src/Tizen.Network.Bluetooth/Tizen.Network.Bluetooth/BluetoothLeAdapterImpl.cs

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   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
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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.
  15  */
  16
  17 using System;
  18 using System.Collections.Generic;
  19 using System.Collections.Specialized;
  20 using System.Threading.Tasks;
  21 using System.Runtime.InteropServices;
  22
  23 namespace Tizen.Network.Bluetooth
  24 {
  25     internal class BluetoothLeImplAdapter : IDisposable
  26     {
  27         private static readonly BluetoothLeImplAdapter _instance = new BluetoothLeImplAdapter();
  28
  29         private bool disposed = false;
  30
  31         private event EventHandler<AdapterLeScanResultChangedEventArgs> _adapterLeScanResultChanged = null;
  32         private Interop.Bluetooth.AdapterLeScanResultChangedCallBack _adapterLeScanResultChangedCallback;
  33
  34         private event EventHandler<AdvertisingStateChangedEventArgs> _advertisingStateChanged = null;
  35         private Interop.Bluetooth.AdvertisingStateChangedCallBack _advertisingStateChangedCallback;
  36
  37         private event EventHandler<GattConnectionStateChangedEventArgs> _gattConnectionStateChanged = null;
  38         private Interop.Bluetooth.GattConnectionStateChangedCallBack _gattConnectionStateChangedCallback;
  39
  40         private int _serviceListCount = 0;
  41         private IList<BluetoothLeServiceData> _list = new List<BluetoothLeServiceData>();
  42         private bool _scanStarted;
  43
  44         internal static BluetoothLeImplAdapter Instance
  45         {
  46             get
  47             {
  48                 return _instance;
  49             }
  50         }
  51
  52         private BluetoothLeImplAdapter()
  53         {
  54         }
  55
  56         ~BluetoothLeImplAdapter()
  57         {
  58             Dispose(false);
  59         }
  60
  61         public void Dispose()
  62         {
  63             Dispose(true);
  64             GC.SuppressFinalize(this);
  65         }
  66
  67         private void Dispose(bool disposing)
  68         {
  69             if (disposed)
  70                 return;
  71
  72             if (disposing)
  73             {
  74                 // Free managed objects.
  75             }
  76             //Free unmanaged objects
  77             if (_gattConnectionStateChanged != null)
  78             {
  79                 UnRegisterGattConnectionStateChangedEvent();
  80             }
  81
  82             //stop scan operation in progress
  83             StopScan ();
  84
  85             disposed = true;
  86         }
  87
  88         internal event EventHandler<AdapterLeScanResultChangedEventArgs> AdapterLeScanResultChanged
  89         {
  90             add
  91             {
  92                 _adapterLeScanResultChanged += value;
  93             }
  94             remove {
  95                 _adapterLeScanResultChanged -= value;
  96             }
  97         }
  98
  99         internal event EventHandler<AdvertisingStateChangedEventArgs> AdapterLeAdvertisingStateChanged
 100         {
 101             add
 102             {
 103                 _advertisingStateChanged += value;
 104             }
 105             remove
 106             {
 107                 _advertisingStateChanged -= value;
 108             }
 109         }
 110
 111         internal event EventHandler<GattConnectionStateChangedEventArgs> LeGattConnectionStateChanged
 112         {
 113             add
 114             {
 115                 if (_gattConnectionStateChanged == null)
 116                 {
 117                     RegisterGattConnectionStateChangedEvent();
 118                 }
 119                 _gattConnectionStateChanged += value;
 120             }
 121             remove
 122             {
 123                 _gattConnectionStateChanged -= value;
 124                 if (_gattConnectionStateChanged == null)
 125                 {
 126                     UnRegisterGattConnectionStateChangedEvent();
 127                 }
 128             }
 129         }
 130
 131         internal void RegisterGattConnectionStateChangedEvent()
 132         {
 133             _gattConnectionStateChangedCallback = (int result, bool connected,
 134                                     string remoteDeviceAddress, IntPtr userData) =>
 135             {
 136                 if (_gattConnectionStateChanged != null)
 137                 {
 138                     Log.Info(Globals.LogTag, "Setting gatt connection state changed callback" );
 139                     GattConnectionStateChangedEventArgs e = new GattConnectionStateChangedEventArgs (result,
 140                         connected, remoteDeviceAddress);
 141
 142                     _gattConnectionStateChanged(null, e);
 143                 }
 144             };
 145
 146             int ret = Interop.Bluetooth.SetGattConnectionStateChangedCallback(
 147                                     _gattConnectionStateChangedCallback, IntPtr.Zero);
 148             if (ret != (int)BluetoothError.None)
 149             {
 150                 Log.Error(Globals.LogTag, "Failed to set gatt connection state changed callback, Error - " + (BluetoothError)ret);
 151             }
 152         }
 153
 154         internal void UnRegisterGattConnectionStateChangedEvent()
 155         {
 156             int ret = Interop.Bluetooth.UnsetGattConnectionStateChangedCallback();
 157             if (ret != (int)BluetoothError.None)
 158             {
 159                 Log.Error(Globals.LogTag, "Failed to unset gatt connection state changed callback, Error - " + (BluetoothError)ret);
 160             }
 161         }
 162
 163         internal int StartScan()
 164         {
 165             _adapterLeScanResultChangedCallback = (int result, ref BluetoothLeScanDataStruct scanData, IntPtr userData) =>
 166             {
 167                 Log.Info(Globals.LogTag, "Inside Le scan callback " );
 168                 BluetoothLeScanData scanDataInfo = BluetoothUtils.ConvertStructToLeScanData(scanData);
 169
 170                 BluetoothLeDevice device = new BluetoothLeDevice(scanDataInfo);
 171                 BluetoothError res = (BluetoothError)result;
 172
 173                 AdapterLeScanResultChangedEventArgs e = new AdapterLeScanResultChangedEventArgs (res,
 174                                                                     device);
 175                 _adapterLeScanResultChanged (null, e);
 176             };
 177
 178             IntPtr data = IntPtr.Zero;
 179             int ret = Interop.Bluetooth.StartScan(_adapterLeScanResultChangedCallback, data);
 180             if (ret != (int)BluetoothError.None)
 181             {
 182                 Log.Error(Globals.LogTag, "Failed to start BLE scan - " + (BluetoothError)ret);
 183                 BluetoothErrorFactory.ThrowBluetoothException(ret);
 184             }
 185             _scanStarted = true;
 186             return ret;
 187         }
 188
 189         internal int StopScan()
 190         {
 191             int ret = (int)BluetoothError.None;
 192
 193             if (_scanStarted)
 194             {
 195                 ret = Interop.Bluetooth.StopScan ();
 196                 if (ret != (int)BluetoothError.None) {
 197                     Log.Error (Globals.LogTag, "Failed to stop BLE scan - " + (BluetoothError)ret);
 198                     BluetoothErrorFactory.ThrowBluetoothException (ret);
 199                 }
 200             }
 201             return ret;
 202         }
 203
 204         internal IList<string> GetLeScanResultServiceUuids(BluetoothLeScanData scanData, BluetoothLePacketType packetType)
 205         {
 206             IntPtr uuidListArray = IntPtr.Zero;
 207             int count = -1;
 208
 209             BluetoothLeScanDataStruct scanDataStruct = BluetoothUtils.ConvertLeScanDataToStruct(scanData);
 210
 211             int ret = Interop.Bluetooth.GetScanResultServiceUuid(ref scanDataStruct, packetType,
 212                                                 ref uuidListArray, ref count);
 213             if (ret != (int)BluetoothError.None)
 214             {
 215                 Log.Info(Globals.LogTag, "Failed to service uuids list- " + (BluetoothError)ret);
 216                 return null;
 217             }
 218
 219             Log.Info(Globals.LogTag, "count of uuids :  " + count);
 220
 221             IntPtr[] uuidList = new IntPtr[count];
 222             Marshal.Copy(uuidListArray, uuidList, 0, count);
 223             IList<string> list = new List<string>();
 224             foreach(IntPtr uuids in uuidList)
 225             {
 226                 list.Add(Marshal.PtrToStringAnsi(uuids));
 227                 Interop.Libc.Free(uuids);
 228             }
 229
 230             Interop.Libc.Free(uuidListArray);
 231             return list;
 232         }
 233
 234         internal string GetLeScanResultDeviceName(BluetoothLeScanData scanData, BluetoothLePacketType packetType)
 235         {
 236             string deviceName;
 237
 238             BluetoothLeScanDataStruct scanDataStruct = BluetoothUtils.ConvertLeScanDataToStruct (scanData);
 239
 240             int ret = Interop.Bluetooth.GetLeScanResultDeviceName(ref scanDataStruct, packetType, out deviceName);
 241             if (ret != (int)BluetoothError.None) {
 242                 Log.Error(Globals.LogTag, "Failed to get Device name- " + (BluetoothError)ret);
 243                 return null;
 244             }
 245             Log.Info (Globals.LogTag, "Device name " + deviceName);
 246             return deviceName;
 247         }
 248
 249         internal int GetScanResultTxPowerLevel(BluetoothLeScanData scanData, BluetoothLePacketType packetType)
 250         {
 251             int powerLevel = -1;
 252             BluetoothLeScanDataStruct scanDataStruct = BluetoothUtils.ConvertLeScanDataToStruct (scanData);
 253
 254             int ret = Interop.Bluetooth.GetScanResultTxPowerLevel(ref scanDataStruct, packetType, out powerLevel);
 255             if (ret != (int)BluetoothError.None) {
 256                 Log.Error(Globals.LogTag, "Failed to get tx power level- " + (BluetoothError)ret);
 257             }
 258             Log.Info (Globals.LogTag, "TxPowerLevel is --- " + powerLevel);
 259             return powerLevel;
 260         }
 261
 262         internal IList<string> GetScanResultSvcSolicitationUuids(BluetoothLeScanData scanData, BluetoothLePacketType packetType)
 263         {
 264             IntPtr uuidListArray;
 265             int count;
 266
 267             BluetoothLeScanDataStruct scanDataStruct = BluetoothUtils.ConvertLeScanDataToStruct(scanData);
 268
 269             int ret = Interop.Bluetooth.GetScaResultSvcSolicitationUuids(ref scanDataStruct, packetType, out uuidListArray, out count);
 270             if (ret != (int)BluetoothError.None) {
 271                 Log.Error(Globals.LogTag, "Failed to get service solicitation uuids " + (BluetoothError)ret);
 272                 return null;
 273             }
 274
 275             IntPtr[] uuidList = new IntPtr[count];
 276             Marshal.Copy(uuidListArray, uuidList, 0, count);
 277             IList<string> list = new List<string>();
 278             foreach(IntPtr uuids in uuidList)
 279             {
 280                 list.Add(Marshal.PtrToStringAnsi(uuids));
 281                 Interop.Libc.Free(uuids);
 282             }
 283
 284             Interop.Libc.Free(uuidListArray);
 285             return list;
 286         }
 287
 288         internal IList<BluetoothLeServiceData> GetScanResultServiceDataList(BluetoothLeScanData scanData,
 289                             BluetoothLePacketType packetType, out int serviceCount)
 290         {
 291             int ret = 0;
 292             IntPtr serviceListArray;
 293             _serviceListCount = 0;
 294
 295             BluetoothLeScanDataStruct scanDataStruct = BluetoothUtils.ConvertLeScanDataToStruct (scanData);
 296
 297             ret = Interop.Bluetooth.GetScanResultServiceDataList(ref scanDataStruct, packetType, out serviceListArray, out _serviceListCount);
 298             Log.Info(Globals.LogTag, "ServiceListCount :  " + _serviceListCount + " PacketType : " + packetType + " Error: " + (BluetoothError)ret);
 299             if (ret != (int)BluetoothError.None)
 300             {
 301                 Log.Info(Globals.LogTag, "Failed to get Service Data List, Error - " + (BluetoothError)ret);
 302                 serviceCount = 0;
 303                 Marshal.FreeHGlobal(serviceListArray);
 304                 Marshal.FreeHGlobal(scanDataStruct.AdvData);
 305                 Marshal.FreeHGlobal(scanDataStruct.ScanData);
 306                 return null;
 307             }
 308
 309             BluetoothLeServiceDataStruct[] svcList = new BluetoothLeServiceDataStruct[_serviceListCount];
 310             int sizePointerToABC = Marshal.SizeOf(new BluetoothLeServiceDataStruct());
 311             for (int i = 0; i < _serviceListCount; i++)
 312             {
 313                 svcList[i] = (BluetoothLeServiceDataStruct)Marshal.PtrToStructure(new IntPtr(serviceListArray.ToInt32() + (i * sizePointerToABC)), typeof(BluetoothLeServiceDataStruct));
 314                 Log.Info(Globals.LogTag, " Uuid : " + svcList[i].ServiceUuid + "length :  " + svcList[i].ServiceDataLength);
 315
 316                 _list.Add(BluetoothUtils.ConvertStructToLeServiceData(svcList[i]));
 317             }
 318
 319             serviceCount = _serviceListCount;
 320
 321             Interop.Libc.Free(serviceListArray);
 322             Marshal.FreeHGlobal(scanDataStruct.AdvData);
 323             Marshal.FreeHGlobal(scanDataStruct.ScanData);
 324             return _list;
 325         }
 326
 327         internal int FreeServiceDataList()
 328         {
 329             if (_list.Count > 0)
 330             {
 331                 int iServiceDataSize = Marshal.SizeOf(typeof(BluetoothLeServiceData));
 332                 IntPtr structServiceData = Marshal.AllocHGlobal(iServiceDataSize);
 333                 Marshal.StructureToPtr(_list, structServiceData, false);
 334
 335                 int ret = Interop.Bluetooth.FreeServiceDataList(structServiceData, _serviceListCount);
 336                 if (ret != (int)BluetoothError.None)
 337                 {
 338                     Log.Error(Globals.LogTag, "Failed to free Service Data List, Error - " + (BluetoothError)ret);
 339                     BluetoothErrorFactory.ThrowBluetoothException(ret);
 340                 }
 341
 342                 Marshal.FreeHGlobal(structServiceData);
 343             }
 344             return 0;
 345         }
 346
 347         internal int GetScanResultAppearance(BluetoothLeScanData scanData, BluetoothLePacketType packetType)
 348         {
 349             int appearance;
 350
 351             BluetoothLeScanDataStruct scanDataStruct = BluetoothUtils.ConvertLeScanDataToStruct (scanData);
 352
 353             int ret = Interop.Bluetooth.GetScanResultAppearance(ref scanDataStruct, packetType, out appearance);
 354             if (ret != (int)BluetoothError.None) {
 355                 Log.Error(Globals.LogTag, "Failed to get Appearance value- " + (BluetoothError)ret);
 356             }
 357             return appearance;
 358         }
 359
 360         internal ManufacturerData GetScanResultManufacturerData(BluetoothLeScanData scanData, BluetoothLePacketType packetType)
 361         {
 362             int dataId = 0;
 363             int dataLength = 0;
 364             IntPtr manufData;
 365
 366             BluetoothLeScanDataStruct scanDataStruct = BluetoothUtils.ConvertLeScanDataToStruct (scanData);
 367             ManufacturerData data = new ManufacturerData();
 368
 369             int ret = Interop.Bluetooth.GetScanResultManufacturerData(ref scanDataStruct, packetType, out dataId,
 370                 out manufData, out dataLength);
 371             if (ret != (int)BluetoothError.None)
 372             {
 373                 Log.Error(Globals.LogTag, "Failed to get Manufacturer data - " + (BluetoothError)ret);
 374                 return null;
 375             }
 376
 377             data.Id = dataId;
 378             data.DataLength = dataLength;
 379             if (data.DataLength > 0)
 380             {
 381                 data.Data = new byte[data.DataLength];
 382                 Marshal.Copy(manufData, data.Data, 0, data.DataLength);
 383             }
 384
 385             return data;
 386         }
 387
 388         internal int GattConnect(string remoteAddress, bool autoConnect)
 389         {
 390             int ret = Interop.Bluetooth.GattConnect (remoteAddress, autoConnect);
 391             if (ret != (int)BluetoothError.None)
 392             {
 393                 Log.Error(Globals.LogTag, "Failed to establish GATT connection - " + (BluetoothError)ret);
 394                 BluetoothErrorFactory.ThrowBluetoothException(ret);
 395             }
 396             return ret;
 397         }
 398
 399         internal int GattDisconnect(string remoteAddress)
 400         {
 401             int ret = Interop.Bluetooth.GattDisconnect (remoteAddress);
 402             if (ret != (int)BluetoothError.None)
 403             {
 404                 Log.Error(Globals.LogTag, "Failed to disconnect GATT connection - " + (BluetoothError)ret);
 405                 BluetoothErrorFactory.ThrowBluetoothException(ret);
 406             }
 407             return ret;
 408         }
 409
 410         internal int CreateAdvertiser(out IntPtr advertiserHandle)
 411         {
 412             return Interop.Bluetooth.CreateAdvertiser (out advertiserHandle);
 413         }
 414
 415         internal int DestroyAdvertiser(IntPtr advertiserHandle)
 416         {
 417             int ret =  Interop.Bluetooth.DestroyAdvertiser (advertiserHandle);
 418             if (ret != (int)BluetoothError.None) {
 419                 Log.Error(Globals.LogTag, "Failed to destroy the Advertiser- " + (BluetoothError)ret);
 420                 BluetoothErrorFactory.ThrowBluetoothException(ret);
 421             }
 422             return ret;
 423         }
 424
 425         internal int StartAdvertising(IntPtr advertisingHandle)
 426         {
 427             _advertisingStateChangedCallback = (int result, IntPtr advertiserHandle,
 428                             BluetoothLeAdvertisingState state, IntPtr userData) =>
 429             {
 430                 Log.Info(Globals.LogTag, "Setting advertising state changed callback !! " );
 431                 AdvertisingStateChangedEventArgs e = new AdvertisingStateChangedEventArgs(result, advertiserHandle, state);
 432                 _advertisingStateChanged(null, e);
 433             };
 434
 435             IntPtr uData = IntPtr.Zero;
 436             int ret = Interop.Bluetooth.BluetoothLeStartAdvertising (advertisingHandle,
 437                                    _advertisingStateChangedCallback, uData );
 438             if (ret != (int)BluetoothError.None)
 439             {
 440                 Log.Error(Globals.LogTag, "Failed to start BLE advertising - " + (BluetoothError)ret);
 441                 BluetoothErrorFactory.ThrowBluetoothException(ret);
 442             }
 443             return ret;
 444         }
 445
 446
 447         internal int StopAdvertising(IntPtr advertisingHandle)
 448         {
 449             return Interop.Bluetooth.BluetoothLeStopAdvertising (advertisingHandle);
 450         }
 451     }
 452 }