#pragma once
#include "IFrame.hpp"
#include <memory>
namespace libobsensor {
template <typename T, typename Field> class StructureMetadataParser : public IFrameMetadataParser {
public:
StructureMetadataParser(Field T::*field, FrameMetadataModifier mod) : field_(field), modifier_(mod) {};
virtual ~StructureMetadataParser() override = default;
int64_t getValue(const uint8_t *metadata, size_t dataSize) override {
if(!isSupported(metadata, dataSize)) {
throw unsupported_operation_exception("Current metadata does not contain this structure!");
}
auto value = static_cast<int64_t>((*reinterpret_cast<const T *>(metadata)).*field_);
if(modifier_) {
value = modifier_(value);
}
return value;
}
bool isSupported(const uint8_t *metadata, size_t dataSize) override {
(void)metadata;
return dataSize >= sizeof(T);
}
private:
Field T::*field_;
FrameMetadataModifier modifier_;
};
template <typename T, typename Field>
std::shared_ptr<StructureMetadataParser<T, Field>> makeStructureMetadataParser(Field T::*field, FrameMetadataModifier mod = nullptr) {
return std::make_shared<StructureMetadataParser<T, Field>>(field, mod);
}
}