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CdmaCallTracker.javaAPI DocAndroid 5.1 API46870Thu Mar 12 22:22:54 GMT 2015com.android.internal.telephony.cdma

CdmaCallTracker

public final class CdmaCallTracker extends com.android.internal.telephony.CallTracker
{@hide}

Fields Summary
static final String
LOG_TAG
private static final boolean
REPEAT_POLLING
private static final boolean
DBG_POLL
static final int
MAX_CONNECTIONS
static final int
MAX_CONNECTIONS_PER_CALL
CdmaConnection[]
mConnections
android.os.RegistrantList
mVoiceCallEndedRegistrants
android.os.RegistrantList
mVoiceCallStartedRegistrants
android.os.RegistrantList
mCallWaitingRegistrants
ArrayList
mDroppedDuringPoll
CdmaCall
mRingingCall
CdmaCall
mForegroundCall
CdmaCall
mBackgroundCall
CdmaConnection
mPendingMO
boolean
mHangupPendingMO
boolean
mPendingCallInEcm
boolean
mIsInEmergencyCall
CDMAPhone
mPhone
boolean
mDesiredMute
int
mPendingCallClirMode
PhoneConstants.State
mState
private boolean
mIsEcmTimerCanceled
private int
m3WayCallFlashDelay
Constructors Summary
CdmaCallTracker(CDMAPhone phone)

//    boolean needsPoll;



    //***** Events

    //***** Constructors
      
        mPhone = phone;
        mCi = phone.mCi;
        mCi.registerForCallStateChanged(this, EVENT_CALL_STATE_CHANGE, null);
        mCi.registerForOn(this, EVENT_RADIO_AVAILABLE, null);
        mCi.registerForNotAvailable(this, EVENT_RADIO_NOT_AVAILABLE, null);
        mCi.registerForCallWaitingInfo(this, EVENT_CALL_WAITING_INFO_CDMA, null);
        mForegroundCall.setGeneric(false);
    
Methods Summary
voidacceptCall()

        if (mRingingCall.getState() == CdmaCall.State.INCOMING) {
            Rlog.i("phone", "acceptCall: incoming...");
            // Always unmute when answering a new call
            setMute(false);
            mCi.acceptCall(obtainCompleteMessage());
        } else if (mRingingCall.getState() == CdmaCall.State.WAITING) {
            CdmaConnection cwConn = (CdmaConnection)(mRingingCall.getLatestConnection());

            // Since there is no network response for supplimentary
            // service for CDMA, we assume call waiting is answered.
            // ringing Call state change to idle is in CdmaCall.detach
            // triggered by updateParent.
            cwConn.updateParent(mRingingCall, mForegroundCall);
            cwConn.onConnectedInOrOut();
            updatePhoneState();
            switchWaitingOrHoldingAndActive();
        } else {
            throw new CallStateException("phone not ringing");
        }
    
booleancanConference()

        return mForegroundCall.getState() == CdmaCall.State.ACTIVE
                && mBackgroundCall.getState() == CdmaCall.State.HOLDING
                && !mBackgroundCall.isFull()
                && !mForegroundCall.isFull();
    
booleancanDial()

        boolean ret;
        int serviceState = mPhone.getServiceState().getState();
        String disableCall = SystemProperties.get(
                TelephonyProperties.PROPERTY_DISABLE_CALL, "false");

        ret = (serviceState != ServiceState.STATE_POWER_OFF)
                && mPendingMO == null
                && !mRingingCall.isRinging()
                && !disableCall.equals("true")
                && (!mForegroundCall.getState().isAlive()
                    || (mForegroundCall.getState() == CdmaCall.State.ACTIVE)
                    || !mBackgroundCall.getState().isAlive());

        if (!ret) {
            log(String.format("canDial is false\n" +
                              "((serviceState=%d) != ServiceState.STATE_POWER_OFF)::=%s\n" +
                              "&& pendingMO == null::=%s\n" +
                              "&& !ringingCall.isRinging()::=%s\n" +
                              "&& !disableCall.equals(\"true\")::=%s\n" +
                              "&& (!foregroundCall.getState().isAlive()::=%s\n" +
                              "   || foregroundCall.getState() == CdmaCall.State.ACTIVE::=%s\n" +
                              "   ||!backgroundCall.getState().isAlive())::=%s)",
                    serviceState,
                    serviceState != ServiceState.STATE_POWER_OFF,
                    mPendingMO == null,
                    !mRingingCall.isRinging(),
                    !disableCall.equals("true"),
                    !mForegroundCall.getState().isAlive(),
                    mForegroundCall.getState() == CdmaCall.State.ACTIVE,
                    !mBackgroundCall.getState().isAlive()));
        }
        return ret;
    
booleancanTransfer()

        Rlog.e(LOG_TAG, "canTransfer: not possible in CDMA");
        return false;
    
private voidcheckAndEnableDataCallAfterEmergencyCallDropped()
Check and enable data call after an emergency call is dropped if it's not in ECM

        if (mIsInEmergencyCall) {
            mIsInEmergencyCall = false;
            String inEcm=SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE, "false");
            if (Phone.DEBUG_PHONE) {
                log("checkAndEnableDataCallAfterEmergencyCallDropped,inEcm=" + inEcm);
            }
            if (inEcm.compareTo("false") == 0) {
                // Re-initiate data connection
                mPhone.mDcTracker.setInternalDataEnabled(true);
            }
        }
    
private com.android.internal.telephony.ConnectioncheckMtFindNewRinging(com.android.internal.telephony.DriverCall dc, int i)
Check the MT call to see if it's a new ring or a unknown connection.


        Connection newRinging = null;

        // it's a ringing call
        if (mConnections[i].getCall() == mRingingCall) {
            newRinging = mConnections[i];
            if (Phone.DEBUG_PHONE) log("Notify new ring " + dc);
        } else {
            // Something strange happened: a call which is neither
            // a ringing call nor the one we created. It could be the
            // call collision result from RIL
            Rlog.e(LOG_TAG,"Phantom call appeared " + dc);
            // If it's a connected call, set the connect time so that
            // it's non-zero.  It may not be accurate, but at least
            // it won't appear as a Missed Call.
            if (dc.state != DriverCall.State.ALERTING
                && dc.state != DriverCall.State.DIALING) {
                mConnections[i].onConnectedInOrOut();
                if (dc.state == DriverCall.State.HOLDING) {
                    // We've transitioned into HOLDING
                    mConnections[i].onStartedHolding();
                }
            }
        }
        return newRinging;
    
voidclearDisconnected()

        internalClearDisconnected();

        updatePhoneState();
        mPhone.notifyPreciseCallStateChanged();
    
voidconference()

        // Should we be checking state?
        flashAndSetGenericTrue();
    
com.android.internal.telephony.Connectiondial(java.lang.String dialString, int clirMode)
clirMode is one of the CLIR_ constants

        // note that this triggers call state changed notif
        clearDisconnected();

        if (!canDial()) {
            throw new CallStateException("cannot dial in current state");
        }

        TelephonyManager tm =
                (TelephonyManager) mPhone.getContext().getSystemService(Context.TELEPHONY_SERVICE);
        String origNumber = dialString;
        String operatorIsoContry = tm.getNetworkCountryIsoForPhone(mPhone.getPhoneId());
        String simIsoContry = tm.getSimCountryIsoForPhone(mPhone.getPhoneId());
        boolean internationalRoaming = !TextUtils.isEmpty(operatorIsoContry)
                && !TextUtils.isEmpty(simIsoContry)
                && !simIsoContry.equals(operatorIsoContry);
        if (internationalRoaming) {
            if ("us".equals(simIsoContry)) {
                internationalRoaming = internationalRoaming && !"vi".equals(operatorIsoContry);
            } else if ("vi".equals(simIsoContry)) {
                internationalRoaming = internationalRoaming && !"us".equals(operatorIsoContry);
            }
        }
        if (internationalRoaming) {
            dialString = convertNumberIfNecessary(mPhone, dialString);
        }

        String inEcm=SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE, "false");
        boolean isPhoneInEcmMode = inEcm.equals("true");
        boolean isEmergencyCall =
                PhoneNumberUtils.isLocalEmergencyNumber(mPhone.getContext(), dialString);

        // Cancel Ecm timer if a second emergency call is originating in Ecm mode
        if (isPhoneInEcmMode && isEmergencyCall) {
            handleEcmTimer(CDMAPhone.CANCEL_ECM_TIMER);
        }

        // We are initiating a call therefore even if we previously
        // didn't know the state (i.e. Generic was true) we now know
        // and therefore can set Generic to false.
        mForegroundCall.setGeneric(false);

        // The new call must be assigned to the foreground call.
        // That call must be idle, so place anything that's
        // there on hold
        if (mForegroundCall.getState() == CdmaCall.State.ACTIVE) {
            return dialThreeWay(dialString);
        }

        mPendingMO = new CdmaConnection(mPhone.getContext(), checkForTestEmergencyNumber(dialString),
                this, mForegroundCall);
        mHangupPendingMO = false;

        if ( mPendingMO.getAddress() == null || mPendingMO.getAddress().length() == 0
                || mPendingMO.getAddress().indexOf(PhoneNumberUtils.WILD) >= 0 ) {
            // Phone number is invalid
            mPendingMO.mCause = DisconnectCause.INVALID_NUMBER;

            // handlePollCalls() will notice this call not present
            // and will mark it as dropped.
            pollCallsWhenSafe();
        } else {
            // Always unmute when initiating a new call
            setMute(false);

            // Check data call
            disableDataCallInEmergencyCall(dialString);

            // In Ecm mode, if another emergency call is dialed, Ecm mode will not exit.
            if(!isPhoneInEcmMode || (isPhoneInEcmMode && isEmergencyCall)) {
                mCi.dial(mPendingMO.getAddress(), clirMode, obtainCompleteMessage());
            } else {
                mPhone.exitEmergencyCallbackMode();
                mPhone.setOnEcbModeExitResponse(this,EVENT_EXIT_ECM_RESPONSE_CDMA, null);
                mPendingCallClirMode=clirMode;
                mPendingCallInEcm=true;
            }
        }

        if (mNumberConverted) {
            mPendingMO.setConverted(origNumber);
            mNumberConverted = false;
        }

        updatePhoneState();
        mPhone.notifyPreciseCallStateChanged();

        return mPendingMO;
    
com.android.internal.telephony.Connectiondial(java.lang.String dialString)

        return dial(dialString, CommandsInterface.CLIR_DEFAULT);
    
private com.android.internal.telephony.ConnectiondialThreeWay(java.lang.String dialString)

        if (!mForegroundCall.isIdle()) {
            // Check data call
            disableDataCallInEmergencyCall(dialString);

            // Attach the new connection to foregroundCall
            mPendingMO = new CdmaConnection(mPhone.getContext(),
                                checkForTestEmergencyNumber(dialString), this, mForegroundCall);
            // Some network need a empty flash before sending the normal one
            m3WayCallFlashDelay = mPhone.getContext().getResources()
                    .getInteger(com.android.internal.R.integer.config_cdma_3waycall_flash_delay);
            if (m3WayCallFlashDelay > 0) {
                mCi.sendCDMAFeatureCode("", obtainMessage(EVENT_THREE_WAY_DIAL_BLANK_FLASH));
            } else {
                mCi.sendCDMAFeatureCode(mPendingMO.getAddress(),
                        obtainMessage(EVENT_THREE_WAY_DIAL_L2_RESULT_CDMA));
            }
            return mPendingMO;
        }
        return null;
    
private voiddisableDataCallInEmergencyCall(java.lang.String dialString)
Disable data call when emergency call is connected

        if (PhoneNumberUtils.isLocalEmergencyNumber(mPhone.getContext(), dialString)) {
            if (Phone.DEBUG_PHONE) log("disableDataCallInEmergencyCall");
            mIsInEmergencyCall = true;
            mPhone.mDcTracker.setInternalDataEnabled(false);
        }
    
public voiddispose()

        Rlog.d(LOG_TAG, "CdmaCallTracker dispose");
        mCi.unregisterForLineControlInfo(this);
        mCi.unregisterForCallStateChanged(this);
        mCi.unregisterForOn(this);
        mCi.unregisterForNotAvailable(this);
        mCi.unregisterForCallWaitingInfo(this);

        clearDisconnected();

    
public voiddump(java.io.FileDescriptor fd, java.io.PrintWriter pw, java.lang.String[] args)

        pw.println("GsmCallTracker extends:");
        super.dump(fd, pw, args);
        pw.println("droppedDuringPoll: length=" + mConnections.length);
        for(int i=0; i < mConnections.length; i++) {
            pw.printf(" mConnections[%d]=%s\n", i, mConnections[i]);
        }
        pw.println(" mVoiceCallEndedRegistrants=" + mVoiceCallEndedRegistrants);
        pw.println(" mVoiceCallStartedRegistrants=" + mVoiceCallStartedRegistrants);
        pw.println(" mCallWaitingRegistrants=" + mCallWaitingRegistrants);
        pw.println("droppedDuringPoll: size=" + mDroppedDuringPoll.size());
        for(int i = 0; i < mDroppedDuringPoll.size(); i++) {
            pw.printf( " mDroppedDuringPoll[%d]=%s\n", i, mDroppedDuringPoll.get(i));
        }
        pw.println(" mRingingCall=" + mRingingCall);
        pw.println(" mForegroundCall=" + mForegroundCall);
        pw.println(" mBackgroundCall=" + mBackgroundCall);
        pw.println(" mPendingMO=" + mPendingMO);
        pw.println(" mHangupPendingMO=" + mHangupPendingMO);
        pw.println(" mPendingCallInEcm=" + mPendingCallInEcm);
        pw.println(" mIsInEmergencyCall=" + mIsInEmergencyCall);
        pw.println(" mPhone=" + mPhone);
        pw.println(" mDesiredMute=" + mDesiredMute);
        pw.println(" mPendingCallClirMode=" + mPendingCallClirMode);
        pw.println(" mState=" + mState);
        pw.println(" mIsEcmTimerCanceled=" + mIsEcmTimerCanceled);
    
voidexplicitCallTransfer()

        mCi.explicitCallTransfer(obtainCompleteMessage(EVENT_ECT_RESULT));
    
protected voidfinalize()

        Rlog.d(LOG_TAG, "CdmaCallTracker finalized");
    
private voidflashAndSetGenericTrue()

        mCi.sendCDMAFeatureCode("", obtainMessage(EVENT_SWITCH_RESULT));

        // Set generic to true because in CDMA it is not known what
        // the status of the call is after a call waiting is answered,
        // 3 way call merged or a switch between calls.
        mForegroundCall.setGeneric(true);
        mPhone.notifyPreciseCallStateChanged();
    
CdmaConnectiongetConnectionByIndex(CdmaCall call, int index)

        int count = call.mConnections.size();
        for (int i = 0; i < count; i++) {
            CdmaConnection cn = (CdmaConnection)call.mConnections.get(i);
            if (cn.getCDMAIndex() == index) {
                return cn;
            }
        }

        return null;
    
booleangetMute()

        return mDesiredMute;
    
public PhoneConstants.StategetState()

        return mState;
    
private voidhandleCallWaitingInfo(CdmaCallWaitingNotification cw)

        // Check how many connections in foregroundCall.
        // If the connection in foregroundCall is more
        // than one, then the connection information is
        // not reliable anymore since it means either
        // call waiting is connected or 3 way call is
        // dialed before, so set generic.
        if (mForegroundCall.mConnections.size() > 1 ) {
            mForegroundCall.setGeneric(true);
        }

        // Create a new CdmaConnection which attaches itself to ringingCall.
        mRingingCall.setGeneric(false);
        new CdmaConnection(mPhone.getContext(), cw, this, mRingingCall);
        updatePhoneState();

        // Finally notify application
        notifyCallWaitingInfo(cw);
    
private voidhandleEcmTimer(int action)
Handle Ecm timer to be canceled or re-started

        mPhone.handleTimerInEmergencyCallbackMode(action);
        switch(action) {
        case CDMAPhone.CANCEL_ECM_TIMER: mIsEcmTimerCanceled = true; break;
        case CDMAPhone.RESTART_ECM_TIMER: mIsEcmTimerCanceled = false; break;
        default:
            Rlog.e(LOG_TAG, "handleEcmTimer, unsupported action " + action);
        }
    
public voidhandleMessage(android.os.Message msg)

        AsyncResult ar;

        if (!mPhone.mIsTheCurrentActivePhone) {
            Rlog.w(LOG_TAG, "Ignoring events received on inactive CdmaPhone");
            return;
        }
        switch (msg.what) {
            case EVENT_POLL_CALLS_RESULT:{
                Rlog.d(LOG_TAG, "Event EVENT_POLL_CALLS_RESULT Received");
                ar = (AsyncResult)msg.obj;

                if(msg == mLastRelevantPoll) {
                    if(DBG_POLL) log(
                            "handle EVENT_POLL_CALL_RESULT: set needsPoll=F");
                    mNeedsPoll = false;
                    mLastRelevantPoll = null;
                    handlePollCalls((AsyncResult)msg.obj);
                }
            }
            break;

            case EVENT_OPERATION_COMPLETE:
                operationComplete();
            break;

            case EVENT_SWITCH_RESULT:
                 // In GSM call operationComplete() here which gets the
                 // current call list. But in CDMA there is no list so
                 // there is nothing to do.
            break;

            case EVENT_GET_LAST_CALL_FAIL_CAUSE:
                int causeCode;
                ar = (AsyncResult)msg.obj;

                operationComplete();

                if (ar.exception != null) {
                    // An exception occurred...just treat the disconnect
                    // cause as "normal"
                    causeCode = CallFailCause.NORMAL_CLEARING;
                    Rlog.i(LOG_TAG,
                            "Exception during getLastCallFailCause, assuming normal disconnect");
                } else {
                    causeCode = ((int[])ar.result)[0];
                }

                for (int i = 0, s =  mDroppedDuringPoll.size()
                        ; i < s ; i++
                ) {
                    CdmaConnection conn = mDroppedDuringPoll.get(i);

                    conn.onRemoteDisconnect(causeCode);
                }

                updatePhoneState();

                mPhone.notifyPreciseCallStateChanged();
                mDroppedDuringPoll.clear();
            break;

            case EVENT_REPOLL_AFTER_DELAY:
            case EVENT_CALL_STATE_CHANGE:
                pollCallsWhenSafe();
            break;

            case EVENT_RADIO_AVAILABLE:
                handleRadioAvailable();
            break;

            case EVENT_RADIO_NOT_AVAILABLE:
                handleRadioNotAvailable();
            break;

            case EVENT_EXIT_ECM_RESPONSE_CDMA:
                // no matter the result, we still do the same here
                if (mPendingCallInEcm) {
                    mCi.dial(mPendingMO.getAddress(), mPendingCallClirMode, obtainCompleteMessage());
                    mPendingCallInEcm = false;
                }
                mPhone.unsetOnEcbModeExitResponse(this);
            break;

            case EVENT_CALL_WAITING_INFO_CDMA:
               ar = (AsyncResult)msg.obj;
               if (ar.exception == null) {
                   handleCallWaitingInfo((CdmaCallWaitingNotification)ar.result);
                   Rlog.d(LOG_TAG, "Event EVENT_CALL_WAITING_INFO_CDMA Received");
               }
            break;

            case EVENT_THREE_WAY_DIAL_L2_RESULT_CDMA:
                ar = (AsyncResult)msg.obj;
                if (ar.exception == null) {
                    // Assume 3 way call is connected
                    mPendingMO.onConnectedInOrOut();
                    mPendingMO = null;
                }
            break;

            case EVENT_THREE_WAY_DIAL_BLANK_FLASH:
                ar = (AsyncResult) msg.obj;
                if (ar.exception == null) {
                    postDelayed(
                            new Runnable() {
                                public void run() {
                                    if (mPendingMO != null) {
                                        mCi.sendCDMAFeatureCode(mPendingMO.getAddress(),
                                                obtainMessage(EVENT_THREE_WAY_DIAL_L2_RESULT_CDMA));
                                    }
                                }
                            }, m3WayCallFlashDelay);
                } else {
                    mPendingMO = null;
                    Rlog.w(LOG_TAG, "exception happened on Blank Flash for 3-way call");
                }
            break;

            default:{
               throw new RuntimeException("unexpected event not handled");
            }
        }
    
protected voidhandlePollCalls(android.os.AsyncResult ar)

        List polledCalls;

        if (ar.exception == null) {
            polledCalls = (List)ar.result;
        } else if (isCommandExceptionRadioNotAvailable(ar.exception)) {
            // just a dummy empty ArrayList to cause the loop
            // to hang up all the calls
            polledCalls = new ArrayList();
        } else {
            // Radio probably wasn't ready--try again in a bit
            // But don't keep polling if the channel is closed
            pollCallsAfterDelay();
            return;
        }

        Connection newRinging = null; //or waiting
        Connection newUnknown = null;
        boolean hasNonHangupStateChanged = false;   // Any change besides
                                                    // a dropped connection
        boolean hasAnyCallDisconnected = false;
        boolean needsPollDelay = false;
        boolean unknownConnectionAppeared = false;

        for (int i = 0, curDC = 0, dcSize = polledCalls.size()
                ; i < mConnections.length; i++) {
            CdmaConnection conn = mConnections[i];
            DriverCall dc = null;

            // polledCall list is sparse
            if (curDC < dcSize) {
                dc = (DriverCall) polledCalls.get(curDC);

                if (dc.index == i+1) {
                    curDC++;
                } else {
                    dc = null;
                }
            }

            if (DBG_POLL) log("poll: conn[i=" + i + "]=" +
                    conn+", dc=" + dc);

            if (conn == null && dc != null) {
                // Connection appeared in CLCC response that we don't know about
                if (mPendingMO != null && mPendingMO.compareTo(dc)) {

                    if (DBG_POLL) log("poll: pendingMO=" + mPendingMO);

                    // It's our pending mobile originating call
                    mConnections[i] = mPendingMO;
                    mPendingMO.mIndex = i;
                    mPendingMO.update(dc);
                    mPendingMO = null;

                    // Someone has already asked to hangup this call
                    if (mHangupPendingMO) {
                        mHangupPendingMO = false;
                        // Re-start Ecm timer when an uncompleted emergency call ends
                        if (mIsEcmTimerCanceled) {
                            handleEcmTimer(CDMAPhone.RESTART_ECM_TIMER);
                        }

                        try {
                            if (Phone.DEBUG_PHONE) log(
                                    "poll: hangupPendingMO, hangup conn " + i);
                            hangup(mConnections[i]);
                        } catch (CallStateException ex) {
                            Rlog.e(LOG_TAG, "unexpected error on hangup");
                        }

                        // Do not continue processing this poll
                        // Wait for hangup and repoll
                        return;
                    }
                } else {
                    if (Phone.DEBUG_PHONE) {
                        log("pendingMo=" + mPendingMO + ", dc=" + dc);
                    }
                    mConnections[i] = new CdmaConnection(mPhone.getContext(), dc, this, i);

                    Connection hoConnection = getHoConnection(dc);
                    if (hoConnection != null) {
                        // Single Radio Voice Call Continuity (SRVCC) completed
                        mConnections[i].migrateFrom(hoConnection);
                        mHandoverConnections.remove(hoConnection);
                        mPhone.notifyHandoverStateChanged(mConnections[i]);
                    } else {
                        // find if the MT call is a new ring or unknown connection
                        newRinging = checkMtFindNewRinging(dc,i);
                        if (newRinging == null) {
                            unknownConnectionAppeared = true;
                            newUnknown = mConnections[i];
                        }
                    }
                    checkAndEnableDataCallAfterEmergencyCallDropped();
                }
                hasNonHangupStateChanged = true;
            } else if (conn != null && dc == null) {
                // This case means the RIL has no more active call anymore and
                // we need to clean up the foregroundCall and ringingCall.
                // Loop through foreground call connections as
                // it contains the known logical connections.
                int count = mForegroundCall.mConnections.size();
                for (int n = 0; n < count; n++) {
                    if (Phone.DEBUG_PHONE) log("adding fgCall cn " + n + " to droppedDuringPoll");
                    CdmaConnection cn = (CdmaConnection)mForegroundCall.mConnections.get(n);
                    mDroppedDuringPoll.add(cn);
                }
                count = mRingingCall.mConnections.size();
                // Loop through ringing call connections as
                // it may contain the known logical connections.
                for (int n = 0; n < count; n++) {
                    if (Phone.DEBUG_PHONE) log("adding rgCall cn " + n + " to droppedDuringPoll");
                    CdmaConnection cn = (CdmaConnection)mRingingCall.mConnections.get(n);
                    mDroppedDuringPoll.add(cn);
                }
                mForegroundCall.setGeneric(false);
                mRingingCall.setGeneric(false);

                // Re-start Ecm timer when the connected emergency call ends
                if (mIsEcmTimerCanceled) {
                    handleEcmTimer(CDMAPhone.RESTART_ECM_TIMER);
                }
                // If emergency call is not going through while dialing
                checkAndEnableDataCallAfterEmergencyCallDropped();

                // Dropped connections are removed from the CallTracker
                // list but kept in the Call list
                mConnections[i] = null;
            } else if (conn != null && dc != null) { /* implicit conn.compareTo(dc) */
                // Call collision case
                if (conn.isIncoming() != dc.isMT) {
                    if (dc.isMT == true){
                        // Mt call takes precedence than Mo,drops Mo
                        mDroppedDuringPoll.add(conn);
                        // find if the MT call is a new ring or unknown connection
                        newRinging = checkMtFindNewRinging(dc,i);
                        if (newRinging == null) {
                            unknownConnectionAppeared = true;
                            newUnknown = conn;
                        }
                        checkAndEnableDataCallAfterEmergencyCallDropped();
                    } else {
                        // Call info stored in conn is not consistent with the call info from dc.
                        // We should follow the rule of MT calls taking precedence over MO calls
                        // when there is conflict, so here we drop the call info from dc and
                        // continue to use the call info from conn, and only take a log.
                        Rlog.e(LOG_TAG,"Error in RIL, Phantom call appeared " + dc);
                    }
                } else {
                    boolean changed;
                    changed = conn.update(dc);
                    hasNonHangupStateChanged = hasNonHangupStateChanged || changed;
                }
            }

            if (REPEAT_POLLING) {
                if (dc != null) {
                    // FIXME with RIL, we should not need this anymore
                    if ((dc.state == DriverCall.State.DIALING
                            /*&& cm.getOption(cm.OPTION_POLL_DIALING)*/)
                        || (dc.state == DriverCall.State.ALERTING
                            /*&& cm.getOption(cm.OPTION_POLL_ALERTING)*/)
                        || (dc.state == DriverCall.State.INCOMING
                            /*&& cm.getOption(cm.OPTION_POLL_INCOMING)*/)
                        || (dc.state == DriverCall.State.WAITING
                            /*&& cm.getOption(cm.OPTION_POLL_WAITING)*/)
                    ) {
                        // Sometimes there's no unsolicited notification
                        // for state transitions
                        needsPollDelay = true;
                    }
                }
            }
        }

        // This is the first poll after an ATD.
        // We expect the pending call to appear in the list
        // If it does not, we land here
        if (mPendingMO != null) {
            Rlog.d(LOG_TAG,"Pending MO dropped before poll fg state:"
                            + mForegroundCall.getState());

            mDroppedDuringPoll.add(mPendingMO);
            mPendingMO = null;
            mHangupPendingMO = false;
            if( mPendingCallInEcm) {
                mPendingCallInEcm = false;
            }
        }

        if (newRinging != null) {
            mPhone.notifyNewRingingConnection(newRinging);
        }

        // clear the "local hangup" and "missed/rejected call"
        // cases from the "dropped during poll" list
        // These cases need no "last call fail" reason
        for (int i = mDroppedDuringPoll.size() - 1; i >= 0 ; i--) {
            CdmaConnection conn = mDroppedDuringPoll.get(i);

            if (conn.isIncoming() && conn.getConnectTime() == 0) {
                // Missed or rejected call
                int cause;
                if (conn.mCause == DisconnectCause.LOCAL) {
                    cause = DisconnectCause.INCOMING_REJECTED;
                } else {
                    cause = DisconnectCause.INCOMING_MISSED;
                }

                if (Phone.DEBUG_PHONE) {
                    log("missed/rejected call, conn.cause=" + conn.mCause);
                    log("setting cause to " + cause);
                }
                mDroppedDuringPoll.remove(i);
                hasAnyCallDisconnected |= conn.onDisconnect(cause);
            } else if (conn.mCause == DisconnectCause.LOCAL
                    || conn.mCause == DisconnectCause.INVALID_NUMBER) {
                mDroppedDuringPoll.remove(i);
                hasAnyCallDisconnected |= conn.onDisconnect(conn.mCause);
            }
        }

        /* Disconnect any pending Handover connections */
        for (Connection hoConnection : mHandoverConnections) {
            log("handlePollCalls - disconnect hoConn= " + hoConnection.toString());
            ((ImsPhoneConnection)hoConnection).onDisconnect(DisconnectCause.NOT_VALID);
            mHandoverConnections.remove(hoConnection);
        }

        // Any non-local disconnects: determine cause
        if (mDroppedDuringPoll.size() > 0) {
            mCi.getLastCallFailCause(
                obtainNoPollCompleteMessage(EVENT_GET_LAST_CALL_FAIL_CAUSE));
        }

        if (needsPollDelay) {
            pollCallsAfterDelay();
        }

        // Cases when we can no longer keep disconnected Connection's
        // with their previous calls
        // 1) the phone has started to ring
        // 2) A Call/Connection object has changed state...
        //    we may have switched or held or answered (but not hung up)
        if (newRinging != null || hasNonHangupStateChanged || hasAnyCallDisconnected) {
            internalClearDisconnected();
        }

        updatePhoneState();

        if (unknownConnectionAppeared) {
            mPhone.notifyUnknownConnection(newUnknown);
        }

        if (hasNonHangupStateChanged || newRinging != null || hasAnyCallDisconnected) {
            mPhone.notifyPreciseCallStateChanged();
        }

        //dumpState();
    
private voidhandleRadioNotAvailable()

        // handlePollCalls will clear out its
        // call list when it gets the CommandException
        // error result from this
        pollCallsWhenSafe();
    
voidhangup(CdmaConnection conn)

        if (conn.mOwner != this) {
            throw new CallStateException ("CdmaConnection " + conn
                                    + "does not belong to CdmaCallTracker " + this);
        }

        if (conn == mPendingMO) {
            // We're hanging up an outgoing call that doesn't have it's
            // GSM index assigned yet

            if (Phone.DEBUG_PHONE) log("hangup: set hangupPendingMO to true");
            mHangupPendingMO = true;
        } else if ((conn.getCall() == mRingingCall)
                && (mRingingCall.getState() == CdmaCall.State.WAITING)) {
            // Handle call waiting hang up case.
            //
            // The ringingCall state will change to IDLE in CdmaCall.detach
            // if the ringing call connection size is 0. We don't specifically
            // set the ringing call state to IDLE here to avoid a race condition
            // where a new call waiting could get a hang up from an old call
            // waiting ringingCall.
            //
            // PhoneApp does the call log itself since only PhoneApp knows
            // the hangup reason is user ignoring or timing out. So conn.onDisconnect()
            // is not called here. Instead, conn.onLocalDisconnect() is called.
            conn.onLocalDisconnect();
            updatePhoneState();
            mPhone.notifyPreciseCallStateChanged();
            return;
        } else {
            try {
                mCi.hangupConnection (conn.getCDMAIndex(), obtainCompleteMessage());
            } catch (CallStateException ex) {
                // Ignore "connection not found"
                // Call may have hung up already
                Rlog.w(LOG_TAG,"CdmaCallTracker WARN: hangup() on absent connection "
                                + conn);
            }
        }

        conn.onHangupLocal();
    
voidhangup(CdmaCall call)

        if (call.getConnections().size() == 0) {
            throw new CallStateException("no connections in call");
        }

        if (call == mRingingCall) {
            if (Phone.DEBUG_PHONE) log("(ringing) hangup waiting or background");
            mCi.hangupWaitingOrBackground(obtainCompleteMessage());
        } else if (call == mForegroundCall) {
            if (call.isDialingOrAlerting()) {
                if (Phone.DEBUG_PHONE) {
                    log("(foregnd) hangup dialing or alerting...");
                }
                hangup((CdmaConnection)(call.getConnections().get(0)));
            } else {
                hangupForegroundResumeBackground();
            }
        } else if (call == mBackgroundCall) {
            if (mRingingCall.isRinging()) {
                if (Phone.DEBUG_PHONE) {
                    log("hangup all conns in background call");
                }
                hangupAllConnections(call);
            } else {
                hangupWaitingOrBackground();
            }
        } else {
            throw new RuntimeException ("CdmaCall " + call +
                    "does not belong to CdmaCallTracker " + this);
        }

        call.onHangupLocal();
        mPhone.notifyPreciseCallStateChanged();
    
voidhangupAllConnections(CdmaCall call)

        try {
            int count = call.mConnections.size();
            for (int i = 0; i < count; i++) {
                CdmaConnection cn = (CdmaConnection)call.mConnections.get(i);
                mCi.hangupConnection(cn.getCDMAIndex(), obtainCompleteMessage());
            }
        } catch (CallStateException ex) {
            Rlog.e(LOG_TAG, "hangupConnectionByIndex caught " + ex);
        }
    
voidhangupConnectionByIndex(CdmaCall call, int index)

        int count = call.mConnections.size();
        for (int i = 0; i < count; i++) {
            CdmaConnection cn = (CdmaConnection)call.mConnections.get(i);
            if (cn.getCDMAIndex() == index) {
                mCi.hangupConnection(index, obtainCompleteMessage());
                return;
            }
        }

        throw new CallStateException("no gsm index found");
    
voidhangupForegroundResumeBackground()

        if (Phone.DEBUG_PHONE) log("hangupForegroundResumeBackground");
        mCi.hangupForegroundResumeBackground(obtainCompleteMessage());
    
voidhangupWaitingOrBackground()

        if (Phone.DEBUG_PHONE) log("hangupWaitingOrBackground");
        mCi.hangupWaitingOrBackground(obtainCompleteMessage());
    
private voidinternalClearDisconnected()

        mRingingCall.clearDisconnected();
        mForegroundCall.clearDisconnected();
        mBackgroundCall.clearDisconnected();
    
booleanisInEmergencyCall()
Check if current call is in emergency call

return
true if it is in emergency call false if it is not in emergency call

        return mIsInEmergencyCall;
    
protected voidlog(java.lang.String msg)

        Rlog.d(LOG_TAG, "[CdmaCallTracker] " + msg);
    
private voidnotifyCallWaitingInfo(CdmaCallWaitingNotification obj)

        if (mCallWaitingRegistrants != null) {
            mCallWaitingRegistrants.notifyRegistrants(new AsyncResult(null, obj, null));
        }
    
private android.os.MessageobtainCompleteMessage()
Obtain a message to use for signalling "invoke getCurrentCalls() when this operation and all other pending operations are complete

        return obtainCompleteMessage(EVENT_OPERATION_COMPLETE);
    
private android.os.MessageobtainCompleteMessage(int what)
Obtain a message to use for signalling "invoke getCurrentCalls() when this operation and all other pending operations are complete

        mPendingOperations++;
        mLastRelevantPoll = null;
        mNeedsPoll = true;

        if (DBG_POLL) log("obtainCompleteMessage: pendingOperations=" +
                mPendingOperations + ", needsPoll=" + mNeedsPoll);

        return obtainMessage(what);
    
private voidoperationComplete()

        mPendingOperations--;

        if (DBG_POLL) log("operationComplete: pendingOperations=" +
                mPendingOperations + ", needsPoll=" + mNeedsPoll);

        if (mPendingOperations == 0 && mNeedsPoll) {
            mLastRelevantPoll = obtainMessage(EVENT_POLL_CALLS_RESULT);
            mCi.getCurrentCalls(mLastRelevantPoll);
        } else if (mPendingOperations < 0) {
            // this should never happen
            Rlog.e(LOG_TAG,"CdmaCallTracker.pendingOperations < 0");
            mPendingOperations = 0;
        }
    
public voidregisterForCallWaiting(android.os.Handler h, int what, java.lang.Object obj)

        Registrant r = new Registrant (h, what, obj);
        mCallWaitingRegistrants.add(r);
    
public voidregisterForVoiceCallEnded(android.os.Handler h, int what, java.lang.Object obj)

        Registrant r = new Registrant(h, what, obj);
        mVoiceCallEndedRegistrants.add(r);
    
public voidregisterForVoiceCallStarted(android.os.Handler h, int what, java.lang.Object obj)

        Registrant r = new Registrant(h, what, obj);
        mVoiceCallStartedRegistrants.add(r);
        // Notify if in call when registering
        if (mState != PhoneConstants.State.IDLE) {
            r.notifyRegistrant(new AsyncResult(null, null, null));
        }
    
voidrejectCall()

        // AT+CHLD=0 means "release held or UDUB"
        // so if the phone isn't ringing, this could hang up held
        if (mRingingCall.getState().isRinging()) {
            mCi.rejectCall(obtainCompleteMessage());
        } else {
            throw new CallStateException("phone not ringing");
        }
    
voidseparate(CdmaConnection conn)

        if (conn.mOwner != this) {
            throw new CallStateException ("CdmaConnection " + conn
                                    + "does not belong to CdmaCallTracker " + this);
        }
        try {
            mCi.separateConnection (conn.getCDMAIndex(),
                obtainCompleteMessage(EVENT_SEPARATE_RESULT));
        } catch (CallStateException ex) {
            // Ignore "connection not found"
            // Call may have hung up already
            Rlog.w(LOG_TAG,"CdmaCallTracker WARN: separate() on absent connection "
                          + conn);
        }
    
voidsetMute(boolean mute)

        mDesiredMute = mute;
        mCi.setMute(mDesiredMute, null);
    
voidswitchWaitingOrHoldingAndActive()

        // Should we bother with this check?
        if (mRingingCall.getState() == CdmaCall.State.INCOMING) {
            throw new CallStateException("cannot be in the incoming state");
        } else if (mForegroundCall.getConnections().size() > 1) {
            flashAndSetGenericTrue();
        } else {
            // Send a flash command to CDMA network for putting the other party on hold.
            // For CDMA networks which do not support this the user would just hear a beep
            // from the network. For CDMA networks which do support it will put the other
            // party on hold.
            mCi.sendCDMAFeatureCode("", obtainMessage(EVENT_SWITCH_RESULT));
        }
    
public voidunregisterForCallWaiting(android.os.Handler h)

        mCallWaitingRegistrants.remove(h);
    
public voidunregisterForVoiceCallEnded(android.os.Handler h)

        mVoiceCallEndedRegistrants.remove(h);
    
public voidunregisterForVoiceCallStarted(android.os.Handler h)

        mVoiceCallStartedRegistrants.remove(h);
    
private voidupdatePhoneState()

        PhoneConstants.State oldState = mState;

        if (mRingingCall.isRinging()) {
            mState = PhoneConstants.State.RINGING;
        } else if (mPendingMO != null ||
                !(mForegroundCall.isIdle() && mBackgroundCall.isIdle())) {
            mState = PhoneConstants.State.OFFHOOK;
        } else {
            ImsPhone imsPhone = (ImsPhone)mPhone.getImsPhone();
            if ( mState == PhoneConstants.State.OFFHOOK && (imsPhone != null)){
                imsPhone.callEndCleanupHandOverCallIfAny();
            }
            mState = PhoneConstants.State.IDLE;
        }

        if (mState == PhoneConstants.State.IDLE && oldState != mState) {
            mVoiceCallEndedRegistrants.notifyRegistrants(
                new AsyncResult(null, null, null));
        } else if (oldState == PhoneConstants.State.IDLE && oldState != mState) {
            mVoiceCallStartedRegistrants.notifyRegistrants (
                    new AsyncResult(null, null, null));
        }
        if (Phone.DEBUG_PHONE) {
            log("update phone state, old=" + oldState + " new="+ mState);
        }
        if (mState != oldState) {
            mPhone.notifyPhoneStateChanged();
        }