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

⌈⌋ ⎇ branch:  streamtuner2


Check-in [e663445700]

Overview
Comment:Shorten first_show(). Plugins don't initialize on startup anymore, but again on first channel tab selection. Use first entry from categories as current, if none is set. Remove some obsolete code. Display now matches on fresh installations as well as with existing cache/state.
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Files: files | file ages | folders
SHA1: e6634457005a4cebb2b78ef2511c589f5e04c593
User & Date: mario on 2015-04-11 14:12:57
Other Links: manifest | tags
Context
2015-04-11
16:08
Fix bookmarks tab swtich on search completion. check-in: 98f8aea21d user: mario tags: trunk
14:12
Shorten first_show(). Plugins don't initialize on startup anymore, but again on first channel tab selection. Use first entry from categories as current, if none is set. Remove some obsolete code. Display now matches on fresh installations as well as with existing cache/state. check-in: e663445700 user: mario tags: trunk
14:10
Slim down first_show() in main.channel_switch(). check-in: 97a832d8f2 user: mario tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Modified channels/__init__.py from [08c3ab8bab] to [f719a01f46]. 

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# encoding: UTF-8
# api: streamtuner2
# type: base
# category: ui
# title: Channel plugins
# description: Base implementation for channels and feature plugins
# version: 1.2
# 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
# config: -
# priority: core
#
#
# Just exports GenericChannel and ChannelPlugin.
# GenericChannel implements the basic GUI functions and defines
# the default channel data structure. It implements base and
# fallback logic for all other channel implementations.

#
# Built-in channels derive directly from generic. Additional
# channels don't have a pre-defined Notebook tab in the glade
# file. They derive from the ChannelPlugins class instead, which
# adds the required gtk Widgets manually.
#
# Makes module scanning available.  Checks for conf.share, so
# should pick up /usr/share/streamtuner2/channels/*.py plugins
# as well as local ./channels/*.* - Needs rework for in-zip
# searching.
#

import gtk
from uikit import uikit
from config import *
import ahttp as http
import action
import favicon



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# encoding: UTF-8
# api: streamtuner2
# type: class
# category: ui
# title: Channel plugins
# description: Base implementation for channels and feature plugins
# version: 1.3
# 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
# 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
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# generic channel module                            ---------------------------------------
class GenericChannel(object):

    # desc
    meta = { "config": [] }

    homepage = "http://fossil.include-once.org/streamtuner2/"
    base_url = ""
    listformat = "pls"
    audioformat = "audio/mpeg" # fallback value
    config = []
    has_search = False

    # categories
    categories = ["empty", ]
    catmap = {}
    current = ""
    default = "empty"
    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 = {}      #meta information dicts
    liststore = {}    #gtk data structure
    gtk_list = None   #gtk widget
    gtk_cat = None    #gtk widget

    # 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", {}], ],








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# generic channel module                            ---------------------------------------
class GenericChannel(object):

    # desc
    meta = { "config": [] }
    config = []
    homepage = "http://fossil.include-once.org/streamtuner2/"
    base_url = ""
    listformat = "pls"
    audioformat = "audio/mpeg" # fallback value

    has_search = False

    # categories
    categories = ["empty", ]
    catmap = {}
    current = None

    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", {}], ],
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    ]
    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="gtk-folder")]
    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")]

    
    # regex            
    rx_www_url = re.compile("""(www(\.\w+[\w-]+){2,}|(\w+[\w-]+[ ]?\.)+(com|FM|net|org|de|PL|fr|uk))""", re.I)



    #--------------------------- initialization --------------------------------








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    ]
    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="gtk-folder")]
    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)



    #--------------------------- initialization --------------------------------
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        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)
        
        # stub for ST2 main window / dispatcher
        self.parent = stub_parent(None)

        # only if streamtuner2 is run in graphical mode        
        if (parent):
            self.cache()
            self.gui(parent)
        pass




        
    # initialize Gtk widgets / data objects
    def gui(self, parent):
        #print(self.module + ".gui()")

        # 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()
        #uikit.tree(self.gtk_cat, self.categories, title="Category", icon=gtk.STOCK_OPEN);
        
        # 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])

        # load default category
        #if (self.current):
        #    self.load(self.current)
        #else:
        if True:
            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)








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        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)
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    # load data,
    # update treeview content
    def load(self, category, force=False):

        # get data from cache or download
        if (force or not category in self.streams):
            __print__(dbg.PROC, "load", "update_streams")
            self.parent.status("Updating streams...")
            self.parent.status(-0.1)
            if category == "empty":
                new_streams = self.empty_stub
            else:
                new_streams = self.update_streams(category)
  
            if new_streams:









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    # load data,
    # update treeview content
    def load(self, category, force=False):

        # 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:
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                # invalidate gtk list cache
                #if (self.liststore.has_key(category)):
                #    del self.liststore[category]
  
            else:
                # parse error
                self.parent.status("category parsed empty.")
                self.streams[category] = [{"title":"no contents found on directory server","bitrate":0,"max":0,"listeners":0,"playing":"error","favourite":0,"deleted":0}]
                __print__(dbg.INFO, "Oooops, parser returned nothing for category " + category)
                
        # assign to treeview model
        #self.streams[self.default] = []
        #if (self.liststore.has_key(category)):  # was already loded before
        #    self.gtk_list.set_model(self.liststore[category])
        #else:   # currently list is new, had not been converted to gtk array before
        #    self.liststore[category] = \
        uikit.do(lambda:uikit.columns(self.gtk_list, self.datamap, self.prepare(self.streams[category])))

        # set pointer
        self.current = category
        self.parent.status("")
        self.parent.status(1.0)
        pass
        
    # store current streams data
    def save(self):
        conf.save("cache/" + self.module, self.streams, gz=1)










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                # invalidate gtk list cache
                #if (self.liststore.has_key(category)):
                #    del self.liststore[category]
  
            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

        #if (self.liststore.has_key(category)):  # was already loded before
        #    self.gtk_list.set_model(self.liststore[category])
        #else:   # currently list is new, had not been converted to gtk array before
        #    self.liststore[category] = \
        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)
        pass
        
    # store current streams data
    def save(self):
        conf.save("cache/" + self.module, self.streams, gz=1)
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        if self.current == category:
            self.reload()
    
        
    # display .current category, once notebook/channel tab is first opened
    def first_show(self):


        if (self.shown != 55555):

            __print__(dbg.PROC, self.module+".first_show()")
        
            # if category tree is empty, initialize it
            if not self.categories:
                __print__(dbg.PROC, self.module+"first_show: reload_categories");
                #self.parent.thread(self.reload_categories)
                try:
                    self.reload_categories()
                except:
                    __print__(dbg.ERR, "HTTP error or extraction failure.")
                    self.categories = ["empty"]
                self.display_categories()
                self.current = self.categories.keys()[0]
                __print__(dbg.STAT, "Use first category as current =", self.current)
                self.load(self.current)
        
            # load current category
            else:

                __print__(dbg.STAT, self.module+".first_show(): load current category =", self.current);

                self.load(self.current)


            
            # put selection/cursor on last position
            try:
                __print__(dbg.STAT, self.module+".first_show()", "select last known category treelist position =", self.shown)

                self.gtk_list.get_selection().select_path(self.shown)
            except:
                pass
                
            # this method will only be invoked once
            self.shown = 55555












    # update categories, save, and display                
    def reload_categories(self):
    
        # get data and save
        self.update_categories()








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        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

        self.current = self.str_from_struct(self.categories) or None
        __print__(dbg.STAT, self.module, "→ first_show(); use first category as current =", self.current)
        try:
            self.load(self.current)
        except:
            pass
    
        # put selection/cursor on last position

        __print__(dbg.STAT, self.module+".first_show()", "select last known category treelist position =", self.shown)
        try:
            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()
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            "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.lt)   # 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








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            "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
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