+void x264_frame_push_blank_unused( x264_t *h, x264_frame_t *frame );
+x264_frame_t *x264_frame_pop_blank_unused( x264_t *h );
+void x264_weight_scale_plane( x264_t *h, uint8_t *dst, int i_dst_stride, uint8_t *src, int i_src_stride,
+ int i_width, int i_height, x264_weight_t *w );
+x264_frame_t *x264_frame_pop_unused( x264_t *h, int b_fdec );