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; 21599a90c2a02645a5f2d189b9065b863397a4076eWink Savilleimport android.telephony.Rlog; 22b208a24cf521401912cfce16fce550a995cf1250Wink Saville 23b208a24cf521401912cfce16fce550a995cf1250Wink Saville/** 24e3a9cbc052db7f00a96cc7b9580097d67538f360Wink Saville * GSM 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; 33e3a9cbc052db7f00a96cc7b9580097d67538f360Wink Saville private static final int GSM_SIGNAL_STRENGTH_MODERATE = 5; 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 * 70e3a9cbc052db7f00a96cc7b9580097d67538f360Wink Saville * @param ss SignalStrength as ASU value 71e3a9cbc052db7f00a96cc7b9580097d67538f360Wink Saville * @param ber is Bit Error Rate 72b208a24cf521401912cfce16fce550a995cf1250Wink Saville * 73b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @hide 74b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 75b208a24cf521401912cfce16fce550a995cf1250Wink Saville public void initialize(int ss, int ber) { 76b208a24cf521401912cfce16fce550a995cf1250Wink Saville mSignalStrength = ss; 77b208a24cf521401912cfce16fce550a995cf1250Wink Saville mBitErrorRate = ber; 78b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 79b208a24cf521401912cfce16fce550a995cf1250Wink Saville 80b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 81b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @hide 82b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 83b208a24cf521401912cfce16fce550a995cf1250Wink Saville protected void copyFrom(CellSignalStrengthGsm s) { 84b208a24cf521401912cfce16fce550a995cf1250Wink Saville mSignalStrength = s.mSignalStrength; 85b208a24cf521401912cfce16fce550a995cf1250Wink Saville mBitErrorRate = s.mBitErrorRate; 86b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 87b208a24cf521401912cfce16fce550a995cf1250Wink Saville 88b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 89b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @hide 90b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 91b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 92b208a24cf521401912cfce16fce550a995cf1250Wink Saville public CellSignalStrengthGsm copy() { 93b208a24cf521401912cfce16fce550a995cf1250Wink Saville return new CellSignalStrengthGsm(this); 94b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 95b208a24cf521401912cfce16fce550a995cf1250Wink Saville 96b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** @hide */ 97b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 98b208a24cf521401912cfce16fce550a995cf1250Wink Saville public void setDefaultValues() { 99b208a24cf521401912cfce16fce550a995cf1250Wink Saville mSignalStrength = Integer.MAX_VALUE; 100b208a24cf521401912cfce16fce550a995cf1250Wink Saville mBitErrorRate = Integer.MAX_VALUE; 101b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 102b208a24cf521401912cfce16fce550a995cf1250Wink Saville 103b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 10482e6ee62b2be3c716c215e4ba72c8a12c58620fbWink Saville * Get signal level as an int from 0..4 105b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 106b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 107b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int getLevel() { 108b208a24cf521401912cfce16fce550a995cf1250Wink Saville int level; 109b208a24cf521401912cfce16fce550a995cf1250Wink Saville 110b208a24cf521401912cfce16fce550a995cf1250Wink Saville // ASU ranges from 0 to 31 - TS 27.007 Sec 8.5 111b208a24cf521401912cfce16fce550a995cf1250Wink Saville // asu = 0 (-113dB or less) is very weak 112b208a24cf521401912cfce16fce550a995cf1250Wink Saville // signal, its better to show 0 bars to the user in such cases. 113b208a24cf521401912cfce16fce550a995cf1250Wink Saville // asu = 99 is a special case, where the signal strength is unknown. 114b208a24cf521401912cfce16fce550a995cf1250Wink Saville int asu = mSignalStrength; 115b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (asu <= 2 || asu == 99) level = SIGNAL_STRENGTH_NONE_OR_UNKNOWN; 116b208a24cf521401912cfce16fce550a995cf1250Wink Saville else if (asu >= GSM_SIGNAL_STRENGTH_GREAT) level = SIGNAL_STRENGTH_GREAT; 117b208a24cf521401912cfce16fce550a995cf1250Wink Saville else if (asu >= GSM_SIGNAL_STRENGTH_GOOD) level = SIGNAL_STRENGTH_GOOD; 118b208a24cf521401912cfce16fce550a995cf1250Wink Saville else if (asu >= GSM_SIGNAL_STRENGTH_MODERATE) level = SIGNAL_STRENGTH_MODERATE; 119b208a24cf521401912cfce16fce550a995cf1250Wink Saville else level = SIGNAL_STRENGTH_POOR; 120b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("getLevel=" + level); 121b208a24cf521401912cfce16fce550a995cf1250Wink Saville return level; 122b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 123b208a24cf521401912cfce16fce550a995cf1250Wink Saville 124b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 12582e6ee62b2be3c716c215e4ba72c8a12c58620fbWink Saville * Get the signal strength as dBm 126b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 127b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 128b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int getDbm() { 129b208a24cf521401912cfce16fce550a995cf1250Wink Saville int dBm; 130b208a24cf521401912cfce16fce550a995cf1250Wink Saville 131b208a24cf521401912cfce16fce550a995cf1250Wink Saville int level = mSignalStrength; 132b208a24cf521401912cfce16fce550a995cf1250Wink Saville int asu = (level == 99 ? Integer.MAX_VALUE : level); 133b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (asu != Integer.MAX_VALUE) { 134b208a24cf521401912cfce16fce550a995cf1250Wink Saville dBm = -113 + (2 * asu); 135b208a24cf521401912cfce16fce550a995cf1250Wink Saville } else { 136b208a24cf521401912cfce16fce550a995cf1250Wink Saville dBm = Integer.MAX_VALUE; 137b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 138b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("getDbm=" + dBm); 139b208a24cf521401912cfce16fce550a995cf1250Wink Saville return dBm; 140b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 141b208a24cf521401912cfce16fce550a995cf1250Wink Saville 142b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 143e3a9cbc052db7f00a96cc7b9580097d67538f360Wink Saville * Get the signal level as an asu value between 0..31, 99 is unknown 144b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Asu is calculated based on 3GPP RSRP. Refer to 3GPP 27.007 (Ver 10.3.0) Sec 8.69 145b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 146b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 147b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int getAsuLevel() { 148b208a24cf521401912cfce16fce550a995cf1250Wink Saville // ASU ranges from 0 to 31 - TS 27.007 Sec 8.5 149b208a24cf521401912cfce16fce550a995cf1250Wink Saville // asu = 0 (-113dB or less) is very weak 150b208a24cf521401912cfce16fce550a995cf1250Wink Saville // signal, its better to show 0 bars to the user in such cases. 151b208a24cf521401912cfce16fce550a995cf1250Wink Saville // asu = 99 is a special case, where the signal strength is unknown. 152b208a24cf521401912cfce16fce550a995cf1250Wink Saville int level = mSignalStrength; 153b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("getAsuLevel=" + level); 154b208a24cf521401912cfce16fce550a995cf1250Wink Saville return level; 155b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 156b208a24cf521401912cfce16fce550a995cf1250Wink Saville 157b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 158b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int hashCode() { 159b208a24cf521401912cfce16fce550a995cf1250Wink Saville int primeNum = 31; 160b208a24cf521401912cfce16fce550a995cf1250Wink Saville return (mSignalStrength * primeNum) + (mBitErrorRate * primeNum); 161b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 162b208a24cf521401912cfce16fce550a995cf1250Wink Saville 163b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 164b208a24cf521401912cfce16fce550a995cf1250Wink Saville public boolean equals (Object o) { 165b208a24cf521401912cfce16fce550a995cf1250Wink Saville CellSignalStrengthGsm s; 166b208a24cf521401912cfce16fce550a995cf1250Wink Saville 167b208a24cf521401912cfce16fce550a995cf1250Wink Saville try { 168b208a24cf521401912cfce16fce550a995cf1250Wink Saville s = (CellSignalStrengthGsm) o; 169b208a24cf521401912cfce16fce550a995cf1250Wink Saville } catch (ClassCastException ex) { 170b208a24cf521401912cfce16fce550a995cf1250Wink Saville return false; 171b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 172b208a24cf521401912cfce16fce550a995cf1250Wink Saville 173b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (o == null) { 174b208a24cf521401912cfce16fce550a995cf1250Wink Saville return false; 175b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 176b208a24cf521401912cfce16fce550a995cf1250Wink Saville 177b208a24cf521401912cfce16fce550a995cf1250Wink Saville return mSignalStrength == s.mSignalStrength && mBitErrorRate == s.mBitErrorRate; 178b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 179b208a24cf521401912cfce16fce550a995cf1250Wink Saville 180b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 181b208a24cf521401912cfce16fce550a995cf1250Wink Saville * @return string representation. 182b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 183b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 184b208a24cf521401912cfce16fce550a995cf1250Wink Saville public String toString() { 185b208a24cf521401912cfce16fce550a995cf1250Wink Saville return "CellSignalStrengthGsm:" 186b208a24cf521401912cfce16fce550a995cf1250Wink Saville + " ss=" + mSignalStrength 187b208a24cf521401912cfce16fce550a995cf1250Wink Saville + " ber=" + mBitErrorRate; 188b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 189b208a24cf521401912cfce16fce550a995cf1250Wink Saville 190b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** Implement the Parcelable interface */ 191b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 192b208a24cf521401912cfce16fce550a995cf1250Wink Saville public void writeToParcel(Parcel dest, int flags) { 193b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("writeToParcel(Parcel, int): " + toString()); 194b208a24cf521401912cfce16fce550a995cf1250Wink Saville dest.writeInt(mSignalStrength); 195b208a24cf521401912cfce16fce550a995cf1250Wink Saville dest.writeInt(mBitErrorRate); 196b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 197b208a24cf521401912cfce16fce550a995cf1250Wink Saville 198b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 199b208a24cf521401912cfce16fce550a995cf1250Wink Saville * Construct a SignalStrength object from the given parcel 200b208a24cf521401912cfce16fce550a995cf1250Wink Saville * where the token is already been processed. 201b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 202b208a24cf521401912cfce16fce550a995cf1250Wink Saville private CellSignalStrengthGsm(Parcel in) { 203b208a24cf521401912cfce16fce550a995cf1250Wink Saville mSignalStrength = in.readInt(); 204b208a24cf521401912cfce16fce550a995cf1250Wink Saville mBitErrorRate = in.readInt(); 205b208a24cf521401912cfce16fce550a995cf1250Wink Saville if (DBG) log("CellSignalStrengthGsm(Parcel): " + toString()); 206b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 207b208a24cf521401912cfce16fce550a995cf1250Wink Saville 208b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** Implement the Parcelable interface */ 209b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 210b208a24cf521401912cfce16fce550a995cf1250Wink Saville public int describeContents() { 211b208a24cf521401912cfce16fce550a995cf1250Wink Saville return 0; 212b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 213b208a24cf521401912cfce16fce550a995cf1250Wink Saville 214b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** Implement the Parcelable interface */ 215b208a24cf521401912cfce16fce550a995cf1250Wink Saville @SuppressWarnings("hiding") 216b208a24cf521401912cfce16fce550a995cf1250Wink Saville public static final Parcelable.Creator<CellSignalStrengthGsm> CREATOR = 217b208a24cf521401912cfce16fce550a995cf1250Wink Saville new Parcelable.Creator<CellSignalStrengthGsm>() { 218b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 219b208a24cf521401912cfce16fce550a995cf1250Wink Saville public CellSignalStrengthGsm createFromParcel(Parcel in) { 220c6e4917adda19beb780386bcc26b652748b8ab13Wink Saville return new CellSignalStrengthGsm(in); 221b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 222b208a24cf521401912cfce16fce550a995cf1250Wink Saville 223b208a24cf521401912cfce16fce550a995cf1250Wink Saville @Override 224b208a24cf521401912cfce16fce550a995cf1250Wink Saville public CellSignalStrengthGsm[] newArray(int size) { 225b208a24cf521401912cfce16fce550a995cf1250Wink Saville return new CellSignalStrengthGsm[size]; 226b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 227b208a24cf521401912cfce16fce550a995cf1250Wink Saville }; 228b208a24cf521401912cfce16fce550a995cf1250Wink Saville 229b208a24cf521401912cfce16fce550a995cf1250Wink Saville /** 230b208a24cf521401912cfce16fce550a995cf1250Wink Saville * log 231b208a24cf521401912cfce16fce550a995cf1250Wink Saville */ 232b208a24cf521401912cfce16fce550a995cf1250Wink Saville private static void log(String s) { 233599a90c2a02645a5f2d189b9065b863397a4076eWink Saville Rlog.w(LOG_TAG, s); 234b208a24cf521401912cfce16fce550a995cf1250Wink Saville } 235b208a24cf521401912cfce16fce550a995cf1250Wink Saville} 236