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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  * Copyright (C) 2012-2013, The Linux Foundation. All rights reserved.
      4  *
      5  * Not a Contribution, Apache license notifications and license are
      6  * retained for attribution purposes only.
      7 
      8  * Licensed under the Apache License, Version 2.0 (the "License");
      9  * you may not use this file except in compliance with the License.
     10  * You may obtain a copy of the License at
     11  *
     12  *      http://www.apache.org/licenses/LICENSE-2.0
     13  *
     14  * Unless required by applicable law or agreed to in writing, software
     15  * distributed under the License is distributed on an "AS IS" BASIS,
     16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     17  * See the License for the specific language governing permissions and
     18  * limitations under the License.
     19  */
     20 
     21 #include <sys/types.h>
     22 #include <binder/Parcel.h>
     23 #include <binder/IBinder.h>
     24 #include <binder/IInterface.h>
     25 #include <utils/Errors.h>
     26 #include <IQClient.h>
     27 
     28 using namespace android;
     29 
     30 // ---------------------------------------------------------------------------
     31 // XXX: Since qservice currently runs as part of hwc instead of a standalone
     32 // process, the implementation below is overridden and the notifyCallback in
     33 // hwc_qclient is directly called.
     34 
     35 namespace qClient {
     36 
     37 enum {
     38     NOTIFY_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
     39 };
     40 
     41 class BpQClient : public BpInterface<IQClient>
     42 {
     43 public:
     44     BpQClient(const sp<IBinder>& impl)
     45         : BpInterface<IQClient>(impl) {}
     46 
     47     virtual status_t notifyCallback(uint32_t command,
     48             const Parcel* inParcel,
     49             Parcel* outParcel) {
     50         Parcel data;
     51         Parcel *reply = outParcel;
     52         data.writeInterfaceToken(IQClient::getInterfaceDescriptor());
     53         data.writeInt32(command);
     54         if (inParcel->dataAvail())
     55             data.appendFrom(inParcel, inParcel->dataPosition(),
     56                     inParcel->dataAvail());
     57         status_t result = remote()->transact(NOTIFY_CALLBACK, data, reply);
     58         return result;
     59     }
     60 };
     61 
     62 IMPLEMENT_META_INTERFACE(QClient, "android.display.IQClient");
     63 
     64 // ----------------------------------------------------------------------
     65 //Stub implementation - nothing needed here
     66 status_t BnQClient::onTransact(
     67     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
     68 {
     69     switch(code) {
     70         case NOTIFY_CALLBACK: {
     71             CHECK_INTERFACE(IQClient, data, reply);
     72             uint32_t command = data.readInt32();
     73             notifyCallback(command, &data, reply);
     74             return NO_ERROR;
     75         } break;
     76         default:
     77             return BBinder::onTransact(code, data, reply, flags);
     78     }
     79 
     80 }
     81 
     82 }; // namespace qClient
     83