src/control/core.c

   1 /*****************************************************************************
   2  * core.c: Core libvlc new API functions : initialization
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   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.
  13  *
  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.
  18  *
  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
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include "libvlc_internal.h"
  29 #include <vlc/libvlc.h>
  30
  31 #include <vlc_interface.h>
  32 #include <vlc_vlm.h>
  33
  34 #include <stdarg.h>
  35 #include <limits.h>
  36 #include <assert.h>
  37
  38 static const char nomemstr[] = "Insufficient memory";
  39
  40 libvlc_instance_t * libvlc_new( int argc, const char *const *argv )
  41 {
  42     libvlc_instance_t *p_new = malloc (sizeof (*p_new));
  43     if (unlikely(p_new == NULL))
  44         return NULL;
  45
  46     libvlc_init_threads ();
  47
  48     const char *my_argv[argc + 2];
  49     my_argv[0] = "libvlc"; /* dummy arg0, skipped by getopt() et al */
  50     for( int i = 0; i < argc; i++ )
  51          my_argv[i + 1] = argv[i];
  52     my_argv[argc + 1] = NULL; /* C calling conventions require a NULL */
  53
  54     libvlc_int_t *p_libvlc_int = libvlc_InternalCreate();
  55     if (unlikely (p_libvlc_int == NULL))
  56         goto error;
  57
  58     if (libvlc_InternalInit( p_libvlc_int, argc + 1, my_argv ))
  59     {
  60         libvlc_InternalDestroy( p_libvlc_int );
  61         goto error;
  62     }
  63
  64     p_new->p_libvlc_int = p_libvlc_int;
  65     p_new->libvlc_vlm.p_vlm = NULL;
  66     p_new->libvlc_vlm.p_event_manager = NULL;
  67     p_new->libvlc_vlm.pf_release = NULL;
  68     p_new->ref_count = 1;
  69     p_new->verbosity = 1;
  70     p_new->p_callback_list = NULL;
  71     vlc_mutex_init(&p_new->instance_lock);
  72     return p_new;
  73
  74 error:
  75     libvlc_deinit_threads ();
  76     free (p_new);
  77     return NULL;
  78 }
  79
  80 void libvlc_retain( libvlc_instance_t *p_instance )
  81 {
  82     assert( p_instance != NULL );
  83     assert( p_instance->ref_count < UINT_MAX );
  84
  85     vlc_mutex_lock( &p_instance->instance_lock );
  86     p_instance->ref_count++;
  87     vlc_mutex_unlock( &p_instance->instance_lock );
  88 }
  89
  90 void libvlc_release( libvlc_instance_t *p_instance )
  91 {
  92     vlc_mutex_t *lock = &p_instance->instance_lock;
  93     int refs;
  94
  95     vlc_mutex_lock( lock );
  96     assert( p_instance->ref_count > 0 );
  97     refs = --p_instance->ref_count;
  98     vlc_mutex_unlock( lock );
  99
 100     if( refs == 0 )
 101     {
 102         vlc_mutex_destroy( lock );
 103         if( p_instance->libvlc_vlm.pf_release )
 104             p_instance->libvlc_vlm.pf_release( p_instance );
 105         libvlc_InternalCleanup( p_instance->p_libvlc_int );
 106         libvlc_InternalDestroy( p_instance->p_libvlc_int );
 107         free( p_instance );
 108         libvlc_deinit_threads ();
 109     }
 110 }
 111
 112 int libvlc_add_intf( libvlc_instance_t *p_i, const char *name )
 113 {
 114     return libvlc_InternalAddIntf( p_i->p_libvlc_int, name ) ? -1 : 0;
 115 }
 116
 117 void libvlc_wait( libvlc_instance_t *p_i )
 118 {
 119     libvlc_int_t *p_libvlc = p_i->p_libvlc_int;
 120     libvlc_InternalWait( p_libvlc );
 121 }
 122
 123 const char * libvlc_get_version(void)
 124 {
 125     return VLC_Version();
 126 }
 127
 128 const char * libvlc_get_compiler(void)
 129 {
 130     return VLC_Compiler();
 131 }
 132
 133 const char * libvlc_get_changeset(void)
 134 {
 135     extern const char psz_vlc_changeset[];
 136     return psz_vlc_changeset;
 137 }