MAX_1D_LEVEL     1528 libavfilter/vf_lut3d.c     float lut[3][MAX_1D_LEVEL];
MAX_1D_LEVEL     1602 libavfilter/vf_lut3d.c             if (size < 2 || size > MAX_1D_LEVEL) {
MAX_1D_LEVEL     1641 libavfilter/vf_lut3d.c             if (size < 2 || size > MAX_1D_LEVEL) {