lua demuxer for megavideo.com

share/luaplaylist/megavideo.lua

+--[[
+    Translate MegaVideo video webpages URLs to the corresponding FLV URL.
+
+ $Id$
+
+ Copyright © 2008 the VideoLAN team
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+--]]
+
+-- Probe function.
+function probe()
+    return vlc.access == "http"
+        and string.match( vlc.path, "megavideo.com" ) 
+end
+
+-- Parse function.
+function parse()
+
+    -- we have to get the xml
+    if string.match( vlc.path, "www.megavideo.com.*&v=.*&u=.*" ) then
+        id = string.gsub( vlc.path, "www.megavideo.com.*v=([^&]*).*$", "%1" )
+        path = "http://www.megavideo.com/xml/videolink.php?v=" .. id
+        return { { path = path } }
+    end
+
+    while true
+    do 
+        line = vlc.readline()
+        if not line then break end
+
+        -- we got the xml
+        if string.match( line, "<ROWS><ROW url=\"" )
+        then
+            xml = ""
+            while line do
+                -- buffer the full xml
+                xml = xml .. line
+                line = vlc.readline()
+            end
+            -- now gets the encoded url
+            s = string.gsub( xml, ".*ROW url=\"([^\"]*).*", "%1" )
+            path = ""
+            i = 1
+            while s:byte(i) do
+                c = s:byte(i)
+                if c % 4 < 2 then
+                    if c < 16 and c > 3 then key = 61
+                    elseif c < 96 and c > 67 then key = 189
+                    elseif c < 20 and c > 6 then key = 65
+                    else vlc.msg_err("Oops, please report URL to developers")
+                    end
+                else
+                    if c < 16 and c > 3 then key = 65
+                    elseif c < 96 and c > 67 then key = 193
+                    elseif c < 20 and c > 6 then key = 65
+                    else vlc.msg_err("Oops, please report URL to developers")
+                    end
+                end
+                i = i + 1
+                path = path .. string.char(key - c)
+            end
+        end
+        if path then break end
+    end
+    print( path )
+    if path then
+        return { { path = path } }
+    else
+        return { }
+    end
+end