* $Id $
*
* Authors: Filippo Carone <filippo@carone.org>
+ * Pierre d'Herbemont <pdherbemont # 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
#include "libvlc_internal.h"
#include <vlc/libvlc.h>
+#include <vlc_playlist.h>
/*
* Private functions
*/
-static int handle_event( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval,
- void *p_data )
-{
- struct libvlc_callback_entry_t *entry = p_data; /* FIXME: we need some locking here */
- libvlc_event_t event;
- event.type = entry->i_event_type;
- switch ( event.type )
- {
- case VOLUME_CHANGED:
- event.value_type = BOOLEAN_EVENT;
- break;
- case INPUT_POSITION_CHANGED:
- break;
- default:
- break;
- }
- event.old_value = oldval;
- event.new_value = newval;
- /* Call the client entry */
- entry->f_callback( entry->p_instance, &event, entry->p_user_data );
+/*
+ * Internal libvlc functions
+ */
- return VLC_SUCCESS;
+/**************************************************************************
+ * libvlc_event_init (internal) :
+ *
+ * initialization function.
+ **************************************************************************/
+void libvlc_event_init( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
+{
+ /* Will certainly be used to install libvlc_instance event */
}
-static inline void add_callback_entry( struct libvlc_callback_entry_t *entry,
- struct libvlc_callback_entry_list_t **list )
+/**************************************************************************
+ * libvlc_event_fini (internal) :
+ *
+ * finalization function.
+ **************************************************************************/
+void libvlc_event_fini( libvlc_instance_t *p_instance )
{
- struct libvlc_callback_entry_list_t *new_listitem;
-
- /* malloc/free strategy:
- * - alloc-ded in add_callback_entry
- * - free-ed by libvlc_event_remove_callback
- * - free-ed in libvlc_destroy threw libvlc_event_remove_callback
- * when entry is destroyed
- */
- new_listitem = malloc( sizeof( struct libvlc_callback_entry_list_t ) );
- new_listitem->elmt = entry;
- new_listitem->next = *list;
- new_listitem->prev = NULL;
-
- if(*list)
- (*list)->prev = new_listitem;
-
- *list = new_listitem;
}
-/*
- * Public libvlc functions
- */
-
-void libvlc_event_add_callback( libvlc_instance_t *p_instance,
- libvlc_event_type_t i_event_type,
- libvlc_callback_t f_callback,
- void *user_data,
- libvlc_exception_t *p_e )
+/**************************************************************************
+ * libvlc_event_manager_init (internal) :
+ *
+ * Init an object's event manager.
+ **************************************************************************/
+libvlc_event_manager_t *
+libvlc_event_manager_new( void * p_obj, libvlc_instance_t * p_libvlc_inst,
+ libvlc_exception_t *p_e )
{
- struct libvlc_callback_entry_t *entry;
- const char *callback_name = NULL;
- int res;
-
- if ( !f_callback )
- RAISEVOID (" Callback function is null ");
-
- /* malloc/free strategy:
- * - alloc-ded in libvlc_event_add_callback
- * - free-ed by libvlc_event_add_callback on error
- * - free-ed by libvlc_event_remove_callback
- * - free-ed in libvlc_destroy threw libvlc_event_remove_callback
- * when entry is destroyed
- */
- entry = malloc( sizeof( struct libvlc_callback_entry_t ) );
- entry->f_callback = f_callback;
- entry->i_event_type = i_event_type;
- entry->p_user_data = user_data;
-
- switch ( i_event_type )
- {
- case VOLUME_CHANGED:
- callback_name = "volume-change";
- break;
- case INPUT_POSITION_CHANGED:
- break;
- default:
- free( entry );
- RAISEVOID( "Unsupported event." );
- }
+ libvlc_event_manager_t * p_em;
- res = var_AddCallback( p_instance->p_libvlc_int,
- callback_name,
- handle_event,
- entry );
-
- if (res != VLC_SUCCESS)
+ p_em = malloc(sizeof( libvlc_event_manager_t ));
+ if( !p_em )
{
- free ( entry );
- RAISEVOID("Internal callback registration was not successful. Callback not registered.");
+ libvlc_exception_raise( p_e, "No Memory left" );
+ return NULL;
}
-
- add_callback_entry( entry, &p_instance->p_callback_list );
- return;
+ p_em->p_obj = p_obj;
+ p_em->p_libvlc_instance = p_libvlc_inst;
+ libvlc_retain( p_libvlc_inst );
+ ARRAY_INIT( p_em->listeners_groups );
+ vlc_mutex_init( p_libvlc_inst->p_libvlc_int, &p_em->object_lock );
+ vlc_mutex_init( p_libvlc_inst->p_libvlc_int, &p_em->event_sending_lock );
+ return p_em;
}
-void libvlc_event_remove_all_callbacks( libvlc_instance_t *p_instance,
- libvlc_exception_t *p_e )
+/**************************************************************************
+ * libvlc_event_manager_release (internal) :
+ *
+ * Init an object's event manager.
+ **************************************************************************/
+void libvlc_event_manager_release( libvlc_event_manager_t * p_em )
{
- struct libvlc_callback_entry_list_t *p_listitem = p_instance->p_callback_list;
+ libvlc_event_listeners_group_t * listeners_group;
+ libvlc_event_listener_t * listener;
- while( p_listitem )
- {
- libvlc_event_remove_callback( p_instance,
- p_listitem->elmt->i_event_type,
- p_listitem->elmt->f_callback,
- p_listitem->elmt->p_user_data,
- p_e);
- /* libvlc_event_remove_callback will reset the p_callback_list */
- p_listitem = p_instance->p_callback_list;
- }
+ vlc_mutex_destroy( &p_em->event_sending_lock );
+ vlc_mutex_destroy( &p_em->object_lock );
+
+ FOREACH_ARRAY( listeners_group, p_em->listeners_groups )
+ FOREACH_ARRAY( listener, listeners_group->listeners )
+ free( listener );
+ FOREACH_END()
+ ARRAY_RESET( listeners_group->listeners );
+ free( listeners_group );
+ FOREACH_END()
+ ARRAY_RESET( p_em->listeners_groups );
+
+ libvlc_release( p_em->p_libvlc_instance, NULL );
+ free( p_em );
}
-void libvlc_event_remove_callback( libvlc_instance_t *p_instance,
- libvlc_event_type_t i_event_type,
- libvlc_callback_t f_callback,
- void *p_user_data,
- libvlc_exception_t *p_e )
+/**************************************************************************
+ * libvlc_event_manager_register_event_type (internal) :
+ *
+ * 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 )
{
- struct libvlc_callback_entry_list_t *p_listitem = p_instance->p_callback_list;
-
- while( p_listitem )
+ libvlc_event_listeners_group_t * listeners_group;
+ listeners_group = malloc(sizeof(libvlc_event_listeners_group_t));
+ if( !listeners_group )
{
- if( p_listitem->elmt->f_callback == f_callback
- && ( p_listitem->elmt->i_event_type == i_event_type )
- && ( p_listitem->elmt->p_user_data == p_user_data )
-
- )
- {
- const char * callback_name = NULL;
- int res;
+ libvlc_exception_raise( p_e, "No Memory left" );
+ return;
+ }
- if( p_listitem->prev )
- p_listitem->prev->next = p_listitem->next;
- else
- p_instance->p_callback_list = p_listitem->next;
+ listeners_group->event_type = event_type;
+ ARRAY_INIT( listeners_group->listeners );
- p_listitem->next->prev = p_listitem->prev;
+ vlc_mutex_lock( &p_em->object_lock );
+ ARRAY_APPEND( p_em->listeners_groups, listeners_group );
+ vlc_mutex_unlock( &p_em->object_lock );
+}
- switch ( i_event_type )
- {
- case VOLUME_CHANGED:
- callback_name = "volume-change";
- break;
- case INPUT_POSITION_CHANGED:
- break;
- default:
- RAISEVOID( "Unsupported event." );
- }
+/**************************************************************************
+ * libvlc_event_send (internal) :
+ *
+ * Send a callback.
+ **************************************************************************/
+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_cached;
+ libvlc_event_listener_t * listener;
+ libvlc_event_listener_t * array_listeners_cached = NULL;
+ int i, i_cached_listeners = 0;
- res = var_DelCallback( p_instance->p_libvlc_int,
- callback_name, handle_event,
- p_listitem->elmt );
+ /* Fill event with the sending object now */
+ p_event->p_obj = p_em->p_obj;
- if (res != VLC_SUCCESS)
+ /* Here a read/write lock would be nice */
+
+ vlc_mutex_lock( &p_em->object_lock );
+ FOREACH_ARRAY( listeners_group, p_em->listeners_groups )
+ if( listeners_group->event_type == p_event->type )
+ {
+ if( listeners_group->listeners.i_size <= 0 )
+ break;
+
+ /* Cache a copy of the listener to avoid locking issues */
+ i_cached_listeners = listeners_group->listeners.i_size;
+ array_listeners_cached = malloc(sizeof(libvlc_event_listener_t)*(i_cached_listeners));
+ if( !array_listeners_cached )
{
- RAISEVOID("Internal callback unregistration was not successful. Callback not unregistered.");
+ printf( "Can't alloc memory in libvlc_event_send" );
+ break;
}
- free( p_listitem->elmt ); /* FIXME: need some locking here */
- free( p_listitem );
+ listener_cached = array_listeners_cached;
+ FOREACH_ARRAY( listener, listeners_group->listeners )
+ memcpy( listener_cached, listener, sizeof(libvlc_event_listener_t));
+ listener_cached++;
+ FOREACH_END()
break;
}
- p_listitem = p_listitem->next;
+ FOREACH_END()
+
+ vlc_mutex_unlock( &p_em->object_lock );
+
+ /* Here a read/write lock would be *especially* nice,
+ * We would be able to send event without blocking */
+ /* The only reason for this lock is to be able to wait the
+ * End of events sending with libvlc_event_manager_lock_event_sending.
+ * This can be useful to make sure a callback is completely detached. */
+ vlc_mutex_lock( &p_em->event_sending_lock );
+ listener_cached = array_listeners_cached;
+ for( i = 0; i < i_cached_listeners; i++ )
+ {
+ 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_attach (public) :
+ *
+ * Add a callback for an event.
+ **************************************************************************/
+void libvlc_event_attach( 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_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;
+
+ vlc_mutex_lock( &p_event_manager->object_lock );
+ FOREACH_ARRAY( listeners_group, p_event_manager->listeners_groups )
+ if( listeners_group->event_type == listener->event_type )
+ {
+ ARRAY_APPEND( listeners_group->listeners, listener );
+ vlc_mutex_unlock( &p_event_manager->object_lock );
+ return;
+ }
+ FOREACH_END()
+ 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(a));
+}
+
+/**************************************************************************
+ * libvlc_event_detach (public) :
+ *
+ * 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_detach_lock_state( p_event_manager, event_type, pf_callback,
+ p_user_data, libvlc_UnLocked, p_e );
+}
+
+/**************************************************************************
+ * libvlc_event_detach_no_lock (internal) :
+ *
+ * Remove a callback for an event.
+ **************************************************************************/
+void libvlc_event_detach_lock_state( libvlc_event_manager_t *p_event_manager,
+ libvlc_event_type_t event_type,
+ libvlc_callback_t pf_callback,
+ void *p_user_data,
+ libvlc_lock_state_t lockstate,
+ libvlc_exception_t *p_e )
+{
+ libvlc_event_listeners_group_t * listeners_group;
+ libvlc_event_listener_t * listener;
+
+ if( lockstate == libvlc_UnLocked )
+ vlc_mutex_lock( &p_event_manager->event_sending_lock );
+ vlc_mutex_lock( &p_event_manager->object_lock );
+ 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) */ );
+ vlc_mutex_unlock( &p_event_manager->object_lock );
+ if( lockstate == libvlc_UnLocked )
+ vlc_mutex_unlock( &p_event_manager->event_sending_lock );
+ return;
+ }
+ FOREACH_END()
+ }
+ FOREACH_END()
+ vlc_mutex_unlock( &p_event_manager->object_lock );
+ if( lockstate == libvlc_UnLocked )
+ vlc_mutex_unlock( &p_event_manager->event_sending_lock );
+
+ 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 );
}
projects / vlc / blobdiff