AudioFlinger.h revision a3707a280177e934a1e0a15660d9176663b7fc17
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 private: 924 925 friend class AudioFlinger; 926 friend class OutputTrack; 927 friend class Track; 928 friend class TrackBase; 929 friend class MixerThread; 930 friend class DirectOutputThread; 931 friend class DuplicatingThread; 932 933 PlaybackThread(const Client&); 934 PlaybackThread& operator = (const PlaybackThread&); 935 936 status_t addTrack_l(const sp<Track>& track); 937 void destroyTrack_l(const sp<Track>& track); 938 void removeTrack_l(const sp<Track>& track); 939 940 void readOutputParameters(); 941 942 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 943 status_t dumpTracks(int fd, const Vector<String16>& args); 944 945 SortedVector< sp<Track> > mTracks; 946 // mStreamTypes[] uses 1 additional stream type internally for the OutputTrack used by DuplicatingThread 947 stream_type_t mStreamTypes[AUDIO_STREAM_CNT + 1]; 948 AudioStreamOut *mOutput; 949 float mMasterVolume; 950 nsecs_t mLastWriteTime; 951 int mNumWrites; 952 int mNumDelayedWrites; 953 bool mInWrite; 954 955 // FIXME rename these former local variables of threadLoop to standard "m" names 956 nsecs_t standbyTime; 957 size_t mixBufferSize; 958 uint32_t activeSleepTime; 959 uint32_t idleSleepTime; 960 uint32_t sleepTime; 961 // mixerStatus was local to the while !exitingPending loop 962 mixer_state mixerStatus; 963 964 // FIXME move these declarations into the specific sub-class that needs them 965 // MIXER only 966 bool longStandbyExit; 967 uint32_t sleepTimeShift; 968 // MIXER and DUPLICATING only 969 mixer_state mPrevMixerStatus; // previous status returned by prepareTracks_l() 970 // DIRECT only 971 nsecs_t standbyDelay; 972 // activeTrack was local to the while !exitingPending loop 973 sp<Track> activeTrack; 974 // DUPLICATING only 975 SortedVector < sp<OutputTrack> > outputTracks; 976 uint32_t writeFrames; 977 SortedVector < sp<OutputTrack> > mOutputTracks; 978 }; 979 980 class MixerThread : public PlaybackThread { 981 public: 982 MixerThread (const sp<AudioFlinger>& audioFlinger, 983 AudioStreamOut* output, 984 audio_io_handle_t id, 985 uint32_t device, 986 type_t type = MIXER); 987 virtual ~MixerThread(); 988 989 // Thread virtuals 990 991 void invalidateTracks(audio_stream_type_t streamType); 992 virtual bool checkForNewParameters_l(); 993 virtual status_t dumpInternals(int fd, const Vector<String16>& args); 994 995 protected: 996 virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove); 997 virtual int getTrackName_l(); 998 virtual void deleteTrackName_l(int name); 999 virtual uint32_t idleSleepTimeUs(); 1000 virtual uint32_t suspendSleepTimeUs(); 1001 1002 // threadLoop snippets 1003 virtual void threadLoop_mix(); 1004 virtual void threadLoop_sleepTime(); 1005 1006 AudioMixer* mAudioMixer; 1007 }; 1008 1009 class DirectOutputThread : public PlaybackThread { 1010 public: 1011 1012 DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, 1013 audio_io_handle_t id, uint32_t device); 1014 virtual ~DirectOutputThread(); 1015 1016 // Thread virtuals 1017 1018 virtual bool checkForNewParameters_l(); 1019 1020 protected: 1021 virtual int getTrackName_l(); 1022 virtual void deleteTrackName_l(int name); 1023 virtual uint32_t activeSleepTimeUs(); 1024 virtual uint32_t idleSleepTimeUs(); 1025 virtual uint32_t suspendSleepTimeUs(); 1026 1027 // threadLoop snippets 1028 virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove); 1029 virtual void threadLoop_mix(); 1030 virtual void threadLoop_sleepTime(); 1031 virtual void applyVolume(); 1032 1033 // volumes last sent to audio HAL with stream->set_volume() 1034 // FIXME use standard representation and names 1035 float mLeftVolFloat; 1036 float mRightVolFloat; 1037 uint16_t mLeftVolShort; 1038 uint16_t mRightVolShort; 1039 1040 // FIXME rename these former local variables of threadLoop to standard names 1041 // next 3 were local to the while !exitingPending loop 1042 bool rampVolume; 1043 uint16_t leftVol; 1044 uint16_t rightVol; 1045 }; 1046 1047 class DuplicatingThread : public MixerThread { 1048 public: 1049 DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, 1050 audio_io_handle_t id); 1051 virtual ~DuplicatingThread(); 1052 1053 // Thread virtuals 1054 void addOutputTrack(MixerThread* thread); 1055 void removeOutputTrack(MixerThread* thread); 1056 uint32_t waitTimeMs() { return mWaitTimeMs; } 1057 protected: 1058 virtual uint32_t activeSleepTimeUs(); 1059 1060 private: 1061 bool outputsReady(const SortedVector<sp<OutputTrack> > &outputTracks); 1062 protected: 1063 // threadLoop snippets 1064 virtual void threadLoop_mix(); 1065 virtual void threadLoop_sleepTime(); 1066 virtual void threadLoop_write(); 1067 virtual void threadLoop_standby(); 1068 1069 // called from threadLoop, addOutputTrack, removeOutputTrack 1070 virtual void updateWaitTime_l(); 1071 private: 1072 1073 uint32_t mWaitTimeMs; 1074 }; 1075 1076 PlaybackThread *checkPlaybackThread_l(audio_io_handle_t output) const; 1077 MixerThread *checkMixerThread_l(audio_io_handle_t output) const; 1078 RecordThread *checkRecordThread_l(audio_io_handle_t input) const; 1079 // no range check, AudioFlinger::mLock held 1080 bool streamMute_l(audio_stream_type_t stream) const 1081 { return mStreamTypes[stream].mute; } 1082 // no range check, doesn't check per-thread stream volume, AudioFlinger::mLock held 1083 float streamVolume_l(audio_stream_type_t stream) const 1084 { return mStreamTypes[stream].volume; } 1085 void audioConfigChanged_l(int event, audio_io_handle_t ioHandle, void *param2); 1086 1087 // allocate an audio_io_handle_t, session ID, or effect ID 1088 uint32_t nextUniqueId(); 1089 1090 status_t moveEffectChain_l(int sessionId, 1091 PlaybackThread *srcThread, 1092 PlaybackThread *dstThread, 1093 bool reRegister); 1094 // return thread associated with primary hardware device, or NULL 1095 PlaybackThread *primaryPlaybackThread_l() const; 1096 uint32_t primaryOutputDevice_l() const; 1097 1098 friend class AudioBuffer; 1099 1100 // server side of the client's IAudioTrack 1101 class TrackHandle : public android::BnAudioTrack { 1102 public: 1103 TrackHandle(const sp<PlaybackThread::Track>& track); 1104 virtual ~TrackHandle(); 1105 virtual sp<IMemory> getCblk() const; 1106 virtual status_t start(pid_t tid); 1107 virtual void stop(); 1108 virtual void flush(); 1109 virtual void mute(bool); 1110 virtual void pause(); 1111 virtual status_t attachAuxEffect(int effectId); 1112 virtual status_t allocateTimedBuffer(size_t size, 1113 sp<IMemory>* buffer); 1114 virtual status_t queueTimedBuffer(const sp<IMemory>& buffer, 1115 int64_t pts); 1116 virtual status_t setMediaTimeTransform(const LinearTransform& xform, 1117 int target); 1118 virtual status_t onTransact( 1119 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 1120 private: 1121 const sp<PlaybackThread::Track> mTrack; 1122 }; 1123 1124 friend class Client; 1125 friend class PlaybackThread::Track; 1126 1127 1128 void removeClient_l(pid_t pid); 1129 void removeNotificationClient(pid_t pid); 1130 1131 1132 // record thread 1133 class RecordThread : public ThreadBase, public AudioBufferProvider 1134 { 1135 public: 1136 1137 // record track 1138 class RecordTrack : public TrackBase { 1139 public: 1140 RecordTrack(RecordThread *thread, 1141 const sp<Client>& client, 1142 uint32_t sampleRate, 1143 audio_format_t format, 1144 uint32_t channelMask, 1145 int frameCount, 1146 int sessionId); 1147 virtual ~RecordTrack(); 1148 1149 virtual status_t start(pid_t tid); 1150 virtual void stop(); 1151 1152 bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; } 1153 bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; } 1154 1155 void dump(char* buffer, size_t size); 1156 1157 private: 1158 friend class AudioFlinger; 1159 friend class RecordThread; 1160 1161 RecordTrack(const RecordTrack&); 1162 RecordTrack& operator = (const RecordTrack&); 1163 1164 // AudioBufferProvider interface 1165 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts = kInvalidPTS); 1166 // releaseBuffer() not overridden 1167 1168 bool mOverflow; 1169 }; 1170 1171 1172 RecordThread(const sp<AudioFlinger>& audioFlinger, 1173 AudioStreamIn *input, 1174 uint32_t sampleRate, 1175 uint32_t channels, 1176 audio_io_handle_t id, 1177 uint32_t device); 1178 virtual ~RecordThread(); 1179 1180 // Thread 1181 virtual bool threadLoop(); 1182 virtual status_t readyToRun(); 1183 1184 // RefBase 1185 virtual void onFirstRef(); 1186 1187 virtual status_t initCheck() const { return (mInput == NULL) ? NO_INIT : NO_ERROR; } 1188 sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l( 1189 const sp<AudioFlinger::Client>& client, 1190 uint32_t sampleRate, 1191 audio_format_t format, 1192 int channelMask, 1193 int frameCount, 1194 int sessionId, 1195 status_t *status); 1196 1197 status_t start(RecordTrack* recordTrack); 1198 status_t start(RecordTrack* recordTrack, pid_t tid); 1199 void stop(RecordTrack* recordTrack); 1200 status_t dump(int fd, const Vector<String16>& args); 1201 AudioStreamIn* getInput() const; 1202 AudioStreamIn* clearInput(); 1203 virtual audio_stream_t* stream(); 1204 1205 // AudioBufferProvider interface 1206 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts); 1207 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 1208 1209 virtual bool checkForNewParameters_l(); 1210 virtual String8 getParameters(const String8& keys); 1211 virtual void audioConfigChanged_l(int event, int param = 0); 1212 void readInputParameters(); 1213 virtual unsigned int getInputFramesLost(); 1214 1215 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 1216 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 1217 virtual uint32_t hasAudioSession(int sessionId); 1218 RecordTrack* track(); 1219 1220 private: 1221 RecordThread(); 1222 AudioStreamIn *mInput; 1223 RecordTrack* mTrack; 1224 sp<RecordTrack> mActiveTrack; 1225 Condition mStartStopCond; 1226 AudioResampler *mResampler; 1227 int32_t *mRsmpOutBuffer; 1228 int16_t *mRsmpInBuffer; 1229 size_t mRsmpInIndex; 1230 size_t mInputBytes; 1231 const int mReqChannelCount; 1232 const uint32_t mReqSampleRate; 1233 ssize_t mBytesRead; 1234 }; 1235 1236 // server side of the client's IAudioRecord 1237 class RecordHandle : public android::BnAudioRecord { 1238 public: 1239 RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack); 1240 virtual ~RecordHandle(); 1241 virtual sp<IMemory> getCblk() const; 1242 virtual status_t start(pid_t tid); 1243 virtual void stop(); 1244 virtual status_t onTransact( 1245 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 1246 private: 1247 const sp<RecordThread::RecordTrack> mRecordTrack; 1248 }; 1249 1250 //--- Audio Effect Management 1251 1252 // EffectModule and EffectChain classes both have their own mutex to protect 1253 // state changes or resource modifications. Always respect the following order 1254 // if multiple mutexes must be acquired to avoid cross deadlock: 1255 // AudioFlinger -> ThreadBase -> EffectChain -> EffectModule 1256 1257 // The EffectModule class is a wrapper object controlling the effect engine implementation 1258 // in the effect library. It prevents concurrent calls to process() and command() functions 1259 // from different client threads. It keeps a list of EffectHandle objects corresponding 1260 // to all client applications using this effect and notifies applications of effect state, 1261 // control or parameter changes. It manages the activation state machine to send appropriate 1262 // reset, enable, disable commands to effect engine and provide volume 1263 // ramping when effects are activated/deactivated. 1264 // When controlling an auxiliary effect, the EffectModule also provides an input buffer used by 1265 // the attached track(s) to accumulate their auxiliary channel. 1266 class EffectModule: public RefBase { 1267 public: 1268 EffectModule(ThreadBase *thread, 1269 const wp<AudioFlinger::EffectChain>& chain, 1270 effect_descriptor_t *desc, 1271 int id, 1272 int sessionId); 1273 virtual ~EffectModule(); 1274 1275 enum effect_state { 1276 IDLE, 1277 RESTART, 1278 STARTING, 1279 ACTIVE, 1280 STOPPING, 1281 STOPPED, 1282 DESTROYED 1283 }; 1284 1285 int id() const { return mId; } 1286 void process(); 1287 void updateState(); 1288 status_t command(uint32_t cmdCode, 1289 uint32_t cmdSize, 1290 void *pCmdData, 1291 uint32_t *replySize, 1292 void *pReplyData); 1293 1294 void reset_l(); 1295 status_t configure(); 1296 status_t init(); 1297 effect_state state() const { 1298 return mState; 1299 } 1300 uint32_t status() { 1301 return mStatus; 1302 } 1303 int sessionId() const { 1304 return mSessionId; 1305 } 1306 status_t setEnabled(bool enabled); 1307 bool isEnabled() const; 1308 bool isProcessEnabled() const; 1309 1310 void setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; } 1311 int16_t *inBuffer() { return mConfig.inputCfg.buffer.s16; } 1312 void setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; } 1313 int16_t *outBuffer() { return mConfig.outputCfg.buffer.s16; } 1314 void setChain(const wp<EffectChain>& chain) { mChain = chain; } 1315 void setThread(const wp<ThreadBase>& thread) { mThread = thread; } 1316 const wp<ThreadBase>& thread() { return mThread; } 1317 1318 status_t addHandle(const sp<EffectHandle>& handle); 1319 void disconnect(const wp<EffectHandle>& handle, bool unpinIfLast); 1320 size_t removeHandle (const wp<EffectHandle>& handle); 1321 1322 effect_descriptor_t& desc() { return mDescriptor; } 1323 wp<EffectChain>& chain() { return mChain; } 1324 1325 status_t setDevice(uint32_t device); 1326 status_t setVolume(uint32_t *left, uint32_t *right, bool controller); 1327 status_t setMode(audio_mode_t mode); 1328 status_t start(); 1329 status_t stop(); 1330 void setSuspended(bool suspended); 1331 bool suspended() const; 1332 1333 sp<EffectHandle> controlHandle(); 1334 1335 bool isPinned() const { return mPinned; } 1336 void unPin() { mPinned = false; } 1337 1338 status_t dump(int fd, const Vector<String16>& args); 1339 1340 protected: 1341 friend class EffectHandle; 1342 friend class AudioFlinger; 1343 bool mPinned; 1344 1345 // Maximum time allocated to effect engines to complete the turn off sequence 1346 static const uint32_t MAX_DISABLE_TIME_MS = 10000; 1347 1348 EffectModule(const EffectModule&); 1349 EffectModule& operator = (const EffectModule&); 1350 1351 status_t start_l(); 1352 status_t stop_l(); 1353 1354mutable Mutex mLock; // mutex for process, commands and handles list protection 1355 wp<ThreadBase> mThread; // parent thread 1356 wp<EffectChain> mChain; // parent effect chain 1357 int mId; // this instance unique ID 1358 int mSessionId; // audio session ID 1359 effect_descriptor_t mDescriptor;// effect descriptor received from effect engine 1360 effect_config_t mConfig; // input and output audio configuration 1361 effect_handle_t mEffectInterface; // Effect module C API 1362 status_t mStatus; // initialization status 1363 effect_state mState; // current activation state 1364 Vector< wp<EffectHandle> > mHandles; // list of client handles 1365 // First handle in mHandles has highest priority and controls the effect module 1366 uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after 1367 // sending disable command. 1368 uint32_t mDisableWaitCnt; // current process() calls count during disable period. 1369 bool mSuspended; // effect is suspended: temporarily disabled by framework 1370 }; 1371 1372 // The EffectHandle class implements the IEffect interface. It provides resources 1373 // to receive parameter updates, keeps track of effect control 1374 // ownership and state and has a pointer to the EffectModule object it is controlling. 1375 // There is one EffectHandle object for each application controlling (or using) 1376 // an effect module. 1377 // The EffectHandle is obtained by calling AudioFlinger::createEffect(). 1378 class EffectHandle: public android::BnEffect { 1379 public: 1380 1381 EffectHandle(const sp<EffectModule>& effect, 1382 const sp<AudioFlinger::Client>& client, 1383 const sp<IEffectClient>& effectClient, 1384 int32_t priority); 1385 virtual ~EffectHandle(); 1386 1387 // IEffect 1388 virtual status_t enable(); 1389 virtual status_t disable(); 1390 virtual status_t command(uint32_t cmdCode, 1391 uint32_t cmdSize, 1392 void *pCmdData, 1393 uint32_t *replySize, 1394 void *pReplyData); 1395 virtual void disconnect(); 1396 private: 1397 void disconnect(bool unpinIfLast); 1398 public: 1399 virtual sp<IMemory> getCblk() const { return mCblkMemory; } 1400 virtual status_t onTransact(uint32_t code, const Parcel& data, 1401 Parcel* reply, uint32_t flags); 1402 1403 1404 // Give or take control of effect module 1405 // - hasControl: true if control is given, false if removed 1406 // - signal: true client app should be signaled of change, false otherwise 1407 // - enabled: state of the effect when control is passed 1408 void setControl(bool hasControl, bool signal, bool enabled); 1409 void commandExecuted(uint32_t cmdCode, 1410 uint32_t cmdSize, 1411 void *pCmdData, 1412 uint32_t replySize, 1413 void *pReplyData); 1414 void setEnabled(bool enabled); 1415 bool enabled() const { return mEnabled; } 1416 1417 // Getters 1418 int id() const { return mEffect->id(); } 1419 int priority() const { return mPriority; } 1420 bool hasControl() const { return mHasControl; } 1421 sp<EffectModule> effect() const { return mEffect; } 1422 1423 void dump(char* buffer, size_t size); 1424 1425 protected: 1426 friend class AudioFlinger; 1427 friend class EffectModule; 1428 EffectHandle(const EffectHandle&); 1429 EffectHandle& operator =(const EffectHandle&); 1430 1431 sp<EffectModule> mEffect; // pointer to controlled EffectModule 1432 sp<IEffectClient> mEffectClient; // callback interface for client notifications 1433 /*const*/ sp<Client> mClient; // client for shared memory allocation, see disconnect() 1434 sp<IMemory> mCblkMemory; // shared memory for control block 1435 effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory 1436 uint8_t* mBuffer; // pointer to parameter area in shared memory 1437 int mPriority; // client application priority to control the effect 1438 bool mHasControl; // true if this handle is controlling the effect 1439 bool mEnabled; // cached enable state: needed when the effect is 1440 // restored after being suspended 1441 }; 1442 1443 // the EffectChain class represents a group of effects associated to one audio session. 1444 // There can be any number of EffectChain objects per output mixer thread (PlaybackThread). 1445 // The EffecChain with session ID 0 contains global effects applied to the output mix. 1446 // Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks) 1447 // are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding 1448 // in the effect process order. When attached to a track (session ID != 0), it also provide it's own 1449 // input buffer used by the track as accumulation buffer. 1450 class EffectChain: public RefBase { 1451 public: 1452 EffectChain(const wp<ThreadBase>& wThread, int sessionId); 1453 EffectChain(ThreadBase *thread, int sessionId); 1454 virtual ~EffectChain(); 1455 1456 // special key used for an entry in mSuspendedEffects keyed vector 1457 // corresponding to a suspend all request. 1458 static const int kKeyForSuspendAll = 0; 1459 1460 // minimum duration during which we force calling effect process when last track on 1461 // a session is stopped or removed to allow effect tail to be rendered 1462 static const int kProcessTailDurationMs = 1000; 1463 1464 void process_l(); 1465 1466 void lock() { 1467 mLock.lock(); 1468 } 1469 void unlock() { 1470 mLock.unlock(); 1471 } 1472 1473 status_t addEffect_l(const sp<EffectModule>& handle); 1474 size_t removeEffect_l(const sp<EffectModule>& handle); 1475 1476 int sessionId() const { return mSessionId; } 1477 void setSessionId(int sessionId) { mSessionId = sessionId; } 1478 1479 sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor); 1480 sp<EffectModule> getEffectFromId_l(int id); 1481 sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type); 1482 bool setVolume_l(uint32_t *left, uint32_t *right); 1483 void setDevice_l(uint32_t device); 1484 void setMode_l(audio_mode_t mode); 1485 1486 void setInBuffer(int16_t *buffer, bool ownsBuffer = false) { 1487 mInBuffer = buffer; 1488 mOwnInBuffer = ownsBuffer; 1489 } 1490 int16_t *inBuffer() const { 1491 return mInBuffer; 1492 } 1493 void setOutBuffer(int16_t *buffer) { 1494 mOutBuffer = buffer; 1495 } 1496 int16_t *outBuffer() const { 1497 return mOutBuffer; 1498 } 1499 1500 void incTrackCnt() { android_atomic_inc(&mTrackCnt); } 1501 void decTrackCnt() { android_atomic_dec(&mTrackCnt); } 1502 int32_t trackCnt() const { return mTrackCnt;} 1503 1504 void incActiveTrackCnt() { android_atomic_inc(&mActiveTrackCnt); 1505 mTailBufferCount = mMaxTailBuffers; } 1506 void decActiveTrackCnt() { android_atomic_dec(&mActiveTrackCnt); } 1507 int32_t activeTrackCnt() const { return mActiveTrackCnt;} 1508 1509 uint32_t strategy() const { return mStrategy; } 1510 void setStrategy(uint32_t strategy) 1511 { mStrategy = strategy; } 1512 1513 // suspend effect of the given type 1514 void setEffectSuspended_l(const effect_uuid_t *type, 1515 bool suspend); 1516 // suspend all eligible effects 1517 void setEffectSuspendedAll_l(bool suspend); 1518 // check if effects should be suspend or restored when a given effect is enable or disabled 1519 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 1520 bool enabled); 1521 1522 status_t dump(int fd, const Vector<String16>& args); 1523 1524 protected: 1525 friend class AudioFlinger; 1526 EffectChain(const EffectChain&); 1527 EffectChain& operator =(const EffectChain&); 1528 1529 class SuspendedEffectDesc : public RefBase { 1530 public: 1531 SuspendedEffectDesc() : mRefCount(0) {} 1532 1533 int mRefCount; 1534 effect_uuid_t mType; 1535 wp<EffectModule> mEffect; 1536 }; 1537 1538 // get a list of effect modules to suspend when an effect of the type 1539 // passed is enabled. 1540 void getSuspendEligibleEffects(Vector< sp<EffectModule> > &effects); 1541 1542 // get an effect module if it is currently enable 1543 sp<EffectModule> getEffectIfEnabled(const effect_uuid_t *type); 1544 // true if the effect whose descriptor is passed can be suspended 1545 // OEMs can modify the rules implemented in this method to exclude specific effect 1546 // types or implementations from the suspend/restore mechanism. 1547 bool isEffectEligibleForSuspend(const effect_descriptor_t& desc); 1548 1549 wp<ThreadBase> mThread; // parent mixer thread 1550 Mutex mLock; // mutex protecting effect list 1551 Vector<sp<EffectModule> > mEffects; // list of effect modules 1552 int mSessionId; // audio session ID 1553 int16_t *mInBuffer; // chain input buffer 1554 int16_t *mOutBuffer; // chain output buffer 1555 volatile int32_t mActiveTrackCnt; // number of active tracks connected 1556 volatile int32_t mTrackCnt; // number of tracks connected 1557 int32_t mTailBufferCount; // current effect tail buffer count 1558 int32_t mMaxTailBuffers; // maximum effect tail buffers 1559 bool mOwnInBuffer; // true if the chain owns its input buffer 1560 int mVolumeCtrlIdx; // index of insert effect having control over volume 1561 uint32_t mLeftVolume; // previous volume on left channel 1562 uint32_t mRightVolume; // previous volume on right channel 1563 uint32_t mNewLeftVolume; // new volume on left channel 1564 uint32_t mNewRightVolume; // new volume on right channel 1565 uint32_t mStrategy; // strategy for this effect chain 1566 // mSuspendedEffects lists all effect currently suspended in the chain 1567 // use effect type UUID timelow field as key. There is no real risk of identical 1568 // timeLow fields among effect type UUIDs. 1569 KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects; 1570 }; 1571 1572 // AudioStreamOut and AudioStreamIn are immutable, so their fields are const. 1573 // For emphasis, we could also make all pointers to them be "const *", 1574 // but that would clutter the code unnecessarily. 1575 1576 struct AudioStreamOut { 1577 audio_hw_device_t* const hwDev; 1578 audio_stream_out_t* const stream; 1579 1580 AudioStreamOut(audio_hw_device_t *dev, audio_stream_out_t *out) : 1581 hwDev(dev), stream(out) {} 1582 }; 1583 1584 struct AudioStreamIn { 1585 audio_hw_device_t* const hwDev; 1586 audio_stream_in_t* const stream; 1587 1588 AudioStreamIn(audio_hw_device_t *dev, audio_stream_in_t *in) : 1589 hwDev(dev), stream(in) {} 1590 }; 1591 1592 // for mAudioSessionRefs only 1593 struct AudioSessionRef { 1594 AudioSessionRef(int sessionid, pid_t pid) : 1595 mSessionid(sessionid), mPid(pid), mCnt(1) {} 1596 const int mSessionid; 1597 const pid_t mPid; 1598 int mCnt; 1599 }; 1600 1601 friend class RecordThread; 1602 friend class PlaybackThread; 1603 1604 enum master_volume_support { 1605 // MVS_NONE: 1606 // Audio HAL has no support for master volume, either setting or 1607 // getting. All master volume control must be implemented in SW by the 1608 // AudioFlinger mixing core. 1609 MVS_NONE, 1610 1611 // MVS_SETONLY: 1612 // Audio HAL has support for setting master volume, but not for getting 1613 // master volume (original HAL design did not include a getter). 1614 // AudioFlinger needs to keep track of the last set master volume in 1615 // addition to needing to set an initial, default, master volume at HAL 1616 // load time. 1617 MVS_SETONLY, 1618 1619 // MVS_FULL: 1620 // Audio HAL has support both for setting and getting master volume. 1621 // AudioFlinger should send all set and get master volume requests 1622 // directly to the HAL. 1623 MVS_FULL, 1624 }; 1625 1626 mutable Mutex mLock; 1627 1628 DefaultKeyedVector< pid_t, wp<Client> > mClients; // see ~Client() 1629 1630 mutable Mutex mHardwareLock; 1631 1632 // These two fields are immutable after onFirstRef(), so no lock needed to access 1633 audio_hw_device_t* mPrimaryHardwareDev; // mAudioHwDevs[0] or NULL 1634 Vector<audio_hw_device_t*> mAudioHwDevs; 1635 1636 // for dump, indicates which hardware operation is currently in progress (but not stream ops) 1637 enum hardware_call_state { 1638 AUDIO_HW_IDLE = 0, // no operation in progress 1639 AUDIO_HW_INIT, // init_check 1640 AUDIO_HW_OUTPUT_OPEN, // open_output_stream 1641 AUDIO_HW_OUTPUT_CLOSE, // unused 1642 AUDIO_HW_INPUT_OPEN, // unused 1643 AUDIO_HW_INPUT_CLOSE, // unused 1644 AUDIO_HW_STANDBY, // unused 1645 AUDIO_HW_SET_MASTER_VOLUME, // set_master_volume 1646 AUDIO_HW_GET_ROUTING, // unused 1647 AUDIO_HW_SET_ROUTING, // unused 1648 AUDIO_HW_GET_MODE, // unused 1649 AUDIO_HW_SET_MODE, // set_mode 1650 AUDIO_HW_GET_MIC_MUTE, // get_mic_mute 1651 AUDIO_HW_SET_MIC_MUTE, // set_mic_mute 1652 AUDIO_HW_SET_VOICE_VOLUME, // set_voice_volume 1653 AUDIO_HW_SET_PARAMETER, // set_parameters 1654 AUDIO_HW_GET_INPUT_BUFFER_SIZE, // get_input_buffer_size 1655 AUDIO_HW_GET_MASTER_VOLUME, // get_master_volume 1656 AUDIO_HW_GET_PARAMETER, // get_parameters 1657 }; 1658 1659 mutable hardware_call_state mHardwareStatus; // for dump only 1660 1661 1662 DefaultKeyedVector< audio_io_handle_t, sp<PlaybackThread> > mPlaybackThreads; 1663 stream_type_t mStreamTypes[AUDIO_STREAM_CNT]; 1664 1665 // both are protected by mLock 1666 float mMasterVolume; 1667 float mMasterVolumeSW; 1668 master_volume_support mMasterVolumeSupportLvl; 1669 bool mMasterMute; 1670 1671 DefaultKeyedVector< audio_io_handle_t, sp<RecordThread> > mRecordThreads; 1672 1673 DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients; 1674 volatile int32_t mNextUniqueId; // updated by android_atomic_inc 1675 audio_mode_t mMode; 1676 bool mBtNrecIsOff; 1677 1678 // protected by mLock 1679 Vector<AudioSessionRef*> mAudioSessionRefs; 1680 1681 float masterVolume_l() const; 1682 float masterVolumeSW_l() const { return mMasterVolumeSW; } 1683 bool masterMute_l() const { return mMasterMute; } 1684 1685private: 1686 sp<Client> registerPid_l(pid_t pid); // always returns non-0 1687 1688}; 1689 1690 1691// ---------------------------------------------------------------------------- 1692 1693}; // namespace android 1694 1695#endif // ANDROID_AUDIO_FLINGER_H 1696