AudioFlinger.h revision 58f30210ea540b6ce5aa6a46330cd3499483cb97
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 58static const nsecs_t kStandbyTimeInNsecs = seconds(3); 59 60class AudioFlinger : 61 public BinderService<AudioFlinger>, 62 public BnAudioFlinger 63{ 64 friend class BinderService<AudioFlinger>; 65public: 66 static const char* getServiceName() { return "media.audio_flinger"; } 67 68 virtual status_t dump(int fd, const Vector<String16>& args); 69 70 // IAudioFlinger interface 71 virtual sp<IAudioTrack> createTrack( 72 pid_t pid, 73 audio_stream_type_t streamType, 74 uint32_t sampleRate, 75 audio_format_t format, 76 uint32_t channelMask, 77 int frameCount, 78 uint32_t flags, 79 const sp<IMemory>& sharedBuffer, 80 int output, 81 int *sessionId, 82 status_t *status); 83 84 virtual uint32_t sampleRate(int output) const; 85 virtual int channelCount(int output) const; 86 virtual audio_format_t format(int output) const; 87 virtual size_t frameCount(int output) const; 88 virtual uint32_t latency(int output) const; 89 90 virtual status_t setMasterVolume(float value); 91 virtual status_t setMasterMute(bool muted); 92 93 virtual float masterVolume() const; 94 virtual bool masterMute() const; 95 96 virtual status_t setStreamVolume(audio_stream_type_t stream, float value, int output); 97 virtual status_t setStreamMute(audio_stream_type_t stream, bool muted); 98 99 virtual float streamVolume(audio_stream_type_t stream, int output) const; 100 virtual bool streamMute(audio_stream_type_t stream) const; 101 102 virtual status_t setMode(audio_mode_t mode); 103 104 virtual status_t setMicMute(bool state); 105 virtual bool getMicMute() const; 106 107 virtual status_t setParameters(int ioHandle, const String8& keyValuePairs); 108 virtual String8 getParameters(int ioHandle, const String8& keys); 109 110 virtual void registerClient(const sp<IAudioFlingerClient>& client); 111 112 virtual size_t getInputBufferSize(uint32_t sampleRate, audio_format_t format, int channelCount); 113 virtual unsigned int getInputFramesLost(int ioHandle); 114 115 virtual int openOutput(uint32_t *pDevices, 116 uint32_t *pSamplingRate, 117 audio_format_t *pFormat, 118 uint32_t *pChannels, 119 uint32_t *pLatencyMs, 120 uint32_t flags); 121 122 virtual int openDuplicateOutput(int output1, int output2); 123 124 virtual status_t closeOutput(int output); 125 126 virtual status_t suspendOutput(int output); 127 128 virtual status_t restoreOutput(int output); 129 130 virtual int openInput(uint32_t *pDevices, 131 uint32_t *pSamplingRate, 132 audio_format_t *pFormat, 133 uint32_t *pChannels, 134 uint32_t acoustics); 135 136 virtual status_t closeInput(int input); 137 138 virtual status_t setStreamOutput(audio_stream_type_t stream, int output); 139 140 virtual status_t setVoiceVolume(float volume); 141 142 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output); 143 144 virtual int newAudioSessionId(); 145 146 virtual void acquireAudioSessionId(int audioSession); 147 148 virtual void releaseAudioSessionId(int audioSession); 149 150 virtual status_t queryNumberEffects(uint32_t *numEffects); 151 152 virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor); 153 154 virtual status_t getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor); 155 156 virtual sp<IEffect> createEffect(pid_t pid, 157 effect_descriptor_t *pDesc, 158 const sp<IEffectClient>& effectClient, 159 int32_t priority, 160 int io, 161 int sessionId, 162 status_t *status, 163 int *id, 164 int *enabled); 165 166 virtual status_t moveEffects(int sessionId, int srcOutput, int dstOutput); 167 168 enum hardware_call_state { 169 AUDIO_HW_IDLE = 0, 170 AUDIO_HW_INIT, 171 AUDIO_HW_OUTPUT_OPEN, 172 AUDIO_HW_OUTPUT_CLOSE, 173 AUDIO_HW_INPUT_OPEN, 174 AUDIO_HW_INPUT_CLOSE, 175 AUDIO_HW_STANDBY, 176 AUDIO_HW_SET_MASTER_VOLUME, 177 AUDIO_HW_GET_ROUTING, 178 AUDIO_HW_SET_ROUTING, 179 AUDIO_HW_GET_MODE, 180 AUDIO_HW_SET_MODE, 181 AUDIO_HW_GET_MIC_MUTE, 182 AUDIO_HW_SET_MIC_MUTE, 183 AUDIO_SET_VOICE_VOLUME, 184 AUDIO_SET_PARAMETER, 185 }; 186 187 // record interface 188 virtual sp<IAudioRecord> openRecord( 189 pid_t pid, 190 int input, 191 uint32_t sampleRate, 192 audio_format_t format, 193 uint32_t channelMask, 194 int frameCount, 195 uint32_t flags, 196 int *sessionId, 197 status_t *status); 198 199 virtual status_t onTransact( 200 uint32_t code, 201 const Parcel& data, 202 Parcel* reply, 203 uint32_t flags); 204 205 audio_mode_t getMode() const { return mMode; } 206 207 bool btNrecIsOff() { return mBtNrecIsOff; } 208 209private: 210 AudioFlinger(); 211 virtual ~AudioFlinger(); 212 213 status_t initCheck() const; 214 virtual void onFirstRef(); 215 audio_hw_device_t* findSuitableHwDev_l(uint32_t devices); 216 void purgeStaleEffects_l(); 217 218 // Internal dump utilites. 219 status_t dumpPermissionDenial(int fd, const Vector<String16>& args); 220 status_t dumpClients(int fd, const Vector<String16>& args); 221 status_t dumpInternals(int fd, const Vector<String16>& args); 222 223 // --- Client --- 224 class Client : public RefBase { 225 public: 226 Client(const sp<AudioFlinger>& audioFlinger, pid_t pid); 227 virtual ~Client(); 228 const sp<MemoryDealer>& heap() const; 229 pid_t pid() const { return mPid; } 230 sp<AudioFlinger> audioFlinger() { return mAudioFlinger; } 231 232 private: 233 Client(const Client&); 234 Client& operator = (const Client&); 235 sp<AudioFlinger> mAudioFlinger; 236 sp<MemoryDealer> mMemoryDealer; 237 pid_t mPid; 238 }; 239 240 // --- Notification Client --- 241 class NotificationClient : public IBinder::DeathRecipient { 242 public: 243 NotificationClient(const sp<AudioFlinger>& audioFlinger, 244 const sp<IAudioFlingerClient>& client, 245 pid_t pid); 246 virtual ~NotificationClient(); 247 248 sp<IAudioFlingerClient> client() { return mClient; } 249 250 // IBinder::DeathRecipient 251 virtual void binderDied(const wp<IBinder>& who); 252 253 private: 254 NotificationClient(const NotificationClient&); 255 NotificationClient& operator = (const NotificationClient&); 256 257 sp<AudioFlinger> mAudioFlinger; 258 pid_t mPid; 259 sp<IAudioFlingerClient> mClient; 260 }; 261 262 class TrackHandle; 263 class RecordHandle; 264 class RecordThread; 265 class PlaybackThread; 266 class MixerThread; 267 class DirectOutputThread; 268 class DuplicatingThread; 269 class Track; 270 class RecordTrack; 271 class EffectModule; 272 class EffectHandle; 273 class EffectChain; 274 struct AudioStreamOut; 275 struct AudioStreamIn; 276 277 class ThreadBase : public Thread { 278 public: 279 ThreadBase (const sp<AudioFlinger>& audioFlinger, int id, uint32_t device); 280 virtual ~ThreadBase(); 281 282 283 enum type { 284 MIXER, // Thread class is MixerThread 285 DIRECT, // Thread class is DirectOutputThread 286 DUPLICATING, // Thread class is DuplicatingThread 287 RECORD // Thread class is RecordThread 288 }; 289 290 status_t dumpBase(int fd, const Vector<String16>& args); 291 status_t dumpEffectChains(int fd, const Vector<String16>& args); 292 293 void clearPowerManager(); 294 295 // base for record and playback 296 class TrackBase : public AudioBufferProvider, public RefBase { 297 298 public: 299 enum track_state { 300 IDLE, 301 TERMINATED, 302 STOPPED, 303 RESUMING, 304 ACTIVE, 305 PAUSING, 306 PAUSED 307 }; 308 309 enum track_flags { 310 STEPSERVER_FAILED = 0x01, // StepServer could not acquire cblk->lock mutex 311 SYSTEM_FLAGS_MASK = 0x0000ffffUL, 312 // The upper 16 bits are used for track-specific flags. 313 }; 314 315 TrackBase(const wp<ThreadBase>& thread, 316 const sp<Client>& client, 317 uint32_t sampleRate, 318 audio_format_t format, 319 uint32_t channelMask, 320 int frameCount, 321 uint32_t flags, 322 const sp<IMemory>& sharedBuffer, 323 int sessionId); 324 ~TrackBase(); 325 326 virtual status_t start() = 0; 327 virtual void stop() = 0; 328 sp<IMemory> getCblk() const; 329 audio_track_cblk_t* cblk() const { return mCblk; } 330 int sessionId() { return mSessionId; } 331 332 protected: 333 friend class ThreadBase; 334 friend class RecordHandle; 335 friend class PlaybackThread; 336 friend class RecordThread; 337 friend class MixerThread; 338 friend class DirectOutputThread; 339 340 TrackBase(const TrackBase&); 341 TrackBase& operator = (const TrackBase&); 342 343 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0; 344 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 345 346 audio_format_t format() const { 347 return mFormat; 348 } 349 350 int channelCount() const ; 351 352 uint32_t channelMask() const; 353 354 int sampleRate() const; 355 356 void* getBuffer(uint32_t offset, uint32_t frames) const; 357 358 bool isStopped() const { 359 return mState == STOPPED; 360 } 361 362 bool isTerminated() const { 363 return mState == TERMINATED; 364 } 365 366 bool step(); 367 void reset(); 368 369 wp<ThreadBase> mThread; 370 sp<Client> mClient; 371 sp<IMemory> mCblkMemory; 372 audio_track_cblk_t* mCblk; 373 void* mBuffer; 374 void* mBufferEnd; 375 uint32_t mFrameCount; 376 // we don't really need a lock for these 377 int mState; 378 int mClientTid; 379 audio_format_t mFormat; 380 uint32_t mFlags; 381 int mSessionId; 382 uint8_t mChannelCount; 383 uint32_t mChannelMask; 384 }; 385 386 class ConfigEvent { 387 public: 388 ConfigEvent() : mEvent(0), mParam(0) {} 389 390 int mEvent; 391 int mParam; 392 }; 393 394 class PMDeathRecipient : public IBinder::DeathRecipient { 395 public: 396 PMDeathRecipient(const wp<ThreadBase>& thread) : mThread(thread) {} 397 virtual ~PMDeathRecipient() {} 398 399 // IBinder::DeathRecipient 400 virtual void binderDied(const wp<IBinder>& who); 401 402 private: 403 PMDeathRecipient(const PMDeathRecipient&); 404 PMDeathRecipient& operator = (const PMDeathRecipient&); 405 406 wp<ThreadBase> mThread; 407 }; 408 409 virtual status_t initCheck() const = 0; 410 int type() const { return mType; } 411 uint32_t sampleRate() const; 412 int channelCount() const; 413 audio_format_t format() const; 414 size_t frameCount() const; 415 void wakeUp() { mWaitWorkCV.broadcast(); } 416 void exit(); 417 virtual bool checkForNewParameters_l() = 0; 418 virtual status_t setParameters(const String8& keyValuePairs); 419 virtual String8 getParameters(const String8& keys) = 0; 420 virtual void audioConfigChanged_l(int event, int param = 0) = 0; 421 void sendConfigEvent(int event, int param = 0); 422 void sendConfigEvent_l(int event, int param = 0); 423 void processConfigEvents(); 424 int id() const { return mId;} 425 bool standby() { return mStandby; } 426 uint32_t device() { return mDevice; } 427 virtual audio_stream_t* stream() = 0; 428 429 sp<EffectHandle> createEffect_l( 430 const sp<AudioFlinger::Client>& client, 431 const sp<IEffectClient>& effectClient, 432 int32_t priority, 433 int sessionId, 434 effect_descriptor_t *desc, 435 int *enabled, 436 status_t *status); 437 void disconnectEffect(const sp< EffectModule>& effect, 438 const wp<EffectHandle>& handle, 439 bool unpiniflast); 440 441 // return values for hasAudioSession (bit field) 442 enum effect_state { 443 EFFECT_SESSION = 0x1, // the audio session corresponds to at least one 444 // effect 445 TRACK_SESSION = 0x2 // the audio session corresponds to at least one 446 // track 447 }; 448 449 // get effect chain corresponding to session Id. 450 sp<EffectChain> getEffectChain(int sessionId); 451 // same as getEffectChain() but must be called with ThreadBase mutex locked 452 sp<EffectChain> getEffectChain_l(int sessionId); 453 // add an effect chain to the chain list (mEffectChains) 454 virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0; 455 // remove an effect chain from the chain list (mEffectChains) 456 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain) = 0; 457 // lock mall effect chains Mutexes. Must be called before releasing the 458 // ThreadBase mutex before processing the mixer and effects. This guarantees the 459 // integrity of the chains during the process. 460 void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains); 461 // unlock effect chains after process 462 void unlockEffectChains(Vector<sp <EffectChain> >& effectChains); 463 // set audio mode to all effect chains 464 void setMode(audio_mode_t mode); 465 // get effect module with corresponding ID on specified audio session 466 sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId); 467 // add and effect module. Also creates the effect chain is none exists for 468 // the effects audio session 469 status_t addEffect_l(const sp< EffectModule>& effect); 470 // remove and effect module. Also removes the effect chain is this was the last 471 // effect 472 void removeEffect_l(const sp< EffectModule>& effect); 473 // detach all tracks connected to an auxiliary effect 474 virtual void detachAuxEffect_l(int effectId) {} 475 // returns either EFFECT_SESSION if effects on this audio session exist in one 476 // chain, or TRACK_SESSION if tracks on this audio session exist, or both 477 virtual uint32_t hasAudioSession(int sessionId) = 0; 478 // the value returned by default implementation is not important as the 479 // strategy is only meaningful for PlaybackThread which implements this method 480 virtual uint32_t getStrategyForSession_l(int sessionId) { return 0; } 481 482 // suspend or restore effect according to the type of effect passed. a NULL 483 // type pointer means suspend all effects in the session 484 void setEffectSuspended(const effect_uuid_t *type, 485 bool suspend, 486 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 487 // check if some effects must be suspended/restored when an effect is enabled 488 // or disabled 489 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 490 bool enabled, 491 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 492 void checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect, 493 bool enabled, 494 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 495 mutable Mutex mLock; 496 497 protected: 498 499 // entry describing an effect being suspended in mSuspendedSessions keyed vector 500 class SuspendedSessionDesc : public RefBase { 501 public: 502 SuspendedSessionDesc() : mRefCount(0) {} 503 504 int mRefCount; // number of active suspend requests 505 effect_uuid_t mType; // effect type UUID 506 }; 507 508 void acquireWakeLock(); 509 void acquireWakeLock_l(); 510 void releaseWakeLock(); 511 void releaseWakeLock_l(); 512 void setEffectSuspended_l(const effect_uuid_t *type, 513 bool suspend, 514 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 515 // updated mSuspendedSessions when an effect suspended or restored 516 void updateSuspendedSessions_l(const effect_uuid_t *type, 517 bool suspend, 518 int sessionId); 519 // check if some effects must be suspended when an effect chain is added 520 void checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain); 521 522 friend class AudioFlinger; 523 friend class Track; 524 friend class TrackBase; 525 friend class PlaybackThread; 526 friend class MixerThread; 527 friend class DirectOutputThread; 528 friend class DuplicatingThread; 529 friend class RecordThread; 530 friend class RecordTrack; 531 532 int mType; 533 Condition mWaitWorkCV; 534 sp<AudioFlinger> mAudioFlinger; 535 uint32_t mSampleRate; 536 size_t mFrameCount; 537 uint32_t mChannelMask; 538 uint16_t mChannelCount; 539 size_t mFrameSize; 540 audio_format_t mFormat; 541 Condition mParamCond; 542 Vector<String8> mNewParameters; 543 status_t mParamStatus; 544 Vector<ConfigEvent> mConfigEvents; 545 bool mStandby; 546 int mId; 547 bool mExiting; 548 Vector< sp<EffectChain> > mEffectChains; 549 uint32_t mDevice; // output device for PlaybackThread 550 // input + output devices for RecordThread 551 static const int kNameLength = 32; 552 char mName[kNameLength]; 553 sp<IPowerManager> mPowerManager; 554 sp<IBinder> mWakeLockToken; 555 sp<PMDeathRecipient> mDeathRecipient; 556 // list of suspended effects per session and per type. The first vector is 557 // keyed by session ID, the second by type UUID timeLow field 558 KeyedVector< int, KeyedVector< int, sp<SuspendedSessionDesc> > > mSuspendedSessions; 559 }; 560 561 // --- PlaybackThread --- 562 class PlaybackThread : public ThreadBase { 563 public: 564 565 enum mixer_state { 566 MIXER_IDLE, 567 MIXER_TRACKS_ENABLED, 568 MIXER_TRACKS_READY 569 }; 570 571 // playback track 572 class Track : public TrackBase { 573 public: 574 Track( const wp<ThreadBase>& thread, 575 const sp<Client>& client, 576 audio_stream_type_t streamType, 577 uint32_t sampleRate, 578 audio_format_t format, 579 uint32_t channelMask, 580 int frameCount, 581 const sp<IMemory>& sharedBuffer, 582 int sessionId); 583 ~Track(); 584 585 void dump(char* buffer, size_t size); 586 virtual status_t start(); 587 virtual void stop(); 588 void pause(); 589 590 void flush(); 591 void destroy(); 592 void mute(bool); 593 int name() const { 594 return mName; 595 } 596 597 audio_stream_type_t type() const { 598 return mStreamType; 599 } 600 status_t attachAuxEffect(int EffectId); 601 void setAuxBuffer(int EffectId, int32_t *buffer); 602 int32_t *auxBuffer() { return mAuxBuffer; } 603 void setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; } 604 int16_t *mainBuffer() { return mMainBuffer; } 605 int auxEffectId() { return mAuxEffectId; } 606 607 608 protected: 609 friend class ThreadBase; 610 friend class TrackHandle; 611 friend class PlaybackThread; 612 friend class MixerThread; 613 friend class DirectOutputThread; 614 615 Track(const Track&); 616 Track& operator = (const Track&); 617 618 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 619 bool isMuted() { return mMute; } 620 bool isPausing() const { 621 return mState == PAUSING; 622 } 623 bool isPaused() const { 624 return mState == PAUSED; 625 } 626 bool isReady() const; 627 void setPaused() { mState = PAUSED; } 628 void reset(); 629 630 bool isOutputTrack() const { 631 return (mStreamType == AUDIO_STREAM_CNT); 632 } 633 634 // we don't really need a lock for these 635 volatile bool mMute; 636 // FILLED state is used for suppressing volume ramp at begin of playing 637 enum {FS_FILLING, FS_FILLED, FS_ACTIVE}; 638 mutable uint8_t mFillingUpStatus; 639 int8_t mRetryCount; 640 sp<IMemory> mSharedBuffer; 641 bool mResetDone; 642 audio_stream_type_t mStreamType; 643 int mName; 644 int16_t *mMainBuffer; 645 int32_t *mAuxBuffer; 646 int mAuxEffectId; 647 bool mHasVolumeController; 648 }; // end of Track 649 650 651 // playback track 652 class OutputTrack : public Track { 653 public: 654 655 class Buffer: public AudioBufferProvider::Buffer { 656 public: 657 int16_t *mBuffer; 658 }; 659 660 OutputTrack( const wp<ThreadBase>& thread, 661 DuplicatingThread *sourceThread, 662 uint32_t sampleRate, 663 audio_format_t format, 664 uint32_t channelMask, 665 int frameCount); 666 ~OutputTrack(); 667 668 virtual status_t start(); 669 virtual void stop(); 670 bool write(int16_t* data, uint32_t frames); 671 bool bufferQueueEmpty() { return (mBufferQueue.size() == 0) ? true : false; } 672 bool isActive() { return mActive; } 673 wp<ThreadBase>& thread() { return mThread; } 674 675 private: 676 677 status_t obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs); 678 void clearBufferQueue(); 679 680 // Maximum number of pending buffers allocated by OutputTrack::write() 681 static const uint8_t kMaxOverFlowBuffers = 10; 682 683 Vector < Buffer* > mBufferQueue; 684 AudioBufferProvider::Buffer mOutBuffer; 685 bool mActive; 686 DuplicatingThread* mSourceThread; 687 }; // end of OutputTrack 688 689 PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 690 virtual ~PlaybackThread(); 691 692 virtual status_t dump(int fd, const Vector<String16>& args); 693 694 // Thread virtuals 695 virtual status_t readyToRun(); 696 virtual void onFirstRef(); 697 698 virtual status_t initCheck() const { return (mOutput == NULL) ? NO_INIT : NO_ERROR; } 699 700 virtual uint32_t latency() const; 701 702 virtual status_t setMasterVolume(float value); 703 virtual status_t setMasterMute(bool muted); 704 705 virtual float masterVolume() const; 706 virtual bool masterMute() const; 707 708 virtual status_t setStreamVolume(audio_stream_type_t stream, float value); 709 virtual status_t setStreamMute(audio_stream_type_t stream, bool muted); 710 711 virtual float streamVolume(audio_stream_type_t stream) const; 712 virtual bool streamMute(audio_stream_type_t stream) const; 713 714 sp<Track> createTrack_l( 715 const sp<AudioFlinger::Client>& client, 716 audio_stream_type_t streamType, 717 uint32_t sampleRate, 718 audio_format_t format, 719 uint32_t channelMask, 720 int frameCount, 721 const sp<IMemory>& sharedBuffer, 722 int sessionId, 723 status_t *status); 724 725 AudioStreamOut* getOutput(); 726 AudioStreamOut* clearOutput(); 727 virtual audio_stream_t* stream(); 728 729 void suspend() { mSuspended++; } 730 void restore() { if (mSuspended) mSuspended--; } 731 bool isSuspended() const { return (mSuspended != 0); } 732 virtual String8 getParameters(const String8& keys); 733 virtual void audioConfigChanged_l(int event, int param = 0); 734 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames); 735 int16_t *mixBuffer() { return mMixBuffer; }; 736 737 virtual void detachAuxEffect_l(int effectId); 738 status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track, 739 int EffectId); 740 status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track, 741 int EffectId); 742 743 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 744 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 745 virtual uint32_t hasAudioSession(int sessionId); 746 virtual uint32_t getStrategyForSession_l(int sessionId); 747 748 void setStreamValid(audio_stream_type_t streamType, bool valid); 749 750 struct stream_type_t { 751 stream_type_t() 752 : volume(1.0f), 753 mute(false), 754 valid(true) 755 { 756 } 757 float volume; 758 bool mute; 759 bool valid; 760 }; 761 762 protected: 763 int16_t* mMixBuffer; 764 int mSuspended; 765 int mBytesWritten; 766 private: 767 bool mMasterMute; 768 protected: 769 SortedVector< wp<Track> > mActiveTracks; 770 771 virtual int getTrackName_l() = 0; 772 virtual void deleteTrackName_l(int name) = 0; 773 virtual uint32_t activeSleepTimeUs(); 774 virtual uint32_t idleSleepTimeUs() = 0; 775 virtual uint32_t suspendSleepTimeUs() = 0; 776 777 private: 778 779 friend class AudioFlinger; 780 friend class OutputTrack; 781 friend class Track; 782 friend class TrackBase; 783 friend class MixerThread; 784 friend class DirectOutputThread; 785 friend class DuplicatingThread; 786 787 PlaybackThread(const Client&); 788 PlaybackThread& operator = (const PlaybackThread&); 789 790 status_t addTrack_l(const sp<Track>& track); 791 void destroyTrack_l(const sp<Track>& track); 792 void removeTrack_l(const sp<Track>& track); 793 794 void readOutputParameters(); 795 796 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 797 status_t dumpTracks(int fd, const Vector<String16>& args); 798 799 SortedVector< sp<Track> > mTracks; 800 // mStreamTypes[] uses 1 additional stream type internally for the OutputTrack used by DuplicatingThread 801 stream_type_t mStreamTypes[AUDIO_STREAM_CNT + 1]; 802 AudioStreamOut* mOutput; 803 float mMasterVolume; 804 nsecs_t mLastWriteTime; 805 int mNumWrites; 806 int mNumDelayedWrites; 807 bool mInWrite; 808 }; 809 810 class MixerThread : public PlaybackThread { 811 public: 812 MixerThread (const sp<AudioFlinger>& audioFlinger, 813 AudioStreamOut* output, 814 int id, 815 uint32_t device); 816 virtual ~MixerThread(); 817 818 // Thread virtuals 819 virtual bool threadLoop(); 820 821 void invalidateTracks(audio_stream_type_t streamType); 822 virtual bool checkForNewParameters_l(); 823 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 824 825 protected: 826 uint32_t prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, 827 Vector< sp<Track> > *tracksToRemove); 828 virtual int getTrackName_l(); 829 virtual void deleteTrackName_l(int name); 830 virtual uint32_t idleSleepTimeUs(); 831 virtual uint32_t suspendSleepTimeUs(); 832 833 AudioMixer* mAudioMixer; 834 uint32_t mPrevMixerStatus; // previous status (mixer_state) returned by 835 // prepareTracks_l() 836 }; 837 838 class DirectOutputThread : public PlaybackThread { 839 public: 840 841 DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 842 ~DirectOutputThread(); 843 844 // Thread virtuals 845 virtual bool threadLoop(); 846 847 virtual bool checkForNewParameters_l(); 848 849 protected: 850 virtual int getTrackName_l(); 851 virtual void deleteTrackName_l(int name); 852 virtual uint32_t activeSleepTimeUs(); 853 virtual uint32_t idleSleepTimeUs(); 854 virtual uint32_t suspendSleepTimeUs(); 855 856 private: 857 void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp); 858 859 float mLeftVolFloat; 860 float mRightVolFloat; 861 uint16_t mLeftVolShort; 862 uint16_t mRightVolShort; 863 }; 864 865 class DuplicatingThread : public MixerThread { 866 public: 867 DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, int id); 868 ~DuplicatingThread(); 869 870 // Thread virtuals 871 virtual bool threadLoop(); 872 void addOutputTrack(MixerThread* thread); 873 void removeOutputTrack(MixerThread* thread); 874 uint32_t waitTimeMs() { return mWaitTimeMs; } 875 protected: 876 virtual uint32_t activeSleepTimeUs(); 877 878 private: 879 bool outputsReady(SortedVector< sp<OutputTrack> > &outputTracks); 880 void updateWaitTime(); 881 882 SortedVector < sp<OutputTrack> > mOutputTracks; 883 uint32_t mWaitTimeMs; 884 }; 885 886 PlaybackThread *checkPlaybackThread_l(int output) const; 887 MixerThread *checkMixerThread_l(int output) const; 888 RecordThread *checkRecordThread_l(int input) const; 889 float streamVolumeInternal(audio_stream_type_t stream) const { return mStreamTypes[stream].volume; } 890 void audioConfigChanged_l(int event, int ioHandle, void *param2); 891 892 uint32_t nextUniqueId(); 893 status_t moveEffectChain_l(int sessionId, 894 AudioFlinger::PlaybackThread *srcThread, 895 AudioFlinger::PlaybackThread *dstThread, 896 bool reRegister); 897 PlaybackThread *primaryPlaybackThread_l(); 898 uint32_t primaryOutputDevice_l(); 899 900 friend class AudioBuffer; 901 902 class TrackHandle : public android::BnAudioTrack { 903 public: 904 TrackHandle(const sp<PlaybackThread::Track>& track); 905 virtual ~TrackHandle(); 906 virtual status_t start(); 907 virtual void stop(); 908 virtual void flush(); 909 virtual void mute(bool); 910 virtual void pause(); 911 virtual sp<IMemory> getCblk() const; 912 virtual status_t attachAuxEffect(int effectId); 913 virtual status_t onTransact( 914 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 915 private: 916 sp<PlaybackThread::Track> mTrack; 917 }; 918 919 friend class Client; 920 friend class PlaybackThread::Track; 921 922 923 void removeClient_l(pid_t pid); 924 void removeNotificationClient(pid_t pid); 925 926 927 // record thread 928 class RecordThread : public ThreadBase, public AudioBufferProvider 929 { 930 public: 931 932 // record track 933 class RecordTrack : public TrackBase { 934 public: 935 RecordTrack(const wp<ThreadBase>& thread, 936 const sp<Client>& client, 937 uint32_t sampleRate, 938 audio_format_t format, 939 uint32_t channelMask, 940 int frameCount, 941 uint32_t flags, 942 int sessionId); 943 ~RecordTrack(); 944 945 virtual status_t start(); 946 virtual void stop(); 947 948 bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; } 949 bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; } 950 951 void dump(char* buffer, size_t size); 952 953 private: 954 friend class AudioFlinger; 955 friend class RecordThread; 956 957 RecordTrack(const RecordTrack&); 958 RecordTrack& operator = (const RecordTrack&); 959 960 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 961 962 bool mOverflow; 963 }; 964 965 966 RecordThread(const sp<AudioFlinger>& audioFlinger, 967 AudioStreamIn *input, 968 uint32_t sampleRate, 969 uint32_t channels, 970 int id, 971 uint32_t device); 972 ~RecordThread(); 973 974 virtual bool threadLoop(); 975 virtual status_t readyToRun(); 976 virtual void onFirstRef(); 977 978 virtual status_t initCheck() const { return (mInput == NULL) ? NO_INIT : NO_ERROR; } 979 sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l( 980 const sp<AudioFlinger::Client>& client, 981 uint32_t sampleRate, 982 audio_format_t format, 983 int channelMask, 984 int frameCount, 985 uint32_t flags, 986 int sessionId, 987 status_t *status); 988 989 status_t start(RecordTrack* recordTrack); 990 void stop(RecordTrack* recordTrack); 991 status_t dump(int fd, const Vector<String16>& args); 992 AudioStreamIn* getInput(); 993 AudioStreamIn* clearInput(); 994 virtual audio_stream_t* stream(); 995 996 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 997 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 998 virtual bool checkForNewParameters_l(); 999 virtual String8 getParameters(const String8& keys); 1000 virtual void audioConfigChanged_l(int event, int param = 0); 1001 void readInputParameters(); 1002 virtual unsigned int getInputFramesLost(); 1003 1004 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 1005 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 1006 virtual uint32_t hasAudioSession(int sessionId); 1007 RecordTrack* track(); 1008 1009 private: 1010 RecordThread(); 1011 AudioStreamIn *mInput; 1012 RecordTrack* mTrack; 1013 sp<RecordTrack> mActiveTrack; 1014 Condition mStartStopCond; 1015 AudioResampler *mResampler; 1016 int32_t *mRsmpOutBuffer; 1017 int16_t *mRsmpInBuffer; 1018 size_t mRsmpInIndex; 1019 size_t mInputBytes; 1020 int mReqChannelCount; 1021 uint32_t mReqSampleRate; 1022 ssize_t mBytesRead; 1023 }; 1024 1025 class RecordHandle : public android::BnAudioRecord { 1026 public: 1027 RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack); 1028 virtual ~RecordHandle(); 1029 virtual status_t start(); 1030 virtual void stop(); 1031 virtual sp<IMemory> getCblk() const; 1032 virtual status_t onTransact( 1033 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 1034 private: 1035 sp<RecordThread::RecordTrack> mRecordTrack; 1036 }; 1037 1038 //--- Audio Effect Management 1039 1040 // EffectModule and EffectChain classes both have their own mutex to protect 1041 // state changes or resource modifications. Always respect the following order 1042 // if multiple mutexes must be acquired to avoid cross deadlock: 1043 // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule 1044 1045 // The EffectModule class is a wrapper object controlling the effect engine implementation 1046 // in the effect library. It prevents concurrent calls to process() and command() functions 1047 // from different client threads. It keeps a list of EffectHandle objects corresponding 1048 // to all client applications using this effect and notifies applications of effect state, 1049 // control or parameter changes. It manages the activation state machine to send appropriate 1050 // reset, enable, disable commands to effect engine and provide volume 1051 // ramping when effects are activated/deactivated. 1052 // When controlling an auxiliary effect, the EffectModule also provides an input buffer used by 1053 // the attached track(s) to accumulate their auxiliary channel. 1054 class EffectModule: public RefBase { 1055 public: 1056 EffectModule(const wp<ThreadBase>& wThread, 1057 const wp<AudioFlinger::EffectChain>& chain, 1058 effect_descriptor_t *desc, 1059 int id, 1060 int sessionId); 1061 ~EffectModule(); 1062 1063 enum effect_state { 1064 IDLE, 1065 RESTART, 1066 STARTING, 1067 ACTIVE, 1068 STOPPING, 1069 STOPPED, 1070 DESTROYED 1071 }; 1072 1073 int id() { return mId; } 1074 void process(); 1075 void updateState(); 1076 status_t command(uint32_t cmdCode, 1077 uint32_t cmdSize, 1078 void *pCmdData, 1079 uint32_t *replySize, 1080 void *pReplyData); 1081 1082 void reset_l(); 1083 status_t configure(); 1084 status_t init(); 1085 uint32_t state() { 1086 return mState; 1087 } 1088 uint32_t status() { 1089 return mStatus; 1090 } 1091 int sessionId() { 1092 return mSessionId; 1093 } 1094 status_t setEnabled(bool enabled); 1095 bool isEnabled(); 1096 bool isProcessEnabled(); 1097 1098 void setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; } 1099 int16_t *inBuffer() { return mConfig.inputCfg.buffer.s16; } 1100 void setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; } 1101 int16_t *outBuffer() { return mConfig.outputCfg.buffer.s16; } 1102 void setChain(const wp<EffectChain>& chain) { mChain = chain; } 1103 void setThread(const wp<ThreadBase>& thread) { mThread = thread; } 1104 wp<ThreadBase>& thread() { return mThread; } 1105 1106 status_t addHandle(sp<EffectHandle>& handle); 1107 void disconnect(const wp<EffectHandle>& handle, bool unpiniflast); 1108 size_t removeHandle (const wp<EffectHandle>& handle); 1109 1110 effect_descriptor_t& desc() { return mDescriptor; } 1111 wp<EffectChain>& chain() { return mChain; } 1112 1113 status_t setDevice(uint32_t device); 1114 status_t setVolume(uint32_t *left, uint32_t *right, bool controller); 1115 status_t setMode(audio_mode_t mode); 1116 status_t start(); 1117 status_t stop(); 1118 void setSuspended(bool suspended); 1119 bool suspended() const; 1120 1121 sp<EffectHandle> controlHandle(); 1122 1123 bool isPinned() { return mPinned; } 1124 void unPin() { mPinned = false; } 1125 1126 status_t dump(int fd, const Vector<String16>& args); 1127 1128 protected: 1129 friend class EffectHandle; 1130 friend class AudioFlinger; 1131 bool mPinned; 1132 1133 // Maximum time allocated to effect engines to complete the turn off sequence 1134 static const uint32_t MAX_DISABLE_TIME_MS = 10000; 1135 1136 EffectModule(const EffectModule&); 1137 EffectModule& operator = (const EffectModule&); 1138 1139 status_t start_l(); 1140 status_t stop_l(); 1141 1142mutable Mutex mLock; // mutex for process, commands and handles list protection 1143 wp<ThreadBase> mThread; // parent thread 1144 wp<EffectChain> mChain; // parent effect chain 1145 int mId; // this instance unique ID 1146 int mSessionId; // audio session ID 1147 effect_descriptor_t mDescriptor;// effect descriptor received from effect engine 1148 effect_config_t mConfig; // input and output audio configuration 1149 effect_handle_t mEffectInterface; // Effect module C API 1150 status_t mStatus; // initialization status 1151 uint32_t mState; // current activation state (effect_state) 1152 Vector< wp<EffectHandle> > mHandles; // list of client handles 1153 uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after 1154 // sending disable command. 1155 uint32_t mDisableWaitCnt; // current process() calls count during disable period. 1156 bool mSuspended; // effect is suspended: temporarily disabled by framework 1157 }; 1158 1159 // The EffectHandle class implements the IEffect interface. It provides resources 1160 // to receive parameter updates, keeps track of effect control 1161 // ownership and state and has a pointer to the EffectModule object it is controlling. 1162 // There is one EffectHandle object for each application controlling (or using) 1163 // an effect module. 1164 // The EffectHandle is obtained by calling AudioFlinger::createEffect(). 1165 class EffectHandle: public android::BnEffect { 1166 public: 1167 1168 EffectHandle(const sp<EffectModule>& effect, 1169 const sp<AudioFlinger::Client>& client, 1170 const sp<IEffectClient>& effectClient, 1171 int32_t priority); 1172 virtual ~EffectHandle(); 1173 1174 // IEffect 1175 virtual status_t enable(); 1176 virtual status_t disable(); 1177 virtual status_t command(uint32_t cmdCode, 1178 uint32_t cmdSize, 1179 void *pCmdData, 1180 uint32_t *replySize, 1181 void *pReplyData); 1182 virtual void disconnect(); 1183 virtual void disconnect(bool unpiniflast); 1184 virtual sp<IMemory> getCblk() const; 1185 virtual status_t onTransact(uint32_t code, const Parcel& data, 1186 Parcel* reply, uint32_t flags); 1187 1188 1189 // Give or take control of effect module 1190 // - hasControl: true if control is given, false if removed 1191 // - signal: true client app should be signaled of change, false otherwise 1192 // - enabled: state of the effect when control is passed 1193 void setControl(bool hasControl, bool signal, bool enabled); 1194 void commandExecuted(uint32_t cmdCode, 1195 uint32_t cmdSize, 1196 void *pCmdData, 1197 uint32_t replySize, 1198 void *pReplyData); 1199 void setEnabled(bool enabled); 1200 bool enabled() { return mEnabled; } 1201 1202 // Getters 1203 int id() { return mEffect->id(); } 1204 int priority() { return mPriority; } 1205 bool hasControl() { return mHasControl; } 1206 sp<EffectModule> effect() { return mEffect; } 1207 1208 void dump(char* buffer, size_t size); 1209 1210 protected: 1211 friend class AudioFlinger; 1212 friend class EffectModule; 1213 EffectHandle(const EffectHandle&); 1214 EffectHandle& operator =(const EffectHandle&); 1215 1216 sp<EffectModule> mEffect; // pointer to controlled EffectModule 1217 sp<IEffectClient> mEffectClient; // callback interface for client notifications 1218 sp<Client> mClient; // client for shared memory allocation 1219 sp<IMemory> mCblkMemory; // shared memory for control block 1220 effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory 1221 uint8_t* mBuffer; // pointer to parameter area in shared memory 1222 int mPriority; // client application priority to control the effect 1223 bool mHasControl; // true if this handle is controlling the effect 1224 bool mEnabled; // cached enable state: needed when the effect is 1225 // restored after being suspended 1226 }; 1227 1228 // the EffectChain class represents a group of effects associated to one audio session. 1229 // There can be any number of EffectChain objects per output mixer thread (PlaybackThread). 1230 // The EffecChain with session ID 0 contains global effects applied to the output mix. 1231 // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks) 1232 // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding 1233 // in the effect process order. When attached to a track (session ID != 0), it also provide it's own 1234 // input buffer used by the track as accumulation buffer. 1235 class EffectChain: public RefBase { 1236 public: 1237 EffectChain(const wp<ThreadBase>& wThread, int sessionId); 1238 ~EffectChain(); 1239 1240 // special key used for an entry in mSuspendedEffects keyed vector 1241 // corresponding to a suspend all request. 1242 static const int kKeyForSuspendAll = 0; 1243 1244 // minimum duration during which we force calling effect process when last track on 1245 // a session is stopped or removed to allow effect tail to be rendered 1246 static const int kProcessTailDurationMs = 1000; 1247 1248 void process_l(); 1249 1250 void lock() { 1251 mLock.lock(); 1252 } 1253 void unlock() { 1254 mLock.unlock(); 1255 } 1256 1257 status_t addEffect_l(const sp<EffectModule>& handle); 1258 size_t removeEffect_l(const sp<EffectModule>& handle); 1259 1260 int sessionId() { return mSessionId; } 1261 void setSessionId(int sessionId) { mSessionId = sessionId; } 1262 1263 sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor); 1264 sp<EffectModule> getEffectFromId_l(int id); 1265 sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type); 1266 bool setVolume_l(uint32_t *left, uint32_t *right); 1267 void setDevice_l(uint32_t device); 1268 void setMode_l(audio_mode_t mode); 1269 1270 void setInBuffer(int16_t *buffer, bool ownsBuffer = false) { 1271 mInBuffer = buffer; 1272 mOwnInBuffer = ownsBuffer; 1273 } 1274 int16_t *inBuffer() { 1275 return mInBuffer; 1276 } 1277 void setOutBuffer(int16_t *buffer) { 1278 mOutBuffer = buffer; 1279 } 1280 int16_t *outBuffer() { 1281 return mOutBuffer; 1282 } 1283 1284 void incTrackCnt() { android_atomic_inc(&mTrackCnt); } 1285 void decTrackCnt() { android_atomic_dec(&mTrackCnt); } 1286 int32_t trackCnt() { return mTrackCnt;} 1287 1288 void incActiveTrackCnt() { android_atomic_inc(&mActiveTrackCnt); 1289 mTailBufferCount = mMaxTailBuffers; } 1290 void decActiveTrackCnt() { android_atomic_dec(&mActiveTrackCnt); } 1291 int32_t activeTrackCnt() { return mActiveTrackCnt;} 1292 1293 uint32_t strategy() { return mStrategy; } 1294 void setStrategy(uint32_t strategy) 1295 { mStrategy = strategy; } 1296 1297 // suspend effect of the given type 1298 void setEffectSuspended_l(const effect_uuid_t *type, 1299 bool suspend); 1300 // suspend all eligible effects 1301 void setEffectSuspendedAll_l(bool suspend); 1302 // check if effects should be suspend or restored when a given effect is enable or disabled 1303 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 1304 bool enabled); 1305 1306 status_t dump(int fd, const Vector<String16>& args); 1307 1308 protected: 1309 friend class AudioFlinger; 1310 EffectChain(const EffectChain&); 1311 EffectChain& operator =(const EffectChain&); 1312 1313 class SuspendedEffectDesc : public RefBase { 1314 public: 1315 SuspendedEffectDesc() : mRefCount(0) {} 1316 1317 int mRefCount; 1318 effect_uuid_t mType; 1319 wp<EffectModule> mEffect; 1320 }; 1321 1322 // get a list of effect modules to suspend when an effect of the type 1323 // passed is enabled. 1324 Vector< sp<EffectModule> > getSuspendEligibleEffects(); 1325 // get an effect module if it is currently enable 1326 sp<EffectModule> getEffectIfEnabled(const effect_uuid_t *type); 1327 // true if the effect whose descriptor is passed can be suspended 1328 // OEMs can modify the rules implemented in this method to exclude specific effect 1329 // types or implementations from the suspend/restore mechanism. 1330 bool isEffectEligibleForSuspend(const effect_descriptor_t& desc); 1331 1332 wp<ThreadBase> mThread; // parent mixer thread 1333 Mutex mLock; // mutex protecting effect list 1334 Vector<sp<EffectModule> > mEffects; // list of effect modules 1335 int mSessionId; // audio session ID 1336 int16_t *mInBuffer; // chain input buffer 1337 int16_t *mOutBuffer; // chain output buffer 1338 volatile int32_t mActiveTrackCnt; // number of active tracks connected 1339 volatile int32_t mTrackCnt; // number of tracks connected 1340 int32_t mTailBufferCount; // current effect tail buffer count 1341 int32_t mMaxTailBuffers; // maximum effect tail buffers 1342 bool mOwnInBuffer; // true if the chain owns its input buffer 1343 int mVolumeCtrlIdx; // index of insert effect having control over volume 1344 uint32_t mLeftVolume; // previous volume on left channel 1345 uint32_t mRightVolume; // previous volume on right channel 1346 uint32_t mNewLeftVolume; // new volume on left channel 1347 uint32_t mNewRightVolume; // new volume on right channel 1348 uint32_t mStrategy; // strategy for this effect chain 1349 // mSuspendedEffects lists all effect currently suspended in the chain 1350 // use effect type UUID timelow field as key. There is no real risk of identical 1351 // timeLow fields among effect type UUIDs. 1352 KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects; 1353 }; 1354 1355 struct AudioStreamOut { 1356 audio_hw_device_t *hwDev; 1357 audio_stream_out_t *stream; 1358 1359 AudioStreamOut(audio_hw_device_t *dev, audio_stream_out_t *out) : 1360 hwDev(dev), stream(out) {} 1361 }; 1362 1363 struct AudioStreamIn { 1364 audio_hw_device_t *hwDev; 1365 audio_stream_in_t *stream; 1366 1367 AudioStreamIn(audio_hw_device_t *dev, audio_stream_in_t *in) : 1368 hwDev(dev), stream(in) {} 1369 }; 1370 1371 struct AudioSessionRef { 1372 int sessionid; 1373 pid_t pid; 1374 int cnt; 1375 }; 1376 1377 friend class RecordThread; 1378 friend class PlaybackThread; 1379 1380 mutable Mutex mLock; 1381 1382 DefaultKeyedVector< pid_t, wp<Client> > mClients; 1383 1384 mutable Mutex mHardwareLock; 1385 audio_hw_device_t* mPrimaryHardwareDev; 1386 Vector<audio_hw_device_t*> mAudioHwDevs; 1387 mutable hardware_call_state mHardwareStatus; // for dump only 1388 1389 1390 DefaultKeyedVector< int, sp<PlaybackThread> > mPlaybackThreads; 1391 PlaybackThread::stream_type_t mStreamTypes[AUDIO_STREAM_CNT]; 1392 1393 // both are protected by mLock 1394 float mMasterVolume; 1395 bool mMasterMute; 1396 1397 DefaultKeyedVector< int, sp<RecordThread> > mRecordThreads; 1398 1399 DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients; 1400 volatile int32_t mNextUniqueId; 1401 audio_mode_t mMode; 1402 bool mBtNrecIsOff; 1403 1404 Vector<AudioSessionRef*> mAudioSessionRefs; 1405 1406 float masterVolume_l() const { return mMasterVolume; } 1407 bool masterMute_l() const { return mMasterMute; } 1408}; 1409 1410 1411// ---------------------------------------------------------------------------- 1412 1413}; // namespace android 1414 1415#endif // ANDROID_AUDIO_FLINGER_H 1416