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 LowEnergyClientFactory;
31 // Represents the local Bluetooth adapter.
34 // The default values returned before the Adapter is fully initialized and
35 // powered. The complete values for these fields are obtained following a
36 // successful call to "Enable".
37 static const char kDefaultAddress[];
38 static const char kDefaultName[];
40 // Observer interface allows other classes to receive notifications from us.
41 // All of the methods in this interface are declared as optional to allow
42 // different layers to process only those events that they are interested in.
44 // All methods take in an |adapter| argument which points to the Adapter
45 // object that the Observer instance was added to.
48 virtual ~Observer() = default;
50 // Called when there is a change in the state of the local Bluetooth
51 // |adapter| from |prev_state| to |new_state|.
52 virtual void OnAdapterStateChanged(Adapter* adapter,
53 AdapterState prev_state,
54 AdapterState new_state);
56 // Called when there is a change in the connection state between the local
57 // |adapter| and a remote device with address |device_address|. If the ACL
58 // state changes from disconnected to connected, then |connected| will be
59 // true and vice versa.
60 virtual void OnDeviceConnectionStateChanged(
61 Adapter* adapter, const std::string& device_address, bool connected);
64 // Returns an Adapter implementation to be used in production. Don't use these
65 // in tests; use MockAdapter instead.
66 static std::unique_ptr<Adapter> Create();
68 virtual ~Adapter() = default;
70 // Add or remove an observer.
71 virtual void AddObserver(Observer* observer) = 0;
72 virtual void RemoveObserver(Observer* observer) = 0;
74 // Returns the current Adapter state.
75 virtual AdapterState GetState() const = 0;
77 // Returns true, if the adapter radio is current powered.
78 virtual bool IsEnabled() const = 0;
80 // Enables Bluetooth. This method will send a request to the Bluetooth adapter
81 // to power up its radio. Returns true, if the request was successfully sent
82 // to the controller, otherwise returns false. A successful call to this
83 // method only means that the enable request has been sent to the Bluetooth
84 // controller and does not imply that the operation itself succeeded.
85 // The |start_restricted| flag enables the adapter in restricted mode. In
86 // restricted mode, bonds that are created are marked as restricted in the
87 // config file. These devices are deleted upon leaving restricted mode.
88 virtual bool Enable(bool start_restricted) = 0;
90 // Powers off the Bluetooth radio. Returns true, if the disable request was
91 // successfully sent to the Bluetooth controller.
92 virtual bool Disable() = 0;
94 // Returns the name currently assigned to the local adapter.
95 virtual std::string GetName() const = 0;
97 // Sets the name assigned to the local Bluetooth adapter. This is the name
98 // that the local controller will present to remote devices.
99 virtual bool SetName(const std::string& name) = 0;
101 // Returns the local adapter addess in string form (XX:XX:XX:XX:XX:XX).
102 virtual std::string GetAddress() const = 0;
104 // Returns true if the local adapter supports the Low-Energy
105 // multi-advertisement feature.
106 virtual bool IsMultiAdvertisementSupported() = 0;
108 // Returns true if the remote device with address |device_address| is
109 // currently connected. This is not a const method as it modifies the state of
110 // the associated internal mutex.
111 virtual bool IsDeviceConnected(const std::string& device_address) = 0;
113 // Returns the total number of trackable advertisements as supported by the
114 // underlying hardware.
115 virtual int GetTotalNumberOfTrackableAdvertisements() = 0;
117 // Returns true if hardware-backed scan filtering is supported.
118 virtual bool IsOffloadedFilteringSupported() = 0;
120 // Returns true if hardware-backed batch scanning is supported.
121 virtual bool IsOffloadedScanBatchingSupported() = 0;
123 // Returns a pointer to the LowEnergyClientFactory. This can be used to
124 // register per-application LowEnergyClient instances to perform BLE GAP
126 virtual LowEnergyClientFactory* GetLowEnergyClientFactory() const = 0;
128 // Returns a pointer to the GattClientFactory. This can be used to register
129 // per-application GATT server instances.
130 virtual GattClientFactory* GetGattClientFactory() const = 0;
132 // Returns a pointer to the GattServerFactory. This can be used to register
133 // per-application GATT server instances.
134 virtual GattServerFactory* GetGattServerFactory() const = 0;
140 DISALLOW_COPY_AND_ASSIGN(Adapter);
143 } // namespace bluetooth