// Courtesy functionality - allows regionalised filtering
extern mlt_frame composite_copy_region( mlt_transition, mlt_frame, mlt_position );
+extern void composite_line_yuv( uint8_t *dest, uint8_t *src, int width, uint8_t *alpha_b,
+ uint8_t *alpha_a, int weight, uint16_t *luma, int soft, uint32_t step );
#endif