| // Copyright 2017 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_CONNECTIVITY_BLUETOOTH_CORE_BT_HOST_FIDL_LOW_ENERGY_CENTRAL_SERVER_H_ |
| #define SRC_CONNECTIVITY_BLUETOOTH_CORE_BT_HOST_FIDL_LOW_ENERGY_CENTRAL_SERVER_H_ |
| |
| #include <fuchsia/bluetooth/le/cpp/fidl.h> |
| |
| #include <memory> |
| #include <unordered_map> |
| |
| #include <fbl/macros.h> |
| |
| #include "lib/fidl/cpp/binding.h" |
| #include "src/connectivity/bluetooth/core/bt-host/fidl/server_base.h" |
| #include "src/connectivity/bluetooth/core/bt-host/gap/low_energy_connection_manager.h" |
| #include "src/connectivity/bluetooth/core/bt-host/gap/low_energy_discovery_manager.h" |
| #include "src/connectivity/bluetooth/core/bt-host/gatt_host.h" |
| |
| namespace bthost { |
| |
| // Implements the low_energy::Central FIDL interface. |
| class LowEnergyCentralServer : public AdapterServerBase<fuchsia::bluetooth::le::Central> { |
| public: |
| LowEnergyCentralServer(fxl::WeakPtr<bt::gap::Adapter> adapter, |
| ::fidl::InterfaceRequest<fuchsia::bluetooth::le::Central> request, |
| fbl::RefPtr<GattHost> gatt_host); |
| ~LowEnergyCentralServer() override; |
| |
| // If we have connected to the |identifier|-associated peer, this function returns the pointer |
| // to the underlying connection, or nullptr otherwise. Should only be used for testing. |
| bt::gap::LowEnergyConnectionRef* FindConnectionForTesting(bt::PeerId identifier); |
| |
| private: |
| // fuchsia::bluetooth::le::Central overrides: |
| void GetPeripherals(::fidl::VectorPtr<::std::string> service_uuids, |
| GetPeripheralsCallback callback) override; |
| void GetPeripheral(::std::string identifier, GetPeripheralCallback callback) override; |
| void StartScan(fuchsia::bluetooth::le::ScanFilterPtr filter, StartScanCallback callback) override; |
| void StopScan() override; |
| void ConnectPeripheral(::std::string identifier, |
| fuchsia::bluetooth::le::ConnectionOptions connection_options, |
| ::fidl::InterfaceRequest<fuchsia::bluetooth::gatt::Client> client_request, |
| ConnectPeripheralCallback callback) override; |
| void DisconnectPeripheral(::std::string identifier, |
| DisconnectPeripheralCallback callback) override; |
| |
| // Called by |scan_session_| when a device is discovered. |
| void OnScanResult(const bt::gap::Peer& peer); |
| |
| // Notifies the delegate that the scan state for this Central has changed. |
| void NotifyScanStateChanged(bool scanning); |
| |
| // Notifies the delegate that the device with the given identifier has been |
| // disconnected. |
| void NotifyPeripheralDisconnected(bt::PeerId peer_id); |
| |
| // The GATT host is used to instantiate GATT Clients upon connection. |
| fbl::RefPtr<GattHost> gatt_host_; |
| |
| // The currently active LE discovery session. This is initialized when a |
| // client requests to perform a scan. |
| bool requesting_scan_; |
| std::unique_ptr<bt::gap::LowEnergyDiscoverySession> scan_session_; |
| |
| // This client's connection references. A client can hold a connection to |
| // multiple peers. Each key is a peer identifier. Each value is |
| // a. nullptr, if a connect request to this device is currently pending. |
| // b. a valid reference if this Central is holding a connection reference to |
| // this device. |
| std::unordered_map<bt::PeerId, bt::gap::LowEnergyConnectionRefPtr> connections_; |
| |
| // Keep this as the last member to make sure that all weak pointers are |
| // invalidated before other members get destroyed. |
| fxl::WeakPtrFactory<LowEnergyCentralServer> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN_ALLOW_MOVE(LowEnergyCentralServer); |
| }; |
| |
| } // namespace bthost |
| |
| #endif // SRC_CONNECTIVITY_BLUETOOTH_CORE_BT_HOST_FIDL_LOW_ENERGY_CENTRAL_SERVER_H_ |