[c72f1ff] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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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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[420c072] | 7 | <!ENTITY libwebp-download-http "http://downloads.webmproject.org/releases/webp/libwebp-&libwebp-version;.tar.gz">
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[c72f1ff] | 8 | <!ENTITY libwebp-download-ftp " ">
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[592bd5cb] | 9 | <!ENTITY libwebp-md5sum "994cf2efb664ef5140fa0b56b83fa721">
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[7d5d3d4] | 10 | <!ENTITY libwebp-size "4.0 MB">
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[592bd5cb] | 11 | <!ENTITY libwebp-buildsize "43 MB">
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[f9829f1] | 12 | <!ENTITY libwebp-time "0.3 SBU">
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[c72f1ff] | 13 | ]>
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| 14 |
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| 15 | <sect1 id="libwebp" xreflabel="libwebp-&libwebp-version;">
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| 16 | <?dbhtml filename="libwebp.html"?>
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| 17 |
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| 18 |
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| 19 | <title>libwebp-&libwebp-version;</title>
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| 20 |
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| 21 | <indexterm zone="libwebp">
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| 22 | <primary sortas="a-libwebp">libwebp</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 libwebp</title>
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| 27 |
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| 28 | <para>
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| 29 | The <application>libwebp</application> package contains a library
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| 30 | and support programs to encode and decode images in WebP format.
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| 31 | </para>
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| 32 |
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[ac0d66d] | 33 | &lfs113_checked;
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[c72f1ff] | 34 |
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| 35 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 36 | <itemizedlist spacing="compact">
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| 37 | <listitem>
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| 38 | <para>
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| 39 | Download (HTTP): <ulink url="&libwebp-download-http;"/>
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| 40 | </para>
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| 41 | </listitem>
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| 42 | <listitem>
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| 43 | <para>
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| 44 | Download (FTP): <ulink url="&libwebp-download-ftp;"/>
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| 45 | </para>
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| 46 | </listitem>
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| 47 | <listitem>
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| 48 | <para>
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| 49 | Download MD5 sum: &libwebp-md5sum;
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| 50 | </para>
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| 51 | </listitem>
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| 52 | <listitem>
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| 53 | <para>
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| 54 | Download size: &libwebp-size;
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| 55 | </para>
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| 56 | </listitem>
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| 57 | <listitem>
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| 58 | <para>
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| 59 | Estimated disk space required: &libwebp-buildsize;
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| 60 | </para>
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| 61 | </listitem>
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| 62 | <listitem>
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| 63 | <para>
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| 64 | Estimated build time: &libwebp-time;
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| 65 | </para>
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| 66 | </listitem>
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| 67 | </itemizedlist>
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| 68 |
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[b2dcbff6] | 69 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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| 70 | <itemizedlist spacing="compact">
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| 71 | <listitem>
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| 72 | <para>
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| 73 | Required patch:
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| 74 | <ulink url="&patch-root;/libwebp-&libwebp-version;-upstream_fix-1.patch"/>
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| 75 | </para>
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| 76 | </listitem>
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| 77 | </itemizedlist>
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| 78 |
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[c72f1ff] | 79 | <bridgehead renderas="sect3">libwebp Dependencies</bridgehead>
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| 80 |
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| 81 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 82 | <para role="recommended">
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| 83 | <xref linkend="libjpeg"/>,
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[fcab2481] | 84 | <xref linkend="libpng"/>,
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| 85 | <xref linkend="libtiff"/>, and
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[d258276] | 86 | <xref linkend="sdl"/> (for improved 3D Acceleration)
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[c72f1ff] | 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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[5b24455] | 91 | <xref linkend="freeglut"/> and
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[c72f1ff] | 92 | <xref linkend="giflib"/>
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| 93 | </para>
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| 94 |
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| 95 | <para condition="html" role="usernotes">
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| 96 | User Notes: <ulink url="&blfs-wiki;/libwebp"/>
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| 97 | </para>
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| 98 | </sect2>
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| 99 |
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| 100 | <sect2 role="installation">
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| 101 | <title>Installation of libwebp</title>
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| 102 |
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[bc243e46] | 103 | <!-- https://bugs.chromium.org/p/webp/issues/detail?id=603
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| 104 | but not public yet -->
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| 105 | <para>
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| 106 | Fix a security issue identified upstream:
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| 107 | </para>
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| 108 |
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| 109 | <screen><userinput>patch -Np1 -i ../libwebp-&libwebp-version;-upstream_fix-1.patch</userinput></screen>
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| 110 |
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[c72f1ff] | 111 | <para>
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| 112 | Install <application>libwebp</application> by running the following
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| 113 | commands:
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| 114 | </para>
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| 115 |
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[bc243e46] | 116 | <screen><userinput>./configure --prefix=/usr \
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[9d2268bb] | 117 | --enable-libwebpmux \
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| 118 | --enable-libwebpdemux \
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| 119 | --enable-libwebpdecoder \
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| 120 | --enable-libwebpextras \
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| 121 | --enable-swap-16bit-csp \
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| 122 | --disable-static &&
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[c72f1ff] | 123 | make</userinput></screen>
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| 124 |
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| 125 | <para>
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| 126 | This package does not come with a test suite.
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| 127 | </para>
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| 128 |
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| 129 | <para>
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| 130 | Now, as the <systemitem class="username">root</systemitem> user:
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| 131 | </para>
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| 132 |
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| 133 | <screen role="root"><userinput>make install</userinput></screen>
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| 134 |
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| 135 | </sect2>
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| 136 |
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| 137 | <sect2 role="commands">
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| 138 | <title>Command Explanations</title>
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| 139 |
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[9d2268bb] | 140 |
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| 141 | <para>
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| 142 | <parameter>--enable-swap-16bit-csp</parameter>: This switch enables byte
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| 143 | swap for 16 bit colorspaces.
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| 144 | </para>
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| 145 |
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[c72f1ff] | 146 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 147 | href="../../xincludes/static-libraries.xml"/>
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| 148 |
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| 149 | </sect2>
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| 150 |
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| 151 | <sect2 role="content">
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| 152 | <title>Contents</title>
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| 153 |
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| 154 | <segmentedlist>
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| 155 | <segtitle>Installed Programs</segtitle>
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| 156 | <segtitle>Installed Library</segtitle>
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| 157 | <segtitle>Installed Directory</segtitle>
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| 158 |
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| 159 | <seglistitem>
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| 160 | <seg>
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[8558044] | 161 | cwebp,
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| 162 | dwebp,
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| 163 | gif2webp,
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| 164 | img2webp,
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[d9a7451] | 165 | vwebp,
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[8558044] | 166 | webpinfo,
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[d9a7451] | 167 | and webpmux
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[c72f1ff] | 168 | </seg>
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| 169 | <seg>
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[592bd5cb] | 170 | libsharpyuv.so,
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[8558044] | 171 | libwebpdecoder.so,
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[d9a7451] | 172 | libwebpdemux.so,
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| 173 | libwebpmux.so,
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| 174 | and libwebp.so
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[c72f1ff] | 175 | </seg>
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| 176 | <seg>
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| 177 | /usr/include/webp
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| 178 | </seg>
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| 179 | </seglistitem>
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| 180 | </segmentedlist>
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| 181 |
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| 182 | <variablelist>
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| 183 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 184 | <?dbfo list-presentation="list"?>
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| 185 | <?dbhtml list-presentation="table"?>
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| 186 |
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| 187 | <varlistentry id="cwebp">
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| 188 | <term><command>cwebp</command></term>
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| 189 | <listitem>
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| 190 | <para>
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[4c24eb0a] | 191 | compresses an image using the WebP format
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[c72f1ff] | 192 | </para>
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| 193 | <indexterm zone="libwebp cwebp">
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| 194 | <primary sortas="b-cwebp">cwebp</primary>
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| 195 | </indexterm>
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| 196 | </listitem>
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| 197 | </varlistentry>
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| 198 |
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| 199 | <varlistentry id="dwebp">
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| 200 | <term><command>dwebp</command></term>
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| 201 | <listitem>
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| 202 | <para>
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[4c24eb0a] | 203 | decompresses WebP files into PNG, PAM, PPM or PGM images
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[c72f1ff] | 204 | </para>
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| 205 | <indexterm zone="libwebp dwebp">
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| 206 | <primary sortas="b-dwebp">dwebp</primary>
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| 207 | </indexterm>
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| 208 | </listitem>
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| 209 | </varlistentry>
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| 210 |
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[9d2268bb] | 211 | <varlistentry id="gif2webp">
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| 212 | <term><command>gif2webp</command></term>
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| 213 | <listitem>
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| 214 | <para>
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[4c24eb0a] | 215 | converts a GIF image to a WebP image
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[9d2268bb] | 216 | </para>
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| 217 | <indexterm zone="libwebp gif2webp">
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| 218 | <primary sortas="b-gif2webp">gif2webp</primary>
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| 219 | </indexterm>
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| 220 | </listitem>
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| 221 | </varlistentry>
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| 222 |
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[d9a7451] | 223 | <varlistentry id="img2webp">
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| 224 | <term><command>img2webp</command></term>
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| 225 | <listitem>
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| 226 | <para>
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[4c24eb0a] | 227 | creates an animated WebP file from a sequence of input images
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[d9a7451] | 228 | </para>
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| 229 | <indexterm zone="libwebp img2webp">
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| 230 | <primary sortas="b-img2webp">img2webp</primary>
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| 231 | </indexterm>
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| 232 | </listitem>
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| 233 | </varlistentry>
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| 234 |
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[9d2268bb] | 235 | <varlistentry id="vwebp">
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| 236 | <term><command>vwebp</command></term>
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| 237 | <listitem>
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| 238 | <para>
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[4c24eb0a] | 239 | decompresses a WebP file and displays it in a window
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[9d2268bb] | 240 | </para>
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| 241 | <indexterm zone="libwebp vwebp">
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| 242 | <primary sortas="b-vwebp">vwebp</primary>
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| 243 | </indexterm>
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| 244 | </listitem>
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| 245 | </varlistentry>
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| 246 |
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[d9a7451] | 247 | <varlistentry id="webpinfo">
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| 248 | <term><command>webpinfo</command></term>
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| 249 | <listitem>
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| 250 | <para>
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| 251 | prints out the cunk level structure of WebP files along with
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[4c24eb0a] | 252 | performing basic integrity checks
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[d9a7451] | 253 | </para>
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| 254 | <indexterm zone="libwebp webpinfo">
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| 255 | <primary sortas="b-webpinfo">webpinfo</primary>
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| 256 | </indexterm>
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| 257 | </listitem>
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| 258 | </varlistentry>
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| 259 |
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[9d2268bb] | 260 | <varlistentry id="webpmux">
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| 261 | <term><command>webpmux</command></term>
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| 262 | <listitem>
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| 263 | <para>
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| 264 | creates animated WebP files from non-animated WebP images, extracts
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| 265 | frames from animated WebP images, and manages XMP/EXIF metadata and
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[7d5d3d4] | 266 | the ICC profile
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[9d2268bb] | 267 | </para>
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| 268 | <indexterm zone="libwebp webpmux">
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| 269 | <primary sortas="b-webpmux">webpmux</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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[c72f1ff] | 274 | <varlistentry id="libwebp-lib">
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| 275 | <term><filename class="libraryfile">libwebp.so</filename></term>
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| 276 | <listitem>
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| 277 | <para>
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[4c24eb0a] | 278 | contains the API functions for WebP encoding and decoding
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[c72f1ff] | 279 | </para>
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| 280 | <indexterm zone="libwebp libwebp-lib">
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| 281 | <primary sortas="c-libwebp">libwebp.so</primary>
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| 282 | </indexterm>
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| 283 | </listitem>
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| 284 | </varlistentry>
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| 285 |
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| 286 | </variablelist>
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| 287 |
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| 288 | </sect2>
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| 289 |
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| 290 | </sect1>
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