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