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1<?php header("Content-Type: text/html; charset=utf-8"); ?>
2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
3       "http://www.w3.org/TR/xhtml1/DTD/xhtml11.dtd">
4
5<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
6
7<head>
8   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
9   <meta name="GENERATOR" content="vim" />
10   <meta name="Author" content="sam@zoy.org (Sam Hocevar)" />
11   <meta name="Description" content="libcaca - Colour AsCii Art library" />
12   <meta name="Keywords" content="libcaca, ASCII, ASCII ART, console, text mode, ncurses, slang, AAlib" />
13   <title>libcaca - Colour AsCii Art library</title>
14   <link rel="icon" type="image/x-icon" href="/favicon.ico" />
15   <link rel="shortcut icon" type="image/x-icon" href="/favicon.ico" />
16   <link rel="stylesheet" type="text/css" href="/main.css" />
17</head>
18
19<body>
20
21<?php include($_SERVER["DOCUMENT_ROOT"]."/header.inc"); ?>
22
23<img src="logo-caca.png" width="128" height="128"
24     alt="libcaca logo" class="caca" />
25
26<h2> Introduction </h2>
27
28<p> <i>libcaca</i> is a graphics library that outputs text instead of pixels,
29so that it can work on older video cards or text terminals. It is not unlike
30the famous <a href="http://aa-project.sourceforge.net/aalib/">AAlib</a>
31library, with the following improvements: </p>
32
33<ul>
34  <li> Unicode support </li>
35  <li> 2048 available colours (some devices can only handle 16) </li>
36  <li> dithering of colour images </li>
37  <li> advanced text canvas operations (blitting, rotations) </li>
38</ul>
39
40<p> Libcaca works in a text terminal (and should thus work on all Unix
41systems including Mac OS X) using the S-Lang or ncurses libraries. It also
42works natively on DOS and Windows. </p>
43
44<p> Libcaca was written by Sam Hocevar &lt;<a
45href="mailto:sam@zoy.org">sam@zoy.org</a>&gt; and Jean-Yves Lamoureux
46&lt;<a href="mailto:jylam@lnxscene.org">jylam@lnxscene.org</a>&gt;. It is
47<a href="http://www.gnu.org/philosophy/free-sw.html">free software</a>,
48and can be used, modified and distributed under the terms of the <a
49href="http://sam.zoy.org/wtfpl/">Do What The Fuck You Want To Public
50License</a>. </p>
51
52<p style="text-align: center;">
53  <a href="http://www.ohloh.net/projects/9011?ref=WidgetProjectThinBadge"><img src="http://www.ohloh.net/projects/9011/widgets/project_thin_badge.gif" width="100" height="16" alt="libcaca Ohloh metrics" /></a>
54  <a href="http://www.ohloh.net/projects/9018?ref=WidgetProjectThinBadge"><img src="http://www.ohloh.net/projects/9018/widgets/project_thin_badge.gif" width="100" height="16" alt="toilet Ohloh metrics" /></a>
55</p>
56
57<h2> News </h2>
58
59<ul>
60  <li> <b>1 Apr 2008</b>: libcaca to be <a href="http://blog.thebehrens.net/2008/04/01/new-highly-portable-canvas-backend/">OpenOffice.org’s official multiplatform rendering backend</a> </li>
61  <li> <b>24 Feb 2008</b>: we are now using <a href="/wiki">Trac</a>! </li>
62  <li> <b>24 Jan 2008</b>: <a href="/labs/img2oric.html">img2oric</a>, the
63       first Caca Labs piece of research software </li>
64  <li> <b>28 Nov 2007</b>: libcaca 0.99.beta13 </li>
65  <li> <b>24 Oct 2007</b>: Report on <a href="/cacacon07/">CacaCon’07</a>, the
66       first international libcaca conference. </li>
67  <li> <b>30 Sep 2007</b>: libcaca 0.99.beta12 </li>
68<!-- old news
69  <li> <b>16 Nov 2006</b>: libcaca 0.99.beta11 </li>
70  <li> <b>16 Nov 2006</b>: <a href="/toilet.html">TOIlet</a> 0.1 </li>
71  <li> <b>12 Nov 2006</b>: libcaca 0.99.beta10 </p>
72  <li> <b>6 Nov 2006</b>: libcaca 0.99.beta9 </p>
73  <li> <b>22 Oct 2006</b>: libcaca 0.99.beta8 </p>
74  <li> <b>4 Oct 2006</b>: libcaca 0.99.beta7 </p>
75-->
76</ul>
77
78<img src="img/sample.png" width="128" height="128"
79     alt="libcaca rendering sample" class="caca" />
80
81<h2> Screenshots </h2>
82
83<p> Here are a few <i>libcaca</i> screenshots. </p>
84
85<table cellspacing="5" border="0">
86  <tr>
87    <td align="center">
88      <a href="img/stitch-80x45.png"><img alt="cacaview"
89         width="73" height="90"
90         src="img/tn-stitch-80x45.jpeg" /></a>
91      <br /><small><code>cacaview</code></small>
92    </td>
93    <td align="center">
94      <a href="img/cacaball-80x50.png"><img alt="cacaball"
95         width="101" height="90"
96         src="img/tn-cacaball-80x50.jpeg" /></a>
97      <br /><small><code>cacaball</code></small>
98    </td>
99    <td align="center">
100      <a href="img/cacaplas-80x50.png"><img alt="cacaplas"
101         width="101" height="90"
102         src="img/tn-cacaplas-80x50.jpeg" /></a>
103      <br /><small><code>cacaplas</code></small>
104    </td>
105    <td align="center">
106      <a href="img/truecolor-32x16.png"><img alt="truecolor"
107         width="87" height="90"
108         src="img/tn-truecolor-32x16.jpeg" /></a>
109      <br /><small>TrueColor</small>
110    </td>
111    <td align="center">
112    </td>
113  </tr>
114  <tr>
115    <td align="center">
116      <a href="img/unicode-80x24.png"><img alt="unicode"
117         width="120" height="75"
118         src="img/tn-unicode-80x24.jpeg" /></a>
119      <br /><small>Unicode</small>
120    </td>
121    <td align="center">
122      <a href="img/swallow-80x32.png"><img alt="swallow"
123         width="120" height="81"
124         src="img/tn-swallow-80x32.jpeg" /></a>
125      <br /><small>swallowing applications</small>
126    </td>
127    <td align="center">
128      <a href="img/rotate.png"><img alt="rotation"
129         width="75" height="90"
130         src="img/tn-rotate.jpeg" /></a>
131      <br /><small>canvas rotation</small>
132    </td>
133    <td align="center">
134    </td>
135    <td align="center">
136    </td>
137  </tr>
138</table>
139
140<p> See also the various export formats, generated from an old
141  <a href="lc-mw1.ans">ANSI file</a>:
142  <a href="export.png">PNG</a> (through TGA),
143  <a href="export.html">HTML</a>,
144  <a href="export.svg">SVG</a>,
145  <a href="export.ps">PostScript</a>.
146</p>
147
148<!--
149<p> Here are my first libcaca attempts. The first image is,
150<code>cacaview</code>, the libcaca image viewer. Then, two
151screenshots of my first port of an application to libcaca: the <a
152href="http://www.videolan.org/vlc/">VLC</a> media player. The last
153screenshots are from <code>cacafire</code> (the libcaca port of aafire) and
154<code>cacaball</code> (a mini metaballs demo). </p>
155
156<table cellspacing="5" border="0">
157  <tr>
158    <td align="center">
159      <a href="caca-stitch.png"><img alt="cacaview"
160         width="78" height="90"
161         src="tn-caca-stitch.jpeg" /><br /><code>cacaview</code></a>
162    </td>
163    <td align="center">
164      <a href="caca-vlc.png"><img alt="VLC playing the Matrix: Revolutions"
165         width="120" height="74"
166         src="tn-caca-vlc.jpeg" /><br />VLC media player</a>
167    </td>
168    <td align="center">
169      <a href="caca-vlc3.png"><img alt="VLC playing a Dolby trailer"
170         width="120" height="74"
171         src="tn-caca-vlc3.jpeg" /><br />VLC media player</a>
172    </td>
173    <td align="center">
174      <a href="caca-fire.png"><img alt="cacafire"
175         width="120" height="87"
176         src="tn-caca-fire.jpeg" /><br /><code>cacafire</code></a>
177    </td>
178    <td align="center">
179      <a href="caca-ball.png"><img alt="cacaball"
180         width="104" height="90"
181         src="tn-caca-ball.jpeg" /><br /><code>cacaball</code></a>
182    </td>
183  </tr>
184</table>
185
186<p> As with all image processing applications, I needed the obligatory <a
187href="http://www-2.cs.cmu.edu/~chuck/lennapg/">Lenna</a> samples. From
188left to right: the currently in development Floyd-Steinberg dithering, the
189antialiasing introduced in libcaca 0.5, the new renderer in libcaca 0.2, no
190dithering, ordered dithering, random dithering. </p>
191
192<table cellspacing="5" border="0">
193  <tr>
194    <td align="center">
195      <a href="lenna-fs.png"><img alt="Lenna (Floyd-Steinberg)"
196         width="87" height="90"
197         src="tn-lenna-fs.jpeg" /><br />Floyd-Steinberg</a>
198    </td>
199    <td align="center">
200      <a href="lenna-antialias.png"><img alt="Lenna (antialiased)"
201         width="97" height="90"
202         src="tn-lenna-antialias.jpeg" /><br />antialiasing</a>
203    </td>
204    <td align="center">
205      <a href="lenna-new.png"><img alt="Lenna (new renderer)"
206         width="99" height="90"
207         src="tn-lenna-new.jpeg" /><br />new renderer</a>
208    </td>
209    <td align="center">
210      <a href="lenna-nodither.png"><img alt="Lenna (no dithering)"
211         width="99" height="90"
212         src="tn-lenna-nodither.jpeg" /><br />no dithering</a>
213    </td>
214    <td align="center">
215      <a href="lenna-ordered.png"><img alt="Lenna (ordered dithering)"
216         width="99" height="90"
217         src="tn-lenna-ordered.jpeg" /><br />ordered dithering</a>
218    </td>
219    <td align="center">
220      <a href="lenna-random.png"><img alt="Lenna (random dithering)"
221         width="99" height="90"
222         src="tn-lenna-random.jpeg" /><br />random dithering</a>
223    </td>
224  </tr>
225</table>
226
227<p> Here are a few examples of my libcaca patch for libSDL. Once there is a
228libcaca backend for <a href="http://www.libsdl.org">libSDL</a>, any program
229using SDL can automatically benefit from libcaca’s rendering routines. These
230examples show <a href="http://www.frozen-bubble.org/">Frozen Bubble</a>, the
231<a href="http://sabre.cobite.com/">SABRE</a> flight simulator, and the famous
232<a href="http://www.idsoftware.com/games/doom/">Doom</a>. Frozen Bubble is
233fully playable, but SABRE and Doom aren’t much due to the Ctrl and Shift keys
234not being recognized (see the TODO list about that). </p>
235
236<table cellspacing="5" border="0">
237  <tr>
238    <td align="center">
239      <a href="caca-fb.png"><img alt="ASCII art Frozen Bubble"
240         width="120" height="90"
241         src="tn-caca-fb.jpeg" /><br />Frozen Bubble</a>
242    </td>
243    <td align="center">
244      <a href="caca-sabre.png"><img alt="the SABRE flight simulator"
245         width="120" height="90"
246         src="tn-caca-sabre.jpeg" /><br />SABRE</a>
247    </td>
248    <td align="center">
249      <a href="caca-doom.png"><img alt="the Doom splash screen in ASCII art"
250         width="120" height="90"
251         src="tn-caca-doom.jpeg" /><br />Doom splash screen</a>
252    </td>
253    <td align="center">
254      <a href="caca-doom2.png"><img alt="Doom in ASCII art"
255         width="120" height="90"
256         src="tn-caca-doom2.jpeg" /><br />first Doom level</a>
257    </td>
258  </tr>
259</table>
260
261<h2> Download libcaca </h2>
262
263<p> libcaca is already in the Debian sid distribution. Debian woody users or
264sid users in a hurry may use one of the following apt sources: (sorry, sarge
265is not supported yet) </p>
266
267<table class="leftmenu" cellspacing="5" cellpadding="0">
268  <tr>
269    <td class="nowrap" valign="top">
270      <code>
271        deb http://sam.zoy.org/projects/debian woody main<br />
272        deb-src http://sam.zoy.org/projects/debian woody main<br />
273        <br />
274        deb http://sam.zoy.org/projects/debian sid main<br />
275        deb-src http://sam.zoy.org/projects/debian sid main<br />
276      </code>
277    </td>
278  </tr>
279</table>
280
281<p> Users of RPM-based distributions (Red Hat, Fedora, Mandrake) may find RPM
282packages on the <a href="http://yarrow.freshrpms.net/rpm.html?id=552">Fresh
283RPMs</a> page. If no package is available, you are encouraged
284to build packages for your system using this SRPM (<a
285href="libcaca-0.9-1.src.rpm">libcaca-0.9-1.src.rpm</a>, 176KB) and this simple
286command line: </p>
287
288<table class="leftmenu" cellspacing="5" cellpadding="0">
289  <tr>
290    <td class="nowrap" valign="top">
291      <code>rpm -<!>-rebuild libcaca-0.9-1.src.rpm</code>
292    </td>
293  </tr>
294</table>
295
296<p> BSD users should see the <a
297href="http://www.netbsd.org/packages/graphics/libcaca/README.html">NetBSD port
298page</a> and the <a href="http://www.freshports.org/graphics/libcaca/">FreeBSD
299port page</a> (I am not aware of an OpenBSD port yet, but <a
300href="http://news.gw.com/openbsd.ports/15502">this email</a> has
301information on it), Gentoo users may find information on the <a
302href="http://gentoo-portage.com/browse-program.php?program=6273">Gentoo
303portage</a> and Slackware users have a package on <a
304href="http://www.linuxpackages.net/pkg_details.php?id=2144">linuxpackages.net</a>.
305</p>
306
307<h2> Patch for libSDL </h2>
308
309<p> This simple patch was quickly hacked from the AAlib video
310driver. Apply it to the libSDL sources and configuree libSDL with
311<code>-<!>-enable-video-caca</code>. Then use the <code>SDL_VIDEODRIVER</code>
312environment variable to run your SDL programs with libcaca output, for
313instance Frozen Bubble: </p>
314
315<table class="leftmenu" cellspacing="5" cellpadding="0">
316  <tr>
317    <td class="nowrap" valign="top">
318      <code>SDL_VIDEODRIVER=caca frozen-bubble</code>
319    </td>
320  </tr>
321</table>
322
323<p> Download <a href="patch-libsdl1.2-libcaca0.7.diff">patch-libsdl1.2-libcaca0.7.diff</a> (to be used with the Debian unstable SDL sources and libcaca 0.7. </p>
324
325<h2> Patches for VLC, xine, mplayer... </h2>
326
327<p> The libcaca patch for the <a href="http://www.videolan.org/vlc/">VLC</a>
328media player was already applied upstream. Check the CVS version. </p>
329
330<p> There is a work in progress for <a href="http://xine.sf.net/">xine</a>
331called cacaxine (see <a href="http://sourceforge.net/mailarchive/forum.php?thread_id=3605187&amp;forum_id=7131">this email</a>). Zeeshan Ali wrote a
332<a href="http://gstreamer.sf.net/">GStreamer</a> plugin. I am not
333aware of an <a href="http://mplayerhq.hu/">MPlayer</a> patch yet (but you
334should not be using MPlayer anyway, because it sucks). </p>
335
336<h2> Development </h2>
337
338-->
339
340<h2> Why? </h2>
341
342<blockquote><p>
343Que dites-vous ?... C’est inutile ?... Je le sais !
344<br />Mais on ne se bat pas dans l’espoir du succès !
345<br />Non ! non, c’est bien plus beau lorsque c’est inutile !
346<br /><small> -- Edmond Rostand, <i>Cyrano de Bergerac</i> </small>
347</p></blockquote>
348
349<p> I am perfectly aware that <i>libcaca</i> is the waste of time it looks to
350be. No need to tell me about that. I urge you to read Théophile Gautier’s
351preface to <i>Mademoiselle de Maupin</i>, which also gives an excellent
352explanation for the name “libcaca”: </p>
353
354<blockquote><p>
355Il n’y a rien de vraiment beau que ce qui ne peut servir à rien ; tout ce
356qui est utile est laid ; car c’est l’expression de quelque besoin ; et ceux
357de l’homme sont ignobles et dégoûtants, comme sa pauvre et infirme nature. -
358L’endroit le plus utile d’une maison, ce sont les latrines.
359</p></blockquote>
360
361<p> As for the name “libcucul”, please refer to the pioneer of modernist
362Polish fiction: </p>
363
364<blockquote><p>
365Mais contre le cucul, il n’y a pas de refuge. Courez après moi
366si vous voulez, je m’enfuis la gueule entre les mains. Et voilà,
367tralala, Zut à celui qui le lira !
368<br /><small> -- Witold Gombrowicz, <i>Ferdydurke</i> </small>
369</p></blockquote>
370
371<?php $rev = '$Id: index.html 2270 2008-04-01 11:16:56Z sam $';
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