AudioFlinger.h revision 079123ee3d2e20bbc17a7ddbd96ca46bed27898f
1/* //device/include/server/AudioFlinger/AudioFlinger.h 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 <stdint.h> 22#include <sys/types.h> 23#include <limits.h> 24 25#include <media/IAudioFlinger.h> 26#include <media/IAudioFlingerClient.h> 27#include <media/IAudioTrack.h> 28#include <media/IAudioRecord.h> 29#include <media/AudioTrack.h> 30 31#include <utils/Atomic.h> 32#include <utils/Errors.h> 33#include <utils/threads.h> 34#include <utils/SortedVector.h> 35#include <utils/TypeHelpers.h> 36#include <utils/Vector.h> 37 38#include <binder/BinderService.h> 39#include <binder/MemoryDealer.h> 40 41#include <system/audio.h> 42#include <hardware/audio.h> 43 44#include "AudioBufferProvider.h" 45 46#include <powermanager/IPowerManager.h> 47 48namespace android { 49 50class audio_track_cblk_t; 51class effect_param_cblk_t; 52class AudioMixer; 53class AudioBuffer; 54class AudioResampler; 55 56// ---------------------------------------------------------------------------- 57 58#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true )) 59#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false )) 60 61 62// ---------------------------------------------------------------------------- 63 64static const nsecs_t kStandbyTimeInNsecs = seconds(3); 65 66class AudioFlinger : 67 public BinderService<AudioFlinger>, 68 public BnAudioFlinger 69{ 70 friend class BinderService<AudioFlinger>; 71public: 72 static char const* getServiceName() { return "media.audio_flinger"; } 73 74 virtual status_t dump(int fd, const Vector<String16>& args); 75 76 // IAudioFlinger interface 77 virtual sp<IAudioTrack> createTrack( 78 pid_t pid, 79 int streamType, 80 uint32_t sampleRate, 81 uint32_t format, 82 uint32_t channelMask, 83 int frameCount, 84 uint32_t flags, 85 const sp<IMemory>& sharedBuffer, 86 int output, 87 int *sessionId, 88 status_t *status); 89 90 virtual uint32_t sampleRate(int output) const; 91 virtual int channelCount(int output) const; 92 virtual uint32_t format(int output) const; 93 virtual size_t frameCount(int output) const; 94 virtual uint32_t latency(int output) const; 95 96 virtual status_t setMasterVolume(float value); 97 virtual status_t setMasterMute(bool muted); 98 99 virtual float masterVolume() const; 100 virtual bool masterMute() const; 101 102 virtual status_t setStreamVolume(int stream, float value, int output); 103 virtual status_t setStreamMute(int stream, bool muted); 104 105 virtual float streamVolume(int stream, int output) const; 106 virtual bool streamMute(int stream) const; 107 108 virtual status_t setMode(int mode); 109 110 virtual status_t setMicMute(bool state); 111 virtual bool getMicMute() const; 112 113 virtual status_t setParameters(int ioHandle, const String8& keyValuePairs); 114 virtual String8 getParameters(int ioHandle, const String8& keys); 115 116 virtual void registerClient(const sp<IAudioFlingerClient>& client); 117 118 virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount); 119 virtual unsigned int getInputFramesLost(int ioHandle); 120 121 virtual int openOutput(uint32_t *pDevices, 122 uint32_t *pSamplingRate, 123 uint32_t *pFormat, 124 uint32_t *pChannels, 125 uint32_t *pLatencyMs, 126 uint32_t flags); 127 128 virtual int openDuplicateOutput(int output1, int output2); 129 130 virtual status_t closeOutput(int output); 131 132 virtual status_t suspendOutput(int output); 133 134 virtual status_t restoreOutput(int output); 135 136 virtual int openInput(uint32_t *pDevices, 137 uint32_t *pSamplingRate, 138 uint32_t *pFormat, 139 uint32_t *pChannels, 140 uint32_t acoustics); 141 142 virtual status_t closeInput(int input); 143 144 virtual status_t setStreamOutput(uint32_t stream, int output); 145 146 virtual status_t setVoiceVolume(float volume); 147 148 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output); 149 150 virtual int newAudioSessionId(); 151 152 virtual void acquireAudioSessionId(int audioSession); 153 154 virtual void releaseAudioSessionId(int audioSession); 155 156 virtual status_t queryNumberEffects(uint32_t *numEffects); 157 158 virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor); 159 160 virtual status_t getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor); 161 162 virtual sp<IEffect> createEffect(pid_t pid, 163 effect_descriptor_t *pDesc, 164 const sp<IEffectClient>& effectClient, 165 int32_t priority, 166 int io, 167 int sessionId, 168 status_t *status, 169 int *id, 170 int *enabled); 171 172 virtual status_t moveEffects(int sessionId, int srcOutput, int dstOutput); 173 174 enum hardware_call_state { 175 AUDIO_HW_IDLE = 0, 176 AUDIO_HW_INIT, 177 AUDIO_HW_OUTPUT_OPEN, 178 AUDIO_HW_OUTPUT_CLOSE, 179 AUDIO_HW_INPUT_OPEN, 180 AUDIO_HW_INPUT_CLOSE, 181 AUDIO_HW_STANDBY, 182 AUDIO_HW_SET_MASTER_VOLUME, 183 AUDIO_HW_GET_ROUTING, 184 AUDIO_HW_SET_ROUTING, 185 AUDIO_HW_GET_MODE, 186 AUDIO_HW_SET_MODE, 187 AUDIO_HW_GET_MIC_MUTE, 188 AUDIO_HW_SET_MIC_MUTE, 189 AUDIO_SET_VOICE_VOLUME, 190 AUDIO_SET_PARAMETER, 191 }; 192 193 // record interface 194 virtual sp<IAudioRecord> openRecord( 195 pid_t pid, 196 int input, 197 uint32_t sampleRate, 198 uint32_t format, 199 uint32_t channelMask, 200 int frameCount, 201 uint32_t flags, 202 int *sessionId, 203 status_t *status); 204 205 virtual status_t onTransact( 206 uint32_t code, 207 const Parcel& data, 208 Parcel* reply, 209 uint32_t flags); 210 211 uint32_t getMode() { return mMode; } 212 213 bool btNrecIsOff() { return mBtNrecIsOff; } 214 215private: 216 AudioFlinger(); 217 virtual ~AudioFlinger(); 218 219 status_t initCheck() const; 220 virtual void onFirstRef(); 221 audio_hw_device_t* findSuitableHwDev_l(uint32_t devices); 222 void purgeStaleEffects_l(); 223 224 // Internal dump utilites. 225 status_t dumpPermissionDenial(int fd, const Vector<String16>& args); 226 status_t dumpClients(int fd, const Vector<String16>& args); 227 status_t dumpInternals(int fd, const Vector<String16>& args); 228 229 // --- Client --- 230 class Client : public RefBase { 231 public: 232 Client(const sp<AudioFlinger>& audioFlinger, pid_t pid); 233 virtual ~Client(); 234 const sp<MemoryDealer>& heap() const; 235 pid_t pid() const { return mPid; } 236 sp<AudioFlinger> audioFlinger() { return mAudioFlinger; } 237 238 private: 239 Client(const Client&); 240 Client& operator = (const Client&); 241 sp<AudioFlinger> mAudioFlinger; 242 sp<MemoryDealer> mMemoryDealer; 243 pid_t mPid; 244 }; 245 246 // --- Notification Client --- 247 class NotificationClient : public IBinder::DeathRecipient { 248 public: 249 NotificationClient(const sp<AudioFlinger>& audioFlinger, 250 const sp<IAudioFlingerClient>& client, 251 pid_t pid); 252 virtual ~NotificationClient(); 253 254 sp<IAudioFlingerClient> client() { return mClient; } 255 256 // IBinder::DeathRecipient 257 virtual void binderDied(const wp<IBinder>& who); 258 259 private: 260 NotificationClient(const NotificationClient&); 261 NotificationClient& operator = (const NotificationClient&); 262 263 sp<AudioFlinger> mAudioFlinger; 264 pid_t mPid; 265 sp<IAudioFlingerClient> mClient; 266 }; 267 268 class TrackHandle; 269 class RecordHandle; 270 class RecordThread; 271 class PlaybackThread; 272 class MixerThread; 273 class DirectOutputThread; 274 class DuplicatingThread; 275 class Track; 276 class RecordTrack; 277 class EffectModule; 278 class EffectHandle; 279 class EffectChain; 280 struct AudioStreamOut; 281 struct AudioStreamIn; 282 283 class ThreadBase : public Thread { 284 public: 285 ThreadBase (const sp<AudioFlinger>& audioFlinger, int id, uint32_t device); 286 virtual ~ThreadBase(); 287 288 289 enum type { 290 MIXER, // Thread class is MixerThread 291 DIRECT, // Thread class is DirectOutputThread 292 DUPLICATING, // Thread class is DuplicatingThread 293 RECORD // Thread class is RecordThread 294 }; 295 296 status_t dumpBase(int fd, const Vector<String16>& args); 297 status_t dumpEffectChains(int fd, const Vector<String16>& args); 298 299 void clearPowerManager(); 300 301 // base for record and playback 302 class TrackBase : public AudioBufferProvider, public RefBase { 303 304 public: 305 enum track_state { 306 IDLE, 307 TERMINATED, 308 STOPPED, 309 RESUMING, 310 ACTIVE, 311 PAUSING, 312 PAUSED 313 }; 314 315 enum track_flags { 316 STEPSERVER_FAILED = 0x01, // StepServer could not acquire cblk->lock mutex 317 SYSTEM_FLAGS_MASK = 0x0000ffffUL, 318 // The upper 16 bits are used for track-specific flags. 319 }; 320 321 TrackBase(const wp<ThreadBase>& thread, 322 const sp<Client>& client, 323 uint32_t sampleRate, 324 uint32_t format, 325 uint32_t channelMask, 326 int frameCount, 327 uint32_t flags, 328 const sp<IMemory>& sharedBuffer, 329 int sessionId); 330 ~TrackBase(); 331 332 virtual status_t start() = 0; 333 virtual void stop() = 0; 334 sp<IMemory> getCblk() const; 335 audio_track_cblk_t* cblk() const { return mCblk; } 336 int sessionId() { return mSessionId; } 337 338 protected: 339 friend class ThreadBase; 340 friend class RecordHandle; 341 friend class PlaybackThread; 342 friend class RecordThread; 343 friend class MixerThread; 344 friend class DirectOutputThread; 345 346 TrackBase(const TrackBase&); 347 TrackBase& operator = (const TrackBase&); 348 349 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0; 350 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 351 352 uint32_t format() const { 353 return mFormat; 354 } 355 356 int channelCount() const ; 357 358 uint32_t channelMask() const; 359 360 int sampleRate() const; 361 362 void* getBuffer(uint32_t offset, uint32_t frames) const; 363 364 bool isStopped() const { 365 return mState == STOPPED; 366 } 367 368 bool isTerminated() const { 369 return mState == TERMINATED; 370 } 371 372 bool step(); 373 void reset(); 374 375 wp<ThreadBase> mThread; 376 sp<Client> mClient; 377 sp<IMemory> mCblkMemory; 378 audio_track_cblk_t* mCblk; 379 void* mBuffer; 380 void* mBufferEnd; 381 uint32_t mFrameCount; 382 // we don't really need a lock for these 383 int mState; 384 int mClientTid; 385 uint32_t mFormat; 386 uint32_t mFlags; 387 int mSessionId; 388 uint8_t mChannelCount; 389 uint32_t mChannelMask; 390 }; 391 392 class ConfigEvent { 393 public: 394 ConfigEvent() : mEvent(0), mParam(0) {} 395 396 int mEvent; 397 int mParam; 398 }; 399 400 class PMDeathRecipient : public IBinder::DeathRecipient { 401 public: 402 PMDeathRecipient(const wp<ThreadBase>& thread) : mThread(thread) {} 403 virtual ~PMDeathRecipient() {} 404 405 // IBinder::DeathRecipient 406 virtual void binderDied(const wp<IBinder>& who); 407 408 private: 409 PMDeathRecipient(const PMDeathRecipient&); 410 PMDeathRecipient& operator = (const PMDeathRecipient&); 411 412 wp<ThreadBase> mThread; 413 }; 414 415 virtual status_t initCheck() const = 0; 416 int type() const { return mType; } 417 uint32_t sampleRate() const; 418 int channelCount() const; 419 uint32_t format() const; 420 size_t frameCount() const; 421 void wakeUp() { mWaitWorkCV.broadcast(); } 422 void exit(); 423 virtual bool checkForNewParameters_l() = 0; 424 virtual status_t setParameters(const String8& keyValuePairs); 425 virtual String8 getParameters(const String8& keys) = 0; 426 virtual void audioConfigChanged_l(int event, int param = 0) = 0; 427 void sendConfigEvent(int event, int param = 0); 428 void sendConfigEvent_l(int event, int param = 0); 429 void processConfigEvents(); 430 int id() const { return mId;} 431 bool standby() { return mStandby; } 432 uint32_t device() { return mDevice; } 433 virtual audio_stream_t* stream() = 0; 434 435 sp<EffectHandle> createEffect_l( 436 const sp<AudioFlinger::Client>& client, 437 const sp<IEffectClient>& effectClient, 438 int32_t priority, 439 int sessionId, 440 effect_descriptor_t *desc, 441 int *enabled, 442 status_t *status); 443 void disconnectEffect(const sp< EffectModule>& effect, 444 const wp<EffectHandle>& handle, 445 bool unpiniflast); 446 447 // return values for hasAudioSession (bit field) 448 enum effect_state { 449 EFFECT_SESSION = 0x1, // the audio session corresponds to at least one 450 // effect 451 TRACK_SESSION = 0x2 // the audio session corresponds to at least one 452 // track 453 }; 454 455 // get effect chain corresponding to session Id. 456 sp<EffectChain> getEffectChain(int sessionId); 457 // same as getEffectChain() but must be called with ThreadBase mutex locked 458 sp<EffectChain> getEffectChain_l(int sessionId); 459 // add an effect chain to the chain list (mEffectChains) 460 virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0; 461 // remove an effect chain from the chain list (mEffectChains) 462 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain) = 0; 463 // lock mall effect chains Mutexes. Must be called before releasing the 464 // ThreadBase mutex before processing the mixer and effects. This guarantees the 465 // integrity of the chains during the process. 466 void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains); 467 // unlock effect chains after process 468 void unlockEffectChains(Vector<sp <EffectChain> >& effectChains); 469 // set audio mode to all effect chains 470 void setMode(uint32_t mode); 471 // get effect module with corresponding ID on specified audio session 472 sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId); 473 // add and effect module. Also creates the effect chain is none exists for 474 // the effects audio session 475 status_t addEffect_l(const sp< EffectModule>& effect); 476 // remove and effect module. Also removes the effect chain is this was the last 477 // effect 478 void removeEffect_l(const sp< EffectModule>& effect); 479 // detach all tracks connected to an auxiliary effect 480 virtual void detachAuxEffect_l(int effectId) {} 481 // returns either EFFECT_SESSION if effects on this audio session exist in one 482 // chain, or TRACK_SESSION if tracks on this audio session exist, or both 483 virtual uint32_t hasAudioSession(int sessionId) = 0; 484 // the value returned by default implementation is not important as the 485 // strategy is only meaningful for PlaybackThread which implements this method 486 virtual uint32_t getStrategyForSession_l(int sessionId) { return 0; } 487 488 // suspend or restore effect according to the type of effect passed. a NULL 489 // type pointer means suspend all effects in the session 490 void setEffectSuspended(const effect_uuid_t *type, 491 bool suspend, 492 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 493 // check if some effects must be suspended/restored when an effect is enabled 494 // or disabled 495 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 496 bool enabled, 497 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 498 void checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect, 499 bool enabled, 500 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 501 mutable Mutex mLock; 502 503 protected: 504 505 // entry describing an effect being suspended in mSuspendedSessions keyed vector 506 class SuspendedSessionDesc : public RefBase { 507 public: 508 SuspendedSessionDesc() : mRefCount(0) {} 509 510 int mRefCount; // number of active suspend requests 511 effect_uuid_t mType; // effect type UUID 512 }; 513 514 void acquireWakeLock(); 515 void acquireWakeLock_l(); 516 void releaseWakeLock(); 517 void releaseWakeLock_l(); 518 void setEffectSuspended_l(const effect_uuid_t *type, 519 bool suspend, 520 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 521 // updated mSuspendedSessions when an effect suspended or restored 522 void updateSuspendedSessions_l(const effect_uuid_t *type, 523 bool suspend, 524 int sessionId); 525 // check if some effects must be suspended when an effect chain is added 526 void checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain); 527 528 friend class AudioFlinger; 529 friend class Track; 530 friend class TrackBase; 531 friend class PlaybackThread; 532 friend class MixerThread; 533 friend class DirectOutputThread; 534 friend class DuplicatingThread; 535 friend class RecordThread; 536 friend class RecordTrack; 537 538 int mType; 539 Condition mWaitWorkCV; 540 sp<AudioFlinger> mAudioFlinger; 541 uint32_t mSampleRate; 542 size_t mFrameCount; 543 uint32_t mChannelMask; 544 uint16_t mChannelCount; 545 uint16_t mFrameSize; 546 uint32_t mFormat; 547 Condition mParamCond; 548 Vector<String8> mNewParameters; 549 status_t mParamStatus; 550 Vector<ConfigEvent> mConfigEvents; 551 bool mStandby; 552 int mId; 553 bool mExiting; 554 Vector< sp<EffectChain> > mEffectChains; 555 uint32_t mDevice; // output device for PlaybackThread 556 // input + output devices for RecordThread 557 static const int kNameLength = 32; 558 char mName[kNameLength]; 559 sp<IPowerManager> mPowerManager; 560 sp<IBinder> mWakeLockToken; 561 sp<PMDeathRecipient> mDeathRecipient; 562 // list of suspended effects per session and per type. The first vector is 563 // keyed by session ID, the second by type UUID timeLow field 564 KeyedVector< int, KeyedVector< int, sp<SuspendedSessionDesc> > > mSuspendedSessions; 565 }; 566 567 // --- PlaybackThread --- 568 class PlaybackThread : public ThreadBase { 569 public: 570 571 enum mixer_state { 572 MIXER_IDLE, 573 MIXER_TRACKS_ENABLED, 574 MIXER_TRACKS_READY 575 }; 576 577 // playback track 578 class Track : public TrackBase { 579 public: 580 Track( const wp<ThreadBase>& thread, 581 const sp<Client>& client, 582 int streamType, 583 uint32_t sampleRate, 584 uint32_t format, 585 uint32_t channelMask, 586 int frameCount, 587 const sp<IMemory>& sharedBuffer, 588 int sessionId); 589 ~Track(); 590 591 void dump(char* buffer, size_t size); 592 virtual status_t start(); 593 virtual void stop(); 594 void pause(); 595 596 void flush(); 597 void destroy(); 598 void mute(bool); 599 void setVolume(float left, float right); 600 int name() const { 601 return mName; 602 } 603 604 int type() const { 605 return mStreamType; 606 } 607 status_t attachAuxEffect(int EffectId); 608 void setAuxBuffer(int EffectId, int32_t *buffer); 609 int32_t *auxBuffer() { return mAuxBuffer; } 610 void setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; } 611 int16_t *mainBuffer() { return mMainBuffer; } 612 int auxEffectId() { return mAuxEffectId; } 613 614 615 protected: 616 friend class ThreadBase; 617 friend class TrackHandle; 618 friend class PlaybackThread; 619 friend class MixerThread; 620 friend class DirectOutputThread; 621 622 Track(const Track&); 623 Track& operator = (const Track&); 624 625 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 626 bool isMuted() { return mMute; } 627 bool isPausing() const { 628 return mState == PAUSING; 629 } 630 bool isPaused() const { 631 return mState == PAUSED; 632 } 633 bool isReady() const; 634 void setPaused() { mState = PAUSED; } 635 void reset(); 636 637 bool isOutputTrack() const { 638 return (mStreamType == AUDIO_STREAM_CNT); 639 } 640 641 // we don't really need a lock for these 642 float mVolume[2]; 643 volatile bool mMute; 644 // FILLED state is used for suppressing volume ramp at begin of playing 645 enum {FS_FILLING, FS_FILLED, FS_ACTIVE}; 646 mutable uint8_t mFillingUpStatus; 647 int8_t mRetryCount; 648 sp<IMemory> mSharedBuffer; 649 bool mResetDone; 650 int mStreamType; 651 int mName; 652 int16_t *mMainBuffer; 653 int32_t *mAuxBuffer; 654 int mAuxEffectId; 655 bool mHasVolumeController; 656 }; // end of Track 657 658 659 // playback track 660 class OutputTrack : public Track { 661 public: 662 663 class Buffer: public AudioBufferProvider::Buffer { 664 public: 665 int16_t *mBuffer; 666 }; 667 668 OutputTrack( const wp<ThreadBase>& thread, 669 DuplicatingThread *sourceThread, 670 uint32_t sampleRate, 671 uint32_t format, 672 uint32_t channelMask, 673 int frameCount); 674 ~OutputTrack(); 675 676 virtual status_t start(); 677 virtual void stop(); 678 bool write(int16_t* data, uint32_t frames); 679 bool bufferQueueEmpty() { return (mBufferQueue.size() == 0) ? true : false; } 680 bool isActive() { return mActive; } 681 wp<ThreadBase>& thread() { return mThread; } 682 683 private: 684 685 status_t obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs); 686 void clearBufferQueue(); 687 688 // Maximum number of pending buffers allocated by OutputTrack::write() 689 static const uint8_t kMaxOverFlowBuffers = 10; 690 691 Vector < Buffer* > mBufferQueue; 692 AudioBufferProvider::Buffer mOutBuffer; 693 bool mActive; 694 DuplicatingThread* mSourceThread; 695 }; // end of OutputTrack 696 697 PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 698 virtual ~PlaybackThread(); 699 700 virtual status_t dump(int fd, const Vector<String16>& args); 701 702 // Thread virtuals 703 virtual status_t readyToRun(); 704 virtual void onFirstRef(); 705 706 virtual status_t initCheck() const { return (mOutput == NULL) ? NO_INIT : NO_ERROR; } 707 708 virtual uint32_t latency() const; 709 710 virtual status_t setMasterVolume(float value); 711 virtual status_t setMasterMute(bool muted); 712 713 virtual float masterVolume() const; 714 virtual bool masterMute() const; 715 716 virtual status_t setStreamVolume(int stream, float value); 717 virtual status_t setStreamMute(int stream, bool muted); 718 719 virtual float streamVolume(int stream) const; 720 virtual bool streamMute(int stream) const; 721 722 sp<Track> createTrack_l( 723 const sp<AudioFlinger::Client>& client, 724 int streamType, 725 uint32_t sampleRate, 726 uint32_t format, 727 uint32_t channelMask, 728 int frameCount, 729 const sp<IMemory>& sharedBuffer, 730 int sessionId, 731 status_t *status); 732 733 AudioStreamOut* getOutput(); 734 AudioStreamOut* clearOutput(); 735 virtual audio_stream_t* stream(); 736 737 void suspend() { mSuspended++; } 738 void restore() { if (mSuspended) mSuspended--; } 739 bool isSuspended() { return (mSuspended != 0); } 740 virtual String8 getParameters(const String8& keys); 741 virtual void audioConfigChanged_l(int event, int param = 0); 742 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames); 743 int16_t *mixBuffer() { return mMixBuffer; }; 744 745 virtual void detachAuxEffect_l(int effectId); 746 status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track, 747 int EffectId); 748 status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track, 749 int EffectId); 750 751 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 752 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 753 virtual uint32_t hasAudioSession(int sessionId); 754 virtual uint32_t getStrategyForSession_l(int sessionId); 755 756 void setStreamValid(int streamType, bool valid); 757 758 struct stream_type_t { 759 stream_type_t() 760 : volume(1.0f), 761 mute(false), 762 valid(true) 763 { 764 } 765 float volume; 766 bool mute; 767 bool valid; 768 }; 769 770 protected: 771 int16_t* mMixBuffer; 772 int mSuspended; 773 int mBytesWritten; 774 bool mMasterMute; 775 SortedVector< wp<Track> > mActiveTracks; 776 777 virtual int getTrackName_l() = 0; 778 virtual void deleteTrackName_l(int name) = 0; 779 virtual uint32_t activeSleepTimeUs(); 780 virtual uint32_t idleSleepTimeUs() = 0; 781 virtual uint32_t suspendSleepTimeUs() = 0; 782 783 private: 784 785 friend class AudioFlinger; 786 friend class OutputTrack; 787 friend class Track; 788 friend class TrackBase; 789 friend class MixerThread; 790 friend class DirectOutputThread; 791 friend class DuplicatingThread; 792 793 PlaybackThread(const Client&); 794 PlaybackThread& operator = (const PlaybackThread&); 795 796 status_t addTrack_l(const sp<Track>& track); 797 void destroyTrack_l(const sp<Track>& track); 798 void removeTrack_l(const sp<Track>& track); 799 800 void readOutputParameters(); 801 802 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 803 status_t dumpTracks(int fd, const Vector<String16>& args); 804 805 SortedVector< sp<Track> > mTracks; 806 // mStreamTypes[] uses 1 additionnal stream type internally for the OutputTrack used by DuplicatingThread 807 stream_type_t mStreamTypes[AUDIO_STREAM_CNT + 1]; 808 AudioStreamOut* mOutput; 809 float mMasterVolume; 810 nsecs_t mLastWriteTime; 811 int mNumWrites; 812 int mNumDelayedWrites; 813 bool mInWrite; 814 }; 815 816 class MixerThread : public PlaybackThread { 817 public: 818 MixerThread (const sp<AudioFlinger>& audioFlinger, 819 AudioStreamOut* output, 820 int id, 821 uint32_t device); 822 virtual ~MixerThread(); 823 824 // Thread virtuals 825 virtual bool threadLoop(); 826 827 void invalidateTracks(int streamType); 828 virtual bool checkForNewParameters_l(); 829 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 830 831 protected: 832 uint32_t prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, 833 Vector< sp<Track> > *tracksToRemove); 834 virtual int getTrackName_l(); 835 virtual void deleteTrackName_l(int name); 836 virtual uint32_t idleSleepTimeUs(); 837 virtual uint32_t suspendSleepTimeUs(); 838 839 AudioMixer* mAudioMixer; 840 }; 841 842 class DirectOutputThread : public PlaybackThread { 843 public: 844 845 DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 846 ~DirectOutputThread(); 847 848 // Thread virtuals 849 virtual bool threadLoop(); 850 851 virtual bool checkForNewParameters_l(); 852 853 protected: 854 virtual int getTrackName_l(); 855 virtual void deleteTrackName_l(int name); 856 virtual uint32_t activeSleepTimeUs(); 857 virtual uint32_t idleSleepTimeUs(); 858 virtual uint32_t suspendSleepTimeUs(); 859 860 private: 861 void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp); 862 863 float mLeftVolFloat; 864 float mRightVolFloat; 865 uint16_t mLeftVolShort; 866 uint16_t mRightVolShort; 867 }; 868 869 class DuplicatingThread : public MixerThread { 870 public: 871 DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, int id); 872 ~DuplicatingThread(); 873 874 // Thread virtuals 875 virtual bool threadLoop(); 876 void addOutputTrack(MixerThread* thread); 877 void removeOutputTrack(MixerThread* thread); 878 uint32_t waitTimeMs() { return mWaitTimeMs; } 879 protected: 880 virtual uint32_t activeSleepTimeUs(); 881 882 private: 883 bool outputsReady(SortedVector< sp<OutputTrack> > &outputTracks); 884 void updateWaitTime(); 885 886 SortedVector < sp<OutputTrack> > mOutputTracks; 887 uint32_t mWaitTimeMs; 888 }; 889 890 PlaybackThread *checkPlaybackThread_l(int output) const; 891 MixerThread *checkMixerThread_l(int output) const; 892 RecordThread *checkRecordThread_l(int input) const; 893 float streamVolumeInternal(int stream) const { return mStreamTypes[stream].volume; } 894 void audioConfigChanged_l(int event, int ioHandle, void *param2); 895 896 uint32_t nextUniqueId(); 897 status_t moveEffectChain_l(int sessionId, 898 AudioFlinger::PlaybackThread *srcThread, 899 AudioFlinger::PlaybackThread *dstThread, 900 bool reRegister); 901 PlaybackThread *primaryPlaybackThread_l(); 902 uint32_t primaryOutputDevice_l(); 903 904 friend class AudioBuffer; 905 906 class TrackHandle : public android::BnAudioTrack { 907 public: 908 TrackHandle(const sp<PlaybackThread::Track>& track); 909 virtual ~TrackHandle(); 910 virtual status_t start(); 911 virtual void stop(); 912 virtual void flush(); 913 virtual void mute(bool); 914 virtual void pause(); 915 virtual void setVolume(float left, float right); 916 virtual sp<IMemory> getCblk() const; 917 virtual status_t attachAuxEffect(int effectId); 918 virtual status_t onTransact( 919 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 920 private: 921 sp<PlaybackThread::Track> mTrack; 922 }; 923 924 friend class Client; 925 friend class PlaybackThread::Track; 926 927 928 void removeClient_l(pid_t pid); 929 void removeNotificationClient(pid_t pid); 930 931 932 // record thread 933 class RecordThread : public ThreadBase, public AudioBufferProvider 934 { 935 public: 936 937 // record track 938 class RecordTrack : public TrackBase { 939 public: 940 RecordTrack(const wp<ThreadBase>& thread, 941 const sp<Client>& client, 942 uint32_t sampleRate, 943 uint32_t format, 944 uint32_t channelMask, 945 int frameCount, 946 uint32_t flags, 947 int sessionId); 948 ~RecordTrack(); 949 950 virtual status_t start(); 951 virtual void stop(); 952 953 bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; } 954 bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; } 955 956 void dump(char* buffer, size_t size); 957 958 private: 959 friend class AudioFlinger; 960 friend class RecordThread; 961 962 RecordTrack(const RecordTrack&); 963 RecordTrack& operator = (const RecordTrack&); 964 965 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 966 967 bool mOverflow; 968 }; 969 970 971 RecordThread(const sp<AudioFlinger>& audioFlinger, 972 AudioStreamIn *input, 973 uint32_t sampleRate, 974 uint32_t channels, 975 int id, 976 uint32_t device); 977 ~RecordThread(); 978 979 virtual bool threadLoop(); 980 virtual status_t readyToRun(); 981 virtual void onFirstRef(); 982 983 virtual status_t initCheck() const { return (mInput == NULL) ? NO_INIT : NO_ERROR; } 984 sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l( 985 const sp<AudioFlinger::Client>& client, 986 uint32_t sampleRate, 987 int format, 988 int channelMask, 989 int frameCount, 990 uint32_t flags, 991 int sessionId, 992 status_t *status); 993 994 status_t start(RecordTrack* recordTrack); 995 void stop(RecordTrack* recordTrack); 996 status_t dump(int fd, const Vector<String16>& args); 997 AudioStreamIn* getInput(); 998 AudioStreamIn* clearInput(); 999 virtual audio_stream_t* stream(); 1000 1001 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 1002 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 1003 virtual bool checkForNewParameters_l(); 1004 virtual String8 getParameters(const String8& keys); 1005 virtual void audioConfigChanged_l(int event, int param = 0); 1006 void readInputParameters(); 1007 virtual unsigned int getInputFramesLost(); 1008 1009 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 1010 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 1011 virtual uint32_t hasAudioSession(int sessionId); 1012 RecordTrack* track(); 1013 1014 private: 1015 RecordThread(); 1016 AudioStreamIn *mInput; 1017 RecordTrack* mTrack; 1018 sp<RecordTrack> mActiveTrack; 1019 Condition mStartStopCond; 1020 AudioResampler *mResampler; 1021 int32_t *mRsmpOutBuffer; 1022 int16_t *mRsmpInBuffer; 1023 size_t mRsmpInIndex; 1024 size_t mInputBytes; 1025 int mReqChannelCount; 1026 uint32_t mReqSampleRate; 1027 ssize_t mBytesRead; 1028 }; 1029 1030 class RecordHandle : public android::BnAudioRecord { 1031 public: 1032 RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack); 1033 virtual ~RecordHandle(); 1034 virtual status_t start(); 1035 virtual void stop(); 1036 virtual sp<IMemory> getCblk() const; 1037 virtual status_t onTransact( 1038 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 1039 private: 1040 sp<RecordThread::RecordTrack> mRecordTrack; 1041 }; 1042 1043 //--- Audio Effect Management 1044 1045 // EffectModule and EffectChain classes both have their own mutex to protect 1046 // state changes or resource modifications. Always respect the following order 1047 // if multiple mutexes must be acquired to avoid cross deadlock: 1048 // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule 1049 1050 // The EffectModule class is a wrapper object controlling the effect engine implementation 1051 // in the effect library. It prevents concurrent calls to process() and command() functions 1052 // from different client threads. It keeps a list of EffectHandle objects corresponding 1053 // to all client applications using this effect and notifies applications of effect state, 1054 // control or parameter changes. It manages the activation state machine to send appropriate 1055 // reset, enable, disable commands to effect engine and provide volume 1056 // ramping when effects are activated/deactivated. 1057 // When controlling an auxiliary effect, the EffectModule also provides an input buffer used by 1058 // the attached track(s) to accumulate their auxiliary channel. 1059 class EffectModule: public RefBase { 1060 public: 1061 EffectModule(const wp<ThreadBase>& wThread, 1062 const wp<AudioFlinger::EffectChain>& chain, 1063 effect_descriptor_t *desc, 1064 int id, 1065 int sessionId); 1066 ~EffectModule(); 1067 1068 enum effect_state { 1069 IDLE, 1070 RESTART, 1071 STARTING, 1072 ACTIVE, 1073 STOPPING, 1074 STOPPED, 1075 DESTROYED 1076 }; 1077 1078 int id() { return mId; } 1079 void process(); 1080 void updateState(); 1081 status_t command(uint32_t cmdCode, 1082 uint32_t cmdSize, 1083 void *pCmdData, 1084 uint32_t *replySize, 1085 void *pReplyData); 1086 1087 void reset_l(); 1088 status_t configure(); 1089 status_t init(); 1090 uint32_t state() { 1091 return mState; 1092 } 1093 uint32_t status() { 1094 return mStatus; 1095 } 1096 int sessionId() { 1097 return mSessionId; 1098 } 1099 status_t setEnabled(bool enabled); 1100 bool isEnabled(); 1101 bool isProcessEnabled(); 1102 1103 void setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; } 1104 int16_t *inBuffer() { return mConfig.inputCfg.buffer.s16; } 1105 void setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; } 1106 int16_t *outBuffer() { return mConfig.outputCfg.buffer.s16; } 1107 void setChain(const wp<EffectChain>& chain) { mChain = chain; } 1108 void setThread(const wp<ThreadBase>& thread) { mThread = thread; } 1109 wp<ThreadBase>& thread() { return mThread; } 1110 1111 status_t addHandle(sp<EffectHandle>& handle); 1112 void disconnect(const wp<EffectHandle>& handle, bool unpiniflast); 1113 size_t removeHandle (const wp<EffectHandle>& handle); 1114 1115 effect_descriptor_t& desc() { return mDescriptor; } 1116 wp<EffectChain>& chain() { return mChain; } 1117 1118 status_t setDevice(uint32_t device); 1119 status_t setVolume(uint32_t *left, uint32_t *right, bool controller); 1120 status_t setMode(uint32_t mode); 1121 status_t start(); 1122 status_t stop(); 1123 void setSuspended(bool suspended); 1124 bool suspended(); 1125 1126 sp<EffectHandle> controlHandle(); 1127 1128 bool isPinned() { return mPinned; } 1129 void unPin() { mPinned = false; } 1130 1131 status_t dump(int fd, const Vector<String16>& args); 1132 1133 protected: 1134 friend class EffectHandle; 1135 friend class AudioFlinger; 1136 bool mPinned; 1137 1138 // Maximum time allocated to effect engines to complete the turn off sequence 1139 static const uint32_t MAX_DISABLE_TIME_MS = 10000; 1140 1141 EffectModule(const EffectModule&); 1142 EffectModule& operator = (const EffectModule&); 1143 1144 status_t start_l(); 1145 status_t stop_l(); 1146 1147 Mutex mLock; // mutex for process, commands and handles list protection 1148 wp<ThreadBase> mThread; // parent thread 1149 wp<EffectChain> mChain; // parent effect chain 1150 int mId; // this instance unique ID 1151 int mSessionId; // audio session ID 1152 effect_descriptor_t mDescriptor;// effect descriptor received from effect engine 1153 effect_config_t mConfig; // input and output audio configuration 1154 effect_handle_t mEffectInterface; // Effect module C API 1155 status_t mStatus; // initialization status 1156 uint32_t mState; // current activation state (effect_state) 1157 Vector< wp<EffectHandle> > mHandles; // list of client handles 1158 uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after 1159 // sending disable command. 1160 uint32_t mDisableWaitCnt; // current process() calls count during disable period. 1161 bool mSuspended; // effect is suspended: temporarily disabled by framework 1162 }; 1163 1164 // The EffectHandle class implements the IEffect interface. It provides resources 1165 // to receive parameter updates, keeps track of effect control 1166 // ownership and state and has a pointer to the EffectModule object it is controlling. 1167 // There is one EffectHandle object for each application controlling (or using) 1168 // an effect module. 1169 // The EffectHandle is obtained by calling AudioFlinger::createEffect(). 1170 class EffectHandle: public android::BnEffect { 1171 public: 1172 1173 EffectHandle(const sp<EffectModule>& effect, 1174 const sp<AudioFlinger::Client>& client, 1175 const sp<IEffectClient>& effectClient, 1176 int32_t priority); 1177 virtual ~EffectHandle(); 1178 1179 // IEffect 1180 virtual status_t enable(); 1181 virtual status_t disable(); 1182 virtual status_t command(uint32_t cmdCode, 1183 uint32_t cmdSize, 1184 void *pCmdData, 1185 uint32_t *replySize, 1186 void *pReplyData); 1187 virtual void disconnect(); 1188 virtual void disconnect(bool unpiniflast); 1189 virtual sp<IMemory> getCblk() const; 1190 virtual status_t onTransact(uint32_t code, const Parcel& data, 1191 Parcel* reply, uint32_t flags); 1192 1193 1194 // Give or take control of effect module 1195 // - hasControl: true if control is given, false if removed 1196 // - signal: true client app should be signaled of change, false otherwise 1197 // - enabled: state of the effect when control is passed 1198 void setControl(bool hasControl, bool signal, bool enabled); 1199 void commandExecuted(uint32_t cmdCode, 1200 uint32_t cmdSize, 1201 void *pCmdData, 1202 uint32_t replySize, 1203 void *pReplyData); 1204 void setEnabled(bool enabled); 1205 bool enabled() { return mEnabled; } 1206 1207 // Getters 1208 int id() { return mEffect->id(); } 1209 int priority() { return mPriority; } 1210 bool hasControl() { return mHasControl; } 1211 sp<EffectModule> effect() { return mEffect; } 1212 1213 void dump(char* buffer, size_t size); 1214 1215 protected: 1216 friend class AudioFlinger; 1217 friend class EffectModule; 1218 EffectHandle(const EffectHandle&); 1219 EffectHandle& operator =(const EffectHandle&); 1220 1221 sp<EffectModule> mEffect; // pointer to controlled EffectModule 1222 sp<IEffectClient> mEffectClient; // callback interface for client notifications 1223 sp<Client> mClient; // client for shared memory allocation 1224 sp<IMemory> mCblkMemory; // shared memory for control block 1225 effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory 1226 uint8_t* mBuffer; // pointer to parameter area in shared memory 1227 int mPriority; // client application priority to control the effect 1228 bool mHasControl; // true if this handle is controlling the effect 1229 bool mEnabled; // cached enable state: needed when the effect is 1230 // restored after being suspended 1231 }; 1232 1233 // the EffectChain class represents a group of effects associated to one audio session. 1234 // There can be any number of EffectChain objects per output mixer thread (PlaybackThread). 1235 // The EffecChain with session ID 0 contains global effects applied to the output mix. 1236 // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks) 1237 // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding 1238 // in the effect process order. When attached to a track (session ID != 0), it also provide it's own 1239 // input buffer used by the track as accumulation buffer. 1240 class EffectChain: public RefBase { 1241 public: 1242 EffectChain(const wp<ThreadBase>& wThread, int sessionId); 1243 ~EffectChain(); 1244 1245 // special key used for an entry in mSuspendedEffects keyed vector 1246 // corresponding to a suspend all request. 1247 static const int kKeyForSuspendAll = 0; 1248 1249 // minimum duration during which we force calling effect process when last track on 1250 // a session is stopped or removed to allow effect tail to be rendered 1251 static const int kProcessTailDurationMs = 1000; 1252 1253 void process_l(); 1254 1255 void lock() { 1256 mLock.lock(); 1257 } 1258 void unlock() { 1259 mLock.unlock(); 1260 } 1261 1262 status_t addEffect_l(const sp<EffectModule>& handle); 1263 size_t removeEffect_l(const sp<EffectModule>& handle); 1264 1265 int sessionId() { return mSessionId; } 1266 void setSessionId(int sessionId) { mSessionId = sessionId; } 1267 1268 sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor); 1269 sp<EffectModule> getEffectFromId_l(int id); 1270 sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type); 1271 bool setVolume_l(uint32_t *left, uint32_t *right); 1272 void setDevice_l(uint32_t device); 1273 void setMode_l(uint32_t mode); 1274 1275 void setInBuffer(int16_t *buffer, bool ownsBuffer = false) { 1276 mInBuffer = buffer; 1277 mOwnInBuffer = ownsBuffer; 1278 } 1279 int16_t *inBuffer() { 1280 return mInBuffer; 1281 } 1282 void setOutBuffer(int16_t *buffer) { 1283 mOutBuffer = buffer; 1284 } 1285 int16_t *outBuffer() { 1286 return mOutBuffer; 1287 } 1288 1289 void incTrackCnt() { android_atomic_inc(&mTrackCnt); } 1290 void decTrackCnt() { android_atomic_dec(&mTrackCnt); } 1291 int32_t trackCnt() { return mTrackCnt;} 1292 1293 void incActiveTrackCnt() { android_atomic_inc(&mActiveTrackCnt); 1294 mTailBufferCount = mMaxTailBuffers; } 1295 void decActiveTrackCnt() { android_atomic_dec(&mActiveTrackCnt); } 1296 int32_t activeTrackCnt() { return mActiveTrackCnt;} 1297 1298 uint32_t strategy() { return mStrategy; } 1299 void setStrategy(uint32_t strategy) 1300 { mStrategy = strategy; } 1301 1302 // suspend effect of the given type 1303 void setEffectSuspended_l(const effect_uuid_t *type, 1304 bool suspend); 1305 // suspend all eligible effects 1306 void setEffectSuspendedAll_l(bool suspend); 1307 // check if effects should be suspend or restored when a given effect is enable or disabled 1308 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 1309 bool enabled); 1310 1311 status_t dump(int fd, const Vector<String16>& args); 1312 1313 protected: 1314 friend class AudioFlinger; 1315 EffectChain(const EffectChain&); 1316 EffectChain& operator =(const EffectChain&); 1317 1318 class SuspendedEffectDesc : public RefBase { 1319 public: 1320 SuspendedEffectDesc() : mRefCount(0) {} 1321 1322 int mRefCount; 1323 effect_uuid_t mType; 1324 wp<EffectModule> mEffect; 1325 }; 1326 1327 // get a list of effect modules to suspend when an effect of the type 1328 // passed is enabled. 1329 Vector< sp<EffectModule> > getSuspendEligibleEffects(); 1330 // get an effect module if it is currently enable 1331 sp<EffectModule> getEffectIfEnabled(const effect_uuid_t *type); 1332 // true if the effect whose descriptor is passed can be suspended 1333 // OEMs can modify the rules implemented in this method to exclude specific effect 1334 // types or implementations from the suspend/restore mechanism. 1335 bool isEffectEligibleForSuspend(const effect_descriptor_t& desc); 1336 1337 wp<ThreadBase> mThread; // parent mixer thread 1338 Mutex mLock; // mutex protecting effect list 1339 Vector<sp<EffectModule> > mEffects; // list of effect modules 1340 int mSessionId; // audio session ID 1341 int16_t *mInBuffer; // chain input buffer 1342 int16_t *mOutBuffer; // chain output buffer 1343 volatile int32_t mActiveTrackCnt; // number of active tracks connected 1344 volatile int32_t mTrackCnt; // number of tracks connected 1345 int32_t mTailBufferCount; // current effect tail buffer count 1346 int32_t mMaxTailBuffers; // maximum effect tail buffers 1347 bool mOwnInBuffer; // true if the chain owns its input buffer 1348 int mVolumeCtrlIdx; // index of insert effect having control over volume 1349 uint32_t mLeftVolume; // previous volume on left channel 1350 uint32_t mRightVolume; // previous volume on right channel 1351 uint32_t mNewLeftVolume; // new volume on left channel 1352 uint32_t mNewRightVolume; // new volume on right channel 1353 uint32_t mStrategy; // strategy for this effect chain 1354 // mSuspendedEffects lists all effect currently suspended in the chain 1355 // use effect type UUID timelow field as key. There is no real risk of identical 1356 // timeLow fields among effect type UUIDs. 1357 KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects; 1358 }; 1359 1360 struct AudioStreamOut { 1361 audio_hw_device_t *hwDev; 1362 audio_stream_out_t *stream; 1363 1364 AudioStreamOut(audio_hw_device_t *dev, audio_stream_out_t *out) : 1365 hwDev(dev), stream(out) {} 1366 }; 1367 1368 struct AudioStreamIn { 1369 audio_hw_device_t *hwDev; 1370 audio_stream_in_t *stream; 1371 1372 AudioStreamIn(audio_hw_device_t *dev, audio_stream_in_t *in) : 1373 hwDev(dev), stream(in) {} 1374 }; 1375 1376 struct AudioSessionRef { 1377 int sessionid; 1378 pid_t pid; 1379 int cnt; 1380 }; 1381 1382 friend class RecordThread; 1383 friend class PlaybackThread; 1384 1385 mutable Mutex mLock; 1386 1387 DefaultKeyedVector< pid_t, wp<Client> > mClients; 1388 1389 mutable Mutex mHardwareLock; 1390 audio_hw_device_t* mPrimaryHardwareDev; 1391 Vector<audio_hw_device_t*> mAudioHwDevs; 1392 mutable int mHardwareStatus; 1393 1394 1395 DefaultKeyedVector< int, sp<PlaybackThread> > mPlaybackThreads; 1396 PlaybackThread::stream_type_t mStreamTypes[AUDIO_STREAM_CNT]; 1397 float mMasterVolume; 1398 bool mMasterMute; 1399 1400 DefaultKeyedVector< int, sp<RecordThread> > mRecordThreads; 1401 1402 DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients; 1403 volatile int32_t mNextUniqueId; 1404 uint32_t mMode; 1405 bool mBtNrecIsOff; 1406 1407 Vector<AudioSessionRef*> mAudioSessionRefs; 1408}; 1409 1410 1411// ---------------------------------------------------------------------------- 1412 1413}; // namespace android 1414 1415#endif // ANDROID_AUDIO_FLINGER_H 1416