#include <vlc/libvlc.h>
#include <vlc_playlist.h>
-
/*
* Private functions
*/
-
-/*
- * Internal libvlc functions
- */
-
-/**************************************************************************
- * libvlc_event_init (internal) :
- *
- * initialization function.
- **************************************************************************/
-void libvlc_event_init( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
+static bool
+listeners_are_equal( libvlc_event_listener_t * listener1,
+ libvlc_event_listener_t * listener2 )
{
- /* Will certainly be used to install libvlc_instance event */
+ return listener1->event_type == listener2->event_type &&
+ listener1->pf_callback == listener2->pf_callback &&
+ listener1->p_user_data == listener2->p_user_data;
}
-/**************************************************************************
- * libvlc_event_fini (internal) :
- *
- * finalization function.
- **************************************************************************/
-void libvlc_event_fini( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
+static bool
+group_contains_listener( libvlc_event_listeners_group_t * group,
+ libvlc_event_listener_t * searched_listener )
{
+ int i;
+ for( i = 0; i < vlc_array_count(&group->listeners); i++ )
+ {
+ if( listeners_are_equal(searched_listener, vlc_array_item_at_index(&group->listeners, i)) )
+ return true;
+ }
+ return false;
}
+/*
+ * Internal libvlc functions
+ */
+
/**************************************************************************
* libvlc_event_manager_init (internal) :
*
* Init an object's event manager.
**************************************************************************/
libvlc_event_manager_t *
-libvlc_event_manager_init( void * p_obj, libvlc_instance_t * p_libvlc_inst,
+libvlc_event_manager_new( void * p_obj, libvlc_instance_t * p_libvlc_inst,
libvlc_exception_t *p_e )
{
libvlc_event_manager_t * p_em;
- p_em = malloc(sizeof( libvlc_event_manager_t ));
- if( !p_em )
- {
- libvlc_exception_raise( p_e, "No Memory left" );
- return NULL;
- }
-
- p_em->p_obj = p_obj;
- p_em->p_libvlc_instance = p_libvlc_inst;
- ARRAY_INIT( p_em->listeners_groups );
+ p_em = malloc(sizeof( libvlc_event_manager_t ));
+ if( !p_em )
+ {
+ libvlc_exception_raise( p_e, "No Memory left" );
+ return NULL;
+ }
- return p_em;
+ p_em->p_obj = p_obj;
+ p_em->p_libvlc_instance = p_libvlc_inst;
+ libvlc_retain( p_libvlc_inst );
+ vlc_array_init( &p_em->listeners_groups );
+ vlc_mutex_init( &p_em->object_lock );
+ vlc_mutex_init_recursive( &p_em->event_sending_lock );
+ return p_em;
}
/**************************************************************************
**************************************************************************/
void libvlc_event_manager_release( libvlc_event_manager_t * p_em )
{
- libvlc_event_listeners_group_t * listeners_group;
- libvlc_event_listener_t * listener;
-
- FOREACH_ARRAY( listeners_group, p_em->listeners_groups )
- FOREACH_ARRAY( listener, listeners_group->listeners )
- free( listener );
- FOREACH_END()
- free( listeners_group );
- FOREACH_END()
- free( p_em );
+ libvlc_event_listeners_group_t * p_lg;
+ int i,j ;
+
+ vlc_mutex_destroy( &p_em->event_sending_lock );
+ vlc_mutex_destroy( &p_em->object_lock );
+
+ for( i = 0; i < vlc_array_count(&p_em->listeners_groups); i++)
+ {
+ p_lg = vlc_array_item_at_index( &p_em->listeners_groups, i );
+
+ for( j = 0; j < vlc_array_count(&p_lg->listeners); j++)
+ free( vlc_array_item_at_index( &p_lg->listeners, j ) );
+
+ vlc_array_clear( &p_lg->listeners );
+ free( p_lg );
+ }
+ vlc_array_clear( &p_em->listeners_groups );
+ libvlc_release( p_em->p_libvlc_instance );
+ free( p_em );
}
/**************************************************************************
* Init an object's event manager.
**************************************************************************/
void libvlc_event_manager_register_event_type(
- libvlc_event_manager_t * p_em,
- libvlc_event_type_t event_type,
- libvlc_exception_t * p_e )
+ libvlc_event_manager_t * p_em,
+ libvlc_event_type_t event_type,
+ libvlc_exception_t * p_e )
{
- libvlc_event_listeners_group_t * listeners_group;
- listeners_group = malloc(sizeof(libvlc_event_listeners_group_t));
- if( !listeners_group )
- {
- libvlc_exception_raise( p_e, "No Memory left" );
- return;
- }
-
- listeners_group->event_type = event_type;
- ARRAY_INIT( listeners_group->listeners );
-
- ARRAY_APPEND( p_em->listeners_groups, listeners_group );
+ libvlc_event_listeners_group_t * listeners_group;
+ listeners_group = malloc(sizeof(libvlc_event_listeners_group_t));
+ if( !listeners_group )
+ {
+ libvlc_exception_raise( p_e, "No Memory left" );
+ return;
+ }
+
+ listeners_group->event_type = event_type;
+ vlc_array_init( &listeners_group->listeners );
+
+ vlc_mutex_lock( &p_em->object_lock );
+ vlc_array_append( &p_em->listeners_groups, listeners_group );
+ vlc_mutex_unlock( &p_em->object_lock );
}
/**************************************************************************
void libvlc_event_send( libvlc_event_manager_t * p_em,
libvlc_event_t * p_event )
{
- libvlc_event_listeners_group_t * listeners_group;
- libvlc_event_listener_t * listener;
- /* Fill event with the sending object now */
- p_event->p_obj = p_em->p_obj;
-
- FOREACH_ARRAY( listeners_group, p_em->listeners_groups )
- if( listeners_group->event_type == p_event->type )
- {
- /* We found the group, now send every one the event */
- FOREACH_ARRAY( listener, listeners_group->listeners )
- listener->pf_callback( p_event );
- FOREACH_END()
- break;
- }
- FOREACH_END()
+ libvlc_event_listeners_group_t * listeners_group = NULL;
+ libvlc_event_listener_t * listener_cached;
+ libvlc_event_listener_t * listener;
+ libvlc_event_listener_t * array_listeners_cached = NULL;
+ int i, i_cached_listeners = 0;
+
+ /* Fill event with the sending object now */
+ p_event->p_obj = p_em->p_obj;
+
+ /* Here a read/write lock would be nice */
+
+ vlc_mutex_lock( &p_em->object_lock );
+ for( i = 0; i < vlc_array_count(&p_em->listeners_groups); i++)
+ {
+ listeners_group = vlc_array_item_at_index(&p_em->listeners_groups, i);
+ if( listeners_group->event_type == p_event->type )
+ {
+ if( vlc_array_count( &listeners_group->listeners ) <= 0 )
+ break;
+
+ /* Cache a copy of the listener to avoid locking issues */
+ i_cached_listeners = vlc_array_count(&listeners_group->listeners);
+ array_listeners_cached = malloc(sizeof(libvlc_event_listener_t)*(i_cached_listeners));
+ if( !array_listeners_cached )
+ {
+ printf( "Can't alloc memory in libvlc_event_send" );
+ break;
+ }
+
+ listener_cached = array_listeners_cached;
+ for( i = 0; i < vlc_array_count(&listeners_group->listeners); i++)
+ {
+ listener = vlc_array_item_at_index(&listeners_group->listeners, i);
+ memcpy( listener_cached, listener, sizeof(libvlc_event_listener_t) );
+ listener_cached++;
+ }
+ break;
+ }
+ }
+
+ if( !listeners_group )
+ {
+ free( array_listeners_cached );
+ return;
+ }
+
+ vlc_mutex_unlock( &p_em->object_lock );
+
+ vlc_mutex_lock( &p_em->event_sending_lock );
+ listener_cached = array_listeners_cached;
+ listeners_group->b_sublistener_removed = false;
+ for( i = 0; i < i_cached_listeners; i++ )
+ {
+ if( listeners_group->b_sublistener_removed )
+ {
+ /* If a callback was removed, this gets called */
+ bool valid_listener;
+ vlc_mutex_lock( &p_em->object_lock );
+ valid_listener = group_contains_listener( listeners_group, listener_cached );
+ vlc_mutex_unlock( &p_em->object_lock );
+ if( !valid_listener )
+ {
+ listener_cached++;
+ continue;
+ }
+ }
+
+ listener_cached->pf_callback( p_event, listener_cached->p_user_data );
+ listener_cached++;
+ }
+ vlc_mutex_unlock( &p_em->event_sending_lock );
+
+ free( array_listeners_cached );
}
/*
* Public libvlc functions
*/
+/**************************************************************************
+ * libvlc_event_type_name (public) :
+ *
+ * Get the char * name of an event type.
+ **************************************************************************/
+static const char event_type_to_name[][35] =
+{
+#define EVENT(a) [a]=#a
+ EVENT(libvlc_MediaMetaChanged),
+ EVENT(libvlc_MediaSubItemAdded),
+ EVENT(libvlc_MediaDurationChanged),
+ EVENT(libvlc_MediaPreparsedChanged),
+ EVENT(libvlc_MediaFreed),
+ EVENT(libvlc_MediaStateChanged),
+
+ EVENT(libvlc_MediaPlayerNothingSpecial),
+ EVENT(libvlc_MediaPlayerOpening),
+ EVENT(libvlc_MediaPlayerBuffering),
+ EVENT(libvlc_MediaPlayerPlaying),
+ EVENT(libvlc_MediaPlayerPaused),
+ EVENT(libvlc_MediaPlayerStopped),
+ EVENT(libvlc_MediaPlayerForward),
+ EVENT(libvlc_MediaPlayerBackward),
+ EVENT(libvlc_MediaPlayerEndReached),
+ EVENT(libvlc_MediaPlayerTimeChanged),
+ EVENT(libvlc_MediaPlayerPositionChanged),
+ EVENT(libvlc_MediaPlayerSeekableChanged),
+ EVENT(libvlc_MediaPlayerPausableChanged),
+
+ EVENT(libvlc_MediaListItemAdded),
+ EVENT(libvlc_MediaListWillAddItem),
+ EVENT(libvlc_MediaListItemDeleted),
+ EVENT(libvlc_MediaListWillDeleteItem),
+
+ EVENT(libvlc_MediaListViewItemAdded),
+ EVENT(libvlc_MediaListViewWillAddItem),
+ EVENT(libvlc_MediaListViewItemDeleted),
+ EVENT(libvlc_MediaListViewWillDeleteItem),
+
+ EVENT(libvlc_MediaListPlayerPlayed),
+ EVENT(libvlc_MediaListPlayerNextItemSet),
+ EVENT(libvlc_MediaListPlayerStopped),
+
+ EVENT(libvlc_MediaDiscovererStarted),
+ EVENT(libvlc_MediaDiscovererEnded)
+#undef EVENT
+};
+
+static const char unkwown_event_name[] = "Unknown Event";
+
+const char * libvlc_event_type_name( libvlc_event_type_t event_type )
+{
+ if( event_type >= sizeof(event_type_to_name)/sizeof(event_type_to_name[0]))
+ return unkwown_event_name;
+ return event_type_to_name[event_type];
+}
+
/**************************************************************************
* libvlc_event_attach (public) :
*
void *p_user_data,
libvlc_exception_t *p_e )
{
- libvlc_event_listeners_group_t * listeners_group;
- libvlc_event_listener_t * listener;
- listener = malloc(sizeof(libvlc_event_listener_t));
- if( !listener )
- {
- libvlc_exception_raise( p_e, "No Memory left" );
- return;
- }
-
- listener->event_type = event_type;
- listener->p_user_data = p_user_data;
- listener->pf_callback = pf_callback;
-
- FOREACH_ARRAY( listeners_group, p_event_manager->listeners_groups )
- if( listeners_group->event_type == listener->event_type )
- {
- ARRAY_APPEND( listeners_group->listeners, listener );
- return;
- }
- FOREACH_END()
-
- free(listener);
- libvlc_exception_raise( p_e,
- "This object event manager doesn't know about '%s' events",
- libvlc_event_type_name(a));
+ libvlc_event_listeners_group_t * listeners_group;
+ libvlc_event_listener_t * listener;
+ int i;
+
+ listener = malloc(sizeof(libvlc_event_listener_t));
+ if( !listener )
+ {
+ libvlc_exception_raise( p_e, "No Memory left" );
+ return;
+ }
+
+ listener->event_type = event_type;
+ listener->p_user_data = p_user_data;
+ listener->pf_callback = pf_callback;
+
+ vlc_mutex_lock( &p_event_manager->object_lock );
+ for( i = 0; i < vlc_array_count(&p_event_manager->listeners_groups); i++ )
+ {
+ listeners_group = vlc_array_item_at_index(&p_event_manager->listeners_groups, i);
+ if( listeners_group->event_type == listener->event_type )
+ {
+ vlc_array_append( &listeners_group->listeners, listener );
+ vlc_mutex_unlock( &p_event_manager->object_lock );
+ return;
+ }
+ }
+ vlc_mutex_unlock( &p_event_manager->object_lock );
+
+ free(listener);
+ libvlc_exception_raise( p_e,
+ "This object event manager doesn't know about '%s' events",
+ libvlc_event_type_name(event_type));
}
/**************************************************************************
* Remove a callback for an event.
**************************************************************************/
void libvlc_event_detach( libvlc_event_manager_t *p_event_manager,
- libvlc_event_type_t event_type,
- libvlc_callback_t pf_callback,
- void *p_user_data,
- libvlc_exception_t *p_e )
+ libvlc_event_type_t event_type,
+ libvlc_callback_t pf_callback,
+ void *p_user_data,
+ libvlc_exception_t *p_e )
{
- libvlc_event_listeners_group_t * listeners_group;
- libvlc_event_listener_t * listener;
- FOREACH_ARRAY( listeners_group, p_event_manager->listeners_groups )
- if( listeners_group->event_type == event_type )
- {
- FOREACH_ARRAY( listener, listeners_group->listeners )
- if( listener->event_type == event_type &&
- listener->pf_callback == pf_callback &&
- listener->p_user_data == p_user_data )
- {
- /* that's our listener */
- free( listener );
- ARRAY_REMOVE( listeners_group->listeners,
- fe_idx /* This comes from the macro (and that's why
- I hate macro) */ );
- return;
- }
- FOREACH_END()
- }
- FOREACH_END()
-
- libvlc_exception_raise( p_e,
- "This object event manager doesn't know about '%i,%p,%p' event observer",
- event_type, pf_callback, p_user_data );
-}
+ libvlc_event_listeners_group_t * listeners_group;
+ libvlc_event_listener_t * listener;
+ int i, j;
+
+ vlc_mutex_lock( &p_event_manager->event_sending_lock );
+ vlc_mutex_lock( &p_event_manager->object_lock );
+ for( i = 0; i < vlc_array_count(&p_event_manager->listeners_groups); i++)
+ {
+ listeners_group = vlc_array_item_at_index(&p_event_manager->listeners_groups, i);
+ if( listeners_group->event_type == event_type )
+ {
+ for( j = 0; j < vlc_array_count(&listeners_group->listeners); j++)
+ {
+ listener = vlc_array_item_at_index(&listeners_group->listeners, j);
+ if( listener->event_type == event_type &&
+ listener->pf_callback == pf_callback &&
+ listener->p_user_data == p_user_data )
+ {
+ /* that's our listener */
+ /* Mark this group as edited so that libvlc_event_send
+ * will recheck what listener to call */
+ listeners_group->b_sublistener_removed = false;
+
+ free( listener );
+ vlc_array_remove( &listeners_group->listeners, j );
+ vlc_mutex_unlock( &p_event_manager->object_lock );
+ vlc_mutex_unlock( &p_event_manager->event_sending_lock );
+ return;
+ }
+ }
+ }
+ }
+ vlc_mutex_unlock( &p_event_manager->object_lock );
+ vlc_mutex_unlock( &p_event_manager->event_sending_lock );
+
+ libvlc_exception_raise( p_e,
+ "This object event manager doesn't know about '%s,%p,%p' event observer",
+ libvlc_event_type_name(event_type), pf_callback, p_user_data );
+}
projects / vlc / blobdiff