static int config_input_props(AVFilterLink *inlink) { AVFilterContext *ctx = inlink->dst; Frei0rContext *s = ctx->priv; if (!(s->instance = s->construct(inlink->w, inlink->h))) { av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance"); return AVERROR(EINVAL); } return set_params(ctx, s->params); }