share/media/spiegel.lua

   1 -- libquvi-scripts
   2 -- Copyright (C) 2010-2011,2013  Toni Gundogdu <legatvs@gmail.com>
   3 --
   4 -- This file is part of libquvi-scripts <http://quvi.sourceforge.net/>.
   5 --
   6 -- This program is free software: you can redistribute it and/or
   7 -- modify it under the terms of the GNU Affero General Public
   8 -- License as published by the Free Software Foundation, either
   9 -- version 3 of the License, or (at your option) any later version.
  10 --
  11 -- This program is distributed in the hope that it will be useful,
  12 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 -- GNU Affero General Public License for more details.
  15 --
  16 -- You should have received a copy of the GNU Affero General
  17 -- Public License along with this program.  If not, see
  18 -- <http://www.gnu.org/licenses/>.
  19 --
  20
  21 --
  22 -- NOTE: Some streams (e.g. 3gp) do not appear to be available (404) even
  23 --       if they are listed in the config XML.
  24 --
  25
  26 local Spiegel = {} -- Utility functions unique to this script
  27
  28 -- Identify the media script.
  29 function ident(qargs)
  30   return {
  31     can_parse_url = Spiegel.can_parse_url(qargs),
  32     domains = table.concat({'spiegel.de'}, ',')
  33   }
  34 end
  35
  36 -- Parse the media properties.
  37 function parse(qargs)
  38   local C = require 'quvi/const'
  39   local o = { [C.qoo_fetch_from_charset] = 'iso-8859-1' }
  40   local p = quvi.http.fetch(qargs.input_url, o).data
  41
  42   qargs.thumb_url = p:match('"og:image" content="(.-)"') or ''
  43
  44   qargs.title = p:match('"spVideoTitle">(.-)<') or ''
  45
  46   -- Make mandatory: needed to fetch the config XML
  47   qargs.id = qargs.input_url:match('/video/.-(%d+)%.html$')
  48                 or error('no match: media ID')
  49
  50   local t = {'http://video.spiegel.de/flash/', qargs.id, '.xml'}
  51   local c = quvi.http.fetch(table.concat(t,'')).data
  52
  53   local P = require 'lxp.lom'
  54   local x = P.parse(c)
  55
  56   qargs.streams = Spiegel.iter_streams(x)
  57
  58   qargs.duration_ms = qargs.streams[1].nostd.duration_ms
  59
  60   return qargs
  61 end
  62
  63 --
  64 -- Utility functions
  65 --
  66
  67 function Spiegel.can_parse_url(qargs)
  68   local U = require 'socket.url'
  69   local t = U.parse(qargs.input_url)
  70   if t and t.scheme and t.scheme:lower():match('^http$')
  71        and t.host   and t.host:lower():match('spiegel%.de$')
  72        and t.path   and t.path:lower():match('^/video/.-%d+%.html$')
  73   then
  74     return true
  75   else
  76     return false
  77   end
  78 end
  79
  80 function Spiegel.iter_streams(x)
  81   local S = require 'quvi/stream'
  82   local L = require 'quvi/lxph'
  83
  84   local r = {}
  85
  86   for i=1, #x do
  87     if x[i].tag and x[i].tag:match('type%d+') then
  88
  89       local n = L.find_first_tag(x[i], 'filename')[1]
  90       local u = 'http://video.spiegel.de/flash/'..n
  91       local t = S.stream_new(u)
  92
  93       t.video = {
  94         bitrate_kbit_s = tonumber(L.find_first_tag(x[i], 'totalbitrate')[1]),
  95         height = tonumber(L.find_first_tag(x[i], 'height')[1]),
  96         encoding = L.find_first_tag(x[i], 'codec')[1]:lower(),
  97         width = tonumber(L.find_first_tag(x[i], 'width')[1])
  98       }
  99
 100       -- Used by this script only. libquvi will ignore the 'nostd' values.
 101       t.nostd = {
 102         duration_ms = (tonumber(L.find_first_tag(x[i], 'duration')[1])*1000)
 103       }
 104
 105       t.container = (n:match('%.(%w+)$') or ''):lower()
 106       t.id = Spiegel.to_id(t)
 107
 108       table.insert(r,t)
 109     end
 110   end
 111
 112   if #r >1 then
 113     Spiegel.ch_best(S, r)
 114   end
 115
 116   return r
 117 end
 118
 119 function Spiegel.ch_best(S, t)
 120   local r = t[1]
 121   r.flags.best = true
 122   for _,v in pairs(t) do
 123     if v.video.height > r.video.height then
 124       r = S.swap_best(r, v)
 125     end
 126   end
 127 end
 128
 129 function Spiegel.to_id(t)
 130     return string.format('%s_%s_%sk_%sp',
 131         t.container, t.video.encoding, t.video.bitrate_kbit_s, t.video.height)
 132 end
 133
 134 -- vim: set ts=2 sw=2 tw=72 expandtab: