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Diffstat (limited to 'Documentation/DocBook/media/v4l/vidioc-enuminput.xml')
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diff --git a/Documentation/DocBook/media/v4l/vidioc-enuminput.xml b/Documentation/DocBook/media/v4l/vidioc-enuminput.xml deleted file mode 100644 index 603fecef9083..000000000000 --- a/Documentation/DocBook/media/v4l/vidioc-enuminput.xml +++ /dev/null @@ -1,316 +0,0 @@ -<refentry id="vidioc-enuminput"> - <refmeta> - <refentrytitle>ioctl VIDIOC_ENUMINPUT</refentrytitle> - &manvol; - </refmeta> - - <refnamediv> - <refname>VIDIOC_ENUMINPUT</refname> - <refpurpose>Enumerate video inputs</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_input -*<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_ENUMINPUT</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>argp</parameter></term> - <listitem> - <para></para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Description</title> - - <para>To query the attributes of a video input applications -initialize the <structfield>index</structfield> field of &v4l2-input; -and call the <constant>VIDIOC_ENUMINPUT</constant> ioctl with a -pointer to this structure. Drivers fill the rest of the structure or -return an &EINVAL; when the index is out of bounds. To enumerate all -inputs applications shall begin at index zero, incrementing by one -until the driver returns <errorcode>EINVAL</errorcode>.</para> - - <table frame="none" pgwide="1" id="v4l2-input"> - <title>struct <structname>v4l2_input</structname></title> - <tgroup cols="3"> - &cs-str; - <tbody valign="top"> - <row> - <entry>__u32</entry> - <entry><structfield>index</structfield></entry> - <entry>Identifies the input, set by the -application.</entry> - </row> - <row> - <entry>__u8</entry> - <entry><structfield>name</structfield>[32]</entry> - <entry>Name of the video input, a NUL-terminated ASCII -string, for example: "Vin (Composite 2)". This information is intended -for the user, preferably the connector label on the device itself.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>type</structfield></entry> - <entry>Type of the input, see <xref - linkend="input-type" />.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>audioset</structfield></entry> - <entry><para>Drivers can enumerate up to 32 video and -audio inputs. This field shows which audio inputs were selectable as -audio source if this was the currently selected video input. It is a -bit mask. The LSB corresponds to audio input 0, the MSB to input 31. -Any number of bits can be set, or none.</para><para>When the driver -does not enumerate audio inputs no bits must be set. Applications -shall not interpret this as lack of audio support. Some drivers -automatically select audio sources and do not enumerate them since -there is no choice anyway.</para><para>For details on audio inputs and -how to select the current input see <xref - linkend="audio" />.</para></entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>tuner</structfield></entry> - <entry>Capture devices can have zero or more tuners (RF -demodulators). When the <structfield>type</structfield> is set to -<constant>V4L2_INPUT_TYPE_TUNER</constant> this is an RF connector and -this field identifies the tuner. It corresponds to -&v4l2-tuner; field <structfield>index</structfield>. For details on -tuners see <xref linkend="tuner" />.</entry> - </row> - <row> - <entry>&v4l2-std-id;</entry> - <entry><structfield>std</structfield></entry> - <entry>Every video input supports one or more different -video standards. This field is a set of all supported standards. For -details on video standards and how to switch see <xref -linkend="standard" />.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>status</structfield></entry> - <entry>This field provides status information about the -input. See <xref linkend="input-status" /> for flags. -With the exception of the sensor orientation bits <structfield>status</structfield> is only valid when this is the -current input.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>capabilities</structfield></entry> - <entry>This field provides capabilities for the -input. See <xref linkend="input-capabilities" /> for flags.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>reserved</structfield>[3]</entry> - <entry>Reserved for future extensions. Drivers must set -the array to zero.</entry> - </row> - </tbody> - </tgroup> - </table> - - <table frame="none" pgwide="1" id="input-type"> - <title>Input Types</title> - <tgroup cols="3"> - &cs-def; - <tbody valign="top"> - <row> - <entry><constant>V4L2_INPUT_TYPE_TUNER</constant></entry> - <entry>1</entry> - <entry>This input uses a tuner (RF demodulator).</entry> - </row> - <row> - <entry><constant>V4L2_INPUT_TYPE_CAMERA</constant></entry> - <entry>2</entry> - <entry>Analog baseband input, for example CVBS / -Composite Video, S-Video, RGB.</entry> - </row> - </tbody> - </tgroup> - </table> - - <!-- Status flags based on proposal by Mark McClelland, -video4linux-list@redhat.com on 18 Oct 2002, subject "Re: [V4L] Re: -v4l2 api". "Why are some of them inverted? So that the driver doesn't -have to lie about the status in cases where it can't tell one way or -the other. Plus, a status of zero would generally mean that everything -is OK." --> - - <table frame="none" pgwide="1" id="input-status"> - <title>Input Status Flags</title> - <tgroup cols="3"> - <colspec colname="c1" /> - <colspec colname="c2" align="center" /> - <colspec colname="c3" /> - <spanspec namest="c1" nameend="c3" spanname="hspan" - align="left" /> - <tbody valign="top"> - <row> - <entry spanname="hspan">General</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_NO_POWER</constant></entry> - <entry>0x00000001</entry> - <entry>Attached device is off.</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_NO_SIGNAL</constant></entry> - <entry>0x00000002</entry> - <entry></entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_NO_COLOR</constant></entry> - <entry>0x00000004</entry> - <entry>The hardware supports color decoding, but does not -detect color modulation in the signal.</entry> - </row> - <row> - <entry spanname="hspan">Sensor Orientation</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_HFLIP</constant></entry> - <entry>0x00000010</entry> - <entry>The input is connected to a device that produces a signal -that is flipped horizontally and does not correct this before passing the -signal to userspace.</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_VFLIP</constant></entry> - <entry>0x00000020</entry> - <entry>The input is connected to a device that produces a signal -that is flipped vertically and does not correct this before passing the -signal to userspace. Note that a 180 degree rotation is the same as HFLIP | VFLIP</entry> - </row> - <row> - <entry spanname="hspan">Analog Video</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_NO_H_LOCK</constant></entry> - <entry>0x00000100</entry> - <entry>No horizontal sync lock.</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_COLOR_KILL</constant></entry> - <entry>0x00000200</entry> - <entry>A color killer circuit automatically disables color -decoding when it detects no color modulation. When this flag is set -the color killer is enabled <emphasis>and</emphasis> has shut off -color decoding.</entry> - </row> - <row> - <entry spanname="hspan">Digital Video</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_NO_SYNC</constant></entry> - <entry>0x00010000</entry> - <entry>No synchronization lock.</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_NO_EQU</constant></entry> - <entry>0x00020000</entry> - <entry>No equalizer lock.</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_NO_CARRIER</constant></entry> - <entry>0x00040000</entry> - <entry>Carrier recovery failed.</entry> - </row> - <row> - <entry spanname="hspan">VCR and Set-Top Box</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_MACROVISION</constant></entry> - <entry>0x01000000</entry> - <entry>Macrovision is an analog copy prevention system -mangling the video signal to confuse video recorders. When this -flag is set Macrovision has been detected.</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_NO_ACCESS</constant></entry> - <entry>0x02000000</entry> - <entry>Conditional access denied.</entry> - </row> - <row> - <entry><constant>V4L2_IN_ST_VTR</constant></entry> - <entry>0x04000000</entry> - <entry>VTR time constant. [?]</entry> - </row> - </tbody> - </tgroup> - </table> - - <!-- Capability flags based on video timings RFC by Muralidharan -Karicheri, titled RFC (v1.2): V4L - Support for video timings at the -input/output interface to linux-media@vger.kernel.org on 19 Oct 2009. - --> - <table frame="none" pgwide="1" id="input-capabilities"> - <title>Input capabilities</title> - <tgroup cols="3"> - &cs-def; - <tbody valign="top"> - <row> - <entry><constant>V4L2_IN_CAP_DV_TIMINGS</constant></entry> - <entry>0x00000002</entry> - <entry>This input supports setting video timings by using VIDIOC_S_DV_TIMINGS.</entry> - </row> - <row> - <entry><constant>V4L2_IN_CAP_STD</constant></entry> - <entry>0x00000004</entry> - <entry>This input supports setting the TV standard by using VIDIOC_S_STD.</entry> - </row> - <row> - <entry><constant>V4L2_IN_CAP_NATIVE_SIZE</constant></entry> - <entry>0x00000008</entry> - <entry>This input supports setting the native size using - the <constant>V4L2_SEL_TGT_NATIVE_SIZE</constant> - selection target, see <xref - linkend="v4l2-selections-common"/>.</entry> - </row> - </tbody> - </tgroup> - </table> - </refsect1> - - <refsect1> - &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>The &v4l2-input; <structfield>index</structfield> is -out of bounds.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> -</refentry> |