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Cut management part 1
[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 (they are currently destroyed
22 // when the returned producer is closed).
23
24 #include "producer_westley.h"
25 #include <framework/mlt.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <stdio.h>
29 #include <ctype.h>
30 #include <unistd.h>
31
32 #include <libxml/parser.h>
33 #include <libxml/parserInternals.h> // for xmlCreateFileParserCtxt
34 #include <libxml/tree.h>
35
36 #define STACK_SIZE 1000
37 #define BRANCH_SIG_LEN 4000
38
39 #undef DEBUG
40 #ifdef DEBUG
41 extern xmlDocPtr westley_make_doc( mlt_service service );
42 #endif
43
44 enum service_type
45 {
46 mlt_invalid_type,
47 mlt_unknown_type,
48 mlt_producer_type,
49 mlt_playlist_type,
50 mlt_entry_type,
51 mlt_tractor_type,
52 mlt_multitrack_type,
53 mlt_filter_type,
54 mlt_transition_type,
55 mlt_consumer_type,
56 mlt_field_type,
57 mlt_service_type,
58 mlt_dummy_filter_type,
59 mlt_dummy_transition_type,
60 mlt_dummy_producer_type,
61 };
62
63 struct deserialise_context_s
64 {
65 enum service_type stack_types[ STACK_SIZE ];
66 mlt_service stack_service[ STACK_SIZE ];
67 int stack_service_size;
68 mlt_properties producer_map;
69 mlt_properties destructors;
70 char *property;
71 int is_value;
72 xmlDocPtr value_doc;
73 xmlNodePtr stack_node[ STACK_SIZE ];
74 int stack_node_size;
75 xmlDocPtr entity_doc;
76 int entity_is_replace;
77 int depth;
78 int branch[ STACK_SIZE ];
79 const xmlChar *publicId;
80 const xmlChar *systemId;
81 mlt_properties params;
82 };
83 typedef struct deserialise_context_s *deserialise_context;
84
85 /** Convert the numerical current branch address to a dot-delimited string.
86 */
87 static char *serialise_branch( deserialise_context this, char *s )
88 {
89 int i;
90
91 s[0] = 0;
92 for ( i = 0; i < this->depth; i++ )
93 {
94 int len = strlen( s );
95 snprintf( s + len, BRANCH_SIG_LEN - len, "%d.", this->branch[ i ] );
96 }
97 return s;
98 }
99
100 /** Push a service.
101 */
102
103 static int context_push_service( deserialise_context this, mlt_service that, enum service_type type )
104 {
105 int ret = this->stack_service_size >= STACK_SIZE - 1;
106 if ( ret == 0 )
107 {
108 this->stack_service[ this->stack_service_size ] = that;
109 this->stack_types[ this->stack_service_size++ ] = type;
110
111 // Record the tree branch on which this service lives
112 if ( that != NULL && mlt_properties_get( mlt_service_properties( that ), "_westley_branch" ) == NULL )
113 {
114 char s[ BRANCH_SIG_LEN ];
115 mlt_properties_set( mlt_service_properties( that ), "_westley_branch", serialise_branch( this, s ) );
116 }
117 }
118 return ret;
119 }
120
121 /** Pop a service.
122 */
123
124 static mlt_service context_pop_service( deserialise_context this, enum service_type *type )
125 {
126 mlt_service result = NULL;
127 if ( this->stack_service_size > 0 )
128 {
129 result = this->stack_service[ -- this->stack_service_size ];
130 if ( type != NULL )
131 *type = this->stack_types[ this->stack_service_size ];
132 }
133 return result;
134 }
135
136 /** Push a node.
137 */
138
139 static int context_push_node( deserialise_context this, xmlNodePtr node )
140 {
141 int ret = this->stack_node_size >= STACK_SIZE - 1;
142 if ( ret == 0 )
143 this->stack_node[ this->stack_node_size ++ ] = node;
144 return ret;
145 }
146
147 /** Pop a node.
148 */
149
150 static xmlNodePtr context_pop_node( deserialise_context this )
151 {
152 xmlNodePtr result = NULL;
153 if ( this->stack_node_size > 0 )
154 result = this->stack_node[ -- this->stack_node_size ];
155 return result;
156 }
157
158
159 // Set the destructor on a new service
160 static void track_service( mlt_properties properties, void *service, mlt_destructor destructor )
161 {
162 int registered = mlt_properties_get_int( properties, "registered" );
163 char *key = mlt_properties_get( properties, "registered" );
164 mlt_properties_set_data( properties, key, service, 0, destructor, NULL );
165 mlt_properties_set_int( properties, "registered", ++ registered );
166 }
167
168
169 // Prepend the property value with the document root
170 static inline void qualify_property( deserialise_context context, mlt_properties properties, char *name )
171 {
172 char *resource = mlt_properties_get( properties, name );
173 if ( resource != NULL )
174 {
175 // Qualify file name properties
176 char *root = mlt_properties_get( context->producer_map, "root" );
177 if ( root != NULL && strcmp( root, "" ) )
178 {
179 char *full_resource = malloc( strlen( root ) + strlen( resource ) + 2 );
180 if ( resource[ 0 ] != '/' && strchr( resource, ':' ) == NULL )
181 {
182 strcpy( full_resource, root );
183 strcat( full_resource, "/" );
184 strcat( full_resource, resource );
185 }
186 else
187 {
188 strcpy( full_resource, resource );
189 }
190 mlt_properties_set( properties, name, full_resource );
191 free( full_resource );
192 }
193 }
194 }
195
196
197 /** This function adds a producer to a playlist or multitrack when
198 there is no entry or track element.
199 */
200
201 static int add_producer( deserialise_context context, mlt_service service, mlt_position in, mlt_position out )
202 {
203 // Return value (0 = service remains top of stack, 1 means it can be removed)
204 int result = 0;
205
206 // Get the parent producer
207 enum service_type type;
208 mlt_service container = context_pop_service( context, &type );
209 int contained = 0;
210
211 if ( service != NULL && container != NULL )
212 {
213 char *container_branch = mlt_properties_get( mlt_service_properties( container ), "_westley_branch" );
214 char *service_branch = mlt_properties_get( mlt_service_properties( service ), "_westley_branch" );
215 contained = !strncmp( container_branch, service_branch, strlen( container_branch ) );
216 }
217
218 if ( contained )
219 {
220 mlt_properties properties = mlt_service_properties( service );
221 char *hide_s = mlt_properties_get( properties, "hide" );
222
223 // Indicate that this service is no longer top of stack
224 result = 1;
225
226 switch( type )
227 {
228 case mlt_tractor_type:
229 {
230 mlt_multitrack multitrack = mlt_tractor_multitrack( MLT_TRACTOR( container ) );
231 mlt_multitrack_connect( multitrack, MLT_PRODUCER( service ), mlt_multitrack_count( multitrack ) );
232 }
233 break;
234 case mlt_multitrack_type:
235 {
236 mlt_multitrack_connect( MLT_MULTITRACK( container ),
237 MLT_PRODUCER( service ),
238 mlt_multitrack_count( MLT_MULTITRACK( container ) ) );
239 }
240 break;
241 case mlt_playlist_type:
242 {
243 mlt_playlist_append_io( MLT_PLAYLIST( container ), MLT_PRODUCER( service ), in, out );
244 }
245 break;
246 default:
247 result = 0;
248 fprintf( stderr, "Producer defined inside something that isn't a container\n" );
249 break;
250 };
251
252 // Set the hide state of the track producer
253 if ( hide_s != NULL )
254 {
255 if ( strcmp( hide_s, "video" ) == 0 )
256 mlt_properties_set_int( properties, "hide", 1 );
257 else if ( strcmp( hide_s, "audio" ) == 0 )
258 mlt_properties_set_int( properties, "hide", 2 );
259 else if ( strcmp( hide_s, "both" ) == 0 )
260 mlt_properties_set_int( properties, "hide", 3 );
261 }
262 }
263
264 // Put the parent producer back
265 if ( container != NULL )
266 context_push_service( context, container, type );
267
268 return result;
269 }
270
271 /** Attach filters defined on that to this.
272 */
273
274 static void attach_filters( mlt_service this, mlt_service that )
275 {
276 if ( that != NULL )
277 {
278 int i = 0;
279 mlt_filter filter = NULL;
280 for ( i = 0; ( filter = mlt_service_filter( that, i ) ) != NULL; i ++ )
281 {
282 mlt_service_attach( this, filter );
283 attach_filters( mlt_filter_service( filter ), mlt_filter_service( filter ) );
284 }
285 }
286 }
287
288 static void on_start_tractor( deserialise_context context, const xmlChar *name, const xmlChar **atts)
289 {
290 mlt_service service = mlt_tractor_service( mlt_tractor_new( ) );
291 mlt_properties properties = mlt_service_properties( service );
292
293 track_service( context->destructors, service, (mlt_destructor) mlt_tractor_close );
294
295 mlt_properties_set_position( properties, "length", 0 );
296
297 for ( ; atts != NULL && *atts != NULL; atts += 2 )
298 mlt_properties_set( mlt_service_properties( service ), (char*) atts[0], (char*) atts[1] );
299
300 if ( mlt_properties_get_position( properties, "length" ) < mlt_properties_get_position( properties, "out" ) )
301 {
302 mlt_position length = mlt_properties_get_position( properties, "out" ) + 1;
303 mlt_properties_set_position( properties, "length", length );
304 }
305
306 if ( mlt_properties_get( properties, "id" ) != NULL )
307 mlt_properties_set_data( context->producer_map, mlt_properties_get( properties, "id" ), service, 0, NULL, NULL );
308
309 context_push_service( context, service, mlt_tractor_type );
310 }
311
312 static void on_end_tractor( deserialise_context context, const xmlChar *name )
313 {
314 // Get the tractor
315 enum service_type type;
316 mlt_service tractor = context_pop_service( context, &type );
317
318 if ( tractor != NULL && type == mlt_tractor_type )
319 {
320 // See if the tractor should be added to a playlist or multitrack
321 if ( add_producer( context, tractor, 0, mlt_producer_get_out( MLT_PRODUCER( tractor ) ) ) == 0 )
322 context_push_service( context, tractor, type );
323 }
324 }
325
326 static void on_start_multitrack( deserialise_context context, const xmlChar *name, const xmlChar **atts)
327 {
328 enum service_type type;
329 mlt_service parent = context_pop_service( context, &type );
330
331 // If we don't have a parent, then create one now, providing we're in a state where we can
332 if ( parent == NULL || ( type == mlt_playlist_type || type == mlt_multitrack_type ) )
333 {
334 // Push the parent back
335 if ( parent != NULL )
336 context_push_service( context, parent, type );
337
338 // Create a tractor to contain the multitrack
339 parent = mlt_tractor_service( mlt_tractor_new( ) );
340 track_service( context->destructors, parent, (mlt_destructor) mlt_tractor_close );
341 type = mlt_tractor_type;
342
343 // Flag it as a synthesised tractor for clean up later
344 mlt_properties_set_int( mlt_service_properties( parent ), "fezzik_synth", 1 );
345 }
346
347 if ( type == mlt_tractor_type )
348 {
349 mlt_service service = MLT_SERVICE( mlt_tractor_multitrack( MLT_TRACTOR( parent ) ) );
350 mlt_properties properties = mlt_service_properties( service );
351 mlt_properties_set_position( properties, "length", 0 );
352 for ( ; atts != NULL && *atts != NULL; atts += 2 )
353 mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
354
355 if ( mlt_properties_get( properties, "id" ) != NULL )
356 mlt_properties_set_data( context->producer_map, mlt_properties_get( properties,"id" ), service, 0, NULL, NULL );
357
358 context_push_service( context, parent, type );
359 context_push_service( context, service, mlt_multitrack_type );
360 }
361 else
362 {
363 fprintf( stderr, "Invalid multitrack position\n" );
364 }
365 }
366
367 static void on_end_multitrack( deserialise_context context, const xmlChar *name )
368 {
369 // Get the multitrack from the stack
370 enum service_type type;
371 mlt_service service = context_pop_service( context, &type );
372
373 if ( service == NULL || type != mlt_multitrack_type )
374 fprintf( stderr, "End multitrack in the wrong state...\n" );
375 }
376
377 static void on_start_playlist( deserialise_context context, const xmlChar *name, const xmlChar **atts)
378 {
379 mlt_service service = mlt_playlist_service( mlt_playlist_init() );
380 mlt_properties properties = mlt_service_properties( service );
381
382 track_service( context->destructors, service, (mlt_destructor) mlt_playlist_close );
383
384 mlt_properties_set_position( properties, "length", 0 );
385
386 for ( ; atts != NULL && *atts != NULL; atts += 2 )
387 {
388 mlt_properties_set( properties, ( char* )atts[0], ( char* )atts[1] );
389
390 // Out will be overwritten later as we append, so we need to save it
391 if ( strcmp( atts[ 0 ], "out" ) == 0 )
392 mlt_properties_set( properties, "_westley.out", ( char* )atts[ 1 ] );
393 }
394
395 if ( mlt_properties_get( properties, "id" ) != NULL )
396 mlt_properties_set_data( context->producer_map, mlt_properties_get( properties, "id" ), service, 0, NULL, NULL );
397
398 context_push_service( context, service, mlt_playlist_type );
399 }
400
401 static void on_end_playlist( deserialise_context context, const xmlChar *name )
402 {
403 // Get the playlist from the stack
404 enum service_type type;
405 mlt_service service = context_pop_service( context, &type );
406
407 if ( service != NULL && type == mlt_playlist_type )
408 {
409 mlt_properties properties = mlt_service_properties( service );
410 mlt_position in = mlt_properties_get_position( properties, "in" );
411 mlt_position out;
412
413 if ( mlt_properties_get( properties, "_westley.out" ) != NULL )
414 out = mlt_properties_get_position( properties, "_westley.out" );
415 else
416 out = mlt_properties_get_position( properties, "length" ) - 1;
417
418 if ( mlt_properties_get_position( properties, "length" ) < out )
419 mlt_properties_set_position( properties, "length", out + 1 );
420
421 mlt_producer_set_in_and_out( MLT_PRODUCER( service ), in, out );
422
423 // See if the playlist should be added to a playlist or multitrack
424 if ( add_producer( context, service, in, out ) == 0 )
425 context_push_service( context, service, type );
426 }
427 else
428 {
429 fprintf( stderr, "Invalid state of playlist end\n" );
430 }
431 }
432
433 static void on_start_producer( deserialise_context context, const xmlChar *name, const xmlChar **atts)
434 {
435 // use a dummy service to hold properties to allow arbitrary nesting
436 mlt_service service = calloc( 1, sizeof( struct mlt_service_s ) );
437 mlt_service_init( service, NULL );
438
439 mlt_properties properties = mlt_service_properties( service );
440
441 context_push_service( context, service, mlt_dummy_producer_type );
442
443 for ( ; atts != NULL && *atts != NULL; atts += 2 )
444 mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
445 }
446
447 static void on_end_producer( deserialise_context context, const xmlChar *name )
448 {
449 enum service_type type;
450 mlt_service service = context_pop_service( context, &type );
451 mlt_properties properties = mlt_service_properties( service );
452
453 if ( service != NULL && type == mlt_dummy_producer_type )
454 {
455 mlt_service producer = NULL;
456
457 qualify_property( context, properties, "resource" );
458 char *resource = mlt_properties_get( properties, "resource" );
459
460 // Let Kino-SMIL src be a synonym for resource
461 if ( resource == NULL )
462 {
463 qualify_property( context, properties, "src" );
464 resource = mlt_properties_get( properties, "src" );
465 }
466
467 // Instantiate the producer
468 if ( mlt_properties_get( properties, "mlt_service" ) != NULL )
469 {
470 char temp[ 1024 ];
471 strncpy( temp, mlt_properties_get( properties, "mlt_service" ), 1024 );
472 if ( resource != NULL )
473 {
474 strcat( temp, ":" );
475 strncat( temp, resource, 1023 - strlen( temp ) );
476 }
477 producer = MLT_SERVICE( mlt_factory_producer( "fezzik", temp ) );
478 }
479
480 // Just in case the plugin requested doesn't exist...
481 if ( producer == NULL && resource != NULL )
482 producer = MLT_SERVICE( mlt_factory_producer( "fezzik", resource ) );
483
484 // Track this producer
485 track_service( context->destructors, producer, (mlt_destructor) mlt_producer_close );
486
487 // Propogate the properties
488 qualify_property( context, properties, "resource" );
489 qualify_property( context, properties, "luma" );
490 qualify_property( context, properties, "luma.resource" );
491 qualify_property( context, properties, "composite.luma" );
492 qualify_property( context, properties, "producer.resource" );
493
494 // Handle in/out properties separately
495 mlt_position in = -1;
496 mlt_position out = -1;
497
498 // Get in
499 if ( mlt_properties_get( properties, "in" ) != NULL )
500 in = mlt_properties_get_position( properties, "in" );
501 // Let Kino-SMIL clipBegin be a synonym for in
502 if ( mlt_properties_get( properties, "clipBegin" ) != NULL )
503 in = mlt_properties_get_position( properties, "clipBegin" );
504 // Get out
505 if ( mlt_properties_get( properties, "out" ) != NULL )
506 out = mlt_properties_get_position( properties, "out" );
507 // Let Kino-SMIL clipEnd be a synonym for out
508 if ( mlt_properties_get( properties, "clipEnd" ) != NULL )
509 out = mlt_properties_get_position( properties, "clipEnd" );
510
511 // Remove in and out
512 mlt_properties_set( properties, "in", NULL );
513 mlt_properties_set( properties, "out", NULL );
514
515 // Inherit the properties
516 mlt_properties_inherit( mlt_service_properties( producer ), properties );
517
518 // Attach all filters from service onto producer
519 attach_filters( producer, service );
520
521 // Add the producer to the producer map
522 if ( mlt_properties_get( properties, "id" ) != NULL )
523 mlt_properties_set_data( context->producer_map, mlt_properties_get(properties, "id"), producer, 0, NULL, NULL );
524
525 // See if the producer should be added to a playlist or multitrack
526 if ( add_producer( context, producer, in, out ) == 0 )
527 {
528 // Otherwise, set in and out on...
529 if ( in != -1 || out != -1 )
530 {
531 // Get the parent service
532 enum service_type type;
533 mlt_service parent = context_pop_service( context, &type );
534 if ( parent != NULL )
535 {
536 // Get the parent properties
537 properties = mlt_service_properties( parent );
538
539 char *resource = mlt_properties_get( properties, "resource" );
540
541 // Put the parent producer back
542 context_push_service( context, parent, type );
543
544 // If the parent is a track or entry
545 if ( resource && ( strcmp( resource, "<entry>" ) == 0 ) )
546 {
547 mlt_properties_set_position( properties, "in", in );
548 mlt_properties_set_position( properties, "out", out );
549 }
550 else
551 {
552 // Otherwise, set in and out on producer directly
553 mlt_producer_set_in_and_out( MLT_PRODUCER( service ), in, out );
554 }
555 }
556 else
557 {
558 // Otherwise, set in and out on producer directly
559 mlt_producer_set_in_and_out( MLT_PRODUCER( producer ), in, out );
560 }
561 }
562
563 // Push the producer onto the stack
564 context_push_service( context, producer, mlt_producer_type );
565 }
566
567 mlt_service_close( service );
568 }
569 }
570
571 static void on_start_blank( deserialise_context context, const xmlChar *name, const xmlChar **atts)
572 {
573 // Get the playlist from the stack
574 enum service_type type;
575 mlt_service service = context_pop_service( context, &type );
576 mlt_position length = 0;
577
578 if ( type == mlt_playlist_type && service != NULL )
579 {
580 // Look for the length attribute
581 for ( ; atts != NULL && *atts != NULL; atts += 2 )
582 {
583 if ( strcmp( atts[0], "length" ) == 0 )
584 {
585 length = atoll( atts[1] );
586 break;
587 }
588 }
589
590 // Append a blank to the playlist
591 mlt_playlist_blank( MLT_PLAYLIST( service ), length - 1 );
592
593 // Push the playlist back onto the stack
594 context_push_service( context, service, type );
595 }
596 else
597 {
598 fprintf( stderr, "blank without a playlist - a definite no no\n" );
599 }
600 }
601
602 static void on_start_entry( deserialise_context context, const xmlChar *name, const xmlChar **atts)
603 {
604 mlt_producer entry = NULL;
605 mlt_properties temp = mlt_properties_new( );
606
607 for ( ; atts != NULL && *atts != NULL; atts += 2 )
608 {
609 mlt_properties_set( temp, (char*) atts[0], (char*) atts[1] );
610
611 // Look for the producer attribute
612 if ( strcmp( atts[ 0 ], "producer" ) == 0 )
613 {
614 mlt_producer producer = mlt_properties_get_data( context->producer_map, (char*) atts[1], NULL );
615 if ( producer != NULL )
616 mlt_properties_set_data( temp, "producer", producer, 0, NULL, NULL );
617 }
618 }
619
620 // If we have a valid entry
621 if ( mlt_properties_get_data( temp, "producer", NULL ) != NULL )
622 {
623 mlt_playlist_clip_info info;
624 enum service_type parent_type;
625 mlt_service parent = context_pop_service( context, &parent_type );
626 mlt_producer producer = mlt_properties_get_data( temp, "producer", NULL );
627
628 if ( parent_type == mlt_playlist_type )
629 {
630 // Append the producer to the playlist
631 if ( mlt_properties_get( temp, "in" ) != NULL || mlt_properties_get( temp, "out" ) != NULL )
632 {
633 mlt_playlist_append_io( MLT_PLAYLIST( parent ), producer,
634 mlt_properties_get_position( temp, "in" ),
635 mlt_properties_get_position( temp, "out" ) );
636 }
637 else
638 {
639 mlt_playlist_append( MLT_PLAYLIST( parent ), producer );
640 }
641
642 mlt_playlist_get_clip_info( MLT_PLAYLIST( parent ), &info, mlt_playlist_count( MLT_PLAYLIST( parent ) ) - 1 );
643 entry = info.producer;
644 }
645 else
646 {
647 fprintf( stderr, "Entry not part of a playlist...\n" );
648 }
649
650 context_push_service( context, parent, parent_type );
651 }
652
653 // Push the cut onto the stack
654 context_push_service( context, mlt_producer_service( entry ), mlt_entry_type );
655
656 mlt_properties_close( temp );
657 }
658
659 static void on_end_entry( deserialise_context context, const xmlChar *name )
660 {
661 // Get the entry from the stack
662 enum service_type entry_type;
663 mlt_service entry = context_pop_service( context, &entry_type );
664
665 if ( entry == NULL && entry_type != mlt_entry_type )
666 {
667 fprintf( stderr, "Invalid state at end of entry\n" );
668 }
669 }
670
671 static void on_start_track( deserialise_context context, const xmlChar *name, const xmlChar **atts)
672 {
673 // use a dummy service to hold properties to allow arbitrary nesting
674 mlt_service service = calloc( 1, sizeof( struct mlt_service_s ) );
675 mlt_service_init( service, NULL );
676
677 // Push the dummy service onto the stack
678 context_push_service( context, service, mlt_entry_type );
679
680 mlt_properties_set( mlt_service_properties( service ), "resource", "<track>" );
681
682 for ( ; atts != NULL && *atts != NULL; atts += 2 )
683 {
684 mlt_properties_set( mlt_service_properties( service ), (char*) atts[0], (char*) atts[1] );
685
686 // Look for the producer attribute
687 if ( strcmp( atts[ 0 ], "producer" ) == 0 )
688 {
689 mlt_producer producer = mlt_properties_get_data( context->producer_map, (char*) atts[1], NULL );
690 if ( producer != NULL )
691 mlt_properties_set_data( mlt_service_properties( service ), "producer", producer, 0, NULL, NULL );
692 }
693 }
694 }
695
696 static void on_end_track( deserialise_context context, const xmlChar *name )
697 {
698 // Get the track from the stack
699 enum service_type track_type;
700 mlt_service track = context_pop_service( context, &track_type );
701
702 if ( track != NULL && track_type == mlt_entry_type )
703 {
704 mlt_properties track_props = mlt_service_properties( track );
705 enum service_type parent_type;
706 mlt_service parent = context_pop_service( context, &parent_type );
707 mlt_multitrack multitrack = NULL;
708
709 mlt_producer producer = mlt_properties_get_data( track_props, "producer", NULL );
710 mlt_properties producer_props = mlt_producer_properties( producer );
711
712 if ( parent_type == mlt_tractor_type )
713 multitrack = mlt_tractor_multitrack( MLT_TRACTOR( parent ) );
714 else if ( parent_type == mlt_multitrack_type )
715 multitrack = MLT_MULTITRACK( parent );
716 else
717 fprintf( stderr, "track contained in an invalid container\n" );
718
719 if ( multitrack != NULL )
720 {
721 // Set the track on the multitrack
722 mlt_multitrack_connect( multitrack, producer, mlt_multitrack_count( multitrack ) );
723
724 // Set producer i/o if specified
725 if ( mlt_properties_get( track_props, "in" ) != NULL ||
726 mlt_properties_get( track_props, "out" ) != NULL )
727 {
728 mlt_producer_set_in_and_out( MLT_PRODUCER( producer ),
729 mlt_properties_get_position( track_props, "in" ),
730 mlt_properties_get_position( track_props, "out" ) );
731 }
732
733 // Set the hide state of the track producer
734 char *hide_s = mlt_properties_get( track_props, "hide" );
735 if ( hide_s != NULL )
736 {
737 if ( strcmp( hide_s, "video" ) == 0 )
738 mlt_properties_set_int( producer_props, "hide", 1 );
739 else if ( strcmp( hide_s, "audio" ) == 0 )
740 mlt_properties_set_int( producer_props, "hide", 2 );
741 else if ( strcmp( hide_s, "both" ) == 0 )
742 mlt_properties_set_int( producer_props, "hide", 3 );
743 }
744 }
745
746 if ( parent != NULL )
747 context_push_service( context, parent, parent_type );
748
749 mlt_service_close( track );
750 }
751 else
752 {
753 fprintf( stderr, "Invalid state at end of track\n" );
754 }
755 }
756
757 static void on_start_filter( deserialise_context context, const xmlChar *name, const xmlChar **atts)
758 {
759 // use a dummy service to hold properties to allow arbitrary nesting
760 mlt_service service = calloc( 1, sizeof( struct mlt_service_s ) );
761 mlt_service_init( service, NULL );
762
763 mlt_properties properties = mlt_service_properties( service );
764
765 context_push_service( context, service, mlt_dummy_filter_type );
766
767 // Set the properties
768 for ( ; atts != NULL && *atts != NULL; atts += 2 )
769 mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
770 }
771
772 static void on_end_filter( deserialise_context context, const xmlChar *name )
773 {
774 enum service_type type;
775 mlt_service service = context_pop_service( context, &type );
776 mlt_properties properties = mlt_service_properties( service );
777
778 enum service_type parent_type;
779 mlt_service parent = context_pop_service( context, &parent_type );
780
781 if ( service != NULL && type == mlt_dummy_filter_type )
782 {
783 mlt_service filter = MLT_SERVICE( mlt_factory_filter( mlt_properties_get( properties, "mlt_service" ), NULL ) );
784 mlt_properties filter_props = mlt_service_properties( filter );
785
786 track_service( context->destructors, filter, (mlt_destructor) mlt_filter_close );
787
788 // Propogate the properties
789 qualify_property( context, properties, "resource" );
790 qualify_property( context, properties, "luma" );
791 qualify_property( context, properties, "luma.resource" );
792 qualify_property( context, properties, "composite.luma" );
793 qualify_property( context, properties, "producer.resource" );
794 mlt_properties_inherit( filter_props, properties );
795
796 // Attach all filters from service onto filter
797 attach_filters( filter, service );
798
799 // Associate the filter with the parent
800 if ( parent != NULL )
801 {
802 if ( parent_type == mlt_tractor_type )
803 {
804 mlt_field field = mlt_tractor_field( MLT_TRACTOR( parent ) );
805 mlt_field_plant_filter( field, MLT_FILTER( filter ), mlt_properties_get_int( properties, "track" ) );
806 mlt_filter_set_in_and_out( MLT_FILTER( filter ),
807 mlt_properties_get_int( properties, "in" ),
808 mlt_properties_get_int( properties, "out" ) );
809 }
810 else
811 {
812 mlt_service_attach( parent, MLT_FILTER( filter ) );
813 }
814
815 // Put the parent back on the stack
816 context_push_service( context, parent, parent_type );
817 }
818 else
819 {
820 fprintf( stderr, "filter closed with invalid parent...\n" );
821 }
822
823 // Close the dummy filter service
824 mlt_service_close( service );
825 }
826 else
827 {
828 fprintf( stderr, "Invalid top of stack on filter close\n" );
829 }
830 }
831
832 static void on_start_transition( deserialise_context context, const xmlChar *name, const xmlChar **atts)
833 {
834 // use a dummy service to hold properties to allow arbitrary nesting
835 mlt_service service = calloc( 1, sizeof( struct mlt_service_s ) );
836 mlt_service_init( service, NULL );
837
838 mlt_properties properties = mlt_service_properties( service );
839
840 context_push_service( context, service, mlt_dummy_transition_type );
841
842 // Set the properties
843 for ( ; atts != NULL && *atts != NULL; atts += 2 )
844 mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
845 }
846
847 static void on_end_transition( deserialise_context context, const xmlChar *name )
848 {
849 enum service_type type;
850 mlt_service service = context_pop_service( context, &type );
851 mlt_properties properties = mlt_service_properties( service );
852
853 enum service_type parent_type;
854 mlt_service parent = context_pop_service( context, &parent_type );
855
856 if ( service != NULL && type == mlt_dummy_transition_type )
857 {
858 mlt_service effect = MLT_SERVICE( mlt_factory_transition(mlt_properties_get(properties,"mlt_service"), NULL ) );
859 mlt_properties effect_props = mlt_service_properties( effect );
860
861 track_service( context->destructors, effect, (mlt_destructor) mlt_transition_close );
862
863 // Propogate the properties
864 qualify_property( context, properties, "resource" );
865 qualify_property( context, properties, "luma" );
866 qualify_property( context, properties, "luma.resource" );
867 qualify_property( context, properties, "composite.luma" );
868 qualify_property( context, properties, "producer.resource" );
869 mlt_properties_inherit( effect_props, properties );
870
871 // Attach all filters from service onto effect
872 attach_filters( effect, service );
873
874 // Associate the filter with the parent
875 if ( parent != NULL )
876 {
877 if ( parent_type == mlt_tractor_type )
878 {
879 mlt_field field = mlt_tractor_field( MLT_TRACTOR( parent ) );
880 mlt_field_plant_transition( field, MLT_TRANSITION( effect ),
881 mlt_properties_get_int( properties, "a_track" ),
882 mlt_properties_get_int( properties, "b_track" ) );
883 mlt_transition_set_in_and_out( MLT_TRANSITION( effect ),
884 mlt_properties_get_int( properties, "in" ),
885 mlt_properties_get_int( properties, "out" ) );
886 }
887 else
888 {
889 fprintf( stderr, "Misplaced transition - ignoring\n" );
890 }
891
892 // Put the parent back on the stack
893 context_push_service( context, parent, parent_type );
894 }
895 else
896 {
897 fprintf( stderr, "transition closed with invalid parent...\n" );
898 }
899
900 // Close the dummy filter service
901 mlt_service_close( service );
902 }
903 else
904 {
905 fprintf( stderr, "Invalid top of stack on transition close\n" );
906 }
907 }
908
909 static void on_start_property( deserialise_context context, const xmlChar *name, const xmlChar **atts)
910 {
911 enum service_type type;
912 mlt_service service = context_pop_service( context, &type );
913 mlt_properties properties = mlt_service_properties( service );
914 char *value = NULL;
915
916 if ( service != NULL )
917 {
918 // Set the properties
919 for ( ; atts != NULL && *atts != NULL; atts += 2 )
920 {
921 if ( strcmp( atts[ 0 ], "name" ) == 0 )
922 context->property = strdup( atts[ 1 ] );
923 else if ( strcmp( atts[ 0 ], "value" ) == 0 )
924 value = (char*) atts[ 1 ];
925 }
926
927 if ( context->property != NULL && value != NULL )
928 mlt_properties_set( properties, context->property, value );
929
930 // Tell parser to collect any further nodes for serialisation
931 context->is_value = 1;
932
933 context_push_service( context, service, type );
934 }
935 else
936 {
937 fprintf( stderr, "Property without a service '%s'?\n", ( char * )name );
938 }
939 }
940
941 static void on_end_property( deserialise_context context, const xmlChar *name )
942 {
943 enum service_type type;
944 mlt_service service = context_pop_service( context, &type );
945 mlt_properties properties = mlt_service_properties( service );
946
947 if ( service != NULL )
948 {
949 // Tell parser to stop building a tree
950 context->is_value = 0;
951
952 // See if there is a xml tree for the value
953 if ( context->property != NULL && context->value_doc != NULL )
954 {
955 xmlChar *value;
956 int size;
957
958 // Serialise the tree to get value
959 xmlDocDumpMemory( context->value_doc, &value, &size );
960 mlt_properties_set( properties, context->property, value );
961 xmlFree( value );
962 xmlFreeDoc( context->value_doc );
963 context->value_doc = NULL;
964 }
965
966 // Close this property handling
967 free( context->property );
968 context->property = NULL;
969
970 context_push_service( context, service, type );
971 }
972 else
973 {
974 fprintf( stderr, "Property without a service '%s'??\n", (char *)name );
975 }
976 }
977
978 static void on_start_element( void *ctx, const xmlChar *name, const xmlChar **atts)
979 {
980 struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
981 deserialise_context context = ( deserialise_context )( xmlcontext->_private );
982
983 //printf("on_start_element: %s\n", name );
984 context->branch[ context->depth ] ++;
985 context->depth ++;
986
987 // Build a tree from nodes within a property value
988 if ( context->is_value == 1 )
989 {
990 xmlNodePtr node = xmlNewNode( NULL, name );
991
992 if ( context->value_doc == NULL )
993 {
994 // Start a new tree
995 context->value_doc = xmlNewDoc( "1.0" );
996 xmlDocSetRootElement( context->value_doc, node );
997 }
998 else
999 {
1000 // Append child to tree
1001 xmlAddChild( context->stack_node[ context->stack_node_size - 1 ], node );
1002 }
1003 context_push_node( context, node );
1004
1005 // Set the attributes
1006 for ( ; atts != NULL && *atts != NULL; atts += 2 )
1007 xmlSetProp( node, atts[ 0 ], atts[ 1 ] );
1008 }
1009 else if ( strcmp( name, "tractor" ) == 0 )
1010 on_start_tractor( context, name, atts );
1011 else if ( strcmp( name, "multitrack" ) == 0 )
1012 on_start_multitrack( context, name, atts );
1013 else if ( strcmp( name, "playlist" ) == 0 || strcmp( name, "seq" ) == 0 || strcmp( name, "smil" ) == 0 )
1014 on_start_playlist( context, name, atts );
1015 else if ( strcmp( name, "producer" ) == 0 || strcmp( name, "video" ) == 0 )
1016 on_start_producer( context, name, atts );
1017 else if ( strcmp( name, "blank" ) == 0 )
1018 on_start_blank( context, name, atts );
1019 else if ( strcmp( name, "entry" ) == 0 )
1020 on_start_entry( context, name, atts );
1021 else if ( strcmp( name, "track" ) == 0 )
1022 on_start_track( context, name, atts );
1023 else if ( strcmp( name, "filter" ) == 0 )
1024 on_start_filter( context, name, atts );
1025 else if ( strcmp( name, "transition" ) == 0 )
1026 on_start_transition( context, name, atts );
1027 else if ( strcmp( name, "property" ) == 0 )
1028 on_start_property( context, name, atts );
1029 else if ( strcmp( name, "westley" ) == 0 )
1030 for ( ; atts != NULL && *atts != NULL; atts += 2 )
1031 mlt_properties_set( context->producer_map, ( char * )atts[ 0 ], ( char * )atts[ 1 ] );
1032 }
1033
1034 static void on_end_element( void *ctx, const xmlChar *name )
1035 {
1036 struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
1037 deserialise_context context = ( deserialise_context )( xmlcontext->_private );
1038
1039 //printf("on_end_element: %s\n", name );
1040 if ( context->is_value == 1 && strcmp( name, "property" ) != 0 )
1041 context_pop_node( context );
1042 else if ( strcmp( name, "multitrack" ) == 0 )
1043 on_end_multitrack( context, name );
1044 else if ( strcmp( name, "playlist" ) == 0 || strcmp( name, "seq" ) == 0 || strcmp( name, "smil" ) == 0 )
1045 on_end_playlist( context, name );
1046 else if ( strcmp( name, "track" ) == 0 )
1047 on_end_track( context, name );
1048 else if ( strcmp( name, "entry" ) == 0 )
1049 on_end_entry( context, name );
1050 else if ( strcmp( name, "tractor" ) == 0 )
1051 on_end_tractor( context, name );
1052 else if ( strcmp( name, "property" ) == 0 )
1053 on_end_property( context, name );
1054 else if ( strcmp( name, "producer" ) == 0 || strcmp( name, "video" ) == 0 )
1055 on_end_producer( context, name );
1056 else if ( strcmp( name, "filter" ) == 0 )
1057 on_end_filter( context, name );
1058 else if ( strcmp( name, "transition" ) == 0 )
1059 on_end_transition( context, name );
1060
1061 context->branch[ context->depth ] = 0;
1062 context->depth --;
1063 }
1064
1065 static void on_characters( void *ctx, const xmlChar *ch, int len )
1066 {
1067 struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
1068 deserialise_context context = ( deserialise_context )( xmlcontext->_private );
1069 char *value = calloc( len + 1, 1 );
1070 enum service_type type;
1071 mlt_service service = context_pop_service( context, &type );
1072 mlt_properties properties = mlt_service_properties( service );
1073
1074 if ( service != NULL )
1075 context_push_service( context, service, type );
1076
1077 value[ len ] = 0;
1078 strncpy( value, (const char*) ch, len );
1079
1080 if ( context->stack_node_size > 0 )
1081 xmlNodeAddContent( context->stack_node[ context->stack_node_size - 1 ], ( xmlChar* )value );
1082
1083 // libxml2 generates an on_characters immediately after a get_entity within
1084 // an element value, and we ignore it because it is called again during
1085 // actual substitution.
1086 else if ( context->property != NULL && context->entity_is_replace == 0 )
1087 {
1088 char *s = mlt_properties_get( properties, context->property );
1089 if ( s != NULL )
1090 {
1091 // Append new text to existing content
1092 char *new = calloc( strlen( s ) + len + 1, 1 );
1093 strcat( new, s );
1094 strcat( new, value );
1095 mlt_properties_set( properties, context->property, new );
1096 free( new );
1097 }
1098 else
1099 mlt_properties_set( properties, context->property, value );
1100 }
1101 context->entity_is_replace = 0;
1102
1103 free( value);
1104 }
1105
1106 /** Convert parameters parsed from resource into entity declarations.
1107 */
1108 static void params_to_entities( deserialise_context context )
1109 {
1110 if ( context->params != NULL )
1111 {
1112 int i;
1113
1114 // Add our params as entitiy declarations
1115 for ( i = 0; i < mlt_properties_count( context->params ); i++ )
1116 {
1117 xmlChar *name = ( xmlChar* )mlt_properties_get_name( context->params, i );
1118 xmlAddDocEntity( context->entity_doc, name, XML_INTERNAL_GENERAL_ENTITY,
1119 context->publicId, context->systemId, ( xmlChar* )mlt_properties_get( context->params, name ) );
1120 }
1121
1122 // Flag completion
1123 mlt_properties_close( context->params );
1124 context->params = NULL;
1125 }
1126 }
1127
1128 // The following 3 facilitate entity substitution in the SAX parser
1129 static void on_internal_subset( void *ctx, const xmlChar* name,
1130 const xmlChar* publicId, const xmlChar* systemId )
1131 {
1132 struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
1133 deserialise_context context = ( deserialise_context )( xmlcontext->_private );
1134
1135 context->publicId = publicId;
1136 context->systemId = systemId;
1137 xmlCreateIntSubset( context->entity_doc, name, publicId, systemId );
1138
1139 // Override default entities with our parameters
1140 params_to_entities( context );
1141 }
1142
1143 static void on_entity_declaration( void *ctx, const xmlChar* name, int type,
1144 const xmlChar* publicId, const xmlChar* systemId, xmlChar* content)
1145 {
1146 struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
1147 deserialise_context context = ( deserialise_context )( xmlcontext->_private );
1148
1149 xmlAddDocEntity( context->entity_doc, name, type, publicId, systemId, content );
1150 }
1151
1152 xmlEntityPtr on_get_entity( void *ctx, const xmlChar* name )
1153 {
1154 struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
1155 deserialise_context context = ( deserialise_context )( xmlcontext->_private );
1156 xmlEntityPtr e = NULL;
1157
1158 // Setup for entity declarations if not ready
1159 if ( xmlGetIntSubset( context->entity_doc ) == NULL )
1160 {
1161 xmlCreateIntSubset( context->entity_doc, "westley", "", "" );
1162 context->publicId = "";
1163 context->systemId = "";
1164 }
1165
1166 // Add our parameters if not already
1167 params_to_entities( context );
1168
1169 e = xmlGetDocEntity( context->entity_doc, name );
1170
1171 // Send signal to on_characters that an entity substitutin is pending
1172 if ( e != NULL )
1173 context->entity_is_replace = 1;
1174
1175 return e;
1176 }
1177
1178 /** Convert a hexadecimal character to its value.
1179 */
1180 static int tohex( char p )
1181 {
1182 return isdigit( p ) ? p - '0' : tolower( p ) - 'a' + 10;
1183 }
1184
1185 /** Decode a url-encoded string containing hexadecimal character sequences.
1186 */
1187 static char *url_decode( char *dest, char *src )
1188 {
1189 char *p = dest;
1190
1191 while ( *src )
1192 {
1193 if ( *src == '%' )
1194 {
1195 *p ++ = ( tohex( *( src + 1 ) ) << 4 ) | tohex( *( src + 2 ) );
1196 src += 3;
1197 }
1198 else
1199 {
1200 *p ++ = *src ++;
1201 }
1202 }
1203
1204 *p = *src;
1205 return dest;
1206 }
1207
1208 /** Extract the filename from a URL attaching parameters to a properties list.
1209 */
1210 static void parse_url( mlt_properties properties, char *url )
1211 {
1212 int i;
1213 int n = strlen( url );
1214 char *name = NULL;
1215 char *value = NULL;
1216
1217 for ( i = 0; i < n; i++ )
1218 {
1219 switch ( url[ i ] )
1220 {
1221 case '?':
1222 url[ i++ ] = '\0';
1223 name = &url[ i ];
1224 break;
1225
1226 case ':':
1227 case '=':
1228 url[ i++ ] = '\0';
1229 value = &url[ i ];
1230 break;
1231
1232 case '&':
1233 url[ i++ ] = '\0';
1234 if ( name != NULL && value != NULL )
1235 mlt_properties_set( properties, name, value );
1236 name = &url[ i ];
1237 value = NULL;
1238 break;
1239 }
1240 }
1241 if ( name != NULL && value != NULL )
1242 mlt_properties_set( properties, name, value );
1243 }
1244
1245 mlt_producer producer_westley_init( int info, char *data )
1246 {
1247 if ( data == NULL )
1248 return NULL;
1249 xmlSAXHandler *sax = calloc( 1, sizeof( xmlSAXHandler ) );
1250 struct deserialise_context_s *context = calloc( 1, sizeof( struct deserialise_context_s ) );
1251 mlt_properties properties = NULL;
1252 int i = 0;
1253 struct _xmlParserCtxt *xmlcontext;
1254 int well_formed = 0;
1255 char *filename = NULL;
1256
1257 context->producer_map = mlt_properties_new();
1258 context->destructors = mlt_properties_new();
1259 context->params = mlt_properties_new();
1260
1261 // Decode URL and parse parameters
1262 mlt_properties_set( context->producer_map, "root", "" );
1263 if ( info == 0 )
1264 {
1265 filename = strdup( data );
1266 parse_url( context->params, url_decode( filename, data ) );
1267
1268 // We need the directory prefix which was used for the westley
1269 if ( strchr( filename, '/' ) )
1270 {
1271 char *root = NULL;
1272 mlt_properties_set( context->producer_map, "root", filename );
1273 root = mlt_properties_get( context->producer_map, "root" );
1274 *( strrchr( root, '/' ) ) = '\0';
1275
1276 // If we don't have an absolute path here, we're heading for disaster...
1277 if ( root[ 0 ] != '/' )
1278 {
1279 char *cwd = getcwd( NULL, 0 );
1280 char *real = malloc( strlen( cwd ) + strlen( root ) + 2 );
1281 sprintf( real, "%s/%s", cwd, root );
1282 mlt_properties_set( context->producer_map, "root", real );
1283 free( real );
1284 free( cwd );
1285 }
1286 }
1287 }
1288
1289 // We need to track the number of registered filters
1290 mlt_properties_set_int( context->destructors, "registered", 0 );
1291
1292 // Setup SAX callbacks
1293 sax->startElement = on_start_element;
1294 sax->endElement = on_end_element;
1295 sax->characters = on_characters;
1296 sax->cdataBlock = on_characters;
1297 sax->internalSubset = on_internal_subset;
1298 sax->entityDecl = on_entity_declaration;
1299 sax->getEntity = on_get_entity;
1300
1301 // Setup libxml2 SAX parsing
1302 xmlInitParser();
1303 xmlSubstituteEntitiesDefault( 1 );
1304 // This is used to facilitate entity substitution in the SAX parser
1305 context->entity_doc = xmlNewDoc( "1.0" );
1306 if ( info == 0 )
1307 xmlcontext = xmlCreateFileParserCtxt( filename );
1308 else
1309 xmlcontext = xmlCreateMemoryParserCtxt( data, strlen( data ) );
1310
1311 xmlcontext->sax = sax;
1312 xmlcontext->_private = ( void* )context;
1313
1314 // Parse
1315 xmlParseDocument( xmlcontext );
1316 well_formed = xmlcontext->wellFormed;
1317
1318 // Cleanup after parsing
1319 xmlFreeDoc( context->entity_doc );
1320 free( sax );
1321 xmlcontext->sax = NULL;
1322 xmlcontext->_private = NULL;
1323 xmlFreeParserCtxt( xmlcontext );
1324 xmlMemoryDump( ); // for debugging
1325
1326 // Get the last producer on the stack
1327 enum service_type type;
1328 mlt_service service = context_pop_service( context, &type );
1329 if ( well_formed && service != NULL )
1330 {
1331 // Verify it is a producer service (mlt_type="mlt_producer")
1332 // (producer, playlist, multitrack)
1333 char *type = mlt_properties_get( mlt_service_properties( service ), "mlt_type" );
1334 if ( type == NULL || ( strcmp( type, "mlt_producer" ) != 0 && strcmp( type, "producer" ) != 0 ) )
1335 service = NULL;
1336 }
1337
1338 #ifdef DEBUG
1339 xmlDocPtr doc = westley_make_doc( service );
1340 xmlDocFormatDump( stdout, doc, 1 );
1341 xmlFreeDoc( doc );
1342 service = NULL;
1343 #endif
1344
1345 if ( well_formed && service != NULL )
1346 {
1347 char *title = mlt_properties_get( context->producer_map, "title" );
1348
1349 // Need the complete producer list for various reasons
1350 properties = context->destructors;
1351
1352 // Now make sure we don't have a reference to the service in the properties
1353 for ( i = mlt_properties_count( properties ) - 1; i >= 1; i -- )
1354 {
1355 char *name = mlt_properties_get_name( properties, i );
1356 if ( mlt_properties_get_data( properties, name, NULL ) == service )
1357 {
1358 mlt_properties_set_data( properties, name, service, 0, NULL, NULL );
1359 break;
1360 }
1361 }
1362
1363 // We are done referencing destructor property list
1364 // Set this var to service properties for convenience
1365 properties = mlt_service_properties( service );
1366
1367 // make the returned service destroy the connected services
1368 mlt_properties_set_data( properties, "__destructors__", context->destructors, 0, (mlt_destructor) mlt_properties_close, NULL );
1369
1370 // Assign the title
1371 mlt_properties_set( properties, "title", title );
1372
1373 // Handle deep copies
1374 if ( getenv( "MLT_WESTLEY_DEEP" ) == NULL )
1375 {
1376 // Now assign additional properties
1377 if ( info == 0 )
1378 mlt_properties_set( properties, "resource", data );
1379
1380 // This tells consumer_westley not to deep copy
1381 mlt_properties_set( properties, "westley", "was here" );
1382 }
1383 else
1384 {
1385 // Allow the project to be edited
1386 mlt_properties_set_int( properties, "_mlt_service_hidden", 1 );
1387 }
1388 }
1389 else
1390 {
1391 // Return null if not well formed
1392 service = NULL;
1393
1394 // Clean up
1395 mlt_properties_close( context->destructors );
1396 }
1397
1398 // Clean up
1399 mlt_properties_close( context->producer_map );
1400 if ( context->params != NULL )
1401 mlt_properties_close( context->params );
1402 free( context );
1403 free( filename );
1404
1405 return MLT_PRODUCER( service );
1406 }
my melted branch