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/IAudioPolicyServiceClient.h> 29 30 #include <system/audio_policy.h> 31 32 namespace android { 33 34 // ---------------------------------------------------------------------------- 35 36 class IAudioPolicyService : public IInterface 37 { 38 public: 39 DECLARE_META_INTERFACE(AudioPolicyService); 40 41 // 42 // IAudioPolicyService interface (see AudioPolicyInterface for method descriptions) 43 // 44 virtual status_t setDeviceConnectionState(audio_devices_t device, 45 audio_policy_dev_state_t state, 46 const char *device_address) = 0; 47 virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device, 48 const char *device_address) = 0; 49 virtual status_t setPhoneState(audio_mode_t state) = 0; 50 virtual status_t setForceUse(audio_policy_force_use_t usage, 51 audio_policy_forced_cfg_t config) = 0; 52 virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) = 0; 53 virtual audio_io_handle_t getOutput(audio_stream_type_t stream, 54 uint32_t samplingRate = 0, 55 audio_format_t format = AUDIO_FORMAT_DEFAULT, 56 audio_channel_mask_t channelMask = 0, 57 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 58 const audio_offload_info_t *offloadInfo = NULL) = 0; 59 virtual audio_io_handle_t getOutputForAttr(const audio_attributes_t *attr, 60 uint32_t samplingRate = 0, 61 audio_format_t format = AUDIO_FORMAT_DEFAULT, 62 audio_channel_mask_t channelMask = 0, 63 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 64 const audio_offload_info_t *offloadInfo = NULL) = 0; 65 virtual status_t startOutput(audio_io_handle_t output, 66 audio_stream_type_t stream, 67 int session = 0) = 0; 68 virtual status_t stopOutput(audio_io_handle_t output, 69 audio_stream_type_t stream, 70 int session = 0) = 0; 71 virtual void releaseOutput(audio_io_handle_t output) = 0; 72 virtual audio_io_handle_t getInput(audio_source_t inputSource, 73 uint32_t samplingRate, 74 audio_format_t format, 75 audio_channel_mask_t channelMask, 76 int audioSession, 77 audio_input_flags_t flags) = 0; 78 virtual status_t startInput(audio_io_handle_t input, 79 audio_session_t session) = 0; 80 virtual status_t stopInput(audio_io_handle_t input, 81 audio_session_t session) = 0; 82 virtual void releaseInput(audio_io_handle_t input, 83 audio_session_t session) = 0; 84 virtual status_t initStreamVolume(audio_stream_type_t stream, 85 int indexMin, 86 int indexMax) = 0; 87 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 88 int index, 89 audio_devices_t device) = 0; 90 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 91 int *index, 92 audio_devices_t device) = 0; 93 virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0; 94 virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0; 95 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0; 96 virtual status_t registerEffect(const effect_descriptor_t *desc, 97 audio_io_handle_t io, 98 uint32_t strategy, 99 int session, 100 int id) = 0; 101 virtual status_t unregisterEffect(int id) = 0; 102 virtual status_t setEffectEnabled(int id, bool enabled) = 0; 103 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0; 104 virtual bool isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0) 105 const = 0; 106 virtual bool isSourceActive(audio_source_t source) const = 0; 107 virtual status_t queryDefaultPreProcessing(int audioSession, 108 effect_descriptor_t *descriptors, 109 uint32_t *count) = 0; 110 // Check if offload is possible for given format, stream type, sample rate, 111 // bit rate, duration, video and streaming or offload property is enabled 112 virtual bool isOffloadSupported(const audio_offload_info_t& info) = 0; 113 114 /* List available audio ports and their attributes */ 115 virtual status_t listAudioPorts(audio_port_role_t role, 116 audio_port_type_t type, 117 unsigned int *num_ports, 118 struct audio_port *ports, 119 unsigned int *generation) = 0; 120 121 /* Get attributes for a given audio port */ 122 virtual status_t getAudioPort(struct audio_port *port) = 0; 123 124 /* Create an audio patch between several source and sink ports */ 125 virtual status_t createAudioPatch(const struct audio_patch *patch, 126 audio_patch_handle_t *handle) = 0; 127 128 /* Release an audio patch */ 129 virtual status_t releaseAudioPatch(audio_patch_handle_t handle) = 0; 130 131 /* List existing audio patches */ 132 virtual status_t listAudioPatches(unsigned int *num_patches, 133 struct audio_patch *patches, 134 unsigned int *generation) = 0; 135 /* Set audio port configuration */ 136 virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0; 137 138 virtual void registerClient(const sp<IAudioPolicyServiceClient>& client) = 0; 139 140 virtual status_t acquireSoundTriggerSession(audio_session_t *session, 141 audio_io_handle_t *ioHandle, 142 audio_devices_t *device) = 0; 143 144 virtual status_t releaseSoundTriggerSession(audio_session_t session) = 0; 145 146 virtual audio_mode_t getPhoneState() = 0; 147 }; 148 149 150 // ---------------------------------------------------------------------------- 151 152 class BnAudioPolicyService : public BnInterface<IAudioPolicyService> 153 { 154 public: 155 virtual status_t onTransact( uint32_t code, 156 const Parcel& data, 157 Parcel* reply, 158 uint32_t flags = 0); 159 }; 160 161 // ---------------------------------------------------------------------------- 162 163 }; // namespace android 164 165 #endif // ANDROID_IAUDIOPOLICYSERVICE_H 166
