research.m1stereo.tv/gitweb/ - melted/blob - mlt++/src/MltGeometry.h

   1 /**
   2  * MltGeometry.h - MLT Wrapper
   3  * Copyright (C) 2004-2005 Charles Yates
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  *
   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.
  10  *
  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.
  15  *
  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.
  19  */
  20
  21 #ifndef _MLTPP_GEOMETRY_H
  22 #define _MLTPP_GEOMETRY_H
  23
  24 #include <framework/mlt.h>
  25
  26 namespace Mlt
  27 {
  28         // Just for consistent naming purposes
  29         class GeometryItem
  30         {
  31                 private:
  32                         struct mlt_geometry_item_s item;
  33                 public:
  34                         mlt_geometry_item get_item( ) { return &item; }
  35                         bool key( ) { return item.key; }
  36                         int frame( ) { return item.frame; }
  37                         void frame( int value ) { item.frame = value; }
  38                         float x( ) { return item.x; }
  39                         void x( float value ) { item.f[0] = 1; item.x = value; }
  40                         float y( ) { return item.y; }
  41                         void y( float value ) { item.f[1] = 1; item.y = value; }
  42                         float w( ) { return item.w; }
  43                         void w( float value ) { item.f[2] = 1; item.w = value; }
  44                         float h( ) { return item.h; }
  45                         void h( float value ) { item.f[3] = 1; item.h = value; }
  46                         float mix( ) { return item.mix; }
  47                         void mix( float value ) { item.f[4] = 1; item.mix = value; }
  48         };
  49
  50         class Geometry
  51         {
  52                 private:
  53                         mlt_geometry geometry;
  54                 public:
  55                         Geometry( char *data = NULL, int length = 0, int nw = -1, int nh = -1 );
  56                         ~Geometry( );
  57                         int parse( char *data, int length, int nw = -1, int nh = -1 );
  58                         // Fetch a geometry item for an absolute position
  59                         int fetch( GeometryItem &item, float position );
  60                         int fetch( GeometryItem *item, float position );
  61                         // Specify a geometry item at an absolute position
  62                         int insert( GeometryItem &item );
  63                         int insert( GeometryItem *item );
  64                         // Remove the key at the specified position
  65                         int remove( int position );
  66                         // Get the key at the position or the next following
  67                         int next_key( GeometryItem &item, int position );
  68                         int next_key( GeometryItem *item, int position );
  69                         int prev_key( GeometryItem &item, int position );
  70                         int prev_key( GeometryItem *item, int position );
  71                         // Serialise the current geometry
  72                         char *serialise( int in, int out );
  73                         char *serialise( );
  74         };
  75 }
  76
  77 #endif
  78