SurfaceFlinger.h revision 7d3dcb9235ec149af2f5139a8a9c6eac859d92e2 
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;
86
87namespace dvr {
88class VrFlinger;
89} // namespace dvr
90
91// ---------------------------------------------------------------------------
92
93enum {
94    eTransactionNeeded        = 0x01,
95    eTraversalNeeded          = 0x02,
96    eDisplayTransactionNeeded = 0x04,
97    eTransactionMask          = 0x07
98};
99
100class SurfaceFlinger : public BnSurfaceComposer,
101                       private IBinder::DeathRecipient,
102                       private HWComposer::EventHandler
103{
104public:
105
106    // This is the phase offset in nanoseconds of the software vsync event
107    // relative to the vsync event reported by HWComposer.  The software vsync
108    // event is when SurfaceFlinger and Choreographer-based applications run each
109    // frame.
110    //
111    // This phase offset allows adjustment of the minimum latency from application
112    // wake-up time (by Choreographer) to the time at which the resulting window
113    // image is displayed.  This value may be either positive (after the HW vsync)
114    // or negative (before the HW vsync). Setting it to 0 will result in a lower
115    // latency bound of two vsync periods because the app and SurfaceFlinger
116    // will run just after the HW vsync.  Setting it to a positive number will
117    // result in the minimum latency being:
118    //
119    //     (2 * VSYNC_PERIOD - (vsyncPhaseOffsetNs % VSYNC_PERIOD))
120    //
121    // Note that reducing this latency makes it more likely for the applications
122    // to not have their window content image ready in time.  When this happens
123    // the latency will end up being an additional vsync period, and animations
124    // will hiccup.  Therefore, this latency should be tuned somewhat
125    // conservatively (or at least with awareness of the trade-off being made).
126    static int64_t vsyncPhaseOffsetNs;
127    static int64_t sfVsyncPhaseOffsetNs;
128
129    // If fences from sync Framework are supported.
130    static bool hasSyncFramework;
131
132    // Instruct the Render Engine to use EGL_IMG_context_priority is available.
133    static bool useContextPriority;
134
135    // The offset in nanoseconds to use when DispSync timestamps present fence
136    // signaling time.
137    static int64_t dispSyncPresentTimeOffset;
138
139    // Some hardware can do RGB->YUV conversion more efficiently in hardware
140    // controlled by HWC than in hardware controlled by the video encoder.
141    // This instruct VirtualDisplaySurface to use HWC for such conversion on
142    // GL composition.
143    static bool useHwcForRgbToYuv;
144
145    // Maximum dimension supported by HWC for virtual display.
146    // Equal to min(max_height, max_width).
147    static uint64_t maxVirtualDisplaySize;
148
149    // Controls the number of buffers SurfaceFlinger will allocate for use in
150    // FramebufferSurface
151    static int64_t maxFrameBufferAcquiredBuffers;
152
153    // Indicate if platform supports color management on its
154    // wide-color display. This is typically found on devices
155    // with wide gamut (e.g. Display-P3) display.
156    // This also allows devices with wide-color displays that don't
157    // want to support color management to disable color management.
158    static bool hasWideColorDisplay;
159
160    static char const* getServiceName() ANDROID_API {
161        return "SurfaceFlinger";
162    }
163
164    SurfaceFlinger() ANDROID_API;
165
166    // must be called before clients can connect
167    void init() ANDROID_API;
168
169    // starts SurfaceFlinger main loop in the current thread
170    void run() ANDROID_API;
171
172    enum {
173        EVENT_VSYNC = HWC_EVENT_VSYNC
174    };
175
176    // post an asynchronous message to the main thread
177    status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
178
179    // post a synchronous message to the main thread
180    status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
181
182    // force full composition on all displays
183    void repaintEverything();
184
185    // returns the default Display
186    sp<const DisplayDevice> getDefaultDisplayDevice() const {
187        Mutex::Autolock _l(mStateLock);
188        return getDefaultDisplayDeviceLocked();
189    }
190
191    // utility function to delete a texture on the main thread
192    void deleteTextureAsync(uint32_t texture);
193
194    // enable/disable h/w composer event
195    // TODO: this should be made accessible only to EventThread
196#ifdef USE_HWC2
197    void setVsyncEnabled(int disp, int enabled);
198#else
199    void eventControl(int disp, int event, int enabled);
200#endif
201
202    // called on the main thread by MessageQueue when an internal message
203    // is received
204    // TODO: this should be made accessible only to MessageQueue
205    void onMessageReceived(int32_t what);
206
207    // for debugging only
208    // TODO: this should be made accessible only to HWComposer
209    const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id);
210
211    RenderEngine& getRenderEngine() const {
212        return *mRenderEngine;
213    }
214
215    bool authenticateSurfaceTextureLocked(
216        const sp<IGraphicBufferProducer>& bufferProducer) const;
217
218private:
219    friend class Client;
220    friend class DisplayEventConnection;
221    friend class EventThread;
222    friend class Layer;
223    friend class MonitoredProducer;
224
225    // This value is specified in number of frames.  Log frame stats at most
226    // every half hour.
227    enum { LOG_FRAME_STATS_PERIOD =  30*60*60 };
228
229    static const size_t MAX_LAYERS = 4096;
230    static constexpr const char* kTimestampProperty = "service.sf.present_timestamp";
231
232    // We're reference counted, never destroy SurfaceFlinger directly
233    virtual ~SurfaceFlinger();
234
235    /* ------------------------------------------------------------------------
236     * Internal data structures
237     */
238
239    class State {
240    public:
241        LayerVector layersSortedByZ;
242        DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays;
243
244        void traverseInZOrder(const std::function<void(Layer*)>& consume) const;
245        void traverseInReverseZOrder(const std::function<void(Layer*)>& consume) const;
246    };
247
248    /* ------------------------------------------------------------------------
249     * IBinder interface
250     */
251    virtual status_t onTransact(uint32_t code, const Parcel& data,
252        Parcel* reply, uint32_t flags);
253    virtual status_t dump(int fd, const Vector<String16>& args);
254
255    /* ------------------------------------------------------------------------
256     * ISurfaceComposer interface
257     */
258    virtual sp<ISurfaceComposerClient> createConnection();
259    virtual sp<ISurfaceComposerClient> createScopedConnection(const sp<IGraphicBufferProducer>& gbp);
260    virtual sp<IBinder> createDisplay(const String8& displayName, bool secure);
261    virtual void destroyDisplay(const sp<IBinder>& display);
262    virtual sp<IBinder> getBuiltInDisplay(int32_t id);
263    virtual void setTransactionState(const Vector<ComposerState>& state,
264            const Vector<DisplayState>& displays, uint32_t flags);
265    virtual void bootFinished();
266    virtual bool authenticateSurfaceTexture(
267        const sp<IGraphicBufferProducer>& bufferProducer) const;
268    virtual status_t getSupportedFrameTimestamps(
269            std::vector<FrameEvent>* outSupported) const;
270    virtual sp<IDisplayEventConnection> createDisplayEventConnection();
271    virtual status_t captureScreen(const sp<IBinder>& display,
272            const sp<IGraphicBufferProducer>& producer,
273            Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
274            int32_t minLayerZ, int32_t maxLayerZ,
275            bool useIdentityTransform, ISurfaceComposer::Rotation rotation);
276    virtual status_t getDisplayStats(const sp<IBinder>& display,
277            DisplayStatInfo* stats);
278    virtual status_t getDisplayConfigs(const sp<IBinder>& display,
279            Vector<DisplayInfo>* configs);
280    virtual int getActiveConfig(const sp<IBinder>& display);
281    virtual status_t getDisplayColorModes(const sp<IBinder>& display,
282            Vector<android_color_mode_t>* configs);
283    virtual android_color_mode_t getActiveColorMode(const sp<IBinder>& display);
284    virtual status_t setActiveColorMode(const sp<IBinder>& display, android_color_mode_t colorMode);
285    virtual void setPowerMode(const sp<IBinder>& display, int mode);
286    virtual status_t setActiveConfig(const sp<IBinder>& display, int id);
287    virtual status_t clearAnimationFrameStats();
288    virtual status_t getAnimationFrameStats(FrameStats* outStats) const;
289    virtual status_t getHdrCapabilities(const sp<IBinder>& display,
290            HdrCapabilities* outCapabilities) const;
291    virtual status_t enableVSyncInjections(bool enable);
292    virtual status_t injectVSync(nsecs_t when);
293
294
295    /* ------------------------------------------------------------------------
296     * DeathRecipient interface
297     */
298    virtual void binderDied(const wp<IBinder>& who);
299
300    /* ------------------------------------------------------------------------
301     * RefBase interface
302     */
303    virtual void onFirstRef();
304
305    /* ------------------------------------------------------------------------
306     * HWComposer::EventHandler interface
307     */
308    virtual void onVSyncReceived(HWComposer* composer, int type, nsecs_t timestamp);
309    virtual void onHotplugReceived(HWComposer* composer, int disp, bool connected);
310    virtual void onInvalidateReceived(HWComposer* composer);
311
312    /* ------------------------------------------------------------------------
313     * Message handling
314     */
315    void waitForEvent();
316    void signalTransaction();
317    void signalLayerUpdate();
318    void signalRefresh();
319
320    // called on the main thread in response to initializeDisplays()
321    void onInitializeDisplays();
322    // called on the main thread in response to setActiveConfig()
323    void setActiveConfigInternal(const sp<DisplayDevice>& hw, int mode);
324    // called on the main thread in response to setPowerMode()
325    void setPowerModeInternal(const sp<DisplayDevice>& hw, int mode);
326
327    // Called on the main thread in response to setActiveColorMode()
328    void setActiveColorModeInternal(const sp<DisplayDevice>& hw, android_color_mode_t colorMode);
329
330    // Returns whether the transaction actually modified any state
331    bool handleMessageTransaction();
332
333    // Returns whether a new buffer has been latched (see handlePageFlip())
334    bool handleMessageInvalidate();
335
336    void handleMessageRefresh();
337
338    void handleTransaction(uint32_t transactionFlags);
339    void handleTransactionLocked(uint32_t transactionFlags);
340
341    void updateCursorAsync();
342
343    /* handlePageFlip - latch a new buffer if available and compute the dirty
344     * region. Returns whether a new buffer has been latched, i.e., whether it
345     * is necessary to perform a refresh during this vsync.
346     */
347    bool handlePageFlip();
348
349    /* ------------------------------------------------------------------------
350     * Transactions
351     */
352    uint32_t getTransactionFlags(uint32_t flags);
353    uint32_t peekTransactionFlags();
354    uint32_t setTransactionFlags(uint32_t flags);
355    void commitTransaction();
356    uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s);
357    uint32_t setDisplayStateLocked(const DisplayState& s);
358
359    /* ------------------------------------------------------------------------
360     * Layer management
361     */
362    status_t createLayer(const String8& name, const sp<Client>& client,
363            uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
364            uint32_t windowType, uint32_t ownerUid, sp<IBinder>* handle,
365            sp<IGraphicBufferProducer>* gbp, sp<Layer>* parent);
366
367    status_t createNormalLayer(const sp<Client>& client, const String8& name,
368            uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
369            sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp,
370            sp<Layer>* outLayer);
371
372    status_t createDimLayer(const sp<Client>& client, const String8& name,
373            uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
374            sp<IGraphicBufferProducer>* outGbp, sp<Layer>* outLayer);
375
376    String8 getUniqueLayerName(const String8& name);
377
378    // called in response to the window-manager calling
379    // ISurfaceComposerClient::destroySurface()
380    status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle);
381
382    // called when all clients have released all their references to
383    // this layer meaning it is entirely safe to destroy all
384    // resources associated to this layer.
385    status_t onLayerDestroyed(const wp<Layer>& layer);
386
387    // remove a layer from SurfaceFlinger immediately
388    status_t removeLayer(const sp<Layer>& layer);
389
390    // add a layer to SurfaceFlinger
391    status_t addClientLayer(const sp<Client>& client,
392            const sp<IBinder>& handle,
393            const sp<IGraphicBufferProducer>& gbc,
394            const sp<Layer>& lbc,
395            const sp<Layer>& parent);
396
397    /* ------------------------------------------------------------------------
398     * Boot animation, on/off animations and screen capture
399     */
400
401    void startBootAnim();
402
403    void renderScreenImplLocked(
404            const sp<const DisplayDevice>& hw,
405            Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
406            int32_t minLayerZ, int32_t maxLayerZ,
407            bool yswap, bool useIdentityTransform, Transform::orientation_flags rotation);
408
409    status_t captureScreenImplLocked(
410            const sp<const DisplayDevice>& hw,
411            const sp<IGraphicBufferProducer>& producer,
412            Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
413            int32_t minLayerZ, int32_t maxLayerZ,
414            bool useIdentityTransform, Transform::orientation_flags rotation,
415            bool isLocalScreenshot);
416
417    sp<StartBootAnimThread> mStartBootAnimThread = nullptr;
418
419    /* ------------------------------------------------------------------------
420     * EGL
421     */
422    size_t getMaxTextureSize() const;
423    size_t getMaxViewportDims() const;
424
425    /* ------------------------------------------------------------------------
426     * Display and layer stack management
427     */
428    // called when starting, or restarting after system_server death
429    void initializeDisplays();
430
431    // Create an IBinder for a builtin display and add it to current state
432    void createBuiltinDisplayLocked(DisplayDevice::DisplayType type);
433
434
435    sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const {
436      Mutex::Autolock _l(mStateLock);
437      return getDisplayDeviceLocked(dpy);
438    }
439
440    sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) {
441      Mutex::Autolock _l(mStateLock);
442      return getDisplayDeviceLocked(dpy);
443    }
444
445    // NOTE: can only be called from the main thread or with mStateLock held
446    sp<const DisplayDevice> getDisplayDeviceLocked(const wp<IBinder>& dpy) const {
447        return mDisplays.valueFor(dpy);
448    }
449
450    // NOTE: can only be called from the main thread or with mStateLock held
451    sp<DisplayDevice> getDisplayDeviceLocked(const wp<IBinder>& dpy) {
452        return mDisplays.valueFor(dpy);
453    }
454
455    sp<const DisplayDevice> getDefaultDisplayDeviceLocked() const {
456        return getDisplayDeviceLocked(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]);
457    }
458
459    void createDefaultDisplayDevice();
460
461    int32_t getDisplayType(const sp<IBinder>& display) {
462        if (!display.get()) return NAME_NOT_FOUND;
463        for (int i = 0; i < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES; ++i) {
464            if (display == mBuiltinDisplays[i]) {
465                return i;
466            }
467        }
468        return NAME_NOT_FOUND;
469    }
470
471    // mark a region of a layer stack dirty. this updates the dirty
472    // region of all screens presenting this layer stack.
473    void invalidateLayerStack(uint32_t layerStack, const Region& dirty);
474
475#ifndef USE_HWC2
476    int32_t allocateHwcDisplayId(DisplayDevice::DisplayType type);
477#endif
478
479    /* ------------------------------------------------------------------------
480     * H/W composer
481     */
482
483    HWComposer& getHwComposer() const { return *mHwc; }
484
485    /* ------------------------------------------------------------------------
486     * Compositing
487     */
488    void invalidateHwcGeometry();
489    void computeVisibleRegions(uint32_t layerStack,
490            Region& dirtyRegion, Region& opaqueRegion);
491
492    void preComposition(nsecs_t refreshStartTime);
493    void postComposition(nsecs_t refreshStartTime);
494    void updateCompositorTiming(
495            nsecs_t vsyncPhase, nsecs_t vsyncInterval, nsecs_t compositeTime,
496            std::shared_ptr<FenceTime>& presentFenceTime);
497    void setCompositorTimingSnapped(
498            nsecs_t vsyncPhase, nsecs_t vsyncInterval,
499            nsecs_t compositeToPresentLatency);
500    void rebuildLayerStacks();
501
502    // Given a dataSpace, returns the appropriate color_mode to use
503    // to display that dataSpace.
504    android_color_mode pickColorMode(android_dataspace dataSpace);
505    android_dataspace bestTargetDataSpace(android_dataspace a, android_dataspace b);
506
507    void setUpHWComposer();
508    void doComposition();
509    void doDebugFlashRegions();
510    void doDisplayComposition(const sp<const DisplayDevice>& displayDevice, const Region& dirtyRegion);
511
512    // compose surfaces for display hw. this fails if using GL and the surface
513    // has been destroyed and is no longer valid.
514    bool doComposeSurfaces(const sp<const DisplayDevice>& displayDevice, const Region& dirty);
515
516    void postFramebuffer();
517    void drawWormhole(const sp<const DisplayDevice>& displayDevice, const Region& region) const;
518
519    /* ------------------------------------------------------------------------
520     * Display management
521     */
522
523    /* ------------------------------------------------------------------------
524     * VSync
525     */
526    void enableHardwareVsync();
527    void resyncToHardwareVsync(bool makeAvailable);
528    void disableHardwareVsync(bool makeUnavailable);
529
530public:
531    void resyncWithRateLimit();
532    void getCompositorTiming(CompositorTiming* compositorTiming);
533private:
534
535    /* ------------------------------------------------------------------------
536     * Debugging & dumpsys
537     */
538    void listLayersLocked(const Vector<String16>& args, size_t& index, String8& result) const;
539    void dumpStatsLocked(const Vector<String16>& args, size_t& index, String8& result) const;
540    void clearStatsLocked(const Vector<String16>& args, size_t& index, String8& result);
541    void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const;
542    bool startDdmConnection();
543    void appendSfConfigString(String8& result) const;
544    void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
545            const sp<const DisplayDevice>& hw,
546            int32_t minLayerZ, int32_t maxLayerZ);
547
548    void logFrameStats();
549
550    void dumpStaticScreenStats(String8& result) const;
551    // Not const because each Layer needs to query Fences and cache timestamps.
552    void dumpFrameEventsLocked(String8& result);
553
554    void recordBufferingStats(const char* layerName,
555            std::vector<OccupancyTracker::Segment>&& history);
556    void dumpBufferingStats(String8& result) const;
557    void dumpWideColorInfo(String8& result) const;
558
559    bool isLayerTripleBufferingDisabled() const {
560        return this->mLayerTripleBufferingDisabled;
561    }
562
563#ifdef USE_HWC2
564    /* ------------------------------------------------------------------------
565     * VrFlinger
566     */
567    void clearHwcLayers(const LayerVector& layers);
568    void resetHwcLocked();
569
570    // Check to see if we should handoff to vr flinger.
571    void updateVrFlinger();
572#endif
573
574    /* ------------------------------------------------------------------------
575     * Attributes
576     */
577
578    // access must be protected by mStateLock
579    mutable Mutex mStateLock;
580    State mCurrentState;
581    volatile int32_t mTransactionFlags;
582    Condition mTransactionCV;
583    bool mTransactionPending;
584    bool mAnimTransactionPending;
585    SortedVector< sp<Layer> > mLayersPendingRemoval;
586    SortedVector< wp<IBinder> > mGraphicBufferProducerList;
587
588    // protected by mStateLock (but we could use another lock)
589    bool mLayersRemoved;
590    bool mLayersAdded;
591
592    // access must be protected by mInvalidateLock
593    volatile int32_t mRepaintEverything;
594
595    // current, real and vr hardware composers.
596    HWComposer* mHwc;
597#ifdef USE_HWC2
598    HWComposer* mRealHwc;
599    HWComposer* mVrHwc;
600#endif
601    // constant members (no synchronization needed for access)
602    RenderEngine* mRenderEngine;
603    nsecs_t mBootTime;
604    bool mGpuToCpuSupported;
605    sp<EventThread> mEventThread;
606    sp<EventThread> mSFEventThread;
607    sp<EventThread> mInjectorEventThread;
608    sp<InjectVSyncSource> mVSyncInjector;
609    sp<EventControlThread> mEventControlThread;
610    EGLContext mEGLContext;
611    EGLDisplay mEGLDisplay;
612    sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES];
613
614#ifdef USE_HWC2
615    std::unique_ptr<dvr::VrFlinger> mVrFlinger;
616#endif
617
618    // Can only accessed from the main thread, these members
619    // don't need synchronization
620    State mDrawingState;
621    bool mVisibleRegionsDirty;
622#ifndef USE_HWC2
623    bool mHwWorkListDirty;
624#else
625    bool mGeometryInvalid;
626#endif
627    bool mAnimCompositionPending;
628#ifdef USE_HWC2
629    std::vector<sp<Layer>> mLayersWithQueuedFrames;
630    sp<Fence> mPreviousPresentFence = Fence::NO_FENCE;
631    bool mHadClientComposition = false;
632#endif
633    FenceTimeline mGlCompositionDoneTimeline;
634    FenceTimeline mDisplayTimeline;
635
636    // this may only be written from the main thread with mStateLock held
637    // it may be read from other threads with mStateLock held
638    DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays;
639
640    // don't use a lock for these, we don't care
641    int mDebugRegion;
642    int mDebugDDMS;
643    int mDebugDisableHWC;
644    int mDebugDisableTransformHint;
645    volatile nsecs_t mDebugInSwapBuffers;
646    nsecs_t mLastSwapBufferTime;
647    volatile nsecs_t mDebugInTransaction;
648    nsecs_t mLastTransactionTime;
649    bool mBootFinished;
650    bool mForceFullDamage;
651#ifdef USE_HWC2
652    bool mPropagateBackpressure = true;
653#endif
654    SurfaceInterceptor mInterceptor;
655    bool mUseHwcVirtualDisplays = false;
656
657    // Restrict layers to use two buffers in their bufferqueues.
658    bool mLayerTripleBufferingDisabled = false;
659
660    // these are thread safe
661    mutable MessageQueue mEventQueue;
662    FrameTracker mAnimFrameTracker;
663    DispSync mPrimaryDispSync;
664
665    // protected by mDestroyedLayerLock;
666    mutable Mutex mDestroyedLayerLock;
667    Vector<Layer const *> mDestroyedLayers;
668
669    // protected by mHWVsyncLock
670    Mutex mHWVsyncLock;
671    bool mPrimaryHWVsyncEnabled;
672    bool mHWVsyncAvailable;
673
674    // protected by mCompositorTimingLock;
675    mutable std::mutex mCompositorTimingLock;
676    CompositorTiming mCompositorTiming;
677
678    // Only accessed from the main thread.
679    struct CompositePresentTime {
680        nsecs_t composite { -1 };
681        std::shared_ptr<FenceTime> display { FenceTime::NO_FENCE };
682    };
683    std::queue<CompositePresentTime> mCompositePresentTimes;
684
685    /* ------------------------------------------------------------------------
686     * Feature prototyping
687     */
688
689    bool mInjectVSyncs;
690
691    Daltonizer mDaltonizer;
692#ifndef USE_HWC2
693    bool mDaltonize;
694#endif
695
696    mat4 mPreviousColorMatrix;
697    mat4 mColorMatrix;
698    bool mHasColorMatrix;
699
700    // Static screen stats
701    bool mHasPoweredOff;
702    static const size_t NUM_BUCKETS = 8; // < 1-7, 7+
703    nsecs_t mFrameBuckets[NUM_BUCKETS];
704    nsecs_t mTotalTime;
705    std::atomic<nsecs_t> mLastSwapTime;
706
707    size_t mNumLayers;
708
709    // Double- vs. triple-buffering stats
710    struct BufferingStats {
711        BufferingStats()
712          : numSegments(0),
713            totalTime(0),
714            twoBufferTime(0),
715            doubleBufferedTime(0),
716            tripleBufferedTime(0) {}
717
718        size_t numSegments;
719        nsecs_t totalTime;
720
721        // "Two buffer" means that a third buffer was never used, whereas
722        // "double-buffered" means that on average the segment only used two
723        // buffers (though it may have used a third for some part of the
724        // segment)
725        nsecs_t twoBufferTime;
726        nsecs_t doubleBufferedTime;
727        nsecs_t tripleBufferedTime;
728    };
729    mutable Mutex mBufferingStatsMutex;
730    std::unordered_map<std::string, BufferingStats> mBufferingStats;
731
732    // Verify that transaction is being called by an approved process:
733    // either AID_GRAPHICS or AID_SYSTEM.
734    status_t CheckTransactCodeCredentials(uint32_t code);
735
736#ifdef USE_HWC2
737    std::atomic<bool> mVrFlingerRequestsDisplay;
738    static bool useVrFlinger;
739#endif
740    };
741}; // namespace android
742
743#endif // ANDROID_SURFACE_FLINGER_H
744