share/lua/website/dailymotion.lua

   1
   2 -- libquvi-scripts
   3 -- Copyright (C) 2010-2012  Toni Gundogdu <legatvs@gmail.com>
   4 --
   5 -- This file is part of libquvi-scripts <http://quvi.sourceforge.net/>.
   6 --
   7 -- This library is free software; you can redistribute it and/or
   8 -- modify it under the terms of the GNU Lesser General Public
   9 -- License as published by the Free Software Foundation; either
  10 -- version 2.1 of the License, or (at your option) any later version.
  11 --
  12 -- This library is distributed in the hope that it will be useful,
  13 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 -- Lesser General Public License for more details.
  16 --
  17 -- You should have received a copy of the GNU Lesser General Public
  18 -- License along with this library; if not, write to the Free Software
  19 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20 -- 02110-1301  USA
  21 --
  22
  23 -- "http://dai.ly/cityofscars",
  24 -- "http://www.dailymotion.com/video/xdpig1_city-of-scars_shortfilms",
  25
  26 local Dailymotion = {} -- Utility functions unique to this script.
  27
  28 -- Identify the script.
  29 function ident(self)
  30     package.path = self.script_dir .. '/?.lua'
  31     local C      = require 'quvi/const'
  32     local r      = {}
  33     r.domain     = "dailymotion%.%w+"
  34     r.formats    = "default|best"
  35     r.categories = C.proto_http
  36     local U      = require 'quvi/util'
  37     r.handles    = U.handles(self.page_url, {r.domain, "dai.ly"},
  38                     {"/video/","/%w+$","/family_filter"})
  39     return r
  40 end
  41
  42 -- Query available formats.
  43 function query_formats(self)
  44     local U       = require 'quvi/util'
  45     local page    = Dailymotion.fetch_page(self, U)
  46     local formats = Dailymotion.iter_formats(page, U)
  47
  48     local t = {}
  49     for _,v in pairs(formats) do
  50         table.insert(t, Dailymotion.to_s(v))
  51     end
  52
  53     table.sort(t)
  54     self.formats = table.concat(t, "|")
  55
  56     return self
  57 end
  58
  59 -- Parse media URL.
  60 function parse(self)
  61     self.host_id = "dailymotion"
  62
  63     local U = require 'quvi/util'
  64     local p = Dailymotion.fetch_page(self, U)
  65
  66     self.title = p:match('"og:title" content="(.-)"')
  67                   or error("no match: media title")
  68
  69     self.id = p:match("video/([^%?_]+)")
  70                 or error("no match: media ID")
  71
  72     self.thumbnail_url = p:match('"og:image" content="(.-)"') or ''
  73
  74     local formats = Dailymotion.iter_formats(p, U)
  75     local format  = U.choose_format(self, formats,
  76                                      Dailymotion.choose_best,
  77                                      Dailymotion.choose_default,
  78                                      Dailymotion.to_s)
  79                         or error("unable to choose format")
  80     self.url      = {format.url or error("no match: media URL")}
  81     return self
  82 end
  83
  84 --
  85 -- Utility functions
  86 --
  87
  88 function Dailymotion.fetch_page(self, U)
  89     self.page_url = Dailymotion.normalize(self.page_url)
  90
  91     local s = self.page_url:match('[%?%&]urlback=(.+)')
  92     if s then
  93         self.page_url = 'http://dailymotion.com' .. U.unescape(s)
  94     end
  95
  96     local opts = {arbitrary_cookie = 'family_filter=off'}
  97     return quvi.fetch(self.page_url, opts)
  98 end
  99
 100 function Dailymotion.normalize(page_url) -- "Normalize" embedded URLs
 101     if page_url:match("/swf/") then
 102         page_url = page_url:gsub("/swf/", "/")
 103     elseif page_url:match("/embed/") then
 104         page_url = page_url:gsub("/embed/", "/")
 105     end
 106     return page_url
 107 end
 108
 109 function Dailymotion.iter_formats(page, U)
 110     local seq = page:match('"sequence":"(.-)"')
 111                   or error('no match: sequence')
 112     if not seq then
 113         local e = "no match: sequence"
 114         if page:match("_partnerplayer") then
 115             e = e .. ": looks like a partner video which we do not support"
 116         end
 117         error(e)
 118     end
 119
 120     seq = U.unescape(seq)
 121
 122     local t = {}
 123     for url in seq:gmatch('%w+URL":"(.-)"') do
 124         local c,w,h,cn = url:match('(%w+)%-(%d+)x(%d+).-%.(%w+)')
 125         if c then
 126             url = url:gsub('cell=secure%-vod&', '') -- http://is.gd/BzYPZJ
 127             table.insert(t, {width=tonumber(w), height=tonumber(h),
 128                              container=cn,      codec=string.lower(c),
 129                              url=url:gsub("\\/", "/")})
 130 --            print(c,w,h,cn)
 131         end
 132     end
 133
 134     if #t == 0 then
 135         error("no match: media URL")
 136     end
 137
 138     return t
 139 end
 140
 141 function Dailymotion.choose_default(formats) -- Lowest quality available
 142     local r = {width=0xffff, height=0xffff, url=nil}
 143     local U = require 'quvi/util'
 144     for _,v in pairs(formats) do
 145         if U.is_lower_quality(v,r) then
 146             r = v
 147         end
 148     end
 149 --    for k,v in pairs(r) do print(k,v) end
 150     return r
 151 end
 152
 153 function Dailymotion.choose_best(formats) -- Highest quality available
 154     local r = {width=0, height=0, url=nil}
 155     local U = require 'quvi/util'
 156     for _,v in pairs(formats) do
 157         if U.is_higher_quality(v,r) then
 158             r = v
 159         end
 160     end
 161 --    for k,v in pairs(r) do print(k,v) end
 162     return r
 163 end
 164
 165 function Dailymotion.to_s(t)
 166     return string.format("%s_%sp", t.container, t.height)
 167 end
 168
 169 -- vim: set ts=4 sw=4 tw=72 expandtab: