source: general/graphlib/libwebp.xml@ f405062

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Last change on this file since f405062 was bc243e46, checked in by Xi Ruoyao <xry111@…>, 14 months ago

libwebp: Separate patch into own <screen> and describe what it's for
  • Property mode set to 100644
File size: 8.0 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
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 "http://downloads.webmproject.org/releases/webp/libwebp-&libwebp-version;.tar.gz">
8 <!ENTITY libwebp-download-ftp " ">
9 <!ENTITY libwebp-md5sum "994cf2efb664ef5140fa0b56b83fa721">
10 <!ENTITY libwebp-size "4.0 MB">
11 <!ENTITY libwebp-buildsize "43 MB">
12 <!ENTITY libwebp-time "0.3 SBU">
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 &lfs113_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
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;-upstream_fix-1.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 <para condition="html" role="usernotes">
96 User Notes: <ulink url="&blfs-wiki;/libwebp"/>
97 </para>
98 </sect2>
99
100 <sect2 role="installation">
101 <title>Installation of libwebp</title>
102
103 <!-- https://bugs.chromium.org/p/webp/issues/detail?id=603
104 but not public yet -->
105 <para>
106 Fix a security issue identified upstream:
107 </para>
108
109<screen><userinput>patch -Np1 -i ../libwebp-&libwebp-version;-upstream_fix-1.patch</userinput></screen>
110
111 <para>
112 Install <application>libwebp</application> by running the following
113 commands:
114 </para>
115
116<screen><userinput>./configure --prefix=/usr \
117 --enable-libwebpmux \
118 --enable-libwebpdemux \
119 --enable-libwebpdecoder \
120 --enable-libwebpextras \
121 --enable-swap-16bit-csp \
122 --disable-static &amp;&amp;
123make</userinput></screen>
124
125 <para>
126 This package does not come with a test suite.
127 </para>
128
129 <para>
130 Now, as the <systemitem class="username">root</systemitem> user:
131 </para>
132
133<screen role="root"><userinput>make install</userinput></screen>
134
135 </sect2>
136
137 <sect2 role="commands">
138 <title>Command Explanations</title>
139
140
141 <para>
142 <parameter>--enable-swap-16bit-csp</parameter>: This switch enables byte
143 swap for 16 bit colorspaces.
144 </para>
145
146 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
147 href="../../xincludes/static-libraries.xml"/>
148
149 </sect2>
150
151 <sect2 role="content">
152 <title>Contents</title>
153
154 <segmentedlist>
155 <segtitle>Installed Programs</segtitle>
156 <segtitle>Installed Library</segtitle>
157 <segtitle>Installed Directory</segtitle>
158
159 <seglistitem>
160 <seg>
161 cwebp,
162 dwebp,
163 gif2webp,
164 img2webp,
165 vwebp,
166 webpinfo,
167 and webpmux
168 </seg>
169 <seg>
170 libsharpyuv.so,
171 libwebpdecoder.so,
172 libwebpdemux.so,
173 libwebpmux.so,
174 and libwebp.so
175 </seg>
176 <seg>
177 /usr/include/webp
178 </seg>
179 </seglistitem>
180 </segmentedlist>
181
182 <variablelist>
183 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
184 <?dbfo list-presentation="list"?>
185 <?dbhtml list-presentation="table"?>
186
187 <varlistentry id="cwebp">
188 <term><command>cwebp</command></term>
189 <listitem>
190 <para>
191 compresses an image using the WebP format
192 </para>
193 <indexterm zone="libwebp cwebp">
194 <primary sortas="b-cwebp">cwebp</primary>
195 </indexterm>
196 </listitem>
197 </varlistentry>
198
199 <varlistentry id="dwebp">
200 <term><command>dwebp</command></term>
201 <listitem>
202 <para>
203 decompresses WebP files into PNG, PAM, PPM or PGM images
204 </para>
205 <indexterm zone="libwebp dwebp">
206 <primary sortas="b-dwebp">dwebp</primary>
207 </indexterm>
208 </listitem>
209 </varlistentry>
210
211 <varlistentry id="gif2webp">
212 <term><command>gif2webp</command></term>
213 <listitem>
214 <para>
215 converts a GIF image to a WebP image
216 </para>
217 <indexterm zone="libwebp gif2webp">
218 <primary sortas="b-gif2webp">gif2webp</primary>
219 </indexterm>
220 </listitem>
221 </varlistentry>
222
223 <varlistentry id="img2webp">
224 <term><command>img2webp</command></term>
225 <listitem>
226 <para>
227 creates an animated WebP file from a sequence of input images
228 </para>
229 <indexterm zone="libwebp img2webp">
230 <primary sortas="b-img2webp">img2webp</primary>
231 </indexterm>
232 </listitem>
233 </varlistentry>
234
235 <varlistentry id="vwebp">
236 <term><command>vwebp</command></term>
237 <listitem>
238 <para>
239 decompresses a WebP file and displays it in a window
240 </para>
241 <indexterm zone="libwebp vwebp">
242 <primary sortas="b-vwebp">vwebp</primary>
243 </indexterm>
244 </listitem>
245 </varlistentry>
246
247 <varlistentry id="webpinfo">
248 <term><command>webpinfo</command></term>
249 <listitem>
250 <para>
251 prints out the cunk level structure of WebP files along with
252 performing basic integrity checks
253 </para>
254 <indexterm zone="libwebp webpinfo">
255 <primary sortas="b-webpinfo">webpinfo</primary>
256 </indexterm>
257 </listitem>
258 </varlistentry>
259
260 <varlistentry id="webpmux">
261 <term><command>webpmux</command></term>
262 <listitem>
263 <para>
264 creates animated WebP files from non-animated WebP images, extracts
265 frames from animated WebP images, and manages XMP/EXIF metadata and
266 the ICC profile
267 </para>
268 <indexterm zone="libwebp webpmux">
269 <primary sortas="b-webpmux">webpmux</primary>
270 </indexterm>
271 </listitem>
272 </varlistentry>
273
274 <varlistentry id="libwebp-lib">
275 <term><filename class="libraryfile">libwebp.so</filename></term>
276 <listitem>
277 <para>
278 contains the API functions for WebP encoding and decoding
279 </para>
280 <indexterm zone="libwebp libwebp-lib">
281 <primary sortas="c-libwebp">libwebp.so</primary>
282 </indexterm>
283 </listitem>
284 </varlistentry>
285
286 </variablelist>
287
288 </sect2>
289
290</sect1>
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