1 /* 2 ** 3 ** Copyright 2012, 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 INCLUDING_FROM_AUDIOFLINGER_H 19 #error This header file should only be included from AudioFlinger.h 20 #endif 21 22 class ThreadBase : public Thread { 23 public: 24 25 #include "TrackBase.h" 26 27 enum type_t { 28 MIXER, // Thread class is MixerThread 29 DIRECT, // Thread class is DirectOutputThread 30 DUPLICATING, // Thread class is DuplicatingThread 31 RECORD, // Thread class is RecordThread 32 OFFLOAD // Thread class is OffloadThread 33 }; 34 35 ThreadBase(const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id, 36 audio_devices_t outDevice, audio_devices_t inDevice, type_t type); 37 virtual ~ThreadBase(); 38 39 virtual status_t readyToRun(); 40 41 void dumpBase(int fd, const Vector<String16>& args); 42 void dumpEffectChains(int fd, const Vector<String16>& args); 43 44 void clearPowerManager(); 45 46 // base for record and playback 47 enum { 48 CFG_EVENT_IO, 49 CFG_EVENT_PRIO, 50 CFG_EVENT_SET_PARAMETER, 51 CFG_EVENT_CREATE_AUDIO_PATCH, 52 CFG_EVENT_RELEASE_AUDIO_PATCH, 53 }; 54 55 class ConfigEventData: public RefBase { 56 public: 57 virtual ~ConfigEventData() {} 58 59 virtual void dump(char *buffer, size_t size) = 0; 60 protected: 61 ConfigEventData() {} 62 }; 63 64 // Config event sequence by client if status needed (e.g binder thread calling setParameters()): 65 // 1. create SetParameterConfigEvent. This sets mWaitStatus in config event 66 // 2. Lock mLock 67 // 3. Call sendConfigEvent_l(): Append to mConfigEvents and mWaitWorkCV.signal 68 // 4. sendConfigEvent_l() reads status from event->mStatus; 69 // 5. sendConfigEvent_l() returns status 70 // 6. Unlock 71 // 72 // Parameter sequence by server: threadLoop calling processConfigEvents_l(): 73 // 1. Lock mLock 74 // 2. If there is an entry in mConfigEvents proceed ... 75 // 3. Read first entry in mConfigEvents 76 // 4. Remove first entry from mConfigEvents 77 // 5. Process 78 // 6. Set event->mStatus 79 // 7. event->mCond.signal 80 // 8. Unlock 81 82 class ConfigEvent: public RefBase { 83 public: 84 virtual ~ConfigEvent() {} 85 86 void dump(char *buffer, size_t size) { mData->dump(buffer, size); } 87 88 const int mType; // event type e.g. CFG_EVENT_IO 89 Mutex mLock; // mutex associated with mCond 90 Condition mCond; // condition for status return 91 status_t mStatus; // status communicated to sender 92 bool mWaitStatus; // true if sender is waiting for status 93 sp<ConfigEventData> mData; // event specific parameter data 94 95 protected: 96 ConfigEvent(int type) : mType(type), mStatus(NO_ERROR), mWaitStatus(false), mData(NULL) {} 97 }; 98 99 class IoConfigEventData : public ConfigEventData { 100 public: 101 IoConfigEventData(int event, int param) : 102 mEvent(event), mParam(param) {} 103 104 virtual void dump(char *buffer, size_t size) { 105 snprintf(buffer, size, "IO event: event %d, param %d\n", mEvent, mParam); 106 } 107 108 const int mEvent; 109 const int mParam; 110 }; 111 112 class IoConfigEvent : public ConfigEvent { 113 public: 114 IoConfigEvent(int event, int param) : 115 ConfigEvent(CFG_EVENT_IO) { 116 mData = new IoConfigEventData(event, param); 117 } 118 virtual ~IoConfigEvent() {} 119 }; 120 121 class PrioConfigEventData : public ConfigEventData { 122 public: 123 PrioConfigEventData(pid_t pid, pid_t tid, int32_t prio) : 124 mPid(pid), mTid(tid), mPrio(prio) {} 125 126 virtual void dump(char *buffer, size_t size) { 127 snprintf(buffer, size, "Prio event: pid %d, tid %d, prio %d\n", mPid, mTid, mPrio); 128 } 129 130 const pid_t mPid; 131 const pid_t mTid; 132 const int32_t mPrio; 133 }; 134 135 class PrioConfigEvent : public ConfigEvent { 136 public: 137 PrioConfigEvent(pid_t pid, pid_t tid, int32_t prio) : 138 ConfigEvent(CFG_EVENT_PRIO) { 139 mData = new PrioConfigEventData(pid, tid, prio); 140 } 141 virtual ~PrioConfigEvent() {} 142 }; 143 144 class SetParameterConfigEventData : public ConfigEventData { 145 public: 146 SetParameterConfigEventData(String8 keyValuePairs) : 147 mKeyValuePairs(keyValuePairs) {} 148 149 virtual void dump(char *buffer, size_t size) { 150 snprintf(buffer, size, "KeyValue: %s\n", mKeyValuePairs.string()); 151 } 152 153 const String8 mKeyValuePairs; 154 }; 155 156 class SetParameterConfigEvent : public ConfigEvent { 157 public: 158 SetParameterConfigEvent(String8 keyValuePairs) : 159 ConfigEvent(CFG_EVENT_SET_PARAMETER) { 160 mData = new SetParameterConfigEventData(keyValuePairs); 161 mWaitStatus = true; 162 } 163 virtual ~SetParameterConfigEvent() {} 164 }; 165 166 class CreateAudioPatchConfigEventData : public ConfigEventData { 167 public: 168 CreateAudioPatchConfigEventData(const struct audio_patch patch, 169 audio_patch_handle_t handle) : 170 mPatch(patch), mHandle(handle) {} 171 172 virtual void dump(char *buffer, size_t size) { 173 snprintf(buffer, size, "Patch handle: %u\n", mHandle); 174 } 175 176 const struct audio_patch mPatch; 177 audio_patch_handle_t mHandle; 178 }; 179 180 class CreateAudioPatchConfigEvent : public ConfigEvent { 181 public: 182 CreateAudioPatchConfigEvent(const struct audio_patch patch, 183 audio_patch_handle_t handle) : 184 ConfigEvent(CFG_EVENT_CREATE_AUDIO_PATCH) { 185 mData = new CreateAudioPatchConfigEventData(patch, handle); 186 mWaitStatus = true; 187 } 188 virtual ~CreateAudioPatchConfigEvent() {} 189 }; 190 191 class ReleaseAudioPatchConfigEventData : public ConfigEventData { 192 public: 193 ReleaseAudioPatchConfigEventData(const audio_patch_handle_t handle) : 194 mHandle(handle) {} 195 196 virtual void dump(char *buffer, size_t size) { 197 snprintf(buffer, size, "Patch handle: %u\n", mHandle); 198 } 199 200 audio_patch_handle_t mHandle; 201 }; 202 203 class ReleaseAudioPatchConfigEvent : public ConfigEvent { 204 public: 205 ReleaseAudioPatchConfigEvent(const audio_patch_handle_t handle) : 206 ConfigEvent(CFG_EVENT_RELEASE_AUDIO_PATCH) { 207 mData = new ReleaseAudioPatchConfigEventData(handle); 208 mWaitStatus = true; 209 } 210 virtual ~ReleaseAudioPatchConfigEvent() {} 211 }; 212 213 class PMDeathRecipient : public IBinder::DeathRecipient { 214 public: 215 PMDeathRecipient(const wp<ThreadBase>& thread) : mThread(thread) {} 216 virtual ~PMDeathRecipient() {} 217 218 // IBinder::DeathRecipient 219 virtual void binderDied(const wp<IBinder>& who); 220 221 private: 222 PMDeathRecipient(const PMDeathRecipient&); 223 PMDeathRecipient& operator = (const PMDeathRecipient&); 224 225 wp<ThreadBase> mThread; 226 }; 227 228 virtual status_t initCheck() const = 0; 229 230 // static externally-visible 231 type_t type() const { return mType; } 232 audio_io_handle_t id() const { return mId;} 233 234 // dynamic externally-visible 235 uint32_t sampleRate() const { return mSampleRate; } 236 audio_channel_mask_t channelMask() const { return mChannelMask; } 237 audio_format_t format() const { return mHALFormat; } 238 uint32_t channelCount() const { return mChannelCount; } 239 // Called by AudioFlinger::frameCount(audio_io_handle_t output) and effects, 240 // and returns the [normal mix] buffer's frame count. 241 virtual size_t frameCount() const = 0; 242 size_t frameSize() const { return mFrameSize; } 243 244 // Should be "virtual status_t requestExitAndWait()" and override same 245 // method in Thread, but Thread::requestExitAndWait() is not yet virtual. 246 void exit(); 247 virtual bool checkForNewParameter_l(const String8& keyValuePair, 248 status_t& status) = 0; 249 virtual status_t setParameters(const String8& keyValuePairs); 250 virtual String8 getParameters(const String8& keys) = 0; 251 virtual void audioConfigChanged(int event, int param = 0) = 0; 252 // sendConfigEvent_l() must be called with ThreadBase::mLock held 253 // Can temporarily release the lock if waiting for a reply from 254 // processConfigEvents_l(). 255 status_t sendConfigEvent_l(sp<ConfigEvent>& event); 256 void sendIoConfigEvent(int event, int param = 0); 257 void sendIoConfigEvent_l(int event, int param = 0); 258 void sendPrioConfigEvent_l(pid_t pid, pid_t tid, int32_t prio); 259 status_t sendSetParameterConfigEvent_l(const String8& keyValuePair); 260 status_t sendCreateAudioPatchConfigEvent(const struct audio_patch *patch, 261 audio_patch_handle_t *handle); 262 status_t sendReleaseAudioPatchConfigEvent(audio_patch_handle_t handle); 263 void processConfigEvents_l(); 264 virtual void cacheParameters_l() = 0; 265 virtual status_t createAudioPatch_l(const struct audio_patch *patch, 266 audio_patch_handle_t *handle) = 0; 267 virtual status_t releaseAudioPatch_l(const audio_patch_handle_t handle) = 0; 268 virtual void getAudioPortConfig(struct audio_port_config *config) = 0; 269 270 271 // see note at declaration of mStandby, mOutDevice and mInDevice 272 bool standby() const { return mStandby; } 273 audio_devices_t outDevice() const { return mOutDevice; } 274 audio_devices_t inDevice() const { return mInDevice; } 275 276 virtual audio_stream_t* stream() const = 0; 277 278 sp<EffectHandle> createEffect_l( 279 const sp<AudioFlinger::Client>& client, 280 const sp<IEffectClient>& effectClient, 281 int32_t priority, 282 int sessionId, 283 effect_descriptor_t *desc, 284 int *enabled, 285 status_t *status /*non-NULL*/); 286 287 // return values for hasAudioSession (bit field) 288 enum effect_state { 289 EFFECT_SESSION = 0x1, // the audio session corresponds to at least one 290 // effect 291 TRACK_SESSION = 0x2 // the audio session corresponds to at least one 292 // track 293 }; 294 295 // get effect chain corresponding to session Id. 296 sp<EffectChain> getEffectChain(int sessionId); 297 // same as getEffectChain() but must be called with ThreadBase mutex locked 298 sp<EffectChain> getEffectChain_l(int sessionId) const; 299 // add an effect chain to the chain list (mEffectChains) 300 virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0; 301 // remove an effect chain from the chain list (mEffectChains) 302 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain) = 0; 303 // lock all effect chains Mutexes. Must be called before releasing the 304 // ThreadBase mutex before processing the mixer and effects. This guarantees the 305 // integrity of the chains during the process. 306 // Also sets the parameter 'effectChains' to current value of mEffectChains. 307 void lockEffectChains_l(Vector< sp<EffectChain> >& effectChains); 308 // unlock effect chains after process 309 void unlockEffectChains(const Vector< sp<EffectChain> >& effectChains); 310 // get a copy of mEffectChains vector 311 Vector< sp<EffectChain> > getEffectChains_l() const { return mEffectChains; }; 312 // set audio mode to all effect chains 313 void setMode(audio_mode_t mode); 314 // get effect module with corresponding ID on specified audio session 315 sp<AudioFlinger::EffectModule> getEffect(int sessionId, int effectId); 316 sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId); 317 // add and effect module. Also creates the effect chain is none exists for 318 // the effects audio session 319 status_t addEffect_l(const sp< EffectModule>& effect); 320 // remove and effect module. Also removes the effect chain is this was the last 321 // effect 322 void removeEffect_l(const sp< EffectModule>& effect); 323 // detach all tracks connected to an auxiliary effect 324 virtual void detachAuxEffect_l(int effectId __unused) {} 325 // returns either EFFECT_SESSION if effects on this audio session exist in one 326 // chain, or TRACK_SESSION if tracks on this audio session exist, or both 327 virtual uint32_t hasAudioSession(int sessionId) const = 0; 328 // the value returned by default implementation is not important as the 329 // strategy is only meaningful for PlaybackThread which implements this method 330 virtual uint32_t getStrategyForSession_l(int sessionId __unused) { return 0; } 331 332 // suspend or restore effect according to the type of effect passed. a NULL 333 // type pointer means suspend all effects in the session 334 void setEffectSuspended(const effect_uuid_t *type, 335 bool suspend, 336 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 337 // check if some effects must be suspended/restored when an effect is enabled 338 // or disabled 339 void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect, 340 bool enabled, 341 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 342 void checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect, 343 bool enabled, 344 int sessionId = AUDIO_SESSION_OUTPUT_MIX); 345 346 virtual status_t setSyncEvent(const sp<SyncEvent>& event) = 0; 347 virtual bool isValidSyncEvent(const sp<SyncEvent>& event) const = 0; 348 349 // Return a reference to a per-thread heap which can be used to allocate IMemory 350 // objects that will be read-only to client processes, read/write to mediaserver, 351 // and shared by all client processes of the thread. 352 // The heap is per-thread rather than common across all threads, because 353 // clients can't be trusted not to modify the offset of the IMemory they receive. 354 // If a thread does not have such a heap, this method returns 0. 355 virtual sp<MemoryDealer> readOnlyHeap() const { return 0; } 356 357 virtual sp<IMemory> pipeMemory() const { return 0; } 358 359 mutable Mutex mLock; 360 361 protected: 362 363 // entry describing an effect being suspended in mSuspendedSessions keyed vector 364 class SuspendedSessionDesc : public RefBase { 365 public: 366 SuspendedSessionDesc() : mRefCount(0) {} 367 368 int mRefCount; // number of active suspend requests 369 effect_uuid_t mType; // effect type UUID 370 }; 371 372 void acquireWakeLock(int uid = -1); 373 void acquireWakeLock_l(int uid = -1); 374 void releaseWakeLock(); 375 void releaseWakeLock_l(); 376 void updateWakeLockUids(const SortedVector<int> &uids); 377 void updateWakeLockUids_l(const SortedVector<int> &uids); 378 void getPowerManager_l(); 379 void setEffectSuspended_l(const effect_uuid_t *type, 380 bool suspend, 381 int sessionId); 382 // updated mSuspendedSessions when an effect suspended or restored 383 void updateSuspendedSessions_l(const effect_uuid_t *type, 384 bool suspend, 385 int sessionId); 386 // check if some effects must be suspended when an effect chain is added 387 void checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain); 388 389 String16 getWakeLockTag(); 390 391 virtual void preExit() { } 392 393 friend class AudioFlinger; // for mEffectChains 394 395 const type_t mType; 396 397 // Used by parameters, config events, addTrack_l, exit 398 Condition mWaitWorkCV; 399 400 const sp<AudioFlinger> mAudioFlinger; 401 402 // updated by PlaybackThread::readOutputParameters_l() or 403 // RecordThread::readInputParameters_l() 404 uint32_t mSampleRate; 405 size_t mFrameCount; // output HAL, direct output, record 406 audio_channel_mask_t mChannelMask; 407 uint32_t mChannelCount; 408 size_t mFrameSize; 409 audio_format_t mFormat; // Source format for Recording and 410 // Sink format for Playback. 411 // Sink format may be different than 412 // HAL format if Fastmixer is used. 413 audio_format_t mHALFormat; 414 size_t mBufferSize; // HAL buffer size for read() or write() 415 416 Vector< sp<ConfigEvent> > mConfigEvents; 417 418 // These fields are written and read by thread itself without lock or barrier, 419 // and read by other threads without lock or barrier via standby(), outDevice() 420 // and inDevice(). 421 // Because of the absence of a lock or barrier, any other thread that reads 422 // these fields must use the information in isolation, or be prepared to deal 423 // with possibility that it might be inconsistent with other information. 424 bool mStandby; // Whether thread is currently in standby. 425 audio_devices_t mOutDevice; // output device 426 audio_devices_t mInDevice; // input device 427 audio_source_t mAudioSource; // (see audio.h, audio_source_t) 428 429 const audio_io_handle_t mId; 430 Vector< sp<EffectChain> > mEffectChains; 431 432 static const int kNameLength = 16; // prctl(PR_SET_NAME) limit 433 char mName[kNameLength]; 434 sp<IPowerManager> mPowerManager; 435 sp<IBinder> mWakeLockToken; 436 const sp<PMDeathRecipient> mDeathRecipient; 437 // list of suspended effects per session and per type. The first vector is 438 // keyed by session ID, the second by type UUID timeLow field 439 KeyedVector< int, KeyedVector< int, sp<SuspendedSessionDesc> > > 440 mSuspendedSessions; 441 static const size_t kLogSize = 4 * 1024; 442 sp<NBLog::Writer> mNBLogWriter; 443 }; 444 445 // --- PlaybackThread --- 446 class PlaybackThread : public ThreadBase { 447 public: 448 449 #include "PlaybackTracks.h" 450 451 enum mixer_state { 452 MIXER_IDLE, // no active tracks 453 MIXER_TRACKS_ENABLED, // at least one active track, but no track has any data ready 454 MIXER_TRACKS_READY, // at least one active track, and at least one track has data 455 MIXER_DRAIN_TRACK, // drain currently playing track 456 MIXER_DRAIN_ALL, // fully drain the hardware 457 // standby mode does not have an enum value 458 // suspend by audio policy manager is orthogonal to mixer state 459 }; 460 461 // retry count before removing active track in case of underrun on offloaded thread: 462 // we need to make sure that AudioTrack client has enough time to send large buffers 463 //FIXME may be more appropriate if expressed in time units. Need to revise how underrun is handled 464 // for offloaded tracks 465 static const int8_t kMaxTrackRetriesOffload = 20; 466 467 PlaybackThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, 468 audio_io_handle_t id, audio_devices_t device, type_t type); 469 virtual ~PlaybackThread(); 470 471 void dump(int fd, const Vector<String16>& args); 472 473 // Thread virtuals 474 virtual bool threadLoop(); 475 476 // RefBase 477 virtual void onFirstRef(); 478 479 protected: 480 // Code snippets that were lifted up out of threadLoop() 481 virtual void threadLoop_mix() = 0; 482 virtual void threadLoop_sleepTime() = 0; 483 virtual ssize_t threadLoop_write(); 484 virtual void threadLoop_drain(); 485 virtual void threadLoop_standby(); 486 virtual void threadLoop_exit(); 487 virtual void threadLoop_removeTracks(const Vector< sp<Track> >& tracksToRemove); 488 489 // prepareTracks_l reads and writes mActiveTracks, and returns 490 // the pending set of tracks to remove via Vector 'tracksToRemove'. The caller 491 // is responsible for clearing or destroying this Vector later on, when it 492 // is safe to do so. That will drop the final ref count and destroy the tracks. 493 virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove) = 0; 494 void removeTracks_l(const Vector< sp<Track> >& tracksToRemove); 495 496 void writeCallback(); 497 void resetWriteBlocked(uint32_t sequence); 498 void drainCallback(); 499 void resetDraining(uint32_t sequence); 500 501 static int asyncCallback(stream_callback_event_t event, void *param, void *cookie); 502 503 virtual bool waitingAsyncCallback(); 504 virtual bool waitingAsyncCallback_l(); 505 virtual bool shouldStandby_l(); 506 virtual void onAddNewTrack_l(); 507 508 // ThreadBase virtuals 509 virtual void preExit(); 510 511 public: 512 513 virtual status_t initCheck() const { return (mOutput == NULL) ? NO_INIT : NO_ERROR; } 514 515 // return estimated latency in milliseconds, as reported by HAL 516 uint32_t latency() const; 517 // same, but lock must already be held 518 uint32_t latency_l() const; 519 520 void setMasterVolume(float value); 521 void setMasterMute(bool muted); 522 523 void setStreamVolume(audio_stream_type_t stream, float value); 524 void setStreamMute(audio_stream_type_t stream, bool muted); 525 526 float streamVolume(audio_stream_type_t stream) const; 527 528 sp<Track> createTrack_l( 529 const sp<AudioFlinger::Client>& client, 530 audio_stream_type_t streamType, 531 uint32_t sampleRate, 532 audio_format_t format, 533 audio_channel_mask_t channelMask, 534 size_t *pFrameCount, 535 const sp<IMemory>& sharedBuffer, 536 int sessionId, 537 IAudioFlinger::track_flags_t *flags, 538 pid_t tid, 539 int uid, 540 status_t *status /*non-NULL*/); 541 542 AudioStreamOut* getOutput() const; 543 AudioStreamOut* clearOutput(); 544 virtual audio_stream_t* stream() const; 545 546 // a very large number of suspend() will eventually wraparound, but unlikely 547 void suspend() { (void) android_atomic_inc(&mSuspended); } 548 void restore() 549 { 550 // if restore() is done without suspend(), get back into 551 // range so that the next suspend() will operate correctly 552 if (android_atomic_dec(&mSuspended) <= 0) { 553 android_atomic_release_store(0, &mSuspended); 554 } 555 } 556 bool isSuspended() const 557 { return android_atomic_acquire_load(&mSuspended) > 0; } 558 559 virtual String8 getParameters(const String8& keys); 560 virtual void audioConfigChanged(int event, int param = 0); 561 status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames); 562 // FIXME rename mixBuffer() to sinkBuffer() and remove int16_t* dependency. 563 // Consider also removing and passing an explicit mMainBuffer initialization 564 // parameter to AF::PlaybackThread::Track::Track(). 565 int16_t *mixBuffer() const { 566 return reinterpret_cast<int16_t *>(mSinkBuffer); }; 567 568 virtual void detachAuxEffect_l(int effectId); 569 status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track, 570 int EffectId); 571 status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track, 572 int EffectId); 573 574 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 575 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 576 virtual uint32_t hasAudioSession(int sessionId) const; 577 virtual uint32_t getStrategyForSession_l(int sessionId); 578 579 580 virtual status_t setSyncEvent(const sp<SyncEvent>& event); 581 virtual bool isValidSyncEvent(const sp<SyncEvent>& event) const; 582 583 // called with AudioFlinger lock held 584 void invalidateTracks(audio_stream_type_t streamType); 585 586 virtual size_t frameCount() const { return mNormalFrameCount; } 587 588 // Return's the HAL's frame count i.e. fast mixer buffer size. 589 size_t frameCountHAL() const { return mFrameCount; } 590 591 status_t getTimestamp_l(AudioTimestamp& timestamp); 592 593 void addPatchTrack(const sp<PatchTrack>& track); 594 void deletePatchTrack(const sp<PatchTrack>& track); 595 596 virtual void getAudioPortConfig(struct audio_port_config *config); 597 598 protected: 599 // updated by readOutputParameters_l() 600 size_t mNormalFrameCount; // normal mixer and effects 601 602 void* mSinkBuffer; // frame size aligned sink buffer 603 604 // TODO: 605 // Rearrange the buffer info into a struct/class with 606 // clear, copy, construction, destruction methods. 607 // 608 // mSinkBuffer also has associated with it: 609 // 610 // mSinkBufferSize: Sink Buffer Size 611 // mFormat: Sink Buffer Format 612 613 // Mixer Buffer (mMixerBuffer*) 614 // 615 // In the case of floating point or multichannel data, which is not in the 616 // sink format, it is required to accumulate in a higher precision or greater channel count 617 // buffer before downmixing or data conversion to the sink buffer. 618 619 // Set to "true" to enable the Mixer Buffer otherwise mixer output goes to sink buffer. 620 bool mMixerBufferEnabled; 621 622 // Storage, 32 byte aligned (may make this alignment a requirement later). 623 // Due to constraints on mNormalFrameCount, the buffer size is a multiple of 16 frames. 624 void* mMixerBuffer; 625 626 // Size of mMixerBuffer in bytes: mNormalFrameCount * #channels * sampsize. 627 size_t mMixerBufferSize; 628 629 // The audio format of mMixerBuffer. Set to AUDIO_FORMAT_PCM_(FLOAT|16_BIT) only. 630 audio_format_t mMixerBufferFormat; 631 632 // An internal flag set to true by MixerThread::prepareTracks_l() 633 // when mMixerBuffer contains valid data after mixing. 634 bool mMixerBufferValid; 635 636 // Effects Buffer (mEffectsBuffer*) 637 // 638 // In the case of effects data, which is not in the sink format, 639 // it is required to accumulate in a different buffer before data conversion 640 // to the sink buffer. 641 642 // Set to "true" to enable the Effects Buffer otherwise effects output goes to sink buffer. 643 bool mEffectBufferEnabled; 644 645 // Storage, 32 byte aligned (may make this alignment a requirement later). 646 // Due to constraints on mNormalFrameCount, the buffer size is a multiple of 16 frames. 647 void* mEffectBuffer; 648 649 // Size of mEffectsBuffer in bytes: mNormalFrameCount * #channels * sampsize. 650 size_t mEffectBufferSize; 651 652 // The audio format of mEffectsBuffer. Set to AUDIO_FORMAT_PCM_16_BIT only. 653 audio_format_t mEffectBufferFormat; 654 655 // An internal flag set to true by MixerThread::prepareTracks_l() 656 // when mEffectsBuffer contains valid data after mixing. 657 // 658 // When this is set, all mixer data is routed into the effects buffer 659 // for any processing (including output processing). 660 bool mEffectBufferValid; 661 662 // suspend count, > 0 means suspended. While suspended, the thread continues to pull from 663 // tracks and mix, but doesn't write to HAL. A2DP and SCO HAL implementations can't handle 664 // concurrent use of both of them, so Audio Policy Service suspends one of the threads to 665 // workaround that restriction. 666 // 'volatile' means accessed via atomic operations and no lock. 667 volatile int32_t mSuspended; 668 669 // FIXME overflows every 6+ hours at 44.1 kHz stereo 16-bit samples 670 // mFramesWritten would be better, or 64-bit even better 671 size_t mBytesWritten; 672 private: 673 // mMasterMute is in both PlaybackThread and in AudioFlinger. When a 674 // PlaybackThread needs to find out if master-muted, it checks it's local 675 // copy rather than the one in AudioFlinger. This optimization saves a lock. 676 bool mMasterMute; 677 void setMasterMute_l(bool muted) { mMasterMute = muted; } 678 protected: 679 SortedVector< wp<Track> > mActiveTracks; // FIXME check if this could be sp<> 680 SortedVector<int> mWakeLockUids; 681 int mActiveTracksGeneration; 682 wp<Track> mLatestActiveTrack; // latest track added to mActiveTracks 683 684 // Allocate a track name for a given channel mask. 685 // Returns name >= 0 if successful, -1 on failure. 686 virtual int getTrackName_l(audio_channel_mask_t channelMask, 687 audio_format_t format, int sessionId) = 0; 688 virtual void deleteTrackName_l(int name) = 0; 689 690 // Time to sleep between cycles when: 691 virtual uint32_t activeSleepTimeUs() const; // mixer state MIXER_TRACKS_ENABLED 692 virtual uint32_t idleSleepTimeUs() const = 0; // mixer state MIXER_IDLE 693 virtual uint32_t suspendSleepTimeUs() const = 0; // audio policy manager suspended us 694 // No sleep when mixer state == MIXER_TRACKS_READY; relies on audio HAL stream->write() 695 // No sleep in standby mode; waits on a condition 696 697 // Code snippets that are temporarily lifted up out of threadLoop() until the merge 698 void checkSilentMode_l(); 699 700 // Non-trivial for DUPLICATING only 701 virtual void saveOutputTracks() { } 702 virtual void clearOutputTracks() { } 703 704 // Cache various calculated values, at threadLoop() entry and after a parameter change 705 virtual void cacheParameters_l(); 706 707 virtual uint32_t correctLatency_l(uint32_t latency) const; 708 709 virtual status_t createAudioPatch_l(const struct audio_patch *patch, 710 audio_patch_handle_t *handle); 711 virtual status_t releaseAudioPatch_l(const audio_patch_handle_t handle); 712 713 bool usesHwAvSync() const { return (mType == DIRECT) && (mOutput != NULL) && 714 (mOutput->flags & AUDIO_OUTPUT_FLAG_HW_AV_SYNC); } 715 716 private: 717 718 friend class AudioFlinger; // for numerous 719 720 PlaybackThread& operator = (const PlaybackThread&); 721 722 status_t addTrack_l(const sp<Track>& track); 723 bool destroyTrack_l(const sp<Track>& track); 724 void removeTrack_l(const sp<Track>& track); 725 void broadcast_l(); 726 727 void readOutputParameters_l(); 728 729 virtual void dumpInternals(int fd, const Vector<String16>& args); 730 void dumpTracks(int fd, const Vector<String16>& args); 731 732 SortedVector< sp<Track> > mTracks; 733 stream_type_t mStreamTypes[AUDIO_STREAM_CNT]; 734 AudioStreamOut *mOutput; 735 736 float mMasterVolume; 737 nsecs_t mLastWriteTime; 738 int mNumWrites; 739 int mNumDelayedWrites; 740 bool mInWrite; 741 742 // FIXME rename these former local variables of threadLoop to standard "m" names 743 nsecs_t standbyTime; 744 size_t mSinkBufferSize; 745 746 // cached copies of activeSleepTimeUs() and idleSleepTimeUs() made by cacheParameters_l() 747 uint32_t activeSleepTime; 748 uint32_t idleSleepTime; 749 750 uint32_t sleepTime; 751 752 // mixer status returned by prepareTracks_l() 753 mixer_state mMixerStatus; // current cycle 754 // previous cycle when in prepareTracks_l() 755 mixer_state mMixerStatusIgnoringFastTracks; 756 // FIXME or a separate ready state per track 757 758 // FIXME move these declarations into the specific sub-class that needs them 759 // MIXER only 760 uint32_t sleepTimeShift; 761 762 // same as AudioFlinger::mStandbyTimeInNsecs except for DIRECT which uses a shorter value 763 nsecs_t standbyDelay; 764 765 // MIXER only 766 nsecs_t maxPeriod; 767 768 // DUPLICATING only 769 uint32_t writeFrames; 770 771 size_t mBytesRemaining; 772 size_t mCurrentWriteLength; 773 bool mUseAsyncWrite; 774 // mWriteAckSequence contains current write sequence on bits 31-1. The write sequence is 775 // incremented each time a write(), a flush() or a standby() occurs. 776 // Bit 0 is set when a write blocks and indicates a callback is expected. 777 // Bit 0 is reset by the async callback thread calling resetWriteBlocked(). Out of sequence 778 // callbacks are ignored. 779 uint32_t mWriteAckSequence; 780 // mDrainSequence contains current drain sequence on bits 31-1. The drain sequence is 781 // incremented each time a drain is requested or a flush() or standby() occurs. 782 // Bit 0 is set when the drain() command is called at the HAL and indicates a callback is 783 // expected. 784 // Bit 0 is reset by the async callback thread calling resetDraining(). Out of sequence 785 // callbacks are ignored. 786 uint32_t mDrainSequence; 787 // A condition that must be evaluated by prepareTrack_l() has changed and we must not wait 788 // for async write callback in the thread loop before evaluating it 789 bool mSignalPending; 790 sp<AsyncCallbackThread> mCallbackThread; 791 792 private: 793 // The HAL output sink is treated as non-blocking, but current implementation is blocking 794 sp<NBAIO_Sink> mOutputSink; 795 // If a fast mixer is present, the blocking pipe sink, otherwise clear 796 sp<NBAIO_Sink> mPipeSink; 797 // The current sink for the normal mixer to write it's (sub)mix, mOutputSink or mPipeSink 798 sp<NBAIO_Sink> mNormalSink; 799 #ifdef TEE_SINK 800 // For dumpsys 801 sp<NBAIO_Sink> mTeeSink; 802 sp<NBAIO_Source> mTeeSource; 803 #endif 804 uint32_t mScreenState; // cached copy of gScreenState 805 static const size_t kFastMixerLogSize = 4 * 1024; 806 sp<NBLog::Writer> mFastMixerNBLogWriter; 807 public: 808 virtual bool hasFastMixer() const = 0; 809 virtual FastTrackUnderruns getFastTrackUnderruns(size_t fastIndex __unused) const 810 { FastTrackUnderruns dummy; return dummy; } 811 812 protected: 813 // accessed by both binder threads and within threadLoop(), lock on mutex needed 814 unsigned mFastTrackAvailMask; // bit i set if fast track [i] is available 815 bool mHwSupportsPause; 816 bool mHwPaused; 817 bool mFlushPending; 818 private: 819 // timestamp latch: 820 // D input is written by threadLoop_write while mutex is unlocked, and read while locked 821 // Q output is written while locked, and read while locked 822 struct { 823 AudioTimestamp mTimestamp; 824 uint32_t mUnpresentedFrames; 825 KeyedVector<Track *, uint32_t> mFramesReleased; 826 } mLatchD, mLatchQ; 827 bool mLatchDValid; // true means mLatchD is valid 828 // (except for mFramesReleased which is filled in later), 829 // and clock it into latch at next opportunity 830 bool mLatchQValid; // true means mLatchQ is valid 831 }; 832 833 class MixerThread : public PlaybackThread { 834 public: 835 MixerThread(const sp<AudioFlinger>& audioFlinger, 836 AudioStreamOut* output, 837 audio_io_handle_t id, 838 audio_devices_t device, 839 type_t type = MIXER); 840 virtual ~MixerThread(); 841 842 // Thread virtuals 843 844 virtual bool checkForNewParameter_l(const String8& keyValuePair, 845 status_t& status); 846 virtual void dumpInternals(int fd, const Vector<String16>& args); 847 848 protected: 849 virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove); 850 virtual int getTrackName_l(audio_channel_mask_t channelMask, 851 audio_format_t format, int sessionId); 852 virtual void deleteTrackName_l(int name); 853 virtual uint32_t idleSleepTimeUs() const; 854 virtual uint32_t suspendSleepTimeUs() const; 855 virtual void cacheParameters_l(); 856 857 // threadLoop snippets 858 virtual ssize_t threadLoop_write(); 859 virtual void threadLoop_standby(); 860 virtual void threadLoop_mix(); 861 virtual void threadLoop_sleepTime(); 862 virtual void threadLoop_removeTracks(const Vector< sp<Track> >& tracksToRemove); 863 virtual uint32_t correctLatency_l(uint32_t latency) const; 864 865 AudioMixer* mAudioMixer; // normal mixer 866 private: 867 // one-time initialization, no locks required 868 sp<FastMixer> mFastMixer; // non-0 if there is also a fast mixer 869 sp<AudioWatchdog> mAudioWatchdog; // non-0 if there is an audio watchdog thread 870 871 // contents are not guaranteed to be consistent, no locks required 872 FastMixerDumpState mFastMixerDumpState; 873 #ifdef STATE_QUEUE_DUMP 874 StateQueueObserverDump mStateQueueObserverDump; 875 StateQueueMutatorDump mStateQueueMutatorDump; 876 #endif 877 AudioWatchdogDump mAudioWatchdogDump; 878 879 // accessible only within the threadLoop(), no locks required 880 // mFastMixer->sq() // for mutating and pushing state 881 int32_t mFastMixerFutex; // for cold idle 882 883 public: 884 virtual bool hasFastMixer() const { return mFastMixer != 0; } 885 virtual FastTrackUnderruns getFastTrackUnderruns(size_t fastIndex) const { 886 ALOG_ASSERT(fastIndex < FastMixerState::kMaxFastTracks); 887 return mFastMixerDumpState.mTracks[fastIndex].mUnderruns; 888 } 889 890 }; 891 892 class DirectOutputThread : public PlaybackThread { 893 public: 894 895 DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, 896 audio_io_handle_t id, audio_devices_t device); 897 virtual ~DirectOutputThread(); 898 899 // Thread virtuals 900 901 virtual bool checkForNewParameter_l(const String8& keyValuePair, 902 status_t& status); 903 virtual void flushHw_l(); 904 905 protected: 906 virtual int getTrackName_l(audio_channel_mask_t channelMask, 907 audio_format_t format, int sessionId); 908 virtual void deleteTrackName_l(int name); 909 virtual uint32_t activeSleepTimeUs() const; 910 virtual uint32_t idleSleepTimeUs() const; 911 virtual uint32_t suspendSleepTimeUs() const; 912 virtual void cacheParameters_l(); 913 914 // threadLoop snippets 915 virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove); 916 virtual void threadLoop_mix(); 917 virtual void threadLoop_sleepTime(); 918 virtual void threadLoop_exit(); 919 virtual bool shouldStandby_l(); 920 921 // volumes last sent to audio HAL with stream->set_volume() 922 float mLeftVolFloat; 923 float mRightVolFloat; 924 925 DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, 926 audio_io_handle_t id, uint32_t device, ThreadBase::type_t type); 927 void processVolume_l(Track *track, bool lastTrack); 928 929 // prepareTracks_l() tells threadLoop_mix() the name of the single active track 930 sp<Track> mActiveTrack; 931 public: 932 virtual bool hasFastMixer() const { return false; } 933 }; 934 935 class OffloadThread : public DirectOutputThread { 936 public: 937 938 OffloadThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, 939 audio_io_handle_t id, uint32_t device); 940 virtual ~OffloadThread() {}; 941 virtual void flushHw_l(); 942 943 protected: 944 // threadLoop snippets 945 virtual mixer_state prepareTracks_l(Vector< sp<Track> > *tracksToRemove); 946 virtual void threadLoop_exit(); 947 948 virtual bool waitingAsyncCallback(); 949 virtual bool waitingAsyncCallback_l(); 950 virtual void onAddNewTrack_l(); 951 952 private: 953 size_t mPausedWriteLength; // length in bytes of write interrupted by pause 954 size_t mPausedBytesRemaining; // bytes still waiting in mixbuffer after resume 955 wp<Track> mPreviousTrack; // used to detect track switch 956 }; 957 958 class AsyncCallbackThread : public Thread { 959 public: 960 961 AsyncCallbackThread(const wp<PlaybackThread>& playbackThread); 962 963 virtual ~AsyncCallbackThread(); 964 965 // Thread virtuals 966 virtual bool threadLoop(); 967 968 // RefBase 969 virtual void onFirstRef(); 970 971 void exit(); 972 void setWriteBlocked(uint32_t sequence); 973 void resetWriteBlocked(); 974 void setDraining(uint32_t sequence); 975 void resetDraining(); 976 977 private: 978 const wp<PlaybackThread> mPlaybackThread; 979 // mWriteAckSequence corresponds to the last write sequence passed by the offload thread via 980 // setWriteBlocked(). The sequence is shifted one bit to the left and the lsb is used 981 // to indicate that the callback has been received via resetWriteBlocked() 982 uint32_t mWriteAckSequence; 983 // mDrainSequence corresponds to the last drain sequence passed by the offload thread via 984 // setDraining(). The sequence is shifted one bit to the left and the lsb is used 985 // to indicate that the callback has been received via resetDraining() 986 uint32_t mDrainSequence; 987 Condition mWaitWorkCV; 988 Mutex mLock; 989 }; 990 991 class DuplicatingThread : public MixerThread { 992 public: 993 DuplicatingThread(const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread, 994 audio_io_handle_t id); 995 virtual ~DuplicatingThread(); 996 997 // Thread virtuals 998 void addOutputTrack(MixerThread* thread); 999 void removeOutputTrack(MixerThread* thread); 1000 uint32_t waitTimeMs() const { return mWaitTimeMs; } 1001 protected: 1002 virtual uint32_t activeSleepTimeUs() const; 1003 1004 private: 1005 bool outputsReady(const SortedVector< sp<OutputTrack> > &outputTracks); 1006 protected: 1007 // threadLoop snippets 1008 virtual void threadLoop_mix(); 1009 virtual void threadLoop_sleepTime(); 1010 virtual ssize_t threadLoop_write(); 1011 virtual void threadLoop_standby(); 1012 virtual void cacheParameters_l(); 1013 1014 private: 1015 // called from threadLoop, addOutputTrack, removeOutputTrack 1016 virtual void updateWaitTime_l(); 1017 protected: 1018 virtual void saveOutputTracks(); 1019 virtual void clearOutputTracks(); 1020 private: 1021 1022 uint32_t mWaitTimeMs; 1023 SortedVector < sp<OutputTrack> > outputTracks; 1024 SortedVector < sp<OutputTrack> > mOutputTracks; 1025 public: 1026 virtual bool hasFastMixer() const { return false; } 1027 }; 1028 1029 1030 // record thread 1031 class RecordThread : public ThreadBase 1032 { 1033 public: 1034 1035 class RecordTrack; 1036 class ResamplerBufferProvider : public AudioBufferProvider 1037 // derives from AudioBufferProvider interface for use by resampler 1038 { 1039 public: 1040 ResamplerBufferProvider(RecordTrack* recordTrack) : mRecordTrack(recordTrack) { } 1041 virtual ~ResamplerBufferProvider() { } 1042 // AudioBufferProvider interface 1043 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts); 1044 virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer); 1045 private: 1046 RecordTrack * const mRecordTrack; 1047 }; 1048 1049 #include "RecordTracks.h" 1050 1051 RecordThread(const sp<AudioFlinger>& audioFlinger, 1052 AudioStreamIn *input, 1053 audio_io_handle_t id, 1054 audio_devices_t outDevice, 1055 audio_devices_t inDevice 1056 #ifdef TEE_SINK 1057 , const sp<NBAIO_Sink>& teeSink 1058 #endif 1059 ); 1060 virtual ~RecordThread(); 1061 1062 // no addTrack_l ? 1063 void destroyTrack_l(const sp<RecordTrack>& track); 1064 void removeTrack_l(const sp<RecordTrack>& track); 1065 1066 void dumpInternals(int fd, const Vector<String16>& args); 1067 void dumpTracks(int fd, const Vector<String16>& args); 1068 1069 // Thread virtuals 1070 virtual bool threadLoop(); 1071 1072 // RefBase 1073 virtual void onFirstRef(); 1074 1075 virtual status_t initCheck() const { return (mInput == NULL) ? NO_INIT : NO_ERROR; } 1076 1077 virtual sp<MemoryDealer> readOnlyHeap() const { return mReadOnlyHeap; } 1078 1079 virtual sp<IMemory> pipeMemory() const { return mPipeMemory; } 1080 1081 sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l( 1082 const sp<AudioFlinger::Client>& client, 1083 uint32_t sampleRate, 1084 audio_format_t format, 1085 audio_channel_mask_t channelMask, 1086 size_t *pFrameCount, 1087 int sessionId, 1088 size_t *notificationFrames, 1089 int uid, 1090 IAudioFlinger::track_flags_t *flags, 1091 pid_t tid, 1092 status_t *status /*non-NULL*/); 1093 1094 status_t start(RecordTrack* recordTrack, 1095 AudioSystem::sync_event_t event, 1096 int triggerSession); 1097 1098 // ask the thread to stop the specified track, and 1099 // return true if the caller should then do it's part of the stopping process 1100 bool stop(RecordTrack* recordTrack); 1101 1102 void dump(int fd, const Vector<String16>& args); 1103 AudioStreamIn* clearInput(); 1104 virtual audio_stream_t* stream() const; 1105 1106 1107 virtual bool checkForNewParameter_l(const String8& keyValuePair, 1108 status_t& status); 1109 virtual void cacheParameters_l() {} 1110 virtual String8 getParameters(const String8& keys); 1111 virtual void audioConfigChanged(int event, int param = 0); 1112 virtual status_t createAudioPatch_l(const struct audio_patch *patch, 1113 audio_patch_handle_t *handle); 1114 virtual status_t releaseAudioPatch_l(const audio_patch_handle_t handle); 1115 1116 void addPatchRecord(const sp<PatchRecord>& record); 1117 void deletePatchRecord(const sp<PatchRecord>& record); 1118 1119 void readInputParameters_l(); 1120 virtual uint32_t getInputFramesLost(); 1121 1122 virtual status_t addEffectChain_l(const sp<EffectChain>& chain); 1123 virtual size_t removeEffectChain_l(const sp<EffectChain>& chain); 1124 virtual uint32_t hasAudioSession(int sessionId) const; 1125 1126 // Return the set of unique session IDs across all tracks. 1127 // The keys are the session IDs, and the associated values are meaningless. 1128 // FIXME replace by Set [and implement Bag/Multiset for other uses]. 1129 KeyedVector<int, bool> sessionIds() const; 1130 1131 virtual status_t setSyncEvent(const sp<SyncEvent>& event); 1132 virtual bool isValidSyncEvent(const sp<SyncEvent>& event) const; 1133 1134 static void syncStartEventCallback(const wp<SyncEvent>& event); 1135 1136 virtual size_t frameCount() const { return mFrameCount; } 1137 bool hasFastCapture() const { return mFastCapture != 0; } 1138 virtual void getAudioPortConfig(struct audio_port_config *config); 1139 1140 private: 1141 // Enter standby if not already in standby, and set mStandby flag 1142 void standbyIfNotAlreadyInStandby(); 1143 1144 // Call the HAL standby method unconditionally, and don't change mStandby flag 1145 void inputStandBy(); 1146 1147 AudioStreamIn *mInput; 1148 SortedVector < sp<RecordTrack> > mTracks; 1149 // mActiveTracks has dual roles: it indicates the current active track(s), and 1150 // is used together with mStartStopCond to indicate start()/stop() progress 1151 SortedVector< sp<RecordTrack> > mActiveTracks; 1152 // generation counter for mActiveTracks 1153 int mActiveTracksGen; 1154 Condition mStartStopCond; 1155 1156 // resampler converts input at HAL Hz to output at AudioRecord client Hz 1157 int16_t *mRsmpInBuffer; // see new[] for details on the size 1158 size_t mRsmpInFrames; // size of resampler input in frames 1159 size_t mRsmpInFramesP2;// size rounded up to a power-of-2 1160 1161 // rolling index that is never cleared 1162 int32_t mRsmpInRear; // last filled frame + 1 1163 1164 // For dumpsys 1165 const sp<NBAIO_Sink> mTeeSink; 1166 1167 const sp<MemoryDealer> mReadOnlyHeap; 1168 1169 // one-time initialization, no locks required 1170 sp<FastCapture> mFastCapture; // non-0 if there is also a fast capture 1171 // FIXME audio watchdog thread 1172 1173 // contents are not guaranteed to be consistent, no locks required 1174 FastCaptureDumpState mFastCaptureDumpState; 1175 #ifdef STATE_QUEUE_DUMP 1176 // FIXME StateQueue observer and mutator dump fields 1177 #endif 1178 // FIXME audio watchdog dump 1179 1180 // accessible only within the threadLoop(), no locks required 1181 // mFastCapture->sq() // for mutating and pushing state 1182 int32_t mFastCaptureFutex; // for cold idle 1183 1184 // The HAL input source is treated as non-blocking, 1185 // but current implementation is blocking 1186 sp<NBAIO_Source> mInputSource; 1187 // The source for the normal capture thread to read from: mInputSource or mPipeSource 1188 sp<NBAIO_Source> mNormalSource; 1189 // If a fast capture is present, the non-blocking pipe sink written to by fast capture, 1190 // otherwise clear 1191 sp<NBAIO_Sink> mPipeSink; 1192 // If a fast capture is present, the non-blocking pipe source read by normal thread, 1193 // otherwise clear 1194 sp<NBAIO_Source> mPipeSource; 1195 // Depth of pipe from fast capture to normal thread and fast clients, always power of 2 1196 size_t mPipeFramesP2; 1197 // If a fast capture is present, the Pipe as IMemory, otherwise clear 1198 sp<IMemory> mPipeMemory; 1199 1200 static const size_t kFastCaptureLogSize = 4 * 1024; 1201 sp<NBLog::Writer> mFastCaptureNBLogWriter; 1202 1203 bool mFastTrackAvail; // true if fast track available 1204 }; 1205
