cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ext-ctrls-detect.rst (2227B)

      1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
      2
      3.. _detect-controls:
      4
      5************************
      6Detect Control Reference
      7************************
      8
      9The Detect class includes controls for common features of various motion
     10or object detection capable devices.
     11
     12
     13.. _detect-control-id:
     14
     15Detect Control IDs
     16==================
     17
     18``V4L2_CID_DETECT_CLASS (class)``
     19    The Detect class descriptor. Calling
     20    :ref:`VIDIOC_QUERYCTRL` for this control will
     21    return a description of this control class.
     22
     23``V4L2_CID_DETECT_MD_MODE (menu)``
     24    Sets the motion detection mode.
     25
     26.. tabularcolumns:: |p{7.7cm}|p{9.8cm}|
     27
     28.. flat-table::
     29    :header-rows:  0
     30    :stub-columns: 0
     31
     32    * - ``V4L2_DETECT_MD_MODE_DISABLED``
     33      - Disable motion detection.
     34    * - ``V4L2_DETECT_MD_MODE_GLOBAL``
     35      - Use a single motion detection threshold.
     36    * - ``V4L2_DETECT_MD_MODE_THRESHOLD_GRID``
     37      - The image is divided into a grid, each cell with its own motion
     38	detection threshold. These thresholds are set through the
     39	``V4L2_CID_DETECT_MD_THRESHOLD_GRID`` matrix control.
     40    * - ``V4L2_DETECT_MD_MODE_REGION_GRID``
     41      - The image is divided into a grid, each cell with its own region
     42	value that specifies which per-region motion detection thresholds
     43	should be used. Each region has its own thresholds. How these
     44	per-region thresholds are set up is driver-specific. The region
     45	values for the grid are set through the
     46	``V4L2_CID_DETECT_MD_REGION_GRID`` matrix control.
     47
     48
     49
     50``V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD (integer)``
     51    Sets the global motion detection threshold to be used with the
     52    ``V4L2_DETECT_MD_MODE_GLOBAL`` motion detection mode.
     53
     54``V4L2_CID_DETECT_MD_THRESHOLD_GRID (__u16 matrix)``
     55    Sets the motion detection thresholds for each cell in the grid. To
     56    be used with the ``V4L2_DETECT_MD_MODE_THRESHOLD_GRID`` motion
     57    detection mode. Matrix element (0, 0) represents the cell at the
     58    top-left of the grid.
     59
     60``V4L2_CID_DETECT_MD_REGION_GRID (__u8 matrix)``
     61    Sets the motion detection region value for each cell in the grid. To
     62    be used with the ``V4L2_DETECT_MD_MODE_REGION_GRID`` motion
     63    detection mode. Matrix element (0, 0) represents the cell at the
     64    top-left of the grid.