[media] v4l: v4l2_subdev userspace frame interval API
The three new ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, VIDIOC_SUBDEV_G_FRAME_INTERVAL and VIDIOC_SUBDEV_S_FRAME_INTERVAL can be used to enumerate and configure a subdev's frame rate from userspace. Two new video::g/s_frame_interval subdev operations are introduced to support those ioctls. The existing video::g/s_parm operations are deprecated and shouldn't be used anymore. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart
Mauro Carvalho Chehab
Родитель
333c8b9778
Коммит
35c3017a29
|
|
@ -89,7 +89,9 @@
|
|||
<!ENTITY VIDIOC-SUBDEV-ENUM-FRAME-SIZE "<link linkend='vidioc-subdev-enum-frame-size'><constant>VIDIOC_SUBDEV_ENUM_FRAME_SIZE</constant></link>">
|
||||
<!ENTITY VIDIOC-SUBDEV-ENUM-MBUS-CODE "<link linkend='vidioc-subdev-enum-mbus-code'><constant>VIDIOC_SUBDEV_ENUM_MBUS_CODE</constant></link>">
|
||||
<!ENTITY VIDIOC-SUBDEV-G-FMT "<link linkend='vidioc-subdev-g-fmt'><constant>VIDIOC_SUBDEV_G_FMT</constant></link>">
|
||||
<!ENTITY VIDIOC-SUBDEV-G-FRAME-INTERVAL "<link linkend='vidioc-subdev-g-frame-interval'><constant>VIDIOC_SUBDEV_G_FRAME_INTERVAL</constant></link>">
|
||||
<!ENTITY VIDIOC-SUBDEV-S-FMT "<link linkend='vidioc-subdev-g-fmt'><constant>VIDIOC_SUBDEV_S_FMT</constant></link>">
|
||||
<!ENTITY VIDIOC-SUBDEV-S-FRAME-INTERVAL "<link linkend='vidioc-subdev-g-frame-interval'><constant>VIDIOC_SUBDEV_S_FRAME_INTERVAL</constant></link>">
|
||||
<!ENTITY VIDIOC-TRY-ENCODER-CMD "<link linkend='vidioc-encoder-cmd'><constant>VIDIOC_TRY_ENCODER_CMD</constant></link>">
|
||||
<!ENTITY VIDIOC-TRY-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_TRY_EXT_CTRLS</constant></link>">
|
||||
<!ENTITY VIDIOC-TRY-FMT "<link linkend='vidioc-g-fmt'><constant>VIDIOC_TRY_FMT</constant></link>">
|
||||
|
|
@ -193,6 +195,8 @@
|
|||
<!ENTITY v4l2-sliced-vbi-cap "struct <link linkend='v4l2-sliced-vbi-cap'>v4l2_sliced_vbi_cap</link>">
|
||||
<!ENTITY v4l2-sliced-vbi-data "struct <link linkend='v4l2-sliced-vbi-data'>v4l2_sliced_vbi_data</link>">
|
||||
<!ENTITY v4l2-sliced-vbi-format "struct <link linkend='v4l2-sliced-vbi-format'>v4l2_sliced_vbi_format</link>">
|
||||
<!ENTITY v4l2-subdev-frame-interval "struct <link linkend='v4l2-subdev-frame-interval'>v4l2_subdev_frame_interval</link>">
|
||||
<!ENTITY v4l2-subdev-frame-interval-enum "struct <link linkend='v4l2-subdev-frame-interval-enum'>v4l2_subdev_frame_interval_enum</link>">
|
||||
<!ENTITY v4l2-subdev-frame-size-enum "struct <link linkend='v4l2-subdev-frame-size-enum'>v4l2_subdev_frame_size_enum</link>">
|
||||
<!ENTITY v4l2-subdev-format "struct <link linkend='v4l2-subdev-format'>v4l2_subdev_format</link>">
|
||||
<!ENTITY v4l2-subdev-mbus-code-enum "struct <link linkend='v4l2-subdev-mbus-code-enum'>v4l2_subdev_mbus_code_enum</link>">
|
||||
|
|
@ -331,10 +335,12 @@
|
|||
<!ENTITY sub-reqbufs SYSTEM "v4l/vidioc-reqbufs.xml">
|
||||
<!ENTITY sub-s-hw-freq-seek SYSTEM "v4l/vidioc-s-hw-freq-seek.xml">
|
||||
<!ENTITY sub-streamon SYSTEM "v4l/vidioc-streamon.xml">
|
||||
<!ENTITY sub-subdev-enum-frame-interval SYSTEM "v4l/vidioc-subdev-enum-frame-interval.xml">
|
||||
<!ENTITY sub-subdev-enum-frame-size SYSTEM "v4l/vidioc-subdev-enum-frame-size.xml">
|
||||
<!ENTITY sub-subdev-enum-mbus-code SYSTEM "v4l/vidioc-subdev-enum-mbus-code.xml">
|
||||
<!ENTITY sub-subdev-formats SYSTEM "v4l/subdev-formats.xml">
|
||||
<!ENTITY sub-subdev-g-fmt SYSTEM "v4l/vidioc-subdev-g-fmt.xml">
|
||||
<!ENTITY sub-subdev-g-frame-interval SYSTEM "v4l/vidioc-subdev-g-frame-interval.xml">
|
||||
<!ENTITY sub-capture-c SYSTEM "v4l/capture.c.xml">
|
||||
<!ENTITY sub-keytable-c SYSTEM "v4l/keytable.c.xml">
|
||||
<!ENTITY sub-v4l2grab-c SYSTEM "v4l/v4l2grab.c.xml">
|
||||
|
|
|
|||
|
|
@ -507,9 +507,11 @@ and discussions on the V4L mailing list.</revremark>
|
|||
&sub-reqbufs;
|
||||
&sub-s-hw-freq-seek;
|
||||
&sub-streamon;
|
||||
&sub-subdev-enum-frame-interval;
|
||||
&sub-subdev-enum-frame-size;
|
||||
&sub-subdev-enum-mbus-code;
|
||||
&sub-subdev-g-fmt;
|
||||
&sub-subdev-g-frame-interval;
|
||||
&sub-subscribe-event;
|
||||
<!-- End of ioctls. -->
|
||||
&sub-mmap;
|
||||
|
|
|
|||
|
|
@ -0,0 +1,152 @@
|
|||
<refentry id="vidioc-subdev-enum-frame-interval">
|
||||
<refmeta>
|
||||
<refentrytitle>ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL</refentrytitle>
|
||||
&manvol;
|
||||
</refmeta>
|
||||
|
||||
<refnamediv>
|
||||
<refname>VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL</refname>
|
||||
<refpurpose>Enumerate frame intervals</refpurpose>
|
||||
</refnamediv>
|
||||
|
||||
<refsynopsisdiv>
|
||||
<funcsynopsis>
|
||||
<funcprototype>
|
||||
<funcdef>int <function>ioctl</function></funcdef>
|
||||
<paramdef>int <parameter>fd</parameter></paramdef>
|
||||
<paramdef>int <parameter>request</parameter></paramdef>
|
||||
<paramdef>struct v4l2_subdev_frame_interval_enum *
|
||||
<parameter>argp</parameter></paramdef>
|
||||
</funcprototype>
|
||||
</funcsynopsis>
|
||||
</refsynopsisdiv>
|
||||
|
||||
<refsect1>
|
||||
<title>Arguments</title>
|
||||
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term><parameter>fd</parameter></term>
|
||||
<listitem>
|
||||
<para>&fd;</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><parameter>request</parameter></term>
|
||||
<listitem>
|
||||
<para>VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><parameter>argp</parameter></term>
|
||||
<listitem>
|
||||
<para></para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</refsect1>
|
||||
|
||||
<refsect1>
|
||||
<title>Description</title>
|
||||
|
||||
<note>
|
||||
<title>Experimental</title>
|
||||
<para>This is an <link linkend="experimental">experimental</link>
|
||||
interface and may change in the future.</para>
|
||||
</note>
|
||||
|
||||
<para>This ioctl lets applications enumerate available frame intervals on a
|
||||
given sub-device pad. Frame intervals only makes sense for sub-devices that
|
||||
can control the frame period on their own. This includes, for instance,
|
||||
image sensors and TV tuners.</para>
|
||||
|
||||
<para>For the common use case of image sensors, the frame intervals
|
||||
available on the sub-device output pad depend on the frame format and size
|
||||
on the same pad. Applications must thus specify the desired format and size
|
||||
when enumerating frame intervals.</para>
|
||||
|
||||
<para>To enumerate frame intervals applications initialize the
|
||||
<structfield>index</structfield>, <structfield>pad</structfield>,
|
||||
<structfield>code</structfield>, <structfield>width</structfield> and
|
||||
<structfield>height</structfield> fields of
|
||||
&v4l2-subdev-frame-interval-enum; and call the
|
||||
<constant>VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL</constant> ioctl with a pointer
|
||||
to this structure. Drivers fill the rest of the structure or return
|
||||
an &EINVAL; if one of the input fields is invalid. All frame intervals are
|
||||
enumerable by beginning at index zero and incrementing by one until
|
||||
<errorcode>EINVAL</errorcode> is returned.</para>
|
||||
|
||||
<para>Available frame intervals may depend on the current 'try' formats
|
||||
at other pads of the sub-device, as well as on the current active links. See
|
||||
&VIDIOC-SUBDEV-G-FMT; for more information about the try formats.</para>
|
||||
|
||||
<para>Sub-devices that support the frame interval enumeration ioctl should
|
||||
implemented it on a single pad only. Its behaviour when supported on
|
||||
multiple pads of the same sub-device is not defined.</para>
|
||||
|
||||
<table pgwide="1" frame="none" id="v4l2-subdev-frame-interval-enum">
|
||||
<title>struct <structname>v4l2_subdev_frame_interval_enum</structname></title>
|
||||
<tgroup cols="3">
|
||||
&cs-str;
|
||||
<tbody valign="top">
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>index</structfield></entry>
|
||||
<entry>Number of the format in the enumeration, set by the
|
||||
application.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>pad</structfield></entry>
|
||||
<entry>Pad number as reported by the media controller API.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>code</structfield></entry>
|
||||
<entry>The media bus format code, as defined in
|
||||
<xref linkend="v4l2-mbus-format" />.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>width</structfield></entry>
|
||||
<entry>Frame width, in pixels.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>height</structfield></entry>
|
||||
<entry>Frame height, in pixels.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>&v4l2-fract;</entry>
|
||||
<entry><structfield>interval</structfield></entry>
|
||||
<entry>Period, in seconds, between consecutive video frames.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>reserved</structfield>[9]</entry>
|
||||
<entry>Reserved for future extensions. Applications and drivers must
|
||||
set the array to zero.</entry>
|
||||
</row>
|
||||
</tbody>
|
||||
</tgroup>
|
||||
</table>
|
||||
</refsect1>
|
||||
|
||||
<refsect1>
|
||||
&return-value;
|
||||
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term><errorcode>EINVAL</errorcode></term>
|
||||
<listitem>
|
||||
<para>The &v4l2-subdev-frame-interval-enum;
|
||||
<structfield>pad</structfield> references a non-existing pad, one of
|
||||
the <structfield>code</structfield>, <structfield>width</structfield>
|
||||
or <structfield>height</structfield> fields are invalid for the given
|
||||
pad or the <structfield>index</structfield> field is out of bounds.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
|
@ -0,0 +1,141 @@
|
|||
<refentry id="vidioc-subdev-g-frame-interval">
|
||||
<refmeta>
|
||||
<refentrytitle>ioctl VIDIOC_SUBDEV_G_FRAME_INTERVAL, VIDIOC_SUBDEV_S_FRAME_INTERVAL</refentrytitle>
|
||||
&manvol;
|
||||
</refmeta>
|
||||
|
||||
<refnamediv>
|
||||
<refname>VIDIOC_SUBDEV_G_FRAME_INTERVAL</refname>
|
||||
<refname>VIDIOC_SUBDEV_S_FRAME_INTERVAL</refname>
|
||||
<refpurpose>Get or set the frame interval on a subdev pad</refpurpose>
|
||||
</refnamediv>
|
||||
|
||||
<refsynopsisdiv>
|
||||
<funcsynopsis>
|
||||
<funcprototype>
|
||||
<funcdef>int <function>ioctl</function></funcdef>
|
||||
<paramdef>int <parameter>fd</parameter></paramdef>
|
||||
<paramdef>int <parameter>request</parameter></paramdef>
|
||||
<paramdef>struct v4l2_subdev_frame_interval *<parameter>argp</parameter>
|
||||
</paramdef>
|
||||
</funcprototype>
|
||||
</funcsynopsis>
|
||||
</refsynopsisdiv>
|
||||
|
||||
<refsect1>
|
||||
<title>Arguments</title>
|
||||
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term><parameter>fd</parameter></term>
|
||||
<listitem>
|
||||
<para>&fd;</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><parameter>request</parameter></term>
|
||||
<listitem>
|
||||
<para>VIDIOC_SUBDEV_G_FRAME_INTERVAL, VIDIOC_SUBDEV_S_FRAME_INTERVAL</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><parameter>argp</parameter></term>
|
||||
<listitem>
|
||||
<para></para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</refsect1>
|
||||
|
||||
<refsect1>
|
||||
<title>Description</title>
|
||||
|
||||
<note>
|
||||
<title>Experimental</title>
|
||||
<para>This is an <link linkend="experimental">experimental</link>
|
||||
interface and may change in the future.</para>
|
||||
</note>
|
||||
|
||||
<para>These ioctls are used to get and set the frame interval at specific
|
||||
subdev pads in the image pipeline. The frame interval only makes sense for
|
||||
sub-devices that can control the frame period on their own. This includes,
|
||||
for instance, image sensors and TV tuners. Sub-devices that don't support
|
||||
frame intervals must not implement these ioctls.</para>
|
||||
|
||||
<para>To retrieve the current frame interval applications set the
|
||||
<structfield>pad</structfield> field of a &v4l2-subdev-frame-interval; to
|
||||
the desired pad number as reported by the media controller API. When they
|
||||
call the <constant>VIDIOC_SUBDEV_G_FRAME_INTERVAL</constant> ioctl with a
|
||||
pointer to this structure the driver fills the members of the
|
||||
<structfield>interval</structfield> field.</para>
|
||||
|
||||
<para>To change the current frame interval applications set both the
|
||||
<structfield>pad</structfield> field and all members of the
|
||||
<structfield>interval</structfield> field. When they call the
|
||||
<constant>VIDIOC_SUBDEV_S_FRAME_INTERVAL</constant> ioctl with a pointer to
|
||||
this structure the driver verifies the requested interval, adjusts it based
|
||||
on the hardware capabilities and configures the device. Upon return the
|
||||
&v4l2-subdev-frame-interval; contains the current frame interval as would be
|
||||
returned by a <constant>VIDIOC_SUBDEV_G_FRAME_INTERVAL</constant> call.
|
||||
</para>
|
||||
|
||||
<para>Drivers must not return an error solely because the requested interval
|
||||
doesn't match the device capabilities. They must instead modify the interval
|
||||
to match what the hardware can provide. The modified interval should be as
|
||||
close as possible to the original request.</para>
|
||||
|
||||
<para>Sub-devices that support the frame interval ioctls should implement
|
||||
them on a single pad only. Their behaviour when supported on multiple pads
|
||||
of the same sub-device is not defined.</para>
|
||||
|
||||
<table pgwide="1" frame="none" id="v4l2-subdev-frame-interval">
|
||||
<title>struct <structname>v4l2_subdev_frame_interval</structname></title>
|
||||
<tgroup cols="3">
|
||||
&cs-str;
|
||||
<tbody valign="top">
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>pad</structfield></entry>
|
||||
<entry>Pad number as reported by the media controller API.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>&v4l2-fract;</entry>
|
||||
<entry><structfield>interval</structfield></entry>
|
||||
<entry>Period, in seconds, between consecutive video frames.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>__u32</entry>
|
||||
<entry><structfield>reserved</structfield>[9]</entry>
|
||||
<entry>Reserved for future extensions. Applications and drivers must
|
||||
set the array to zero.</entry>
|
||||
</row>
|
||||
</tbody>
|
||||
</tgroup>
|
||||
</table>
|
||||
</refsect1>
|
||||
|
||||
<refsect1>
|
||||
&return-value;
|
||||
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term><errorcode>EBUSY</errorcode></term>
|
||||
<listitem>
|
||||
<para>The frame interval can't be changed because the pad is currently
|
||||
busy. This can be caused, for instance, by an active video stream on
|
||||
the pad. The ioctl must not be retried without performing another
|
||||
action to fix the problem first. Only returned by
|
||||
<constant>VIDIOC_SUBDEV_S_FRAME_INTERVAL</constant></para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term><errorcode>EINVAL</errorcode></term>
|
||||
<listitem>
|
||||
<para>The &v4l2-subdev-frame-interval; <structfield>pad</structfield>
|
||||
references a non-existing pad, or the pad doesn't support frame
|
||||
intervals.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
|
@ -232,6 +232,22 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
|
|||
return v4l2_subdev_call(sd, pad, enum_frame_size, subdev_fh,
|
||||
fse);
|
||||
}
|
||||
|
||||
case VIDIOC_SUBDEV_G_FRAME_INTERVAL:
|
||||
return v4l2_subdev_call(sd, video, g_frame_interval, arg);
|
||||
|
||||
case VIDIOC_SUBDEV_S_FRAME_INTERVAL:
|
||||
return v4l2_subdev_call(sd, video, s_frame_interval, arg);
|
||||
|
||||
case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: {
|
||||
struct v4l2_subdev_frame_interval_enum *fie = arg;
|
||||
|
||||
if (fie->pad >= sd->entity.num_pads)
|
||||
return -EINVAL;
|
||||
|
||||
return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh,
|
||||
fie);
|
||||
}
|
||||
#endif
|
||||
default:
|
||||
return -ENOIOCTLCMD;
|
||||
|
|
|
|||
|
|
@ -80,11 +80,47 @@ struct v4l2_subdev_frame_size_enum {
|
|||
__u32 reserved[9];
|
||||
};
|
||||
|
||||
/**
|
||||
* struct v4l2_subdev_frame_interval - Pad-level frame rate
|
||||
* @pad: pad number, as reported by the media API
|
||||
* @interval: frame interval in seconds
|
||||
*/
|
||||
struct v4l2_subdev_frame_interval {
|
||||
__u32 pad;
|
||||
struct v4l2_fract interval;
|
||||
__u32 reserved[9];
|
||||
};
|
||||
|
||||
/**
|
||||
* struct v4l2_subdev_frame_interval_enum - Frame interval enumeration
|
||||
* @pad: pad number, as reported by the media API
|
||||
* @index: frame interval index during enumeration
|
||||
* @code: format code (from enum v4l2_mbus_pixelcode)
|
||||
* @width: frame width in pixels
|
||||
* @height: frame height in pixels
|
||||
* @interval: frame interval in seconds
|
||||
*/
|
||||
struct v4l2_subdev_frame_interval_enum {
|
||||
__u32 index;
|
||||
__u32 pad;
|
||||
__u32 code;
|
||||
__u32 width;
|
||||
__u32 height;
|
||||
struct v4l2_fract interval;
|
||||
__u32 reserved[9];
|
||||
};
|
||||
|
||||
#define VIDIOC_SUBDEV_G_FMT _IOWR('V', 4, struct v4l2_subdev_format)
|
||||
#define VIDIOC_SUBDEV_S_FMT _IOWR('V', 5, struct v4l2_subdev_format)
|
||||
#define VIDIOC_SUBDEV_G_FRAME_INTERVAL \
|
||||
_IOWR('V', 21, struct v4l2_subdev_frame_interval)
|
||||
#define VIDIOC_SUBDEV_S_FRAME_INTERVAL \
|
||||
_IOWR('V', 22, struct v4l2_subdev_frame_interval)
|
||||
#define VIDIOC_SUBDEV_ENUM_MBUS_CODE \
|
||||
_IOWR('V', 2, struct v4l2_subdev_mbus_code_enum)
|
||||
#define VIDIOC_SUBDEV_ENUM_FRAME_SIZE \
|
||||
_IOWR('V', 74, struct v4l2_subdev_frame_size_enum)
|
||||
#define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \
|
||||
_IOWR('V', 75, struct v4l2_subdev_frame_interval_enum)
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -268,6 +268,10 @@ struct v4l2_subdev_video_ops {
|
|||
int (*s_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop);
|
||||
int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
|
||||
int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
|
||||
int (*g_frame_interval)(struct v4l2_subdev *sd,
|
||||
struct v4l2_subdev_frame_interval *interval);
|
||||
int (*s_frame_interval)(struct v4l2_subdev *sd,
|
||||
struct v4l2_subdev_frame_interval *interval);
|
||||
int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize);
|
||||
int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival);
|
||||
int (*enum_dv_presets) (struct v4l2_subdev *sd,
|
||||
|
|
@ -420,6 +424,9 @@ struct v4l2_subdev_pad_ops {
|
|||
int (*enum_frame_size)(struct v4l2_subdev *sd,
|
||||
struct v4l2_subdev_fh *fh,
|
||||
struct v4l2_subdev_frame_size_enum *fse);
|
||||
int (*enum_frame_interval)(struct v4l2_subdev *sd,
|
||||
struct v4l2_subdev_fh *fh,
|
||||
struct v4l2_subdev_frame_interval_enum *fie);
|
||||
int (*get_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
|
||||
struct v4l2_subdev_format *format);
|
||||
int (*set_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче