BLEND_NORMAL      123 libavfilter/vf_blend.c     { "normal",     "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL},     0, 0, FLAGS, "mode" },\
BLEND_NORMAL      332 libavfilter/vf_blend.c         case BLEND_NORMAL:     param->blend = blend_normal;     break;