IAudioPolicyService.h revision f4ddfefc8ba59a8486d91826154cc9447821409e 
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                                      uid_t uid,
64                                      const audio_config_t *config,
65                                      audio_output_flags_t flags,
66                                      audio_port_handle_t *selectedDeviceId,
67                                      audio_port_handle_t *portId) = 0;
68    virtual status_t startOutput(audio_io_handle_t output,
69                                 audio_stream_type_t stream,
70                                 audio_session_t session) = 0;
71    virtual status_t stopOutput(audio_io_handle_t output,
72                                audio_stream_type_t stream,
73                                audio_session_t session) = 0;
74    virtual void releaseOutput(audio_io_handle_t output,
75                               audio_stream_type_t stream,
76                               audio_session_t session) = 0;
77    virtual status_t  getInputForAttr(const audio_attributes_t *attr,
78                              audio_io_handle_t *input,
79                              audio_session_t session,
80                              pid_t pid,
81                              uid_t uid,
82                              const audio_config_base_t *config,
83                              audio_input_flags_t flags,
84                              audio_port_handle_t *selectedDeviceId,
85                              audio_port_handle_t *portId) = 0;
86    virtual status_t startInput(audio_io_handle_t input,
87                                audio_session_t session,
88                                audio_devices_t device,
89                                uid_t uid,
90                                bool *silenced) = 0;
91    virtual status_t stopInput(audio_io_handle_t input,
92                               audio_session_t session) = 0;
93    virtual void releaseInput(audio_io_handle_t input,
94                              audio_session_t session) = 0;
95    virtual status_t initStreamVolume(audio_stream_type_t stream,
96                                      int indexMin,
97                                      int indexMax) = 0;
98    virtual status_t setStreamVolumeIndex(audio_stream_type_t stream,
99                                          int index,
100                                          audio_devices_t device) = 0;
101    virtual status_t getStreamVolumeIndex(audio_stream_type_t stream,
102                                          int *index,
103                                          audio_devices_t device) = 0;
104    virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0;
105    virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0;
106    virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0;
107    virtual status_t registerEffect(const effect_descriptor_t *desc,
108                                    audio_io_handle_t io,
109                                    uint32_t strategy,
110                                    audio_session_t session,
111                                    int id) = 0;
112    virtual status_t unregisterEffect(int id) = 0;
113    virtual status_t setEffectEnabled(int id, bool enabled) = 0;
114    virtual bool     isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0;
115    virtual bool     isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0)
116                             const = 0;
117    virtual bool     isSourceActive(audio_source_t source) const = 0;
118    virtual status_t queryDefaultPreProcessing(audio_session_t audioSession,
119                                              effect_descriptor_t *descriptors,
120                                              uint32_t *count) = 0;
121   // Check if offload is possible for given format, stream type, sample rate,
122    // bit rate, duration, video and streaming or offload property is enabled
123    virtual bool isOffloadSupported(const audio_offload_info_t& info) = 0;
124
125    /* List available audio ports and their attributes */
126    virtual status_t listAudioPorts(audio_port_role_t role,
127                                    audio_port_type_t type,
128                                    unsigned int *num_ports,
129                                    struct audio_port *ports,
130                                    unsigned int *generation) = 0;
131
132    /* Get attributes for a given audio port */
133    virtual status_t getAudioPort(struct audio_port *port) = 0;
134
135    /* Create an audio patch between several source and sink ports */
136    virtual status_t createAudioPatch(const struct audio_patch *patch,
137                                       audio_patch_handle_t *handle) = 0;
138
139    /* Release an audio patch */
140    virtual status_t releaseAudioPatch(audio_patch_handle_t handle) = 0;
141
142    /* List existing audio patches */
143    virtual status_t listAudioPatches(unsigned int *num_patches,
144                                      struct audio_patch *patches,
145                                      unsigned int *generation) = 0;
146    /* Set audio port configuration */
147    virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0;
148
149    virtual void registerClient(const sp<IAudioPolicyServiceClient>& client) = 0;
150
151    virtual void setAudioPortCallbacksEnabled(bool enabled) = 0;
152
153    virtual status_t acquireSoundTriggerSession(audio_session_t *session,
154                                           audio_io_handle_t *ioHandle,
155                                           audio_devices_t *device) = 0;
156
157    virtual status_t releaseSoundTriggerSession(audio_session_t session) = 0;
158
159    virtual audio_mode_t getPhoneState() = 0;
160
161    virtual status_t registerPolicyMixes(const Vector<AudioMix>& mixes, bool registration) = 0;
162
163    virtual status_t startAudioSource(const struct audio_port_config *source,
164                                      const audio_attributes_t *attributes,
165                                      audio_patch_handle_t *handle) = 0;
166    virtual status_t stopAudioSource(audio_patch_handle_t handle) = 0;
167
168    virtual status_t setMasterMono(bool mono) = 0;
169    virtual status_t getMasterMono(bool *mono) = 0;
170    virtual float    getStreamVolumeDB(
171            audio_stream_type_t stream, int index, audio_devices_t device) = 0;
172};
173
174
175// ----------------------------------------------------------------------------
176
177class BnAudioPolicyService : public BnInterface<IAudioPolicyService>
178{
179public:
180    virtual status_t    onTransact( uint32_t code,
181                                    const Parcel& data,
182                                    Parcel* reply,
183                                    uint32_t flags = 0);
184private:
185    void sanetizeAudioAttributes(audio_attributes_t* attr);
186};
187
188// ----------------------------------------------------------------------------
189
190}; // namespace android
191
192#endif // ANDROID_IAUDIOPOLICYSERVICE_H
193