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diff --git a/conf.d/project/lua.d/softmixer-01.lua b/conf.d/project/lua.d/softmixer-01.lua
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+--[[
+ Copyright (C) 2016 "IoT.bzh"
+ Author Fulup Ar Foll <fulup@iot.bzh>
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+
+ NOTE: strict mode: every global variables should be prefixed by '_'
+--]]
+
+-- Static variables should be prefixed with _
+_EventHandle={}
+
+-- Call when AlsaCore return HAL active list
+function _AlsaPingCB_ (source, result, context)
+
+ AFB:notice (source, "--InLua-- PingCB: result='%s'", Dump_Table(result))
+
+end
+
+-- Display receive arguments and echo them to caller
+function _init_softmixer_ (source, args)
+
+ -- create event to push change audio roles to potential listeners
+ _EventHandle=AFB:evtmake(source, "control")
+
+ -- get list of supported HAL devices
+ AFB:service(source, "alsacore","ping", {}, "_AlsaPingCB_", {})
+
+ -- test Lua2C plugin
+ L2C:alsadmix(source, {})
+
+ AFB:notice (source, "--InLua-- _init_softmixer_ done")
+
+ return 0 -- happy end
+end