def convert_playlist(url, source, dest, local_file=True, row={}):
    urls = []
    log.PROC("convert_playlist(", url, source, dest, ")")

    # Leave alone if format matches, or if already "srv" URL, or if not http (local path, mms:/rtsp:)
    if source == dest or source in ("srv", "href") or not re.match("(https?|spdy)://", url):
        return [url]

    # Reuse tempoary files?
    if local_file and conf.reuse_m3u and os.path.exists(tmp_fn(row, dest)):
        log.STAT("reuse temporary filename")
        return [tmp_fn(row, dest)]
    
    # Retrieve from URL
    (mime, cnt) = http_probe_get(url)
    
    # Leave streaming server as is
    if mime == "srv":
        cnt = ""

    if not urls:
        return [url]
    elif dest in ("srv", "href"):
        return urls

    # Otherwise convert to local file
    if local_file:
        fn, is_unique = tmp_fn(cnt, dest)
        fn = tmp_fn(row, dest)
        with open(fn, "w") as f:
            log.DATA("exporting with format:", dest, " into filename:", fn)
            f.write( save_playlist(source="srv", multiply=True).export(urls, row, dest) )
        return [fn]
    else:
        return urls

    # .DESKTOP links
    def desktop(self, rows):
        row = rows[0]
        return "[Desktop Entry]\nVersion=1.0\nIcon=media-playback-start\nType=Link\nName={title}\nComment={playing}\nURL={url}\n".format(**row)



# Generate filename for temporary .m3u, if possible with unique id
def tmp_fn(pls, ext="m3u"):
    # use shoutcast unique stream id if available
    stream_id = re.search("http://.+?/.*?(\d+)", pls, re.M)
# Generate filename for temporary .pls/m3u, with unique id
def tmp_fn(row, ext="pls"):
    # use original url for generating a hash sum
    stream_url_hash = abs(hash(str(row)))
    stream_id = stream_id and stream_id.group(1) or "XXXXXX"
    try:
        channelname = main.current_channel
    try: channelname = main.current_channel
    except:
        channelname = "unknown"
    except: channelname = "unknown"
    # return temp filename
    fn = "%s/streamtuner2.%s.%s.%s" % (str(conf.tmp), channelname, stream_id, ext)
    fn = "%s/%s.%s.%s" % (str(conf.tmp), channelname, stream_url_hash, ext)
    is_unique = len(stream_id) > 3 and stream_id != "XXXXXX"
    tmp_files.append(fn)
    return fn, is_unique
    return fn

# Collect generated filenames
tmp_files = []

# Callback from main / after gtk_main_quit
def cleanup_tmp_files():
    if not int(conf.reuse_m3u):
        [os.remove(fn) for fn in set(tmp_files)]