static mlt_geometry composite_calculate( mlt_transition transition, struct mlt_geometry_item_s *result, int nw, int nh, double position )
{
// Structures for geometry
mlt_geometry start = transition_parse_keys( transition, "geometry", "geometries", nw, nh );
// Do the calculation
geometry_calculate( transition, "geometries", result, position );
return start;
}
static inline float composite_calculate_key( mlt_transition transition, const char *name, const char *store, int norm, float position )
{
// Struct for the result
struct mlt_geometry_item_s result;
// Structures for geometry
transition_parse_keys( transition, name, store, norm, 0 );
// Do the calculation
geometry_calculate( transition, store, &result, position );
return result.x;
}
static int filter_get_image( mlt_frame frame, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
{
// Pop the top of stack now
mlt_filter filter = mlt_frame_pop_service( frame );
// Get the image from the frame
*format = mlt_image_yuv422;
int error = mlt_frame_get_image( frame, image, format, width, height, 1 );
// Get the image from the frame
if ( error == 0 )
{
if ( filter != NULL )
{
// Get the filter properties
mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
mlt_profile profile = mlt_service_profile( MLT_FILTER_SERVICE( filter ) );
// Structures for geometry
struct geometry_s result;
struct geometry_s start;
struct geometry_s end;
// Retrieve the position
float position = mlt_filter_get_progress( filter, frame );
// Now parse the geometries
geometry_parse( &start, NULL, mlt_properties_get( properties, "start" ), profile->width, profile->height );
geometry_parse( &end, &start, mlt_properties_get( properties, "end" ), profile->width, profile->height );
// Do the calculation
geometry_calculate( &result, &start, &end, position, *width, *height );
// Now actually render it
obscure_render( *image, *width, *height, result );
}
}
return error;
}
