1 /*****************************************************************************
2 * main.c: main vlc source
3 * Includes the main() function for vlc. Parses command line, start interface
5 *****************************************************************************
6 * Copyright (C) 1998, 1999, 2000 VideoLAN
7 * $Id: main.c,v 1.89 2001/04/28 03:36:25 sam Exp $
9 * Authors: Vincent Seguin <seguin@via.ecp.fr>
10 * Samuel Hocevar <sam@zoy.org>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
32 #include <signal.h> /* SIGHUP, SIGINT, SIGKILL */
33 #include <stdio.h> /* sprintf() */
35 #ifdef HAVE_GETOPT_LONG
37 # include <getopt.h> /* getopt() */
40 # include "GNUgetopt/getopt.h"
44 # include <mach/mach.h> /* Altivec detection */
45 # include <mach/mach_error.h> /* some day the header files||compiler *
46 will define it for us */
47 # include <mach/bootstrap.h>
51 #include <errno.h> /* ENOMEM */
52 #include <stdlib.h> /* getenv(), strtol(), */
53 #include <string.h> /* strerror() */
60 #include "tests.h" /* TestCPU() */
63 #include "stream_control.h"
64 #include "input_ext-intf.h"
67 #include "intf_playlist.h"
68 #include "interface.h"
70 #include "audio_output.h"
73 #include "video_output.h"
76 # include "beos_specific.h"
80 # include "darwin_specific.h"
83 #include "netutils.h" /* network_ChannelJoin */
87 /*****************************************************************************
88 * Command line options constants. If something is changed here, be sure that
89 * GetConfiguration and Usage are also changed.
90 *****************************************************************************/
92 /* Long options return values - note that values corresponding to short options
93 * chars, and in general any regular char, should be avoided */
94 #define OPT_NOAUDIO 150
95 #define OPT_STEREO 151
98 #define OPT_NOVIDEO 160
99 #define OPT_DISPLAY 161
100 #define OPT_WIDTH 162
101 #define OPT_HEIGHT 163
102 #define OPT_COLOR 164
103 #define OPT_FULLSCREEN 165
104 #define OPT_OVERLAY 166
106 #define OPT_CHANNELS 170
107 #define OPT_SERVER 171
109 #define OPT_BROADCAST 173
111 #define OPT_INPUT 180
112 #define OPT_MOTION 181
116 #define OPT_SYNCHRO 190
117 #define OPT_WARNING 191
118 #define OPT_VERSION 192
126 static const struct option longopts[] =
128 /* name, has_arg, flag, val */
130 /* General/common options */
131 { "help", 0, 0, 'h' },
132 { "longhelp", 0, 0, 'H' },
133 { "version", 0, 0, OPT_VERSION },
135 /* Interface options */
136 { "intf", 1, 0, 'I' },
137 { "warning", 1, 0, OPT_WARNING },
140 { "noaudio", 0, 0, OPT_NOAUDIO },
141 { "aout", 1, 0, 'A' },
142 { "stereo", 0, 0, OPT_STEREO },
143 { "mono", 0, 0, OPT_MONO },
146 { "novideo", 0, 0, OPT_NOVIDEO },
147 { "vout", 1, 0, 'V' },
148 { "display", 1, 0, OPT_DISPLAY },
149 { "width", 1, 0, OPT_WIDTH },
150 { "height", 1, 0, OPT_HEIGHT },
151 { "grayscale", 0, 0, 'g' },
152 { "color", 0, 0, OPT_COLOR },
153 { "motion", 1, 0, OPT_MOTION },
154 { "idct", 1, 0, OPT_IDCT },
155 { "yuv", 1, 0, OPT_YUV },
156 { "fullscreen", 0, 0, OPT_FULLSCREEN },
157 { "overlay", 0, 0, OPT_OVERLAY },
160 { "dvdtitle", 1, 0, 't' },
161 { "dvdchapter", 1, 0, 'T' },
162 { "dvdangle", 1, 0, 'u' },
163 { "dvdaudio", 1, 0, 'a' },
164 { "dvdchannel", 1, 0, 'c' },
165 { "dvdsubtitle", 1, 0, 's' },
168 { "input", 1, 0, OPT_INPUT },
169 { "channels", 0, 0, OPT_CHANNELS },
170 { "server", 1, 0, OPT_SERVER },
171 { "port", 1, 0, OPT_PORT },
172 { "broadcast", 1, 0, OPT_BROADCAST },
174 /* Synchro options */
175 { "synchro", 1, 0, OPT_SYNCHRO },
180 static const char *psz_shortopts = "hHvgt:T:u:a:s:c:I:A:V:";
182 /*****************************************************************************
183 * Global variable program_data - this is the one and only, see main.h
184 *****************************************************************************/
187 /*****************************************************************************
189 *****************************************************************************/
190 static int GetConfiguration ( int *pi_argc, char *ppsz_argv[],
192 static int GetFilenames ( int i_argc, char *ppsz_argv[] );
193 static void Usage ( int i_fashion );
194 static void Version ( void );
196 static void InitSignalHandler ( void );
197 static void SimpleSignalHandler ( int i_signal );
198 static void FatalSignalHandler ( int i_signal );
200 static int CPUCapabilities ( void );
202 /*****************************************************************************
203 * main: parse command line, start interface and spawn threads
204 *****************************************************************************
205 * Steps during program execution are:
206 * -configuration parsing and messages interface initialization
207 * -opening of audio output device and some global modules
208 * -execution of interface, which exit on error or on user request
209 * -closing of audio output device and some global modules
210 * On error, the spawned threads are canceled, and the open devices closed.
211 *****************************************************************************/
212 int main( int i_argc, char *ppsz_argv[], char *ppsz_env[] )
214 main_t main_data; /* root of all data - see main.h */
216 p_main = &main_data; /* set up the global variable */
219 * System specific initialization code
221 #if defined( SYS_BEOS ) || defined( SYS_DARWIN1_3 )
222 system_Create( &i_argc, ppsz_argv, ppsz_env );
225 p_main->i_cpu_capabilities = CPUCapabilities();
228 * Test if our code is likely to run on this CPU
230 #if defined( __pentium__ ) || defined( __pentiumpro__ )
231 if( ! TestCPU( CPU_CAPABILITY_586 ) )
233 fprintf( stderr, "error: this program needs a Pentium CPU,\n"
234 "please try a version without Pentium support\n" );
240 if( ! TestCPU( CPU_CAPABILITY_MMX ) )
242 fprintf( stderr, "error: this program needs MMX extensions,\n"
243 "please try a version without MMX support\n" );
249 * Initialize messages interface
251 p_main->p_msg = intf_MsgCreate();
252 if( !p_main->p_msg ) /* start messages interface */
254 fprintf( stderr, "error: can't initialize messages interface (%s)\n",
259 intf_MsgImm( COPYRIGHT_MESSAGE );
264 if( GetConfiguration( &i_argc, ppsz_argv, ppsz_env ) ) /* parse cmd line */
271 * Initialize playlist and get commandline files
273 p_main->p_playlist = intf_PlaylistCreate( );
274 if( !p_main->p_playlist )
276 intf_ErrMsg( "playlist error: playlist initialization failed" );
280 intf_PlaylistInit( p_main->p_playlist );
283 * Get input filenames given as commandline arguments
285 GetFilenames( i_argc, ppsz_argv );
288 * Initialize module bank
290 p_main->p_bank = module_CreateBank( );
291 if( !p_main->p_bank )
293 intf_ErrMsg( "module error: module bank initialization failed" );
294 intf_PlaylistDestroy( p_main->p_playlist );
298 module_InitBank( p_main->p_bank );
301 * Initialize shared resources and libraries
303 if( p_main->b_channels && network_ChannelCreate() )
305 /* On error during Channels initialization, switch off channels */
306 intf_Msg( "Channels initialization failed : "
307 "Channel management is deactivated" );
308 p_main->b_channels = 0;
314 p_main->p_intf = intf_Create();
315 if( !p_main->p_intf )
317 intf_ErrMsg( "intf error: interface initialization failed" );
318 module_DestroyBank( p_main->p_bank );
319 intf_PlaylistDestroy( p_main->p_playlist );
325 * Set signal handling policy for all threads
330 * Open audio device and start aout thread
332 if( p_main->b_audio )
334 p_main->p_aout = aout_CreateThread( NULL );
335 if( p_main->p_aout == NULL )
337 /* On error during audio initialization, switch off audio */
338 intf_ErrMsg( "aout error: audio initialization failed,"
339 " audio is deactivated" );
345 * Open video device and start vout thread
347 if( p_main->b_video )
349 p_main->p_vout = vout_CreateThread( NULL );
350 if( p_main->p_vout == NULL )
352 /* On error during video initialization, switch off video */
353 intf_ErrMsg( "vout error: video initialization failed,"
354 " video is deactivated" );
359 /* Flush messages before entering the main loop */
363 * This is the main loop
365 p_main->p_intf->pf_run( p_main->p_intf );
367 intf_Destroy( p_main->p_intf );
372 if( p_main->b_video )
374 vout_DestroyThread( p_main->p_vout, NULL );
380 if( p_main->b_audio )
382 aout_DestroyThread( p_main->p_aout, NULL );
386 * Go back into channel 0 which is the network
388 if( p_main->b_channels )
390 network_ChannelJoin( COMMON_CHANNEL );
396 module_DestroyBank( p_main->p_bank );
401 intf_PlaylistDestroy( p_main->p_playlist );
404 * System specific cleaning code
406 #if defined( SYS_BEOS ) || defined( SYS_DARWIN1_3 )
411 * Terminate messages interface and program
413 intf_Msg( "intf: program terminated" );
419 /*****************************************************************************
420 * main_GetIntVariable: get the int value of an environment variable
421 *****************************************************************************
422 * This function is used to read some default parameters in modules.
423 *****************************************************************************/
424 int main_GetIntVariable( char *psz_name, int i_default )
426 char * psz_env; /* environment value */
427 char * psz_end; /* end of parsing index */
428 long int i_value; /* value */
430 psz_env = getenv( psz_name );
433 i_value = strtol( psz_env, &psz_end, 0 );
434 if( (*psz_env != '\0') && (*psz_end == '\0') )
442 /*****************************************************************************
443 * main_GetPszVariable: get the string value of an environment variable
444 *****************************************************************************
445 * This function is used to read some default parameters in modules.
446 *****************************************************************************/
447 char * main_GetPszVariable( char *psz_name, char *psz_default )
451 psz_env = getenv( psz_name );
456 return( psz_default );
459 /*****************************************************************************
460 * main_PutPszVariable: set the string value of an environment variable
461 *****************************************************************************
462 * This function is used to set some default parameters in modules. The use of
463 * this function will cause some memory leak: since some systems use the pointer
464 * passed to putenv to store the environment string, it can't be freed.
465 *****************************************************************************/
466 void main_PutPszVariable( char *psz_name, char *psz_value )
470 psz_env = malloc( strlen(psz_name) + strlen(psz_value) + 2 );
471 if( psz_env == NULL )
473 intf_ErrMsg( "intf error: cannot create psz_env (%s)",
478 sprintf( psz_env, "%s=%s", psz_name, psz_value );
479 if( putenv( psz_env ) )
481 intf_ErrMsg( "intf error: cannot putenv (%s)", strerror(errno) );
486 /*****************************************************************************
487 * main_PutIntVariable: set the integer value of an environment variable
488 *****************************************************************************
489 * This function is used to set some default parameters in modules. The use of
490 * this function will cause some memory leak: since some systems use the pointer
491 * passed to putenv to store the environment string, it can't be freed.
492 *****************************************************************************/
493 void main_PutIntVariable( char *psz_name, int i_value )
495 char psz_value[ 256 ]; /* buffer for value */
497 sprintf( psz_value, "%d", i_value );
498 main_PutPszVariable( psz_name, psz_value );
501 /* following functions are local */
503 /*****************************************************************************
504 * GetConfiguration: parse command line
505 *****************************************************************************
506 * Parse command line and configuration file for configuration. If the inline
507 * help is requested, the function Usage() is called and the function returns
508 * -1 (causing main() to exit). The messages interface is initialized at this
509 * stage, but most structures are not allocated, so only environment should
511 *****************************************************************************/
512 static int GetConfiguration( int *pi_argc, char *ppsz_argv[], char *ppsz_env[] )
517 /* Set default configuration and copy arguments */
518 p_main->i_argc = *pi_argc;
519 p_main->ppsz_argv = ppsz_argv;
520 p_main->ppsz_env = ppsz_env;
524 p_main->b_channels = 0;
526 p_main->i_warning_level = 4;
528 /* Get the executable name (similar to the basename command) */
529 p_main->psz_arg0 = p_tmp = ppsz_argv[ 0 ];
534 p_main->psz_arg0 = ++p_tmp;
543 /* When vlc.app is run by double clicking in Mac OS X, the 2nd arg
544 * is the PSN - process serial number (a unique PID-ish thingie)
545 * still ok for real Darwin & when run from command line */
546 if ( (*pi_argc > 1) && (strncmp( ppsz_argv[ 1 ] , "-psn" , 4 ) == 0) )
547 /* for example -psn_0_9306113 */
549 /* GDMF!... I can't do this or else the MacOSX window server will
550 * not pick up the PSN and not register the app and we crash...
551 * hence the following kludge otherwise we'll get confused w/ argv[1]
552 * being an input file name */
554 ppsz_argv[ 1 ] = NULL;
556 *pi_argc = *pi_argc - 1;
562 /* Parse command line options */
564 while( ( i_cmd = getopt_long( *pi_argc, ppsz_argv,
565 psz_shortopts, longopts, 0 ) ) != EOF )
569 /* General/common options */
570 case 'h': /* -h, --help */
574 case 'H': /* -H, --longhelp */
578 case OPT_VERSION: /* --version */
582 case 'v': /* -v, --verbose */
583 p_main->i_warning_level--;
586 /* Interface warning messages level */
587 case 'I': /* -I, --intf */
588 main_PutPszVariable( INTF_METHOD_VAR, optarg );
590 case OPT_WARNING: /* --warning */
591 intf_ErrMsg( "intf error: `--warning' is deprecated, use `-v'" );
592 p_main->i_warning_level = atoi(optarg);
596 case OPT_NOAUDIO: /* --noaudio */
599 case 'A': /* -A, --aout */
600 main_PutPszVariable( AOUT_METHOD_VAR, optarg );
602 case OPT_STEREO: /* --stereo */
603 main_PutIntVariable( AOUT_STEREO_VAR, 1 );
605 case OPT_MONO: /* --mono */
606 main_PutIntVariable( AOUT_STEREO_VAR, 0 );
610 case OPT_NOVIDEO: /* --novideo */
613 case 'V': /* -V, --vout */
614 main_PutPszVariable( VOUT_METHOD_VAR, optarg );
616 case OPT_DISPLAY: /* --display */
617 main_PutPszVariable( VOUT_DISPLAY_VAR, optarg );
619 case OPT_WIDTH: /* --width */
620 main_PutPszVariable( VOUT_WIDTH_VAR, optarg );
622 case OPT_HEIGHT: /* --height */
623 main_PutPszVariable( VOUT_HEIGHT_VAR, optarg );
625 case 'g': /* -g, --grayscale */
626 main_PutIntVariable( VOUT_GRAYSCALE_VAR, 1 );
628 case OPT_COLOR: /* --color */
629 main_PutIntVariable( VOUT_GRAYSCALE_VAR, 0 );
631 case OPT_FULLSCREEN: /* --fullscreen */
632 main_PutIntVariable( VOUT_FULLSCREEN_VAR, 1 );
634 case OPT_OVERLAY: /* --overlay */
635 main_PutIntVariable( VOUT_OVERLAY_VAR, 1 );
637 case OPT_MOTION: /* --motion */
638 main_PutPszVariable( MOTION_METHOD_VAR, optarg );
640 case OPT_IDCT: /* --idct */
641 main_PutPszVariable( IDCT_METHOD_VAR, optarg );
643 case OPT_YUV: /* --yuv */
644 main_PutPszVariable( YUV_METHOD_VAR, optarg );
649 main_PutIntVariable( INPUT_TITLE_VAR, atoi(optarg) );
652 main_PutIntVariable( INPUT_CHAPTER_VAR, atoi(optarg) );
655 main_PutIntVariable( INPUT_ANGLE_VAR, atoi(optarg) );
658 if ( ! strcmp(optarg, "ac3") )
659 main_PutIntVariable( INPUT_AUDIO_VAR, REQUESTED_AC3 );
660 else if ( ! strcmp(optarg, "lpcm") )
661 main_PutIntVariable( INPUT_AUDIO_VAR, REQUESTED_LPCM );
662 else if ( ! strcmp(optarg, "mpeg") )
663 main_PutIntVariable( INPUT_AUDIO_VAR, REQUESTED_MPEG );
665 main_PutIntVariable( INPUT_AUDIO_VAR, REQUESTED_NOAUDIO );
668 main_PutIntVariable( INPUT_CHANNEL_VAR, atoi(optarg) );
671 main_PutIntVariable( INPUT_SUBTITLE_VAR, atoi(optarg) );
675 case OPT_INPUT: /* --input */
676 main_PutPszVariable( INPUT_METHOD_VAR, optarg );
678 case OPT_CHANNELS: /* --channels */
679 p_main->b_channels = 1;
681 case OPT_SERVER: /* --server */
682 main_PutPszVariable( INPUT_SERVER_VAR, optarg );
684 case OPT_PORT: /* --port */
685 main_PutPszVariable( INPUT_PORT_VAR, optarg );
687 case OPT_BROADCAST: /* --broadcast */
688 main_PutPszVariable( INPUT_BROADCAST_VAR, optarg );
691 /* Synchro options */
693 main_PutPszVariable( VPAR_SYNCHRO_VAR, optarg );
696 /* Internal error: unknown option */
699 intf_ErrMsg( "intf error: unknown option `%s'",
700 ppsz_argv[optind - 1] );
707 if( p_main->i_warning_level < 0 )
709 p_main->i_warning_level = 0;
715 /*****************************************************************************
716 * GetFilenames: parse command line options which are not flags
717 *****************************************************************************
718 * Parse command line for input files.
719 *****************************************************************************/
720 static int GetFilenames( int i_argc, char *ppsz_argv[] )
724 /* We assume that the remaining parameters are filenames */
725 for( i_opt = optind; i_opt < i_argc; i_opt++ )
727 intf_PlaylistAdd( p_main->p_playlist, PLAYLIST_END,
728 ppsz_argv[ i_opt ] );
734 /*****************************************************************************
735 * Usage: print program usage
736 *****************************************************************************
737 * Print a short inline help. Message interface is initialized at this stage.
738 *****************************************************************************/
739 static void Usage( int i_fashion )
742 intf_MsgImm( "Usage: %s [options] [parameters] [file]...",
745 if( i_fashion == USAGE )
747 intf_MsgImm( "Try `%s --help' for more information.",
753 intf_MsgImm( "\nOptions:"
754 "\n -I, --intf <module> \tinterface method"
755 "\n -v, --verbose \tverbose mode (cumulative)"
757 "\n --noaudio \tdisable audio"
758 "\n -A, --aout <module> \taudio output method"
759 "\n --stereo, --mono \tstereo/mono audio"
761 "\n --novideo \tdisable video"
762 "\n -V, --vout <module> \tvideo output method"
763 "\n --display <display> \tdisplay string"
764 "\n --width <w>, --height <h> \tdisplay dimensions"
765 "\n -g, --grayscale \tgrayscale output"
766 "\n --fullscreen \tfullscreen output"
767 "\n --overlay \taccelerated display"
768 "\n --color \tcolor output"
769 "\n --motion <module> \tmotion compensation method"
770 "\n --idct <module> \tIDCT method"
771 "\n --yuv <module> \tYUV method"
772 "\n --synchro <type> \tforce synchro algorithm"
774 "\n -t, --dvdtitle <num> \tchoose DVD title"
775 "\n -T, --dvdchapter <num> \tchoose DVD chapter"
776 "\n -u, --dvdangle <num> \tchoose DVD angle"
777 "\n -a, --dvdaudio <type> \tchoose DVD audio type"
778 "\n -c, --dvdchannel <channel> \tchoose DVD audio channel"
779 "\n -s, --dvdsubtitle <channel> \tchoose DVD subtitle channel"
781 "\n --input \tinput method"
782 "\n --channels \tenable channels"
783 "\n --server <host> \tvideo server address"
784 "\n --port <port> \tvideo server port"
785 "\n --broadcast \tlisten to a broadcast"
787 "\n -h, --help \tprint help and exit"
788 "\n -H, --longhelp \tprint long help and exit"
789 "\n --version \toutput version information and exit" );
791 if( i_fashion == SHORT_HELP )
794 /* Interface parameters */
795 intf_MsgImm( "\nInterface parameters:"
796 "\n " INTF_METHOD_VAR "=<method name> \tinterface method"
797 "\n " INTF_INIT_SCRIPT_VAR "=<filename> \tinitialization script"
798 "\n " INTF_CHANNELS_VAR "=<filename> \tchannels list" );
800 /* Audio parameters */
801 intf_MsgImm( "\nAudio parameters:"
802 "\n " AOUT_METHOD_VAR "=<method name> \taudio method"
803 "\n " AOUT_DSP_VAR "=<filename> \tdsp device path"
804 "\n " AOUT_STEREO_VAR "={1|0} \tstereo or mono output"
805 "\n " AOUT_RATE_VAR "=<rate> \toutput rate" );
807 /* Video parameters */
808 intf_MsgImm( "\nVideo parameters:"
809 "\n " VOUT_METHOD_VAR "=<method name> \tdisplay method"
810 "\n " VOUT_DISPLAY_VAR "=<display name> \tdisplay used"
811 "\n " VOUT_WIDTH_VAR "=<width> \tdisplay width"
812 "\n " VOUT_HEIGHT_VAR "=<height> \tdislay height"
813 "\n " VOUT_FB_DEV_VAR "=<filename> \tframebuffer device path"
814 "\n " VOUT_GRAYSCALE_VAR "={1|0} \tgrayscale or color output"
815 "\n " VOUT_FULLSCREEN_VAR "={1|0} \tfullscreen"
816 "\n " VOUT_OVERLAY_VAR "={1|0} \toverlay"
817 "\n " MOTION_METHOD_VAR "=<method name> \tmotion compensation method"
818 "\n " IDCT_METHOD_VAR "=<method name> \tIDCT method"
819 "\n " YUV_METHOD_VAR "=<method name> \tYUV method"
820 "\n " VPAR_SYNCHRO_VAR "={I|I+|IP|IP+|IPB} \tsynchro algorithm" );
823 intf_MsgImm( "\nDVD parameters:"
824 "\n " INPUT_DVD_DEVICE_VAR "=<device> \tDVD device"
825 "\n " INPUT_TITLE_VAR "=<title> \ttitle number"
826 "\n " INPUT_CHAPTER_VAR "=<chapter> \tchapter number"
827 "\n " INPUT_ANGLE_VAR "=<angle> \tangle number"
828 "\n " INPUT_AUDIO_VAR "={ac3|lpcm|mpeg|off} \taudio type"
829 "\n " INPUT_CHANNEL_VAR "=[0-15] \taudio channel"
830 "\n " INPUT_SUBTITLE_VAR "=[0-31] \tsubtitle channel" );
832 /* Input parameters */
833 intf_MsgImm( "\nInput parameters:"
834 "\n " INPUT_SERVER_VAR "=<hostname> \tvideo server"
835 "\n " INPUT_PORT_VAR "=<port> \tvideo server port"
836 "\n " INPUT_IFACE_VAR "=<interface> \tnetwork interface"
837 "\n " INPUT_BROADCAST_VAR "=<addr> \tbroadcast mode"
838 "\n " INPUT_CHANNEL_SERVER_VAR "=<hostname> \tchannel server"
839 "\n " INPUT_CHANNEL_PORT_VAR "=<port> \tchannel server port" );
843 /*****************************************************************************
844 * Version: print complete program version
845 *****************************************************************************
846 * Print complete program version and build number.
847 *****************************************************************************/
848 static void Version( void )
850 intf_MsgImm( VERSION_MESSAGE
851 "This program comes with NO WARRANTY, to the extent permitted by law.\n"
852 "You may redistribute it under the terms of the GNU General Public License;\n"
853 "see the file named COPYING for details.\n"
854 "Written by the VideoLAN team at Ecole Centrale, Paris." );
857 /*****************************************************************************
858 * InitSignalHandler: system signal handler initialization
859 *****************************************************************************
860 * Set the signal handlers. SIGTERM is not intercepted, because we need at
861 * at least a method to kill the program when all other methods failed, and
862 * when we don't want to use SIGKILL.
863 *****************************************************************************/
864 static void InitSignalHandler( void )
866 /* Termination signals */
868 signal( SIGINT, FatalSignalHandler );
869 signal( SIGHUP, FatalSignalHandler );
870 signal( SIGQUIT, FatalSignalHandler );
873 signal( SIGALRM, SimpleSignalHandler );
874 signal( SIGPIPE, SimpleSignalHandler );
879 /*****************************************************************************
880 * SimpleSignalHandler: system signal handler
881 *****************************************************************************
882 * This function is called when a non fatal signal is received by the program.
883 *****************************************************************************/
884 static void SimpleSignalHandler( int i_signal )
886 /* Acknowledge the signal received */
887 intf_WarnMsg( 0, "intf: ignoring signal %d", i_signal );
891 /*****************************************************************************
892 * FatalSignalHandler: system signal handler
893 *****************************************************************************
894 * This function is called when a fatal signal is received by the program.
895 * It tries to end the program in a clean way.
896 *****************************************************************************/
897 static void FatalSignalHandler( int i_signal )
899 /* Once a signal has been trapped, the termination sequence will be
900 * armed and following signals will be ignored to avoid sending messages
901 * to an interface having been destroyed */
903 signal( SIGINT, SIG_IGN );
904 signal( SIGHUP, SIG_IGN );
905 signal( SIGQUIT, SIG_IGN );
908 /* Acknowledge the signal received */
909 intf_ErrMsgImm( "intf error: signal %d received, exiting", i_signal );
911 /* Try to terminate everything - this is done by requesting the end of the
912 * interface thread */
913 p_main->p_intf->b_die = 1;
916 /*****************************************************************************
917 * CPUCapabilities: list the processors MMX support and other capabilities
918 *****************************************************************************
919 * This function is called to list extensions the CPU may have.
920 *****************************************************************************/
921 static int CPUCapabilities( void )
923 int i_capabilities = CPU_CAPABILITY_NONE;
925 #if defined( SYS_BEOS )
926 i_capabilities |= CPU_CAPABILITY_486
928 | CPU_CAPABILITY_MMX;
930 #elif defined( SYS_DARWIN1_3 )
932 struct host_basic_info hi;
934 host_name_port_t host;
937 char *psz_name, *psz_subname;
939 /* Should 'never' fail? */
940 host = mach_host_self();
942 i_size = sizeof( hi ) / sizeof( int );
943 ret = host_info( host, HOST_BASIC_INFO, ( host_info_t )&hi, &i_size );
945 if( ret != KERN_SUCCESS )
947 intf_ErrMsg( "error: couldn't get CPU information" );
948 return( i_capabilities );
951 slot_name( hi.cpu_type, hi.cpu_subtype, &psz_name, &psz_subname );
952 /* FIXME: need better way to detect newer proccessors.
953 * could do strncmp(a,b,5), but that's real ugly */
954 if( strcmp(psz_name, "ppc7400") || strcmp(psz_name, "ppc7450") )
956 i_capabilities |= CPU_CAPABILITY_ALTIVEC;
959 #elif defined( __i386__ )
960 unsigned int i_eax, i_ebx, i_ecx, i_edx;
963 # define cpuid( a ) \
964 asm volatile ( "cpuid" \
972 /* test for a 486 CPU */
973 asm volatile ( "pushfl\n\t"
975 "movl %%eax, %%ebx\n\t"
976 "xorl $0x200000, %%eax\n\t"
988 return( i_capabilities );
991 i_capabilities |= CPU_CAPABILITY_486;
993 /* the CPU supports the CPUID instruction - get its level */
998 return( i_capabilities );
1001 /* FIXME: this isn't correct, since some 486s have cpuid */
1002 i_capabilities |= CPU_CAPABILITY_586;
1004 /* borrowed from mpeg2dec */
1005 b_amd = ( i_ebx == 0x68747541 ) && ( i_ecx == 0x444d4163 )
1006 && ( i_edx == 0x69746e65 );
1008 /* test for the MMX flag */
1009 cpuid( 0x00000001 );
1011 if( ! (i_edx & 0x00800000) )
1013 return( i_capabilities );
1016 i_capabilities |= CPU_CAPABILITY_MMX;
1018 if( i_edx & 0x02000000 )
1020 i_capabilities |= CPU_CAPABILITY_MMXEXT;
1023 /* test for additional capabilities */
1024 cpuid( 0x80000000 );
1026 if( i_eax < 0x80000001 )
1028 return( i_capabilities );
1031 /* list these additional capabilities */
1032 cpuid( 0x80000001 );
1034 if( i_edx & 0x80000000 )
1036 i_capabilities |= CPU_CAPABILITY_3DNOW;
1039 if( b_amd && ( i_edx & 0x00400000 ) )
1041 i_capabilities |= CPU_CAPABILITY_MMXEXT;
1045 /* default behaviour */
1048 return( i_capabilities );