IAudioPolicyService.h revision aa9811945f575614b3482d09e4d969792701cebb 
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#include <media/AudioPolicy.h>
29#include <media/IAudioPolicyServiceClient.h>
30
31#include <system/audio_policy.h>
32
33namespace android {
34
35// ----------------------------------------------------------------------------
36
37class IAudioPolicyService : public IInterface
38{
39public:
40    DECLARE_META_INTERFACE(AudioPolicyService);
41
42    //
43    // IAudioPolicyService interface (see AudioPolicyInterface for method descriptions)
44    //
45    virtual status_t setDeviceConnectionState(audio_devices_t device,
46                                              audio_policy_dev_state_t state,
47                                              const char *device_address,
48                                              const char *device_name) = 0;
49    virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device,
50                                                                  const char *device_address) = 0;
51    virtual status_t setPhoneState(audio_mode_t state) = 0;
52    virtual status_t setForceUse(audio_policy_force_use_t usage,
53                                    audio_policy_forced_cfg_t config) = 0;
54    virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) = 0;
55    virtual audio_io_handle_t getOutput(audio_stream_type_t stream,
56                                        uint32_t samplingRate = 0,
57                                        audio_format_t format = AUDIO_FORMAT_DEFAULT,
58                                        audio_channel_mask_t channelMask = 0,
59                                        audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
60                                        const audio_offload_info_t *offloadInfo = NULL) = 0;
61    virtual status_t getOutputForAttr(const audio_attributes_t *attr,
62                                        audio_io_handle_t *output,
63                                        audio_session_t session,
64                                        audio_stream_type_t *stream,
65                                        uint32_t samplingRate = 0,
66                                        audio_format_t format = AUDIO_FORMAT_DEFAULT,
67                                        audio_channel_mask_t channelMask = 0,
68                                        audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
69                                        audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE,
70                                        const audio_offload_info_t *offloadInfo = NULL) = 0;
71    virtual status_t startOutput(audio_io_handle_t output,
72                                 audio_stream_type_t stream,
73                                 audio_session_t session) = 0;
74    virtual status_t stopOutput(audio_io_handle_t output,
75                                audio_stream_type_t stream,
76                                audio_session_t session) = 0;
77    virtual void releaseOutput(audio_io_handle_t output,
78                               audio_stream_type_t stream,
79                               audio_session_t session) = 0;
80    virtual status_t  getInputForAttr(const audio_attributes_t *attr,
81                                      audio_io_handle_t *input,
82                                      audio_session_t session,
83                                      uint32_t samplingRate,
84                                      audio_format_t format,
85                                      audio_channel_mask_t channelMask,
86                                      audio_input_flags_t flags) = 0;
87    virtual status_t startInput(audio_io_handle_t input,
88                                audio_session_t session) = 0;
89    virtual status_t stopInput(audio_io_handle_t input,
90                               audio_session_t session) = 0;
91    virtual void releaseInput(audio_io_handle_t input,
92                              audio_session_t session) = 0;
93    virtual status_t initStreamVolume(audio_stream_type_t stream,
94                                      int indexMin,
95                                      int indexMax) = 0;
96    virtual status_t setStreamVolumeIndex(audio_stream_type_t stream,
97                                          int index,
98                                          audio_devices_t device) = 0;
99    virtual status_t getStreamVolumeIndex(audio_stream_type_t stream,
100                                          int *index,
101                                          audio_devices_t device) = 0;
102    virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0;
103    virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0;
104    virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0;
105    virtual status_t registerEffect(const effect_descriptor_t *desc,
106                                    audio_io_handle_t io,
107                                    uint32_t strategy,
108                                    int session,
109                                    int id) = 0;
110    virtual status_t unregisterEffect(int id) = 0;
111    virtual status_t setEffectEnabled(int id, bool enabled) = 0;
112    virtual bool     isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0;
113    virtual bool     isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0)
114                             const = 0;
115    virtual bool     isSourceActive(audio_source_t source) const = 0;
116    virtual status_t queryDefaultPreProcessing(int audioSession,
117                                              effect_descriptor_t *descriptors,
118                                              uint32_t *count) = 0;
119   // Check if offload is possible for given format, stream type, sample rate,
120    // bit rate, duration, video and streaming or offload property is enabled
121    virtual bool isOffloadSupported(const audio_offload_info_t& info) = 0;
122
123    /* List available audio ports and their attributes */
124    virtual status_t listAudioPorts(audio_port_role_t role,
125                                    audio_port_type_t type,
126                                    unsigned int *num_ports,
127                                    struct audio_port *ports,
128                                    unsigned int *generation) = 0;
129
130    /* Get attributes for a given audio port */
131    virtual status_t getAudioPort(struct audio_port *port) = 0;
132
133    /* Create an audio patch between several source and sink ports */
134    virtual status_t createAudioPatch(const struct audio_patch *patch,
135                                       audio_patch_handle_t *handle) = 0;
136
137    /* Release an audio patch */
138    virtual status_t releaseAudioPatch(audio_patch_handle_t handle) = 0;
139
140    /* List existing audio patches */
141    virtual status_t listAudioPatches(unsigned int *num_patches,
142                                      struct audio_patch *patches,
143                                      unsigned int *generation) = 0;
144    /* Set audio port configuration */
145    virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0;
146
147    virtual void registerClient(const sp<IAudioPolicyServiceClient>& client) = 0;
148
149    virtual status_t acquireSoundTriggerSession(audio_session_t *session,
150                                           audio_io_handle_t *ioHandle,
151                                           audio_devices_t *device) = 0;
152
153    virtual status_t releaseSoundTriggerSession(audio_session_t session) = 0;
154
155    virtual audio_mode_t getPhoneState() = 0;
156
157    virtual status_t registerPolicyMixes(Vector<AudioMix> mixes, bool registration) = 0;
158};
159
160
161// ----------------------------------------------------------------------------
162
163class BnAudioPolicyService : public BnInterface<IAudioPolicyService>
164{
165public:
166    virtual status_t    onTransact( uint32_t code,
167                                    const Parcel& data,
168                                    Parcel* reply,
169                                    uint32_t flags = 0);
170};
171
172// ----------------------------------------------------------------------------
173
174}; // namespace android
175
176#endif // ANDROID_IAUDIOPOLICYSERVICE_H
177