1/*
2 * Copyright (C) 2009 The Android Open Source Project
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
17package android.bluetooth;
18
19import android.os.ParcelUuid;
20
21import java.util.Arrays;
22import java.util.HashSet;
23import java.util.UUID;
24
25/**
26* Static helper methods and constants to decode the ParcelUuid of remote devices.
27*  @hide
28*/
29public final class BluetoothUuid {
30
31    /* See Bluetooth Assigned Numbers document - SDP section, to get the values of UUIDs
32     * for the various services.
33     *
34     * The following 128 bit values are calculated as:
35     *  uuid * 2^96 + BASE_UUID
36     */
37    public static final ParcelUuid AudioSink =
38            ParcelUuid.fromString("0000110B-0000-1000-8000-00805F9B34FB");
39    public static final ParcelUuid AudioSource =
40            ParcelUuid.fromString("0000110A-0000-1000-8000-00805F9B34FB");
41    public static final ParcelUuid AdvAudioDist =
42            ParcelUuid.fromString("0000110D-0000-1000-8000-00805F9B34FB");
43    public static final ParcelUuid HSP =
44            ParcelUuid.fromString("00001108-0000-1000-8000-00805F9B34FB");
45    public static final ParcelUuid HSP_AG =
46            ParcelUuid.fromString("00001112-0000-1000-8000-00805F9B34FB");
47    public static final ParcelUuid Handsfree =
48            ParcelUuid.fromString("0000111E-0000-1000-8000-00805F9B34FB");
49    public static final ParcelUuid Handsfree_AG =
50            ParcelUuid.fromString("0000111F-0000-1000-8000-00805F9B34FB");
51    public static final ParcelUuid AvrcpController =
52            ParcelUuid.fromString("0000110E-0000-1000-8000-00805F9B34FB");
53    public static final ParcelUuid AvrcpTarget =
54            ParcelUuid.fromString("0000110C-0000-1000-8000-00805F9B34FB");
55    public static final ParcelUuid ObexObjectPush =
56            ParcelUuid.fromString("00001105-0000-1000-8000-00805f9b34fb");
57    public static final ParcelUuid Hid =
58            ParcelUuid.fromString("00001124-0000-1000-8000-00805f9b34fb");
59    public static final ParcelUuid PANU =
60            ParcelUuid.fromString("00001115-0000-1000-8000-00805F9B34FB");
61    public static final ParcelUuid NAP =
62            ParcelUuid.fromString("00001116-0000-1000-8000-00805F9B34FB");
63    public static final ParcelUuid BNEP =
64            ParcelUuid.fromString("0000000f-0000-1000-8000-00805F9B34FB");
65    public static final ParcelUuid PBAP_PSE =
66            ParcelUuid.fromString("0000112f-0000-1000-8000-00805F9B34FB");
67
68    public static final ParcelUuid[] RESERVED_UUIDS = {
69        AudioSink, AudioSource, AdvAudioDist, HSP, Handsfree, AvrcpController, AvrcpTarget,
70        ObexObjectPush, PANU, NAP};
71
72    public static boolean isAudioSource(ParcelUuid uuid) {
73        return uuid.equals(AudioSource);
74    }
75
76    public static boolean isAudioSink(ParcelUuid uuid) {
77        return uuid.equals(AudioSink);
78    }
79
80    public static boolean isAdvAudioDist(ParcelUuid uuid) {
81        return uuid.equals(AdvAudioDist);
82    }
83
84    public static boolean isHandsfree(ParcelUuid uuid) {
85        return uuid.equals(Handsfree);
86    }
87
88    public static boolean isHeadset(ParcelUuid uuid) {
89        return uuid.equals(HSP);
90    }
91
92    public static boolean isAvrcpController(ParcelUuid uuid) {
93        return uuid.equals(AvrcpController);
94    }
95
96    public static boolean isAvrcpTarget(ParcelUuid uuid) {
97        return uuid.equals(AvrcpTarget);
98    }
99
100    public static boolean isInputDevice(ParcelUuid uuid) {
101        return uuid.equals(Hid);
102    }
103
104    public static boolean isPanu(ParcelUuid uuid) {
105        return uuid.equals(PANU);
106    }
107
108    public static boolean isNap(ParcelUuid uuid) {
109        return uuid.equals(NAP);
110    }
111
112    public static boolean isBnep(ParcelUuid uuid) {
113        return uuid.equals(BNEP);
114    }
115    /**
116     * Returns true if ParcelUuid is present in uuidArray
117     *
118     * @param uuidArray - Array of ParcelUuids
119     * @param uuid
120     */
121    public static boolean isUuidPresent(ParcelUuid[] uuidArray, ParcelUuid uuid) {
122        if ((uuidArray == null || uuidArray.length == 0) && uuid == null)
123            return true;
124
125        if (uuidArray == null)
126            return false;
127
128        for (ParcelUuid element: uuidArray) {
129            if (element.equals(uuid)) return true;
130        }
131        return false;
132    }
133
134    /**
135     * Returns true if there any common ParcelUuids in uuidA and uuidB.
136     *
137     * @param uuidA - List of ParcelUuids
138     * @param uuidB - List of ParcelUuids
139     *
140     */
141    public static boolean containsAnyUuid(ParcelUuid[] uuidA, ParcelUuid[] uuidB) {
142        if (uuidA == null && uuidB == null) return true;
143
144        if (uuidA == null) {
145            return uuidB.length == 0 ? true : false;
146        }
147
148        if (uuidB == null) {
149            return uuidA.length == 0 ? true : false;
150        }
151
152        HashSet<ParcelUuid> uuidSet = new HashSet<ParcelUuid> (Arrays.asList(uuidA));
153        for (ParcelUuid uuid: uuidB) {
154            if (uuidSet.contains(uuid)) return true;
155        }
156        return false;
157    }
158
159    /**
160     * Returns true if all the ParcelUuids in ParcelUuidB are present in
161     * ParcelUuidA
162     *
163     * @param uuidA - Array of ParcelUuidsA
164     * @param uuidB - Array of ParcelUuidsB
165     *
166     */
167    public static boolean containsAllUuids(ParcelUuid[] uuidA, ParcelUuid[] uuidB) {
168        if (uuidA == null && uuidB == null) return true;
169
170        if (uuidA == null) {
171            return uuidB.length == 0 ? true : false;
172        }
173
174        if (uuidB == null) return true;
175
176        HashSet<ParcelUuid> uuidSet = new HashSet<ParcelUuid> (Arrays.asList(uuidA));
177        for (ParcelUuid uuid: uuidB) {
178            if (!uuidSet.contains(uuid)) return false;
179        }
180        return true;
181    }
182
183    /**
184     * Extract the Service Identifier or the actual uuid from the Parcel Uuid.
185     * For example, if 0000110B-0000-1000-8000-00805F9B34FB is the parcel Uuid,
186     * this function will return 110B
187     * @param parcelUuid
188     * @return the service identifier.
189     */
190    public static int getServiceIdentifierFromParcelUuid(ParcelUuid parcelUuid) {
191        UUID uuid = parcelUuid.getUuid();
192        long value = (uuid.getMostSignificantBits() & 0x0000FFFF00000000L) >>> 32;
193        return (int)value;
194    }
195}
196