1 | <?xml version="1.0" encoding="UTF-8"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!ENTITY v4l-download-http "https://www.linuxtv.org/downloads/v4l-utils/v4l-utils-&v4l-utils-version;.tar.xz">
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8 | <!ENTITY v4l-download-ftp " ">
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9 | <!ENTITY v4l-md5sum "6716de513a1fd2e1edb404a46a455855">
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10 | <!ENTITY v4l-size "1.2 MB">
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11 | <!ENTITY v4l-buildsize "34 MB">
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12 | <!ENTITY v4l-time "0.4 SBU (using parallelism=4)">
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13 | ]>
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14 |
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15 | <sect1 id="v4l-utils" xreflabel="v4l-utils-&v4l-utils-version;">
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16 | <?dbhtml filename="v4l-utils.html" ?>
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17 |
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18 |
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19 | <title>v4l-utils-&v4l-utils-version;</title>
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20 |
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21 | <indexterm zone="v4l-utils">
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22 | <primary sortas="a-v4l-utils">v4l-utils</primary>
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23 | </indexterm>
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24 |
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25 | <sect2 role="package">
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26 | <title>Introduction to v4l-utils</title>
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27 |
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28 | <para>
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29 | <application>v4l-utils</application> provides a series of utilities for
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30 | media devices, allowing the ability to handle the proprietary formats
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31 | available from most webcams (libv4l), and providing tools to test V4L devices.
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32 | </para>
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33 |
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34 | &lfs122_checked;
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35 |
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36 | <bridgehead renderas="sect3">Package Information</bridgehead>
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37 | <itemizedlist spacing="compact">
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38 | <listitem>
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39 | <para>
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40 | Download (HTTP): <ulink url="&v4l-download-http;"/>
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41 | </para>
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42 | </listitem>
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43 | <listitem>
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44 | <para>
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45 | Download (FTP): <ulink url="&v4l-download-ftp;"/>
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46 | </para>
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47 | </listitem>
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48 | <listitem>
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49 | <para>
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50 | Download MD5 sum: &v4l-md5sum;
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51 | </para>
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52 | </listitem>
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53 | <listitem>
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54 | <para>
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55 | Download size: &v4l-size;
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56 | </para>
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57 | </listitem>
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58 | <listitem>
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59 | <para>
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60 | Estimated disk space required: &v4l-buildsize;
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61 | </para>
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62 | </listitem>
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63 | <listitem>
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64 | <para>
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65 | Estimated build time: &v4l-time;
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66 | </para>
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67 | </listitem>
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68 | </itemizedlist>
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69 | <!--
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70 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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71 | <itemizedlist>
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72 | <listitem>
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73 | <para>
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74 | Required patch:
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75 | <ulink url="&patch-root;/v4l-utils-&v4l-utils-version;-upstream_fixes-1.patch"/>
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76 | </para>
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77 | </listitem>
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78 | </itemizedlist>
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79 | -->
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80 | <bridgehead renderas="sect3">v4l-utils Dependencies</bridgehead>
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81 |
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82 | <bridgehead renderas="sect4">Recommended</bridgehead>
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83 | <para role="recommended">
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84 | <xref linkend="alsa-lib"/>,
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85 | <xref linkend="glu"/>, and
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86 | <xref linkend="libjpeg"/>
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87 | </para>
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88 |
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89 | <bridgehead renderas="sect4">Optional</bridgehead>
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90 | <para role="optional">
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91 | <xref linkend="doxygen"/>,
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92 | <xref linkend="qt6"/> (for qv4l2 and qvidcap),
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93 | <xref linkend="sdl2"/>,
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94 | both <xref linkend="llvm"/> (with Clang and target BPF)
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95 | and <ulink url='https://github.com/libbpf/libbpf'>libbpf</ulink>
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96 | (for infrared remote control decoders based on BPF), and
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97 | <ulink url="https://github.com/libsdl-org/SDL_image">SDL_image</ulink>
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98 | </para>
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99 |
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100 | </sect2>
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101 |
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102 | <sect2 role="installation">
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103 | <title>Installation of v4l-utils</title>
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104 |
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105 | <note>
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106 | <para>
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107 | If you've installed both LLVM and libbpf (not in BLFS), either
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108 | enable the BPF target (via
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109 | <option>-D LLVM_TARGETS_TO_BUILD=</option>) when building LLVM, or
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110 | disable the infrared remote control decoders based on BPF:
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111 | </para>
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112 |
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113 | <!-- not "nodump" because it's harmless for BLFS anyway -->
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114 | <screen><userinput>sed -i '/^ir_bpf_enabled/s/=.*/= false/' utils/keytable/meson.build</userinput></screen>
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115 | </note>
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116 |
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117 | <para>
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118 | Install <application>v4l-utils</application> by running
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119 | the following commands:
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120 | </para>
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121 |
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122 | <screen><userinput>mkdir build &&
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123 | cd build &&
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124 |
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125 | meson setup .. \
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126 | --prefix=/usr \
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127 | --buildtype=release \
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128 | -D gconv=disabled \
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129 | -D doxygen-doc=disabled &&
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130 | ninja</userinput></screen>
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131 |
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132 | <para>
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133 | This package does not come with a test suite.
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134 | </para>
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135 |
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136 | <para>
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137 | Now, as the <systemitem class="username">root</systemitem> user:
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138 | </para>
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139 |
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140 | <screen role="root"><userinput>ninja install</userinput></screen>
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141 |
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142 | <para>
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143 | If you also wish to install the contrib programs, add:
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144 | </para>
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145 |
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146 | <screen role="root"><userinput>for prog in v4l2gl v4l2grab
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147 | do
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148 | cp -v contrib/test/$prog /usr/bin
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149 | done</userinput></screen>
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150 |
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151 | </sect2>
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152 |
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153 | <sect2 role="commands">
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154 | <title>Command Explanations</title>
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155 |
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156 | <!-- Please do NOT touch this unless you've tried a DESTDIR installation
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157 | and you really understand what will be going on:
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158 |
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159 | Without this option the package will overwrite
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160 | /usr/lib/gconv/gconv-modules which is a part of the **Glibc**
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161 | installation and break iconv (both the command iconv(1) and the
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162 | Glibc function iconv(3)). Then some BLFS packages will FTBFS or
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163 | fail a dozen of tests etc.
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164 |
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165 | Already reported as https://lore.kernel.org/linux-media/3ffb1568a9ff6c0b6f5424de3a0fafb24e7b3ac0.camel@xry111.site/.
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166 |
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167 | Debian and Gentoo also have -D gconv=disabled. Fedora manually
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168 | moves the gconv-modules file in a DESTDIR installation. IMO it's
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169 | completely stupid to have an installation conflicting with Glibc in
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170 | the default configuration, but they just completely ignore my
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171 | report and rely on the distro maintainers to resolve the issue,
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172 | even without mentioning the conflict in README.md, nor INSTALL.md.
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173 | This is the worst upstream behavior I've ever seen. -->
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174 | <para>
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175 | <parameter>-D gconv=disabled</parameter>: This switch disables
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176 | the erroneous installation of gconv-modules that would break glibc.
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177 | </para>
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178 |
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179 | </sect2>
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180 |
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181 | <sect2 role="content">
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182 | <title>Contents</title>
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183 |
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184 | <segmentedlist>
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185 | <segtitle>Installed Programs</segtitle>
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186 | <segtitle>Installed Library</segtitle>
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187 | <segtitle>Installed Directories</segtitle>
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188 |
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189 | <seglistitem>
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190 | <seg>
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191 | cec-compliance,
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192 | cec-ctl,
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193 | cec-follower,
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194 | cx18-ctl,
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195 | decode_tm6000,
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196 | dvb-fe-tool,
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197 | dvb-format-convert,
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198 | dvbv5-daemon,
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199 | dvbv5-scan,
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200 | dvbv5-zap,
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201 | ir-ctl,
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202 | ir-keytable,
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203 | ivtv-ctl,
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204 | media-ctl,
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205 | qv4l2,
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206 | qvidcap,
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207 | rds-ctl,
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208 | v4l2-compliance,
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209 | v4l2-ctl,
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210 | v4l2-dbg,
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211 | v4l2gl,
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212 | v4l2grab, and
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213 | v4l2-sysfs-path
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214 | </seg>
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215 | <seg>
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216 | libdvbv5.so,
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217 | libv4l1.so,
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218 | libv4l2.so,
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219 | libv4l2rds.so,
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220 | libv4lconvert.so,
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221 | v4l1compat.so, and
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222 | v4l2convert.so
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223 | </seg>
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224 | <seg>
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225 | /etc/rc_keymaps,
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226 | /lib/udev/rc_keymaps,
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227 | /usr/include/libdvbv5, and
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228 | /usr/lib/libv4l
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229 | </seg>
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230 | </seglistitem>
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231 | </segmentedlist>
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232 |
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233 | <variablelist>
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234 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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235 | <?dbfo list-presentation="list"?>
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236 | <?dbhtml list-presentation="table"?>
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237 |
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238 | <varlistentry id="cx18-ctl">
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239 | <term><command>cx18-ctl</command></term>
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240 | <listitem>
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241 | <para>
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242 | is a tool to handle cx18 based devices
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243 | </para>
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244 | <indexterm zone="v4l-utils cx18-ctl">
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245 | <primary sortas="b-cx18-ctl">cx18-ctl</primary>
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246 | </indexterm>
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247 | </listitem>
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248 | </varlistentry>
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249 |
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250 | <varlistentry id="decode_tm6000">
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251 | <term><command>decode_tm6000</command></term>
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252 | <listitem>
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253 | <para>
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254 | decodes multiplexed formats from TM5600/TM6000 USB devices
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255 | </para>
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256 | <indexterm zone="v4l-utils decode_tm6000">
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257 | <primary sortas="b-decode_tm6000">decode_tm6000</primary>
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258 | </indexterm>
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259 | </listitem>
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260 | </varlistentry>
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261 |
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262 | <varlistentry id="dvb-fe-tool">
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263 | <term><command>dvb-fe-tool</command></term>
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264 | <listitem>
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265 | <para>
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266 | is a command line tool for digital TV services
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267 | </para>
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268 | <indexterm zone="v4l-utils dvb-fe-tool">
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269 | <primary sortas="b-dvb-fe-tool">dvb-fe-tool</primary>
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270 | </indexterm>
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271 | </listitem>
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272 | </varlistentry>
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273 |
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274 | <varlistentry id="dvb-format-convert">
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275 | <term><command>dvb-format-convert</command></term>
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276 | <listitem>
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277 | <para>
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278 | is a tool meant to convert among different file formats. It is
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279 | compliant with version 5 of the DVB API
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280 | </para>
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281 | <indexterm zone="v4l-utils dvb-format-convert">
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282 | <primary sortas="b-dvb-format-convert">dvb-format-convert</primary>
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283 | </indexterm>
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284 | </listitem>
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285 | </varlistentry>
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286 |
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287 | <varlistentry id="dvbv5-scan">
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288 | <term><command>dvbv5-scan</command></term>
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289 | <listitem>
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290 | <para>
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291 | is a command line frequency scanning tool for digital TV
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292 | services that are compliant with version 5 of the DVB API
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293 | </para>
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294 | <indexterm zone="v4l-utils dvbv5-scan">
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295 | <primary sortas="b-dvbv5-scan">dvbv5-scan</primary>
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296 | </indexterm>
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297 | </listitem>
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298 | </varlistentry>
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299 |
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300 | <varlistentry id="dvbv5-zap">
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301 | <term><command>dvbv5-zap</command></term>
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302 | <listitem>
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303 | <para>
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304 | is a command line tuning tool for digital TV services
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305 | that is compliant with version 5 of the DVB API
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306 | </para>
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307 | <indexterm zone="v4l-utils dvbv5-zap">
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308 | <primary sortas="b-dvbv5-zap">dvbv5-zap</primary>
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309 | </indexterm>
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310 | </listitem>
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311 | </varlistentry>
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312 |
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313 | <varlistentry id="ir-keytable">
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314 | <term><command>ir-keytable</command></term>
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315 | <listitem>
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316 | <para>
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317 | is a tool that lists the Remote Controller devices, allows one
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318 | to get/set IR keycode/scancode tables, test events generated by
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319 | IR, and to adjust other Remote Controller options
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320 | </para>
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321 | <indexterm zone="v4l-utils ir-keytable">
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322 | <primary sortas="b-ir-keytable">ir-keytable</primary>
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323 | </indexterm>
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324 | </listitem>
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325 | </varlistentry>
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326 |
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327 | <varlistentry id="ivtv-ctl">
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328 | <term><command>ivtv-ctl</command></term>
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329 | <listitem>
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330 | <para>
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331 | is a utility that can control many card settings, like changing
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332 | the inputs from tuner to svideo or composite, setting video
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333 | resolution or changing video mode (PAL, SECAM, NTSC)
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334 | </para>
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335 | <indexterm zone="v4l-utils ivtv-ctl">
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336 | <primary sortas="b-ivtv-ctl">ivtv-ctl</primary>
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337 | </indexterm>
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338 | </listitem>
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339 | </varlistentry>
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340 |
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341 | <varlistentry id="media-ctl">
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342 | <term><command>media-ctl</command></term>
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343 | <listitem>
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344 | <para>
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345 | is a utility used to configure V4L2 devices
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346 | </para>
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347 | <indexterm zone="v4l-utils media-ctl">
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348 | <primary sortas="b-media-ctl">media-ctl</primary>
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349 | </indexterm>
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350 | </listitem>
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351 | </varlistentry>
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352 |
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353 | <varlistentry id="qv4l2">
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354 | <term><command>qv4l2</command></term>
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355 | <listitem>
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356 | <para>
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357 | is used to test video4linux capture devices
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358 | </para>
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359 | <indexterm zone="v4l-utils qv4l2">
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360 | <primary sortas="b-qv4l2">qv4l2</primary>
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361 | </indexterm>
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362 | </listitem>
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363 | </varlistentry>
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364 |
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365 | <varlistentry id="qvidcap">
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366 | <term><command>qvidcap</command></term>
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367 | <listitem>
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368 | <para>
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369 | is used to capture video from a V4L2 device
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370 | </para>
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371 | <indexterm zone="v4l-utils qvidcap">
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372 | <primary sortas="b-qvidcap">qvidcap</primary>
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373 | </indexterm>
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374 | </listitem>
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375 | </varlistentry>
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376 |
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377 | <varlistentry id="rds-ctl">
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378 | <term><command>rds-ctl</command></term>
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379 | <listitem>
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380 | <para>
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381 | is a utility for decoding raw RDS data from V4L2 Radio devices
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382 | and offers simple ways to access the received RDS information
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383 | </para>
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384 | <indexterm zone="v4l-utils rds-ctl">
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385 | <primary sortas="b-rds-ctl">rds-ctl</primary>
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386 | </indexterm>
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387 | </listitem>
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388 | </varlistentry>
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389 |
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390 | <varlistentry id="v4l2-compliance">
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391 | <term><command>v4l2-compliance</command></term>
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392 | <listitem>
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393 | <para>
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394 | is a compliance test tool
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395 | </para>
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396 | <indexterm zone="v4l-utils v4l2-compliance">
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397 | <primary sortas="b-v4l2-compliance">v4l2-compliance</primary>
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398 | </indexterm>
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399 | </listitem>
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400 | </varlistentry>
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401 |
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402 | <varlistentry id="v4l2-ctl">
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403 | <term><command>v4l2-ctl</command></term>
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404 | <listitem>
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405 | <para>
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406 | is a tool to control v4l2 controls from the cmdline
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407 | </para>
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408 | <indexterm zone="v4l-utils v4l2-ctl">
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409 | <primary sortas="b-v4l2-ctl">v4l2-ctl</primary>
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410 | </indexterm>
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411 | </listitem>
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412 | </varlistentry>
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413 |
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414 | <varlistentry id="v4l2-dbg">
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415 | <term><command>v4l2-dbg</command></term>
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416 | <listitem>
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417 | <para>
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418 | is a tool to directly get and set registers of v4l2 devices
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419 | </para>
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420 | <indexterm zone="v4l-utils v4l2-dbg">
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421 | <primary sortas="b-v4l2-dbg">v4l2-dbg</primary>
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422 | </indexterm>
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423 | </listitem>
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424 | </varlistentry>
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425 |
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426 | <varlistentry id="v4l2gl">
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427 | <term><command>v4l2gl</command></term>
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428 | <listitem>
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429 | <para>
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430 | captures images using libv4l and stores them as PPM files
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431 | </para>
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432 | <indexterm zone="v4l-utils v4l2gl">
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433 | <primary sortas="b-v4l2gl">v4l2gl</primary>
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434 | </indexterm>
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435 | </listitem>
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436 | </varlistentry>
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437 |
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438 | <varlistentry id="v4l2grab">
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439 | <term><command>v4l2grab</command></term>
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440 | <listitem>
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441 | <para>
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442 | captures images using libv4l and stores them as PPM files, while
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443 | also allowing for additional options such as setting the amount of
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444 | frames captured and saving the file as a RAW file
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445 | </para>
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446 | <indexterm zone="v4l-utils v4l2grab">
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447 | <primary sortas="b-v4l2grab">v4l2grab</primary>
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448 | </indexterm>
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449 | </listitem>
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450 | </varlistentry>
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451 |
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452 | <varlistentry id="v4l2-sysfs-path">
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453 | <term><command>v4l2-sysfs-path</command></term>
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454 | <listitem>
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455 | <para>
|
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456 | checks the media devices installed on a machine and the
|
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457 | corresponding device nodes
|
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458 | </para>
|
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459 | <indexterm zone="v4l-utils v4l2-sysfs-path">
|
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460 | <primary sortas="b-v4l2-sysfs-path">v4l2-sysfs-path</primary>
|
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461 | </indexterm>
|
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462 | </listitem>
|
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463 | </varlistentry>
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464 |
|
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465 | </variablelist>
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466 |
|
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467 | </sect2>
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468 |
|
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469 | </sect1>
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