ma                115 libavfilter/vf_colormatrix.c     double det = ma * (me * mi - mf * mh) - mb * (md * mi - mf * mg) + mc * (md * mh - me * mg);
ma                121 libavfilter/vf_colormatrix.c     ime = det * (ma * mi - mc * mg);
ma                122 libavfilter/vf_colormatrix.c     imf = det * (mc * md - ma * mf);
ma                124 libavfilter/vf_colormatrix.c     imh = det * (mb * mg - ma * mh);
ma                125 libavfilter/vf_colormatrix.c     imi = det * (ma * me - mb * md);