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 1.91 2001/05/01 04:18:18 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
99 #define OPT_NOVIDEO 160
100 #define OPT_DISPLAY 161
101 #define OPT_WIDTH 162
102 #define OPT_HEIGHT 163
103 #define OPT_COLOR 164
104 #define OPT_FULLSCREEN 165
105 #define OPT_OVERLAY 166
107 #define OPT_CHANNELS 170
108 #define OPT_SERVER 171
110 #define OPT_BROADCAST 173
112 #define OPT_INPUT 180
113 #define OPT_MOTION 181
117 #define OPT_SYNCHRO 190
118 #define OPT_WARNING 191
119 #define OPT_VERSION 192
127 static const struct option longopts[] =
129 /* name, has_arg, flag, val */
131 /* General/common options */
132 { "help", 0, 0, 'h' },
133 { "longhelp", 0, 0, 'H' },
134 { "version", 0, 0, OPT_VERSION },
136 /* Interface options */
137 { "intf", 1, 0, 'I' },
138 { "warning", 1, 0, OPT_WARNING },
141 { "noaudio", 0, 0, OPT_NOAUDIO },
142 { "aout", 1, 0, 'A' },
143 { "stereo", 0, 0, OPT_STEREO },
144 { "mono", 0, 0, OPT_MONO },
145 { "spdif", 0, 0, OPT_SPDIF },
148 { "novideo", 0, 0, OPT_NOVIDEO },
149 { "vout", 1, 0, 'V' },
150 { "display", 1, 0, OPT_DISPLAY },
151 { "width", 1, 0, OPT_WIDTH },
152 { "height", 1, 0, OPT_HEIGHT },
153 { "grayscale", 0, 0, 'g' },
154 { "color", 0, 0, OPT_COLOR },
155 { "motion", 1, 0, OPT_MOTION },
156 { "idct", 1, 0, OPT_IDCT },
157 { "yuv", 1, 0, OPT_YUV },
158 { "fullscreen", 0, 0, OPT_FULLSCREEN },
159 { "overlay", 0, 0, OPT_OVERLAY },
162 { "dvdtitle", 1, 0, 't' },
163 { "dvdchapter", 1, 0, 'T' },
164 { "dvdangle", 1, 0, 'u' },
165 { "dvdaudio", 1, 0, 'a' },
166 { "dvdchannel", 1, 0, 'c' },
167 { "dvdsubtitle", 1, 0, 's' },
170 { "input", 1, 0, OPT_INPUT },
171 { "channels", 0, 0, OPT_CHANNELS },
172 { "server", 1, 0, OPT_SERVER },
173 { "port", 1, 0, OPT_PORT },
174 { "broadcast", 1, 0, OPT_BROADCAST },
176 /* Synchro options */
177 { "synchro", 1, 0, OPT_SYNCHRO },
182 static const char *psz_shortopts = "hHvgt:T:u:a:s:c:I:A:V:";
184 /*****************************************************************************
185 * Global variable program_data - these are the only ones, see main.h and
187 *****************************************************************************/
191 /*****************************************************************************
193 *****************************************************************************/
194 static int GetConfiguration ( int *pi_argc, char *ppsz_argv[],
196 static int GetFilenames ( int i_argc, char *ppsz_argv[] );
197 static void Usage ( int i_fashion );
198 static void Version ( void );
200 static void InitSignalHandler ( void );
201 static void SimpleSignalHandler ( int i_signal );
202 static void FatalSignalHandler ( int i_signal );
204 static int CPUCapabilities ( void );
206 /*****************************************************************************
207 * main: parse command line, start interface and spawn threads
208 *****************************************************************************
209 * Steps during program execution are:
210 * -configuration parsing and messages interface initialization
211 * -opening of audio output device and some global modules
212 * -execution of interface, which exit on error or on user request
213 * -closing of audio output device and some global modules
214 * On error, the spawned threads are canceled, and the open devices closed.
215 *****************************************************************************/
216 int main( int i_argc, char *ppsz_argv[], char *ppsz_env[] )
218 main_t main_data; /* root of all data - see main.h */
221 p_main = &main_data; /* set up the global variables */
222 p_bank = &module_bank;
225 * Initialize the main structure
227 p_main->i_cpu_capabilities = CPUCapabilities();
229 p_main->p_aout = NULL;
230 p_main->p_vout = NULL;
233 * System specific initialization code
235 #if defined( SYS_BEOS ) || defined( SYS_DARWIN1_3 )
236 system_Create( &i_argc, ppsz_argv, ppsz_env );
240 * Test if our code is likely to run on this CPU
242 #if defined( __pentium__ ) || defined( __pentiumpro__ )
243 if( ! TestCPU( CPU_CAPABILITY_586 ) )
245 fprintf( stderr, "error: this program needs a Pentium CPU,\n"
246 "please try a version without Pentium support\n" );
252 if( ! TestCPU( CPU_CAPABILITY_MMX ) )
254 fprintf( stderr, "error: this program needs MMX extensions,\n"
255 "please try a version without MMX support\n" );
261 * Initialize messages interface
263 p_main->p_msg = intf_MsgCreate();
264 if( !p_main->p_msg ) /* start messages interface */
266 fprintf( stderr, "error: can't initialize messages interface (%s)\n",
271 intf_MsgImm( COPYRIGHT_MESSAGE );
276 if( GetConfiguration( &i_argc, ppsz_argv, ppsz_env ) ) /* parse cmd line */
283 * Initialize playlist and get commandline files
285 p_main->p_playlist = intf_PlaylistCreate();
286 if( !p_main->p_playlist )
288 intf_ErrMsg( "playlist error: playlist initialization failed" );
292 intf_PlaylistInit( p_main->p_playlist );
295 * Get input filenames given as commandline arguments
297 GetFilenames( i_argc, ppsz_argv );
300 * Initialize module bank
305 * Initialize shared resources and libraries
307 if( p_main->b_channels && network_ChannelCreate() )
309 /* On error during Channels initialization, switch off channels */
310 intf_Msg( "Channels initialization failed : "
311 "Channel management is deactivated" );
312 p_main->b_channels = 0;
318 p_main->p_intf = intf_Create();
319 if( !p_main->p_intf )
321 intf_ErrMsg( "intf error: interface initialization failed" );
323 intf_PlaylistDestroy( p_main->p_playlist );
329 * Set signal handling policy for all threads
334 * This is the main loop
336 p_main->p_intf->pf_run( p_main->p_intf );
339 * Finished, destroy the interface
341 intf_Destroy( p_main->p_intf );
344 * Close all video devices
346 if( p_main->p_vout != NULL )
348 vout_DestroyThread( p_main->p_vout, NULL );
352 * Close all audio devices
354 if( p_main->p_aout != NULL )
356 aout_DestroyThread( p_main->p_aout, NULL );
360 * Go back into channel 0 which is the network
362 if( p_main->b_channels )
364 network_ChannelJoin( COMMON_CHANNEL );
375 intf_PlaylistDestroy( p_main->p_playlist );
378 * System specific cleaning code
380 #if defined( SYS_BEOS ) || defined( SYS_DARWIN1_3 )
385 * Terminate messages interface and program
387 intf_Msg( "intf: program terminated" );
393 /*****************************************************************************
394 * main_GetIntVariable: get the int value of an environment variable
395 *****************************************************************************
396 * This function is used to read some default parameters in modules.
397 *****************************************************************************/
398 int main_GetIntVariable( char *psz_name, int i_default )
400 char * psz_env; /* environment value */
401 char * psz_end; /* end of parsing index */
402 long int i_value; /* value */
404 psz_env = getenv( psz_name );
407 i_value = strtol( psz_env, &psz_end, 0 );
408 if( (*psz_env != '\0') && (*psz_end == '\0') )
416 /*****************************************************************************
417 * main_GetPszVariable: get the string value of an environment variable
418 *****************************************************************************
419 * This function is used to read some default parameters in modules.
420 *****************************************************************************/
421 char * main_GetPszVariable( char *psz_name, char *psz_default )
425 psz_env = getenv( psz_name );
430 return( psz_default );
433 /*****************************************************************************
434 * main_PutPszVariable: set the string value of an environment variable
435 *****************************************************************************
436 * This function is used to set some default parameters in modules. The use of
437 * this function will cause some memory leak: since some systems use the pointer
438 * passed to putenv to store the environment string, it can't be freed.
439 *****************************************************************************/
440 void main_PutPszVariable( char *psz_name, char *psz_value )
444 psz_env = malloc( strlen(psz_name) + strlen(psz_value) + 2 );
445 if( psz_env == NULL )
447 intf_ErrMsg( "intf error: cannot create psz_env (%s)",
452 sprintf( psz_env, "%s=%s", psz_name, psz_value );
453 if( putenv( psz_env ) )
455 intf_ErrMsg( "intf error: cannot putenv (%s)", strerror(errno) );
460 /*****************************************************************************
461 * main_PutIntVariable: set the integer value of an environment variable
462 *****************************************************************************
463 * This function is used to set some default parameters in modules. The use of
464 * this function will cause some memory leak: since some systems use the pointer
465 * passed to putenv to store the environment string, it can't be freed.
466 *****************************************************************************/
467 void main_PutIntVariable( char *psz_name, int i_value )
469 char psz_value[ 256 ]; /* buffer for value */
471 sprintf( psz_value, "%d", i_value );
472 main_PutPszVariable( psz_name, psz_value );
475 /* following functions are local */
477 /*****************************************************************************
478 * GetConfiguration: parse command line
479 *****************************************************************************
480 * Parse command line and configuration file for configuration. If the inline
481 * help is requested, the function Usage() is called and the function returns
482 * -1 (causing main() to exit). The messages interface is initialized at this
483 * stage, but most structures are not allocated, so only environment should
485 *****************************************************************************/
486 static int GetConfiguration( int *pi_argc, char *ppsz_argv[], char *ppsz_env[] )
491 /* Set default configuration and copy arguments */
492 p_main->i_argc = *pi_argc;
493 p_main->ppsz_argv = ppsz_argv;
494 p_main->ppsz_env = ppsz_env;
498 p_main->b_channels = 0;
500 p_main->i_warning_level = 4;
502 /* Get the executable name (similar to the basename command) */
503 p_main->psz_arg0 = p_tmp = ppsz_argv[ 0 ];
508 p_main->psz_arg0 = ++p_tmp;
517 /* When vlc.app is run by double clicking in Mac OS X, the 2nd arg
518 * is the PSN - process serial number (a unique PID-ish thingie)
519 * still ok for real Darwin & when run from command line */
520 if ( (*pi_argc > 1) && (strncmp( ppsz_argv[ 1 ] , "-psn" , 4 ) == 0) )
521 /* for example -psn_0_9306113 */
523 /* GDMF!... I can't do this or else the MacOSX window server will
524 * not pick up the PSN and not register the app and we crash...
525 * hence the following kludge otherwise we'll get confused w/ argv[1]
526 * being an input file name */
528 ppsz_argv[ 1 ] = NULL;
530 *pi_argc = *pi_argc - 1;
536 /* Parse command line options */
538 while( ( i_cmd = getopt_long( *pi_argc, ppsz_argv,
539 psz_shortopts, longopts, 0 ) ) != EOF )
543 /* General/common options */
544 case 'h': /* -h, --help */
548 case 'H': /* -H, --longhelp */
552 case OPT_VERSION: /* --version */
556 case 'v': /* -v, --verbose */
557 p_main->i_warning_level--;
560 /* Interface warning messages level */
561 case 'I': /* -I, --intf */
562 main_PutPszVariable( INTF_METHOD_VAR, optarg );
564 case OPT_WARNING: /* --warning */
565 intf_ErrMsg( "intf error: `--warning' is deprecated, use `-v'" );
566 p_main->i_warning_level = atoi(optarg);
570 case OPT_NOAUDIO: /* --noaudio */
573 case 'A': /* -A, --aout */
574 main_PutPszVariable( AOUT_METHOD_VAR, optarg );
576 case OPT_STEREO: /* --stereo */
577 main_PutIntVariable( AOUT_STEREO_VAR, 1 );
579 case OPT_MONO: /* --mono */
580 main_PutIntVariable( AOUT_STEREO_VAR, 0 );
582 case OPT_SPDIF: /* --spdif */
583 main_PutIntVariable( AOUT_SPDIF_VAR, 1 );
587 case OPT_NOVIDEO: /* --novideo */
590 case 'V': /* -V, --vout */
591 main_PutPszVariable( VOUT_METHOD_VAR, optarg );
593 case OPT_DISPLAY: /* --display */
594 main_PutPszVariable( VOUT_DISPLAY_VAR, optarg );
596 case OPT_WIDTH: /* --width */
597 main_PutPszVariable( VOUT_WIDTH_VAR, optarg );
599 case OPT_HEIGHT: /* --height */
600 main_PutPszVariable( VOUT_HEIGHT_VAR, optarg );
602 case 'g': /* -g, --grayscale */
603 main_PutIntVariable( VOUT_GRAYSCALE_VAR, 1 );
605 case OPT_COLOR: /* --color */
606 main_PutIntVariable( VOUT_GRAYSCALE_VAR, 0 );
608 case OPT_FULLSCREEN: /* --fullscreen */
609 main_PutIntVariable( VOUT_FULLSCREEN_VAR, 1 );
611 case OPT_OVERLAY: /* --overlay */
612 main_PutIntVariable( VOUT_OVERLAY_VAR, 1 );
614 case OPT_MOTION: /* --motion */
615 main_PutPszVariable( MOTION_METHOD_VAR, optarg );
617 case OPT_IDCT: /* --idct */
618 main_PutPszVariable( IDCT_METHOD_VAR, optarg );
620 case OPT_YUV: /* --yuv */
621 main_PutPszVariable( YUV_METHOD_VAR, optarg );
626 main_PutIntVariable( INPUT_TITLE_VAR, atoi(optarg) );
629 main_PutIntVariable( INPUT_CHAPTER_VAR, atoi(optarg) );
632 main_PutIntVariable( INPUT_ANGLE_VAR, atoi(optarg) );
635 if ( ! strcmp(optarg, "ac3") )
636 main_PutIntVariable( INPUT_AUDIO_VAR, REQUESTED_AC3 );
637 else if ( ! strcmp(optarg, "lpcm") )
638 main_PutIntVariable( INPUT_AUDIO_VAR, REQUESTED_LPCM );
639 else if ( ! strcmp(optarg, "mpeg") )
640 main_PutIntVariable( INPUT_AUDIO_VAR, REQUESTED_MPEG );
642 main_PutIntVariable( INPUT_AUDIO_VAR, REQUESTED_NOAUDIO );
645 main_PutIntVariable( INPUT_CHANNEL_VAR, atoi(optarg) );
648 main_PutIntVariable( INPUT_SUBTITLE_VAR, atoi(optarg) );
652 case OPT_INPUT: /* --input */
653 main_PutPszVariable( INPUT_METHOD_VAR, optarg );
655 case OPT_CHANNELS: /* --channels */
656 p_main->b_channels = 1;
658 case OPT_SERVER: /* --server */
659 main_PutPszVariable( INPUT_SERVER_VAR, optarg );
661 case OPT_PORT: /* --port */
662 main_PutPszVariable( INPUT_PORT_VAR, optarg );
664 case OPT_BROADCAST: /* --broadcast */
665 main_PutPszVariable( INPUT_BROADCAST_VAR, optarg );
668 /* Synchro options */
670 main_PutPszVariable( VPAR_SYNCHRO_VAR, optarg );
673 /* Internal error: unknown option */
676 intf_ErrMsg( "intf error: unknown option `%s'",
677 ppsz_argv[optind - 1] );
684 if( p_main->i_warning_level < 0 )
686 p_main->i_warning_level = 0;
692 /*****************************************************************************
693 * GetFilenames: parse command line options which are not flags
694 *****************************************************************************
695 * Parse command line for input files.
696 *****************************************************************************/
697 static int GetFilenames( int i_argc, char *ppsz_argv[] )
701 /* We assume that the remaining parameters are filenames */
702 for( i_opt = optind; i_opt < i_argc; i_opt++ )
704 intf_PlaylistAdd( p_main->p_playlist, PLAYLIST_END,
705 ppsz_argv[ i_opt ] );
711 /*****************************************************************************
712 * Usage: print program usage
713 *****************************************************************************
714 * Print a short inline help. Message interface is initialized at this stage.
715 *****************************************************************************/
716 static void Usage( int i_fashion )
719 intf_MsgImm( "Usage: %s [options] [parameters] [file]...",
722 if( i_fashion == USAGE )
724 intf_MsgImm( "Try `%s --help' for more information.",
730 intf_MsgImm( "\nOptions:"
731 "\n -I, --intf <module> \tinterface method"
732 "\n -v, --verbose \tverbose mode (cumulative)"
734 "\n --noaudio \tdisable audio"
735 "\n -A, --aout <module> \taudio output method"
736 "\n --stereo, --mono \tstereo/mono audio"
737 "\n --spdif \tAC3 pass-through mode"
739 "\n --novideo \tdisable video"
740 "\n -V, --vout <module> \tvideo output method"
741 "\n --display <display> \tdisplay string"
742 "\n --width <w>, --height <h> \tdisplay dimensions"
743 "\n -g, --grayscale \tgrayscale output"
744 "\n --fullscreen \tfullscreen output"
745 "\n --overlay \taccelerated display"
746 "\n --color \tcolor output"
747 "\n --motion <module> \tmotion compensation method"
748 "\n --idct <module> \tIDCT method"
749 "\n --yuv <module> \tYUV method"
750 "\n --synchro <type> \tforce synchro algorithm"
752 "\n -t, --dvdtitle <num> \tchoose DVD title"
753 "\n -T, --dvdchapter <num> \tchoose DVD chapter"
754 "\n -u, --dvdangle <num> \tchoose DVD angle"
755 "\n -a, --dvdaudio <type> \tchoose DVD audio type"
756 "\n -c, --dvdchannel <channel> \tchoose DVD audio channel"
757 "\n -s, --dvdsubtitle <channel> \tchoose DVD subtitle channel"
759 "\n --input \tinput method"
760 "\n --channels \tenable channels"
761 "\n --server <host> \tvideo server address"
762 "\n --port <port> \tvideo server port"
763 "\n --broadcast \tlisten to a broadcast"
765 "\n -h, --help \tprint help and exit"
766 "\n -H, --longhelp \tprint long help and exit"
767 "\n --version \toutput version information and exit" );
769 if( i_fashion == SHORT_HELP )
772 /* Interface parameters */
773 intf_MsgImm( "\nInterface parameters:"
774 "\n " INTF_METHOD_VAR "=<method name> \tinterface method"
775 "\n " INTF_INIT_SCRIPT_VAR "=<filename> \tinitialization script"
776 "\n " INTF_CHANNELS_VAR "=<filename> \tchannels list" );
778 /* Audio parameters */
779 intf_MsgImm( "\nAudio parameters:"
780 "\n " AOUT_METHOD_VAR "=<method name> \taudio method"
781 "\n " AOUT_DSP_VAR "=<filename> \tdsp device path"
782 "\n " AOUT_STEREO_VAR "={1|0} \tstereo or mono output"
783 "\n " AOUT_SPDIF_VAR "={1|0} \tAC3 pass-through mode"
784 "\n " AOUT_RATE_VAR "=<rate> \toutput rate" );
786 /* Video parameters */
787 intf_MsgImm( "\nVideo parameters:"
788 "\n " VOUT_METHOD_VAR "=<method name> \tdisplay method"
789 "\n " VOUT_DISPLAY_VAR "=<display name> \tdisplay used"
790 "\n " VOUT_WIDTH_VAR "=<width> \tdisplay width"
791 "\n " VOUT_HEIGHT_VAR "=<height> \tdislay height"
792 "\n " VOUT_FB_DEV_VAR "=<filename> \tframebuffer device path"
793 "\n " VOUT_GRAYSCALE_VAR "={1|0} \tgrayscale or color output"
794 "\n " VOUT_FULLSCREEN_VAR "={1|0} \tfullscreen"
795 "\n " VOUT_OVERLAY_VAR "={1|0} \toverlay"
796 "\n " MOTION_METHOD_VAR "=<method name> \tmotion compensation method"
797 "\n " IDCT_METHOD_VAR "=<method name> \tIDCT method"
798 "\n " YUV_METHOD_VAR "=<method name> \tYUV method"
799 "\n " VPAR_SYNCHRO_VAR "={I|I+|IP|IP+|IPB} \tsynchro algorithm" );
802 intf_MsgImm( "\nDVD parameters:"
803 "\n " INPUT_DVD_DEVICE_VAR "=<device> \tDVD device"
804 "\n " INPUT_TITLE_VAR "=<title> \ttitle number"
805 "\n " INPUT_CHAPTER_VAR "=<chapter> \tchapter number"
806 "\n " INPUT_ANGLE_VAR "=<angle> \tangle number"
807 "\n " INPUT_AUDIO_VAR "={ac3|lpcm|mpeg|off} \taudio type"
808 "\n " INPUT_CHANNEL_VAR "=[0-15] \taudio channel"
809 "\n " INPUT_SUBTITLE_VAR "=[0-31] \tsubtitle channel" );
811 /* Input parameters */
812 intf_MsgImm( "\nInput parameters:"
813 "\n " INPUT_SERVER_VAR "=<hostname> \tvideo server"
814 "\n " INPUT_PORT_VAR "=<port> \tvideo server port"
815 "\n " INPUT_IFACE_VAR "=<interface> \tnetwork interface"
816 "\n " INPUT_BROADCAST_VAR "=<addr> \tbroadcast mode"
817 "\n " INPUT_CHANNEL_SERVER_VAR "=<hostname> \tchannel server"
818 "\n " INPUT_CHANNEL_PORT_VAR "=<port> \tchannel server port" );
822 /*****************************************************************************
823 * Version: print complete program version
824 *****************************************************************************
825 * Print complete program version and build number.
826 *****************************************************************************/
827 static void Version( void )
829 intf_MsgImm( VERSION_MESSAGE
830 "This program comes with NO WARRANTY, to the extent permitted by law.\n"
831 "You may redistribute it under the terms of the GNU General Public License;\n"
832 "see the file named COPYING for details.\n"
833 "Written by the VideoLAN team at Ecole Centrale, Paris." );
836 /*****************************************************************************
837 * InitSignalHandler: system signal handler initialization
838 *****************************************************************************
839 * Set the signal handlers. SIGTERM is not intercepted, because we need at
840 * at least a method to kill the program when all other methods failed, and
841 * when we don't want to use SIGKILL.
842 *****************************************************************************/
843 static void InitSignalHandler( void )
845 /* Termination signals */
847 signal( SIGINT, FatalSignalHandler );
848 signal( SIGHUP, FatalSignalHandler );
849 signal( SIGQUIT, FatalSignalHandler );
852 signal( SIGALRM, SimpleSignalHandler );
853 signal( SIGPIPE, SimpleSignalHandler );
858 /*****************************************************************************
859 * SimpleSignalHandler: system signal handler
860 *****************************************************************************
861 * This function is called when a non fatal signal is received by the program.
862 *****************************************************************************/
863 static void SimpleSignalHandler( int i_signal )
865 /* Acknowledge the signal received */
866 intf_WarnMsg( 0, "intf: ignoring signal %d", i_signal );
870 /*****************************************************************************
871 * FatalSignalHandler: system signal handler
872 *****************************************************************************
873 * This function is called when a fatal signal is received by the program.
874 * It tries to end the program in a clean way.
875 *****************************************************************************/
876 static void FatalSignalHandler( int i_signal )
878 /* Once a signal has been trapped, the termination sequence will be
879 * armed and following signals will be ignored to avoid sending messages
880 * to an interface having been destroyed */
882 signal( SIGINT, SIG_IGN );
883 signal( SIGHUP, SIG_IGN );
884 signal( SIGQUIT, SIG_IGN );
887 /* Acknowledge the signal received */
888 intf_ErrMsgImm( "intf error: signal %d received, exiting", i_signal );
890 /* Try to terminate everything - this is done by requesting the end of the
891 * interface thread */
892 p_main->p_intf->b_die = 1;
895 /*****************************************************************************
896 * CPUCapabilities: list the processors MMX support and other capabilities
897 *****************************************************************************
898 * This function is called to list extensions the CPU may have.
899 *****************************************************************************/
900 static int CPUCapabilities( void )
902 int i_capabilities = CPU_CAPABILITY_NONE;
904 #if defined( SYS_BEOS )
905 i_capabilities |= CPU_CAPABILITY_486
907 | CPU_CAPABILITY_MMX;
909 #elif defined( SYS_DARWIN1_3 )
911 struct host_basic_info hi;
913 host_name_port_t host;
916 char *psz_name, *psz_subname;
918 /* Should 'never' fail? */
919 host = mach_host_self();
921 i_size = sizeof( hi ) / sizeof( int );
922 ret = host_info( host, HOST_BASIC_INFO, ( host_info_t )&hi, &i_size );
924 if( ret != KERN_SUCCESS )
926 intf_ErrMsg( "error: couldn't get CPU information" );
927 return( i_capabilities );
930 slot_name( hi.cpu_type, hi.cpu_subtype, &psz_name, &psz_subname );
931 /* FIXME: need better way to detect newer proccessors.
932 * could do strncmp(a,b,5), but that's real ugly */
933 if( strcmp(psz_name, "ppc7400") || strcmp(psz_name, "ppc7450") )
935 i_capabilities |= CPU_CAPABILITY_ALTIVEC;
938 #elif defined( __i386__ )
939 unsigned int i_eax, i_ebx, i_ecx, i_edx;
942 # define cpuid( a ) \
943 asm volatile ( "cpuid" \
951 /* test for a 486 CPU */
952 asm volatile ( "pushfl\n\t"
954 "movl %%eax, %%ebx\n\t"
955 "xorl $0x200000, %%eax\n\t"
967 return( i_capabilities );
970 i_capabilities |= CPU_CAPABILITY_486;
972 /* the CPU supports the CPUID instruction - get its level */
977 return( i_capabilities );
980 /* FIXME: this isn't correct, since some 486s have cpuid */
981 i_capabilities |= CPU_CAPABILITY_586;
983 /* borrowed from mpeg2dec */
984 b_amd = ( i_ebx == 0x68747541 ) && ( i_ecx == 0x444d4163 )
985 && ( i_edx == 0x69746e65 );
987 /* test for the MMX flag */
990 if( ! (i_edx & 0x00800000) )
992 return( i_capabilities );
995 i_capabilities |= CPU_CAPABILITY_MMX;
997 if( i_edx & 0x02000000 )
999 i_capabilities |= CPU_CAPABILITY_MMXEXT;
1002 /* test for additional capabilities */
1003 cpuid( 0x80000000 );
1005 if( i_eax < 0x80000001 )
1007 return( i_capabilities );
1010 /* list these additional capabilities */
1011 cpuid( 0x80000001 );
1013 if( i_edx & 0x80000000 )
1015 i_capabilities |= CPU_CAPABILITY_3DNOW;
1018 if( b_amd && ( i_edx & 0x00400000 ) )
1020 i_capabilities |= CPU_CAPABILITY_MMXEXT;
1024 /* default behaviour */
1027 return( i_capabilities );