Function av_opt_set_chlayout

libavutil/opt.c:1000–1013

}

int av_opt_set_chlayout(void *obj, const char *name,
                        const AVChannelLayout *channel_layout,
                        int search_flags)
{
    AVChannelLayout *dst;
    int ret;

    ret = opt_set_init(obj, name, search_flags, AV_OPT_TYPE_CHLAYOUT, NULL, NULL,
                       (void**)&dst);
    if (ret < 0)
        return ret;

    return av_channel_layout_copy(dst, channel_layout);
}

static void format_duration(char *buf, size_t size, int64_t d)
{