research.m1stereo.tv/gitweb/ - melted/blob - mlt++/src/MltFilter.cpp

   1 /**
   2  * MltFilter.cpp - 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 #include <stdlib.h>
  22 #include <string.h>
  23 #include "MltFilter.h"
  24 using namespace Mlt;
  25
  26 Filter::Filter( char *id, char *arg ) :
  27         destroy( true ),
  28         instance( NULL )
  29 {
  30         if ( arg != NULL )
  31         {
  32                 instance = mlt_factory_filter( id, arg );
  33         }
  34         else
  35         {
  36                 if ( strchr( id, ':' ) )
  37                 {
  38                         char *temp = strdup( id );
  39                         char *arg = strchr( temp, ':' ) + 1;
  40                         *( arg - 1 ) = '\0';
  41                         instance = mlt_factory_filter( temp, arg );
  42                         free( temp );
  43                 }
  44                 else
  45                 {
  46                         instance = mlt_factory_filter( id, NULL );
  47                 }
  48         }
  49 }
  50
  51 Filter::Filter( Filter &filter ) :
  52         destroy( false ),
  53         instance( filter.get_filter( ) )
  54 {
  55 }
  56
  57 Filter::Filter( mlt_filter filter ) :
  58         destroy( false ),
  59         instance( filter )
  60 {
  61 }
  62
  63 Filter::~Filter( )
  64 {
  65         if ( destroy )
  66                 mlt_filter_close( instance );
  67 }
  68
  69 mlt_filter Filter::get_filter( )
  70 {
  71         return instance;
  72 }
  73
  74 mlt_service Filter::get_service( )
  75 {
  76         return mlt_filter_service( get_filter( ) );
  77 }
  78
  79 int Filter::connect( Service &service, int index )
  80 {
  81         return mlt_filter_connect( get_filter( ), service.get_service( ), index );
  82 }
  83
  84 void Filter::set_in_and_out( int in, int out )
  85 {
  86         mlt_filter_set_in_and_out( get_filter( ), in, out );
  87 }
  88
  89 int Filter::get_in( )
  90 {
  91         return mlt_filter_get_in( get_filter( ) );
  92 }
  93
  94 int Filter::get_out( )
  95 {
  96         return mlt_filter_get_out( get_filter( ) );
  97 }
  98
  99 int Filter::get_track( )
 100 {
 101         return mlt_filter_get_track( get_filter( ) );
 102 }
 103