AudioFlinger.h revision db7c079f284f6e91266f6653ae0ec198b1c5006e
1/* //device/include/server/AudioFlinger/AudioFlinger.h 2** 3** Copyright 2007, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18#ifndef ANDROID_AUDIO_FLINGER_H 19#define ANDROID_AUDIO_FLINGER_H 20 21#include <stdint.h> 22#include <sys/types.h> 23#include <limits.h> 24 25#include <media/IAudioFlinger.h> 26#include <media/IAudioFlingerClient.h> 27#include <media/IAudioTrack.h> 28#include <media/IAudioRecord.h> 29#include <media/AudioTrack.h> 30 31#include <utils/Atomic.h> 32#include <utils/Errors.h> 33#include <utils/threads.h> 34#include <utils/SortedVector.h> 35#include <utils/TypeHelpers.h> 36#include <utils/Vector.h> 37 38#include <binder/BinderService.h> 39#include <binder/MemoryDealer.h> 40 41#include <system/audio.h> 42#include <hardware/audio.h> 43 44#include "AudioBufferProvider.h" 45 46#include <powermanager/IPowerManager.h> 47 48namespace android { 49 50class audio_track_cblk_t; 51class effect_param_cblk_t; 52class AudioMixer; 53class AudioBuffer; 54class AudioResampler; 55 56// ---------------------------------------------------------------------------- 57 58#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true )) 59#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false )) 60 61 62// ---------------------------------------------------------------------------- 63 64static const nsecs_t kStandbyTimeInNsecs = seconds(3); 65 66class AudioFlinger : 67 public BinderService<AudioFlinger>, 68 public BnAudioFlinger 69{ 70 friend class BinderService<AudioFlinger>; 71public: 72 static char const* getServiceName() { return "media.audio_flinger"; } 73 74 virtual status_t dump(int fd, const Vector<String16>& args); 75 76 // IAudioFlinger interface 77 virtual sp<IAudioTrack> createTrack( 78 pid_t pid, 79 int streamType, 80 uint32_t sampleRate, 81 uint32_t format, 82 uint32_t channelMask, 83 int frameCount, 84 uint32_t flags, 85 const sp<IMemory>& sharedBuffer, 86 int output, 87 int *sessionId, 88 status_t *status); 89 90 virtual uint32_t sampleRate(int output) const; 91 virtual int channelCount(int output) const; 92 virtual uint32_t format(int output) const; 93 virtual size_t frameCount(int output) const; 94 virtual uint32_t latency(int output) const; 95 96 virtual status_t setMasterVolume(float value); 97 virtual status_t setMasterMute(bool muted); 98 99 virtual float masterVolume() const; 100 virtual bool masterMute() const; 101 102 virtual status_t setStreamVolume(int stream, float value, int output); 103 virtual status_t setStreamMute(int stream, bool muted); 104 105 virtual float streamVolume(int stream, int output) const; 106 virtual bool streamMute(int stream) const; 107 108 virtual status_t setMode(int mode); 109 110 virtual status_t setMicMute(bool state); 111 virtual bool getMicMute() const; 112 113 virtual status_t setParameters(int ioHandle, const String8& keyValuePairs); 114 virtual String8 getParameters(int ioHandle, const String8& keys); 115 116 virtual void registerClient(const sp<IAudioFlingerClient>& client); 117 118 virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount); 119 virtual unsigned int getInputFramesLost(int ioHandle); 120 121 virtual int openOutput(uint32_t *pDevices, 122 uint32_t *pSamplingRate, 123 uint32_t *pFormat, 124 uint32_t *pChannels, 125 uint32_t *pLatencyMs, 126 uint32_t flags); 127 128 virtual int openDuplicateOutput(int output1, int output2); 129 130 virtual status_t closeOutput(int output); 131 132 virtual status_t suspendOutput(int output); 133 134 virtual status_t restoreOutput(int output); 135 136 virtual int openInput(uint32_t *pDevices, 137 uint32_t *pSamplingRate, 138 uint32_t *pFormat, 139 uint32_t *pChannels, 140 uint32_t acoustics); 141 142 virtual status_t closeInput(int input); 143 144 virtual status_t setStreamOutput(uint32_t stream, int output); 145 146 virtual status_t setVoiceVolume(float volume); 147 148 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output); 149 150 virtual int newAudioSessionId(); 151 152 virtual void acquireAudioSessionId(int audioSession); 153 154 virtual void releaseAudioSessionId(int audioSession); 155 156 virtual status_t queryNumberEffects(uint32_t *numEffects); 157 158 virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor); 159 160 virtual status_t getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor); 161 162 virtual sp<IEffect> createEffect(pid_t pid, 163 effect_descriptor_t *pDesc, 164 const sp<IEffectClient>& effectClient, 165 int32_t priority, 166 int io, 167 int sessionId, 168 status_t *status, 169 int *id, 170 int *enabled); 171 172 virtual status_t moveEffects(int sessionId, int srcOutput, int dstOutput); 173 174 enum hardware_call_state { 175 AUDIO_HW_IDLE = 0, 176 AUDIO_HW_INIT, 177 AUDIO_HW_OUTPUT_OPEN, 178 AUDIO_HW_OUTPUT_CLOSE, 179 AUDIO_HW_INPUT_OPEN, 180 AUDIO_HW_INPUT_CLOSE, 181 AUDIO_HW_STANDBY, 182 AUDIO_HW_SET_MASTER_VOLUME, 183 AUDIO_HW_GET_ROUTING, 184 AUDIO_HW_SET_ROUTING, 185 AUDIO_HW_GET_MODE, 186 AUDIO_HW_SET_MODE, 187 AUDIO_HW_GET_MIC_MUTE, 188 AUDIO_HW_SET_MIC_MUTE, 189 AUDIO_SET_VOICE_VOLUME, 190 AUDIO_SET_PARAMETER, 191 }; 192 193 // record interface 194 virtual sp<IAudioRecord> openRecord( 195 pid_t pid, 196 int input, 197 uint32_t sampleRate, 198 uint32_t format, 199 uint32_t channelMask, 200 int frameCount, 201 uint32_t flags, 202 int *sessionId, 203 status_t *status); 204 205 virtual status_t onTransact( 206 uint32_t code, 207 const Parcel& data, 208 Parcel* reply, 209 uint32_t flags); 210 211 uint32_t getMode() { return mMode; } 212 213 bool btNrec() { return mBtNrec; } 214 215private: 216 AudioFlinger(); 217 virtual ~AudioFlinger(); 218 219 status_t initCheck() const; 220 virtual void onFirstRef(); 221 audio_hw_device_t* findSuitableHwDev_l(uint32_t devices); 222 void purgeStaleEffects_l(); 223 224 // Internal dump utilites. 225 status_t dumpPermissionDenial(int fd, const Vector<String16>& args); 226 status_t dumpClients(int fd, const Vector<String16>& args); 227 status_t dumpInternals(int fd, const Vector<String16>& args); 228 229 // --- Client --- 230 class Client : public RefBase { 231 public: 232 Client(const sp<AudioFlinger>& audioFlinger, pid_t pid); 233 virtual ~Client(); 234 const sp<MemoryDealer>& heap() const; 235 pid_t pid() const { return mPid; } 236 sp<AudioFlinger> audioFlinger() { return mAudioFlinger; } 237 238 private: 239 Client(const Client&); 240 Client& operator = (const Client&); 241 sp<AudioFlinger> mAudioFlinger; 242 sp<MemoryDealer> mMemoryDealer; 243 pid_t mPid; 244 }; 245 246 // --- Notification Client --- 247 class NotificationClient : public IBinder::DeathRecipient { 248 public: 249 NotificationClient(const sp<AudioFlinger>& audioFlinger, 250 const sp<IAudioFlingerClient>& client, 251 pid_t pid); 252 virtual ~NotificationClient(); 253 254 sp<IAudioFlingerClient> client() { return mClient; } 255 256 // IBinder::DeathRecipient 257 virtual void binderDied(const wp<IBinder>& who); 258 259 private: 260 NotificationClient(const NotificationClient&); 261 NotificationClient& operator = (const NotificationClient&); 262 263 sp<AudioFlinger> mAudioFlinger; 264 pid_t mPid; 265 sp<IAudioFlingerClient> mClient; 266 }; 267 268 class TrackHandle; 269 class RecordHandle; 270 class RecordThread; 271 class PlaybackThread; 272 class MixerThread; 273 class DirectOutputThread; 274 class DuplicatingThread; 275 class Track; 276 class RecordTrack; 277 class EffectModule; 278 class EffectHandle; 279 class EffectChain; 280 struct AudioStreamOut; 281 struct AudioStreamIn; 282 283 class ThreadBase : public Thread { 284 public: 285 ThreadBase (const sp<AudioFlinger>& audioFlinger, int id, uint32_t device); 286 virtual ~ThreadBase(); 287 288 289 enum type { 290 MIXER, // Thread class is MixerThread 291 DIRECT, // Thread class is DirectOutputThread 292 DUPLICATING, // Thread class is DuplicatingThread 293 RECORD // Thread class is RecordThread 294 }; 295 296 status_t dumpBase(int fd, const Vector<String16>& args); 297 status_t dumpEffectChains(int fd, const Vector<String16>& args); 298 299 void clearPowerManager(); 300 301 // base for record and playback 302 class TrackBase : public AudioBufferProvider, public RefBase { 303 304 public: 305 enum track_state { 306 IDLE, 307 TERMINATED, 308 STOPPED, 309 RESUMING, 310 ACTIVE, 311 PAUSING, 312 PAUSED 313 }; 314 315 enum track_flags { 316 STEPSERVER_FAILED = 0x01, // StepServer could not acquire cblk->lock mutex 317 SYSTEM_FLAGS_MASK = 0x0000ffffUL, 318 // The upper 16 bits are used for track-specific flags. 319 }; 320 321 TrackBase(const wp<ThreadBase>& thread, 322 const sp<Client>& client, 323 uint32_t sampleRate, 324 uint32_t format, 325 uint32_t channelMask, 326 int frameCount, 327 uint32_t flags, 328 const sp<IMemory>& sharedBuffer, 329 int sessionId); 330 ~TrackBase(); 331 332 virtual status_t start() = 0; 333 virtual void stop() = 0; 334 sp<IMemory> getCblk() const; 335 audio_track_cblk_t* cblk() const { return mCblk; } 336 int sessionId() { return mSessionId; } 337 338 protected: 339 friend class ThreadBase; 340 friend class RecordHandle; 341 friend class PlaybackThread; 342 friend class RecordThread; 343 friend class MixerThread; 344 friend class DirectOutputThread; 345 346 TrackBase(const TrackBase&); 347 TrackBase& operator = (const TrackBase&); 348 349 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0; 350 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 351 352 uint32_t format() const { 353 return mFormat; 354 } 355 356 int channelCount() const ; 357 358 uint32_t channelMask() const; 359 360 int sampleRate() const; 361 362 void* getBuffer(uint32_t offset, uint32_t frames) const; 363 364 bool isStopped() const { 365 return mState == STOPPED; 366 } 367 368 bool isTerminated() const { 369 return mState == TERMINATED; 370 } 371 372 bool step(); 373 void reset(); 374 375 wp<ThreadBase> mThread; 376 sp<Client> mClient; 377 sp<IMemory> mCblkMemory; 378 audio_track_cblk_t* mCblk; 379 void* mBuffer; 380 void* mBufferEnd; 381 uint32_t mFrameCount; 382 // we don't really need a lock for these 383 int mState; 384 int mClientTid; 385 uint32_t mFormat; 386 uint32_t mFlags; 387 int mSessionId; 388 uint8_t mChannelCount; 389 uint32_t mChannelMask; 390 }; 391 392 class ConfigEvent { 393 public: 394 ConfigEvent() : mEvent(0), mParam(0) {} 395 396 int mEvent; 397 int mParam; 398 }; 399 400 class PMDeathRecipient : public IBinder::DeathRecipient { 401 public: 402 PMDeathRecipient(const wp<ThreadBase>& thread) : mThread(thread) {} 403 virtual ~PMDeathRecipient() {} 404 405 // IBinder::DeathRecipient 406 virtual void binderDied(const wp<IBinder>& who); 407 408 private: 409 PMDeathRecipient(const PMDeathRecipient&); 410 PMDeathRecipient& operator = (const PMDeathRecipient&); 411 412 wp<ThreadBase> mThread; 413 }; 414 415 virtual status_t initCheck() const = 0; 416 int type() const { return mType; } 417 uint32_t sampleRate() const; 418 int channelCount() const; 419 uint32_t format() const; 420 size_t frameCount() const; 421 void wakeUp() { mWaitWorkCV.broadcast(); } 422 void exit(); 423 virtual bool checkForNewParameters_l() = 0; 424 virtual status_t setParameters(const String8& keyValuePairs); 425 virtual String8 getParameters(const String8& keys) = 0; 426 virtual void audioConfigChanged_l(int event, int param = 0) = 0; 427 void sendConfigEvent(int event, int param = 0); 428 void sendConfigEvent_l(int event, int param = 0); 429 void processConfigEvents(); 430 int id() const { return mId;} 431 bool standby() { return mStandby; } 432 uint32_t device() { return mDevice; } 433 virtual audio_stream_t* stream() = 0; 434 435 sp<EffectHandle> createEffect_l( 436 const sp<AudioFlinger::Client>& client, 437 const sp<IEffectClient>& effectClient, 438 int32_t priority, 439 int sessionId, 440 effect_descriptor_t *desc, 441 int *enabled, 442 status_t *status); 443 void disconnectEffect(const sp< EffectModule>& effect, 444 const wp<EffectHandle>& handle, 445 bool unpiniflast); 446 447 // return values for hasAudioSession (bit field) 448 enum effect_state { 449 EFFECT_SESSION = 0x1, // the audio session corresponds to at least one 450 // effect 451 TRACK_SESSION = 0x2 // the audio session corresponds to at least one 452 // track 453 }; 454 455 // get effect chain corresponding to session Id. 456 sp<EffectChain> getEffectChain(int sessionId); 457 // same as getEffectChain() but must be called with ThreadBase mutex locked 458 sp<EffectChain> getEffectChain_l(int sessionId); 459 // add an effect chain to the chain list (mEffectChains) 460 virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0; 461 // remove an effect chain from the chain list (mEffectChains) 462 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain) = 0; 463 // lock mall effect chains Mutexes. Must be called before releasing the 464 // ThreadBase mutex before processing the mixer and effects. This guarantees the 465 // integrity of the chains during the process. 466 void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains); 467 // unlock effect chains after process 468 void unlockEffectChains(Vector<sp <EffectChain> >& effectChains); 469 // set audio mode to all effect chains 470 void setMode(uint32_t mode); 471 // get effect module with corresponding ID on specified audio session 472 sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId); 473 // add and effect module. Also creates the effect chain is none exists for 474 // the effects audio session 475 status_t addEffect_l(const sp< EffectModule>& effect); 476 // remove and effect module. Also removes the effect chain is this was the last 477 // effect 478 void removeEffect_l(const sp< EffectModule>& effect); 479 // detach all tracks connected to an auxiliary effect 480 virtual void detachAuxEffect_l(int effectId) {} 481 // returns either EFFECT_SESSION if effects on this audio session exist in one 482 // chain, or TRACK_SESSION if tracks on this audio session exist, or both 483 virtual uint32_t hasAudioSession(int sessionId) = 0; 484 // the value returned by default implementation is not important as the 485 // strategy is only meaningful for PlaybackThread which implements this method 486 virtual uint32_t getStrategyForSession_l(int sessionId) { return 0; } 487 488 // suspend or restore effect according to the type of effect passed. a NULL 489 // type pointer means suspend all effects in the session 490 void setEffectSuspended(const effect_uuid_t *type, 491 bool suspend, 492 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 493 // check if some effects must be suspended/restored when an effect is enabled 494 // or disabled 495 virtual void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 496 bool enabled, 497 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 498 499 mutable Mutex mLock; 500 501 protected: 502 503 // entry describing an effect being suspended in mSuspendedSessions keyed vector 504 class SuspendedSessionDesc : public RefBase { 505 public: 506 SuspendedSessionDesc() : mRefCount(0) {} 507 508 int mRefCount; // number of active suspend requests 509 effect_uuid_t mType; // effect type UUID 510 }; 511 512 void acquireWakeLock(); 513 void acquireWakeLock_l(); 514 void releaseWakeLock(); 515 void releaseWakeLock_l(); 516 void setEffectSuspended_l(const effect_uuid_t *type, 517 bool suspend, 518 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 519 // updated mSuspendedSessions when an effect suspended or restored 520 void updateSuspendedSessions_l(const effect_uuid_t *type, 521 bool suspend, 522 int sessionId); 523 // check if some effects must be suspended when an effect chain is added 524 void checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain); 525 526 friend class AudioFlinger; 527 friend class Track; 528 friend class TrackBase; 529 friend class PlaybackThread; 530 friend class MixerThread; 531 friend class DirectOutputThread; 532 friend class DuplicatingThread; 533 friend class RecordThread; 534 friend class RecordTrack; 535 536 int mType; 537 Condition mWaitWorkCV; 538 sp<AudioFlinger> mAudioFlinger; 539 uint32_t mSampleRate; 540 size_t mFrameCount; 541 uint32_t mChannelMask; 542 uint16_t mChannelCount; 543 uint16_t mFrameSize; 544 uint32_t mFormat; 545 Condition mParamCond; 546 Vector<String8> mNewParameters; 547 status_t mParamStatus; 548 Vector<ConfigEvent *> mConfigEvents; 549 bool mStandby; 550 int mId; 551 bool mExiting; 552 Vector< sp<EffectChain> > mEffectChains; 553 uint32_t mDevice; // output device for PlaybackThread 554 // input + output devices for RecordThread 555 static const int kNameLength = 32; 556 char mName[kNameLength]; 557 sp<IPowerManager> mPowerManager; 558 sp<IBinder> mWakeLockToken; 559 sp<PMDeathRecipient> mDeathRecipient; 560 // list of suspended effects per session and per type. The first vector is 561 // keyed by session ID, the second by type UUID timeLow field 562 KeyedVector< int, KeyedVector< int, sp<SuspendedSessionDesc> > > mSuspendedSessions; 563 }; 564 565 // --- PlaybackThread --- 566 class PlaybackThread : public ThreadBase { 567 public: 568 569 enum mixer_state { 570 MIXER_IDLE, 571 MIXER_TRACKS_ENABLED, 572 MIXER_TRACKS_READY 573 }; 574 575 // playback track 576 class Track : public TrackBase { 577 public: 578 Track( const wp<ThreadBase>& thread, 579 const sp<Client>& client, 580 int streamType, 581 uint32_t sampleRate, 582 uint32_t format, 583 uint32_t channelMask, 584 int frameCount, 585 const sp<IMemory>& sharedBuffer, 586 int sessionId); 587 ~Track(); 588 589 void dump(char* buffer, size_t size); 590 virtual status_t start(); 591 virtual void stop(); 592 void pause(); 593 594 void flush(); 595 void destroy(); 596 void mute(bool); 597 void setVolume(float left, float right); 598 int name() const { 599 return mName; 600 } 601 602 int type() const { 603 return mStreamType; 604 } 605 status_t attachAuxEffect(int EffectId); 606 void setAuxBuffer(int EffectId, int32_t *buffer); 607 int32_t *auxBuffer() { return mAuxBuffer; } 608 void setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; } 609 int16_t *mainBuffer() { return mMainBuffer; } 610 int auxEffectId() { return mAuxEffectId; } 611 612 613 protected: 614 friend class ThreadBase; 615 friend class TrackHandle; 616 friend class PlaybackThread; 617 friend class MixerThread; 618 friend class DirectOutputThread; 619 620 Track(const Track&); 621 Track& operator = (const Track&); 622 623 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 624 bool isMuted() { return mMute; } 625 bool isPausing() const { 626 return mState == PAUSING; 627 } 628 bool isPaused() const { 629 return mState == PAUSED; 630 } 631 bool isReady() const; 632 void setPaused() { mState = PAUSED; } 633 void reset(); 634 635 bool isOutputTrack() const { 636 return (mStreamType == AUDIO_STREAM_CNT); 637 } 638 639 // we don't really need a lock for these 640 float mVolume[2]; 641 volatile bool mMute; 642 // FILLED state is used for suppressing volume ramp at begin of playing 643 enum {FS_FILLING, FS_FILLED, FS_ACTIVE}; 644 mutable uint8_t mFillingUpStatus; 645 int8_t mRetryCount; 646 sp<IMemory> mSharedBuffer; 647 bool mResetDone; 648 int mStreamType; 649 int mName; 650 int16_t *mMainBuffer; 651 int32_t *mAuxBuffer; 652 int mAuxEffectId; 653 bool mHasVolumeController; 654 }; // end of Track 655 656 657 // playback track 658 class OutputTrack : public Track { 659 public: 660 661 class Buffer: public AudioBufferProvider::Buffer { 662 public: 663 int16_t *mBuffer; 664 }; 665 666 OutputTrack( const wp<ThreadBase>& thread, 667 DuplicatingThread *sourceThread, 668 uint32_t sampleRate, 669 uint32_t format, 670 uint32_t channelMask, 671 int frameCount); 672 ~OutputTrack(); 673 674 virtual status_t start(); 675 virtual void stop(); 676 bool write(int16_t* data, uint32_t frames); 677 bool bufferQueueEmpty() { return (mBufferQueue.size() == 0) ? true : false; } 678 bool isActive() { return mActive; } 679 wp<ThreadBase>& thread() { return mThread; } 680 681 private: 682 683 status_t obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs); 684 void clearBufferQueue(); 685 686 // Maximum number of pending buffers allocated by OutputTrack::write() 687 static const uint8_t kMaxOverFlowBuffers = 10; 688 689 Vector < Buffer* > mBufferQueue; 690 AudioBufferProvider::Buffer mOutBuffer; 691 bool mActive; 692 DuplicatingThread* mSourceThread; 693 }; // end of OutputTrack 694 695 PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 696 virtual ~PlaybackThread(); 697 698 virtual status_t dump(int fd, const Vector<String16>& args); 699 700 // Thread virtuals 701 virtual status_t readyToRun(); 702 virtual void onFirstRef(); 703 704 virtual status_t initCheck() const { return (mOutput == 0) ? NO_INIT : NO_ERROR; } 705 706 virtual uint32_t latency() const; 707 708 virtual status_t setMasterVolume(float value); 709 virtual status_t setMasterMute(bool muted); 710 711 virtual float masterVolume() const; 712 virtual bool masterMute() const; 713 714 virtual status_t setStreamVolume(int stream, float value); 715 virtual status_t setStreamMute(int stream, bool muted); 716 717 virtual float streamVolume(int stream) const; 718 virtual bool streamMute(int stream) const; 719 720 sp<Track> createTrack_l( 721 const sp<AudioFlinger::Client>& client, 722 int streamType, 723 uint32_t sampleRate, 724 uint32_t format, 725 uint32_t channelMask, 726 int frameCount, 727 const sp<IMemory>& sharedBuffer, 728 int sessionId, 729 status_t *status); 730 731 AudioStreamOut* getOutput(); 732 AudioStreamOut* clearOutput(); 733 virtual audio_stream_t* stream(); 734 735 void suspend() { mSuspended++; } 736 void restore() { if (mSuspended) mSuspended--; } 737 bool isSuspended() { return (mSuspended != 0); } 738 virtual String8 getParameters(const String8& keys); 739 virtual void audioConfigChanged_l(int event, int param = 0); 740 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames); 741 int16_t *mixBuffer() { return mMixBuffer; }; 742 743 virtual void detachAuxEffect_l(int effectId); 744 status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track, 745 int EffectId); 746 status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track, 747 int EffectId); 748 749 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 750 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 751 virtual uint32_t hasAudioSession(int sessionId); 752 virtual uint32_t getStrategyForSession_l(int sessionId); 753 754 struct stream_type_t { 755 stream_type_t() 756 : volume(1.0f), 757 mute(false) 758 { 759 } 760 float volume; 761 bool mute; 762 }; 763 764 protected: 765 int16_t* mMixBuffer; 766 int mSuspended; 767 int mBytesWritten; 768 bool mMasterMute; 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() = 0; 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 additionnal 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(int 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 activeSleepTimeUs(); 831 virtual uint32_t idleSleepTimeUs(); 832 virtual uint32_t suspendSleepTimeUs(); 833 834 AudioMixer* mAudioMixer; 835 }; 836 837 class DirectOutputThread : public PlaybackThread { 838 public: 839 840 DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 841 ~DirectOutputThread(); 842 843 // Thread virtuals 844 virtual bool threadLoop(); 845 846 virtual bool checkForNewParameters_l(); 847 848 protected: 849 virtual int getTrackName_l(); 850 virtual void deleteTrackName_l(int name); 851 virtual uint32_t activeSleepTimeUs(); 852 virtual uint32_t idleSleepTimeUs(); 853 virtual uint32_t suspendSleepTimeUs(); 854 855 private: 856 void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp); 857 858 float mLeftVolFloat; 859 float mRightVolFloat; 860 uint16_t mLeftVolShort; 861 uint16_t mRightVolShort; 862 }; 863 864 class DuplicatingThread : public MixerThread { 865 public: 866 DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, int id); 867 ~DuplicatingThread(); 868 869 // Thread virtuals 870 virtual bool threadLoop(); 871 void addOutputTrack(MixerThread* thread); 872 void removeOutputTrack(MixerThread* thread); 873 uint32_t waitTimeMs() { return mWaitTimeMs; } 874 protected: 875 virtual uint32_t activeSleepTimeUs(); 876 877 private: 878 bool outputsReady(SortedVector< sp<OutputTrack> > &outputTracks); 879 void updateWaitTime(); 880 881 SortedVector < sp<OutputTrack> > mOutputTracks; 882 uint32_t mWaitTimeMs; 883 }; 884 885 PlaybackThread *checkPlaybackThread_l(int output) const; 886 MixerThread *checkMixerThread_l(int output) const; 887 RecordThread *checkRecordThread_l(int input) const; 888 float streamVolumeInternal(int stream) const { return mStreamTypes[stream].volume; } 889 void audioConfigChanged_l(int event, int ioHandle, void *param2); 890 891 uint32_t nextUniqueId(); 892 status_t moveEffectChain_l(int sessionId, 893 AudioFlinger::PlaybackThread *srcThread, 894 AudioFlinger::PlaybackThread *dstThread, 895 bool reRegister); 896 PlaybackThread *primaryPlaybackThread_l(); 897 uint32_t primaryOutputDevice_l(); 898 899 friend class AudioBuffer; 900 901 class TrackHandle : public android::BnAudioTrack { 902 public: 903 TrackHandle(const sp<PlaybackThread::Track>& track); 904 virtual ~TrackHandle(); 905 virtual status_t start(); 906 virtual void stop(); 907 virtual void flush(); 908 virtual void mute(bool); 909 virtual void pause(); 910 virtual void setVolume(float left, float right); 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 uint32_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 == 0) ? NO_INIT : NO_ERROR; } 979 sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l( 980 const sp<AudioFlinger::Client>& client, 981 uint32_t sampleRate, 982 int 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(uint32_t mode); 1116 status_t stop(); 1117 void setSuspended(bool suspended); 1118 bool suspended(); 1119 1120 sp<EffectHandle> controlHandle(); 1121 1122 bool isPinned() { return mPinned; } 1123 void unPin() { mPinned = false; } 1124 1125 status_t dump(int fd, const Vector<String16>& args); 1126 1127 protected: 1128 friend class EffectHandle; 1129 friend class AudioFlinger; 1130 bool mPinned; 1131 1132 // Maximum time allocated to effect engines to complete the turn off sequence 1133 static const uint32_t MAX_DISABLE_TIME_MS = 10000; 1134 1135 EffectModule(const EffectModule&); 1136 EffectModule& operator = (const EffectModule&); 1137 1138 status_t start_l(); 1139 status_t stop_l(); 1140 1141 Mutex mLock; // mutex for process, commands and handles list protection 1142 wp<ThreadBase> mThread; // parent thread 1143 wp<EffectChain> mChain; // parent effect chain 1144 int mId; // this instance unique ID 1145 int mSessionId; // audio session ID 1146 effect_descriptor_t mDescriptor;// effect descriptor received from effect engine 1147 effect_config_t mConfig; // input and output audio configuration 1148 effect_handle_t mEffectInterface; // Effect module C API 1149 status_t mStatus; // initialization status 1150 uint32_t mState; // current activation state (effect_state) 1151 Vector< wp<EffectHandle> > mHandles; // list of client handles 1152 uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after 1153 // sending disable command. 1154 uint32_t mDisableWaitCnt; // current process() calls count during disable period. 1155 bool mSuspended; // effect is suspended: temporarily disabled by framework 1156 }; 1157 1158 // The EffectHandle class implements the IEffect interface. It provides resources 1159 // to receive parameter updates, keeps track of effect control 1160 // ownership and state and has a pointer to the EffectModule object it is controlling. 1161 // There is one EffectHandle object for each application controlling (or using) 1162 // an effect module. 1163 // The EffectHandle is obtained by calling AudioFlinger::createEffect(). 1164 class EffectHandle: public android::BnEffect { 1165 public: 1166 1167 EffectHandle(const sp<EffectModule>& effect, 1168 const sp<AudioFlinger::Client>& client, 1169 const sp<IEffectClient>& effectClient, 1170 int32_t priority); 1171 virtual ~EffectHandle(); 1172 1173 // IEffect 1174 virtual status_t enable(); 1175 virtual status_t disable(); 1176 virtual status_t command(uint32_t cmdCode, 1177 uint32_t cmdSize, 1178 void *pCmdData, 1179 uint32_t *replySize, 1180 void *pReplyData); 1181 virtual void disconnect(); 1182 virtual void disconnect(bool unpiniflast); 1183 virtual sp<IMemory> getCblk() const; 1184 virtual status_t onTransact(uint32_t code, const Parcel& data, 1185 Parcel* reply, uint32_t flags); 1186 1187 1188 // Give or take control of effect module 1189 // - hasControl: true if control is given, false if removed 1190 // - signal: true client app should be signaled of change, false otherwise 1191 // - enabled: state of the effect when control is passed 1192 void setControl(bool hasControl, bool signal, bool enabled); 1193 void commandExecuted(uint32_t cmdCode, 1194 uint32_t cmdSize, 1195 void *pCmdData, 1196 uint32_t replySize, 1197 void *pReplyData); 1198 void setEnabled(bool enabled); 1199 bool enabled() { return mEnabled; } 1200 1201 // Getters 1202 int id() { return mEffect->id(); } 1203 int priority() { return mPriority; } 1204 bool hasControl() { return mHasControl; } 1205 sp<EffectModule> effect() { return mEffect; } 1206 1207 void dump(char* buffer, size_t size); 1208 1209 protected: 1210 friend class AudioFlinger; 1211 friend class EffectModule; 1212 EffectHandle(const EffectHandle&); 1213 EffectHandle& operator =(const EffectHandle&); 1214 1215 sp<EffectModule> mEffect; // pointer to controlled EffectModule 1216 sp<IEffectClient> mEffectClient; // callback interface for client notifications 1217 sp<Client> mClient; // client for shared memory allocation 1218 sp<IMemory> mCblkMemory; // shared memory for control block 1219 effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory 1220 uint8_t* mBuffer; // pointer to parameter area in shared memory 1221 int mPriority; // client application priority to control the effect 1222 bool mHasControl; // true if this handle is controlling the effect 1223 bool mEnabled; // cached enable state: needed when the effect is 1224 // restored after being suspended 1225 }; 1226 1227 // the EffectChain class represents a group of effects associated to one audio session. 1228 // There can be any number of EffectChain objects per output mixer thread (PlaybackThread). 1229 // The EffecChain with session ID 0 contains global effects applied to the output mix. 1230 // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks) 1231 // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding 1232 // in the effect process order. When attached to a track (session ID != 0), it also provide it's own 1233 // input buffer used by the track as accumulation buffer. 1234 class EffectChain: public RefBase { 1235 public: 1236 EffectChain(const wp<ThreadBase>& wThread, int sessionId); 1237 ~EffectChain(); 1238 1239 // special key used for an entry in mSuspendedEffects keyed vector 1240 // corresponding to a suspend all request. 1241 static const int kKeyForSuspendAll = 0; 1242 1243 void process_l(); 1244 1245 void lock() { 1246 mLock.lock(); 1247 } 1248 void unlock() { 1249 mLock.unlock(); 1250 } 1251 1252 status_t addEffect_l(const sp<EffectModule>& handle); 1253 size_t removeEffect_l(const sp<EffectModule>& handle); 1254 1255 int sessionId() { return mSessionId; } 1256 void setSessionId(int sessionId) { mSessionId = sessionId; } 1257 1258 sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor); 1259 sp<EffectModule> getEffectFromId_l(int id); 1260 sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type); 1261 bool setVolume_l(uint32_t *left, uint32_t *right); 1262 void setDevice_l(uint32_t device); 1263 void setMode_l(uint32_t mode); 1264 1265 void setInBuffer(int16_t *buffer, bool ownsBuffer = false) { 1266 mInBuffer = buffer; 1267 mOwnInBuffer = ownsBuffer; 1268 } 1269 int16_t *inBuffer() { 1270 return mInBuffer; 1271 } 1272 void setOutBuffer(int16_t *buffer) { 1273 mOutBuffer = buffer; 1274 } 1275 int16_t *outBuffer() { 1276 return mOutBuffer; 1277 } 1278 1279 void incTrackCnt() { android_atomic_inc(&mTrackCnt); } 1280 void decTrackCnt() { android_atomic_dec(&mTrackCnt); } 1281 int32_t trackCnt() { return mTrackCnt;} 1282 1283 void incActiveTrackCnt() { android_atomic_inc(&mActiveTrackCnt); } 1284 void decActiveTrackCnt() { android_atomic_dec(&mActiveTrackCnt); } 1285 int32_t activeTrackCnt() { return mActiveTrackCnt;} 1286 1287 uint32_t strategy() { return mStrategy; } 1288 void setStrategy(uint32_t strategy) 1289 { mStrategy = strategy; } 1290 1291 // suspend effect of the given type 1292 void setEffectSuspended_l(const effect_uuid_t *type, 1293 bool suspend); 1294 // suspend all eligible effects 1295 void setEffectSuspendedAll_l(bool suspend); 1296 // check if effects should be suspend or restored when a given effect is enable or disabled 1297 virtual void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 1298 bool enabled); 1299 1300 status_t dump(int fd, const Vector<String16>& args); 1301 1302 protected: 1303 friend class AudioFlinger; 1304 EffectChain(const EffectChain&); 1305 EffectChain& operator =(const EffectChain&); 1306 1307 class SuspendedEffectDesc : public RefBase { 1308 public: 1309 SuspendedEffectDesc() : mRefCount(0) {} 1310 1311 int mRefCount; 1312 effect_uuid_t mType; 1313 wp<EffectModule> mEffect; 1314 }; 1315 1316 // get a list of effect modules to suspend when an effect of the type 1317 // passed is enabled. 1318 Vector< sp<EffectModule> > getSuspendEligibleEffects(); 1319 // get an effect module if it is currently enable 1320 sp<EffectModule> getEffectIfEnabled(const effect_uuid_t *type); 1321 // true if the effect whose descriptor is passed can be suspended 1322 // OEMs can modify the rules implemented in this method to exclude specific effect 1323 // types or implementations from the suspend/restore mechanism. 1324 bool isEffectEligibleForSuspend(const effect_descriptor_t& desc); 1325 1326 wp<ThreadBase> mThread; // parent mixer thread 1327 Mutex mLock; // mutex protecting effect list 1328 Vector<sp<EffectModule> > mEffects; // list of effect modules 1329 int mSessionId; // audio session ID 1330 int16_t *mInBuffer; // chain input buffer 1331 int16_t *mOutBuffer; // chain output buffer 1332 volatile int32_t mActiveTrackCnt; // number of active tracks connected 1333 volatile int32_t mTrackCnt; // number of tracks connected 1334 bool mOwnInBuffer; // true if the chain owns its input buffer 1335 int mVolumeCtrlIdx; // index of insert effect having control over volume 1336 uint32_t mLeftVolume; // previous volume on left channel 1337 uint32_t mRightVolume; // previous volume on right channel 1338 uint32_t mNewLeftVolume; // new volume on left channel 1339 uint32_t mNewRightVolume; // new volume on right channel 1340 uint32_t mStrategy; // strategy for this effect chain 1341 // mSuspendedEffects lists all effect currently suspended in the chain 1342 // use effect type UUID timelow field as key. There is no real risk of identical 1343 // timeLow fields among effect type UUIDs. 1344 KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects; 1345 }; 1346 1347 struct AudioStreamOut { 1348 audio_hw_device_t *hwDev; 1349 audio_stream_out_t *stream; 1350 1351 AudioStreamOut(audio_hw_device_t *dev, audio_stream_out_t *out) : 1352 hwDev(dev), stream(out) {} 1353 }; 1354 1355 struct AudioStreamIn { 1356 audio_hw_device_t *hwDev; 1357 audio_stream_in_t *stream; 1358 1359 AudioStreamIn(audio_hw_device_t *dev, audio_stream_in_t *in) : 1360 hwDev(dev), stream(in) {} 1361 }; 1362 1363 struct AudioSessionRef { 1364 int sessionid; 1365 pid_t pid; 1366 int cnt; 1367 }; 1368 1369 friend class RecordThread; 1370 friend class PlaybackThread; 1371 1372 mutable Mutex mLock; 1373 1374 DefaultKeyedVector< pid_t, wp<Client> > mClients; 1375 1376 mutable Mutex mHardwareLock; 1377 audio_hw_device_t* mPrimaryHardwareDev; 1378 Vector<audio_hw_device_t*> mAudioHwDevs; 1379 mutable int mHardwareStatus; 1380 1381 1382 DefaultKeyedVector< int, sp<PlaybackThread> > mPlaybackThreads; 1383 PlaybackThread::stream_type_t mStreamTypes[AUDIO_STREAM_CNT]; 1384 float mMasterVolume; 1385 bool mMasterMute; 1386 1387 DefaultKeyedVector< int, sp<RecordThread> > mRecordThreads; 1388 1389 DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients; 1390 volatile int32_t mNextUniqueId; 1391 uint32_t mMode; 1392 bool mBtNrec; 1393 1394 Vector<AudioSessionRef*> mAudioSessionRefs; 1395}; 1396 1397 1398// ---------------------------------------------------------------------------- 1399 1400}; // namespace android 1401 1402#endif // ANDROID_AUDIO_FLINGER_H 1403