ExtFeaturesRegistry.h

// Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
// SPDX-License-Identifier: BSD-3-Clause-Clear
 
#ifndef EXT_FEATURES_REGISTRY_H
#define EXT_FEATURES_REGISTRY_H
 
#include <vector>
#include <memory>
#include <unordered_map>
#include <dlfcn.h>
 
#include "SignalExtFeatureMapper.h"
#include "Utils.h"
#include "Signal.h"
#include "Logger.h"
 
#define INITIALIZE_FEATURE_ROUTINE "initFeature"
#define TEARDOWN_FEATURE_ROUTINE "tearFeature"
#define RELAY_FEATURE_ROUTINE "relayFeature"
 
typedef struct {
    uint32_t mFeatureId;
    std::string mFeatureLib;
    std::string mFeatureName;
    std::vector<uint32_t>* mSignalsSubscribedTo;
} ExtFeatureInfo;
 
typedef void (*ExtFeature)(void);
typedef void (*RelayFeature)(uint32_t, const std::string&, const std::string&, int32_t, std::vector<uint32_t>*);
 
class ExtFeaturesRegistry {
private:
    static std::shared_ptr<ExtFeaturesRegistry> extFeaturesRegistryInstance;
    int32_t mTotalExtFeatures;
    std::vector<ExtFeatureInfo*> mExtFeaturesConfigs;
 
    std::unordered_map<uint32_t, int32_t> mSystemIndependentLayerMappings;
 
    ExtFeaturesRegistry();
 
public:
    ~ExtFeaturesRegistry();
 
    ExtFeatureInfo* getExtFeatureConfigById(uint32_t extFeatureId);
 
    void initializeFeatures();
 
    void teardownFeatures();
 
    ErrCode relayToFeature(uint32_t featureId, Signal* signal);
 
    int32_t getExtFeaturesConfigCount();
    std::vector<ExtFeatureInfo*> getExtFeaturesConfigs();
 
    void registerExtFeature(ExtFeatureInfo* extFeatureInfo);
    void displayExtFeatures();
 
    static std::shared_ptr<ExtFeaturesRegistry> getInstance() {
        if(extFeaturesRegistryInstance == nullptr) {
            extFeaturesRegistryInstance = std::shared_ptr<ExtFeaturesRegistry> (new ExtFeaturesRegistry());
        }
        return extFeaturesRegistryInstance;
    }
};
 
class ExtFeatureInfoBuilder {
private:
    ExtFeatureInfo* mFeatureInfo;
 
public:
    ExtFeatureInfoBuilder();
 
    ErrCode setId(const std::string& featureIdString);
    ErrCode setName(const std::string& featureName);
    ErrCode setLib(const std::string& featureLib);
    ErrCode addSignalSubscribedTo(const std::string& sigCodeString);
 
    ExtFeatureInfo* build();
};
 
#endif