header can be used to get the timings of the formats in the <xref linkend="cea861" /> and
<xref linkend="vesadmt" /> standards.
</para>
- </listitem>
- <listitem>
- <para>DV Presets: Digital Video (DV) presets (<emphasis role="bold">deprecated</emphasis>).
- These are IDs representing a
-video timing at the input/output. Presets are pre-defined timings implemented
-by the hardware according to video standards. A __u32 data type is used to represent
-a preset unlike the bit mask that is used in &v4l2-std-id; allowing future extensions
-to support as many different presets as needed. This API is deprecated in favor of the DV Timings
-API.</para>
</listitem>
</itemizedlist>
<para>To enumerate and query the attributes of the DV timings supported by a device,
&VIDIOC-S-DV-TIMINGS; ioctl and to get current DV timings they use the
&VIDIOC-G-DV-TIMINGS; ioctl. To detect the DV timings as seen by the video receiver applications
use the &VIDIOC-QUERY-DV-TIMINGS; ioctl.</para>
- <para>To enumerate and query the attributes of DV presets supported by a device,
-applications use the &VIDIOC-ENUM-DV-PRESETS; ioctl. To get the current DV preset,
-applications use the &VIDIOC-G-DV-PRESET; ioctl and to set a preset they use the
-&VIDIOC-S-DV-PRESET; ioctl. To detect the preset as seen by the video receiver applications
-use the &VIDIOC-QUERY-DV-PRESET; ioctl.</para>
<para>Applications can make use of the <xref linkend="input-capabilities" /> and
<xref linkend="output-capabilities"/> flags to decide what ioctls are available to set the
video timings for the device.</para>
<xref linkend="extended-controls" />.</para>
</listitem>
<listitem>
- <para>&VIDIOC-G-DV-PRESET;, &VIDIOC-S-DV-PRESET;, &VIDIOC-ENUM-DV-PRESETS; and
- &VIDIOC-QUERY-DV-PRESET; ioctls. Use the DV Timings API (<xref linkend="dv-timings" />).</para>
+ <para>VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET, VIDIOC_ENUM_DV_PRESETS and
+ VIDIOC_QUERY_DV_PRESET ioctls. Use the DV Timings API (<xref linkend="dv-timings" />).</para>
</listitem>
<listitem>
<para><constant>VIDIOC_SUBDEV_G_CROP</constant> and
&sub-encoder-cmd;
&sub-enumaudio;
&sub-enumaudioout;
- &sub-enum-dv-presets;
&sub-enum-dv-timings;
&sub-enum-fmt;
&sub-enum-framesizes;
&sub-g-audioout;
&sub-g-crop;
&sub-g-ctrl;
- &sub-g-dv-preset;
&sub-g-dv-timings;
&sub-g-enc-index;
&sub-g-ext-ctrls;
&sub-querybuf;
&sub-querycap;
&sub-queryctrl;
- &sub-query-dv-preset;
&sub-query-dv-timings;
&sub-querystd;
&sub-reqbufs;
+++ /dev/null
-<refentry id="vidioc-enum-dv-presets">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_ENUM_DV_PRESETS</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_ENUM_DV_PRESETS</refname>
- <refpurpose>Enumerate supported Digital Video presets</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_dv_enum_preset *<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_ENUM_DV_PRESETS</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>This ioctl is <emphasis role="bold">deprecated</emphasis>.
- New drivers and applications should use &VIDIOC-ENUM-DV-TIMINGS; instead.
- </para>
-
- <para>To query the attributes of a DV preset, applications initialize the
-<structfield>index</structfield> field and zero the reserved array of &v4l2-dv-enum-preset;
-and call the <constant>VIDIOC_ENUM_DV_PRESETS</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 DV Presets supported,
-applications shall begin at index zero, incrementing by one until the
-driver returns <errorcode>EINVAL</errorcode>. Drivers may enumerate a
-different set of DV presets after switching the video input or
-output.</para>
-
- <table pgwide="1" frame="none" id="v4l2-dv-enum-preset">
- <title>struct <structname>v4l2_dv_enum_presets</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>index</structfield></entry>
- <entry>Number of the DV preset, set by the
-application.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>preset</structfield></entry>
- <entry>This field identifies one of the DV preset values listed in <xref linkend="v4l2-dv-presets-vals"/>.</entry>
- </row>
- <row>
- <entry>__u8</entry>
- <entry><structfield>name</structfield>[24]</entry>
- <entry>Name of the preset, a NUL-terminated ASCII string, for example: "720P-60", "1080I-60". This information is
-intended for the user.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>width</structfield></entry>
- <entry>Width of the active video in pixels for the DV preset.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>height</structfield></entry>
- <entry>Height of the active video in lines for the DV preset.</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved</structfield>[4]</entry>
- <entry>Reserved for future extensions. Drivers must set the array to zero.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-dv-presets-vals">
- <title>struct <structname>DV Presets</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>Preset</entry>
- <entry>Preset value</entry>
- <entry>Description</entry>
- </row>
- <row>
- <entry></entry>
- <entry></entry>
- <entry></entry>
- </row>
- <row>
- <entry>V4L2_DV_INVALID</entry>
- <entry>0</entry>
- <entry>Invalid preset value.</entry>
- </row>
- <row>
- <entry>V4L2_DV_480P59_94</entry>
- <entry>1</entry>
- <entry>720x480 progressive video at 59.94 fps as per BT.1362.</entry>
- </row>
- <row>
- <entry>V4L2_DV_576P50</entry>
- <entry>2</entry>
- <entry>720x576 progressive video at 50 fps as per BT.1362.</entry>
- </row>
- <row>
- <entry>V4L2_DV_720P24</entry>
- <entry>3</entry>
- <entry>1280x720 progressive video at 24 fps as per SMPTE 296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_720P25</entry>
- <entry>4</entry>
- <entry>1280x720 progressive video at 25 fps as per SMPTE 296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_720P30</entry>
- <entry>5</entry>
- <entry>1280x720 progressive video at 30 fps as per SMPTE 296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_720P50</entry>
- <entry>6</entry>
- <entry>1280x720 progressive video at 50 fps as per SMPTE 296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_720P59_94</entry>
- <entry>7</entry>
- <entry>1280x720 progressive video at 59.94 fps as per SMPTE 274M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_720P60</entry>
- <entry>8</entry>
- <entry>1280x720 progressive video at 60 fps as per SMPTE 274M/296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080I29_97</entry>
- <entry>9</entry>
- <entry>1920x1080 interlaced video at 29.97 fps as per BT.1120/SMPTE 274M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080I30</entry>
- <entry>10</entry>
- <entry>1920x1080 interlaced video at 30 fps as per BT.1120/SMPTE 274M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080I25</entry>
- <entry>11</entry>
- <entry>1920x1080 interlaced video at 25 fps as per BT.1120.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080I50</entry>
- <entry>12</entry>
- <entry>1920x1080 interlaced video at 50 fps as per SMPTE 296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080I60</entry>
- <entry>13</entry>
- <entry>1920x1080 interlaced video at 60 fps as per SMPTE 296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080P24</entry>
- <entry>14</entry>
- <entry>1920x1080 progressive video at 24 fps as per SMPTE 296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080P25</entry>
- <entry>15</entry>
- <entry>1920x1080 progressive video at 25 fps as per SMPTE 296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080P30</entry>
- <entry>16</entry>
- <entry>1920x1080 progressive video at 30 fps as per SMPTE 296M.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080P50</entry>
- <entry>17</entry>
- <entry>1920x1080 progressive video at 50 fps as per BT.1120.</entry>
- </row>
- <row>
- <entry>V4L2_DV_1080P60</entry>
- <entry>18</entry>
- <entry>1920x1080 progressive video at 60 fps as per BT.1120.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>The &v4l2-dv-enum-preset; <structfield>index</structfield>
-is out of bounds.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ENODATA</errorcode></term>
- <listitem>
- <para>Digital video presets are not supported for this input or output.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
- <row>
- <entry><constant>V4L2_IN_CAP_PRESETS</constant></entry>
- <entry>0x00000001</entry>
- <entry>This input supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry>
- </row>
<row>
<entry><constant>V4L2_IN_CAP_DV_TIMINGS</constant></entry>
<entry>0x00000002</entry>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
- <row>
- <entry><constant>V4L2_OUT_CAP_PRESETS</constant></entry>
- <entry>0x00000001</entry>
- <entry>This output supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry>
- </row>
<row>
<entry><constant>V4L2_OUT_CAP_DV_TIMINGS</constant></entry>
<entry>0x00000002</entry>
+++ /dev/null
-<refentry id="vidioc-g-dv-preset">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_G_DV_PRESET</refname>
- <refname>VIDIOC_S_DV_PRESET</refname>
- <refpurpose>Query or select the DV preset of the current input or output</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_dv_preset *<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_G_DV_PRESET, VIDIOC_S_DV_PRESET</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>These ioctls are <emphasis role="bold">deprecated</emphasis>.
- New drivers and applications should use &VIDIOC-G-DV-TIMINGS; and &VIDIOC-S-DV-TIMINGS;
- instead.
- </para>
-
- <para>To query and select the current DV preset, applications
-use the <constant>VIDIOC_G_DV_PRESET</constant> and <constant>VIDIOC_S_DV_PRESET</constant>
-ioctls which take a pointer to a &v4l2-dv-preset; type as argument.
-Applications must zero the reserved array in &v4l2-dv-preset;.
-<constant>VIDIOC_G_DV_PRESET</constant> returns a dv preset in the field
-<structfield>preset</structfield> of &v4l2-dv-preset;.</para>
-
- <para><constant>VIDIOC_S_DV_PRESET</constant> accepts a pointer to a &v4l2-dv-preset;
-that has the preset value to be set. Applications must zero the reserved array in &v4l2-dv-preset;.
-If the preset is not supported, it returns an &EINVAL; </para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>EINVAL</errorcode></term>
- <listitem>
- <para>This ioctl is not supported, or the
-<constant>VIDIOC_S_DV_PRESET</constant>,<constant>VIDIOC_S_DV_PRESET</constant> parameter was unsuitable.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>ENODATA</errorcode></term>
- <listitem>
- <para>Digital video presets are not supported for this input or output.</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><errorcode>EBUSY</errorcode></term>
- <listitem>
- <para>The device is busy and therefore can not change the preset.</para>
- </listitem>
- </varlistentry>
- </variablelist>
-
- <table pgwide="1" frame="none" id="v4l2-dv-preset">
- <title>struct <structname>v4l2_dv_preset</structname></title>
- <tgroup cols="3">
- &cs-str;
- <tbody valign="top">
- <row>
- <entry>__u32</entry>
- <entry><structfield>preset</structfield></entry>
- <entry>Preset value to represent the digital video timings</entry>
- </row>
- <row>
- <entry>__u32</entry>
- <entry><structfield>reserved[4]</structfield></entry>
- <entry>Reserved fields for future use</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-</refentry>
+++ /dev/null
-<refentry id="vidioc-query-dv-preset">
- <refmeta>
- <refentrytitle>ioctl VIDIOC_QUERY_DV_PRESET</refentrytitle>
- &manvol;
- </refmeta>
-
- <refnamediv>
- <refname>VIDIOC_QUERY_DV_PRESET</refname>
- <refpurpose>Sense the DV preset received by the current
-input</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_dv_preset *<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_QUERY_DV_PRESET</para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term><parameter>argp</parameter></term>
- <listitem>
- <para></para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Description</title>
-
- <para>This ioctl is <emphasis role="bold">deprecated</emphasis>.
- New drivers and applications should use &VIDIOC-QUERY-DV-TIMINGS; instead.
- </para>
-
- <para>The hardware may be able to detect the current DV preset
-automatically, similar to sensing the video standard. To do so, applications
-call <constant> VIDIOC_QUERY_DV_PRESET</constant> with a pointer to a
-&v4l2-dv-preset; type. Once the hardware detects a preset, that preset is
-returned in the preset field of &v4l2-dv-preset;. If the preset could not be
-detected because there was no signal, or the signal was unreliable, or the
-signal did not map to a supported preset, then the value V4L2_DV_INVALID is
-returned.</para>
- </refsect1>
-
- <refsect1>
- &return-value;
-
- <variablelist>
- <varlistentry>
- <term><errorcode>ENODATA</errorcode></term>
- <listitem>
- <para>Digital video presets are not supported for this input or output.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-</refentry>
projects / openwrt / staging / blogic.git / commitdiff