SurfaceFlinger.h revision 3a8f794471815e6419caefe254adf2bbb19a8a53 
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    static char const* getServiceName() ANDROID_API {
108        return "SurfaceFlinger";
109    }
110
111    SurfaceFlinger() ANDROID_API;
112
113    // must be called before clients can connect
114    void init() ANDROID_API;
115
116    // starts SurfaceFlinger main loop in the current thread
117    void run() ANDROID_API;
118
119    enum {
120        EVENT_VSYNC = HWC_EVENT_VSYNC
121    };
122
123    // post an asynchronous message to the main thread
124    status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
125
126    // post a synchronous message to the main thread
127    status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
128
129    // force full composition on all displays
130    void repaintEverything();
131
132    // returns the default Display
133    sp<const DisplayDevice> getDefaultDisplayDevice() const {
134        return getDisplayDevice(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]);
135    }
136
137    // utility function to delete a texture on the main thread
138    void deleteTextureAsync(uint32_t texture);
139
140    // enable/disable h/w composer event
141    // TODO: this should be made accessible only to EventThread
142#ifdef USE_HWC2
143    void setVsyncEnabled(int disp, int enabled);
144#else
145    void eventControl(int disp, int event, int enabled);
146#endif
147
148    // called on the main thread by MessageQueue when an internal message
149    // is received
150    // TODO: this should be made accessible only to MessageQueue
151    void onMessageReceived(int32_t what);
152
153    // for debugging only
154    // TODO: this should be made accessible only to HWComposer
155    const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id);
156
157    RenderEngine& getRenderEngine() const {
158        return *mRenderEngine;
159    }
160
161    bool authenticateSurfaceTextureLocked(
162        const sp<IGraphicBufferProducer>& bufferProducer) const;
163
164private:
165    friend class Client;
166    friend class DisplayEventConnection;
167    friend class EventThread;
168    friend class Layer;
169    friend class MonitoredProducer;
170    friend class VrStateCallbacks;
171
172    // This value is specified in number of frames.  Log frame stats at most
173    // every half hour.
174    enum { LOG_FRAME_STATS_PERIOD =  30*60*60 };
175
176    static const size_t MAX_LAYERS = 4096;
177
178    // We're reference counted, never destroy SurfaceFlinger directly
179    virtual ~SurfaceFlinger();
180
181    /* ------------------------------------------------------------------------
182     * Internal data structures
183     */
184
185    class State {
186    public:
187        LayerVector layersSortedByZ;
188        DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays;
189
190        void traverseInZOrder(const std::function<void(Layer*)>& consume) const;
191        void traverseInReverseZOrder(const std::function<void(Layer*)>& consume) const;
192    };
193
194    /* ------------------------------------------------------------------------
195     * IBinder interface
196     */
197    virtual status_t onTransact(uint32_t code, const Parcel& data,
198        Parcel* reply, uint32_t flags);
199    virtual status_t dump(int fd, const Vector<String16>& args);
200
201    /* ------------------------------------------------------------------------
202     * ISurfaceComposer interface
203     */
204    virtual sp<ISurfaceComposerClient> createConnection();
205    virtual sp<ISurfaceComposerClient> createScopedConnection(const sp<IGraphicBufferProducer>& gbp);
206    virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc();
207    virtual sp<IBinder> createDisplay(const String8& displayName, bool secure);
208    virtual void destroyDisplay(const sp<IBinder>& display);
209    virtual sp<IBinder> getBuiltInDisplay(int32_t id);
210    virtual void setTransactionState(const Vector<ComposerState>& state,
211            const Vector<DisplayState>& displays, uint32_t flags);
212    virtual void bootFinished();
213    virtual bool authenticateSurfaceTexture(
214        const sp<IGraphicBufferProducer>& bufferProducer) const;
215    virtual status_t getSupportedFrameTimestamps(
216            std::vector<FrameEvent>* outSupported) const;
217    virtual sp<IDisplayEventConnection> createDisplayEventConnection();
218    virtual status_t captureScreen(const sp<IBinder>& display,
219            const sp<IGraphicBufferProducer>& producer,
220            Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
221            int32_t minLayerZ, int32_t maxLayerZ,
222            bool useIdentityTransform, ISurfaceComposer::Rotation rotation);
223    virtual status_t getDisplayStats(const sp<IBinder>& display,
224            DisplayStatInfo* stats);
225    virtual status_t getDisplayConfigs(const sp<IBinder>& display,
226            Vector<DisplayInfo>* configs);
227    virtual int getActiveConfig(const sp<IBinder>& display);
228    virtual status_t getDisplayColorModes(const sp<IBinder>& display,
229            Vector<android_color_mode_t>* configs);
230    virtual android_color_mode_t getActiveColorMode(const sp<IBinder>& display);
231    virtual status_t setActiveColorMode(const sp<IBinder>& display, android_color_mode_t colorMode);
232    virtual void setPowerMode(const sp<IBinder>& display, int mode);
233    virtual status_t setActiveConfig(const sp<IBinder>& display, int id);
234    virtual status_t clearAnimationFrameStats();
235    virtual status_t getAnimationFrameStats(FrameStats* outStats) const;
236    virtual status_t getHdrCapabilities(const sp<IBinder>& display,
237            HdrCapabilities* outCapabilities) const;
238    virtual status_t enableVSyncInjections(bool enable);
239    virtual status_t injectVSync(nsecs_t when);
240
241
242    /* ------------------------------------------------------------------------
243     * DeathRecipient interface
244     */
245    virtual void binderDied(const wp<IBinder>& who);
246
247    /* ------------------------------------------------------------------------
248     * RefBase interface
249     */
250    virtual void onFirstRef();
251
252    /* ------------------------------------------------------------------------
253     * HWComposer::EventHandler interface
254     */
255    virtual void onVSyncReceived(HWComposer* composer, int type, nsecs_t timestamp);
256    virtual void onHotplugReceived(int disp, bool connected);
257    virtual void onInvalidateReceived(HWComposer* composer);
258
259    /* ------------------------------------------------------------------------
260     * Message handling
261     */
262    void waitForEvent();
263    void signalTransaction();
264    void signalLayerUpdate();
265    void signalRefresh();
266
267    // called on the main thread in response to initializeDisplays()
268    void onInitializeDisplays();
269    // called on the main thread in response to setActiveConfig()
270    void setActiveConfigInternal(const sp<DisplayDevice>& hw, int mode);
271    // called on the main thread in response to setPowerMode()
272    void setPowerModeInternal(const sp<DisplayDevice>& hw, int mode);
273
274    // Called on the main thread in response to setActiveColorMode()
275    void setActiveColorModeInternal(const sp<DisplayDevice>& hw, android_color_mode_t colorMode);
276
277    // Returns whether the transaction actually modified any state
278    bool handleMessageTransaction();
279
280    // Returns whether a new buffer has been latched (see handlePageFlip())
281    bool handleMessageInvalidate();
282
283    void handleMessageRefresh();
284
285    void handleTransaction(uint32_t transactionFlags);
286    void handleTransactionLocked(uint32_t transactionFlags);
287
288    void updateCursorAsync();
289
290    /* handlePageFlip - latch a new buffer if available and compute the dirty
291     * region. Returns whether a new buffer has been latched, i.e., whether it
292     * is necessary to perform a refresh during this vsync.
293     */
294    bool handlePageFlip();
295
296    /* ------------------------------------------------------------------------
297     * Transactions
298     */
299    uint32_t getTransactionFlags(uint32_t flags);
300    uint32_t peekTransactionFlags();
301    uint32_t setTransactionFlags(uint32_t flags);
302    void commitTransaction();
303    uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s);
304    uint32_t setDisplayStateLocked(const DisplayState& s);
305
306    /* ------------------------------------------------------------------------
307     * Layer management
308     */
309    status_t createLayer(const String8& name, const sp<Client>& client,
310            uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
311            uint32_t windowType, uint32_t ownerUid, sp<IBinder>* handle,
312            sp<IGraphicBufferProducer>* gbp, sp<Layer>* parent);
313
314    status_t createNormalLayer(const sp<Client>& client, const String8& name,
315            uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
316            sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp,
317            sp<Layer>* outLayer);
318
319    status_t createDimLayer(const sp<Client>& client, const String8& name,
320            uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
321            sp<IGraphicBufferProducer>* outGbp, sp<Layer>* outLayer);
322
323    // called in response to the window-manager calling
324    // ISurfaceComposerClient::destroySurface()
325    status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle);
326
327    // called when all clients have released all their references to
328    // this layer meaning it is entirely safe to destroy all
329    // resources associated to this layer.
330    status_t onLayerDestroyed(const wp<Layer>& layer);
331
332    // remove a layer from SurfaceFlinger immediately
333    status_t removeLayer(const sp<Layer>& layer);
334
335    // add a layer to SurfaceFlinger
336    status_t addClientLayer(const sp<Client>& client,
337            const sp<IBinder>& handle,
338            const sp<IGraphicBufferProducer>& gbc,
339            const sp<Layer>& lbc,
340            const sp<Layer>& parent);
341
342    /* ------------------------------------------------------------------------
343     * Boot animation, on/off animations and screen capture
344     */
345
346    void startBootAnim();
347
348    void renderScreenImplLocked(
349            const sp<const DisplayDevice>& hw,
350            Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
351            int32_t minLayerZ, int32_t maxLayerZ,
352            bool yswap, bool useIdentityTransform, Transform::orientation_flags rotation);
353
354    status_t captureScreenImplLocked(
355            const sp<const DisplayDevice>& hw,
356            const sp<IGraphicBufferProducer>& producer,
357            Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
358            int32_t minLayerZ, int32_t maxLayerZ,
359            bool useIdentityTransform, Transform::orientation_flags rotation,
360            bool isLocalScreenshot);
361
362    sp<StartBootAnimThread> mStartBootAnimThread = nullptr;
363
364    /* ------------------------------------------------------------------------
365     * EGL
366     */
367    size_t getMaxTextureSize() const;
368    size_t getMaxViewportDims() const;
369
370    /* ------------------------------------------------------------------------
371     * Display and layer stack management
372     */
373    // called when starting, or restarting after system_server death
374    void initializeDisplays();
375
376    // Create an IBinder for a builtin display and add it to current state
377    void createBuiltinDisplayLocked(DisplayDevice::DisplayType type);
378
379    // NOTE: can only be called from the main thread or with mStateLock held
380    sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const {
381        return mDisplays.valueFor(dpy);
382    }
383
384    // NOTE: can only be called from the main thread or with mStateLock held
385    sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) {
386        return mDisplays.valueFor(dpy);
387    }
388
389    int32_t getDisplayType(const sp<IBinder>& display) {
390        if (!display.get()) return NAME_NOT_FOUND;
391        for (int i = 0; i < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES; ++i) {
392            if (display == mBuiltinDisplays[i]) {
393                return i;
394            }
395        }
396        return NAME_NOT_FOUND;
397    }
398
399    // mark a region of a layer stack dirty. this updates the dirty
400    // region of all screens presenting this layer stack.
401    void invalidateLayerStack(uint32_t layerStack, const Region& dirty);
402
403#ifndef USE_HWC2
404    int32_t allocateHwcDisplayId(DisplayDevice::DisplayType type);
405#endif
406
407    /* ------------------------------------------------------------------------
408     * H/W composer
409     */
410
411    HWComposer& getHwComposer() const { return *mHwc; }
412
413    /* ------------------------------------------------------------------------
414     * Compositing
415     */
416    void invalidateHwcGeometry();
417    void computeVisibleRegions(uint32_t layerStack,
418            Region& dirtyRegion, Region& opaqueRegion);
419
420    void preComposition(nsecs_t refreshStartTime);
421    void postComposition(nsecs_t refreshStartTime);
422    void updateCompositorTiming(
423            nsecs_t vsyncPhase, nsecs_t vsyncInterval, nsecs_t compositeTime,
424            std::shared_ptr<FenceTime>& presentFenceTime);
425    void rebuildLayerStacks();
426    void setUpHWComposer();
427    void doComposition();
428    void doDebugFlashRegions();
429    void doDisplayComposition(const sp<const DisplayDevice>& displayDevice, const Region& dirtyRegion);
430
431    // compose surfaces for display hw. this fails if using GL and the surface
432    // has been destroyed and is no longer valid.
433    bool doComposeSurfaces(const sp<const DisplayDevice>& displayDevice, const Region& dirty);
434
435    void postFramebuffer();
436    void drawWormhole(const sp<const DisplayDevice>& displayDevice, const Region& region) const;
437
438    /* ------------------------------------------------------------------------
439     * Display management
440     */
441
442    /* ------------------------------------------------------------------------
443     * VSync
444     */
445    void enableHardwareVsync();
446    void resyncToHardwareVsync(bool makeAvailable);
447    void disableHardwareVsync(bool makeUnavailable);
448
449public:
450    void resyncWithRateLimit();
451    void getCompositorTiming(CompositorTiming* compositorTiming);
452private:
453
454    /* ------------------------------------------------------------------------
455     * Debugging & dumpsys
456     */
457    void listLayersLocked(const Vector<String16>& args, size_t& index, String8& result) const;
458    void dumpStatsLocked(const Vector<String16>& args, size_t& index, String8& result) const;
459    void clearStatsLocked(const Vector<String16>& args, size_t& index, String8& result);
460    void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const;
461    bool startDdmConnection();
462    void appendSfConfigString(String8& result) const;
463    void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
464            const sp<const DisplayDevice>& hw,
465            int32_t minLayerZ, int32_t maxLayerZ);
466
467    void logFrameStats();
468
469    void dumpStaticScreenStats(String8& result) const;
470    // Not const because each Layer needs to query Fences and cache timestamps.
471    void dumpFrameEventsLocked(String8& result);
472
473    void recordBufferingStats(const char* layerName,
474            std::vector<OccupancyTracker::Segment>&& history);
475    void dumpBufferingStats(String8& result) const;
476
477    bool isLayerTripleBufferingDisabled() const {
478        return this->mLayerTripleBufferingDisabled;
479    }
480
481#ifdef USE_HWC2
482    /* ------------------------------------------------------------------------
483     * VrFlinger
484     */
485    void clearHwcLayers(const LayerVector& layers);
486    void resetHwc();
487
488    // Check to see if we should change to or from vr mode, and if so, perform
489    // the handoff.
490    void updateVrMode();
491#endif
492
493    /* ------------------------------------------------------------------------
494     * Attributes
495     */
496
497    // access must be protected by mStateLock
498    mutable Mutex mStateLock;
499    State mCurrentState;
500    volatile int32_t mTransactionFlags;
501    Condition mTransactionCV;
502    bool mTransactionPending;
503    bool mAnimTransactionPending;
504    SortedVector< sp<Layer> > mLayersPendingRemoval;
505    SortedVector< wp<IBinder> > mGraphicBufferProducerList;
506
507    // protected by mStateLock (but we could use another lock)
508    bool mLayersRemoved;
509    bool mLayersAdded;
510
511    // access must be protected by mInvalidateLock
512    volatile int32_t mRepaintEverything;
513
514    // current, real and vr hardware composers.
515    HWComposer* mHwc;
516#ifdef USE_HWC2
517    HWComposer* mRealHwc;
518    HWComposer* mVrHwc;
519#endif
520    // constant members (no synchronization needed for access)
521    RenderEngine* mRenderEngine;
522    nsecs_t mBootTime;
523    bool mGpuToCpuSupported;
524    sp<EventThread> mEventThread;
525    sp<EventThread> mSFEventThread;
526    sp<EventThread> mInjectorEventThread;
527    sp<InjectVSyncSource> mVSyncInjector;
528    sp<EventControlThread> mEventControlThread;
529    EGLContext mEGLContext;
530    EGLDisplay mEGLDisplay;
531    sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES];
532
533#ifdef USE_HWC2
534    std::unique_ptr<dvr::VrFlinger> mVrFlinger;
535#endif
536
537    // Can only accessed from the main thread, these members
538    // don't need synchronization
539    State mDrawingState;
540    bool mVisibleRegionsDirty;
541#ifndef USE_HWC2
542    bool mHwWorkListDirty;
543#else
544    bool mGeometryInvalid;
545#endif
546    bool mAnimCompositionPending;
547#ifdef USE_HWC2
548    std::vector<sp<Layer>> mLayersWithQueuedFrames;
549    sp<Fence> mPreviousPresentFence = Fence::NO_FENCE;
550    bool mHadClientComposition = false;
551#endif
552    FenceTimeline mGlCompositionDoneTimeline;
553    FenceTimeline mDisplayTimeline;
554
555    // this may only be written from the main thread with mStateLock held
556    // it may be read from other threads with mStateLock held
557    DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays;
558
559    // don't use a lock for these, we don't care
560    int mVrModeSupported;
561    int mDebugRegion;
562    int mDebugDDMS;
563    int mDebugDisableHWC;
564    int mDebugDisableTransformHint;
565    volatile nsecs_t mDebugInSwapBuffers;
566    nsecs_t mLastSwapBufferTime;
567    volatile nsecs_t mDebugInTransaction;
568    nsecs_t mLastTransactionTime;
569    bool mBootFinished;
570    bool mForceFullDamage;
571#ifdef USE_HWC2
572    bool mPropagateBackpressure = true;
573#endif
574    SurfaceInterceptor mInterceptor;
575    bool mUseHwcVirtualDisplays = false;
576
577    // Restrict layers to use two buffers in their bufferqueues.
578    bool mLayerTripleBufferingDisabled = false;
579
580    // these are thread safe
581    mutable MessageQueue mEventQueue;
582    FrameTracker mAnimFrameTracker;
583    DispSync mPrimaryDispSync;
584
585    // protected by mDestroyedLayerLock;
586    mutable Mutex mDestroyedLayerLock;
587    Vector<Layer const *> mDestroyedLayers;
588
589    // protected by mHWVsyncLock
590    Mutex mHWVsyncLock;
591    bool mPrimaryHWVsyncEnabled;
592    bool mHWVsyncAvailable;
593
594    // protected by mCompositorTimingLock;
595    mutable std::mutex mCompositeTimingLock;
596    CompositorTiming mCompositorTiming;
597
598    // Only accessed from the main thread.
599    struct CompositePresentTime {
600        nsecs_t composite { -1 };
601        std::shared_ptr<FenceTime> display { FenceTime::NO_FENCE };
602    };
603    std::queue<CompositePresentTime> mCompositePresentTimes;
604
605    /* ------------------------------------------------------------------------
606     * Feature prototyping
607     */
608
609    bool mInjectVSyncs;
610
611    Daltonizer mDaltonizer;
612#ifndef USE_HWC2
613    bool mDaltonize;
614#endif
615
616    mat4 mPreviousColorMatrix;
617    mat4 mColorMatrix;
618    bool mHasColorMatrix;
619
620    // Static screen stats
621    bool mHasPoweredOff;
622    static const size_t NUM_BUCKETS = 8; // < 1-7, 7+
623    nsecs_t mFrameBuckets[NUM_BUCKETS];
624    nsecs_t mTotalTime;
625    std::atomic<nsecs_t> mLastSwapTime;
626
627    size_t mNumLayers;
628
629    // Double- vs. triple-buffering stats
630    struct BufferingStats {
631        BufferingStats()
632          : numSegments(0),
633            totalTime(0),
634            twoBufferTime(0),
635            doubleBufferedTime(0),
636            tripleBufferedTime(0) {}
637
638        size_t numSegments;
639        nsecs_t totalTime;
640
641        // "Two buffer" means that a third buffer was never used, whereas
642        // "double-buffered" means that on average the segment only used two
643        // buffers (though it may have used a third for some part of the
644        // segment)
645        nsecs_t twoBufferTime;
646        nsecs_t doubleBufferedTime;
647        nsecs_t tripleBufferedTime;
648    };
649    mutable Mutex mBufferingStatsMutex;
650    std::unordered_map<std::string, BufferingStats> mBufferingStats;
651
652    // Verify that transaction is being called by an approved process:
653    // either AID_GRAPHICS or AID_SYSTEM.
654    status_t CheckTransactCodeCredentials(uint32_t code);
655
656#ifdef USE_HWC2
657    sp<VrStateCallbacks> mVrStateCallbacks;
658
659    std::atomic<bool> mEnterVrMode;
660#endif
661    };
662
663}; // namespace android
664
665#endif // ANDROID_SURFACE_FLINGER_H
666