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      1 /*
      2  * Copyright (C) 2013 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 #include <stdint.h>
     18 #include <sys/types.h>
     19 
     20 #include <binder/Parcel.h>
     21 #include <binder/IPCThreadState.h>
     22 #include <binder/IServiceManager.h>
     23 
     24 #include <input/IInputFlinger.h>
     25 
     26 namespace android {
     27 
     28 class BpInputFlinger : public BpInterface<IInputFlinger> {
     29 public:
     30     explicit BpInputFlinger(const sp<IBinder>& impl) :
     31             BpInterface<IInputFlinger>(impl) { }
     32 
     33     virtual void setInputWindows(const std::vector<InputWindowInfo>& inputInfo,
     34             const sp<ISetInputWindowsListener>& setInputWindowsListener) {
     35         Parcel data, reply;
     36         data.writeInterfaceToken(IInputFlinger::getInterfaceDescriptor());
     37 
     38         data.writeUint32(static_cast<uint32_t>(inputInfo.size()));
     39         for (const auto& info : inputInfo) {
     40             info.write(data);
     41         }
     42         data.writeStrongBinder(IInterface::asBinder(setInputWindowsListener));
     43 
     44         remote()->transact(BnInputFlinger::SET_INPUT_WINDOWS_TRANSACTION, data, &reply,
     45                 IBinder::FLAG_ONEWAY);
     46     }
     47 
     48     virtual void transferTouchFocus(const sp<IBinder>& fromToken, const sp<IBinder>& toToken) {
     49         Parcel data, reply;
     50         data.writeInterfaceToken(IInputFlinger::getInterfaceDescriptor());
     51 
     52         data.writeStrongBinder(fromToken);
     53         data.writeStrongBinder(toToken);
     54         remote()->transact(BnInputFlinger::TRANSFER_TOUCH_FOCUS, data, &reply,
     55                 IBinder::FLAG_ONEWAY);
     56     }
     57 
     58     virtual void registerInputChannel(const sp<InputChannel>& channel) {
     59         Parcel data, reply;
     60         data.writeInterfaceToken(IInputFlinger::getInterfaceDescriptor());
     61         channel->write(data);
     62         remote()->transact(BnInputFlinger::REGISTER_INPUT_CHANNEL_TRANSACTION, data, &reply);
     63     }
     64 
     65     virtual void unregisterInputChannel(const sp<InputChannel>& channel) {
     66         Parcel data, reply;
     67         data.writeInterfaceToken(IInputFlinger::getInterfaceDescriptor());
     68         channel->write(data);
     69         remote()->transact(BnInputFlinger::UNREGISTER_INPUT_CHANNEL_TRANSACTION, data, &reply);
     70     }
     71 };
     72 
     73 IMPLEMENT_META_INTERFACE(InputFlinger, "android.input.IInputFlinger");
     74 
     75 status_t BnInputFlinger::onTransact(
     76         uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
     77     switch(code) {
     78     case SET_INPUT_WINDOWS_TRANSACTION: {
     79         CHECK_INTERFACE(IInputFlinger, data, reply);
     80         size_t count = data.readUint32();
     81         if (count > data.dataSize()) {
     82             return BAD_VALUE;
     83         }
     84         std::vector<InputWindowInfo> handles;
     85         for (size_t i = 0; i < count; i++) {
     86             handles.push_back(InputWindowInfo::read(data));
     87         }
     88         const sp<ISetInputWindowsListener> setInputWindowsListener =
     89                 ISetInputWindowsListener::asInterface(data.readStrongBinder());
     90         setInputWindows(handles, setInputWindowsListener);
     91         break;
     92     }
     93     case REGISTER_INPUT_CHANNEL_TRANSACTION: {
     94         CHECK_INTERFACE(IInputFlinger, data, reply);
     95         sp<InputChannel> channel = new InputChannel();
     96         channel->read(data);
     97         registerInputChannel(channel);
     98         break;
     99     }
    100     case UNREGISTER_INPUT_CHANNEL_TRANSACTION: {
    101         CHECK_INTERFACE(IInputFlinger, data, reply);
    102         sp<InputChannel> channel = new InputChannel();
    103         channel->read(data);
    104         unregisterInputChannel(channel);
    105         break;
    106     }
    107     case TRANSFER_TOUCH_FOCUS: {
    108         CHECK_INTERFACE(IInputFlinger, data, reply);
    109         sp<IBinder> fromToken = data.readStrongBinder();
    110         sp<IBinder> toToken = data.readStrongBinder();
    111         transferTouchFocus(fromToken, toToken);
    112         break;
    113     }
    114     default:
    115         return BBinder::onTransact(code, data, reply, flags);
    116     }
    117     return NO_ERROR;
    118 }
    119 
    120 };
    121