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      1 /*
      2  * Copyright (C) 2016 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 #ifndef android_hardware_gnss_V1_0_GnssNi_H_
     18 #define android_hardware_gnss_V1_0_GnssNi_H_
     19 
     20 #include <ThreadCreationWrapper.h>
     21 #include <android/hardware/gnss/1.0/IGnssNi.h>
     22 #include <hidl/Status.h>
     23 #include <hardware/gps.h>
     24 
     25 namespace android {
     26 namespace hardware {
     27 namespace gnss {
     28 namespace V1_0 {
     29 namespace implementation {
     30 
     31 using ::android::hardware::gnss::V1_0::IGnssNi;
     32 using ::android::hardware::gnss::V1_0::IGnssNiCallback;
     33 using ::android::hardware::Return;
     34 using ::android::hardware::Void;
     35 using ::android::hardware::hidl_vec;
     36 using ::android::hardware::hidl_string;
     37 using ::android::sp;
     38 
     39 /*
     40  * Extended interface for Network-initiated (NI) support. This interface is used to respond to
     41  * NI notifications originating from the HAL. Also contains wrapper methods to allow methods from
     42  * IGnssNiCallback interface to be passed into the conventional implementation of the GNSS HAL.
     43  */
     44 struct GnssNi : public IGnssNi {
     45     GnssNi(const GpsNiInterface* gpsNiIface);
     46     ~GnssNi();
     47 
     48     /*
     49      * Methods from ::android::hardware::gnss::V1_0::IGnssNi follow.
     50      * These declarations were generated from IGnssNi.hal.
     51      */
     52     Return<void> setCallback(const sp<IGnssNiCallback>& callback) override;
     53     Return<void> respond(int32_t notifId,
     54                          IGnssNiCallback::GnssUserResponseType userResponse) override;
     55 
     56     /*
     57      * Callback methods to be passed into the conventional GNSS HAL by the default
     58      * implementation. These methods are not part of the IGnssNi base class.
     59      */
     60     static pthread_t createThreadCb(const char* name, void (*start)(void*), void* arg);
     61     static void niNotifyCb(GpsNiNotification* notification);
     62 
     63     /*
     64      * Holds function pointers to the callback methods.
     65      */
     66     static GpsNiCallbacks sGnssNiCb;
     67 
     68  private:
     69     const GpsNiInterface* mGnssNiIface = nullptr;
     70     static sp<IGnssNiCallback> sGnssNiCbIface;
     71     static std::vector<std::unique_ptr<ThreadFuncArgs>> sThreadFuncArgsList;
     72     static bool sInterfaceExists;
     73 };
     74 
     75 }  // namespace implementation
     76 }  // namespace V1_0
     77 }  // namespace gnss
     78 }  // namespace hardware
     79 }  // namespace android
     80 
     81 #endif  // android_hardware_gnss_V1_0_GnssNi_H_
     82