AudioFlinger.h revision b279312a9038b9c5b9b05b31b1b1db86f748efd8
1/* 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 <common_time/cc_helper.h> 26 27#include <media/IAudioFlinger.h> 28#include <media/IAudioFlingerClient.h> 29#include <media/IAudioTrack.h> 30#include <media/IAudioRecord.h> 31#include <media/AudioSystem.h> 32#include <media/AudioTrack.h> 33 34#include <utils/Atomic.h> 35#include <utils/Errors.h> 36#include <utils/threads.h> 37#include <utils/SortedVector.h> 38#include <utils/TypeHelpers.h> 39#include <utils/Vector.h> 40 41#include <binder/BinderService.h> 42#include <binder/MemoryDealer.h> 43 44#include <system/audio.h> 45#include <hardware/audio.h> 46 47#include "AudioBufferProvider.h" 48 49#include <powermanager/IPowerManager.h> 50 51namespace android { 52 53class audio_track_cblk_t; 54class effect_param_cblk_t; 55class AudioMixer; 56class AudioBuffer; 57class AudioResampler; 58 59// ---------------------------------------------------------------------------- 60 61static const nsecs_t kDefaultStandbyTimeInNsecs = seconds(3); 62 63class AudioFlinger : 64 public BinderService<AudioFlinger>, 65 public BnAudioFlinger 66{ 67 friend class BinderService<AudioFlinger>; 68public: 69 static const char* getServiceName() { return "media.audio_flinger"; } 70 71 virtual status_t dump(int fd, const Vector<String16>& args); 72 73 // IAudioFlinger interface, in binder opcode order 74 virtual sp<IAudioTrack> createTrack( 75 pid_t pid, 76 audio_stream_type_t streamType, 77 uint32_t sampleRate, 78 audio_format_t format, 79 uint32_t channelMask, 80 int frameCount, 81 uint32_t flags, 82 const sp<IMemory>& sharedBuffer, 83 audio_io_handle_t output, 84 bool isTimed, 85 int *sessionId, 86 status_t *status); 87 88 virtual sp<IAudioRecord> openRecord( 89 pid_t pid, 90 audio_io_handle_t input, 91 uint32_t sampleRate, 92 audio_format_t format, 93 uint32_t channelMask, 94 int frameCount, 95 uint32_t flags, 96 int *sessionId, 97 status_t *status); 98 99 virtual uint32_t sampleRate(audio_io_handle_t output) const; 100 virtual int channelCount(audio_io_handle_t output) const; 101 virtual audio_format_t format(audio_io_handle_t output) const; 102 virtual size_t frameCount(audio_io_handle_t output) const; 103 virtual uint32_t latency(audio_io_handle_t output) const; 104 105 virtual status_t setMasterVolume(float value); 106 virtual status_t setMasterMute(bool muted); 107 108 virtual float masterVolume() const; 109 virtual float masterVolumeSW() const; 110 virtual bool masterMute() const; 111 112 virtual status_t setStreamVolume(audio_stream_type_t stream, float value, 113 audio_io_handle_t output); 114 virtual status_t setStreamMute(audio_stream_type_t stream, bool muted); 115 116 virtual float streamVolume(audio_stream_type_t stream, 117 audio_io_handle_t output) const; 118 virtual bool streamMute(audio_stream_type_t stream) const; 119 120 virtual status_t setMode(audio_mode_t mode); 121 122 virtual status_t setMicMute(bool state); 123 virtual bool getMicMute() const; 124 125 virtual status_t setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs); 126 virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys) const; 127 128 virtual void registerClient(const sp<IAudioFlingerClient>& client); 129 130 virtual size_t getInputBufferSize(uint32_t sampleRate, audio_format_t format, int channelCount) const; 131 132 virtual audio_io_handle_t openOutput(uint32_t *pDevices, 133 uint32_t *pSamplingRate, 134 audio_format_t *pFormat, 135 uint32_t *pChannels, 136 uint32_t *pLatencyMs, 137 uint32_t flags); 138 139 virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1, 140 audio_io_handle_t output2); 141 142 virtual status_t closeOutput(audio_io_handle_t output); 143 144 virtual status_t suspendOutput(audio_io_handle_t output); 145 146 virtual status_t restoreOutput(audio_io_handle_t output); 147 148 virtual audio_io_handle_t openInput(uint32_t *pDevices, 149 uint32_t *pSamplingRate, 150 audio_format_t *pFormat, 151 uint32_t *pChannels, 152 audio_in_acoustics_t acoustics); 153 154 virtual status_t closeInput(audio_io_handle_t input); 155 156 virtual status_t setStreamOutput(audio_stream_type_t stream, audio_io_handle_t output); 157 158 virtual status_t setVoiceVolume(float volume); 159 160 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, 161 audio_io_handle_t output) const; 162 163 virtual unsigned int getInputFramesLost(audio_io_handle_t ioHandle) const; 164 165 virtual int newAudioSessionId(); 166 167 virtual void acquireAudioSessionId(int audioSession); 168 169 virtual void releaseAudioSessionId(int audioSession); 170 171 virtual status_t queryNumberEffects(uint32_t *numEffects) const; 172 173 virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor) const; 174 175 virtual status_t getEffectDescriptor(const effect_uuid_t *pUuid, 176 effect_descriptor_t *descriptor) const; 177 178 virtual sp<IEffect> createEffect(pid_t pid, 179 effect_descriptor_t *pDesc, 180 const sp<IEffectClient>& effectClient, 181 int32_t priority, 182 audio_io_handle_t io, 183 int sessionId, 184 status_t *status, 185 int *id, 186 int *enabled); 187 188 virtual status_t moveEffects(int sessionId, audio_io_handle_t srcOutput, 189 audio_io_handle_t dstOutput); 190 191 virtual status_t onTransact( 192 uint32_t code, 193 const Parcel& data, 194 Parcel* reply, 195 uint32_t flags); 196 197 // end of IAudioFlinger interface 198 199private: 200 audio_mode_t getMode() const { return mMode; } 201 202 bool btNrecIsOff() const { return mBtNrecIsOff; } 203 204 AudioFlinger(); 205 virtual ~AudioFlinger(); 206 207 // call in any IAudioFlinger method that accesses mPrimaryHardwareDev 208 status_t initCheck() const { return mPrimaryHardwareDev == NULL ? NO_INIT : NO_ERROR; } 209 210 // RefBase 211 virtual void onFirstRef(); 212 213 audio_hw_device_t* findSuitableHwDev_l(uint32_t devices); 214 void purgeStaleEffects_l(); 215 216 static nsecs_t mStandbyTimeInNsecs; 217 218 // Internal dump utilites. 219 status_t dumpPermissionDenial(int fd, const Vector<String16>& args); 220 status_t dumpClients(int fd, const Vector<String16>& args); 221 status_t dumpInternals(int fd, const Vector<String16>& args); 222 223 // --- Client --- 224 class Client : public RefBase { 225 public: 226 Client(const sp<AudioFlinger>& audioFlinger, pid_t pid); 227 virtual ~Client(); 228 sp<MemoryDealer> heap() const; 229 pid_t pid() const { return mPid; } 230 sp<AudioFlinger> audioFlinger() const { return mAudioFlinger; } 231 232 bool reserveTimedTrack(); 233 void releaseTimedTrack(); 234 235 private: 236 Client(const Client&); 237 Client& operator = (const Client&); 238 const sp<AudioFlinger> mAudioFlinger; 239 const sp<MemoryDealer> mMemoryDealer; 240 const pid_t mPid; 241 242 Mutex mTimedTrackLock; 243 int mTimedTrackCount; 244 }; 245 246 // --- Notification Client --- 247 class NotificationClient : public IBinder::DeathRecipient { 248 public: 249 NotificationClient(const sp<AudioFlinger>& audioFlinger, 250 const sp<IAudioFlingerClient>& client, 251 pid_t pid); 252 virtual ~NotificationClient(); 253 254 sp<IAudioFlingerClient> audioFlingerClient() const { return mAudioFlingerClient; } 255 256 // IBinder::DeathRecipient 257 virtual void binderDied(const wp<IBinder>& who); 258 259 private: 260 NotificationClient(const NotificationClient&); 261 NotificationClient& operator = (const NotificationClient&); 262 263 const sp<AudioFlinger> mAudioFlinger; 264 const pid_t mPid; 265 const sp<IAudioFlingerClient> mAudioFlingerClient; 266 }; 267 268 class TrackHandle; 269 class RecordHandle; 270 class RecordThread; 271 class PlaybackThread; 272 class MixerThread; 273 class DirectOutputThread; 274 class DuplicatingThread; 275 class Track; 276 class RecordTrack; 277 class EffectModule; 278 class EffectHandle; 279 class EffectChain; 280 struct AudioStreamOut; 281 struct AudioStreamIn; 282 283 class ThreadBase : public Thread { 284 public: 285 286 enum type_t { 287 MIXER, // Thread class is MixerThread 288 DIRECT, // Thread class is DirectOutputThread 289 DUPLICATING, // Thread class is DuplicatingThread 290 RECORD // Thread class is RecordThread 291 }; 292 293 ThreadBase (const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id, uint32_t device, type_t type); 294 virtual ~ThreadBase(); 295 296 status_t dumpBase(int fd, const Vector<String16>& args); 297 status_t dumpEffectChains(int fd, const Vector<String16>& args); 298 299 void clearPowerManager(); 300 301 // base for record and playback 302 class TrackBase : public AudioBufferProvider, public RefBase { 303 304 public: 305 enum track_state { 306 IDLE, 307 TERMINATED, 308 // These are order-sensitive; do not change order without reviewing the impact. 309 // In particular there are assumptions about > STOPPED. 310 STOPPED, 311 RESUMING, 312 ACTIVE, 313 PAUSING, 314 PAUSED 315 }; 316 317 TrackBase(ThreadBase *thread, 318 const sp<Client>& client, 319 uint32_t sampleRate, 320 audio_format_t format, 321 uint32_t channelMask, 322 int frameCount, 323 const sp<IMemory>& sharedBuffer, 324 int sessionId); 325 virtual ~TrackBase(); 326 327 virtual status_t start(pid_t tid) = 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 // AudioBufferProvider interface 345 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts) = 0; 346 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 347 348 audio_format_t format() const { 349 return mFormat; 350 } 351 352 int channelCount() const { return mChannelCount; } 353 354 uint32_t channelMask() const { return mChannelMask; } 355 356 int sampleRate() const; // FIXME inline after cblk sr moved 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 const audio_format_t mFormat; 381 bool mStepServerFailed; 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 // Should be "virtual status_t requestExitAndWait()" and override same 418 // method in Thread, but Thread::requestExitAndWait() is not yet virtual. 419 void exit(); 420 virtual bool checkForNewParameters_l() = 0; 421 virtual status_t setParameters(const String8& keyValuePairs); 422 virtual String8 getParameters(const String8& keys) = 0; 423 virtual void audioConfigChanged_l(int event, int param = 0) = 0; 424 void sendConfigEvent(int event, int param = 0); 425 void sendConfigEvent_l(int event, int param = 0); 426 void processConfigEvents(); 427 audio_io_handle_t id() const { return mId;} 428 bool standby() const { return mStandby; } 429 uint32_t device() const { return mDevice; } 430 virtual audio_stream_t* stream() = 0; 431 432 sp<EffectHandle> createEffect_l( 433 const sp<AudioFlinger::Client>& client, 434 const sp<IEffectClient>& effectClient, 435 int32_t priority, 436 int sessionId, 437 effect_descriptor_t *desc, 438 int *enabled, 439 status_t *status); 440 void disconnectEffect(const sp< EffectModule>& effect, 441 const wp<EffectHandle>& handle, 442 bool unpinIfLast); 443 444 // return values for hasAudioSession (bit field) 445 enum effect_state { 446 EFFECT_SESSION = 0x1, // the audio session corresponds to at least one 447 // effect 448 TRACK_SESSION = 0x2 // the audio session corresponds to at least one 449 // track 450 }; 451 452 // get effect chain corresponding to session Id. 453 sp<EffectChain> getEffectChain(int sessionId); 454 // same as getEffectChain() but must be called with ThreadBase mutex locked 455 sp<EffectChain> getEffectChain_l(int sessionId); 456 // add an effect chain to the chain list (mEffectChains) 457 virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0; 458 // remove an effect chain from the chain list (mEffectChains) 459 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain) = 0; 460 // lock all effect chains Mutexes. Must be called before releasing the 461 // ThreadBase mutex before processing the mixer and effects. This guarantees the 462 // integrity of the chains during the process. 463 // Also sets the parameter 'effectChains' to current value of mEffectChains. 464 void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains); 465 // unlock effect chains after process 466 void unlockEffectChains(const Vector<sp<EffectChain> >& effectChains); 467 // set audio mode to all effect chains 468 void setMode(audio_mode_t mode); 469 // get effect module with corresponding ID on specified audio session 470 sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId); 471 // add and effect module. Also creates the effect chain is none exists for 472 // the effects audio session 473 status_t addEffect_l(const sp< EffectModule>& effect); 474 // remove and effect module. Also removes the effect chain is this was the last 475 // effect 476 void removeEffect_l(const sp< EffectModule>& effect); 477 // detach all tracks connected to an auxiliary effect 478 virtual void detachAuxEffect_l(int effectId) {} 479 // returns either EFFECT_SESSION if effects on this audio session exist in one 480 // chain, or TRACK_SESSION if tracks on this audio session exist, or both 481 virtual uint32_t hasAudioSession(int sessionId) = 0; 482 // the value returned by default implementation is not important as the 483 // strategy is only meaningful for PlaybackThread which implements this method 484 virtual uint32_t getStrategyForSession_l(int sessionId) { return 0; } 485 486 // suspend or restore effect according to the type of effect passed. a NULL 487 // type pointer means suspend all effects in the session 488 void setEffectSuspended(const effect_uuid_t *type, 489 bool suspend, 490 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 491 // check if some effects must be suspended/restored when an effect is enabled 492 // or disabled 493 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 494 bool enabled, 495 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 496 void checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect, 497 bool enabled, 498 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 499 mutable Mutex mLock; 500 501 protected: 502 503 // entry describing an effect being suspended in mSuspendedSessions keyed vector 504 class SuspendedSessionDesc : public RefBase { 505 public: 506 SuspendedSessionDesc() : mRefCount(0) {} 507 508 int mRefCount; // number of active suspend requests 509 effect_uuid_t mType; // effect type UUID 510 }; 511 512 void acquireWakeLock(); 513 void acquireWakeLock_l(); 514 void releaseWakeLock(); 515 void releaseWakeLock_l(); 516 void setEffectSuspended_l(const effect_uuid_t *type, 517 bool suspend, 518 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 519 // updated mSuspendedSessions when an effect suspended or restored 520 void updateSuspendedSessions_l(const effect_uuid_t *type, 521 bool suspend, 522 int sessionId); 523 // check if some effects must be suspended when an effect chain is added 524 void checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain); 525 526 friend class AudioFlinger; 527 friend class Track; 528 friend class TrackBase; 529 friend class PlaybackThread; 530 friend class MixerThread; 531 friend class DirectOutputThread; 532 friend class DuplicatingThread; 533 friend class RecordThread; 534 friend class RecordTrack; 535 536 const type_t mType; 537 538 // Used by parameters, config events, addTrack_l, exit 539 Condition mWaitWorkCV; 540 541 const sp<AudioFlinger> mAudioFlinger; 542 uint32_t mSampleRate; 543 size_t mFrameCount; 544 uint32_t mChannelMask; 545 uint16_t mChannelCount; 546 size_t mFrameSize; 547 audio_format_t mFormat; 548 549 // Parameter sequence by client: binder thread calling setParameters(): 550 // 1. Lock mLock 551 // 2. Append to mNewParameters 552 // 3. mWaitWorkCV.signal 553 // 4. mParamCond.waitRelative with timeout 554 // 5. read mParamStatus 555 // 6. mWaitWorkCV.signal 556 // 7. Unlock 557 // 558 // Parameter sequence by server: threadLoop calling checkForNewParameters_l(): 559 // 1. Lock mLock 560 // 2. If there is an entry in mNewParameters proceed ... 561 // 2. Read first entry in mNewParameters 562 // 3. Process 563 // 4. Remove first entry from mNewParameters 564 // 5. Set mParamStatus 565 // 6. mParamCond.signal 566 // 7. mWaitWorkCV.wait with timeout (this is to avoid overwriting mParamStatus) 567 // 8. Unlock 568 Condition mParamCond; 569 Vector<String8> mNewParameters; 570 status_t mParamStatus; 571 572 Vector<ConfigEvent> mConfigEvents; 573 bool mStandby; 574 const audio_io_handle_t mId; 575 Vector< sp<EffectChain> > mEffectChains; 576 uint32_t mDevice; // output device for PlaybackThread 577 // input + output devices for RecordThread 578 static const int kNameLength = 16; // prctl(PR_SET_NAME) limit 579 char mName[kNameLength]; 580 sp<IPowerManager> mPowerManager; 581 sp<IBinder> mWakeLockToken; 582 const sp<PMDeathRecipient> mDeathRecipient; 583 // list of suspended effects per session and per type. The first vector is 584 // keyed by session ID, the second by type UUID timeLow field 585 KeyedVector< int, KeyedVector< int, sp<SuspendedSessionDesc> > > mSuspendedSessions; 586 }; 587 588 struct stream_type_t { 589 stream_type_t() 590 : volume(1.0f), 591 mute(false), 592 valid(true) 593 { 594 } 595 float volume; 596 bool mute; 597 bool valid; 598 }; 599 600 // --- PlaybackThread --- 601 class PlaybackThread : public ThreadBase { 602 public: 603 604 enum mixer_state { 605 MIXER_IDLE, // no active tracks 606 MIXER_TRACKS_ENABLED, // at least one active track, but no track has any data ready 607 MIXER_TRACKS_READY // at least one active track, and at least one track has data 608 // standby mode does not have an enum value 609 // suspend by audio policy manager is orthogonal to mixer state 610#if 1 611 // FIXME remove this hack for prepareTracks_l() 612 , MIXER_CONTINUE // "continue;" 613#endif 614 }; 615 616 // playback track 617 class Track : public TrackBase { 618 public: 619 Track( PlaybackThread *thread, 620 const sp<Client>& client, 621 audio_stream_type_t streamType, 622 uint32_t sampleRate, 623 audio_format_t format, 624 uint32_t channelMask, 625 int frameCount, 626 const sp<IMemory>& sharedBuffer, 627 int sessionId); 628 virtual ~Track(); 629 630 void dump(char* buffer, size_t size); 631 virtual status_t start(pid_t tid); 632 virtual void stop(); 633 void pause(); 634 635 void flush(); 636 void destroy(); 637 void mute(bool); 638 int name() const { 639 return mName; 640 } 641 642 audio_stream_type_t streamType() const { 643 return mStreamType; 644 } 645 status_t attachAuxEffect(int EffectId); 646 void setAuxBuffer(int EffectId, int32_t *buffer); 647 int32_t *auxBuffer() const { return mAuxBuffer; } 648 void setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; } 649 int16_t *mainBuffer() const { return mMainBuffer; } 650 int auxEffectId() const { return mAuxEffectId; } 651 652 protected: 653 friend class ThreadBase; 654 friend class TrackHandle; 655 friend class PlaybackThread; 656 friend class MixerThread; 657 friend class DirectOutputThread; 658 659 Track(const Track&); 660 Track& operator = (const Track&); 661 662 // AudioBufferProvider interface 663 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts = kInvalidPTS); 664 // releaseBuffer() not overridden 665 666 virtual uint32_t framesReady() const; 667 668 bool isMuted() const { return mMute; } 669 bool isPausing() const { 670 return mState == PAUSING; 671 } 672 bool isPaused() const { 673 return mState == PAUSED; 674 } 675 bool isReady() const; 676 void setPaused() { mState = PAUSED; } 677 void reset(); 678 679 bool isOutputTrack() const { 680 return (mStreamType == AUDIO_STREAM_CNT); 681 } 682 683 virtual bool isTimedTrack() const { return false; } 684 685 // we don't really need a lock for these 686 volatile bool mMute; 687 // FILLED state is used for suppressing volume ramp at begin of playing 688 enum {FS_FILLING, FS_FILLED, FS_ACTIVE}; 689 mutable uint8_t mFillingUpStatus; 690 int8_t mRetryCount; 691 sp<IMemory> mSharedBuffer; 692 bool mResetDone; 693 audio_stream_type_t mStreamType; 694 int mName; 695 int16_t *mMainBuffer; 696 int32_t *mAuxBuffer; 697 int mAuxEffectId; 698 bool mHasVolumeController; 699 }; // end of Track 700 701 class TimedTrack : public Track { 702 public: 703 static sp<TimedTrack> create(PlaybackThread *thread, 704 const sp<Client>& client, 705 audio_stream_type_t streamType, 706 uint32_t sampleRate, 707 audio_format_t format, 708 uint32_t channelMask, 709 int frameCount, 710 const sp<IMemory>& sharedBuffer, 711 int sessionId); 712 ~TimedTrack(); 713 714 class TimedBuffer { 715 public: 716 TimedBuffer(); 717 TimedBuffer(const sp<IMemory>& buffer, int64_t pts); 718 const sp<IMemory>& buffer() const { return mBuffer; } 719 int64_t pts() const { return mPTS; } 720 int position() const { return mPosition; } 721 void setPosition(int pos) { mPosition = pos; } 722 private: 723 sp<IMemory> mBuffer; 724 int64_t mPTS; 725 int mPosition; 726 }; 727 728 virtual bool isTimedTrack() const { return true; } 729 730 virtual uint32_t framesReady() const; 731 732 // AudioBufferProvider interface 733 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts); 734 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 735 736 void timedYieldSamples(AudioBufferProvider::Buffer* buffer); 737 void timedYieldSilence(uint32_t numFrames, 738 AudioBufferProvider::Buffer* buffer); 739 740 status_t allocateTimedBuffer(size_t size, 741 sp<IMemory>* buffer); 742 status_t queueTimedBuffer(const sp<IMemory>& buffer, 743 int64_t pts); 744 status_t setMediaTimeTransform(const LinearTransform& xform, 745 TimedAudioTrack::TargetTimeline target); 746 void trimTimedBufferQueue_l(); 747 748 private: 749 TimedTrack(PlaybackThread *thread, 750 const sp<Client>& client, 751 audio_stream_type_t streamType, 752 uint32_t sampleRate, 753 audio_format_t format, 754 uint32_t channelMask, 755 int frameCount, 756 const sp<IMemory>& sharedBuffer, 757 int sessionId); 758 759 uint64_t mLocalTimeFreq; 760 LinearTransform mLocalTimeToSampleTransform; 761 sp<MemoryDealer> mTimedMemoryDealer; 762 Vector<TimedBuffer> mTimedBufferQueue; 763 uint8_t* mTimedSilenceBuffer; 764 uint32_t mTimedSilenceBufferSize; 765 mutable Mutex mTimedBufferQueueLock; 766 bool mTimedAudioOutputOnTime; 767 CCHelper mCCHelper; 768 769 Mutex mMediaTimeTransformLock; 770 LinearTransform mMediaTimeTransform; 771 bool mMediaTimeTransformValid; 772 TimedAudioTrack::TargetTimeline mMediaTimeTransformTarget; 773 }; 774 775 776 // playback track 777 class OutputTrack : public Track { 778 public: 779 780 class Buffer: public AudioBufferProvider::Buffer { 781 public: 782 int16_t *mBuffer; 783 }; 784 785 OutputTrack(PlaybackThread *thread, 786 DuplicatingThread *sourceThread, 787 uint32_t sampleRate, 788 audio_format_t format, 789 uint32_t channelMask, 790 int frameCount); 791 virtual ~OutputTrack(); 792 793 virtual status_t start(pid_t tid); 794 virtual void stop(); 795 bool write(int16_t* data, uint32_t frames); 796 bool bufferQueueEmpty() const { return mBufferQueue.size() == 0; } 797 bool isActive() const { return mActive; } 798 const wp<ThreadBase>& thread() const { return mThread; } 799 800 private: 801 802 enum { 803 NO_MORE_BUFFERS = 0x80000001, // same in AudioTrack.h, ok to be different value 804 }; 805 806 status_t obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs); 807 void clearBufferQueue(); 808 809 // Maximum number of pending buffers allocated by OutputTrack::write() 810 static const uint8_t kMaxOverFlowBuffers = 10; 811 812 Vector < Buffer* > mBufferQueue; 813 AudioBufferProvider::Buffer mOutBuffer; 814 bool mActive; 815 DuplicatingThread* const mSourceThread; // for waitTimeMs() in write() 816 }; // end of OutputTrack 817 818 PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, 819 audio_io_handle_t id, uint32_t device, type_t type); 820 virtual ~PlaybackThread(); 821 822 virtual status_t dump(int fd, const Vector<String16>& args); 823 824 // Thread virtuals 825 virtual status_t readyToRun(); 826 virtual bool threadLoop(); 827 828 // RefBase 829 virtual void onFirstRef(); 830 831protected: 832 // Code snippets that were lifted up out of threadLoop() 833 virtual void threadLoop_mix() = 0; 834 virtual void threadLoop_sleepTime() = 0; 835 virtual void threadLoop_write(); 836 virtual void threadLoop_standby(); 837 838 // Non-trivial for DUPLICATING only 839 virtual void updateWaitTime_l() { } 840 841 // Non-trivial for DIRECT only 842 virtual void applyVolume() { } 843 844 // prepareTracks_l reads and writes mActiveTracks, and also returns the 845 // pending set of tracks to remove via Vector 'tracksToRemove'. The caller is 846 // responsible for clearing or destroying this Vector later on, when it 847 // is safe to do so. That will drop the final ref count and destroy the tracks. 848 virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove) = 0; 849 850public: 851 852 virtual status_t initCheck() const { return (mOutput == NULL) ? NO_INIT : NO_ERROR; } 853 854 virtual uint32_t latency() const; 855 856 void setMasterVolume(float value); 857 void setMasterMute(bool muted); 858 859 void setStreamVolume(audio_stream_type_t stream, float value); 860 void setStreamMute(audio_stream_type_t stream, bool muted); 861 862 float streamVolume(audio_stream_type_t stream) const; 863 864 sp<Track> createTrack_l( 865 const sp<AudioFlinger::Client>& client, 866 audio_stream_type_t streamType, 867 uint32_t sampleRate, 868 audio_format_t format, 869 uint32_t channelMask, 870 int frameCount, 871 const sp<IMemory>& sharedBuffer, 872 int sessionId, 873 bool isTimed, 874 status_t *status); 875 876 AudioStreamOut* getOutput() const; 877 AudioStreamOut* clearOutput(); 878 virtual audio_stream_t* stream(); 879 880 void suspend() { mSuspended++; } 881 void restore() { if (mSuspended > 0) mSuspended--; } 882 bool isSuspended() const { return (mSuspended > 0); } 883 virtual String8 getParameters(const String8& keys); 884 virtual void audioConfigChanged_l(int event, int param = 0); 885 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames); 886 int16_t *mixBuffer() const { return mMixBuffer; }; 887 888 virtual void detachAuxEffect_l(int effectId); 889 status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track, 890 int EffectId); 891 status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track, 892 int EffectId); 893 894 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 895 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 896 virtual uint32_t hasAudioSession(int sessionId); 897 virtual uint32_t getStrategyForSession_l(int sessionId); 898 899 void setStreamValid(audio_stream_type_t streamType, bool valid); 900 901 protected: 902 int16_t* mMixBuffer; 903 uint32_t mSuspended; // suspend count, > 0 means suspended 904 int mBytesWritten; 905 private: 906 // mMasterMute is in both PlaybackThread and in AudioFlinger. When a 907 // PlaybackThread needs to find out if master-muted, it checks it's local 908 // copy rather than the one in AudioFlinger. This optimization saves a lock. 909 bool mMasterMute; 910 void setMasterMute_l(bool muted) { mMasterMute = muted; } 911 protected: 912 SortedVector< wp<Track> > mActiveTracks; 913 914 virtual int getTrackName_l() = 0; 915 virtual void deleteTrackName_l(int name) = 0; 916 virtual uint32_t activeSleepTimeUs(); 917 virtual uint32_t idleSleepTimeUs() = 0; 918 virtual uint32_t suspendSleepTimeUs() = 0; 919 920 // Code snippets that are temporarily lifted up out of threadLoop() until the merge 921 void checkSilentMode_l(); 922 923 // Non-trivial for DUPLICATING only 924 virtual void saveOutputTracks() { } 925 virtual void clearOutputTracks() { } 926 927 private: 928 929 friend class AudioFlinger; 930 friend class OutputTrack; 931 friend class Track; 932 friend class TrackBase; 933 friend class MixerThread; 934 friend class DirectOutputThread; 935 friend class DuplicatingThread; 936 937 PlaybackThread(const Client&); 938 PlaybackThread& operator = (const PlaybackThread&); 939 940 status_t addTrack_l(const sp<Track>& track); 941 void destroyTrack_l(const sp<Track>& track); 942 void removeTrack_l(const sp<Track>& track); 943 944 void readOutputParameters(); 945 946 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 947 status_t dumpTracks(int fd, const Vector<String16>& args); 948 949 SortedVector< sp<Track> > mTracks; 950 // mStreamTypes[] uses 1 additional stream type internally for the OutputTrack used by DuplicatingThread 951 stream_type_t mStreamTypes[AUDIO_STREAM_CNT + 1]; 952 AudioStreamOut *mOutput; 953 float mMasterVolume; 954 nsecs_t mLastWriteTime; 955 int mNumWrites; 956 int mNumDelayedWrites; 957 bool mInWrite; 958 959 // FIXME rename these former local variables of threadLoop to standard "m" names 960 nsecs_t standbyTime; 961 size_t mixBufferSize; 962 uint32_t activeSleepTime; 963 uint32_t idleSleepTime; 964 uint32_t sleepTime; 965 // mixerStatus was local to the while !exitingPending loop 966 mixer_state mixerStatus; 967 968 // FIXME move these declarations into the specific sub-class that needs them 969 // MIXER only 970 bool longStandbyExit; 971 uint32_t sleepTimeShift; 972 // MIXER and DUPLICATING only 973 mixer_state mPrevMixerStatus; // previous status returned by prepareTracks_l() 974 // DIRECT only 975 nsecs_t standbyDelay; 976 // activeTrack was local to the while !exitingPending loop 977 sp<Track> activeTrack; 978 // DUPLICATING only 979 uint32_t writeFrames; 980 }; 981 982 class MixerThread : public PlaybackThread { 983 public: 984 MixerThread (const sp<AudioFlinger>& audioFlinger, 985 AudioStreamOut* output, 986 audio_io_handle_t id, 987 uint32_t device, 988 type_t type = MIXER); 989 virtual ~MixerThread(); 990 991 // Thread virtuals 992 993 void invalidateTracks(audio_stream_type_t streamType); 994 virtual bool checkForNewParameters_l(); 995 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 996 997 protected: 998 virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove); 999 virtual int getTrackName_l(); 1000 virtual void deleteTrackName_l(int name); 1001 virtual uint32_t idleSleepTimeUs(); 1002 virtual uint32_t suspendSleepTimeUs(); 1003 1004 // threadLoop snippets 1005 virtual void threadLoop_mix(); 1006 virtual void threadLoop_sleepTime(); 1007 1008 AudioMixer* mAudioMixer; 1009 }; 1010 1011 class DirectOutputThread : public PlaybackThread { 1012 public: 1013 1014 DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, 1015 audio_io_handle_t id, uint32_t device); 1016 virtual ~DirectOutputThread(); 1017 1018 // Thread virtuals 1019 1020 virtual bool checkForNewParameters_l(); 1021 1022 protected: 1023 virtual int getTrackName_l(); 1024 virtual void deleteTrackName_l(int name); 1025 virtual uint32_t activeSleepTimeUs(); 1026 virtual uint32_t idleSleepTimeUs(); 1027 virtual uint32_t suspendSleepTimeUs(); 1028 1029 // threadLoop snippets 1030 virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove); 1031 virtual void threadLoop_mix(); 1032 virtual void threadLoop_sleepTime(); 1033 1034 // volumes last sent to audio HAL with stream->set_volume() 1035 // FIXME use standard representation and names 1036 float mLeftVolFloat; 1037 float mRightVolFloat; 1038 uint16_t mLeftVolShort; 1039 uint16_t mRightVolShort; 1040 1041 // FIXME rename these former local variables of threadLoop to standard names 1042 // next 3 were local to the while !exitingPending loop 1043 bool rampVolume; 1044 uint16_t leftVol; 1045 uint16_t rightVol; 1046 1047private: 1048 void applyVolume(); // FIXME inline into threadLoop_mix() 1049 }; 1050 1051 class DuplicatingThread : public MixerThread { 1052 public: 1053 DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, 1054 audio_io_handle_t id); 1055 virtual ~DuplicatingThread(); 1056 1057 // Thread virtuals 1058 void addOutputTrack(MixerThread* thread); 1059 void removeOutputTrack(MixerThread* thread); 1060 uint32_t waitTimeMs() { return mWaitTimeMs; } 1061 protected: 1062 virtual uint32_t activeSleepTimeUs(); 1063 1064 private: 1065 bool outputsReady(const SortedVector<sp<OutputTrack> > &outputTracks); 1066 protected: 1067 // threadLoop snippets 1068 virtual void threadLoop_mix(); 1069 virtual void threadLoop_sleepTime(); 1070 virtual void threadLoop_write(); 1071 virtual void threadLoop_standby(); 1072 1073 // called from threadLoop, addOutputTrack, removeOutputTrack 1074 virtual void updateWaitTime_l(); 1075 virtual void saveOutputTracks(); 1076 virtual void clearOutputTracks(); 1077 private: 1078 1079 uint32_t mWaitTimeMs; 1080 SortedVector < sp<OutputTrack> > outputTracks; 1081 SortedVector < sp<OutputTrack> > mOutputTracks; 1082 }; 1083 1084 PlaybackThread *checkPlaybackThread_l(audio_io_handle_t output) const; 1085 MixerThread *checkMixerThread_l(audio_io_handle_t output) const; 1086 RecordThread *checkRecordThread_l(audio_io_handle_t input) const; 1087 // no range check, AudioFlinger::mLock held 1088 bool streamMute_l(audio_stream_type_t stream) const 1089 { return mStreamTypes[stream].mute; } 1090 // no range check, doesn't check per-thread stream volume, AudioFlinger::mLock held 1091 float streamVolume_l(audio_stream_type_t stream) const 1092 { return mStreamTypes[stream].volume; } 1093 void audioConfigChanged_l(int event, audio_io_handle_t ioHandle, const void *param2); 1094 1095 // allocate an audio_io_handle_t, session ID, or effect ID 1096 uint32_t nextUniqueId(); 1097 1098 status_t moveEffectChain_l(int sessionId, 1099 PlaybackThread *srcThread, 1100 PlaybackThread *dstThread, 1101 bool reRegister); 1102 // return thread associated with primary hardware device, or NULL 1103 PlaybackThread *primaryPlaybackThread_l() const; 1104 uint32_t primaryOutputDevice_l() const; 1105 1106 friend class AudioBuffer; 1107 1108 // server side of the client's IAudioTrack 1109 class TrackHandle : public android::BnAudioTrack { 1110 public: 1111 TrackHandle(const sp<PlaybackThread::Track>& track); 1112 virtual ~TrackHandle(); 1113 virtual sp<IMemory> getCblk() const; 1114 virtual status_t start(pid_t tid); 1115 virtual void stop(); 1116 virtual void flush(); 1117 virtual void mute(bool); 1118 virtual void pause(); 1119 virtual status_t attachAuxEffect(int effectId); 1120 virtual status_t allocateTimedBuffer(size_t size, 1121 sp<IMemory>* buffer); 1122 virtual status_t queueTimedBuffer(const sp<IMemory>& buffer, 1123 int64_t pts); 1124 virtual status_t setMediaTimeTransform(const LinearTransform& xform, 1125 int target); 1126 virtual status_t onTransact( 1127 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 1128 private: 1129 const sp<PlaybackThread::Track> mTrack; 1130 }; 1131 1132 friend class Client; 1133 friend class PlaybackThread::Track; 1134 1135 1136 void removeClient_l(pid_t pid); 1137 void removeNotificationClient(pid_t pid); 1138 1139 1140 // record thread 1141 class RecordThread : public ThreadBase, public AudioBufferProvider 1142 { 1143 public: 1144 1145 // record track 1146 class RecordTrack : public TrackBase { 1147 public: 1148 RecordTrack(RecordThread *thread, 1149 const sp<Client>& client, 1150 uint32_t sampleRate, 1151 audio_format_t format, 1152 uint32_t channelMask, 1153 int frameCount, 1154 int sessionId); 1155 virtual ~RecordTrack(); 1156 1157 virtual status_t start(pid_t tid); 1158 virtual void stop(); 1159 1160 bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; } 1161 bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; } 1162 1163 void dump(char* buffer, size_t size); 1164 1165 private: 1166 friend class AudioFlinger; 1167 friend class RecordThread; 1168 1169 RecordTrack(const RecordTrack&); 1170 RecordTrack& operator = (const RecordTrack&); 1171 1172 // AudioBufferProvider interface 1173 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts = kInvalidPTS); 1174 // releaseBuffer() not overridden 1175 1176 bool mOverflow; 1177 }; 1178 1179 1180 RecordThread(const sp<AudioFlinger>& audioFlinger, 1181 AudioStreamIn *input, 1182 uint32_t sampleRate, 1183 uint32_t channels, 1184 audio_io_handle_t id, 1185 uint32_t device); 1186 virtual ~RecordThread(); 1187 1188 // Thread 1189 virtual bool threadLoop(); 1190 virtual status_t readyToRun(); 1191 1192 // RefBase 1193 virtual void onFirstRef(); 1194 1195 virtual status_t initCheck() const { return (mInput == NULL) ? NO_INIT : NO_ERROR; } 1196 sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l( 1197 const sp<AudioFlinger::Client>& client, 1198 uint32_t sampleRate, 1199 audio_format_t format, 1200 int channelMask, 1201 int frameCount, 1202 int sessionId, 1203 status_t *status); 1204 1205 status_t start(RecordTrack* recordTrack); 1206 status_t start(RecordTrack* recordTrack, pid_t tid); 1207 void stop(RecordTrack* recordTrack); 1208 status_t dump(int fd, const Vector<String16>& args); 1209 AudioStreamIn* getInput() const; 1210 AudioStreamIn* clearInput(); 1211 virtual audio_stream_t* stream(); 1212 1213 // AudioBufferProvider interface 1214 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts); 1215 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 1216 1217 virtual bool checkForNewParameters_l(); 1218 virtual String8 getParameters(const String8& keys); 1219 virtual void audioConfigChanged_l(int event, int param = 0); 1220 void readInputParameters(); 1221 virtual unsigned int getInputFramesLost(); 1222 1223 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 1224 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 1225 virtual uint32_t hasAudioSession(int sessionId); 1226 RecordTrack* track(); 1227 1228 private: 1229 RecordThread(); 1230 AudioStreamIn *mInput; 1231 RecordTrack* mTrack; 1232 sp<RecordTrack> mActiveTrack; 1233 Condition mStartStopCond; 1234 AudioResampler *mResampler; 1235 int32_t *mRsmpOutBuffer; 1236 int16_t *mRsmpInBuffer; 1237 size_t mRsmpInIndex; 1238 size_t mInputBytes; 1239 const int mReqChannelCount; 1240 const uint32_t mReqSampleRate; 1241 ssize_t mBytesRead; 1242 }; 1243 1244 // server side of the client's IAudioRecord 1245 class RecordHandle : public android::BnAudioRecord { 1246 public: 1247 RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack); 1248 virtual ~RecordHandle(); 1249 virtual sp<IMemory> getCblk() const; 1250 virtual status_t start(pid_t tid); 1251 virtual void stop(); 1252 virtual status_t onTransact( 1253 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 1254 private: 1255 const sp<RecordThread::RecordTrack> mRecordTrack; 1256 }; 1257 1258 //--- Audio Effect Management 1259 1260 // EffectModule and EffectChain classes both have their own mutex to protect 1261 // state changes or resource modifications. Always respect the following order 1262 // if multiple mutexes must be acquired to avoid cross deadlock: 1263 // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule 1264 1265 // The EffectModule class is a wrapper object controlling the effect engine implementation 1266 // in the effect library. It prevents concurrent calls to process() and command() functions 1267 // from different client threads. It keeps a list of EffectHandle objects corresponding 1268 // to all client applications using this effect and notifies applications of effect state, 1269 // control or parameter changes. It manages the activation state machine to send appropriate 1270 // reset, enable, disable commands to effect engine and provide volume 1271 // ramping when effects are activated/deactivated. 1272 // When controlling an auxiliary effect, the EffectModule also provides an input buffer used by 1273 // the attached track(s) to accumulate their auxiliary channel. 1274 class EffectModule: public RefBase { 1275 public: 1276 EffectModule(ThreadBase *thread, 1277 const wp<AudioFlinger::EffectChain>& chain, 1278 effect_descriptor_t *desc, 1279 int id, 1280 int sessionId); 1281 virtual ~EffectModule(); 1282 1283 enum effect_state { 1284 IDLE, 1285 RESTART, 1286 STARTING, 1287 ACTIVE, 1288 STOPPING, 1289 STOPPED, 1290 DESTROYED 1291 }; 1292 1293 int id() const { return mId; } 1294 void process(); 1295 void updateState(); 1296 status_t command(uint32_t cmdCode, 1297 uint32_t cmdSize, 1298 void *pCmdData, 1299 uint32_t *replySize, 1300 void *pReplyData); 1301 1302 void reset_l(); 1303 status_t configure(); 1304 status_t init(); 1305 effect_state state() const { 1306 return mState; 1307 } 1308 uint32_t status() { 1309 return mStatus; 1310 } 1311 int sessionId() const { 1312 return mSessionId; 1313 } 1314 status_t setEnabled(bool enabled); 1315 bool isEnabled() const; 1316 bool isProcessEnabled() const; 1317 1318 void setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; } 1319 int16_t *inBuffer() { return mConfig.inputCfg.buffer.s16; } 1320 void setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; } 1321 int16_t *outBuffer() { return mConfig.outputCfg.buffer.s16; } 1322 void setChain(const wp<EffectChain>& chain) { mChain = chain; } 1323 void setThread(const wp<ThreadBase>& thread) { mThread = thread; } 1324 const wp<ThreadBase>& thread() { return mThread; } 1325 1326 status_t addHandle(const sp<EffectHandle>& handle); 1327 void disconnect(const wp<EffectHandle>& handle, bool unpinIfLast); 1328 size_t removeHandle (const wp<EffectHandle>& handle); 1329 1330 effect_descriptor_t& desc() { return mDescriptor; } 1331 wp<EffectChain>& chain() { return mChain; } 1332 1333 status_t setDevice(uint32_t device); 1334 status_t setVolume(uint32_t *left, uint32_t *right, bool controller); 1335 status_t setMode(audio_mode_t mode); 1336 status_t start(); 1337 status_t stop(); 1338 void setSuspended(bool suspended); 1339 bool suspended() const; 1340 1341 sp<EffectHandle> controlHandle(); 1342 1343 bool isPinned() const { return mPinned; } 1344 void unPin() { mPinned = false; } 1345 1346 status_t dump(int fd, const Vector<String16>& args); 1347 1348 protected: 1349 friend class EffectHandle; 1350 friend class AudioFlinger; 1351 bool mPinned; 1352 1353 // Maximum time allocated to effect engines to complete the turn off sequence 1354 static const uint32_t MAX_DISABLE_TIME_MS = 10000; 1355 1356 EffectModule(const EffectModule&); 1357 EffectModule& operator = (const EffectModule&); 1358 1359 status_t start_l(); 1360 status_t stop_l(); 1361 1362mutable Mutex mLock; // mutex for process, commands and handles list protection 1363 wp<ThreadBase> mThread; // parent thread 1364 wp<EffectChain> mChain; // parent effect chain 1365 int mId; // this instance unique ID 1366 int mSessionId; // audio session ID 1367 effect_descriptor_t mDescriptor;// effect descriptor received from effect engine 1368 effect_config_t mConfig; // input and output audio configuration 1369 effect_handle_t mEffectInterface; // Effect module C API 1370 status_t mStatus; // initialization status 1371 effect_state mState; // current activation state 1372 Vector< wp<EffectHandle> > mHandles; // list of client handles 1373 // First handle in mHandles has highest priority and controls the effect module 1374 uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after 1375 // sending disable command. 1376 uint32_t mDisableWaitCnt; // current process() calls count during disable period. 1377 bool mSuspended; // effect is suspended: temporarily disabled by framework 1378 }; 1379 1380 // The EffectHandle class implements the IEffect interface. It provides resources 1381 // to receive parameter updates, keeps track of effect control 1382 // ownership and state and has a pointer to the EffectModule object it is controlling. 1383 // There is one EffectHandle object for each application controlling (or using) 1384 // an effect module. 1385 // The EffectHandle is obtained by calling AudioFlinger::createEffect(). 1386 class EffectHandle: public android::BnEffect { 1387 public: 1388 1389 EffectHandle(const sp<EffectModule>& effect, 1390 const sp<AudioFlinger::Client>& client, 1391 const sp<IEffectClient>& effectClient, 1392 int32_t priority); 1393 virtual ~EffectHandle(); 1394 1395 // IEffect 1396 virtual status_t enable(); 1397 virtual status_t disable(); 1398 virtual status_t command(uint32_t cmdCode, 1399 uint32_t cmdSize, 1400 void *pCmdData, 1401 uint32_t *replySize, 1402 void *pReplyData); 1403 virtual void disconnect(); 1404 private: 1405 void disconnect(bool unpinIfLast); 1406 public: 1407 virtual sp<IMemory> getCblk() const { return mCblkMemory; } 1408 virtual status_t onTransact(uint32_t code, const Parcel& data, 1409 Parcel* reply, uint32_t flags); 1410 1411 1412 // Give or take control of effect module 1413 // - hasControl: true if control is given, false if removed 1414 // - signal: true client app should be signaled of change, false otherwise 1415 // - enabled: state of the effect when control is passed 1416 void setControl(bool hasControl, bool signal, bool enabled); 1417 void commandExecuted(uint32_t cmdCode, 1418 uint32_t cmdSize, 1419 void *pCmdData, 1420 uint32_t replySize, 1421 void *pReplyData); 1422 void setEnabled(bool enabled); 1423 bool enabled() const { return mEnabled; } 1424 1425 // Getters 1426 int id() const { return mEffect->id(); } 1427 int priority() const { return mPriority; } 1428 bool hasControl() const { return mHasControl; } 1429 sp<EffectModule> effect() const { return mEffect; } 1430 1431 void dump(char* buffer, size_t size); 1432 1433 protected: 1434 friend class AudioFlinger; 1435 friend class EffectModule; 1436 EffectHandle(const EffectHandle&); 1437 EffectHandle& operator =(const EffectHandle&); 1438 1439 sp<EffectModule> mEffect; // pointer to controlled EffectModule 1440 sp<IEffectClient> mEffectClient; // callback interface for client notifications 1441 /*const*/ sp<Client> mClient; // client for shared memory allocation, see disconnect() 1442 sp<IMemory> mCblkMemory; // shared memory for control block 1443 effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory 1444 uint8_t* mBuffer; // pointer to parameter area in shared memory 1445 int mPriority; // client application priority to control the effect 1446 bool mHasControl; // true if this handle is controlling the effect 1447 bool mEnabled; // cached enable state: needed when the effect is 1448 // restored after being suspended 1449 }; 1450 1451 // the EffectChain class represents a group of effects associated to one audio session. 1452 // There can be any number of EffectChain objects per output mixer thread (PlaybackThread). 1453 // The EffecChain with session ID 0 contains global effects applied to the output mix. 1454 // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks) 1455 // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding 1456 // in the effect process order. When attached to a track (session ID != 0), it also provide it's own 1457 // input buffer used by the track as accumulation buffer. 1458 class EffectChain: public RefBase { 1459 public: 1460 EffectChain(const wp<ThreadBase>& wThread, int sessionId); 1461 EffectChain(ThreadBase *thread, int sessionId); 1462 virtual ~EffectChain(); 1463 1464 // special key used for an entry in mSuspendedEffects keyed vector 1465 // corresponding to a suspend all request. 1466 static const int kKeyForSuspendAll = 0; 1467 1468 // minimum duration during which we force calling effect process when last track on 1469 // a session is stopped or removed to allow effect tail to be rendered 1470 static const int kProcessTailDurationMs = 1000; 1471 1472 void process_l(); 1473 1474 void lock() { 1475 mLock.lock(); 1476 } 1477 void unlock() { 1478 mLock.unlock(); 1479 } 1480 1481 status_t addEffect_l(const sp<EffectModule>& handle); 1482 size_t removeEffect_l(const sp<EffectModule>& handle); 1483 1484 int sessionId() const { return mSessionId; } 1485 void setSessionId(int sessionId) { mSessionId = sessionId; } 1486 1487 sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor); 1488 sp<EffectModule> getEffectFromId_l(int id); 1489 sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type); 1490 bool setVolume_l(uint32_t *left, uint32_t *right); 1491 void setDevice_l(uint32_t device); 1492 void setMode_l(audio_mode_t mode); 1493 1494 void setInBuffer(int16_t *buffer, bool ownsBuffer = false) { 1495 mInBuffer = buffer; 1496 mOwnInBuffer = ownsBuffer; 1497 } 1498 int16_t *inBuffer() const { 1499 return mInBuffer; 1500 } 1501 void setOutBuffer(int16_t *buffer) { 1502 mOutBuffer = buffer; 1503 } 1504 int16_t *outBuffer() const { 1505 return mOutBuffer; 1506 } 1507 1508 void incTrackCnt() { android_atomic_inc(&mTrackCnt); } 1509 void decTrackCnt() { android_atomic_dec(&mTrackCnt); } 1510 int32_t trackCnt() const { return mTrackCnt;} 1511 1512 void incActiveTrackCnt() { android_atomic_inc(&mActiveTrackCnt); 1513 mTailBufferCount = mMaxTailBuffers; } 1514 void decActiveTrackCnt() { android_atomic_dec(&mActiveTrackCnt); } 1515 int32_t activeTrackCnt() const { return mActiveTrackCnt;} 1516 1517 uint32_t strategy() const { return mStrategy; } 1518 void setStrategy(uint32_t strategy) 1519 { mStrategy = strategy; } 1520 1521 // suspend effect of the given type 1522 void setEffectSuspended_l(const effect_uuid_t *type, 1523 bool suspend); 1524 // suspend all eligible effects 1525 void setEffectSuspendedAll_l(bool suspend); 1526 // check if effects should be suspend or restored when a given effect is enable or disabled 1527 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 1528 bool enabled); 1529 1530 status_t dump(int fd, const Vector<String16>& args); 1531 1532 protected: 1533 friend class AudioFlinger; 1534 EffectChain(const EffectChain&); 1535 EffectChain& operator =(const EffectChain&); 1536 1537 class SuspendedEffectDesc : public RefBase { 1538 public: 1539 SuspendedEffectDesc() : mRefCount(0) {} 1540 1541 int mRefCount; 1542 effect_uuid_t mType; 1543 wp<EffectModule> mEffect; 1544 }; 1545 1546 // get a list of effect modules to suspend when an effect of the type 1547 // passed is enabled. 1548 void getSuspendEligibleEffects(Vector< sp<EffectModule> > &effects); 1549 1550 // get an effect module if it is currently enable 1551 sp<EffectModule> getEffectIfEnabled(const effect_uuid_t *type); 1552 // true if the effect whose descriptor is passed can be suspended 1553 // OEMs can modify the rules implemented in this method to exclude specific effect 1554 // types or implementations from the suspend/restore mechanism. 1555 bool isEffectEligibleForSuspend(const effect_descriptor_t& desc); 1556 1557 wp<ThreadBase> mThread; // parent mixer thread 1558 Mutex mLock; // mutex protecting effect list 1559 Vector<sp<EffectModule> > mEffects; // list of effect modules 1560 int mSessionId; // audio session ID 1561 int16_t *mInBuffer; // chain input buffer 1562 int16_t *mOutBuffer; // chain output buffer 1563 volatile int32_t mActiveTrackCnt; // number of active tracks connected 1564 volatile int32_t mTrackCnt; // number of tracks connected 1565 int32_t mTailBufferCount; // current effect tail buffer count 1566 int32_t mMaxTailBuffers; // maximum effect tail buffers 1567 bool mOwnInBuffer; // true if the chain owns its input buffer 1568 int mVolumeCtrlIdx; // index of insert effect having control over volume 1569 uint32_t mLeftVolume; // previous volume on left channel 1570 uint32_t mRightVolume; // previous volume on right channel 1571 uint32_t mNewLeftVolume; // new volume on left channel 1572 uint32_t mNewRightVolume; // new volume on right channel 1573 uint32_t mStrategy; // strategy for this effect chain 1574 // mSuspendedEffects lists all effect currently suspended in the chain 1575 // use effect type UUID timelow field as key. There is no real risk of identical 1576 // timeLow fields among effect type UUIDs. 1577 KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects; 1578 }; 1579 1580 // AudioStreamOut and AudioStreamIn are immutable, so their fields are const. 1581 // For emphasis, we could also make all pointers to them be "const *", 1582 // but that would clutter the code unnecessarily. 1583 1584 struct AudioStreamOut { 1585 audio_hw_device_t* const hwDev; 1586 audio_stream_out_t* const stream; 1587 1588 AudioStreamOut(audio_hw_device_t *dev, audio_stream_out_t *out) : 1589 hwDev(dev), stream(out) {} 1590 }; 1591 1592 struct AudioStreamIn { 1593 audio_hw_device_t* const hwDev; 1594 audio_stream_in_t* const stream; 1595 1596 AudioStreamIn(audio_hw_device_t *dev, audio_stream_in_t *in) : 1597 hwDev(dev), stream(in) {} 1598 }; 1599 1600 // for mAudioSessionRefs only 1601 struct AudioSessionRef { 1602 AudioSessionRef(int sessionid, pid_t pid) : 1603 mSessionid(sessionid), mPid(pid), mCnt(1) {} 1604 const int mSessionid; 1605 const pid_t mPid; 1606 int mCnt; 1607 }; 1608 1609 friend class RecordThread; 1610 friend class PlaybackThread; 1611 1612 enum master_volume_support { 1613 // MVS_NONE: 1614 // Audio HAL has no support for master volume, either setting or 1615 // getting. All master volume control must be implemented in SW by the 1616 // AudioFlinger mixing core. 1617 MVS_NONE, 1618 1619 // MVS_SETONLY: 1620 // Audio HAL has support for setting master volume, but not for getting 1621 // master volume (original HAL design did not include a getter). 1622 // AudioFlinger needs to keep track of the last set master volume in 1623 // addition to needing to set an initial, default, master volume at HAL 1624 // load time. 1625 MVS_SETONLY, 1626 1627 // MVS_FULL: 1628 // Audio HAL has support both for setting and getting master volume. 1629 // AudioFlinger should send all set and get master volume requests 1630 // directly to the HAL. 1631 MVS_FULL, 1632 }; 1633 1634 mutable Mutex mLock; 1635 1636 DefaultKeyedVector< pid_t, wp<Client> > mClients; // see ~Client() 1637 1638 mutable Mutex mHardwareLock; 1639 1640 // These two fields are immutable after onFirstRef(), so no lock needed to access 1641 audio_hw_device_t* mPrimaryHardwareDev; // mAudioHwDevs[0] or NULL 1642 Vector<audio_hw_device_t*> mAudioHwDevs; 1643 1644 // for dump, indicates which hardware operation is currently in progress (but not stream ops) 1645 enum hardware_call_state { 1646 AUDIO_HW_IDLE = 0, // no operation in progress 1647 AUDIO_HW_INIT, // init_check 1648 AUDIO_HW_OUTPUT_OPEN, // open_output_stream 1649 AUDIO_HW_OUTPUT_CLOSE, // unused 1650 AUDIO_HW_INPUT_OPEN, // unused 1651 AUDIO_HW_INPUT_CLOSE, // unused 1652 AUDIO_HW_STANDBY, // unused 1653 AUDIO_HW_SET_MASTER_VOLUME, // set_master_volume 1654 AUDIO_HW_GET_ROUTING, // unused 1655 AUDIO_HW_SET_ROUTING, // unused 1656 AUDIO_HW_GET_MODE, // unused 1657 AUDIO_HW_SET_MODE, // set_mode 1658 AUDIO_HW_GET_MIC_MUTE, // get_mic_mute 1659 AUDIO_HW_SET_MIC_MUTE, // set_mic_mute 1660 AUDIO_HW_SET_VOICE_VOLUME, // set_voice_volume 1661 AUDIO_HW_SET_PARAMETER, // set_parameters 1662 AUDIO_HW_GET_INPUT_BUFFER_SIZE, // get_input_buffer_size 1663 AUDIO_HW_GET_MASTER_VOLUME, // get_master_volume 1664 AUDIO_HW_GET_PARAMETER, // get_parameters 1665 }; 1666 1667 mutable hardware_call_state mHardwareStatus; // for dump only 1668 1669 1670 DefaultKeyedVector< audio_io_handle_t, sp<PlaybackThread> > mPlaybackThreads; 1671 stream_type_t mStreamTypes[AUDIO_STREAM_CNT]; 1672 1673 // both are protected by mLock 1674 float mMasterVolume; 1675 float mMasterVolumeSW; 1676 master_volume_support mMasterVolumeSupportLvl; 1677 bool mMasterMute; 1678 1679 DefaultKeyedVector< audio_io_handle_t, sp<RecordThread> > mRecordThreads; 1680 1681 DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients; 1682 volatile int32_t mNextUniqueId; // updated by android_atomic_inc 1683 audio_mode_t mMode; 1684 bool mBtNrecIsOff; 1685 1686 // protected by mLock 1687 Vector<AudioSessionRef*> mAudioSessionRefs; 1688 1689 float masterVolume_l() const; 1690 float masterVolumeSW_l() const { return mMasterVolumeSW; } 1691 bool masterMute_l() const { return mMasterMute; } 1692 1693private: 1694 sp<Client> registerPid_l(pid_t pid); // always returns non-0 1695 1696}; 1697 1698 1699// ---------------------------------------------------------------------------- 1700 1701}; // namespace android 1702 1703#endif // ANDROID_AUDIO_FLINGER_H 1704