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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.
+--]]
+
+-- Global variable SHOULD start with _
+_Global_Context={}
+
+--[[
+ This function is call during controller init phase as describe in onload-daemon-sample.json
+ It receives two argument 1st one is the source (here on load) second one is the arguments
+ as expose in config file.
+
+ In this sample we create an event that take the name of args["zzzz"], the resulting handle
+ is save into _Global_Context for further use.
+
+ Note: init functions are not call from a client and thus do not receive query
+
+--]]
+function _Audio_Controller_Init(source, control)
+
+ printf ("[--> Audio_Controller_Init -->] source=%d control=%s", source, Dump_Table(control))
+
+ -- create an event from configuration name
+ _Global_Context["event"]=AFB:evtmake(control["evtname"])
+
+ -- query HAL to retrieve sound card.
+ local err,result= AFB:servsync ("alsacore", "hallist", {})
+
+ if (err) then
+ AFB_ERROR("Fail to retrieve Audio HAL")
+ else
+ _Global_Context["registry"]=result["response"]
+ printf("[<-- Audio_Controller_Init <--] Active HAL=%s", Dump_Table(result["response"]))
+ end
+end