SurfaceFlinger.h revision c93afd54a05497c4ae42db99ea0310ee69cca492
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef ANDROID_SURFACE_FLINGER_H 18#define ANDROID_SURFACE_FLINGER_H 19 20#include <memory> 21#include <stdint.h> 22#include <sys/types.h> 23 24#include <EGL/egl.h> 25 26/* 27 * NOTE: Make sure this file doesn't include anything from <gl/ > or <gl2/ > 28 */ 29 30#include <cutils/compiler.h> 31 32#include <utils/Atomic.h> 33#include <utils/Errors.h> 34#include <utils/KeyedVector.h> 35#include <utils/RefBase.h> 36#include <utils/SortedVector.h> 37#include <utils/threads.h> 38 39#include <ui/FenceTime.h> 40#include <ui/PixelFormat.h> 41#include <math/mat4.h> 42 43#include <gui/FrameTimestamps.h> 44#include <gui/ISurfaceComposer.h> 45#include <gui/ISurfaceComposerClient.h> 46#include <gui/OccupancyTracker.h> 47 48#include <hardware/hwcomposer_defs.h> 49 50#include <system/graphics.h> 51 52#include <private/gui/LayerState.h> 53 54#include "Barrier.h" 55#include "DisplayDevice.h" 56#include "DispSync.h" 57#include "FrameTracker.h" 58#include "LayerVector.h" 59#include "MessageQueue.h" 60#include "SurfaceInterceptor.h" 61#include "StartBootAnimThread.h" 62 63#include "DisplayHardware/HWComposer.h" 64#include "Effects/Daltonizer.h" 65 66#include <map> 67#include <mutex> 68#include <queue> 69#include <string> 70#include <utility> 71 72namespace android { 73 74// --------------------------------------------------------------------------- 75 76class Client; 77class DisplayEventConnection; 78class EventThread; 79class Layer; 80class LayerDim; 81class Surface; 82class RenderEngine; 83class EventControlThread; 84class VSyncSource; 85class InjectVSyncSource; 86class VrStateCallbacks; 87 88namespace dvr { 89class VrFlinger; 90} // namespace dvr 91 92// --------------------------------------------------------------------------- 93 94enum { 95 eTransactionNeeded = 0x01, 96 eTraversalNeeded = 0x02, 97 eDisplayTransactionNeeded = 0x04, 98 eTransactionMask = 0x07 99}; 100 101class SurfaceFlinger : public BnSurfaceComposer, 102 private IBinder::DeathRecipient, 103 private HWComposer::EventHandler 104{ 105public: 106 107 108 // This is the phase offset in nanoseconds of the software vsync event 109 // relative to the vsync event reported by HWComposer. The software vsync 110 // event is when SurfaceFlinger and Choreographer-based applications run each 111 // frame. 112 // 113 // This phase offset allows adjustment of the minimum latency from application 114 // wake-up time (by Choreographer) to the time at which the resulting window 115 // image is displayed. This value may be either positive (after the HW vsync) 116 // or negative (before the HW vsync). Setting it to 0 will result in a lower 117 // latency bound of two vsync periods because the app and SurfaceFlinger 118 // will run just after the HW vsync. Setting it to a positive number will 119 // result in the minimum latency being: 120 // 121 // (2 * VSYNC_PERIOD - (vsyncPhaseOffsetNs % VSYNC_PERIOD)) 122 // 123 // Note that reducing this latency makes it more likely for the applications 124 // to not have their window content image ready in time. When this happens 125 // the latency will end up being an additional vsync period, and animations 126 // will hiccup. Therefore, this latency should be tuned somewhat 127 // conservatively (or at least with awareness of the trade-off being made). 128 static int64_t vsyncPhaseOffsetNs; 129 static int64_t sfVsyncPhaseOffsetNs; 130 131 // Instruct the Render Engine to use EGL_IMG_context_priority is available. 132 static bool useContextPriority; 133 134 static char const* getServiceName() ANDROID_API { 135 return "SurfaceFlinger"; 136 } 137 138 SurfaceFlinger() ANDROID_API; 139 140 // must be called before clients can connect 141 void init() ANDROID_API; 142 143 // starts SurfaceFlinger main loop in the current thread 144 void run() ANDROID_API; 145 146 enum { 147 EVENT_VSYNC = HWC_EVENT_VSYNC 148 }; 149 150 // post an asynchronous message to the main thread 151 status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0); 152 153 // post a synchronous message to the main thread 154 status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0); 155 156 // force full composition on all displays 157 void repaintEverything(); 158 159 // returns the default Display 160 sp<const DisplayDevice> getDefaultDisplayDevice() const { 161 return getDisplayDevice(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]); 162 } 163 164 // utility function to delete a texture on the main thread 165 void deleteTextureAsync(uint32_t texture); 166 167 // enable/disable h/w composer event 168 // TODO: this should be made accessible only to EventThread 169#ifdef USE_HWC2 170 void setVsyncEnabled(int disp, int enabled); 171#else 172 void eventControl(int disp, int event, int enabled); 173#endif 174 175 // called on the main thread by MessageQueue when an internal message 176 // is received 177 // TODO: this should be made accessible only to MessageQueue 178 void onMessageReceived(int32_t what); 179 180 // for debugging only 181 // TODO: this should be made accessible only to HWComposer 182 const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id); 183 184 RenderEngine& getRenderEngine() const { 185 return *mRenderEngine; 186 } 187 188 bool authenticateSurfaceTextureLocked( 189 const sp<IGraphicBufferProducer>& bufferProducer) const; 190 191private: 192 friend class Client; 193 friend class DisplayEventConnection; 194 friend class EventThread; 195 friend class Layer; 196 friend class MonitoredProducer; 197 friend class VrStateCallbacks; 198 199 // This value is specified in number of frames. Log frame stats at most 200 // every half hour. 201 enum { LOG_FRAME_STATS_PERIOD = 30*60*60 }; 202 203 static const size_t MAX_LAYERS = 4096; 204 205 // We're reference counted, never destroy SurfaceFlinger directly 206 virtual ~SurfaceFlinger(); 207 208 /* ------------------------------------------------------------------------ 209 * Internal data structures 210 */ 211 212 class State { 213 public: 214 LayerVector layersSortedByZ; 215 DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays; 216 217 void traverseInZOrder(const std::function<void(Layer*)>& consume) const; 218 void traverseInReverseZOrder(const std::function<void(Layer*)>& consume) const; 219 }; 220 221 /* ------------------------------------------------------------------------ 222 * IBinder interface 223 */ 224 virtual status_t onTransact(uint32_t code, const Parcel& data, 225 Parcel* reply, uint32_t flags); 226 virtual status_t dump(int fd, const Vector<String16>& args); 227 228 /* ------------------------------------------------------------------------ 229 * ISurfaceComposer interface 230 */ 231 virtual sp<ISurfaceComposerClient> createConnection(); 232 virtual sp<ISurfaceComposerClient> createScopedConnection(const sp<IGraphicBufferProducer>& gbp); 233 virtual sp<IBinder> createDisplay(const String8& displayName, bool secure); 234 virtual void destroyDisplay(const sp<IBinder>& display); 235 virtual sp<IBinder> getBuiltInDisplay(int32_t id); 236 virtual void setTransactionState(const Vector<ComposerState>& state, 237 const Vector<DisplayState>& displays, uint32_t flags); 238 virtual void bootFinished(); 239 virtual bool authenticateSurfaceTexture( 240 const sp<IGraphicBufferProducer>& bufferProducer) const; 241 virtual status_t getSupportedFrameTimestamps( 242 std::vector<FrameEvent>* outSupported) const; 243 virtual sp<IDisplayEventConnection> createDisplayEventConnection(); 244 virtual status_t captureScreen(const sp<IBinder>& display, 245 const sp<IGraphicBufferProducer>& producer, 246 Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight, 247 int32_t minLayerZ, int32_t maxLayerZ, 248 bool useIdentityTransform, ISurfaceComposer::Rotation rotation); 249 virtual status_t getDisplayStats(const sp<IBinder>& display, 250 DisplayStatInfo* stats); 251 virtual status_t getDisplayConfigs(const sp<IBinder>& display, 252 Vector<DisplayInfo>* configs); 253 virtual int getActiveConfig(const sp<IBinder>& display); 254 virtual status_t getDisplayColorModes(const sp<IBinder>& display, 255 Vector<android_color_mode_t>* configs); 256 virtual android_color_mode_t getActiveColorMode(const sp<IBinder>& display); 257 virtual status_t setActiveColorMode(const sp<IBinder>& display, android_color_mode_t colorMode); 258 virtual void setPowerMode(const sp<IBinder>& display, int mode); 259 virtual status_t setActiveConfig(const sp<IBinder>& display, int id); 260 virtual status_t clearAnimationFrameStats(); 261 virtual status_t getAnimationFrameStats(FrameStats* outStats) const; 262 virtual status_t getHdrCapabilities(const sp<IBinder>& display, 263 HdrCapabilities* outCapabilities) const; 264 virtual status_t enableVSyncInjections(bool enable); 265 virtual status_t injectVSync(nsecs_t when); 266 267 268 /* ------------------------------------------------------------------------ 269 * DeathRecipient interface 270 */ 271 virtual void binderDied(const wp<IBinder>& who); 272 273 /* ------------------------------------------------------------------------ 274 * RefBase interface 275 */ 276 virtual void onFirstRef(); 277 278 /* ------------------------------------------------------------------------ 279 * HWComposer::EventHandler interface 280 */ 281 virtual void onVSyncReceived(HWComposer* composer, int type, nsecs_t timestamp); 282 virtual void onHotplugReceived(int disp, bool connected); 283 virtual void onInvalidateReceived(HWComposer* composer); 284 285 /* ------------------------------------------------------------------------ 286 * Message handling 287 */ 288 void waitForEvent(); 289 void signalTransaction(); 290 void signalLayerUpdate(); 291 void signalRefresh(); 292 293 // called on the main thread in response to initializeDisplays() 294 void onInitializeDisplays(); 295 // called on the main thread in response to setActiveConfig() 296 void setActiveConfigInternal(const sp<DisplayDevice>& hw, int mode); 297 // called on the main thread in response to setPowerMode() 298 void setPowerModeInternal(const sp<DisplayDevice>& hw, int mode); 299 300 // Called on the main thread in response to setActiveColorMode() 301 void setActiveColorModeInternal(const sp<DisplayDevice>& hw, android_color_mode_t colorMode); 302 303 // Returns whether the transaction actually modified any state 304 bool handleMessageTransaction(); 305 306 // Returns whether a new buffer has been latched (see handlePageFlip()) 307 bool handleMessageInvalidate(); 308 309 void handleMessageRefresh(); 310 311 void handleTransaction(uint32_t transactionFlags); 312 void handleTransactionLocked(uint32_t transactionFlags); 313 314 void updateCursorAsync(); 315 316 /* handlePageFlip - latch a new buffer if available and compute the dirty 317 * region. Returns whether a new buffer has been latched, i.e., whether it 318 * is necessary to perform a refresh during this vsync. 319 */ 320 bool handlePageFlip(); 321 322 /* ------------------------------------------------------------------------ 323 * Transactions 324 */ 325 uint32_t getTransactionFlags(uint32_t flags); 326 uint32_t peekTransactionFlags(); 327 uint32_t setTransactionFlags(uint32_t flags); 328 void commitTransaction(); 329 uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s); 330 uint32_t setDisplayStateLocked(const DisplayState& s); 331 332 /* ------------------------------------------------------------------------ 333 * Layer management 334 */ 335 status_t createLayer(const String8& name, const sp<Client>& client, 336 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, 337 uint32_t windowType, uint32_t ownerUid, sp<IBinder>* handle, 338 sp<IGraphicBufferProducer>* gbp, sp<Layer>* parent); 339 340 status_t createNormalLayer(const sp<Client>& client, const String8& name, 341 uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, 342 sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp, 343 sp<Layer>* outLayer); 344 345 status_t createDimLayer(const sp<Client>& client, const String8& name, 346 uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle, 347 sp<IGraphicBufferProducer>* outGbp, sp<Layer>* outLayer); 348 349 // called in response to the window-manager calling 350 // ISurfaceComposerClient::destroySurface() 351 status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle); 352 353 // called when all clients have released all their references to 354 // this layer meaning it is entirely safe to destroy all 355 // resources associated to this layer. 356 status_t onLayerDestroyed(const wp<Layer>& layer); 357 358 // remove a layer from SurfaceFlinger immediately 359 status_t removeLayer(const sp<Layer>& layer); 360 361 // add a layer to SurfaceFlinger 362 status_t addClientLayer(const sp<Client>& client, 363 const sp<IBinder>& handle, 364 const sp<IGraphicBufferProducer>& gbc, 365 const sp<Layer>& lbc, 366 const sp<Layer>& parent); 367 368 /* ------------------------------------------------------------------------ 369 * Boot animation, on/off animations and screen capture 370 */ 371 372 void startBootAnim(); 373 374 void renderScreenImplLocked( 375 const sp<const DisplayDevice>& hw, 376 Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight, 377 int32_t minLayerZ, int32_t maxLayerZ, 378 bool yswap, bool useIdentityTransform, Transform::orientation_flags rotation); 379 380 status_t captureScreenImplLocked( 381 const sp<const DisplayDevice>& hw, 382 const sp<IGraphicBufferProducer>& producer, 383 Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight, 384 int32_t minLayerZ, int32_t maxLayerZ, 385 bool useIdentityTransform, Transform::orientation_flags rotation, 386 bool isLocalScreenshot); 387 388 sp<StartBootAnimThread> mStartBootAnimThread = nullptr; 389 390 /* ------------------------------------------------------------------------ 391 * EGL 392 */ 393 size_t getMaxTextureSize() const; 394 size_t getMaxViewportDims() const; 395 396 /* ------------------------------------------------------------------------ 397 * Display and layer stack management 398 */ 399 // called when starting, or restarting after system_server death 400 void initializeDisplays(); 401 402 // Create an IBinder for a builtin display and add it to current state 403 void createBuiltinDisplayLocked(DisplayDevice::DisplayType type); 404 405 // NOTE: can only be called from the main thread or with mStateLock held 406 sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const { 407 return mDisplays.valueFor(dpy); 408 } 409 410 // NOTE: can only be called from the main thread or with mStateLock held 411 sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) { 412 return mDisplays.valueFor(dpy); 413 } 414 415 int32_t getDisplayType(const sp<IBinder>& display) { 416 if (!display.get()) return NAME_NOT_FOUND; 417 for (int i = 0; i < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES; ++i) { 418 if (display == mBuiltinDisplays[i]) { 419 return i; 420 } 421 } 422 return NAME_NOT_FOUND; 423 } 424 425 // mark a region of a layer stack dirty. this updates the dirty 426 // region of all screens presenting this layer stack. 427 void invalidateLayerStack(uint32_t layerStack, const Region& dirty); 428 429#ifndef USE_HWC2 430 int32_t allocateHwcDisplayId(DisplayDevice::DisplayType type); 431#endif 432 433 /* ------------------------------------------------------------------------ 434 * H/W composer 435 */ 436 437 HWComposer& getHwComposer() const { return *mHwc; } 438 439 /* ------------------------------------------------------------------------ 440 * Compositing 441 */ 442 void invalidateHwcGeometry(); 443 void computeVisibleRegions(uint32_t layerStack, 444 Region& dirtyRegion, Region& opaqueRegion); 445 446 void preComposition(nsecs_t refreshStartTime); 447 void postComposition(nsecs_t refreshStartTime); 448 void updateCompositorTiming( 449 nsecs_t vsyncPhase, nsecs_t vsyncInterval, nsecs_t compositeTime, 450 std::shared_ptr<FenceTime>& presentFenceTime); 451 void rebuildLayerStacks(); 452 void setUpHWComposer(); 453 void doComposition(); 454 void doDebugFlashRegions(); 455 void doDisplayComposition(const sp<const DisplayDevice>& displayDevice, const Region& dirtyRegion); 456 457 // compose surfaces for display hw. this fails if using GL and the surface 458 // has been destroyed and is no longer valid. 459 bool doComposeSurfaces(const sp<const DisplayDevice>& displayDevice, const Region& dirty); 460 461 void postFramebuffer(); 462 void drawWormhole(const sp<const DisplayDevice>& displayDevice, const Region& region) const; 463 464 /* ------------------------------------------------------------------------ 465 * Display management 466 */ 467 468 /* ------------------------------------------------------------------------ 469 * VSync 470 */ 471 void enableHardwareVsync(); 472 void resyncToHardwareVsync(bool makeAvailable); 473 void disableHardwareVsync(bool makeUnavailable); 474 475public: 476 void resyncWithRateLimit(); 477 void getCompositorTiming(CompositorTiming* compositorTiming); 478private: 479 480 /* ------------------------------------------------------------------------ 481 * Debugging & dumpsys 482 */ 483 void listLayersLocked(const Vector<String16>& args, size_t& index, String8& result) const; 484 void dumpStatsLocked(const Vector<String16>& args, size_t& index, String8& result) const; 485 void clearStatsLocked(const Vector<String16>& args, size_t& index, String8& result); 486 void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const; 487 bool startDdmConnection(); 488 void appendSfConfigString(String8& result) const; 489 void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr, 490 const sp<const DisplayDevice>& hw, 491 int32_t minLayerZ, int32_t maxLayerZ); 492 493 void logFrameStats(); 494 495 void dumpStaticScreenStats(String8& result) const; 496 // Not const because each Layer needs to query Fences and cache timestamps. 497 void dumpFrameEventsLocked(String8& result); 498 499 void recordBufferingStats(const char* layerName, 500 std::vector<OccupancyTracker::Segment>&& history); 501 void dumpBufferingStats(String8& result) const; 502 503 bool isLayerTripleBufferingDisabled() const { 504 return this->mLayerTripleBufferingDisabled; 505 } 506 507#ifdef USE_HWC2 508 /* ------------------------------------------------------------------------ 509 * VrFlinger 510 */ 511 void clearHwcLayers(const LayerVector& layers); 512 void resetHwc(); 513 514 // Check to see if we should change to or from vr mode, and if so, perform 515 // the handoff. 516 void updateVrMode(); 517#endif 518 519 /* ------------------------------------------------------------------------ 520 * Attributes 521 */ 522 523 // access must be protected by mStateLock 524 mutable Mutex mStateLock; 525 State mCurrentState; 526 volatile int32_t mTransactionFlags; 527 Condition mTransactionCV; 528 bool mTransactionPending; 529 bool mAnimTransactionPending; 530 SortedVector< sp<Layer> > mLayersPendingRemoval; 531 SortedVector< wp<IBinder> > mGraphicBufferProducerList; 532 533 // protected by mStateLock (but we could use another lock) 534 bool mLayersRemoved; 535 bool mLayersAdded; 536 537 // access must be protected by mInvalidateLock 538 volatile int32_t mRepaintEverything; 539 540 // current, real and vr hardware composers. 541 HWComposer* mHwc; 542#ifdef USE_HWC2 543 HWComposer* mRealHwc; 544 HWComposer* mVrHwc; 545#endif 546 // constant members (no synchronization needed for access) 547 RenderEngine* mRenderEngine; 548 nsecs_t mBootTime; 549 bool mGpuToCpuSupported; 550 sp<EventThread> mEventThread; 551 sp<EventThread> mSFEventThread; 552 sp<EventThread> mInjectorEventThread; 553 sp<InjectVSyncSource> mVSyncInjector; 554 sp<EventControlThread> mEventControlThread; 555 EGLContext mEGLContext; 556 EGLDisplay mEGLDisplay; 557 sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES]; 558 559#ifdef USE_HWC2 560 std::unique_ptr<dvr::VrFlinger> mVrFlinger; 561#endif 562 563 // Can only accessed from the main thread, these members 564 // don't need synchronization 565 State mDrawingState; 566 bool mVisibleRegionsDirty; 567#ifndef USE_HWC2 568 bool mHwWorkListDirty; 569#else 570 bool mGeometryInvalid; 571#endif 572 bool mAnimCompositionPending; 573#ifdef USE_HWC2 574 std::vector<sp<Layer>> mLayersWithQueuedFrames; 575 sp<Fence> mPreviousPresentFence = Fence::NO_FENCE; 576 bool mHadClientComposition = false; 577#endif 578 FenceTimeline mGlCompositionDoneTimeline; 579 FenceTimeline mDisplayTimeline; 580 581 // this may only be written from the main thread with mStateLock held 582 // it may be read from other threads with mStateLock held 583 DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays; 584 585 // don't use a lock for these, we don't care 586 int mVrModeSupported; 587 int mDebugRegion; 588 int mDebugDDMS; 589 int mDebugDisableHWC; 590 int mDebugDisableTransformHint; 591 volatile nsecs_t mDebugInSwapBuffers; 592 nsecs_t mLastSwapBufferTime; 593 volatile nsecs_t mDebugInTransaction; 594 nsecs_t mLastTransactionTime; 595 bool mBootFinished; 596 bool mForceFullDamage; 597#ifdef USE_HWC2 598 bool mPropagateBackpressure = true; 599#endif 600 SurfaceInterceptor mInterceptor; 601 bool mUseHwcVirtualDisplays = false; 602 603 // Restrict layers to use two buffers in their bufferqueues. 604 bool mLayerTripleBufferingDisabled = false; 605 606 // these are thread safe 607 mutable MessageQueue mEventQueue; 608 FrameTracker mAnimFrameTracker; 609 DispSync mPrimaryDispSync; 610 611 // protected by mDestroyedLayerLock; 612 mutable Mutex mDestroyedLayerLock; 613 Vector<Layer const *> mDestroyedLayers; 614 615 // protected by mHWVsyncLock 616 Mutex mHWVsyncLock; 617 bool mPrimaryHWVsyncEnabled; 618 bool mHWVsyncAvailable; 619 620 // protected by mCompositorTimingLock; 621 mutable std::mutex mCompositeTimingLock; 622 CompositorTiming mCompositorTiming; 623 624 // Only accessed from the main thread. 625 struct CompositePresentTime { 626 nsecs_t composite { -1 }; 627 std::shared_ptr<FenceTime> display { FenceTime::NO_FENCE }; 628 }; 629 std::queue<CompositePresentTime> mCompositePresentTimes; 630 631 /* ------------------------------------------------------------------------ 632 * Feature prototyping 633 */ 634 635 bool mInjectVSyncs; 636 637 Daltonizer mDaltonizer; 638#ifndef USE_HWC2 639 bool mDaltonize; 640#endif 641 642 mat4 mPreviousColorMatrix; 643 mat4 mColorMatrix; 644 bool mHasColorMatrix; 645 646 // Static screen stats 647 bool mHasPoweredOff; 648 static const size_t NUM_BUCKETS = 8; // < 1-7, 7+ 649 nsecs_t mFrameBuckets[NUM_BUCKETS]; 650 nsecs_t mTotalTime; 651 std::atomic<nsecs_t> mLastSwapTime; 652 653 size_t mNumLayers; 654 655 // Double- vs. triple-buffering stats 656 struct BufferingStats { 657 BufferingStats() 658 : numSegments(0), 659 totalTime(0), 660 twoBufferTime(0), 661 doubleBufferedTime(0), 662 tripleBufferedTime(0) {} 663 664 size_t numSegments; 665 nsecs_t totalTime; 666 667 // "Two buffer" means that a third buffer was never used, whereas 668 // "double-buffered" means that on average the segment only used two 669 // buffers (though it may have used a third for some part of the 670 // segment) 671 nsecs_t twoBufferTime; 672 nsecs_t doubleBufferedTime; 673 nsecs_t tripleBufferedTime; 674 }; 675 mutable Mutex mBufferingStatsMutex; 676 std::unordered_map<std::string, BufferingStats> mBufferingStats; 677 678 // Verify that transaction is being called by an approved process: 679 // either AID_GRAPHICS or AID_SYSTEM. 680 status_t CheckTransactCodeCredentials(uint32_t code); 681 682#ifdef USE_HWC2 683 sp<VrStateCallbacks> mVrStateCallbacks; 684 685 std::atomic<bool> mEnterVrMode; 686#endif 687 }; 688}; // namespace android 689 690#endif // ANDROID_SURFACE_FLINGER_H 691