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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "ResultReceiver"
     18 
     19 #include <binder/IResultReceiver.h>
     20 
     21 #include <utils/Log.h>
     22 #include <binder/Parcel.h>
     23 #include <utils/String8.h>
     24 
     25 #include <private/binder/Static.h>
     26 
     27 namespace android {
     28 
     29 // ----------------------------------------------------------------------
     30 
     31 class BpResultReceiver : public BpInterface<IResultReceiver>
     32 {
     33 public:
     34     explicit BpResultReceiver(const sp<IBinder>& impl)
     35         : BpInterface<IResultReceiver>(impl)
     36     {
     37     }
     38 
     39     virtual void send(int32_t resultCode) {
     40         Parcel data;
     41         data.writeInterfaceToken(IResultReceiver::getInterfaceDescriptor());
     42         data.writeInt32(resultCode);
     43         remote()->transact(OP_SEND, data, NULL, IBinder::FLAG_ONEWAY);
     44     }
     45 };
     46 
     47 IMPLEMENT_META_INTERFACE(ResultReceiver, "com.android.internal.os.IResultReceiver");
     48 
     49 // ----------------------------------------------------------------------
     50 
     51 status_t BnResultReceiver::onTransact(
     52     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
     53 {
     54     switch(code) {
     55         case OP_SEND: {
     56             CHECK_INTERFACE(IResultReceiver, data, reply);
     57             int32_t resultCode = data.readInt32();
     58             send(resultCode);
     59             if (reply != NULL) {
     60                 reply->writeNoException();
     61             }
     62             return NO_ERROR;
     63         } break;
     64         default:
     65             return BBinder::onTransact(code, data, reply, flags);
     66     }
     67 }
     68 
     69 }; // namespace android
     70