Hi,
Please ignore this since I found some issues with this.
I will be sending another one soon.
Murali Karicheri
Software Design Engineer
Texas Instruments Inc.
Germantown, MD 20874
phone: 301-407-9583
email: m-karicheri2@xxxxxx
>-----Original Message-----
>From: Karicheri, Muralidharan
>Sent: Wednesday, November 18, 2009 1:35 PM
>To: linux-media@xxxxxxxxxxxxxxx; hverkuil@xxxxxxxxx; mchehab@xxxxxxxxxxxxx
>Cc: davinci-linux-open-source@xxxxxxxxxxxxxxxxxxxx; Karicheri, Muralidharan
>Subject: [PATCH v2] V4L - Digital Video Timings API documentation
>
>From: Muralidharan Karicheri <m-karicheri2@xxxxxx>
>
>This patch updates the v4l2-dvb documentation for the new
>video timings API added.
>
>Signed-off-by: Muralidharan Karicheri <m-karicheri2@xxxxxx>
>---
>
>diff -uNr v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/common.xml
>v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/common.xml
>--- v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/common.xml
> 2009-11-12 09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/common.xml
> 2009-11-18 12:13:34.000000000 -0500
>@@ -716,6 +716,41 @@
> }
> </programlisting>
> </example>
>+ <section id="dv-timings">
>+ <title>Digital Video (DV) Timings</title>
>+ <para>
>+ The video standards discussed so far has been dealing with Analog TV
>and the
>+corresponding video timings. Today there are many more different hardware
>interfaces
>+such as High Definition TV interfaces (HDMI), VGA, DVI connectors etc.,
>that carries
>+video signals and there is a need to extend the API to allow settings
>video timings
>+ on these interfaces. Since it is not possible to extend the v4l2-std-id
>due to
>+the limited bits available, a new set of IOCTLs are added to set/get video
>timings at
>+the input and output:- </para><itemizedlist>
>+ <listitem>
>+ <para> DV Presets :- Digital Video (DV) presets. These are IDs
>representing a
>+video timing at the input/output. Presets can be thought of pre-defined
>timings implemented
>+by the hardware like 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 many
>+different presets as needed</para>
>+ </listitem>
>+ <listitem>
>+ <para> Custom DV Timings :- This will allow applications to define a
>more detailed
>+custom video timings at the interface. This includes parameters such as
>width, height,
>+ polarities, frontporch, backporch etc.
>+ </para>
>+ </listitem>
>+ </itemizedlist>
>+ <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,
>+ application use the &VIDIOC-G-DV-PRESET; ioctl and to Set a preset it
>uses the
>+ &VIDIOC-S-DV-PRESET; ioctl.</para>
>+ <para> To Set a Custom DV timings at the device, applications use the
>+ &VIDIOC-S-DV-TIMINGS; ioctl and to Get current Custom DV timings, it uses
>the
>+ &VIDIOC-G-DV-TIMINGS; ioctl.</para>
>+ <para> Applications can make use of the <xref linkend="input-
>capabilities" /> and
>+<xref linkend="output-capabilities"/> flags to decide what ioctls
>available to set the
>+video timings at the device.</para>
>+ </section>
> </section>
>
> &sub-controls;
>diff -uNr v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/v4l2.xml
>v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/v4l2.xml
>--- v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/v4l2.xml 2009-11-
>12 09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/v4l2.xml
> 2009-11-18 12:13:57.000000000 -0500
>@@ -416,6 +416,10 @@
> &sub-enum-frameintervals;
> &sub-enuminput;
> &sub-enumoutput;
>+ &sub-enum-dv-presets;
>+ &sub-g-dv-preset;
>+ &sub-query-dv-preset;
>+ &sub-g-dv-timings;
> &sub-enumstd;
> &sub-g-audio;
> &sub-g-audioout;
>diff -uNr v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-enum-
>dv-presets.xml v4l-dvb-
>aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-enum-dv-presets.xml
>--- v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-enum-dv-
>presets.xml 1969-12-31 19:00:00.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-enum-
>dv-presets.xml 2009-11-18 12:14:25.000000000 -0500
>@@ -0,0 +1,167 @@
>+<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>To query the attributes of a DV preset, applications initialize
>the
>+<structfield>index</structfield> field 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 identify one of the DV Preset value listed
>below</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 in pixels of the DV preset.</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>height</structfield></entry>
>+ <entry>Height in lines of 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>
>+
>+ <para><programlisting>
>+#define V4L2_DV_PRESET_BASE 0x00000000
>+#define V4L2_DV_INVALID (V4L2_DV_PRESET_BASE + 0)
>+/* BT.1362 */
>+#define V4L2_DV_480P59_94 (V4L2_DV_PRESET_BASE + 1)
>+/* BT.1362 */
>+#define V4L2_DV_576P50 (V4L2_DV_PRESET_BASE + 2)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P24 (V4L2_DV_PRESET_BASE + 3)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P25 (V4L2_DV_PRESET_BASE + 4)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P30 (V4L2_DV_PRESET_BASE + 5)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P50 (V4L2_DV_PRESET_BASE + 6)
>+/* SMPTE 274M */
>+#define V4L2_DV_720P59_94 (V4L2_DV_PRESET_BASE + 7)
>+/* SMPTE 274M/296M */
>+#define V4L2_DV_720P60 (V4L2_DV_PRESET_BASE + 8)
>+/* BT.1120/ SMPTE 274M */
>+#define V4L2_DV_1080I29_97 (V4L2_DV_PRESET_BASE + 9)
>+/* BT.1120/ SMPTE 274M */
>+#define V4L2_DV_1080I30 (V4L2_DV_PRESET_BASE + 10)
>+/* BT.1120 */
>+#define V4L2_DV_1080I25 (V4L2_DV_PRESET_BASE + 11)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080I50 (V4L2_DV_PRESET_BASE + 12)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080I60 (V4L2_DV_PRESET_BASE + 13)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P24 (V4L2_DV_PRESET_BASE + 14)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P25 (V4L2_DV_PRESET_BASE + 15)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P30 (V4L2_DV_PRESET_BASE + 16)
>+/* BT.1120 */
>+#define V4L2_DV_1080P50 (V4L2_DV_PRESET_BASE + 17)
>+/* BT.1120 */
>+#define V4L2_DV_1080P60 (V4L2_DV_PRESET_BASE + 18)
>+</programlisting> </para>
>+ </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>
>+ </variablelist>
>+ </refsect1>
>+</refentry>
>+
>+<!--
>+Local Variables:
>+mode: sgml
>+sgml-parent-document: "v4l2.sgml"
>+indent-tabs-mode: nil
>+End:
>+-->
>diff -uNr v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-
>enuminput.xml v4l-dvb-
>aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-enuminput.xml
>--- v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-
>enuminput.xml 2009-11-12 09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-
>enuminput.xml 2009-11-18 12:14:54.000000000 -0500
>@@ -124,7 +124,13 @@
> </row>
> <row>
> <entry>__u32</entry>
>- <entry><structfield>reserved</structfield>[4]</entry>
>+ <entry><structfield>capabilities</structfield></entry>
>+ <entry>This field provides capabilities that exists at 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>
>@@ -261,6 +267,34 @@
> </tbody>
> </tgroup>
> </table>
>+
>+ <!-- Capabilities 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@xxxxxxxxxxxxxxx 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_PRESETS</constant></entry>
>+ <entry>0x00000001</entry>
>+ <entry>This input supports setting DV PRESET using
>VIDIOC_S_DV_PRESET</entry>
>+ </row>
>+ <row>
>+ <entry><constant>V4L2_OUT_CAP_CUSTOM_TIMINGS</constant></entry>
>+ <entry>0x00000002</entry>
>+ <entry>This input supports setting Custom timings using
>VIDIOC_S_DV_TIMINGS</entry>
>+ </row>
>+ <row>
>+ <entry><constant>V4L2_IN_CAP_STD</constant></entry>
>+ <entry>0x00000004</entry>
>+ <entry>This input supports setting standard using
>VIDIOC_S_STD</entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
> </refsect1>
>
> <refsect1>
>diff -uNr v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-
>enumoutput.xml v4l-dvb-
>aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-enumoutput.xml
>--- v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-
>enumoutput.xml 2009-11-12 09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-
>enumoutput.xml 2009-11-18 12:15:09.000000000 -0500
>@@ -114,7 +114,13 @@
> </row>
> <row>
> <entry>__u32</entry>
>- <entry><structfield>reserved</structfield>[4]</entry>
>+ <entry><structfield>capabilities</structfield></entry>
>+ <entry>This field provides capabilities that exists at the
>+output. See <xref linkend="output-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>
>@@ -147,6 +153,34 @@
> </tgroup>
> </table>
>
>+ <!-- Capabilities 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@xxxxxxxxxxxxxxx on 19 Oct 2009.
>+ -->
>+ <table frame="none" pgwide="1" id="output-capabilities">
>+ <title>Output capabilities</title>
>+ <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 PRESET using
>VIDIOC_S_DV_PRESET</entry>
>+ </row>
>+ <row>
>+ <entry><constant>V4L2_OUT_CAP_CUSTOM_TIMINGS</constant></entry>
>+ <entry>0x00000002</entry>
>+ <entry>This output supports setting Custom timings using
>VIDIOC_S_DV_TIMINGS</entry>
>+ </row>
>+ <row>
>+ <entry><constant>V4L2_OUT_CAP_STD</constant></entry>
>+ <entry>0x00000004</entry>
>+ <entry>This output supports setting standard using
>VIDIOC_S_STD</entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
>+
> </refsect1>
> <refsect1>
> &return-value;
>diff -uNr v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-g-dv-
>preset.xml v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-
>g-dv-preset.xml
>--- v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-g-dv-
>preset.xml 1969-12-31 19:00:00.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-g-dv-
>preset.xml 2009-11-18 12:15:31.000000000 -0500
>@@ -0,0 +1,103 @@
>+<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>&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>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.
><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. 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</cons
>tant> parameter was unsuitable.</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>
>+
>+<!--
>+Local Variables:
>+mode: sgml
>+sgml-parent-document: "v4l2.sgml"
>+indent-tabs-mode: nil
>+End:
>+-->
>diff -uNr v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-g-dv-
>timings.xml v4l-dvb-
>aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-g-dv-timings.xml
>--- v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-g-dv-
>timings.xml 1969-12-31 19:00:00.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-g-dv-
>timings.xml 2009-11-18 12:15:42.000000000 -0500
>@@ -0,0 +1,195 @@
>+<refentry id="vidioc-g-dv-timings">
>+ <refmeta>
>+ <refentrytitle>ioctl VIDIOC_G_DV_TIMINGS,
>VIDIOC_S_DV_TIMINGS</refentrytitle>
>+ &manvol;
>+ </refmeta>
>+
>+ <refnamediv>
>+ <refname>VIDIOC_G_DV_TIMINGS</refname>
>+ <refname>VIDIOC_S_DV_TIMINGS</refname>
>+ <refpurpose>Get or Set Custom DV Timings at 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>&v4l2-dv-timings;
>+*<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_TIMINGS, VIDIOC_S_DV_TIMINGS</para>
>+ </listitem>
>+ </varlistentry>
>+ <varlistentry>
>+ <term><parameter>argp</parameter></term>
>+ <listitem>
>+ <para></para>
>+ </listitem>
>+ </varlistentry>
>+ </variablelist>
>+ </refsect1>
>+
>+ <refsect1>
>+ <title>Description</title>
>+ <para>To Set Custom DV timings at the input or output, applications
>use the
>+<constant>VIDIOC_S_DV_TIMINGS</constant> ioctl and to Get the current
>custom timings,
>+applications use <constant>VIDIOC_G_DV_TIMINGS</constant> ioctl. The
>detailed timing
>+informations are filled in using the structure &v4l2-dv-timings;. These
>ioctls take
>+ a pointer to &v4l2-dv-timings; structure as argument. If the ioctl is not
>supported
>+or the timing values are not correct, driver 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_TIMINGS</constant> parameter was unsuitable.</para>
>+ </listitem>
>+ </varlistentry>
>+ </variablelist>
>+
>+ <table frame="none" pgwide="1" id="v4l2-dv-timings-type">
>+ <title>DV Timing types</title>
>+ <tgroup cols="3">
>+ &cs-def;
>+ <tbody valign="top">
>+ <row>
>+ <entry><constant>V4L2_DV_BT_656_1120</constant></entry>
>+ <entry></entry>
>+ <entry>BT.656/BT.1120 timings </entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
>+
>+
>+ <table pgwide="1" frame="none" id="v4l2-bt-timings">
>+ <title>struct <structname>v4l2_bt_timings</structname></title>
>+ <tgroup cols="3">
>+ &cs-str;
>+ <tbody valign="top">
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>width</structfield></entry>
>+ <entry>width in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>height</structfield></entry>
>+ <entry>height in lines</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>interlaced</structfield></entry>
>+ <entry>Interlaced or progressive</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>polarities</structfield></entry>
>+ <entry>Positive or negative polarity</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>pixelclock</structfield></entry>
>+ <entry>Pixel clock in HZ. Ex. 74.25MHz->74250000</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>hfrontporch</structfield></entry>
>+ <entry>Horizpontal front porch in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>hsync</structfield></entry>
>+ <entry>Horizontal Sync length in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>hbackporch</structfield></entry>
>+ <entry>Horizontal back porch in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>vfrontporch</structfield></entry>
>+ <entry>Vertical front porch in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>vsync</structfield></entry>
>+ <entry>Vertical Sync length in lines</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>vbackporch</structfield></entry>
>+ <entry>Vertical back porch in lines</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>il_vfrontporch</structfield></entry>
>+ <entry>Vertical front porch for bottom field of interlaced field
>formats</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>il_vsync</structfield></entry>
>+ <entry>Vertical sync length for bottom field of interlaced field
>formats</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>il_vbackporch</structfield></entry>
>+ <entry>Vertical back porch for bottom field of interlaced field
>formats</entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
>+
>+ <table pgwide="1" frame="none" id="v4l2-dv-timings">
>+ <title>struct <structname>v4l2_dv_timings</structname></title>
>+ <tgroup cols="3">
>+ &cs-str;
>+ <tbody valign="top">
>+ <row>
>+ <entry>&v4l2-dv-timings-type;</entry>
>+ <entry><structfield>type</structfield></entry>
>+ <entry></entry>
>+ </row>
>+ <row>
>+ <entry>union</entry>
>+ <entry><structfield>&v4l2-bt-timings; bt and
>reserved[32]</structfield></entry>
>+ <entry></entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
>+
>+ </refsect1>
>+</refentry>
>+
>+<!--
>+Local Variables:
>+mode: sgml
>+sgml-parent-document: "v4l2.sgml"
>+indent-tabs-mode: nil
>+End:
>+-->
>diff -uNr v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-
>query-dv-preset.xml v4l-dvb-
>aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-query-dv-preset.xml
>--- v4l-dvb-aba823ecaea6/linux/Documentation/DocBook/v4l/vidioc-query-dv-
>preset.xml 1969-12-31 19:00:00.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/linux/Documentation/DocBook/v4l/vidioc-query-
>dv-preset.xml 2009-11-18 12:15:53.000000000 -0500
>@@ -0,0 +1,80 @@
>+<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>&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>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 hardware detects a preset, the same is
>+returned in the preset field of &v4l2-dv-preset; When detection is not
>+possible or fails, the value V4L2_DV_INVALID is returned</para>
>+ </refsect1>
>+
>+ <refsect1>
>+ &return-value;
>+
>+ <variablelist>
>+ <varlistentry>
>+ <term><errorcode>EINVAL</errorcode></term>
>+ <listitem>
>+ <para>This ioctl is not supported.</para>
>+ </listitem>
>+ </varlistentry>
>+ </variablelist>
>+ </refsect1>
>+</refentry>
>+
>+<!--
>+Local Variables:
>+mode: sgml
>+sgml-parent-document: "v4l2.sgml"
>+indent-tabs-mode: nil
>+End:
>+-->
>diff -uNr v4l-dvb-aba823ecaea6/linux/include/linux/videodev2.h v4l-dvb-
>aba823ecaea6_new/linux/include/linux/videodev2.h
>--- v4l-dvb-aba823ecaea6/linux/include/linux/videodev2.h 2009-11-12
>09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/linux/include/linux/videodev2.h 2009-11-
>18 12:16:26.000000000 -0500
>@@ -731,6 +731,119 @@
> };
>
> /*
>+ * V I D E O T I M I N G S D V P R E S E T
>+ */
>+struct v4l2_dv_preset {
>+ __u32 preset;
>+ __u32 reserved[4];
>+};
>+
>+/*
>+ * D V P R E S E T S E N U M E R A T I O N
>+ */
>+struct v4l2_dv_enum_preset {
>+ __u32 index;
>+ __u32 preset;
>+ __u8 name[32]; /* Name of the preset timing */
>+ __u32 width;
>+ __u32 height;
>+ __u32 reserved[4];
>+};
>+
>+/*
>+ * D V P R E S E T V A L U E S
>+ */
>+#define V4L2_DV_PRESET_BASE 0x00000000
>+#define V4L2_DV_INVALID (V4L2_DV_PRESET_BASE + 0)
>+/* BT.1362 */
>+#define V4L2_DV_480P59_94 (V4L2_DV_PRESET_BASE + 1)
>+/* BT.1362 */
>+#define V4L2_DV_576P50 (V4L2_DV_PRESET_BASE + 2)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P24 (V4L2_DV_PRESET_BASE + 3)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P25 (V4L2_DV_PRESET_BASE + 4)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P30 (V4L2_DV_PRESET_BASE + 5)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P50 (V4L2_DV_PRESET_BASE + 6)
>+/* SMPTE 274M */
>+#define V4L2_DV_720P59_94 (V4L2_DV_PRESET_BASE + 7)
>+/* SMPTE 274M/296M */
>+#define V4L2_DV_720P60 (V4L2_DV_PRESET_BASE + 8)
>+/* BT.1120/ SMPTE 274M */
>+#define V4L2_DV_1080I29_97 (V4L2_DV_PRESET_BASE + 9)
>+/* BT.1120/ SMPTE 274M */
>+#define V4L2_DV_1080I30 (V4L2_DV_PRESET_BASE + 10)
>+/* BT.1120 */
>+#define V4L2_DV_1080I25 (V4L2_DV_PRESET_BASE + 11)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080I50 (V4L2_DV_PRESET_BASE + 12)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080I60 (V4L2_DV_PRESET_BASE + 13)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P24 (V4L2_DV_PRESET_BASE + 14)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P25 (V4L2_DV_PRESET_BASE + 15)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P30 (V4L2_DV_PRESET_BASE + 16)
>+/* BT.1120 */
>+#define V4L2_DV_1080P50 (V4L2_DV_PRESET_BASE + 17)
>+/* BT.1120 */
>+#define V4L2_DV_1080P60 (V4L2_DV_PRESET_BASE + 18)
>+
>+/*
>+ * D V B T T I M I N G S
>+ */
>+
>+/* BT.656/BT.1120 timing data */
>+struct v4l2_bt_timings {
>+ __u32 width; /* width in pixels */
>+ __u32 height; /* height in lines */
>+ __u32 interlaced; /* Interlaced or progressive */
>+ __u32 polarities; /* Positive or negative polarity */
>+ __u64 pixelclock; /* Pixel clock in HZ. Ex. 74.25MHz->74250000 */
>+ __u32 hfrontporch; /* Horizpontal front porch in pixels */
>+ __u32 hsync; /* Horizontal Sync length in pixels */
>+ __u32 hbackporch; /* Horizontal back porch in pixels */
>+ __u32 vfrontporch; /* Vertical front porch in pixels */
>+ __u32 vsync; /* Vertical Sync length in lines */
>+ __u32 vbackporch; /* Vertical back porch in lines */
>+ __u32 il_vfrontporch; /* Vertical front porch for bottom field of
>+ * interlaced field formats
>+ */
>+ __u32 il_vsync; /* Vertical sync length for bottom field of
>+ * interlaced field formats
>+ */
>+ __u32 il_vbackporch; /* Vertical back porch for bottom field of
>+ * interlaced field formats
>+ */
>+ __u32 reserved[16];
>+};
>+
>+/* Interlaced or progressive format */
>+#define V4L2_DV_PROGRESSIVE 0
>+#define V4L2_DV_INTERLACED 1
>+
>+/* Polarities. If bit is not set, it is assumed to be negative polarity */
>+#define V4L2_DV_VSYNC_POS_POL 0x00000001
>+#define V4L2_DV_HSYNC_POS_POL 0x00000002
>+
>+/* BT.656/1120 timing type */
>+enum v4l2_dv_timings_type {
>+ V4L2_DV_BT_656_1120,
>+};
>+
>+/* DV timings */
>+struct v4l2_dv_timings {
>+ enum v4l2_dv_timings_type type;
>+ union {
>+ struct v4l2_bt_timings bt;
>+ __u32 reserved[32];
>+ };
>+};
>+
>+/*
> * V I D E O I N P U T S
> */
> struct v4l2_input {
>@@ -741,7 +854,8 @@
> __u32 tuner; /* Associated tuner */
> v4l2_std_id std;
> __u32 status;
>- __u32 reserved[4];
>+ __u32 capabilities;
>+ __u32 reserved[3];
> };
>
> /* Values for the 'type' field */
>@@ -772,6 +886,11 @@
> #define V4L2_IN_ST_NO_ACCESS 0x02000000 /* Conditional access denied */
> #define V4L2_IN_ST_VTR 0x04000000 /* VTR time constant */
>
>+/* capabilities flags */
>+#define V4L2_IN_CAP_PRESETS 0x00000001 /* Supports DV_PRESETS */
>+#define V4L2_IN_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports Custom timings
>*/
>+#define V4L2_IN_CAP_STD 0x00000004 /* Supports STD */
>+
> /*
> * V I D E O O U T P U T S
> */
>@@ -782,13 +901,19 @@
> __u32 audioset; /* Associated audios (bitfield) */
> __u32 modulator; /* Associated modulator */
> v4l2_std_id std;
>- __u32 reserved[4];
>+ __u32 capabilities;
>+ __u32 reserved[3];
> };
> /* Values for the 'type' field */
> #define V4L2_OUTPUT_TYPE_MODULATOR 1
> #define V4L2_OUTPUT_TYPE_ANALOG 2
> #define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY 3
>
>+/* capabilities flags */
>+#define V4L2_OUT_CAP_PRESETS 0x00000001 /* Supports DV_PRESETS */
>+#define V4L2_OUT_CAP_CUSTOM_TIMINGS 0x00000002 /* Supports Custom
>timings */
>+#define V4L2_OUT_CAP_STD 0x00000004 /* Supports STD */
>+
> /*
> * C O N T R O L S
> */
>@@ -1621,6 +1746,13 @@
> #endif
>
> #define VIDIOC_S_HW_FREQ_SEEK _IOW('V', 82, struct
>v4l2_hw_freq_seek)
>+#define VIDIOC_ENUM_DV_PRESETS _IOWR('V', 83, struct
>v4l2_dv_enum_preset)
>+#define VIDIOC_S_DV_PRESET _IOWR('V', 84, struct v4l2_dv_preset)
>+#define VIDIOC_G_DV_PRESET _IOWR('V', 85, struct v4l2_dv_preset)
>+#define VIDIOC_QUERY_DV_PRESET _IOR('V', 86, struct v4l2_dv_preset)
>+#define VIDIOC_S_DV_TIMINGS _IOWR('V', 87, struct v4l2_dv_timings)
>+#define VIDIOC_G_DV_TIMINGS _IOWR('V', 88, struct v4l2_dv_timings)
>+
> /* Reminder: when adding new ioctls please add support for them to
> drivers/media/video/v4l2-compat-ioctl32.c as well! */
>
>diff -uNr v4l-dvb-aba823ecaea6/media-specs/Makefile v4l-dvb-
>aba823ecaea6_new/media-specs/Makefile
>--- v4l-dvb-aba823ecaea6/media-specs/Makefile 2009-11-12
>09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/media-specs/Makefile 2009-11-18
>12:16:59.000000000 -0500
>@@ -60,6 +60,10 @@
> v4l/vidioc-enumaudioout.xml \
> v4l/vidioc-enuminput.xml \
> v4l/vidioc-enumoutput.xml \
>+ v4l/vidioc-enum-dv-presets.xml \
>+ v4l/vidioc-g-dv-preset.xml \
>+ v4l/vidioc-query-dv-preset.xml \
>+ v4l/vidioc-g-dv-timings.xml \
> v4l/vidioc-enumstd.xml \
> v4l/vidioc-g-audio.xml \
> v4l/vidioc-g-audioout.xml \
>@@ -191,6 +195,12 @@
> VIDIOC_ENUMAUDOUT \
> VIDIOC_ENUMINPUT \
> VIDIOC_ENUMOUTPUT \
>+ VIDIOC_ENUM_DV_PRESETS \
>+ VIDIOC_QUERY_DV_PRESET \
>+ VIDIOC_G_DV_PRESET \
>+ VIDIOC_S_DV_PRESET \
>+ VIDIOC_G_DV_TIMINGS \
>+ VIDIOC_S_DV_TIMINGS \
> VIDIOC_ENUMSTD \
> VIDIOC_ENUM_FMT \
> VIDIOC_ENUM_FRAMEINTERVALS \
>@@ -283,6 +293,7 @@
> v4l2_priority \
> v4l2_tuner_type \
> v4l2_preemphasis \
>+ v4l2_dv_timings_type \
>
> STRUCTS = \
> v4l2_audio \
>@@ -333,6 +344,10 @@
> v4l2_tuner \
> v4l2_vbi_format \
> v4l2_window \
>+ v4l2_dv_enum_preset \
>+ v4l2_dv_preset \
>+ v4l2_dv_timings \
>+ v4l2_bt_timings \
>
> ERRORS = \
> EACCES \
>diff -uNr v4l-dvb-aba823ecaea6/media-specs/v4l/common.xml v4l-dvb-
>aba823ecaea6_new/media-specs/v4l/common.xml
>--- v4l-dvb-aba823ecaea6/media-specs/v4l/common.xml 2009-11-12
>09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/media-specs/v4l/common.xml 2009-11-18
>12:13:34.000000000 -0500
>@@ -716,6 +716,41 @@
> }
> </programlisting>
> </example>
>+ <section id="dv-timings">
>+ <title>Digital Video (DV) Timings</title>
>+ <para>
>+ The video standards discussed so far has been dealing with Analog TV
>and the
>+corresponding video timings. Today there are many more different hardware
>interfaces
>+such as High Definition TV interfaces (HDMI), VGA, DVI connectors etc.,
>that carries
>+video signals and there is a need to extend the API to allow settings
>video timings
>+ on these interfaces. Since it is not possible to extend the v4l2-std-id
>due to
>+the limited bits available, a new set of IOCTLs are added to set/get video
>timings at
>+the input and output:- </para><itemizedlist>
>+ <listitem>
>+ <para> DV Presets :- Digital Video (DV) presets. These are IDs
>representing a
>+video timing at the input/output. Presets can be thought of pre-defined
>timings implemented
>+by the hardware like 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 many
>+different presets as needed</para>
>+ </listitem>
>+ <listitem>
>+ <para> Custom DV Timings :- This will allow applications to define a
>more detailed
>+custom video timings at the interface. This includes parameters such as
>width, height,
>+ polarities, frontporch, backporch etc.
>+ </para>
>+ </listitem>
>+ </itemizedlist>
>+ <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,
>+ application use the &VIDIOC-G-DV-PRESET; ioctl and to Set a preset it
>uses the
>+ &VIDIOC-S-DV-PRESET; ioctl.</para>
>+ <para> To Set a Custom DV timings at the device, applications use the
>+ &VIDIOC-S-DV-TIMINGS; ioctl and to Get current Custom DV timings, it uses
>the
>+ &VIDIOC-G-DV-TIMINGS; ioctl.</para>
>+ <para> Applications can make use of the <xref linkend="input-
>capabilities" /> and
>+<xref linkend="output-capabilities"/> flags to decide what ioctls
>available to set the
>+video timings at the device.</para>
>+ </section>
> </section>
>
> &sub-controls;
>diff -uNr v4l-dvb-aba823ecaea6/media-specs/v4l/v4l2.xml v4l-dvb-
>aba823ecaea6_new/media-specs/v4l/v4l2.xml
>--- v4l-dvb-aba823ecaea6/media-specs/v4l/v4l2.xml 2009-11-12
>09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/media-specs/v4l/v4l2.xml 2009-11-18
>12:13:57.000000000 -0500
>@@ -416,6 +416,10 @@
> &sub-enum-frameintervals;
> &sub-enuminput;
> &sub-enumoutput;
>+ &sub-enum-dv-presets;
>+ &sub-g-dv-preset;
>+ &sub-query-dv-preset;
>+ &sub-g-dv-timings;
> &sub-enumstd;
> &sub-g-audio;
> &sub-g-audioout;
>diff -uNr v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-enum-dv-presets.xml
>v4l-dvb-aba823ecaea6_new/media-specs/v4l/vidioc-enum-dv-presets.xml
>--- v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-enum-dv-presets.xml
> 1969-12-31 19:00:00.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/media-specs/v4l/vidioc-enum-dv-presets.xml
> 2009-11-18 12:14:25.000000000 -0500
>@@ -0,0 +1,167 @@
>+<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>To query the attributes of a DV preset, applications initialize
>the
>+<structfield>index</structfield> field 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 identify one of the DV Preset value listed
>below</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 in pixels of the DV preset.</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>height</structfield></entry>
>+ <entry>Height in lines of 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>
>+
>+ <para><programlisting>
>+#define V4L2_DV_PRESET_BASE 0x00000000
>+#define V4L2_DV_INVALID (V4L2_DV_PRESET_BASE + 0)
>+/* BT.1362 */
>+#define V4L2_DV_480P59_94 (V4L2_DV_PRESET_BASE + 1)
>+/* BT.1362 */
>+#define V4L2_DV_576P50 (V4L2_DV_PRESET_BASE + 2)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P24 (V4L2_DV_PRESET_BASE + 3)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P25 (V4L2_DV_PRESET_BASE + 4)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P30 (V4L2_DV_PRESET_BASE + 5)
>+/* SMPTE 296M */
>+#define V4L2_DV_720P50 (V4L2_DV_PRESET_BASE + 6)
>+/* SMPTE 274M */
>+#define V4L2_DV_720P59_94 (V4L2_DV_PRESET_BASE + 7)
>+/* SMPTE 274M/296M */
>+#define V4L2_DV_720P60 (V4L2_DV_PRESET_BASE + 8)
>+/* BT.1120/ SMPTE 274M */
>+#define V4L2_DV_1080I29_97 (V4L2_DV_PRESET_BASE + 9)
>+/* BT.1120/ SMPTE 274M */
>+#define V4L2_DV_1080I30 (V4L2_DV_PRESET_BASE + 10)
>+/* BT.1120 */
>+#define V4L2_DV_1080I25 (V4L2_DV_PRESET_BASE + 11)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080I50 (V4L2_DV_PRESET_BASE + 12)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080I60 (V4L2_DV_PRESET_BASE + 13)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P24 (V4L2_DV_PRESET_BASE + 14)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P25 (V4L2_DV_PRESET_BASE + 15)
>+/* SMPTE 296M */
>+#define V4L2_DV_1080P30 (V4L2_DV_PRESET_BASE + 16)
>+/* BT.1120 */
>+#define V4L2_DV_1080P50 (V4L2_DV_PRESET_BASE + 17)
>+/* BT.1120 */
>+#define V4L2_DV_1080P60 (V4L2_DV_PRESET_BASE + 18)
>+</programlisting> </para>
>+ </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>
>+ </variablelist>
>+ </refsect1>
>+</refentry>
>+
>+<!--
>+Local Variables:
>+mode: sgml
>+sgml-parent-document: "v4l2.sgml"
>+indent-tabs-mode: nil
>+End:
>+-->
>diff -uNr v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-enuminput.xml v4l-
>dvb-aba823ecaea6_new/media-specs/v4l/vidioc-enuminput.xml
>--- v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-enuminput.xml 2009-11-
>12 09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/media-specs/v4l/vidioc-enuminput.xml 2009-11-
>18 12:14:54.000000000 -0500
>@@ -124,7 +124,13 @@
> </row>
> <row>
> <entry>__u32</entry>
>- <entry><structfield>reserved</structfield>[4]</entry>
>+ <entry><structfield>capabilities</structfield></entry>
>+ <entry>This field provides capabilities that exists at 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>
>@@ -261,6 +267,34 @@
> </tbody>
> </tgroup>
> </table>
>+
>+ <!-- Capabilities 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@xxxxxxxxxxxxxxx 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_PRESETS</constant></entry>
>+ <entry>0x00000001</entry>
>+ <entry>This input supports setting DV PRESET using
>VIDIOC_S_DV_PRESET</entry>
>+ </row>
>+ <row>
>+ <entry><constant>V4L2_OUT_CAP_CUSTOM_TIMINGS</constant></entry>
>+ <entry>0x00000002</entry>
>+ <entry>This input supports setting Custom timings using
>VIDIOC_S_DV_TIMINGS</entry>
>+ </row>
>+ <row>
>+ <entry><constant>V4L2_IN_CAP_STD</constant></entry>
>+ <entry>0x00000004</entry>
>+ <entry>This input supports setting standard using
>VIDIOC_S_STD</entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
> </refsect1>
>
> <refsect1>
>diff -uNr v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-enumoutput.xml v4l-
>dvb-aba823ecaea6_new/media-specs/v4l/vidioc-enumoutput.xml
>--- v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-enumoutput.xml 2009-11-
>12 09:21:05.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/media-specs/v4l/vidioc-enumoutput.xml
> 2009-11-18 12:15:09.000000000 -0500
>@@ -114,7 +114,13 @@
> </row>
> <row>
> <entry>__u32</entry>
>- <entry><structfield>reserved</structfield>[4]</entry>
>+ <entry><structfield>capabilities</structfield></entry>
>+ <entry>This field provides capabilities that exists at the
>+output. See <xref linkend="output-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>
>@@ -147,6 +153,34 @@
> </tgroup>
> </table>
>
>+ <!-- Capabilities 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@xxxxxxxxxxxxxxx on 19 Oct 2009.
>+ -->
>+ <table frame="none" pgwide="1" id="output-capabilities">
>+ <title>Output capabilities</title>
>+ <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 PRESET using
>VIDIOC_S_DV_PRESET</entry>
>+ </row>
>+ <row>
>+ <entry><constant>V4L2_OUT_CAP_CUSTOM_TIMINGS</constant></entry>
>+ <entry>0x00000002</entry>
>+ <entry>This output supports setting Custom timings using
>VIDIOC_S_DV_TIMINGS</entry>
>+ </row>
>+ <row>
>+ <entry><constant>V4L2_OUT_CAP_STD</constant></entry>
>+ <entry>0x00000004</entry>
>+ <entry>This output supports setting standard using
>VIDIOC_S_STD</entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
>+
> </refsect1>
> <refsect1>
> &return-value;
>diff -uNr v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-g-dv-preset.xml v4l-
>dvb-aba823ecaea6_new/media-specs/v4l/vidioc-g-dv-preset.xml
>--- v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-g-dv-preset.xml 1969-12-
>31 19:00:00.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/media-specs/v4l/vidioc-g-dv-preset.xml
> 2009-11-18 12:15:31.000000000 -0500
>@@ -0,0 +1,103 @@
>+<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>&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>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.
><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. 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</cons
>tant> parameter was unsuitable.</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>
>+
>+<!--
>+Local Variables:
>+mode: sgml
>+sgml-parent-document: "v4l2.sgml"
>+indent-tabs-mode: nil
>+End:
>+-->
>diff -uNr v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-g-dv-timings.xml v4l-
>dvb-aba823ecaea6_new/media-specs/v4l/vidioc-g-dv-timings.xml
>--- v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-g-dv-timings.xml 1969-12-
>31 19:00:00.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/media-specs/v4l/vidioc-g-dv-timings.xml
> 2009-11-18 12:15:42.000000000 -0500
>@@ -0,0 +1,195 @@
>+<refentry id="vidioc-g-dv-timings">
>+ <refmeta>
>+ <refentrytitle>ioctl VIDIOC_G_DV_TIMINGS,
>VIDIOC_S_DV_TIMINGS</refentrytitle>
>+ &manvol;
>+ </refmeta>
>+
>+ <refnamediv>
>+ <refname>VIDIOC_G_DV_TIMINGS</refname>
>+ <refname>VIDIOC_S_DV_TIMINGS</refname>
>+ <refpurpose>Get or Set Custom DV Timings at 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>&v4l2-dv-timings;
>+*<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_TIMINGS, VIDIOC_S_DV_TIMINGS</para>
>+ </listitem>
>+ </varlistentry>
>+ <varlistentry>
>+ <term><parameter>argp</parameter></term>
>+ <listitem>
>+ <para></para>
>+ </listitem>
>+ </varlistentry>
>+ </variablelist>
>+ </refsect1>
>+
>+ <refsect1>
>+ <title>Description</title>
>+ <para>To Set Custom DV timings at the input or output, applications
>use the
>+<constant>VIDIOC_S_DV_TIMINGS</constant> ioctl and to Get the current
>custom timings,
>+applications use <constant>VIDIOC_G_DV_TIMINGS</constant> ioctl. The
>detailed timing
>+informations are filled in using the structure &v4l2-dv-timings;. These
>ioctls take
>+ a pointer to &v4l2-dv-timings; structure as argument. If the ioctl is not
>supported
>+or the timing values are not correct, driver 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_TIMINGS</constant> parameter was unsuitable.</para>
>+ </listitem>
>+ </varlistentry>
>+ </variablelist>
>+
>+ <table frame="none" pgwide="1" id="v4l2-dv-timings-type">
>+ <title>DV Timing types</title>
>+ <tgroup cols="3">
>+ &cs-def;
>+ <tbody valign="top">
>+ <row>
>+ <entry><constant>V4L2_DV_BT_656_1120</constant></entry>
>+ <entry></entry>
>+ <entry>BT.656/BT.1120 timings </entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
>+
>+
>+ <table pgwide="1" frame="none" id="v4l2-bt-timings">
>+ <title>struct <structname>v4l2_bt_timings</structname></title>
>+ <tgroup cols="3">
>+ &cs-str;
>+ <tbody valign="top">
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>width</structfield></entry>
>+ <entry>width in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>height</structfield></entry>
>+ <entry>height in lines</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>interlaced</structfield></entry>
>+ <entry>Interlaced or progressive</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>polarities</structfield></entry>
>+ <entry>Positive or negative polarity</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>pixelclock</structfield></entry>
>+ <entry>Pixel clock in HZ. Ex. 74.25MHz->74250000</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>hfrontporch</structfield></entry>
>+ <entry>Horizpontal front porch in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>hsync</structfield></entry>
>+ <entry>Horizontal Sync length in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>hbackporch</structfield></entry>
>+ <entry>Horizontal back porch in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>vfrontporch</structfield></entry>
>+ <entry>Vertical front porch in pixels</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>vsync</structfield></entry>
>+ <entry>Vertical Sync length in lines</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>vbackporch</structfield></entry>
>+ <entry>Vertical back porch in lines</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>il_vfrontporch</structfield></entry>
>+ <entry>Vertical front porch for bottom field of interlaced field
>formats</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>il_vsync</structfield></entry>
>+ <entry>Vertical sync length for bottom field of interlaced field
>formats</entry>
>+ </row>
>+ <row>
>+ <entry>__u32</entry>
>+ <entry><structfield>il_vbackporch</structfield></entry>
>+ <entry>Vertical back porch for bottom field of interlaced field
>formats</entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
>+
>+ <table pgwide="1" frame="none" id="v4l2-dv-timings">
>+ <title>struct <structname>v4l2_dv_timings</structname></title>
>+ <tgroup cols="3">
>+ &cs-str;
>+ <tbody valign="top">
>+ <row>
>+ <entry>&v4l2-dv-timings-type;</entry>
>+ <entry><structfield>type</structfield></entry>
>+ <entry></entry>
>+ </row>
>+ <row>
>+ <entry>union</entry>
>+ <entry><structfield>&v4l2-bt-timings; bt and
>reserved[32]</structfield></entry>
>+ <entry></entry>
>+ </row>
>+ </tbody>
>+ </tgroup>
>+ </table>
>+
>+ </refsect1>
>+</refentry>
>+
>+<!--
>+Local Variables:
>+mode: sgml
>+sgml-parent-document: "v4l2.sgml"
>+indent-tabs-mode: nil
>+End:
>+-->
>diff -uNr v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-query-dv-preset.xml
>v4l-dvb-aba823ecaea6_new/media-specs/v4l/vidioc-query-dv-preset.xml
>--- v4l-dvb-aba823ecaea6/media-specs/v4l/vidioc-query-dv-preset.xml
> 1969-12-31 19:00:00.000000000 -0500
>+++ v4l-dvb-aba823ecaea6_new/media-specs/v4l/vidioc-query-dv-preset.xml
> 2009-11-18 12:15:53.000000000 -0500
>@@ -0,0 +1,80 @@
>+<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>&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>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 hardware detects a preset, the same is
>+returned in the preset field of &v4l2-dv-preset; When detection is not
>+possible or fails, the value V4L2_DV_INVALID is returned</para>
>+ </refsect1>
>+
>+ <refsect1>
>+ &return-value;
>+
>+ <variablelist>
>+ <varlistentry>
>+ <term><errorcode>EINVAL</errorcode></term>
>+ <listitem>
>+ <para>This ioctl is not supported.</para>
>+ </listitem>
>+ </varlistentry>
>+ </variablelist>
>+ </refsect1>
>+</refentry>
>+
>+<!--
>+Local Variables:
>+mode: sgml
>+sgml-parent-document: "v4l2.sgml"
>+indent-tabs-mode: nil
>+End:
>+-->
--
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