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Diffstat (limited to 'Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst')
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diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index 1fa9a54f63bf..8a48ac30bc6a 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -1798,345 +1798,6 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - Quantization parameter for a P frame for FWHT. Valid range: from 1 to 31. -.. _v4l2-mpeg-vp8: - -``V4L2_CID_MPEG_VIDEO_VP8_FRAME (struct)`` - Specifies the frame parameters for the associated VP8 parsed frame data. - This includes the necessary parameters for - configuring a stateless hardware decoding pipeline for VP8. - The bitstream parameters are defined according to :ref:`vp8`. - - .. note:: - - This compound control is not yet part of the public kernel API and - it is expected to change. - -.. c:type:: v4l2_ctrl_vp8_frame - -.. raw:: latex - - \small - -.. tabularcolumns:: |p{7.0cm}|p{4.6cm}|p{5.7cm}| - -.. cssclass:: longtable - -.. flat-table:: struct v4l2_ctrl_vp8_frame - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - struct :c:type:`v4l2_vp8_segment` - - ``segment`` - - Structure with segment-based adjustments metadata. - * - struct :c:type:`v4l2_vp8_loop_filter` - - ``lf`` - - Structure with loop filter level adjustments metadata. - * - struct :c:type:`v4l2_vp8_quantization` - - ``quant`` - - Structure with VP8 dequantization indices metadata. - * - struct :c:type:`v4l2_vp8_entropy` - - ``entropy`` - - Structure with VP8 entropy coder probabilities metadata. - * - struct :c:type:`v4l2_vp8_entropy_coder_state` - - ``coder_state`` - - Structure with VP8 entropy coder state. - * - __u16 - - ``width`` - - The width of the frame. Must be set for all frames. - * - __u16 - - ``height`` - - The height of the frame. Must be set for all frames. - * - __u8 - - ``horizontal_scale`` - - Horizontal scaling factor. - * - __u8 - - ``vertical_scaling factor`` - - Vertical scale. - * - __u8 - - ``version`` - - Bitstream version. - * - __u8 - - ``prob_skip_false`` - - Indicates the probability that the macroblock is not skipped. - * - __u8 - - ``prob_intra`` - - Indicates the probability that a macroblock is intra-predicted. - * - __u8 - - ``prob_last`` - - Indicates the probability that the last reference frame is used - for inter-prediction - * - __u8 - - ``prob_gf`` - - Indicates the probability that the golden reference frame is used - for inter-prediction - * - __u8 - - ``num_dct_parts`` - - Number of DCT coefficients partitions. Must be one of: 1, 2, 4, or 8. - * - __u32 - - ``first_part_size`` - - Size of the first partition, i.e. the control partition. - * - __u32 - - ``first_part_header_bits`` - - Size in bits of the first partition header portion. - * - __u32 - - ``dct_part_sizes[8]`` - - DCT coefficients sizes. - * - __u64 - - ``last_frame_ts`` - - Timestamp for the V4L2 capture buffer to use as last reference frame, used - with inter-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. - * - __u64 - - ``golden_frame_ts`` - - Timestamp for the V4L2 capture buffer to use as last reference frame, used - with inter-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. - * - __u64 - - ``alt_frame_ts`` - - Timestamp for the V4L2 capture buffer to use as alternate reference frame, used - with inter-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. - * - __u64 - - ``flags`` - - See :ref:`Frame Flags <vp8_frame_flags>` - -.. raw:: latex - - \normalsize - -.. _vp8_frame_flags: - -``Frame Flags`` - -.. tabularcolumns:: |p{9.8cm}|p{0.8cm}|p{6.7cm}| - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_VP8_FRAME_FLAG_KEY_FRAME`` - - 0x01 - - Indicates if the frame is a key frame. - * - ``V4L2_VP8_FRAME_FLAG_EXPERIMENTAL`` - - 0x02 - - Experimental bitstream. - * - ``V4L2_VP8_FRAME_FLAG_SHOW_FRAME`` - - 0x04 - - Show frame flag, indicates if the frame is for display. - * - ``V4L2_VP8_FRAME_FLAG_MB_NO_SKIP_COEFF`` - - 0x08 - - Enable/disable skipping of macroblocks with no non-zero coefficients. - * - ``V4L2_VP8_FRAME_FLAG_SIGN_BIAS_GOLDEN`` - - 0x10 - - Sign of motion vectors when the golden frame is referenced. - * - ``V4L2_VP8_FRAME_FLAG_SIGN_BIAS_ALT`` - - 0x20 - - Sign of motion vectors when the alt frame is referenced. - -.. c:type:: v4l2_vp8_entropy_coder_state - -.. cssclass:: longtable - -.. tabularcolumns:: |p{1.0cm}|p{2.0cm}|p{14.3cm}| - -.. flat-table:: struct v4l2_vp8_entropy_coder_state - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u8 - - ``range`` - - - * - __u8 - - ``value`` - - - * - __u8 - - ``bit_count`` - - - * - __u8 - - ``padding`` - - Applications and drivers must set this to zero. - -.. c:type:: v4l2_vp8_segment - -.. cssclass:: longtable - -.. tabularcolumns:: |p{1.2cm}|p{4.0cm}|p{12.1cm}| - -.. flat-table:: struct v4l2_vp8_segment - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __s8 - - ``quant_update[4]`` - - Signed quantizer value update. - * - __s8 - - ``lf_update[4]`` - - Signed loop filter level value update. - * - __u8 - - ``segment_probs[3]`` - - Segment probabilities. - * - __u8 - - ``padding`` - - Applications and drivers must set this to zero. - * - __u32 - - ``flags`` - - See :ref:`Segment Flags <vp8_segment_flags>` - -.. _vp8_segment_flags: - -``Segment Flags`` - -.. raw:: latex - - \small - -.. tabularcolumns:: |p{10cm}|p{1.0cm}|p{6.3cm}| - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_VP8_SEGMENT_FLAG_ENABLED`` - - 0x01 - - Enable/disable segment-based adjustments. - * - ``V4L2_VP8_SEGMENT_FLAG_UPDATE_MAP`` - - 0x02 - - Indicates if the macroblock segmentation map is updated in this frame. - * - ``V4L2_VP8_SEGMENT_FLAG_UPDATE_FEATURE_DATA`` - - 0x04 - - Indicates if the segment feature data is updated in this frame. - * - ``V4L2_VP8_SEGMENT_FLAG_DELTA_VALUE_MODE`` - - 0x08 - - If is set, the segment feature data mode is delta-value. - If cleared, it's absolute-value. - -.. raw:: latex - - \normalsize - -.. c:type:: v4l2_vp8_loop_filter - -.. cssclass:: longtable - -.. tabularcolumns:: |p{1.5cm}|p{3.9cm}|p{11.9cm}| - -.. flat-table:: struct v4l2_vp8_loop_filter - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __s8 - - ``ref_frm_delta[4]`` - - Reference adjustment (signed) delta value. - * - __s8 - - ``mb_mode_delta[4]`` - - Macroblock prediction mode adjustment (signed) delta value. - * - __u8 - - ``sharpness_level`` - - Sharpness level - * - __u8 - - ``level`` - - Filter level - * - __u16 - - ``padding`` - - Applications and drivers must set this to zero. - * - __u32 - - ``flags`` - - See :ref:`Loop Filter Flags <vp8_loop_filter_flags>` - -.. _vp8_loop_filter_flags: - -``Loop Filter Flags`` - -.. tabularcolumns:: |p{7.0cm}|p{1.2cm}|p{9.1cm}| - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - ``V4L2_VP8_LF_ADJ_ENABLE`` - - 0x01 - - Enable/disable macroblock-level loop filter adjustment. - * - ``V4L2_VP8_LF_DELTA_UPDATE`` - - 0x02 - - Indicates if the delta values used in an adjustment are updated. - * - ``V4L2_VP8_LF_FILTER_TYPE_SIMPLE`` - - 0x04 - - If set, indicates the filter type is simple. - If cleared, the filter type is normal. - -.. c:type:: v4l2_vp8_quantization - -.. tabularcolumns:: |p{1.5cm}|p{3.5cm}|p{12.3cm}| - -.. flat-table:: struct v4l2_vp8_quantization - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u8 - - ``y_ac_qi`` - - Luma AC coefficient table index. - * - __s8 - - ``y_dc_delta`` - - Luma DC delta vaue. - * - __s8 - - ``y2_dc_delta`` - - Y2 block DC delta value. - * - __s8 - - ``y2_ac_delta`` - - Y2 block AC delta value. - * - __s8 - - ``uv_dc_delta`` - - Chroma DC delta value. - * - __s8 - - ``uv_ac_delta`` - - Chroma AC delta value. - * - __u16 - - ``padding`` - - Applications and drivers must set this to zero. - -.. c:type:: v4l2_vp8_entropy - -.. cssclass:: longtable - -.. tabularcolumns:: |p{1.5cm}|p{5.8cm}|p{10.0cm}| - -.. flat-table:: struct v4l2_vp8_entropy - :header-rows: 0 - :stub-columns: 0 - :widths: 1 1 2 - - * - __u8 - - ``coeff_probs[4][8][3][11]`` - - Coefficient update probabilities. - * - __u8 - - ``y_mode_probs[4]`` - - Luma mode update probabilities. - * - __u8 - - ``uv_mode_probs[3]`` - - Chroma mode update probabilities. - * - __u8 - - ``mv_probs[2][19]`` - - MV decoding update probabilities. - * - __u8 - - ``padding[3]`` - - Applications and drivers must set this to zero. - .. raw:: latex \normalsize |