prelut_interp_1d_linear  269 libavfilter/vf_lut3d.c     c.r = prelut_interp_1d_linear(prelut, 0, s->r);
prelut_interp_1d_linear  270 libavfilter/vf_lut3d.c     c.g = prelut_interp_1d_linear(prelut, 1, s->g);
prelut_interp_1d_linear  271 libavfilter/vf_lut3d.c     c.b = prelut_interp_1d_linear(prelut, 2, s->b);