static void deserialize_vectors( videostab self, char *vectors, mlt_position length )
{
mlt_geometry g = mlt_geometry_init();
// Parse the property as a geometry
if ( g && !mlt_geometry_parse( g, vectors, length, -1, -1 ) )
{
struct mlt_geometry_item_s item;
int i;
// Copy the geometry items to a vc array for interp()
for ( i = 0; i < length; i++ )
{
mlt_geometry_fetch( g, &item, i );
self->pos_h[i].x = item.x;
self->pos_h[i].y = item.y;
}
}
else
{
mlt_log_warning( MLT_FILTER_SERVICE(self->parent), "failed to parse vectors\n" );
}
// We are done with this mlt_geometry
if ( g ) mlt_geometry_close( g );
}
// Conditionally refresh in case of a change
int mlt_geometry_refresh( mlt_geometry self, char *data, int length, int nw, int nh )
{
geometry g = self->local;
int changed = ( length != -1 && length != g->length );
changed = changed || ( nw != -1 && nw != g->nw );
changed = changed || ( nh != -1 && nh != g->nh );
changed = changed || ( data != NULL && ( g->data == NULL || strcmp( data, g->data ) ) );
if ( changed )
return mlt_geometry_parse( self, data, length, nw, nh );
return -1;
}
static mlt_geometry transition_parse_keys( mlt_transition transition, const char *name, const char *store, int normalised_width, int normalised_height )
{
// Get the properties of the transition
mlt_properties properties = MLT_TRANSITION_PROPERTIES( transition );
// Try to fetch it first
mlt_geometry geometry = mlt_properties_get_data( properties, store, NULL );
// Determine length and obtain cycle
mlt_position length = mlt_transition_get_length( transition );
double cycle = mlt_properties_get_double( properties, "cycle" );
// Allow a geometry repeat cycle
if ( cycle >= 1 )
length = cycle;
else if ( cycle > 0 )
length *= cycle;
if ( geometry == NULL )
{
// Get the new style geometry string
char *property = mlt_properties_get( properties, name );
// Create an empty geometries object
geometry = mlt_geometry_init( );
// Parse the geometry if we have one
mlt_geometry_parse( geometry, property, length, normalised_width, normalised_height );
// Store it
mlt_properties_set_data( properties, store, geometry, 0, ( mlt_destructor )mlt_geometry_close, NULL );
}
else
{
// Check for updates and refresh if necessary
mlt_geometry_refresh( geometry, mlt_properties_get( properties, name ), length, normalised_width, normalised_height );
}
return geometry;
}