AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-15 18:56:46 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

media: docs: clarify relationship between crop and selection APIs

Browse Source 
Having two somewhat similar and largely overlapping APIs is confusing,
especially since the older one appears in the docs before the newer
and most featureful counterpart.

Clarify all of this in several ways:
 - swap the two sections
 - give a name to the two APIs in the section names
 - add a note at the beginning of the CROP API section
 - update note about VIDIOC_CROPCAP

Also remove a note that is incorrect (correct wording is in
vidioc-cropcap.rst).

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Luca Ceresoli 2018-05-14 07:27:24 -04:00 committed by Mauro Carvalho Chehab
parent e81ff408c1
commit 579d76deb1
4 changed files with 20 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/media/uapi/v4l/common.rst
View File

@ -41,6 +41,6 @@ applicable to all devices.
extended-controls extended-controls
format format
planar-apis planar-apis
crop
selection-api selection-api
crop
streaming-par streaming-par

22
Documentation/media/uapi/v4l/crop.rst
View File

@ -2,9 +2,18 @@
.. _crop: .. _crop:
************************************* *****************************************************
Image Cropping, Insertion and Scaling Image Cropping, Insertion and Scaling -- the CROP API
************************************* *****************************************************
.. note::
The CROP API is mostly superseded by the newer :ref:`SELECTION API
<selection-api>`. The new API should be preferred in most cases,
with the exception of pixel aspect ratio detection, which is
implemented by :ref:`VIDIOC_CROPCAP <VIDIOC_CROPCAP>` and has no
equivalent in the SELECTION API. See :ref:`selection-vs-crop` for a
comparison of the two APIs.
Some video capture devices can sample a subsection of the picture and Some video capture devices can sample a subsection of the picture and
shrink or enlarge it to an image of arbitrary size. We call these shrink or enlarge it to an image of arbitrary size. We call these
@ -42,10 +51,9 @@ where applicable) will be fixed in this case.
.. note:: .. note::
All capture and output devices must support the All capture and output devices that support the CROP or SELECTION
:ref:`VIDIOC_CROPCAP <VIDIOC_CROPCAP>` ioctl such that applications API will also support the :ref:`VIDIOC_CROPCAP <VIDIOC_CROPCAP>`
can determine if scaling takes place. ioctl.
Cropping Structures Cropping Structures
=================== ===================

2
Documentation/media/uapi/v4l/selection-api-005.rst
View File

@ -1,5 +1,7 @@
.. -*- coding: utf-8; mode: rst -*- .. -*- coding: utf-8; mode: rst -*-
.. _selection-vs-crop:
******************************** ********************************
Comparison with old cropping API Comparison with old cropping API
******************************** ********************************

4
Documentation/media/uapi/v4l/selection-api.rst
View File

@ -2,8 +2,8 @@
.. _selection-api: .. _selection-api:
API for cropping, composing and scaling Cropping, composing and scaling -- the SELECTION API
======================================= ====================================================
.. toctree:: .. toctree::