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
23 #include "mlt_playlist.h"
24 #include "mlt_tractor.h"
25 #include "mlt_multitrack.h"
26 #include "mlt_field.h"
27 #include "mlt_frame.h"
28 #include "mlt_transition.h"
34 /** Virtual playlist entry.
37 struct playlist_entry_s
39 mlt_producer producer
;
40 mlt_position frame_in
;
41 mlt_position frame_out
;
42 mlt_position frame_count
;
44 mlt_position producer_length
;
46 int preservation_hack
;
49 /** Forward declarations
52 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
);
53 static int mlt_playlist_unmix( mlt_playlist
this, int clip
);
54 static int mlt_playlist_resize_mix( mlt_playlist
this, int clip
, int in
, int out
);
59 mlt_playlist
mlt_playlist_init( )
61 mlt_playlist
this = calloc( sizeof( struct mlt_playlist_s
), 1 );
64 mlt_producer producer
= &this->parent
;
66 // Construct the producer
67 mlt_producer_init( producer
, this );
69 // Override the producer get_frame
70 producer
->get_frame
= producer_get_frame
;
72 // Define the destructor
73 producer
->close
= ( mlt_destructor
)mlt_playlist_close
;
74 producer
->close_object
= this;
77 mlt_producer_init( &this->blank
, NULL
);
78 mlt_properties_set( MLT_PRODUCER_PROPERTIES( &this->blank
), "mlt_service", "blank" );
79 mlt_properties_set( MLT_PRODUCER_PROPERTIES( &this->blank
), "resource", "blank" );
81 // Indicate that this producer is a playlist
82 mlt_properties_set_data( MLT_PLAYLIST_PROPERTIES( this ), "playlist", this, 0, NULL
, NULL
);
84 // Specify the eof condition
85 mlt_properties_set( MLT_PLAYLIST_PROPERTIES( this ), "eof", "pause" );
86 mlt_properties_set( MLT_PLAYLIST_PROPERTIES( this ), "resource", "<playlist>" );
87 mlt_properties_set( MLT_PLAYLIST_PROPERTIES( this ), "mlt_type", "mlt_producer" );
88 mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( this ), "in", 0 );
89 mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( this ), "out", -1 );
90 mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( this ), "length", 0 );
93 this->list
= malloc( this->size
* sizeof( playlist_entry
* ) );
99 /** Get the producer associated to this playlist.
102 mlt_producer
mlt_playlist_producer( mlt_playlist
this )
104 return this != NULL ?
&this->parent
: NULL
;
107 /** Get the service associated to this playlist.
110 mlt_service
mlt_playlist_service( mlt_playlist
this )
112 return MLT_PRODUCER_SERVICE( &this->parent
);
115 /** Get the propertues associated to this playlist.
118 mlt_properties
mlt_playlist_properties( mlt_playlist
this )
120 return MLT_PRODUCER_PROPERTIES( &this->parent
);
123 /** Refresh the playlist after a clip has been changed.
126 static int mlt_playlist_virtual_refresh( mlt_playlist
this )
128 // Obtain the properties
129 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
131 // Get the fps of the first producer
132 double fps
= mlt_properties_get_double( properties
, "first_fps" );
134 mlt_position frame_count
= 0;
136 for ( i
= 0; i
< this->count
; i
++ )
139 mlt_producer producer
= this->list
[ i
]->producer
;
140 int current_length
= mlt_producer_get_out( producer
) - mlt_producer_get_in( producer
) + 1;
145 // Inherit it from the producer
146 fps
= mlt_producer_get_fps( producer
);
148 else if ( fps
!= mlt_properties_get_double( MLT_PRODUCER_PROPERTIES( producer
), "fps" ) )
150 // Generate a warning for now - the following attempt to fix may fail
151 fprintf( stderr
, "Warning: fps mismatch on playlist producer %d\n", this->count
);
153 // It should be safe to impose fps on an image producer, but not necessarily safe for video
154 mlt_properties_set_double( MLT_PRODUCER_PROPERTIES( producer
), "fps", fps
);
157 // Check if the length of the producer has changed
158 if ( this->list
[ i
]->frame_in
!= mlt_producer_get_in( producer
) ||
159 this->list
[ i
]->frame_out
!= mlt_producer_get_out( producer
) )
161 // This clip should be removed...
162 if ( current_length
< 1 )
164 this->list
[ i
]->frame_in
= 0;
165 this->list
[ i
]->frame_out
= -1;
166 this->list
[ i
]->frame_count
= 0;
170 this->list
[ i
]->frame_in
= mlt_producer_get_in( producer
);
171 this->list
[ i
]->frame_out
= mlt_producer_get_out( producer
);
172 this->list
[ i
]->frame_count
= current_length
;
175 // Update the producer_length
176 this->list
[ i
]->producer_length
= current_length
;
179 // Calculate the frame_count
180 this->list
[ i
]->frame_count
= ( this->list
[ i
]->frame_out
- this->list
[ i
]->frame_in
+ 1 ) * this->list
[ i
]->repeat
;
182 // Update the frame_count for this clip
183 frame_count
+= this->list
[ i
]->frame_count
;
186 // Refresh all properties
187 mlt_properties_set_double( properties
, "first_fps", fps
);
188 mlt_properties_set_double( properties
, "fps", fps
== 0 ?
25 : fps
);
189 mlt_events_block( properties
, properties
);
190 mlt_properties_set_position( properties
, "length", frame_count
);
191 mlt_events_unblock( properties
, properties
);
192 mlt_properties_set_position( properties
, "out", frame_count
- 1 );
197 /** Listener for producers on the playlist.
200 static void mlt_playlist_listener( mlt_producer producer
, mlt_playlist
this )
202 mlt_playlist_virtual_refresh( this );
205 /** Append to the virtual playlist.
208 static int mlt_playlist_virtual_append( mlt_playlist
this, mlt_producer source
, mlt_position in
, mlt_position out
)
210 mlt_producer producer
= NULL
;
211 mlt_properties properties
= NULL
;
212 mlt_properties parent
= NULL
;
214 // If we have a cut, then use the in/out points from the cut
215 if ( mlt_producer_is_blank( source
) )
217 // Make sure the blank is long enough to accomodate the length specified
218 if ( out
- in
+ 1 > mlt_producer_get_length( &this->blank
) )
220 mlt_properties blank_props
= MLT_PRODUCER_PROPERTIES( &this->blank
);
221 mlt_events_block( blank_props
, blank_props
);
222 mlt_producer_set_in_and_out( &this->blank
, in
, out
);
223 mlt_events_unblock( blank_props
, blank_props
);
226 // Now make sure the cut comes from this this->blank
227 if ( source
== NULL
)
229 producer
= mlt_producer_cut( &this->blank
, in
, out
);
231 else if ( !mlt_producer_is_cut( source
) || mlt_producer_cut_parent( source
) != &this->blank
)
233 producer
= mlt_producer_cut( &this->blank
, in
, out
);
238 mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer
) );
241 properties
= MLT_PRODUCER_PROPERTIES( producer
);
243 else if ( mlt_producer_is_cut( source
) )
247 in
= mlt_producer_get_in( producer
);
248 if ( out
== -1 || out
> mlt_producer_get_out( producer
) )
249 out
= mlt_producer_get_out( producer
);
250 properties
= MLT_PRODUCER_PROPERTIES( producer
);
251 mlt_properties_inc_ref( properties
);
255 producer
= mlt_producer_cut( source
, in
, out
);
256 if ( in
== -1 || in
< mlt_producer_get_in( producer
) )
257 in
= mlt_producer_get_in( producer
);
258 if ( out
== -1 || out
> mlt_producer_get_out( producer
) )
259 out
= mlt_producer_get_out( producer
);
260 properties
= MLT_PRODUCER_PROPERTIES( producer
);
263 // Fetch the cuts parent properties
264 parent
= MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( producer
) );
266 // Remove fezzik normalisers for fx cuts
267 if ( mlt_properties_get_int( parent
, "meta.fx_cut" ) )
269 mlt_service service
= MLT_PRODUCER_SERVICE( mlt_producer_cut_parent( producer
) );
270 mlt_filter filter
= mlt_service_filter( service
, 0 );
271 while ( filter
!= NULL
&& mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter
), "_fezzik" ) )
273 mlt_service_detach( service
, filter
);
274 filter
= mlt_service_filter( service
, 0 );
276 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( producer
), "meta.fx_cut", 1 );
279 // Check that we have room
280 if ( this->count
>= this->size
)
283 this->list
= realloc( this->list
, ( this->size
+ 10 ) * sizeof( playlist_entry
* ) );
284 for ( i
= this->size
; i
< this->size
+ 10; i
++ ) this->list
[ i
] = NULL
;
289 this->list
[ this->count
] = calloc( sizeof( playlist_entry
), 1 );
290 if ( this->list
[ this->count
] != NULL
)
292 this->list
[ this->count
]->producer
= producer
;
293 this->list
[ this->count
]->frame_in
= in
;
294 this->list
[ this->count
]->frame_out
= out
;
295 this->list
[ this->count
]->frame_count
= out
- in
+ 1;
296 this->list
[ this->count
]->repeat
= 1;
297 this->list
[ this->count
]->producer_length
= mlt_producer_get_out( producer
) - mlt_producer_get_in( producer
) + 1;
298 this->list
[ this->count
]->event
= mlt_events_listen( parent
, this, "producer-changed", ( mlt_listener
)mlt_playlist_listener
);
299 mlt_event_inc_ref( this->list
[ this->count
]->event
);
300 mlt_properties_set( properties
, "eof", "pause" );
301 mlt_producer_set_speed( producer
, 0 );
305 return mlt_playlist_virtual_refresh( this );
308 static mlt_producer
mlt_playlist_locate( mlt_playlist
this, mlt_position
*position
, int *clip
, int *total
)
310 // Default producer to NULL
311 mlt_producer producer
= NULL
;
313 // Loop for each producer until found
314 for ( *clip
= 0; *clip
< this->count
; *clip
+= 1 )
316 // Increment the total
317 *total
+= this->list
[ *clip
]->frame_count
;
319 // Check if the position indicates that we have found the clip
320 // Note that 0 length clips get skipped automatically
321 if ( *position
< this->list
[ *clip
]->frame_count
)
323 // Found it, now break
324 producer
= this->list
[ *clip
]->producer
;
329 // Decrement position by length of this entry
330 *position
-= this->list
[ *clip
]->frame_count
;
337 /** Seek in the virtual playlist.
340 static mlt_service
mlt_playlist_virtual_seek( mlt_playlist
this, int *progressive
)
342 // Map playlist position to real producer in virtual playlist
343 mlt_position position
= mlt_producer_frame( &this->parent
);
345 // Keep the original position since we change it while iterating through the list
346 mlt_position original
= position
;
348 // Clip index and total
352 // Locate the producer for the position
353 mlt_producer producer
= mlt_playlist_locate( this, &position
, &i
, &total
);
355 // Get the properties
356 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
358 // Get the eof handling
359 char *eof
= mlt_properties_get( properties
, "eof" );
361 // Seek in real producer to relative position
362 if ( producer
!= NULL
)
364 int count
= this->list
[ i
]->frame_count
/ this->list
[ i
]->repeat
;
365 *progressive
= count
== 1;
366 mlt_producer_seek( producer
, (int)position
% count
);
368 else if ( !strcmp( eof
, "pause" ) && total
> 0 )
370 playlist_entry
*entry
= this->list
[ this->count
- 1 ];
371 int count
= entry
->frame_count
/ entry
->repeat
;
372 mlt_producer this_producer
= MLT_PLAYLIST_PRODUCER( this );
373 mlt_producer_seek( this_producer
, original
- 1 );
374 producer
= entry
->producer
;
375 mlt_producer_seek( producer
, (int)entry
->frame_out
% count
);
376 mlt_producer_set_speed( this_producer
, 0 );
377 mlt_producer_set_speed( producer
, 0 );
378 *progressive
= count
== 1;
380 else if ( !strcmp( eof
, "loop" ) && total
> 0 )
382 playlist_entry
*entry
= this->list
[ 0 ];
383 mlt_producer this_producer
= MLT_PLAYLIST_PRODUCER( this );
384 mlt_producer_seek( this_producer
, 0 );
385 producer
= entry
->producer
;
386 mlt_producer_seek( producer
, 0 );
390 producer
= &this->blank
;
393 return MLT_PRODUCER_SERVICE( producer
);
396 /** Invoked when a producer indicates that it has prematurely reached its end.
399 static mlt_producer
mlt_playlist_virtual_set_out( mlt_playlist
this )
401 // Default producer to blank
402 mlt_producer producer
= &this->blank
;
404 // Map playlist position to real producer in virtual playlist
405 mlt_position position
= mlt_producer_frame( &this->parent
);
407 // Loop through the virtual playlist
410 for ( i
= 0; i
< this->count
; i
++ )
412 if ( position
< this->list
[ i
]->frame_count
)
414 // Found it, now break
415 producer
= this->list
[ i
]->producer
;
420 // Decrement position by length of this entry
421 position
-= this->list
[ i
]->frame_count
;
425 // Seek in real producer to relative position
426 if ( i
< this->count
&& this->list
[ i
]->frame_out
!= position
)
428 // Update the frame_count for the changed clip (hmmm)
429 this->list
[ i
]->frame_out
= position
;
430 this->list
[ i
]->frame_count
= this->list
[ i
]->frame_out
- this->list
[ i
]->frame_in
+ 1;
432 // Refresh the playlist
433 mlt_playlist_virtual_refresh( this );
439 /** Obtain the current clips index.
442 int mlt_playlist_current_clip( mlt_playlist
this )
444 // Map playlist position to real producer in virtual playlist
445 mlt_position position
= mlt_producer_frame( &this->parent
);
447 // Loop through the virtual playlist
450 for ( i
= 0; i
< this->count
; i
++ )
452 if ( position
< this->list
[ i
]->frame_count
)
454 // Found it, now break
459 // Decrement position by length of this entry
460 position
-= this->list
[ i
]->frame_count
;
467 /** Obtain the current clips producer.
470 mlt_producer
mlt_playlist_current( mlt_playlist
this )
472 int i
= mlt_playlist_current_clip( this );
473 if ( i
< this->count
)
474 return this->list
[ i
]->producer
;
479 /** Get the position which corresponds to the start of the next clip.
482 mlt_position
mlt_playlist_clip( mlt_playlist
this, mlt_whence whence
, int index
)
484 mlt_position position
= 0;
485 int absolute_clip
= index
;
488 // Determine the absolute clip
491 case mlt_whence_relative_start
:
492 absolute_clip
= index
;
495 case mlt_whence_relative_current
:
496 absolute_clip
= mlt_playlist_current_clip( this ) + index
;
499 case mlt_whence_relative_end
:
500 absolute_clip
= this->count
- index
;
504 // Check that we're in a valid range
505 if ( absolute_clip
< 0 )
507 else if ( absolute_clip
> this->count
)
508 absolute_clip
= this->count
;
510 // Now determine the position
511 for ( i
= 0; i
< absolute_clip
; i
++ )
512 position
+= this->list
[ i
]->frame_count
;
517 /** Get all the info about the clip specified.
520 int mlt_playlist_get_clip_info( mlt_playlist
this, mlt_playlist_clip_info
*info
, int index
)
522 int error
= index
< 0 || index
>= this->count
;
523 memset( info
, 0, sizeof( mlt_playlist_clip_info
) );
526 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ index
]->producer
);
527 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
529 info
->producer
= producer
;
530 info
->cut
= this->list
[ index
]->producer
;
531 info
->start
= mlt_playlist_clip( this, mlt_whence_relative_start
, index
);
532 info
->resource
= mlt_properties_get( properties
, "resource" );
533 info
->frame_in
= this->list
[ index
]->frame_in
;
534 info
->frame_out
= this->list
[ index
]->frame_out
;
535 info
->frame_count
= this->list
[ index
]->frame_count
;
536 info
->repeat
= this->list
[ index
]->repeat
;
537 info
->length
= mlt_producer_get_length( producer
);
538 info
->fps
= mlt_producer_get_fps( producer
);
544 /** Get number of clips in the playlist.
547 int mlt_playlist_count( mlt_playlist
this )
552 /** Clear the playlist.
555 int mlt_playlist_clear( mlt_playlist
this )
558 for ( i
= 0; i
< this->count
; i
++ )
560 mlt_event_close( this->list
[ i
]->event
);
561 mlt_producer_close( this->list
[ i
]->producer
);
564 mlt_properties_set_double( MLT_PLAYLIST_PROPERTIES( this ), "first_fps", 0 );
565 return mlt_playlist_virtual_refresh( this );
568 /** Append a producer to the playlist.
571 int mlt_playlist_append( mlt_playlist
this, mlt_producer producer
)
573 // Append to virtual list
574 return mlt_playlist_virtual_append( this, producer
, 0, mlt_producer_get_playtime( producer
) - 1 );
577 /** Append a producer to the playlist with in/out points.
580 int mlt_playlist_append_io( mlt_playlist
this, mlt_producer producer
, mlt_position in
, mlt_position out
)
582 // Append to virtual list
583 if ( in
!= -1 && out
!= -1 )
584 return mlt_playlist_virtual_append( this, producer
, in
, out
);
586 return mlt_playlist_append( this, producer
);
589 /** Append a blank to the playlist of a given length.
592 int mlt_playlist_blank( mlt_playlist
this, mlt_position length
)
594 // Append to the virtual list
595 return mlt_playlist_virtual_append( this, &this->blank
, 0, length
);
598 /** Insert a producer into the playlist.
601 int mlt_playlist_insert( mlt_playlist
this, mlt_producer producer
, int where
, mlt_position in
, mlt_position out
)
604 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
605 mlt_playlist_append_io( this, producer
, in
, out
);
607 // Move to the position specified
608 mlt_playlist_move( this, this->count
- 1, where
);
609 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
611 return mlt_playlist_virtual_refresh( this );
614 /** Remove an entry in the playlist.
617 int mlt_playlist_remove( mlt_playlist
this, int where
)
619 int error
= where
< 0 || where
>= this->count
;
620 if ( error
== 0 && mlt_playlist_unmix( this, where
) != 0 )
622 // We need to know the current clip and the position within the playlist
623 int current
= mlt_playlist_current_clip( this );
624 mlt_position position
= mlt_producer_position( MLT_PLAYLIST_PRODUCER( this ) );
626 // We need all the details about the clip we're removing
627 mlt_playlist_clip_info where_info
;
628 playlist_entry
*entry
= this->list
[ where
];
629 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( entry
->producer
);
635 mlt_playlist_get_clip_info( this, &where_info
, where
);
637 // Make sure the clip to be removed is valid and correct if necessary
640 if ( where
>= this->count
)
641 where
= this->count
- 1;
643 // Reorganise the list
644 for ( i
= where
+ 1; i
< this->count
; i
++ )
645 this->list
[ i
- 1 ] = this->list
[ i
];
648 if ( entry
->preservation_hack
== 0 )
650 // Decouple from mix_in/out if necessary
651 if ( mlt_properties_get_data( properties
, "mix_in", NULL
) != NULL
)
653 mlt_properties mix
= mlt_properties_get_data( properties
, "mix_in", NULL
);
654 mlt_properties_set_data( mix
, "mix_out", NULL
, 0, NULL
, NULL
);
656 if ( mlt_properties_get_data( properties
, "mix_out", NULL
) != NULL
)
658 mlt_properties mix
= mlt_properties_get_data( properties
, "mix_out", NULL
);
659 mlt_properties_set_data( mix
, "mix_in", NULL
, 0, NULL
, NULL
);
662 if ( mlt_properties_ref_count( MLT_PRODUCER_PROPERTIES( entry
->producer
) ) == 1 )
663 mlt_producer_clear( entry
->producer
);
666 // Close the producer associated to the clip info
667 mlt_event_close( entry
->event
);
668 mlt_producer_close( entry
->producer
);
671 if ( where
== current
)
672 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), where_info
.start
);
673 else if ( where
< current
&& this->count
> 0 )
674 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), position
- where_info
.frame_count
);
675 else if ( this->count
== 0 )
676 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), 0 );
681 // Refresh the playlist
682 mlt_playlist_virtual_refresh( this );
688 /** Move an entry in the playlist.
691 int mlt_playlist_move( mlt_playlist
this, int src
, int dest
)
695 /* We need to ensure that the requested indexes are valid and correct it as necessary */
698 if ( src
>= this->count
)
699 src
= this->count
- 1;
703 if ( dest
>= this->count
)
704 dest
= this->count
- 1;
706 if ( src
!= dest
&& this->count
> 1 )
708 int current
= mlt_playlist_current_clip( this );
709 mlt_position position
= mlt_producer_position( MLT_PLAYLIST_PRODUCER( this ) );
710 playlist_entry
*src_entry
= NULL
;
712 // We need all the details about the current clip
713 mlt_playlist_clip_info current_info
;
715 mlt_playlist_get_clip_info( this, ¤t_info
, current
);
716 position
-= current_info
.start
;
718 if ( current
== src
)
720 else if ( current
> src
&& current
< dest
)
722 else if ( current
== dest
)
725 src_entry
= this->list
[ src
];
728 for ( i
= src
; i
> dest
; i
-- )
729 this->list
[ i
] = this->list
[ i
- 1 ];
733 for ( i
= src
; i
< dest
; i
++ )
734 this->list
[ i
] = this->list
[ i
+ 1 ];
736 this->list
[ dest
] = src_entry
;
738 mlt_playlist_get_clip_info( this, ¤t_info
, current
);
739 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), current_info
.start
+ position
);
740 mlt_playlist_virtual_refresh( this );
746 /** Repeat the specified clip n times.
749 int mlt_playlist_repeat_clip( mlt_playlist
this, int clip
, int repeat
)
751 int error
= repeat
< 1 || clip
< 0 || clip
>= this->count
;
754 playlist_entry
*entry
= this->list
[ clip
];
755 entry
->repeat
= repeat
;
756 mlt_playlist_virtual_refresh( this );
761 /** Resize the specified clip.
764 int mlt_playlist_resize_clip( mlt_playlist
this, int clip
, mlt_position in
, mlt_position out
)
766 int error
= clip
< 0 || clip
>= this->count
;
767 if ( error
== 0 && mlt_playlist_resize_mix( this, clip
, in
, out
) != 0 )
769 playlist_entry
*entry
= this->list
[ clip
];
770 mlt_producer producer
= entry
->producer
;
771 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
773 mlt_events_block( properties
, properties
);
775 if ( mlt_producer_is_blank( producer
) )
777 // Make sure the blank is long enough to accomodate the length specified
778 if ( out
- in
+ 1 > mlt_producer_get_length( &this->blank
) )
780 mlt_properties blank_props
= MLT_PRODUCER_PROPERTIES( &this->blank
);
781 mlt_properties_set_int( blank_props
, "length", out
- in
+ 1 );
782 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( producer
), "length", out
- in
+ 1 );
783 mlt_producer_set_in_and_out( &this->blank
, 0, out
- in
);
789 if ( out
<= -1 || out
>= mlt_producer_get_length( producer
) )
790 out
= mlt_producer_get_length( producer
) - 1;
799 mlt_producer_set_in_and_out( producer
, in
, out
);
800 mlt_events_unblock( properties
, properties
);
801 mlt_playlist_virtual_refresh( this );
806 /** Split a clip on the playlist at the given position.
809 int mlt_playlist_split( mlt_playlist
this, int clip
, mlt_position position
)
811 int error
= clip
< 0 || clip
>= this->count
;
814 playlist_entry
*entry
= this->list
[ clip
];
815 position
= position
< 0 ? entry
->frame_count
+ position
- 1 : position
;
816 if ( position
>= 0 && position
< entry
->frame_count
- 1 )
818 int in
= entry
->frame_in
;
819 int out
= entry
->frame_out
;
820 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
821 mlt_playlist_resize_clip( this, clip
, in
, in
+ position
);
822 if ( !mlt_producer_is_blank( entry
->producer
) )
825 mlt_properties entry_properties
= MLT_PRODUCER_PROPERTIES( entry
->producer
);
826 mlt_producer split
= mlt_producer_cut( entry
->producer
, in
+ position
+ 1, out
);
827 mlt_properties split_properties
= MLT_PRODUCER_PROPERTIES( split
);
828 mlt_playlist_insert( this, split
, clip
+ 1, 0, -1 );
829 for ( i
= 0; i
< mlt_properties_count( entry_properties
); i
++ )
831 char *name
= mlt_properties_get_name( entry_properties
, i
);
832 if ( name
!= NULL
&& !strncmp( name
, "meta.", 5 ) )
833 mlt_properties_set( split_properties
, name
, mlt_properties_get_value( entry_properties
, i
) );
835 mlt_producer_close( split
);
839 mlt_playlist_insert( this, &this->blank
, clip
+ 1, 0, out
- position
- 1 );
841 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
842 mlt_playlist_virtual_refresh( this );
852 /** Split the playlist at the absolute position.
855 int mlt_playlist_split_at( mlt_playlist
this, mlt_position position
, int left
)
857 int result
= this == NULL ?
-1 : 0;
860 if ( position
>= 0 && position
< mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) ) )
862 int clip
= mlt_playlist_get_clip_index_at( this, position
);
863 mlt_playlist_clip_info info
;
864 mlt_playlist_get_clip_info( this, &info
, clip
);
865 if ( left
&& position
!= info
.start
)
866 mlt_playlist_split( this, clip
, position
- info
.start
- 1 );
868 mlt_playlist_split( this, clip
, position
- info
.start
);
871 else if ( position
<= 0 )
877 result
= mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
883 /** Join 1 or more consecutive clips.
886 int mlt_playlist_join( mlt_playlist
this, int clip
, int count
, int merge
)
888 int error
= clip
< 0 || clip
>= this->count
;
892 mlt_playlist new_clip
= mlt_playlist_init( );
893 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
894 if ( clip
+ count
>= this->count
)
895 count
= this->count
- clip
- 1;
896 for ( i
= 0; i
<= count
; i
++ )
898 playlist_entry
*entry
= this->list
[ clip
];
899 mlt_playlist_append( new_clip
, entry
->producer
);
900 mlt_playlist_repeat_clip( new_clip
, i
, entry
->repeat
);
901 entry
->preservation_hack
= 1;
902 mlt_playlist_remove( this, clip
);
904 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
905 mlt_playlist_insert( this, MLT_PLAYLIST_PRODUCER( new_clip
), clip
, 0, -1 );
906 mlt_playlist_close( new_clip
);
911 /** Mix consecutive clips for a specified length and apply transition if specified.
914 int mlt_playlist_mix( mlt_playlist
this, int clip
, int length
, mlt_transition transition
)
916 int error
= ( clip
< 0 || clip
+ 1 >= this->count
);
919 playlist_entry
*clip_a
= this->list
[ clip
];
920 playlist_entry
*clip_b
= this->list
[ clip
+ 1 ];
921 mlt_producer track_a
= NULL
;
922 mlt_producer track_b
= NULL
;
923 mlt_tractor tractor
= mlt_tractor_new( );
924 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
926 // Check length is valid for both clips and resize if necessary.
927 int max_size
= clip_a
->frame_count
> clip_b
->frame_count ? clip_a
->frame_count
: clip_b
->frame_count
;
928 length
= length
> max_size ? max_size
: length
;
930 // Create the a and b tracks/cuts if necessary - note that no cuts are required if the length matches
931 if ( length
!= clip_a
->frame_count
)
932 track_a
= mlt_producer_cut( clip_a
->producer
, clip_a
->frame_out
- length
+ 1, clip_a
->frame_out
);
934 track_a
= clip_a
->producer
;
936 if ( length
!= clip_b
->frame_count
)
937 track_b
= mlt_producer_cut( clip_b
->producer
, clip_b
->frame_in
, clip_b
->frame_in
+ length
- 1 );
939 track_b
= clip_b
->producer
;
941 // Set the tracks on the tractor
942 mlt_tractor_set_track( tractor
, track_a
, 0 );
943 mlt_tractor_set_track( tractor
, track_b
, 1 );
945 // Insert the mix object into the playlist
946 mlt_playlist_insert( this, MLT_TRACTOR_PRODUCER( tractor
), clip
+ 1, -1, -1 );
947 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mlt_mix", tractor
, 0, NULL
, NULL
);
949 // Attach the transition
950 if ( transition
!= NULL
)
952 mlt_field field
= mlt_tractor_field( tractor
);
953 mlt_field_plant_transition( field
, transition
, 0, 1 );
954 mlt_transition_set_in_and_out( transition
, 0, length
- 1 );
957 // Close our references to the tracks if we created new cuts above (the tracks can still be used here)
958 if ( track_a
!= clip_a
->producer
)
959 mlt_producer_close( track_a
);
960 if ( track_b
!= clip_b
->producer
)
961 mlt_producer_close( track_b
);
963 // Check if we have anything left on the right hand clip
964 if ( track_b
== clip_b
->producer
)
966 clip_b
->preservation_hack
= 1;
967 mlt_playlist_remove( this, clip
+ 2 );
969 else if ( clip_b
->frame_out
- clip_b
->frame_in
> length
)
971 mlt_playlist_resize_clip( this, clip
+ 2, clip_b
->frame_in
+ length
, clip_b
->frame_out
);
972 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_b
->producer
), "mix_in", tractor
, 0, NULL
, NULL
);
973 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mix_out", clip_b
->producer
, 0, NULL
, NULL
);
977 mlt_producer_clear( clip_b
->producer
);
978 mlt_playlist_remove( this, clip
+ 2 );
981 // Check if we have anything left on the left hand clip
982 if ( track_a
== clip_a
->producer
)
984 clip_a
->preservation_hack
= 1;
985 mlt_playlist_remove( this, clip
);
987 else if ( clip_a
->frame_out
- clip_a
->frame_in
> length
)
989 mlt_playlist_resize_clip( this, clip
, clip_a
->frame_in
, clip_a
->frame_out
- length
);
990 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_a
->producer
), "mix_out", tractor
, 0, NULL
, NULL
);
991 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mix_in", clip_a
->producer
, 0, NULL
, NULL
);
995 mlt_producer_clear( clip_a
->producer
);
996 mlt_playlist_remove( this, clip
);
999 // Unblock and force a fire off of change events to listeners
1000 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1001 mlt_playlist_virtual_refresh( this );
1002 mlt_tractor_close( tractor
);
1007 /** Add a transition to an existing mix.
1010 int mlt_playlist_mix_add( mlt_playlist
this, int clip
, mlt_transition transition
)
1012 mlt_producer producer
= mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip
) );
1013 mlt_properties properties
= producer
!= NULL ?
MLT_PRODUCER_PROPERTIES( producer
) : NULL
;
1014 mlt_tractor tractor
= properties
!= NULL ?
mlt_properties_get_data( properties
, "mlt_mix", NULL
) : NULL
;
1015 int error
= transition
== NULL
|| tractor
== NULL
;
1018 mlt_field field
= mlt_tractor_field( tractor
);
1019 mlt_field_plant_transition( field
, transition
, 0, 1 );
1020 mlt_transition_set_in_and_out( transition
, 0, this->list
[ clip
]->frame_count
- 1 );
1025 /** Return the clip at the clip index.
1028 mlt_producer
mlt_playlist_get_clip( mlt_playlist
this, int clip
)
1030 if ( clip
>= 0 && clip
< this->count
)
1031 return this->list
[ clip
]->producer
;
1035 /** Return the clip at the specified position.
1038 mlt_producer
mlt_playlist_get_clip_at( mlt_playlist
this, mlt_position position
)
1040 int index
= 0, total
= 0;
1041 return mlt_playlist_locate( this, &position
, &index
, &total
);
1044 /** Return the clip index of the specified position.
1047 int mlt_playlist_get_clip_index_at( mlt_playlist
this, mlt_position position
)
1049 int index
= 0, total
= 0;
1050 mlt_playlist_locate( this, &position
, &index
, &total
);
1054 /** Determine if the clip is a mix.
1057 int mlt_playlist_clip_is_mix( mlt_playlist
this, int clip
)
1059 mlt_producer producer
= mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip
) );
1060 mlt_properties properties
= producer
!= NULL ?
MLT_PRODUCER_PROPERTIES( producer
) : NULL
;
1061 mlt_tractor tractor
= properties
!= NULL ?
mlt_properties_get_data( properties
, "mlt_mix", NULL
) : NULL
;
1062 return tractor
!= NULL
;
1065 /** Remove a mixed clip - ensure that the cuts included in the mix find their way
1066 back correctly on to the playlist.
1069 static int mlt_playlist_unmix( mlt_playlist
this, int clip
)
1071 int error
= ( clip
< 0 || clip
>= this->count
);
1073 // Ensure that the clip request is actually a mix
1076 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ clip
]->producer
);
1077 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
1078 error
= mlt_properties_get_data( properties
, "mlt_mix", NULL
) == NULL
||
1079 this->list
[ clip
]->preservation_hack
;
1084 playlist_entry
*mix
= this->list
[ clip
];
1085 mlt_tractor tractor
= ( mlt_tractor
)mlt_producer_cut_parent( mix
->producer
);
1086 mlt_properties properties
= MLT_TRACTOR_PROPERTIES( tractor
);
1087 mlt_producer clip_a
= mlt_properties_get_data( properties
, "mix_in", NULL
);
1088 mlt_producer clip_b
= mlt_properties_get_data( properties
, "mix_out", NULL
);
1089 int length
= mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor
) );
1090 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
1092 if ( clip_a
!= NULL
)
1094 mlt_producer_set_in_and_out( clip_a
, mlt_producer_get_in( clip_a
), mlt_producer_get_out( clip_a
) + length
);
1098 mlt_producer cut
= mlt_tractor_get_track( tractor
, 0 );
1099 mlt_playlist_insert( this, cut
, clip
, -1, -1 );
1103 if ( clip_b
!= NULL
)
1105 mlt_producer_set_in_and_out( clip_b
, mlt_producer_get_in( clip_b
) - length
, mlt_producer_get_out( clip_b
) );
1109 mlt_producer cut
= mlt_tractor_get_track( tractor
, 1 );
1110 mlt_playlist_insert( this, cut
, clip
+ 1, -1, -1 );
1113 mlt_properties_set_data( properties
, "mlt_mix", NULL
, 0, NULL
, NULL
);
1114 mlt_playlist_remove( this, clip
);
1115 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1116 mlt_playlist_virtual_refresh( this );
1121 static int mlt_playlist_resize_mix( mlt_playlist
this, int clip
, int in
, int out
)
1123 int error
= ( clip
< 0 || clip
>= this->count
);
1125 // Ensure that the clip request is actually a mix
1128 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ clip
]->producer
);
1129 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
1130 error
= mlt_properties_get_data( properties
, "mlt_mix", NULL
) == NULL
;
1135 playlist_entry
*mix
= this->list
[ clip
];
1136 mlt_tractor tractor
= ( mlt_tractor
)mlt_producer_cut_parent( mix
->producer
);
1137 mlt_properties properties
= MLT_TRACTOR_PROPERTIES( tractor
);
1138 mlt_producer clip_a
= mlt_properties_get_data( properties
, "mix_in", NULL
);
1139 mlt_producer clip_b
= mlt_properties_get_data( properties
, "mix_out", NULL
);
1140 mlt_producer track_a
= mlt_tractor_get_track( tractor
, 0 );
1141 mlt_producer track_b
= mlt_tractor_get_track( tractor
, 1 );
1142 int length
= out
- in
+ 1;
1143 int length_diff
= length
- mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor
) );
1144 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
1146 if ( clip_a
!= NULL
)
1147 mlt_producer_set_in_and_out( clip_a
, mlt_producer_get_in( clip_a
), mlt_producer_get_out( clip_a
) - length_diff
);
1149 if ( clip_b
!= NULL
)
1150 mlt_producer_set_in_and_out( clip_b
, mlt_producer_get_in( clip_b
) + length_diff
, mlt_producer_get_out( clip_b
) );
1152 mlt_producer_set_in_and_out( track_a
, mlt_producer_get_in( track_a
) - length_diff
, mlt_producer_get_out( track_a
) );
1153 mlt_producer_set_in_and_out( track_b
, mlt_producer_get_in( track_b
), mlt_producer_get_out( track_b
) + length_diff
);
1154 mlt_producer_set_in_and_out( MLT_MULTITRACK_PRODUCER( mlt_tractor_multitrack( tractor
) ), in
, out
);
1155 mlt_producer_set_in_and_out( MLT_TRACTOR_PRODUCER( tractor
), in
, out
);
1156 mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( mix
->producer
), "length", out
- in
+ 1 );
1157 mlt_producer_set_in_and_out( mix
->producer
, in
, out
);
1159 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1160 mlt_playlist_virtual_refresh( this );
1165 /** Consolodate adjacent blank producers.
1168 void mlt_playlist_consolidate_blanks( mlt_playlist
this, int keep_length
)
1173 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1175 mlt_events_block( properties
, properties
);
1176 for ( i
= 1; i
< this->count
; i
++ )
1178 playlist_entry
*left
= this->list
[ i
- 1 ];
1179 playlist_entry
*right
= this->list
[ i
];
1181 if ( mlt_producer_is_blank( left
->producer
) && mlt_producer_is_blank( right
->producer
) )
1183 mlt_playlist_resize_clip( this, i
- 1, 0, left
->frame_count
+ right
->frame_count
- 1 );
1184 mlt_playlist_remove( this, i
-- );
1188 if ( !keep_length
&& this->count
> 0 )
1190 playlist_entry
*last
= this->list
[ this->count
- 1 ];
1191 if ( mlt_producer_is_blank( last
->producer
) )
1192 mlt_playlist_remove( this, this->count
- 1 );
1195 mlt_events_unblock( properties
, properties
);
1196 mlt_playlist_virtual_refresh( this );
1200 /** Determine if the specified clip index is a blank.
1203 int mlt_playlist_is_blank( mlt_playlist
this, int clip
)
1205 return this == NULL
|| mlt_producer_is_blank( mlt_playlist_get_clip( this, clip
) );
1208 /** Determine if the specified position is a blank.
1211 int mlt_playlist_is_blank_at( mlt_playlist
this, mlt_position position
)
1213 return this == NULL
|| mlt_producer_is_blank( mlt_playlist_get_clip_at( this, position
) );
1216 /** Replace the specified clip with a blank and return the clip.
1219 mlt_producer
mlt_playlist_replace_with_blank( mlt_playlist
this, int clip
)
1221 mlt_producer producer
= NULL
;
1222 if ( !mlt_playlist_is_blank( this, clip
) )
1224 playlist_entry
*entry
= this->list
[ clip
];
1225 int in
= entry
->frame_in
;
1226 int out
= entry
->frame_out
;
1227 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1228 producer
= entry
->producer
;
1229 mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer
) );
1230 mlt_events_block( properties
, properties
);
1231 mlt_playlist_remove( this, clip
);
1232 mlt_playlist_blank( this, out
- in
);
1233 mlt_playlist_move( this, this->count
- 1, clip
);
1234 mlt_events_unblock( properties
, properties
);
1235 mlt_playlist_virtual_refresh( this );
1236 mlt_producer_set_in_and_out( producer
, in
, out
);
1241 void mlt_playlist_insert_blank( mlt_playlist
this, int clip
, int length
)
1243 if ( this != NULL
&& length
>= 0 )
1245 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1246 mlt_events_block( properties
, properties
);
1247 mlt_playlist_blank( this, length
);
1248 mlt_playlist_move( this, this->count
- 1, clip
);
1249 mlt_events_unblock( properties
, properties
);
1250 mlt_playlist_virtual_refresh( this );
1254 void mlt_playlist_pad_blanks( mlt_playlist
this, mlt_position position
, int length
, int find
)
1256 if ( this != NULL
&& length
!= 0 )
1258 int clip
= mlt_playlist_get_clip_index_at( this, position
);
1259 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1260 mlt_events_block( properties
, properties
);
1261 if ( find
&& clip
< this->count
&& !mlt_playlist_is_blank( this, clip
) )
1263 if ( clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1265 mlt_playlist_clip_info info
;
1266 mlt_playlist_get_clip_info( this, &info
, clip
);
1267 if ( info
.frame_out
+ length
> info
.frame_in
)
1268 mlt_playlist_resize_clip( this, clip
, info
.frame_in
, info
.frame_out
+ length
);
1270 mlt_playlist_remove( this, clip
);
1272 else if ( find
&& clip
< this->count
&& length
> 0 )
1274 mlt_playlist_insert_blank( this, clip
, length
);
1276 mlt_events_unblock( properties
, properties
);
1277 mlt_playlist_virtual_refresh( this );
1281 int mlt_playlist_insert_at( mlt_playlist
this, mlt_position position
, mlt_producer producer
, int mode
)
1283 int ret
= this == NULL
|| position
< 0 || producer
== NULL
;
1286 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1287 int length
= mlt_producer_get_playtime( producer
);
1288 int clip
= mlt_playlist_get_clip_index_at( this, position
);
1289 mlt_playlist_clip_info info
;
1290 mlt_playlist_get_clip_info( this, &info
, clip
);
1291 mlt_events_block( properties
, this );
1292 if ( clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1294 // Split and move to new clip if need be
1295 if ( position
!= info
.start
&& mlt_playlist_split( this, clip
, position
- info
.start
) == 0 )
1296 mlt_playlist_get_clip_info( this, &info
, ++ clip
);
1298 // Split again if need be
1299 if ( length
< info
.frame_count
)
1300 mlt_playlist_split( this, clip
, length
- 1 );
1303 mlt_playlist_remove( this, clip
);
1306 mlt_playlist_insert( this, producer
, clip
, -1, -1 );
1309 else if ( clip
< this->count
)
1311 if ( position
> info
.start
+ info
.frame_count
/ 2 )
1313 if ( mode
== 1 && clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1315 mlt_playlist_get_clip_info( this, &info
, clip
);
1316 if ( length
< info
.frame_count
)
1317 mlt_playlist_split( this, clip
, length
);
1318 mlt_playlist_remove( this, clip
);
1320 mlt_playlist_insert( this, producer
, clip
, -1, -1 );
1326 mlt_playlist_blank( this, position
- mlt_properties_get_int( properties
, "length" ) );
1327 mlt_playlist_append( this, producer
);
1328 ret
= this->count
- 1;
1330 mlt_events_unblock( properties
, this );
1331 mlt_playlist_virtual_refresh( this );
1340 int mlt_playlist_clip_start( mlt_playlist
this, int clip
)
1342 mlt_playlist_clip_info info
;
1343 if ( mlt_playlist_get_clip_info( this, &info
, clip
) == 0 )
1345 return clip
< 0 ?
0 : mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
1348 int mlt_playlist_clip_length( mlt_playlist
this, int clip
)
1350 mlt_playlist_clip_info info
;
1351 if ( mlt_playlist_get_clip_info( this, &info
, clip
) == 0 )
1352 return info
.frame_count
;
1356 int mlt_playlist_blanks_from( mlt_playlist
this, int clip
, int bounded
)
1359 mlt_playlist_clip_info info
;
1360 if ( this != NULL
&& clip
< this->count
)
1362 mlt_playlist_get_clip_info( this, &info
, clip
);
1363 if ( mlt_playlist_is_blank( this, clip
) )
1364 count
+= info
.frame_count
;
1366 bounded
= this->count
;
1367 for ( clip
++; clip
< this->count
&& bounded
>= 0; clip
++ )
1369 mlt_playlist_get_clip_info( this, &info
, clip
);
1370 if ( mlt_playlist_is_blank( this, clip
) )
1371 count
+= info
.frame_count
;
1379 int mlt_playlist_remove_region( mlt_playlist
this, mlt_position position
, int length
)
1381 int index
= mlt_playlist_get_clip_index_at( this, position
);
1382 if ( index
>= 0 && index
< this->count
)
1384 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1385 int clip_start
= mlt_playlist_clip_start( this, index
);
1386 int clip_length
= mlt_playlist_clip_length( this, index
);
1387 int list_length
= mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
1388 mlt_events_block( properties
, this );
1390 if ( position
+ length
> list_length
)
1391 length
-= ( position
+ length
- list_length
);
1393 if ( clip_start
< position
)
1395 mlt_playlist_split( this, index
++, position
- clip_start
);
1396 clip_length
-= position
- clip_start
;
1401 if ( mlt_playlist_clip_length( this, index
) > length
)
1402 mlt_playlist_split( this, index
, length
);
1403 length
-= mlt_playlist_clip_length( this, index
);
1404 mlt_playlist_remove( this, index
);
1407 mlt_playlist_consolidate_blanks( this, 0 );
1408 mlt_events_unblock( properties
, this );
1409 mlt_playlist_virtual_refresh( this );
1411 // Just to be sure, we'll get the clip index again...
1412 index
= mlt_playlist_get_clip_index_at( this, position
);
1417 int mlt_playlist_move_region( mlt_playlist
this, mlt_position position
, int length
, int new_position
)
1425 /** Get the current frame.
1428 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
)
1430 // Check that we have a producer
1431 if ( producer
== NULL
)
1433 *frame
= mlt_frame_init( );
1437 // Get this mlt_playlist
1438 mlt_playlist
this = producer
->child
;
1440 // Need to ensure the frame is deinterlaced when repeating 1 frame
1441 int progressive
= 0;
1443 // Get the real producer
1444 mlt_service real
= mlt_playlist_virtual_seek( this, &progressive
);
1446 // Check that we have a producer
1449 *frame
= mlt_frame_init( );
1454 if ( !mlt_properties_get_int( MLT_SERVICE_PROPERTIES( real
), "meta.fx_cut" ) )
1456 mlt_service_get_frame( real
, frame
, index
);
1460 mlt_producer parent
= mlt_producer_cut_parent( ( mlt_producer
)real
);
1461 *frame
= mlt_frame_init( );
1462 mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame
), "fx_cut", 1 );
1463 mlt_frame_push_service( *frame
, NULL
);
1464 mlt_frame_push_audio( *frame
, NULL
);
1465 mlt_service_apply_filters( MLT_PRODUCER_SERVICE( parent
), *frame
, 0 );
1466 mlt_service_apply_filters( real
, *frame
, 0 );
1467 mlt_deque_pop_front( MLT_FRAME_IMAGE_STACK( *frame
) );
1468 mlt_deque_pop_front( MLT_FRAME_AUDIO_STACK( *frame
) );
1471 // Check if we're at the end of the clip
1472 mlt_properties properties
= MLT_FRAME_PROPERTIES( *frame
);
1473 if ( mlt_properties_get_int( properties
, "end_of_clip" ) )
1474 mlt_playlist_virtual_set_out( this );
1476 // Set the consumer progressive property
1479 mlt_properties_set_int( properties
, "consumer_deinterlace", progressive
);
1480 mlt_properties_set_int( properties
, "test_audio", 1 );
1483 // Check for notifier and call with appropriate argument
1484 mlt_properties playlist_properties
= MLT_PRODUCER_PROPERTIES( producer
);
1485 void ( *notifier
)( void * ) = mlt_properties_get_data( playlist_properties
, "notifier", NULL
);
1486 if ( notifier
!= NULL
)
1488 void *argument
= mlt_properties_get_data( playlist_properties
, "notifier_arg", NULL
);
1489 notifier( argument
);
1492 // Update position on the frame we're creating
1493 mlt_frame_set_position( *frame
, mlt_producer_frame( producer
) );
1495 // Position ourselves on the next frame
1496 mlt_producer_prepare_next( producer
);
1501 /** Close the playlist.
1504 void mlt_playlist_close( mlt_playlist
this )
1506 if ( this != NULL
&& mlt_properties_dec_ref( MLT_PLAYLIST_PROPERTIES( this ) ) <= 0 )
1509 this->parent
.close
= NULL
;
1510 for ( i
= 0; i
< this->count
; i
++ )
1512 mlt_event_close( this->list
[ i
]->event
);
1513 mlt_producer_close( this->list
[ i
]->producer
);
1514 free( this->list
[ i
] );
1516 mlt_producer_close( &this->blank
);
1517 mlt_producer_close( &this->parent
);