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