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

⌈⌋ branch:  streamtuner2


Check-in [2116c28445]

Overview
Comment:Extended generic JSON extractor, to understand a few common field aliases. Add fallbacks for mime_app lookup in case */* is absent. Simplified %rowfield injection, which is commonly unused anyway.
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SHA1: 2116c28445ebb68ab3ccc133c6185029b565e6a9
User & Date: mario on 2015-04-26 22:24:17
Other Links: manifest | tags
Context
2015-04-26
23:49
Document changes, fixes, new features in 2.1.7 check-in: 3cc9821dbb user: mario tags: trunk, 2.1.7
22:24
Extended generic JSON extractor, to understand a few common field aliases. Add fallbacks for mime_app lookup in case */* is absent. Simplified %rowfield injection, which is commonly unused anyway. check-in: 2116c28445 user: mario tags: trunk
22:22
Uneeded windows desktop shortcut. check-in: 90605cbddc user: mario tags: trunk
Changes

Modified action.py from [18fc32c37f] to [aa42f204ad].

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# encoding: UTF-8
# api: streamtuner2
# type: functions
# cagtegory: io
# title: play/record actions
# description: Starts audio applications, guesses MIME types for URLs
# version: 0.9
# priority: core
#
# Multimedia interface for starting audio players, recording app,
# or web browser (listed as "url/http" association in players).
# It maps audio MIME types, and extracts/converts playlist types
# (PLS, M3U, XSPF, SMIL, JSPF, ASX, raw urls).
#



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# encoding: UTF-8
# api: streamtuner2
# type: functions
# category: io
# title: play/record actions
# description: Starts audio applications, guesses MIME types for URLs
# version: 1.0
# priority: core
#
# Multimedia interface for starting audio players, recording app,
# or web browser (listed as "url/http" association in players).
# It maps audio MIME types, and extracts/converts playlist types
# (PLS, M3U, XSPF, SMIL, JSPF, ASX, raw urls).
#
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    return listfmt_t.get(t, t) # e.g. "pls" or still "text/x-unknown"


# Convert MIME type into list of ["audio/xyz", "audio/*", "*/*"]
# for comparison against configured record/play association.
def mime_app(fmt, cmd_list):
    major = fmt[:fmt.find("/")]
    for match in [ fmt, major + "/*", "*/*" ]:
        if cmd_list.get(match):
            return cmd_list[match]




# 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.
#
def interpol(cmd, url, source="pls", row={}):

    # inject other meta fields
    row = copy.copy(row)
    if row:
        for field in row:
            cmd = cmd.replace("%"+field, "%r" % row.get(field))

    # add default if cmd has no %url placeholder
    if cmd.find("%") < 0:
        cmd = cmd + " %pls"
        # "pls" as default requires no conversion for most channels, and seems broadly supported by players

    # standard placeholders
    for dest, rx in placeholder_map.items():
        if re.search(rx, cmd, re.X):
            # from .pls to .m3u
            fn_or_urls = convert_playlist(url, listfmt(source), listfmt(dest), local_file=True, row=row)
            # insert quoted URL/filepath
            return re.sub(rx, quote(fn_or_urls), cmd, 2, re.X)

    return "false"


# Substitute .pls URL with local .m3u, or direct srv addresses, or leaves URL asis.
#  · Takes a single input `url` (and original row{} as template).
#  · But returns a list of [urls] after playlist extraction.
#  · If repackaging as .m3u/.pls/.xspf, returns the local [fn].
#







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    return listfmt_t.get(t, t) # e.g. "pls" or still "text/x-unknown"


# Convert MIME type into list of ["audio/xyz", "audio/*", "*/*"]
# for comparison against configured record/play association.
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")



# 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.
#
def interpol(cmd, url, source="pls", row={}):

    # Inject other meta fields (%title, %genre, %playing, %format, etc.)
    row = copy.copy(row)

    for field in set(re.findall("%(\w+)", cmd)).intersection(row.keys()):
        cmd = cmd.replace("%"+field, "%r" % row.get(field))

    # Add default %pls if cmd has no %url placeholder
    if cmd.find("%") < 0:
        cmd = cmd + " %pls"
        # "pls" as default requires no conversion for most channels, and seems broadly supported by players

    # Playlist type placeholders (%pls, %m3u, %xspf, etc.)
    for dest, rx in placeholder_map.items():
        if re.search(rx, cmd, re.X):
            # from .pls to .m3u
            fn_or_urls = convert_playlist(url, listfmt(source), listfmt(dest), local_file=True, row=row)
            # insert quoted URL/filepath
            return re.sub(rx, quote(fn_or_urls), cmd, 2, re.X)

    return "/bin/false"


# Substitute .pls URL with local .m3u, or direct srv addresses, or leaves URL asis.
#  · Takes a single input `url` (and original row{} as template).
#  · But returns a list of [urls] after playlist extraction.
#  · If repackaging as .m3u/.pls/.xspf, returns the local [fn].
#
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    # Extract only URLs from given source type
    def rows(self, fmt=None):
        if not fmt:
            fmt = self.probe_fmt()
        log.DATA("input extractor/regex:", fmt, len(self.src))

        # specific extractor implementations
        if fmt in dir(self):
            try:
                return getattr(self, fmt)()
            except Exception as e:
                log.WARN("Native {} parser failed on input (improper encoding, etc)".format(fmt), e)

        # regex scheme
        rules = self.extr_urls[fmt]







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    # Extract only URLs from given source type
    def rows(self, fmt=None):
        if not fmt:
            fmt = self.probe_fmt()
        log.DATA("input extractor/regex:", fmt, len(self.src))

        # specific extractor implementations
        if hasattr(self, fmt):
            try:
                return getattr(self, fmt)()
            except Exception as e:
                log.WARN("Native {} parser failed on input (improper encoding, etc)".format(fmt), e)

        # regex scheme
        rules = self.extr_urls[fmt]
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        ),
        "jamj": dict(
            url   = r" (?x) \"audio\" \s*:\s* \"(\w+:\\?/\\?/[^\"\s]+)\" ",
            title = r" (?x) \"name\" \s*:\s* \"([^\"]+)\" ",
            unesc = "json",
        ),
        "json": dict(
            url   = r" (?x) \"url\" \s*:\s* \"(\w+:\\?/\\?/[^\"\s]+)\" ",
            title = r" (?x) \"title\" \s*:\s* \"([^\"]+)\" ",



            unesc = "json",
        ),
        "asf": dict(
            url   = r" (?m) ^ \s*Ref\d+ = (\w+://[^\s]+) ",
            unesc = "xml",
        ),
        "url": dict(







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        ),
        "jamj": dict(
            url   = r" (?x) \"audio\" \s*:\s* \"(\w+:\\?/\\?/[^\"\s]+)\" ",
            title = r" (?x) \"name\" \s*:\s* \"([^\"]+)\" ",
            unesc = "json",
        ),
        "json": dict(
            url   = r" (?x) \"(?:url|audio|stream)\" \s*:\s* \"(\w+:\\?/\\?/[^\"\s]+)\" ",
            title = r" (?x) \"(?:title|name|station)\" \s*:\s* \"([^\"]+)\" ",
            playing = r" (?x) \"(?:playing|current|description)\" \s*:\s* \"([^\"]+)\" ",
            homepage= r" (?x) \"(?:homepage|website|info)\" \s*:\s* \"([^\"]+)\" ",
            genre = r" (?x) \"(?:genre|keywords|category)\" \s*:\s* \"([^\"]+)\" ",
            unesc = "json",
        ),
        "asf": dict(
            url   = r" (?m) ^ \s*Ref\d+ = (\w+://[^\s]+) ",
            unesc = "xml",
        ),
        "url": dict(
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    def pls(self):
        fieldmap = dict(file="url", title="title")
        rows = {}
        for field,num,value in re.findall("^\s* ([a-z_-]+) (\d+) \s*=\s* (.*) $", self.src, re.M|re.I|re.X):
            if not num in rows:
                rows[num] = {}
            field = fieldmap.get(field.lower())
            if field:
                rows[num][field] = value.strip()
        return [rows[str(i)] for i in sorted(map(int, rows.keys()))]


    # Add placeholder fields to extracted row
    def mkrow(self, row, title=None):
        url = row.get("url", "")







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    def pls(self):
        fieldmap = dict(file="url", title="title")
        rows = {}
        for field,num,value in re.findall("^\s* ([a-z_-]+) (\d+) \s*=\s* (.*) $", self.src, re.M|re.I|re.X):
            if not num in rows:
                rows[num] = {}
            field = fieldmap.get(field.lower())
            if field and len(value):
                rows[num][field] = value.strip()
        return [rows[str(i)] for i in sorted(map(int, rows.keys()))]


    # Add placeholder fields to extracted row
    def mkrow(self, row, title=None):
        url = row.get("url", "")