X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Finterface%2Fmain.c;h=bfdc998c994e18282d15347326bec9d475e70666;hb=a70f8bb371466209770c4c3bcdb7137b94acef66;hp=0a16e12ef81a7cf4bdd19c1d015fb0d95f73a12d;hpb=0d5aa512b43437462fe3e64009423cc33d409694;p=vlc diff --git a/src/interface/main.c b/src/interface/main.c index 0a16e12ef8..bfdc998c99 100644 --- a/src/interface/main.c +++ b/src/interface/main.c @@ -4,8 +4,10 @@ * and spawn threads. ***************************************************************************** * Copyright (C) 1998, 1999, 2000 VideoLAN + * $Id: main.c,v 1.91 2001/05/01 04:18:18 sam Exp $ * - * Authors: + * Authors: Vincent Seguin + * Samuel Hocevar * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -29,12 +31,23 @@ #include /* SIGHUP, SIGINT, SIGKILL */ #include /* sprintf() */ -#include /* getopt() under QNX */ -#ifdef HAVE_GETOPT_H -#include /* getopt() */ +#ifdef HAVE_GETOPT_LONG +# ifdef HAVE_GETOPT_H +# include /* getopt() */ +# endif +#else +# include "GNUgetopt/getopt.h" #endif +#ifdef SYS_DARWIN1_3 +# include /* Altivec detection */ +# include /* some day the header files||compiler * + will define it for us */ +# include +#endif + +#include #include /* ENOMEM */ #include /* getenv(), strtol(), */ #include /* strerror() */ @@ -60,9 +73,15 @@ #include "video_output.h" #ifdef SYS_BEOS -#include "beos_specific.h" +# include "beos_specific.h" +#endif + +#ifdef SYS_DARWIN1_3 +# include "darwin_specific.h" #endif +#include "netutils.h" /* network_ChannelJoin */ + #include "main.h" /***************************************************************************** @@ -75,6 +94,7 @@ #define OPT_NOAUDIO 150 #define OPT_STEREO 151 #define OPT_MONO 152 +#define OPT_SPDIF 153 #define OPT_NOVIDEO 160 #define OPT_DISPLAY 161 @@ -84,7 +104,7 @@ #define OPT_FULLSCREEN 165 #define OPT_OVERLAY 166 -#define OPT_VLANS 170 +#define OPT_CHANNELS 170 #define OPT_SERVER 171 #define OPT_PORT 172 #define OPT_BROADCAST 173 @@ -96,6 +116,7 @@ #define OPT_SYNCHRO 190 #define OPT_WARNING 191 +#define OPT_VERSION 192 /* Usage fashion */ #define USAGE 0 @@ -103,7 +124,6 @@ #define LONG_HELP 2 /* Long options */ -#ifdef HAVE_GETOPT_H static const struct option longopts[] = { /* name, has_arg, flag, val */ @@ -111,7 +131,7 @@ static const struct option longopts[] = /* General/common options */ { "help", 0, 0, 'h' }, { "longhelp", 0, 0, 'H' }, - { "version", 0, 0, 'v' }, + { "version", 0, 0, OPT_VERSION }, /* Interface options */ { "intf", 1, 0, 'I' }, @@ -122,6 +142,7 @@ static const struct option longopts[] = { "aout", 1, 0, 'A' }, { "stereo", 0, 0, OPT_STEREO }, { "mono", 0, 0, OPT_MONO }, + { "spdif", 0, 0, OPT_SPDIF }, /* Video options */ { "novideo", 0, 0, OPT_NOVIDEO }, @@ -140,16 +161,17 @@ static const struct option longopts[] = /* DVD options */ { "dvdtitle", 1, 0, 't' }, { "dvdchapter", 1, 0, 'T' }, + { "dvdangle", 1, 0, 'u' }, { "dvdaudio", 1, 0, 'a' }, { "dvdchannel", 1, 0, 'c' }, { "dvdsubtitle", 1, 0, 's' }, /* Input options */ { "input", 1, 0, OPT_INPUT }, - { "vlans", 0, 0, OPT_VLANS }, + { "channels", 0, 0, OPT_CHANNELS }, { "server", 1, 0, OPT_SERVER }, { "port", 1, 0, OPT_PORT }, - { "broadcast", 0, 0, OPT_BROADCAST }, + { "broadcast", 1, 0, OPT_BROADCAST }, /* Synchro options */ { "synchro", 1, 0, OPT_SYNCHRO }, @@ -157,20 +179,19 @@ static const struct option longopts[] = }; /* Short options */ -static const char *psz_shortopts = "hHvgt:T:a:s:c:I:A:V:"; -#endif - +static const char *psz_shortopts = "hHvgt:T:u:a:s:c:I:A:V:"; /***************************************************************************** - * Global variable program_data - this is the one and only, see main.h + * Global variable program_data - these are the only ones, see main.h and + * modules.h *****************************************************************************/ main_t *p_main; +bank_t *p_bank; /***************************************************************************** * Local prototypes *****************************************************************************/ -static void SetDefaultConfiguration ( void ); -static int GetConfiguration ( int i_argc, char *ppsz_argv[], +static int GetConfiguration ( int *pi_argc, char *ppsz_argv[], char *ppsz_env[] ); static int GetFilenames ( int i_argc, char *ppsz_argv[] ); static void Usage ( int i_fashion ); @@ -180,6 +201,8 @@ static void InitSignalHandler ( void ); static void SimpleSignalHandler ( int i_signal ); static void FatalSignalHandler ( int i_signal ); +static int CPUCapabilities ( void ); + /***************************************************************************** * main: parse command line, start interface and spawn threads ***************************************************************************** @@ -193,18 +216,26 @@ static void FatalSignalHandler ( int i_signal ); int main( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) { main_t main_data; /* root of all data - see main.h */ + bank_t module_bank; - p_main = &main_data; /* set up the global variable */ + p_main = &main_data; /* set up the global variables */ + p_bank = &module_bank; + + /* + * Initialize the main structure + */ + p_main->i_cpu_capabilities = CPUCapabilities(); + + p_main->p_aout = NULL; + p_main->p_vout = NULL; /* * System specific initialization code */ -#ifdef SYS_BEOS - beos_Create(); +#if defined( SYS_BEOS ) || defined( SYS_DARWIN1_3 ) + system_Create( &i_argc, ppsz_argv, ppsz_env ); #endif - p_main->i_cpu_capabilities = CPUCapabilities(); - /* * Test if our code is likely to run on this CPU */ @@ -242,19 +273,16 @@ int main( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) /* * Read configuration */ - if( GetConfiguration( i_argc, ppsz_argv, ppsz_env ) ) /* parse cmd line */ + if( GetConfiguration( &i_argc, ppsz_argv, ppsz_env ) ) /* parse cmd line */ { intf_MsgDestroy(); return( errno ); } - p_main->i_warning_level = main_GetIntVariable( INTF_WARNING_VAR, - INTF_WARNING_DEFAULT ); - /* * Initialize playlist and get commandline files */ - p_main->p_playlist = intf_PlaylistCreate( ); + p_main->p_playlist = intf_PlaylistCreate(); if( !p_main->p_playlist ) { intf_ErrMsg( "playlist error: playlist initialization failed" ); @@ -271,29 +299,18 @@ int main( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) /* * Initialize module bank */ - p_main->p_bank = module_CreateBank( ); - if( !p_main->p_bank ) - { - intf_ErrMsg( "module error: module bank initialization failed" ); - intf_PlaylistDestroy( p_main->p_playlist ); - intf_MsgDestroy(); - return( errno ); - } - module_InitBank( p_main->p_bank ); + module_InitBank(); /* * Initialize shared resources and libraries */ - /* FIXME: no VLANs */ -#if 0 - if( p_main->b_vlans && input_VlanCreate() ) + if( p_main->b_channels && network_ChannelCreate() ) { - /* On error during vlans initialization, switch off vlans */ - intf_Msg( "Virtual LANs initialization failed : " - "vlans management is deactivated" ); - p_main->b_vlans = 0; + /* On error during Channels initialization, switch off channels */ + intf_Msg( "Channels initialization failed : " + "Channel management is deactivated" ); + p_main->b_channels = 0; } -#endif /* * Run interface @@ -302,7 +319,7 @@ int main( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) if( !p_main->p_intf ) { intf_ErrMsg( "intf error: interface initialization failed" ); - module_DestroyBank( p_main->p_bank ); + module_EndBank(); intf_PlaylistDestroy( p_main->p_playlist ); intf_MsgDestroy(); return( errno ); @@ -313,88 +330,55 @@ int main( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) */ InitSignalHandler(); - /* - * Open audio device and start aout thread - */ - if( p_main->b_audio ) - { - p_main->p_aout = aout_CreateThread( NULL ); - if( p_main->p_aout == NULL ) - { - /* On error during audio initialization, switch off audio */ - intf_ErrMsg( "aout error: audio initialization failed," - " audio is deactivated" ); - p_main->b_audio = 0; - } - } - - /* - * Open video device and start vout thread - */ - if( p_main->b_video ) - { - p_main->p_vout = vout_CreateThread( NULL ); - if( p_main->p_vout == NULL ) - { - /* On error during video initialization, switch off video */ - intf_ErrMsg( "vout error: video initialization failed," - " video is deactivated" ); - p_main->b_video = 0; - } - } - - /* Flush messages before entering the main loop */ - intf_FlushMsg(); - /* * This is the main loop */ p_main->p_intf->pf_run( p_main->p_intf ); + /* + * Finished, destroy the interface + */ intf_Destroy( p_main->p_intf ); /* - * Close video device + * Close all video devices */ - if( p_main->b_video ) + if( p_main->p_vout != NULL ) { vout_DestroyThread( p_main->p_vout, NULL ); } /* - * Close audio device + * Close all audio devices */ - if( p_main->b_audio ) + if( p_main->p_aout != NULL ) { aout_DestroyThread( p_main->p_aout, NULL ); } /* - * Free shared resources and libraries + * Go back into channel 0 which is the network */ - /* FIXME */ -#if 0 - if( p_main->b_vlans ) + if( p_main->b_channels ) { - input_VlanDestroy(); + network_ChannelJoin( COMMON_CHANNEL ); } -#endif /* * Free module bank */ - module_DestroyBank( p_main->p_bank ); + module_EndBank(); /* * Free playlist */ intf_PlaylistDestroy( p_main->p_playlist ); -#ifdef SYS_BEOS /* * System specific cleaning code */ - beos_Destroy(); +#if defined( SYS_BEOS ) || defined( SYS_DARWIN1_3 ) + system_Destroy(); #endif /* @@ -490,24 +474,6 @@ void main_PutIntVariable( char *psz_name, int i_value ) /* following functions are local */ -/***************************************************************************** - * SetDefaultConfiguration: set default options - ***************************************************************************** - * This function is called by GetConfiguration before command line is parsed. - * It sets all the default values required later by the program. At this stage, - * most structure are not yet allocated, so initialization must be done using - * environment. - *****************************************************************************/ -static void SetDefaultConfiguration( void ) -{ - /* - * All features are activated by default except vlans - */ - p_main->b_audio = 1; - p_main->b_video = 1; - p_main->b_vlans = 0; -} - /***************************************************************************** * GetConfiguration: parse command line ***************************************************************************** @@ -517,37 +483,62 @@ static void SetDefaultConfiguration( void ) * stage, but most structures are not allocated, so only environment should * be used. *****************************************************************************/ -static int GetConfiguration( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) +static int GetConfiguration( int *pi_argc, char *ppsz_argv[], char *ppsz_env[] ) { - int c; - char * p_pointer; + int i_cmd; + char *p_tmp; /* Set default configuration and copy arguments */ - p_main->i_argc = i_argc; + p_main->i_argc = *pi_argc; p_main->ppsz_argv = ppsz_argv; p_main->ppsz_env = ppsz_env; - SetDefaultConfiguration(); + + p_main->b_audio = 1; + p_main->b_video = 1; + p_main->b_channels = 0; + + p_main->i_warning_level = 4; /* Get the executable name (similar to the basename command) */ - p_main->psz_arg0 = p_pointer = ppsz_argv[ 0 ]; - while( *p_pointer ) + p_main->psz_arg0 = p_tmp = ppsz_argv[ 0 ]; + while( *p_tmp ) { - if( *p_pointer == '/' ) + if( *p_tmp == '/' ) { - p_main->psz_arg0 = ++p_pointer; + p_main->psz_arg0 = ++p_tmp; } else { - ++p_pointer; + ++p_tmp; } } +#ifdef SYS_DARWIN1_3 + /* When vlc.app is run by double clicking in Mac OS X, the 2nd arg + * is the PSN - process serial number (a unique PID-ish thingie) + * still ok for real Darwin & when run from command line */ + if ( (*pi_argc > 1) && (strncmp( ppsz_argv[ 1 ] , "-psn" , 4 ) == 0) ) + /* for example -psn_0_9306113 */ + { + /* GDMF!... I can't do this or else the MacOSX window server will + * not pick up the PSN and not register the app and we crash... + * hence the following kludge otherwise we'll get confused w/ argv[1] + * being an input file name */ +#if 0 + ppsz_argv[ 1 ] = NULL; +#endif + *pi_argc = *pi_argc - 1; + pi_argc--; + return( 0 ); + } +#endif + /* Parse command line options */ -#ifdef HAVE_GETOPT_H opterr = 0; - while( ( c = getopt_long( i_argc, ppsz_argv, psz_shortopts, longopts, 0 ) ) != EOF ) + while( ( i_cmd = getopt_long( *pi_argc, ppsz_argv, + psz_shortopts, longopts, 0 ) ) != EOF ) { - switch( c ) + switch( i_cmd ) { /* General/common options */ case 'h': /* -h, --help */ @@ -558,17 +549,21 @@ static int GetConfiguration( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) Usage( LONG_HELP ); return( -1 ); break; - case 'v': /* -v, --version */ + case OPT_VERSION: /* --version */ Version(); return( -1 ); break; + case 'v': /* -v, --verbose */ + p_main->i_warning_level--; + break; /* Interface warning messages level */ - case 'I': /* -I, --intf */ + case 'I': /* -I, --intf */ main_PutPszVariable( INTF_METHOD_VAR, optarg ); break; case OPT_WARNING: /* --warning */ - main_PutIntVariable( INTF_WARNING_VAR, atoi(optarg) ); + intf_ErrMsg( "intf error: `--warning' is deprecated, use `-v'" ); + p_main->i_warning_level = atoi(optarg); break; /* Audio options */ @@ -584,6 +579,9 @@ static int GetConfiguration( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) case OPT_MONO: /* --mono */ main_PutIntVariable( AOUT_STEREO_VAR, 0 ); break; + case OPT_SPDIF: /* --spdif */ + main_PutIntVariable( AOUT_SPDIF_VAR, 1 ); + break; /* Video options */ case OPT_NOVIDEO: /* --novideo */ @@ -630,6 +628,9 @@ static int GetConfiguration( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) case 'T': main_PutIntVariable( INPUT_CHAPTER_VAR, atoi(optarg) ); break; + case 'u': + main_PutIntVariable( INPUT_ANGLE_VAR, atoi(optarg) ); + break; case 'a': if ( ! strcmp(optarg, "ac3") ) main_PutIntVariable( INPUT_AUDIO_VAR, REQUESTED_AC3 ); @@ -651,8 +652,8 @@ static int GetConfiguration( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) case OPT_INPUT: /* --input */ main_PutPszVariable( INPUT_METHOD_VAR, optarg ); break; - case OPT_VLANS: /* --vlans */ - p_main->b_vlans = 1; + case OPT_CHANNELS: /* --channels */ + p_main->b_channels = 1; break; case OPT_SERVER: /* --server */ main_PutPszVariable( INPUT_SERVER_VAR, optarg ); @@ -661,7 +662,7 @@ static int GetConfiguration( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) main_PutPszVariable( INPUT_PORT_VAR, optarg ); break; case OPT_BROADCAST: /* --broadcast */ - main_PutIntVariable( INPUT_BROADCAST_VAR, 1 ); + main_PutPszVariable( INPUT_BROADCAST_VAR, optarg ); break; /* Synchro options */ @@ -672,13 +673,19 @@ static int GetConfiguration( int i_argc, char *ppsz_argv[], char *ppsz_env[] ) /* Internal error: unknown option */ case '?': default: - intf_ErrMsg( "intf error: unknown option `%s'", ppsz_argv[optind - 1] ); + intf_ErrMsg( "intf error: unknown option `%s'", + ppsz_argv[optind - 1] ); Usage( USAGE ); return( EINVAL ); break; } } -#endif + + if( p_main->i_warning_level < 0 ) + { + p_main->i_warning_level = 0; + } + return( 0 ); } @@ -722,11 +729,12 @@ static void Usage( int i_fashion ) /* Options */ intf_MsgImm( "\nOptions:" "\n -I, --intf \tinterface method" - "\n --warning \tdisplay warning messages" + "\n -v, --verbose \tverbose mode (cumulative)" "\n" "\n --noaudio \tdisable audio" "\n -A, --aout \taudio output method" "\n --stereo, --mono \tstereo/mono audio" + "\n --spdif \tAC3 pass-through mode" "\n" "\n --novideo \tdisable video" "\n -V, --vout \tvideo output method" @@ -743,19 +751,20 @@ static void Usage( int i_fashion ) "\n" "\n -t, --dvdtitle \tchoose DVD title" "\n -T, --dvdchapter \tchoose DVD chapter" + "\n -u, --dvdangle \tchoose DVD angle" "\n -a, --dvdaudio \tchoose DVD audio type" "\n -c, --dvdchannel \tchoose DVD audio channel" "\n -s, --dvdsubtitle \tchoose DVD subtitle channel" "\n" "\n --input \tinput method" - "\n --vlans \tenable vlans" + "\n --channels \tenable channels" "\n --server \tvideo server address" "\n --port \tvideo server port" "\n --broadcast \tlisten to a broadcast" "\n" "\n -h, --help \tprint help and exit" "\n -H, --longhelp \tprint long help and exit" - "\n -v, --version \toutput version information and exit" ); + "\n --version \toutput version information and exit" ); if( i_fashion == SHORT_HELP ) return; @@ -764,14 +773,14 @@ static void Usage( int i_fashion ) intf_MsgImm( "\nInterface parameters:" "\n " INTF_METHOD_VAR "= \tinterface method" "\n " INTF_INIT_SCRIPT_VAR "= \tinitialization script" - "\n " INTF_CHANNELS_VAR "= \tchannels list" - "\n " INTF_WARNING_VAR "= \twarning level" ); + "\n " INTF_CHANNELS_VAR "= \tchannels list" ); /* Audio parameters */ intf_MsgImm( "\nAudio parameters:" "\n " AOUT_METHOD_VAR "= \taudio method" "\n " AOUT_DSP_VAR "= \tdsp device path" "\n " AOUT_STEREO_VAR "={1|0} \tstereo or mono output" + "\n " AOUT_SPDIF_VAR "={1|0} \tAC3 pass-through mode" "\n " AOUT_RATE_VAR "= \toutput rate" ); /* Video parameters */ @@ -794,6 +803,7 @@ static void Usage( int i_fashion ) "\n " INPUT_DVD_DEVICE_VAR "= \tDVD device" "\n " INPUT_TITLE_VAR "= \ttitle number" "\n " INPUT_CHAPTER_VAR "=<chapter> \tchapter number" + "\n " INPUT_ANGLE_VAR "=<angle> \tangle number" "\n " INPUT_AUDIO_VAR "={ac3|lpcm|mpeg|off} \taudio type" "\n " INPUT_CHANNEL_VAR "=[0-15] \taudio channel" "\n " INPUT_SUBTITLE_VAR "=[0-31] \tsubtitle channel" ); @@ -803,9 +813,9 @@ static void Usage( int i_fashion ) "\n " INPUT_SERVER_VAR "=<hostname> \tvideo server" "\n " INPUT_PORT_VAR "=<port> \tvideo server port" "\n " INPUT_IFACE_VAR "=<interface> \tnetwork interface" - "\n " INPUT_BROADCAST_VAR "={1|0} \tbroadcast mode" - "\n " INPUT_VLAN_SERVER_VAR "=<hostname> \tvlan server" - "\n " INPUT_VLAN_PORT_VAR "=<port> \tvlan server port" ); + "\n " INPUT_BROADCAST_VAR "=<addr> \tbroadcast mode" + "\n " INPUT_CHANNEL_SERVER_VAR "=<hostname> \tchannel server" + "\n " INPUT_CHANNEL_PORT_VAR "=<port> \tchannel server port" ); } @@ -833,13 +843,15 @@ static void Version( void ) static void InitSignalHandler( void ) { /* Termination signals */ - signal( SIGHUP, FatalSignalHandler ); +#ifndef WIN32 signal( SIGINT, FatalSignalHandler ); + signal( SIGHUP, FatalSignalHandler ); signal( SIGQUIT, FatalSignalHandler ); /* Other signals */ signal( SIGALRM, SimpleSignalHandler ); signal( SIGPIPE, SimpleSignalHandler ); +#endif } @@ -866,9 +878,11 @@ static void FatalSignalHandler( int i_signal ) /* Once a signal has been trapped, the termination sequence will be * armed and following signals will be ignored to avoid sending messages * to an interface having been destroyed */ - signal( SIGHUP, SIG_IGN ); +#ifndef WIN32 signal( SIGINT, SIG_IGN ); + signal( SIGHUP, SIG_IGN ); signal( SIGQUIT, SIG_IGN ); +#endif /* Acknowledge the signal received */ intf_ErrMsgImm( "intf error: signal %d received, exiting", i_signal ); @@ -878,3 +892,138 @@ static void FatalSignalHandler( int i_signal ) p_main->p_intf->b_die = 1; } +/***************************************************************************** + * CPUCapabilities: list the processors MMX support and other capabilities + ***************************************************************************** + * This function is called to list extensions the CPU may have. + *****************************************************************************/ +static int CPUCapabilities( void ) +{ + int i_capabilities = CPU_CAPABILITY_NONE; + +#if defined( SYS_BEOS ) + i_capabilities |= CPU_CAPABILITY_486 + | CPU_CAPABILITY_586 + | CPU_CAPABILITY_MMX; + +#elif defined( SYS_DARWIN1_3 ) + + struct host_basic_info hi; + kern_return_t ret; + host_name_port_t host; + + int i_size; + char *psz_name, *psz_subname; + + /* Should 'never' fail? */ + host = mach_host_self(); + + i_size = sizeof( hi ) / sizeof( int ); + ret = host_info( host, HOST_BASIC_INFO, ( host_info_t )&hi, &i_size ); + + if( ret != KERN_SUCCESS ) + { + intf_ErrMsg( "error: couldn't get CPU information" ); + return( i_capabilities ); + } + + slot_name( hi.cpu_type, hi.cpu_subtype, &psz_name, &psz_subname ); + /* FIXME: need better way to detect newer proccessors. + * could do strncmp(a,b,5), but that's real ugly */ + if( strcmp(psz_name, "ppc7400") || strcmp(psz_name, "ppc7450") ) + { + i_capabilities |= CPU_CAPABILITY_ALTIVEC; + } + +#elif defined( __i386__ ) + unsigned int i_eax, i_ebx, i_ecx, i_edx; + boolean_t b_amd; + +# define cpuid( a ) \ + asm volatile ( "cpuid" \ + : "=a" ( i_eax ), \ + "=b" ( i_ebx ), \ + "=c" ( i_ecx ), \ + "=d" ( i_edx ) \ + : "a" ( a ) \ + : "cc" ); \ + + /* test for a 486 CPU */ + asm volatile ( "pushfl\n\t" + "popl %%eax\n\t" + "movl %%eax, %%ebx\n\t" + "xorl $0x200000, %%eax\n\t" + "pushl %%eax\n\t" + "popfl\n\t" + "pushfl\n\t" + "popl %%eax" + : "=a" ( i_eax ), + "=b" ( i_ebx ) + : + : "cc" ); + + if( i_eax == i_ebx ) + { + return( i_capabilities ); + } + + i_capabilities |= CPU_CAPABILITY_486; + + /* the CPU supports the CPUID instruction - get its level */ + cpuid( 0x00000000 ); + + if( !i_eax ) + { + return( i_capabilities ); + } + + /* FIXME: this isn't correct, since some 486s have cpuid */ + i_capabilities |= CPU_CAPABILITY_586; + + /* borrowed from mpeg2dec */ + b_amd = ( i_ebx == 0x68747541 ) && ( i_ecx == 0x444d4163 ) + && ( i_edx == 0x69746e65 ); + + /* test for the MMX flag */ + cpuid( 0x00000001 ); + + if( ! (i_edx & 0x00800000) ) + { + return( i_capabilities ); + } + + i_capabilities |= CPU_CAPABILITY_MMX; + + if( i_edx & 0x02000000 ) + { + i_capabilities |= CPU_CAPABILITY_MMXEXT; + } + + /* test for additional capabilities */ + cpuid( 0x80000000 ); + + if( i_eax < 0x80000001 ) + { + return( i_capabilities ); + } + + /* list these additional capabilities */ + cpuid( 0x80000001 ); + + if( i_edx & 0x80000000 ) + { + i_capabilities |= CPU_CAPABILITY_3DNOW; + } + + if( b_amd && ( i_edx & 0x00400000 ) ) + { + i_capabilities |= CPU_CAPABILITY_MMXEXT; + } + +#else + /* default behaviour */ + +#endif + return( i_capabilities ); +} +