D 2015-03-25T16:24:15.252
L write\sa\splugin
N text/x-markdown
P 1917fddb852be91556943fb4e75428ddd67008c7
U mario
W 3080
Wrting a new plugin is often trivial.
Just create a new `channels/name.py` following this structure:
# title: MyPlugin
# description: my radio list
# version: 0.1
# type: channel
# category: radio
from channels import *
class myplugin (ChannelPlugin):
title = "MyNewChannel"
module = "myplugin"
homepage = "http://www.mymusicstation.com/"
has_search = False
titles = dict(listeners=False)
categories = []
catmap = {}
config = []
def update_categories(self):
self.categories = ["Pop", "Rock", "etc"]
def update_streams(self, cat, search=None):
entries = []
# ...
# get it from somewhere
# ...
return entries
The description block on top is used for the plugin management, and decorative purposes. Some fields like `title` and and `module` are repeated in the class declaration though.
Each plugin needs a `update_categories()` method. This can be a stub, if the channel plugin has a static list of genres. If so, just set the `categories = []` declaration right away. The method is only used if the default categories list is empty, needs to be renewed from the service (e.g. whenever the menu entry Channel>Update_categories is used). There's also a `catmap={}` dict in case category/genre titles have to be associated with service ids.
More importantly you need the `update_streams()` method to fetch station lists. It receives a `cat` parameter, for instance `"Pop"`. Then do whatever API query or website scraping (regex/pyquery) is necessary to populate a list.
Most plugins will return a list of dicts like:
{title: Radio123, url: http://pls, genre: Pop, playing: Song123}
The title is required, and the streaming URL of course. Other fields are mostly optional. (Received data gets stored internally in a `streams={}` dict.)
* Standard fields are: genre, title, url, playing, homepage, bitrate, listeners, favicon. Internal fields are: state, deleted, favourite.
* With a `datamap=[]` declaration custom field names could be displayed.
* Often you just want to rename the column titles however per `title=dict(listeners="Whatever")` in the class declaration.
There's also a `config=[]` list, in case your plugin needs to keep some settings. (For example an API key.)
The `has_search` class flag permits live server searches. If one is issued, the `update_streams()` method will be called with `cat=None` and `search="Find me maybe"` set instead.
* Other class options include `listformat="audio/x-scpls"` for declaring the station URL mime type (here `pls` for example).
* And `audioformat="audio/mpeg"` for the audio mime type.
* While `current=""` and `default="Pop"` can specify which category is visible per default, or currently active. (Both will be retired in later versions. More a clutch for current Gtk handling.)
* Other internal fields are listed in `channels/_generic.py`
Z 64b167ff4d4bc37a948575d5eccec471