2 * MltFilteredProducer.cpp - MLT Wrapper
3 * Copyright (C) 2004-2005 Charles Yates
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as published
8 * by the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include "MltFilteredProducer.h"
24 FilteredProducer
::FilteredProducer( char *id
, char *arg
) :
27 // Create a reference to the last service
28 last
= new Service( *this );
31 FilteredProducer
::~FilteredProducer( )
33 // Delete the reference to the last service
37 int FilteredProducer
::attach( Filter
&filter
)
40 if ( filter
.is_valid( ) )
42 Service
*consumer
= last
->consumer( );
43 filter
.connect_producer( *last
);
44 if ( consumer
->is_valid( ) )
45 consumer
->connect_producer( filter
);
48 last
= new Service( filter
);
57 int FilteredProducer
::detach( Filter
&filter
)
59 if ( filter
.is_valid( ) )
61 Service
*it
= new Service( *last
);
62 while ( it
->is_valid( ) && it
->get_service( ) != filter
.get_service( ) )
64 Service
*producer
= it
->producer( );
68 if ( it
->get_service( ) == filter
.get_service( ) )
70 Service
*producer
= it
->producer( );
71 Service
*consumer
= it
->consumer( );
72 if ( consumer
->is_valid( ) )
73 consumer
->connect_producer( *producer
);
74 Producer
dummy( "colour" );
75 dummy
.connect_producer( *it
);
76 if ( last
->get_service( ) == it
->get_service( ) )
79 last
= new Service( *producer
);