producer->get_frame = producer_get_frame;
mlt_properties_set_data( properties, "multitrack", this, 0, NULL, NULL );
mlt_properties_set( properties, "log_id", "multitrack" );
- mlt_properties_set( properties, "resource", "<mulitrack>" );
+ mlt_properties_set( properties, "resource", "<multitrack>" );
}
else
{
return result;
}
+/** Get the number of tracks.
+*/
+
+int mlt_multitrack_count( mlt_multitrack this )
+{
+ return this->count;
+}
+
+/** Get an individual track as a producer.
+*/
+
+mlt_producer mlt_multitrack_track( mlt_multitrack this, int track )
+{
+ mlt_producer producer = NULL;
+
+ if ( this->list != NULL && track < this->count )
+ producer = this->list[ track ];
+
+ return producer;
+}
+
+static int position_compare( const void *p1, const void *p2 )
+{
+ return *( int64_t * )p1 - *( int64_t * )p2;
+}
+
+static int add_unique( mlt_position *array, int size, mlt_position position )
+{
+ int i = 0;
+ for ( i = 0; i < size; i ++ )
+ if ( array[ i ] == position )
+ break;
+ if ( i == size )
+ array[ size ++ ] = position;
+ return size;
+}
+
/** Determine the clip point.
Special case here: a 'producer' has no concept of multiple clips - only the
mlt_position mlt_multitrack_clip( mlt_multitrack this, mlt_whence whence, int index )
{
- int first = 1;
mlt_position position = 0;
int i = 0;
+ int j = 0;
+ int64_t *map = malloc( 1000 * sizeof( mlt_position ) );
+ int count = 0;
- // Loop through each of the tracks
for ( i = 0; i < this->count; i ++ )
{
// Get the producer for this track
// Determine if it's a playlist
mlt_playlist playlist = mlt_properties_get_data( properties, "playlist", NULL );
- // We only consider playlists
+ // Special case consideration of playlists
if ( playlist != NULL )
{
- // Locate the smallest position
- if ( first )
- {
- // First position found
- position = mlt_playlist_clip( playlist, whence, index );
-
- // We're no longer first
- first = 0;
- }
- else
- {
- // Obtain the clip position in this playlist
- //mlt_position position2 = mlt_playlist_clip( playlist, whence, index );
-
- // If this position is prior to the first, then use it
- //if ( position2 < position )
- //position = position2;
- }
+ for ( j = 0; j < mlt_playlist_count( playlist ); j ++ )
+ count = add_unique( map, count, mlt_playlist_clip( playlist, mlt_whence_relative_start, j ) );
+ count = add_unique( map, count, mlt_producer_get_out( producer ) + 1 );
}
else
{
- fprintf( stderr, "track %d isn't a playlist\n", index );
+ count = add_unique( map, count, 0 );
+ count = add_unique( map, count, mlt_producer_get_out( producer ) + 1 );
}
}
}
+ // Now sort the map
+ qsort( map, count, sizeof( int64_t ), position_compare );
+
+ // Now locate the requested index
+ switch( whence )
+ {
+ case mlt_whence_relative_start:
+ if ( index < count )
+ position = map[ index ];
+ else
+ position = map[ count - 1 ];
+ break;
+
+ case mlt_whence_relative_current:
+ position = mlt_producer_position( mlt_multitrack_producer( this ) );
+ for ( i = 0; i < count - 2; i ++ )
+ if ( position >= map[ i ] && position < map[ i + 1 ] )
+ break;
+ index += i;
+ if ( index >= 0 && index < count )
+ position = map[ index ];
+ else if ( index < 0 )
+ position = map[ 0 ];
+ else
+ position = map[ count - 1 ];
+ break;
+
+ case mlt_whence_relative_end:
+ if ( index < count )
+ position = map[ count - index - 1 ];
+ else
+ position = map[ 0 ];
+ break;
+ }
+
+ // Free the map
+ free( map );
+
return position;
}
// Indicate speed of this producer
mlt_properties producer_properties = mlt_producer_properties( parent );
- double speed = mlt_properties_get_double( producer_properties, "speed" );
+ double speed = mlt_properties_get_double( producer_properties, "_speed" );
mlt_properties properties = mlt_frame_properties( *frame );
- mlt_properties_set_double( properties, "speed", speed );
+ mlt_properties_set_double( properties, "_speed", speed );
}
else
{
}
// Refresh our stats
- mlt_multitrack_refresh( this );
+ //mlt_multitrack_refresh( this );
}
return 0;