3 * \brief service parsing functionality
5 * Copyright (C) 2003-2008 Ushodaya Enterprises Limited
6 * \author Charles Yates <charles.yates@pandora.be>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 static int on_invalid( mlt_parser this, mlt_service object )
31 static int on_unknown( mlt_parser this, mlt_service object )
36 static int on_start_producer( mlt_parser this, mlt_producer object )
41 static int on_end_producer( mlt_parser this, mlt_producer object )
46 static int on_start_playlist( mlt_parser this, mlt_playlist object )
51 static int on_end_playlist( mlt_parser this, mlt_playlist object )
56 static int on_start_tractor( mlt_parser this, mlt_tractor object )
61 static int on_end_tractor( mlt_parser this, mlt_tractor object )
66 static int on_start_multitrack( mlt_parser this, mlt_multitrack object )
71 static int on_end_multitrack( mlt_parser this, mlt_multitrack object )
76 static int on_start_track( mlt_parser this )
81 static int on_end_track( mlt_parser this )
86 static int on_start_filter( mlt_parser this, mlt_filter object )
91 static int on_end_filter( mlt_parser this, mlt_filter object )
96 static int on_start_transition( mlt_parser this, mlt_transition object )
101 static int on_end_transition( mlt_parser this, mlt_transition object )
106 mlt_parser mlt_parser_new( )
108 mlt_parser this = calloc( 1, sizeof( struct mlt_parser_s ) );
109 if ( this != NULL && mlt_properties_init( &this->parent, this ) == 0 )
111 this->on_invalid = on_invalid;
112 this->on_unknown = on_unknown;
113 this->on_start_producer = on_start_producer;
114 this->on_end_producer = on_end_producer;
115 this->on_start_playlist = on_start_playlist;
116 this->on_end_playlist = on_end_playlist;
117 this->on_start_tractor = on_start_tractor;
118 this->on_end_tractor = on_end_tractor;
119 this->on_start_multitrack = on_start_multitrack;
120 this->on_end_multitrack = on_end_multitrack;
121 this->on_start_track = on_start_track;
122 this->on_end_track = on_end_track;
123 this->on_start_filter = on_start_filter;
124 this->on_end_filter = on_end_filter;
125 this->on_start_transition = on_start_transition;
126 this->on_end_transition = on_end_transition;
131 mlt_properties mlt_parser_properties( mlt_parser this )
133 return &this->parent;
136 int mlt_parser_start( mlt_parser this, mlt_service object )
139 mlt_service_type type = mlt_service_identify( object );
143 error = this->on_invalid( this, object );
146 error = this->on_unknown( this, object );
149 if ( mlt_producer_is_cut( ( mlt_producer )object ) )
150 error = mlt_parser_start( this, ( mlt_service )mlt_producer_cut_parent( ( mlt_producer )object ) );
151 error = this->on_start_producer( this, ( mlt_producer )object );
155 while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
156 error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
158 error = this->on_end_producer( this, ( mlt_producer )object );
161 error = this->on_start_playlist( this, ( mlt_playlist )object );
165 while ( error == 0 && i < mlt_playlist_count( ( mlt_playlist )object ) )
166 mlt_parser_start( this, ( mlt_service )mlt_playlist_get_clip( ( mlt_playlist )object, i ++ ) );
168 while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
169 error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
171 error = this->on_end_playlist( this, ( mlt_playlist )object );
174 error = this->on_start_tractor( this, ( mlt_tractor )object );
178 mlt_service next = mlt_service_producer( object );
179 mlt_parser_start( this, ( mlt_service )mlt_tractor_multitrack( ( mlt_tractor )object ) );
180 while ( next != ( mlt_service )mlt_tractor_multitrack( ( mlt_tractor )object ) )
182 mlt_parser_start( this, next );
183 next = mlt_service_producer( next );
185 while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
186 error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
188 error = this->on_end_tractor( this, ( mlt_tractor )object );
190 case multitrack_type:
191 error = this->on_start_multitrack( this, ( mlt_multitrack )object );
195 while ( i < mlt_multitrack_count( ( mlt_multitrack )object ) )
197 this->on_start_track( this );
198 mlt_parser_start( this, ( mlt_service )mlt_multitrack_track( ( mlt_multitrack )object , i ++ ) );
199 this->on_end_track( this );
202 while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
203 error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
205 error = this->on_end_multitrack( this, ( mlt_multitrack )object );
208 error = this->on_start_filter( this, ( mlt_filter )object );
212 while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
213 error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
215 error = this->on_end_filter( this, ( mlt_filter )object );
217 case transition_type:
218 error = this->on_start_transition( this, ( mlt_transition )object );
222 while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
223 error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
225 error = this->on_end_transition( this, ( mlt_transition )object );
235 void mlt_parser_close( mlt_parser this )
239 mlt_properties_close( &this->parent );