ :sub:`10` - - Cr\ :sub:`10` - - Cb\ :sub:`11` - - Cr\ :sub:`11` - - -**Color Sample Location:** - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - 2 - - - - 3 - * - 0 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - 1 - - Y - - - - Y - - Y - - - - Y - * - - * - 2 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - 3 - - Y - - - - Y - - Y - - - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv12m.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv12m.rst deleted file mode 100644 index 250f8b977605..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv12m.rst +++ /dev/null @@ -1,144 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-NV12M: -.. _v4l2-pix-fmt-nv12mt-16x16: -.. _V4L2-PIX-FMT-NV21M: - -*********************************************************************************** -V4L2_PIX_FMT_NV12M ('NM12'), V4L2_PIX_FMT_NV21M ('NM21'), V4L2_PIX_FMT_NV12MT_16X16 -*********************************************************************************** - - -V4L2_PIX_FMT_NV21M -V4L2_PIX_FMT_NV12MT_16X16 -Variation of ``V4L2_PIX_FMT_NV12`` and ``V4L2_PIX_FMT_NV21`` with planes -non contiguous in memory. - - -Description -=========== - -This is a multi-planar, two-plane version of the YUV 4:2:0 format. The -three components are separated into two sub-images or planes. -``V4L2_PIX_FMT_NV12M`` differs from ``V4L2_PIX_FMT_NV12`` in that the -two planes are non-contiguous in memory, i.e. the chroma plane do not -necessarily immediately follows the luma plane. The luminance data -occupies the first plane. The Y plane has one byte per pixel. In the -second plane there is a chrominance data with alternating chroma -samples. The CbCr plane is the same width, in bytes, as the Y plane (and -of the image), but is half as tall in pixels. Each CbCr pair belongs to -four pixels. For example, Cb\ :sub:`0`/Cr\ :sub:`0` belongs to -Y'\ :sub:`00`, Y'\ :sub:`01`, Y'\ :sub:`10`, Y'\ :sub:`11`. -``V4L2_PIX_FMT_NV12MT_16X16`` is the tiled version of -``V4L2_PIX_FMT_NV12M`` with 16x16 macroblock tiles. Here pixels are -arranged in 16x16 2D tiles and tiles are arranged in linear order in -memory. ``V4L2_PIX_FMT_NV21M`` is the same as ``V4L2_PIX_FMT_NV12M`` -except the Cb and Cr bytes are swapped, the CrCb plane starts with a Cr -byte. - -``V4L2_PIX_FMT_NV12M`` is intended to be used only in drivers and -applications that support the multi-planar API, described in -:ref:`planar-apis`. - -If the Y plane has pad bytes after each row, then the CbCr plane has as -many pad bytes after its rows. - -**Byte Order.** -Each cell is one byte. - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start0 + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start0 + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start0 + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start0 + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - - * - start1 + 0: - - Cb\ :sub:`00` - - Cr\ :sub:`00` - - Cb\ :sub:`01` - - Cr\ :sub:`01` - * - start1 + 4: - - Cb\ :sub:`10` - - Cr\ :sub:`10` - - Cb\ :sub:`11` - - Cr\ :sub:`11` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - 2 - - - - 3 - * - 0 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - 1 - - Y - - - - Y - - Y - - - - Y - * - - * - 2 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - - - C - - - * - 3 - - Y - - - - Y - - Y - - - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv12mt.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv12mt.rst deleted file mode 100644 index 46f63d793ec5..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv12mt.rst +++ /dev/null @@ -1,60 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-NV12MT: - -**************************** -V4L2_PIX_FMT_NV12MT ('TM12') -**************************** - -Formats with ½ horizontal and vertical chroma resolution. This format -has two planes - one for luminance and one for chrominance. Chroma -samples are interleaved. The difference to ``V4L2_PIX_FMT_NV12`` is the -memory layout. Pixels are grouped in macroblocks of 64x32 size. The -order of macroblocks in memory is also not standard. - - -Description -=========== - -This is the two-plane versions of the YUV 4:2:0 format where data is -grouped into 64x32 macroblocks. The three components are separated into -two sub-images or planes. The Y plane has one byte per pixel and pixels -are grouped into 64x32 macroblocks. The CbCr plane has the same width, -in bytes, as the Y plane (and the image), but is half as tall in pixels. -The chroma plane is also grouped into 64x32 macroblocks. - -Width of the buffer has to be aligned to the multiple of 128, and height -alignment is 32. Every four adjacent buffers - two horizontally and two -vertically are grouped together and are located in memory in Z or -flipped Z order. - -Layout of macroblocks in memory is presented in the following figure. - - -.. _nv12mt: - -.. kernel-figure:: nv12mt.svg - :alt: nv12mt.svg - :align: center - - V4L2_PIX_FMT_NV12MT macroblock Z shape memory layout - -The requirement that width is multiple of 128 is implemented because, -the Z shape cannot be cut in half horizontally. In case the vertical -resolution of macroblocks is odd then the last row of macroblocks is -arranged in a linear order. - -In case of chroma the layout is identical. Cb and Cr samples are -interleaved. Height of the buffer is aligned to 32. - - -.. _nv12mt_ex: - -.. kernel-figure:: nv12mt_example.svg - :alt: nv12mt_example.svg - :align: center - - Example V4L2_PIX_FMT_NV12MT memory layout of macroblocks - -Memory layout of macroblocks of ``V4L2_PIX_FMT_NV12MT`` format in most -extreme case. diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv16.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv16.rst deleted file mode 100644 index 22295fc0c359..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv16.rst +++ /dev/null @@ -1,153 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-NV16: -.. _V4L2-PIX-FMT-NV61: - -****************************************************** -V4L2_PIX_FMT_NV16 ('NV16'), V4L2_PIX_FMT_NV61 ('NV61') -****************************************************** - -V4L2_PIX_FMT_NV61 -Formats with ½ horizontal chroma resolution, also known as YUV 4:2:2. -One luminance and one chrominance plane with alternating chroma samples -as opposed to ``V4L2_PIX_FMT_YVU420`` - - -Description -=========== - -These are two-plane versions of the YUV 4:2:2 format. The three -components are separated into two sub-images or planes. The Y plane is -first. The Y plane has one byte per pixel. For ``V4L2_PIX_FMT_NV16``, a -combined CbCr plane immediately follows the Y plane in memory. The CbCr -plane is the same width and height, in bytes, as the Y plane (and of the -image). Each CbCr pair belongs to two pixels. For example, -Cb\ :sub:`0`/Cr\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`. -``V4L2_PIX_FMT_NV61`` is the same except the Cb and Cr bytes are -swapped, the CrCb plane starts with a Cr byte. - -If the Y plane has pad bytes after each row, then the CbCr plane has as -many pad bytes after its rows. - -**Byte Order.** -Each cell is one byte. - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - start + 16: - - Cb\ :sub:`00` - - Cr\ :sub:`00` - - Cb\ :sub:`01` - - Cr\ :sub:`01` - * - start + 20: - - Cb\ :sub:`10` - - Cr\ :sub:`10` - - Cb\ :sub:`11` - - Cr\ :sub:`11` - * - start + 24: - - Cb\ :sub:`20` - - Cr\ :sub:`20` - - Cb\ :sub:`21` - - Cr\ :sub:`21` - * - start + 28: - - Cb\ :sub:`30` - - Cr\ :sub:`30` - - Cb\ :sub:`31` - - Cr\ :sub:`31` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - 2 - - - - 3 - * - 0 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - 1 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - - * - 2 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - 3 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv16m.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv16m.rst deleted file mode 100644 index 812bf2ccabf0..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv16m.rst +++ /dev/null @@ -1,157 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-NV16M: -.. _v4l2-pix-fmt-nv61m: - -******************************************************** -V4L2_PIX_FMT_NV16M ('NM16'), V4L2_PIX_FMT_NV61M ('NM61') -******************************************************** - -V4L2_PIX_FMT_NV61M -Variation of ``V4L2_PIX_FMT_NV16`` and ``V4L2_PIX_FMT_NV61`` with planes -non contiguous in memory. - - -Description -=========== - -This is a multi-planar, two-plane version of the YUV 4:2:2 format. The -three components are separated into two sub-images or planes. -``V4L2_PIX_FMT_NV16M`` differs from ``V4L2_PIX_FMT_NV16`` in that the -two planes are non-contiguous in memory, i.e. the chroma plane does not -necessarily immediately follow the luma plane. The luminance data -occupies the first plane. The Y plane has one byte per pixel. In the -second plane there is chrominance data with alternating chroma samples. -The CbCr plane is the same width and height, in bytes, as the Y plane. -Each CbCr pair belongs to two pixels. For example, -Cb\ :sub:`0`/Cr\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`. -``V4L2_PIX_FMT_NV61M`` is the same as ``V4L2_PIX_FMT_NV16M`` except the -Cb and Cr bytes are swapped, the CrCb plane starts with a Cr byte. - -``V4L2_PIX_FMT_NV16M`` and ``V4L2_PIX_FMT_NV61M`` are intended to be -used only in drivers and applications that support the multi-planar API, -described in :ref:`planar-apis`. - -**Byte Order.** -Each cell is one byte. - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start0 + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start0 + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start0 + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start0 + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - - * - start1 + 0: - - Cb\ :sub:`00` - - Cr\ :sub:`00` - - Cb\ :sub:`02` - - Cr\ :sub:`02` - * - start1 + 4: - - Cb\ :sub:`10` - - Cr\ :sub:`10` - - Cb\ :sub:`12` - - Cr\ :sub:`12` - * - start1 + 8: - - Cb\ :sub:`20` - - Cr\ :sub:`20` - - Cb\ :sub:`22` - - Cr\ :sub:`22` - * - start1 + 12: - - Cb\ :sub:`30` - - Cr\ :sub:`30` - - Cb\ :sub:`32` - - Cr\ :sub:`32` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - 2 - - - - 3 - * - 0 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - 1 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - - * - 2 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - - * - 3 - - Y - - - - Y - - Y - - - - Y - * - - - - - C - - - - - - C - - diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv24.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv24.rst deleted file mode 100644 index bf1b94062fc2..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv24.rst +++ /dev/null @@ -1,95 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-NV24: -.. _V4L2-PIX-FMT-NV42: - -****************************************************** -V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42') -****************************************************** - -V4L2_PIX_FMT_NV42 -Formats with full horizontal and vertical chroma resolutions, also known -as YUV 4:4:4. One luminance and one chrominance plane with alternating -chroma samples as opposed to ``V4L2_PIX_FMT_YVU420`` - - -Description -=========== - -These are two-plane versions of the YUV 4:4:4 format. The three -components are separated into two sub-images or planes. The Y plane is -first, with each Y sample stored in one byte per pixel. For -``V4L2_PIX_FMT_NV24``, a combined CbCr plane immediately follows the Y -plane in memory. The CbCr plane has the same width and height, in -pixels, as the Y plane (and the image). Each line contains one CbCr pair -per pixel, with each Cb and Cr sample stored in one byte. -``V4L2_PIX_FMT_NV42`` is the same except that the Cb and Cr samples are -swapped, the CrCb plane starts with a Cr sample. - -If the Y plane has pad bytes after each row, then the CbCr plane has -twice as many pad bytes after its rows. - -**Byte Order.** -Each cell is one byte. - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - start + 16: - - Cb\ :sub:`00` - - Cr\ :sub:`00` - - Cb\ :sub:`01` - - Cr\ :sub:`01` - - Cb\ :sub:`02` - - Cr\ :sub:`02` - - Cb\ :sub:`03` - - Cr\ :sub:`03` - * - start + 24: - - Cb\ :sub:`10` - - Cr\ :sub:`10` - - Cb\ :sub:`11` - - Cr\ :sub:`11` - - Cb\ :sub:`12` - - Cr\ :sub:`12` - - Cb\ :sub:`13` - - Cr\ :sub:`13` - * - start + 32: - - Cb\ :sub:`20` - - Cr\ :sub:`20` - - Cb\ :sub:`21` - - Cr\ :sub:`21` - - Cb\ :sub:`22` - - Cr\ :sub:`22` - - Cb\ :sub:`23` - - Cr\ :sub:`23` - * - start + 40: - - Cb\ :sub:`30` - - Cr\ :sub:`30` - - Cb\ :sub:`31` - - Cr\ :sub:`31` - - Cb\ :sub:`32` - - Cr\ :sub:`32` - - Cb\ :sub:`33` - - Cr\ :sub:`33` diff --git a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst index 84262208dd1c..eb551b57557e 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst @@ -6,12 +6,32 @@ Packed YUV formats ****************** -Description -=========== +Similarly to the packed RGB formats, the packed YUV formats store the Y, Cb and +Cr components consecutively in memory. They may apply subsampling to the chroma +components and thus differ in how they interlave the three components. -Similar to the packed RGB formats these formats store the Y, Cb and Cr -component of each pixel in one 16 or 32 bit word. +.. note:: + + - In all the tables that follow, bit 7 is the most significant bit in a byte. + - 'Y', 'Cb' and 'Cr' denote bits of the luma, blue chroma (also known as + 'U') and red chroma (also known as 'V') components respectively. 'A' + denotes bits of the alpha component (if supported by the format), and 'X' + denotes padding bits. + + +4:4:4 Subsampling +================= +These formats do not subsample the chroma components and store each pixels as a +full triplet of Y, Cb and Cr values. + +The next table lists the packed YUV 4:4:4 formats with less than 8 bits per +component. They are named based on the order of the Y, Cb and Cr components as +seen in a 16-bit word, which is then stored in memory in little endian byte +order, and on the number of bits for each component. For instance the YUV565 +format stores a pixel in a 16-bit word [15:0] laid out at as [Y'\ :sub:`4-0` +Cb\ :sub:`5-0` Cr\ :sub:`4-0`], and stored in memory in two bytes, +[Cb\ :sub:`2-0` Cr\ :sub:`4-0`] followed by [Y'\ :sub:`4-0` Cb\ :sub:`5-3`]. .. raw:: latex @@ -19,11 +39,9 @@ component of each pixel in one 16 or 32 bit word. \tiny \setlength{\tabcolsep}{2pt} -.. _packed-yuv-formats: - -.. tabularcolumns:: |p{2.5cm}|p{0.69cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}| +.. tabularcolumns:: |p{2.5cm}|p{0.69cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}|p{0.31cm}| -.. flat-table:: Packed YUV Image Formats +.. flat-table:: Packed YUV 4:4:4 Image Formats (less than 8bpc) :header-rows: 2 :stub-columns: 0 @@ -34,10 +52,6 @@ component of each pixel in one 16 or 32 bit word. - :cspan:`7` Byte 1 - - :cspan:`7` Byte 2 - - - :cspan:`7` Byte 3 - * - - - 7 @@ -58,24 +72,6 @@ component of each pixel in one 16 or 32 bit word. - 1 - 0 - - 7 - - 6 - - 5 - - 4 - - 3 - - 2 - - 1 - - 0 - - - 7 - - 6 - - 5 - - 4 - - 3 - - 2 - - 1 - - 0 - * .. _V4L2-PIX-FMT-YUV444: - ``V4L2_PIX_FMT_YUV444`` @@ -99,8 +95,6 @@ component of each pixel in one 16 or 32 bit word. - Y'\ :sub:`1` - Y'\ :sub:`0` - - :cspan:`15` - * .. _V4L2-PIX-FMT-YUV555: - ``V4L2_PIX_FMT_YUV555`` @@ -124,7 +118,6 @@ component of each pixel in one 16 or 32 bit word. - Cb\ :sub:`4` - Cb\ :sub:`3` - - :cspan:`15` * .. _V4L2-PIX-FMT-YUV565: - ``V4L2_PIX_FMT_YUV565`` @@ -148,226 +141,219 @@ component of each pixel in one 16 or 32 bit word. - Cb\ :sub:`4` - Cb\ :sub:`3` - - :cspan:`15` +.. raw:: latex - * .. _V4L2-PIX-FMT-YUV32: + \endgroup - - ``V4L2_PIX_FMT_YUV32`` - - 'YUV4' +.. note:: - - a\ :sub:`7` - - a\ :sub:`6` - - a\ :sub:`5` - - a\ :sub:`4` - - a\ :sub:`3` - - a\ :sub:`2` - - a\ :sub:`1` - - a\ :sub:`0` + For the YUV444 and YUV555 formats, the value of alpha bits is undefined + when reading from the driver, ignored when writing to the driver, except + when alpha blending has been negotiated for a :ref:`Video Overlay + <overlay>` or :ref:`Video Output Overlay <osd>`. - - Y'\ :sub:`7` - - Y'\ :sub:`6` - - Y'\ :sub:`5` - - Y'\ :sub:`4` - - Y'\ :sub:`3` - - Y'\ :sub:`2` - - Y'\ :sub:`1` - - Y'\ :sub:`0` - - Cb\ :sub:`7` - - Cb\ :sub:`6` - - Cb\ :sub:`5` - - Cb\ :sub:`4` - - Cb\ :sub:`3` - - Cb\ :sub:`2` - - Cb\ :sub:`1` - - Cb\ :sub:`0` +The next table lists the packed YUV 4:4:4 formats with 8 bits per component. +They are named based on the order of the Y, Cb and Cr components as stored in +memory, and on the total number of bits per pixel. For instance, the VUYX32 +format stores a pixel with Cr\ :sub:`7-0` in the first byte, Cb\ :sub:`7-0` in +the second byte and Y'\ :sub:`7-0` in the third byte. - - Cr\ :sub:`7` - - Cr\ :sub:`6` - - Cr\ :sub:`5` - - Cr\ :sub:`4` - - Cr\ :sub:`3` - - Cr\ :sub:`2` - - Cr\ :sub:`1` - - Cr\ :sub:`0` +.. flat-table:: Packed YUV Image Formats (8bpc) + :header-rows: 1 + :stub-columns: 0 - * .. _V4L2-PIX-FMT-AYUV32: + * - Identifier + - Code + - Byte 0 + - Byte 1 + - Byte 2 + - Byte 3 - - ``V4L2_PIX_FMT_AYUV32`` - - 'AYUV' + * .. _V4L2-PIX-FMT-YUV32: - - a\ :sub:`7` - - a\ :sub:`6` - - a\ :sub:`5` - - a\ :sub:`4` - - a\ :sub:`3` - - a\ :sub:`2` - - a\ :sub:`1` - - a\ :sub:`0` + - ``V4L2_PIX_FMT_YUV32`` + - 'YUV4' - - Y'\ :sub:`7` - - Y'\ :sub:`6` - - Y'\ :sub:`5` - - Y'\ :sub:`4` - - Y'\ :sub:`3` - - Y'\ :sub:`2` - - Y'\ :sub:`1` - - Y'\ :sub:`0` + - A\ :sub:`7-0` + - Y'\ :sub:`7-0` + - Cb\ :sub:`7-0` + - Cr\ :sub:`7-0` - - Cb\ :sub:`7` - - Cb\ :sub:`6` - - Cb\ :sub:`5` - - Cb\ :sub:`4` - - Cb\ :sub:`3` - - Cb\ :sub:`2` - - Cb\ :sub:`1` - - Cb\ :sub:`0` + * .. _V4L2-PIX-FMT-AYUV32: - - Cr\ :sub:`7` - - Cr\ :sub:`6` - - Cr\ :sub:`5` - - Cr\ :sub:`4` - - Cr\ :sub:`3` - - Cr\ :sub:`2` - - Cr\ :sub:`1` - - Cr\ :sub:`0` + - ``V4L2_PIX_FMT_AYUV32`` + - 'AYUV' + + - A\ :sub:`7-0` + - Y'\ :sub:`7-0` + - Cb\ :sub:`7-0` + - Cr\ :sub:`7-0` * .. _V4L2-PIX-FMT-XYUV32: - ``V4L2_PIX_FMT_XYUV32`` - 'XYUV' - - - - - - - - - - - - - - - - - - - Y'\ :sub:`7` - - Y'\ :sub:`6` - - Y'\ :sub:`5` - - Y'\ :sub:`4` - - Y'\ :sub:`3` - - Y'\ :sub:`2` - - Y'\ :sub:`1` - - Y'\ :sub:`0` - - - Cb\ :sub:`7` - - Cb\ :sub:`6` - - Cb\ :sub:`5` - - Cb\ :sub:`4` - - Cb\ :sub:`3` - - Cb\ :sub:`2` - - Cb\ :sub:`1` - - Cb\ :sub:`0` - - - Cr\ :sub:`7` - - Cr\ :sub:`6` - - Cr\ :sub:`5` - - Cr\ :sub:`4` - - Cr\ :sub:`3` - - Cr\ :sub:`2` - - Cr\ :sub:`1` - - Cr\ :sub:`0` + - X\ :sub:`7-0` + - Y'\ :sub:`7-0` + - Cb\ :sub:`7-0` + - Cr\ :sub:`7-0` * .. _V4L2-PIX-FMT-VUYA32: - ``V4L2_PIX_FMT_VUYA32`` - 'VUYA' - - Cr\ :sub:`7` - - Cr\ :sub:`6` - - Cr\ :sub:`5` - - Cr\ :sub:`4` - - Cr\ :sub:`3` - - Cr\ :sub:`2` - - Cr\ :sub:`1` - - Cr\ :sub:`0` - - - Cb\ :sub:`7` - - Cb\ :sub:`6` - - Cb\ :sub:`5` - - Cb\ :sub:`4` - - Cb\ :sub:`3` - - Cb\ :sub:`2` - - Cb\ :sub:`1` - - Cb\ :sub:`0` - - - Y'\ :sub:`7` - - Y'\ :sub:`6` - - Y'\ :sub:`5` - - Y'\ :sub:`4` - - Y'\ :sub:`3` - - Y'\ :sub:`2` - - Y'\ :sub:`1` - - Y'\ :sub:`0` - - - a\ :sub:`7` - - a\ :sub:`6` - - a\ :sub:`5` - - a\ :sub:`4` - - a\ :sub:`3` - - a\ :sub:`2` - - a\ :sub:`1` - - a\ :sub:`0` + - Cr\ :sub:`7-0` + - Cb\ :sub:`7-0` + - Y'\ :sub:`7-0` + - A\ :sub:`7-0` * .. _V4L2-PIX-FMT-VUYX32: - ``V4L2_PIX_FMT_VUYX32`` - 'VUYX' - - Cr\ :sub:`7` - - Cr\ :sub:`6` - - Cr\ :sub:`5` - - Cr\ :sub:`4` - - Cr\ :sub:`3` - - Cr\ :sub:`2` - - Cr\ :sub:`1` - - Cr\ :sub:`0` + - Cr\ :sub:`7-0` + - Cb\ :sub:`7-0` + - Y'\ :sub:`7-0` + - X\ :sub:`7-0` - - Cb\ :sub:`7` - - Cb\ :sub:`6` - - Cb\ :sub:`5` - - Cb\ :sub:`4` - - Cb\ :sub:`3` - - Cb\ :sub:`2` - - Cb\ :sub:`1` - - Cb\ :sub:`0` +.. note:: - - Y'\ :sub:`7` - - Y'\ :sub:`6` - - Y'\ :sub:`5` - - Y'\ :sub:`4` + - The alpha component is expected to contain a meaningful value that can be + used by drivers and applications. + - The padding bits contain undefined values that must be ignored by all + applications and drivers. + + +4:2:2 Subsampling +================= + +These formats, commonly referred to as YUYV or YUY2, subsample the chroma +components horizontally by 2, storing 2 pixels in 4 bytes. + +.. flat-table:: Packed YUV 4:2:2 Formats + :header-rows: 1 + :stub-columns: 0 + + * - Identifier + - Code + - Byte 0 + - Byte 1 + - Byte 2 + - Byte 3 + - Byte 4 + - Byte 5 + - Byte 6 + - Byte 7 + * .. _V4L2-PIX-FMT-UYVY: + + - ``V4L2_PIX_FMT_UYVY`` + - 'UYVY' + + - Cb\ :sub:`0` + - Y'\ :sub:`0` + - Cr\ :sub:`0` + - Y'\ :sub:`1` + - Cb\ :sub:`2` + - Y'\ :sub:`2` + - Cr\ :sub:`2` - Y'\ :sub:`3` + * .. _V4L2-PIX-FMT-VYUY: + + - ``V4L2_PIX_FMT_VYUY`` + - 'VYUY' + + - Cr\ :sub:`0` + - Y'\ :sub:`0` + - Cb\ :sub:`0` + - Y'\ :sub:`1` + - Cr\ :sub:`2` - Y'\ :sub:`2` + - Cb\ :sub:`2` + - Y'\ :sub:`3` + * .. _V4L2-PIX-FMT-YUYV: + + - ``V4L2_PIX_FMT_YUYV`` + - 'YUYV' + + - Y'\ :sub:`0` + - Cb\ :sub:`0` - Y'\ :sub:`1` + - Cr\ :sub:`0` + - Y'\ :sub:`2` + - Cb\ :sub:`2` + - Y'\ :sub:`3` + - Cr\ :sub:`2` + * .. _V4L2-PIX-FMT-YVYU: + + - ``V4L2_PIX_FMT_YVYU`` + - 'YVYU' + - Y'\ :sub:`0` + - Cr\ :sub:`0` + - Y'\ :sub:`1` + - Cb\ :sub:`0` + - Y'\ :sub:`2` + - Cr\ :sub:`2` + - Y'\ :sub:`3` + - Cb\ :sub:`2` - - - - - - - - - - - - - - - - +**Color Sample Location:** +Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>` +horizontally. -.. raw:: latex - \endgroup +4:1:1 Subsampling +================= + +This format subsamples the chroma components horizontally by 4, storing 8 +pixels in 12 bytes. + +.. flat-table:: Packed YUV 4:1:1 Formats + :header-rows: 1 + :stub-columns: 0 + + * - Identifier + - Code + - Byte 0 + - Byte 1 + - Byte 2 + - Byte 3 + - Byte 4 + - Byte 5 + - Byte 6 + - Byte 7 + - Byte 8 + - Byte 9 + - Byte 10 + - Byte 11 + * .. _V4L2-PIX-FMT-Y41P: + + - ``V4L2_PIX_FMT_Y41P`` + - 'Y41P' + + - Cb\ :sub:`0` + - Y'\ :sub:`0` + - Cr\ :sub:`0` + - Y'\ :sub:`1` + - Cb\ :sub:`4` + - Y'\ :sub:`2` + - Cr\ :sub:`4` + - Y'\ :sub:`3` + - Y'\ :sub:`4` + - Y'\ :sub:`5` + - Y'\ :sub:`6` + - Y'\ :sub:`7` .. note:: - #) Bit 7 is the most significant bit; + Do not confuse ``V4L2_PIX_FMT_Y41P`` with + :ref:`V4L2_PIX_FMT_YUV411P <V4L2-PIX-FMT-YUV411P>`. Y41P is derived from + "YUV 4:1:1 *packed*", while YUV411P stands for "YUV 4:1:1 *planar*". - #) The value of a = alpha bits is undefined when reading from the driver, - ignored when writing to the driver, except when alpha blending has - been negotiated for a :ref:`Video Overlay <overlay>` or - :ref:`Video Output Overlay <osd>` for the formats Y444, YUV555 and - YUV4. However, for formats AYUV32 and VUYA32, the alpha component is - expected to contain a meaningful value that can be used by drivers - and applications. And, the formats XYUV32 and VUYX32 contain undefined - alpha values that must be ignored by all applications and drivers. +**Color Sample Location:** +Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>` +horizontally. diff --git a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst index 9d827097c1d9..897676ee2c9d 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst @@ -6,13 +6,62 @@ RGB Formats *********** -Description -=========== - -These formats are designed to match the pixel formats of typical PC -graphics frame buffers. They occupy 8, 16, 24 or 32 bits per pixel. -These are all packed-pixel formats, meaning all the data for a pixel lie -next to each other in memory. +These formats encode each pixel as a triplet of RGB values. They are packed +formats, meaning that the RGB values for one pixel are stored consecutively in +memory and each pixel consumes an integer number of bytes. When the number of +bits required to store a pixel is not aligned to a byte boundary, the data is +padded with additional bits to fill the remaining byte. + +The formats differ by the number of bits per RGB component (typically but not +always the same for all components), the order of components in memory, and the +presence of an alpha component or additional padding bits. + +The usage and value of the alpha bits in formats that support them (named ARGB +or a permutation thereof, collectively referred to as alpha formats) depend on +the device type and hardware operation. :ref:`Capture <capture>` devices +(including capture queues of mem-to-mem devices) fill the alpha component in +memory. When the device captures an alpha channel the alpha component will have +a meaningful value. Otherwise, when the device doesn't capture an alpha channel +but can set the alpha bit to a user-configurable value, the +:ref:`V4L2_CID_ALPHA_COMPONENT <v4l2-alpha-component>` control is used to +specify that alpha value, and the alpha component of all pixels will be set to +the value specified by that control. Otherwise a corresponding format without +an alpha component (XRGB or XBGR) must be used instead of an alpha format. + +:ref:`Output <output>` devices (including output queues of mem-to-mem devices +and :ref:`video output overlay <osd>` devices) read the alpha component from +memory. When the device processes the alpha channel the alpha component must be +filled with meaningful values by applications. Otherwise a corresponding format +without an alpha component (XRGB or XBGR) must be used instead of an alpha +format. + +Formats that contain padding bits are named XRGB (or a permutation thereof). +The padding bits contain undefined values and must be ignored by applications, +devices and drivers, for both :ref:`capture` and :ref:`output` devices. + +.. note:: + + - In all the tables that follow, bit 7 is the most significant bit in a byte. + - 'r', 'g' and 'b' denote bits of the red, green and blue components + respectively. 'a' denotes bits of the alpha component (if supported by the + format), and 'x' denotes padding bits. + + +Less Than 8 Bits Per Component +============================== + +These formats store an RGB triplet in one, two or four bytes. They are named +based on the order of the RGB components as seen in a 8-, 16- or 32-bit word, +which is then stored in memory in little endian byte order (unless otherwise +noted by the presence of bit 31 in the 4CC value), and on the number of bits +for each component. For instance, the RGB565 format stores a pixel in a 16-bit +word [15:0] laid out at as [R\ :sub:`4` R\ :sub:`3` R\ :sub:`2` R\ :sub:`1` +R\ :sub:`0` G\ :sub:`5` G\ :sub:`4` G\ :sub:`3` G\ :sub:`2` G\ :sub:`1` +G\ :sub:`0` B\ :sub:`4` B\ :sub:`3` B\ :sub:`2` B\ :sub:`1` B\ :sub:`0`], and +stored in memory in two bytes, [R\ :sub:`4` R\ :sub:`3` R\ :sub:`2` R\ :sub:`1` +R\ :sub:`0` G\ :sub:`5` G\ :sub:`4` G\ :sub:`3`] followed by [G\ :sub:`2` +G\ :sub:`1` G\ :sub:`0` B\ :sub:`4` B\ :sub:`3` B\ :sub:`2` B\ :sub:`1` +B\ :sub:`0`]. .. raw:: latex @@ -23,7 +72,7 @@ next to each other in memory. .. tabularcolumns:: |p{2.8cm}|p{2.0cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}| -.. flat-table:: RGB Image Formats +.. flat-table:: RGB Formats With Less Than 8 Bits Per Component :header-rows: 2 :stub-columns: 0 @@ -121,10 +170,10 @@ next to each other in memory. - b\ :sub:`1` - b\ :sub:`0` - - `-` - - `-` - - `-` - - `-` + - x + - x + - x + - x - r\ :sub:`3` - r\ :sub:`2` - r\ :sub:`1` @@ -162,10 +211,10 @@ next to each other in memory. - b\ :sub:`2` - b\ :sub:`1` - b\ :sub:`0` - - `-` - - `-` - - `-` - - `-` + - x + - x + - x + - x - r\ :sub:`3` - r\ :sub:`2` @@ -213,10 +262,10 @@ next to each other in memory. - r\ :sub:`1` - r\ :sub:`0` - - `-` - - `-` - - `-` - - `-` + - x + - x + - x + - x - b\ :sub:`3` - b\ :sub:`2` - b\ :sub:`1` @@ -254,10 +303,10 @@ next to each other in memory. - r\ :sub:`2` - r\ :sub:`1` - r\ :sub:`0` - - `-` - - `-` - - `-` - - `-` + - x + - x + - x + - x - b\ :sub:`3` - b\ :sub:`2` @@ -305,7 +354,7 @@ next to each other in memory. - b\ :sub:`1` - b\ :sub:`0` - - `-` + - x - r\ :sub:`4` - r\ :sub:`3` - r\ :sub:`2` @@ -349,7 +398,7 @@ next to each other in memory. - b\ :sub:`2` - b\ :sub:`1` - b\ :sub:`0` - - `-` + - x - r\ :sub:`4` - r\ :sub:`3` @@ -397,7 +446,7 @@ next to each other in memory. - r\ :sub:`1` - r\ :sub:`0` - - `-` + - x - b\ :sub:`4` - b\ :sub:`3` - b\ :sub:`2` @@ -441,7 +490,7 @@ next to each other in memory. - r\ :sub:`2` - r\ :sub:`1` - r\ :sub:`0` - - `-` + - x - b\ :sub:`4` - b\ :sub:`3` @@ -503,7 +552,7 @@ next to each other in memory. - ``V4L2_PIX_FMT_XRGB555X`` - 'XR15' | (1 << 31) - - `-` + - x - r\ :sub:`4` - r\ :sub:`3` - r\ :sub:`2` @@ -544,538 +593,188 @@ next to each other in memory. - b\ :sub:`1` - b\ :sub:`0` - - * .. _V4L2-PIX-FMT-BGR24: + * .. _V4L2-PIX-FMT-BGR666: - - ``V4L2_PIX_FMT_BGR24`` - - 'BGR3' + - ``V4L2_PIX_FMT_BGR666`` + - 'BGRH' - - b\ :sub:`7` - - b\ :sub:`6` - b\ :sub:`5` - b\ :sub:`4` - b\ :sub:`3` - b\ :sub:`2` - b\ :sub:`1` - b\ :sub:`0` - - - g\ :sub:`7` - - g\ :sub:`6` - g\ :sub:`5` - g\ :sub:`4` + - g\ :sub:`3` - g\ :sub:`2` - g\ :sub:`1` - g\ :sub:`0` - - - r\ :sub:`7` - - r\ :sub:`6` - r\ :sub:`5` - r\ :sub:`4` - r\ :sub:`3` - r\ :sub:`2` + - r\ :sub:`1` - r\ :sub:`0` - - - * .. _V4L2-PIX-FMT-RGB24: + - x + - x + - x + - x + - x + - x - - ``V4L2_PIX_FMT_RGB24`` - - 'RGB3' + - x + - x + - x + - x + - x + - x + - x + - x - - r\ :sub:`7` - - r\ :sub:`6` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` - - r\ :sub:`1` - - r\ :sub:`0` +.. raw:: latex - - g\ :sub:`7` - - g\ :sub:`6` - - g\ :sub:`5` - - g\ :sub:`4` - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` + \endgroup - - b\ :sub:`7` - - b\ :sub:`6` - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` - - - * .. _V4L2-PIX-FMT-BGR666: - - ``V4L2_PIX_FMT_BGR666`` - - 'BGRH' +8 Bits Per Component +==================== - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` - - g\ :sub:`5` - - g\ :sub:`4` +These formats store an RGB triplet in three or four bytes. They are named based +on the order of the RGB components as stored in memory, and on the total number +of bits per pixel. For instance, RGB24 format stores a pixel with [R\ :sub:`7` +R\ :sub:`6` R\ :sub:`5` R\ :sub:`4` R\ :sub:`3` R\ :sub:`2` R\ :sub:`1` +R\ :sub:`0`] in the first byte, [G\ :sub:`7` G\ :sub:`6` G\ :sub:`5` G\ :sub:`4` +G\ :sub:`3` G\ :sub:`2` G\ :sub:`1` G\ :sub:`0`] in the second byte and +[B\ :sub:`7` B\ :sub:`6` B\ :sub:`5` B\ :sub:`4` B\ :sub:`3` B\ :sub:`2` +B\ :sub:`1` B\ :sub:`0`] in the third byte. This differs from the DRM format +nomenclature that instead use the order of components as seen in a 24- or +32-bit little endian word. - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` +.. raw:: latex - - r\ :sub:`1` - - r\ :sub:`0` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - * .. _V4L2-PIX-FMT-ABGR32: + \begingroup + \tiny + \setlength{\tabcolsep}{2pt} - - ``V4L2_PIX_FMT_ABGR32`` - - 'AR24' +.. tabularcolumns:: |p{2.8cm}|p{2.0cm}|p{2.0cm}|p{2.0cm}|p{2.0cm}|p{2.0cm}|p{2.0cm}|p{2.0cm}| - - b\ :sub:`7` - - b\ :sub:`6` - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` - - g\ :sub:`7` - - g\ :sub:`6` - - g\ :sub:`5` - - g\ :sub:`4` - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` +.. flat-table:: RGB Formats With 8 Bits Per Component + :header-rows: 1 + :stub-columns: 0 - - r\ :sub:`7` - - r\ :sub:`6` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` - - r\ :sub:`1` - - r\ :sub:`0` + * - Identifier + - Code + - Byte 0 in memory + - Byte 1 + - Byte 2 + - Byte 3 + * .. _V4L2-PIX-FMT-BGR24: - - a\ :sub:`7` - - a\ :sub:`6` - - a\ :sub:`5` - - a\ :sub:`4` - - a\ :sub:`3` - - a\ :sub:`2` - - a\ :sub:`1` - - a\ :sub:`0` - * .. _V4L2-PIX-FMT-XBGR32: + - ``V4L2_PIX_FMT_BGR24`` + - 'BGR3' - - ``V4L2_PIX_FMT_XBGR32`` - - 'XR24' + - G\ :sub:`7-0` + - B\ :sub:`7-0` + - R\ :sub:`7-0` + - + * .. _V4L2-PIX-FMT-RGB24: - - b\ :sub:`7` - - b\ :sub:`6` - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` + - ``V4L2_PIX_FMT_RGB24`` + - 'RGB3' - - g\ :sub:`7` - - g\ :sub:`6` - - g\ :sub:`5` - - g\ :sub:`4` - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` + - R\ :sub:`7-0` + - G\ :sub:`7-0` + - B\ :sub:`7-0` + - + * .. _V4L2-PIX-FMT-ABGR32: - - r\ :sub:`7` - - r\ :sub:`6` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` - - r\ :sub:`1` - - r\ :sub:`0` + - ``V4L2_PIX_FMT_ABGR32`` + - 'AR24' - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` + - B\ :sub:`7-0` + - G\ :sub:`7-0` + - R\ :sub:`7-0` + - A\ :sub:`7-0` + * .. _V4L2-PIX-FMT-XBGR32: + + - ``V4L2_PIX_FMT_XBGR32`` + - 'XR24' + + - B\ :sub:`7-0` + - G\ :sub:`7-0` + - R\ :sub:`7-0` + - X\ :sub:`7-0` * .. _V4L2-PIX-FMT-BGRA32: - ``V4L2_PIX_FMT_BGRA32`` - 'RA24' - - a\ :sub:`7` - - a\ :sub:`6` - - a\ :sub:`5` - - a\ :sub:`4` - - a\ :sub:`3` - - a\ :sub:`2` - - a\ :sub:`1` - - a\ :sub:`0` - - - b\ :sub:`7` - - b\ :sub:`6` - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` - - - g\ :sub:`7` - - g\ :sub:`6` - - g\ :sub:`5` - - g\ :sub:`4` - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` - - - r\ :sub:`7` - - r\ :sub:`6` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` - - r\ :sub:`1` - - r\ :sub:`0` + - A\ :sub:`7-0` + - B\ :sub:`7-0` + - G\ :sub:`7-0` + - R\ :sub:`7-0` * .. _V4L2-PIX-FMT-BGRX32: - ``V4L2_PIX_FMT_BGRX32`` - 'RX24' - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - - b\ :sub:`7` - - b\ :sub:`6` - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` - - - g\ :sub:`7` - - g\ :sub:`6` - - g\ :sub:`5` - - g\ :sub:`4` - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` - - - r\ :sub:`7` - - r\ :sub:`6` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` - - r\ :sub:`1` - - r\ :sub:`0` + - X\ :sub:`7-0` + - B\ :sub:`7-0` + - G\ :sub:`7-0` + - R\ :sub:`7-0` * .. _V4L2-PIX-FMT-RGBA32: - ``V4L2_PIX_FMT_RGBA32`` - 'AB24' - - r\ :sub:`7` - - r\ :sub:`6` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` - - r\ :sub:`1` - - r\ :sub:`0` - - - g\ :sub:`7` - - g\ :sub:`6` - - g\ :sub:`5` - - g\ :sub:`4` - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` - - - b\ :sub:`7` - - b\ :sub:`6` - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` - - - a\ :sub:`7` - - a\ :sub:`6` - - a\ :sub:`5` - - a\ :sub:`4` - - a\ :sub:`3` - - a\ :sub:`2` - - a\ :sub:`1` - - a\ :sub:`0` + - R\ :sub:`7-0` + - G\ :sub:`7-0` + - B\ :sub:`7-0` + - A\ :sub:`7-0` * .. _V4L2-PIX-FMT-RGBX32: - ``V4L2_PIX_FMT_RGBX32`` - 'XB24' - - r\ :sub:`7` - - r\ :sub:`6` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` - - r\ :sub:`1` - - r\ :sub:`0` - - - g\ :sub:`7` - - g\ :sub:`6` - - g\ :sub:`5` - - g\ :sub:`4` - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` - - - b\ :sub:`7` - - b\ :sub:`6` - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` - - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` + - R\ :sub:`7-0` + - G\ :sub:`7-0` + - B\ :sub:`7-0` + - X\ :sub:`7-0` * .. _V4L2-PIX-FMT-ARGB32: - ``V4L2_PIX_FMT_ARGB32`` - 'BA24' - - a\ :sub:`7` - - a\ :sub:`6` - - a\ :sub:`5` - - a\ :sub:`4` - - a\ :sub:`3` - - a\ :sub:`2` - - a\ :sub:`1` - - a\ :sub:`0` - - - r\ :sub:`7` - - r\ :sub:`6` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` - - r\ :sub:`1` - - r\ :sub:`0` - - - g\ :sub:`7` - - g\ :sub:`6` - - g\ :sub:`5` - - g\ :sub:`4` - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` - - - b\ :sub:`7` - - b\ :sub:`6` - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` + - A\ :sub:`7-0` + - R\ :sub:`7-0` + - G\ :sub:`7-0` + - B\ :sub:`7-0` * .. _V4L2-PIX-FMT-XRGB32: - ``V4L2_PIX_FMT_XRGB32`` - 'BX24' - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - `-` - - - r\ :sub:`7` - - r\ :sub:`6` - - r\ :sub:`5` - - r\ :sub:`4` - - r\ :sub:`3` - - r\ :sub:`2` - - r\ :sub:`1` - - r\ :sub:`0` - - - g\ :sub:`7` - - g\ :sub:`6` - - g\ :sub:`5` - - g\ :sub:`4` - - g\ :sub:`3` - - g\ :sub:`2` - - g\ :sub:`1` - - g\ :sub:`0` - - - b\ :sub:`7` - - b\ :sub:`6` - - b\ :sub:`5` - - b\ :sub:`4` - - b\ :sub:`3` - - b\ :sub:`2` - - b\ :sub:`1` - - b\ :sub:`0` + - X\ :sub:`7-0` + - R\ :sub:`7-0` + - G\ :sub:`7-0` + - B\ :sub:`7-0` .. raw:: latex \endgroup -.. note:: Bit 7 is the most significant bit. - -The usage and value of the alpha bits (a) in the ARGB and ABGR formats -(collectively referred to as alpha formats) depend on the device type -and hardware operation. :ref:`Capture <capture>` devices (including -capture queues of mem-to-mem devices) fill the alpha component in -memory. When the device outputs an alpha channel the alpha component -will have a meaningful value. Otherwise, when the device doesn't output -an alpha channel but can set the alpha bit to a user-configurable value, -the :ref:`V4L2_CID_ALPHA_COMPONENT <v4l2-alpha-component>` control -is used to specify that alpha value, and the alpha component of all -pixels will be set to the value specified by that control. Otherwise a -corresponding format without an alpha component (XRGB or XBGR) must be -used instead of an alpha format. - -:ref:`Output <output>` devices (including output queues of mem-to-mem -devices and :ref:`video output overlay <osd>` devices) read the alpha -component from memory. When the device processes the alpha channel the -alpha component must be filled with meaningful values by applications. -Otherwise a corresponding format without an alpha component (XRGB or -XBGR) must be used instead of an alpha format. - -The XRGB and XBGR formats contain undefined bits (-). Applications, -devices and drivers must ignore those bits, for both -:ref:`capture` and :ref:`output` devices. - -**Byte Order.** -Each cell is one byte. - - -.. raw:: latex - - \small - -.. tabularcolumns:: |p{3.1cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}|p{0.8cm}| - -.. flat-table:: RGB byte order - :header-rows: 0 - :stub-columns: 0 - :widths: 11 3 3 3 3 3 3 3 3 3 3 3 3 - - * - start + 0: - - B\ :sub:`00` - - G\ :sub:`00` - - R\ :sub:`00` - - B\ :sub:`01` - - G\ :sub:`01` - - R\ :sub:`01` - - B\ :sub:`02` - - G\ :sub:`02` - - R\ :sub:`02` - - B\ :sub:`03` - - G\ :sub:`03` - - R\ :sub:`03` - * - start + 12: - - B\ :sub:`10` - - G\ :sub:`10` - - R\ :sub:`10` - - B\ :sub:`11` - - G\ :sub:`11` - - R\ :sub:`11` - - B\ :sub:`12` - - G\ :sub:`12` - - R\ :sub:`12` - - B\ :sub:`13` - - G\ :sub:`13` - - R\ :sub:`13` - * - start + 24: - - B\ :sub:`20` - - G\ :sub:`20` - - R\ :sub:`20` - - B\ :sub:`21` - - G\ :sub:`21` - - R\ :sub:`21` - - B\ :sub:`22` - - G\ :sub:`22` - - R\ :sub:`22` - - B\ :sub:`23` - - G\ :sub:`23` - - R\ :sub:`23` - * - start + 36: - - B\ :sub:`30` - - G\ :sub:`30` - - R\ :sub:`30` - - B\ :sub:`31` - - G\ :sub:`31` - - R\ :sub:`31` - - B\ :sub:`32` - - G\ :sub:`32` - - R\ :sub:`32` - - B\ :sub:`33` - - G\ :sub:`33` - - R\ :sub:`33` - -.. raw:: latex - - \normalsize -Formats defined in :ref:`pixfmt-rgb-deprecated` are deprecated and -must not be used by new drivers. They are documented here for reference. -The meaning of their alpha bits ``(a)`` are ill-defined and interpreted as in -either the corresponding ARGB or XRGB format, depending on the driver. +Deprecated RGB Formats +====================== +Formats defined in :ref:`pixfmt-rgb-deprecated` are deprecated and must not be +used by new drivers. They are documented here for reference. The meaning of +their alpha bits ``(a)`` is ill-defined and they are interpreted as in either +the corresponding ARGB or XRGB format, depending on the driver. .. raw:: latex diff --git a/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst b/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst deleted file mode 100644 index bae975fb14f6..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst +++ /dev/null @@ -1,110 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-UYVY: - -************************** -V4L2_PIX_FMT_UYVY ('UYVY') -************************** - - -Variation of ``V4L2_PIX_FMT_YUYV`` with different order of samples in -memory - - -Description -=========== - -In this format each four bytes is two pixels. Each four bytes is two -Y's, a Cb and a Cr. Each Y goes to one of the pixels, and the Cb and Cr -belong to both pixels. As you can see, the Cr and Cb components have -half the horizontal resolution of the Y component. - -**Byte Order.** -Each cell is one byte. - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Cb\ :sub:`00` - - Y'\ :sub:`00` - - Cr\ :sub:`00` - - Y'\ :sub:`01` - - Cb\ :sub:`01` - - Y'\ :sub:`02` - - Cr\ :sub:`01` - - Y'\ :sub:`03` - * - start + 8: - - Cb\ :sub:`10` - - Y'\ :sub:`10` - - Cr\ :sub:`10` - - Y'\ :sub:`11` - - Cb\ :sub:`11` - - Y'\ :sub:`12` - - Cr\ :sub:`11` - - Y'\ :sub:`13` - * - start + 16: - - Cb\ :sub:`20` - - Y'\ :sub:`20` - - Cr\ :sub:`20` - - Y'\ :sub:`21` - - Cb\ :sub:`21` - - Y'\ :sub:`22` - - Cr\ :sub:`21` - - Y'\ :sub:`23` - * - start + 24: - - Cb\ :sub:`30` - - Y'\ :sub:`30` - - Cr\ :sub:`30` - - Y'\ :sub:`31` - - Cb\ :sub:`31` - - Y'\ :sub:`32` - - Cr\ :sub:`31` - - Y'\ :sub:`33` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - 2 - - - - 3 - * - 0 - - Y - - C - - Y - - Y - - C - - Y - * - 1 - - Y - - C - - Y - - Y - - C - - Y - * - 2 - - Y - - C - - Y - - Y - - C - - Y - * - 3 - - Y - - C - - Y - - Y - - C - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst b/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst deleted file mode 100644 index aff8588b67a9..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst +++ /dev/null @@ -1,108 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-VYUY: - -************************** -V4L2_PIX_FMT_VYUY ('VYUY') -************************** - - -Variation of ``V4L2_PIX_FMT_YUYV`` with different order of samples in -memory - - -Description -=========== - -In this format each four bytes is two pixels. Each four bytes is two -Y's, a Cb and a Cr. Each Y goes to one of the pixels, and the Cb and Cr -belong to both pixels. As you can see, the Cr and Cb components have -half the horizontal resolution of the Y component. - -**Byte Order.** -Each cell is one byte. - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Cr\ :sub:`00` - - Y'\ :sub:`00` - - Cb\ :sub:`00` - - Y'\ :sub:`01` - - Cr\ :sub:`01` - - Y'\ :sub:`02` - - Cb\ :sub:`01` - - Y'\ :sub:`03` - * - start + 8: - - Cr\ :sub:`10` - - Y'\ :sub:`10` - - Cb\ :sub:`10` - - Y'\ :sub:`11` - - Cr\ :sub:`11` - - Y'\ :sub:`12` - - Cb\ :sub:`11` - - Y'\ :sub:`13` - * - start + 16: - - Cr\ :sub:`20` - - Y'\ :sub:`20` - - Cb\ :sub:`20` - - Y'\ :sub:`21` - - Cr\ :sub:`21` - - Y'\ :sub:`22` - - Cb\ :sub:`21` - - Y'\ :sub:`23` - * - start + 24: - - Cr\ :sub:`30` - - Y'\ :sub:`30` - - Cb\ :sub:`30` - - Y'\ :sub:`31` - - Cr\ :sub:`31` - - Y'\ :sub:`32` - - Cb\ :sub:`31` - - Y'\ :sub:`33` - - -**Color Sample Location:** - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - - - 2 - - 3 - * - 0 - - Y - - C - - Y - - Y - - C - - Y - * - 1 - - Y - - C - - Y - - Y - - C - - Y - * - 2 - - Y - - C - - Y - - Y - - C - - Y - * - 3 - - Y - - C - - Y - - Y - - C - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y10.rst b/Documentation/userspace-api/media/v4l/pixfmt-y10.rst deleted file mode 100644 index 05f018dd883f..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-y10.rst +++ /dev/null @@ -1,65 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-Y10: - -************************* -V4L2_PIX_FMT_Y10 ('Y10 ') -************************* - - -Grey-scale image - - -Description -=========== - -This is a grey-scale image with a depth of 10 bits per pixel. Pixels are -stored in 16-bit words with unused high bits padded with 0. The least -significant byte is stored at lower memory addresses (little-endian). - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00low` - - Y'\ :sub:`00high` - - Y'\ :sub:`01low` - - Y'\ :sub:`01high` - - Y'\ :sub:`02low` - - Y'\ :sub:`02high` - - Y'\ :sub:`03low` - - Y'\ :sub:`03high` - * - start + 8: - - Y'\ :sub:`10low` - - Y'\ :sub:`10high` - - Y'\ :sub:`11low` - - Y'\ :sub:`11high` - - Y'\ :sub:`12low` - - Y'\ :sub:`12high` - - Y'\ :sub:`13low` - - Y'\ :sub:`13high` - * - start + 16: - - Y'\ :sub:`20low` - - Y'\ :sub:`20high` - - Y'\ :sub:`21low` - - Y'\ :sub:`21high` - - Y'\ :sub:`22low` - - Y'\ :sub:`22high` - - Y'\ :sub:`23low` - - Y'\ :sub:`23high` - * - start + 24: - - Y'\ :sub:`30low` - - Y'\ :sub:`30high` - - Y'\ :sub:`31low` - - Y'\ :sub:`31high` - - Y'\ :sub:`32low` - - Y'\ :sub:`32high` - - Y'\ :sub:`33low` - - Y'\ :sub:`33high` diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y10b.rst b/Documentation/userspace-api/media/v4l/pixfmt-y10b.rst deleted file mode 100644 index 38d353b37df9..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-y10b.rst +++ /dev/null @@ -1,33 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-Y10BPACK: - -****************************** -V4L2_PIX_FMT_Y10BPACK ('Y10B') -****************************** - -Grey-scale image as a bit-packed array - - -Description -=========== - -This is a packed grey-scale image format with a depth of 10 bits per -pixel. Pixels are stored in a bit-packed array of 10bit bits per pixel, -with no padding between them and with the most significant bits coming -first from the left. - -**Bit-packed representation.** - -pixels cross the byte boundary and have a ratio of 5 bytes for each 4 -pixels. - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - Y'\ :sub:`00[9:2]` - - Y'\ :sub:`00[1:0]`\ Y'\ :sub:`01[9:4]` - - Y'\ :sub:`01[3:0]`\ Y'\ :sub:`02[9:6]` - - Y'\ :sub:`02[5:0]`\ Y'\ :sub:`03[9:8]` - - Y'\ :sub:`03[7:0]` diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y10p.rst b/Documentation/userspace-api/media/v4l/pixfmt-y10p.rst deleted file mode 100644 index dd20d3438732..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-y10p.rst +++ /dev/null @@ -1,43 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-Y10P: - -****************************** -V4L2_PIX_FMT_Y10P ('Y10P') -****************************** - -Grey-scale image as a MIPI RAW10 packed array - - -Description -=========== - -This is a packed grey-scale image format with a depth of 10 bits per -pixel. Every four consecutive pixels are packed into 5 bytes. Each of -the first 4 bytes contain the 8 high order bits of the pixels, and -the 5th byte contains the 2 least significants bits of each pixel, -in the same order. - -**Bit-packed representation.** - -.. raw:: latex - - \small - -.. tabularcolumns:: |p{1.2cm}||p{1.2cm}||p{1.2cm}||p{1.2cm}|p{3.2cm}|p{3.2cm}| - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 8 8 8 8 64 - - * - Y'\ :sub:`00[9:2]` - - Y'\ :sub:`01[9:2]` - - Y'\ :sub:`02[9:2]` - - Y'\ :sub:`03[9:2]` - - Y'\ :sub:`03[1:0]`\ (bits 7--6) Y'\ :sub:`02[1:0]`\ (bits 5--4) - Y'\ :sub:`01[1:0]`\ (bits 3--2) Y'\ :sub:`00[1:0]`\ (bits 1--0) - -.. raw:: latex - - \normalsize diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y12.rst b/Documentation/userspace-api/media/v4l/pixfmt-y12.rst deleted file mode 100644 index 20e12a18da72..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-y12.rst +++ /dev/null @@ -1,65 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-Y12: - -************************* -V4L2_PIX_FMT_Y12 ('Y12 ') -************************* - - -Grey-scale image - - -Description -=========== - -This is a grey-scale image with a depth of 12 bits per pixel. Pixels are -stored in 16-bit words with unused high bits padded with 0. The least -significant byte is stored at lower memory addresses (little-endian). - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00low` - - Y'\ :sub:`00high` - - Y'\ :sub:`01low` - - Y'\ :sub:`01high` - - Y'\ :sub:`02low` - - Y'\ :sub:`02high` - - Y'\ :sub:`03low` - - Y'\ :sub:`03high` - * - start + 8: - - Y'\ :sub:`10low` - - Y'\ :sub:`10high` - - Y'\ :sub:`11low` - - Y'\ :sub:`11high` - - Y'\ :sub:`12low` - - Y'\ :sub:`12high` - - Y'\ :sub:`13low` - - Y'\ :sub:`13high` - * - start + 16: - - Y'\ :sub:`20low` - - Y'\ :sub:`20high` - - Y'\ :sub:`21low` - - Y'\ :sub:`21high` - - Y'\ :sub:`22low` - - Y'\ :sub:`22high` - - Y'\ :sub:`23low` - - Y'\ :sub:`23high` - * - start + 24: - - Y'\ :sub:`30low` - - Y'\ :sub:`30high` - - Y'\ :sub:`31low` - - Y'\ :sub:`31high` - - Y'\ :sub:`32low` - - Y'\ :sub:`32high` - - Y'\ :sub:`33low` - - Y'\ :sub:`33high` diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y14.rst b/Documentation/userspace-api/media/v4l/pixfmt-y14.rst deleted file mode 100644 index 2a4826b77105..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-y14.rst +++ /dev/null @@ -1,65 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-Y14: - -************************* -V4L2_PIX_FMT_Y14 ('Y14 ') -************************* - - -Grey-scale image - - -Description -=========== - -This is a grey-scale image with a depth of 14 bits per pixel. Pixels are -stored in 16-bit words with unused high bits padded with 0. The least -significant byte is stored at lower memory addresses (little-endian). - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00low` - - Y'\ :sub:`00high` - - Y'\ :sub:`01low` - - Y'\ :sub:`01high` - - Y'\ :sub:`02low` - - Y'\ :sub:`02high` - - Y'\ :sub:`03low` - - Y'\ :sub:`03high` - * - start + 8: - - Y'\ :sub:`10low` - - Y'\ :sub:`10high` - - Y'\ :sub:`11low` - - Y'\ :sub:`11high` - - Y'\ :sub:`12low` - - Y'\ :sub:`12high` - - Y'\ :sub:`13low` - - Y'\ :sub:`13high` - * - start + 16: - - Y'\ :sub:`20low` - - Y'\ :sub:`20high` - - Y'\ :sub:`21low` - - Y'\ :sub:`21high` - - Y'\ :sub:`22low` - - Y'\ :sub:`22high` - - Y'\ :sub:`23low` - - Y'\ :sub:`23high` - * - start + 24: - - Y'\ :sub:`30low` - - Y'\ :sub:`30high` - - Y'\ :sub:`31low` - - Y'\ :sub:`31high` - - Y'\ :sub:`32low` - - Y'\ :sub:`32high` - - Y'\ :sub:`33low` - - Y'\ :sub:`33high` diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y16-be.rst b/Documentation/userspace-api/media/v4l/pixfmt-y16-be.rst deleted file mode 100644 index 6d70cd78cbf6..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-y16-be.rst +++ /dev/null @@ -1,69 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-Y16-BE: - -**************************************** -V4L2_PIX_FMT_Y16_BE ('Y16 ' | (1 << 31)) -**************************************** - - -Grey-scale image - - -Description -=========== - -This is a grey-scale image with a depth of 16 bits per pixel. The most -significant byte is stored at lower memory addresses (big-endian). - -.. note:: - - The actual sampling precision may be lower than 16 bits, for - example 10 bits per pixel with values in range 0 to 1023. - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00high` - - Y'\ :sub:`00low` - - Y'\ :sub:`01high` - - Y'\ :sub:`01low` - - Y'\ :sub:`02high` - - Y'\ :sub:`02low` - - Y'\ :sub:`03high` - - Y'\ :sub:`03low` - * - start + 8: - - Y'\ :sub:`10high` - - Y'\ :sub:`10low` - - Y'\ :sub:`11high` - - Y'\ :sub:`11low` - - Y'\ :sub:`12high` - - Y'\ :sub:`12low` - - Y'\ :sub:`13high` - - Y'\ :sub:`13low` - * - start + 16: - - Y'\ :sub:`20high` - - Y'\ :sub:`20low` - - Y'\ :sub:`21high` - - Y'\ :sub:`21low` - - Y'\ :sub:`22high` - - Y'\ :sub:`22low` - - Y'\ :sub:`23high` - - Y'\ :sub:`23low` - * - start + 24: - - Y'\ :sub:`30high` - - Y'\ :sub:`30low` - - Y'\ :sub:`31high` - - Y'\ :sub:`31low` - - Y'\ :sub:`32high` - - Y'\ :sub:`32low` - - Y'\ :sub:`33high` - - Y'\ :sub:`33low` diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y16.rst b/Documentation/userspace-api/media/v4l/pixfmt-y16.rst deleted file mode 100644 index 398ad8ba5d64..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-y16.rst +++ /dev/null @@ -1,69 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-Y16: - -************************* -V4L2_PIX_FMT_Y16 ('Y16 ') -************************* - - -Grey-scale image - - -Description -=========== - -This is a grey-scale image with a depth of 16 bits per pixel. The least -significant byte is stored at lower memory addresses (little-endian). - -.. note:: - - The actual sampling precision may be lower than 16 bits, for - example 10 bits per pixel with values in range 0 to 1023. - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00low` - - Y'\ :sub:`00high` - - Y'\ :sub:`01low` - - Y'\ :sub:`01high` - - Y'\ :sub:`02low` - - Y'\ :sub:`02high` - - Y'\ :sub:`03low` - - Y'\ :sub:`03high` - * - start + 8: - - Y'\ :sub:`10low` - - Y'\ :sub:`10high` - - Y'\ :sub:`11low` - - Y'\ :sub:`11high` - - Y'\ :sub:`12low` - - Y'\ :sub:`12high` - - Y'\ :sub:`13low` - - Y'\ :sub:`13high` - * - start + 16: - - Y'\ :sub:`20low` - - Y'\ :sub:`20high` - - Y'\ :sub:`21low` - - Y'\ :sub:`21high` - - Y'\ :sub:`22low` - - Y'\ :sub:`22high` - - Y'\ :sub:`23low` - - Y'\ :sub:`23high` - * - start + 24: - - Y'\ :sub:`30low` - - Y'\ :sub:`30high` - - Y'\ :sub:`31low` - - Y'\ :sub:`31high` - - Y'\ :sub:`32low` - - Y'\ :sub:`32high` - - Y'\ :sub:`33low` - - Y'\ :sub:`33high` diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst b/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst deleted file mode 100644 index d14cedf8f317..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst +++ /dev/null @@ -1,151 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-Y41P: - -************************** -V4L2_PIX_FMT_Y41P ('Y41P') -************************** - - -Format with ¼ horizontal chroma resolution, also known as YUV 4:1:1 - - -Description -=========== - -In this format each 12 bytes is eight pixels. In the twelve bytes are -two CbCr pairs and eight Y's. The first CbCr pair goes with the first -four Y's, and the second CbCr pair goes with the other four Y's. The Cb -and Cr components have one fourth the horizontal resolution of the Y -component. - -Do not confuse this format with -:ref:`V4L2_PIX_FMT_YUV411P <V4L2-PIX-FMT-YUV411P>`. Y41P is derived -from "YUV 4:1:1 *packed*", while YUV411P stands for "YUV 4:1:1 -*planar*". - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Cb\ :sub:`00` - - Y'\ :sub:`00` - - Cr\ :sub:`00` - - Y'\ :sub:`01` - - Cb\ :sub:`01` - - Y'\ :sub:`02` - - Cr\ :sub:`01` - - Y'\ :sub:`03` - - Y'\ :sub:`04` - - Y'\ :sub:`05` - - Y'\ :sub:`06` - - Y'\ :sub:`07` - * - start + 12: - - Cb\ :sub:`10` - - Y'\ :sub:`10` - - Cr\ :sub:`10` - - Y'\ :sub:`11` - - Cb\ :sub:`11` - - Y'\ :sub:`12` - - Cr\ :sub:`11` - - Y'\ :sub:`13` - - Y'\ :sub:`14` - - Y'\ :sub:`15` - - Y'\ :sub:`16` - - Y'\ :sub:`17` - * - start + 24: - - Cb\ :sub:`20` - - Y'\ :sub:`20` - - Cr\ :sub:`20` - - Y'\ :sub:`21` - - Cb\ :sub:`21` - - Y'\ :sub:`22` - - Cr\ :sub:`21` - - Y'\ :sub:`23` - - Y'\ :sub:`24` - - Y'\ :sub:`25` - - Y'\ :sub:`26` - - Y'\ :sub:`27` - * - start + 36: - - Cb\ :sub:`30` - - Y'\ :sub:`30` - - Cr\ :sub:`30` - - Y'\ :sub:`31` - - Cb\ :sub:`31` - - Y'\ :sub:`32` - - Cr\ :sub:`31` - - Y'\ :sub:`33` - - Y'\ :sub:`34` - - Y'\ :sub:`35` - - Y'\ :sub:`36` - - Y'\ :sub:`37` - - -**Color Sample Location:** - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - 1 - - - - 2 - - 3 - - 4 - - 5 - - - - 6 - - 7 - * - 0 - - Y - - Y - - C - - Y - - Y - - Y - - Y - - C - - Y - - Y - * - 1 - - Y - - Y - - C - - Y - - Y - - Y - - Y - - C - - Y - - Y - * - 2 - - Y - - Y - - C - - Y - - Y - - Y - - Y - - C - - Y - - Y - * - 3 - - Y - - Y - - C - - Y - - Y - - Y - - Y - - C - - Y - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst new file mode 100644 index 000000000000..0c8c5e0a380e --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst @@ -0,0 +1,126 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later + +.. _yuv-luma-only: + +***************** +Luma-Only Formats +***************** + +This family of formats only store the luma component of a Y'CbCr image. They +are often referred to as greyscale formats. + +.. note:: + + - In all the tables that follow, bit 7 is the most significant bit in a byte. + - Formats are described with the minimum number of pixels needed to create a + byte-aligned repeating pattern. `...` indicates repetition of the pattern. + - Y'\ :sub:`x`\ [9:2] denotes bits 9 to 2 of the Y' value for pixel at colum + `x`. + - `0` denotes padding bits set to 0. + + +.. flat-table:: Luma-Only Image Formats + :header-rows: 1 + :stub-columns: 0 + + * - Identifier + - Code + - Byte 0 + - Byte 1 + - Byte 2 + - Byte 3 + - Byte 4 + + * .. _V4L2-PIX-FMT-GREY: + + - ``V4L2_PIX_FMT_GREY`` + - 'GREY' + + - Y'\ :sub:`0`\ [7:0] + - ... + - ... + - ... + - ... + + * .. _V4L2-PIX-FMT-Y10: + + - ``V4L2_PIX_FMT_Y10`` + - 'Y10 ' + + - Y'\ :sub:`0`\ [7:0] + - `000000` Y'\ :sub:`0`\ [9:8] + - ... + - ... + - ... + + * .. _V4L2-PIX-FMT-Y10BPACK: + + - ``V4L2_PIX_FMT_Y10BPACK`` + - 'Y10B' + + - Y'\ :sub:`0`\ [9:2] + - Y'\ :sub:`0`\ [1:0] Y'\ :sub:`1`\ [9:4] + - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`2`\ [9:6] + - Y'\ :sub:`2`\ [5:0] Y'\ :sub:`3`\ [9:8] + - Y'\ :sub:`3`\ [7:0] + + * .. _V4L2-PIX-FMT-Y10P: + + - ``V4L2_PIX_FMT_Y10P`` + - 'Y10P' + + - Y'\ :sub:`0`\ [7:0] + - Y'\ :sub:`1`\ [9:8] + - Y'\ :sub:`2`\ [9:2] + - Y'\ :sub:`3`\ [9:2] + - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [1:0] Y'\ :sub:`1`\ [1:0] Y'\ :sub:`0`\ [1:0] + + * .. _V4L2-PIX-FMT-Y12: + + - ``V4L2_PIX_FMT_Y12`` + - 'Y12 ' + + - Y'\ :sub:`0`\ [7:0] + - `0000` Y'\ :sub:`0`\ [11:8] + - ... + - ... + - ... + + * .. _V4L2-PIX-FMT-Y14: + + - ``V4L2_PIX_FMT_Y14`` + - 'Y14 ' + + - Y'\ :sub:`0`\ [7:0] + - `00` Y'\ :sub:`0`\ [13:8] + - ... + - ... + - ... + + * .. _V4L2-PIX-FMT-Y16: + + - ``V4L2_PIX_FMT_Y16`` + - 'Y16 ' + + - Y'\ :sub:`0`\ [7:0] + - Y'\ :sub:`0`\ [15:8] + - ... + - ... + - ... + + * .. _V4L2-PIX-FMT-Y16-BE: + + - ``V4L2_PIX_FMT_Y16_BE`` + - 'Y16 ' | (1U << 31) + + - Y'\ :sub:`0`\ [15:8] + - Y'\ :sub:`0`\ [7:0] + - ... + - ... + - ... + +.. note:: + + For the Y16 and Y16_BE formats, the actual sampling precision may be lower + than 16 bits. For example, 10 bits per pixel uses values in the range 0 to + 1023. diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst new file mode 100644 index 000000000000..7d4d39201a3f --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst @@ -0,0 +1,950 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later + +.. planar-yuv: + +****************** +Planar YUV formats +****************** + +Planar formats split luma and chroma data in separate memory regions. They +exist in two variants: + +- Semi-planar formats use two planes. The first plane is the luma plane and + stores the Y components. The second plane is the chroma plane and stores the + Cb and Cr components interleaved. + +- Fully planar formats use three planes to store the Y, Cb and Cr components + separately. + +Within a plane, components are stored in pixel order, which may be linear or +tiled. Padding may be supported at the end of the lines, and the line stride of +the chroma planes may be constrained by the line stride of the luma plane. + +Some planar formats allow planes to be placed in independent memory locations. +They are identified by an 'M' suffix in their name (such as in +``V4L2_PIX_FMT_NV12M``). Those formats are intended to be used only in drivers +and applications that support the multi-planar API, described in +:ref:`planar-apis`. Unless explicitly documented as supporting non-contiguous +planes, formats require the planes to follow each other immediately in memory. + + +Semi-Planar YUV Formats +======================= + +These formats are commonly referred to as NV formats (NV12, NV16, ...). They +use two planes, and store the luma components in the first plane and the chroma +components in the second plane. The Cb and Cr components are interleaved in the +chroma plane, with Cb and Cr always stored in pairs. The chroma order is +exposed as different formats. + +For memory contiguous formats, the number of padding pixels at the end of the +chroma lines is identical to the padding of the luma lines. Without horizontal +subsampling, the chroma line stride (in bytes) is thus equal to twice the luma +line stride. With horizontal subsampling by 2, the chroma line stride is equal +to the luma line stride. Vertical subsampling doesn't affect the line stride. + +For non-contiguous formats, no constraints are enforced by the format on the +relationship between the luma and chroma line padding and stride. + +All components are stored with the same number of bits per component. + +.. flat-table:: Overview of Semi-Planar YUV Formats + :header-rows: 1 + :stub-columns: 0 + + * - Identifier + - Code + - Bits per component + - Subsampling + - Chroma order [1]_ + - Contiguous [2]_ + - Tiling [3]_ + * - V4L2_PIX_FMT_NV12 + - 'NV12' + - 8 + - 4:2:0 + - Cb, Cr + - Yes + - Linear + * - V4L2_PIX_FMT_NV21 + - 'NV21' + - 8 + - 4:2:0 + - Cr, Cr + - Yes + - Linear + * - V4L2_PIX_FMT_NV12M + - 'NM12' + - 8 + - 4:2:0 + - Cb, Cr + - No + - Linear + * - V4L2_PIX_FMT_NV21M + - 'NM21' + - 8 + - 4:2:0 + - Cr, Cr + - No + - Linear + * - V4L2_PIX_FMT_NV12MT + - 'TM12' + - 8 + - 4:2:0 + - Cb, Cr + - No + - 64x32 macroblocks + + Horizontal Z order + * - V4L2_PIX_FMT_NV12MT_16X16 + - 'VM12' + - 8 + - 4:2:2 + - Cb, Cr + - No + - 16x16 macroblocks + * - V4L2_PIX_FMT_NV16 + - 'NV16' + - 8 + - 4:2:2 + - Cb, Cr + - Yes + - Linear + * - V4L2_PIX_FMT_NV61 + - 'NV61' + - 8 + - 4:2:2 + - Cr, Cr + - Yes + - Linear + * - V4L2_PIX_FMT_NV16M + - 'NM16' + - 8 + - 4:2:2 + - Cb, Cr + - No + - Linear + * - V4L2_PIX_FMT_NV61M + - 'NM61' + - 8 + - 4:2:2 + - Cr, Cr + - No + - Linear + * - V4L2_PIX_FMT_NV24 + - 'NV24' + - 8 + - 4:4:4 + - Cb, Cr + - Yes + - Linear + * - V4L2_PIX_FMT_NV42 + - 'NV42' + - 8 + - 4:4:4 + - Cr, Cr + - Yes + - Linear + +.. note:: + + .. [1] Order of chroma samples in the second plane + .. [2] Indicates if planes have to be contiguous in memory or can be + disjoint + .. [3] Macroblock size in pixels + + +**Color Sample Location:** +Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>` +horizontally. + + +.. _V4L2-PIX-FMT-NV12: +.. _V4L2-PIX-FMT-NV21: +.. _V4L2-PIX-FMT-NV12M: +.. _V4L2-PIX-FMT-NV21M: + +NV12, NV21, NV12M and NV21M +--------------------------- + +Semi-planar YUV 4:2:0 formats. The chroma plane is subsampled by 2 in each +direction. Chroma lines contain half the number of pixels and the same number +of bytes as luma lines, and the chroma plane contains half the number of lines +of the luma plane. + +.. flat-table:: Sample 4x4 NV12 Image + :header-rows: 0 + :stub-columns: 0 + + * - start + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - start + 16: + - Cb\ :sub:`00` + - Cr\ :sub:`00` + - Cb\ :sub:`01` + - Cr\ :sub:`01` + * - start + 20: + - Cb\ :sub:`10` + - Cr\ :sub:`10` + - Cb\ :sub:`11` + - Cr\ :sub:`11` + +.. flat-table:: Sample 4x4 NV12M Image + :header-rows: 0 + :stub-columns: 0 + + * - start0 + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start0 + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start0 + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start0 + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - + * - start1 + 0: + - Cb\ :sub:`00` + - Cr\ :sub:`00` + - Cb\ :sub:`01` + - Cr\ :sub:`01` + * - start1 + 4: + - Cb\ :sub:`10` + - Cr\ :sub:`10` + - Cb\ :sub:`11` + - Cr\ :sub:`11` + + +.. _V4L2-PIX-FMT-NV12MT: +.. _V4L2-PIX-FMT-NV12MT-16X16: + +NV12MT and MV12MT_16X16 +----------------------- + +Semi-planar YUV 4:2:0 formats, using macroblock tiling. The chroma plane is +subsampled by 2 in each direction. Chroma lines contain half the number of +pixels and the same number of bytes as luma lines, and the chroma plane +contains half the number of lines of the luma plane. + +``V4L2_PIX_FMT_NV12MT_16X16`` stores pixel in 2D 16x16 macroblocks, and stores +macroblocks linearly in memory. The line stride and image height must be +aligned to a multiple of 16. The layouts of the luma and chroma planes are +identical. + +``V4L2_PIX_FMT_NV12MT`` stores pixels in 2D 64x32 macroblocks, and stores 2x2 +groups of macroblocks in Z-order in memory, alternating Z and mirrored Z shapes +horizontally. The line stride must be a multiple of 128 pixels to ensure an +integer number of Z shapes. The image height must be a multiple of 32 pixels. +If the vertical resolution is an odd number of macroblocks, the last row of +macroblocks is stored in linear order. The layouts of the luma and chroma +planes are identical. + +.. _nv12mt: + +.. kernel-figure:: nv12mt.svg + :alt: nv12mt.svg + :align: center + + V4L2_PIX_FMT_NV12MT macroblock Z shape memory layout + +.. _nv12mt_ex: + +.. kernel-figure:: nv12mt_example.svg + :alt: nv12mt_example.svg + :align: center + + Example V4L2_PIX_FMT_NV12MT memory layout of macroblocks + + +.. _V4L2-PIX-FMT-NV16: +.. _V4L2-PIX-FMT-NV61: +.. _V4L2-PIX-FMT-NV16M: +.. _V4L2-PIX-FMT-NV61M: + +NV16, NV61, NV16M and NV61M +--------------------------- + +Semi-planar YUV 4:2:2 formats. The chroma plane is subsampled by 2 in the +horizontal direction. Chroma lines contain half the number of pixels and the +same number of bytes as luma lines, and the chroma plane contains the same +number of lines as the luma plane. + +.. flat-table:: Sample 4x4 NV16 Image + :header-rows: 0 + :stub-columns: 0 + + * - start + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - start + 16: + - Cb\ :sub:`00` + - Cr\ :sub:`00` + - Cb\ :sub:`01` + - Cr\ :sub:`01` + * - start + 20: + - Cb\ :sub:`10` + - Cr\ :sub:`10` + - Cb\ :sub:`11` + - Cr\ :sub:`11` + * - start + 24: + - Cb\ :sub:`20` + - Cr\ :sub:`20` + - Cb\ :sub:`21` + - Cr\ :sub:`21` + * - start + 28: + - Cb\ :sub:`30` + - Cr\ :sub:`30` + - Cb\ :sub:`31` + - Cr\ :sub:`31` + +.. flat-table:: Sample 4x4 NV16M Image + :header-rows: 0 + :stub-columns: 0 + + * - start0 + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start0 + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start0 + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start0 + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - + * - start1 + 0: + - Cb\ :sub:`00` + - Cr\ :sub:`00` + - Cb\ :sub:`02` + - Cr\ :sub:`02` + * - start1 + 4: + - Cb\ :sub:`10` + - Cr\ :sub:`10` + - Cb\ :sub:`12` + - Cr\ :sub:`12` + * - start1 + 8: + - Cb\ :sub:`20` + - Cr\ :sub:`20` + - Cb\ :sub:`22` + - Cr\ :sub:`22` + * - start1 + 12: + - Cb\ :sub:`30` + - Cr\ :sub:`30` + - Cb\ :sub:`32` + - Cr\ :sub:`32` + + +.. _V4L2-PIX-FMT-NV24: +.. _V4L2-PIX-FMT-NV42: + +NV24 and NV42 +------------- + +Semi-planar YUV 4:4:4 formats. The chroma plane is subsampled by 2 in the +horizontal direction. Chroma lines contain half the number of pixels and the +same number of bytes as luma lines, and the chroma plane contains the same +number of lines as the luma plane. + +.. flat-table:: Sample 4x4 NV24 Image + :header-rows: 0 + :stub-columns: 0 + + * - start + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - start + 16: + - Cb\ :sub:`00` + - Cr\ :sub:`00` + - Cb\ :sub:`01` + - Cr\ :sub:`01` + - Cb\ :sub:`02` + - Cr\ :sub:`02` + - Cb\ :sub:`03` + - Cr\ :sub:`03` + * - start + 24: + - Cb\ :sub:`10` + - Cr\ :sub:`10` + - Cb\ :sub:`11` + - Cr\ :sub:`11` + - Cb\ :sub:`12` + - Cr\ :sub:`12` + - Cb\ :sub:`13` + - Cr\ :sub:`13` + * - start + 32: + - Cb\ :sub:`20` + - Cr\ :sub:`20` + - Cb\ :sub:`21` + - Cr\ :sub:`21` + - Cb\ :sub:`22` + - Cr\ :sub:`22` + - Cb\ :sub:`23` + - Cr\ :sub:`23` + * - start + 40: + - Cb\ :sub:`30` + - Cr\ :sub:`30` + - Cb\ :sub:`31` + - Cr\ :sub:`31` + - Cb\ :sub:`32` + - Cr\ :sub:`32` + - Cb\ :sub:`33` + - Cr\ :sub:`33` + + +Fully Planar YUV Formats +======================== + +These formats store the Y, Cb and Cr components in three separate planes. The +luma plane comes first, and the order of the two chroma planes varies between +formats. The two chroma planes always use the same subsampling. + +For memory contiguous formats, the number of padding pixels at the end of the +chroma lines is identical to the padding of the luma lines. The chroma line +stride (in bytes) is thus equal to the luma line stride divided by the +horizontal subsampling factor. Vertical subsampling doesn't affect the line +stride. + +For non-contiguous formats, no constraints are enforced by the format on the +relationship between the luma and chroma line padding and stride. + +All components are stored with the same number of bits per component. + +.. flat-table:: Overview of Fully Planar YUV Formats + :header-rows: 1 + :stub-columns: 0 + + * - Identifier + - Code + - Bits per component + - Subsampling + - Planes order [4]_ + - Contiguous [5]_ + + * - V4L2_PIX_FMT_YUV410 + - 'YUV9' + - 8 + - 4:1:0 + - Y, Cb, Cr + - Yes + * - V4L2_PIX_FMT_YVU410 + - 'YVU9' + - 8 + - 4:1:0 + - Y, Cr, Cb + - Yes + * - V4L2_PIX_FMT_YUV411P + - '411P' + - 8 + - 4:1:1 + - Y, Cb, Cr + - Yes + * - V4L2_PIX_FMT_YUV420M + - 'YM12' + - 8 + - 4:2:0 + - Y, Cb, Cr + - No + * - V4L2_PIX_FMT_YVU420M + - 'YM21' + - 8 + - 4:2:0 + - Y, Cr, Cb + - No + * - V4L2_PIX_FMT_YUV420 + - 'YU12' + - 8 + - 4:2:0 + - Y, Cb, Cr + - Yes + * - V4L2_PIX_FMT_YVU420 + - 'YV12' + - 8 + - 4:2:0 + - Y, Cr, Cb + - Yes + * - V4L2_PIX_FMT_YUV422P + - '422P' + - 8 + - 4:2:2 + - Y, Cb, Cr + - Yes + * - V4L2_PIX_FMT_YUV422M + - 'YM16' + - 8 + - 4:2:2 + - Y, Cb, Cr + - No + * - V4L2_PIX_FMT_YVU422M + - 'YM61' + - 8 + - 4:2:2 + - Y, Cr, Cb + - No + * - V4L2_PIX_FMT_YUV444M + - 'YM24' + - 8 + - 4:4:4 + - Y, Cb, Cr + - No + * - V4L2_PIX_FMT_YVU444M + - 'YM42' + - 8 + - 4:4:4 + - Y, Cr, Cb + - No + +.. note:: + + .. [4] Order of luma and chroma planes + .. [5] Indicates if planes have to be contiguous in memory or can be + disjoint + + +**Color Sample Location:** +Chroma samples are :ref:`interstitially sited<yuv-chroma-centered>` +horizontally. + +.. _V4L2-PIX-FMT-YUV410: +.. _V4L2-PIX-FMT-YVU410: + +YUV410 and YVU410 +----------------- + +Planar YUV 4:1:0 formats. The chroma planes are subsampled by 4 in each +direction. Chroma lines contain a quarter of the number of pixels and bytes of +the luma lines, and the chroma planes contain a quarter of the number of lines +of the luma plane. + +.. flat-table:: Sample 4x4 YUV410 Image + :header-rows: 0 + :stub-columns: 0 + + * - start + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - start + 16: + - Cr\ :sub:`00` + * - start + 17: + - Cb\ :sub:`00` + + +.. _V4L2-PIX-FMT-YUV411P: + +YUV411P +------- + +Planar YUV 4:1:1 formats. The chroma planes are subsampled by 4 in the +horizontal direction. Chroma lines contain a quarter of the number of pixels +and bytes of the luma lines, and the chroma planes contain the same number of +lines as the luma plane. + +.. flat-table:: Sample 4x4 YUV411P Image + :header-rows: 0 + :stub-columns: 0 + + * - start + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - start + 16: + - Cb\ :sub:`00` + * - start + 17: + - Cb\ :sub:`10` + * - start + 18: + - Cb\ :sub:`20` + * - start + 19: + - Cb\ :sub:`30` + * - start + 20: + - Cr\ :sub:`00` + * - start + 21: + - Cr\ :sub:`10` + * - start + 22: + - Cr\ :sub:`20` + * - start + 23: + - Cr\ :sub:`30` + + +.. _V4L2-PIX-FMT-YUV420: +.. _V4L2-PIX-FMT-YVU420: +.. _V4L2-PIX-FMT-YUV420M: +.. _V4L2-PIX-FMT-YVU420M: + +YUV420, YVU420, YUV420M and YVU420M +----------------------------------- + +Planar YUV 4:2:0 formats. The chroma planes are subsampled by 2 in each +direction. Chroma lines contain half of the number of pixels and bytes of the +luma lines, and the chroma planes contain half of the number of lines of the +luma plane. + +.. flat-table:: Sample 4x4 YUV420 Image + :header-rows: 0 + :stub-columns: 0 + + * - start + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - start + 16: + - Cr\ :sub:`00` + - Cr\ :sub:`01` + * - start + 18: + - Cr\ :sub:`10` + - Cr\ :sub:`11` + * - start + 20: + - Cb\ :sub:`00` + - Cb\ :sub:`01` + * - start + 22: + - Cb\ :sub:`10` + - Cb\ :sub:`11` + +.. flat-table:: Sample 4x4 YUV420M Image + :header-rows: 0 + :stub-columns: 0 + + * - start0 + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start0 + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start0 + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start0 + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - + * - start1 + 0: + - Cb\ :sub:`00` + - Cb\ :sub:`01` + * - start1 + 2: + - Cb\ :sub:`10` + - Cb\ :sub:`11` + * - + * - start2 + 0: + - Cr\ :sub:`00` + - Cr\ :sub:`01` + * - start2 + 2: + - Cr\ :sub:`10` + - Cr\ :sub:`11` + + +.. _V4L2-PIX-FMT-YUV422P: +.. _V4L2-PIX-FMT-YUV422M: +.. _V4L2-PIX-FMT-YVU422M: + +YUV422P, YUV422M and YVU422M +---------------------------- + +Planar YUV 4:2:2 formats. The chroma planes are subsampled by 2 in the +horizontal direction. Chroma lines contain half of the number of pixels and +bytes of the luma lines, and the chroma planes contain the same number of lines +as the luma plane. + +.. flat-table:: Sample 4x4 YUV422P Image + :header-rows: 0 + :stub-columns: 0 + + * - start + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - start + 16: + - Cb\ :sub:`00` + - Cb\ :sub:`01` + * - start + 18: + - Cb\ :sub:`10` + - Cb\ :sub:`11` + * - start + 20: + - Cb\ :sub:`20` + - Cb\ :sub:`21` + * - start + 22: + - Cb\ :sub:`30` + - Cb\ :sub:`31` + * - start + 24: + - Cr\ :sub:`00` + - Cr\ :sub:`01` + * - start + 26: + - Cr\ :sub:`10` + - Cr\ :sub:`11` + * - start + 28: + - Cr\ :sub:`20` + - Cr\ :sub:`21` + * - start + 30: + - Cr\ :sub:`30` + - Cr\ :sub:`31` + +.. flat-table:: Sample 4x4 YUV422M Image + :header-rows: 0 + :stub-columns: 0 + + * - start0 + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start0 + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start0 + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start0 + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - + * - start1 + 0: + - Cb\ :sub:`00` + - Cb\ :sub:`01` + * - start1 + 2: + - Cb\ :sub:`10` + - Cb\ :sub:`11` + * - start1 + 4: + - Cb\ :sub:`20` + - Cb\ :sub:`21` + * - start1 + 6: + - Cb\ :sub:`30` + - Cb\ :sub:`31` + * - + * - start2 + 0: + - Cr\ :sub:`00` + - Cr\ :sub:`01` + * - start2 + 2: + - Cr\ :sub:`10` + - Cr\ :sub:`11` + * - start2 + 4: + - Cr\ :sub:`20` + - Cr\ :sub:`21` + * - start2 + 6: + - Cr\ :sub:`30` + - Cr\ :sub:`31` + + +.. _V4L2-PIX-FMT-YUV444M: +.. _V4L2-PIX-FMT-YVU444M: + +YUV444M and YVU444M +------------------- + +Planar YUV 4:4:4 formats. The chroma planes are no subsampled. Chroma lines +contain the same number of pixels and bytes of the luma lines, and the chroma +planes contain the same number of lines as the luma plane. + +.. flat-table:: Sample 4x4 YUV444M Image + :header-rows: 0 + :stub-columns: 0 + + * - start0 + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start0 + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start0 + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start0 + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - + * - start1 + 0: + - Cb\ :sub:`00` + - Cb\ :sub:`01` + - Cb\ :sub:`02` + - Cb\ :sub:`03` + * - start1 + 4: + - Cb\ :sub:`10` + - Cb\ :sub:`11` + - Cb\ :sub:`12` + - Cb\ :sub:`13` + * - start1 + 8: + - Cb\ :sub:`20` + - Cb\ :sub:`21` + - Cb\ :sub:`22` + - Cb\ :sub:`23` + * - start1 + 12: + - Cb\ :sub:`20` + - Cb\ :sub:`21` + - Cb\ :sub:`32` + - Cb\ :sub:`33` + * - + * - start2 + 0: + - Cr\ :sub:`00` + - Cr\ :sub:`01` + - Cr\ :sub:`02` + - Cr\ :sub:`03` + * - start2 + 4: + - Cr\ :sub:`10` + - Cr\ :sub:`11` + - Cr\ :sub:`12` + - Cr\ :sub:`13` + * - start2 + 8: + - Cr\ :sub:`20` + - Cr\ :sub:`21` + - Cr\ :sub:`22` + - Cr\ :sub:`23` + * - start2 + 12: + - Cr\ :sub:`30` + - Cr\ :sub:`31` + - Cr\ :sub:`32` + - Cr\ :sub:`33` diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst deleted file mode 100644 index de2e519adc60..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst +++ /dev/null @@ -1,127 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-YVU410: -.. _v4l2-pix-fmt-yuv410: - -********************************************************** -V4L2_PIX_FMT_YVU410 ('YVU9'), V4L2_PIX_FMT_YUV410 ('YUV9') -********************************************************** - - -V4L2_PIX_FMT_YUV410 -Planar formats with ¼ horizontal and vertical chroma resolution, also -known as YUV 4:1:0 - - -Description -=========== - -These are planar formats, as opposed to a packed format. The three -components are separated into three sub-images or planes. The Y plane is -first. The Y plane has one byte per pixel. For ``V4L2_PIX_FMT_YVU410``, -the Cr plane immediately follows the Y plane in memory. The Cr plane is -¼ the width and ¼ the height of the Y plane (and of the image). Each Cr -belongs to 16 pixels, a four-by-four square of the image. Following the -Cr plane is the Cb plane, just like the Cr plane. -``V4L2_PIX_FMT_YUV410`` is the same, except the Cb plane comes first, -then the Cr plane. - -If the Y plane has pad bytes after each row, then the Cr and Cb planes -have ¼ as many pad bytes after their rows. In other words, four Cx rows -(including padding) are exactly as long as one Y row (including -padding). - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - start + 16: - - Cr\ :sub:`00` - * - start + 17: - - Cb\ :sub:`00` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - - - 2 - - - - 3 - * - 0 - - Y - - - - Y - - - - Y - - - - Y - * - - * - 1 - - Y - - - - Y - - - - Y - - - - Y - * - - - - - - - - - C - - - - - - - * - 2 - - Y - - - - Y - - - - Y - - - - Y - * - - * - 3 - - Y - - - - Y - - - - Y - - - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv411p.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv411p.rst deleted file mode 100644 index 998aa9b1328f..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv411p.rst +++ /dev/null @@ -1,115 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-YUV411P: - -***************************** -V4L2_PIX_FMT_YUV411P ('411P') -***************************** - - -Format with ¼ horizontal chroma resolution, also known as YUV 4:1:1. -Planar layout as opposed to ``V4L2_PIX_FMT_Y41P`` - - -Description -=========== - -This format is not commonly used. This is a planar format similar to the -4:2:2 planar format except with half as many chroma. The three -components are separated into three sub-images or planes. The Y plane is -first. The Y plane has one byte per pixel. The Cb plane immediately -follows the Y plane in memory. The Cb plane is ¼ the width of the Y -plane (and of the image). Each Cb belongs to 4 pixels all on the same -row. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`, -Y'\ :sub:`02` and Y'\ :sub:`03`. Following the Cb plane is the Cr plane, -just like the Cb plane. - -If the Y plane has pad bytes after each row, then the Cr and Cb planes -have ¼ as many pad bytes after their rows. In other words, four C x rows -(including padding) is exactly as long as one Y row (including padding). - -**Byte Order.** -Each cell is one byte. - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - start + 16: - - Cb\ :sub:`00` - * - start + 17: - - Cb\ :sub:`10` - * - start + 18: - - Cb\ :sub:`20` - * - start + 19: - - Cb\ :sub:`30` - * - start + 20: - - Cr\ :sub:`00` - * - start + 21: - - Cr\ :sub:`10` - * - start + 22: - - Cr\ :sub:`20` - * - start + 23: - - Cr\ :sub:`30` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - 1 - - - - 2 - - 3 - * - 0 - - Y - - Y - - C - - Y - - Y - * - 1 - - Y - - Y - - C - - Y - - Y - * - 2 - - Y - - Y - - C - - Y - - Y - * - 3 - - Y - - Y - - C - - Y - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv420.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv420.rst deleted file mode 100644 index f1c7baf32685..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv420.rst +++ /dev/null @@ -1,143 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-YVU420: -.. _V4L2-PIX-FMT-YUV420: - -********************************************************** -V4L2_PIX_FMT_YVU420 ('YV12'), V4L2_PIX_FMT_YUV420 ('YU12') -********************************************************** - - -V4L2_PIX_FMT_YUV420 -Planar formats with ½ horizontal and vertical chroma resolution, also -known as YUV 4:2:0 - - -Description -=========== - -These are planar formats, as opposed to a packed format. The three -components are separated into three sub- images or planes. The Y plane -is first. The Y plane has one byte per pixel. For -``V4L2_PIX_FMT_YVU420``, the Cr plane immediately follows the Y plane in -memory. The Cr plane is half the width and half the height of the Y -plane (and of the image). Each Cr belongs to four pixels, a two-by-two -square of the image. For example, Cr\ :sub:`0` belongs to Y'\ :sub:`00`, -Y'\ :sub:`01`, Y'\ :sub:`10`, and Y'\ :sub:`11`. Following the Cr plane -is the Cb plane, just like the Cr plane. ``V4L2_PIX_FMT_YUV420`` is the -same except the Cb plane comes first, then the Cr plane. - -If the Y plane has pad bytes after each row, then the Cr and Cb planes -have half as many pad bytes after their rows. In other words, two Cx -rows (including padding) is exactly as long as one Y row (including -padding). - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - start + 16: - - Cr\ :sub:`00` - - Cr\ :sub:`01` - * - start + 18: - - Cr\ :sub:`10` - - Cr\ :sub:`11` - * - start + 20: - - Cb\ :sub:`00` - - Cb\ :sub:`01` - * - start + 22: - - Cb\ :sub:`10` - - Cb\ :sub:`11` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - - - 2 - - - - 3 - * - 0 - - Y - - - - Y - - - - Y - - - - Y - * - - - - - C - - - - - - - - C - - - * - 1 - - Y - - - - Y - - - - Y - - - - Y - * - - * - 2 - - Y - - - - Y - - - - Y - - - - Y - * - - - - - C - - - - - - - - C - - - * - 3 - - Y - - - - Y - - - - Y - - - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv420m.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv420m.rst deleted file mode 100644 index cd20a57e0621..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv420m.rst +++ /dev/null @@ -1,152 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-YUV420M: -.. _v4l2-pix-fmt-yvu420m: - -************************************************************ -V4L2_PIX_FMT_YUV420M ('YM12'), V4L2_PIX_FMT_YVU420M ('YM21') -************************************************************ - - -V4L2_PIX_FMT_YVU420M -Variation of ``V4L2_PIX_FMT_YUV420`` and ``V4L2_PIX_FMT_YVU420`` with -planes non contiguous in memory. - - -Description -=========== - -This is a multi-planar format, as opposed to a packed format. The three -components are separated into three sub-images or planes. - -The Y plane is first. The Y plane has one byte per pixel. For -``V4L2_PIX_FMT_YUV420M`` the Cb data constitutes the second plane which -is half the width and half the height of the Y plane (and of the image). -Each Cb belongs to four pixels, a two-by-two square of the image. For -example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`, -Y'\ :sub:`10`, and Y'\ :sub:`11`. The Cr data, just like the Cb plane, -is in the third plane. - -``V4L2_PIX_FMT_YVU420M`` is the same except the Cr data is stored in the -second plane and the Cb data in the third plane. - -If the Y plane has pad bytes after each row, then the Cb and Cr planes -have half as many pad bytes after their rows. In other words, two Cx -rows (including padding) is exactly as long as one Y row (including -padding). - -``V4L2_PIX_FMT_YUV420M`` and ``V4L2_PIX_FMT_YVU420M`` are intended to be -used only in drivers and applications that support the multi-planar API, -described in :ref:`planar-apis`. - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start0 + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start0 + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start0 + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start0 + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - - * - start1 + 0: - - Cb\ :sub:`00` - - Cb\ :sub:`01` - * - start1 + 2: - - Cb\ :sub:`10` - - Cb\ :sub:`11` - * - - * - start2 + 0: - - Cr\ :sub:`00` - - Cr\ :sub:`01` - * - start2 + 2: - - Cr\ :sub:`10` - - Cr\ :sub:`11` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - - - 2 - - - - 3 - * - 0 - - Y - - - - Y - - - - Y - - - - Y - * - - - - - C - - - - - - - - C - - - * - 1 - - Y - - - - Y - - - - Y - - - - Y - * - - * - 2 - - Y - - - - Y - - - - Y - - - - Y - * - - - - - C - - - - - - - - C - - - * - 3 - - Y - - - - Y - - - - Y - - - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv422m.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv422m.rst deleted file mode 100644 index 32bf15e1426e..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv422m.rst +++ /dev/null @@ -1,141 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-YUV422M: -.. _v4l2-pix-fmt-yvu422m: - -************************************************************ -V4L2_PIX_FMT_YUV422M ('YM16'), V4L2_PIX_FMT_YVU422M ('YM61') -************************************************************ - - -V4L2_PIX_FMT_YVU422M -Planar formats with ½ horizontal resolution, also known as YUV and YVU -4:2:2 - - -Description -=========== - -This is a multi-planar format, as opposed to a packed format. The three -components are separated into three sub-images or planes. - -The Y plane is first. The Y plane has one byte per pixel. For -``V4L2_PIX_FMT_YUV422M`` the Cb data constitutes the second plane which -is half the width of the Y plane (and of the image). Each Cb belongs to -two pixels. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, -Y'\ :sub:`01`. The Cr data, just like the Cb plane, is in the third -plane. - -``V4L2_PIX_FMT_YVU422M`` is the same except the Cr data is stored in the -second plane and the Cb data in the third plane. - -If the Y plane has pad bytes after each row, then the Cb and Cr planes -have half as many pad bytes after their rows. In other words, two Cx -rows (including padding) is exactly as long as one Y row (including -padding). - -``V4L2_PIX_FMT_YUV422M`` and ``V4L2_PIX_FMT_YVU422M`` are intended to be -used only in drivers and applications that support the multi-planar API, -described in :ref:`planar-apis`. - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start0 + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start0 + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start0 + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start0 + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - - * - start1 + 0: - - Cb\ :sub:`00` - - Cb\ :sub:`01` - * - start1 + 2: - - Cb\ :sub:`10` - - Cb\ :sub:`11` - * - start1 + 4: - - Cb\ :sub:`20` - - Cb\ :sub:`21` - * - start1 + 6: - - Cb\ :sub:`30` - - Cb\ :sub:`31` - * - - * - start2 + 0: - - Cr\ :sub:`00` - - Cr\ :sub:`01` - * - start2 + 2: - - Cr\ :sub:`10` - - Cr\ :sub:`11` - * - start2 + 4: - - Cr\ :sub:`20` - - Cr\ :sub:`21` - * - start2 + 6: - - Cr\ :sub:`30` - - Cr\ :sub:`31` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - 2 - - - - 3 - * - 0 - - Y - - C - - Y - - Y - - C - - Y - * - 1 - - Y - - C - - Y - - Y - - C - - Y - * - 2 - - Y - - C - - Y - - Y - - C - - Y - * - 3 - - Y - - C - - Y - - Y - - C - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv422p.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv422p.rst deleted file mode 100644 index b178be558361..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv422p.rst +++ /dev/null @@ -1,129 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-YUV422P: - -***************************** -V4L2_PIX_FMT_YUV422P ('422P') -***************************** - - -Format with ½ horizontal chroma resolution, also known as YUV 4:2:2. -Planar layout as opposed to ``V4L2_PIX_FMT_YUYV`` - - -Description -=========== - -This format is not commonly used. This is a planar version of the YUYV -format. The three components are separated into three sub-images or -planes. The Y plane is first. The Y plane has one byte per pixel. The Cb -plane immediately follows the Y plane in memory. The Cb plane is half -the width of the Y plane (and of the image). Each Cb belongs to two -pixels. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, -Y'\ :sub:`01`. Following the Cb plane is the Cr plane, just like the Cb -plane. - -If the Y plane has pad bytes after each row, then the Cr and Cb planes -have half as many pad bytes after their rows. In other words, two Cx -rows (including padding) is exactly as long as one Y row (including -padding). - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - start + 16: - - Cb\ :sub:`00` - - Cb\ :sub:`01` - * - start + 18: - - Cb\ :sub:`10` - - Cb\ :sub:`11` - * - start + 20: - - Cb\ :sub:`20` - - Cb\ :sub:`21` - * - start + 22: - - Cb\ :sub:`30` - - Cb\ :sub:`31` - * - start + 24: - - Cr\ :sub:`00` - - Cr\ :sub:`01` - * - start + 26: - - Cr\ :sub:`10` - - Cr\ :sub:`11` - * - start + 28: - - Cr\ :sub:`20` - - Cr\ :sub:`21` - * - start + 30: - - Cr\ :sub:`30` - - Cr\ :sub:`31` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - 2 - - - - 3 - * - 0 - - Y - - C - - Y - - Y - - C - - Y - * - 1 - - Y - - C - - Y - - Y - - C - - Y - * - 2 - - Y - - C - - Y - - Y - - C - - Y - * - 3 - - Y - - C - - Y - - Y - - C - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst deleted file mode 100644 index 90bdee2e2b0d..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst +++ /dev/null @@ -1,141 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-YUV444M: -.. _v4l2-pix-fmt-yvu444m: - -************************************************************ -V4L2_PIX_FMT_YUV444M ('YM24'), V4L2_PIX_FMT_YVU444M ('YM42') -************************************************************ - - -V4L2_PIX_FMT_YVU444M -Planar formats with full horizontal resolution, also known as YUV and -YVU 4:4:4 - - -Description -=========== - -This is a multi-planar format, as opposed to a packed format. The three -components are separated into three sub-images or planes. - -The Y plane is first. The Y plane has one byte per pixel. For -``V4L2_PIX_FMT_YUV444M`` the Cb data constitutes the second plane which -is the same width and height as the Y plane (and as the image). The Cr -data, just like the Cb plane, is in the third plane. - -``V4L2_PIX_FMT_YVU444M`` is the same except the Cr data is stored in the -second plane and the Cb data in the third plane. - -If the Y plane has pad bytes after each row, then the Cb and Cr planes -have the same number of pad bytes after their rows. - -``V4L2_PIX_FMT_YUV444M`` and ``V4L2_PIX_FMT_YUV444M`` are intended to be -used only in drivers and applications that support the multi-planar API, -described in :ref:`planar-apis`. - -**Byte Order.** -Each cell is one byte. - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start0 + 0: - - Y'\ :sub:`00` - - Y'\ :sub:`01` - - Y'\ :sub:`02` - - Y'\ :sub:`03` - * - start0 + 4: - - Y'\ :sub:`10` - - Y'\ :sub:`11` - - Y'\ :sub:`12` - - Y'\ :sub:`13` - * - start0 + 8: - - Y'\ :sub:`20` - - Y'\ :sub:`21` - - Y'\ :sub:`22` - - Y'\ :sub:`23` - * - start0 + 12: - - Y'\ :sub:`30` - - Y'\ :sub:`31` - - Y'\ :sub:`32` - - Y'\ :sub:`33` - * - - * - start1 + 0: - - Cb\ :sub:`00` - - Cb\ :sub:`01` - - Cb\ :sub:`02` - - Cb\ :sub:`03` - * - start1 + 4: - - Cb\ :sub:`10` - - Cb\ :sub:`11` - - Cb\ :sub:`12` - - Cb\ :sub:`13` - * - start1 + 8: - - Cb\ :sub:`20` - - Cb\ :sub:`21` - - Cb\ :sub:`22` - - Cb\ :sub:`23` - * - start1 + 12: - - Cb\ :sub:`20` - - Cb\ :sub:`21` - - Cb\ :sub:`32` - - Cb\ :sub:`33` - * - - * - start2 + 0: - - Cr\ :sub:`00` - - Cr\ :sub:`01` - - Cr\ :sub:`02` - - Cr\ :sub:`03` - * - start2 + 4: - - Cr\ :sub:`10` - - Cr\ :sub:`11` - - Cr\ :sub:`12` - - Cr\ :sub:`13` - * - start2 + 8: - - Cr\ :sub:`20` - - Cr\ :sub:`21` - - Cr\ :sub:`22` - - Cr\ :sub:`23` - * - start2 + 12: - - Cr\ :sub:`30` - - Cr\ :sub:`31` - - Cr\ :sub:`32` - - Cr\ :sub:`33` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - 1 - - 2 - - 3 - * - 0 - - YC - - YC - - YC - - YC - * - 1 - - YC - - YC - - YC - - YC - * - 2 - - YC - - YC - - YC - - YC - * - 3 - - YC - - YC - - YC - - YC diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst deleted file mode 100644 index ca073a5098a9..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst +++ /dev/null @@ -1,118 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-YUYV: - -************************** -V4L2_PIX_FMT_YUYV ('YUYV') -************************** - - -Packed format with ½ horizontal chroma resolution, also known as YUV -4:2:2 - - -Description -=========== - -In this format each four bytes is two pixels. Each four bytes is two -Y's, a Cb and a Cr. Each Y goes to one of the pixels, and the Cb and Cr -belong to both pixels. As you can see, the Cr and Cb components have -half the horizontal resolution of the Y component. ``V4L2_PIX_FMT_YUYV`` -is known in the Windows environment as YUY2. - -**Byte Order.** -Each cell is one byte. - - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Cb\ :sub:`00` - - Y'\ :sub:`01` - - Cr\ :sub:`00` - - Y'\ :sub:`02` - - Cb\ :sub:`01` - - Y'\ :sub:`03` - - Cr\ :sub:`01` - * - start + 8: - - Y'\ :sub:`10` - - Cb\ :sub:`10` - - Y'\ :sub:`11` - - Cr\ :sub:`10` - - Y'\ :sub:`12` - - Cb\ :sub:`11` - - Y'\ :sub:`13` - - Cr\ :sub:`11` - * - start + 16: - - Y'\ :sub:`20` - - Cb\ :sub:`20` - - Y'\ :sub:`21` - - Cr\ :sub:`20` - - Y'\ :sub:`22` - - Cb\ :sub:`21` - - Y'\ :sub:`23` - - Cr\ :sub:`21` - * - start + 24: - - Y'\ :sub:`30` - - Cb\ :sub:`30` - - Y'\ :sub:`31` - - Cr\ :sub:`30` - - Y'\ :sub:`32` - - Cb\ :sub:`31` - - Y'\ :sub:`33` - - Cr\ :sub:`31` - - -**Color Sample Location:** - - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - - - 2 - - - - 3 - * - 0 - - Y - - C - - Y - - - - Y - - C - - Y - * - 1 - - Y - - C - - Y - - - - Y - - C - - Y - * - 2 - - Y - - C - - Y - - - - Y - - C - - Y - * - 3 - - Y - - C - - Y - - - - Y - - C - - Y diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst b/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst deleted file mode 100644 index 81ebec525ae5..000000000000 --- a/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst +++ /dev/null @@ -1,108 +0,0 @@ -.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later - -.. _V4L2-PIX-FMT-YVYU: - -************************** -V4L2_PIX_FMT_YVYU ('YVYU') -************************** - - -Variation of ``V4L2_PIX_FMT_YUYV`` with different order of samples in -memory - - -Description -=========== - -In this format each four bytes is two pixels. Each four bytes is two -Y's, a Cb and a Cr. Each Y goes to one of the pixels, and the Cb and Cr -belong to both pixels. As you can see, the Cr and Cb components have -half the horizontal resolution of the Y component. - -**Byte Order.** -Each cell is one byte. - - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - start + 0: - - Y'\ :sub:`00` - - Cr\ :sub:`00` - - Y'\ :sub:`01` - - Cb\ :sub:`00` - - Y'\ :sub:`02` - - Cr\ :sub:`01` - - Y'\ :sub:`03` - - Cb\ :sub:`01` - * - start + 8: - - Y'\ :sub:`10` - - Cr\ :sub:`10` - - Y'\ :sub:`11` - - Cb\ :sub:`10` - - Y'\ :sub:`12` - - Cr\ :sub:`11` - - Y'\ :sub:`13` - - Cb\ :sub:`11` - * - start + 16: - - Y'\ :sub:`20` - - Cr\ :sub:`20` - - Y'\ :sub:`21` - - Cb\ :sub:`20` - - Y'\ :sub:`22` - - Cr\ :sub:`21` - - Y'\ :sub:`23` - - Cb\ :sub:`21` - * - start + 24: - - Y'\ :sub:`30` - - Cr\ :sub:`30` - - Y'\ :sub:`31` - - Cb\ :sub:`30` - - Y'\ :sub:`32` - - Cr\ :sub:`31` - - Y'\ :sub:`33` - - Cb\ :sub:`31` - - -**Color Sample Location:** - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - - * - - - 0 - - - - 1 - - 2 - - - - 3 - * - 0 - - Y - - C - - Y - - Y - - C - - Y - * - 1 - - Y - - C - - Y - - Y - - C - - Y - * - 2 - - Y - - C - - Y - - Y - - C - - Y - * - 3 - - Y - - C - - Y - - Y - - C - - Y diff --git a/Documentation/userspace-api/media/v4l/selection-api-configuration.rst b/Documentation/userspace-api/media/v4l/selection-api-configuration.rst index 37617eda2fa6..fee49bf1a1c0 100644 --- a/Documentation/userspace-api/media/v4l/selection-api-configuration.rst +++ b/Documentation/userspace-api/media/v4l/selection-api-configuration.rst @@ -94,7 +94,7 @@ specified using :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl. The top left corner, width and height of the source rectangle, that is the area from which image date are processed by the hardware, is given -by the ``V4L2_SEL_TGT_CROP``. Its coordinates are expressed in in the +by the ``V4L2_SEL_TGT_CROP``. Its coordinates are expressed in the same coordinate system as the bounds rectangle. The active cropping area must lie completely inside the crop boundaries and the driver may further adjust the requested size and/or position according to hardware diff --git a/Documentation/userspace-api/media/v4l/subdev-formats.rst b/Documentation/userspace-api/media/v4l/subdev-formats.rst index c9b7bb3ca089..7f16cbe46e5c 100644 --- a/Documentation/userspace-api/media/v4l/subdev-formats.rst +++ b/Documentation/userspace-api/media/v4l/subdev-formats.rst @@ -7899,3 +7899,30 @@ formats. - 0x5001 - Interleaved raw UYVY and JPEG image format with embedded meta-data used by Samsung S3C73MX camera sensors. + +.. _v4l2-mbus-metadata-fmts: + +Metadata Formats +^^^^^^^^^^^^^^^^ + +This section lists all metadata formats. + +The following table lists the existing metadata formats. + +.. tabularcolumns:: |p{8.0cm}|p{1.4cm}|p{7.7cm}| + +.. flat-table:: Metadata formats + :header-rows: 1 + :stub-columns: 0 + + * - Identifier + - Code + - Comments + * .. _MEDIA-BUS-FMT-METADATA-FIXED: + + - MEDIA_BUS_FMT_METADATA_FIXED + - 0x7001 + - This format should be used when the same driver handles + both sides of the link and the bus format is a fixed + metadata format that is not configurable from userspace. + Width and height will be set to 0 for this format. diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst index f2173e310d67..b9c62affbb5a 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst @@ -53,7 +53,7 @@ by the ``controls`` fields. To get the current value of a set of controls applications initialize the ``id``, ``size`` and ``reserved2`` fields of each struct :c:type:`v4l2_ext_control` and call the -:ref:`VIDIOC_G_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` ioctl. String controls controls must also set the +:ref:`VIDIOC_G_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` ioctl. String controls must also set the ``string`` field. Controls of compound types (``V4L2_CTRL_FLAG_HAS_PAYLOAD`` is set) must set the ``ptr`` field. @@ -180,10 +180,38 @@ still cause this situation. - ``p_u32`` - A pointer to a matrix control of unsigned 32-bit values. Valid if this control is of type ``V4L2_CTRL_TYPE_U32``. - * - :c:type:`v4l2_area` * + * - struct :c:type:`v4l2_area` * - ``p_area`` - A pointer to a struct :c:type:`v4l2_area`. Valid if this control is of type ``V4L2_CTRL_TYPE_AREA``. + * - struct :c:type:`v4l2_ctrl_h264_sps` * + - ``p_h264_sps`` + - A pointer to a struct :c:type:`v4l2_ctrl_h264_sps`. Valid if this control is + of type ``V4L2_CTRL_TYPE_H264_SPS``. + * - struct :c:type:`v4l2_ctrl_h264_pps` * + - ``p_h264_pps`` + - A pointer to a struct :c:type:`v4l2_ctrl_h264_pps`. Valid if this control is + of type ``V4L2_CTRL_TYPE_H264_PPS``. + * - struct :c:type:`v4l2_ctrl_h264_scaling_matrix` * + - ``p_h264_scaling_matrix`` + - A pointer to a struct :c:type:`v4l2_ctrl_h264_scaling_matrix`. Valid if this control is + of type ``V4L2_CTRL_TYPE_H264_SCALING_MATRIX``. + * - struct :c:type:`v4l2_ctrl_h264_pred_weights` * + - ``p_h264_pred_weights`` + - A pointer to a struct :c:type:`v4l2_ctrl_h264_pred_weights`. Valid if this control is + of type ``V4L2_CTRL_TYPE_H264_PRED_WEIGHTS``. + * - struct :c:type:`v4l2_ctrl_h264_slice_params` * + - ``p_h264_slice_params`` + - A pointer to a struct :c:type:`v4l2_ctrl_h264_slice_params`. Valid if this control is + of type ``V4L2_CTRL_TYPE_H264_SLICE_PARAMS``. + * - struct :c:type:`v4l2_ctrl_h264_decode_params` * + - ``p_h264_decode_params`` + - A pointer to a struct :c:type:`v4l2_ctrl_h264_decode_params`. Valid if this control is + of type ``V4L2_CTRL_TYPE_H264_DECODE_PARAMS``. + * - struct :c:type:`v4l2_ctrl_fwht_params` * + - ``p_fwht_params`` + - A pointer to a struct :c:type:`v4l2_ctrl_fwht_params`. Valid if this control is + of type ``V4L2_CTRL_TYPE_FWHT_PARAMS``. * - void * - ``ptr`` - A pointer to a compound type which can be an N-dimensional array @@ -322,10 +350,10 @@ still cause this situation. :ref:`VIDIOC_S_CTRL <VIDIOC_G_CTRL>` and :ref:`VIDIOC_G_CTRL <VIDIOC_G_CTRL>` ioctl belong to this class. - * - ``V4L2_CTRL_CLASS_MPEG`` + * - ``V4L2_CTRL_CLASS_CODEC`` - 0x990000 - - The class containing MPEG compression controls. These controls are - described in :ref:`mpeg-controls`. + - The class containing stateful codec controls. These controls are + described in :ref:`codec-controls`. * - ``V4L2_CTRL_CLASS_CAMERA`` - 0x9a0000 - The class containing camera controls. These controls are described @@ -358,6 +386,14 @@ still cause this situation. - 0xa20000 - The class containing RF tuner controls. These controls are described in :ref:`rf-tuner-controls`. + * - ``V4L2_CTRL_CLASS_DETECT`` + - 0xa30000 + - The class containing motion or object detection controls. These controls + are described in :ref:`detect-controls`. + * - ``V4L2_CTRL_CLASS_CODEC_STATELESS`` + - 0xa40000 + - The class containing stateless codec controls. These controls are + described in :ref:`codec-stateless-controls`. Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-output.rst b/Documentation/userspace-api/media/v4l/vidioc-g-output.rst index 3138c4cc8fe3..dbcdd51dd2a8 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-output.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-output.rst @@ -46,7 +46,7 @@ To select a video output applications store the number of the desired output in an integer and call the :ref:`VIDIOC_S_OUTPUT <VIDIOC_G_OUTPUT>` ioctl with a pointer to this integer. Side effects are possible. For example outputs may support different video standards, so the driver may implicitly -switch the current standard. standard. Because of these possible side +switch the current standard. Because of these possible side effects applications must select an output before querying or negotiating any other parameters. diff --git a/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst b/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst index fbf8c5962d8a..77e0747a6d28 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst @@ -163,7 +163,7 @@ EINVAL The buffer ``type`` is not supported, or the ``index`` is out of bounds, or no buffers have been allocated yet, or the ``userptr`` or ``length`` are invalid, or the ``V4L2_BUF_FLAG_REQUEST_FD`` flag was - set but the the given ``request_fd`` was invalid, or ``m.fd`` was + set but the given ``request_fd`` was invalid, or ``m.fd`` was an invalid DMABUF file descriptor. EIO diff --git a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst index 9b8716f90f12..82f61f1e2fb8 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst @@ -462,6 +462,12 @@ See also the examples in :ref:`control`. - n/a - A struct :c:type:`v4l2_ctrl_h264_decode_params`, containing H264 decode parameters for stateless video decoders. + * - ``V4L2_CTRL_TYPE_FWHT_PARAMS`` + - n/a + - n/a + - n/a + - A struct :c:type:`v4l2_ctrl_fwht_params`, containing FWHT + parameters for stateless video decoders. * - ``V4L2_CTRL_TYPE_HEVC_SPS`` - n/a - n/a diff --git a/Documentation/userspace-api/media/v4l/yuv-formats.rst b/Documentation/userspace-api/media/v4l/yuv-formats.rst index 4a05a105a9e6..24b34cdfa6fe 100644 --- a/Documentation/userspace-api/media/v4l/yuv-formats.rst +++ b/Documentation/userspace-api/media/v4l/yuv-formats.rst @@ -14,44 +14,260 @@ reconstructed by subtracting from the brightness component. See :ref:`colorspaces` for conversion examples. YUV was chosen because early television would only transmit brightness information. To add color in a way compatible with existing receivers a new signal carrier -was added to transmit the color difference signals. Secondary in the YUV -format the U and V components usually have lower resolution than the Y -component. This is an analog video compression technique taking -advantage of a property of the human visual system, being more sensitive -to brightness information. +was added to transmit the color difference signals. + + +Subsampling +=========== + +YUV formats commonly encode images with a lower resolution for the chroma +components than for the luma component. This compression technique, taking +advantage of the human eye being more sensitive to luminance than color +differences, is called chroma subsampling. + +While many combinations of subsampling factors in the horizontal and vertical +direction are possible, common factors are 1 (no subsampling), 2 and 4, with +horizontal subsampling always larger than or equal to vertical subsampling. +Common combinations are named as follows. + +- `4:4:4`: No subsampling +- `4:2:2`: Horizontal subsampling by 2, no vertical subsampling +- `4:2:0`: Horizontal subsampling by 2, vertical subsampling by 2 +- `4:1:1`: Horizontal subsampling by 4, no vertical subsampling +- `4:1:0`: Horizontal subsampling by 4, vertical subsampling by 4 + +Subsampling the chroma component effectively creates chroma values that can be +located in different spatial locations: + +- .. _yuv-chroma-centered: + + The subsampled chroma value may be calculated by simply averaging the chroma + value of two consecutive pixels. It effectively models the chroma of a pixel + sited between the two original pixels. This is referred to as centered or + interstitially sited chroma. + +- .. _yuv-chroma-cosited: + + The other option is to subsample chroma values in a way that place them in + the same spatial sites as the pixels. This may be performed by skipping every + other chroma sample (creating aliasing artifacts), or with filters using an + odd number of taps. This is referred to as co-sited chroma. + +The following examples show different combination of chroma siting in a 4x4 +image. + +.. flat-table:: 4:2:2 subsampling, interstitially sited + :header-rows: 1 + :stub-columns: 1 + + * - + - 0 + - + - 1 + - + - 2 + - + - 3 + * - 0 + - Y + - C + - Y + - + - Y + - C + - Y + * - 1 + - Y + - C + - Y + - + - Y + - C + - Y + * - 2 + - Y + - C + - Y + - + - Y + - C + - Y + * - 3 + - Y + - C + - Y + - + - Y + - C + - Y + +.. flat-table:: 4:2:2 subsampling, co-sited + :header-rows: 1 + :stub-columns: 1 + + * - + - 0 + - + - 1 + - + - 2 + - + - 3 + * - 0 + - Y/C + - + - Y + - + - Y/C + - + - Y + * - 1 + - Y/C + - + - Y + - + - Y/C + - + - Y + * - 2 + - Y/C + - + - Y + - + - Y/C + - + - Y + * - 3 + - Y/C + - + - Y + - + - Y/C + - + - Y + +.. flat-table:: 4:2:0 subsampling, horizontally interstitially sited, vertically co-sited + :header-rows: 1 + :stub-columns: 1 + + * - + - 0 + - + - 1 + - + - 2 + - + - 3 + * - 0 + - Y + - C + - Y + - + - Y + - C + - Y + * - 1 + - Y + - + - Y + - + - Y + - + - Y + * - 2 + - Y + - C + - Y + - + - Y + - C + - Y + * - 3 + - Y + - + - Y + - + - Y + - + - Y + +.. flat-table:: 4:1:0 subsampling, horizontally and vertically interstitially sited + :header-rows: 1 + :stub-columns: 1 + + * - + - 0 + - + - 1 + - + - 2 + - + - 3 + * - 0 + - Y + - + - Y + - + - Y + - + - Y + * - + - + - + - + - + - + - + - + * - 1 + - Y + - + - Y + - + - Y + - + - Y + * - + - + - + - + - C + - + - + - + * - 2 + - Y + - + - Y + - + - Y + - + - Y + * - + - + - + - + - + - + - + - + * - 3 + - Y + - + - Y + - + - Y + - + - Y .. toctree:: :maxdepth: 1 pixfmt-packed-yuv - pixfmt-grey - pixfmt-y10 - pixfmt-y12 - pixfmt-y14 - pixfmt-y10b - pixfmt-y10p - pixfmt-y16 - pixfmt-y16-be + pixfmt-yuv-planar + pixfmt-yuv-luma pixfmt-y8i pixfmt-y12i pixfmt-uv8 - pixfmt-yuyv - pixfmt-uyvy - pixfmt-yvyu - pixfmt-vyuy - pixfmt-y41p - pixfmt-yuv420 - pixfmt-yuv420m - pixfmt-yuv422m - pixfmt-yuv444m - pixfmt-yuv410 - pixfmt-yuv422p - pixfmt-yuv411p - pixfmt-nv12 - pixfmt-nv12m - pixfmt-nv12mt - pixfmt-nv16 - pixfmt-nv16m - pixfmt-nv24 pixfmt-m420 |