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A modern, network-enabled music player platform built on Rockbox technology. rockboxd.tsiry-sandratraina.com
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115--[[ Lua Timer functions/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright (C) 2017 William Wilgus * * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/]]
--[[ Exposed Functions
_timer.active _timer.check _timer.split _timer.start _timer.stop
]]
local _timer = {} do
--internal constants local _NIL = nil -- _NIL placeholder
-- newer versions of lua use table.unpack local unpack = unpack or table.unpack
--stores time elapsed at call to split; only vaid for unique timers local function split(index) if type(index) ~= "table" then return end index[#index + 1] = rb.current_tick() - _timer[index] end
-- starts a new timer, if index is not specified a unique index is returned -- numeric or string indices are valid to use directly for permanent timers -- in this case its up to you to make sure you keep the index unique local function start(index) if index == _NIL then ---if you have _timer.start create timer it returns a unique Id which -- then has the same methods of _timer :start :stop :check :split index = setmetatable({}, {__index = _timer}) end if _timer[index] == _NIL then _timer[index] = rb.current_tick() end return index end
-- returns time elapsed in centiseconds, assigning bCheckonly keeps timer active local function stop(index, bCheckonly)
local time_end = rb.current_tick() index = index or 0 if not _timer[index] then return 0 else local time_start = _timer[index] if not bCheckonly then _timer[index] = _NIL end -- destroy timer if type(index) ~= "table" then return time_end - time_start else return time_end - time_start, unpack(index) end end end
-- returns time elapsed in centiseconds, assigning to bUpdate.. updates timer local function check(index, bUpdate) local elapsed = stop(index, true) if bUpdate ~= _NIL and index then _timer[index] = rb.current_tick() end return elapsed end
-- returns table of active timers local function active() local t_active = {} local n = 0 for k,v in pairs(_timer) do if type(_timer[k]) ~= "function" then n = n + 1 t_active[n]=(k) end end return n, t_active end
-- expose functions to the outside through _timer table _timer.active = active _timer.check = check _timer.split = split _timer.start = start _timer.stop = stop
-- allows a call to _timer.start() by just calling _timer() _timer = setmetatable(_timer,{__call = function(t, i) return start(i) end})end -- timer functions
return _timer