2 * MltFilteredConsumer.cpp - MLT Wrapper
3 * Copyright (C) 2004-2005 Charles Yates
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "MltFilteredConsumer.h"
24 FilteredConsumer::FilteredConsumer( Profile& profile, const char *id, const char *arg ) :
25 Consumer( profile, id, arg )
27 // Create a reference to the first service
28 first = new Service( *this );
31 FilteredConsumer::FilteredConsumer( Consumer &consumer ) :
34 // Create a reference to the first service
35 first = new Service( *this );
38 FilteredConsumer::~FilteredConsumer( )
40 // Delete the reference to the first service
44 int FilteredConsumer::connect( Service &service )
46 // All producers must connect to the first service, hence the use of the virtual here
47 return first->connect_producer( service );
50 int FilteredConsumer::attach( Filter &filter )
53 if ( filter.is_valid( ) )
55 Service *producer = first->producer( );
56 error = filter.connect( *producer );
59 first->connect_producer( filter );
61 first = new Service( filter );
72 int FilteredConsumer::last( Filter &filter )
75 if ( filter.is_valid( ) )
77 Service *producer = this->producer( );
78 error = filter.connect( *producer );
80 connect_producer( filter );
90 int FilteredConsumer::detach( Filter &filter )
92 if ( filter.is_valid( ) )
94 Service *it = new Service( *first );
95 while ( it->is_valid( ) && it->get_service( ) != filter.get_service( ) )
97 Service *consumer = it->consumer( );
101 if ( it->get_service( ) == filter.get_service( ) )
103 Service *producer = it->producer( );
104 Service *consumer = it->consumer( );
105 consumer->connect_producer( *producer );
106 Service dummy( NULL );
107 it->connect_producer( dummy );
108 if ( first->get_service( ) == it->get_service( ) )
111 first = new Service( *consumer );