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<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % general-entities SYSTEM "../../general.ent">
%general-entities;
<!ENTITY libwebp-download-http "http://downloads.webmproject.org/releases/webp/libwebp-&libwebp-version;.tar.gz">
<!ENTITY libwebp-download-ftp " ">
<!ENTITY libwebp-md5sum "b5e2e414a8adee4c25fe56b18dd9c549">
<!ENTITY libwebp-size "3.9 MB">
<!ENTITY libwebp-buildsize "35 MB">
<!ENTITY libwebp-time "0.3 SBU">
]>
<sect1 id="libwebp" xreflabel="libwebp-&libwebp-version;">
<?dbhtml filename="libwebp.html"?>
<sect1info>
<date>$Date$</date>
</sect1info>
<title>libwebp-&libwebp-version;</title>
<indexterm zone="libwebp">
<primary sortas="a-libwebp">libwebp</primary>
</indexterm>
<sect2 role="package">
<title>Introduction to libwebp</title>
<para>
The <application>libwebp</application> package contains a library
and support programs to encode and decode images in WebP format.
</para>
&lfs111_checked;
<bridgehead renderas="sect3">Package Information</bridgehead>
<itemizedlist spacing="compact">
<listitem>
<para>
Download (HTTP): <ulink url="&libwebp-download-http;"/>
</para>
</listitem>
<listitem>
<para>
Download (FTP): <ulink url="&libwebp-download-ftp;"/>
</para>
</listitem>
<listitem>
<para>
Download MD5 sum: &libwebp-md5sum;
</para>
</listitem>
<listitem>
<para>
Download size: &libwebp-size;
</para>
</listitem>
<listitem>
<para>
Estimated disk space required: &libwebp-buildsize;
</para>
</listitem>
<listitem>
<para>
Estimated build time: &libwebp-time;
</para>
</listitem>
</itemizedlist>
<bridgehead renderas="sect3">libwebp Dependencies</bridgehead>
<bridgehead renderas="sect4">Recommended</bridgehead>
<para role="recommended">
<xref linkend="libjpeg"/>,
<xref linkend="libpng"/>,
<xref linkend="libtiff"/>, and
<xref linkend="sdl"/> (for improved 3D Acceleration)
</para>
<bridgehead renderas="sect4">Optional</bridgehead>
<para role="optional">
<xref linkend="freeglut"/> and
<xref linkend="giflib"/>
</para>
<para condition="html" role="usernotes">
User Notes: <ulink url="&blfs-wiki;/libwebp"/>
</para>
</sect2>
<sect2 role="installation">
<title>Installation of libwebp</title>
<para>
Install <application>libwebp</application> by running the following
commands:
</para>
<screen><userinput>./configure --prefix=/usr \
--enable-libwebpmux \
--enable-libwebpdemux \
--enable-libwebpdecoder \
--enable-libwebpextras \
--enable-swap-16bit-csp \
--disable-static &&
make</userinput></screen>
<para>
This package does not come with a test suite.
</para>
<para>
Now, as the <systemitem class="username">root</systemitem> user:
</para>
<screen role="root"><userinput>make install</userinput></screen>
</sect2>
<sect2 role="commands">
<title>Command Explanations</title>
<para>
<parameter>--enable-swap-16bit-csp</parameter>: This switch enables byte
swap for 16 bit colorspaces.
</para>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
href="../../xincludes/static-libraries.xml"/>
</sect2>
<sect2 role="content">
<title>Contents</title>
<segmentedlist>
<segtitle>Installed Programs</segtitle>
<segtitle>Installed Library</segtitle>
<segtitle>Installed Directory</segtitle>
<seglistitem>
<seg>
cwebp,
dwebp,
gif2webp,
img2webp,
vwebp,
webpinfo,
and webpmux
</seg>
<seg>
libwebpdecoder.so,
libwebpdemux.so,
libwebpmux.so,
and libwebp.so
</seg>
<seg>
/usr/include/webp
</seg>
</seglistitem>
</segmentedlist>
<variablelist>
<bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>
<?dbhtml list-presentation="table"?>
<varlistentry id="cwebp">
<term><command>cwebp</command></term>
<listitem>
<para>
compresses an image using the WebP format
</para>
<indexterm zone="libwebp cwebp">
<primary sortas="b-cwebp">cwebp</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="dwebp">
<term><command>dwebp</command></term>
<listitem>
<para>
decompresses WebP files into PNG, PAM, PPM or PGM images
</para>
<indexterm zone="libwebp dwebp">
<primary sortas="b-dwebp">dwebp</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="gif2webp">
<term><command>gif2webp</command></term>
<listitem>
<para>
converts a GIF image to a WebP image
</para>
<indexterm zone="libwebp gif2webp">
<primary sortas="b-gif2webp">gif2webp</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="img2webp">
<term><command>img2webp</command></term>
<listitem>
<para>
creates an animated WebP file from a sequence of input images
</para>
<indexterm zone="libwebp img2webp">
<primary sortas="b-img2webp">img2webp</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="vwebp">
<term><command>vwebp</command></term>
<listitem>
<para>
decompresses a WebP file and displays it in a window
</para>
<indexterm zone="libwebp vwebp">
<primary sortas="b-vwebp">vwebp</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="webpinfo">
<term><command>webpinfo</command></term>
<listitem>
<para>
prints out the cunk level structure of WebP files along with
performing basic integrity checks
</para>
<indexterm zone="libwebp webpinfo">
<primary sortas="b-webpinfo">webpinfo</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="webpmux">
<term><command>webpmux</command></term>
<listitem>
<para>
creates animated WebP files from non-animated WebP images, extracts
frames from animated WebP images, and manages XMP/EXIF metadata and
ICC profile
</para>
<indexterm zone="libwebp webpmux">
<primary sortas="b-webpmux">webpmux</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="libwebp-lib">
<term><filename class="libraryfile">libwebp.so</filename></term>
<listitem>
<para>
contains the API functions for WebP encoding and decoding
</para>
<indexterm zone="libwebp libwebp-lib">
<primary sortas="c-libwebp">libwebp.so</primary>
</indexterm>
</listitem>
</varlistentry>
</variablelist>
</sect2>
</sect1>
|
