src/vlc.c

   1 /*****************************************************************************
   2  * vlc.c: the vlc player
   3  *****************************************************************************
   4  * Copyright (C) 1998-2004 the VideoLAN team
   5  * $Id$
   6  *
   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
  12  *
  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.
  17  *
  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.
  22  *
  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  *****************************************************************************/
  27
  28 #include "config.h"
  29
  30 #include <stdio.h>                                              /* fprintf() */
  31 #include <stdlib.h>                                  /* putenv(), strtol(),  */
  32 #ifdef HAVE_SIGNAL_H
  33 #   include <signal.h>                            /* SIGHUP, SIGINT, SIGKILL */
  34 #endif
  35 #ifdef HAVE_TIME_H
  36 #   include <time.h>                                               /* time() */
  37 #endif
  38 #ifdef HAVE_PTHREAD_H
  39 #   include <pthread.h>
  40 #endif
  41
  42 #include <vlc/vlc.h>
  43
  44 #ifdef WIN32
  45 #include <windows.h>
  46 extern void __wgetmainargs(int *argc, wchar_t ***wargv, wchar_t ***wenviron,
  47                            int expand_wildcards, int *startupinfo);
  48 #endif
  49
  50 /*****************************************************************************
  51  * Local prototypes.
  52  *****************************************************************************/
  53 #if !defined(WIN32) && !defined(UNDER_CE)
  54 static void *SigHandler  ( void *set );
  55 #endif
  56
  57 /*****************************************************************************
  58  * main: parse command line, start interface and spawn threads.
  59  *****************************************************************************/
  60 int main( int i_argc, char *ppsz_argv[] )
  61 {
  62     int i_ret;
  63
  64 #ifndef __APPLE__
  65     /* This clutters OSX GUI error logs */
  66     fprintf( stderr, "VLC media player %s\n", VLC_Version() );
  67 #endif
  68
  69 #ifdef HAVE_PUTENV
  70 #   ifdef DEBUG
  71     /* Activate malloc checking routines to detect heap corruptions. */
  72     putenv( (char*)"MALLOC_CHECK_=2" );
  73
  74     /* Disable the ugly Gnome crash dialog so that we properly segfault */
  75     putenv( (char *)"GNOME_DISABLE_CRASH_DIALOG=1" );
  76 #   endif
  77
  78     /* If the user isn't using VLC_VERBOSE, set it to 0 by default */
  79     if( getenv( "VLC_VERBOSE" ) == NULL )
  80     {
  81         putenv( (char *)"VLC_VERBOSE=0" );
  82     }
  83 #endif
  84
  85 #if defined (HAVE_GETEUID) && !defined (SYS_BEOS)
  86     /* FIXME: rootwrap (); */
  87 #endif
  88
  89     /* Create a libvlc structure */
  90     i_ret = VLC_Create();
  91     if( i_ret < 0 )
  92     {
  93         return i_ret;
  94     }
  95
  96 #if !defined(WIN32) && !defined(UNDER_CE)
  97     /* Synchronously intercepted signals. Thy request a clean shutdown,
  98      * and force an unclean shutdown if they are triggered again 2+ seconds
  99      * later. We have to handle SIGTERM cleanly because of daemon mode.
 100      * Note that we set the signals after the vlc_create call. */
 101     static const int sigs[] = { SIGINT, SIGHUP, SIGQUIT, SIGTERM };
 102     /* Ignored signals */
 103     static const int ignored[] = { SIGALRM, SIGPIPE };
 104
 105     sigset_t set;
 106     pthread_t sigth;
 107
 108     sigemptyset (&set);
 109     for (unsigned i = 0; i < sizeof (sigs) / sizeof (sigs[0]); i++)
 110         sigaddset (&set, sigs[i]);
 111     for (unsigned i = 0; i < sizeof (ignored) / sizeof (ignored[0]); i++)
 112         sigaddset (&set, ignored[i]);
 113
 114     /* Block all these signals */
 115     pthread_sigmask (SIG_BLOCK, &set, NULL);
 116
 117     for (unsigned i = 0; i < sizeof (ignored) / sizeof (ignored[0]); i++)
 118         sigdelset (&set, ignored[i]);
 119
 120     pthread_create (&sigth, NULL, SigHandler, &set);
 121 #endif
 122
 123 #ifdef WIN32
 124     /* Replace argv[1..n] with unicode for Windows NT and above */
 125     if( GetVersion() < 0x80000000 )
 126     {
 127         wchar_t **wargv, **wenvp;
 128         int i,i_wargc;
 129         int si = { 0 };
 130         __wgetmainargs(&i_wargc, &wargv, &wenvp, 0, &si);
 131
 132         for( i = 1; i < i_wargc; i++ )
 133         {
 134             int len = WideCharToMultiByte(CP_UTF8, 0, wargv[i], -1, NULL, 0, NULL, NULL);
 135             if( len > 0 )
 136             {
 137                 if( len > 1 ) {
 138                     char *utf8arg = (char *)malloc(len);
 139                     if( NULL != utf8arg )
 140                     {
 141                         WideCharToMultiByte(CP_UTF8, 0, wargv[i], -1, utf8arg, len, NULL, NULL);
 142                         ppsz_argv[i] = utf8arg;
 143                     }
 144                     else
 145                     {
 146                         /* failed!, quit */
 147                         return -1;
 148                     }
 149                 }
 150                 else
 151                 {
 152                     ppsz_argv[i] = "";
 153                 }
 154             }
 155             else
 156             {
 157                 /* failed!, quit */
 158                 return -1;
 159             }
 160         }
 161     }
 162 #endif
 163
 164     /* Initialize libvlc */
 165     i_ret = VLC_Init( 0, i_argc, ppsz_argv );
 166     if( i_ret < 0 )
 167     {
 168         VLC_Destroy( 0 );
 169         return i_ret == VLC_EEXITSUCCESS ? 0 : i_ret;
 170     }
 171
 172     i_ret = VLC_AddIntf( 0, NULL, VLC_TRUE, VLC_TRUE );
 173
 174 #if !defined(WIN32) && !defined(UNDER_CE)
 175     pthread_cancel (sigth);
 176     pthread_join (sigth, NULL);
 177 #endif
 178
 179     /* Finish the threads */
 180     VLC_CleanUp( 0 );
 181
 182     /* Destroy the libvlc structure */
 183     VLC_Destroy( 0 );
 184
 185     return i_ret;
 186 }
 187
 188 #if !defined(WIN32) && !defined(UNDER_CE)
 189 /*****************************************************************************
 190  * SigHandler: system signal handler
 191  *****************************************************************************
 192  * This thread receives all handled signals synchronously.
 193  * It tries to end the program in a clean way.
 194  *****************************************************************************/
 195 static void *SigHandler( void *data )
 196 {
 197     const sigset_t *set = (sigset_t *)data;
 198     time_t abort_time = 0;
 199     vlc_bool_t b_die = VLC_FALSE;
 200
 201     for (;;)
 202     {
 203         int i_signal, state;
 204         (void)sigwait (set, &i_signal);
 205
 206         /* Once a signal has been trapped, the termination sequence will be
 207          * armed and subsequent signals will be ignored to avoid sending
 208          * signals to a libvlc structure having been destroyed */
 209
 210         pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &state);
 211         if( !b_die )
 212         {
 213             b_die = VLC_TRUE;
 214             abort_time = time( NULL );
 215
 216             fprintf( stderr, "signal %d received, terminating vlc - do it "
 217                             "again in case it gets stuck\n", i_signal );
 218
 219             /* Acknowledge the signal received */
 220             VLC_Die( 0 );
 221         }
 222         else if( time( NULL ) > abort_time + 2 )
 223         {
 224             /* If user asks again 1 or 2 seconds later, die badly */
 225             pthread_sigmask (SIG_UNBLOCK, set, NULL);
 226             fprintf( stderr, "user insisted too much, dying badly\n" );
 227             abort();
 228         }
 229         pthread_setcancelstate (state, NULL);
 230     }
 231     /* Never reached */
 232 }
 233 #endif
 234
 235 #if defined(UNDER_CE)
 236 #   if defined( _MSC_VER ) && defined( UNDER_CE )
 237 #       include "vlc_common.h"
 238 #   endif
 239 /*****************************************************************************
 240  * WinMain: parse command line, start interface and spawn threads. (WinCE only)
 241  *****************************************************************************/
 242 int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
 243                     LPTSTR lpCmdLine, int nCmdShow )
 244 {
 245     char **argv, psz_cmdline[MAX_PATH];
 246     int argc, i_ret;
 247
 248     WideCharToMultiByte( CP_ACP, 0, lpCmdLine, -1,
 249                          psz_cmdline, MAX_PATH, NULL, NULL );
 250
 251     argv = vlc_parse_cmdline( psz_cmdline, &argc );
 252     argv = realloc( argv, (argc + 1) * sizeof(char *) );
 253     if( !argv ) return -1;
 254
 255     if( argc ) memmove( argv + 1, argv, argc * sizeof(char *) );
 256     argv[0] = ""; /* Fake program path */
 257
 258     i_ret = main( argc + 1, argv );
 259
 260     /* No need to free the argv memory */
 261     return i_ret;
 262 }
 263 #endif