# encoding: UTF-8
# api: streamtuner2
# type: class
# category: ui
# title: Channel plugins
# description: Base implementation for channels and feature plugins
# version: 1.5
# license: public domain
# author: mario
# url: http://fossil.include-once.org/streamtuner2/
# pack:
# bookmarks.py configwin.py streamedit.py history.py search.py links.py
# icast.py internet_radio.py itunes.py jamendo.py live365.py global_key.py
# modarchive.py myoggradio.py punkcast.py radiobrowser.py radiotray.py
# shoutcast.py surfmusik.py timer.py tunein.py xiph.py youtube.py
# exportcat.py useragentswitcher.py somafm.py dnd.py
# config: -
# priority: core
#
# GenericChannel implements the basic GUI functions and defines
# the default channel data structure. It implements fallback logic
# for all other channel implementations. Only `bookmarks` uses it
# directly.
#
# All other plugins don't have a pre-defined Notebook tab in the
# GtkBuilder description. They derive from ChannelPlugins therefore,
# which constructs and registers the required gtk widgets manually.
import gtk
from uikit import uikit
from config import *
import ahttp as http
import action
import favicon
import os.path
import xml.sax.saxutils
import re
import copy
import inspect
# Only export plugin classes
__all__ = [
"GenericChannel", "ChannelPlugin"
]
# generic channel module ---------------------------------------
class GenericChannel(object):
# control attributes
meta = { "config": [] }
base_url = ""
listformat = "pls"
audioformat = "audio/mpeg" # fallback value
has_search = False
# categories
categories = ["empty", ]
catmap = {}
shown = None # last selected entry in stream list, also indicator if notebook tab has been selected once / stream list of current category been displayed yet
# gui + data
streams = {} # Station list dict, associates each genre to a list of stream rows
gtk_list = None # Gtk widget for station treeview
gtk_cat = None # Gtk widget for category columns
# mapping of stream{} data into gtk treeview/treestore representation
datamap = [
# coltitle width [ datasrc key, type, renderer, attrs ] [cellrenderer2], ...
["", 20, ["state", str, "pixbuf", {}], ],
["Genre", 65, ['genre', str, "t", {}], ],
["Station Title",275, ["title", str, "text", {"strikethrough":11, "cell-background":12, "cell-background-set":13}], ["favicon", gtk.gdk.Pixbuf, "pixbuf", {}], ],
["Now Playing", 185, ["playing", str, "text", {"strikethrough":11}], ], #{"width":20}
["Listeners", 45, ["listeners", int, "t", {"strikethrough":11}], ],
#["Max", 45, ["max", int, "t", {}], ],
["Bitrate", 35, ["bitrate", int, "t", {}], ],
["Homepage", 160, ["homepage", str, "t", {"underline":10}], ],
[False, 25, ["url", str, "t", {"strikethrough":11}], ],
["Format", 20, ["format", str, None, {}], ],
[False, 0, ["favourite", bool, None, {}], ],
[False, 0, ["deleted", bool, None, {}], ],
[False, 0, ["search_col", str, None, {}], ],
[False, 0, ["search_set", bool, None, {}], ],
]
rowmap = [] # [state,genre,title,...] field enumeration still needed separately
titles = {} # for easier adapting of column titles in datamap
# for empty grouping / categories
placeholder = [dict(genre="./.", title="Subcategory placeholder", playing="./.", url="none:", listeners=0, bitrate=0, homepage="", state="gtkfolder")]
empty_stub = [dict(genre="./.", title="No categories found (HTTP error)", playing="Try Channel→Reload Categories later..", url="none:", listeners=0, bitrate=0, homepage="", state="gtk-stop")]
nothing_found = [dict(genre="./.", title="No contents found on directory server", playing="Notice", listeners=0, bitrate=0, state="gtk-info")]
# regex
rx_www_url = re.compile("""(www(\.\w+[\w-]+){2,}|(\w+[\w-]+[ ]?\.)+(com|FM|net|org|de|PL|fr|uk))""", re.I)
#-- keep track of currently selected genre/category
__current = None
@property
def current(self):
return self.__current
@current.setter
def current(self, newcat):
__print__(dbg.PROC, "{}.current:={} ← from {}".format(self.module, newcat, [inspect.stack()[x][3] for x in range(1,4)]))
self.__current = newcat
return self.__current
#--------------------------- initialization --------------------------------
# constructor
def __init__(self, parent=None):
#self.streams = {}
self.gtk_list = None
self.gtk_cat = None
self.module = self.__class__.__name__
self.meta = plugin_meta(src = inspect.getcomments(inspect.getmodule(self)))
self.config = self.meta.get("config", [])
self.title = self.meta.get("title", self.module)
# add default options values to config.conf.* dict
conf.add_plugin_defaults(self.meta, self.module)
# Only if streamtuner2 is run in graphical mode
if (parent):
self.cache()
self.gui(parent)
# Stub for ST2 main window / dispatcher
else:
self.parent = stub_parent(None)
# initialize Gtk widgets / data objects
def gui(self, parent):
# save reference to main window/glade API
self.parent = parent
self.gtk_list = parent.get_widget(self.module+"_list")
self.gtk_cat = parent.get_widget(self.module+"_cat")
# category tree
self.display_categories()
# update column names
for field,title in list(self.titles.items()):
self.update_datamap(field, title=title)
# prepare stream list
if (not self.rowmap):
for row in self.datamap:
for x in range(2, len(row)):
self.rowmap.append(row[x][0])
# Initialize stations TreeView
uikit.columns(self.gtk_list, self.datamap, [])
# add to main menu
uikit.add_menu([parent.channelmenuitems], self.meta["title"], lambda w: parent.channel_switch_by_name(self.module) or 1)
# Statusbar stub (defers to parent/main window, if in GUI mode)
def status(self, *v):
if self.parent: self.parent.status(*v)
else: __print__(dbg.INFO, "status():", *v)
#--------------------- streams/model data accesss ---------------------------
# Get list of stations in current category
def stations(self):
return self.streams.get(self.current, [])
# Convert ListStore iter to row number
def rowno(self):
(model, iter) = self.model_iter()
return model.get_path(iter)[0]
# Return ListStore object and Iterator for currently selected row in gtk.TreeView station list
def model_iter(self):
return self.gtk_list.get_selection().get_selected()
# Currently selected entry in stations list, return complete data dict
def row(self):
return self.stations() [self.rowno()]
# Fetches a single varname from currently selected station entry
def selected(self, name="url"):
return self.row().get(name)
# Inject status icon into currently selected row (used by main.bookmark() call)
def row_icon(self, gtkIcon = gtk.STOCK_ABOUT):
try:
# Updates gtk_list store, set icon in current display.
# Since it is used by bookmarks, would be reshown with next display() anyhow,
# and there's no need to invalidate the ls cache, because that's referenced by model anyhow.
(model,iter) = self.model_iter()
model.set_value(iter, 0, gtkIcon)
except:
pass
#------------------------ base implementations -----------------------------
# read previous channel/stream data, if there is any
def cache(self):
# stream list
cache = conf.load("cache/" + self.module)
if (cache):
self.streams = cache
# categories
cache = conf.load("cache/categories_" + self.module)
if (cache):
self.categories = cache
# catmap (optional)
cache = conf.load("cache/catmap_" + self.module)
if (cache):
self.catmap = cache
pass
# make private copy of .datamap and modify field (title= only ATM)
def update_datamap(self, search="name", title=None):
if self.datamap == GenericChannel.datamap:
self.datamap = copy.deepcopy(self.datamap)
for i,row in enumerate(self.datamap):
if row[2][0] == search:
row[0] = title
# switch stream category,
# load data,
# update treeview content
def load(self, category, force=False):
# called to early
if not category:
print "load(None)"
return
# get data from cache or download
if force or not category in self.streams:
__print__(dbg.PROC, "load", "update_streams")
self.status("Updating streams...")
self.status(-0.1)
if category == "empty":
new_streams = self.empty_stub
else:
new_streams = self.update_streams(category)
if new_streams:
# check and modify entry;
# assert that title and url are present
modified = []
for row in new_streams:
if len(set(["", None]) & set([row.get("title"), row.get("url")])):
continue
try:
modified.append( self.postprocess(row) )
except Exception as e:
__print__(e, dbg.DATA, "Missing title or url. Postprocessing failed:", row)
new_streams = modified
# don't lose forgotten streams
if conf.retain_deleted:
self.streams[category] = new_streams + self.deleted_streams(new_streams, self.streams.get(category,[]))
else:
self.streams[category] = new_streams
# save in cache
self.save()
else:
# parse error
self.status("Category parsed empty.")
self.streams[category] = self.nothing_found
__print__(dbg.INFO, "Oooops, parser returned nothing for category " + category)
# assign to treeview model
uikit.do(lambda:uikit.columns(self.gtk_list, self.datamap, self.prepare(self.streams[category])))
# set pointer
self.current = category
self.status("")
self.status(1.0)
# store current streams data
def save(self):
conf.save("cache/" + self.module, self.streams, gz=1)
# called occasionally while retrieving and parsing
def update_streams_partially_done(self, entries):
uikit.do(lambda: uikit.columns(self.gtk_list, self.datamap, entries))
# finds differences in new/old streamlist, marks deleted with flag
def deleted_streams(self, new, old):
diff = []
new = [row.get("url","http://example.com/") for row in new]
for row in old:
if ("url" in row and (row.get("url") not in new)):
row["deleted"] = 1
diff.append(row)
return diff
# prepare data for display
#
# - favourite icon
# - or deleted icon
#
def prepare(self, streams):
for i,row in enumerate(streams):
# state icon: bookmark star
if (conf.show_bookmarks and "bookmarks" in self.parent.channels and self.parent.bookmarks.is_in(streams[i].get("url", "file:///tmp/none"))):
streams[i]["favourite"] = 1
# state icon: INFO or DELETE
if (not row.get("state")):
if row.get("favourite"):
streams[i]["state"] = gtk.STOCK_ABOUT
if conf.retain_deleted and row.get("deleted"):
streams[i]["state"] = gtk.STOCK_DELETE
# favicons?
if conf.show_favicons:
# entry provides its own image
if "img" in row:
favicon_url = row["img"]
streams[i]["favicon"] = favicon.localcopy(favicon_url)
# get actual homepage favicon.png
elif "homepage" in row:
homepage_url = row.get("homepage")
# check for availability of PNG file, inject local icons/ filename
if homepage_url and favicon.available(homepage_url):
streams[i]["favicon"] = favicon.file(homepage_url)
return streams
# data preparations directly after reload
#
# - drop shoutcast homepage links
# - or find homepage name in title
#
def postprocess(self, row):
# deduce homepage URLs from title
# by looking for www.xyz.com domain names
if not row.get("homepage"):
url = self.rx_www_url.search(row.get("title", ""))
if url:
url = url.group(0).lower().replace(" ", "")
url = (url if url.find("www.") == 0 else "www."+url)
row["homepage"] = http.fix_url(url)
return row
# reload current stream from web directory
def reload(self):
self.load(self.current, force=1)
def switch(self):
self.load(self.current, force=0)
# update streams pane if currently selected (used by bookmarks.links channel)
def reload_if_current(self, category):
if self.current == category:
self.reload()
# display .current category, once notebook/channel tab is first opened
def first_show(self):
# Already processed
if (self.shown == 55555):
return
__print__(dbg.PROC, self.module, "→ first_show()", ", current=", self.current, ", categories=", len(self.categories))
# if category tree is empty, initialize it
if not self.categories:
__print__(dbg.PROC, self.module, "→ first_show() → reload_categories()");
try:
self.reload_categories()
except:
__print__(dbg.ERR, "HTTP error or extraction failure.")
self.categories = ["empty"]
self.display_categories()
# Select first category
if not self.current:
self.current = self.str_from_struct(self.categories) or None
__print__(dbg.STAT, self.module, "→ first_show(); use first category as current =", self.current)
self.shown = 0,
# Show current category in any case
__print__(dbg.UI, self.module, "→ first_show(); station list → load(", self.current, ")")
uikit.do(self.load, self.current)
# put selection/cursor on last position
if True:#self.shown != None:
__print__(dbg.STAT, self.module+".first_show()", "select last known category treelist position =", self.shown)
try:
uikit.do(lambda:self.gtk_list.get_selection().select_path(self.shown))
except:
pass
# Invoke only once
self.shown = 55555
# Retrieve first list value, or key from dict (-- used to get first category on init)
def str_from_struct(self, d):
if isinstance(d, (str)):
return d
elif isinstance(d, (dict)):
return self.str_from_struct(d.keys()) or self.str_from_struct(d.values())
elif isinstance(d, (list, tuple)):
return d[0] if len(d) else None
# update categories, save, and display
def reload_categories(self):
# get data and save
self.update_categories()
if self.categories:
conf.save("cache/categories_"+self.module, self.categories)
if self.catmap:
conf.save("cache/catmap_" + self.module, self.catmap);
# display outside of this non-main thread
uikit.do(self.display_categories)
# insert content into gtk category list
def display_categories(self):
# remove any existing columns
if self.gtk_cat:
[self.gtk_cat.remove_column(c) for c in self.gtk_cat.get_columns()]
# rebuild gtk.TreeView
uikit.tree(self.gtk_cat, self.categories, title="Category", icon=gtk.STOCK_OPEN);
# if it's a short list of categories, there's probably subfolders
if len(self.categories) < 20:
self.gtk_cat.expand_all()
# select any first element
#self.gtk_cat.get_selection().select_path("0") #set_cursor
self.currentcat()
# selected category
def currentcat(self):
(model, iter) = self.gtk_cat.get_selection().get_selected()
if (type(iter) == gtk.TreeIter):
self.current = model.get_value(iter, 0)
return self.current
#--------------------------- actions ---------------------------------
# Invoke action.play() for current station.
# Can be overridden to provide channel-specific "play" alternative
def play(self):
row = self.row()
if row and "url" in row:
# playlist and audio type
audioformat = row.get("format", self.audioformat)
listformat = row.get("listformat", self.listformat)
# invoke audio player
action.play(row, audioformat, listformat)
else:
self.status("No station selected for playing.")
return row
# Start streamripper/youtube-dl/etc
def record(self):
row = self.row()
if row and "url" in row:
audioformat = row.get("format", self.audioformat)
listformat = row.get("listformat", self.listformat)
action.record(row, audioformat, listformat)
return row
#--------------------------- utility functions -----------------------
# remove html <tags> from string
def strip_tags(self, s):
return re.sub("<.+?>", "", s)
# convert audio format nick/shortnames to mime types, e.g. "OGG" to "audio/ogg"
def mime_fmt(self, s):
# clean string
s = s.lower().strip()
# rename
map = {
"audio/mp3":"audio/mpeg", # Note the real mime type is /mpeg, but /mp3 is more understandable in the GUI
"ogg":"ogg", "ogm":"ogg", "xiph":"ogg", "vorbis":"ogg", "vnd.xiph.vorbis":"ogg",
"mp3":"mpeg", "mp":"mpeg", "mp2":"mpeg", "mpc":"mpeg", "mps":"mpeg",
"aac+":"aac", "aacp":"aac",
"realaudio":"x-pn-realaudio", "real":"x-pn-realaudio", "ra":"x-pn-realaudio", "ram":"x-pn-realaudio", "rm":"x-pn-realaudio",
# yes, we do video
"flv":"video/flv", "mp4":"video/mp4",
}
#map.update(action.listfmt_t) # list type formats (.m3u .pls and .xspf)
if map.get(s):
s = map[s]
# add prefix:
if s.find("/") < 1:
s = "audio/" + s
#
return s
# remove SGML/XML entities
def entity_decode(self, s):
return xml.sax.saxutils.unescape(s)
# convert special characters to &xx; escapes
def xmlentities(self, s):
return xml.sax.saxutils.escape(s)
# Extracts integer from string
def to_int(self, s):
i = re.findall("\d+", s) or [0]
return int(i[0])
# channel plugin without glade-pre-defined notebook tab
#
class ChannelPlugin(GenericChannel):
module = "abstract"
def gui(self, parent):
if not parent:
return
module = self.__class__.__name__
# two panes
vbox = gtk.HPaned()
vbox.show()
# category treeview
sw1 = gtk.ScrolledWindow()
sw1.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
sw1.set_property("width_request", 150)
sw1.show()
tv1 = gtk.TreeView()
tv1.set_property("width_request", 75)
tv1.set_property("enable_tree_lines", True)
tv1.connect("button_release_event", parent.on_category_clicked)
tv1.show()
sw1.add(tv1)
vbox.pack1(sw1, resize=False, shrink=True)
# stream list
sw2 = gtk.ScrolledWindow()
sw2.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
sw2.show()
tv2 = gtk.TreeView()
tv2.set_property("width_request", 200)
tv2.set_property("enable_tree_lines", True)
tv2.connect("row_activated", parent.on_play_clicked)
tv2.show()
sw2.add(tv2)
vbox.pack2(sw2, resize=True, shrink=True)
# prepare label
pixbuf = None
if "png" in self.meta:
pixbuf = uikit.pixbuf(self.meta["png"])
else:
png = get_data("channels/" + self.module + ".png")
pixbuf = uikit.pixbuf(png)
if pixbuf:
icon = gtk.image_new_from_pixbuf(pixbuf)
else:
icon = gtk.image_new_from_stock(gtk.STOCK_DIRECTORY, size=1)
label = gtk.HBox()
label.pack_start(icon, expand=False, fill=True)
label.pack_start(gtk.Label(self.meta.get("title", self.module)), expand=True, fill=True)
# pack it into an event container to catch double-clicks
ev_label = gtk.EventBox()
ev_label.add(label)
ev_label.connect('event', parent.on_homepage_channel_clicked)
plain_label = gtk.Label(self.module)
# to widgets
self.gtk_cat = tv1
parent.widgets[module + "_cat"] = tv1
self.gtk_list = tv2
parent.widgets[module + "_list"] = tv2
ev_label.show_all()
vbox.show_all()
parent.widgets["v_" + module] = vbox
parent.widgets["c_" + module] = ev_label
tv2.connect('button-press-event', parent.station_context_menu)
# try to initialize superclass now, before adding to channel tabs
GenericChannel.gui(self, parent)
# add notebook tab
tab = parent.notebook_channels.insert_page_menu(vbox, ev_label, plain_label, -1)
parent.notebook_channels.set_tab_reorderable(vbox, True)
# WORKAROUND for direct channel module imports,
# eases instantiations without GUI a little,
# reducing module dependencies (conf. / ahttp. / channels. / parent.) would be better
def stub_parent(object):
def __setattr__(self, name, value):
pass
def __getattr__(self, name):
return lambda *x: None
def status(self, *x):
pass