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vlc/src/interface/main.c

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/*****************************************************************************
* main.c: main vlc source
* Includes the main() function for vlc. Parses command line, start interface
* and spawn threads.
*****************************************************************************
* Copyright (C) 1998, 1999, 2000 VideoLAN
*
* Authors:
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include "defs.h"
#include <signal.h> /* SIGHUP, SIGINT, SIGKILL */
#include <stdio.h> /* sprintf() */
#ifdef HAVE_GETOPT_H
#include <getopt.h> /* getopt() */
#endif
#include <errno.h> /* ENOMEM */
#include <stdlib.h> /* getenv(), strtol(), */
#include <string.h> /* strerror() */
#include "config.h"
#include "debug.h"
#include "common.h"
#include "threads.h"
#include "mtime.h"
#include "tests.h" /* TestMMX() */
#include "plugins.h"
#include "playlist.h"
#include "stream_control.h"
#include "input_ext-intf.h"
#include "intf_msg.h"
#include "interface.h"
#include "audio_output.h"
#ifdef SYS_BEOS
#include "beos_specific.h"
#endif
#include "main.h"
/*****************************************************************************
* Command line options constants. If something is changed here, be sure that
* GetConfiguration and Usage are also changed.
*****************************************************************************/
/* Long options return values - note that values corresponding to short options
* chars, and in general any regular char, should be avoided */
#define OPT_NOAUDIO 150
#define OPT_AOUT 151
#define OPT_STEREO 152
#define OPT_MONO 153
#define OPT_NOVIDEO 160
#define OPT_VOUT 161
#define OPT_DISPLAY 162
#define OPT_WIDTH 163
#define OPT_HEIGHT 164
#define OPT_COLOR 165
#define OPT_YUV 166
#define OPT_VLANS 170
#define OPT_SERVER 171
#define OPT_PORT 172
#define OPT_BROADCAST 173
#define OPT_SYNCHRO 180
#define OPT_WARNING 190
/* Usage fashion */
#define USAGE 0
#define SHORT_HELP 1
#define LONG_HELP 2
/* Long options */
#ifdef HAVE_GETOPT_H
static const struct option longopts[] =
{
/* name, has_arg, flag, val */
/* General/common options */
{ "help", 0, 0, 'h' },
{ "longhelp", 0, 0, 'H' },
{ "version", 0, 0, 'v' },
/* Audio options */
{ "noaudio", 0, 0, OPT_NOAUDIO },
{ "aout", 1, 0, OPT_AOUT },
{ "stereo", 0, 0, OPT_STEREO },
{ "mono", 0, 0, OPT_MONO },
/* Video options */
{ "novideo", 0, 0, OPT_NOVIDEO },
{ "vout", 1, 0, OPT_VOUT },
{ "display", 1, 0, OPT_DISPLAY },
{ "width", 1, 0, OPT_WIDTH },
{ "height", 1, 0, OPT_HEIGHT },
{ "grayscale", 0, 0, 'g' },
{ "color", 0, 0, OPT_COLOR },
{ "yuv", 1, 0, OPT_YUV },
/* DVD options */
{ "dvdaudio", 1, 0, 'a' },
{ "dvdchannel", 1, 0, 'c' },
{ "dvdsubtitle", 1, 0, 's' },
/* Input options */
{ "vlans", 0, 0, OPT_VLANS },
{ "server", 1, 0, OPT_SERVER },
{ "port", 1, 0, OPT_PORT },
{ "broadcast", 0, 0, OPT_BROADCAST },
/* Synchro options */
{ "synchro", 1, 0, OPT_SYNCHRO },
/* Interface messages */
{ "warning", 1, 0, OPT_WARNING },
{ 0, 0, 0, 0 }
};
/* Short options */
static const char *psz_shortopts = "hHvga:s:c:";
#endif
/*****************************************************************************
* Global variable program_data - this is the one and only, see main.h
*****************************************************************************/
main_t *p_main;
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static void SetDefaultConfiguration ( void );
static int GetConfiguration ( int i_argc, char *ppsz_argv[],
char *ppsz_env[] );
static void Usage ( int i_fashion );
static void Version ( void );
static void InitSignalHandler ( void );
static void SimpleSignalHandler ( int i_signal );
static void FatalSignalHandler ( int i_signal );
#ifdef HAVE_MMX
int TestMMX ( void );
#endif
/*****************************************************************************
* main: parse command line, start interface and spawn threads
*****************************************************************************
* Steps during program execution are:
* -configuration parsing and messages interface initialization
* -opening of audio output device and some global modules
* -execution of interface, which exit on error or on user request
* -closing of audio output device and some global modules
* On error, the spawned threads are canceled, and the open devices closed.
*****************************************************************************/
int main( int i_argc, char *ppsz_argv[], char *ppsz_env[] )
{
main_t main_data; /* root of all data - see main.h */
p_main = &main_data; /* set up the global variable */
/*
* System specific initialization code
*/
#ifdef SYS_BEOS
beos_Create();
#endif
/*
* Test if our code is likely to run on this CPU
*/
#ifdef HAVE_MMX
if( !TestMMX() )
{
fprintf( stderr, "Sorry, this program needs an MMX processor. "
"Please run the non-MMX version.\n" );
return( 1 );
}
#endif
/*
* Initialize messages interface
*/
p_main->p_msg = intf_MsgCreate();
if( !p_main->p_msg ) /* start messages interface */
{
fprintf( stderr, "error: can't initialize messages interface (%s)\n",
strerror(errno) );
return( errno );
}
/*
* Set signal handling policy up for all the threads that will be created
*/
InitSignalHandler(); /* prepare signals for interception */
/*
* Read configuration
*/
if( GetConfiguration( i_argc, ppsz_argv, ppsz_env ) ) /* parse cmd line */
{
intf_MsgDestroy();
return( errno );
}
/*
* Initialize playlist and get commandline files
*/
p_main->p_playlist = playlist_Create( );
if( !p_main->p_playlist )
{
intf_Msg( "Playlist initialization failed\n" );
intf_MsgDestroy();
return( errno );
}
playlist_Init( p_main->p_playlist, optind );
/*
* Initialize plugin bank
*/
p_main->p_bank = bank_Create( );
if( !p_main->p_bank )
{
intf_Msg( "Plugin bank initialization failed\n" );
playlist_Destroy( p_main->p_playlist );
intf_MsgDestroy();
return( errno );
}
bank_Init( p_main->p_bank );
/*
* Initialize shared resources and libraries
*/
/* FIXME: no VLANs */
#if 0
if( p_main->b_vlans && input_VlanCreate() )
{
/* On error during vlans initialization, switch off vlans */
intf_Msg( "Virtual LANs initialization failed : "
"vlans management is deactivated\n" );
p_main->b_vlans = 0;
}
#endif
/*
* 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_Msg( "Audio initialization failed : audio is deactivated\n" );
p_main->b_audio = 0;
}
}
/*
* Run interface
*/
p_main->p_intf = intf_Create();
if( p_main->p_intf != NULL )
{
/*
* This is the main loop
*/
intf_Run( p_main->p_intf );
intf_Destroy( p_main->p_intf );
}
/*
* Close audio device
*/
if( p_main->b_audio )
{
aout_DestroyThread( p_main->p_aout, NULL );
}
/*
* Free shared resources and libraries
*/
/* FIXME */
#if 0
if( p_main->b_vlans )
{
input_VlanDestroy();
}
#endif
/*
* Free plugin bank
*/
bank_Destroy( p_main->p_bank );
/*
* Free playlist
*/
playlist_Destroy( p_main->p_playlist );
#ifdef SYS_BEOS
/*
* System specific cleaning code
*/
beos_Destroy();
#endif
/*
* Terminate messages interface and program
*/
intf_Msg( "Program terminated.\n" );
intf_MsgDestroy();
return( 0 );
}
/*****************************************************************************
* main_GetIntVariable: get the int value of an environment variable
*****************************************************************************
* This function is used to read some default parameters in modules.
*****************************************************************************/
int main_GetIntVariable( char *psz_name, int i_default )
{
char * psz_env; /* environment value */
char * psz_end; /* end of parsing index */
long int i_value; /* value */
psz_env = getenv( psz_name );
if( psz_env )
{
i_value = strtol( psz_env, &psz_end, 0 );
if( (*psz_env != '\0') && (*psz_end == '\0') )
{
return( i_value );
}
}
return( i_default );
}
/*****************************************************************************
* main_GetPszVariable: get the string value of an environment variable
*****************************************************************************
* This function is used to read some default parameters in modules.
*****************************************************************************/
char * main_GetPszVariable( char *psz_name, char *psz_default )
{
char *psz_env;
psz_env = getenv( psz_name );
if( psz_env )
{
return( psz_env );
}
return( psz_default );
}
/*****************************************************************************
* main_PutPszVariable: set the string value of an environment variable
*****************************************************************************
* This function is used to set some default parameters in modules. The use of
* this function will cause some memory leak: since some systems use the pointer
* passed to putenv to store the environment string, it can't be freed.
*****************************************************************************/
void main_PutPszVariable( char *psz_name, char *psz_value )
{
char *psz_env;
psz_env = malloc( strlen(psz_name) + strlen(psz_value) + 2 );
if( psz_env == NULL )
{
intf_ErrMsg( "error: %s\n", strerror(ENOMEM) );
}
else
{
sprintf( psz_env, "%s=%s", psz_name, psz_value );
if( putenv( psz_env ) )
{
intf_ErrMsg( "error: %s\n", strerror(errno) );
}
}
}
/*****************************************************************************
* main_PutIntVariable: set the integer value of an environment variable
*****************************************************************************
* This function is used to set some default parameters in modules. The use of
* this function will cause some memory leak: since some systems use the pointer
* passed to putenv to store the environment string, it can't be freed.
*****************************************************************************/
void main_PutIntVariable( char *psz_name, int i_value )
{
char psz_value[ 256 ]; /* buffer for value */
sprintf( psz_value, "%d", i_value );
main_PutPszVariable( psz_name, psz_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 execpted vlans
*/
p_main->b_audio = 1;
p_main->b_video = 1;
p_main->b_vlans = 0;
}
/*****************************************************************************
* GetConfiguration: parse command line
*****************************************************************************
* Parse command line and configuration file for configuration. If the inline
* help is requested, the function Usage() is called and the function returns
* -1 (causing main() to exit). The messages interface is initialized at this
* 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[] )
{
int c, i_opt;
char * p_pointer;
/* Set default configuration and copy arguments */
p_main->i_argc = i_argc;
p_main->ppsz_argv = ppsz_argv;
p_main->ppsz_env = ppsz_env;
SetDefaultConfiguration();
intf_MsgImm( COPYRIGHT_MESSAGE "\n" );
/* Get the executable name (similar to the basename command) */
p_main->psz_arg0 = p_pointer = ppsz_argv[ 0 ];
while( *p_pointer )
{
if( *p_pointer == '/' )
{
p_main->psz_arg0 = ++p_pointer;
}
else
{
++p_pointer;
}
}
/* Parse command line options */
#ifdef HAVE_GETOPT_H
opterr = 0;
while( ( c = getopt_long( i_argc, ppsz_argv, psz_shortopts, longopts, 0 ) ) != EOF )
{
switch( c )
{
/* General/common options */
case 'h': /* -h, --help */
Usage( SHORT_HELP );
return( -1 );
break;
case 'H': /* -H, --longhelp */
Usage( LONG_HELP );
return( -1 );
break;
case 'v': /* -v, --version */
Version();
return( -1 );
break;
/* Audio options */
case OPT_NOAUDIO: /* --noaudio */
p_main->b_audio = 0;
break;
case OPT_AOUT: /* --aout */
main_PutPszVariable( AOUT_METHOD_VAR, optarg );
break;
case OPT_STEREO: /* --stereo */
main_PutIntVariable( AOUT_STEREO_VAR, 1 );
break;
case OPT_MONO: /* --mono */
main_PutIntVariable( AOUT_STEREO_VAR, 0 );
break;
/* Video options */
case OPT_NOVIDEO: /* --novideo */
p_main->b_video = 0;
break;
case OPT_VOUT: /* --vout */
main_PutPszVariable( VOUT_METHOD_VAR, optarg );
break;
case OPT_DISPLAY: /* --display */
main_PutPszVariable( VOUT_DISPLAY_VAR, optarg );
break;
case OPT_WIDTH: /* --width */
main_PutPszVariable( VOUT_WIDTH_VAR, optarg );
break;
case OPT_HEIGHT: /* --height */
main_PutPszVariable( VOUT_HEIGHT_VAR, optarg );
break;
case 'g': /* -g, --grayscale */
main_PutIntVariable( VOUT_GRAYSCALE_VAR, 1 );
break;
case OPT_COLOR: /* --color */
main_PutIntVariable( VOUT_GRAYSCALE_VAR, 0 );
break;
case OPT_YUV: /* --yuv */
main_PutPszVariable( YUV_METHOD_VAR, optarg );
break;
/* FIXME */
#if 0
/* DVD options */
case 'a':
if ( ! strcmp(optarg, "mpeg") )
main_PutIntVariable( INPUT_DVD_AUDIO_VAR, REQUESTED_MPEG );
else if ( ! strcmp(optarg, "lpcm") )
main_PutIntVariable( INPUT_DVD_AUDIO_VAR, REQUESTED_LPCM );
else if ( ! strcmp(optarg, "off") )
main_PutIntVariable( INPUT_DVD_AUDIO_VAR, REQUESTED_NOAUDIO );
else
main_PutIntVariable( INPUT_DVD_AUDIO_VAR, REQUESTED_AC3 );
break;
#endif
case 'c':
main_PutIntVariable( INPUT_DVD_CHANNEL_VAR, atoi(optarg) );
break;
case 's':
main_PutIntVariable( INPUT_DVD_SUBTITLE_VAR, atoi(optarg) );
break;
/* Input options */
case OPT_VLANS: /* --vlans */
p_main->b_vlans = 1;
break;
case OPT_SERVER: /* --server */
main_PutPszVariable( INPUT_SERVER_VAR, optarg );
break;
case OPT_PORT: /* --port */
main_PutPszVariable( INPUT_PORT_VAR, optarg );
break;
case OPT_BROADCAST: /* --broadcast */
main_PutIntVariable( INPUT_BROADCAST_VAR, 1 );
break;
/* Synchro options */
case OPT_SYNCHRO:
main_PutPszVariable( VPAR_SYNCHRO_VAR, optarg );
break;
/* Interface warning messages level */
case OPT_WARNING: /* --warning */
main_PutIntVariable( INTF_WARNING_VAR, atoi(optarg) );
break;
/* Internal error: unknown option */
case '?':
default:
intf_ErrMsg( "intf error: unknown option `%s'\n", ppsz_argv[optind - 1] );
Usage( USAGE );
return( EINVAL );
break;
}
}
#endif
/* Parse command line parameters - no check is made for these options */
for( i_opt = optind; i_opt < i_argc; i_opt++ )
{
putenv( ppsz_argv[ i_opt ] );
}
return( 0 );
}
/*****************************************************************************
* Usage: print program usage
*****************************************************************************
* Print a short inline help. Message interface is initialized at this stage.
*****************************************************************************/
static void Usage( int i_fashion )
{
/* Usage */
intf_Msg( "Usage: %s [options] [parameters] [file]...\n",
p_main->psz_arg0 );
if( i_fashion == USAGE )
{
intf_Msg( "Try `%s --help' for more information.\n",
p_main->psz_arg0 );
return;
}
/* Options */
intf_Msg( "\n"
"Options:\n"
" --noaudio \tdisable audio\n"
" --aout <plugin> \taudio output method\n"
" --stereo, --mono \tstereo/mono audio\n"
"\n"
" --novideo \tdisable video\n"
" --vout <plugin> \tvideo output method\n"
" --display <display> \tdisplay string\n"
" --width <w>, --height <h> \tdisplay dimensions\n"
" -g, --grayscale \tgrayscale output\n"
" --color \tcolor output\n"
"\n"
" -a, --dvdaudio <type> \tchoose DVD audio type\n"
" -c, --dvdchannel <channel> \tchoose DVD audio channel\n"
" -s, --dvdsubtitle <channel> \tchoose DVD subtitle channel\n"
"\n"
" --vlans \tenable vlans\n"
" --server <host> \tvideo server address\n"
" --port <port> \tvideo server port\n"
" --broadcast \tlisten to a broadcast\n"
"\n"
" --synchro <type> \tforce synchro algorithm\n"
"\n"
" --warning <level> \tdisplay warning messages\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" );
if( i_fashion == SHORT_HELP )
return;
/* Interface parameters */
intf_Msg( "\n"
"Interface parameters:\n"
" " INTF_INIT_SCRIPT_VAR "=<filename> \tinitialization script\n"
" " INTF_CHANNELS_VAR "=<filename> \tchannels list\n"
" " INTF_WARNING_VAR "=<level> \twarning level\n" );
/* Audio parameters */
intf_Msg( "\n"
"Audio parameters:\n"
" " AOUT_METHOD_VAR "=<method name> \taudio method\n"
" " AOUT_DSP_VAR "=<filename> \tdsp device path\n"
" " AOUT_STEREO_VAR "={1|0} \tstereo or mono output\n"
" " AOUT_RATE_VAR "=<rate> \toutput rate\n" );
/* Video parameters */
intf_Msg( "\n"
"Video parameters:\n"
" " VOUT_METHOD_VAR "=<method name> \tdisplay method\n"
" " VOUT_DISPLAY_VAR "=<display name> \tdisplay used\n"
" " VOUT_WIDTH_VAR "=<width> \tdisplay width\n"
" " VOUT_HEIGHT_VAR "=<height> \tdislay height\n"
" " VOUT_FB_DEV_VAR "=<filename> \tframebuffer device path\n"
" " VOUT_GRAYSCALE_VAR "={1|0} \tgrayscale or color output\n" );
/* DVD parameters */
intf_Msg( "\n"
"DVD parameters:\n"
" " INPUT_DVD_AUDIO_VAR "={ac3|lpcm|mpeg|off} \taudio type\n"
" " INPUT_DVD_CHANNEL_VAR "=[0-15] \taudio channel\n"
" " INPUT_DVD_SUBTITLE_VAR "=[0-31] \tsubtitle channel\n" );
/* Input parameters */
intf_Msg( "\n"
"Input parameters:\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" );
/* Synchro parameters */
intf_Msg( "\n"
"Synchro parameters:\n"
" " VPAR_SYNCHRO_VAR "={I|I+|IP|IP+|IPB} \tsynchro algorithm\n");
}
/*****************************************************************************
* Version: print complete program version
*****************************************************************************
* Print complete program version and build number.
*****************************************************************************/
static void Version( void )
{
intf_Msg( VERSION_MESSAGE
"This program comes with NO WARRANTY, to the extent permitted by law.\n"
"You may redistribute it under the terms of the GNU General Public License;\n"
"see the file named COPYING for details.\n"
"Written by the VideoLAN team at Ecole Centrale, Paris.\n" );
}
/*****************************************************************************
* InitSignalHandler: system signal handler initialization
*****************************************************************************
* Set the signal handlers. SIGTERM is not intercepted, because we need at
* at least a method to kill the program when all other methods failed, and
* when we don't want to use SIGKILL.
*****************************************************************************/
static void InitSignalHandler( void )
{
/* Termination signals */
signal( SIGHUP, FatalSignalHandler );
signal( SIGINT, FatalSignalHandler );
signal( SIGQUIT, FatalSignalHandler );
/* Other signals */
signal( SIGALRM, SimpleSignalHandler );
signal( SIGPIPE, SimpleSignalHandler );
}
/*****************************************************************************
* SimpleSignalHandler: system signal handler
*****************************************************************************
* This function is called when a non fatal signal is received by the program.
*****************************************************************************/
static void SimpleSignalHandler( int i_signal )
{
/* Acknowledge the signal received */
intf_WarnMsg(0, "intf: ignoring signal %d\n", i_signal );
}
/*****************************************************************************
* FatalSignalHandler: system signal handler
*****************************************************************************
* This function is called when a fatal signal is received by the program.
* It tries to end the program in a clean way.
*****************************************************************************/
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 );
signal( SIGINT, SIG_IGN );
signal( SIGQUIT, SIG_IGN );
/* Acknowledge the signal received */
intf_ErrMsgImm("intf: signal %d received, exiting\n", i_signal );
/* Try to terminate everything - this is done by requesting the end of the
* interface thread */
p_main->p_intf->b_die = 1;
}
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