IAudioPolicyService.h revision e9ebcdbb0580bd4a75f4530b957b1859e535c028 
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 handleDeviceConfigChange(audio_devices_t device,
52                                              const char *device_address,
53                                              const char *device_name) = 0;
54    virtual status_t setPhoneState(audio_mode_t state) = 0;
55    virtual status_t setForceUse(audio_policy_force_use_t usage,
56                                    audio_policy_forced_cfg_t config) = 0;
57    virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) = 0;
58    virtual audio_io_handle_t getOutput(audio_stream_type_t stream) = 0;
59    virtual status_t getOutputForAttr(const audio_attributes_t *attr,
60                                      audio_io_handle_t *output,
61                                      audio_session_t session,
62                                      audio_stream_type_t *stream,
63                                      pid_t pid,
64                                      uid_t uid,
65                                      const audio_config_t *config,
66                                      audio_output_flags_t flags,
67                                      audio_port_handle_t *selectedDeviceId,
68                                      audio_port_handle_t *portId) = 0;
69    virtual status_t startOutput(audio_io_handle_t output,
70                                 audio_stream_type_t stream,
71                                 audio_session_t session) = 0;
72    virtual status_t stopOutput(audio_io_handle_t output,
73                                audio_stream_type_t stream,
74                                audio_session_t session) = 0;
75    virtual void releaseOutput(audio_io_handle_t output,
76                               audio_stream_type_t stream,
77                               audio_session_t session) = 0;
78    virtual status_t  getInputForAttr(const audio_attributes_t *attr,
79                              audio_io_handle_t *input,
80                              audio_session_t session,
81                              pid_t pid,
82                              uid_t uid,
83                              const audio_config_base_t *config,
84                              audio_input_flags_t flags,
85                              audio_port_handle_t *selectedDeviceId,
86                              audio_port_handle_t *portId) = 0;
87    virtual status_t startInput(audio_io_handle_t input,
88                                audio_session_t session,
89                                audio_devices_t device,
90                                uid_t uid,
91                                bool *silenced) = 0;
92    virtual status_t stopInput(audio_io_handle_t input,
93                               audio_session_t session) = 0;
94    virtual void releaseInput(audio_io_handle_t input,
95                              audio_session_t session) = 0;
96    virtual status_t initStreamVolume(audio_stream_type_t stream,
97                                      int indexMin,
98                                      int indexMax) = 0;
99    virtual status_t setStreamVolumeIndex(audio_stream_type_t stream,
100                                          int index,
101                                          audio_devices_t device) = 0;
102    virtual status_t getStreamVolumeIndex(audio_stream_type_t stream,
103                                          int *index,
104                                          audio_devices_t device) = 0;
105    virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0;
106    virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0;
107    virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0;
108    virtual status_t registerEffect(const effect_descriptor_t *desc,
109                                    audio_io_handle_t io,
110                                    uint32_t strategy,
111                                    audio_session_t session,
112                                    int id) = 0;
113    virtual status_t unregisterEffect(int id) = 0;
114    virtual status_t setEffectEnabled(int id, bool enabled) = 0;
115    virtual bool     isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0;
116    virtual bool     isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0)
117                             const = 0;
118    virtual bool     isSourceActive(audio_source_t source) const = 0;
119    virtual status_t queryDefaultPreProcessing(audio_session_t audioSession,
120                                              effect_descriptor_t *descriptors,
121                                              uint32_t *count) = 0;
122   // Check if offload is possible for given format, stream type, sample rate,
123    // bit rate, duration, video and streaming or offload property is enabled
124    virtual bool isOffloadSupported(const audio_offload_info_t& info) = 0;
125
126    /* List available audio ports and their attributes */
127    virtual status_t listAudioPorts(audio_port_role_t role,
128                                    audio_port_type_t type,
129                                    unsigned int *num_ports,
130                                    struct audio_port *ports,
131                                    unsigned int *generation) = 0;
132
133    /* Get attributes for a given audio port */
134    virtual status_t getAudioPort(struct audio_port *port) = 0;
135
136    /* Create an audio patch between several source and sink ports */
137    virtual status_t createAudioPatch(const struct audio_patch *patch,
138                                       audio_patch_handle_t *handle) = 0;
139
140    /* Release an audio patch */
141    virtual status_t releaseAudioPatch(audio_patch_handle_t handle) = 0;
142
143    /* List existing audio patches */
144    virtual status_t listAudioPatches(unsigned int *num_patches,
145                                      struct audio_patch *patches,
146                                      unsigned int *generation) = 0;
147    /* Set audio port configuration */
148    virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0;
149
150    virtual void registerClient(const sp<IAudioPolicyServiceClient>& client) = 0;
151
152    virtual void setAudioPortCallbacksEnabled(bool enabled) = 0;
153
154    virtual status_t acquireSoundTriggerSession(audio_session_t *session,
155                                           audio_io_handle_t *ioHandle,
156                                           audio_devices_t *device) = 0;
157
158    virtual status_t releaseSoundTriggerSession(audio_session_t session) = 0;
159
160    virtual audio_mode_t getPhoneState() = 0;
161
162    virtual status_t registerPolicyMixes(const Vector<AudioMix>& mixes, bool registration) = 0;
163
164    virtual status_t startAudioSource(const struct audio_port_config *source,
165                                      const audio_attributes_t *attributes,
166                                      audio_patch_handle_t *handle) = 0;
167    virtual status_t stopAudioSource(audio_patch_handle_t handle) = 0;
168
169    virtual status_t setMasterMono(bool mono) = 0;
170    virtual status_t getMasterMono(bool *mono) = 0;
171    virtual float    getStreamVolumeDB(
172            audio_stream_type_t stream, int index, audio_devices_t device) = 0;
173};
174
175
176// ----------------------------------------------------------------------------
177
178class BnAudioPolicyService : public BnInterface<IAudioPolicyService>
179{
180public:
181    virtual status_t    onTransact( uint32_t code,
182                                    const Parcel& data,
183                                    Parcel* reply,
184                                    uint32_t flags = 0);
185private:
186    void sanetizeAudioAttributes(audio_attributes_t* attr);
187};
188
189// ----------------------------------------------------------------------------
190
191}; // namespace android
192
193#endif // ANDROID_IAUDIOPOLICYSERVICE_H
194