Current File : //usr/share/grilo-plugins/grl-lua-factory/grl-musicbrainz-coverart.lua
--[[
* Copyright (C) 2014 Victor Toso.
*
* 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-musicbrainz-coverart",
name = "Musicbrainz Cover Art",
description = "a source for coverart",
supported_keys = { "thumbnail" },
supported_media = { 'audio', 'video' },
resolve_keys = {
["type"] = "audio",
required = { "mb-release-id" },
},
tags = { 'music', 'net:internet' },
}
netopts = {
user_agent = "Grilo Source Musicbrainz/0.3.8",
}
MUSICBRAINZ_DEFAULT_QUERY = "https://coverartarchive.org/%s/%s"
MUSICBRAINZ_RELEASES = {
{name = "release", id = "mb_release_id"},
{name = "release-group", id = "mb_release_group_id"}
}
---------------------------------
-- Handlers of Grilo functions --
---------------------------------
function grl_source_resolve()
req = grl.get_media_keys()
if not req then
grl.callback()
return
end
-- try to get the cover art associated with the mb_album_id
-- if it does not exist, try the mb_release_group_id one
-- if none of them exist, return nothing.
local urls = {}
for _, release in ipairs(MUSICBRAINZ_RELEASES) do
id = req[release.id]
if id and #id > 0 then
urls[#urls + 1] = string.format(MUSICBRAINZ_DEFAULT_QUERY, release.name, id)
end
end
grl.fetch(urls, netopts, fetch_results_cb)
end
---------------
-- Utilities --
---------------
function fetch_results_cb(results)
local json_results = nil
for index, feed in ipairs(results) do
local json = grl.lua.json.string_to_table (feed)
if json and json.images then
json_results = json.images
break
end
end
if not json_results then
grl.callback()
return
end
media = build_media(json_results)
grl.callback(media)
end
function build_media(results)
local media = {}
local res = {}
if results and #results > 0 then
local result = results[1]
-- force urls to https
res[1] = result.image and result.image:gsub("http://", "https://") or nil
if result.thumbnails then
for _, url in pairs(result.thumbnails) do
res[#res + 1] = url and url:gsub("http://", "https://") or nil
end
end
end
media.thumbnail = res
return media
end
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