1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.internal.telephony.metrics; 18 19 import android.os.SystemClock; 20 21 import com.android.internal.telephony.nano.TelephonyProto.TelephonyCallSession; 22 23 import java.util.ArrayDeque; 24 import java.util.Deque; 25 26 /** The ongoing Call session */ 27 public class InProgressCallSession { 28 29 /** Maximum events stored in the session */ 30 private static final int MAX_EVENTS = 300; 31 32 /** Phone id */ 33 public final int phoneId; 34 35 /** Call session events */ 36 public final Deque<TelephonyCallSession.Event> events; 37 38 /** Call session starting system time in minute */ 39 public final int startSystemTimeMin; 40 41 /** Call session starting elapsed time in milliseconds */ 42 public final long startElapsedTimeMs; 43 44 /** The last event's time */ 45 private long mLastElapsedTimeMs; 46 47 /** Indicating events dropped */ 48 private boolean mEventsDropped = false; 49 50 /** Last known phone state */ 51 private int mLastKnownPhoneState; 52 53 /** Check if events dropped */ isEventsDropped()54 public boolean isEventsDropped() { return mEventsDropped; } 55 56 /** 57 * Constructor 58 * 59 * @param phoneId Phone id 60 */ InProgressCallSession(int phoneId)61 public InProgressCallSession(int phoneId) { 62 this.phoneId = phoneId; 63 events = new ArrayDeque<>(); 64 // Save session start with lowered precision due to the privacy requirements 65 startSystemTimeMin = TelephonyMetrics.roundSessionStart(System.currentTimeMillis()); 66 startElapsedTimeMs = SystemClock.elapsedRealtime(); 67 mLastElapsedTimeMs = startElapsedTimeMs; 68 } 69 70 /** 71 * Add event 72 * 73 * @param builder Event builder 74 */ addEvent(CallSessionEventBuilder builder)75 public void addEvent(CallSessionEventBuilder builder) { 76 addEvent(SystemClock.elapsedRealtime(), builder); 77 } 78 79 /** 80 * Add event 81 * 82 * @param timestamp Timestamp to be recoded with the event 83 * @param builder Event builder 84 */ addEvent(long timestamp, CallSessionEventBuilder builder)85 synchronized public void addEvent(long timestamp, CallSessionEventBuilder builder) { 86 if (events.size() >= MAX_EVENTS) { 87 events.removeFirst(); 88 mEventsDropped = true; 89 } 90 91 builder.setDelay(TelephonyMetrics.toPrivacyFuzzedTimeInterval( 92 mLastElapsedTimeMs, timestamp)); 93 94 events.add(builder.build()); 95 mLastElapsedTimeMs = timestamp; 96 } 97 98 /** 99 * Check if the Call Session contains CS calls 100 * @return true if there are CS calls in the call list 101 */ containsCsCalls()102 public boolean containsCsCalls() { 103 for (TelephonyCallSession.Event event : events) { 104 if (event.type == TelephonyCallSession.Event.Type.RIL_CALL_LIST_CHANGED) { 105 return true; 106 } 107 } 108 return false; 109 } 110 111 /** 112 * Set Phone State 113 * @param state 114 */ setLastKnownPhoneState(int state)115 public void setLastKnownPhoneState(int state) { 116 mLastKnownPhoneState = state; 117 } 118 119 /** 120 * Checks if Phone is in Idle state 121 * @return true if device is in Phone is idle state. 122 * 123 */ isPhoneIdle()124 public boolean isPhoneIdle() { 125 return (mLastKnownPhoneState == TelephonyCallSession.Event.PhoneState.STATE_IDLE); 126 } 127 } 128