2 * mlt_producer.c -- abstraction for all producer services
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "mlt_producer.h"
22 #include "mlt_factory.h"
23 #include "mlt_frame.h"
24 #include "mlt_parser.h"
25 #include "mlt_profile.h"
32 /** Forward references.
35 static int producer_get_frame( mlt_service this, mlt_frame_ptr frame, int index );
36 static void mlt_producer_property_changed( mlt_service owner, mlt_producer this, char *name );
37 static void mlt_producer_service_changed( mlt_service owner, mlt_producer this );
39 //#define _MLT_PRODUCER_CHECKS_ 1
41 #ifdef _MLT_PRODUCER_CHECKS_
42 static int producers_created = 0;
43 static int producers_destroyed = 0;
49 int mlt_producer_init( mlt_producer this, void *child )
51 // Check that we haven't received NULL
52 int error = this == NULL;
54 // Continue if no error
57 #ifdef _MLT_PRODUCER_CHECKS_
61 // Initialise the producer
62 memset( this, 0, sizeof( struct mlt_producer_s ) );
64 // Associate with the child
67 // Initialise the service
68 if ( mlt_service_init( &this->parent, this ) == 0 )
70 // The parent is the service
71 mlt_service parent = &this->parent;
73 // Define the parent close
74 parent->close = ( mlt_destructor )mlt_producer_close;
75 parent->close_object = this;
77 // For convenience, we'll assume the close_object is this
78 this->close_object = this;
80 // Get the properties of the parent
81 mlt_properties properties = MLT_SERVICE_PROPERTIES( parent );
83 // Set the default properties
84 mlt_properties_set( properties, "mlt_type", "mlt_producer" );
85 mlt_properties_set_position( properties, "_position", 0.0 );
86 mlt_properties_set_double( properties, "_frame", 0 );
87 mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( NULL ) );
88 mlt_properties_set_double( properties, "_speed", 1.0 );
89 mlt_properties_set_position( properties, "in", 0 );
90 mlt_properties_set_position( properties, "out", 14999 );
91 mlt_properties_set_position( properties, "length", 15000 );
92 mlt_properties_set( properties, "eof", "pause" );
93 mlt_properties_set( properties, "resource", "<producer>" );
95 // Override service get_frame
96 parent->get_frame = producer_get_frame;
98 mlt_events_listen( properties, this, "service-changed", ( mlt_listener )mlt_producer_service_changed );
99 mlt_events_listen( properties, this, "property-changed", ( mlt_listener )mlt_producer_property_changed );
100 mlt_events_register( properties, "producer-changed", NULL );
107 /** Listener for property changes.
110 static void mlt_producer_property_changed( mlt_service owner, mlt_producer this, char *name )
112 if ( !strcmp( name, "in" ) || !strcmp( name, "out" ) || !strcmp( name, "length" ) )
113 mlt_events_fire( MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( this ) ), "producer-changed", NULL );
116 /** Listener for service changes.
119 static void mlt_producer_service_changed( mlt_service owner, mlt_producer this )
121 mlt_events_fire( MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( this ) ), "producer-changed", NULL );
124 /** Create a new producer.
127 mlt_producer mlt_producer_new( )
129 mlt_producer this = malloc( sizeof( struct mlt_producer_s ) );
130 mlt_producer_init( this, NULL );
134 /** Determine if producer is a cut.
137 int mlt_producer_is_cut( mlt_producer this )
139 return mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( this ), "_cut" );
142 /** Determine if producer is a mix.
145 int mlt_producer_is_mix( mlt_producer this )
147 mlt_properties properties = this != NULL ? MLT_PRODUCER_PROPERTIES( this ) : NULL;
148 mlt_tractor tractor = properties != NULL ? mlt_properties_get_data( properties, "mlt_mix", NULL ) : NULL;
149 return tractor != NULL;
152 /** Determine if the producer is a blank [from a playlist].
155 int mlt_producer_is_blank( mlt_producer this )
157 return this == NULL || !strcmp( mlt_properties_get( MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( this ) ), "resource" ), "blank" );
160 /** Obtain the parent producer.
163 mlt_producer mlt_producer_cut_parent( mlt_producer this )
165 mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
166 if ( mlt_producer_is_cut( this ) )
167 return mlt_properties_get_data( properties, "_cut_parent", NULL );
172 /** Create a cut of this producer
175 mlt_producer mlt_producer_cut( mlt_producer this, int in, int out )
177 mlt_producer result = mlt_producer_new( );
178 mlt_producer parent = mlt_producer_cut_parent( this );
179 mlt_properties properties = MLT_PRODUCER_PROPERTIES( result );
180 mlt_properties parent_props = MLT_PRODUCER_PROPERTIES( parent );
182 mlt_events_block( MLT_PRODUCER_PROPERTIES( result ), MLT_PRODUCER_PROPERTIES( result ) );
183 // Special case - allow for a cut of the entire producer (this will squeeze all other cuts to 0)
186 if ( ( out < 0 || out >= mlt_producer_get_length( parent ) ) && !mlt_producer_is_blank( this ) )
187 out = mlt_producer_get_length( parent ) - 1;
189 mlt_properties_inc_ref( parent_props );
190 mlt_properties_set_int( properties, "_cut", 1 );
191 mlt_properties_set_data( properties, "_cut_parent", parent, 0, ( mlt_destructor )mlt_producer_close, NULL );
192 mlt_properties_set_position( properties, "length", mlt_properties_get_position( parent_props, "length" ) );
193 mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( parent_props, "aspect_ratio" ) );
194 mlt_producer_set_in_and_out( result, in, out );
199 /** Get the parent service object.
202 mlt_service mlt_producer_service( mlt_producer this )
204 return this != NULL ? &this->parent : NULL;
207 /** Get the producer properties.
210 mlt_properties mlt_producer_properties( mlt_producer this )
212 return MLT_SERVICE_PROPERTIES( &this->parent );
215 /** Seek to a specified position.
218 int mlt_producer_seek( mlt_producer this, mlt_position position )
220 // Determine eof handling
221 mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
222 char *eof = mlt_properties_get( properties, "eof" );
223 int use_points = 1 - mlt_properties_get_int( properties, "ignore_points" );
225 // Recursive behaviour for cuts - repositions parent and then repositions cut
226 // hence no return on this condition
227 if ( mlt_producer_is_cut( this ) )
228 mlt_producer_seek( mlt_producer_cut_parent( this ), position + mlt_producer_get_in( this ) );
231 if ( position < 0 || mlt_producer_get_playtime( this ) == 0 )
235 else if ( use_points && ( eof == NULL || !strcmp( eof, "pause" ) ) && position >= mlt_producer_get_playtime( this ) )
237 mlt_producer_set_speed( this, 0 );
238 position = mlt_producer_get_playtime( this ) - 1;
240 else if ( use_points && !strcmp( eof, "loop" ) && position >= mlt_producer_get_playtime( this ) )
242 position = (int)position % (int)mlt_producer_get_playtime( this );
246 mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( this ), "_position", position );
248 // Calculate the absolute frame
249 mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( this ), "_frame", use_points * mlt_producer_get_in( this ) + position );
254 /** Get the current position (relative to in point).
257 mlt_position mlt_producer_position( mlt_producer this )
259 return mlt_properties_get_position( MLT_PRODUCER_PROPERTIES( this ), "_position" );
262 /** Get the current position (relative to start of producer).
265 mlt_position mlt_producer_frame( mlt_producer this )
267 return mlt_properties_get_position( MLT_PRODUCER_PROPERTIES( this ), "_frame" );
270 /** Set the playing speed.
273 int mlt_producer_set_speed( mlt_producer this, double speed )
275 return mlt_properties_set_double( MLT_PRODUCER_PROPERTIES( this ), "_speed", speed );
278 /** Get the playing speed.
281 double mlt_producer_get_speed( mlt_producer this )
283 return mlt_properties_get_double( MLT_PRODUCER_PROPERTIES( this ), "_speed" );
286 /** Get the frames per second.
289 double mlt_producer_get_fps( mlt_producer this )
291 mlt_profile profile = mlt_service_profile( MLT_PRODUCER_SERVICE( this ) );
292 return mlt_profile_fps( profile );
295 /** Set the in and out points.
298 int mlt_producer_set_in_and_out( mlt_producer this, mlt_position in, mlt_position out )
300 mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
302 // Correct ins and outs if necessary
305 else if ( in >= mlt_producer_get_length( this ) )
306 in = mlt_producer_get_length( this ) - 1;
310 else if ( out >= mlt_producer_get_length( this ) && !mlt_producer_is_blank( this ) )
311 out = mlt_producer_get_length( this ) - 1;
312 else if ( out >= mlt_producer_get_length( this ) && mlt_producer_is_blank( this ) )
313 mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( this ), "length", out + 1 );
315 // Swap ins and outs if wrong
324 mlt_events_block( properties, properties );
325 mlt_properties_set_position( properties, "in", in );
326 mlt_events_unblock( properties, properties );
327 mlt_properties_set_position( properties, "out", out );
332 /** Physically reduce the producer (typically a cut) to a 0 length.
333 Essentially, all 0 length cuts should be immediately removed by containers.
336 int mlt_producer_clear( mlt_producer this )
340 mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
341 mlt_events_block( properties, properties );
342 mlt_properties_set_position( properties, "in", 0 );
343 mlt_events_unblock( properties, properties );
344 mlt_properties_set_position( properties, "out", -1 );
349 /** Get the in point.
352 mlt_position mlt_producer_get_in( mlt_producer this )
354 return mlt_properties_get_position( MLT_PRODUCER_PROPERTIES( this ), "in" );
357 /** Get the out point.
360 mlt_position mlt_producer_get_out( mlt_producer this )
362 return mlt_properties_get_position( MLT_PRODUCER_PROPERTIES( this ), "out" );
365 /** Get the total play time.
368 mlt_position mlt_producer_get_playtime( mlt_producer this )
370 return mlt_producer_get_out( this ) - mlt_producer_get_in( this ) + 1;
373 /** Get the total length of the producer.
376 mlt_position mlt_producer_get_length( mlt_producer this )
378 return mlt_properties_get_position( MLT_PRODUCER_PROPERTIES( this ), "length" );
381 /** Prepare for next frame.
384 void mlt_producer_prepare_next( mlt_producer this )
386 if ( mlt_producer_get_speed( this ) != 0 )
387 mlt_producer_seek( this, mlt_producer_position( this ) + mlt_producer_get_speed( this ) );
393 static int producer_get_frame( mlt_service service, mlt_frame_ptr frame, int index )
396 mlt_producer this = service != NULL ? service->child : NULL;
398 if ( this != NULL && !mlt_producer_is_cut( this ) )
400 // Get the properties of this producer
401 mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
403 // Determine eof handling
404 char *eof = mlt_properties_get( MLT_PRODUCER_PROPERTIES( this ), "eof" );
406 // Get the speed of the producer
407 double speed = mlt_producer_get_speed( this );
409 // We need to use the clone if it's specified
410 mlt_producer clone = mlt_properties_get_data( properties, "use_clone", NULL );
412 // If no clone is specified, use this
413 clone = clone == NULL ? this : clone;
415 // A properly instatiated producer will have a get_frame method...
416 if ( this->get_frame == NULL || ( !strcmp( eof, "continue" ) && mlt_producer_position( this ) > mlt_producer_get_out( this ) ) )
418 // Generate a test frame
419 *frame = mlt_frame_init( service );
422 result = mlt_frame_set_position( *frame, mlt_producer_position( this ) );
424 // Mark as a test card
425 mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_image", 1 );
426 mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_audio", 1 );
428 // Calculate the next position
429 mlt_producer_prepare_next( this );
433 // Get the frame from the implementation
434 result = this->get_frame( clone, frame, index );
437 // Copy the fps and speed of the producer onto the frame
438 properties = MLT_FRAME_PROPERTIES( *frame );
439 mlt_properties_set_double( properties, "_speed", speed );
440 mlt_properties_set_int( properties, "test_audio", mlt_frame_is_test_audio( *frame ) );
441 mlt_properties_set_int( properties, "test_image", mlt_frame_is_test_card( *frame ) );
442 if ( mlt_properties_get_data( properties, "_producer", NULL ) == NULL )
443 mlt_properties_set_data( properties, "_producer", service, 0, NULL, NULL );
445 else if ( this != NULL )
447 // Get the speed of the cut
448 double speed = mlt_producer_get_speed( this );
450 // Get the parent of this cut
451 mlt_producer parent = mlt_producer_cut_parent( this );
453 // Get the properties of the parent
454 mlt_properties parent_properties = MLT_PRODUCER_PROPERTIES( parent );
456 // Get the properties of the cut
457 mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
459 // Determine the clone index
460 int clone_index = mlt_properties_get_int( properties, "_clone" );
462 // Determine the clone to use
463 mlt_producer clone = this;
465 if ( clone_index > 0 )
468 sprintf( key, "_clone.%d", clone_index - 1 );
469 clone = mlt_properties_get_data( MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( this ) ), key, NULL );
470 if ( clone == NULL ) fprintf( stderr, "requested clone doesn't exist %d\n", clone_index );
471 clone = clone == NULL ? this : clone;
478 // We need to seek to the correct position in the clone
479 mlt_producer_seek( clone, mlt_producer_get_in( this ) + mlt_properties_get_int( properties, "_position" ) );
481 // Assign the clone property to the parent
482 mlt_properties_set_data( parent_properties, "use_clone", clone, 0, NULL, NULL );
484 // Now get the frame from the parents service
485 result = mlt_service_get_frame( MLT_PRODUCER_SERVICE( parent ), frame, index );
487 // We're done with the clone now
488 mlt_properties_set_data( parent_properties, "use_clone", NULL, 0, NULL, NULL );
490 // This is useful and required by always_active transitions to determine in/out points of the cut
491 if ( mlt_properties_get_data( MLT_FRAME_PROPERTIES( *frame ), "_producer", NULL ) == MLT_PRODUCER_SERVICE( parent ) )
492 mlt_properties_set_data( MLT_FRAME_PROPERTIES( *frame ), "_producer", this, 0, NULL, NULL );
494 mlt_properties_set_double( MLT_FRAME_PROPERTIES( *frame ), "_speed", speed );
495 mlt_producer_prepare_next( this );
499 *frame = mlt_frame_init( service );
503 // Pass on all meta properties from the producer/cut on to the frame
504 if ( *frame != NULL && this != NULL )
507 mlt_properties p_props = MLT_PRODUCER_PROPERTIES( this );
508 mlt_properties f_props = MLT_FRAME_PROPERTIES( *frame );
509 int count = mlt_properties_count( p_props );
510 for ( i = 0; i < count; i ++ )
512 char *name = mlt_properties_get_name( p_props, i );
513 if ( !strncmp( name, "meta.", 5 ) )
514 mlt_properties_set( f_props, name, mlt_properties_get( p_props, name ) );
515 else if ( !strncmp( name, "set.", 4 ) )
516 mlt_properties_set( f_props, name + 4, mlt_properties_get( p_props, name ) );
526 int mlt_producer_attach( mlt_producer this, mlt_filter filter )
528 return mlt_service_attach( MLT_PRODUCER_SERVICE( this ), filter );
534 int mlt_producer_detach( mlt_producer this, mlt_filter filter )
536 return mlt_service_detach( MLT_PRODUCER_SERVICE( this ), filter );
539 /** Retrieve a filter.
542 mlt_filter mlt_producer_filter( mlt_producer this, int index )
544 return mlt_service_filter( MLT_PRODUCER_SERVICE( this ), index );
547 /** Clone this producer.
550 static mlt_producer mlt_producer_clone( mlt_producer this )
552 mlt_producer clone = NULL;
553 mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
554 char *resource = mlt_properties_get( properties, "resource" );
555 char *service = mlt_properties_get( properties, "mlt_service" );
556 mlt_profile profile = mlt_service_profile( MLT_PRODUCER_SERVICE( this ) );
558 mlt_events_block( mlt_factory_event_object( ), mlt_factory_event_object( ) );
560 if ( service != NULL )
561 clone = mlt_factory_producer( profile, service, resource );
563 if ( clone == NULL && resource != NULL )
564 clone = mlt_factory_producer( profile, mlt_environment( "MLT_PRODUCER" ), resource );
567 mlt_properties_inherit( MLT_PRODUCER_PROPERTIES( clone ), properties );
569 mlt_events_unblock( mlt_factory_event_object( ), mlt_factory_event_object( ) );
577 static void mlt_producer_set_clones( mlt_producer this, int clones )
579 mlt_producer parent = mlt_producer_cut_parent( this );
580 mlt_properties properties = MLT_PRODUCER_PROPERTIES( parent );
581 int existing = mlt_properties_get_int( properties, "_clones" );
585 // If the number of existing clones is different, then create/remove as necessary
586 if ( existing != clones )
588 if ( existing < clones )
590 for ( i = existing; i < clones; i ++ )
592 mlt_producer clone = mlt_producer_clone( parent );
593 sprintf( key, "_clone.%d", i );
594 mlt_properties_set_data( properties, key, clone, 0, ( mlt_destructor )mlt_producer_close, NULL );
599 for ( i = clones; i < existing; i ++ )
601 sprintf( key, "_clone.%d", i );
602 mlt_properties_set_data( properties, key, NULL, 0, NULL, NULL );
607 // Ensure all properties on the parent are passed to the clones
608 for ( i = 0; i < clones; i ++ )
610 mlt_producer clone = NULL;
611 sprintf( key, "_clone.%d", i );
612 clone = mlt_properties_get_data( properties, key, NULL );
614 mlt_properties_pass( MLT_PRODUCER_PROPERTIES( clone ), properties, "" );
617 // Update the number of clones on the properties
618 mlt_properties_set_int( properties, "_clones", clones );
621 /** Optimise for overlapping cuts from the same clip.
642 static int intersect( clip_references *a, clip_references *b )
644 int diff = ( a->start - b->start ) + ( a->end - b->end );
645 return diff >= 0 && diff < ( a->end - a->start + 1 );
648 static int push( mlt_parser this, int multitrack, int track, int position )
650 mlt_properties properties = mlt_parser_properties( this );
651 mlt_deque stack = mlt_properties_get_data( properties, "stack", NULL );
652 track_info *info = malloc( sizeof( track_info ) );
653 info->multitrack = multitrack;
655 info->position = position;
658 return mlt_deque_push_back( stack, info );
661 static track_info *pop( mlt_parser this )
663 mlt_properties properties = mlt_parser_properties( this );
664 mlt_deque stack = mlt_properties_get_data( properties, "stack", NULL );
665 return mlt_deque_pop_back( stack );
668 static track_info *peek( mlt_parser this )
670 mlt_properties properties = mlt_parser_properties( this );
671 mlt_deque stack = mlt_properties_get_data( properties, "stack", NULL );
672 return mlt_deque_peek_back( stack );
675 static int on_start_multitrack( mlt_parser this, mlt_multitrack object )
677 track_info *info = peek( this );
678 return push( this, info->multitrack ++, info->track, info->position );
681 static int on_start_track( mlt_parser this )
683 track_info *info = peek( this );
684 info->position -= info->offset;
685 info->length -= info->offset;
686 return push( this, info->multitrack, info->track ++, info->position );
689 static int on_start_producer( mlt_parser this, mlt_producer object )
691 mlt_properties properties = mlt_parser_properties( this );
692 mlt_properties producers = mlt_properties_get_data( properties, "producers", NULL );
693 mlt_producer parent = mlt_producer_cut_parent( object );
694 if ( mlt_service_identify( ( mlt_service )mlt_producer_cut_parent( object ) ) == producer_type && mlt_producer_is_cut( object ) )
697 clip_references *old_refs = NULL;
698 clip_references *refs = NULL;
701 track_info *info = peek( this );
702 sprintf( key, "%p", parent );
703 mlt_properties_get_data( producers, key, &count );
704 mlt_properties_set_data( producers, key, parent, ++ count, NULL, NULL );
705 old_refs = mlt_properties_get_data( properties, key, &ref_count );
706 refs = malloc( ( ref_count + 1 ) * sizeof( clip_references ) );
707 if ( old_refs != NULL )
708 memcpy( refs, old_refs, ref_count * sizeof( clip_references ) );
709 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( object ), "_clone", -1 );
710 refs[ ref_count ].cut = object;
711 refs[ ref_count ].start = info->position;
712 refs[ ref_count ].end = info->position + mlt_producer_get_playtime( object ) - 1;
713 mlt_properties_set_data( properties, key, refs, ++ ref_count, free, NULL );
714 info->position += mlt_producer_get_playtime( object );
715 info->length += mlt_producer_get_playtime( object );
720 static int on_end_track( mlt_parser this )
722 track_info *track = pop( this );
723 track_info *multi = peek( this );
724 multi->length += track->length;
725 multi->position += track->length;
726 multi->offset = track->length;
731 static int on_end_multitrack( mlt_parser this, mlt_multitrack object )
733 track_info *multi = pop( this );
734 track_info *track = peek( this );
735 track->position += multi->length;
736 track->length += multi->length;
741 int mlt_producer_optimise( mlt_producer this )
744 mlt_parser parser = mlt_parser_new( );
745 if ( parser != NULL )
747 int i = 0, j = 0, k = 0;
748 mlt_properties properties = mlt_parser_properties( parser );
749 mlt_properties producers = mlt_properties_new( );
750 mlt_deque stack = mlt_deque_init( );
751 mlt_properties_set_data( properties, "producers", producers, 0, ( mlt_destructor )mlt_properties_close, NULL );
752 mlt_properties_set_data( properties, "stack", stack, 0, ( mlt_destructor )mlt_deque_close, NULL );
753 parser->on_start_producer = on_start_producer;
754 parser->on_start_track = on_start_track;
755 parser->on_end_track = on_end_track;
756 parser->on_start_multitrack = on_start_multitrack;
757 parser->on_end_multitrack = on_end_multitrack;
758 push( parser, 0, 0, 0 );
759 mlt_parser_start( parser, MLT_PRODUCER_SERVICE( this ) );
760 free( pop( parser ) );
761 for ( k = 0; k < mlt_properties_count( producers ); k ++ )
763 char *name = mlt_properties_get_name( producers, k );
767 mlt_producer producer = mlt_properties_get_data( producers, name, &count );
768 if ( producer != NULL && count > 1 )
770 clip_references *refs = mlt_properties_get_data( properties, name, &count );
771 for ( i = 0; i < count; i ++ )
774 for ( j = i + 1; j < count; j ++ )
776 if ( intersect( &refs[ i ], &refs[ j ] ) )
779 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( refs[ j ].cut ), "_clone", clones );
782 if ( clones > max_clones )
786 for ( i = 0; i < count; i ++ )
788 mlt_producer cut = refs[ i ].cut;
789 if ( mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( cut ), "_clone" ) == -1 )
790 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( cut ), "_clone", 0 );
793 mlt_producer_set_clones( producer, max_clones );
795 else if ( producer != NULL )
797 clip_references *refs = mlt_properties_get_data( properties, name, &count );
798 for ( i = 0; i < count; i ++ )
800 mlt_producer cut = refs[ i ].cut;
801 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( cut ), "_clone", 0 );
803 mlt_producer_set_clones( producer, 0 );
806 mlt_parser_close( parser );
811 /** Close the producer.
814 void mlt_producer_close( mlt_producer this )
816 if ( this != NULL && mlt_properties_dec_ref( MLT_PRODUCER_PROPERTIES( this ) ) <= 0 )
818 this->parent.close = NULL;
820 if ( this->close != NULL )
822 this->close( this->close_object );
826 int destroy = mlt_producer_is_cut( this );
828 #if _MLT_PRODUCER_CHECKS_ == 1
830 mlt_properties_debug( MLT_PRODUCER_PROPERTIES( this ), "Producer closing", stderr );
833 #ifdef _MLT_PRODUCER_CHECKS_
834 // Increment destroyed count
835 producers_destroyed ++;
837 // Show current stats - these should match when the app is closed
838 fprintf( stderr, "Producers created %d, destroyed %d\n", producers_created, producers_destroyed );
841 mlt_service_close( &this->parent );