AudioFlinger.h revision c59c004a3a6042c0990d71179f88eee2ce781e3c
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); 109 110 virtual void registerClient(const sp<IAudioFlingerClient>& client); 111 112 virtual size_t getInputBufferSize(uint32_t sampleRate, audio_format_t format, int channelCount); 113 virtual unsigned int getInputFramesLost(int ioHandle); 114 115 virtual int openOutput(uint32_t *pDevices, 116 uint32_t *pSamplingRate, 117 audio_format_t *pFormat, 118 uint32_t *pChannels, 119 uint32_t *pLatencyMs, 120 uint32_t flags); 121 122 virtual int openDuplicateOutput(int output1, int output2); 123 124 virtual status_t closeOutput(int output); 125 126 virtual status_t suspendOutput(int output); 127 128 virtual status_t restoreOutput(int output); 129 130 virtual int openInput(uint32_t *pDevices, 131 uint32_t *pSamplingRate, 132 audio_format_t *pFormat, 133 uint32_t *pChannels, 134 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); 143 144 virtual int newAudioSessionId(); 145 146 virtual void acquireAudioSessionId(int audioSession); 147 148 virtual void releaseAudioSessionId(int audioSession); 149 150 virtual status_t queryNumberEffects(uint32_t *numEffects); 151 152 virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor); 153 154 virtual status_t getEffectDescriptor(effect_uuid_t *pUuid, effect_descriptor_t *descriptor); 155 156 virtual sp<IEffect> createEffect(pid_t pid, 157 effect_descriptor_t *pDesc, 158 const sp<IEffectClient>& effectClient, 159 int32_t priority, 160 int io, 161 int sessionId, 162 status_t *status, 163 int *id, 164 int *enabled); 165 166 virtual status_t moveEffects(int sessionId, int srcOutput, int dstOutput); 167 168 enum hardware_call_state { 169 AUDIO_HW_IDLE = 0, 170 AUDIO_HW_INIT, 171 AUDIO_HW_OUTPUT_OPEN, 172 AUDIO_HW_OUTPUT_CLOSE, 173 AUDIO_HW_INPUT_OPEN, 174 AUDIO_HW_INPUT_CLOSE, 175 AUDIO_HW_STANDBY, 176 AUDIO_HW_SET_MASTER_VOLUME, 177 AUDIO_HW_GET_ROUTING, 178 AUDIO_HW_SET_ROUTING, 179 AUDIO_HW_GET_MODE, 180 AUDIO_HW_SET_MODE, 181 AUDIO_HW_GET_MIC_MUTE, 182 AUDIO_HW_SET_MIC_MUTE, 183 AUDIO_SET_VOICE_VOLUME, 184 AUDIO_SET_PARAMETER, 185 }; 186 187 // record interface 188 virtual sp<IAudioRecord> openRecord( 189 pid_t pid, 190 int input, 191 uint32_t sampleRate, 192 audio_format_t format, 193 uint32_t channelMask, 194 int frameCount, 195 uint32_t flags, 196 int *sessionId, 197 status_t *status); 198 199 virtual status_t onTransact( 200 uint32_t code, 201 const Parcel& data, 202 Parcel* reply, 203 uint32_t flags); 204 205 audio_mode_t getMode() const { return mMode; } 206 207 bool btNrecIsOff() const { return mBtNrecIsOff; } 208 209private: 210 211 AudioFlinger(); 212 virtual ~AudioFlinger(); 213 214 status_t initCheck() const; 215 virtual void onFirstRef(); 216 audio_hw_device_t* findSuitableHwDev_l(uint32_t devices); 217 void purgeStaleEffects_l(); 218 219 // Internal dump utilites. 220 status_t dumpPermissionDenial(int fd, const Vector<String16>& args); 221 status_t dumpClients(int fd, const Vector<String16>& args); 222 status_t dumpInternals(int fd, const Vector<String16>& args); 223 224 // --- Client --- 225 class Client : public RefBase { 226 public: 227 Client(const sp<AudioFlinger>& audioFlinger, pid_t pid); 228 virtual ~Client(); 229 sp<MemoryDealer> heap() const; 230 pid_t pid() const { return mPid; } 231 sp<AudioFlinger> audioFlinger() const { return mAudioFlinger; } 232 233 private: 234 Client(const Client&); 235 Client& operator = (const Client&); 236 const sp<AudioFlinger> mAudioFlinger; 237 const sp<MemoryDealer> mMemoryDealer; 238 const pid_t mPid; 239 }; 240 241 // --- Notification Client --- 242 class NotificationClient : public IBinder::DeathRecipient { 243 public: 244 NotificationClient(const sp<AudioFlinger>& audioFlinger, 245 const sp<IAudioFlingerClient>& client, 246 pid_t pid); 247 virtual ~NotificationClient(); 248 249 sp<IAudioFlingerClient> audioFlingerClient() const { return mAudioFlingerClient; } 250 251 // IBinder::DeathRecipient 252 virtual void binderDied(const wp<IBinder>& who); 253 254 private: 255 NotificationClient(const NotificationClient&); 256 NotificationClient& operator = (const NotificationClient&); 257 258 const sp<AudioFlinger> mAudioFlinger; 259 const pid_t mPid; 260 const sp<IAudioFlingerClient> mAudioFlingerClient; 261 }; 262 263 class TrackHandle; 264 class RecordHandle; 265 class RecordThread; 266 class PlaybackThread; 267 class MixerThread; 268 class DirectOutputThread; 269 class DuplicatingThread; 270 class Track; 271 class RecordTrack; 272 class EffectModule; 273 class EffectHandle; 274 class EffectChain; 275 struct AudioStreamOut; 276 struct AudioStreamIn; 277 278 class ThreadBase : public Thread { 279 public: 280 281 enum type_t { 282 MIXER, // Thread class is MixerThread 283 DIRECT, // Thread class is DirectOutputThread 284 DUPLICATING, // Thread class is DuplicatingThread 285 RECORD // Thread class is RecordThread 286 }; 287 288 ThreadBase (const sp<AudioFlinger>& audioFlinger, int id, uint32_t device, type_t type); 289 virtual ~ThreadBase(); 290 291 status_t dumpBase(int fd, const Vector<String16>& args); 292 status_t dumpEffectChains(int fd, const Vector<String16>& args); 293 294 void clearPowerManager(); 295 296 // base for record and playback 297 class TrackBase : public AudioBufferProvider, public RefBase { 298 299 public: 300 enum track_state { 301 IDLE, 302 TERMINATED, 303 STOPPED, 304 RESUMING, 305 ACTIVE, 306 PAUSING, 307 PAUSED 308 }; 309 310 enum track_flags { 311 STEPSERVER_FAILED = 0x01, // StepServer could not acquire cblk->lock mutex 312 SYSTEM_FLAGS_MASK = 0x0000ffffUL, 313 // The upper 16 bits are used for track-specific flags. 314 }; 315 316 TrackBase(const wp<ThreadBase>& thread, 317 const sp<Client>& client, 318 uint32_t sampleRate, 319 audio_format_t format, 320 uint32_t channelMask, 321 int frameCount, 322 uint32_t flags, 323 const sp<IMemory>& sharedBuffer, 324 int sessionId); 325 ~TrackBase(); 326 327 virtual status_t start() = 0; 328 virtual void stop() = 0; 329 sp<IMemory> getCblk() const { return mCblkMemory; } 330 audio_track_cblk_t* cblk() const { return mCblk; } 331 int sessionId() const { return mSessionId; } 332 333 protected: 334 friend class ThreadBase; 335 friend class RecordHandle; 336 friend class PlaybackThread; 337 friend class RecordThread; 338 friend class MixerThread; 339 friend class DirectOutputThread; 340 341 TrackBase(const TrackBase&); 342 TrackBase& operator = (const TrackBase&); 343 344 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0; 345 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 346 347 audio_format_t format() const { 348 return mFormat; 349 } 350 351 int channelCount() const { return mChannelCount; } 352 353 uint32_t channelMask() const { return mChannelMask; } 354 355 int sampleRate() const; // FIXME inline after cblk sr moved 356 357 void* getBuffer(uint32_t offset, uint32_t frames) const; 358 359 bool isStopped() const { 360 return mState == STOPPED; 361 } 362 363 bool isTerminated() const { 364 return mState == TERMINATED; 365 } 366 367 bool step(); 368 void reset(); 369 370 const wp<ThreadBase> mThread; 371 /*const*/ sp<Client> mClient; // see explanation at ~TrackBase() why not const 372 sp<IMemory> mCblkMemory; 373 audio_track_cblk_t* mCblk; 374 void* mBuffer; 375 void* mBufferEnd; 376 uint32_t mFrameCount; 377 // we don't really need a lock for these 378 track_state mState; 379 int mClientTid; 380 const audio_format_t mFormat; 381 uint32_t mFlags; 382 const int mSessionId; 383 uint8_t mChannelCount; 384 uint32_t mChannelMask; 385 }; 386 387 class ConfigEvent { 388 public: 389 ConfigEvent() : mEvent(0), mParam(0) {} 390 391 int mEvent; 392 int mParam; 393 }; 394 395 class PMDeathRecipient : public IBinder::DeathRecipient { 396 public: 397 PMDeathRecipient(const wp<ThreadBase>& thread) : mThread(thread) {} 398 virtual ~PMDeathRecipient() {} 399 400 // IBinder::DeathRecipient 401 virtual void binderDied(const wp<IBinder>& who); 402 403 private: 404 PMDeathRecipient(const PMDeathRecipient&); 405 PMDeathRecipient& operator = (const PMDeathRecipient&); 406 407 wp<ThreadBase> mThread; 408 }; 409 410 virtual status_t initCheck() const = 0; 411 type_t type() const { return mType; } 412 uint32_t sampleRate() const { return mSampleRate; } 413 int channelCount() const { return mChannelCount; } 414 audio_format_t format() const { return mFormat; } 415 size_t frameCount() const { return mFrameCount; } 416 void wakeUp() { mWaitWorkCV.broadcast(); } 417 void exit(); 418 virtual bool checkForNewParameters_l() = 0; 419 virtual status_t setParameters(const String8& keyValuePairs); 420 virtual String8 getParameters(const String8& keys) = 0; 421 virtual void audioConfigChanged_l(int event, int param = 0) = 0; 422 void sendConfigEvent(int event, int param = 0); 423 void sendConfigEvent_l(int event, int param = 0); 424 void processConfigEvents(); 425 int id() const { return mId;} 426 bool standby() { return mStandby; } 427 uint32_t device() { return mDevice; } 428 virtual audio_stream_t* stream() = 0; 429 430 sp<EffectHandle> createEffect_l( 431 const sp<AudioFlinger::Client>& client, 432 const sp<IEffectClient>& effectClient, 433 int32_t priority, 434 int sessionId, 435 effect_descriptor_t *desc, 436 int *enabled, 437 status_t *status); 438 void disconnectEffect(const sp< EffectModule>& effect, 439 const wp<EffectHandle>& handle, 440 bool unpiniflast); 441 442 // return values for hasAudioSession (bit field) 443 enum effect_state { 444 EFFECT_SESSION = 0x1, // the audio session corresponds to at least one 445 // effect 446 TRACK_SESSION = 0x2 // the audio session corresponds to at least one 447 // track 448 }; 449 450 // get effect chain corresponding to session Id. 451 sp<EffectChain> getEffectChain(int sessionId); 452 // same as getEffectChain() but must be called with ThreadBase mutex locked 453 sp<EffectChain> getEffectChain_l(int sessionId); 454 // add an effect chain to the chain list (mEffectChains) 455 virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0; 456 // remove an effect chain from the chain list (mEffectChains) 457 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain) = 0; 458 // lock mall effect chains Mutexes. Must be called before releasing the 459 // ThreadBase mutex before processing the mixer and effects. This guarantees the 460 // integrity of the chains during the process. 461 void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains); 462 // unlock effect chains after process 463 void unlockEffectChains(Vector<sp <EffectChain> >& effectChains); 464 // set audio mode to all effect chains 465 void setMode(audio_mode_t mode); 466 // get effect module with corresponding ID on specified audio session 467 sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId); 468 // add and effect module. Also creates the effect chain is none exists for 469 // the effects audio session 470 status_t addEffect_l(const sp< EffectModule>& effect); 471 // remove and effect module. Also removes the effect chain is this was the last 472 // effect 473 void removeEffect_l(const sp< EffectModule>& effect); 474 // detach all tracks connected to an auxiliary effect 475 virtual void detachAuxEffect_l(int effectId) {} 476 // returns either EFFECT_SESSION if effects on this audio session exist in one 477 // chain, or TRACK_SESSION if tracks on this audio session exist, or both 478 virtual uint32_t hasAudioSession(int sessionId) = 0; 479 // the value returned by default implementation is not important as the 480 // strategy is only meaningful for PlaybackThread which implements this method 481 virtual uint32_t getStrategyForSession_l(int sessionId) { return 0; } 482 483 // suspend or restore effect according to the type of effect passed. a NULL 484 // type pointer means suspend all effects in the session 485 void setEffectSuspended(const effect_uuid_t *type, 486 bool suspend, 487 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 488 // check if some effects must be suspended/restored when an effect is enabled 489 // or disabled 490 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 491 bool enabled, 492 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 493 void checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect, 494 bool enabled, 495 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 496 mutable Mutex mLock; 497 498 protected: 499 500 // entry describing an effect being suspended in mSuspendedSessions keyed vector 501 class SuspendedSessionDesc : public RefBase { 502 public: 503 SuspendedSessionDesc() : mRefCount(0) {} 504 505 int mRefCount; // number of active suspend requests 506 effect_uuid_t mType; // effect type UUID 507 }; 508 509 void acquireWakeLock(); 510 void acquireWakeLock_l(); 511 void releaseWakeLock(); 512 void releaseWakeLock_l(); 513 void setEffectSuspended_l(const effect_uuid_t *type, 514 bool suspend, 515 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 516 // updated mSuspendedSessions when an effect suspended or restored 517 void updateSuspendedSessions_l(const effect_uuid_t *type, 518 bool suspend, 519 int sessionId); 520 // check if some effects must be suspended when an effect chain is added 521 void checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain); 522 523 friend class AudioFlinger; 524 friend class Track; 525 friend class TrackBase; 526 friend class PlaybackThread; 527 friend class MixerThread; 528 friend class DirectOutputThread; 529 friend class DuplicatingThread; 530 friend class RecordThread; 531 friend class RecordTrack; 532 533 const type_t mType; 534 Condition mWaitWorkCV; 535 const sp<AudioFlinger> mAudioFlinger; 536 uint32_t mSampleRate; 537 size_t mFrameCount; 538 uint32_t mChannelMask; 539 uint16_t mChannelCount; 540 size_t mFrameSize; 541 audio_format_t mFormat; 542 Condition mParamCond; 543 Vector<String8> mNewParameters; 544 status_t mParamStatus; 545 Vector<ConfigEvent> mConfigEvents; 546 bool mStandby; 547 int mId; 548 bool mExiting; 549 Vector< sp<EffectChain> > mEffectChains; 550 uint32_t mDevice; // output device for PlaybackThread 551 // input + output devices for RecordThread 552 static const int kNameLength = 32; 553 char mName[kNameLength]; 554 sp<IPowerManager> mPowerManager; 555 sp<IBinder> mWakeLockToken; 556 const sp<PMDeathRecipient> mDeathRecipient; 557 // list of suspended effects per session and per type. The first vector is 558 // keyed by session ID, the second by type UUID timeLow field 559 KeyedVector< int, KeyedVector< int, sp<SuspendedSessionDesc> > > mSuspendedSessions; 560 }; 561 562 // --- PlaybackThread --- 563 class PlaybackThread : public ThreadBase { 564 public: 565 566 enum mixer_state { 567 MIXER_IDLE, 568 MIXER_TRACKS_ENABLED, 569 MIXER_TRACKS_READY 570 }; 571 572 // playback track 573 class Track : public TrackBase { 574 public: 575 Track( const wp<ThreadBase>& thread, 576 const sp<Client>& client, 577 audio_stream_type_t streamType, 578 uint32_t sampleRate, 579 audio_format_t format, 580 uint32_t channelMask, 581 int frameCount, 582 const sp<IMemory>& sharedBuffer, 583 int sessionId); 584 ~Track(); 585 586 void dump(char* buffer, size_t size); 587 virtual status_t start(); 588 virtual void stop(); 589 void pause(); 590 591 void flush(); 592 void destroy(); 593 void mute(bool); 594 int name() const { 595 return mName; 596 } 597 598 audio_stream_type_t type() const { 599 return mStreamType; 600 } 601 status_t attachAuxEffect(int EffectId); 602 void setAuxBuffer(int EffectId, int32_t *buffer); 603 int32_t *auxBuffer() const { return mAuxBuffer; } 604 void setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; } 605 int16_t *mainBuffer() const { return mMainBuffer; } 606 int auxEffectId() const { return mAuxEffectId; } 607 608 609 protected: 610 friend class ThreadBase; 611 friend class TrackHandle; 612 friend class PlaybackThread; 613 friend class MixerThread; 614 friend class DirectOutputThread; 615 616 Track(const Track&); 617 Track& operator = (const Track&); 618 619 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 620 bool isMuted() const { return mMute; } 621 bool isPausing() const { 622 return mState == PAUSING; 623 } 624 bool isPaused() const { 625 return mState == PAUSED; 626 } 627 bool isReady() const; 628 void setPaused() { mState = PAUSED; } 629 void reset(); 630 631 bool isOutputTrack() const { 632 return (mStreamType == AUDIO_STREAM_CNT); 633 } 634 635 // we don't really need a lock for these 636 volatile bool mMute; 637 // FILLED state is used for suppressing volume ramp at begin of playing 638 enum {FS_FILLING, FS_FILLED, FS_ACTIVE}; 639 mutable uint8_t mFillingUpStatus; 640 int8_t mRetryCount; 641 sp<IMemory> mSharedBuffer; 642 bool mResetDone; 643 audio_stream_type_t mStreamType; 644 int mName; 645 int16_t *mMainBuffer; 646 int32_t *mAuxBuffer; 647 int mAuxEffectId; 648 bool mHasVolumeController; 649 }; // end of Track 650 651 652 // playback track 653 class OutputTrack : public Track { 654 public: 655 656 class Buffer: public AudioBufferProvider::Buffer { 657 public: 658 int16_t *mBuffer; 659 }; 660 661 OutputTrack( const wp<ThreadBase>& thread, 662 DuplicatingThread *sourceThread, 663 uint32_t sampleRate, 664 audio_format_t format, 665 uint32_t channelMask, 666 int frameCount); 667 ~OutputTrack(); 668 669 virtual status_t start(); 670 virtual void stop(); 671 bool write(int16_t* data, uint32_t frames); 672 bool bufferQueueEmpty() const { return (mBufferQueue.size() == 0) ? true : false; } 673 bool isActive() const { return mActive; } 674 const wp<ThreadBase>& thread() const { return mThread; } 675 676 private: 677 678 enum { 679 NO_MORE_BUFFERS = 0x80000001, // same in AudioTrack.h, ok to be different value 680 }; 681 682 status_t obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs); 683 void clearBufferQueue(); 684 685 // Maximum number of pending buffers allocated by OutputTrack::write() 686 static const uint8_t kMaxOverFlowBuffers = 10; 687 688 Vector < Buffer* > mBufferQueue; 689 AudioBufferProvider::Buffer mOutBuffer; 690 bool mActive; 691 DuplicatingThread* const mSourceThread; // for waitTimeMs() in write() 692 }; // end of OutputTrack 693 694 PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, 695 uint32_t device, type_t type); 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 == NULL) ? 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 { return mMasterVolume; } 712 virtual bool masterMute() const { return mMasterMute; } 713 714 virtual status_t setStreamVolume(audio_stream_type_t stream, float value); 715 virtual status_t setStreamMute(audio_stream_type_t stream, bool muted); 716 717 virtual float streamVolume(audio_stream_type_t stream) const; 718 virtual bool streamMute(audio_stream_type_t stream) const; 719 720 sp<Track> createTrack_l( 721 const sp<AudioFlinger::Client>& client, 722 audio_stream_type_t streamType, 723 uint32_t sampleRate, 724 audio_format_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() const; 732 AudioStreamOut* clearOutput(); 733 virtual audio_stream_t* stream(); 734 735 void suspend() { mSuspended++; } 736 void restore() { if (mSuspended) mSuspended--; } 737 bool isSuspended() const { 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() const { 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 void setStreamValid(audio_stream_type_t streamType, bool valid); 755 756 struct stream_type_t { 757 stream_type_t() 758 : volume(1.0f), 759 mute(false), 760 valid(true) 761 { 762 } 763 float volume; 764 bool mute; 765 bool valid; 766 }; 767 768 protected: 769 int16_t* mMixBuffer; 770 int mSuspended; 771 int mBytesWritten; 772 private: 773 bool mMasterMute; 774 protected: 775 SortedVector< wp<Track> > mActiveTracks; 776 777 virtual int getTrackName_l() = 0; 778 virtual void deleteTrackName_l(int name) = 0; 779 virtual uint32_t activeSleepTimeUs(); 780 virtual uint32_t idleSleepTimeUs() = 0; 781 virtual uint32_t suspendSleepTimeUs() = 0; 782 783 private: 784 785 friend class AudioFlinger; 786 friend class OutputTrack; 787 friend class Track; 788 friend class TrackBase; 789 friend class MixerThread; 790 friend class DirectOutputThread; 791 friend class DuplicatingThread; 792 793 PlaybackThread(const Client&); 794 PlaybackThread& operator = (const PlaybackThread&); 795 796 status_t addTrack_l(const sp<Track>& track); 797 void destroyTrack_l(const sp<Track>& track); 798 void removeTrack_l(const sp<Track>& track); 799 800 void readOutputParameters(); 801 802 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 803 status_t dumpTracks(int fd, const Vector<String16>& args); 804 805 SortedVector< sp<Track> > mTracks; 806 // mStreamTypes[] uses 1 additional stream type internally for the OutputTrack used by DuplicatingThread 807 stream_type_t mStreamTypes[AUDIO_STREAM_CNT + 1]; 808 AudioStreamOut *mOutput; 809 float mMasterVolume; 810 nsecs_t mLastWriteTime; 811 int mNumWrites; 812 int mNumDelayedWrites; 813 bool mInWrite; 814 }; 815 816 class MixerThread : public PlaybackThread { 817 public: 818 MixerThread (const sp<AudioFlinger>& audioFlinger, 819 AudioStreamOut* output, 820 int id, 821 uint32_t device, 822 type_t type = MIXER); 823 virtual ~MixerThread(); 824 825 // Thread virtuals 826 virtual bool threadLoop(); 827 828 void invalidateTracks(audio_stream_type_t streamType); 829 virtual bool checkForNewParameters_l(); 830 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 831 832 protected: 833 mixer_state prepareTracks_l(const SortedVector< wp<Track> >& activeTracks, 834 Vector< sp<Track> > *tracksToRemove); 835 virtual int getTrackName_l(); 836 virtual void deleteTrackName_l(int name); 837 virtual uint32_t idleSleepTimeUs(); 838 virtual uint32_t suspendSleepTimeUs(); 839 840 AudioMixer* mAudioMixer; 841 mixer_state mPrevMixerStatus; // previous status returned by prepareTracks_l() 842 }; 843 844 class DirectOutputThread : public PlaybackThread { 845 public: 846 847 DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device); 848 ~DirectOutputThread(); 849 850 // Thread virtuals 851 virtual bool threadLoop(); 852 853 virtual bool checkForNewParameters_l(); 854 855 protected: 856 virtual int getTrackName_l(); 857 virtual void deleteTrackName_l(int name); 858 virtual uint32_t activeSleepTimeUs(); 859 virtual uint32_t idleSleepTimeUs(); 860 virtual uint32_t suspendSleepTimeUs(); 861 862 private: 863 void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp); 864 865 float mLeftVolFloat; 866 float mRightVolFloat; 867 uint16_t mLeftVolShort; 868 uint16_t mRightVolShort; 869 }; 870 871 class DuplicatingThread : public MixerThread { 872 public: 873 DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, int id); 874 ~DuplicatingThread(); 875 876 // Thread virtuals 877 virtual bool threadLoop(); 878 void addOutputTrack(MixerThread* thread); 879 void removeOutputTrack(MixerThread* thread); 880 uint32_t waitTimeMs() { return mWaitTimeMs; } 881 protected: 882 virtual uint32_t activeSleepTimeUs(); 883 884 private: 885 bool outputsReady(SortedVector< sp<OutputTrack> > &outputTracks); 886 void updateWaitTime(); 887 888 SortedVector < sp<OutputTrack> > mOutputTracks; 889 uint32_t mWaitTimeMs; 890 }; 891 892 PlaybackThread *checkPlaybackThread_l(int output) const; 893 MixerThread *checkMixerThread_l(int output) const; 894 RecordThread *checkRecordThread_l(int input) const; 895 float streamVolumeInternal(audio_stream_type_t stream) const { return mStreamTypes[stream].volume; } 896 void audioConfigChanged_l(int event, int ioHandle, void *param2); 897 898 uint32_t nextUniqueId(); 899 status_t moveEffectChain_l(int sessionId, 900 AudioFlinger::PlaybackThread *srcThread, 901 AudioFlinger::PlaybackThread *dstThread, 902 bool reRegister); 903 PlaybackThread *primaryPlaybackThread_l(); 904 uint32_t primaryOutputDevice_l(); 905 906 friend class AudioBuffer; 907 908 class TrackHandle : public android::BnAudioTrack { 909 public: 910 TrackHandle(const sp<PlaybackThread::Track>& track); 911 virtual ~TrackHandle(); 912 virtual sp<IMemory> getCblk() const; 913 virtual status_t start(); 914 virtual void stop(); 915 virtual void flush(); 916 virtual void mute(bool); 917 virtual void pause(); 918 virtual status_t attachAuxEffect(int effectId); 919 virtual status_t onTransact( 920 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 921 private: 922 const sp<PlaybackThread::Track> mTrack; 923 }; 924 925 friend class Client; 926 friend class PlaybackThread::Track; 927 928 929 void removeClient_l(pid_t pid); 930 void removeNotificationClient(pid_t pid); 931 932 933 // record thread 934 class RecordThread : public ThreadBase, public AudioBufferProvider 935 { 936 public: 937 938 // record track 939 class RecordTrack : public TrackBase { 940 public: 941 RecordTrack(const wp<ThreadBase>& thread, 942 const sp<Client>& client, 943 uint32_t sampleRate, 944 audio_format_t format, 945 uint32_t channelMask, 946 int frameCount, 947 uint32_t flags, 948 int sessionId); 949 ~RecordTrack(); 950 951 virtual status_t start(); 952 virtual void stop(); 953 954 bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; } 955 bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; } 956 957 void dump(char* buffer, size_t size); 958 959 private: 960 friend class AudioFlinger; 961 friend class RecordThread; 962 963 RecordTrack(const RecordTrack&); 964 RecordTrack& operator = (const RecordTrack&); 965 966 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 967 968 bool mOverflow; 969 }; 970 971 972 RecordThread(const sp<AudioFlinger>& audioFlinger, 973 AudioStreamIn *input, 974 uint32_t sampleRate, 975 uint32_t channels, 976 int id, 977 uint32_t device); 978 ~RecordThread(); 979 980 virtual bool threadLoop(); 981 virtual status_t readyToRun(); 982 virtual void onFirstRef(); 983 984 virtual status_t initCheck() const { return (mInput == NULL) ? NO_INIT : NO_ERROR; } 985 sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l( 986 const sp<AudioFlinger::Client>& client, 987 uint32_t sampleRate, 988 audio_format_t format, 989 int channelMask, 990 int frameCount, 991 uint32_t flags, 992 int sessionId, 993 status_t *status); 994 995 status_t start(RecordTrack* recordTrack); 996 void stop(RecordTrack* recordTrack); 997 status_t dump(int fd, const Vector<String16>& args); 998 AudioStreamIn* getInput() const; 999 AudioStreamIn* clearInput(); 1000 virtual audio_stream_t* stream(); 1001 1002 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer); 1003 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 1004 virtual bool checkForNewParameters_l(); 1005 virtual String8 getParameters(const String8& keys); 1006 virtual void audioConfigChanged_l(int event, int param = 0); 1007 void readInputParameters(); 1008 virtual unsigned int getInputFramesLost(); 1009 1010 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 1011 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 1012 virtual uint32_t hasAudioSession(int sessionId); 1013 RecordTrack* track(); 1014 1015 private: 1016 RecordThread(); 1017 AudioStreamIn *mInput; 1018 RecordTrack* mTrack; 1019 sp<RecordTrack> mActiveTrack; 1020 Condition mStartStopCond; 1021 AudioResampler *mResampler; 1022 int32_t *mRsmpOutBuffer; 1023 int16_t *mRsmpInBuffer; 1024 size_t mRsmpInIndex; 1025 size_t mInputBytes; 1026 const int mReqChannelCount; 1027 const uint32_t mReqSampleRate; 1028 ssize_t mBytesRead; 1029 }; 1030 1031 class RecordHandle : public android::BnAudioRecord { 1032 public: 1033 RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack); 1034 virtual ~RecordHandle(); 1035 virtual sp<IMemory> getCblk() const; 1036 virtual status_t start(); 1037 virtual void stop(); 1038 virtual status_t onTransact( 1039 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 1040 private: 1041 const sp<RecordThread::RecordTrack> mRecordTrack; 1042 }; 1043 1044 //--- Audio Effect Management 1045 1046 // EffectModule and EffectChain classes both have their own mutex to protect 1047 // state changes or resource modifications. Always respect the following order 1048 // if multiple mutexes must be acquired to avoid cross deadlock: 1049 // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule 1050 1051 // The EffectModule class is a wrapper object controlling the effect engine implementation 1052 // in the effect library. It prevents concurrent calls to process() and command() functions 1053 // from different client threads. It keeps a list of EffectHandle objects corresponding 1054 // to all client applications using this effect and notifies applications of effect state, 1055 // control or parameter changes. It manages the activation state machine to send appropriate 1056 // reset, enable, disable commands to effect engine and provide volume 1057 // ramping when effects are activated/deactivated. 1058 // When controlling an auxiliary effect, the EffectModule also provides an input buffer used by 1059 // the attached track(s) to accumulate their auxiliary channel. 1060 class EffectModule: public RefBase { 1061 public: 1062 EffectModule(const wp<ThreadBase>& wThread, 1063 const wp<AudioFlinger::EffectChain>& chain, 1064 effect_descriptor_t *desc, 1065 int id, 1066 int sessionId); 1067 ~EffectModule(); 1068 1069 enum effect_state { 1070 IDLE, 1071 RESTART, 1072 STARTING, 1073 ACTIVE, 1074 STOPPING, 1075 STOPPED, 1076 DESTROYED 1077 }; 1078 1079 int id() const { return mId; } 1080 void process(); 1081 void updateState(); 1082 status_t command(uint32_t cmdCode, 1083 uint32_t cmdSize, 1084 void *pCmdData, 1085 uint32_t *replySize, 1086 void *pReplyData); 1087 1088 void reset_l(); 1089 status_t configure(); 1090 status_t init(); 1091 effect_state state() const { 1092 return mState; 1093 } 1094 uint32_t status() { 1095 return mStatus; 1096 } 1097 int sessionId() const { 1098 return mSessionId; 1099 } 1100 status_t setEnabled(bool enabled); 1101 bool isEnabled() const; 1102 bool isProcessEnabled() const; 1103 1104 void setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; } 1105 int16_t *inBuffer() { return mConfig.inputCfg.buffer.s16; } 1106 void setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; } 1107 int16_t *outBuffer() { return mConfig.outputCfg.buffer.s16; } 1108 void setChain(const wp<EffectChain>& chain) { mChain = chain; } 1109 void setThread(const wp<ThreadBase>& thread) { mThread = thread; } 1110 const wp<ThreadBase>& thread() { return mThread; } 1111 1112 status_t addHandle(const sp<EffectHandle>& handle); 1113 void disconnect(const wp<EffectHandle>& handle, bool unpiniflast); 1114 size_t removeHandle (const wp<EffectHandle>& handle); 1115 1116 effect_descriptor_t& desc() { return mDescriptor; } 1117 wp<EffectChain>& chain() { return mChain; } 1118 1119 status_t setDevice(uint32_t device); 1120 status_t setVolume(uint32_t *left, uint32_t *right, bool controller); 1121 status_t setMode(audio_mode_t mode); 1122 status_t start(); 1123 status_t stop(); 1124 void setSuspended(bool suspended); 1125 bool suspended() const; 1126 1127 sp<EffectHandle> controlHandle(); 1128 1129 bool isPinned() const { return mPinned; } 1130 void unPin() { mPinned = false; } 1131 1132 status_t dump(int fd, const Vector<String16>& args); 1133 1134 protected: 1135 friend class EffectHandle; 1136 friend class AudioFlinger; 1137 bool mPinned; 1138 1139 // Maximum time allocated to effect engines to complete the turn off sequence 1140 static const uint32_t MAX_DISABLE_TIME_MS = 10000; 1141 1142 EffectModule(const EffectModule&); 1143 EffectModule& operator = (const EffectModule&); 1144 1145 status_t start_l(); 1146 status_t stop_l(); 1147 1148mutable Mutex mLock; // mutex for process, commands and handles list protection 1149 wp<ThreadBase> mThread; // parent thread 1150 wp<EffectChain> mChain; // parent effect chain 1151 int mId; // this instance unique ID 1152 int mSessionId; // audio session ID 1153 effect_descriptor_t mDescriptor;// effect descriptor received from effect engine 1154 effect_config_t mConfig; // input and output audio configuration 1155 effect_handle_t mEffectInterface; // Effect module C API 1156 status_t mStatus; // initialization status 1157 effect_state mState; // current activation state 1158 Vector< wp<EffectHandle> > mHandles; // list of client handles 1159 uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after 1160 // sending disable command. 1161 uint32_t mDisableWaitCnt; // current process() calls count during disable period. 1162 bool mSuspended; // effect is suspended: temporarily disabled by framework 1163 }; 1164 1165 // The EffectHandle class implements the IEffect interface. It provides resources 1166 // to receive parameter updates, keeps track of effect control 1167 // ownership and state and has a pointer to the EffectModule object it is controlling. 1168 // There is one EffectHandle object for each application controlling (or using) 1169 // an effect module. 1170 // The EffectHandle is obtained by calling AudioFlinger::createEffect(). 1171 class EffectHandle: public android::BnEffect { 1172 public: 1173 1174 EffectHandle(const sp<EffectModule>& effect, 1175 const sp<AudioFlinger::Client>& client, 1176 const sp<IEffectClient>& effectClient, 1177 int32_t priority); 1178 virtual ~EffectHandle(); 1179 1180 // IEffect 1181 virtual status_t enable(); 1182 virtual status_t disable(); 1183 virtual status_t command(uint32_t cmdCode, 1184 uint32_t cmdSize, 1185 void *pCmdData, 1186 uint32_t *replySize, 1187 void *pReplyData); 1188 virtual void disconnect(); 1189 virtual void disconnect(bool unpiniflast); 1190 virtual sp<IMemory> getCblk() const { return mCblkMemory; } 1191 virtual status_t onTransact(uint32_t code, const Parcel& data, 1192 Parcel* reply, uint32_t flags); 1193 1194 1195 // Give or take control of effect module 1196 // - hasControl: true if control is given, false if removed 1197 // - signal: true client app should be signaled of change, false otherwise 1198 // - enabled: state of the effect when control is passed 1199 void setControl(bool hasControl, bool signal, bool enabled); 1200 void commandExecuted(uint32_t cmdCode, 1201 uint32_t cmdSize, 1202 void *pCmdData, 1203 uint32_t replySize, 1204 void *pReplyData); 1205 void setEnabled(bool enabled); 1206 bool enabled() const { return mEnabled; } 1207 1208 // Getters 1209 int id() const { return mEffect->id(); } 1210 int priority() const { return mPriority; } 1211 bool hasControl() const { return mHasControl; } 1212 sp<EffectModule> effect() const { return mEffect; } 1213 1214 void dump(char* buffer, size_t size); 1215 1216 protected: 1217 friend class AudioFlinger; 1218 friend class EffectModule; 1219 EffectHandle(const EffectHandle&); 1220 EffectHandle& operator =(const EffectHandle&); 1221 1222 sp<EffectModule> mEffect; // pointer to controlled EffectModule 1223 sp<IEffectClient> mEffectClient; // callback interface for client notifications 1224 sp<Client> mClient; // client for shared memory allocation 1225 sp<IMemory> mCblkMemory; // shared memory for control block 1226 effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory 1227 uint8_t* mBuffer; // pointer to parameter area in shared memory 1228 int mPriority; // client application priority to control the effect 1229 bool mHasControl; // true if this handle is controlling the effect 1230 bool mEnabled; // cached enable state: needed when the effect is 1231 // restored after being suspended 1232 }; 1233 1234 // the EffectChain class represents a group of effects associated to one audio session. 1235 // There can be any number of EffectChain objects per output mixer thread (PlaybackThread). 1236 // The EffecChain with session ID 0 contains global effects applied to the output mix. 1237 // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks) 1238 // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding 1239 // in the effect process order. When attached to a track (session ID != 0), it also provide it's own 1240 // input buffer used by the track as accumulation buffer. 1241 class EffectChain: public RefBase { 1242 public: 1243 EffectChain(const wp<ThreadBase>& wThread, int sessionId); 1244 ~EffectChain(); 1245 1246 // special key used for an entry in mSuspendedEffects keyed vector 1247 // corresponding to a suspend all request. 1248 static const int kKeyForSuspendAll = 0; 1249 1250 // minimum duration during which we force calling effect process when last track on 1251 // a session is stopped or removed to allow effect tail to be rendered 1252 static const int kProcessTailDurationMs = 1000; 1253 1254 void process_l(); 1255 1256 void lock() { 1257 mLock.lock(); 1258 } 1259 void unlock() { 1260 mLock.unlock(); 1261 } 1262 1263 status_t addEffect_l(const sp<EffectModule>& handle); 1264 size_t removeEffect_l(const sp<EffectModule>& handle); 1265 1266 int sessionId() const { return mSessionId; } 1267 void setSessionId(int sessionId) { mSessionId = sessionId; } 1268 1269 sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor); 1270 sp<EffectModule> getEffectFromId_l(int id); 1271 sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type); 1272 bool setVolume_l(uint32_t *left, uint32_t *right); 1273 void setDevice_l(uint32_t device); 1274 void setMode_l(audio_mode_t mode); 1275 1276 void setInBuffer(int16_t *buffer, bool ownsBuffer = false) { 1277 mInBuffer = buffer; 1278 mOwnInBuffer = ownsBuffer; 1279 } 1280 int16_t *inBuffer() const { 1281 return mInBuffer; 1282 } 1283 void setOutBuffer(int16_t *buffer) { 1284 mOutBuffer = buffer; 1285 } 1286 int16_t *outBuffer() const { 1287 return mOutBuffer; 1288 } 1289 1290 void incTrackCnt() { android_atomic_inc(&mTrackCnt); } 1291 void decTrackCnt() { android_atomic_dec(&mTrackCnt); } 1292 int32_t trackCnt() const { return mTrackCnt;} 1293 1294 void incActiveTrackCnt() { android_atomic_inc(&mActiveTrackCnt); 1295 mTailBufferCount = mMaxTailBuffers; } 1296 void decActiveTrackCnt() { android_atomic_dec(&mActiveTrackCnt); } 1297 int32_t activeTrackCnt() const { return mActiveTrackCnt;} 1298 1299 uint32_t strategy() const { return mStrategy; } 1300 void setStrategy(uint32_t strategy) 1301 { mStrategy = strategy; } 1302 1303 // suspend effect of the given type 1304 void setEffectSuspended_l(const effect_uuid_t *type, 1305 bool suspend); 1306 // suspend all eligible effects 1307 void setEffectSuspendedAll_l(bool suspend); 1308 // check if effects should be suspend or restored when a given effect is enable or disabled 1309 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 1310 bool enabled); 1311 1312 status_t dump(int fd, const Vector<String16>& args); 1313 1314 protected: 1315 friend class AudioFlinger; 1316 EffectChain(const EffectChain&); 1317 EffectChain& operator =(const EffectChain&); 1318 1319 class SuspendedEffectDesc : public RefBase { 1320 public: 1321 SuspendedEffectDesc() : mRefCount(0) {} 1322 1323 int mRefCount; 1324 effect_uuid_t mType; 1325 wp<EffectModule> mEffect; 1326 }; 1327 1328 // get a list of effect modules to suspend when an effect of the type 1329 // passed is enabled. 1330 void getSuspendEligibleEffects(Vector< sp<EffectModule> > &effects); 1331 1332 // get an effect module if it is currently enable 1333 sp<EffectModule> getEffectIfEnabled(const effect_uuid_t *type); 1334 // true if the effect whose descriptor is passed can be suspended 1335 // OEMs can modify the rules implemented in this method to exclude specific effect 1336 // types or implementations from the suspend/restore mechanism. 1337 bool isEffectEligibleForSuspend(const effect_descriptor_t& desc); 1338 1339 wp<ThreadBase> mThread; // parent mixer thread 1340 Mutex mLock; // mutex protecting effect list 1341 Vector<sp<EffectModule> > mEffects; // list of effect modules 1342 int mSessionId; // audio session ID 1343 int16_t *mInBuffer; // chain input buffer 1344 int16_t *mOutBuffer; // chain output buffer 1345 volatile int32_t mActiveTrackCnt; // number of active tracks connected 1346 volatile int32_t mTrackCnt; // number of tracks connected 1347 int32_t mTailBufferCount; // current effect tail buffer count 1348 int32_t mMaxTailBuffers; // maximum effect tail buffers 1349 bool mOwnInBuffer; // true if the chain owns its input buffer 1350 int mVolumeCtrlIdx; // index of insert effect having control over volume 1351 uint32_t mLeftVolume; // previous volume on left channel 1352 uint32_t mRightVolume; // previous volume on right channel 1353 uint32_t mNewLeftVolume; // new volume on left channel 1354 uint32_t mNewRightVolume; // new volume on right channel 1355 uint32_t mStrategy; // strategy for this effect chain 1356 // mSuspendedEffects lists all effect currently suspended in the chain 1357 // use effect type UUID timelow field as key. There is no real risk of identical 1358 // timeLow fields among effect type UUIDs. 1359 KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects; 1360 }; 1361 1362 // AudioStreamOut and AudioStreamIn are immutable, so their fields are const. 1363 // For emphasis, we could also make all pointers to them be "const *", 1364 // but that would clutter the code unnecessarily. 1365 1366 struct AudioStreamOut { 1367 audio_hw_device_t* const hwDev; 1368 audio_stream_out_t* const stream; 1369 1370 AudioStreamOut(audio_hw_device_t *dev, audio_stream_out_t *out) : 1371 hwDev(dev), stream(out) {} 1372 }; 1373 1374 struct AudioStreamIn { 1375 audio_hw_device_t* const hwDev; 1376 audio_stream_in_t* const stream; 1377 1378 AudioStreamIn(audio_hw_device_t *dev, audio_stream_in_t *in) : 1379 hwDev(dev), stream(in) {} 1380 }; 1381 1382 struct AudioSessionRef { 1383 // FIXME rename parameter names when fields get "m" prefix 1384 AudioSessionRef(int sessionid_, pid_t pid_) : 1385 sessionid(sessionid_), pid(pid_), cnt(1) {} 1386 const int sessionid; 1387 const pid_t pid; 1388 int cnt; 1389 }; 1390 1391 friend class RecordThread; 1392 friend class PlaybackThread; 1393 1394 mutable Mutex mLock; 1395 1396 DefaultKeyedVector< pid_t, wp<Client> > mClients; 1397 1398 mutable Mutex mHardwareLock; 1399 audio_hw_device_t* mPrimaryHardwareDev; 1400 Vector<audio_hw_device_t*> mAudioHwDevs; 1401 mutable hardware_call_state mHardwareStatus; // for dump only 1402 1403 1404 DefaultKeyedVector< int, sp<PlaybackThread> > mPlaybackThreads; 1405 PlaybackThread::stream_type_t mStreamTypes[AUDIO_STREAM_CNT]; 1406 1407 // both are protected by mLock 1408 float mMasterVolume; 1409 bool mMasterMute; 1410 1411 DefaultKeyedVector< int, sp<RecordThread> > mRecordThreads; 1412 1413 DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients; 1414 volatile int32_t mNextUniqueId; 1415 audio_mode_t mMode; 1416 bool mBtNrecIsOff; 1417 1418 Vector<AudioSessionRef*> mAudioSessionRefs; 1419 1420 float masterVolume_l() const { return mMasterVolume; } 1421 bool masterMute_l() const { return mMasterMute; } 1422}; 1423 1424 1425// ---------------------------------------------------------------------------- 1426 1427}; // namespace android 1428 1429#endif // ANDROID_AUDIO_FLINGER_H 1430