Internet radio browser GUI for music/video streams from various directory services.

⌈⌋ ⎇ branch:  streamtuner2


Check-in [5b63504d79]

Overview
Comment:Implement resolve_urn() and handlers to look up "urn:xxx:iii" stream urls pripr playback. (Currently just used by reciva and delicast. Now allows to remove channel.row() override.)
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SHA1: 5b63504d79422112f000d55d431ba5e85c0dc5ec
User & Date: mario on 2016-11-06 11:39:30
Other Links: manifest | tags
Context
2016-11-06
11:40
Also perform an action.resolve_urn() right when accessing a row. Thus the stremaing lsits get updated on any .row() acccess (= now centrally covered). check-in: 2859a51985 user: mario tags: trunk
11:39
Implement resolve_urn() and handlers to look up "urn:xxx:iii" stream urls pripr playback. (Currently just used by reciva and delicast. Now allows to remove channel.row() override.) check-in: 5b63504d79 user: mario tags: trunk
01:57
Keep some notes about how to specify application paths on Windows. check-in: 2fb9158589 user: mario tags: trunk
Changes
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Modified action.py from [8f35066d04] to [f35a591c53].

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# Preferred probing order of known formats
playlist_fmt_prio = [
   "pls", "xspf", "asx", "smil", "jamj", "json", "m3u", "asf", "raw"
]

# custom stream domain (with faux audioformat) handlers
#  - may contain both "audio/x-service" handlers to convert playlist formsts
#  - and "urn:service" resolvers (which fetch an #id/page to extract actual stram url)
handler = {
    # "audio/soundcloud": callback(),
    # "audio/soundcloud": playlist_callback(),
    # "urn:reciva": stream_resolve(),
}



# Exec wrapper
def run(cmd):
    log.EXEC(cmd)
    try:    os.system("start %s" % cmd if conf.windows else cmd + " &")
    except: log.ERR("Command not found:", cmd)

# Open help browser, streamtuner2 pages
def help(*args):
    run("yelp /usr/share/doc/streamtuner2/help/")

# Invokes player/recorder for stream url and format
def run_fmt_url(row={}, audioformat="audio/mpeg", source="pls", assoc={}, append=None):
    if audioformat in handler:
        handler[audioformat](row, audioformat, source, assoc)
    elif row.get("url", "").startswith("urn:"):
        row = resolve_urn(row);
    else:
        cmd = mime_app(audioformat, assoc)
        cmd = interpol(cmd, source, row)
        if append:
            cmd = re.sub('(["\']?\s*)$', " " + append + "\\1", cmd)
        run(cmd)
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def mime_app(fmt, cmd_list):
    major = fmt[:fmt.find("/")]
    for match in [ fmt, major + "/*", "*/*", "video/*", "audio/*" ]:
        if cmd_list.get(match):
            return cmd_list[match]
    log.ERR("No audio player for stream type found")


# Is called upon rows containing an url starting with "urn:service:#id",
# calls the handler from the channel plugin to look up the page and find
# the actual streaming url
def resolve_urn(row):
    if row["url"].startswith("urn:"):
        urn_service = ":".join(row["url"].split(":")[:2])
        if urn_service in handler:
            row = handler[urn_service](row)
        else:
            log.WARN("There's currently no action.handler[] for %s:#id streaming addresses (likely disabled channel plugin)." % urn_service)
    return row


# Replaces instances of %m3u, %pls, %srv in a command string
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
#  · Also understands short aliases %l, %f, %d.
#  · And can embed %title or %genre placeholders.
#  · Replace .pls URL with local .m3u file depending on map.
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