]> git.sesse.net Git - vlc/blobdiff - src/control/core.c
control/core.c: Fix a warning about lock being an usunsed variable, by using lock.
[vlc] / src / control / core.c
index e4432e84b9ed932ab00941b11939022d3f9a4b31..69f94bdd6d45cc790d5ec9330dfb0ecf216f1184 100644 (file)
@@ -4,7 +4,7 @@
  * Copyright (C) 2005 the VideoLAN team
  * $Id$
  *
- * Authors: Clent Stenac <zorglub@videolan.org>
+ * Authors: Clément Stenac <zorglub@videolan.org>
  *
  * 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
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  *****************************************************************************/
-
-#include <libvlc_internal.h>
+#include "libvlc_internal.h"
 #include <vlc/libvlc.h>
 
-#include <vlc/intf.h>
+#include <vlc_interface.h>
+
+#include <stdarg.h>
+#include <limits.h>
+#include <assert.h>
+
+static const char nomemstr[] = "Insufficient memory";
 
 /*************************************************************************
  * Exceptions handling
  *************************************************************************/
-inline void libvlc_exception_init( libvlc_exception_t *p_exception )
+void libvlc_exception_init( libvlc_exception_t *p_exception )
 {
     p_exception->b_raised = 0;
     p_exception->psz_message = NULL;
@@ -37,18 +42,19 @@ inline void libvlc_exception_init( libvlc_exception_t *p_exception )
 
 void libvlc_exception_clear( libvlc_exception_t *p_exception )
 {
-    if( p_exception->psz_message )
+    if( p_exception->psz_message != nomemstr )
         free( p_exception->psz_message );
     p_exception->psz_message = NULL;
     p_exception->b_raised = 0;
 }
 
-inline int libvlc_exception_raised( libvlc_exception_t *p_exception )
+int libvlc_exception_raised( const libvlc_exception_t *p_exception )
 {
-    return p_exception->b_raised;
+    return (NULL != p_exception) && p_exception->b_raised;
 }
 
-inline char* libvlc_exception_get_message( libvlc_exception_t *p_exception )
+const char *
+libvlc_exception_get_message( const libvlc_exception_t *p_exception )
 {
     if( p_exception->b_raised == 1 && p_exception->psz_message )
     {
@@ -57,62 +63,96 @@ inline char* libvlc_exception_get_message( libvlc_exception_t *p_exception )
     return NULL;
 }
 
-inline void libvlc_exception_raise( libvlc_exception_t *p_exception,
-                                    char *psz_message )
+void libvlc_exception_raise( libvlc_exception_t *p_exception,
+                                           const char *psz_format, ... )
 {
+    va_list args;
+
+    /* does caller care about exceptions ? */
     if( p_exception == NULL ) return;
+
+    /* remove previous exception if it wasn't cleared */
+    libvlc_exception_clear( p_exception );
+
+    va_start( args, psz_format );
+    if( vasprintf( &p_exception->psz_message, psz_format, args ) == -1)
+        p_exception->psz_message = (char *)nomemstr;
+    va_end( args );
+
     p_exception->b_raised = 1;
-    if( psz_message )
-        p_exception->psz_message = strdup( psz_message );
 }
 
-libvlc_instance_t * libvlc_new( int argc, char **argv,
-                                libvlc_exception_t *p_exception )
+libvlc_instance_t * libvlc_new( int argc, const char *const *argv,
+                                libvlc_exception_t *p_e )
 {
-    int i_vlc_id;
     libvlc_instance_t *p_new;
-    vlc_t *p_vlc;
 
-    i_vlc_id = VLC_Create();
-    p_vlc = (vlc_t* ) vlc_current_object( i_vlc_id );
+    libvlc_int_t *p_libvlc_int = libvlc_InternalCreate();
+    if( !p_libvlc_int ) RAISENULL( "VLC initialization failed" );
 
-    if( !p_vlc )
-    {
-        libvlc_exception_raise( p_exception, "VLC initialization failed" );
-        return NULL;
-    }
     p_new = (libvlc_instance_t *)malloc( sizeof( libvlc_instance_t ) );
+    if( !p_new ) RAISENULL( "Out of memory" );
+
+    const char *my_argv[argc + 2];
+
+    my_argv[0] = "libvlc"; /* dummy arg0, skipped by getopt() et al */
+    for( int i = 0; i < argc; i++ )
+         my_argv[i + 1] = argv[i];
+    my_argv[argc + 1] = NULL; /* C calling conventions require a NULL */
 
     /** \todo Look for interface settings. If we don't have any, add -I dummy */
     /* Because we probably don't want a GUI by default */
 
-    if( !p_new )
-    {
-        libvlc_exception_raise( p_exception, "Out of memory" );
-        return NULL;
-    }
+    if( libvlc_InternalInit( p_libvlc_int, argc + 1, my_argv ) )
+        RAISENULL( "VLC initialization failed" );
 
-    VLC_Init( i_vlc_id, argc, argv );
+    p_new->p_libvlc_int = p_libvlc_int;
+    p_new->p_vlm = NULL;
+    p_new->b_playlist_locked = 0;
+    p_new->ref_count = 1;
+    p_new->p_callback_list = NULL;
+    vlc_mutex_init(p_libvlc_int, &p_new->instance_lock);
+    vlc_mutex_init(p_libvlc_int, &p_new->event_callback_lock);
+    libvlc_event_init(p_new, p_e);
 
-    p_new->p_vlc = p_vlc;
-    p_new->p_playlist = (playlist_t *)vlc_object_find( p_new->p_vlc,
-                                VLC_OBJECT_PLAYLIST, FIND_CHILD );
+    return p_new;
+}
+
+void libvlc_retain( libvlc_instance_t *p_instance )
+{
+    assert( p_instance != NULL );
+    assert( p_instance->ref_count < UINT_MAX );
+
+    vlc_mutex_lock( &p_instance->instance_lock );
+    p_instance->ref_count++;
+    vlc_mutex_unlock( &p_instance->instance_lock );
+}
 
-    if( !p_new->p_playlist )
+void libvlc_release( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
+{
+    vlc_mutex_t *lock = &p_instance->instance_lock;
+    int refs;
+
+    assert( p_instance->ref_count > 0 );
+
+    vlc_mutex_lock( lock );
+    refs = --p_instance->ref_count;
+    if( refs == 0 )
+        libvlc_event_fini( p_instance, p_e );
+    vlc_mutex_unlock( lock );
+
+    if( refs == 0 )
     {
-        libvlc_exception_raise( p_exception, "Playlist creation failed" );
-        return NULL;
+        vlc_mutex_destroy( lock );
+        vlc_mutex_destroy( &p_instance->event_callback_lock );
+        libvlc_InternalCleanup( p_instance->p_libvlc_int );
+        libvlc_InternalDestroy( p_instance->p_libvlc_int, VLC_FALSE );
+        free( p_instance );
     }
-    p_new->i_vlc_id = i_vlc_id;
-
-    return p_new;
 }
 
-void libvlc_destroy( libvlc_instance_t *p_instance )
+int libvlc_get_vlc_id( libvlc_instance_t *p_instance )
 {
-    if( p_instance->p_playlist )
-        vlc_object_release( p_instance->p_playlist );
-    vlc_object_release( p_instance->p_vlc );
-    VLC_CleanUp( p_instance->i_vlc_id );
-    VLC_Destroy( p_instance->i_vlc_id );
+    return p_instance->p_libvlc_int->i_object_id;
 }