share/media/dailymotion.lua

   1 -- libquvi-scripts
   2 -- Copyright (C) 2010-2012  Toni Gundogdu <legatvs@gmail.com>
   3 --
   4 -- This file is part of libquvi-scripts <http://quvi.sourceforge.net/>.
   5 --
   6 -- This library is free software; you can redistribute it and/or
   7 -- modify it under the terms of the GNU Lesser General Public
   8 -- License as published by the Free Software Foundation; either
   9 -- version 2.1 of the License, or (at your option) any later version.
  10 --
  11 -- This library 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 GNU
  14 -- Lesser General Public License for more details.
  15 --
  16 -- You should have received a copy of the GNU Lesser General Public
  17 -- License along with this library; if not, write to the Free Software
  18 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 -- 02110-1301  USA
  20 --
  21
  22 -- "http://dai.ly/cityofscars",
  23 -- "http://www.dailymotion.com/video/xdpig1_city-of-scars_shortfilms",
  24
  25 local Dailymotion = {} -- Utility functions unique to this script.
  26
  27 -- Identify the media script.
  28 function ident(qargs)
  29   local A = require 'quvi/accepts'
  30   local d = {"dailymotion%.%w+", "dai.ly"} -- domains
  31   local p = {"/video/", "/%w+$", "/family_filter"} -- paths
  32   local r = {
  33     accepts = A.accepts(qargs.input_url, d, p)
  34   }
  35   return r
  36 end
  37
  38 -- Parse media properties.
  39 function parse(qargs)
  40   local U = require 'quvi/util'
  41   local p = Dailymotion.fetch_page(qargs, U)
  42
  43   qargs.thumb_url = p:match('"og:image" content="(.-)"') or ''
  44   qargs.title = p:match('title="(.-)"') or ''
  45   qargs.id = p:match("video/([^%?_]+)") or ''
  46
  47   qargs.streams = Dailymotion.iter_streams(p, U)
  48
  49   return qargs
  50 end
  51
  52 --
  53 -- Utility functions
  54 --
  55
  56 -- "Normalizes" the embedded URLs.
  57 function Dailymotion.normalize(input_url)
  58   if input_url:match("/swf/") then
  59     input_url = input_url:gsub("/swf/", "/")
  60   elseif input_url:match("/embed/") then
  61     input_url = input_url:gsub("/embed/", "/")
  62   end
  63   return input_url
  64 end
  65
  66 -- Fetches the page contents from the media URL.
  67 function Dailymotion.fetch_page(qargs, U)
  68   qargs.input_url = Dailymotion.normalize(qargs.input_url)
  69
  70   local s = qargs.input_url:match('[%?%&]urlback=(.+)')
  71   if s then
  72     qargs.input_url = 'http://dailymotion.com' .. U.unescape(s)
  73   end
  74
  75   local C = require 'quvi/const'
  76   local o = { [C.qfo_cookie] = 'family_filter=off' }
  77   return quvi.fetch(qargs.input_url, o)
  78 end
  79
  80 -- Iterates the available streams.
  81 function Dailymotion.iter_streams(page, U)
  82
  83   local seq = page:match('"sequence":"(.-)"')
  84                 or error('no match: sequence')
  85   seq = U.unescape(seq)
  86
  87   local urls = {}
  88   for q,u in seq:gmatch('"(%w%w)URL":"(.-)"') do
  89     table.insert(urls, {quality=q, url=Dailymotion.cleanup(U, u)})
  90   end
  91
  92   -- Each media page should have at least have this, even if other
  93   -- stream qualities are not available.
  94   if #urls ==0 then
  95     local u = seq:match('"video_url":"(.-)"')
  96                 or error('no match: media stream URL')
  97     table.insert(urls, {url=Dailymotion.cleanup(U, u)})
  98   end
  99
 100   local S = require 'quvi/stream'
 101   local r = {}
 102
 103   for _,v in pairs(urls) do
 104     local c,w,h,cn = v.url:match('(%w+)%-(%d+)x(%d+).-%.(%w+)')
 105
 106     if c then
 107       local t = S.stream_new(v.url)
 108
 109       t.video.encoding = string.lower(c or '')
 110       t.video.height = tonumber(h)
 111       t.video.width = tonumber(w)
 112       t.container = cn or ''
 113
 114       -- Must come after we have the video resolution, as the to_id
 115       -- function uses the height property.
 116       t.id = Dailymotion.to_id(t, v.quality)
 117
 118       table.insert(r, t)
 119     end
 120   end
 121
 122   if #r >1 then
 123     Dailymotion.ch_best(S, r)
 124   end
 125
 126   return r
 127 end
 128
 129 -- Sanitizes the URL.
 130 function Dailymotion.cleanup(U, u)
 131   u = U.unescape(u)
 132   u = U.slash_unescape(u)
 133   u = u:gsub('cell=secure%-vod&', '') -- http://is.gd/BzYPZJ
 134   return u
 135 end
 136
 137 -- Picks the stream with the highest video height property
 138 -- as the best in quality.
 139 function Dailymotion.ch_best(S, t)
 140   local r = t[1] -- Make the first one the 'best' by default.
 141   r.flags.best = true
 142   for _,v in pairs(t) do
 143     if v.video.height > r.video.height then
 144       r = S.swap_best(r, v)
 145     end
 146   end
 147 end
 148
 149 -- Return an ID for a stream.
 150 function Dailymotion.to_id(t, q)
 151   return string.format("%s_%s_%s_%sp",
 152     (q) and q or 'sd', t.container, t.video.encoding, t.video.height)
 153 end
 154
 155 -- vim: set ts=2 sw=2 tw=72 expandtab: