AudioFlinger.h revision 389cfdbb9a92a438a0d7710321c2964c7ad55eca
1/* 2** 3** Copyright 2007, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18#ifndef ANDROID_AUDIO_FLINGER_H 19#define ANDROID_AUDIO_FLINGER_H 20 21#include "Configuration.h" 22#include <stdint.h> 23#include <sys/types.h> 24#include <limits.h> 25 26#include <common_time/cc_helper.h> 27 28#include <cutils/compiler.h> 29 30#include <media/IAudioFlinger.h> 31#include <media/IAudioFlingerClient.h> 32#include <media/IAudioTrack.h> 33#include <media/IAudioRecord.h> 34#include <media/AudioSystem.h> 35#include <media/AudioTrack.h> 36 37#include <utils/Atomic.h> 38#include <utils/Errors.h> 39#include <utils/threads.h> 40#include <utils/SortedVector.h> 41#include <utils/TypeHelpers.h> 42#include <utils/Vector.h> 43 44#include <binder/BinderService.h> 45#include <binder/MemoryDealer.h> 46 47#include <system/audio.h> 48#include <hardware/audio.h> 49#include <hardware/audio_policy.h> 50 51#include <media/AudioBufferProvider.h> 52#include <media/ExtendedAudioBufferProvider.h> 53 54#include "FastCapture.h" 55#include "FastMixer.h" 56#include <media/nbaio/NBAIO.h> 57#include "AudioWatchdog.h" 58#include "AudioMixer.h" 59 60#include <powermanager/IPowerManager.h> 61 62#include <media/nbaio/NBLog.h> 63#include <private/media/AudioTrackShared.h> 64 65namespace android { 66 67struct audio_track_cblk_t; 68struct effect_param_cblk_t; 69class AudioMixer; 70class AudioBuffer; 71class AudioResampler; 72class FastMixer; 73class ServerProxy; 74 75// ---------------------------------------------------------------------------- 76 77// AudioFlinger has a hard-coded upper limit of 2 channels for capture and playback. 78// There is support for > 2 channel tracks down-mixed to 2 channel output via a down-mix effect. 79// Adding full support for > 2 channel capture or playback would require more than simply changing 80// this #define. There is an independent hard-coded upper limit in AudioMixer; 81// removing that AudioMixer limit would be necessary but insufficient to support > 2 channels. 82// The macro FCC_2 highlights some (but not all) places where there is are 2-channel assumptions. 83// Search also for "2", "left", "right", "[0]", "[1]", ">> 16", "<< 16", etc. 84#define FCC_2 2 // FCC_2 = Fixed Channel Count 2 85 86static const nsecs_t kDefaultStandbyTimeInNsecs = seconds(3); 87 88#define INCLUDING_FROM_AUDIOFLINGER_H 89 90class AudioFlinger : 91 public BinderService<AudioFlinger>, 92 public BnAudioFlinger 93{ 94 friend class BinderService<AudioFlinger>; // for AudioFlinger() 95public: 96 static const char* getServiceName() ANDROID_API { return "media.audio_flinger"; } 97 98 virtual status_t dump(int fd, const Vector<String16>& args); 99 100 // IAudioFlinger interface, in binder opcode order 101 virtual sp<IAudioTrack> createTrack( 102 audio_stream_type_t streamType, 103 uint32_t sampleRate, 104 audio_format_t format, 105 audio_channel_mask_t channelMask, 106 size_t *pFrameCount, 107 IAudioFlinger::track_flags_t *flags, 108 const sp<IMemory>& sharedBuffer, 109 audio_io_handle_t output, 110 pid_t tid, 111 int *sessionId, 112 int clientUid, 113 status_t *status /*non-NULL*/); 114 115 virtual sp<IAudioRecord> openRecord( 116 audio_io_handle_t input, 117 uint32_t sampleRate, 118 audio_format_t format, 119 audio_channel_mask_t channelMask, 120 size_t *pFrameCount, 121 IAudioFlinger::track_flags_t *flags, 122 pid_t tid, 123 int *sessionId, 124 size_t *notificationFrames, 125 sp<IMemory>& cblk, 126 sp<IMemory>& buffers, 127 status_t *status /*non-NULL*/); 128 129 virtual uint32_t sampleRate(audio_io_handle_t output) const; 130 virtual audio_format_t format(audio_io_handle_t output) const; 131 virtual size_t frameCount(audio_io_handle_t output) const; 132 virtual uint32_t latency(audio_io_handle_t output) const; 133 134 virtual status_t setMasterVolume(float value); 135 virtual status_t setMasterMute(bool muted); 136 137 virtual float masterVolume() const; 138 virtual bool masterMute() const; 139 140 virtual status_t setStreamVolume(audio_stream_type_t stream, float value, 141 audio_io_handle_t output); 142 virtual status_t setStreamMute(audio_stream_type_t stream, bool muted); 143 144 virtual float streamVolume(audio_stream_type_t stream, 145 audio_io_handle_t output) const; 146 virtual bool streamMute(audio_stream_type_t stream) const; 147 148 virtual status_t setMode(audio_mode_t mode); 149 150 virtual status_t setMicMute(bool state); 151 virtual bool getMicMute() const; 152 153 virtual status_t setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs); 154 virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys) const; 155 156 virtual void registerClient(const sp<IAudioFlingerClient>& client); 157 158 virtual size_t getInputBufferSize(uint32_t sampleRate, audio_format_t format, 159 audio_channel_mask_t channelMask) const; 160 161 virtual status_t openOutput(audio_module_handle_t module, 162 audio_io_handle_t *output, 163 audio_config_t *config, 164 audio_devices_t *devices, 165 const String8& address, 166 uint32_t *latencyMs, 167 audio_output_flags_t flags); 168 169 virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1, 170 audio_io_handle_t output2); 171 172 virtual status_t closeOutput(audio_io_handle_t output); 173 174 virtual status_t suspendOutput(audio_io_handle_t output); 175 176 virtual status_t restoreOutput(audio_io_handle_t output); 177 178 virtual status_t openInput(audio_module_handle_t module, 179 audio_io_handle_t *input, 180 audio_config_t *config, 181 audio_devices_t *device, 182 const String8& address, 183 audio_source_t source, 184 audio_input_flags_t flags); 185 186 virtual status_t closeInput(audio_io_handle_t input); 187 188 virtual status_t invalidateStream(audio_stream_type_t stream); 189 190 virtual status_t setVoiceVolume(float volume); 191 192 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, 193 audio_io_handle_t output) const; 194 195 virtual uint32_t getInputFramesLost(audio_io_handle_t ioHandle) const; 196 197 virtual audio_unique_id_t newAudioUniqueId(); 198 199 virtual void acquireAudioSessionId(int audioSession, pid_t pid); 200 201 virtual void releaseAudioSessionId(int audioSession, pid_t pid); 202 203 virtual status_t queryNumberEffects(uint32_t *numEffects) const; 204 205 virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor) const; 206 207 virtual status_t getEffectDescriptor(const effect_uuid_t *pUuid, 208 effect_descriptor_t *descriptor) const; 209 210 virtual sp<IEffect> createEffect( 211 effect_descriptor_t *pDesc, 212 const sp<IEffectClient>& effectClient, 213 int32_t priority, 214 audio_io_handle_t io, 215 int sessionId, 216 status_t *status /*non-NULL*/, 217 int *id, 218 int *enabled); 219 220 virtual status_t moveEffects(int sessionId, audio_io_handle_t srcOutput, 221 audio_io_handle_t dstOutput); 222 223 virtual audio_module_handle_t loadHwModule(const char *name); 224 225 virtual uint32_t getPrimaryOutputSamplingRate(); 226 virtual size_t getPrimaryOutputFrameCount(); 227 228 virtual status_t setLowRamDevice(bool isLowRamDevice); 229 230 /* List available audio ports and their attributes */ 231 virtual status_t listAudioPorts(unsigned int *num_ports, 232 struct audio_port *ports); 233 234 /* Get attributes for a given audio port */ 235 virtual status_t getAudioPort(struct audio_port *port); 236 237 /* Create an audio patch between several source and sink ports */ 238 virtual status_t createAudioPatch(const struct audio_patch *patch, 239 audio_patch_handle_t *handle); 240 241 /* Release an audio patch */ 242 virtual status_t releaseAudioPatch(audio_patch_handle_t handle); 243 244 /* List existing audio patches */ 245 virtual status_t listAudioPatches(unsigned int *num_patches, 246 struct audio_patch *patches); 247 248 /* Set audio port configuration */ 249 virtual status_t setAudioPortConfig(const struct audio_port_config *config); 250 251 virtual status_t onTransact( 252 uint32_t code, 253 const Parcel& data, 254 Parcel* reply, 255 uint32_t flags); 256 257 // end of IAudioFlinger interface 258 259 sp<NBLog::Writer> newWriter_l(size_t size, const char *name); 260 void unregisterWriter(const sp<NBLog::Writer>& writer); 261private: 262 static const size_t kLogMemorySize = 40 * 1024; 263 sp<MemoryDealer> mLogMemoryDealer; // == 0 when NBLog is disabled 264 // When a log writer is unregistered, it is done lazily so that media.log can continue to see it 265 // for as long as possible. The memory is only freed when it is needed for another log writer. 266 Vector< sp<NBLog::Writer> > mUnregisteredWriters; 267 Mutex mUnregisteredWritersLock; 268public: 269 270 class SyncEvent; 271 272 typedef void (*sync_event_callback_t)(const wp<SyncEvent>& event) ; 273 274 class SyncEvent : public RefBase { 275 public: 276 SyncEvent(AudioSystem::sync_event_t type, 277 int triggerSession, 278 int listenerSession, 279 sync_event_callback_t callBack, 280 wp<RefBase> cookie) 281 : mType(type), mTriggerSession(triggerSession), mListenerSession(listenerSession), 282 mCallback(callBack), mCookie(cookie) 283 {} 284 285 virtual ~SyncEvent() {} 286 287 void trigger() { Mutex::Autolock _l(mLock); if (mCallback) mCallback(this); } 288 bool isCancelled() const { Mutex::Autolock _l(mLock); return (mCallback == NULL); } 289 void cancel() { Mutex::Autolock _l(mLock); mCallback = NULL; } 290 AudioSystem::sync_event_t type() const { return mType; } 291 int triggerSession() const { return mTriggerSession; } 292 int listenerSession() const { return mListenerSession; } 293 wp<RefBase> cookie() const { return mCookie; } 294 295 private: 296 const AudioSystem::sync_event_t mType; 297 const int mTriggerSession; 298 const int mListenerSession; 299 sync_event_callback_t mCallback; 300 const wp<RefBase> mCookie; 301 mutable Mutex mLock; 302 }; 303 304 sp<SyncEvent> createSyncEvent(AudioSystem::sync_event_t type, 305 int triggerSession, 306 int listenerSession, 307 sync_event_callback_t callBack, 308 wp<RefBase> cookie); 309 310private: 311 class AudioHwDevice; // fwd declaration for findSuitableHwDev_l 312 313 audio_mode_t getMode() const { return mMode; } 314 315 bool btNrecIsOff() const { return mBtNrecIsOff; } 316 317 AudioFlinger() ANDROID_API; 318 virtual ~AudioFlinger(); 319 320 // call in any IAudioFlinger method that accesses mPrimaryHardwareDev 321 status_t initCheck() const { return mPrimaryHardwareDev == NULL ? 322 NO_INIT : NO_ERROR; } 323 324 // RefBase 325 virtual void onFirstRef(); 326 327 AudioHwDevice* findSuitableHwDev_l(audio_module_handle_t module, 328 audio_devices_t devices); 329 void purgeStaleEffects_l(); 330 331 // Set kEnableExtendedChannels to true to enable greater than stereo output 332 // for the MixerThread and device sink. Number of channels allowed is 333 // FCC_2 <= channels <= AudioMixer::MAX_NUM_CHANNELS. 334 static const bool kEnableExtendedChannels = true; 335 336 // Returns true if channel mask is permitted for the PCM sink in the MixerThread 337 static inline bool isValidPcmSinkChannelMask(audio_channel_mask_t channelMask) { 338 switch (audio_channel_mask_get_representation(channelMask)) { 339 case AUDIO_CHANNEL_REPRESENTATION_POSITION: { 340 uint32_t channelCount = FCC_2; // stereo is default 341 if (kEnableExtendedChannels) { 342 channelCount = audio_channel_count_from_out_mask(channelMask); 343 if (channelCount < FCC_2 // mono is not supported at this time 344 || channelCount > AudioMixer::MAX_NUM_CHANNELS) { 345 return false; 346 } 347 } 348 // check that channelMask is the "canonical" one we expect for the channelCount. 349 return channelMask == audio_channel_out_mask_from_count(channelCount); 350 } 351 default: 352 return false; 353 } 354 } 355 356 // Set kEnableExtendedPrecision to true to use extended precision in MixerThread 357 static const bool kEnableExtendedPrecision = true; 358 359 // Returns true if format is permitted for the PCM sink in the MixerThread 360 static inline bool isValidPcmSinkFormat(audio_format_t format) { 361 switch (format) { 362 case AUDIO_FORMAT_PCM_16_BIT: 363 return true; 364 case AUDIO_FORMAT_PCM_FLOAT: 365 case AUDIO_FORMAT_PCM_24_BIT_PACKED: 366 case AUDIO_FORMAT_PCM_32_BIT: 367 case AUDIO_FORMAT_PCM_8_24_BIT: 368 return kEnableExtendedPrecision; 369 default: 370 return false; 371 } 372 } 373 374 // standby delay for MIXER and DUPLICATING playback threads is read from property 375 // ro.audio.flinger_standbytime_ms or defaults to kDefaultStandbyTimeInNsecs 376 static nsecs_t mStandbyTimeInNsecs; 377 378 // incremented by 2 when screen state changes, bit 0 == 1 means "off" 379 // AudioFlinger::setParameters() updates, other threads read w/o lock 380 static uint32_t mScreenState; 381 382 // Internal dump utilities. 383 static const int kDumpLockRetries = 50; 384 static const int kDumpLockSleepUs = 20000; 385 static bool dumpTryLock(Mutex& mutex); 386 void dumpPermissionDenial(int fd, const Vector<String16>& args); 387 void dumpClients(int fd, const Vector<String16>& args); 388 void dumpInternals(int fd, const Vector<String16>& args); 389 390 // --- Client --- 391 class Client : public RefBase { 392 public: 393 Client(const sp<AudioFlinger>& audioFlinger, pid_t pid); 394 virtual ~Client(); 395 sp<MemoryDealer> heap() const; 396 pid_t pid() const { return mPid; } 397 sp<AudioFlinger> audioFlinger() const { return mAudioFlinger; } 398 399 bool reserveTimedTrack(); 400 void releaseTimedTrack(); 401 402 private: 403 Client(const Client&); 404 Client& operator = (const Client&); 405 const sp<AudioFlinger> mAudioFlinger; 406 const sp<MemoryDealer> mMemoryDealer; 407 const pid_t mPid; 408 409 Mutex mTimedTrackLock; 410 int mTimedTrackCount; 411 }; 412 413 // --- Notification Client --- 414 class NotificationClient : public IBinder::DeathRecipient { 415 public: 416 NotificationClient(const sp<AudioFlinger>& audioFlinger, 417 const sp<IAudioFlingerClient>& client, 418 pid_t pid); 419 virtual ~NotificationClient(); 420 421 sp<IAudioFlingerClient> audioFlingerClient() const { return mAudioFlingerClient; } 422 423 // IBinder::DeathRecipient 424 virtual void binderDied(const wp<IBinder>& who); 425 426 private: 427 NotificationClient(const NotificationClient&); 428 NotificationClient& operator = (const NotificationClient&); 429 430 const sp<AudioFlinger> mAudioFlinger; 431 const pid_t mPid; 432 const sp<IAudioFlingerClient> mAudioFlingerClient; 433 }; 434 435 class TrackHandle; 436 class RecordHandle; 437 class RecordThread; 438 class PlaybackThread; 439 class MixerThread; 440 class DirectOutputThread; 441 class OffloadThread; 442 class DuplicatingThread; 443 class AsyncCallbackThread; 444 class Track; 445 class RecordTrack; 446 class EffectModule; 447 class EffectHandle; 448 class EffectChain; 449 struct AudioStreamOut; 450 struct AudioStreamIn; 451 452 struct stream_type_t { 453 stream_type_t() 454 : volume(1.0f), 455 mute(false) 456 { 457 } 458 float volume; 459 bool mute; 460 }; 461 462 // --- PlaybackThread --- 463 464#include "Threads.h" 465 466#include "Effects.h" 467 468#include "PatchPanel.h" 469 470 // server side of the client's IAudioTrack 471 class TrackHandle : public android::BnAudioTrack { 472 public: 473 TrackHandle(const sp<PlaybackThread::Track>& track); 474 virtual ~TrackHandle(); 475 virtual sp<IMemory> getCblk() const; 476 virtual status_t start(); 477 virtual void stop(); 478 virtual void flush(); 479 virtual void pause(); 480 virtual status_t attachAuxEffect(int effectId); 481 virtual status_t allocateTimedBuffer(size_t size, 482 sp<IMemory>* buffer); 483 virtual status_t queueTimedBuffer(const sp<IMemory>& buffer, 484 int64_t pts); 485 virtual status_t setMediaTimeTransform(const LinearTransform& xform, 486 int target); 487 virtual status_t setParameters(const String8& keyValuePairs); 488 virtual status_t getTimestamp(AudioTimestamp& timestamp); 489 virtual void signal(); // signal playback thread for a change in control block 490 491 virtual status_t onTransact( 492 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 493 494 private: 495 const sp<PlaybackThread::Track> mTrack; 496 }; 497 498 // server side of the client's IAudioRecord 499 class RecordHandle : public android::BnAudioRecord { 500 public: 501 RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack); 502 virtual ~RecordHandle(); 503 virtual status_t start(int /*AudioSystem::sync_event_t*/ event, int triggerSession); 504 virtual void stop(); 505 virtual status_t onTransact( 506 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 507 private: 508 const sp<RecordThread::RecordTrack> mRecordTrack; 509 510 // for use from destructor 511 void stop_nonvirtual(); 512 }; 513 514 515 PlaybackThread *checkPlaybackThread_l(audio_io_handle_t output) const; 516 MixerThread *checkMixerThread_l(audio_io_handle_t output) const; 517 RecordThread *checkRecordThread_l(audio_io_handle_t input) const; 518 sp<RecordThread> openInput_l(audio_module_handle_t module, 519 audio_io_handle_t *input, 520 audio_config_t *config, 521 audio_devices_t device, 522 const String8& address, 523 audio_source_t source, 524 audio_input_flags_t flags); 525 sp<PlaybackThread> openOutput_l(audio_module_handle_t module, 526 audio_io_handle_t *output, 527 audio_config_t *config, 528 audio_devices_t devices, 529 const String8& address, 530 audio_output_flags_t flags); 531 532 void closeOutputFinish(sp<PlaybackThread> thread); 533 void closeInputFinish(sp<RecordThread> thread); 534 535 // no range check, AudioFlinger::mLock held 536 bool streamMute_l(audio_stream_type_t stream) const 537 { return mStreamTypes[stream].mute; } 538 // no range check, doesn't check per-thread stream volume, AudioFlinger::mLock held 539 float streamVolume_l(audio_stream_type_t stream) const 540 { return mStreamTypes[stream].volume; } 541 void audioConfigChanged(int event, audio_io_handle_t ioHandle, const void *param2); 542 543 // Allocate an audio_io_handle_t, session ID, effect ID, or audio_module_handle_t. 544 // They all share the same ID space, but the namespaces are actually independent 545 // because there are separate KeyedVectors for each kind of ID. 546 // The return value is uint32_t, but is cast to signed for some IDs. 547 // FIXME This API does not handle rollover to zero (for unsigned IDs), 548 // or from positive to negative (for signed IDs). 549 // Thus it may fail by returning an ID of the wrong sign, 550 // or by returning a non-unique ID. 551 uint32_t nextUniqueId(); 552 553 status_t moveEffectChain_l(int sessionId, 554 PlaybackThread *srcThread, 555 PlaybackThread *dstThread, 556 bool reRegister); 557 // return thread associated with primary hardware device, or NULL 558 PlaybackThread *primaryPlaybackThread_l() const; 559 audio_devices_t primaryOutputDevice_l() const; 560 561 sp<PlaybackThread> getEffectThread_l(int sessionId, int EffectId); 562 563 564 void removeClient_l(pid_t pid); 565 void removeNotificationClient(pid_t pid); 566 bool isNonOffloadableGlobalEffectEnabled_l(); 567 void onNonOffloadableGlobalEffectEnable(); 568 569 class AudioHwDevice { 570 public: 571 enum Flags { 572 AHWD_CAN_SET_MASTER_VOLUME = 0x1, 573 AHWD_CAN_SET_MASTER_MUTE = 0x2, 574 }; 575 576 AudioHwDevice(audio_module_handle_t handle, 577 const char *moduleName, 578 audio_hw_device_t *hwDevice, 579 Flags flags) 580 : mHandle(handle), mModuleName(strdup(moduleName)) 581 , mHwDevice(hwDevice) 582 , mFlags(flags) { } 583 /*virtual*/ ~AudioHwDevice() { free((void *)mModuleName); } 584 585 bool canSetMasterVolume() const { 586 return (0 != (mFlags & AHWD_CAN_SET_MASTER_VOLUME)); 587 } 588 589 bool canSetMasterMute() const { 590 return (0 != (mFlags & AHWD_CAN_SET_MASTER_MUTE)); 591 } 592 593 audio_module_handle_t handle() const { return mHandle; } 594 const char *moduleName() const { return mModuleName; } 595 audio_hw_device_t *hwDevice() const { return mHwDevice; } 596 uint32_t version() const { return mHwDevice->common.version; } 597 598 private: 599 const audio_module_handle_t mHandle; 600 const char * const mModuleName; 601 audio_hw_device_t * const mHwDevice; 602 const Flags mFlags; 603 }; 604 605 // AudioStreamOut and AudioStreamIn are immutable, so their fields are const. 606 // For emphasis, we could also make all pointers to them be "const *", 607 // but that would clutter the code unnecessarily. 608 609 struct AudioStreamOut { 610 AudioHwDevice* const audioHwDev; 611 audio_stream_out_t* const stream; 612 const audio_output_flags_t flags; 613 614 audio_hw_device_t* hwDev() const { return audioHwDev->hwDevice(); } 615 616 AudioStreamOut(AudioHwDevice *dev, audio_stream_out_t *out, audio_output_flags_t flags) : 617 audioHwDev(dev), stream(out), flags(flags) {} 618 }; 619 620 struct AudioStreamIn { 621 AudioHwDevice* const audioHwDev; 622 audio_stream_in_t* const stream; 623 624 audio_hw_device_t* hwDev() const { return audioHwDev->hwDevice(); } 625 626 AudioStreamIn(AudioHwDevice *dev, audio_stream_in_t *in) : 627 audioHwDev(dev), stream(in) {} 628 }; 629 630 // for mAudioSessionRefs only 631 struct AudioSessionRef { 632 AudioSessionRef(int sessionid, pid_t pid) : 633 mSessionid(sessionid), mPid(pid), mCnt(1) {} 634 const int mSessionid; 635 const pid_t mPid; 636 int mCnt; 637 }; 638 639 mutable Mutex mLock; 640 // protects mClients and mNotificationClients. 641 // must be locked after mLock and ThreadBase::mLock if both must be locked 642 // avoids acquiring AudioFlinger::mLock from inside thread loop. 643 mutable Mutex mClientLock; 644 // protected by mClientLock 645 DefaultKeyedVector< pid_t, wp<Client> > mClients; // see ~Client() 646 647 mutable Mutex mHardwareLock; 648 // NOTE: If both mLock and mHardwareLock mutexes must be held, 649 // always take mLock before mHardwareLock 650 651 // These two fields are immutable after onFirstRef(), so no lock needed to access 652 AudioHwDevice* mPrimaryHardwareDev; // mAudioHwDevs[0] or NULL 653 DefaultKeyedVector<audio_module_handle_t, AudioHwDevice*> mAudioHwDevs; 654 655 // for dump, indicates which hardware operation is currently in progress (but not stream ops) 656 enum hardware_call_state { 657 AUDIO_HW_IDLE = 0, // no operation in progress 658 AUDIO_HW_INIT, // init_check 659 AUDIO_HW_OUTPUT_OPEN, // open_output_stream 660 AUDIO_HW_OUTPUT_CLOSE, // unused 661 AUDIO_HW_INPUT_OPEN, // unused 662 AUDIO_HW_INPUT_CLOSE, // unused 663 AUDIO_HW_STANDBY, // unused 664 AUDIO_HW_SET_MASTER_VOLUME, // set_master_volume 665 AUDIO_HW_GET_ROUTING, // unused 666 AUDIO_HW_SET_ROUTING, // unused 667 AUDIO_HW_GET_MODE, // unused 668 AUDIO_HW_SET_MODE, // set_mode 669 AUDIO_HW_GET_MIC_MUTE, // get_mic_mute 670 AUDIO_HW_SET_MIC_MUTE, // set_mic_mute 671 AUDIO_HW_SET_VOICE_VOLUME, // set_voice_volume 672 AUDIO_HW_SET_PARAMETER, // set_parameters 673 AUDIO_HW_GET_INPUT_BUFFER_SIZE, // get_input_buffer_size 674 AUDIO_HW_GET_MASTER_VOLUME, // get_master_volume 675 AUDIO_HW_GET_PARAMETER, // get_parameters 676 AUDIO_HW_SET_MASTER_MUTE, // set_master_mute 677 AUDIO_HW_GET_MASTER_MUTE, // get_master_mute 678 }; 679 680 mutable hardware_call_state mHardwareStatus; // for dump only 681 682 683 DefaultKeyedVector< audio_io_handle_t, sp<PlaybackThread> > mPlaybackThreads; 684 stream_type_t mStreamTypes[AUDIO_STREAM_CNT]; 685 686 // member variables below are protected by mLock 687 float mMasterVolume; 688 bool mMasterMute; 689 // end of variables protected by mLock 690 691 DefaultKeyedVector< audio_io_handle_t, sp<RecordThread> > mRecordThreads; 692 693 // protected by mClientLock 694 DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients; 695 696 volatile int32_t mNextUniqueId; // updated by android_atomic_inc 697 // nextUniqueId() returns uint32_t, but this is declared int32_t 698 // because the atomic operations require an int32_t 699 700 audio_mode_t mMode; 701 bool mBtNrecIsOff; 702 703 // protected by mLock 704 Vector<AudioSessionRef*> mAudioSessionRefs; 705 706 float masterVolume_l() const; 707 bool masterMute_l() const; 708 audio_module_handle_t loadHwModule_l(const char *name); 709 710 Vector < sp<SyncEvent> > mPendingSyncEvents; // sync events awaiting for a session 711 // to be created 712 713private: 714 sp<Client> registerPid(pid_t pid); // always returns non-0 715 716 // for use from destructor 717 status_t closeOutput_nonvirtual(audio_io_handle_t output); 718 void closeOutputInternal_l(sp<PlaybackThread> thread); 719 status_t closeInput_nonvirtual(audio_io_handle_t input); 720 void closeInputInternal_l(sp<RecordThread> thread); 721 722#ifdef TEE_SINK 723 // all record threads serially share a common tee sink, which is re-created on format change 724 sp<NBAIO_Sink> mRecordTeeSink; 725 sp<NBAIO_Source> mRecordTeeSource; 726#endif 727 728public: 729 730#ifdef TEE_SINK 731 // tee sink, if enabled by property, allows dumpsys to write most recent audio to .wav file 732 static void dumpTee(int fd, const sp<NBAIO_Source>& source, audio_io_handle_t id = 0); 733 734 // whether tee sink is enabled by property 735 static bool mTeeSinkInputEnabled; 736 static bool mTeeSinkOutputEnabled; 737 static bool mTeeSinkTrackEnabled; 738 739 // runtime configured size of each tee sink pipe, in frames 740 static size_t mTeeSinkInputFrames; 741 static size_t mTeeSinkOutputFrames; 742 static size_t mTeeSinkTrackFrames; 743 744 // compile-time default size of tee sink pipes, in frames 745 // 0x200000 stereo 16-bit PCM frames = 47.5 seconds at 44.1 kHz, 8 megabytes 746 static const size_t kTeeSinkInputFramesDefault = 0x200000; 747 static const size_t kTeeSinkOutputFramesDefault = 0x200000; 748 static const size_t kTeeSinkTrackFramesDefault = 0x200000; 749#endif 750 751 // This method reads from a variable without mLock, but the variable is updated under mLock. So 752 // we might read a stale value, or a value that's inconsistent with respect to other variables. 753 // In this case, it's safe because the return value isn't used for making an important decision. 754 // The reason we don't want to take mLock is because it could block the caller for a long time. 755 bool isLowRamDevice() const { return mIsLowRamDevice; } 756 757private: 758 bool mIsLowRamDevice; 759 bool mIsDeviceTypeKnown; 760 nsecs_t mGlobalEffectEnableTime; // when a global effect was last enabled 761 762 sp<PatchPanel> mPatchPanel; 763 764 uint32_t mPrimaryOutputSampleRate; // sample rate of the primary output, or zero if none 765 // protected by mHardwareLock 766}; 767 768#undef INCLUDING_FROM_AUDIOFLINGER_H 769 770const char *formatToString(audio_format_t format); 771 772// ---------------------------------------------------------------------------- 773 774}; // namespace android 775 776#endif // ANDROID_AUDIO_FLINGER_H 777