AudioFlinger.h revision f587ba5b991c7cd91e4df093d0d796bd419e5d67
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/AudioSystem.h> 30 31#include <utils/Atomic.h> 32#include <utils/Errors.h> 33#include <utils/threads.h> 34#include <utils/SortedVector.h> 35#include <utils/TypeHelpers.h> 36#include <utils/Vector.h> 37 38#include <binder/BinderService.h> 39#include <binder/MemoryDealer.h> 40 41#include <system/audio.h> 42#include <hardware/audio.h> 43 44#include "AudioBufferProvider.h" 45 46#include <powermanager/IPowerManager.h> 47 48namespace android { 49 50class audio_track_cblk_t; 51class effect_param_cblk_t; 52class AudioMixer; 53class AudioBuffer; 54class AudioResampler; 55 56// ---------------------------------------------------------------------------- 57 58static const nsecs_t kStandbyTimeInNsecs = seconds(3); 59 60class AudioFlinger : 61 public BinderService<AudioFlinger>, 62 public BnAudioFlinger 63{ 64 friend class BinderService<AudioFlinger>; 65public: 66 static const char* getServiceName() { return "media.audio_flinger"; } 67 68 virtual status_t dump(int fd, const Vector<String16>& args); 69 70 // IAudioFlinger interface 71 virtual sp<IAudioTrack> createTrack( 72 pid_t pid, 73 audio_stream_type_t streamType, 74 uint32_t sampleRate, 75 audio_format_t format, 76 uint32_t channelMask, 77 int frameCount, 78 uint32_t flags, 79 const sp<IMemory>& sharedBuffer, 80 int output, 81 int *sessionId, 82 status_t *status); 83 84 virtual uint32_t sampleRate(int output) const; 85 virtual int channelCount(int output) const; 86 virtual audio_format_t format(int output) const; 87 virtual size_t frameCount(int output) const; 88 virtual uint32_t latency(int output) const; 89 90 virtual status_t setMasterVolume(float value); 91 virtual status_t setMasterMute(bool muted); 92 93 virtual float masterVolume() const; 94 virtual bool masterMute() const; 95 96 virtual status_t setStreamVolume(audio_stream_type_t stream, float value, int output); 97 virtual status_t setStreamMute(audio_stream_type_t stream, bool muted); 98 99 virtual float streamVolume(audio_stream_type_t stream, int output) const; 100 virtual bool streamMute(audio_stream_type_t stream) const; 101 102 virtual status_t setMode(audio_mode_t mode); 103 104 virtual status_t setMicMute(bool state); 105 virtual bool getMicMute() const; 106 107 virtual status_t setParameters(int ioHandle, const String8& keyValuePairs); 108 virtual String8 getParameters(int ioHandle, const String8& keys) const; 109 110 virtual void registerClient(const sp<IAudioFlingerClient>& client); 111 112 virtual size_t getInputBufferSize(uint32_t sampleRate, audio_format_t format, int channelCount) const; 113 virtual unsigned int getInputFramesLost(int ioHandle) const; 114 115 virtual int openOutput(uint32_t *pDevices, 116 uint32_t *pSamplingRate, 117 audio_format_t *pFormat, 118 uint32_t *pChannels, 119 uint32_t *pLatencyMs, 120 uint32_t flags); 121 122 virtual int openDuplicateOutput(int output1, int output2); 123 124 virtual status_t closeOutput(int output); 125 126 virtual status_t suspendOutput(int output); 127 128 virtual status_t restoreOutput(int output); 129 130 virtual int openInput(uint32_t *pDevices, 131 uint32_t *pSamplingRate, 132 audio_format_t *pFormat, 133 uint32_t *pChannels, 134 audio_in_acoustics_t acoustics); 135 136 virtual status_t closeInput(int input); 137 138 virtual status_t setStreamOutput(audio_stream_type_t stream, int output); 139 140 virtual status_t setVoiceVolume(float volume); 141 142 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output) const; 143 144 virtual int newAudioSessionId(); 145 146 virtual void acquireAudioSessionId(int audioSession); 147 148 virtual void releaseAudioSessionId(int audioSession); 149 150 virtual status_t queryNumberEffects(uint32_t *numEffects) const; 151 152 virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor) const; 153 154 virtual status_t getEffectDescriptor(effect_uuid_t *pUuid, 155 effect_descriptor_t *descriptor) const; 156 157 virtual sp<IEffect> createEffect(pid_t pid, 158 effect_descriptor_t *pDesc, 159 const sp<IEffectClient>& effectClient, 160 int32_t priority, 161 int io, 162 int sessionId, 163 status_t *status, 164 int *id, 165 int *enabled); 166 167 virtual status_t moveEffects(int sessionId, int srcOutput, int dstOutput); 168 169 enum hardware_call_state { 170 AUDIO_HW_IDLE = 0, 171 AUDIO_HW_INIT, 172 AUDIO_HW_OUTPUT_OPEN, 173 AUDIO_HW_OUTPUT_CLOSE, 174 AUDIO_HW_INPUT_OPEN, 175 AUDIO_HW_INPUT_CLOSE, 176 AUDIO_HW_STANDBY, 177 AUDIO_HW_SET_MASTER_VOLUME, 178 AUDIO_HW_GET_ROUTING, 179 AUDIO_HW_SET_ROUTING, 180 AUDIO_HW_GET_MODE, 181 AUDIO_HW_SET_MODE, 182 AUDIO_HW_GET_MIC_MUTE, 183 AUDIO_HW_SET_MIC_MUTE, 184 AUDIO_SET_VOICE_VOLUME, 185 AUDIO_SET_PARAMETER, 186 }; 187 188 // record interface 189 virtual sp<IAudioRecord> openRecord( 190 pid_t pid, 191 int input, 192 uint32_t sampleRate, 193 audio_format_t format, 194 uint32_t channelMask, 195 int frameCount, 196 uint32_t flags, 197 int *sessionId, 198 status_t *status); 199 200 virtual status_t onTransact( 201 uint32_t code, 202 const Parcel& data, 203 Parcel* reply, 204 uint32_t flags); 205 206 audio_mode_t getMode() const { return mMode; } 207 208 bool btNrecIsOff() { return mBtNrecIsOff; } 209 210private: 211 212 AudioFlinger(); 213 virtual ~AudioFlinger(); 214 215 status_t initCheck() const; 216 virtual void onFirstRef(); 217 audio_hw_device_t* findSuitableHwDev_l(uint32_t devices); 218 void purgeStaleEffects_l(); 219 220 // Internal dump utilites. 221 status_t dumpPermissionDenial(int fd, const Vector<String16>& args); 222 status_t dumpClients(int fd, const Vector<String16>& args); 223 status_t dumpInternals(int fd, const Vector<String16>& args); 224 225 // --- Client --- 226 class Client : public RefBase { 227 public: 228 Client(const sp<AudioFlinger>& audioFlinger, pid_t pid); 229 virtual ~Client(); 230 sp<MemoryDealer> heap() const; 231 pid_t pid() const { return mPid; } 232 sp<AudioFlinger> audioFlinger() { return mAudioFlinger; } 233 234 private: 235 Client(const Client&); 236 Client& operator = (const Client&); 237 const sp<AudioFlinger> mAudioFlinger; 238 const sp<MemoryDealer> mMemoryDealer; 239 const pid_t mPid; 240 }; 241 242 // --- Notification Client --- 243 class NotificationClient : public IBinder::DeathRecipient { 244 public: 245 NotificationClient(const sp<AudioFlinger>& audioFlinger, 246 const sp<IAudioFlingerClient>& client, 247 pid_t pid); 248 virtual ~NotificationClient(); 249 250 sp<IAudioFlingerClient> audioFlingerClient() const { return mAudioFlingerClient; } 251 252 // IBinder::DeathRecipient 253 virtual void binderDied(const wp<IBinder>& who); 254 255 private: 256 NotificationClient(const NotificationClient&); 257 NotificationClient& operator = (const NotificationClient&); 258 259 const sp<AudioFlinger> mAudioFlinger; 260 const pid_t mPid; 261 const sp<IAudioFlingerClient> mAudioFlingerClient; 262 }; 263 264 class TrackHandle; 265 class RecordHandle; 266 class RecordThread; 267 class PlaybackThread; 268 class MixerThread; 269 class DirectOutputThread; 270 class DuplicatingThread; 271 class Track; 272 class RecordTrack; 273 class EffectModule; 274 class EffectHandle; 275 class EffectChain; 276 struct AudioStreamOut; 277 struct AudioStreamIn; 278 279 class ThreadBase : public Thread { 280 public: 281 282 enum type_t { 283 MIXER, // Thread class is MixerThread 284 DIRECT, // Thread class is DirectOutputThread 285 DUPLICATING, // Thread class is DuplicatingThread 286 RECORD // Thread class is RecordThread 287 }; 288 289 ThreadBase (const sp<AudioFlinger>& audioFlinger, int id, uint32_t device, type_t type); 290 virtual ~ThreadBase(); 291 292 status_t dumpBase(int fd, const Vector<String16>& args); 293 status_t dumpEffectChains(int fd, const Vector<String16>& args); 294 295 void clearPowerManager(); 296 297 // base for record and playback 298 class TrackBase : public AudioBufferProvider, public RefBase { 299 300 public: 301 enum track_state { 302 IDLE, 303 TERMINATED, 304 STOPPED, 305 RESUMING, 306 ACTIVE, 307 PAUSING, 308 PAUSED 309 }; 310 311 enum track_flags { 312 STEPSERVER_FAILED = 0x01, // StepServer could not acquire cblk->lock mutex 313 SYSTEM_FLAGS_MASK = 0x0000ffffUL, 314 // The upper 16 bits are used for track-specific flags. 315 }; 316 317 TrackBase(const wp<ThreadBase>& thread, 318 const sp<Client>& client, 319 uint32_t sampleRate, 320 audio_format_t format, 321 uint32_t channelMask, 322 int frameCount, 323 uint32_t flags, 324 const sp<IMemory>& sharedBuffer, 325 int sessionId); 326 ~TrackBase(); 327 328 virtual status_t start() = 0; 329 virtual void stop() = 0; 330 sp<IMemory> getCblk() const; 331 audio_track_cblk_t* cblk() const { return mCblk; } 332 int sessionId() { return mSessionId; } 333 334 protected: 335 friend class ThreadBase; 336 friend class RecordHandle; 337 friend class PlaybackThread; 338 friend class RecordThread; 339 friend class MixerThread; 340 friend class DirectOutputThread; 341 342 TrackBase(const TrackBase&); 343 TrackBase& operator = (const TrackBase&); 344 345 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0; 346 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 347 348 audio_format_t format() const { 349 return mFormat; 350 } 351 352 int channelCount() const ; 353 354 uint32_t channelMask() const; 355 356 int sampleRate() const; 357 358 void* getBuffer(uint32_t offset, uint32_t frames) const; 359 360 bool isStopped() const { 361 return mState == STOPPED; 362 } 363 364 bool isTerminated() const { 365 return mState == TERMINATED; 366 } 367 368 bool step(); 369 void reset(); 370 371 const wp<ThreadBase> mThread; 372 /*const*/ sp<Client> mClient; // see explanation at ~TrackBase() why not const 373 sp<IMemory> mCblkMemory; 374 audio_track_cblk_t* mCblk; 375 void* mBuffer; 376 void* mBufferEnd; 377 uint32_t mFrameCount; 378 // we don't really need a lock for these 379 track_state mState; 380 int mClientTid; 381 const audio_format_t mFormat; 382 uint32_t mFlags; 383 const int mSessionId; 384 uint8_t mChannelCount; 385 uint32_t mChannelMask; 386 }; 387 388 class ConfigEvent { 389 public: 390 ConfigEvent() : mEvent(0), mParam(0) {} 391 392 int mEvent; 393 int mParam; 394 }; 395 396 class PMDeathRecipient : public IBinder::DeathRecipient { 397 public: 398 PMDeathRecipient(const wp<ThreadBase>& thread) : mThread(thread) {} 399 virtual ~PMDeathRecipient() {} 400 401 // IBinder::DeathRecipient 402 virtual void binderDied(const wp<IBinder>& who); 403 404 private: 405 PMDeathRecipient(const PMDeathRecipient&); 406 PMDeathRecipient& operator = (const PMDeathRecipient&); 407 408 wp<ThreadBase> mThread; 409 }; 410 411 virtual status_t initCheck() const = 0; 412 type_t type() const { return mType; } 413 uint32_t sampleRate() const; 414 int channelCount() const; 415 audio_format_t format() const; 416 size_t frameCount() const; 417 void wakeUp() { mWaitWorkCV.broadcast(); } 418 void exit(); 419 virtual bool checkForNewParameters_l() = 0; 420 virtual status_t setParameters(const String8& keyValuePairs); 421 virtual String8 getParameters(const String8& keys) = 0; 422 virtual void audioConfigChanged_l(int event, int param = 0) = 0; 423 void sendConfigEvent(int event, int param = 0); 424 void sendConfigEvent_l(int event, int param = 0); 425 void processConfigEvents(); 426 int id() const { return mId;} 427 bool standby() { return mStandby; } 428 uint32_t device() { return mDevice; } 429 virtual audio_stream_t* stream() = 0; 430 431 sp<EffectHandle> createEffect_l( 432 const sp<AudioFlinger::Client>& client, 433 const sp<IEffectClient>& effectClient, 434 int32_t priority, 435 int sessionId, 436 effect_descriptor_t *desc, 437 int *enabled, 438 status_t *status); 439 void disconnectEffect(const sp< EffectModule>& effect, 440 const wp<EffectHandle>& handle, 441 bool unpiniflast); 442 443 // return values for hasAudioSession (bit field) 444 enum effect_state { 445 EFFECT_SESSION = 0x1, // the audio session corresponds to at least one 446 // effect 447 TRACK_SESSION = 0x2 // the audio session corresponds to at least one 448 // track 449 }; 450 451 // get effect chain corresponding to session Id. 452 sp<EffectChain> getEffectChain(int sessionId); 453 // same as getEffectChain() but must be called with ThreadBase mutex locked 454 sp<EffectChain> getEffectChain_l(int sessionId); 455 // add an effect chain to the chain list (mEffectChains) 456 virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0; 457 // remove an effect chain from the chain list (mEffectChains) 458 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain) = 0; 459 // lock mall effect chains Mutexes. Must be called before releasing the 460 // ThreadBase mutex before processing the mixer and effects. This guarantees the 461 // integrity of the chains during the process. 462 void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains); 463 // unlock effect chains after process 464 void unlockEffectChains(Vector<sp <EffectChain> >& effectChains); 465 // set audio mode to all effect chains 466 void setMode(audio_mode_t mode); 467 // get effect module with corresponding ID on specified audio session 468 sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId); 469 // add and effect module. Also creates the effect chain is none exists for 470 // the effects audio session 471 status_t addEffect_l(const sp< EffectModule>& effect); 472 // remove and effect module. Also removes the effect chain is this was the last 473 // effect 474 void removeEffect_l(const sp< EffectModule>& effect); 475 // detach all tracks connected to an auxiliary effect 476 virtual void detachAuxEffect_l(int effectId) {} 477 // returns either EFFECT_SESSION if effects on this audio session exist in one 478 // chain, or TRACK_SESSION if tracks on this audio session exist, or both 479 virtual uint32_t hasAudioSession(int sessionId) = 0; 480 // the value returned by default implementation is not important as the 481 // strategy is only meaningful for PlaybackThread which implements this method 482 virtual uint32_t getStrategyForSession_l(int sessionId) { return 0; } 483 484 // suspend or restore effect according to the type of effect passed. a NULL 485 // type pointer means suspend all effects in the session 486 void setEffectSuspended(const effect_uuid_t *type, 487 bool suspend, 488 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 489 // check if some effects must be suspended/restored when an effect is enabled 490 // or disabled 491 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 492 bool enabled, 493 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 494 void checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect, 495 bool enabled, 496 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 497 mutable Mutex mLock; 498 499 protected: 500 501 // entry describing an effect being suspended in mSuspendedSessions keyed vector 502 class SuspendedSessionDesc : public RefBase { 503 public: 504 SuspendedSessionDesc() : mRefCount(0) {} 505 506 int mRefCount; // number of active suspend requests 507 effect_uuid_t mType; // effect type UUID 508 }; 509 510 void acquireWakeLock(); 511 void acquireWakeLock_l(); 512 void releaseWakeLock(); 513 void releaseWakeLock_l(); 514 void setEffectSuspended_l(const effect_uuid_t *type, 515 bool suspend, 516 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 517 // updated mSuspendedSessions when an effect suspended or restored 518 void updateSuspendedSessions_l(const effect_uuid_t *type, 519 bool suspend, 520 int sessionId); 521 // check if some effects must be suspended when an effect chain is added 522 void checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain); 523 524 friend class AudioFlinger; 525 friend class Track; 526 friend class TrackBase; 527 friend class PlaybackThread; 528 friend class MixerThread; 529 friend class DirectOutputThread; 530 friend class DuplicatingThread; 531 friend class RecordThread; 532 friend class RecordTrack; 533 534 const type_t mType; 535 Condition mWaitWorkCV; 536 const sp<AudioFlinger> mAudioFlinger; 537 uint32_t mSampleRate; 538 size_t mFrameCount; 539 uint32_t mChannelMask; 540 uint16_t mChannelCount; 541 size_t mFrameSize; 542 audio_format_t mFormat; 543 Condition mParamCond; 544 Vector<String8> mNewParameters; 545 status_t mParamStatus; 546 Vector<ConfigEvent> mConfigEvents; 547 bool mStandby; 548 int mId; 549 bool mExiting; 550 Vector< sp<EffectChain> > mEffectChains; 551 uint32_t mDevice; // output device for PlaybackThread 552 // input + output devices for RecordThread 553 static const int kNameLength = 32; 554 char mName[kNameLength]; 555 sp<IPowerManager> mPowerManager; 556 sp<IBinder> mWakeLockToken; 557 const sp<PMDeathRecipient> mDeathRecipient; 558 // list of suspended effects per session and per type. The first vector is 559 // keyed by session ID, the second by type UUID timeLow field 560 KeyedVector< int, KeyedVector< int, sp<SuspendedSessionDesc> > > mSuspendedSessions; 561 }; 562 563 // --- PlaybackThread --- 564 class PlaybackThread : public ThreadBase { 565 public: 566 567 enum mixer_state { 568 MIXER_IDLE, 569 MIXER_TRACKS_ENABLED, 570 MIXER_TRACKS_READY 571 }; 572 573 // playback track 574 class Track : public TrackBase { 575 public: 576 Track( const wp<ThreadBase>& thread, 577 const sp<Client>& client, 578 audio_stream_type_t streamType, 579 uint32_t sampleRate, 580 audio_format_t format, 581 uint32_t channelMask, 582 int frameCount, 583 const sp<IMemory>& sharedBuffer, 584 int sessionId); 585 ~Track(); 586 587 void dump(char* buffer, size_t size); 588 virtual status_t start(); 589 virtual void stop(); 590 void pause(); 591 592 void flush(); 593 void destroy(); 594 void mute(bool); 595 int name() const { 596 return mName; 597 } 598 599 audio_stream_type_t type() const { 600 return mStreamType; 601 } 602 status_t attachAuxEffect(int EffectId); 603 void setAuxBuffer(int EffectId, int32_t *buffer); 604 int32_t *auxBuffer() { return mAuxBuffer; } 605 void setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; } 606 int16_t *mainBuffer() { return mMainBuffer; } 607 int auxEffectId() { return mAuxEffectId; } 608 609 610 protected: 611 friend class ThreadBase; 612 friend class TrackHandle; 613 friend class PlaybackThread; 614 friend class MixerThread; 615 friend class DirectOutputThread; 616 617 Track(const Track&); 618 Track& operator = (const Track&); 619 620 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 621 bool isMuted() { return mMute; } 622 bool isPausing() const { 623 return mState == PAUSING; 624 } 625 bool isPaused() const { 626 return mState == PAUSED; 627 } 628 bool isReady() const; 629 void setPaused() { mState = PAUSED; } 630 void reset(); 631 632 bool isOutputTrack() const { 633 return (mStreamType == AUDIO_STREAM_CNT); 634 } 635 636 // we don't really need a lock for these 637 volatile bool mMute; 638 // FILLED state is used for suppressing volume ramp at begin of playing 639 enum {FS_FILLING, FS_FILLED, FS_ACTIVE}; 640 mutable uint8_t mFillingUpStatus; 641 int8_t mRetryCount; 642 sp<IMemory> mSharedBuffer; 643 bool mResetDone; 644 audio_stream_type_t mStreamType; 645 int mName; 646 int16_t *mMainBuffer; 647 int32_t *mAuxBuffer; 648 int mAuxEffectId; 649 bool mHasVolumeController; 650 }; // end of Track 651 652 653 // playback track 654 class OutputTrack : public Track { 655 public: 656 657 class Buffer: public AudioBufferProvider::Buffer { 658 public: 659 int16_t *mBuffer; 660 }; 661 662 OutputTrack( const wp<ThreadBase>& thread, 663 DuplicatingThread *sourceThread, 664 uint32_t sampleRate, 665 audio_format_t format, 666 uint32_t channelMask, 667 int frameCount); 668 ~OutputTrack(); 669 670 virtual status_t start(); 671 virtual void stop(); 672 bool write(int16_t* data, uint32_t frames); 673 bool bufferQueueEmpty() { return (mBufferQueue.size() == 0) ? true : false; } 674 bool isActive() { return mActive; } 675 const wp<ThreadBase>& thread() { return mThread; } 676 677 private: 678 679 enum { 680 NO_MORE_BUFFERS = 0x80000001, // same in AudioTrack.h, ok to be different value 681 }; 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* const mSourceThread; // for waitTimeMs() in write() 693 }; // end of OutputTrack 694 695 PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, 696 uint32_t device, type_t type); 697 virtual ~PlaybackThread(); 698 699 virtual status_t dump(int fd, const Vector<String16>& args); 700 701 // Thread virtuals 702 virtual status_t readyToRun(); 703 virtual void onFirstRef(); 704 705 virtual status_t initCheck() const { return (mOutput == NULL) ? NO_INIT : NO_ERROR; } 706 707 virtual uint32_t latency() const; 708 709 virtual status_t setMasterVolume(float value); 710 virtual status_t setMasterMute(bool muted); 711 712 virtual float masterVolume() const; 713 virtual bool masterMute() const; 714 715 virtual status_t setStreamVolume(audio_stream_type_t stream, float value); 716 virtual status_t setStreamMute(audio_stream_type_t stream, bool muted); 717 718 virtual float streamVolume(audio_stream_type_t stream) const; 719 virtual bool streamMute(audio_stream_type_t stream) const; 720 721 sp<Track> createTrack_l( 722 const sp<AudioFlinger::Client>& client, 723 audio_stream_type_t streamType, 724 uint32_t sampleRate, 725 audio_format_t format, 726 uint32_t channelMask, 727 int frameCount, 728 const sp<IMemory>& sharedBuffer, 729 int sessionId, 730 status_t *status); 731 732 AudioStreamOut* getOutput() const; 733 AudioStreamOut* clearOutput(); 734 virtual audio_stream_t* stream(); 735 736 void suspend() { mSuspended++; } 737 void restore() { if (mSuspended) mSuspended--; } 738 bool isSuspended() const { return (mSuspended != 0); } 739 virtual String8 getParameters(const String8& keys); 740 virtual void audioConfigChanged_l(int event, int param = 0); 741 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames); 742 int16_t *mixBuffer() { return mMixBuffer; }; 743 744 virtual void detachAuxEffect_l(int effectId); 745 status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track, 746 int EffectId); 747 status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track, 748 int EffectId); 749 750 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 751 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 752 virtual uint32_t hasAudioSession(int sessionId); 753 virtual uint32_t getStrategyForSession_l(int sessionId); 754 755 void setStreamValid(audio_stream_type_t streamType, bool valid); 756 757 struct stream_type_t { 758 stream_type_t() 759 : volume(1.0f), 760 mute(false), 761 valid(true) 762 { 763 } 764 float volume; 765 bool mute; 766 bool valid; 767 }; 768 769 protected: 770 int16_t* mMixBuffer; 771 int mSuspended; 772 int mBytesWritten; 773 private: 774 bool mMasterMute; 775 protected: 776 SortedVector< wp<Track> > mActiveTracks; 777 778 virtual int getTrackName_l() = 0; 779 virtual void deleteTrackName_l(int name) = 0; 780 virtual uint32_t activeSleepTimeUs(); 781 virtual uint32_t idleSleepTimeUs() = 0; 782 virtual uint32_t suspendSleepTimeUs() = 0; 783 784 private: 785 786 friend class AudioFlinger; 787 friend class OutputTrack; 788 friend class Track; 789 friend class TrackBase; 790 friend class MixerThread; 791 friend class DirectOutputThread; 792 friend class DuplicatingThread; 793 794 PlaybackThread(const Client&); 795 PlaybackThread& operator = (const PlaybackThread&); 796 797 status_t addTrack_l(const sp<Track>& track); 798 void destroyTrack_l(const sp<Track>& track); 799 void removeTrack_l(const sp<Track>& track); 800 801 void readOutputParameters(); 802 803 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 804 status_t dumpTracks(int fd, const Vector<String16>& args); 805 806 SortedVector< sp<Track> > mTracks; 807 // mStreamTypes[] uses 1 additional stream type internally for the OutputTrack used by DuplicatingThread 808 stream_type_t mStreamTypes[AUDIO_STREAM_CNT + 1]; 809 AudioStreamOut *mOutput; 810 float mMasterVolume; 811 nsecs_t mLastWriteTime; 812 int mNumWrites; 813 int mNumDelayedWrites; 814 bool mInWrite; 815 }; 816 817 class MixerThread : public PlaybackThread { 818 public: 819 MixerThread (const sp<AudioFlinger>& audioFlinger, 820 AudioStreamOut* output, 821 int id, 822 uint32_t device, 823 type_t type = MIXER); 824 virtual ~MixerThread(); 825 826 // Thread virtuals 827 virtual bool threadLoop(); 828 829 void invalidateTracks(audio_stream_type_t streamType); 830 virtual bool checkForNewParameters_l(); 831 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 832 833 protected: 834 mixer_state prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, 835 Vector< sp<Track> > *tracksToRemove); 836 virtual int getTrackName_l(); 837 virtual void deleteTrackName_l(int name); 838 virtual uint32_t idleSleepTimeUs(); 839 virtual uint32_t suspendSleepTimeUs(); 840 841 AudioMixer* mAudioMixer; 842 mixer_state mPrevMixerStatus; // previous status returned by prepareTracks_l() 843 }; 844 845 class DirectOutputThread : public PlaybackThread { 846 public: 847 848 DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 849 ~DirectOutputThread(); 850 851 // Thread virtuals 852 virtual bool threadLoop(); 853 854 virtual bool checkForNewParameters_l(); 855 856 protected: 857 virtual int getTrackName_l(); 858 virtual void deleteTrackName_l(int name); 859 virtual uint32_t activeSleepTimeUs(); 860 virtual uint32_t idleSleepTimeUs(); 861 virtual uint32_t suspendSleepTimeUs(); 862 863 private: 864 void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp); 865 866 float mLeftVolFloat; 867 float mRightVolFloat; 868 uint16_t mLeftVolShort; 869 uint16_t mRightVolShort; 870 }; 871 872 class DuplicatingThread : public MixerThread { 873 public: 874 DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, int id); 875 ~DuplicatingThread(); 876 877 // Thread virtuals 878 virtual bool threadLoop(); 879 void addOutputTrack(MixerThread* thread); 880 void removeOutputTrack(MixerThread* thread); 881 uint32_t waitTimeMs() { return mWaitTimeMs; } 882 protected: 883 virtual uint32_t activeSleepTimeUs(); 884 885 private: 886 bool outputsReady(SortedVector< sp<OutputTrack> > &outputTracks); 887 void updateWaitTime(); 888 889 SortedVector < sp<OutputTrack> > mOutputTracks; 890 uint32_t mWaitTimeMs; 891 }; 892 893 PlaybackThread *checkPlaybackThread_l(int output) const; 894 MixerThread *checkMixerThread_l(int output) const; 895 RecordThread *checkRecordThread_l(int input) const; 896 float streamVolumeInternal(audio_stream_type_t stream) const { return mStreamTypes[stream].volume; } 897 void audioConfigChanged_l(int event, int ioHandle, void *param2); 898 899 uint32_t nextUniqueId(); 900 status_t moveEffectChain_l(int sessionId, 901 AudioFlinger::PlaybackThread *srcThread, 902 AudioFlinger::PlaybackThread *dstThread, 903 bool reRegister); 904 PlaybackThread *primaryPlaybackThread_l(); 905 uint32_t primaryOutputDevice_l(); 906 907 friend class AudioBuffer; 908 909 class TrackHandle : public android::BnAudioTrack { 910 public: 911 TrackHandle(const sp<PlaybackThread::Track>& track); 912 virtual ~TrackHandle(); 913 virtual sp<IMemory> getCblk() const; 914 virtual status_t start(); 915 virtual void stop(); 916 virtual void flush(); 917 virtual void mute(bool); 918 virtual void pause(); 919 virtual status_t attachAuxEffect(int effectId); 920 virtual status_t onTransact( 921 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 922 private: 923 const sp<PlaybackThread::Track> mTrack; 924 }; 925 926 friend class Client; 927 friend class PlaybackThread::Track; 928 929 930 void removeClient_l(pid_t pid); 931 void removeNotificationClient(pid_t pid); 932 933 934 // record thread 935 class RecordThread : public ThreadBase, public AudioBufferProvider 936 { 937 public: 938 939 // record track 940 class RecordTrack : public TrackBase { 941 public: 942 RecordTrack(const wp<ThreadBase>& thread, 943 const sp<Client>& client, 944 uint32_t sampleRate, 945 audio_format_t format, 946 uint32_t channelMask, 947 int frameCount, 948 uint32_t flags, 949 int sessionId); 950 ~RecordTrack(); 951 952 virtual status_t start(); 953 virtual void stop(); 954 955 bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; } 956 bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; } 957 958 void dump(char* buffer, size_t size); 959 960 private: 961 friend class AudioFlinger; 962 friend class RecordThread; 963 964 RecordTrack(const RecordTrack&); 965 RecordTrack& operator = (const RecordTrack&); 966 967 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 968 969 bool mOverflow; 970 }; 971 972 973 RecordThread(const sp<AudioFlinger>& audioFlinger, 974 AudioStreamIn *input, 975 uint32_t sampleRate, 976 uint32_t channels, 977 int id, 978 uint32_t device); 979 ~RecordThread(); 980 981 virtual bool threadLoop(); 982 virtual status_t readyToRun(); 983 virtual void onFirstRef(); 984 985 virtual status_t initCheck() const { return (mInput == NULL) ? NO_INIT : NO_ERROR; } 986 sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l( 987 const sp<AudioFlinger::Client>& client, 988 uint32_t sampleRate, 989 audio_format_t format, 990 int channelMask, 991 int frameCount, 992 uint32_t flags, 993 int sessionId, 994 status_t *status); 995 996 status_t start(RecordTrack* recordTrack); 997 void stop(RecordTrack* recordTrack); 998 status_t dump(int fd, const Vector<String16>& args); 999 AudioStreamIn* getInput() const; 1000 AudioStreamIn* clearInput(); 1001 virtual audio_stream_t* stream(); 1002 1003 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 1004 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 1005 virtual bool checkForNewParameters_l(); 1006 virtual String8 getParameters(const String8& keys); 1007 virtual void audioConfigChanged_l(int event, int param = 0); 1008 void readInputParameters(); 1009 virtual unsigned int getInputFramesLost(); 1010 1011 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 1012 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 1013 virtual uint32_t hasAudioSession(int sessionId); 1014 RecordTrack* track(); 1015 1016 private: 1017 RecordThread(); 1018 AudioStreamIn *mInput; 1019 RecordTrack* mTrack; 1020 sp<RecordTrack> mActiveTrack; 1021 Condition mStartStopCond; 1022 AudioResampler *mResampler; 1023 int32_t *mRsmpOutBuffer; 1024 int16_t *mRsmpInBuffer; 1025 size_t mRsmpInIndex; 1026 size_t mInputBytes; 1027 const int mReqChannelCount; 1028 const uint32_t mReqSampleRate; 1029 ssize_t mBytesRead; 1030 }; 1031 1032 class RecordHandle : public android::BnAudioRecord { 1033 public: 1034 RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack); 1035 virtual ~RecordHandle(); 1036 virtual sp<IMemory> getCblk() const; 1037 virtual status_t start(); 1038 virtual void stop(); 1039 virtual status_t onTransact( 1040 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 1041 private: 1042 const sp<RecordThread::RecordTrack> mRecordTrack; 1043 }; 1044 1045 //--- Audio Effect Management 1046 1047 // EffectModule and EffectChain classes both have their own mutex to protect 1048 // state changes or resource modifications. Always respect the following order 1049 // if multiple mutexes must be acquired to avoid cross deadlock: 1050 // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule 1051 1052 // The EffectModule class is a wrapper object controlling the effect engine implementation 1053 // in the effect library. It prevents concurrent calls to process() and command() functions 1054 // from different client threads. It keeps a list of EffectHandle objects corresponding 1055 // to all client applications using this effect and notifies applications of effect state, 1056 // control or parameter changes. It manages the activation state machine to send appropriate 1057 // reset, enable, disable commands to effect engine and provide volume 1058 // ramping when effects are activated/deactivated. 1059 // When controlling an auxiliary effect, the EffectModule also provides an input buffer used by 1060 // the attached track(s) to accumulate their auxiliary channel. 1061 class EffectModule: public RefBase { 1062 public: 1063 EffectModule(const wp<ThreadBase>& wThread, 1064 const wp<AudioFlinger::EffectChain>& chain, 1065 effect_descriptor_t *desc, 1066 int id, 1067 int sessionId); 1068 ~EffectModule(); 1069 1070 enum effect_state { 1071 IDLE, 1072 RESTART, 1073 STARTING, 1074 ACTIVE, 1075 STOPPING, 1076 STOPPED, 1077 DESTROYED 1078 }; 1079 1080 int id() { return mId; } 1081 void process(); 1082 void updateState(); 1083 status_t command(uint32_t cmdCode, 1084 uint32_t cmdSize, 1085 void *pCmdData, 1086 uint32_t *replySize, 1087 void *pReplyData); 1088 1089 void reset_l(); 1090 status_t configure(); 1091 status_t init(); 1092 effect_state state() const { 1093 return mState; 1094 } 1095 uint32_t status() { 1096 return mStatus; 1097 } 1098 int sessionId() { 1099 return mSessionId; 1100 } 1101 status_t setEnabled(bool enabled); 1102 bool isEnabled(); 1103 bool isProcessEnabled(); 1104 1105 void setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; } 1106 int16_t *inBuffer() { return mConfig.inputCfg.buffer.s16; } 1107 void setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; } 1108 int16_t *outBuffer() { return mConfig.outputCfg.buffer.s16; } 1109 void setChain(const wp<EffectChain>& chain) { mChain = chain; } 1110 void setThread(const wp<ThreadBase>& thread) { mThread = thread; } 1111 const wp<ThreadBase>& thread() { return mThread; } 1112 1113 status_t addHandle(const sp<EffectHandle>& handle); 1114 void disconnect(const wp<EffectHandle>& handle, bool unpiniflast); 1115 size_t removeHandle (const wp<EffectHandle>& handle); 1116 1117 effect_descriptor_t& desc() { return mDescriptor; } 1118 wp<EffectChain>& chain() { return mChain; } 1119 1120 status_t setDevice(uint32_t device); 1121 status_t setVolume(uint32_t *left, uint32_t *right, bool controller); 1122 status_t setMode(audio_mode_t mode); 1123 status_t start(); 1124 status_t stop(); 1125 void setSuspended(bool suspended); 1126 bool suspended() const; 1127 1128 sp<EffectHandle> controlHandle(); 1129 1130 bool isPinned() { return mPinned; } 1131 void unPin() { mPinned = false; } 1132 1133 status_t dump(int fd, const Vector<String16>& args); 1134 1135 protected: 1136 friend class EffectHandle; 1137 friend class AudioFlinger; 1138 bool mPinned; 1139 1140 // Maximum time allocated to effect engines to complete the turn off sequence 1141 static const uint32_t MAX_DISABLE_TIME_MS = 10000; 1142 1143 EffectModule(const EffectModule&); 1144 EffectModule& operator = (const EffectModule&); 1145 1146 status_t start_l(); 1147 status_t stop_l(); 1148 1149mutable Mutex mLock; // mutex for process, commands and handles list protection 1150 wp<ThreadBase> mThread; // parent thread 1151 wp<EffectChain> mChain; // parent effect chain 1152 int mId; // this instance unique ID 1153 int mSessionId; // audio session ID 1154 effect_descriptor_t mDescriptor;// effect descriptor received from effect engine 1155 effect_config_t mConfig; // input and output audio configuration 1156 effect_handle_t mEffectInterface; // Effect module C API 1157 status_t mStatus; // initialization status 1158 effect_state mState; // current activation state 1159 Vector< wp<EffectHandle> > mHandles; // list of client handles 1160 uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after 1161 // sending disable command. 1162 uint32_t mDisableWaitCnt; // current process() calls count during disable period. 1163 bool mSuspended; // effect is suspended: temporarily disabled by framework 1164 }; 1165 1166 // The EffectHandle class implements the IEffect interface. It provides resources 1167 // to receive parameter updates, keeps track of effect control 1168 // ownership and state and has a pointer to the EffectModule object it is controlling. 1169 // There is one EffectHandle object for each application controlling (or using) 1170 // an effect module. 1171 // The EffectHandle is obtained by calling AudioFlinger::createEffect(). 1172 class EffectHandle: public android::BnEffect { 1173 public: 1174 1175 EffectHandle(const sp<EffectModule>& effect, 1176 const sp<AudioFlinger::Client>& client, 1177 const sp<IEffectClient>& effectClient, 1178 int32_t priority); 1179 virtual ~EffectHandle(); 1180 1181 // IEffect 1182 virtual status_t enable(); 1183 virtual status_t disable(); 1184 virtual status_t command(uint32_t cmdCode, 1185 uint32_t cmdSize, 1186 void *pCmdData, 1187 uint32_t *replySize, 1188 void *pReplyData); 1189 virtual void disconnect(); 1190 virtual void disconnect(bool unpiniflast); 1191 virtual sp<IMemory> getCblk() const; 1192 virtual status_t onTransact(uint32_t code, const Parcel& data, 1193 Parcel* reply, uint32_t flags); 1194 1195 1196 // Give or take control of effect module 1197 // - hasControl: true if control is given, false if removed 1198 // - signal: true client app should be signaled of change, false otherwise 1199 // - enabled: state of the effect when control is passed 1200 void setControl(bool hasControl, bool signal, bool enabled); 1201 void commandExecuted(uint32_t cmdCode, 1202 uint32_t cmdSize, 1203 void *pCmdData, 1204 uint32_t replySize, 1205 void *pReplyData); 1206 void setEnabled(bool enabled); 1207 bool enabled() { return mEnabled; } 1208 1209 // Getters 1210 int id() { return mEffect->id(); } 1211 int priority() { return mPriority; } 1212 bool hasControl() { return mHasControl; } 1213 sp<EffectModule> effect() { return mEffect; } 1214 1215 void dump(char* buffer, size_t size); 1216 1217 protected: 1218 friend class AudioFlinger; 1219 friend class EffectModule; 1220 EffectHandle(const EffectHandle&); 1221 EffectHandle& operator =(const EffectHandle&); 1222 1223 sp<EffectModule> mEffect; // pointer to controlled EffectModule 1224 sp<IEffectClient> mEffectClient; // callback interface for client notifications 1225 sp<Client> mClient; // client for shared memory allocation 1226 sp<IMemory> mCblkMemory; // shared memory for control block 1227 effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory 1228 uint8_t* mBuffer; // pointer to parameter area in shared memory 1229 int mPriority; // client application priority to control the effect 1230 bool mHasControl; // true if this handle is controlling the effect 1231 bool mEnabled; // cached enable state: needed when the effect is 1232 // restored after being suspended 1233 }; 1234 1235 // the EffectChain class represents a group of effects associated to one audio session. 1236 // There can be any number of EffectChain objects per output mixer thread (PlaybackThread). 1237 // The EffecChain with session ID 0 contains global effects applied to the output mix. 1238 // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks) 1239 // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding 1240 // in the effect process order. When attached to a track (session ID != 0), it also provide it's own 1241 // input buffer used by the track as accumulation buffer. 1242 class EffectChain: public RefBase { 1243 public: 1244 EffectChain(const wp<ThreadBase>& wThread, int sessionId); 1245 ~EffectChain(); 1246 1247 // special key used for an entry in mSuspendedEffects keyed vector 1248 // corresponding to a suspend all request. 1249 static const int kKeyForSuspendAll = 0; 1250 1251 // minimum duration during which we force calling effect process when last track on 1252 // a session is stopped or removed to allow effect tail to be rendered 1253 static const int kProcessTailDurationMs = 1000; 1254 1255 void process_l(); 1256 1257 void lock() { 1258 mLock.lock(); 1259 } 1260 void unlock() { 1261 mLock.unlock(); 1262 } 1263 1264 status_t addEffect_l(const sp<EffectModule>& handle); 1265 size_t removeEffect_l(const sp<EffectModule>& handle); 1266 1267 int sessionId() { return mSessionId; } 1268 void setSessionId(int sessionId) { mSessionId = sessionId; } 1269 1270 sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor); 1271 sp<EffectModule> getEffectFromId_l(int id); 1272 sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type); 1273 bool setVolume_l(uint32_t *left, uint32_t *right); 1274 void setDevice_l(uint32_t device); 1275 void setMode_l(audio_mode_t mode); 1276 1277 void setInBuffer(int16_t *buffer, bool ownsBuffer = false) { 1278 mInBuffer = buffer; 1279 mOwnInBuffer = ownsBuffer; 1280 } 1281 int16_t *inBuffer() { 1282 return mInBuffer; 1283 } 1284 void setOutBuffer(int16_t *buffer) { 1285 mOutBuffer = buffer; 1286 } 1287 int16_t *outBuffer() { 1288 return mOutBuffer; 1289 } 1290 1291 void incTrackCnt() { android_atomic_inc(&mTrackCnt); } 1292 void decTrackCnt() { android_atomic_dec(&mTrackCnt); } 1293 int32_t trackCnt() { return mTrackCnt;} 1294 1295 void incActiveTrackCnt() { android_atomic_inc(&mActiveTrackCnt); 1296 mTailBufferCount = mMaxTailBuffers; } 1297 void decActiveTrackCnt() { android_atomic_dec(&mActiveTrackCnt); } 1298 int32_t activeTrackCnt() { return mActiveTrackCnt;} 1299 1300 uint32_t strategy() { return mStrategy; } 1301 void setStrategy(uint32_t strategy) 1302 { mStrategy = strategy; } 1303 1304 // suspend effect of the given type 1305 void setEffectSuspended_l(const effect_uuid_t *type, 1306 bool suspend); 1307 // suspend all eligible effects 1308 void setEffectSuspendedAll_l(bool suspend); 1309 // check if effects should be suspend or restored when a given effect is enable or disabled 1310 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 1311 bool enabled); 1312 1313 status_t dump(int fd, const Vector<String16>& args); 1314 1315 protected: 1316 friend class AudioFlinger; 1317 EffectChain(const EffectChain&); 1318 EffectChain& operator =(const EffectChain&); 1319 1320 class SuspendedEffectDesc : public RefBase { 1321 public: 1322 SuspendedEffectDesc() : mRefCount(0) {} 1323 1324 int mRefCount; 1325 effect_uuid_t mType; 1326 wp<EffectModule> mEffect; 1327 }; 1328 1329 // get a list of effect modules to suspend when an effect of the type 1330 // passed is enabled. 1331 void getSuspendEligibleEffects(Vector< sp<EffectModule> > &effects); 1332 1333 // get an effect module if it is currently enable 1334 sp<EffectModule> getEffectIfEnabled(const effect_uuid_t *type); 1335 // true if the effect whose descriptor is passed can be suspended 1336 // OEMs can modify the rules implemented in this method to exclude specific effect 1337 // types or implementations from the suspend/restore mechanism. 1338 bool isEffectEligibleForSuspend(const effect_descriptor_t& desc); 1339 1340 wp<ThreadBase> mThread; // parent mixer thread 1341 Mutex mLock; // mutex protecting effect list 1342 Vector<sp<EffectModule> > mEffects; // list of effect modules 1343 int mSessionId; // audio session ID 1344 int16_t *mInBuffer; // chain input buffer 1345 int16_t *mOutBuffer; // chain output buffer 1346 volatile int32_t mActiveTrackCnt; // number of active tracks connected 1347 volatile int32_t mTrackCnt; // number of tracks connected 1348 int32_t mTailBufferCount; // current effect tail buffer count 1349 int32_t mMaxTailBuffers; // maximum effect tail buffers 1350 bool mOwnInBuffer; // true if the chain owns its input buffer 1351 int mVolumeCtrlIdx; // index of insert effect having control over volume 1352 uint32_t mLeftVolume; // previous volume on left channel 1353 uint32_t mRightVolume; // previous volume on right channel 1354 uint32_t mNewLeftVolume; // new volume on left channel 1355 uint32_t mNewRightVolume; // new volume on right channel 1356 uint32_t mStrategy; // strategy for this effect chain 1357 // mSuspendedEffects lists all effect currently suspended in the chain 1358 // use effect type UUID timelow field as key. There is no real risk of identical 1359 // timeLow fields among effect type UUIDs. 1360 KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects; 1361 }; 1362 1363 // AudioStreamOut and AudioStreamIn are immutable, so their fields are const. 1364 // For emphasis, we could also make all pointers to them be "const *", 1365 // but that would clutter the code unnecessarily. 1366 1367 struct AudioStreamOut { 1368 audio_hw_device_t* const hwDev; 1369 audio_stream_out_t* const stream; 1370 1371 AudioStreamOut(audio_hw_device_t *dev, audio_stream_out_t *out) : 1372 hwDev(dev), stream(out) {} 1373 }; 1374 1375 struct AudioStreamIn { 1376 audio_hw_device_t* const hwDev; 1377 audio_stream_in_t* const stream; 1378 1379 AudioStreamIn(audio_hw_device_t *dev, audio_stream_in_t *in) : 1380 hwDev(dev), stream(in) {} 1381 }; 1382 1383 struct AudioSessionRef { 1384 // FIXME rename parameter names when fields get "m" prefix 1385 AudioSessionRef(int sessionid_, pid_t pid_) : 1386 sessionid(sessionid_), pid(pid_), cnt(1) {} 1387 const int sessionid; 1388 const pid_t pid; 1389 int cnt; 1390 }; 1391 1392 friend class RecordThread; 1393 friend class PlaybackThread; 1394 1395 mutable Mutex mLock; 1396 1397 DefaultKeyedVector< pid_t, wp<Client> > mClients; 1398 1399 mutable Mutex mHardwareLock; 1400 audio_hw_device_t* mPrimaryHardwareDev; 1401 Vector<audio_hw_device_t*> mAudioHwDevs; 1402 mutable hardware_call_state mHardwareStatus; // for dump only 1403 1404 1405 DefaultKeyedVector< int, sp<PlaybackThread> > mPlaybackThreads; 1406 PlaybackThread::stream_type_t mStreamTypes[AUDIO_STREAM_CNT]; 1407 1408 // both are protected by mLock 1409 float mMasterVolume; 1410 bool mMasterMute; 1411 1412 DefaultKeyedVector< int, sp<RecordThread> > mRecordThreads; 1413 1414 DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients; 1415 volatile int32_t mNextUniqueId; 1416 audio_mode_t mMode; 1417 bool mBtNrecIsOff; 1418 1419 Vector<AudioSessionRef*> mAudioSessionRefs; 1420 1421 float masterVolume_l() const { return mMasterVolume; } 1422 bool masterMute_l() const { return mMasterMute; } 1423}; 1424 1425 1426// ---------------------------------------------------------------------------- 1427 1428}; // namespace android 1429 1430#endif // ANDROID_AUDIO_FLINGER_H 1431