add policy and reference implementation

1 files changed, 1090 insertions, 28 deletions

diff --git a/src/ahl-policy.c b/src/ahl-policy.c
index fa050af..110f7e9 100644
--- a/src/ahl-policy.c
+++ b/src/ahl-policy.c
@@ -18,8 +18,11 @@
 #define _GNU_SOURCE
 #include <stdio.h>
 #include <string.h>
-
+#include <stdbool.h>
 #include "ahl-binding.h"
+#include "wrap-json.h"
+
+#define MAX_ACTIVE_STREAM_POLICY 30
 
 // This file provides example of custom, business logic driven policy actions that can affect behavior of the high level
 // TODO: Currently only isolated in separate source file. Objective is to make this to at least a shared lib plug-in (shared C context)
@@ -27,65 +30,895 @@
 
 extern AHLCtxT g_AHLCtx; // TODO: Cannot stay if moved to external module 
 
-static void Add_Endpoint_Property_Numeric( EndpointInfoT * io_pEndpointInfo, char * in_pPropertyName, int in_iPropertyValue)
+typedef struct StreamPolicyInfo {
+    int             RolePriority;
+    int             iVolume; 
+    int             iVolumeSavedMute; 
+    streamID_t      streamID;
+    InterruptedBehaviorT interruptBehavior;                
+} StreamPolicyInfoT;
+
+ 
+typedef struct EndPointPolicyInfo {
+    int             endpointKey;  
+    endpointID_t    endpointID;
+    EndpointTypeT   type;    
+    GArray *        streamInfo; //List of playing or duck stream at a given endpoint
+} EndPointPolicyInfoT;
+
+typedef enum SystemState {
+    SYSTEM_STARTUP = 0,     // Startup
+    SYSTEM_SHUTDOWN,        // ShutDown
+    SYSTEM_NORMAL,          // Normal
+    SYSTEM_LOW_POWER,       // Low Power, save mode
+    SYSTEM_MAXVALUE         // Enum count, keep at the end
+} SystemStateT;
+
+
+// Global Policy Local context
+typedef struct PolicyLocalCtx {
+    GArray *     pSourceEndpoints; // List of Source Endpoint with playing stream or interrupted stream
+    GArray *     pSinkEndpoints;   // List of Sink Endpoint with playing stream or interrupted stream
+    GArray *     pStreamOpenPerPolicy; //List of number of openstream per policy
+    GArray *     pMaxStreamOpenPerPolicy; //List of number of openstream per policy
+    GArray *     pVolDuckPerPolicy; //List of number of openstream per policy
+    SystemStateT systemState;
+} PolicyLocalCtxT;
+
+PolicyLocalCtxT g_PolicyCtx;
+
+
+//Helper Functions
+static void Add_Endpoint_Property_Double( EndpointInfoT * io_pEndpointInfo, char * in_pPropertyName, double in_dPropertyValue)
+{
+    json_object * propValueJ = json_object_new_double(in_dPropertyValue);
+    g_hash_table_insert(io_pEndpointInfo->pPropTable, in_pPropertyName, propValueJ);
+}
+
+
+static void Add_Endpoint_Property_Int( EndpointInfoT * io_pEndpointInfo, char * in_pPropertyName, int in_iPropertyValue)
 {
     json_object * propValueJ = json_object_new_int(in_iPropertyValue);
     g_hash_table_insert(io_pEndpointInfo->pPropTable, in_pPropertyName, propValueJ);
 }
 
-static void Add_Endpoint_Property_String( EndpointInfoT * io_pEndpointInfo, char * in_pPropertyName, char * in_pPropertyValue)
+static void Add_Endpoint_Property_String( EndpointInfoT * io_pEndpointInfo, char * in_pPropertyName, const char * in_pPropertyValue)
 {
     json_object * propValueJ = json_object_new_string(in_pPropertyValue);
     g_hash_table_insert(io_pEndpointInfo->pPropTable, in_pPropertyName, propValueJ);
 }
 
-int Policy_OpenStream(char *pAudioRole, EndpointTypeT endpointType, endpointID_t endpointID)
+static int PolicySetVolume(EndpointInfoT * pEndpointInfo, int iVolume)
+{
+    
+    // Using audio role available from endpoint to target the right HAL control (build string based on convention)
+    GString * gsHALControlName;    
+    switch(pEndpointInfo->deviceURIType)
+    {
+        case DEVICEURITYPE_ALSA_HW:
+            gsHALControlName  = g_string_new("Master_Playback_Volume");    
+            break;        
+        case DEVICEURITYPE_ALSA_DMIX:
+        case DEVICEURITYPE_ALSA_DSNOOP:
+        case DEVICEURITYPE_ALSA_PLUG:
+        case DEVICEURITYPE_ALSA_SOFTVOL:            
+            gsHALControlName  = g_string_new(pEndpointInfo->gsAudioRole->str);
+            g_string_append(gsHALControlName,"_Vol"); // Or _Vol for direct control (no ramping)    
+            break;
+        default:
+            //Set volume to zero for display purpose only.
+            //Not support yet
+            AFB_WARNING("Endpoint %s is not support Device Type and can't set volume",pEndpointInfo->gsDeviceName->str);
+            break;
+    }
+
+    // Set endpoint volume using HAL services (leveraging ramps etc.)
+    json_object *j_response, *j_query = NULL;
+ 
+    // Package query
+    int err = wrap_json_pack(&j_query,"{s:s,s:i}","label",gsHALControlName->str, "val",iVolume);
+    if (err) 
+    {
+        AFB_ERROR("Invalid query for HAL ctlset: %s",json_object_to_json_string(j_query));    
+        return err;
+    }
+
+    //TODO implement Volume limitation based on policy
+
+    // Set the volume using the HAL
+    err = afb_service_call_sync(pEndpointInfo->gsHALAPIName->str, "ctlset", j_query, &j_response);
+    if (err) 
+    {
+        AFB_ERROR("Could not ctlset on HAL: %s",pEndpointInfo->gsHALAPIName->str);    
+        return err;
+    }
+    AFB_DEBUG("HAL ctlset response=%s", json_object_to_json_string(j_response));
+ 
+     // Package event data
+    json_object * eventDataJ = NULL;
+    err = wrap_json_pack(&eventDataJ,"{s:i,s:i,s:i}","endpoint_id", pEndpointInfo->endpointID,"endpoint_type",pEndpointInfo->type,"value",iVolume);
+    if (err) 
+    {
+        AFB_ERROR("Invalid event data for volume event, Invalid event data for volume event: %s",json_object_to_json_string(eventDataJ));    
+        return err;
+    }
+    afb_event_push(g_AHLCtx.policyCtx.volumeEvent,eventDataJ);
+
+    pEndpointInfo->iVolume = iVolume;
+
+    return 0; 
+}
+
+
+static int PolicySetVolumeMute(EndpointInfoT * pEndpointInfo, int iVolume)
+{
+    
+    // Using audio role available from endpoint to target the right HAL control (build string based on convention)
+    GString * gsHALControlName;    
+    switch(pEndpointInfo->deviceURIType)
+    {
+        case DEVICEURITYPE_ALSA_HW:
+            gsHALControlName  = g_string_new("Master_Playback_Volume");    
+            break;        
+        case DEVICEURITYPE_ALSA_DMIX:
+        case DEVICEURITYPE_ALSA_DSNOOP:
+        case DEVICEURITYPE_ALSA_PLUG:
+        case DEVICEURITYPE_ALSA_SOFTVOL:            
+            gsHALControlName  = g_string_new(pEndpointInfo->gsAudioRole->str);
+            g_string_append(gsHALControlName,"_Vol"); // Or _Vol for direct control (no ramping)    
+            break;
+        default:
+            //Set volume to zero for display purpose only.
+            //Not support yet
+            AFB_WARNING("Endpoint %s is not support Device Type and can't set volume",pEndpointInfo->gsDeviceName->str);
+            break;
+    }
+
+    // Set endpoint volume using HAL services (leveraging ramps etc.)
+    json_object *j_response, *j_query = NULL;
+ 
+    // Package query
+    int err = wrap_json_pack(&j_query,"{s:s,s:i}","label",gsHALControlName->str, "val",iVolume);
+    if (err) 
+    {
+        AFB_ERROR("Invalid query for HAL ctlset: %s",json_object_to_json_string(j_query));    
+        return err;
+    }
+
+    //TODO implement Volume limitation based on policy
+
+    // Set the volume using the HAL
+    err = afb_service_call_sync(pEndpointInfo->gsHALAPIName->str, "ctlset", j_query, &j_response);
+    if (err) 
+    {
+        AFB_ERROR("Could not ctlset on HAL: %s",pEndpointInfo->gsHALAPIName->str);    
+        return err;
+    }
+    AFB_DEBUG("HAL ctlset response=%s", json_object_to_json_string(j_response));
+ 
+     // Package event data
+    json_object * eventDataJ = NULL;
+    err = wrap_json_pack(&eventDataJ,"{s:i,s:i,s:i}","endpoint_id", pEndpointInfo->endpointID,"endpoint_type",pEndpointInfo->type,"value",iVolume);
+    if (err) 
+    {
+        AFB_ERROR("Invalid event data for volume event, Invalid event data for volume event: %s",json_object_to_json_string(eventDataJ));    
+        return err;
+    }
+    afb_event_push(g_AHLCtx.policyCtx.volumeEvent,eventDataJ);    
+
+    return 0; 
+}
+
+
+static int PolicySetVolumeRamp(EndpointInfoT * pEndpointInfo, int iVolume)
 {
-    // TODO: Example rule -> when system is in shutdown or low power mode, no audio stream can be opened (return AHL_POLICY_REJECT)
+    
+    // Using audio role available from endpoint to target the right HAL control (build string based on convention)
+    GString * gsHALControlName;        
+    switch(pEndpointInfo->deviceURIType)
+    {
+        case DEVICEURITYPE_ALSA_HW:
+            gsHALControlName  = g_string_new("Master_Ramp");    
+            break;        
+        case DEVICEURITYPE_ALSA_DMIX:
+        case DEVICEURITYPE_ALSA_DSNOOP:
+        case DEVICEURITYPE_ALSA_PLUG:
+        case DEVICEURITYPE_ALSA_SOFTVOL:            
+            gsHALControlName  = g_string_new(pEndpointInfo->gsAudioRole->str);
+            g_string_append(gsHALControlName,"_Ramp"); // Or _Vol for direct control (no ramping)    
+            break;
+        default:
+            //Set volume to zero for display purpose only.
+            //Not support yet
+            AFB_WARNING("Endpoint %s is not a support Device Type and can't set volume",pEndpointInfo->gsDeviceName->str);
+            break;
+    }
+
+    // Set endpoint volume using HAL services (leveraging ramps etc.)
+    json_object *j_response, *j_query = NULL;
+ 
+    // Package query
+    int err = wrap_json_pack(&j_query,"{s:s,s:i}","label",gsHALControlName->str, "val",iVolume);
+    if (err) 
+    {
+        AFB_WARNING("Invalid query for HAL ctlset: %s",json_object_to_json_string(j_query));    
+        return err;
+    }
+
+    //TODO implement Volume limitation based on policy
+
+    // Set the volume using the HAL
+    err = afb_service_call_sync(pEndpointInfo->gsHALAPIName->str, "ctlset", j_query, &j_response);
+    if (err) 
+    {
+        AFB_WARNING("Could not ctlset on HAL: %s",pEndpointInfo->gsHALAPIName->str);    
+        return err;
+    }
+    AFB_DEBUG("HAL ctlset response=%s", json_object_to_json_string(j_response));
+ 
+     // Package event data
+    json_object * eventDataJ = NULL;
+    err = wrap_json_pack(&eventDataJ,"{s:i,s:i,s:i, s:s}","endpoint_id", pEndpointInfo->endpointID,"endpoint_type",pEndpointInfo->type,"value",iVolume, "audio_role",gsHALControlName->str);
+    if (err) 
+    {
+        AFB_WARNING("Invalid event data for volume event, Invalid event data for volume event: %s",json_object_to_json_string(eventDataJ));    
+        return err;
+    }
+    afb_event_push(g_AHLCtx.policyCtx.volumeEvent,eventDataJ);
+
+    pEndpointInfo->iVolume = iVolume;
+
+    return 0; 
+}
+
+static int PolicyGetVolume(EndpointInfoT * pEndpointInfo)
+{
+    
+
+    GString * gsHALControlName;
+
+    // Using audio role available from endpoint to target the right HAL control (build string based on convention)        
+    switch(pEndpointInfo->deviceURIType)
+    {
+        case DEVICEURITYPE_ALSA_HW:
+            gsHALControlName  = g_string_new("Master_Playback_Volume");    
+            break;        
+        case DEVICEURITYPE_ALSA_DMIX:
+        case DEVICEURITYPE_ALSA_DSNOOP:
+        case DEVICEURITYPE_ALSA_PLUG:
+        case DEVICEURITYPE_ALSA_SOFTVOL:            
+            gsHALControlName  = g_string_new(pEndpointInfo->gsAudioRole->str);
+            g_string_append(gsHALControlName,"_Vol"); // Or _Vol for direct control (no ramping)    
+            break;
+        default:
+            //Set volume to zero for display purpose only.
+            //Not support yet
+            pEndpointInfo->iVolume = 0;
+            AFB_WARNING("Endpoint %s is a support Device Type and can't get volume",pEndpointInfo->gsDeviceName->str);
+            break;
+    }
+
+    // Set endpoint volume using HAL services (leveraging ramps etc.)
+    json_object *j_response, *j_query = NULL;
+ 
+    // Package query
+    int err = wrap_json_pack(&j_query,"{s:s}","label",gsHALControlName->str);
+    if (err) 
+    {
+        AFB_WARNING("Invalid query for HAL ctlset: %s",json_object_to_json_string(j_query));    
+        return err;
+    }
+
+    //TODO implement Volume limitation based on policy
+
+    // Set the volume using the HAL
+    err = afb_service_call_sync(pEndpointInfo->gsHALAPIName->str, "ctlget", j_query, &j_response);
+    if (err) 
+    {
+        AFB_WARNING("Could not ctlset on HAL: %s",pEndpointInfo->gsHALAPIName->str);    
+        return err;
+    }
+    AFB_DEBUG("HAL ctlget response=%s", json_object_to_json_string(j_response));
+ 
+    // Parse response
+    json_object * jRespObj = NULL;
+    json_object_object_get_ex(j_response, "response", &jRespObj);
+    json_object * jVal = NULL;
+    int val1 = 0, val2 = 0; // Why 2 values?    
+
+    json_object_object_get_ex(jRespObj, "val", &jVal);
+    int nbElement = json_object_array_length(jVal);
+    if(nbElement == 2)
+    {          
+        err = wrap_json_unpack(jVal, "[ii]", &val1, &val2);
+        if (err) {
+            AFB_ERROR("Volume retrieve failed Could not retrieve volume value -> %s", json_object_get_string(jVal));
+            return -1;
+        }
+        
+    }
+    else
+    {    
+        err = wrap_json_unpack(jVal, "[i]", &val1);
+        if (err) {
+            AFB_ERROR("Volume retrieve failed Could not retrieve volume value -> %s", json_object_get_string(jVal));
+            return -1;
+        }
+        
+    }
+        
+    pEndpointInfo->iVolume = val1;
+
+    return 0; 
+}
+
+static void PolicyPostStateEvent(struct afb_event streamStateEvent, StreamEventT eventState)
+{
+    
+    json_object * eventDataJ = NULL;
+    int err = wrap_json_pack(&eventDataJ,"{s:i}","stateEvent",eventState);
+    if (err) 
+    {
+        AFB_ERROR("Invalid event data for stream state event: %s",json_object_to_json_string(eventDataJ));
+    }
+    else                    
+    {
+        afb_event_push(streamStateEvent,eventDataJ);
+    }         
+}
+
+//This function is based on ALSA right now but it could be adapt to support other framework like pulseaudio or gstreamer
+static int PolicyGenEndPointKey(EndpointInfoT *pEndPointInfo)
+{
+    return (pEndPointInfo->type << 24)|(pEndPointInfo->alsaInfo.cardNum << 16)|(pEndPointInfo->alsaInfo.deviceNum << 8)|(pEndPointInfo->alsaInfo.subDeviceNum);    
+}
+
+static EndPointPolicyInfoT *PolicySearchEndPoint(EndpointTypeT type, int key)
+{   
+    GArray *pcurEndpointArray = NULL;
+
+    if(type==ENDPOINTTYPE_SINK)
+    {
+        pcurEndpointArray = g_PolicyCtx.pSinkEndpoints;
+    }
+    else
+    {
+        pcurEndpointArray = g_PolicyCtx.pSourceEndpoints;
+    }
+
+    for(int i=0; i<pcurEndpointArray->len; i++)
+    {
+        EndPointPolicyInfoT * pCurEndpoint = &g_array_index(pcurEndpointArray,EndPointPolicyInfoT,i);    
+
+        if(pCurEndpoint->endpointKey == key)
+        {
+            return pCurEndpoint;
+        }
+    }
+
+    return NULL;
+}
+
+static StreamPolicyInfoT *PolicySearchStream(EndPointPolicyInfoT * pCurEndpoint, int streamID)
+{   
+
+    for(int i=0; i<pCurEndpoint->streamInfo->len; i++)
+    {
+        StreamPolicyInfoT * pCurStream = &g_array_index(pCurEndpoint->streamInfo,StreamPolicyInfoT,i);    
+
+        if(pCurStream->streamID == streamID)
+        {
+            return pCurStream;
+        }
+    }
+
+    return NULL;
+}
+
+
+static StreamInfoT * PolicyGetActiveStream(streamID_t in_streamID)
+{
+    int iNumActiveStreams = g_AHLCtx.policyCtx.pActiveStreams->len;
+    StreamInfoT * pStreamInfo = NULL;
+    for ( int i = 0; i < iNumActiveStreams ; i++ ) {
+        StreamInfoT * pCurStreamInfo = &g_array_index(g_AHLCtx.policyCtx.pActiveStreams,StreamInfoT,i);
+        if (pCurStreamInfo->streamID == in_streamID){
+            pStreamInfo = pCurStreamInfo;
+            break;
+        }
+    }
+    return pStreamInfo;
+}
+
+
+static int PolicyFindRoleIndex( const char * in_pAudioRole)
+{
+    int index = -1; // Not found
+    for (int i = 0; i < g_AHLCtx.policyCtx.iNumberRoles; i++)
+    {
+        GString gs = g_array_index( g_AHLCtx.policyCtx.pAudioRoles, GString, i );
+        if ( strcasecmp(gs.str,in_pAudioRole) == 0 )
+        {
+            index = i;
+            break;
+        }
+    }
+    return index;
+}
+
+static int PolicyRemoveStream(EndPointPolicyInfoT *pCurrEndPointPolicy, int RemoveIndex)
+{
+    //Validate 
+    if(RemoveIndex >= pCurrEndPointPolicy->streamInfo->len)
+    {
+        return -1;
+
+    }
+
+
+    g_array_remove_index(pCurrEndPointPolicy->streamInfo,RemoveIndex);
+
+    if(pCurrEndPointPolicy->streamInfo->len == 0)
+    {
+
+        //Free streem
+        g_array_free(pCurrEndPointPolicy->streamInfo,TRUE);
+        pCurrEndPointPolicy->streamInfo = NULL;
+        
+        GArray *pcurEndpointArray = NULL;
+
+        if(pCurrEndPointPolicy->type==ENDPOINTTYPE_SINK)
+        {
+            pcurEndpointArray = g_PolicyCtx.pSinkEndpoints;
+        }
+        else
+        {
+            pcurEndpointArray = g_PolicyCtx.pSourceEndpoints;
+        }
+
+        for(int i=0; i<pcurEndpointArray->len; i++)
+        {
+            EndPointPolicyInfoT * pCurEndpoint = &g_array_index(pcurEndpointArray,EndPointPolicyInfoT,i);  
+            if(pCurEndpoint->endpointKey == pCurrEndPointPolicy->endpointKey)
+            {
+                g_array_remove_index(pcurEndpointArray, i);
+                return 0;
+            }            
+        }
+    }
+    
+    return 0;
+}
+
+static int PolicyRunningIdleTransition(EndPointPolicyInfoT *pCurrEndPointPolicy,StreamInfoT * pStreamInfo)
+{
+    if(pCurrEndPointPolicy == NULL)
+    {
+        //Remove endpoint
+        AFB_ERROR("No Active Endpoint has been found");
+        return -1; 
+    }
+
+    if(pCurrEndPointPolicy->streamInfo->len>0)
+    {
+        //Search for the matching stream
+        int iNumStream = pCurrEndPointPolicy->streamInfo->len;
+        for(int i=0; i<iNumStream; i++)
+        {
+            StreamPolicyInfoT currentPolicyStreamInfo = g_array_index(pCurrEndPointPolicy->streamInfo,StreamPolicyInfoT,i);
+            if(currentPolicyStreamInfo.streamID == pStreamInfo->streamID)
+            {
+
+                //Unduck case
+                if((i==(pCurrEndPointPolicy->streamInfo->len-1)) && (pCurrEndPointPolicy->streamInfo->len > 1)) 
+                {
+                    //remove the current stream
+                    g_array_remove_index(pCurrEndPointPolicy->streamInfo, i);
+
+                    //check the last element(Akways highest priority)
+                    StreamPolicyInfoT HighPriorityStreamInfo = g_array_index(pCurrEndPointPolicy->streamInfo,StreamPolicyInfoT,pCurrEndPointPolicy->streamInfo->len-1);
+
+                    //Get Stream Info
+                    StreamInfoT * pInterruptStreamInfo = PolicyGetActiveStream(HighPriorityStreamInfo.streamID);
+                    if (pInterruptStreamInfo == NULL) {
+                        AFB_ERROR("Stream not found, Specified stream not currently active stream_id -> %d",HighPriorityStreamInfo.streamID);
+                        return -1; 
+                    }
+
+                    int err;
+                    switch(currentPolicyStreamInfo.interruptBehavior)
+                    {
+                        case AHL_INTERRUPTEDBEHAVIOR_CONTINUE:                                    
+                            //unduck and set Volume back to original value
+                            err= PolicySetVolumeRamp(pInterruptStreamInfo->pEndpointInfo, HighPriorityStreamInfo.iVolume);
+                            if(err)                
+                            {
+                                AFB_ERROR("Endpoint:%s Set Volume return with errorcode%i", pInterruptStreamInfo->pEndpointInfo->gsDeviceName->str, err);                        
+                                return -1; 
+                            }                                            
+                            break;
+                        case AHL_INTERRUPTEDBEHAVIOR_PAUSE:
+                            pInterruptStreamInfo->streamState = STREAM_STATE_RUNNING;
+                            PolicyPostStateEvent(pInterruptStreamInfo->streamStateEvent,STREAM_EVENT_RESUME);                        
+                            break;
+
+                        case AHL_INTERRUPTEDBEHAVIOR_CANCEL:
+                            AFB_ERROR("StreamID with Cancel InterruptedBehavior can't be unInterrupted");
+                            return -1; 
+                            break;
+                        default:
+                            AFB_ERROR("Unsupported Intterupt Behavior");
+                            return -1; 
+                            break;
+                    } 
+
+                }
+                else                                                
+                {
+                    //remove the current stream
+                    PolicyRemoveStream(pCurrEndPointPolicy, i);
+                }                        
+                return 0;
+            }
+
+        }  
+    }
+
+    AFB_ERROR("StreamID does not match any playing stream");
+    return -1;
+}
+
+static int PolicyIdleRunningTransition(EndPointPolicyInfoT *pCurrEndPointPolicy, StreamInfoT * pStreamInfo, int AudioRoleIndex, int EndPointKey)
+{
+    int stream_priority;
+    int ori_key_pos;
+    
+    bool bKeyFound=g_hash_table_lookup_extended(g_AHLCtx.policyCtx.pRolePriority,pStreamInfo->pEndpointInfo->gsAudioRole->str,&ori_key_pos,&stream_priority);                                        
+    if(bKeyFound==false)
+    {
+        AFB_ERROR("Can't find stream priority, request will be rejected");
+        return -1; 
+    }
+    
+    //stream_priority = GPOINTER_TO_INT(value);
+
+
+    InterruptedBehaviorT InterruptBehavior = g_array_index(g_AHLCtx.policyCtx.pInterruptBehavior,InterruptedBehaviorT,AudioRoleIndex);
+    int err;
+    if(pCurrEndPointPolicy == NULL) //No stream is playing on this endpoint
+    {
+        EndPointPolicyInfoT newEndPointPolicyInfo ;
+        StreamPolicyInfoT newStreamPolicyInfo;
+
+        //create EndPoint and add playing stream
+        newEndPointPolicyInfo.endpointKey = EndPointKey;
+        newEndPointPolicyInfo.endpointID = pStreamInfo->pEndpointInfo->endpointID;
+        newEndPointPolicyInfo.type = pStreamInfo->pEndpointInfo->type;
+        newEndPointPolicyInfo.streamInfo = g_array_new(FALSE,TRUE,sizeof(StreamPolicyInfoT));
+
+        newStreamPolicyInfo.RolePriority = stream_priority;
+        newStreamPolicyInfo.iVolume = pStreamInfo->pEndpointInfo->iVolume;
+        newStreamPolicyInfo.streamID = pStreamInfo->streamID;                    
+        newStreamPolicyInfo.interruptBehavior = InterruptBehavior;
+
+        g_array_append_val(newEndPointPolicyInfo.streamInfo, newStreamPolicyInfo);                    
+        g_array_append_val(g_PolicyCtx.pSinkEndpoints, newEndPointPolicyInfo);
+        
+
+        /*
+        int *pVolume = &g_array_index(g_PolicyCtx.pVolInitPerPolicy,int,AudioRoleIndex);
+        pStreamInfo->pEndpointInfo->iVolume = *pVolume;
+        
+        err= PolicySetVolumeRamp(pStreamInfo->pEndpointInfo, pStreamInfo->pEndpointInfo->iVolume);
+        if(err)                
+        {
+            AFB_ERROR("Endpoint:%s Set Volume return with errorcode%i",pStreamInfo->pEndpointInfo->gsDeviceName->str, err);                        
+            return err; 
+        } */  
+    }
+    else
+    {
+        //Currently contains playing or duck stream
+        if(pCurrEndPointPolicy->streamInfo->len > 0)
+        {
+            //check the last element 
+            StreamPolicyInfoT HighPriorityStreamInfo = g_array_index(pCurrEndPointPolicy->streamInfo,StreamPolicyInfoT,pCurrEndPointPolicy->streamInfo->len-1);
+            if((stream_priority) >= HighPriorityStreamInfo.RolePriority)
+            {
+                //Get Stream Info
+                StreamInfoT * pInterruptStreamInfo = PolicyGetActiveStream(HighPriorityStreamInfo.streamID);
+                if (pInterruptStreamInfo == NULL) {
+                    AFB_ERROR("Stream not found Specified stream not currently active stream_id -> %d",HighPriorityStreamInfo.streamID);
+                    return -1;
+                }
+
+                switch(InterruptBehavior)
+                {
+                    case AHL_INTERRUPTEDBEHAVIOR_CONTINUE:
+                        //Save the current Volume and set the docking volume
+                        HighPriorityStreamInfo.iVolume = pInterruptStreamInfo->pEndpointInfo->iVolume;
+                        
+                        int *pVolume = &g_array_index(g_PolicyCtx.pVolDuckPerPolicy,int,AudioRoleIndex);                        
+                        err= PolicySetVolumeRamp(pInterruptStreamInfo->pEndpointInfo, *pVolume);
+                        if(err)                
+                        {
+                            AFB_ERROR("Endpoint:%s Set Volume return with errorcode%i", pInterruptStreamInfo->pEndpointInfo->gsDeviceName->str, err);                        
+                            return -1; 
+                        }                                            
+                        break;
+                    case AHL_INTERRUPTEDBEHAVIOR_PAUSE:
+                        pInterruptStreamInfo->streamState = STREAM_STATE_PAUSED;
+                        PolicyPostStateEvent(pInterruptStreamInfo->streamStateEvent,STREAM_EVENT_PAUSE);                        
+                        break;
+
+                    case AHL_INTERRUPTEDBEHAVIOR_CANCEL:
+                        pInterruptStreamInfo->streamState = STREAM_STATE_IDLE;
+                        PolicyPostStateEvent(pInterruptStreamInfo->streamStateEvent,STREAM_EVENT_STOP);                        
+                        g_array_remove_index(pCurrEndPointPolicy->streamInfo, pCurrEndPointPolicy->streamInfo->len-1);
+
+                        break;
+                    default:
+                        AFB_ERROR("Unsupported Intterupt Behavior");
+                        return AHL_POLICY_REJECT; 
+                        break;
+
+                } 
+
+                //Add the playing stream at index 0
+                StreamPolicyInfoT newStreamPolicyInfo;
+                newStreamPolicyInfo.RolePriority = stream_priority;
+                newStreamPolicyInfo.iVolume = pStreamInfo->pEndpointInfo->iVolume;
+                newStreamPolicyInfo.streamID = pStreamInfo->streamID;                    
+                newStreamPolicyInfo.interruptBehavior = InterruptBehavior;
+                
+                //Insert at the end, become highest priority streamID
+                g_array_append_val(pCurrEndPointPolicy->streamInfo, newStreamPolicyInfo);  
+                
+                err= PolicySetVolumeRamp(pStreamInfo->pEndpointInfo, pStreamInfo->pEndpointInfo->iVolume);
+                if(err)                
+                {
+                    AFB_ERROR("Endpoint:%s Set Volume return with errorcode%i", pInterruptStreamInfo->pEndpointInfo->gsDeviceName->str, err);                        
+                    return err; 
+                }                          
+
+            }
+            else
+            {
+                //Higher Priority Stream is playing
+                AFB_NOTICE("Higher Priority Stream is playing");
+                return -1; 
+            }
+
+        }
+        else
+        {
+            //Remove endpoint
+            AFB_ERROR("Active EndPoint is not attached to  any active stream");
+            return -1; 
+
+        }                    
+    }
+
+    return 0;
+}
+
+//Policy API
+int Policy_OpenStream(StreamInfoT * pStreamInfo)
+{
+    // Example rule -> when system is in shutdown or low power mode, no audio stream can be opened (return AHL_POLICY_REJECT)
+    // Should receive event from lower level layer
+    if(g_PolicyCtx.systemState != SYSTEM_NORMAL)
+    {
+        return AHL_POLICY_REJECT;
+    } 
+        
+   //Implement Policy open stream rules, limit to a certain number of stream open based on policy
+   int index = PolicyFindRoleIndex(pStreamInfo->pEndpointInfo->gsAudioRole->str);
+   int *pNumberOpenStream = &g_array_index(g_PolicyCtx.pStreamOpenPerPolicy,int,index);
+   int MaxNumberOpenStream = g_array_index(g_PolicyCtx.pMaxStreamOpenPerPolicy,int,index);
+
+    *pNumberOpenStream +=1;
+    if((*pNumberOpenStream) > MaxNumberOpenStream )
+    {
+        return AHL_POLICY_REJECT;
+    }
+
+    //Get actual Volume
+    int err=PolicyGetVolume(pStreamInfo->pEndpointInfo);
+    if(err != 0)
+    {
+        AFB_WARNING("Can't get volume of Endpoint %s",pStreamInfo->pEndpointInfo->gsDeviceName->str);        
+    }
 
     return AHL_POLICY_ACCEPT; 
 }
 
-int Policy_CloseStream(streamID_t streamID)
+int Policy_CloseStream(StreamInfoT * pStreamInfo)
 {
-    // For completeness, unlikely to have any policy rules here
+    //Decrement the number of openstream
+    int index = PolicyFindRoleIndex(pStreamInfo->pEndpointInfo->gsAudioRole->str);
+    int *pNumberOpenStream = &g_array_index(g_PolicyCtx.pStreamOpenPerPolicy,int,index);
+
+    *pNumberOpenStream -= 1;
 
     return AHL_POLICY_ACCEPT; 
 }
 
-int  Policy_SetStreamState(streamID_t streamID, StreamStateT streamState )
+int  Policy_SetStreamState(StreamInfoT * pStreamInfo, int AudioRoleIndex, StreamStateT streamState)
 {
+    //DONE
     // If higher priority audio role stream requires audio ducking (and un-ducking) of other streams (e.g. navigation ducks entertainment)
-    // TODO: Could potentially provide a fairly generic system using interupt behavior information and audio role priority (implemented and can be customized here)
+    // Could potentially provide a fairly generic system using interupt behavior information and audio role priority (implemented and can be customized here)
     // Specific exception can also be
-
     // Source exclusion. E.g. When a source (e.g tuner) with same audio role as already active stream (e.g. media player) with same endpoint target, 
     // the former source is stopped (i.e. raise streamstate stop event)
-
-    // If source on communication role is active (e.g. handsfree call), activating entertainment sources is prohibited
-
-    // If handsfree or speech recognition (communication role) is started during entertainment playback, mute all entertainment streams (any endpoints except RSE)
-
+    // If source on communication role is active (e.g. handsfree call), activating entertainment sources is prohibited    
     // Startup or Shutdown audio stream mute entertainment (unmut when stream no longer active)
 
+    //TODO    
     // Optional: Mute endpoint before activation, unmute afterwards (after a delay?) to avoid noises
+    int err;
 
-
+    //Change of state
+    if(pStreamInfo->streamState != streamState)
+    {
+        //seach corresponding endpoint and gather information on it
+        int key = PolicyGenEndPointKey(pStreamInfo->pEndpointInfo);    
+        EndPointPolicyInfoT *pCurrEndPointPolicy = PolicySearchEndPoint(pStreamInfo->pEndpointInfo->type , key);
+    
+        switch(pStreamInfo->streamState)
+        {
+            case STREAM_STATE_IDLE:            
+                switch(streamState)
+                {
+                    case STREAM_STATE_RUNNING:
+                        err = PolicyIdleRunningTransition(pCurrEndPointPolicy, pStreamInfo, AudioRoleIndex, key);
+                        if(err)
+                        {
+                            return AHL_POLICY_REJECT;  
+                        }                        
+                        pStreamInfo->streamState = STREAM_STATE_RUNNING;          
+                        PolicyPostStateEvent(pStreamInfo->streamStateEvent,STREAM_EVENT_START); 
+                        break;
+                    case STREAM_STATE_PAUSED:
+                        err = PolicyIdleRunningTransition(pCurrEndPointPolicy, pStreamInfo, AudioRoleIndex, key);
+                        if(err)
+                        {
+                            return AHL_POLICY_REJECT;  
+                        }  
+                        pStreamInfo->streamState = STREAM_STATE_PAUSED;          
+                        PolicyPostStateEvent(pStreamInfo->streamStateEvent,STREAM_EVENT_PAUSE); 
+                        break;
+                    default:
+                        return AHL_POLICY_REJECT;  
+                        break;
+                }
+                break;
+            case STREAM_STATE_RUNNING:    
+                switch(streamState)
+                {
+                    case STREAM_STATE_IDLE:
+                        err = PolicyRunningIdleTransition(pCurrEndPointPolicy, pStreamInfo);
+                        if(err)
+                        {
+                            return AHL_POLICY_REJECT;  
+                        }                        
+                        pStreamInfo->streamState = STREAM_STATE_IDLE;          
+                        PolicyPostStateEvent(pStreamInfo->streamStateEvent,STREAM_EVENT_STOP);                                       
+                        break;
+                    case STREAM_STATE_PAUSED:
+                        pStreamInfo->streamState = STREAM_STATE_PAUSED;          
+                        PolicyPostStateEvent(pStreamInfo->streamStateEvent,STREAM_EVENT_PAUSE);                                       
+                        break;
+                    default:
+                        return AHL_POLICY_REJECT;  
+                        break;
+                }
+                break;
+            case STREAM_STATE_PAUSED:    
+                switch(streamState)
+                {
+                    case STREAM_STATE_IDLE:
+                        err = PolicyRunningIdleTransition(pCurrEndPointPolicy, pStreamInfo);
+                        if(err)
+                        {
+                            return AHL_POLICY_REJECT;  
+                        }                        
+                        pStreamInfo->streamState = STREAM_STATE_IDLE;          
+                        PolicyPostStateEvent(pStreamInfo->streamStateEvent,STREAM_EVENT_STOP);    
+                        break;
+                    case STREAM_STATE_RUNNING:
+                        pStreamInfo->streamState = STREAM_STATE_RUNNING;          
+                        PolicyPostStateEvent(pStreamInfo->streamStateEvent,STREAM_EVENT_RESUME); 
+                        break;                 
+                    default:
+                        return AHL_POLICY_REJECT;  
+                        break;
+                }
+                break;
+            default:
+                return AHL_POLICY_REJECT;  
+                break;
+        }      
+    }
     return AHL_POLICY_ACCEPT; 
 }
 
-int  Policy_SetStreamMute(streamID_t streamID, StreamMuteT streamMute)
+int  Policy_SetStreamMute(StreamInfoT * pStreamInfo, StreamMuteT streamMute)
 {
+    int err;
+  
+    if(streamMute == STREAM_MUTED)
+    {
+        err= PolicySetVolumeMute(pStreamInfo->pEndpointInfo, 0);
+        if(err)                
+        {
+            AFB_ERROR("Endpoint:%s Set Volume return with errorcode%i",pStreamInfo->pEndpointInfo->gsDeviceName->str, err);                        
+            return AHL_POLICY_REJECT;  
+        }   
+        PolicyPostStateEvent(pStreamInfo->streamStateEvent,STREAM_EVENT_MUTED); 
+    }
+    else
+    {
+        err= PolicySetVolumeMute(pStreamInfo->pEndpointInfo, pStreamInfo->pEndpointInfo->iVolume);
+        if(err)                
+        {
+            AFB_ERROR("Endpoint:%s Set Volume return with errorcode%i",pStreamInfo->pEndpointInfo->gsDeviceName->str, err);                        
+            return AHL_POLICY_REJECT;  
+        }   
+        PolicyPostStateEvent(pStreamInfo->streamStateEvent,STREAM_EVENT_UNMUTED); 
+
+
+    }
+
+    pStreamInfo->streamMute = streamMute;
+
     return AHL_POLICY_ACCEPT;
 }
 
-int Policy_SetVolume(EndpointTypeT endpointType, endpointID_t endpointID, char *volumeStr)
+int Policy_SetVolume(EndpointInfoT * f_pEndpointInfo, char *volumeStr)
 {
+
+    // TODO: Parse volume string to support increment/absolute/percent notation (or delegate to action / policy layer to interpret)
+    int vol = atoi(volumeStr);
+    
+    //Set the volume
+    int err = PolicySetVolumeRamp(f_pEndpointInfo, vol);
+    if (err) 
+    {
+        AFB_ERROR("Set Volume return with errorcode%i", err);    
+        return AHL_POLICY_REJECT;
+    }
+
     return AHL_POLICY_ACCEPT; 
 }
 
-int Policy_SetProperty(EndpointTypeT endpointType, endpointID_t endpointID, char *propertyName, char *propValueStr)
+int Policy_SetProperty(EndpointInfoT * f_pEndpointInfo, char *propertyName, json_object *propValue)
 {
+
+    gpointer *key_value=NULL;
+    key_value=g_hash_table_lookup(f_pEndpointInfo->pPropTable,propertyName);
+    if(key_value==NULL)
+    {
+        AFB_ERROR("Can't find property %s, request will be rejected", propertyName);
+        return AHL_POLICY_REJECT; 
+    }
+
+    // Object type detection for property value (string = state, numeric = property)
+    json_type jType = json_object_get_type(propValue);
+    switch (jType) {
+        case json_type_double:
+            Add_Endpoint_Property_Double(f_pEndpointInfo,propertyName,json_object_get_double(propValue));
+        case json_type_int:
+            Add_Endpoint_Property_Int(f_pEndpointInfo,propertyName,json_object_get_int(propValue));
+        case json_type_string:
+            Add_Endpoint_Property_String(f_pEndpointInfo,propertyName,json_object_get_string(propValue));
+            break;
+        default:
+            AFB_ERROR("Invalid property argument Property value not a valid json object query=%s", json_object_get_string(propValue ));
+            return AHL_POLICY_REJECT;
+    }
+
     return AHL_POLICY_ACCEPT;
 }
 
@@ -112,16 +945,16 @@ int Policy_AudioDeviceChange()
 int Policy_Endpoint_Property_Init(EndpointInfoT * io_EndpointInfo)
 {
     // Populate list of supported properties for specified endpoint (use helper functions)
-    // Setup initial values for all properties
+    // Setup initial values for all properties  GHashTabl
 
     // TODO: Switch on different known endpoints to populate different properties
 
     // Test example
-    Add_Endpoint_Property_Numeric(io_EndpointInfo,AHL_PROPERTY_EQ_LOW,3);
-    Add_Endpoint_Property_Numeric(io_EndpointInfo,AHL_PROPERTY_EQ_MID,0);
-    Add_Endpoint_Property_Numeric(io_EndpointInfo,AHL_PROPERTY_EQ_HIGH,6);
-    Add_Endpoint_Property_Numeric(io_EndpointInfo,AHL_PROPERTY_BALANCE,0);
-    Add_Endpoint_Property_Numeric(io_EndpointInfo,AHL_PROPERTY_FADE,30);
+    Add_Endpoint_Property_Int(io_EndpointInfo,AHL_PROPERTY_EQ_LOW,3);
+    Add_Endpoint_Property_Int(io_EndpointInfo,AHL_PROPERTY_EQ_MID,0);
+    Add_Endpoint_Property_Int(io_EndpointInfo,AHL_PROPERTY_EQ_HIGH,6);
+    Add_Endpoint_Property_Int(io_EndpointInfo,AHL_PROPERTY_BALANCE,0);
+    Add_Endpoint_Property_Int(io_EndpointInfo,AHL_PROPERTY_FADE,30);
     Add_Endpoint_Property_String(io_EndpointInfo,"preset_name","flat");
     
     return 0; // No errors
@@ -129,11 +962,240 @@ int Policy_Endpoint_Property_Init(EndpointInfoT * io_EndpointInfo)
 
 int Policy_Init()
 {
-    // Other policy specific initialization
+    // Initialize Ressources
+    g_PolicyCtx.pSourceEndpoints =g_array_new(FALSE,TRUE,sizeof(EndPointPolicyInfoT));
+    g_PolicyCtx.pSinkEndpoints = g_array_new(FALSE,TRUE,sizeof(EndPointPolicyInfoT));
+    g_PolicyCtx.pStreamOpenPerPolicy = g_array_sized_new(FALSE, TRUE, sizeof(int), g_AHLCtx.policyCtx.iNumberRoles);
+    g_PolicyCtx.pMaxStreamOpenPerPolicy = g_array_sized_new(FALSE, TRUE, sizeof(int), g_AHLCtx.policyCtx.iNumberRoles);
+    g_PolicyCtx.pVolDuckPerPolicy = g_array_sized_new(FALSE, TRUE, sizeof(int), g_AHLCtx.policyCtx.iNumberRoles);
+
+    int initial_value=0;
+    int max_value=0;
+    int vol_init_value=0;
+    int vol_duck_value=0;
+    GArray * pRoleDeviceArray = NULL;
+    //Init the number of open stream    
+    for(int i=0; i<g_AHLCtx.policyCtx.iNumberRoles; i++)
+    {
+        g_array_append_val(g_PolicyCtx.pStreamOpenPerPolicy, initial_value);
+        
+        GString gs = g_array_index( g_AHLCtx.policyCtx.pAudioRoles, GString, i );
+        max_value = MAX_ACTIVE_STREAM_POLICY;
+        if ( strcasecmp(gs.str,AHL_ROLE_WARNING) == 0 )
+        {
+            max_value = 4;
+            vol_init_value=80; 
+            vol_duck_value = 0;
+        }
+        else if ( strcasecmp(gs.str,AHL_ROLE_GUIDANCE) == 0 )
+        {
+            max_value = 10;
+            vol_init_value=70; 
+            vol_duck_value = 40;
+        }
+        else if ( strcasecmp(gs.str,AHL_ROLE_NOTIFICATION) == 0 )
+        {
+            max_value = 4;
+            vol_init_value=80;
+            vol_duck_value = 0; 
+        }
+        else if ( strcasecmp(gs.str,AHL_ROLE_COMMUNICATION) == 0 )
+        {
+            max_value = 10;
+            vol_init_value=70; 
+            vol_duck_value = 30;
+        }
+        else if ( strcasecmp(gs.str,AHL_ROLE_ENTERTAINMENT) == 0 )
+        {
+            max_value = MAX_ACTIVE_STREAM_POLICY;
+            vol_init_value=60; 
+            vol_duck_value = 40;         
+        }
+        else if ( strcasecmp(gs.str,AHL_ROLE_SYSTEM) == 0 )
+        {
+            max_value = 2;
+            vol_init_value=100; 
+            vol_duck_value = 0;
+        }
+        else if ( strcasecmp(gs.str,AHL_ROLE_STARTUP) == 0 )
+        {
+            max_value = 1;
+            vol_init_value=90; 
+            vol_duck_value = 0;
+        }
+        else if ( strcasecmp(gs.str,AHL_ROLE_SHUTDOWN) == 0 )
+        {
+            max_value = 1;
+            vol_init_value=90; 
+            vol_duck_value = 0;
+        }
+
+        g_array_append_val(g_PolicyCtx.pMaxStreamOpenPerPolicy, max_value);
+        g_array_append_val(g_PolicyCtx.pVolDuckPerPolicy, vol_duck_value);
+
+        //Get actual volume value
+        pRoleDeviceArray = g_ptr_array_index( g_AHLCtx.policyCtx.pSinkEndpoints, i );
+        if (pRoleDeviceArray != NULL) 
+        {
+            for ( int j = 0 ; j < pRoleDeviceArray->len; j++)
+            {
+
+                //Init all Volume
+                EndpointInfoT * pEndpointInfo = &g_array_index(pRoleDeviceArray,EndpointInfoT,j);
+                int err= PolicySetVolumeRamp(pEndpointInfo, vol_init_value);
+                if(err)                
+                {
+                    AFB_WARNING("Endpoint:%s Set Volume return with errorcode%i",pEndpointInfo->gsDeviceName->str, err);                        
+                    //try to read volume instead
+                    err=PolicyGetVolume(pEndpointInfo);
+                    if(err != 0)
+                    {
+                        AFB_WARNING("Can't get volume of Endpoint %s",pEndpointInfo->gsDeviceName->str);
+                    }    
+                }  
+
+                /*
+                EndpointInfoT * pEndpointInfo = &g_array_index(pRoleDeviceArray,EndpointInfoT,j);                
+                int err=PolicyGetVolume(pEndpointInfo);
+                if(err != 0)
+                {
+                    AFB_WARNING("Can't get volume of Endpoint %s",pEndpointInfo->gsDeviceName->str);
+                }
+*/                            
+            }
+        }
+    }
+ 
+
+    //Set System Normal for now, this should be set by an event
+    //TODO: Receive event from low level
+    g_PolicyCtx.systemState = SYSTEM_NORMAL;
+
+    //register audio backend events
+    json_object *queryurl, *responseJ, *devidJ, *eventsJ;
+    
+    eventsJ = json_object_new_array();
+    json_object_array_add(eventsJ, json_object_new_string("audiod_system_event"));
+    queryurl = json_object_new_object();
+    json_object_object_add(queryurl, "events", eventsJ);
+    int returnResult = afb_service_call_sync("audiod", "subscribe", queryurl, &responseJ);
+    if (returnResult) {
+        AFB_ERROR("Fail subscribing to Audio Backend System events");
+        return -1;
+    }
+
+
     return 0; // No errors
 }
-
+ 
 void Policy_Term()
 {
-    // Policy termination
+
+    //Free Ressources
+    for(int i=0; i<g_PolicyCtx.pSourceEndpoints->len; i++)
+    {
+        EndPointPolicyInfoT * pCurEndpoint = &g_array_index(g_PolicyCtx.pSourceEndpoints,EndPointPolicyInfoT,i);    
+        g_array_free(pCurEndpoint->streamInfo,TRUE);
+        pCurEndpoint->streamInfo= NULL;
+    }
+
+    for(int i=0; i<g_PolicyCtx.pSinkEndpoints->len; i++)
+    {
+        EndPointPolicyInfoT * pCurEndpoint = &g_array_index(g_PolicyCtx.pSinkEndpoints,EndPointPolicyInfoT,i);    
+        g_array_free(pCurEndpoint->streamInfo,TRUE);
+        pCurEndpoint->streamInfo = NULL;
+    }
+    
+    g_array_free(g_PolicyCtx.pSourceEndpoints,TRUE);
+    g_PolicyCtx.pSourceEndpoints = NULL;
+    g_array_free(g_PolicyCtx.pSinkEndpoints,TRUE);
+    g_PolicyCtx.pSinkEndpoints = NULL;
+
+    g_array_free(g_PolicyCtx.pStreamOpenPerPolicy,TRUE);
+    g_PolicyCtx.pStreamOpenPerPolicy = NULL;
+    g_array_free(g_PolicyCtx.pMaxStreamOpenPerPolicy,TRUE);
+    g_PolicyCtx.pMaxStreamOpenPerPolicy = NULL;
+    g_array_free(g_PolicyCtx.pVolDuckPerPolicy, TRUE);
+    g_PolicyCtx.pVolDuckPerPolicy = NULL;
 }
+
+static void PolicySpeedModify(int speed)
+{
+    
+    for(int i=0; i<g_PolicyCtx.pSinkEndpoints->len; i++)
+    {
+        EndPointPolicyInfoT * pCurEndpoint = &g_array_index(g_PolicyCtx.pSinkEndpoints,EndPointPolicyInfoT,i);    
+        if(pCurEndpoint == NULL)
+        {
+            AFB_WARNING("Sink Endpoint not found");
+            return;
+
+        }
+        //check if active 
+        if(pCurEndpoint->streamInfo->len > 0 )
+        {
+            StreamPolicyInfoT * pCurStream = &g_array_index(pCurEndpoint->streamInfo,StreamPolicyInfoT,pCurEndpoint->streamInfo->len-1);
+
+
+            //Get Stream Info
+            StreamInfoT * pActiveStreamInfo = PolicyGetActiveStream(pCurStream->streamID);
+            if (pActiveStreamInfo == NULL) {
+                AFB_WARNING("Stream not found, Specified stream not currently active stream_id -> %d",pCurStream->streamID);
+                return; 
+            }
+
+            if(strcasecmp(pActiveStreamInfo->pEndpointInfo->gsAudioRole->str,AHL_ROLE_ENTERTAINMENT)==0)
+            {
+
+                if(speed > 30 && speed < 100)
+                {
+                    int volume =speed;
+                    PolicySetVolumeRamp(pActiveStreamInfo->pEndpointInfo,volume);
+                }
+                
+
+            }
+            
+        }
+
+    }
+}
+
+
+void Policy_OnEvent(const char *evtname, json_object *eventJ)
+{
+    AFB_DEBUG("Policy received event %s", evtname);
+
+	char *eventName = NULL;
+	json_object *event_parameter = NULL;
+    int speed = 0;
+
+
+    if(strcasecmp(evtname, "audiod/system_events")==0)
+    {
+
+        int err = wrap_json_unpack(eventJ, "{s:s,s:o}", "event_name", &eventName, "event_parameter", &event_parameter);
+        if (err) {        
+            AFB_WARNING("Invalid arguments, Args not a valid json object query=%s", json_object_get_string(eventJ));
+            return;
+        }
+    
+        if(strcasecmp(eventName, "speed")==0)
+        {
+            AFB_NOTICE("Invalid arguments, Args not a valid json object query=%s", json_object_get_string(event_parameter));
+            err = wrap_json_unpack(event_parameter, "{s:i}", "speed_value", &speed);
+            if (err) {        
+                AFB_WARNING("Invalid arguments, Args not a valid json object query=%s", json_object_get_string(event_parameter));
+                return;
+            }   
+
+            //When speed change Modify volume on Endpoint where entertainment change
+            PolicySpeedModify(speed);
+        }
+
+    }
+
+
+
+
+}
\ No newline at end of file