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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 HIDUTIL_HIDREPORT_H_
#define HIDUTIL_HIDREPORT_H_
#include "HidGlobal.h"
#include "HidLocal.h"
#include "TriState.h"
#include <cstdint>
#include <memory>
#include <iostream>
#include <utility>
namespace HidUtil {
class HidParser;
class HidTreeNode;
// HidReport represent an input, output or feature report
class HidReport {
friend std::ostream& operator<<(std::ostream& os, const HidReport& h);
public:
HidReport(uint32_t type_, uint32_t data, const HidGlobal &global, const HidLocal &local);
// This is called during parsing process when the parser regroups multi-valued report into one
void setCollapsed(uint32_t fullUsage);
// get report id
unsigned int getReportId() const;
// get type of report, return constant of HidDef::MainTag
unsigned int getType() const;
// Full sensor usage
unsigned int getFullUsage() const;
// binary properties
bool isArray() const;
bool isData() const;
bool isVariable() const;
// logical and physical value range
std::pair<int64_t, int64_t> getLogicalRange() const;
std::pair<int64_t, int64_t> getPhysicalRange() const;
double getExponentValue() const;
// return HID unit nibbles in an unsigned int
unsigned int getUnit() const;
// size in bits
size_t getSize() const;
// dimension (if it is vector/matrix) or number of concurrent input values
// it is also used to calculate memory foot print
size_t getCount() const;
// for output to stream
static std::string reportTypeToString(int type);
std::string getStringType() const;
std::string getExponentString() const;
std::string getUnitString() const;
std::string getFlagString() const;
const std::vector<unsigned int>& getUsageVector() const;
private:
bool mIsCollapsed;
// mandatary fields
unsigned int mReportType;
unsigned int mFlag;
unsigned int mUsagePage;
unsigned int mUsage;
std::vector<unsigned int> mUsageVector;
int mLogicalMin; // 32 bit is enough
int mLogicalMax;
unsigned int mReportSize;
unsigned int mReportCount;
// these below are optional
tri_int mPhysicalMin;
tri_int mPhysicalMax;
tri_uint mExponent;
tri_uint mUnit;
tri_uint mReportId;
};
std::ostream& operator<<(std::ostream& os, const HidReport& h);
} // namespace HidUtil
#endif // HIDUTIL_HIDREPORT_H_
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