mirror of
https://github.com/Zeckmathederg/glfs.git
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286 lines
7.9 KiB
XML
286 lines
7.9 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY libwebp-download-http "https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-&libwebp-version;.tar.gz">
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<!ENTITY libwebp-download-ftp " ">
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<!ENTITY libwebp-md5sum "34869086761c0e2da6361035f7b64771">
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<!ENTITY libwebp-size "4.0 MB">
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<!ENTITY libwebp-buildsize "45 MB">
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<!ENTITY libwebp-time "0.1 SBU (with parallelism=4)">
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]>
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<sect1 id="libwebp" xreflabel="libwebp-&libwebp-version;">
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<?dbhtml filename="libwebp.html"?>
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<title>libwebp-&libwebp-version;</title>
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<indexterm zone="libwebp">
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<primary sortas="a-libwebp">libwebp</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to libwebp</title>
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<para>
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The <application>libwebp</application> package contains a library
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and support programs to encode and decode images in WebP format.
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</para>
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&lfs121_checked;
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Download (HTTP): <ulink url="&libwebp-download-http;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download (FTP): <ulink url="&libwebp-download-ftp;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download MD5 sum: &libwebp-md5sum;
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</para>
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</listitem>
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<listitem>
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<para>
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Download size: &libwebp-size;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated disk space required: &libwebp-buildsize;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated build time: &libwebp-time;
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</para>
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</listitem>
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</itemizedlist>
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<!-- applied in 1.3.2
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<bridgehead renderas="sect3">Additional Downloads</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Required patch:
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<ulink url="&patch-root;/libwebp-&libwebp-version;-security_update-2.patch"/>
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</para>
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</listitem>
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</itemizedlist>
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-->
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<bridgehead renderas="sect3">libwebp Dependencies</bridgehead>
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<bridgehead renderas="sect4">Recommended</bridgehead>
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<para role="recommended">
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<xref linkend="libjpeg"/>,
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<xref linkend="libpng"/>,
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<xref linkend="libtiff"/>, and
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<xref linkend="sdl"/> (for improved 3D Acceleration)
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</para>
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<bridgehead renderas="sect4">Optional</bridgehead>
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<para role="optional">
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<xref linkend="freeglut"/> and
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<xref linkend="giflib"/>
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</para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of libwebp</title>
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<!-- applied in 1.3.2
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<para>
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Fix a security issue identified upstream:
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</para>
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<screen><userinput>patch -Np1 -i ../libwebp-&libwebp-version;-security_update-2.patch</userinput></screen>
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-->
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<para>
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Install <application>libwebp</application> by running the following
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commands:
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</para>
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<screen><userinput>./configure --prefix=/usr \
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--enable-libwebpmux \
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--enable-libwebpdemux \
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--enable-libwebpdecoder \
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--enable-libwebpextras \
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--enable-swap-16bit-csp \
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--disable-static &&
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make</userinput></screen>
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<para>
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This package does not come with a test suite.
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</para>
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<para>
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Now, as the <systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"><userinput>make install</userinput></screen>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para>
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<parameter>--enable-swap-16bit-csp</parameter>: This switch enables byte
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swap for 16 bit colorspaces.
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</para>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="../../xincludes/static-libraries.xml"/>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Programs</segtitle>
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<segtitle>Installed Library</segtitle>
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<segtitle>Installed Directory</segtitle>
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<seglistitem>
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<seg>
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cwebp,
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dwebp,
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gif2webp,
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img2webp,
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vwebp,
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webpinfo,
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and webpmux
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</seg>
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<seg>
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libsharpyuv.so,
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libwebpdecoder.so,
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libwebpdemux.so,
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libwebpmux.so,
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and libwebp.so
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</seg>
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<seg>
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/usr/include/webp
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</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="cwebp">
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<term><command>cwebp</command></term>
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<listitem>
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<para>
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compresses an image using the WebP format
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</para>
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<indexterm zone="libwebp cwebp">
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<primary sortas="b-cwebp">cwebp</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="dwebp">
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<term><command>dwebp</command></term>
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<listitem>
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<para>
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decompresses WebP files into PNG, PAM, PPM or PGM images
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</para>
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<indexterm zone="libwebp dwebp">
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<primary sortas="b-dwebp">dwebp</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="gif2webp">
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<term><command>gif2webp</command></term>
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<listitem>
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<para>
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converts a GIF image to a WebP image
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</para>
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<indexterm zone="libwebp gif2webp">
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<primary sortas="b-gif2webp">gif2webp</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="img2webp">
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<term><command>img2webp</command></term>
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<listitem>
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<para>
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creates an animated WebP file from a sequence of input images
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</para>
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<indexterm zone="libwebp img2webp">
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<primary sortas="b-img2webp">img2webp</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="vwebp">
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<term><command>vwebp</command></term>
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<listitem>
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<para>
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decompresses a WebP file and displays it in a window
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</para>
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<indexterm zone="libwebp vwebp">
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<primary sortas="b-vwebp">vwebp</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="webpinfo">
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<term><command>webpinfo</command></term>
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<listitem>
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<para>
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prints out the cunk level structure of WebP files along with
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performing basic integrity checks
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</para>
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<indexterm zone="libwebp webpinfo">
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<primary sortas="b-webpinfo">webpinfo</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="webpmux">
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<term><command>webpmux</command></term>
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<listitem>
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<para>
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creates animated WebP files from non-animated WebP images, extracts
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frames from animated WebP images, and manages XMP/EXIF metadata and
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the ICC profile
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</para>
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<indexterm zone="libwebp webpmux">
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<primary sortas="b-webpmux">webpmux</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="libwebp-lib">
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<term><filename class="libraryfile">libwebp.so</filename></term>
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<listitem>
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<para>
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contains the API functions for WebP encoding and decoding
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</para>
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<indexterm zone="libwebp libwebp-lib">
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<primary sortas="c-libwebp">libwebp.so</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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