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[media] v4l: Document integer menu controls 

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sakari Ailus 2011-08-06 16:13:47 -03:00 committed by Mauro Carvalho Chehab
parent ce580fe519
commit 6ec299f3dc
3 changed files with 55 additions and 2 deletions
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10
Documentation/DocBook/media/v4l/compat.xml
View File

@ -2410,6 +2410,16 @@ details.</para>
</orderedlist>
</section>
<section>
<title>V4L2 in Linux 3.5</title>
<orderedlist>
<listitem>
<para>Added integer menus, the new type will be
V4L2_CTRL_TYPE_INTEGER_MENU.</para>
</listitem>
</orderedlist>
</section>
<section id="other">
<title>Relation of V4L2 to other Linux multimedia APIs</title>

8
Documentation/DocBook/media/v4l/v4l2.xml
View File

@ -127,6 +127,14 @@ structs, ioctls) must be noted in more detail in the history chapter
(compat.xml), along with the possible impact on existing drivers and
applications. -->
<revision>
<revnumber>3.5</revnumber>
<date>2012-04-02</date>
<authorinitials>sa</authorinitials>
<revremark>Added V4L2_CTRL_TYPE_INTEGER_MENU.
</revremark>
</revision>
<revision>
<revnumber>3.4</revnumber>
<date>2012-01-25</date>

39
Documentation/DocBook/media/v4l/vidioc-queryctrl.xml
View File

@ -215,11 +215,12 @@ the array to zero.</entry>
<table pgwide="1" frame="none" id="v4l2-querymenu">
<title>struct <structname>v4l2_querymenu</structname></title>
<tgroup cols="3">
<tgroup cols="4">
&cs-str;
<tbody valign="top">
<row>
<entry>__u32</entry>
<entry></entry>
<entry><structfield>id</structfield></entry>
<entry>Identifies the control, set by the application
from the respective &v4l2-queryctrl;
@ -227,18 +228,38 @@ from the respective &v4l2-queryctrl;
</row>
<row>
<entry>__u32</entry>
<entry></entry>
<entry><structfield>index</structfield></entry>
<entry>Index of the menu item, starting at zero, set by
the application.</entry>
</row>
<row>
<entry>union</entry>
<entry></entry>
<entry></entry>
<entry></entry>
</row>
<row>
<entry></entry>
<entry>__u8</entry>
<entry><structfield>name</structfield>[32]</entry>
<entry>Name of the menu item, a NUL-terminated ASCII
string. This information is intended for the user.</entry>
string. This information is intended for the user. This field is valid
for <constant>V4L2_CTRL_FLAG_MENU</constant> type controls.</entry>
</row>
<row>
<entry></entry>
<entry>__s64</entry>
<entry><structfield>value</structfield></entry>
<entry>
Value of the integer menu item. This field is valid for
<constant>V4L2_CTRL_FLAG_INTEGER_MENU</constant> type
controls.
</entry>
</row>
<row>
<entry>__u32</entry>
<entry></entry>
<entry><structfield>reserved</structfield></entry>
<entry>Reserved for future extensions. Drivers must set
the array to zero.</entry>
@ -291,6 +312,20 @@ values which are actually different on the hardware.</entry>
the menu items can be enumerated with the
<constant>VIDIOC_QUERYMENU</constant> ioctl.</entry>
</row>
<row>
<entry><constant>V4L2_CTRL_TYPE_INTEGER_MENU</constant></entry>
<entry>&ge; 0</entry>
<entry>1</entry>
<entry>N-1</entry>
<entry>
The control has a menu of N choices. The values of the
menu items can be enumerated with the
<constant>VIDIOC_QUERYMENU</constant> ioctl. This is
similar to <constant>V4L2_CTRL_TYPE_MENU</constant>
except that instead of strings, the menu items are
signed 64-bit integers.
</entry>
</row>
<row>
<entry><constant>V4L2_CTRL_TYPE_BITMASK</constant></entry>
<entry>0</entry>