Documentation/media/uapi/v4l/v4l2-selection-flags.rst

   1 .. -*- coding: utf-8; mode: rst -*-
   2
   3 .. _v4l2-selection-flags:
   4
   5 ***************
   6 Selection flags
   7 ***************
   8
   9
  10 .. _v4l2-selection-flags-table:
  11
  12 .. flat-table:: Selection flag definitions
  13     :header-rows:  1
  14     :stub-columns: 0
  15
  16
  17     -  .. row 1
  18
  19        -  Flag name
  20
  21        -  id
  22
  23        -  Definition
  24
  25        -  Valid for V4L2
  26
  27        -  Valid for V4L2 subdev
  28
  29     -  .. row 2
  30
  31        -  ``V4L2_SEL_FLAG_GE``
  32
  33        -  (1 << 0)
  34
  35        -  Suggest the driver it should choose greater or equal rectangle (in
  36           size) than was requested. Albeit the driver may choose a lesser
  37           size, it will only do so due to hardware limitations. Without this
  38           flag (and ``V4L2_SEL_FLAG_LE``) the behaviour is to choose the
  39           closest possible rectangle.
  40
  41        -  Yes
  42
  43        -  Yes
  44
  45     -  .. row 3
  46
  47        -  ``V4L2_SEL_FLAG_LE``
  48
  49        -  (1 << 1)
  50
  51        -  Suggest the driver it should choose lesser or equal rectangle (in
  52           size) than was requested. Albeit the driver may choose a greater
  53           size, it will only do so due to hardware limitations.
  54
  55        -  Yes
  56
  57        -  Yes
  58
  59     -  .. row 4
  60
  61        -  ``V4L2_SEL_FLAG_KEEP_CONFIG``
  62
  63        -  (1 << 2)
  64
  65        -  The configuration must not be propagated to any further processing
  66           steps. If this flag is not given, the configuration is propagated
  67           inside the subdevice to all further processing steps.
  68
  69        -  No
  70
  71        -  Yes