Documentation/userspace-api/media/v4l/v4l2-selection-flags.rst

Source file repositories/reference/linux-study-clean/Documentation/userspace-api/media/v4l/v4l2-selection-flags.rst

File Facts

System: Linux kernel
Corpus path: Documentation/userspace-api/media/v4l/v4l2-selection-flags.rst
Extension: .rst
Size: 1441 bytes
Lines: 56
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: documentation
Status: atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L

.. _v4l2-selection-flags:

***************
Selection flags
***************

.. _v4l2-selection-flags-table:

.. raw:: latex

   \small

.. tabularcolumns:: |p{5.6cm}|p{2.0cm}|p{6.5cm}|p{1.2cm}|p{1.2cm}|

.. cssclass:: longtable

.. flat-table:: Selection flag definitions
    :header-rows:  1
    :stub-columns: 0

    * - Flag name
      - id
      - Definition
      - Valid for V4L2
      - Valid for V4L2 subdev
    * - ``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
    * - ``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
    * - ``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

.. raw:: latex

   \normalsize

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.