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, audio_policy_forced_cfg_t config) = 0; 50 virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) = 0; 51 virtual audio_io_handle_t getOutput(audio_stream_type_t stream, 52 uint32_t samplingRate = 0, 53 audio_format_t format = AUDIO_FORMAT_DEFAULT, 54 audio_channel_mask_t channelMask = 0, 55 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE) = 0; 56 virtual status_t startOutput(audio_io_handle_t output, 57 audio_stream_type_t stream, 58 int session = 0) = 0; 59 virtual status_t stopOutput(audio_io_handle_t output, 60 audio_stream_type_t stream, 61 int session = 0) = 0; 62 virtual void releaseOutput(audio_io_handle_t output) = 0; 63 virtual audio_io_handle_t getInput(audio_source_t inputSource, 64 uint32_t samplingRate = 0, 65 audio_format_t format = AUDIO_FORMAT_DEFAULT, 66 audio_channel_mask_t channelMask = 0, 67 int audioSession = 0) = 0; 68 virtual status_t startInput(audio_io_handle_t input) = 0; 69 virtual status_t stopInput(audio_io_handle_t input) = 0; 70 virtual void releaseInput(audio_io_handle_t input) = 0; 71 virtual status_t initStreamVolume(audio_stream_type_t stream, 72 int indexMin, 73 int indexMax) = 0; 74 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 75 int index, 76 audio_devices_t device) = 0; 77 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 78 int *index, 79 audio_devices_t device) = 0; 80 virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0; 81 virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream) = 0; 82 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc) = 0; 83 virtual status_t registerEffect(const effect_descriptor_t *desc, 84 audio_io_handle_t io, 85 uint32_t strategy, 86 int session, 87 int id) = 0; 88 virtual status_t unregisterEffect(int id) = 0; 89 virtual status_t setEffectEnabled(int id, bool enabled) = 0; 90 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const = 0; 91 virtual bool isSourceActive(audio_source_t source) const = 0; 92 virtual status_t queryDefaultPreProcessing(int audioSession, 93 effect_descriptor_t *descriptors, 94 uint32_t *count) = 0; 95 }; 96 97 98 // ---------------------------------------------------------------------------- 99 100 class BnAudioPolicyService : public BnInterface<IAudioPolicyService> 101 { 102 public: 103 virtual status_t onTransact( uint32_t code, 104 const Parcel& data, 105 Parcel* reply, 106 uint32_t flags = 0); 107 }; 108 109 // ---------------------------------------------------------------------------- 110 111 }; // namespace android 112 113 #endif // ANDROID_IAUDIOPOLICYSERVICE_H 114