AudioFlinger.h revision de070137f11d346fba77605bd76a44c040a618fc
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 44namespace android { 45 46class audio_track_cblk_t; 47class effect_param_cblk_t; 48class AudioMixer; 49class AudioBuffer; 50class 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 61static const nsecs_t kStandbyTimeInNsecs = seconds(3); 62 63class AudioFlinger : 64 public BinderService<AudioFlinger>, 65 public BnAudioFlinger 66{ 67 friend class BinderService<AudioFlinger>; 68public: 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 212private: 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 }; // end of Track 518 519 520 // playback track 521 class OutputTrack : public Track { 522 public: 523 524 class Buffer: public AudioBufferProvider::Buffer { 525 public: 526 int16_t *mBuffer; 527 }; 528 529 OutputTrack( const wp<ThreadBase>& thread, 530 DuplicatingThread *sourceThread, 531 uint32_t sampleRate, 532 int format, 533 int channelCount, 534 int frameCount); 535 ~OutputTrack(); 536 537 virtual status_t start(); 538 virtual void stop(); 539 bool write(int16_t* data, uint32_t frames); 540 bool bufferQueueEmpty() { return (mBufferQueue.size() == 0) ? true : false; } 541 bool isActive() { return mActive; } 542 wp<ThreadBase>& thread() { return mThread; } 543 544 private: 545 546 status_t obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs); 547 void clearBufferQueue(); 548 549 // Maximum number of pending buffers allocated by OutputTrack::write() 550 static const uint8_t kMaxOverFlowBuffers = 10; 551 552 Vector < Buffer* > mBufferQueue; 553 AudioBufferProvider::Buffer mOutBuffer; 554 bool mActive; 555 DuplicatingThread* mSourceThread; 556 }; // end of OutputTrack 557 558 PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 559 virtual ~PlaybackThread(); 560 561 virtual status_t dump(int fd, const Vector<String16>& args); 562 563 // Thread virtuals 564 virtual status_t readyToRun(); 565 virtual void onFirstRef(); 566 567 virtual uint32_t latency() const; 568 569 virtual status_t setMasterVolume(float value); 570 virtual status_t setMasterMute(bool muted); 571 572 virtual float masterVolume() const; 573 virtual bool masterMute() const; 574 575 virtual status_t setStreamVolume(int stream, float value); 576 virtual status_t setStreamMute(int stream, bool muted); 577 578 virtual float streamVolume(int stream) const; 579 virtual bool streamMute(int stream) const; 580 581 bool isStreamActive(int stream) const; 582 583 sp<Track> createTrack_l( 584 const sp<AudioFlinger::Client>& client, 585 int streamType, 586 uint32_t sampleRate, 587 int format, 588 int channelCount, 589 int frameCount, 590 const sp<IMemory>& sharedBuffer, 591 int sessionId, 592 status_t *status); 593 594 AudioStreamOut* getOutput() { return mOutput; } 595 596 virtual int type() const { return mType; } 597 void suspend() { mSuspended++; } 598 void restore() { if (mSuspended) mSuspended--; } 599 bool isSuspended() { return (mSuspended != 0); } 600 virtual String8 getParameters(const String8& keys); 601 virtual void audioConfigChanged_l(int event, int param = 0); 602 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames); 603 int16_t *mixBuffer() { return mMixBuffer; }; 604 605 sp<EffectHandle> createEffect_l( 606 const sp<AudioFlinger::Client>& client, 607 const sp<IEffectClient>& effectClient, 608 int32_t priority, 609 int sessionId, 610 effect_descriptor_t *desc, 611 int *enabled, 612 status_t *status); 613 void disconnectEffect(const sp< EffectModule>& effect, 614 const wp<EffectHandle>& handle); 615 616 bool hasAudioSession(int sessionId); 617 sp<EffectChain> getEffectChain(int sessionId); 618 sp<EffectChain> getEffectChain_l(int sessionId); 619 status_t addEffectChain_l(const sp<EffectChain>& chain); 620 size_t removeEffectChain_l(const sp<EffectChain>& chain); 621 void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains); 622 void unlockEffectChains(Vector<sp <EffectChain> >& effectChains); 623 624 sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId); 625 void detachAuxEffect_l(int effectId); 626 status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track, 627 int EffectId); 628 status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track, 629 int EffectId); 630 void setMode(uint32_t mode); 631 632 status_t addEffect_l(const sp< EffectModule>& effect); 633 void removeEffect_l(const sp< EffectModule>& effect); 634 635 uint32_t getStrategyForSession_l(int sessionId); 636 637 struct stream_type_t { 638 stream_type_t() 639 : volume(1.0f), 640 mute(false) 641 { 642 } 643 float volume; 644 bool mute; 645 }; 646 647 protected: 648 int mType; 649 int16_t* mMixBuffer; 650 int mSuspended; 651 int mBytesWritten; 652 bool mMasterMute; 653 SortedVector< wp<Track> > mActiveTracks; 654 655 virtual int getTrackName_l() = 0; 656 virtual void deleteTrackName_l(int name) = 0; 657 virtual uint32_t activeSleepTimeUs() = 0; 658 virtual uint32_t idleSleepTimeUs() = 0; 659 660 private: 661 662 friend class AudioFlinger; 663 friend class OutputTrack; 664 friend class Track; 665 friend class TrackBase; 666 friend class MixerThread; 667 friend class DirectOutputThread; 668 friend class DuplicatingThread; 669 670 PlaybackThread(const Client&); 671 PlaybackThread& operator = (const PlaybackThread&); 672 673 status_t addTrack_l(const sp<Track>& track); 674 void destroyTrack_l(const sp<Track>& track); 675 676 void readOutputParameters(); 677 678 uint32_t device() { return mDevice; } 679 680 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 681 status_t dumpTracks(int fd, const Vector<String16>& args); 682 status_t dumpEffectChains(int fd, const Vector<String16>& args); 683 684 SortedVector< sp<Track> > mTracks; 685 // mStreamTypes[] uses 1 additionnal stream type internally for the OutputTrack used by DuplicatingThread 686 stream_type_t mStreamTypes[AudioSystem::NUM_STREAM_TYPES + 1]; 687 AudioStreamOut* mOutput; 688 float mMasterVolume; 689 nsecs_t mLastWriteTime; 690 int mNumWrites; 691 int mNumDelayedWrites; 692 bool mInWrite; 693 Vector< sp<EffectChain> > mEffectChains; 694 uint32_t mDevice; 695 }; 696 697 class MixerThread : public PlaybackThread { 698 public: 699 MixerThread (const sp<AudioFlinger>& audioFlinger, 700 AudioStreamOut* output, 701 int id, 702 uint32_t device); 703 virtual ~MixerThread(); 704 705 // Thread virtuals 706 virtual bool threadLoop(); 707 708 void invalidateTracks(int streamType); 709 virtual bool checkForNewParameters_l(); 710 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 711 712 protected: 713 uint32_t prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, 714 Vector< sp<Track> > *tracksToRemove); 715 virtual int getTrackName_l(); 716 virtual void deleteTrackName_l(int name); 717 virtual uint32_t activeSleepTimeUs(); 718 virtual uint32_t idleSleepTimeUs(); 719 720 AudioMixer* mAudioMixer; 721 }; 722 723 class DirectOutputThread : public PlaybackThread { 724 public: 725 726 DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 727 ~DirectOutputThread(); 728 729 // Thread virtuals 730 virtual bool threadLoop(); 731 732 virtual bool checkForNewParameters_l(); 733 734 protected: 735 virtual int getTrackName_l(); 736 virtual void deleteTrackName_l(int name); 737 virtual uint32_t activeSleepTimeUs(); 738 virtual uint32_t idleSleepTimeUs(); 739 740 private: 741 void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp); 742 743 float mLeftVolFloat; 744 float mRightVolFloat; 745 uint16_t mLeftVolShort; 746 uint16_t mRightVolShort; 747 }; 748 749 class DuplicatingThread : public MixerThread { 750 public: 751 DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, int id); 752 ~DuplicatingThread(); 753 754 // Thread virtuals 755 virtual bool threadLoop(); 756 void addOutputTrack(MixerThread* thread); 757 void removeOutputTrack(MixerThread* thread); 758 uint32_t waitTimeMs() { return mWaitTimeMs; } 759 protected: 760 virtual uint32_t activeSleepTimeUs(); 761 762 private: 763 bool outputsReady(SortedVector< sp<OutputTrack> > &outputTracks); 764 void updateWaitTime(); 765 766 SortedVector < sp<OutputTrack> > mOutputTracks; 767 uint32_t mWaitTimeMs; 768 }; 769 770 PlaybackThread *checkPlaybackThread_l(int output) const; 771 MixerThread *checkMixerThread_l(int output) const; 772 RecordThread *checkRecordThread_l(int input) const; 773 float streamVolumeInternal(int stream) const { return mStreamTypes[stream].volume; } 774 void audioConfigChanged_l(int event, int ioHandle, void *param2); 775 776 int nextUniqueId(); 777 status_t moveEffectChain_l(int session, 778 AudioFlinger::PlaybackThread *srcThread, 779 AudioFlinger::PlaybackThread *dstThread); 780 781 friend class AudioBuffer; 782 783 class TrackHandle : public android::BnAudioTrack { 784 public: 785 TrackHandle(const sp<PlaybackThread::Track>& track); 786 virtual ~TrackHandle(); 787 virtual status_t start(); 788 virtual void stop(); 789 virtual void flush(); 790 virtual void mute(bool); 791 virtual void pause(); 792 virtual void setVolume(float left, float right); 793 virtual sp<IMemory> getCblk() const; 794 virtual status_t attachAuxEffect(int effectId); 795 virtual status_t onTransact( 796 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 797 private: 798 sp<PlaybackThread::Track> mTrack; 799 }; 800 801 friend class Client; 802 friend class PlaybackThread::Track; 803 804 805 void removeClient_l(pid_t pid); 806 void removeNotificationClient(pid_t pid); 807 808 809 // record thread 810 class RecordThread : public ThreadBase, public AudioBufferProvider 811 { 812 public: 813 814 // record track 815 class RecordTrack : public TrackBase { 816 public: 817 RecordTrack(const wp<ThreadBase>& thread, 818 const sp<Client>& client, 819 uint32_t sampleRate, 820 int format, 821 int channelCount, 822 int frameCount, 823 uint32_t flags, 824 int sessionId); 825 ~RecordTrack(); 826 827 virtual status_t start(); 828 virtual void stop(); 829 830 bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; } 831 bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; } 832 833 void dump(char* buffer, size_t size); 834 private: 835 friend class AudioFlinger; 836 friend class RecordThread; 837 838 RecordTrack(const RecordTrack&); 839 RecordTrack& operator = (const RecordTrack&); 840 841 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 842 843 bool mOverflow; 844 }; 845 846 847 RecordThread(const sp<AudioFlinger>& audioFlinger, 848 AudioStreamIn *input, 849 uint32_t sampleRate, 850 uint32_t channels, 851 int id); 852 ~RecordThread(); 853 854 virtual bool threadLoop(); 855 virtual status_t readyToRun() { return NO_ERROR; } 856 virtual void onFirstRef(); 857 858 status_t start(RecordTrack* recordTrack); 859 void stop(RecordTrack* recordTrack); 860 status_t dump(int fd, const Vector<String16>& args); 861 AudioStreamIn* getInput() { return mInput; } 862 863 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 864 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 865 virtual bool checkForNewParameters_l(); 866 virtual String8 getParameters(const String8& keys); 867 virtual void audioConfigChanged_l(int event, int param = 0); 868 void readInputParameters(); 869 virtual unsigned int getInputFramesLost(); 870 871 private: 872 RecordThread(); 873 AudioStreamIn *mInput; 874 sp<RecordTrack> mActiveTrack; 875 Condition mStartStopCond; 876 AudioResampler *mResampler; 877 int32_t *mRsmpOutBuffer; 878 int16_t *mRsmpInBuffer; 879 size_t mRsmpInIndex; 880 size_t mInputBytes; 881 int mReqChannelCount; 882 uint32_t mReqSampleRate; 883 ssize_t mBytesRead; 884 }; 885 886 class RecordHandle : public android::BnAudioRecord { 887 public: 888 RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack); 889 virtual ~RecordHandle(); 890 virtual status_t start(); 891 virtual void stop(); 892 virtual sp<IMemory> getCblk() const; 893 virtual status_t onTransact( 894 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 895 private: 896 sp<RecordThread::RecordTrack> mRecordTrack; 897 }; 898 899 //--- Audio Effect Management 900 901 // EffectModule and EffectChain classes both have their own mutex to protect 902 // state changes or resource modifications. Always respect the following order 903 // if multiple mutexes must be acquired to avoid cross deadlock: 904 // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule 905 906 // The EffectModule class is a wrapper object controlling the effect engine implementation 907 // in the effect library. It prevents concurrent calls to process() and command() functions 908 // from different client threads. It keeps a list of EffectHandle objects corresponding 909 // to all client applications using this effect and notifies applications of effect state, 910 // control or parameter changes. It manages the activation state machine to send appropriate 911 // reset, enable, disable commands to effect engine and provide volume 912 // ramping when effects are activated/deactivated. 913 // When controlling an auxiliary effect, the EffectModule also provides an input buffer used by 914 // the attached track(s) to accumulate their auxiliary channel. 915 class EffectModule: public RefBase { 916 public: 917 EffectModule(const wp<ThreadBase>& wThread, 918 const wp<AudioFlinger::EffectChain>& chain, 919 effect_descriptor_t *desc, 920 int id, 921 int sessionId); 922 ~EffectModule(); 923 924 enum effect_state { 925 IDLE, 926 RESTART, 927 STARTING, 928 ACTIVE, 929 STOPPING, 930 STOPPED 931 }; 932 933 int id() { return mId; } 934 void process(); 935 void updateState(); 936 status_t command(int cmdCode, int cmdSize, void *pCmdData, int *replySize, void *pReplyData); 937 938 void reset_l(); 939 status_t configure(); 940 status_t init(); 941 uint32_t state() { 942 return mState; 943 } 944 uint32_t status() { 945 return mStatus; 946 } 947 int sessionId() { 948 return mSessionId; 949 } 950 status_t setEnabled(bool enabled); 951 bool isEnabled(); 952 953 void setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; } 954 int16_t *inBuffer() { return mConfig.inputCfg.buffer.s16; } 955 void setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; } 956 int16_t *outBuffer() { return mConfig.outputCfg.buffer.s16; } 957 void setChain(const wp<EffectChain>& chain) { mChain = chain; } 958 void setThread(const wp<ThreadBase>& thread) { mThread = thread; } 959 960 status_t addHandle(sp<EffectHandle>& handle); 961 void disconnect(const wp<EffectHandle>& handle); 962 size_t removeHandle (const wp<EffectHandle>& handle); 963 964 effect_descriptor_t& desc() { return mDescriptor; } 965 wp<EffectChain>& chain() { return mChain; } 966 967 status_t setDevice(uint32_t device); 968 status_t setVolume(uint32_t *left, uint32_t *right, bool controller); 969 status_t setMode(uint32_t mode); 970 971 status_t dump(int fd, const Vector<String16>& args); 972 973 protected: 974 975 // Maximum time allocated to effect engines to complete the turn off sequence 976 static const uint32_t MAX_DISABLE_TIME_MS = 10000; 977 978 EffectModule(const EffectModule&); 979 EffectModule& operator = (const EffectModule&); 980 981 status_t start_l(); 982 status_t stop_l(); 983 984 // update this table when AudioSystem::audio_devices or audio_device_e (in EffectApi.h) are modified 985 static const uint32_t sDeviceConvTable[]; 986 static uint32_t deviceAudioSystemToEffectApi(uint32_t device); 987 988 // update this table when AudioSystem::audio_mode or audio_mode_e (in EffectApi.h) are modified 989 static const uint32_t sModeConvTable[]; 990 static int modeAudioSystemToEffectApi(uint32_t mode); 991 992 Mutex mLock; // mutex for process, commands and handles list protection 993 wp<ThreadBase> mThread; // parent thread 994 wp<EffectChain> mChain; // parent effect chain 995 int mId; // this instance unique ID 996 int mSessionId; // audio session ID 997 effect_descriptor_t mDescriptor;// effect descriptor received from effect engine 998 effect_config_t mConfig; // input and output audio configuration 999 effect_interface_t mEffectInterface; // Effect module C API 1000 status_t mStatus; // initialization status 1001 uint32_t mState; // current activation state (effect_state) 1002 Vector< wp<EffectHandle> > mHandles; // list of client handles 1003 uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after 1004 // sending disable command. 1005 uint32_t mDisableWaitCnt; // current process() calls count during disable period. 1006 }; 1007 1008 // The EffectHandle class implements the IEffect interface. It provides resources 1009 // to receive parameter updates, keeps track of effect control 1010 // ownership and state and has a pointer to the EffectModule object it is controlling. 1011 // There is one EffectHandle object for each application controlling (or using) 1012 // an effect module. 1013 // The EffectHandle is obtained by calling AudioFlinger::createEffect(). 1014 class EffectHandle: public android::BnEffect { 1015 public: 1016 1017 EffectHandle(const sp<EffectModule>& effect, 1018 const sp<AudioFlinger::Client>& client, 1019 const sp<IEffectClient>& effectClient, 1020 int32_t priority); 1021 virtual ~EffectHandle(); 1022 1023 // IEffect 1024 virtual status_t enable(); 1025 virtual status_t disable(); 1026 virtual status_t command(int cmdCode, int cmdSize, void *pCmdData, int *replySize, void *pReplyData); 1027 virtual void disconnect(); 1028 virtual sp<IMemory> getCblk() const; 1029 virtual status_t onTransact(uint32_t code, const Parcel& data, 1030 Parcel* reply, uint32_t flags); 1031 1032 1033 // Give or take control of effect module 1034 void setControl(bool hasControl, bool signal); 1035 void commandExecuted(int cmdCode, int cmdSize, void *pCmdData, int replySize, void *pReplyData); 1036 void setEnabled(bool enabled); 1037 1038 // Getters 1039 int id() { return mEffect->id(); } 1040 int priority() { return mPriority; } 1041 bool hasControl() { return mHasControl; } 1042 sp<EffectModule> effect() { return mEffect; } 1043 1044 void dump(char* buffer, size_t size); 1045 1046 protected: 1047 1048 EffectHandle(const EffectHandle&); 1049 EffectHandle& operator =(const EffectHandle&); 1050 1051 sp<EffectModule> mEffect; // pointer to controlled EffectModule 1052 sp<IEffectClient> mEffectClient; // callback interface for client notifications 1053 sp<Client> mClient; // client for shared memory allocation 1054 sp<IMemory> mCblkMemory; // shared memory for control block 1055 effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory 1056 uint8_t* mBuffer; // pointer to parameter area in shared memory 1057 int mPriority; // client application priority to control the effect 1058 bool mHasControl; // true if this handle is controlling the effect 1059 }; 1060 1061 // the EffectChain class represents a group of effects associated to one audio session. 1062 // There can be any number of EffectChain objects per output mixer thread (PlaybackThread). 1063 // The EffecChain with session ID 0 contains global effects applied to the output mix. 1064 // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks) 1065 // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding 1066 // in the effect process order. When attached to a track (session ID != 0), it also provide it's own 1067 // input buffer used by the track as accumulation buffer. 1068 class EffectChain: public RefBase { 1069 public: 1070 EffectChain(const wp<ThreadBase>& wThread, int sessionId); 1071 ~EffectChain(); 1072 1073 void process_l(); 1074 1075 void lock() { 1076 mLock.lock(); 1077 } 1078 void unlock() { 1079 mLock.unlock(); 1080 } 1081 1082 status_t addEffect_l(const sp<EffectModule>& handle); 1083 size_t removeEffect_l(const sp<EffectModule>& handle); 1084 1085 int sessionId() { 1086 return mSessionId; 1087 } 1088 1089 sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor); 1090 sp<EffectModule> getEffectFromId_l(int id); 1091 bool setVolume_l(uint32_t *left, uint32_t *right); 1092 void setDevice_l(uint32_t device); 1093 void setMode_l(uint32_t mode); 1094 1095 void setInBuffer(int16_t *buffer, bool ownsBuffer = false) { 1096 mInBuffer = buffer; 1097 mOwnInBuffer = ownsBuffer; 1098 } 1099 int16_t *inBuffer() { 1100 return mInBuffer; 1101 } 1102 void setOutBuffer(int16_t *buffer) { 1103 mOutBuffer = buffer; 1104 } 1105 int16_t *outBuffer() { 1106 return mOutBuffer; 1107 } 1108 1109 void startTrack() {mActiveTrackCnt++;} 1110 void stopTrack() {mActiveTrackCnt--;} 1111 int activeTracks() { return mActiveTrackCnt;} 1112 1113 uint32_t strategy() { return mStrategy; } 1114 void setStrategy(uint32_t strategy) 1115 { mStrategy = strategy; } 1116 1117 status_t dump(int fd, const Vector<String16>& args); 1118 1119 protected: 1120 1121 EffectChain(const EffectChain&); 1122 EffectChain& operator =(const EffectChain&); 1123 1124 wp<ThreadBase> mThread; // parent mixer thread 1125 Mutex mLock; // mutex protecting effect list 1126 Vector<sp<EffectModule> > mEffects; // list of effect modules 1127 int mSessionId; // audio session ID 1128 int16_t *mInBuffer; // chain input buffer 1129 int16_t *mOutBuffer; // chain output buffer 1130 int mActiveTrackCnt; // number of active tracks connected 1131 bool mOwnInBuffer; // true if the chain owns its input buffer 1132 int mVolumeCtrlIdx; // index of insert effect having control over volume 1133 uint32_t mLeftVolume; // previous volume on left channel 1134 uint32_t mRightVolume; // previous volume on right channel 1135 uint32_t mNewLeftVolume; // new volume on left channel 1136 uint32_t mNewRightVolume; // new volume on right channel 1137 uint32_t mStrategy; // strategy for this effect chain 1138 }; 1139 1140 friend class RecordThread; 1141 friend class PlaybackThread; 1142 1143 1144 mutable Mutex mLock; 1145 1146 DefaultKeyedVector< pid_t, wp<Client> > mClients; 1147 1148 mutable Mutex mHardwareLock; 1149 AudioHardwareInterface* mAudioHardware; 1150 mutable int mHardwareStatus; 1151 1152 1153 DefaultKeyedVector< int, sp<PlaybackThread> > mPlaybackThreads; 1154 PlaybackThread::stream_type_t mStreamTypes[AudioSystem::NUM_STREAM_TYPES]; 1155 float mMasterVolume; 1156 bool mMasterMute; 1157 1158 DefaultKeyedVector< int, sp<RecordThread> > mRecordThreads; 1159 1160 DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients; 1161 volatile int32_t mNextUniqueId; 1162#ifdef LVMX 1163 int mLifeVibesClientPid; 1164#endif 1165 uint32_t mMode; 1166 1167}; 1168 1169// ---------------------------------------------------------------------------- 1170 1171}; // namespace android 1172 1173#endif // ANDROID_AUDIO_FLINGER_H 1174