device/bluetooth/bluetooth_low_energy_discovery_manager_mac.mm

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "device/bluetooth/bluetooth_low_energy_discovery_manager_mac.h"
   6
   7 #include "base/mac/mac_util.h"
   8 #include "base/mac/sdk_forward_declarations.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/strings/sys_string_conversions.h"
  11 #include "device/bluetooth/bluetooth_adapter_mac.h"
  12 #include "device/bluetooth/bluetooth_low_energy_device_mac.h"
  13
  14 namespace device {
  15
  16 BluetoothLowEnergyDiscoveryManagerMac::
  17     ~BluetoothLowEnergyDiscoveryManagerMac() {
  18 }
  19
  20 bool BluetoothLowEnergyDiscoveryManagerMac::IsDiscovering() const {
  21   return discovering_;
  22 }
  23
  24 void BluetoothLowEnergyDiscoveryManagerMac::StartDiscovery(
  25     BluetoothDevice::UUIDList services_uuids) {
  26   discovering_ = true;
  27   pending_ = true;
  28   services_uuids_ = services_uuids;
  29   TryStartDiscovery();
  30 }
  31
  32 void BluetoothLowEnergyDiscoveryManagerMac::TryStartDiscovery() {
  33   if (!discovering_) {
  34     return;
  35   }
  36
  37   if (!pending_) {
  38     return;
  39   }
  40
  41   // Can only start if the bluetooth power is turned on.
  42   if (!central_manager_ ||
  43       [central_manager_ state] != CBCentralManagerStatePoweredOn) {
  44     return;
  45   }
  46
  47   // Converts the services UUIDs to a CoreBluetooth data structure.
  48   NSMutableArray* services = nil;
  49   if (!services_uuids_.empty()) {
  50     services = [NSMutableArray array];
  51     for (auto& service_uuid : services_uuids_) {
  52       NSString* uuidString =
  53           base::SysUTF8ToNSString(service_uuid.canonical_value().c_str());
  54       Class aClass = NSClassFromString(@"CBUUID");
  55       CBUUID* uuid = [aClass UUIDWithString:uuidString];
  56       [services addObject:uuid];
  57     }
  58   };
  59
  60   [central_manager_ scanForPeripheralsWithServices:services options:nil];
  61   pending_ = false;
  62 }
  63
  64 void BluetoothLowEnergyDiscoveryManagerMac::StopDiscovery() {
  65   if (discovering_ && !pending_) {
  66     [central_manager_ stopScan];
  67   }
  68   discovering_ = false;
  69 }
  70
  71 void BluetoothLowEnergyDiscoveryManagerMac::SetCentralManager(
  72     CBCentralManager* central_manager) {
  73   central_manager_ = central_manager;
  74 }
  75
  76 void BluetoothLowEnergyDiscoveryManagerMac::DiscoveredPeripheral(
  77     CBPeripheral* peripheral,
  78     NSDictionary* advertisementData,
  79     int rssi) {
  80   observer_->LowEnergyDeviceUpdated(peripheral, advertisementData, rssi);
  81 }
  82
  83 BluetoothLowEnergyDiscoveryManagerMac*
  84 BluetoothLowEnergyDiscoveryManagerMac::Create(Observer* observer) {
  85   return new BluetoothLowEnergyDiscoveryManagerMac(observer);
  86 }
  87
  88 BluetoothLowEnergyDiscoveryManagerMac::BluetoothLowEnergyDiscoveryManagerMac(
  89     Observer* observer)
  90     : observer_(observer) {
  91   DCHECK(BluetoothAdapterMac::IsLowEnergyAvailable());
  92   discovering_ = false;
  93 }
  94
  95 }  // namespace device