BluetoothGattCharacteristic.java revision 9908112fd085d8b0d91e0562d32eebd1884f09a5
19908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta/* 29908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Copyright (C) 2013 The Android Open Source Project 39908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 49908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Licensed under the Apache License, Version 2.0 (the "License"); 59908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * you may not use this file except in compliance with the License. 69908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * You may obtain a copy of the License at 79908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 89908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * http://www.apache.org/licenses/LICENSE-2.0 99908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Unless required by applicable law or agreed to in writing, software 119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * distributed under the License is distributed on an "AS IS" BASIS, 129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * See the License for the specific language governing permissions and 149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * limitations under the License. 159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battapackage android.bluetooth; 179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battaimport java.util.ArrayList; 199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battaimport java.util.IllegalFormatConversionException; 209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battaimport java.util.List; 219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battaimport java.util.UUID; 229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta/** 249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Represents a Bluetooth Gatt Characteristic 259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battapublic class BluetoothGattCharacteristic { 289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic proprty: Characteristic is broadcastable. 319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_BROADCAST = 0x01; 339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic is readable. 369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_READ = 0x02; 389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic can be written without response. 419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_WRITE_NO_RESPONSE = 0x04; 439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic can be written. 469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_WRITE = 0x08; 489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic supports notification 519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_NOTIFY = 0x10; 539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic supports indication 569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_INDICATE = 0x20; 589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic supports write with signature 619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_SIGNED_WRITE = 0x40; 639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic has extended properties 669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_EXTENDED_PROPS = 0x80; 689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic read permission 719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_READ = 0x01; 739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow encrypted read operations 769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_READ_ENCRYPTED = 0x02; 789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow reading with man-in-the-middle protection 819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_READ_ENCRYPTED_MITM = 0x04; 839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic write permission 869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE = 0x10; 889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow encrypted writes 919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE_ENCRYPTED = 0x20; 939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow encrypted writes with man-in-the-middle 969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * protection 979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE_ENCRYPTED_MITM = 0x40; 999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow signed write operations 1029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE_SIGNED = 0x80; 1049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow signed write operations with 1079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * man-in-the-middle protection 1089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE_SIGNED_MITM = 0x100; 1109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Write characteristic, requesting acknoledgement by the remote device 1139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int WRITE_TYPE_DEFAULT = 0x02; 1159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Wrtite characteristic without requiring a response by the remote device 1189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int WRITE_TYPE_NO_RESPONSE = 0x01; 1209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Write characteristic including and authenticated signature 1239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int WRITE_TYPE_SIGNED = 0x04; 1259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type uint8 1289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_UINT8 = 0x11; 1309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type uint16 1339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_UINT16 = 0x12; 1359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type uint32 1389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_UINT32 = 0x14; 1409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type sint8 1439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_SINT8 = 0x21; 1459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type sint16 1489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_SINT16 = 0x22; 1509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type sint32 1539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_SINT32 = 0x24; 1559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type sfloat (16-bit float) 1589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_SFLOAT = 0x32; 1609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type float (32-bit float) 1639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_FLOAT = 0x34; 1659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * The UUID of this characteristic. 1699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected UUID mUuid; 1729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Instance ID for this characteristic. 1759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mInstance; 1789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic properties. 1819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mProperties; 1849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permissions. 1879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mPermissions; 1909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Key size (default = 16). 1939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mKeySize = 16; 1969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Write type for this characteristic. 1999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * See WRITE_TYPE_* constants. 2009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mWriteType; 2039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Back-reference to the service this characteristic belongs to. 2069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected BluetoothGattService mService; 2099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * The cached value of this characteristic. 2129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected byte[] mValue; 2159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * List of descriptors included in this characteristic. 2189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected List<BluetoothGattDescriptor> mDescriptors; 2209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Create a new BluetoothGattCharacteristic 2239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /*package*/ BluetoothGattCharacteristic(BluetoothGattService service, 2269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta UUID uuid, int instanceId, 2279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int properties, int permissions) { 2289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mUuid = uuid; 2299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mInstance = instanceId; 2309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mProperties = properties; 2319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mPermissions = permissions; 2329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mService = service; 2339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue = null; 2349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mDescriptors = new ArrayList<BluetoothGattDescriptor>(); 2359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if ((mProperties & PROPERTY_WRITE_NO_RESPONSE) != 0) { 2379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mWriteType = WRITE_TYPE_NO_RESPONSE; 2389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } else { 2399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mWriteType = WRITE_TYPE_DEFAULT; 2409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the deisred key size. 2459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /*package*/ int getKeySize() { 2489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mKeySize; 2499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Add a descriptor to this characteristic 2539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /*package*/ void addDescriptor(BluetoothGattDescriptor descriptor) { 2569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mDescriptors.add(descriptor); 2579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the service this characteristic belongs to. 2619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return The asscociated service 2629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public BluetoothGattService getService() { 2649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mService; 2659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the UUID of this characteristic 2699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 2709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 2719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return UUID of this characteristic 2729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public UUID getUuid() { 2749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mUuid; 2759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the instance ID for this characteristic. 2799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 2809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>If a remote device offers multiple characteristics with the same UUID, 2819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * the instance ID is used to distuinguish between characteristics. 2829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 2839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 2849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 2859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Instance ID of this characteristic 2869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public int getInstanceId() { 2889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mInstance; 2899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the properties of this characteristic. 2939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 2949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>The properties contain a bit mask of property flags indicating 2959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * the features of this characteristic. 2969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 2979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 2989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 2999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Properties of this characteristic 3009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public int getProperties() { 3029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mProperties; 3039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the permissions for this characteristic. 3079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 3089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Permissions of this characteristic 3109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public int getPermissions() { 3129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mPermissions; 3139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Gets the write type for this characteristic. 3179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 3189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Write type for this characteristic 3209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public int getWriteType() { 3229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mWriteType; 3239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Set the write type for this characteristic 3279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Setting the write type of a characteristic determines how the 3299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link BluetoothGatt#writeCharacteristic} function write this 3309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * characteristic. 3319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>The default write type for a characteristic is 3339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link #WRITE_TYPE_DEFAULT}. 3349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 3369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param writeType The write type to for this characteristic. Can be one 3389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * of: 3399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link #WRITE_TYPE_DEFAULT}, 3409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link #WRITE_TYPE_NO_RESPONSE} or 3419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link #WRITE_TYPE_SIGNED}. 3429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public void setWriteType(int writeType) { 3449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mWriteType = writeType; 3459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns a list of descriptors for this characteristic. 3499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 3509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Descriptors for this characteristic 3529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public List<BluetoothGattDescriptor> getDescriptors() { 3549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mDescriptors; 3559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns a descriptor with a given UUID out of the list of 3599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * descriptors for this characteristic. 3609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 3629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Gatt descriptor object or null if no descriptor with the 3649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * given UUID was found. 3659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public BluetoothGattDescriptor getDescriptor(UUID uuid) { 3679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta for(BluetoothGattDescriptor descriptor : mDescriptors) { 3689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (descriptor.getUuid().equals(uuid)) { 3699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return descriptor; 3709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return null; 3739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Get the stored value for this characteristic. 3779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>This function returns the stored value for this characteristic as 3799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * retrieved by calling {@link BluetoothGatt#readCharacteristic}. To cached 3809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * value of the characteristic is updated as a result of a read characteristic 3819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * operation or if a characteristic update notification has been received. 3829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 3849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Cached value of the characteristic 3869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public byte[] getValue() { 3889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mValue; 3899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Return the stored value of this characteristic. 3939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>The formatType parameter determines how the characteristic value 3959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * is to be interpreted. For example, settting formatType to 3969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link #FORMAT_UINT16} specifies that the first two bytes of the 3979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * characteristic value at the given offset are interpreted to generate the 3989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * return value. 3999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 4019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param formatType The format type used to interpret the characteristic 4039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * value. 4049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the integer value can be found. 4059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Cached value of the characteristic or null of offset exceeds 4069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * value size. 4079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 4089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public Integer getIntValue(int formatType, int offset) { 4099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if ((offset + getTypeLen(formatType)) > mValue.length) return null; 4109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta switch (formatType) { 4129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT8: 4139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedByteToInt(mValue[offset]); 4149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT16: 4169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedBytesToInt(mValue[offset], mValue[offset+1]); 4179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT32: 4199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedBytesToInt(mValue[offset], mValue[offset+1], 4209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset+2], mValue[offset+3]); 4219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT8: 4229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedToSigned(unsignedByteToInt(mValue[offset]), 8); 4239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT16: 4259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedToSigned(unsignedBytesToInt(mValue[offset], 4269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset+1]), 16); 4279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT32: 4299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedToSigned(unsignedBytesToInt(mValue[offset], 4309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset+1], mValue[offset+2], mValue[offset+3]), 32); 4319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return null; 4349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 4379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Return the stored value of this characteristic. 4389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #getValue} for details. 4399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 4409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param formatType The format type used to interpret the characteristic 4429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * value. 4439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the float value can be found. 4449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Cached value of the characteristic at a given offset or null 4459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * if the requested offset exceeds the value size. 4469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 4479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public Float getFloatValue(int formatType, int offset) { 4489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if ((offset + getTypeLen(formatType)) > mValue.length) return null; 4499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta switch (formatType) { 4519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SFLOAT: 4529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return bytesToFloat(mValue[offset], mValue[offset+1]); 4539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_FLOAT: 4559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return bytesToFloat(mValue[offset], mValue[offset+1], 4569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset+2], mValue[offset+3]); 4579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return null; 4609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 4639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Return the stored value of this characteristic. 4649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #getValue} for details. 4659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 4669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the string value can be found. 4679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Cached value of the characteristic 4689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 4699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public String getStringValue(int offset) { 4709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (offset > mValue.length) return null; 4719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta byte[] strBytes = new byte[mValue.length - offset]; 4729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta for (int i=0; i != (mValue.length-offset); ++i) strBytes[i] = mValue[offset+i]; 4739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return new String(strBytes); 4749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 4779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Updates the locally stored value of this characteristic. 4789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>This function modifies the locally stored cached value of this 4809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * characteristic. To send the value to the remote device, call 4819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link BluetoothGatt#writeCharacteristic} to send the value to the 4829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * remote device. 4839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 4859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param value New value for this characteristic 4879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return true if the locally stored value has been set, false if the 4889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * requested value could not be stored locally. 4899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 4909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public boolean setValue(byte[] value) { 4919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue = value; 4929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return true; 4939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 4969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Set the locally stored value of this characteristic. 4979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #setValue(byte[])} for details. 4989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 4999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 5009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param value New value for this characteristic 5019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param formatType Integer format type used to transform the value parameter 5029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the value should be placed 5039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return true if the locally stored value has been set 5049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 5059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public boolean setValue(int value, int formatType, int offset) { 5069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int len = offset + getTypeLen(formatType); 5079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (mValue == null) mValue = new byte[len]; 5089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (len > mValue.length) return false; 5099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta switch (formatType) { 5119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT8: 5129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta value = intToSignedBits(value, 8); 5139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta // Fall-through intended 5149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT8: 5159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] = (byte)(value & 0xFF); 5169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 5179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT16: 5199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta value = intToSignedBits(value, 16); 5209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta // Fall-through intended 5219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT16: 5229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)(value & 0xFF); 5239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] = (byte)((value >> 8) & 0xFF); 5249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 5259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT32: 5279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta value = intToSignedBits(value, 32); 5289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta // Fall-through intended 5299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT32: 5309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)(value & 0xFF); 5319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)((value >> 8) & 0xFF); 5329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] = (byte)((value >> 16) & 0xFF); 5339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 5349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta default: 5369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return false; 5379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 5389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return true; 5399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 5409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 5429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Set the locally stored value of this characteristic. 5439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #setValue(byte[])} for details. 5449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 5459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param mantissa Mantissa for this characteristic 5469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param exponent exponent value for this characteristic 5479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param formatType Float format type used to transform the value parameter 5489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the value should be placed 5499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return true if the locally stored value has been set 5509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 5519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public boolean setValue(int mantissa, int exponent, int formatType, int offset) { 5529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int len = offset + getTypeLen(formatType); 5539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (mValue == null) mValue = new byte[len]; 5549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (len > mValue.length) return false; 5559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta switch (formatType) { 5579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SFLOAT: 5589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mantissa = intToSignedBits(mantissa, 12); 5599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta exponent = intToSignedBits(exponent, 4); 5609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)(mantissa & 0xFF); 5619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] = (byte)((mantissa >> 8) & 0x0F); 5629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] += (byte)((exponent & 0x0F) << 4); 5639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 5649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_FLOAT: 5669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mantissa = intToSignedBits(mantissa, 24); 5679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta exponent = intToSignedBits(exponent, 8); 5689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)(mantissa & 0xFF); 5699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)((mantissa >> 8) & 0xFF); 5709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)((mantissa >> 16) & 0xFF); 5719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] += (byte)(exponent & 0xFF); 5729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 5739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta default: 5759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return false; 5769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 5779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return true; 5799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 5809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 5829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Set the locally stored value of this characteristic. 5839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #setValue(byte[])} for details. 5849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 5859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param value New value for this characteristic 5869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return true if the locally stored value has been set 5879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 5889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public boolean setValue(String value) { 5899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue = value.getBytes(); 5909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return true; 5919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 5929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 5949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the size of a give value type. 5959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 5969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 5979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int getTypeLen(int formatType) { 5989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return formatType & 0xF; 5999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert a signed byte to an unsigned int. 6039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 6049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int unsignedByteToInt(byte b) { 6069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return b & 0xFF; 6079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert signed bytes to a 16-bit unsigned int. 6119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 6129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int unsignedBytesToInt(byte b0, byte b1) { 6149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return (unsignedByteToInt(b0) + (unsignedByteToInt(b1) << 8)); 6159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert signed bytes to a 32-bit unsigned int. 6199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 6209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int unsignedBytesToInt(byte b0, byte b1, byte b2, byte b3) { 6229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return (unsignedByteToInt(b0) + (unsignedByteToInt(b1) << 8)) 6239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta + (unsignedByteToInt(b2) << 16) + (unsignedByteToInt(b3) << 24); 6249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert signed bytes to a 16-bit short float value. 6289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 6299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private float bytesToFloat(byte b0, byte b1) { 6319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int mantissa = unsignedToSigned(unsignedByteToInt(b0) 6329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta + ((unsignedByteToInt(b1) & 0x0F) << 8), 12); 6339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int exponent = unsignedToSigned(unsignedByteToInt(b1) >> 4, 4); 6349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return (float)(mantissa * Math.pow(10, exponent)); 6359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert signed bytes to a 32-bit short float value. 6399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 6409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private float bytesToFloat(byte b0, byte b1, byte b2, byte b3) { 6429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int mantissa = unsignedToSigned(unsignedByteToInt(b0) 6439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta + (unsignedByteToInt(b1) << 8) 6449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta + (unsignedByteToInt(b2) << 16), 24); 6459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return (float)(mantissa * Math.pow(10, b3)); 6469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert an unsigned integer value to a two's-complement encoded 6509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * signed value. 6519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 6529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int unsignedToSigned(int unsigned, int size) { 6549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if ((unsigned & (1 << size-1)) != 0) { 6559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta unsigned = -1 * ((1 << size-1) - (unsigned & ((1 << size-1) - 1))); 6569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsigned; 6589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert an integer into the signed bits of a given length. 6629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 6639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int intToSignedBits(int i, int size) { 6659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (i < 0) { 6669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta i = (1 << size-1) + (i & ((1 << size-1) - 1)); 6679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return i; 6699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta} 671