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authorTai Vuong <tvuong@audiokinetic.com>2017-10-30 15:18:33 -0400
committerTai Vuong <tvuong@audiokinetic.com>2017-10-30 15:18:33 -0400
commitc46955de2731563d1991691cd1a7986f05f019e3 (patch)
treee0375428c2c9ad60bbfb8cc7f53f157770232ea6 /src/ahl-policy.c
parent53aea8f073c5b4ad859c39f903fdbcaccd2fc5b8 (diff)
parent8a584f01b46d251fdc5de8b071eff755d99f0090 (diff)
isolate structure use in policy util from HLB
Diffstat (limited to 'src/ahl-policy.c')
-rw-r--r--src/ahl-policy.c1094
1 files changed, 1063 insertions, 31 deletions
diff --git a/src/ahl-policy.c b/src/ahl-policy.c
index ff65d10..54634ff 100644
--- a/src/ahl-policy.c
+++ b/src/ahl-policy.c
@@ -1,6 +1,5 @@
/*
* Copyright (C) 2017 "Audiokinetic Inc"
- * Author Francois Thibault <fthibault@audiokinetic.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -18,59 +17,1092 @@
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
+#include <stdbool.h>
+#include "wrap-json.h"
+#include "ahl-policy-utils.h"
+#include "ahl-interface.h"
+#include "ahl-policy.h"
-#include "ahl-binding.h"
+#ifndef AHL_DISCONNECT_POLICY
+// Global Context
+PolicyLocalCtxT g_PolicyCtx;
-// 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
-// Going a step further would be to implement this within afb-controler policy plug-in (would require bi-directional access to HLB context)
-extern AHLCtxT g_AHLCtx; // TODO: Cannot stay if moved to external module
+// Helper Functions
+static int getStreamConfig(char *pAudioRole, StreamConfigT *pStreamConfig)
+{
+ if(pAudioRole == NULL || pStreamConfig==NULL)
+ {
+ return POLICY_FAIL;
+ }
-// Attribute of high-level binding (parsed), policy enforced
-typedef enum InterruptedBehavior {
- INTERRUPTEDBEHAVIOR_CONTINUE = 0, // Continue to play when interrupted (e.g. media will be ducked)
- INTERRUPTEDBEHAVIOR_CANCEL, // Abort playback when interrupted (e.g. non-important HMI feedback that does not make sense later)
- INTERRUPTEDBEHAVIOR_PAUSE, // Pause source when interrupted, to be resumed afterwards (e.g. non-temporal guidance)
- INTERRUPTEDBEHAVIOR_MAXVALUE, // Enum count, keep at the end
-} InterruptedBehaviorT;
+ if ( strcasecmp(pAudioRole,AHL_ROLE_WARNING) == 0 )
+ {
+ pStreamConfig->iNbMaxStream = 4;
+ pStreamConfig->iVolumeInit = 80;
+ pStreamConfig->iVolumeDuckValue = 0;
+ }
+ else if ( strcasecmp(pAudioRole,AHL_ROLE_GUIDANCE) == 0 )
+ {
+ pStreamConfig->iNbMaxStream = 10;
+ pStreamConfig->iVolumeInit = 70;
+ pStreamConfig->iVolumeDuckValue = 30;
+ }
+ else if ( strcasecmp(pAudioRole,AHL_ROLE_NOTIFICATION) == 0 )
+ {
+ pStreamConfig->iNbMaxStream = 4;
+ pStreamConfig->iVolumeInit = 80;
+ pStreamConfig->iVolumeDuckValue = 10;
+ }
+ else if ( strcasecmp(pAudioRole,AHL_ROLE_COMMUNICATION) == 0 )
+ {
+ pStreamConfig->iNbMaxStream = 10;
+ pStreamConfig->iVolumeInit = 70;
+ pStreamConfig->iVolumeDuckValue = 10;
+ }
+ else if ( strcasecmp(pAudioRole,AHL_ROLE_ENTERTAINMENT) == 0 )
+ {
+ pStreamConfig->iNbMaxStream = MAX_ACTIVE_STREAM_POLICY;
+ pStreamConfig->iVolumeInit = 60;
+ pStreamConfig->iVolumeDuckValue = 40;
+ }
+ else if ( strcasecmp(pAudioRole,AHL_ROLE_SYSTEM) == 0 )
+ {
+ pStreamConfig->iNbMaxStream = 2;
+ pStreamConfig->iVolumeInit = 100;
+ pStreamConfig->iVolumeDuckValue = 0;
+ }
+ else if ( strcasecmp(pAudioRole,AHL_ROLE_STARTUP) == 0 )
+ {
+ pStreamConfig->iNbMaxStream = 1;
+ pStreamConfig->iVolumeInit = 90;
+ pStreamConfig->iVolumeDuckValue = 0;
+ }
+ else if ( strcasecmp(pAudioRole,AHL_ROLE_SHUTDOWN) == 0 )
+ {
+ pStreamConfig->iNbMaxStream = 1;
+ pStreamConfig->iVolumeInit = 90;
+ pStreamConfig->iVolumeDuckValue = 0;
+ }
+ return POLICY_SUCCESS;
+}
-PUBLIC int Policy_OpenStream(char *pAudioRole, EndpointTypeT endpointType, endpointID_t endpointID)
+static int PolicySetVolume(int iEndpointID, int iEndpointType, char *pHalApiName, char *AudioRole, DeviceURITypeT deviceType, int iVolume, bool bMute)
{
- return 1; // Policy allowed
+ if(pHalApiName == NULL)
+ {
+ AFB_WARNING("SetVolume cannot be accomplished without proper HAL association");
+ return POLICY_FAIL;
+ }
+
+ if(AudioRole == NULL)
+ {
+ AFB_ERROR("Invalid AudioRole : %s",AudioRole);
+ return POLICY_FAIL;
+ }
+
+ // Using audio role available from endpoint to target the right HAL control (build string based on convention)
+ GString * gsHALControlName = NULL;
+ switch(deviceType)
+ {
+ 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(AudioRole);
+ if(bMute == false)
+ {
+ AFB_DEBUG("Using ramp");
+ g_string_append(gsHALControlName,"_Ramp");
+ }
+ else
+ {
+ AFB_DEBUG("Not using ramp");
+ g_string_append(gsHALControlName,"_Vol"); // no ramping
+ }
+ break;
+ default:
+ //Set volume to zero for display purpose only.
+ //Not support yet
+ AFB_WARNING("Device Type %i is not support and can't set volume on HalName %s",deviceType, pHalApiName);
+ return POLICY_FAIL;
+ 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 with errorcode: %i",json_object_to_json_string(j_query), err);
+ return POLICY_FAIL;
+ }
+
+ //TODO implement Volume limitation based on policy
+
+ // Set the volume using the HAL
+ err = afb_service_call_sync(pHalApiName, "ctlset", j_query, &j_response);
+ if (err)
+ {
+ AFB_ERROR("Could not ctlset on HAL: %s with errorcode: %i",pHalApiName, err);
+ return POLICY_FAIL;
+ }
+ AFB_DEBUG("HAL ctlset response=%s", json_object_to_json_string(j_response));
+
+ if (bMute == false) {
+ // Package event data
+ json_object * eventDataJ = NULL;
+ err = wrap_json_pack(&eventDataJ,"{s:s,s:i,s:i,s:i,s:s}","event_name", AHL_ENDPOINT_VOLUME_EVENT,"endpoint_id", iEndpointID, "endpoint_type", iEndpointType,"value",iVolume, "audio_role", AudioRole);
+ if (err)
+ {
+ AFB_ERROR("Invalid event data for volume event %s with errorcode: %i",json_object_to_json_string(eventDataJ), err);
+ return POLICY_FAIL;
+ }
+
+ audiohlapi_raise_event(eventDataJ);
+ }
+
+ return POLICY_SUCCESS;
}
-PUBLIC int Policy_SetVolume(EndpointTypeT endpointType, endpointID_t endpointID, char *volumeStr, int rampTimeMS)
+static int PolicyGetVolume(int iEndpointID, int iEndpointType, char *pHalApiName, char *AudioRole, DeviceURITypeT deviceType, int *pVolume)
{
- return 1; // Policy allowed
+ GString * gsHALControlName = NULL;
+
+ // Using audio role available from endpoint to target the right HAL control (build string based on convention)
+ switch(deviceType)
+ {
+ 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(AudioRole);
+ g_string_append(gsHALControlName,"_Vol"); // Or _Vol for direct control (no ramping)
+ break;
+ default:
+ // Set volume to zero for display purpose only.
+ // Not supported yet
+ *pVolume = 0;
+ AFB_WARNING("Can't get volume on HAL: %s for device type: %d",pHalApiName,deviceType);
+ return POLICY_FAIL;
+ }
+
+ // Set endpoint volume using HAL services (leveraging ramps etc.)
+ json_object *j_response = NULL, *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, errorcode: %i",json_object_to_json_string(j_query),err);
+ return POLICY_FAIL;
+ }
+
+ //TODO implement Volume limitation based on policy
+
+ // Get the volume using the HAL
+ err = afb_service_call_sync(pHalApiName, "ctlget", j_query, &j_response);
+ if (err)
+ {
+ AFB_WARNING("Could not ctlset on HAL: %s, errorcode: %i",pHalApiName, err);
+ return POLICY_FAIL;
+ }
+ 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 POLICY_FAIL;
+ }
+
+ }
+ 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 POLICY_FAIL;
+ }
+
+ }
+
+ *pVolume = val1;
+
+ // Package event data
+ json_object * eventDataJ = NULL;
+ err = wrap_json_pack(&eventDataJ,"{s:s,s:i,s:i,s:i,s:s}","event_name", AHL_ENDPOINT_VOLUME_EVENT,"endpoint_id", iEndpointID, "endpoint_type", iEndpointType,"value",*pVolume, "audio_role", AudioRole);
+ if (err)
+ {
+ AFB_ERROR("Invalid event data for volume event %s with errorcode: %i",json_object_to_json_string(eventDataJ), err);
+ return POLICY_FAIL;
+ }
+
+ audiohlapi_raise_event(eventDataJ);
+
+ return POLICY_SUCCESS;
}
-PUBLIC int Policy_SetProperty(EndpointTypeT endpointType, endpointID_t endpointID, char *propertyName, char *propValueStr, int rampTimeMS)
+static void PolicyPostStateEvent(int iStreamID, StreamEventT eventState)
{
- return 1; // Policy allowed
+
+ json_object * eventDataJ = NULL;
+ int err = wrap_json_pack(&eventDataJ,"{s:s,s:i,s:i}","event_name", AHL_STREAM_STATE_EVENT,"stream_id",iStreamID, "state_event",eventState);
+ if (err)
+ {
+ AFB_ERROR("Invalid event data for stream state event: %s",json_object_to_json_string(eventDataJ));
+ }
+ else
+ {
+ audiohlapi_raise_event(eventDataJ);
+ }
+}
+
+static EndPointPolicyInfoT *PolicySearchEndPoint(EndpointTypeT type, char *pDeviceName)
+{
+ 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(strcasecmp(pCurEndpoint->pDeviceName,pDeviceName)==0)
+ {
+ return pCurEndpoint;
+ }
+ }
+
+ return NULL;
}
-PUBLIC int Policy_SetState(EndpointTypeT endpointType, endpointID_t endpointID, char *pStateName, char *pStateValue)
+static int PolicyAddEndPoint(StreamInfoT *pStreamInfo)
{
+ EndPointPolicyInfoT *pPolicyEndPoint = PolicySearchEndPoint(pStreamInfo->pEndpointInfo->type, pStreamInfo->pEndpointInfo->gsDeviceName);
+ if(pPolicyEndPoint == NULL)
+ {
+ //create EndPoint and add playing stream
+ EndPointPolicyInfoT newEndPointPolicyInfo;
+ newEndPointPolicyInfo.endpointID = pStreamInfo->pEndpointInfo->endpointID;
+ newEndPointPolicyInfo.type = pStreamInfo->pEndpointInfo->type;
+ newEndPointPolicyInfo.deviceType = pStreamInfo->pEndpointInfo->deviceURIType;
+ newEndPointPolicyInfo.pDeviceName = strdup(pStreamInfo->pEndpointInfo->gsDeviceName);
+ newEndPointPolicyInfo.pHalApiName = strdup(pStreamInfo->pEndpointInfo->gsHALAPIName);
+ newEndPointPolicyInfo.iVolume = pStreamInfo->pEndpointInfo->iVolume;
+ newEndPointPolicyInfo.streamInfo = g_array_new(FALSE, TRUE, sizeof(StreamPolicyInfoT));;
- //Active rule check
-
- //Ducking rule settings
+ if(pStreamInfo->pEndpointInfo->type == ENDPOINTTYPE_SINK)
+ {
+ g_array_append_val(g_PolicyCtx.pSinkEndpoints, newEndPointPolicyInfo);
+ }
+ else
+ {
+ g_array_append_val(g_PolicyCtx.pSourceEndpoints, newEndPointPolicyInfo);
+ }
+
+ }
+ return POLICY_SUCCESS;
+}
+
+
+static int PolicyAddStream(EndPointPolicyInfoT *pCurrEndPointPolicy, StreamInfoT *pStreamInfo)
+{
+ StreamPolicyInfoT newStreamPolicyInfo;
+
+ newStreamPolicyInfo.streamID = pStreamInfo->streamID;
+ newStreamPolicyInfo.RolePriority = pStreamInfo->iPriority;
+ newStreamPolicyInfo.pAudioRole = pStreamInfo->pRoleName;
+ newStreamPolicyInfo.interruptBehavior = pStreamInfo->eInterruptBehavior;
+ newStreamPolicyInfo.iDuckVolume = 0;
+ g_array_append_val(pCurrEndPointPolicy->streamInfo, newStreamPolicyInfo);
+ return POLICY_SUCCESS;
+}
+
+static int PolicyRunningIdleTransition(EndPointPolicyInfoT *pCurrEndPointPolicy,StreamInfoT * pStreamInfo)
+{
+ int err=0;
+ if(pCurrEndPointPolicy == NULL || pCurrEndPointPolicy->streamInfo->len == 0)
+ {
+ //Remove endpoint
+ AFB_ERROR("StreamID not found in active Endpoint when Running to Idle transition is request");
+ return POLICY_FAIL;
+ }
+ //Search for the matching stream
+ for(int i=0; i<pCurrEndPointPolicy->streamInfo->len; i++)
+ {
+ StreamPolicyInfoT currentPolicyStreamInfo = g_array_index(pCurrEndPointPolicy->streamInfo,StreamPolicyInfoT,i);
+ if(currentPolicyStreamInfo.streamID == pStreamInfo->streamID)
+ {
+ //remove the current stream
+ g_array_remove_index(pCurrEndPointPolicy->streamInfo, i);
+ if(pCurrEndPointPolicy->streamInfo->len > 0) //need to unduck
+ {
+ //check the last element(Akways highest priority)
+ StreamPolicyInfoT HighPriorityStreamInfo = g_array_index(pCurrEndPointPolicy->streamInfo,StreamPolicyInfoT,pCurrEndPointPolicy->streamInfo->len-1);
+ switch(currentPolicyStreamInfo.interruptBehavior)
+ {
+ case INTERRUPTBEHAVIOR_CONTINUE:
+ //unduck and set Volume back to original value
+ err= PolicySetVolume(pCurrEndPointPolicy->endpointID,
+ pCurrEndPointPolicy->type,
+ pCurrEndPointPolicy->pHalApiName,
+ HighPriorityStreamInfo.pAudioRole,
+ pCurrEndPointPolicy->deviceType,
+ HighPriorityStreamInfo.iDuckVolume,
+ false);
+ if(err)
+ {
+ return POLICY_FAIL;
+ }
+
+ return POLICY_SUCCESS;
+ break;
+ case INTERRUPTBEHAVIOR_PAUSE:
+ //pInterruptStreamInfo->streamState = STREAM_STATE_RUNNING;
+ PolicyPostStateEvent(HighPriorityStreamInfo.streamID,STREAM_EVENT_RESUME);
+ return POLICY_SUCCESS;
+ break;
+
+ case INTERRUPTBEHAVIOR_CANCEL:
+ PolicyPostStateEvent(HighPriorityStreamInfo.streamID,STREAM_EVENT_START);
+ return POLICY_SUCCESS;
+ break;
+ default:
+ AFB_ERROR("Unsupported Intterupt Behavior");
+ return POLICY_FAIL;
+ break;
+ }
+ }
+ }
+ }
+ return POLICY_SUCCESS;
+}
+
+static int PolicyIdleRunningTransition(EndPointPolicyInfoT *pCurrEndPointPolicy, StreamInfoT * pStreamInfo)
+{
+ int err=0;
+ if(pCurrEndPointPolicy->streamInfo == NULL)
+ {
+ AFB_ERROR("pCurrEndPointPolicy->streamInfo is null on an active endpoint");
+ return POLICY_FAIL;
+ }
+
+ if(pCurrEndPointPolicy->streamInfo->len == 0) //No stream is playing on this endpoint
+ {
+ PolicyAddStream(pCurrEndPointPolicy, pStreamInfo);
+ }
+ else //Interrupt case
+ {
+ //check the last element
+ StreamPolicyInfoT *pCurrentActiveStreamInfo = &g_array_index(pCurrEndPointPolicy->streamInfo,StreamPolicyInfoT,pCurrEndPointPolicy->streamInfo->len-1);
+ g_assert_nonnull(pCurrentActiveStreamInfo);
+ if(pStreamInfo->iPriority >= pCurrentActiveStreamInfo->RolePriority)
+ {
+ switch(pStreamInfo->eInterruptBehavior)
+ {
+ case INTERRUPTBEHAVIOR_CONTINUE:
+ //Save the current Volume and set the docking volume
+ pCurrentActiveStreamInfo->iDuckVolume = pStreamInfo->pEndpointInfo->iVolume;
+ StreamConfigT StreamConfig;
+ err = getStreamConfig(pStreamInfo->pRoleName, &StreamConfig);
+ if(err == POLICY_FAIL)
+ {
+ AFB_ERROR("Error getting stream configuration for audiorole: %s", pStreamInfo->pRoleName);
+ return POLICY_FAIL;
+ }
+ err= PolicySetVolume(pCurrEndPointPolicy->endpointID,
+ pCurrEndPointPolicy->type,
+ pCurrEndPointPolicy->pHalApiName,
+ pCurrentActiveStreamInfo->pAudioRole,
+ pCurrEndPointPolicy->deviceType,
+ StreamConfig.iVolumeDuckValue,
+ false);
+ if(err)
+ {
+ AFB_ERROR("Set Volume return with errorcode%i for streamID: %i and Hal:%s", err, pCurrentActiveStreamInfo->streamID, pCurrEndPointPolicy->pHalApiName);
+ return POLICY_FAIL;
+ }
+ break;
+ case INTERRUPTBEHAVIOR_PAUSE:
+ PolicyPostStateEvent(pCurrentActiveStreamInfo->streamID,STREAM_EVENT_PAUSE);
+ break;
+
+ case INTERRUPTBEHAVIOR_CANCEL:
+ PolicyPostStateEvent(pCurrentActiveStreamInfo->streamID,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 last
+ PolicyAddStream(pCurrEndPointPolicy, pStreamInfo);
+ }
+ else
+ {
+ //Higher Priority Stream is playing
+ AFB_ERROR("Higher Priority Stream is playing");
+ return POLICY_FAIL;
+ }
+
+
+ }
+
+ return POLICY_SUCCESS;
+}
+
+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);
+ if(strcasecmp(pCurStream->pAudioRole,AHL_ROLE_ENTERTAINMENT)==0)
+ {
+ if(speed > 30 && speed < 100)
+ {
+ int volume =speed;
+ PolicySetVolume(pCurEndpoint->endpointID,
+ pCurEndpoint->type,
+ pCurEndpoint->pHalApiName,
+ pCurStream->pAudioRole,
+ pCurEndpoint->deviceType,
+ volume,
+ false);
+ }
+ }
+ }
+ }
+}
+
+static int RetrieveAssociatedHALAPIName(EndpointInfoT * io_pEndpointInfo)
+{
+ if(g_PolicyCtx.pHALList)
+ {
+ for(int i=0; i<g_PolicyCtx.pHALList->len; i++)
+ {
+ HalInfoT *pHalInfo = g_ptr_array_index(g_PolicyCtx.pHALList, i);
+ // Retrieve card number (e.g. hw:0)
+ int iCardNum = atoi(pHalInfo->pDevID+3);
+ if (iCardNum == io_pEndpointInfo->alsaInfo.cardNum) {
+ io_pEndpointInfo->gsHALAPIName=strdup(pHalInfo->pAPIName);
+ io_pEndpointInfo->gsDisplayName=strdup(pHalInfo->pDisplayName);
+ return POLICY_SUCCESS;
+ }
+ }
+ }
+
+ io_pEndpointInfo->gsHALAPIName=strdup(AHL_POLICY_UNDEFINED_HALNAME);
+ io_pEndpointInfo->gsDisplayName=strdup(AHL_POLICY_UNDEFINED_DISPLAYNAME);
+
+ return POLICY_FAIL;
+}
+
+static int GetHALList(void)
+{
+ json_object *j_response, *j_query = NULL;
+ int err;
+ err = afb_service_call_sync("alsacore", "hallist", j_query, &j_response);
+ if (err) {
+ AFB_ERROR("Could not retrieve list of HAL from ALSA core");
+ return POLICY_FAIL;
+ }
+ AFB_DEBUG("ALSAcore hallist response=%s", json_object_to_json_string(j_response));
+
+ // Look through returned list for matching card
+ json_object * jRespObj = NULL;
+ json_object_object_get_ex(j_response, "response", &jRespObj);
+ int iNumHAL = json_object_array_length(jRespObj);
+ for ( int i = 0 ; i < iNumHAL; i++)
+ {
+ json_object * jHAL = json_object_array_get_idx(jRespObj,i);
+ char * pDevIDStr = NULL;
+ char * pAPIName = NULL;
+ char * pShortName = NULL;
+
+ int err = wrap_json_unpack(jHAL, "{s:s,s:s,s:s}", "devid", &pDevIDStr,"api", &pAPIName,"shortname",&pShortName);
+ if (err) {
+ AFB_ERROR("Could not retrieve devid string=%s", json_object_get_string(jHAL));
+ return POLICY_FAIL;
+ }
+
+ HalInfoT *pHalInfo = (HalInfoT*)malloc(sizeof(HalInfoT));
+ if(pHalInfo == NULL)
+ {
+ AFB_ERROR("Unable to allocate memory for HalInfo");
+ return POLICY_FAIL;
+ }
+
+ pHalInfo->pDevID = strdup(pDevIDStr);
+ pHalInfo->pAPIName = strdup(pAPIName);
+ pHalInfo->pDisplayName = strdup(pShortName);
+
+ g_ptr_array_add( g_PolicyCtx.pHALList, pHalInfo);
+ }
+
+ return POLICY_SUCCESS;
+}
+
+//
+// Policy API Functions
+//
+int Policy_OpenStream(json_object *pPolicyStreamJ)
+{
+ StreamInfoT PolicyStream;
+ EndpointInfoT EndpointInfo;
+ PolicyStream.pEndpointInfo =&EndpointInfo;
+
+ int err = PolicyCtxJSONToStream(pPolicyStreamJ, &PolicyStream);
+ if(err == AHL_POLICY_UTIL_FAIL)
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+
+ // 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;
+ }
+
+ StreamConfigT StreamConfig;
+ err = getStreamConfig(PolicyStream.pRoleName, &StreamConfig);
+ if(err == POLICY_FAIL)
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+
+ if(PolicyStream.pEndpointInfo->deviceURIType != DEVICEURITYPE_NOT_ALSA) {
+ err=PolicyGetVolume(PolicyStream.pEndpointInfo->endpointID,
+ PolicyStream.pEndpointInfo->type,
+ PolicyStream.pEndpointInfo->gsHALAPIName,
+ PolicyStream.pEndpointInfo->pRoleName,
+ PolicyStream.pEndpointInfo->deviceURIType,
+ &PolicyStream.pEndpointInfo->iVolume);
+ if(err == POLICY_FAIL)
+ {
+ return AHL_POLICY_REJECT;
+ }
+ }
+
+ err = PolicyAddEndPoint(&PolicyStream);
+ if(err == POLICY_FAIL)
+ {
+ return AHL_POLICY_REJECT;
+ }
+ return AHL_POLICY_ACCEPT;
+}
- return AUDIOHL_POLICY_ACCEPT;
+int Policy_CloseStream(json_object *pPolicyStreamJ)
+{
+ //TODO remove Endpoint when there is no stream
+ StreamInfoT PolicyStream;
+ EndpointInfoT EndpointInfo;
+ PolicyStream.pEndpointInfo =&EndpointInfo;
+ int err = PolicyCtxJSONToStream(pPolicyStreamJ, &PolicyStream);
+ if(err == AHL_POLICY_UTIL_FAIL)
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+
+ return AHL_POLICY_ACCEPT;
}
-PUBLIC int Policy_PostSoundEvent(char *eventName, char *audioRole, char *mediaName, void *audioContext)
+int Policy_SetStreamState(json_object *pPolicyStreamJ)
{
- return 1; // Policy allowed
+ //TODO
+ // Optional: Mute endpoint before activation, unmute afterwards (after a delay?) to avoid noises
+ StreamInfoT PolicyStream;
+ EndpointInfoT EndpointInfo;
+ PolicyStream.pEndpointInfo =&EndpointInfo;
+
+
+ StreamStateT streamState = 0;
+ StreamInfoT * pPolicyStream = &PolicyStream;
+ int err = PolicyCtxJSONToStream(pPolicyStreamJ, pPolicyStream);
+ if(err == AHL_POLICY_UTIL_FAIL)
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+
+ json_object *streamStateJ=NULL;
+
+ if(!json_object_object_get_ex(pPolicyStreamJ, "arg_stream_state", &streamStateJ))
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+ streamState = (StreamStateT)json_object_get_int(streamStateJ);
+
+ //Change of state
+ if(pPolicyStream->streamState != streamState)
+ {
+ //seach corresponding endpoint and gather information on it
+ EndPointPolicyInfoT *pCurrEndPointPolicy = PolicySearchEndPoint(pPolicyStream->pEndpointInfo->type , pPolicyStream->pEndpointInfo->gsDeviceName);
+
+ switch(pPolicyStream->streamState)
+ {
+ case STREAM_STATE_IDLE:
+ switch(streamState)
+ {
+ case STREAM_STATE_RUNNING:
+ err = PolicyIdleRunningTransition(pCurrEndPointPolicy, pPolicyStream);
+ if(err)
+ {
+ return AHL_POLICY_REJECT;
+ }
+ PolicyPostStateEvent(pPolicyStream->streamID,STREAM_EVENT_START);
+ break;
+ case STREAM_STATE_PAUSED:
+ err = PolicyIdleRunningTransition(pCurrEndPointPolicy, pPolicyStream);
+ if(err)
+ {
+ return AHL_POLICY_REJECT;
+ }
+ PolicyPostStateEvent(pPolicyStream->streamID,STREAM_EVENT_PAUSE);
+ break;
+ default:
+ return AHL_POLICY_REJECT;
+ break;
+ }
+ break;
+ case STREAM_STATE_RUNNING:
+ switch(streamState)
+ {
+ case STREAM_STATE_IDLE:
+ err = PolicyRunningIdleTransition(pCurrEndPointPolicy, pPolicyStream);
+ if(err)
+ {
+ return AHL_POLICY_REJECT;
+ }
+ PolicyPostStateEvent(pPolicyStream->streamID,STREAM_EVENT_STOP);
+ break;
+ case STREAM_STATE_PAUSED:
+ PolicyPostStateEvent(pPolicyStream->streamID,STREAM_EVENT_PAUSE);
+ break;
+ default:
+ return AHL_POLICY_REJECT;
+ break;
+ }
+ break;
+ case STREAM_STATE_PAUSED:
+ switch(streamState)
+ {
+ case STREAM_STATE_IDLE:
+ err = PolicyRunningIdleTransition(pCurrEndPointPolicy, pPolicyStream);
+ if(err)
+ {
+ return AHL_POLICY_REJECT;
+ }
+ PolicyPostStateEvent(pPolicyStream->streamID,STREAM_EVENT_STOP);
+ break;
+ case STREAM_STATE_RUNNING:
+ PolicyPostStateEvent(pPolicyStream->streamID,STREAM_EVENT_RESUME);
+ break;
+ default:
+ return AHL_POLICY_REJECT;
+ break;
+ }
+ break;
+ default:
+ return AHL_POLICY_REJECT;
+ break;
+ }
+ }
+ return AHL_POLICY_ACCEPT;
}
-PUBLIC int Policy_AudioDeviceChange()
+int Policy_SetStreamMute(json_object *pPolicyStreamJ)
{
- // Allow or disallow a new audio device
- // Raise events to engage device switching
- // Policy can also assign audio role(s) for device
- return 1; // Policy allowed
+ StreamMuteT streamMute = 0;
+ StreamInfoT PolicyStream;
+ EndpointInfoT EndpointInfo;
+ PolicyStream.pEndpointInfo =&EndpointInfo;
+ StreamInfoT * pPolicyStream = &PolicyStream;
+
+ int err = PolicyCtxJSONToStream(pPolicyStreamJ, pPolicyStream);
+ if(err == AHL_POLICY_UTIL_FAIL)
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+
+ json_object *streamMuteJ=NULL;
+
+ if(!json_object_object_get_ex(pPolicyStreamJ, "mute_state", &streamMuteJ))
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+ streamMute = (StreamMuteT)json_object_get_int(streamMuteJ);
+
+ if(streamMute != pPolicyStream->streamMute)
+ {
+ if(streamMute == STREAM_MUTED)
+ {
+
+ err= PolicySetVolume(pPolicyStream->pEndpointInfo->endpointID,
+ pPolicyStream->pEndpointInfo->type,
+ pPolicyStream->pEndpointInfo->gsHALAPIName,
+ pPolicyStream->pRoleName,
+ pPolicyStream->pEndpointInfo->deviceURIType,
+ 0,
+ true);
+ if(err)
+ {
+ AFB_ERROR("StreamID:%i Set Volume return with errorcode%i",pPolicyStream->streamID, err);
+ return AHL_POLICY_REJECT;
+ }
+ PolicyPostStateEvent(pPolicyStream->streamID,STREAM_EVENT_MUTED);
+ }
+ else
+ {
+ err= PolicySetVolume(pPolicyStream->pEndpointInfo->endpointID,
+ pPolicyStream->pEndpointInfo->type,
+ pPolicyStream->pEndpointInfo->gsHALAPIName,
+ pPolicyStream->pRoleName,
+ pPolicyStream->pEndpointInfo->deviceURIType,
+ pPolicyStream->pEndpointInfo->iVolume,
+ true);
+ if(err)
+ {
+ AFB_ERROR("Endpoint:%i Set Volume return with errorcode%i",pPolicyStream->streamID, err);
+ return AHL_POLICY_REJECT;
+ }
+ PolicyPostStateEvent(pPolicyStream->streamID,STREAM_EVENT_UNMUTED);
+
+ }
+
+ pPolicyStream->streamMute = streamMute;
+ }
+
+ return AHL_POLICY_ACCEPT;
}
+
+int Policy_SetVolume(json_object *pPolicyEndpointJ)
+{
+ char *volumeStr = NULL;
+ EndpointInfoT EndpointInfo;
+
+ int err = PolicyCtxJSONToEndpoint(pPolicyEndpointJ, &EndpointInfo);
+ if(err == AHL_POLICY_UTIL_FAIL)
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+
+ json_object *volumeJ=NULL;
+
+ if(!json_object_object_get_ex(pPolicyEndpointJ, "arg_volume", &volumeJ))
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+ volumeStr = (char*)json_object_get_string(volumeJ);
+
+ // 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
+ err= PolicySetVolume(EndpointInfo.endpointID,
+ EndpointInfo.type,
+ EndpointInfo.gsHALAPIName,
+ EndpointInfo.pRoleName,
+ EndpointInfo.deviceURIType,
+ vol,
+ false);
+ if (err)
+ {
+ AFB_ERROR("Set Volume return with errorcode%i", err);
+ return AHL_POLICY_REJECT;
+ }
+
+ return AHL_POLICY_ACCEPT;
+}
+
+int Policy_SetProperty(json_object *pPolicyEndpointJ)
+{
+
+ char *propertyName = NULL;
+ EndpointInfoT EndpointInfo;
+
+ int err = PolicyCtxJSONToEndpoint(pPolicyEndpointJ, &EndpointInfo);
+ if(err == AHL_POLICY_UTIL_FAIL)
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+
+ json_object *propertyNameJ=NULL;
+
+ if(!json_object_object_get_ex(pPolicyEndpointJ, "arg_property_name", &propertyNameJ))
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+ propertyName = (char*)json_object_get_string(propertyNameJ);
+
+ json_object *propValueJ;
+ if(!json_object_object_get_ex(pPolicyEndpointJ, "arg_property_value", &propValueJ))
+ {
+ return AHL_POLICY_ACCEPT;
+ }
+
+ gpointer *key_value=NULL;
+
+ key_value = g_hash_table_lookup(EndpointInfo.pPropTable,propertyName);
+ if(key_value == NULL)
+ {
+ AFB_ERROR("Can't find property %s, request will be rejected", propertyName);
+ return AHL_POLICY_REJECT;
+ }
+
+ //Get JsonObjectype
+ json_type currentjType = json_object_get_type((json_object*)key_value);
+ json_type newjType = json_object_get_type(propValueJ);
+
+ //Apply policy on set property if needed here
+ //Here we only validate that the type is the same
+ if(currentjType != newjType)
+ {
+ AFB_ERROR("Property Value Type is wrong");
+ return AHL_POLICY_REJECT;
+ }
+
+
+ //Create a new Json Object
+ json_object *pEventDataJ = NULL;
+ err = wrap_json_pack(&pEventDataJ,"{s:s,s:i,s:i,s:s,s:o,s:s}",
+ "event_name", AHL_ENDPOINT_PROPERTY_EVENT,
+ "endpoint_id", EndpointInfo.endpointID,
+ "endpoint_type", EndpointInfo.type,
+ "property_name", propertyName,
+ "value",propValueJ,
+ "audio_role", EndpointInfo.pRoleName);
+ if(err)
+ {
+ AFB_ERROR("Unable to pack property event");
+ return AHL_POLICY_REJECT;
+ }
+ //Raise Event to update HLB
+ audiohlapi_raise_event(pEventDataJ);
+
+ return AHL_POLICY_ACCEPT;
+}
+
+int Policy_PostAction(json_object *pPolicyActionJ)
+{
+ char * actionName = NULL;
+ char * audioRole = NULL;
+ char * mediaName = NULL;
+ json_object *actionContext = NULL;
+
+ int err = wrap_json_unpack(pPolicyActionJ, "{s:s,s:s,s?s,s?o}", "action_name", &actionName,"audio_role",&audioRole,"media_name",&mediaName,"action_context",&actionContext);
+ if (err) {
+ AFB_ERROR("Unable to pack JSON endpoint, =%s", wrap_json_get_error_string(err));
+ return AHL_POLICY_REJECT;
+ }
+
+ // TODO: Any event with media specified should trigger action on provided rendering services (e.g. Wwise binding, gstreamer file player wrapper, MPDC? simple ALSA player (aplay)?)
+ // Example (when the policy is hooked to CAN events). Post audio playback events other than safety during reverse gear engaged declined
+ // Example post HMI audio role playback events declined when higher priority streams are active
+
+ //In this use case just return the action back to highlevel binding.
+
+ json_object *pEventDataJ = NULL;
+ err = wrap_json_pack(&pEventDataJ, "{s:s,s:s,s:s,s?s,s?o}", "event_name", AHL_POST_ACTION_EVENT, "action_name", &actionName,"audio_role",&audioRole,"media_name",&mediaName,"action_context",&actionContext);
+ if (err) {
+ AFB_ERROR("Unable to pack JSON endpoint, =%s", wrap_json_get_error_string(err));
+ return AHL_POLICY_REJECT;
+ }
+ audiohlapi_raise_event(pEventDataJ);
+
+ return AHL_POLICY_ACCEPT;
+}
+
+int Policy_Endpoint_Init(json_object *pPolicyEndpointJ)
+{
+ EndpointInfoT EndpointInfo;
+
+ int err = PolicyCtxJSONToEndpoint(pPolicyEndpointJ, &EndpointInfo);
+ if(err == AHL_POLICY_UTIL_FAIL)
+ {
+ return AHL_POLICY_REJECT;
+ }
+
+ if (EndpointInfo.deviceURIType != DEVICEURITYPE_NOT_ALSA) {
+ // Update Hal Name
+ err = RetrieveAssociatedHALAPIName(&EndpointInfo);
+ if (err) {
+ AFB_ERROR("HAL not found for Device %s", EndpointInfo.gsDeviceName);
+ return AHL_POLICY_REJECT;
+ }
+
+ //Set Init Volume
+ StreamConfigT StreamConfig;
+ getStreamConfig(EndpointInfo.pRoleName, &StreamConfig);
+ err = PolicySetVolume(EndpointInfo.endpointID,
+ EndpointInfo.type,
+ EndpointInfo.gsHALAPIName,
+ EndpointInfo.pRoleName,
+ EndpointInfo.deviceURIType,
+ StreamConfig.iVolumeInit,
+ false);
+ if(err) {
+ return AHL_POLICY_REJECT;
+ }
+ }
+
+ // Test example
+ Add_Endpoint_Property_Int(&EndpointInfo,AHL_PROPERTY_EQ_LOW,3);
+ Add_Endpoint_Property_Int(&EndpointInfo,AHL_PROPERTY_EQ_MID,0);
+ Add_Endpoint_Property_Int(&EndpointInfo,AHL_PROPERTY_EQ_HIGH,6);
+ Add_Endpoint_Property_Int(&EndpointInfo,AHL_PROPERTY_BALANCE,0);
+ Add_Endpoint_Property_Int(&EndpointInfo,AHL_PROPERTY_FADE,30);
+ Add_Endpoint_Property_String(&EndpointInfo,"preset_name","flat");
+
+
+ gpointer *key_value = g_hash_table_lookup(EndpointInfo.pPropTable,AHL_PROPERTY_BALANCE);
+ if(key_value == NULL)
+ {
+ AFB_ERROR("Can't find property %s, request will be rejected", AHL_PROPERTY_BALANCE);
+ return AHL_POLICY_REJECT;
+ }
+
+ //Create a new Json Object
+ json_object *pNewPolicyEndpointJ = NULL;
+ err = PolicyEndpointStructToJSON(&EndpointInfo, &pNewPolicyEndpointJ);
+ if (err == AHL_POLICY_UTIL_FAIL)
+ {
+ return AHL_POLICY_REJECT;
+ }
+ json_object *paramJ= json_object_new_string(AHL_ENDPOINT_INIT_EVENT);
+ json_object_object_add(pNewPolicyEndpointJ, "event_name", paramJ);
+
+ //Raise Event to update HLB
+ audiohlapi_raise_event(pNewPolicyEndpointJ);
+
+ return AHL_POLICY_ACCEPT; // No errors
+}
+
+int Policy_Init()
+{
+ // Initialize Ressources
+ g_PolicyCtx.pSourceEndpoints =g_array_new(FALSE,TRUE,sizeof(EndPointPolicyInfoT));
+ g_PolicyCtx.pSinkEndpoints = g_array_new(FALSE,TRUE,sizeof(EndPointPolicyInfoT));
+ g_PolicyCtx.pHALList = g_ptr_array_new_with_free_func(g_free);
+
+ //Get HalList
+ GetHALList();
+
+ //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
+ //This is to simulate can bus, only used for demo
+ json_object *queryurl, *responseJ, *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 AHL_POLICY_REJECT;
+ }
+ return AHL_POLICY_ACCEPT;
+}
+
+void Policy_Term()
+{
+ //Free Ressources
+ if (g_PolicyCtx.pHALList) {
+ g_ptr_array_free(g_PolicyCtx.pHALList,TRUE);
+ g_PolicyCtx.pHALList = NULL;
+ }
+
+ 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;
+}
+
+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);
+ }
+ }
+}
+
+#endif // AHL_DISCONNECT_POLICY \ No newline at end of file