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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 ANDROID_SENSORHAL_EXT_HIDRAW_DEVICE_H
#define ANDROID_SENSORHAL_EXT_HIDRAW_DEVICE_H
#include "HidDevice.h"
#include <HidParser.h>
#include <string>
#include <vector>
#include <unordered_set>
#include <unordered_map>
namespace android {
namespace SensorHalExt {
using HidUtil::HidParser;
using HidUtil::HidReport;
class HidRawDevice : public HidDevice {
friend class HidRawDeviceTest;
public:
HidRawDevice(const std::string &devName, const std::unordered_set<unsigned int> &usageSet);
virtual ~HidRawDevice();
// test if the device initialized successfully
bool isValid();
// implement HidDevice pure virtuals
virtual HidDeviceInfo& getDeviceInfo() override { return mDeviceInfo; }
virtual bool getFeature(uint8_t id, std::vector<uint8_t> *out) override;
virtual bool setFeature(uint8_t id, const std::vector<uint8_t> &in) override;
virtual bool sendReport(uint8_t id, std::vector<uint8_t> &data) override;
virtual bool receiveReport(uint8_t *id, std::vector<uint8_t> *data) override;
protected:
bool populateDeviceInfo();
size_t getReportSize(int type, uint8_t id);
bool generateDigest(const std::unordered_set<uint32_t> &usage);
size_t calculateReportBitSize(const std::vector<HidReport> &reportItems);
const HidParser::ReportPacket *getReportPacket(unsigned int type, unsigned int id);
typedef std::pair<unsigned int, unsigned int> ReportTypeIdPair;
struct UnsignedIntPairHash {
size_t operator()(const ReportTypeIdPair& v) const {
std::hash<unsigned int> hash;
return hash(v.first) ^ hash(v.second);
}
};
std::unordered_map<ReportTypeIdPair, const HidParser::ReportPacket *, UnsignedIntPairHash>
mReportTypeIdMap;
HidParser::DigestVector mDigestVector;
private:
std::mutex mIoBufferLock;
std::vector<uint8_t> mIoBuffer;
int mDevFd;
HidDeviceInfo mDeviceInfo;
bool mMultiIdDevice;
int mValid;
HidRawDevice(const HidRawDevice &) = delete;
void operator=(const HidRawDevice &) = delete;
};
} // namespace SensorHalExt
} // namespace android
#endif // ANDROID_SENSORHAL_EXT_HIDRAW_DEVICE_H
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