mirror of https://gitee.com/openkylin/linux.git
[media] v4l: Move event documentation from SUBSCRIBE_EVENT to DQEVENT
Move documentation of structures used in DQEVENT from SUBSCRIBE_EVENT to DQEVENT. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sakari Ailus
Mauro Carvalho Chehab
parent
31ee95ec2d
commit
ffd638e0e6
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@ -135,6 +135,113 @@
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</tgroup>
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</table>
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<table frame="none" pgwide="1" id="v4l2-event-vsync">
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<title>struct <structname>v4l2_event_vsync</structname></title>
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<tgroup cols="3">
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&cs-str;
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<tbody valign="top">
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<row>
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<entry>__u8</entry>
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<entry><structfield>field</structfield></entry>
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<entry>The upcoming field. See &v4l2-field;.</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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<table frame="none" pgwide="1" id="v4l2-event-ctrl">
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<title>struct <structname>v4l2_event_ctrl</structname></title>
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<tgroup cols="4">
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&cs-str;
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<tbody valign="top">
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<row>
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<entry>__u32</entry>
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<entry><structfield>changes</structfield></entry>
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<entry></entry>
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<entry>A bitmask that tells what has changed. See <xref linkend="changes-flags" />.</entry>
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</row>
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<row>
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<entry>__u32</entry>
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<entry><structfield>type</structfield></entry>
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<entry></entry>
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<entry>The type of the control. See &v4l2-ctrl-type;.</entry>
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</row>
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<row>
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<entry>union (anonymous)</entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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</row>
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<row>
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<entry></entry>
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<entry>__s32</entry>
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<entry><structfield>value</structfield></entry>
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<entry>The 32-bit value of the control for 32-bit control types.
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This is 0 for string controls since the value of a string
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cannot be passed using &VIDIOC-DQEVENT;.</entry>
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</row>
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<row>
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<entry></entry>
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<entry>__s64</entry>
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<entry><structfield>value64</structfield></entry>
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<entry>The 64-bit value of the control for 64-bit control types.</entry>
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</row>
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<row>
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<entry>__u32</entry>
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<entry><structfield>flags</structfield></entry>
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<entry></entry>
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<entry>The control flags. See <xref linkend="control-flags" />.</entry>
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</row>
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<row>
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<entry>__s32</entry>
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<entry><structfield>minimum</structfield></entry>
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<entry></entry>
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<entry>The minimum value of the control. See &v4l2-queryctrl;.</entry>
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</row>
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<row>
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<entry>__s32</entry>
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<entry><structfield>maximum</structfield></entry>
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<entry></entry>
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<entry>The maximum value of the control. See &v4l2-queryctrl;.</entry>
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</row>
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<row>
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<entry>__s32</entry>
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<entry><structfield>step</structfield></entry>
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<entry></entry>
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<entry>The step value of the control. See &v4l2-queryctrl;.</entry>
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</row>
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<row>
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<entry>__s32</entry>
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<entry><structfield>default_value</structfield></entry>
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<entry></entry>
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<entry>The default value value of the control. See &v4l2-queryctrl;.</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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<table pgwide="1" frame="none" id="changes-flags">
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<title>Changes</title>
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<tgroup cols="3">
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&cs-def;
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<tbody valign="top">
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<row>
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<entry><constant>V4L2_EVENT_CTRL_CH_VALUE</constant></entry>
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<entry>0x0001</entry>
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<entry>This control event was triggered because the value of the control
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changed. Special case: if a button control is pressed, then this
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event is sent as well, even though there is not explicit value
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associated with a button control.</entry>
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</row>
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<row>
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<entry><constant>V4L2_EVENT_CTRL_CH_FLAGS</constant></entry>
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<entry>0x0002</entry>
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<entry>This control event was triggered because the control flags
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changed.</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</refsect1>
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<refsect1>
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&return-value;
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@ -183,113 +183,6 @@
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</tgroup>
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</table>
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<table frame="none" pgwide="1" id="v4l2-event-vsync">
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<title>struct <structname>v4l2_event_vsync</structname></title>
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<tgroup cols="3">
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&cs-str;
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<tbody valign="top">
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<row>
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<entry>__u8</entry>
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<entry><structfield>field</structfield></entry>
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<entry>The upcoming field. See &v4l2-field;.</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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<table frame="none" pgwide="1" id="v4l2-event-ctrl">
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<title>struct <structname>v4l2_event_ctrl</structname></title>
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<tgroup cols="4">
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&cs-str;
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<tbody valign="top">
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<row>
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<entry>__u32</entry>
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<entry><structfield>changes</structfield></entry>
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<entry></entry>
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<entry>A bitmask that tells what has changed. See <xref linkend="changes-flags" />.</entry>
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</row>
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<row>
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<entry>__u32</entry>
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<entry><structfield>type</structfield></entry>
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<entry></entry>
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<entry>The type of the control. See &v4l2-ctrl-type;.</entry>
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</row>
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<row>
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<entry>union (anonymous)</entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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</row>
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<row>
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<entry></entry>
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<entry>__s32</entry>
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<entry><structfield>value</structfield></entry>
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<entry>The 32-bit value of the control for 32-bit control types.
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This is 0 for string controls since the value of a string
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cannot be passed using &VIDIOC-DQEVENT;.</entry>
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</row>
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<row>
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<entry></entry>
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<entry>__s64</entry>
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<entry><structfield>value64</structfield></entry>
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<entry>The 64-bit value of the control for 64-bit control types.</entry>
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</row>
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<row>
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<entry>__u32</entry>
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<entry><structfield>flags</structfield></entry>
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<entry></entry>
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<entry>The control flags. See <xref linkend="control-flags" />.</entry>
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</row>
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<row>
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<entry>__s32</entry>
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<entry><structfield>minimum</structfield></entry>
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<entry></entry>
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<entry>The minimum value of the control. See &v4l2-queryctrl;.</entry>
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</row>
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<row>
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<entry>__s32</entry>
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<entry><structfield>maximum</structfield></entry>
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<entry></entry>
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<entry>The maximum value of the control. See &v4l2-queryctrl;.</entry>
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</row>
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<row>
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<entry>__s32</entry>
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<entry><structfield>step</structfield></entry>
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<entry></entry>
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<entry>The step value of the control. See &v4l2-queryctrl;.</entry>
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</row>
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<row>
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<entry>__s32</entry>
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<entry><structfield>default_value</structfield></entry>
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<entry></entry>
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<entry>The default value value of the control. See &v4l2-queryctrl;.</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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<table pgwide="1" frame="none" id="changes-flags">
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<title>Changes</title>
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<tgroup cols="3">
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&cs-def;
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<tbody valign="top">
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<row>
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<entry><constant>V4L2_EVENT_CTRL_CH_VALUE</constant></entry>
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<entry>0x0001</entry>
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<entry>This control event was triggered because the value of the control
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changed. Special case: if a button control is pressed, then this
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event is sent as well, even though there is not explicit value
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associated with a button control.</entry>
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</row>
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<row>
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<entry><constant>V4L2_EVENT_CTRL_CH_FLAGS</constant></entry>
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<entry>0x0002</entry>
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<entry>This control event was triggered because the control flags
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changed.</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</refsect1>
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<refsect1>
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&return-value;
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