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