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// Copyright 2015 The Chromium 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 DEVICE_BLUETOOTH_BLUETOOTH_DISCOVERY_FILTER_H_
#define DEVICE_BLUETOOTH_BLUETOOTH_DISCOVERY_FILTER_H_
#include <stdint.h>
#include <set>
#include "base/macros.h"
#include "base/memory/scoped_vector.h"
#include "device/bluetooth/bluetooth_export.h"
#include "device/bluetooth/bluetooth_uuid.h"
namespace device {
// Used to keep a discovery filter that can be used to limit reported devices.
class DEVICE_BLUETOOTH_EXPORT BluetoothDiscoveryFilter {
public:
// Possible transports to use for scan filter.
enum Transport {
TRANSPORT_CLASSIC = 0x01,
TRANSPORT_LE = 0x02,
TRANSPORT_DUAL = (TRANSPORT_CLASSIC | TRANSPORT_LE)
};
using TransportMask = uint8_t;
BluetoothDiscoveryFilter(TransportMask transport);
~BluetoothDiscoveryFilter();
// These getters return true when given field is set in filter, and copy this
// value to |out_*| parameter. If value is not set, returns false.
// Thes setters assign given value to proper filter field.
bool GetRSSI(int16_t* out_rssi) const;
void SetRSSI(int16_t rssi);
bool GetPathloss(uint16_t* out_pathloss) const;
void SetPathloss(uint16_t pathloss);
// Return and set transport field of this filter.
TransportMask GetTransport() const;
void SetTransport(TransportMask transport);
// Make |out_uuids| represent all uuids assigned to this filter.
void GetUUIDs(std::set<device::BluetoothUUID>& out_uuids) const;
// Add UUID to internal UUIDs filter. If UUIDs filter doesn't exist, it will
// be created.
void AddUUID(const device::BluetoothUUID& uuid);
// Copy content of |filter| and assigns it to this filter.
void CopyFrom(const BluetoothDiscoveryFilter& filter);
// Check if two filters are equal.
bool Equals(const BluetoothDiscoveryFilter& filter) const;
// Returns true if all fields in filter are empty
bool IsDefault() const;
// Returns result of merging two filters together. If at least one of the
// filters is NULL this will return an empty filter
static scoped_ptr<device::BluetoothDiscoveryFilter> Merge(
const device::BluetoothDiscoveryFilter* filter_a,
const device::BluetoothDiscoveryFilter* filter_b);
private:
scoped_ptr<int16_t> rssi_;
scoped_ptr<uint16_t> pathloss_;
TransportMask transport_;
ScopedVector<device::BluetoothUUID> uuids_;
DISALLOW_COPY_AND_ASSIGN(BluetoothDiscoveryFilter);
};
} // namespace device
#endif // DEVICE_BLUETOOTH_BLUETOOTH_DISCOVERY_FILTER_H_
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