Current File : //usr/share/grilo-plugins/grl-lua-factory/grl-lastfm-cover.lua
--[[
* Copyright (C) 2015 Bastien Nocera.
*
* Contact: Bastien Nocera <hadess@hadess.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
--]]
---------------------------
-- Source initialization --
---------------------------
source = {
id = "grl-lastfm-cover",
name = "Last.fm Cover",
description = "a source for music covers",
goa_account_provider = 'lastfm',
goa_account_feature = 'music',
supported_keys = { 'thumbnail' },
supported_media = { 'audio' },
resolve_keys = {
["type"] = "audio",
required = { "artist", "album" },
},
tags = { 'music', 'net:internet' },
}
------------------
-- Source utils --
------------------
LASTFM_SEARCH_ALBUM = 'https://ws.audioscrobbler.com/2.0/?method=album.getInfo&api_key=%s&artist=%s&album=%s'
---------------------------------
-- Handlers of Grilo functions --
---------------------------------
function grl_source_resolve()
local url, req
local artist, title
req = grl.get_media_keys()
if not req or not req.artist or not req.album
or #req.artist == 0 or #req.album == 0 then
grl.callback()
return
end
-- Prepare artist and title strings to the url
artist = grl.encode(req.artist)
album = grl.encode(req.album)
url = string.format(LASTFM_SEARCH_ALBUM, grl.goa_consumer_key(), artist, album)
grl.fetch(url, fetch_page_cb)
end
---------------
-- Utilities --
---------------
function fetch_page_cb(result)
if not result then
grl.callback()
return
end
local media = {}
media.thumbnail = {}
local image_sizes = { "mega", "extralarge", "large", "medium", "small" }
for _, size in pairs(image_sizes) do
local url
url = string.match(result, '<image size="' .. size .. '">(.-)</image>')
if url ~= nil and url ~= '' then
grl.debug ('Image size ' .. size .. ' = ' .. url)
table.insert(media.thumbnail, url)
end
end
if #media.thumbnail == 0 then
grl.callback()
else
grl.callback(media, 0)
end
end
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