1 /*
2  * Copyright (c) 2014, The Linux Foundation. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are
6  * met:
7  *    * Redistributions of source code must retain the above copyright
8         notice, this list of conditions and the following disclaimer.
9  *    * Redistributions in binary form must reproduce the above
10  *      copyright notice, this list of conditions and the following
11  *      disclaimer in the documentation and/or other materials provided
12  *      with the distribution.
13  *    * Neither the name of The Linux Foundation nor the names of its
14  *      contributors may be used to endorse or promote products derived
15  *      from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 package com.android.ims;
31 
32 import android.compat.annotation.UnsupportedAppUsage;
33 import android.os.Build;
34 import android.os.RemoteException;
35 import android.telephony.ims.ImsReasonInfo;
36 
37 import com.android.ims.internal.IImsEcbm;
38 import com.android.ims.internal.IImsEcbmListener;
39 import com.android.telephony.Rlog;
40 
41 /**
42  * Provides APIs for the modem to communicate the CDMA Emergency Callback Mode status for IMS.
43  *
44  * @hide
45  */
46 public class ImsEcbm {
47     private static final String TAG = "ImsEcbm";
48     private static final boolean DBG = true;
49 
50     private final IImsEcbm miEcbm;
51 
ImsEcbm(IImsEcbm iEcbm)52     public ImsEcbm(IImsEcbm iEcbm) {
53         if (DBG) Rlog.d(TAG, "ImsEcbm created");
54         miEcbm = iEcbm;
55     }
56 
setEcbmStateListener(ImsEcbmStateListener ecbmListener)57     public void setEcbmStateListener(ImsEcbmStateListener ecbmListener) throws RemoteException {
58             miEcbm.setListener(ecbmListener != null ?
59                     new ImsEcbmListenerProxy(ecbmListener) : null);
60     }
61 
62     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
exitEmergencyCallbackMode()63     public void exitEmergencyCallbackMode() throws ImsException {
64         try {
65             miEcbm.exitEmergencyCallbackMode();
66         } catch (RemoteException e) {
67             throw new ImsException("exitEmergencyCallbackMode()", e,
68                     ImsReasonInfo.CODE_LOCAL_IMS_SERVICE_DOWN);
69         }
70     }
71 
isBinderAlive()72     public boolean isBinderAlive() {
73         return miEcbm.asBinder().isBinderAlive();
74     }
75 
76     /**
77      * Adapter class for {@link IImsEcbmListener}.
78      */
79     private static class ImsEcbmListenerProxy extends IImsEcbmListener.Stub {
80         private final ImsEcbmStateListener mListener;
81 
ImsEcbmListenerProxy(ImsEcbmStateListener listener)82         public ImsEcbmListenerProxy(ImsEcbmStateListener listener) {
83             mListener = listener;
84         }
85 
86         @Override
enteredECBM()87         public void enteredECBM() {
88             if (DBG) Rlog.d(TAG, "enteredECBM ::");
89 
90             if (mListener != null) {
91                 mListener.onECBMEntered();
92             }
93         }
94 
95         @Override
exitedECBM()96         public void exitedECBM() {
97             if (DBG) Rlog.d(TAG, "exitedECBM ::");
98 
99             if (mListener != null) {
100                 mListener.onECBMExited();
101             }
102         }
103     }
104 }
105