SurfaceFlinger.h revision c8e387edfcead55b6e6fb1d05db279c264b644fa 
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 IGraphicBufferAlloc;
80class Layer;
81class LayerDim;
82class Surface;
83class RenderEngine;
84class EventControlThread;
85class VSyncSource;
86class InjectVSyncSource;
87class VrStateCallbacks;
88
89namespace dvr {
90class VrFlinger;
91} // namespace dvr
92
93// ---------------------------------------------------------------------------
94
95enum {
96    eTransactionNeeded        = 0x01,
97    eTraversalNeeded          = 0x02,
98    eDisplayTransactionNeeded = 0x04,
99    eTransactionMask          = 0x07
100};
101
102class SurfaceFlinger : public BnSurfaceComposer,
103                       private IBinder::DeathRecipient,
104                       private HWComposer::EventHandler
105{
106public:
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    // The offset in nanoseconds to use when DispSync timestamps present fence
135    // signaling time.
136    static int64_t dispSyncPresentTimeOffset;
137
138    // Some hardware can do RGB->YUV conversion more efficiently in hardware
139    // controlled by HWC than in hardware controlled by the video encoder.
140    // This instruct VirtualDisplaySurface to use HWC for such conversion on
141    // GL composition.
142    static bool useHwcForRgbToYuv;
143
144    // Maximum dimension supported by HWC for virtual display.
145    // Equal to min(max_height, max_width).
146    static uint64_t maxVirtualDisplaySize;
147
148    static char const* getServiceName() ANDROID_API {
149        return "SurfaceFlinger";
150    }
151
152    SurfaceFlinger() ANDROID_API;
153
154    // must be called before clients can connect
155    void init() ANDROID_API;
156
157    // starts SurfaceFlinger main loop in the current thread
158    void run() ANDROID_API;
159
160    enum {
161        EVENT_VSYNC = HWC_EVENT_VSYNC
162    };
163
164    // post an asynchronous message to the main thread
165    status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
166
167    // post a synchronous message to the main thread
168    status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
169
170    // force full composition on all displays
171    void repaintEverything();
172
173    // returns the default Display
174    sp<const DisplayDevice> getDefaultDisplayDevice() const {
175        return getDisplayDevice(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]);
176    }
177
178    // utility function to delete a texture on the main thread
179    void deleteTextureAsync(uint32_t texture);
180
181    // enable/disable h/w composer event
182    // TODO: this should be made accessible only to EventThread
183#ifdef USE_HWC2
184    void setVsyncEnabled(int disp, int enabled);
185#else
186    void eventControl(int disp, int event, int enabled);
187#endif
188
189    // called on the main thread by MessageQueue when an internal message
190    // is received
191    // TODO: this should be made accessible only to MessageQueue
192    void onMessageReceived(int32_t what);
193
194    // for debugging only
195    // TODO: this should be made accessible only to HWComposer
196    const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id);
197
198    RenderEngine& getRenderEngine() const {
199        return *mRenderEngine;
200    }
201
202    bool authenticateSurfaceTextureLocked(
203        const sp<IGraphicBufferProducer>& bufferProducer) const;
204
205private:
206    friend class Client;
207    friend class DisplayEventConnection;
208    friend class EventThread;
209    friend class Layer;
210    friend class MonitoredProducer;
211    friend class VrStateCallbacks;
212
213    // This value is specified in number of frames.  Log frame stats at most
214    // every half hour.
215    enum { LOG_FRAME_STATS_PERIOD =  30*60*60 };
216
217    static const size_t MAX_LAYERS = 4096;
218
219    // We're reference counted, never destroy SurfaceFlinger directly
220    virtual ~SurfaceFlinger();
221
222    /* ------------------------------------------------------------------------
223     * Internal data structures
224     */
225
226    class State {
227    public:
228        LayerVector layersSortedByZ;
229        DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays;
230
231        void traverseInZOrder(const std::function<void(Layer*)>& consume) const;
232        void traverseInReverseZOrder(const std::function<void(Layer*)>& consume) const;
233    };
234
235    /* ------------------------------------------------------------------------
236     * IBinder interface
237     */
238    virtual status_t onTransact(uint32_t code, const Parcel& data,
239        Parcel* reply, uint32_t flags);
240    virtual status_t dump(int fd, const Vector<String16>& args);
241
242    /* ------------------------------------------------------------------------
243     * ISurfaceComposer interface
244     */
245    virtual sp<ISurfaceComposerClient> createConnection();
246    virtual sp<ISurfaceComposerClient> createScopedConnection(const sp<IGraphicBufferProducer>& gbp);
247    virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc();
248    virtual sp<IBinder> createDisplay(const String8& displayName, bool secure);
249    virtual void destroyDisplay(const sp<IBinder>& display);
250    virtual sp<IBinder> getBuiltInDisplay(int32_t id);
251    virtual void setTransactionState(const Vector<ComposerState>& state,
252            const Vector<DisplayState>& displays, uint32_t flags);
253    virtual void bootFinished();
254    virtual bool authenticateSurfaceTexture(
255        const sp<IGraphicBufferProducer>& bufferProducer) const;
256    virtual status_t getSupportedFrameTimestamps(
257            std::vector<FrameEvent>* outSupported) const;
258    virtual sp<IDisplayEventConnection> createDisplayEventConnection();
259    virtual status_t captureScreen(const sp<IBinder>& display,
260            const sp<IGraphicBufferProducer>& producer,
261            Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
262            int32_t minLayerZ, int32_t maxLayerZ,
263            bool useIdentityTransform, ISurfaceComposer::Rotation rotation);
264    virtual status_t getDisplayStats(const sp<IBinder>& display,
265            DisplayStatInfo* stats);
266    virtual status_t getDisplayConfigs(const sp<IBinder>& display,
267            Vector<DisplayInfo>* configs);
268    virtual int getActiveConfig(const sp<IBinder>& display);
269    virtual status_t getDisplayColorModes(const sp<IBinder>& display,
270            Vector<android_color_mode_t>* configs);
271    virtual android_color_mode_t getActiveColorMode(const sp<IBinder>& display);
272    virtual status_t setActiveColorMode(const sp<IBinder>& display, android_color_mode_t colorMode);
273    virtual void setPowerMode(const sp<IBinder>& display, int mode);
274    virtual status_t setActiveConfig(const sp<IBinder>& display, int id);
275    virtual status_t clearAnimationFrameStats();
276    virtual status_t getAnimationFrameStats(FrameStats* outStats) const;
277    virtual status_t getHdrCapabilities(const sp<IBinder>& display,
278            HdrCapabilities* outCapabilities) const;
279    virtual status_t enableVSyncInjections(bool enable);
280    virtual status_t injectVSync(nsecs_t when);
281
282
283    /* ------------------------------------------------------------------------
284     * DeathRecipient interface
285     */
286    virtual void binderDied(const wp<IBinder>& who);
287
288    /* ------------------------------------------------------------------------
289     * RefBase interface
290     */
291    virtual void onFirstRef();
292
293    /* ------------------------------------------------------------------------
294     * HWComposer::EventHandler interface
295     */
296    virtual void onVSyncReceived(HWComposer* composer, int type, nsecs_t timestamp);
297    virtual void onHotplugReceived(int disp, bool connected);
298    virtual void onInvalidateReceived(HWComposer* composer);
299
300    /* ------------------------------------------------------------------------
301     * Message handling
302     */
303    void waitForEvent();
304    void signalTransaction();
305    void signalLayerUpdate();
306    void signalRefresh();
307
308    // called on the main thread in response to initializeDisplays()
309    void onInitializeDisplays();
310    // called on the main thread in response to setActiveConfig()
311    void setActiveConfigInternal(const sp<DisplayDevice>& hw, int mode);
312    // called on the main thread in response to setPowerMode()
313    void setPowerModeInternal(const sp<DisplayDevice>& hw, int mode);
314
315    // Called on the main thread in response to setActiveColorMode()
316    void setActiveColorModeInternal(const sp<DisplayDevice>& hw, android_color_mode_t colorMode);
317
318    // Returns whether the transaction actually modified any state
319    bool handleMessageTransaction();
320
321    // Returns whether a new buffer has been latched (see handlePageFlip())
322    bool handleMessageInvalidate();
323
324    void handleMessageRefresh();
325
326    void handleTransaction(uint32_t transactionFlags);
327    void handleTransactionLocked(uint32_t transactionFlags);
328
329    void updateCursorAsync();
330
331    /* handlePageFlip - latch a new buffer if available and compute the dirty
332     * region. Returns whether a new buffer has been latched, i.e., whether it
333     * is necessary to perform a refresh during this vsync.
334     */
335    bool handlePageFlip();
336
337    /* ------------------------------------------------------------------------
338     * Transactions
339     */
340    uint32_t getTransactionFlags(uint32_t flags);
341    uint32_t peekTransactionFlags();
342    uint32_t setTransactionFlags(uint32_t flags);
343    void commitTransaction();
344    uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s);
345    uint32_t setDisplayStateLocked(const DisplayState& s);
346
347    /* ------------------------------------------------------------------------
348     * Layer management
349     */
350    status_t createLayer(const String8& name, const sp<Client>& client,
351            uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
352            uint32_t windowType, uint32_t ownerUid, sp<IBinder>* handle,
353            sp<IGraphicBufferProducer>* gbp, sp<Layer>* parent);
354
355    status_t createNormalLayer(const sp<Client>& client, const String8& name,
356            uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
357            sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp,
358            sp<Layer>* outLayer);
359
360    status_t createDimLayer(const sp<Client>& client, const String8& name,
361            uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
362            sp<IGraphicBufferProducer>* outGbp, sp<Layer>* outLayer);
363
364    // called in response to the window-manager calling
365    // ISurfaceComposerClient::destroySurface()
366    status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle);
367
368    // called when all clients have released all their references to
369    // this layer meaning it is entirely safe to destroy all
370    // resources associated to this layer.
371    status_t onLayerDestroyed(const wp<Layer>& layer);
372
373    // remove a layer from SurfaceFlinger immediately
374    status_t removeLayer(const sp<Layer>& layer);
375
376    // add a layer to SurfaceFlinger
377    status_t addClientLayer(const sp<Client>& client,
378            const sp<IBinder>& handle,
379            const sp<IGraphicBufferProducer>& gbc,
380            const sp<Layer>& lbc,
381            const sp<Layer>& parent);
382
383    /* ------------------------------------------------------------------------
384     * Boot animation, on/off animations and screen capture
385     */
386
387    void startBootAnim();
388
389    void renderScreenImplLocked(
390            const sp<const DisplayDevice>& hw,
391            Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
392            int32_t minLayerZ, int32_t maxLayerZ,
393            bool yswap, bool useIdentityTransform, Transform::orientation_flags rotation);
394
395    status_t captureScreenImplLocked(
396            const sp<const DisplayDevice>& hw,
397            const sp<IGraphicBufferProducer>& producer,
398            Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
399            int32_t minLayerZ, int32_t maxLayerZ,
400            bool useIdentityTransform, Transform::orientation_flags rotation,
401            bool isLocalScreenshot);
402
403    sp<StartBootAnimThread> mStartBootAnimThread = nullptr;
404
405    /* ------------------------------------------------------------------------
406     * EGL
407     */
408    size_t getMaxTextureSize() const;
409    size_t getMaxViewportDims() const;
410
411    /* ------------------------------------------------------------------------
412     * Display and layer stack management
413     */
414    // called when starting, or restarting after system_server death
415    void initializeDisplays();
416
417    // Create an IBinder for a builtin display and add it to current state
418    void createBuiltinDisplayLocked(DisplayDevice::DisplayType type);
419
420    // NOTE: can only be called from the main thread or with mStateLock held
421    sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const {
422        return mDisplays.valueFor(dpy);
423    }
424
425    // NOTE: can only be called from the main thread or with mStateLock held
426    sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) {
427        return mDisplays.valueFor(dpy);
428    }
429
430    int32_t getDisplayType(const sp<IBinder>& display) {
431        if (!display.get()) return NAME_NOT_FOUND;
432        for (int i = 0; i < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES; ++i) {
433            if (display == mBuiltinDisplays[i]) {
434                return i;
435            }
436        }
437        return NAME_NOT_FOUND;
438    }
439
440    // mark a region of a layer stack dirty. this updates the dirty
441    // region of all screens presenting this layer stack.
442    void invalidateLayerStack(uint32_t layerStack, const Region& dirty);
443
444#ifndef USE_HWC2
445    int32_t allocateHwcDisplayId(DisplayDevice::DisplayType type);
446#endif
447
448    /* ------------------------------------------------------------------------
449     * H/W composer
450     */
451
452    HWComposer& getHwComposer() const { return *mHwc; }
453
454    /* ------------------------------------------------------------------------
455     * Compositing
456     */
457    void invalidateHwcGeometry();
458    void computeVisibleRegions(uint32_t layerStack,
459            Region& dirtyRegion, Region& opaqueRegion);
460
461    void preComposition(nsecs_t refreshStartTime);
462    void postComposition(nsecs_t refreshStartTime);
463    void updateCompositorTiming(
464            nsecs_t vsyncPhase, nsecs_t vsyncInterval, nsecs_t compositeTime,
465            std::shared_ptr<FenceTime>& presentFenceTime);
466    void rebuildLayerStacks();
467    void setUpHWComposer();
468    void doComposition();
469    void doDebugFlashRegions();
470    void doDisplayComposition(const sp<const DisplayDevice>& displayDevice, const Region& dirtyRegion);
471
472    // compose surfaces for display hw. this fails if using GL and the surface
473    // has been destroyed and is no longer valid.
474    bool doComposeSurfaces(const sp<const DisplayDevice>& displayDevice, const Region& dirty);
475
476    void postFramebuffer();
477    void drawWormhole(const sp<const DisplayDevice>& displayDevice, const Region& region) const;
478
479    /* ------------------------------------------------------------------------
480     * Display management
481     */
482
483    /* ------------------------------------------------------------------------
484     * VSync
485     */
486    void enableHardwareVsync();
487    void resyncToHardwareVsync(bool makeAvailable);
488    void disableHardwareVsync(bool makeUnavailable);
489
490public:
491    void resyncWithRateLimit();
492    void getCompositorTiming(CompositorTiming* compositorTiming);
493private:
494
495    /* ------------------------------------------------------------------------
496     * Debugging & dumpsys
497     */
498    void listLayersLocked(const Vector<String16>& args, size_t& index, String8& result) const;
499    void dumpStatsLocked(const Vector<String16>& args, size_t& index, String8& result) const;
500    void clearStatsLocked(const Vector<String16>& args, size_t& index, String8& result);
501    void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const;
502    bool startDdmConnection();
503    void appendSfConfigString(String8& result) const;
504    void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
505            const sp<const DisplayDevice>& hw,
506            int32_t minLayerZ, int32_t maxLayerZ);
507
508    void logFrameStats();
509
510    void dumpStaticScreenStats(String8& result) const;
511    // Not const because each Layer needs to query Fences and cache timestamps.
512    void dumpFrameEventsLocked(String8& result);
513
514    void recordBufferingStats(const char* layerName,
515            std::vector<OccupancyTracker::Segment>&& history);
516    void dumpBufferingStats(String8& result) const;
517
518    bool isLayerTripleBufferingDisabled() const {
519        return this->mLayerTripleBufferingDisabled;
520    }
521
522#ifdef USE_HWC2
523    /* ------------------------------------------------------------------------
524     * VrFlinger
525     */
526    void clearHwcLayers(const LayerVector& layers);
527    void resetHwc();
528
529    // Check to see if we should change to or from vr mode, and if so, perform
530    // the handoff.
531    void updateVrMode();
532#endif
533
534    /* ------------------------------------------------------------------------
535     * Attributes
536     */
537
538    // access must be protected by mStateLock
539    mutable Mutex mStateLock;
540    State mCurrentState;
541    volatile int32_t mTransactionFlags;
542    Condition mTransactionCV;
543    bool mTransactionPending;
544    bool mAnimTransactionPending;
545    SortedVector< sp<Layer> > mLayersPendingRemoval;
546    SortedVector< wp<IBinder> > mGraphicBufferProducerList;
547
548    // protected by mStateLock (but we could use another lock)
549    bool mLayersRemoved;
550    bool mLayersAdded;
551
552    // access must be protected by mInvalidateLock
553    volatile int32_t mRepaintEverything;
554
555    // current, real and vr hardware composers.
556    HWComposer* mHwc;
557#ifdef USE_HWC2
558    HWComposer* mRealHwc;
559    HWComposer* mVrHwc;
560#endif
561    // constant members (no synchronization needed for access)
562    RenderEngine* mRenderEngine;
563    nsecs_t mBootTime;
564    bool mGpuToCpuSupported;
565    sp<EventThread> mEventThread;
566    sp<EventThread> mSFEventThread;
567    sp<EventThread> mInjectorEventThread;
568    sp<InjectVSyncSource> mVSyncInjector;
569    sp<EventControlThread> mEventControlThread;
570    EGLContext mEGLContext;
571    EGLDisplay mEGLDisplay;
572    sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES];
573
574#ifdef USE_HWC2
575    std::unique_ptr<dvr::VrFlinger> mVrFlinger;
576#endif
577
578    // Can only accessed from the main thread, these members
579    // don't need synchronization
580    State mDrawingState;
581    bool mVisibleRegionsDirty;
582#ifndef USE_HWC2
583    bool mHwWorkListDirty;
584#else
585    bool mGeometryInvalid;
586#endif
587    bool mAnimCompositionPending;
588#ifdef USE_HWC2
589    std::vector<sp<Layer>> mLayersWithQueuedFrames;
590    sp<Fence> mPreviousPresentFence = Fence::NO_FENCE;
591    bool mHadClientComposition = false;
592#endif
593    FenceTimeline mGlCompositionDoneTimeline;
594    FenceTimeline mDisplayTimeline;
595
596    // this may only be written from the main thread with mStateLock held
597    // it may be read from other threads with mStateLock held
598    DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays;
599
600    // don't use a lock for these, we don't care
601    int mVrModeSupported;
602    int mDebugRegion;
603    int mDebugDDMS;
604    int mDebugDisableHWC;
605    int mDebugDisableTransformHint;
606    volatile nsecs_t mDebugInSwapBuffers;
607    nsecs_t mLastSwapBufferTime;
608    volatile nsecs_t mDebugInTransaction;
609    nsecs_t mLastTransactionTime;
610    bool mBootFinished;
611    bool mForceFullDamage;
612#ifdef USE_HWC2
613    bool mPropagateBackpressure = true;
614#endif
615    SurfaceInterceptor mInterceptor;
616    bool mUseHwcVirtualDisplays = false;
617
618    // Restrict layers to use two buffers in their bufferqueues.
619    bool mLayerTripleBufferingDisabled = false;
620
621    // these are thread safe
622    mutable MessageQueue mEventQueue;
623    FrameTracker mAnimFrameTracker;
624    DispSync mPrimaryDispSync;
625
626    // protected by mDestroyedLayerLock;
627    mutable Mutex mDestroyedLayerLock;
628    Vector<Layer const *> mDestroyedLayers;
629
630    // protected by mHWVsyncLock
631    Mutex mHWVsyncLock;
632    bool mPrimaryHWVsyncEnabled;
633    bool mHWVsyncAvailable;
634
635    // protected by mCompositorTimingLock;
636    mutable std::mutex mCompositeTimingLock;
637    CompositorTiming mCompositorTiming;
638
639    // Only accessed from the main thread.
640    struct CompositePresentTime {
641        nsecs_t composite { -1 };
642        std::shared_ptr<FenceTime> display { FenceTime::NO_FENCE };
643    };
644    std::queue<CompositePresentTime> mCompositePresentTimes;
645
646    /* ------------------------------------------------------------------------
647     * Feature prototyping
648     */
649
650    bool mInjectVSyncs;
651
652    Daltonizer mDaltonizer;
653#ifndef USE_HWC2
654    bool mDaltonize;
655#endif
656
657    mat4 mPreviousColorMatrix;
658    mat4 mColorMatrix;
659    bool mHasColorMatrix;
660
661    // Static screen stats
662    bool mHasPoweredOff;
663    static const size_t NUM_BUCKETS = 8; // < 1-7, 7+
664    nsecs_t mFrameBuckets[NUM_BUCKETS];
665    nsecs_t mTotalTime;
666    std::atomic<nsecs_t> mLastSwapTime;
667
668    size_t mNumLayers;
669
670    // Double- vs. triple-buffering stats
671    struct BufferingStats {
672        BufferingStats()
673          : numSegments(0),
674            totalTime(0),
675            twoBufferTime(0),
676            doubleBufferedTime(0),
677            tripleBufferedTime(0) {}
678
679        size_t numSegments;
680        nsecs_t totalTime;
681
682        // "Two buffer" means that a third buffer was never used, whereas
683        // "double-buffered" means that on average the segment only used two
684        // buffers (though it may have used a third for some part of the
685        // segment)
686        nsecs_t twoBufferTime;
687        nsecs_t doubleBufferedTime;
688        nsecs_t tripleBufferedTime;
689    };
690    mutable Mutex mBufferingStatsMutex;
691    std::unordered_map<std::string, BufferingStats> mBufferingStats;
692
693    // Verify that transaction is being called by an approved process:
694    // either AID_GRAPHICS or AID_SYSTEM.
695    status_t CheckTransactCodeCredentials(uint32_t code);
696
697#ifdef USE_HWC2
698    sp<VrStateCallbacks> mVrStateCallbacks;
699
700    std::atomic<bool> mEnterVrMode;
701#endif
702    };
703}; // namespace android
704
705#endif // ANDROID_SURFACE_FLINGER_H
706