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/*
* Copyright (C) 2017 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.
*/
#ifndef NOS_NUGGET_CLIENT_INTERFACE_H
#define NOS_NUGGET_CLIENT_INTERFACE_H
#include <cstdint>
#include <vector>
namespace nos {
/**
* Interface for communication with a Nugget device.
*/
class NuggetClientInterface {
public:
virtual ~NuggetClientInterface() = default;
/**
* Opens a connection to the default Nugget device.
*
* If this fails, isOpen() will return false.
*/
virtual void Open() = 0;
/**
* Closes the connection to Nugget.
*/
virtual void Close() = 0;
/**
* Checked whether a connection is open to Nugget.
*/
virtual bool IsOpen() const = 0;
/**
* Call into and app running on Nugget.
*
* @param app_id The ID of the app to call.
* @param arg Argument to pass to the app.
* @param request Data to send to the app.
* @param response Buffer to receive data from the app.
* @return Status code from the app.
*/
virtual uint32_t CallApp(uint32_t appId, uint16_t arg,
const std::vector<uint8_t>& request,
std::vector<uint8_t>* response) = 0;
};
} // namespace nos
#endif // NOS_NUGGET_CLIENT_INTERFACE_H
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