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         instance( NULL )
  28 {
  29         if ( arg != NULL )
  30         {
  31                 instance = mlt_factory_filter( id, arg );
  32         }
  33         else
  34         {
  35                 if ( strchr( id, ':' ) )
  36                 {
  37                         char *temp = strdup( id );
  38                         char *arg = strchr( temp, ':' ) + 1;
  39                         *( arg - 1 ) = '\0';
  40                         instance = mlt_factory_filter( temp, arg );
  41                         free( temp );
  42                 }
  43                 else
  44                 {
  45                         instance = mlt_factory_filter( id, NULL );
  46                 }
  47         }
  48 }
  49
  50 Filter::Filter( Service &filter ) :
  51         instance( NULL )
  52 {
  53         if ( filter.type( ) == filter_type )
  54         {
  55                 instance = ( mlt_filter )filter.get_service( );
  56                 inc_ref( );
  57         }
  58 }
  59
  60 Filter::Filter( Filter &filter ) :
  61         instance( filter.get_filter( ) )
  62 {
  63         inc_ref( );
  64 }
  65
  66 Filter::Filter( mlt_filter filter ) :
  67         instance( filter )
  68 {
  69         inc_ref( );
  70 }
  71
  72 Filter::~Filter( )
  73 {
  74         mlt_filter_close( instance );
  75 }
  76
  77 mlt_filter Filter::get_filter( )
  78 {
  79         return instance;
  80 }
  81
  82 mlt_service Filter::get_service( )
  83 {
  84         return mlt_filter_service( get_filter( ) );
  85 }
  86
  87 int Filter::connect( Service &service, int index )
  88 {
  89         return mlt_filter_connect( get_filter( ), service.get_service( ), index );
  90 }
  91
  92 void Filter::set_in_and_out( int in, int out )
  93 {
  94         mlt_filter_set_in_and_out( get_filter( ), in, out );
  95 }
  96
  97 int Filter::get_in( )
  98 {
  99         return mlt_filter_get_in( get_filter( ) );
 100 }
 101
 102 int Filter::get_out( )
 103 {
 104         return mlt_filter_get_out( get_filter( ) );
 105 }
 106
 107 int Filter::get_track( )
 108 {
 109         return mlt_filter_get_track( get_filter( ) );
 110 }
 111