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;
23
24/**
25* Static helper methods and constants to decode the ParcelUuid of remote devices.
26*  @hide
27*/
28public final class BluetoothUuid {
29
30    /* See Bluetooth Assigned Numbers document - SDP section, to get the values of UUIDs
31     * for the various services.
32     *
33     * The following 128 bit values are calculated as:
34     *  uuid * 2^96 + BASE_UUID
35     */
36    public static final ParcelUuid AudioSink =
37            ParcelUuid.fromString("0000110B-0000-1000-8000-00805F9B34FB");
38    public static final ParcelUuid AudioSource =
39            ParcelUuid.fromString("0000110A-0000-1000-8000-00805F9B34FB");
40    public static final ParcelUuid AdvAudioDist =
41            ParcelUuid.fromString("0000110D-0000-1000-8000-00805F9B34FB");
42    public static final ParcelUuid HSP =
43            ParcelUuid.fromString("00001108-0000-1000-8000-00805F9B34FB");
44    public static final ParcelUuid Handsfree =
45            ParcelUuid.fromString("0000111E-0000-1000-8000-00805F9B34FB");
46    public static final ParcelUuid AvrcpController =
47            ParcelUuid.fromString("0000110E-0000-1000-8000-00805F9B34FB");
48    public static final ParcelUuid AvrcpTarget =
49            ParcelUuid.fromString("0000110C-0000-1000-8000-00805F9B34FB");
50    public static final ParcelUuid ObexObjectPush =
51            ParcelUuid.fromString("00001105-0000-1000-8000-00805f9b34fb");
52
53    public static final ParcelUuid[] RESERVED_UUIDS = {
54        AudioSink, AudioSource, AdvAudioDist, HSP, Handsfree, AvrcpController, AvrcpTarget,
55        ObexObjectPush};
56
57    public static boolean isAudioSource(ParcelUuid uuid) {
58        return uuid.equals(AudioSource);
59    }
60
61    public static boolean isAudioSink(ParcelUuid uuid) {
62        return uuid.equals(AudioSink);
63    }
64
65    public static boolean isAdvAudioDist(ParcelUuid uuid) {
66        return uuid.equals(AdvAudioDist);
67    }
68
69    public static boolean isHandsfree(ParcelUuid uuid) {
70        return uuid.equals(Handsfree);
71    }
72
73    public static boolean isHeadset(ParcelUuid uuid) {
74        return uuid.equals(HSP);
75    }
76
77    public static boolean isAvrcpController(ParcelUuid uuid) {
78        return uuid.equals(AvrcpController);
79    }
80
81    public static boolean isAvrcpTarget(ParcelUuid uuid) {
82        return uuid.equals(AvrcpTarget);
83    }
84
85    /**
86     * Returns true if ParcelUuid is present in uuidArray
87     *
88     * @param uuidArray - Array of ParcelUuids
89     * @param uuid
90     */
91    public static boolean isUuidPresent(ParcelUuid[] uuidArray, ParcelUuid uuid) {
92        if ((uuidArray == null || uuidArray.length == 0) && uuid == null)
93            return true;
94
95        if (uuidArray == null)
96            return false;
97
98        for (ParcelUuid element: uuidArray) {
99            if (element.equals(uuid)) return true;
100        }
101        return false;
102    }
103
104    /**
105     * Returns true if there any common ParcelUuids in uuidA and uuidB.
106     *
107     * @param uuidA - List of ParcelUuids
108     * @param uuidB - List of ParcelUuids
109     *
110     */
111    public static boolean containsAnyUuid(ParcelUuid[] uuidA, ParcelUuid[] uuidB) {
112        if (uuidA == null && uuidB == null) return true;
113
114        if (uuidA == null) {
115            return uuidB.length == 0 ? true : false;
116        }
117
118        if (uuidB == null) {
119            return uuidA.length == 0 ? true : false;
120        }
121
122        HashSet<ParcelUuid> uuidSet = new HashSet<ParcelUuid> (Arrays.asList(uuidA));
123        for (ParcelUuid uuid: uuidB) {
124            if (uuidSet.contains(uuid)) return true;
125        }
126        return false;
127    }
128
129    /**
130     * Returns true if all the ParcelUuids in ParcelUuidB are present in
131     * ParcelUuidA
132     *
133     * @param uuidA - Array of ParcelUuidsA
134     * @param uuidB - Array of ParcelUuidsB
135     *
136     */
137    public static boolean containsAllUuids(ParcelUuid[] uuidA, ParcelUuid[] uuidB) {
138        if (uuidA == null && uuidB == null) return true;
139
140        if (uuidA == null) {
141            return uuidB.length == 0 ? true : false;
142        }
143
144        if (uuidB == null) return true;
145
146        HashSet<ParcelUuid> uuidSet = new HashSet<ParcelUuid> (Arrays.asList(uuidA));
147        for (ParcelUuid uuid: uuidB) {
148            if (!uuidSet.contains(uuid)) return false;
149        }
150        return true;
151    }
152
153}
154