IAudioPolicyService.h revision 57dae99c9fcd6becd2b5ed0c53f277ba4d7dbcfc 
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
17#ifndef ANDROID_IAUDIOPOLICYSERVICE_H
18#define ANDROID_IAUDIOPOLICYSERVICE_H
19
20#include <stdint.h>
21#include <sys/types.h>
22#include <unistd.h>
23
24#include <utils/RefBase.h>
25#include <utils/Errors.h>
26#include <binder/IInterface.h>
27#include <media/AudioSystem.h>
28
29#include <system/audio_policy.h>
30
31namespace android {
32
33// ----------------------------------------------------------------------------
34
35class IAudioPolicyService : public IInterface
36{
37public:
38    DECLARE_META_INTERFACE(AudioPolicyService);
39
40    //
41    // IAudioPolicyService interface (see AudioPolicyInterface for method descriptions)
42    //
43    virtual status_t setDeviceConnectionState(audio_devices_t device,
44                                              audio_policy_dev_state_t state,
45                                              const char *device_address) = 0;
46    virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device,
47                                                                          const char *device_address) = 0;
48    virtual status_t setPhoneState(int state) = 0;
49    virtual status_t setRingerMode(uint32_t mode, uint32_t mask) = 0;
50    virtual status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) = 0;
51    virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) = 0;
52    virtual audio_io_handle_t getOutput(audio_stream_type_t stream,
53                                        uint32_t samplingRate = 0,
54                                        uint32_t format = AUDIO_FORMAT_DEFAULT,
55                                        uint32_t channels = 0,
56                                        audio_policy_output_flags_t flags = AUDIO_POLICY_OUTPUT_FLAG_INDIRECT) = 0;
57    virtual status_t startOutput(audio_io_handle_t output,
58                                 audio_stream_type_t stream,
59                                 int session = 0) = 0;
60    virtual status_t stopOutput(audio_io_handle_t output,
61                                audio_stream_type_t stream,
62                                int session = 0) = 0;
63    virtual void releaseOutput(audio_io_handle_t output) = 0;
64    virtual audio_io_handle_t getInput(int inputSource,
65                                    uint32_t samplingRate = 0,
66                                    uint32_t format = AUDIO_FORMAT_DEFAULT,
67                                    uint32_t channels = 0,
68                                    audio_in_acoustics_t acoustics = (audio_in_acoustics_t)0,
69                                    int audioSession = 0) = 0;
70    virtual status_t startInput(audio_io_handle_t input) = 0;
71    virtual status_t stopInput(audio_io_handle_t input) = 0;
72    virtual void releaseInput(audio_io_handle_t input) = 0;
73    virtual status_t initStreamVolume(audio_stream_type_t stream,
74                                      int indexMin,
75                                      int indexMax) = 0;
76    virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, int index) = 0;
77    virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, int *index) = 0;
78    virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0;
79    virtual uint32_t getDevicesForStream(audio_stream_type_t stream) = 0;
80    virtual audio_io_handle_t getOutputForEffect(effect_descriptor_t *desc) = 0;
81    virtual status_t registerEffect(effect_descriptor_t *desc,
82                                    audio_io_handle_t io,
83                                    uint32_t strategy,
84                                    int session,
85                                    int id) = 0;
86    virtual status_t unregisterEffect(int id) = 0;
87    virtual bool     isStreamActive(int stream, uint32_t inPastMs = 0) const = 0;
88    virtual status_t queryDefaultPreProcessing(int audioSession,
89                                              effect_descriptor_t *descriptors,
90                                              uint32_t *count) = 0;
91};
92
93
94// ----------------------------------------------------------------------------
95
96class BnAudioPolicyService : public BnInterface<IAudioPolicyService>
97{
98public:
99    virtual status_t    onTransact( uint32_t code,
100                                    const Parcel& data,
101                                    Parcel* reply,
102                                    uint32_t flags = 0);
103};
104
105// ----------------------------------------------------------------------------
106
107}; // namespace android
108
109#endif // ANDROID_IAUDIOPOLICYSERVICE_H
110