AudioSystem.h revision f6778fd0c72ab54328f0e9f5ecf0017b73e99dd8
189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project/* 289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * you may not use this file except in compliance with the License. 689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * You may obtain a copy of the License at 789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * 1089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 1189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 1289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * See the License for the specific language governing permissions and 1489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * limitations under the License. 1589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 1689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 1789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project#ifndef ANDROID_AUDIOSYSTEM_H_ 1889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project#define ANDROID_AUDIOSYSTEM_H_ 1989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 201ab85ec401801ef9a9184650d0f5a1639b45eeb9Glenn Kasten#include <hardware/audio_effect.h> 211ab85ec401801ef9a9184650d0f5a1639b45eeb9Glenn Kasten#include <media/IAudioFlingerClient.h> 22b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent#include <media/IAudioPolicyServiceClient.h> 2364760240f931714858a59c1579f07264d7182ba2Dima Zavin#include <system/audio.h> 247394a4f358fa9908a9f0a7c954b65c399f4268e6Dima Zavin#include <system/audio_policy.h> 251ab85ec401801ef9a9184650d0f5a1639b45eeb9Glenn Kasten#include <utils/Errors.h> 261ab85ec401801ef9a9184650d0f5a1639b45eeb9Glenn Kasten#include <utils/Mutex.h> 27db5cb14318bb24cd6ea14ff7ceea0d5e1f83d903Dima Zavin 2889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Projectnamespace android { 2989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 3089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Projecttypedef void (*audio_error_callback)(status_t err); 31c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 321ab85ec401801ef9a9184650d0f5a1639b45eeb9Glenn Kastenclass IAudioFlinger; 33c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurentclass IAudioPolicyService; 34c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurentclass String8; 3589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 3689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Projectclass AudioSystem 3789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project{ 3889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Projectpublic: 3989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 4089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project /* These are static methods to control the system-wide AudioFlinger 4189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project * only privileged processes can have access to them 4289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project */ 4389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 44c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // mute/unmute microphone 4589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static status_t muteMicrophone(bool state); 4689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static status_t isMicrophoneMuted(bool *state); 4789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 48c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // set/get master volume 4989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static status_t setMasterVolume(float value); 5089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static status_t getMasterVolume(float* volume); 514bcae82f9b07d1a39956c45a6f5bec0b696c4dd1Glenn Kasten 52c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // mute/unmute audio outputs 53c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent static status_t setMasterMute(bool mute); 5489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static status_t getMasterMute(bool* mute); 5589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 56c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // set/get stream volume on specified output 5772ef00de10fa95bfcb948ed88ab9b7a177ed0b48Glenn Kasten static status_t setStreamVolume(audio_stream_type_t stream, float value, 5872ef00de10fa95bfcb948ed88ab9b7a177ed0b48Glenn Kasten audio_io_handle_t output); 5972ef00de10fa95bfcb948ed88ab9b7a177ed0b48Glenn Kasten static status_t getStreamVolume(audio_stream_type_t stream, float* volume, 6072ef00de10fa95bfcb948ed88ab9b7a177ed0b48Glenn Kasten audio_io_handle_t output); 61c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 62c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // mute/unmute stream 63fff6d715a8db0daf08a50634f242c40268de3d49Glenn Kasten static status_t setStreamMute(audio_stream_type_t stream, bool mute); 64fff6d715a8db0daf08a50634f242c40268de3d49Glenn Kasten static status_t getStreamMute(audio_stream_type_t stream, bool* mute); 6589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 66f78aee70d15daf4690de7e7b4983ee68b0d1381dGlenn Kasten // set audio mode in audio hardware 67f78aee70d15daf4690de7e7b4983ee68b0d1381dGlenn Kasten static status_t setMode(audio_mode_t mode); 6889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 69272ab546940054ad7991bef4b3a36f15175721cdJean-Michel Trivi // returns true in *state if tracks are active on the specified stream or have been active 70eda6c364c253ba97ee45a3adeb8c2b45db1f81dbEric Laurent // in the past inPastMs milliseconds 716a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten static status_t isStreamActive(audio_stream_type_t stream, bool *state, uint32_t inPastMs); 72272ab546940054ad7991bef4b3a36f15175721cdJean-Michel Trivi // returns true in *state if tracks are active for what qualifies as remote playback 73272ab546940054ad7991bef4b3a36f15175721cdJean-Michel Trivi // on the specified stream or have been active in the past inPastMs milliseconds. Remote 74272ab546940054ad7991bef4b3a36f15175721cdJean-Michel Trivi // playback isn't mutually exclusive with local playback. 75272ab546940054ad7991bef4b3a36f15175721cdJean-Michel Trivi static status_t isStreamActiveRemotely(audio_stream_type_t stream, bool *state, 766a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten uint32_t inPastMs); 77d7086030fcf731e4bcef6c033cc6418cd04e6b91Jean-Michel Trivi // returns true in *state if a recorder is currently recording with the specified source 78d7086030fcf731e4bcef6c033cc6418cd04e6b91Jean-Michel Trivi static status_t isSourceActive(audio_source_t source, bool *state); 7989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 80c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // set/get audio hardware parameters. The function accepts a list of parameters 81c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // key value pairs in the form: key1=value1;key2=value2;... 82c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // Some keys are reserved for standard parameters (See AudioParameter class). 83c23885ebb142b9da31543789ecc3f7cf7111bc67Glenn Kasten // The versions with audio_io_handle_t are intended for internal media framework use only. 84c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent static status_t setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs); 85c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent static String8 getParameters(audio_io_handle_t ioHandle, const String8& keys); 86c23885ebb142b9da31543789ecc3f7cf7111bc67Glenn Kasten // The versions without audio_io_handle_t are intended for JNI. 87c23885ebb142b9da31543789ecc3f7cf7111bc67Glenn Kasten static status_t setParameters(const String8& keyValuePairs); 88c23885ebb142b9da31543789ecc3f7cf7111bc67Glenn Kasten static String8 getParameters(const String8& keys); 89c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 9089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static void setErrorCallback(audio_error_callback cb); 9189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 9289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project // helper function to obtain AudioFlinger service handle 9389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static const sp<IAudioFlinger>& get_audio_flinger(); 9489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 9589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static float linearToLog(int volume); 9689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static int logToLinear(float volume); 9789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 98f94006ca0f30c27868c284e553f57bf467ae92bcGlenn Kasten // Returned samplingRate and frameCount output values are guaranteed 99f94006ca0f30c27868c284e553f57bf467ae92bcGlenn Kasten // to be non-zero if status == NO_ERROR 1003b16c766d1ae2cfd8487e8ffb2b23936fc0a8e17Glenn Kasten static status_t getOutputSamplingRate(uint32_t* samplingRate, 1016a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten audio_stream_type_t stream); 102e33054eb968cbf8ccaee1b0ff0301403902deed6Glenn Kasten static status_t getOutputFrameCount(size_t* frameCount, 1036a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten audio_stream_type_t stream); 10485ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten static status_t getOutputLatency(uint32_t* latency, 1056a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten audio_stream_type_t stream); 1061a9ed11a472493cac7f6dfcbfac2064526a493edEric Laurent static status_t getSamplingRate(audio_io_handle_t output, 1073b16c766d1ae2cfd8487e8ffb2b23936fc0a8e17Glenn Kasten uint32_t* samplingRate); 1081a9ed11a472493cac7f6dfcbfac2064526a493edEric Laurent // returns the number of frames per audio HAL write buffer. Corresponds to 109665470b36f202bcc8ee2f7417f68fd2608dd07c1Eric Laurent // audio_stream->get_buffer_size()/audio_stream_out_frame_size() 1101a9ed11a472493cac7f6dfcbfac2064526a493edEric Laurent static status_t getFrameCount(audio_io_handle_t output, 111e33054eb968cbf8ccaee1b0ff0301403902deed6Glenn Kasten size_t* frameCount); 1121a9ed11a472493cac7f6dfcbfac2064526a493edEric Laurent // returns the audio output stream latency in ms. Corresponds to 1131a9ed11a472493cac7f6dfcbfac2064526a493edEric Laurent // audio_stream_out->get_latency() 1141a9ed11a472493cac7f6dfcbfac2064526a493edEric Laurent static status_t getLatency(audio_io_handle_t output, 1151a9ed11a472493cac7f6dfcbfac2064526a493edEric Laurent uint32_t* latency); 116c813985abd8ba61e999b3505f6a332574f87a1beAndreas Huber 117b42f318d9733f88c7eb9bedfd33b086b8ea5dff5Glenn Kasten // return status NO_ERROR implies *buffSize > 0 118dd8104cc5367262f0e5f13df4e79f131e8d560bbGlenn Kasten static status_t getInputBufferSize(uint32_t sampleRate, audio_format_t format, 119dd8104cc5367262f0e5f13df4e79f131e8d560bbGlenn Kasten audio_channel_mask_t channelMask, size_t* buffSize); 12089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 121f0ee6f4055e26fb35d9c526a596668a4dc9da5baEric Laurent static status_t setVoiceVolume(float volume); 122c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 123342e9cf388cceb807def720e40e8b0a217f4bcaaEric Laurent // return the number of audio frames written by AudioFlinger to audio HAL and 1240ed19594452c901c3c8665d06610fffe46895d06Glenn Kasten // audio dsp to DAC since the specified output I/O handle has exited standby. 125342e9cf388cceb807def720e40e8b0a217f4bcaaEric Laurent // returned status (from utils/Errors.h) can be: 126342e9cf388cceb807def720e40e8b0a217f4bcaaEric Laurent // - NO_ERROR: successful operation, halFrames and dspFrames point to valid data 127342e9cf388cceb807def720e40e8b0a217f4bcaaEric Laurent // - INVALID_OPERATION: Not supported on current hardware platform 128342e9cf388cceb807def720e40e8b0a217f4bcaaEric Laurent // - BAD_VALUE: invalid parameter 129342e9cf388cceb807def720e40e8b0a217f4bcaaEric Laurent // NOTE: this feature is not supported on all hardware platforms and it is 130342e9cf388cceb807def720e40e8b0a217f4bcaaEric Laurent // necessary to check returned status before using the returned values. 131ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald static status_t getRenderPosition(audio_io_handle_t output, 132377b2ec9a2885f9b6405b07ba900a9e3f4349c38Kévin PETIT uint32_t *halFrames, 1330ed19594452c901c3c8665d06610fffe46895d06Glenn Kasten uint32_t *dspFrames); 134342e9cf388cceb807def720e40e8b0a217f4bcaaEric Laurent 135bf04a5d7f287fc712e0ed91849dc85c90c1e182dGlenn Kasten // return the number of input frames lost by HAL implementation, or 0 if the handle is invalid 1365f972c031d4061f4f037c9fda1ea4bd9b6a756cdGlenn Kasten static uint32_t getInputFramesLost(audio_io_handle_t ioHandle); 137be916aa1267e2e6b1c148f51d11bcbbc79cb864cEric Laurent 138de3f8392fbf380ba6f09d009b00d7172477389a2Eric Laurent // Allocate a new unique ID for use as an audio session ID or I/O handle. 139de3f8392fbf380ba6f09d009b00d7172477389a2Eric Laurent // If unable to contact AudioFlinger, returns AUDIO_UNIQUE_ID_ALLOCATE instead. 140de3f8392fbf380ba6f09d009b00d7172477389a2Eric Laurent // FIXME If AudioFlinger were to ever exhaust the unique ID namespace, 141de3f8392fbf380ba6f09d009b00d7172477389a2Eric Laurent // this method could fail by returning either AUDIO_UNIQUE_ID_ALLOCATE 142de3f8392fbf380ba6f09d009b00d7172477389a2Eric Laurent // or an unspecified existing unique ID. 143de3f8392fbf380ba6f09d009b00d7172477389a2Eric Laurent static audio_unique_id_t newAudioUniqueId(); 14485d109a4b0eddd76a8c5cee170bc2bcc99d00118Glenn Kasten 145d457c970c8d08519cd77280a90b61ae1e342cfe3Marco Nelissen static void acquireAudioSessionId(int audioSession, pid_t pid); 146d457c970c8d08519cd77280a90b61ae1e342cfe3Marco Nelissen static void releaseAudioSessionId(int audioSession, pid_t pid); 147c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 14893c3d41bdb15e39dac0faea9c5b60f1637cd477cEric Laurent // Get the HW synchronization source used for an audio session. 14993c3d41bdb15e39dac0faea9c5b60f1637cd477cEric Laurent // Return a valid source or AUDIO_HW_SYNC_INVALID if an error occurs 15093c3d41bdb15e39dac0faea9c5b60f1637cd477cEric Laurent // or no HW sync source is used. 15193c3d41bdb15e39dac0faea9c5b60f1637cd477cEric Laurent static audio_hw_sync_t getAudioHwSyncForSession(audio_session_t sessionId); 15293c3d41bdb15e39dac0faea9c5b60f1637cd477cEric Laurent 153c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // types of io configuration change events received with ioConfigChanged() 154c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent enum io_config_event { 155c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent OUTPUT_OPENED, 156c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent OUTPUT_CLOSED, 157c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent OUTPUT_CONFIG_CHANGED, 158c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent INPUT_OPENED, 159c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent INPUT_CLOSED, 160c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent INPUT_CONFIG_CHANGED, 161c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent STREAM_CONFIG_CHANGED, 162c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent NUM_CONFIG_EVENTS 163c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent }; 164c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 16585ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // audio output descriptor used to cache output configurations in client process to avoid 16685ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // frequent calls through IAudioFlinger 167c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent class OutputDescriptor { 168c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent public: 169c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent OutputDescriptor() 1706d238e5ecb4c4266bc865a067072a30187e55f97Glenn Kasten : samplingRate(0), format(AUDIO_FORMAT_DEFAULT), channelMask(0), frameCount(0), latency(0) 1716d238e5ecb4c4266bc865a067072a30187e55f97Glenn Kasten {} 172c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 173c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent uint32_t samplingRate; 174eced2daaa6c91a3731eef978ce65c6ec319c5e6aGlenn Kasten audio_format_t format; 175fad226abd12435dbcd232f7de396f1a097b2bd5fGlenn Kasten audio_channel_mask_t channelMask; 176c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent size_t frameCount; 177c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent uint32_t latency; 178c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent }; 179c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 180a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent // Events used to synchronize actions between audio sessions. 18185ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // For instance SYNC_EVENT_PRESENTATION_COMPLETE can be used to delay recording start until 18285ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten // playback is complete on another audio session. 183a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent // See definitions in MediaSyncEvent.java 184a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent enum sync_event_t { 185a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent SYNC_EVENT_SAME = -1, // used internally to indicate restart with same event 186a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent SYNC_EVENT_NONE = 0, 187a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent SYNC_EVENT_PRESENTATION_COMPLETE, 188a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent 189a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent // 190a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent // Define new events here: SYNC_EVENT_START, SYNC_EVENT_STOP, SYNC_EVENT_TIME ... 191a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent // 192a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent SYNC_EVENT_CNT, 193a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent }; 194a011e35b22f95f558d81dc9c94b68b1465c4661dEric Laurent 1952986460984580833161bdaabc7f17da1005a8961Eric Laurent // Timeout for synchronous record start. Prevents from blocking the record thread forever 1962986460984580833161bdaabc7f17da1005a8961Eric Laurent // if the trigger event is not fired. 1972986460984580833161bdaabc7f17da1005a8961Eric Laurent static const uint32_t kSyncRecordStartTimeOutMs = 30000; 1982986460984580833161bdaabc7f17da1005a8961Eric Laurent 199c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // 200c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // IAudioPolicyService interface (see AudioPolicyInterface for method descriptions) 201c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // 20285ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten static status_t setDeviceConnectionState(audio_devices_t device, audio_policy_dev_state_t state, 20385ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten const char *device_address); 20485ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten static audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device, 20585ab62c4b433df3f1a9826bed1c9bec07a86c750Glenn Kasten const char *device_address); 206f78aee70d15daf4690de7e7b4983ee68b0d1381dGlenn Kasten static status_t setPhoneState(audio_mode_t state); 207fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin static status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config); 208fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin static audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage); 209d631d962a831de8b7614b14d7368eae60c816893Glenn Kasten 210d631d962a831de8b7614b14d7368eae60c816893Glenn Kasten // Client must successfully hand off the handle reference to AudioFlinger via createTrack(), 211d631d962a831de8b7614b14d7368eae60c816893Glenn Kasten // or release it with releaseOutput(). 212fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin static audio_io_handle_t getOutput(audio_stream_type_t stream, 213c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent uint32_t samplingRate = 0, 21458f30210ea540b6ce5aa6a46330cd3499483cb97Glenn Kasten audio_format_t format = AUDIO_FORMAT_DEFAULT, 215254af180475346b6186b49c297f340c9c4817511Glenn Kasten audio_channel_mask_t channelMask = AUDIO_CHANNEL_OUT_STEREO, 216ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 217ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald const audio_offload_info_t *offloadInfo = NULL); 2185bd3f38638acab633d181359cc9ec27b80f84d43Jean-Michel Trivi static audio_io_handle_t getOutputForAttr(const audio_attributes_t *attr, 2195bd3f38638acab633d181359cc9ec27b80f84d43Jean-Michel Trivi uint32_t samplingRate = 0, 2205bd3f38638acab633d181359cc9ec27b80f84d43Jean-Michel Trivi audio_format_t format = AUDIO_FORMAT_DEFAULT, 2215bd3f38638acab633d181359cc9ec27b80f84d43Jean-Michel Trivi audio_channel_mask_t channelMask = AUDIO_CHANNEL_OUT_STEREO, 2225bd3f38638acab633d181359cc9ec27b80f84d43Jean-Michel Trivi audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE, 2235bd3f38638acab633d181359cc9ec27b80f84d43Jean-Michel Trivi const audio_offload_info_t *offloadInfo = NULL); 224de070137f11d346fba77605bd76a44c040a618fcEric Laurent static status_t startOutput(audio_io_handle_t output, 225fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin audio_stream_type_t stream, 2266a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten int session); 227de070137f11d346fba77605bd76a44c040a618fcEric Laurent static status_t stopOutput(audio_io_handle_t output, 228fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin audio_stream_type_t stream, 2296a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten int session); 230c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent static void releaseOutput(audio_io_handle_t output); 231d631d962a831de8b7614b14d7368eae60c816893Glenn Kasten 232d631d962a831de8b7614b14d7368eae60c816893Glenn Kasten // Client must successfully hand off the handle reference to AudioFlinger via openRecord(), 233d631d962a831de8b7614b14d7368eae60c816893Glenn Kasten // or release it with releaseInput(). 234eba51fb3a361f67a6a64d5a16eba6084fe27d60eGlenn Kasten static audio_io_handle_t getInput(audio_source_t inputSource, 2356a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten uint32_t samplingRate, 2366a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten audio_format_t format, 2376a5e79733c760d7555aacec53c8bd21e8516c0a1Glenn Kasten audio_channel_mask_t channelMask, 238b3b1660ecb67f61f9da54efced8677fa3a6f4863Glenn Kasten int sessionId, 239b3b1660ecb67f61f9da54efced8677fa3a6f4863Glenn Kasten audio_input_flags_t); 240d631d962a831de8b7614b14d7368eae60c816893Glenn Kasten 2414dc680607181e6a76f4e91a39366c4f5dfb7b03eEric Laurent static status_t startInput(audio_io_handle_t input, 2424dc680607181e6a76f4e91a39366c4f5dfb7b03eEric Laurent audio_session_t session); 2434dc680607181e6a76f4e91a39366c4f5dfb7b03eEric Laurent static status_t stopInput(audio_io_handle_t input, 2444dc680607181e6a76f4e91a39366c4f5dfb7b03eEric Laurent audio_session_t session); 2454dc680607181e6a76f4e91a39366c4f5dfb7b03eEric Laurent static void releaseInput(audio_io_handle_t input, 2464dc680607181e6a76f4e91a39366c4f5dfb7b03eEric Laurent audio_session_t session); 247fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin static status_t initStreamVolume(audio_stream_type_t stream, 248c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent int indexMin, 249c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent int indexMax); 25083844cc2f95dc279015b47fd1e18c7cb4eabe9a1Eric Laurent static status_t setStreamVolumeIndex(audio_stream_type_t stream, 25183844cc2f95dc279015b47fd1e18c7cb4eabe9a1Eric Laurent int index, 25283844cc2f95dc279015b47fd1e18c7cb4eabe9a1Eric Laurent audio_devices_t device); 25383844cc2f95dc279015b47fd1e18c7cb4eabe9a1Eric Laurent static status_t getStreamVolumeIndex(audio_stream_type_t stream, 25483844cc2f95dc279015b47fd1e18c7cb4eabe9a1Eric Laurent int *index, 25583844cc2f95dc279015b47fd1e18c7cb4eabe9a1Eric Laurent audio_devices_t device); 256c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 257fce7a473248381cc83a01855f92581077d3c9ee2Dima Zavin static uint32_t getStrategyForStream(audio_stream_type_t stream); 2586374252107fd6539397598195ea6defd5870fafbEric Laurent static audio_devices_t getDevicesForStream(audio_stream_type_t stream); 259de070137f11d346fba77605bd76a44c040a618fcEric Laurent 26058e5aa34f01d663654d8bafad65db1dda42161ffGlenn Kasten static audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc); 26158e5aa34f01d663654d8bafad65db1dda42161ffGlenn Kasten static status_t registerEffect(const effect_descriptor_t *desc, 2627c7f10bd4fda9a084e5e7f0eb3a040dfcbf01745Eric Laurent audio_io_handle_t io, 263de070137f11d346fba77605bd76a44c040a618fcEric Laurent uint32_t strategy, 264de070137f11d346fba77605bd76a44c040a618fcEric Laurent int session, 265de070137f11d346fba77605bd76a44c040a618fcEric Laurent int id); 266de070137f11d346fba77605bd76a44c040a618fcEric Laurent static status_t unregisterEffect(int id); 267db7c079f284f6e91266f6653ae0ec198b1c5006eEric Laurent static status_t setEffectEnabled(int id, bool enabled); 268de070137f11d346fba77605bd76a44c040a618fcEric Laurent 2699f6530f53ae9eda43f4e7c1cb30d2379db00aa00Eric Laurent // clear stream to output mapping cache (gStreamOutputMap) 2709f6530f53ae9eda43f4e7c1cb30d2379db00aa00Eric Laurent // and output configuration cache (gOutputs) 2719f6530f53ae9eda43f4e7c1cb30d2379db00aa00Eric Laurent static void clearAudioConfigCache(); 2729f6530f53ae9eda43f4e7c1cb30d2379db00aa00Eric Laurent 273c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent static const sp<IAudioPolicyService>& get_audio_policy_service(); 274c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 275cc0f1cfb69ce8b8985fc2c0984847a06a13ad22dGlenn Kasten // helpers for android.media.AudioManager.getProperty(), see description there for meaning 2763b16c766d1ae2cfd8487e8ffb2b23936fc0a8e17Glenn Kasten static uint32_t getPrimaryOutputSamplingRate(); 277e33054eb968cbf8ccaee1b0ff0301403902deed6Glenn Kasten static size_t getPrimaryOutputFrameCount(); 278cc0f1cfb69ce8b8985fc2c0984847a06a13ad22dGlenn Kasten 2794182c4e2a07e2441fcd5c22eaff0ddfe7f826f61Glenn Kasten static status_t setLowRamDevice(bool isLowRamDevice); 2804182c4e2a07e2441fcd5c22eaff0ddfe7f826f61Glenn Kasten 281ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald // Check if hw offload is possible for given format, stream type, sample rate, 282ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald // bit rate, duration, video and streaming or offload property is enabled 283ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald static bool isOffloadSupported(const audio_offload_info_t& info); 284ad3af3305f024bcbbd55c894a4995e449498e1baRichard Fitzgerald 28546291616486979986cba3ab83e894728ef53063fEric Laurent // check presence of audio flinger service. 28646291616486979986cba3ab83e894728ef53063fEric Laurent // returns NO_ERROR if binding to service succeeds, DEAD_OBJECT otherwise 28746291616486979986cba3ab83e894728ef53063fEric Laurent static status_t checkAudioFlinger(); 288203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent 289203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent /* List available audio ports and their attributes */ 290203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent static status_t listAudioPorts(audio_port_role_t role, 291203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent audio_port_type_t type, 292203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent unsigned int *num_ports, 293203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent struct audio_port *ports, 294203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent unsigned int *generation); 295203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent 296203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent /* Get attributes for a given audio port */ 297203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent static status_t getAudioPort(struct audio_port *port); 298203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent 299203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent /* Create an audio patch between several source and sink ports */ 300203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent static status_t createAudioPatch(const struct audio_patch *patch, 301203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent audio_patch_handle_t *handle); 302203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent 303203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent /* Release an audio patch */ 304203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent static status_t releaseAudioPatch(audio_patch_handle_t handle); 305203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent 306203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent /* List existing audio patches */ 307203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent static status_t listAudioPatches(unsigned int *num_patches, 308203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent struct audio_patch *patches, 309203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent unsigned int *generation); 310203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent /* Set audio port configuration */ 311203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent static status_t setAudioPortConfig(const struct audio_port_config *config); 312203b1a18a806e2c56c701aac49cda963bccfad5bEric Laurent 313df3dc7e2fe6c639529b70e3f3a7d2bf0f4c6e871Eric Laurent 314df3dc7e2fe6c639529b70e3f3a7d2bf0f4c6e871Eric Laurent static status_t acquireSoundTriggerSession(audio_session_t *session, 315df3dc7e2fe6c639529b70e3f3a7d2bf0f4c6e871Eric Laurent audio_io_handle_t *ioHandle, 316df3dc7e2fe6c639529b70e3f3a7d2bf0f4c6e871Eric Laurent audio_devices_t *device); 317df3dc7e2fe6c639529b70e3f3a7d2bf0f4c6e871Eric Laurent static status_t releaseSoundTriggerSession(audio_session_t session); 318df3dc7e2fe6c639529b70e3f3a7d2bf0f4c6e871Eric Laurent 319bb6c9a05840d924b502ce0f1868fca4881ada1edEric Laurent static audio_mode_t getPhoneState(); 320bb6c9a05840d924b502ce0f1868fca4881ada1edEric Laurent 32189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project // ---------------------------------------------------------------------------- 32289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 323b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent class AudioPortCallback : public RefBase 324b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent { 325b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent public: 326b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent 327b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent AudioPortCallback() {} 328b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent virtual ~AudioPortCallback() {} 329b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent 330b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent virtual void onAudioPortListUpdate() = 0; 331b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent virtual void onAudioPatchListUpdate() = 0; 332b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent virtual void onServiceDied() = 0; 333b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent 334b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent }; 335b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent 336b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent static void setAudioPortCallback(sp<AudioPortCallback> callBack); 337b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent 33889fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Projectprivate: 33989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 34089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project class AudioFlingerClient: public IBinder::DeathRecipient, public BnAudioFlingerClient 34189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project { 34289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project public: 343c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent AudioFlingerClient() { 34489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project } 345c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 34689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project // DeathRecipient 34789fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project virtual void binderDied(const wp<IBinder>& who); 348c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 34989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project // IAudioFlingerClient 350c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 351c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // indicate a change in the configuration of an output or input: keeps the cached 352b81cc8c6f3eec9edb255ea99b6a6f243585b1e38Glenn Kasten // values for output/input parameters up-to-date in client process 353b81cc8c6f3eec9edb255ea99b6a6f243585b1e38Glenn Kasten virtual void ioConfigChanged(int event, audio_io_handle_t ioHandle, const void *param2); 35489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project }; 35589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 356b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent class AudioPolicyServiceClient: public IBinder::DeathRecipient, 357b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent public BnAudioPolicyServiceClient 358c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent { 359c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent public: 360c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent AudioPolicyServiceClient() { 361c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent } 36289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 363c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent // DeathRecipient 364c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent virtual void binderDied(const wp<IBinder>& who); 365b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent 366b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent // IAudioPolicyServiceClient 367b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent virtual void onAudioPortListUpdate(); 368b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent virtual void onAudioPatchListUpdate(); 369c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent }; 370c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 371c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent static sp<AudioFlingerClient> gAudioFlingerClient; 372c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent static sp<AudioPolicyServiceClient> gAudioPolicyServiceClient; 37389fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project friend class AudioFlingerClient; 374c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent friend class AudioPolicyServiceClient; 37589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 376f6778fd0c72ab54328f0e9f5ecf0017b73e99dd8Eric Laurent static Mutex gLock; // protects gAudioFlinger and gAudioErrorCallback, 377f6778fd0c72ab54328f0e9f5ecf0017b73e99dd8Eric Laurent static Mutex gLockCache; // protects gOutputs, gPrevInSamplingRate, gPrevInFormat, 378f6778fd0c72ab54328f0e9f5ecf0017b73e99dd8Eric Laurent // gPrevInChannelMask and gInBuffSize 379f6778fd0c72ab54328f0e9f5ecf0017b73e99dd8Eric Laurent static Mutex gLockAPS; // protects gAudioPolicyService and gAudioPolicyServiceClient 380f6778fd0c72ab54328f0e9f5ecf0017b73e99dd8Eric Laurent static Mutex gLockAPC; // protects gAudioPortCallback 38189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static sp<IAudioFlinger> gAudioFlinger; 38289fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static audio_error_callback gAudioErrorCallback; 383c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 38489fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static size_t gInBuffSize; 38589fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project // previous parameters for recording buffer size queries 38689fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project static uint32_t gPrevInSamplingRate; 38758f30210ea540b6ce5aa6a46330cd3499483cb97Glenn Kasten static audio_format_t gPrevInFormat; 388dd8104cc5367262f0e5f13df4e79f131e8d560bbGlenn Kasten static audio_channel_mask_t gPrevInChannelMask; 38989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 390c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent static sp<IAudioPolicyService> gAudioPolicyService; 391c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 3929f6530f53ae9eda43f4e7c1cb30d2379db00aa00Eric Laurent // list of output descriptors containing cached parameters 3939f6530f53ae9eda43f4e7c1cb30d2379db00aa00Eric Laurent // (sampling rate, framecount, channel count...) 394c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent static DefaultKeyedVector<audio_io_handle_t, OutputDescriptor *> gOutputs; 395b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent 396b52c152d553556b2d227ffc943489de0c60b4b02Eric Laurent static sp<AudioPortCallback> gAudioPortCallback; 397c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent}; 398c2f1f07084818942352c6bbfb36af9b6b330eb4eEric Laurent 39989fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project}; // namespace android 40089fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project 40189fa4ad53f2f4d57adbc97ae1149fc00c9b6f3c5The Android Open Source Project#endif /*ANDROID_AUDIOSYSTEM_H_*/ 402