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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" style="margin: 20px; float: right;" />
25
26<h2> Introduction </h2>
27
28<p> The libcaca library is a graphics library that outputs text instead of
29pixels, so that it can work on older video cards or text terminals. It is not
30unlike the famous <a href="http://aa-project.sourceforge.net/aalib/">AAlib</a>
31library, with the following improvements:
32
33<ul>
34  <li> Unicode support </li>
35  <li> 4096 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.
43
44<p> Libcaca is <a href="http://www.gnu.org/philosophy/free-sw.html">free
45software</a>, and can be used, modified and distributed under the terms of the
46<a href="http://sam.zoy.org/wtfpl/">Do What The Fuck You Want To Public
47License</a>. The logo on this page is copyrighted by Akira Toriyama so if
48anyone fancies drawing a new logo it would be much appreciated. </p>
49
50<h2> Screenshots </h2>
51
52<p> Here are a few libcaca screenshots. </p>
53
54<table cellspacing="5" border="0">
55  <tr>
56    <td align="center">
57      <a href="img/stitch-80x45.png"><img alt="cacaview"
58         width="73" height="90"
59         src="img/tn-stitch-80x45.jpeg" /></a>
60      <br /><small><code>cacaview</code></small>
61    </td>
62    <td align="center">
63      <a href="img/cacaball-80x50.png"><img alt="cacaball"
64         width="101" height="90"
65         src="img/tn-cacaball-80x50.jpeg" /></a>
66      <br /><small><code>cacaball</code></small>
67    </td>
68    <td align="center">
69      <a href="img/cacaplas-80x50.png"><img alt="cacaplas"
70         width="101" height="90"
71         src="img/tn-cacaplas-80x50.jpeg" /></a>
72      <br /><small><code>cacaplas</code></small>
73    </td>
74    <td align="center">
75      <a href="img/truecolor-32x16.png"><img alt="truecolor"
76         width="87" height="90"
77         src="img/tn-truecolor-32x16.jpeg" /></a>
78      <br /><small>TrueColor</small>
79    </td>
80    <td align="center">
81      <a href="img/unicode-80x24.png"><img alt="unicode"
82         width="120" height="75"
83         src="img/tn-unicode-80x24.jpeg" /></a>
84      <br /><small>Unicode</small>
85    </td>
86  </tr>
87</table>
88
89<p> See also the various export formats:
90  <a href="export.png">PNG</a> (through TGA),
91  <a href="export.html">HTML</a>,
92  <a href="export.svg">SVG</a>,
93  <a href="export.ps">PostScript</a>.
94</p>
95
96<h2> Where is the old libcaca page? </h2>
97
98<p> libcaca is currently undergoing a massive rewrite, and as such all
99previous patches and code examples are broken. Until this is done I have
100decided to put most of this page offline. </p>
101
102<p> By the way, the old libcaca (all versions up to 0.9) was under the
103restrictive LGPL license. Though I got permission from all copyright holders
104to relicence the current codebase under the WTFPL, such a permission is not
105retroactive and you should consider old versions as still covered by the LGPL.
106</p>
107
108<h2> Developers </h2>
109
110<p> Important links: </p>
111
112<ul>
113  <li> Mailing-list: <a
114  href="mailto:libcaca&#64;lists.zoy.org">libcaca&#64;lists.zoy.org</a>
115  (To subscribe, send an email to <a
116  href="mailto:ecartis&#64;lists.zoy.org">ecartis&#64;lists.zoy.org</a>
117  containing the words "<code>subscribe libcaca</code>". To unsubscribe, just
118  use "<code>unsubscribe libcaca</code>".) </li>
119
120  <li> Mailing-list <a href="threads.html">archives</a> </li>
121
122  <li> Subversion repository: <code>svn://svn.zoy.org/libcaca/trunk</code> </li>
123
124  <li> Subversion
125  <a href="/cgi-bin/viewcvs.cgi/trunk/?root=libcaca">web interface</a> </li>
126</ul>
127
128<!--
129<p> Here are my first libcaca attempts. The first image is,
130<code>cacaview</code>, the libcaca image viewer. Then, two
131screenshots of my first port of an application to libcaca: the <a
132href="http://www.videolan.org/vlc/">VLC</a> media player. The last
133screenshots are from <code>cacafire</code> (the libcaca port of aafire) and
134<code>cacaball</code> (a mini metaballs demo). </p>
135
136<table cellspacing="5" border="0">
137  <tr>
138    <td align="center">
139      <a href="caca-stitch.png"><img alt="cacaview"
140         width="78" height="90"
141         src="tn-caca-stitch.jpeg" /><br /><code>cacaview</code></a>
142    </td>
143    <td align="center">
144      <a href="caca-vlc.png"><img alt="VLC playing the Matrix: Revolutions"
145         width="120" height="74"
146         src="tn-caca-vlc.jpeg" /><br />VLC media player</a>
147    </td>
148    <td align="center">
149      <a href="caca-vlc3.png"><img alt="VLC playing a Dolby trailer"
150         width="120" height="74"
151         src="tn-caca-vlc3.jpeg" /><br />VLC media player</a>
152    </td>
153    <td align="center">
154      <a href="caca-fire.png"><img alt="cacafire"
155         width="120" height="87"
156         src="tn-caca-fire.jpeg" /><br /><code>cacafire</code></a>
157    </td>
158    <td align="center">
159      <a href="caca-ball.png"><img alt="cacaball"
160         width="104" height="90"
161         src="tn-caca-ball.jpeg" /><br /><code>cacaball</code></a>
162    </td>
163  </tr>
164</table>
165
166<p> As with all image processing applications, I needed the obligatory <a
167href="http://www-2.cs.cmu.edu/~chuck/lennapg/">Lenna</a> samples. From
168left to right: the currently in development Floyd-Steinberg dithering, the
169antialiasing introduced in libcaca 0.5, the new renderer in libcaca 0.2, no
170dithering, ordered dithering, random dithering. </p>
171
172<table cellspacing="5" border="0">
173  <tr>
174    <td align="center">
175      <a href="lenna-fs.png"><img alt="Lenna (Floyd-Steinberg)"
176         width="87" height="90"
177         src="tn-lenna-fs.jpeg" /><br />Floyd-Steinberg</a>
178    </td>
179    <td align="center">
180      <a href="lenna-antialias.png"><img alt="Lenna (antialiased)"
181         width="97" height="90"
182         src="tn-lenna-antialias.jpeg" /><br />antialiasing</a>
183    </td>
184    <td align="center">
185      <a href="lenna-new.png"><img alt="Lenna (new renderer)"
186         width="99" height="90"
187         src="tn-lenna-new.jpeg" /><br />new renderer</a>
188    </td>
189    <td align="center">
190      <a href="lenna-nodither.png"><img alt="Lenna (no dithering)"
191         width="99" height="90"
192         src="tn-lenna-nodither.jpeg" /><br />no dithering</a>
193    </td>
194    <td align="center">
195      <a href="lenna-ordered.png"><img alt="Lenna (ordered dithering)"
196         width="99" height="90"
197         src="tn-lenna-ordered.jpeg" /><br />ordered dithering</a>
198    </td>
199    <td align="center">
200      <a href="lenna-random.png"><img alt="Lenna (random dithering)"
201         width="99" height="90"
202         src="tn-lenna-random.jpeg" /><br />random dithering</a>
203    </td>
204  </tr>
205</table>
206
207<p> Here are a few examples of my libcaca patch for libSDL. Once there is a
208libcaca backend for <a href="http://www.libsdl.org">libSDL</a>, any program
209using SDL can automatically benefit from libcaca’s rendering routines. These
210examples show <a href="http://www.frozen-bubble.org/">Frozen Bubble</a>, the
211<a href="http://sabre.cobite.com/">SABRE</a> flight simulator, and the famous
212<a href="http://www.idsoftware.com/games/doom/">Doom</a>. Frozen Bubble is
213fully playable, but SABRE and Doom aren’t much due to the Ctrl and Shift keys
214not being recognized (see the TODO list about that). </p>
215
216<table cellspacing="5" border="0">
217  <tr>
218    <td align="center">
219      <a href="caca-fb.png"><img alt="ASCII art Frozen Bubble"
220         width="120" height="90"
221         src="tn-caca-fb.jpeg" /><br />Frozen Bubble</a>
222    </td>
223    <td align="center">
224      <a href="caca-sabre.png"><img alt="the SABRE flight simulator"
225         width="120" height="90"
226         src="tn-caca-sabre.jpeg" /><br />SABRE</a>
227    </td>
228    <td align="center">
229      <a href="caca-doom.png"><img alt="the Doom splash screen in ASCII art"
230         width="120" height="90"
231         src="tn-caca-doom.jpeg" /><br />Doom splash screen</a>
232    </td>
233    <td align="center">
234      <a href="caca-doom2.png"><img alt="Doom in ASCII art"
235         width="120" height="90"
236         src="tn-caca-doom2.jpeg" /><br />first Doom level</a>
237    </td>
238  </tr>
239</table>
240
241<h2> Download libcaca </h2>
242
243<p> Latest libcaca release is <a
244href="libcaca-0.9.tar.gz">libcaca-0.9.tar.gz</a> (216KB) / <a
245href="libcaca-0.9.tar.bz2">libcaca-0.9.tar.bz2</a> (172KB). See the <a
246href="NEWS">NEWS</a> and <a href="ChangeLog">ChangeLog</a> files. </p>
247
248<p> libcaca is already in the Debian sid distribution. Debian woody users or
249sid users in a hurry may use one of the following apt sources: (sorry, sarge
250is not supported yet) </p>
251
252<table class="leftmenu" cellspacing="5" cellpadding="0">
253  <tr>
254    <td class="nowrap" valign="top">
255      <code>
256        deb http://sam.zoy.org/projects/debian woody main<br />
257        deb-src http://sam.zoy.org/projects/debian woody main<br />
258        <br />
259        deb http://sam.zoy.org/projects/debian sid main<br />
260        deb-src http://sam.zoy.org/projects/debian sid main<br />
261      </code>
262    </td>
263  </tr>
264</table>
265
266<p> Users of RPM-based distributions (Red Hat, Fedora, Mandrake) may find RPM
267packages on the <a href="http://yarrow.freshrpms.net/rpm.html?id=552">Fresh
268RPMs</a> page. If no package is available, you are encouraged
269to build packages for your system using this SRPM (<a
270href="libcaca-0.9-1.src.rpm">libcaca-0.9-1.src.rpm</a>, 176KB) and this simple
271command line: </p>
272
273<table class="leftmenu" cellspacing="5" cellpadding="0">
274  <tr>
275    <td class="nowrap" valign="top">
276      <code>rpm -<!>-rebuild libcaca-0.9-1.src.rpm</code>
277    </td>
278  </tr>
279</table>
280
281<p> BSD users should see the <a
282href="http://www.netbsd.org/packages/graphics/libcaca/README.html">NetBSD port
283page</a> and the <a href="http://www.freshports.org/graphics/libcaca/">FreeBSD
284port page</a> (I am not aware of an OpenBSD port yet, but <a
285href="http://news.gw.com/openbsd.ports/15502">this email</a> has
286information on it), Gentoo users may find information on the <a
287href="http://gentoo-portage.com/browse-program.php?program=6273">Gentoo
288portage</a> and Slackware users have a package on <a
289href="http://www.linuxpackages.net/pkg_details.php?id=2144">linuxpackages.net</a>.
290</p>
291
292<p> A Windows zip archive containing the libcaca demos can be downloaded here:
293<a href="libcaca-win32-0.9.zip">libcaca-win32-0.9.zip</a> (100KB). </p>
294
295<h2> Patch for libSDL </h2>
296
297<p> This simple patch was quickly hacked from the AAlib video
298driver. Apply it to the libSDL sources and configuree libSDL with
299<code>-<!>-enable-video-caca</code>. Then use the <code>SDL_VIDEODRIVER</code>
300environment variable to run your SDL programs with libcaca output, for
301instance Frozen Bubble: </p>
302
303<table class="leftmenu" cellspacing="5" cellpadding="0">
304  <tr>
305    <td class="nowrap" valign="top">
306      <code>SDL_VIDEODRIVER=caca frozen-bubble</code>
307    </td>
308  </tr>
309</table>
310
311<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>
312
313<h2> Patches for VLC, xine, mplayer... </h2>
314
315<p> The libcaca patch for the <a href="http://www.videolan.org/vlc/">VLC</a>
316media player was already applied upstream. Check the CVS version. </p>
317
318<p> There is a work in progress for <a href="http://xine.sf.net/">xine</a>
319called cacaxine (see <a href="http://sourceforge.net/mailarchive/forum.php?thread_id=3605187&amp;forum_id=7131">this email</a>). Zeeshan Ali wrote a
320<a href="http://gstreamer.sf.net/">GStreamer</a> plugin. I am not
321aware of an <a href="http://mplayerhq.hu/">MPlayer</a> patch yet (but you
322should not be using MPlayer anyway, because it sucks). </p>
323
324<h2> Documentation </h2>
325
326<p> See the <a href="doc/index.html">HTML documentation</a>. </p>
327
328<h2> Development </h2>
329
330<p> The mailing-list for libcaca users and developers is <a
331href="mailto:libcaca&#64;lists.zoy.org">libcaca&#64;lists.zoy.org</a>.
332To subscribe, send an email to <a
333href="mailto:ecartis&#64;lists.zoy.org">ecartis&#64;lists.zoy.org</a>
334containing the words "<code>subscribe libcaca</code>". To unsubscribe, just
335use "<code>unsubscribe libcaca</code>". </p>
336
337<p> Please report bugs and make suggestions to <a
338href="mailto:libcaca&#64;lists.zoy.org">libcaca&#64;lists.zoy.org</a> and
339don’t forget to check the <a href="threads.html">mailing-list archives</a>.
340</p>
341
342<p> The libcaca development is managed using <a
343href="http://subversion.tigris.org">Subversion</a>. The
344<code>svn://svn.zoy.org/libcaca/</code> repository can be browsed using the <a
345href="/cgi-bin/viewcvs.cgi/trunk/?root=libcaca">web interface</a>, or directly
346with the Subversion client. For instance, to retrieve the main trunk, use this
347command: </p>
348
349<table class="leftmenu" cellspacing="5" cellpadding="0">
350  <tr>
351    <td class="nowrap" valign="top">
352      <code>svn co svn://svn.zoy.org/libcaca/trunk libcaca-trunk</code>
353    </td>
354  </tr>
355</table>
356
357<p> To retrieve a specific tag, e.g. 0.3, use this: </p>
358
359<table class="leftmenu" cellspacing="5" cellpadding="0">
360  <tr>
361    <td class="nowrap" valign="top">
362      <code>svn co svn://svn.zoy.org/libcaca/tags/0.3 libcaca-0.3</code>
363    </td>
364  </tr>
365</table>
366-->
367
368<h2> Why? </h2>
369
370<blockquote><p>
371Que dites-vous ?... C’est inutile ?... Je le sais !
372<br />Mais on ne se bat pas dans l’espoir du succès !
373<br />Non ! non, c’est bien plus beau lorsque c’est inutile !
374<br /><small> -- Edmond Rostand, <i>Cyrano de Bergerac</i> </small>
375</p></blockquote>
376
377<p> I am perfectly aware that libcaca is the waste of time it looks to be. No
378need to tell me about that. I urge you to read Théophile Gautier’s preface to
379<i>Mademoiselle de Maupin</i>, which also gives an excellent explanation for
380the name “libcaca”: </p>
381
382<blockquote><p>
383Il n’y a rien de vraiment beau que ce qui ne peut servir à rien ; tout ce
384qui est utile est laid ; car c’est l’expression de quelque besoin ; et ceux
385de l’homme sont ignobles et dégoûtants, comme sa pauvre et infirme nature. -
386L’endroit le plus utile d’une maison, ce sont les latrines.
387</p></blockquote>
388
389<p> As for the name “libcucul”, please refer to the pioneer of modernist
390Polish fiction: </p>
391
392<blockquote><p>
393Mais contre le cucul, il n’y a pas de refuge. Courez après moi
394si vous voulez, je m’enfuis la gueule entre les mains. Et voilà,
395tralala, Zut à celui qui le lira !
396<br /><small> -- Witold Gombrowicz, <i>Ferdydurke</i> </small>
397</p></blockquote>
398
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