1 /*
2  * Copyright (C) 2016 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_IAUDIOMANAGER_H
18 #define ANDROID_IAUDIOMANAGER_H
19 
20 #include <utils/Errors.h>
21 #include <binder/IInterface.h>
22 #include <hardware/power.h>
23 #include <system/audio.h>
24 
25 namespace android {
26 
27 // ----------------------------------------------------------------------------
28 
29 class IAudioManager : public IInterface
30 {
31 public:
32     // These transaction IDs must be kept in sync with the method order from
33     // IAudioService.aidl.
34     enum {
35         TRACK_PLAYER                          = IBinder::FIRST_CALL_TRANSACTION,
36         PLAYER_ATTRIBUTES                     = IBinder::FIRST_CALL_TRANSACTION + 1,
37         PLAYER_EVENT                          = IBinder::FIRST_CALL_TRANSACTION + 2,
38         RELEASE_PLAYER                        = IBinder::FIRST_CALL_TRANSACTION + 3,
39     };
40 
41     DECLARE_META_INTERFACE(AudioManager)
42 
43     // The parcels created by these methods must be kept in sync with the
44     // corresponding methods from IAudioService.aidl and objects it imports.
45     virtual audio_unique_id_t trackPlayer(player_type_t playerType, audio_usage_t usage,
46                 audio_content_type_t content, const sp<IBinder>& player) = 0;
47     /*oneway*/ virtual status_t playerAttributes(audio_unique_id_t piid, audio_usage_t usage,
48                 audio_content_type_t content)= 0;
49     /*oneway*/ virtual status_t playerEvent(audio_unique_id_t piid, player_state_t event) = 0;
50     /*oneway*/ virtual status_t releasePlayer(audio_unique_id_t piid) = 0;
51 };
52 
53 // ----------------------------------------------------------------------------
54 
55 }; // namespace android
56 
57 #endif // ANDROID_IAUDIOMANAGER_H
58