/* Copyright (c) 2017-2020 The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of The Linux Foundation, nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#define LOG_NDEBUG 0
#define LOG_TAG "LocSvc_GnssAdapter"

#include <inttypes.h>
#include <sys/stat.h>
#include <errno.h>
#include <ctype.h>
#include <cutils/properties.h>
#include <math.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netdb.h>
#include <GnssAdapter.h>
#include <string>
#include <sstream>
#include <loc_log.h>
#include <loc_nmea.h>
#include <Agps.h>
#include <SystemStatus.h>
#include <vector>
#include <loc_misc_utils.h>
#include <gps_extended_c.h>

#define RAD2DEG    (180.0 / M_PI)
#define DEG2RAD    (M_PI / 180.0)
#define PROCESS_NAME_ENGINE_SERVICE "engine-service"
#define MIN_TRACKING_INTERVAL (100) // 100 msec

#define BILLION_NSEC (1000000000ULL)
#define NMEA_MIN_THRESHOLD_MSEC (99)
#define NMEA_MAX_THRESHOLD_MSEC (975)

#define DGNSS_RANGE_UPDATE_TIME_10MIN_IN_MILLI  600000

using namespace loc_core;

static int loadEngHubForExternalEngine = 0;
static loc_param_s_type izatConfParamTable[] = {
    {"LOAD_ENGHUB_FOR_EXTERNAL_ENGINE", &loadEngHubForExternalEngine, nullptr,'n'}
};

/* Method to fetch status cb from loc_net_iface library */
typedef AgpsCbInfo& (*LocAgpsGetAgpsCbInfo)(LocAgpsOpenResultCb openResultCb,
        LocAgpsCloseResultCb closeResultCb, void* userDataPtr);

static void agpsOpenResultCb (bool isSuccess, AGpsExtType agpsType, const char* apn,
        AGpsBearerType bearerType, void* userDataPtr);
static void agpsCloseResultCb (bool isSuccess, AGpsExtType agpsType, void* userDataPtr);

typedef const CdfwInterface* (*getCdfwInterface)();

inline bool GnssReportLoggerUtil::isLogEnabled() {
    return (mLogLatency != nullptr);
}

inline void GnssReportLoggerUtil::log(const GnssLatencyInfo& gnssLatencyMeasInfo) {
    if (mLogLatency != nullptr) {
        mLogLatency(gnssLatencyMeasInfo);
    }
}

GnssAdapter::GnssAdapter() :
    LocAdapterBase(0,
                   LocContext::getLocContext(LocContext::mLocationHalName),
                   true, nullptr, true),
    mEngHubProxy(new EngineHubProxyBase()),
    mQDgnssListenerHDL(nullptr),
    mCdfwInterface(nullptr),
    mDGnssNeedReport(false),
    mDGnssDataUsage(false),
    mLocPositionMode(),
    mNHzNeeded(false),
    mSPEAlreadyRunningAtHighestInterval(false),
    mGnssSvIdUsedInPosition(),
    mGnssSvIdUsedInPosAvail(false),
    mControlCallbacks(),
    mAfwControlId(0),
    mNmeaMask(0),
    mGnssSvIdConfig(),
    mGnssSeconaryBandConfig(),
    mGnssSvTypeConfig(),
    mGnssSvTypeConfigCb(nullptr),
    mLocConfigInfo{},
    mNiData(),
    mAgpsManager(),
    mOdcpiRequestCb(nullptr),
    mOdcpiRequestActive(false),
    mOdcpiTimer(this),
    mOdcpiRequest(),
    mCallbackPriority(OdcpiPrioritytype::ODCPI_HANDLER_PRIORITY_LOW),
    mSystemStatus(SystemStatus::getInstance(mMsgTask)),
    mServerUrl(":"),
    mXtraObserver(mSystemStatus->getOsObserver(), mMsgTask),
    mBlockCPIInfo{},
    mDreIntEnabled(false),
    mLocSystemInfo{},
    mNfwCb(NULL),
    mPowerOn(false),
    mAllowFlpNetworkFixes(0),
    mGnssEnergyConsumedCb(nullptr),
    mPowerStateCb(nullptr),
    mIsE911Session(NULL),
    mGnssMbSvIdUsedInPosition{},
    mGnssMbSvIdUsedInPosAvail(false),
    mSupportNfwControl(true),
    mSystemPowerState(POWER_STATE_UNKNOWN),
    mIsMeasCorrInterfaceOpen(false),
    mIsAntennaInfoInterfaceOpened(false),
    mLastDeleteAidingDataTime(0),
    mDgnssState(0),
    mSendNmeaConsent(false),
    mDgnssLastNmeaBootTimeMilli(0),
    mNativeAgpsHandler(mSystemStatus->getOsObserver(), *this)
{
    LOC_LOGD("%s]: Constructor %p", __func__, this);
    mLocPositionMode.mode = LOC_POSITION_MODE_INVALID;

    pthread_condattr_t condAttr;
    pthread_condattr_init(&condAttr);
    pthread_condattr_setclock(&condAttr, CLOCK_MONOTONIC);
    pthread_cond_init(&mNiData.session.tCond, &condAttr);
    pthread_cond_init(&mNiData.sessionEs.tCond, &condAttr);
    pthread_condattr_destroy(&condAttr);

    /* Set ATL open/close callbacks */
    AgpsAtlOpenStatusCb atlOpenStatusCb =
            [this](int handle, int isSuccess, char* apn, uint32_t apnLen,
                    AGpsBearerType bearerType, AGpsExtType agpsType, LocApnTypeMask mask) {

                mLocApi->atlOpenStatus(
                        handle, isSuccess, apn, apnLen, bearerType, agpsType, mask);
            };
    AgpsAtlCloseStatusCb atlCloseStatusCb =
            [this](int handle, int isSuccess) {

                mLocApi->atlCloseStatus(handle, isSuccess);
            };
    mAgpsManager.registerATLCallbacks(atlOpenStatusCb, atlCloseStatusCb);

    readConfigCommand();
    initDefaultAgpsCommand();
    initEngHubProxyCommand();

    // at last step, let us inform adapater base that we are done
    // with initialization, e.g.: ready to process handleEngineUpEvent
    doneInit();
}

void
GnssAdapter::setControlCallbacksCommand(LocationControlCallbacks& controlCallbacks)
{
    struct MsgSetControlCallbacks : public LocMsg {
        GnssAdapter& mAdapter;
        const LocationControlCallbacks mControlCallbacks;
        inline MsgSetControlCallbacks(GnssAdapter& adapter,
                                      LocationControlCallbacks& controlCallbacks) :
            LocMsg(),
            mAdapter(adapter),
            mControlCallbacks(controlCallbacks) {}
        inline virtual void proc() const {
            mAdapter.setControlCallbacks(mControlCallbacks);
        }
    };

    sendMsg(new MsgSetControlCallbacks(*this, controlCallbacks));
}

void
GnssAdapter::convertOptions(LocPosMode& out, const TrackingOptions& trackingOptions)
{
    switch (trackingOptions.mode) {
    case GNSS_SUPL_MODE_MSB:
        out.mode = LOC_POSITION_MODE_MS_BASED;
        break;
    case GNSS_SUPL_MODE_MSA:
        out.mode = LOC_POSITION_MODE_MS_ASSISTED;
        break;
    default:
        out.mode = LOC_POSITION_MODE_STANDALONE;
        break;
    }
    out.share_position = true;
    out.min_interval = trackingOptions.minInterval;
    out.powerMode = trackingOptions.powerMode;
    out.timeBetweenMeasurements = trackingOptions.tbm;
}

bool
GnssAdapter::checkAndSetSPEToRunforNHz(TrackingOptions & out) {

    // first check if NHz meas is needed at all, if not, just return false
    // if a NHz capable engine is subscribed for NHz measurement or NHz positions,
    // always run the SPE only session at 100ms TBF.
    // If SPE session is already set to highest interval, no need to start it again.

    bool isSPERunningAtHighestInterval = false;

    if (!mNHzNeeded) {
        LOC_LOGd("No nHz session needed.");
    } else if (mSPEAlreadyRunningAtHighestInterval) {
        LOC_LOGd("SPE is already running at highest interval.");
        isSPERunningAtHighestInterval = true;
    } else if (out.minInterval > MIN_TRACKING_INTERVAL) {
        out.minInterval = MIN_TRACKING_INTERVAL;
        LOC_LOGd("nHz session is needed, starting SPE only session at 100ms TBF.");
        mSPEAlreadyRunningAtHighestInterval = true;
    }

    return isSPERunningAtHighestInterval;
}


void
GnssAdapter::convertLocation(Location& out, const UlpLocation& ulpLocation,
                             const GpsLocationExtended& locationExtended)
{
    memset(&out, 0, sizeof(Location));
    out.size = sizeof(Location);
    if (LOC_GPS_LOCATION_HAS_LAT_LONG & ulpLocation.gpsLocation.flags) {
        out.flags |= LOCATION_HAS_LAT_LONG_BIT;
        out.latitude = ulpLocation.gpsLocation.latitude;
        out.longitude = ulpLocation.gpsLocation.longitude;
    }
    if (LOC_GPS_LOCATION_HAS_ALTITUDE & ulpLocation.gpsLocation.flags) {
        out.flags |= LOCATION_HAS_ALTITUDE_BIT;
        out.altitude = ulpLocation.gpsLocation.altitude;
    }
    if (LOC_GPS_LOCATION_HAS_SPEED & ulpLocation.gpsLocation.flags) {
        out.flags |= LOCATION_HAS_SPEED_BIT;
        out.speed = ulpLocation.gpsLocation.speed;
    }
    if (LOC_GPS_LOCATION_HAS_BEARING & ulpLocation.gpsLocation.flags) {
        out.flags |= LOCATION_HAS_BEARING_BIT;
        out.bearing = ulpLocation.gpsLocation.bearing;
    }
    if (LOC_GPS_LOCATION_HAS_ACCURACY & ulpLocation.gpsLocation.flags) {
        out.flags |= LOCATION_HAS_ACCURACY_BIT;
        out.accuracy = ulpLocation.gpsLocation.accuracy;
    }
    if (GPS_LOCATION_EXTENDED_HAS_VERT_UNC & locationExtended.flags) {
        out.flags |= LOCATION_HAS_VERTICAL_ACCURACY_BIT;
        out.verticalAccuracy = locationExtended.vert_unc;
    }
    if (GPS_LOCATION_EXTENDED_HAS_SPEED_UNC & locationExtended.flags) {
        out.flags |= LOCATION_HAS_SPEED_ACCURACY_BIT;
        out.speedAccuracy = locationExtended.speed_unc;
    }
    if (GPS_LOCATION_EXTENDED_HAS_BEARING_UNC & locationExtended.flags) {
        out.flags |= LOCATION_HAS_BEARING_ACCURACY_BIT;
        out.bearingAccuracy = locationExtended.bearing_unc;
    }
    if (GPS_LOCATION_EXTENDED_HAS_CONFORMITY_INDEX & locationExtended.flags) {
        out.flags |= LOCATION_HAS_CONFORMITY_INDEX_BIT;
        out.conformityIndex = locationExtended.conformityIndex;
    }
    out.timestamp = ulpLocation.gpsLocation.timestamp;
    if (LOC_POS_TECH_MASK_SATELLITE & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_GNSS_BIT;
    }
    if (LOC_POS_TECH_MASK_CELLID & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_CELL_BIT;
    }
    if (LOC_POS_TECH_MASK_WIFI & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_WIFI_BIT;
    }
    if (LOC_POS_TECH_MASK_SENSORS & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_SENSORS_BIT;
    }
    if (LOC_POS_TECH_MASK_REFERENCE_LOCATION & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_REFERENCE_LOCATION_BIT;
    }
    if (LOC_POS_TECH_MASK_INJECTED_COARSE_POSITION & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_INJECTED_COARSE_POSITION_BIT;
    }
    if (LOC_POS_TECH_MASK_AFLT & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_AFLT_BIT;
    }
    if (LOC_POS_TECH_MASK_HYBRID & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_HYBRID_BIT;
    }
    if (LOC_POS_TECH_MASK_PPE & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_PPE_BIT;
    }
    if (LOC_POS_TECH_MASK_VEH & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_VEH_BIT;
    }
    if (LOC_POS_TECH_MASK_VIS & locationExtended.tech_mask) {
        out.techMask |= LOCATION_TECHNOLOGY_VIS_BIT;
    }
    if (LOC_NAV_MASK_DGNSS_CORRECTION & locationExtended.navSolutionMask) {
        out.techMask |= LOCATION_TECHNOLOGY_DGNSS_BIT;
    }

    if (LOC_GPS_LOCATION_HAS_SPOOF_MASK & ulpLocation.gpsLocation.flags) {
        out.flags |= LOCATION_HAS_SPOOF_MASK;
        out.spoofMask = ulpLocation.gpsLocation.spoof_mask;
    }
    if (LOC_GPS_LOCATION_HAS_ELAPSED_REAL_TIME & ulpLocation.gpsLocation.flags) {
        out.flags |= LOCATION_HAS_ELAPSED_REAL_TIME;
        out.elapsedRealTime = ulpLocation.gpsLocation.elapsedRealTime;
        out.elapsedRealTimeUnc = ulpLocation.gpsLocation.elapsedRealTimeUnc;
    }
}

/* This is utility routine that computes number of SV used
   in the fix from the svUsedIdsMask.
 */
#define MAX_SV_CNT_SUPPORTED_IN_ONE_CONSTELLATION 64
uint16_t GnssAdapter::getNumSvUsed(uint64_t svUsedIdsMask,
                                   int totalSvCntInThisConstellation)
{
    if (totalSvCntInThisConstellation > MAX_SV_CNT_SUPPORTED_IN_ONE_CONSTELLATION) {
        LOC_LOGe ("error: total SV count in this constellation %d exceeded limit of %d",
                  totalSvCntInThisConstellation, MAX_SV_CNT_SUPPORTED_IN_ONE_CONSTELLATION);
        return 0;
    }

    uint16_t numSvUsed = 0;
    uint64_t mask = 0x1;
    for (int i = 0; i < totalSvCntInThisConstellation; i++) {
        if (svUsedIdsMask & mask) {
            numSvUsed++;
        }
        mask <<= 1;
    }

    return numSvUsed;
}

void
GnssAdapter::convertLocationInfo(GnssLocationInfoNotification& out,
                                 const GpsLocationExtended& locationExtended,
                                 enum loc_sess_status status)
{
    out.size = sizeof(GnssLocationInfoNotification);
    if (GPS_LOCATION_EXTENDED_HAS_ALTITUDE_MEAN_SEA_LEVEL & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_ALTITUDE_MEAN_SEA_LEVEL_BIT;
        out.altitudeMeanSeaLevel = locationExtended.altitudeMeanSeaLevel;
    }
    if (GPS_LOCATION_EXTENDED_HAS_EXT_DOP & locationExtended.flags) {
        out.flags |= (GNSS_LOCATION_INFO_DOP_BIT|GNSS_LOCATION_INFO_EXT_DOP_BIT);
        out.pdop = locationExtended.extDOP.PDOP;
        out.hdop = locationExtended.extDOP.HDOP;
        out.vdop = locationExtended.extDOP.VDOP;
        out.gdop = locationExtended.extDOP.GDOP;
        out.tdop = locationExtended.extDOP.TDOP;
    } else if (GPS_LOCATION_EXTENDED_HAS_DOP & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_DOP_BIT;
        out.pdop = locationExtended.pdop;
        out.hdop = locationExtended.hdop;
        out.vdop = locationExtended.vdop;
    }
    if (GPS_LOCATION_EXTENDED_HAS_MAG_DEV & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_MAGNETIC_DEVIATION_BIT;
        out.magneticDeviation = locationExtended.magneticDeviation;
    }
    if (GPS_LOCATION_EXTENDED_HAS_HOR_RELIABILITY & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_HOR_RELIABILITY_BIT;
        switch (locationExtended.horizontal_reliability) {
            case LOC_RELIABILITY_VERY_LOW:
                out.horReliability = LOCATION_RELIABILITY_VERY_LOW;
                break;
            case LOC_RELIABILITY_LOW:
                out.horReliability = LOCATION_RELIABILITY_LOW;
                break;
            case LOC_RELIABILITY_MEDIUM:
                out.horReliability = LOCATION_RELIABILITY_MEDIUM;
                break;
            case LOC_RELIABILITY_HIGH:
                out.horReliability = LOCATION_RELIABILITY_HIGH;
                break;
            default:
                out.horReliability = LOCATION_RELIABILITY_NOT_SET;
                break;
        }
    }
    if (GPS_LOCATION_EXTENDED_HAS_VERT_RELIABILITY & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_VER_RELIABILITY_BIT;
        switch (locationExtended.vertical_reliability) {
            case LOC_RELIABILITY_VERY_LOW:
                out.verReliability = LOCATION_RELIABILITY_VERY_LOW;
                break;
            case LOC_RELIABILITY_LOW:
                out.verReliability = LOCATION_RELIABILITY_LOW;
                break;
            case LOC_RELIABILITY_MEDIUM:
                out.verReliability = LOCATION_RELIABILITY_MEDIUM;
                break;
            case LOC_RELIABILITY_HIGH:
                out.verReliability = LOCATION_RELIABILITY_HIGH;
                break;
            default:
                out.verReliability = LOCATION_RELIABILITY_NOT_SET;
                break;
        }
    }
    if (GPS_LOCATION_EXTENDED_HAS_HOR_ELIP_UNC_MAJOR & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_HOR_ACCURACY_ELIP_SEMI_MAJOR_BIT;
        out.horUncEllipseSemiMajor = locationExtended.horUncEllipseSemiMajor;
    }
    if (GPS_LOCATION_EXTENDED_HAS_HOR_ELIP_UNC_MINOR & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_HOR_ACCURACY_ELIP_SEMI_MINOR_BIT;
        out.horUncEllipseSemiMinor = locationExtended.horUncEllipseSemiMinor;
    }
    if (GPS_LOCATION_EXTENDED_HAS_HOR_ELIP_UNC_AZIMUTH & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_HOR_ACCURACY_ELIP_AZIMUTH_BIT;
        out.horUncEllipseOrientAzimuth = locationExtended.horUncEllipseOrientAzimuth;
    }
    if (GPS_LOCATION_EXTENDED_HAS_NORTH_STD_DEV & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_NORTH_STD_DEV_BIT;
        out.northStdDeviation = locationExtended.northStdDeviation;
    }
    if (GPS_LOCATION_EXTENDED_HAS_EAST_STD_DEV & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_EAST_STD_DEV_BIT;
        out.eastStdDeviation = locationExtended.eastStdDeviation;
    }
    if (GPS_LOCATION_EXTENDED_HAS_NORTH_VEL & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_NORTH_VEL_BIT;
        out.northVelocity = locationExtended.northVelocity;
    }
    if (GPS_LOCATION_EXTENDED_HAS_NORTH_VEL_UNC & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_NORTH_VEL_UNC_BIT;
        out.northVelocityStdDeviation = locationExtended.northVelocityStdDeviation;
    }
    if (GPS_LOCATION_EXTENDED_HAS_EAST_VEL & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_EAST_VEL_BIT;
        out.eastVelocity = locationExtended.eastVelocity;
    }
    if (GPS_LOCATION_EXTENDED_HAS_EAST_VEL_UNC & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_EAST_VEL_UNC_BIT;
        out.eastVelocityStdDeviation = locationExtended.eastVelocityStdDeviation;
    }
    if (GPS_LOCATION_EXTENDED_HAS_UP_VEL & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_UP_VEL_BIT;
        out.upVelocity = locationExtended.upVelocity;
    }
    if (GPS_LOCATION_EXTENDED_HAS_UP_VEL_UNC & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_UP_VEL_UNC_BIT;
        out.upVelocityStdDeviation = locationExtended.upVelocityStdDeviation;
    }
    if (GPS_LOCATION_EXTENDED_HAS_GNSS_SV_USED_DATA & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_GNSS_SV_USED_DATA_BIT;
        out.svUsedInPosition.gpsSvUsedIdsMask =
                locationExtended.gnss_sv_used_ids.gps_sv_used_ids_mask;
        out.svUsedInPosition.gloSvUsedIdsMask =
                locationExtended.gnss_sv_used_ids.glo_sv_used_ids_mask;
        out.svUsedInPosition.galSvUsedIdsMask =
                locationExtended.gnss_sv_used_ids.gal_sv_used_ids_mask;
        out.svUsedInPosition.bdsSvUsedIdsMask =
                locationExtended.gnss_sv_used_ids.bds_sv_used_ids_mask;
        out.svUsedInPosition.qzssSvUsedIdsMask =
                locationExtended.gnss_sv_used_ids.qzss_sv_used_ids_mask;
        out.svUsedInPosition.navicSvUsedIdsMask =
                locationExtended.gnss_sv_used_ids.navic_sv_used_ids_mask;

        out.flags |= GNSS_LOCATION_INFO_NUM_SV_USED_IN_POSITION_BIT;
        out.numSvUsedInPosition = getNumSvUsed(out.svUsedInPosition.gpsSvUsedIdsMask,
                                               GPS_SV_PRN_MAX - GPS_SV_PRN_MIN + 1);
        out.numSvUsedInPosition += getNumSvUsed(out.svUsedInPosition.gloSvUsedIdsMask,
                                                GLO_SV_PRN_MAX - GLO_SV_PRN_MIN + 1);
        out.numSvUsedInPosition += getNumSvUsed(out.svUsedInPosition.qzssSvUsedIdsMask,
                                                QZSS_SV_PRN_MAX - QZSS_SV_PRN_MIN + 1);
        out.numSvUsedInPosition += getNumSvUsed(out.svUsedInPosition.bdsSvUsedIdsMask,
                                                BDS_SV_PRN_MAX - BDS_SV_PRN_MIN + 1);
        out.numSvUsedInPosition += getNumSvUsed(out.svUsedInPosition.galSvUsedIdsMask,
                                                GAL_SV_PRN_MAX - GAL_SV_PRN_MIN + 1);
        out.numSvUsedInPosition += getNumSvUsed(out.svUsedInPosition.navicSvUsedIdsMask,
                                                NAVIC_SV_PRN_MAX - NAVIC_SV_PRN_MIN + 1);

        out.numOfMeasReceived = locationExtended.numOfMeasReceived;
        for (int idx =0; idx < locationExtended.numOfMeasReceived; idx++) {
            out.measUsageInfo[idx].gnssSignalType =
                    locationExtended.measUsageInfo[idx].gnssSignalType;
            out.measUsageInfo[idx].gnssSvId =
                    locationExtended.measUsageInfo[idx].gnssSvId;
            out.measUsageInfo[idx].gnssConstellation =
                    locationExtended.measUsageInfo[idx].gnssConstellation;
        }
    }
    if (GPS_LOCATION_EXTENDED_HAS_NAV_SOLUTION_MASK & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_NAV_SOLUTION_MASK_BIT;
        out.navSolutionMask = locationExtended.navSolutionMask;
    }
    if (GPS_LOCATION_EXTENDED_HAS_POS_DYNAMICS_DATA & locationExtended.flags) {
        out.flags |= GPS_LOCATION_EXTENDED_HAS_POS_DYNAMICS_DATA;
        if (locationExtended.bodyFrameData.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_LONG_ACCEL_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_LONG_ACCEL_BIT;
        }
        if (locationExtended.bodyFrameData.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_LAT_ACCEL_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_LAT_ACCEL_BIT;
        }
        if (locationExtended.bodyFrameData.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_VERT_ACCEL_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_VERT_ACCEL_BIT;
        }
        if (locationExtended.bodyFrameData.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_YAW_RATE_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_YAW_RATE_BIT;
        }
        if (locationExtended.bodyFrameData.bodyFrameDataMask &
            LOCATION_NAV_DATA_HAS_PITCH_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_PITCH_BIT;
        }

        if (locationExtended.bodyFrameData.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_LONG_ACCEL_UNC_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_LONG_ACCEL_UNC_BIT;
        }
        if (locationExtended.bodyFrameData.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_LAT_ACCEL_UNC_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_LAT_ACCEL_UNC_BIT;
        }
        if (locationExtended.bodyFrameData.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_VERT_ACCEL_UNC_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_VERT_ACCEL_UNC_BIT;
        }
        if (locationExtended.bodyFrameData.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_YAW_RATE_UNC_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_YAW_RATE_UNC_BIT;
        }
        if (locationExtended.bodyFrameData.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_PITCH_UNC_BIT) {
            out.bodyFrameData.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_PITCH_UNC_BIT;
        }

        if (locationExtended.bodyFrameDataExt.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_PITCH_RATE_BIT) {
            out.bodyFrameDataExt.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_PITCH_RATE_BIT;
        }
        if (locationExtended.bodyFrameDataExt.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_PITCH_RATE_UNC_BIT) {
            out.bodyFrameDataExt.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_PITCH_RATE_UNC_BIT;
        }
        if (locationExtended.bodyFrameDataExt.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_ROLL_BIT) {
            out.bodyFrameDataExt.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_ROLL_BIT;
        }
        if (locationExtended.bodyFrameDataExt.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_ROLL_UNC_BIT) {
            out.bodyFrameDataExt.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_ROLL_UNC_BIT;
        }
        if (locationExtended.bodyFrameDataExt.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_ROLL_RATE_BIT) {
            out.bodyFrameDataExt.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_ROLL_RATE_BIT;
        }
        if (locationExtended.bodyFrameDataExt.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_ROLL_RATE_UNC_BIT) {
            out.bodyFrameDataExt.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_ROLL_RATE_UNC_BIT;
        }
        if (locationExtended.bodyFrameDataExt.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_YAW_BIT) {
            out.bodyFrameDataExt.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_YAW_BIT;
        }
        if (locationExtended.bodyFrameDataExt.bodyFrameDataMask &
                LOCATION_NAV_DATA_HAS_YAW_UNC_BIT) {
            out.bodyFrameDataExt.bodyFrameDataMask |= LOCATION_NAV_DATA_HAS_YAW_UNC_BIT;
        }

        out.bodyFrameData.longAccel = locationExtended.bodyFrameData.longAccel;
        out.bodyFrameData.latAccel = locationExtended.bodyFrameData.latAccel;
        out.bodyFrameData.vertAccel = locationExtended.bodyFrameData.vertAccel;
        out.bodyFrameData.yawRate = locationExtended.bodyFrameData.yawRate;
        out.bodyFrameData.pitch = locationExtended.bodyFrameData.pitch;
        out.bodyFrameData.longAccelUnc = locationExtended.bodyFrameData.longAccelUnc;
        out.bodyFrameData.latAccelUnc  = locationExtended.bodyFrameData.latAccelUnc;
        out.bodyFrameData.vertAccelUnc = locationExtended.bodyFrameData.vertAccelUnc;
        out.bodyFrameData.yawRateUnc   = locationExtended.bodyFrameData.yawRateUnc;
        out.bodyFrameData.pitchUnc     = locationExtended.bodyFrameData.pitchUnc;

        out.bodyFrameDataExt.pitchRate    = locationExtended.bodyFrameDataExt.pitchRate;
        out.bodyFrameDataExt.pitchRateUnc = locationExtended.bodyFrameDataExt.pitchRateUnc;
        out.bodyFrameDataExt.roll         = locationExtended.bodyFrameDataExt.roll;
        out.bodyFrameDataExt.rollUnc      = locationExtended.bodyFrameDataExt.rollUnc;
        out.bodyFrameDataExt.rollRate     = locationExtended.bodyFrameDataExt.rollRate;
        out.bodyFrameDataExt.rollRateUnc  = locationExtended.bodyFrameDataExt.rollRateUnc;
        out.bodyFrameDataExt.yaw          = locationExtended.bodyFrameDataExt.yaw;
        out.bodyFrameDataExt.yawUnc       = locationExtended.bodyFrameDataExt.yawUnc;
    }

    // Validity of this structure is established from the timeSrc of the GnssSystemTime structure.
    out.gnssSystemTime = locationExtended.gnssSystemTime;

    if (GPS_LOCATION_EXTENDED_HAS_LEAP_SECONDS & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_LEAP_SECONDS_BIT;
        out.leapSeconds = locationExtended.leapSeconds;
    }

    if (GPS_LOCATION_EXTENDED_HAS_TIME_UNC & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_TIME_UNC_BIT;
        out.timeUncMs = locationExtended.timeUncMs;
    }

    if (GPS_LOCATION_EXTENDED_HAS_CALIBRATION_CONFIDENCE & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_CALIBRATION_CONFIDENCE_BIT;
        out.calibrationConfidence = locationExtended.calibrationConfidence;
    }

    if (GPS_LOCATION_EXTENDED_HAS_CALIBRATION_STATUS & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_CALIBRATION_STATUS_BIT;
        out.calibrationStatus = locationExtended.calibrationStatus;
    }

    if (GPS_LOCATION_EXTENDED_HAS_OUTPUT_ENG_TYPE & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_OUTPUT_ENG_TYPE_BIT;
        out.locOutputEngType = locationExtended.locOutputEngType;
    }

    if (GPS_LOCATION_EXTENDED_HAS_OUTPUT_ENG_MASK & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_OUTPUT_ENG_MASK_BIT;
        out.locOutputEngMask = locationExtended.locOutputEngMask;
    }

    if (GPS_LOCATION_EXTENDED_HAS_CONFORMITY_INDEX & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_CONFORMITY_INDEX_BIT;
        out.conformityIndex = locationExtended.conformityIndex;
    }

    if (GPS_LOCATION_EXTENDED_HAS_LLA_VRP_BASED & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_LLA_VRP_BASED_BIT;
        out.llaVRPBased = locationExtended.llaVRPBased;
    }

    if (GPS_LOCATION_EXTENDED_HAS_ENU_VELOCITY_LLA_VRP_BASED & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_ENU_VELOCITY_VRP_BASED_BIT;
        // copy over east, north and up vrp based velocity
        out.enuVelocityVRPBased[0] = locationExtended.enuVelocityVRPBased[0];
        out.enuVelocityVRPBased[1] = locationExtended.enuVelocityVRPBased[1];
        out.enuVelocityVRPBased[2] = locationExtended.enuVelocityVRPBased[2];
    }

    if (GPS_LOCATION_EXTENDED_HAS_DR_SOLUTION_STATUS_MASK & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_DR_SOLUTION_STATUS_MASK_BIT;
        out.drSolutionStatusMask = locationExtended.drSolutionStatusMask;
    }

    if (GPS_LOCATION_EXTENDED_HAS_ALTITUDE_ASSUMED & locationExtended.flags) {
        out.flags |= GNSS_LOCATION_INFO_ALTITUDE_ASSUMED_BIT;
        out.altitudeAssumed = locationExtended.altitudeAssumed;
    }

    out.flags |= GNSS_LOCATION_INFO_SESSION_STATUS_BIT;
    out.sessionStatus = status;
}

inline uint32_t
GnssAdapter::convertSuplVersion(const GnssConfigSuplVersion suplVersion)
{
    switch (suplVersion) {
        case GNSS_CONFIG_SUPL_VERSION_2_0_4:
            return 0x00020004;
        case GNSS_CONFIG_SUPL_VERSION_2_0_0:
            return 0x00020000;
        case GNSS_CONFIG_SUPL_VERSION_2_0_2:
            return 0x00020002;
        case GNSS_CONFIG_SUPL_VERSION_1_0_0:
        default:
            return 0x00010000;
    }
}

uint32_t
GnssAdapter::convertLppeCp(const GnssConfigLppeControlPlaneMask lppeControlPlaneMask)
{
    uint32_t mask = 0;
    if (GNSS_CONFIG_LPPE_CONTROL_PLANE_DBH_BIT & lppeControlPlaneMask) {
        mask |= (1<<0);
    }
    if (GNSS_CONFIG_LPPE_CONTROL_PLANE_WLAN_AP_MEASUREMENTS_BIT & lppeControlPlaneMask) {
        mask |= (1<<1);
    }
    if (GNSS_CONFIG_LPPE_CONTROL_PLANE_SRN_AP_MEASUREMENTS_BIT & lppeControlPlaneMask) {
        mask |= (1<<2);
    }
    if (GNSS_CONFIG_LPPE_CONTROL_PLANE_SENSOR_BARO_MEASUREMENTS_BIT & lppeControlPlaneMask) {
        mask |= (1<<3);
    }
    return mask;
}

uint32_t
GnssAdapter::convertLppeUp(const GnssConfigLppeUserPlaneMask lppeUserPlaneMask)
{
    uint32_t mask = 0;
    if (GNSS_CONFIG_LPPE_USER_PLANE_DBH_BIT & lppeUserPlaneMask) {
        mask |= (1<<0);
    }
    if (GNSS_CONFIG_LPPE_USER_PLANE_WLAN_AP_MEASUREMENTS_BIT & lppeUserPlaneMask) {
        mask |= (1<<1);
    }
    if (GNSS_CONFIG_LPPE_USER_PLANE_SRN_AP_MEASUREMENTS_BIT & lppeUserPlaneMask) {
        mask |= (1<<2);
    }
    if (GNSS_CONFIG_LPPE_USER_PLANE_SENSOR_BARO_MEASUREMENTS_BIT & lppeUserPlaneMask) {
        mask |= (1<<3);
    }
    return mask;
}

uint32_t
GnssAdapter::convertAGloProt(const GnssConfigAGlonassPositionProtocolMask aGloPositionProtocolMask)
{
    uint32_t mask = 0;
    if (GNSS_CONFIG_RRC_CONTROL_PLANE_BIT & aGloPositionProtocolMask) {
        mask |= (1<<0);
    }
    if (GNSS_CONFIG_RRLP_USER_PLANE_BIT & aGloPositionProtocolMask) {
        mask |= (1<<1);
    }
    if (GNSS_CONFIG_LLP_USER_PLANE_BIT & aGloPositionProtocolMask) {
        mask |= (1<<2);
    }
    if (GNSS_CONFIG_LLP_CONTROL_PLANE_BIT & aGloPositionProtocolMask) {
        mask |= (1<<3);
    }
    return mask;
}

uint32_t
GnssAdapter::convertEP4ES(const GnssConfigEmergencyPdnForEmergencySupl emergencyPdnForEmergencySupl)
{
    switch (emergencyPdnForEmergencySupl) {
       case GNSS_CONFIG_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_YES:
           return 1;
       case GNSS_CONFIG_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_NO:
       default:
           return 0;
    }
}

uint32_t
GnssAdapter::convertSuplEs(const GnssConfigSuplEmergencyServices suplEmergencyServices)
{
    switch (suplEmergencyServices) {
       case GNSS_CONFIG_SUPL_EMERGENCY_SERVICES_YES:
           return 1;
       case GNSS_CONFIG_SUPL_EMERGENCY_SERVICES_NO:
       default:
           return 0;
    }
}

uint32_t
GnssAdapter::convertSuplMode(const GnssConfigSuplModeMask suplModeMask)
{
    uint32_t mask = 0;
    if (GNSS_CONFIG_SUPL_MODE_MSB_BIT & suplModeMask) {
        mask |= (1<<0);
    }
    if (GNSS_CONFIG_SUPL_MODE_MSA_BIT & suplModeMask) {
        mask |= (1<<1);
    }
    return mask;
}

void
GnssAdapter::readConfigCommand()
{
    LOC_LOGD("%s]: ", __func__);

    struct MsgReadConfig : public LocMsg {
        GnssAdapter* mAdapter;
        ContextBase& mContext;
        inline MsgReadConfig(GnssAdapter* adapter,
                             ContextBase& context) :
            LocMsg(),
            mAdapter(adapter),
            mContext(context) {}
        inline virtual void proc() const {
            static bool confReadDone = false;
            if (!confReadDone) {
                confReadDone = true;
                // reads config into mContext->mGps_conf
                mContext.readConfig();

                uint32_t allowFlpNetworkFixes = 0;
                static const loc_param_s_type flp_conf_param_table[] =
                {
                    {"ALLOW_NETWORK_FIXES", &allowFlpNetworkFixes, NULL, 'n'},
                };
                UTIL_READ_CONF(LOC_PATH_FLP_CONF, flp_conf_param_table);
                LOC_LOGd("allowFlpNetworkFixes %u", allowFlpNetworkFixes);
                mAdapter->setAllowFlpNetworkFixes(allowFlpNetworkFixes);
            }
        }
    };

    if (mContext != NULL) {
        sendMsg(new MsgReadConfig(this, *mContext));
    }
}

void
GnssAdapter::setSuplHostServer(const char* server, int port, LocServerType type)
{
    if (ContextBase::mGps_conf.AGPS_CONFIG_INJECT) {
        char serverUrl[MAX_URL_LEN] = {};
        int32_t length = -1;
        const char noHost[] = "NONE";

        if ((NULL == server) || (server[0] == 0) ||
                (strncasecmp(noHost, server, sizeof(noHost)) == 0)) {
            serverUrl[0] = '\0';
            length = 0;
        } else if (port > 0) {
            length = snprintf(serverUrl, sizeof(serverUrl), "%s:%u", server, port);
        }
        if (LOC_AGPS_SUPL_SERVER != type && LOC_AGPS_MO_SUPL_SERVER != type) {
            LOC_LOGe("Invalid type=%d", type);
        } else if (length >= 0) {
            if (LOC_AGPS_SUPL_SERVER == type) {
                getServerUrl().assign(serverUrl);
                strlcpy(ContextBase::mGps_conf.SUPL_HOST,
                        (nullptr == server) ? serverUrl : server,
                        LOC_MAX_PARAM_STRING);
                ContextBase::mGps_conf.SUPL_PORT = port;
            } else {
                if (strncasecmp(getMoServerUrl().c_str(), serverUrl, sizeof(serverUrl)) != 0) {
                    getMoServerUrl().assign(serverUrl);
                }
            }
        }
    }
}

void
GnssAdapter::setConfig()
{
    LOC_LOGD("%s]: ", __func__);

    // set nmea mask type
    uint32_t mask = 0;
    if (NMEA_PROVIDER_MP == ContextBase::mGps_conf.NMEA_PROVIDER) {
        mask |= LOC_NMEA_ALL_GENERAL_SUPPORTED_MASK;
        if (ContextBase::mGps_conf.NMEA_TAG_BLOCK_GROUPING_ENABLED) {
            mask |= LOC_NMEA_MASK_TAGBLOCK_V02;
        }
    }
    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_DEBUG_NMEA_V02)) {
        mask |= LOC_NMEA_MASK_DEBUG_V02;
    }
    if (mNmeaMask != mask) {
        mNmeaMask = mask;
        if (mNmeaMask) {
            for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
                if ((it->second.gnssNmeaCb != nullptr)) {
                    updateEvtMask(LOC_API_ADAPTER_BIT_NMEA_1HZ_REPORT,
                                  LOC_REGISTRATION_MASK_ENABLED);
                    break;
                }
            }
        }
    }

    std::string oldMoServerUrl = getMoServerUrl();
    setSuplHostServer(ContextBase::mGps_conf.SUPL_HOST,
                      ContextBase::mGps_conf.SUPL_PORT,
                      LOC_AGPS_SUPL_SERVER);
    setSuplHostServer(ContextBase::mGps_conf.MO_SUPL_HOST,
                      ContextBase::mGps_conf.MO_SUPL_PORT,
                      LOC_AGPS_MO_SUPL_SERVER);

    // inject the configurations into modem
    loc_gps_cfg_s gpsConf = ContextBase::mGps_conf;
    loc_sap_cfg_s_type sapConf = ContextBase::mSap_conf;

    //cache the injected configuration with GnssConfigRequested struct
    GnssConfig gnssConfigRequested = {};
    gnssConfigRequested.flags |= GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT |
            GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT;
    /* Here we process an SSR. We need to set the GPS_LOCK to the proper values, as follows:
    1. Q behavior. This is identified by mSupportNfwControl being 1. In this case
    ContextBase::mGps_conf.GPS_LOCK is a "state", meaning it should reflect the
    NV value. Therefore we will set the NV to ContextBase::mGps_conf.GPS_LOCK
    2. P behavior. This is identified by mSupportNfwControl being 0. In this case
    ContextBase::mGps_conf.GPS_LOCK is a "configuration", meaning it should hold
    the "mask" for NI. There are two subcases:
    a. Location enabled in GUI (1 == getAfwControlId()). We need to set
    the NV to GNSS_CONFIG_GPS_LOCK_NONE (both MO and NI enabled)
    b. Location disabled in GUI (0 == getAfwControlId()). We need to set
    the NV to ContextBase::mGps_conf.GPS_LOCK (the "mask", which is SIM-card
    specific)
    */
    if (mSupportNfwControl || (0 == getAfwControlId())) {
        gnssConfigRequested.gpsLock = gpsConf.GPS_LOCK;
    } else {
        gnssConfigRequested.gpsLock = GNSS_CONFIG_GPS_LOCK_NONE;
    }
    gnssConfigRequested.flags |= GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT |
            GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT |
            GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT |
            GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT;
    gnssConfigRequested.suplVersion = mLocApi->convertSuplVersion(gpsConf.SUPL_VER);
    gnssConfigRequested.lppProfileMask = gpsConf.LPP_PROFILE;
    gnssConfigRequested.aGlonassPositionProtocolMask = gpsConf.A_GLONASS_POS_PROTOCOL_SELECT;
    if (gpsConf.LPPE_CP_TECHNOLOGY) {
        gnssConfigRequested.flags |= GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT;
        gnssConfigRequested.lppeControlPlaneMask =
                mLocApi->convertLppeCp(gpsConf.LPPE_CP_TECHNOLOGY);
    }

    if (gpsConf.LPPE_UP_TECHNOLOGY) {
        gnssConfigRequested.flags |= GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT;
        gnssConfigRequested.lppeUserPlaneMask =
                mLocApi->convertLppeUp(gpsConf.LPPE_UP_TECHNOLOGY);
    }
    gnssConfigRequested.blacklistedSvIds.assign(mBlacklistedSvIds.begin(),
                                                mBlacklistedSvIds.end());
    mLocApi->sendMsg(new LocApiMsg(
            [this, gpsConf, sapConf, oldMoServerUrl, gnssConfigRequested] () mutable {
        gnssUpdateConfig(oldMoServerUrl, gnssConfigRequested, gnssConfigRequested);

        // set nmea mask type
        uint32_t mask = 0;
        if (NMEA_PROVIDER_MP == gpsConf.NMEA_PROVIDER) {
            mask |= LOC_NMEA_ALL_GENERAL_SUPPORTED_MASK;
            if (gpsConf.NMEA_TAG_BLOCK_GROUPING_ENABLED) {
                mask |= LOC_NMEA_MASK_TAGBLOCK_V02;
            }
        }
        if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_DEBUG_NMEA_V02)) {
            mask |= LOC_NMEA_MASK_DEBUG_V02;
        }

        if (mask != 0) {
            mLocApi->setNMEATypesSync(mask);
        }

        // load tunc configuration from config file on first boot-up,
        // e.g.: adapter.mLocConfigInfo.tuncConfigInfo.isValid is false
        if (mLocConfigInfo.tuncConfigInfo.isValid == false) {
            mLocConfigInfo.tuncConfigInfo.isValid = true;
            mLocConfigInfo.tuncConfigInfo.enable =
                    (gpsConf.CONSTRAINED_TIME_UNCERTAINTY_ENABLED == 1);
            mLocConfigInfo.tuncConfigInfo.tuncThresholdMs =
                   (float)gpsConf.CONSTRAINED_TIME_UNCERTAINTY_THRESHOLD;
            mLocConfigInfo.tuncConfigInfo.energyBudget =
                   gpsConf.CONSTRAINED_TIME_UNCERTAINTY_ENERGY_BUDGET;
        }

        mLocApi->setConstrainedTuncMode(
                mLocConfigInfo.tuncConfigInfo.enable,
                mLocConfigInfo.tuncConfigInfo.tuncThresholdMs,
                mLocConfigInfo.tuncConfigInfo.energyBudget);

        // load pace configuration from config file on first boot-up,
        // e.g.: adapter.mLocConfigInfo.paceConfigInfo.isValid is false
        if (mLocConfigInfo.paceConfigInfo.isValid == false) {
            mLocConfigInfo.paceConfigInfo.isValid = true;
            mLocConfigInfo.paceConfigInfo.enable =
                    (gpsConf.POSITION_ASSISTED_CLOCK_ESTIMATOR_ENABLED==1);
        }
        mLocApi->setPositionAssistedClockEstimatorMode(
                mLocConfigInfo.paceConfigInfo.enable);

        // we do not support control robust location from gps.conf
        if (mLocConfigInfo.robustLocationConfigInfo.isValid == true) {
            mLocApi->configRobustLocation(
                    mLocConfigInfo.robustLocationConfigInfo.enable,
                    mLocConfigInfo.robustLocationConfigInfo.enableFor911);
        }

        if (sapConf.GYRO_BIAS_RANDOM_WALK_VALID ||
            sapConf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY_VALID ||
            sapConf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY_VALID ||
            sapConf.RATE_RANDOM_WALK_SPECTRAL_DENSITY_VALID ||
            sapConf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY_VALID ) {
            mLocApi->setSensorPropertiesSync(
                sapConf.GYRO_BIAS_RANDOM_WALK_VALID,
                sapConf.GYRO_BIAS_RANDOM_WALK,
                sapConf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY_VALID,
                sapConf.ACCEL_RANDOM_WALK_SPECTRAL_DENSITY,
                sapConf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY_VALID,
                sapConf.ANGLE_RANDOM_WALK_SPECTRAL_DENSITY,
                sapConf.RATE_RANDOM_WALK_SPECTRAL_DENSITY_VALID,
                sapConf.RATE_RANDOM_WALK_SPECTRAL_DENSITY,
                sapConf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY_VALID,
                sapConf.VELOCITY_RANDOM_WALK_SPECTRAL_DENSITY);
        }
        mLocApi->setSensorPerfControlConfigSync(
                sapConf.SENSOR_CONTROL_MODE,
                sapConf.SENSOR_ACCEL_SAMPLES_PER_BATCH,
                sapConf.SENSOR_ACCEL_BATCHES_PER_SEC,
                sapConf.SENSOR_GYRO_SAMPLES_PER_BATCH,
                sapConf.SENSOR_GYRO_BATCHES_PER_SEC,
                sapConf.SENSOR_ACCEL_SAMPLES_PER_BATCH_HIGH,
                sapConf.SENSOR_ACCEL_BATCHES_PER_SEC_HIGH,
                sapConf.SENSOR_GYRO_SAMPLES_PER_BATCH_HIGH,
                sapConf.SENSOR_GYRO_BATCHES_PER_SEC_HIGH,
                sapConf.SENSOR_ALGORITHM_CONFIG_MASK);
    } ));
    // deal with Measurement Corrections
    if (true == mIsMeasCorrInterfaceOpen) {
        initMeasCorr(true);
    }
}

std::vector<LocationError> GnssAdapter::gnssUpdateConfig(const std::string& oldMoServerUrl,
        GnssConfig& gnssConfigRequested, GnssConfig& gnssConfigNeedEngineUpdate, size_t count) {
    loc_gps_cfg_s gpsConf = ContextBase::mGps_conf;
    size_t index = 0;
    LocationError err = LOCATION_ERROR_SUCCESS;
    std::vector<LocationError> errsList = {err};
    if (count > 0) {
        errsList.insert(errsList.begin(), count, LOCATION_ERROR_SUCCESS);
    }

    std::string serverUrl = getServerUrl();
    std::string moServerUrl = getMoServerUrl();

    int serverUrlLen = serverUrl.length();
    int moServerUrlLen = moServerUrl.length();

    if (!ContextBase::mGps_conf.AGPS_CONFIG_INJECT) {
        LOC_LOGd("AGPS_CONFIG_INJECT is 0. Not setting flags for AGPS configurations");
        gnssConfigRequested.flags &= ~(GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT |
                GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT |
                GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT |
                GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT);
    }

    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
        if (gnssConfigNeedEngineUpdate.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
            err = mLocApi->setGpsLockSync(gnssConfigRequested.gpsLock);
            if (index < count) {
                errsList[index] = err;
            }
        }
        index++;
    }

    if (gnssConfigRequested.flags &
            GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
        if (gnssConfigNeedEngineUpdate.flags &
                GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
            if (gnssConfigNeedEngineUpdate.assistanceServer.type ==
                    GNSS_ASSISTANCE_TYPE_SUPL) {
                err = mLocApi->setServerSync(
                        serverUrl.c_str(), serverUrlLen, LOC_AGPS_SUPL_SERVER);
                if (index < count) {
                    errsList[index] = err;
                }
                if (0 != oldMoServerUrl.compare(moServerUrl)) {
                    LocationError locErr =
                        mLocApi->setServerSync(moServerUrl.c_str(),
                                moServerUrlLen,
                                LOC_AGPS_MO_SUPL_SERVER);
                    if (locErr != LOCATION_ERROR_SUCCESS) {
                        LOC_LOGe("Error while setting MO SUPL_HOST server:%s",
                                moServerUrl.c_str());
                    }
                }
            } else if (gnssConfigNeedEngineUpdate.assistanceServer.type ==
                    GNSS_ASSISTANCE_TYPE_C2K) {
                struct in_addr addr;
                struct hostent* hp;
                bool resolveAddrSuccess = true;

                hp = gethostbyname(
                        gnssConfigNeedEngineUpdate.assistanceServer.hostName);
                if (hp != NULL) { /* DNS OK */
                    memcpy(&addr, hp->h_addr_list[0], hp->h_length);
                } else {
                    /* Try IP representation */
                    if (inet_aton(
                                gnssConfigNeedEngineUpdate.assistanceServer.hostName,
                                &addr) == 0) {
                        /* IP not valid */
                        LOC_LOGE("%s]: hostname '%s' cannot be resolved ",
                                __func__,
                                gnssConfigNeedEngineUpdate.assistanceServer.hostName);
                        if (index < count) {
                            errsList[index] = LOCATION_ERROR_INVALID_PARAMETER;
                        }
                    } else {
                        resolveAddrSuccess = false;
                    }
                }

                if (resolveAddrSuccess) {
                    unsigned int ip = htonl(addr.s_addr);
                    err = mLocApi->setServerSync(ip,
                            gnssConfigNeedEngineUpdate.assistanceServer.port,
                            LOC_AGPS_CDMA_PDE_SERVER);
                    if (index < count) {
                        errsList[index] = err;
                    }
                }
            }
        }
        index++;
    }

    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
        if (gnssConfigNeedEngineUpdate.flags &
                GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
            err = mLocApi->setSUPLVersionSync(gnssConfigRequested.suplVersion);
            if (index < count) {
                errsList[index] = err;
            }
        }
        index++;
    }

    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
        if (gnssConfigNeedEngineUpdate.flags &
                GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
            err = mLocApi->setLPPConfigSync(gnssConfigRequested.lppProfileMask);
            if (index < count) {
                errsList[index] = err;
            }
        }
        index++;
    }

    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
        if (gnssConfigNeedEngineUpdate.flags &
                GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
            err = mLocApi->setLPPeProtocolCpSync(
                    gnssConfigRequested.lppeControlPlaneMask);
            if (index < count) {
                errsList[index] = err;
            }
        }
        index++;
    }

    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
        if (gnssConfigNeedEngineUpdate.flags &
                GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
            err = mLocApi->setLPPeProtocolUpSync(
                    gnssConfigRequested.lppeUserPlaneMask);
            if (index < count) {
                errsList[index] = err;
            }
        }
        index++;
    }

    if (gnssConfigRequested.flags &
            GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
        if (gnssConfigNeedEngineUpdate.flags &
                GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
            err = mLocApi->setAGLONASSProtocolSync(
                    gnssConfigRequested.aGlonassPositionProtocolMask);
            if (index < count) {
                errsList[index] = err;
            }
        }
        index++;
    }
    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT) {
        // Check if feature is supported
        if (!ContextBase::isFeatureSupported(
                    LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
            LOC_LOGe("Feature constellation enablement not supported.");
            err = LOCATION_ERROR_NOT_SUPPORTED;
        } else {
            // Send the SV ID Config to Modem
            mBlacklistedSvIds.assign(gnssConfigRequested.blacklistedSvIds.begin(),
                    gnssConfigRequested.blacklistedSvIds.end());
            err = gnssSvIdConfigUpdateSync(gnssConfigRequested.blacklistedSvIds);
            if (LOCATION_ERROR_SUCCESS != err) {
                LOC_LOGe("Failed to send config to modem, err %d", err);
            }
        }
        if (index < count) {
            errsList[index] = err;
        }
        index++;
    }
    if (gnssConfigRequested.flags &
            GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT) {
        if (gnssConfigNeedEngineUpdate.flags &
                GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT) {
            err = mLocApi->setEmergencyExtensionWindowSync(
                    gnssConfigRequested.emergencyExtensionSeconds);
            if (index < count) {
                errsList[index] = err;
            }
        }
        index++;
    }

    if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_MIN_SV_ELEVATION_BIT) {
        GnssConfig gnssConfig = {};
        gnssConfig.flags = GNSS_CONFIG_FLAGS_MIN_SV_ELEVATION_BIT;
        gnssConfig.minSvElevation = gnssConfigRequested.minSvElevation;
        err = mLocApi->setParameterSync(gnssConfig);
        if (index < count) {
            errsList[index] = err;
        }
        index++;
    }

    return errsList;
}

uint32_t*
GnssAdapter::gnssUpdateConfigCommand(const GnssConfig& config)
{
    // count the number of bits set
    GnssConfigFlagsMask flagsCopy = config.flags;
    size_t count = 0;
    while (flagsCopy > 0) {
        if (flagsCopy & 1) {
            count++;
        }
        flagsCopy >>= 1;
    }
    std::string idsString = "[";
    uint32_t* ids = NULL;
    if (count > 0) {
        ids = new uint32_t[count];
        if (ids == nullptr) {
            LOC_LOGE("%s] new allocation failed, fatal error.", __func__);
            return nullptr;
        }
        for (size_t i=0; i < count; ++i) {
            ids[i] = generateSessionId();
            IF_LOC_LOGD {
                idsString += std::to_string(ids[i]) + " ";
            }
        }
    }
    idsString += "]";

    LOC_LOGD("%s]: ids %s flags 0x%X", __func__, idsString.c_str(), config.flags);

    struct MsgGnssUpdateConfig : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        GnssConfig mConfig;
        size_t mCount;
        uint32_t* mIds;
        inline MsgGnssUpdateConfig(GnssAdapter& adapter,
                                   LocApiBase& api,
                                   GnssConfig config,
                                   uint32_t* ids,
                                   size_t count) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mConfig(config),
            mCount(count),
            mIds(nullptr) {
                if (mCount > 0) {
                    mIds = new uint32_t[count];
                    if (mIds) {
                        for (uint32_t index = 0; index < count; index++) {
                            mIds[index] = ids[index];
                        }
                    } else {
                        LOC_LOGe("memory allocation for mIds failed");
                    }
                }
        }

        inline MsgGnssUpdateConfig(const MsgGnssUpdateConfig& obj) :
                MsgGnssUpdateConfig(obj.mAdapter, obj.mApi, obj.mConfig,
                        obj.mIds, obj.mCount) {}

        inline virtual ~MsgGnssUpdateConfig()
        {
            if (nullptr != mIds) delete[] mIds;
        }

        inline virtual void proc() const {
            if (!mAdapter.isEngineCapabilitiesKnown()) {
                mAdapter.mPendingMsgs.push_back(new MsgGnssUpdateConfig(*this));
                return;
            }
            GnssAdapter& adapter = mAdapter;
            size_t countOfConfigs = mCount;
            GnssConfig gnssConfigRequested = mConfig;
            GnssConfig gnssConfigNeedEngineUpdate = mConfig;

            std::vector<uint32_t> sessionIds;
            sessionIds.assign(mIds, mIds + mCount);
            std::vector<LocationError> errs(mCount, LOCATION_ERROR_SUCCESS);
            int index = 0;
            bool needSuspendResume = false;

            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
                GnssConfigGpsLock newGpsLock = gnssConfigRequested.gpsLock;

                newGpsLock |= GNSS_CONFIG_GPS_LOCK_MO;
                ContextBase::mGps_conf.GPS_LOCK = newGpsLock;
                /* If we get here it means that the changes in the framework to request for
                   'P' behavior were made, and therefore we need to "behave" as in 'P'
                However, we need to determine if enableCommand function has already been
                called, since it could get called before this function.*/
                if (0 != mAdapter.getAfwControlId()) {
                    /* enableCommand function has already been called since getAfwControlId
                    returns non zero. Now there are two possible cases:
                    1. This is the first time this function is called
                       (mSupportNfwControl is true). We need to behave as in 'P', but
                       for the first time, meaning MO was enabled, but NI was not, so
                       we need to unlock NI
                    2. This is not the first time this function is called, meaning we
                       are already behaving as in 'P'. No need to update the configuration
                       in this case (return to 'P' code) */
                    if (mAdapter.mSupportNfwControl) {
                        // case 1 above
                        newGpsLock = GNSS_CONFIG_GPS_LOCK_NONE;
                    } else {
                        // case 2 above
                        gnssConfigNeedEngineUpdate.flags &= ~(GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT);
                    }
                }
                gnssConfigRequested.gpsLock = newGpsLock;
                mAdapter.mSupportNfwControl = false;
                index++;
            }
            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
                uint32_t newSuplVersion =
                        mAdapter.convertSuplVersion(gnssConfigRequested.suplVersion);
                ContextBase::mGps_conf.SUPL_VER = newSuplVersion;
                index++;
            }
            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
                if (GNSS_ASSISTANCE_TYPE_SUPL == mConfig.assistanceServer.type) {
                    mAdapter.setSuplHostServer(mConfig.assistanceServer.hostName,
                                                     mConfig.assistanceServer.port,
                                                     LOC_AGPS_SUPL_SERVER);
                } else {
                    LOC_LOGE("%s]: Not a valid gnss assistance type %u",
                            __func__, mConfig.assistanceServer.type);
                    errs.at(index) = LOCATION_ERROR_INVALID_PARAMETER;
                    gnssConfigNeedEngineUpdate.flags &=
                            ~(GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT);
                }
                index++;
            }
            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
                uint32_t newLppProfileMask = gnssConfigRequested.lppProfileMask;
                ContextBase::mGps_conf.LPP_PROFILE = newLppProfileMask;
                index++;
            }
            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
                uint32_t newLppeControlPlaneMask =
                        mAdapter.convertLppeCp(gnssConfigRequested.lppeControlPlaneMask);
                ContextBase::mGps_conf.LPPE_CP_TECHNOLOGY = newLppeControlPlaneMask;
                index++;
            }
            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
                uint32_t newLppeUserPlaneMask =
                        mAdapter.convertLppeUp(gnssConfigRequested.lppeUserPlaneMask);
                ContextBase::mGps_conf.LPPE_UP_TECHNOLOGY = newLppeUserPlaneMask;
                index++;
            }
            if (gnssConfigRequested.flags &
                    GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
                uint32_t newAGloProtMask =
                        mAdapter.convertAGloProt(gnssConfigRequested.aGlonassPositionProtocolMask);
                ContextBase::mGps_conf.A_GLONASS_POS_PROTOCOL_SELECT = newAGloProtMask;
                index++;
            }
            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_EM_PDN_FOR_EM_SUPL_VALID_BIT) {
                uint32_t newEP4ES = mAdapter.convertEP4ES(
                        gnssConfigRequested.emergencyPdnForEmergencySupl);
                if (newEP4ES != ContextBase::mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL) {
                    ContextBase::mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL = newEP4ES;
                }
                index++;
            }
            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT) {
                uint32_t newSuplEs = mAdapter.convertSuplEs(
                        gnssConfigRequested.suplEmergencyServices);
                if (newSuplEs != ContextBase::mGps_conf.SUPL_ES) {
                    ContextBase::mGps_conf.SUPL_ES = newSuplEs;
                }
                index++;
            }
            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_SUPL_MODE_BIT) {
                uint32_t newSuplMode = mAdapter.convertSuplMode(gnssConfigRequested.suplModeMask);
                ContextBase::mGps_conf.SUPL_MODE = newSuplMode;
                mAdapter.broadcastCapabilities(mAdapter.getCapabilities());
                index++;
            }

            if (gnssConfigRequested.flags & GNSS_CONFIG_FLAGS_MIN_SV_ELEVATION_BIT) {
                needSuspendResume = true;
                index++;
            }

            if (needSuspendResume == true) {
                mAdapter.suspendSessions();
            }
            LocApiCollectiveResponse *configCollectiveResponse = new LocApiCollectiveResponse(
                    *adapter.getContext(),
                    [&adapter, sessionIds, countOfConfigs] (std::vector<LocationError> errs) {

                    std::vector<uint32_t> ids(sessionIds);
                    adapter.reportResponse(countOfConfigs, errs.data(), ids.data());
            });

            mApi.sendMsg(new LocApiMsg(
                    [&adapter, gnssConfigRequested, gnssConfigNeedEngineUpdate,
                    countOfConfigs, configCollectiveResponse, errs] () mutable {
                std::vector<LocationError> errsList = adapter.gnssUpdateConfig("",
                        gnssConfigRequested, gnssConfigNeedEngineUpdate, countOfConfigs);

                configCollectiveResponse->returnToSender(errsList);
            }));

            if (needSuspendResume == true) {
                mAdapter.restartSessions();
            }
        }
    };

    if (NULL != ids) {
        sendMsg(new MsgGnssUpdateConfig(*this, *mLocApi, config, ids, count));
    } else {
        LOC_LOGE("%s]: No GNSS config items to update", __func__);
    }

    return ids;
}

void
GnssAdapter::gnssSvIdConfigUpdate(const std::vector<GnssSvIdSource>& blacklistedSvIds)
{
    // Clear the existing config
    memset(&mGnssSvIdConfig, 0, sizeof(GnssSvIdConfig));

    // Convert the sv id lists to masks
    bool convertSuccess = convertToGnssSvIdConfig(blacklistedSvIds, mGnssSvIdConfig);

    // Now send to Modem if conversion successful
    if (convertSuccess) {
        gnssSvIdConfigUpdate();
    } else {
        LOC_LOGe("convertToGnssSvIdConfig failed");
    }
}

void
GnssAdapter::gnssSvIdConfigUpdate()
{
    LOC_LOGd("blacklist bds 0x%" PRIx64 ", glo 0x%" PRIx64
            ", qzss 0x%" PRIx64 ", gal 0x%" PRIx64 ", sbas 0x%" PRIx64 ", navic 0x%" PRIx64,
            mGnssSvIdConfig.bdsBlacklistSvMask, mGnssSvIdConfig.gloBlacklistSvMask,
            mGnssSvIdConfig.qzssBlacklistSvMask, mGnssSvIdConfig.galBlacklistSvMask,
            mGnssSvIdConfig.sbasBlacklistSvMask, mGnssSvIdConfig.navicBlacklistSvMask);
    // Now set required blacklisted SVs
    mLocApi->setBlacklistSv(mGnssSvIdConfig);
}

LocationError
GnssAdapter::gnssSvIdConfigUpdateSync(const std::vector<GnssSvIdSource>& blacklistedSvIds)
{
    // Clear the existing config
    memset(&mGnssSvIdConfig, 0, sizeof(GnssSvIdConfig));

    // Convert the sv id lists to masks
    convertToGnssSvIdConfig(blacklistedSvIds, mGnssSvIdConfig);

    // Now send to Modem
    return gnssSvIdConfigUpdateSync();
}

LocationError
GnssAdapter::gnssSvIdConfigUpdateSync()
{
    LOC_LOGd("blacklist bds 0x%" PRIx64 ", glo 0x%" PRIx64
            ", qzss 0x%" PRIx64 ", gal 0x%" PRIx64 ", sbas 0x%" PRIx64 ", navic 0x%" PRIx64,
            mGnssSvIdConfig.bdsBlacklistSvMask, mGnssSvIdConfig.gloBlacklistSvMask,
            mGnssSvIdConfig.qzssBlacklistSvMask, mGnssSvIdConfig.galBlacklistSvMask,
            mGnssSvIdConfig.sbasBlacklistSvMask, mGnssSvIdConfig.navicBlacklistSvMask);

    // Now set required blacklisted SVs
    return mLocApi->setBlacklistSvSync(mGnssSvIdConfig);
}

void
GnssAdapter::gnssSecondaryBandConfigUpdate(LocApiResponse* locApiResponse)
{
    LOC_LOGd("secondary band config, size %d, enabled constellation 0x%" PRIx64 ","
             "disabled constellation 0x%" PRIx64 "", mGnssSeconaryBandConfig.size,
             mGnssSeconaryBandConfig.enabledSvTypesMask,
             mGnssSeconaryBandConfig.blacklistedSvTypesMask);
    if (mGnssSeconaryBandConfig.size == sizeof(mGnssSeconaryBandConfig)) {
        // Now set required secondary band config
        mLocApi->configConstellationMultiBand(mGnssSeconaryBandConfig, locApiResponse);
    }
}

uint32_t*
GnssAdapter::gnssGetConfigCommand(GnssConfigFlagsMask configMask) {

    // count the number of bits set
    GnssConfigFlagsMask flagsCopy = configMask;
    size_t count = 0;
    while (flagsCopy > 0) {
        if (flagsCopy & 1) {
            count++;
        }
        flagsCopy >>= 1;
    }
    std::string idsString = "[";
    uint32_t* ids = NULL;
    if (count > 0) {
        ids = new uint32_t[count];
        if (nullptr == ids) {
            LOC_LOGe("new allocation failed, fatal error.");
            return nullptr;
        }
        for (size_t i=0; i < count; ++i) {
            ids[i] = generateSessionId();
            IF_LOC_LOGD {
                idsString += std::to_string(ids[i]) + " ";
            }
        }
    }
    idsString += "]";

    LOC_LOGd("ids %s flags 0x%X", idsString.c_str(), configMask);

    struct MsgGnssGetConfig : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        GnssConfigFlagsMask mConfigMask;
        uint32_t* mIds;
        size_t mCount;
        inline MsgGnssGetConfig(GnssAdapter& adapter,
                                LocApiBase& api,
                                GnssConfigFlagsMask configMask,
                                uint32_t* ids,
                                size_t count) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mConfigMask(configMask),
            mCount(count),
            mIds(nullptr) {
                if (mCount > 0) {
                    mIds = new uint32_t[count];
                    if (mIds) {
                        for (uint32_t index = 0; index < count; index++) {
                            mIds[index] = ids[index];
                        }
                    } else {
                        LOC_LOGe("memory allocation for mIds failed");
                    }
                }
        }

        inline MsgGnssGetConfig(const MsgGnssGetConfig& obj) :
                MsgGnssGetConfig(obj.mAdapter, obj.mApi, obj.mConfigMask,
                        obj.mIds, obj.mCount) {}

        inline virtual ~MsgGnssGetConfig()
        {
            if (nullptr != mIds) delete[] mIds;
        }
        inline virtual void proc() const {
            if (!mAdapter.isEngineCapabilitiesKnown()) {
                mAdapter.mPendingMsgs.push_back(new MsgGnssGetConfig(*this));
                return;
            }
            LocationError* errs = new LocationError[mCount];
            LocationError err = LOCATION_ERROR_SUCCESS;
            uint32_t index = 0;

            if (nullptr == errs) {
                LOC_LOGE("%s] new allocation failed, fatal error.", __func__);
                return;
            }

            if (mConfigMask & GNSS_CONFIG_FLAGS_GPS_LOCK_VALID_BIT) {
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_SUPL_VERSION_VALID_BIT) {
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_SET_ASSISTANCE_DATA_VALID_BIT) {
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_LPP_PROFILE_VALID_BIT) {
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_LPPE_CONTROL_PLANE_VALID_BIT) {
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_LPPE_USER_PLANE_VALID_BIT) {
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_AGLONASS_POSITION_PROTOCOL_VALID_BIT) {
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_EM_PDN_FOR_EM_SUPL_VALID_BIT) {
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_SUPL_EM_SERVICES_BIT) {
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_SUPL_MODE_BIT) {
                err = LOCATION_ERROR_NOT_SUPPORTED;
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT) {
                // Check if feature is supported
                if (!ContextBase::isFeatureSupported(
                        LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
                    LOC_LOGe("Feature not supported.");
                    err = LOCATION_ERROR_NOT_SUPPORTED;
                } else {
                    // Send request to Modem to fetch the config
                    mApi.getBlacklistSv();
                    err = LOCATION_ERROR_SUCCESS;
                }
                if (index < mCount) {
                    errs[index++] = err;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_EMERGENCY_EXTENSION_SECONDS_BIT) {
                err = LOCATION_ERROR_NOT_SUPPORTED;
                if (index < mCount) {
                    errs[index++] = LOCATION_ERROR_NOT_SUPPORTED;
                }
            }
            if (mConfigMask & GNSS_CONFIG_FLAGS_ROBUST_LOCATION_BIT) {
                uint32_t sessionId = *(mIds+index);
                LocApiResponse* locApiResponse =
                        new LocApiResponse(*mAdapter.getContext(),
                                           [this, sessionId] (LocationError err) {
                                           mAdapter.reportResponse(err, sessionId);});
                if (!locApiResponse) {
                    LOC_LOGe("memory alloc failed");
                    mAdapter.reportResponse(LOCATION_ERROR_GENERAL_FAILURE, sessionId);
                } else {
                   mApi.getRobustLocationConfig(sessionId, locApiResponse);
                }
            }

            if (mConfigMask & GNSS_CONFIG_FLAGS_MIN_GPS_WEEK_BIT) {
                uint32_t sessionId = *(mIds+index);
                LocApiResponse* locApiResponse =
                        new LocApiResponse(*mAdapter.getContext(),
                                           [this, sessionId] (LocationError err) {
                                           mAdapter.reportResponse(err, sessionId);});
                if (!locApiResponse) {
                    LOC_LOGe("memory alloc failed");
                    mAdapter.reportResponse(LOCATION_ERROR_GENERAL_FAILURE, sessionId);
                } else {
                   mApi.getMinGpsWeek(sessionId, locApiResponse);
                }
            }

            if (mConfigMask & GNSS_CONFIG_FLAGS_MIN_SV_ELEVATION_BIT) {
                uint32_t sessionId = *(mIds+index);
                LocApiResponse* locApiResponse =
                        new LocApiResponse(*mAdapter.getContext(),
                                           [this, sessionId] (LocationError err) {
                                           mAdapter.reportResponse(err, sessionId);});
                if (!locApiResponse) {
                    LOC_LOGe("memory alloc failed");
                    mAdapter.reportResponse(LOCATION_ERROR_GENERAL_FAILURE, sessionId);
                } else {
                    mApi.getParameter(sessionId, GNSS_CONFIG_FLAGS_MIN_SV_ELEVATION_BIT,
                                      locApiResponse);
                }
            }

            mAdapter.reportResponse(index, errs, mIds);
            delete[] errs;

        }
    };

    if (NULL != ids) {
        sendMsg(new MsgGnssGetConfig(*this, *mLocApi, configMask, ids, count));
    } else {
        LOC_LOGe("No GNSS config items to Get");
    }

    return ids;
}

bool
GnssAdapter::convertToGnssSvIdConfig(
        const std::vector<GnssSvIdSource>& blacklistedSvIds, GnssSvIdConfig& config)
{
    bool retVal = false;
    config.size = sizeof(GnssSvIdConfig);

    // Empty vector => Clear any previous blacklisted SVs
    if (0 == blacklistedSvIds.size()) {
        config.gloBlacklistSvMask = 0;
        config.bdsBlacklistSvMask = 0;
        config.qzssBlacklistSvMask = 0;
        config.galBlacklistSvMask = 0;
        config.sbasBlacklistSvMask = 0;
        config.navicBlacklistSvMask = 0;
        retVal = true;
    } else {
        // Parse the vector and convert SV IDs to mask values
        for (GnssSvIdSource source : blacklistedSvIds) {
            uint64_t* svMaskPtr = NULL;
            GnssSvId initialSvId = 0;
            uint16_t svIndexOffset = 0;
            switch(source.constellation) {
            case GNSS_SV_TYPE_GLONASS:
                svMaskPtr = &config.gloBlacklistSvMask;
                initialSvId = GNSS_SV_CONFIG_GLO_INITIAL_SV_ID;
                break;
            case GNSS_SV_TYPE_BEIDOU:
                svMaskPtr = &config.bdsBlacklistSvMask;
                initialSvId = GNSS_SV_CONFIG_BDS_INITIAL_SV_ID;
                break;
            case GNSS_SV_TYPE_QZSS:
                svMaskPtr = &config.qzssBlacklistSvMask;
                initialSvId = GNSS_SV_CONFIG_QZSS_INITIAL_SV_ID;
                break;
            case GNSS_SV_TYPE_GALILEO:
                svMaskPtr = &config.galBlacklistSvMask;
                initialSvId = GNSS_SV_CONFIG_GAL_INITIAL_SV_ID;
                break;
            case GNSS_SV_TYPE_SBAS:
                // SBAS does not support enable/disable whole constellation
                // so do not set up svTypeMask for SBAS
                svMaskPtr = &config.sbasBlacklistSvMask;
                // SBAS currently has two ranges, [120, 158] and [183, 191]
                if (0 == source.svId) {
                    LOC_LOGd("blacklist all SBAS SV");
                } else if (source.svId >= GNSS_SV_CONFIG_SBAS_INITIAL2_SV_ID) {
                    // handle SV id in range [183, 191]
                    initialSvId = GNSS_SV_CONFIG_SBAS_INITIAL2_SV_ID;
                    svIndexOffset = GNSS_SV_CONFIG_SBAS_INITIAL_SV_LENGTH;
                } else if ((source.svId >= GNSS_SV_CONFIG_SBAS_INITIAL_SV_ID) &&
                           (source.svId < (GNSS_SV_CONFIG_SBAS_INITIAL_SV_ID +
                                           GNSS_SV_CONFIG_SBAS_INITIAL_SV_LENGTH))){
                        // handle SV id in range of [120, 158]
                        initialSvId = GNSS_SV_CONFIG_SBAS_INITIAL_SV_ID;
                    } else {
                        LOC_LOGe("invalid SBAS sv id %d", source.svId);
                        svMaskPtr = nullptr;
                    }
                    break;
            case GNSS_SV_TYPE_NAVIC:
                 svMaskPtr = &config.navicBlacklistSvMask;
                 initialSvId = GNSS_SV_CONFIG_NAVIC_INITIAL_SV_ID;
                break;
            default:
                break;
            }

            if (NULL == svMaskPtr) {
                LOC_LOGe("Invalid constellation %d", source.constellation);
            } else {
                // SV ID 0 = All SV IDs
                if (0 == source.svId) {
                    *svMaskPtr = GNSS_SV_CONFIG_ALL_BITS_ENABLED_MASK;
                } else if (source.svId < initialSvId || source.svId >= initialSvId + 64) {
                    LOC_LOGe("Invalid sv id %d for sv type %d",
                            source.svId, source.constellation);
                } else {
                    uint32_t shiftCnt = source.svId + svIndexOffset - initialSvId;
                    *svMaskPtr |= (1ULL << shiftCnt);
                }
            }
        }

        // Return true if any one source is valid
        if (0 != config.gloBlacklistSvMask ||
                0 != config.bdsBlacklistSvMask ||
                0 != config.galBlacklistSvMask ||
                0 != config.qzssBlacklistSvMask ||
                0 != config.sbasBlacklistSvMask ||
                0 != config.navicBlacklistSvMask) {
            retVal = true;
        }
    }

    LOC_LOGd("blacklist bds 0x%" PRIx64 ", glo 0x%" PRIx64
            ", qzss 0x%" PRIx64 ", gal 0x%" PRIx64 ", sbas 0x%" PRIx64 ", navic 0x%" PRIx64,
             config.bdsBlacklistSvMask, config.gloBlacklistSvMask,
             config.qzssBlacklistSvMask, config.galBlacklistSvMask,
            config.sbasBlacklistSvMask, config.navicBlacklistSvMask);

    return retVal;
}

void GnssAdapter::convertFromGnssSvIdConfig(
        const GnssSvIdConfig& svConfig, std::vector<GnssSvIdSource>& blacklistedSvIds)
{
    // Convert blacklisted SV mask values to vectors
    if (svConfig.bdsBlacklistSvMask) {
        convertGnssSvIdMaskToList(
                svConfig.bdsBlacklistSvMask, blacklistedSvIds,
                GNSS_SV_CONFIG_BDS_INITIAL_SV_ID, GNSS_SV_TYPE_BEIDOU);
    }
    if (svConfig.galBlacklistSvMask) {
        convertGnssSvIdMaskToList(
                svConfig.galBlacklistSvMask, blacklistedSvIds,
                GNSS_SV_CONFIG_GAL_INITIAL_SV_ID, GNSS_SV_TYPE_GALILEO);
    }
    if (svConfig.gloBlacklistSvMask) {
        convertGnssSvIdMaskToList(
                svConfig.gloBlacklistSvMask, blacklistedSvIds,
                GNSS_SV_CONFIG_GLO_INITIAL_SV_ID, GNSS_SV_TYPE_GLONASS);
    }
    if (svConfig.qzssBlacklistSvMask) {
        convertGnssSvIdMaskToList(
                svConfig.qzssBlacklistSvMask, blacklistedSvIds,
                GNSS_SV_CONFIG_QZSS_INITIAL_SV_ID, GNSS_SV_TYPE_QZSS);
    }
    if (svConfig.sbasBlacklistSvMask) {
        // SBAS - SV 120 to 158, maps to 0 to 38
        //        SV 183 to 191, maps to 39 to 47
        uint64_t sbasBlacklistSvMask = svConfig.sbasBlacklistSvMask;
        // operate on 120 and 158 first
        sbasBlacklistSvMask <<= (64 - GNSS_SV_CONFIG_SBAS_INITIAL_SV_LENGTH);
        sbasBlacklistSvMask >>= (64 - GNSS_SV_CONFIG_SBAS_INITIAL_SV_LENGTH);
        convertGnssSvIdMaskToList(
                sbasBlacklistSvMask, blacklistedSvIds,
                GNSS_SV_CONFIG_SBAS_INITIAL_SV_ID, GNSS_SV_TYPE_SBAS);
        // operate on the second range
        sbasBlacklistSvMask = svConfig.sbasBlacklistSvMask;
        sbasBlacklistSvMask >>= GNSS_SV_CONFIG_SBAS_INITIAL_SV_LENGTH;
        convertGnssSvIdMaskToList(
                sbasBlacklistSvMask, blacklistedSvIds,
                GNSS_SV_CONFIG_SBAS_INITIAL2_SV_ID, GNSS_SV_TYPE_SBAS);
    }
    if (svConfig.navicBlacklistSvMask) {
        convertGnssSvIdMaskToList(
                svConfig.navicBlacklistSvMask, blacklistedSvIds,
                GNSS_SV_CONFIG_NAVIC_INITIAL_SV_ID, GNSS_SV_TYPE_NAVIC);
    }
}

void GnssAdapter::convertGnssSvIdMaskToList(
        uint64_t svIdMask, std::vector<GnssSvIdSource>& svIds,
        GnssSvId initialSvId, GnssSvType svType)
{
    GnssSvIdSource source = {};
    source.size = sizeof(GnssSvIdSource);
    source.constellation = svType;

    // SV ID 0 => All SV IDs in mask
    if (GNSS_SV_CONFIG_ALL_BITS_ENABLED_MASK == svIdMask) {
        LOC_LOGd("blacklist all SVs in constellation %d", source.constellation);
        source.svId = 0;
        svIds.push_back(source);
        return;
    }

    // Convert each bit in svIdMask to vector entry
    uint32_t bitNumber = 0;
    while (svIdMask > 0) {
        if (svIdMask & 0x1) {
            source.svId = bitNumber + initialSvId;
            // SBAS has two ranges:
            // SBAS - SV 120 to 158, maps to 0 to 38
            //        SV 183 to 191, maps to 39 to 47
            // #define GNSS_SV_CONFIG_SBAS_INITIAL_SV_ID     120
            // #define GNSS_SV_CONFIG_SBAS_INITIAL_SV_LENGTH 39
            // #define GNSS_SV_CONFIG_SBAS_INITIAL2_SV_ID    183
            if (svType == GNSS_SV_TYPE_SBAS) {
                if (bitNumber >= GNSS_SV_CONFIG_SBAS_INITIAL_SV_LENGTH) {
                    source.svId = bitNumber - GNSS_SV_CONFIG_SBAS_INITIAL_SV_LENGTH +
                                  GNSS_SV_CONFIG_SBAS_INITIAL2_SV_ID;
                }
            }
            svIds.push_back(source);
        }
        bitNumber++;
        svIdMask >>= 1;
    }
}

void GnssAdapter::reportGnssSvIdConfigEvent(const GnssSvIdConfig& config)
{
    struct MsgReportGnssSvIdConfig : public LocMsg {
        GnssAdapter& mAdapter;
        const GnssSvIdConfig mConfig;
        inline MsgReportGnssSvIdConfig(GnssAdapter& adapter,
                                 const GnssSvIdConfig& config) :
            LocMsg(),
            mAdapter(adapter),
            mConfig(config) {}
        inline virtual void proc() const {
            mAdapter.reportGnssSvIdConfig(mConfig);
        }
    };

    sendMsg(new MsgReportGnssSvIdConfig(*this, config));
}

void GnssAdapter::reportGnssSvIdConfig(const GnssSvIdConfig& svIdConfig)
{
    GnssConfig config = {};
    config.size = sizeof(GnssConfig);

    // Invoke control clients config callback
    if (nullptr != mControlCallbacks.gnssConfigCb &&
            svIdConfig.size == sizeof(GnssSvIdConfig)) {

        convertFromGnssSvIdConfig(svIdConfig, config.blacklistedSvIds);
        if (config.blacklistedSvIds.size() > 0) {
            config.flags |= GNSS_CONFIG_FLAGS_BLACKLISTED_SV_IDS_BIT;
        }
        LOC_LOGd("blacklist bds 0x%" PRIx64 ", glo 0x%" PRIx64 ", "
                 "qzss 0x%" PRIx64 ", gal 0x%" PRIx64 ", sbas 0x%" PRIx64 ", navic 0x%" PRIx64,
                 svIdConfig.bdsBlacklistSvMask, svIdConfig.gloBlacklistSvMask,
                 svIdConfig.qzssBlacklistSvMask, svIdConfig.galBlacklistSvMask,
                 svIdConfig.sbasBlacklistSvMask,  svIdConfig.navicBlacklistSvMask);
        // use 0 session id to indicate that receiver does not yet care about session id
        mControlCallbacks.gnssConfigCb(0, config);
    } else {
        LOC_LOGe("Failed to report, size %d", (uint32_t)config.size);
    }
}

void
GnssAdapter::gnssUpdateSvTypeConfigCommand(GnssSvTypeConfig config)
{
    struct MsgGnssUpdateSvTypeConfig : public LocMsg {
        GnssAdapter* mAdapter;
        LocApiBase* mApi;
        GnssSvTypeConfig mConfig;
        inline MsgGnssUpdateSvTypeConfig(
                GnssAdapter* adapter,
                LocApiBase* api,
                GnssSvTypeConfig& config) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mConfig(config) {}
        inline virtual void proc() const {
            if (!mAdapter->isEngineCapabilitiesKnown()) {
                mAdapter->mPendingMsgs.push_back(new MsgGnssUpdateSvTypeConfig(*this));
                return;
            }
            // Check if feature is supported
            if (!ContextBase::isFeatureSupported(
                    LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
                LOC_LOGe("Feature not supported.");
            } else {
                // Send update request to modem
                mAdapter->gnssSvTypeConfigUpdate(mConfig);
            }
        }
    };

    sendMsg(new MsgGnssUpdateSvTypeConfig(this, mLocApi, config));
}

void
GnssAdapter::gnssSvTypeConfigUpdate(const GnssSvTypeConfig& config)
{
    // Gather bits removed from enabled mask
    GnssSvTypesMask enabledRemoved = mGnssSvTypeConfig.enabledSvTypesMask &
            (mGnssSvTypeConfig.enabledSvTypesMask ^ config.enabledSvTypesMask);
    // Send reset if any constellation is removed from the enabled list
    bool sendReset = (enabledRemoved != 0);
    // Save new config and update
    gnssSetSvTypeConfig(config);
    gnssSvTypeConfigUpdate(sendReset);
}

void
GnssAdapter::gnssSvTypeConfigUpdate(bool sendReset)
{
    LOC_LOGd("size %" PRIu32" constellations blacklisted 0x%" PRIx64 ", enabled 0x%" PRIx64
             ", sendReset %d",
             mGnssSvTypeConfig.size, mGnssSvTypeConfig.blacklistedSvTypesMask,
             mGnssSvTypeConfig.enabledSvTypesMask, sendReset);

    LOC_LOGd("blacklist bds 0x%" PRIx64 ", glo 0x%" PRIx64
            ", qzss 0x%" PRIx64 ", gal 0x%" PRIx64 ", sbas 0x%" PRIx64 ", Navic 0x%" PRIx64,
            mGnssSvIdConfig.bdsBlacklistSvMask, mGnssSvIdConfig.gloBlacklistSvMask,
            mGnssSvIdConfig.qzssBlacklistSvMask, mGnssSvIdConfig.galBlacklistSvMask,
            mGnssSvIdConfig.sbasBlacklistSvMask, mGnssSvIdConfig.navicBlacklistSvMask);

    LOC_LOGd("blacklist bds 0x%" PRIx64 ", glo 0x%" PRIx64
            ", qzss 0x%" PRIx64 ", gal 0x%" PRIx64 ", sbas 0x%" PRIx64 ", Navic 0x%" PRIx64,
            mGnssSvIdConfig.bdsBlacklistSvMask, mGnssSvIdConfig.gloBlacklistSvMask,
            mGnssSvIdConfig.qzssBlacklistSvMask, mGnssSvIdConfig.galBlacklistSvMask,
            mGnssSvIdConfig.sbasBlacklistSvMask, mGnssSvIdConfig.navicBlacklistSvMask);

    if (mGnssSvTypeConfig.size == sizeof(mGnssSvTypeConfig)) {

        if (sendReset) {
            mLocApi->resetConstellationControl();
        }

        GnssSvIdConfig blacklistConfig = {};
        // Revert to previously blacklisted SVs for each enabled constellation
        blacklistConfig = mGnssSvIdConfig;
        // Blacklist all SVs for each disabled constellation
        if (mGnssSvTypeConfig.blacklistedSvTypesMask) {
            if (mGnssSvTypeConfig.blacklistedSvTypesMask & GNSS_SV_TYPES_MASK_GLO_BIT) {
                blacklistConfig.gloBlacklistSvMask = GNSS_SV_CONFIG_ALL_BITS_ENABLED_MASK;
            }
            if (mGnssSvTypeConfig.blacklistedSvTypesMask & GNSS_SV_TYPES_MASK_BDS_BIT) {
                blacklistConfig.bdsBlacklistSvMask = GNSS_SV_CONFIG_ALL_BITS_ENABLED_MASK;
            }
            if (mGnssSvTypeConfig.blacklistedSvTypesMask & GNSS_SV_TYPES_MASK_QZSS_BIT) {
                blacklistConfig.qzssBlacklistSvMask = GNSS_SV_CONFIG_ALL_BITS_ENABLED_MASK;
            }
            if (mGnssSvTypeConfig.blacklistedSvTypesMask & GNSS_SV_TYPES_MASK_GAL_BIT) {
                blacklistConfig.galBlacklistSvMask = GNSS_SV_CONFIG_ALL_BITS_ENABLED_MASK;
            }
            if (mGnssSvTypeConfig.blacklistedSvTypesMask & GNSS_SV_TYPES_MASK_NAVIC_BIT) {
                blacklistConfig.navicBlacklistSvMask = GNSS_SV_CONFIG_ALL_BITS_ENABLED_MASK;
            }
        }

        // Send blacklist info
        mLocApi->setBlacklistSv(blacklistConfig);

        // Send only enabled constellation config
        if (mGnssSvTypeConfig.enabledSvTypesMask) {
            GnssSvTypeConfig svTypeConfig = {sizeof(GnssSvTypeConfig), 0, 0};
            svTypeConfig.enabledSvTypesMask = mGnssSvTypeConfig.enabledSvTypesMask;
            mLocApi->setConstellationControl(svTypeConfig);
        }
    }
}

void
GnssAdapter::gnssGetSvTypeConfigCommand(GnssSvTypeConfigCallback callback)
{
    struct MsgGnssGetSvTypeConfig : public LocMsg {
        GnssAdapter* mAdapter;
        LocApiBase* mApi;
        GnssSvTypeConfigCallback mCallback;
        inline MsgGnssGetSvTypeConfig(
                GnssAdapter* adapter,
                LocApiBase* api,
                GnssSvTypeConfigCallback callback) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mCallback(callback) {}
        inline virtual void proc() const {
            if (!mAdapter->isEngineCapabilitiesKnown()) {
                mAdapter->mPendingMsgs.push_back(new MsgGnssGetSvTypeConfig(*this));
                return;
            }
            if (!ContextBase::isFeatureSupported(
                    LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
                LOC_LOGe("Feature not supported.");
            } else {
                // Save the callback
                mAdapter->gnssSetSvTypeConfigCallback(mCallback);
                // Send GET request to modem
                mApi->getConstellationControl();
            }
        }
    };

    sendMsg(new MsgGnssGetSvTypeConfig(this, mLocApi, callback));
}

void
GnssAdapter::gnssResetSvTypeConfigCommand()
{
    struct MsgGnssResetSvTypeConfig : public LocMsg {
        GnssAdapter* mAdapter;
        LocApiBase* mApi;
        inline MsgGnssResetSvTypeConfig(
                GnssAdapter* adapter,
                LocApiBase* api) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api) {}
        inline virtual void proc() const {
            if (!mAdapter->isEngineCapabilitiesKnown()) {
                mAdapter->mPendingMsgs.push_back(new MsgGnssResetSvTypeConfig(*this));
                return;
            }
            if (!ContextBase::isFeatureSupported(
                    LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
                LOC_LOGe("Feature not supported.");
            } else {
                // Reset constellation config
                mAdapter->gnssSetSvTypeConfig({sizeof(GnssSvTypeConfig), 0, 0});
                // Re-enforce SV blacklist config
                mAdapter->gnssSvIdConfigUpdate();
                // Send reset request to modem
                mApi->resetConstellationControl();
            }
        }
    };

    sendMsg(new MsgGnssResetSvTypeConfig(this, mLocApi));
}

void GnssAdapter::reportGnssSvTypeConfigEvent(const GnssSvTypeConfig& config)
{
    struct MsgReportGnssSvTypeConfig : public LocMsg {
        GnssAdapter& mAdapter;
        const GnssSvTypeConfig mConfig;
        inline MsgReportGnssSvTypeConfig(GnssAdapter& adapter,
                                 const GnssSvTypeConfig& config) :
            LocMsg(),
            mAdapter(adapter),
            mConfig(config) {}
        inline virtual void proc() const {
            mAdapter.reportGnssSvTypeConfig(mConfig);
        }
    };

    sendMsg(new MsgReportGnssSvTypeConfig(*this, config));
}

void GnssAdapter::reportGnssSvTypeConfig(const GnssSvTypeConfig& config)
{
    // Invoke Get SV Type Callback
    if (NULL != mGnssSvTypeConfigCb &&
            config.size == sizeof(GnssSvTypeConfig)) {
        LOC_LOGd("constellations blacklisted 0x%" PRIx64 ", enabled 0x%" PRIx64,
                 config.blacklistedSvTypesMask, config.enabledSvTypesMask);
        mGnssSvTypeConfigCb(config);
    } else {
        LOC_LOGe("Failed to report, size %d", (uint32_t)config.size);
    }
}

void GnssAdapter::deleteAidingData(const GnssAidingData &data, uint32_t sessionId) {
    struct timespec bootDeleteAidingDataTime;
    int64_t bootDeleteTimeMs;
    if (clock_gettime(CLOCK_BOOTTIME, &bootDeleteAidingDataTime) == 0) {
        bootDeleteTimeMs = bootDeleteAidingDataTime.tv_sec * 1000000;
        int64_t diffTimeBFirSecDelete = bootDeleteTimeMs - mLastDeleteAidingDataTime;
        if (diffTimeBFirSecDelete > DELETE_AIDING_DATA_EXPECTED_TIME_MS) {
            mLocApi->deleteAidingData(data, new LocApiResponse(*getContext(),
                    [this, sessionId] (LocationError err) {
                        reportResponse(err, sessionId);
                    }));
            mLastDeleteAidingDataTime = bootDeleteTimeMs;
       }
   }
}

uint32_t
GnssAdapter::gnssDeleteAidingDataCommand(GnssAidingData& data)
{
    uint32_t sessionId = generateSessionId();
    LOC_LOGD("%s]: id %u", __func__, sessionId);

    struct MsgDeleteAidingData : public LocMsg {
        GnssAdapter& mAdapter;
        uint32_t mSessionId;
        GnssAidingData mData;
        inline MsgDeleteAidingData(GnssAdapter& adapter,
                                   uint32_t sessionId,
                                   GnssAidingData& data) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mData(data) {}
        inline virtual void proc() const {
            if ((mData.posEngineMask & STANDARD_POSITIONING_ENGINE) != 0) {
                mAdapter.deleteAidingData(mData, mSessionId);
                SystemStatus* s = mAdapter.getSystemStatus();
                if ((nullptr != s) && (mData.deleteAll)) {
                    s->setDefaultGnssEngineStates();
                }
            }

            bool retVal = mAdapter.mEngHubProxy->gnssDeleteAidingData(mData);
            // When SPE engine is invoked, responseCb will be invoked
            // from QMI Loc API call.
            // When SPE engine is not invoked, we also need to deliver responseCb
            if ((mData.posEngineMask & STANDARD_POSITIONING_ENGINE) == 0) {
                LocationError err = LOCATION_ERROR_NOT_SUPPORTED;
                if (retVal == true) {
                    err = LOCATION_ERROR_SUCCESS;
                }
                mAdapter.reportResponse(err, mSessionId);
            }
        }
    };

    sendMsg(new MsgDeleteAidingData(*this, sessionId, data));
    return sessionId;
}

void
GnssAdapter::gnssUpdateXtraThrottleCommand(const bool enabled)
{
    LOC_LOGD("%s] enabled:%d", __func__, enabled);

    struct UpdateXtraThrottleMsg : public LocMsg {
        GnssAdapter& mAdapter;
        const bool mEnabled;
        inline UpdateXtraThrottleMsg(GnssAdapter& adapter, const bool enabled) :
            LocMsg(),
            mAdapter(adapter),
            mEnabled(enabled) {}
        inline virtual void proc() const {
                mAdapter.mXtraObserver.updateXtraThrottle(mEnabled);
        }
    };

    sendMsg(new UpdateXtraThrottleMsg(*this, enabled));
}

void
GnssAdapter::injectLocationCommand(double latitude, double longitude, float accuracy)
{
    LOC_LOGD("%s]: latitude %8.4f longitude %8.4f accuracy %8.4f",
             __func__, latitude, longitude, accuracy);

    struct MsgInjectLocation : public LocMsg {
        LocApiBase& mApi;
        ContextBase& mContext;
        BlockCPIInfo& mBlockCPI;
        double mLatitude;
        double mLongitude;
        float mAccuracy;
        bool mOnDemandCpi;
        inline MsgInjectLocation(LocApiBase& api,
                                 ContextBase& context,
                                 BlockCPIInfo& blockCPIInfo,
                                 double latitude,
                                 double longitude,
                                 float accuracy,
                                 bool onDemandCpi) :
            LocMsg(),
            mApi(api),
            mContext(context),
            mBlockCPI(blockCPIInfo),
            mLatitude(latitude),
            mLongitude(longitude),
            mAccuracy(accuracy),
            mOnDemandCpi(onDemandCpi) {}
        inline virtual void proc() const {
            if ((uptimeMillis() <= mBlockCPI.blockedTillTsMs) &&
                (fabs(mLatitude-mBlockCPI.latitude) <= mBlockCPI.latLonDiffThreshold) &&
                (fabs(mLongitude-mBlockCPI.longitude) <= mBlockCPI.latLonDiffThreshold)) {

                LOC_LOGD("%s]: positon injection blocked: lat: %f, lon: %f, accuracy: %f",
                         __func__, mLatitude, mLongitude, mAccuracy);

            } else {
                mApi.injectPosition(mLatitude, mLongitude, mAccuracy, mOnDemandCpi);
            }
        }
    };

    sendMsg(new MsgInjectLocation(*mLocApi, *mContext, mBlockCPIInfo,
                                  latitude, longitude, accuracy, mOdcpiRequestActive));
}

void
GnssAdapter::injectLocationExtCommand(const GnssLocationInfoNotification &locationInfo)
{
    LOC_LOGd("latitude %8.4f longitude %8.4f accuracy %8.4f, tech mask 0x%x",
             locationInfo.location.latitude, locationInfo.location.longitude,
             locationInfo.location.accuracy, locationInfo.location.techMask);

    struct MsgInjectLocationExt : public LocMsg {
        LocApiBase& mApi;
        ContextBase& mContext;
        GnssLocationInfoNotification mLocationInfo;
        inline MsgInjectLocationExt(LocApiBase& api,
                                    ContextBase& context,
                                    GnssLocationInfoNotification locationInfo) :
            LocMsg(),
            mApi(api),
            mContext(context),
            mLocationInfo(locationInfo) {}
        inline virtual void proc() const {
            // false to indicate for none-ODCPI
            mApi.injectPosition(mLocationInfo, false);
        }
    };

    sendMsg(new MsgInjectLocationExt(*mLocApi, *mContext, locationInfo));
}

void
GnssAdapter::injectTimeCommand(int64_t time, int64_t timeReference, int32_t uncertainty)
{
    LOC_LOGD("%s]: time %lld timeReference %lld uncertainty %d",
             __func__, (long long)time, (long long)timeReference, uncertainty);

    struct MsgInjectTime : public LocMsg {
        LocApiBase& mApi;
        ContextBase& mContext;
        int64_t mTime;
        int64_t mTimeReference;
        int32_t mUncertainty;
        inline MsgInjectTime(LocApiBase& api,
                             ContextBase& context,
                             int64_t time,
                             int64_t timeReference,
                             int32_t uncertainty) :
            LocMsg(),
            mApi(api),
            mContext(context),
            mTime(time),
            mTimeReference(timeReference),
            mUncertainty(uncertainty) {}
        inline virtual void proc() const {
            mApi.setTime(mTime, mTimeReference, mUncertainty);
        }
    };

    sendMsg(new MsgInjectTime(*mLocApi, *mContext, time, timeReference, uncertainty));
}

// This command is to called to block the position to be injected to the modem.
// This can happen for network position that comes from modem.
void
GnssAdapter::blockCPICommand(double latitude, double longitude,
                             float accuracy, int blockDurationMsec,
                             double latLonDiffThreshold)
{
    struct MsgBlockCPI : public LocMsg {
        BlockCPIInfo& mDstCPIInfo;
        BlockCPIInfo mSrcCPIInfo;

        inline MsgBlockCPI(BlockCPIInfo& dstCPIInfo,
                           BlockCPIInfo& srcCPIInfo) :
            mDstCPIInfo(dstCPIInfo),
            mSrcCPIInfo(srcCPIInfo) {}
        inline virtual void proc() const {
            // in the same hal thread, save the cpi to be blocked
            // the global variable
            mDstCPIInfo = mSrcCPIInfo;
        }
    };

    // construct the new block CPI info and queue on the same thread
    // for processing
    BlockCPIInfo blockCPIInfo;
    blockCPIInfo.latitude = latitude;
    blockCPIInfo.longitude = longitude;
    blockCPIInfo.accuracy = accuracy;
    blockCPIInfo.blockedTillTsMs = uptimeMillis() + blockDurationMsec;
    blockCPIInfo.latLonDiffThreshold = latLonDiffThreshold;

    LOC_LOGD("%s]: block CPI lat: %f, lon: %f ", __func__, latitude, longitude);
    // send a message to record down the coarse position
    // to be blocked from injection in the master copy (mBlockCPIInfo)
    sendMsg(new MsgBlockCPI(mBlockCPIInfo, blockCPIInfo));
}

void
GnssAdapter::updateSystemPowerState(PowerStateType systemPowerState) {
    if (POWER_STATE_UNKNOWN != systemPowerState) {
        mSystemPowerState = systemPowerState;
        mLocApi->updateSystemPowerState(mSystemPowerState);
    }
}

void
GnssAdapter::updateSystemPowerStateCommand(PowerStateType systemPowerState) {
    LOC_LOGd("power event %d", systemPowerState);

    struct MsgUpdatePowerState : public LocMsg {
        GnssAdapter& mAdapter;
        PowerStateType mSystemPowerState;

        inline MsgUpdatePowerState(GnssAdapter& adapter,
                                   PowerStateType systemPowerState) :
            LocMsg(),
            mAdapter(adapter),
            mSystemPowerState(systemPowerState) {}
        inline virtual void proc() const {
            mAdapter.updateSystemPowerState(mSystemPowerState);
        }
    };

    sendMsg(new MsgUpdatePowerState(*this, systemPowerState));
}

void
GnssAdapter::addClientCommand(LocationAPI* client, const LocationCallbacks& callbacks)
{
    LOC_LOGD("%s]: client %p", __func__, client);

    struct MsgAddClient : public LocMsg {
        GnssAdapter& mAdapter;
        LocationAPI* mClient;
        const LocationCallbacks mCallbacks;
        inline MsgAddClient(GnssAdapter& adapter,
                            LocationAPI* client,
                            const LocationCallbacks& callbacks) :
            LocMsg(),
            mAdapter(adapter),
            mClient(client),
            mCallbacks(callbacks) {}
        inline virtual void proc() const {
            // check whether we need to notify client of cached location system info
            mAdapter.notifyClientOfCachedLocationSystemInfo(mClient, mCallbacks);
            mAdapter.saveClient(mClient, mCallbacks);
        }
    };

    sendMsg(new MsgAddClient(*this, client, callbacks));
}

void
GnssAdapter::stopClientSessions(LocationAPI* client)
{
    LOC_LOGD("%s]: client %p", __func__, client);

    /* Time-based Tracking */
    std::vector<LocationSessionKey> vTimeBasedTrackingClient;
    for (auto it : mTimeBasedTrackingSessions) {
        if (client == it.first.client) {
            vTimeBasedTrackingClient.emplace_back(it.first.client, it.first.id);
        }
    }
    for (auto key : vTimeBasedTrackingClient) {
        stopTimeBasedTrackingMultiplex(key.client, key.id);
        eraseTrackingSession(key.client, key.id);
    }

    /* Distance-based Tracking */
    for (auto it = mDistanceBasedTrackingSessions.begin();
              it != mDistanceBasedTrackingSessions.end(); /* no increment here*/) {
        if (client == it->first.client) {
            mLocApi->stopDistanceBasedTracking(it->first.id, new LocApiResponse(*getContext(),
                          [this, client, id=it->first.id] (LocationError err) {
                    if (LOCATION_ERROR_SUCCESS == err) {
                        eraseTrackingSession(client, id);
                    }
                }
            ));
        }
        ++it; // increment only when not erasing an iterator
    }

}

void
GnssAdapter::updateClientsEventMask()
{
    // need to register for leap second info
    // for proper nmea generation
    LOC_API_ADAPTER_EVENT_MASK_T mask = LOC_API_ADAPTER_BIT_LOC_SYSTEM_INFO |
            LOC_API_ADAPTER_BIT_EVENT_REPORT_INFO;
    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
        if (it->second.trackingCb != nullptr ||
            it->second.gnssLocationInfoCb != nullptr ||
            it->second.engineLocationsInfoCb != nullptr) {
            mask |= LOC_API_ADAPTER_BIT_PARSED_POSITION_REPORT;
        }
        if (it->second.gnssSvCb != nullptr) {
            mask |= LOC_API_ADAPTER_BIT_SATELLITE_REPORT;
        }
        if ((it->second.gnssNmeaCb != nullptr) && (mNmeaMask)) {
            mask |= LOC_API_ADAPTER_BIT_NMEA_1HZ_REPORT;
        }
        if (it->second.gnssMeasurementsCb != nullptr) {
            mask |= LOC_API_ADAPTER_BIT_GNSS_MEASUREMENT;
        }
        if (it->second.gnssDataCb != nullptr) {
            mask |= LOC_API_ADAPTER_BIT_PARSED_POSITION_REPORT;
            mask |= LOC_API_ADAPTER_BIT_NMEA_1HZ_REPORT;
            updateNmeaMask(mNmeaMask | LOC_NMEA_MASK_DEBUG_V02);
        }
    }

    /*
    ** For Automotive use cases we need to enable MEASUREMENT, POLY and EPHEMERIS
    ** when QDR is enabled (e.g.: either enabled via conf file or
    ** engine hub is loaded successfully).
    ** Note: this need to be called from msg queue thread.
    */
    if((1 == ContextBase::mGps_conf.EXTERNAL_DR_ENABLED) ||
       (true == initEngHubProxy())) {
        mask |= LOC_API_ADAPTER_BIT_GNSS_MEASUREMENT;
        mask |= LOC_API_ADAPTER_BIT_GNSS_SV_POLYNOMIAL_REPORT;
        mask |= LOC_API_ADAPTER_BIT_PARSED_UNPROPAGATED_POSITION_REPORT;
        mask |= LOC_API_ADAPTER_BIT_GNSS_SV_EPHEMERIS_REPORT;

        // Nhz measurement bit is set based on callback from loc eng hub
        // for Nhz engines.
        mask |= checkMask(LOC_API_ADAPTER_BIT_GNSS_NHZ_MEASUREMENT);

        LOC_LOGd("Auto usecase, Enable MEAS/POLY/EPHEMERIS - mask 0x%" PRIx64 "",
                mask);
    }

    if (mAgpsManager.isRegistered()) {
        mask |= LOC_API_ADAPTER_BIT_LOCATION_SERVER_REQUEST;
    }
    // Add ODCPI handling
    if (nullptr != mOdcpiRequestCb) {
        mask |= LOC_API_ADAPTER_BIT_REQUEST_WIFI;
    }

    // need to register for leap second info
    // for proper nmea generation
    mask |= LOC_API_ADAPTER_BIT_LOC_SYSTEM_INFO;

    // always register for NI NOTIFY VERIFY to handle internally in HAL
    mask |= LOC_API_ADAPTER_BIT_NI_NOTIFY_VERIFY_REQUEST;

    // Enable the latency report
    if (mask & LOC_API_ADAPTER_BIT_GNSS_MEASUREMENT) {
        if (mLogger.isLogEnabled()) {
            mask |= LOC_API_ADAPTER_BIT_LATENCY_INFORMATION;
        }
    }

    updateEvtMask(mask, LOC_REGISTRATION_MASK_SET);
}

void
GnssAdapter::handleEngineUpEvent()
{
    LOC_LOGD("%s]: ", __func__);

    struct MsgHandleEngineUpEvent : public LocMsg {
        GnssAdapter& mAdapter;
        inline MsgHandleEngineUpEvent(GnssAdapter& adapter) :
            LocMsg(),
            mAdapter(adapter) {}
        virtual void proc() const {
            mAdapter.setEngineCapabilitiesKnown(true);
            mAdapter.broadcastCapabilities(mAdapter.getCapabilities());
            // must be called only after capabilities are known
            mAdapter.setConfig();
            mAdapter.gnssSvIdConfigUpdate();
            mAdapter.gnssSvTypeConfigUpdate();
            mAdapter.updateSystemPowerState(mAdapter.getSystemPowerState());
            mAdapter.gnssSecondaryBandConfigUpdate();
            // start CDFW service
            mAdapter.initCDFWService();
            // restart sessions
            mAdapter.restartSessions(true);
            for (auto msg: mAdapter.mPendingMsgs) {
                mAdapter.sendMsg(msg);
            }
            mAdapter.mPendingMsgs.clear();
        }
    };

    readConfigCommand();
    sendMsg(new MsgHandleEngineUpEvent(*this));
}

void
GnssAdapter::restartSessions(bool modemSSR)
{
    LOC_LOGi(":enter");

    if (modemSSR) {
        // odcpi session is no longer active after restart
        mOdcpiRequestActive = false;
    }

    // SPE will be restarted now, so set this variable to false.
    mSPEAlreadyRunningAtHighestInterval = false;

    if (false == mTimeBasedTrackingSessions.empty()) {
        // inform engine hub that GNSS session is about to start
        mEngHubProxy->gnssSetFixMode(mLocPositionMode);
        mEngHubProxy->gnssStartFix();
        checkUpdateDgnssNtrip(false);
    }

    checkAndRestartSPESession();
}

void GnssAdapter::checkAndRestartSPESession()
{
    LOC_LOGD("%s]: ", __func__);

    // SPE will be restarted now, so set this variable to false.
    mSPEAlreadyRunningAtHighestInterval = false;

    checkAndRestartTimeBasedSession();

    for (auto it = mDistanceBasedTrackingSessions.begin();
        it != mDistanceBasedTrackingSessions.end(); ++it) {
        mLocApi->startDistanceBasedTracking(it->first.id, it->second,
                                            new LocApiResponse(*getContext(),
                                            [] (LocationError /*err*/) {}));
    }
}

// suspend all on-going sessions
void
GnssAdapter::suspendSessions()
{
    LOC_LOGi(":enter");

    if (!mTimeBasedTrackingSessions.empty()) {
        // inform engine hub that GNSS session has stopped
        mEngHubProxy->gnssStopFix();
        mLocApi->stopFix(nullptr);
        if (isDgnssNmeaRequired()) {
            mDgnssState &= ~DGNSS_STATE_NO_NMEA_PENDING;
        }
        stopDgnssNtrip();
        mSPEAlreadyRunningAtHighestInterval = false;
    }
}

void GnssAdapter::checkAndRestartTimeBasedSession()
{
    LOC_LOGD("%s]: ", __func__);

    if (!mTimeBasedTrackingSessions.empty()) {
        // get the LocationOptions that has the smallest interval, which should be the active one
        TrackingOptions smallestIntervalOptions; // size is zero until set for the first time
        TrackingOptions highestPowerTrackingOptions;
        memset(&smallestIntervalOptions, 0, sizeof(smallestIntervalOptions));
        memset(&highestPowerTrackingOptions, 0, sizeof(highestPowerTrackingOptions));
        for (auto it = mTimeBasedTrackingSessions.begin();
                it != mTimeBasedTrackingSessions.end(); ++it) {
            // size of zero means we havent set it yet
            if (0 == smallestIntervalOptions.size ||
                it->second.minInterval < smallestIntervalOptions.minInterval) {
                 smallestIntervalOptions = it->second;
            }
            GnssPowerMode powerMode = it->second.powerMode;
            // Size of zero means we havent set it yet
            if (0 == highestPowerTrackingOptions.size ||
                (GNSS_POWER_MODE_INVALID != powerMode &&
                        powerMode < highestPowerTrackingOptions.powerMode)) {
                 highestPowerTrackingOptions = it->second;
            }
        }

        highestPowerTrackingOptions.setLocationOptions(smallestIntervalOptions);
        // want to run SPE session at a fixed min interval in some automotive scenarios
        if(!checkAndSetSPEToRunforNHz(highestPowerTrackingOptions)) {
            mLocApi->startTimeBasedTracking(highestPowerTrackingOptions, nullptr);
        }
    }
}

LocationCapabilitiesMask
GnssAdapter::getCapabilities()
{
    LocationCapabilitiesMask mask = 0;
    uint32_t carrierCapabilities = ContextBase::getCarrierCapabilities();
    // time based tracking always supported
    mask |= LOCATION_CAPABILITIES_TIME_BASED_TRACKING_BIT;
    // geofence always supported
    mask |= LOCATION_CAPABILITIES_GEOFENCE_BIT;
    if (carrierCapabilities & LOC_GPS_CAPABILITY_MSB) {
        mask |= LOCATION_CAPABILITIES_GNSS_MSB_BIT;
    }
    if (LOC_GPS_CAPABILITY_MSA & carrierCapabilities) {
        mask |= LOCATION_CAPABILITIES_GNSS_MSA_BIT;
    }
    if (ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_LOCATION_BATCHING)) {
        mask |= LOCATION_CAPABILITIES_TIME_BASED_BATCHING_BIT |
                LOCATION_CAPABILITIES_DISTANCE_BASED_BATCHING_BIT;
    }
    if (ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_TRACKING)) {
        mask |= LOCATION_CAPABILITIES_DISTANCE_BASED_TRACKING_BIT;
    }
    if (ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_OUTDOOR_TRIP_BATCHING)) {
        mask |= LOCATION_CAPABILITIES_OUTDOOR_TRIP_BATCHING_BIT;
    }
    if (ContextBase::gnssConstellationConfig()) {
        mask |= LOCATION_CAPABILITIES_GNSS_MEASUREMENTS_BIT;
    }
    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_DEBUG_NMEA_V02)) {
        mask |= LOCATION_CAPABILITIES_DEBUG_NMEA_BIT;
    }
    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_CONSTELLATION_ENABLEMENT_V02)) {
        mask |= LOCATION_CAPABILITIES_CONSTELLATION_ENABLEMENT_BIT;
    }
    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_AGPM_V02)) {
        mask |= LOCATION_CAPABILITIES_AGPM_BIT;
    }
    //Get QWES feature status mask
    mask |= ContextBase::getQwesFeatureStatus();
    return mask;
}

void
GnssAdapter::notifyClientOfCachedLocationSystemInfo(
        LocationAPI* client, const LocationCallbacks& callbacks) {

    if (mLocSystemInfo.systemInfoMask) {
        // client need to be notified if client has not yet previously registered
        // for the info but now register for it.
        bool notifyClientOfSystemInfo = false;
        // check whether we need to notify client of cached location system info
        //
        // client need to be notified if client has not yet previously registered
        // for the info but now register for it.
        if (callbacks.locationSystemInfoCb) {
            notifyClientOfSystemInfo = true;
            auto it = mClientData.find(client);
            if (it != mClientData.end()) {
                LocationCallbacks oldCallbacks = it->second;
                if (oldCallbacks.locationSystemInfoCb) {
                    notifyClientOfSystemInfo = false;
                }
            }
        }

        if (notifyClientOfSystemInfo) {
            callbacks.locationSystemInfoCb(mLocSystemInfo);
        }
    }
}

bool
GnssAdapter::isTimeBasedTrackingSession(LocationAPI* client, uint32_t sessionId)
{
    LocationSessionKey key(client, sessionId);
    return (mTimeBasedTrackingSessions.find(key) != mTimeBasedTrackingSessions.end());
}

bool
GnssAdapter::isDistanceBasedTrackingSession(LocationAPI* client, uint32_t sessionId)
{
    LocationSessionKey key(client, sessionId);
    return (mDistanceBasedTrackingSessions.find(key) != mDistanceBasedTrackingSessions.end());
}

bool
GnssAdapter::hasCallbacksToStartTracking(LocationAPI* client)
{
    bool allowed = false;
    auto it = mClientData.find(client);
    if (it != mClientData.end()) {
        if (it->second.trackingCb || it->second.gnssLocationInfoCb ||
                it->second.engineLocationsInfoCb || it->second.gnssMeasurementsCb ||
                it->second.gnssDataCb || it->second.gnssSvCb || it->second.gnssNmeaCb) {
            allowed = true;
        } else {
            LOC_LOGi("missing right callback to start tracking")
        }
    } else {
        LOC_LOGi("client %p not found", client)
    }
    return allowed;
}

bool
GnssAdapter::isTrackingSession(LocationAPI* client, uint32_t sessionId)
{
    LocationSessionKey key(client, sessionId);
    return (mTimeBasedTrackingSessions.find(key) != mTimeBasedTrackingSessions.end());
}

void
GnssAdapter::reportPowerStateIfChanged()
{
    bool newPowerOn = !mTimeBasedTrackingSessions.empty() ||
                      !mDistanceBasedTrackingSessions.empty();
    if (newPowerOn != mPowerOn) {
        mPowerOn = newPowerOn;
        if (mPowerStateCb != nullptr) {
            mPowerStateCb(mPowerOn);
        }
    }
}

void
GnssAdapter::getPowerStateChangesCommand(std::function<void(bool)> powerStateCb)
{
    LOC_LOGD("%s]: ", __func__);

    struct MsgReportLocation : public LocMsg {
        GnssAdapter& mAdapter;
        std::function<void(bool)> mPowerStateCb;
        inline MsgReportLocation(GnssAdapter& adapter,
                                 std::function<void(bool)> powerStateCb) :
            LocMsg(),
            mAdapter(adapter),
            mPowerStateCb(powerStateCb) {}
        inline virtual void proc() const {
            mAdapter.savePowerStateCallback(mPowerStateCb);
            mPowerStateCb(mAdapter.getPowerState());
        }
    };

    sendMsg(new MsgReportLocation(*this, powerStateCb));
}

void
GnssAdapter::saveTrackingSession(LocationAPI* client, uint32_t sessionId,
                                const TrackingOptions& options)
{
    LocationSessionKey key(client, sessionId);
    if ((options.minDistance > 0) &&
            ContextBase::isMessageSupported(LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_TRACKING)) {
        mDistanceBasedTrackingSessions[key] = options;
    } else {
        mTimeBasedTrackingSessions[key] = options;
    }
    reportPowerStateIfChanged();
}

void
GnssAdapter::eraseTrackingSession(LocationAPI* client, uint32_t sessionId)
{
    LocationSessionKey key(client, sessionId);
    auto it = mTimeBasedTrackingSessions.find(key);
    if (it != mTimeBasedTrackingSessions.end()) {
        mTimeBasedTrackingSessions.erase(it);
    } else {
        auto itr = mDistanceBasedTrackingSessions.find(key);
        if (itr != mDistanceBasedTrackingSessions.end()) {
            mDistanceBasedTrackingSessions.erase(itr);
        }
    }
    reportPowerStateIfChanged();
}

bool GnssAdapter::setLocPositionMode(const LocPosMode& mode) {
    if (!mLocPositionMode.equals(mode)) {
        mLocPositionMode = mode;
        return true;
    } else {
        return false;
    }
}

void
GnssAdapter::reportResponse(LocationAPI* client, LocationError err, uint32_t sessionId)
{
    LOC_LOGD("%s]: client %p id %u err %u", __func__, client, sessionId, err);

    auto it = mClientData.find(client);
    if (it != mClientData.end() && it->second.responseCb != nullptr) {
        it->second.responseCb(err, sessionId);
    } else {
        LOC_LOGW("%s]: client %p id %u not found in data", __func__, client, sessionId);
    }
}

void
GnssAdapter::reportResponse(LocationError err, uint32_t sessionId)
{
    LOC_LOGD("%s]: id %u err %u", __func__, sessionId, err);

    if (mControlCallbacks.size > 0 && mControlCallbacks.responseCb != nullptr) {
        mControlCallbacks.responseCb(err, sessionId);
    } else {
        LOC_LOGW("%s]: control client response callback not found", __func__);
    }
}

void
GnssAdapter::reportResponse(size_t count, LocationError* errs, uint32_t* ids)
{
    IF_LOC_LOGD {
        std::string idsString = "[";
        std::string errsString = "[";
        if (NULL != ids && NULL != errs) {
            for (size_t i=0; i < count; ++i) {
                idsString += std::to_string(ids[i]) + " ";
                errsString += std::to_string(errs[i]) + " ";
            }
        }
        idsString += "]";
        errsString += "]";

        LOC_LOGD("%s]: ids %s errs %s",
                 __func__, idsString.c_str(), errsString.c_str());
    }

    if (mControlCallbacks.size > 0 && mControlCallbacks.collectiveResponseCb != nullptr) {
        mControlCallbacks.collectiveResponseCb(count, errs, ids);
    } else {
        LOC_LOGW("%s]: control client callback not found", __func__);
    }
}

uint32_t
GnssAdapter::startTrackingCommand(LocationAPI* client, TrackingOptions& options)
{
    uint32_t sessionId = generateSessionId();
    LOC_LOGD("%s]: client %p id %u minInterval %u minDistance %u mode %u powermode %u tbm %u",
             __func__, client, sessionId, options.minInterval, options.minDistance, options.mode,
             options.powerMode, options.tbm);

    struct MsgStartTracking : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        LocationAPI* mClient;
        uint32_t mSessionId;
        mutable TrackingOptions mOptions;
        inline MsgStartTracking(GnssAdapter& adapter,
                               LocApiBase& api,
                               LocationAPI* client,
                               uint32_t sessionId,
                               TrackingOptions options) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mClient(client),
            mSessionId(sessionId),
            mOptions(options) {}
        inline virtual void proc() const {
            // distance based tracking will need to know engine capabilities before it can start
            if (!mAdapter.isEngineCapabilitiesKnown() && mOptions.minDistance > 0) {
                mAdapter.mPendingMsgs.push_back(new MsgStartTracking(*this));
                return;
            }
            LocationError err = LOCATION_ERROR_SUCCESS;
            if (!mAdapter.hasCallbacksToStartTracking(mClient)) {
                err = LOCATION_ERROR_CALLBACK_MISSING;
            } else if (0 == mOptions.size) {
                err = LOCATION_ERROR_INVALID_PARAMETER;
            } else {
                if (mOptions.minInterval < MIN_TRACKING_INTERVAL) {
                    mOptions.minInterval = MIN_TRACKING_INTERVAL;
                }
                if (mOptions.minDistance > 0 &&
                        ContextBase::isMessageSupported(
                        LOC_API_ADAPTER_MESSAGE_DISTANCE_BASE_TRACKING)) {
                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
                    mApi.startDistanceBasedTracking(mSessionId, mOptions,
                            new LocApiResponse(*mAdapter.getContext(),
                            [&mAdapter = mAdapter, mSessionId = mSessionId, mClient = mClient]
                            (LocationError err) {
                        if (LOCATION_ERROR_SUCCESS != err) {
                            mAdapter.eraseTrackingSession(mClient, mSessionId);
                        }
                        mAdapter.reportResponse(mClient, err, mSessionId);
                    }));
                } else {
                    if (GNSS_POWER_MODE_M4 == mOptions.powerMode &&
                            mOptions.tbm > TRACKING_TBM_THRESHOLD_MILLIS) {
                        LOC_LOGd("TBM (%d) > %d Falling back to M2 power mode",
                                mOptions.tbm, TRACKING_TBM_THRESHOLD_MILLIS);
                        mOptions.powerMode = GNSS_POWER_MODE_M2;
                    }
                    // Api doesn't support multiple clients for time based tracking, so mutiplex
                    bool reportToClientWithNoWait =
                            mAdapter.startTimeBasedTrackingMultiplex(mClient, mSessionId, mOptions);
                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);

                    if (reportToClientWithNoWait) {
                        mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
                    }
                }
            }
        }
    };

    sendMsg(new MsgStartTracking(*this, *mLocApi, client, sessionId, options));
    return sessionId;

}

bool
GnssAdapter::startTimeBasedTrackingMultiplex(LocationAPI* client, uint32_t sessionId,
                                             const TrackingOptions& options)
{
    bool reportToClientWithNoWait = true;

    if (mTimeBasedTrackingSessions.empty()) {
        /*Reset previous NMEA reported time stamp */
        mPrevNmeaRptTimeNsec = 0;
        startTimeBasedTracking(client, sessionId, options);
        // need to wait for QMI callback
        reportToClientWithNoWait = false;
    } else {
        // find the smallest interval and powerMode
        TrackingOptions multiplexedOptions = {}; // size is 0 until set for the first time
        GnssPowerMode multiplexedPowerMode = GNSS_POWER_MODE_INVALID;
        memset(&multiplexedOptions, 0, sizeof(multiplexedOptions));
        for (auto it = mTimeBasedTrackingSessions.begin(); it != mTimeBasedTrackingSessions.end(); ++it) {
            // if not set or there is a new smallest interval, then set the new interval
            if (0 == multiplexedOptions.size ||
                it->second.minInterval < multiplexedOptions.minInterval) {
                multiplexedOptions = it->second;
            }
            // if session is not the one we are updating and either powerMode
            // is not set or there is a new smallest powerMode, then set the new powerMode
            if (GNSS_POWER_MODE_INVALID == multiplexedPowerMode ||
                it->second.powerMode < multiplexedPowerMode) {
                multiplexedPowerMode = it->second.powerMode;
            }
        }
        bool updateOptions = false;
        // if session we are starting has smaller interval then next smallest
        if (options.minInterval < multiplexedOptions.minInterval) {
            multiplexedOptions.minInterval = options.minInterval;
            updateOptions = true;
        }

        // if session we are starting has smaller powerMode then next smallest
        if (options.powerMode < multiplexedPowerMode) {
            multiplexedOptions.powerMode = options.powerMode;
            updateOptions = true;
        }
        if (updateOptions) {
            // restart time based tracking with the newly updated options

            startTimeBasedTracking(client, sessionId, multiplexedOptions);
            // need to wait for QMI callback
            reportToClientWithNoWait = false;
        }
        // else part: no QMI call is made, need to report back to client right away
    }

    return reportToClientWithNoWait;
}

void
GnssAdapter::startTimeBasedTracking(LocationAPI* client, uint32_t sessionId,
        const TrackingOptions& trackingOptions)
{
    LOC_LOGd("minInterval %u minDistance %u mode %u powermode %u tbm %u",
            trackingOptions.minInterval, trackingOptions.minDistance,
            trackingOptions.mode, trackingOptions.powerMode, trackingOptions.tbm);
    LocPosMode locPosMode = {};
    convertOptions(locPosMode, trackingOptions);
    // save position mode parameters
    setLocPositionMode(locPosMode);
    // inform engine hub that GNSS session is about to start
    mEngHubProxy->gnssSetFixMode(mLocPositionMode);
    mEngHubProxy->gnssStartFix();

    // want to run SPE session at a fixed min interval in some automotive scenarios
    // use a local copy of TrackingOptions as the TBF may get modified in the
    // checkAndSetSPEToRunforNHz function
    TrackingOptions tempOptions(trackingOptions);
    if (!checkAndSetSPEToRunforNHz(tempOptions)) {
        mLocApi->startTimeBasedTracking(tempOptions, new LocApiResponse(*getContext(),
                          [this, client, sessionId] (LocationError err) {
                if (LOCATION_ERROR_SUCCESS != err) {
                    eraseTrackingSession(client, sessionId);
                } else {
                    checkUpdateDgnssNtrip(false);
                }

                reportResponse(client, err, sessionId);
            }
        ));
    } else {
        reportResponse(client, LOCATION_ERROR_SUCCESS, sessionId);
    }

}

void
GnssAdapter::updateTracking(LocationAPI* client, uint32_t sessionId,
        const TrackingOptions& updatedOptions, const TrackingOptions& oldOptions)
{
    LocPosMode locPosMode = {};
    convertOptions(locPosMode, updatedOptions);
    // save position mode parameters
    setLocPositionMode(locPosMode);

    // inform engine hub that GNSS session is about to start
    mEngHubProxy->gnssSetFixMode(mLocPositionMode);
    mEngHubProxy->gnssStartFix();

    // want to run SPE session at a fixed min interval in some automotive scenarios
    // use a local copy of TrackingOptions as the TBF may get modified in the
    // checkAndSetSPEToRunforNHz function
    TrackingOptions tempOptions(updatedOptions);
    if(!checkAndSetSPEToRunforNHz(tempOptions)) {
        mLocApi->startTimeBasedTracking(tempOptions, new LocApiResponse(*getContext(),
                          [this, client, sessionId, oldOptions] (LocationError err) {
                if (LOCATION_ERROR_SUCCESS != err) {
                    // restore the old LocationOptions
                    saveTrackingSession(client, sessionId, oldOptions);
                }
                reportResponse(client, err, sessionId);
            }
        ));
    } else {
        reportResponse(client, LOCATION_ERROR_SUCCESS, sessionId);
    }
}

void
GnssAdapter::updateTrackingOptionsCommand(LocationAPI* client, uint32_t id,
                                          TrackingOptions& options)
{
    LOC_LOGD("%s]: client %p id %u minInterval %u mode %u",
             __func__, client, id, options.minInterval, options.mode);

    struct MsgUpdateTracking : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        LocationAPI* mClient;
        uint32_t mSessionId;
        mutable TrackingOptions mOptions;
        inline MsgUpdateTracking(GnssAdapter& adapter,
                                LocApiBase& api,
                                LocationAPI* client,
                                uint32_t sessionId,
                                TrackingOptions options) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mClient(client),
            mSessionId(sessionId),
            mOptions(options) {}
        inline virtual void proc() const {
            // distance based tracking will need to know engine capabilities before it can start
            if (!mAdapter.isEngineCapabilitiesKnown() && mOptions.minDistance > 0) {
                mAdapter.mPendingMsgs.push_back(new MsgUpdateTracking(*this));
                return;
            }
            LocationError err = LOCATION_ERROR_SUCCESS;
            bool isTimeBased = mAdapter.isTimeBasedTrackingSession(mClient, mSessionId);
            bool isDistanceBased = mAdapter.isDistanceBasedTrackingSession(mClient, mSessionId);
            if (!isTimeBased && !isDistanceBased) {
                err = LOCATION_ERROR_ID_UNKNOWN;
            } else if (0 == mOptions.size) {
                err = LOCATION_ERROR_INVALID_PARAMETER;
            }
            if (LOCATION_ERROR_SUCCESS != err) {
                mAdapter.reportResponse(mClient, err, mSessionId);
            } else {
                if (GNSS_POWER_MODE_M4 == mOptions.powerMode &&
                        mOptions.tbm > TRACKING_TBM_THRESHOLD_MILLIS) {
                    LOC_LOGd("TBM (%d) > %d Falling back to M2 power mode",
                            mOptions.tbm, TRACKING_TBM_THRESHOLD_MILLIS);
                    mOptions.powerMode = GNSS_POWER_MODE_M2;
                }
                if (mOptions.minInterval < MIN_TRACKING_INTERVAL) {
                    mOptions.minInterval = MIN_TRACKING_INTERVAL;
                }
                // Now update session as required
                if (isTimeBased && mOptions.minDistance > 0) {
                    // switch from time based to distance based
                    // Api doesn't support multiple clients for time based tracking, so mutiplex
                    bool reportToClientWithNoWait =
                        mAdapter.stopTimeBasedTrackingMultiplex(mClient, mSessionId);
                    // erases the time based Session
                    mAdapter.eraseTrackingSession(mClient, mSessionId);
                    if (reportToClientWithNoWait) {
                        mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
                    }
                    // saves as distance based Session
                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
                    mApi.startDistanceBasedTracking(mSessionId, mOptions,
                            new LocApiResponse(*mAdapter.getContext(),
                                        [] (LocationError /*err*/) {}));
                } else if (isDistanceBased && mOptions.minDistance == 0) {
                    // switch from distance based to time based
                    mAdapter.eraseTrackingSession(mClient, mSessionId);
                    mApi.stopDistanceBasedTracking(mSessionId, new LocApiResponse(
                            *mAdapter.getContext(),
                            [&mAdapter = mAdapter, mSessionId = mSessionId, mOptions = mOptions,
                            mClient = mClient] (LocationError /*err*/) {
                        // Api doesn't support multiple clients for time based tracking,
                        // so mutiplex
                        bool reportToClientWithNoWait =
                                mAdapter.startTimeBasedTrackingMultiplex(mClient, mSessionId,
                                                                         mOptions);
                        mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);

                        if (reportToClientWithNoWait) {
                            mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
                        }
                    }));
                } else if (isTimeBased) {
                    // update time based tracking
                    // Api doesn't support multiple clients for time based tracking, so mutiplex
                    bool reportToClientWithNoWait =
                            mAdapter.updateTrackingMultiplex(mClient, mSessionId, mOptions);
                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);

                    if (reportToClientWithNoWait) {
                        mAdapter.reportResponse(mClient, err, mSessionId);
                    }
                } else if (isDistanceBased) {
                    // restart distance based tracking
                    mApi.stopDistanceBasedTracking(mSessionId, new LocApiResponse(
                            *mAdapter.getContext(),
                            [&mAdapter = mAdapter, mSessionId = mSessionId, mOptions = mOptions,
                            mClient = mClient, &mApi = mApi] (LocationError err) {
                        if (LOCATION_ERROR_SUCCESS == err) {
                            mApi.startDistanceBasedTracking(mSessionId, mOptions,
                                    new LocApiResponse(*mAdapter.getContext(),
                                    [&mAdapter, mClient, mSessionId, mOptions]
                                    (LocationError err) {
                                if (LOCATION_ERROR_SUCCESS == err) {
                                    mAdapter.saveTrackingSession(mClient, mSessionId, mOptions);
                                }
                                mAdapter.reportResponse(mClient, err, mSessionId);
                            }));
                        }
                    }));
                }
            }
        }
    };

    sendMsg(new MsgUpdateTracking(*this, *mLocApi, client, id, options));
}

bool
GnssAdapter::updateTrackingMultiplex(LocationAPI* client, uint32_t id,
                                     const TrackingOptions& trackingOptions)
{
    bool reportToClientWithNoWait = true;

    LocationSessionKey key(client, id);
    // get the session we are updating
    auto it = mTimeBasedTrackingSessions.find(key);

    // cache the clients existing LocationOptions
    TrackingOptions oldOptions = it->second;

    // if session we are updating exists and the minInterval or powerMode has changed
    if (it != mTimeBasedTrackingSessions.end() &&
       (it->second.minInterval != trackingOptions.minInterval ||
        it->second.powerMode != trackingOptions.powerMode)) {
        // find the smallest interval and powerMode, other than the session we are updating
        TrackingOptions multiplexedOptions = {}; // size is 0 until set for the first time
        GnssPowerMode multiplexedPowerMode = GNSS_POWER_MODE_INVALID;
        memset(&multiplexedOptions, 0, sizeof(multiplexedOptions));
        for (auto it2 = mTimeBasedTrackingSessions.begin();
             it2 != mTimeBasedTrackingSessions.end(); ++it2) {
            // if session is not the one we are updating and either interval
            // is not set or there is a new smallest interval, then set the new interval
            if (it2->first != key && (0 == multiplexedOptions.size ||
                it2->second.minInterval < multiplexedOptions.minInterval)) {
                 multiplexedOptions = it2->second;
            }
            // if session is not the one we are updating and either powerMode
            // is not set or there is a new smallest powerMode, then set the new powerMode
            if (it2->first != key && (GNSS_POWER_MODE_INVALID == multiplexedPowerMode ||
                it2->second.powerMode < multiplexedPowerMode)) {
                multiplexedPowerMode = it2->second.powerMode;
            }
            // else part: no QMI call is made, need to report back to client right away
        }
        bool updateOptions = false;
        // if session we are updating has smaller interval then next smallest
        if (trackingOptions.minInterval < multiplexedOptions.minInterval) {
            multiplexedOptions.minInterval = trackingOptions.minInterval;
            updateOptions = true;
        }
        // if session we are updating has smaller powerMode then next smallest
        if (trackingOptions.powerMode < multiplexedPowerMode) {
            multiplexedOptions.powerMode = trackingOptions.powerMode;
            updateOptions = true;
        }
        // if only one session exists, then tracking should be updated with it
        if (1 == mTimeBasedTrackingSessions.size()) {
            multiplexedOptions = trackingOptions;
            updateOptions = true;
        }
        if (updateOptions) {
            // restart time based tracking with the newly updated options
            updateTracking(client, id, multiplexedOptions, oldOptions);
            // need to wait for QMI callback
            reportToClientWithNoWait = false;
        }
    }

    return reportToClientWithNoWait;
}

void
GnssAdapter::stopTrackingCommand(LocationAPI* client, uint32_t id)
{
    LOC_LOGD("%s]: client %p id %u", __func__, client, id);

    struct MsgStopTracking : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        LocationAPI* mClient;
        uint32_t mSessionId;
        inline MsgStopTracking(GnssAdapter& adapter,
                               LocApiBase& api,
                               LocationAPI* client,
                               uint32_t sessionId) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mClient(client),
            mSessionId(sessionId) {}
        inline virtual void proc() const {
            bool isTimeBased = mAdapter.isTimeBasedTrackingSession(mClient, mSessionId);
            bool isDistanceBased = mAdapter.isDistanceBasedTrackingSession(mClient, mSessionId);
            if (isTimeBased || isDistanceBased) {
                if (isTimeBased) {
                    // Api doesn't support multiple clients for time based tracking, so mutiplex
                    bool reportToClientWithNoWait =
                        mAdapter.stopTimeBasedTrackingMultiplex(mClient, mSessionId);
                    mAdapter.eraseTrackingSession(mClient, mSessionId);

                    if (reportToClientWithNoWait) {
                        mAdapter.reportResponse(mClient, LOCATION_ERROR_SUCCESS, mSessionId);
                    }
                } else if (isDistanceBased) {
                    mApi.stopDistanceBasedTracking(mSessionId, new LocApiResponse(
                            *mAdapter.getContext(),
                            [&mAdapter = mAdapter, mSessionId = mSessionId, mClient = mClient]
                            (LocationError err) {
                        if (LOCATION_ERROR_SUCCESS == err) {
                            mAdapter.eraseTrackingSession(mClient, mSessionId);
                        }
                        mAdapter.reportResponse(mClient, err, mSessionId);
                    }));
                }
            } else {
                mAdapter.reportResponse(mClient, LOCATION_ERROR_ID_UNKNOWN, mSessionId);
            }

        }
    };

    sendMsg(new MsgStopTracking(*this, *mLocApi, client, id));
}

bool
GnssAdapter::stopTimeBasedTrackingMultiplex(LocationAPI* client, uint32_t id)
{
    bool reportToClientWithNoWait = true;

    if (1 == mTimeBasedTrackingSessions.size()) {
        stopTracking(client, id);
        // need to wait for QMI callback
        reportToClientWithNoWait = false;
    } else {
        LocationSessionKey key(client, id);

        // get the session we are stopping
        auto it = mTimeBasedTrackingSessions.find(key);
        if (it != mTimeBasedTrackingSessions.end()) {
            // find the smallest interval and powerMode, other than the session we are stopping
            TrackingOptions multiplexedOptions = {}; // size is 0 until set for the first time
            GnssPowerMode multiplexedPowerMode = GNSS_POWER_MODE_INVALID;
            memset(&multiplexedOptions, 0, sizeof(multiplexedOptions));
            for (auto it2 = mTimeBasedTrackingSessions.begin();
                 it2 != mTimeBasedTrackingSessions.end(); ++it2) {
                // if session is not the one we are stopping and either interval
                // is not set or there is a new smallest interval, then set the new interval
                if (it2->first != key && (0 == multiplexedOptions.size ||
                    it2->second.minInterval < multiplexedOptions.minInterval)) {
                     multiplexedOptions = it2->second;
                }
                // if session is not the one we are stopping and either powerMode
                // is not set or there is a new smallest powerMode, then set the new powerMode
                if (it2->first != key && (GNSS_POWER_MODE_INVALID == multiplexedPowerMode ||
                    it2->second.powerMode < multiplexedPowerMode)) {
                    multiplexedPowerMode = it2->second.powerMode;
                }
            }
            // if session we are stopping has smaller interval then next smallest or
            // if session we are stopping has smaller powerMode then next smallest
            if (it->second.minInterval < multiplexedOptions.minInterval ||
                it->second.powerMode < multiplexedPowerMode) {
                multiplexedOptions.powerMode = multiplexedPowerMode;
                // restart time based tracking with the newly updated options
                startTimeBasedTracking(client, id, multiplexedOptions);
                // need to wait for QMI callback
                reportToClientWithNoWait = false;
            }
            // else part: no QMI call is made, need to report back to client right away
        }
    }
    return reportToClientWithNoWait;
}

void
GnssAdapter::stopTracking(LocationAPI* client, uint32_t id)
{
    // inform engine hub that GNSS session has stopped
    mEngHubProxy->gnssStopFix();

    mLocApi->stopFix(new LocApiResponse(*getContext(),
                     [this, client, id] (LocationError err) {
        reportResponse(client, err, id);
    }));

    if (isDgnssNmeaRequired()) {
        mDgnssState &= ~DGNSS_STATE_NO_NMEA_PENDING;
    }
    stopDgnssNtrip();

    mSPEAlreadyRunningAtHighestInterval = false;
}

bool
GnssAdapter::hasNiNotifyCallback(LocationAPI* client)
{
    auto it = mClientData.find(client);
    return (it != mClientData.end() && it->second.gnssNiCb);
}

void
GnssAdapter::gnssNiResponseCommand(LocationAPI* client,
                                   uint32_t id,
                                   GnssNiResponse response)
{
    LOC_LOGD("%s]: client %p id %u response %u", __func__, client, id, response);

    struct MsgGnssNiResponse : public LocMsg {
        GnssAdapter& mAdapter;
        LocationAPI* mClient;
        uint32_t mSessionId;
        GnssNiResponse mResponse;
        inline MsgGnssNiResponse(GnssAdapter& adapter,
                                 LocationAPI* client,
                                 uint32_t sessionId,
                                 GnssNiResponse response) :
            LocMsg(),
            mAdapter(adapter),
            mClient(client),
            mSessionId(sessionId),
            mResponse(response) {}
        inline virtual void proc() const {
            NiData& niData = mAdapter.getNiData();
            LocationError err = LOCATION_ERROR_SUCCESS;
            if (!mAdapter.hasNiNotifyCallback(mClient)) {
                err = LOCATION_ERROR_ID_UNKNOWN;
            } else {
                NiSession* pSession = NULL;
                if (mSessionId == niData.sessionEs.reqID &&
                    NULL != niData.sessionEs.rawRequest) {
                    pSession = &niData.sessionEs;
                    // ignore any SUPL NI non-Es session if a SUPL NI ES is accepted
                    if (mResponse == GNSS_NI_RESPONSE_ACCEPT &&
                        NULL != niData.session.rawRequest) {
                            pthread_mutex_lock(&niData.session.tLock);
                            niData.session.resp = GNSS_NI_RESPONSE_IGNORE;
                            niData.session.respRecvd = true;
                            pthread_cond_signal(&niData.session.tCond);
                            pthread_mutex_unlock(&niData.session.tLock);
                    }
                } else if (mSessionId == niData.session.reqID &&
                    NULL != niData.session.rawRequest) {
                    pSession = &niData.session;
                }

                if (pSession) {
                    LOC_LOGI("%s]: gnssNiResponseCommand: send user mResponse %u for id %u",
                             __func__, mResponse, mSessionId);
                    pthread_mutex_lock(&pSession->tLock);
                    pSession->resp = mResponse;
                    pSession->respRecvd = true;
                    pthread_cond_signal(&pSession->tCond);
                    pthread_mutex_unlock(&pSession->tLock);
                } else {
                    err = LOCATION_ERROR_ID_UNKNOWN;
                    LOC_LOGE("%s]: gnssNiResponseCommand: id %u not an active session",
                             __func__, mSessionId);
                }
            }
            mAdapter.reportResponse(mClient, err, mSessionId);
        }
    };

    sendMsg(new MsgGnssNiResponse(*this, client, id, response));

}

void
GnssAdapter::gnssNiResponseCommand(GnssNiResponse response, void* rawRequest)
{
    LOC_LOGD("%s]: response %u", __func__, response);

    struct MsgGnssNiResponse : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        const GnssNiResponse mResponse;
        const void* mPayload;
        inline MsgGnssNiResponse(GnssAdapter& adapter,
                                 LocApiBase& api,
                                 const GnssNiResponse response,
                                 const void* rawRequest) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mResponse(response),
            mPayload(rawRequest) {}
        inline virtual ~MsgGnssNiResponse() {
        }
        inline virtual void proc() const {
            mApi.informNiResponse(mResponse, mPayload);
        }
    };

    sendMsg(new MsgGnssNiResponse(*this, *mLocApi, response, rawRequest));

}

uint32_t
GnssAdapter::enableCommand(LocationTechnologyType techType)
{
    uint32_t sessionId = generateSessionId();
    LOC_LOGD("%s]: id %u techType %u", __func__, sessionId, techType);

    struct MsgEnableGnss : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        ContextBase& mContext;
        uint32_t mSessionId;
        LocationTechnologyType mTechType;
        inline MsgEnableGnss(GnssAdapter& adapter,
                             LocApiBase& api,
                             ContextBase& context,
                             uint32_t sessionId,
                             LocationTechnologyType techType) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mContext(context),
            mSessionId(sessionId),
            mTechType(techType) {}
        inline virtual void proc() const {
            LocationError err = LOCATION_ERROR_SUCCESS;
            uint32_t afwControlId = mAdapter.getAfwControlId();
            if (mTechType != LOCATION_TECHNOLOGY_TYPE_GNSS) {
                err = LOCATION_ERROR_INVALID_PARAMETER;
            } else if (afwControlId > 0) {
                err = LOCATION_ERROR_ALREADY_STARTED;
            } else {
                mContext.modemPowerVote(true);
                mAdapter.setAfwControlId(mSessionId);

                GnssConfigGpsLock gpsLock = GNSS_CONFIG_GPS_LOCK_NONE;
                if (mAdapter.mSupportNfwControl) {
                    ContextBase::mGps_conf.GPS_LOCK &= GNSS_CONFIG_GPS_LOCK_NI;
                    gpsLock = ContextBase::mGps_conf.GPS_LOCK;
                }
                mApi.sendMsg(new LocApiMsg([&mApi = mApi, gpsLock]() {
                    mApi.setGpsLockSync(gpsLock);
                }));
                mAdapter.mXtraObserver.updateLockStatus(gpsLock);
            }
            mAdapter.reportResponse(err, mSessionId);
        }
    };

    if (mContext != NULL) {
        sendMsg(new MsgEnableGnss(*this, *mLocApi, *mContext, sessionId, techType));
    } else {
        LOC_LOGE("%s]: Context is NULL", __func__);
    }

    return sessionId;
}

void
GnssAdapter::disableCommand(uint32_t id)
{
    LOC_LOGD("%s]: id %u", __func__, id);

    struct MsgDisableGnss : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        ContextBase& mContext;
        uint32_t mSessionId;
        inline MsgDisableGnss(GnssAdapter& adapter,
                             LocApiBase& api,
                             ContextBase& context,
                             uint32_t sessionId) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mContext(context),
            mSessionId(sessionId) {}
        inline virtual void proc() const {
            LocationError err = LOCATION_ERROR_SUCCESS;
            uint32_t afwControlId = mAdapter.getAfwControlId();
            if (afwControlId != mSessionId) {
                err = LOCATION_ERROR_ID_UNKNOWN;
            } else {
                mContext.modemPowerVote(false);
                mAdapter.setAfwControlId(0);

                if (mAdapter.mSupportNfwControl) {
                    /* We need to disable MO (AFW) */
                    ContextBase::mGps_conf.GPS_LOCK |= GNSS_CONFIG_GPS_LOCK_MO;
                }
                GnssConfigGpsLock gpsLock = ContextBase::mGps_conf.GPS_LOCK;
                mApi.sendMsg(new LocApiMsg([&mApi = mApi, gpsLock]() {
                    mApi.setGpsLockSync(gpsLock);
                }));
                mAdapter.mXtraObserver.updateLockStatus(gpsLock);
            }
            mAdapter.reportResponse(err, mSessionId);
        }
    };

    if (mContext != NULL) {
        sendMsg(new MsgDisableGnss(*this, *mLocApi, *mContext, id));
    }

}

// This function computes the VRP based latitude, longitude and alittude, and
// north, east and up velocity and save the result into EHubTechReport.
void
GnssAdapter::computeVRPBasedLla(const UlpLocation& loc, GpsLocationExtended& locExt,
                                const LeverArmConfigInfo& leverArmConfigInfo) {

    float leverArm[3];
    float rollPitchYaw[3];
    double lla[3];

    uint16_t locFlags = loc.gpsLocation.flags;
    uint64_t locExtFlags = locExt.flags;

    // check for SPE fix
    if (!((locExtFlags & GPS_LOCATION_EXTENDED_HAS_OUTPUT_ENG_TYPE) &&
          (locExt.locOutputEngType == LOC_OUTPUT_ENGINE_SPE))){
        LOC_LOGv("not SPE fix, return");
        return;
    }

    // we can only do translation if we have VRP based lever ARM info
    LeverArmTypeMask leverArmFlags = leverArmConfigInfo.leverArmValidMask;
    if (!(leverArmFlags & LEVER_ARM_TYPE_GNSS_TO_VRP_BIT)) {
        LOC_LOGd("no VRP based lever ARM info");
        return;
    }

    leverArm[0] = leverArmConfigInfo.gnssToVRP.forwardOffsetMeters;
    leverArm[1] = leverArmConfigInfo.gnssToVRP.sidewaysOffsetMeters;
    leverArm[2] = leverArmConfigInfo.gnssToVRP.upOffsetMeters;

    if ((locFlags & LOC_GPS_LOCATION_HAS_LAT_LONG) &&
        (locFlags & LOC_GPS_LOCATION_HAS_ALTITUDE) &&
        (locFlags & LOCATION_HAS_BEARING_BIT)) {

        lla[0] = loc.gpsLocation.latitude * DEG2RAD;
        lla[1] = loc.gpsLocation.longitude * DEG2RAD;
        lla[2] = loc.gpsLocation.altitude;

        rollPitchYaw[0] = 0.0f;
        rollPitchYaw[1] = 0.0f;
        rollPitchYaw[2] = loc.gpsLocation.bearing * DEG2RAD;

        loc_convert_lla_gnss_to_vrp(lla, rollPitchYaw, leverArm);

        // assign the converted value into position report and
        // set up valid mask
        locExt.llaVRPBased.latitude  = lla[0] * RAD2DEG;
        locExt.llaVRPBased.longitude = lla[1] * RAD2DEG;
        locExt.llaVRPBased.altitude  = lla[2];
        locExt.flags |= GPS_LOCATION_EXTENDED_HAS_LLA_VRP_BASED;
    } else {
        LOC_LOGd("SPE fix missing latitude/longitude/alitutde");
        return;
    }
}

void
GnssAdapter::reportPositionEvent(const UlpLocation& ulpLocation,
                                 const GpsLocationExtended& locationExtended,
                                 enum loc_sess_status status,
                                 LocPosTechMask techMask,
                                 GnssDataNotification* pDataNotify,
                                 int msInWeek)
{
    // this position is from QMI LOC API, then send report to engine hub
    // also, send out SPE fix promptly to the clients that have registered
    // with SPE report
    LOC_LOGd("reportPositionEvent, eng type: %d, unpro %d, sess status %d msInWeek %d",
             locationExtended.locOutputEngType,
             ulpLocation.unpropagatedPosition, status, msInWeek);

    struct MsgReportSPEPosition : public LocMsg {
        GnssAdapter& mAdapter;
        mutable UlpLocation mUlpLocation;
        mutable GpsLocationExtended mLocationExtended;
        enum loc_sess_status mStatus;
        LocPosTechMask mTechMask;
        mutable GnssDataNotification mDataNotify;
        int mMsInWeek;

        inline MsgReportSPEPosition(GnssAdapter& adapter,
                                    const UlpLocation& ulpLocation,
                                    const GpsLocationExtended& locationExtended,
                                    enum loc_sess_status status,
                                    LocPosTechMask techMask,
                                    GnssDataNotification dataNotify,
                                    int msInWeek) :
            LocMsg(),
            mAdapter(adapter),
            mUlpLocation(ulpLocation),
            mLocationExtended(locationExtended),
            mStatus(status),
            mTechMask(techMask),
            mDataNotify(dataNotify),
            mMsInWeek(msInWeek) {}
        inline virtual void proc() const {
            if (mAdapter.mTimeBasedTrackingSessions.empty() &&
                mAdapter.mDistanceBasedTrackingSessions.empty()) {
                LOC_LOGd("reportPositionEvent, no session on-going, throw away the SPE reports");
                return;
            }

            if (false == mUlpLocation.unpropagatedPosition && mDataNotify.size != 0) {
                if (mMsInWeek >= 0) {
                    mAdapter.getDataInformation((GnssDataNotification&)mDataNotify,
                                                mMsInWeek);
                }
                mAdapter.reportData(mDataNotify);
            }

            if (true == mAdapter.initEngHubProxy()){
                // send the SPE fix to engine hub
                mAdapter.mEngHubProxy->gnssReportPosition(mUlpLocation, mLocationExtended, mStatus);
                // report out all SPE fix if it is not propagated, even for failed fix
                if (false == mUlpLocation.unpropagatedPosition) {
                    EngineLocationInfo engLocationInfo = {};
                    engLocationInfo.location = mUlpLocation;
                    engLocationInfo.locationExtended = mLocationExtended;
                    engLocationInfo.sessionStatus = mStatus;

                    // obtain the VRP based latitude/longitude/altitude for SPE fix
                    computeVRPBasedLla(engLocationInfo.location,
                                       engLocationInfo.locationExtended,
                                       mAdapter.mLocConfigInfo.leverArmConfigInfo);
                    mAdapter.reportEnginePositions(1, &engLocationInfo);
                }
                return;
            }

            // unpropagated report: is only for engine hub to consume and no need
            // to send out to the clients
            if (true == mUlpLocation.unpropagatedPosition) {
                return;
            }

            // extract bug report info - this returns true if consumed by systemstatus
            SystemStatus* s = mAdapter.getSystemStatus();
            if ((nullptr != s) &&
                    ((LOC_SESS_SUCCESS == mStatus) || (LOC_SESS_INTERMEDIATE == mStatus))){
                s->eventPosition(mUlpLocation, mLocationExtended);
            }

            mAdapter.reportPosition(mUlpLocation, mLocationExtended, mStatus, mTechMask);
        }
    };

    if (mContext != NULL) {
        GnssDataNotification dataNotifyCopy = {};
        if (pDataNotify) {
            dataNotifyCopy = *pDataNotify;
            dataNotifyCopy.size = sizeof(dataNotifyCopy);
        }
        sendMsg(new MsgReportSPEPosition(*this, ulpLocation, locationExtended,
                                          status, techMask, dataNotifyCopy, msInWeek));
    }
}

void
GnssAdapter::reportEnginePositionsEvent(unsigned int count,
                                        EngineLocationInfo* locationArr)
{
    struct MsgReportEnginePositions : public LocMsg {
        GnssAdapter& mAdapter;
        unsigned int mCount;
        EngineLocationInfo mEngLocInfo[LOC_OUTPUT_ENGINE_COUNT];
        inline MsgReportEnginePositions(GnssAdapter& adapter,
                                        unsigned int count,
                                        EngineLocationInfo* locationArr) :
            LocMsg(),
            mAdapter(adapter),
            mCount(count) {
            if (mCount > LOC_OUTPUT_ENGINE_COUNT) {
                mCount = LOC_OUTPUT_ENGINE_COUNT;
            }
            if (mCount > 0) {
                memcpy(mEngLocInfo, locationArr, sizeof(EngineLocationInfo)*mCount);
            }
        }
        inline virtual void proc() const {
            mAdapter.reportEnginePositions(mCount, mEngLocInfo);
        }
    };

    sendMsg(new MsgReportEnginePositions(*this, count, locationArr));
}

bool
GnssAdapter::needReportForGnssClient(const UlpLocation& ulpLocation,
                                     enum loc_sess_status status,
                                     LocPosTechMask techMask) {
    bool reported = false;

    // if engine hub is enabled, aka, any of the engine services is enabled,
    // then always output position reported by engine hub to requesting client
    if (true == initEngHubProxy()) {
        reported = true;
    } else {
        reported = LocApiBase::needReport(ulpLocation, status, techMask);
    }
    return reported;
}

bool
GnssAdapter::needReportForFlpClient(enum loc_sess_status status,
                                    LocPosTechMask techMask) {
    if (((LOC_SESS_INTERMEDIATE == status) && !(techMask & LOC_POS_TECH_MASK_SENSORS) &&
        (!getAllowFlpNetworkFixes())) ||
        (LOC_SESS_FAILURE == status)) {
        return false;
    } else {
        return true;
    }
}

bool
GnssAdapter::isFlpClient(LocationCallbacks& locationCallbacks)
{
    return (locationCallbacks.gnssLocationInfoCb == nullptr &&
            locationCallbacks.gnssSvCb == nullptr &&
            locationCallbacks.gnssNmeaCb == nullptr &&
            locationCallbacks.gnssDataCb == nullptr &&
            locationCallbacks.gnssMeasurementsCb == nullptr);
}

bool GnssAdapter::needToGenerateNmeaReport(const uint32_t &gpsTimeOfWeekMs,
        const struct timespec32_t &apTimeStamp)
{
    bool retVal = false;
    uint64_t currentTimeNsec = 0;

    if (NMEA_PROVIDER_AP == ContextBase::mGps_conf.NMEA_PROVIDER && !mTimeBasedTrackingSessions.empty()) {
        currentTimeNsec = (apTimeStamp.tv_sec * BILLION_NSEC + apTimeStamp.tv_nsec);
        if ((GNSS_NMEA_REPORT_RATE_NHZ == ContextBase::sNmeaReportRate) ||
                (GPS_DEFAULT_FIX_INTERVAL_MS <= mLocPositionMode.min_interval)) {
            retVal = true;
        } else { /*tbf is less than 1000 milli-seconds and NMEA reporting rate is set to 1Hz */
            /* Always send NMEA string for first position report
             * Send when gpsTimeOfWeekMs is closely aligned with integer boundary
             */
            if ((0 == mPrevNmeaRptTimeNsec) ||
                (0 != gpsTimeOfWeekMs) && (NMEA_MIN_THRESHOLD_MSEC >= (gpsTimeOfWeekMs % 1000))) {
                retVal = true;
            } else {
                uint64_t timeDiffMsec = ((currentTimeNsec - mPrevNmeaRptTimeNsec) / 1000000);
                // Send when the delta time becomes >= 1 sec
                if (NMEA_MAX_THRESHOLD_MSEC <= timeDiffMsec) {
                    retVal = true;
                }
            }
        }
        if (true == retVal) {
            mPrevNmeaRptTimeNsec = currentTimeNsec;
        }
    }
    return retVal;
}

void
GnssAdapter::logLatencyInfo()
{
    if (0 == mGnssLatencyInfoQueue.size()) {
        LOC_LOGv("mGnssLatencyInfoQueue.size is 0");
        return;
    }
    mGnssLatencyInfoQueue.front().hlosQtimer5 = getQTimerTickCount();
    if (0 == mGnssLatencyInfoQueue.front().hlosQtimer3) {
        /* if SPE from engine hub is not reported then hlosQtimer3 = 0, set it
        equal to hlosQtimer2 to make sense */
        LOC_LOGv("hlosQtimer3 is 0, setting it to hlosQtimer2");
        mGnssLatencyInfoQueue.front().hlosQtimer3 = mGnssLatencyInfoQueue.front().hlosQtimer2;
    }
    if (0 == mGnssLatencyInfoQueue.front().hlosQtimer4) {
        /* if PPE from engine hub is not reported then hlosQtimer4 = 0, set it
        equal to hlosQtimer3 to make sense */
        LOC_LOGv("hlosQtimer4 is 0, setting it to hlosQtimer3");
        mGnssLatencyInfoQueue.front().hlosQtimer4 = mGnssLatencyInfoQueue.front().hlosQtimer3;
    }
    if (mGnssLatencyInfoQueue.front().hlosQtimer4 < mGnssLatencyInfoQueue.front().hlosQtimer3) {
        /* hlosQtimer3 is timestamped when SPE from engine hub is reported,
        and hlosQtimer4 is timestamped when PPE from engine hub is reported.
        The order is random though, hence making sure the timestamps are sorted */
        LOC_LOGv("hlosQtimer4 is < hlosQtimer3, swapping them");
        std::swap(mGnssLatencyInfoQueue.front().hlosQtimer3,
                  mGnssLatencyInfoQueue.front().hlosQtimer4);
    }
    LOC_LOGv("meQtimer1=%" PRIi64 " "
             "meQtimer2=%" PRIi64 " "
             "meQtimer3=%" PRIi64 " "
             "peQtimer1=%" PRIi64 " "
             "peQtimer2=%" PRIi64 " "
             "peQtimer3=%" PRIi64 " "
             "smQtimer1=%" PRIi64 " "
             "smQtimer2=%" PRIi64 " "
             "smQtimer3=%" PRIi64 " "
             "locMwQtimer=%" PRIi64 " "
             "hlosQtimer1=%" PRIi64 " "
             "hlosQtimer2=%" PRIi64 " "
             "hlosQtimer3=%" PRIi64 " "
             "hlosQtimer4=%" PRIi64 " "
             "hlosQtimer5=%" PRIi64 " ",
             mGnssLatencyInfoQueue.front().meQtimer1, mGnssLatencyInfoQueue.front().meQtimer2,
             mGnssLatencyInfoQueue.front().meQtimer3, mGnssLatencyInfoQueue.front().peQtimer1,
             mGnssLatencyInfoQueue.front().peQtimer2, mGnssLatencyInfoQueue.front().peQtimer3,
             mGnssLatencyInfoQueue.front().smQtimer1, mGnssLatencyInfoQueue.front().smQtimer2,
             mGnssLatencyInfoQueue.front().smQtimer3, mGnssLatencyInfoQueue.front().locMwQtimer,
             mGnssLatencyInfoQueue.front().hlosQtimer1, mGnssLatencyInfoQueue.front().hlosQtimer2,
             mGnssLatencyInfoQueue.front().hlosQtimer3, mGnssLatencyInfoQueue.front().hlosQtimer4,
             mGnssLatencyInfoQueue.front().hlosQtimer5);
    mLogger.log(mGnssLatencyInfoQueue.front());
    mGnssLatencyInfoQueue.pop();
    LOC_LOGv("mGnssLatencyInfoQueue.size after pop=%zu", mGnssLatencyInfoQueue.size());
}

// only fused report (when engine hub is enabled) or
// SPE report (when engine hub is disabled) will reach this function
void
GnssAdapter::reportPosition(const UlpLocation& ulpLocation,
                            const GpsLocationExtended& locationExtended,
                            enum loc_sess_status status,
                            LocPosTechMask techMask)
{
    bool reportToGnssClient = needReportForGnssClient(ulpLocation, status, techMask);
    bool reportToFlpClient = needReportForFlpClient(status, techMask);

    if (reportToGnssClient || reportToFlpClient) {
        GnssLocationInfoNotification locationInfo = {};
        convertLocationInfo(locationInfo, locationExtended, status);
        convertLocation(locationInfo.location, ulpLocation, locationExtended);
        logLatencyInfo();
        for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
            if ((reportToFlpClient && isFlpClient(it->second)) ||
                    (reportToGnssClient && !isFlpClient(it->second))) {
                if (nullptr != it->second.gnssLocationInfoCb) {
                    it->second.gnssLocationInfoCb(locationInfo);
                } else if ((nullptr != it->second.engineLocationsInfoCb) &&
                           (false == initEngHubProxy())) {
                    // if engine hub is disabled, this is SPE fix from modem
                    // we need to mark one copy marked as fused and one copy marked as PPE
                    // and dispatch it to the engineLocationsInfoCb
                    GnssLocationInfoNotification engLocationsInfo[2];
                    engLocationsInfo[0] = locationInfo;
                    engLocationsInfo[0].locOutputEngType = LOC_OUTPUT_ENGINE_FUSED;
                    engLocationsInfo[0].flags |= GNSS_LOCATION_INFO_OUTPUT_ENG_TYPE_BIT;
                    engLocationsInfo[1] = locationInfo;
                    it->second.engineLocationsInfoCb(2, engLocationsInfo);
                } else if (nullptr != it->second.trackingCb) {
                    it->second.trackingCb(locationInfo.location);
                }
            }
        }

        mGnssSvIdUsedInPosAvail = false;
        mGnssMbSvIdUsedInPosAvail = false;
        if (reportToGnssClient) {
            if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_GNSS_SV_USED_DATA) {
                mGnssSvIdUsedInPosAvail = true;
                mGnssSvIdUsedInPosition = locationExtended.gnss_sv_used_ids;
                if (locationExtended.flags & GPS_LOCATION_EXTENDED_HAS_MULTIBAND) {
                    mGnssMbSvIdUsedInPosAvail = true;
                    mGnssMbSvIdUsedInPosition = locationExtended.gnss_mb_sv_used_ids;
                }
            }

            // if PACE is enabled
            if ((true == mLocConfigInfo.paceConfigInfo.isValid) &&
                (true == mLocConfigInfo.paceConfigInfo.enable)) {
                // If fix has sensor contribution, and it is fused fix with DRE engine
                // contributing to the fix, inject to modem
                if ((LOC_POS_TECH_MASK_SENSORS & techMask) &&
                        (locationInfo.flags & GNSS_LOCATION_INFO_OUTPUT_ENG_TYPE_BIT) &&
                        (locationInfo.locOutputEngType == LOC_OUTPUT_ENGINE_FUSED) &&
                        (locationInfo.flags & GNSS_LOCATION_INFO_OUTPUT_ENG_MASK_BIT) &&
                        (locationInfo.locOutputEngMask & DEAD_RECKONING_ENGINE)) {
                    mLocApi->injectPosition(locationInfo, false);
                }
            }
        }
    }

    if (needToGenerateNmeaReport(locationExtended.gpsTime.gpsTimeOfWeekMs,
            locationExtended.timeStamp.apTimeStamp)) {
        /*Only BlankNMEA sentence needs to be processed and sent, if both lat, long is 0 &
          horReliability is not set. */
        bool blank_fix = ((0 == ulpLocation.gpsLocation.latitude) &&
                          (0 == ulpLocation.gpsLocation.longitude) &&
                          (LOC_RELIABILITY_NOT_SET == locationExtended.horizontal_reliability));
        uint8_t generate_nmea = (reportToGnssClient && status != LOC_SESS_FAILURE && !blank_fix);
        bool custom_nmea_gga = (1 == ContextBase::mGps_conf.CUSTOM_NMEA_GGA_FIX_QUALITY_ENABLED);
        bool isTagBlockGroupingEnabled =
                (1 == ContextBase::mGps_conf.NMEA_TAG_BLOCK_GROUPING_ENABLED);
        std::vector<std::string> nmeaArraystr;
        int indexOfGGA = -1;
        loc_nmea_generate_pos(ulpLocation, locationExtended, mLocSystemInfo, generate_nmea,
                custom_nmea_gga, nmeaArraystr, indexOfGGA, isTagBlockGroupingEnabled);
        stringstream ss;
        for (auto itor = nmeaArraystr.begin(); itor != nmeaArraystr.end(); ++itor) {
            ss << *itor;
        }
        string s = ss.str();
        reportNmea(s.c_str(), s.length());

        /* DgnssNtrip */
        if (-1 != indexOfGGA && isDgnssNmeaRequired()) {
            mDgnssState |= DGNSS_STATE_NO_NMEA_PENDING;
            mStartDgnssNtripParams.nmea = std::move(nmeaArraystr[indexOfGGA]);
            bool isLocationValid = (0 != ulpLocation.gpsLocation.latitude) ||
                    (0 != ulpLocation.gpsLocation.longitude);
            checkUpdateDgnssNtrip(isLocationValid);
        }
    }
}

void
GnssAdapter::reportLatencyInfoEvent(const GnssLatencyInfo& gnssLatencyInfo)
{
    struct MsgReportLatencyInfo : public LocMsg {
        GnssAdapter& mAdapter;
        GnssLatencyInfo mGnssLatencyInfo;
        inline MsgReportLatencyInfo(GnssAdapter& adapter,
            const GnssLatencyInfo& gnssLatencyInfo) :
            mGnssLatencyInfo(gnssLatencyInfo),
            mAdapter(adapter) {}
        inline virtual void proc() const {
            mAdapter.mGnssLatencyInfoQueue.push(mGnssLatencyInfo);
            LOC_LOGv("mGnssLatencyInfoQueue.size after push=%zu",
                      mAdapter.mGnssLatencyInfoQueue.size());
        }
    };
    sendMsg(new MsgReportLatencyInfo(*this, gnssLatencyInfo));
}

void
GnssAdapter::reportEnginePositions(unsigned int count,
                                   const EngineLocationInfo* locationArr)
{
    bool needReportEnginePositions = false;
    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
        if (nullptr != it->second.engineLocationsInfoCb) {
            needReportEnginePositions = true;
            break;
        }
    }

    GnssLocationInfoNotification locationInfo[LOC_OUTPUT_ENGINE_COUNT] = {};
    for (unsigned int i = 0; i < count; i++) {
        const EngineLocationInfo* engLocation = (locationArr+i);
        // if it is fused/default location, call reportPosition maintain legacy behavior
        if ((GPS_LOCATION_EXTENDED_HAS_OUTPUT_ENG_TYPE & engLocation->locationExtended.flags) &&
            (LOC_OUTPUT_ENGINE_FUSED == engLocation->locationExtended.locOutputEngType)) {
            reportPosition(engLocation->location,
                           engLocation->locationExtended,
                           engLocation->sessionStatus,
                           engLocation->location.tech_mask);
        }

        if (needReportEnginePositions) {
            convertLocationInfo(locationInfo[i], engLocation->locationExtended,
                                engLocation->sessionStatus);
            convertLocation(locationInfo[i].location,
                            engLocation->location,
                            engLocation->locationExtended);
        }
    }

    const EngineLocationInfo* engLocation = locationArr;
    LOC_LOGv("engLocation->locationExtended.locOutputEngType=%d",
             engLocation->locationExtended.locOutputEngType);

    if (0 != mGnssLatencyInfoQueue.size()) {
        if ((GPS_LOCATION_EXTENDED_HAS_OUTPUT_ENG_TYPE & engLocation->locationExtended.flags) &&
            (LOC_OUTPUT_ENGINE_SPE == engLocation->locationExtended.locOutputEngType)) {
            mGnssLatencyInfoQueue.front().hlosQtimer3 = getQTimerTickCount();
            LOC_LOGv("SPE hlosQtimer3=%" PRIi64 " ", mGnssLatencyInfoQueue.front().hlosQtimer3);
        }
        if ((GPS_LOCATION_EXTENDED_HAS_OUTPUT_ENG_TYPE & engLocation->locationExtended.flags) &&
            (LOC_OUTPUT_ENGINE_PPE == engLocation->locationExtended.locOutputEngType)) {
            mGnssLatencyInfoQueue.front().hlosQtimer4 = getQTimerTickCount();
            LOC_LOGv("PPE hlosQtimer4=%" PRIi64 " ", mGnssLatencyInfoQueue.front().hlosQtimer4);
        }
    }
    if (needReportEnginePositions) {
        for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
            if (nullptr != it->second.engineLocationsInfoCb) {
                it->second.engineLocationsInfoCb(count, locationInfo);
            }
        }
    }
}

void
GnssAdapter::reportSvEvent(const GnssSvNotification& svNotify,
                           bool fromEngineHub)
{
    if (!fromEngineHub) {
        mEngHubProxy->gnssReportSv(svNotify);
        if (true == initEngHubProxy()){
            return;
        }
    }

    struct MsgReportSv : public LocMsg {
        GnssAdapter& mAdapter;
        const GnssSvNotification mSvNotify;
        inline MsgReportSv(GnssAdapter& adapter,
                           const GnssSvNotification& svNotify) :
            LocMsg(),
            mAdapter(adapter),
            mSvNotify(svNotify) {}
        inline virtual void proc() const {
            mAdapter.reportSv((GnssSvNotification&)mSvNotify);
        }
    };

    sendMsg(new MsgReportSv(*this, svNotify));
}

void
GnssAdapter::reportSv(GnssSvNotification& svNotify)
{
    int numSv = svNotify.count;
    uint16_t gnssSvId = 0;
    uint64_t svUsedIdMask = 0;
    for (int i=0; i < numSv; i++) {
        svUsedIdMask = 0;
        gnssSvId = svNotify.gnssSvs[i].svId;
        GnssSignalTypeMask signalTypeMask = svNotify.gnssSvs[i].gnssSignalTypeMask;
        switch (svNotify.gnssSvs[i].type) {
            case GNSS_SV_TYPE_GPS:
                if (mGnssSvIdUsedInPosAvail) {
                    if (mGnssMbSvIdUsedInPosAvail) {
                        switch (signalTypeMask) {
                        case GNSS_SIGNAL_GPS_L1CA:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.gps_l1ca_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_GPS_L1C:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.gps_l1c_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_GPS_L2:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.gps_l2_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_GPS_L5:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.gps_l5_sv_used_ids_mask;
                            break;
                        }
                    } else {
                        svUsedIdMask = mGnssSvIdUsedInPosition.gps_sv_used_ids_mask;
                    }
                }
                break;
            case GNSS_SV_TYPE_GLONASS:
                if (mGnssSvIdUsedInPosAvail) {
                    if (mGnssMbSvIdUsedInPosAvail) {
                        switch (signalTypeMask) {
                        case GNSS_SIGNAL_GLONASS_G1:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.glo_g1_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_GLONASS_G2:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.glo_g2_sv_used_ids_mask;
                            break;
                        }
                    } else {
                        svUsedIdMask = mGnssSvIdUsedInPosition.glo_sv_used_ids_mask;
                    }
                }
                // map the svid to respective constellation range 1..xx
                // then repective constellation svUsedIdMask map correctly to svid
                gnssSvId = gnssSvId - GLO_SV_PRN_MIN + 1;
                break;
            case GNSS_SV_TYPE_BEIDOU:
                if (mGnssSvIdUsedInPosAvail) {
                    if (mGnssMbSvIdUsedInPosAvail) {
                        switch (signalTypeMask) {
                        case GNSS_SIGNAL_BEIDOU_B1I:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.bds_b1i_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_BEIDOU_B1C:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.bds_b1c_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_BEIDOU_B2I:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.bds_b2i_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_BEIDOU_B2AI:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.bds_b2ai_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_BEIDOU_B2AQ:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.bds_b2aq_sv_used_ids_mask;
                            break;
                        }
                    } else {
                        svUsedIdMask = mGnssSvIdUsedInPosition.bds_sv_used_ids_mask;
                    }
                }
                gnssSvId = gnssSvId - BDS_SV_PRN_MIN + 1;
                break;
            case GNSS_SV_TYPE_GALILEO:
                if (mGnssSvIdUsedInPosAvail) {
                    if (mGnssMbSvIdUsedInPosAvail) {
                        switch (signalTypeMask) {
                        case GNSS_SIGNAL_GALILEO_E1:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.gal_e1_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_GALILEO_E5A:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.gal_e5a_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_GALILEO_E5B:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.gal_e5b_sv_used_ids_mask;
                            break;
                        }
                    } else {
                        svUsedIdMask = mGnssSvIdUsedInPosition.gal_sv_used_ids_mask;
                    }
                }
                gnssSvId = gnssSvId - GAL_SV_PRN_MIN + 1;
                break;
            case GNSS_SV_TYPE_QZSS:
                if (mGnssSvIdUsedInPosAvail) {
                    if (mGnssMbSvIdUsedInPosAvail) {
                        switch (signalTypeMask) {
                        case GNSS_SIGNAL_QZSS_L1CA:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.qzss_l1ca_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_QZSS_L1S:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.qzss_l1s_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_QZSS_L2:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.qzss_l2_sv_used_ids_mask;
                            break;
                        case GNSS_SIGNAL_QZSS_L5:
                            svUsedIdMask = mGnssMbSvIdUsedInPosition.qzss_l5_sv_used_ids_mask;
                            break;
                        }
                    } else {
                        svUsedIdMask = mGnssSvIdUsedInPosition.qzss_sv_used_ids_mask;
                    }
                }
                gnssSvId = gnssSvId - QZSS_SV_PRN_MIN + 1;
                break;
            case GNSS_SV_TYPE_NAVIC:
                if (mGnssSvIdUsedInPosAvail) {
                    svUsedIdMask = mGnssSvIdUsedInPosition.navic_sv_used_ids_mask;
                }
                gnssSvId = gnssSvId - NAVIC_SV_PRN_MIN + 1;
                break;
            default:
                svUsedIdMask = 0;
                break;
        }

        // If SV ID was used in previous position fix, then set USED_IN_FIX
        // flag, else clear the USED_IN_FIX flag.
        if (svFitsMask(svUsedIdMask, gnssSvId) && (svUsedIdMask & (1ULL << (gnssSvId - 1)))) {
            svNotify.gnssSvs[i].gnssSvOptionsMask |= GNSS_SV_OPTIONS_USED_IN_FIX_BIT;
        }
    }

    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
        if (nullptr != it->second.gnssSvCb) {
            it->second.gnssSvCb(svNotify);
        }
    }

    if (NMEA_PROVIDER_AP == ContextBase::mGps_conf.NMEA_PROVIDER &&
        !mTimeBasedTrackingSessions.empty()) {
        std::vector<std::string> nmeaArraystr;
        loc_nmea_generate_sv(svNotify, nmeaArraystr);
        stringstream ss;
        for (auto itor = nmeaArraystr.begin(); itor != nmeaArraystr.end(); ++itor) {
            ss << *itor;
        }
        string s = ss.str();
        reportNmea(s.c_str(), s.length());
    }

    mGnssSvIdUsedInPosAvail = false;
    mGnssMbSvIdUsedInPosAvail = false;
}

void
GnssAdapter::reportNmeaEvent(const char* nmea, size_t length)
{
    if (NMEA_PROVIDER_AP == ContextBase::mGps_conf.NMEA_PROVIDER &&
        !loc_nmea_is_debug(nmea, length)) {
        return;
    }

    struct MsgReportNmea : public LocMsg {
        GnssAdapter& mAdapter;
        const char* mNmea;
        size_t mLength;
        inline MsgReportNmea(GnssAdapter& adapter,
                             const char* nmea,
                             size_t length) :
            LocMsg(),
            mAdapter(adapter),
            mNmea(new char[length+1]),
            mLength(length) {
                if (mNmea == nullptr) {
                    LOC_LOGE("%s] new allocation failed, fatal error.", __func__);
                    return;
                }
                strlcpy((char*)mNmea, nmea, length+1);
            }
        inline virtual ~MsgReportNmea()
        {
            delete[] mNmea;
        }
        inline virtual void proc() const {
            // extract bug report info - this returns true if consumed by systemstatus
            bool ret = false;
            SystemStatus* s = mAdapter.getSystemStatus();
            if (nullptr != s) {
                ret = s->setNmeaString(mNmea, mLength);
            }
            if (false == ret) {
                // forward NMEA message to upper layer
                mAdapter.reportNmea(mNmea, mLength);
                // DgnssNtrip
                mAdapter.reportGGAToNtrip(mNmea);
            }
        }
    };

    sendMsg(new MsgReportNmea(*this, nmea, length));
}

void
GnssAdapter::reportNmea(const char* nmea, size_t length)
{
    GnssNmeaNotification nmeaNotification = {};
    nmeaNotification.size = sizeof(GnssNmeaNotification);

    struct timeval tv;
    gettimeofday(&tv, (struct timezone *) NULL);
    int64_t now = tv.tv_sec * 1000LL + tv.tv_usec / 1000;
    nmeaNotification.timestamp = now;
    nmeaNotification.nmea = nmea;
    nmeaNotification.length = length;

    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
        if (nullptr != it->second.gnssNmeaCb) {
            it->second.gnssNmeaCb(nmeaNotification);
        }
    }

    if (isNMEAPrintEnabled()) {
        LOC_LOGd("[%" PRId64 ", %zu] %s", now, length, nmea);
    }
}

void
GnssAdapter::reportDataEvent(const GnssDataNotification& dataNotify,
                             int msInWeek)
{
    struct MsgReportData : public LocMsg {
        GnssAdapter& mAdapter;
        GnssDataNotification mDataNotify;
        int mMsInWeek;
        inline MsgReportData(GnssAdapter& adapter,
                             const GnssDataNotification& dataNotify,
                             int msInWeek) :
            LocMsg(),
            mAdapter(adapter),
            mDataNotify(dataNotify),
            mMsInWeek(msInWeek) {
        }
        inline virtual void proc() const {
            if (mMsInWeek >= 0) {
                mAdapter.getDataInformation((GnssDataNotification&)mDataNotify,
                                            mMsInWeek);
            }
            mAdapter.reportData((GnssDataNotification&)mDataNotify);
        }
    };

    sendMsg(new MsgReportData(*this, dataNotify, msInWeek));
}

void
GnssAdapter::reportData(GnssDataNotification& dataNotify)
{
    for (int sig = 0; sig < GNSS_LOC_MAX_NUMBER_OF_SIGNAL_TYPES; sig++) {
        if (GNSS_LOC_DATA_JAMMER_IND_BIT ==
            (dataNotify.gnssDataMask[sig] & GNSS_LOC_DATA_JAMMER_IND_BIT)) {
            LOC_LOGv("jammerInd[%d]=%f", sig, dataNotify.jammerInd[sig]);
        }
        if (GNSS_LOC_DATA_AGC_BIT ==
            (dataNotify.gnssDataMask[sig] & GNSS_LOC_DATA_AGC_BIT)) {
            LOC_LOGv("agc[%d]=%f", sig, dataNotify.agc[sig]);
        }
    }
    for (auto it = mClientData.begin(); it != mClientData.end(); ++it) {
        if (nullptr != it->second.gnssDataCb) {
            it->second.gnssDataCb(dataNotify);
        }
    }
}

bool
GnssAdapter::requestNiNotifyEvent(const GnssNiNotification &notify, const void* data,
                                  const LocInEmergency emergencyState)
{
    LOC_LOGI("%s]: notif_type: %d, timeout: %d, default_resp: %d"
             "requestor_id: %s (encoding: %d) text: %s text (encoding: %d) extras: %s",
             __func__, notify.type, notify.timeout, notify.timeoutResponse,
             notify.requestor, notify.requestorEncoding,
             notify.message, notify.messageEncoding, notify.extras);

    struct MsgReportNiNotify : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        const GnssNiNotification mNotify;
        const void* mData;
        const LocInEmergency mEmergencyState;
        inline MsgReportNiNotify(GnssAdapter& adapter,
                                 LocApiBase& api,
                                 const GnssNiNotification& notify,
                                 const void* data,
                                 const LocInEmergency emergencyState) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mNotify(notify),
            mData(data),
            mEmergencyState(emergencyState) {}
        inline virtual void proc() const {
            bool bIsInEmergency = false;
            bool bInformNiAccept = false;

            bIsInEmergency = ((LOC_IN_EMERGENCY_UNKNOWN == mEmergencyState) &&
                    mAdapter.getE911State()) ||                // older modems
                    (LOC_IN_EMERGENCY_SET == mEmergencyState); // newer modems

            if ((mAdapter.mSupportNfwControl || 0 == mAdapter.getAfwControlId()) &&
                (GNSS_NI_TYPE_SUPL == mNotify.type || GNSS_NI_TYPE_EMERGENCY_SUPL == mNotify.type)
                && !bIsInEmergency &&
                !(GNSS_NI_OPTIONS_PRIVACY_OVERRIDE_BIT & mNotify.options) &&
                (GNSS_CONFIG_GPS_LOCK_NI & ContextBase::mGps_conf.GPS_LOCK) &&
                1 == ContextBase::mGps_conf.NI_SUPL_DENY_ON_NFW_LOCKED) {
                /* If all these conditions are TRUE, then deny the NI Request:
                -'Q' Lock behavior OR 'P' Lock behavior and GNSS is Locked
                -NI SUPL Request type or NI SUPL Emergency Request type
                -NOT in an Emergency Call Session
                -NOT Privacy Override option
                -NFW is locked and config item NI_SUPL_DENY_ON_NFW_LOCKED = 1 */
                mApi.informNiResponse(GNSS_NI_RESPONSE_DENY, mData);
            } else if (GNSS_NI_TYPE_EMERGENCY_SUPL == mNotify.type) {
                bInformNiAccept = bIsInEmergency ||
                        (GNSS_CONFIG_SUPL_EMERGENCY_SERVICES_NO == ContextBase::mGps_conf.SUPL_ES);

                if (bInformNiAccept) {
                    mAdapter.requestNiNotify(mNotify, mData, bInformNiAccept);
                } else {
                    mApi.informNiResponse(GNSS_NI_RESPONSE_DENY, mData);
                }
            } else if (GNSS_NI_TYPE_CONTROL_PLANE == mNotify.type) {
                if (bIsInEmergency && (1 == ContextBase::mGps_conf.CP_MTLR_ES)) {
                    mApi.informNiResponse(GNSS_NI_RESPONSE_ACCEPT, mData);
                }
                else {
                    mAdapter.requestNiNotify(mNotify, mData, false);
                }
            } else {
                mAdapter.requestNiNotify(mNotify, mData, false);
            }
        }
    };

    sendMsg(new MsgReportNiNotify(*this, *mLocApi, notify, data, emergencyState));

    return true;
}

void
GnssAdapter::reportLocationSystemInfoEvent(const LocationSystemInfo & locationSystemInfo) {

    // send system info to engine hub
    mEngHubProxy->gnssReportSystemInfo(locationSystemInfo);

    struct MsgLocationSystemInfo : public LocMsg {
        GnssAdapter& mAdapter;
        LocationSystemInfo mSystemInfo;
        inline MsgLocationSystemInfo(GnssAdapter& adapter,
            const LocationSystemInfo& systemInfo) :
            LocMsg(),
            mAdapter(adapter),
            mSystemInfo(systemInfo) {}
        inline virtual void proc() const {
            mAdapter.reportLocationSystemInfo(mSystemInfo);
        }
    };

    sendMsg(new MsgLocationSystemInfo(*this, locationSystemInfo));
}

void
GnssAdapter::reportLocationSystemInfo(const LocationSystemInfo & locationSystemInfo) {
    // save the info into the master copy piece by piece, as other system info
    // may come at different time
    if (locationSystemInfo.systemInfoMask & LOCATION_SYS_INFO_LEAP_SECOND) {
        mLocSystemInfo.systemInfoMask |= LOCATION_SYS_INFO_LEAP_SECOND;

        const LeapSecondSystemInfo &srcLeapSecondSysInfo = locationSystemInfo.leapSecondSysInfo;
        LeapSecondSystemInfo &dstLeapSecondSysInfo = mLocSystemInfo.leapSecondSysInfo;
        if (srcLeapSecondSysInfo.leapSecondInfoMask &
                LEAP_SECOND_SYS_INFO_CURRENT_LEAP_SECONDS_BIT) {
            dstLeapSecondSysInfo.leapSecondInfoMask |=
                LEAP_SECOND_SYS_INFO_CURRENT_LEAP_SECONDS_BIT;
            dstLeapSecondSysInfo.leapSecondCurrent = srcLeapSecondSysInfo.leapSecondCurrent;
        }
        // once leap second change event is complete, modem may send up event invalidate the leap
        // second change info while AP is still processing report during leap second transition
        // so, we choose to keep this info around even though it is old
        if (srcLeapSecondSysInfo.leapSecondInfoMask & LEAP_SECOND_SYS_INFO_LEAP_SECOND_CHANGE_BIT) {
            dstLeapSecondSysInfo.leapSecondInfoMask |= LEAP_SECOND_SYS_INFO_LEAP_SECOND_CHANGE_BIT;
            dstLeapSecondSysInfo.leapSecondChangeInfo = srcLeapSecondSysInfo.leapSecondChangeInfo;
        }
    }

    // we received new info, inform client of the newly received info
    if (locationSystemInfo.systemInfoMask) {
        for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
            if (it->second.locationSystemInfoCb != nullptr) {
                it->second.locationSystemInfoCb(locationSystemInfo);
            }
        }
    }
}

static void* niThreadProc(void *args)
{
    NiSession* pSession = (NiSession*)args;
    int rc = 0;          /* return code from pthread calls */

    struct timespec present_time;
    struct timespec expire_time;

    pthread_mutex_lock(&pSession->tLock);
    /* Calculate absolute expire time */
    clock_gettime(CLOCK_MONOTONIC, &present_time);
    expire_time.tv_sec  = present_time.tv_sec + pSession->respTimeLeft;
    expire_time.tv_nsec = present_time.tv_nsec;
    LOC_LOGD("%s]: time out set for abs time %ld with delay %d sec",
             __func__, (long)expire_time.tv_sec, pSession->respTimeLeft);

    while (!pSession->respRecvd) {
        rc = pthread_cond_timedwait(&pSession->tCond,
                                    &pSession->tLock,
                                    &expire_time);
        if (rc == ETIMEDOUT) {
            pSession->resp = GNSS_NI_RESPONSE_NO_RESPONSE;
            LOC_LOGD("%s]: time out after valting for specified time. Ret Val %d",
                     __func__, rc);
            break;
        }
    }
    LOC_LOGD("%s]: Java layer has sent us a user response and return value from "
             "pthread_cond_timedwait = %d pSession->resp is %u", __func__, rc, pSession->resp);
    pSession->respRecvd = false; /* Reset the user response flag for the next session*/

    // adding this check to support modem restart, in which case, we need the thread
    // to exit without calling sending data. We made sure that rawRequest is NULL in
    // loc_eng_ni_reset_on_engine_restart()
    GnssAdapter* adapter = pSession->adapter;
    GnssNiResponse resp;
    void* rawRequest = NULL;
    bool sendResponse = false;

    if (NULL != pSession->rawRequest) {
        if (pSession->resp != GNSS_NI_RESPONSE_IGNORE) {
            resp = pSession->resp;
            rawRequest = pSession->rawRequest;
            sendResponse = true;
        } else {
            free(pSession->rawRequest);
        }
        pSession->rawRequest = NULL;
    }
    pthread_mutex_unlock(&pSession->tLock);

    pSession->respTimeLeft = 0;
    pSession->reqID = 0;

    if (sendResponse) {
        adapter->gnssNiResponseCommand(resp, rawRequest);
    }

    return NULL;
}

bool
GnssAdapter::requestNiNotify(const GnssNiNotification& notify, const void* data,
                             const bool bInformNiAccept)
{
    NiSession* pSession = NULL;
    gnssNiCallback gnssNiCb = nullptr;

    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
        if (nullptr != it->second.gnssNiCb) {
            gnssNiCb = it->second.gnssNiCb;
            break;
        }
    }
    if (nullptr == gnssNiCb) {
        if (GNSS_NI_TYPE_EMERGENCY_SUPL == notify.type) {
            if (bInformNiAccept) {
                mLocApi->informNiResponse(GNSS_NI_RESPONSE_ACCEPT, data);
                NiData& niData = getNiData();
                // ignore any SUPL NI non-Es session if a SUPL NI ES is accepted
                if (NULL != niData.session.rawRequest) {
                    pthread_mutex_lock(&niData.session.tLock);
                    niData.session.resp = GNSS_NI_RESPONSE_IGNORE;
                    niData.session.respRecvd = true;
                    pthread_cond_signal(&niData.session.tCond);
                    pthread_mutex_unlock(&niData.session.tLock);
                }
            }
        }
        EXIT_LOG(%s, "no clients with gnssNiCb.");
        return false;
    }

    if (notify.type == GNSS_NI_TYPE_EMERGENCY_SUPL) {
        if (NULL != mNiData.sessionEs.rawRequest) {
            LOC_LOGI("%s]: supl es NI in progress, new supl es NI ignored, type: %d",
                     __func__, notify.type);
            if (NULL != data) {
                free((void*)data);
            }
        } else {
            pSession = &mNiData.sessionEs;
        }
    } else {
        if (NULL != mNiData.session.rawRequest ||
            NULL != mNiData.sessionEs.rawRequest) {
            LOC_LOGI("%s]: supl NI in progress, new supl NI ignored, type: %d",
                     __func__, notify.type);
            if (NULL != data) {
                free((void*)data);
            }
        } else {
            pSession = &mNiData.session;
        }
    }

    if (pSession) {
        /* Save request */
        pSession->rawRequest = (void*)data;
        pSession->reqID = ++mNiData.reqIDCounter;
        pSession->adapter = this;

        int sessionId = pSession->reqID;

        /* For robustness, spawn a thread at this point to timeout to clear up the notification
         * status, even though the OEM layer in java does not do so.
         **/
        pSession->respTimeLeft =
             5 + (notify.timeout != 0 ? notify.timeout : LOC_NI_NO_RESPONSE_TIME);

        int rc = 0;
        rc = pthread_create(&pSession->thread, NULL, niThreadProc, pSession);
        if (rc) {
            LOC_LOGE("%s]: Loc NI thread is not created.", __func__);
        }
        rc = pthread_detach(pSession->thread);
        if (rc) {
            LOC_LOGE("%s]: Loc NI thread is not detached.", __func__);
        }

        if (nullptr != gnssNiCb) {
            gnssNiCb(sessionId, notify);
        }
    }

    return true;
}

void
GnssAdapter::reportGnssMeasurementsEvent(const GnssMeasurements& gnssMeasurements,
                                            int msInWeek)
{
    LOC_LOGD("%s]: msInWeek=%d", __func__, msInWeek);

    if (0 != gnssMeasurements.gnssMeasNotification.count) {
        struct MsgReportGnssMeasurementData : public LocMsg {
            GnssAdapter& mAdapter;
            GnssMeasurements mGnssMeasurements;
            GnssMeasurementsNotification mMeasurementsNotify;
            inline MsgReportGnssMeasurementData(GnssAdapter& adapter,
                                                const GnssMeasurements& gnssMeasurements,
                                                int msInWeek) :
                    LocMsg(),
                    mAdapter(adapter),
                    mMeasurementsNotify(gnssMeasurements.gnssMeasNotification) {
                if (-1 != msInWeek) {
                    mAdapter.getAgcInformation(mMeasurementsNotify, msInWeek);
                }
            }
            inline virtual void proc() const {
                mAdapter.reportGnssMeasurementData(mMeasurementsNotify);
            }
        };

        sendMsg(new MsgReportGnssMeasurementData(*this, gnssMeasurements, msInWeek));
    }
    mEngHubProxy->gnssReportSvMeasurement(gnssMeasurements.gnssSvMeasurementSet);
    if (mDGnssNeedReport) {
        reportDGnssDataUsable(gnssMeasurements.gnssSvMeasurementSet);
    }
}

void
GnssAdapter::reportGnssMeasurementData(const GnssMeasurementsNotification& measurements)
{
    for (auto it=mClientData.begin(); it != mClientData.end(); ++it) {
        if (nullptr != it->second.gnssMeasurementsCb) {
            it->second.gnssMeasurementsCb(measurements);
        }
    }
}

void
GnssAdapter::reportDGnssDataUsable(const GnssSvMeasurementSet &svMeasurementSet)
{
    uint32_t i;
    bool preDGnssDataUsage = mDGnssDataUsage;

    mDGnssDataUsage = false;
    for (i = 0; i < svMeasurementSet.svMeasCount; i++) {
        const Gnss_SVMeasurementStructType& svMeas = svMeasurementSet.svMeas[i];
        if (svMeas.dgnssSvMeas.dgnssMeasStatus) {
            mDGnssDataUsage = true;
            break;
        }
    }
    if (mDGnssDataUsage != preDGnssDataUsage) {
        if (mCdfwInterface) {
            mCdfwInterface->reportUsable(mQDgnssListenerHDL, mDGnssDataUsage);
        }
    }
}

void
GnssAdapter::reportSvPolynomialEvent(GnssSvPolynomial &svPolynomial)
{
    LOC_LOGD("%s]: ", __func__);
    mEngHubProxy->gnssReportSvPolynomial(svPolynomial);
}

void
GnssAdapter::reportSvEphemerisEvent(GnssSvEphemerisReport & svEphemeris)
{
    LOC_LOGD("%s]:", __func__);
    mEngHubProxy->gnssReportSvEphemeris(svEphemeris);
}


bool
GnssAdapter::requestOdcpiEvent(OdcpiRequestInfo& request)
{
    struct MsgRequestOdcpi : public LocMsg {
        GnssAdapter& mAdapter;
        OdcpiRequestInfo mOdcpiRequest;
        inline MsgRequestOdcpi(GnssAdapter& adapter, OdcpiRequestInfo& request) :
                LocMsg(),
                mAdapter(adapter),
                mOdcpiRequest(request) {}
        inline virtual void proc() const {
            mAdapter.requestOdcpi(mOdcpiRequest);
        }
    };

    sendMsg(new MsgRequestOdcpi(*this, request));
    return true;
}

void GnssAdapter::requestOdcpi(const OdcpiRequestInfo& request)
{
    if (nullptr != mOdcpiRequestCb) {
        LOC_LOGd("request: type %d, tbf %d, isEmergency %d"
                 " requestActive: %d timerActive: %d",
                 request.type, request.tbfMillis, request.isEmergencyMode,
                 mOdcpiRequestActive, mOdcpiTimer.isActive());
        // ODCPI START and ODCPI STOP from modem can come in quick succession
        // so the mOdcpiTimer helps avoid spamming the framework as well as
        // extending the odcpi session past 30 seconds if needed
        if (ODCPI_REQUEST_TYPE_START == request.type) {
            if (false == mOdcpiRequestActive && false == mOdcpiTimer.isActive()) {
                mOdcpiRequestCb(request);
                mOdcpiRequestActive = true;
                mOdcpiTimer.start();
            // if the current active odcpi session is non-emergency, and the new
            // odcpi request is emergency, replace the odcpi request with new request
            // and restart the timer
            } else if (false == mOdcpiRequest.isEmergencyMode &&
                       true == request.isEmergencyMode) {
                mOdcpiRequestCb(request);
                mOdcpiRequestActive = true;
                if (true == mOdcpiTimer.isActive()) {
                    mOdcpiTimer.restart();
                } else {
                    mOdcpiTimer.start();
                }
            // if ODCPI request is not active but the timer is active, then
            // just update the active state and wait for timer to expire
            // before requesting new ODCPI to avoid spamming ODCPI requests
            } else if (false == mOdcpiRequestActive && true == mOdcpiTimer.isActive()) {
                mOdcpiRequestActive = true;
            }
            mOdcpiRequest = request;
        // the request is being stopped, but allow timer to expire first
        // before stopping the timer just in case more ODCPI requests come
        // to avoid spamming more odcpi requests to the framework
        } else if (ODCPI_REQUEST_TYPE_STOP == request.type) {
            LOC_LOGd("request: type %d, isEmergency %d", request.type, request.isEmergencyMode);
            mOdcpiRequestCb(request);
            mOdcpiRequestActive = false;
        } else {
            LOC_LOGE("Invalid ODCPI request type..");
        }
    } else {
        LOC_LOGw("ODCPI request not supported");
    }
}

bool GnssAdapter::reportDeleteAidingDataEvent(GnssAidingData& aidingData)
{
    LOC_LOGD("%s]:", __func__);
    mEngHubProxy->gnssDeleteAidingData(aidingData);
    return true;
}

bool GnssAdapter::reportKlobucharIonoModelEvent(GnssKlobucharIonoModel & ionoModel)
{
    LOC_LOGD("%s]:", __func__);
    mEngHubProxy->gnssReportKlobucharIonoModel(ionoModel);
    return true;
}

bool GnssAdapter::reportGnssAdditionalSystemInfoEvent(
        GnssAdditionalSystemInfo & additionalSystemInfo)
{
    LOC_LOGD("%s]:", __func__);
    mEngHubProxy->gnssReportAdditionalSystemInfo(additionalSystemInfo);
    return true;
}

bool GnssAdapter::reportQwesCapabilities(
        const std::unordered_map<LocationQwesFeatureType, bool> &featureMap)
{
    struct MsgReportQwesFeatureStatus : public LocMsg {
        GnssAdapter& mAdapter;
        const std::unordered_map<LocationQwesFeatureType, bool> mFeatureMap;
        inline MsgReportQwesFeatureStatus(GnssAdapter& adapter,
                const std::unordered_map<LocationQwesFeatureType, bool> &featureMap) :
            LocMsg(),
            mAdapter(adapter),
            mFeatureMap(std::move(featureMap)) {}
        inline virtual void proc() const {
            LOC_LOGi("ReportQwesFeatureStatus before caps %" PRIx64 " ",
                mAdapter.getCapabilities());
            ContextBase::setQwesFeatureStatus(mFeatureMap);
            LOC_LOGi("ReportQwesFeatureStatus After caps %" PRIx64 " ",
                mAdapter.getCapabilities());
            mAdapter.broadcastCapabilities(mAdapter.getCapabilities());
        }
    };

    sendMsg(new MsgReportQwesFeatureStatus(*this, featureMap));
    return true;
}

void GnssAdapter::initOdcpiCommand(const OdcpiRequestCallback& callback,
                                   OdcpiPrioritytype priority)
{
    struct MsgInitOdcpi : public LocMsg {
        GnssAdapter& mAdapter;
        OdcpiRequestCallback mOdcpiCb;
        OdcpiPrioritytype mPriority;
        inline MsgInitOdcpi(GnssAdapter& adapter,
                const OdcpiRequestCallback& callback,
                OdcpiPrioritytype priority) :
                LocMsg(),
                mAdapter(adapter),
                mOdcpiCb(callback), mPriority(priority){}
        inline virtual void proc() const {
            mAdapter.initOdcpi(mOdcpiCb, mPriority);
        }
    };

    sendMsg(new MsgInitOdcpi(*this, callback, priority));
}

void GnssAdapter::initOdcpi(const OdcpiRequestCallback& callback,
            OdcpiPrioritytype priority)
{
    LOC_LOGd("In priority: %d, Curr priority: %d", priority, mCallbackPriority);
    if (priority >= mCallbackPriority) {
        mOdcpiRequestCb = callback;
        mCallbackPriority = priority;
        /* Register for WIFI request */
        updateEvtMask(LOC_API_ADAPTER_BIT_REQUEST_WIFI,
                LOC_REGISTRATION_MASK_ENABLED);
    }
}

void GnssAdapter::injectOdcpiCommand(const Location& location)
{
    struct MsgInjectOdcpi : public LocMsg {
        GnssAdapter& mAdapter;
        Location mLocation;
        inline MsgInjectOdcpi(GnssAdapter& adapter, const Location& location) :
                LocMsg(),
                mAdapter(adapter),
                mLocation(location) {}
        inline virtual void proc() const {
            mAdapter.injectOdcpi(mLocation);
        }
    };

    sendMsg(new MsgInjectOdcpi(*this, location));
}

void GnssAdapter::injectOdcpi(const Location& location)
{
    LOC_LOGd("ODCPI Injection: requestActive: %d timerActive: %d"
             "lat %.7f long %.7f",
            mOdcpiRequestActive, mOdcpiTimer.isActive(),
            location.latitude, location.longitude);

    mLocApi->injectPosition(location, true);
}

// Called in the context of LocTimer thread
void OdcpiTimer::timeOutCallback()
{
    if (nullptr != mAdapter) {
        mAdapter->odcpiTimerExpireEvent();
    }
}

// Called in the context of LocTimer thread
void GnssAdapter::odcpiTimerExpireEvent()
{
    struct MsgOdcpiTimerExpire : public LocMsg {
        GnssAdapter& mAdapter;
        inline MsgOdcpiTimerExpire(GnssAdapter& adapter) :
                LocMsg(),
                mAdapter(adapter) {}
        inline virtual void proc() const {
            mAdapter.odcpiTimerExpire();
        }
    };
    sendMsg(new MsgOdcpiTimerExpire(*this));
}
void GnssAdapter::odcpiTimerExpire()
{
    LOC_LOGd("requestActive: %d timerActive: %d",
            mOdcpiRequestActive, mOdcpiTimer.isActive());

    // if ODCPI request is still active after timer
    // expires, request again and restart timer
    if (mOdcpiRequestActive) {
        mOdcpiRequestCb(mOdcpiRequest);
        mOdcpiTimer.restart();
    } else {
        mOdcpiTimer.stop();
    }
}

void
GnssAdapter::invokeGnssEnergyConsumedCallback(uint64_t energyConsumedSinceFirstBoot) {
    if (mGnssEnergyConsumedCb) {
        mGnssEnergyConsumedCb(energyConsumedSinceFirstBoot);
        mGnssEnergyConsumedCb = nullptr;
    }
}

bool
GnssAdapter::reportGnssEngEnergyConsumedEvent(uint64_t energyConsumedSinceFirstBoot){
    LOC_LOGD("%s]: %" PRIu64 " ", __func__, energyConsumedSinceFirstBoot);

    struct MsgReportGnssGnssEngEnergyConsumed : public LocMsg {
        GnssAdapter& mAdapter;
        uint64_t mGnssEnergyConsumedSinceFirstBoot;
        inline MsgReportGnssGnssEngEnergyConsumed(GnssAdapter& adapter,
                                                  uint64_t energyConsumed) :
                LocMsg(),
                mAdapter(adapter),
                mGnssEnergyConsumedSinceFirstBoot(energyConsumed) {}
        inline virtual void proc() const {
            mAdapter.invokeGnssEnergyConsumedCallback(mGnssEnergyConsumedSinceFirstBoot);
        }
    };

    sendMsg(new MsgReportGnssGnssEngEnergyConsumed(*this, energyConsumedSinceFirstBoot));
    return true;
}

void GnssAdapter::initDefaultAgps() {
    LOC_LOGD("%s]: ", __func__);
    void *handle = nullptr;

    LocAgpsGetAgpsCbInfo getAgpsCbInfo =
        (LocAgpsGetAgpsCbInfo)dlGetSymFromLib(handle, "libloc_net_iface.so",
            "LocNetIfaceAgps_getAgpsCbInfo");
    // Below step is to make sure we init nativeAgpsHandler
    // for Android platforms only
    AgpsCbInfo cbInfo = {};
    if (nullptr != getAgpsCbInfo) {
        cbInfo = getAgpsCbInfo(agpsOpenResultCb, agpsCloseResultCb, this);
    } else {
        cbInfo = mNativeAgpsHandler.getAgpsCbInfo();
    }

    if (cbInfo.statusV4Cb == nullptr) {
        LOC_LOGE("%s]: statusV4Cb is nullptr!", __func__);
        dlclose(handle);
        return;
    }

    initAgps(cbInfo);
}

void GnssAdapter::initDefaultAgpsCommand() {
    LOC_LOGD("%s]: ", __func__);

    struct MsgInitDefaultAgps : public LocMsg {
        GnssAdapter& mAdapter;
        inline MsgInitDefaultAgps(GnssAdapter& adapter) :
            LocMsg(),
            mAdapter(adapter) {
            }
        inline virtual void proc() const {
            mAdapter.initDefaultAgps();
        }
    };

    sendMsg(new MsgInitDefaultAgps(*this));
}

/* INIT LOC AGPS MANAGER */

void GnssAdapter::initAgps(const AgpsCbInfo& cbInfo) {
    LOC_LOGD("%s]:cbInfo.atlType - %d", __func__, cbInfo.atlType);

    if (!((ContextBase::mGps_conf.CAPABILITIES & LOC_GPS_CAPABILITY_MSB) ||
            (ContextBase::mGps_conf.CAPABILITIES & LOC_GPS_CAPABILITY_MSA))) {
        return;
    }

    mAgpsManager.createAgpsStateMachines(cbInfo);
    /* Register for AGPS event mask */
    updateEvtMask(LOC_API_ADAPTER_BIT_LOCATION_SERVER_REQUEST,
            LOC_REGISTRATION_MASK_ENABLED);
}

void GnssAdapter::initAgpsCommand(const AgpsCbInfo& cbInfo){
    LOC_LOGI("GnssAdapter::initAgpsCommand");

    /* Message to initialize AGPS module */
    struct AgpsMsgInit: public LocMsg {
        const AgpsCbInfo mCbInfo;
        GnssAdapter& mAdapter;

        inline AgpsMsgInit(const AgpsCbInfo& cbInfo,
                GnssAdapter& adapter) :
                LocMsg(), mCbInfo(cbInfo), mAdapter(adapter) {
            LOC_LOGV("AgpsMsgInit");
        }

        inline virtual void proc() const {
            LOC_LOGV("AgpsMsgInit::proc()");
            mAdapter.initAgps(mCbInfo);
        }
    };

    /* Send message to initialize AGPS Manager */
    sendMsg(new AgpsMsgInit(cbInfo, *this));
}

void GnssAdapter::initNfwCommand(const NfwCbInfo& cbInfo) {
    LOC_LOGi("GnssAdapter::initNfwCommand");

    /* Message to initialize NFW */
    struct MsgInitNfw : public LocMsg {
        const NfwCbInfo mCbInfo;
        GnssAdapter& mAdapter;

        inline MsgInitNfw(const NfwCbInfo& cbInfo,
            GnssAdapter& adapter) :
            LocMsg(), mCbInfo(cbInfo), mAdapter(adapter) {
            LOC_LOGv("MsgInitNfw");
        }

        inline virtual void proc() const {
            LOC_LOGv("MsgInitNfw::proc()");
            mAdapter.initNfw(mCbInfo);
        }
    };

    /* Send message to initialize NFW */
    sendMsg(new MsgInitNfw(cbInfo, *this));
}

void GnssAdapter::reportNfwNotificationEvent(GnssNfwNotification& notification) {
    LOC_LOGi("GnssAdapter::reportNfwNotificationEvent");

    struct MsgReportNfwNotification : public LocMsg {
        const GnssNfwNotification mNotification;
        GnssAdapter& mAdapter;

        inline MsgReportNfwNotification(const GnssNfwNotification& notification,
            GnssAdapter& adapter) :
            LocMsg(), mNotification(notification), mAdapter(adapter) {
            LOC_LOGv("MsgReportNfwNotification");
        }

        inline virtual void proc() const {
            LOC_LOGv("MsgReportNfwNotification::proc()");
            mAdapter.reportNfwNotification(mNotification);
        }
    };

    sendMsg(new MsgReportNfwNotification(notification, *this));
}

/* GnssAdapter::requestATL
 * Method triggered in QMI thread as part of handling below message:
 * eQMI_LOC_SERVER_REQUEST_OPEN_V02
 * Triggers the AGPS state machine to setup AGPS call for below WWAN types:
 * eQMI_LOC_WWAN_TYPE_INTERNET_V02
 * eQMI_LOC_WWAN_TYPE_AGNSS_V02
 * eQMI_LOC_WWAN_TYPE_AGNSS_EMERGENCY_V02 */
bool GnssAdapter::requestATL(int connHandle, LocAGpsType agpsType,
                             LocApnTypeMask apnTypeMask){

    LOC_LOGI("GnssAdapter::requestATL handle=%d agpsType=0x%X apnTypeMask=0x%X",
        connHandle, agpsType, apnTypeMask);

    sendMsg( new AgpsMsgRequestATL(
             &mAgpsManager, connHandle, (AGpsExtType)agpsType,
             apnTypeMask));

    return true;
}

/* GnssAdapter::releaseATL
 * Method triggered in QMI thread as part of handling below message:
 * eQMI_LOC_SERVER_REQUEST_CLOSE_V02
 * Triggers teardown of an existing AGPS call */
bool GnssAdapter::releaseATL(int connHandle){

    LOC_LOGI("GnssAdapter::releaseATL");

    /* Release SUPL/INTERNET/SUPL_ES ATL */
    struct AgpsMsgReleaseATL: public LocMsg {

        AgpsManager* mAgpsManager;
        int mConnHandle;

        inline AgpsMsgReleaseATL(AgpsManager* agpsManager, int connHandle) :
                LocMsg(), mAgpsManager(agpsManager), mConnHandle(connHandle) {

            LOC_LOGV("AgpsMsgReleaseATL");
        }

        inline virtual void proc() const {

            LOC_LOGV("AgpsMsgReleaseATL::proc()");
            mAgpsManager->releaseATL(mConnHandle);
        }
    };

    sendMsg( new AgpsMsgReleaseATL(&mAgpsManager, connHandle));

    return true;
}

void GnssAdapter::dataConnOpenCommand(
        AGpsExtType agpsType,
        const char* apnName, int apnLen, AGpsBearerType bearerType){

    LOC_LOGI("GnssAdapter::frameworkDataConnOpen");

    struct AgpsMsgAtlOpenSuccess: public LocMsg {

        AgpsManager* mAgpsManager;
        AGpsExtType mAgpsType;
        char* mApnName;
        int mApnLen;
        AGpsBearerType mBearerType;

        inline AgpsMsgAtlOpenSuccess(AgpsManager* agpsManager, AGpsExtType agpsType,
                const char* apnName, int apnLen, AGpsBearerType bearerType) :
                LocMsg(), mAgpsManager(agpsManager), mAgpsType(agpsType), mApnName(
                        new char[apnLen + 1]), mApnLen(apnLen), mBearerType(bearerType) {

            LOC_LOGV("AgpsMsgAtlOpenSuccess");
            if (mApnName == nullptr) {
                LOC_LOGE("%s] new allocation failed, fatal error.", __func__);
                // Reporting the failure here
                mAgpsManager->reportAtlClosed(mAgpsType);
                return;
            }
            memcpy(mApnName, apnName, apnLen);
            mApnName[apnLen] = 0;
        }

        inline ~AgpsMsgAtlOpenSuccess() {
            delete[] mApnName;
        }

        inline virtual void proc() const {

            LOC_LOGV("AgpsMsgAtlOpenSuccess::proc()");
            mAgpsManager->reportAtlOpenSuccess(mAgpsType, mApnName, mApnLen, mBearerType);
        }
    };
    // Added inital length checks for apnlen check to avoid security issues
    // In case of failure reporting the same
    if (NULL == apnName || apnLen <= 0 || apnLen > MAX_APN_LEN ||
            (strlen(apnName) != (unsigned)apnLen)) {
        LOC_LOGe("%s]: incorrect apnlen length or incorrect apnName", __func__);
        mAgpsManager.reportAtlClosed(agpsType);
    } else {
        sendMsg( new AgpsMsgAtlOpenSuccess(
                    &mAgpsManager, agpsType, apnName, apnLen, bearerType));
    }
}

void GnssAdapter::dataConnClosedCommand(AGpsExtType agpsType){

    LOC_LOGI("GnssAdapter::frameworkDataConnClosed");

    struct AgpsMsgAtlClosed: public LocMsg {

        AgpsManager* mAgpsManager;
        AGpsExtType mAgpsType;

        inline AgpsMsgAtlClosed(AgpsManager* agpsManager, AGpsExtType agpsType) :
                LocMsg(), mAgpsManager(agpsManager), mAgpsType(agpsType) {

            LOC_LOGV("AgpsMsgAtlClosed");
        }

        inline virtual void proc() const {

            LOC_LOGV("AgpsMsgAtlClosed::proc()");
            mAgpsManager->reportAtlClosed(mAgpsType);
        }
    };

    sendMsg( new AgpsMsgAtlClosed(&mAgpsManager, (AGpsExtType)agpsType));
}

void GnssAdapter::dataConnFailedCommand(AGpsExtType agpsType){

    LOC_LOGI("GnssAdapter::frameworkDataConnFailed");

    struct AgpsMsgAtlOpenFailed: public LocMsg {

        AgpsManager* mAgpsManager;
        AGpsExtType mAgpsType;

        inline AgpsMsgAtlOpenFailed(AgpsManager* agpsManager, AGpsExtType agpsType) :
                LocMsg(), mAgpsManager(agpsManager), mAgpsType(agpsType) {

            LOC_LOGV("AgpsMsgAtlOpenFailed");
        }

        inline virtual void proc() const {

            LOC_LOGV("AgpsMsgAtlOpenFailed::proc()");
            mAgpsManager->reportAtlOpenFailed(mAgpsType);
        }
    };

    sendMsg( new AgpsMsgAtlOpenFailed(&mAgpsManager, (AGpsExtType)agpsType));
}

void GnssAdapter::convertSatelliteInfo(std::vector<GnssDebugSatelliteInfo>& out,
                                       const GnssSvType& in_constellation,
                                       const SystemStatusReports& in)
{
    uint64_t sv_mask = 0ULL;
    uint32_t svid_min = 0;
    uint32_t svid_num = 0;
    uint32_t svid_idx = 0;

    uint64_t eph_health_good_mask = 0ULL;
    uint64_t eph_health_bad_mask = 0ULL;
    uint64_t server_perdiction_available_mask = 0ULL;
    float server_perdiction_age = 0.0f;

    // set constellationi based parameters
    switch (in_constellation) {
        case GNSS_SV_TYPE_GPS:
            svid_min = GNSS_BUGREPORT_GPS_MIN;
            svid_num = GPS_NUM;
            svid_idx = 0;
            if (!in.mSvHealth.empty()) {
                eph_health_good_mask = in.mSvHealth.back().mGpsGoodMask;
                eph_health_bad_mask  = in.mSvHealth.back().mGpsBadMask;
            }
            if (!in.mXtra.empty()) {
                server_perdiction_available_mask = in.mXtra.back().mGpsXtraValid;
                server_perdiction_age = (float)(in.mXtra.back().mGpsXtraAge);
            }
            break;
        case GNSS_SV_TYPE_GLONASS:
            svid_min = GNSS_BUGREPORT_GLO_MIN;
            svid_num = GLO_NUM;
            svid_idx = GPS_NUM;
            if (!in.mSvHealth.empty()) {
                eph_health_good_mask = in.mSvHealth.back().mGloGoodMask;
                eph_health_bad_mask  = in.mSvHealth.back().mGloBadMask;
            }
            if (!in.mXtra.empty()) {
                server_perdiction_available_mask = in.mXtra.back().mGloXtraValid;
                server_perdiction_age = (float)(in.mXtra.back().mGloXtraAge);
            }
            break;
        case GNSS_SV_TYPE_QZSS:
            svid_min = GNSS_BUGREPORT_QZSS_MIN;
            svid_num = QZSS_NUM;
            svid_idx = GPS_NUM+GLO_NUM+BDS_NUM+GAL_NUM;
            if (!in.mSvHealth.empty()) {
                eph_health_good_mask = in.mSvHealth.back().mQzssGoodMask;
                eph_health_bad_mask  = in.mSvHealth.back().mQzssBadMask;
            }
            if (!in.mXtra.empty()) {
                server_perdiction_available_mask = in.mXtra.back().mQzssXtraValid;
                server_perdiction_age = (float)(in.mXtra.back().mQzssXtraAge);
            }
            break;
        case GNSS_SV_TYPE_BEIDOU:
            svid_min = GNSS_BUGREPORT_BDS_MIN;
            svid_num = BDS_NUM;
            svid_idx = GPS_NUM+GLO_NUM;
            if (!in.mSvHealth.empty()) {
                eph_health_good_mask = in.mSvHealth.back().mBdsGoodMask;
                eph_health_bad_mask  = in.mSvHealth.back().mBdsBadMask;
            }
            if (!in.mXtra.empty()) {
                server_perdiction_available_mask = in.mXtra.back().mBdsXtraValid;
                server_perdiction_age = (float)(in.mXtra.back().mBdsXtraAge);
            }
            break;
        case GNSS_SV_TYPE_GALILEO:
            svid_min = GNSS_BUGREPORT_GAL_MIN;
            svid_num = GAL_NUM;
            svid_idx = GPS_NUM+GLO_NUM+BDS_NUM;
            if (!in.mSvHealth.empty()) {
                eph_health_good_mask = in.mSvHealth.back().mGalGoodMask;
                eph_health_bad_mask  = in.mSvHealth.back().mGalBadMask;
            }
            if (!in.mXtra.empty()) {
                server_perdiction_available_mask = in.mXtra.back().mGalXtraValid;
                server_perdiction_age = (float)(in.mXtra.back().mGalXtraAge);
            }
            break;
        case GNSS_SV_TYPE_NAVIC:
            svid_min = GNSS_BUGREPORT_NAVIC_MIN;
            svid_num = NAVIC_NUM;
            svid_idx = GPS_NUM+GLO_NUM+QZSS_NUM+BDS_NUM+GAL_NUM;
            if (!in.mSvHealth.empty()) {
                eph_health_good_mask = in.mSvHealth.back().mNavicGoodMask;
                eph_health_bad_mask  = in.mSvHealth.back().mNavicBadMask;
            }
            if (!in.mXtra.empty()) {
                server_perdiction_available_mask = in.mXtra.back().mNavicXtraValid;
                server_perdiction_age = (float)(in.mXtra.back().mNavicXtraAge);
            }
            break;
        default:
            return;
    }

    // extract each sv info from systemstatus report
    for(uint32_t i=0; i<svid_num && (svid_idx+i)<SV_ALL_NUM; i++) {

        GnssDebugSatelliteInfo s = {};
        s.size = sizeof(s);
        s.svid = i + svid_min;
        s.constellation = in_constellation;

        if (!in.mNavData.empty()) {
            s.mEphemerisType   = in.mNavData.back().mNav[svid_idx+i].mType;
            s.mEphemerisSource = in.mNavData.back().mNav[svid_idx+i].mSource;
        }
        else {
            s.mEphemerisType   = GNSS_EPH_TYPE_UNKNOWN;
            s.mEphemerisSource = GNSS_EPH_SOURCE_UNKNOWN;
        }

        sv_mask = 0x1ULL << i;
        if (eph_health_good_mask & sv_mask) {
            s.mEphemerisHealth = GNSS_EPH_HEALTH_GOOD;
        }
        else if (eph_health_bad_mask & sv_mask) {
            s.mEphemerisHealth = GNSS_EPH_HEALTH_BAD;
        }
        else {
            s.mEphemerisHealth = GNSS_EPH_HEALTH_UNKNOWN;
        }

        if (!in.mNavData.empty()) {
            s.ephemerisAgeSeconds =
                (float)(in.mNavData.back().mNav[svid_idx+i].mAgeSec);
        }
        else {
            s.ephemerisAgeSeconds = 0.0f;
        }

        if (server_perdiction_available_mask & sv_mask) {
            s.serverPredictionIsAvailable = true;
        }
        else {
            s.serverPredictionIsAvailable = false;
        }

        s.serverPredictionAgeSeconds = server_perdiction_age;
        out.push_back(s);
    }

    return;
}

bool GnssAdapter::getDebugReport(GnssDebugReport& r)
{
    LOC_LOGD("%s]: ", __func__);

    SystemStatus* systemstatus = getSystemStatus();
    if (nullptr == systemstatus) {
        return false;
    }

    SystemStatusReports reports = {};
    systemstatus->getReport(reports, true);

    r.size = sizeof(r);

    // location block
    r.mLocation.size = sizeof(r.mLocation);
    if(!reports.mLocation.empty() && reports.mLocation.back().mValid) {
        r.mLocation.mValid = true;
        r.mLocation.mLocation.latitude =
            reports.mLocation.back().mLocation.gpsLocation.latitude;
        r.mLocation.mLocation.longitude =
            reports.mLocation.back().mLocation.gpsLocation.longitude;
        r.mLocation.mLocation.altitude =
            reports.mLocation.back().mLocation.gpsLocation.altitude;
        r.mLocation.mLocation.speed =
            (double)(reports.mLocation.back().mLocation.gpsLocation.speed);
        r.mLocation.mLocation.bearing =
            (double)(reports.mLocation.back().mLocation.gpsLocation.bearing);
        r.mLocation.mLocation.accuracy =
            (double)(reports.mLocation.back().mLocation.gpsLocation.accuracy);

        r.mLocation.verticalAccuracyMeters =
            reports.mLocation.back().mLocationEx.vert_unc;
        r.mLocation.speedAccuracyMetersPerSecond =
            reports.mLocation.back().mLocationEx.speed_unc;
        r.mLocation.bearingAccuracyDegrees =
            reports.mLocation.back().mLocationEx.bearing_unc;

        r.mLocation.mUtcReported =
            reports.mLocation.back().mUtcReported;
    }
    else if(!reports.mBestPosition.empty() && reports.mBestPosition.back().mValid) {
        r.mLocation.mValid = true;
        r.mLocation.mLocation.latitude =
                (double)(reports.mBestPosition.back().mBestLat) * RAD2DEG;
        r.mLocation.mLocation.longitude =
                (double)(reports.mBestPosition.back().mBestLon) * RAD2DEG;
        r.mLocation.mLocation.altitude = reports.mBestPosition.back().mBestAlt;
        r.mLocation.mLocation.accuracy =
                (double)(reports.mBestPosition.back().mBestHepe);

        r.mLocation.mUtcReported = reports.mBestPosition.back().mUtcReported;
    }
    else {
        r.mLocation.mValid = false;
    }

    if (r.mLocation.mValid) {
        LOC_LOGV("getDebugReport - lat=%f lon=%f alt=%f speed=%f",
            r.mLocation.mLocation.latitude,
            r.mLocation.mLocation.longitude,
            r.mLocation.mLocation.altitude,
            r.mLocation.mLocation.speed);
    }

    // time block
    r.mTime.size = sizeof(r.mTime);
    if(!reports.mTimeAndClock.empty() && reports.mTimeAndClock.back().mTimeValid) {
        r.mTime.mValid = true;
        r.mTime.timeEstimate =
            (((int64_t)(reports.mTimeAndClock.back().mGpsWeek)*7 +
                        GNSS_UTC_TIME_OFFSET)*24*60*60 -
              (int64_t)(reports.mTimeAndClock.back().mLeapSeconds))*1000ULL +
              (int64_t)(reports.mTimeAndClock.back().mGpsTowMs);

        if (reports.mTimeAndClock.back().mTimeUncNs > 0) {
            // TimeUncNs value is available
            r.mTime.timeUncertaintyNs =
                    (float)(reports.mTimeAndClock.back().mLeapSecUnc)*1000.0f +
                    (float)(reports.mTimeAndClock.back().mTimeUncNs);
        } else {
            // fall back to legacy TimeUnc
            r.mTime.timeUncertaintyNs =
                    ((float)(reports.mTimeAndClock.back().mTimeUnc) +
                     (float)(reports.mTimeAndClock.back().mLeapSecUnc))*1000.0f;
        }

        r.mTime.frequencyUncertaintyNsPerSec =
            (float)(reports.mTimeAndClock.back().mClockFreqBiasUnc);
        LOC_LOGV("getDebugReport - timeestimate=%" PRIu64 " unc=%f frequnc=%f",
                r.mTime.timeEstimate,
                r.mTime.timeUncertaintyNs, r.mTime.frequencyUncertaintyNsPerSec);
    }
    else {
        r.mTime.mValid = false;
    }

    // satellite info block
    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_GPS, reports);
    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_GLONASS, reports);
    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_QZSS, reports);
    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_BEIDOU, reports);
    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_GALILEO, reports);
    convertSatelliteInfo(r.mSatelliteInfo, GNSS_SV_TYPE_NAVIC, reports);
    LOC_LOGV("getDebugReport - satellite=%zu", r.mSatelliteInfo.size());

    return true;
}

/* get AGC information from system status and fill it */
void
GnssAdapter::getAgcInformation(GnssMeasurementsNotification& measurements, int msInWeek)
{
    SystemStatus* systemstatus = getSystemStatus();

    if (nullptr != systemstatus) {
        SystemStatusReports reports = {};
        systemstatus->getReport(reports, true);

        if ((!reports.mRfAndParams.empty()) && (!reports.mTimeAndClock.empty()) &&
            (abs(msInWeek - (int)reports.mTimeAndClock.back().mGpsTowMs) < 2000)) {

            for (size_t i = 0; i < measurements.count; i++) {
                switch (measurements.measurements[i].svType) {
                case GNSS_SV_TYPE_GPS:
                case GNSS_SV_TYPE_QZSS:
                    measurements.measurements[i].agcLevelDb =
                            reports.mRfAndParams.back().mAgcGps;
                    measurements.measurements[i].flags |=
                            GNSS_MEASUREMENTS_DATA_AUTOMATIC_GAIN_CONTROL_BIT;
                    break;

                case GNSS_SV_TYPE_GALILEO:
                    measurements.measurements[i].agcLevelDb =
                            reports.mRfAndParams.back().mAgcGal;
                    measurements.measurements[i].flags |=
                            GNSS_MEASUREMENTS_DATA_AUTOMATIC_GAIN_CONTROL_BIT;
                    break;

                case GNSS_SV_TYPE_GLONASS:
                    measurements.measurements[i].agcLevelDb =
                            reports.mRfAndParams.back().mAgcGlo;
                    measurements.measurements[i].flags |=
                            GNSS_MEASUREMENTS_DATA_AUTOMATIC_GAIN_CONTROL_BIT;
                    break;

                case GNSS_SV_TYPE_BEIDOU:
                    measurements.measurements[i].agcLevelDb =
                            reports.mRfAndParams.back().mAgcBds;
                    measurements.measurements[i].flags |=
                            GNSS_MEASUREMENTS_DATA_AUTOMATIC_GAIN_CONTROL_BIT;
                    break;

                case GNSS_SV_TYPE_SBAS:
                case GNSS_SV_TYPE_UNKNOWN:
                default:
                    break;
                }
            }
        }
    }
}

/* get Data information from system status and fill it */
void
GnssAdapter::getDataInformation(GnssDataNotification& data, int msInWeek)
{
    SystemStatus* systemstatus = getSystemStatus();

    LOC_LOGV("%s]: msInWeek=%d", __func__, msInWeek);
    if (nullptr != systemstatus) {
        SystemStatusReports reports = {};
        systemstatus->getReport(reports, true);

        if ((!reports.mRfAndParams.empty()) && (!reports.mTimeAndClock.empty()) &&
            (abs(msInWeek - (int)reports.mTimeAndClock.back().mGpsTowMs) < 2000)) {

            for (int sig = GNSS_LOC_SIGNAL_TYPE_GPS_L1CA;
                 sig < GNSS_LOC_MAX_NUMBER_OF_SIGNAL_TYPES; sig++) {
                data.gnssDataMask[sig] = 0;
                data.jammerInd[sig] = 0.0;
                data.agc[sig] = 0.0;
            }
            if (GNSS_INVALID_JAMMER_IND != reports.mRfAndParams.back().mAgcGps) {
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_GPS_L1CA] |=
                        GNSS_LOC_DATA_AGC_BIT;
                data.agc[GNSS_LOC_SIGNAL_TYPE_GPS_L1CA] =
                        reports.mRfAndParams.back().mAgcGps;
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_QZSS_L1CA] |=
                        GNSS_LOC_DATA_AGC_BIT;
                data.agc[GNSS_LOC_SIGNAL_TYPE_QZSS_L1CA] =
                        reports.mRfAndParams.back().mAgcGps;
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_SBAS_L1_CA] |=
                        GNSS_LOC_DATA_AGC_BIT;
                data.agc[GNSS_LOC_SIGNAL_TYPE_SBAS_L1_CA] =
                    reports.mRfAndParams.back().mAgcGps;
            }
            if (GNSS_INVALID_JAMMER_IND != reports.mRfAndParams.back().mJammerGps) {
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_GPS_L1CA] |=
                        GNSS_LOC_DATA_JAMMER_IND_BIT;
                data.jammerInd[GNSS_LOC_SIGNAL_TYPE_GPS_L1CA] =
                        (double)reports.mRfAndParams.back().mJammerGps;
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_QZSS_L1CA] |=
                        GNSS_LOC_DATA_JAMMER_IND_BIT;
                data.jammerInd[GNSS_LOC_SIGNAL_TYPE_QZSS_L1CA] =
                        (double)reports.mRfAndParams.back().mJammerGps;
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_SBAS_L1_CA] |=
                        GNSS_LOC_DATA_JAMMER_IND_BIT;
                data.jammerInd[GNSS_LOC_SIGNAL_TYPE_SBAS_L1_CA] =
                    (double)reports.mRfAndParams.back().mJammerGps;
            }
            if (GNSS_INVALID_JAMMER_IND != reports.mRfAndParams.back().mAgcGlo) {
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_GLONASS_G1] |=
                        GNSS_LOC_DATA_AGC_BIT;
                data.agc[GNSS_LOC_SIGNAL_TYPE_GLONASS_G1] =
                        reports.mRfAndParams.back().mAgcGlo;
            }
            if (GNSS_INVALID_JAMMER_IND != reports.mRfAndParams.back().mJammerGlo) {
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_GLONASS_G1] |=
                        GNSS_LOC_DATA_JAMMER_IND_BIT;
                data.jammerInd[GNSS_LOC_SIGNAL_TYPE_GLONASS_G1] =
                        (double)reports.mRfAndParams.back().mJammerGlo;
            }
            if (GNSS_INVALID_JAMMER_IND != reports.mRfAndParams.back().mAgcBds) {
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_BEIDOU_B1_I] |=
                        GNSS_LOC_DATA_AGC_BIT;
                data.agc[GNSS_LOC_SIGNAL_TYPE_BEIDOU_B1_I] =
                        reports.mRfAndParams.back().mAgcBds;
            }
            if (GNSS_INVALID_JAMMER_IND != reports.mRfAndParams.back().mJammerBds) {
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_BEIDOU_B1_I] |=
                        GNSS_LOC_DATA_JAMMER_IND_BIT;
                data.jammerInd[GNSS_LOC_SIGNAL_TYPE_BEIDOU_B1_I] =
                        (double)reports.mRfAndParams.back().mJammerBds;
            }
            if (GNSS_INVALID_JAMMER_IND != reports.mRfAndParams.back().mAgcGal) {
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_GALILEO_E1_C] |=
                        GNSS_LOC_DATA_AGC_BIT;
                data.agc[GNSS_LOC_SIGNAL_TYPE_GALILEO_E1_C] =
                        reports.mRfAndParams.back().mAgcGal;
            }
            if (GNSS_INVALID_JAMMER_IND != reports.mRfAndParams.back().mJammerGal) {
                data.gnssDataMask[GNSS_LOC_SIGNAL_TYPE_GALILEO_E1_C] |=
                        GNSS_LOC_DATA_JAMMER_IND_BIT;
                data.jammerInd[GNSS_LOC_SIGNAL_TYPE_GALILEO_E1_C] =
                        (double)reports.mRfAndParams.back().mJammerGal;
            }
        }
    }
}

/* Callbacks registered with loc_net_iface library */
static void agpsOpenResultCb (bool isSuccess, AGpsExtType agpsType, const char* apn,
        AGpsBearerType bearerType, void* userDataPtr) {
    LOC_LOGD("%s]: ", __func__);
    if (userDataPtr == nullptr) {
        LOC_LOGE("%s]: userDataPtr is nullptr.", __func__);
        return;
    }
    if (apn == nullptr) {
        LOC_LOGE("%s]: apn is nullptr.", __func__);
        return;
    }
    GnssAdapter* adapter = (GnssAdapter*)userDataPtr;
    if (isSuccess) {
        adapter->dataConnOpenCommand(agpsType, apn, strlen(apn), bearerType);
    } else {
        adapter->dataConnFailedCommand(agpsType);
    }
}

static void agpsCloseResultCb (bool isSuccess, AGpsExtType agpsType, void* userDataPtr) {
    LOC_LOGD("%s]: ", __func__);
    if (userDataPtr == nullptr) {
        LOC_LOGE("%s]: userDataPtr is nullptr.", __func__);
        return;
    }
    GnssAdapter* adapter = (GnssAdapter*)userDataPtr;
    if (isSuccess) {
        adapter->dataConnClosedCommand(agpsType);
    } else {
        adapter->dataConnFailedCommand(agpsType);
    }
}

void
GnssAdapter::saveGnssEnergyConsumedCallback(GnssEnergyConsumedCallback energyConsumedCb) {
    mGnssEnergyConsumedCb = energyConsumedCb;
}

void
GnssAdapter::getGnssEnergyConsumedCommand(GnssEnergyConsumedCallback energyConsumedCb) {
    struct MsgGetGnssEnergyConsumed : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        GnssEnergyConsumedCallback mEnergyConsumedCb;
        inline MsgGetGnssEnergyConsumed(GnssAdapter& adapter, LocApiBase& api,
                                        GnssEnergyConsumedCallback energyConsumedCb) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mEnergyConsumedCb(energyConsumedCb){}
        inline virtual void proc() const {
            mAdapter.saveGnssEnergyConsumedCallback(mEnergyConsumedCb);
            mApi.getGnssEnergyConsumed();
        }
    };

    sendMsg(new MsgGetGnssEnergyConsumed(*this, *mLocApi, energyConsumedCb));
}

void
GnssAdapter::nfwControlCommand(bool enable) {
    struct MsgControlNfwLocationAccess : public LocMsg {
        GnssAdapter& mAdapter;
        LocApiBase& mApi;
        bool mEnable;
        inline MsgControlNfwLocationAccess(GnssAdapter& adapter, LocApiBase& api,
            bool enable) :
            LocMsg(),
            mAdapter(adapter),
            mApi(api),
            mEnable(enable) {}
        inline virtual void proc() const {
            GnssConfigGpsLock gpsLock;

            gpsLock = ContextBase::mGps_conf.GPS_LOCK;
            if (mEnable) {
                gpsLock &= ~GNSS_CONFIG_GPS_LOCK_NI;
            } else {
                gpsLock |= GNSS_CONFIG_GPS_LOCK_NI;
            }
            ContextBase::mGps_conf.GPS_LOCK = gpsLock;
            mApi.sendMsg(new LocApiMsg([&mApi = mApi, gpsLock]() {
                mApi.setGpsLockSync((GnssConfigGpsLock)gpsLock);
            }));
        }
    };

    if (mSupportNfwControl) {
        sendMsg(new MsgControlNfwLocationAccess(*this, *mLocApi, enable));
    } else {
        LOC_LOGw("NFW control is not supported, do not use this for NFW");
    }
}

// Set tunc constrained mode, use 0 session id to indicate
// that no callback is needed. Session id 0 is used for calls that
// are not invoked from the integration api, e.g.: initial configuration
// from the configure file
void
GnssAdapter::setConstrainedTunc(bool enable, float tuncConstraint,
                                uint32_t energyBudget, uint32_t sessionId) {

    mLocConfigInfo.tuncConfigInfo.isValid = true;
    mLocConfigInfo.tuncConfigInfo.enable = enable;
    mLocConfigInfo.tuncConfigInfo.tuncThresholdMs = tuncConstraint;
    mLocConfigInfo.tuncConfigInfo.energyBudget = energyBudget;

    LocApiResponse* locApiResponse = nullptr;
    if (sessionId != 0) {
        locApiResponse =
                new LocApiResponse(*getContext(),
                                   [this, sessionId] (LocationError err) {
                                    reportResponse(err, sessionId);});
        if (!locApiResponse) {
            LOC_LOGe("memory alloc failed");
        }
    }
    mLocApi->setConstrainedTuncMode(
            enable, tuncConstraint, energyBudget, locApiResponse);
}

uint32_t
GnssAdapter::setConstrainedTuncCommand (bool enable, float tuncConstraint,
                                        uint32_t energyBudget) {
    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGd("session id %u", sessionId);

    struct MsgEnableTUNC : public LocMsg {
        GnssAdapter& mAdapter;
        uint32_t mSessionId;
        bool mEnable;
        float mTuncConstraint;
        uint32_t mEnergyBudget;

        inline MsgEnableTUNC(GnssAdapter& adapter,
                             uint32_t sessionId,
                             bool enable,
                             float tuncConstraint,
                             uint32_t energyBudget) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mEnable(enable),
            mTuncConstraint(tuncConstraint),
            mEnergyBudget(energyBudget) {}
        inline virtual void proc() const {
            mAdapter.setConstrainedTunc(mEnable, mTuncConstraint,
                                        mEnergyBudget, mSessionId);
        }
    };

    sendMsg(new MsgEnableTUNC(*this, sessionId, enable,
                              tuncConstraint, energyBudget));

    return sessionId;
}

// Set position assisted clock estimator, use 0 session id to indicate
// that no callback is needed. Session id 0 is used for calls that are
// not invoked from the integration api, e.g.: initial configuration
// from the configure file.
void
GnssAdapter::setPositionAssistedClockEstimator(bool enable,
                                               uint32_t sessionId) {

    mLocConfigInfo.paceConfigInfo.isValid = true;
    mLocConfigInfo.paceConfigInfo.enable = enable;
    LocApiResponse* locApiResponse = nullptr;
    if (sessionId != 0) {
        locApiResponse =
                new LocApiResponse(*getContext(),
                                   [this, sessionId] (LocationError err) {
                                   reportResponse(err, sessionId);});
        if (!locApiResponse) {
            LOC_LOGe("memory alloc failed");
        }
    }
    mLocApi->setPositionAssistedClockEstimatorMode(enable, locApiResponse);
}

uint32_t
GnssAdapter::setPositionAssistedClockEstimatorCommand(bool enable) {
    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGd("session id %u", sessionId);

    struct MsgEnablePACE : public LocMsg {
        GnssAdapter& mAdapter;
        uint32_t mSessionId;
        bool mEnable;
        inline MsgEnablePACE(GnssAdapter& adapter,
                             uint32_t sessionId, bool enable) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mEnable(enable){}
        inline virtual void proc() const {
            mAdapter.setPositionAssistedClockEstimator(mEnable, mSessionId);
        }
    };

    sendMsg(new MsgEnablePACE(*this, sessionId, enable));
    return sessionId;
}

void GnssAdapter::gnssUpdateSvConfig(
        uint32_t sessionId, const GnssSvTypeConfig& constellationEnablementConfig,
        const GnssSvIdConfig&   blacklistSvConfig) {

    // suspend all tracking sessions to apply the constellation config
    suspendSessions();
    if (constellationEnablementConfig.size == sizeof(constellationEnablementConfig)) {
        // check whether if any constellation is removed from the new config
        GnssSvTypesMask currentEnabledMask = mGnssSvTypeConfig.enabledSvTypesMask;
        GnssSvTypesMask newEnabledMask = constellationEnablementConfig.enabledSvTypesMask;
        GnssSvTypesMask enabledRemoved = currentEnabledMask & (currentEnabledMask ^ newEnabledMask);
        // Send reset if any constellation is removed from the enabled list
        if (enabledRemoved != 0) {
            mLocApi->resetConstellationControl();
        }

        // if the constellation config is valid, issue request to modem
        // to enable/disable constellation
        mLocApi->setConstellationControl(mGnssSvTypeConfig);
    } else if (constellationEnablementConfig.size == 0) {
        // when the size is not set, meaning reset to modem default
        mLocApi->resetConstellationControl();
    }
    // save the constellation settings to be used for modem SSR
    mGnssSvTypeConfig = constellationEnablementConfig;

    // handle blacklisted SV settings
    mGnssSvIdConfig   = blacklistSvConfig;
    // process blacklist svs info
    mBlacklistedSvIds.clear();
    // need to save the balcklisted sv info into mBlacklistedSvIds as well
    convertFromGnssSvIdConfig(blacklistSvConfig, mBlacklistedSvIds);
    LocApiResponse* locApiResponse = new LocApiResponse(*getContext(),
            [this, sessionId] (LocationError err) {
            reportResponse(err, sessionId);});
    if (!locApiResponse) {
        LOC_LOGe("memory alloc failed");
    }
    mLocApi->setBlacklistSv(mGnssSvIdConfig, locApiResponse);

    // resume all tracking sessions after the constellation config has been applied
    restartSessions(false);
}

uint32_t
GnssAdapter::gnssUpdateSvConfigCommand(
        const GnssSvTypeConfig& constellationEnablementConfig,
        const GnssSvIdConfig& blacklistSvConfig) {

    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGd("session id %u", sessionId);

    struct MsgUpdateSvConfig : public LocMsg {
        GnssAdapter&     mAdapter;
        uint32_t         mSessionId;
        GnssSvTypeConfig mConstellationEnablementConfig;
        GnssSvIdConfig   mBlacklistSvIdConfig;

        inline MsgUpdateSvConfig(GnssAdapter& adapter,
                                 uint32_t sessionId,
                                 const GnssSvTypeConfig& constellationEnablementConfig,
                                 const GnssSvIdConfig& blacklistSvConfig) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mConstellationEnablementConfig(constellationEnablementConfig),
            mBlacklistSvIdConfig(blacklistSvConfig) {}
        inline virtual void proc() const {
            mAdapter.gnssUpdateSvConfig(mSessionId, mConstellationEnablementConfig,
                                        mBlacklistSvIdConfig);
        }
    };

    if (sessionId != 0) {
        sendMsg(new MsgUpdateSvConfig(*this, sessionId, constellationEnablementConfig,
                                      blacklistSvConfig));
    }
    return sessionId;
}

void GnssAdapter::gnssUpdateSecondaryBandConfig(
        uint32_t sessionId, const GnssSvTypeConfig& secondaryBandConfig) {

    LocApiResponse* locApiResponse = new LocApiResponse(*getContext(),
            [this, sessionId] (LocationError err) {
            reportResponse(err, sessionId);});
    if (!locApiResponse) {
        LOC_LOGe("memory alloc failed");
    }

    // handle secondary band info
    mGnssSeconaryBandConfig = secondaryBandConfig;
    gnssSecondaryBandConfigUpdate(locApiResponse);
}

uint32_t
GnssAdapter::gnssUpdateSecondaryBandConfigCommand(
        const GnssSvTypeConfig& secondaryBandConfig) {

    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGd("session id %u", sessionId);

    struct MsgUpdateSecondaryBandConfig : public LocMsg {
        GnssAdapter&     mAdapter;
        uint32_t         mSessionId;
        GnssSvTypeConfig mSecondaryBandConfig;

        inline MsgUpdateSecondaryBandConfig(GnssAdapter& adapter,
                                 uint32_t sessionId,
                                 const GnssSvTypeConfig& secondaryBandConfig) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mSecondaryBandConfig(secondaryBandConfig) {}
        inline virtual void proc() const {
            mAdapter.gnssUpdateSecondaryBandConfig(mSessionId,  mSecondaryBandConfig);
        }
    };

    if (sessionId != 0) {
        sendMsg(new MsgUpdateSecondaryBandConfig(*this, sessionId, secondaryBandConfig));
    }
    return sessionId;
}

// This function currently retrieves secondary band configuration
// for constellation enablement/disablement.
void
GnssAdapter::gnssGetSecondaryBandConfig(uint32_t sessionId) {

    LocApiResponse* locApiResponse = new LocApiResponse(*getContext(),
            [this, sessionId] (LocationError err) {
            reportResponse(err, sessionId);});
    if (!locApiResponse) {
        LOC_LOGe("memory alloc failed");
    }

    mLocApi->getConstellationMultiBandConfig(sessionId, locApiResponse);
}

uint32_t
GnssAdapter::gnssGetSecondaryBandConfigCommand() {

    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGd("session id %u", sessionId);

    struct MsgGetSecondaryBandConfig : public LocMsg {
        GnssAdapter& mAdapter;
        uint32_t     mSessionId;
        inline MsgGetSecondaryBandConfig(GnssAdapter& adapter,
                              uint32_t sessionId) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId) {}
        inline virtual void proc() const {
            mAdapter.gnssGetSecondaryBandConfig(mSessionId);
        }
    };

    if (sessionId != 0) {
        sendMsg(new MsgGetSecondaryBandConfig(*this, sessionId));
    }
    return sessionId;
}

void
GnssAdapter::configLeverArm(uint32_t sessionId,
                            const LeverArmConfigInfo& configInfo) {

    LocationError err = LOCATION_ERROR_NOT_SUPPORTED;
    if (true == mEngHubProxy->configLeverArm(configInfo)) {
        err = LOCATION_ERROR_SUCCESS;
    }
    reportResponse(err, sessionId);
}

uint32_t
GnssAdapter::configLeverArmCommand(const LeverArmConfigInfo& configInfo) {

    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGd("session id %u", sessionId);

    struct MsgConfigLeverArm : public LocMsg {
        GnssAdapter&       mAdapter;
        uint32_t           mSessionId;
        LeverArmConfigInfo mConfigInfo;

        inline MsgConfigLeverArm(GnssAdapter& adapter,
                                 uint32_t sessionId,
                                 const LeverArmConfigInfo& configInfo) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mConfigInfo(configInfo) {}
        inline virtual void proc() const {
            // save the lever ARM config info for translating position from GNSS antenna based
            // to VRP based
            if (mConfigInfo.leverArmValidMask & LEVER_ARM_TYPE_GNSS_TO_VRP_BIT) {
                mAdapter.mLocConfigInfo.leverArmConfigInfo.leverArmValidMask |=
                        LEVER_ARM_TYPE_GNSS_TO_VRP_BIT;
                mAdapter.mLocConfigInfo.leverArmConfigInfo.gnssToVRP = mConfigInfo.gnssToVRP;
            }
            mAdapter.configLeverArm(mSessionId, mConfigInfo);
        }
    };

    sendMsg(new MsgConfigLeverArm(*this, sessionId, configInfo));
    return sessionId;
}

bool GnssAdapter::initMeasCorr(bool bSendCbWhenNotSupported) {
    LOC_LOGv("GnssAdapter::initMeasCorr");
    /* Message to initialize Measurement Corrections */
    struct MsgInitMeasCorr : public LocMsg {
        GnssAdapter& mAdapter;
        GnssMeasurementCorrectionsCapabilitiesMask mCapMask;

        inline MsgInitMeasCorr(GnssAdapter& adapter,
                GnssMeasurementCorrectionsCapabilitiesMask capMask) :
            LocMsg(), mAdapter(adapter), mCapMask(capMask) {
            LOC_LOGv("MsgInitMeasCorr");
        }

        inline virtual void proc() const {
            LOC_LOGv("MsgInitMeasCorr::proc()");

            mAdapter.mMeasCorrSetCapabilitiesCb(mCapMask);
        }
    };
    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_MEASUREMENTS_CORRECTION)) {
        sendMsg(new MsgInitMeasCorr(*this, GNSS_MEAS_CORR_LOS_SATS |
                GNSS_MEAS_CORR_EXCESS_PATH_LENGTH | GNSS_MEAS_CORR_REFLECTING_PLANE));
        return true;
    } else {
        LOC_LOGv("MEASUREMENTS_CORRECTION feature is not supported in the modem");
        if (bSendCbWhenNotSupported) {
            sendMsg(new MsgInitMeasCorr(*this, 0));
        }
        return false;
    }
}

bool GnssAdapter::openMeasCorrCommand(const measCorrSetCapabilitiesCb setCapabilitiesCb) {
    LOC_LOGi("GnssAdapter::openMeasCorrCommand");

    /* Send message to initialize Measurement Corrections */
        mMeasCorrSetCapabilitiesCb = setCapabilitiesCb;
        mIsMeasCorrInterfaceOpen = true;
        if (isEngineCapabilitiesKnown()) {
        LOC_LOGv("Capabilities are known, proceed with measurement corrections init");
            return initMeasCorr(false);
        } else {
        LOC_LOGv("Capabilities are not known, wait for open");
            return true;
        }
}

bool GnssAdapter::measCorrSetCorrectionsCommand(const GnssMeasurementCorrections gnssMeasCorr) {
    LOC_LOGi("GnssAdapter::measCorrSetCorrectionsCommand");

    /* Message to set Measurement Corrections */
    struct MsgSetCorrectionsMeasCorr : public LocMsg {
        const GnssMeasurementCorrections mGnssMeasCorr;
        GnssAdapter& mAdapter;
        LocApiBase& mApi;

        inline MsgSetCorrectionsMeasCorr(
            const GnssMeasurementCorrections gnssMeasCorr,
            GnssAdapter& adapter,
            LocApiBase& api) :
            LocMsg(),
            mGnssMeasCorr(gnssMeasCorr),
            mAdapter(adapter),
            mApi(api) {
            LOC_LOGv("MsgSetCorrectionsMeasCorr");
        }

        inline virtual void proc() const {
            LOC_LOGv("MsgSetCorrectionsMeasCorr::proc()");
            mApi.setMeasurementCorrections(mGnssMeasCorr);
        }
    };

    if (ContextBase::isFeatureSupported(LOC_SUPPORTED_FEATURE_MEASUREMENTS_CORRECTION)) {
        sendMsg(new MsgSetCorrectionsMeasCorr(gnssMeasCorr, *this, *mLocApi));
        return true;
    } else {
        LOC_LOGw("Measurement Corrections are not supported!");
        return false;
    }
}
uint32_t GnssAdapter::antennaInfoInitCommand(const antennaInfoCb antennaInfoCallback) {
    LOC_LOGi("GnssAdapter::antennaInfoInitCommand");

    /* Message to initialize Antenna Information */
    struct MsgInitAi : public LocMsg {
        const antennaInfoCb mAntennaInfoCb;
        GnssAdapter& mAdapter;

        inline MsgInitAi(const antennaInfoCb antennaInfoCallback, GnssAdapter& adapter) :
            LocMsg(), mAntennaInfoCb(antennaInfoCallback), mAdapter(adapter) {
            LOC_LOGv("MsgInitAi");
        }

        inline virtual void proc() const {
            LOC_LOGv("MsgInitAi::proc()");
            mAdapter.reportGnssAntennaInformation(mAntennaInfoCb);
        }
    };
    if (mIsAntennaInfoInterfaceOpened) {
        return ANTENNA_INFO_ERROR_ALREADY_INIT;
    } else {
        mIsAntennaInfoInterfaceOpened = true;
        sendMsg(new MsgInitAi(antennaInfoCallback, *this));
        return ANTENNA_INFO_SUCCESS;
    }
}

void
GnssAdapter::configRobustLocation(uint32_t sessionId,
                                  bool enable, bool enableForE911) {

    mLocConfigInfo.robustLocationConfigInfo.isValid = true;
    mLocConfigInfo.robustLocationConfigInfo.enable = enable;
    mLocConfigInfo.robustLocationConfigInfo.enableFor911 = enableForE911;

    LocApiResponse* locApiResponse = nullptr;
    if (sessionId != 0) {
        locApiResponse =
                new LocApiResponse(*getContext(),
                                   [this, sessionId] (LocationError err) {
                                   reportResponse(err, sessionId);});
        if (!locApiResponse) {
            LOC_LOGe("memory alloc failed");
        }
    }
    mLocApi->configRobustLocation(enable, enableForE911, locApiResponse);
}

uint32_t GnssAdapter::configRobustLocationCommand(
        bool enable, bool enableForE911) {

    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGd("session id %u", sessionId);

    struct MsgConfigRobustLocation : public LocMsg {
        GnssAdapter&     mAdapter;
        uint32_t         mSessionId;
        bool             mEnable;
        bool             mEnableForE911;

        inline MsgConfigRobustLocation(GnssAdapter& adapter,
                                uint32_t sessionId,
                                bool     enable,
                                bool     enableForE911) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mEnable(enable),
            mEnableForE911(enableForE911) {}
        inline virtual void proc() const {
            mAdapter.configRobustLocation(mSessionId, mEnable, mEnableForE911);
        }
    };

    sendMsg(new MsgConfigRobustLocation(*this, sessionId, enable, enableForE911));
    return sessionId;
}

void
GnssAdapter::configMinGpsWeek(uint32_t sessionId, uint16_t minGpsWeek) {
    // suspend all sessions for modem to take the min GPS week config
    suspendSessions();

    LocApiResponse* locApiResponse = nullptr;
    if (sessionId != 0) {
        locApiResponse =
                new LocApiResponse(*getContext(),
                                   [this, sessionId] (LocationError err) {
                                   reportResponse(err, sessionId);});
        if (!locApiResponse) {
            LOC_LOGe("memory alloc failed");
        }
    }
    mLocApi->configMinGpsWeek(minGpsWeek, locApiResponse);

    // resume all tracking sessions after the min GPS week config
    // has been changed
    restartSessions(false);
}

uint32_t GnssAdapter::configMinGpsWeekCommand(uint16_t minGpsWeek) {
    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGd("session id %u", sessionId);

    struct MsgConfigMinGpsWeek : public LocMsg {
        GnssAdapter&     mAdapter;
        uint32_t         mSessionId;
        uint16_t         mMinGpsWeek;

        inline MsgConfigMinGpsWeek(GnssAdapter& adapter,
                                   uint32_t sessionId,
                                   uint16_t minGpsWeek) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mMinGpsWeek(minGpsWeek) {}
        inline virtual void proc() const {
            mAdapter.configMinGpsWeek(mSessionId, mMinGpsWeek);
        }
    };

    sendMsg(new MsgConfigMinGpsWeek(*this, sessionId, minGpsWeek));
    return sessionId;
}

uint32_t GnssAdapter::configDeadReckoningEngineParamsCommand(
        const DeadReckoningEngineConfig& dreConfig) {

    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGd("session id %u", sessionId);

    struct MsgConfigDrEngine : public LocMsg {
        GnssAdapter& mAdapter;
        uint32_t     mSessionId;
        DeadReckoningEngineConfig mDreConfig;

        inline MsgConfigDrEngine(GnssAdapter& adapter,
                                  uint32_t sessionId,
                                  const DeadReckoningEngineConfig& dreConfig) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mDreConfig(dreConfig) {}
        inline virtual void proc() const {
            LocationError err = LOCATION_ERROR_NOT_SUPPORTED;
            if (true == mAdapter.mEngHubProxy->configDeadReckoningEngineParams(mDreConfig)) {
                err = LOCATION_ERROR_SUCCESS;
            }
            mAdapter.reportResponse(err, mSessionId);
        }
    };

    sendMsg(new MsgConfigDrEngine(*this, sessionId, dreConfig));
    return sessionId;
}

uint32_t GnssAdapter::configEngineRunStateCommand(
        PositioningEngineMask engType, LocEngineRunState engState) {

    // generated session id will be none-zero
    uint32_t sessionId = generateSessionId();
    LOC_LOGe("session id %u, eng type 0x%x, eng state %d, dre enabled %d",
             sessionId, engType, engState, mDreIntEnabled);

    struct MsgConfigEngineRunState : public LocMsg {
        GnssAdapter& mAdapter;
        uint32_t     mSessionId;
        PositioningEngineMask mEngType;
        LocEngineRunState mEngState;

        inline MsgConfigEngineRunState(GnssAdapter& adapter,
                                       uint32_t sessionId,
                                       PositioningEngineMask engType,
                                       LocEngineRunState engState) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mEngType(engType),
            mEngState(engState) {}
        inline virtual void proc() const {
            LocationError err = LOCATION_ERROR_NOT_SUPPORTED;
            // Currently, only DR engine supports pause/resume request
            if ((mEngType == DEAD_RECKONING_ENGINE) &&
                (mAdapter.mDreIntEnabled == true)) {
                if (true == mAdapter.mEngHubProxy->configEngineRunState(mEngType, mEngState)) {
                    err = LOCATION_ERROR_SUCCESS;
                }
            }
            mAdapter.reportResponse(err, mSessionId);
        }
    };

    sendMsg(new MsgConfigEngineRunState(*this, sessionId, engType, engState));

    return sessionId;
}

void GnssAdapter::reportGnssConfigEvent(uint32_t sessionId, const GnssConfig& gnssConfig)
{
    struct MsgReportGnssConfig : public LocMsg {
        GnssAdapter& mAdapter;
        uint32_t     mSessionId;
        mutable GnssConfig   mGnssConfig;
        inline MsgReportGnssConfig(GnssAdapter& adapter,
                                   uint32_t sessionId,
                                   const GnssConfig& gnssConfig) :
            LocMsg(),
            mAdapter(adapter),
            mSessionId(sessionId),
            mGnssConfig(gnssConfig) {}
        inline virtual void proc() const {
            // Invoke control clients config callback
            if (nullptr != mAdapter.mControlCallbacks.gnssConfigCb) {
                mAdapter.mControlCallbacks.gnssConfigCb(mSessionId, mGnssConfig);
            } else {
                LOC_LOGe("Failed to report, callback not registered");
            }
        }
    };

    sendMsg(new MsgReportGnssConfig(*this, sessionId, gnssConfig));
}

/* ==== Eng Hub Proxy ================================================================= */
/* ======== UTILITIES ================================================================= */
void
GnssAdapter::initEngHubProxyCommand() {
    LOC_LOGD("%s]: ", __func__);

    struct MsgInitEngHubProxy : public LocMsg {
        GnssAdapter* mAdapter;
        inline MsgInitEngHubProxy(GnssAdapter* adapter) :
            LocMsg(),
            mAdapter(adapter) {}
        inline virtual void proc() const {
            mAdapter->initEngHubProxy();
        }
    };

    sendMsg(new MsgInitEngHubProxy(this));
}

bool
GnssAdapter::initEngHubProxy() {
    static bool firstTime = true;
    static bool engHubLoadSuccessful = false;

    const char *error = nullptr;
    unsigned int processListLength = 0;
    loc_process_info_s_type* processInfoList = nullptr;

    do {
        // load eng hub only once
        if (firstTime == false) {
            break;
        }

        int rc = loc_read_process_conf(LOC_PATH_IZAT_CONF, &processListLength,
                                       &processInfoList);
        if (rc != 0) {
            LOC_LOGE("%s]: failed to parse conf file", __func__);
            break;
        }

        bool pluginDaemonEnabled = false;
        // go over the conf table to see whether any plugin daemon is enabled
        for (unsigned int i = 0; i < processListLength; i++) {
            if ((strncmp(processInfoList[i].name[0], PROCESS_NAME_ENGINE_SERVICE,
                         strlen(PROCESS_NAME_ENGINE_SERVICE)) == 0) &&
                (processInfoList[i].proc_status == ENABLED)) {
                pluginDaemonEnabled = true;
                // check if this is DRE-INT engine
                if ((processInfoList[i].args[1]!= nullptr) &&
                    (strncmp(processInfoList[i].args[1], "DRE-INT", sizeof("DRE-INT")) == 0)) {
                    mDreIntEnabled = true;
                    break;
                }
            }
        }

        // no plugin daemon is enabled for this platform,
        // check if external engine is present for which we need
        // libloc_eng_hub.so to be loaded
        if (pluginDaemonEnabled == false) {
            UTIL_READ_CONF(LOC_PATH_IZAT_CONF, izatConfParamTable);
            if (!loadEngHubForExternalEngine) {
                break;
            }
        }

        // load the engine hub .so, if the .so is not present
        // all EngHubProxyBase calls will turn into no-op.
        void *handle = nullptr;
        if ((handle = dlopen("libloc_eng_hub.so", RTLD_NOW)) == nullptr) {
            if ((error = dlerror()) != nullptr) {
                LOC_LOGE("%s]: libloc_eng_hub.so not found %s !", __func__, error);
            }
            break;
        }

        // prepare the callback functions
        // callback function for engine hub to report back position event
        GnssAdapterReportEnginePositionsEventCb reportPositionEventCb =
            [this](int count, EngineLocationInfo* locationArr) {
                    // report from engine hub on behalf of PPE will be treated as fromUlp
                    reportEnginePositionsEvent(count, locationArr);
            };

        // callback function for engine hub to report back sv event
        GnssAdapterReportSvEventCb reportSvEventCb =
            [this](const GnssSvNotification& svNotify, bool fromEngineHub) {
                   reportSvEvent(svNotify, fromEngineHub);
            };

        // callback function for engine hub to request for complete aiding data
        GnssAdapterReqAidingDataCb reqAidingDataCb =
            [this] (const GnssAidingDataSvMask& svDataMask) {
            mLocApi->requestForAidingData(svDataMask);
        };

        GnssAdapterUpdateNHzRequirementCb updateNHzRequirementCb =
            [this] (bool nHzNeeded, bool nHzMeasNeeded) {

            if (nHzMeasNeeded &&
                    (!checkMask(LOC_API_ADAPTER_BIT_GNSS_NHZ_MEASUREMENT))) {
                updateEvtMask(LOC_API_ADAPTER_BIT_GNSS_NHZ_MEASUREMENT,
                    LOC_REGISTRATION_MASK_ENABLED);
            } else if (checkMask(LOC_API_ADAPTER_BIT_GNSS_NHZ_MEASUREMENT)) {
                updateEvtMask(LOC_API_ADAPTER_BIT_GNSS_NHZ_MEASUREMENT,
                    LOC_REGISTRATION_MASK_DISABLED);
            }

            if (mNHzNeeded != nHzNeeded) {
                mNHzNeeded = nHzNeeded;
                checkAndRestartSPESession();
            }
        };

        GnssAdapterUpdateQwesFeatureStatusCb updateQwesFeatureStatusCb =
            [this] (const std::unordered_map<LocationQwesFeatureType, bool> &featureMap) {
            reportQwesCapabilities(featureMap);
        };

        getEngHubProxyFn* getter = (getEngHubProxyFn*) dlsym(handle, "getEngHubProxy");
        if(getter != nullptr) {
            EngineHubProxyBase* hubProxy = (*getter) (mMsgTask, mSystemStatus->getOsObserver(),
                      reportPositionEventCb,
                      reportSvEventCb, reqAidingDataCb,
                      updateNHzRequirementCb,
                      updateQwesFeatureStatusCb);
            if (hubProxy != nullptr) {
                mEngHubProxy = hubProxy;
                engHubLoadSuccessful = true;
            }
        }
        else {
            LOC_LOGD("%s]: entered, did not find function", __func__);
        }

        LOC_LOGD("%s]: first time initialization %d, returned %d",
                 __func__, firstTime, engHubLoadSuccessful);

    } while (0);

    if (processInfoList != nullptr) {
        free (processInfoList);
        processInfoList = nullptr;
    }

    firstTime = false;
    return engHubLoadSuccessful;
}

std::vector<double>
GnssAdapter::parseDoublesString(char* dString) {
    std::vector<double> dVector;
    char* tmp = NULL;
    char* substr;

    dVector.clear();
    for (substr = strtok_r(dString, " ", &tmp);
        substr != NULL;
        substr = strtok_r(NULL, " ", &tmp)) {
        dVector.push_back(std::stod(substr));
    }
    return dVector;
}

void
GnssAdapter::reportGnssAntennaInformation(const antennaInfoCb antennaInfoCallback)
{
#define MAX_TEXT_WIDTH      50
#define MAX_COLUMN_WIDTH    20

    /* parse antenna_corrections file and fill in
    a vector of GnssAntennaInformation data structure */

    std::vector<GnssAntennaInformation> gnssAntennaInformations;
    GnssAntennaInformation gnssAntennaInfo;

    uint32_t antennaInfoVectorSize;
    loc_param_s_type ant_info_vector_table[] =
    {
        { "ANTENNA_INFO_VECTOR_SIZE", &antennaInfoVectorSize, NULL, 'n' }
    };
    UTIL_READ_CONF(LOC_PATH_ANT_CORR, ant_info_vector_table);

    for (uint32_t i = 0; i < antennaInfoVectorSize; i++) {
        double carrierFrequencyMHz;
        char pcOffsetStr[LOC_MAX_PARAM_STRING];
        uint32_t numberOfRows = 0;
        uint32_t numberOfColumns = 0;
        uint32_t numberOfRowsSGC = 0;
        uint32_t numberOfColumnsSGC = 0;

        gnssAntennaInfo.phaseCenterVariationCorrectionMillimeters.clear();
        gnssAntennaInfo.phaseCenterVariationCorrectionUncertaintyMillimeters.clear();
        gnssAntennaInfo.signalGainCorrectionDbi.clear();
        gnssAntennaInfo.signalGainCorrectionUncertaintyDbi.clear();
        string s1 = "CARRIER_FREQUENCY_";
        s1 += to_string(i);
        string s2 = "PC_OFFSET_";
        s2 += to_string(i);
        string s3 = "NUMBER_OF_ROWS_";
        s3 += to_string(i);
        string s4 = "NUMBER_OF_COLUMNS_";
        s4 += to_string(i);
        string s5 = "NUMBER_OF_ROWS_SGC_";
        s5 += to_string(i);
        string s6 = "NUMBER_OF_COLUMNS_SGC_";
        s6 += to_string(i);

        gnssAntennaInfo.size = sizeof(gnssAntennaInfo);
        loc_param_s_type ant_cf_table[] =
        {
            { s1.c_str(), &carrierFrequencyMHz, NULL, 'f' },
            { s2.c_str(), &pcOffsetStr, NULL, 's' },
            { s3.c_str(), &numberOfRows, NULL, 'n' },
            { s4.c_str(), &numberOfColumns, NULL, 'n' },
            { s5.c_str(), &numberOfRowsSGC, NULL, 'n' },
            { s6.c_str(), &numberOfColumnsSGC, NULL, 'n' },
        };
        UTIL_READ_CONF(LOC_PATH_ANT_CORR, ant_cf_table);

        if (0 == numberOfRowsSGC) {
            numberOfRowsSGC = numberOfRows;
        }
        if (0 == numberOfColumnsSGC) {
            numberOfColumnsSGC = numberOfColumns;
        }

        gnssAntennaInfo.carrierFrequencyMHz = carrierFrequencyMHz;

        // now parse pcOffsetStr to get each entry
        std::vector<double> pcOffset;
        pcOffset = parseDoublesString(pcOffsetStr);
        gnssAntennaInfo.phaseCenterOffsetCoordinateMillimeters.size =
                sizeof(gnssAntennaInfo.phaseCenterOffsetCoordinateMillimeters);
        gnssAntennaInfo.phaseCenterOffsetCoordinateMillimeters.x = pcOffset[0];
        gnssAntennaInfo.phaseCenterOffsetCoordinateMillimeters.xUncertainty = pcOffset[1];
        gnssAntennaInfo.phaseCenterOffsetCoordinateMillimeters.y = pcOffset[2];
        gnssAntennaInfo.phaseCenterOffsetCoordinateMillimeters.yUncertainty = pcOffset[3];
        gnssAntennaInfo.phaseCenterOffsetCoordinateMillimeters.z = pcOffset[4];
        gnssAntennaInfo.phaseCenterOffsetCoordinateMillimeters.zUncertainty = pcOffset[5];

        uint16_t array_size = MAX_TEXT_WIDTH + MAX_COLUMN_WIDTH*numberOfColumns;
        uint16_t array_size_SGC = MAX_TEXT_WIDTH + MAX_COLUMN_WIDTH*numberOfColumnsSGC;
        for (uint32_t j = 0; j < numberOfRows; j++) {
            char pcVarCorrStr[array_size];
            char pcVarCorrUncStr[array_size];

            string s1 = "PC_VARIATION_CORRECTION_" + to_string(i) + "_ROW_";
            s1 += to_string(j);
            string s2 = "PC_VARIATION_CORRECTION_UNC_" + to_string(i) + "_ROW_";
            s2 += to_string(j);

            loc_param_s_type ant_row_table[] =
            {
                { s1.c_str(), &pcVarCorrStr, NULL, 's' },
                { s2.c_str(), &pcVarCorrUncStr, NULL, 's' },
            };
            UTIL_READ_CONF_LONG(LOC_PATH_ANT_CORR, ant_row_table, array_size);

            gnssAntennaInfo.phaseCenterVariationCorrectionMillimeters.push_back(
                    parseDoublesString(pcVarCorrStr));
            gnssAntennaInfo.phaseCenterVariationCorrectionUncertaintyMillimeters.push_back(
                    parseDoublesString(pcVarCorrUncStr));
        }
        for (uint32_t j = 0; j < numberOfRowsSGC; j++) {
            char sigGainCorrStr[array_size_SGC];
            char sigGainCorrUncStr[array_size_SGC];

            string s3 = "SIGNAL_GAIN_CORRECTION_" + to_string(i) + "_ROW_";
            s3 += to_string(j);
            string s4 = "SIGNAL_GAIN_CORRECTION_UNC_" + to_string(i) + "_ROW_";
            s4 += to_string(j);

            loc_param_s_type ant_row_table[] =
            {
                { s3.c_str(), &sigGainCorrStr, NULL, 's' },
                { s4.c_str(), &sigGainCorrUncStr, NULL, 's' },
            };
            UTIL_READ_CONF_LONG(LOC_PATH_ANT_CORR, ant_row_table, array_size_SGC);

            gnssAntennaInfo.signalGainCorrectionDbi.push_back(
                    parseDoublesString(sigGainCorrStr));
            gnssAntennaInfo.signalGainCorrectionUncertaintyDbi.push_back(
                    parseDoublesString(sigGainCorrUncStr));
        }
        gnssAntennaInformations.push_back(std::move(gnssAntennaInfo));
    }
    antennaInfoCallback(gnssAntennaInformations);
}

/* ==== DGnss Usable Reporter ========================================================= */
/* ======== UTILITIES ================================================================= */

void GnssAdapter::initCDFWService()
{
    LOC_LOGv("mCdfwInterface %p", mCdfwInterface);
    if (nullptr == mCdfwInterface) {
        void* libHandle = nullptr;
        const char* libName = "libcdfw.so";

        libHandle = nullptr;
        getCdfwInterface getter  = (getCdfwInterface)dlGetSymFromLib(libHandle,
                          libName, "getQCdfwInterface");
        if (nullptr == getter) {
            LOC_LOGe("dlGetSymFromLib getQCdfwInterface failed");
        } else {
            mCdfwInterface = getter();
        }

        if (nullptr != mCdfwInterface) {
            QDgnssSessionActiveCb qDgnssSessionActiveCb = [this] (bool sessionActive) {
                mDGnssNeedReport = sessionActive;
            };
            mCdfwInterface->startDgnssApiService(*mMsgTask);
            mQDgnssListenerHDL = mCdfwInterface->createUsableReporter(qDgnssSessionActiveCb);
        }
    }
}

/*==== DGnss Ntrip Source ==========================================================*/
void GnssAdapter::enablePPENtripStreamCommand(const GnssNtripConnectionParams& params,
                                              bool enableRTKEngine) {

    (void)enableRTKEngine; //future parameter, not used

    struct enableNtripMsg : public LocMsg {
        GnssAdapter& mAdapter;
        const GnssNtripConnectionParams& mParams;

        inline enableNtripMsg(GnssAdapter& adapter,
                const GnssNtripConnectionParams& params) :
            LocMsg(),
            mAdapter(adapter),
            mParams(std::move(params)) {}
        inline virtual void proc() const {
            mAdapter.handleEnablePPENtrip(mParams);
        }
    };
    sendMsg(new enableNtripMsg(*this, params));
}

void GnssAdapter::handleEnablePPENtrip(const GnssNtripConnectionParams& params) {
    LOC_LOGd("%d %s %d %s %s %s %d mSendNmeaConsent %d",
             params.useSSL, params.hostNameOrIp.data(), params.port,
             params.mountPoint.data(), params.username.data(), params.password.data(),
             params.requiresNmeaLocation, mSendNmeaConsent);

    GnssNtripConnectionParams* pNtripParams = &(mStartDgnssNtripParams.ntripParams);

    if (pNtripParams->useSSL == params.useSSL &&
            0 == pNtripParams->hostNameOrIp.compare(params.hostNameOrIp) &&
            pNtripParams->port == params.port &&
            0 == pNtripParams->mountPoint.compare(params.mountPoint) &&
            0 == pNtripParams->username.compare(params.username) &&
            0 == pNtripParams->password.compare(params.password) &&
            pNtripParams->requiresNmeaLocation == params.requiresNmeaLocation &&
            mDgnssState & DGNSS_STATE_ENABLE_NTRIP_COMMAND) {
        LOC_LOGd("received same Ntrip param");
        return;
    }

    mDgnssState |= DGNSS_STATE_ENABLE_NTRIP_COMMAND;
    mDgnssState |= DGNSS_STATE_NO_NMEA_PENDING;
    mDgnssState &= ~DGNSS_STATE_NTRIP_SESSION_STARTED;

    mStartDgnssNtripParams.ntripParams = std::move(params);
    mStartDgnssNtripParams.nmea.clear();
    if (mSendNmeaConsent && pNtripParams->requiresNmeaLocation) {
        mDgnssState &= ~DGNSS_STATE_NO_NMEA_PENDING;
        mDgnssLastNmeaBootTimeMilli = 0;
        return;
    }

    checkUpdateDgnssNtrip(false);
}

void GnssAdapter::disablePPENtripStreamCommand() {
    struct disableNtripMsg : public LocMsg {
        GnssAdapter& mAdapter;

        inline disableNtripMsg(GnssAdapter& adapter) :
            LocMsg(),
            mAdapter(adapter) {}
        inline virtual void proc() const {
            mAdapter.handleDisablePPENtrip();
        }
    };
    sendMsg(new disableNtripMsg(*this));
}

void GnssAdapter::handleDisablePPENtrip() {
    mDgnssState &= ~DGNSS_STATE_ENABLE_NTRIP_COMMAND;
    mDgnssState |= DGNSS_STATE_NO_NMEA_PENDING;
    stopDgnssNtrip();
}

void GnssAdapter::checkUpdateDgnssNtrip(bool isLocationValid) {
    LOC_LOGd("isInSession %d mDgnssState 0x%x isLocationValid %d",
            isInSession(), mDgnssState, isLocationValid);
    if (isInSession()) {
        uint64_t curBootTime = getBootTimeMilliSec();
        if (mDgnssState == (DGNSS_STATE_ENABLE_NTRIP_COMMAND | DGNSS_STATE_NO_NMEA_PENDING)) {
            mDgnssState |= DGNSS_STATE_NTRIP_SESSION_STARTED;
            mXtraObserver.startDgnssSource(mStartDgnssNtripParams);
            if (isDgnssNmeaRequired()) {
                mDgnssLastNmeaBootTimeMilli = curBootTime;
            }
        } else if ((mDgnssState & DGNSS_STATE_NTRIP_SESSION_STARTED) && isLocationValid &&
            isDgnssNmeaRequired() &&
            curBootTime - mDgnssLastNmeaBootTimeMilli > DGNSS_RANGE_UPDATE_TIME_10MIN_IN_MILLI ) {
            mXtraObserver.updateNmeaToDgnssServer(mStartDgnssNtripParams.nmea);
            mDgnssLastNmeaBootTimeMilli = curBootTime;
        }
    }
}

void GnssAdapter::stopDgnssNtrip() {
    LOC_LOGd("isInSession %d mDgnssState 0x%x", isInSession(), mDgnssState);
    mStartDgnssNtripParams.nmea.clear();
    if (mDgnssState & DGNSS_STATE_NTRIP_SESSION_STARTED) {
        mDgnssState &= ~DGNSS_STATE_NTRIP_SESSION_STARTED;
        mXtraObserver.stopDgnssSource();
    }
}

void GnssAdapter::reportGGAToNtrip(const char* nmea) {

#define POS_OF_GGA (3)  //start position of "GGA"
#define COMMAS_BEFORE_VALID (6) //"$GPGGA,,,,,,0,,,,,,,,*hh"

    if (!isDgnssNmeaRequired()) {
        return;
    }

    if (nullptr == nmea || 0 == strlen(nmea)) {
        return;
    }

    string nmeaString(nmea);
    size_t foundPos = nmeaString.find("GGA");
    size_t foundNth = 0;
    string GGAString;

    if (foundPos != string::npos && foundPos >= POS_OF_GGA) {
        size_t foundNextSentence = nmeaString.find("$", foundPos);
        if (foundNextSentence != string::npos) {
            /* remove other sentences after GGA */
            GGAString = nmeaString.substr(foundPos - POS_OF_GGA, foundNextSentence);
        } else {
            /* GGA is the last sentence */
            GGAString = nmeaString.substr(foundPos - POS_OF_GGA);
        }
        LOC_LOGd("GGAString %s", GGAString.c_str());

        foundPos = GGAString.find(",");
        while (foundPos != string::npos && foundNth < COMMAS_BEFORE_VALID) {
            foundPos++;
            foundNth++;
            foundPos = GGAString.find(",", foundPos);
        }

        if (COMMAS_BEFORE_VALID == foundNth && GGAString.at(foundPos-1) != '0') {
            mDgnssState |= DGNSS_STATE_NO_NMEA_PENDING;
            mStartDgnssNtripParams.nmea = std::move(GGAString);
            checkUpdateDgnssNtrip(true);
        }
    }

    return;
}