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 // Automatically close previous producers if requested
337 if ( i
> 1 // keep immediate previous in case app wants to get info about what just finished
338 && position
< 2 // tolerate off-by-one error on going to next clip
339 && mlt_properties_get_int( properties
, "autoclose" ) )
342 // They might have jumped ahead!
343 for ( j
= 0; j
< i
- 1; j
++ )
345 mlt_service_lock( MLT_PRODUCER_SERVICE( this->list
[ j
]->producer
) );
346 mlt_producer p
= this->list
[ j
]->producer
;
349 mlt_properties p_properties
= MLT_PRODUCER_PROPERTIES( p
);
350 // Prevent closing previously autoclosed to maintain integrity of references
351 if ( ! mlt_properties_get_int( p_properties
, "_autoclosed" ) )
353 mlt_properties_set_int( p_properties
, "_autoclosed", 1 );
354 mlt_service_unlock( MLT_PRODUCER_SERVICE( p
) );
355 mlt_producer_close( p
);
356 this->list
[ j
]->producer
= NULL
;
360 mlt_service_unlock( MLT_PRODUCER_SERVICE( p
) );
366 // Get the eof handling
367 char *eof
= mlt_properties_get( properties
, "eof" );
369 // Seek in real producer to relative position
370 if ( producer
!= NULL
)
372 int count
= this->list
[ i
]->frame_count
/ this->list
[ i
]->repeat
;
373 *progressive
= count
== 1;
374 mlt_producer_seek( producer
, (int)position
% count
);
376 else if ( !strcmp( eof
, "pause" ) && total
> 0 )
378 playlist_entry
*entry
= this->list
[ this->count
- 1 ];
379 int count
= entry
->frame_count
/ entry
->repeat
;
380 mlt_producer this_producer
= MLT_PLAYLIST_PRODUCER( this );
381 mlt_producer_seek( this_producer
, original
- 1 );
382 producer
= entry
->producer
;
383 mlt_producer_seek( producer
, (int)entry
->frame_out
% count
);
384 mlt_producer_set_speed( this_producer
, 0 );
385 mlt_producer_set_speed( producer
, 0 );
386 *progressive
= count
== 1;
388 else if ( !strcmp( eof
, "loop" ) && total
> 0 )
390 playlist_entry
*entry
= this->list
[ 0 ];
391 mlt_producer this_producer
= MLT_PLAYLIST_PRODUCER( this );
392 mlt_producer_seek( this_producer
, 0 );
393 producer
= entry
->producer
;
394 mlt_producer_seek( producer
, 0 );
398 producer
= &this->blank
;
401 return MLT_PRODUCER_SERVICE( producer
);
404 /** Invoked when a producer indicates that it has prematurely reached its end.
407 static mlt_producer
mlt_playlist_virtual_set_out( mlt_playlist
this )
409 // Default producer to blank
410 mlt_producer producer
= &this->blank
;
412 // Map playlist position to real producer in virtual playlist
413 mlt_position position
= mlt_producer_frame( &this->parent
);
415 // Loop through the virtual playlist
418 for ( i
= 0; i
< this->count
; i
++ )
420 if ( position
< this->list
[ i
]->frame_count
)
422 // Found it, now break
423 producer
= this->list
[ i
]->producer
;
428 // Decrement position by length of this entry
429 position
-= this->list
[ i
]->frame_count
;
433 // Seek in real producer to relative position
434 if ( i
< this->count
&& this->list
[ i
]->frame_out
!= position
)
436 // Update the frame_count for the changed clip (hmmm)
437 this->list
[ i
]->frame_out
= position
;
438 this->list
[ i
]->frame_count
= this->list
[ i
]->frame_out
- this->list
[ i
]->frame_in
+ 1;
440 // Refresh the playlist
441 mlt_playlist_virtual_refresh( this );
447 /** Obtain the current clips index.
450 int mlt_playlist_current_clip( mlt_playlist
this )
452 // Map playlist position to real producer in virtual playlist
453 mlt_position position
= mlt_producer_frame( &this->parent
);
455 // Loop through the virtual playlist
458 for ( i
= 0; i
< this->count
; i
++ )
460 if ( position
< this->list
[ i
]->frame_count
)
462 // Found it, now break
467 // Decrement position by length of this entry
468 position
-= this->list
[ i
]->frame_count
;
475 /** Obtain the current clips producer.
478 mlt_producer
mlt_playlist_current( mlt_playlist
this )
480 int i
= mlt_playlist_current_clip( this );
481 if ( i
< this->count
)
482 return this->list
[ i
]->producer
;
487 /** Get the position which corresponds to the start of the next clip.
490 mlt_position
mlt_playlist_clip( mlt_playlist
this, mlt_whence whence
, int index
)
492 mlt_position position
= 0;
493 int absolute_clip
= index
;
496 // Determine the absolute clip
499 case mlt_whence_relative_start
:
500 absolute_clip
= index
;
503 case mlt_whence_relative_current
:
504 absolute_clip
= mlt_playlist_current_clip( this ) + index
;
507 case mlt_whence_relative_end
:
508 absolute_clip
= this->count
- index
;
512 // Check that we're in a valid range
513 if ( absolute_clip
< 0 )
515 else if ( absolute_clip
> this->count
)
516 absolute_clip
= this->count
;
518 // Now determine the position
519 for ( i
= 0; i
< absolute_clip
; i
++ )
520 position
+= this->list
[ i
]->frame_count
;
525 /** Get all the info about the clip specified.
528 int mlt_playlist_get_clip_info( mlt_playlist
this, mlt_playlist_clip_info
*info
, int index
)
530 int error
= index
< 0 || index
>= this->count
;
531 memset( info
, 0, sizeof( mlt_playlist_clip_info
) );
534 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ index
]->producer
);
535 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
537 info
->producer
= producer
;
538 info
->cut
= this->list
[ index
]->producer
;
539 info
->start
= mlt_playlist_clip( this, mlt_whence_relative_start
, index
);
540 info
->resource
= mlt_properties_get( properties
, "resource" );
541 info
->frame_in
= this->list
[ index
]->frame_in
;
542 info
->frame_out
= this->list
[ index
]->frame_out
;
543 info
->frame_count
= this->list
[ index
]->frame_count
;
544 info
->repeat
= this->list
[ index
]->repeat
;
545 info
->length
= mlt_producer_get_length( producer
);
546 info
->fps
= mlt_producer_get_fps( producer
);
552 /** Get number of clips in the playlist.
555 int mlt_playlist_count( mlt_playlist
this )
560 /** Clear the playlist.
563 int mlt_playlist_clear( mlt_playlist
this )
566 for ( i
= 0; i
< this->count
; i
++ )
568 mlt_event_close( this->list
[ i
]->event
);
569 mlt_producer_close( this->list
[ i
]->producer
);
572 return mlt_playlist_virtual_refresh( this );
575 /** Append a producer to the playlist.
578 int mlt_playlist_append( mlt_playlist
this, mlt_producer producer
)
580 // Append to virtual list
581 return mlt_playlist_virtual_append( this, producer
, 0, mlt_producer_get_playtime( producer
) - 1 );
584 /** Append a producer to the playlist with in/out points.
587 int mlt_playlist_append_io( mlt_playlist
this, mlt_producer producer
, mlt_position in
, mlt_position out
)
589 // Append to virtual list
590 if ( in
!= -1 && out
!= -1 )
591 return mlt_playlist_virtual_append( this, producer
, in
, out
);
593 return mlt_playlist_append( this, producer
);
596 /** Append a blank to the playlist of a given length.
599 int mlt_playlist_blank( mlt_playlist
this, mlt_position length
)
601 // Append to the virtual list
602 return mlt_playlist_virtual_append( this, &this->blank
, 0, length
);
605 /** Insert a producer into the playlist.
608 int mlt_playlist_insert( mlt_playlist
this, mlt_producer producer
, int where
, mlt_position in
, mlt_position out
)
611 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
612 mlt_playlist_append_io( this, producer
, in
, out
);
614 // Move to the position specified
615 mlt_playlist_move( this, this->count
- 1, where
);
616 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
618 return mlt_playlist_virtual_refresh( this );
621 /** Remove an entry in the playlist.
624 int mlt_playlist_remove( mlt_playlist
this, int where
)
626 int error
= where
< 0 || where
>= this->count
;
627 if ( error
== 0 && mlt_playlist_unmix( this, where
) != 0 )
629 // We need to know the current clip and the position within the playlist
630 int current
= mlt_playlist_current_clip( this );
631 mlt_position position
= mlt_producer_position( MLT_PLAYLIST_PRODUCER( this ) );
633 // We need all the details about the clip we're removing
634 mlt_playlist_clip_info where_info
;
635 playlist_entry
*entry
= this->list
[ where
];
636 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( entry
->producer
);
642 mlt_playlist_get_clip_info( this, &where_info
, where
);
644 // Make sure the clip to be removed is valid and correct if necessary
647 if ( where
>= this->count
)
648 where
= this->count
- 1;
650 // Reorganise the list
651 for ( i
= where
+ 1; i
< this->count
; i
++ )
652 this->list
[ i
- 1 ] = this->list
[ i
];
655 if ( entry
->preservation_hack
== 0 )
657 // Decouple from mix_in/out if necessary
658 if ( mlt_properties_get_data( properties
, "mix_in", NULL
) != NULL
)
660 mlt_properties mix
= mlt_properties_get_data( properties
, "mix_in", NULL
);
661 mlt_properties_set_data( mix
, "mix_out", NULL
, 0, NULL
, NULL
);
663 if ( mlt_properties_get_data( properties
, "mix_out", NULL
) != NULL
)
665 mlt_properties mix
= mlt_properties_get_data( properties
, "mix_out", NULL
);
666 mlt_properties_set_data( mix
, "mix_in", NULL
, 0, NULL
, NULL
);
669 if ( mlt_properties_ref_count( MLT_PRODUCER_PROPERTIES( entry
->producer
) ) == 1 )
670 mlt_producer_clear( entry
->producer
);
673 // Close the producer associated to the clip info
674 mlt_event_close( entry
->event
);
675 mlt_producer_close( entry
->producer
);
678 if ( where
== current
)
679 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), where_info
.start
);
680 else if ( where
< current
&& this->count
> 0 )
681 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), position
- where_info
.frame_count
);
682 else if ( this->count
== 0 )
683 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), 0 );
688 // Refresh the playlist
689 mlt_playlist_virtual_refresh( this );
695 /** Move an entry in the playlist.
698 int mlt_playlist_move( mlt_playlist
this, int src
, int dest
)
702 /* We need to ensure that the requested indexes are valid and correct it as necessary */
705 if ( src
>= this->count
)
706 src
= this->count
- 1;
710 if ( dest
>= this->count
)
711 dest
= this->count
- 1;
713 if ( src
!= dest
&& this->count
> 1 )
715 int current
= mlt_playlist_current_clip( this );
716 mlt_position position
= mlt_producer_position( MLT_PLAYLIST_PRODUCER( this ) );
717 playlist_entry
*src_entry
= NULL
;
719 // We need all the details about the current clip
720 mlt_playlist_clip_info current_info
;
722 mlt_playlist_get_clip_info( this, ¤t_info
, current
);
723 position
-= current_info
.start
;
725 if ( current
== src
)
727 else if ( current
> src
&& current
< dest
)
729 else if ( current
== dest
)
732 src_entry
= this->list
[ src
];
735 for ( i
= src
; i
> dest
; i
-- )
736 this->list
[ i
] = this->list
[ i
- 1 ];
740 for ( i
= src
; i
< dest
; i
++ )
741 this->list
[ i
] = this->list
[ i
+ 1 ];
743 this->list
[ dest
] = src_entry
;
745 mlt_playlist_get_clip_info( this, ¤t_info
, current
);
746 mlt_producer_seek( MLT_PLAYLIST_PRODUCER( this ), current_info
.start
+ position
);
747 mlt_playlist_virtual_refresh( this );
753 /** Repeat the specified clip n times.
756 int mlt_playlist_repeat_clip( mlt_playlist
this, int clip
, int repeat
)
758 int error
= repeat
< 1 || clip
< 0 || clip
>= this->count
;
761 playlist_entry
*entry
= this->list
[ clip
];
762 entry
->repeat
= repeat
;
763 mlt_playlist_virtual_refresh( this );
768 /** Resize the specified clip.
771 int mlt_playlist_resize_clip( mlt_playlist
this, int clip
, mlt_position in
, mlt_position out
)
773 int error
= clip
< 0 || clip
>= this->count
;
774 if ( error
== 0 && mlt_playlist_resize_mix( this, clip
, in
, out
) != 0 )
776 playlist_entry
*entry
= this->list
[ clip
];
777 mlt_producer producer
= entry
->producer
;
778 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
780 mlt_events_block( properties
, properties
);
782 if ( mlt_producer_is_blank( producer
) )
784 // Make sure the blank is long enough to accomodate the length specified
785 if ( out
- in
+ 1 > mlt_producer_get_length( &this->blank
) )
787 mlt_properties blank_props
= MLT_PRODUCER_PROPERTIES( &this->blank
);
788 mlt_properties_set_int( blank_props
, "length", out
- in
+ 1 );
789 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( producer
), "length", out
- in
+ 1 );
790 mlt_producer_set_in_and_out( &this->blank
, 0, out
- in
);
796 if ( out
<= -1 || out
>= mlt_producer_get_length( producer
) )
797 out
= mlt_producer_get_length( producer
) - 1;
806 mlt_producer_set_in_and_out( producer
, in
, out
);
807 mlt_events_unblock( properties
, properties
);
808 mlt_playlist_virtual_refresh( this );
813 /** Split a clip on the playlist at the given position.
816 int mlt_playlist_split( mlt_playlist
this, int clip
, mlt_position position
)
818 int error
= clip
< 0 || clip
>= this->count
;
821 playlist_entry
*entry
= this->list
[ clip
];
822 position
= position
< 0 ? entry
->frame_count
+ position
- 1 : position
;
823 if ( position
>= 0 && position
< entry
->frame_count
- 1 )
825 int in
= entry
->frame_in
;
826 int out
= entry
->frame_out
;
827 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
828 mlt_playlist_resize_clip( this, clip
, in
, in
+ position
);
829 if ( !mlt_producer_is_blank( entry
->producer
) )
832 mlt_properties entry_properties
= MLT_PRODUCER_PROPERTIES( entry
->producer
);
833 mlt_producer split
= mlt_producer_cut( entry
->producer
, in
+ position
+ 1, out
);
834 mlt_properties split_properties
= MLT_PRODUCER_PROPERTIES( split
);
835 mlt_playlist_insert( this, split
, clip
+ 1, 0, -1 );
836 for ( i
= 0; i
< mlt_properties_count( entry_properties
); i
++ )
838 char *name
= mlt_properties_get_name( entry_properties
, i
);
839 if ( name
!= NULL
&& !strncmp( name
, "meta.", 5 ) )
840 mlt_properties_set( split_properties
, name
, mlt_properties_get_value( entry_properties
, i
) );
842 mlt_producer_close( split
);
846 mlt_playlist_insert( this, &this->blank
, clip
+ 1, 0, out
- position
- 1 );
848 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
849 mlt_playlist_virtual_refresh( this );
859 /** Split the playlist at the absolute position.
862 int mlt_playlist_split_at( mlt_playlist
this, mlt_position position
, int left
)
864 int result
= this == NULL ?
-1 : 0;
867 if ( position
>= 0 && position
< mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) ) )
869 int clip
= mlt_playlist_get_clip_index_at( this, position
);
870 mlt_playlist_clip_info info
;
871 mlt_playlist_get_clip_info( this, &info
, clip
);
872 if ( left
&& position
!= info
.start
)
873 mlt_playlist_split( this, clip
, position
- info
.start
- 1 );
875 mlt_playlist_split( this, clip
, position
- info
.start
);
878 else if ( position
<= 0 )
884 result
= mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
890 /** Join 1 or more consecutive clips.
893 int mlt_playlist_join( mlt_playlist
this, int clip
, int count
, int merge
)
895 int error
= clip
< 0 || clip
>= this->count
;
899 mlt_playlist new_clip
= mlt_playlist_init( );
900 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
901 if ( clip
+ count
>= this->count
)
902 count
= this->count
- clip
- 1;
903 for ( i
= 0; i
<= count
; i
++ )
905 playlist_entry
*entry
= this->list
[ clip
];
906 mlt_playlist_append( new_clip
, entry
->producer
);
907 mlt_playlist_repeat_clip( new_clip
, i
, entry
->repeat
);
908 entry
->preservation_hack
= 1;
909 mlt_playlist_remove( this, clip
);
911 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
912 mlt_playlist_insert( this, MLT_PLAYLIST_PRODUCER( new_clip
), clip
, 0, -1 );
913 mlt_playlist_close( new_clip
);
918 /** Mix consecutive clips for a specified length and apply transition if specified.
921 int mlt_playlist_mix( mlt_playlist
this, int clip
, int length
, mlt_transition transition
)
923 int error
= ( clip
< 0 || clip
+ 1 >= this->count
);
926 playlist_entry
*clip_a
= this->list
[ clip
];
927 playlist_entry
*clip_b
= this->list
[ clip
+ 1 ];
928 mlt_producer track_a
= NULL
;
929 mlt_producer track_b
= NULL
;
930 mlt_tractor tractor
= mlt_tractor_new( );
931 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
933 // Check length is valid for both clips and resize if necessary.
934 int max_size
= clip_a
->frame_count
> clip_b
->frame_count ? clip_a
->frame_count
: clip_b
->frame_count
;
935 length
= length
> max_size ? max_size
: length
;
937 // Create the a and b tracks/cuts if necessary - note that no cuts are required if the length matches
938 if ( length
!= clip_a
->frame_count
)
939 track_a
= mlt_producer_cut( clip_a
->producer
, clip_a
->frame_out
- length
+ 1, clip_a
->frame_out
);
941 track_a
= clip_a
->producer
;
943 if ( length
!= clip_b
->frame_count
)
944 track_b
= mlt_producer_cut( clip_b
->producer
, clip_b
->frame_in
, clip_b
->frame_in
+ length
- 1 );
946 track_b
= clip_b
->producer
;
948 // Set the tracks on the tractor
949 mlt_tractor_set_track( tractor
, track_a
, 0 );
950 mlt_tractor_set_track( tractor
, track_b
, 1 );
952 // Insert the mix object into the playlist
953 mlt_playlist_insert( this, MLT_TRACTOR_PRODUCER( tractor
), clip
+ 1, -1, -1 );
954 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mlt_mix", tractor
, 0, NULL
, NULL
);
956 // Attach the transition
957 if ( transition
!= NULL
)
959 mlt_field field
= mlt_tractor_field( tractor
);
960 mlt_field_plant_transition( field
, transition
, 0, 1 );
961 mlt_transition_set_in_and_out( transition
, 0, length
- 1 );
964 // Close our references to the tracks if we created new cuts above (the tracks can still be used here)
965 if ( track_a
!= clip_a
->producer
)
966 mlt_producer_close( track_a
);
967 if ( track_b
!= clip_b
->producer
)
968 mlt_producer_close( track_b
);
970 // Check if we have anything left on the right hand clip
971 if ( track_b
== clip_b
->producer
)
973 clip_b
->preservation_hack
= 1;
974 mlt_playlist_remove( this, clip
+ 2 );
976 else if ( clip_b
->frame_out
- clip_b
->frame_in
> length
)
978 mlt_playlist_resize_clip( this, clip
+ 2, clip_b
->frame_in
+ length
, clip_b
->frame_out
);
979 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_b
->producer
), "mix_in", tractor
, 0, NULL
, NULL
);
980 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mix_out", clip_b
->producer
, 0, NULL
, NULL
);
984 mlt_producer_clear( clip_b
->producer
);
985 mlt_playlist_remove( this, clip
+ 2 );
988 // Check if we have anything left on the left hand clip
989 if ( track_a
== clip_a
->producer
)
991 clip_a
->preservation_hack
= 1;
992 mlt_playlist_remove( this, clip
);
994 else if ( clip_a
->frame_out
- clip_a
->frame_in
> length
)
996 mlt_playlist_resize_clip( this, clip
, clip_a
->frame_in
, clip_a
->frame_out
- length
);
997 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_a
->producer
), "mix_out", tractor
, 0, NULL
, NULL
);
998 mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor
), "mix_in", clip_a
->producer
, 0, NULL
, NULL
);
1002 mlt_producer_clear( clip_a
->producer
);
1003 mlt_playlist_remove( this, clip
);
1006 // Unblock and force a fire off of change events to listeners
1007 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1008 mlt_playlist_virtual_refresh( this );
1009 mlt_tractor_close( tractor
);
1014 /** Add a transition to an existing mix.
1017 int mlt_playlist_mix_add( mlt_playlist
this, int clip
, mlt_transition transition
)
1019 mlt_producer producer
= mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip
) );
1020 mlt_properties properties
= producer
!= NULL ?
MLT_PRODUCER_PROPERTIES( producer
) : NULL
;
1021 mlt_tractor tractor
= properties
!= NULL ?
mlt_properties_get_data( properties
, "mlt_mix", NULL
) : NULL
;
1022 int error
= transition
== NULL
|| tractor
== NULL
;
1025 mlt_field field
= mlt_tractor_field( tractor
);
1026 mlt_field_plant_transition( field
, transition
, 0, 1 );
1027 mlt_transition_set_in_and_out( transition
, 0, this->list
[ clip
]->frame_count
- 1 );
1032 /** Return the clip at the clip index.
1035 mlt_producer
mlt_playlist_get_clip( mlt_playlist
this, int clip
)
1037 if ( clip
>= 0 && clip
< this->count
)
1038 return this->list
[ clip
]->producer
;
1042 /** Return the clip at the specified position.
1045 mlt_producer
mlt_playlist_get_clip_at( mlt_playlist
this, mlt_position position
)
1047 int index
= 0, total
= 0;
1048 return mlt_playlist_locate( this, &position
, &index
, &total
);
1051 /** Return the clip index of the specified position.
1054 int mlt_playlist_get_clip_index_at( mlt_playlist
this, mlt_position position
)
1056 int index
= 0, total
= 0;
1057 mlt_playlist_locate( this, &position
, &index
, &total
);
1061 /** Determine if the clip is a mix.
1064 int mlt_playlist_clip_is_mix( mlt_playlist
this, int clip
)
1066 mlt_producer producer
= mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip
) );
1067 mlt_properties properties
= producer
!= NULL ?
MLT_PRODUCER_PROPERTIES( producer
) : NULL
;
1068 mlt_tractor tractor
= properties
!= NULL ?
mlt_properties_get_data( properties
, "mlt_mix", NULL
) : NULL
;
1069 return tractor
!= NULL
;
1072 /** Remove a mixed clip - ensure that the cuts included in the mix find their way
1073 back correctly on to the playlist.
1076 static int mlt_playlist_unmix( mlt_playlist
this, int clip
)
1078 int error
= ( clip
< 0 || clip
>= this->count
);
1080 // Ensure that the clip request is actually a mix
1083 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ clip
]->producer
);
1084 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
1085 error
= mlt_properties_get_data( properties
, "mlt_mix", NULL
) == NULL
||
1086 this->list
[ clip
]->preservation_hack
;
1091 playlist_entry
*mix
= this->list
[ clip
];
1092 mlt_tractor tractor
= ( mlt_tractor
)mlt_producer_cut_parent( mix
->producer
);
1093 mlt_properties properties
= MLT_TRACTOR_PROPERTIES( tractor
);
1094 mlt_producer clip_a
= mlt_properties_get_data( properties
, "mix_in", NULL
);
1095 mlt_producer clip_b
= mlt_properties_get_data( properties
, "mix_out", NULL
);
1096 int length
= mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor
) );
1097 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
1099 if ( clip_a
!= NULL
)
1101 mlt_producer_set_in_and_out( clip_a
, mlt_producer_get_in( clip_a
), mlt_producer_get_out( clip_a
) + length
);
1105 mlt_producer cut
= mlt_tractor_get_track( tractor
, 0 );
1106 mlt_playlist_insert( this, cut
, clip
, -1, -1 );
1110 if ( clip_b
!= NULL
)
1112 mlt_producer_set_in_and_out( clip_b
, mlt_producer_get_in( clip_b
) - length
, mlt_producer_get_out( clip_b
) );
1116 mlt_producer cut
= mlt_tractor_get_track( tractor
, 1 );
1117 mlt_playlist_insert( this, cut
, clip
+ 1, -1, -1 );
1120 mlt_properties_set_data( properties
, "mlt_mix", NULL
, 0, NULL
, NULL
);
1121 mlt_playlist_remove( this, clip
);
1122 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1123 mlt_playlist_virtual_refresh( this );
1128 static int mlt_playlist_resize_mix( mlt_playlist
this, int clip
, int in
, int out
)
1130 int error
= ( clip
< 0 || clip
>= this->count
);
1132 // Ensure that the clip request is actually a mix
1135 mlt_producer producer
= mlt_producer_cut_parent( this->list
[ clip
]->producer
);
1136 mlt_properties properties
= MLT_PRODUCER_PROPERTIES( producer
);
1137 error
= mlt_properties_get_data( properties
, "mlt_mix", NULL
) == NULL
;
1142 playlist_entry
*mix
= this->list
[ clip
];
1143 mlt_tractor tractor
= ( mlt_tractor
)mlt_producer_cut_parent( mix
->producer
);
1144 mlt_properties properties
= MLT_TRACTOR_PROPERTIES( tractor
);
1145 mlt_producer clip_a
= mlt_properties_get_data( properties
, "mix_in", NULL
);
1146 mlt_producer clip_b
= mlt_properties_get_data( properties
, "mix_out", NULL
);
1147 mlt_producer track_a
= mlt_tractor_get_track( tractor
, 0 );
1148 mlt_producer track_b
= mlt_tractor_get_track( tractor
, 1 );
1149 int length
= out
- in
+ 1;
1150 int length_diff
= length
- mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor
) );
1151 mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
1153 if ( clip_a
!= NULL
)
1154 mlt_producer_set_in_and_out( clip_a
, mlt_producer_get_in( clip_a
), mlt_producer_get_out( clip_a
) - length_diff
);
1156 if ( clip_b
!= NULL
)
1157 mlt_producer_set_in_and_out( clip_b
, mlt_producer_get_in( clip_b
) + length_diff
, mlt_producer_get_out( clip_b
) );
1159 mlt_producer_set_in_and_out( track_a
, mlt_producer_get_in( track_a
) - length_diff
, mlt_producer_get_out( track_a
) );
1160 mlt_producer_set_in_and_out( track_b
, mlt_producer_get_in( track_b
), mlt_producer_get_out( track_b
) + length_diff
);
1161 mlt_producer_set_in_and_out( MLT_MULTITRACK_PRODUCER( mlt_tractor_multitrack( tractor
) ), in
, out
);
1162 mlt_producer_set_in_and_out( MLT_TRACTOR_PRODUCER( tractor
), in
, out
);
1163 mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( mix
->producer
), "length", out
- in
+ 1 );
1164 mlt_producer_set_in_and_out( mix
->producer
, in
, out
);
1166 mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
1167 mlt_playlist_virtual_refresh( this );
1172 /** Consolodate adjacent blank producers.
1175 void mlt_playlist_consolidate_blanks( mlt_playlist
this, int keep_length
)
1180 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1182 mlt_events_block( properties
, properties
);
1183 for ( i
= 1; i
< this->count
; i
++ )
1185 playlist_entry
*left
= this->list
[ i
- 1 ];
1186 playlist_entry
*right
= this->list
[ i
];
1188 if ( mlt_producer_is_blank( left
->producer
) && mlt_producer_is_blank( right
->producer
) )
1190 mlt_playlist_resize_clip( this, i
- 1, 0, left
->frame_count
+ right
->frame_count
- 1 );
1191 mlt_playlist_remove( this, i
-- );
1195 if ( !keep_length
&& this->count
> 0 )
1197 playlist_entry
*last
= this->list
[ this->count
- 1 ];
1198 if ( mlt_producer_is_blank( last
->producer
) )
1199 mlt_playlist_remove( this, this->count
- 1 );
1202 mlt_events_unblock( properties
, properties
);
1203 mlt_playlist_virtual_refresh( this );
1207 /** Determine if the specified clip index is a blank.
1210 int mlt_playlist_is_blank( mlt_playlist
this, int clip
)
1212 return this == NULL
|| mlt_producer_is_blank( mlt_playlist_get_clip( this, clip
) );
1215 /** Determine if the specified position is a blank.
1218 int mlt_playlist_is_blank_at( mlt_playlist
this, mlt_position position
)
1220 return this == NULL
|| mlt_producer_is_blank( mlt_playlist_get_clip_at( this, position
) );
1223 /** Replace the specified clip with a blank and return the clip.
1226 mlt_producer
mlt_playlist_replace_with_blank( mlt_playlist
this, int clip
)
1228 mlt_producer producer
= NULL
;
1229 if ( !mlt_playlist_is_blank( this, clip
) )
1231 playlist_entry
*entry
= this->list
[ clip
];
1232 int in
= entry
->frame_in
;
1233 int out
= entry
->frame_out
;
1234 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1235 producer
= entry
->producer
;
1236 mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer
) );
1237 mlt_events_block( properties
, properties
);
1238 mlt_playlist_remove( this, clip
);
1239 mlt_playlist_blank( this, out
- in
);
1240 mlt_playlist_move( this, this->count
- 1, clip
);
1241 mlt_events_unblock( properties
, properties
);
1242 mlt_playlist_virtual_refresh( this );
1243 mlt_producer_set_in_and_out( producer
, in
, out
);
1248 void mlt_playlist_insert_blank( mlt_playlist
this, int clip
, int length
)
1250 if ( this != NULL
&& length
>= 0 )
1252 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1253 mlt_events_block( properties
, properties
);
1254 mlt_playlist_blank( this, length
);
1255 mlt_playlist_move( this, this->count
- 1, clip
);
1256 mlt_events_unblock( properties
, properties
);
1257 mlt_playlist_virtual_refresh( this );
1261 void mlt_playlist_pad_blanks( mlt_playlist
this, mlt_position position
, int length
, int find
)
1263 if ( this != NULL
&& length
!= 0 )
1265 int clip
= mlt_playlist_get_clip_index_at( this, position
);
1266 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1267 mlt_events_block( properties
, properties
);
1268 if ( find
&& clip
< this->count
&& !mlt_playlist_is_blank( this, clip
) )
1270 if ( clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1272 mlt_playlist_clip_info info
;
1273 mlt_playlist_get_clip_info( this, &info
, clip
);
1274 if ( info
.frame_out
+ length
> info
.frame_in
)
1275 mlt_playlist_resize_clip( this, clip
, info
.frame_in
, info
.frame_out
+ length
);
1277 mlt_playlist_remove( this, clip
);
1279 else if ( find
&& clip
< this->count
&& length
> 0 )
1281 mlt_playlist_insert_blank( this, clip
, length
);
1283 mlt_events_unblock( properties
, properties
);
1284 mlt_playlist_virtual_refresh( this );
1288 int mlt_playlist_insert_at( mlt_playlist
this, mlt_position position
, mlt_producer producer
, int mode
)
1290 int ret
= this == NULL
|| position
< 0 || producer
== NULL
;
1293 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1294 int length
= mlt_producer_get_playtime( producer
);
1295 int clip
= mlt_playlist_get_clip_index_at( this, position
);
1296 mlt_playlist_clip_info info
;
1297 mlt_playlist_get_clip_info( this, &info
, clip
);
1298 mlt_events_block( properties
, this );
1299 if ( clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1301 // Split and move to new clip if need be
1302 if ( position
!= info
.start
&& mlt_playlist_split( this, clip
, position
- info
.start
- 1 ) == 0 )
1303 mlt_playlist_get_clip_info( this, &info
, ++ clip
);
1305 // Split again if need be
1306 if ( length
< info
.frame_count
)
1307 mlt_playlist_split( this, clip
, length
- 1 );
1310 mlt_playlist_remove( this, clip
);
1313 mlt_playlist_insert( this, producer
, clip
, -1, -1 );
1316 else if ( clip
< this->count
)
1318 if ( position
> info
.start
+ info
.frame_count
/ 2 )
1320 if ( mode
== 1 && clip
< this->count
&& mlt_playlist_is_blank( this, clip
) )
1322 mlt_playlist_get_clip_info( this, &info
, clip
);
1323 if ( length
< info
.frame_count
)
1324 mlt_playlist_split( this, clip
, length
);
1325 mlt_playlist_remove( this, clip
);
1327 mlt_playlist_insert( this, producer
, clip
, -1, -1 );
1333 if ( position
== info
.start
)
1334 mlt_playlist_remove( this, clip
);
1336 mlt_playlist_blank( this, position
- mlt_properties_get_int( properties
, "length" ) - 1 );
1338 mlt_playlist_append( this, producer
);
1339 ret
= this->count
- 1;
1341 mlt_events_unblock( properties
, this );
1342 mlt_playlist_virtual_refresh( this );
1351 int mlt_playlist_clip_start( mlt_playlist
this, int clip
)
1353 mlt_playlist_clip_info info
;
1354 if ( mlt_playlist_get_clip_info( this, &info
, clip
) == 0 )
1356 return clip
< 0 ?
0 : mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
1359 int mlt_playlist_clip_length( mlt_playlist
this, int clip
)
1361 mlt_playlist_clip_info info
;
1362 if ( mlt_playlist_get_clip_info( this, &info
, clip
) == 0 )
1363 return info
.frame_count
;
1367 int mlt_playlist_blanks_from( mlt_playlist
this, int clip
, int bounded
)
1370 mlt_playlist_clip_info info
;
1371 if ( this != NULL
&& clip
< this->count
)
1373 mlt_playlist_get_clip_info( this, &info
, clip
);
1374 if ( mlt_playlist_is_blank( this, clip
) )
1375 count
+= info
.frame_count
;
1377 bounded
= this->count
;
1378 for ( clip
++; clip
< this->count
&& bounded
>= 0; clip
++ )
1380 mlt_playlist_get_clip_info( this, &info
, clip
);
1381 if ( mlt_playlist_is_blank( this, clip
) )
1382 count
+= info
.frame_count
;
1390 int mlt_playlist_remove_region( mlt_playlist
this, mlt_position position
, int length
)
1392 int index
= mlt_playlist_get_clip_index_at( this, position
);
1393 if ( index
>= 0 && index
< this->count
)
1395 mlt_properties properties
= MLT_PLAYLIST_PROPERTIES( this );
1396 int clip_start
= mlt_playlist_clip_start( this, index
);
1397 int clip_length
= mlt_playlist_clip_length( this, index
);
1398 int list_length
= mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
1399 mlt_events_block( properties
, this );
1401 if ( position
+ length
> list_length
)
1402 length
-= ( position
+ length
- list_length
);
1404 if ( clip_start
< position
)
1406 mlt_playlist_split( this, index
++, position
- clip_start
);
1407 clip_length
-= position
- clip_start
;
1412 if ( mlt_playlist_clip_length( this, index
) > length
)
1413 mlt_playlist_split( this, index
, length
);
1414 length
-= mlt_playlist_clip_length( this, index
);
1415 mlt_playlist_remove( this, index
);
1418 mlt_playlist_consolidate_blanks( this, 0 );
1419 mlt_events_unblock( properties
, this );
1420 mlt_playlist_virtual_refresh( this );
1422 // Just to be sure, we'll get the clip index again...
1423 index
= mlt_playlist_get_clip_index_at( this, position
);
1428 int mlt_playlist_move_region( mlt_playlist
this, mlt_position position
, int length
, int new_position
)
1436 /** Get the current frame.
1439 static int producer_get_frame( mlt_producer producer
, mlt_frame_ptr frame
, int index
)
1441 // Check that we have a producer
1442 if ( producer
== NULL
)
1448 // Get this mlt_playlist
1449 mlt_playlist
this = producer
->child
;
1451 // Need to ensure the frame is deinterlaced when repeating 1 frame
1452 int progressive
= 0;
1454 // Get the real producer
1455 mlt_service real
= mlt_playlist_virtual_seek( this, &progressive
);
1457 // Check that we have a producer
1460 *frame
= mlt_frame_init( MLT_PRODUCER_SERVICE( producer
) );
1465 if ( !mlt_properties_get_int( MLT_SERVICE_PROPERTIES( real
), "meta.fx_cut" ) )
1467 mlt_service_get_frame( real
, frame
, index
);
1471 mlt_producer parent
= mlt_producer_cut_parent( ( mlt_producer
)real
);
1472 *frame
= mlt_frame_init( MLT_PRODUCER_SERVICE( parent
) );
1473 mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame
), "fx_cut", 1 );
1474 mlt_frame_push_service( *frame
, NULL
);
1475 mlt_frame_push_audio( *frame
, NULL
);
1476 mlt_service_apply_filters( MLT_PRODUCER_SERVICE( parent
), *frame
, 0 );
1477 mlt_service_apply_filters( real
, *frame
, 0 );
1478 mlt_deque_pop_front( MLT_FRAME_IMAGE_STACK( *frame
) );
1479 mlt_deque_pop_front( MLT_FRAME_AUDIO_STACK( *frame
) );
1482 // Check if we're at the end of the clip
1483 mlt_properties properties
= MLT_FRAME_PROPERTIES( *frame
);
1484 if ( mlt_properties_get_int( properties
, "end_of_clip" ) )
1485 mlt_playlist_virtual_set_out( this );
1487 // Set the consumer progressive property
1490 mlt_properties_set_int( properties
, "consumer_deinterlace", progressive
);
1491 mlt_properties_set_int( properties
, "test_audio", 1 );
1494 // Check for notifier and call with appropriate argument
1495 mlt_properties playlist_properties
= MLT_PRODUCER_PROPERTIES( producer
);
1496 void ( *notifier
)( void * ) = mlt_properties_get_data( playlist_properties
, "notifier", NULL
);
1497 if ( notifier
!= NULL
)
1499 void *argument
= mlt_properties_get_data( playlist_properties
, "notifier_arg", NULL
);
1500 notifier( argument
);
1503 // Update position on the frame we're creating
1504 mlt_frame_set_position( *frame
, mlt_producer_frame( producer
) );
1506 // Position ourselves on the next frame
1507 mlt_producer_prepare_next( producer
);
1512 /** Close the playlist.
1515 void mlt_playlist_close( mlt_playlist
this )
1517 if ( this != NULL
&& mlt_properties_dec_ref( MLT_PLAYLIST_PROPERTIES( this ) ) <= 0 )
1520 this->parent
.close
= NULL
;
1521 for ( i
= 0; i
< this->count
; i
++ )
1523 mlt_event_close( this->list
[ i
]->event
);
1524 mlt_producer_close( this->list
[ i
]->producer
);
1525 free( this->list
[ i
] );
1527 mlt_producer_close( &this->blank
);
1528 mlt_producer_close( &this->parent
);