source: general/graphlib/libwebp.xml

trunk
Last change on this file was 76a8538, checked in by Thomas Trepl <thomas@…>, 5 days ago

Upgrade libwebp-1.4.0
  • Property mode set to 100644
File size: 7.9 KB
Line 
1<?xml version="1.0" encoding="UTF-8"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7 <!ENTITY libwebp-download-http "https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-&libwebp-version;.tar.gz">
8 <!ENTITY libwebp-download-ftp " ">
9 <!ENTITY libwebp-md5sum "07daaa13bef03b7be07f11977b159cb8">
10 <!ENTITY libwebp-size "4.0 MB">
11 <!ENTITY libwebp-buildsize "45 MB">
12 <!ENTITY libwebp-time "0.1 SBU (with parallelism=4)">
13]>
14
15<sect1 id="libwebp" xreflabel="libwebp-&libwebp-version;">
16 <?dbhtml filename="libwebp.html"?>
17
18
19 <title>libwebp-&libwebp-version;</title>
20
21 <indexterm zone="libwebp">
22 <primary sortas="a-libwebp">libwebp</primary>
23 </indexterm>
24
25 <sect2 role="package">
26 <title>Introduction to libwebp</title>
27
28 <para>
29 The <application>libwebp</application> package contains a library
30 and support programs to encode and decode images in WebP format.
31 </para>
32
33 &lfs121_checked;
34
35 <bridgehead renderas="sect3">Package Information</bridgehead>
36 <itemizedlist spacing="compact">
37 <listitem>
38 <para>
39 Download (HTTP): <ulink url="&libwebp-download-http;"/>
40 </para>
41 </listitem>
42 <listitem>
43 <para>
44 Download (FTP): <ulink url="&libwebp-download-ftp;"/>
45 </para>
46 </listitem>
47 <listitem>
48 <para>
49 Download MD5 sum: &libwebp-md5sum;
50 </para>
51 </listitem>
52 <listitem>
53 <para>
54 Download size: &libwebp-size;
55 </para>
56 </listitem>
57 <listitem>
58 <para>
59 Estimated disk space required: &libwebp-buildsize;
60 </para>
61 </listitem>
62 <listitem>
63 <para>
64 Estimated build time: &libwebp-time;
65 </para>
66 </listitem>
67 </itemizedlist>
68 <!-- applied in 1.3.2
69 <bridgehead renderas="sect3">Additional Downloads</bridgehead>
70 <itemizedlist spacing="compact">
71 <listitem>
72 <para>
73 Required patch:
74 <ulink url="&patch-root;/libwebp-&libwebp-version;-security_update-2.patch"/>
75 </para>
76 </listitem>
77 </itemizedlist>
78 -->
79 <bridgehead renderas="sect3">libwebp Dependencies</bridgehead>
80
81 <bridgehead renderas="sect4">Recommended</bridgehead>
82 <para role="recommended">
83 <xref linkend="libjpeg"/>,
84 <xref linkend="libpng"/>,
85 <xref linkend="libtiff"/>, and
86 <xref linkend="sdl"/> (for improved 3D Acceleration)
87 </para>
88
89 <bridgehead renderas="sect4">Optional</bridgehead>
90 <para role="optional">
91 <xref linkend="freeglut"/> and
92 <xref linkend="giflib"/>
93 </para>
94
95 </sect2>
96
97 <sect2 role="installation">
98 <title>Installation of libwebp</title>
99<!-- applied in 1.3.2
100 <para>
101 Fix a security issue identified upstream:
102 </para>
103
104<screen><userinput>patch -Np1 -i ../libwebp-&libwebp-version;-security_update-2.patch</userinput></screen>
105-->
106 <para>
107 Install <application>libwebp</application> by running the following
108 commands:
109 </para>
110
111<screen><userinput>./configure --prefix=/usr \
112 --enable-libwebpmux \
113 --enable-libwebpdemux \
114 --enable-libwebpdecoder \
115 --enable-libwebpextras \
116 --enable-swap-16bit-csp \
117 --disable-static &amp;&amp;
118make</userinput></screen>
119
120 <para>
121 This package does not come with a test suite.
122 </para>
123
124 <para>
125 Now, as the <systemitem class="username">root</systemitem> user:
126 </para>
127
128<screen role="root"><userinput>make install</userinput></screen>
129
130 </sect2>
131
132 <sect2 role="commands">
133 <title>Command Explanations</title>
134
135
136 <para>
137 <parameter>--enable-swap-16bit-csp</parameter>: This switch enables byte
138 swap for 16 bit colorspaces.
139 </para>
140
141 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
142 href="../../xincludes/static-libraries.xml"/>
143
144 </sect2>
145
146 <sect2 role="content">
147 <title>Contents</title>
148
149 <segmentedlist>
150 <segtitle>Installed Programs</segtitle>
151 <segtitle>Installed Library</segtitle>
152 <segtitle>Installed Directory</segtitle>
153
154 <seglistitem>
155 <seg>
156 cwebp,
157 dwebp,
158 gif2webp,
159 img2webp,
160 vwebp,
161 webpinfo,
162 and webpmux
163 </seg>
164 <seg>
165 libsharpyuv.so,
166 libwebpdecoder.so,
167 libwebpdemux.so,
168 libwebpmux.so,
169 and libwebp.so
170 </seg>
171 <seg>
172 /usr/include/webp
173 </seg>
174 </seglistitem>
175 </segmentedlist>
176
177 <variablelist>
178 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
179 <?dbfo list-presentation="list"?>
180 <?dbhtml list-presentation="table"?>
181
182 <varlistentry id="cwebp">
183 <term><command>cwebp</command></term>
184 <listitem>
185 <para>
186 compresses an image using the WebP format
187 </para>
188 <indexterm zone="libwebp cwebp">
189 <primary sortas="b-cwebp">cwebp</primary>
190 </indexterm>
191 </listitem>
192 </varlistentry>
193
194 <varlistentry id="dwebp">
195 <term><command>dwebp</command></term>
196 <listitem>
197 <para>
198 decompresses WebP files into PNG, PAM, PPM or PGM images
199 </para>
200 <indexterm zone="libwebp dwebp">
201 <primary sortas="b-dwebp">dwebp</primary>
202 </indexterm>
203 </listitem>
204 </varlistentry>
205
206 <varlistentry id="gif2webp">
207 <term><command>gif2webp</command></term>
208 <listitem>
209 <para>
210 converts a GIF image to a WebP image
211 </para>
212 <indexterm zone="libwebp gif2webp">
213 <primary sortas="b-gif2webp">gif2webp</primary>
214 </indexterm>
215 </listitem>
216 </varlistentry>
217
218 <varlistentry id="img2webp">
219 <term><command>img2webp</command></term>
220 <listitem>
221 <para>
222 creates an animated WebP file from a sequence of input images
223 </para>
224 <indexterm zone="libwebp img2webp">
225 <primary sortas="b-img2webp">img2webp</primary>
226 </indexterm>
227 </listitem>
228 </varlistentry>
229
230 <varlistentry id="vwebp">
231 <term><command>vwebp</command></term>
232 <listitem>
233 <para>
234 decompresses a WebP file and displays it in a window
235 </para>
236 <indexterm zone="libwebp vwebp">
237 <primary sortas="b-vwebp">vwebp</primary>
238 </indexterm>
239 </listitem>
240 </varlistentry>
241
242 <varlistentry id="webpinfo">
243 <term><command>webpinfo</command></term>
244 <listitem>
245 <para>
246 prints out the cunk level structure of WebP files along with
247 performing basic integrity checks
248 </para>
249 <indexterm zone="libwebp webpinfo">
250 <primary sortas="b-webpinfo">webpinfo</primary>
251 </indexterm>
252 </listitem>
253 </varlistentry>
254
255 <varlistentry id="webpmux">
256 <term><command>webpmux</command></term>
257 <listitem>
258 <para>
259 creates animated WebP files from non-animated WebP images, extracts
260 frames from animated WebP images, and manages XMP/EXIF metadata and
261 the ICC profile
262 </para>
263 <indexterm zone="libwebp webpmux">
264 <primary sortas="b-webpmux">webpmux</primary>
265 </indexterm>
266 </listitem>
267 </varlistentry>
268
269 <varlistentry id="libwebp-lib">
270 <term><filename class="libraryfile">libwebp.so</filename></term>
271 <listitem>
272 <para>
273 contains the API functions for WebP encoding and decoding
274 </para>
275 <indexterm zone="libwebp libwebp-lib">
276 <primary sortas="c-libwebp">libwebp.so</primary>
277 </indexterm>
278 </listitem>
279 </varlistentry>
280
281 </variablelist>
282
283 </sect2>
284
285</sect1>
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