playlistduration.lua backup

-- playlistduration.lua -- VLC extension --
--[[
INSTALLATION:
Put the file in the VLC subdir /lua/extensions, by default:
* Windows (all users): %ProgramFiles%\VideoLAN\VLC\lua\extensions\
* Windows (current user): %APPDATA%\VLC\lua\extensions\
* Linux (all users): /usr/share/vlc/lua/extensions/
* Linux (current user): ~/.local/share/vlc/lua/extensions/
* Mac OS X (all users): /Applications/VLC.app/Contents/MacOS/share/lua/extensions/
(create directories if they don't exist)
Restart the VLC.
Then you simply use the extension by going to the "View" menu and selecting it.
--]]

function descriptor()
  return { title = "Playlist Duration" ;
    version = "1.0" ;
    author = "abremir" ;
    url = '';
    shortdesc = "Playlist Duration";
    description = "Get the playlist duration.\n"
      .. "Returns the total play time of the current playlist." ;
  }
end

function activate()
  vlc.msg.info("[playlist duration] start")
  playdur = vlc.dialog("Playlist Duration")
  playdur:add_label("", 1, 1, 11, 2)
  playdur:add_label("Total time:", 12, 1, 1, 2)
  durlabel=playdur:add_label(playlist_duration(), 13, 1, 1, 2)
  playdur:add_label("", 14, 1, 11, 2)
  playdur:add_button("Ok", close_dialog, 12, 3, 2, 1)
  playdur:show()
end

function deactivate()
  vlc.msg.info("[playlist duration] stop")
end

function close_dialog()
  vlc.deactivate()
end

function dur_to_time(duration)
  if duration>0 then
    local durationHour = math.floor(duration / 3600)
    local durationMinute = math.floor((duration % 3600) / 60)
    local durationSecond = math.floor(duration % 60)
    return durationHour, durationMinute, durationSecond
  else
    return 0, 0, 0
  end
end

function playlist_duration()
  local sum = 0
  local play_list = vlc.playlist.get("playlist",false)
  for k, item in pairs(play_list.children) do
    if item.duration ~= -1 then
      sum = sum + item.duration
    end
  end
  local h, m, s = dur_to_time(sum)
  return tostring(string.format("%02d:%02d:%02d", h, m, s))
end