alsa-utils/alsactl/alsactl.c

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1998-10-29 23:45:59 +01:00
/*
* Advanced Linux Sound Architecture Control Program
* Copyright (c) 1997 by Perex, APS, University of South Bohemia
*
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "alsactl.h"
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#include "aconfig.h"
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#include <getopt.h>
#include <stdarg.h>
#define HELPID_HELP 1000
#define HELPID_FILE 1001
#define HELPID_DEBUG 1002
#define HELPID_VERSION 1003
extern int yyparse( void );
extern int linecount;
extern FILE *yyin;
extern int yydebug;
int debugflag = 0;
char cfgfile[ 512 ] = ALSACTL_FILE;
void error( const char *fmt, ... )
{
va_list va;
va_start( va, fmt );
fprintf( stderr, "alsactl: " );
vfprintf( stderr, fmt, va );
fprintf( stderr, "\n" );
va_end( va );
}
static void help( void )
{
printf( "Usage: alsactl <options> command\n" );
printf( "\nAvailable options:\n" );
printf( " -h,--help this help\n" );
printf( " -f,--file # configuration file (default " ALSACTL_FILE ")\n" );
printf( " -d,--debug debug mode\n" );
printf( " -v,--version print version of this program\n" );
printf( "\nAvailable commands:\n" );
printf( " store <card #> store current driver setup for one or each soundcards\n" );
printf( " to configuration file\n" );
printf( " restore <card #> restore current driver setup for one or each soundcards\n" );
printf( " from configuration file\n" );
}
static int store_setup( const char *cardname )
{
int err;
if ( !cardname ) {
unsigned int card_mask, idx;
card_mask = snd_cards_mask();
if ( !card_mask ) {
error( "No soundcards found..." );
return 1;
}
soundcard_setup_init();
for ( idx = 0; idx < 32; idx++ ) {
if ( card_mask & (1 << idx) ) { /* find each installed soundcards */
if ( (err = soundcard_setup_collect( idx )) ) {
soundcard_setup_done();
return err;
}
}
}
} else {
int cardno;
cardno = snd_card_name( cardname );
if ( cardno ) {
error( "Cannot find soundcard '%s'...", cardname );
return 1;
}
soundcard_setup_init();
if ( (err = soundcard_setup_load( cfgfile )) )
return err;
if ( (err = soundcard_setup_collect( cardno )) ) {
soundcard_setup_done();
return err;
}
}
err = soundcard_setup_write( cfgfile );
soundcard_setup_done();
return err;
}
static int restore_setup( const char *cardname )
{
int err, idx, cardno = -1;
unsigned int card_mask;
if ( cardname ) {
cardno = snd_card_name( cardname );
if ( cardno < 0 ) {
error( "Cannot find soundcard '%s'...", cardname );
return 1;
}
}
card_mask = snd_cards_mask();
if ( !card_mask ) {
error( "No soundcards found..." );
return 1;
}
soundcard_setup_init();
for ( idx = 0; idx < 32; idx++ ) {
if ( card_mask & (1 << idx) ) { /* find each installed soundcards */
if ( (err = soundcard_setup_collect( idx )) ) {
soundcard_setup_done();
return err;
}
}
}
if ( (err = soundcard_setup_load( cfgfile )) )
return err;
err = soundcard_setup_process( cardno );
soundcard_setup_done();
return err;
}
int main( int argc, char *argv[] )
{
int morehelp;
struct option long_option[] = {
{ "help", 0, NULL, HELPID_HELP },
{ "file", 1, NULL, HELPID_FILE },
{ "debug", 0, NULL, HELPID_DEBUG },
{ "version", 0, NULL, HELPID_VERSION },
{ NULL, 0, NULL, 0 },
};
morehelp = 0;
while ( 1 ) {
int c;
if ( ( c = getopt_long( argc, argv, "hf:dv", long_option, NULL ) ) < 0 ) break;
switch ( c ) {
case 'h':
case HELPID_HELP:
morehelp++;
break;
case 'f':
case HELPID_FILE:
strncpy( cfgfile, optarg, sizeof( cfgfile ) - 1 );
cfgfile[ sizeof( cfgfile ) - 1 ] = 0;
break;
case 'd':
case HELPID_DEBUG:
debugflag = 1;
break;
case 'v':
case HELPID_VERSION:
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printf( "alsactl version " SND_UTIL_VERSION "\n" );
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return 0;
default:
fprintf( stderr, "\07Invalid switch or option needs an argument.\n" );
morehelp++;
}
}
if ( morehelp ) {
help();
return 0;
}
if ( argc - optind <= 0 ) {
fprintf( stderr, "alsactl: Specify command...\n" );
return 1;
}
if ( !strcmp( argv[ optind ], "store" ) ) {
return store_setup( argc - optind > 1 ? argv[ optind + 1 ] : NULL );
} else if ( !strcmp( argv[ optind ], "restore" ) ) {
return restore_setup( argc - optind > 1 ? argv[ optind + 1 ] : NULL );
}
return 0;
}