Function opt_copy_array

libavutil/opt.c:2121–2153

}

static int opt_copy_array(void *logctx, const AVOption *o,
                          void **pdst, const void * const *psrc)
{
    unsigned nb_elems = *opt_array_pcount(psrc);
    void         *dst = NULL;
    int ret;

    if (*pdst == *psrc) {
        *pdst                   = NULL;
        *opt_array_pcount(pdst) = 0;
    }

    opt_free_array(o, pdst, opt_array_pcount(pdst));

    dst = av_calloc(nb_elems, opt_type_desc[TYPE_BASE(o->type)].size);
    if (!dst)
        return AVERROR(ENOMEM);

    for (unsigned i = 0; i < nb_elems; i++) {
        ret = opt_copy_elem(logctx, TYPE_BASE(o->type),
                            opt_array_pelem(o, dst, i),
                            opt_array_pelem(o, *(void**)psrc, i));
        if (ret < 0) {
            opt_free_array(o, &dst, &nb_elems);
            return ret;
        }
    }

    *pdst                   = dst;
    *opt_array_pcount(pdst) = nb_elems;

    return 0;
}

int av_opt_copy(void *dst, const void *src)
{