2 * consumer_westley.c -- a libxml2 serialiser of mlt service networks
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Dan Dennedy <dan@dennedy.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
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.
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.
21 #include "consumer_westley.h"
22 #include <framework/mlt.h>
27 #include <libxml/tree.h>
31 /** Forward references to static functions.
34 static int consumer_start( mlt_consumer parent
);
36 /** This is what will be called by the factory - anything can be passed in
37 via the argument, but keep it simple.
40 mlt_consumer
consumer_westley_init( char *arg
)
42 // Create the consumer object
43 mlt_consumer
this = calloc( sizeof( struct mlt_consumer_s
), 1 );
45 // If no malloc'd and consumer init ok
46 if ( this != NULL
&& mlt_consumer_init( this, NULL
) == 0 )
48 // We have stuff to clean up, so override the close method
49 //parent->close = consumer_close;
51 // Allow thread to be started/stopped
52 this->start
= consumer_start
;
54 mlt_properties_set( mlt_consumer_properties( this ), "resource", arg
);
56 // Return the consumer produced
60 // malloc or consumer init failed
68 // This maintains counters for adding ids to elements
69 struct serialise_context_s
78 mlt_properties producer_map
;
80 typedef struct serialise_context_s
* serialise_context
;
83 static inline void serialise_properties( mlt_properties properties
, xmlNode
*node
)
88 // Enumerate the properties
89 for ( i
= 0; i
< mlt_properties_count( properties
); i
++ )
91 if ( mlt_properties_get_value( properties
, i
) != NULL
&&
92 strcmp( mlt_properties_get_name( properties
, i
), "westley" ) != 0 )
95 p
= xmlNewChild( node
, NULL
, "prop", NULL
);
99 xmlNewProp( p
, mlt_properties_get_name( properties
, i
), mlt_properties_get_value( properties
, i
) );
104 static void serialise_service( serialise_context context
, mlt_service service
, xmlNode
*node
)
107 xmlNode
*child
= node
;
108 char id
[ ID_SIZE
+ 1 ];
110 id
[ ID_SIZE
] = '\0';
113 // Iterate over consumer/producer connections
114 while ( service
!= NULL
)
116 mlt_properties properties
= mlt_service_properties( service
);
117 char *mlt_type
= mlt_properties_get( properties
, "mlt_type" );
119 // Tell about the producer
120 if ( strcmp( mlt_type
, "producer" ) == 0 )
122 if ( context
->pass
== 0 )
124 child
= xmlNewChild( node
, NULL
, "producer", NULL
);
127 if ( mlt_properties_get( properties
, "id" ) == NULL
)
129 snprintf( id
, ID_SIZE
, "producer%d", context
->producer_count
++ );
130 xmlNewProp( child
, "id", id
);
133 strncpy( id
, mlt_properties_get( properties
, "id" ), ID_SIZE
);
134 serialise_properties( properties
, child
);
136 // Add producer to the map
137 snprintf( key
, 10, "%p", service
);
138 mlt_properties_set( context
->producer_map
, key
, id
);
142 snprintf( key
, 10, "%p", service
);
143 xmlNewProp( node
, "producer", mlt_properties_get( context
->producer_map
, key
) );
145 if ( mlt_properties_get( properties
, "westley" ) != NULL
)
149 // Tell about the framework container producers
150 else if ( strcmp( mlt_type
, "mlt_producer" ) == 0 )
152 // Recurse on multitrack's tracks
153 if ( strcmp( mlt_properties_get( properties
, "resource" ), "<multitrack>" ) == 0 )
155 if ( context
->pass
== 0 )
157 // Iterate over the tracks
158 for ( i
= 0; i
< mlt_multitrack_count( MLT_MULTITRACK( service
) ); i
++ )
160 serialise_service( context
, MLT_SERVICE( mlt_multitrack_track( MLT_MULTITRACK( service
), i
) ), node
);
165 // Iterate over the tracks to collect the producers
166 for ( i
= 0; i
< mlt_multitrack_count( MLT_MULTITRACK( service
) ); i
++ )
168 serialise_service( context
, MLT_SERVICE( mlt_multitrack_track( MLT_MULTITRACK( service
), i
) ), node
);
171 child
= xmlNewChild( node
, NULL
, "multitrack", NULL
);
174 if ( mlt_properties_get( properties
, "id" ) == NULL
)
176 snprintf( id
, ID_SIZE
, "multitrack%d", context
->multitrack_count
++ );
177 xmlNewProp( child
, "id", id
);
180 // Iterate over the tracks
181 for ( i
= 0; i
< mlt_multitrack_count( MLT_MULTITRACK( service
) ); i
++ )
183 xmlNode
*track
= xmlNewChild( child
, NULL
, "track", NULL
);
184 snprintf( key
, 10, "%p", MLT_SERVICE( mlt_multitrack_track( MLT_MULTITRACK( service
), i
) ) );
185 xmlNewProp( track
, "producer", mlt_properties_get( context
->producer_map
, key
) );
191 // Recurse on playlist's clips
192 else if ( strcmp( mlt_properties_get( properties
, "resource" ), "<playlist>" ) == 0 )
194 mlt_playlist_clip_info info
;
196 if ( context
->pass
== 0 )
198 // Iterate over the playlist entries to collect the producers
199 for ( i
= 0; i
< mlt_playlist_count( MLT_PLAYLIST( service
) ); i
++ )
201 if ( ! mlt_playlist_get_clip_info( MLT_PLAYLIST( service
), &info
, i
) )
203 if ( strcmp( mlt_properties_get( mlt_producer_properties( info
.producer
), "mlt_service" ), "blank" ) != 0 )
205 serialise_service( context
, MLT_SERVICE( info
.producer
), node
);
210 child
= xmlNewChild( node
, NULL
, "playlist", NULL
);
213 if ( mlt_properties_get( properties
, "id" ) == NULL
)
215 snprintf( id
, ID_SIZE
, "playlist%d", context
->playlist_count
++ );
216 xmlNewProp( child
, "id", id
);
219 strncpy( id
, mlt_properties_get( properties
, "id" ), ID_SIZE
);
221 xmlNewProp( child
, "in", mlt_properties_get( properties
, "in" ) );
222 xmlNewProp( child
, "out", mlt_properties_get( properties
, "out" ) );
224 // Add producer to the map
225 snprintf( key
, 10, "%p", service
);
226 mlt_properties_set( context
->producer_map
, key
, id
);
228 // Iterate over the playlist entries
229 for ( i
= 0; i
< mlt_playlist_count( MLT_PLAYLIST( service
) ); i
++ )
231 if ( ! mlt_playlist_get_clip_info( MLT_PLAYLIST( service
), &info
, i
) )
233 if ( strcmp( mlt_properties_get( mlt_producer_properties( info
.producer
), "mlt_service" ), "blank" ) == 0 )
237 xmlNode
*entry
= xmlNewChild( child
, NULL
, "blank", NULL
);
238 snprintf( length
, 19, "%lld", info
.frame_count
);
239 xmlNewProp( entry
, "length", length
);
243 xmlNode
*entry
= xmlNewChild( child
, NULL
, "entry", NULL
);
244 snprintf( key
, 10, "%p", MLT_SERVICE( info
.producer
) );
245 xmlNewProp( entry
, "producer", mlt_properties_get( context
->producer_map
, key
) );
250 else if ( strcmp( (const char*) node
->name
, "tractor" ) != 0 )
252 snprintf( key
, 10, "%p", service
);
253 xmlNewProp( node
, "producer", mlt_properties_get( context
->producer_map
, key
) );
257 // Recurse on tractor's producer
258 else if ( strcmp( mlt_properties_get( properties
, "resource" ), "<tractor>" ) == 0 )
260 if ( context
->pass
== 0 )
262 // Recurse on connected producer
263 serialise_service( context
, mlt_service_get_producer( service
), node
);
267 child
= xmlNewChild( node
, NULL
, "tractor", NULL
);
270 if ( mlt_properties_get( properties
, "id" ) == NULL
)
272 snprintf( id
, ID_SIZE
, "tractor%d", context
->tractor_count
++ );
273 xmlNewProp( child
, "id", id
);
276 xmlNewProp( child
, "in", mlt_properties_get( properties
, "in" ) );
277 xmlNewProp( child
, "out", mlt_properties_get( properties
, "out" ) );
279 // Recurse on connected producer
280 serialise_service( context
, mlt_service_get_producer( service
), child
);
286 // Tell about a filter
287 else if ( strcmp( mlt_type
, "filter" ) == 0 )
289 // Recurse on connected producer
290 serialise_service( context
, MLT_SERVICE( MLT_FILTER( service
)->producer
), node
);
292 if ( context
->pass
== 1 )
294 child
= xmlNewChild( node
, NULL
, "filter", NULL
);
297 if ( mlt_properties_get( properties
, "id" ) == NULL
)
299 snprintf( id
, ID_SIZE
, "filter%d", context
->filter_count
++ );
300 xmlNewProp( child
, "id", id
);
303 serialise_properties( properties
, child
);
308 // Tell about a transition
309 else if ( strcmp( mlt_type
, "transition" ) == 0 )
311 // Recurse on connected producer
312 serialise_service( context
, MLT_SERVICE( MLT_TRANSITION( service
)->producer
), node
);
314 if ( context
->pass
== 1 )
316 child
= xmlNewChild( node
, NULL
, "transition", NULL
);
319 if ( mlt_properties_get( properties
, "id" ) == NULL
)
321 snprintf( id
, ID_SIZE
, "transition%d", context
->transition_count
++ );
322 xmlNewProp( child
, "id", id
);
325 serialise_properties( properties
, child
);
330 // Get the next connected service
331 service
= mlt_service_get_producer( service
);
335 static int consumer_start( mlt_consumer
this )
337 mlt_service inigo
= NULL
;
338 xmlDoc
*doc
= xmlNewDoc( "1.0" );
339 xmlNode
*root
= xmlNewNode( NULL
, "westley" );
340 xmlDocSetRootElement( doc
, root
);
342 // Get the producer service
343 mlt_service service
= mlt_service_get_producer( mlt_consumer_service( this ) );
344 if ( service
!= NULL
)
346 struct serialise_context_s
*context
= calloc( 1, sizeof( struct serialise_context_s
) );
347 context
->producer_map
= mlt_properties_new();
350 if ( mlt_properties_get( mlt_service_properties( service
), "mlt_service" ) != NULL
&&
351 strcmp( mlt_properties_get( mlt_service_properties( service
), "mlt_service" ), "inigo" ) == 0 )
354 // Ensure producer is a framework producer
355 mlt_properties_set( mlt_service_properties( service
), "mlt_type", "mlt_producer" );
357 // In pass one, we serialise the end producers and playlists,
358 // adding them to a map keyed by address.
359 serialise_service( context
, service
, root
);
361 // In pass two, we serialise the tractor and reference the
362 // producers and playlists
364 serialise_service( context
, service
, root
);
366 mlt_properties_close( context
->producer_map
);
369 if ( mlt_properties_get( mlt_consumer_properties( this ), "resource" ) == NULL
)
370 xmlDocFormatDump( stdout
, doc
, 1 );
372 xmlSaveFormatFile( mlt_properties_get( mlt_consumer_properties( this ), "resource" ), doc
, 1 );
376 mlt_consumer_stop( this );
378 // Tell inigo, enough already!
380 mlt_properties_set_int( mlt_service_properties( inigo
), "done", 1 );