2 * mlt_transition.h -- abstraction for all transition services
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
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 General Public License as published by
8 * 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 #ifndef _MLT_TRANSITION_H_
22 #define _MLT_TRANSITION_H_
24 #include "mlt_service.h"
26 /** The interface definition for all transitions.
29 struct mlt_transition_s
31 // We're implementing service here
32 struct mlt_service_s parent
;
35 void ( *close
)( mlt_transition
);
37 // protected transition method
38 mlt_frame ( *process
)( mlt_transition
, mlt_frame
, mlt_frame
);
43 // track and in/out points
51 /** Public final methods
54 extern int mlt_transition_init( mlt_transition
this, void *child
);
55 extern mlt_service
mlt_transition_service( mlt_transition
this );
56 extern mlt_properties
mlt_transition_properties( mlt_transition
this );
57 extern int mlt_transition_connect( mlt_transition
this, mlt_service producer
, int a_track
, int b_track
);
58 extern void mlt_transition_set_in_and_out( mlt_transition
this, mlt_timecode in
, mlt_timecode out
);
59 extern int mlt_transition_get_a_track( mlt_transition
this );
60 extern int mlt_transition_get_b_track( mlt_transition
this );
61 extern mlt_timecode
mlt_transition_get_in( mlt_transition
this );
62 extern mlt_timecode
mlt_transition_get_out( mlt_transition
this );
63 extern void mlt_transition_close( mlt_transition
this );