/*
 * Copyright 2018 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.
 */

syntax = "proto2";
package android.bluetooth.le;

option java_outer_classname = "BluetoothLEProtoEnums";
option java_multiple_files = true;


// LE ACL Connection State. This as per - go/bluetooth-le-connection-metrics
enum LeAclConnectionState {
  LE_ACL_UNSPECIFIED = 0;
  LE_ACL_SUCCESS = 1;
  LE_ACL_FAILED = 2;
  LE_ACL_ALREADY_PRESENT = 3;
}

// Connection Origin type.
enum LeConnectionOriginType {
  ORIGIN_UNSPECIFIED = 0;
  ORIGIN_NATIVE = 1;
  ORIGIN_JAVA = 2;
}

// LE Connection Type
enum LeConnectionType {
  CONNECTION_TYPE_UNSPECIFIED = 0;
  CONNECTION_TYPE_LE_ACL = 1;
  CONNECTION_TYPE_GATT = 2;
  CONNECTION_TYPE_L2CAP_FIXED_CHNL_SMP = 3;
  CONNECTION_TYPE_L2CAP_FIXED_CHNL_ATT = 4;
  CONNECTION_TYPE_L2CAP_FIXED_CHNL_LE_SIGNALLING = 5;
  CONNECTION_TYPE_L2CAP_FIXED_CHNL_AMP = 6;
  CONNECTION_TYPE_L2CAP_FIXED_CHNL_SMP_BR_EDR = 7;
}

// LE Connection State
enum LeConnectionState {
  STATE_UNSPECIFIED = 0;
  STATE_LE_ACL_START = 1;
  STATE_LE_ACL_END = 2;
  STATE_LE_ACL_CANCEL = 3;
  STATE_LE_ACL_TIMEOUT = 4;
  STATE_GATT_APP_USE_LINK_FLAG = 5;
  STATE_GATT_CREATE_DIRECT_CONN = 6;
  STATE_GATT_HOLD_LINK_EMPTY = 7;
  STATE_GATT_CONNECT_NATIVE = 8;
  STATE_GATT_APP_CREATE_LE_ACL = 9;
  STATE_GATT_CONN_STATE_CHANGE_CLIENT = 10;
  STATE_GATT_CONN_STATE_CHANGE_SERVER = 11;
  STATE_L2CAP_FIXED_CHNL_START_CREATE_CONN = 12;
  STATE_L2CAP_FIXED_CHNL_START_LE_ACL = 13;
  STATE_L2CAP_FIXED_CHNL_LE_ACL_FINISH = 14;
}

// LE scan callback types
enum LeScanCallbackType {
  TYPE_UNKNOWN = 0;
  TYPE_ALL_MATCHES = 1;
  TYPE_FIRST_MATCH = 2;
  TYPE_MATCH_LOST = 4;
  TYPE_ALL_MATCHES_AUTO_BATCH = 8;
}

// LE Scan Type
enum LeScanType {
  SCAN_TYPE_UNKNOWN = 0;
  SCAN_TYPE_REGULAR = 1;
  SCAN_TYPE_BATCH = 2;
  SCAN_TYPE_AUTO_BATCH = 3;
}

// LE Scan Mode. It is based on the scan modes defined in LE scan settings in
// the framework.
enum LeScanMode {
  // Referring to ScanSettings.java
  SCAN_MODE_UNKNOWN = 0;
  SCAN_MODE_OPPORTUNISTIC = 1;
  SCAN_MODE_LOW_POWER = 2;
  SCAN_MODE_BALANCED = 3;
  SCAN_MODE_LOW_LATENCY = 4;
  SCAN_MODE_AMBIENT_DISCOVERY = 5;
  // Below modes are only applicable for radio scan not app scan.
  SCAN_MODE_SCREEN_OFF = 6;
  SCAN_MODE_SCREEN_OFF_BALANCED = 7;
  // For non-standard scan mode by OEMs.
  SCAN_MODE_CUSTOM = 20;
}

// Reason code for LE scan abuse.
enum LeScanAbuseReason {
  REASON_UNKNOWN = 0;
  REASON_SCAN_TIMEOUT = 1;
  // Hardware filter not available.
  REASON_HW_FILTER_NA = 2;
  // Tracking hardware filter not available.
  REASON_TRACKING_HW_FILTER_NA = 3;
}

// LE adv interval configuration.
// Refer to AdvertisingSetParameters.java
enum LeAdvInterval {
  INTERVAL_UNKNOWN = 0;
  INTERVAL_HIGH = 1;
  INTERVAL_MEDIUM = 2;
  INTERVAL_LOW = 3;
}

// LE adv tx power configuration.
// Refer to AdvertisingSetParameters.java
enum LeAdvTxPower {
  TX_POWER_UNKNOWN = 0;
  TX_POWER_ULTRA_LOW = 1;
  TX_POWER_LOW = 2;
  TX_POWER_MEDIUM = 3;
  TX_POWER_HIGH = 4;
}

// Operation code for LE adv.
enum LeAdvOpCode {
  ERROR_CODE_UNKNOWN = 0;
  ERROR_CODE_ON_START = 1;
}

// Status code for advertising set start.
// Refer to AdvertisingSetCallback.java
enum LeAdvStatusCode {
  ADV_STATUS_UNKNOWN = 0;
  ADV_STATUS_SUCCESS = 1;
  ADV_STATUS_FAILED_DATA_TOO_LARGE = 2;
  ADV_STATUS_FAILED_TOO_MANY_ADVERTISERS = 3;
  ADV_STATUS_FAILED_ALREADY_STARTED = 4;
  ADV_STATUS_FAILED_INTERNAL_ERROR = 5;
  ADV_STATUS_FAILED_FEATURE_UNSUPPORTED = 6;
}

// App importance compared to foreground service (FGS).
// Refer to ScanManager.java for the usage of the app importance
enum AppImportance {
  IMPORTANCE_UNKNOWN = 0;
  IMPORTANCE_LOWER_THAN_FGS = 1;
  IMPORTANCE_EQUAL_TO_FGS = 2;
  IMPORTANCE_HIGHER_THAN_FGS = 3;
}