2 * MltGeometry.h - 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 #ifndef _MLTPP_GEOMETRY_H
22 #define _MLTPP_GEOMETRY_H
26 #include <framework/mlt.h>
30 // Just for consistent naming purposes
31 class MLTPP_DECLSPEC GeometryItem
34 struct mlt_geometry_item_s item;
36 mlt_geometry_item get_item( ) { return &item; }
37 bool key( ) { return item.key != 0; }
38 int frame( ) { return item.frame; }
39 void frame( int value ) { item.frame = value; }
40 float x( ) { return item.x; }
41 void x( float value ) { item.f[0] = 1; item.x = value; }
42 float y( ) { return item.y; }
43 void y( float value ) { item.f[1] = 1; item.y = value; }
44 float w( ) { return item.w; }
45 void w( float value ) { item.f[2] = 1; item.w = value; }
46 float h( ) { return item.h; }
47 void h( float value ) { item.f[3] = 1; item.h = value; }
48 float mix( ) { return item.mix; }
49 void mix( float value ) { item.f[4] = 1; item.mix = value; }
52 class MLTPP_DECLSPEC Geometry
55 mlt_geometry geometry;
57 Geometry( char *data = NULL, int length = 0, int nw = -1, int nh = -1 );
59 int parse( char *data, int length, int nw = -1, int nh = -1 );
60 // Fetch a geometry item for an absolute position
61 int fetch( GeometryItem &item, float position );
62 int fetch( GeometryItem *item, float position );
63 // Specify a geometry item at an absolute position
64 int insert( GeometryItem &item );
65 int insert( GeometryItem *item );
66 // Remove the key at the specified position
67 int remove( int position );
69 // Get the key at the position or the next following
70 int next_key( GeometryItem &item, int position );
71 int next_key( GeometryItem *item, int position );
72 int prev_key( GeometryItem &item, int position );
73 int prev_key( GeometryItem *item, int position );
74 // Serialise the current geometry
75 char *serialise( int in, int out );