android-15.0.0_r3/s

/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#define LOG_TAG "BtGatt.JNI"

#include <base/functional/bind.h>
#include <base/functional/callback.h>
#include <string.h>

#include <array>
#include <memory>
#include <shared_mutex>

#include "com_android_bluetooth.h"
#include "common/init_flags.h"
#include "hardware/bt_gatt.h"
#include "hardware/bt_gatt_types.h"
#include "main/shim/le_scanning_manager.h"
#include "rust/cxx.h"
#include "rust/src/gatt/ffi/gatt_shim.h"
#include "src/gatt/ffi.rs.h"

using bluetooth::Uuid;

#define UUID_PARAMS(uuid) uuid_lsb(uuid), uuid_msb(uuid)

static Uuid from_java_uuid(jlong uuid_msb, jlong uuid_lsb) {
  std::array<uint8_t, Uuid::kNumBytes128> uu;
  for (int i = 0; i < 8; i++) {
    uu[7 - i] = (uuid_msb >> (8 * i)) & 0xFF;
    uu[15 - i] = (uuid_lsb >> (8 * i)) & 0xFF;
  }
  return Uuid::From128BitBE(uu);
}

static uint64_t uuid_lsb(const Uuid& uuid) {
  uint64_t lsb = 0;

  auto uu = uuid.To128BitBE();
  for (int i = 8; i <= 15; i++) {
    lsb <<= 8;
    lsb |= uu[i];
  }

  return lsb;
}

static uint64_t uuid_msb(const Uuid& uuid) {
  uint64_t msb = 0;

  auto uu = uuid.To128BitBE();
  for (int i = 0; i <= 7; i++) {
    msb <<= 8;
    msb |= uu[i];
  }

  return msb;
}

static RawAddress str2addr(JNIEnv* env, jstring address) {
  RawAddress bd_addr;
  const char* c_address = env->GetStringUTFChars(address, NULL);
  if (!c_address) return bd_addr;

  RawAddress::FromString(std::string(c_address), bd_addr);
  env->ReleaseStringUTFChars(address, c_address);

  return bd_addr;
}

static jstring bdaddr2newjstr(JNIEnv* env, const RawAddress* bda) {
  char c_address[32];
  snprintf(c_address, sizeof(c_address), "%02X:%02X:%02X:%02X:%02X:%02X",
           bda->address[0], bda->address[1], bda->address[2], bda->address[3],
           bda->address[4], bda->address[5]);

  return env->NewStringUTF(c_address);
}

static std::vector<uint8_t> toVector(JNIEnv* env, jbyteArray ba) {
  jbyte* data_data = env->GetByteArrayElements(ba, NULL);
  uint16_t data_len = (uint16_t)env->GetArrayLength(ba);
  std::vector<uint8_t> data_vec(data_data, data_data + data_len);
  env->ReleaseByteArrayElements(ba, data_data, JNI_ABORT);
  return data_vec;
}

namespace android {

/**
 * Client callback methods
 */
static jmethodID method_onClientRegistered;
static jmethodID method_onConnected;
static jmethodID method_onDisconnected;
static jmethodID method_onReadCharacteristic;
static jmethodID method_onWriteCharacteristic;
static jmethodID method_onExecuteCompleted;
static jmethodID method_onSearchCompleted;
static jmethodID method_onReadDescriptor;
static jmethodID method_onWriteDescriptor;
static jmethodID method_onNotify;
static jmethodID method_onRegisterForNotifications;
static jmethodID method_onReadRemoteRssi;
static jmethodID method_onConfigureMTU;
static jmethodID method_onClientCongestion;

static jmethodID method_getSampleGattDbElement;
static jmethodID method_onGetGattDb;
static jmethodID method_onClientPhyUpdate;
static jmethodID method_onClientPhyRead;
static jmethodID method_onClientConnUpdate;
static jmethodID method_onServiceChanged;
static jmethodID method_onClientSubrateChange;

/**
 * Server callback methods
 */
static jmethodID method_onServerRegistered;
static jmethodID method_onClientConnected;
static jmethodID method_onServiceAdded;
static jmethodID method_onServiceStopped;
static jmethodID method_onServiceDeleted;
static jmethodID method_onResponseSendCompleted;
static jmethodID method_onServerReadCharacteristic;
static jmethodID method_onServerReadDescriptor;
static jmethodID method_onServerWriteCharacteristic;
static jmethodID method_onServerWriteDescriptor;
static jmethodID method_onExecuteWrite;
static jmethodID method_onNotificationSent;
static jmethodID method_onServerCongestion;
static jmethodID method_onServerMtuChanged;
static jmethodID method_onServerPhyUpdate;
static jmethodID method_onServerPhyRead;
static jmethodID method_onServerConnUpdate;
static jmethodID method_onServerSubrateChange;

/**
 * Advertiser callback methods
 */
static jmethodID method_onAdvertisingSetStarted;
static jmethodID method_onOwnAddressRead;
static jmethodID method_onAdvertisingEnabled;
static jmethodID method_onAdvertisingDataSet;
static jmethodID method_onScanResponseDataSet;
static jmethodID method_onAdvertisingParametersUpdated;
static jmethodID method_onPeriodicAdvertisingParametersUpdated;
static jmethodID method_onPeriodicAdvertisingDataSet;
static jmethodID method_onPeriodicAdvertisingEnabled;

/**
 * Scanner callback methods
 */
static jmethodID method_onScannerRegistered;
static jmethodID method_onScanResult;
static jmethodID method_onScanFilterConfig;
static jmethodID method_onScanFilterParamsConfigured;
static jmethodID method_onScanFilterEnableDisabled;
static jmethodID method_onBatchScanStorageConfigured;
static jmethodID method_onBatchScanStartStopped;
static jmethodID method_onBatchScanReports;
static jmethodID method_onBatchScanThresholdCrossed;
static jmethodID method_createOnTrackAdvFoundLostObject;
static jmethodID method_onTrackAdvFoundLost;
static jmethodID method_onScanParamSetupCompleted;

/**
 * Periodic scanner callback methods
 */
static jmethodID method_onSyncLost;
static jmethodID method_onSyncReport;
static jmethodID method_onSyncStarted;
static jmethodID method_onSyncTransferredCallback;
static jmethodID method_onBigInfoReport;

/**
 * Distance Measurement callback methods
 */
static jmethodID method_onDistanceMeasurementStarted;
static jmethodID method_onDistanceMeasurementStartFail;
static jmethodID method_onDistanceMeasurementStopped;
static jmethodID method_onDistanceMeasurementResult;

/**
 * Static variables
 */
static const btgatt_interface_t* sGattIf = NULL;
/** Pointer to the LE scanner interface methods.*/
static BleScannerInterface* sScanner = NULL;
static jobject mCallbacksObj = NULL;
static jobject mScanCallbacksObj = NULL;
static jobject mAdvertiseCallbacksObj = NULL;
static jobject mPeriodicScanCallbacksObj = NULL;
static jobject mDistanceMeasurementCallbacksObj = NULL;
static std::shared_mutex callbacks_mutex;

/**
 * BTA client callbacks
 */

void btgattc_register_app_cb(int status, int clientIf, const Uuid& app_uuid) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onClientRegistered, status,
                               clientIf, UUID_PARAMS(app_uuid));
}

void btgattc_scan_result_cb(uint16_t event_type, uint8_t addr_type,
                            RawAddress* bda, uint8_t primary_phy,
                            uint8_t secondary_phy, uint8_t advertising_sid,
                            int8_t tx_power, int8_t rssi,
                            uint16_t periodic_adv_int,
                            std::vector<uint8_t> adv_data,
                            RawAddress* original_bda) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), bda));
  ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(),
                                sCallbackEnv->NewByteArray(adv_data.size()));
  sCallbackEnv->SetByteArrayRegion(jb.get(), 0, adv_data.size(),
                                   (jbyte*)adv_data.data());

  ScopedLocalRef<jstring> original_address(
      sCallbackEnv.get(), bdaddr2newjstr(sCallbackEnv.get(), original_bda));

  sCallbackEnv->CallVoidMethod(
      mScanCallbacksObj, method_onScanResult, event_type, addr_type,
      address.get(), primary_phy, secondary_phy, advertising_sid, tx_power,
      rssi, periodic_adv_int, jb.get(), original_address.get());
}

void btgattc_open_cb(int conn_id, int status, int clientIf,
                     const RawAddress& bda) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onConnected, clientIf,
                               conn_id, status, address.get());
}

void btgattc_close_cb(int conn_id, int status, int clientIf,
                      const RawAddress& bda) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onDisconnected, clientIf,
                               conn_id, status, address.get());
}

void btgattc_search_complete_cb(int conn_id, int status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onSearchCompleted, conn_id,
                               status);
}

void btgattc_register_for_notification_cb(int conn_id, int registered,
                                          int status, uint16_t handle) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onRegisterForNotifications,
                               conn_id, status, registered, handle);
}

void btgattc_notify_cb(int conn_id, const btgatt_notify_params_t& p_data) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(
      sCallbackEnv.get(), bdaddr2newjstr(sCallbackEnv.get(), &p_data.bda));
  ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(),
                                sCallbackEnv->NewByteArray(p_data.len));
  sCallbackEnv->SetByteArrayRegion(jb.get(), 0, p_data.len,
                                   (jbyte*)p_data.value);

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onNotify, conn_id,
                               address.get(), p_data.handle, p_data.is_notify,
                               jb.get());
}

void btgattc_read_characteristic_cb(int conn_id, int status,
                                    const btgatt_read_params_t& p_data) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(), NULL);
  if (status == 0) {  // Success
    jb.reset(sCallbackEnv->NewByteArray(p_data.value.len));
    sCallbackEnv->SetByteArrayRegion(jb.get(), 0, p_data.value.len,
                                     (jbyte*)p_data.value.value);
  } else {
    uint8_t value = 0;
    jb.reset(sCallbackEnv->NewByteArray(1));
    sCallbackEnv->SetByteArrayRegion(jb.get(), 0, 1, (jbyte*)&value);
  }

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onReadCharacteristic,
                               conn_id, status, p_data.handle, jb.get());
}

void btgattc_write_characteristic_cb(int conn_id, int status, uint16_t handle,
                                     uint16_t len, const uint8_t* value) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(), NULL);
  jb.reset(sCallbackEnv->NewByteArray(len));
  sCallbackEnv->SetByteArrayRegion(jb.get(), 0, len, (jbyte*)value);
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onWriteCharacteristic,
                               conn_id, status, handle, jb.get());
}

void btgattc_execute_write_cb(int conn_id, int status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onExecuteCompleted,
                               conn_id, status);
}

void btgattc_read_descriptor_cb(int conn_id, int status,
                                const btgatt_read_params_t& p_data) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(), NULL);
  if (p_data.value.len != 0) {
    jb.reset(sCallbackEnv->NewByteArray(p_data.value.len));
    sCallbackEnv->SetByteArrayRegion(jb.get(), 0, p_data.value.len,
                                     (jbyte*)p_data.value.value);
  } else {
    jb.reset(sCallbackEnv->NewByteArray(1));
  }

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onReadDescriptor, conn_id,
                               status, p_data.handle, jb.get());
}

void btgattc_write_descriptor_cb(int conn_id, int status, uint16_t handle,
                                 uint16_t len, const uint8_t* value) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(), NULL);
  jb.reset(sCallbackEnv->NewByteArray(len));
  sCallbackEnv->SetByteArrayRegion(jb.get(), 0, len, (jbyte*)value);
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onWriteDescriptor, conn_id,
                               status, handle, jb.get());
}

void btgattc_remote_rssi_cb(int client_if, const RawAddress& bda, int rssi,
                            int status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onReadRemoteRssi,
                               client_if, address.get(), rssi, status);
}

void btgattc_configure_mtu_cb(int conn_id, int status, int mtu) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onConfigureMTU, conn_id,
                               status, mtu);
}

void btgattc_congestion_cb(int conn_id, bool congested) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onClientCongestion,
                               conn_id, congested);
}

void btgattc_batchscan_reports_cb(int client_if, int status, int report_format,
                                  int num_records, std::vector<uint8_t> data) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
  ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(),
                                sCallbackEnv->NewByteArray(data.size()));
  sCallbackEnv->SetByteArrayRegion(jb.get(), 0, data.size(),
                                   (jbyte*)data.data());

  sCallbackEnv->CallVoidMethod(mScanCallbacksObj, method_onBatchScanReports,
                               status, client_if, report_format, num_records,
                               jb.get());
}

void btgattc_batchscan_threshold_cb(int client_if) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mScanCallbacksObj,
                               method_onBatchScanThresholdCrossed, client_if);
}

void btgattc_track_adv_event_cb(btgatt_track_adv_info_t* p_adv_track_info) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;

  ScopedLocalRef<jstring> address(
      sCallbackEnv.get(),
      bdaddr2newjstr(sCallbackEnv.get(), &p_adv_track_info->bd_addr));

  ScopedLocalRef<jbyteArray> jb_adv_pkt(
      sCallbackEnv.get(),
      sCallbackEnv->NewByteArray(p_adv_track_info->adv_pkt_len));
  ScopedLocalRef<jbyteArray> jb_scan_rsp(
      sCallbackEnv.get(),
      sCallbackEnv->NewByteArray(p_adv_track_info->scan_rsp_len));

  sCallbackEnv->SetByteArrayRegion(jb_adv_pkt.get(), 0,
                                   p_adv_track_info->adv_pkt_len,
                                   (jbyte*)p_adv_track_info->p_adv_pkt_data);

  sCallbackEnv->SetByteArrayRegion(jb_scan_rsp.get(), 0,
                                   p_adv_track_info->scan_rsp_len,
                                   (jbyte*)p_adv_track_info->p_scan_rsp_data);

  ScopedLocalRef<jobject> trackadv_obj(
      sCallbackEnv.get(),
      sCallbackEnv->CallObjectMethod(
          mScanCallbacksObj, method_createOnTrackAdvFoundLostObject,
          p_adv_track_info->client_if, p_adv_track_info->adv_pkt_len,
          jb_adv_pkt.get(), p_adv_track_info->scan_rsp_len, jb_scan_rsp.get(),
          p_adv_track_info->filt_index, p_adv_track_info->advertiser_state,
          p_adv_track_info->advertiser_info_present, address.get(),
          p_adv_track_info->addr_type, p_adv_track_info->tx_power,
          p_adv_track_info->rssi_value, p_adv_track_info->time_stamp));

  if (NULL != trackadv_obj.get()) {
    sCallbackEnv->CallVoidMethod(mScanCallbacksObj, method_onTrackAdvFoundLost,
                                 trackadv_obj.get());
  }
}

void fillGattDbElementArray(JNIEnv* env, jobject* array,
                            const btgatt_db_element_t* db, int count) {
  // Because JNI uses a different class loader in the callback context, we
  // cannot simply get the class.
  // As a workaround, we have to make sure we obtain an object of the class
  // first, as this will cause
  // class loader to load it.
  ScopedLocalRef<jobject> objectForClass(
      env, env->CallObjectMethod(mCallbacksObj, method_getSampleGattDbElement));
  ScopedLocalRef<jclass> gattDbElementClazz(
      env, env->GetObjectClass(objectForClass.get()));

  jmethodID gattDbElementConstructor =
      env->GetMethodID(gattDbElementClazz.get(), "<init>", "()V");

  jmethodID arrayAdd;

  const JNIJavaMethod javaMethods[] = {
      {"add", "(Ljava/lang/Object;)Z", &arrayAdd},
  };
  GET_JAVA_METHODS(env, "java/util/ArrayList", javaMethods);

  jmethodID uuidConstructor;

  const JNIJavaMethod javaUuidMethods[] = {
      {"<init>", "(JJ)V", &uuidConstructor},
  };
  GET_JAVA_METHODS(env, "java/util/UUID", javaUuidMethods);

  for (int i = 0; i < count; i++) {
    const btgatt_db_element_t& curr = db[i];

    ScopedLocalRef<jobject> element(
        env,
        env->NewObject(gattDbElementClazz.get(), gattDbElementConstructor));

    jfieldID fid = env->GetFieldID(gattDbElementClazz.get(), "id", "I");
    env->SetIntField(element.get(), fid, curr.id);

    fid = env->GetFieldID(gattDbElementClazz.get(), "attributeHandle", "I");
    env->SetIntField(element.get(), fid, curr.attribute_handle);

    ScopedLocalRef<jclass> uuidClazz(env, env->FindClass("java/util/UUID"));
    ScopedLocalRef<jobject> uuid(
        env, env->NewObject(uuidClazz.get(), uuidConstructor,
                            uuid_msb(curr.uuid), uuid_lsb(curr.uuid)));
    fid = env->GetFieldID(gattDbElementClazz.get(), "uuid", "Ljava/util/UUID;");
    env->SetObjectField(element.get(), fid, uuid.get());

    fid = env->GetFieldID(gattDbElementClazz.get(), "type", "I");
    env->SetIntField(element.get(), fid, curr.type);

    fid = env->GetFieldID(gattDbElementClazz.get(), "attributeHandle", "I");
    env->SetIntField(element.get(), fid, curr.attribute_handle);

    fid = env->GetFieldID(gattDbElementClazz.get(), "startHandle", "I");
    env->SetIntField(element.get(), fid, curr.start_handle);

    fid = env->GetFieldID(gattDbElementClazz.get(), "endHandle", "I");
    env->SetIntField(element.get(), fid, curr.end_handle);

    fid = env->GetFieldID(gattDbElementClazz.get(), "properties", "I");
    env->SetIntField(element.get(), fid, curr.properties);

    env->CallBooleanMethod(*array, arrayAdd, element.get());
  }
}

void btgattc_get_gatt_db_cb(int conn_id, const btgatt_db_element_t* db,
                            int count) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  jclass arrayListclazz = sCallbackEnv->FindClass("java/util/ArrayList");
  ScopedLocalRef<jobject> array(
      sCallbackEnv.get(),
      sCallbackEnv->NewObject(
          arrayListclazz,
          sCallbackEnv->GetMethodID(arrayListclazz, "<init>", "()V")));

  jobject arrayPtr = array.get();
  fillGattDbElementArray(sCallbackEnv.get(), &arrayPtr, db, count);

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onGetGattDb, conn_id,
                               array.get());
}

void btgattc_phy_updated_cb(int conn_id, uint8_t tx_phy, uint8_t rx_phy,
                            uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onClientPhyUpdate, conn_id,
                               tx_phy, rx_phy, status);
}

void btgattc_conn_updated_cb(int conn_id, uint16_t interval, uint16_t latency,
                             uint16_t timeout, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onClientConnUpdate,
                               conn_id, interval, latency, timeout, status);
}

void btgattc_service_changed_cb(int conn_id) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServiceChanged, conn_id);
}

void btgattc_subrate_change_cb(int conn_id, uint16_t subrate_factor,
                               uint16_t latency, uint16_t cont_num,
                               uint16_t timeout, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onClientSubrateChange,
                               conn_id, subrate_factor, latency, cont_num,
                               timeout, status);
}

static const btgatt_scanner_callbacks_t sGattScannerCallbacks = {
    btgattc_scan_result_cb,
    btgattc_batchscan_reports_cb,
    btgattc_batchscan_threshold_cb,
    btgattc_track_adv_event_cb,
};

static const btgatt_client_callbacks_t sGattClientCallbacks = {
    btgattc_register_app_cb,
    btgattc_open_cb,
    btgattc_close_cb,
    btgattc_search_complete_cb,
    btgattc_register_for_notification_cb,
    btgattc_notify_cb,
    btgattc_read_characteristic_cb,
    btgattc_write_characteristic_cb,
    btgattc_read_descriptor_cb,
    btgattc_write_descriptor_cb,
    btgattc_execute_write_cb,
    btgattc_remote_rssi_cb,
    btgattc_configure_mtu_cb,
    btgattc_congestion_cb,
    btgattc_get_gatt_db_cb,
    NULL, /* services_removed_cb */
    NULL, /* services_added_cb */
    btgattc_phy_updated_cb,
    btgattc_conn_updated_cb,
    btgattc_service_changed_cb,
    btgattc_subrate_change_cb,
};

/**
 * BTA server callbacks
 */

void btgatts_register_app_cb(int status, int server_if, const Uuid& uuid) {
  bluetooth::gatt::open_server(server_if);
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerRegistered, status,
                               server_if, UUID_PARAMS(uuid));
}

void btgatts_connection_cb(int conn_id, int server_if, int connected,
                           const RawAddress& bda) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onClientConnected,
                               address.get(), connected, conn_id, server_if);
}

void btgatts_service_added_cb(int status, int server_if,
                              const btgatt_db_element_t* service,
                              size_t service_count) {
  // mirror the database in rust, now that it's created.
  if (status == 0x00 /* SUCCESS */) {
    auto service_records = rust::Vec<bluetooth::gatt::GattRecord>();
    for (size_t i = 0; i != service_count; ++i) {
      auto& curr_service = service[i];
      service_records.push_back(bluetooth::gatt::GattRecord{
          curr_service.uuid, (bluetooth::gatt::GattRecordType)curr_service.type,
          curr_service.attribute_handle, curr_service.properties,
          curr_service.extended_properties, curr_service.permissions});
    }
    bluetooth::gatt::add_service(server_if, std::move(service_records));
  }

  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  jclass arrayListclazz = sCallbackEnv->FindClass("java/util/ArrayList");
  ScopedLocalRef<jobject> array(
      sCallbackEnv.get(),
      sCallbackEnv->NewObject(
          arrayListclazz,
          sCallbackEnv->GetMethodID(arrayListclazz, "<init>", "()V")));
  jobject arrayPtr = array.get();
  fillGattDbElementArray(sCallbackEnv.get(), &arrayPtr, service, service_count);

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServiceAdded, status,
                               server_if, array.get());
}

void btgatts_service_stopped_cb(int status, int server_if, int srvc_handle) {
  bluetooth::gatt::remove_service(server_if, srvc_handle);

  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServiceStopped, status,
                               server_if, srvc_handle);
}

void btgatts_service_deleted_cb(int status, int server_if, int srvc_handle) {
  bluetooth::gatt::remove_service(server_if, srvc_handle);

  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServiceDeleted, status,
                               server_if, srvc_handle);
}

void btgatts_request_read_characteristic_cb(int conn_id, int trans_id,
                                            const RawAddress& bda,
                                            int attr_handle, int offset,
                                            bool is_long) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerReadCharacteristic,
                               address.get(), conn_id, trans_id, attr_handle,
                               offset, is_long);
}

void btgatts_request_read_descriptor_cb(int conn_id, int trans_id,
                                        const RawAddress& bda, int attr_handle,
                                        int offset, bool is_long) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerReadDescriptor,
                               address.get(), conn_id, trans_id, attr_handle,
                               offset, is_long);
}

void btgatts_request_write_characteristic_cb(int conn_id, int trans_id,
                                             const RawAddress& bda,
                                             int attr_handle, int offset,
                                             bool need_rsp, bool is_prep,
                                             const uint8_t* value,
                                             size_t length) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));
  ScopedLocalRef<jbyteArray> val(sCallbackEnv.get(),
                                 sCallbackEnv->NewByteArray(length));
  if (val.get())
    sCallbackEnv->SetByteArrayRegion(val.get(), 0, length, (jbyte*)value);
  sCallbackEnv->CallVoidMethod(
      mCallbacksObj, method_onServerWriteCharacteristic, address.get(), conn_id,
      trans_id, attr_handle, offset, length, need_rsp, is_prep, val.get());
}

void btgatts_request_write_descriptor_cb(int conn_id, int trans_id,
                                         const RawAddress& bda, int attr_handle,
                                         int offset, bool need_rsp,
                                         bool is_prep, const uint8_t* value,
                                         size_t length) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));
  ScopedLocalRef<jbyteArray> val(sCallbackEnv.get(),
                                 sCallbackEnv->NewByteArray(length));
  if (val.get())
    sCallbackEnv->SetByteArrayRegion(val.get(), 0, length, (jbyte*)value);
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerWriteDescriptor,
                               address.get(), conn_id, trans_id, attr_handle,
                               offset, length, need_rsp, is_prep, val.get());
}

void btgatts_request_exec_write_cb(int conn_id, int trans_id,
                                   const RawAddress& bda, int exec_write) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onExecuteWrite,
                               address.get(), conn_id, trans_id, exec_write);
}

void btgatts_response_confirmation_cb(int status, int handle) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onResponseSendCompleted,
                               status, handle);
}

void btgatts_indication_sent_cb(int conn_id, int status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onNotificationSent,
                               conn_id, status);
}

void btgatts_congestion_cb(int conn_id, bool congested) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerCongestion,
                               conn_id, congested);
}

void btgatts_mtu_changed_cb(int conn_id, int mtu) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerMtuChanged,
                               conn_id, mtu);
}

void btgatts_phy_updated_cb(int conn_id, uint8_t tx_phy, uint8_t rx_phy,
                            uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerPhyUpdate, conn_id,
                               tx_phy, rx_phy, status);
}

void btgatts_conn_updated_cb(int conn_id, uint16_t interval, uint16_t latency,
                             uint16_t timeout, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerConnUpdate,
                               conn_id, interval, latency, timeout, status);
}

void btgatts_subrate_change_cb(int conn_id, uint16_t subrate_factor,
                               uint16_t latency, uint16_t cont_num,
                               uint16_t timeout, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerSubrateChange,
                               conn_id, subrate_factor, latency, cont_num,
                               timeout, status);
}

static const btgatt_server_callbacks_t sGattServerCallbacks = {
    btgatts_register_app_cb,
    btgatts_connection_cb,
    btgatts_service_added_cb,
    btgatts_service_stopped_cb,
    btgatts_service_deleted_cb,
    btgatts_request_read_characteristic_cb,
    btgatts_request_read_descriptor_cb,
    btgatts_request_write_characteristic_cb,
    btgatts_request_write_descriptor_cb,
    btgatts_request_exec_write_cb,
    btgatts_response_confirmation_cb,
    btgatts_indication_sent_cb,
    btgatts_congestion_cb,
    btgatts_mtu_changed_cb,
    btgatts_phy_updated_cb,
    btgatts_conn_updated_cb,
    btgatts_subrate_change_cb,
};

/**
 * GATT callbacks
 */

static const btgatt_callbacks_t sGattCallbacks = {
    sizeof(btgatt_callbacks_t), &sGattClientCallbacks, &sGattServerCallbacks,
    &sGattScannerCallbacks,
};

class JniAdvertisingCallbacks : AdvertisingCallbacks {
 public:
  static AdvertisingCallbacks* GetInstance() {
    static AdvertisingCallbacks* instance = new JniAdvertisingCallbacks();
    return instance;
  }

  void OnAdvertisingSetStarted(int reg_id, uint8_t advertiser_id,
                               int8_t tx_power, uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || mAdvertiseCallbacksObj == NULL) return;
    sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                                 method_onAdvertisingSetStarted, reg_id,
                                 advertiser_id, tx_power, status);
  }

  void OnAdvertisingEnabled(uint8_t advertiser_id, bool enable,
                            uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || mAdvertiseCallbacksObj == NULL) return;
    sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                                 method_onAdvertisingEnabled, advertiser_id,
                                 enable, status);
  }

  void OnAdvertisingDataSet(uint8_t advertiser_id, uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || mAdvertiseCallbacksObj == NULL) return;
    sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                                 method_onAdvertisingDataSet, advertiser_id,
                                 status);
  }

  void OnScanResponseDataSet(uint8_t advertiser_id, uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || mAdvertiseCallbacksObj == NULL) return;
    sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                                 method_onScanResponseDataSet, advertiser_id,
                                 status);
  }

  void OnAdvertisingParametersUpdated(uint8_t advertiser_id, int8_t tx_power,
                                      uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || mAdvertiseCallbacksObj == NULL) return;
    sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                                 method_onAdvertisingParametersUpdated,
                                 advertiser_id, tx_power, status);
  }

  void OnPeriodicAdvertisingParametersUpdated(uint8_t advertiser_id,
                                              uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || mAdvertiseCallbacksObj == NULL) return;
    sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                                 method_onPeriodicAdvertisingParametersUpdated,
                                 advertiser_id, status);
  }

  void OnPeriodicAdvertisingDataSet(uint8_t advertiser_id, uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || mAdvertiseCallbacksObj == NULL) return;
    sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                                 method_onPeriodicAdvertisingDataSet,
                                 advertiser_id, status);
  }

  void OnPeriodicAdvertisingEnabled(uint8_t advertiser_id, bool enable,
                                    uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || mAdvertiseCallbacksObj == NULL) return;
    sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                                 method_onPeriodicAdvertisingEnabled,
                                 advertiser_id, enable, status);
  }

  void OnOwnAddressRead(uint8_t advertiser_id, uint8_t address_type,
                        RawAddress address) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || mAdvertiseCallbacksObj == NULL) return;

    ScopedLocalRef<jstring> addr(sCallbackEnv.get(),
                                 bdaddr2newjstr(sCallbackEnv.get(), &address));
    sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                                 method_onOwnAddressRead, advertiser_id,
                                 address_type, addr.get());
  }
};

class JniScanningCallbacks : ScanningCallbacks {
 public:
  static ScanningCallbacks* GetInstance() {
    static ScanningCallbacks* instance = new JniScanningCallbacks();
    return instance;
  }

  void OnScannerRegistered(const Uuid app_uuid, uint8_t scannerId,
                           uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
    sCallbackEnv->CallVoidMethod(mScanCallbacksObj, method_onScannerRegistered,
                                 status, scannerId, UUID_PARAMS(app_uuid));
  }

  void OnSetScannerParameterComplete(uint8_t scannerId, uint8_t status) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
    sCallbackEnv->CallVoidMethod(
        mScanCallbacksObj, method_onScanParamSetupCompleted, status, scannerId);
  }

  void OnScanResult(uint16_t event_type, uint8_t addr_type, RawAddress bda,
                    uint8_t primary_phy, uint8_t secondary_phy,
                    uint8_t advertising_sid, int8_t tx_power, int8_t rssi,
                    uint16_t periodic_adv_int, std::vector<uint8_t> adv_data) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;

    ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                    bdaddr2newjstr(sCallbackEnv.get(), &bda));
    ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(),
                                  sCallbackEnv->NewByteArray(adv_data.size()));
    sCallbackEnv->SetByteArrayRegion(jb.get(), 0, adv_data.size(),
                                     (jbyte*)adv_data.data());

    // TODO(optedoblivion): Figure out original address for here, use empty
    // for now

    // length of data + '\0'
    char empty_address[18] = "00:00:00:00:00:00";
    ScopedLocalRef<jstring> fake_address(
        sCallbackEnv.get(), sCallbackEnv->NewStringUTF(empty_address));

    sCallbackEnv->CallVoidMethod(
        mScanCallbacksObj, method_onScanResult, event_type, addr_type,
        address.get(), primary_phy, secondary_phy, advertising_sid, tx_power,
        rssi, periodic_adv_int, jb.get(), fake_address.get());
  }

  void OnTrackAdvFoundLost(AdvertisingTrackInfo track_info) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mScanCallbacksObj) {
      log::error("sCallbackEnv not valid or no mScanCallbacksObj.");
      return;
    }

    ScopedLocalRef<jstring> address(
        sCallbackEnv.get(),
        bdaddr2newjstr(sCallbackEnv.get(), &track_info.advertiser_address));

    ScopedLocalRef<jbyteArray> jb_adv_pkt(
        sCallbackEnv.get(),
        sCallbackEnv->NewByteArray(track_info.adv_packet_len));
    ScopedLocalRef<jbyteArray> jb_scan_rsp(
        sCallbackEnv.get(),
        sCallbackEnv->NewByteArray(track_info.scan_response_len));

    sCallbackEnv->SetByteArrayRegion(jb_adv_pkt.get(), 0,
                                     track_info.adv_packet_len,
                                     (jbyte*)track_info.adv_packet.data());

    sCallbackEnv->SetByteArrayRegion(jb_scan_rsp.get(), 0,
                                     track_info.scan_response_len,
                                     (jbyte*)track_info.scan_response.data());

    ScopedLocalRef<jobject> trackadv_obj(
        sCallbackEnv.get(),
        sCallbackEnv->CallObjectMethod(
            mScanCallbacksObj, method_createOnTrackAdvFoundLostObject,
            track_info.scanner_id, track_info.adv_packet_len, jb_adv_pkt.get(),
            track_info.scan_response_len, jb_scan_rsp.get(),
            track_info.filter_index, track_info.advertiser_state,
            track_info.advertiser_info_present, address.get(),
            track_info.advertiser_address_type, track_info.tx_power,
            track_info.rssi, track_info.time_stamp));

    if (NULL != trackadv_obj.get()) {
      sCallbackEnv->CallVoidMethod(
          mScanCallbacksObj, method_onTrackAdvFoundLost, trackadv_obj.get());
    }
  }

  void OnBatchScanReports(int client_if, int status, int report_format,
                          int num_records, std::vector<uint8_t> data) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
    ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(),
                                  sCallbackEnv->NewByteArray(data.size()));
    sCallbackEnv->SetByteArrayRegion(jb.get(), 0, data.size(),
                                     (jbyte*)data.data());

    sCallbackEnv->CallVoidMethod(mScanCallbacksObj, method_onBatchScanReports,
                                 status, client_if, report_format, num_records,
                                 jb.get());
  }

  void OnBatchScanThresholdCrossed(int client_if) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
    sCallbackEnv->CallVoidMethod(mScanCallbacksObj,
                                 method_onBatchScanThresholdCrossed, client_if);
  }

  void OnPeriodicSyncStarted(int reg_id, uint8_t status, uint16_t sync_handle,
                             uint8_t sid, uint8_t address_type,
                             RawAddress address, uint8_t phy,
                             uint16_t interval) override {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid()) return;
    if (!mPeriodicScanCallbacksObj) {
      log::error("mPeriodicScanCallbacksObj is NULL. Return.");
      return;
    }
    ScopedLocalRef<jstring> addr(sCallbackEnv.get(),
                                 bdaddr2newjstr(sCallbackEnv.get(), &address));

    sCallbackEnv->CallVoidMethod(
        mPeriodicScanCallbacksObj, method_onSyncStarted, reg_id, sync_handle,
        sid, address_type, addr.get(), phy, interval, status);
  }

  void OnPeriodicSyncReport(uint16_t sync_handle, int8_t tx_power, int8_t rssi,
                            uint8_t data_status,
                            std::vector<uint8_t> data) override {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mPeriodicScanCallbacksObj) return;

    ScopedLocalRef<jbyteArray> jb(sCallbackEnv.get(),
                                  sCallbackEnv->NewByteArray(data.size()));
    sCallbackEnv->SetByteArrayRegion(jb.get(), 0, data.size(),
                                     (jbyte*)data.data());

    sCallbackEnv->CallVoidMethod(mPeriodicScanCallbacksObj, method_onSyncReport,
                                 sync_handle, tx_power, rssi, data_status,
                                 jb.get());
  }

  void OnPeriodicSyncLost(uint16_t sync_handle) override {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mPeriodicScanCallbacksObj) return;

    sCallbackEnv->CallVoidMethod(mPeriodicScanCallbacksObj, method_onSyncLost,
                                 sync_handle);
  }

  void OnPeriodicSyncTransferred(int pa_source, uint8_t status,
                                 RawAddress address) override {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid()) return;
    if (!mPeriodicScanCallbacksObj) {
      log::error("mPeriodicScanCallbacksObj is NULL. Return.");
      return;
    }
    ScopedLocalRef<jstring> addr(sCallbackEnv.get(),
                                 bdaddr2newjstr(sCallbackEnv.get(), &address));

    sCallbackEnv->CallVoidMethod(mPeriodicScanCallbacksObj,
                                 method_onSyncTransferredCallback, pa_source,
                                 status, addr.get());
  }

  void OnBigInfoReport(uint16_t sync_handle, bool encrypted) {
        std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid()) return;

    if (!mPeriodicScanCallbacksObj) {
      log::error("mPeriodicScanCallbacksObj is NULL. Return.");
      return;
    }
    sCallbackEnv->CallVoidMethod(mPeriodicScanCallbacksObj,
                                 method_onBigInfoReport, sync_handle, encrypted);
  }
};

class JniDistanceMeasurementCallbacks : DistanceMeasurementCallbacks {
 public:
  static DistanceMeasurementCallbacks* GetInstance() {
    static DistanceMeasurementCallbacks* instance =
        new JniDistanceMeasurementCallbacks();
    return instance;
  }

  void OnDistanceMeasurementStarted(RawAddress address, uint8_t method) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mDistanceMeasurementCallbacksObj) return;
    ScopedLocalRef<jstring> addr(sCallbackEnv.get(),
                                 bdaddr2newjstr(sCallbackEnv.get(), &address));
    sCallbackEnv->CallVoidMethod(mDistanceMeasurementCallbacksObj,
                                 method_onDistanceMeasurementStarted,
                                 addr.get(), method);
  }
  void OnDistanceMeasurementStartFail(RawAddress address, uint8_t reason,
                                      uint8_t method) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mDistanceMeasurementCallbacksObj) return;
    ScopedLocalRef<jstring> addr(sCallbackEnv.get(),
                                 bdaddr2newjstr(sCallbackEnv.get(), &address));
    sCallbackEnv->CallVoidMethod(mDistanceMeasurementCallbacksObj,
                                 method_onDistanceMeasurementStartFail,
                                 addr.get(), reason, method);
  }
  void OnDistanceMeasurementStopped(RawAddress address, uint8_t reason,
                                    uint8_t method) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mDistanceMeasurementCallbacksObj) return;
    ScopedLocalRef<jstring> addr(sCallbackEnv.get(),
                                 bdaddr2newjstr(sCallbackEnv.get(), &address));
    sCallbackEnv->CallVoidMethod(mDistanceMeasurementCallbacksObj,
                                 method_onDistanceMeasurementStopped,
                                 addr.get(), reason, method);
  }

  void OnDistanceMeasurementResult(RawAddress address, uint32_t centimeter,
                                   uint32_t error_centimeter, int azimuth_angle,
                                   int error_azimuth_angle, int altitude_angle,
                                   int error_altitude_angle, uint8_t method) {
    std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
    CallbackEnv sCallbackEnv(__func__);
    if (!sCallbackEnv.valid() || !mDistanceMeasurementCallbacksObj) return;
    ScopedLocalRef<jstring> addr(sCallbackEnv.get(),
                                 bdaddr2newjstr(sCallbackEnv.get(), &address));
    sCallbackEnv->CallVoidMethod(
        mDistanceMeasurementCallbacksObj, method_onDistanceMeasurementResult,
        addr.get(), centimeter, error_centimeter, azimuth_angle,
        error_azimuth_angle, altitude_angle, error_altitude_angle, method);
  }
};

/**
 * Native function definitions
 */
static const bt_interface_t* btIf;

static void initializeNative(JNIEnv* env, jobject object) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);
  if (btIf) return;

  btIf = getBluetoothInterface();
  if (btIf == NULL) {
    log::error("Bluetooth module is not loaded");
    return;
  }

  if (sGattIf != NULL) {
    log::warn("Cleaning up Bluetooth GATT Interface before initializing...");
    sGattIf->cleanup();
    sGattIf = NULL;
  }

  if (mCallbacksObj != NULL) {
    log::warn("Cleaning up Bluetooth GATT callback object");
    env->DeleteGlobalRef(mCallbacksObj);
    mCallbacksObj = NULL;
  }

  sGattIf =
      (btgatt_interface_t*)btIf->get_profile_interface(BT_PROFILE_GATT_ID);
  if (sGattIf == NULL) {
    log::error("Failed to get Bluetooth GATT Interface");
    return;
  }

  bt_status_t status = sGattIf->init(&sGattCallbacks);
  if (status != BT_STATUS_SUCCESS) {
    log::error("Failed to initialize Bluetooth GATT, status: {}",
               bt_status_text(status));
    sGattIf = NULL;
    return;
  }

  sGattIf->advertiser->RegisterCallbacks(
      JniAdvertisingCallbacks::GetInstance());
  sGattIf->distance_measurement_manager->RegisterDistanceMeasurementCallbacks(
      JniDistanceMeasurementCallbacks::GetInstance());

  mCallbacksObj = env->NewGlobalRef(object);
}

static void cleanupNative(JNIEnv* env, jobject /* object */) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);

  if (!btIf) return;

  if (sGattIf != NULL) {
    sGattIf->cleanup();
    sGattIf = NULL;
  }

  if (mCallbacksObj != NULL) {
    env->DeleteGlobalRef(mCallbacksObj);
    mCallbacksObj = NULL;
  }
  btIf = NULL;
}

/**
 * Native Client functions
 */

static int gattClientGetDeviceTypeNative(JNIEnv* env, jobject /* object */,
                                         jstring address) {
  if (!sGattIf) return 0;
  return sGattIf->client->get_device_type(str2addr(env, address));
}

static void gattClientRegisterAppNative(JNIEnv* /* env */, jobject /* object */,
                                        jlong app_uuid_lsb, jlong app_uuid_msb,
                                        jboolean eatt_support) {
  if (!sGattIf) return;
  Uuid uuid = from_java_uuid(app_uuid_msb, app_uuid_lsb);
  sGattIf->client->register_client(uuid, eatt_support);
}

static void gattClientUnregisterAppNative(JNIEnv* /* env */,
                                          jobject /* object */, jint clientIf) {
  if (!sGattIf) return;
  sGattIf->client->unregister_client(clientIf);
}

void btgattc_register_scanner_cb(const Uuid& app_uuid, uint8_t scannerId,
                                 uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mScanCallbacksObj, method_onScannerRegistered,
                               status, scannerId, UUID_PARAMS(app_uuid));
}

static void registerScannerNative(JNIEnv* /* env */, jobject /* object */,
                                  jlong app_uuid_lsb, jlong app_uuid_msb) {
  if (!sScanner) return;

  Uuid uuid = from_java_uuid(app_uuid_msb, app_uuid_lsb);
  sScanner->RegisterScanner(uuid,
                            base::Bind(&btgattc_register_scanner_cb, uuid));
}

static void unregisterScannerNative(JNIEnv* /* env */, jobject /* object */,
                                    jint scanner_id) {
  if (!sScanner) return;

  sScanner->Unregister(scanner_id);
}

static void gattClientScanNative(JNIEnv* /* env */, jobject /* object */,
                                 jboolean start) {
  if (!sScanner) return;
  sScanner->Scan(start);
}

static void gattClientConnectNative(JNIEnv* env, jobject /* object */,
                                    jint clientif, jstring address,
                                    jint addressType, jboolean isDirect,
                                    jint transport, jboolean opportunistic,
                                    jint initiating_phys) {
  if (!sGattIf) return;

  sGattIf->client->connect(clientif, str2addr(env, address), addressType,
                           isDirect, transport, opportunistic, initiating_phys);
}

static void gattClientDisconnectNative(JNIEnv* env, jobject /* object */,
                                       jint clientIf, jstring address,
                                       jint conn_id) {
  if (!sGattIf) return;
  sGattIf->client->disconnect(clientIf, str2addr(env, address), conn_id);
}

static void gattClientSetPreferredPhyNative(JNIEnv* env, jobject /* object */,
                                            jint /* clientIf */,
                                            jstring address, jint tx_phy,
                                            jint rx_phy, jint phy_options) {
  if (!sGattIf) return;
  sGattIf->client->set_preferred_phy(str2addr(env, address), tx_phy, rx_phy,
                                     phy_options);
}

static void readClientPhyCb(uint8_t clientIf, RawAddress bda, uint8_t tx_phy,
                            uint8_t rx_phy, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onClientPhyRead, clientIf,
                               address.get(), tx_phy, rx_phy, status);
}

static void gattClientReadPhyNative(JNIEnv* env, jobject /* object */,
                                    jint clientIf, jstring address) {
  if (!sGattIf) return;

  RawAddress bda = str2addr(env, address);
  sGattIf->client->read_phy(bda, base::Bind(&readClientPhyCb, clientIf, bda));
}

static void gattClientRefreshNative(JNIEnv* env, jobject /* object */,
                                    jint clientIf, jstring address) {
  if (!sGattIf) return;

  sGattIf->client->refresh(clientIf, str2addr(env, address));
}

static void gattClientSearchServiceNative(JNIEnv* /* env */,
                                          jobject /* object */, jint conn_id,
                                          jboolean search_all,
                                          jlong service_uuid_lsb,
                                          jlong service_uuid_msb) {
  if (!sGattIf) return;

  Uuid uuid = from_java_uuid(service_uuid_msb, service_uuid_lsb);
  sGattIf->client->search_service(conn_id, search_all ? 0 : &uuid);
}

static void gattClientDiscoverServiceByUuidNative(JNIEnv* /* env */,
                                                  jobject /* object */,
                                                  jint conn_id,
                                                  jlong service_uuid_lsb,
                                                  jlong service_uuid_msb) {
  if (!sGattIf) return;

  Uuid uuid = from_java_uuid(service_uuid_msb, service_uuid_lsb);
  sGattIf->client->btif_gattc_discover_service_by_uuid(conn_id, uuid);
}

static void gattClientGetGattDbNative(JNIEnv* /* env */, jobject /* object */,
                                      jint conn_id) {
  if (!sGattIf) return;

  sGattIf->client->get_gatt_db(conn_id);
}

static void gattClientReadCharacteristicNative(JNIEnv* /* env */,
                                               jobject /* object */,
                                               jint conn_id, jint handle,
                                               jint authReq) {
  if (!sGattIf) return;

  sGattIf->client->read_characteristic(conn_id, handle, authReq);
}

static void gattClientReadUsingCharacteristicUuidNative(
    JNIEnv* /* env */, jobject /* object */, jint conn_id, jlong uuid_lsb,
    jlong uuid_msb, jint s_handle, jint e_handle, jint authReq) {
  if (!sGattIf) return;

  Uuid uuid = from_java_uuid(uuid_msb, uuid_lsb);
  sGattIf->client->read_using_characteristic_uuid(conn_id, uuid, s_handle,
                                                  e_handle, authReq);
}

static void gattClientReadDescriptorNative(JNIEnv* /* env */,
                                           jobject /* object */, jint conn_id,
                                           jint handle, jint authReq) {
  if (!sGattIf) return;

  sGattIf->client->read_descriptor(conn_id, handle, authReq);
}

static void gattClientWriteCharacteristicNative(JNIEnv* env,
                                                jobject /* object */,
                                                jint conn_id, jint handle,
                                                jint write_type, jint auth_req,
                                                jbyteArray value) {
  if (!sGattIf) return;

  if (value == NULL) {
    log::warn("gattClientWriteCharacteristicNative() ignoring NULL array");
    return;
  }

  uint16_t len = (uint16_t)env->GetArrayLength(value);
  jbyte* p_value = env->GetByteArrayElements(value, NULL);
  if (p_value == NULL) return;

  sGattIf->client->write_characteristic(conn_id, handle, write_type, auth_req,
                                        reinterpret_cast<uint8_t*>(p_value),
                                        len);

  env->ReleaseByteArrayElements(value, p_value, 0);
}

static void gattClientExecuteWriteNative(JNIEnv* /* env */,
                                         jobject /* object */, jint conn_id,
                                         jboolean execute) {
  if (!sGattIf) return;
  sGattIf->client->execute_write(conn_id, execute ? 1 : 0);
}

static void gattClientWriteDescriptorNative(JNIEnv* env, jobject /* object */,
                                            jint conn_id, jint handle,
                                            jint auth_req, jbyteArray value) {
  if (!sGattIf) return;

  if (value == NULL) {
    log::warn("gattClientWriteDescriptorNative() ignoring NULL array");
    return;
  }

  uint16_t len = (uint16_t)env->GetArrayLength(value);
  jbyte* p_value = env->GetByteArrayElements(value, NULL);
  if (p_value == NULL) return;

  sGattIf->client->write_descriptor(conn_id, handle, auth_req,
                                    reinterpret_cast<uint8_t*>(p_value), len);

  env->ReleaseByteArrayElements(value, p_value, 0);
}

static void gattClientRegisterForNotificationsNative(
    JNIEnv* env, jobject /* object */, jint clientIf, jstring address,
    jint handle, jboolean enable) {
  if (!sGattIf) return;

  RawAddress bd_addr = str2addr(env, address);
  if (enable)
    sGattIf->client->register_for_notification(clientIf, bd_addr, handle);
  else
    sGattIf->client->deregister_for_notification(clientIf, bd_addr, handle);
}

static void gattClientReadRemoteRssiNative(JNIEnv* env, jobject /* object */,
                                           jint clientif, jstring address) {
  if (!sGattIf) return;

  sGattIf->client->read_remote_rssi(clientif, str2addr(env, address));
}

void set_scan_params_cmpl_cb(int client_if, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(
      mScanCallbacksObj, method_onScanParamSetupCompleted, status, client_if);
}

static void gattSetScanParametersNative(JNIEnv* /* env */, jobject /* object */,
                                        jint client_if, jint scan_interval_unit,
                                        jint scan_window_unit, jint scan_phy) {
  if (!sScanner) return;
  sScanner->SetScanParameters(client_if, /* use active scan */ 0x01,
                              scan_interval_unit, scan_window_unit, scan_phy,
                              base::Bind(&set_scan_params_cmpl_cb, client_if));
}

void scan_filter_param_cb(uint8_t client_if, uint8_t avbl_space, uint8_t action,
                          uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mScanCallbacksObj,
                               method_onScanFilterParamsConfigured, action,
                               status, client_if, avbl_space);
}

static void gattClientScanFilterParamAddNative(JNIEnv* env,
                                               jobject /* object */,
                                               jobject params) {
  if (!sScanner) return;
  const int add_scan_filter_params_action = 0;
  auto filt_params = std::make_unique<btgatt_filt_param_setup_t>();

  jmethodID methodId = 0;
  ScopedLocalRef<jclass> filtparam(env, env->GetObjectClass(params));

  methodId = env->GetMethodID(filtparam.get(), "getClientIf", "()I");
  uint8_t client_if = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getFiltIndex", "()I");
  uint8_t filt_index = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getFeatSeln", "()I");
  filt_params->feat_seln = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getListLogicType", "()I");
  filt_params->list_logic_type = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getFiltLogicType", "()I");
  filt_params->filt_logic_type = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getDelyMode", "()I");
  filt_params->dely_mode = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getFoundTimeout", "()I");
  filt_params->found_timeout = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getLostTimeout", "()I");
  filt_params->lost_timeout = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getFoundTimeOutCnt", "()I");
  filt_params->found_timeout_cnt = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getNumOfTrackEntries", "()I");
  filt_params->num_of_tracking_entries = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getRSSIHighValue", "()I");
  filt_params->rssi_high_thres = env->CallIntMethod(params, methodId);

  methodId = env->GetMethodID(filtparam.get(), "getRSSILowValue", "()I");
  filt_params->rssi_low_thres = env->CallIntMethod(params, methodId);

  sScanner->ScanFilterParamSetup(client_if, add_scan_filter_params_action,
                                 filt_index, std::move(filt_params),
                                 base::Bind(&scan_filter_param_cb, client_if));
}

static void gattClientScanFilterParamDeleteNative(JNIEnv* /* env */,
                                                  jobject /* object */,
                                                  jint client_if,
                                                  jint filt_index) {
  if (!sScanner) return;
  const int delete_scan_filter_params_action = 1;
  sScanner->ScanFilterParamSetup(client_if, delete_scan_filter_params_action,
                                 filt_index, nullptr,
                                 base::Bind(&scan_filter_param_cb, client_if));
}

static void gattClientScanFilterParamClearAllNative(JNIEnv* /* env */,
                                                    jobject /* object */,
                                                    jint client_if) {
  if (!sScanner) return;
  const int clear_scan_filter_params_action = 2;
  sScanner->ScanFilterParamSetup(client_if, clear_scan_filter_params_action,
                                 0 /* index, unused */, nullptr,
                                 base::Bind(&scan_filter_param_cb, client_if));
}

static void scan_filter_cfg_cb(uint8_t client_if, uint8_t filt_type,
                               uint8_t avbl_space, uint8_t action,
                               uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mScanCallbacksObj, method_onScanFilterConfig,
                               action, status, client_if, filt_type,
                               avbl_space);
}

static void gattClientScanFilterAddNative(JNIEnv* env, jobject /* object */,
                                          jint client_if, jobjectArray filters,
                                          jint filter_index) {
  if (!sScanner) return;

  jmethodID uuidGetMsb;
  jmethodID uuidGetLsb;

  const JNIJavaMethod javaMethods[] = {
      {"getMostSignificantBits", "()J", &uuidGetMsb},
      {"getLeastSignificantBits", "()J", &uuidGetLsb},
  };
  GET_JAVA_METHODS(env, "java/util/UUID", javaMethods);

  std::vector<ApcfCommand> native_filters;

  int numFilters = env->GetArrayLength(filters);
  if (numFilters == 0) {
    sScanner->ScanFilterAdd(filter_index, std::move(native_filters),
                            base::Bind(&scan_filter_cfg_cb, client_if));
    return;
  }

  jclass entryClazz =
      env->GetObjectClass(env->GetObjectArrayElement(filters, 0));

  jfieldID typeFid = env->GetFieldID(entryClazz, "type", "B");
  jfieldID addressFid =
      env->GetFieldID(entryClazz, "address", "Ljava/lang/String;");
  jfieldID addrTypeFid = env->GetFieldID(entryClazz, "addr_type", "B");
  jfieldID irkTypeFid = env->GetFieldID(entryClazz, "irk", "[B");
  jfieldID uuidFid = env->GetFieldID(entryClazz, "uuid", "Ljava/util/UUID;");
  jfieldID uuidMaskFid =
      env->GetFieldID(entryClazz, "uuid_mask", "Ljava/util/UUID;");
  jfieldID nameFid = env->GetFieldID(entryClazz, "name", "Ljava/lang/String;");
  jfieldID companyFid = env->GetFieldID(entryClazz, "company", "I");
  jfieldID companyMaskFid = env->GetFieldID(entryClazz, "company_mask", "I");
  jfieldID adTypeFid = env->GetFieldID(entryClazz, "ad_type", "I");
  jfieldID dataFid = env->GetFieldID(entryClazz, "data", "[B");
  jfieldID dataMaskFid = env->GetFieldID(entryClazz, "data_mask", "[B");
  jfieldID orgFid = env->GetFieldID(entryClazz, "org_id", "I");
  jfieldID TDSFlagsFid = env->GetFieldID(entryClazz, "tds_flags", "I");
  jfieldID TDSFlagsMaskFid = env->GetFieldID(entryClazz, "tds_flags_mask", "I");
  jfieldID metaDataTypeFid = env->GetFieldID(entryClazz, "meta_data_type", "I");
  jfieldID metaDataFid = env->GetFieldID(entryClazz, "meta_data", "[B");

  for (int i = 0; i < numFilters; ++i) {
    ApcfCommand curr{};

    ScopedLocalRef<jobject> current(env,
                                    env->GetObjectArrayElement(filters, i));

    curr.type = env->GetByteField(current.get(), typeFid);

    ScopedLocalRef<jstring> address(
        env, (jstring)env->GetObjectField(current.get(), addressFid));
    if (address.get() != NULL) {
      curr.address = str2addr(env, address.get());
    }

    curr.addr_type = env->GetByteField(current.get(), addrTypeFid);

    ScopedLocalRef<jbyteArray> irkByteArray(
        env, (jbyteArray)env->GetObjectField(current.get(), irkTypeFid));

    if (irkByteArray.get() != nullptr) {
      int len = env->GetArrayLength(irkByteArray.get());
      // IRK is 128 bits or 16 octets, set the bytes or zero it out
      if (len != 16) {
        log::error("Invalid IRK length '{}'; expected 16", len);
        jniThrowIOException(env, EINVAL);
        return;
      }
      jbyte* irkBytes = env->GetByteArrayElements(irkByteArray.get(), NULL);
      if (irkBytes == NULL) {
        jniThrowIOException(env, EINVAL);
        return;
      }
      for (int j = 0; j < len; j++) {
        curr.irk[j] = irkBytes[j];
      }
    }

    ScopedLocalRef<jobject> uuid(env,
                                 env->GetObjectField(current.get(), uuidFid));
    if (uuid.get() != NULL) {
      jlong uuid_msb = env->CallLongMethod(uuid.get(), uuidGetMsb);
      jlong uuid_lsb = env->CallLongMethod(uuid.get(), uuidGetLsb);
      curr.uuid = from_java_uuid(uuid_msb, uuid_lsb);
    }

    ScopedLocalRef<jobject> uuid_mask(
        env, env->GetObjectField(current.get(), uuidMaskFid));
    if (uuid.get() != NULL) {
      jlong uuid_msb = env->CallLongMethod(uuid_mask.get(), uuidGetMsb);
      jlong uuid_lsb = env->CallLongMethod(uuid_mask.get(), uuidGetLsb);
      curr.uuid_mask = from_java_uuid(uuid_msb, uuid_lsb);
    }

    ScopedLocalRef<jstring> name(
        env, (jstring)env->GetObjectField(current.get(), nameFid));
    if (name.get() != NULL) {
      const char* c_name = env->GetStringUTFChars(name.get(), NULL);
      if (c_name != NULL && strlen(c_name) != 0) {
        curr.name = std::vector<uint8_t>(c_name, c_name + strlen(c_name));
        env->ReleaseStringUTFChars(name.get(), c_name);
      }
    }

    curr.company = env->GetIntField(current.get(), companyFid);

    curr.company_mask = env->GetIntField(current.get(), companyMaskFid);

    curr.ad_type = env->GetIntField(current.get(), adTypeFid);

    ScopedLocalRef<jbyteArray> data(
        env, (jbyteArray)env->GetObjectField(current.get(), dataFid));
    if (data.get() != NULL) {
      jbyte* data_array = env->GetByteArrayElements(data.get(), 0);
      int data_len = env->GetArrayLength(data.get());
      if (data_array && data_len) {
        curr.data = std::vector<uint8_t>(data_array, data_array + data_len);
        env->ReleaseByteArrayElements(data.get(), data_array, JNI_ABORT);
      }
    }

    ScopedLocalRef<jbyteArray> data_mask(
        env, (jbyteArray)env->GetObjectField(current.get(), dataMaskFid));
    if (data_mask.get() != NULL) {
      jbyte* data_array = env->GetByteArrayElements(data_mask.get(), 0);
      int data_len = env->GetArrayLength(data_mask.get());
      if (data_array && data_len) {
        curr.data_mask =
            std::vector<uint8_t>(data_array, data_array + data_len);
        env->ReleaseByteArrayElements(data_mask.get(), data_array, JNI_ABORT);
      }
    }
    curr.org_id = env->GetIntField(current.get(), orgFid);
    curr.tds_flags = env->GetIntField(current.get(), TDSFlagsFid);
    curr.tds_flags_mask = env->GetIntField(current.get(), TDSFlagsMaskFid);
    curr.meta_data_type = env->GetIntField(current.get(), metaDataTypeFid);

    ScopedLocalRef<jbyteArray> meta_data(
        env, (jbyteArray)env->GetObjectField(current.get(), metaDataFid));
    if (meta_data.get() != NULL) {
      jbyte* data_array = env->GetByteArrayElements(meta_data.get(), 0);
      int data_len = env->GetArrayLength(meta_data.get());
      if (data_array && data_len) {
        curr.meta_data =
            std::vector<uint8_t>(data_array, data_array + data_len);
        env->ReleaseByteArrayElements(meta_data.get(), data_array, JNI_ABORT);
      }
    }

    native_filters.push_back(curr);
  }

  sScanner->ScanFilterAdd(filter_index, std::move(native_filters),
                          base::Bind(&scan_filter_cfg_cb, client_if));
}

static void gattClientScanFilterClearNative(JNIEnv* /* env */,
                                            jobject /* object */,
                                            jint client_if, jint filt_index) {
  if (!sScanner) return;
  sScanner->ScanFilterClear(filt_index,
                            base::Bind(&scan_filter_cfg_cb, client_if));
}

void scan_enable_cb(uint8_t client_if, uint8_t action, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mScanCallbacksObj,
                               method_onScanFilterEnableDisabled, action,
                               status, client_if);
}

static void gattClientScanFilterEnableNative(JNIEnv* /* env */,
                                             jobject /* object */,
                                             jint client_if, jboolean enable) {
  if (!sScanner) return;
  sScanner->ScanFilterEnable(enable, base::Bind(&scan_enable_cb, client_if));
}

static void gattClientConfigureMTUNative(JNIEnv* /* env */,
                                         jobject /* object */, jint conn_id,
                                         jint mtu) {
  if (!sGattIf) return;
  sGattIf->client->configure_mtu(conn_id, mtu);
}

static void gattConnectionParameterUpdateNative(
    JNIEnv* env, jobject /* object */, jint /* client_if */, jstring address,
    jint min_interval, jint max_interval, jint latency, jint timeout,
    jint min_ce_len, jint max_ce_len) {
  if (!sGattIf) return;
  sGattIf->client->conn_parameter_update(
      str2addr(env, address), min_interval, max_interval, latency, timeout,
      (uint16_t)min_ce_len, (uint16_t)max_ce_len);
}

static void gattSubrateRequestNative(JNIEnv* env, jobject /* object */,
                                     jint /* client_if */, jstring address,
                                     jint subrate_min, jint subrate_max,
                                     jint max_latency, jint cont_num,
                                     jint sup_timeout) {
  if (!sGattIf) return;
  sGattIf->client->subrate_request(str2addr(env, address), subrate_min,
                                   subrate_max, max_latency, cont_num,
                                   sup_timeout);
}

void batchscan_cfg_storage_cb(uint8_t client_if, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mScanCallbacksObj,
                               method_onBatchScanStorageConfigured, status,
                               client_if);
}

static void gattClientConfigBatchScanStorageNative(
    JNIEnv* /* env */, jobject /* object */, jint client_if,
    jint max_full_reports_percent, jint max_trunc_reports_percent,
    jint notify_threshold_level_percent) {
  if (!sScanner) return;
  sScanner->BatchscanConfigStorage(
      client_if, max_full_reports_percent, max_trunc_reports_percent,
      notify_threshold_level_percent,
      base::Bind(&batchscan_cfg_storage_cb, client_if));
}

void batchscan_enable_cb(uint8_t client_if, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mScanCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mScanCallbacksObj,
                               method_onBatchScanStartStopped, 0 /* unused */,
                               status, client_if);
}

static void gattClientStartBatchScanNative(JNIEnv* /* env */,
                                           jobject /* object */, jint client_if,
                                           jint scan_mode,
                                           jint scan_interval_unit,
                                           jint scan_window_unit,
                                           jint addr_type, jint discard_rule) {
  if (!sScanner) return;
  sScanner->BatchscanEnable(scan_mode, scan_interval_unit, scan_window_unit,
                            addr_type, discard_rule,
                            base::Bind(&batchscan_enable_cb, client_if));
}

static void gattClientStopBatchScanNative(JNIEnv* /* env */,
                                          jobject /* object */,
                                          jint client_if) {
  if (!sScanner) return;
  sScanner->BatchscanDisable(base::Bind(&batchscan_enable_cb, client_if));
}

static void gattClientReadScanReportsNative(JNIEnv* /* env */,
                                            jobject /* object */,
                                            jint client_if, jint scan_type) {
  if (!sScanner) return;
  sScanner->BatchscanReadReports(client_if, scan_type);
}

/**
 * Native server functions
 */

static void gattServerRegisterAppNative(JNIEnv* /* env */, jobject /* object */,
                                        jlong app_uuid_lsb, jlong app_uuid_msb,
                                        jboolean eatt_support) {
  if (!sGattIf) return;
  Uuid uuid = from_java_uuid(app_uuid_msb, app_uuid_lsb);
  sGattIf->server->register_server(uuid, eatt_support);
}

static void gattServerUnregisterAppNative(JNIEnv* /* env */,
                                          jobject /* object */, jint serverIf) {
  if (!sGattIf) return;
  bluetooth::gatt::close_server(serverIf);
  sGattIf->server->unregister_server(serverIf);
}

static void gattServerConnectNative(JNIEnv* env, jobject /* object */,
                                    jint server_if, jstring address,
                                    jint addr_type, jboolean is_direct,
                                    jint transport) {
  if (!sGattIf) return;

  RawAddress bd_addr = str2addr(env, address);
  sGattIf->server->connect(server_if, bd_addr, addr_type, is_direct, transport);
}

static void gattServerDisconnectNative(JNIEnv* env, jobject /* object */,
                                       jint serverIf, jstring address,
                                       jint conn_id) {
  if (!sGattIf) return;
  sGattIf->server->disconnect(serverIf, str2addr(env, address), conn_id);
}

static void gattServerSetPreferredPhyNative(JNIEnv* env, jobject /* object */,
                                            jint /* serverIf */,
                                            jstring address, jint tx_phy,
                                            jint rx_phy, jint phy_options) {
  if (!sGattIf) return;
  RawAddress bda = str2addr(env, address);
  sGattIf->server->set_preferred_phy(bda, tx_phy, rx_phy, phy_options);
}

static void readServerPhyCb(uint8_t serverIf, RawAddress bda, uint8_t tx_phy,
                            uint8_t rx_phy, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mCallbacksObj) return;

  ScopedLocalRef<jstring> address(sCallbackEnv.get(),
                                  bdaddr2newjstr(sCallbackEnv.get(), &bda));

  sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onServerPhyRead, serverIf,
                               address.get(), tx_phy, rx_phy, status);
}

static void gattServerReadPhyNative(JNIEnv* env, jobject /* object */,
                                    jint serverIf, jstring address) {
  if (!sGattIf) return;

  RawAddress bda = str2addr(env, address);
  sGattIf->server->read_phy(bda, base::Bind(&readServerPhyCb, serverIf, bda));
}

static void gattServerAddServiceNative(JNIEnv* env, jobject /* object */,
                                       jint server_if,
                                       jobject gatt_db_elements) {
  if (!sGattIf) return;

  jmethodID arrayGet;
  jmethodID arraySize;

  const JNIJavaMethod javaListMethods[] = {
      {"get", "(I)Ljava/lang/Object;", &arrayGet},
      {"size", "()I", &arraySize},
  };
  GET_JAVA_METHODS(env, "java/util/List", javaListMethods);

  int count = env->CallIntMethod(gatt_db_elements, arraySize);
  std::vector<btgatt_db_element_t> db;

  jmethodID uuidGetMsb;
  jmethodID uuidGetLsb;

  const JNIJavaMethod javaUuidMethods[] = {
      {"getMostSignificantBits", "()J", &uuidGetMsb},
      {"getLeastSignificantBits", "()J", &uuidGetLsb},
  };
  GET_JAVA_METHODS(env, "java/util/UUID", javaUuidMethods);

  jobject objectForClass =
      env->CallObjectMethod(mCallbacksObj, method_getSampleGattDbElement);
  jclass gattDbElementClazz = env->GetObjectClass(objectForClass);

  for (int i = 0; i < count; i++) {
    btgatt_db_element_t curr;

    jint index = i;
    ScopedLocalRef<jobject> element(
        env, env->CallObjectMethod(gatt_db_elements, arrayGet, index));

    jfieldID fid;

    fid = env->GetFieldID(gattDbElementClazz, "id", "I");
    curr.id = env->GetIntField(element.get(), fid);

    fid = env->GetFieldID(gattDbElementClazz, "uuid", "Ljava/util/UUID;");
    ScopedLocalRef<jobject> uuid(env, env->GetObjectField(element.get(), fid));
    if (uuid.get() != NULL) {
      jlong uuid_msb = env->CallLongMethod(uuid.get(), uuidGetMsb);
      jlong uuid_lsb = env->CallLongMethod(uuid.get(), uuidGetLsb);
      curr.uuid = from_java_uuid(uuid_msb, uuid_lsb);
    }

    fid = env->GetFieldID(gattDbElementClazz, "type", "I");
    curr.type =
        (bt_gatt_db_attribute_type_t)env->GetIntField(element.get(), fid);

    fid = env->GetFieldID(gattDbElementClazz, "attributeHandle", "I");
    curr.attribute_handle = env->GetIntField(element.get(), fid);

    fid = env->GetFieldID(gattDbElementClazz, "startHandle", "I");
    curr.start_handle = env->GetIntField(element.get(), fid);

    fid = env->GetFieldID(gattDbElementClazz, "endHandle", "I");
    curr.end_handle = env->GetIntField(element.get(), fid);

    fid = env->GetFieldID(gattDbElementClazz, "properties", "I");
    curr.properties = env->GetIntField(element.get(), fid);

    fid = env->GetFieldID(gattDbElementClazz, "permissions", "I");
    curr.permissions = env->GetIntField(element.get(), fid);

    db.push_back(curr);
  }

  sGattIf->server->add_service(server_if, db.data(), db.size());
}

static void gattServerStopServiceNative(JNIEnv* /* env */, jobject /* object */,
                                        jint server_if, jint svc_handle) {
  if (!sGattIf) return;
  sGattIf->server->stop_service(server_if, svc_handle);
}

static void gattServerDeleteServiceNative(JNIEnv* /* env */,
                                          jobject /* object */, jint server_if,
                                          jint svc_handle) {
  if (!sGattIf) return;
  sGattIf->server->delete_service(server_if, svc_handle);
}

static void gattServerSendIndicationNative(JNIEnv* env, jobject /* object */,
                                           jint server_if, jint attr_handle,
                                           jint conn_id, jbyteArray val) {
  if (!sGattIf) return;

  jbyte* array = env->GetByteArrayElements(val, 0);
  int val_len = env->GetArrayLength(val);

  if (bluetooth::gatt::is_connection_isolated(conn_id)) {
    auto data = ::rust::Slice<const uint8_t>((uint8_t*)array, val_len);
    bluetooth::gatt::send_indication(server_if, attr_handle, conn_id, data);
  } else {
    sGattIf->server->send_indication(server_if, attr_handle, conn_id,
                                     /*confirm*/ 1, (uint8_t*)array, val_len);
  }

  env->ReleaseByteArrayElements(val, array, JNI_ABORT);
}

static void gattServerSendNotificationNative(JNIEnv* env, jobject /* object */,
                                             jint server_if, jint attr_handle,
                                             jint conn_id, jbyteArray val) {
  if (!sGattIf) return;

  jbyte* array = env->GetByteArrayElements(val, 0);
  int val_len = env->GetArrayLength(val);

  sGattIf->server->send_indication(server_if, attr_handle, conn_id,
                                   /*confirm*/ 0, (uint8_t*)array, val_len);

  env->ReleaseByteArrayElements(val, array, JNI_ABORT);
}

static void gattServerSendResponseNative(JNIEnv* env, jobject /* object */,
                                         jint server_if, jint conn_id,
                                         jint trans_id, jint status,
                                         jint handle, jint offset,
                                         jbyteArray val, jint auth_req) {
  if (!sGattIf) return;

  btgatt_response_t response;

  response.attr_value.handle = handle;
  response.attr_value.auth_req = auth_req;
  response.attr_value.offset = offset;
  response.attr_value.len = 0;

  if (val != NULL) {
    if (env->GetArrayLength(val) < GATT_MAX_ATTR_LEN) {
      response.attr_value.len = (uint16_t)env->GetArrayLength(val);
    } else {
      response.attr_value.len = GATT_MAX_ATTR_LEN;
    }

    jbyte* array = env->GetByteArrayElements(val, 0);

    for (int i = 0; i != response.attr_value.len; ++i)
      response.attr_value.value[i] = (uint8_t)array[i];
    env->ReleaseByteArrayElements(val, array, JNI_ABORT);
  }

  if (bluetooth::gatt::is_connection_isolated(conn_id)) {
    auto data = ::rust::Slice<const uint8_t>(response.attr_value.value,
                                             response.attr_value.len);
    bluetooth::gatt::send_response(server_if, conn_id, trans_id, status, data);
  } else {
    sGattIf->server->send_response(conn_id, trans_id, status, response);
  }
}

static void advertiseInitializeNative(JNIEnv* env, jobject object) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);
  if (mAdvertiseCallbacksObj != NULL) {
    log::warn("Cleaning up Advertise callback object");
    env->DeleteGlobalRef(mAdvertiseCallbacksObj);
    mAdvertiseCallbacksObj = NULL;
  }

  mAdvertiseCallbacksObj = env->NewGlobalRef(object);
}

static void advertiseCleanupNative(JNIEnv* env, jobject /* object */) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);
  if (mAdvertiseCallbacksObj != NULL) {
    env->DeleteGlobalRef(mAdvertiseCallbacksObj);
    mAdvertiseCallbacksObj = NULL;
  }
}

static uint32_t INTERVAL_MAX = 0xFFFFFF;
// Always give controller 31.25ms difference between min and max
static uint32_t INTERVAL_DELTA = 50;

static AdvertiseParameters parseParams(JNIEnv* env, jobject i) {
  AdvertiseParameters p;

  jclass clazz = env->GetObjectClass(i);
  jmethodID methodId;

  methodId = env->GetMethodID(clazz, "isConnectable", "()Z");
  jboolean isConnectable = env->CallBooleanMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "isDiscoverable", "()Z");
  jboolean isDiscoverable = env->CallBooleanMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "isScannable", "()Z");
  jboolean isScannable = env->CallBooleanMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "isLegacy", "()Z");
  jboolean isLegacy = env->CallBooleanMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "isAnonymous", "()Z");
  jboolean isAnonymous = env->CallBooleanMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "includeTxPower", "()Z");
  jboolean includeTxPower = env->CallBooleanMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "getPrimaryPhy", "()I");
  uint8_t primaryPhy = env->CallIntMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "getSecondaryPhy", "()I");
  uint8_t secondaryPhy = env->CallIntMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "getInterval", "()I");
  uint32_t interval = env->CallIntMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "getTxPowerLevel", "()I");
  int8_t txPowerLevel = env->CallIntMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "getOwnAddressType", "()I");
  int8_t ownAddressType = env->CallIntMethod(i, methodId);

  uint16_t props = 0;
  if (isConnectable) props |= 0x01;
  if (isScannable) props |= 0x02;
  if (isDiscoverable) props |= 0x04;
  if (isLegacy) props |= 0x10;
  if (isAnonymous) props |= 0x20;
  if (includeTxPower) props |= 0x40;

  if (interval > INTERVAL_MAX - INTERVAL_DELTA) {
    interval = INTERVAL_MAX - INTERVAL_DELTA;
  }

  p.advertising_event_properties = props;
  p.min_interval = interval;
  p.max_interval = interval + INTERVAL_DELTA;
  p.channel_map = 0x07; /* all channels */
  p.tx_power = txPowerLevel;
  p.primary_advertising_phy = primaryPhy;
  p.secondary_advertising_phy = secondaryPhy;
  p.scan_request_notification_enable = false;
  p.own_address_type = ownAddressType;
  return p;
}

static PeriodicAdvertisingParameters parsePeriodicParams(JNIEnv* env,
                                                         jobject i) {
  PeriodicAdvertisingParameters p;

  if (i == NULL) {
    p.enable = false;
    return p;
  }

  jclass clazz = env->GetObjectClass(i);
  jmethodID methodId;

  methodId = env->GetMethodID(clazz, "getIncludeTxPower", "()Z");
  jboolean includeTxPower = env->CallBooleanMethod(i, methodId);
  methodId = env->GetMethodID(clazz, "getInterval", "()I");
  uint16_t interval = env->CallIntMethod(i, methodId);

  p.enable = true;
  p.include_adi = true;
  p.min_interval = interval;
  p.max_interval = interval + 16; /* 20ms difference betwen min and max */
  uint16_t props = 0;
  if (includeTxPower) props |= 0x40;
  p.periodic_advertising_properties = props;
  return p;
}

static void ble_advertising_set_started_cb(int reg_id, int server_if,
                                           uint8_t advertiser_id,
                                           int8_t tx_power, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mAdvertiseCallbacksObj) return;

  // tie advertiser ID to server_if, once the advertisement has started
  if (status == 0 /* AdvertisingCallback::AdvertisingStatus::SUCCESS */ &&
      server_if != 0) {
    bluetooth::gatt::associate_server_with_advertiser(server_if, advertiser_id);
  }

  sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                               method_onAdvertisingSetStarted, reg_id,
                               advertiser_id, tx_power, status);
}

static void ble_advertising_set_timeout_cb(uint8_t advertiser_id,
                                           uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mAdvertiseCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                               method_onAdvertisingEnabled, advertiser_id,
                               false, status);
}

static void startAdvertisingSetNative(
    JNIEnv* env, jobject /* object */, jobject parameters, jbyteArray adv_data,
    jbyteArray scan_resp, jobject periodic_parameters, jbyteArray periodic_data,
    jint duration, jint maxExtAdvEvents, jint reg_id, jint server_if) {
  if (!sGattIf) return;

  jbyte* scan_resp_data = env->GetByteArrayElements(scan_resp, NULL);
  uint16_t scan_resp_len = (uint16_t)env->GetArrayLength(scan_resp);
  std::vector<uint8_t> scan_resp_vec(scan_resp_data,
                                     scan_resp_data + scan_resp_len);
  env->ReleaseByteArrayElements(scan_resp, scan_resp_data, JNI_ABORT);

  AdvertiseParameters params = parseParams(env, parameters);
  PeriodicAdvertisingParameters periodicParams =
      parsePeriodicParams(env, periodic_parameters);

  jbyte* adv_data_data = env->GetByteArrayElements(adv_data, NULL);
  uint16_t adv_data_len = (uint16_t)env->GetArrayLength(adv_data);
  std::vector<uint8_t> data_vec(adv_data_data, adv_data_data + adv_data_len);
  env->ReleaseByteArrayElements(adv_data, adv_data_data, JNI_ABORT);

  jbyte* periodic_data_data = env->GetByteArrayElements(periodic_data, NULL);
  uint16_t periodic_data_len = (uint16_t)env->GetArrayLength(periodic_data);
  std::vector<uint8_t> periodic_data_vec(
      periodic_data_data, periodic_data_data + periodic_data_len);
  env->ReleaseByteArrayElements(periodic_data, periodic_data_data, JNI_ABORT);

  sGattIf->advertiser->StartAdvertisingSet(
      kAdvertiserClientIdJni, reg_id,
      base::Bind(&ble_advertising_set_started_cb, reg_id, server_if), params,
      data_vec, scan_resp_vec, periodicParams, periodic_data_vec, duration,
      maxExtAdvEvents, base::Bind(ble_advertising_set_timeout_cb));
}

static void stopAdvertisingSetNative(JNIEnv* /* env */, jobject /* object */,
                                     jint advertiser_id) {
  if (!sGattIf) return;

  bluetooth::gatt::clear_advertiser(advertiser_id);

  sGattIf->advertiser->Unregister(advertiser_id);
}

static void getOwnAddressCb(uint8_t advertiser_id, uint8_t address_type,
                            RawAddress address) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mAdvertiseCallbacksObj) return;

  ScopedLocalRef<jstring> addr(sCallbackEnv.get(),
                               bdaddr2newjstr(sCallbackEnv.get(), &address));
  sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj, method_onOwnAddressRead,
                               advertiser_id, address_type, addr.get());
}

static void getOwnAddressNative(JNIEnv* /* env */, jobject /* object */,
                                jint advertiser_id) {
  if (!sGattIf) return;
  sGattIf->advertiser->GetOwnAddress(
      advertiser_id, base::Bind(&getOwnAddressCb, advertiser_id));
}

static void callJniCallback(jmethodID method, uint8_t advertiser_id,
                            uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mAdvertiseCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj, method, advertiser_id,
                               status);
}

static void enableSetCb(uint8_t advertiser_id, bool enable, uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mAdvertiseCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                               method_onAdvertisingEnabled, advertiser_id,
                               enable, status);
}

static void enableAdvertisingSetNative(JNIEnv* /* env */, jobject /* object */,
                                       jint advertiser_id, jboolean enable,
                                       jint duration, jint maxExtAdvEvents) {
  if (!sGattIf) return;

  sGattIf->advertiser->Enable(advertiser_id, enable,
                              base::Bind(&enableSetCb, advertiser_id, enable),
                              duration, maxExtAdvEvents,
                              base::Bind(&enableSetCb, advertiser_id, false));
}

static void setAdvertisingDataNative(JNIEnv* env, jobject /* object */,
                                     jint advertiser_id, jbyteArray data) {
  if (!sGattIf) return;

  sGattIf->advertiser->SetData(
      advertiser_id, false, toVector(env, data),
      base::Bind(&callJniCallback, method_onAdvertisingDataSet, advertiser_id));
}

static void setScanResponseDataNative(JNIEnv* env, jobject /* object */,
                                      jint advertiser_id, jbyteArray data) {
  if (!sGattIf) return;

  sGattIf->advertiser->SetData(
      advertiser_id, true, toVector(env, data),
      base::Bind(&callJniCallback, method_onScanResponseDataSet,
                 advertiser_id));
}

static void setAdvertisingParametersNativeCb(uint8_t advertiser_id,
                                             uint8_t status, int8_t tx_power) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mAdvertiseCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                               method_onAdvertisingParametersUpdated,
                               advertiser_id, tx_power, status);
}

static void setAdvertisingParametersNative(JNIEnv* env, jobject /* object */,
                                           jint advertiser_id,
                                           jobject parameters) {
  if (!sGattIf) return;

  AdvertiseParameters params = parseParams(env, parameters);
  sGattIf->advertiser->SetParameters(
      advertiser_id, params,
      base::Bind(&setAdvertisingParametersNativeCb, advertiser_id));
}

static void setPeriodicAdvertisingParametersNative(
    JNIEnv* env, jobject /* object */, jint advertiser_id,
    jobject periodic_parameters) {
  if (!sGattIf) return;

  PeriodicAdvertisingParameters periodicParams =
      parsePeriodicParams(env, periodic_parameters);
  sGattIf->advertiser->SetPeriodicAdvertisingParameters(
      advertiser_id, periodicParams,
      base::Bind(&callJniCallback,
                 method_onPeriodicAdvertisingParametersUpdated, advertiser_id));
}

static void setPeriodicAdvertisingDataNative(JNIEnv* env, jobject /* object */,
                                             jint advertiser_id,
                                             jbyteArray data) {
  if (!sGattIf) return;

  sGattIf->advertiser->SetPeriodicAdvertisingData(
      advertiser_id, toVector(env, data),
      base::Bind(&callJniCallback, method_onPeriodicAdvertisingDataSet,
                 advertiser_id));
}

static void enablePeriodicSetCb(uint8_t advertiser_id, bool enable,
                                uint8_t status) {
  std::shared_lock<std::shared_mutex> lock(callbacks_mutex);
  CallbackEnv sCallbackEnv(__func__);
  if (!sCallbackEnv.valid() || !mAdvertiseCallbacksObj) return;
  sCallbackEnv->CallVoidMethod(mAdvertiseCallbacksObj,
                               method_onPeriodicAdvertisingEnabled,
                               advertiser_id, enable, status);
}

static void setPeriodicAdvertisingEnableNative(JNIEnv* /* env */,
                                               jobject /* object */,
                                               jint advertiser_id,
                                               jboolean enable) {
  if (!sGattIf) return;

  sGattIf->advertiser->SetPeriodicAdvertisingEnable(
      advertiser_id, enable, true /*include_adi*/,
      base::Bind(&enablePeriodicSetCb, advertiser_id, enable));
}

static void periodicScanInitializeNative(JNIEnv* env, jobject object) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);
  if (mPeriodicScanCallbacksObj != NULL) {
    log::warn("Cleaning up periodic scan callback object");
    env->DeleteGlobalRef(mPeriodicScanCallbacksObj);
    mPeriodicScanCallbacksObj = NULL;
  }

  mPeriodicScanCallbacksObj = env->NewGlobalRef(object);
}

static void periodicScanCleanupNative(JNIEnv* env, jobject /* object */) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);
  if (mPeriodicScanCallbacksObj != NULL) {
    env->DeleteGlobalRef(mPeriodicScanCallbacksObj);
    mPeriodicScanCallbacksObj = NULL;
  }
}

static void scanInitializeNative(JNIEnv* env, jobject object) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);

  sScanner = bluetooth::shim::get_ble_scanner_instance();
  sScanner->RegisterCallbacks(JniScanningCallbacks::GetInstance());

  if (mScanCallbacksObj != NULL) {
    log::warn("Cleaning up scan callback object");
    env->DeleteGlobalRef(mScanCallbacksObj);
    mScanCallbacksObj = NULL;
  }

  mScanCallbacksObj = env->NewGlobalRef(object);
}

static void scanCleanupNative(JNIEnv* env, jobject /* object */) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);
  if (mScanCallbacksObj != NULL) {
    env->DeleteGlobalRef(mScanCallbacksObj);
    mScanCallbacksObj = NULL;
  }
  if (sScanner != NULL) {
    sScanner = NULL;
  }
}

static void startSyncNative(JNIEnv* env, jobject /* object */, jint sid,
                            jstring address, jint skip, jint timeout,
                            jint reg_id) {
  if (!sScanner) return;
  sScanner->StartSync(sid, str2addr(env, address), skip, timeout, reg_id);
}

static void stopSyncNative(JNIEnv* /* env */, jobject /* object */,
                           jint sync_handle) {
  if (!sScanner) return;
  sScanner->StopSync(sync_handle);
}

static void cancelSyncNative(JNIEnv* env, jobject /* object */, jint sid,
                             jstring address) {
  if (!sScanner) return;
  sScanner->CancelCreateSync(sid, str2addr(env, address));
}

static void syncTransferNative(JNIEnv* env, jobject /* object */,
                               jint pa_source, jstring addr, jint service_data,
                               jint sync_handle) {
  if (!sScanner) return;
  sScanner->TransferSync(str2addr(env, addr), service_data, sync_handle,
                         pa_source);
}

static void transferSetInfoNative(JNIEnv* env, jobject /* object */,
                                  jint pa_source, jstring addr,
                                  jint service_data, jint adv_handle) {
  if (!sScanner) return;
  sScanner->TransferSetInfo(str2addr(env, addr), service_data, adv_handle,
                            pa_source);
}

static void gattTestNative(JNIEnv* env, jobject /* object */, jint command,
                           jlong uuid1_lsb, jlong uuid1_msb, jstring bda1,
                           jint p1, jint p2, jint p3, jint p4, jint p5) {
  if (!sGattIf) return;

  RawAddress bt_bda1 = str2addr(env, bda1);

  Uuid uuid1 = from_java_uuid(uuid1_msb, uuid1_lsb);

  btgatt_test_params_t params;
  params.bda1 = &bt_bda1;
  params.uuid1 = &uuid1;
  params.u1 = p1;
  params.u2 = p2;
  params.u3 = p3;
  params.u4 = p4;
  params.u5 = p5;
  sGattIf->client->test_command(command, params);
}

static void distanceMeasurementInitializeNative(JNIEnv* env, jobject object) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);
  if (mDistanceMeasurementCallbacksObj != NULL) {
    log::warn("Cleaning up Advertise callback object");
    env->DeleteGlobalRef(mDistanceMeasurementCallbacksObj);
    mDistanceMeasurementCallbacksObj = NULL;
  }

  mDistanceMeasurementCallbacksObj = env->NewGlobalRef(object);
}

static void distanceMeasurementCleanupNative(JNIEnv* env,
                                             jobject /* object */) {
  std::unique_lock<std::shared_mutex> lock(callbacks_mutex);
  if (mDistanceMeasurementCallbacksObj != NULL) {
    env->DeleteGlobalRef(mDistanceMeasurementCallbacksObj);
    mDistanceMeasurementCallbacksObj = NULL;
  }
}

static void startDistanceMeasurementNative(JNIEnv* env, jobject /* object */,
                                           jstring address, jint interval,
                                           jint method) {
  if (!sGattIf) return;
  sGattIf->distance_measurement_manager->StartDistanceMeasurement(
      str2addr(env, address), interval, method);
}

static void stopDistanceMeasurementNative(JNIEnv* env, jobject /* object */,
                                          jstring address, jint method) {
  if (!sGattIf) return;
  sGattIf->distance_measurement_manager->StopDistanceMeasurement(
      str2addr(env, address), method);
}

/**
 * JNI function definitions
 */

// JNI functions defined in ScanNativeInterface class.
static int register_com_android_bluetooth_gatt_scan(JNIEnv* env) {
  const JNINativeMethod methods[] = {
      {"initializeNative", "()V", (void*)scanInitializeNative},
      {"cleanupNative", "()V", (void*)scanCleanupNative},
      {"registerScannerNative", "(JJ)V", (void*)registerScannerNative},
      {"unregisterScannerNative", "(I)V", (void*)unregisterScannerNative},
      {"gattClientScanNative", "(Z)V", (void*)gattClientScanNative},
      // Batch scan JNI functions.
      {"gattClientConfigBatchScanStorageNative", "(IIII)V",
       (void*)gattClientConfigBatchScanStorageNative},
      {"gattClientStartBatchScanNative", "(IIIIII)V",
       (void*)gattClientStartBatchScanNative},
      {"gattClientStopBatchScanNative", "(I)V",
       (void*)gattClientStopBatchScanNative},
      {"gattClientReadScanReportsNative", "(II)V",
       (void*)gattClientReadScanReportsNative},
      // Scan filter JNI functions.
      {"gattClientScanFilterParamAddNative",
       "(Lcom/android/bluetooth/gatt/FilterParams;)V",
       (void*)gattClientScanFilterParamAddNative},
      {"gattClientScanFilterParamDeleteNative", "(II)V",
       (void*)gattClientScanFilterParamDeleteNative},
      {"gattClientScanFilterParamClearAllNative", "(I)V",
       (void*)gattClientScanFilterParamClearAllNative},
      {"gattClientScanFilterAddNative",
       "(I[Lcom/android/bluetooth/le_scan/ScanFilterQueue$Entry;I)V",
       (void*)gattClientScanFilterAddNative},
      {"gattClientScanFilterClearNative", "(II)V",
       (void*)gattClientScanFilterClearNative},
      {"gattClientScanFilterEnableNative", "(IZ)V",
       (void*)gattClientScanFilterEnableNative},
      {"gattSetScanParametersNative", "(IIII)V",
       (void*)gattSetScanParametersNative},
  };
  const int result = REGISTER_NATIVE_METHODS(
      env, "com/android/bluetooth/le_scan/ScanNativeInterface", methods);
  if (result != 0) {
    return result;
  }

  const JNIJavaMethod javaMethods[] = {
      // Client callbacks
      {"onScannerRegistered", "(IIJJ)V", &method_onScannerRegistered},
      {"onScanResult", "(IILjava/lang/String;IIIIII[BLjava/lang/String;)V",
       &method_onScanResult},
      {"onScanFilterConfig", "(IIIII)V", &method_onScanFilterConfig},
      {"onScanFilterParamsConfigured", "(IIII)V",
       &method_onScanFilterParamsConfigured},
      {"onScanFilterEnableDisabled", "(III)V",
       &method_onScanFilterEnableDisabled},
      {"onBatchScanStorageConfigured", "(II)V",
       &method_onBatchScanStorageConfigured},
      {"onBatchScanStartStopped", "(III)V", &method_onBatchScanStartStopped},
      {"onBatchScanReports", "(IIII[B)V", &method_onBatchScanReports},
      {"onBatchScanThresholdCrossed", "(I)V",
       &method_onBatchScanThresholdCrossed},
      {"createOnTrackAdvFoundLostObject",
       "(II[BI[BIIILjava/lang/String;IIII)"
       "Lcom/android/bluetooth/le_scan/AdvtFilterOnFoundOnLostInfo;",
       &method_createOnTrackAdvFoundLostObject},
      {"onTrackAdvFoundLost",
       "(Lcom/android/bluetooth/le_scan/AdvtFilterOnFoundOnLostInfo;)V",
       &method_onTrackAdvFoundLost},
      {"onScanParamSetupCompleted", "(II)V", &method_onScanParamSetupCompleted},
  };
  GET_JAVA_METHODS(env, "com/android/bluetooth/le_scan/ScanNativeInterface",
                   javaMethods);
  return 0;
}

// JNI functions defined in AdvertiseManagerNativeInterface class.
static int register_com_android_bluetooth_gatt_advertise_manager(JNIEnv* env) {
  const JNINativeMethod methods[] = {
      {"initializeNative", "()V", (void*)advertiseInitializeNative},
      {"cleanupNative", "()V", (void*)advertiseCleanupNative},
      {"startAdvertisingSetNative",
       "(Landroid/bluetooth/le/AdvertisingSetParameters;"
       "[B[BLandroid/bluetooth/le/PeriodicAdvertisingParameters;[BIIII)V",
       (void*)startAdvertisingSetNative},
      {"stopAdvertisingSetNative", "(I)V", (void*)stopAdvertisingSetNative},
      {"getOwnAddressNative", "(I)V", (void*)getOwnAddressNative},
      {"enableAdvertisingSetNative", "(IZII)V",
       (void*)enableAdvertisingSetNative},
      {"setAdvertisingDataNative", "(I[B)V", (void*)setAdvertisingDataNative},
      {"setScanResponseDataNative", "(I[B)V", (void*)setScanResponseDataNative},
      {"setAdvertisingParametersNative",
       "(ILandroid/bluetooth/le/AdvertisingSetParameters;)V",
       (void*)setAdvertisingParametersNative},
      {"setPeriodicAdvertisingParametersNative",
       "(ILandroid/bluetooth/le/PeriodicAdvertisingParameters;)V",
       (void*)setPeriodicAdvertisingParametersNative},
      {"setPeriodicAdvertisingDataNative", "(I[B)V",
       (void*)setPeriodicAdvertisingDataNative},
      {"setPeriodicAdvertisingEnableNative", "(IZ)V",
       (void*)setPeriodicAdvertisingEnableNative},
  };
  const int result = REGISTER_NATIVE_METHODS(
      env, "com/android/bluetooth/gatt/AdvertiseManagerNativeInterface",
      methods);
  if (result != 0) {
    return result;
  }

  const JNIJavaMethod javaMethods[] = {
      {"onAdvertisingSetStarted", "(IIII)V", &method_onAdvertisingSetStarted},
      {"onOwnAddressRead", "(IILjava/lang/String;)V", &method_onOwnAddressRead},
      {"onAdvertisingEnabled", "(IZI)V", &method_onAdvertisingEnabled},
      {"onAdvertisingDataSet", "(II)V", &method_onAdvertisingDataSet},
      {"onScanResponseDataSet", "(II)V", &method_onScanResponseDataSet},
      {"onAdvertisingParametersUpdated", "(III)V",
       &method_onAdvertisingParametersUpdated},
      {"onPeriodicAdvertisingParametersUpdated", "(II)V",
       &method_onPeriodicAdvertisingParametersUpdated},
      {"onPeriodicAdvertisingDataSet", "(II)V",
       &method_onPeriodicAdvertisingDataSet},
      {"onPeriodicAdvertisingEnabled", "(IZI)V",
       &method_onPeriodicAdvertisingEnabled},
  };
  GET_JAVA_METHODS(env,
                   "com/android/bluetooth/gatt/AdvertiseManagerNativeInterface",
                   javaMethods);
  return 0;
}

// JNI functions defined in PeriodicScanNativeInterface class.
static int register_com_android_bluetooth_gatt_periodic_scan(JNIEnv* env) {
  const JNINativeMethod methods[] = {
      {"initializeNative", "()V", (void*)periodicScanInitializeNative},
      {"cleanupNative", "()V", (void*)periodicScanCleanupNative},
      {"startSyncNative", "(ILjava/lang/String;III)V", (void*)startSyncNative},
      {"stopSyncNative", "(I)V", (void*)stopSyncNative},
      {"cancelSyncNative", "(ILjava/lang/String;)V", (void*)cancelSyncNative},
      {"syncTransferNative", "(ILjava/lang/String;II)V",
       (void*)syncTransferNative},
      {"transferSetInfoNative", "(ILjava/lang/String;II)V",
       (void*)transferSetInfoNative},
  };
  const int result = REGISTER_NATIVE_METHODS(
      env, "com/android/bluetooth/le_scan/PeriodicScanNativeInterface",
      methods);
  if (result != 0) {
    return result;
  }

  const JNIJavaMethod javaMethods[] = {
      {"onSyncStarted", "(IIIILjava/lang/String;III)V", &method_onSyncStarted},
      {"onSyncReport", "(IIII[B)V", &method_onSyncReport},
      {"onSyncLost", "(I)V", &method_onSyncLost},
      {"onSyncTransferredCallback", "(IILjava/lang/String;)V",
       &method_onSyncTransferredCallback},
      {"onBigInfoReport", "(IZ)V", &method_onBigInfoReport},
  };
  GET_JAVA_METHODS(env,
                   "com/android/bluetooth/le_scan/PeriodicScanNativeInterface",
                   javaMethods);
  return 0;
}

// JNI functions defined in DistanceMeasurementNativeInterface class.
static int register_com_android_bluetooth_gatt_distance_measurement(
    JNIEnv* env) {
  const JNINativeMethod methods[] = {
      {"initializeNative", "()V", (void*)distanceMeasurementInitializeNative},
      {"cleanupNative", "()V", (void*)distanceMeasurementCleanupNative},
      {"startDistanceMeasurementNative", "(Ljava/lang/String;II)V",
       (void*)startDistanceMeasurementNative},
      {"stopDistanceMeasurementNative", "(Ljava/lang/String;I)V",
       (void*)stopDistanceMeasurementNative},
  };
  const int result = REGISTER_NATIVE_METHODS(
      env, "com/android/bluetooth/gatt/DistanceMeasurementNativeInterface",
      methods);
  if (result != 0) {
    return result;
  }

  const JNIJavaMethod javaMethods[] = {
      {"onDistanceMeasurementStarted", "(Ljava/lang/String;I)V",
       &method_onDistanceMeasurementStarted},
      {"onDistanceMeasurementStartFail", "(Ljava/lang/String;II)V",
       &method_onDistanceMeasurementStartFail},
      {"onDistanceMeasurementStopped", "(Ljava/lang/String;II)V",
       &method_onDistanceMeasurementStopped},
      {"onDistanceMeasurementResult", "(Ljava/lang/String;IIIIIII)V",
       &method_onDistanceMeasurementResult},
  };
  GET_JAVA_METHODS(
      env, "com/android/bluetooth/gatt/DistanceMeasurementNativeInterface",
      javaMethods);
  return 0;
}

// JNI functions defined in GattNativeInterface class.
static int register_com_android_bluetooth_gatt_(JNIEnv* env) {
  const JNINativeMethod methods[] = {
      {"initializeNative", "()V", (void*)initializeNative},
      {"cleanupNative", "()V", (void*)cleanupNative},
      {"gattClientGetDeviceTypeNative", "(Ljava/lang/String;)I",
       (void*)gattClientGetDeviceTypeNative},
      {"gattClientRegisterAppNative", "(JJZ)V",
       (void*)gattClientRegisterAppNative},
      {"gattClientUnregisterAppNative", "(I)V",
       (void*)gattClientUnregisterAppNative},
      {"gattClientConnectNative", "(ILjava/lang/String;IZIZI)V",
       (void*)gattClientConnectNative},
      {"gattClientDisconnectNative", "(ILjava/lang/String;I)V",
       (void*)gattClientDisconnectNative},
      {"gattClientSetPreferredPhyNative", "(ILjava/lang/String;III)V",
       (void*)gattClientSetPreferredPhyNative},
      {"gattClientReadPhyNative", "(ILjava/lang/String;)V",
       (void*)gattClientReadPhyNative},
      {"gattClientRefreshNative", "(ILjava/lang/String;)V",
       (void*)gattClientRefreshNative},
      {"gattClientSearchServiceNative", "(IZJJ)V",
       (void*)gattClientSearchServiceNative},
      {"gattClientDiscoverServiceByUuidNative", "(IJJ)V",
       (void*)gattClientDiscoverServiceByUuidNative},
      {"gattClientGetGattDbNative", "(I)V", (void*)gattClientGetGattDbNative},
      {"gattClientReadCharacteristicNative", "(III)V",
       (void*)gattClientReadCharacteristicNative},
      {"gattClientReadUsingCharacteristicUuidNative", "(IJJIII)V",
       (void*)gattClientReadUsingCharacteristicUuidNative},
      {"gattClientReadDescriptorNative", "(III)V",
       (void*)gattClientReadDescriptorNative},
      {"gattClientWriteCharacteristicNative", "(IIII[B)V",
       (void*)gattClientWriteCharacteristicNative},
      {"gattClientWriteDescriptorNative", "(III[B)V",
       (void*)gattClientWriteDescriptorNative},
      {"gattClientExecuteWriteNative", "(IZ)V",
       (void*)gattClientExecuteWriteNative},
      {"gattClientRegisterForNotificationsNative", "(ILjava/lang/String;IZ)V",
       (void*)gattClientRegisterForNotificationsNative},
      {"gattClientReadRemoteRssiNative", "(ILjava/lang/String;)V",
       (void*)gattClientReadRemoteRssiNative},
      {"gattClientConfigureMTUNative", "(II)V",
       (void*)gattClientConfigureMTUNative},
      {"gattConnectionParameterUpdateNative", "(ILjava/lang/String;IIIIII)V",
       (void*)gattConnectionParameterUpdateNative},
      {"gattServerRegisterAppNative", "(JJZ)V",
       (void*)gattServerRegisterAppNative},
      {"gattServerUnregisterAppNative", "(I)V",
       (void*)gattServerUnregisterAppNative},
      {"gattServerConnectNative", "(ILjava/lang/String;IZI)V",
       (void*)gattServerConnectNative},
      {"gattServerDisconnectNative", "(ILjava/lang/String;I)V",
       (void*)gattServerDisconnectNative},
      {"gattServerSetPreferredPhyNative", "(ILjava/lang/String;III)V",
       (void*)gattServerSetPreferredPhyNative},
      {"gattServerReadPhyNative", "(ILjava/lang/String;)V",
       (void*)gattServerReadPhyNative},
      {"gattServerAddServiceNative", "(ILjava/util/List;)V",
       (void*)gattServerAddServiceNative},
      {"gattServerStopServiceNative", "(II)V",
       (void*)gattServerStopServiceNative},
      {"gattServerDeleteServiceNative", "(II)V",
       (void*)gattServerDeleteServiceNative},
      {"gattServerSendIndicationNative", "(III[B)V",
       (void*)gattServerSendIndicationNative},
      {"gattServerSendNotificationNative", "(III[B)V",
       (void*)gattServerSendNotificationNative},
      {"gattServerSendResponseNative", "(IIIIII[BI)V",
       (void*)gattServerSendResponseNative},
      {"gattSubrateRequestNative", "(ILjava/lang/String;IIIII)V",
       (void*)gattSubrateRequestNative},

      {"gattTestNative", "(IJJLjava/lang/String;IIIII)V",
       (void*)gattTestNative},
  };
  const int result = REGISTER_NATIVE_METHODS(
      env, "com/android/bluetooth/gatt/GattNativeInterface", methods);
  if (result != 0) {
    return result;
  }

  const JNIJavaMethod javaMethods[] = {
      // Client callbacks
      {"onClientRegistered", "(IIJJ)V", &method_onClientRegistered},
      {"onConnected", "(IIILjava/lang/String;)V", &method_onConnected},
      {"onDisconnected", "(IIILjava/lang/String;)V", &method_onDisconnected},
      {"onReadCharacteristic", "(III[B)V", &method_onReadCharacteristic},
      {"onWriteCharacteristic", "(III[B)V", &method_onWriteCharacteristic},
      {"onExecuteCompleted", "(II)V", &method_onExecuteCompleted},
      {"onSearchCompleted", "(II)V", &method_onSearchCompleted},
      {"onReadDescriptor", "(III[B)V", &method_onReadDescriptor},
      {"onWriteDescriptor", "(III[B)V", &method_onWriteDescriptor},
      {"onNotify", "(ILjava/lang/String;IZ[B)V", &method_onNotify},
      {"onRegisterForNotifications", "(IIII)V",
       &method_onRegisterForNotifications},
      {"onReadRemoteRssi", "(ILjava/lang/String;II)V",
       &method_onReadRemoteRssi},
      {"onConfigureMTU", "(III)V", &method_onConfigureMTU},
      {"onClientCongestion", "(IZ)V", &method_onClientCongestion},
      {"getSampleGattDbElement", "()Lcom/android/bluetooth/gatt/GattDbElement;",
       &method_getSampleGattDbElement},
      {"onGetGattDb", "(ILjava/util/ArrayList;)V", &method_onGetGattDb},
      {"onClientPhyRead", "(ILjava/lang/String;III)V", &method_onClientPhyRead},
      {"onClientPhyUpdate", "(IIII)V", &method_onClientPhyUpdate},
      {"onClientConnUpdate", "(IIIII)V", &method_onClientConnUpdate},
      {"onServiceChanged", "(I)V", &method_onServiceChanged},
      {"onClientSubrateChange", "(IIIIII)V", &method_onClientSubrateChange},

      // Server callbacks
      {"onServerRegistered", "(IIJJ)V", &method_onServerRegistered},
      {"onClientConnected", "(Ljava/lang/String;ZII)V",
       &method_onClientConnected},
      {"onServiceAdded", "(IILjava/util/List;)V", &method_onServiceAdded},
      {"onServiceStopped", "(III)V", &method_onServiceStopped},
      {"onServiceDeleted", "(III)V", &method_onServiceDeleted},
      {"onResponseSendCompleted", "(II)V", &method_onResponseSendCompleted},
      {"onServerReadCharacteristic", "(Ljava/lang/String;IIIIZ)V",
       &method_onServerReadCharacteristic},
      {"onServerReadDescriptor", "(Ljava/lang/String;IIIIZ)V",
       &method_onServerReadDescriptor},
      {"onServerWriteCharacteristic", "(Ljava/lang/String;IIIIIZZ[B)V",
       &method_onServerWriteCharacteristic},
      {"onServerWriteDescriptor", "(Ljava/lang/String;IIIIIZZ[B)V",
       &method_onServerWriteDescriptor},
      {"onExecuteWrite", "(Ljava/lang/String;III)V", &method_onExecuteWrite},
      {"onNotificationSent", "(II)V", &method_onNotificationSent},
      {"onServerCongestion", "(IZ)V", &method_onServerCongestion},
      {"onMtuChanged", "(II)V", &method_onServerMtuChanged},
      {"onServerPhyRead", "(ILjava/lang/String;III)V", &method_onServerPhyRead},
      {"onServerPhyUpdate", "(IIII)V", &method_onServerPhyUpdate},
      {"onServerConnUpdate", "(IIIII)V", &method_onServerConnUpdate},
      {"onServerSubrateChange", "(IIIIII)V", &method_onServerSubrateChange},
  };
  GET_JAVA_METHODS(env, "com/android/bluetooth/gatt/GattNativeInterface",
                   javaMethods);
  return 0;
}

int register_com_android_bluetooth_gatt(JNIEnv* env) {
  const std::array<std::function<int(JNIEnv*)>, 5> register_fns = {
      register_com_android_bluetooth_gatt_scan,
      register_com_android_bluetooth_gatt_advertise_manager,
      register_com_android_bluetooth_gatt_periodic_scan,
      register_com_android_bluetooth_gatt_distance_measurement,
      register_com_android_bluetooth_gatt_,
  };

  for (const auto& fn : register_fns) {
    const int result = fn(env);
    if (result != 0) {
      return result;
    }
  }
  return 0;
}
}  // namespace android