IAudioPolicyService.h revision 466dc8ed6ca6b7f585104806c48613dd34e608c9 
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,
87                              audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE) = 0;
88    virtual status_t startInput(audio_io_handle_t input,
89                                audio_session_t session) = 0;
90    virtual status_t stopInput(audio_io_handle_t input,
91                               audio_session_t session) = 0;
92    virtual void releaseInput(audio_io_handle_t input,
93                              audio_session_t session) = 0;
94    virtual status_t initStreamVolume(audio_stream_type_t stream,
95                                      int indexMin,
96                                      int indexMax) = 0;
97    virtual status_t setStreamVolumeIndex(audio_stream_type_t stream,
98                                          int index,
99                                          audio_devices_t device) = 0;
100    virtual status_t getStreamVolumeIndex(audio_stream_type_t stream,
101                                          int *index,
102                                          audio_devices_t device) = 0;
103    virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0;
104    virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0;
105    virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0;
106    virtual status_t registerEffect(const effect_descriptor_t *desc,
107                                    audio_io_handle_t io,
108                                    uint32_t strategy,
109                                    int session,
110                                    int id) = 0;
111    virtual status_t unregisterEffect(int id) = 0;
112    virtual status_t setEffectEnabled(int id, bool enabled) = 0;
113    virtual bool     isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0;
114    virtual bool     isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0)
115                             const = 0;
116    virtual bool     isSourceActive(audio_source_t source) const = 0;
117    virtual status_t queryDefaultPreProcessing(int audioSession,
118                                              effect_descriptor_t *descriptors,
119                                              uint32_t *count) = 0;
120   // Check if offload is possible for given format, stream type, sample rate,
121    // bit rate, duration, video and streaming or offload property is enabled
122    virtual bool isOffloadSupported(const audio_offload_info_t& info) = 0;
123
124    /* List available audio ports and their attributes */
125    virtual status_t listAudioPorts(audio_port_role_t role,
126                                    audio_port_type_t type,
127                                    unsigned int *num_ports,
128                                    struct audio_port *ports,
129                                    unsigned int *generation) = 0;
130
131    /* Get attributes for a given audio port */
132    virtual status_t getAudioPort(struct audio_port *port) = 0;
133
134    /* Create an audio patch between several source and sink ports */
135    virtual status_t createAudioPatch(const struct audio_patch *patch,
136                                       audio_patch_handle_t *handle) = 0;
137
138    /* Release an audio patch */
139    virtual status_t releaseAudioPatch(audio_patch_handle_t handle) = 0;
140
141    /* List existing audio patches */
142    virtual status_t listAudioPatches(unsigned int *num_patches,
143                                      struct audio_patch *patches,
144                                      unsigned int *generation) = 0;
145    /* Set audio port configuration */
146    virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0;
147
148    virtual void registerClient(const sp<IAudioPolicyServiceClient>& client) = 0;
149
150    virtual status_t acquireSoundTriggerSession(audio_session_t *session,
151                                           audio_io_handle_t *ioHandle,
152                                           audio_devices_t *device) = 0;
153
154    virtual status_t releaseSoundTriggerSession(audio_session_t session) = 0;
155
156    virtual audio_mode_t getPhoneState() = 0;
157
158    virtual status_t registerPolicyMixes(Vector<AudioMix> mixes, bool registration) = 0;
159
160    virtual status_t startAudioSource(const struct audio_port_config *source,
161                                      const audio_attributes_t *attributes,
162                                      audio_io_handle_t *handle) = 0;
163    virtual status_t stopAudioSource(audio_io_handle_t handle) = 0;
164};
165
166
167// ----------------------------------------------------------------------------
168
169class BnAudioPolicyService : public BnInterface<IAudioPolicyService>
170{
171public:
172    virtual status_t    onTransact( uint32_t code,
173                                    const Parcel& data,
174                                    Parcel* reply,
175                                    uint32_t flags = 0);
176};
177
178// ----------------------------------------------------------------------------
179
180}; // namespace android
181
182#endif // ANDROID_IAUDIOPOLICYSERVICE_H
183