2 * mlt_playlist.c -- playlist service class
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_playlist.h"
22 #include "mlt_tractor.h"
23 #include "mlt_multitrack.h"
24 #include "mlt_field.h"
25 #include "mlt_frame.h"
26 #include "mlt_transition.h"
32 /** Virtual playlist entry.
35 struct playlist_entry_s
37 mlt_producer producer
;
38 mlt_position frame_in
;
39 mlt_position frame_out
;
40 mlt_position frame_count
;
42 mlt_position producer_length
;
44 int preservation_hack
;
47 /** Forward declarations
50 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
);
51 static int mlt_playlist_unmix( mlt_playlist
this, int clip
);
52 static int mlt_playlist_resize_mix( mlt_playlist
this, int clip
, int in
, int out
);
57 mlt_playlist
mlt_playlist_init( )
59 mlt_playlist
this = calloc( sizeof( struct mlt_playlist_s
), 1 );
62 mlt_producer producer
= &this->parent
;
64 // Construct the producer
65 mlt_producer_init( producer
, this );
67 // Override the producer get_frame
68 producer
->get_frame
= producer_get_frame
;
70 // Define the destructor
71 producer
->close
= ( mlt_destructor
)mlt_playlist_close
;
72 producer
->close_object
= this;
75 mlt_producer_init( &this->blank
, NULL
);
76 mlt_properties_set( MLT_PRODUCER_PROPERTIES( &this->blank
), "mlt_service", "blank" );
77 mlt_properties_set( MLT_PRODUCER_PROPERTIES( &this->blank
), "resource", "blank" );
79 // Indicate that this producer is a playlist
80 mlt_properties_set_data( MLT_PLAYLIST_PROPERTIES( this ), "playlist", this, 0, NULL
, NULL
);
82 // Specify the eof condition
83 mlt_properties_set( MLT_PLAYLIST_PROPERTIES( this ), "eof", "pause" );
84 mlt_properties_set( MLT_PLAYLIST_PROPERTIES( this ), "resource", "<playlist>" );
85 mlt_properties_set( MLT_PLAYLIST_PROPERTIES( this ), "mlt_type", "mlt_producer" );
86 mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( this ), "in", 0 );
87 mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( this ), "out", -1 );
88 mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( this ), "length", 0 );
91 this->list
= malloc( this->size
* sizeof( playlist_entry
* ) );
97 /** Get the producer associated to this playlist.
100 mlt_producer
mlt_playlist_producer( mlt_playlist
this )
102 return this != NULL ?
&this->parent
: NULL
;
105 /** Get the service associated to this playlist.
108 mlt_service
mlt_playlist_service( mlt_playlist
this )
110 return MLT_PRODUCER_SERVICE( &this->parent
);
113 /** Get the propertues associated to this playlist.
116 mlt_properties
mlt_playlist_properties( mlt_playlist
this )
118 return MLT_PRODUCER_PROPERTIES( &this->parent
);
121 /** Refresh the playlist after a clip has been changed.
124 static int mlt_playlist_virtual_refresh( mlt_playlist
this )
126 // Obtain the properties
127 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
129 mlt_position frame_count
= 0;
131 for ( i
= 0; i
< this->count
; i
++ )
134 mlt_producer producer
= this->list
[ i
]->producer
;
135 int current_length
= mlt_producer_get_out( producer
) - mlt_producer_get_in( producer
) + 1;
137 // Check if the length of the producer has changed
138 if ( this->list
[ i
]->frame_in
!= mlt_producer_get_in( producer
) ||
139 this->list
[ i
]->frame_out
!= mlt_producer_get_out( producer
) )
141 // This clip should be removed...
142 if ( current_length
< 1 )
144 this->list
[ i
]->frame_in
= 0;
145 this->list
[ i
]->frame_out
= -1;
146 this->list
[ i
]->frame_count
= 0;
150 this->list
[ i
]->frame_in
= mlt_producer_get_in( producer
);
151 this->list
[ i
]->frame_out
= mlt_producer_get_out( producer
);
152 this->list
[ i
]->frame_count
= current_length
;
155 // Update the producer_length
156 this->list
[ i
]->producer_length
= current_length
;
159 // Calculate the frame_count
160 this->list
[ i
]->frame_count
= ( this->list
[ i
]->frame_out
- this->list
[ i
]->frame_in
+ 1 ) * this->list
[ i
]->repeat
;
162 // Update the frame_count for this clip
163 frame_count
+= this->list
[ i
]->frame_count
;
166 // Refresh all properties
167 mlt_events_block( properties
, properties
);
168 mlt_properties_set_position( properties
, "length", frame_count
);
169 mlt_events_unblock( properties
, properties
);
170 mlt_properties_set_position( properties
, "out", frame_count
- 1 );
175 /** Listener for producers on the playlist.
178 static void mlt_playlist_listener( mlt_producer producer
, mlt_playlist
this )
180 mlt_playlist_virtual_refresh( this );
183 /** Append to the virtual playlist.
186 static int mlt_playlist_virtual_append( mlt_playlist
this, mlt_producer source
, mlt_position in
, mlt_position out
)
188 mlt_producer producer
= NULL
;
189 mlt_properties properties
= NULL
;
190 mlt_properties parent
= NULL
;
192 // If we have a cut, then use the in/out points from the cut
193 if ( mlt_producer_is_blank( source
) )
195 // Make sure the blank is long enough to accomodate the length specified
196 if ( out
- in
+ 1 > mlt_producer_get_length( &this->blank
) )
198 mlt_properties blank_props
= MLT_PRODUCER_PROPERTIES( &this->blank
);
199 mlt_events_block( blank_props
, blank_props
);
200 mlt_producer_set_in_and_out( &this->blank
, in
, out
);
201 mlt_events_unblock( blank_props
, blank_props
);
204 // Now make sure the cut comes from this this->blank
205 if ( source
== NULL
)
207 producer
= mlt_producer_cut( &this->blank
, in
, out
);
209 else if ( !mlt_producer_is_cut( source
) || mlt_producer_cut_parent( source
) != &this->blank
)
211 producer
= mlt_producer_cut( &this->blank
, in
, out
);
216 mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer
) );
219 properties
= MLT_PRODUCER_PROPERTIES( producer
);
221 else if ( mlt_producer_is_cut( source
) )
225 in
= mlt_producer_get_in( producer
);
226 if ( out
== -1 || out
> mlt_producer_get_out( producer
) )
227 out
= mlt_producer_get_out( producer
);
228 properties
= MLT_PRODUCER_PROPERTIES( producer
);
229 mlt_properties_inc_ref( properties
);
233 producer
= mlt_producer_cut( source
, in
, out
);
234 if ( in
== -1 || in
< mlt_producer_get_in( producer
) )
235 in
= mlt_producer_get_in( producer
);
236 if ( out
== -1 || out
> mlt_producer_get_out( producer
) )
237 out
= mlt_producer_get_out( producer
);
238 properties
= MLT_PRODUCER_PROPERTIES( producer
);
241 // Fetch the cuts parent properties
242 parent
= MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( producer
) );
244 // Remove fezzik normalisers for fx cuts
245 if ( mlt_properties_get_int( parent
, "meta.fx_cut" ) )
247 mlt_service service
= MLT_PRODUCER_SERVICE( mlt_producer_cut_parent( producer
) );
248 mlt_filter filter
= mlt_service_filter( service
, 0 );
249 while ( filter
!= NULL
&& mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter
), "_fezzik" ) )
251 mlt_service_detach( service
, filter
);
252 filter
= mlt_service_filter( service
, 0 );
254 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( producer
), "meta.fx_cut", 1 );
257 // Check that we have room
258 if ( this->count
>= this->size
)
261 this->list
= realloc( this->list
, ( this->size
+ 10 ) * sizeof( playlist_entry
* ) );
262 for ( i
= this->size
; i
< this->size
+ 10; i
++ ) this->list
[ i
] = NULL
;
267 this->list
[ this->count
] = calloc( sizeof( playlist_entry
), 1 );
268 if ( this->list
[ this->count
] != NULL
)
270 this->list
[ this->count
]->producer
= producer
;
271 this->list
[ this->count
]->frame_in
= in
;
272 this->list
[ this->count
]->frame_out
= out
;
273 this->list
[ this->count
]->frame_count
= out
- in
+ 1;
274 this->list
[ this->count
]->repeat
= 1;
275 this->list
[ this->count
]->producer_length
= mlt_producer_get_out( producer
) - mlt_producer_get_in( producer
) + 1;
276 this->list
[ this->count
]->event
= mlt_events_listen( parent
, this, "producer-changed", ( mlt_listener
)mlt_playlist_listener
);
277 mlt_event_inc_ref( this->list
[ this->count
]->event
);
278 mlt_properties_set( properties
, "eof", "pause" );
279 mlt_producer_set_speed( producer
, 0 );
283 return mlt_playlist_virtual_refresh( this );
286 static mlt_producer
mlt_playlist_locate( mlt_playlist
this, mlt_position
*position
, int *clip
, int *total
)
288 // Default producer to NULL
289 mlt_producer producer
= NULL
;
291 // Loop for each producer until found
292 for ( *clip
= 0; *clip
< this->count
; *clip
+= 1 )
294 // Increment the total
295 *total
+= this->list
[ *clip
]->frame_count
;
297 // Check if the position indicates that we have found the clip
298 // Note that 0 length clips get skipped automatically
299 if ( *position
< this->list
[ *clip
]->frame_count
)
301 // Found it, now break
302 producer
= this->list
[ *clip
]->producer
;
307 // Decrement position by length of this entry
308 *position
-= this->list
[ *clip
]->frame_count
;
315 /** Seek in the virtual playlist.
318 static mlt_service
mlt_playlist_virtual_seek( mlt_playlist
this, int *progressive
)
320 // Map playlist position to real producer in virtual playlist
321 mlt_position position
= mlt_producer_frame( &this->parent
);
323 // Keep the original position since we change it while iterating through the list
324 mlt_position original
= position
;
326 // Clip index and total
330 // Locate the producer for the position
331 mlt_producer producer
= mlt_playlist_locate( this, &position
, &i
, &total
);
333 // Get the properties
334 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
336 // Get the eof handling
337 char *eof
= mlt_properties_get( properties
, "eof" );
339 // Seek in real producer to relative position
340 if ( producer
!= NULL
)
342 int count
= this->list
[ i
]->frame_count
/ this->list
[ i
]->repeat
;
343 *progressive
= count
== 1;
344 mlt_producer_seek( producer
, (int)position
% count
);
346 else if ( !strcmp( eof
, "pause" ) && total
> 0 )
348 playlist_entry
*entry
= this->list
[ this->count
- 1 ];
349 int count
= entry
->frame_count
/ entry
->repeat
;
350 mlt_producer this_producer
= MLT_PLAYLIST_PRODUCER( this );
351 mlt_producer_seek( this_producer
, original
- 1 );
352 producer
= entry
->producer
;
353 mlt_producer_seek( producer
, (int)entry
->frame_out
% count
);
354 mlt_producer_set_speed( this_producer
, 0 );
355 mlt_producer_set_speed( producer
, 0 );
356 *progressive
= count
== 1;
358 else if ( !strcmp( eof
, "loop" ) && total
> 0 )
360 playlist_entry
*entry
= this->list
[ 0 ];
361 mlt_producer this_producer
= MLT_PLAYLIST_PRODUCER( this );
362 mlt_producer_seek( this_producer
, 0 );
363 producer
= entry
->producer
;
364 mlt_producer_seek( producer
, 0 );
368 producer
= &this->blank
;
371 return MLT_PRODUCER_SERVICE( producer
);
374 /** Invoked when a producer indicates that it has prematurely reached its end.
377 static mlt_producer
mlt_playlist_virtual_set_out( mlt_playlist
this )
379 // Default producer to blank
380 mlt_producer producer
= &this->blank
;
382 // Map playlist position to real producer in virtual playlist
383 mlt_position position
= mlt_producer_frame( &this->parent
);
385 // Loop through the virtual playlist
388 for ( i
= 0; i
< this->count
; i
++ )
390 if ( position
< this->list
[ i
]->frame_count
)
392 // Found it, now break
393 producer
= this->list
[ i
]->producer
;
398 // Decrement position by length of this entry
399 position
-= this->list
[ i
]->frame_count
;
403 // Seek in real producer to relative position
404 if ( i
< this->count
&& this->list
[ i
]->frame_out
!= position
)
406 // Update the frame_count for the changed clip (hmmm)
407 this->list
[ i
]->frame_out
= position
;
408 this->list
[ i
]->frame_count
= this->list
[ i
]->frame_out
- this->list
[ i
]->frame_in
+ 1;
410 // Refresh the playlist
411 mlt_playlist_virtual_refresh( this );
417 /** Obtain the current clips index.
420 int mlt_playlist_current_clip( mlt_playlist
this )
422 // Map playlist position to real producer in virtual playlist
423 mlt_position position
= mlt_producer_frame( &this->parent
);
425 // Loop through the virtual playlist
428 for ( i
= 0; i
< this->count
; i
++ )
430 if ( position
< this->list
[ i
]->frame_count
)
432 // Found it, now break
437 // Decrement position by length of this entry
438 position
-= this->list
[ i
]->frame_count
;
445 /** Obtain the current clips producer.
448 mlt_producer
mlt_playlist_current( mlt_playlist
this )
450 int i
= mlt_playlist_current_clip( this );
451 if ( i
< this->count
)
452 return this->list
[ i
]->producer
;
457 /** Get the position which corresponds to the start of the next clip.
460 mlt_position
mlt_playlist_clip( mlt_playlist
this, mlt_whence whence
, int index
)
462 mlt_position position
= 0;
463 int absolute_clip
= index
;
466 // Determine the absolute clip
469 case mlt_whence_relative_start
:
470 absolute_clip
= index
;
473 case mlt_whence_relative_current
:
474 absolute_clip
= mlt_playlist_current_clip( this ) + index
;
477 case mlt_whence_relative_end
:
478 absolute_clip
= this->count
- index
;
482 // Check that we're in a valid range
483 if ( absolute_clip
< 0 )
485 else if ( absolute_clip
> this->count
)
486 absolute_clip
= this->count
;
488 // Now determine the position
489 for ( i
= 0; i
< absolute_clip
; i
++ )
490 position
+= this->list
[ i
]->frame_count
;
495 /** Get all the info about the clip specified.
498 int mlt_playlist_get_clip_info( mlt_playlist
this, mlt_playlist_clip_info
*info
, int index
)
500 int error
= index
< 0 || index
>= this->count
;
501 memset( info
, 0, sizeof( mlt_playlist_clip_info
) );
504 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ index
]->producer
);
505 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
507 info
->producer
= producer
;
508 info
->cut
= this->list
[ index
]->producer
;
509 info
->start
= mlt_playlist_clip( this, mlt_whence_relative_start
, index
);
510 info
->resource
= mlt_properties_get( properties
, "resource" );
511 info
->frame_in
= this->list
[ index
]->frame_in
;
512 info
->frame_out
= this->list
[ index
]->frame_out
;
513 info
->frame_count
= this->list
[ index
]->frame_count
;
514 info
->repeat
= this->list
[ index
]->repeat
;
515 info
->length
= mlt_producer_get_length( producer
);
516 info
->fps
= mlt_producer_get_fps( producer
);
522 /** Get number of clips in the playlist.
525 int mlt_playlist_count( mlt_playlist
this )
530 /** Clear the playlist.
533 int mlt_playlist_clear( mlt_playlist
this )
536 for ( i
= 0; i
< this->count
; i
++ )
538 mlt_event_close( this->list
[ i
]->event
);
539 mlt_producer_close( this->list
[ i
]->producer
);
542 return mlt_playlist_virtual_refresh( this );
545 /** Append a producer to the playlist.
548 int mlt_playlist_append( mlt_playlist
this, mlt_producer producer
)
550 // Append to virtual list
551 return mlt_playlist_virtual_append( this, producer
, 0, mlt_producer_get_playtime( producer
) - 1 );
554 /** Append a producer to the playlist with in/out points.
557 int mlt_playlist_append_io( mlt_playlist
this, mlt_producer producer
, mlt_position in
, mlt_position out
)
559 // Append to virtual list
560 if ( in
!= -1 && out
!= -1 )
561 return mlt_playlist_virtual_append( this, producer
, in
, out
);
563 return mlt_playlist_append( this, producer
);
566 /** Append a blank to the playlist of a given length.
569 int mlt_playlist_blank( mlt_playlist
this, mlt_position length
)
571 // Append to the virtual list
572 return mlt_playlist_virtual_append( this, &this->blank
, 0, length
);
575 /** Insert a producer into the playlist.
578 int mlt_playlist_insert( mlt_playlist
this, mlt_producer producer
, int where
, mlt_position in
, mlt_position out
)
581 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
582 mlt_playlist_append_io( this, producer
, in
, out
);
584 // Move to the position specified
585 mlt_playlist_move( this, this->count
- 1, where
);
586 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
588 return mlt_playlist_virtual_refresh( this );
591 /** Remove an entry in the playlist.
594 int mlt_playlist_remove( mlt_playlist
this, int where
)
596 int error
= where
< 0 || where
>= this->count
;
597 if ( error
== 0 && mlt_playlist_unmix( this, where
) != 0 )
599 // We need to know the current clip and the position within the playlist
600 int current
= mlt_playlist_current_clip( this );
601 mlt_position position
= mlt_producer_position( MLT_PLAYLIST_PRODUCER( this ) );
603 // We need all the details about the clip we're removing
604 mlt_playlist_clip_info where_info
;
605 playlist_entry
*entry
= this->list
[ where
];
606 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( entry
->producer
);
612 mlt_playlist_get_clip_info( this, &where_info
, where
);
614 // Make sure the clip to be removed is valid and correct if necessary
617 if ( where
>= this->count
)
618 where
= this->count
- 1;
620 // Reorganise the list
621 for ( i
= where
+ 1; i
< this->count
; i
++ )
622 this->list
[ i
- 1 ] = this->list
[ i
];
625 if ( entry
->preservation_hack
== 0 )
627 // Decouple from mix_in/out if necessary
628 if ( mlt_properties_get_data( properties
, "mix_in", NULL
) != NULL
)
630 mlt_properties mix
= mlt_properties_get_data( properties
, "mix_in", NULL
);
631 mlt_properties_set_data( mix
, "mix_out", NULL
, 0, NULL
, NULL
);
633 if ( mlt_properties_get_data( properties
, "mix_out", NULL
) != NULL
)
635 mlt_properties mix
= mlt_properties_get_data( properties
, "mix_out", NULL
);
636 mlt_properties_set_data( mix
, "mix_in", NULL
, 0, NULL
, NULL
);
639 if ( mlt_properties_ref_count( MLT_PRODUCER_PROPERTIES( entry
->producer
) ) == 1 )
640 mlt_producer_clear( entry
->producer
);
643 // Close the producer associated to the clip info
644 mlt_event_close( entry
->event
);
645 mlt_producer_close( entry
->producer
);
648 if ( where
== current
)
649 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), where_info
.start
);
650 else if ( where
< current
&& this->count
> 0 )
651 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), position
- where_info
.frame_count
);
652 else if ( this->count
== 0 )
653 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), 0 );
658 // Refresh the playlist
659 mlt_playlist_virtual_refresh( this );
665 /** Move an entry in the playlist.
668 int mlt_playlist_move( mlt_playlist
this, int src
, int dest
)
672 /* We need to ensure that the requested indexes are valid and correct it as necessary */
675 if ( src
>= this->count
)
676 src
= this->count
- 1;
680 if ( dest
>= this->count
)
681 dest
= this->count
- 1;
683 if ( src
!= dest
&& this->count
> 1 )
685 int current
= mlt_playlist_current_clip( this );
686 mlt_position position
= mlt_producer_position( MLT_PLAYLIST_PRODUCER( this ) );
687 playlist_entry
*src_entry
= NULL
;
689 // We need all the details about the current clip
690 mlt_playlist_clip_info current_info
;
692 mlt_playlist_get_clip_info( this, ¤t_info
, current
);
693 position
-= current_info
.start
;
695 if ( current
== src
)
697 else if ( current
> src
&& current
< dest
)
699 else if ( current
== dest
)
702 src_entry
= this->list
[ src
];
705 for ( i
= src
; i
> dest
; i
-- )
706 this->list
[ i
] = this->list
[ i
- 1 ];
710 for ( i
= src
; i
< dest
; i
++ )
711 this->list
[ i
] = this->list
[ i
+ 1 ];
713 this->list
[ dest
] = src_entry
;
715 mlt_playlist_get_clip_info( this, ¤t_info
, current
);
716 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), current_info
.start
+ position
);
717 mlt_playlist_virtual_refresh( this );
723 /** Repeat the specified clip n times.
726 int mlt_playlist_repeat_clip( mlt_playlist
this, int clip
, int repeat
)
728 int error
= repeat
< 1 || clip
< 0 || clip
>= this->count
;
731 playlist_entry
*entry
= this->list
[ clip
];
732 entry
->repeat
= repeat
;
733 mlt_playlist_virtual_refresh( this );
738 /** Resize the specified clip.
741 int mlt_playlist_resize_clip( mlt_playlist
this, int clip
, mlt_position in
, mlt_position out
)
743 int error
= clip
< 0 || clip
>= this->count
;
744 if ( error
== 0 && mlt_playlist_resize_mix( this, clip
, in
, out
) != 0 )
746 playlist_entry
*entry
= this->list
[ clip
];
747 mlt_producer producer
= entry
->producer
;
748 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
750 mlt_events_block( properties
, properties
);
752 if ( mlt_producer_is_blank( producer
) )
754 // Make sure the blank is long enough to accomodate the length specified
755 if ( out
- in
+ 1 > mlt_producer_get_length( &this->blank
) )
757 mlt_properties blank_props
= MLT_PRODUCER_PROPERTIES( &this->blank
);
758 mlt_properties_set_int( blank_props
, "length", out
- in
+ 1 );
759 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( producer
), "length", out
- in
+ 1 );
760 mlt_producer_set_in_and_out( &this->blank
, 0, out
- in
);
766 if ( out
<= -1 || out
>= mlt_producer_get_length( producer
) )
767 out
= mlt_producer_get_length( producer
) - 1;
776 mlt_producer_set_in_and_out( producer
, in
, out
);
777 mlt_events_unblock( properties
, properties
);
778 mlt_playlist_virtual_refresh( this );
783 /** Split a clip on the playlist at the given position.
786 int mlt_playlist_split( mlt_playlist
this, int clip
, mlt_position position
)
788 int error
= clip
< 0 || clip
>= this->count
;
791 playlist_entry
*entry
= this->list
[ clip
];
792 position
= position
< 0 ? entry
->frame_count
+ position
- 1 : position
;
793 if ( position
>= 0 && position
< entry
->frame_count
- 1 )
795 int in
= entry
->frame_in
;
796 int out
= entry
->frame_out
;
797 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
798 mlt_playlist_resize_clip( this, clip
, in
, in
+ position
);
799 if ( !mlt_producer_is_blank( entry
->producer
) )
802 mlt_properties entry_properties
= MLT_PRODUCER_PROPERTIES( entry
->producer
);
803 mlt_producer split
= mlt_producer_cut( entry
->producer
, in
+ position
+ 1, out
);
804 mlt_properties split_properties
= MLT_PRODUCER_PROPERTIES( split
);
805 mlt_playlist_insert( this, split
, clip
+ 1, 0, -1 );
806 for ( i
= 0; i
< mlt_properties_count( entry_properties
); i
++ )
808 char *name
= mlt_properties_get_name( entry_properties
, i
);
809 if ( name
!= NULL
&& !strncmp( name
, "meta.", 5 ) )
810 mlt_properties_set( split_properties
, name
, mlt_properties_get_value( entry_properties
, i
) );
812 mlt_producer_close( split
);
816 mlt_playlist_insert( this, &this->blank
, clip
+ 1, 0, out
- position
- 1 );
818 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
819 mlt_playlist_virtual_refresh( this );
829 /** Split the playlist at the absolute position.
832 int mlt_playlist_split_at( mlt_playlist
this, mlt_position position
, int left
)
834 int result
= this == NULL ?
-1 : 0;
837 if ( position
>= 0 && position
< mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) ) )
839 int clip
= mlt_playlist_get_clip_index_at( this, position
);
840 mlt_playlist_clip_info info
;
841 mlt_playlist_get_clip_info( this, &info
, clip
);
842 if ( left
&& position
!= info
.start
)
843 mlt_playlist_split( this, clip
, position
- info
.start
- 1 );
845 mlt_playlist_split( this, clip
, position
- info
.start
);
848 else if ( position
<= 0 )
854 result
= mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
860 /** Join 1 or more consecutive clips.
863 int mlt_playlist_join( mlt_playlist
this, int clip
, int count
, int merge
)
865 int error
= clip
< 0 || clip
>= this->count
;
869 mlt_playlist new_clip
= mlt_playlist_init( );
870 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
871 if ( clip
+ count
>= this->count
)
872 count
= this->count
- clip
- 1;
873 for ( i
= 0; i
<= count
; i
++ )
875 playlist_entry
*entry
= this->list
[ clip
];
876 mlt_playlist_append( new_clip
, entry
->producer
);
877 mlt_playlist_repeat_clip( new_clip
, i
, entry
->repeat
);
878 entry
->preservation_hack
= 1;
879 mlt_playlist_remove( this, clip
);
881 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
882 mlt_playlist_insert( this, MLT_PLAYLIST_PRODUCER( new_clip
), clip
, 0, -1 );
883 mlt_playlist_close( new_clip
);
888 /** Mix consecutive clips for a specified length and apply transition if specified.
891 int mlt_playlist_mix( mlt_playlist
this, int clip
, int length
, mlt_transition transition
)
893 int error
= ( clip
< 0 || clip
+ 1 >= this->count
);
896 playlist_entry
*clip_a
= this->list
[ clip
];
897 playlist_entry
*clip_b
= this->list
[ clip
+ 1 ];
898 mlt_producer track_a
= NULL
;
899 mlt_producer track_b
= NULL
;
900 mlt_tractor tractor
= mlt_tractor_new( );
901 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
903 // Check length is valid for both clips and resize if necessary.
904 int max_size
= clip_a
->frame_count
> clip_b
->frame_count ? clip_a
->frame_count
: clip_b
->frame_count
;
905 length
= length
> max_size ? max_size
: length
;
907 // Create the a and b tracks/cuts if necessary - note that no cuts are required if the length matches
908 if ( length
!= clip_a
->frame_count
)
909 track_a
= mlt_producer_cut( clip_a
->producer
, clip_a
->frame_out
- length
+ 1, clip_a
->frame_out
);
911 track_a
= clip_a
->producer
;
913 if ( length
!= clip_b
->frame_count
)
914 track_b
= mlt_producer_cut( clip_b
->producer
, clip_b
->frame_in
, clip_b
->frame_in
+ length
- 1 );
916 track_b
= clip_b
->producer
;
918 // Set the tracks on the tractor
919 mlt_tractor_set_track( tractor
, track_a
, 0 );
920 mlt_tractor_set_track( tractor
, track_b
, 1 );
922 // Insert the mix object into the playlist
923 mlt_playlist_insert( this, MLT_TRACTOR_PRODUCER( tractor
), clip
+ 1, -1, -1 );
924 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mlt_mix", tractor
, 0, NULL
, NULL
);
926 // Attach the transition
927 if ( transition
!= NULL
)
929 mlt_field field
= mlt_tractor_field( tractor
);
930 mlt_field_plant_transition( field
, transition
, 0, 1 );
931 mlt_transition_set_in_and_out( transition
, 0, length
- 1 );
934 // Close our references to the tracks if we created new cuts above (the tracks can still be used here)
935 if ( track_a
!= clip_a
->producer
)
936 mlt_producer_close( track_a
);
937 if ( track_b
!= clip_b
->producer
)
938 mlt_producer_close( track_b
);
940 // Check if we have anything left on the right hand clip
941 if ( track_b
== clip_b
->producer
)
943 clip_b
->preservation_hack
= 1;
944 mlt_playlist_remove( this, clip
+ 2 );
946 else if ( clip_b
->frame_out
- clip_b
->frame_in
> length
)
948 mlt_playlist_resize_clip( this, clip
+ 2, clip_b
->frame_in
+ length
, clip_b
->frame_out
);
949 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_b
->producer
), "mix_in", tractor
, 0, NULL
, NULL
);
950 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mix_out", clip_b
->producer
, 0, NULL
, NULL
);
954 mlt_producer_clear( clip_b
->producer
);
955 mlt_playlist_remove( this, clip
+ 2 );
958 // Check if we have anything left on the left hand clip
959 if ( track_a
== clip_a
->producer
)
961 clip_a
->preservation_hack
= 1;
962 mlt_playlist_remove( this, clip
);
964 else if ( clip_a
->frame_out
- clip_a
->frame_in
> length
)
966 mlt_playlist_resize_clip( this, clip
, clip_a
->frame_in
, clip_a
->frame_out
- length
);
967 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_a
->producer
), "mix_out", tractor
, 0, NULL
, NULL
);
968 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mix_in", clip_a
->producer
, 0, NULL
, NULL
);
972 mlt_producer_clear( clip_a
->producer
);
973 mlt_playlist_remove( this, clip
);
976 // Unblock and force a fire off of change events to listeners
977 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
978 mlt_playlist_virtual_refresh( this );
979 mlt_tractor_close( tractor
);
984 /** Add a transition to an existing mix.
987 int mlt_playlist_mix_add( mlt_playlist
this, int clip
, mlt_transition transition
)
989 mlt_producer producer
= mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip
) );
990 mlt_properties properties
= producer
!= NULL ?
MLT_PRODUCER_PROPERTIES( producer
) : NULL
;
991 mlt_tractor tractor
= properties
!= NULL ?
mlt_properties_get_data( properties
, "mlt_mix", NULL
) : NULL
;
992 int error
= transition
== NULL
|| tractor
== NULL
;
995 mlt_field field
= mlt_tractor_field( tractor
);
996 mlt_field_plant_transition( field
, transition
, 0, 1 );
997 mlt_transition_set_in_and_out( transition
, 0, this->list
[ clip
]->frame_count
- 1 );
1002 /** Return the clip at the clip index.
1005 mlt_producer
mlt_playlist_get_clip( mlt_playlist
this, int clip
)
1007 if ( clip
>= 0 && clip
< this->count
)
1008 return this->list
[ clip
]->producer
;
1012 /** Return the clip at the specified position.
1015 mlt_producer
mlt_playlist_get_clip_at( mlt_playlist
this, mlt_position position
)
1017 int index
= 0, total
= 0;
1018 return mlt_playlist_locate( this, &position
, &index
, &total
);
1021 /** Return the clip index of the specified position.
1024 int mlt_playlist_get_clip_index_at( mlt_playlist
this, mlt_position position
)
1026 int index
= 0, total
= 0;
1027 mlt_playlist_locate( this, &position
, &index
, &total
);
1031 /** Determine if the clip is a mix.
1034 int mlt_playlist_clip_is_mix( mlt_playlist
this, int clip
)
1036 mlt_producer producer
= mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip
) );
1037 mlt_properties properties
= producer
!= NULL ?
MLT_PRODUCER_PROPERTIES( producer
) : NULL
;
1038 mlt_tractor tractor
= properties
!= NULL ?
mlt_properties_get_data( properties
, "mlt_mix", NULL
) : NULL
;
1039 return tractor
!= NULL
;
1042 /** Remove a mixed clip - ensure that the cuts included in the mix find their way
1043 back correctly on to the playlist.
1046 static int mlt_playlist_unmix( mlt_playlist
this, int clip
)
1048 int error
= ( clip
< 0 || clip
>= this->count
);
1050 // Ensure that the clip request is actually a mix
1053 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ clip
]->producer
);
1054 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
1055 error
= mlt_properties_get_data( properties
, "mlt_mix", NULL
) == NULL
||
1056 this->list
[ clip
]->preservation_hack
;
1061 playlist_entry
*mix
= this->list
[ clip
];
1062 mlt_tractor tractor
= ( mlt_tractor
)mlt_producer_cut_parent( mix
->producer
);
1063 mlt_properties properties
= MLT_TRACTOR_PROPERTIES( tractor
);
1064 mlt_producer clip_a
= mlt_properties_get_data( properties
, "mix_in", NULL
);
1065 mlt_producer clip_b
= mlt_properties_get_data( properties
, "mix_out", NULL
);
1066 int length
= mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor
) );
1067 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
1069 if ( clip_a
!= NULL
)
1071 mlt_producer_set_in_and_out( clip_a
, mlt_producer_get_in( clip_a
), mlt_producer_get_out( clip_a
) + length
);
1075 mlt_producer cut
= mlt_tractor_get_track( tractor
, 0 );
1076 mlt_playlist_insert( this, cut
, clip
, -1, -1 );
1080 if ( clip_b
!= NULL
)
1082 mlt_producer_set_in_and_out( clip_b
, mlt_producer_get_in( clip_b
) - length
, mlt_producer_get_out( clip_b
) );
1086 mlt_producer cut
= mlt_tractor_get_track( tractor
, 1 );
1087 mlt_playlist_insert( this, cut
, clip
+ 1, -1, -1 );
1090 mlt_properties_set_data( properties
, "mlt_mix", NULL
, 0, NULL
, NULL
);
1091 mlt_playlist_remove( this, clip
);
1092 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1093 mlt_playlist_virtual_refresh( this );
1098 static int mlt_playlist_resize_mix( mlt_playlist
this, int clip
, int in
, int out
)
1100 int error
= ( clip
< 0 || clip
>= this->count
);
1102 // Ensure that the clip request is actually a mix
1105 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ clip
]->producer
);
1106 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
1107 error
= mlt_properties_get_data( properties
, "mlt_mix", NULL
) == NULL
;
1112 playlist_entry
*mix
= this->list
[ clip
];
1113 mlt_tractor tractor
= ( mlt_tractor
)mlt_producer_cut_parent( mix
->producer
);
1114 mlt_properties properties
= MLT_TRACTOR_PROPERTIES( tractor
);
1115 mlt_producer clip_a
= mlt_properties_get_data( properties
, "mix_in", NULL
);
1116 mlt_producer clip_b
= mlt_properties_get_data( properties
, "mix_out", NULL
);
1117 mlt_producer track_a
= mlt_tractor_get_track( tractor
, 0 );
1118 mlt_producer track_b
= mlt_tractor_get_track( tractor
, 1 );
1119 int length
= out
- in
+ 1;
1120 int length_diff
= length
- mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor
) );
1121 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
1123 if ( clip_a
!= NULL
)
1124 mlt_producer_set_in_and_out( clip_a
, mlt_producer_get_in( clip_a
), mlt_producer_get_out( clip_a
) - length_diff
);
1126 if ( clip_b
!= NULL
)
1127 mlt_producer_set_in_and_out( clip_b
, mlt_producer_get_in( clip_b
) + length_diff
, mlt_producer_get_out( clip_b
) );
1129 mlt_producer_set_in_and_out( track_a
, mlt_producer_get_in( track_a
) - length_diff
, mlt_producer_get_out( track_a
) );
1130 mlt_producer_set_in_and_out( track_b
, mlt_producer_get_in( track_b
), mlt_producer_get_out( track_b
) + length_diff
);
1131 mlt_producer_set_in_and_out( MLT_MULTITRACK_PRODUCER( mlt_tractor_multitrack( tractor
) ), in
, out
);
1132 mlt_producer_set_in_and_out( MLT_TRACTOR_PRODUCER( tractor
), in
, out
);
1133 mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( mix
->producer
), "length", out
- in
+ 1 );
1134 mlt_producer_set_in_and_out( mix
->producer
, in
, out
);
1136 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1137 mlt_playlist_virtual_refresh( this );
1142 /** Consolodate adjacent blank producers.
1145 void mlt_playlist_consolidate_blanks( mlt_playlist
this, int keep_length
)
1150 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1152 mlt_events_block( properties
, properties
);
1153 for ( i
= 1; i
< this->count
; i
++ )
1155 playlist_entry
*left
= this->list
[ i
- 1 ];
1156 playlist_entry
*right
= this->list
[ i
];
1158 if ( mlt_producer_is_blank( left
->producer
) && mlt_producer_is_blank( right
->producer
) )
1160 mlt_playlist_resize_clip( this, i
- 1, 0, left
->frame_count
+ right
->frame_count
- 1 );
1161 mlt_playlist_remove( this, i
-- );
1165 if ( !keep_length
&& this->count
> 0 )
1167 playlist_entry
*last
= this->list
[ this->count
- 1 ];
1168 if ( mlt_producer_is_blank( last
->producer
) )
1169 mlt_playlist_remove( this, this->count
- 1 );
1172 mlt_events_unblock( properties
, properties
);
1173 mlt_playlist_virtual_refresh( this );
1177 /** Determine if the specified clip index is a blank.
1180 int mlt_playlist_is_blank( mlt_playlist
this, int clip
)
1182 return this == NULL
|| mlt_producer_is_blank( mlt_playlist_get_clip( this, clip
) );
1185 /** Determine if the specified position is a blank.
1188 int mlt_playlist_is_blank_at( mlt_playlist
this, mlt_position position
)
1190 return this == NULL
|| mlt_producer_is_blank( mlt_playlist_get_clip_at( this, position
) );
1193 /** Replace the specified clip with a blank and return the clip.
1196 mlt_producer
mlt_playlist_replace_with_blank( mlt_playlist
this, int clip
)
1198 mlt_producer producer
= NULL
;
1199 if ( !mlt_playlist_is_blank( this, clip
) )
1201 playlist_entry
*entry
= this->list
[ clip
];
1202 int in
= entry
->frame_in
;
1203 int out
= entry
->frame_out
;
1204 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1205 producer
= entry
->producer
;
1206 mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer
) );
1207 mlt_events_block( properties
, properties
);
1208 mlt_playlist_remove( this, clip
);
1209 mlt_playlist_blank( this, out
- in
);
1210 mlt_playlist_move( this, this->count
- 1, clip
);
1211 mlt_events_unblock( properties
, properties
);
1212 mlt_playlist_virtual_refresh( this );
1213 mlt_producer_set_in_and_out( producer
, in
, out
);
1218 void mlt_playlist_insert_blank( mlt_playlist
this, int clip
, int length
)
1220 if ( this != NULL
&& length
>= 0 )
1222 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1223 mlt_events_block( properties
, properties
);
1224 mlt_playlist_blank( this, length
);
1225 mlt_playlist_move( this, this->count
- 1, clip
);
1226 mlt_events_unblock( properties
, properties
);
1227 mlt_playlist_virtual_refresh( this );
1231 void mlt_playlist_pad_blanks( mlt_playlist
this, mlt_position position
, int length
, int find
)
1233 if ( this != NULL
&& length
!= 0 )
1235 int clip
= mlt_playlist_get_clip_index_at( this, position
);
1236 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1237 mlt_events_block( properties
, properties
);
1238 if ( find
&& clip
< this->count
&& !mlt_playlist_is_blank( this, clip
) )
1240 if ( clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1242 mlt_playlist_clip_info info
;
1243 mlt_playlist_get_clip_info( this, &info
, clip
);
1244 if ( info
.frame_out
+ length
> info
.frame_in
)
1245 mlt_playlist_resize_clip( this, clip
, info
.frame_in
, info
.frame_out
+ length
);
1247 mlt_playlist_remove( this, clip
);
1249 else if ( find
&& clip
< this->count
&& length
> 0 )
1251 mlt_playlist_insert_blank( this, clip
, length
);
1253 mlt_events_unblock( properties
, properties
);
1254 mlt_playlist_virtual_refresh( this );
1258 int mlt_playlist_insert_at( mlt_playlist
this, mlt_position position
, mlt_producer producer
, int mode
)
1260 int ret
= this == NULL
|| position
< 0 || producer
== NULL
;
1263 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1264 int length
= mlt_producer_get_playtime( producer
);
1265 int clip
= mlt_playlist_get_clip_index_at( this, position
);
1266 mlt_playlist_clip_info info
;
1267 mlt_playlist_get_clip_info( this, &info
, clip
);
1268 mlt_events_block( properties
, this );
1269 if ( clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1271 // Split and move to new clip if need be
1272 if ( position
!= info
.start
&& mlt_playlist_split( this, clip
, position
- info
.start
- 1 ) == 0 )
1273 mlt_playlist_get_clip_info( this, &info
, ++ clip
);
1275 // Split again if need be
1276 if ( length
< info
.frame_count
)
1277 mlt_playlist_split( this, clip
, length
- 1 );
1280 mlt_playlist_remove( this, clip
);
1283 mlt_playlist_insert( this, producer
, clip
, -1, -1 );
1286 else if ( clip
< this->count
)
1288 if ( position
> info
.start
+ info
.frame_count
/ 2 )
1290 if ( mode
== 1 && clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1292 mlt_playlist_get_clip_info( this, &info
, clip
);
1293 if ( length
< info
.frame_count
)
1294 mlt_playlist_split( this, clip
, length
);
1295 mlt_playlist_remove( this, clip
);
1297 mlt_playlist_insert( this, producer
, clip
, -1, -1 );
1303 if ( position
== info
.start
)
1304 mlt_playlist_remove( this, clip
);
1306 mlt_playlist_blank( this, position
- mlt_properties_get_int( properties
, "length" ) - 1 );
1308 mlt_playlist_append( this, producer
);
1309 ret
= this->count
- 1;
1311 mlt_events_unblock( properties
, this );
1312 mlt_playlist_virtual_refresh( this );
1321 int mlt_playlist_clip_start( mlt_playlist
this, int clip
)
1323 mlt_playlist_clip_info info
;
1324 if ( mlt_playlist_get_clip_info( this, &info
, clip
) == 0 )
1326 return clip
< 0 ?
0 : mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
1329 int mlt_playlist_clip_length( mlt_playlist
this, int clip
)
1331 mlt_playlist_clip_info info
;
1332 if ( mlt_playlist_get_clip_info( this, &info
, clip
) == 0 )
1333 return info
.frame_count
;
1337 int mlt_playlist_blanks_from( mlt_playlist
this, int clip
, int bounded
)
1340 mlt_playlist_clip_info info
;
1341 if ( this != NULL
&& clip
< this->count
)
1343 mlt_playlist_get_clip_info( this, &info
, clip
);
1344 if ( mlt_playlist_is_blank( this, clip
) )
1345 count
+= info
.frame_count
;
1347 bounded
= this->count
;
1348 for ( clip
++; clip
< this->count
&& bounded
>= 0; clip
++ )
1350 mlt_playlist_get_clip_info( this, &info
, clip
);
1351 if ( mlt_playlist_is_blank( this, clip
) )
1352 count
+= info
.frame_count
;
1360 int mlt_playlist_remove_region( mlt_playlist
this, mlt_position position
, int length
)
1362 int index
= mlt_playlist_get_clip_index_at( this, position
);
1363 if ( index
>= 0 && index
< this->count
)
1365 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1366 int clip_start
= mlt_playlist_clip_start( this, index
);
1367 int clip_length
= mlt_playlist_clip_length( this, index
);
1368 int list_length
= mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
1369 mlt_events_block( properties
, this );
1371 if ( position
+ length
> list_length
)
1372 length
-= ( position
+ length
- list_length
);
1374 if ( clip_start
< position
)
1376 mlt_playlist_split( this, index
++, position
- clip_start
);
1377 clip_length
-= position
- clip_start
;
1382 if ( mlt_playlist_clip_length( this, index
) > length
)
1383 mlt_playlist_split( this, index
, length
);
1384 length
-= mlt_playlist_clip_length( this, index
);
1385 mlt_playlist_remove( this, index
);
1388 mlt_playlist_consolidate_blanks( this, 0 );
1389 mlt_events_unblock( properties
, this );
1390 mlt_playlist_virtual_refresh( this );
1392 // Just to be sure, we'll get the clip index again...
1393 index
= mlt_playlist_get_clip_index_at( this, position
);
1398 int mlt_playlist_move_region( mlt_playlist
this, mlt_position position
, int length
, int new_position
)
1406 /** Get the current frame.
1409 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
)
1411 // Check that we have a producer
1412 if ( producer
== NULL
)
1418 // Get this mlt_playlist
1419 mlt_playlist
this = producer
->child
;
1421 // Need to ensure the frame is deinterlaced when repeating 1 frame
1422 int progressive
= 0;
1424 // Get the real producer
1425 mlt_service real
= mlt_playlist_virtual_seek( this, &progressive
);
1427 // Check that we have a producer
1430 *frame
= mlt_frame_init( MLT_PRODUCER_SERVICE( producer
) );
1435 if ( !mlt_properties_get_int( MLT_SERVICE_PROPERTIES( real
), "meta.fx_cut" ) )
1437 mlt_service_get_frame( real
, frame
, index
);
1441 mlt_producer parent
= mlt_producer_cut_parent( ( mlt_producer
)real
);
1442 *frame
= mlt_frame_init( MLT_PRODUCER_SERVICE( parent
) );
1443 mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame
), "fx_cut", 1 );
1444 mlt_frame_push_service( *frame
, NULL
);
1445 mlt_frame_push_audio( *frame
, NULL
);
1446 mlt_service_apply_filters( MLT_PRODUCER_SERVICE( parent
), *frame
, 0 );
1447 mlt_service_apply_filters( real
, *frame
, 0 );
1448 mlt_deque_pop_front( MLT_FRAME_IMAGE_STACK( *frame
) );
1449 mlt_deque_pop_front( MLT_FRAME_AUDIO_STACK( *frame
) );
1452 // Check if we're at the end of the clip
1453 mlt_properties properties
= MLT_FRAME_PROPERTIES( *frame
);
1454 if ( mlt_properties_get_int( properties
, "end_of_clip" ) )
1455 mlt_playlist_virtual_set_out( this );
1457 // Set the consumer progressive property
1460 mlt_properties_set_int( properties
, "consumer_deinterlace", progressive
);
1461 mlt_properties_set_int( properties
, "test_audio", 1 );
1464 // Check for notifier and call with appropriate argument
1465 mlt_properties playlist_properties
= MLT_PRODUCER_PROPERTIES( producer
);
1466 void ( *notifier
)( void * ) = mlt_properties_get_data( playlist_properties
, "notifier", NULL
);
1467 if ( notifier
!= NULL
)
1469 void *argument
= mlt_properties_get_data( playlist_properties
, "notifier_arg", NULL
);
1470 notifier( argument
);
1473 // Update position on the frame we're creating
1474 mlt_frame_set_position( *frame
, mlt_producer_frame( producer
) );
1476 // Position ourselves on the next frame
1477 mlt_producer_prepare_next( producer
);
1482 /** Close the playlist.
1485 void mlt_playlist_close( mlt_playlist
this )
1487 if ( this != NULL
&& mlt_properties_dec_ref( MLT_PLAYLIST_PROPERTIES( this ) ) <= 0 )
1490 this->parent
.close
= NULL
;
1491 for ( i
= 0; i
< this->count
; i
++ )
1493 mlt_event_close( this->list
[ i
]->event
);
1494 mlt_producer_close( this->list
[ i
]->producer
);
1495 free( this->list
[ i
] );
1497 mlt_producer_close( &this->blank
);
1498 mlt_producer_close( &this->parent
);