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      1 //
      2 //  Copyright (C) 2015 Google, Inc.
      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 #include "service/common/bluetooth/binder/IBluetoothCallback.h"
     18 
     19 #include <base/logging.h>
     20 #include <binder/Parcel.h>
     21 
     22 using android::IBinder;
     23 using android::Parcel;
     24 using android::sp;
     25 using android::status_t;
     26 
     27 namespace ipc {
     28 namespace binder {
     29 
     30 // static
     31 const char IBluetoothCallback::kServiceName[] =
     32     "bluetooth-callback-service";
     33 
     34 // BnBluetoothCallback (server) implementation
     35 // ========================================================
     36 
     37 status_t BnBluetoothCallback::onTransact(
     38     uint32_t code,
     39     const Parcel& data,
     40     Parcel* reply,
     41     uint32_t flags) {
     42   VLOG(2) << "IBluetoothCallback transaction: " << code;
     43   if (!data.checkInterface(this))
     44     return android::PERMISSION_DENIED;
     45 
     46   switch (code) {
     47     case ON_BLUETOOTH_STATE_CHANGE_TRANSACTION: {
     48       int prev_state, new_state;
     49       if (data.readInt32(&prev_state) != android::NO_ERROR ||
     50           data.readInt32(&new_state) != android::NO_ERROR)
     51         return android::NOT_ENOUGH_DATA;
     52 
     53       OnBluetoothStateChange(
     54           static_cast<bluetooth::AdapterState>(prev_state),
     55           static_cast<bluetooth::AdapterState>(new_state));
     56       return android::NO_ERROR;
     57     }
     58     default:
     59       return BBinder::onTransact(code, data, reply, flags);
     60   }
     61 }
     62 
     63 // BpBluetoothCallback (client) implementation
     64 // ========================================================
     65 
     66 BpBluetoothCallback::BpBluetoothCallback(const sp<IBinder>& impl)
     67   : BpInterface<IBluetoothCallback>(impl) {
     68 }
     69 
     70 void BpBluetoothCallback::OnBluetoothStateChange(
     71     bluetooth::AdapterState prev_state,
     72     bluetooth::AdapterState new_state) {
     73   Parcel data, reply;
     74 
     75   data.writeInterfaceToken(IBluetoothCallback::getInterfaceDescriptor());
     76   data.writeInt32(prev_state);
     77   data.writeInt32(new_state);
     78 
     79   remote()->transact(IBluetoothCallback::ON_BLUETOOTH_STATE_CHANGE_TRANSACTION,
     80                      data, &reply);
     81 }
     82 
     83 IMPLEMENT_META_INTERFACE(BluetoothCallback, IBluetoothCallback::kServiceName);
     84 
     85 }  // namespace binder
     86 }  // namespace ipc
     87