2 // Copyright (C) 2015 Google, Inc.
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at:
8 // http://www.apache.org/licenses/LICENSE-2.0
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
21 #include <base/macros.h>
23 #include "service/common/bluetooth/adapter_state.h"
27 class GattClientFactory;
28 class GattServerFactory;
29 class LowEnergyAdvertiserFactory;
30 class LowEnergyScannerFactory;
31 class LowEnergyClientFactory;
33 // Represents the local Bluetooth adapter.
36 // The default values returned before the Adapter is fully initialized and
37 // powered. The complete values for these fields are obtained following a
38 // successful call to "Enable".
39 static const char kDefaultAddress[];
40 static const char kDefaultName[];
42 // Observer interface allows other classes to receive notifications from us.
43 // All of the methods in this interface are declared as optional to allow
44 // different layers to process only those events that they are interested in.
46 // All methods take in an |adapter| argument which points to the Adapter
47 // object that the Observer instance was added to.
50 virtual ~Observer() = default;
52 // Called when there is a change in the state of the local Bluetooth
53 // |adapter| from |prev_state| to |new_state|.
54 virtual void OnAdapterStateChanged(Adapter* adapter,
55 AdapterState prev_state,
56 AdapterState new_state);
58 // Called when there is a change in the connection state between the local
59 // |adapter| and a remote device with address |device_address|. If the ACL
60 // state changes from disconnected to connected, then |connected| will be
61 // true and vice versa.
62 virtual void OnDeviceConnectionStateChanged(
63 Adapter* adapter, const std::string& device_address, bool connected);
66 // Returns an Adapter implementation to be used in production. Don't use these
67 // in tests; use MockAdapter instead.
68 static std::unique_ptr<Adapter> Create();
70 virtual ~Adapter() = default;
72 // Add or remove an observer.
73 virtual void AddObserver(Observer* observer) = 0;
74 virtual void RemoveObserver(Observer* observer) = 0;
76 // Returns the current Adapter state.
77 virtual AdapterState GetState() const = 0;
79 // Returns true, if the adapter radio is current powered.
80 virtual bool IsEnabled() const = 0;
82 // Enables Bluetooth. This method will send a request to the Bluetooth adapter
83 // to power up its radio. Returns true, if the request was successfully sent
84 // to the controller, otherwise returns false. A successful call to this
85 // method only means that the enable request has been sent to the Bluetooth
86 // controller and does not imply that the operation itself succeeded.
87 // The |start_restricted| flag enables the adapter in restricted mode. In
88 // restricted mode, bonds that are created are marked as restricted in the
89 // config file. These devices are deleted upon leaving restricted mode.
90 virtual bool Enable(bool start_restricted) = 0;
92 // Powers off the Bluetooth radio. Returns true, if the disable request was
93 // successfully sent to the Bluetooth controller.
94 virtual bool Disable() = 0;
96 // Returns the name currently assigned to the local adapter.
97 virtual std::string GetName() const = 0;
99 // Sets the name assigned to the local Bluetooth adapter. This is the name
100 // that the local controller will present to remote devices.
101 virtual bool SetName(const std::string& name) = 0;
103 // Returns the local adapter addess in string form (XX:XX:XX:XX:XX:XX).
104 virtual std::string GetAddress() const = 0;
106 // Returns true if the local adapter supports the Low-Energy
107 // multi-advertisement feature.
108 virtual bool IsMultiAdvertisementSupported() = 0;
110 // Returns true if the remote device with address |device_address| is
111 // currently connected. This is not a const method as it modifies the state of
112 // the associated internal mutex.
113 virtual bool IsDeviceConnected(const std::string& device_address) = 0;
115 // Returns the total number of trackable advertisements as supported by the
116 // underlying hardware.
117 virtual int GetTotalNumberOfTrackableAdvertisements() = 0;
119 // Returns true if hardware-backed scan filtering is supported.
120 virtual bool IsOffloadedFilteringSupported() = 0;
122 // Returns true if hardware-backed batch scanning is supported.
123 virtual bool IsOffloadedScanBatchingSupported() = 0;
125 // Returns a pointer to the LowEnergyClientFactory. This can be used to
126 // register per-application LowEnergyClient instances to perform BLE GAP
128 virtual LowEnergyClientFactory* GetLowEnergyClientFactory() const = 0;
130 // Returns a pointer to the LowEnergyScannerFactory. This can be used to
131 // register per-application LowEnergyScanner instances to perform scanning.
132 virtual LowEnergyScannerFactory* GetLeScannerFactory() const = 0;
134 // Returns a pointer to the LowEnergyAdvertiserFactory. This can be used to
135 // register per-application LowEnergyAdvertiser instances to perform
137 virtual LowEnergyAdvertiserFactory* GetLeAdvertiserFactory() const = 0;
139 // Returns a pointer to the GattClientFactory. This can be used to register
140 // per-application GATT server instances.
141 virtual GattClientFactory* GetGattClientFactory() const = 0;
143 // Returns a pointer to the GattServerFactory. This can be used to register
144 // per-application GATT server instances.
145 virtual GattServerFactory* GetGattServerFactory() const = 0;
151 DISALLOW_COPY_AND_ASSIGN(Adapter);
154 } // namespace bluetooth