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