path: root/src/java/com/android/internal/telephony/SamsungCDMAQualcommRIL.java

/*
 * Copyright (C) 2012 The CyanogenMod 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.
 */

package com.android.internal.telephony;

import static com.android.internal.telephony.RILConstants.*;

import android.content.Context;
import android.os.AsyncResult;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import android.os.Parcel;
import android.telephony.SmsMessage;
import android.os.SystemProperties;
import android.os.SystemClock;
import android.text.TextUtils;
import android.util.Log;
import android.telephony.SignalStrength;

import android.telephony.PhoneNumberUtils;
import com.android.internal.telephony.RILConstants;
import com.android.internal.telephony.gsm.SmsBroadcastConfigInfo;
import com.android.internal.telephony.cdma.CdmaInformationRecords;
import com.android.internal.telephony.cdma.CdmaInformationRecords.CdmaSignalInfoRec;
import com.android.internal.telephony.cdma.SignalToneUtil;

import java.util.ArrayList;
import java.util.Collections;

/**
 * As stands, the RIL supports calling get subscription source which can
 * handle both ruim and nv qc devices. The lteOnCdma property allows
 * for the devices to provision for multiple cdma dun types at run time. This
 * extension of shared merely fixes nuance issues arising from the differences
 * caused by embedded SIM and legacy CDMA.
 * {@hide}
 */
public class SamsungCDMAQualcommRIL extends RIL implements
CommandsInterface {
    private Object mSMSLock = new Object();
    private boolean mIsSendingSMS = false;
    public static final long SEND_SMS_TIMEOUT_IN_MS = 30000;

    public SamsungCDMAQualcommRIL(Context context, int networkMode,
            int cdmaSubscription) {
        super(context, networkMode, cdmaSubscription);
    }

    @Override
    public void
    sendCdmaSms(byte[] pdu, Message result) {
        // Do not send a new SMS until the response for the previous SMS has been received
        //   * for the error case where the response never comes back, time out after
        //     30 seconds and just try the next CDMA_SEND_SMS
        synchronized (mSMSLock) {
            long timeoutTime  = SystemClock.elapsedRealtime() + SEND_SMS_TIMEOUT_IN_MS;
            long waitTimeLeft = SEND_SMS_TIMEOUT_IN_MS;
            while (mIsSendingSMS && (waitTimeLeft > 0)) {
                Log.d(LOG_TAG, "sendCdmaSms() waiting for response of previous CDMA_SEND_SMS");
                try {
                    mSMSLock.wait(waitTimeLeft);
                } catch (InterruptedException ex) {
                    // ignore the interrupt and rewait for the remainder
                }
                waitTimeLeft = timeoutTime - SystemClock.elapsedRealtime();
            }
            if (waitTimeLeft <= 0) {
                Log.e(LOG_TAG, "sendCdmaSms() timed out waiting for response of previous CDMA_SEND_SMS");
            }
            mIsSendingSMS = true;
        }

        super.sendCdmaSms(pdu, result);
    }

    @Override
    protected Object responseSignalStrength(Parcel p) {
        int numInts = 12;
        int response[];

        // This is a mashup of algorithms used in
        // SamsungQualcommUiccRIL.java

        // Get raw data
        response = new int[numInts];
        for (int i = 0; i < numInts; i++) {
            response[i] = p.readInt();
        }
        // Take just the least significant byte as the signal strength
        response[2] %= 256;
        response[4] %= 256;

        // RIL_LTE_SignalStrength
        if (response[7] == 99) {
            // If LTE is not enabled, clear LTE results
            // 7-11 must be -1 for GSM signal strength to be used (see
            // frameworks/base/telephony/java/android/telephony/SignalStrength.java)
            response[7] = -1;
            response[8] = -1;
            response[9] = -1;
            response[10] = -1;
            response[11] = -1;
        } else {
            response[8] *= -1;
        }

        return new SignalStrength(response[0], response[1], response[2], response[3], response[4], response[5], response[6], response[7], response[8], response[9], response[10], response[11], false);

    }

    @Override
    protected Object responseCallList(Parcel p) {
        int num;
        int voiceSettings;
        ArrayList<DriverCall> response;
        DriverCall dc;

        num = p.readInt();
        response = new ArrayList<DriverCall>(num);

        for (int i = 0; i < num; i++) {
            dc = new DriverCall();

            dc.state = DriverCall.stateFromCLCC(p.readInt());
            dc.index = p.readInt();
            dc.TOA = p.readInt();
            dc.isMpty = (0 != p.readInt());
            dc.isMT = (0 != p.readInt());
            dc.als = p.readInt();
            voiceSettings = p.readInt();
            dc.isVoice = (0 == voiceSettings) ? false : true;
            dc.isVoicePrivacy = (0 != p.readInt());
            // Some Samsung magic data for Videocalls
            // hack taken from smdk4210ril class
            voiceSettings = p.readInt();
            // printing it to cosole for later investigation
            Log.d(LOG_TAG, "Samsung magic = " + voiceSettings);
            dc.number = p.readString();
            int np = p.readInt();
            dc.numberPresentation = DriverCall.presentationFromCLIP(np);
            dc.name = p.readString();
            dc.namePresentation = p.readInt();
            int uusInfoPresent = p.readInt();
            if (uusInfoPresent == 1) {
                dc.uusInfo = new UUSInfo();
                dc.uusInfo.setType(p.readInt());
                dc.uusInfo.setDcs(p.readInt());
                byte[] userData = p.createByteArray();
                dc.uusInfo.setUserData(userData);
                riljLogv(String.format(
                        "Incoming UUS : type=%d, dcs=%d, length=%d",
                        dc.uusInfo.getType(), dc.uusInfo.getDcs(),
                        dc.uusInfo.getUserData().length));
                riljLogv("Incoming UUS : data (string)="
                        + new String(dc.uusInfo.getUserData()));
                riljLogv("Incoming UUS : data (hex): "
                        + IccUtils.bytesToHexString(dc.uusInfo.getUserData()));
            } else {
                riljLogv("Incoming UUS : NOT present!");
            }

            // Make sure there's a leading + on addresses with a TOA of 145
            dc.number = PhoneNumberUtils.stringFromStringAndTOA(dc.number,
                    dc.TOA);

            response.add(dc);

            if (dc.isVoicePrivacy) {
                mVoicePrivacyOnRegistrants.notifyRegistrants();
                riljLog("InCall VoicePrivacy is enabled");
            } else {
                mVoicePrivacyOffRegistrants.notifyRegistrants();
                riljLog("InCall VoicePrivacy is disabled");
            }
        }

        Collections.sort(response);

        return response;
    }

    // Workaround for Samsung CDMA "ring of death" bug:
    //
    // Symptom: As soon as the phone receives notice of an incoming call, an
    // audible "old fashioned ring" is emitted through the earpiece and
    // persists through the duration of the call, or until reboot if the call
    // isn't answered.
    //
    // Background: The CDMA telephony stack implements a number of "signal info
    // tones" that are locally generated by ToneGenerator and mixed into the
    // voice call path in response to radio RIL_UNSOL_CDMA_INFO_REC requests.
    // One of these tones, IS95_CONST_IR_SIG_IS54B_L, is requested by the
    // radio just prior to notice of an incoming call when the voice call
    // path is muted. CallNotifier is responsible for stopping all signal
    // tones (by "playing" the TONE_CDMA_SIGNAL_OFF tone) upon receipt of a
    // "new ringing connection", prior to unmuting the voice call path.
    //
    // Problem: CallNotifier's incoming call path is designed to minimize
    // latency to notify users of incoming calls ASAP. Thus,
    // SignalInfoTonePlayer requests are handled asynchronously by spawning a
    // one-shot thread for each. Unfortunately the ToneGenerator API does
    // not provide a mechanism to specify an ordering on requests, and thus,
    // unexpected thread interleaving may result in ToneGenerator processing
    // them in the opposite order that CallNotifier intended. In this case,
    // playing the "signal off" tone first, followed by playing the "old
    // fashioned ring" indefinitely.
    //
    // Solution: An API change to ToneGenerator is required to enable
    // SignalInfoTonePlayer to impose an ordering on requests (i.e., drop any
    // request that's older than the most recent observed). Such a change,
    // or another appropriate fix should be implemented in AOSP first.
    //
    // Workaround: Intercept RIL_UNSOL_CDMA_INFO_REC requests from the radio,
    // check for a signal info record matching IS95_CONST_IR_SIG_IS54B_L, and
    // drop it so it's never seen by CallNotifier. If other signal tones are
    // observed to cause this problem, they should be dropped here as well.
    @Override
    protected void notifyRegistrantsCdmaInfoRec(CdmaInformationRecords infoRec) {
        final int response = RIL_UNSOL_CDMA_INFO_REC;

        if (infoRec.record instanceof CdmaSignalInfoRec) {
            CdmaSignalInfoRec sir = (CdmaSignalInfoRec) infoRec.record;
            if (sir != null
                    && sir.isPresent
                    && sir.signalType == SignalToneUtil.IS95_CONST_IR_SIGNAL_IS54B
                    && sir.alertPitch == SignalToneUtil.IS95_CONST_IR_ALERT_MED
                    && sir.signal == SignalToneUtil.IS95_CONST_IR_SIG_IS54B_L) {

                Log.d(LOG_TAG, "Dropping \"" + responseToString(response) + " "
                        + retToString(response, sir)
                        + "\" to prevent \"ring of death\" bug.");
                return;
            }
        }

        super.notifyRegistrantsCdmaInfoRec(infoRec);
    }

    @Override
    protected Object
    responseSMS(Parcel p) {
        // Notify that sendSMS() can send the next SMS
        synchronized (mSMSLock) {
            mIsSendingSMS = false;
            mSMSLock.notify();
        }

        return super.responseSMS(p);
    }
}