1 /*****************************************************************************
2 * vlc.c: the VLC player
3 *****************************************************************************
4 * Copyright (C) 1998-2008 the VideoLAN team
7 * Authors: Vincent Seguin <seguin@via.ecp.fr>
8 * Samuel Hocevar <sam@zoy.org>
9 * Gildas Bazin <gbazin@videolan.org>
10 * Derk-Jan Hartman <hartman at videolan dot org>
11 * Lots of other people, see the libvlc AUTHORS file
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
26 *****************************************************************************/
43 extern void LocaleFree (const char *);
44 extern char *FromLocale (const char *);
45 extern void vlc_enable_override (void);
54 static void dummy_handler (int signum)
60 /*****************************************************************************
61 * main: parse command line, start interface and spawn threads.
62 *****************************************************************************/
63 int main( int i_argc, const char *ppsz_argv[] )
65 /* The so-called POSIX-compliant MacOS X reportedly processes SIGPIPE even
66 * if it is blocked in all thread. Also some libraries want SIGPIPE blocked
67 * as they have no clue about signal masks.
68 * Note: this is NOT an excuse for not protecting against SIGPIPE. If
69 * LibVLC runs outside of VLC, we cannot rely on this code snippet. */
70 signal (SIGPIPE, SIG_IGN);
74 /* Activate malloc checking routines to detect heap corruptions. */
75 putenv( (char*)"MALLOC_CHECK_=2" );
77 /* Disable the ugly Gnome crash dialog so that we properly segfault */
78 putenv( (char *)"GNOME_DISABLE_CRASH_DIALOG=1" );
81 /* Make Xlib hide visuals with an alphachannel. Ensure that Qt4 will not
82 * use the alpha channel for the embedded video window. */
83 putenv( (char *)"XLIB_SKIP_ARGB_VISUALS=1" );
86 /* Clear the X.Org startup notification ID. Otherwise the UI might try to
87 * change the environment while the process is multi-threaded. That could
88 * crash. Screw you X.Org. Next time write a thread-safe specification. */
89 unsetenv ("DESKTOP_STARTUP_ID");
92 #ifndef ALLOW_RUN_AS_ROOT
95 fprintf (stderr, "VLC is not supposed to be run as root. Sorry.\n"
96 "If you need to use real-time priorities and/or privileged TCP ports\n"
97 "you can use %s-wrapper (make sure it is Set-UID root and\n"
98 "cannot be run by non-trusted users first).\n", ppsz_argv[0]);
103 setlocale (LC_ALL, "");
106 /* This clutters OSX GUI error logs */
107 fprintf( stderr, "VLC media player %s (revision %s)\n",
108 libvlc_get_version(), libvlc_get_changeset() );
111 /* Synchronously intercepted POSIX signals.
113 * In a threaded program such as VLC, the only sane way to handle signals
114 * is to block them in all threads but one - this is the only way to
115 * predict which thread will receive them. If any piece of code depends
116 * on delivery of one of this signal it is intrinsically not thread-safe
117 * and MUST NOT be used in VLC, whether we like it or not.
118 * There is only one exception: if the signal is raised with
119 * pthread_kill() - we do not use this in LibVLC but some pthread
120 * implementations use them internally. You should really use conditions
121 * for thread synchronization anyway.
123 * Signal that request a clean shutdown, and force an unclean shutdown
124 * if they are triggered again 2+ seconds later.
125 * We have to handle SIGTERM cleanly because of daemon mode.
126 * Note that we set the signals after the vlc_create call. */
127 static const int sigs[] = {
128 SIGINT, SIGHUP, SIGQUIT, SIGTERM,
129 /* Signals that cause a no-op:
130 * - SIGPIPE might happen with sockets and would crash VLC. It MUST be
131 * blocked by any LibVLC-dependent application, not just VLC.
132 * - SIGCHLD comes after exec*() (such as httpd CGI support) and must
133 * be dequeued to cleanup zombie processes.
140 for (unsigned i = 0; i < sizeof (sigs) / sizeof (sigs[0]); i++)
141 sigaddset (&set, sigs[i]);
143 sigaddset (&set, SIGRTMIN);
145 struct sigaction act = { .sa_handler = dummy_handler, };
146 sigaction (SIGRTMIN, &act, NULL);
150 /* Block all these signals */
151 pthread_sigmask (SIG_BLOCK, &set, NULL);
152 sigdelset (&set, SIGPIPE);
153 sigdelset (&set, SIGCHLD);
155 /* Note that FromLocale() can be used before libvlc is initialized */
156 const char *argv[i_argc + 3];
159 argv[argc++] = "--no-ignore-config";
161 argv[argc++] = FromLocale ("--plugin-path="TOP_BUILDDIR"/modules");
164 argv[argc++] = FromLocale ("--data-path="TOP_SRCDIR"/share");
169 /* When VLC.app is run by double clicking in Mac OS X, the 2nd arg
170 * is the PSN - process serial number (a unique PID-ish thingie)
171 * still ok for real Darwin & when run from command line
172 * for example -psn_0_9306113 */
173 if(i_argc >= 2 && !strncmp( ppsz_argv[1] , "-psn" , 4 ))
176 for (; i < i_argc; i++)
177 if ((argv[argc++] = FromLocale (ppsz_argv[i])) == NULL)
181 vlc_enable_override ();
183 /* Initialize libvlc */
184 libvlc_instance_t *vlc = libvlc_new (argc, argv);
188 if (libvlc_add_intf (vlc, "signals"))
189 pthread_sigmask (SIG_UNBLOCK, &set, NULL);
190 #if !defined (HAVE_MAEMO)
191 libvlc_add_intf (vlc, "globalhotkeys,none");
193 if (libvlc_add_intf (vlc, NULL) == 0)
195 libvlc_playlist_play (vlc, -1, 0, NULL);
198 libvlc_release (vlc);
201 for (int i = 1; i < argc; i++)
202 LocaleFree (argv[i]);
205 /* Avoid crash in KIO scheduler cleanup. */
206 /* This is ugly, but we get way too many crash reports due to this. */
207 if (dlopen ("libkio.so.5", RTLD_LAZY|RTLD_LOCAL|RTLD_NOLOAD) != NULL)
209 fprintf (stderr, "KIO present. Unclean shutdown!\n"
210 " (see http://bugs.kde.org/show_bug.cgi?id=234484 for details)\n");