#include "config.h"
#include "mlt_playlist.h"
+#include "mlt_tractor.h"
+#include "mlt_field.h"
#include "mlt_frame.h"
+#include "mlt_transition.h"
#include <stdio.h>
#include <stdlib.h>
/** Virtual playlist entry.
*/
-typedef struct
+typedef struct playlist_entry_s
{
mlt_producer producer;
mlt_position frame_in;
mlt_position frame_out;
mlt_position frame_count;
+ mlt_position producer_length;
mlt_event event;
+ int mix_in_length;
+ int mix_out_length;
+ struct playlist_entry_s *mix_in;
+ struct playlist_entry_s *mix_out;
}
playlist_entry;
*/
static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
+static int mlt_playlist_unmix( mlt_playlist this, int clip );
+static int mlt_playlist_resize_mix( mlt_playlist this, int clip, int in, int out );
/** Constructor.
*/
{
// Get the producer
mlt_producer producer = this->list[ i ]->producer;
+ int current_length = mlt_producer_get_out( producer ) - mlt_producer_get_in( producer ) + 1;
// If fps is 0
if ( fps == 0 )
mlt_properties_set_double( mlt_producer_properties( producer ), "fps", fps );
}
+ // Check if the length of the producer has changed
+ if ( this->list[ i ]->producer_length != current_length )
+ {
+ // This clip should be removed...
+ if ( this->list[ i ]->frame_in > current_length )
+ {
+ this->list[ i ]->frame_count = 0;
+ this->list[ i ]->frame_in = 0;
+ this->list[ i ]->frame_out = 0;
+ }
+ else if ( this->list[ i ]->frame_out >= current_length )
+ {
+ this->list[ i ]->frame_out = current_length - 1;
+ this->list[ i ]->frame_count = this->list[ i ]->frame_out - this->list[ i ]->frame_in + 1;
+ }
+
+ // Update the producer_length
+ this->list[ i ]->producer_length = current_length;
+ }
+
// Update the frame_count for this clip
frame_count += this->list[ i ]->frame_count;
}
this->list[ this->count ]->frame_in = in;
this->list[ this->count ]->frame_out = out;
this->list[ this->count ]->frame_count = out - in + 1;
+ this->list[ this->count ]->producer_length = mlt_producer_get_out( producer ) - mlt_producer_get_in( producer ) + 1;
this->list[ this->count ]->event = mlt_events_listen( properties, this, "producer-changed", ( mlt_listener )mlt_playlist_listener );
mlt_event_inc_ref( this->list[ this->count ]->event );
int mlt_playlist_remove( mlt_playlist this, int where )
{
- if ( this->count > 0 )
+ int error = where < 0 || where >= this->count;
+ if ( error == 0 && mlt_playlist_unmix( this, where ) != 0 )
{
// We need to know the current clip and the position within the playlist
int current = mlt_playlist_current_clip( this );
// We need all the details about the clip we're removing
mlt_playlist_clip_info where_info;
+ playlist_entry *entry = this->list[ where ];
// Loop variable
int i = 0;
+ // Get the clip info
+ mlt_playlist_get_clip_info( this, &where_info, where );
+
// Make sure the clip to be removed is valid and correct if necessary
if ( where < 0 )
where = 0;
if ( where >= this->count )
where = this->count - 1;
- // Get the clip info of the clip to be removed
- mlt_playlist_get_clip_info( this, &where_info, where );
-
// Close the producer associated to the clip info
- mlt_event_close( where_info.event );
- mlt_producer_close( where_info.producer );
+ mlt_event_close( entry->event );
+ mlt_producer_close( entry->producer );
+ if ( entry->mix_in != NULL )
+ entry->mix_in->mix_out = NULL;
+ if ( entry->mix_out != NULL )
+ entry->mix_out->mix_in = NULL;
// Reorganise the list
for ( i = where + 1; i < this->count; i ++ )
else if ( this->count == 0 )
mlt_producer_seek( mlt_playlist_producer( this ), 0 );
+ // Free the entry
+ free( entry );
+
// Refresh the playlist
mlt_playlist_virtual_refresh( this );
}
- return 0;
+ return error;
}
/** Move an entry in the playlist.
int mlt_playlist_resize_clip( mlt_playlist this, int clip, mlt_position in, mlt_position out )
{
int error = clip < 0 || clip >= this->count;
- if ( error == 0 )
+ if ( error == 0 && mlt_playlist_resize_mix( this, clip, in, out ) != 0 )
{
playlist_entry *entry = this->list[ clip ];
mlt_producer producer = entry->producer;
if ( error == 0 )
{
playlist_entry *entry = this->list[ clip ];
+ playlist_entry *new_entry = NULL;
if ( position > 0 && position < entry->frame_count )
{
int in = entry->frame_in;
int out = entry->frame_out;
mlt_events_block( mlt_playlist_properties( this ), this );
mlt_playlist_resize_clip( this, clip, in, in + position );
- mlt_events_unblock( mlt_playlist_properties( this ), this );
mlt_playlist_insert( this, entry->producer, clip + 1, in + position + 1, out );
+ new_entry = this->list[ clip + 1 ];
+ new_entry->mix_out = entry->mix_out;
+ new_entry->mix_out_length = entry->mix_out_length;
+ if ( entry->mix_out != NULL )
+ entry->mix_out->mix_in = new_entry;
+ entry->mix_out = NULL;
+ entry->mix_out_length = 0;
+ mlt_events_unblock( mlt_playlist_properties( this ), this );
+ mlt_events_fire( mlt_playlist_properties( this ), "producer-changed", NULL );
}
else
{
return error;
}
+int mlt_playlist_mix( mlt_playlist this, int clip, int length, mlt_transition transition )
+{
+ int error = ( clip < 0 || clip + 1 >= this->count ) && this->list[ clip ]->mix_out != NULL;
+ if ( error == 0 )
+ {
+ playlist_entry *mix = NULL;
+ playlist_entry *clip_a = this->list[ clip ];
+ playlist_entry *clip_b = this->list[ clip + 1 ];
+ mlt_tractor tractor = mlt_tractor_new( );
+ mlt_playlist track_a = mlt_playlist_init( );
+ mlt_playlist track_b = mlt_playlist_init( );
+ mlt_properties_set_int( mlt_tractor_properties( tractor ), "mlt_mix", 1 );
+ mlt_events_block( mlt_playlist_properties( this ), this );
+ mlt_playlist_resize_clip( this, clip, clip_a->frame_in, clip_a->frame_out - length );
+ mlt_playlist_resize_clip( this, clip + 1, clip_b->frame_in + length, clip_b->frame_out );
+ mlt_tractor_set_track( tractor, mlt_playlist_producer( track_a ), 0 );
+ mlt_tractor_set_track( tractor, mlt_playlist_producer( track_b ), 1 );
+ mlt_playlist_append_io( track_a, clip_a->producer, clip_a->frame_out + 1, clip_a->frame_out + length );
+ mlt_playlist_append_io( track_b, clip_b->producer, clip_b->frame_in - length, clip_b->frame_in - 1 );
+ mlt_playlist_insert( this, mlt_tractor_producer( tractor ), clip + 1, -1, -1 );
+
+ // Store mix info so that we can manipulate clips on either side
+ mix = this->list[ clip + 1 ];
+ mix->mix_in = clip_a;
+ mix->mix_out = clip_b;
+ mix->mix_out_length = length;
+ mix->mix_in_length = length;
+ clip_a->mix_out = mix;
+ clip_a->mix_out_length = length;
+ clip_b->mix_in = mix;
+ clip_b->mix_in_length = length;
+
+ if ( transition != NULL )
+ {
+ mlt_field field = mlt_tractor_field( tractor );
+ mlt_field_plant_transition( field, transition, 0, 1 );
+ mlt_transition_set_in_and_out( transition, 0, length - 1 );
+ }
+ mlt_events_unblock( mlt_playlist_properties( this ), this );
+ mlt_events_fire( mlt_playlist_properties( this ), "producer-changed", NULL );
+ mlt_playlist_close( track_a );
+ mlt_playlist_close( track_b );
+ mlt_tractor_close( tractor );
+ }
+ return error;
+}
+
+static int mlt_playlist_unmix( mlt_playlist this, int clip )
+{
+ int error = ( clip < 0 || clip >= this->count );
+
+ // Ensure that the clip request is actually a mix
+ if ( error == 0 )
+ {
+ mlt_producer producer = this->list[ clip ]->producer;
+ mlt_properties properties = mlt_producer_properties( producer );
+ error = !mlt_properties_get_int( properties, "mlt_mix" );
+ }
+
+ if ( error == 0 )
+ {
+ playlist_entry *mix = this->list[ clip ];
+ playlist_entry *clip_a = mix->mix_in;
+ playlist_entry *clip_b = mix->mix_out;
+ int length = mix->mix_in_length;
+ mlt_events_block( mlt_playlist_properties( this ), this );
+
+ if ( clip_a != NULL )
+ {
+ clip_a->frame_out += length;
+ clip_a->frame_count += length;
+ clip_a->mix_out = NULL;
+ clip_a->mix_out_length = 0;
+ }
+
+ if ( clip_b != NULL )
+ {
+ clip_b->frame_in -= length;
+ clip_b->frame_count += length;
+ clip_b->mix_in = NULL;
+ clip_b->mix_in_length = 0;
+ }
+
+ mlt_properties_set_int( mlt_producer_properties( mix->producer ), "mlt_mix", 0 );
+ mlt_playlist_remove( this, clip );
+ mlt_events_unblock( mlt_playlist_properties( this ), this );
+ mlt_events_fire( mlt_playlist_properties( this ), "producer-changed", NULL );
+ }
+ return error;
+}
+
+static int mlt_playlist_resize_mix( mlt_playlist this, int clip, int in, int out )
+{
+ int error = ( clip < 0 || clip >= this->count );
+
+ // Ensure that the clip request is actually a mix
+ if ( error == 0 )
+ {
+ mlt_producer producer = this->list[ clip ]->producer;
+ mlt_properties properties = mlt_producer_properties( producer );
+ error = !mlt_properties_get_int( properties, "mlt_mix" );
+ }
+
+ if ( error == 0 )
+ {
+ playlist_entry *mix = this->list[ clip ];
+ playlist_entry *clip_a = mix->mix_in;
+ playlist_entry *clip_b = mix->mix_out;
+ int length = out - in + 1;
+ int length_diff = length - mix->mix_in_length;
+ mlt_events_block( mlt_playlist_properties( this ), this );
+
+ if ( clip_a != NULL )
+ {
+ clip_a->frame_out -= length_diff;
+ clip_a->frame_count -= length_diff;
+ clip_a->mix_out_length -= length_diff;
+ }
+
+ if ( clip_b != NULL )
+ {
+ clip_b->frame_in += length_diff;
+ clip_b->frame_count -= length_diff;
+ clip_b->mix_in_length -= length_diff;
+ }
+
+ mix->frame_in = 0;
+ mix->frame_out = length - 1;
+ mix->frame_count = length;
+ mix->mix_in_length = length;
+ mix->mix_out_length = length;
+
+ mlt_events_unblock( mlt_playlist_properties( this ), this );
+ mlt_events_fire( mlt_playlist_properties( this ), "producer-changed", NULL );
+ }
+ return error;
+}
+
/** Get the current frame.
*/
projects / melted / blobdiff