Repo created

libs/routing/maxspeeds.hpp

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+#pragma once
+
+#include "routing_common/maxspeed_conversion.hpp"
+#include "routing_common/vehicle_model.hpp"
+
+#include "indexer/mwm_set.hpp"
+
+#include "coding/memory_region.hpp"
+#include "coding/reader.hpp"
+#include "coding/simple_dense_coding.hpp"
+
+#include <memory>
+#include <unordered_map>
+#include <vector>
+
+#include "3party/succinct/elias_fano.hpp"
+
+namespace routing
+{
+class MaxspeedsSerializer;
+
+class Maxspeeds
+{
+  friend class MaxspeedsSerializer;
+
+public:
+  /// \returns false if there's no maxspeeds (forward or bidirectional) and true otherwise.
+  bool IsEmpty() const;
+
+  /// \returns Maxspeed for feature id |fid|. If there's no Maxspeed value for |fid|
+  /// returns an invalid Maxspeed value.
+  Maxspeed GetMaxspeed(uint32_t fid) const;
+  MaxspeedType GetDefaultSpeed(bool inCity, HighwayType hwType) const;
+
+  using ReaderT = ModelReaderPtr;
+  void Load(ReaderT const & reader);
+
+private:
+  bool HasForwardMaxspeed(uint32_t fid) const;
+
+  // Feature IDs (compressed rank bit-vector).
+  std::unique_ptr<CopiedMemoryRegion> m_forwardMaxspeedTableRegion;
+  succinct::elias_fano m_forwardMaxspeedsTable;
+
+  // Forward speeds (compressed uint8_t vector).
+  std::unique_ptr<CopiedMemoryRegion> m_forwardMaxspeedRegion;
+  coding::SimpleDenseCoding m_forwardMaxspeeds;
+
+  std::vector<FeatureMaxspeed> m_bidirectionalMaxspeeds;
+
+  static int constexpr DEFAULT_SPEEDS_COUNT = 2;
+  // Default speeds (KmPerH) for MWM, 0 - outside a city, 1 - inside a city.
+  std::unordered_map<HighwayType, MaxspeedType> m_defaultSpeeds[DEFAULT_SPEEDS_COUNT];
+};
+
+std::unique_ptr<Maxspeeds> LoadMaxspeeds(MwmSet::MwmHandle const & handle);
+}  // namespace routing