neuralnetworks/aidl/utils/src/Service.cpp

/*
 * Copyright (C) 2021 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "Service.h"

#include <android/binder_auto_utils.h>
#include <android/binder_manager.h>

#include <nnapi/IDevice.h>
#include <nnapi/Result.h>
#include <nnapi/Types.h>
#include <nnapi/hal/ResilientDevice.h>
#include <string>

#include "Device.h"

namespace aidl::android::hardware::neuralnetworks::utils {

nn::GeneralResult<nn::SharedDevice> getDevice(const std::string& name) {
    hal::utils::ResilientDevice::Factory makeDevice =
            [name](bool blocking) -> nn::GeneralResult<nn::SharedDevice> {
        auto service = blocking ? IDevice::fromBinder(
                                          ndk::SpAIBinder(AServiceManager_getService(name.c_str())))
                                : IDevice::fromBinder(ndk::SpAIBinder(
                                          AServiceManager_checkService(name.c_str())));
        if (service == nullptr) {
            return NN_ERROR() << (blocking ? "AServiceManager_getService"
                                           : "AServiceManager_checkService")
                              << " returned nullptr";
        }
        return Device::create(name, std::move(service));
    };

    return hal::utils::ResilientDevice::create(std::move(makeDevice));
}

}  // namespace aidl::android::hardware::neuralnetworks::utils