IAudioPolicyService.h revision b52c152d553556b2d227ffc943489de0c60b4b02
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 32namespace android { 33 34// ---------------------------------------------------------------------------- 35 36class IAudioPolicyService : public IInterface 37{ 38public: 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 status_t startOutput(audio_io_handle_t output, 60 audio_stream_type_t stream, 61 int session = 0) = 0; 62 virtual status_t stopOutput(audio_io_handle_t output, 63 audio_stream_type_t stream, 64 int session = 0) = 0; 65 virtual void releaseOutput(audio_io_handle_t output) = 0; 66 virtual audio_io_handle_t getInput(audio_source_t inputSource, 67 uint32_t samplingRate = 0, 68 audio_format_t format = AUDIO_FORMAT_DEFAULT, 69 audio_channel_mask_t channelMask = 0, 70 int audioSession = 0) = 0; 71 virtual status_t startInput(audio_io_handle_t input) = 0; 72 virtual status_t stopInput(audio_io_handle_t input) = 0; 73 virtual void releaseInput(audio_io_handle_t input) = 0; 74 virtual status_t initStreamVolume(audio_stream_type_t stream, 75 int indexMin, 76 int indexMax) = 0; 77 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 78 int index, 79 audio_devices_t device) = 0; 80 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 81 int *index, 82 audio_devices_t device) = 0; 83 virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0; 84 virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0; 85 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0; 86 virtual status_t registerEffect(const effect_descriptor_t *desc, 87 audio_io_handle_t io, 88 uint32_t strategy, 89 int session, 90 int id) = 0; 91 virtual status_t unregisterEffect(int id) = 0; 92 virtual status_t setEffectEnabled(int id, bool enabled) = 0; 93 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0; 94 virtual bool isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0) 95 const = 0; 96 virtual bool isSourceActive(audio_source_t source) const = 0; 97 virtual status_t queryDefaultPreProcessing(int audioSession, 98 effect_descriptor_t *descriptors, 99 uint32_t *count) = 0; 100 // Check if offload is possible for given format, stream type, sample rate, 101 // bit rate, duration, video and streaming or offload property is enabled 102 virtual bool isOffloadSupported(const audio_offload_info_t& info) = 0; 103 104 /* List available audio ports and their attributes */ 105 virtual status_t listAudioPorts(audio_port_role_t role, 106 audio_port_type_t type, 107 unsigned int *num_ports, 108 struct audio_port *ports, 109 unsigned int *generation) = 0; 110 111 /* Get attributes for a given audio port */ 112 virtual status_t getAudioPort(struct audio_port *port) = 0; 113 114 /* Create an audio patch between several source and sink ports */ 115 virtual status_t createAudioPatch(const struct audio_patch *patch, 116 audio_patch_handle_t *handle) = 0; 117 118 /* Release an audio patch */ 119 virtual status_t releaseAudioPatch(audio_patch_handle_t handle) = 0; 120 121 /* List existing audio patches */ 122 virtual status_t listAudioPatches(unsigned int *num_patches, 123 struct audio_patch *patches, 124 unsigned int *generation) = 0; 125 /* Set audio port configuration */ 126 virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0; 127 128 virtual void registerClient(const sp<IAudioPolicyServiceClient>& client) = 0; 129}; 130 131 132// ---------------------------------------------------------------------------- 133 134class BnAudioPolicyService : public BnInterface<IAudioPolicyService> 135{ 136public: 137 virtual status_t onTransact( uint32_t code, 138 const Parcel& data, 139 Parcel* reply, 140 uint32_t flags = 0); 141}; 142 143// ---------------------------------------------------------------------------- 144 145}; // namespace android 146 147#endif // ANDROID_IAUDIOPOLICYSERVICE_H 148