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) = 0; 57 virtual status_t startOutput(audio_io_handle_t output, 58 audio_stream_type_t stream, 59 int session = 0) = 0; 60 virtual status_t stopOutput(audio_io_handle_t output, 61 audio_stream_type_t stream, 62 int session = 0) = 0; 63 virtual void releaseOutput(audio_io_handle_t output) = 0; 64 virtual audio_io_handle_t getInput(audio_source_t inputSource, 65 uint32_t samplingRate = 0, 66 audio_format_t format = AUDIO_FORMAT_DEFAULT, 67 audio_channel_mask_t channelMask = 0, 68 int audioSession = 0) = 0; 69 virtual status_t startInput(audio_io_handle_t input) = 0; 70 virtual status_t stopInput(audio_io_handle_t input) = 0; 71 virtual void releaseInput(audio_io_handle_t input) = 0; 72 virtual status_t initStreamVolume(audio_stream_type_t stream, 73 int indexMin, 74 int indexMax) = 0; 75 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 76 int index, 77 audio_devices_t device) = 0; 78 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 79 int *index, 80 audio_devices_t device) = 0; 81 virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0; 82 virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0; 83 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0; 84 virtual status_t registerEffect(const effect_descriptor_t *desc, 85 audio_io_handle_t io, 86 uint32_t strategy, 87 int session, 88 int id) = 0; 89 virtual status_t unregisterEffect(int id) = 0; 90 virtual status_t setEffectEnabled(int id, bool enabled) = 0; 91 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0; 92 virtual bool isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0) 93 const = 0; 94 virtual bool isSourceActive(audio_source_t source) const = 0; 95 virtual status_t queryDefaultPreProcessing(int audioSession, 96 effect_descriptor_t *descriptors, 97 uint32_t *count) = 0; 98 }; 99 100 101 // ---------------------------------------------------------------------------- 102 103 class BnAudioPolicyService : public BnInterface<IAudioPolicyService> 104 { 105 public: 106 virtual status_t onTransact( uint32_t code, 107 const Parcel& data, 108 Parcel* reply, 109 uint32_t flags = 0); 110 }; 111 112 // ---------------------------------------------------------------------------- 113 114 }; // namespace android 115 116 #endif // ANDROID_IAUDIOPOLICYSERVICE_H 117
