static int ivi_mc(ivi_mc_func mc, int16_t *buf, const int16_t *ref_buf, int offs, int mv_x, int mv_y, uint32_t pitch, int mc_type) { int ref_offs = offs + mv_y * pitch + mv_x; if (offs < 0 || ref_offs < 0 || !ref_buf) return AVERROR_INVALIDDATA; mc(buf + offs, ref_buf + ref_offs, pitch, mc_type); return 0; }