1 /*****************************************************************************
2 * core.c: Core libvlc new API functions : initialization, exceptions handling
3 *****************************************************************************
4 * Copyright (C) 2005 the VideoLAN team
7 * Authors: Clément Stenac <zorglub@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
23 #include "libvlc_internal.h"
24 #include <vlc/libvlc.h>
26 #include <vlc_interface.h>
32 static const char nomemstr[] = "Insufficient memory";
34 /*************************************************************************
36 *************************************************************************/
37 void libvlc_exception_init( libvlc_exception_t *p_exception )
39 p_exception->b_raised = 0;
40 p_exception->psz_message = NULL;
43 void libvlc_exception_clear( libvlc_exception_t *p_exception )
45 if( p_exception->psz_message != nomemstr )
46 free( p_exception->psz_message );
47 p_exception->psz_message = NULL;
48 p_exception->b_raised = 0;
51 int libvlc_exception_raised( const libvlc_exception_t *p_exception )
53 return (NULL != p_exception) && p_exception->b_raised;
57 libvlc_exception_get_message( const libvlc_exception_t *p_exception )
59 if( p_exception->b_raised == 1 && p_exception->psz_message )
61 return p_exception->psz_message;
66 void libvlc_exception_raise( libvlc_exception_t *p_exception,
67 const char *psz_format, ... )
71 /* does caller care about exceptions ? */
72 if( p_exception == NULL ) return;
74 /* remove previous exception if it wasn't cleared */
75 libvlc_exception_clear( p_exception );
77 va_start( args, psz_format );
78 if( vasprintf( &p_exception->psz_message, psz_format, args ) == -1)
79 p_exception->psz_message = (char *)nomemstr;
82 p_exception->b_raised = 1;
85 libvlc_instance_t * libvlc_new( int argc, const char *const *argv,
86 libvlc_exception_t *p_e )
88 libvlc_instance_t *p_new;
90 libvlc_int_t *p_libvlc_int = libvlc_InternalCreate();
91 if( !p_libvlc_int ) RAISENULL( "VLC initialization failed" );
93 p_new = (libvlc_instance_t *)malloc( sizeof( libvlc_instance_t ) );
94 if( !p_new ) RAISENULL( "Out of memory" );
96 const char *my_argv[argc + 2];
98 my_argv[0] = "libvlc"; /* dummy arg0, skipped by getopt() et al */
99 for( int i = 0; i < argc; i++ )
100 my_argv[i + 1] = argv[i];
101 my_argv[argc + 1] = NULL; /* C calling conventions require a NULL */
103 /** \todo Look for interface settings. If we don't have any, add -I dummy */
104 /* Because we probably don't want a GUI by default */
106 if( libvlc_InternalInit( p_libvlc_int, argc + 1, my_argv ) )
107 RAISENULL( "VLC initialization failed" );
109 p_new->p_libvlc_int = p_libvlc_int;
111 p_new->b_playlist_locked = 0;
112 p_new->ref_count = 1;
113 p_new->p_callback_list = NULL;
114 vlc_mutex_init(p_libvlc_int, &p_new->instance_lock);
115 vlc_mutex_init(p_libvlc_int, &p_new->event_callback_lock);
117 libvlc_event_init(p_new, p_e);
122 void libvlc_retain( libvlc_instance_t *p_instance )
124 assert( p_instance != NULL );
125 assert( p_instance->ref_count < UINT_MAX );
127 vlc_mutex_lock( &p_instance->instance_lock );
128 p_instance->ref_count++;
129 vlc_mutex_unlock( &p_instance->instance_lock );
132 void libvlc_release( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
134 vlc_mutex_t *lock = &p_instance->instance_lock;
137 assert( p_instance->ref_count > 0 );
139 vlc_mutex_lock( lock );
140 refs = --p_instance->ref_count;
142 libvlc_event_fini( p_instance, p_e );
143 vlc_mutex_unlock( lock );
147 vlc_mutex_destroy( lock );
148 vlc_mutex_destroy( &p_instance->event_callback_lock );
149 libvlc_InternalCleanup( p_instance->p_libvlc_int );
150 libvlc_InternalDestroy( p_instance->p_libvlc_int, VLC_FALSE );
155 int libvlc_get_vlc_id( libvlc_instance_t *p_instance )
157 return p_instance->p_libvlc_int->i_object_id;