How to open mms:// url in Libav

mms_open.c

/*
 * How to open mms:// url in Libav
 *
 * Libav 12 will sport a chained protocol that aliases to the following
 *
 */


int example_open(AVFormatContext **ic, const char *url)
{
    const char *protos[2] = {"mmsh://", "mmst://"};
    char *path            = NULL;
    char buf[1024]        = {0};
    int i, ret;

    if (av_strstart(url, "mms://", &path)) {
        for (i = 0; i < 2; i++) {
            av_strlcatf(buf, 1024, "%s%s", protos[i], path);
            ret = avformat_open_input(ic, buf, NULL, NULL);
            if (ret >= 0)
                break;
        }
    } else {
        ret = avformat_open_input(ic, buf, NULL, NULL);
    }

    return ret;
}