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 29 #include <system/audio_policy.h> 30 31 namespace android { 32 33 // ---------------------------------------------------------------------------- 34 35 class IAudioPolicyService : public IInterface 36 { 37 public: 38 DECLARE_META_INTERFACE(AudioPolicyService); 39 40 // 41 // IAudioPolicyService interface (see AudioPolicyInterface for method descriptions) 42 // 43 virtual status_t setDeviceConnectionState(audio_devices_t device, 44 audio_policy_dev_state_t state, 45 const char *device_address) = 0; 46 virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device, 47 const char *device_address) = 0; 48 virtual status_t setPhoneState(audio_mode_t state) = 0; 49 virtual status_t setForceUse(audio_policy_force_use_t usage, 50 audio_policy_forced_cfg_t config) = 0; 51 virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) = 0; 52 virtual audio_io_handle_t getOutput(audio_stream_type_t stream, 53 uint32_t samplingRate = 0, 54 audio_format_t format = AUDIO_FORMAT_DEFAULT, 55 audio_channel_mask_t channelMask = 0, 56 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 57 const audio_offload_info_t *offloadInfo = NULL) = 0; 58 virtual status_t startOutput(audio_io_handle_t output, 59 audio_stream_type_t stream, 60 int session = 0) = 0; 61 virtual status_t stopOutput(audio_io_handle_t output, 62 audio_stream_type_t stream, 63 int session = 0) = 0; 64 virtual void releaseOutput(audio_io_handle_t output) = 0; 65 virtual audio_io_handle_t getInput(audio_source_t inputSource, 66 uint32_t samplingRate = 0, 67 audio_format_t format = AUDIO_FORMAT_DEFAULT, 68 audio_channel_mask_t channelMask = 0, 69 int audioSession = 0) = 0; 70 virtual status_t startInput(audio_io_handle_t input) = 0; 71 virtual status_t stopInput(audio_io_handle_t input) = 0; 72 virtual void releaseInput(audio_io_handle_t input) = 0; 73 virtual status_t initStreamVolume(audio_stream_type_t stream, 74 int indexMin, 75 int indexMax) = 0; 76 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 77 int index, 78 audio_devices_t device) = 0; 79 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 80 int *index, 81 audio_devices_t device) = 0; 82 virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0; 83 virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0; 84 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0; 85 virtual status_t registerEffect(const effect_descriptor_t *desc, 86 audio_io_handle_t io, 87 uint32_t strategy, 88 int session, 89 int id) = 0; 90 virtual status_t unregisterEffect(int id) = 0; 91 virtual status_t setEffectEnabled(int id, bool enabled) = 0; 92 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0; 93 virtual bool isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0) 94 const = 0; 95 virtual bool isSourceActive(audio_source_t source) const = 0; 96 virtual status_t queryDefaultPreProcessing(int audioSession, 97 effect_descriptor_t *descriptors, 98 uint32_t *count) = 0; 99 // Check if offload is possible for given format, stream type, sample rate, 100 // bit rate, duration, video and streaming or offload property is enabled 101 virtual bool isOffloadSupported(const audio_offload_info_t& info) = 0; 102 }; 103 104 105 // ---------------------------------------------------------------------------- 106 107 class BnAudioPolicyService : public BnInterface<IAudioPolicyService> 108 { 109 public: 110 virtual status_t onTransact( uint32_t code, 111 const Parcel& data, 112 Parcel* reply, 113 uint32_t flags = 0); 114 }; 115 116 // ---------------------------------------------------------------------------- 117 118 }; // namespace android 119 120 #endif // ANDROID_IAUDIOPOLICYSERVICE_H 121