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1e494cf4 JB |
1 | /* |
2 | * Copyright (C) 2012 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 | ||
17 | #ifndef ANDROID_INCLUDE_BT_AV_H | |
18 | #define ANDROID_INCLUDE_BT_AV_H | |
19 | ||
20 | __BEGIN_DECLS | |
21 | ||
22 | /* Bluetooth AV connection states */ | |
23 | typedef enum { | |
24 | BTAV_CONNECTION_STATE_DISCONNECTED = 0, | |
25 | BTAV_CONNECTION_STATE_CONNECTING, | |
26 | BTAV_CONNECTION_STATE_CONNECTED, | |
27 | BTAV_CONNECTION_STATE_DISCONNECTING | |
28 | } btav_connection_state_t; | |
29 | ||
30 | /* Bluetooth AV datapath states */ | |
31 | typedef enum { | |
32 | BTAV_AUDIO_STATE_REMOTE_SUSPEND = 0, | |
33 | BTAV_AUDIO_STATE_STOPPED, | |
34 | BTAV_AUDIO_STATE_STARTED, | |
35 | } btav_audio_state_t; | |
36 | ||
37 | ||
38 | /** Callback for connection state change. | |
39 | * state will have one of the values from btav_connection_state_t | |
40 | */ | |
41 | typedef void (* btav_connection_state_callback)(btav_connection_state_t state, | |
42 | bt_bdaddr_t *bd_addr); | |
43 | ||
44 | /** Callback for audiopath state change. | |
45 | * state will have one of the values from btav_audio_state_t | |
46 | */ | |
47 | typedef void (* btav_audio_state_callback)(btav_audio_state_t state, | |
48 | bt_bdaddr_t *bd_addr); | |
49 | ||
50 | /** BT-AV callback structure. */ | |
51 | typedef struct { | |
52 | /** set to sizeof(btav_callbacks_t) */ | |
53 | size_t size; | |
54 | btav_connection_state_callback connection_state_cb; | |
55 | btav_audio_state_callback audio_state_cb; | |
56 | } btav_callbacks_t; | |
57 | ||
58 | /** | |
59 | * NOTE: | |
60 | * | |
61 | * 1. AVRCP 1.0 shall be supported initially. AVRCP passthrough commands | |
62 | * shall be handled internally via uinput | |
63 | * | |
64 | * 2. A2DP data path shall be handled via a socket pipe between the AudioFlinger | |
65 | * android_audio_hw library and the Bluetooth stack. | |
66 | * | |
67 | */ | |
68 | /** Represents the standard BT-AV interface. */ | |
69 | typedef struct { | |
70 | ||
71 | /** set to sizeof(btav_interface_t) */ | |
72 | size_t size; | |
73 | /** | |
74 | * Register the BtAv callbacks | |
75 | */ | |
76 | bt_status_t (*init)( btav_callbacks_t* callbacks ); | |
77 | ||
78 | /** connect to headset */ | |
79 | bt_status_t (*connect)( bt_bdaddr_t *bd_addr ); | |
80 | ||
81 | /** dis-connect from headset */ | |
82 | bt_status_t (*disconnect)( bt_bdaddr_t *bd_addr ); | |
83 | ||
84 | /** Closes the interface. */ | |
85 | void (*cleanup)( void ); | |
86 | } btav_interface_t; | |
87 | ||
88 | __END_DECLS | |
89 | ||
90 | #endif /* ANDROID_INCLUDE_BT_AV_H */ |