mirror of https://gitee.com/openkylin/linux.git
73 lines
1.4 KiB
ReStructuredText
73 lines
1.4 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
|
|
|
|
.. _v4l2-selection-flags:
|
|
|
|
***************
|
|
Selection flags
|
|
***************
|
|
|
|
.. tabularcolumns:: |p{5.2cm}|p{2.0cm}|p{6.5cm}|p{1.2cm}|p{1.6cm}|
|
|
|
|
.. _v4l2-selection-flags-table:
|
|
|
|
.. flat-table:: Selection flag definitions
|
|
:header-rows: 1
|
|
:stub-columns: 0
|
|
|
|
|
|
- .. row 1
|
|
|
|
- Flag name
|
|
|
|
- id
|
|
|
|
- Definition
|
|
|
|
- Valid for V4L2
|
|
|
|
- Valid for V4L2 subdev
|
|
|
|
- .. row 2
|
|
|
|
- ``V4L2_SEL_FLAG_GE``
|
|
|
|
- (1 << 0)
|
|
|
|
- Suggest the driver it should choose greater or equal rectangle (in
|
|
size) than was requested. Albeit the driver may choose a lesser
|
|
size, it will only do so due to hardware limitations. Without this
|
|
flag (and ``V4L2_SEL_FLAG_LE``) the behaviour is to choose the
|
|
closest possible rectangle.
|
|
|
|
- Yes
|
|
|
|
- Yes
|
|
|
|
- .. row 3
|
|
|
|
- ``V4L2_SEL_FLAG_LE``
|
|
|
|
- (1 << 1)
|
|
|
|
- Suggest the driver it should choose lesser or equal rectangle (in
|
|
size) than was requested. Albeit the driver may choose a greater
|
|
size, it will only do so due to hardware limitations.
|
|
|
|
- Yes
|
|
|
|
- Yes
|
|
|
|
- .. row 4
|
|
|
|
- ``V4L2_SEL_FLAG_KEEP_CONFIG``
|
|
|
|
- (1 << 2)
|
|
|
|
- The configuration must not be propagated to any further processing
|
|
steps. If this flag is not given, the configuration is propagated
|
|
inside the subdevice to all further processing steps.
|
|
|
|
- No
|
|
|
|
- Yes
|