2 * mlt_parser.c -- service parsing functionality
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 static int on_invalid( mlt_parser
this, mlt_service object
)
29 static int on_unknown( mlt_parser
this, mlt_service object
)
34 static int on_start_producer( mlt_parser
this, mlt_producer object
)
39 static int on_end_producer( mlt_parser
this, mlt_producer object
)
44 static int on_start_playlist( mlt_parser
this, mlt_playlist object
)
49 static int on_end_playlist( mlt_parser
this, mlt_playlist object
)
54 static int on_start_tractor( mlt_parser
this, mlt_tractor object
)
59 static int on_end_tractor( mlt_parser
this, mlt_tractor object
)
64 static int on_start_multitrack( mlt_parser
this, mlt_multitrack object
)
69 static int on_end_multitrack( mlt_parser
this, mlt_multitrack object
)
74 static int on_start_track( mlt_parser
this )
79 static int on_end_track( mlt_parser
this )
84 static int on_start_filter( mlt_parser
this, mlt_filter object
)
89 static int on_end_filter( mlt_parser
this, mlt_filter object
)
94 static int on_start_transition( mlt_parser
this, mlt_transition object
)
99 static int on_end_transition( mlt_parser
this, mlt_transition object
)
104 mlt_parser
mlt_parser_new( )
106 mlt_parser
this = calloc( 1, sizeof( struct mlt_parser_s
) );
107 if ( this != NULL
&& mlt_properties_init( &this->parent
, this ) == 0 )
109 this->on_invalid
= on_invalid
;
110 this->on_unknown
= on_unknown
;
111 this->on_start_producer
= on_start_producer
;
112 this->on_end_producer
= on_end_producer
;
113 this->on_start_playlist
= on_start_playlist
;
114 this->on_end_playlist
= on_end_playlist
;
115 this->on_start_tractor
= on_start_tractor
;
116 this->on_end_tractor
= on_end_tractor
;
117 this->on_start_multitrack
= on_start_multitrack
;
118 this->on_end_multitrack
= on_end_multitrack
;
119 this->on_start_track
= on_start_track
;
120 this->on_end_track
= on_end_track
;
121 this->on_start_filter
= on_start_filter
;
122 this->on_end_filter
= on_end_filter
;
123 this->on_start_transition
= on_start_transition
;
124 this->on_end_transition
= on_end_transition
;
129 mlt_properties
mlt_parser_properties( mlt_parser
this )
131 return &this->parent
;
134 int mlt_parser_start( mlt_parser
this, mlt_service object
)
137 mlt_service_type type
= mlt_service_identify( object
);
141 error
= this->on_invalid( this, object
);
144 error
= this->on_unknown( this, object
);
147 if ( mlt_producer_is_cut( ( mlt_producer
)object
) )
148 error
= mlt_parser_start( this, ( mlt_service
)mlt_producer_cut_parent( ( mlt_producer
)object
) );
149 error
= this->on_start_producer( this, ( mlt_producer
)object
);
153 while ( error
== 0 && mlt_producer_filter( ( mlt_producer
)object
, i
) != NULL
)
154 error
= mlt_parser_start( this, ( mlt_service
)mlt_producer_filter( ( mlt_producer
)object
, i
++ ) );
156 error
= this->on_end_producer( this, ( mlt_producer
)object
);
159 error
= this->on_start_playlist( this, ( mlt_playlist
)object
);
163 while ( error
== 0 && i
< mlt_playlist_count( ( mlt_playlist
)object
) )
164 mlt_parser_start( this, ( mlt_service
)mlt_playlist_get_clip( ( mlt_playlist
)object
, i
++ ) );
166 while ( error
== 0 && mlt_producer_filter( ( mlt_producer
)object
, i
) != NULL
)
167 error
= mlt_parser_start( this, ( mlt_service
)mlt_producer_filter( ( mlt_producer
)object
, i
++ ) );
169 error
= this->on_end_playlist( this, ( mlt_playlist
)object
);
172 error
= this->on_start_tractor( this, ( mlt_tractor
)object
);
176 mlt_service next
= mlt_service_producer( object
);
177 mlt_parser_start( this, ( mlt_service
)mlt_tractor_multitrack( ( mlt_tractor
)object
) );
178 while ( next
!= ( mlt_service
)mlt_tractor_multitrack( ( mlt_tractor
)object
) )
180 mlt_parser_start( this, next
);
181 next
= mlt_service_producer( next
);
183 while ( error
== 0 && mlt_producer_filter( ( mlt_producer
)object
, i
) != NULL
)
184 error
= mlt_parser_start( this, ( mlt_service
)mlt_producer_filter( ( mlt_producer
)object
, i
++ ) );
186 error
= this->on_end_tractor( this, ( mlt_tractor
)object
);
188 case multitrack_type
:
189 error
= this->on_start_multitrack( this, ( mlt_multitrack
)object
);
193 while ( i
< mlt_multitrack_count( ( mlt_multitrack
)object
) )
195 this->on_start_track( this );
196 mlt_parser_start( this, ( mlt_service
)mlt_multitrack_track( ( mlt_multitrack
)object
, i
++ ) );
197 this->on_end_track( this );
200 while ( error
== 0 && mlt_producer_filter( ( mlt_producer
)object
, i
) != NULL
)
201 error
= mlt_parser_start( this, ( mlt_service
)mlt_producer_filter( ( mlt_producer
)object
, i
++ ) );
203 error
= this->on_end_multitrack( this, ( mlt_multitrack
)object
);
206 error
= this->on_start_filter( this, ( mlt_filter
)object
);
210 while ( error
== 0 && mlt_producer_filter( ( mlt_producer
)object
, i
) != NULL
)
211 error
= mlt_parser_start( this, ( mlt_service
)mlt_producer_filter( ( mlt_producer
)object
, i
++ ) );
213 error
= this->on_end_filter( this, ( mlt_filter
)object
);
215 case transition_type
:
216 error
= this->on_start_transition( this, ( mlt_transition
)object
);
220 while ( error
== 0 && mlt_producer_filter( ( mlt_producer
)object
, i
) != NULL
)
221 error
= mlt_parser_start( this, ( mlt_service
)mlt_producer_filter( ( mlt_producer
)object
, i
++ ) );
223 error
= this->on_end_transition( this, ( mlt_transition
)object
);
233 void mlt_parser_close( mlt_parser
this )
237 mlt_properties_close( &this->parent
);