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);
71 /* Restore default for SIGCHLD in case parent ignores it. */
72 signal (SIGCHLD, SIG_DFL);
76 /* Activate malloc checking routines to detect heap corruptions. */
77 setenv ("MALLOC_CHECK_", "2", 1);
79 /* Disable the ugly Gnome crash dialog so that we properly segfault */
80 setenv ("GNOME_DISABLE_CRASH_DIALOG", "1", 1);
83 /* Make Xlib hide visuals with an alphachannel. Ensure that Qt4 will not
84 * use the alpha channel for the embedded video window. */
85 setenv ("XLIB_SKIP_ARGB_VISUALS", "1", 1);
87 /* Clear the X.Org startup notification ID. Otherwise the UI might try to
88 * change the environment while the process is multi-threaded. That could
89 * crash. Screw you X.Org. Next time write a thread-safe specification. */
90 unsetenv ("DESKTOP_STARTUP_ID");
93 #ifndef ALLOW_RUN_AS_ROOT
96 fprintf (stderr, "VLC is not supposed to be run as root. Sorry.\n"
97 "If you need to use real-time priorities and/or privileged TCP ports\n"
98 "you can use %s-wrapper (make sure it is Set-UID root and\n"
99 "cannot be run by non-trusted users first).\n", ppsz_argv[0]);
104 setlocale (LC_ALL, "");
107 /* This clutters OSX GUI error logs */
108 fprintf( stderr, "VLC media player %s (revision %s)\n",
109 libvlc_get_version(), libvlc_get_changeset() );
112 /* Synchronously intercepted POSIX signals.
114 * In a threaded program such as VLC, the only sane way to handle signals
115 * is to block them in all threads but one - this is the only way to
116 * predict which thread will receive them. If any piece of code depends
117 * on delivery of one of this signal it is intrinsically not thread-safe
118 * and MUST NOT be used in VLC, whether we like it or not.
119 * There is only one exception: if the signal is raised with
120 * pthread_kill() - we do not use this in LibVLC but some pthread
121 * implementations use them internally. You should really use conditions
122 * for thread synchronization anyway.
124 * Signal that request a clean shutdown, and force an unclean shutdown
125 * if they are triggered again 2+ seconds later.
126 * We have to handle SIGTERM cleanly because of daemon mode.
127 * Note that we set the signals after the vlc_create call. */
128 static const int sigs[] = {
129 SIGINT, SIGHUP, SIGQUIT, SIGTERM,
130 /* Signals that cause a no-op:
131 * - SIGPIPE might happen with sockets and would crash VLC. It MUST be
132 * blocked by any LibVLC-dependent application, not just VLC.
133 * - SIGCHLD comes after exec*() (such as httpd CGI support) and must
134 * be dequeued to cleanup zombie processes.
141 for (unsigned i = 0; i < sizeof (sigs) / sizeof (sigs[0]); i++)
142 sigaddset (&set, sigs[i]);
144 sigaddset (&set, SIGRTMIN);
146 struct sigaction act = { .sa_handler = dummy_handler, };
147 sigaction (SIGRTMIN, &act, NULL);
151 /* Block all these signals */
152 pthread_sigmask (SIG_BLOCK, &set, NULL);
153 sigdelset (&set, SIGPIPE);
154 sigdelset (&set, SIGCHLD);
156 /* Note that FromLocale() can be used before libvlc is initialized */
157 const char *argv[i_argc + 4];
160 argv[argc++] = "--no-ignore-config";
161 argv[argc++] = "--user-agent=\"VLC media player\"";
163 argv[argc++] = FromLocale ("--plugin-path="TOP_BUILDDIR"/modules");
166 argv[argc++] = FromLocale ("--data-path="TOP_SRCDIR"/share");
171 /* When VLC.app is run by double clicking in Mac OS X, the 2nd arg
172 * is the PSN - process serial number (a unique PID-ish thingie)
173 * still ok for real Darwin & when run from command line
174 * for example -psn_0_9306113 */
175 if(i_argc >= 2 && !strncmp( ppsz_argv[1] , "-psn" , 4 ))
178 for (; i < i_argc; i++)
179 if ((argv[argc++] = FromLocale (ppsz_argv[i])) == NULL)
183 vlc_enable_override ();
185 /* Initialize libvlc */
186 libvlc_instance_t *vlc = libvlc_new (argc, argv);
190 if (libvlc_add_intf (vlc, "signals"))
191 pthread_sigmask (SIG_UNBLOCK, &set, NULL);
192 #if !defined (HAVE_MAEMO)
193 libvlc_add_intf (vlc, "globalhotkeys,none");
195 if (libvlc_add_intf (vlc, NULL) == 0)
197 libvlc_playlist_play (vlc, -1, 0, NULL);
200 libvlc_release (vlc);
203 for (int i = 1; i < argc; i++)
204 LocaleFree (argv[i]);
207 /* Avoid crash in KIO scheduler cleanup. */
208 /* This is ugly, but we get way too many crash reports due to this. */
209 if (dlopen ("libkio.so.5", RTLD_LAZY|RTLD_LOCAL|RTLD_NOLOAD) != NULL)
211 fprintf (stderr, "KIO present. Unclean shutdown!\n"
212 " (see http://bugs.kde.org/show_bug.cgi?id=234484 for details)\n");