808d5ad56a87670098d1dd5e6a5bc73f3685ca34
[melted] / src / modules / westley / producer_westley.c
1 /*
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>
5 *
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.
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 // TODO: destroy unreferenced producers
22
23 #include "producer_westley.h"
24 #include <framework/mlt.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <stdio.h>
28
29 #include <libxml/parser.h>
30
31 #define STACK_SIZE 1000
32
33 struct deserialise_context_s
34 {
35 mlt_service stack_service[ STACK_SIZE ];
36 int stack_service_size;
37 mlt_properties producer_map;
38 mlt_properties destructors;
39 char *property;
40 mlt_properties producer_properties;
41 };
42 typedef struct deserialise_context_s *deserialise_context;
43
44
45 /** Push a service.
46 */
47
48 static int context_push_service( deserialise_context this, mlt_service that )
49 {
50 int ret = this->stack_service_size >= STACK_SIZE;
51 if ( ret == 0 )
52 this->stack_service[ this->stack_service_size ++ ] = that;
53 return ret;
54 }
55
56 /** Pop a service.
57 */
58
59 static mlt_service context_pop_service( deserialise_context this )
60 {
61 mlt_service result = NULL;
62 if ( this->stack_service_size > 0 )
63 result = this->stack_service[ -- this->stack_service_size ];
64 return result;
65 }
66
67 // Set the destructor on a new service
68 static void track_service( mlt_properties properties, void *service, mlt_destructor destructor )
69 {
70 int registered = mlt_properties_get_int( properties, "registered" );
71 char *key = mlt_properties_get( properties, "registered" );
72 mlt_properties_set_data( properties, key, service, 0, destructor, NULL );
73 mlt_properties_set_int( properties, "registered", ++ registered );
74 }
75
76 static void on_start_tractor( deserialise_context context, const xmlChar *name, const xmlChar **atts)
77 {
78 mlt_service service = mlt_tractor_service( mlt_tractor_init() );
79 mlt_properties properties = mlt_service_properties( service );
80
81 track_service( context->destructors, service, (mlt_destructor) mlt_tractor_close );
82
83 mlt_properties_set_position( properties, "length", 0 );
84
85 for ( ; atts != NULL && *atts != NULL; atts += 2 )
86 mlt_properties_set( mlt_service_properties( service ), (char*) atts[0], (char*) atts[1] );
87
88 if ( mlt_properties_get_position( properties, "length" ) < mlt_properties_get_position( properties, "out" ) )
89 {
90 mlt_position length = mlt_properties_get_position( properties, "out" ) + 1;
91 mlt_properties_set_position( properties, "length", length );
92 }
93
94 context_push_service( context, service );
95 }
96
97 static void on_start_multitrack( deserialise_context context, const xmlChar *name, const xmlChar **atts)
98 {
99 mlt_service service = mlt_multitrack_service( mlt_multitrack_init() );
100 mlt_properties properties = mlt_service_properties( service );
101
102 track_service( context->destructors, service, (mlt_destructor) mlt_multitrack_close );
103
104 mlt_properties_set_position( properties, "length", 0 );
105
106 for ( ; atts != NULL && *atts != NULL; atts += 2 )
107 mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
108
109 context_push_service( context, service );
110 }
111
112 static void on_start_playlist( deserialise_context context, const xmlChar *name, const xmlChar **atts)
113 {
114 mlt_service service = mlt_playlist_service( mlt_playlist_init() );
115 mlt_properties properties = mlt_service_properties( service );
116
117 track_service( context->destructors, service, (mlt_destructor) mlt_playlist_close );
118
119 mlt_properties_set_position( properties, "length", 0 );
120
121 for ( ; atts != NULL && *atts != NULL; atts += 2 )
122 {
123 mlt_properties_set( properties, ( char* )atts[0], ( char* )atts[1] );
124
125 // Out will be overwritten later as we append, so we need to save it
126 if ( strcmp( atts[ 0 ], "out" ) == 0 )
127 mlt_properties_set( properties, "_westley.out", ( char* )atts[ 1 ] );
128 }
129
130 if ( mlt_properties_get( properties, "id" ) != NULL )
131 mlt_properties_set_data( context->producer_map, mlt_properties_get( properties, "id" ), service, 0, NULL, NULL );
132
133 context_push_service( context, service );
134 }
135
136 static void on_start_producer( deserialise_context context, const xmlChar *name, const xmlChar **atts)
137 {
138 mlt_properties properties = context->producer_properties = mlt_properties_new();
139
140 for ( ; atts != NULL && *atts != NULL; atts += 2 )
141 {
142 mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
143 }
144 }
145
146 static void on_start_blank( deserialise_context context, const xmlChar *name, const xmlChar **atts)
147 {
148 // Get the playlist from the stack
149 mlt_service service = context_pop_service( context );
150 mlt_position length = 0;
151
152 // Look for the length attribute
153 for ( ; atts != NULL && *atts != NULL; atts += 2 )
154 {
155 if ( strcmp( atts[0], "length" ) == 0 )
156 {
157 length = atoll( atts[1] );
158 break;
159 }
160 }
161
162 // Append a blank to the playlist
163 mlt_playlist_blank( MLT_PLAYLIST( service ), length - 1 );
164
165 // Push the playlist back onto the stack
166 context_push_service( context, service );
167 }
168
169 static void on_start_entry_track( deserialise_context context, const xmlChar *name, const xmlChar **atts)
170 {
171 // Use a dummy service to hold properties to allow arbitratry nesting
172 mlt_service service = calloc( 1, sizeof( struct mlt_service_s ) );
173 mlt_service_init( service, NULL );
174
175 // Push the dummy service onto the stack
176 context_push_service( context, service );
177
178 for ( ; atts != NULL && *atts != NULL; atts += 2 )
179 {
180 mlt_properties_set( mlt_service_properties( service ), (char*) atts[0], (char*) atts[1] );
181
182 // Look for the producer attribute
183 if ( strcmp( atts[ 0 ], "producer" ) == 0 )
184 {
185 if ( mlt_properties_get_data( context->producer_map, (char*) atts[1], NULL ) != NULL )
186 // Push the referenced producer onto the stack
187 context_push_service( context, MLT_SERVICE( mlt_properties_get_data( context->producer_map, (char*) atts[1], NULL ) ) );
188 }
189 }
190 }
191
192 static void on_start_filter( deserialise_context context, const xmlChar *name, const xmlChar **atts)
193 {
194 mlt_properties properties = context->producer_properties = mlt_properties_new();
195
196 // Set the properties
197 for ( ; atts != NULL && *atts != NULL; atts += 2 )
198 mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
199 }
200
201 static void on_start_transition( deserialise_context context, const xmlChar *name, const xmlChar **atts)
202 {
203 mlt_properties properties = context->producer_properties = mlt_properties_new();
204
205 // Set the properties
206 for ( ; atts != NULL && *atts != NULL; atts += 2 )
207 mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
208 }
209
210 static void on_start_property( deserialise_context context, const xmlChar *name, const xmlChar **atts)
211 {
212 mlt_properties properties = context->producer_properties;
213 char *value = NULL;
214
215 if ( properties == NULL )
216 return;
217
218 // Set the properties
219 for ( ; atts != NULL && *atts != NULL; atts += 2 )
220 {
221 if ( strcmp( atts[ 0 ], "name" ) == 0 )
222 {
223 context->property = strdup( atts[ 1 ] );
224 }
225 else if ( strcmp( atts[ 0 ], "value" ) == 0 )
226 {
227 value = (char*) atts[ 1 ];
228 }
229 }
230
231 if ( context->property != NULL && value != NULL )
232 mlt_properties_set( properties, context->property, value );
233 }
234
235 static void on_end_multitrack( deserialise_context context, const xmlChar *name )
236 {
237 // Get the producer (multitrack) from the stack
238 mlt_service producer = context_pop_service( context );
239
240 // Get the tractor from the stack
241 mlt_service service = context_pop_service( context );
242
243 // Connect the tractor to the producer
244 mlt_tractor_connect( MLT_TRACTOR( service ), producer );
245 mlt_properties_set_data( mlt_service_properties( service ), "multitrack",
246 MLT_MULTITRACK( producer ), 0, NULL, NULL );
247
248 // Push the tractor back onto the stack
249 context_push_service( context, service );
250
251 // Push the producer back onto the stack
252 context_push_service( context, producer );
253 }
254
255 static void on_end_playlist( deserialise_context context, const xmlChar *name )
256 {
257 // Get the playlist from the stack
258 mlt_service service = context_pop_service( context );
259 mlt_properties properties = mlt_service_properties( service );
260
261 mlt_position in = mlt_properties_get_position( properties, "in" );
262 mlt_position out;
263
264 if ( mlt_properties_get( properties, "_westley.out" ) != NULL )
265 out = mlt_properties_get_position( properties, "_westley.out" );
266 else
267 out = mlt_properties_get_position( properties, "length" ) - 1;
268
269 if ( mlt_properties_get_position( properties, "length" ) < out )
270 mlt_properties_set_position( properties, "length", out + 1 );
271
272 mlt_producer_set_in_and_out( MLT_PRODUCER( service ), in, out );
273
274 // Push the playlist back onto the stack
275 context_push_service( context, service );
276 }
277
278 static void on_end_track( deserialise_context context, const xmlChar *name )
279 {
280 // Get the producer from the stack
281 mlt_service producer = context_pop_service( context );
282
283 // Get the dummy track service from the stack
284 mlt_service track = context_pop_service( context );
285
286 // Get the multitrack from the stack
287 mlt_service service = context_pop_service( context );
288
289 // Set the track on the multitrack
290 mlt_multitrack_connect( MLT_MULTITRACK( service ),
291 MLT_PRODUCER( producer ),
292 mlt_multitrack_count( MLT_MULTITRACK( service ) ) );
293
294 // Set producer i/o if specified
295 if ( mlt_properties_get( mlt_service_properties( track ), "in" ) != NULL ||
296 mlt_properties_get( mlt_service_properties( track ), "out" ) != NULL )
297 {
298 mlt_producer_set_in_and_out( MLT_PRODUCER( producer ),
299 mlt_properties_get_position( mlt_service_properties( track ), "in" ),
300 mlt_properties_get_position( mlt_service_properties( track ), "out" ) );
301 }
302
303 // Push the multitrack back onto the stack
304 context_push_service( context, service );
305
306 mlt_service_close( track );
307 }
308
309 static void on_end_entry( deserialise_context context, const xmlChar *name )
310 {
311 // Get the producer from the stack
312 mlt_service producer = context_pop_service( context );
313
314 // Get the dummy entry service from the stack
315 mlt_service entry = context_pop_service( context );
316
317 // Get the playlist from the stack
318 mlt_service service = context_pop_service( context );
319
320 // Append the producer to the playlist
321 if ( mlt_properties_get( mlt_service_properties( entry ), "in" ) != NULL ||
322 mlt_properties_get( mlt_service_properties( entry ), "out" ) != NULL )
323 {
324 mlt_playlist_append_io( MLT_PLAYLIST( service ),
325 MLT_PRODUCER( producer ),
326 mlt_properties_get_position( mlt_service_properties( entry ), "in" ),
327 mlt_properties_get_position( mlt_service_properties( entry ), "out" ) );
328 }
329 else
330 {
331 mlt_playlist_append( MLT_PLAYLIST( service ), MLT_PRODUCER( producer ) );
332 }
333
334 // Push the playlist back onto the stack
335 context_push_service( context, service );
336
337 mlt_service_close( entry );
338 }
339
340 static void on_end_tractor( deserialise_context context, const xmlChar *name )
341 {
342 // Get and discard the last producer
343 mlt_producer multitrack = MLT_PRODUCER( context_pop_service( context ) );
344
345 // Get the tractor
346 mlt_service tractor = context_pop_service( context );
347 multitrack = mlt_properties_get_data( mlt_service_properties( tractor ), "multitrack", NULL );
348
349 // Inherit the producer's properties
350 mlt_properties properties = mlt_producer_properties( multitrack );
351 mlt_properties_set_position( properties, "length", mlt_producer_get_out( multitrack ) + 1 );
352 mlt_producer_set_in_and_out( multitrack, 0, mlt_producer_get_out( multitrack ) );
353 mlt_properties_set_double( properties, "fps", mlt_producer_get_fps( multitrack ) );
354
355 // Push the playlist back onto the stack
356 context_push_service( context, tractor );
357 }
358
359 static void on_end_property( deserialise_context context, const xmlChar *name )
360 {
361 // Close this property handling
362 free( context->property );
363 context->property = NULL;
364 }
365
366 static void on_end_producer( deserialise_context context, const xmlChar *name )
367 {
368 mlt_properties properties = context->producer_properties;
369 mlt_service service = NULL;
370
371 if ( properties == NULL )
372 return;
373
374 // Instatiate the producer
375 if ( mlt_properties_get( properties, "resource" ) != NULL )
376 {
377 char *root = mlt_properties_get( context->producer_map, "_root" );
378 char *resource = mlt_properties_get( properties, "resource" );
379 char *full_resource = malloc( strlen( root ) + strlen( resource ) + 1 );
380 if ( resource[ 0 ] != '/' )
381 {
382 strcpy( full_resource, root );
383 strcat( full_resource, resource );
384 }
385 else
386 {
387 strcpy( full_resource, resource );
388 }
389 service = MLT_SERVICE( mlt_factory_producer( "fezzik", full_resource ) );
390 free( full_resource );
391 }
392 if ( service == NULL && mlt_properties_get( properties, "mlt_service" ) != NULL )
393 {
394 service = MLT_SERVICE( mlt_factory_producer( mlt_properties_get( properties, "mlt_service" ),
395 mlt_properties_get( properties, "resource" ) ) );
396 }
397
398 track_service( context->destructors, service, (mlt_destructor) mlt_producer_close );
399
400 // Add the producer to the producer map
401 if ( mlt_properties_get( properties, "id" ) != NULL )
402 mlt_properties_set_data( context->producer_map, mlt_properties_get( properties, "id" ), service, 0, NULL, NULL );
403
404 mlt_properties_inherit( mlt_service_properties( service ), properties );
405 mlt_properties_close( properties );
406 context->producer_properties = NULL;
407 properties = mlt_service_properties( service );
408
409 // Set in and out
410 mlt_producer_set_in_and_out( MLT_PRODUCER( service ),
411 mlt_properties_get_position( properties, "in" ),
412 mlt_properties_get_position( properties, "out" ) );
413
414 // Push the new producer onto the stack
415 context_push_service( context, service );
416 }
417
418 static void on_end_filter( deserialise_context context, const xmlChar *name )
419 {
420 mlt_properties properties = context->producer_properties;
421 if ( properties == NULL )
422 return;
423
424 char *id;
425 char key[11];
426 key[ 10 ] = '\0';
427
428 // Get the producer from the stack
429 mlt_service producer = context_pop_service( context );
430 //fprintf( stderr, "connecting filter to %s\n", mlt_properties_get( mlt_service_properties( producer ), "resource" ) );
431
432 // Create the filter
433 mlt_service service = MLT_SERVICE( mlt_factory_filter( mlt_properties_get( properties, "mlt_service" ), NULL ) );
434
435 track_service( context->destructors, service, (mlt_destructor) mlt_filter_close );
436
437 // Connect the filter to the producer
438 mlt_filter_connect( MLT_FILTER( service ), producer,
439 mlt_properties_get_int( properties, "track" ) );
440
441 // Set in and out from producer if non existant
442 if ( mlt_properties_get( properties, "in" ) == NULL )
443 mlt_properties_set_position( properties, "in", mlt_producer_get_in( MLT_PRODUCER( producer ) ) );
444 if ( mlt_properties_get( properties, "out" ) == NULL )
445 mlt_properties_set_position( properties, "out", mlt_producer_get_out( MLT_PRODUCER( producer ) ) );
446
447 // Propogate the properties
448 mlt_properties_inherit( mlt_service_properties( service ), properties );
449 mlt_properties_close( properties );
450 context->producer_properties = NULL;
451 properties = mlt_service_properties( service );
452
453 // Set in and out
454 //fprintf( stderr, "setting filter in %lld out %lld\n", mlt_properties_get_position( properties, "in" ), mlt_properties_get_position( properties, "out" ) );
455 mlt_filter_set_in_and_out( MLT_FILTER( service ),
456 mlt_properties_get_position( properties, "in" ),
457 mlt_properties_get_position( properties, "out" ) );
458
459 // Get the parent producer from the stack
460 mlt_service tractor = context_pop_service( context );
461
462 if ( tractor != NULL )
463 {
464 //fprintf( stderr, "connecting tractor %s to filter\n", mlt_properties_get( mlt_service_properties( tractor ), "resource" ) );
465 // Connect the tractor to the filter
466 if ( strcmp( mlt_properties_get( mlt_service_properties( tractor ), "resource" ), "<tractor>" ) == 0 )
467 mlt_tractor_connect( MLT_TRACTOR( tractor ), service );
468
469 // Push the parent producer back onto the stack
470 context_push_service( context, tractor );
471 }
472
473 //fprintf( stderr, "setting filter in %lld out %lld\n", mlt_properties_get_position( properties, "in" ), mlt_properties_get_position( properties, "out" ) );
474 // If a producer alias is in the producer_map, get it
475 snprintf( key, 10, "%p", producer );
476 if ( mlt_properties_get_data( context->producer_map, key, NULL ) != NULL )
477 producer = mlt_properties_get_data( context->producer_map, key, NULL );
478
479 // Put the producer in the producer map
480 id = mlt_properties_get( mlt_service_properties( producer ), "id" );
481 if ( id != NULL )
482 mlt_properties_set_data( context->producer_map, id, service, 0, NULL, NULL );
483
484 // For filter chain support, add an alias to the producer map
485 snprintf( key, 10, "%p", service );
486 mlt_properties_set_data( context->producer_map, key, producer, 0, NULL, NULL );
487
488 // Push the filter onto the stack
489 context_push_service( context, service );
490
491 }
492
493 static void on_end_transition( deserialise_context context, const xmlChar *name )
494 {
495 mlt_properties properties = context->producer_properties;
496 if ( properties == NULL )
497 return;
498
499 // Get the producer from the stack
500 mlt_service producer = context_pop_service( context );
501
502 // Create the transition
503 mlt_service service = MLT_SERVICE( mlt_factory_transition( mlt_properties_get( properties, "mlt_service" ), NULL ) );
504
505 track_service( context->destructors, service, (mlt_destructor) mlt_transition_close );
506
507 // Propogate the properties
508 mlt_properties_inherit( mlt_service_properties( service ), properties );
509 mlt_properties_close( properties );
510 context->producer_properties = NULL;
511 properties = mlt_service_properties( service );
512
513 // Set in and out
514 mlt_transition_set_in_and_out( MLT_TRANSITION( service ),
515 mlt_properties_get_position( properties, "in" ),
516 mlt_properties_get_position( properties, "out" ) );
517
518 // Connect the filter to the producer
519 mlt_transition_connect( MLT_TRANSITION( service ), producer,
520 mlt_properties_get_int( properties, "a_track" ),
521 mlt_properties_get_int( properties, "b_track" ) );
522
523 // Get the tractor from the stack
524 mlt_service tractor = context_pop_service( context );
525
526 // Connect the tractor to the transition
527 mlt_tractor_connect( MLT_TRACTOR( tractor ), service );
528
529 // Push the tractor back onto the stack
530 context_push_service( context, tractor );
531
532 // Push the transition onto the stack
533 context_push_service( context, service );
534 }
535
536 static void on_start_element( void *ctx, const xmlChar *name, const xmlChar **atts)
537 {
538 deserialise_context context = ( deserialise_context ) ctx;
539
540 if ( strcmp( name, "tractor" ) == 0 )
541 on_start_tractor( context, name, atts );
542 else if ( strcmp( name, "multitrack" ) == 0 )
543 on_start_multitrack( context, name, atts );
544 else if ( strcmp( name, "playlist" ) == 0 )
545 on_start_playlist( context, name, atts );
546 else if ( strcmp( name, "producer" ) == 0 )
547 on_start_producer( context, name, atts );
548 else if ( strcmp( name, "blank" ) == 0 )
549 on_start_blank( context, name, atts );
550 else if ( strcmp( name, "entry" ) == 0 || strcmp( name, "track" ) == 0 )
551 on_start_entry_track( context, name, atts );
552 else if ( strcmp( name, "filter" ) == 0 )
553 on_start_filter( context, name, atts );
554 else if ( strcmp( name, "transition" ) == 0 )
555 on_start_transition( context, name, atts );
556 else if ( strcmp( name, "property" ) == 0 )
557 on_start_property( context, name, atts );
558 }
559
560 static void on_end_element( void *ctx, const xmlChar *name )
561 {
562 deserialise_context context = ( deserialise_context ) ctx;
563
564 if ( strcmp( name, "multitrack" ) == 0 )
565 on_end_multitrack( context, name );
566 else if ( strcmp( name, "playlist" ) == 0 )
567 on_end_playlist( context, name );
568 else if ( strcmp( name, "track" ) == 0 )
569 on_end_track( context, name );
570 else if ( strcmp( name, "entry" ) == 0 )
571 on_end_entry( context, name );
572 else if ( strcmp( name, "tractor" ) == 0 )
573 on_end_tractor( context, name );
574 else if ( strcmp( name, "property" ) == 0 )
575 on_end_property( context, name );
576 else if ( strcmp( name, "producer" ) == 0 )
577 on_end_producer( context, name );
578 else if ( strcmp( name, "filter" ) == 0 )
579 on_end_filter( context, name );
580 else if ( strcmp( name, "transition" ) == 0 )
581 on_end_transition( context, name );
582 }
583
584 static void on_characters( void *ctx, const xmlChar *ch, int len )
585 {
586 deserialise_context context = ( deserialise_context ) ctx;
587 char *value = calloc( len + 1, 1 );
588
589 value[ len ] = 0;
590 strncpy( value, (const char*) ch, len );
591
592 if ( context->property != NULL && context->producer_properties != NULL )
593 mlt_properties_set( context->producer_properties, context->property, value );
594
595 free( value);
596 }
597
598 mlt_producer producer_westley_init( char *filename )
599 {
600 xmlSAXHandler *sax = calloc( 1, sizeof( xmlSAXHandler ) );
601 struct deserialise_context_s *context = calloc( 1, sizeof( struct deserialise_context_s ) );
602 mlt_properties properties = NULL;
603 int i = 0;
604
605 context->producer_map = mlt_properties_new();
606 context->destructors = mlt_properties_new();
607
608 // We need to track the number of registered filters
609 mlt_properties_set_int( context->destructors, "registered", 0 );
610
611 // We need the directory prefix which was used for the westley
612 mlt_properties_set( context->producer_map, "_root", "" );
613 if ( strchr( filename, '/' ) )
614 {
615 char *root = NULL;
616 mlt_properties_set( context->producer_map, "_root", filename );
617 root = mlt_properties_get( context->producer_map, "_root" );
618 *( strrchr( root, '/' ) + 1 ) = '\0';
619 }
620
621 sax->startElement = on_start_element;
622 sax->endElement = on_end_element;
623 sax->characters = on_characters;
624
625 // I REALLY DON'T GET THIS - HOW THE HELL CAN YOU REFERENCE A WESTLEY IN A WESTLEY???
626 xmlInitParser();
627
628 xmlSAXUserParseFile( sax, context, filename );
629
630 // Need the complete producer list for various reasons
631 properties = context->destructors;
632
633 // Get the last producer on the stack
634 mlt_service service = context_pop_service( context );
635
636 // Do we actually have a producer here?
637 if ( service != NULL )
638 {
639 // Now make sure we don't have a reference to the service in the properties
640 for ( i = mlt_properties_count( properties ) - 1; i >= 1; i -- )
641 {
642 char *name = mlt_properties_get_name( properties, i );
643 if ( mlt_properties_get_data( properties, name, NULL ) == service )
644 {
645 mlt_properties_set_data( properties, name, service, 0, NULL, NULL );
646 break;
647 }
648 }
649
650 // We are done referencing destructor property list
651 // Set this var to service properties for convenience
652 properties = mlt_service_properties( service );
653
654 // make the returned service destroy the connected services
655 mlt_properties_set_data( properties, "__destructors__", context->destructors, 0, (mlt_destructor) mlt_properties_close, NULL );
656
657 // Now assign additional properties
658 mlt_properties_set( properties, "resource", filename );
659
660 // This tells consumer_westley not to deep copy
661 mlt_properties_set( properties, "westley", "was here" );
662 }
663 else
664 {
665 // Clean up
666 mlt_properties_close( properties );
667 }
668
669 free( context->stack_service );
670 mlt_properties_close( context->producer_map );
671 //free( context );
672 free( sax );
673 xmlCleanupParser();
674 xmlMemoryDump( );
675
676
677 return MLT_PRODUCER( service );
678 }
679