1b208a24cf521401912cfce16fce550a995cf1250Wink Saville/* 2b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Copyright (C) 2012 The Android Open Source Project 3b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 4b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Licensed under the Apache License, Version 2.0 (the "License"); 5b208a24cf521401912cfce16fce550a995cf1250Wink Saville * you may not use this file except in compliance with the License. 6b208a24cf521401912cfce16fce550a995cf1250Wink Saville * You may obtain a copy of the License at 7b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 8b208a24cf521401912cfce16fce550a995cf1250Wink Saville * http://www.apache.org/licenses/LICENSE-2.0 9b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 10b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Unless required by applicable law or agreed to in writing, software 11b208a24cf521401912cfce16fce550a995cf1250Wink Saville * distributed under the License is distributed on an "AS IS" BASIS, 12b208a24cf521401912cfce16fce550a995cf1250Wink Saville * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13b208a24cf521401912cfce16fce550a995cf1250Wink Saville * See the License for the specific language governing permissions and 14b208a24cf521401912cfce16fce550a995cf1250Wink Saville * limitations under the License. 15b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 16b208a24cf521401912cfce16fce550a995cf1250Wink Saville 17b208a24cf521401912cfce16fce550a995cf1250Wink Savillepackage android.telephony; 18b208a24cf521401912cfce16fce550a995cf1250Wink Saville 19b208a24cf521401912cfce16fce550a995cf1250Wink Savilleimport android.os.Parcel; 20b208a24cf521401912cfce16fce550a995cf1250Wink Savilleimport android.os.Parcelable; 21b208a24cf521401912cfce16fce550a995cf1250Wink Savilleimport android.util.Log; 22b208a24cf521401912cfce16fce550a995cf1250Wink Saville 23b208a24cf521401912cfce16fce550a995cf1250Wink Saville/** 24b208a24cf521401912cfce16fce550a995cf1250Wink Saville * LTE signal strength related information. 25b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 26c6e4917adda19beb780386bcc26b652748b8ab13Wink Savillepublic final class CellSignalStrengthGsm extends CellSignalStrength implements Parcelable { 27b208a24cf521401912cfce16fce550a995cf1250Wink Saville 28b208a24cf521401912cfce16fce550a995cf1250Wink Saville private static final String LOG_TAG = "CellSignalStrengthGsm"; 29b208a24cf521401912cfce16fce550a995cf1250Wink Saville private static final boolean DBG = false; 30b208a24cf521401912cfce16fce550a995cf1250Wink Saville 31b208a24cf521401912cfce16fce550a995cf1250Wink Saville private static final int GSM_SIGNAL_STRENGTH_GREAT = 12; 32b208a24cf521401912cfce16fce550a995cf1250Wink Saville private static final int GSM_SIGNAL_STRENGTH_GOOD = 8; 33b208a24cf521401912cfce16fce550a995cf1250Wink Saville private static final int GSM_SIGNAL_STRENGTH_MODERATE = 8; 34b208a24cf521401912cfce16fce550a995cf1250Wink Saville 35b208a24cf521401912cfce16fce550a995cf1250Wink Saville private int mSignalStrength; // Valid values are (0-31, 99) as defined in TS 27.007 8.5 36b208a24cf521401912cfce16fce550a995cf1250Wink Saville private int mBitErrorRate; // bit error rate (0-7, 99) as defined in TS 27.007 8.5 37b208a24cf521401912cfce16fce550a995cf1250Wink Saville 38b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 39b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Empty constructor 40b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 41b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @hide 42b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 43b208a24cf521401912cfce16fce550a995cf1250Wink Saville public CellSignalStrengthGsm() { 44b208a24cf521401912cfce16fce550a995cf1250Wink Saville setDefaultValues(); 45b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 46b208a24cf521401912cfce16fce550a995cf1250Wink Saville 47b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 48b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Constructor 49b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 50b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @hide 51b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 52b208a24cf521401912cfce16fce550a995cf1250Wink Saville public CellSignalStrengthGsm(int ss, int ber) { 53b208a24cf521401912cfce16fce550a995cf1250Wink Saville initialize(ss, ber); 54b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 55b208a24cf521401912cfce16fce550a995cf1250Wink Saville 56b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 57b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Copy constructors 58b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 59b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @param s Source SignalStrength 60b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 61b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @hide 62b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 63b208a24cf521401912cfce16fce550a995cf1250Wink Saville public CellSignalStrengthGsm(CellSignalStrengthGsm s) { 64b208a24cf521401912cfce16fce550a995cf1250Wink Saville copyFrom(s); 65b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 66b208a24cf521401912cfce16fce550a995cf1250Wink Saville 67b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 68b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Initialize all the values 69b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 70b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @param SignalStrength 71b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 72b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @hide 73b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 74b208a24cf521401912cfce16fce550a995cf1250Wink Saville public void initialize(int ss, int ber) { 75b208a24cf521401912cfce16fce550a995cf1250Wink Saville mSignalStrength = ss; 76b208a24cf521401912cfce16fce550a995cf1250Wink Saville mBitErrorRate = ber; 77b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 78b208a24cf521401912cfce16fce550a995cf1250Wink Saville 79b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 80b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @hide 81b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 82b208a24cf521401912cfce16fce550a995cf1250Wink Saville protected void copyFrom(CellSignalStrengthGsm s) { 83b208a24cf521401912cfce16fce550a995cf1250Wink Saville mSignalStrength = s.mSignalStrength; 84b208a24cf521401912cfce16fce550a995cf1250Wink Saville mBitErrorRate = s.mBitErrorRate; 85b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 86b208a24cf521401912cfce16fce550a995cf1250Wink Saville 87b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 88b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @hide 89b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 90b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 91b208a24cf521401912cfce16fce550a995cf1250Wink Saville public CellSignalStrengthGsm copy() { 92b208a24cf521401912cfce16fce550a995cf1250Wink Saville return new CellSignalStrengthGsm(this); 93b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 94b208a24cf521401912cfce16fce550a995cf1250Wink Saville 95b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** @hide */ 96b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 97b208a24cf521401912cfce16fce550a995cf1250Wink Saville public void setDefaultValues() { 98b208a24cf521401912cfce16fce550a995cf1250Wink Saville mSignalStrength = Integer.MAX_VALUE; 99b208a24cf521401912cfce16fce550a995cf1250Wink Saville mBitErrorRate = Integer.MAX_VALUE; 100b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 101b208a24cf521401912cfce16fce550a995cf1250Wink Saville 102b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 10382e6ee62b2be3c716c215e4ba72c8a12c58620fbWink Saville * Get signal level as an int from 0..4 104b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 105b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 106b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int getLevel() { 107b208a24cf521401912cfce16fce550a995cf1250Wink Saville int level; 108b208a24cf521401912cfce16fce550a995cf1250Wink Saville 109b208a24cf521401912cfce16fce550a995cf1250Wink Saville // ASU ranges from 0 to 31 - TS 27.007 Sec 8.5 110b208a24cf521401912cfce16fce550a995cf1250Wink Saville // asu = 0 (-113dB or less) is very weak 111b208a24cf521401912cfce16fce550a995cf1250Wink Saville // signal, its better to show 0 bars to the user in such cases. 112b208a24cf521401912cfce16fce550a995cf1250Wink Saville // asu = 99 is a special case, where the signal strength is unknown. 113b208a24cf521401912cfce16fce550a995cf1250Wink Saville int asu = mSignalStrength; 114b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (asu <= 2 || asu == 99) level = SIGNAL_STRENGTH_NONE_OR_UNKNOWN; 115b208a24cf521401912cfce16fce550a995cf1250Wink Saville else if (asu >= GSM_SIGNAL_STRENGTH_GREAT) level = SIGNAL_STRENGTH_GREAT; 116b208a24cf521401912cfce16fce550a995cf1250Wink Saville else if (asu >= GSM_SIGNAL_STRENGTH_GOOD) level = SIGNAL_STRENGTH_GOOD; 117b208a24cf521401912cfce16fce550a995cf1250Wink Saville else if (asu >= GSM_SIGNAL_STRENGTH_MODERATE) level = SIGNAL_STRENGTH_MODERATE; 118b208a24cf521401912cfce16fce550a995cf1250Wink Saville else level = SIGNAL_STRENGTH_POOR; 119b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("getLevel=" + level); 120b208a24cf521401912cfce16fce550a995cf1250Wink Saville return level; 121b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 122b208a24cf521401912cfce16fce550a995cf1250Wink Saville 123b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 12482e6ee62b2be3c716c215e4ba72c8a12c58620fbWink Saville * Get the signal strength as dBm 125b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 126b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 127b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int getDbm() { 128b208a24cf521401912cfce16fce550a995cf1250Wink Saville int dBm; 129b208a24cf521401912cfce16fce550a995cf1250Wink Saville 130b208a24cf521401912cfce16fce550a995cf1250Wink Saville int level = mSignalStrength; 131b208a24cf521401912cfce16fce550a995cf1250Wink Saville int asu = (level == 99 ? Integer.MAX_VALUE : level); 132b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (asu != Integer.MAX_VALUE) { 133b208a24cf521401912cfce16fce550a995cf1250Wink Saville dBm = -113 + (2 * asu); 134b208a24cf521401912cfce16fce550a995cf1250Wink Saville } else { 135b208a24cf521401912cfce16fce550a995cf1250Wink Saville dBm = Integer.MAX_VALUE; 136b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 137b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("getDbm=" + dBm); 138b208a24cf521401912cfce16fce550a995cf1250Wink Saville return dBm; 139b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 140b208a24cf521401912cfce16fce550a995cf1250Wink Saville 141b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 142b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Get the LTE signal level as an asu value between 0..97, 99 is unknown 143b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Asu is calculated based on 3GPP RSRP. Refer to 3GPP 27.007 (Ver 10.3.0) Sec 8.69 144b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 145b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 146b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int getAsuLevel() { 147b208a24cf521401912cfce16fce550a995cf1250Wink Saville // ASU ranges from 0 to 31 - TS 27.007 Sec 8.5 148b208a24cf521401912cfce16fce550a995cf1250Wink Saville // asu = 0 (-113dB or less) is very weak 149b208a24cf521401912cfce16fce550a995cf1250Wink Saville // signal, its better to show 0 bars to the user in such cases. 150b208a24cf521401912cfce16fce550a995cf1250Wink Saville // asu = 99 is a special case, where the signal strength is unknown. 151b208a24cf521401912cfce16fce550a995cf1250Wink Saville int level = mSignalStrength; 152b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("getAsuLevel=" + level); 153b208a24cf521401912cfce16fce550a995cf1250Wink Saville return level; 154b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 155b208a24cf521401912cfce16fce550a995cf1250Wink Saville 156b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 157b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int hashCode() { 158b208a24cf521401912cfce16fce550a995cf1250Wink Saville int primeNum = 31; 159b208a24cf521401912cfce16fce550a995cf1250Wink Saville return (mSignalStrength * primeNum) + (mBitErrorRate * primeNum); 160b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 161b208a24cf521401912cfce16fce550a995cf1250Wink Saville 162b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 163b208a24cf521401912cfce16fce550a995cf1250Wink Saville public boolean equals (Object o) { 164b208a24cf521401912cfce16fce550a995cf1250Wink Saville CellSignalStrengthGsm s; 165b208a24cf521401912cfce16fce550a995cf1250Wink Saville 166b208a24cf521401912cfce16fce550a995cf1250Wink Saville try { 167b208a24cf521401912cfce16fce550a995cf1250Wink Saville s = (CellSignalStrengthGsm) o; 168b208a24cf521401912cfce16fce550a995cf1250Wink Saville } catch (ClassCastException ex) { 169b208a24cf521401912cfce16fce550a995cf1250Wink Saville return false; 170b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 171b208a24cf521401912cfce16fce550a995cf1250Wink Saville 172b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (o == null) { 173b208a24cf521401912cfce16fce550a995cf1250Wink Saville return false; 174b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 175b208a24cf521401912cfce16fce550a995cf1250Wink Saville 176b208a24cf521401912cfce16fce550a995cf1250Wink Saville return mSignalStrength == s.mSignalStrength && mBitErrorRate == s.mBitErrorRate; 177b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 178b208a24cf521401912cfce16fce550a995cf1250Wink Saville 179b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 180b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @return string representation. 181b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 182b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 183b208a24cf521401912cfce16fce550a995cf1250Wink Saville public String toString() { 184b208a24cf521401912cfce16fce550a995cf1250Wink Saville return "CellSignalStrengthGsm:" 185b208a24cf521401912cfce16fce550a995cf1250Wink Saville + " ss=" + mSignalStrength 186b208a24cf521401912cfce16fce550a995cf1250Wink Saville + " ber=" + mBitErrorRate; 187b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 188b208a24cf521401912cfce16fce550a995cf1250Wink Saville 189b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** Implement the Parcelable interface */ 190b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 191b208a24cf521401912cfce16fce550a995cf1250Wink Saville public void writeToParcel(Parcel dest, int flags) { 192b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("writeToParcel(Parcel, int): " + toString()); 193b208a24cf521401912cfce16fce550a995cf1250Wink Saville dest.writeInt(mSignalStrength); 194b208a24cf521401912cfce16fce550a995cf1250Wink Saville dest.writeInt(mBitErrorRate); 195b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 196b208a24cf521401912cfce16fce550a995cf1250Wink Saville 197b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 198b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Construct a SignalStrength object from the given parcel 199b208a24cf521401912cfce16fce550a995cf1250Wink Saville * where the token is already been processed. 200b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 201b208a24cf521401912cfce16fce550a995cf1250Wink Saville private CellSignalStrengthGsm(Parcel in) { 202b208a24cf521401912cfce16fce550a995cf1250Wink Saville mSignalStrength = in.readInt(); 203b208a24cf521401912cfce16fce550a995cf1250Wink Saville mBitErrorRate = in.readInt(); 204b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("CellSignalStrengthGsm(Parcel): " + toString()); 205b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 206b208a24cf521401912cfce16fce550a995cf1250Wink Saville 207b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** Implement the Parcelable interface */ 208b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 209b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int describeContents() { 210b208a24cf521401912cfce16fce550a995cf1250Wink Saville return 0; 211b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 212b208a24cf521401912cfce16fce550a995cf1250Wink Saville 213b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** Implement the Parcelable interface */ 214b208a24cf521401912cfce16fce550a995cf1250Wink Saville @SuppressWarnings("hiding") 215b208a24cf521401912cfce16fce550a995cf1250Wink Saville public static final Parcelable.Creator<CellSignalStrengthGsm> CREATOR = 216b208a24cf521401912cfce16fce550a995cf1250Wink Saville new Parcelable.Creator<CellSignalStrengthGsm>() { 217b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 218b208a24cf521401912cfce16fce550a995cf1250Wink Saville public CellSignalStrengthGsm createFromParcel(Parcel in) { 219c6e4917adda19beb780386bcc26b652748b8ab13Wink Saville return new CellSignalStrengthGsm(in); 220b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 221b208a24cf521401912cfce16fce550a995cf1250Wink Saville 222b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 223b208a24cf521401912cfce16fce550a995cf1250Wink Saville public CellSignalStrengthGsm[] newArray(int size) { 224b208a24cf521401912cfce16fce550a995cf1250Wink Saville return new CellSignalStrengthGsm[size]; 225b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 226b208a24cf521401912cfce16fce550a995cf1250Wink Saville }; 227b208a24cf521401912cfce16fce550a995cf1250Wink Saville 228b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 229b208a24cf521401912cfce16fce550a995cf1250Wink Saville * log 230b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 231b208a24cf521401912cfce16fce550a995cf1250Wink Saville private static void log(String s) { 232b208a24cf521401912cfce16fce550a995cf1250Wink Saville Log.w(LOG_TAG, s); 233b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 234b208a24cf521401912cfce16fce550a995cf1250Wink Saville} 235