* Copyright (C) 2004-2005 Ushodaya Enterprises Limited
* Author: Charles Yates <charles.yates@pandora.be>
*
- * 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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
+#include <pthread.h>
#include "mlt_properties.h"
#include "mlt_events.h"
void mlt_event_inc_ref( mlt_event this )
{
- if ( this != NULL && this->owner != NULL )
+ if ( this != NULL )
this->ref_count ++;
}
void mlt_event_close( mlt_event this )
{
- if ( this != NULL && this->owner != NULL )
+ if ( this != NULL )
{
if ( -- this->ref_count == 1 )
this->owner = NULL;
event->listener = listener;
event->service = service;
mlt_properties_set_data( listeners, temp, event, 0, ( mlt_destructor )mlt_event_close, NULL );
+ mlt_event_inc_ref( event );
}
}
- if ( event != NULL )
- mlt_event_inc_ref( event );
}
}
return event;
}
}
+typedef struct
+{
+ int done;
+ pthread_cond_t cond;
+ pthread_mutex_t mutex;
+}
+condition_pair;
+
+static void mlt_events_listen_for( mlt_properties this, condition_pair *pair )
+{
+ pthread_mutex_lock( &pair->mutex );
+ if ( pair->done == 0 )
+ {
+ pthread_cond_signal( &pair->cond );
+ pthread_mutex_unlock( &pair->mutex );
+ }
+}
+
+mlt_event mlt_events_setup_wait_for( mlt_properties this, char *id )
+{
+ condition_pair *pair = malloc( sizeof( condition_pair ) );
+ pair->done = 0;
+ pthread_cond_init( &pair->cond, NULL );
+ pthread_mutex_init( &pair->mutex, NULL );
+ pthread_mutex_lock( &pair->mutex );
+ return mlt_events_listen( this, pair, id, ( mlt_listener )mlt_events_listen_for );
+}
+
+void mlt_events_wait_for( mlt_properties this, mlt_event event )
+{
+ if ( event != NULL )
+ {
+ condition_pair *pair = event->service;
+ pthread_cond_wait( &pair->cond, &pair->mutex );
+ }
+}
+
+void mlt_events_close_wait_for( mlt_properties this, mlt_event event )
+{
+ if ( event != NULL )
+ {
+ condition_pair *pair = event->service;
+ event->owner = NULL;
+ pair->done = 0;
+ pthread_mutex_unlock( &pair->mutex );
+ pthread_mutex_destroy( &pair->mutex );
+ pthread_cond_destroy( &pair->cond );
+ }
+}
+
/** Fetch the events object.
*/