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

   1 /**
   2  * MltProducer.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 "MltProducer.h"
  22 #include "MltFilter.h"
  23 using namespace Mlt;
  24
  25 Producer::Producer( ) :
  26         instance( NULL ),
  27         parent_( NULL )
  28 {
  29 }
  30
  31 Producer::Producer( char *id, char *service ) :
  32         instance( NULL ),
  33         parent_( NULL )
  34 {
  35         if ( id != NULL && service != NULL )
  36                 instance = mlt_factory_producer( id, service );
  37         else
  38                 instance = mlt_factory_producer( "fezzik", id != NULL ? id : service );
  39 }
  40
  41 Producer::Producer( Service &producer ) :
  42         instance( NULL ),
  43         parent_( NULL )
  44 {
  45         mlt_service_type type = producer.type( );
  46         if ( type == producer_type || type == playlist_type ||
  47                  type == tractor_type || type == multitrack_type )
  48         {
  49                 instance = ( mlt_producer )producer.get_service( );
  50                 inc_ref( );
  51         }
  52 }
  53
  54 Producer::Producer( mlt_producer producer ) :
  55         instance( producer ),
  56         parent_( NULL )
  57 {
  58         inc_ref( );
  59 }
  60
  61 Producer::Producer( Producer &producer ) :
  62         instance( producer.get_producer( ) ),
  63         parent_( NULL )
  64 {
  65         inc_ref( );
  66 }
  67
  68 Producer::Producer( Producer *producer ) :
  69         instance( producer != NULL ? producer->get_producer( ) : NULL ),
  70         parent_( NULL )
  71 {
  72         if ( is_valid( ) )
  73                 inc_ref( );
  74 }
  75
  76 Producer::~Producer( )
  77 {
  78         delete parent_;
  79         mlt_producer_close( instance );
  80         instance = NULL;
  81 }
  82
  83 mlt_producer Producer::get_producer( )
  84 {
  85         return instance;
  86 }
  87
  88 mlt_producer Producer::get_parent( )
  89 {
  90         return get_producer( ) != NULL && mlt_producer_cut_parent( get_producer( ) ) != NULL ? mlt_producer_cut_parent( get_producer( ) ) : get_producer( );
  91 }
  92
  93 Producer &Producer::parent( )
  94 {
  95         if ( is_cut( ) && parent_ == NULL )
  96                 parent_ = new Producer( get_parent( ) );
  97         return parent_ == NULL ? *this : *parent_;
  98 }
  99
 100 mlt_service Producer::get_service( )
 101 {
 102         return mlt_producer_service( get_producer( ) );
 103 }
 104
 105 int Producer::seek( int position )
 106 {
 107         return mlt_producer_seek( get_producer( ), position );
 108 }
 109
 110 int Producer::position( )
 111 {
 112         return mlt_producer_position( get_producer( ) );
 113 }
 114
 115 int Producer::frame( )
 116 {
 117         return mlt_producer_frame( get_producer( ) );
 118 }
 119
 120 int Producer::set_speed( double speed )
 121 {
 122         return mlt_producer_set_speed( get_producer( ), speed );
 123 }
 124
 125 double Producer::get_speed( )
 126 {
 127         return mlt_producer_get_speed( get_producer( ) );
 128 }
 129
 130 double Producer::get_fps( )
 131 {
 132         return mlt_producer_get_fps( get_producer( ) );
 133 }
 134
 135 int Producer::set_in_and_out( int in, int out )
 136 {
 137         return mlt_producer_set_in_and_out( get_producer( ), in, out );
 138 }
 139
 140 int Producer::get_in( )
 141 {
 142         return mlt_producer_get_in( get_producer( ) );
 143 }
 144
 145 int Producer::get_out( )
 146 {
 147         return mlt_producer_get_out( get_producer( ) );
 148 }
 149
 150 int Producer::get_length( )
 151 {
 152         return mlt_producer_get_length( get_producer( ) );
 153 }
 154
 155 int Producer::get_playtime( )
 156 {
 157         return mlt_producer_get_playtime( get_producer( ) );
 158 }
 159
 160 Producer *Producer::cut( int in, int out )
 161 {
 162         mlt_producer producer = mlt_producer_cut( get_producer( ), in, out );
 163         Producer *result = new Producer( producer );
 164         mlt_producer_close( producer );
 165         return result;
 166 }
 167
 168 bool Producer::is_cut( )
 169 {
 170         return mlt_producer_is_cut( get_producer( ) );
 171 }
 172
 173 bool Producer::is_blank( )
 174 {
 175         return mlt_producer_is_blank( get_producer( ) );
 176 }
 177
 178 bool Producer::same_clip( Producer &that )
 179 {
 180         return mlt_producer_cut_parent( get_producer( ) ) == mlt_producer_cut_parent( that.get_producer( ) );
 181 }
 182
 183 bool Producer::runs_into( Producer &that )
 184 {
 185         return same_clip( that ) && get_out( ) == ( that.get_in( ) - 1 );
 186 }
 187
 188 void Producer::optimise( )
 189 {
 190         mlt_producer_optimise( get_producer( ) );
 191 }