void track_service( mlt_field field, void *service, mlt_destructor destructor )
{
mlt_properties properties = mlt_field_properties( field );
int registered = mlt_properties_get_int( properties, "registered" );
char *key = mlt_properties_get( properties, "registered" );
mlt_properties_set_data( properties, key, service, 0, destructor, NULL );
mlt_properties_set_int( properties, "registered", ++ registered );
}
void mlt_field_close( mlt_field self )
{
if ( self != NULL && mlt_properties_dec_ref( mlt_field_properties( self ) ) <= 0 )
{
//mlt_tractor_close( self->tractor );
//mlt_multitrack_close( self->multitrack );
free( self );
}
}
int mlt_field_plant_transition( mlt_field self, mlt_transition that, int a_track, int b_track )
{
// Connect the transition to the last producer
int result = mlt_transition_connect( that, self->producer, a_track, b_track );
// If successful, then we'll use self for connecting in the future
if ( result == 0 )
{
// This is now the new producer
self->producer = MLT_TRANSITION_SERVICE( that );
// Reconnect tractor to new producer
mlt_tractor_connect( self->tractor, self->producer );
// Fire an event
mlt_events_fire( mlt_field_properties( self ), "service-changed", NULL );
}
return result;
}
int mlt_field_plant_filter( mlt_field self, mlt_filter that, int track )
{
// Connect the filter to the last producer
int result = mlt_filter_connect( that, self->producer, track );
// If successful, then we'll use this for connecting in the future
if ( result == 0 )
{
// This is now the new producer
self->producer = MLT_FILTER_SERVICE( that );
// Reconnect tractor to new producer
mlt_tractor_connect( self->tractor, self->producer );
// Fire an event
mlt_events_fire( mlt_field_properties( self ), "service-changed", NULL );
}
return result;
}
void mlt_field_disconnect_service( mlt_field self, mlt_service service )
{
mlt_service p = mlt_service_producer( service );
mlt_service c = mlt_service_consumer( service);
int i;
switch ( mlt_service_identify(c) )
{
case filter_type:
i = mlt_filter_get_track( MLT_FILTER(c) );
mlt_service_connect_producer( c, p, i );
break;
case transition_type:
i = mlt_transition_get_a_track ( MLT_TRANSITION(c) );
mlt_service_connect_producer( c, p, i );
MLT_TRANSITION(c)->producer = p;
break;
case tractor_type:
self->producer = p;
mlt_tractor_connect( MLT_TRACTOR(c), p );
default:
break;
}
mlt_events_fire( mlt_field_properties( self ), "service-changed", NULL );
}