On going effort, now load and support LUA+C plugin

24 files changed, 1357 insertions, 90 deletions

diff --git a/README.md b/README.md
index 8be313d..6239afd 100644
--- a/README.md
+++ b/README.md
@@ -1,61 +1,349 @@
-# Controller Utilities
+Softmixer controller for 4A (AGL Advance Audio Architecture).
+------------------------------------------------------------
 
-* Object: Generic Controller Utilities to handle Policy, Small Business Logic, Glue in between components, ...
-* Status: Release Candidate
-* Author: Fulup Ar Foll fulup@iot.bzh
-* Date  : October-2017
+ * Object: Simulate a hardware mixer through and Alsa-Loop driver and a user space mixer
+ * Status: In Progress
+ * Author: Fulup Ar Foll fulup@iot.bzh
+ * Date  : April-2018
 
-## Usage
+## Functionalities:
+ - Create an application dedicate controller from a JSON config file
+ - Each controls (eg: navigation, multimedia, ...) is a suite of actions. When all actions succeed control is granted, if one fail control acces is denied.
+ - Actions can either be:
+   + Invocation to an other binding API, either internal or external (eg: a policy service, Alsa UCM, ...)
+   + C routines from a user provider plugin (eg: policy routine, proprietary code, ...)
+   + Lua script function. Lua provides access to every AGL appfw functionalities and can be extended from C user provided plugins.
 
-0) Dependencies
+## Installation
+ - Controler is a native part of AGL Advance Audio Framework but may be used independently with any other service or application binder.
+ - Dependencies: the only dependencies are audio-common for JSON-WRAP and Filescan-utils capabilities.
+ - Controler relies on Lua-5.3, when not needed Lua might be removed at compilation time.
 
-* AGL Application Framework
+## Monitoring
+ - Default test HTML page expect monitoring HTML page to be accessible from /monitoring for this to work you should
+ * place monitoring HTML pages in a well known location eg: $HOME/opt/monitoring
+ * start your binder with the alias option e.g. afb-daemon --port=1234 --alias=/monitoring:/home/fulup/opt/afb-monitoring --ldpaths=. --workdir=. --roothttp=../htdocs
 
-1) Clone & build from source (temporally from github)
+## Config
 
-```bash
-git clone --recursive https://github.com/iotbzh/4a-softmixer
-cd build
-cmake ..
-make
-```
+Configuration is loaded dynamically during startup time. The controller scans CONTROL_CONFIG_PATH for a file corresponding to pattern
+"onload-bindername-xxxxx.json". When controller runs within AAAA binder it searches for "onload-audio-xxxx.json". First file found in the path the loaded
+any other files corresponding to the same pather are ignored and only generate a warning.
 
-2) Activate ALSA loop driver
+Each bloc in the configuration file are defined with
+ * label: must be provided is used either for debugging or as input for the action (eg: signal name, control name, ...)
+ * info:  optional used for documentation purpose only
 
-```modprobe snd-aloop enable=1,1 index=4,5 id=loopback,softmix
-```
+Note by default controller config search path is defined at compilation time, but path might be overloaded with CONTROL_CONFIG_PATH
+environment variable. Setenv 'CONTROL_ONLOAD_PROFILE'=xxxx to overload 'onload-default-profile' initialisation sequence.
 
-3) Declare your controller config section in your binding
+### Config is organised in 4 sections:
 
-```C
-// CtlSectionT syntax:
-// key: "section name in config file"
-// loadCB: callback to process section
-// handle: a void* pass to callback when processing section
-static CtlSectionT ctlSections[]= {
-    {.key="plugins" , .loadCB= PluginConfig, .handle= &halCallbacks},
-    {.key="onload"  , .loadCB= OnloadConfig},
-    {.key="halmap"  , .loadCB= MapConfigLoad},
-    {.key=NULL}
-};
+ * metadata
+ * onload defines the set of action to be executed at startup time
+ * control defines the set of controls with corresponding actions
+ * event define the set of actions to be executed when receiving a given signal
 
-```
+### Metadata
+
+As today matadata is only used for documentation purpose.
+ * label + version mandatory
+ * info optional
+
+### OnLoad section
+
+Defines startup time configuration. Onload may provide multiple initialisation profiles, each with a different label.
+ * label is mandatory. Label is used to select onload profile at initialisation through DispatchOneOnLoad("onload-label") API;
+ * info is optional
+ * plugin provides optional unique plugin name. Plugin should follow "onload-bindername-xxxxx.ctlso" patern
+   and are search into CONTROL_PLUGIN_PATH. When defined controller will execute user provided function context=CTLP_ONLOAD(label,version,info).
+   The context returned by this routine is provided back to any C routines call later by the controller. Note that Lua2C function
+   are prefix in Lua script with plugin label (eg: MyPlug: in following config sample)
+ * lua2c list of Lua commands shipped with provided plugin.
+ * require list of binding that should be initialised before the controller starts. Note that some listed requirer binding might be absent,
+   nevertheless any present binding from this list will be started before controller binding, missing ones generate a warning.
+ * action the list of action to execute during loadtime. Any failure in action will prevent controller binding from starting.
+
+### Control section
+
+Defines a list of controls that are accessible through (api="control", verb="request", control="control-label").
+
+ * label mandatory
+ * info optional
+ * permissions Cynara needed privileges to request this control (same as AppFw-V2)
+ * action the list of actions
+
+### Event section
+
+Defines a list of actions to be executed on event reception. Even can do anything a controller can (change state,
+send back signal, ...) eg: if a controller subscribes to vehicule speed, then speed-event may ajust master-volume to speed.
+
+ * label mandatory
+ * info optional
+ * action the list of actions
+
+### Actions Categories
+
+Controler support tree categories of actions. Each action return a status status where 0=success and 1=failure.
+ * AppFw API, Provides a generic model to request other bindings. Requested binding can be local (eg: ALSA/UCM) or
+   external (eg: vehicle signalling).
+    * api  provides requested binding API name
+    * verb provides verb to requested binding
+    * args optionally provides a jsonc object for targeted binding API. Note that 'args' are statically defined
+       in JSON configuration file. Controler client may also provided its own arguments from the query list. Targeted
+       binding receives both arguments defined in the config file and the argument provided by controller client.
+ * C-API, when defined in the onload section, the plugin may provided C native API with CTLP-CAPI(apiname, label, args, query, context).
+   Plugin may also create Lua command with  CTLP-Lua2C(LuaFuncName, label, args, query, context). Where args+query are JSONC object
+   and context the value return from CTLP_ONLOAD function. Any missing value is set to NULL.
+ * Lua-API, when compiled with Lua option, the controller support action defined directly in Lua script. During "onload" phase the
+   controller search in CONTROL_Lua_PATH file with pattern "onload-bindername-xxxx.lua". Any file corresponding to this pattern
+   is automatically loaded. Any function defined in those Lua script can be called through a controller action. Lua functions receive
+   three parameters (label, args, query).
+
+Note: Lua added functions systematically prefix. AGL standard AppFw functions are prefixed with AGL: (eg: AGL:notice(), AGL_success(), ...).
+User Lua functions added though the plugin and CTLP_Lua2C are prefix with plugin label (eg: MyPlug:HelloWorld1).
+
+### Avaliable Application Framework Commands
+
+Each Lua AppFw commands should be prefixed by AFB:
+
+ * AFB:notice ("format", arg1,... argn) LUA table are print directly as json string with '%s'.
+   AFB:error, AFB:warning, AFB:info, AFB:debug work on the same model. Printed message are limited to 512 characters.
+
+ * AFB:service ('API', 'VERB', {query}, "Lua_Callback_Name", {context}) asynchronous call to an other binding. When empty query/context should be set to '{}'
+   and not to 'nil'. When 'nil' Lua does not send 'NULL' value but remove arguments to calling stack. WARNING:"Callback"
+   is the name of the callback as a string and not a pointer to the callback. (If someone as a solution to fix this, please
+   let me known). Callback is call as LUA "function Alsa_Get_Hal_CB (error, result, context)" where:
+   * error is a Boolean
+   * result is the full answer from AppFw (do not forget to extract response)
+   * context is a copy of the Lua table pas as argument (warning it's a copy not a pointer to original table)
+
+ * error,result=AFB:servsync('API', 'VERB', {query}) Save as previous but for synchronous call. Note that Lua accept multiple
+   return. AFB:servsync return both the error message and the response as a Lua table. Like for AFB:service user should not
+   forget to extract response from result.
+
+ * AFB:success(request, response) request is the opaque handle pass when Lua is called from (api="control", verb="docall").
+   Response is a Lua table that will be return to client.
 
-3) Do controller config parsing at binding pre-init
+ * AFB:fail(request, response) same as for success. Note that LUA generate automatically the error code from Lua function name.
+   The response is tranformed to a json string before being return to client.
 
-```C
-   // check if config file exist
-    const char *dirList= getenv("CTL_CONFIG_PATH");
-    if (!dirList) dirList=CONTROL_CONFIG_PATH;
+ * EventHandle=AFB:evtmake("MyEventName") Create an event and return the handle as an opaque handle. Note that due to a limitation
+   of json_object this opaque handle cannot be passed as argument in a callback context.
 
-    ctlConfig = CtlConfigLoad(dirList, ctlSections);
-    if (!ctlConfig) goto OnErrorExit;
+ * AFB:subscribe(request, MyEventHandle) Subscribe a given client to previously created event.
+
+ * AFB:evtpush (MyEventHandle, MyEventData) Push an event to every subscribed client. MyEventData is a Lua table that will be
+   send as a json object to corresponding clients.
+
+ * timerHandle=AFB:timerset (MyTimer, "Timer_Test_CB", context) Initialise a timer from MyTimer Lua table. This table should contend 3 elements:
+   MyTimer={[l"abel"]="MyTimerName", ["delay"]=timeoutInMs, ["count"]=nBOfCycles}. Note that is count==0 then timer is cycle
+   infinitively. Context is a standard Lua table. This function return an opaque handle to be use to further control the timer.
+
+ * AFB:timerclear(timerHandle) Kill an existing timer. Return an error when timer does not exit.
+
+ * MyTimer=AFB:timerget(timerHandle) Return Label, Delay and Count of an active timer. Return an error when timerHandle does not
+   point on an active timer.
+
+Note: Except for function call during binding initialisation period. Lua call are protected and should return clean message
+  even when improperly used. If you find bug please report.
+
+### Adding Lua command from User Plugin
+
+User Plugin is optional and may provide either native C-action accessible directly from controller actions as defined in
+JSON config file, or alternatively may provide at set of Lua commands usable inside any script (onload, control,event). A simple
+plugin that provide both natice C API and Lua commands is provided as example (see ctl-plugin-sample.c). Technically a
+plugin is a simple sharelibrary and any code fitting in sharelib might be used as a plugin. Developer should nevertheless
+not forget that except when no-concurrency flag was at binding construction time, any binding should to be thread safe.
+
+A plugin must be declare with CTLP_REGISTER("MyCtlSamplePlugin"). This entry point defines a special structure that is check
+at plugin load time by the controller. Then you have an optional init routine declare with CTLP_ONLOAD(label, version, info).
+This init routine receives controller onload profile as selected by DispatchOnLoad("profile"). The init routine may create
+a plugin context that is later one presented to every plugin API this for both LUA and native C ones. Then each:
+
+ * C API declare with CTLP_CAPI (MyCFunction, label, argsJ, queryJ, context) {your code}. Where:
+     * MyFunction is your function
+     * Label is a string containing the name of your function
+     * ArgsJ a json_object containing the argument attach the this control in JSON config file.
+     * context your C context as return from  CTLP_ONLOAD
+
+ * Lua API declarewith TLP_LUA2C (MyLuaCFunction, label, argsJ, context) {your code}. Where
+     * MyLuaCFunction is both the name of your C function and Lua command
+     * Label your function name as a string
+     * Args the arguments passed this time from Lua script and not from Json config file.
+     * Query is not provided as LuaC function are called from a script and not directly from controller action list.
+
+Warning: Lua samples use with controller enforce strict mode. As a result every variables should be declare either as
+local or as global. Unfortunately "luac" is not smart enough to handle strict mode at build time and errors only appear
+at run time. Because of this strict mode every global variables (which include functions) should be prefix by '_'.
+Note that LUA require an initialisation value for every variables and declaring something like "local myvar" wont
+allocate "myvar"
+
+### Debugging Facilities
+
+Controler Lua script are check for syntax from CMAKE template with Luac. When needed to go further an developer API allow to
+execute directly Lua command within controller context from Rest/Ws (api=control, verb=lua_doscript). DoScript API takes two
+other optional arguments func=xxxx where xxxx is the function to execute within Lua script and args a JSON object to provide
+input parameter. When funcname is not given by default the controller try to execute middle filename doscript-xxxx-????.lua.
+
+When executed from controller Lua script may use any AppFw Apis as well as any L2C user defined commands in plugin.
+
+### Running as Standalone Controller
+
+Controller is a standard binding and can then be started independently of AAAA. When started with from build repository with
 ```
+afb-daemon --port=1234 --workdir=. --roothttp=../htdocs --tracereq=common --token= --verbose --binding=./Controller-afb/afb-control-afb.so
+```
+
+Afb-Daemon only load controller bindings without search for the other binding. In this case the name of the process is not change
+to afb-audio and controller binding will search for a configuration file name 'onload-daemon-xxx.json'. This model can be used
+to implement for testing purpose or simply to act as the glue in between a UI and other binder/services.
+
+## Config Sample
 
-4) Exec controller config during binding init
+Here after a simple configuration sample.
+
+```
+{
+    "$schema": "ToBeDone",
+    "metadata": {
+        "label": "sample-audio-control",
+        "info": "Provide Default Audio Policy for Multimedia, Navigation and Emergency",
+        "version": "1.0"
+    },
+    "onload": [{
+            "label": "onload-default",
+            "info": "onload initialisation config",
+                        "plugin": {
+                "label" : "MyPlug",
+                "sharelib": "ctl-audio-plugin-sample.ctlso",
+                "lua2c": ["Lua2cHelloWorld1", "Lua2cHelloWorld2"]
+            },
+            "require": ["intel-hda", "jabra-usb", "scarlett-usb"],
+            "actions": [
+                {
+                    "label": "onload-sample-cb",
+                    "info": "Call control sharelib install entrypoint",
+                    "callback": "SamplePolicyInit",
+                    "args": {
+                        "arg1": "first_arg",
+                        "nextarg": "second arg value"
+                    }
+                }, {
+                    "label": "onload-sample-api",
+                    "info": "Assert AlsaCore Presence",
+                    "api": "alsacore",
+                    "verb": "ping",
+                    "args": "test"
+                }, {
+                    "label": "onload-hal-lua",
+                    "info": "Load avaliable HALs",
+                    "lua": "Audio_Init_Hal"
+                }
+            ]
+        }],
+    "controls":
+            [
+                {
+                    "label": "multimedia",
+                    "permissions": "urn:AGL:permission:audio:public:mutimedia",
+                    "actions": {
+                            "label": "multimedia-control-lua",
+                            "info": "Call Lua Script function Test_Lua_Engin",
+                            "lua": "Audio_Set_Multimedia"
+                        }
+                }, {
+                    "label": "navigation",
+                    "permissions": "urn:AGL:permission:audio:public:navigation",
+                    "actions": {
+                            "label": "navigation-control-lua",
+                            "info": "Call Lua Script to set Navigation",
+                            "lua": "Audio_Set_Navigation"
+                        }
+                }, {
+                    "label": "emergency",
+                    "permissions": "urn:AGL:permission:audio:public:emergency",
+                    "actions": {
+                            "label": "emergency-control-ucm",
+                            "lua": "Audio_Set_Emergency"
+                        }
+                }, {
+                    "label": "multi-step-sample",
+                    "info" : "all actions must succeed for control to be accepted",
+                    "actions": [{
+                            "label": "multimedia-control-cb",
+                            "info": "Call Sharelib Sample Callback",
+                            "callback": "sampleControlNavigation",
+                            "args": {
+                                "arg1": "snoopy",
+                                "arg2": "toto"
+                            }
+                        }, {
+                            "label": "navigation-control-ucm",
+                            "api": "alsacore",
+                            "verb": "ping",
+                            "args": {
+                                "test": "navigation"
+                            }
+                        }, {
+                            "label": "navigation-control-lua",
+                            "info": "Call Lua Script to set Navigation",
+                            "lua": "Audio_Set_Navigation"
+                        }]
+                }
+            ],
+    "events":
+            [
+                {
+                    "label": "Vehicle-Speed",
+                    "info": "Action when Vehicule speed change",
+                    "actions": [
+                        {
+                            "label": "speed-action-1",
+                            "callback": "Blink-when-over-130",
+                            "args": {
+                                "speed": 130
+                                "blink-speed": 1000
+                            }
+                        }, {
+                            "label": "Adjust-Volume",
+                            "lua": "Adjust_Volume_To_Speed",
+                        }
+                    ]
+                },
+                {
+                    "label": "Reverse-Engage",
+                    "info": "When Reverse Gear is Engage",
+                    "actions": [
+                        {
+                            "label": "Display-Rear-Camera",
+                            "callback": "Display-Rear-Camera",
+                        }, {
+                            "label": "Prevent-Phone-Call",
+                            "api"  : "phone",
+                            "verb" : "status",
+                            "args": {
+                                "call-accepted": false
+                            }
+                        }
+                    ]
+                },
+                {
+                    "label": "Neutral-Engage",
+                    "info": "When Reverse Neutral is Engage",
+                    "actions": [
+                        {
+                            "label": "Authorize-Video",
+                            "api"  : "video",
+                            "verb" : "status",
+                            "args": {
+                                "tv-accepted": true
+                            }
+                        }
+                    ]
+                }
+            ]
+}
 
-```C
-  int err = CtlConfigExec (ctlConfig);
 ```
 
-For sample usage look at https://gerrit.automotivelinux.org/gerrit/gitweb?p=apps/app-controller-submodule.git
diff --git a/conf.d/cmake/config.cmake b/conf.d/cmake/config.cmake
index b1bfa96..a8bce3d 100644
--- a/conf.d/cmake/config.cmake
+++ b/conf.d/cmake/config.cmake
@@ -18,7 +18,7 @@
 
 # Project Info
 # ------------------
-set(PROJECT_NAME 4a-softmixer-afbd)
+set(PROJECT_NAME 4a-softmixer)
 set(PROJECT_PRETTY_NAME "Audio SoftMixer")
 set(PROJECT_DESCRIPTION "Soft Mixer for 4A (AGL Advanced Audio Architecture)")
 set(PROJECT_URL "https://github.com/iotbzh/4a-softmixer")
@@ -73,6 +73,7 @@ set (PKG_REQUIRED_LIST
 	afb-daemon>=4.0
 	libmicrohttpd>=0.9.55
 	uuid
+        alsa>=1.1.2
 )
 
 # Prefix path where will be installed the files
@@ -130,7 +131,7 @@ list(APPEND link_libraries afb-helpers)
 set(CONTROL_SUPPORT_LUA 1)
 add_definitions(-DCONTROL_PLUGIN_PATH="${CMAKE_INSTALL_PREFIX}/${PROJECT_NAME}/lib/plugins:${CMAKE_BINARY_DIR}/package/lib/plugins")
 add_definitions(-DCONTROL_CONFIG_PATH="${CMAKE_INSTALL_PREFIX}/${PROJECT_NAME}/etc:${CMAKE_BINARY_DIR}/package/etc")
-add_definitions(-DCONTROL_LUA_PATH="${CMAKE_INSTALL_PREFIX}/${PROJECT_NAME}/data:${CMAKE_BINARY_DIR}/package/data")
+add_definitions(-DCONTROL_LUA_PATH="${CMAKE_INSTALL_PREFIX}/${PROJECT_NAME}/data:${CMAKE_SOURCE_DIR}/conf.d/project/lua.d")
 add_definitions(-DCTL_PLUGIN_MAGIC=987456123)
 add_definitions(-DUSE_API_DYN=1 -DAFB_BINDING_VERSION=dyn)
 
@@ -197,7 +198,7 @@ set(AFB_REMPORT "1234" CACHE PATH "Default binder listening port")
 
 # Print a helper message when every thing is finished
 # ----------------------------------------------------
-set(CLOSING_MESSAGE "Typical binding launch: afb-daemon --name afbd-${PROJECT_NAME} --port=${AFB_REMPORT} --workdir=${CMAKE_BINARY_DIR}/. --ldpath=package/lib --roothttp=package  --token=\"${AFB_TOKEN}\" --tracereq=common --verbose")
+set(CLOSING_MESSAGE "Typical binding launch: afb-daemon --name ${PROJECT_NAME}-afbd --port=${AFB_REMPORT} --workdir=${CMAKE_BINARY_DIR} --binding=package/lib/softmixer-binding.so --ldpath=${CMAKE_INSTALL_PREFIX}/4a-alsa-core/lib --roothttp=package/htdocs --token=\"${AFB_TOKEN}\" --tracereq=common --verbose")
 set(PACKAGE_MESSAGE "Install widget file using in the target : afm-util install ${PROJECT_NAME}.wgt")
 
 # Optional schema validator about now only XML, LUA and JSON
diff --git a/conf.d/project/etc/4a-softmixer-config.json b/conf.d/project/etc/4a-softmixer-config.json
index 9d89f07..db13705 100644
--- a/conf.d/project/etc/4a-softmixer-config.json
+++ b/conf.d/project/etc/4a-softmixer-config.json
@@ -3,18 +3,27 @@
     "metadata": {
         "uid": "Soft Mixer",
         "version": "1.0",
-        "api": "soft-mixer",
+        "api": "softmixer",
         "info": "Soft Mixer emulating hardware mixer",
-        "require": ["alsa-core"]
+        "require": ["alsacore"]
     },
     "plugins": [
         {
             "uid": "alsa-router",
             "ldpath": "package/lib/plugins",
+            "lua2c": ["AlsaDmix", "AlsaRouter"],
             "info": "Map alsa-loop subdevices to 4A HAL streams"
         }
     ],
 
+    "onload": [
+        {
+            "uid": "init-soft-mixer",
+            "info": "Initialise Audio Router",
+            "lua": "_init_softmixer_"
+        }
+    ],
+
     "sndcards": [
         {
             "uid": "Focusrite_Scarlett_18i8",
@@ -72,11 +81,17 @@
     "controls": [
         {
             "uid": "stream",
-            "function": "plugin://alsa-router/stream_ctl"
+            "callback": {
+                "plugin": "alsa-router",
+                "function": "stream_ctl"
+            }
         },
         {
             "uid": "zone",
-            "function": "plugin://alsa-router/zone_ctl"
+            "callback": {
+                "plugin": "alsa-router",
+                "function": "zone_ctl"
+            }
         }
     ]
 }
diff --git a/conf.d/project/etc/CMakeLists.txt b/conf.d/project/etc/CMakeLists.txt
index 378effc..2e7daa7 100644
--- a/conf.d/project/etc/CMakeLists.txt
+++ b/conf.d/project/etc/CMakeLists.txt
@@ -19,7 +19,7 @@
 ##################################################
 # Control Policy Config file
 ##################################################
-PROJECT_TARGET_ADD(soft-mixer-config)
+PROJECT_TARGET_ADD(softmixer-config)
 
 	file(GLOB CONF_FILES "*.json")
 
diff --git a/conf.d/project/htdocs/AFB-websock.js b/conf.d/project/htdocs/AFB-websock.js
new file mode 100644
index 0000000..99ab3b8
--- /dev/null
+++ b/conf.d/project/htdocs/AFB-websock.js
@@ -0,0 +1,177 @@
+var urlws;
+var urlhttp;
+
+AFB = function(base, initialtoken){
+
+urlws = "ws://"+window.location.host+"/"+base;
+urlhttp = "http://"+window.location.host+"/"+base;
+
+/*********************************************/
+/****                                     ****/
+/****             AFB_context             ****/
+/****                                     ****/
+/*********************************************/
+var AFB_context;
+{
+	var UUID = undefined;
+	var TOKEN = initialtoken;
+
+	var context = function(token, uuid) {
+		this.token = token;
+		this.uuid = uuid;
+	}
+
+	context.prototype = {
+		get token() {return TOKEN;},
+		set token(tok) {if(tok) TOKEN=tok;},
+		get uuid() {return UUID;},
+		set uuid(id) {if(id) UUID=id;}
+	};
+
+	AFB_context = new context();
+}
+/*********************************************/
+/****                                     ****/
+/****             AFB_websocket           ****/
+/****                                     ****/
+/*********************************************/
+var AFB_websocket;
+{
+	var CALL = 2;
+	var RETOK = 3;
+	var RETERR = 4;
+	var EVENT = 5;
+
+	var PROTO1 = "x-afb-ws-json1";
+
+	AFB_websocket = function(onopen, onabort) {
+		var u = urlws;
+		if (AFB_context.token) {
+			u = u + '?x-afb-token=' + AFB_context.token;
+			if (AFB_context.uuid)
+				u = u + '&x-afb-uuid=' + AFB_context.uuid;
+		}
+		this.ws = new WebSocket(u, [ PROTO1 ]);
+		this.pendings = {};
+		this.awaitens = {};
+		this.counter = 0;
+		this.ws.onopen = onopen.bind(this);
+		this.ws.onerror = onerror.bind(this);
+		this.ws.onclose = onclose.bind(this);
+		this.ws.onmessage = onmessage.bind(this);
+		this.onopen = onopen;
+		this.onabort = onabort;
+		this.onclose = onabort;
+	}
+
+	function onerror(event) {
+		var f = this.onabort;
+		if (f) {
+			delete this.onopen;
+			delete this.onabort;
+			f && f(this);
+		}
+		this.onerror && this.onerror(this);
+	}
+
+	function onopen(event) {
+		var f = this.onopen;
+		delete this.onopen;
+		delete this.onabort;
+		f && f(this);
+	}
+
+	function onclose(event) {
+		for (var id in this.pendings) {
+			var ferr = this.pendings[id].onerror;
+			ferr && ferr(null, this);
+		}
+		this.pendings = {};
+		this.onclose && this.onclose();
+	}
+
+	function fire(awaitens, name, data) {
+		var a = awaitens[name];
+		if (a)
+			a.forEach(function(handler){handler(data);});
+		var i = name.indexOf("/");
+		if (i >= 0) {
+			a = awaitens[name.substring(0,i)];
+			if (a)
+				a.forEach(function(handler){handler(data);});
+		}
+		a = awaitens["*"];
+		if (a)
+			a.forEach(function(handler){handler(data);});
+	}
+
+	function reply(pendings, id, ans, offset) {
+		if (id in pendings) {
+			var p = pendings[id];
+			delete pendings[id];
+			var f = p[offset];
+			f(ans);
+		}
+	}
+
+	function onmessage(event) {
+		var obj = JSON.parse(event.data);
+		var code = obj[0];
+		var id = obj[1];
+		var ans = obj[2];
+		AFB_context.token = obj[3];
+		switch (code) {
+		case RETOK:
+			reply(this.pendings, id, ans, 0);
+			break;
+		case RETERR:
+			reply(this.pendings, id, ans, 1);
+			break;
+		case EVENT:
+		default:
+			fire(this.awaitens, id, ans);
+			break;
+		}
+	}
+
+	function close() {
+		this.ws.close();
+                this.onabort();
+	}
+
+	function call(method, request) {
+		return new Promise((function(resolve, reject){
+			var id, arr;
+			do {
+			   id = String(this.counter = 4095 & (this.counter + 1));
+			} while (id in this.pendings);
+			this.pendings[id] = [ resolve, reject ];
+			arr = [CALL, id, method, request ];
+			if (AFB_context.token) arr.push(AFB_context.token);
+			this.ws.send(JSON.stringify(arr));
+		}).bind(this));
+	}
+
+	function onevent(name, handler) {
+		var id = name;
+		var list = this.awaitens[id] || (this.awaitens[id] = []);
+		list.push(handler);
+	}
+
+	AFB_websocket.prototype = {
+		close: close,
+		call: call,
+		onevent: onevent
+	};
+}
+/*********************************************/
+/****                                     ****/
+/****                                     ****/
+/****                                     ****/
+/*********************************************/
+return {
+	context: AFB_context,
+	ws: AFB_websocket
+};
+};
+
diff --git a/conf.d/project/htdocs/AudioBinding.css b/conf.d/project/htdocs/AudioBinding.css
new file mode 100644
index 0000000..1052aa7
--- /dev/null
+++ b/conf.d/project/htdocs/AudioBinding.css
@@ -0,0 +1,7 @@
+pre {outline: 1px solid #ccc; padding: 5px; margin: 5px; }
+.string { color: green; }
+.number { color: darkorange; }
+.boolean { color: blue; }
+.null { color: magenta; }
+.key { color: red; }
+
diff --git a/conf.d/project/htdocs/AudioBinding.js b/conf.d/project/htdocs/AudioBinding.js
new file mode 100644
index 0000000..0f5caf9
--- /dev/null
+++ b/conf.d/project/htdocs/AudioBinding.js
@@ -0,0 +1,197 @@
+    var afb = new AFB("api", "mysecret");
+    var ws;
+    var sndcard="HALNotSelected";
+    var evtidx=0;
+    var numid=0;
+
+    function syntaxHighlight(json) {
+        if (typeof json !== 'string') {
+             json = JSON.stringify(json, undefined, 2);
+        }
+        json = json.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+        return json.replace(/("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g, function (match) {
+            var cls = 'number';
+            if (/^"/.test(match)) {
+                if (/:$/.test(match)) {
+                    cls = 'key';
+                } else {
+                    cls = 'string';
+                }
+            } else if (/true|false/.test(match)) {
+                cls = 'boolean';
+            } else if (/null/.test(match)) {
+                cls = 'null';
+            }
+            return '<span class="' + cls + '">' + match + '</span>';
+        });
+    }
+
+    function getParameterByName(name, url) {
+        if (!url) {
+          url = window.location.href;
+        }
+        name = name.replace(/[\[\]]/g, "\\$&");
+        var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
+            results = regex.exec(url);
+        if (!results) return null;
+        if (!results[2]) return '';
+        return decodeURIComponent(results[2].replace(/\+/g, " "));
+    }
+
+    // default soundcard is "PCH"
+    var devid=getParameterByName("devid");
+    if (!devid) devid="hw:1";
+
+    var haldev=getParameterByName("haldev");
+    if (!haldev) haldev="scarlett-usb";
+
+    var sndname=getParameterByName("sndname");
+    if (!sndname) sndname="PCH";
+
+    var mode=getParameterByName("mode");
+    if (!mode) mode="0";
+
+
+
+
+    function replyok(obj) {
+            console.log("replyok:" + JSON.stringify(obj));
+            document.getElementById("output").innerHTML = "OK: "+ syntaxHighlight(obj);
+    }
+
+    function replyerr(obj) {
+            console.log("replyerr:" + JSON.stringify(obj));
+            document.getElementById("output").innerHTML = "ERROR: "+ syntaxHighlight(obj);
+    }
+
+    function gotevent(obj) {
+            console.log("gotevent:" + JSON.stringify(obj));
+            document.getElementById("outevt").innerHTML = (evtidx++) +": "+JSON.stringify(obj);
+    }
+
+    function send(message) {
+            var api = document.getElementById("api").value;
+            var verb = document.getElementById("verb").value;
+            document.getElementById("question").innerHTML = "subscribe: "+api+"/"+verb + " (" + JSON.stringify(message) +")";
+            ws.call(api+"/"+verb, {data:message}).then(replyok, replyerr);
+    }
+
+
+     // On button click from HTML page
+    function callbinder(api, verb, query) {
+            console.log ("subscribe api="+api+" verb="+verb+" query=" +query);
+            var question = urlws +"/" +api +"/" +verb + "?query=" + JSON.stringify(query);
+            document.getElementById("question").innerHTML = syntaxHighlight(question);
+            ws.call(api+"/"+verb, query).then(replyok, replyerr);
+    }
+
+
+    // Retreive Select value and Text from the binder
+    // Note: selection of value/text for a given context is huggly!!!
+    function querySelectList (elemid, api, verb, query) {
+
+        console.log("querySelectList elemid=%s api=%s verb=%s query=%s", elemid, api, verb, query);
+
+        var selectobj = document.getElementById(elemid);
+        if (!selectobj) {
+            return;
+        }
+
+        // onlick update selected HAL api
+        selectobj.onclick=function(){
+           sndcard= this.value;
+           console.log ("Default Selection=" + sndcard);
+        };
+
+        function gotit (result) {
+
+            // display response as for normal onclick action
+            replyok(result);
+            var response=result.response;
+
+            // fulfill select with avaliable active HAL
+            for (idx=0; idx<response.length; idx++) {
+                var opt = document.createElement('option');
+
+                // Alsa LowLevel selection mode
+                if (response[idx].name)  opt.text   = response[idx].name;
+                if (response[idx].devid) opt.value  = response[idx].devid;
+
+                // HAL selection mode
+                if (response[idx].shortname) opt.text  = response[idx].shortname;
+                if (response[idx].api) opt.value = response[idx].api;
+
+                selectobj.appendChild(opt);
+            }
+
+           sndcard= selectobj.value;
+        }
+
+        var question = urlws +"/"+api +"/" +verb + "?query=" + JSON.stringify(query);
+        document.getElementById("question").innerHTML = syntaxHighlight(question);
+
+        // request lowlevel ALSA to get API list
+        ws.call(api+"/"+verb, query).then(gotit, replyerr);
+    }
+
+    function refresh_list (self, api, verb, query) {
+        console.log("refresh_list id=%s api=%s verb=%s query=%s", self.id, api, verb, query);
+
+        if (self.value > 0) return;
+
+        // onlick update selected HAL api
+        self.onclick=function(){
+           numid = parseInt(self.value);
+           console.log ("Default numid=%d", numid);
+        };
+
+        function gotit (result) {
+
+            // display response as for normal onclick action
+            replyok(result);
+            var response=result.response;
+
+
+
+            // fulfill select with avaliable active HAL
+            for (idx=0; idx<response.length; idx++) {
+                var opt = document.createElement('option');
+
+                // Alsa LowLevel selection mode
+                opt.text   = response[idx].name + ' id=' + response[idx].id;
+                opt.value  = response[idx].id;
+
+                self.appendChild(opt);
+            }
+            self.selectedIndex=2;
+            numid = parseInt (self.value);
+        }
+
+        var question = urlws +"/"+api +"/" +verb + "?query=" + JSON.stringify(query);
+        document.getElementById("question").innerHTML = syntaxHighlight(question);
+
+        // request lowlevel ALSA to get API list
+        ws.call(api+"/"+verb, query).then(gotit, replyerr);
+    }
+
+
+    function init(elemid, api, verb, query) {
+
+        function onopen() {
+                // check for active HALs
+                querySelectList (elemid, api, verb, query);
+
+                document.getElementById("main").style.visibility = "visible";
+                document.getElementById("connected").innerHTML = "Binder WS Active";
+                document.getElementById("connected").style.background  = "lightgreen";
+                ws.onevent("*", gotevent);
+        }
+
+        function onabort() {
+                document.getElementById("main").style.visibility = "hidden";
+                document.getElementById("connected").innerHTML = "Connected Closed";
+                document.getElementById("connected").style.background  = "red";
+
+        }
+        ws = new afb.ws(onopen, onabort);
+    }
diff --git a/conf.d/project/htdocs/CMakeLists.txt b/conf.d/project/htdocs/CMakeLists.txt
new file mode 100644
index 0000000..ce916fa
--- /dev/null
+++ b/conf.d/project/htdocs/CMakeLists.txt
@@ -0,0 +1,34 @@
+###########################################################################
+# Copyright 2015, 2016, 2017 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.
+###########################################################################
+
+
+
+##################################################
+# HTML Testing Files
+##################################################
+PROJECT_TARGET_ADD(softmixer-html5)
+
+    file(GLOB SOURCE_FILES "*.html" "*.js" "*.jpg" "*.css")
+
+	add_input_files("${SOURCE_FILES}")
+
+    SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES
+	LABELS "HTDOCS"
+	OUTPUT_NAME ${TARGET_NAME}
+    )
+
diff --git a/conf.d/project/htdocs/README.md b/conf.d/project/htdocs/README.md
new file mode 100644
index 0000000..7aafea0
--- /dev/null
+++ b/conf.d/project/htdocs/README.md
@@ -0,0 +1,7 @@
+------------------------------------------------------------------------
+   Basic HTML & WS test
+------------------------------------------------------------------------
+
+  # Load bindings directly from development tree for debug
+  AFB_BINDER_NAME='sample' afb-daemon --verbose --verbose --token="" --ldpaths=build --port=1234 --roothttp=htdocs
+
diff --git a/conf.d/project/htdocs/index.html b/conf.d/project/htdocs/index.html
new file mode 100644
index 0000000..9a7d66f
--- /dev/null
+++ b/conf.d/project/htdocs/index.html
@@ -0,0 +1,43 @@
+<html>
+<head>
+    <title>Simple COntroller Test</title>
+    <link rel="stylesheet" href="AudioBinding.css">
+    <script type="text/javascript" src="AFB-websock.js"></script>
+    <script type="text/javascript" src="AudioBinding.js"></script>
+</head>
+
+<body onload="init('hal_registry','alsacore', 'hallist')">
+
+    <h1>Simple Control Test</h1>
+    <button id="connected" onclick="init()">Binder WS Fail</button> 
+    <button id="mnitoring" onclick="window.open('/monitoring/monitor.html','_monitor_ctl')">Debug/Monitoring</a></button>
+    <br><br>
+
+    <h2>V2 API CALL</h2>
+    <ol>
+	    <li><button onclick="callbinder('pol4a','request', {'uid':'navigation-role'});">Navigation Open</button></li>
+	    <li><button onclick="callbinder('pol4a','request', {'uid':'emergency-role'});">Emergency Open</button></li>
+    <br>
+    <li><button onclick="callbinder('pol4a', 'request', {'uid':'release-current'});">Release Current Role</button></li>
+    </ol>
+
+    <h2>V3 API CALL</h2>
+    <ol>
+    <li><button onclick="callbinder('pol4a','navigation-role');">Navigation Open</button></li>
+    <li><button onclick="callbinder('pol4a','emergency-role');">Emergency Open</button></li>
+    <br>
+    <li><button onclick="callbinder('pol4a','release-current');">Release Current Role</button></li>
+    </ol>
+
+    <h2>Signal/Timeout</h2>
+    <ol>
+    <li><button onclick="callbinder('pol4a','signal-timeout', {'timeout':3, 'data':'state', 'event':'quit'});">Get Signal in 3s</button></li>
+    </ol>
+
+    <div id="main" style="visibility:hidden">
+    <ol>
+    <li>Question <pre id="question"></pre>
+    <li>Response <pre id="output"></pre>
+    <li>Events: <pre id="outevt"></pre>
+    </ol>
+    </div>
diff --git a/conf.d/project/lua.d/CMakeLists.txt b/conf.d/project/lua.d/CMakeLists.txt
new file mode 100644
index 0000000..5171349
--- /dev/null
+++ b/conf.d/project/lua.d/CMakeLists.txt
@@ -0,0 +1,32 @@
+###########################################################################
+# Copyright 2017 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.
+###########################################################################
+
+
+##################################################
+# Soft Mixer Lua Scripts
+##################################################
+PROJECT_TARGET_ADD(softmixer-lua)
+
+    file(GLOB LUA_FILES "*.lua")
+
+	add_input_files("${LUA_FILES}")
+
+    SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES
+	LABELS "DATA"
+	OUTPUT_NAME ${TARGET_NAME}
+    )
diff --git a/conf.d/project/lua.d/softmixer-00.lua b/conf.d/project/lua.d/softmixer-00.lua
new file mode 100644
index 0000000..29d2c70
--- /dev/null
+++ b/conf.d/project/lua.d/softmixer-00.lua
@@ -0,0 +1,86 @@
+--[[
+  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: this file should be called before any other to assert declare function
+  is loaded before anything else.
+
+  References:
+    http://lua-users.org/wiki/DetectingUndefinedVariables
+
+--]]
+
+
+--===================================================
+--=  Niklas Frykholm
+-- basically if user tries to create global variable
+-- the system will not let them!!
+-- call GLOBAL_lock(_G)
+--
+--===================================================
+function GLOBAL_lock(t)
+  local mt = getmetatable(t) or {}
+  mt.__newindex = lock_new_index
+  setmetatable(t, mt)
+end
+
+--===================================================
+-- call GLOBAL_unlock(_G)
+-- to change things back to normal.
+--===================================================
+function GLOBAL_unlock(t)
+  local mt = getmetatable(t) or {}
+  mt.__newindex = unlock_new_index
+  setmetatable(t, mt)
+end
+
+function lock_new_index(t, k, v)
+  if (string.sub(k,1,1) ~= "_") then
+    GLOBAL_unlock(_G)
+    error("GLOBALS are locked -- " .. k ..
+          " must be declared local or prefix with '_' for globals.", 2)
+  else
+    rawset(t, k, v)
+  end
+end
+
+function unlock_new_index(t, k, v)
+  rawset(t, k, v)
+end
+
+-- return serialised version of printable table
+function Dump_Table(o)
+   if type(o) == 'table' then
+      local s = '{ '
+      for k,v in pairs(o) do
+         if type(k) ~= 'number' then k = '"'..k..'"' end
+         s = s .. '['..k..'] = ' .. Dump_Table(v) .. ','
+      end
+      return s .. '} '
+   else
+      return tostring(o)
+   end
+end
+
+
+-- simulate C prinf function
+printf = function(s,...)
+    io.write(s:format(...))
+    io.write("\n")
+    return
+end
+
+-- lock global variable
+GLOBAL_lock(_G)
diff --git a/conf.d/project/lua.d/softmixer-01.lua b/conf.d/project/lua.d/softmixer-01.lua
new file mode 100644
index 0000000..d4ae580
--- /dev/null
+++ b/conf.d/project/lua.d/softmixer-01.lua
@@ -0,0 +1,46 @@
+--[[
+  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
diff --git a/mixer-binding/CMakeLists.txt b/mixer-binding/CMakeLists.txt
index bc4ebe6..680c2c4 100644
--- a/mixer-binding/CMakeLists.txt
+++ b/mixer-binding/CMakeLists.txt
@@ -18,7 +18,7 @@
 
 
 # Add target to project dependency list
-PROJECT_TARGET_ADD(mixer-binding)
+PROJECT_TARGET_ADD(softmixer-binding)
 
     # Define project Targets
     ADD_LIBRARY(${TARGET_NAME} MODULE mixer-binding.c)
@@ -47,4 +47,4 @@ PROJECT_TARGET_ADD(mixer-binding)
     )
 
     # make sure config is copied before starting
-    add_dependencies(${TARGET_NAME} soft-mixer-config)
\ No newline at end of file
+    add_dependencies(${TARGET_NAME} softmixer-config softmixer-lua softmixer-html5)
\ No newline at end of file
diff --git a/mixer-binding/mixer-binding.c b/mixer-binding/mixer-binding.c
index 8fb4b50..15d13cd 100644
--- a/mixer-binding/mixer-binding.c
+++ b/mixer-binding/mixer-binding.c
@@ -29,6 +29,7 @@ PUBLIC afb_dynapi *AFB_default;
 // Config Section definition (note: controls section index should match handle retrieval in HalConfigExec)
 static CtlSectionT ctrlSections[]= {
     {.key="plugins" , .loadCB= PluginConfig},
+    {.key="onload"  , .loadCB= OnloadConfig},
     {.key="controls", .loadCB= ControlConfig},
 
     {.key=NULL}
diff --git a/nbproject/configurations.xml b/nbproject/configurations.xml
index 8e36718..8a74046 100644
--- a/nbproject/configurations.xml
+++ b/nbproject/configurations.xml
@@ -13,6 +13,7 @@
           <in>ctl-control.c</in>
           <in>ctl-event.c</in>
           <in>ctl-lua.c</in>
+          <in>ctl-onload.c</in>
           <in>ctl-plugin.c</in>
           <in>ctl-timer.c</in>
         </df>
@@ -20,6 +21,12 @@
       <df name="mixer-binding">
         <in>mixer-binding.c</in>
       </df>
+      <df name="plugins">
+        <df name="alsa">
+          <in>alsa-lua.c</in>
+          <in>alsa-softmixer.c</in>
+        </df>
+      </df>
     </df>
     <logicalFolder name="ExternalFiles"
                    displayName="Important Files"
@@ -118,6 +125,13 @@
         <cTool flags="0">
         </cTool>
       </item>
+      <item path="app-controller-submodule/ctl-lib/ctl-onload.c"
+            ex="false"
+            tool="0"
+            flavor2="3">
+        <cTool flags="0">
+        </cTool>
+      </item>
       <item path="app-controller-submodule/ctl-lib/ctl-plugin.c"
             ex="false"
             tool="0"
@@ -159,6 +173,10 @@
         <cTool flags="0">
         </cTool>
       </item>
+      <item path="plugins/alsa/alsa-lua.c" ex="false" tool="0" flavor2="0">
+      </item>
+      <item path="plugins/alsa/alsa-softmixer.c" ex="false" tool="0" flavor2="0">
+      </item>
     </conf>
   </confs>
 </configurationDescriptor>
diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index 644e359..28a0609 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -1,13 +1,13 @@
 ###########################################################################
 # Copyright 2015, 2016, 2017 IoT.bzh
 #
-# author: Romain Forlot <romain.forlot@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
+#     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,
@@ -17,24 +17,6 @@
 ###########################################################################
 
 
-PROJECT_TARGET_ADD(alsa-router)
-
-	# Define targets
-	ADD_LIBRARY(${TARGET_NAME} MODULE ${TARGET_NAME}.c)
-
-	# Alsa Plugin properties
-	SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES
-		LABELS "PLUGIN"
-		PREFIX ""
-		SUFFIX ".ctlso"
-		OUTPUT_NAME ${TARGET_NAME}
-	)
-
-	# Library dependencies (include updates automatically)
-	TARGET_LINK_LIBRARIES(${TARGET_NAME}
-		${link_libraries}
-	)
-
-	target_include_directories(${TARGET_NAME}
-	PRIVATE "../app-controller-submodule/ctl-lib"
-	PRIVATE "../mixer-binding")
+# Include any directory not starting with _
+# -----------------------------------------------------
+PROJECT_SUBDIRS_ADD(${PROJECT_SRC_DIR_PATTERN})
diff --git a/plugins/alsa/CMakeLists.txt b/plugins/alsa/CMakeLists.txt
new file mode 100644
index 0000000..51f4639
--- /dev/null
+++ b/plugins/alsa/CMakeLists.txt
@@ -0,0 +1,42 @@
+###########################################################################
+# Copyright 2015, 2016, 2017 IoT.bzh
+#
+# author: Romain Forlot <romain.forlot@iot.bzh>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#	http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+###########################################################################
+
+
+PROJECT_TARGET_ADD(alsa-router)
+
+        file(GLOB SOURCE_FILES "alsa-*.c")
+
+	# Define targets
+	ADD_LIBRARY(${TARGET_NAME} MODULE ${SOURCE_FILES})
+
+	# Alsa Plugin properties
+	SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES
+		LABELS "PLUGIN"
+		PREFIX ""
+		SUFFIX ".ctlso"
+		OUTPUT_NAME ${TARGET_NAME}
+	)
+
+	# Library dependencies (include updates automatically)
+	TARGET_LINK_LIBRARIES(${TARGET_NAME}
+		${link_libraries}
+	)
+
+	target_include_directories(${TARGET_NAME}
+	PRIVATE "${CMAKE_SOURCE_DIR}/app-controller-submodule/ctl-lib"
+	PRIVATE "${CMAKE_SOURCE_DIR}/mixer-binding")
diff --git a/plugins/alsa/alsa-dmix.c b/plugins/alsa/alsa-dmix.c
new file mode 100644
index 0000000..b162d04
--- /dev/null
+++ b/plugins/alsa/alsa-dmix.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2018 "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.
+ *
+ */
+
+#define _GNU_SOURCE  // needed for vasprintf
+
+#include "alsa-softmixer.h"
+
+static int uniqueIpcIndex = 1024;
+
+
+PUBLIC int AlsaCreateDmix(CtlSourceT *source) {
+
+    AFB_ApiNotice(source->api, "AlsaCreateDmix: start ");
+    
+    int cardid= AlsaCardInfoByPath ("/dev/snd/by-id/usb-Focusrite_Scarlett_18i8_USB_10004EE6-00");
+    AFB_ApiNotice(source->api, "AlsaCreateDmix: cardid=%d ", cardid);
+
+    snd_pcm_t *dmixPcm;
+    snd_config_t *dmixConfig, *slaveConfig, *elemConfig;
+    snd_pcm_stream_t streamPcm = SND_PCM_STREAM_PLAYBACK;
+    int error = 0, streamMode = SND_PCM_NONBLOCK;
+
+
+    error += snd_config_top(&dmixConfig);
+    error += snd_config_imake_integer(&elemConfig, "ipc_key", uniqueIpcIndex++);
+    error += snd_config_add(dmixConfig, elemConfig);
+    if (error) goto OnErrorExit;
+
+    error += snd_config_make_compound(&slaveConfig, "slave", 0);
+    error += snd_config_imake_string(&elemConfig, "pcm", "hw:6");
+    error += snd_config_add(slaveConfig, elemConfig);
+    if (error) goto OnErrorExit;
+
+    // add leaf into config
+    error += snd_config_add(dmixConfig, slaveConfig);
+    if (error) goto OnErrorExit;
+    
+    snd_config_update();
+    AlsaDumpConfig (source, snd_config, 1);
+    AlsaDumpConfig (source, dmixConfig, 1);
+
+
+   int status = _snd_pcm_dmix_open(&dmixPcm, "MyDMix", snd_config, dmixConfig, streamPcm , streamMode); 
+
+    AFB_ApiNotice(source->api, "AlsaCreateDmix: done");
+
+    return status;
+
+OnErrorExit:
+    AFB_ApiNotice(source->api, "AlsaCreateDmix: OnErrorExit");
+    return 1;
+}
\ No newline at end of file
diff --git a/plugins/alsa/alsa-lua.c b/plugins/alsa/alsa-lua.c
new file mode 100644
index 0000000..8f1329f
--- /dev/null
+++ b/plugins/alsa/alsa-lua.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2017 "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.
+ *
+*/
+
+#define _GNU_SOURCE  // needed for vasprintf
+
+#include "alsa-softmixer.h"
+
+
+// Force Lua2cWrapper inclusion within already existing plugin
+Lua2cWrapperT Lua2cWrap;
+
+CTLP_LUA2C (AlsaDmix, source, argsJ, responseJ) {
+	json_object* subscribeArgsJ = NULL;
+
+	int err = 0;
+	wrap_json_pack(&subscribeArgsJ, "{ss}", "value", "location");
+	AFB_ApiNotice(source->api, "--lua2c-- AlsaDmix");
+
+	return err;
+}
+
+CTLP_LUA2C (AlsaRouter, source, argsJ, responseJ) {
+	json_object* subscribeArgsJ = NULL;
+
+	int err = 0;
+	wrap_json_pack(&subscribeArgsJ, "{ss}", "value", "location");
+	AFB_ApiNotice(source->api, "lua2c router with %s", json_object_to_json_string_ext(subscribeArgsJ, JSON_C_TO_STRING_PRETTY));
+
+	return err;
+}
diff --git a/plugins/alsa/alsa-softmixer.c b/plugins/alsa/alsa-softmixer.c
new file mode 100644
index 0000000..bf195fb
--- /dev/null
+++ b/plugins/alsa/alsa-softmixer.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2017 "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.
+ *
+*/
+
+#define _GNU_SOURCE  // needed for vasprintf
+
+#include "alsa-softmixer.h"
+
+CTLP_CAPI_REGISTER("alsa-mixer");
+
+// Call at initialisation time
+CTLP_ONLOAD(plugin, callbacks) {
+	AFB_ApiDebug (plugin->api, "SoftMixer plugin: uid='%s' 'info='%s'", plugin->uid, plugin->info);
+        
+        // fake action call during init for debug
+        CtlSourceT source;
+        source.api = plugin->api;
+        AlsaCreateDmix (&source);
+        
+	return 0;
+}
+
+CTLP_CAPI (zone_ctl, source, argsJ, eventJ) {
+	json_object* subscribeArgsJ = NULL;
+
+	int err = 0;
+	wrap_json_pack(&subscribeArgsJ, "{ss}", "value", "location");
+	AFB_ApiDebug(source->api, "Calling zone_ctl with %s", json_object_to_json_string_ext(subscribeArgsJ, JSON_C_TO_STRING_PRETTY));
+
+	return err;
+}
+
+CTLP_CAPI (stream_ctl, source, argsJ, eventJ) {
+	json_object* subscribeArgsJ = NULL;
+
+	int err = 0;
+	wrap_json_pack(&subscribeArgsJ, "{ss}", "value", "location");
+	AFB_ApiDebug(source->api, "Calling stream_ctl with %s", json_object_to_json_string_ext(subscribeArgsJ, JSON_C_TO_STRING_PRETTY));
+
+	return err;
+}
diff --git a/plugins/alsa-router.c b/plugins/alsa/alsa-softmixer.h
index e0e7eb2..d413929 100644
--- a/plugins/alsa-router.c
+++ b/plugins/alsa/alsa-softmixer.h
@@ -1,6 +1,6 @@
 /*
- * Copyright (C) 2016 "IoT.bzh"
- * Author Romain Forlot <romain.forlot@iot.bzh>
+ * Copyright (C) 2018 "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.
@@ -18,6 +18,9 @@
 
 #define _GNU_SOURCE  // needed for vasprintf
 
+#ifndef _ALSA_SOFTMIXER_
+#define _ALSA_SOFTMIXER_
+
 #include <afb/afb-binding.h>
 #include <systemd/sd-event.h>
 #include <json-c/json_object.h>
@@ -27,20 +30,20 @@
 #include "ctl-plugin.h"
 #include "wrap-json.h"
 
-CTLP_CAPI_REGISTER("alsa-mixer");
+#include <alsa/asoundlib.h>
+
+// Provide proto for LibASound low level API
+int _snd_pcm_dmix_open(snd_pcm_t **pcmp, const char *name,
+		       snd_config_t *root, snd_config_t *conf,
+		       snd_pcm_stream_t stream, int mode);
+
+// alsa-tools-high.c
+PUBLIC void AlsaDumpConfig (CtlSourceT *source, snd_config_t *config, int indent);
 
-// Call at initialisation time
-/*CTLP_ONLOAD(plugin, callbacks) {
-	AFB_NOTICE ("GPS plugin: uid='%s' 'info='%s'", plugin->uid, plugin->info);
-	return api;
-}*/
+// alsa-tools-low.c
+PUBLIC int  AlsaCardInfoByPath (const char *control);
 
-CTLP_CAPI (zone_action, source, argsJ, eventJ) {
-	json_object* subscribeArgsJ = NULL, *responseJ = NULL;
 
-	int err = 0;
-	wrap_json_pack(&subscribeArgsJ, "{ss}", "value", "location");
-	AFB_ApiDebug(source->api, "Calling zone_action with %s", json_object_to_json_string_ext(subscribeArgsJ, JSON_C_TO_STRING_PRETTY));
+PUBLIC int AlsaCreateDmix (CtlSourceT *source);
 
-	return err;
-}
+#endif
\ No newline at end of file
diff --git a/plugins/alsa/alsa-tools-high.c b/plugins/alsa/alsa-tools-high.c
new file mode 100644
index 0000000..a86ba2e
--- /dev/null
+++ b/plugins/alsa/alsa-tools-high.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2018 "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.
+ *
+ */
+
+#define _GNU_SOURCE  // needed for vasprintf
+
+
+#include "alsa-softmixer.h"
+
+
+PUBLIC void AlsaDumpConfig(CtlSourceT *source, snd_config_t *config, int indent) {
+    snd_config_iterator_t it, next;
+
+    // hugly hack to get minimalist indentation
+    char *pretty = alloca(indent + 1);
+    for (int idx = 0; idx < indent; idx++) pretty[idx] = '-';
+    pretty[indent] = '\0';
+
+    snd_config_for_each(it, next, config) {
+        snd_config_t *node = snd_config_iterator_entry(it);
+        const char *key;
+
+        // ignore comment en empty lines
+        if (snd_config_get_id(node, &key) < 0) continue;
+
+        switch (snd_config_get_type(node)) {
+                long valueI;
+                const char *valueS;
+
+            case SND_CONFIG_TYPE_INTEGER:
+                snd_config_get_integer(node, &valueI);
+                AFB_ApiNotice(source->api, "DumpAlsaConfig: %s %s: %d (int)", pretty, key, (int) valueI);
+                break;
+
+            case SND_CONFIG_TYPE_STRING:
+                snd_config_get_string(node, &valueS);
+                AFB_ApiNotice(source->api, "DumpAlsaConfig: %s %s: %s (str)", pretty, key, valueS);
+                break;
+
+            case SND_CONFIG_TYPE_COMPOUND:
+                AFB_ApiNotice(source->api, "DumpAlsaConfig: %s %s { ", pretty, key);
+                AlsaDumpConfig(source, node, indent + 2);
+                AFB_ApiNotice(source->api, "DumpAlsaConfig: %s } ", pretty);
+                break;
+
+            default:
+                snd_config_get_string(node, &valueS);
+                AFB_ApiNotice(source->api, "DumpAlsaConfig: %s: key=%s unknown=%s", pretty, key, valueS);
+                break;
+        }
+    }
+}
diff --git a/plugins/alsa/alsa-tools-low.c b/plugins/alsa/alsa-tools-low.c
new file mode 100644
index 0000000..57b5e5c
--- /dev/null
+++ b/plugins/alsa/alsa-tools-low.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2018 "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.
+ *
+ */
+
+#define _GNU_SOURCE  // needed for vasprintf
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+#include "alsa-softmixer.h"
+
+// extracted IOCTLs from <alsa/asoundlib.h>
+#define _IOR_HACKED(type,nr,size)       _IOC(_IOC_READ,(type),(nr),size)
+#define SNDRV_CTL_IOCTL_CARD_INFO(size) _IOR_HACKED('U', 0x01, size)
+
+// Clone of AlsaLib snd_card_load2 static function
+int AlsaCardInfoByPath (const char *devpath) {
+    int open_dev;
+    snd_ctl_card_info_t *cardinfo = alloca(snd_ctl_card_info_sizeof());
+
+    open_dev = open(devpath, O_RDONLY);
+    if (open_dev >= 0) {
+        int rc = ioctl(open_dev, SNDRV_CTL_IOCTL_CARD_INFO(snd_ctl_card_info_sizeof()), cardinfo);
+        if (rc < 0) {
+            int err = -errno;
+            close(open_dev);
+            return err;
+        }
+        close(open_dev);
+        int cardId = snd_ctl_card_info_get_card(cardinfo);
+        return cardId;
+    } else {
+        return -errno;
+    }
+}
+