void sws_freeFilter(SwsFilter *filter) { if (!filter) return; if (filter->lumH) sws_freeVec(filter->lumH); if (filter->lumV) sws_freeVec(filter->lumV); if (filter->chrH) sws_freeVec(filter->chrH); if (filter->chrV) sws_freeVec(filter->chrV); av_free(filter); }