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Diffstat (limited to 'Documentation/DocBook/media/v4l/vidioc-enumstd.xml')
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diff --git a/Documentation/DocBook/media/v4l/vidioc-enumstd.xml b/Documentation/DocBook/media/v4l/vidioc-enumstd.xml deleted file mode 100644 index f18454e91752..000000000000 --- a/Documentation/DocBook/media/v4l/vidioc-enumstd.xml +++ /dev/null @@ -1,389 +0,0 @@ -<refentry id="vidioc-enumstd"> - <refmeta> - <refentrytitle>ioctl VIDIOC_ENUMSTD</refentrytitle> - &manvol; - </refmeta> - - <refnamediv> - <refname>VIDIOC_ENUMSTD</refname> - <refpurpose>Enumerate supported video standards</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_standard *<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_ENUMSTD</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 standard, -especially a custom (driver defined) one, applications initialize the -<structfield>index</structfield> field of &v4l2-standard; and call the -<constant>VIDIOC_ENUMSTD</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 standards -applications shall begin at index zero, incrementing by one until the -driver returns <errorcode>EINVAL</errorcode>. Drivers may enumerate a -different set of standards after switching the video input or -output.<footnote> - <para>The supported standards may overlap and we need an -unambiguous set to find the current standard returned by -<constant>VIDIOC_G_STD</constant>.</para> - </footnote></para> - - <table pgwide="1" frame="none" id="v4l2-standard"> - <title>struct <structname>v4l2_standard</structname></title> - <tgroup cols="3"> - &cs-str; - <tbody valign="top"> - <row> - <entry>__u32</entry> - <entry><structfield>index</structfield></entry> - <entry>Number of the video standard, set by the -application.</entry> - </row> - <row> - <entry>&v4l2-std-id;</entry> - <entry><structfield>id</structfield></entry> - <entry>The bits in this field identify the standard as -one of the common standards listed in <xref linkend="v4l2-std-id" />, -or if bits 32 to 63 are set as custom standards. Multiple bits can be -set if the hardware does not distinguish between these standards, -however separate indices do not indicate the opposite. The -<structfield>id</structfield> must be unique. No other enumerated -<structname>v4l2_standard</structname> structure, for this input or -output anyway, can contain the same set of bits.</entry> - </row> - <row> - <entry>__u8</entry> - <entry><structfield>name</structfield>[24]</entry> - <entry>Name of the standard, a NUL-terminated ASCII -string, for example: "PAL-B/G", "NTSC Japan". This information is -intended for the user.</entry> - </row> - <row> - <entry>&v4l2-fract;</entry> - <entry><structfield>frameperiod</structfield></entry> - <entry>The frame period (not field period) is numerator -/ denominator. For example M/NTSC has a frame period of 1001 / -30000 seconds.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>framelines</structfield></entry> - <entry>Total lines per frame including blanking, -e. g. 625 for B/PAL.</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-fract"> - <title>struct <structname>v4l2_fract</structname></title> - <tgroup cols="3"> - &cs-str; - <tbody valign="top"> - <row> - <entry>__u32</entry> - <entry><structfield>numerator</structfield></entry> - <entry></entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>denominator</structfield></entry> - <entry></entry> - </row> - </tbody> - </tgroup> - </table> - - <table pgwide="1" frame="none" id="v4l2-std-id"> - <title>typedef <structname>v4l2_std_id</structname></title> - <tgroup cols="3"> - &cs-str; - <tbody valign="top"> - <row> - <entry>__u64</entry> - <entry><structfield>v4l2_std_id</structfield></entry> - <entry>This type is a set, each bit representing another -video standard as listed below and in <xref -linkend="video-standards" />. The 32 most significant bits are reserved -for custom (driver defined) video standards.</entry> - </row> - </tbody> - </tgroup> - </table> - - <para><programlisting> -#define V4L2_STD_PAL_B ((v4l2_std_id)0x00000001) -#define V4L2_STD_PAL_B1 ((v4l2_std_id)0x00000002) -#define V4L2_STD_PAL_G ((v4l2_std_id)0x00000004) -#define V4L2_STD_PAL_H ((v4l2_std_id)0x00000008) -#define V4L2_STD_PAL_I ((v4l2_std_id)0x00000010) -#define V4L2_STD_PAL_D ((v4l2_std_id)0x00000020) -#define V4L2_STD_PAL_D1 ((v4l2_std_id)0x00000040) -#define V4L2_STD_PAL_K ((v4l2_std_id)0x00000080) - -#define V4L2_STD_PAL_M ((v4l2_std_id)0x00000100) -#define V4L2_STD_PAL_N ((v4l2_std_id)0x00000200) -#define V4L2_STD_PAL_Nc ((v4l2_std_id)0x00000400) -#define V4L2_STD_PAL_60 ((v4l2_std_id)0x00000800) -</programlisting></para><para><constant>V4L2_STD_PAL_60</constant> is -a hybrid standard with 525 lines, 60 Hz refresh rate, and PAL color -modulation with a 4.43 MHz color subcarrier. Some PAL video recorders -can play back NTSC tapes in this mode for display on a 50/60 Hz agnostic -PAL TV.</para><para><programlisting> -#define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000) -#define V4L2_STD_NTSC_M_JP ((v4l2_std_id)0x00002000) -#define V4L2_STD_NTSC_443 ((v4l2_std_id)0x00004000) -</programlisting></para><para><constant>V4L2_STD_NTSC_443</constant> -is a hybrid standard with 525 lines, 60 Hz refresh rate, and NTSC -color modulation with a 4.43 MHz color -subcarrier.</para><para><programlisting> -#define V4L2_STD_NTSC_M_KR ((v4l2_std_id)0x00008000) - -#define V4L2_STD_SECAM_B ((v4l2_std_id)0x00010000) -#define V4L2_STD_SECAM_D ((v4l2_std_id)0x00020000) -#define V4L2_STD_SECAM_G ((v4l2_std_id)0x00040000) -#define V4L2_STD_SECAM_H ((v4l2_std_id)0x00080000) -#define V4L2_STD_SECAM_K ((v4l2_std_id)0x00100000) -#define V4L2_STD_SECAM_K1 ((v4l2_std_id)0x00200000) -#define V4L2_STD_SECAM_L ((v4l2_std_id)0x00400000) -#define V4L2_STD_SECAM_LC ((v4l2_std_id)0x00800000) - -/* ATSC/HDTV */ -#define V4L2_STD_ATSC_8_VSB ((v4l2_std_id)0x01000000) -#define V4L2_STD_ATSC_16_VSB ((v4l2_std_id)0x02000000) -</programlisting></para><para><!-- ATSC proposal by Mark McClelland, -video4linux-list@redhat.com on 17 Oct 2002 ---><constant>V4L2_STD_ATSC_8_VSB</constant> and -<constant>V4L2_STD_ATSC_16_VSB</constant> are U.S. terrestrial digital -TV standards. Presently the V4L2 API does not support digital TV. See -also the Linux DVB API at <ulink -url="https://linuxtv.org">https://linuxtv.org</ulink>.</para> -<para><programlisting> -#define V4L2_STD_PAL_BG (V4L2_STD_PAL_B |\ - V4L2_STD_PAL_B1 |\ - V4L2_STD_PAL_G) -#define V4L2_STD_B (V4L2_STD_PAL_B |\ - V4L2_STD_PAL_B1 |\ - V4L2_STD_SECAM_B) -#define V4L2_STD_GH (V4L2_STD_PAL_G |\ - V4L2_STD_PAL_H |\ - V4L2_STD_SECAM_G |\ - V4L2_STD_SECAM_H) -#define V4L2_STD_PAL_DK (V4L2_STD_PAL_D |\ - V4L2_STD_PAL_D1 |\ - V4L2_STD_PAL_K) -#define V4L2_STD_PAL (V4L2_STD_PAL_BG |\ - V4L2_STD_PAL_DK |\ - V4L2_STD_PAL_H |\ - V4L2_STD_PAL_I) -#define V4L2_STD_NTSC (V4L2_STD_NTSC_M |\ - V4L2_STD_NTSC_M_JP |\ - V4L2_STD_NTSC_M_KR) -#define V4L2_STD_MN (V4L2_STD_PAL_M |\ - V4L2_STD_PAL_N |\ - V4L2_STD_PAL_Nc |\ - V4L2_STD_NTSC) -#define V4L2_STD_SECAM_DK (V4L2_STD_SECAM_D |\ - V4L2_STD_SECAM_K |\ - V4L2_STD_SECAM_K1) -#define V4L2_STD_DK (V4L2_STD_PAL_DK |\ - V4L2_STD_SECAM_DK) - -#define V4L2_STD_SECAM (V4L2_STD_SECAM_B |\ - V4L2_STD_SECAM_G |\ - V4L2_STD_SECAM_H |\ - V4L2_STD_SECAM_DK |\ - V4L2_STD_SECAM_L |\ - V4L2_STD_SECAM_LC) - -#define V4L2_STD_525_60 (V4L2_STD_PAL_M |\ - V4L2_STD_PAL_60 |\ - V4L2_STD_NTSC |\ - V4L2_STD_NTSC_443) -#define V4L2_STD_625_50 (V4L2_STD_PAL |\ - V4L2_STD_PAL_N |\ - V4L2_STD_PAL_Nc |\ - V4L2_STD_SECAM) - -#define V4L2_STD_UNKNOWN 0 -#define V4L2_STD_ALL (V4L2_STD_525_60 |\ - V4L2_STD_625_50) -</programlisting></para> - - <table pgwide="1" id="video-standards" orient="land"> - <title>Video Standards (based on [<xref linkend="itu470" />])</title> - <tgroup cols="12" colsep="1" rowsep="1" align="center"> - <colspec colname="c1" align="left" /> - <colspec colname="c2" /> - <colspec colname="c3" /> - <colspec colname="c4" /> - <colspec colname="c5" /> - <colspec colnum="7" colname="c7" /> - <colspec colnum="9" colname="c9" /> - <colspec colnum="12" colname="c12" /> - <spanspec namest="c2" nameend="c3" spanname="m" align="center" /> - <spanspec namest="c4" nameend="c12" spanname="x" align="center" /> - <spanspec namest="c5" nameend="c7" spanname="b" align="center" /> - <spanspec namest="c9" nameend="c12" spanname="s" align="center" /> - <thead> - <row> - <entry>Characteristics</entry> - <entry><para>M/NTSC<footnote><para>Japan uses a standard -similar to M/NTSC -(V4L2_STD_NTSC_M_JP).</para></footnote></para></entry> - <entry>M/PAL</entry> - <entry><para>N/PAL<footnote><para> The values in -brackets apply to the combination N/PAL a.k.a. -N<subscript>C</subscript> used in Argentina -(V4L2_STD_PAL_Nc).</para></footnote></para></entry> - <entry align="center">B, B1, G/PAL</entry> - <entry align="center">D, D1, K/PAL</entry> - <entry align="center">H/PAL</entry> - <entry align="center">I/PAL</entry> - <entry align="center">B, G/SECAM</entry> - <entry align="center">D, K/SECAM</entry> - <entry align="center">K1/SECAM</entry> - <entry align="center">L/SECAM</entry> - </row> - </thead> - <tbody valign="top"> - <row> - <entry>Frame lines</entry> - <entry spanname="m">525</entry> - <entry spanname="x">625</entry> - </row> - <row> - <entry>Frame period (s)</entry> - <entry spanname="m">1001/30000</entry> - <entry spanname="x">1/25</entry> - </row> - <row> - <entry>Chrominance sub-carrier frequency (Hz)</entry> - <entry>3579545 ± 10</entry> - <entry>3579611.49 ± 10</entry> - <entry>4433618.75 ± 5 (3582056.25 -± 5)</entry> - <entry spanname="b">4433618.75 ± 5</entry> - <entry>4433618.75 ± 1</entry> - <entry spanname="s">f<subscript>OR</subscript> = -4406250 ± 2000, f<subscript>OB</subscript> = 4250000 -± 2000</entry> - </row> - <row> - <entry>Nominal radio-frequency channel bandwidth -(MHz)</entry> - <entry>6</entry> - <entry>6</entry> - <entry>6</entry> - <entry>B: 7; B1, G: 8</entry> - <entry>8</entry> - <entry>8</entry> - <entry>8</entry> - <entry>8</entry> - <entry>8</entry> - <entry>8</entry> - <entry>8</entry> - </row> - <row> - <entry>Sound carrier relative to vision carrier -(MHz)</entry> - <entry>+ 4.5</entry> - <entry>+ 4.5</entry> - <entry>+ 4.5</entry> - <entry><para>+ 5.5 ± 0.001 -<footnote><para>In the Federal Republic of Germany, Austria, Italy, -the Netherlands, Slovakia and Switzerland a system of two sound -carriers is used, the frequency of the second carrier being -242.1875 kHz above the frequency of the first sound carrier. For -stereophonic sound transmissions a similar system is used in -Australia.</para></footnote> <footnote><para>New Zealand uses a sound -carrier displaced 5.4996 ± 0.0005 MHz from the vision -carrier.</para></footnote> <footnote><para>In Denmark, Finland, New -Zealand, Sweden and Spain a system of two sound carriers is used. In -Iceland, Norway and Poland the same system is being introduced. The -second carrier is 5.85 MHz above the vision carrier and is DQPSK -modulated with 728 kbit/s sound and data multiplex. (NICAM -system)</para></footnote> <footnote><para>In the United Kingdom, a -system of two sound carriers is used. The second sound carrier is -6.552 MHz above the vision carrier and is DQPSK modulated with a -728 kbit/s sound and data multiplex able to carry two sound -channels. (NICAM system)</para></footnote></para></entry> - <entry>+ 6.5 ± 0.001</entry> - <entry>+ 5.5</entry> - <entry>+ 5.9996 ± 0.0005</entry> - <entry>+ 5.5 ± 0.001</entry> - <entry>+ 6.5 ± 0.001</entry> - <entry>+ 6.5</entry> - <entry><para>+ 6.5 <footnote><para>In France, a -digital carrier 5.85 MHz away from the vision carrier may be used in -addition to the main sound carrier. It is modulated in differentially -encoded QPSK with a 728 kbit/s sound and data multiplexer capable of -carrying two sound channels. (NICAM -system)</para></footnote></para></entry> - </row> - </tbody> - </tgroup> - </table> - </refsect1> - - <refsect1> - &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>The &v4l2-standard; <structfield>index</structfield> -is out of bounds.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><errorcode>ENODATA</errorcode></term> - <listitem> - <para>Standard video timings are not supported for this input or output.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> -</refentry> |