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 static void libvlc_exception_not_handled( const char *psz )
68 fprintf( stderr, "*** LibVLC Exception not handled: %s\nSet a breakpoint in '%s' to debug.\n",
72 void libvlc_exception_raise( libvlc_exception_t *p_exception,
73 const char *psz_format, ... )
78 /* Unformat-ize the message */
79 va_start( args, psz_format );
80 if( vasprintf( &psz, psz_format, args ) == -1)
81 psz = (char *)nomemstr;
84 /* Does caller care about exceptions ? */
85 if( p_exception == NULL ) {
86 /* Print something, so lazy third-parties can easily
87 * notice that something may have gone unoticedly wrong */
88 libvlc_exception_not_handled( psz );
92 /* Make sure that there is no unoticed previous exception */
93 if( p_exception->b_raised )
95 libvlc_exception_not_handled( p_exception->psz_message );
96 libvlc_exception_clear( p_exception );
98 p_exception->psz_message = psz;
99 p_exception->b_raised = 1;
102 libvlc_instance_t * libvlc_new( int argc, const char *const *argv,
103 libvlc_exception_t *p_e )
105 libvlc_instance_t *p_new;
107 libvlc_int_t *p_libvlc_int = libvlc_InternalCreate();
108 if( !p_libvlc_int ) RAISENULL( "VLC initialization failed" );
110 p_new = (libvlc_instance_t *)malloc( sizeof( libvlc_instance_t ) );
111 if( !p_new ) RAISENULL( "Out of memory" );
113 /** \todo Look for interface settings. If we don't have any, add -I dummy */
114 /* Because we probably don't want a GUI by default */
116 /* WARNING: caller must pass a program path in argv[0], which can be a dummy path
117 * this is used by libvlc to locate, this is leveraged by plugins */
118 if( libvlc_InternalInit( p_libvlc_int, argc, argv ) )
119 RAISENULL( "VLC initialization failed" );
121 p_new->p_libvlc_int = p_libvlc_int;
123 p_new->b_playlist_locked = 0;
124 p_new->ref_count = 1;
125 p_new->p_callback_list = NULL;
126 vlc_mutex_init(p_libvlc_int, &p_new->instance_lock);
127 vlc_mutex_init(p_libvlc_int, &p_new->event_callback_lock);
129 libvlc_event_init(p_new, p_e);
134 void libvlc_retain( libvlc_instance_t *p_instance )
136 assert( p_instance != NULL );
137 assert( p_instance->ref_count < UINT_MAX );
139 vlc_mutex_lock( &p_instance->instance_lock );
140 p_instance->ref_count++;
141 vlc_mutex_unlock( &p_instance->instance_lock );
144 void libvlc_release( libvlc_instance_t *p_instance )
146 vlc_mutex_t *lock = &p_instance->instance_lock;
149 assert( p_instance->ref_count > 0 );
151 vlc_mutex_lock( lock );
152 refs = --p_instance->ref_count;
154 libvlc_event_fini( p_instance );
155 vlc_mutex_unlock( lock );
159 vlc_mutex_destroy( lock );
160 vlc_mutex_destroy( &p_instance->event_callback_lock );
161 libvlc_InternalCleanup( p_instance->p_libvlc_int );
162 libvlc_InternalDestroy( p_instance->p_libvlc_int, VLC_FALSE );
167 int libvlc_get_vlc_id( libvlc_instance_t *p_instance )
169 return p_instance->p_libvlc_int->i_object_id;