DIR_Y             394 libavfilter/vf_colorconstancy.c             get_deriv(ctx, td, 0, DIR_Y, INDEX_TEMP, INDEX_NORM, width , nb_threads);
DIR_Y             402 libavfilter/vf_colorconstancy.c         get_deriv(ctx, td, 0, DIR_Y, INDEX_TEMP, INDEX_DX,   width , nb_threads);
DIR_Y             405 libavfilter/vf_colorconstancy.c         get_deriv(ctx, td, 1, DIR_Y, INDEX_TEMP, INDEX_DY,   width , nb_threads);
DIR_Y             410 libavfilter/vf_colorconstancy.c         get_deriv(ctx, td, 0, DIR_Y, INDEX_TEMP, INDEX_DX,   width , nb_threads);
DIR_Y             413 libavfilter/vf_colorconstancy.c         get_deriv(ctx, td, 2, DIR_Y, INDEX_TEMP, INDEX_DY,   width , nb_threads);
DIR_Y             416 libavfilter/vf_colorconstancy.c         get_deriv(ctx, td, 1, DIR_Y, INDEX_TEMP, INDEX_DXY,  width , nb_threads);