Move to support Audio-4a High Level API

8 files changed, 936 insertions, 1329 deletions

diff --git a/hook-plugin/CMakeLists.txt b/alsa-hook/CMakeLists.txt
index 197fb4c..5f3cc6d 100644
--- a/hook-plugin/CMakeLists.txt
+++ b/alsa-hook/CMakeLists.txt
@@ -19,10 +19,10 @@
 # Activate ALSA  dynamic build build mode get resolve "snd_dlsym_start"
 add_compile_options(-DPIC)
 
-PROJECT_TARGET_ADD(policy_hook_tcp)
+PROJECT_TARGET_ADD(policy_alsa_hook)
 
     # Define targets
-    ADD_LIBRARY(${TARGET_NAME} MODULE PolicyHookTcp.c)
+    ADD_LIBRARY(${TARGET_NAME} MODULE PolicyAlsaHook.c)
 
     # Alsa Plugin properties
     SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES
@@ -36,19 +36,3 @@ PROJECT_TARGET_ADD(policy_hook_tcp)
     )
     install(TARGETS ${TARGET_NAME} LIBRARY DESTINATION lib)
 
-PROJECT_TARGET_ADD(policy_hook_unix)
-
-    # Define targets
-    ADD_LIBRARY(${TARGET_NAME} MODULE PolicyHookUnix.c)
-
-    # Alsa Plugin properties
-    SET_TARGET_PROPERTIES(${TARGET_NAME} PROPERTIES
-	PREFIX ""
-        OUTPUT_NAME ${TARGET_NAME}
-    )
-
-    # Library dependencies (include updates automatically)
-    TARGET_LINK_LIBRARIES(${TARGET_NAME}
-        ${link_libraries}
-    )
-    install(TARGETS ${TARGET_NAME} LIBRARY DESTINATION lib)
diff --git a/alsa-hook/PolicyAlsaHook.c b/alsa-hook/PolicyAlsaHook.c
new file mode 100644
index 0000000..5e63825
--- /dev/null
+++ b/alsa-hook/PolicyAlsaHook.c
@@ -0,0 +1,640 @@
+/*
+ * 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.
+ *
+ * AfbCallBack (snd_ctl_hal_t *handle, int numid, void **response);
+ *  AlsaHookInit is mandatory and called with numid=0
+ *
+ * Syntax in .asoundrc file
+ *   CrlLabel    { cb MyFunctionName name "My_Second_Control" }
+ *
+ * Testing:
+ *   aplay -DAlsaHook /usr/share/sounds/alsa/test.wav
+ *
+ * References:
+ *  https://www.spinics.net/lists/alsa-devel/msg54235.html
+ *  https://github.com/shivdasgujare/utilities/blob/master/nexuss/alsa-scenario-hook/src/alsa-wrapper.c
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <alloca.h>
+
+#include <alsa/asoundlib.h>
+#include <alsa/conf.h>
+#include <alsa/pcm.h>
+
+#include <systemd/sd-event.h>
+#include <json-c/json.h>
+
+#include "afb/afb-wsj1.h"
+#include "afb/afb-ws-client.h"
+#include "afb/afb-proto-ws.h"
+
+#include <pthread.h>
+#include <semaphore.h>
+
+#define PLUGIN_ENTRY_POINT AlsaInstallHook
+    // Fulup Note: What ever you may find on Internet you should use
+    // SND_CONFIG_DLSYM_VERSION_HOOK and not SND_CONFIG_DLSYM_VERSION_HOOK
+    SND_DLSYM_BUILD_VERSION(PLUGIN_ENTRY_POINT, SND_PCM_DLSYM_VERSION)
+
+// this should be more than enough
+#define MAX_API_CALL 10
+#define MAX_EVT_CALL 10
+
+// timeout in ms
+#define REQUEST_DEFAULT_TIMEOUT 500
+#ifndef MAINLOOP_WATCHDOG
+#define MAINLOOP_WATCHDOG 100000
+#endif
+
+// closing message is added to query when PCM is closed
+#define CLOSING_MSG ",\"source\":-1}"
+
+// Currently not implemented
+#define UNUSED_ARG(x) UNUSED_ ## x __attribute__((__unused__))
+   
+typedef struct {
+    const char *apiverb;
+    json_object *queryJ;
+    sd_event_source *evtSource;
+    char *callIdTag;
+    void *afbClient;
+} afbRequestT;
+
+typedef struct {
+    const char *search;
+    const char *value;
+    int signal;
+} afbEventT;
+
+typedef struct {
+    char *name;
+    const char *api;
+    char *uid;
+    snd_pcm_t *pcm;
+    const char *uri;
+    struct afb_proto_ws *pws;
+    sd_event *sdLoop;
+    int verbose;
+    int synchronous;
+    sem_t semaphore;
+    long timeout;
+    int count;
+    int error;
+    afbRequestT **request;
+    afbRequestT **release;
+    afbEventT **event;
+} afbClientT;
+
+
+static void *LoopInThread(void *handle) {
+    afbClientT *afbClient = (afbClientT*) handle;
+    int count=0;
+    int watchdog= MAINLOOP_WATCHDOG *1000;
+
+    /* loop until end */
+    for (;;) {
+
+        if (afbClient->verbose) printf("ON-MAINLOOP ping=%d\n", count++);
+        sd_event_run(afbClient->sdLoop, watchdog);
+    }
+
+    return NULL;
+}
+
+// lost connect with the AudioDaemon
+static void OnHangupCB(void *handle) {
+
+    afbClientT *afbClient = (afbClientT*) handle;
+    SNDERR("(Hoops) Lost Connection to %s", afbClient->uri);
+
+    // try to close PCM when impossible terminate client
+    int err = snd_pcm_close (afbClient->pcm);
+    if (err) exit(1);
+}
+
+typedef enum {
+    HOOK_INSTALL,
+    HOOK_CLOSE,
+} hookActionT;
+
+void OnEventCB(void *handle, const char *event, int evtid, struct json_object *dataJ) {
+    afbClientT *afbClient = (afbClientT*) handle;
+    afbEventT **afbEvent = afbClient->event;
+    json_object *tmpJ;
+    int done;
+    
+    // if no event handler just ignore events
+    if (!afbEvent) goto OnErrorExit;
+
+    if (afbClient->verbose) printf("ON-EVENT processing signal event=%s search=%s\n", event, json_object_get_string(dataJ));
+
+    // loop on event/signal mapping table
+    for (int index=0; afbEvent[index]!= NULL; index++) {
+        done = json_object_object_get_ex(dataJ,afbEvent[index]->search, &tmpJ);
+        if (done) {
+            const char *value=json_object_get_string(tmpJ);
+            if (!strcmp(afbEvent[index]->value, value)) {
+                if (afbEvent[index]->signal) 
+                    if (afbClient->verbose) printf("ON-EVENT search=%s value=%s signal=%d\n", afbEvent[index]->search, value, afbEvent[index]->signal);
+                    if (afbEvent[index]->signal) kill (getpid(), afbEvent[index]->signal);
+            }
+        }
+    }
+    
+    return;
+
+OnErrorExit:
+    if (afbClient->verbose) SNDERR("ON-EVENT Fail/Ignored %s(%s)\n", event, json_object_get_string(dataJ));
+    return;
+}
+
+static void OnSuccessCB(void* UNUSED_ARG(ctx) , void* handle, json_object* responseJ, const char* info) {
+    
+    afbRequestT *afbRequest= (afbRequestT*)handle;
+    afbClientT *afbClient=(afbClientT*)afbRequest->afbClient;
+
+    if (afbClient->verbose) printf("OnSuccessCB callid='%s' response='%s' info='%s'\n", afbRequest->callIdTag, json_object_get_string(responseJ), info);
+
+    // Cancel timeout for this request
+    sd_event_source_unref(afbRequest->evtSource);
+    free(afbRequest->callIdTag);
+    
+    // When not more waiting call release semaphore
+    afbClient->count--;
+    if (afbClient->synchronous) {
+        if (afbClient->verbose) printf("OnSuccessCB One Request Done\n");
+        sem_post (&afbClient->semaphore);
+        afbClient->error=0;
+    } else if (afbClient->count == 0) {
+        if (afbClient->verbose) printf("OnSuccessCB No More Waiting Request\n");
+        sem_post (&afbClient->semaphore);
+    }
+}
+
+static void OnFailureCB(void* UNUSED_ARG(ctx), void* handle, const char *status, const char *info) {
+    
+    afbRequestT *afbRequest= (afbRequestT*)handle;
+    afbClientT *afbClient=(afbClientT*)afbRequest->afbClient;
+
+    if (afbClient->verbose) printf("OnFailureCB callid='%s' status='%s' info='%s'\n", afbRequest->callIdTag, status, info);
+
+    // Cancel timeout for this request
+    sd_event_source_unref(afbRequest->evtSource);
+    free(afbRequest->callIdTag);
+
+    afbClient->error=1;
+    sem_post (&afbClient->semaphore);
+}
+
+
+/* the callback interface for pws */
+static struct afb_proto_ws_client_itf itf = {
+    .on_reply_success = OnSuccessCB,
+    .on_reply_fail = OnFailureCB,
+    .on_event_create = NULL,
+    .on_event_remove = NULL,
+    .on_event_subscribe = NULL,
+    .on_event_unsubscribe = NULL,
+    .on_event_push = OnEventCB,
+    .on_event_broadcast = NULL,
+    .on_subcall = NULL,
+};
+
+int OnTimeoutCB (sd_event_source* source, uint64_t timer, void* handle) {
+    afbClientT *afbClient= (afbClientT*)handle;
+
+    SNDERR("\nON-TIMEOUT Call Request Fail URI=%s\n", afbClient->uri);
+
+    // Close PCM and release waiting client
+    afbClient->error=1;
+    sem_post (&afbClient->semaphore);
+
+    return 0;
+}
+
+// Call AGL binder asynchronously by with a timeout
+static int CallWithTimeout(afbClientT *afbClient, afbRequestT *afbRequest, int count) {
+    uint64_t usec;
+    int err;
+
+    // create a unique tag for request
+    (void) asprintf(&afbRequest->callIdTag, "%d:%s", count, afbRequest->apiverb);
+
+    // create a timer with ~250us accuracy
+    sd_event_now(afbClient->sdLoop, CLOCK_MONOTONIC, &usec);
+    sd_event_add_time(afbClient->sdLoop, &afbRequest->evtSource, CLOCK_MONOTONIC, usec+afbClient->timeout*1000, 250, OnTimeoutCB, afbClient);
+
+    // release action is optional
+    if (afbRequest->apiverb) {
+        if (afbClient->verbose) printf("CALL-REQUEST verb=%s tag=%s\n", afbRequest->apiverb, afbRequest->callIdTag);
+        err = afb_proto_ws_client_call(afbClient->pws, afbRequest->apiverb, afbRequest->queryJ, afbClient->uid, afbRequest);
+        if (err < 0 ) goto OnErrorExit;        
+    }
+    
+    // save client handle in request
+    afbRequest->afbClient = afbClient;    
+    afbClient->count ++;
+    
+    // in synchronous mode we wait for CB to return
+    if (afbClient->synchronous) sem_wait(&afbClient->semaphore);
+
+    return 0;
+
+OnErrorExit:
+    fprintf(stderr, "LaunchCallRequest: Fail call %s//%s&%s", afbClient->uri, afbRequest->apiverb, json_object_get_string(afbRequest->queryJ));
+    return 1;
+}
+
+static int LaunchCallRequest(afbClientT *afbClient, hookActionT action) {
+
+    pthread_t tid;
+    int err, idx;
+
+    switch (action) {
+        case HOOK_INSTALL: {
+
+            // init waiting counting semaphore
+            if (sem_init(&afbClient->semaphore, 1, 0) == -1) {
+               fprintf(stderr, "LaunchCallRequest: Fail Semaphore Init: %s\n", afbClient->uri);
+            }
+
+            // Create a main loop
+            err = sd_event_default(&afbClient->sdLoop);
+            if (err < 0) {
+                fprintf(stderr, "LaunchCallRequest: Connection to default event loop failed: %s\n", strerror(-err));
+                goto OnErrorExit;
+            }
+
+            // start a thread with a mainloop to monitor Audio-Agent
+            err = pthread_create(&tid, NULL, &LoopInThread, afbClient);
+            if (err) goto OnErrorExit;
+
+            afbClient->pws = afb_ws_client_connect_api(afbClient->sdLoop, afbClient->uri, &itf, afbClient);
+            if (afbClient->pws == NULL) {
+                fprintf(stderr, "LaunchCallRequest: Connection to %s failed\n", afbClient->uri);
+                goto OnErrorExit;
+            }
+
+            // register hanghup callback
+            afb_proto_ws_on_hangup(afbClient->pws, OnHangupCB);
+
+
+            // If no request exit now
+            if (!afbClient->release) {
+                fprintf(stderr, "LaunchCallRequest: HOOK_INSTALL:fatal mandatory request call missing in asoundrc\n");
+                goto OnErrorExit;;
+            }
+            
+            // send call request to audio-agent asynchronously (respond with thread mainloop context)
+            for (idx = 0; afbClient->request[idx] != NULL; idx++) {
+                err = CallWithTimeout(afbClient, afbClient->request[idx], idx);
+                if (err) goto OnErrorExit;
+            }
+            // launch counter to keep track of waiting request call
+            afbClient->count=idx;        
+            break;
+        }
+        
+        case HOOK_CLOSE: {
+            
+            // If no request exit now
+            if (!afbClient->release) {
+                if (afbClient->verbose) printf("LaunchCallRequest:optional HOOK_CLOSE no release control call\n");
+                break;
+            }
+
+            // send call request to audio-agent asynchronously (respond with thread mainloop context)
+            for (idx = 0; afbClient->release[idx] != NULL; idx++) {
+                err = CallWithTimeout(afbClient, afbClient->release[idx], idx);
+                if (err) goto OnErrorExit;
+            }
+            // launch counter to keep track of waiting request call
+            afbClient->count=idx;        
+            break;
+        }
+        
+    default:
+       fprintf(stderr, "LaunchCallRequest (hoops): Unknown action"); 
+       goto OnErrorExit;
+    }
+    
+    return 0;
+
+OnErrorExit:
+    return -1;
+}
+
+static int AlsaCloseHook(snd_pcm_hook_t *hook) {
+
+    afbClientT *afbClient = (afbClientT*) snd_pcm_hook_get_private (hook);
+
+    // launch call request and create a waiting mainloop thread
+    int err = LaunchCallRequest(afbClient, HOOK_CLOSE);
+    if (err < 0) {
+        fprintf (stderr, "PCM Fail to Enter Mainloop\n");
+        goto OnErrorExit;
+    }
+
+    // wait for all call request to return
+    if (!afbClient->synchronous) sem_wait(&afbClient->semaphore);
+    if (afbClient->error) {
+        fprintf (stderr, "AlsaCloseHook: Notice exit before audio-4a response\n");
+        goto OnErrorExit;
+    }
+
+    if (afbClient->verbose) fprintf(stdout, "\nAlsaHook Close Success PCM=%s URI=%s\n", snd_pcm_name(afbClient->pcm), afbClient->uri);
+    return 0;
+
+OnErrorExit:
+    fprintf(stderr, "\nAlsaPcmHook Plugin Close Fail PCM=%s\n", snd_pcm_name(afbClient->pcm));
+    return 0;
+}
+
+// Get an asoundrc compound and return it as a JSON object
+static json_object* AlsaGetJson (snd_config_t *ctlconfig, const char *id, const char*label) {
+    
+    json_object *queryJ;
+    snd_config_type_t ctype;
+    char* query;
+    
+    // each control is a sting that contain a json object
+    ctype = snd_config_get_type(ctlconfig);
+    snd_config_get_string(ctlconfig,  (const char**) &query);
+    if (ctype != SND_CONFIG_TYPE_STRING) {
+        SNDERR("Invalid signal number for %s value=%s", label, query);
+        goto OnErrorExit;
+    }
+
+    // cleanup string for json_tokener
+    for (int idx = 0; query[idx] != '\0'; idx++) {
+        if (query[idx] == '\'') query[idx] = '"';
+    }
+    queryJ = json_tokener_parse(query);
+    if (!queryJ) {
+        SNDERR("Not a valid Json object control='%s' query='%s'", id, query);
+        goto OnErrorExit;
+    }
+    
+    return queryJ;
+    
+OnErrorExit:
+    return NULL;
+}
+
+static int AlsaGetActions (snd_config_t *node, afbRequestT **afbRequest, const char*id) {
+    const char *callConf, *apiverb;
+    snd_config_type_t ctype;
+    snd_config_iterator_t currentCall, follow;
+    int callCount=0;
+
+    ctype = snd_config_get_type(node);
+    if (ctype != SND_CONFIG_TYPE_COMPOUND) {
+        snd_config_get_string(node, &callConf);
+        SNDERR("Invalid compound type for %s", callConf);
+        goto OnErrorExit;
+    }
+
+
+    // loop on each call
+    snd_config_for_each(currentCall, follow, node) {
+        snd_config_t *ctlconfig = snd_config_iterator_entry(currentCall);
+
+        // ignore empty line
+        if (snd_config_get_id(ctlconfig, &apiverb) < 0) continue;
+
+        // allocate an empty call request
+        afbRequest[callCount] = calloc(1, sizeof (afbRequestT));
+        afbRequest[callCount]->apiverb=strdup(apiverb);
+        afbRequest[callCount]->queryJ= AlsaGetJson(ctlconfig, id, apiverb);
+        if (!afbRequest[callCount]->queryJ) goto OnErrorExit;
+
+        // move to next call if any
+        callCount ++;
+        if (callCount == MAX_EVT_CALL) {
+            SNDERR("Too Many call MAX_EVT_CALL=%d", MAX_EVT_CALL);
+            goto OnErrorExit;
+        }
+        afbRequest[callCount]=NULL; // afbEvent array is NULL terminated
+    }
+    
+    return 0;
+
+OnErrorExit:
+    return 1;
+}
+
+static int AlsaGetEvents (snd_config_t *node, afbEventT **afbEvent, const char*id) {
+
+    const char *confEvents, *evtpattern;
+    snd_config_type_t ctype;
+    snd_config_iterator_t currentEvt, follow;
+    snd_config_t *itemConf;
+    int callCount=0;
+    int err;
+
+    ctype = snd_config_get_type(node);
+    if (ctype != SND_CONFIG_TYPE_COMPOUND) {
+        snd_config_get_string(node, &confEvents);
+        SNDERR("Invalid compound type for %s", confEvents);
+        goto OnErrorExit;
+    }
+
+    // loop on each call
+    snd_config_for_each(currentEvt, follow, node) {
+        snd_config_t *ctlconfig = snd_config_iterator_entry(currentEvt);
+
+        // ignore empty line
+        if (snd_config_get_id(ctlconfig, &evtpattern) < 0) continue;
+
+        // allocate an empty call request
+        afbEvent[callCount] = calloc(1, sizeof (afbEventT));
+
+        // extract signal num from config label
+        for (int idx=0; evtpattern[idx] != '\0'; idx++) {
+            if (evtpattern[idx]=='-' && evtpattern[idx+1] != '\0') {
+                int done= sscanf (&evtpattern[idx+1], "%d",&afbEvent[callCount]->signal);
+                if (done != 1) {
+                    SNDERR("Invalid Signal '%s' definition should be something like Sig-xx", evtpattern);
+                    goto OnErrorExit;
+                }
+                break;
+            }
+        }
+
+        // extract signal key value search pattern
+        ctype = snd_config_get_type(ctlconfig);
+        if (ctype != SND_CONFIG_TYPE_COMPOUND) {
+            snd_config_get_string(ctlconfig, &confEvents);
+            SNDERR("Invalid event search pattern for %s value=%s", evtpattern, confEvents);
+            goto OnErrorExit;
+        }
+
+        // pattern should have a search
+        err = snd_config_search(ctlconfig, "search", &itemConf);
+        if (!err) {
+            const char *search;
+            if (snd_config_get_string(itemConf, &search) < 0) {
+                SNDERR("Invalid event/signal 'search' should be a string %s", confEvents);
+                goto OnErrorExit;
+            }
+            afbEvent[callCount]->search=strdup(search);
+        } else {
+            SNDERR("Missing 'search' from event/signal 'search' from signal definition %s", confEvents);
+            goto OnErrorExit;                    
+        }
+
+        // pattern should have a value
+        err = snd_config_search(ctlconfig, "value", &itemConf);
+        if (!err) {
+            const char *value;
+            if (snd_config_get_string(itemConf, &value) < 0) {
+                SNDERR("Invalid event/signal 'value' should be a string %s", confEvents);
+                goto OnErrorExit;
+            }
+            afbEvent[callCount]->value=strdup(value);
+        } else {
+            SNDERR("Missing 'value' from event/signal 'value' from signal definition %s", confEvents);
+            goto OnErrorExit;                    
+        }
+
+
+        // move to next call if any
+        callCount ++;
+        if (callCount == MAX_EVT_CALL) {
+            SNDERR("Too Many call MAX_EVT_CALL=%d", MAX_EVT_CALL);
+            goto OnErrorExit;
+        }
+        afbEvent[callCount]=NULL; // afbEvent array is NULL terminated
+    }
+    return 0;
+
+OnErrorExit:
+    return 1;
+}
+
+// Function call when Plugin PCM is OPEN
+int PLUGIN_ENTRY_POINT (snd_pcm_t *pcm, snd_config_t *conf) {
+    snd_pcm_hook_t *h_close = NULL;
+    snd_config_iterator_t it, next;
+    afbClientT *afbClient = malloc(sizeof (afbClientT));
+    int err;
+
+    // start populating client handle
+    afbClient->pcm = pcm;
+    afbClient->name= strdup(snd_pcm_name(pcm));
+    afbClient->verbose = 0;
+    (void) asprintf(&afbClient->uid, "alsa-hook-pid:%d", getpid());
+
+    
+    // Get PCM arguments from asoundrc
+    snd_config_for_each(it, next, conf) {
+        snd_config_t *node = snd_config_iterator_entry(it);
+        const char *id;
+
+        // ignore comment en empty lines
+        if (snd_config_get_id(node, &id) < 0) continue;
+        if (strcmp(id, "comment") == 0 || strcmp(id, "hint") == 0) continue;
+
+        if (strcmp(id, "uri") == 0) {
+            const char *uri;
+            if (snd_config_get_string(node, &uri) < 0) {
+                SNDERR("Invalid String for %s", id);
+                goto OnErrorExit;
+            }
+            afbClient->uri=strdup(uri);
+            continue;
+        }
+
+        if (strcmp(id, "verbose") == 0) {
+            afbClient->verbose= snd_config_get_bool(node);
+            if (afbClient->verbose < 0) {
+                SNDERR("Invalid Boolean for %s", id);
+                goto OnErrorExit;
+            }
+            continue;
+        }
+        
+        if (strcmp(id, "synchronous") == 0) {
+            afbClient->synchronous= snd_config_get_bool(node);
+            if (afbClient->synchronous < 0) {
+                SNDERR("Invalid Boolean for %s", id);
+                goto OnErrorExit;
+            }
+            continue;
+        }
+        
+        if (strcmp(id, "timeout") == 0) {
+            if (snd_config_get_integer(node, &afbClient->timeout) < 0) {
+                SNDERR("Invalid timeout Integer %s", id);
+                goto OnErrorExit;
+            }
+            continue;
+        }
+        
+        if (strcmp(id, "request") == 0) {
+            afbClient->request =  malloc(MAX_API_CALL * sizeof(afbRequestT*));;
+            int err= AlsaGetActions(node, afbClient->request , id);
+            if (err) goto OnErrorExit;
+            continue;
+        }
+                
+        if (strcmp(id, "release") == 0) {
+            afbClient->release =  malloc(MAX_API_CALL * sizeof(afbRequestT*));;
+            int err= AlsaGetActions(node, afbClient->release, id);
+            if (err) goto OnErrorExit;
+            continue;
+        }
+        
+        if (strcmp(id, "events") == 0) {
+            afbClient->event=  malloc(MAX_API_CALL * sizeof(afbRequestT*));;
+            int err= AlsaGetEvents(node, afbClient->event, id);
+            if (err) goto OnErrorExit;
+            continue;
+        }
+    }
+
+    if (afbClient->verbose) fprintf(stdout, "\nAlsaHook Install Start PCM=%s URI=%s\n", snd_pcm_name(afbClient->pcm), afbClient->uri);
+
+    err = snd_pcm_hook_add(&h_close, afbClient->pcm, SND_PCM_HOOK_TYPE_CLOSE, AlsaCloseHook, afbClient);
+    if (err < 0) goto OnErrorExit;
+
+    // launch call request and create a waiting mainloop thread
+    err = LaunchCallRequest(afbClient, HOOK_INSTALL);
+    if (err < 0) {
+        fprintf (stderr, "PCM Fail to Enter Mainloop\n");
+        goto OnErrorExit;
+    }
+
+    // wait for all call request to return
+    if (!afbClient->synchronous) sem_wait(&afbClient->semaphore);
+    if (afbClient->error) {
+        fprintf (stderr, "PCM Authorisation Deny from AAAA Controller (AGL Advanced Audio Agent)\n");
+        goto OnErrorExit;
+    }
+
+    if (afbClient->verbose) fprintf(stdout, "\nAlsaHook Install Success PCM=%s URI=%s\n", afbClient->name, afbClient->uri);
+    return 0;
+
+OnErrorExit:
+    fprintf(stderr, "\nAlsaPcmHook Plugin Policy Control Fail PCM=%s\n", afbClient->name);
+    if (h_close)
+        snd_pcm_hook_remove(h_close);
+
+    return -EINVAL;
+}
+
diff --git a/alsa-hook/README.md b/alsa-hook/README.md
new file mode 100644
index 0000000..a51ec19
--- /dev/null
+++ b/alsa-hook/README.md
@@ -0,0 +1,211 @@
+Alsa-Hook-Plugin
+
+Object: Provide a Hook on Alsa PCM to check permission again AGL Advance Audio Agent
+Status: Release Candidate
+Author: Fulup Ar Foll fulup@iot.bzh
+Date  : August-2017
+ References: https://www.spinics.net/lists/alsa-devel/msg54235.html
+
+
+## Functionalities:
+ - Execute a set of unix/ws RPC request again AGL binders to allow/deny access
+ - Keep websocket open in an idependant thread in order to monitor event received from AGL audio agent
+
+## Installation
+ - Alsaplugins are typically search in /usr/share/alsa-lib. Nevertheless a full path might be given
+ - This plugin implement a hook on a slave PCM. Typically this slave PCM is a dedicated virtual channel (eg: navigation, emergency,...)
+ - Config should be place in ~/.asoundrc (see config sample in PROJECT_ROOT/conf.d/alsa)
+
+## Test
+ - Install a full .asoundrc from conf.d/project/alsa.d
+ - Check SoundCard ==> speaker-test -Dhw:v1340   -c2 -twav
+ - Check MixerPCM  ==> speaker-test -DSpeakers   -c2 -twav 
+ - Check SoftVol   ==> speaker-test -DMusicPCM   -c2 -twav 
+ - Check Plugin    ==> speaker-test -DMultimedia -c2 -twav
+ - Check MultiMedia aplay -DDMyNavPCM /usr/share/sounds/alsa/test.wav
+
+
+## Pulse audio integration
+
+By default Pulse only auto detect hardware sound card and virtual channel should be specified
+
+    1) update ~/.asoundrc file and check basic ALSA virtual channel works as expected
+    2) kill/restart pulseaudio server to force alsa hookplugin loading
+    3) declare alsa virtual channel as pulse sink
+       - pacmd load-module module-alsa-sink device=MusicPCM
+       - pacmd load-module module-alsa-sink device=NavPCM control=NavAlsaCtl
+       - pacmd list-sinks | grep -i music
+    4) check your virtual pulse sink work
+       - paplay -d alsa_output.MusicPCM /usr/share/sounds/alsa/test.wav
+       - paplay -d alsa_output.NavPCM /usr/share/sounds/alsa/Front_Center.wav
+
+optional integration with ALSA legacy apps
+
+    5) start audio-pol4a controller
+       - repeat previous step(3) this time with device=Multimedia device=Navigation, ....
+    6) check virtual channel with policy controller protection
+       - paplay -d alsa_output.Multimedia /usr/share/sounds/alsa/test.wav
+       - paplay -d alsa_output.Navigation /usr/share/sounds/alsa/Front_Center.wav
+
+
+Bug/Feature: 
+    1) when softvol control is initialised from plugin and not
+       from AGL binding. At 1st run ctl has invalid TLV and cannot be used
+       Bypass Solution: 
+         * start audio-binder before playing sound (binding create control before softvol plugin)
+         * run a dummy aplay -DMyNavPCM "" to get a clean control
+    2) When using Audio-Pol4a to protect virtual channel, the audio policy controller should
+       run before adding virtual channel into pulse.
+    3) In order to leverage SMACK to protect virtual audio role, a Pulse rooting plugin should be used.
+
+
+## Alsa Config Sample
+
+```
+# ------------------------------------------------------
+# Mixer PCM allow to play multiple stream simultaneously
+# ------------------------------------------------------
+pcm.Speakers { 
+    type dmix            
+    slave {pcm "hw:v1340"}  #Jabra Solmate 1
+    ipc_key 1001          # ipc_key should be unique to each dmix
+} 
+
+# -----------------------------------------------------
+#  Register ControllerHookPlugin (ToiBeFix fullpath)
+# -----------------------------------------------------
+pcm_hook_type.CtlHookPlugin {
+    install "AlsaInstallHook" 
+    lib "/home/fulup/Workspace/Audio-4a/alsa-4a/build/alsa-hook/policy_alsa_hook.so"
+}
+
+
+# -------------------------------------------------------
+# Define one Audio Virtual Channel per Audio Roles
+# -------------------------------------------------------
+pcm.MusicPCM {
+    type softvol
+
+    # Point Slave on HOOK for policies control
+    slave.pcm "Speakers"
+
+    # name should match with HAL definition
+    control.name  "Playback Multimedia"
+}
+
+pcm.NaviPCM {
+    type softvol
+
+    # Point Slave on HOOK for policies control
+    slave.pcm "Speakers"
+
+    # name should match with HAL definition
+    control.name  "Playback Navigation"
+}
+
+pcm.UrgentPCM {
+    type softvol
+
+    # Point Slave on HOOK for policies control
+    slave.pcm "Speakers"
+
+    # name should match with HAL definition
+    control.name  "Playback Emergency"
+}
+
+# ----------------------------------------------------
+# Define one hooked PCM channel per Audio Roles
+# ----------------------------------------------------
+pcm.Multimedia {
+    type hooks
+    slave {pcm "MusicPCM"}
+    hooks.0 {
+        comment "Defined used hook sharelib and provide arguments/config to install func"
+        type "CtlHookPlugin"
+        hook_args {
+
+            # print few log messages (default false)
+            verbose true 
+
+            # uri to audio-4a policy engine
+            uri="unix:/var/tmp/pol4a"
+
+            # timeout in ms (default 500)
+            timeout 5000
+
+            # force API synchronous mode
+            synchronous true
+
+            # api subcall to request a role
+            request {
+                multimedia-role "{'uid':'alsa-hook-client'}"
+                signal-timeout  "{'timeout':180, 'music':'quit'}"
+            } 
+
+            # api subcall to request a role
+            release {
+                release-role "{'uid':'alsa-hook-client'}"
+            } 
+   
+            # map AGL event on Unix signal. Search in event for json key=value
+            events {   
+                sig-02 {search music, value quit}
+                sig-31 {search event, value start}
+                sig-32 {search event, value start}
+            }
+        }
+    }
+}
+
+pcm.Navigation {
+    type hooks
+    slave {pcm "NaviPCM"}
+    hooks.0 {
+        comment "Defined used hook sharelib and provide arguments/config to install func"
+        type "CtlHookPlugin"
+        hook_args {
+
+            # print few log messages (default false)
+            verbose true 
+
+            # uri to audio-4a policy engine
+            uri="unix:/var/tmp/pol4a"
+
+            # timeout in ms (default 500)
+            timeout 5000
+
+            # force API synchronous mode
+            synchronous true
+
+            # api subcall to request a role
+            request {
+                navigation-role "{'uid':'alsa-hook-client'}"
+                signal-timeout  "{'timeout':5, 'navi':'quit'}"
+            } 
+
+            # api subcall to request a role
+            release {
+                release-role "{'uid':'alsa-hook-client'}"
+            } 
+   
+            # map AGL event on Unix signal. Search in event for json key=value
+            events {   
+                sig-02 {search navi, value quit}
+                sig-31 {search event, value start}
+                sig-32 {search event, value start}
+            }
+        }
+    }
+}
+
+
+```
+
+NOTE:
+
+* Hook plugin is loaded by Alsa libasound within client context. It inherits client process attributes, as UID/GID and
+SMACK label when running on AGL. The smack label is control by AGL security framework.
+As a result a control request succeeds only when client application permission match requested audio role inside Cynara security database.
+
+* Hook plugin keep a connection with the Audio-Agent until PCM is closed by the application. This connection allow the
+Audio-Agent to send events. eg: pause, quit, mute, ...
\ No newline at end of file
diff --git a/conf.d/cmake/config.cmake b/conf.d/cmake/config.cmake
index 4ace99c..d3ed120 100644
--- a/conf.d/cmake/config.cmake
+++ b/conf.d/cmake/config.cmake
@@ -205,7 +205,7 @@ endif()
 if(EXISTS ${CMAKE_SOURCE_DIR}/../afb-controller/build/afb-source/afb-control-afb.so)
 set(CTL_BUILD_PATH "--binding=../../afb-controller/build/afb-source/afb-control-afb.so")
 endif()
-set(CLOSING_MESSAGE "Debug from afb-daemon --port=1234 ${MONITORING_ALIAS} --ldpaths=. ${CTL_BUILD_PATH} --workdir=. --roothttp=../htdocs --tracereq=common --token= --verbose ")
+set(CLOSING_MESSAGE "Debug from afb-daemon --port=1234 ${MONITORING_ALIAS} --ldpaths=package/lib ${CTL_BUILD_PATH} --workdir=. --roothttp=../htdocs --tracereq=common --token= --verbose ")
 set(PACKAGE_MESSAGE "Install widget file using in the target : afm-util install ${PROJECT_NAME}.wgt")
 
 # When Present LUA is used by the controller
diff --git a/hook-plugin/PolicyHookTcp.c b/hook-plugin/PolicyHookTcp.c
deleted file mode 100644
index c4b7c15..0000000
--- a/hook-plugin/PolicyHookTcp.c
+++ /dev/null
@@ -1,560 +0,0 @@
-/*
- * 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.
- *
- * AfbCallBack (snd_ctl_hal_t *handle, int numid, void **response);
- *  AlsaHookInit is mandatory and called with numid=0
- *
- * Syntax in .asoundrc file
- *   CrlLabel    { cb MyFunctionName name "My_Second_Control" }
- *
- * Testing:
- *   aplay -DAlsaHook /usr/share/sounds/alsa/test.wav
- *
- * References:
- *  https://www.spinics.net/lists/alsa-devel/msg54235.html
- *  https://github.com/shivdasgujare/utilities/blob/master/nexuss/alsa-scenario-hook/src/alsa-wrapper.c
- */
-
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <alsa/asoundlib.h>
-#include <alsa/conf.h>
-#include <alsa/pcm.h>
-
-#include <systemd/sd-event.h>
-#include <json-c/json.h>
-
-#include "afb/afb-wsj1.h"
-#include "afb/afb-ws-client.h"
-#include <pthread.h>
-#include <semaphore.h>
-
-
-#define PLUGIN_ENTRY_POINT AlsaInstallHook
-    // Fulup Note: What ever you may find on Internet you should use
-    // SND_CONFIG_DLSYM_VERSION_HOOK and not SND_CONFIG_DLSYM_VERSION_HOOK
-    SND_DLSYM_BUILD_VERSION(PLUGIN_ENTRY_POINT, SND_PCM_DLSYM_VERSION)
-
-// this should be more than enough
-#define MAX_API_CALL 10
-#define MAX_EVT_CALL 10
-
-// timeout in ms
-#define REQUEST_DEFAULT_TIMEOUT 500
-#ifndef MAINLOOP_WATCHDOG
-#define MAINLOOP_WATCHDOG 100000
-#endif
-
-// closing message is added to query when PCM is closed
-#define CLOSING_MSG ",\"source\":-1}"
-
-// Currently not implemented
-#define UNUSED_ARG(x) UNUSED_ ## x __attribute__((__unused__))
-void OnRequestCB(void* UNUSED_ARG(handle) , const char* UNUSED_ARG(api), const char* UNUSED_ARG(verb), struct afb_wsj1_msg*UNUSED_ARG(msg)) {}
-
-typedef struct {
-    const char *api;
-    const char *openVerb;
-    const char *closeVerb;
-    long timeout;
-    char *query;
-    size_t length;
-
-    sd_event_source *evtSource;
-    char *callIdTag;
-    void *afbClient;
-} afbRequestT;
-
-typedef struct {
-    const char *name;
-    int  signal;
-} afbEventT;
-
-typedef struct {
-    snd_pcm_t *pcm;
-    const char *uri;
-    struct afb_wsj1 *wsj1;
-    sd_event *sdLoop;
-    int verbose;
-    sem_t semaphore;
-    int count;
-    int error;
-    afbRequestT **request;
-    afbEventT **event;
-} afbClientT;
-
-
-
-static void *LoopInThread(void *handle) {
-    afbClientT *afbClient = (afbClientT*) handle;
-    int count=0;
-    int watchdog= MAINLOOP_WATCHDOG *1000;
-
-    /* loop until end */
-    for (;;) {
-
-        if (afbClient->verbose) printf("ON-MAINLOOP ping=%d\n", count++);
-        sd_event_run(afbClient->sdLoop, watchdog);
-    }
-
-    return NULL;
-}
-
-// lost connect with the AudioDaemon
-static void OnHangupCB(void *handle, struct afb_wsj1 *wsj1) {
-
-    afbClientT *afbClient = (afbClientT*) handle;
-    SNDERR("(Hoops) Lost Connection to %s", afbClient->uri);
-
-    // try to close PCM when impossible terminate client
-    int err = snd_pcm_close (afbClient->pcm);
-    if (err) exit(1);
-}
-
-typedef enum {
-    HOOK_INSTALL,
-    HOOK_CLOSE,
-} hookActionT;
-
-
-void OnEventCB(void *handle, const char *event, struct afb_wsj1_msg *msg) {
-    afbClientT *afbClient = (afbClientT*) handle;
-    afbEventT **afbEvent = afbClient->event;
-    json_object *eventJ, *tmpJ, *dataJ;
-    const char *label;
-    int value, done, index;
-
-    eventJ = afb_wsj1_msg_object_j(msg);
-    done= json_object_object_get_ex(eventJ,"data", &dataJ);
-    if (!done) {
-        SNDERR ("PCM_HOOK: uri=%s empty event label", afbClient->uri);
-        goto OnErrorExit;
-    }
-
-    json_object_object_get_ex(dataJ,"signal", &tmpJ);
-    label=json_object_get_string(tmpJ);
-
-    json_object_object_get_ex(dataJ,"value", &tmpJ);
-    value=json_object_get_int(tmpJ);
-
-    for (index=0; afbEvent[index]!= NULL; index++) {
-        if (!strcmp(afbEvent[index]->name, label)) break;
-    }
-
-    if (!afbEvent[index] || !afbEvent[index]->signal) {
-        SNDERR ("PCM_HOOK: Unsupported uri=%s label=%s", afbClient->uri, label);
-        return;
-    }
-
-    // send signal to self process
-    kill (getpid(), afbEvent[index]->signal);
-
-    if (afbClient->verbose) printf("ON-EVENT label=%s signal=%d\n", label, value);
-    return;
-
-OnErrorExit:
-    SNDERR("ON-EVENT %s(%s)\n", event, afb_wsj1_msg_object_s(msg));
-    return;
-}
-
-// callback interface for wsj1
-static struct afb_wsj1_itf itf = {
-    .on_hangup = OnHangupCB,
-    .on_call = OnRequestCB,
-    .on_event = OnEventCB
-};
-
-void OnResponseCB(void *handle, struct afb_wsj1_msg *msg) {
-    afbRequestT *afbRequest= (afbRequestT*)handle;
-    afbClientT *afbClient=(afbClientT*)afbRequest->afbClient;
-
-    if (afbClient->verbose) printf("ON-RESPONSE call=%s response=%s\n", afbRequest->callIdTag, afb_wsj1_msg_object_s(msg));
-
-    // Cancel timeout for this request
-    sd_event_source_unref(afbRequest->evtSource);
-
-    if (! afb_wsj1_msg_is_reply_ok(msg)) goto OnErrorExit;
-
-    // When not more waiting call release semaphore
-    afbClient->count--;
-    if (afbClient->count == 0) {
-        if (afbClient->verbose) printf("ON-RESPONSE No More Waiting Request\n");
-        afbClient->error=0;
-        sem_post (&afbClient->semaphore);
-    }
-    return;
-
-OnErrorExit:
-    fprintf(stderr, "ON-RESPONSE ERROR call=%s response=%s\n", afbRequest->callIdTag, afb_wsj1_msg_object_s(msg));
-   afbClient->error=1;
-    sem_post (&afbClient->semaphore);
-}
-
-int OnTimeoutCB (sd_event_source* source, uint64_t timer, void* handle) {
-    afbClientT *afbClient= (afbClientT*)handle;
-
-    SNDERR("\nON-TIMEOUT Call Request Fail URI=%s\n", afbClient->uri);
-
-    // Close PCM and release waiting client
-    afbClient->error=1;
-    sem_post (&afbClient->semaphore);
-
-    return 0;
-}
-
-// Call AGL binder asynchronously by with a timeout
-static int CallWithTimeout(afbClientT *afbClient, afbRequestT *afbRequest, int count, hookActionT action) {
-    uint64_t usec;
-    const char * apiVerb;
-    int err;
-
-    // create a unique tag for request
-    (void) asprintf(&afbRequest->callIdTag, "%d:%s/%s", count, afbRequest->api, afbRequest->openVerb);
-
-    // create a timer with ~250us accuracy
-    sd_event_now(afbClient->sdLoop, CLOCK_MONOTONIC, &usec);
-    sd_event_add_time(afbClient->sdLoop, &afbRequest->evtSource, CLOCK_MONOTONIC, usec+afbRequest->timeout*1000, 250, OnTimeoutCB, afbClient);
-
-
-    // on PCM close replace last '}' by CLOSING_MSG
-    if (action == HOOK_CLOSE) apiVerb= afbRequest->closeVerb;
-    else apiVerb= afbRequest->openVerb;
-
-    // release action is optional
-    if (apiVerb) {    
-        if (afbClient->verbose) printf("CALL-REQUEST api=%s/%s tag=%s\n", afbRequest->api, apiVerb, afbRequest->callIdTag);
-        err = afb_wsj1_call_s(afbClient->wsj1, afbRequest->api, apiVerb, afbRequest->query, OnResponseCB, afbRequest);
-        if (err) goto OnErrorExit;        
-    }
-    // save client handle in request
-    afbRequest->afbClient = afbClient;
-    afbClient->count ++;
-
-    return 0;
-
-OnErrorExit:
-    fprintf(stderr, "LaunchCallRequest: Fail call %s//%s/%s&%s", afbClient->uri, afbRequest->api, apiVerb, afbRequest->query);
-    return 1;
-}
-
-static int LaunchCallRequest(afbClientT *afbClient, hookActionT action) {
-
-    pthread_t tid;
-    int err, idx;
-    afbRequestT **afbRequest= afbClient->request;
-
-    if (action == HOOK_INSTALL) {
-        // init waiting counting semaphore
-        if (sem_init(&afbClient->semaphore, 1, 0) == -1) {
-           fprintf(stderr, "LaunchCallRequest: Fail Semaphore Init: %s\n", afbClient->uri);
-        }
-
-        // Create a main loop
-        err = sd_event_default(&afbClient->sdLoop);
-        if (err < 0) {
-            fprintf(stderr, "LaunchCallRequest: Connection to default event loop failed: %s\n", strerror(-err));
-            goto OnErrorExit;
-        }
-
-        // start a thread with a mainloop to monitor Audio-Agent
-        err = pthread_create(&tid, NULL, &LoopInThread, afbClient);
-        if (err) goto OnErrorExit;
-
-        // connect the websocket wsj1 to the uri given by the first argument
-        afbClient->wsj1 = afb_ws_client_connect_wsj1(afbClient->sdLoop, afbClient->uri, &itf, afbClient);
-        if (afbClient->wsj1 == NULL) {
-            fprintf(stderr, "LaunchCallRequest: Connection to %s failed\n", afbClient->uri);
-            goto OnErrorExit;
-        }
-    }
-
-    // send call request to audio-agent asynchronously (respond with thread mainloop context)
-    for (idx = 0; afbRequest[idx] != NULL; idx++) {
-        err = CallWithTimeout(afbClient, afbRequest[idx], idx, action);
-        if (err) goto OnErrorExit;
-    }
-
-    // launch counter to keep track of waiting request call
-    afbClient->count=idx;
-
-    return 0;
-
-OnErrorExit:
-    return -1;
-}
-
-static int AlsaCloseHook(snd_pcm_hook_t *hook) {
-
-    afbClientT *afbClient = (afbClientT*) snd_pcm_hook_get_private (hook);
-
-    // launch call request and create a waiting mainloop thread
-    int err = LaunchCallRequest(afbClient, HOOK_CLOSE);
-    if (err < 0) {
-        fprintf (stderr, "PCM Fail to Enter Mainloop\n");
-        goto OnErrorExit;
-    }
-
-    // wait for all call request to return
-    sem_wait(&afbClient->semaphore);
-    if (afbClient->error) {
-        fprintf (stderr, "AlsaCloseHook: Notice exit before audio-4a response\n");
-        goto OnErrorExit;
-    }
-
-    if (afbClient->verbose) fprintf(stdout, "\nAlsaHook Close Success PCM=%s URI=%s\n", snd_pcm_name(afbClient->pcm), afbClient->uri);
-    return 0;
-
-OnErrorExit:
-    fprintf(stderr, "\nAlsaPcmHook Plugin Close Fail PCM=%s\n", snd_pcm_name(afbClient->pcm));
-    return 0;
-}
-
-// Function call when Plugin PCM is OPEN
-int PLUGIN_ENTRY_POINT (snd_pcm_t *pcm, snd_config_t *conf) {
-    snd_pcm_hook_t *h_close = NULL;
-    snd_config_iterator_t it, next;
-    afbClientT *afbClient = malloc(sizeof (afbClientT));
-    afbRequestT **afbRequest = malloc(MAX_API_CALL * sizeof(afbRequestT*));
-    afbEventT **afbEvent= malloc(MAX_EVT_CALL * sizeof(afbEventT*));
-    int err;
-
-    // start populating client handle
-    afbClient->pcm = pcm;
-    afbClient->verbose = 0;
-    afbClient->request = afbRequest;
-
-    // Get PCM arguments from asoundrc
-    snd_config_for_each(it, next, conf) {
-        snd_config_t *node = snd_config_iterator_entry(it);
-        const char *id;
-
-        // ignore comment en empty lines
-        if (snd_config_get_id(node, &id) < 0) continue;
-        if (strcmp(id, "comment") == 0 || strcmp(id, "hint") == 0) continue;
-
-        if (strcmp(id, "uri") == 0) {
-            const char *uri;
-            if (snd_config_get_string(node, &uri) < 0) {
-                SNDERR("Invalid String for %s", id);
-                goto OnErrorExit;
-            }
-            afbClient->uri=strdup(uri);
-            continue;
-        }
-
-        if (strcmp(id, "verbose") == 0) {
-            afbClient->verbose= snd_config_get_bool(node);
-            if (afbClient->verbose < 0) {
-                SNDERR("Invalid Boolean for %s", id);
-                goto OnErrorExit;
-            }
-            continue;
-        }
-
-        if (strcmp(id, "controls") == 0) {
-            const char *callConf, *callLabel;
-            snd_config_type_t ctype;
-            snd_config_iterator_t currentCall, follow;
-            snd_config_t *itemConf;
-            int callCount=0;
-
-            ctype = snd_config_get_type(node);
-            if (ctype != SND_CONFIG_TYPE_COMPOUND) {
-                snd_config_get_string(node, &callConf);
-                SNDERR("Invalid compound type for %s", callConf);
-                goto OnErrorExit;
-            }
-
-
-            // loop on each call
-            snd_config_for_each(currentCall, follow, node) {
-                snd_config_t *ctlconfig = snd_config_iterator_entry(currentCall);
-
-                // ignore empty line
-                if (snd_config_get_id(ctlconfig, &callLabel) < 0) continue;
-
-                // each clt should be a valid config compound
-                ctype = snd_config_get_type(ctlconfig);
-                if (ctype != SND_CONFIG_TYPE_COMPOUND) {
-                    snd_config_get_string(node, &callConf);
-                    SNDERR("Invalid call element for %s value=%s", callLabel, callConf);
-                    goto OnErrorExit;
-                }
-
-                // allocate an empty call request
-                afbRequest[callCount] = calloc(1, sizeof (afbRequestT));
-
-
-                err = snd_config_search(ctlconfig, "api", &itemConf);
-                if (!err) {
-                    const char *api;
-                    if (snd_config_get_string(itemConf, &api) < 0) {
-                        SNDERR("Invalid api string for %s", callLabel);
-                        goto OnErrorExit;
-                    }
-                    afbRequest[callCount]->api=strdup(api);
-                }
-
-                err = snd_config_search(ctlconfig, "request", &itemConf);
-                if (!err) {
-                    const char *verb;
-                    if (snd_config_get_string(itemConf, &verb) < 0) {
-                        SNDERR("Invalid open verb string %s", id);
-                        goto OnErrorExit;
-                    }
-                    afbRequest[callCount]->openVerb=strdup(verb);
-                }
-
-                err = snd_config_search(ctlconfig, "release", &itemConf);
-                if (!err) {
-                    const char *verb;
-                    if (snd_config_get_string(itemConf, &verb) < 0) {
-                        SNDERR("Invalid close verb string %s", id);
-                        goto OnErrorExit;
-                    }
-                    afbRequest[callCount]->closeVerb=strdup(verb);
-                }
-
-                err = snd_config_search(ctlconfig, "timeout", &itemConf);
-                if (!err) {
-                    if (snd_config_get_integer(itemConf, &afbRequest[callCount]->timeout) < 0) {
-                        SNDERR("Invalid timeout Integer %s", id);
-                        goto OnErrorExit;
-                    }
-                }
-
-                err = snd_config_search(ctlconfig, "args", &itemConf);
-                if (!err) {
-                    const char *query;
-                    if (snd_config_get_string(itemConf, &query) < 0) {
-                        SNDERR("Invalid args string %s", id);
-                        goto OnErrorExit;
-                    }
-                    // reserve enough space to ad closing message
-                    afbRequest[callCount]->length= strlen(query);
-                    afbRequest[callCount]->query = malloc (afbRequest[callCount]->length+strlen(CLOSING_MSG)+1);
-                    strcpy (afbRequest[callCount]->query, query);
-
-                    // cleanup string for json_tokener
-                    for (int idx = 0; query[idx] != '\0'; idx++) {
-                        if (query[idx] == '\'') afbRequest[callCount]->query[idx] = '"';
-                        else afbRequest[callCount]->query[idx] = query[idx];
-                    }
-                    json_object *queryJ = json_tokener_parse(afbRequest[callCount]->query);
-                    if (!queryJ) {
-                        SNDERR("Invalid Json %s args=%s should be args=\"{'tok1':'val1', 'tok2':'val2'}\" ", id, afbRequest[callCount]->query);
-                        goto OnErrorExit;
-                    }
-                }
-
-                // Simple check on call request validity
-                if (!afbRequest[callCount]->query)   afbRequest[callCount]->query= "";
-                if (!afbRequest[callCount]->timeout) afbRequest[callCount]->timeout=REQUEST_DEFAULT_TIMEOUT ;
-                if (!afbRequest[callCount]->openVerb || !afbRequest[callCount]->api) {
-                    SNDERR("Missing api/open(verb)/close(verb) %s in asoundrc", callLabel);
-                    goto OnErrorExit;
-                }
-
-                // move to next call if any
-                callCount ++;
-                if (callCount == MAX_API_CALL) {
-                    SNDERR("Too Many call MAX_API_CALL=%d", MAX_API_CALL);
-                    goto OnErrorExit;
-                }
-                afbRequest[callCount]=NULL; // afbRequest array is NULL terminated
-
-            }
-            continue;
-        }
-        if (strcmp(id, "events") == 0) {
-            const char *callConf, *callLabel;
-            snd_config_type_t ctype;
-            snd_config_iterator_t currentCall, follow;
-            int callCount=0;
-
-            ctype = snd_config_get_type(node);
-            if (ctype != SND_CONFIG_TYPE_COMPOUND) {
-                snd_config_get_string(node, &callConf);
-                SNDERR("Invalid compound type for %s", callConf);
-                goto OnErrorExit;
-            }
-
-
-            // loop on each call
-            snd_config_for_each(currentCall, follow, node) {
-                snd_config_t *ctlconfig = snd_config_iterator_entry(currentCall);
-                long sigval;
-
-                // ignore empty line
-                if (snd_config_get_id(ctlconfig, &callLabel) < 0) continue;
-
-                // each clt should be a valid config compound
-                ctype = snd_config_get_type(ctlconfig);
-                if (ctype != SND_CONFIG_TYPE_INTEGER) {
-                    snd_config_get_string(ctlconfig, &callConf);
-                    SNDERR("Invalid signal number for %s value=%s", callLabel, callConf);
-                    goto OnErrorExit;
-                }
-
-                // allocate an empty call request
-                snd_config_get_integer(ctlconfig, &sigval);
-                afbEvent[callCount] = calloc(1, sizeof (afbEventT));
-                afbEvent[callCount]->name=strdup(callLabel);
-                afbEvent[callCount]->signal= (int)sigval;
-
-                // move to next call if any
-                callCount ++;
-                if (callCount == MAX_EVT_CALL) {
-                    SNDERR("Too Many call MAX_EVT_CALL=%d", MAX_EVT_CALL);
-                    goto OnErrorExit;
-                }
-                afbEvent[callCount]=NULL; // afbEvent array is NULL terminated
-
-            }
-            continue;
-        }
-    }
-
-    if (afbClient->verbose) fprintf(stdout, "\nAlsaHook Install Start PCM=%s URI=%s\n", snd_pcm_name(afbClient->pcm), afbClient->uri);
-
-    err = snd_pcm_hook_add(&h_close, afbClient->pcm, SND_PCM_HOOK_TYPE_CLOSE, AlsaCloseHook, afbClient);
-    if (err < 0) goto OnErrorExit;
-
-    // launch call request and create a waiting mainloop thread
-    err = LaunchCallRequest(afbClient, HOOK_INSTALL);
-    if (err < 0) {
-        fprintf (stderr, "PCM Fail to Enter Mainloop\n");
-        goto OnErrorExit;
-    }
-
-    // wait for all call request to return
-    sem_wait(&afbClient->semaphore);
-    if (afbClient->error) {
-        fprintf (stderr, "PCM Authorisation Deny from AAAA Controller (AGL Advanced Audio Agent)\n");
-        goto OnErrorExit;
-    }
-
-    if (afbClient->verbose) fprintf(stdout, "\nAlsaHook Install Success PCM=%s URI=%s\n", snd_pcm_name(afbClient->pcm), afbClient->uri);
-    return 0;
-
-OnErrorExit:
-    fprintf(stderr, "\nAlsaPcmHook Plugin Install Fail PCM=%s\n", snd_pcm_name(pcm));
-    if (h_close)
-        snd_pcm_hook_remove(h_close);
-
-    return -EINVAL;
-}
-
diff --git a/hook-plugin/PolicyHookUnix.c b/hook-plugin/PolicyHookUnix.c
deleted file mode 100644
index 345ed57..0000000
--- a/hook-plugin/PolicyHookUnix.c
+++ /dev/null
@@ -1,562 +0,0 @@
-/*
- * 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.
- *
- * AfbCallBack (snd_ctl_hal_t *handle, int numid, void **response);
- *  AlsaHookInit is mandatory and called with numid=0
- *
- * Syntax in .asoundrc file
- *   CrlLabel    { cb MyFunctionName name "My_Second_Control" }
- *
- * Testing:
- *   aplay -DAlsaHook /usr/share/sounds/alsa/test.wav
- *
- * References:
- *  https://www.spinics.net/lists/alsa-devel/msg54235.html
- *  https://github.com/shivdasgujare/utilities/blob/master/nexuss/alsa-scenario-hook/src/alsa-wrapper.c
- */
-
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <alloca.h>
-
-#include <alsa/asoundlib.h>
-#include <alsa/conf.h>
-#include <alsa/pcm.h>
-
-#include <systemd/sd-event.h>
-#include <json-c/json.h>
-
-#include "afb/afb-wsj1.h"
-#include "afb/afb-ws-client.h"
-#include "afb/afb-proto-ws.h"
-
-#include <pthread.h>
-#include <semaphore.h>
-
-
-#define PLUGIN_ENTRY_POINT AlsaInstallHook
-    // Fulup Note: What ever you may find on Internet you should use
-    // SND_CONFIG_DLSYM_VERSION_HOOK and not SND_CONFIG_DLSYM_VERSION_HOOK
-    SND_DLSYM_BUILD_VERSION(PLUGIN_ENTRY_POINT, SND_PCM_DLSYM_VERSION)
-
-// this should be more than enough
-#define MAX_API_CALL 10
-#define MAX_EVT_CALL 10
-
-// timeout in ms
-#define REQUEST_DEFAULT_TIMEOUT 500
-#ifndef MAINLOOP_WATCHDOG
-#define MAINLOOP_WATCHDOG 100000
-#endif
-
-// closing message is added to query when PCM is closed
-#define CLOSING_MSG ",\"source\":-1}"
-
-// Currently not implemented
-#define UNUSED_ARG(x) UNUSED_ ## x __attribute__((__unused__))
-
-typedef struct {
-    const char *openVerb;
-    const char *closeVerb;
-    json_object *queryJ;
-    long timeout;
-
-    sd_event_source *evtSource;
-    char *callIdTag;
-    void *afbClient;
-} afbRequestT;
-
-typedef struct {
-    const char *name;
-    int  signal;
-} afbEventT;
-
-typedef struct {
-    char *name;
-    snd_pcm_t *pcm;
-    const char *uri;
-    struct afb_proto_ws *pws;
-    sd_event *sdLoop;
-    int verbose;
-    sem_t semaphore;
-    int count;
-    int error;
-    afbRequestT **request;
-    afbEventT **event;
-} afbClientT;
-
-
-static void *LoopInThread(void *handle) {
-    afbClientT *afbClient = (afbClientT*) handle;
-    int count=0;
-    int watchdog= MAINLOOP_WATCHDOG *1000;
-
-    /* loop until end */
-    for (;;) {
-
-        if (afbClient->verbose) printf("ON-MAINLOOP ping=%d\n", count++);
-        sd_event_run(afbClient->sdLoop, watchdog);
-    }
-
-    return NULL;
-}
-
-// lost connect with the AudioDaemon
-static void OnHangupCB(void *handle) {
-
-    afbClientT *afbClient = (afbClientT*) handle;
-    SNDERR("(Hoops) Lost Connection to %s", afbClient->uri);
-
-    // try to close PCM when impossible terminate client
-    int err = snd_pcm_close (afbClient->pcm);
-    if (err) exit(1);
-}
-
-typedef enum {
-    HOOK_INSTALL,
-    HOOK_CLOSE,
-} hookActionT;
-
-void OnEventCB(void *handle, const char *event, int evtid, struct json_object *eventJ) {
-    afbClientT *afbClient = (afbClientT*) handle;
-    afbEventT **afbEvent = afbClient->event;
-    json_object *dataJ, *tmpJ;
-    const char *label;
-    int value, done, index;
-
-    done= json_object_object_get_ex(eventJ,"data", &dataJ);
-    if (!done) {
-        SNDERR ("PCM_HOOK: uri=%s empty event label", afbClient->uri);
-        goto OnErrorExit;
-    }
-
-    json_object_object_get_ex(dataJ,"signal", &tmpJ);
-    label=json_object_get_string(tmpJ);
-
-    json_object_object_get_ex(dataJ,"value", &tmpJ);
-    value=json_object_get_int(tmpJ);
-
-    for (index=0; afbEvent[index]!= NULL; index++) {
-        if (!strcmp(afbEvent[index]->name, label)) break;
-    }
-
-    if (!afbEvent[index] || !afbEvent[index]->signal) {
-        SNDERR ("PCM_HOOK: Unsupported uri=%s label=%s", afbClient->uri, label);
-        return;
-    }
-
-    // send signal to self process
-    kill (getpid(), afbEvent[index]->signal);
-
-    if (afbClient->verbose) printf("ON-EVENT label=%s signal=%d\n", label, value);
-    return;
-
-OnErrorExit:
-    SNDERR("ON-EVENT %s(%s)\n", event, json_object_get_string(dataJ));
-    return;
-}
-
-static void OnSuccessCB(void* UNUSED_ARG(ctx) , void* handle, json_object* responseJ, const char* info) {
-    
-    afbRequestT *afbRequest= (afbRequestT*)handle;
-    afbClientT *afbClient=(afbClientT*)afbRequest->afbClient;
-
-    if (afbClient->verbose) printf("OnSuccessCB callid='%s' response='%s' info='%s'\n", afbRequest->callIdTag, json_object_get_string(responseJ), info);
-
-    // Cancel timeout for this request
-    sd_event_source_unref(afbRequest->evtSource);
-    free(afbRequest->callIdTag);
-
-    // When not more waiting call release semaphore
-    afbClient->count--;
-    if (afbClient->count == 0) {
-        if (afbClient->verbose) printf("OnSuccessCB No More Waiting Request\n");
-        afbClient->error=0;
-        sem_post (&afbClient->semaphore);
-    }
-}
-
-static void OnFailureCB(void* UNUSED_ARG(ctx), void* handle, const char *status, const char *info) {
-    
-    afbRequestT *afbRequest= (afbRequestT*)handle;
-    afbClientT *afbClient=(afbClientT*)afbRequest->afbClient;
-
-    if (afbClient->verbose) printf("OnFailureCB callid='%s' status='%s' info='%s'\n", afbRequest->callIdTag, status, info);
-
-    // Cancel timeout for this request
-    sd_event_source_unref(afbRequest->evtSource);
-    free(afbRequest->callIdTag);
-
-    afbClient->error=1;
-    sem_post (&afbClient->semaphore);
-}
-
-
-/* the callback interface for pws */
-static struct afb_proto_ws_client_itf itf = {
-    .on_reply_success = OnSuccessCB,
-    .on_reply_fail = OnFailureCB,
-    .on_event_create = NULL,
-    .on_event_remove = NULL,
-    .on_event_subscribe = NULL,
-    .on_event_unsubscribe = NULL,
-    .on_event_push = OnEventCB,
-    .on_event_broadcast = NULL,
-    .on_subcall = NULL,
-};
-
-int OnTimeoutCB (sd_event_source* source, uint64_t timer, void* handle) {
-    afbClientT *afbClient= (afbClientT*)handle;
-
-    SNDERR("\nON-TIMEOUT Call Request Fail URI=%s\n", afbClient->uri);
-
-    // Close PCM and release waiting client
-    afbClient->error=1;
-    sem_post (&afbClient->semaphore);
-
-    return 0;
-}
-
-// Call AGL binder asynchronously by with a timeout
-static int CallWithTimeout(afbClientT *afbClient, afbRequestT *afbRequest, int count, hookActionT action) {
-    uint64_t usec;
-    const char * apiVerb;
-    int err;
-
-    // create a unique tag for request
-    (void) asprintf(&afbRequest->callIdTag, "%d:%s", count, afbRequest->openVerb);
-
-    // create a timer with ~250us accuracy
-    sd_event_now(afbClient->sdLoop, CLOCK_MONOTONIC, &usec);
-    sd_event_add_time(afbClient->sdLoop, &afbRequest->evtSource, CLOCK_MONOTONIC, usec+afbRequest->timeout*1000, 250, OnTimeoutCB, afbClient);
-
-
-    // on PCM close replace last '}' by CLOSING_MSG
-    if (action == HOOK_CLOSE) apiVerb= afbRequest->closeVerb;
-    else apiVerb= afbRequest->openVerb;
-
-    // release action is optional
-    if (apiVerb) {
-        char * sessionId;
-        (void) asprintf(&sessionId, "alsa-hook-pid:%d", getpid());
-        if (afbClient->verbose) printf("CALL-REQUEST verb=%s tag=%s\n", apiVerb, afbRequest->callIdTag);
-        err = afb_proto_ws_client_call(afbClient->pws, apiVerb, afbRequest->queryJ, sessionId, afbRequest);
-        if (err < 0 ) goto OnErrorExit;        
-    }
-    // save client handle in request
-    afbRequest->afbClient = afbClient;
-    afbClient->count ++;
-
-    return 0;
-
-OnErrorExit:
-    fprintf(stderr, "LaunchCallRequest: Fail call %s//%s&%s", afbClient->uri, apiVerb, json_object_get_string(afbRequest->queryJ));
-    return 1;
-}
-
-static int LaunchCallRequest(afbClientT *afbClient, hookActionT action) {
-
-    pthread_t tid;
-    int err, idx;
-    afbRequestT **afbRequest= afbClient->request;
-
-    if (action == HOOK_INSTALL) {
-        // init waiting counting semaphore
-        if (sem_init(&afbClient->semaphore, 1, 0) == -1) {
-           fprintf(stderr, "LaunchCallRequest: Fail Semaphore Init: %s\n", afbClient->uri);
-        }
-
-        // Create a main loop
-        err = sd_event_default(&afbClient->sdLoop);
-        if (err < 0) {
-            fprintf(stderr, "LaunchCallRequest: Connection to default event loop failed: %s\n", strerror(-err));
-            goto OnErrorExit;
-        }
-
-        // start a thread with a mainloop to monitor Audio-Agent
-        err = pthread_create(&tid, NULL, &LoopInThread, afbClient);
-        if (err) goto OnErrorExit;
-        
-	afbClient->pws = afb_ws_client_connect_api(afbClient->sdLoop, afbClient->uri, &itf, afbClient);
-	if (afbClient->pws == NULL) {
-            fprintf(stderr, "LaunchCallRequest: Connection to %s failed\n", afbClient->uri);
-            goto OnErrorExit;
-	}
-        
-        // register hanghup callback
-        afb_proto_ws_on_hangup(afbClient->pws, OnHangupCB);
-    }
-
-    // send call request to audio-agent asynchronously (respond with thread mainloop context)
-    for (idx = 0; afbRequest[idx] != NULL; idx++) {
-        err = CallWithTimeout(afbClient, afbRequest[idx], idx, action);
-        if (err) goto OnErrorExit;
-    }
-
-    // launch counter to keep track of waiting request call
-    afbClient->count=idx;
-
-    return 0;
-
-OnErrorExit:
-    return -1;
-}
-
-static int AlsaCloseHook(snd_pcm_hook_t *hook) {
-
-    afbClientT *afbClient = (afbClientT*) snd_pcm_hook_get_private (hook);
-
-    // launch call request and create a waiting mainloop thread
-    int err = LaunchCallRequest(afbClient, HOOK_CLOSE);
-    if (err < 0) {
-        fprintf (stderr, "PCM Fail to Enter Mainloop\n");
-        goto OnErrorExit;
-    }
-
-    // wait for all call request to return
-    sem_wait(&afbClient->semaphore);
-    if (afbClient->error) {
-        fprintf (stderr, "AlsaCloseHook: Notice exit before audio-4a response\n");
-        goto OnErrorExit;
-    }
-
-    if (afbClient->verbose) fprintf(stdout, "\nAlsaHook Close Success PCM=%s URI=%s\n", snd_pcm_name(afbClient->pcm), afbClient->uri);
-    return 0;
-
-OnErrorExit:
-    fprintf(stderr, "\nAlsaPcmHook Plugin Close Fail PCM=%s\n", snd_pcm_name(afbClient->pcm));
-    return 0;
-}
-
-// Function call when Plugin PCM is OPEN
-int PLUGIN_ENTRY_POINT (snd_pcm_t *pcm, snd_config_t *conf) {
-    snd_pcm_hook_t *h_close = NULL;
-    snd_config_iterator_t it, next;
-    afbClientT *afbClient = malloc(sizeof (afbClientT));
-    afbRequestT **afbRequest = malloc(MAX_API_CALL * sizeof(afbRequestT*));
-    afbEventT **afbEvent= malloc(MAX_EVT_CALL * sizeof(afbEventT*));
-    int err;
-
-    // start populating client handle
-    afbClient->pcm = pcm;
-    afbClient->name= strdup(snd_pcm_name(pcm));
-    afbClient->verbose = 0;
-    afbClient->request = afbRequest;
-
-    // Get PCM arguments from asoundrc
-    snd_config_for_each(it, next, conf) {
-        snd_config_t *node = snd_config_iterator_entry(it);
-        const char *id;
-
-        // ignore comment en empty lines
-        if (snd_config_get_id(node, &id) < 0) continue;
-        if (strcmp(id, "comment") == 0 || strcmp(id, "hint") == 0) continue;
-
-        if (strcmp(id, "ws-client") == 0) {
-            const char *uri;
-            if (snd_config_get_string(node, &uri) < 0) {
-                SNDERR("Invalid String for %s", id);
-                goto OnErrorExit;
-            }
-            afbClient->uri=strdup(uri);
-            continue;
-        }
-
-        if (strcmp(id, "verbose") == 0) {
-            afbClient->verbose= snd_config_get_bool(node);
-            if (afbClient->verbose < 0) {
-                SNDERR("Invalid Boolean for %s", id);
-                goto OnErrorExit;
-            }
-            continue;
-        }
-
-        if (strcmp(id, "controls") == 0) {
-            const char *callConf, *callLabel;
-            snd_config_type_t ctype;
-            snd_config_iterator_t currentCall, follow;
-            snd_config_t *itemConf;
-            int callCount=0;
-
-            ctype = snd_config_get_type(node);
-            if (ctype != SND_CONFIG_TYPE_COMPOUND) {
-                snd_config_get_string(node, &callConf);
-                SNDERR("Invalid compound type for %s", callConf);
-                goto OnErrorExit;
-            }
-            
-            // loop on each call
-            snd_config_for_each(currentCall, follow, node) {
-                snd_config_t *ctlconfig = snd_config_iterator_entry(currentCall);
-
-                // ignore empty line
-                if (snd_config_get_id(ctlconfig, &callLabel) < 0) continue;
-
-                // each clt should be a valid config compound
-                ctype = snd_config_get_type(ctlconfig);
-                if (ctype != SND_CONFIG_TYPE_COMPOUND) {
-                    snd_config_get_string(node, &callConf);
-                    SNDERR("Invalid call element for %s value=%s", callLabel, callConf);
-                    goto OnErrorExit;
-                }
-
-                // allocate an empty call request
-                afbRequest[callCount] = calloc(1, sizeof (afbRequestT));
-
-                err = snd_config_search(ctlconfig, "request", &itemConf);
-                if (!err) {
-                    const char *verb;
-                    if (snd_config_get_string(itemConf, &verb) < 0) {
-                        SNDERR("Invalid open verb string %s", id);
-                        goto OnErrorExit;
-                    }
-                    afbRequest[callCount]->openVerb=strdup(verb);
-                }
-
-                err = snd_config_search(ctlconfig, "release", &itemConf);
-                if (!err) {
-                    const char *verb;
-                    if (snd_config_get_string(itemConf, &verb) < 0) {
-                        SNDERR("Invalid close verb string %s", id);
-                        goto OnErrorExit;
-                    }
-                    afbRequest[callCount]->closeVerb=strdup(verb);
-                }
-
-                err = snd_config_search(ctlconfig, "timeout", &itemConf);
-                if (!err) {
-                    if (snd_config_get_integer(itemConf, &afbRequest[callCount]->timeout) < 0) {
-                        SNDERR("Invalid timeout Integer %s", id);
-                        goto OnErrorExit;
-                    }
-                }
-
-                err = snd_config_search(ctlconfig, "args", &itemConf);
-                if (!err) {
-                    char *query;
-                    if (snd_config_get_string(itemConf, (const char**) &query) < 0) {
-                        SNDERR("Invalid args string %s", id);
-                        goto OnErrorExit;
-                    }
-
-                    // cleanup string for json_tokener
-                    for (int idx = 0; query[idx] != '\0'; idx++) {
-                        if (query[idx] == '\'') query[idx] = '"';
-                    }
-                    afbRequest[callCount]->queryJ = json_tokener_parse(query);
-                    if (!afbRequest[callCount]->queryJ) {
-                        SNDERR("Invalid Json %s args=%s should be args=\"{'tok1':'val1', 'tok2':'val2'}\" ", id, query);
-                        goto OnErrorExit;
-                    }
-                }
-
-                // Simple check on call request validity
-                if (!afbRequest[callCount]->timeout) afbRequest[callCount]->timeout=REQUEST_DEFAULT_TIMEOUT ;
-                if (!afbRequest[callCount]->openVerb || !afbRequest[callCount]->closeVerb) {
-                    SNDERR("Missing open(verb)/close(verb) %s in asoundrc", callLabel);
-                    goto OnErrorExit;
-                }
-
-                // move to next call if any
-                callCount ++;
-                if (callCount == MAX_API_CALL) {
-                    SNDERR("Too Many call MAX_API_CALL=%d", MAX_API_CALL);
-                    goto OnErrorExit;
-                }
-                afbRequest[callCount]=NULL; // afbRequest array is NULL terminated
-
-            }
-            continue;
-        }
-        if (strcmp(id, "events") == 0) {
-            const char *callConf, *callLabel;
-            snd_config_type_t ctype;
-            snd_config_iterator_t currentCall, follow;
-            int callCount=0;
-
-            ctype = snd_config_get_type(node);
-            if (ctype != SND_CONFIG_TYPE_COMPOUND) {
-                snd_config_get_string(node, &callConf);
-                SNDERR("Invalid compound type for %s", callConf);
-                goto OnErrorExit;
-            }
-
-
-            // loop on each call
-            snd_config_for_each(currentCall, follow, node) {
-                snd_config_t *ctlconfig = snd_config_iterator_entry(currentCall);
-                long sigval;
-
-                // ignore empty line
-                if (snd_config_get_id(ctlconfig, &callLabel) < 0) continue;
-
-                // each clt should be a valid config compound
-                ctype = snd_config_get_type(ctlconfig);
-                if (ctype != SND_CONFIG_TYPE_INTEGER) {
-                    snd_config_get_string(ctlconfig, &callConf);
-                    SNDERR("Invalid signal number for %s value=%s", callLabel, callConf);
-                    goto OnErrorExit;
-                }
-
-                // allocate an empty call request
-                snd_config_get_integer(ctlconfig, &sigval);
-                afbEvent[callCount] = calloc(1, sizeof (afbEventT));
-                afbEvent[callCount]->name=strdup(callLabel);
-                afbEvent[callCount]->signal= (int)sigval;
-
-                // move to next call if any
-                callCount ++;
-                if (callCount == MAX_EVT_CALL) {
-                    SNDERR("Too Many call MAX_EVT_CALL=%d", MAX_EVT_CALL);
-                    goto OnErrorExit;
-                }
-                afbEvent[callCount]=NULL; // afbEvent array is NULL terminated
-
-            }
-            continue;
-        }
-    }
-
-    if (afbClient->verbose) fprintf(stdout, "\nAlsaHook Install Start PCM=%s URI=%s\n", snd_pcm_name(afbClient->pcm), afbClient->uri);
-
-    err = snd_pcm_hook_add(&h_close, afbClient->pcm, SND_PCM_HOOK_TYPE_CLOSE, AlsaCloseHook, afbClient);
-    if (err < 0) goto OnErrorExit;
-
-    // launch call request and create a waiting mainloop thread
-    err = LaunchCallRequest(afbClient, HOOK_INSTALL);
-    if (err < 0) {
-        fprintf (stderr, "PCM Fail to Enter Mainloop\n");
-        goto OnErrorExit;
-    }
-
-    // wait for all call request to return
-    sem_wait(&afbClient->semaphore);
-    if (afbClient->error) {
-        fprintf (stderr, "PCM Authorisation Deny from AAAA Controller (AGL Advanced Audio Agent)\n");
-        goto OnErrorExit;
-    }
-
-    if (afbClient->verbose) fprintf(stdout, "\nAlsaHook Install Success PCM=%s URI=%s\n", afbClient->name, afbClient->uri);
-    return 0;
-
-OnErrorExit:
-    fprintf(stderr, "\nAlsaPcmHook Plugin Policy Control Fail PCM=%s\n", afbClient->name);
-    if (h_close)
-        snd_pcm_hook_remove(h_close);
-
-    return -EINVAL;
-}
-
diff --git a/hook-plugin/README.md b/hook-plugin/README.md
deleted file mode 100644
index 3846e0b..0000000
--- a/hook-plugin/README.md
+++ /dev/null
@@ -1,121 +0,0 @@
-Alsa-Hook-Plugin
-
-Object: Provide a Hook on Alsa PCM to check permission again AGL Advance Audio Agent
-Status: Release Candidate
-Author: Fulup Ar Foll fulup@iot.bzh
-Date  : August-2017
-
-Functionalities:
- - Execute a set of unix/ws RPC request again AGL binders to allow/deny access
- - Keep websocket open in an idependant thread in order to monitor event received from AGL audio agent
-
-Installation
- - Alsaplugins are typically search in /usr/share/alsa-lib. Nevertheless a full path might be given
- - This plugin implement a hook on a slave PCM. Typically this slave PCM is a dedicated virtual channel (eg: navigation, emergency,...)
- - Config should be place in ~/.asoundrc (see config sample in PROJECT_ROOT/conf.d/alsa)
-
-Test
- - Install a full .asoundrc from conf.d/project/alsa.d
- - speaker-test -DMyNavigationHook -c2 -twav
-
-Config
-```
-# 
-# Author: Fulup Ar Foll
-# Object: PCM hook type 
-#
-# Test  :  Note: Jabra_USB=hw:v1340
-#  Check SoundCard ==> speaker-test -Dhw:v1340   -c2 -twav
-#  Check MixerPCM  ==> speaker-test -DSpeakers   -c2 -twav 
-#  Check SoftVol   ==> speaker-test -DMusicPCM   -c2 -twav 
-#  Check Plugin    ==> speaker-test -DMultimedia -c2 -twav
-#  MultiMedia aplay -DDMyNavPCM /usr/share/sounds/alsa/test.wav
-#
-# Bug/Feature: when softvol control is initialised from plugin and not
-#    from AGL binding. At 1st run ctl has invalid TLV and cannot be
-#    use. Bypass Solution: 
-#     * start audio-binder before playing sound (binding create control before softvol plugin)
-#     * run a dummy aplay -DMyNavPCM "" to get a clean control
-#
-# References: https://www.spinics.net/lists/alsa-devel/msg54235.html
-# --------------------------------------------------------------------
-
-# ------------------------------------------------------
-# Mixer PCM allow to play multiple stream simultaneously
-# ------------------------------------------------------
-pcm.Speakers { 
-    type dmix            
-    slave {pcm "hw:v1340"}  #Jabra Solmate 1
-    ipc_key 1001          # ipc_key should be unique to each dmix
-} 
-
-# -----------------------------------------------------
-#  Register ControllerHookPlugin (ToiBeFix fullpath)
-# -----------------------------------------------------
-pcm_hook_type.CtlHookPlugin {
-    install "AlsaInstallHook" 
-    lib "/home/fulup/Workspace/Audio-4a/alsa-4a/build/hook-plugin/policy_hook_tcp.so"
-    #lib "/home/fulup/Workspace/Audio-4a/alsa-4a/build/hook-plugin/policy_hook_unix.so"
-}
-
-
-# -------------------------------------------------------
-# Define one Audio Virtual Channel per Audio Roles
-# -------------------------------------------------------
-pcm.MusicPCM {
-    type softvol
-
-    # Point Slave on HOOK for policies control
-    slave.pcm "Speakers"
-
-    # name should match with HAL definition
-    control.name  "Playback Multimedia"
-}
-
-# ----------------------------------------------------
-# Define one hooked PCM channel per Audio Roles
-# ----------------------------------------------------
-pcm.Multimedia {
-    type hooks
-    slave {pcm "MusicPCM"}
-    hooks.0 {
-        comment "Defined used hook sharelib and provide arguments/config to install func"
-        type "CtlHookPlugin"
-        hook_args {
-
-            # print few log messages (default false)
-            verbose true 
-
-            # uri to audio-4a policy engine
-            uri="ws://localhost:1234/api?token='audio-agent-token'"
-            #ws-client="unix:/var/tmp/pol4a"
-
-            # api subcall to request a role
-            controls {
-                # Request authorisation to write on navigation
-                navigation-ctl {
-                    request "multimedia-role"
-                    release "release-role"
-                    args    "{'uid':'alsa-hook-navigation'}"
-                }
-            }
-            events {    # map event reception to self generated signal
-                pause  30
-                resume 31
-                stop   3
-            }
-        }
-    }
-}
-
-
-```
-
-NOTE:
-
-* Hook plugin is loaded by Alsa libasound within client context. It inherits client process attributes, as UID/GID and
-SMACK label when running on AGL. The smack label is control by AGL security framework.
-As a result a control request succeeds only when client application permission match requested audio role inside Cynara security database.
-
-* Hook plugin keep a connection with the Audio-Agent until PCM is closed by the application. This connection allow the
-Audio-Agent to send events. eg: pause, quit, mute, ...
\ No newline at end of file
diff --git a/nbproject/configurations.xml b/nbproject/configurations.xml
index 8977e53..07e636e 100644
--- a/nbproject/configurations.xml
+++ b/nbproject/configurations.xml
@@ -13,6 +13,10 @@
         <in>Alsa-SetGet.c</in>
         <in>Alsa-Ucm.c</in>
       </df>
+      <df name="alsa-hook">
+        <in>PolicyAlsaHook.c</in>
+        <in>PolicyHookTcp.c</in>
+      </df>
       <df name="Audio-Common">
         <in>audio-common.c</in>
         <in>filescan-utils.c</in>
@@ -70,9 +74,6 @@
         <in>HighLevelApiConf.c</in>
         <in>HighLevelBinding.c</in>
       </df>
-      <df name="hook-plugin">
-        <in>PolicyHookCb.c</in>
-      </df>
       <df name="MostVolume">
         <df name="external">
           <in>ConnectionInfo.cpp</in>
@@ -126,10 +127,10 @@
       <makefileType>
         <makeTool>
           <buildCommandWorkingDir>build</buildCommandWorkingDir>
-          <buildCommand>${MAKE} -f Makefile install</buildCommand>
+          <buildCommand>${MAKE} -f Makefile</buildCommand>
           <cleanCommand>${MAKE} -f Makefile clean</cleanCommand>
           <executablePath>build/CMakeFiles/feature_tests.bin</executablePath>
-          <cTool flags="0">
+          <cTool flags="2">
           </cTool>
         </makeTool>
         <preBuild>
@@ -141,9 +142,7 @@
       <item path="Audio-Common/audio-common.c" ex="false" tool="0" flavor2="3">
         <cTool flags="2">
           <incDir>
-            <pElem>../../../opt/include/afb</pElem>
             <pElem>Audio-Common</pElem>
-            <pElem>/usr/include/json-c</pElem>
             <pElem>build/Audio-Common</pElem>
           </incDir>
         </cTool>
@@ -151,10 +150,7 @@
       <item path="Audio-Common/filescan-utils.c" ex="false" tool="0" flavor2="3">
         <cTool flags="0">
           <incDir>
-            <pElem>../../../opt/include</pElem>
-            <pElem>../../../opt/include/alsa</pElem>
             <pElem>/usr/include/p11-kit-1</pElem>
-            <pElem>/usr/include/json-c</pElem>
             <pElem>/usr/include/lua5.3</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>build/Audio-Common</pElem>
@@ -182,7 +178,6 @@
         <cTool flags="2">
           <incDir>
             <pElem>Audio-Common</pElem>
-            <pElem>/usr/include/json-c</pElem>
             <pElem>build/Audio-Common</pElem>
           </incDir>
         </cTool>
@@ -194,10 +189,7 @@
       <item path="Controller-afb/ctl-binding.c" ex="false" tool="0" flavor2="3">
         <cTool flags="0">
           <incDir>
-            <pElem>../../../opt/include</pElem>
-            <pElem>../../../opt/include/alsa</pElem>
             <pElem>/usr/include/p11-kit-1</pElem>
-            <pElem>/usr/include/json-c</pElem>
             <pElem>/usr/include/lua5.3</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
@@ -225,10 +217,7 @@
       <item path="Controller-afb/ctl-dispatch.c" ex="false" tool="0" flavor2="3">
         <cTool flags="0">
           <incDir>
-            <pElem>../../../opt/include</pElem>
-            <pElem>../../../opt/include/alsa</pElem>
             <pElem>/usr/include/p11-kit-1</pElem>
-            <pElem>/usr/include/json-c</pElem>
             <pElem>/usr/include/lua5.3</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
@@ -256,10 +245,7 @@
       <item path="Controller-afb/ctl-lua.c" ex="false" tool="0" flavor2="3">
         <cTool flags="0">
           <incDir>
-            <pElem>../../../opt/include</pElem>
-            <pElem>../../../opt/include/alsa</pElem>
             <pElem>/usr/include/p11-kit-1</pElem>
-            <pElem>/usr/include/json-c</pElem>
             <pElem>/usr/include/lua5.3</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
@@ -287,9 +273,7 @@
       <item path="Controller-afb/ctl-misc.c" ex="false" tool="0" flavor2="3">
         <cTool flags="2">
           <incDir>
-            <pElem>../../../opt/include/afb</pElem>
             <pElem>Controller-afb</pElem>
-            <pElem>/usr/include/json-c</pElem>
             <pElem>build/Controller-afb</pElem>
           </incDir>
         </cTool>
@@ -297,10 +281,7 @@
       <item path="Controller-afb/ctl-plugin-sample.c" ex="false" tool="0" flavor2="3">
         <cTool flags="0">
           <incDir>
-            <pElem>../../../opt/include</pElem>
-            <pElem>../../../opt/include/alsa</pElem>
             <pElem>/usr/include/p11-kit-1</pElem>
-            <pElem>/usr/include/json-c</pElem>
             <pElem>/usr/include/lua5.3</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
@@ -328,10 +309,7 @@
       <item path="Controller-afb/ctl-timer.c" ex="false" tool="0" flavor2="3">
         <cTool flags="0">
           <incDir>
-            <pElem>../../../opt/include</pElem>
-            <pElem>../../../opt/include/alsa</pElem>
             <pElem>/usr/include/p11-kit-1</pElem>
-            <pElem>/usr/include/json-c</pElem>
             <pElem>/usr/include/lua5.3</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
@@ -533,13 +511,60 @@
           </incDir>
         </cTool>
       </item>
-      <folder path="0/Common">
+      <item path="alsa-hook/PolicyAlsaHook.c" ex="false" tool="0" flavor2="3">
+        <cTool flags="0">
+          <incDir>
+            <pElem>/usr/include/json-c</pElem>
+            <pElem>../../../opt/include</pElem>
+            <pElem>/usr/include/p11-kit-1</pElem>
+            <pElem>../../../opt/include/alsa</pElem>
+            <pElem>build/alsa-hook</pElem>
+          </incDir>
+          <preprocessorList>
+            <Elem>CONTROL_MAXPATH_LEN=255</Elem>
+            <Elem>MAX_LINEAR_DB_SCALE=24</Elem>
+            <Elem>MAX_SND_CARD=16</Elem>
+            <Elem>NATIVE_LINUX</Elem>
+            <Elem>PIC</Elem>
+            <Elem>TLV_BYTE_SIZE=256</Elem>
+            <Elem>policy_alsa_hook_EXPORTS</Elem>
+          </preprocessorList>
+        </cTool>
+      </item>
+      <item path="alsa-hook/PolicyHookTcp.c" ex="false" tool="0" flavor2="3">
+        <cTool flags="2">
+          <incDir>
+            <pElem>alsa-hook</pElem>
+            <pElem>../../../opt/include/alsa</pElem>
+            <pElem>/usr/include/json-c</pElem>
+            <pElem>../../../opt/include/afb</pElem>
+            <pElem>../../../opt/include</pElem>
+            <pElem>build/alsa-hook</pElem>
+          </incDir>
+        </cTool>
+      </item>
+      <folder path="0/Audio-Common">
         <cTool>
           <incDir>
+            <pElem>alsa-hook</pElem>
+            <pElem>../../../opt/include/alsa</pElem>
+            <pElem>/usr/include/json-c</pElem>
+            <pElem>../../../opt/include/afb</pElem>
             <pElem>../../../opt/include</pElem>
+            <pElem>build/alsa-hook</pElem>
+          </incDir>
+        </cTool>
+      </folder>
+      <folder path="0/Common">
+        <cTool>
+          <incDir>
+            <pElem>alsa-hook</pElem>
             <pElem>../../../opt/include/alsa</pElem>
-            <pElem>/usr/include/p11-kit-1</pElem>
             <pElem>/usr/include/json-c</pElem>
+            <pElem>../../../opt/include/afb</pElem>
+            <pElem>../../../opt/include</pElem>
+            <pElem>build/alsa-hook</pElem>
+            <pElem>/usr/include/p11-kit-1</pElem>
             <pElem>/usr/include/lua5.3</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
@@ -567,13 +592,28 @@
           </preprocessorList>
         </cTool>
       </folder>
-      <folder path="0/HAL-afb">
+      <folder path="0/Controller-afb">
         <cTool>
           <incDir>
+            <pElem>alsa-hook</pElem>
+            <pElem>../../../opt/include/alsa</pElem>
+            <pElem>/usr/include/json-c</pElem>
+            <pElem>../../../opt/include/afb</pElem>
             <pElem>../../../opt/include</pElem>
+            <pElem>build/alsa-hook</pElem>
+          </incDir>
+        </cTool>
+      </folder>
+      <folder path="0/HAL-afb">
+        <cTool>
+          <incDir>
+            <pElem>alsa-hook</pElem>
             <pElem>../../../opt/include/alsa</pElem>
-            <pElem>/usr/include/p11-kit-1</pElem>
             <pElem>/usr/include/json-c</pElem>
+            <pElem>../../../opt/include/afb</pElem>
+            <pElem>../../../opt/include</pElem>
+            <pElem>build/alsa-hook</pElem>
+            <pElem>/usr/include/p11-kit-1</pElem>
             <pElem>/usr/include/lua5.3</pElem>
           </incDir>
           <preprocessorList>
@@ -595,7 +635,6 @@
       <folder path="0/HAL-afb/HAL-interface">
         <cTool>
           <incDir>
-            <pElem>../../../opt/include/afb</pElem>
             <pElem>HAL-afb/HAL-interface</pElem>
           </incDir>
         </cTool>
@@ -606,7 +645,6 @@
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
             <pElem>build/HAL-afb/HAL-plugin</pElem>
-            <pElem>../../../opt/include/afb</pElem>
             <pElem>HAL-afb/HAL-plugin</pElem>
           </incDir>
           <preprocessorList>
@@ -620,7 +658,6 @@
       <folder path="0/HAL-afb/HDA-intel">
         <cTool>
           <incDir>
-            <pElem>../../../opt/include/afb</pElem>
             <pElem>HAL-afb/HDA-intel</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>HAL-afb/HAL-interface</pElem>
@@ -632,7 +669,6 @@
         <cTool>
           <incDir>
             <pElem>HAL-afb/Jabra-Solemate</pElem>
-            <pElem>../../../opt/include/afb</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>HAL-afb/HAL-interface</pElem>
             <pElem>build/HAL-afb/Jabra-Solemate</pElem>
@@ -642,7 +678,6 @@
       <folder path="0/HAL-afb/Scarlett-Focusrite">
         <cTool>
           <incDir>
-            <pElem>../../../opt/include/afb</pElem>
             <pElem>HAL-afb/Scarlett-Focusrite</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>HAL-afb/HAL-interface</pElem>
@@ -656,7 +691,6 @@
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
             <pElem>build/HAL-afb/HAL-plugin</pElem>
-            <pElem>../../../opt/include/afb</pElem>
             <pElem>HAL-afb/Unicens-USB</pElem>
           </incDir>
           <preprocessorList>
@@ -670,15 +704,17 @@
       <folder path="0/HighLevel-afb">
         <cTool>
           <incDir>
-            <pElem>../../../opt/include</pElem>
+            <pElem>alsa-hook</pElem>
             <pElem>../../../opt/include/alsa</pElem>
-            <pElem>/usr/include/p11-kit-1</pElem>
             <pElem>/usr/include/json-c</pElem>
+            <pElem>../../../opt/include/afb</pElem>
+            <pElem>../../../opt/include</pElem>
+            <pElem>build/alsa-hook</pElem>
+            <pElem>/usr/include/p11-kit-1</pElem>
             <pElem>/usr/include/lua5.3</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
             <pElem>build/HAL-afb/HAL-plugin</pElem>
-            <pElem>../../../opt/include/afb</pElem>
             <pElem>HighLevel-afb</pElem>
             <pElem>Shared-Interface</pElem>
             <pElem>build/HighLevel-afb</pElem>
@@ -704,10 +740,13 @@
       <folder path="0/MostVolume">
         <cTool>
           <incDir>
-            <pElem>../../../opt/include</pElem>
+            <pElem>alsa-hook</pElem>
             <pElem>../../../opt/include/alsa</pElem>
-            <pElem>/usr/include/p11-kit-1</pElem>
             <pElem>/usr/include/json-c</pElem>
+            <pElem>../../../opt/include/afb</pElem>
+            <pElem>../../../opt/include</pElem>
+            <pElem>build/alsa-hook</pElem>
+            <pElem>/usr/include/p11-kit-1</pElem>
             <pElem>/usr/include/lua5.3</pElem>
             <pElem>Audio-Common</pElem>
             <pElem>build/Controller-afb</pElem>
@@ -739,30 +778,6 @@
           </incDir>
         </cTool>
       </folder>
-      <folder path="0/hook-plugin">
-        <cTool>
-          <incDir>
-            <pElem>/usr/include/json-c</pElem>
-            <pElem>../../../opt/include</pElem>
-            <pElem>/usr/include/p11-kit-1</pElem>
-            <pElem>../../../opt/include/alsa</pElem>
-            <pElem>build/hook-plugin</pElem>
-          </incDir>
-          <preprocessorList>
-            <Elem>CONTROL_MAXPATH_LEN=255</Elem>
-            <Elem>MAX_LINEAR_DB_SCALE=24</Elem>
-            <Elem>MAX_SND_CARD=16</Elem>
-            <Elem>NATIVE_LINUX</Elem>
-            <Elem>PIC</Elem>
-            <Elem>TLV_BYTE_SIZE=256</Elem>
-            <Elem>policy_hook_cb_EXPORTS</Elem>
-          </preprocessorList>
-        </cTool>
-      </folder>
-      <item path="hook-plugin/PolicyHookCb.c" ex="false" tool="0" flavor2="3">
-        <cTool flags="0">
-        </cTool>
-      </item>
     </conf>
     <conf name="Local_Alias" type="0">
       <toolsSet>