}
#if DBG_FILTER
fprintf(stderr, "update: chunked (-> %zu) (w: %zu, r: %zu)\n", ptr->buflen, stream->writepos, stream->readpos);
}
#if DBG_FILTER
fprintf(stderr, "update: chunked (-> %zu) (w: %zu, r: %zu)\n", ptr->buflen, stream->writepos, stream->readpos);