AudioSystem.cpp revision 342e9cf388cceb807def720e40e8b0a217f4bcaa
11b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber/* 21b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * Copyright (C) 2006-2007 The Android Open Source Project 31b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * 41b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 51b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * you may not use this file except in compliance with the License. 61b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * You may obtain a copy of the License at 71b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * 81b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 91b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * 101b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * Unless required by applicable law or agreed to in writing, software 111b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 121b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * See the License for the specific language governing permissions and 141b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber * limitations under the License. 151b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber */ 161b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 171b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber#define LOG_TAG "AudioSystem" 181b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber//#define LOG_NDEBUG 0 191b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 201b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber#include <utils/Log.h> 211b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber#include <binder/IServiceManager.h> 221b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber#include <media/AudioSystem.h> 231b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber#include <media/IAudioPolicyService.h> 241b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber#include <math.h> 251b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 261b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber// ---------------------------------------------------------------------------- 271b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber// the sim build doesn't have gettid 281b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 291b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber#ifndef HAVE_GETTID 301b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber# define gettid getpid 311b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber#endif 321b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 331b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber// ---------------------------------------------------------------------------- 341b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 351b19c9d120869c3182373a9b06a1ed98898df882Andreas Hubernamespace android { 361b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 371b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber// client singleton for AudioFlinger binder interface 381b19c9d120869c3182373a9b06a1ed98898df882Andreas HuberMutex AudioSystem::gLock; 39efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Hubersp<IAudioFlinger> AudioSystem::gAudioFlinger; 40efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Hubersp<AudioSystem::AudioFlingerClient> AudioSystem::gAudioFlingerClient; 41efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huberaudio_error_callback AudioSystem::gAudioErrorCallback = NULL; 421b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber// Cached values 431b19c9d120869c3182373a9b06a1ed98898df882Andreas HuberDefaultKeyedVector<int, audio_io_handle_t> AudioSystem::gStreamOutputMap(0); 441b19c9d120869c3182373a9b06a1ed98898df882Andreas HuberDefaultKeyedVector<audio_io_handle_t, AudioSystem::OutputDescriptor *> AudioSystem::gOutputs(0); 451b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 461b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber// Cached values for recording queries 47efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huberuint32_t AudioSystem::gPrevInSamplingRate = 16000; 48efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huberint AudioSystem::gPrevInFormat = AudioSystem::PCM_16_BIT; 491b19c9d120869c3182373a9b06a1ed98898df882Andreas Huberint AudioSystem::gPrevInChannelCount = 1; 501b19c9d120869c3182373a9b06a1ed98898df882Andreas Hubersize_t AudioSystem::gInBuffSize = 0; 511b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 521b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 531b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber// establish binder interface to AudioFlinger service 54ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huberconst sp<IAudioFlinger>& AudioSystem::get_audio_flinger() 55ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber{ 561b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber Mutex::Autolock _l(gLock); 571b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber if (gAudioFlinger.get() == 0) { 581b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber sp<IServiceManager> sm = defaultServiceManager(); 591b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber sp<IBinder> binder; 601b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber do { 611b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber binder = sm->getService(String16("media.audio_flinger")); 621b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber if (binder != 0) 631b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber break; 641b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber LOGW("AudioFlinger not published, waiting..."); 651b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber usleep(500000); // 0.5 s 661b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber } while(true); 671b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber if (gAudioFlingerClient == NULL) { 68ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber gAudioFlingerClient = new AudioFlingerClient(); 69ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber } else { 701b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber if (gAudioErrorCallback) { 711b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber gAudioErrorCallback(NO_ERROR); 721b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber } 731b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber } 741b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber binder->linkToDeath(gAudioFlingerClient); 751b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber gAudioFlinger = interface_cast<IAudioFlinger>(binder); 761b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber gAudioFlinger->registerClient(gAudioFlingerClient); 771b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber } 781b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber LOGE_IF(gAudioFlinger==0, "no AudioFlinger!?"); 791b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 80ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber return gAudioFlinger; 81ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber} 821b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 831b19c9d120869c3182373a9b06a1ed98898df882Andreas Huberstatus_t AudioSystem::muteMicrophone(bool state) { 841b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 851b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber if (af == 0) return PERMISSION_DENIED; 861b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber return af->setMicMute(state); 871b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber} 881b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 891b19c9d120869c3182373a9b06a1ed98898df882Andreas Huberstatus_t AudioSystem::isMicrophoneMuted(bool* state) { 90ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 91ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber if (af == 0) return PERMISSION_DENIED; 921b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber *state = af->getMicMute(); 931b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber return NO_ERROR; 941b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber} 951b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 961b19c9d120869c3182373a9b06a1ed98898df882Andreas Huberstatus_t AudioSystem::setMasterVolume(float value) 971b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber{ 981b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 991b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber if (af == 0) return PERMISSION_DENIED; 1001b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber af->setMasterVolume(value); 1011b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber return NO_ERROR; 102ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber} 103ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber 1041b19c9d120869c3182373a9b06a1ed98898df882Andreas Huberstatus_t AudioSystem::setMasterMute(bool mute) 1051b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber{ 1061b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 1071b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber if (af == 0) return PERMISSION_DENIED; 1081b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber af->setMasterMute(mute); 1091b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber return NO_ERROR; 1101b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber} 1111b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 1121b19c9d120869c3182373a9b06a1ed98898df882Andreas Huberstatus_t AudioSystem::getMasterVolume(float* volume) 113efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber{ 114efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 115efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber if (af == 0) return PERMISSION_DENIED; 116efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber *volume = af->masterVolume(); 117efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber return NO_ERROR; 118efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber} 119ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huber 120ef7d3793fa9bbfb25253626ede9a020ee9280a17Andreas Huberstatus_t AudioSystem::getMasterMute(bool* mute) 121efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber{ 122efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 123efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber if (af == 0) return PERMISSION_DENIED; 124efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber *mute = af->masterMute(); 125efbb781c15abf8e085f5ab8d39710bd58ea0b6e4Andreas Huber return NO_ERROR; 1261b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber} 1271b19c9d120869c3182373a9b06a1ed98898df882Andreas Huber 128status_t AudioSystem::setStreamVolume(int stream, float value, int output) 129{ 130 if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE; 131 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 132 if (af == 0) return PERMISSION_DENIED; 133 af->setStreamVolume(stream, value, output); 134 return NO_ERROR; 135} 136 137status_t AudioSystem::setStreamMute(int stream, bool mute) 138{ 139 if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE; 140 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 141 if (af == 0) return PERMISSION_DENIED; 142 af->setStreamMute(stream, mute); 143 return NO_ERROR; 144} 145 146status_t AudioSystem::getStreamVolume(int stream, float* volume, int output) 147{ 148 if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE; 149 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 150 if (af == 0) return PERMISSION_DENIED; 151 *volume = af->streamVolume(stream, output); 152 return NO_ERROR; 153} 154 155status_t AudioSystem::getStreamMute(int stream, bool* mute) 156{ 157 if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE; 158 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 159 if (af == 0) return PERMISSION_DENIED; 160 *mute = af->streamMute(stream); 161 return NO_ERROR; 162} 163 164status_t AudioSystem::setMode(int mode) 165{ 166 if (mode >= NUM_MODES) return BAD_VALUE; 167 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 168 if (af == 0) return PERMISSION_DENIED; 169 return af->setMode(mode); 170} 171 172 173status_t AudioSystem::isStreamActive(int stream, bool* state) { 174 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 175 if (af == 0) return PERMISSION_DENIED; 176 *state = af->isStreamActive(stream); 177 return NO_ERROR; 178} 179 180 181status_t AudioSystem::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs) { 182 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 183 if (af == 0) return PERMISSION_DENIED; 184 return af->setParameters(ioHandle, keyValuePairs); 185} 186 187String8 AudioSystem::getParameters(audio_io_handle_t ioHandle, const String8& keys) { 188 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 189 String8 result = String8(""); 190 if (af == 0) return result; 191 192 result = af->getParameters(ioHandle, keys); 193 return result; 194} 195 196// convert volume steps to natural log scale 197 198// change this value to change volume scaling 199static const float dBPerStep = 0.5f; 200// shouldn't need to touch these 201static const float dBConvert = -dBPerStep * 2.302585093f / 20.0f; 202static const float dBConvertInverse = 1.0f / dBConvert; 203 204float AudioSystem::linearToLog(int volume) 205{ 206 // float v = volume ? exp(float(100 - volume) * dBConvert) : 0; 207 // LOGD("linearToLog(%d)=%f", volume, v); 208 // return v; 209 return volume ? exp(float(100 - volume) * dBConvert) : 0; 210} 211 212int AudioSystem::logToLinear(float volume) 213{ 214 // int v = volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 215 // LOGD("logTolinear(%d)=%f", v, volume); 216 // return v; 217 return volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 218} 219 220status_t AudioSystem::getOutputSamplingRate(int* samplingRate, int streamType) 221{ 222 OutputDescriptor *outputDesc; 223 audio_io_handle_t output; 224 225 if (streamType == DEFAULT) { 226 streamType = MUSIC; 227 } 228 229 output = getOutput((stream_type)streamType); 230 if (output == 0) { 231 return PERMISSION_DENIED; 232 } 233 234 gLock.lock(); 235 outputDesc = AudioSystem::gOutputs.valueFor(output); 236 if (outputDesc == 0) { 237 LOGV("getOutputSamplingRate() no output descriptor for output %d in gOutputs", output); 238 gLock.unlock(); 239 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 240 if (af == 0) return PERMISSION_DENIED; 241 *samplingRate = af->sampleRate(output); 242 } else { 243 LOGV("getOutputSamplingRate() reading from output desc"); 244 *samplingRate = outputDesc->samplingRate; 245 gLock.unlock(); 246 } 247 248 LOGV("getOutputSamplingRate() streamType %d, output %d, sampling rate %d", streamType, output, *samplingRate); 249 250 return NO_ERROR; 251} 252 253status_t AudioSystem::getOutputFrameCount(int* frameCount, int streamType) 254{ 255 OutputDescriptor *outputDesc; 256 audio_io_handle_t output; 257 258 if (streamType == DEFAULT) { 259 streamType = MUSIC; 260 } 261 262 output = getOutput((stream_type)streamType); 263 if (output == 0) { 264 return PERMISSION_DENIED; 265 } 266 267 gLock.lock(); 268 outputDesc = AudioSystem::gOutputs.valueFor(output); 269 if (outputDesc == 0) { 270 gLock.unlock(); 271 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 272 if (af == 0) return PERMISSION_DENIED; 273 *frameCount = af->frameCount(output); 274 } else { 275 *frameCount = outputDesc->frameCount; 276 gLock.unlock(); 277 } 278 279 LOGV("getOutputFrameCount() streamType %d, output %d, frameCount %d", streamType, output, *frameCount); 280 281 return NO_ERROR; 282} 283 284status_t AudioSystem::getOutputLatency(uint32_t* latency, int streamType) 285{ 286 OutputDescriptor *outputDesc; 287 audio_io_handle_t output; 288 289 if (streamType == DEFAULT) { 290 streamType = MUSIC; 291 } 292 293 output = getOutput((stream_type)streamType); 294 if (output == 0) { 295 return PERMISSION_DENIED; 296 } 297 298 gLock.lock(); 299 outputDesc = AudioSystem::gOutputs.valueFor(output); 300 if (outputDesc == 0) { 301 gLock.unlock(); 302 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 303 if (af == 0) return PERMISSION_DENIED; 304 *latency = af->latency(output); 305 } else { 306 *latency = outputDesc->latency; 307 gLock.unlock(); 308 } 309 310 LOGV("getOutputLatency() streamType %d, output %d, latency %d", streamType, output, *latency); 311 312 return NO_ERROR; 313} 314 315status_t AudioSystem::getInputBufferSize(uint32_t sampleRate, int format, int channelCount, 316 size_t* buffSize) 317{ 318 // Do we have a stale gInBufferSize or are we requesting the input buffer size for new values 319 if ((gInBuffSize == 0) || (sampleRate != gPrevInSamplingRate) || (format != gPrevInFormat) 320 || (channelCount != gPrevInChannelCount)) { 321 // save the request params 322 gPrevInSamplingRate = sampleRate; 323 gPrevInFormat = format; 324 gPrevInChannelCount = channelCount; 325 326 gInBuffSize = 0; 327 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 328 if (af == 0) { 329 return PERMISSION_DENIED; 330 } 331 gInBuffSize = af->getInputBufferSize(sampleRate, format, channelCount); 332 } 333 *buffSize = gInBuffSize; 334 335 return NO_ERROR; 336} 337 338status_t AudioSystem::setVoiceVolume(float value) 339{ 340 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 341 if (af == 0) return PERMISSION_DENIED; 342 return af->setVoiceVolume(value); 343} 344 345status_t AudioSystem::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int stream) 346{ 347 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 348 if (af == 0) return PERMISSION_DENIED; 349 350 if (stream == DEFAULT) { 351 stream = MUSIC; 352 } 353 354 return af->getRenderPosition(halFrames, dspFrames, getOutput((stream_type)stream)); 355} 356 357// --------------------------------------------------------------------------- 358 359void AudioSystem::AudioFlingerClient::binderDied(const wp<IBinder>& who) { 360 Mutex::Autolock _l(AudioSystem::gLock); 361 362 AudioSystem::gAudioFlinger.clear(); 363 // clear output handles and stream to output map caches 364 AudioSystem::gStreamOutputMap.clear(); 365 AudioSystem::gOutputs.clear(); 366 367 if (gAudioErrorCallback) { 368 gAudioErrorCallback(DEAD_OBJECT); 369 } 370 LOGW("AudioFlinger server died!"); 371} 372 373void AudioSystem::AudioFlingerClient::ioConfigChanged(int event, int ioHandle, void *param2) { 374 LOGV("ioConfigChanged() event %d", event); 375 OutputDescriptor *desc; 376 uint32_t stream; 377 378 if (ioHandle == 0) return; 379 380 Mutex::Autolock _l(AudioSystem::gLock); 381 382 switch (event) { 383 case STREAM_CONFIG_CHANGED: 384 if (param2 == 0) break; 385 stream = *(uint32_t *)param2; 386 LOGV("ioConfigChanged() STREAM_CONFIG_CHANGED stream %d, output %d", stream, ioHandle); 387 if (gStreamOutputMap.indexOfKey(stream) >= 0) { 388 gStreamOutputMap.replaceValueFor(stream, ioHandle); 389 } 390 break; 391 case OUTPUT_OPENED: { 392 if (gOutputs.indexOfKey(ioHandle) >= 0) { 393 LOGV("ioConfigChanged() opening already existing output! %d", ioHandle); 394 break; 395 } 396 if (param2 == 0) break; 397 desc = (OutputDescriptor *)param2; 398 399 OutputDescriptor *outputDesc = new OutputDescriptor(*desc); 400 gOutputs.add(ioHandle, outputDesc); 401 LOGV("ioConfigChanged() new output samplingRate %d, format %d channels %d frameCount %d latency %d", 402 outputDesc->samplingRate, outputDesc->format, outputDesc->channels, outputDesc->frameCount, outputDesc->latency); 403 } break; 404 case OUTPUT_CLOSED: { 405 if (gOutputs.indexOfKey(ioHandle) < 0) { 406 LOGW("ioConfigChanged() closing unknow output! %d", ioHandle); 407 break; 408 } 409 LOGV("ioConfigChanged() output %d closed", ioHandle); 410 411 gOutputs.removeItem(ioHandle); 412 for (int i = gStreamOutputMap.size() - 1; i >= 0 ; i--) { 413 if (gStreamOutputMap.valueAt(i) == ioHandle) { 414 gStreamOutputMap.removeItemsAt(i); 415 } 416 } 417 } break; 418 419 case OUTPUT_CONFIG_CHANGED: { 420 int index = gOutputs.indexOfKey(ioHandle); 421 if (index < 0) { 422 LOGW("ioConfigChanged() modifying unknow output! %d", ioHandle); 423 break; 424 } 425 if (param2 == 0) break; 426 desc = (OutputDescriptor *)param2; 427 428 LOGV("ioConfigChanged() new config for output %d samplingRate %d, format %d channels %d frameCount %d latency %d", 429 ioHandle, desc->samplingRate, desc->format, 430 desc->channels, desc->frameCount, desc->latency); 431 OutputDescriptor *outputDesc = gOutputs.valueAt(index); 432 delete outputDesc; 433 outputDesc = new OutputDescriptor(*desc); 434 gOutputs.replaceValueFor(ioHandle, outputDesc); 435 } break; 436 case INPUT_OPENED: 437 case INPUT_CLOSED: 438 case INPUT_CONFIG_CHANGED: 439 break; 440 441 } 442} 443 444void AudioSystem::setErrorCallback(audio_error_callback cb) { 445 Mutex::Autolock _l(gLock); 446 gAudioErrorCallback = cb; 447} 448 449bool AudioSystem::routedToA2dpOutput(int streamType) { 450 switch(streamType) { 451 case MUSIC: 452 case VOICE_CALL: 453 case BLUETOOTH_SCO: 454 case SYSTEM: 455 return true; 456 default: 457 return false; 458 } 459} 460 461 462// client singleton for AudioPolicyService binder interface 463sp<IAudioPolicyService> AudioSystem::gAudioPolicyService; 464sp<AudioSystem::AudioPolicyServiceClient> AudioSystem::gAudioPolicyServiceClient; 465 466 467// establish binder interface to AudioFlinger service 468const sp<IAudioPolicyService>& AudioSystem::get_audio_policy_service() 469{ 470 gLock.lock(); 471 if (gAudioPolicyService.get() == 0) { 472 sp<IServiceManager> sm = defaultServiceManager(); 473 sp<IBinder> binder; 474 do { 475 binder = sm->getService(String16("media.audio_policy")); 476 if (binder != 0) 477 break; 478 LOGW("AudioPolicyService not published, waiting..."); 479 usleep(500000); // 0.5 s 480 } while(true); 481 if (gAudioPolicyServiceClient == NULL) { 482 gAudioPolicyServiceClient = new AudioPolicyServiceClient(); 483 } 484 binder->linkToDeath(gAudioPolicyServiceClient); 485 gAudioPolicyService = interface_cast<IAudioPolicyService>(binder); 486 gLock.unlock(); 487 } else { 488 gLock.unlock(); 489 } 490 return gAudioPolicyService; 491} 492 493status_t AudioSystem::setDeviceConnectionState(audio_devices device, 494 device_connection_state state, 495 const char *device_address) 496{ 497 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 498 if (aps == 0) return PERMISSION_DENIED; 499 500 return aps->setDeviceConnectionState(device, state, device_address); 501} 502 503AudioSystem::device_connection_state AudioSystem::getDeviceConnectionState(audio_devices device, 504 const char *device_address) 505{ 506 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 507 if (aps == 0) return DEVICE_STATE_UNAVAILABLE; 508 509 return aps->getDeviceConnectionState(device, device_address); 510} 511 512status_t AudioSystem::setPhoneState(int state) 513{ 514 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 515 if (aps == 0) return PERMISSION_DENIED; 516 517 return aps->setPhoneState(state); 518} 519 520status_t AudioSystem::setRingerMode(uint32_t mode, uint32_t mask) 521{ 522 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 523 if (aps == 0) return PERMISSION_DENIED; 524 return aps->setRingerMode(mode, mask); 525} 526 527status_t AudioSystem::setForceUse(force_use usage, forced_config config) 528{ 529 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 530 if (aps == 0) return PERMISSION_DENIED; 531 return aps->setForceUse(usage, config); 532} 533 534AudioSystem::forced_config AudioSystem::getForceUse(force_use usage) 535{ 536 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 537 if (aps == 0) return FORCE_NONE; 538 return aps->getForceUse(usage); 539} 540 541 542audio_io_handle_t AudioSystem::getOutput(stream_type stream, 543 uint32_t samplingRate, 544 uint32_t format, 545 uint32_t channels, 546 output_flags flags) 547{ 548 audio_io_handle_t output = 0; 549 if ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) == 0) { 550 Mutex::Autolock _l(gLock); 551 output = AudioSystem::gStreamOutputMap.valueFor(stream); 552 LOGV_IF((output != 0), "getOutput() read %d from cache for stream %d", output, stream); 553 } 554 if (output == 0) { 555 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 556 if (aps == 0) return 0; 557 output = aps->getOutput(stream, samplingRate, format, channels, flags); 558 if ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) == 0) { 559 Mutex::Autolock _l(gLock); 560 AudioSystem::gStreamOutputMap.add(stream, output); 561 } 562 } 563 return output; 564} 565 566status_t AudioSystem::startOutput(audio_io_handle_t output, AudioSystem::stream_type stream) 567{ 568 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 569 if (aps == 0) return PERMISSION_DENIED; 570 return aps->startOutput(output, stream); 571} 572 573status_t AudioSystem::stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream) 574{ 575 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 576 if (aps == 0) return PERMISSION_DENIED; 577 return aps->stopOutput(output, stream); 578} 579 580void AudioSystem::releaseOutput(audio_io_handle_t output) 581{ 582 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 583 if (aps == 0) return; 584 aps->releaseOutput(output); 585} 586 587audio_io_handle_t AudioSystem::getInput(int inputSource, 588 uint32_t samplingRate, 589 uint32_t format, 590 uint32_t channels, 591 audio_in_acoustics acoustics) 592{ 593 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 594 if (aps == 0) return 0; 595 return aps->getInput(inputSource, samplingRate, format, channels, acoustics); 596} 597 598status_t AudioSystem::startInput(audio_io_handle_t input) 599{ 600 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 601 if (aps == 0) return PERMISSION_DENIED; 602 return aps->startInput(input); 603} 604 605status_t AudioSystem::stopInput(audio_io_handle_t input) 606{ 607 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 608 if (aps == 0) return PERMISSION_DENIED; 609 return aps->stopInput(input); 610} 611 612void AudioSystem::releaseInput(audio_io_handle_t input) 613{ 614 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 615 if (aps == 0) return; 616 aps->releaseInput(input); 617} 618 619status_t AudioSystem::initStreamVolume(stream_type stream, 620 int indexMin, 621 int indexMax) 622{ 623 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 624 if (aps == 0) return PERMISSION_DENIED; 625 return aps->initStreamVolume(stream, indexMin, indexMax); 626} 627 628status_t AudioSystem::setStreamVolumeIndex(stream_type stream, int index) 629{ 630 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 631 if (aps == 0) return PERMISSION_DENIED; 632 return aps->setStreamVolumeIndex(stream, index); 633} 634 635status_t AudioSystem::getStreamVolumeIndex(stream_type stream, int *index) 636{ 637 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 638 if (aps == 0) return PERMISSION_DENIED; 639 return aps->getStreamVolumeIndex(stream, index); 640} 641 642// --------------------------------------------------------------------------- 643 644void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who) { 645 Mutex::Autolock _l(AudioSystem::gLock); 646 AudioSystem::gAudioPolicyService.clear(); 647 648 LOGW("AudioPolicyService server died!"); 649} 650 651// --------------------------------------------------------------------------- 652 653 654// use emulated popcount optimization 655// http://www.df.lth.se/~john_e/gems/gem002d.html 656uint32_t AudioSystem::popCount(uint32_t u) 657{ 658 u = ((u&0x55555555) + ((u>>1)&0x55555555)); 659 u = ((u&0x33333333) + ((u>>2)&0x33333333)); 660 u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f)); 661 u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff)); 662 u = ( u&0x0000ffff) + (u>>16); 663 return u; 664} 665 666bool AudioSystem::isOutputDevice(audio_devices device) 667{ 668 if ((popCount(device) == 1 ) && 669 ((device & ~AudioSystem::DEVICE_OUT_ALL) == 0)) { 670 return true; 671 } else { 672 return false; 673 } 674} 675 676bool AudioSystem::isInputDevice(audio_devices device) 677{ 678 if ((popCount(device) == 1 ) && 679 ((device & ~AudioSystem::DEVICE_IN_ALL) == 0)) { 680 return true; 681 } else { 682 return false; 683 } 684} 685 686bool AudioSystem::isA2dpDevice(audio_devices device) 687{ 688 if ((popCount(device) == 1 ) && 689 (device & (AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP | 690 AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | 691 AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER))) { 692 return true; 693 } else { 694 return false; 695 } 696} 697 698bool AudioSystem::isBluetoothScoDevice(audio_devices device) 699{ 700 if ((popCount(device) == 1 ) && 701 (device & (AudioSystem::DEVICE_OUT_BLUETOOTH_SCO | 702 AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET | 703 AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT))) { 704 return true; 705 } else { 706 return false; 707 } 708} 709 710bool AudioSystem::isLowVisibility(stream_type stream) 711{ 712 if (stream == AudioSystem::SYSTEM || stream == AudioSystem::NOTIFICATION) { 713 return true; 714 } else { 715 return false; 716 } 717} 718 719bool AudioSystem::isInputChannel(uint32_t channel) 720{ 721 if ((channel & ~AudioSystem::CHANNEL_IN_ALL) == 0) { 722 return true; 723 } else { 724 return false; 725 } 726} 727 728bool AudioSystem::isOutputChannel(uint32_t channel) 729{ 730 if ((channel & ~AudioSystem::CHANNEL_OUT_ALL) == 0) { 731 return true; 732 } else { 733 return false; 734 } 735} 736 737bool AudioSystem::isValidFormat(uint32_t format) 738{ 739 switch (format & MAIN_FORMAT_MASK) { 740 case PCM: 741 case MP3: 742 case AMR_NB: 743 case AMR_WB: 744 case AAC: 745 case HE_AAC_V1: 746 case HE_AAC_V2: 747 case VORBIS: 748 return true; 749 default: 750 return false; 751 } 752} 753 754bool AudioSystem::isLinearPCM(uint32_t format) 755{ 756 switch (format) { 757 case PCM_16_BIT: 758 case PCM_8_BIT: 759 return true; 760 default: 761 return false; 762 } 763} 764 765//------------------------- AudioParameter class implementation --------------- 766 767const char *AudioParameter::keyRouting = "routing"; 768const char *AudioParameter::keySamplingRate = "sampling_rate"; 769const char *AudioParameter::keyFormat = "format"; 770const char *AudioParameter::keyChannels = "channels"; 771const char *AudioParameter::keyFrameCount = "frame_count"; 772 773AudioParameter::AudioParameter(const String8& keyValuePairs) 774{ 775 char *str = new char[keyValuePairs.length()+1]; 776 mKeyValuePairs = keyValuePairs; 777 778 strcpy(str, keyValuePairs.string()); 779 char *pair = strtok(str, ";"); 780 while (pair != NULL) { 781 if (strlen(pair) != 0) { 782 size_t eqIdx = strcspn(pair, "="); 783 String8 key = String8(pair, eqIdx); 784 String8 value; 785 if (eqIdx == strlen(pair)) { 786 value = String8(""); 787 } else { 788 value = String8(pair + eqIdx + 1); 789 } 790 if (mParameters.indexOfKey(key) < 0) { 791 mParameters.add(key, value); 792 } else { 793 mParameters.replaceValueFor(key, value); 794 } 795 } else { 796 LOGV("AudioParameter() cstor empty key value pair"); 797 } 798 pair = strtok(NULL, ";"); 799 } 800 801 delete[] str; 802} 803 804AudioParameter::~AudioParameter() 805{ 806 mParameters.clear(); 807} 808 809String8 AudioParameter::toString() 810{ 811 String8 str = String8(""); 812 813 size_t size = mParameters.size(); 814 for (size_t i = 0; i < size; i++) { 815 str += mParameters.keyAt(i); 816 str += "="; 817 str += mParameters.valueAt(i); 818 if (i < (size - 1)) str += ";"; 819 } 820 return str; 821} 822 823status_t AudioParameter::add(const String8& key, const String8& value) 824{ 825 if (mParameters.indexOfKey(key) < 0) { 826 mParameters.add(key, value); 827 return NO_ERROR; 828 } else { 829 mParameters.replaceValueFor(key, value); 830 return ALREADY_EXISTS; 831 } 832} 833 834status_t AudioParameter::addInt(const String8& key, const int value) 835{ 836 char str[12]; 837 if (snprintf(str, 12, "%d", value) > 0) { 838 String8 str8 = String8(str); 839 return add(key, str8); 840 } else { 841 return BAD_VALUE; 842 } 843} 844 845status_t AudioParameter::addFloat(const String8& key, const float value) 846{ 847 char str[23]; 848 if (snprintf(str, 23, "%.10f", value) > 0) { 849 String8 str8 = String8(str); 850 return add(key, str8); 851 } else { 852 return BAD_VALUE; 853 } 854} 855 856status_t AudioParameter::remove(const String8& key) 857{ 858 if (mParameters.indexOfKey(key) >= 0) { 859 mParameters.removeItem(key); 860 return NO_ERROR; 861 } else { 862 return BAD_VALUE; 863 } 864} 865 866status_t AudioParameter::get(const String8& key, String8& value) 867{ 868 if (mParameters.indexOfKey(key) >= 0) { 869 value = mParameters.valueFor(key); 870 return NO_ERROR; 871 } else { 872 return BAD_VALUE; 873 } 874} 875 876status_t AudioParameter::getInt(const String8& key, int& value) 877{ 878 String8 str8; 879 status_t result = get(key, str8); 880 value = 0; 881 if (result == NO_ERROR) { 882 int val; 883 if (sscanf(str8.string(), "%d", &val) == 1) { 884 value = val; 885 } else { 886 result = INVALID_OPERATION; 887 } 888 } 889 return result; 890} 891 892status_t AudioParameter::getFloat(const String8& key, float& value) 893{ 894 String8 str8; 895 status_t result = get(key, str8); 896 value = 0; 897 if (result == NO_ERROR) { 898 float val; 899 if (sscanf(str8.string(), "%f", &val) == 1) { 900 value = val; 901 } else { 902 result = INVALID_OPERATION; 903 } 904 } 905 return result; 906} 907 908status_t AudioParameter::getAt(size_t index, String8& key, String8& value) 909{ 910 if (mParameters.size() > index) { 911 key = mParameters.keyAt(index); 912 value = mParameters.valueAt(index); 913 return NO_ERROR; 914 } else { 915 return BAD_VALUE; 916 } 917} 918}; // namespace android 919 920