2 * producer_westley.c -- a libxml2 parser 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 // TODO: destroy unreferenced producers (they are currently destroyed
22 // when the returned producer is closed).
23 // TODO: try using XmlReader interface to avoid global context issues in sax.
25 #include "producer_westley.h"
26 #include <framework/mlt.h>
31 #include <libxml/parser.h>
33 #define STACK_SIZE 1000
35 struct deserialise_context_s
37 mlt_service stack_service
[ STACK_SIZE
];
38 int stack_service_size
;
39 mlt_properties producer_map
;
40 mlt_properties destructors
;
42 mlt_properties producer_properties
;
44 typedef struct deserialise_context_s
*deserialise_context
;
50 static int context_push_service( deserialise_context
this, mlt_service that
)
52 int ret
= this->stack_service_size
>= STACK_SIZE
;
54 this->stack_service
[ this->stack_service_size
++ ] = that
;
61 static mlt_service
context_pop_service( deserialise_context
this )
63 mlt_service result
= NULL
;
64 if ( this->stack_service_size
> 0 )
65 result
= this->stack_service
[ -- this->stack_service_size
];
69 // Set the destructor on a new service
70 static void track_service( mlt_properties properties
, void *service
, mlt_destructor destructor
)
72 int registered
= mlt_properties_get_int( properties
, "registered" );
73 char *key
= mlt_properties_get( properties
, "registered" );
74 mlt_properties_set_data( properties
, key
, service
, 0, destructor
, NULL
);
75 mlt_properties_set_int( properties
, "registered", ++ registered
);
78 static void on_start_tractor( deserialise_context context
, const xmlChar
*name
, const xmlChar
**atts
)
80 mlt_service service
= mlt_tractor_service( mlt_tractor_init() );
81 mlt_properties properties
= mlt_service_properties( service
);
83 track_service( context
->destructors
, service
, (mlt_destructor
) mlt_tractor_close
);
85 mlt_properties_set_position( properties
, "length", 0 );
87 for ( ; atts
!= NULL
&& *atts
!= NULL
; atts
+= 2 )
88 mlt_properties_set( mlt_service_properties( service
), (char*) atts
[0], (char*) atts
[1] );
90 if ( mlt_properties_get_position( properties
, "length" ) < mlt_properties_get_position( properties
, "out" ) )
92 mlt_position length
= mlt_properties_get_position( properties
, "out" ) + 1;
93 mlt_properties_set_position( properties
, "length", length
);
96 context_push_service( context
, service
);
99 static void on_start_multitrack( deserialise_context context
, const xmlChar
*name
, const xmlChar
**atts
)
101 mlt_service service
= mlt_multitrack_service( mlt_multitrack_init() );
102 mlt_properties properties
= mlt_service_properties( service
);
104 track_service( context
->destructors
, service
, (mlt_destructor
) mlt_multitrack_close
);
106 mlt_properties_set_position( properties
, "length", 0 );
108 for ( ; atts
!= NULL
&& *atts
!= NULL
; atts
+= 2 )
109 mlt_properties_set( properties
, (char*) atts
[0], (char*) atts
[1] );
111 context_push_service( context
, service
);
114 static void on_start_playlist( deserialise_context context
, const xmlChar
*name
, const xmlChar
**atts
)
116 mlt_service service
= mlt_playlist_service( mlt_playlist_init() );
117 mlt_properties properties
= mlt_service_properties( service
);
119 track_service( context
->destructors
, service
, (mlt_destructor
) mlt_playlist_close
);
121 mlt_properties_set_position( properties
, "length", 0 );
123 for ( ; atts
!= NULL
&& *atts
!= NULL
; atts
+= 2 )
125 mlt_properties_set( properties
, ( char* )atts
[0], ( char* )atts
[1] );
127 // Out will be overwritten later as we append, so we need to save it
128 if ( strcmp( atts
[ 0 ], "out" ) == 0 )
129 mlt_properties_set( properties
, "_westley.out", ( char* )atts
[ 1 ] );
132 if ( mlt_properties_get( properties
, "id" ) != NULL
)
133 mlt_properties_set_data( context
->producer_map
, mlt_properties_get( properties
, "id" ), service
, 0, NULL
, NULL
);
135 context_push_service( context
, service
);
138 static void on_start_producer( deserialise_context context
, const xmlChar
*name
, const xmlChar
**atts
)
140 mlt_properties properties
= context
->producer_properties
= mlt_properties_new();
142 for ( ; atts
!= NULL
&& *atts
!= NULL
; atts
+= 2 )
144 mlt_properties_set( properties
, (char*) atts
[0], (char*) atts
[1] );
148 static void on_start_blank( deserialise_context context
, const xmlChar
*name
, const xmlChar
**atts
)
150 // Get the playlist from the stack
151 mlt_service service
= context_pop_service( context
);
152 mlt_position length
= 0;
154 // Look for the length attribute
155 for ( ; atts
!= NULL
&& *atts
!= NULL
; atts
+= 2 )
157 if ( strcmp( atts
[0], "length" ) == 0 )
159 length
= atoll( atts
[1] );
164 // Append a blank to the playlist
165 mlt_playlist_blank( MLT_PLAYLIST( service
), length
- 1 );
167 // Push the playlist back onto the stack
168 context_push_service( context
, service
);
171 static void on_start_entry_track( deserialise_context context
, const xmlChar
*name
, const xmlChar
**atts
)
173 // Use a dummy service to hold properties to allow arbitratry nesting
174 mlt_service service
= calloc( 1, sizeof( struct mlt_service_s
) );
175 mlt_service_init( service
, NULL
);
177 // Push the dummy service onto the stack
178 context_push_service( context
, service
);
180 for ( ; atts
!= NULL
&& *atts
!= NULL
; atts
+= 2 )
182 mlt_properties_set( mlt_service_properties( service
), (char*) atts
[0], (char*) atts
[1] );
184 // Look for the producer attribute
185 if ( strcmp( atts
[ 0 ], "producer" ) == 0 )
187 if ( mlt_properties_get_data( context
->producer_map
, (char*) atts
[1], NULL
) != NULL
)
188 // Push the referenced producer onto the stack
189 context_push_service( context
, MLT_SERVICE( mlt_properties_get_data( context
->producer_map
, (char*) atts
[1], NULL
) ) );
194 static void on_start_filter( deserialise_context context
, const xmlChar
*name
, const xmlChar
**atts
)
196 mlt_properties properties
= context
->producer_properties
= mlt_properties_new();
198 // Set the properties
199 for ( ; atts
!= NULL
&& *atts
!= NULL
; atts
+= 2 )
200 mlt_properties_set( properties
, (char*) atts
[0], (char*) atts
[1] );
203 static void on_start_transition( deserialise_context context
, const xmlChar
*name
, const xmlChar
**atts
)
205 mlt_properties properties
= context
->producer_properties
= mlt_properties_new();
207 // Set the properties
208 for ( ; atts
!= NULL
&& *atts
!= NULL
; atts
+= 2 )
209 mlt_properties_set( properties
, (char*) atts
[0], (char*) atts
[1] );
212 static void on_start_property( deserialise_context context
, const xmlChar
*name
, const xmlChar
**atts
)
214 mlt_properties properties
= context
->producer_properties
;
217 if ( properties
== NULL
)
220 // Set the properties
221 for ( ; atts
!= NULL
&& *atts
!= NULL
; atts
+= 2 )
223 if ( strcmp( atts
[ 0 ], "name" ) == 0 )
225 context
->property
= strdup( atts
[ 1 ] );
227 else if ( strcmp( atts
[ 0 ], "value" ) == 0 )
229 value
= (char*) atts
[ 1 ];
233 if ( context
->property
!= NULL
&& value
!= NULL
)
234 mlt_properties_set( properties
, context
->property
, value
);
237 static void on_end_multitrack( deserialise_context context
, const xmlChar
*name
)
239 // Get the producer (multitrack) from the stack
240 mlt_service producer
= context_pop_service( context
);
242 // Get the tractor from the stack
243 mlt_service service
= context_pop_service( context
);
245 // Connect the tractor to the producer
246 mlt_tractor_connect( MLT_TRACTOR( service
), producer
);
247 mlt_properties_set_data( mlt_service_properties( service
), "multitrack",
248 MLT_MULTITRACK( producer
), 0, NULL
, NULL
);
250 // Push the tractor back onto the stack
251 context_push_service( context
, service
);
253 // Push the producer back onto the stack
254 context_push_service( context
, producer
);
257 static void on_end_playlist( deserialise_context context
, const xmlChar
*name
)
259 // Get the playlist from the stack
260 mlt_service service
= context_pop_service( context
);
261 mlt_properties properties
= mlt_service_properties( service
);
263 mlt_position in
= mlt_properties_get_position( properties
, "in" );
266 if ( mlt_properties_get( properties
, "_westley.out" ) != NULL
)
267 out
= mlt_properties_get_position( properties
, "_westley.out" );
269 out
= mlt_properties_get_position( properties
, "length" ) - 1;
271 if ( mlt_properties_get_position( properties
, "length" ) < out
)
272 mlt_properties_set_position( properties
, "length", out
+ 1 );
274 mlt_producer_set_in_and_out( MLT_PRODUCER( service
), in
, out
);
276 // Push the playlist back onto the stack
277 context_push_service( context
, service
);
280 static void on_end_track( deserialise_context context
, const xmlChar
*name
)
282 // Get the producer from the stack
283 mlt_service producer
= context_pop_service( context
);
285 // Get the dummy track service from the stack
286 mlt_service track
= context_pop_service( context
);
288 // Get the multitrack from the stack
289 mlt_service service
= context_pop_service( context
);
291 // Set the track on the multitrack
292 mlt_multitrack_connect( MLT_MULTITRACK( service
),
293 MLT_PRODUCER( producer
),
294 mlt_multitrack_count( MLT_MULTITRACK( service
) ) );
296 // Set producer i/o if specified
297 if ( mlt_properties_get( mlt_service_properties( track
), "in" ) != NULL
||
298 mlt_properties_get( mlt_service_properties( track
), "out" ) != NULL
)
300 mlt_producer_set_in_and_out( MLT_PRODUCER( producer
),
301 mlt_properties_get_position( mlt_service_properties( track
), "in" ),
302 mlt_properties_get_position( mlt_service_properties( track
), "out" ) );
305 // Push the multitrack back onto the stack
306 context_push_service( context
, service
);
308 mlt_service_close( track
);
311 static void on_end_entry( deserialise_context context
, const xmlChar
*name
)
313 // Get the producer from the stack
314 mlt_service producer
= context_pop_service( context
);
316 // Get the dummy entry service from the stack
317 mlt_service entry
= context_pop_service( context
);
319 // Get the playlist from the stack
320 mlt_service service
= context_pop_service( context
);
322 // Append the producer to the playlist
323 if ( mlt_properties_get( mlt_service_properties( entry
), "in" ) != NULL
||
324 mlt_properties_get( mlt_service_properties( entry
), "out" ) != NULL
)
326 mlt_playlist_append_io( MLT_PLAYLIST( service
),
327 MLT_PRODUCER( producer
),
328 mlt_properties_get_position( mlt_service_properties( entry
), "in" ),
329 mlt_properties_get_position( mlt_service_properties( entry
), "out" ) );
333 mlt_playlist_append( MLT_PLAYLIST( service
), MLT_PRODUCER( producer
) );
336 // Push the playlist back onto the stack
337 context_push_service( context
, service
);
339 mlt_service_close( entry
);
342 static void on_end_tractor( deserialise_context context
, const xmlChar
*name
)
344 // Get and discard the last producer
345 mlt_producer multitrack
= MLT_PRODUCER( context_pop_service( context
) );
348 mlt_service tractor
= context_pop_service( context
);
349 multitrack
= mlt_properties_get_data( mlt_service_properties( tractor
), "multitrack", NULL
);
351 // Inherit the producer's properties
352 mlt_properties properties
= mlt_producer_properties( multitrack
);
353 mlt_properties_set_position( properties
, "length", mlt_producer_get_out( multitrack
) + 1 );
354 mlt_producer_set_in_and_out( multitrack
, 0, mlt_producer_get_out( multitrack
) );
355 mlt_properties_set_double( properties
, "fps", mlt_producer_get_fps( multitrack
) );
357 // Push the playlist back onto the stack
358 context_push_service( context
, tractor
);
361 static void on_end_property( deserialise_context context
, const xmlChar
*name
)
363 // Close this property handling
364 free( context
->property
);
365 context
->property
= NULL
;
368 static void on_end_producer( deserialise_context context
, const xmlChar
*name
)
370 mlt_properties properties
= context
->producer_properties
;
371 mlt_service service
= NULL
;
373 if ( properties
== NULL
)
376 // Instantiate the producer
377 if ( mlt_properties_get( properties
, "mlt_service" ) != NULL
)
379 service
= MLT_SERVICE( mlt_factory_producer( "fezzik", mlt_properties_get( properties
, "mlt_service" ) ) );
381 if ( service
== NULL
&& mlt_properties_get( properties
, "resource" ) != NULL
)
383 char *root
= mlt_properties_get( context
->producer_map
, "_root" );
384 char *resource
= mlt_properties_get( properties
, "resource" );
385 char *full_resource
= malloc( strlen( root
) + strlen( resource
) + 1 );
386 if ( resource
[ 0 ] != '/' )
388 strcpy( full_resource
, root
);
389 strcat( full_resource
, resource
);
393 strcpy( full_resource
, resource
);
395 service
= MLT_SERVICE( mlt_factory_producer( "fezzik", full_resource
) );
396 free( full_resource
);
399 track_service( context
->destructors
, service
, (mlt_destructor
) mlt_producer_close
);
401 // Add the producer to the producer map
402 if ( mlt_properties_get( properties
, "id" ) != NULL
)
403 mlt_properties_set_data( context
->producer_map
, mlt_properties_get( properties
, "id" ), service
, 0, NULL
, NULL
);
405 mlt_properties_inherit( mlt_service_properties( service
), properties
);
406 mlt_properties_close( properties
);
407 context
->producer_properties
= NULL
;
408 properties
= mlt_service_properties( service
);
411 mlt_producer_set_in_and_out( MLT_PRODUCER( service
),
412 mlt_properties_get_position( properties
, "in" ),
413 mlt_properties_get_position( properties
, "out" ) );
415 // Push the new producer onto the stack
416 context_push_service( context
, service
);
419 static void on_end_filter( deserialise_context context
, const xmlChar
*name
)
421 mlt_properties properties
= context
->producer_properties
;
422 if ( properties
== NULL
)
429 // Get the producer from the stack
430 mlt_service producer
= context_pop_service( context
);
431 //fprintf( stderr, "connecting filter to %s\n", mlt_properties_get( mlt_service_properties( producer ), "resource" ) );
434 mlt_service service
= MLT_SERVICE( mlt_factory_filter( mlt_properties_get( properties
, "mlt_service" ), NULL
) );
436 track_service( context
->destructors
, service
, (mlt_destructor
) mlt_filter_close
);
438 // Connect the filter to the producer
439 mlt_filter_connect( MLT_FILTER( service
), producer
,
440 mlt_properties_get_int( properties
, "track" ) );
442 // Set in and out from producer if non existant
443 if ( mlt_properties_get( properties
, "in" ) == NULL
)
444 mlt_properties_set_position( properties
, "in", mlt_producer_get_in( MLT_PRODUCER( producer
) ) );
445 if ( mlt_properties_get( properties
, "out" ) == NULL
)
446 mlt_properties_set_position( properties
, "out", mlt_producer_get_out( MLT_PRODUCER( producer
) ) );
448 // Propogate the properties
449 mlt_properties_inherit( mlt_service_properties( service
), properties
);
450 mlt_properties_close( properties
);
451 context
->producer_properties
= NULL
;
452 properties
= mlt_service_properties( service
);
455 //fprintf( stderr, "setting filter in %lld out %lld\n", mlt_properties_get_position( properties, "in" ), mlt_properties_get_position( properties, "out" ) );
456 mlt_filter_set_in_and_out( MLT_FILTER( service
),
457 mlt_properties_get_position( properties
, "in" ),
458 mlt_properties_get_position( properties
, "out" ) );
460 // Get the parent producer from the stack
461 mlt_service tractor
= context_pop_service( context
);
463 if ( tractor
!= NULL
)
465 //fprintf( stderr, "connecting tractor %s to filter\n", mlt_properties_get( mlt_service_properties( tractor ), "resource" ) );
466 // Connect the tractor to the filter
467 if ( strcmp( mlt_properties_get( mlt_service_properties( tractor
), "resource" ), "<tractor>" ) == 0 )
468 mlt_tractor_connect( MLT_TRACTOR( tractor
), service
);
470 // Push the parent producer back onto the stack
471 context_push_service( context
, tractor
);
474 //fprintf( stderr, "setting filter in %lld out %lld\n", mlt_properties_get_position( properties, "in" ), mlt_properties_get_position( properties, "out" ) );
475 // If a producer alias is in the producer_map, get it
476 snprintf( key
, 10, "%p", producer
);
477 if ( mlt_properties_get_data( context
->producer_map
, key
, NULL
) != NULL
)
478 producer
= mlt_properties_get_data( context
->producer_map
, key
, NULL
);
480 // Put the producer in the producer map
481 id
= mlt_properties_get( mlt_service_properties( producer
), "id" );
483 mlt_properties_set_data( context
->producer_map
, id
, service
, 0, NULL
, NULL
);
485 // For filter chain support, add an alias to the producer map
486 snprintf( key
, 10, "%p", service
);
487 mlt_properties_set_data( context
->producer_map
, key
, producer
, 0, NULL
, NULL
);
489 // Push the filter onto the stack
490 context_push_service( context
, service
);
494 static void on_end_transition( deserialise_context context
, const xmlChar
*name
)
496 mlt_properties properties
= context
->producer_properties
;
497 if ( properties
== NULL
)
500 // Get the producer from the stack
501 mlt_service producer
= context_pop_service( context
);
503 // Create the transition
504 mlt_service service
= MLT_SERVICE( mlt_factory_transition( mlt_properties_get( properties
, "mlt_service" ), NULL
) );
506 track_service( context
->destructors
, service
, (mlt_destructor
) mlt_transition_close
);
508 // Propogate the properties
509 mlt_properties_inherit( mlt_service_properties( service
), properties
);
510 mlt_properties_close( properties
);
511 context
->producer_properties
= NULL
;
512 properties
= mlt_service_properties( service
);
515 mlt_transition_set_in_and_out( MLT_TRANSITION( service
),
516 mlt_properties_get_position( properties
, "in" ),
517 mlt_properties_get_position( properties
, "out" ) );
519 // Connect the filter to the producer
520 mlt_transition_connect( MLT_TRANSITION( service
), producer
,
521 mlt_properties_get_int( properties
, "a_track" ),
522 mlt_properties_get_int( properties
, "b_track" ) );
524 // Get the tractor from the stack
525 mlt_service tractor
= context_pop_service( context
);
527 // Connect the tractor to the transition
528 mlt_tractor_connect( MLT_TRACTOR( tractor
), service
);
530 // Push the tractor back onto the stack
531 context_push_service( context
, tractor
);
533 // Push the transition onto the stack
534 context_push_service( context
, service
);
537 static void on_start_element( void *ctx
, const xmlChar
*name
, const xmlChar
**atts
)
539 deserialise_context context
= ( deserialise_context
) ctx
;
541 if ( strcmp( name
, "tractor" ) == 0 )
542 on_start_tractor( context
, name
, atts
);
543 else if ( strcmp( name
, "multitrack" ) == 0 )
544 on_start_multitrack( context
, name
, atts
);
545 else if ( strcmp( name
, "playlist" ) == 0 )
546 on_start_playlist( context
, name
, atts
);
547 else if ( strcmp( name
, "producer" ) == 0 )
548 on_start_producer( context
, name
, atts
);
549 else if ( strcmp( name
, "blank" ) == 0 )
550 on_start_blank( context
, name
, atts
);
551 else if ( strcmp( name
, "entry" ) == 0 || strcmp( name
, "track" ) == 0 )
552 on_start_entry_track( context
, name
, atts
);
553 else if ( strcmp( name
, "filter" ) == 0 )
554 on_start_filter( context
, name
, atts
);
555 else if ( strcmp( name
, "transition" ) == 0 )
556 on_start_transition( context
, name
, atts
);
557 else if ( strcmp( name
, "property" ) == 0 )
558 on_start_property( context
, name
, atts
);
561 static void on_end_element( void *ctx
, const xmlChar
*name
)
563 deserialise_context context
= ( deserialise_context
) ctx
;
565 if ( strcmp( name
, "multitrack" ) == 0 )
566 on_end_multitrack( context
, name
);
567 else if ( strcmp( name
, "playlist" ) == 0 )
568 on_end_playlist( context
, name
);
569 else if ( strcmp( name
, "track" ) == 0 )
570 on_end_track( context
, name
);
571 else if ( strcmp( name
, "entry" ) == 0 )
572 on_end_entry( context
, name
);
573 else if ( strcmp( name
, "tractor" ) == 0 )
574 on_end_tractor( context
, name
);
575 else if ( strcmp( name
, "property" ) == 0 )
576 on_end_property( context
, name
);
577 else if ( strcmp( name
, "producer" ) == 0 )
578 on_end_producer( context
, name
);
579 else if ( strcmp( name
, "filter" ) == 0 )
580 on_end_filter( context
, name
);
581 else if ( strcmp( name
, "transition" ) == 0 )
582 on_end_transition( context
, name
);
585 static void on_characters( void *ctx
, const xmlChar
*ch
, int len
)
587 deserialise_context context
= ( deserialise_context
) ctx
;
588 char *value
= calloc( len
+ 1, 1 );
591 strncpy( value
, (const char*) ch
, len
);
593 if ( context
->property
!= NULL
&& context
->producer_properties
!= NULL
)
594 mlt_properties_set( context
->producer_properties
, context
->property
, value
);
599 mlt_producer
producer_westley_init( char *filename
)
601 xmlSAXHandler
*sax
= calloc( 1, sizeof( xmlSAXHandler
) );
602 struct deserialise_context_s
*context
= calloc( 1, sizeof( struct deserialise_context_s
) );
603 mlt_properties properties
= NULL
;
606 context
->producer_map
= mlt_properties_new();
607 context
->destructors
= mlt_properties_new();
609 // We need to track the number of registered filters
610 mlt_properties_set_int( context
->destructors
, "registered", 0 );
612 // We need the directory prefix which was used for the westley
613 mlt_properties_set( context
->producer_map
, "_root", "" );
614 if ( strchr( filename
, '/' ) )
617 mlt_properties_set( context
->producer_map
, "_root", filename
);
618 root
= mlt_properties_get( context
->producer_map
, "_root" );
619 *( strrchr( root
, '/' ) + 1 ) = '\0';
622 sax
->startElement
= on_start_element
;
623 sax
->endElement
= on_end_element
;
624 sax
->characters
= on_characters
;
625 sax
->cdataBlock
= on_characters
;
627 // I REALLY DON'T GET THIS - HOW THE HELL CAN YOU REFERENCE A WESTLEY IN A WESTLEY???
630 xmlSAXUserParseFile( sax
, context
, filename
);
632 // Need the complete producer list for various reasons
633 properties
= context
->destructors
;
635 // Get the last producer on the stack
636 mlt_service service
= context_pop_service( context
);
638 // Do we actually have a producer here?
639 if ( service
!= NULL
)
641 // Now make sure we don't have a reference to the service in the properties
642 for ( i
= mlt_properties_count( properties
) - 1; i
>= 1; i
-- )
644 char *name
= mlt_properties_get_name( properties
, i
);
645 if ( mlt_properties_get_data( properties
, name
, NULL
) == service
)
647 mlt_properties_set_data( properties
, name
, service
, 0, NULL
, NULL
);
652 // We are done referencing destructor property list
653 // Set this var to service properties for convenience
654 properties
= mlt_service_properties( service
);
656 // make the returned service destroy the connected services
657 mlt_properties_set_data( properties
, "__destructors__", context
->destructors
, 0, (mlt_destructor
) mlt_properties_close
, NULL
);
659 // Now assign additional properties
660 mlt_properties_set( properties
, "resource", filename
);
662 // This tells consumer_westley not to deep copy
663 mlt_properties_set( properties
, "westley", "was here" );
668 mlt_properties_close( properties
);
671 free( context
->stack_service
);
672 mlt_properties_close( context
->producer_map
);
675 //xmlCleanupParser();
679 return MLT_PRODUCER( service
);