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 *****************************************************************************/
24 #include "libvlc_internal.h"
25 #include <vlc/libvlc.h>
27 #include <vlc_interface.h>
34 static const char nomemstr[] = "Insufficient memory";
36 /*************************************************************************
38 *************************************************************************/
39 void libvlc_exception_init( libvlc_exception_t *p_exception )
41 p_exception->b_raised = 0;
42 p_exception->psz_message = NULL;
45 void libvlc_exception_clear( libvlc_exception_t *p_exception )
47 if( NULL == p_exception )
49 if( p_exception->psz_message != nomemstr )
50 free( p_exception->psz_message );
51 p_exception->psz_message = NULL;
52 p_exception->b_raised = 0;
55 int libvlc_exception_raised( const libvlc_exception_t *p_exception )
57 return (NULL != p_exception) && p_exception->b_raised;
61 libvlc_exception_get_message( const libvlc_exception_t *p_exception )
63 if( p_exception->b_raised == 1 && p_exception->psz_message )
65 return p_exception->psz_message;
70 static void libvlc_exception_not_handled( const char *psz )
72 fprintf( stderr, "*** LibVLC Exception not handled: %s\nSet a breakpoint in '%s' to debug.\n",
77 void libvlc_exception_raise( libvlc_exception_t *p_exception,
78 const char *psz_format, ... )
83 /* Unformat-ize the message */
84 va_start( args, psz_format );
85 if( vasprintf( &psz, psz_format, args ) == -1)
86 psz = (char *)nomemstr;
89 /* Does caller care about exceptions ? */
90 if( p_exception == NULL ) {
91 /* Print something, so that lazy third-parties can easily
92 * notice that something may have gone unnoticedly wrong */
93 libvlc_exception_not_handled( psz );
99 /* Make sure that there is no unnoticed previous exception */
100 if( p_exception->b_raised )
102 libvlc_exception_not_handled( p_exception->psz_message );
103 libvlc_exception_clear( p_exception );
105 p_exception->psz_message = psz;
106 p_exception->b_raised = 1;
109 libvlc_instance_t * libvlc_new( int argc, const char *const *argv,
110 libvlc_exception_t *p_e )
112 libvlc_instance_t *p_new;
114 libvlc_int_t *p_libvlc_int = libvlc_InternalCreate();
115 if( !p_libvlc_int ) RAISENULL( "VLC initialization failed" );
117 p_new = malloc( sizeof( libvlc_instance_t ) );
118 if( !p_new ) RAISENULL( "Out of memory" );
120 const char *my_argv[argc + 2];
122 my_argv[0] = "libvlc"; /* dummy arg0, skipped by getopt() et al */
123 for( int i = 0; i < argc; i++ )
124 my_argv[i + 1] = argv[i];
125 my_argv[argc + 1] = NULL; /* C calling conventions require a NULL */
127 /** \todo Look for interface settings. If we don't have any, add -I dummy */
128 /* Because we probably don't want a GUI by default */
130 i_ret = libvlc_InternalInit( p_libvlc_int, argc + 1, my_argv );
133 libvlc_InternalDestroy( p_libvlc_int );
135 if( i_ret == VLC_EEXITSUCCESS )
138 RAISENULL( "VLC initialization failed" );
141 p_new->p_libvlc_int = p_libvlc_int;
142 p_new->libvlc_vlm.p_vlm = NULL;
143 p_new->libvlc_vlm.p_event_manager = NULL;
144 p_new->libvlc_vlm.pf_release = NULL;
145 p_new->b_playlist_locked = 0;
146 p_new->ref_count = 1;
147 p_new->verbosity = 1;
148 p_new->p_callback_list = NULL;
149 vlc_mutex_init(&p_new->instance_lock);
150 vlc_mutex_init(&p_new->event_callback_lock);
155 void libvlc_retain( libvlc_instance_t *p_instance )
157 assert( p_instance != NULL );
158 assert( p_instance->ref_count < UINT_MAX );
160 vlc_mutex_lock( &p_instance->instance_lock );
161 p_instance->ref_count++;
162 vlc_mutex_unlock( &p_instance->instance_lock );
165 void libvlc_release( libvlc_instance_t *p_instance )
167 vlc_mutex_t *lock = &p_instance->instance_lock;
170 vlc_mutex_lock( lock );
171 assert( p_instance->ref_count > 0 );
172 refs = --p_instance->ref_count;
173 vlc_mutex_unlock( lock );
177 vlc_mutex_destroy( lock );
178 vlc_mutex_destroy( &p_instance->event_callback_lock );
179 if( p_instance->libvlc_vlm.pf_release )
180 p_instance->libvlc_vlm.pf_release( p_instance );
181 libvlc_InternalCleanup( p_instance->p_libvlc_int );
182 libvlc_InternalDestroy( p_instance->p_libvlc_int );
187 int libvlc_add_intf( libvlc_instance_t *p_i, const char *name,
188 libvlc_exception_t *p_e )
190 if( libvlc_InternalAddIntf( p_i->p_libvlc_int, name ) )
192 libvlc_exception_raise( p_e, "Interface initialization failed" );
197 void libvlc_wait( libvlc_instance_t *p_i )
199 libvlc_int_t *p_libvlc = p_i->p_libvlc_int;
200 libvlc_InternalWait( p_libvlc );
203 const char * libvlc_get_version(void)
205 return VLC_Version();
208 const char * libvlc_get_compiler(void)
210 return VLC_Compiler();
213 const char * libvlc_get_changeset(void)
215 extern const char psz_vlc_changeset[];
216 return psz_vlc_changeset;
219 /* export internal libvlc_instance for ugly hacks with libvlccore */
220 vlc_object_t *libvlc_get_vlc_instance( libvlc_instance_t* p_instance )
222 vlc_object_hold( p_instance->p_libvlc_int ) ;
223 return (vlc_object_t*) p_instance->p_libvlc_int ;
226 void libvlc_free( void *ptr )