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
;
137 int current_length
= mlt_producer_get_out( producer
) - mlt_producer_get_in( producer
) + 1;
139 // Check if the length of the producer has changed
140 if ( this->list
[ i
]->frame_in
!= mlt_producer_get_in( producer
) ||
141 this->list
[ i
]->frame_out
!= mlt_producer_get_out( producer
) )
143 // This clip should be removed...
144 if ( current_length
< 1 )
146 this->list
[ i
]->frame_in
= 0;
147 this->list
[ i
]->frame_out
= -1;
148 this->list
[ i
]->frame_count
= 0;
152 this->list
[ i
]->frame_in
= mlt_producer_get_in( producer
);
153 this->list
[ i
]->frame_out
= mlt_producer_get_out( producer
);
154 this->list
[ i
]->frame_count
= current_length
;
157 // Update the producer_length
158 this->list
[ i
]->producer_length
= current_length
;
162 // Calculate the frame_count
163 this->list
[ i
]->frame_count
= ( this->list
[ i
]->frame_out
- this->list
[ i
]->frame_in
+ 1 ) * this->list
[ i
]->repeat
;
165 // Update the frame_count for this clip
166 frame_count
+= this->list
[ i
]->frame_count
;
169 // Refresh all properties
170 mlt_events_block( properties
, properties
);
171 mlt_properties_set_position( properties
, "length", frame_count
);
172 mlt_events_unblock( properties
, properties
);
173 mlt_properties_set_position( properties
, "out", frame_count
- 1 );
178 /** Listener for producers on the playlist.
181 static void mlt_playlist_listener( mlt_producer producer
, mlt_playlist
this )
183 mlt_playlist_virtual_refresh( this );
186 /** Append to the virtual playlist.
189 static int mlt_playlist_virtual_append( mlt_playlist
this, mlt_producer source
, mlt_position in
, mlt_position out
)
191 mlt_producer producer
= NULL
;
192 mlt_properties properties
= NULL
;
193 mlt_properties parent
= NULL
;
195 // If we have a cut, then use the in/out points from the cut
196 if ( mlt_producer_is_blank( source
) )
198 // Make sure the blank is long enough to accomodate the length specified
199 if ( out
- in
+ 1 > mlt_producer_get_length( &this->blank
) )
201 mlt_properties blank_props
= MLT_PRODUCER_PROPERTIES( &this->blank
);
202 mlt_events_block( blank_props
, blank_props
);
203 mlt_producer_set_in_and_out( &this->blank
, in
, out
);
204 mlt_events_unblock( blank_props
, blank_props
);
207 // Now make sure the cut comes from this this->blank
208 if ( source
== NULL
)
210 producer
= mlt_producer_cut( &this->blank
, in
, out
);
212 else if ( !mlt_producer_is_cut( source
) || mlt_producer_cut_parent( source
) != &this->blank
)
214 producer
= mlt_producer_cut( &this->blank
, in
, out
);
219 mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer
) );
222 properties
= MLT_PRODUCER_PROPERTIES( producer
);
224 else if ( mlt_producer_is_cut( source
) )
228 in
= mlt_producer_get_in( producer
);
229 if ( out
== -1 || out
> mlt_producer_get_out( producer
) )
230 out
= mlt_producer_get_out( producer
);
231 properties
= MLT_PRODUCER_PROPERTIES( producer
);
232 mlt_properties_inc_ref( properties
);
236 producer
= mlt_producer_cut( source
, in
, out
);
237 if ( in
== -1 || in
< mlt_producer_get_in( producer
) )
238 in
= mlt_producer_get_in( producer
);
239 if ( out
== -1 || out
> mlt_producer_get_out( producer
) )
240 out
= mlt_producer_get_out( producer
);
241 properties
= MLT_PRODUCER_PROPERTIES( producer
);
244 // Fetch the cuts parent properties
245 parent
= MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( producer
) );
247 // Remove fezzik normalisers for fx cuts
248 if ( mlt_properties_get_int( parent
, "meta.fx_cut" ) )
250 mlt_service service
= MLT_PRODUCER_SERVICE( mlt_producer_cut_parent( producer
) );
251 mlt_filter filter
= mlt_service_filter( service
, 0 );
252 while ( filter
!= NULL
&& mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter
), "_fezzik" ) )
254 mlt_service_detach( service
, filter
);
255 filter
= mlt_service_filter( service
, 0 );
257 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( producer
), "meta.fx_cut", 1 );
260 // Check that we have room
261 if ( this->count
>= this->size
)
264 this->list
= realloc( this->list
, ( this->size
+ 10 ) * sizeof( playlist_entry
* ) );
265 for ( i
= this->size
; i
< this->size
+ 10; i
++ ) this->list
[ i
] = NULL
;
270 this->list
[ this->count
] = calloc( sizeof( playlist_entry
), 1 );
271 if ( this->list
[ this->count
] != NULL
)
273 this->list
[ this->count
]->producer
= producer
;
274 this->list
[ this->count
]->frame_in
= in
;
275 this->list
[ this->count
]->frame_out
= out
;
276 this->list
[ this->count
]->frame_count
= out
- in
+ 1;
277 this->list
[ this->count
]->repeat
= 1;
278 this->list
[ this->count
]->producer_length
= mlt_producer_get_out( producer
) - mlt_producer_get_in( producer
) + 1;
279 this->list
[ this->count
]->event
= mlt_events_listen( parent
, this, "producer-changed", ( mlt_listener
)mlt_playlist_listener
);
280 mlt_event_inc_ref( this->list
[ this->count
]->event
);
281 mlt_properties_set( properties
, "eof", "pause" );
282 mlt_producer_set_speed( producer
, 0 );
286 return mlt_playlist_virtual_refresh( this );
289 static mlt_producer
mlt_playlist_locate( mlt_playlist
this, mlt_position
*position
, int *clip
, int *total
)
291 // Default producer to NULL
292 mlt_producer producer
= NULL
;
294 // Loop for each producer until found
295 for ( *clip
= 0; *clip
< this->count
; *clip
+= 1 )
297 // Increment the total
298 *total
+= this->list
[ *clip
]->frame_count
;
300 // Check if the position indicates that we have found the clip
301 // Note that 0 length clips get skipped automatically
302 if ( *position
< this->list
[ *clip
]->frame_count
)
304 // Found it, now break
305 producer
= this->list
[ *clip
]->producer
;
310 // Decrement position by length of this entry
311 *position
-= this->list
[ *clip
]->frame_count
;
318 /** Seek in the virtual playlist.
321 static mlt_service
mlt_playlist_virtual_seek( mlt_playlist
this, int *progressive
)
323 // Map playlist position to real producer in virtual playlist
324 mlt_position position
= mlt_producer_frame( &this->parent
);
326 // Keep the original position since we change it while iterating through the list
327 mlt_position original
= position
;
329 // Clip index and total
333 // Locate the producer for the position
334 mlt_producer producer
= mlt_playlist_locate( this, &position
, &i
, &total
);
336 // Get the properties
337 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
339 // Automatically close previous producers if requested
340 if ( i
> 1 // keep immediate previous in case app wants to get info about what just finished
341 && position
< 2 // tolerate off-by-one error on going to next clip
342 && mlt_properties_get_int( properties
, "autoclose" ) )
345 // They might have jumped ahead!
346 for ( j
= 0; j
< i
- 1; j
++ )
348 mlt_service_lock( MLT_PRODUCER_SERVICE( this->list
[ j
]->producer
) );
349 mlt_producer p
= this->list
[ j
]->producer
;
352 this->list
[ j
]->producer
= NULL
;
353 mlt_service_unlock( MLT_PRODUCER_SERVICE( p
) );
354 mlt_producer_close( p
);
356 // If p is null, the lock will not have been "taken"
360 // Get the eof handling
361 char *eof
= mlt_properties_get( properties
, "eof" );
363 // Seek in real producer to relative position
364 if ( producer
!= NULL
)
366 int count
= this->list
[ i
]->frame_count
/ this->list
[ i
]->repeat
;
367 *progressive
= count
== 1;
368 mlt_producer_seek( producer
, (int)position
% count
);
370 else if ( !strcmp( eof
, "pause" ) && total
> 0 )
372 playlist_entry
*entry
= this->list
[ this->count
- 1 ];
373 int count
= entry
->frame_count
/ entry
->repeat
;
374 mlt_producer this_producer
= MLT_PLAYLIST_PRODUCER( this );
375 mlt_producer_seek( this_producer
, original
- 1 );
376 producer
= entry
->producer
;
377 mlt_producer_seek( producer
, (int)entry
->frame_out
% count
);
378 mlt_producer_set_speed( this_producer
, 0 );
379 mlt_producer_set_speed( producer
, 0 );
380 *progressive
= count
== 1;
382 else if ( !strcmp( eof
, "loop" ) && total
> 0 )
384 playlist_entry
*entry
= this->list
[ 0 ];
385 mlt_producer this_producer
= MLT_PLAYLIST_PRODUCER( this );
386 mlt_producer_seek( this_producer
, 0 );
387 producer
= entry
->producer
;
388 mlt_producer_seek( producer
, 0 );
392 producer
= &this->blank
;
395 return MLT_PRODUCER_SERVICE( producer
);
398 /** Invoked when a producer indicates that it has prematurely reached its end.
401 static mlt_producer
mlt_playlist_virtual_set_out( mlt_playlist
this )
403 // Default producer to blank
404 mlt_producer producer
= &this->blank
;
406 // Map playlist position to real producer in virtual playlist
407 mlt_position position
= mlt_producer_frame( &this->parent
);
409 // Loop through the virtual playlist
412 for ( i
= 0; i
< this->count
; i
++ )
414 if ( position
< this->list
[ i
]->frame_count
)
416 // Found it, now break
417 producer
= this->list
[ i
]->producer
;
422 // Decrement position by length of this entry
423 position
-= this->list
[ i
]->frame_count
;
427 // Seek in real producer to relative position
428 if ( i
< this->count
&& this->list
[ i
]->frame_out
!= position
)
430 // Update the frame_count for the changed clip (hmmm)
431 this->list
[ i
]->frame_out
= position
;
432 this->list
[ i
]->frame_count
= this->list
[ i
]->frame_out
- this->list
[ i
]->frame_in
+ 1;
434 // Refresh the playlist
435 mlt_playlist_virtual_refresh( this );
441 /** Obtain the current clips index.
444 int mlt_playlist_current_clip( mlt_playlist
this )
446 // Map playlist position to real producer in virtual playlist
447 mlt_position position
= mlt_producer_frame( &this->parent
);
449 // Loop through the virtual playlist
452 for ( i
= 0; i
< this->count
; i
++ )
454 if ( position
< this->list
[ i
]->frame_count
)
456 // Found it, now break
461 // Decrement position by length of this entry
462 position
-= this->list
[ i
]->frame_count
;
469 /** Obtain the current clips producer.
472 mlt_producer
mlt_playlist_current( mlt_playlist
this )
474 int i
= mlt_playlist_current_clip( this );
475 if ( i
< this->count
)
476 return this->list
[ i
]->producer
;
481 /** Get the position which corresponds to the start of the next clip.
484 mlt_position
mlt_playlist_clip( mlt_playlist
this, mlt_whence whence
, int index
)
486 mlt_position position
= 0;
487 int absolute_clip
= index
;
490 // Determine the absolute clip
493 case mlt_whence_relative_start
:
494 absolute_clip
= index
;
497 case mlt_whence_relative_current
:
498 absolute_clip
= mlt_playlist_current_clip( this ) + index
;
501 case mlt_whence_relative_end
:
502 absolute_clip
= this->count
- index
;
506 // Check that we're in a valid range
507 if ( absolute_clip
< 0 )
509 else if ( absolute_clip
> this->count
)
510 absolute_clip
= this->count
;
512 // Now determine the position
513 for ( i
= 0; i
< absolute_clip
; i
++ )
514 position
+= this->list
[ i
]->frame_count
;
519 /** Get all the info about the clip specified.
522 int mlt_playlist_get_clip_info( mlt_playlist
this, mlt_playlist_clip_info
*info
, int index
)
524 int error
= index
< 0 || index
>= this->count
|| this->list
[ index
]->producer
== NULL
;
525 memset( info
, 0, sizeof( mlt_playlist_clip_info
) );
528 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ index
]->producer
);
529 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
531 info
->producer
= producer
;
532 info
->cut
= this->list
[ index
]->producer
;
533 info
->start
= mlt_playlist_clip( this, mlt_whence_relative_start
, index
);
534 info
->resource
= mlt_properties_get( properties
, "resource" );
535 info
->frame_in
= this->list
[ index
]->frame_in
;
536 info
->frame_out
= this->list
[ index
]->frame_out
;
537 info
->frame_count
= this->list
[ index
]->frame_count
;
538 info
->repeat
= this->list
[ index
]->repeat
;
539 info
->length
= mlt_producer_get_length( producer
);
540 info
->fps
= mlt_producer_get_fps( producer
);
546 /** Get number of clips in the playlist.
549 int mlt_playlist_count( mlt_playlist
this )
554 /** Clear the playlist.
557 int mlt_playlist_clear( mlt_playlist
this )
560 for ( i
= 0; i
< this->count
; i
++ )
562 mlt_event_close( this->list
[ i
]->event
);
563 mlt_producer_close( this->list
[ i
]->producer
);
566 return mlt_playlist_virtual_refresh( this );
569 /** Append a producer to the playlist.
572 int mlt_playlist_append( mlt_playlist
this, mlt_producer producer
)
574 // Append to virtual list
575 return mlt_playlist_virtual_append( this, producer
, 0, mlt_producer_get_playtime( producer
) - 1 );
578 /** Append a producer to the playlist with in/out points.
581 int mlt_playlist_append_io( mlt_playlist
this, mlt_producer producer
, mlt_position in
, mlt_position out
)
583 // Append to virtual list
584 if ( in
!= -1 && out
!= -1 )
585 return mlt_playlist_virtual_append( this, producer
, in
, out
);
587 return mlt_playlist_append( this, producer
);
590 /** Append a blank to the playlist of a given length.
593 int mlt_playlist_blank( mlt_playlist
this, mlt_position length
)
595 // Append to the virtual list
596 return mlt_playlist_virtual_append( this, &this->blank
, 0, length
);
599 /** Insert a producer into the playlist.
602 int mlt_playlist_insert( mlt_playlist
this, mlt_producer producer
, int where
, mlt_position in
, mlt_position out
)
605 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
606 mlt_playlist_append_io( this, producer
, in
, out
);
608 // Move to the position specified
609 mlt_playlist_move( this, this->count
- 1, where
);
610 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
612 return mlt_playlist_virtual_refresh( this );
615 /** Remove an entry in the playlist.
618 int mlt_playlist_remove( mlt_playlist
this, int where
)
620 int error
= where
< 0 || where
>= this->count
;
621 if ( error
== 0 && mlt_playlist_unmix( this, where
) != 0 )
623 // We need to know the current clip and the position within the playlist
624 int current
= mlt_playlist_current_clip( this );
625 mlt_position position
= mlt_producer_position( MLT_PLAYLIST_PRODUCER( this ) );
627 // We need all the details about the clip we're removing
628 mlt_playlist_clip_info where_info
;
629 playlist_entry
*entry
= this->list
[ where
];
630 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( entry
->producer
);
636 mlt_playlist_get_clip_info( this, &where_info
, where
);
638 // Make sure the clip to be removed is valid and correct if necessary
641 if ( where
>= this->count
)
642 where
= this->count
- 1;
644 // Reorganise the list
645 for ( i
= where
+ 1; i
< this->count
; i
++ )
646 this->list
[ i
- 1 ] = this->list
[ i
];
649 if ( entry
->preservation_hack
== 0 )
651 // Decouple from mix_in/out if necessary
652 if ( mlt_properties_get_data( properties
, "mix_in", NULL
) != NULL
)
654 mlt_properties mix
= mlt_properties_get_data( properties
, "mix_in", NULL
);
655 mlt_properties_set_data( mix
, "mix_out", NULL
, 0, NULL
, NULL
);
657 if ( mlt_properties_get_data( properties
, "mix_out", NULL
) != NULL
)
659 mlt_properties mix
= mlt_properties_get_data( properties
, "mix_out", NULL
);
660 mlt_properties_set_data( mix
, "mix_in", NULL
, 0, NULL
, NULL
);
663 if ( mlt_properties_ref_count( MLT_PRODUCER_PROPERTIES( entry
->producer
) ) == 1 )
664 mlt_producer_clear( entry
->producer
);
667 // Close the producer associated to the clip info
668 mlt_event_close( entry
->event
);
669 mlt_producer_close( entry
->producer
);
672 if ( where
== current
)
673 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), where_info
.start
);
674 else if ( where
< current
&& this->count
> 0 )
675 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), position
- where_info
.frame_count
);
676 else if ( this->count
== 0 )
677 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), 0 );
682 // Refresh the playlist
683 mlt_playlist_virtual_refresh( this );
689 /** Move an entry in the playlist.
692 int mlt_playlist_move( mlt_playlist
this, int src
, int dest
)
696 /* We need to ensure that the requested indexes are valid and correct it as necessary */
699 if ( src
>= this->count
)
700 src
= this->count
- 1;
704 if ( dest
>= this->count
)
705 dest
= this->count
- 1;
707 if ( src
!= dest
&& this->count
> 1 )
709 int current
= mlt_playlist_current_clip( this );
710 mlt_position position
= mlt_producer_position( MLT_PLAYLIST_PRODUCER( this ) );
711 playlist_entry
*src_entry
= NULL
;
713 // We need all the details about the current clip
714 mlt_playlist_clip_info current_info
;
716 mlt_playlist_get_clip_info( this, ¤t_info
, current
);
717 position
-= current_info
.start
;
719 if ( current
== src
)
721 else if ( current
> src
&& current
< dest
)
723 else if ( current
== dest
)
726 src_entry
= this->list
[ src
];
729 for ( i
= src
; i
> dest
; i
-- )
730 this->list
[ i
] = this->list
[ i
- 1 ];
734 for ( i
= src
; i
< dest
; i
++ )
735 this->list
[ i
] = this->list
[ i
+ 1 ];
737 this->list
[ dest
] = src_entry
;
739 mlt_playlist_get_clip_info( this, ¤t_info
, current
);
740 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), current_info
.start
+ position
);
741 mlt_playlist_virtual_refresh( this );
747 /** Repeat the specified clip n times.
750 int mlt_playlist_repeat_clip( mlt_playlist
this, int clip
, int repeat
)
752 int error
= repeat
< 1 || clip
< 0 || clip
>= this->count
;
755 playlist_entry
*entry
= this->list
[ clip
];
756 entry
->repeat
= repeat
;
757 mlt_playlist_virtual_refresh( this );
762 /** Resize the specified clip.
765 int mlt_playlist_resize_clip( mlt_playlist
this, int clip
, mlt_position in
, mlt_position out
)
767 int error
= clip
< 0 || clip
>= this->count
;
768 if ( error
== 0 && mlt_playlist_resize_mix( this, clip
, in
, out
) != 0 )
770 playlist_entry
*entry
= this->list
[ clip
];
771 mlt_producer producer
= entry
->producer
;
772 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
774 mlt_events_block( properties
, properties
);
776 if ( mlt_producer_is_blank( producer
) )
778 // Make sure the blank is long enough to accomodate the length specified
779 if ( out
- in
+ 1 > mlt_producer_get_length( &this->blank
) )
781 mlt_properties blank_props
= MLT_PRODUCER_PROPERTIES( &this->blank
);
782 mlt_properties_set_int( blank_props
, "length", out
- in
+ 1 );
783 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( producer
), "length", out
- in
+ 1 );
784 mlt_producer_set_in_and_out( &this->blank
, 0, out
- in
);
790 if ( out
<= -1 || out
>= mlt_producer_get_length( producer
) )
791 out
= mlt_producer_get_length( producer
) - 1;
800 mlt_producer_set_in_and_out( producer
, in
, out
);
801 mlt_events_unblock( properties
, properties
);
802 mlt_playlist_virtual_refresh( this );
807 /** Split a clip on the playlist at the given position.
810 int mlt_playlist_split( mlt_playlist
this, int clip
, mlt_position position
)
812 int error
= clip
< 0 || clip
>= this->count
;
815 playlist_entry
*entry
= this->list
[ clip
];
816 position
= position
< 0 ? entry
->frame_count
+ position
- 1 : position
;
817 if ( position
>= 0 && position
< entry
->frame_count
- 1 )
819 int in
= entry
->frame_in
;
820 int out
= entry
->frame_out
;
821 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
822 mlt_playlist_resize_clip( this, clip
, in
, in
+ position
);
823 if ( !mlt_producer_is_blank( entry
->producer
) )
826 mlt_properties entry_properties
= MLT_PRODUCER_PROPERTIES( entry
->producer
);
827 mlt_producer split
= mlt_producer_cut( entry
->producer
, in
+ position
+ 1, out
);
828 mlt_properties split_properties
= MLT_PRODUCER_PROPERTIES( split
);
829 mlt_playlist_insert( this, split
, clip
+ 1, 0, -1 );
830 for ( i
= 0; i
< mlt_properties_count( entry_properties
); i
++ )
832 char *name
= mlt_properties_get_name( entry_properties
, i
);
833 if ( name
!= NULL
&& !strncmp( name
, "meta.", 5 ) )
834 mlt_properties_set( split_properties
, name
, mlt_properties_get_value( entry_properties
, i
) );
836 mlt_producer_close( split
);
840 mlt_playlist_insert( this, &this->blank
, clip
+ 1, 0, out
- position
- 1 );
842 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
843 mlt_playlist_virtual_refresh( this );
853 /** Split the playlist at the absolute position.
856 int mlt_playlist_split_at( mlt_playlist
this, mlt_position position
, int left
)
858 int result
= this == NULL ?
-1 : 0;
861 if ( position
>= 0 && position
< mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) ) )
863 int clip
= mlt_playlist_get_clip_index_at( this, position
);
864 mlt_playlist_clip_info info
;
865 mlt_playlist_get_clip_info( this, &info
, clip
);
866 if ( left
&& position
!= info
.start
)
867 mlt_playlist_split( this, clip
, position
- info
.start
- 1 );
869 mlt_playlist_split( this, clip
, position
- info
.start
);
872 else if ( position
<= 0 )
878 result
= mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
884 /** Join 1 or more consecutive clips.
887 int mlt_playlist_join( mlt_playlist
this, int clip
, int count
, int merge
)
889 int error
= clip
< 0 || clip
>= this->count
;
893 mlt_playlist new_clip
= mlt_playlist_init( );
894 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
895 if ( clip
+ count
>= this->count
)
896 count
= this->count
- clip
- 1;
897 for ( i
= 0; i
<= count
; i
++ )
899 playlist_entry
*entry
= this->list
[ clip
];
900 mlt_playlist_append( new_clip
, entry
->producer
);
901 mlt_playlist_repeat_clip( new_clip
, i
, entry
->repeat
);
902 entry
->preservation_hack
= 1;
903 mlt_playlist_remove( this, clip
);
905 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
906 mlt_playlist_insert( this, MLT_PLAYLIST_PRODUCER( new_clip
), clip
, 0, -1 );
907 mlt_playlist_close( new_clip
);
912 /** Mix consecutive clips for a specified length and apply transition if specified.
915 int mlt_playlist_mix( mlt_playlist
this, int clip
, int length
, mlt_transition transition
)
917 int error
= ( clip
< 0 || clip
+ 1 >= this->count
);
920 playlist_entry
*clip_a
= this->list
[ clip
];
921 playlist_entry
*clip_b
= this->list
[ clip
+ 1 ];
922 mlt_producer track_a
= NULL
;
923 mlt_producer track_b
= NULL
;
924 mlt_tractor tractor
= mlt_tractor_new( );
925 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
927 // Check length is valid for both clips and resize if necessary.
928 int max_size
= clip_a
->frame_count
> clip_b
->frame_count ? clip_a
->frame_count
: clip_b
->frame_count
;
929 length
= length
> max_size ? max_size
: length
;
931 // Create the a and b tracks/cuts if necessary - note that no cuts are required if the length matches
932 if ( length
!= clip_a
->frame_count
)
933 track_a
= mlt_producer_cut( clip_a
->producer
, clip_a
->frame_out
- length
+ 1, clip_a
->frame_out
);
935 track_a
= clip_a
->producer
;
937 if ( length
!= clip_b
->frame_count
)
938 track_b
= mlt_producer_cut( clip_b
->producer
, clip_b
->frame_in
, clip_b
->frame_in
+ length
- 1 );
940 track_b
= clip_b
->producer
;
942 // Set the tracks on the tractor
943 mlt_tractor_set_track( tractor
, track_a
, 0 );
944 mlt_tractor_set_track( tractor
, track_b
, 1 );
946 // Insert the mix object into the playlist
947 mlt_playlist_insert( this, MLT_TRACTOR_PRODUCER( tractor
), clip
+ 1, -1, -1 );
948 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mlt_mix", tractor
, 0, NULL
, NULL
);
950 // Attach the transition
951 if ( transition
!= NULL
)
953 mlt_field field
= mlt_tractor_field( tractor
);
954 mlt_field_plant_transition( field
, transition
, 0, 1 );
955 mlt_transition_set_in_and_out( transition
, 0, length
- 1 );
958 // Close our references to the tracks if we created new cuts above (the tracks can still be used here)
959 if ( track_a
!= clip_a
->producer
)
960 mlt_producer_close( track_a
);
961 if ( track_b
!= clip_b
->producer
)
962 mlt_producer_close( track_b
);
964 // Check if we have anything left on the right hand clip
965 if ( track_b
== clip_b
->producer
)
967 clip_b
->preservation_hack
= 1;
968 mlt_playlist_remove( this, clip
+ 2 );
970 else if ( clip_b
->frame_out
- clip_b
->frame_in
> length
)
972 mlt_playlist_resize_clip( this, clip
+ 2, clip_b
->frame_in
+ length
, clip_b
->frame_out
);
973 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_b
->producer
), "mix_in", tractor
, 0, NULL
, NULL
);
974 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mix_out", clip_b
->producer
, 0, NULL
, NULL
);
978 mlt_producer_clear( clip_b
->producer
);
979 mlt_playlist_remove( this, clip
+ 2 );
982 // Check if we have anything left on the left hand clip
983 if ( track_a
== clip_a
->producer
)
985 clip_a
->preservation_hack
= 1;
986 mlt_playlist_remove( this, clip
);
988 else if ( clip_a
->frame_out
- clip_a
->frame_in
> length
)
990 mlt_playlist_resize_clip( this, clip
, clip_a
->frame_in
, clip_a
->frame_out
- length
);
991 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_a
->producer
), "mix_out", tractor
, 0, NULL
, NULL
);
992 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mix_in", clip_a
->producer
, 0, NULL
, NULL
);
996 mlt_producer_clear( clip_a
->producer
);
997 mlt_playlist_remove( this, clip
);
1000 // Unblock and force a fire off of change events to listeners
1001 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1002 mlt_playlist_virtual_refresh( this );
1003 mlt_tractor_close( tractor
);
1008 /** Add a transition to an existing mix.
1011 int mlt_playlist_mix_add( mlt_playlist
this, int clip
, mlt_transition transition
)
1013 mlt_producer producer
= mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip
) );
1014 mlt_properties properties
= producer
!= NULL ?
MLT_PRODUCER_PROPERTIES( producer
) : NULL
;
1015 mlt_tractor tractor
= properties
!= NULL ?
mlt_properties_get_data( properties
, "mlt_mix", NULL
) : NULL
;
1016 int error
= transition
== NULL
|| tractor
== NULL
;
1019 mlt_field field
= mlt_tractor_field( tractor
);
1020 mlt_field_plant_transition( field
, transition
, 0, 1 );
1021 mlt_transition_set_in_and_out( transition
, 0, this->list
[ clip
]->frame_count
- 1 );
1026 /** Return the clip at the clip index.
1029 mlt_producer
mlt_playlist_get_clip( mlt_playlist
this, int clip
)
1031 if ( clip
>= 0 && clip
< this->count
)
1032 return this->list
[ clip
]->producer
;
1036 /** Return the clip at the specified position.
1039 mlt_producer
mlt_playlist_get_clip_at( mlt_playlist
this, mlt_position position
)
1041 int index
= 0, total
= 0;
1042 return mlt_playlist_locate( this, &position
, &index
, &total
);
1045 /** Return the clip index of the specified position.
1048 int mlt_playlist_get_clip_index_at( mlt_playlist
this, mlt_position position
)
1050 int index
= 0, total
= 0;
1051 mlt_playlist_locate( this, &position
, &index
, &total
);
1055 /** Determine if the clip is a mix.
1058 int mlt_playlist_clip_is_mix( mlt_playlist
this, int clip
)
1060 mlt_producer producer
= mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip
) );
1061 mlt_properties properties
= producer
!= NULL ?
MLT_PRODUCER_PROPERTIES( producer
) : NULL
;
1062 mlt_tractor tractor
= properties
!= NULL ?
mlt_properties_get_data( properties
, "mlt_mix", NULL
) : NULL
;
1063 return tractor
!= NULL
;
1066 /** Remove a mixed clip - ensure that the cuts included in the mix find their way
1067 back correctly on to the playlist.
1070 static int mlt_playlist_unmix( mlt_playlist
this, int clip
)
1072 int error
= ( clip
< 0 || clip
>= this->count
);
1074 // Ensure that the clip request is actually a mix
1077 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ clip
]->producer
);
1078 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
1079 error
= mlt_properties_get_data( properties
, "mlt_mix", NULL
) == NULL
||
1080 this->list
[ clip
]->preservation_hack
;
1085 playlist_entry
*mix
= this->list
[ clip
];
1086 mlt_tractor tractor
= ( mlt_tractor
)mlt_producer_cut_parent( mix
->producer
);
1087 mlt_properties properties
= MLT_TRACTOR_PROPERTIES( tractor
);
1088 mlt_producer clip_a
= mlt_properties_get_data( properties
, "mix_in", NULL
);
1089 mlt_producer clip_b
= mlt_properties_get_data( properties
, "mix_out", NULL
);
1090 int length
= mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor
) );
1091 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
1093 if ( clip_a
!= NULL
)
1095 mlt_producer_set_in_and_out( clip_a
, mlt_producer_get_in( clip_a
), mlt_producer_get_out( clip_a
) + length
);
1099 mlt_producer cut
= mlt_tractor_get_track( tractor
, 0 );
1100 mlt_playlist_insert( this, cut
, clip
, -1, -1 );
1104 if ( clip_b
!= NULL
)
1106 mlt_producer_set_in_and_out( clip_b
, mlt_producer_get_in( clip_b
) - length
, mlt_producer_get_out( clip_b
) );
1110 mlt_producer cut
= mlt_tractor_get_track( tractor
, 1 );
1111 mlt_playlist_insert( this, cut
, clip
+ 1, -1, -1 );
1114 mlt_properties_set_data( properties
, "mlt_mix", NULL
, 0, NULL
, NULL
);
1115 mlt_playlist_remove( this, clip
);
1116 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1117 mlt_playlist_virtual_refresh( this );
1122 static int mlt_playlist_resize_mix( mlt_playlist
this, int clip
, int in
, int out
)
1124 int error
= ( clip
< 0 || clip
>= this->count
);
1126 // Ensure that the clip request is actually a mix
1129 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ clip
]->producer
);
1130 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
1131 error
= mlt_properties_get_data( properties
, "mlt_mix", NULL
) == NULL
;
1136 playlist_entry
*mix
= this->list
[ clip
];
1137 mlt_tractor tractor
= ( mlt_tractor
)mlt_producer_cut_parent( mix
->producer
);
1138 mlt_properties properties
= MLT_TRACTOR_PROPERTIES( tractor
);
1139 mlt_producer clip_a
= mlt_properties_get_data( properties
, "mix_in", NULL
);
1140 mlt_producer clip_b
= mlt_properties_get_data( properties
, "mix_out", NULL
);
1141 mlt_producer track_a
= mlt_tractor_get_track( tractor
, 0 );
1142 mlt_producer track_b
= mlt_tractor_get_track( tractor
, 1 );
1143 int length
= out
- in
+ 1;
1144 int length_diff
= length
- mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor
) );
1145 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
1147 if ( clip_a
!= NULL
)
1148 mlt_producer_set_in_and_out( clip_a
, mlt_producer_get_in( clip_a
), mlt_producer_get_out( clip_a
) - length_diff
);
1150 if ( clip_b
!= NULL
)
1151 mlt_producer_set_in_and_out( clip_b
, mlt_producer_get_in( clip_b
) + length_diff
, mlt_producer_get_out( clip_b
) );
1153 mlt_producer_set_in_and_out( track_a
, mlt_producer_get_in( track_a
) - length_diff
, mlt_producer_get_out( track_a
) );
1154 mlt_producer_set_in_and_out( track_b
, mlt_producer_get_in( track_b
), mlt_producer_get_out( track_b
) + length_diff
);
1155 mlt_producer_set_in_and_out( MLT_MULTITRACK_PRODUCER( mlt_tractor_multitrack( tractor
) ), in
, out
);
1156 mlt_producer_set_in_and_out( MLT_TRACTOR_PRODUCER( tractor
), in
, out
);
1157 mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( mix
->producer
), "length", out
- in
+ 1 );
1158 mlt_producer_set_in_and_out( mix
->producer
, in
, out
);
1160 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1161 mlt_playlist_virtual_refresh( this );
1166 /** Consolodate adjacent blank producers.
1169 void mlt_playlist_consolidate_blanks( mlt_playlist
this, int keep_length
)
1174 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1176 mlt_events_block( properties
, properties
);
1177 for ( i
= 1; i
< this->count
; i
++ )
1179 playlist_entry
*left
= this->list
[ i
- 1 ];
1180 playlist_entry
*right
= this->list
[ i
];
1182 if ( mlt_producer_is_blank( left
->producer
) && mlt_producer_is_blank( right
->producer
) )
1184 mlt_playlist_resize_clip( this, i
- 1, 0, left
->frame_count
+ right
->frame_count
- 1 );
1185 mlt_playlist_remove( this, i
-- );
1189 if ( !keep_length
&& this->count
> 0 )
1191 playlist_entry
*last
= this->list
[ this->count
- 1 ];
1192 if ( mlt_producer_is_blank( last
->producer
) )
1193 mlt_playlist_remove( this, this->count
- 1 );
1196 mlt_events_unblock( properties
, properties
);
1197 mlt_playlist_virtual_refresh( this );
1201 /** Determine if the specified clip index is a blank.
1204 int mlt_playlist_is_blank( mlt_playlist
this, int clip
)
1206 return this == NULL
|| mlt_producer_is_blank( mlt_playlist_get_clip( this, clip
) );
1209 /** Determine if the specified position is a blank.
1212 int mlt_playlist_is_blank_at( mlt_playlist
this, mlt_position position
)
1214 return this == NULL
|| mlt_producer_is_blank( mlt_playlist_get_clip_at( this, position
) );
1217 /** Replace the specified clip with a blank and return the clip.
1220 mlt_producer
mlt_playlist_replace_with_blank( mlt_playlist
this, int clip
)
1222 mlt_producer producer
= NULL
;
1223 if ( !mlt_playlist_is_blank( this, clip
) )
1225 playlist_entry
*entry
= this->list
[ clip
];
1226 int in
= entry
->frame_in
;
1227 int out
= entry
->frame_out
;
1228 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1229 producer
= entry
->producer
;
1230 mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer
) );
1231 mlt_events_block( properties
, properties
);
1232 mlt_playlist_remove( this, clip
);
1233 mlt_playlist_blank( this, out
- in
);
1234 mlt_playlist_move( this, this->count
- 1, clip
);
1235 mlt_events_unblock( properties
, properties
);
1236 mlt_playlist_virtual_refresh( this );
1237 mlt_producer_set_in_and_out( producer
, in
, out
);
1242 void mlt_playlist_insert_blank( mlt_playlist
this, int clip
, int length
)
1244 if ( this != NULL
&& length
>= 0 )
1246 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1247 mlt_events_block( properties
, properties
);
1248 mlt_playlist_blank( this, length
);
1249 mlt_playlist_move( this, this->count
- 1, clip
);
1250 mlt_events_unblock( properties
, properties
);
1251 mlt_playlist_virtual_refresh( this );
1255 void mlt_playlist_pad_blanks( mlt_playlist
this, mlt_position position
, int length
, int find
)
1257 if ( this != NULL
&& length
!= 0 )
1259 int clip
= mlt_playlist_get_clip_index_at( this, position
);
1260 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1261 mlt_events_block( properties
, properties
);
1262 if ( find
&& clip
< this->count
&& !mlt_playlist_is_blank( this, clip
) )
1264 if ( clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1266 mlt_playlist_clip_info info
;
1267 mlt_playlist_get_clip_info( this, &info
, clip
);
1268 if ( info
.frame_out
+ length
> info
.frame_in
)
1269 mlt_playlist_resize_clip( this, clip
, info
.frame_in
, info
.frame_out
+ length
);
1271 mlt_playlist_remove( this, clip
);
1273 else if ( find
&& clip
< this->count
&& length
> 0 )
1275 mlt_playlist_insert_blank( this, clip
, length
);
1277 mlt_events_unblock( properties
, properties
);
1278 mlt_playlist_virtual_refresh( this );
1282 int mlt_playlist_insert_at( mlt_playlist
this, mlt_position position
, mlt_producer producer
, int mode
)
1284 int ret
= this == NULL
|| position
< 0 || producer
== NULL
;
1287 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1288 int length
= mlt_producer_get_playtime( producer
);
1289 int clip
= mlt_playlist_get_clip_index_at( this, position
);
1290 mlt_playlist_clip_info info
;
1291 mlt_playlist_get_clip_info( this, &info
, clip
);
1292 mlt_events_block( properties
, this );
1293 if ( clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1295 // Split and move to new clip if need be
1296 if ( position
!= info
.start
&& mlt_playlist_split( this, clip
, position
- info
.start
- 1 ) == 0 )
1297 mlt_playlist_get_clip_info( this, &info
, ++ clip
);
1299 // Split again if need be
1300 if ( length
< info
.frame_count
)
1301 mlt_playlist_split( this, clip
, length
- 1 );
1304 mlt_playlist_remove( this, clip
);
1307 mlt_playlist_insert( this, producer
, clip
, -1, -1 );
1310 else if ( clip
< this->count
)
1312 if ( position
> info
.start
+ info
.frame_count
/ 2 )
1314 if ( mode
== 1 && clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1316 mlt_playlist_get_clip_info( this, &info
, clip
);
1317 if ( length
< info
.frame_count
)
1318 mlt_playlist_split( this, clip
, length
);
1319 mlt_playlist_remove( this, clip
);
1321 mlt_playlist_insert( this, producer
, clip
, -1, -1 );
1327 if ( position
== info
.start
)
1328 mlt_playlist_remove( this, clip
);
1330 mlt_playlist_blank( this, position
- mlt_properties_get_int( properties
, "length" ) - 1 );
1332 mlt_playlist_append( this, producer
);
1333 ret
= this->count
- 1;
1335 mlt_events_unblock( properties
, this );
1336 mlt_playlist_virtual_refresh( this );
1345 int mlt_playlist_clip_start( mlt_playlist
this, int clip
)
1347 mlt_playlist_clip_info info
;
1348 if ( mlt_playlist_get_clip_info( this, &info
, clip
) == 0 )
1350 return clip
< 0 ?
0 : mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
1353 int mlt_playlist_clip_length( mlt_playlist
this, int clip
)
1355 mlt_playlist_clip_info info
;
1356 if ( mlt_playlist_get_clip_info( this, &info
, clip
) == 0 )
1357 return info
.frame_count
;
1361 int mlt_playlist_blanks_from( mlt_playlist
this, int clip
, int bounded
)
1364 mlt_playlist_clip_info info
;
1365 if ( this != NULL
&& clip
< this->count
)
1367 mlt_playlist_get_clip_info( this, &info
, clip
);
1368 if ( mlt_playlist_is_blank( this, clip
) )
1369 count
+= info
.frame_count
;
1371 bounded
= this->count
;
1372 for ( clip
++; clip
< this->count
&& bounded
>= 0; clip
++ )
1374 mlt_playlist_get_clip_info( this, &info
, clip
);
1375 if ( mlt_playlist_is_blank( this, clip
) )
1376 count
+= info
.frame_count
;
1384 int mlt_playlist_remove_region( mlt_playlist
this, mlt_position position
, int length
)
1386 int index
= mlt_playlist_get_clip_index_at( this, position
);
1387 if ( index
>= 0 && index
< this->count
)
1389 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1390 int clip_start
= mlt_playlist_clip_start( this, index
);
1391 int clip_length
= mlt_playlist_clip_length( this, index
);
1392 int list_length
= mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
1393 mlt_events_block( properties
, this );
1395 if ( position
+ length
> list_length
)
1396 length
-= ( position
+ length
- list_length
);
1398 if ( clip_start
< position
)
1400 mlt_playlist_split( this, index
++, position
- clip_start
);
1401 clip_length
-= position
- clip_start
;
1406 if ( mlt_playlist_clip_length( this, index
) > length
)
1407 mlt_playlist_split( this, index
, length
);
1408 length
-= mlt_playlist_clip_length( this, index
);
1409 mlt_playlist_remove( this, index
);
1412 mlt_playlist_consolidate_blanks( this, 0 );
1413 mlt_events_unblock( properties
, this );
1414 mlt_playlist_virtual_refresh( this );
1416 // Just to be sure, we'll get the clip index again...
1417 index
= mlt_playlist_get_clip_index_at( this, position
);
1422 int mlt_playlist_move_region( mlt_playlist
this, mlt_position position
, int length
, int new_position
)
1430 /** Get the current frame.
1433 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
)
1435 // Check that we have a producer
1436 if ( producer
== NULL
)
1442 // Get this mlt_playlist
1443 mlt_playlist
this = producer
->child
;
1445 // Need to ensure the frame is deinterlaced when repeating 1 frame
1446 int progressive
= 0;
1448 // Get the real producer
1449 mlt_service real
= mlt_playlist_virtual_seek( this, &progressive
);
1451 // Check that we have a producer
1454 *frame
= mlt_frame_init( MLT_PRODUCER_SERVICE( producer
) );
1459 if ( !mlt_properties_get_int( MLT_SERVICE_PROPERTIES( real
), "meta.fx_cut" ) )
1461 mlt_service_get_frame( real
, frame
, index
);
1465 mlt_producer parent
= mlt_producer_cut_parent( ( mlt_producer
)real
);
1466 *frame
= mlt_frame_init( MLT_PRODUCER_SERVICE( parent
) );
1467 mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame
), "fx_cut", 1 );
1468 mlt_frame_push_service( *frame
, NULL
);
1469 mlt_frame_push_audio( *frame
, NULL
);
1470 mlt_service_apply_filters( MLT_PRODUCER_SERVICE( parent
), *frame
, 0 );
1471 mlt_service_apply_filters( real
, *frame
, 0 );
1472 mlt_deque_pop_front( MLT_FRAME_IMAGE_STACK( *frame
) );
1473 mlt_deque_pop_front( MLT_FRAME_AUDIO_STACK( *frame
) );
1476 // Check if we're at the end of the clip
1477 mlt_properties properties
= MLT_FRAME_PROPERTIES( *frame
);
1478 if ( mlt_properties_get_int( properties
, "end_of_clip" ) )
1479 mlt_playlist_virtual_set_out( this );
1481 // Set the consumer progressive property
1484 mlt_properties_set_int( properties
, "consumer_deinterlace", progressive
);
1485 mlt_properties_set_int( properties
, "test_audio", 1 );
1488 // Check for notifier and call with appropriate argument
1489 mlt_properties playlist_properties
= MLT_PRODUCER_PROPERTIES( producer
);
1490 void ( *notifier
)( void * ) = mlt_properties_get_data( playlist_properties
, "notifier", NULL
);
1491 if ( notifier
!= NULL
)
1493 void *argument
= mlt_properties_get_data( playlist_properties
, "notifier_arg", NULL
);
1494 notifier( argument
);
1497 // Update position on the frame we're creating
1498 mlt_frame_set_position( *frame
, mlt_producer_frame( producer
) );
1500 // Position ourselves on the next frame
1501 mlt_producer_prepare_next( producer
);
1506 /** Close the playlist.
1509 void mlt_playlist_close( mlt_playlist
this )
1511 if ( this != NULL
&& mlt_properties_dec_ref( MLT_PLAYLIST_PROPERTIES( this ) ) <= 0 )
1514 this->parent
.close
= NULL
;
1515 for ( i
= 0; i
< this->count
; i
++ )
1517 mlt_event_close( this->list
[ i
]->event
);
1518 mlt_producer_close( this->list
[ i
]->producer
);
1519 free( this->list
[ i
] );
1521 mlt_producer_close( &this->blank
);
1522 mlt_producer_close( &this->parent
);