70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROIDCONTEXTHUB_H_
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#define ANDROIDCONTEXTHUB_H_
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#include "contexthub.h"
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#include <poll.h>
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#include <unistd.h>
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namespace android {
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/*
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* Communicates with a context hub via the /dev/nanohub interface
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*/
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class AndroidContextHub : public ContextHub {
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public:
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~AndroidContextHub();
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// Performs system resource cleanup in the event that the program is
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// terminated abnormally (via std::terminate)
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static void TerminateHandler();
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bool Initialize() override;
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bool LoadCalibration() override;
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void SetLoggingEnabled(bool logging_enabled) override;
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protected:
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ContextHub::TransportResult WriteEvent(
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const std::vector<uint8_t>& request) override;
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ContextHub::TransportResult ReadEvent(std::vector<uint8_t>& response,
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int timeout_ms) override;
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bool FlashSensorHub(const std::vector<uint8_t>& bytes) override;
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bool SetCalibration(SensorType sensor_type, int32_t data) override;
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bool SetCalibration(SensorType sensor_type, float data) override;
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bool SetCalibration(SensorType sensor_type, int32_t x, int32_t y, int32_t z)
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override;
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bool SetCalibration(SensorType sensor_type, int32_t x, int32_t y,
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int32_t z, int32_t w) override;
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bool SaveCalibration() override;
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private:
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int sensor_fd_ = -1;
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int comms_fd_ = -1;
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ContextHub::TransportResult ReadEventFromFd(int fd,
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std::vector<uint8_t>& message);
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int ResetPollFds(struct pollfd *pfds, size_t count);
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static const char *SensorTypeToCalibrationKey(SensorType sensor_type);
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};
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} // namespace android
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#endif // ANDROIDCONTEXTHUB_H_
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