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

   1 /**
   2  * MltService.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 <string.h>
  22 #include "MltService.h"
  23 #include "MltFilter.h"
  24 using namespace Mlt;
  25
  26 Service::Service( ) :
  27         Properties( false ),
  28         instance( NULL )
  29 {
  30 }
  31
  32 Service::Service( Service &service ) :
  33         Properties( false ),
  34         instance( service.get_service( ) )
  35 {
  36         inc_ref( );
  37 }
  38
  39 Service::Service( mlt_service service ) :
  40         Properties( false ),
  41         instance( service )
  42 {
  43         inc_ref( );
  44 }
  45
  46 Service::~Service( )
  47 {
  48         mlt_service_close( instance );
  49 }
  50
  51 mlt_service Service::get_service( )
  52 {
  53         return instance;
  54 }
  55
  56 mlt_properties Service::get_properties( )
  57 {
  58         return mlt_service_properties( get_service( ) );
  59 }
  60
  61 int Service::connect_producer( Service &producer, int index )
  62 {
  63         return mlt_service_connect_producer( get_service( ), producer.get_service( ), index );
  64 }
  65
  66 Service *Service::producer( )
  67 {
  68         return new Service( mlt_service_producer( get_service( ) ) );
  69 }
  70
  71 Service *Service::consumer( )
  72 {
  73         return new Service( mlt_service_consumer( get_service( ) ) );
  74 }
  75
  76 Frame *Service::get_frame( int index )
  77 {
  78         mlt_frame frame = NULL;
  79         mlt_service_get_frame( get_service( ), &frame, index );
  80         Frame *result = new Frame( frame );
  81         mlt_frame_close( frame );
  82         return result;
  83 }
  84
  85 service_type Service::type( )
  86 {
  87         service_type type = invalid_type;
  88         if ( is_valid( ) )
  89         {
  90                 char *mlt_type = get( "mlt_type" );
  91                 char *resource = get( "resource" );
  92                 if ( mlt_type == NULL )
  93                         type = unknown_type;
  94                 else if ( !strcmp( mlt_type, "producer" ) )
  95                         type = producer_type;
  96                 else if ( !strcmp( mlt_type, "mlt_producer" ) )
  97                 {
  98                         if ( resource == NULL )
  99                                 type = producer_type;
 100                         else if ( !strcmp( resource, "<playlist>" ) )
 101                                 type = playlist_type;
 102                         else if ( !strcmp( resource, "<tractor>" ) )
 103                                 type = tractor_type;
 104                         else if ( !strcmp( resource, "<multitrack>" ) )
 105                                 type = multitrack_type;
 106                 }
 107                 else if ( !strcmp( mlt_type, "filter" ) )
 108                         type = filter_type;
 109                 else if ( !strcmp( mlt_type, "transition" ) )
 110                         type = transition_type;
 111                 else if ( !strcmp( mlt_type, "consumer" ) )
 112                         type = consumer_type;
 113                 else
 114                         type = unknown_type;
 115         }
 116         return type;
 117 }
 118
 119 int Service::attach( Filter &filter )
 120 {
 121         return mlt_service_attach( get_service( ), filter.get_filter( ) );
 122 }
 123
 124 int Service::detach( Filter &filter )
 125 {
 126         return mlt_service_detach( get_service( ), filter.get_filter( ) );
 127 }
 128
 129 Filter *Service::filter( int index )
 130 {
 131         return new Filter( mlt_service_filter( get_service( ), index ) );
 132 }
 133